Powder metallurgy gear assembly structure

Abstract

The utility model discloses a powder metallurgy gear assembly structure which comprises a left half tooth and a right half tooth, a shaft rod is connected in the left half tooth and the right half tooth, teeth are evenly installed on the outer side of the left half tooth and the outer side of the right half tooth, and clamping assemblies are arranged in the left half tooth and the right half tooth. Two fixing plates are arranged outside the two-way threaded rod in a threaded and sleeving mode, the end of the telescopic rod is fixedly connected with an abutting block, and a spring is arranged outside the telescopic rod in a sleeving mode. A bolt is separated from a right half tooth and a first threaded hole in a second arc-shaped frame, then a two-way threaded rod is rotated anticlockwise through a rotary knob, two fixing plates outside the two-way threaded rod move oppositely, and then a spring drives a telescopic rod to reset in the moving process; and therefore, the abutting block at the top of the telescopic rod is separated from the abutting groove, the right half tooth and the left half tooth can be detached from the outside of the shaft rod, and the right half tooth and the left half tooth can be detached and replaced conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear assembly structures, and particularly relates to a powder metallurgy gear assembly structure. Background Art

[0002] A powder metallurgy gear assembly structure refers to a gear manufactured by the powder metallurgy method. This method uses a metal powder or a mixture of metal powder and non-metal powder as raw materials, and manufactures metal materials, composite materials and various types of products through forming and sintering processes. A gear is a mechanical element with teeth on the rim that continuously mesh to transmit motion and power.

[0003] The existing gears are generally installed on the rotating shaft by interference fit after installation, which is not convenient for installation and disassembly, thus increasing the use cost. Therefore, an improvement is now made to a powder metallurgy gear assembly structure. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a powder metallurgy gear assembly structure. The disassembly and assembly of the left half tooth and the right half tooth can be quickly realized through a clamping component, and at the same time, a fixing component can further fix the half tooth and the right half tooth to solve the problems raised in the above background art.

[0005] To achieve the above object, the utility model proposes a powder metallurgy gear assembly structure, which includes a left half tooth and a right half tooth. A shaft rod is connected inside the left half tooth and the right half tooth. Tooth teeth are evenly installed on the outer sides of the left half tooth and the right half tooth. A clamping component is arranged inside the left half tooth and the right half tooth, and a fixing component is arranged on the tops of the left half tooth and the right half tooth;

[0006] The clamping component includes mounting grooves opened inside the left half tooth and the right half tooth. A bidirectional threaded rod is movably sleeved inside the mounting grooves. Two fixing plates are threadedly sleeved on the outer part of the bidirectional threaded rod. Telescopic rods are installed on opposite sides of the two fixing plates. A pressing block is fixedly connected to the end of the telescopic rod. A spring is sleeved on the outer part of the telescopic rod.

[0007] Preferably, the fixing component includes a second arc-shaped frame and a first arc-shaped frame fixedly installed on the tops of the left half tooth and the right half tooth. A first threaded hole is opened inside the second arc-shaped frame and the first arc-shaped frame. A bolt is threadedly sleeved inside the first threaded hole.

[0008] Preferably, a connecting groove is opened inside the shaft rod, and a pressing groove is opened inside the connecting groove. The pressing groove is fitted with the pressing block.

[0009] Preferably, a second threaded hole is opened inside the fixing plate. The fixing plate is in threaded cooperation with the bidirectional threaded rod.

[0010] Preferably, a limiting block is installed on the outer side of the fixing plate, a limiting groove is opened inside the installation groove, and the limiting block is slidably connected with the limiting groove.

[0011] Preferably, a knob is installed on the top of the bidirectional threaded rod.

[0012] The powder metallurgy gear assembly structure proposed by the present utility model can bring the following beneficial effects:

[0013] 1. By clockwise rotating the knob, the knob drives the bidirectional threaded rod to rotate. Then, during the rotation process, the two fixing plates outside the bidirectional threaded rod move in opposite directions. At this time, the telescopic rod and the spring on the fixing plate synchronously drive the abutting block to contact the abutting groove. During the contact process, since the abutting block fits and fixes with the abutting groove, the abutting block stops moving. Then, the fixing plate drives the telescopic rod and the spring to squeeze the inside of the abutting groove through the abutting block. Then, during the squeezing process, the abutting block is further fixed with the abutting groove.

[0014] 2. By separating the bolt from the right half tooth and the threaded hole 1 inside the second arc-shaped frame, and then counterclockwise rotating the bidirectional threaded rod by the knob, the two fixing plates outside the bidirectional threaded rod move towards each other. Then, during the moving process, the spring drives the telescopic rod to reset. Then, the abutting block at the top of the telescopic rod is separated from the abutting groove. Then, the right half tooth and the left half tooth can be disassembled from the outside of the shaft rod, so as to facilitate the disassembly and replacement of the right half tooth and the left half tooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0016] In the drawings:

[0017] Figure 1 is the overall structural schematic diagram of a powder metallurgy gear assembly structure of the present utility model.

[0018] Figure 2 is the internal sectional structural schematic diagram of a powder metallurgy gear assembly structure of the present utility model.

[0019] Figure 3 is a powder metallurgy gear assembly structure of the present utility model Figure 2 Schematic diagram of structure A.

[0020] Figure 4 is a powder metallurgy gear assembly structure of the present utility model Figure 1 Schematic diagram of the structure at B.

[0021] In the figure: 1. Right half tooth; 2. Left half tooth; 3. First arc-shaped frame; 4. Bolt; 5. First threaded hole; 6. Shaft rod; 7. Tightening groove; 8. Tightening block; 9. Limiting groove; 10. Telescopic rod; 11. Spring; 12. Limiting block; 13. Second threaded hole; 14. Installation groove; 15. Bidirectional threaded rod; 16. Fixed plate; 17. Knob; 18. Teeth; 19. Connection groove; 20. Second arc-shaped frame. Specific implementation manner

[0022] As Figure 1 and Figure 4 As shown in the figure, an embodiment of the present utility model provides a powder metallurgy gear assembly structure, including a left half tooth 2 and a right half tooth 1. A shaft rod 6 is connected inside the left half tooth 2 and the right half tooth 1. Teeth 18 are evenly installed on the outer sides of the left half tooth 2 and the right half tooth 1. Clamping components are provided inside the left half tooth 2 and the right half tooth 1, and fixing components are provided on the tops of the left half tooth 2 and the right half tooth 1;

[0023] The clamping component includes an installation groove 14 opened inside the left half tooth 2 and the right half tooth 1. A bidirectional threaded rod 15 is movably sleeved inside the installation groove 14. Two fixed plates 16 are threadedly sleeved on the outer part of the bidirectional threaded rod 15. Telescopic rods 10 are installed on the opposite sides of the two fixed plates 16. Tightening blocks 8 are fixedly connected to the ends of the telescopic rods 10. Springs 11 are sleeved on the outer parts of the telescopic rods 10. By moving the two fixed plates 16 on the outer part of the bidirectional threaded rod 15 towards each other, the springs 11 drive the telescopic rods 10 to reset during the movement process, so that the tightening blocks 8 at the tops of the telescopic rods 10 are separated from the tightening grooves 7, and thus the right half tooth 1 and the left half tooth 2 can be disassembled from the outer part of the shaft rod 6.

[0024] As Figure 1 and Figure 4 As shown in the figure, the fixing component includes a second arc-shaped frame 20 and a first arc-shaped frame 3 fixedly installed on the tops of the left half tooth 2 and the right half tooth 1. A first threaded hole 5 is opened inside the second arc-shaped frame 20 and the first arc-shaped frame 3. A bolt 4 is threadedly sleeved inside the first threaded hole 5. By the cooperation of the bolt 4 and the first threaded hole 5 inside the second arc-shaped frame 20 and the first arc-shaped frame 3, the right half tooth 1 and the left half tooth 2 are further fixed.

[0025] As Figure 2 and Figure 3As shown, a connection groove 19 is formed inside the shaft rod 6, and an abutting groove 7 is formed inside the connection groove 19. The abutting groove 7 fits with the abutting block 8. The two fixing plates 16 outside the bidirectional threaded rod 15 move in opposite directions. At this time, the telescopic rods 10 and springs 11 on the fixing plates 16 synchronously drive the abutting block 8 to contact the abutting groove 7. During the contact process, since the abutting block 8 fits and fixes with the abutting groove 7, the abutting block 8 is further fixed to the abutting groove 7. A second threaded hole 13 is formed inside the fixing plate 16, and the fixing plate 16 is in threaded cooperation with the bidirectional threaded rod 15. The bidirectional threaded rod 15 drives the two fixing plates 16 to move in opposite directions and move towards each other.

[0026] As Figure 3 shown, a limiting block 12 is installed on the outer side of the fixing plate 16, and a limiting groove 9 is formed inside the installation groove 14. The limiting block 12 is slidably connected with the limiting groove 9. When the bidirectional threaded rod 15 drives the two fixing plates 16 outside to move in opposite directions and move towards each other, the fixing plate 16 is slidably connected with the limiting groove 9 through the limiting block 12, thereby increasing the stability of the fixing plate 16 during movement. A knob 17 is installed on the top of the bidirectional threaded rod 15. By cooperating with the knob 17 through an external tool, it is convenient to install and disassemble the left half tooth 2 and the right half tooth 1.

[0027] Working principle:

[0028] When the utility model is installed, first, the abutting block 8 inside the right half tooth 1 and the left half tooth 2 is brought into contact with the connection groove 19 formed inside the shaft rod 6. At this time, the knob 17 is rotated clockwise, so that the knob 17 drives the bidirectional threaded rod 15 to rotate. Then, during the rotation process, the two fixing plates 16 outside the bidirectional threaded rod 15 move in opposite directions. At this time, the telescopic rods 10 and springs 11 on the fixing plates 16 synchronously drive the abutting block 8 to contact the abutting groove 7. During the contact process, since the abutting block 8 fits and fixes with the abutting groove 7, the abutting block 8 stops moving. Then, the fixing plate 16 drives the telescopic rod 10 and the spring 11 to squeeze the inside of the abutting groove 7 through the abutting block 8. During the squeezing process, the abutting block 8 is further fixed to the abutting groove 7. Then, by rotating the bolt 4 clockwise, the bolt 4 cooperates with the first threaded hole 5 inside the second arc-shaped frame 20 and the first arc-shaped frame 3, thereby further fixing the right half tooth 1 and the left half tooth 2. When disassembling, the bolt 4 is separated from the first threaded hole 5 inside the right half tooth 1 and the second arc-shaped frame 20. Then, the bidirectional threaded rod 15 is rotated counterclockwise through the knob 17, so that the two fixing plates 16 outside the bidirectional threaded rod 15 move towards each other. Then, during the movement process, the spring 11 drives the telescopic rod 10 to reset. Then, the abutting block 8 at the top of the telescopic rod 10 is separated from the abutting groove 7. Then, the right half tooth 1 and the left half tooth 2 can be disassembled from the outside of the shaft rod 6, so as to facilitate the disassembly and replacement of the right half tooth 1 and the left half tooth 2.

[0029] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple. For the relevant parts, reference can be made to the partial description of the method embodiment.

[0030] The above description is only for the embodiments of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A powder metallurgy gear assembly structure, comprising a left half tooth (2) and a right half tooth (1), characterized in that: The left half tooth (2) and the right half tooth (1) are internally connected with a shaft rod (6), and the outer sides of the left half tooth (2) and the right half tooth (1) are evenly installed with teeth (18). The left half tooth (2) and the right half tooth (1) are internally provided with a clamping component, and the tops of the left half tooth (2) and the right half tooth (1) are provided with a fixing component; The clamping assembly comprises a mounting groove (14) provided inside the left half tooth (2) and the right half tooth (1); a bidirectional threaded rod (15) is movably sleeved inside the mounting groove (14); two fixing plates (16) are sleeved externally on the bidirectional threaded rod (15); telescopic rods (10) are installed on opposite sides of the two fixing plates (16); a tightening block (8) is fixedly connected to the end of the telescopic rod (10); and a spring (11) is sleeved externally on the telescopic rod (10).

2. A powder metallurgy gear assembly structure according to claim 1, characterized in that: The fixing assembly comprises a second arc frame (20) and a first arc frame (3) fixedly mounted on the top of the left half tooth (2) and the right half tooth (1); a threaded hole (5) is provided inside the second arc frame (20) and the first arc frame (3); and a bolt (4) is provided in the internal thread sleeve of the threaded hole (5).

3. The powder metallurgy gear assembly structure according to claim 1, characterized in that: A connecting groove (19) is provided inside the shaft rod (6), a tightening groove (7) is provided inside the connecting groove (19), and the tightening groove (7) is fitted with the tightening block (8).

4. The powder metallurgy gear assembly structure according to claim 1, characterized in that: The fixing plate (16) is provided with a second threaded hole (13) inside, and the fixing plate (16) is threadably matched with the bidirectional threaded rod (15).

5. The powder metallurgy gear assembly structure according to claim 1, characterized in that: A limiting block (12) is installed on the outer side of the fixing plate (16), a limiting groove (9) is provided inside the installation groove (14), and the limiting block (12) is slidably connected to the limiting groove (9).

6. The powder metallurgy gear assembly structure according to claim 1, characterized in that: A knob (17) is installed on the top of the bidirectional threaded rod (15).

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