An arc-shaped bevel worm gear reducer device with clutch function

Abstract

This utility model discloses an arc-shaped bevel worm gear reducer device with a clutch function, including a housing, an input shaft, and an output shaft. An arc-shaped bevel worm gear is mounted on the input shaft, and a conical worm wheel is slidably connected to the outer wall of the output shaft, with the arc-shaped bevel worm gear and the conical worm wheel engaging with each other. A clutch mechanism that engages with the conical worm wheel is provided inside the housing. The arc-shaped bevel worm gear has good lubrication characteristics and tooth surface contact stress characteristics, which is beneficial for improving the transmission performance and service life of the bevel worm gear reducer. The arc-shaped bevel worm gear meshes with the conical worm wheel. A movable sliding key sleeve, under the action of a shift fork, drives the conical worm wheel to move axially along a fixed key on a fixed shaft, realizing the separation and engagement of the bevel worm gear, thereby interrupting and transmitting power. Three pin holes and limiting pins that engage with the pin holes are provided, allowing for insertion as needed to maintain the working state of the arc-shaped bevel worm gear reducer, thus fixing the state of the operating handle.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, specifically to an arc-shaped bevel worm gear reducer device that also has a clutch function. Background Technology

[0002] A bevel worm gear drive is typically a staggered-axis offset transmission device consisting of a bevel worm (composed of a bevel with evenly distributed equal-lead helices along the pitch cone) and a worm wheel. Its core characteristics include high overlap ratio, high single-stage reduction ratio, and compact structure. Traditional bevel worms (Archimedes bevel worms) have straight tooth profiles along their axial direction, with significant asymmetry between the two sides of the same tooth. This results in noticeable meshing asymmetry in the worm pair during actual operation, affecting the meshing smoothness and service life of the worm pair.

[0003] In a bevel worm gear drive, the bevel worm is offset to one side of the bevel worm wheel, making its engagement and disengagement along the axis of the bevel worm wheel easier. Reducers constructed from bevel worm gear drives offer a large single-stage reduction ratio and a compact structure. They have broad application prospects in low-speed, heavy-load, and high-reduction-ratio speed reduction applications. However, in existing mechanical transmission systems, the clutch mechanism is mostly an independent clutch, which is complex in structure and difficult to apply directly to the aforementioned working environments. Utility Model Content

[0004] The purpose of this invention is to provide an arc-shaped bevel worm gear reducer device that also has a clutch function, so as to solve the shortcomings of traditional reducers in terms of working stability, power control flexibility and maintenance convenience.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an arc-shaped bevel worm gear reducer device with clutch function, comprising a housing, an input shaft, and an output shaft. An arc-shaped bevel worm gear is provided on the input shaft, and a conical worm wheel is slidably connected to the outer wall of the output shaft, with the arc-shaped bevel worm gear and the conical worm wheel cooperating with each other. A clutch mechanism that cooperates with the conical worm wheel is provided inside the housing.

[0006] Preferably, it also includes a movable slide key sleeve, which is fixedly connected to the conical worm gear, and the outer wall of the output shaft is provided with a fixed key, which cooperates with the keyway inside the movable slide key sleeve.

[0007] Preferably, the clutch mechanism includes an integrally formed operating handle and a gear sector, the gear sector being rotatably connected to the housing via a rotating shaft; a shift fork is installed on the movable slide key sleeve, and the gear sector and the teeth on the shift fork are engaged.

[0008] Preferably, the housing includes a first reducer housing and a second reducer housing, and the first reducer housing and the second reducer housing are fixed together by fastening bolts.

[0009] Preferably, a second bearing and a third bearing are provided between the first reducer housing and the second reducer housing, and the output shaft is mounted on the second bearing and the third bearing.

[0010] Preferably, the first reducer housing is provided with a first bearing, and the input shaft is mounted on the first bearing.

[0011] Preferably, the housing is provided with a pin block, the pin block is provided with a first pin hole, the operating handle is provided with a second pin hole, and when the first limiting pin is inserted into the first pin hole and the second pin hole, the arc-shaped bevel worm and the bevel worm wheel mesh with each other.

[0012] Preferably, the pin block is provided with a third pin hole, and when the first limiting pin is inserted into the second pin hole and the third pin hole, the arc-shaped bevel worm and the bevel worm wheel are separated from each other.

[0013] Preferably, the output shaft is provided with a second limiting pin to limit the maximum range of motion of the movable slide key sleeve.

[0014] Preferably, a fork limiting block is installed inside the housing, and the fork is inserted into a slot opened in the fork limiting block.

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

[0016] By integrating the clutch and reducer functions into one unit, the structure is simple and easy to maintain. The arc-shaped bevel worm gear meshes with the bevel worm wheel. The movable sliding key sleeve can drive the bevel worm wheel to move axially along the fixed key on the fixed shaft under the action of the shift fork, realizing the separation and engagement of the bevel worm gear, thereby realizing the interruption and transmission of power.

[0017] At the same time, three pin holes are provided, as well as limit pins that cooperate with the pin holes. When it is necessary to maintain the state of the arc-shaped bevel worm gear reducer, they can be plugged in as needed to fix the state of the operating handle.

[0018] Curved bevel worm gears have good lubrication and tooth surface contact stress characteristics, which is beneficial for improving the transmission performance and service life of bevel worm gear reducers. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the arc-shaped bevel worm gear reducer device with clutch function of this utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of the arc-shaped bevel worm gear reducer device with clutch function of this utility model.

[0021] Figure 3 This is a schematic diagram of the internal structure of the arc-shaped bevel worm gear reducer device with clutch function of this utility model.

[0022] Figure 4 This is a schematic diagram of the arc-shaped bevel worm gear structure of this utility model.

[0023] Figure 5 This is a schematic diagram of the clutch function structure of this utility model.

[0024] 1. Input shaft; 2. Output shaft; 3. Operating handle; 4. First reducer housing; 5. Fastening bolt; 6. First limit pin; 7. Arc-shaped bevel worm gear; 8. Conical worm wheel; 9. First bearing; 10. End cover; 11. Moving slide key sleeve; 12. Second limit pin; 13. Shift fork; 14. Gear sector; 15. Second bearing; 16. Third bearing; 17. Shift fork limit block; 18. Rotating shaft; 19. Second reducer housing; 20. Fixing key; 21. Pin block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a technical solution: an arc-shaped bevel worm gear reducer device with clutch function, including a housing, an input shaft 1 and an output shaft 2. The input shaft 1 is provided with an arc-shaped bevel worm 7, and the outer wall of the output shaft 2 is slidably connected with a conical worm wheel 8, and the arc-shaped bevel worm 7 and the conical worm wheel 8 cooperate with each other.

[0027] The reducer uses an arc-shaped bevel worm gear 7 and its paired bevel worm wheel 8 as its main body, both with hardened tooth surfaces. The arc-shaped bevel worm gear 7 has a conical body and an arc-shaped tooth profile in the axial plane. The bevel worm wheel 8 is an arc-shaped bevel gear.

[0028] It also includes a movable slide key sleeve 11, which is fixedly connected to the conical worm gear 8. The outer wall of the output shaft 2 is provided with a fixing key 20, which engages with the keyway inside the movable slide key sleeve 11. This ensures that the movable slide key sleeve 11 and the conical worm gear 8 move in the vertical direction. At the same time, a shift fork limiting block 17 is installed inside the housing, and the shift fork 13 is inserted into the slot opened in the shift fork limiting block 17, further restricting the movement direction of the shift fork 13.

[0029] The output shaft 2 is also provided with a second limiting pin 12, which is used to limit the maximum range of motion of the movable slide key sleeve 11.

[0030] The housing contains a clutch mechanism that engages with the conical worm gear 8, used to engage or disengage the arc-shaped bevel worm 7 and the conical worm gear 8. The clutch mechanism includes an integrally formed operating handle 3 and a gear sector 14. The gear sector 14 is rotatably connected to the housing via a rotating shaft 18, and the operating handle 3 penetrates the housing. A shift fork 13 is mounted on the movable slide key sleeve 11, and the gear sector 14 engages with the teeth on the shift fork 13. By moving the operating handle 3, the gear sector 14 rotates, thereby causing the shift fork 13 to move up and down, which in turn moves the movable slide key sleeve 11.

[0031] The housing is provided with a pin block 21, which has a first pin hole. The operating handle 3 has a second pin hole. When a first limiting pin 6 is inserted into the first and second pin holes, the arc-shaped bevel worm 7 and the bevel worm wheel 8 mesh with each other. The pin block 21 is provided with a third pin hole. When the first limiting pin 6 is inserted into the second and third pin holes, the arc-shaped bevel worm 7 and the bevel worm wheel 8 separate from each other.

[0032] The housing includes a first reducer housing 4 and a second reducer housing 19, which are fixed together by fastening bolts 5. A second bearing 15 and a third bearing 16 are provided between the first reducer housing 4 and the second reducer housing 19, and the output shaft 2 is mounted on the second bearing 15 and the third bearing 16. A first bearing 9 is provided on the first reducer housing 4, and the input shaft 1 is mounted on the first bearing 9. An end cap 10 is provided at the opening of the housing, and the end cap 10 covers the outside of the first bearing 9, the second bearing 15, and the third bearing 16.

[0033] Working principle: When in operation, the position of the operating handle 3 is fixed by the first limit pin 6. The input shaft 1 is driven by the power unit and rotates around its own axis together with the arc-shaped bevel worm 7. The arc-shaped bevel worm 7 meshes with the bevel worm wheel 8, driving the bevel worm wheel 8 and the movable sliding key sleeve 11 to rotate around its own axis. The movable sliding key sleeve 11, through the cooperation of the keyway and the fixed key 20, drives the output shaft 2 to rotate around its own axis, realizing the deceleration output of the motion. The structure is simple, with few transmission parts, low energy loss, and high transmission efficiency.

[0034] When performing the separation action, firstly, remove the first limiting pin 6, and then rotate the operating handle 3 upwards (pointing towards the power output direction) around the rotating shaft 18, causing the gear sector 14 to rotate downwards. Based on the engagement of the gear sector 14 with the rack on the annular shift fork 13, the annular shift fork 13 moves downwards under the constraint of the limiting groove 17. Further, the shift fork 13 drives the movable sliding key sleeve 11 to move downwards along the fixed key 20 on the output shaft 2. Further, the movable sliding key sleeve 11 drives the conical worm gear 8 to move downwards, ultimately achieving the separation of the conical worm gear 8 and the arc-shaped bevel worm 7. After reaching the completely separated position limited by the second limiting pin 12, to maintain the separated state of the conical worm gear 8 and the arc-shaped bevel worm 7, the first limiting pin 6 can be inserted into the corresponding pin hole to fix the working position.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A curved bevel worm gear reducer device with clutch function, characterized in that: It includes a housing, an input shaft (1) and an output shaft (2). The input shaft (1) is provided with an arc-shaped bevel worm gear (7). The outer wall of the output shaft (2) is slidably connected with a conical worm wheel (8), and the arc-shaped bevel worm gear (7) and the conical worm wheel (8) cooperate with each other. The housing is provided with a clutch mechanism that cooperates with the conical worm gear (8).

2. The arc-shaped bevel worm gear reducer device with clutch function according to claim 1, characterized in that: It also includes a movable slide key sleeve (11), which is fixedly connected to the conical worm gear (8). The outer wall of the output shaft (2) is provided with a fixed key (20), and the fixed key (20) cooperates with the keyway inside the movable slide key sleeve (11).

3. The arc-shaped bevel worm gear reducer device with clutch function according to claim 2, characterized in that: The clutch mechanism includes an integrally formed operating handle (3) and a gear sector (14), the gear sector (14) being rotatably connected to the housing via a rotating shaft (18); The movable slide key sleeve (11) is equipped with a fork (13), and the toothed sector (14) engages with the toothed pattern on the fork (13).

4. The arc-shaped bevel worm gear reducer device with clutch function according to claim 1, characterized in that: The housing includes a first reducer housing (4) and a second reducer housing (19), which are fixed together by fastening bolts (5).

5. The arc-shaped bevel worm gear reducer device with clutch function according to claim 4, characterized in that: A second bearing (15) and a third bearing (16) are provided between the first reducer housing (4) and the second reducer housing (19), and the output shaft (2) is mounted on the second bearing (15) and the third bearing (16).

6. The arc-shaped bevel worm gear reducer device with clutch function according to claim 4, characterized in that: The first reducer housing (4) is provided with a first bearing (9), and the input shaft (1) is mounted on the first bearing (9).

7. The arc-shaped bevel worm gear reducer device with clutch function according to claim 3, characterized in that: The housing is provided with a pin block (21), the pin block (21) is provided with a first pin hole, the operating handle (3) is provided with a second pin hole, and when the first limiting pin (6) is inserted into the first pin hole and the second pin hole, the arc-shaped toothed bevel worm (7) and the bevel worm wheel (8) mesh with each other.

8. The arc-shaped bevel worm gear reducer device with clutch function according to claim 7, characterized in that: The pin block (21) is provided with a third pin hole, and when the first limiting pin (6) is inserted into the second pin hole and the third pin hole, the arc-shaped bevel worm (7) and the bevel worm wheel (8) are separated from each other.

9. The arc-shaped bevel worm gear reducer device with clutch function according to claim 2, characterized in that: The output shaft (2) is provided with a second limiting pin (12) to limit the maximum range of motion of the movable slide key sleeve (11).

10. The arc-shaped bevel worm gear reducer device with clutch function according to claim 3, characterized in that: The housing is equipped with a fork limiting block (17), and the fork (13) is inserted into the slot opened in the fork limiting block (17).

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