Special tool for disassembling dual-purpose bearing for shaft hole

Abstract

The utility model relates to a special tool for disassembling a shaft hole dual-purpose bearing, and belongs to the field of manual tools. Three faces of the tool support are evenly provided with 120-degree-angle grooves, a jacking inner threaded hole is formed in the middle of the tool support, pin shaft holes are formed in the positions, where the grooves are formed, of the three faces of the tool support, the tool support is connected with a puller claw through the pin shafts, and a puller claw hook is arranged at the head of the puller claw. A jackscrew rod is arranged in the middle of the tool support and connected with the tool support through a jacking inner threaded hole, a jackscrew rod handle hole is formed in the top of the jackscrew rod, a handle is connected with the jackscrew rod through the jackscrew rod handle hole, and a supporting frame is installed in the middle of the jackscrew rod and connected with a supporting plate I; the supporting plate I and the supporting plate II are fixed through supporting plate adjusting holes in the supporting plate I and the supporting plate II and pin rods, a conical adjusting sleeve corresponding to the oblique angle of the puller claw is arranged in the middle of the puller claw, and an adjusting nut is installed at the round hole position of the jackscrew rod and the supporting frame and drives the jackscrew rod to move linearly.

Description

Technical Field

[0001] The utility model relates to the field of hand tools, in particular to a special tool for disassembling a shaft-hole bearing. Background Art

[0002] As we all know, in the field of mechanical design, rolling bearings are a type of transmission device widely used in the industrial and mechanical fields. Their transmission method reduces friction by rolling the rolling elements between the inner and outer rings to ensure that the mechanical parts of the equipment can operate accurately and smoothly. However, with the increase in service life and the current status of use in special environments, bearing rolling element wear, increased clearance affecting accuracy, high temperature, abnormal noise, jamming, and fatigue damage often occur, and they must be repaired and replaced. The traditional disassembly method relies on pulling or hammering and cutting to disassemble shaft bearings. Hole bearings are generally disassembled by hammering or welding and cutting, which poses certain safety risks and seriously affects the efficiency of maintenance work. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a special tool for disassembling a shaft-hole dual-purpose bearing, which eliminates the potential safety hazards during the disassembly of the shaft-hole bearing and solves the problem of disassembly and maintenance of the shaft-hole bearing.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a special tool for disassembling bearings for both shafts and holes, provided with a tool holder with three evenly grooved at an angle of 120 degrees, a tightening internal threaded hole in the middle of the tool holder, a pin hole in the grooved parts on the three sides of the tool holder, the tool holder is connected to the pulling claw by means of the pin, and a pulling claw hook is provided at the head of the pulling claw, and the utility model is characterized in that a top screw is provided in the middle of the tool holder and is connected to the tool holder through the tightening internal threaded hole, a top screw handle hole is provided on the top of the top screw, the handle is connected to the top screw through the top screw handle hole, a support frame is installed in the middle of the top screw, the support frame is connected to a support plate I, the support plate I and the support plate II are fixed by a pin rod through the support plate adjustment holes thereon, a conical adjustment sleeve corresponding to the oblique angle of the pulling claw is provided in the middle of the pulling claw, an adjusting nut is installed between the top screw and the circular hole of the support frame, and the adjusting nut drives the top screw to move linearly.

[0005] The beneficial effect of the utility model is that it can meet the needs of easily and quickly completing the disassembly of faulty hole and shaft bearings by replacing the accessories of the tool, eliminating the potential safety hazards in the disassembly process and improving the work efficiency of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0007] Figure 1The structural schematic diagram of the utility model is also a working schematic diagram of the disassembly process of the bore bearing.

[0008] Figure 2 The utility model is a schematic diagram of the disassembly process of the shaft bearing.

[0009] In the figure, 1. tool bracket, 2. tightening internal threaded hole, 3. pin shaft hole, 4. pin shaft, 5. pulling claw, 6. pulling claw hook, 7. jack screw, 8. jack screw handle hole, 9. handle, 10. support frame, 11. support frame round hole, 12. support frame fixing retaining ring, 13. support plate I, 14. support plate II, 15. support plate adjustment hole, 16. tapered adjustment sleeve, 17. adjustment nut, 18. bearing cover, 19. cover fixing hole, 20. bearing, 21. installation shaft. DETAILED DESCRIPTION

[0010] exist Figure 1 In the utility model, a tool holder 1 is provided with three sides of which grooves are evenly opened at an angle of 120°, a tightening internal thread hole 2 is provided in the middle of the tool holder 1, a pin hole 3 is provided in the grooved parts on the three sides of the tool holder 1, the tool holder 1 is connected to the pulling claw 5 by means of a pin 4, a pulling claw hook 6 is provided on the head of the pulling claw 5, which is convenient for fixing the inner and outer rings of the bearing for disassembly, a top screw 7 is provided in the middle of the tool holder 1, and is connected to the tool holder 1 through the tightening internal thread hole 2, a top screw handle hole 8 is provided on the top of the top screw 7, a handle 9 is connected to the top screw 7 through the top screw handle hole 8, a support frame 10 is installed in the middle of the top screw 7, the support frame 10 adopts a support frame circular hole 11 in the middle and a cylindrical structure design on both sides, and a support frame fixing is provided at the ends of the cylinders on both sides The retaining ring 12 is connected to the support plate I13 through the support frame 10. The support plate I13 and the support plate II14 are fixed by adjusting the height through the support plate adjustment hole 15 using different hole positions. A conical adjustment sleeve 16 corresponding to the bevel angle of the pulling claw 5 is provided in the middle of the pulling claw 5. The position of the pulling claw hook 6 is achieved by adjusting the matching position of the conical adjustment sleeve 16 and the bevel angle of the pulling claw 5. An adjusting nut 17 is added to the position of the top screw rod 7 and the circular hole 11 of the support frame. The top screw rod 7 is driven to move linearly by tightening the adjusting nut 17 to achieve the reverse movement of the puller and the support frame, thereby disassembling the bearing 20 in the bearing cover 18. The cover fixing hole 19 on the bearing cover 18 is connected to the equipment, thereby completing the disassembly process of the hole bearing. The three jaws of the three-jaw puller adopt an angled design, and a tapered adjustment sleeve is added between the three jaws. By adjusting the position of the tapered sleeve to match the angle of the three jaws, the puller claw hook and the inner ring of the bearing are locked, thereby realizing convenient disassembly of bearings of different inner diameters, eliminating safety hazards during the disassembly process, and improving maintenance work efficiency.

[0011] like Figure 2As shown, the shaft bearing is disassembled by reversing the direction of the pulling claw, disassembling the support frame 10 and the support plate assembly, and only retaining the tool bracket 1, the tightening internal threaded hole 2, the pin shaft hole 3, the pin shaft 4, the pulling claw 5, the pulling claw hook 6, the top screw 7, the top screw handle hole 8, and the handle 9. The pulling claw hook 6 is placed under the outer ring of the bearing 20, and the tip of the top screw 7 is pressed against the shaft end of the mounting shaft 21. The entire shaft bearing disassembly process is completed by tightening the top screw 7 and the reaction force of the pulling claw 5.

[0012] After the utility model is put into use, the specific operation scheme is to remove the screws in the gland fixing hole 19 on the bearing gland 18 to separate the bearing gland 18 from the equipment, take out the special tool, install the adjusting nut 17 and the support frame 10 between the top screw rod 7 using the round hole 11 of the support frame, connect the pulling claw 5 and the top screw rod 7 to the tool frame 1 using the pin 4 and the tightening internal thread 2, install the conical adjustment sleeve 16 at the bottom of the top screw rod 7, install the support plate Ⅰ13 at both ends of the support frame 10, and use the support frame fixing retaining ring 12 for extreme fixation, and the support plate Ⅰ 13 and support plate II 14 are adjusted and fixed through the support plate adjustment hole 15 according to the position height of the bearing 20 in the bearing gland 18, and the puller claw 5 is inserted into the bearing 20, and the conical adjustment sleeve 16 is adjusted to lock the puller claw hook 6 with the inner ring of the bearing 20. The top screw rod 7 and the adjustment nut 17 above the support frame 10 are rotated clockwise with a wrench. Under the reaction force of the support frame 10 and the support plate assembly, the top screw rod 7 drives the tool bracket 1 and the puller claw 5 to move upward linearly as a whole, so that the bearing 20 is separated from the bearing gland 18, and the disassembly process is completed. The safety hazards such as cutting and hammering in bearing disassembly are completely eliminated, and the standardization of bearing disassembly operations is truly realized. The essential safety and efficiency of maintenance work are improved.

Claims

1. A special tool for disassembling bearings for both shafts and holes, provided with a tool holder with three sides evenly slotted at an angle of 120°, a tightening internal thread hole in the middle of the tool holder, a pin hole in the slotted parts on the three sides of the tool holder, the tool holder is connected to the puller claw by the pin, and the head of the puller claw is provided with a puller claw hook, characterized in that: A top screw is provided in the middle of the tool bracket and is connected to the tool bracket through a tightening internal threaded hole. A top screw handle hole is provided on the top of the top screw, and the handle is connected to the top screw through the top screw handle hole. A support frame is installed in the middle of the top screw, and the support frame is connected to support plate I. Support plate I and support plate II are fixed by a distribution rod through the support plate adjustment holes thereon. A conical adjustment sleeve corresponding to the oblique angle of the pulling claw is provided in the middle of the pulling claw, and an adjusting nut is installed between the top screw and the circular hole of the support frame. The adjusting nut drives the top screw to move linearly.

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