Noise reduction type planetary reducer

Abstract

The utility model discloses a noise reduction type planetary reducer, and particularly relates to the technical field of planetary reducers, the noise reduction type planetary reducer comprises a reducer body, the reducer body is sleeved with a noise reduction cover, sound absorption cotton is arranged in an inner cavity of the noise reduction cover, one end of the noise reduction cover is fixedly connected with a limiting plate, and the other end of the noise reduction cover is fixedly connected with a motor. A bandage and a fixing frame are fixedly connected to one side of the bottom end of the noise reduction cover, a fastening bolt is inserted into the middle of the fixing frame, and a fixing cover is fixedly connected to the bottom of the noise reduction cover. According to the noise reduction device, the speed reducer body is sleeved with the noise reduction cover, noise generated in the speed reducer body can be absorbed and reduced through the sound absorption cotton, buffering is achieved through extrusion of the fixed cover on the buffering plate, deformation of the buffering plate and extrusion of the supporting block on the spring, and damping cooperation is achieved in combination with the damping rod; buffering and damping are achieved, so that noise caused by vibration is reduced, and the noise reduction effect is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to planetary reducer technical field more specifically, the utility model relates to a kind of noise reduction type planetary reducer. BACKGROUND

[0002] Planetary reducer is composed of inner tooth ring, tooth box shell, sun gear etc. The internal gear of planetary reducer is carburized and quenched with 20CrMnTi and ground, which has the characteristics of small size, light weight, high load capacity, long service life, stable operation, low noise, large output torque, large speed ratio, high efficiency and safe performance. The function of planetary reducer is to reduce the speed of the connected motor and output more torque, so it is widely used in various industries.

[0003] Due to the gear structure of planetary reducer and the influence of coaxiality with the motor, some degree of vibration will inevitably occur during operation. The rigid impact caused by vibration not only increases the wear of the internal structure of planetary reducer, but also produces a lot of noise, affecting the use experience of planetary reducer.

[0004] The Chinese patent with patent application number CN202323292698.2 discloses a shock-absorbing and noise-reducing large-torque planetary reducer, which includes a fixed bottom plate, two pairs of support vertical rods symmetrically installed on the top of the fixed bottom plate, a guide slide rod penetrating through the top of each support vertical rod, and a movable block fixedly connected to the bottom end of the guide slide rod near the middle of the fixed bottom plate. The utility model can effectively reduce the vibration amplitude and frequency of planetary reducer during operation, and reduce noise emission.

[0005] However, as shown in the drawings of the specification, the noise caused by the vibration of the reducer is reduced by the buffer mechanism. However, when the internal gear transmission effect of the reducer is poor, the gears will be unevenly stressed during meshing, causing impact and noise. Furthermore, as the use time increases, the gear wear intensifies, and the noise also increases. The shock-absorbing and buffering method can only reduce the noise caused by vibration, but cannot absorb and reduce the noise generated inside the motor. Moreover, the buffering and shock-absorbing are achieved only by the cooperation of spring and damper. The reduction of spring elasticity will affect the buffering effect. Therefore, a noise-reducing planetary reducer is proposed. SUMMARY

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a noise-reducing planetary reducer to solve the problems raised in the background art.

[0007] To achieve the above object, the utility model provides the following technical scheme: A kind of planetary reducer of noise reduction type, the outside of the reducer body is equipped with noise reduction cover, noise generated inside the reducer body is absorbed by noise reduction cover, improve the effect of noise reduction, the inner chamber of the noise reduction cover is provided with sound-absorbing cotton, the noise generated is absorbed by sound-absorbing cotton, one end of the noise reduction cover is fixedly connected with limiting plate, the bottom side of the noise reduction cover is fixedly connected with bandage and fixed frame, the middle part of the fixed frame is inserted with fastening bolt, the installation of noise reduction cover is limited by limiting plate, bandage is penetrated inside fixed frame, and fastening bolt is rotated to extrude and fix bandage, it is convenient to install and use;

[0008] The bottom of the noise reduction cover is fixedly connected with a fixed cover, the bottom of the fixed cover is provided with a mounting bottom plate, the top of the mounting bottom plate is fixedly connected with a positioning frame and a plurality of damping rods, the inner cavity of the fixed cover is fixedly connected with a fixed block on both sides, the bottom of the fixed block is fixedly connected with a buffer plate, the middle part of the buffer plate is sleeved with a binding hoop, the damping effect of the fixed cover can be damped by the damping rod, and the stability of the fixed cover vibration is improved by the mounting bottom plate and the positioning frame.

[0009] The two ends of the buffer plate are fixedly connected with support blocks, the top of the mounting bottom plate is provided with a limiting sliding groove, the middle part of the limiting sliding groove is fixedly connected with a stabilizing rod, the middle part of the stabilizing rod is sleeved with a spring, the extrusion of the buffer plate by the fixed cover can realize the effect of buffering and shock absorption, realize the effect of noise reduction, and the spring is extruded by the sliding of the support block in the limiting sliding groove, further play the role of buffering.

[0010] Preferably, the noise reduction cover is provided as an open-close structure by a hinge, the limiting plate is arranged on the side of the reducer body away from the output shaft, one end of the bandage penetrates the middle part of the fixed frame, and one end of the fastening bolt is attached to the wall of the bandage, to facilitate the installation and disassembly of the noise reduction cover and facilitate the use of the fixed cover.

[0011] Preferably, the positioning frame is located around the inner cavity of the fixed cover, and the top end of the damping rod is fixedly connected with the inner cavity wall of the fixed cover, to improve the stability of the fixed cover vibration by the positioning frame and the fixed cover.

[0012] Preferably, the support blocks correspond to the limiting sliding groove, and the support blocks are arranged in the middle part of the limiting groove, to improve the stability of the bottom end sliding of the buffer plate by the cooperation of the support blocks and the limiting sliding groove.

[0013] Preferably, the stabilizing rod penetrates the middle part of the support block, and the spring is arranged on the side of the support block away from the fixed block, to limit the support block by the stabilizing rod and extrude the support block by the spring, to buffer when the buffer plate is extruded and deformed.

[0014] Preferably, the buffer plate is arranged by combining a plurality of arc-shaped plates with different lengths, and the binding hoop is used for binding the plurality of arc-shaped plates with different lengths, thereby improving the buffering and noise reduction effect of the buffer plate on the fixing cover.

[0015] The technical effects and advantages of the present application are as follows:

[0016] 1. The noise reduction cover is sleeved outside the reducer body, can absorb and reduce the noise generated in the reducer body through the sound-absorbing cotton, and can realize buffering by extruding the buffer plate through the fixing cover, deforming the buffer plate, and extruding the spring through the support block, and can realize damping and buffering by combining the damping rod, thereby reducing the noise caused by vibration and further improving the noise reduction effect.

[0017] 2. The noise reduction cover is installed and fixed through the cooperation of the binding belt, the fixing frame, and the fastening bolt, and the stability of the fixing cover during vibration is improved through the cooperation of the positioning frame and the fixing cover, so that the inclination is avoided, the damping effect is improved, the buffering strength of the buffer plate is improved through the binding hoop, and the stability of the support block during movement is improved through the stability rod.

[0018] In summary, through the mutual influence of the above-mentioned multiple effects, the noise generated in the reducer body can be absorbed and reduced, the noise caused by vibration can be reduced through buffering and damping, the noise reduction effect is further improved, the buffer plate can be deformed for buffering, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0020] Figure 2 It is a schematic diagram of the structure of the noise reduction cover of the present application.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the present application.

[0022] Figure 4 It is a schematic diagram of the connection structure of the mounting bottom plate and the buffer plate of the present application.

[0023] Figure 5 It is a schematic diagram of the disassembly structure of the mounting bottom plate and the buffer plate of the present application.

[0024] The reference signs are as follows: 1, reducer body; 2, noise reduction cover; 3, sound-absorbing cotton; 4, limiting plate; 5, binding belt; 6, fixing cover; 7, mounting bottom plate; 8, positioning frame; 9, damping rod; 10, buffer plate; 11, fixing block; 12, support block; 13, limiting sliding groove; 14, stability rod; 15, spring; 16, binding hoop; 17, fixing frame; 18, fastening bolt. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] As shown in the accompanying Figures 1-5 The utility model discloses a noise reduction type planetary reducer, including the reducer body 1, the outside of reducer body 1 is equipped with the noise reduction cover 2, the noise reduction cover 2 is used for absorbing the noise generated in the reducer body 1, improves the noise reduction effect, the inner chamber of noise reduction cover 2 is provided with the sound absorption cotton 3, and the sound absorption cotton 3 is used for absorbing the noise, and one end of noise reduction cover 2 is fixedly connected with the limiting plate 4, one side of the bottom of noise reduction cover 2 is fixedly connected with the bandage 5 and fixed frame 17, the middle part of fixed frame 17 is inserted with the fastening bolt 18, the installation of noise reduction cover 2 is limited through the limiting plate 4, the inside of fixed frame 17 is penetrated through the bandage 5, and the bandage 5 is extruded and fixed through the rotation of fastening bolt 18, which is convenient to install and use.

[0027] The bottom of noise reduction cover 2 is fixedly connected with the fixed cover 6, the bottom of fixed cover 6 is provided with the installation bottom plate 7, the top of installation bottom plate 7 is fixedly connected with the positioning frame 8 and a plurality of damping rods 9, the inner chamber both sides of fixed cover 6 are fixedly connected with the fixed block 11, the bottom of fixed block 11 is fixedly connected with the buffer plate 10, the middle part of buffer plate 10 is equipped with the binding hoop 16, the both ends of buffer plate 10 are fixedly connected with the support block 12, the top of installation bottom plate 7 is provided with the limiting sliding slot 13, the middle part of limiting slot 13 is fixedly connected with the stabilizing rod 14, the middle part of stabilizing rod 14 is equipped with the spring 15, the damping effect of fixed cover 6 can be damped through the damping rod 9, the stability of fixed cover 6 vibration is improved through installation bottom plate 7 and positioning frame 8, the extrusion of buffer plate 10 through fixed cover 6 can realize the effect of buffering and damping, realize the effect of noise reduction, and the spring 15 is extruded through the sliding of support block 12 in the inside of limiting sliding slot 13, further plays the effect of buffering.

[0028] As shown in the accompanying Figures 1-5As shown, the noise reduction cover 2 is provided with a hinge structure, the limiting plate 4 is arranged on the side of the speed reducer body 1 away from the output shaft, one end of the binding band 5 penetrates the middle of the fixed frame 17, one end of the fastening bolt 18 is attached to the wall of the binding band 5, the positioning frame 8 is located around the inner cavity of the fixed cover 6, the top end of the damping rod 9 is fixedly connected with the inner cavity wall of the fixed cover 6, the supporting block 12 corresponds to the limiting sliding groove 13, the supporting block 12 is arranged in the middle of the limiting sliding groove 13, the stabilizing rod 14 penetrates the middle of the supporting block 12, the spring 15 is arranged on the side of the supporting block 12 away from the fixed block 11, the buffer plate 10 is composed of a plurality of arc-shaped plates with different lengths, the binding hoop 16 is used for binding the arc-shaped plates with different lengths, which facilitates the installation and disassembly of the noise reduction cover 2, facilitates the fixing and use, the positioning frame 8 and the fixed cover 6 improve the stability of the fixed cover 6 vibration, the cooperation of the supporting block 12 and the limiting sliding groove 13 improves the stability of the bottom end sliding of the buffer plate 10, the stabilizing rod 14 limits the supporting block 12, and the spring 15 extrudes the supporting block 12, so that the buffer plate 10 can be buffered when being extruded to deform, and the buffering and noise reduction effect of the buffer plate 10 on the fixed cover 6 is improved.

[0029] The utility model discloses working principle: when using, the noise reduction cover 2 is wrapped on the speed reducer body 1, and one end of the binding band 5 penetrates the middle of the fixed frame 17, and the binding band 5 is extruded by rotating the fastening bolt 18, which is convenient for wrapping and fixing the noise reduction cover 2 around the speed reducer body 1, and the noise generated in the inner cavity of the speed reducer body 1 is absorbed to realize the effect of reducing noise.

[0030] When the speed reducer body 1 vibrates, the buffer plate 10 and the damping rod 9 are extruded through the fixed cover 6, the effect of buffering and shock absorption is realized, the noise caused by vibration is reduced, and the effect of reducing noise is realized.

[0031] The above only for the preferred embodiment of the utility model has been only, and does not use for limiting the utility model, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model should be contained in the protection scope of the utility model.

Claims

1. A noise-reducing planetary speed reducer comprising a speed reducer body (1), characterized in that: The outer part of the speed reducer body (1) is sleeved with a noise reduction cover (2), the inner cavity of the noise reduction cover (2) is provided with sound-absorbing cotton (3), one end of the noise reduction cover (2) is fixedly connected with a limiting plate (4), one side of the bottom of the noise reduction cover (2) is fixedly connected with a binding band (5) and a fixed frame (17), and the middle part of the fixed frame (17) is inserted with a fastening bolt (18). The bottom of the noise reduction cover (2) is fixedly connected with a fixed cover (6), the bottom of the fixed cover (6) is provided with a mounting bottom plate (7), the top of the mounting bottom plate (7) is fixedly connected with a positioning frame (8) and a plurality of damping rods (9), the inner cavity of the fixed cover (6) is fixedly connected with fixed blocks (11) on both sides, the bottom of the fixed block (11) is fixedly connected with a buffer plate (10), and the middle part of the buffer plate (10) is sleeved with a binding hoop (16). Both ends of the buffer plate (10) are fixedly connected with supporting blocks (12), the top of the mounting bottom plate (7) is provided with a limiting sliding groove (13), the middle part of the limiting sliding groove (13) is fixedly connected with a stabilizing rod (14), and the middle part of the stabilizing rod (14) is sleeved with a spring (15).

2. The noise-reducing planetary speed reducer according to claim 1, characterized in that: The noise reduction cover (2) is provided with a hinge and is provided with an opening and closing structure, the limiting plate (4) is arranged on the side of the speed reducer body (1) away from the output shaft, one end of the binding band (5) penetrates through the middle part of the fixed frame (17), and one end of the fastening bolt (18) is attached to the wall of the binding band (5).

3. The noise-reducing planetary speed reducer of claim 1, wherein: The positioning frame (8) is located around the inner cavity of the fixed cover (6), and the top of the damping rod (9) is fixedly connected with the inner cavity wall of the fixed cover (6).

4. The noise reducing planetary speed reducer of claim 1, wherein: The supporting block (12) corresponds to the limiting sliding groove (13), and the supporting block (12) is arranged in the middle part of the limiting sliding groove (13).

5. The noise reducing planetary speed reducer of claim 1, wherein: The stabilizing rod (14) penetrates through the middle part of the supporting block (12), and the spring (15) is arranged on the side of the supporting block (12) away from the fixed block (11).

6. The noise reducing planetary speed reducer of claim 1, wherein: The buffer plate (10) is arranged as a plurality of arc-shaped plates with different lengths, and the binding hoop (16) is used for binding the plurality of arc-shaped plates with different lengths.

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