CN210265567U

CN210265567U - Cross axle universal joint

Info

Publication number: CN210265567U
Application number: CN201921216215.1U
Authority: CN
Inventors: 杨姚金
Original assignee: Yuhuan Wanhong Machinery Co Ltd
Current assignee: Yuhuan Wanhong Machinery Co Ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-04-07
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a cross axle universal joint, which comprises two universal joint forks and a cross axle, wherein two mounting holes are formed on the universal joint forks, four end parts of the cross axle are all sleeved with connecting shells made of ceramic materials, and the inner walls of the mounting holes are embedded with clamp springs for holes; the cross shaft is internally provided with a cross oil storage hole which respectively penetrates through the end faces of the four end parts of the cross shaft, the middle part of the oil storage hole penetrates through one side of the cross shaft, and the middle part of the cross shaft is provided with an oil nozzle. The utility model has the advantages of it is following and effect: the connecting shell is made of ceramic materials, and the four end parts of the cross shaft are all embedded into the connecting shell, so that the friction force between the connecting shell and the cross shaft can be reduced; meanwhile, oil storage holes respectively penetrating through the end faces of the four end portions of the cross shaft are formed in the cross shaft, so that the lubricating grease shell stored in the oil storage holes flows to a gap between the end portion of the cross shaft and the inner wall of the connecting shell, and the friction force between the connecting shell and the cross shaft is further reduced.

Description

Cross axle universal joint

Technical Field

The utility model relates to a mechanical transmission technical field, in particular to cross axle universal joint.

Background

The universal joint is a device for realizing variable-angle power transmission and is used for changing the position of a transmission axis direction.

At present, a chinese patent with an application publication number of CN102141091A and an application publication date of 2011, 8 and 3 discloses a universal joint yoke head, which comprises a pair of universal joint yokes and a cross shaft, wherein the cross section of a hub part of each universal joint yoke is rectangular; the cross shaft is square and is provided with a cylinder.

In above-mentioned universal joint jaw, two universal joint forks pass through the cross axle and connect, and cross axle and universal joint fork clearance fit connect to lead to the frictional resistance of universal joint fork and cross axle junction great, be unfavorable for the transmission.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cross universal joint has the effect that reduces frictional force between universal joint fork and the cross.

The above technical purpose of the present invention can be achieved by the following technical solutions: a universal joint comprises two universal joint forks and a cross shaft, wherein two mounting holes for embedding the end parts of the cross shaft are formed in the universal joint forks; be provided with in the cross and be the cross and run through the oil storage hole of the terminal surface of four tip of cross respectively, one side of cross is run through at the middle part of oil storage hole, the middle part of cross is provided with the glib talker that is used for opening or sealed oil storage hole, be formed with the clearance between the week side of four tip of cross and the inner wall of connecting the shell.

The utility model discloses a further set up to: and a first chamfer is arranged at the junction of the end face of the end part of the cross shaft and the oil storage hole.

The utility model discloses a further set up to: and a second chamfer is arranged on the edge of the end face of the cross shaft.

The utility model discloses a further set up to: the edge of one end, away from each other, of each of the two mounting holes of the universal joint fork is provided with a third chamfer, and the outer diameter, close to one end of the cross shaft, of the connecting shell is smaller than the inner diameter of each mounting hole.

The utility model discloses a further set up to: the periphery sides of the four end parts of the cross shaft are provided with a plurality of grooves distributed in a circumferential array.

The utility model discloses a further set up to: the connecting shell is provided with a limiting block embedded in the limiting groove in the process that the connecting shell is embedded in the mounting hole.

To sum up, the utility model discloses following beneficial effect has:

1. the connecting shell is made of ceramic materials, and the four end parts of the cross shaft are all embedded into the connecting shell, so that the friction force between the connecting shell and the cross shaft can be reduced; meanwhile, oil storage holes respectively penetrating through the end faces of the four end parts of the cross shaft are formed in the cross shaft, so that the lubricating grease shell stored in the oil storage holes flows to a gap between the end part of the cross shaft and the inner wall of the connecting shell, and the friction force between the connecting shell and the cross shaft is further reduced;

2. the end part of the cross shaft is provided with a first chamfer and a second chamfer, and the arrangement of the first chamfer can accelerate the lubricating grease to flow between the end surface of the end part of the cross shaft and the inner wall of the connecting shell; the second chamfer is arranged to enable part of the lubricating grease to gather in a cavity formed between the second chamfer and the inner wall of the connecting shell, so that the storage amount of the lubricating grease in a gap between the end part of the cross shaft and the inner wall of the connecting shell is improved;

3. a third chamfer is arranged at the edge of one end, far away from each other, of the two mounting holes of the same universal joint fork, the outer diameter of one end, close to the cross shaft, of the connecting shell is smaller than the inner diameter of the mounting hole, and the connecting shell is conveniently embedded into the mounting holes and then sleeved at the end part of the cross shaft;

4. the grooves at the four ends of the cross shaft can be used for storing lubricating grease, so that the lubricating effect between the ends of the cross shaft and the connecting shell is effectively improved;

5. through making the stopper on the connection shell imbed the spacing inslot in the mounting hole, the relative universal joint fork of connection shell does not take place to rotate this moment, can prevent to lead to the connection shell to take place the condition of beating because of the fit clearance between connection shell and the mounting hole to avoid the connection shell to split because of beating.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a schematic structural view of example 2.

Reference numerals: 1. a universal joint yoke; 11. mounting holes; 12. a third chamfer; 13. a limiting groove; 2. a cross shaft; 21. an oil storage hole; 22. a first chamfer; 23. a second chamfer; 24. a groove; 3. a connecting shell; 31. a limiting block; 4. a clamp spring for the hole; 5. and (4) a nozzle tip.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: a universal joint cross, as shown in figure 1, comprises two universal joint forks 1 and a cross shaft 2. The universal joint fork 1 is provided with two mounting holes 11 for embedding the end parts of the cross shaft 2, the four end parts of the cross shaft 2 are all sleeved with a connecting shell 3 which is embedded into the mounting holes 11 of the universal joint fork 1 and is made of ceramic materials, and the inner wall of each mounting hole 11 is embedded with a hole clamp spring 4 which is abutted on the end face, far away from the cross shaft 2, of the connecting shell 3; the cross-shaped oil storage holes 21 respectively penetrating through the end faces of the four end portions of the cross shaft 2 are formed in the cross shaft 2, the middle of each oil storage hole 21 penetrates through one side of the cross shaft 2, the oil nozzle 5 used for opening or sealing the oil storage hole 21 is arranged in the middle of the cross shaft 2, and gaps are formed between the peripheral sides of the four end portions of the cross shaft 2 and the inner wall of the connecting shell 3.

As shown in fig. 1, a first chamfer 22 is provided at a boundary between an end surface of an end portion of the cross shaft 2 and the oil reservoir hole 21. And a second chamfer 23 is provided at the edge of the end face of the cross 2. Meanwhile, a third chamfer 12 is arranged at the edge of one end, far away from each other, of each of the two mounting holes 11 of the same universal joint fork 1, and the outer diameter of one end, close to the cross shaft 2, of the connecting shell 3 is smaller than the inner diameter of each mounting hole 11.

The implementation principle is as follows: the connecting shell 3 is made of ceramic materials, and the four end parts of the universal joint pin 2 are all embedded into the connecting shell 3, so that the friction force between the connecting shell 3 and the universal joint pin 2 can be reduced; meanwhile, by providing oil storage holes 21 respectively penetrating end faces of the four end portions of the cross 2 in the cross 2, the grease case stored in the oil storage holes 21 is made to flow to a gap between the end portion of the cross 2 and the inner wall of the connection case 3, and the frictional force between the connection case 3 and the cross 2 is further reduced.

A first chamfer 22 and a second chamfer 23 are arranged at the end part of the cross shaft 2, and the arrangement of the first chamfer 22 can accelerate the flow of the lubricating grease between the end surface of the end part of the cross shaft 2 and the inner wall of the connecting shell 3; the provision of the second chamfer 23 enables a portion of the grease to collect at the cavity formed between the second chamfer 23 and the inner wall of the coupling housing 3, thereby increasing the amount of grease stored in the gap between the end of the cross-shaft 2 and the inner wall of the coupling housing 3. The edge of one end, far away from each other, of each of the two mounting holes 11 of the same universal joint fork 1 is provided with a third chamfer 12, the outer diameter of one end, close to the cross shaft 2, of the connecting shell 3 is smaller than the inner diameter of the mounting hole 11, and the connecting shell 3 is convenient to be embedded into the mounting hole 11 and then sleeved on the end of the cross shaft 2.

Example 2: a universal joint pin, as shown in fig. 1 and 2, is different from embodiment 1 in that: a plurality of grooves 24 distributed in a circumferential array are formed in the peripheral sides of the four end parts of the cross shaft 2; the inner wall of the mounting hole 11 is provided with a limit groove 13, and the connecting shell 3 is integrally provided with a limit block 31 embedded in the limit groove 13 in the process that the connecting shell 3 is embedded in the mounting hole 11.

The implementation principle is as follows: the recesses 24 at the four ends of the cross 2 may be used to store grease, thereby effectively improving the lubrication between the ends of the cross 2 and the coupling housing 3. Through making stopper 31 on connecting shell 3 imbed the spacing groove 13 in the mounting hole 11, connecting shell 3 does not take place to rotate relative to universal joint fork 1 this moment, can prevent to lead to connecting shell 3 to take place the condition of beating because of the fit clearance between connecting shell 3 and the mounting hole 11 to avoid connecting shell 3 to split because of beating.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a cross universal joint, includes two universal joint forks (1), cross (2), its characterized in that: the universal joint fork (1) is provided with two mounting holes (11) for embedding the end parts of the cross shaft (2), the four end parts of the cross shaft (2) are respectively sleeved with a connecting shell (3) which is embedded into the mounting holes (11) of the universal joint fork (1) and is made of ceramic materials, and the inner wall of each mounting hole (11) is embedded with a hole clamp spring (4) which is abutted to the end face, far away from the cross shaft (2), of the connecting shell (3); be provided with in cross (2) and be cross and run through oil storage hole (21) of the terminal surface of four tip of cross (2) respectively, one side of cross (2) is run through at the middle part of oil storage hole (21), the middle part of cross (2) is provided with glib talker (5) that are used for opening or sealed oil storage hole (21), be formed with the clearance between the week side of four tip of cross (2) and the inner wall of connecting shell (3).

2. A universal joint pin joint as claimed in claim 1, wherein: and a first chamfer (22) is arranged at the junction of the end face of the end part of the cross shaft (2) and the oil storage hole (21).

3. A universal joint pin joint as claimed in claim 1, wherein: and a second chamfer (23) is arranged on the edge of the end face of the cross shaft (2).

4. A universal joint pin joint as claimed in claim 1, wherein: the connecting shell is characterized in that a third chamfer (12) is arranged at the edge of one end, far away from each other, of each of two mounting holes (11) of the universal joint fork (1), and the outer diameter of one end, close to the cross shaft (2), of the connecting shell (3) is smaller than the inner diameter of each mounting hole (11).

5. A universal joint pin joint as claimed in claim 1, wherein: the peripheral sides of the four end parts of the cross shaft (2) are provided with a plurality of grooves (24) distributed in a circumferential array.

6. A universal joint pin joint as claimed in claim 1, wherein: the inner wall of the mounting hole (11) is provided with a limiting groove (13), and the connecting shell (3) is provided with a limiting block (31) embedded in the limiting groove (13) in the process that the connecting shell (3) is embedded in the mounting hole (11).