CN217682909U

CN217682909U - Reinforced cross shaft assembly

Info

Publication number: CN217682909U
Application number: CN202221258790.XU
Authority: CN
Inventors: 贺增; 张海波
Original assignee: Zhejiang Liqun Auto Parts Manufacturing Co ltd
Current assignee: Zhejiang Liqun Auto Parts Manufacturing Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-10-28
Anticipated expiration: 2032-05-24

Abstract

The utility model discloses a strenghthened type cross axle assembly, including cross axle and axle sleeve assembly, the cross axle has a plurality of journals, the journal is 90 degrees with the axis contained angle of adjacent journal, journal one end has the sealing, the cross axle journal is equipped with the axle sleeve assembly, the axle sleeve assembly includes oil blanket, kingpin and axle sleeve, kingpin evenly distributed is at the axle sleeve inner wall, oil blanket and axle sleeve gomphosis, the axle sleeve has spacing groove, contact surface, oil storage tank and spacing boss, stores lubricating medium through a plurality of oil storage tanks of axle sleeve terminal surface to can not take place the not enough condition of lubrication under the state that the cross axle used for a long time, reached and prevented the wearing and tearing that the kingpin from taking place because of the lubrication is not enough, pour into lubricating medium into in a plurality of seal chamber when installing the sealing washer, make the lubricating medium among a plurality of seal chamber lubricate and seal the journal contact site, thereby improved the sealed effect of oil blanket, reached extension assembly life's purpose.

Description

Reinforced cross shaft assembly

Technical Field

The utility model relates to a transmission technical field especially relates to a strenghthened type cross axle assembly.

Background

In an automobile transmission system and other systems, in order to realize power transmission between rotating shafts with intersected axes or frequently-changed relative positions, a universal transmission device is required to be adopted, a cross shaft is an indispensable part in the universal transmission device, a lubricating medium is usually filled in a cross shaft sleeve when the existing cross shaft is installed, the lubricating medium is evaporated or leaked from an oil seal due to long-time operation of the universal joint during long-time use of the universal joint, so that dry friction between a roller pin and the sleeve is caused, abrasion is generated after long-time operation to cause position deviation of the cross shaft, the rotating speed is unstable, and the cross shaft is broken seriously, so that the lubrication treatment of the cross shaft is necessary.

SUMMERY OF THE UTILITY MODEL

To current universal transmission's not enough, the utility model aims at providing a strenghthened type cross axle assembly has advantages such as the bulk strength is high, the wearability is good and the transmission is stable.

In order to achieve the above purpose, the utility model adopts a technical proposal that: a reinforced cross shaft assembly comprises a cross shaft and a shaft sleeve assembly, wherein the cross shaft is provided with a plurality of shaft necks, the included angle between each shaft neck and the axis of the adjacent shaft neck is 90 degrees, one end of each shaft neck is provided with a sealing part, the surface of each sealing part is smooth, the shaft sleeve assembly comprises an oil seal, roller pins and a shaft sleeve, the roller pins are uniformly distributed on the inner wall of the shaft sleeve and are embedded with the shaft sleeve, and the oil seal is used for limiting the axial movement of the roller pins;

the sleeve is provided with a limiting groove, a contact surface, oil storage grooves and a limiting boss, the contact surface is arranged on the inner wall of the sleeve, the rolling needles are uniformly distributed on the contact surface, a rolling gap is arranged between the contact surface and the rolling needles, lubricating media are arranged in the rolling gap, the limiting groove is arranged on the end surface of the sleeve and is used for preventing the rolling needles from falling off from the sleeve after installation, the limiting boss is arranged at the opening of the sleeve and is used for limiting the position where the oil seal is embedded, the end surface of the sleeve is provided with a plurality of oil storage grooves for storing the lubricating media, and air is isolated through the lubricating media in the sleeve, so that the oxidation of parts in the sleeve is prevented;

preferably, the oil seal comprises a support and a seal ring, the seal ring is embedded with the support, the seal ring is provided with a first seal flap, a second seal flap and a third seal flap, a first seal cavity is formed when the first seal flap and the second seal flap are in contact with the journal sealing part, a second seal cavity is formed when the second seal flap and the third seal flap are in contact with the journal sealing part, and the first seal cavity and the second seal cavity can store lubricating medium grease, so that the sealing part in the journal can be lubricated and sealed better;

further preferably, a rotating gap is formed between the needle roller and the shaft neck, a lubricating medium is arranged in the rotating gap, and the lubricating medium is used for delaying the wear speed of the needle roller;

further preferably, the shaft sleeve assembly is arranged at a shaft neck of the cross shaft, and the shaft sleeve assembly can flexibly rotate after being arranged;

preferably, the oil storage tank is less than 0.3mm in depth.

The utility model has the advantages that: 1. the lubricating medium is stored in the plurality of oil storage grooves in the end face of the shaft sleeve, so that the condition of insufficient lubrication cannot occur in the long-time use state of the cross shaft, and the abrasion of the roller pins due to insufficient lubrication is prevented; 2. lubricating media are injected into the plurality of seal cavities when the seal rings are installed, so that the lubricating media in the plurality of seal cavities lubricate and seal the contact part of the shaft neck, the sealing effect of the oil seal is improved, and the purpose of prolonging the service life of the assembly is achieved.

Drawings

FIG. 1 is a view showing the structure of the present invention;

FIG. 2 is a cross axle structure view of the present invention;

fig. 3 isbase:Sub>A sectional view taken along the linebase:Sub>A-base:Sub>A of fig. 2 according to the present invention;

FIG. 4 is a sectional view of the shaft sleeve assembly of the present invention;

fig. 5 is a cross-sectional view of the oil seal of the present invention;

fig. 6 is a sectional view of the shaft sleeve of the present invention;

FIG. 7 is a view of the present invention taken along the line C in FIG. 6;

fig. 8 is a partial cross-sectional view taken along line B-B of fig. 7 in accordance with the present invention;

fig. 9 is a partially enlarged view of the region I in fig. 1 according to the present invention.

Detailed Description

The following description of the preferred embodiments of the present invention will be provided with reference to the accompanying drawings, so that the advantages and features of the present invention can be easily understood by those skilled in the art, and the scope of the present invention can be clearly and clearly defined.

Referring to fig. 1 to 9, an embodiment of the present invention includes:

a reinforced cross shaft assembly comprises a cross shaft 1 and a shaft sleeve assembly 2, wherein the cross shaft 1 is provided with a plurality of shaft necks 11, the included angle between each shaft neck 11 and the axis of the adjacent shaft neck 11 is 90 degrees, one end of each shaft neck 11 is provided with a sealing part 111, the surface of each sealing part 111 is smooth, the shaft sleeve assembly 2 comprises an oil seal 21, roller pins 22 and a shaft sleeve 23, the roller pins 22 are uniformly distributed on the inner wall of the shaft sleeve 23, the oil seal 21 is embedded with the shaft sleeve 23, and the oil seal 21 is used for limiting the axial movement of the roller pins 22;

the shaft sleeve 23 is provided with a limiting groove 231, a contact surface 232, oil storage grooves 233 and a limiting boss 234, the contact surface 232 is arranged on the inner wall of the shaft sleeve 23, the needle rollers 22 are uniformly distributed on the contact surface 232, a rolling gap is arranged between the contact surface 232 and the needle rollers 22, a lubricating medium is arranged in the rolling gap, the limiting groove 231 is arranged on the end surface of the shaft sleeve 23, the limiting groove 231 is used for preventing the needle rollers 22 from falling off from the shaft sleeve 23 after installation, the limiting boss 234 is arranged at the opening of the shaft sleeve 23 and used for limiting the position where the oil seal 21 is embedded, the end surface of the shaft sleeve 23 is provided with a plurality of oil storage grooves 233 for storing the lubricating medium, and air is isolated by the lubricating medium in the shaft sleeve 23, so that oxidation of parts inside the shaft sleeve 23 is prevented;

the oil seal 21 comprises a bracket 211 and a seal ring 212, the seal ring 212 is embedded with the bracket 211, the seal ring 212 is provided with a first seal flap 2121, a second seal flap 2122 and a third seal flap 2123, the first seal flap 2121 and the second seal flap 2122 form a first seal cavity 2124 when contacting with the journal sealing part, the second seal flap 2122 and the third seal flap 2123 form a second seal cavity 2125 when contacting with the journal sealing part, and the first seal cavity 2124 and the second seal cavity 2125 can store lubricating medium grease, so that the seal part 111 in the journal 11 can be better lubricated and sealed;

a rotating gap is formed between the roller pin 22 and the journal 11, and a lubricating medium is arranged in the rotating gap and used for delaying the abrasion speed of the roller pin 22;

the shaft sleeve assembly 2 is arranged at a shaft neck 11 of the cross shaft 1, and the shaft sleeve assembly 2 can flexibly rotate after being arranged;

the depth of the oil storage tank 233 is less than 0.3mm;

the above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.

Claims

1. A reinforced cross shaft assembly comprises a cross shaft and a shaft sleeve assembly, and is characterized in that the cross shaft is provided with a plurality of shaft necks, the included angle between each shaft neck and the axis of the adjacent shaft neck is 90 degrees, one end of each shaft neck is provided with a sealing part, the surface of each sealing part is smooth, the shaft sleeve assembly is arranged on each cross shaft neck and comprises an oil seal, roller pins and a shaft sleeve, the roller pins are uniformly distributed on the inner wall of the shaft sleeve, and the oil seal is embedded with the shaft sleeve;

the sleeve is provided with a limiting groove, a contact surface, oil storage grooves and a limiting boss, the contact surface is arranged on the inner wall of the sleeve, the rolling needles are uniformly distributed on the contact surface, a rolling gap is arranged between the contact surface and the rolling needles, lubricating media are arranged in the rolling gap, the limiting groove is arranged on the end face of the sleeve, the limiting boss is arranged at the opening of the sleeve, and the oil storage grooves are formed in the end face of the sleeve.

2. The enhanced cross shaft assembly of claim 1, wherein the oil seal comprises a support and a seal ring, the seal ring is embedded in the support, the seal ring has a first seal flap, a second seal flap and a third seal flap, the first seal flap and the second seal flap form a first seal cavity when contacting the journal seal, and the second seal flap and the third seal flap form a second seal cavity when contacting the journal seal.

3. The enhanced cross shaft assembly as recited in any one of claims 1 to 2, wherein a rotating clearance is provided between the needle roller and the journal, and a lubricating medium is provided in the rotating clearance and is used for delaying the wear rate of the needle roller.

4. The reinforced cross shaft assembly of any one of claims 1 to 2, wherein the sleeve assembly is mounted at a journal of the cross shaft, and the sleeve assembly is capable of rotating flexibly after being mounted.

5. The reinforced cross shaft assembly of claim 1, wherein the sump has a depth of less than 0.3mm.