A single-slit radial spherical bearing expansion device

Abstract

The present invention provides a single-slit radial spherical bearing expansion device, comprising a power device, a ball head push rod and a fixed seat, wherein the fixed seat is provided with a hole A and a hole B in sequence from top to bottom, the spherical guide at the top of the ball head push rod extends into the inside of the hole B, the outer ring of the radial spherical bearing is placed into the hole B from one side of the fixed seat, and is fixed by the spherical guide, the ball head push rod is driven by the power device, and the ball head push rod is pushed upward, and after the outer ring is locked, the ball head push rod continues to slowly push into the inner part of the outer ring of the radial spherical bearing, so that the gap of the outer ring becomes larger, and the inner ring of the radial spherical bearing is placed into the outer ring of the radial spherical bearing from the hole A, and the assembly is completed. The present invention is easy to operate, has high processing efficiency, strong safety, and reduces the scrap rate of the radial spherical bearing during the assembly process.

Description

Technical Field

[0001] The invention belongs to the technical field of bearing assembly, and in particular relates to a single-slit radial spherical bearing expansion device. Background Art

[0002] The single-slit radial spherical plain bearing is mainly composed of the inner ring and the outer ring of the bearing. Through the sliding contact between the outer spherical surface of the inner ring and the inner spherical surface of the outer ring, it has a high dynamic and static load. When assembling the two, the outer ring is opened manually or by a hydraulic press through a manual rotating pressing device, and a piece of paper of suitable thickness is stuffed into the gap of the outer ring. Then the inner ring is manually placed into the outer ring, and then the paper is taken out to complete the assembly of the inner and outer rings. The characteristics of this assembly method are: large human factors, low efficiency, and it is difficult to find the gap accurately. For thin-walled radial spherical plain bearings, the scrap rate of the outer ring is very high, the outer ring is prone to cracking during the opening process, causing danger, and the size of the gap is difficult to control. Summary of the invention

[0003] In view of the shortcomings in the prior art, the present invention provides a single-slit radial spherical bearing expansion device, which can expand the outer ring of the radial spherical bearing better, faster and safer to facilitate the assembly of the inner ring.

[0004] The present invention achieves the above technical objectives through the following technical means.

[0005] A single-slit radial spherical bearing expansion device comprises a power device, a ball head push rod and a fixing seat, wherein the power device is fixedly connected to the bottom end of the ball head push rod, the fixing seat is provided with a hole A and a hole B from top to bottom, the fixing seat below the hole B is arranged to be hollow for placing the ball head push rod, the top end of the ball head push rod is provided with a spherical guide, and the spherical guide extends into the interior of the hole B; the width of the hole A is smaller than the width of the hole B, and the diameter of the spherical guide is smaller than the inner diameter of the outer ring of the radial spherical bearing.

[0006] Preferably, the single-slit radial spherical bearing support device also includes a stand and a fixed plate, the top of the stand is fixedly connected to the fixed plate, the upper part of the fixed plate is fixedly connected to a fixed seat, and the fixed plate is provided with a through hole for the ball head push rod to pass through.

[0007] Preferably, the power device is fixed below the fixing plate.

[0008] Preferably, the power device is a gas cylinder or an oil cylinder.

[0009] Preferably, the height of the hole B is greater than the height of the outer ring of the radial spherical plain bearing.

[0010] Preferably, the spherical guide top end is provided with a groove, and the size of the groove is larger than the size of the end of the inner ring of the radial spherical plain bearing.

[0011] Preferably, the ball head push rod moves up and down driven by the power device.

[0012] The beneficial effects of the present invention are:

[0013] In the present invention, a spherical guide is provided at the top of the ball head push rod, and the spherical guide extends into the hole B. The outer ring of the radial joint bearing is placed into the hole B from one side of the fixed seat and fixed by the spherical guide. The ball head push rod is driven by the power device to push the ball head push rod upward. After the position of the outer ring of the radial joint bearing is locked, the ball head push rod continues to slowly advance into the inner part of the outer ring of the radial joint bearing, thereby enlarging the gap of the outer ring. The inner ring of the radial joint bearing is placed into the outer ring of the radial joint bearing from the fixed seat hole A to complete the assembly. The present invention is easy to operate, has high processing efficiency and strong safety, and solves the problem that the radial joint bearing is easy to collapse and damage during the assembly process; it is worthy of promotion and application in the field of assembly of radial joint bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the single-slit radial spherical bearing support device of the present invention;

[0015] Figure 2 It is a schematic diagram of the structure of the fixing seat of the present invention;

[0016] Figure 3 is a schematic diagram of the structure of the ball head push rod of the present invention, Figure 3 (a) is a front view of the ball head push rod of the present invention, Figure 3 (b) is a top view of the ball head push rod of the present invention;

[0017] Figure 4 This is a diagram showing the matching of the inner and outer rings of a radial spherical bearing assembled with the single-slit radial spherical bearing expansion device described in the present invention.

[0018] In the figure, 1-power device, 2-test bench, 3-fixed plate, 4-ball head push rod, 5-fixed seat, 6-radial spherical plain bearing outer ring, 7-radial spherical plain bearing inner ring. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0020] like Figure 1 As shown, a single-slit radial spherical bearing expansion device includes a power device 1, a stand 2, a fixing plate 3, a ball head push rod 4 and a fixing seat 5. The top of the stand 2 is fixedly connected to the fixing plate 3, and the upper part of the fixing plate 3 is fixedly connected to the fixing seat 5; Figure 2As shown, the fixing seat 5 is provided with holes A and B from top to bottom, hole A is used to position the inner ring 7 of the radial spherical plain bearing, hole B is used to position the outer ring 6 of the radial spherical plain bearing, and the width of hole A is smaller than the width of hole B, and the height of hole B is greater than the height of the outer ring 6 of the radial spherical plain bearing; the fixing seat 5 below hole B is set to be hollow for placing the ball head push rod 4, as shown in FIG. Figure 3 As shown, a spherical guide is provided at the top of the ball head push rod 4, and the spherical guide of the ball head push rod 4 extends into the hole B, and the diameter of the spherical guide is slightly smaller than the inner diameter of the outer ring 6 of the radial spherical bearing, and a groove is provided at the top of the spherical guide, and the size of the groove is slightly larger than the end size of the inner ring 7 of the radial spherical bearing; after the bottom end of the ball head push rod 4 passes through the fixed plate 3, it is fixedly connected to the power device 1, and the power device 1 is fixed under the fixed plate 3; specifically, in this embodiment, the power device 1 can be a cylinder or an oil cylinder, and the output rod of the cylinder or the oil cylinder is connected to the bottom end of the ball head push rod 4 through a thread.

[0021] The single-slit radial spherical bearing expansion device of the present invention is simple to operate and use, has precise product processing, and a safe and stable working process. The specific process is as follows;

[0022] The radial spherical bearing outer ring 6 is placed into the hole B from one side of the fixing seat 5. After it contacts with the ball head push rod 4, the spherical guide of the ball head push rod 4 automatically clamps the radial spherical bearing outer ring 6 to fix the position of the radial spherical bearing outer ring 6; start the power device 1, and the power device 1 pushes the ball head push rod 4 upward. When the radial spherical bearing outer ring 6 contacts with the bottom end of the hole A of the fixing seat 5, the position of the radial spherical bearing outer ring 6 is locked. The ball head push rod 4 continues to slowly advance into the inner part of the radial spherical bearing outer ring 6 under the push of the power device 1, thereby enlarging the gap of the outer ring. Since the ball head push rod 4 is pushed in by the ball head, the radial spherical bearing outer ring 6 will not be subjected to uneven force and cause collapse; when the gap of the radial spherical bearing outer ring 6 is expanded, the radial spherical bearing inner ring 7 is placed into the radial spherical bearing outer ring 6 from the hole A of the fixing seat 5. Since the spherical guide is provided with a groove, the radial spherical bearing inner ring 7 is restricted from continuing to move downward, but just assembled with the radial spherical bearing outer ring 6. After the inner ring is placed, control the power device 1 to return to its original position, and the assembled product ( Figure 4 ) is taken out from the side of the fixing seat 5. In order to ensure safety, the fixing seat 5 is closed except for the notch for putting in and taking out the product, thereby ensuring safety during the working process.

[0023] The embodiments are preferred implementations of the present invention, but the present invention is not limited to the above-mentioned implementations. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention belong to the protection scope of the present invention.

Claims

1. A single-slit radial spherical bearing expansion device, characterized in that: The invention comprises a power device (1), a ball head push rod (4) and a fixing seat (5), wherein the power device (1) is fixedly connected to the bottom end of the ball head push rod (4), the fixing seat (5) is provided with a hole A and a hole B in sequence from top to bottom, the fixing seat (5) below the hole B is arranged in a hollow shape for placing the ball head push rod (4), the top end of the ball head push rod (4) is provided with a spherical guide, and the spherical guide extends into the hole B; the width of the hole A is smaller than the width of the hole B, and the diameter of the spherical guide is smaller than the inner diameter of the outer ring (6) of the radial spherical bearing; The top end of the spherical guide is provided with a groove, the size of which is larger than the size of the end of the inner ring (7) of the radial spherical plain bearing.

2. The single-slit radial spherical bearing expansion device according to claim 1, characterized in that: It also comprises a stand (2) and a fixing plate (3), wherein the top of the stand (2) is fixedly connected to the fixing plate (3), the upper part of the fixing plate (3) is fixedly connected to a fixing seat (5), and the fixing plate (3) is provided with a through hole for the ball head push rod (4) to pass through.

3. The single-slit radial spherical bearing expansion device according to claim 2, characterized in that: The power device (1) is fixed below the fixing plate (3).

4. The single-slit radial spherical bearing expansion device according to claim 3, characterized in that: The power device (1) is a gas cylinder or an oil cylinder.

5. The single-slit radial spherical plain bearing expansion device according to claim 1, characterized in that: The height of the hole B is greater than the height of the radial spherical plain bearing outer ring (6).

6. The single-slit radial spherical plain bearing expansion device according to claim 1, characterized in that: The ball head push rod (4) moves up and down under the drive of the power device (1).

Images