Disassembling and assembling tool special for temperature control valve of air compressor of electric locomotive

Abstract

The utility model discloses a special dismounting tool for an electric locomotive air compressor temperature control valve, which comprises a base, a clamping device and a press-fitting assembly, the temperature control valve is positioned right below the press-fitting assembly by the clamping device, the press-fitting assembly comprises a support column, a pressing column, a deformation ring, a support beam, a snap spring clamping needle, a pressing cover plate and a contraction spring leaf, one side of the deformation ring is provided with a deformation notch, and the other side of the deformation ring is provided with a compression spring. The two snap spring clamping needles are arranged at the lower end of the deformation ring and located on the two sides of the deformation notch, the other side of the deformation ring is connected with the supporting beam, the pressing column is arranged along the central axis of the deformation ring, the lower end of the pressing column is fixedly connected with the pressing cover plate, and the 2N shrinkage spring pieces are divided into two groups, symmetrically located on the two sides of the deformation notch and obliquely arranged. The upper end of the deformation ring is fixedly connected with the lower end of the deformation ring; according to the disassembly and assembly tool, two independent operations of pressing the top spring and compressing the snap spring in the original manual installation process are optimized into a synchronous action, the operation is simpler and more convenient, the assembly efficiency is high, and batch assembly of the temperature control valves can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of clamp disassembly and assembly of retaining springs, in particular to a special disassembly and assembly tool for a temperature control valve of an air compressor of an electric locomotive. Background Art

[0002] The air compressor of the Harmony electric locomotive is an important equipment that provides gas source for the whole vehicle. Among them, the temperature control valve is an important oil temperature monitoring safety protection device of the air compressor. Once the oil temperature of the air compressor is too high, the temperature sensing element inside the temperature control valve will be deformed by heat to relieve pressure to ensure the safety of the air compressor. If the temperature control valve fails or its internal safety device is not installed securely, it is very easy to cause the oil temperature to not reach the limit value, and the temperature control valve will release pressure in advance or fail to release pressure, causing explosions or high-temperature and high-pressure air compressor oil spraying out and other extremely dangerous safety accidents, affecting the safety of internal parts of the locomotive and even the safety of personnel's lives;

[0003] Since the temperature control valve has many internal parts and there are pressure devices such as top springs and retaining springs, the top spring must be compressed and the retaining spring must be installed at the same time during manual operation. The compression and installation in both directions are performed simultaneously, which makes the installation very difficult. The installation tools in the prior art generally use retaining spring calipers, which are combined with independent top spring pressing tools, and are operated simultaneously to achieve disassembly and assembly. This operation is not only time-consuming and labor-intensive, but also extremely unreliable during the installation process, which can easily cause the top spring and retaining spring to fail to be installed in place, resulting in failure of the temperature control valve during use, causing major safety hazards to locomotives and personnel. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a special disassembly and assembly tool for the temperature control valve of the air compressor of an electric locomotive, thereby solving the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A special disassembly and assembly tool for a temperature control valve of an electric locomotive air compressor comprises a base, a clamping device and a press-fitting assembly. The clamping device is installed on the base. The temperature control valve is clamped and positioned directly below the press-fitting assembly by the clamping device. The press-fitting assembly comprises a support column, a pressure column, a deformation ring, a support beam, a retaining spring clamping needle, a pressure cover plate and a shrinkage spring spring. The central axis of the deformation ring is arranged in a colinear manner with the central axis of the temperature control valve. The diameter of the deformation ring is larger than the diameter of the retaining spring. A deformation notch is arranged on one side of the deformation ring and the deformation notch has radial scaling deformation elasticity. Two retaining spring clamping needles are vertically arranged at the lower end of the deformation ring and are respectively located on both sides of the deformation notch to clamp the two clamping holes of the retaining spring. The other side of the deformation ring is connected to the support column through a support beam to support the ring body. The support column is installed on the base. The pressure cover plate is coaxial with the deformation ring and is located directly below it. The pressure cover plate cooperates with the top spring cover plate to press down the top spring cover plate. The pressure column is arranged along the central axis of the deformation ring, and its lower end is fixedly connected to the pressure cover plate to provide a downward driving force. The 2N compression spring spring pieces are divided into two groups, which are symmetrically located on both sides of the deformation notch. The compression spring spring pieces in the same group are evenly distributed. The upper end of the compression spring spring piece is fixedly connected to the lower end of the deformation ring, and the lower end is fixedly connected to the upper end of the pressure cover plate, and the compression spring spring piece is inclined to generate a deformation component force along the radial direction of the deformation ring.

[0007] Furthermore, it also includes an operating arm, the middle part of which is connected to the pin shaft of the support column, and the end part of which is connected to the pin shaft of the upper end of the pressure column, so as to form a lever structure to apply downward pressure.

[0008] Furthermore, the support beam is a flexible support beam having vertical deformation elasticity, and the yield strength of the flexible support beam is greater than the total yield strength of 2N compression spring sheets.

[0009] Furthermore, it also includes a guide beam, which is located above the support beam, one end of which is fixed on the support column, and the other end is provided with a guide structure, and the pressure column is arranged in the guide structure for guiding the vertical movement of the pressure column.

[0010] Furthermore, the clamping device includes a fixed clamping body and a movable clamping body. The movable clamping body can be laterally slidably arranged on the base, and the fixed clamping body is adjustably installed on the base. V-shaped clamping surfaces are arranged on the opposite surfaces of the fixed clamping body and the movable clamping body for jointly clamping the outer peripheral surface of the temperature control valve. The clamping center constructed by the V-shaped clamping surface is located on the central axis of the deformation ring.

[0011] Compared with the prior art, the utility model of a special disassembly and assembly tool for the temperature control valve of an electric locomotive air compressor has the following beneficial effects:

[0012] 1. The pressure column drives the pressure cover plate to compress the top spring to unload the pressing force. At the same time, the downward driving force drives the deformation ring to deform radially through the shrink spring spring. The circlip clamping needle at the lower end of the deformation ring clamps the circlip and drives it to shrink and deform so that it can be put into the valve hole. The disassembly and assembly tool optimizes the two independent operations of pressing the top spring and compressing the circlip at the same time in the original manual installation process into one synchronous action, which is easier to operate and has high assembly efficiency, and can realize batch installation of temperature control valves;

[0013] 2. Combined with the flexible support beam, not only the compression and placement of the retaining spring are synchronized when the top spring is pressed down, but also the compression distance of the top spring is large, and the retaining spring is installed more securely. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural diagram of the disassembly and assembly tool of the utility model.

[0015] In the figure: 1. base; 2. support column; 3. operating arm; 4. compression spring spring; 5. guide beam; 6. pressure column; 7. guide structure; 8. deformation ring; 9. retaining spring clamping needle; 10. V-shaped clamping surface; 11. locking handle; 12. adjustment slot; 13. movable clamping body; 14. pressure cover plate; 15. support beam; 16. fixed clamping body. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only the best embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] A top spring is arranged in the valve hole of the temperature control valve, and a cover plate is arranged on the upper end of the top spring. The top spring is limited by a retaining spring at the end of the valve hole. Therefore, when the retaining spring of the temperature control valve is clamped and disassembled, the top spring needs to be pressed down first, and the pressing force can be unloaded before the operation can be performed. Therefore, this embodiment provides a special disassembly and assembly tool for the temperature control valve of the air compressor of an electric locomotive, which is specially used for disassembling and assembling the retaining spring of such a valve structure, referring to Figure 1 , the special disassembly and assembly tool comprises a base 1, a clamping device and a press-fit assembly;

[0018] Among them, the clamping device is used to clamp the fixed upright temperature control valve body, which is installed on the base 1. The temperature control valve is clamped and positioned directly below the press-fit assembly by the clamping device. The clamping device includes a fixed clamping body 16 and a movable clamping body 13. In order to facilitate quick clamping, an adjustment groove 12 is arranged horizontally on the base 1. The lower end of the movable clamping body 13 is inserted into the adjustment groove 12 and can slide horizontally along the adjustment groove 12. A clamping mechanism is arranged on the movable clamping body 13. The clamping mechanism includes a clamping block (not shown in the figure) clamped in the adjustment groove 12, an adjustment bolt and a locking handle 11. The clamping block is located at the lower end of the adjustment bolt. The rotating locking handle 11 drives the adjustment bolt to move, so that the clamping block releases or clamps the adjustment groove 12 to achieve a locking or sliding operation; V-shaped clamping surfaces 10 are arranged on the opposite surfaces of the fixed clamping body 16 and the movable clamping body 13, which are used to jointly clamp the outer peripheral surface of the temperature control valve;

[0019] The press-fit assembly is used to simultaneously realize pressing down the top spring and clamping and lowering the retaining spring, and includes a support column 2, a pressure column 6, a deformation ring 8, a support beam 15, a retaining spring clamping needle 9, a pressure cover plate 14 and a compression spring spring 4;

[0020] Refer again Figure 1 The deformation ring 8 is arranged horizontally, and its structure is similar to that of a circlip, but its diameter is larger than that of the circlip. Similarly, a deformation notch is arranged on one side of the deformation ring 8, and it adopts an easily deformable material to enable it to have radial scaling deformation elasticity. The other side of the deformation ring 8 is connected to the support column 2 through a transverse support beam 15 to support the ring body. The central axis of the deformation ring 8 should be colinear with the central axis of the valve hole of the temperature control valve. Two circlip clamping needles 9 are vertically arranged at the lower end of the deformation ring 8 and are respectively located on both sides of the deformation notch. The circlip clamping needles 9 are similar to the clamp body of a caliper and can be inserted into and clamp the two clamping holes of the circlip. When the deformation ring 8 contracts and deforms radially, the deformation notch shrinks, and the circlip clamping needles 9 move relatively to clamp and drive the circlip to deform and shrink in diameter.

[0021] The pressure cover plate 14 is used to contact the top spring cover plate and press the top spring under the pressure of the pressure column 6. The outer diameter of the pressure cover plate 14 is less than or equal to the outer diameter of the top spring cover plate, and a concave groove adapted to the top of the top spring cover plate is arranged below it. The pressure cover plate 14 is coaxial with the deformation ring 8 and is located directly below it. The pressure column 6 is used to provide a downward driving force along the center axis of the valve hole. It is arranged along the center axis of the deformation ring 8, and its lower end is fixedly connected to the pressure cover plate 14. In order to improve the press-fitting operation performance, the top pin of the pressure column 6 is connected to the operating arm 3 to construct a lever effort-saving mechanism, and the middle pin is connected and supported on the support column 2;

[0022] The compression spring spring piece 4 is used to convert the downward pressure of the pressure column 6 into the radial deformation force of the deformation ring 8, which is used to synchronously realize the diameter reduction deformation of the retaining spring. Among them, there are 2N compression spring spring pieces 4, N≥1, and they are evenly divided into two groups. The two groups of compression spring spring pieces 4 are symmetrically distributed on the ring bodies on both sides of the deformation notch, so as to obtain the same deformation amount on the front and rear ring bodies of the deformation ring 8. The compression spring spring pieces 4 in the same group are evenly distributed. The compression spring spring piece 4 is tilted, and its upper end is fixedly connected to the lower end of the deformation ring 8, and the lower end is fixedly connected to the upper end of the pressure cover plate 14. Under the support of the support beam 15, the pressure column 6 drives the pressure cover plate 14 to move, drives the compression spring spring piece 4 to deform and generate tensile force, and the tensile force generates a radial component force, drives the deformation ring 8 to radially shrink and deform, and synchronously clamps the retaining spring to achieve downward movement and diameter reduction.

[0023] In this embodiment, the support beam 15 is used to support the deformation ring 8 to cooperate with the shrinkage spring spring piece 4 to achieve inward shrinkage deformation. In order to synchronously realize the downward placement of the reduction spring, the support beam 15 is preferably a flexible support beam 15, which has vertical deformation elasticity, but the flexible support beam 15 should satisfy that the yield strength of the flexible support beam 15 is greater than the total yield strength of 2N shrinkage spring spring pieces 4. During the pressure process, the shrinkage spring spring piece 4 is easier to deform, and the yield strength difference will generate a radial force for locking the spring during the downward pressure of the pressure column 6. Then, as the support beam 15 deforms, the spring moves downward synchronously with the deformation ring 8 to achieve automatic placement; after completing the downward pressure action, the shrinkage spring spring piece 4 first deforms and rebounds, so that the spring can be fixed in the valve hole of the temperature control valve, completing a compression installation process similar to that of a spring pliers. As the pressure column 6 continues to move upward, the top spring resumes gradually applying pressure and is limited on the spring.

[0024] In this embodiment, in order to adapt to the clamping of temperature control valves of various specifications and ensure that the pressure column 6 moves along the central axis of the valve hole of the temperature control valve, the clamping center constructed by the four V-shaped clamping surfaces 10 should be located on the central axis of the deformation ring 8, and the central axis of the deformation ring 8 should be located on the central axis of the valve hole of the temperature control valve. Therefore, the fixed clamping body 16 or the support column 2 needs to be set to be adjustable. By adjusting the clamping center or the position of the deformation ring 8, the two are always in line, and the fixed clamping body 16 or the support column 2 can be detachably connected to the base 1 through the waist-shaped hole; in addition, a vertical guide structure 7 is set to ensure that the pressure column 6 moves along the central axis of the valve hole of the temperature control valve, and a guide beam 5 is fixedly and laterally set on the support column 2. The guide structure 7 is located at the end of the guide beam 5. The guide structure 7 is a guide sleeve, and the pressure column 6 is inserted into the guide sleeve. Under the lever drive of the operating arm 3, it always maintains vertical movement to improve the assembly control accuracy.

[0025] The directional words such as "front", "back", "up", "down", "side", "end", "horizontal", "inside", and "vertical" mentioned in this article are described based on Figure 1The orientation relationship or coordinate relationship shown in the corresponding drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation;

[0026] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the terms "on" and "inside" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special disassembly and assembly tool for the temperature control valve of an electric locomotive air compressor, characterized in that: It includes a base, a clamping device and a press-fitting assembly, the clamping device is installed on the base, the temperature control valve is clamped by the clamping device and positioned directly below the press-fitting assembly, the press-fitting assembly includes a support column, a pressure column, a deformation ring, a support beam, a retaining spring clamping needle, a pressure cover plate and a shrinkage spring spring, the center axis of the deformation ring is arranged in a colinear manner with the center axis of the temperature control valve, the diameter of the deformation ring is larger than the diameter of the retaining spring, one side of the deformation ring is provided with a deformation notch, and has radial scaling deformation elasticity, the two retaining spring clamping needles are vertically arranged at the lower end of the deformation ring, and are respectively located on both sides of the deformation notch, for clamping the two clamping holes of the retaining spring, and the other side of the deformation ring is connected to the support beam The support column is used to support the ring body. The support column is installed on the base. The pressure cover plate is coaxial with the deformation ring and is located directly below it. The pressure cover plate cooperates with the top spring cover plate to press down the top spring cover plate. The pressure column is arranged along the central axis of the deformation ring, and its lower end is fixedly connected to the pressure cover plate to provide a downward driving force. The 2N compression spring spring sheets are divided into two groups, which are symmetrically located on both sides of the deformation notch. The compression spring spring sheets in the same group are evenly distributed. The upper end of the compression spring spring sheet is fixedly connected to the lower end of the deformation ring, and the lower end is fixedly connected to the upper end of the pressure cover plate, and the compression spring spring sheet is inclined to generate a deformation component force along the radial direction of the deformation ring.

2. The special disassembly and assembly tool for the temperature control valve of the electric locomotive air compressor according to claim 1 is characterized by: It also includes an operating arm, the middle part of which is connected to the pin shaft of the support column, and the end part of which is connected to the pin shaft of the upper end of the pressure column, so as to form a lever force-saving structure to apply downward pressure.

3. The special disassembly and assembly tool for the temperature control valve of the electric locomotive air compressor according to claim 2 is characterized in that: The support beam is a flexible support beam having vertical deformation elasticity, and the yield strength of the flexible support beam is greater than the total yield strength of 2N compression spring sheets.

4. The special disassembly and assembly tool for the temperature control valve of the electric locomotive air compressor according to claim 3 is characterized by: It also includes a guide beam, which is located above the support beam, one end of which is fixed to the support column, and the other end is provided with a guide structure, and the pressure column is arranged in the guide structure to guide the vertical movement of the pressure column.

5. The special disassembly and assembly tool for the temperature control valve of the electric locomotive air compressor according to claim 1 is characterized in that: The clamping device includes a fixed clamping body and a movable clamping body, the movable clamping body can be laterally slidably arranged on the base, the fixed clamping body is adjustably installed on the base, and V-shaped clamping surfaces are arranged on the opposite surfaces of the fixed clamping body and the movable clamping body for jointly clamping the outer peripheral surface of the temperature control valve, and the clamping center constructed by the V-shaped clamping surface is located on the central axis of the deformation ring.

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