Brake valve inspection and positioning device

Abstract

The utility model relates to a brake valve maintenance positioning device, and relates to the technical field of truck maintenance. Each positioning assembly in the brake valve maintenance positioning device can move in a slideway provided on a base, so that its position can be adjusted according to the size and structure of the valve body assembly to be positioned. Before placing the valve body assembly on the base, by pulling the pull rod downward, the top of the rod body can be disengaged from the fixed block provided on the surface of the extension portion. Since the fixed block is movably provided, the fixed block will be retracted inward after lacking the support of the rod body, so that the extension portion of the shell and the fixed block can be smoothly inserted into the fixing hole of the valve body assembly. After the valve body assembly is placed, the pull rod is released, and the convex ring in the pull rod is automatically lifted by the spring, so that the top of the rod body supports the fixed block again, and the fixed block is stretched outward and contacts the wall of the fixing hole of the valve body assembly, so as to fix the valve body assembly. The operation is simple, and the positioning requirements of various valve body assemblies can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of truck maintenance, in particular to a brake valve maintenance positioning device. Background Art

[0002] The brake valve is the core component of the railway vehicle braking system. It is used to control other brake components to achieve vehicle braking and release, and plays an important role in ensuring the safe operation of the vehicle. The relevant maintenance rules stipulate that the brake valve must be disassembled, cleaned, repaired, assembled and tested after reaching the end of its service life.

[0003] The Chinese patent with publication number CN218984688U discloses a special tool for disassembling and assembling a brake valve for railway vehicles, wherein a pair of locating pins are arranged diagonally on the upper end of the mounting plate for accurately placing the brake valve. The locating pins are fixedly arranged on the mounting plate, but the brake valve involves multiple valve body assemblies, and the structures of different valve body assemblies are different to a certain extent. The fixed locating pins are difficult to meet the positioning requirements of multiple valve body assemblies. Utility Model Content

[0004] The utility model provides a brake valve maintenance positioning device, which is easy to operate and can meet the positioning requirements of various valve body components.

[0005] 4. The repairing and locating device of claim 1, wherein the two guide wheels are arranged on a track, the guide wheels are connected to each other with a check valve in the track, and the check valve is connected to the track by a check valve in the track.

[0006] In one embodiment, the top of the rod body is in a truncated cone shape, the cross section of the fixing block is in a trapezoidal shape, and the thickness of the top of the fixing block is greater than the thickness of the bottom of the fixing block.

[0007] In one embodiment, a mounting hole for mounting the fixing block is provided on the surface of the extension portion, and a gap is provided between the top of the fixing block and the hole wall of the mounting hole.

[0008] In one embodiment, a limiting protrusion is further provided on the top of the fixing block.

[0009] In one embodiment, a plurality of grooves are provided on the surface of the fixing block to form anti-slip patterns.

[0010] In one embodiment, a plurality of the fixing blocks are arranged at equal intervals on the extending portion.

[0011] In one embodiment, the distance between the edge of the protruding ring and the inner wall of the main body is less than 2 mm.

[0012] In one embodiment, the bottom of the base is an electromagnet, the shell is made of steel, and the pull rod, the spring and the fixing block are made of aluminum alloy.

[0013] In one embodiment, the slideway includes two longitudinal slide grooves and four transverse slide grooves, and both ends of the transverse slide grooves are respectively connected to one longitudinal slide groove.

[0014] In one embodiment, a limiting ring is provided at the bottom of the main body, and the pull rod passes through the limiting ring.

[0015] Compared with the prior art, the advantage of the utility model is that each positioning assembly can move in the slideway opened on the base, so that its position can be flexibly adjusted according to the size and structure of the valve body assembly to be positioned. Before placing the valve body assembly on the base, by pulling the pull rod downward, the top of the rod body can be disengaged from the fixed block arranged on the surface of the extension part. Since the fixed block is movably arranged, the fixed block will be retracted inward after lacking the support of the rod body, so that the extension part of the shell and the fixed block can be smoothly inserted into the fixing hole of the valve body assembly. After the valve body assembly is placed, the pull rod is released, and the convex ring in the pull rod is automatically lifted by the spring, so that the top of the rod body supports the fixed block again, and the fixed block is stretched outward and contacts the wall of the fixing hole of the valve body assembly, so as to fix the valve body assembly. It is not only very easy to operate, but also can meet the positioning requirements of various valve body assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0017] Figure 1 It is a three-dimensional view of the brake valve maintenance and positioning device in the embodiment of the utility model;

[0018] Figure 2 It is a top view of the brake valve maintenance and positioning device in the embodiment of the utility model;

[0019] Figure 3 It is a side view of the brake valve maintenance and positioning device in the embodiment of the utility model;

[0020] Figure 4 yes Figure 3 AA section view;

[0021] Figure 5 yes Figure 4 The enlarged view of point B in the middle;

[0022] Figure 6 is a cross-sectional view of the positioning assembly when the pull rod is pulled down in the embodiment of the utility model;

[0023] Figure 7 yes Figure 6 Enlarged view of point C in the middle.

[0024] Reference numerals:

[0025] 1. Base; 11. Slide; 111. Horizontal slide; 112. Longitudinal slide; 2. Positioning assembly; 21. Shell; 211. Main body; 212. Extension; 22. Pull rod; 221. Rod body; 222. Raised ring; 23. Spring; 24. Fixing block; 25. Limiting protrusion; 26. Limiting ring; 100. Gap; 200. Groove. DETAILED DESCRIPTION

[0026] The utility model will be further described below in conjunction with the accompanying drawings.

[0027] like Figure 1 and Figure 2 As shown, the brake valve maintenance positioning device of an embodiment of the utility model comprises a base 1 and four positioning components 2. The base 1 is provided with a slideway 11. The slideway 11 comprises four transverse slide grooves 111 and two longitudinal slide grooves 112. The transverse slide grooves 111 are connected with the longitudinal slide grooves 112. The positioning components 2 can move in the transverse slide grooves 111 and the longitudinal slide grooves 112. Figure 3 and Figure 4 As shown, the positioning assembly 2 includes a shell 21, a pull rod 22, a spring 23 and four fixed blocks 24. The shell 21 includes a main body 211 and an extension portion 212 arranged on the top of the main body 211. The main body 211 is arranged in the slide 11. The spring 23 is arranged inside the main body 211. The extension portion 212 extends out of the slide 11 and protrudes from the surface of the base 1. The fixed block 24 is movably arranged on the extension portion 212. The pull rod 22 includes a rod body 221 and a convex ring 222 surrounding the surface of the rod body 221. The convex ring 222 is arranged inside the main body 211. The bottom surface of the convex ring 222 is connected to the top surface of the spring 23. The top of the pull rod 22 is selectively connected to the fixed block 24 to cause the fixed block 24 to move. The bottom of the pull rod 22 extends from the bottom of the base 1.

[0028] Each positioning assembly 2 can move in the slideway 11 provided on the base 1, so that its position can be flexibly adjusted according to the size and structure of the valve body assembly to be positioned. Before placing the valve body assembly on the base 1, by pulling the pull rod 22 downward, the top of the rod body 221 can be disengaged from the fixed block 24 provided on the surface of the extension 212. Since the fixed block 24 is movably provided, the fixed block 24 will be retracted inward after lacking the support of the rod body 221, so that the extension 212 of the shell 21 and the fixed block 24 can be smoothly inserted into the fixed hole of the valve body assembly. After the valve body assembly is placed, the pull rod 22 is released, and the convex ring 222 in the pull rod 22 is automatically lifted by the spring 23, so that the top of the rod body 221 supports the fixed block 24 again, and the fixed block 24 is stretched outward and contacts the wall of the fixed hole of the valve body assembly, so as to fix the valve body assembly. Not only is the operation very simple, but also the positioning requirements of various valve body assemblies can be met.

[0029] like Figure 4 and Figure 5 As shown, the top of the rod body 221 is in a truncated cone shape, and the cross section of the fixing block 24 is in a trapezoidal shape. Specifically, the cross section of the fixing block 24 is in an inverted right-angled trapezoid, and the thickness of the top of the fixing block 24 is greater than the thickness of the bottom of the fixing block 24. The top surface of the rod body 221 can make relatively sufficient contact with the surface of the fixing block 24. This structure of the fixing block 24 makes the fixing block 24 present a "top-heavy" state. When the rod body 221 does not support the fixing block 24, the fixing block 24 will automatically retract inward under the action of gravity, so as to facilitate its insertion into the fixing hole of the valve body assembly.

[0030] like Figure 5 As shown, further, a mounting hole for mounting the fixing block 24 is provided on the surface of the extension portion 212, and a gap 100 is provided between the top of the fixing block 24 and the hole wall of the mounting hole. The gap 100 can provide space for the displacement of the fixing block 24, so that the fixing block 24 can smoothly perform the two displacement actions of folding and unfolding.

[0031] like Figures 5 to 7 As shown, a limiting protrusion 25 is also provided on the top of the fixing block 24. When the rod body 221 supports the fixing block 24, the limiting protrusion 25 will contact the inner surface of the extension portion 212 to prevent the fixing block 24 from loosening, so that the fixing block 24 is always kept on the extension portion 212.

[0032] like Figure 3 As shown, the surface of the fixing block 24 is provided with a plurality of grooves 200 to form anti-skid patterns. Since the fixing block 24 needs to use friction to fix the valve body assembly, the anti-skid patterns formed on the surface of the fixing block 24 by providing grooves 200 can effectively improve the fixing effect of the fixing block 24 on the valve body assembly.

[0033] In this embodiment, four fixing blocks 24 are arranged at equal intervals on the extension portion 212. When the rod body 221 supports the fixing blocks 24 under the action of the spring 23, each fixing block 24 can be synchronously expanded outward, and the four fixing blocks 24 arranged at equal intervals on the extension portion 212 can be in contact with each area of ​​the fixing hole of the valve body assembly, thereby facilitating improving the fixing effect.

[0034] like Figure 6 As shown, the distance between the edge of the protruding ring 222 and the inner wall of the main body 211 is small, which is 1 mm, so that a spring 23 with a larger outer diameter can be used, so that the spring 23 provides more stable and reliable support.

[0035] In this embodiment, the bottom of the base 1 is an electromagnet, the shell 21 is made of steel, and the pull rod 22, spring 23 and fixed block 24 are made of aluminum alloy. When the positioning component 2 is moved into place, the base 1 generates a magnetic field after being energized, which adsorbs the shell 21 and fixes the shell 21 on the base 1 to prevent the positioning component 2 from moving again. However, since the pull rod 22, spring 23 and fixed block 24 are made of aluminum alloy, they will not be significantly affected by the magnetic field and can perform their respective functions normally. When the operation is completed, the base 1 can be powered off to move the positioning component 2 again, which is very easy to operate.

[0036] like Figure 6 As shown, a limiting ring 26 is provided at the bottom of the main body 211, and the pull rod 22 passes through the limiting ring 26. The limiting ring 26 is made of a material with less friction, which can improve the stability of the pull rod 22 when it moves, and reduce the friction when pulling the pull rod 22, making the operation more labor-saving.

[0037] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A brake valve maintenance and positioning device, characterized in that: The invention comprises a base and at least two positioning components, wherein a slide is provided on the base, wherein the slide comprises at least two transverse slide grooves and at least two longitudinal slide grooves, wherein the transverse slide grooves are connected with the longitudinal slide grooves, and the positioning component can move in the transverse slide grooves and the longitudinal slide grooves, and the positioning component comprises a shell, a pull rod, a spring and a plurality of fixed blocks, wherein the shell comprises a main body and an extension portion arranged at the top of the main body, the main body is arranged in the slide groove, the spring is arranged inside the main body, the extension portion extends out of the slide groove and protrudes from the surface of the base, the fixed block is movably arranged on the extension portion, the pull rod comprises a rod body and a convex ring surrounding the surface of the rod body, the convex ring is arranged inside the main body, the bottom surface of the convex ring is connected to the top surface of the spring, the top of the pull rod is selectively connected to the fixed block to cause the fixed block to be displaced, and the bottom of the pull rod extends out from the bottom of the base.

2. The brake valve maintenance and positioning device according to claim 1, characterized in that: The top of the rod body is in a truncated cone shape, the cross section of the fixing block is in a trapezoidal shape, and the thickness of the top of the fixing block is greater than the thickness of the bottom of the fixing block.

3. The brake valve maintenance and positioning device according to claim 2, characterized in that: A mounting hole for mounting the fixing block is provided on the surface of the extending portion, and a gap is provided between the top of the fixing block and the hole wall of the mounting hole.

4. The brake valve maintenance and positioning device according to claim 2, characterized in that: A limiting protrusion is also provided on the top of the fixing block.

5. The brake valve maintenance and positioning device according to claim 1, characterized in that: The surface of the fixing block is provided with a plurality of grooves to form anti-slip lines.

6. The brake valve maintenance and positioning device according to claim 1, characterized in that: A plurality of the fixing blocks are arranged at equal intervals on the extending portion.

7. The brake valve maintenance and positioning device according to claim 1, characterized in that: The distance between the edge of the convex ring and the inner wall of the main body is less than 2 mm.

8. The brake valve maintenance and positioning device according to claim 1, characterized in that: The bottom of the base is an electromagnet, the shell is made of steel, and the pull rod, the spring and the fixing block are made of aluminum alloy.

9. The brake valve maintenance and positioning device according to claim 1, characterized in that: The slideway includes two longitudinal slide grooves and four transverse slide grooves, and two ends of the transverse slide grooves are respectively connected to one longitudinal slide groove.

10. The brake valve maintenance and positioning device according to claim 1, characterized in that: A limiting ring is provided at the bottom of the main body, and the pull rod passes through the limiting ring.

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