CN210510010U

CN210510010U - Detachable universal joint

Info

Publication number: CN210510010U
Application number: CN201920938417.0U
Authority: CN
Inventors: 王欣强
Original assignee: Chongqing Mingzhu Mechanical & Electric Co ltd
Current assignee: Chongqing Mingzhu Mechanical & Electric Co ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-05-12
Anticipated expiration: 2029-06-20

Abstract

The utility model discloses a detachable universal joint, including cross package and a pair of single fork, the cross package is including cross connecting block, first round pin axle and second round pin axle, it has the cross pinhole by first pinhole and the perpendicular setting of second pinhole to open in the cross connecting block, and the central line dislocation set of this first pinhole and second pinhole, first round pin axle is worn to establish in the first pinhole, the middle part of this first round pin axle is opened has the edge the spacing groove that second pinhole central line direction set up, the second round pin axle is worn to establish in the second pinhole, and the lateral wall at this second round pin axle middle part with the groove surface laminating of spacing groove, the tip of first round pin axle and second round pin axle is stretched out respectively first pinhole and second pinhole and respectively with corresponding single fork shaft hole normal running fit. Compared with the prior universal joint with the same size, the cross-shaped bag of the detachable universal joint can bear larger torque and axial force; the self weight is light; the swing angle can not exceed 5 degrees, and the assembly and disassembly are convenient.

Description

Detachable universal joint

Technical Field

The utility model belongs to the technical field of the universal joint, specific theory relates to a detachable universal joint.

Background

The traditional cross universal joint consists of a cross bag and a single fork, wherein the cross bag is of an integrally fixed structure and is a non-detachable structure, and the swing angle of the cross universal joint is larger; generally only bear torque and not bear axial force; in order to enable the cross package to be arranged in the single fork of the universal joint, the single fork can only be designed into a V-shaped opening, and the size of the cross package is reduced, so that the strength of the single fork is reduced, and the bearing capacity of the universal joint is also greatly reduced. The universal joint applied to the single-screw pump bears a large axial force besides a torque, and is limited by the installation size, the specification of the universal joint cannot be selected to be a large specification, and the self weight of the universal joint with a large specification is also large, so that the operation and the service life of the pump are influenced; therefore, when the traditional cross universal joint is applied to a single-screw pump, the main damage is that the single fork of the universal joint is broken, and the broken part is positioned at the position for containing the cross package.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model aims to provide a detachable universal joint which can bear larger torque and axial force compared with the prior universal joint with the same size; the self weight is light; the swing angle can not exceed 5 degrees, and the assembly and disassembly are convenient.

The utility model discloses the purpose realizes like this:

the utility model provides a detachable universal joint, includes the cross package and a pair of single fork of connecting through this cross package, its key lies in: the cross package includes cross connecting block, first round pin axle and second round pin axle, it has the cross pinhole by first pinhole and the perpendicular setting of second pinhole to open in the cross connecting block, and the central line dislocation of this first pinhole and second pinhole sets up, first round pin axle wears to establish in the first pinhole, and the middle part of this first round pin axle is opened has the edge the spacing groove that second pinhole central line direction set up, the second round pin axle is worn to establish in the second pinhole, and the lateral wall at this second round pin axle middle part with the groove face laminating of spacing groove, the tip of first round pin axle and second round pin axle stretches out respectively first pinhole and second pinhole and respectively with correspond single fork shaft hole normal running fit.

Adopt above-mentioned structure, cross connecting block and first round pin axle in the cross package, the detachable design of second round pin axle, make things convenient for the equipment shaping of universal joint, during the assembly, correspond the setting with the shaft hole of single fork with the cross pinhole of cross connecting block earlier, then pack first round pin axle into first round pin downthehole, adjust the spacing groove, pack the second round pin axle into in the second round pin hole again, the tip of first round pin axle and second round pin axle and the shaft hole cooperation of single fork, accomplish the assembly promptly, so for simple to operate need not design into the V type with single fork, also need not adopt small-size cross package, thereby improve the intensity of universal joint.

Preferably, needle roller bearings are arranged between the extending parts of the first pin shaft and the second pin shaft and the corresponding shaft holes of the single fork.

By adopting the structure, the pin shaft is in running fit with the shaft hole through the needle roller bearing, the rotation is more convenient, and the first pin shaft and the second pin shaft can be further fixed.

Further, the end openings of the first pin hole and the second pin hole are stepped holes, one side of the needle bearing is located in the corresponding stepped hole, and the side surface of the needle bearing is abutted to the stepped portion of the corresponding stepped hole.

By adopting the structure, the needle bearing, the first pin shaft and the second pin shaft are further limited.

Furthermore, the outer end faces of the first pin shaft and the second pin shaft are respectively provided with a baffle, the middle of each baffle is locked and fixed through a countersunk screw, the radius of each baffle is larger than that of the outer end face of the corresponding first pin shaft or the corresponding second pin shaft, the radius of each baffle is smaller than that of the shaft hole of the single fork, and the part of each baffle which is wider than the baffle blocks the needle bearing.

By adopting the structure, the baffle plate can block the needle bearing and can also limit the first pin shaft and the second pin shaft in the axial direction.

Preferably, the first pin shaft and the first pin hole, and the second pin shaft and the second pin hole are in transition fit or interference fit.

By adopting the structure, the stability of the installation of the first pin shaft, the second pin shaft and the cross-shaped connecting block is ensured, and the strength is further improved.

Preferably, the single fork is a U-shaped opening. Adopt above-mentioned structure, the cross package of this scheme of adoption also can be very light assemble to the open-ended single fork of U-shaped, and the intensity of single fork obtains improving, and then has improved the intensity of universal joint.

Has the advantages that:

compared with the prior universal joint with the same size, the detachable universal joint of the utility model is convenient to disassemble and assemble, and the cross-shaped bag can bear larger torque and axial force; the self weight is light; the swing angle can not exceed 5 degrees; the strength of the single fork can be enhanced without reducing the size of the cross-shaped bag, and further the integral bearing capacity and strength of the universal joint are improved.

Drawings

FIG. 1 is a schematic structural view of a detachable universal joint of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 1;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

description of reference numerals:

1a is a cross connecting block, 1b is a first pin shaft, 1c is a second pin shaft, 2 is a single fork, 3 is a first pin hole, 4 is a second pin hole, 6 is a needle bearing, 7 is a baffle plate, and 8 is a sunk screw.

Detailed Description

The present invention will be further explained with reference to the following examples and drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like refer to orientations or positional relationships based on those shown in the drawings, and are used only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

Examples

As shown in fig. 1 and 2 and 3 and 4: a detachable universal joint is composed of a cross bag and a pair of single forks 2 connected through the cross bag, wherein the single forks 2 are U-shaped openings. The cross package comprises a cross connecting block 1a, a first pin shaft 1b and a second pin shaft 1c, a cross pin hole vertically formed by a first pin hole 3 and a second pin hole 4 is formed in the cross connecting block 1a, the central lines of the first pin hole 3 and the second pin hole 4 are arranged in a staggered mode, the first pin shaft 1b is arranged in the first pin hole 3 in a penetrating mode, a limiting groove arranged in the direction of the central line of the second pin hole 4 is formed in the middle of the first pin shaft 1b, the second pin shaft 1c is arranged in the second pin hole 4 in a penetrating mode, the side wall of the middle of the second pin shaft 1c is attached to the groove surface of the limiting groove, and the end portions of the first pin shaft 1b and the second pin shaft 1c extend out of the first pin hole 3 and the second pin hole 4 respectively and are matched with the corresponding shaft holes of the single fork 2 in a rotating mode. The first pin shaft 1b and the first pin hole 3, and the second pin shaft 1c and the second pin hole 4 are in transition fit or interference fit.

As shown in fig. 1 and 2 and 3 and 4: the end openings of the first pin hole 3 and the second pin hole 4 are stepped holes, needle roller bearings 6 are arranged between the extending parts of the first pin shaft 1b and the second pin shaft 1c and the corresponding shaft holes of the single fork 2, one side of each needle roller bearing 6 is located in the corresponding stepped hole, and the side surface of each needle roller bearing 6 is abutted to the step part of the corresponding stepped hole. The outer end faces of the first pin shaft 1b and the second pin shaft 1c are respectively provided with a baffle 7, the middle of each baffle 7 is locked and fixed through a sunk screw 8, the radius of each baffle 7 is larger than that of the corresponding outer end face of the first pin shaft 1b or the corresponding outer end face of the second pin shaft 1c, the radius of each baffle 7 is smaller than that of the shaft hole of the single fork 2, and the part, which is wider than the baffle 7, blocks the needle bearing 6.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. A detachable universal joint comprises a cross bag and a pair of single forks (2) connected through the cross bag, and is characterized in that: the cross bag comprises a cross connecting block (1a), a first pin shaft (1b) and a second pin shaft (1c), a cross pin hole vertically arranged by a first pin hole (3) and a second pin hole (4) is arranged in the cross connecting block (1a), the central lines of the first pin hole (3) and the second pin hole (4) are arranged in a staggered way, the first pin shaft (1b) is arranged in the first pin hole (3) in a penetrating way, the middle part of the first pin shaft (1b) is provided with a limit groove arranged along the central line direction of the second pin hole (4), the second pin shaft (1c) is arranged in the second pin hole (4) in a penetrating way, and the side wall in the middle of the second pin shaft (1c) is attached to the groove surface of the limiting groove, and the end parts of the first pin shaft (1b) and the second pin shaft (1c) respectively extend out of the first pin hole (3) and the second pin hole (4) and are respectively matched with the corresponding shaft hole of the single fork (2) in a rotating mode.

2. The removable gimbal according to claim 1, wherein: needle roller bearings (6) are arranged between the extending parts of the first pin shaft (1b) and the second pin shaft (1c) and the corresponding shaft holes of the single fork (2).

3. The removable gimbal according to claim 2, wherein: the end openings of the first pin hole (3) and the second pin hole (4) are stepped holes, one side of the needle roller bearing (6) is located in the corresponding stepped hole, and the side face of the needle roller bearing (6) is abutted to the step portion of the corresponding stepped hole.

4. The removable gimbal according to claim 3, wherein: the outer end faces of the first pin shaft (1b) and the second pin shaft (1c) are respectively provided with a baffle (7), the middle of each baffle (7) is locked and fixed through a sunk screw (8), the radius of each baffle (7) is larger than that of the outer end face of the corresponding first pin shaft (1b) or the corresponding second pin shaft (1c), the radius of each baffle (7) is smaller than that of the shaft hole of the single fork (2), and the part of each baffle (7) which is wide blocks the needle bearing (6).

5. The removable gimbal according to claim 1, 2, 3 or 4, wherein: the first pin shaft (1b) and the first pin hole (3) as well as the second pin shaft (1c) and the second pin hole (4) are in transition fit or interference fit.

6. The removable gimbal according to claim 1, 2, 3 or 4, wherein: the single fork (2) is provided with a U-shaped opening.