Novel high-wear-resistance anti-falling composite jaw plate

Abstract

The utility model discloses a novel high wear-resistant anti-falling composite jaw plate which comprises a jaw plate base body, teeth are arranged on the jaw plate base body, through wear-resistant block preset holes are formed in the teeth, and wear-resistant blocks are inserted in the wear-resistant block preset holes. According to the utility model, the high-chromium cast iron wear-resistant block cannot fall off, and the high-chromium cast iron wear-resistant block always plays a role in wear resistance in the working wear process of the jaw plate teeth, so that the service life of the large composite jaw plate is greatly prolonged. According to the novel large composite jaw plate, the high-chromium cast iron wear-resistant block can be prevented from falling off, the service life of the jaw plate can be greatly prolonged, and the cost performance of the novel large composite jaw plate is improved.

Description

Technical Field

[0001] The utility model belongs to a jaw crusher, in particular to a novel highly wear-resistant and anti-falling composite jaw plate. Background Art

[0002] At present, the jaw plates of jaw crushers are all made of high-manganese steel with excellent toughness. High-manganese steel has high impact toughness, which can prevent breakage when large materials are impacted. At the same time, high-manganese steel has work hardening ability. Under the action of large impact force, its surface will produce work hardening, increasing the wear resistance of the jaw plate. However, the high impact toughness of high-manganese steel increases the rheology of the jaw plate teeth, causing the working teeth of the jaw plate to wear faster.

[0003] Generally, the working teeth of the jaw plate are cast throughout. When the jaw plate is working, the material is crushed by the meshing and squeezing force between the moving jaw plate teeth and the static jaw plate teeth. Therefore, the jaw plate teeth will become flatter and flatter. When the wear reaches a certain thickness, the jaw plate needs to be replaced.

[0004] In order to increase the service life of the jaw plate, some adopt steel-bonded carbide rods or wear-resistant blocks with mechanical and physical properties similar to austenitic manganese steel on the austenitic manganese steel matrix, so that the carbide can be heat treated and water-toughened together with the austenitic manganese steel matrix. Because the quenching process parameters of austenitic manganese steel and steel-bonded carbide can be fully matched. Through this direct casting and inlaying method, the service life of the jaw plate produced is 50-70% longer than that of austenitic manganese steel with a single matrix. However, with the substantial price increases of non-ferrous metals such as titanium, molybdenum, tungsten, and nickel in recent years, the production cost is high, and the cost-effectiveness of the use of this jaw plate is declining.

[0005] In order to improve the cost performance of composite jaw plate of large jaw crusher, Figure 3 As shown, we use high-chromium cast iron wear-resistant blocks instead of steel-bonded carbide to produce large composite jaw plates. However, the physical and mechanical properties of high-chromium cast iron wear-resistant blocks are quite different from those of austenitic manganese steel, especially the heat treatment process parameters cannot match (high-chromium cast iron materials must be quenched by air cooling, and austenitic manganese steel must be quenched by water cooling). Therefore, high-chromium cast iron wear-resistant blocks can only be cold-embedded, that is, holes for high-chromium cast iron wear-resistant blocks are reserved on the austenitic manganese steel substrate, and the wear-resistant blocks are fixed in the reserved holes at the jaw plate teeth by gluing. However, for this type of bonded jaw plate, when the reserved holes are deep, the holes on the austenitic manganese steel substrate are not easy to clean, which increases the difficulty of gluing, resulting in a shallow depth of the embedded high-chromium cast iron wear-resistant blocks, which are easy to fall off. At the same time, the thinner high-chromium cast iron wear-resistant blocks have limited effect on extending the service life of the jaw plate, and fail to achieve the purpose of improving the cost-effectiveness of the use of this jaw plate. Summary of the invention

[0006] To this end, the utility model designs a new type of highly wear-resistant and anti-falling composite jaw plate, which can prevent the high chromium cast iron wear-resistant block from falling off and greatly extend the service life of the jaw plate, thereby improving the cost performance of the new large-scale composite jaw plate.

[0007] The purpose of the utility model is achieved by the following methods:

[0008] A novel highly wear-resistant and anti-falling composite jaw plate comprises a jaw plate substrate, on which teeth are arranged, and transparent wear-resistant block preset holes are arranged on the teeth, and the wear-resistant blocks are inserted in the wear-resistant block preset holes.

[0009] The above-mentioned new type of highly wear-resistant and anti-falling composite jaw plate, the preset hole of the wear-resistant block is a trapezoidal hole, the working surface corresponds to the short bottom of the trapezoid, and the long bottom of the trapezoid away from the working surface corresponds to the corresponding wear-resistant block is also a trapezoidal wear-resistant block, and the corresponding wear-resistant block is also a trapezoidal wear-resistant block.

[0010] The above-mentioned novel highly wear-resistant and anti-falling composite jaw plate, the wear-resistant block is a high-chromium cast iron wear-resistant block.

[0011] The above-mentioned novel highly wear-resistant and anti-falling composite jaw plate has trapezoidal teeth, and the working surface of the teeth corresponds to a small area of ​​the trapezoidal surface.

[0012] The above-mentioned novel highly wear-resistant and anti-falling composite jaw plate has an epoxy resin bonding layer between the wear-resistant block and the preset hole of the wear-resistant block.

[0013] The above-mentioned novel highly wear-resistant and anti-falling composite jaw plate, the jaw plate matrix material is austenitic manganese steel.

[0014] Compared with the prior art, the utility model has the following technical effects:

[0015] The utility model patent can prevent the high chromium cast iron wear-resistant block from falling off. During the process of jaw plate teeth wearing during operation, the high chromium cast iron wear-resistant block always plays a wear-resistant role, which greatly prolongs the service life of the large composite jaw plate. The utility model can prevent the high chromium cast iron wear-resistant block from falling off and can greatly prolong the service life of the jaw plate, thus improving the cost performance of the new large composite jaw plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model.

[0017] Figure 2 for Figure 1 AA section view.

[0018] Figure 3 Schematic diagram of the structure of a traditional composite jaw plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The following is combined with Figure 1-Figure 2 The structure and working process of the utility model are specifically described in detail.

[0024] like Figure 1 and Figure 2 A novel highly wear-resistant and anti-falling composite jaw plate shown comprises a jaw plate substrate 1, on which teeth 2 are arranged, and transparent wear-resistant block preset holes are arranged on the teeth, and wear-resistant blocks 3 are inserted in the wear-resistant block preset holes.

[0025] The novel high wear-resistant and anti-falling composite jaw plate described in the utility model has a pre-set hole in the wear-resistant block which is a trapezoidal hole. The working surface corresponds to the short bottom of the trapezoid, and the long bottom of the trapezoid away from the working surface corresponds to the long bottom of the trapezoid. The corresponding wear-resistant block is also a trapezoidal wear-resistant block.

[0026] The novel highly wear-resistant and anti-falling composite jaw plate described in the utility model, the wear-resistant block is a high-chromium cast iron wear-resistant block.

[0027] The novel highly wear-resistant and anti-falling composite jaw plate of the utility model has trapezoidal teeth, and the working surface of the teeth corresponds to a small area of ​​the trapezoidal surface.

[0028] The novel highly wear-resistant and anti-falling composite jaw plate described in the utility model has an epoxy resin bonding layer between the wear-resistant block and the preset hole of the wear-resistant block.

[0029] The novel highly wear-resistant and anti-falling composite jaw plate described in the utility model has a jaw plate base material made of austenitic manganese steel.

[0030] The working process of the utility model is as follows:

[0031] 1. According to the wear failure form and scope of the jaw plate, transparent high-chromium cast iron wear-resistant pre-set holes with reasonable spacing are pre-set on the wear working surface of the jaw plate teeth. The pre-set holes of the high-chromium cast iron wear-resistant blocks are designed to have the same size in the width direction and to be larger at the bottom and smaller at the top in the length direction. At the same time, the high-chromium cast iron wear-resistant blocks are also designed to have a size that matches the pre-set holes of the high-chromium cast iron wear-resistant blocks. For large jaw plates, this pre-designed transparent pre-set hole, like the quenching process hole, can greatly improve the hardenability of the austenitic manganese steel matrix, ensure that the entire austenitic manganese steel matrix is ​​easy to harden, and improve the heat treatment performance of the jaw plate matrix. At the same time, this transparent hole is also easy to clean, which provides convenience for inlaying high-chromium cast iron wear-resistant blocks.

[0032] 2. Design the high chromium cast iron wear-resistant block to a size that matches the preset hole of the high chromium cast iron wear-resistant block. The high chromium cast iron wear-resistant block has the same size in the width direction and is designed to be larger at the bottom and smaller at the top in the length direction. Due to the small size of the high chromium cast iron wear-resistant block, it is easy to be hardened through during air-cooling quenching, which improves the overall hardness and wear resistance of the high chromium cast iron wear-resistant block. After quenching, the outer surface of the high chromium cast iron wear-resistant block is cleaned and polished, and at the same time, the preset hole of the wear-resistant block reserved on the wear working surface of the large jaw plate teeth is cleaned. A layer of epoxy resin glue is evenly applied on the outer surface of the high chromium cast iron wear-resistant block and the inner surface of the preset hole of the wear-resistant block, and then the high chromium cast iron wear-resistant block is placed from bottom to top in the preset hole of the wear-resistant block, and left for a period of time so that the wear-resistant block is completely placed in the preset hole of the wear-resistant block reserved on the wear working surface of the large jaw plate teeth.

[0033] 3. When installing the large jaw plate, install the large composite static jaw plate on the front wall of the fixed static jaw plate of the jaw crusher, and install the large composite movable jaw plate on the movable jaw body of the jaw crusher. Use fixing bolts and compression wedges to fix the static jaw plate and movable jaw plate, so that the high chromium cast iron wear-resistant block cannot fall off. When the large jaw plate is working, the high toughness and rheological properties of austenitic manganese steel are utilized. The more impact the high chromium cast iron wear-resistant block is, the tighter it is fixed, and it will not fall off. At the same time, since the thickness of the high chromium cast iron wear-resistant block is the same as the thickness of the jaw plate teeth, the high chromium cast iron wear-resistant block always plays a wear-resistant role during the wear of the jaw plate teeth at work, thus extending the service life of the large composite jaw plate.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims

1. A novel highly wear-resistant and anti-falling composite jaw plate, comprising a jaw plate base (1), on which teeth (2) are arranged, characterized in that: A transparent wear-resistant block pre-setting hole is provided on the tooth, and the wear-resistant block (3) is inserted into the wear-resistant block pre-setting hole.

2. The novel highly wear-resistant and anti-falling composite jaw plate according to claim 1 is characterized in that: The preset hole of the wear-resistant block is a trapezoidal hole, the working surface corresponds to the short bottom of the trapezoid, the hole away from the working surface corresponds to the long bottom of the trapezoid, and the corresponding wear-resistant block is also a trapezoidal wear-resistant block.

3. The novel highly wear-resistant and anti-falling composite jaw plate according to claim 1 is characterized in that: The wear-resistant block is a high-chromium cast iron wear-resistant block.

4. The novel highly wear-resistant and anti-falling composite jaw plate according to claim 1 is characterized in that: The teeth are trapezoidal teeth, and the working surface of the teeth corresponds to a small area of ​​the trapezoidal surface.

5. The novel highly wear-resistant and anti-falling composite jaw plate according to claim 1 is characterized in that: An epoxy resin bonding layer is provided between the wear-resistant block and the pre-set hole of the wear-resistant block.

6. The novel highly wear-resistant and anti-falling composite jaw plate according to claim 1 is characterized in that: The jaw plate substrate is made of austenitic manganese steel.

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