Sleeve body press-in device

Abstract

The utility model relates to a sleeve body press-in device, which comprises a support frame, a bracket, an upper pressure head, a lower pressure head and a driving device, the upper pressure head and the lower pressure head are coaxially arranged on the support frame at an interval up and down, the bracket is arranged on the support frame, and the driving device is connected with the upper pressure head and can drive the upper pressure head to move up and down. According to the sleeve body press-in device, the two sleeve bodies can be pressed in the inner holes in the two sides of the part to be pressed at the same time, and the installation efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the application field of railway locomotive vehicle foundation brake, in particular to a sleeve pressing device. Background Art

[0002] At present, there are about 3,500 EMUs in stock. In recent years, the output of new EMUs has been stable, and the annual growth rate of EMUs under maintenance has reached more than 20%. With the continuous development of maintenance business, the maintenance business has also been continuously expanded. At the same time, customers' requirements for the maintenance process level, quality capability, maintenance cycle, maintenance cost, and maintenance data of brake caliper units have also been continuously improved. At present, the assembly process of brake caliper units has problems such as low degree of automation, low precision, high labor intensity, and low installation efficiency.

[0003] The brake cylinder assembly includes two parts: pre-assembly and final assembly. The pre-assembly includes cylinder body, piston, clearance adjuster, connecting rod, parking cylinder, hand release, etc. The final assembly assembles the pre-assembled parts in sequence to form a brake cylinder. During final assembly, two yellow sleeves need to be pressed into the common cylinder body. In the prior art, a press machine is required to press the two yellow sleeves one by one, and there is no alignment device, resulting in low installation accuracy and low installation efficiency. Utility Model Content

[0004] The utility model aims to provide a sleeve pressing device, which can simultaneously press-fit two sleeves into inner holes on both sides of a component to be pressed, thereby achieving higher installation efficiency.

[0005] The purpose of the utility model is achieved in this way. A sleeve pressing device includes a support frame, a bracket, an upper pressure head, a lower pressure head and a driving device; the upper pressure head and the lower pressure head are spaced up and down and coaxially arranged on the support frame, the bracket is arranged on the support frame, and the driving device is connected to the upper pressure head and can drive the upper pressure head to move up and down.

[0006] In a preferred embodiment of the present invention, the bracket is arranged close to the lower pressure head, and the top surface of the bracket is a V-shaped groove.

[0007] In a preferred embodiment of the present invention, the bracket includes a supporting block and a supporting leg connected up and down, the bottom of the supporting leg is connected to the support frame, and a V-shaped groove is formed on the top surface of the supporting block.

[0008] In a preferred embodiment of the present invention, the upper pressure head comprises a cylindrical pressure block and an upper cylindrical guide block connected up and down, and the diameter of the upper cylindrical guide block is smaller than the diameter of the cylindrical pressure block.

[0009] In a preferred embodiment of the present invention, the lower pressure head comprises a lower cylindrical guide block, and an annular flange is protruded from the bottom of the lower cylindrical guide block.

[0010] In a preferred embodiment of the present invention, a support column is connected to the bottom of the lower cylindrical guide block, and the diameter of the support column is greater than the diameter of the flange.

[0011] In a preferred embodiment of the present invention, the support frame includes a top plate and a bottom plate spaced apart from each other and a plurality of columns connected between the top plate and the bottom plate, the drive device is disposed on the top plate, and the bracket and the downward pressure head are disposed on the bottom plate.

[0012] In a preferred embodiment of the present invention, the top plate and the bottom plate are both rectangular plates.

[0013] In a preferred embodiment of the present invention, the driving device is a cylinder, the piston rod of the cylinder is vertically arranged and the bottom end of the piston rod is fixedly connected to the upper pressure head.

[0014] In a preferred embodiment of the utility model, a switch is provided on the support frame, and the switch is connected to the cylinder and can control the movement of the cylinder.

[0015] As described above, the sleeve pressing device of the utility model can press-fit two sleeves into the inner holes on both sides of the component to be pressed at the same time through the cooperation of the driving device and the upper and lower pressing heads, which has higher installation efficiency and ensures installation accuracy by keeping the upper and lower pressing heads coaxial. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0017] Figure 1 : It is a schematic diagram of the sleeve pressing device provided by the utility model.

[0018] Figure 2 : It is a front view of the sleeve pressing device provided by the utility model.

[0019] Figure 3 : It is a schematic diagram of two bushings pressed onto both sides of a cylinder body of a common cylinder provided by the utility model.

[0020] Description of Figure Numbers:

[0021] 1. Support frame; 11. Top plate; 12. Bottom plate; 13. Column;

[0022] 2. bracket; 21. supporting block; 22. supporting leg;

[0023] 3. Upper pressure head; 31. Cylindrical pressure block; 32. Upper cylindrical guide block;

[0024] 4. lower pressure head; 41. lower cylindrical guide block; 42. flange; 43. support column;

[0025] 5. Driving device; 51. Switch;

[0026] 6. Commonly used cylinder blocks; 61. Bushings. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0028] like Figures 1 to 3 As shown, this embodiment provides a sleeve pressing device, including a support frame 1, a bracket 2, an upper pressure head 3, a lower pressure head 4 and a driving device 5; the upper pressure head 3 and the lower pressure head 4 are arranged on the support frame 1 with an upper and lower spacing and coaxially, the bracket 2 is arranged on the support frame 1, and the driving device 5 is connected to the upper pressure head 3 and can drive the upper pressure head 3 to move up and down.

[0029] Among them, the sleeve pressing device is mainly used to press the two sleeves into the inner holes on both sides of the component to be pressed. The above-mentioned bracket 2 is used to support the side walls of the component to be pressed. When in use, the two sleeves are first inserted into the inner holes on both sides of the component to be pressed, and then the component to be pressed is placed on the bracket 2, and the axis of the sleeve is placed vertically so that the sleeve is coaxial with the upper pressure head 3 and the lower pressure head 4. Start the driving device 5, and the upper pressure head 3 moves downward, so that the two sleeves can be pressed into the inner holes on both sides of the component to be pressed at the same time.

[0030] Therefore, the sleeve pressing device in this embodiment can press-fit the two sleeves into the inner holes on both sides of the component to be pressed at the same time through the cooperation of the driving device 5 and the upper and lower pressing heads, which has higher installation efficiency and ensures the installation accuracy by keeping the upper and lower pressing heads coaxial.

[0031] It can be understood that the sleeve pressing device can be applied to any situation where two sleeves need to be pressed into the inner holes on both sides of the parts to be pressed. The sleeve here mainly refers to a cylindrical structure with openings at both ends, and the outer wall of one end has a convex ring with an increased diameter; generally, the outer wall of the part to be pressed is cylindrical. In order to facilitate the support of the bracket 2 to better support the part to be pressed, refer to Figure 1 The bracket 2 is arranged close to the lower pressing head 4, and its top surface is a V-shaped groove, which can support the outer cylindrical wall of the component to be pressed.

[0032] Generally, the bracket 2 includes a supporting block 21 and a supporting leg 22 connected up and down, the bottom of the supporting leg 22 is connected to the support frame 1, and a V-shaped groove is formed on the top surface of the supporting block 21. The number of the supporting legs 22 is determined according to needs, for example, the number of the supporting legs 22 in this embodiment is two.

[0033] Furthermore, the upper pressing head 3 includes a cylindrical pressing block 31 and an upper cylindrical guide block 32 connected in upper and lower parts, and the diameter of the upper cylindrical guide block 32 is smaller than the diameter of the cylindrical pressing block 31; the upper cylindrical guide block 32 is used to be inserted into the inner hole of the sleeve placed in the inner hole on one side of the part to be pressed, and plays a guiding role; during the pressing process, the bottom surface of the cylindrical pressing block 31 can be pressed against the end surface of the sleeve and press the sleeve downward.

[0034] The pressing head 4 includes a lower cylindrical guide block 41, and a ring-shaped flange 42 is protruded from the bottom of the lower cylindrical guide block 41; the lower cylindrical guide block 41 can be inserted into the inner hole of the sleeve body placed in the inner hole on the other side of the part to be pressed, and plays a guiding role; the flange 42 is used to support the side of the part to be pressed during the pressing process. Generally, a support column 43 is connected to the bottom of the lower cylindrical guide block 41, and the diameter of the support column 43 is larger than the diameter of the flange 42.

[0035] The support frame 1 may include, for example, a top plate 11 and a bottom plate 12 spaced apart from each other and a plurality of columns 13 connected between the top plate 11 and the bottom plate 12, the driving device 5 is disposed on the top plate 11, and the bracket 2 and the pressing head 4 are disposed on the bottom plate 12. Generally, the top plate 11 and the bottom plate 12 are both rectangular plates.

[0036] The driving device 5 can be, for example, a cylinder, the piston rod of which is vertically arranged and the bottom end of which is fixedly connected to the upper pressure head 3. A switch 51 is also provided on the support frame 1, and the switch 51 is used to control the action of the cylinder. The switch 51 can be, for example, a hand valve, and the operator can manually operate the hand valve to control the cylinder to move upward or downward.

[0037] The entire sleeve pressing device can be applied to the existing brake caliper unit products of railway locomotives and vehicles, and can be used to press-fit the two yellow sleeves into the common cylinder body 6. At this time, the component to be pressed is the common cylinder body 6 of the common cylinder of the brake cylinder (the brake cylinder mentioned in this article is an air brake), the sleeve is a yellow sleeve, and the structure of the common cylinder body 6 is the existing structure, and two inner holes are symmetrically provided on both sides thereof for installing the two yellow sleeves. The yellow sleeve is also the bushing 61, which is a wear-resistant bushing that can protect the common cylinder body 6; the structure of the bushing 61 is also the existing structure, which is a cylindrical structure with openings at both ends, and the outer wall of one end has a convex ring with an increased diameter. Taking the press-fitting of the bushing 61 in the common cylinder body 6 as an example, the press-fitting process is as follows:

[0038] During operation, two bushings 61 are respectively inserted into the inner holes on both sides of the common cylinder body 6, and then the common cylinder body 6 is installed on the bracket 2 and the lower pressure head 4 in a state where its axis is placed horizontally. At this time, the side wall of the common cylinder body 6 is supported on the bracket 2, and the bushing 61 placed in the side hole at the bottom of the common cylinder body 6 is sleeved on the lower cylindrical guide block 41 of the lower pressure head 4; the bushing 61 placed in the side hole at the top of the common cylinder body 6 is directly opposite to the upper pressure head 3. After that, the driving device 5 is started to drive the upper pressure head 3 to move downward, so that the two bushings 61 can be pressed into the inner holes on both sides of the common cylinder body 6 at the same time. Compared with the prior art that requires a press to press two bushings 61 one by one separately, the present embodiment can press two bushings 61 at the same time, and the installation efficiency is higher.

[0039] The above is only an illustrative embodiment of the utility model, and is not intended to limit the scope of the utility model. Any equivalent changes and modifications made by any technician in the field without departing from the concept and principle of the utility model should fall within the scope of protection of the utility model.

Claims

1. A sleeve pressing device, characterized in that: It includes a support frame, a bracket, an upper pressure head, a lower pressure head and a driving device; the upper pressure head and the lower pressure head are spaced up and down and coaxially arranged on the support frame, the bracket is arranged on the support frame, and the driving device is connected to the upper pressure head and can drive the upper pressure head to move up and down.

2. The sleeve pressing device according to claim 1, characterized in that: The bracket is arranged close to the pressing head, and the top surface of the bracket is a V-shaped groove.

3. The sleeve pressing device according to claim 2, characterized in that: The bracket includes a supporting block and a supporting leg connected up and down, the bottom of the supporting leg is connected to the supporting frame, and the V-shaped groove is formed on the top surface of the supporting block.

4. The sleeve pressing device according to claim 1, characterized in that: The upper pressing head comprises a cylindrical pressing block and an upper cylindrical guiding block connected up and down, and the diameter of the upper cylindrical guiding block is smaller than the diameter of the cylindrical pressing block.

5. The sleeve pressing device according to claim 1, characterized in that: The lower pressure head comprises a lower cylindrical guide block, and an annular flange is protruded from the bottom of the lower cylindrical guide block.

6. The sleeve pressing device according to claim 5, characterized in that: The bottom of the lower cylindrical guide block is connected with a support column, and the diameter of the support column is greater than the diameter of the flange.

7. The sleeve pressing device according to claim 1, characterized in that: The support frame includes a top plate and a bottom plate spaced apart from each other and a plurality of columns connected between the top plate and the bottom plate. The driving device is arranged on the top plate, and the bracket and the pressing head are arranged on the bottom plate.

8. The sleeve pressing device according to claim 7, characterized in that: The top plate and the bottom plate are both rectangular plates.

9. The sleeve pressing device according to claim 1, characterized in that: The driving device is a cylinder, the piston rod of the cylinder is vertically arranged and the bottom end of the piston rod is fixedly connected to the upper pressure head.

10. The sleeve pressing device according to claim 9, characterized in that: A switch is provided on the support frame, and the switch is connected to the cylinder and can control the action of the cylinder.

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