Introduction of new jaw crusher liner plate

Jaw crusher parts mainly include side guard plate, tooth plate, elbow plate, jaw head, tooth plate, eccentric shaft, bearing, adjusting seat, bearing gland, flywheel.

Jaw crusher side guard plate

Side guard is also called guard plate, upper side guard plate, lower side guard plate, perimeter guard plate, fork plate, which is an important part of the jaw crusher.

Product Introduction

Jaw crusher side guards are also called fork plates and baffle plates. It is a kind of high strength wear resistant steel, which can effectively protect the machine body and extend the life of the frame. Jaw crusher side guard plate is located between the fixed tooth plate and the movable tooth plate, and is a high manganese steel casting, which is mainly used to protect the jaw crusher frame wall in the whole body.

A new type of crusher side guard includes an upper side guard and a lower side guard, both of which have a right-angle trapezoidal plate body, the short parallel side of the upper side guard and the long parallel side of the lower side guard are equal in length and the slope of the beveled sides of the upper side guard and the lower side guard are the same, the middle side of both the upper side guard and the lower side guard are provided with two outwardly protruding limit blocks molded integrally with the plate body, the upper side guard is provided with mounting holes, and one of the right angles of the upper side guard is designed as an arc. One of the right angle design for the arc transition, the upper side of the guard plate and the lower side of the guard plate body along the beveled edge and vertical edge with a recess near the edge. The utility model has a simple structure, easy installation and debugging, excellent tensile strength and toughness, and will not be deformed when subjected to large impact force, which effectively ensures the safety of the crusher, and the utility model has low production cost and is suitable for mass production.

Product advantages

The jaw crusher side shield adopts self-developed breeder, which changes the molecular structure of the side shield and makes it more wear-resistant. Strict control of pouring process, responsible for the product.

After casting, water toughness treatment is carried out. After water toughness treatment, the side shield has high tensile strength, toughness, plasticity and non-magnetic. It makes the side guards of jaw crusher more durable. When it is deformed by severe impact and strong pressure during use, the surface of the jaw crusher edge guard is process hardened, thus forming a high wear-resistant surface layer on the surface of the edge guard, while the inner layer of the edge guard maintains excellent toughness and can withstand large impact loads even when worn to a very thin level.

Jaw Crusher Side Guard The side guard is located between the fixed tooth plate and the movable tooth plate, and is a high manganese steel casting, which is mainly used to protect the jaw crusher frame wall in the whole body.

Jaw crusher is mainly used for medium crushing of mining ores and rocks, large materials, materials in the high compressive strength of 320 MPa crushing, in the work, the eccentric shaft through the motor to drive the rotation, multiple crushing of materials, so that the material from large to small, until the required materials from the discharge port, is a widely used crushing equipment, according to its characteristics are divided into two kinds of jaw crusher (jaw crusher) of compound swing, and simple swing.

Features of PE series stone crusher.

1、PE series stone crusher has low noise and less dust.

2、PE series stone crusher has large crushing ratio and uniform product size.

3、PE series stone crusher has simple structure, reliable work and low operating cost.

4、PE series stone crusher has safe and reliable lubrication system, easy parts replacement and simple equipment maintenance.

5、PE series stone crusher has deep crushing cavity and no dead zone, which improves the feeding capacity and output.

Jaw Crusher Crusher Liners Maintenance Method

In order to ensure the normal operation of the jaw crusher, in addition to proper operation, planned maintenance must be carried out, which includes daily maintenance inspection, minor repair, medium repair and major repair.

(1) Minor repair: The main contents include checking and repairing the adjusting device, high speed discharge gap, shifting or replacing the worn lining plate. Inspection and repair of the transmission part, lubrication system and replacement of lubricants, etc. The cycle of minor repair is about 1-3 months.

(2) Medium repair: In addition to all the work of the minor repair, it also includes the replacement of thrust plate, lining plate, inspection and repair of shaft tile, etc.. The cycle of medium repair is generally about 1-2 years.

(3) Overhaul: In addition to the entire work of the intermediate repair

(3) Overhaul: In addition to all the work of the intermediate repair, it also includes replacing or turning the eccentric shaft and the mandrel of the moving jaw, casting the pasteurized alloy on the connecting rod head, and replacing or repairing the wear parts. The overhaul cycle is usually about 5 years.

Jaw Crusher Tooth Plate

Jaw crusher tooth plate wear belongs to chiseling wear, tooth plate material is generally the standard high manganese steel with diameter water toughness treatment, under the scanning electron microscope to observe the tooth plate surface can be seen, the tooth plate surface extrusion into a concave and convex part of the material, and then pushed by the abrasive material to form a pressure tongue grinding surface, in the grinding surface can be seen a lot of abrasive tip short-range sliding caused by abrasion, and can be seen on the surface of the tooth plate micro crack.

The main reason for the wear of the tooth plate is the short-range sliding of the abrasive relative to the tooth plate, which causes repeated deformation of the tooth plate material due to grinding and repeated extrusion of the abrasive, resulting in fatigue degranulation of the metal material.

Wear loss process

(1) The material repeatedly squeezes the chiseled tooth plate, forming microcracks on the surface of the tooth plate area, or on the root of the protruding part of the extruded metal, than the microcracks keep expanding to be connected, causing the surface metal material to fall off and form abrasive chips.

(2) repeated extrusion of materials, resulting in the tooth plate metal material is partially cracked or turned up, and its broken or turned up part and with the extrusion of the impact of the material off the formation of abrasive chips.

(3) The material relative to the tooth plate short-range sliding, cutting the tooth plate to form abrasive chips.

Therefore, from the wear-resistant materials to control the wear of the tooth plate is mainly hardness and toughness, hard material, material extrusion deep, small material deformation, material on the material short-range sliding cutting volume is also small. Equipment should be selected from materials with good toughness and strong resistance to fracture, which can eliminate brittle fracture during the extrusion impact and improve the resistance to fatigue deformation cracking ability.

The movable jaw plate and fixed jaw plate of the jaw crusher are both high manganese steel castings. To prolong their service life, their shapes are designed to be symmetrical at the top and bottom, i.e. they can be turned around when one end is worn. The movable tooth plate and fixed tooth plate are the main recipients of stone crushing, and the movable tooth plate is installed on the movable jaw to protect the movable jaw.

The jaw crusher works in a cranking and squeezing type, and the working principle of jaw crusher is: the movable jaw is suspended on the mandrel and can swing left and right, and the connecting rod makes up and down reciprocating movement when the eccentric shaft rotates. This type of crusher adopts crank double linkage mechanism, although the jaw is subjected to a large crushing reaction force, the eccentric shaft and the connecting rod are not subjected to much force. In addition, when this type of jaw crusher is in operation, the trajectory of each point on the moving jaw is a circular arc centered on the mandrel, and its crushing ratio i is generally 3-6. The simple swing jaw crusher has a compact and simple structure, and the eccentric shaft and other transmission parts are subjected to less force; because the vertical displacement of the movable jaw is small, the material is less likely to be over-crushed during processing, so the jaw plate of this jaw crusher has less wear.

Product advantages:

1、Stable performance

2、Large crushing ratio

3、Uniform crushing size

Large adjustment range of discharge opening

5、Simple structure

6、Easy maintenance

7、Low operating cost

Jaw Crusher Elbow Plate

The jaw crusher elbow plate is divided into two types: assembled type and integral type according to the composition. The elbow plate used in the simple swing jaw crusher is of assembled structure. It is assembled by connecting one elbow plate body and two elbow plate heads. This makes it possible to replace only the elbow head that is prone to wear and tear to save consumable metal. Because of the heavy weight of the elbow plates used in large jaw crushers, Henan Yageo Steel’s jaw crusher elbow plates should be designed with lifting rings. The overall elbow plate used in compound jaw crusher is smaller in weight and size, therefore, it is not suitable to use smooth elbow plate (thrust plate) for crushing laminated materials and requiring high product size; for crushing hard materials with strong corrosion, smooth elbow plate (thrust plate) can also be used to prolong the life of elbow plate (thrust plate). In order to ensure the product size and shape, triangular or trapezoidal elbow plate (thrust plate) is usually still used.

According to the connection type of elbow head and elbow pad (or elbow plate liner), there are two types of rolling type and sliding type. The jaw crusher elbow plate is subjected to a large squeezing force between the elbow plate and the liner, and is subjected to periodic impact loads. In the repeated impact extrusion wear is faster, especially the sliding type structure is more serious. In order to improve the transmission efficiency, reduce the wear and prolong the service life, rolling type structure can be used. The head of the elbow plate is cylindrical and the liner is flat. Since the two ends of the elbow plate of the jaw crusher have the same cylindrical surface, when the liner surfaces at both ends of the elbow plate are parallel to each other, the force on the elbow plate of the jaw crusher will be transmitted along the same diameter of the cylindrical surface of the elbow plate and in the vertical direction of the liner surface. During the operation of the machine, the swing angle of the moving jaw is very small, so the angle between the elbow pads supported by the two ends of the jaw crusher elbow plate is very small (much smaller than the friction angle), so during the operation of the machine, the jaw crusher elbow plate and its elbow pads can keep pure rolling.