CN214578700U

CN214578700U - Vibration reduction gear

Info

Publication number: CN214578700U
Application number: CN202120655597.9U
Authority: CN
Inventors: 尹航; 龚俊杰; 韦源源; 陆永乐; 王卫; 徐同
Original assignee: Yangzhou University
Current assignee: Yangzhou University
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-11-02
Anticipated expiration: 2031-03-31

Abstract

The utility model provides a vibration damping gear in the mechanical technical field, which comprises a central shaft and a gear body which is concentrically arranged with the central shaft, wherein a vibration damping component is connected between the gear body and the central shaft, the vibration damping component comprises a plurality of positioning pins which are uniformly distributed on the periphery of the central shaft, a vibration damping spring is sleeved on each positioning pin, the vibration damping spring is arranged between the outer edge of the central shaft and the inner edge of the gear body, and one end of each positioning pin, which is far away from the central shaft, is connected with the gear body; the utility model discloses simple structure, the dismouting is maintained conveniently, reduces the vibration of gear.

Description

Vibration reduction gear

Technical Field

The utility model belongs to the technical field of machinery, in particular to damping gear.

Background

The gear transmission is a transmission form which is widely applied in mechanical transmission, can be used for transmitting motion and power between any two shafts, and has the advantages of accurate transmission, high efficiency, compact structure, reliable work and long service life. In a high-speed gear transmission system, gear meshing impact is brought due to the existence of internal and external factors such as gear tooth clearance, time-varying meshing rigidity, gear manufacturing and mounting errors, rotating speed variation and the like, so that gear vibration is caused, and the gear becomes an important vibration source influencing the acoustic performance of an automobile.

In order to reduce the vibration of the gear, in the prior art, a damping layer and an additional damping ring are coated on a gear body of the gear or a high-damping material is adopted to process the gear and the like, the damping material is generally a non-metal material such as rubber or plastic and is easy to age, the aging of the damping material is further accelerated when the gear is used in a high-temperature environment for a long time, the damping effect is reduced, in addition, special damping oil is required to be adopted for the damping material, the damper can achieve the perfect damping effect only when the damping oil changes along with the temperature in any environment and has stable performance, and the disassembly is troublesome when the damping material needs to be replaced.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model discloses an overcome the weak point among the above-mentioned prior art, provide a damping gear, solve the easy ageing technical problem of structure that realizes the damping effect among the prior art, the utility model discloses simple structure, the dismouting is maintained conveniently, can effectively reduce vibration and noise.

The purpose of the utility model is realized like this: the utility model provides a damping gear, includes the center pin and the concentric gear body that sets up with the center pin, be connected with the damping subassembly between gear body and the center pin, the damping subassembly includes a plurality of locating pins of equipartition in the center pin periphery, the cover is equipped with damping spring on the locating pin, and damping spring is between center pin outer fringe and gear body inner edge, and the one end and the gear body coupling of center pin are kept away from to the locating pin.

In the utility model, when the rotating shaft connected with the shaft hole of the central shaft rotates, the rotating shaft drives the central shaft to rotate, and the central shaft drives the gear body to rotate through the damping assembly, thereby realizing the rotating motion of the utility model, and the impact vibration and other energy absorption and energy storage of the damping spring in the meshing process of the gear body can achieve the effect of vibration damping and dynamic noise reduction; the utility model has simple and compact structure, reduces the vibration noise when the gear is engaged, and is lighter; can be used as a gear.

In order to further facilitate the installation of the positioning pin, a plurality of positioning grooves which can just allow one end of the positioning pin far away from the central shaft to be inserted into the gear body are uniformly distributed on the inner side of the gear body, and one end of the positioning pin far away from the central shaft is abutted against the limiting step of the gear body.

For further fixed position round pin, the one end fixedly connected with gag lever post of center pin is kept away from to the locating pin, the gag lever post can just stretch into in the constant head tank, and the gag lever post stretches out this external one end of gear and this body coupling of gear.

In order to further improve the reliability of the connecting structure of the central shaft, the gear body and the vibration reduction assembly, a flange is fixedly connected to the outer side of the gear body in the axial direction, a plurality of limit grooves are uniformly distributed at one end, facing the gear body, of the flange, one end, extending out of the gear body, of the limit rod is just inserted into the limit grooves, and the limit rod is tightly pressed on the locating pin when the flange is connected with the gear body.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a view from a-a in fig. 1.

Fig. 3 is a structural diagram of the middle positioning pin of the present invention.

Fig. 4 is a view from the direction B-B in fig. 3.

The gear comprises a central shaft 1, a gear body 2, a limit step 201, a 202 accommodating groove, a damping assembly 3, a positioning pin 301, a damping spring 302, a flange 4, a limit rod 5 and a rubber block 6.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-4, the vibration reduction gear includes a central shaft 1 and a gear body 2 concentrically disposed with the central shaft 1, a vibration reduction assembly 3 is connected between the gear body 2 and the central shaft 1, the vibration reduction assembly 3 includes a plurality of positioning pins 301 uniformly distributed on the periphery of the central shaft 1, a vibration reduction spring 302 is sleeved on the positioning pins 301, the vibration reduction spring 302 is between the outer edge of the central shaft 1 and the inner edge of the gear body 2, one end of the positioning pin 301 far from the central shaft 1 is connected with the gear body 2, one end of the positioning pin 301 far from the central shaft 1 is polygonal, and in this embodiment, a square shape is preferred.

In order to further make things convenient for the installation of locating

301, 2 inboard equipartitions of gear body have a plurality of can just let locating pin 301 keep away from the one end of center pin 1 and inject the constant head tank in the gear body 2, the one end that center pin 1 was kept away from to locating pin 301 is contradicted on the spacing rank of gear body 2, the one end fixedly connected with gag lever post 5 that center pin 1 was kept away from to locating pin 301, gag lever post 5 can just stretch into in the constant head tank, gag lever post 5 stretches out the outer one end of gear body 2 and is connected with gear body 2.

In order to further improve center pin 1,

gear body

2 and 3 connection structure's of damping subassembly reliability, the ascending outside fixedly connected with flange 4 of 2 axial directions of gear body, flange 4 has a plurality of spacing grooves towards the one end equipartition of gear body 2, and the one end that gag lever post 5 stretches out the gear body 2 is just inject the spacing inslot, compresses tightly gag lever post 5 on locating pin 301 when flange 4 is connected with gear body 2.

In the utility model, the inner end of the gear body 2 is provided with the holding tank 202, the holding tank 202 is arranged right opposite to the end of the positioning pin 301 away from the central shaft, the gear body 2 is provided with the rubber block 6 through the holding tank 202, and the end of the positioning pin 301 away from the central shaft is butted on the rubber block 6, so as to further absorb vibration and reduce noise; when the rotating shaft connected with the shaft hole of the central shaft 1 rotates, the rotating shaft drives the central shaft 1 to rotate, the central shaft 1 drives the gear body 2 to rotate through the damping assembly 3, so that the rotary motion of the utility model is realized, and the impact vibration and the like of the gear body 2 in the meshing process can achieve the effect of damping vibration and reducing noise through the energy absorption and storage of the damping spring 302; during installation, the positioning pins 301 are pressed into the central shaft 1, one ends of the positioning pins 301, far away from the central shaft 1, are inserted into the gear body 2 through the positioning shafts to enable the positioning pins to abut against the connecting steps of the gear body 2, the limiting rods 5 are connected to the positioning pins 301, the flanges 4 are fixed on the outer side of the gear body 2 through fixing bolts, the limiting rods 5 are inserted into limiting grooves of the flanges 4, the flanges 4 tightly press the limiting rods 5 on the positioning pins 301, and installation is convenient; when the device is disassembled, all parts are disassembled reversely; the utility model has simple structure, light weight and convenient disassembly, assembly and maintenance, and can reduce the vibration when the gear is meshed; can be used as a gear.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims

1. A vibration-damping gear characterized by: the gear comprises a central shaft and a gear body concentrically arranged with the central shaft, wherein a damping assembly is connected between the gear body and the central shaft and comprises a plurality of positioning pins uniformly distributed on the periphery of the central shaft, damping springs are sleeved on the positioning pins and are arranged between the outer edge of the central shaft and the inner edge of the gear body, and one ends of the positioning pins far away from the central shaft are connected with the gear body.

2. A vibration reducing gear according to claim 1, wherein: a plurality of positioning grooves which can just allow one end of the positioning pin far away from the central shaft to be inserted into the gear body are uniformly distributed on the inner side of the gear body, and one end of the positioning pin far away from the central shaft is abutted against the limiting step of the gear body.

3. A vibration reducing gear according to claim 2, wherein: the one end fixedly connected with gag lever post of center pin is kept away from to the locating pin, the gag lever post can just stretch into in the constant head tank, and the gag lever post stretches out this external one end of gear and this body coupling of gear.

4. A vibration reducing gear according to claim 3, wherein: the outer side of the gear body in the axial direction is fixedly connected with a flange, a plurality of limiting grooves are uniformly distributed at one end, facing the gear body, of the flange, one end, extending out of the gear body, of the limiting rod is just inserted into the limiting grooves, and the limiting rod is tightly pressed on the locating pin when the flange is connected with the gear body.