CN213946138U

CN213946138U - Positioning device of double-yoke universal joint

Info

Publication number: CN213946138U
Application number: CN202022152396.5U
Authority: CN
Inventors: 牛杰; 姜志恒; 董小忠; 高天芬
Original assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Current assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-08-13
Anticipated expiration: 2030-09-27

Abstract

The invention discloses a positioning device of a duplex fork universal joint, which mainly comprises a positioning device main body and the like, wherein a square groove is designed in the middle of the positioning device main body, two V-shaped grooves are respectively arranged on two sides of the square groove, a duplex fork lug hole of a duplex fork is erected on the V-shaped groove, a duplex fork ring part of the duplex fork is positioned in the square groove, and a universal joint assembly is arranged in the duplex fork lug hole of the duplex fork. According to the invention, by changing the assembly scheme of the universal joint and the transmission shaft and adding the positioning device of the duplex fork, the condition that the needle is inverted during the assembly process is effectively avoided, the assembly quality is improved, and the assembly efficiency is improved; through the matching of the positioning device assembly method, stable assembly and simple and convenient operation can be achieved, the stability of needle roller assembly is improved, the cost is saved, and the efficiency is improved.

Description

Positioning device of double-yoke universal joint

Technical Field

The utility model relates to a field of duplex fork universal joint, concretely relates to positioner of duplex fork universal joint.

Background

The existing assembly of the universal joint of the duplex fork generally comprises the steps of firstly assembling the universal joint and the spline shaft fork, then assembling the duplex fork and the universal joint, dismounting an outer ring bearing of the universal joint before assembling the universal joint, the spline shaft fork and the duplex fork, and sequentially pressing the cross shaft, the spline shaft fork and the outer ring by a pressing machine to complete the assembly of the universal joint and a transmission shaft.

Because the pair of bearings of the universal joint and the cross shaft are assembled with the spline shaft yoke, and the cross shaft can rotate in the bearings in the circumferential direction, the cross shaft cannot be positioned in the assembling process, and the needle reversing condition is easy to occur when the duplex yoke is installed. The reverse needle condition caused by the installation of the double fork is caused by the appearance of the double fork. Because the duplex fork ear hole is less than middle part ring type structure, when the pressure equipment machine pushed down perpendicularly, the ear hole can't keep vertical location because of unsettled, in case the duplex fork ear hole is because of pushing down partially, the major skew or alternately takes place for the central line of cross axle journal and bearing central line, leads to the two to take place to interfere, and then the condition of falling the needle appears, has seriously influenced duplex fork universal joint assembly efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide a positioner of double yoke universal joint.

The purpose of the utility model is accomplished through following technical scheme: the positioning device of the duplex fork universal joint mainly comprises a positioning device main body, a duplex fork, a universal joint assembly, V-shaped grooves, square grooves, duplex fork lug holes and duplex fork ring portions, wherein the square grooves are designed in the middle of the positioning device main body, the V-shaped grooves are respectively arranged on two sides of each square groove, the duplex fork lug holes of the duplex fork are erected on the V-shaped grooves, the duplex fork ring portions of the duplex fork are located in the square grooves, and the universal joint assembly is installed in the duplex fork lug holes of the duplex fork.

The universal joint assembly is composed of a cross shaft, a universal joint bearing, a universal joint outer ring, a rolling needle and an oil seal.

The V-shaped groove accurately positions the direction between the holes of the duplex fork lugs, and the square groove accurately positions the radial direction of the holes of the duplex fork lugs.

The utility model has the advantages that: the utility model effectively avoids the condition of needle falling during the assembly process, improves the assembly quality and improves the assembly efficiency by changing the assembly scheme of the universal joint and the transmission shaft and increasing the positioning device of the duplex fork; through the matching of the positioning device and the assembling method, stable assembly and simple and convenient operation can be achieved, the stability of needle roller assembly is improved, the cost is saved, and the efficiency is improved; the assembly method of the duplex fork universal joint is standardized, the operation standard in the assembly process of the universal joint and the duplex fork is clarified in detail, the reliability and controllability of the assembly quality are improved, and a basis is provided for realizing the automation and standardization of the assembly.

Drawings

Fig. 1 is a schematic view of the main structure of the positioning device of the present invention.

Fig. 2 is a schematic diagram of the dual fork structure of the present invention.

Fig. 3 is a schematic diagram of the structure of the universal joint assembly of the present invention.

Fig. 4 is a schematic view of the assembly process of the present invention.

Fig. 5 is the pre-press mounting schematic diagram of the universal joint bearing of the present invention.

Fig. 6 is a schematic diagram of the movement of the cross shaft according to the present invention.

Fig. 7 is a schematic view of the universal joint bearing of the present invention.

Fig. 8 is a schematic view of the assembly of the two end-face universal joint bearing of the present invention.

Fig. 9 is an assembly view of the dual yoke earhole of the present invention.

Description of reference numerals: the positioning device comprises a positioning device body 1, a duplex fork 2, a universal joint assembly 3, a V-shaped groove 11, a square groove 12, a duplex fork lug hole 21, a duplex fork ring part 22, a cross shaft 31, a universal joint bearing 32, a universal joint outer ring 321, a roller pin 322 and an oil seal 323.

Detailed Description

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

as shown in the attached drawings, the positioning device of the duplex fork universal joint mainly comprises a positioning device main body 1, a duplex fork 2, a universal joint assembly 3, a V-shaped groove 11, a square groove 12, duplex fork lug holes 21 and a duplex fork ring part 22, wherein the middle part of the positioning device main body 1 is designed with the square groove 12, two V-shaped grooves 11 are respectively arranged on two sides of the square groove 12, the duplex fork lug holes 21 of the duplex fork 2 are erected on the V-shaped groove 11, the duplex fork ring part 22 of the duplex fork 2 is positioned in the square groove 12, the V-shaped groove 11 accurately positions the inter-hole direction of the duplex fork lug holes 21, and the square groove 12 accurately positions the radial direction of the duplex fork lug holes 21. The universal joint assembly 3 is arranged in a duplex fork ear hole 21 of the duplex fork 2. The universal joint assembly 3 is composed of a cross shaft 31, a universal joint bearing 32, a universal joint outer ring 321, a needle roller 322 and an oil seal 323.

The efficient assembly method of the double-yoke universal joint mainly comprises the following steps:

1) assembly preparation: preparing a tooling platform, horizontally placing the positioning device main body 1, fixing the double yoke 2 on the positioning device main body 1, and preparing a cross shaft 31 and a universal joint bearing 32 which are assembled;

2) the universal joint bearing 32 is subjected to a small amount of pre-pressing, and the pre-pressing plays a role in fixing the assembling position of the universal joint bearing 32, so that the rolling needles 322 in the universal joint bearing 32 cannot fall due to shaking in the assembling process, as shown in fig. 5;

3) an assembler holds the duplex yoke part 22 with one hand and holds the cross shaft 31 with the other hand, and stably moves the cross shaft 31 vertically upwards;

4) the cross 31 moves into the universal joint bearing 32, so that the journal of the cross 31 is in contact with the roller pin 322, and the cross moves upwards smoothly for a section, as shown in fig. 6;

5) after the cross 31 is in contact with the roller pin 322 for a certain distance, the first universal joint bearing 32 is pressed to the bottom by the pressing device, as shown in fig. 7;

6) overturning the dual yoke 2, and repeating the steps 2 to 5 to complete the assembly of the universal joint bearings 32 on the two end surfaces of the universal joint assembly 3, as shown in fig. 8;

7) the universal joint assembly 3 is assembled into the other side yoke lug hole 21 of the yoke 2 in the same manner as shown in fig. 9.

The assembly process requires stable operation, and the assembly quality of each step is ensured.

It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.

Claims

1. A positioner of two yoke universal joints which characterized in that: the double-fork positioning device mainly comprises a positioning device main body (1), a double-fork (2), a universal joint assembly (3), a V-shaped groove (11), a square groove (12), double-fork lug holes (21) and a double-fork ring portion (22), wherein the middle of the positioning device main body (1) is provided with the square groove (12), the two sides of the square groove (12) are respectively provided with the V-shaped groove (11), the double-fork lug holes (21) of the double-fork (2) are erected on the V-shaped groove (11), the double-fork ring portion (22) of the double-fork (2) is positioned in the square groove (12), and the universal joint assembly (3) is arranged in the double-fork lug holes (21) of the double-fork (2).

2. The positioning device of a tandem universal joint according to claim 1, wherein: the universal joint assembly (3) is composed of a cross shaft (31), a universal joint bearing (32), a universal joint outer ring (321), a roller pin (322) and an oil seal (323).

3. The positioning device of a tandem universal joint according to claim 1, wherein: the V-shaped groove (11) accurately positions the inter-hole direction of the duplex fork lug holes (21), and the square groove (12) accurately positions the radial direction of the duplex fork lug holes (21).