An assembly device for a sensing valve piston assembly

Abstract

This utility model discloses an assembly device for a sensor valve piston assembly, including a base, a fixing and limiting mechanism, and a clamping mechanism. The base is equipped with the fixing and limiting mechanism and the clamping mechanism. The fixing and limiting mechanism is used to fix and limit the sensor valve piston assembly on the base. The clamping mechanism assembles the sensor valve piston assembly by rotating a screw. This utility model provides an assembly device for a sensor valve piston assembly, enabling the assembly of sensor valve piston assemblies while ensuring relative fixation during assembly. It has a simple structure, reduces assembly labor intensity, improves assembly production efficiency, and is applicable to the assembly of various types of sensor valve piston assemblies.

Description

Technical Field

[0001] This utility model belongs to the technical field of railway freight car braking equipment systems, specifically relating to an assembly device consisting of a sensor valve piston. Background Technology

[0002] In the field of railway freight car transportation, the reliability of the freight car braking system is directly related to the safety and efficiency of railway transportation. As one of the core components of the freight car braking system, the sensor valve piston assembly achieves intelligent control of the railway freight car braking system through a closed-loop mechanism of "load sensing - signal transmission - pressure regulation - reset feedback." Its core function is to automatically adjust the braking intensity according to the vehicle load without manual intervention, avoiding excessive braking of empty cars that causes wheel and rail wear, and preventing insufficient braking of loaded cars that could lead to safety hazards. It is a key functional unit for ensuring the safety and efficiency of railway transportation. Therefore, the assembly quality of the sensor valve piston assembly plays a decisive role in the sensitivity and stability of the braking system. With the development of railway transportation towards high speed and heavy load, the precision requirements for the sensor valve piston assembly are increasing, and the technical bottlenecks in its assembly process are becoming increasingly prominent.

[0003] Currently, the assembly process of traditional railway freight car sensor valve pistons faces multiple technical challenges. The core process involves overcoming the elastic force of the pushrod spring and riveting the piston and pushrod together using elastic cylindrical pins. However, due to the elastic force generated by the pushrod spring under compression, the piston and pushrod are prone to axial rotation. Traditional tooling lacks an effective three-dimensional positioning structure, resulting in inaccurate fixation of the workpiece during riveting. Under traditional manual positioning methods, the axial rotation deviation of the piston and pushrod typically exceeds 3°, directly causing misalignment of the riveting position of the elastic cylindrical pin. In severe cases, this can lead to component seal failure, affecting the pressure transmission accuracy of the braking system, resulting in material waste and increased maintenance costs. Even more challenging is the significant variety of differences in railway freight car sensor valve piston components. Depending on the vehicle model and braking system design requirements, the diameter of the sensor valve piston, the length of the pushrod, and the free length and elastic coefficient of the pushrod spring all vary. Traditional assembly tooling generally uses a single-specification fixed structure, requiring the replacement of core components such as positioning claws and axial baffles when switching production to different models.

[0004] In summary, existing technologies face challenges in assembling the piston assembly of the sensing valve in railway freight cars, including insufficient positioning accuracy, high labor intensity, and poor adaptability to various product types. There is an urgent need to develop an adjustable assembly device to address these issues, improve the assembly quality and production efficiency of the sensing valve piston assembly, and provide key technical support for upgrading the reliability of railway freight car braking systems. Utility Model Content

[0005] The purpose of this invention is to provide an assembly device for sensor valve piston components, addressing the aforementioned shortcomings. This device enables the assembly of sensor valve piston components while ensuring relative fixation during assembly. It features a simple structure, reduces labor intensity during assembly, improves production efficiency, and is applicable to the assembly of various types of sensor valve piston components. To achieve the above objective, this invention provides the following technical solution.

[0006] An assembly device for a sensor valve piston assembly includes a base, a fixing and limiting mechanism, and a clamping mechanism; the base is provided with the fixing and limiting mechanism and the clamping mechanism; the fixing and limiting mechanism is used to fix and limit the sensor valve piston assembly on the base; the clamping mechanism assembles the sensor valve piston assembly by rotating a screw.

[0007] Furthermore, the fixed limiting mechanism includes an anti-rotation support block and a spring support block; the base is provided with an anti-rotation support block and a spring support block; the anti-rotation support block is provided with a U-shaped groove; the U-shaped groove cooperates with the push rod composed of the sensing valve piston to limit the rotation of the push rod; the spring support block is provided with a semi-circular groove; the semi-circular groove cooperates with the push rod spring composed of the sensing valve piston to support and limit the movement of the push rod spring.

[0008] Furthermore, the base has an elongated hole at the anti-rotation support block; the bottom of the anti-rotation support block has a threaded hole corresponding to the elongated hole; and a detachable bolt is provided in the threaded hole.

[0009] Furthermore, the base has an elongated hole at the spring support block; the spring support block has a threaded hole corresponding to the elongated hole; and a detachable bolt is provided in the threaded hole.

[0010] Furthermore, the fixed limiting mechanism also includes a right baffle and a left baffle; the base is provided with a right baffle and a left baffle at both ends respectively; the right baffle and the left baffle are used to limit the movement of the sensor valve piston assembly in its length direction.

[0011] Furthermore, the clamping mechanism includes a threaded handle and a clamping disc; the right baffle is provided with a through threaded hole; the threaded rod of the threaded handle passes through the threaded hole on the right baffle and is connected to the clamping disc; the clamping disc is located between the right baffle and the spring support block.

[0012] This utility model discloses an assembly device for a sensor valve piston assembly, including a base, a fixing and limiting mechanism, and a clamping mechanism. The base is equipped with the fixing and limiting mechanism and the clamping mechanism. The fixing and limiting mechanism is used to fix and limit the sensor valve piston assembly on the base. The clamping mechanism assembles the sensor valve piston assembly by rotating a screw. This utility model provides an assembly device for a sensor valve piston assembly, enabling the assembly of sensor valve piston assemblies while ensuring relative fixation during assembly. It has a simple structure, reduces assembly labor intensity, improves assembly production efficiency, and is applicable to the assembly of various types of sensor valve piston assemblies. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the assembly device composed of the sensing valve piston and the sensing valve piston assembly of this utility model.

[0014] Figure 2 This is a front view of the assembly device of the sensor valve piston and the sensor valve piston assembly of this utility model.

[0015] Figure 3 This is a top view of the assembly device of the sensor valve piston and the sensor valve piston assembly of this utility model.

[0016] Figure 4 This is a schematic diagram of the anti-rotation support block of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the spring support block of this utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the sensor valve piston;

[0019] Figure 7 This is a schematic diagram of the piston rod of the sensing valve.

[0020] Figure 8 This is a schematic diagram of the piston structure of the sensor valve piston assembly;

[0021] In the attached diagram: 1-base, 11-elongated hole, 2-anti-rotation support block, 21-U-shaped groove, 3-spring support block, 31-semi-circular groove, 4-right baffle, 5-left baffle, 6-threaded handle, 7-clamping plate, 8-piston, 9-push rod, 10-push rod spring, 12-through hole, 13-elongated guide hole, 14-elastic cylindrical pin. Detailed Implementation

[0022] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0023] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0024] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0025] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. The meaning of such spatial relative terms includes different orientations of the device in use or operation, in addition to the orientation depicted in the figure. For example, if the device in the figure is flipped, then an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0026] The sensor valve piston assembly is a key component of the vehicle braking system, primarily responsible for sensing vehicle load, adjusting braking pressure, and ensuring braking stability. The sensor valve piston assembly mainly consists of a push rod 9, a piston 8, and a spring for the push rod 9. These components are assembled together via a flexible cylindrical pin 14. (See attached image.) Figures 6-8 As described above, a through hole 12 is provided at one end of the push rod 9, and a push rod 9 spring is fitted on that end. The end of the push rod 9 with the push rod 9 spring enters the piston 8. Long guide holes 13 corresponding to the through hole 12 are provided at the top and bottom of the piston 8. The elastic cylindrical pin 14 is passed through the long guide hole 13 at the top of the piston 8, the through hole 12, and the long guide hole 13 at the bottom of the piston 8 in sequence to assemble the push rod 9, the piston 8, and the push rod 9 spring together.

[0027] Example 1:

[0028] See attached Figures 1-5 This utility model discloses an assembly device for a sensor valve piston assembly, comprising a base 1, a fixing and limiting mechanism, and a clamping mechanism. The fixing and limiting mechanism and the clamping mechanism are mounted on the base 1. The fixing and limiting mechanism restricts the movement of the sensor valve piston assembly on the base 1. The clamping mechanism assembles the sensor valve piston assembly by rotating a screw to overcome the spring force of the push rod 9. This utility model's assembly device for the sensor valve piston assembly uses screw rotation to overcome the spring force of the push rod 9, replacing manual compression of the push rod 9 during assembly, thus improving assembly efficiency and reducing labor intensity.

[0029] Specifically, the fixed limiting mechanism includes an anti-rotation support block 2 and a spring support block 3. Both the anti-rotation support block 2 and the spring support block 3 are fixed on the base 1. The top of the anti-rotation support block 2 is provided with a U-shaped groove 21. The two opposite side walls of the U-shaped groove 21 are perpendicular to the base 1. The end face of the push rod 9, which is composed of a sensor valve piston, away from the piston 8, is provided with a hexagonal cross-section. During assembly, the position of the hexagonal cross-section of the push rod 9 corresponds to the U-shaped groove 21, and the hexagonal cross-section is located within the U-shaped groove 21. Through the U-shaped groove 21, the rotation of the push rod 9 can be restricted during assembly. The top of the spring support block 3 is provided with a semi-circular groove 31. The semi-circular groove 31 corresponds to the spring of the push rod 9, which is composed of a sensor valve piston. The bottom of part of the spring of the push rod 9 is located within the semi-circular groove 31. Through the semi-circular groove 31, the movement of the spring of the push rod 9 in the width direction of the base 1 can be restricted during assembly.

[0030] Specifically, the anti-rotation support block 2 and the spring support block 3 can be fixed to the base 1 using bolts. Both the anti-rotation support block 2 and the spring support block 3 have threaded holes at their bottoms, with two threaded holes along the width of the base 1 at the bottom of each block. Elongated holes 11 are located on the base 1 at the corresponding positions of the threaded holes. By passing a bolt through the elongated hole 11 of the anti-rotation support block 2 and then into the threaded hole of the anti-rotation support block 2, the anti-rotation support block 2 can be fixed to the base 1. Similarly, by passing a bolt through the elongated hole 11 of the spring support block 3 and then into the threaded hole of the spring support block 3, the anti-rotation support block 2 can be fixed to the base 1. The elongated holes 11 also allow for easy adjustment of the positions of the anti-rotation support block 2 and the spring support block 3 on the base 1, facilitating the assembly of various types of sensor valve pistons.

[0031] Specifically, the fixed limiting mechanism also includes a right baffle 4 and a left baffle 5. The right baffle 4 and the left baffle 5 are respectively provided at both ends of the base 1. When the sensor valve piston assembly is assembled, it is located between the right baffle 4 and the left baffle 5. The end face of the push rod 9 away from the piston 8 is in contact with the left baffle 5. The movement of the sensor valve piston assembly between the right baffle 4 and the left baffle 5 can be restricted by the right baffle 4 and the left baffle 5.

[0032] Specifically, the clamping mechanism includes a threaded handle 6 and a clamping disc 7. A through threaded hole is provided on the right baffle 4. The threaded rod of the threaded handle 6 passes through the threaded hole on the right baffle 4 and is fixedly connected to the clamping disc 7. By rotating the handle of the threaded handle 6, the clamping disc 7 can be moved between the left baffle 5 and the right baffle 4. During assembly, the piston 8, which is composed of the sensor valve piston, contacts the clamping disc 7. The clamping disc 7 pushes the piston 8 to move, thereby compressing the spring of the push rod 9.

[0033] Example 2:

[0034] The assembly steps of the sensor valve piston assembly device of this utility model are as follows:

[0035] Step 1: Install the spring on the right end of the push rod 9;

[0036] Step 2: Insert the right end of the push rod 9 into the piston 8, so that the through hole 12 at the right end of the push rod 9 corresponds to the elongated guide hole 13 of the piston 8; at this time, part of the spring is located outside the right end of the push rod 9, and part of it is located outside the piston 8.

[0037] Step 3: Place the hexagonal section of the left end of the push rod 9 into the U-shaped groove 21 of the anti-rotation support block 2, so that the two parallel sections of the hexagonal section match the side wall of the U-shaped groove 21, and place the spring of the push rod 9 on the spring support block 3.

[0038] Step 4: Rotate the threaded handle 6 to move the clamping plate 7 to the left, which in turn pushes the piston 8 to the left to compress the spring of the push rod 9 until the through hole 12 at the right end of the push rod 9 can be seen through the elongated guide hole 13.

[0039] Step 5: Continue to rotate the threaded handle 6 to adjust the wire gap of the spring in the push rod 9.

[0040] Step 6: Pass the elastic cylindrical pin 14 through the gap between the spring wire of the push rod 9 and the long guide of the piston 8, and insert it into the through hole 12 at the right end of the push rod 9 to complete the assembly of the sensor valve piston.

[0041] Step 7: After assembling the sensor valve piston assembly, rotate the threaded handle 6 in the opposite direction to remove the assembled sensor valve piston assembly.

[0042] All technical features in this embodiment can be freely combined according to actual needs. The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

[0043] The above embodiments are preferred implementations of this utility model. In addition, other implementations are also included. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An assembly device consisting of a sensing valve piston, characterized in that: It includes a base (1), a fixing and limiting mechanism and a clamping mechanism; the base (1) is provided with a fixing and limiting mechanism and a clamping mechanism; the fixing and limiting mechanism is used to fix and limit the sensor valve piston assembly on the base (1); the clamping mechanism assembles the sensor valve piston assembly by rotating a screw.

2. The assembly device for the sensor valve piston according to claim 1, characterized in that: The fixed limiting mechanism includes an anti-rotation support block (2) and a spring support block (3); the base (1) is provided with an anti-rotation support block (2) and a spring support block (3); the anti-rotation support block (2) is provided with a U-shaped groove (21); the U-shaped groove (21) cooperates with the push rod composed of the sensing valve piston to limit the rotation of the push rod; the spring support block (3) is provided with a semi-circular groove (31); the semi-circular groove (31) cooperates with the push rod spring composed of the sensing valve piston to support and limit the movement of the push rod spring.

3. The assembly device for the sensor valve piston according to claim 1, characterized in that: The base (1) has an elongated hole (11) at the anti-rotation support block (2); the bottom of the anti-rotation support block (2) has a threaded hole corresponding to the elongated hole (11); and a detachable bolt is provided in the threaded hole.

4. The assembly device for the sensor valve piston according to claim 1, characterized in that: The base (1) has an elongated hole (11) at the spring support block (3); the spring support block (3) has a threaded hole corresponding to the elongated hole (11); and a detachable bolt is provided in the threaded hole.

5. The assembly device for the sensor valve piston according to claim 1, characterized in that: The fixed limiting mechanism also includes a right baffle (4) and a left baffle (5); the base (1) is provided with a right baffle (4) and a left baffle (5) at both ends; the right baffle (4) and the left baffle (5) are used to limit the movement of the piston assembly of the sensing valve in its length direction.

6. The assembly device for the sensor valve piston according to claim 5, characterized in that: The clamping mechanism includes a threaded handle (6) and a clamping disc (7); the right baffle (4) is provided with a through threaded hole; the threaded rod of the threaded handle (6) passes through the threaded hole on the right baffle (4) and is connected to the clamping disc (7); the clamping disc (7) is located between the right baffle (4) and the spring support block (3).

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