Repair tool for water pressurization unit of motor train unit

Abstract

The utility model discloses a motor train unit water pressurization unit repairing tool which comprises a support, a lower clamp is arranged at the bottom of the support and is of a funnel-shaped structure, and the inner wall of the lower clamp is matched with the outer wall of a lower shell of a water pressurization unit. A telescopic mechanism is arranged at the top of the support. A telescopic rod of the telescopic mechanism stretches downwards. The upper clamp is fixed to the end of a telescopic rod of the telescopic mechanism, the structure of the upper clamp is similar to that of the lower clamp, the upper clamp and the lower clamp are symmetrically arranged, and the inner wall of the upper clamp is matched with the outer wall of an upper shell of the water pressurization unit. A control box is arranged on the outer side of the support and electrically connected with a cylinder body of the telescopic mechanism. The lower shell and the upper shell are limited through the edges of the large opening ends of the lower clamp and the upper clamp, meanwhile, the outer walls of the lower shell and the upper shell at the two ends of the spring are attached to the inner walls of the lower clamp and the upper clamp respectively through the elastic force of the spring, and the up-down clamping state is formed; and the lower shell and the upper shell are prevented from rotating, displacing or popping out in the funnel under the influence of the elastic force of the spring.

Description

Technical Field

[0001] This utility model relates to the field of maintenance tooling technology, and in particular to a repair tooling for a high-speed train water pressurization unit. Background Technology

[0002] As a crucial component of modern high-speed transportation, high-speed trains rely heavily on customer service facilities such as lighting, audio-visual broadcasting, air conditioning, and water supply and sanitation systems, all of which significantly impact passenger experience. The stability and reliability of these systems directly affect passenger comfort and train operation, as well as the fulfillment of essential passenger needs for drinking water, hygienic toilets, and a clean interior environment. Failures in these systems can range from minor passenger complaints to disruptions to the entire railway line's operational schedule. The water pressurization unit, a core component of the water supply system, provides stable water pressure and volume to passengers and other train systems during operation. A malfunction in this unit can lead to unstable water supply, potentially causing water outages, directly affecting the quality of water supply and train operation. Furthermore, as a high-value component, overcoming the challenges of repairing and reusing the water pressurization unit is essential for cost-effective maintenance. Therefore, the repair of high-speed train water pressurization units is of paramount importance.

[0003] The structure of the water booster unit of the EMU is as follows Figure 5 As shown, the water booster unit 6 includes a lower housing 61, an upper housing 62, a rubber diaphragm 63, a spring 64, a limiting plate 65, and a clamp 66. The spring 64 inside the water booster unit 6 is in a compressed state. During disassembly, after opening the clamp 66, the lower housing 61 and upper housing 62 are instantly ejected by the spring 64, potentially injuring workers. During installation, the lower housing 61 and upper housing 62 are also affected by the spring 64, making it difficult to manually compress and install the spring 64. Due to the limitations of manual operation, manual repair and installation often fail to achieve high precision. This can lead to unstable performance of the repaired water booster unit, making it prone to secondary failures and affecting the safety and reliability of the EMU operation. Furthermore, traditional repair methods are inefficient, cumbersome, and time-consuming. This makes it difficult to quickly restore the EMU's water booster unit to operation when a failure occurs, affecting the efficiency and service quality of the EMU operation.

[0004] Among existing repair tools, such as the Chinese utility model patent with patent number CN 202221656501.1, which discloses a pressing fixture for a high-speed train water booster unit, the fixture includes a support frame and a base installed at the bottom of the support frame. A disassembly and assembly mechanism is provided between the support frame and the base. A lifting platform is movably installed on the inner side of the support frame. A hydraulic jack is installed on the top surface of the base, and a support rod is provided at the top of the hydraulic jack. The top of the support rod contacts the bottom surface of the lifting platform. The hydraulic jack and clamping screw provide sufficient force to press the tank and clamp, facilitating the pressing operation of the upper and lower tanks. However, this device also has the following drawbacks: 1. The contact area between the pressure ring and the outer shell of the water booster unit is relatively small. 1. Indentations are easily left on the outer shell of the water booster unit. If the operation is improper and the jack pressure is too high, the indentations may be deepened, affecting the structural performance of the water booster unit, or the outer shell of the water booster unit may be squeezed and deformed; 2. When the water booster unit is installed or disassembled, the spring inside is constantly deformed during the compression process. The direction of the elastic force at both ends of the spring changes with the deformation of the spring. This tool does not limit the outer shell of the water booster unit. The upper and lower shells of the water booster unit are easily affected by the spring force and rotate or shift on the pressure ring, affecting the installation or disassembly operation of the water booster unit; 3. This device uses a hand-operated jack. When operating the jack, the operator cannot simultaneously adjust the water booster unit shell, making the operation inconvenient. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a repair tooling for the water booster unit of a high-speed train that can stably support the upper and lower shells of the water booster unit and is easy to operate.

[0006] This utility model is achieved through the following technical solution:

[0007] A repair fixture for a high-speed train water pressurization unit includes a bracket 1, and also includes:

[0008] The lower clamp 2 is set at the bottom of the bracket 1 and is used to position the lower housing 61 of the water pressurization unit 6;

[0009] Telescopic mechanism 3 is set on the top of bracket 1. The telescopic rod 32 of telescopic mechanism 3 extends and retracts downward to push the upper clamp 4 up and down.

[0010] The upper clamp 4 is fixed to the end of the telescopic rod 32 of the telescopic mechanism 3 and is used to position the upper housing 62 of the water pressurization unit 6.

[0011] The control box 5 is located on the outside of the bracket 1 and is electrically connected to the telescopic mechanism 3. It is used to control the operation of the telescopic mechanism 3.

[0012] Furthermore, the inner wall of the lower clamp 2 is adapted to the outer wall of the lower housing 61 of the water pressurization unit 6; the inner wall of the upper clamp 4 is adapted to the outer wall of the upper housing 62 of the water pressurization unit 6.

[0013] Furthermore, both the lower clamp 2 and the upper clamp 4 are funnel-shaped structures with a large opening at one end and a small opening at the other end.

[0014] Furthermore, the lower clamp 2 and the upper clamp 4 are symmetrically arranged.

[0015] Furthermore, the lower clamp 2 and the upper clamp 4 have a horizontal outer edge 21 on the outer side of the small opening of the funnel-shaped structure, and several reinforcing ribs 22 are provided between the horizontal outer edge 21 and the lower clamp 2 and the upper clamp 4.

[0016] Furthermore, the base 11 of the bracket 1 is provided with at least three mounting seats 14, and the mounting seats 14 are provided with threaded holes. The horizontal outer edge 21 of the lower clamp 2 is mounted on the threaded holes of the mounting seats 14 by bolts.

[0017] Furthermore, the telescopic rod 32 of the telescopic mechanism 3 is provided with a mounting bracket 33 at its end. The mounting bracket 33 is provided with at least two threaded holes, and the horizontal outer edge 21 of the upper clamp 4 is mounted on the threaded holes of the mounting bracket 33 by bolts.

[0018] Furthermore, when the lower housing 61 of the water booster unit 6 is placed on the lower clamp 2, the height difference between the edge of the large end of the lower clamp 2 and the outer edge of the lower housing 61 of the water booster unit 6 does not exceed 5mm.

[0019] When the upper housing 62 of the water booster unit 6 is placed on the upper clamp 4, the height difference between the edge of the large opening of the upper clamp 4 and the outer edge of the upper housing 62 of the water booster unit 6 does not exceed 5mm.

[0020] Furthermore, the telescopic mechanism 3 is an electric hydraulic cylinder or an electric pneumatic cylinder.

[0021] Furthermore, the control box 5 is equipped with a pressure regulating valve 51, which is used to control the extension and retraction rate of the telescopic mechanism 3.

[0022] The working principle of this utility model:

[0023] This utility model uses a lower clamp 2 and an upper clamp 4 to clamp the lower housing 61 and upper housing 62 of the limiting water pressurization unit 6. The lower clamp 2 is fixedly installed on the base 11 of the bracket 1 as a fixed end, and the telescopic mechanism 3 installed on the top support beam 13 of the bracket 1 serves as a power component. The upper clamp 4 is fixedly installed on the mounting bracket 33 at the front end of the telescopic rod 32 of the telescopic mechanism 3 as a movable end. The lower clamp 2 and the upper clamp 4 are arranged symmetrically above and below. The telescopic rod 32 of the telescopic mechanism 3 extends and retracts, causing the upper clamp 4 to close or separate from the lower clamp 2. When the water booster unit 6 is disassembled, the upper clamp 4 presses down on the upper housing 62 of the water booster unit 6 to prevent the spring 64 inside the water booster unit 6 from suddenly springing out. When the telescopic rod 32 of the telescopic mechanism 3 retracts, it drives the upper clamp 4 to slowly rise, assisting the spring 64 inside the water booster unit 6 to slowly unfold and relieve the force. When the water booster unit 6 is repaired and reassembled, the upper clamp 4 clamps and limits the upper housing 62 of the water booster unit 6. The telescopic rod 32 of the telescopic mechanism 3 extends, driving the upper clamp 4 and the upper housing 62 to slowly move down, while slowly compressing the spring 64. The lower housing 61 and upper housing 62 of the water-boosting unit 6 are closed. During the closing process, the lower housing 61 and upper housing 62 are limited by the large-mouth edges of the lower clamp 2 and the upper clamp 4. At the same time, the elastic force of the spring 64 causes the outer walls of the lower housing 61 and upper housing 62 at both ends of the spring 64 to fit against the inner walls of the lower clamp 2 and the upper clamp 4, forming an upper and lower clamping state to prevent the lower housing 61 and upper housing 62 from rotating or popping out of the funnel due to the elastic force of the spring 64.

[0024] The advantages of this utility model compared to the prior art are:

[0025] The lower clamp 2 and upper clamp 4 of this utility model have a trumpet-shaped structure, and their inner walls are adapted to the outer walls of the lower shell 61 and upper shell 62 of the water pressurization unit 6, respectively. The water pressurization unit 6 has a large contact area with the tooling, so that the lower shell 61 and upper shell 62 of the water pressurization unit 6 will not be squeezed out with indentations or deformed by squeezing; thus ensuring the structural performance of the water pressurization unit 6.

[0026] This invention uses the large-mouth edges of the lower clamp 2 and the upper clamp 4 to limit the lower housing 61 and the upper housing 62 of the water pressurization unit 6, while simultaneously clamping the lower housing 61 and the upper housing 62 to prevent them from rotating or popping out of the funnel due to the elastic force of the spring 64, which would affect the installation and disassembly of the water pressurization unit 6. Workers do not need to adjust the position of the lower housing 61 and the upper housing 62 again, improving the efficiency of the water pressurization unit 6 repair work and thus shortening the maintenance time of the EMU's water supply and drainage sanitation system.

[0027] The lower clamp 2 and upper clamp 4 of this utility model are fixed to the mounting base 14 and mounting bracket 33 respectively by bolts. They can be replaced with lower clamp 2 and upper clamp 4 that match different models of water booster units 6 for installation and use, and have wide applicability.

[0028] This utility model controls the upper clamp 4 through the hydraulic cylinder or air cylinder of the telescopic mechanism 3, and controls the telescopic speed of the telescopic mechanism 3 through the pressure regulating valve 51 of the hydraulic cylinder or air cylinder. This makes it easier for workers to control the installation and disassembly efficiency of the water booster unit 6, allowing workers to concentrate on observing and adjusting the disassembly and installation of the water booster unit housing. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0030] Figure 2 This is an exploded view of the present invention;

[0031] Figure 3 This is a schematic diagram showing the installation status of the water booster unit of this utility model;

[0032] Figure 4 This is a schematic diagram showing the operation of the telescopic mechanism during the installation of the water booster unit of this utility model;

[0033] Figure 5 Exploded view of the water pressurization unit;

[0034] Figure 6 This is a schematic diagram of the electrical control and pneumatic circuit of the telescopic mechanism of this utility model.

[0035] Numbering on the map:

[0036] 1-Bracket, 11-Base, 12-Column, 13-Support beam, 14-Mounting base;

[0037] 2-Lower clamp, 21-Horizontal outer edge, 22-Reinforcing rib;

[0038] 3-Telescopic mechanism, 31-Cylinder body, 32-Telescopic rod, 33-Mounting bracket;

[0039] 4-Upper clamp;

[0040] 5-Control box, 51-Pressure regulating valve;

[0041] 6-Water booster unit, 61-Lower housing, 62-Upper housing, 63-Rubber diaphragm, 64-Spring, 65-Limiting plate, 66-Clamp. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solution of this utility model, the specific embodiments are described in detail below with reference to the accompanying drawings.

[0043] Example:

[0044] like Figure 1-4 As shown, a repair fixture for a high-speed train water pressurization unit includes a bracket 1, a lower clamp 2, a telescopic mechanism 3, an upper clamp 4, and a control box 5.

[0045] In an embodiment, such as Figure 2 As shown, the bracket 1 includes a base 11, a column 12, and a support beam 13. The column 12 is vertically mounted on the base 11, and the support beam 13 is horizontally mounted on the top of the column 12. The base 11 has a "U" or "V" shaped structure, which ensures the support range of the base 11 while ensuring that the space in the middle of the base 11 does not affect the installation of the lower housing 61 of the water booster unit 6.

[0046] In an embodiment, such as Figure 2 As shown, the base 11 of the bracket 1 is provided with four mounting seats 14, each with threaded holes. The horizontal outer edge 21 of the lower clamp 2 is bolted into the threaded holes of the mounting seats 14. The telescopic rod 32 of the telescopic mechanism 3 is provided with a mounting bracket 33, which has four threaded holes. The horizontal outer edge 21 of the upper clamp 4 is bolted into the threaded holes of the mounting bracket 33. When it is necessary to disassemble and assemble different models of water booster units 6, the lower clamp 2 and upper clamp 4 that match the different models of water booster units 6 can be replaced for installation and use.

[0047] In an embodiment, such as Figure 1 , 2 As shown, the lower clamp 2 and the upper clamp 4 have similar structures and are arranged symmetrically. The lower clamp 2 and the upper clamp 4 are funnel-shaped. The inner wall of the lower clamp 2 is adapted to the outer wall of the lower shell 61 of the water pressurization unit 6 and is used to position the lower shell 61 of the water pressurization unit 6. The inner wall of the upper clamp 4 is adapted to the outer wall of the upper shell 62 of the water pressurization unit 6 and is used to position the upper shell 62 of the water pressurization unit 6. A horizontal outer edge 21 is provided on the outer side of the small opening of the funnel-shaped structure of the lower clamp 2 and the upper clamp 4. Several reinforcing ribs 22 are provided between the horizontal outer edge 21 and the lower clamp 2 and the upper clamp 4 to strengthen the structural strength of the lower clamp 2 and the upper clamp 4.

[0048] In an embodiment, such as Figure 1 , 2As shown, the inner diameter of the large opening of the lower clamp 2 and the upper clamp 4 is larger than the outer diameter at the junction of the outer wall and outer edge of the lower housing 61 and the upper housing 62 of the water pressurization unit 6, but smaller than the outer diameter of the outer edge of the lower housing 61 and the upper housing 62 of the water pressurization unit 6. After the lower housing 61 and the upper housing 62 of the water pressurization unit 6 are placed on the lower clamp 2 and the upper clamp 4, the large opening of the funnel-shaped structure of the lower clamp 2 and the upper clamp 4 contacts the outer edge of the lower housing 61 and the upper housing 62, limiting the lower housing 61 and the upper housing 62 and preventing the lower housing 61 and the upper housing 62 from rotating inside the funnel due to the elastic force of the spring 64, which would affect the installation of the water pressurization unit 6.

[0049] In an embodiment, such as Figure 1-4 As shown, the control box 5 is installed on the outside of the support column 12. The control box 5 is electrically connected to the cylinder 31 of the telescopic mechanism 3 and is used to control the operation of the telescopic mechanism 3. Figure 6 As shown, the telescopic mechanism 3 is a hydraulic cylinder or a pneumatic cylinder. The control box 5 controls the telescopic speed of the telescopic mechanism 3 by adjusting the pressure regulating valve 51, which makes it convenient for the staff to control the installation and disassembly efficiency of the water booster unit 6.

[0050] The working method of this utility model:

[0051] Repairing water booster unit 6:

[0052] Step 1: The staff places the CRH2 series EMU water pressurization unit 6 onto the lower clamp 2, activates the telescopic mechanism 3, and the telescopic rod 32 extends downward, causing the upper clamp 4 to move down and press down on the upper housing 62 of the water pressurization unit 6; then remove the clamp 66 of the water pressurization unit 6, slowly operate the telescopic rod 32 of the telescopic mechanism 3 to retract, the upper clamp 4 slowly rises, and the spring 64 inside the water pressurization unit 6 slowly unfolds at the same time. Once the spring 64 has fully unfolded, the operation of the telescopic mechanism 3 can be stopped, and the disassembly is completed.

[0053] Step 2: The staff replaced the damaged parts of the water booster unit 6 and repaired the damaged parts.

[0054] Step 3: The operator places the lower housing 61 onto the lower clamp 2, and then places the spring 64, the limiting plate 65, the rubber diaphragm 63 and the upper housing 62 on the lower housing 61 in sequence. Then, the telescopic mechanism 3 is activated, and the telescopic rod 32 extends downward, causing the upper clamp 4 to move down and press down on the upper housing 62 of the water pressurization unit 6. The telescopic mechanism 3 is paused, and the operator adjusts the angle of the upper housing 62 to ensure that the upper housing 62 is limited by the upper clamp 4 and that the upper housing 62 is parallel to the lower housing 61.

[0055] Step 4: Activate the telescopic mechanism 3. The telescopic rod 32 continues to extend downward, causing the upper clamp 4 to press down on the upper housing 62 and move it downward. The spring 64 is compressed until the upper housing 62 and the lower housing 61 are closed. Pause the telescopic mechanism 3. The worker installs the clamp 66 on the outer edge of the upper housing 62 and the lower housing 61. After installation, activate the telescopic mechanism 3 to raise the telescopic rod 32. Then remove the repaired and assembled water pressurization unit 6. Finally, weld the clamp 66 firmly.

[0056] Functional Restoration and Testing: After replacing the damaged parts, the tooling of this utility model is used to assist in the assembly of the EMU water pressurization unit and restore its function. Comprehensive functional testing is then conducted using the "CRH2 Series EMU Water Supply and Drainage System Test Bench" to ensure that the EMU water pressurization unit 6 can operate normally and achieve the expected performance indicators.

[0057] Quality Acceptance and Delivery: Conduct quality acceptance testing on the repaired EMU water pressurization unit 6 to ensure that the repair quality meets relevant standards and requirements. Deliver the EMU water pressurization unit 6 to ensure that it can be successfully installed on the EMU and restore the EMU to normal operation.

[0058] The repair tooling technology for the water booster unit 6 of the EMU can effectively restore the function of the water booster unit 6 of the EMU and improve the maintenance efficiency and operation efficiency of the EMU.

[0059] It should be noted that the technical solution of this utility model has been described in detail above, and the principle of this utility model has been described. The above description of the working principle is only for the purpose of helping to understand the core idea of ​​this utility model. It should be pointed out that for those skilled in the art, improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

[0060] Modifications or additions to the described specific embodiments, or substitutions made by those skilled in the art to which this utility model pertains, can be made or replaced in a similar manner, as long as they do not deviate from the structure of this utility model or exceed the scope defined by the claims, and all such modifications and additions shall fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent shall be determined by the appended claims.

Claims

1. A repair fixture for a water pressurization unit of a high-speed train, comprising a bracket (1), characterized in that, Also includes: The lower clamp (2) is set at the bottom of the bracket (1) and is used to position the lower housing (61) of the water pressurization unit (6); Telescopic mechanism (3) is set on top of bracket (1). The telescopic rod (32) of telescopic mechanism (3) extends and retracts downward to push the upper clamp (4) up and down. The upper clamp (4) is fixed to the end of the telescopic rod (32) of the telescopic mechanism (3) and is used to position the upper housing (62) of the water pressurization unit (6); The control box (5) is located outside the bracket (1) and is electrically connected to the telescopic mechanism (3) to control the operation of the telescopic mechanism (3).

2. The repair fixture for the water pressurization unit of a high-speed train according to claim 1, characterized in that: The inner wall of the lower clamp (2) is adapted to the outer wall of the lower housing (61) of the water pressurization unit (6); the inner wall of the upper clamp (4) is adapted to the outer wall of the upper housing (62) of the water pressurization unit (6).

3. The repair fixture for the water pressurization unit of a high-speed train according to claim 2, characterized in that: Both the lower clamp (2) and the upper clamp (4) are funnel-shaped structures with a large opening at one end and a small opening at the other end.

4. The repair fixture for the water pressurization unit of a high-speed train according to claim 3, characterized in that: The lower clamp (2) and the upper clamp (4) are symmetrically arranged.

5. The repair fixture for the water pressurization unit of a high-speed train according to claim 3, characterized in that: The lower clamp (2) and the upper clamp (4) have a horizontal outer edge (21) on the outer side of the small opening of the funnel-shaped structure, and several reinforcing ribs (22) are provided between the horizontal outer edge (21) and the lower clamp (2) and the upper clamp (4).

6. The repair fixture for the water pressurization unit of a high-speed train according to claim 1, characterized in that: The bracket (1) has at least three mounting seats (14) on its base (11). The mounting seats (14) have threaded holes. The horizontal outer edge (21) of the lower clamp (2) is mounted on the threaded holes of the mounting seats (14) by bolts.

7. The repair fixture for the water pressurization unit of a high-speed train according to claim 1, characterized in that: The telescopic mechanism (3) has a mounting bracket (33) at the end of the telescopic rod (32). The mounting bracket (33) has at least two threaded holes. The horizontal outer edge (21) of the upper clamp (4) is mounted on the threaded hole of the mounting bracket (33) by bolts.

8. The repair fixture for the water pressurization unit of a high-speed train according to claim 1, characterized in that: When the lower housing (61) of the water booster unit (6) is placed on the lower clamp (2), the height difference between the edge of the large end of the lower clamp (2) and the outer edge of the lower housing (61) of the water booster unit (6) does not exceed 5mm; When the upper housing (62) of the water booster unit (6) is placed on the upper clamp (4), the height difference between the edge of the large opening of the upper clamp (4) and the outer edge of the upper housing (62) of the water booster unit (6) does not exceed 5mm.

9. The repair fixture for the water pressurization unit of a high-speed train according to claim 1, characterized in that: The telescopic mechanism (3) is an electric hydraulic cylinder or an electric pneumatic cylinder.

10. The repair fixture for the water pressurization unit of a high-speed train according to claim 1, characterized in that: The control box (5) is equipped with a pressure regulating valve (51), which is used to control the extension and retraction rate of the telescopic mechanism (3).

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