CN212055745U

CN212055745U - Elastic buffer device for transmission shaft

Info

Publication number: CN212055745U
Application number: CN202020706257.XU
Authority: CN
Inventors: 张坤; 王怀茂; 王立群
Original assignee: Tangshan Dingshi Automobile Manufacturing Co ltd
Current assignee: Tangshan Dingshi Automobile Manufacturing Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-12-01
Anticipated expiration: 2030-04-30

Abstract

The utility model relates to a transmission shaft, especially an elastic buffer device for transmission shaft. The transmission device comprises a shaft sleeve, wherein a first key groove connected with an output shaft is arranged in the shaft sleeve, a fixed sleeve fixedly connected with the circumference of the shaft sleeve is sleeved at one end of the shaft sleeve, a flange structure is arranged at the inner end of the fixed sleeve, a circular first movable disc is sleeved at the middle part of the shaft sleeve, a bearing is embedded at the other end of the shaft sleeve, a disc-shaped second movable disc is arranged at the outer side of the bearing, a boss structure matched with an inner ring of the bearing is arranged at the center of the inner side of the second movable disc, a plurality of elastic buffer parts are respectively and uniformly distributed between the fixed sleeve and the first movable disc and between the first movable disc and the second movable disc, and the fixed sleeve, the elastic buffer parts; and the outer side surface of the second movable disc is provided with a mounting hole connected with the transmission shaft. The utility model provides a bolt that takes place on the engineering machine tool transmission shaft cut off, transmission shaft fracture, distortion, vibration and shift various damage phenomena such as pause and pause in control.

Description

Elastic buffer device for transmission shaft

Technical Field

The utility model relates to a transmission shaft, especially an elastic buffer device for transmission shaft.

Background

The transmission shaft is a component for connecting a driving shaft of a gearbox with a driven shaft of a drive axle and transmitting motion and torque. The transmission shaft can compensate small deviation between two shafts caused by inaccurate manufacture and installation, deformation or thermal expansion in work, axial deviation, radial deviation, angular deviation or comprehensive deviation, and buffer impact and shock absorption. When the relative displacement degree of the axes of two shafts is large due to manufacturing and assembling errors, shaft loading, thermal expansion deformation, relative movement between components and the like, various damage phenomena such as bolt cutting, transmission shaft fracture, torsional deformation, vibration, gear shifting pause and the like can occur on a transmission shaft, and particularly, when the relative displacement degree of the axes of an electric loader is large, energy loss can be generated.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an elastic buffer device for transmission shaft solves the diaxon to the poor time various damage phenomena of neutrality.

The utility model provides a technical scheme that its technical problem adopted is:

an elastic buffer device for a transmission shaft comprises a shaft sleeve, wherein a first key groove connected with an output shaft is arranged in the shaft sleeve, a fixed sleeve fixedly connected with the circumference of the shaft sleeve is sleeved at one end of the shaft sleeve, a flange structure is arranged at the inner end of the fixed sleeve, an annular first movable disc is sleeved at the middle part of the shaft sleeve, a bearing is embedded at the other end of the shaft sleeve, a disc-shaped second movable disc is arranged at the outer side of the bearing, a boss structure matched with an inner ring of the bearing is arranged at the center of the inner side of the second movable disc, a plurality of elastic buffer parts are respectively and uniformly distributed between the fixed sleeve and the first movable disc and between the first movable disc and the second movable disc, and the fixed sleeve, the elastic buffer parts, the first movable disc; and the outer side surface of the second movable disc is provided with a mounting hole connected with the transmission shaft.

Adopt above-mentioned technical scheme the utility model discloses, compare with prior art, beneficial effect is:

the utility model provides a bolt that takes place on the big torsion transmission shaft of engineering machine tool cut off, the transmission shaft fracture, distortion, vibration and shift various damage phenomena such as pause and pause, install and remove, maintain the convenience, improved the life of transmission shaft, reduced cost of maintenance.

Further, the utility model discloses an optimization scheme is:

elastic buffer is cylindrical, and fixed cover and second movable dish are connected with elastic buffer through the bolt respectively, and first movable dish is connected rather than the elastic buffer of both sides through stud.

The sliding key is arranged in a second key groove in the outer circumference of the shaft sleeve, the second key groove is arranged in a cross shape, a third key groove corresponding to the sliding key is arranged on the inner circumferential surface of the first movable disc, and the third sliding groove is matched with the sliding key.

The elastic buffer part is made of special rubber.

Drawings

Fig. 1 is a front view of an embodiment of the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a front view of a bushing in accordance with an embodiment of the present invention;

FIG. 4 is a left side view of FIG. 3;

fig. 5 is a front view of the fixing sleeve of the embodiment of the present invention;

FIG. 6 is a left side view of FIG. 5;

fig. 7 is a schematic view illustrating the connection between the shaft sleeve and the fixing sleeve according to the embodiment of the present invention;

FIG. 8 is a left side view of FIG. 7;

fig. 9 is a front view of a first removable disk in accordance with an embodiment of the present invention;

FIG. 10 is a left side view of FIG. 9;

fig. 11 is a front view of a second removable disk in accordance with an embodiment of the present invention;

FIG. 12 is a left side view of FIG. 10;

in the figure: a shaft sleeve 1; a first key groove 1-1; a second key groove 1-2; positioning a shaft shoulder 1-3; a fixed sleeve 2; a flange structure 2-1; a first movable tray 3; a third key groove 3-1; a second movable tray 4; a boss structure 4-1; positioning the boss 4-2; 4-3 of mounting holes; an elastic buffer 5; a bearing 6; a bolt 7; a stud bolt 8; a slide key 9; a lock washer 10.

Detailed Description

The invention is further described with reference to the following figures and examples.

Referring to fig. 1 and 2, an elastic buffer device for a transmission shaft comprises a shaft sleeve 1, a fixed sleeve 2, a first movable disc 3, a second movable disc 4, an elastic buffer 5, a bearing 6, a bolt 7, a stud bolt 8, a sliding key 9, an anti-loose gasket 10 and the like. A first key groove 1-1 is arranged in a shaft sleeve 1 (shown in figures 3 and 4), the first key groove 1-1 is used for being connected with an output shaft of a gearbox through keys, four second key grooves 1-2 are processed on the outer circumferential surfaces of the middle part and the left part of the shaft sleeve 1, the second key grooves 1-2 are arranged in a cross shape, a sliding key 9 is arranged in the second key grooves 1-2, and the left end of the sliding key 9 is of a step structure. The right end of the shaft sleeve 1 is sleeved with a fixed sleeve 2 (shown in fig. 5 and 6), the fixed sleeve 2 is positioned through a positioning shaft shoulder 1-3 of the shaft sleeve 1, the outer end face of the fixed sleeve 2 is welded with the outer end face of the shaft sleeve 1 (shown in fig. 7 and 8), and the inner end face of the fixed sleeve 2 is provided with a radial flange structure 2-1. The middle part of the shaft sleeve 1 is sleeved with a first movable disc 3 (shown in figures 9 and 10), the first movable disc 3 is in a ring shape, the inner circumferential surface of the first movable disc 3 is provided with a third key groove 3-1, and the third key groove 3-1 is matched with a sliding key 9. The material of the sleeve 1 and the first movable disk 3 is Q345.

A bearing 6 is embedded in a shaft hole at the left end of the shaft sleeve 1, the bearing 6 is a single-row radial ball bearing, and the model is 6309. A second movable disc 4 (shown in fig. 11 and 12) is arranged on the outer side of the bearing 6, the second movable disc 4 is disc-shaped, a cylindrical boss structure 4-1 is arranged at the center of the inner side of the second movable disc 4, the boss structure 4-1 is arranged in the bearing 6, and the boss structure 4-1 is matched with an inner ring of the bearing 6. A positioning boss 4-2 is processed on the outer side surface of the second movable disc 4, the positioning boss 4-2 is used for positioning a flange of the transmission shaft, and the second movable disc 4 is provided with a mounting hole 4-3 connected with the flange of the transmission shaft. The material of the second movable tray 4 is Q345.

8 independent elastic buffer parts 5 are arranged between the fixed sleeve 2 and the first movable disc 3, 8 independent elastic buffer parts 5 are arranged between the first movable disc 3 and the second movable disc 4, the elastic buffer parts 5 are cylindrical, the flange structure 2-1 of the fixed sleeve 2 is connected with the elastic buffer parts 5 through bolts 7, anti-loosening gaskets 10 are arranged between two adjacent bolts 7, and the first movable disc 3 is connected with the elastic buffer parts 5 on two sides of the first movable disc through a stud bolt 9. The fixed sleeve 1, the elastic buffer part 5, the first movable disc 3, the elastic buffer part 5 and the second movable disc 4 are sequentially connected to transmit torque and power. The elastic buffer member 5 is made of special rubber, has the specification model GMT C75/50M12-68, has stronger tearing resistance and low-temperature brittleness resistance, and simultaneously has good dynamic peristalsis performance. This embodiment is when using, installs axle sleeve 1 on the output shaft of loader gearbox, and second movable disc 4 and the flange joint of transmission shaft one end, the input shaft of transaxle is connected to the other end of transmission shaft, and power and moment of torsion axle sleeve 1, fixed cover 2, elastic buffer 5, first movable disc 2, elastic buffer 5 and second movable disc 4 transmit the transmission shaft in proper order.

The second key groove 1-2 of the shaft sleeve 1, the sliding key 9 and the third key groove 3-1 of the first movable disc 3 form a limiting structure, the specific number of the elastic buffering parts 5 is calculated according to the magnitude of the power output torque value, when the power output torque instantaneously exceeds the effective protection range of the elastic buffering device, the limiting structure can play a role in outputting constant torque, meanwhile, the damage to the rubber elastic buffering parts 5 caused by the torque exceeding the protection range is avoided, and the elastic buffering parts 5 can automatically recover to the initial state after the peak torque is eliminated.

The utility model discloses prevent because big torsion power take off and start the impact destruction that inertia moment caused to gear, connection pair, cross, bolt etc. especially can solve the energy loss problem that electric engineering machinery produced by the motor direct-coupled replacement current fluid coupling ware and freewheel clutch back transmission effectively. The utility model discloses real simple structure, be applicable to on the driving system who undertakes different functions in concrete application, it is lower to make and cost of maintenance, be convenient for daily inspection, install and remove, it is convenient to maintain, the device major structure is the non-sealing member, need not to lubricate, need not maintain basically in life duration, it can guarantee to transmit great moment of torsion to the diaxon at the centering nature relatively poor and high-speed rotatory (≦ 2000 r/min) condition to combine traditional transmission shaft device, do not receive the influence that alternation torsion changes, under the condition of transmission limit peak torque, can effectively protect relevant transmission, the specially adapted is on the transmission that produces invariable or alternation super large moment of torsion such as engineering vehicle and field work, and wide application.

The above description is only a preferred and practical embodiment of the present invention, and not intended to limit the scope of the present invention, and all structural equivalents made by using the contents of the specification and drawings are included in the scope of the present invention.

Claims

1. The utility model provides an elastic buffer for transmission shaft, includes the axle sleeve, is equipped with the first keyway with output shaft connection in the axle sleeve, its characterized in that: one end of the shaft sleeve is sleeved with a fixed sleeve fixedly connected with the circumference of the shaft sleeve, the inner end of the fixed sleeve is provided with a flange structure, the middle part of the shaft sleeve is sleeved with a circular first movable disc, the other end of the shaft sleeve is embedded with a bearing, the outer side of the bearing is provided with a disc-shaped second movable disc, the center of the inner side of the second movable disc is provided with a boss structure matched with the inner ring of the bearing, a plurality of elastic buffer parts are respectively and uniformly distributed between the fixed sleeve and the first movable disc and between the first movable disc and the second movable disc, and the fixed sleeve, the elastic buffer parts, the first movable disc, the elastic buffer parts and the second; and the outer side surface of the second movable disc is provided with a mounting hole connected with the transmission shaft.

2. The elastic buffer device for a propeller shaft according to claim 1, wherein: elastic buffer is cylindrical, and fixed cover and second movable dish are connected with elastic buffer through the bolt respectively, and first movable dish is connected rather than the elastic buffer of both sides through stud.

3. The elastic buffer device for a propeller shaft according to claim 1, wherein: the sliding key is arranged in a second key groove in the outer circumference of the shaft sleeve, the second key groove is arranged in a cross shape, a third key groove corresponding to the sliding key is arranged on the inner circumferential surface of the first movable disc, and the third sliding groove is matched with the sliding key.