A detachable powder metallurgy liner preform

Abstract

The utility model discloses a detachable powder metallurgy lining plate prefabricated part, include: lining plate, the metal plate layer is equipped in the lining plate, and the screw rod is buried in one side surface, and the cap head of screw rod one end is embedded in the metal plate layer, and the shock pad is located in the one side of lining plate, and the screw rod passes through the shock pad and is connected fixed with the nut of body and outside. The utility model sets up the lining plate into double -deck composite lining plate, and the base layer material has good tenacity, and the surface layer material has high wear resistance, and the double -deck composite lining plate is formed through centrifugal casting or lost foam composite casting mode, and the screw rod is inlayed and fixed, reduces the loss to screw rod, and the shock pad is set up and reduces the noise that the vibration between lining plate and body causes through the gravel knock.

Description

Technical Field

[0001] This utility model belongs to the field of liner technology, specifically, it relates to a detachable powder metallurgy liner prefabricated component. Background Technology

[0002] When an impact crusher is working, the crushed stone will hit the inner wall of the machine, causing wear. Usually, a replaceable liner is installed on the inner wall to protect it from wear. The screw passes through the liner and also through the machine body to connect with the external nut. However, the crushed stone will hit the head of the screw, causing wear and vibration, reducing its lifespan, and causing the liner to loosen or even fall off. In order to improve the wear resistance and shock absorption performance of the liner and reduce working noise, a detachable powder metallurgy liner prefabricated component is provided. Utility Model Content

[0003] In view of this, the technical problem to be solved by this utility model is to provide a detachable powder metallurgy liner prefabricated part, which solves the problem of poor wear resistance and shock absorption performance of the liner in the prior art.

[0004] To solve the above-mentioned technical problems, this utility model discloses a detachable powder metallurgy liner prefabricated component, including: a liner; a metal plate layer is provided inside the liner, a screw is embedded on one side of the liner, a cap at one end of the screw is embedded in the metal plate layer, a shock-absorbing pad is located on one side of the liner, and the screw passes through the shock-absorbing pad and is connected and fixed to the machine body and the external nut.

[0005] Furthermore, the cap of the aforementioned screw is composed of two parallel limiting plates spaced apart, and the cap is wrapped by a metal plate layer.

[0006] Furthermore, the base layer of the aforementioned liner is a metal plate layer, the metal plate layer is low-alloy steel, and the surface layer is high-chromium cast iron.

[0007] Furthermore, one side of the aforementioned liner is provided with an array of protrusions.

[0008] Compared with the prior art, this application can achieve the following technical effects: This utility model sets the liner as a double-layer composite liner. The base material has good toughness and the surface material has high wear resistance. The double-layer composite liner is formed by centrifugal casting or lost foam composite casting. The screw is embedded and fixed to reduce the wear on the screw. The noise generated by the vibration between the liner and the machine body caused by the impact of gravel is reduced by setting a shock-absorbing pad on the back of the liner.

[0009] Of course, any product implementing this application does not necessarily need to achieve all of the technical effects described above at the same time. Attached Figure Description

[0010] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the cross-section of a crusher according to one embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram of the liner being fixed to the machine body according to one embodiment of the present invention.

[0011] Attached Figure Labels

[0012] Liner 1, metal plate layer 2, screw 3, cap 4, shock absorber 5, machine body 6, nut 7, limit plate 8, protrusion 9, first impact frame 10, second impact frame 11, third impact frame 12, rotor assembly 13, hammer 14. Detailed Implementation

[0013] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0014] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the cross-section of a crusher according to one embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram of the liner being fixed to the machine body according to one embodiment of the present invention.

[0015] The impact crusher has a body 6, inside which are a first impact frame 10, a second impact frame 11, a third impact frame 12, a rotor assembly 13, a hammer 14, and a liner 1. The liner 1 is fixed to the inner wall of the crushing chamber of the body 6. The first impact frame 10, the second impact frame 11, and the third impact frame 12 are arranged sequentially from top to bottom in the crushing chamber of the body 6, surrounding the rotor assembly 13. The hammer 14 is installed on the rotor assembly 13. The stone material fed into the crushing chamber is hammered onto the impact frame by the rotating hammer 14, and crushed into stone particles.

[0016] A detachable powder metallurgy liner prefabricated component includes: a liner 1; a metal plate layer 2 is provided inside the liner 1, a screw 3 is embedded on one side of the liner 1, a cap 4 at one end of the screw 3 is embedded in the metal plate layer 2, a shock-absorbing pad 5 is located on one side of the liner 1, and the screw 3 passes through the shock-absorbing pad 5 and is connected and fixed to the machine body 6 and the external nut 7.

[0017] The cap 4 of the screw 3 is composed of two parallel limiting plates 8 spaced apart. The cap 4 is wrapped by the metal plate layer 2. When casting the base metal plate layer 2, one end of the screw 3 is inserted into the mold. After cooling and forming, the connection can be more stable.

[0018] The base layer of liner 1 is metal plate layer 2, which is made of low-alloy steel, and the surface layer is made of high-chromium cast iron. The composite liner is cast (bimetallic composite). Process selection: centrifugal casting (tubular liner) or lost foam composite casting (complex shapes).

[0019] Key technologies Interface bonding: By controlling the pouring temperature difference between the two metals, the metallurgical bonding of the interface is ensured (to prevent delamination and peeling).

[0020] Composition gradient design: the wear-resistant layer is high in chromium and carbon, while the base layer is low in alloy and high in toughness, achieving a gradient transition in performance.

[0021] One side of the liner plate 1 is provided with an array of protrusions 9. The principle of the protrusion 9 structure design is as follows: the regular protrusion structure is designed on the surface of the liner plate so that the crushed stone contacts the protrusions 9 first instead of impacting the liner plate plane over a large area. The protrusions 9 can disperse the impact energy (single-point force is converted into multi-point dispersed force) and guide the crushed stone to slide along the side of the protrusions 9, converting the vertical impact into oblique friction + rebound, reducing the vertical impact of the crushed stone on the liner plate 1, and also reducing the noise of the crusher.

[0022] The material of protrusion 9 is the same as the surface material of liner 1 to avoid premature wear. The spacing between protrusions 9 must be greater than the minimum feed particle size of the crusher to prevent material jamming.

[0023] This utility model sets the liner 1 as a double-layer composite liner. The base material has good toughness and the surface material has high wear resistance. The double-layer composite liner is formed by centrifugal casting or lost foam composite casting. The screw 3 is embedded and fixed to reduce the wear on the screw 3. The noise generated by the vibration between the liner 1 and the machine body 6 caused by the impact of gravel is reduced by setting the shock-absorbing pad 5 on the back of the liner 1.

[0024] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A detachable powder metallurgy liner prefabricated component, comprising: Liner; The feature is that the liner has a metal plate layer inside, a screw is embedded on one side, a cap at one end of the screw is embedded in the metal plate layer, a shock-absorbing pad is located on one side of the liner, and the screw passes through the shock-absorbing pad and is connected and fixed to the machine body and the external nut.

2. The detachable powder metallurgy liner prefabricated component as described in claim 1, characterized in that, The screw cap is composed of two parallel limiting plates spaced apart, and the cap is wrapped with a metal plate layer.

3. The detachable powder metallurgy liner prefabricated component as described in claim 2, characterized in that, The base layer of the liner is a metal plate layer, which is made of low-alloy steel, and the surface layer is made of high-chromium cast iron.

4. The detachable powder metallurgy liner prefabricated component as described in claim 3, characterized in that, One side of the liner has an array of protrusions.

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