CN104976311A - Adjustable type double-bevel-gear transmission mechanism - Google Patents

Abstract

The invention discloses an adjustable double bevel gear transmission mechanism, which comprises an input part, a differential mechanism and two output shafts coaxially fixed to the two side gears of the differential mechanism, the input part It is engaged with the differential body of the differential mechanism through two mirror-symmetrical bevel gear pairs for meshing transmission; the extension length of the output shaft is adjustable, and the adjustable double bevel gear transmission mechanism of the present invention, its input part It is meshed with the differential body of the differential mechanism through two mirror-symmetrical bevel gear pairs, and the driven wheels of the two bevel gear pairs can offset the axial component force and ensure the axial force of the differential body. Balanced, which is beneficial to the operation of the differential mechanism and prolongs the service life; the extension length of the output shaft is adjustable, which is convenient for use.

Description

Adjustable double bevel gear transmission mechanism

technical field

The invention relates to a mechanical device, in particular to an adjustable double bevel gear transmission mechanism.

Background technique

Differentials are often used in vehicles to enable the left and right drive wheels to rotate at different speeds. They are mainly composed of left and right side shaft gears, two planetary gears, casings, planetary wheel shafts and a differential body as a planetary carrier. When the car turns When driving or driving on uneven roads, make the left and right wheels roll at different speeds, that is, ensure the pure rolling motion of the driving wheels on both sides. In the prior art, the differential body of the differential and the input shaft are generally connected through a bevel gear pair, and affected by the pressure angle of the gear pair, the driven wheel of the bevel gear pair will receive axial thrust and transfer the force It is transmitted to the differential body, causing the axial force of the differential body to be unbalanced, which is not conducive to the operation of the differential mechanism and affects the service life. In the prior art, the distance between the left and right wheels cannot be adjusted according to the ridge width of the field, so When the ridge width of the field is not standardized, it is not conducive to vehicles driving in the field.

Contents of the invention

In view of this, the object of the present invention is to provide an adjustable double bevel gear transmission mechanism, which can ensure the axial force balance of the differential body of the differential mechanism, facilitate the operation of the differential mechanism, prolong the service life, and facilitate adjustment Protrusion length of the output shaft.

The adjustable double bevel gear transmission mechanism of the present invention comprises an input part, a differential mechanism and two output shafts corresponding to the two side gears coaxially fixed to the differential mechanism, the input part and the differential The differential bodies of the mechanism are meshed and driven by two mirror-symmetrical bevel gear pairs; the output shaft includes an inner shaft, an outer shaft, a positioning sleeve and a spring arranged coaxially; the inner shaft is fixed to the corresponding half shaft For gears, the outer shaft is inserted into the inner shaft and connected with the inner shaft through threads; the positioning sleeve is sleeved on the outside of the outer shaft and is slidably connected to the outer shaft with a single degree of freedom in the axial direction, and the end faces of the positioning sleeve and the inner shaft are passed through teeth Docking, the spring is connected between the outer shaft and the positioning sleeve to provide elastic force for the positioning sleeve to press the positioning sleeve and the inner shaft;

Further, the input part includes an input shaft and a reversing shaft arranged parallel to the input shaft and arranged axially along the output shaft; the reversing shaft and the input shaft are connected through a gear pair to make the connection between the reversing shaft and the input shaft reverse rotation between each other;

Further, the first driving bevel gear is coaxially fixed on the input shaft; the first driven bevel gear for meshing transmission with the first driving bevel gear is fixed on the differential body of the differential mechanism; A second driving bevel gear is fixed coaxially; a second driven bevel gear for meshing transmission with the second driving bevel gear is fixed on the differential body of the differential mechanism;

Further, the first driven bevel gear and the second driven bevel gear are arranged at both axial ends of the differential body;

Further, both the input shaft and the reversing shaft are rotationally connected to the housing of the differential mechanism with a single degree of freedom.

The beneficial effects of the present invention are: in the adjustable double bevel gear transmission mechanism of the present invention, the input part and the differential body of the differential mechanism are meshed and driven by two bevel gear pairs that are mirror images of each other, and the two The driven wheel of the bevel gear pair can offset the axial force component and ensure the axial force balance of the differential body, which is beneficial to the operation of the differential mechanism and prolongs the service life; the extension length of the output shaft is adjustable for easy use.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Detailed ways

Fig. 1 is a schematic structural view of the present invention, as shown in the figure: the adjustable double bevel gear transmission mechanism of this embodiment includes an input part, a differential mechanism and two halves that are coaxially fixed to the differential mechanism in one-to-one correspondence The two output shafts 2 of the shaft gear 1, the input part and the differential body 3 of the differential mechanism are meshed and transmitted through two mirror-symmetrical bevel gear pairs; the output shaft 2 includes a coaxial inner Shaft 9, outer shaft 8, positioning sleeve 10 and spring 11; the inner shaft 9 is fixed to the corresponding side gear 1, the outer shaft 8 is inserted into the inner shaft 9 and connected with the inner shaft 9 through threads; the positioning sleeve 10 is sleeved on the outside of the outer shaft 8 and is slidably connected to the outer shaft 8 with a single axial degree of freedom. The end faces of the positioning sleeve 10 and the inner shaft 9 are butted through teeth, and the spring 11 is connected between the outer shaft 8 and the positioning sleeve 10 It is used to provide elastic force for the positioning sleeve 10 to press the positioning sleeve 10 and the inner shaft 9. The outer shaft 8 is provided with a boss for axially supporting the spring 11; 10 axially connected axial chute, the inner wall of the positioning sleeve 10 is provided with a slider that matches the axial chute, the outer shaft 8 and the inner shaft 9 can be locked and positioned through the positioning sleeve 10, and the manual compression spring 11 makes After the positioning sleeve 10 is separated from the inner shaft 9, the extension length of the outer shaft 8 can be adjusted by turning the outer shaft 8. Therefore, when the adjustable double bevel gear transmission mechanism of this embodiment is used in a vehicle, it is not necessary to disassemble the output shaft 2. The distance between the wheels on the two output shafts 2 can be adjusted by the wheels, and the operation is simple and convenient. The two output shafts 2 are connected to the shell 4 of the differential mechanism by single-degree-of-freedom rotation, and the differential body 3 of the differential mechanism passes through the two output shafts. 2 Rotationally connected to the housing 4 of the differential mechanism, the input part and the differential body 3 of the differential mechanism are meshed and transmitted through two mirror-symmetrical bevel gear pairs, which can ensure the axial force balance of the differential body 3, It is beneficial to the operation of the differential mechanism and prolongs the service life; since the two bevel gear pairs are connected to the differential body 3 through transmission, the driven wheels of the two bevel gear pairs must be coaxially set with the differential body 3, so the two bevel gear pairs The auxiliary is arranged along the axial direction of the differential body 3 .

In this embodiment, the input part includes an input shaft 12 and a reversing shaft 13 arranged parallel to the input shaft 12 and axially arranged along the output shaft 2; The connection makes the reverse rotation between the reversing shaft 13 and the input shaft 12, creating conditions for setting a bevel gear pair between the input shaft 12 and the differential body 3 and between the reversing shaft 13 and the differential body 3, Moreover, the power is still input through an input shaft 12, which is consistent with the existing vehicle structure and is beneficial to popularization and application.

In this embodiment, the first driving bevel gear 14 is coaxially fixed on the input shaft 12; the first driven bevel gear for meshing transmission with the first driving bevel gear 14 is fixed on the differential body 3 of the differential mechanism 15; the reversing shaft 13 is coaxially fixed with a second driving bevel gear 16; the differential body 3 of the differential mechanism is fixed with a second driven bevel gear 17 for meshing transmission with the second driving bevel gear 16, The first driving bevel gear 14 meshes with the first driven bevel gear 15 to form a bevel gear pair, and the second driving bevel gear 16 meshes with the second driven bevel gear to form another bevel gear pair. Describe two bevel gear pairs.

In this embodiment, the first driven bevel gear 15 and the second driven bevel gear 17 are arranged at both ends of the differential body 3 in the axial direction. Good stress performance.

In this embodiment, the input shaft 12 and the reversing shaft 13 are both rotationally connected to the housing 4 of the differential mechanism with a single degree of freedom, and the integrity is good.

Claims (5)

1. an adjustable bipyramid tooth driving mechanism, it is characterized in that: comprise input part, box of tricks and be coaxially fixed on two output shafts of two differential gears of box of tricks one to one, by two bevel gear pair engagement driving of specular each other between the differential body of described input part and box of tricks; Described output shaft comprises the coaxial inner shaft, outer shaft, setting sleeve and the spring that arrange; Described interior axle is fixed on corresponding differential gear, is threaded connection in axle in described outer shaft inserts with interior axle; Described setting sleeve is set in outer shaft outside and axial single-degree-of-freedom is slidably connected to outer shaft, and the end face of setting sleeve and interior axle is docked by dental inlay tooth, and described spring is connected between outer shaft and setting sleeve for providing elastic force to make setting sleeve and interior shaft compression for setting sleeve.

2. adjustable bipyramid tooth driving mechanism according to claim 1, is characterized in that: described input part comprises input shaft and to be arranged in parallel with input shaft and along the reversing shaft of output shaft axially-aligned; Be in transmission connection by gear pair between described reversing shaft and input shaft and make mutually to rotate backward between reversing shaft and input shaft.

3. adjustable bipyramid tooth driving mechanism according to claim 2, is characterized in that: described input shaft is coaxially fixed with the first drive bevel gear; The differential body of box of tricks is fixed with for the first driven wheel of differential with the first drive bevel gear engagement driving; Described reversing shaft is coaxially fixed with the second drive bevel gear; The differential body of box of tricks is fixed with for the second driven wheel of differential with the second drive bevel gear engagement driving.

4. adjustable bipyramid tooth driving mechanism according to claim 3, is characterized in that: described first driven wheel of differential and the second driven wheel of differential are respectively in the axial two ends of differential body.

5. adjustable bipyramid tooth driving mechanism according to claim 4, is characterized in that: described input shaft and the equal single-degree-of-freedom of reversing shaft are rotationally connected with the shell of box of tricks.