Roller press bearing dismounting tool

Abstract

The utility model relates to a roller press bearing dismounting tool, which belongs to the technical field of bearing dismounting, and comprises a support, a connecting disc and an oil pump, at least three pull claws are uniformly distributed and hinged on the connecting disc, a fixed end of a first hydraulic jack is fixedly connected on the connecting disc on the same side of the pull claws, and the first hydraulic jack is connected with the oil pump. The oil pump comprises an oil cylinder, a first valve and a second valve are arranged on the oil cylinder, the first valve is connected with a first hydraulic jack, the second valve is connected with a hydraulic hole in the end face of a bearing position of a roller press spindle, the support is connected with the fixed end of a second hydraulic jack, and the lifting end of the second hydraulic jack is connected with a lifting block. And inclined iron is mounted on one side of the claw tip of the pull claw. The hydraulic jack is arranged to be matched with the pull claw, the oil pump conveys oil to the hydraulic hole for pressurization, and the jack is matched with the pull claw to disassemble the bearing, so that the disassembly process is simple, time and labor are saved, the bearing can be quickly and safely disassembled, and the bearing is not damaged due to protective disassembly.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing disassembly, in particular to a bearing disassembly tooling for a roller press. Background Technique

[0002] During the working process of a roller press, the bearing needs to bear great pressure and impact load. After long-term operation, wear, rust or adhesion may occur between the bearing and the shaft. The roller press bearing usually adopts a double-row cylindrical roller bearing, and the outer dimension of this bearing is large and the weight is heavy, making the operation during the disassembly process complicated and difficult.

[0003] At present, the disassembly of the roller press bearing usually adopts welding a fixing block on the bearing and then pulling it out. This method takes a long time, is time-consuming and laborious, has a high risk factor, and cannot completely remove the bearing. Therefore, a bearing disassembly tooling for a roller press is proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a bearing disassembly tooling for a roller press to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A bearing disassembly tooling for a roller press includes a bracket for supporting the roller press, a connection plate for connecting the roller press bearing, and an oil pump. The connection plate is evenly distributed with no less than three pulling claws hinged thereon. The fixed end of a first hydraulic jack is fixedly connected to the connection plate on the same side of the pulling claws. The first hydraulic jack is connected to the oil pump. The oil pump includes an oil cylinder, and a first valve and a second valve are arranged on the oil cylinder. The first valve is connected to the first hydraulic jack through a pipeline, and the second valve is connected to the hydraulic hole at the end face of the bearing position of the roller press main shaft through a pipeline. The fixed end of a second hydraulic jack is connected to the bracket, and the lifting end of the second hydraulic jack is connected with a lifting block. An inclined iron is installed on one side of the claw tip of the pulling claw.

[0007] Preferably, a rectangular through groove is opened on the inclined iron, a threaded hole is arranged on one side of the claw tip of the pulling claw, and the inclined iron is connected to the pulling claw through a bolt passing through the through groove and the threaded hole.

[0008] Preferably, the bracket is a drawer-type telescopic bracket, including a fixed frame and a telescopic frame. The telescopic frame is movably located inside the fixed frame, and the fixed end of the second hydraulic jack is arranged on the fixed frame.

[0009] Preferably, the oil pump is an electric oil pump, the oil cylinder is driven by a motor installed thereon, and the motor is electrically connected to the first valve and the second valve.

[0010] Preferably, an A port and a B port are provided on the first hydraulic jack, and the first valve is provided with two oil ports, and the two oil ports are respectively connected to the A port and the B port through pipelines.

[0011] Preferably, the second hydraulic jack is a hand-operated hydraulic jack.

[0012] Preferably, the second valve is provided with an oil port, and the oil port is connected to a hydraulic hole at the end face of the bearing position of the main shaft of the roller press through a pipeline.

[0013] Preferably, the lifting block is a rectangular block with an arc-shaped groove in the middle.

[0014] Preferably, the number of the pulling claws is three.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] In the present utility model, a hydraulic jack is arranged on the connecting plate to cooperate with the pulling claw, and an electric oil pump is respectively arranged to be connected to the hydraulic jack and the hydraulic hole at the end face of the bearing position of the roller press shaft. By feeding oil into the hydraulic hole, the inner sleeve of the bearing is pressurized and expanded, and the bearing is disassembled by the combined action of the hydraulic jack and the pulling claw. The disassembly process is simple, time-saving and labor-saving, the bearing can be quickly and safely disassembled, and the protective disassembly does not damage the bearing. Description of the Drawings

[0017] Figure 1 is a structural view of the present utility model;

[0018] Figure 2 is a structural view of the wedge iron of the present utility model;

[0019] Figure 3 is a schematic diagram of the structure and connection relationship in the embodiment of the present utility model;

[0020] Figure 4 is a schematic diagram of the pulling claw of the present utility model being clamped into the inner sleeve of the bearing in the embodiment;

[0021] Reference Signs

[0022] 1. Connecting plate, 2. Pulling claw, 3. First hydraulic jack, 4. Fixed end, 5. Oil pump, 6. Oil cylinder, 7. First valve, 8. Second valve, 9. Motor, 10. Pipeline, 11. Second hydraulic jack, 12. Lifting end, 13. Lifting block, 14. Bracket, 15. Wedge iron, 16. Through groove, 17. Screw hole, 18. Fixed frame, 19. Telescopic frame, 20. A port, 21. B port, 22. Oil circuit, 23. Hydraulic hole, 24. Roller, 25. Bearing. Detailed Embodiments

[0023] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features, and effects according to the present invention as follows.

[0024] As Figures 1-4 shown, a dismounting tooling for a roll press bearing includes a bracket 14 for supporting the roll press, a connecting plate 1 for connecting the roll press bearing, and an oil pump 5. Three pull claws 2 are evenly distributed and hinged on the connecting plate 1. A fixed end 4 of a first hydraulic jack 3 is fixedly connected to the connecting plate 1 on the same side of the pull claws 2. The first hydraulic jack 3 is connected to an electric oil pump 5. The electric oil pump 5 includes an oil cylinder 6 and a driving motor 9 on the oil cylinder 6. A first valve 7 and a second valve 8 are provided on the oil cylinder 6. The motor 9 is electrically connected to the first valve 7 and the second valve 8.

[0025] The first valve 7 is connected to the first hydraulic jack 3 through a pipeline 10. The first hydraulic jack 3 is provided with an A port 20 and a B port 21. The first valve 7 is provided with two oil ports, and the two oil ports are respectively connected to the A port 20 and the B port 21 through the pipeline 10. The second valve 8 is provided with one oil port, and the oil port is connected to a hydraulic hole 23 at the end face of the bearing position of the roll press main shaft.

[0026] The bracket 14 is a drawer-type telescopic bracket, including a fixed frame 18 and a telescopic frame 19. The telescopic frame 19 is movably located inside the fixed frame 18. The fixed end of a second hydraulic jack 11 is arranged on the fixed frame 18. The second hydraulic jack 11 is a hand-operated hydraulic jack. A lifting end 12 of the second hydraulic jack 11 is connected with a lifting block 13. The lifting block 13 is a rectangular block with an arc-shaped groove in the middle, and is used for lifting the roll 24 of the roll press.

[0027] An inclined iron 15 is installed on the tip side of the pull claw 2. A rectangular through groove 16 is formed in the inclined iron 15. A screw hole 17 is provided on the tip side of the pull claw 2. The inclined iron 15 is connected to the pull claw 2 through a bolt passing through the through groove 16 and the screw hole 17.

[0028] As Figures 3-4 shown, the working principle of this embodiment is as follows:

[0029] Place the roll press on the bracket 14. Since the roll press models are different, adjust the length of the bracket 14 according to the size of the roll press by pushing or pulling the telescopic frame 19 of the bracket 14; make the roll of the roll press located in the lifting block 13 on the second hydraulic jack 11, and manually press the second hydraulic jack 11 to make the lifting block 13 on the lifting end 12 of the second hydraulic jack 11 hold the roll 24 and lift it by a certain angle;

[0030] Evenly place the three pulling claws 2 into the gap of the bearing 25, so that the claw tips of the pulling claws 2 are stuck into the inner sleeve of the bearing 25. Then, insert the wedge iron 15 into the remaining gap between the pulling claws 2 and the outer ring of the bearing 25 and fill it tightly. Pass the bolt through the through slot 16 of the wedge iron 15 and the screw hole 17 of the pulling claw 2, and fix it through the cooperation of the bolt and the nut, so that the three pulling claws 2 tightly hook into the inner sleeve of the bearing 25;

[0031] An oil port of the second valve 8 is connected to the hydraulic hole 23 at the end face of the bearing position of the main shaft of the roller press. There is an oil passage 26 inside the main shaft. Pump high-pressure oil into the hydraulic hole 23 at the end face of the main shaft through the second valve 8 of the oil pump to expand the inner ring of the bearing 25;

[0032] Then, open the first valve 7 of the oil pump 5. The first hydraulic jack 3 connected to the first valve 7 starts to work. The lifting end 12 of the first hydraulic jack 3 abuts against the main shaft of the roller press. The pulling claws 2 are stuck into the inner sleeve of the bearing 25. Continuously pump high-pressure oil through the first valve 7 of the oil pump 5, and the lifting end 12 of the first hydraulic jack 3 keeps rising. Finally, the bearing 25 is pulled out from the main shaft of the roller press by the pulling claws 2.

[0033] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention has been disclosed as above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to it as equivalent embodiments within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A roller press bearing disassembly tool, characterized in that: It includes a bracket supporting a roller press, a connecting plate connected to the roller press bearing and an oil pump, the connecting plate is evenly distributed and hinged with no less than three pulling claws, the connecting plate on the same side of the pulling claw is fixedly connected to the fixed end of the first hydraulic jack, the first hydraulic jack is connected to the oil pump, the oil pump includes an oil cylinder, the oil cylinder is provided with a first valve and a second valve, the first valve is connected to the first hydraulic jack through a pipeline, the second valve is connected to the hydraulic hole on the end face of the bearing position of the roller press main shaft through a pipeline, the fixed end of the second hydraulic jack is connected to the bracket, the lifting end of the second hydraulic jack is connected to a lifting block, and an inclined iron is installed on one side of the claw tip of the pulling claw.

2. A roller press bearing disassembly tool according to claim 1, characterized in that: A rectangular through slot is provided on the inclined iron, a screw hole is provided on one side of the claw tip of the pulling claw, and the inclined iron is connected to the pulling claw by bolts passing through the through slot and the screw hole.

3. The roller press bearing disassembly tool according to claim 1, characterized in that: The bracket is a drawer-type retractable bracket, comprising a fixed frame and a retractable frame, the retractable frame is movably located in the fixed frame, and the fixed end of the second hydraulic jack is arranged on the fixed frame.

4. The roller press bearing disassembly tool according to claim 1, characterized in that: The oil pump is an electric oil pump, and a motor drive is installed on the oil cylinder. The motor is electrically connected to the first valve and the second valve.

5. The roller press bearing disassembly tool according to claim 1, characterized in that: The first hydraulic jack is provided with an A port and a B port, the first valve is provided with two oil ports, and the two oil ports are respectively connected with the A port and the B port through pipelines.

6. The roller press bearing disassembly tool according to claim 1, characterized in that: The second hydraulic jack is a hand-operated hydraulic jack.

7. The roller press bearing disassembly tool according to claim 1, characterized in that: The second valve is provided with an oil port, and the oil port is connected to a hydraulic hole on the end face of the bearing position of the main shaft of the roller press through a pipeline.

8. The roller press bearing disassembly tool according to claim 1, characterized in that: The lifting block is a rectangular block with an arc groove in the middle.

9. The roller press bearing disassembly tool according to claim 1, characterized in that: The number of the pulling claws is three.

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