A brake valve sleeve withdrawal device and sleeve withdrawal method

Abstract

The present invention discloses a brake valve sleeve withdrawal device and a sleeve withdrawal method. The device includes a sleeve withdrawer and a valve body fixing assembly. The front end of the sleeve withdrawer is provided with an inner sleeve connecting portion, and the rear end of the sleeve withdrawer is connected to a sleeve pulling assembly. The sleeve withdrawal method includes a sleeve withdrawer, which connects an inner sleeve connector with an inner sleeve, fixes the valve body with a valve body fixing assembly, and pulls the sleeve withdrawer and the inner sleeve together through the sleeve pulling assembly to withdraw the inner sleeve from the valve body. The beneficial effects of the present invention are as follows: the sleeve withdrawal adopts a mechanical method to reduce the labor intensity; the sleeve withdrawal adopts a mechanical method to save time and effort, and is highly efficient; after the sleeve is withdrawn, the surface size of the inner hole of the valve body is guaranteed to reduce defects such as surface scratches, and the inner hole of the brake valve body does not need to be processed before pressing the sleeve, and the inner sleeve does not need to be processed separately, saving labor time and cost.

Description

Technical Field

[0001] The invention belongs to the technical field of brake valve maintenance and matching, and in particular relates to a brake valve sleeve withdrawal device and a sleeve withdrawal method thereof. Background Art

[0002] In the production and maintenance of railway brake valves, if the body and sleeve of the brake valve cannot be tightly sealed and leaks occur, the inner sleeve of the brake valve needs to be withdrawn from the valve body. After the sleeve is withdrawn, it is necessary to press the sleeve so that the brake valve body can be assembled. Because the body and sleeve fit is an interference fit, the inner sleeve is pressed into the valve body by a hydraulic press. In production, a large number of body and sleeve leaks and need to be withdrawn (about 8,000 sets per year). The original manual withdrawal is time-consuming and labor-intensive, and the labor intensity of workers is high.

[0003] The existing method of withdrawing the set is manual withdrawal, see Figure 1 First, the inner sleeve is tapped, and then the threaded column part at the front end of the sleeve withdrawal device is screwed into the inner sleeve for connection, the brake valve is fixed, and the moving hammer 9 of the sleeve withdrawal device is manually operated to hit the raised part at the rear end of the sleeve withdrawal device to pull the inner sleeve outward. However, the labor intensity of manual sleeve withdrawal workers is large, time-consuming and labor-intensive, and the efficiency is not high.

[0004] Moreover, manual sleeve withdrawal can easily damage the surface of the inner hole of the brake valve body. If the surface of the inner hole of the valve body is damaged, the inner hole needs to be processed to make the surface smooth before the sleeve can be pressed. The required sleeve also needs to be processed individually according to the inner surface size of the hole, which increases working hours and costs. Summary of the invention

[0005] The purpose of the present invention is to provide a brake valve sleeve withdrawal device and a sleeve withdrawal method thereof, which solves the problem that the existing manual sleeve withdrawal is time-consuming and labor-intensive.

[0006] The object of the present invention is achieved through the following technical solutions:

[0007] A brake valve sleeve withdrawal device includes a sleeve withdrawer and a valve body fixing assembly. The front end of the sleeve withdrawer is provided with an inner sleeve connecting portion, and the rear end of the sleeve withdrawer is connected to a sleeve pulling assembly. The valve body fixing assembly fixes the valve body, and then the front end of the sleeve withdrawer is inserted into and connected to the inner sleeve. The inner sleeve is pulled by the sleeve pulling assembly to realize the withdrawal of the inner sleeve from the valve body.

[0008] Furthermore, the inner sleeve connection part is a threaded column, on which an external thread is arranged. The internal thread is processed in advance in the inner sleeve, and the connection between the sleeve extractor and the inner sleeve is realized through the thread.

[0009] Furthermore, a clamping plate is provided at the rear end of the sleeve extractor, and the clamping plate is arranged in a clamping groove, and the clamping groove is located on the telescopic end of the sleeve pulling assembly. The clamping and fixing of the clamping plate is achieved through the clamping groove, so as to achieve the connection between the sleeve extractor and the sleeve pulling assembly.

[0010] Furthermore, the valve body fixing assembly is a clamping assembly, and the valve body is fixed by the clamping assembly.

[0011] Furthermore, the clamping assembly includes a symmetrical clamping seat, on which relative long grooves are horizontally provided, one end of the long grooves is open, and the long grooves are used for clamping and installing the valve body. The valve body enters from the opening of the long groove. When the valve body is withdrawn horizontally, it is clamped and fixed at the bottom of the long groove. When the valve body is withdrawn vertically, the valve body is clamped by the upper side wall of the long groove.

[0012] Furthermore, the pull sleeve assembly is a telescopic pull sleeve assembly, and the telescopic pull sleeve assembly has a direct and simple effect on the sleeve withdrawing device.

[0013] Furthermore, the pulling sleeve assembly is a cylinder.

[0014] Furthermore, the valve body fixing assembly is provided with one group, and the sleeve withdrawer and sleeve pulling assembly are provided with two groups, which are arranged horizontally and vertically respectively, so as to realize the withdrawal of the inner sleeve in the horizontal and vertical positions of the valve body respectively.

[0015] Furthermore, the valve body fixing assembly and the pulling sleeve assembly are both installed on a fixing frame.

[0016] A sleeve withdrawal method for the brake valve sleeve withdrawal device includes a sleeve withdrawer, which connects an inner sleeve connector to an inner sleeve, fixes the valve body with a valve body fixing assembly, and pulls the sleeve withdrawer and the inner sleeve together through a sleeve pulling assembly to withdraw the inner sleeve from the valve body.

[0017] Beneficial effects of the present invention:

[0018] 1. Mechanical method is used for withdrawal to reduce the intensity of manual labor.

[0019] 2. The sleeve withdrawal adopts mechanical method, which saves time and effort and is highly efficient.

[0020] 3. After the sleeve is withdrawn, the surface size of the inner hole of the valve body is guaranteed to reduce surface scratches and other defects. There is no need to process the inner hole of the brake valve body before pressing the sleeve, and the inner sleeve does not need to be processed separately, saving time and cost.

[0021] The aforementioned main scheme of the present invention and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection by the present invention; and in the present invention, (non-conflicting options) options and other options can also be freely combined. After understanding the scheme of the present invention, those skilled in the art can understand that there are many combinations based on the prior art and common knowledge, all of which are technical schemes to be protected by the present invention, and they are not exhaustively listed here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the existing manual withdrawal.

[0023] Figure 2 It is a structural schematic diagram of the present invention.

[0024] Figure 3 It is a schematic diagram of the withdrawal of the present invention.

[0025] Figure 4 It is a structural schematic diagram of a specific embodiment of the present invention.

[0026] In the figure: 1-valve body, 2-inner sleeve, 3-sleeve ejector, 4-threaded column, 5-clamping plate, 6-clamping assembly, 7-cylinder, 8-fixed bracket, 9-moving hammer. DETAILED DESCRIPTION

[0027] The following non-limiting examples serve to illustrate the invention.

[0028] Embodiment 1:

[0029] refer to Figure 2 to Figure 4 As shown, a brake valve sleeve withdrawal device includes a sleeve withdrawer 3, a valve body fixing assembly, a sleeve pulling assembly and a fixing frame 8. The valve body fixing assembly and the sleeve pulling assembly are both fixedly mounted on the fixing frame 8 to ensure that the valve body fixing assembly and the sleeve pulling assembly can be pulled against each other.

[0030] The front end of the sleeve extractor 3 is provided with an inner sleeve connection part, which is used to realize the fixed connection between the sleeve extractor and the inner sleeve, and the inner sleeve connection part can be connected by threaded connection, internal bracing connection, internal clamping connection, etc. Preferably, the inner sleeve connection part is an integrally connected threaded column 4, on which an external thread is provided, and the external thread cooperates with the internal thread inside the inner sleeve to realize the connection and fixation between the threaded column and the inner sleeve.

[0031] The rear end of the sleeve withdrawer 3 is connected to the sleeve pulling assembly, so that when the sleeve pulling assembly performs sleeve pulling movement, it can drive the sleeve withdrawer to move together. The connection between the sleeve withdrawer and the sleeve pulling assembly can be threaded, clamped, adhesively connected or integrally manufactured. Preferably, the rear end of the sleeve withdrawer 3 is integrally connected with a clamping plate 5, which is arranged in a clamping groove. The clamping groove is located on the telescopic end of the sleeve pulling assembly, and the clamping groove is opened at the side of the telescopic end to enable the clamping plate to enter and exit the clamping groove. After the clamping plate is clamped into the clamping groove, when the sleeve pulling assembly performs telescopic movement, it can drive the sleeve withdrawer to move together.

[0032] The valve body fixing assembly is used to fix the valve body and realize the fixed installation of the valve body so that the inner sleeve in the valve body can be withdrawn. The valve body fixing assembly can be fixed by pressing, clamping or magnetic adsorption. Preferably, the valve body fixing assembly is a clamping assembly 6, which realizes the fixation of the valve body by pulling and limiting the valve body.

[0033] Preferably, the clamping assembly 6 includes a symmetrical clamping seat, on which a relative long groove is horizontally provided, in which the valve body is clamped, and one end of the long groove is open, and the valve body can enter the long groove from the opening. When the valve body slides to the bottom of the long groove, it cannot move inward, and at this time, the inner sleeve is pulled inward to achieve horizontal withdrawal. When the valve body enters the long groove, it is limited by the upper side wall of the long groove and cannot be lifted upward, and at this time, the inner sleeve is pulled upward to achieve vertical withdrawal. The clamping structure is simple and convenient for production and processing.

[0034] The sleeve pull assembly is used to provide the power of the sleeve pull, and the inner sleeve is withdrawn from the valve body by the sleeve withdrawer. The sleeve pull assembly can be a telescopic type, a gear rack drive type, a swing cam reciprocating type, or a screw slide rail type. Preferably, the sleeve pull assembly is a telescopic sleeve pull assembly, and specifically, the sleeve pull assembly is a cylinder 7, and the sleeve withdrawer and the inner sleeve are driven to move together by the extension and contraction of the cylinder.

[0035] There is one set of valve body fixing components, and one set of valve body fixing components realizes the fixed installation of a single valve body. There are two sets of sleeve withdrawing device 3 and sleeve pulling component, which are arranged horizontally and vertically respectively, and can realize the sleeve withdrawing operation in both horizontal and vertical directions in the valve body, which is more practical.

[0036] refer to Figure 3 As shown, a method for withdrawing a sleeve of the brake valve withdrawing device is to connect the inner sleeve connector with the inner sleeve 2, fix the valve body 1 with the valve body fixing assembly, and pull the sleeve withdrawing device 3 and the inner sleeve 2 together through the sleeve pulling assembly to withdraw the inner sleeve 2 from the valve body 1. The order of fixing the valve body and connecting the inner sleeve can be flexibly adjusted according to work needs, and the written order does not mean the order of operation.

[0037] Regarding the threaded connection method between the inner sleeve and the withdrawing device, before withdrawing the sleeve, it is necessary to tap the inner sleeve and process the internal threads in the inner sleeve to achieve the threaded connection between the threaded column and the inner sleeve.

[0038] When the valve body is withdrawn horizontally and vertically at the same time, first install the vertical withdrawer into the vertical inner sleeve, then push the valve body into the slot to the bottom of the slot, so that the clamping plate of the vertical withdrawer is clamped into the clamping slot. Then clamp the clamping plate of the horizontal withdrawer into the clamping slot, and install the horizontal withdrawer into the horizontal inner sleeve by rotating the horizontal withdrawer. Finally, start the cylinder to realize the withdrawal operation of the horizontal and vertical inner sleeves at the same time.

[0039] The aforementioned basic examples of the present invention and their further selected examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed for protection by the present invention. In the scheme of the present invention, each selected example can be arbitrarily combined with any other basic example and selected example. For example, as shown in FIG. , it can also be regarded as a combination of a basic example and a selected example . . . , and FIG. . . can also be regarded as a combination of a basic example and a selected example . . . , and so on. This is not exhaustive, and those skilled in the art will know that there are many combinations.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A brake valve sleeve removal device, comprising a sleeve removal device (3), characterized in that: It also includes a valve body fixing assembly, the front end of the sleeve withdrawing device (3) is provided with an inner sleeve connecting portion, and the rear end of the sleeve withdrawing device (3) is connected to the sleeve pulling assembly; The inner sleeve connection portion is a threaded column (4), and the threaded column (4) is provided with an external thread; The rear end of the sleeve withdrawing device (3) is provided with a clamping plate (5), the clamping plate (5) is arranged in a clamping groove, and the clamping groove is located on the telescopic end of the sleeve pulling assembly; the clamping groove is open at the side of the telescopic end; The pull sleeve assembly is a telescopic pull sleeve assembly; The valve body fixing assembly and the pull sleeve assembly are both mounted on a fixing frame (8); The valve body fixing component is a clamping component (6); The clamping assembly (6) comprises a symmetrical clamping seat, on which are horizontally provided opposite long grooves, one end of which is open; when the valve body is withdrawn horizontally, it is clamped and fixed at the bottom of the long groove; when the valve body is withdrawn vertically, the valve body is clamped by the upper side wall of the long groove; The valve body fixing assembly is provided with one group, and the sleeve withdrawing device (3) and the sleeve pulling assembly are provided with two groups, and the two groups are arranged horizontally and vertically respectively.

2. The brake valve withdrawal device according to claim 1, characterized in that: The pulling sleeve assembly is a cylinder (7).

3. A method for withdrawing a brake valve sleeve according to claim 1 or 2, comprising a sleeve withdrawing device (3), characterized in that: Connect the inner sleeve connector to the inner sleeve (2), fix the valve body (1) using the valve body fixing assembly, and pull the sleeve withdrawing device (3) and the inner sleeve (2) together through the sleeve pulling assembly to withdraw the inner sleeve (2) from the valve body (1); When the valve body is withdrawn horizontally and vertically at the same time, first install the vertical withdrawer into the vertical inner sleeve, then push the valve body into the slot to the bottom of the slot, so that the clamping plate of the vertical withdrawer is clamped into the clamping slot, and then the clamping plate of the horizontal withdrawer is clamped into the clamping slot, and the horizontal withdrawer is installed into the horizontal inner sleeve by rotating the horizontal withdrawer.

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