Structure capable of conveniently and quickly replacing roller skin for crusher

Abstract

The utility model relates to the technical field of crushers, in particular to a structure capable of conveniently and quickly replacing roller skins for a crusher, which comprises a rotatable main shaft, two ends of the main shaft are arranged on two bearing seats, and a crushing roller is sleeved on the main shaft between the two bearing seats; the positioning sleeve sleeves the main shaft close to the first end of the main shaft and is fixedly connected with the main shaft; the first roller disc is slidably sleeved on the positioning sleeve, and the first conical surface of the excircle surface of the first roller disc is matched with the second conical surface of the first end of the inner wall of the crushing roller; the second roller disc sleeves the main shaft close to the second end of the main shaft and is fixedly connected with the main shaft, and a third conical surface of the excircle surface of the second roller disc is matched with a fourth conical surface of the second end of the inner wall of the crushing roller; the multiple lead screws are evenly arranged in the circumferential direction of the main shaft and arranged between the first roller disc and the second roller disc, and the two ends of each lead screw penetrate through the first roller disc and the second roller disc respectively and then are provided with nuts; the utility model has the advantages that the bearings on the bearing seats at the two ends of the main shaft do not need to be detached, and the replacement process is greatly simplified.

Description

Technical Field

[0001] This utility model relates to the field of crusher technology, specifically to a structure for convenient and quick replacement of roller skins in a crusher. Background Technology

[0002] Toothed roll crushers are widely used crushing equipment in many industries such as mining, metallurgy, building materials, and chemicals. Their main working principle is to crush materials by squeezing, shearing, and splitting them using two relatively rotating toothed rolls. As a key component of the toothed roll crusher that directly contacts the material, the crushing rolls bear enormous friction, impact, and wear during the crushing process. Therefore, they are one of the most easily damaged parts of the crusher and need to be replaced regularly to ensure the normal operation and crushing effect of the crusher.

[0003] In traditional toothed roll crusher structures, replacing the crushing rolls is a complex and time-consuming task. Typically, due to an inefficient design of the installation structure between the crushing rolls and the main shaft and other components, replacing the crushing rolls requires disassembling the bearings on the main shaft. This process involves multiple steps, including removing various connecting parts and seals related to the bearings, and requires the use of specialized tools and equipment for disassembly and installation. Because bearings are high-precision components, even slight carelessness during disassembly and installation can lead to bearing damage, affecting their service life and performance, and consequently impacting the overall operational stability and reliability of the crusher. Utility Model Content

[0004] In view of this, the present invention provides a structure for convenient and quick replacement of roller skins for crushers, aiming to solve the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a structure for convenient and quick replacement of roller skins in a crusher, comprising:

[0006] A rotatable main shaft has two ends mounted on two bearing seats, and a crushing roller is sleeved on the main shaft between the two bearing seats.

[0007] A positioning sleeve is fitted onto the spindle near the first end of the spindle and is fixedly connected to the spindle.

[0008] The first roller disc is slidably sleeved on the positioning sleeve, and the first conical surface of its outer circular surface is adapted to the second conical surface of the first end of the inner wall of the crushing roller.

[0009] The second roller is sleeved on the main shaft near the second end of the main shaft and fixedly connected to the main shaft. The third conical surface of its outer circular surface is adapted to the fourth conical surface of the second end of the inner wall of the crushing roller.

[0010] Multiple lead screws are evenly arranged along the circumference of the main shaft and positioned between the first and second roller discs. Each lead screw has a nut at both ends after passing through the first and second roller discs respectively.

[0011] A further improvement of this utility model is that the first roller is provided with a plurality of inner holes, each inner hole corresponding to a plurality of lead screws. The end of the lead screw passes through the first roller and extends into the inner hole. The inner hole is a first cone shape, with the larger end of the first cone shape close to the first end of the main shaft.

[0012] A further improvement of this utility model is that the first roller is assembled from multiple arc-shaped discs.

[0013] A further improvement of this utility model is that the first roller is composed of three arc-shaped discs assembled together.

[0014] A further improvement of this utility model is that the inner circular surface of the first roller is a fifth conical surface, and the outer circular surface of the positioning sleeve is a sixth conical surface, wherein the fifth conical surface and the sixth conical surface are adapted to each other.

[0015] A further improvement of this utility model is that a top shaft is fixedly sleeved between the positioning sleeve and the second roller, and the opposite ends of the positioning sleeve and the second roller respectively abut against the two ends of the top shaft. The first guide groove on the inner wall of the positioning sleeve is adapted to the first guide key on the main shaft, and the second guide groove on the inner wall of the second roller is adapted to the second guide key on the main shaft.

[0016] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows:

[0017] This invention provides a structure for convenient and quick replacement of roller skins in a crusher. When installing the crushing roller, the second roller disc is fitted onto the main shaft near the second end of the main shaft and fixedly connected. A positioning sleeve is fitted onto the main shaft near the first end of the main shaft and fixedly connected. Then, the crushing roller is fitted onto the main shaft from the first end, ensuring that the fourth conical surface of the second end of the inner wall of the crushing roller matches the third conical surface of the outer surface of the second roller disc. Next, the first roller disc is slidably fitted onto the positioning sleeve, ensuring that the second conical surface of the first end of the inner wall of the crushing roller matches the first conical surface of the outer surface of the first roller disc, achieving initial positioning. Finally, multiple lead screws are evenly arranged between the first and second roller discs along the circumference of the main shaft. Each lead screw passes through both ends of the first and second roller discs, and nuts are installed at both ends of the lead screws. By tightening the nuts, the first and second roller discs are brought closer together under the action of the lead screws, thereby tightly fixing the crushing roller between the first and second roller discs.

[0018] When it is necessary to remove the crushing roller, loosen the nuts at both ends of the screw to release the fastening force on the first and second roller discs. Since the first roller disc can slide on the positioning sleeve, it slides away from the crushing roller along the positioning sleeve, causing the conical surface fit between the first roller disc and the crushing roller to gradually separate, breaking the positioning restriction at one end of the crushing roller. At this time, the crushing roller is no longer subject to the fastening force at both ends and can slide out axially from the first end of the main shaft, completing the disassembly of the crushing roller. Compared with the existing technology, it is not necessary to disassemble the bearings on the bearing seats at both ends of the main shaft, which greatly simplifies the replacement process and saves a lot of time and labor costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the roller skin replacement structure described in this utility model;

[0021] Figure 2 This is a schematic diagram of the sixth conical surface of the roller skin replacement structure described in this utility model;

[0022] Figure 3 This is a schematic diagram of the arc-shaped disk structure of the roller skin replacement structure described in this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 10-Main shaft, 101-First guide key, 102-Second guide key, 11-Bearing seat, 12-Positioning sleeve, 121-Sixth conical surface, 13-First roller disc, 131-First conical surface, 132-Inner hole, 133-Arc disc, 134-Fifth conical surface, 14-Crushing roller, 141-Second conical surface, 142-Fourth conical surface, 15-Second roller disc, 151-Third conical surface, 16-Screw, 161-Nut, 17-Top shaft. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, in the following description, specific details such as particular system structures and technologies are set forth for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art should understand that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details hindering the description of the present invention.

[0026] This utility model provides a structure for convenient and quick replacement of roller skins in a crusher, as detailed in the attached instruction manual. Figure 1 To be continued Figure 3 It can be seen that a structure for a crusher that allows for convenient and quick replacement of roller skins mainly includes the following parts or components: main shaft 10, positioning sleeve 12, first roller disc 13, second roller disc 15, and lead screw 16.

[0027] In this utility model, the two ends of the rotatable main shaft 10 are mounted on two bearing seats 11, and a crushing roller 14 is sleeved on the main shaft 10 between the two bearing seats 11; the positioning sleeve 12 is sleeved on the main shaft 10 near the first end of the main shaft 10 and is fixedly connected to the main shaft 10; the first roller disc 13 is slidably sleeved on the positioning sleeve 12, and the first conical surface 131 of its outer circular surface is adapted to the second conical surface 141 of the first end of the inner wall of the crushing roller 14; the second roller disc 15 is sleeved on the main shaft 10 near the second end of the main shaft 10 and is fixedly connected to the main shaft 10, and the third conical surface 151 of its outer circular surface is adapted to the fourth conical surface 142 of the second end of the inner wall of the crushing roller 14; a plurality of lead screws 16 are evenly arranged along the circumference of the main shaft 10 and are located between the first roller disc 13 and the second roller disc 15, and each lead screw 16 is provided with a nut 161 after passing through the first roller disc 13 and the second roller disc 15 at both ends.

[0028] When installing the crushing roller 14, the second roller disc 15 is fitted onto the main shaft 10 near the second end of the main shaft 10 and fixedly connected. The positioning sleeve 12 is fitted onto the main shaft 10 near the first end of the main shaft 10 and fixedly connected. Then, the crushing roller 14 is fitted onto the main shaft 10 from the first end of the main shaft 10, so that the fourth conical surface 142 of the second end of the inner wall of the crushing roller 14 is adapted to the third conical surface 151 of the outer circular surface of the second roller disc 15. Then, the first roller disc 13 is slidably fitted onto the positioning sleeve 12, so that the second conical surface 141 of the first end of the inner wall of the crushing roller 14 is adapted to the first conical surface 131 of the outer circular surface of the first roller disc 13, thus achieving preliminary positioning. Finally, multiple lead screws 16 are evenly arranged between the first roller disc 13 and the second roller disc 15 along the circumference of the main shaft 10. Each lead screw 16 passes through the first roller disc 13 and the second roller disc 15 at both ends, and nuts 161 are installed at both ends of the lead screw 16. By tightening the nuts 161, the first roller disc 13 and the second roller disc 15 are brought closer together under the action of the lead screw 16, thereby firmly fixing the crushing roller 14 between the first roller disc 13 and the second roller disc 15.

[0029] When it is necessary to remove the crushing roller 14, loosen the nuts 161 at both ends of the screw 16 to release the fastening force on the first roller disc 13 and the second roller disc 15. Since the first roller disc 13 can slide on the positioning sleeve 12, the first roller disc 13 slides away from the crushing roller 14 along the positioning sleeve 12, so that the conical surface fit between the first roller disc 13 and the crushing roller 14 gradually separates, breaking the positioning restriction at one end of the crushing roller 14. At this time, the crushing roller 14 is no longer subject to the fastening effect at both ends and can slide out axially from the first end of the main shaft 10 to complete the disassembly of the crushing roller 14. There is no need to disassemble the bearings on the bearing seats 11 at both ends of the main shaft 10, which greatly simplifies the replacement process and saves a lot of time and labor costs.

[0030] As one embodiment, in conjunction with the appendix to the specification Figure 3 It can be seen that the first roller 13 is provided with multiple inner holes 132, and the multiple inner holes 132 correspond one-to-one with multiple lead screws 16. The end of the lead screw 16 passes through the first roller 13 and extends into the inner hole 132. The inner hole 132 is a first cone shape (not shown in the figure), and the larger end of the first cone shape is close to the first end of the main shaft 10.

[0031] The inner hole 132 corresponds one-to-one with the lead screw 16, providing accurate positioning and installation position for the lead screw 16. This ensures that the lead screw 16 can accurately pass through the first roller disc 13, preventing offset or misalignment during installation and guaranteeing the assembly accuracy of the entire structure. Simultaneously, the first tapered design of the inner hole 132, with its larger end closer to the first end of the main shaft 10, guides the end of the lead screw 16, facilitating smooth insertion of the lead screw 16 into the inner hole 132 and reducing installation difficulty.

[0032] The positioning and guiding function of the inner hole 132 makes the installation of the lead screw 16 more convenient and faster, reduces the adjustment time during the installation process, and improves the assembly efficiency of the entire equipment.

[0033] As one embodiment, in conjunction with the appendix to the specification Figure 3 It can be seen that the first roller disc 13 is assembled from multiple arc-shaped discs 133. The first roller disc 13 is assembled from three arc-shaped discs 133.

[0034] When installing the crushing roller 14, the arc-shaped discs 133 are smaller and lighter than the integral first roller disc 13, making them easier to handle. Each arc-shaped disc 133 can be individually fitted into the positioning sleeve 12 before assembly, significantly reducing the difficulty compared to fitting the entire first roller disc 13 into the positioning sleeve 12. When disassembling the crushing roller 14, the arc-shaped discs 133 can also be disassembled first and then removed individually, avoiding the inconvenience caused by the larger size and heavier weight of the integral first roller disc 13.

[0035] The first roller disc 13, assembled from three arc-shaped discs 133, has certain structural advantages. The shape of the arc-shaped disc 133 can better disperse the force. When the crushing roller 14 is subjected to impact force during operation, the arc-shaped disc 133 can evenly transmit the force to the main shaft 10 and the positioning sleeve 12, reducing stress concentration, thereby enhancing the strength and stability of the entire structure and extending the service life of the equipment.

[0036] As one embodiment, in conjunction with the appendix to the specification Figure 1 To be continued Figure 2 It can be seen that the inner circular surface of the first roller 13 is the fifth conical surface 134, and the outer circular surface of the positioning sleeve 12 is the sixth conical surface 121. The fifth conical surface 134 and the sixth conical surface 121 are adapted to each other. A top shaft 17 is fixedly sleeved between the positioning sleeve 12 and the second roller 15. The opposite ends of the positioning sleeve 12 and the second roller 15 respectively abut against the two ends of the top shaft 17. The first guide groove (not shown in the figure) on the inner wall of the positioning sleeve 12 is adapted to the first guide key 101 on the main shaft 10, and the second guide groove (not shown in the figure) on the inner wall of the second roller 15 is adapted to the second guide key 102 on the main shaft 10.

[0037] The positioning sleeve 12 is fitted with the first guide key 101 via the first guide groove, and the second roller disc 15 is fitted with the second guide key 102 via the second guide groove, both mounted on the main shaft 10. The keyway fit restricts the circumferential movement of the positioning sleeve 12 and the second roller disc 15, ensuring they can only rotate with the main shaft 10, thus guaranteeing the accuracy and stability of power transmission. The fifth conical surface 134 and the sixth conical surface 121 are mutually adapted. When the first roller disc 13 is mounted on the positioning sleeve 12, the fit between the fifth conical surface 134 and the sixth conical surface 121 generates a certain amount of friction and constraint. Through the fit between the fifth conical surface 134 and the sixth conical surface 121, and the setting of the top shaft 17, the axial movement of the positioning sleeve 12 during equipment operation can be effectively prevented, ensuring the stability and reliability of the entire structure.

[0038] It should be noted that in this patent application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A structure for convenient and quick replacement of roller skins in a crusher, characterized in that, include: A rotatable main shaft has two ends mounted on two bearing seats, and a crushing roller is sleeved on the main shaft between the two bearing seats. A positioning sleeve is fitted onto the spindle near the first end of the spindle and is fixedly connected to the spindle. The first roller disc is slidably sleeved on the positioning sleeve, and the first conical surface of its outer circular surface is adapted to the second conical surface of the first end of the inner wall of the crushing roller. The second roller is sleeved on the main shaft near the second end of the main shaft and fixedly connected to the main shaft. The third conical surface of its outer circular surface is adapted to the fourth conical surface of the second end of the inner wall of the crushing roller. Multiple lead screws are evenly arranged along the circumference of the main shaft and positioned between the first and second roller discs. Each lead screw has a nut at both ends after passing through the first and second roller discs respectively.

2. The structure for convenient and quick replacement of roller skin in a crusher according to claim 1, characterized in that, The first roller has multiple inner holes, each corresponding to a multiple lead screw. The end of the lead screw passes through the first roller and extends into the inner hole. The inner hole is a first cone shape, with the larger end of the first cone shape close to the first end of the main shaft.

3. The structure for convenient and quick replacement of roller skin in a crusher according to claim 2, characterized in that, The first roller is composed of multiple arc-shaped discs assembled together.

4. The structure for convenient and quick replacement of roller skin in a crusher according to claim 3, characterized in that, The first roller is composed of three arc-shaped discs assembled together.

5. The structure for convenient and quick replacement of roller skin in a crusher according to claim 1, characterized in that, The inner circular surface of the first roller is a fifth conical surface, and the outer circular surface of the positioning sleeve is a sixth conical surface, with the fifth and sixth conical surfaces being adapted to each other.

6. The structure for convenient and quick replacement of roller skin in a crusher according to claim 5, characterized in that, A top shaft is fixedly sleeved between the positioning sleeve and the second roller. The opposite ends of the positioning sleeve and the second roller abut against the two ends of the top shaft. The first guide groove on the inner wall of the positioning sleeve is adapted to the first guide key on the main shaft, and the second guide groove on the inner wall of the second roller is adapted to the second guide key on the main shaft.

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