Cross shaft universal joint assembly with double oil seals

Abstract

The utility model relates to the technical field of cross universal joints, and discloses a cross universal joint assembly with double oil seals, which comprises a cross, a safety valve is fixedly mounted on the outer surface of the front end of the cross, and connecting shafts are fixedly mounted at four ends of the cross; the sleeve is arranged on the outer surface of the connecting shaft in a sleeving mode, a plurality of roller pins are arranged on the inner wall of the sleeve, a bottom ring is arranged at the bottom end of the sleeve, a mounting ring is integrally mounted at the top end of the bottom ring, and the bottom ends of the roller pins are rotationally connected with the mounting ring. The bottom ends of the roller pins are supported through the mounting rings, the mounting rings are fixedly mounted in the mounting grooves in the bottom ends of the sleeves through the fixing bolts, when the inner roller pins are partially abraded, the fixing bolts can be taken down firstly to relieve limiting of the mounting rings, and then the roller pins are driven by the mounting rings to be completely pulled out of the sleeves; and each roller pin can be conveniently checked in detail, the worn roller pin can be conveniently replaced, and the maintenance cost is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to cross axle universal joint technical field, concretely is a cross axle universal joint assembly with double oil seal. BACKGROUND

[0002] The universal joint is a universal joint, which is a machine part for realizing variable angle power transmission and is used in positions where the direction of the transmission shaft needs to be changed. It is the "joint" component of the universal transmission device of the automobile driving system. The universal joint and the transmission shaft are combined, and are called a universal joint transmission device.

[0003] For example, a cross axle universal joint assembly disclosed in Chinese patent CN212839021U, comprising a cross axle and a shaft sleeve assembly, the shaft sleeve assembly is directly sleeved on each journal of the cross axle, the shaft sleeve assembly comprises a bearing, a needle bearing and an oil seal, characterized in that, the cross axle is integrally provided with a thickened oil cup, the inside of the cross axle is provided with a lubrication channel communicating the thickened oil cup and the shaft sleeve assembly. The oil seal comprises a skeleton and a sealing element, and the sealing element is provided with a plurality of tooth-shaped lips. The utility model has the advantages of good sealing property, anti-rust, good wear resistance, convenient maintenance, long service life and the like. In the installation and use process of the traditional cross axle universal joint assembly, the sleeve will rotate along one end of the connecting shaft, and a needle will be arranged to reduce the wear between the sleeve and the connecting shaft. However, after long-term use, the surface of part of the needles is prone to wear. Because the needle is installed on the inner wall of the sleeve and the volume of the needle is small, it is difficult to check the corresponding worn needle for timely repair. Usually, the entire sleeve assembly is replaced, which greatly increases the maintenance cost. Therefore, a cross axle universal joint assembly with double oil seals is proposed to solve the above problems. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the deficiencies in the prior art, the utility model provides a cross axle universal joint assembly with double oil seals, which has the advantages of low maintenance cost and solves the problem of high maintenance cost of the traditional one.

[0006] (II) Technical solutions

[0007] To achieve the above-mentioned purpose of low maintenance cost, the utility model provides the following technical solutions: a cross axle universal joint assembly with double oil seals, comprising:

[0008] The cross frame is provided with a safety valve on the outer surface of the front end, and connecting shafts are fixedly installed at the four ends of the cross frame.

[0009] The sleeve is sleeved on the outer surface of the connecting shaft, the inner wall of the sleeve is provided with a plurality of rolling pins, the bottom end of the sleeve is provided with a bottom ring, the top end of the bottom ring is integrally provided with a mounting ring, and the bottom end of the rolling pin is rotationally connected with the mounting ring.

[0010] Preferably, the outer surface of the connecting shaft is sleeved with a positioning ring, and the bottom end of the bottom ring matches the positioning ring, and during the sleeving process, the bottom end of the bottom ring is inserted into the positioning ring.

[0011] Preferably, the outer surface of the connecting part of the bottom ring and the positioning ring is sleeved with a double-layer oil seal, the outer layer prevents dust and the inner layer prevents oil, which effectively prevents particles from entering during use and increases the use effect.

[0012] Preferably, the bottom end of the sleeve is provided with a mounting groove matched with the mounting ring, and the mounting ring is embedded in the inside of the mounting groove, the outer surface of the mounting ring is provided with a bolt groove, a fixing bolt is inserted into the bolt groove, and the mounting ring is fixedly connected with the sleeve through the fixing bolt, when the internal rolling pin is partially worn, the fixing bolt can be removed to release the limiting of the mounting ring.

[0013] Preferably, the top end of the rolling pin is inserted into the top end of the inner wall of the sleeve, and the top end of the rolling pin is rotationally connected with the sleeve, the sleeve rotates along the connecting shaft, and at the same time drives the rolling pin of the inner wall to roll, thereby reducing the wear between the sleeve and the connecting shaft.

[0014] (Three) beneficial effects

[0015] Compared with the prior art, the utility model provides a cross shaft universal joint assembly with double oil seals, which has the following beneficial effects:

[0016] By setting the bottom end of the rolling pin to be supported by the mounting ring, the mounting ring is fixedly installed in the mounting groove at the bottom end of the sleeve through the fixing bolt, when the internal rolling pin is partially worn, the fixing bolt can be removed to release the limiting of the mounting ring, then the rolling pin is pulled out from the sleeve through the mounting ring, the rolling pin is conveniently checked in detail, the worn rolling pin is conveniently replaced, and the maintenance cost is greatly reduced. DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is an overall structure explosion diagram of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the sleeve of the utility model;

[0020] Figure 4 It is an explosion structure diagram of the sleeve of the utility model.

[0021] In the figure: 1, cross; 11, safety valve; 12, connecting shaft; 13, positioning ring; 14, double oil seal; 2, sleeve; 21, bottom ring; 22, needle roller; 23, mounting ring; 24, fixing bolt; 25, mounting groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1-4 The utility model provides the following technical scheme: a cross shaft universal joint assembly with double oil seals, including cross 1, the front end outer surface of cross 1 is fixedly installed with safety valve 11, and the four ends of cross 1 are fixedly installed with connecting shaft 12;

[0024] In the example, the outer surface of connecting shaft 12 is sleeved with positioning ring 13, and the bottom end of bottom ring 21 matches positioning ring 13, in the sleeving process, bottom ring 21 is inserted into positioning ring 13, the outer surface of the connecting place of bottom ring 21 and positioning ring 13 is sleeved with double oil seal 14, the outer layer prevents dust and the inner layer seals oil, effectively prevents particulate impurities from entering during use, and increases the use effect;

[0025] In the example, the sleeve 2 is sleeved on the outer surface of the connecting shaft 12, the inner wall of the sleeve 2 is provided with a plurality of needle rollers 22, the bottom end of the sleeve 2 is provided with a bottom ring 21, the top end of the bottom ring 21 is integrally provided with a mounting ring 23, and the bottom end of the needle roller 22 is rotatably connected with the mounting ring 23, the top end of the needle roller 22 is inserted into the inner wall top end of the sleeve 2, and the top end of the needle roller 22 is rotatably connected with the sleeve 2, the sleeve 2 rotates along the connecting shaft 12, and at the same time drives the needle roller 22 in the inner wall to roll, reducing the wear between the sleeve 2 and the connecting shaft 12.

[0026] The bottom end of the sleeve 2 is provided with a mounting groove 25 matched with the mounting ring 23, and the mounting ring 23 is embedded in the inside of the mounting groove 25, the outer surface of the mounting ring 23 is provided with a bolt groove, the bolt groove is inserted with a fixing bolt 24, and the mounting ring 23 is fixedly connected with the sleeve 2 through the fixing bolt 24, when the needle roller 22 inside is partially worn, the fixing bolt 24 can be removed first to release the limiting of the mounting ring 23.

[0027] The working principle of the embodiment is as follows:

[0028] When installing, the sleeve 2 on the connecting shaft 12 is removed first, the shaft fork is sleeved on the connecting shaft 12 at both ends of the cross 1, then the sleeve is sleeved on the connecting shaft 12, during the sleeving process, the bottom ring 21 at the bottom end is inserted into the positioning ring 13, at the same time, the double-layer oil seal 14 is sleeved at the connecting position, the outer layer prevents dust and the inner layer seals oil, which effectively prevents particles from entering and increases the use effect during use;

[0029] In use, the sleeve 2 rotates along the connecting shaft 12, and the rolling pin 22 on the inner wall rolls, reducing the wear between the sleeve 2 and the connecting shaft 12, when the rolling pin 22 inside is partially worn, the fixing bolt 24 can be removed first to release the limiting of the mounting ring 23, then the rolling pin 22 is pulled out from the sleeve 2 through the mounting ring 23, facilitating detailed inspection of each rolling pin 22 and replacement of the worn rolling pin 22, greatly reducing the maintenance cost.

[0030] It should be noted that in this text, relational terms such as first and second are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article, or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article, or device including the element.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A universal joint assembly with double oil seals, characterized in that: include: A cross (1) is fixedly mounted with a safety valve (11) on the outer surface of the front end of the cross (1). Connecting shafts (12) are fixedly mounted at the four ends of the cross (1). A sleeve (2) is fitted on the outer surface of the connecting shaft (12). The inner wall of the sleeve (2) is provided with several needle rollers (22). The bottom end of the sleeve (2) is provided with a bottom ring (21). The top end of the bottom ring (21) is integrally installed with an installation ring (23), and the bottom end of the needle rollers (22) is rotatably connected to the installation ring (23).

2. The universal joint assembly with double oil seals according to claim 1, characterized in that: The outer surface of the connecting shaft (12) is fitted with a positioning ring (13), and the bottom end of the bottom ring (21) matches the positioning ring (13).

3. The universal joint assembly with double oil seals according to claim 1, characterized in that: A double-layer oil seal (14) is fitted on the outer surface of the connection between the bottom ring (21) and the positioning ring (13).

4. A universal joint assembly with double oil seals according to claim 1, characterized in that: The bottom end of the sleeve (2) is provided with a mounting groove (25) that matches the mounting ring (23), and the mounting ring (23) is embedded inside the mounting groove (25).

5. A universal joint assembly with double oil seals according to claim 4, characterized in that: The outer surface of the mounting ring (23) is provided with a bolt groove, and a fixing bolt (24) is inserted into the bolt groove. The mounting ring (23) is fixedly connected to the sleeve (2) by the fixing bolt (24).

6. A universal joint assembly with double oil seals according to claim 1, characterized in that: The top end of the needle roller (22) is inserted into the top end of the inner wall of the sleeve (2), and the top end of the needle roller (22) is rotatably connected to the sleeve (2).

Images