CN211778849U

CN211778849U - Differential gear of agricultural vehicle

Info

Publication number: CN211778849U
Application number: CN202020362972.6U
Authority: CN
Inventors: 詹加旺
Original assignee: Zhejiang Zhenhua Precision Forging Gear Co ltd
Current assignee: Zhejiang Zhenhua Precision Forging Gear Co ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-10-27
Anticipated expiration: 2030-03-20

Abstract

The utility model provides an agricultural vehicle differential mechanism gear belongs to gear manufacturing technical field. The differential gear solves the problems that the prior differential gear of the agricultural vehicle has poor meshing effect due to abrasion, causes radial run-out and generates vibration. This agricultural vehicle differential gear is equipped with the foreign steamer tooth that inclines in gear body axis direction including being used for with the gear body of differential mechanism pivot assembly on the gear body, forms the tooth's socket between two adjacent foreign steamer teeth, has the shaft hole that runs through in gear body axis direction on the gear body, differential mechanism pivot axial assemble in the shaft hole, be provided with between gear body and the differential mechanism pivot when the foreign steamer tooth rotation meshing wearing and tearing of gear body, this gear body physical stamina carries out the automatic regulating apparatus of axial displacement compensation automatically. The utility model has the advantages of simple structure and reasonable design, can carry out axial displacement compensation automatically when the gear body wearing and tearing, can effectively avoid causing radial runout, production vibration by the meshing effect is not good.

Description

Differential gear of agricultural vehicle

Technical Field

The utility model belongs to the technical field of the gear manufacturing, a agricultural vehicle differential mechanism gear is related to.

Background

China is a big agricultural country, agricultural machinery modernization is a national policy of China, modern machines and tools need to be perfectly combined with multiple functions and high quality, agricultural products such as rotary cultivators and the like as important members of agricultural machinery products also naturally bear and share the important role of enjoying agriculture, the trend of rising year by year of the number of matched machines and tools of a high-horsepower tractor is out of gear from the expansion view of national markets and even global markets, the problem of improving the product quality becomes more rigorous under the drive of high horsepower, gear parts in a differential case serve as key parts, and the quality of the gear parts and the quality of assembly quality directly influence the overall quality of the whole machine.

The structure of the gear in the existing differential case generally comprises a gear body, a through hole is axially arranged in the middle of the gear body, a connecting shaft penetrates through the through hole, the gear body is connected to a gear carrier through the connecting shaft, outer wheel teeth inclined to the central line direction of the gear body are arranged on the gear body, one end face of the gear body is a plane, the other end face of the gear body is an umbrella-shaped face matched with the inner wall of the differential case, but the lubricating effect between the umbrella-shaped face and the inner wall of the differential case is poor, the service life is influenced, in addition, the axial position between the gear body and the connecting shaft is fixed, axial compensation displacement cannot be realized, when the gear body is seriously abutted and abraded, the tooth space meshing effect of the gear body is poor, radial jumping and vibration are caused, the abnormal sound, heating, high noise and other fault phenomena easily occur, and the gear is seriously damaged early, the service life is short.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, can carry out axial displacement compensation automatically when the gear body wearing and tearing, can effectively avoid causing radial runout, producing vibrating agricultural vehicle differential gear by the meshing effect is not good.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an agricultural vehicle differential gear, is including being used for the gear body with the assembly of differential mechanism pivot, the gear body on be equipped with the foreign steamer tooth that inclines in gear body axis direction, form the tooth's socket between two adjacent foreign steamer teeth, the gear body on have the shaft hole that runs through in gear body axis direction, differential mechanism pivot axial assemble in the shaft hole in, its characterized in that, gear body and differential mechanism pivot between be provided with when the foreign steamer tooth rotation meshing wearing and tearing of gear body, this gear body can carry out the automatic regulating apparatus of axial displacement compensation automatically.

This agricultural vehicle differential gear mainly is provided with automatic regulating apparatus between gear body and differential mechanism pivot to through automatic regulating apparatus as the gear body if there is wearing and tearing and the axial meshing clearance that exists in the rotatory in-process of meshing cooperation, but this gear body automatic axial displacement compensation makes the gear body when rotatory cooperation, and abundant meshing can effectively avoid causing radial run-out, production vibration, long service life by the meshing effect is not good.

In the differential gear of the agricultural vehicle, the automatic adjusting device comprises a strip-shaped elastic rubber strip, the middle part of the outer end surface of the gear body is provided with a circular connecting groove, two axially inward-arranged adjusting grooves are radially and symmetrically distributed at the bottom of the circular connecting groove, the elastic rubber strips are positioned in the corresponding adjusting grooves, the stop strips penetrate through the differential mechanism rotating shaft in the radial direction, the two ends of the stop bar extend out of the differential mechanism rotating shaft to form abutting parts, when the differential mechanism rotating shaft is axially assembled on the gear body, the abutting parts at the two ends of the barrier strip are positioned in the corresponding adjusting grooves, the elastic rubber strip is elastically abutted and matched with the abutting parts of the corresponding barrier strip, the gear body and the differential mechanism rotating shaft are provided with a limiting structure which prevents the gear body and the differential mechanism rotating shaft from axially separating when the gear body and the differential mechanism rotating shaft are elastically abutted against and matched through elastic rubber strips. The purpose of setting up like this is mainly through the deformation elastic action of the self of elastic rubber strip make gear body and differential mechanism pivot axial when leaning on carry out axial displacement compensation.

In foretell an agricultural vehicle differential gear, the adjustment tank be the rectangular channel, the elasticity rubber strip be the rectangular strip, when the elasticity rubber strip is in the adjustment tank that corresponds, the equal elasticity of wherein three periphery wall in this elasticity rubber strip is supported and is leaned on the cell wall of adjustment tank, the internal perisporium of elasticity rubber strip be the arc perisporium, the internal perisporium elasticity of elasticity rubber strip support and lean on the outer wall in differential mechanism pivot. The elastic rubber strip can be deformed in a telescopic way along the length direction.

In the differential gear of the agricultural vehicle, the radian of the inner peripheral wall of the elastic rubber strip is the same as the radian of the differential rotating shaft. The purpose of setting up like this is to make differential mechanism pivot and gear body axial assembly stable in structure, long service life.

In foretell an agricultural vehicle differential gear, limit structure include the stop collar and turn over along with stop collar integrated into one piece's annular, the outer wall of stop collar on be provided with the external screw thread, the cell wall of the circular spread groove of the outer terminal surface of gear body on be provided with the internal thread, the external screw thread screwed connection of stop collar on the internal thread of the circular spread groove of the outer terminal surface of gear body, this annular turn over along the axial support and lean on the outer terminal surface of gear body on, when stop collar and gear body linked firmly mutually, the interior terminal surface axial of this stop collar supports to press and makes gear body and differential mechanism pivot axial spacing in the portion of supporting at the both ends of shelves. The purpose of setting up like this can effectively prevent gear body and differential mechanism pivot axial separation, and the mechanical strength that the twist-proof was changeed when this annular turned over along still can strengthening gear body's rotation has long service life.

In the agricultural vehicle differential gear, the outer end face of the gear body is an arc-shaped umbrella face, the annular turning edge is an arc-shaped turning edge, and the annular turning edge is matched with the outer end face of the gear body relatively. This is provided for the purpose of reinforcing the mechanical strength of the outer end face of the gear body.

In the differential gear of the agricultural vehicle, the groove bottoms of the two adjusting grooves are also provided with oil through holes communicated with the groove bottoms of the two tooth grooves. The purpose of this arrangement is to make the annular flange and the outer end face of the gear body capable of being lubricated by oil.

In the differential gear of the agricultural vehicle, the outer edge of the outer wheel gear is processed to be a chamfer. The setting of chamfer is convenient for the meshing of the teeth of a cogwheel, and the transmission process is stable, and has strengthened the compressive capacity of flank profile department, long service life.

Compared with the prior art, the differential gear of the agricultural vehicle has the advantages that: simple structure, reasonable in design can carry out axial displacement compensation automatically when the gear body wearing and tearing, can effectively avoid causing radial runout, production vibration by the meshing effect is not good, gear abnormal sound, generate heat, trouble such as noise are big can not appear, long service life.

Drawings

FIG. 1 is a schematic sectional view of a differential gear of the agricultural vehicle.

Fig. 2 is a schematic sectional view in the direction of a-a in fig. 1.

In the figure, 1, a differential mechanism rotating shaft; 2. a gear body; 3. outer gear teeth; 4. an elastic rubber strip; 5. a stop bar; 6. an abutting portion; 7. a limiting sleeve; 8. annularly turning over the edge; 9. an oil through hole; 10. and (6) chamfering.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figures 1 and 2, the differential gear of the agricultural vehicle mainly comprises a gear body 2 assembled with a differential rotating shaft 1, outer wheel teeth 3 inclined to the axis direction of the gear body 2 are arranged on the gear body 2, tooth grooves are formed between every two adjacent outer wheel teeth 3, a shaft hole penetrating through the axis direction of the gear body 2 is formed in the gear body 2, the differential rotating shaft 1 is axially assembled in the shaft hole, and an automatic adjusting device capable of automatically compensating axial displacement is arranged between the gear body 2 and the differential rotating shaft 1 when the outer wheel teeth 3 of the gear body 2 are in rotating meshed abrasion.

In actual manufacturing, the specific implementation of the automatic adjusting device is as follows: mainly by being banding elastic rubber strip 4, the middle part position of the outer terminal surface of gear body 2 has circular spread groove, the tank bottom radial symmetry distribution of circular spread groove has two to be the inward adjustment tank of axial setting, elastic rubber strip 4 is in corresponding adjustment tank, radially wear to be equipped with shelves strip 5 on the differential mechanism pivot 1, the both ends of this shelves strip 5 all stretch out differential mechanism pivot 1 and form to lean on portion 6, when differential mechanism pivot 1 axial assembly is in gear body 2, the portion 6 that leans on at the both ends of this shelves strip 5 all is in corresponding adjustment tank, elastic rubber strip 4 and the cooperation of leaning on 6 elasticity of the corresponding shelves strip 5; specifically speaking: the adjusting groove is a rectangular groove, the elastic rubber strips 4 are rectangular strips, when the elastic rubber strips 4 are positioned in the corresponding adjusting grooves, three outer peripheral walls of the elastic rubber strips 4 are elastically abutted against the groove walls of the adjusting groove, the inner peripheral walls of the elastic rubber strips 4 are arc-shaped peripheral walls, and the inner peripheral walls of the elastic rubber strips 4 are elastically abutted against the outer wall of the differential mechanism rotating shaft 1; the arc degree of the inner peripheral wall of the elastic rubber strip 4 is the same as that of the differential rotating shaft 1.

Still be provided with between gear body 2 and the differential mechanism pivot 1 and lean on when the cooperation through elasticity rubber strip 4 elasticity, prevent gear body 2 and the axial separation's of differential mechanism pivot 1 limit structure when gear body 2 and differential mechanism pivot 1. During actual manufacturing, the specific implementation mode of the limiting structure is as follows: the limiting device mainly comprises a limiting sleeve 7 and an annular turning edge 8 which is integrally formed with the limiting sleeve 7, wherein an external thread is arranged on the outer wall of the limiting sleeve 7, an internal thread is arranged on the groove wall of a circular connecting groove on the outer end face of the gear body 2, the external thread of the limiting sleeve 7 is spirally connected to the internal thread of the circular connecting groove on the outer end face of the gear body 2, the annular turning edge 8 is axially abutted against the outer end face of the gear body 2, and when the limiting sleeve 7 is fixedly connected with the gear body 2, the inner end face of the limiting sleeve 7 is axially abutted against abutting parts 6 at two ends of a stop strip 5 so that the gear body 2 and a differential mechanism rotating shaft 1 are axially limited; specifically speaking: the outer end face of the gear body 2 is an arc umbrella face, the annular turning edge 8 is an arc turning edge, and the annular turning edge 8 is matched with the outer end face of the gear body 2 relatively.

During actual manufacturing, oil through holes 9 communicated with the groove bottoms of two tooth grooves are further formed in the groove bottoms of the two adjusting grooves; the outer edge of the outer gear teeth 3 is processed to be a chamfer 10.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an agricultural vehicle differential gear, is including being used for gear body (2) with differential mechanism pivot (1) assembly, gear body (2) on be equipped with the outer teeth of a cogwheel (3) of slope in gear body (2) axis direction, form the tooth's socket between two adjacent outer teeth of a cogwheel (3), gear body (2) on have and run through in the shaft hole of gear body (2) axis direction, differential mechanism pivot (1) axial assemble in the shaft hole in, a serial communication port, gear body (2) and differential mechanism pivot (1) between be provided with when the rotatory meshing wearing and tearing of outer teeth of a cogwheel (3) of gear body (2), the automatic regulating apparatus of axial displacement compensation can be carried out automatically in this gear body (2).

2. The differential gear of the agricultural vehicle according to claim 1, wherein the automatic adjusting device comprises a strip-shaped elastic rubber strip (4), a circular connecting groove is formed in the middle position of the outer end surface of the gear body (2), two axially inward-arranged adjusting grooves are radially and symmetrically distributed on the bottom of the circular connecting groove, the elastic rubber strip (4) is located in the corresponding adjusting groove, a stop strip (5) radially penetrates through the differential rotating shaft (1), two ends of the stop strip (5) extend out of the differential rotating shaft (1) to form abutting portions (6), when the differential rotating shaft (1) is axially assembled on the gear body (2), the abutting portions (6) at two ends of the stop strip (5) are located in the corresponding adjusting grooves, the elastic rubber strip (4) and the abutting portions (6) of the stop strip (5) are in elastic abutting fit, the gear body (2) and the differential mechanism rotating shaft (1) are further provided with a limiting structure which prevents the gear body (2) and the differential mechanism rotating shaft (1) from being axially separated when the gear body (2) and the differential mechanism rotating shaft (1) are elastically abutted against and matched through an elastic rubber strip (4).

3. The differential gear of the agricultural vehicle according to claim 2, wherein the adjusting groove is a rectangular groove, the elastic rubber strip (4) is a rectangular strip, when the elastic rubber strip (4) is located in the corresponding adjusting groove, three outer peripheral walls of the elastic rubber strip (4) are elastically abutted against the groove wall of the adjusting groove, the inner peripheral wall of the elastic rubber strip (4) is an arc-shaped peripheral wall, and the inner peripheral wall of the elastic rubber strip (4) is elastically abutted against the outer wall of the differential rotating shaft (1).

4. The differential gear of the agricultural vehicle according to claim 3, characterized in that the radian of the inner peripheral wall of the elastic rubber strip (4) is the same as the radian of the differential rotating shaft (1).

5. The differential gear of the agricultural vehicle as claimed in claim 4, characterized in that the limiting structure comprises a limiting sleeve (7) and an annular turned edge (8) which is integrally formed with the limiting sleeve (7), the outer wall of the limiting sleeve (7) is provided with external threads, the groove wall of the circular connecting groove on the outer end surface of the gear body (2) is provided with internal threads, the external thread of the limiting sleeve (7) is spirally connected on the internal thread of the circular connecting groove on the outer end surface of the gear body (2), the annular turning edge (8) is axially abutted against the outer end face of the gear body (2), when the limiting sleeve (7) is fixedly connected with the gear body (2), the inner end surface of the limiting sleeve (7) is axially pressed on the abutting parts (6) at the two ends of the stop bar (5) to axially limit the gear body (2) and the differential mechanism rotating shaft (1).

6. The differential gear of the agricultural vehicle as claimed in claim 5, wherein the outer end face of the gear body (2) is an arc umbrella face, the annular turned edge (8) is an arc turned edge, and the outer end faces of the annular turned edge (8) and the gear body (2) are matched with each other relatively.

7. The differential gear of the agricultural vehicle as claimed in claim 6, wherein the groove bottoms of the two adjustment grooves are further provided with oil through holes (9) communicated with the groove bottoms of two of the grooves.

8. An agricultural vehicle differential gear according to claim 7, characterized in that the outer edges of the outer gear teeth (3) are chamfered (10).