CN217784055U

CN217784055U - Long-life universal joint cross

Info

Publication number: CN217784055U
Application number: CN202221372411.XU
Authority: CN
Inventors: 贺增; 范利福
Original assignee: Zhejiang Liqun Auto Parts Manufacturing Co ltd
Current assignee: Zhejiang Liqun Auto Parts Manufacturing Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-11-11
Anticipated expiration: 2032-06-02

Abstract

The utility model discloses a long-life universal joint cross, including cross, oil blanket, kingpin, axle sleeve and lubricated ring, the cross has a plurality of journals, a plurality of journal departments are equipped with the axle sleeve, journal end face and axle sleeve end face contact, the axle sleeve end face is equipped with lubricated ring, lubricated ring one side is equipped with the kingpin, the kingpin evenly distributed is in the axle sleeve, kingpin one side is equipped with the oil blanket, the oil blanket includes support and sealing washer, sealing washer and support gomphosis, support embedding axle sleeve opening part, through increase lubricated ring at axle sleeve end face and kingpin end face, delay the friction between kingpin end face and the axle sleeve end face to the life of universal joint cross has been prolonged; the cavity formed by the sealing flaps seals the shaft sleeve, so that the lubricating medium inside the shaft sleeve is prevented from leaking, the inside of the shaft sleeve is in a state of sufficient lubrication of the lubricating medium, and the universal joint cross cannot be influenced by the dry friction of the rolling needles when the universal joint cross operates.

Description

Long-life universal joint cross

Technical Field

The utility model relates to the technical field of transmission, especially, relate to a long-life universal joint cross.

Background

The universal joint cross shaft is a universal joint, is a machine part for realizing variable-angle power transmission, is used for changing the position of a transmission axis direction, and is a joint part of a universal transmission device of an automobile driving system; the universal joint cross shaft is combined with a transmission shaft and is called a universal joint cross shaft transmission device, the commonly used universal joint cross shaft transmission device generally comprises a cross shaft, an oil seal, a roller pin and a shaft sleeve, the end part of the shaft sleeve is directly contacted with the end part of the roller pin in the conventional assembly mode, a gap exists between the end surface of the roller pin and the end surface of the shaft sleeve due to the existence of processing errors, the contact is uneven, the friction between the end surface of the roller pin and the end surface of the shaft sleeve can be caused, the movement resistance of the roller pin is increased, and the service life of the universal joint cross shaft can be influenced after the universal joint cross shaft runs for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a long-life universal joint cross has advantages such as prevent that lubricating medium from revealing, rotate in a flexible way, long service life, structural strength height to current universal joint cross.

In order to achieve the above object, the utility model discloses a technical scheme be: a universal joint cross shaft with a long service life comprises a cross shaft, an oil seal, rolling needles, a shaft sleeve and a lubricating ring, wherein the cross shaft is provided with a plurality of shaft necks, the shaft necks are provided with the shaft sleeves, the end faces of the shaft necks are in contact with the end faces of the shaft sleeves, the end faces of the shaft sleeves are provided with the lubricating ring, one side of the lubricating ring is provided with the rolling needles which are uniformly distributed in the shaft sleeves, one side of each rolling needle is provided with the oil seal, the lubricating ring is used for preventing friction between the end face of the rolling needle and the end face of the shaft sleeve, the lubricating ring is made of a non-metal material and comprises a support and a sealing ring, the sealing ring is embedded into the opening of the shaft sleeve, the sealing ring is provided with a first sealing flap, a second sealing flap and a third sealing flap, the included angle between the second sealing flap and the third sealing flap is 40 degrees, the included angle between the second sealing flap and the axis of the sealing ring is 40-50 degrees, the first sealing flap and the second sealing flap are parallel, and the first sealing flap extends out of the support;

preferably, the included angle between the shaft journal and the axis of the adjacent shaft journal is 90 degrees;

further preferably, the journal has a seal portion with a surface roughness Ra ≦ 0.8 μm;

preferably, a lubricating medium is arranged at the contact position of the lubricating ring and the rolling needle, and the lubricating medium is in a non-fluid state at normal temperature;

preferably, the contact part, the second sealing flap and the third sealing flap in the shaft neck form a first cavity, the contact part, the first sealing flap and the second sealing flap in the shaft neck form a second cavity, the first sealing flap prevents external impurities from entering the shaft sleeve, the first cavity is used for storing a lubricating medium to lubricate the shaft neck, and the second cavity is used for preventing the lubricating medium from leaking;

the utility model has the advantages that: 1. lubricating rings are additionally arranged on the end surface of the shaft sleeve and the end surface of the roller pin, so that the friction between the end surface of the roller pin and the end surface of the shaft sleeve cannot be caused when the universal joint cross shaft runs, and the service life of the universal joint cross shaft is prolonged; 2. the cavity formed by the sealing flaps seals the shaft sleeve, so that leakage of a lubricating medium in the shaft sleeve is prevented, the inside of the shaft sleeve is in a fully-lubricated state by the lubricating medium, and the universal joint cross shaft cannot be influenced by dry friction of the rolling needles when the universal joint cross shaft runs.

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 is a sectional view of the shaft sleeve of the present invention;

fig. 4 is a cross-sectional view of the oil seal of the present invention;

fig. 5 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.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted", "connected", "provided", "arranged" or "provided" should be interpreted broadly, for example, as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 5, an embodiment of the present invention includes:

a long-life universal joint cross shaft comprises a cross shaft 1, an oil seal 2, a roller pin 3, a shaft sleeve 4 and a lubricating ring 5, wherein the cross shaft 1 is provided with a plurality of shaft necks 11, the shaft sleeve 4 is arranged at the positions of the shaft necks 11, the end surface of the shaft neck 11 is in contact with the end surface of the shaft sleeve 4, the lubricating ring 5 is arranged on the end surface of the shaft sleeve 4, the roller pin 3 is arranged on one side of the lubricating ring 5, the roller pin 3 is uniformly distributed in the shaft sleeve 4, the oil seal 2 is arranged on one side of the roller pin 3, the lubricating ring 5 is used for preventing friction between the end surface of the roller pin 3 and the end surface of the shaft sleeve 4, the lubricating ring 5 is made of a non-metal material, the oil seal 2 comprises a support 21 and a seal 22, the seal 22 is embedded into the support 21, the support 21 is embedded into an opening of the shaft sleeve 4, the seal 22 is provided with a first seal flap 221, a second seal flap 222 and a third seal flap 223, the included angle between the second seal flap 222 and the seal flap 223 is 40-50 degrees, the first seal flap 221 and the second seal flap 221 are parallel to the outer side, and the support 21 is in a state;

the included angle between the shaft neck 11 and the axis of the adjacent shaft neck 11 is 90 degrees, and the cross shaft 1 with the included angle of 90 degrees has higher structural strength;

the shaft neck 11 is provided with a sealing part 111, the surface roughness Ra of the sealing part 111 is less than or equal to 0.8 mu m, after the shaft sleeve 4 is installed, the sealing ring 22 is tightly attached to the sealing part 111, and the smooth sealing part 111 can achieve a better sealing effect;

a lubricating medium 51 is arranged at the contact position of the lubricating ring 5 and the roller pin 3, the lubricating medium 51 is in a non-fluid state at normal temperature, the roller pin 3 can be prevented from scattering when the shaft sleeve 4 is mounted at the position of the shaft neck 11 by the aid of the lubricating medium 51 in the non-fluid state, and after the universal joint cross shaft runs, the lubricating medium 51 is driven by the roller pin 3 to fully lubricate parts in the shaft sleeve 4;

the contact part 111, the second sealing flap 222 and the third sealing flap 223 in the journal 11 form a first cavity 224, the contact part 111, the first sealing flap 221 and the second sealing flap 222 in the journal 11 form a second cavity 225, the first sealing flap 221 prevents external impurities from entering the shaft sleeve 4, the first cavity 224 is used for storing lubricating medium 51 to lubricate the journal 11, and the second cavity 225 is used for preventing the lubricating medium 51 from leaking;

the above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The universal joint cross shaft with the long service life is characterized by comprising a cross shaft, an oil seal, rolling needles, a shaft sleeve and a lubricating ring, wherein the cross shaft is provided with a plurality of shaft necks, the shaft necks are provided with the shaft sleeves, the end faces of the shaft necks are in contact with the end faces of the shaft sleeve, the lubricating ring is arranged on the end face of the shaft sleeve, the rolling needles are arranged on one side of the lubricating ring and are uniformly distributed in the shaft sleeve, the oil seal is arranged on one side of the rolling needles, the oil seal comprises a support and a sealing ring, the sealing ring is embedded into an opening of the shaft sleeve, the sealing ring is provided with a first sealing flap, a second sealing flap and a third sealing flap, an included angle between the second sealing flap and the third sealing flap is 40 degrees, the included angle between the second sealing flap and the axis of the sealing ring is 40-50 degrees, the first sealing flap and the second sealing flap are parallel, and the first sealing flap is in a state of extending out of the support to the outside.

2. The long life universal joint cross of claim 1, wherein said journals are angled 90 degrees from the axis of an adjacent journal.

3. The long life universal joint cross of claim 2, wherein said journal has a seal with a surface roughness Ra 0.8 μm or less.

4. The long life universal joint cross as claimed in claim 1, wherein a lubricating medium is provided at a contact position of said lubricating ring and said needle roller, and said lubricating medium is in a non-fluid state at normal temperature.

5. The long life universal joint cross of claim 1, wherein said journal center contact, second seal lobe and third seal lobe form a first cavity and said journal center contact, first seal lobe and second seal lobe form a second cavity.

6. The long life universal joint cross of claim 1, wherein said lube ring is non-metallic.