A wear-resistant protection assembly for a shredder

Abstract

The utility model discloses a kind of wear-resistant protection assemblies for jaw crusher, it is related to jaw crusher field, to solve the significant defects of existing jaw crusher on the two key wear points of adjusting block contact lining plate and inlet static jaw plate upper end, to cause material waste and maintenance inconvenience, even affect equipment performance and life problem, including rack, the crushing cavity is equipped in the rack, one side of the crushing cavity is equipped with static jaw plate, the other side of the crushing cavity is equipped with dynamic jaw plate, the dynamic jaw plate is placed with the static jaw plate into V type structure, the side edge of the dynamic jaw plate is connected with split lining plate, the other end of the split lining plate is connected with adjusting block, the adjusting block is slidably connected with the rack, the advantage is that: by split lining plate and wear-resistant lining, the key wear point in equipment is upgraded and protected, reduces the maintenance consumables of equipment, improves the performance and life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of jaw crusher technology, and in particular to a wear-resistant protective component for jaw crushers. Background Technology

[0002] During the operation of a jaw crusher, the internal components of its crushing chamber, especially the area between the moving and stationary jaws, are subjected to severe impacts, compression, and friction from materials over a long period, resulting in significant wear. This wear directly affects the equipment's working efficiency, output particle size, and maintenance costs. Current technologies have significant shortcomings in the protective structures for critical wear areas within the crushing chamber, mainly in the following two aspects: First, the design of the contact liner between the adjusting block and the moving jaw plate is unreasonable, leading to premature local failure and material waste. Currently, most jaw crushers use a single, integral wear-resistant liner to protect the area where the moving jaw plate contacts the adjusting block (or thrust plate). The purpose of this liner is to transmit crushing force and reduce wear on the contact surface. However, in actual operation, due to the periodic and complex oscillation of the moving jaw, the contact between the liner and the toggle plate box (or adjusting block support) is not static, but rather involves continuous micro-sliding and high-stress compression at both ends. This condition causes the contact areas at both ends of the liner to become the most severely worn areas. Often, while the middle of the liner still has considerable thickness and is usable, the ends have already failed due to excessive wear, resulting in dents or even cracks. Because the liner is an integral structure, once a part fails, the entire liner must be disassembled and replaced. This not only wastes the still usable middle part of the material, increasing spare parts costs, but also makes replacing the entire liner cumbersome and time-consuming, leading to prolonged equipment downtime and affecting production continuity.

[0003] Secondly, the upper part of the stationary jaw plate in the feed inlet area lacks effective protection, resulting in abnormally severe wear. The feed inlet of a jaw crusher is the area where materials first come into contact with and begin to be crushed. The stones falling here are usually large in volume, irregular in shape, and possess high potential energy and impact force. In existing equipment, the upper part of the stationary jaw plate, i.e., the part near the feed inlet, is often directly constructed from the same material as the lower part, or only has the same toothed plates. This area bears the initial, almost perpendicular, violent impact of the material, and at the same time, large stones generate intense scraping and grinding as they adjust their posture to enter the crushing chamber. Due to the lack of reinforced protection measures for this special location, the upper part of the stationary jaw plate becomes the fastest-wearing and most severely affected part of the entire jaw plate. Its premature wear and deformation will change the initial geometry of the feed inlet, affecting the bite angle, and may lead to problems such as poor feeding, reduced crushing efficiency, and uneven product particle size. Frequent replacement of the entire stationary jaw plate or large-area repair is costly and involves a large amount of maintenance work. Utility Model Content

[0004] In response to the above situation and to overcome the shortcomings of the existing technology, this utility model provides a wear-resistant protective component for jaw crushers. This design effectively solves the significant defects in the two key wear points of existing jaw crushers, namely the contact liner of the adjusting block and the upper part of the static jaw plate of the feed inlet, which leads to material waste, inconvenience in maintenance, and even affects the performance and lifespan of the equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The present invention includes a frame, a crushing chamber is provided inside the frame, a stationary jaw plate is provided on one side of the crushing chamber, a movable jaw plate is provided on the other side of the crushing chamber, the movable jaw plate and the stationary jaw plate are arranged in a V-shape, a split-type liner is connected to the side of the movable jaw plate, and an adjusting block is connected to the other end of the split-type liner, the adjusting block being slidably connected to the frame.

[0006] Preferably, the split liner includes a liner head, and there are two sets of liner heads. The two sets of liner heads are fixedly connected to a detachable liner body. Both the moving jaw plate and the adjusting block are provided with liner boxes that are fixedly connected to the liner heads.

[0007] Preferably, the liner head has a trapezoidal cross-section, the inner side of the liner head is provided with a groove that mates with the liner body, and a first fixing bolt is installed between the liner body and the liner head.

[0008] Preferably, the liner head is provided with a first countersunk hole, and the first fixing bolt is located in the first countersunk hole.

[0009] Preferably, a tripod is provided at the upper end of the stationary jaw plate, the tripod is fixedly connected to the frame, and a wear-resistant liner is fixedly connected to the tripod.

[0010] Preferably, the wear-resistant liner is provided with a plurality of equally spaced rib grooves, and a second countersunk hole is provided in the rib groove, and a second fixing bolt is provided in the second countersunk hole.

[0011] Compared with the prior art, the outstanding advantages of this utility model are: This application replaces the traditional liner with a split liner, reducing the cost of replacing spare parts, achieving precise protection and low-cost maintenance of critical wear areas of the equipment, and significantly improving the reliability and economy of equipment operation. In addition, by setting an independently replaceable wear-resistant liner above the stationary liner, the more expensive stationary jaw plate body is protected, extending its overall service life and stabilizing the geometry and crushing performance of the feed inlet. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2This is a schematic diagram of the axial structure of the split-type liner of this utility model.

[0014] Figure 3 This is a schematic diagram of the exploded structure of the split-type liner of this utility model.

[0015] Figure 4 This is a schematic diagram of the cross-sectional structure of the split-type liner of this utility model.

[0016] Figure 5 This is a schematic diagram of the split-type liner connection structure of this utility model.

[0017] Figure 6 This is a schematic diagram of the connection structure of the wear-resistant liner of this utility model.

[0018] Figure 7 This is a schematic diagram of the second countersunk hole connection structure of this utility model.

[0019] Labels in the diagram: 1. Frame; 2. Stationary jaw plate; 3. Moving jaw plate; 4. Split liner; 401. Liner head; 402. Liner body; 403. Slot; 404. First fixing bolt; 405. Countersunk hole; 5. Adjusting block; 6. Tripod; 7. Wear-resistant liner; 8. Second countersunk hole; 9. Second fixing bolt. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see the appendix Figure 1-7 This embodiment provides a wear-resistant protective component for a jaw crusher, comprising a frame 1, which constitutes the main support structure of the equipment and forms a crushing chamber inside. A stationary jaw plate 2 is fixedly installed on one side of the crushing chamber, and a reciprocating movable jaw plate 3 is installed on the other side. The movable jaw plate 3 and the stationary jaw plate 2 are arranged in a V-shape to form a space for material crushing. The swing of the movable jaw plate 3 is driven by a drive mechanism such as an eccentric shaft (not shown in the figure). Its back (the side away from the stationary jaw plate 2) is connected to the frame 1 through an adjusting block 5. The adjusting block 5 can slide along the guide rail on the frame 1 to adjust and compensate the position of the movable jaw plate 3 and transmit the crushing force.

[0022] One of the core improvements in this embodiment is the split-type liner 4 located between the moving jaw plate 3 and the adjusting block 5. The traditional integral liner is replaced by a combination of three main parts: a long strip-shaped liner body 402 and two liner heads 401 located at its two ends; the liner body 402 is preferably made of high manganese steel or similar high-toughness wear-resistant material, which can withstand the main compressive and bending stresses, while the two liner heads 401 are preferably made of alloy materials with higher hardness and better wear resistance (such as high-chromium cast iron), specifically to cope with high-stress sliding wear. Liner boxes are fixedly installed (e.g., welded or bolted) on the back of the moving jaw plate 3 and the contact surface of the adjusting block 5, respectively. The liner boxes are U-shaped or C-shaped structures, used to accommodate and position the liner heads 401.

[0023] like Figure 3 and Figure 4 As shown, the cross-section of the liner head 401 is approximately trapezoidal, and a groove 403 is machined on the side (inner side) near the liner body 402 that precisely matches the shape of the end of the liner body 402. The trapezoidal design of the liner head 401 allows the inner side of the liner head 401 to wrap around the liner body 402, improving the stability of the connection. Furthermore, the outer side of the liner head 401 matches the thickness of the liner body 402, facilitating installation between the liner head 401 and the liner box. During installation, both ends of the liner body 402 are inserted into the grooves 403 of the two liner heads 401 to achieve initial positioning and load-bearing. Then, the two are fastened together by a first fixing bolt 404 passing through the first countersunk hole 405 on the liner head 401. The design of the first countersunk hole 405 ensures that the bolt head does not protrude from the working surface, avoiding interference and additional wear. Thus, the liner head 401, the liner body 402, and the first fixing bolt 404 together form a rigid connector that is easy to disassemble and is installed as a whole between the liner boxes at both ends.

[0024] When the liner head 401, which is subjected to direct sliding friction, wears down to the point of needing replacement after long-term operation, maintenance personnel only need to remove the first fixing bolt 404 to remove the worn liner head 401 from the liner body 402 and replace it with a new one, without touching the still usable liner body 402. This enables precise and rapid replacement of worn parts, greatly saving spare parts costs and reducing replacement workload and downtime.

[0025] like Figure 6 and Figure 7As shown, a triangular support frame—a tripod—is fixed to the upper end of the stationary jaw plate 2, directly opposite the feed inlet, by welding or high-strength bolts. This tripod is also firmly connected to the side wall of the frame 1, providing a solid support foundation and ensuring that it can withstand huge impact loads without deformation. On the inclined surface of the tripod (i.e., the side facing the feed inlet and receiving material impact), a special wear-resistant liner 7 is fixedly installed by multiple second fixing bolts 9.

[0026] The wear-resistant liner 7 is also made of ultra-high wear-resistant materials (such as tungsten carbide composite materials or bimetallic composite plates). Its surface is not flat, but rather designed with multiple parallel, equally spaced longitudinal ribs. These ribs not only enhance the structural rigidity of the liner, preventing it from bending under impact, but more importantly, they form the "ribs" of impact resistance, dispersing concentrated impact forces and effectively resisting cutting and scraping wear through the raised portions between the ribs. The second fixing bolt 9 is installed in the second countersunk hole 8 machined at the bottom of the rib, ensuring that the bolt head is protected and avoids direct wear.

[0027] The wear-resistant liner 7 acts as a "protective shield" on the upper end of the stationary jaw plate 2, specifically designed to withstand the harsh working conditions at the feed inlet. When it wears out, it can be disassembled and replaced individually, thus protecting the more expensive stationary jaw plate 2 body, extending its overall service life, and stabilizing the geometry and crushing performance of the feed inlet.

[0028] The overall workflow of this application is as follows: During the operation of the jaw crusher, the split-type liner 4 is located between the moving jaw plate 3 and the adjusting block 5, transmitting crushing force and bearing sliding friction. The highly wear-resistant liner heads 401 at both ends are easily replaced as consumable parts, solving the waste problem of the entire liner being scrapped due to wear at both ends. Simultaneously, the ribbed wear-resistant liner 7, supported by a tripod at the upper end of the stationary jaw plate 2, effectively resists the impact and scraping of large pieces of material entering the jaw, and this liner can also be replaced separately. This modular, split-type wear-resistant protection design achieves precise protection and low-cost maintenance of critical wear areas of the equipment, significantly improving the reliability and economy of equipment operation.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wear-resistant protective component for a jaw crusher, characterized in that: The machine includes a frame (1), which has a crushing chamber. A stationary jaw plate (2) is provided on one side of the crushing chamber, and a movable jaw plate (3) is provided on the other side of the crushing chamber. The movable jaw plate (3) and the stationary jaw plate (2) are arranged in a V-shape. A split liner plate (4) is connected to the side of the movable jaw plate (3), and an adjusting block (5) is connected to the other end of the split liner plate (4). The adjusting block (5) is slidably connected to the frame (1).

2. The wear-resistant protective component for a jaw crusher according to claim 1, characterized in that: The split liner (4) includes a liner head (401), which has two sets. The two sets of liner heads (401) are fixedly connected to a detachable liner body (402). The moving jaw plate (3) and the adjusting block (5) are both provided with liner boxes that are fixedly connected to the liner head (401).

3. A wear-resistant protective component for a jaw crusher according to claim 2, characterized in that: The liner head (401) has a trapezoidal cross section. The inner side of the liner head (401) is provided with a slot (403) that mates with the liner body (402). A first fixing bolt (404) is installed between the liner body (402) and the liner head (401).

4. A wear-resistant protective component for a jaw crusher according to claim 3, characterized in that: The liner head (401) is provided with a first countersunk hole (405), and the first fixing bolt (404) is located in the first countersunk hole (405).

5. A wear-resistant protective component for a jaw crusher according to claim 1, characterized in that: The upper end of the stationary jaw plate (2) is provided with a tripod, which is fixedly connected to the frame (1), and a wear-resistant liner (7) is fixedly connected to the tripod.

6. A wear-resistant protective component for a jaw crusher according to claim 5, characterized in that: The wear-resistant liner (7) is provided with a plurality of equally spaced rib grooves, and a second countersunk hole (8) is provided in the rib groove, and a second fixing bolt (9) is provided in the second countersunk hole (8).

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