Elastic anti-backlash structure of worm gear and worm

Abstract

The utility model relates to the technical field of worm gears and worms, and discloses a worm gear and worm elastic anti-backlash structure which comprises a base, the upper surface of the right side of the base is fixedly connected with a pedestal, the upper surface of the pedestal is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with a transmission column. A rotating disc is fixedly connected to the outer wall of the left side of the transmission column, a fixing frame is rotatably connected to the outer wall of the right side of the transmission column, a first supporting column is fixedly connected to the lower surface of the fixing frame, push-pull rods are slidably connected to the interiors of the left side and the right side of the fixing frame, and a push plate is slidably connected to the upper surface of the right side of the base; and the outer wall of the left side of the push-pull rod is fixedly connected to the interior of a push plate. According to the backlash eliminating structure, the driving motor is started to drive the transmission column to rotate, then the transmission worm is driven to move towards the transmission worm gear, finally the purpose of shortening the distance between the transmission worm and the transmission worm gear in the backlash eliminating structure is achieved, and therefore the effect of eliminating the backlash between the transmission worm and the transmission worm gear is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of worm gears, and in particular to an elastic backlash-eliminating structure of a worm gear. Background Art

[0002] The worm gear structure is often used to transmit motion and power between two staggered axes. The worm wheel and worm are equivalent to the gear and rack in their middle plane, and the worm is similar in shape to the screw. Therefore, the worm wheel and worm mechanism is suitable for occasions where two axes are staggered, the transmission ratio is large, the transmission power is not large or intermittent work is carried out, and a worm gear anti-backlash structure is often required for use in conjunction.

[0003] The existing anti-backlash structure uses a preset design gap to compensate for the gap between the worm wheel and the worm, thereby improving the accuracy and efficiency of the transmission system. However, it is unable to correct the gap change between the worm wheel and the worm in real time, resulting in the problem that the backlash continues to increase due to wear of the worm wheel and the worm over a long period of time. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an elastic backlash elimination structure for a worm gear, aiming to improve the problem that the backlash continues to increase due to wear of the worm gear during long-term operation because the existing backlash elimination structure cannot correct the backlash change in real time.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The transmission gear of the present invention is a gear shifting device, and the transmission gear of the present invention is a gear shifting device, and the gear shifting device is a gear shifting device.

[0007] Preferably, the push-pull assembly comprises a spring, one end of the spring is arranged inside the left side of the push plate, and the other end of the spring is provided with a limiting block.

[0008] Preferably, a fixed block is fixedly connected to the left upper surface of the base, a second pillar is fixedly connected to the left upper surface of the base, and an outer wall of the limiting block is arranged inside the fixed block.

[0009] Preferably, the outer wall of the transmission worm is rotatably connected to the inside of the limit block, and the outer wall of the transmission worm wheel is meshingly connected to the outer wall of the transmission worm.

[0010] Preferably, the inner portion of the transmission worm wheel is rotatably connected to the upper outer wall of the second pillar, and a collar is fixedly connected to the middle outer wall of the second pillar.

[0011] Preferably, the outer wall of the collar is fixedly connected with a moisture-proof box, and the upper surface of the moisture-proof box is provided with a ventilation plate.

[0012] Preferably, the outer wall of the moisture-proof box is fixedly connected to the second fixing plate, the outer wall of the ventilation plate is fixedly connected to the first fixing plate, the outer wall of the second fixing plate is fixedly connected to a positioning block, the interior of the positioning block is fixedly connected to a rotating shaft, and the outer wall of the rotating shaft is rotatably connected to a handle.

[0013] Preferably, the outer wall of the handle is arranged on the outer wall of the second fixed plate, the outer wall of the handle is fixedly connected to the limiting rod, the outer wall of the limiting rod is fixedly connected to the inside of the limiting rod, and the outer wall of the limiting rod is arranged on the outer wall of the first fixed plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the driving motor is started to drive the transmission column to rotate inside the fixed frame, and then the limit block drives the transmission worm to move toward the transmission worm wheel, thereby finally achieving the purpose of shortening the distance between the transmission worm and the transmission worm wheel in the anti-backlash structure, thereby achieving the effect of eliminating the tooth gap between the transmission worm and the transmission worm wheel.

[0016] 2. In the utility model, by turning the handle to rotate and the ventilation plate detaching from the upper surface of the moisture-proof box, the maintenance personnel replace the moisture-proof agent in the moisture-proof box, and finally achieve the purpose of regularly replacing the moisture-proof agent inside the moisture-proof box, thereby achieving the effect of avoiding rusting of the transmission worm gear in the anti-clearance structure.

[0017] 3. In the utility model, the driving motor is started to drive the transmission column to rotate, and then the push plate is driven to slide, and finally the transmission worm is separated from the outer wall of the transmission worm wheel, so as to facilitate the maintenance personnel to quickly replace and maintain the transmission worm in the anti-backlash structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a worm gear elastic backlash elimination structure proposed by the utility model;

[0019] Figure 2 A schematic diagram of a fixing frame of a worm gear elastic anti-backlash structure proposed by the utility model;

[0020] Figure 3 A schematic diagram of a turntable of a worm gear elastic anti-backlash structure proposed by the utility model;

[0021] Figure 4 A schematic diagram of a moisture-proof box with a worm gear elastic anti-backlash structure proposed by the utility model;

[0022] Figure 5 The present invention is a schematic diagram of a limit rod of a worm gear elastic anti-backlash structure.

[0023] Legend:

[0024] 1. Base; 2. Pedestal; 3. Driving motor; 4. Transmission column; 5. Fixed frame; 6. Turntable; 7. Rotating block; 8. Push-pull rod; 9. First pillar; 10. Push plate; 11. Spring; 12. Limit block; 13. Transmission worm; 14. Fixed block; 15. Second pillar; 16. Transmission worm gear; 17. Ring; 18. Moisture-proof box; 19. Ventilation plate; 20. First fixed plate; 21. Second fixed plate; 22. Positioning block; 23. Rotating shaft; 24. Handle; 25. Limit rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings of the specification of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a worm gear elastic clearance elimination structure, including a base 1, a pedestal 2 is fixedly connected to the right upper surface of the base 1, a driving motor 3 is fixedly connected to the upper surface of the pedestal 2, a transmission column 4 is fixedly connected to the output end of the driving motor 3, a turntable 6 is fixedly connected to the left outer wall of the transmission column 4, a fixed frame 5 is rotatably connected to the right outer wall of the transmission column 4, a first pillar 9 is fixedly connected to the lower surface of the fixed frame 5, an outer wall of the first pillar 9 is fixedly connected to the inside of the base 1, a push-pull rod 8 is slidably connected to the left and right inner parts of the fixed frame 5, the right outer wall of the push-pull rod 8 is fixedly connected to the inside of the rotating block 7, the outer wall of the turntable 6 is arranged inside the rotating block 7, a push plate 10 is slidably connected to the right upper surface of the base 1, the left outer wall of the push-pull rod 8 is fixedly connected to the inside of the push plate 10, and a push-pull component is arranged inside the left side of the push plate 10, and the component is used to adjust the tooth gap between the transmission worm 13 and the transmission worm wheel 16;

[0027] Specifically, the driving motor 3 is started to drive the transmission column 4 to rotate, and then the turntable 6 rotates under the drive of the transmission column 4, and then the rotating block 7 swings left and right with the rotation of the turntable 6. At this time, the rotating block 7 drives the push-pull rod 8 to slide, and the push plate 10 slides under the drive of the push-pull rod 8.

[0028] Reference Figure 1 The push-pull assembly includes a spring 11, one end of the spring 11 is arranged inside the left side of the push plate 10, and the other end of the spring 11 is provided with a limit block 12;

[0029] Specifically, the push plate 10 squeezes the spring 11 to cause it to undergo elastic deformation, and the limit block 12 slides driven by the spring 11, and then the limit block 12 drives the transmission worm 13 to move, and finally achieves the purpose of shortening the distance between the transmission worm 13 and the transmission worm wheel 16 in the anti-backlash structure, thereby achieving the effect of eliminating the tooth gap between the transmission worm 13 and the transmission worm wheel 16; the drive motor 3 is started to drive the transmission column 4 to rotate, and at this time the push plate 10 pulls the spring 11 and drives the limit block 12 to slide, and then the limit block 12 is disengaged from the inside of the fixed block 14, and finally achieves the purpose of separating the transmission worm 13 from the transmission worm wheel 16, thereby achieving the effect of facilitating the maintenance personnel to quickly replace and maintain the transmission worm 13 in the anti-backlash structure.

[0030] Reference Figure 1 , Figure 4 and Figure 5 A fixing block 14 is fixedly connected to the upper left surface of the base 1, a second pillar 15 is fixedly connected to the upper left surface of the base 1, and the outer wall of the limit block 12 is arranged inside the fixing block 14; the outer wall of the transmission worm 13 is rotatably connected to the inside of the limit block 12, and the outer wall of the transmission worm wheel 16 is meshedly connected to the outer wall of the transmission worm 13; the inner part of the transmission worm wheel 16 is rotatably connected to the upper outer wall of the second pillar 15, and the middle outer wall of the second pillar 15 is fixedly connected to a collar 17; the outer wall of the collar 17 is fixedly connected to a moisture-proof box 18, and the upper surface of the moisture-proof box 18 is provided with The ventilation plate 19; the outer wall of the moisture-proof box 18 is fixedly connected with the second fixing plate 21, the outer wall of the ventilation plate 19 is fixedly connected with the first fixing plate 20, the outer wall of the second fixing plate 21 is fixedly connected with the positioning block 22, the interior of the positioning block 22 is fixedly connected with the rotating shaft 23, and the outer wall of the rotating shaft 23 is rotatably connected with the handle 24; the outer wall of the handle 24 is arranged on the outer wall of the second fixing plate 21, the outer wall of the handle 24 is fixedly connected with the limiting rod 25, the outer wall of the limiting rod 25 is fixedly connected to the interior of the limiting rod 25, and the outer wall of the limiting rod 25 is arranged on the outer wall of the first fixing plate 20;

[0031] Specifically, the handle 24 is moved to rotate, and the handle 24 then drives the limit rod 25 to rotate. At this time, the limit rod 25 is separated from the inside of the first fixed plate 20, and the ventilation plate 19 is removed from the upper surface of the moisture-proof box 18. The maintenance personnel replace the moisture-proof agent in the moisture-proof box 18, and finally achieve the purpose of replacing the moisture-proof agent in the moisture-proof box 18 on time, thereby preventing the transmission worm gear 16 from rusting.

[0032] Working principle: when the device needs to be used, first start the driving motor 3 to drive the transmission column 4 to rotate inside the fixed frame 5, and then the turntable 6 rotates around the transmission column 4 under the drive of the driving column 4, and then the rotating block 7 swings left and right with the rotation of the turntable 6, at this time, the rotating block 7 drives the push-pull rod 8 to slide inside the fixed frame 5, and the push plate 10 slides on the upper surface of the base 1 under the drive of the push-pull rod 8, and then the push plate 10 squeezes the spring 11 to make it elastically deformed, and the limit block 12 slides inside the fixed block 14 under the drive of the spring 11, and then the limit block 12 drives the transmission worm 13 to move toward the transmission worm wheel 16, and finally achieves the purpose of shortening the distance between the transmission worm 13 and the transmission worm wheel 16 in the gap elimination structure, thereby achieving the effect of eliminating the tooth gap between the transmission worm 13 and the transmission worm wheel 16; when the transmission worm 13 needs to be replaced and repaired, start the driving motor 3 to drive the transmission column 4 It rotates inside the fixed frame 5, thereby driving the push plate 10 to slide on the upper surface of the base 1. At this time, the push plate 10 pulls the spring 11 and drives the limit block 12 to slide inside the fixed block 14, and then the limit block 12 disengages from the inside of the fixed block 14, finally achieving the purpose of separating the transmission worm 13 from the outer wall of the transmission worm wheel 16, thereby facilitating the maintenance personnel to quickly replace and maintain the transmission worm 13 in the anti-gap structure; when it is necessary to replace the desiccant in the moisture-proof box 18, the handle 24 is turned to rotate the handle 24 around the rotating shaft 23, and the handle 24 then drives the limit rod 25 to rotate. At this time, the limit rod 25 disengages from the inside of the first fixed plate 20, and the ventilation plate 19 disengages from the upper surface of the moisture-proof box 18. The maintenance personnel replaces the desiccant in the moisture-proof box 18, and finally achieves the purpose of regularly replacing the desiccant inside the moisture-proof box 18, thereby preventing the transmission worm wheel 16 from rusting.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A worm gear elastic backlash elimination structure, comprising a base (1), characterized in that: The upper right surface of the base (1) is fixedly connected to a pedestal (2), the upper surface of the pedestal (2) is fixedly connected to a driving motor (3), the output end of the driving motor (3) is fixedly connected to a transmission column (4), the left outer wall of the transmission column (4) is fixedly connected to a turntable (6), the right outer wall of the transmission column (4) is rotatably connected to a fixing frame (5), the lower surface of the fixing frame (5) is fixedly connected to a first pillar (9), the outer wall of the first pillar (9) is fixedly connected to the inside of the base (1), and the fixing frame (5) is fixedly connected to the lower surface of the fixing frame (5). The left and right sides of the fixed frame (5) are slidably connected to push-pull rods (8), the right outer wall of the push-pull rods (8) is fixedly connected to the inside of the rotating block (7), the outer wall of the turntable (6) is arranged inside the rotating block (7), the right upper surface of the base (1) is slidably connected to a push plate (10), the left outer wall of the push-pull rods (8) is fixedly connected to the inside of the push plate (10), and a push-pull component is arranged inside the left side of the push plate (10), and the component is used to adjust the tooth gap between the transmission worm (13) and the transmission worm wheel (16).

2. The worm gear elastic backlash elimination structure according to claim 1, characterized in that: The push-pull assembly comprises a spring (11), one end of the spring (11) is arranged inside the left side of the push plate (10), and the other end of the spring (11) is provided with a limit block (12).

3. The worm gear elastic backlash elimination structure according to claim 2, characterized in that: A fixed block (14) is fixedly connected to the left upper surface of the base (1), a second support (15) is fixedly connected to the left upper surface of the base (1), and an outer wall of the limit block (12) is arranged inside the fixed block (14).

4. The worm gear elastic backlash elimination structure according to claim 3, characterized in that: The outer wall of the transmission worm (13) is rotatably connected to the inside of the limit block (12), and the outer wall of the transmission worm wheel (16) is meshingly connected to the outer wall of the transmission worm (13).

5. The worm gear elastic backlash elimination structure according to claim 4, characterized in that: The transmission worm wheel (16) is internally rotatably connected to the upper outer wall of the second support column (15), and a sleeve ring (17) is fixedly connected to the middle outer wall of the second support column (15).

6. The worm gear elastic backlash elimination structure according to claim 5, characterized in that: The outer wall of the sleeve ring (17) is fixedly connected to a moisture-proof box (18), and a ventilation plate (19) is provided on the upper surface of the moisture-proof box (18).

7. The worm gear elastic backlash elimination structure according to claim 6, characterized in that: The outer wall of the moisture-proof box (18) is fixedly connected to a second fixing plate (21), the outer wall of the ventilation plate (19) is fixedly connected to a first fixing plate (20), the outer wall of the second fixing plate (21) is fixedly connected to a positioning block (22), the interior of the positioning block (22) is fixedly connected to a rotating shaft (23), and the outer wall of the rotating shaft (23) is rotatably connected to a handle (24).

8. The worm gear elastic backlash elimination structure according to claim 7, characterized in that: The outer wall of the handle (24) is arranged on the outer wall of the second fixed plate (21), the outer wall of the handle (24) is fixedly connected to the limiting rod (25), the outer wall of the limiting rod (25) is fixedly connected to the inside of the limiting rod (25), and the outer wall of the limiting rod (25) is arranged on the outer wall of the first fixed plate (20).

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