Power take-off gear box

Abstract

The utility model provides a power take-off gear box, and belongs to a power take-off gear box. The power take-off gear box solves the problem that a worm gear of an existing gear box is difficult to disassemble and assemble and comprises a shell composed of a box cover and a box body, the worm gear and a worm which are meshed with each other are arranged in the box body, an output wheel shaft is arranged on the worm gear, and a worm gear assembly A and a worm gear assembly B which are symmetrically arranged are arranged on the worm gear. The worm gear assembly A and the worm gear assembly B are respectively provided with a clamping portion and a clamping cavity which are clamped and meshed with each other, the clamping portions are provided with through and communicated connecting holes, and connecting bolts are arranged in the connecting holes.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission devices and relates to a gear box, in particular to a power take-off gear box. Background Art

[0002] The power take-off gearbox, also known as a power take-off, is an important mechanical transmission device, widely used in agricultural machinery, construction machinery, automobiles and other fields.

[0003] Worm gear transmission is often used for internal transmission of gearboxes. It has the advantages of high transmission ratio, strong load-bearing capacity, self-locking, and smooth operation. However, the worm gear will produce greater wear during operation, resulting in worm gear loss. The worn worm gear will produce more friction and energy loss during the transmission process, resulting in a decrease in transmission efficiency. This may increase the energy consumption of the equipment and reduce the overall energy utilization efficiency. Summary of the invention

[0004] The purpose of the utility model is to provide a power take-off gear box which is easy to assemble and disassemble in view of the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a power take-off gear box, characterized in that it includes a shell composed of a box cover and a box body, the box body is provided with a worm wheel and a worm that mesh with each other, the worm wheel is provided with an output wheel shaft, and the worm wheel is provided with a symmetrically arranged worm wheel assembly A and a worm wheel assembly B, the worm wheel assembly A and the worm wheel assembly B are both provided with a clamping part and a clamping cavity that mesh with each other, the clamping part is provided with a connecting hole that penetrates and connects, and a connecting bolt is provided in the connecting hole.

[0006] In the above-mentioned power take-off gear box, the output wheel shaft is provided with an output gear shaft, the output wheel shaft is evenly distributed with a plurality of clamping nail grooves, and the inner wall of the worm wheel is provided with a plurality of connecting nails.

[0007] In the above-mentioned power take-off gear box, a plurality of fixing bolts are arranged on the box cover, and an observation window is opened on the box cover.

[0008] In the above-mentioned power take-off gearbox, an oil filling bolt and an oil drain bolt are provided on the box body.

[0009] In the above-mentioned power take-off gearbox, the box cover and the box body are both provided with a wheel axle positioning cavity.

[0010] Compared with the prior art, the power take-off gear box splits the worm wheel into two symmetrical parts, which are interlocked and connected with the snap-fitting portion and the snap-fitting cavity and fixed with bolts, so that the worm wheel can be quickly disassembled, assembled and replaced, thereby preventing power loss caused by excessive wear of the worm wheel. The worm wheel can be replaced by removing the box cover, and disassembly and assembly are easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the power take-off gearbox.

[0012] Figure 2 It is a structural schematic diagram of the power take-off gearbox housing.

[0013] Figure 3 It is a structural schematic diagram of the worm gear of the power take-off gearbox.

[0014] Figure 4 It is a structural schematic diagram of the worm gear of the power take-off gearbox.

[0015] In the figure, 1. box cover; 2. shell; 3. output wheel shaft; 4. box body; 5. observation window; 6. fixing bolt; 7. wheel shaft positioning cavity; 8. oil drain bolt; 9. oil filling bolt; 10. worm gear; 11. output gear shaft; 12. worm; 13. connecting pin; 14. worm gear assembly A; 15. connecting hole; 16. connecting bolt; 17. worm gear assembly B; 18. clamping cavity; 19. clamping part; 20. clamping pin groove. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0017] like Figure 1 , 2 As shown in Figures 3 and 4, the power take-off gearbox includes a housing 2 consisting of a box cover 1 and a box body 4. A worm wheel 10 and a worm 12 that mesh with each other are arranged in the box body 4. An output wheel shaft 3 is arranged on the worm wheel 10, and a worm wheel assembly A14 and a worm wheel assembly B17 that are symmetrically arranged are arranged on the worm wheel 10. The worm wheel assembly A14 and the worm wheel assembly B17 are both provided with a clamping portion 19 and a clamping cavity 18 that mesh with each other. A penetrating and interconnecting connecting hole 15 is opened on the clamping portion 19, and a connecting bolt 16 is arranged in the connecting hole 15. When installing, the box cover 1 can be opened to disassemble and assemble the worm wheel 10. The clamping portion 19 and the clamping cavity 18 mesh with each other and are then fixed by the connecting bolt 16. The multi-layer structure increases the friction force to ensure the stability of the connection.

[0018] Preferably, an output gear shaft 11 is provided on the output wheel shaft 3, and a plurality of snap-in nail grooves 20 are evenly distributed on the output wheel shaft 3. A plurality of connecting nails 13 are provided on the inner wall of the worm wheel 10, and the connecting nails 13 are embedded in the snap-in nail grooves 20 to increase the connection strength of the worm wheel assembly and enable it to have a larger load-bearing capacity.

[0019] Preferably, a plurality of fixing bolts 6 are provided on the box cover 1 , and an observation window 5 is opened on the box cover 1 .

[0020] Preferably, an oil filling bolt 9 and an oil drain bolt 8 are provided on the box body 4 .

[0021] Preferably, both the box cover 1 and the box body 4 are provided with a wheel axle positioning cavity 7 .

[0022] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0023] Although this article uses more terms such as box cover 1, housing 2, output wheel shaft 3, box body 4, observation window 5, fixing bolt 6, wheel shaft positioning cavity 7, oil drain bolt 8, oil filling bolt 9, worm wheel 10, output gear shaft 11, worm 12, connecting nail 13, worm wheel assembly A14, connecting hole 15, connecting bolt 16, worm wheel assembly B17, clamping cavity 18, clamping part 19, clamping nail groove 20, etc., it does not exclude the possibility of using other terms. The use of these terms is only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A power take-off gearbox, characterized in that: The invention comprises a housing (2) consisting of a housing (1) and a housing (4); a worm wheel (10) and a worm (12) interlocking with each other are arranged in the housing (4); an output wheel shaft (3) is arranged on the worm wheel (10); and a worm wheel assembly A and a worm wheel assembly B (17) are symmetrically arranged on the worm wheel (10); the worm wheel assembly A and the worm wheel assembly B (17) are both provided with a clamping portion (19) and a clamping cavity (18) interlocking with each other; the clamping portion (19) is provided with a connecting hole (15) penetrating and communicating with each other; and a connecting bolt (16) is arranged in the connecting hole (15).

2. A power take-off gearbox according to claim 1, characterized in that: The output wheel shaft (3) is provided with an output gear shaft (11), the output wheel shaft (3) is evenly distributed with a plurality of clamping nail grooves (20), and the inner wall of the worm wheel (10) is provided with a plurality of connecting nails (13).

3. A power take-off gearbox according to claim 1, characterized in that: The box cover (1) is provided with a plurality of fixing bolts (6), and the box cover (1) is provided with an observation window (5).

4. A power take-off gearbox according to claim 1, characterized in that: The box body (4) is provided with an oil filling bolt (9) and an oil drain bolt (8).

5. A power take-off gearbox according to claim 1, characterized in that: The box cover (1) and the box body (4) are both provided with a wheel axle positioning cavity (7).

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