显示标签为“rock crusher”的博文。显示所有博文
显示标签为“rock crusher”的博文。显示所有博文

2017年5月5日星期五

The role of flywheel in jaw crusher

Flywheel is a jaw crusher in a very conspicuous big guy, many people wonder how the flywheel in the end is doing? Jaw crusher with two flywheels, one of the flywheel for connecting the V-belt and eccentric shaft, the other from the shape seems to see what role it does not increase the weight of the equipment, can not be removed? joyal machinery in the following will be announced for everyone one by one.

Flywheel is a part of the mine equipment is inseparable from the parts, but also play a key role in the various crusher equipment, the flywheel is playing an irreplaceable role, so the flywheel can not be removed, while the equipment running The process of flywheel also plays a very important role.

From the appearance of jaw crusher equipment, we can easily see that the jaw crusher on both sides of the equipment has two large iron wheels, the two wheels is what we call the flywheel. Two flywheels at both ends of the eccentric shaft, one of the flywheel for connecting the V-belt and eccentric shaft, transmission kinetic energy; the other is a lot of people no use in the eyes of the flywheel, in fact, the flywheel in the jaw crusher running Crucial role. The main reason also from the jaw crusher working principle, jaw crusher is an indirect work of the equipment, which led to the resistance on the eccentric shaft will change, the motor load is uneven, the formation of mechanical rate fluctuations. And this flywheel is to make the motor load evenly, reduce the motor rated power and reduce the mechanical rate fluctuations and installation.





The flywheel stores the energy of the jaw crusher when it is empty and is released when the jaw is squeezed. That is, when the jaw plate moves away from the fixed jaw, the flywheel accumulates energy, and when the flywheel is closed, the flywheel transfers the accumulated energy for the material of the crusher, so that the load of the motor can be made uniform and the rated power of the motor can be reduced. It is because of the flywheel, jaw crusher energy consumption was able to be uniform.

Here, joyal machinery still have to say that not all of the jaw crusher is only a flywheel connected to the V-belt, there are two are connected to the Vane flywheel, if there are two large motor jaw crusher Are a dual purpose, the two flywheels are regarded as a pulley connected to the V-belt. This simplifies the equipment of the organization, but also make the best use.

2017年3月13日星期一

New features of hydraulic cone crusher

Artificial sand and gravel has gradually replaced the natural gravel, with the development of China's economy as well as the development of industry, construction industry and other industries a large number of artificial sand and gravel demand, artificial sand demand increased the production of artificial sand and gravel production machinery Equipment development, today Shanghai JOAYL mining machinery,which is a professional manufacturer of mining machinery, talk about the cone crusher in the artificial sand and gravel production in the processing role.


Cone crusher crushing ratio and the machine is simple and easy to operate, today JOYAL are talking about the advantages of the hydraulic cone crusher.Hydraulic cone crusher is added on the basis of the traditional conical increase The hydraulic protection and hydraulic clearance cavity function. Can be said to be a very efficient energy-saving machinery equipment.

In the gravel production line if the broken material mixed with difficult to break the metal, etc., hydraulic cone crusher unique hydraulic protection system will crush the top of the mouth, making difficult to break the material automatically fall out from it, and then fall on their own jobs. This method reduces the wear of the non-crushing material to the hydraulic cone crusher, extending the service life of the hydraulic cone crusher.

2017年2月24日星期五

What is the focus of maintenance of hydraulic cone crusher (a)

The hydraulic cone crusher  is a model in a cone crusher  that inherits all the advantages of a cone crusher, which is smoother than a large output and a simple operation of the machine structure.And that the hydraulic cone crusher improves the drawbacks of the cone crusher .The hydraulic system  is the biggest feature of the Hydraulic cone crusher , the hydraulic system can be the perfect equipment to clear the cavity of this work, reducing the machine failure.


Hydraulic cone crusher is widely used to break the ores. we all know that the ore is a very high hardness of the material. when whthe hydraulic cone crusher are crushing ore , the machine parts wear and tear is big, and hydraulic cone crusher The operating environment is very bad, so the daily maintenance of hydraulic cone crusher is very important.

What is the focus of routine maintenance of hydraulic cone crusher?

Shanghai joayl Machinery Co., Ltd,which is a professional manufacturer of crusher,remind the majority of users hydraulic cone crusher maintenance is very important. how to hydraulic cone crusher maintenance operations? joyal consider the hydraulic cone crusher maintenance focus is the hydraulic system, in the following joyal will talk about how to maintain the hydraulic system.

2017年1月17日星期二

Resulting in cone crusher card material of the three "culprits" of the three

Cone crusher is a more familiar with the ore crushing machinery equipment in China's construction industry and highway construction industry needs a lot of sand and gravel aggregate-based, cone crusher has become a broken stone for the ore bone Material production of the necessary machinery .




Cone Crusher As a kind of mining machinery used for crushing of ore in the production line of sand and gravel, the cone crusher has high output and low maintenance cost, but the crusher of frequent load operation may appear at the same time of crushing the ore some problems. Above in the Haizhuoya mining machinery and everyone said the cone crusher card machine problem, where Zhuo Ya continue to talk about the cone crusher card machine problem.

Cone crusher in the crushing of ore caused by the problem of the card machine there is a cone crusher dynamic cone and adjust the set of cards caused by the death of the cone crusher card machine problem. Cone crusher for a long time after the load operation, the hydraulic station will make the locking ring into effect with the formation of adjusting sleeve moving cone operation, once the treatment is not real-time will form a swap set card stuck, showing signs of downtime.

There is the screw of the cone crusher is not well maintained, resulting in poor smooth screw adjustment, adjust the cap seal and dust cover seal wear caused by the cone crusher machine problems, so users need to do maintenance of the cone crusher extremely important.


2017年1月6日星期五

Timely clean up importance of ore crusher

Ore crusher is a kind of mine mechanical equipment used in ore and other materials in gravel production line. The ore can be crushed under the action of ore crusher. The ore crusher is the necessary machinery to produce aggregate. Equipment, construction industry and highway construction and other industries can not be missing the key.


Ore crusher is used for the crushing of ore processing, ore is a relatively high hardness of a material, so in the ore crusher broken rock at the same time inevitable, because the role of force is caused by each other ore crusher by ore reaction Damage to the parts caused by the ore crusher.

In the ore crusher crushing ore at the same time, the ore crusher damage is not small, so the shanghai joyal mining machinery to remind the user to pay attention to the maintenance and maintenance of ore crusher, which have time to clean up the ore crusher operation.

In the ore crusher crushing process due to excessive particle size or feed too fast can easily lead to crusher equipment card machine, a direct impact on the normal operation of the machine. So it is necessary to clean up the ore crushing machine in time to block the ore and other materials to reduce the ore crusher due to blockage caused by damage to machine parts.

2017年1月4日星期三

Cause of Eccentric Shaft Instability in Cone Crusher

Cone Crusher is a kind of ore crushing machinery used in the crushing of ore production line in gravel production line. As a large-scale mine machinery equipment for ore crushing, the cone crusher is composed of many important parts. Including the eccentric shaft of the cone crusher.

   

Recently, customers and the Shanghai joyal mining machinery consulting cone crusher, here joyal talk about the cone crusher is very important for eccentric shaft, cone crusher eccentric shaft running instability of the reasons .

Cone Crusher eccentric shaft is eccentric shaft, gear, eccentric bushing and eccentric gears and other key components, cone crusher eccentric shaft running instability and these parts have a great relationship, Sub-simple and we talk about the eccentric shaft instability caused by cone crusher related factors.

Cone crusher bushing quality is not good, can not meet the requirements of the cone crusher bushing often change, due to the liner and the lower frame and the eccentric shaft of the strict installation requirements, if the cone crusher bushing improper installation will Resulting in instability of the eccentric shaft cone crusher phenomenon.

2016年11月24日星期四

Where can buy good quality impact crusher in China

Impact crusher can be said that the sand production line for ore crushing a dedicated mining machinery and equipment, and counterattack crusher as a sand and gravel production line in order to improve the quality of sand and gravel products, the secret weapon, Crusher processing and production of ore grain type is good, after the impact of the crusher counterattack plate repeatedly broken ore, granite set up a square is in line with the highway and other high quality gravel needs.
 

A good impact crusher on the entire gravel production line of the product quality has a very high increase, a good quality impact crusher to produce aggregate to better meet the road construction and other large-scale The need for high quality engineering. So where to buy a good quality of the impact crusher?

Impact crusher sales market relatively hot area mainly in Shanghai, Shandong and other places mainly in the central region and to Shanghai, Guangdong and other places as the representative of the eastern coastal areas, these areas should be the largest counterattack crusher manufacturers . These areas are economically developed areas, the technological content of products and products have a certain quality assurance.

Shanghai and other regions of the mining machinery manufacturers are very competitive, the distribution of mining machinery manufacturers are also many. Shanghai Joyal mining machinery remind the users to carefully weigh the reputation of these mining machinery and equipment manufacturers how the user can also conduct field trips, Consider buying high-quality impact crushers.

2016年11月18日星期五

Cause of Damage to Motor of Ore Crusher

Ore crusher is used for ore crushing of a dedicated mining machinery and equipment, ore crusher can be broken into small pieces of ore is very critical to the production of sand and gravel mechanical equipment, ore crusher for ore crusher Of each component is very critical for the ore crusher, the motor is its key parts.



Motor is the ore crusher to the normal operation of the key to the motor is a very important part of the ore crusher, the Haizhuo mining machinery to remind the user to pay attention to the maintenance of the motor, usually caused by the ore crusher motor damage reasons ?

On the one hand in the ore crusher operation, the internal parts of the ore crusher is also the continuous operation of the ore crusher in the broken rock ore crusher internal friction between the bearings and the rotor caused by the ore crusher core surface wear caused Machine short-circuit, when the machine short-circuit caused by the ore crusher motor damage.

On the other hand, the ore crusher is generally open-air operation in the open, the moisture in the air so that the core rust, so that some of the water into the ore crusher inside the motor, causing motor rust problems lead to motor damage.

2016年11月16日星期三

How to Solve the Problem of Throwing Oil in Jaw Crusher

Shanghai joyal mining machinery is a professional crusher manufacturers. Good performance, high output crusher machinery and equipment has always been the goal of joyal struggle to help you solve the problem of crushing machine is joyal's sub-matter. Jaw crusher is a widely welcomed by the crusher machinery and equipment, jaw crusher crushing ratio, the machine is stable and very suitable for crushing the ore.
 


Jaw crusher
is a very useful mechanical equipment, but joyal to remind the users need to pay attention to jaw crusher during the repairs of the oil thrown out of the problem. Joyal help you solve the problem of jaw crusher to ensure that we can complete the broken task in a timely manner.

Jaw crusher thrown oil on the one hand the situation is due to jaw crusher lubrication system oil supply pressure is too high or too much supply of lubricating oil caused. This situation requires the user to check whether the jaw crusher bushing loose, if there is a need for timely fastening.

On the other hand, the jaw crusher causes the main axle speed to lead the lubricating oil to splash, the user needs to guarantee between the jaw crusher frame bushing and the eccentric axle, between the dynamic cone main axle and the eccentric shaft installs the mainshaft bushing has the suitable Of the gap can guarantee jaw crusher lubricants will not splash.

2016年11月14日星期一

How to Solve the Friction Problem of Hydraulic Cone Crusher

Cone Crusher is a broken ore for the broken machinery and equipment, cone crusher to break the main role of the rock for China's economic construction, especially the development of the construction industry has made great contributions to the cone crusher there are many types There are efficient cone crusher, hydraulic cone crusher and cone crusher, etc., here shanghai joyal mining machinery talk about hydraulic cone crusher parts of the friction problem.





Hydraulic cone crusher as an important mining machinery and equipment, with a crushing ratio is relatively large, high output characteristics, simple and easy maintenance of hydraulic cone crusher to become widely loved by the machinery and equipment. We should pay attention to the hydraulic cone crusher due to the operation process, the contact between the internal parts lead to friction, hydraulic cone crusher parts damage.

The hydraulic cone crusher in the hydraulic cone crusher broken ore will occur when the mutual movement between the parts leading to the cone crusher friction between the friction between these parts of the kinetic energy into heat caused by hydraulic cone crusher Machine heating serious.

To solve the hydraulic cone crusher friction problem is the fundamental starting point is to ensure that the hydraulic cone crusher lubrication is good, to ensure that the hydraulic cone crusher lubrication system of the oil flow, oil clean and impermeable does not leak and normal operation.

2016年11月7日星期一

The crusher correctly starts the homework tutorial

Crusher is used for ore crushing a special machinery and equipment, crusher using hard parts to pieces of ore crushing this is the other mechanical equipment can not be completed, the emergence of the crusher to solve the modern housing needs of the sand Stone aggregate problem, crusher is an effective proof of scientific and technological development.



Shanghai Joyal mining machinery is a professional mining machinery Co., Ltd., crusher as a large mining machinery and equipment, crusher operation in the user needs the correct operation of crusher machinery and equipment, which is the prerequisite for safe operation,here we Talk about crusher safe operation of the premise of how to do crusher start before the preparatory work.

Before the start of the crusher users need to check the role of the machine to check the wear of broken plate plate, adjust the discharge port size; check the crusher crushing chamber for residual material, if necessary in time to exclude.

On the other hand, the user needs to determine whether the crusher pulley and the protective cover of the flywheel is complete; the crusher's fuel tank filled with oil level and lubrication system is intact; crusher signal system is intact.

2016年10月21日星期五

Simple Distinguish Method of Type of Jaw Crusher

Jaw crusher in the well-deserved first crusher mechanical equipment, jaw crusher is mainly used for gravel production line in the first-level crushing operations, large pieces of rock through the jaw crusher broken, the other broken Machine was held line two, three broken. Jaw crusher can be said that the crusher mechanical family of the pillars, in the gravel production line has an extremely important role.


Jaw crusher research and development put into use for a long time, after years of development and perfection, is a very useful crusher machinery and equipment. Jaw crusher machine structure is simple, easy to operate, jaw crusher crushing ratio is relatively high yield, and compared with the general crusher jaw crusher can be broken relatively large hardness of the ore.

 General jaw crusher is how to classify? Shanghai Joyal mining machinery simple and we talk about jaw crusher classification, the thickness of the jaw crusher is mainly based on the import of raw materials to determine the particle size, rough jaw crusher feed size can be large, fine Jaw crushers can handle smaller particle sizes.

Jaw crusher size of the model is in accordance with the jaw crusher for the width of the feed mouth, the inlet width of 300mm in the following small jaw crusher, feed width of 300-600 in the middle of the Is a medium-sized Hubei broken, feeding the width of more than 600 is a large jaw crusher.

2016年10月13日星期四

The Installation and Debugging Guidance of Crusher V - belt

In recent years my economic development is very rapid, of which the construction industry is particularly evident, we all know that the development of the construction industry and mining machinery industry is closely related. The development of the construction industry requires a large number of aggregate mainly from the crusher and other mining machinery processing role, crusher is mainly used for crushing ore and other materials for mining machinery and equipment. Crusher is a large-scale mining machinery and equipment, shanghai joyal mining machinery to remind customers to be prudent operation, and today we talk about Triangle Zaiya Triangle belt installation precautions.

V-belt before installation, users need to pay attention to the appropriate shorten the distance between the belt, so when the belt is more easily installed, especially to note that can not use iron and other hard objects for mandatory installation, to avoid damage Crusher of the V-belt. The user also need to pay attention to ensure that the crusher wheel face in the same plane.

V-belt crusher in the installation, the user also need to pay attention to check the crushing machine V-belt preload, how to check the crusher's V-belt preload? Haizhuo Ya mining machinery here summarized a few simple methods of operation.

Users can use crimping edge, and then check the winding method to check the crushing machine V-belt preload; we should pay attention to the crusher full load operation 2-3 hours later, and then crusher V belt tension degree debugging.

2016年9月28日星期三

Replacement Skill of Lashing Plate of Impact Crusher

Impact crusher is an early research and development of a crusher mechanical equipment, impact crusher stone with stone and stone crushing two different crushing chamber, stone stone is mainly used for impact crusher crushing hard ore materials operations, and Stone blacksmith can be used in the hard material crushing processing operations. So the impact crusher can be used for a variety of different ore crushing processing operations, where Haizhuo Ya mining machinery and we talk about the impact crusher in the use of how to replace the impact crusher wearing parts, that is, Impact crusher lining board.



Impact crusher can be used for a certain degree of hardness of the ore crushing processing operations, the same reaction force on the impact crusher also caused some wear, especially impact crusher liner. Impact crusher lining is mainly used for crushing of rock processing, so the liner is easy to wear impact crusher parts. We should note that when the impact crusher liner wear two-thirds of the thickness of the need to impact crusher liner replacement.

Replacement of impact crusher liner, the first need to remove the old impact crusher liner, if the old liner is not easy to remove, the user can use gas welding cutting, and clean the surface.

When you need to replace the impact crusher tapered bushing, the user need to pay attention to the cutting process, to avoid injury to other parts. First install the impact crusher nut, and then orderly casting zinc alloy, and then casting.

2016年5月3日星期二

Limestone crushing production line brief

image of limesone
As a common ore material, limestone use is very extensive. While the limestone processing applications, crushing production line is of course indispensable, limestone crushing production line is designed with several factors, such as being pulverized material hardness, silicon percentages, raw material moisture content, recyclable size, desired product size, the size of the number, and hours of capacity and other uses. Today, I will introduce a highly efficient combination of limestone crushing: primary jaw crusher + fine jaw crusher / compound cone crusher as primary and secondary crusher equipment, take impact crusher, crusher equipment as three It was shaped. This proposal has been adopted by many users and become a viable option.
The combination of advantages:
1, the high quality of the finished product. After the needle plate is not more than 5%, once by a jaw crusher and impact crusher, but the needle plate type of content is more than 10%, the use of VSI series vertical shaft impact crusher, needle plate type products content reduced to 4.7%.
2, high yield. Utilizing impact crusher as crushing processing, production increased by 50%.
3, to reduce costs. Due to the use of impact crusher as tertiary crushing, and less consumption of vertical shaft impact crusher wear parts in the whole production process, greatly reducing downtime and repair time.

2015年11月8日星期日

How to explain the Joyal cone crusher

Now you are clear what"s the meaning of cone crusher machine and why we call it cone crusher. In all kinds of crushers, the definition of cone crusher is so easy to be unknown or misunderstood by lots of people. So we are happy to give you this news. In addition, we are a good cone crusher supplier. We have all sorts of good cone crushers. If you want to learn more about our cone crusher, you are welcome any time.

In modern several years, so that you can adapt for the shifting as well as the potent calls for on the sector, various forms of cone crushers for sale are continuously researched and formulated.Upcoming the specialists of Machinery could make a comparison within the forms and their functionality of varied varieties of cone crusher, in this manner; we're going to have the ability to see which type of crusher has one of the most remarkable effectiveness then find out the development path in the mobile impact crushing plant.

Next, let"s have some fun. If you take a look at cone crusher the first time or take a sudden glance, you may feel that a cone crusher is even not like a cone. Do you know why? As the real cone crusher is a huge, rounded metal container with several industrial-strength springs circling its body.The crushing takes place between the central shaft and a calcite crusher plate, known as the mantle.

Under the condition that the domestic and foreign customers are generally attaching great importance to the green environmental protection, Shanghai Joyal has brought customer the green environmental protection cone crusher to reduce environmental costs, and benefit forever in the long-term operating costs.

Cone Crusher is Commonly Used at home and abroad

Shanghai Joyal Machinery Co., Ltd is a professional hydraulic cone crusher manufacturer in China with decades producing experience and advanced producing technology, Except the dedicated devices of hydraulic cone crusher, hydraulic cone crusher machine is equipped using the hydraulically actuated device, the hydraulic regulating device, the hydraulic insurance system and the hydraulic transmission, which makes the hydraulic cone crusher for sale has better performance and more easier to operate.

In order to satisfy the increasing growth of economic development, the application of large equipment appears is more widely, automation and environmental conditions meet crawler type mobile crusher in case, more efficient, more capable of crusher become the main customers choose tendency .The same size to achieve greater ability, the type of impact VSI sand machine plays the role leader for the future of all crusher machinery development in practical performance and no matter design ideas.

Due to the lower level of the overall advancement of China's crusher equipment, the production mode of domestic mining enterprises is still in scattered, small scale and chaotic state, which results in a huge waste of natural resources and energy,South Africa Gold Machinery, and causes the tremendous damage to the ecological environment.

The Application of Hydraulic Cone Crusher

As we all know, the key point of iron ore processing is high efficiency, energy saving and environmental protection, hydraulic cone crusher has supporting both at the upper and lower of the main spindle, which makes the hydraulic cone crusher is able to withstand the bigger crushing force of iron ore and greater stroke.

In addition, owing to the special crushing cavity shape matching the pyramid principle, the hydraulic cone crusher has a higher crushing efficiency for iron ore, And after an upgrade of the equipment,Stone Crushers Machine
, the crushing stroke, crushing speed, and the crushing chamber shape are combined together, which makes the hydraulic cone crusher has a higher output,Hydraulic cone crusher is broadly used in the works of mine, smelting, construction, transportation, irrigation, chemical and other industry, and got high praise from its users.

2015年11月7日星期六

The design theory of HPC cone crusher

The mantle performs eccentric movements under the concave (also called bowl liner), so squeezing & crushing the material between the cone crusher mantle and concave. In general, a cone crusher runs on V-belts driven by an electric motor or diesel engine. Extensive application of Cone crusher supply in aggregate and mineral processing industries.Usually, a cone crusher is installed in a crushing circuit as a secondary crusher. Pre-crushed material fed in via the top of the cone crusher flows over the mantle while the vertical cone crusher machine drive shaft rotates the mantle. 

Whether in industries such as mining, construction, railway, highway crusher machinery are essential can be crushing medium and above medium hardness ore, rock, and resistance in the working process of the crusher grinding accessories crushing effect plays an important role, Under normal circumstances, the affect of these crushing wall rolling acetabular wall crushing effect and the service life of these factors: stone composition, the hardness of the stone, stone humidity itself crushing wall and the quality of the rolling acetabular wall. 

HPC cone crusher is one of the main types of primary crushers in a mine or ore processing plant. Cone crushers are designated in size either by the gape and mantle diameter or by the size of the receiving opening. Gyratory cone crushers can be used for primary or secondary crushing.The mobile impact crushing plan tvertical spindle is free to rotate around its own axis. The crusher illustrated is a suspended spindle type, meaning that the main shaft is suspended at the top and that the eccentric is mounted above the gear.

The Application of Rock Cone Crusher

At present, China"s rock cone crusher enterprises in the development of science and technology under the environment change rapidly, has been a good development, the market competition is becoming increasingly fierce, in recent years the cone crusher industry market size rose steadily.Rock cone crusher machine is widely used in mining enterprises, the efficiency of the enterprise cost is very important. Can be widely used in metallurgical industry, construction industry, construction industry, chemical industry and silicate industry cone crusher is suitable for crushing hard, and hard ore and rock, such as iron ore, copper ore, limestone, quartz sandstone, granite, etc.. 

The China cone crusher is a machine used for breaking big rocks into minor rocks, gravels or rock dusts. The crusher is widely used for medium and fine crushing of all kinds of rocks with compressive strength under 350MPa in mining, cement industry, sand industry, metallurgy and other fields.The characteristics of China cone crusher are simple structure, steady performance, easy maintenance, high productivity, high efficiency, high quality, etc. 

Cone crusher for sale used in ore crushing equipment manufacturers Shanghai Joyal Machinery Co., Ltd production the building rubble mechanism sand flow, especially broken basalt, granite, pebbles and other hard materials, not only high efficiency, low production costs, and broken products, graintype of good, high-quality sand and gravel aggregate. The material is sandwiched between the two cones, by extrusion, bending and shearing action, crawler type mobile crusher, lower power consumption.

2015年11月5日星期四

The Exclusive Layout of Compound Pendulum Jaw Crusher

Prices of jaw crusher machine maintenance manual manufacturers jaw crusher maintenance manual and illustration,operation the way to focus on jaw crusher maintenance a jaw crusher is. Jaw crusher maintenance manual documentation jaw crusher maintenance manual and illustration,operation please refer to manual instruction iv if stone gathers around and stops up, just remove it. Jaw crusher maintenance manual jaw crusher maintenance manual & schedule safe work method statements maintenance jaw crusher spring cone crusher maintenance instruction manual.

Three dimensional model is foundation work of jaw crusher parts structure , which is directly related to the follow-up work , The correct model refers to the accurate analysis in the crusher calcite crusher parts and three-dimensional assembly ,Iron Ore Separation Process,Crusher frame layout is concerned with successful, acceptable installation of whole crusher spare parts,Small Stone Crusher Machine.

Jaw crusher is equipped with double impact crusher supplier row spherical roller bearing on both ends, with the inner race fitting the eccentric shaft, The key bearing part is designed in the lateral of eccentric shaft neck, and the outer frame is connected with the hole on the frame, fixed on the frame with bolt, The movable jaw plate is fixed on the head, Dismantling lining plate is convenient, and the plate may be fixed at any time, and the center in the movable jaw can be adjusted to approximate the rotary center, ensuring the smooth operation from the machine in the process.