Transmission mechanism self-adaptive to gear tension

Abstract

The utility model relates to a transmission mechanism self-adaptive to gear tension, which comprises a rack (1) and a gear (2) which are meshed with each other, and is characterized by further comprising an elastic mechanism for elastically pressing the gear (2) on the rack (1), a central shaft of the gear (2) is rotationally arranged on the bottom plate (3); a sliding sleeve (4) is arranged on the bottom plate (3), and the sliding sleeve (4) is arranged on a sliding rail (5) perpendicular to the rack (1) in a sliding mode; the elastic mechanism is installed between the sliding sleeve (4) and the sliding rail (5) and pushes the sliding sleeve (4) to move leftwards towards the rack (1), so that the gear (2) keeps elastic pressure on the rack (1), and the meshing state between the gear (2) and the rack (1) is ensured. The device is simple in structure, tension between the gear and the rack can be automatically adjusted, the gear and the rack are always stably meshed, and long-distance stable operation can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of transmission mechanism of self-adapting gear tension, belong to mechanical transmission technical field. BACKGROUND

[0002] Gear rack transmission is the most widely used mechanical transmission in modern machinery, it can transmit motion and power between any two shafts. Gear rack transmission is suitable for large travel, high precision, large torque transmission, rack can be spliced, can run long distance under certain precision conditions. However, in the case of very long transmission distance, due to the length of the rack is very long, under the influence of rack splicing, installation error, deformation, thermal expansion and contraction and other factors, the rack is often not an ideal straight line, therefore, the gap between the rack and the gear exists too loose or too tight problem, leading to unstable tension between the rack and the gear, affecting the meshing state between the rack and the gear, resulting in transmission precision reduction, and serious tooth damage phenomenon, damage equipment.

[0003] Therefore, a simple structure is needed, which can automatically adjust the tension between the gear and the rack, so that the gear and the rack are always stably engaged. SUMMARY

[0004] The utility model aims at overcoming above-mentioned insufficient, provide a kind of transmission mechanism of self-adapting gear tension, simple structure, can automatically adjust the tension between the gear and the rack, so that the gear and the rack are always stably engaged, can long distance stable operation.

[0005] The utility model aims at overcoming above-mentioned insufficient, provide a kind of transmission mechanism of self-adapting gear tension, simple structure, can automatically adjust the tension between the gear and the rack, so that the gear and the rack are always stably engaged, can long distance stable operation.

[0006] A kind of transmission mechanism of self-adapting gear tension, include rack and gear that are engaged with each other, the elastic mechanism that gear is elastically pressed on rack;The central shaft of the gear is rotationally arranged on the bottom plate;Slide sleeve is arranged on the bottom plate, and slide sleeve is slidingly arranged on slide rail vertically arranged with rack;The elastic mechanism is installed between slide sleeve and slide rail, slide sleeve is pushed to left and close to rack, so that gear keeps elastic pressure to rack, ensure the meshing state between the two.

[0007] Further, the elastic mechanism includes adjusting nut rotatably arranged at the right end of the slide rail, spring seat sleeved on the slide rail and located at the left side of the adjusting nut, and compression spring sleeved on the slide rail and located between the slide sleeve and the spring seat;The compression spring pushes the slide sleeve to move left to form elastic pressure.

[0008] Further, a limiting nut is rotatably installed at the left end of the slide rail.

[0009] Further, the slide sleeve is a linear bearing, and the slide rail is slidingly embedded in the linear bearing.

[0010] Further, the bottom plate is provided with a driving motor, the driving motor drives the rotation of the central shaft of the gear, and drives the rotation of the gear.

[0011] Further, the gear is installed at the top end of the central shaft through the end cover and the bolt fastening.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model discloses a sliding sleeve is arranged on the bottom plate of installing the gear, makes the gear can reciprocate along the axial direction of slide rail, and sets up the elastic mechanism between the sliding sleeve and slide rail, makes the gear to the rack form elastic pressure, when encountering the distortion of rack, the gear can follow the deformation range of rack and adaptively translate, thereby ensuring that the gear and the rack are always in stable engagement state, and the overall structure is simple, can automatically adjust the tension between the gear and the rack, makes the gear and the rack always stable engagement, can long -distance stable operation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the structural diagram of adaptive gear tension transmission mechanism of the utility model.

[0015] Fig. 2 It is the right view of adaptive gear tension transmission mechanism of the utility model.

[0016] Among them:

[0017] Rack 1, gear 2, bottom plate 3, sliding sleeve 4, slide rail 5, adjusting nut 6, compression spring seat 7, compression spring 8, limit nut 9, driving motor 10, end cover 11. CONCRETE IMPLEMENTATION

[0018] Refer to Figs. 1-2 The utility model relates to a kind of adaptive gear tension transmission mechanism, containing mutually meshing rack 1 and gear 2, the elastic mechanism of gear 2 elastic pressure on rack 1, the central shaft rotation of gear 2 is set on bottom plate 3, sliding sleeve 4 is set on the bottom plate 3, sliding sleeve 4 is slidably arranged on slide rail 5 vertically arranged with rack 1,

[0019] Gear 2 is installed at the top end of the central shaft through end cover 11 and bolt fastening, bottom plate 3 is provided with driving motor 10, driving motor 10 drives the rotation of the central shaft of gear 2, drives the rotation of gear 2,

[0020] The elastic mechanism is installed between the sliding sleeve 4 and the slide rail 5, and comprises an adjusting nut 6 arranged on the right end of the slide rail 5, a compression spring seat 7 sleeved on the slide rail 5 and located on the left side of the adjusting nut 6, and a compression spring 8 sleeved on the slide rail 5 and located between the sliding sleeve 4 and the compression spring seat 7; the compression spring 8 pushes the sliding sleeve 4 to move leftwards, so that the gear 2 forms elastic pressure on the rack 1; the compression degree of the compression spring 8 can be adjusted through the adjusting nut 6, so that the elastic pressure of the compression spring 8 on the sliding sleeve 4 is adjusted, and the elastic pressure between the gear 2 and the rack 1 is changed, so that the engagement between the gear 2 and the rack 1 is kept in a stable state; when the rack 1 is distorted or twisted leftward or rightward, the gear 2 can always keep close to the rack 1 by the elastic pressure of the compression spring 8, so that effective engagement is ensured, and the purpose of automatically adjusting the tension of the gear 2 is achieved.

[0021] A limiting nut 9 is arranged on the left end of the slide rail 5, so that the bottom plate 3 and the sliding sleeve 4 are prevented from sliding off the left end of the slide rail 5 when the gear 2 is separated from the rack 1; in the embodiment, the sliding sleeve 4 is directly selected as a linear bearing, and the slide rail 5 is slidably arranged in the linear bearing.

[0022] The utility model discloses a sliding sleeve 4 is arranged on the bottom plate 3 provided with the gear 2, so that the gear 2 can reciprocate along the slide rail 5, and an elastic mechanism is arranged between the sliding sleeve 4 and the slide rail 5, and the elastic mechanism generates elastic pressure by the compression spring 8, so that the gear 2 forms elastic pressure on the rack 1; when the rack 1 is distorted, the gear 2 can adaptively translate with the distortion amplitude of the rack 1, and the tension of the gear 2 is automatically adjusted, so that the gear 2 and the rack 1 are always kept in a stable engagement state.

[0023] In addition, it should be noted that the above specific embodiments are only an optimized scheme of the patent, and any change or improvement made by the person skilled in the art according to the above concept is within the protection scope of the patent.

Claims

1. A self-adapting gear force increasing transmission mechanism, comprising a rack (1) and a gear (2) meshing with each other, characterized in that: It also comprises a spring mechanism for elastically pressing the gear (2) against the rack (1); the central shaft of the gear (2) is rotatably arranged on the bottom plate (3); the bottom plate (3) is provided with a sliding sleeve (4), which is slidingly arranged on a slide rail (5) arranged perpendicularly to the rack (1); the spring mechanism is installed between the sliding sleeve (4) and the slide rail (5), and pushes the sliding sleeve (4) to the left to approach the rack (1), so that the gear (2) keeps an elastic pressure against the rack (1) and ensures the engagement between them.

2. A self-adapting gear force building transmission mechanism according to claim 1, characterized in that: The spring mechanism comprises an adjusting nut (6) rotatably arranged at the right end of the slide rail (5), a compression spring seat (7) sleeved on the slide rail (5) and located to the left of the adjusting nut (6), and a compression spring (8) sleeved on the slide rail (5) and located between the sliding sleeve (4) and the compression spring seat (7); the compression spring (8) pushes the sliding sleeve (4) to move to the left to form an elastic pressure.

3. The self-adapting gear force gearing mechanism according to claim 1, wherein: A limit nut (9) is rotatably arranged at the left end of the slide rail (5).

4. The self-adapting gear force gearing mechanism of claim 1, wherein: The sliding sleeve (4) is a linear bearing, and the slide rail (5) is slidingly embedded in the linear bearing.

5. The self-adapting gear force gearing mechanism of claim 1, wherein: The bottom plate (3) is provided with a driving motor (10), which drives the central shaft of the gear (2) to rotate and drives the gear (2) to rotate.

6. The self-adapting gear force gearing mechanism of claim 1, wherein: The gear (2) is tightly installed at the top end of the central shaft through an end cover (11) and bolts.

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