Crushing roller with crushing teeth convenient to maintain and replace

Abstract

The utility model relates to a crushing roller with crushing teeth convenient to maintain and replace, and belongs to the technical field of crushers. The crushing teeth and the roller are designed to be of a split structure, the crushing teeth are slidably clamped with the trapezoidal positioning grooves through the T-shaped connecting blocks and are axially fixed through the annular cover plate, independent mounting and dismounting of the crushing teeth are achieved, and when a single crushing tooth is damaged, a damaged part can be replaced only by dismounting the annular cover plate, so that the crushing efficiency is greatly improved. The problem that the whole crushing roller is scrapped due to abrasion of a single crushing tooth is avoided, the cost is saved, the crushing teeth can be replaced in situ, the maintenance cost is greatly reduced, and meanwhile the maintenance efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of crusher technology, specifically relating to a crushing roller that facilitates maintenance and replacement of crushing teeth. Background Technology

[0002] With industrial development, crushers have been widely used in various fields, such as mining, construction, and metallurgy. As one of the key components of a crusher, the crushing roller's main function is to break large materials into smaller particles. However, during the crushing process, the crushing teeth are prone to wear and damage, requiring regular maintenance and replacement.

[0003] Traditional crushing rollers typically employ an integral structure, with the crushing teeth welded to the roller body. When the crushing teeth wear or are damaged, the entire crushing roller needs to be disassembled for repair or replacement, which is not only time-consuming and labor-intensive but also increases maintenance costs. Furthermore, due to the large weight of the crushing roller, specialized lifting equipment is required during disassembly and installation, further increasing the difficulty and cost of maintenance. Utility Model Content

[0004] To overcome the limitations of traditional crushing rollers in the background technology, which typically employ an integral structure with the crushing teeth welded to the roller body, requiring the entire crushing roller to be disassembled for repair or replacement when the crushing teeth are worn or damaged, is not only time-consuming and labor-intensive but also increases maintenance costs. Furthermore, due to the large weight of the crushing roller, specialized lifting equipment is required during disassembly and installation, further increasing the difficulty and cost of maintenance. This utility model provides a crushing roller that facilitates the maintenance and replacement of crushing teeth. By designing the crushing teeth and roller as a separate structure, the crushing teeth are slidably engaged with the trapezoidal positioning groove via a T-shaped connecting block and axially fixed by an annular cover plate, enabling independent installation and disassembly of the crushing teeth. When a single crushing tooth is damaged, only the annular cover plate needs to be removed to replace the damaged part, avoiding the problem of the entire crushing roller being scrapped due to the wear of a single crushing tooth, saving costs. Moreover, the crushing teeth can be replaced in situ, greatly reducing maintenance costs and improving maintenance efficiency.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A crushing roller that facilitates maintenance and replacement of crushing teeth mainly includes a roller, crushing teeth, an annular cover plate, and a roller shaft. Multiple positioning grooves penetrating the ends are evenly opened on the outer circumference of the roller. The cross-section of the positioning groove is a trapezoidal structure. Multiple sets of crushing teeth are slidably installed in the positioning groove. A T-shaped connecting block is provided at the bottom of the crushing tooth and slidably engages with the trapezoidal positioning groove. The bottom cross-section of the T-shaped connecting block is a trapezoidal structure. The end faces of adjacent T-shaped connecting blocks are in contact with each other. An annular cover plate for axially fixing the crushing teeth is installed at the end of the roller by screws. A detachable roller shaft is installed at the end of the roller.

[0006] The inner wall of the roller is uniformly provided with rectangular slots along the circumferential direction, and the end of the roller shaft is uniformly provided with inserts that engage with the rectangular slots along the circumferential direction. The roller shaft is provided with a flange, and the end face of the roller is provided with a first threaded hole corresponding to the through hole on the end face of the flange.

[0007] The inner diameter of the annular cover plate is larger than the diameter of the flange. The annular cover plate is sleeved on the roller shaft and fixedly connected to the roller with screws.

[0008] The roller end face is provided with a second threaded hole, and the annular cover plate is provided with positioning holes corresponding to the second threaded hole evenly along the circumferential direction.

[0009] The beneficial effects of this utility model are:

[0010] This invention designs the crushing teeth and roller as separate structures. The crushing teeth are slidably engaged with the trapezoidal positioning groove by a T-shaped connecting block and axially fixed by an annular cover plate, realizing independent installation and disassembly of the crushing teeth. When a single crushing tooth is damaged, only the annular cover plate needs to be removed to replace the damaged part, avoiding the problem of the entire crushing roller being scrapped due to the wear of a single crushing tooth, saving costs. Furthermore, the crushing teeth can be replaced in situ on the equipment, greatly reducing maintenance costs and improving maintenance efficiency. Attached Figure Description

[0011] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0012] Figure 2 This is a partial exploded view of this utility model.

[0013] Figure 3 This is a schematic diagram of the three-dimensional structure of the roller. Detailed Implementation

[0014] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0015] This utility model discloses a crushing roller with easily replaceable crushing teeth. The crushing roller mainly includes a roller 1, crushing teeth 2, an annular cover plate 3, and a roller shaft 4. Multiple positioning grooves 101 are evenly distributed on the outer circumference of the roller 1, penetrating to its ends. The cross-section of the positioning grooves 101 is trapezoidal. Multiple sets of crushing teeth 2 are slidably installed within the positioning grooves 101. A T-shaped connecting block 201 is provided at the bottom of each crushing tooth 2, which slidably engages with the trapezoidal positioning groove 101. The bottom cross-section of the T-shaped connecting block 201... The roller 1 is designed as a trapezoidal structure, with the end faces of adjacent T-shaped connecting blocks 201 in contact with each other. The end of the roller 1 is fitted with an annular cover plate 3 for axially fixing the crushing teeth 2 by screws. The end of the roller 1 is fitted with a detachable roller shaft 4. Rectangular slots 102 are evenly provided on the inner wall of the roller 1 along the circumferential direction. Inserts 401 that engage with the rectangular slots 102 are evenly provided on the end of the roller shaft 4 along the circumferential direction. A flange 402 is provided on the roller shaft 4. A first threaded hole 103 corresponding to the through hole on the end face of the flange 402 is provided on the end face of the roller 1.

[0016] During initial installation, the operator inserts the insert block 401 of the roller 4 into the rectangular slot 102 on the inner wall of the roller 1. Torque transmission is achieved through the circumferential engagement of the insert block 401 and the slot 102. Subsequently, the through hole on the flange 402 is aligned with the first threaded hole 103 on the end face of the roller 1 and tightened with bolts, thereby completing the axial fixation of the roller 4 and the roller 1 and forming an integral transmission structure. Next, the T-shaped connecting block 201 at the bottom of the crushing tooth 2 is slidably embedded into the trapezoidal positioning groove 101 on the outer circumference of the roller 1. Since the bottom of the T-shaped connecting block 201 has a trapezoidal cross section, it forms a radial self-locking with the wedge-shaped engagement of the positioning groove 101, ensuring that the crushing tooth 2 will not disengage when rotating at high speed. The end faces of adjacent T-shaped connecting blocks 201 are in close contact, which can form a continuous support structure, enhance the overall impact resistance, and reduce the risk of material entering the positioning groove 101. The annular cover plate 3 is pressed against the end of the roller 1 by screws, so that the annular cover plate 3 contacts and is fixed to the end face of the T-shaped connecting block 201, applying axial constraint force to the crushing tooth 2 to prevent it from sliding along the positioning groove 101, thereby improving the stability of the crushing tooth 2 during operation.

[0017] When it is necessary to repair or replace the crushing teeth, the operator first removes the fixing screws of the annular cover plate 3 to release the axial constraint on the crushing teeth 2. Then, the damaged crushing teeth 2 are removed by sliding along the positioning groove 101. After replacing the new crushing teeth 2, they are inserted into the positioning groove 101 in reverse. The annular cover plate and the roller shaft are then reset and fixed to complete the replacement. It is not necessary to disassemble the entire crushing roller. The operation can be carried out in the original position of the equipment, avoiding the hoisting operation in traditional maintenance. This facilitates the repair and replacement of the crushing teeth, improves the working efficiency of the crusher, and greatly reduces maintenance costs.

[0018] The inner diameter of the annular cover plate 3 is larger than the diameter of the flange 402. The annular cover plate 3 is sleeved on the roller shaft 4 and fixedly connected to the roller 1 by screws. A second threaded hole 104 is opened on the end face of the roller 1. Positioning holes 301 corresponding to the second threaded hole 104 are evenly opened on the annular cover plate 3 along the circumferential direction.

[0019] When the crusher tooth 2 needs to be repaired or replaced, only the annular cover plate 3 needs to be removed, without disassembling the roller 1 and roller shaft 4, which facilitates the repair and replacement of the crusher tooth 2 and improves work efficiency.

[0020] Work process:

[0021] During initial installation, the operator inserts the insert block 401 of the roller 4 into the rectangular slot 102 on the inner wall of the roller 1. Torque transmission is achieved through the circumferential engagement of the insert block 401 and the slot 102. Subsequently, the through hole on the flange 402 is aligned with the first threaded hole 103 on the end face of the roller 1 and tightened with bolts, thereby completing the axial fixation of the roller 4 and the roller 1 and forming an integral transmission structure. Next, the T-shaped connecting block 201 at the bottom of the crushing tooth 2 is slidably embedded into the trapezoidal positioning groove 101 on the outer circumference of the roller 1. Since the bottom of the T-shaped connecting block 201 has a trapezoidal cross section, its wedge-shaped engagement with the positioning groove 101 forms a radial self-locking mechanism, ensuring that the crushing tooth 2 will not disengage during high-speed rotation. The end faces of adjacent T-shaped connecting blocks are in close contact, forming a continuous support structure, enhancing the overall impact resistance, and reducing the risk of material entering the positioning groove 101. The annular cover plate 3 is pressed against the end of the roller 1 by screws, so that the annular cover plate 3 contacts and is fixed to the end face of the T-shaped connecting block 201, applying axial constraint force to the crushing tooth 2 to prevent it from sliding along the positioning groove 101 and improving the stability during operation.

[0022] When it is necessary to repair or replace the crushing teeth, the operator first removes the fixing screws of the annular cover plate 3 to release the axial constraint on the crushing teeth 2. Then, the damaged crushing teeth 2 are removed by sliding along the positioning groove 101. After replacing the new crushing teeth 2, they are inserted into the positioning groove 101 in reverse. The annular cover plate and the roller shaft are then reset and fixed to complete the replacement. It is not necessary to disassemble the entire crushing roller. The operation can be carried out in the original position of the equipment, avoiding the hoisting operation in traditional maintenance. This facilitates the repair and replacement of the crushing teeth, improves the working efficiency of the crusher, and greatly reduces maintenance costs.

[0023] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A crushing roller with easily replaceable crushing teeth, characterized in that: The aforementioned crushing roller for easy maintenance and replacement of crushing teeth includes a roller (1), crushing teeth (2), an annular cover plate (3), and a roller shaft (4). The roller (1) has multiple positioning grooves (101) evenly distributed on its outer circumference, which penetrate its ends. The cross-section of the positioning groove (101) is a trapezoidal structure. Multiple sets of crushing teeth (2) are slidably installed in the positioning groove (101). The bottom of the crushing teeth (2) is provided with a T-shaped connecting block (201) that is slidably engaged with the trapezoidal positioning groove (101). The bottom cross-section of the T-shaped connecting block (201) is a trapezoidal structure. The end faces of adjacent T-shaped connecting blocks (201) are in contact with each other. The end of the roller (1) is fitted with an annular cover plate (3) for axially fixing the crushing teeth (2) by screws. The end of the roller (1) is fitted with a detachable roller shaft (4).

2. A crushing roller with easily replaceable crushing teeth as described in claim 1, characterized in that: The inner wall of the roller (1) is uniformly provided with rectangular slots (102) along the circumferential direction. The end of the roller shaft (4) is uniformly provided with inserts (401) that engage with the rectangular slots (102) along the circumferential direction. The roller shaft (4) is provided with flanges (402). The end face of the roller (1) is provided with a first threaded hole (103) corresponding to the through hole on the end face of the flange (402).

3. A crushing roller with easily replaceable crushing teeth as described in claim 2, characterized in that: The inner diameter of the annular cover plate (3) is larger than the diameter of the flange (402). The annular cover plate (3) is sleeved on the roller shaft (4) and fixedly connected to the roller (1) by screws.

4. A crushing roller with easily replaceable crushing teeth as described in claim 3, characterized in that: The roller (1) has a second threaded hole (104) on its end face, and the annular cover plate (3) has a positioning hole (301) that corresponds to the second threaded hole (104) evenly distributed along the circumferential direction.

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