Damping mechanism of speed reducer

Abstract

The damping mechanism of the speed reducer comprises a speed reducer body, a damping assembly is arranged at the bottom of a bottom supporting plate, limiting assemblies are symmetrically arranged on the front side and the rear side of the speed reducer body, and a part of vibration transmitted by the bottom supporting plate can be dissipated by bonding a top damping fin; a damping shock absorber can isolate and buffer most of vibration transmitted by a top damping fin, and finally, a shock isolation pad can prevent resonance noise from being generated between the mounting base plate and the outside ground, so that most of vibration and resonance noise of the speed reducer body are reduced, and pressing and fixing nuts are fixedly mounted on the upper sides of the annular side faces of the limiting vertical rods; the pressing and fixing nut is arranged on the second lower pressing sleeve, so that the pressing and fixing nut blocks the second lower pressing sleeve and the first lower pressing sleeve by extruding the gasket, then the first lower pressing sleeve blocks the bottom supporting plate, the speed reducer body is prevented from deviating or jumping upwards in the using process, and the working stability of the speed reducer body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a damping mechanism of a reducer. Background Art

[0002] The reducer is an independent component consisting of a gear drive, worm drive, or gear-worm drive enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine. It plays the role of matching speed and transmitting torque between the prime mover and the working machine or actuator, and is widely used in modern machinery.

[0003] The publication number "CN213981919U" provides a reducer base, which is arranged on a lifting and adjusting mechanism through a fixed plate. When the reducer needs to be adjusted in height, the reducer can be adjusted quickly, which greatly improves the convenience of installing the reducer.

[0004] However, the above technical solutions and the prior art have the following defects:

[0005] First of all, the reducer base is not equipped with a corresponding damping and shock-absorbing structure to suppress the vibration generated during operation, resulting in a certain vibration and resonance noise generated by the reducer during operation. Long-term resonance will affect the service life of the reducer. Although the damping and shock-absorbing base for the reducer in the prior art can suppress resonance, it does not have a corresponding limiting structure, which causes the reducer to easily jump and shake upward to a certain extent during operation, and the stability of use needs to be improved. Utility Model Content

[0006] The purpose of the utility model is to provide a damping mechanism for a reducer to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A damping mechanism of a reducer comprises a reducer body and a bottom support plate, wherein a bottom support plate is arranged at the bottom of the reducer body, a damping assembly is arranged at the bottom of the bottom support plate, and the damping assembly is used to isolate and reduce noise of the reducer body during operation, and limit assemblies are symmetrically arranged on the front and rear sides of the reducer body, and the limit assemblies are used to limit and press the bottom support plate to prevent the reducer body from shaking or jumping upward during operation.

[0009] Preferably, the damping assembly includes a top damping plate, a damping shock absorber and a mounting substrate, the top damping plate is symmetrically bonded to the left and right sides of the lower end surface of the bottom support plate, the damping shock absorber is installed on the lower end surface of the top damping plate, and the mounting substrate is installed at the bottom of the damping shock absorber.

[0010] Preferably, the limiting assembly includes a limiting vertical rod, a first lower pressure sleeve, a second lower pressure sleeve, a locking nut and an extrusion washer. The limiting vertical rods are symmetrically installed on the front and rear sides inside the bottom support plate. The first lower pressure sleeve is installed on the upper side of the annular side surface of the limiting vertical rod, the second lower pressure sleeve is installed on the upper end surface of the first lower pressure sleeve, the extrusion washer is installed on the upper end surface of the second lower pressure sleeve, and the locking nut is installed on the upper side of the annular side surface of the limiting vertical rod.

[0011] Preferably, a first inner sleeve is arranged inside the first lower pressure sleeve, and the material of the first inner sleeve is wear-resistant rubber; a second inner sleeve is arranged inside the second lower pressure sleeve, and the material of the second inner sleeve is wear-resistant rubber; the first inner sleeve and the second inner sleeve are both matched with the limiting vertical rod.

[0012] Preferably, a reinforcing plate is fixedly connected to the lower side of the annular side surface of the limiting vertical rod, and an external thread is provided on the upper side of the annular side surface of the limiting vertical rod, and the external thread is engaged with a locking nut.

[0013] Preferably, a seismic isolation pad is provided on the lower end surface of the mounting substrate, a plurality of through holes are opened inside the seismic isolation pad, the seismic isolation pad is made of polyurethane rubber, and the top damping plate is made of a damping pad.

[0014] Preferably, the first lower pressing sleeve is made of butyl rubber, the second lower pressing sleeve is made of polyurethane rubber, and the locking nut is made of a locking nut.

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

[0016] 1. By bonding the top damping sheet, part of the vibration transmitted from the bottom support plate will be dissipated, and the damping shock absorber will isolate and buffer most of the vibration transmitted through the top damping sheet. Finally, the isolation pad can avoid the resonance noise between the installation base plate and the external ground, thereby reducing most of the vibration and resonance noise of the reducer body, and avoiding long-term resonance affecting the service life of the reducer;

[0017] 2. By installing and fixing the locking nut on the upper side of the annular side of the limiting vertical rod, the locking nut can block and limit the second lower pressing sleeve and the first lower pressing sleeve through the extrusion washer, and then the first lower pressing sleeve blocks and limits the bottom support plate, thereby avoiding the reducer body from being offset or jumping upward during use, and the first lower pressing sleeve and the second lower pressing sleeve can buffer and dissipate most of the vibrations transmitted from the bottom support plate, avoiding the resonance noise of the extrusion washer during use, thereby ensuring the working stability of the reducer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 for Figure 1 A partial enlarged view of

[0020] Figure 3 It is a front cross-sectional view of the damping component and the limiting component in the utility model;

[0021] Figure 4 It is a structural diagram of the damping component and the limiting component in the utility model;

[0022] Figure 5 It is a dispersed structural diagram (explosion diagram) of the limit assembly in the utility model.

[0023] In the figure: 1. reducer body; 2. bottom support plate; 3. damping assembly; 31. top damping plate; 32. damping shock absorber; 33. mounting base plate; 34. seismic isolation pad; 35. through hole; 4. limit assembly; 41. limit vertical rod; 42. first lower pressure sleeve; 421. first inner sleeve; 43. second lower pressure sleeve; 431. second inner sleeve; 44. locking nut; 45. extrusion washer; 46. reinforcing plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments 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 in 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.

[0025] See also Figure 1-5 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A damping mechanism of a reducer includes a reducer body 1 and a bottom support plate 2. The bottom support plate 2 is arranged at the bottom of the reducer body 1. The bottom support plate 2 and the bottom of the reducer body 1 are an integrated structure. The bottom support plate 2 can support the reducer body 1. The transmission part of the reducer body 1 is connected to an external motor and a driven structure through an external flexible coupling. The external flexible coupling enables the connection of the transmission part of the reducer body 1 to have a certain axial displacement capacity, so that the reducer body 1 can perform a certain amplitude of up and down displacement.

[0028] A damping component 3 is provided at the bottom of the support plate, and the damping component 3 is used to isolate and reduce noise of the reducer body 1 during operation. Limiting components 4 are symmetrically provided on the front and rear sides of the reducer body 1, and the limiting components 4 are used to limit and press the bottom support plate 2 to prevent the reducer body 1 from shaking or jumping upward during operation.

[0029] The damping assembly 3 includes a top damping sheet 31, a damping shock absorber 32 and a mounting base plate 33. The top damping sheets 31 are symmetrically bonded to the left and right sides of the lower end surface of the bottom support plate 2. There are four groups of top damping sheets 31 bonded, and the specifications of the four groups of top damping sheets 31 are the same. The top damping sheets 31 are made of damping pads. The four groups of top damping sheets 31 made of damping pads can dissipate a part of the vibration energy transmitted from the bottom support plate 2, so as to achieve the purpose of vibration reduction. The damping shock absorber 32 is installed on the lower end surface of the top damping sheet 31. There are four groups of damping shock absorbers 32 installed, and the specifications of the four groups of damping shock absorbers 32 are the same. The four groups of damping shock absorbers 32 have the characteristics of composite vibration isolation and noise reduction, low natural frequency, and good vibration isolation effect, so as to isolate the resonance generated by most of the reducer body 1 when working. Due to the detailed internal structure of the damping shock absorber 32 The structure and working principle are relatively mature technologies in the existing technology, so they will not be elaborated here. A mounting base 33 is installed at the bottom of the damping shock absorber 32. The mounting base 33 can support four groups of damping shock absorbers 32. Mounting through holes are symmetrically opened on the left and right sides of the mounting base 33. The mounting through holes are convenient for installers to install and fix the mounting base 33 with the help of external expansion bolts. An isolation pad 34 is arranged on the lower end surface of the mounting base 33. The isolation pad 34 is made of polyurethane rubber. The isolation pad 34 made of polyurethane rubber has good wear resistance and buffering and shock absorbing properties, which can avoid resonance noise between the mounting base 33 and the external ground. A plurality of through holes 35 are opened inside the isolation pad 34. The plurality of through holes 35 make the isolation pad 34 more flexible, thereby further improving the buffering and shock-absorbing ability of the isolation pad 34.

[0030] Embodiment 2:

[0031] On the basis of Example 1, in this embodiment, the locking nut 44 is installed and fixed on the upper side of the annular side of the limiting vertical rod 41, so that the locking nut 44 can block and limit the second lower pressing sleeve 43 and the first lower pressing sleeve 42 through the squeezing washer 45, and then the first lower pressing sleeve 42 blocks and limits the bottom support plate 2, thereby avoiding the reduction gear body 1 from deflecting or jumping upward during use, and the first lower pressing sleeve 42 and the second lower pressing sleeve 43 can buffer and dissipate most of the vibrations transmitted from the bottom support plate 2, avoiding the resonance noise of the squeezing washer 45 during use, thereby ensuring the working stability of the reduction gear body 1.

[0032] The limiting assembly 4 includes a limiting vertical rod 41, a first lower pressing sleeve 42, a second lower pressing sleeve 43, a locking nut 44 and an extrusion washer 45. The limiting vertical rods 41 are symmetrically installed on the front and rear sides of the bottom support plate 2. The limiting vertical rods 41 are connected to the mounting base plate 33 by welding. Limiting through holes (not shown) are symmetrically provided on the front and rear sides of the bottom support plate 2, and the limiting through holes match the limiting vertical rods 41. The matching limiting through holes and limiting vertical rods 41 will limit the bottom support plate 2 to prevent the bottom support plate 2 from shifting during use. The upper side of the annular side surface of the limiting vertical rod 41 is covered with a first lower pressing sleeve 42. The first lower pressing sleeve 42 is made of butyl rubber. The first lower pressing sleeve 42 made of butyl rubber has shock absorbing ability and can not only The second lower pressure sleeve 43 is made of polyurethane rubber and has good shock absorption performance, so as to buffer most of the vibrations transmitted through the first lower pressure sleeve 42. An extrusion washer 45 is installed on the upper end surface of the second lower pressure sleeve 43. The extrusion washer 45 can further increase the downward pressure area of ​​the compression nut 44. A compression nut 44 is installed on the upper side of the annular side surface of the limiting vertical rod 41. The compression nut 44 is made of a locking nut. The locking nut 44 made of a locking nut can not only exert downward pressure on the extrusion washer 45, but also will not easily loosen during use.

[0033] The first lower pressing sleeve 42 is provided with a first inner sleeve 421 inside, and the first inner sleeve 421 is made of wear-resistant rubber. The first inner sleeve 421 made of wear-resistant rubber makes the first lower pressing sleeve 42 more wear-resistant, thereby ensuring the service life of the first lower pressing sleeve 42. The second lower pressing sleeve 43 is provided with a second inner sleeve 431 inside, and the second inner sleeve 431 is made of wear-resistant rubber. The first inner sleeve 421 and the second inner sleeve 431 are matched with the limiting vertical rod 41. The second inner sleeve 431 made of wear-resistant rubber makes the first lower pressing sleeve 42 more wear-resistant. The second lower pressure sleeve 43 has better internal wear resistance, thereby ensuring the service life of the second lower pressure sleeve 43. A reinforcing plate 46 is fixedly connected to the lower side of the annular side of the limiting vertical rod 41. The reinforcing plate 46 is connected to the limiting vertical rod 41 and the mounting base plate 33 by welding. The reinforcing plate 46 makes the connection between the limiting vertical rod 41 and the mounting base plate 33 more stable. An external thread is provided on the upper side of the annular side of the limiting vertical rod 41, and the external thread is meshed with the locking nut 44. The external thread facilitates the installation of the locking nut 44 on the upper side of the annular side of the limiting vertical rod 41.

[0034] Working principle: During the operation of the reducer body 1, a certain vibration will be generated, and the vibration will be transmitted to the top damping plate 31 through the bottom support plate 2. At this time, the top damping plate 31 will dissipate part of the vibration, and then the damping shock absorber 32 will isolate and buffer most of the vibration transmitted through the top damping plate 31. Finally, the isolation pad 34 prevents the resonance noise between the mounting base plate 33 and the external ground, and the multiple through holes 35 can further improve the buffering and shock-absorbing ability of the isolation pad 34, thereby reducing the vibration and resonance noise of the reducer body 1; at the same time, the limiting vertical rod 41 will limit the bottom support plate 2, and the locking nut 44 will block the second lower pressure sleeve 43 through the extrusion washer 45, so that the second lower pressure sleeve 43 blocks the first lower pressure sleeve 42, and then the first lower pressure sleeve 42 blocks the bottom support plate 2, thereby preventing the reducer body 1 from deviating during use. Or upward jumping situation, and the first lower pressure sleeve 42 and the second lower pressure sleeve 43 can buffer most of the vibrations transmitted from the bottom support plate 2, avoiding the resonance noise of the extrusion gasket 45 during use, and the first inner sleeve 421 and the second inner sleeve 431 make the wear resistance of the first lower pressure sleeve 42 and the second lower pressure sleeve 43 better, thereby ensuring the service life of the first lower pressure sleeve 42 and the second lower pressure sleeve 43; in the later use process, when the damping shock absorber 32 becomes loose, the staff only needs to further turn the locking nuts 44 on the front and rear sides clockwise and tighten them respectively, so that the extrusion gasket 45 can further squeeze the second lower pressure sleeve 43 and the first lower pressure sleeve 42 downward, and then the first lower pressure sleeve 42 can further squeeze the damping shock absorber 32 downward through the bottom support plate 2, so that the shock absorbing structure in the damping shock absorber 32 is no longer loose and is tight, thereby ensuring the shock absorbing effect of the damping shock absorber 32.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A damping mechanism for a reducer, comprising a reducer body (1) and a bottom support plate (2), characterized in that: A bottom support plate (2) is arranged at the bottom of the reducer body (1), a damping assembly (3) is arranged at the bottom of the bottom support plate (2), and the damping assembly (3) is used to isolate and reduce noise of the reducer body (1) during operation, and limit assemblies (4) are symmetrically arranged on the front and rear sides of the reducer body (1), and the limit assemblies (4) are used to limit and press the bottom support plate (2) to prevent the reducer body (1) from shaking or jumping upward during operation.

2. The damping mechanism of a reducer according to claim 1, characterized in that: The damping assembly (3) comprises a top damping plate (31), a damping shock absorber (32) and a mounting base plate (33); the top damping plate (31) is symmetrically bonded to the left and right sides of the lower end surface of the bottom support plate (2); the damping shock absorber (32) is mounted on the lower end surface of the top damping plate (31); and the mounting base plate (33) is mounted on the bottom of the damping shock absorber (32).

3. The damping mechanism of a reducer according to claim 1, characterized in that: The limiting assembly (4) comprises a limiting vertical rod (41), a first lower pressing sleeve (42), a second lower pressing sleeve (43), a locking nut (44) and an extrusion washer (45); the limiting vertical rod (41) is symmetrically installed on the front and rear sides inside the bottom support plate (2); the first lower pressing sleeve (42) is sleeved on the upper side of the annular side of the limiting vertical rod (41); the second lower pressing sleeve (43) is installed on the upper end surface of the first lower pressing sleeve (42); the extrusion washer (45) is installed on the upper end surface of the second lower pressing sleeve (43); and the locking nut (44) is installed on the upper side of the annular side of the limiting vertical rod (41).

4. The damping mechanism of a reducer according to claim 3, characterized in that: A first inner sleeve (421) is arranged inside the first lower pressure sleeve (42), and the material of the first inner sleeve (421) is wear-resistant rubber; a second inner sleeve (431) is arranged inside the second lower pressure sleeve (43), and the material of the second inner sleeve (431) is wear-resistant rubber; the first inner sleeve (421) and the second inner sleeve (431) are both matched with the limiting vertical rod (41).

5. The damping mechanism of a reducer according to claim 3, characterized in that: A reinforcing sheet (46) is fixedly connected to the lower side of the annular side surface of the limiting vertical rod (41), and an external thread is provided on the upper side of the annular side surface of the limiting vertical rod (41), and the external thread is meshed with a locking nut (44).

6. The damping mechanism of a reducer according to claim 2, characterized in that: The lower end surface of the mounting substrate (33) is provided with a vibration isolation pad (34), a plurality of through holes (35) are provided inside the vibration isolation pad (34), the vibration isolation pad (34) is made of polyurethane rubber, and the top damping sheet (31) is made of a damping pad.

7. The damping mechanism of a reducer according to claim 3, characterized in that: The first lower pressing sleeve (42) is made of butyl rubber, the second lower pressing sleeve (43) is made of polyurethane rubber, and the locking nut (44) is made of a locking nut.

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