Impeller assembling tool for pressure reducing valve

Abstract

The utility model discloses a pressure reducing valve impeller assembling tool which comprises a mounting frame, a fixing piece arranged on the mounting frame and used for fixing a valve body and a positioning piece used for guiding and positioning an impeller, and the fixing piece and the positioning piece are arranged oppositely. According to the pressure reducing valve impeller assembling tool, the space assembling position size of the valve body and the impeller can be rapidly positioned, the valve body and the impeller are accurately aligned and fastened and assembled, the quality problem that threads are damaged when the impeller is assembled is completely eradicated, assembling is efficient and rapid, and the production efficiency can be greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of vacuum circuit breaker production and maintenance, and in particular to an assembly tool for a pressure reducing valve impeller. Background Art

[0002] In recent years, locomotives and EMUs on domestic trunk lines have entered the advanced maintenance process one after another, and vacuum circuit breakers must be overhauled in the corresponding maintenance process. During the overhaul process, the air leakage failure rate of the key accessory pressure reducing valve is very high, and its replacement rate reaches 95%. The pressure reducing valve is an imported accessory, which is expensive in itself. A large number of replacements make the maintenance cost of vacuum circuit breakers very high. In order to reduce costs, technical personnel in this field have carried out research on the localization of pressure reducing valves. During its assembly process, it was found that the impeller (the material of the impeller is plastic) is very easy to damage the impeller thread when assembling it with the valve body, resulting in no replacement of accessories and the scrapping of the entire pressure reducing valve. Secondly, the impeller slag damaged during the assembly process is easy to fall into the main air path of the valve body, bringing secondary quality risks to the pressure reducing valve. Due to the above-mentioned assembly difficulties, the overhaul production efficiency is greatly reduced. According to the content of the operation, the impeller thread is easily damaged during the assembly process because there is a spring between the impeller and the valve body. When the impeller is directly assembled by hand, the assembly thread cannot be aligned at one time, and repeated assembly causes thread damage. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a pressure reducing valve impeller assembly tool, which can quickly locate the spatial assembly position size of the valve body and the impeller, so that the two are accurately aligned and tightened for assembly, eliminating the quality problem of damaging the thread during impeller assembly. The assembly is efficient and quick, and can greatly improve production efficiency.

[0004] The technical solution provided by the utility model is as follows:

[0005] A pressure reducing valve impeller assembly tool comprises a mounting frame, a fixing piece arranged on the mounting frame for fixing a valve body and a positioning piece for guiding and positioning the impeller, wherein the fixing piece and the positioning piece are arranged opposite to each other.

[0006] Preferably, a gripping rod for connecting the valve body and the impeller is provided on the positioning member.

[0007] Preferably, an operating handle is provided at the upper end of the gripping rod, and a clamping groove for fixing and cooperating with the impeller is provided at the lower end of the gripping rod.

[0008] Preferably, a locking member for locking the gripping rod is provided on the positioning member.

[0009] Preferably, the locking member comprises a spring-type spherical positioning pin and a spring for controlling the horizontal movement of the spring-type spherical positioning pin, and the gripping rod is provided with a locking hole for cooperating with the spring-type spherical positioning pin.

[0010] Preferably, the fixing member comprises two oppositely arranged buckle plates, and the two buckle plates form an accommodating space for placing and clamping the valve body.

[0011] Preferably, the mounting frame comprises a base plate and a support plate arranged on the base plate, the fixing member is arranged on the base plate, and the positioning member is arranged on the support plate.

[0012] The present application has the following advantages over the prior art:

[0013] The pressure reducing valve impeller assembly tool of the present application can quickly locate the spatial assembly position size of the valve body and the impeller through the provision of fixing parts and positioning parts. The grasping rod can accurately grasp the impeller and overcome the reaction force of the compression spring between the impeller and the valve body, so that the two are accurately aligned and fastened for assembly, eliminating the quality problem of damaging the thread during impeller assembly. The assembly is efficient and quick, which can greatly improve production efficiency. In addition, the tooling structure is simple and the operation is convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of the pressure reducing valve impeller assembly tooling in the embodiment of the utility model;

[0016] Figure 2 It is a partial structural schematic diagram of the pressure reducing valve impeller assembly tool in the embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the pressure reducing valve impeller assembly tool after the valve body is placed in the embodiment of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the pressure reducing valve impeller assembly tool in the embodiment of the utility model when in use.

[0019] Reference numerals:

[0020] 1. Mounting frame; 11. Base plate; 12. Support plate; 2. Valve body; 3. Fixing piece; 31. Buckle plate; 4. Impeller; 5. Positioning piece; 6. Grab lever; 61. Operating handle; 62. Slot; 7. Locking piece; 71. Spring-type spherical positioning pin; 72. Spring. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] As shown in Figures 1-4, an embodiment of the utility model provides a pressure reducing valve impeller assembly tool, including a mounting frame 1, a fixing member 3 arranged on the mounting frame 1 for fixing the valve body 2, and a positioning member 5 for guiding and positioning the impeller 4, and the fixing member 3 and the positioning member 5 are arranged opposite to each other.

[0023] In this embodiment, the positioning member 5 is provided with a gripping rod 6 for connecting the valve body 2 and the impeller 4. The upper end of the gripping rod 6 is provided with an operating handle 61, and the lower end of the gripping rod 6 is provided with a clamping groove 62 for fixing and cooperating with the impeller 4. The assembly operation of the impeller 4 consists of two actions: sliding up and down and rotating around the axis. The gripping rod 6 adopts a round shaft and a positioning guide hole to cooperate, which can ensure the gripping rod 6 to slide up and down and rotate around the axis. The clamping groove 62 adopts a cross groove design to firmly grasp the impeller 4 to control its assembly direction and can also implement torque operations.

[0024] In this embodiment, the positioning member 5 is provided with a locking member 7 for locking the gripping rod 6. The locking member 7 includes a spring-type spherical positioning pin 71 and a spring 72 for controlling the horizontal movement of the spring-type spherical positioning pin 71. The gripping rod 6 is provided with a locking hole for cooperating with the spring-type spherical positioning pin 71. In order to quickly lock the gripping rod 6 at the set upper and lower positions, a spring-type spherical positioning pin 71 is designed on the positioning member 5 to cooperate with the ball hole on the gripping rod 6, so that the upper and lower positions of the gripping rod 6 can be quickly locked. When the rod is to move up and down, the gripping rod 6 can be rotated to disengage the two and unlock them.

[0025] In this embodiment, the fixing member 3 includes two gusset plates 31 arranged opposite to each other, and the two gusset plates 31 form an accommodating space for placing and clamping the valve body 2. The two gusset plates 31 and the mounting frame 1 form three surfaces as positioning constraints. This design can accurately locate the assembly position of the valve body 2 and the impeller 4. The frame structure makes it faster and more efficient to install the valve body 2 into the tooling work position and take it out after the operation. The structural design is simple and practical.

[0026] In this embodiment, the mounting frame 1 includes a base plate 11 and a support plate 12 disposed on the base plate 11 , the fixing member 3 is disposed on the base plate 11 , and the positioning member 5 is disposed on the support plate 12 .

[0027] The working process of the pressure reducing valve impeller assembly tooling of the present application is as follows: first, move the grasping rod 6 upward to the locking position, install the valve body 2 between the buckle plates 31, place the compression spring at the center of the valve body 2, place the impeller 4 on the compression spring, rotate the operating handle 61 to drive the grasping rod 6 to rotate so that the grasping rod 6 disengages from the spring-type spherical positioning pin 71 and moves the grasping rod 6 downward to the slot 62 at the end of the grasping rod to clamp with the impeller 4, continue to move downward to compress the spring so that the axial thread of the impeller 4 and the hole thread of the valve body 2 are aligned and tightened; pull the operating handle 61 upward and align the direction of the spring-type spherical positioning pin 71 until the grasping rod 6 is locked, and then take out the assembled valve body assembly to complete the entire operation process.

[0028] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pressure reducing valve impeller assembly tool, characterized in that: It comprises a mounting frame (1), a fixing member (3) arranged on the mounting frame (1) for fixing a valve body (2), and a positioning member (5) for guiding and positioning an impeller (4), wherein the fixing member (3) and the positioning member (5) are arranged opposite to each other.

2. The pressure reducing valve impeller assembly tool according to claim 1, characterized in that: The positioning member (5) is provided with a gripping rod (6) for connecting the valve body (2) and the impeller (4).

3. The pressure reducing valve impeller assembly tool according to claim 2, characterized in that: An operating handle (61) is provided at the upper end of the gripping rod (6), and a clamping groove (62) for fixing and cooperating with the impeller (4) is provided at the lower end of the gripping rod (6).

4. The pressure reducing valve impeller assembly tool according to claim 2, characterized in that: The positioning member (5) is provided with a locking member (7) for locking the gripping rod (6).

5. The pressure reducing valve impeller assembly tool according to claim 4, characterized in that: The locking member (7) comprises a spring-type spherical positioning pin (71) and a spring (72) for controlling the horizontal movement of the spring-type spherical positioning pin (71), and the gripping rod (6) is provided with a locking hole for cooperating with the spring-type spherical positioning pin (71).

6. The pressure reducing valve impeller assembly tool according to any one of claims 1 to 5, characterized in that: The fixing member (3) comprises two pinch plates (31) arranged opposite to each other, and the two pinch plates (31) form an accommodating space for accommodating and clamping the valve body (2).

7. The pressure reducing valve impeller assembly tool according to any one of claims 1 to 5, characterized in that: The mounting frame (1) comprises a base plate (11) and a support plate (12) arranged on the base plate (11); the fixing member (3) is arranged on the base plate (11); and the positioning member (5) is arranged on the support plate (12).

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