Dismounting device for derailment brake valve

Abstract

The utility model relates to a derailment brake valve dismounting device which comprises a locking assembly, the locking assembly comprises a limiting sleeve and a connecting part connected with the limiting sleeve, and the limiting sleeve is arranged on a connecting sleeve of a derailment brake valve in a sleeving mode and used for limiting the connecting sleeve; the cylinder barrel is connected with the connecting part; the ejection assembly is installed in the cylinder barrel, and the ejection assembly is used for ejecting the fixing pin on the connecting sleeve out of the connecting sleeve; and the limiting assembly is installed at the communicating position of the locking assembly and the cylinder barrel and used for limiting the position of the fixing pin during disassembly. By arranging the limiting assembly, the fixing pin and the ejector rod are accurately aligned in the derailment brake valve dismounting process, and the situation that the ejection process is blocked due to dislocation of the fixing pin and the ejector rod, local stress concentration between the ejector rod and the fixing pin occurs, and consequently the ejector rod is damaged is avoided.

Description

Technical Field

[0001] This utility model relates to the field of derailment brake valve technology, and in particular to a derailment brake valve disassembly device. Background Technology

[0002] The derailment brake valve is an indispensable safety component in railway freight cars. It automatically triggers emergency braking when a vehicle derails, quickly stopping the train to minimize further damage. The pull ring, as a key component of this device, is particularly crucial for disassembly and replacement during maintenance. Traditional disassembly methods typically rely on manual operation or using high-temperature oxygen to cut the rivets on the fixing pin. Because this cutting component is small, improper handling during the cutting process can easily damage other parts, resulting in wasted resources. Furthermore, due to the small size of the fixing pin on the derailment brake valve, the push rod of the disassembly device may become misaligned when pushing the fixing pin, potentially hindering its movement and requiring greater force to remove it from the connecting sleeve, thus affecting the disassembly process. Therefore, a derailment brake valve disassembly device is proposed. Utility Model Content

[0003] This utility model provides a derailment brake valve disassembly device to solve at least one of the above-mentioned technical problems.

[0004] This utility model provides a derailment brake valve disassembly device, comprising:

[0005] A locking assembly, the locking assembly including a connecting part connected to a limiting sleeve, the limiting sleeve being sleeved on the connecting sleeve of the derailment brake valve, for limiting the connecting sleeve;

[0006] Cylinder barrel, which is connected to the connecting part;

[0007] An ejector assembly is installed inside the cylinder and is used to eject the retaining pin on the connecting sleeve from the connecting sleeve.

[0008] A limiting component is installed at the connection between the locking component and the cylinder barrel to limit the position of the fixing pin during disassembly.

[0009] In one embodiment, the limiting component includes a positioning cylinder and a plurality of first screws. The diameter of the positioning cylinder near the ejector component is larger than the diameter near the locking component. The positioning cylinder has a plurality of first screws evenly arranged in its circumferential direction. After passing through the cylinder, the plurality of first screws are all fitted with first nuts.

[0010] In one embodiment, the inner diameter of the positioning cylinder near the fixing pin is larger than the outer diameter of the fixing pin.

[0011] In one embodiment, the locking assembly further includes a plurality of fixing components, each fixing component including a second screw and a pressure plate, the second screw passing through the limiting sleeve, and a pressure plate provided at one end of the second screw near the connecting sleeve, and the plurality of fixing components being symmetrically arranged with respect to the fixing pin.

[0012] In one embodiment, the locking assembly further includes a first ejector groove and a second ejector groove, the first ejector groove and the second ejector groove being symmetrically arranged, and the first ejector groove communicating with the connecting portion.

[0013] In one embodiment, the ejection assembly includes an adjusting ring and a push rod. The adjusting ring is rotatably mounted on the end of the cylinder away from the locking assembly. The push rod passes through the center of the adjusting ring and extends into the cylinder. The outer surface of the push rod is provided with an external thread, which engages with the internal thread of the adjusting ring.

[0014] In one embodiment, a positioning assembly is provided between the push rod and the cylinder. The positioning assembly includes a collar, multiple limiting grooves, and multiple limiting blocks. The collar is sleeved on the push rod, and a rubber bushing is provided between the collar and the push rod. Multiple limiting blocks are evenly distributed around the collar. The multiple limiting grooves are evenly distributed on the inner wall of the cylinder along the moving direction of the push rod. The end of each limiting block away from the push rod extends into the limiting groove, and each limiting block corresponds to a limiting groove.

[0015] In one embodiment, the push rod has a groove at one end near the fixing pin, the groove being used to align the push rod with the fixing pin.

[0016] In one embodiment, the limiting sleeve is cylindrical, and the inner diameter of the limiting sleeve is larger than the outer diameter of the connecting sleeve.

[0017] In one embodiment, the inner diameter of the positioning cylinder near the fixing pin is larger than the diameter of the top rod.

[0018] Compared with the prior art, the advantage of this utility model is that by setting a limiting component, the fixing pin and the push rod are precisely aligned during the disassembly of the derailment brake valve, so as to avoid the jacking process being blocked due to misalignment of the fixing pin and the push rod, and the local stress concentration between the push rod and the fixing pin, which would cause damage to the push rod. Attached Figure Description

[0019] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 yes Figure 1 A cross-sectional view of section AA;

[0022] Figure 3 This is a schematic diagram of the structure of the limiting sleeve of this utility model;

[0023] Figure label:

[0024] 1. Ejector assembly; 101. Adjusting ring; 102. Ejector rod; 2. Locking assembly; 201. Limiting sleeve; 202. Connecting part; 203. Fixing assembly; 2031. Second screw; 2032. Pressure plate; 204. First ejector pin groove; 205. Second ejector pin groove; 3. Cylinder; 4. Fixing pin; 5. Connecting sleeve; 6. Limiting assembly; 601. Positioning cylinder; 602. First screw; 603. First nut; 7. Positioning assembly; 701. Rubber bushing; 202. Collar; 703. Limiting block; 704. Limiting groove. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Please refer to Figures 1 to 3 This utility model provides a derailment brake valve disassembly device, including: a locking component 2, the locking component 2 including a limiting sleeve 201 and a connecting part 202 connected to the limiting sleeve 201, the limiting sleeve 201 and the connecting part 202 can be an integrally formed structure, the limiting sleeve 201 is sleeved on the connecting sleeve 5 of the derailment brake valve, and is used to limit the connecting sleeve 5.

[0027] The locking assembly 2 also includes multiple fixing components 203. Each fixing component 203 includes a second screw 2031 and a pressure plate 2032. The second screw 2031 passes through the limiting sleeve 201, and the pressure plate 2032 is provided at the end of the second screw 2031 near the connecting sleeve 5. The multiple fixing components 203 are symmetrically arranged with fixing pins 4. In this embodiment, there are two fixing components 203, which are symmetrically arranged on the limiting sleeve 201 with connecting parts 202. The fixing components 203 are used to clamp connecting sleeves 5 of different sizes.

[0028] First, the limiting sleeve 201 is fitted onto the connecting sleeve 5. Since there is a gap between the limiting sleeve 201 and the connecting sleeve 5, when the fixing pin 4 is pushed by the push rod 102, there will be relative movement between the limiting sleeve 201 and the connecting sleeve 5. In order to avoid relative movement between the limiting sleeve 201 and the connecting sleeve 5, the second screw 2031 is rotated. The external thread of the second screw 2031 engages with the internal thread at the position where the second screw 2031 passes through the limiting sleeve 201. The second screw 2031 will move the pressure plate 2032, and the two pressure plates 2032 will clamp the connecting sleeve 5.

[0029] The fixing component 203 in this embodiment may also include a second nut sleeved on the second screw 2031. By rotating the second nut to cooperate with the second screw 2031, the position of the second screw 2031 on the limiting sleeve 201 is controlled, thereby controlling the distance between the two pressure plates 2032 so as to clamp the connecting sleeve 5 through the two pressure plates 2032.

[0030] The locking assembly 2 also includes a first ejector pin groove 204 and a second ejector pin groove 205, which are symmetrically arranged, and the first ejector pin groove 204 communicates with the connecting part 202. The connecting part 202 is cylindrical and is installed on the outer periphery of the first ejector pin groove 204. Both the first ejector pin groove 204 and the second ejector pin groove 205 have notches on their lower sides. When the limiting sleeve 201 is installed, the fixing pin 4 enters the first ejector pin groove 204 and the second ejector pin groove 205 through the notches, such as... Figure 3 As shown.

[0031] A notch may also be provided on the lower side of the connecting part 202 to facilitate the insertion of the fixing pin 4 into the connecting part 202.

[0032] Since the second ejection groove 205 is the position where the fixing pin 4 is pushed out of the connecting sleeve 5, the lower side of the second ejection groove 205 does not need to be provided with a notch, and the second ejection groove 205 can accommodate the fixing pin 4 to come out.

[0033] To better implement this utility model, refer to Figure 1 In one embodiment, the disassembly device further includes a cylinder 3, which is connected to a connecting part 202. The cylinder 3 and the connecting part 202 can be connected by threads or by welding.

[0034] To better implement this utility model, refer to Figure 1In one embodiment, the disassembly device further includes an ejector assembly 1, which is installed inside the cylinder 3. The ejector assembly 1 is used to eject the fixing pin 4 on the connecting sleeve 5 out of the connecting sleeve 5. The ejector assembly 1 includes an adjusting ring 101 and an ejector rod 102. The adjusting ring 101 is rotatably mounted on the end of the cylinder 3 away from the locking assembly 2. The ejector rod 102 passes through the center of the adjusting ring 101 and extends into the cylinder 3. The outer surface of the ejector rod 102 is provided with an external thread, which engages with the internal thread of the adjusting ring 101. When ejecting the fixing pin 4, rotating the adjusting ring 101 causes the internal thread of the adjusting ring 101 to engage with the external thread on the ejector rod 102, allowing the ejector rod 102 to move along the cylinder 3. After one end of the ejector rod 102 abuts against the fixing pin 4, as the ejector rod 102 continues to move, the fixing pin 4 is ejected out of the connecting sleeve 5.

[0035] To better implement this utility model, refer to Figure 1 In one embodiment, the disassembly device further includes a limiting component 6, which is installed at the connection between the locking component 2 and the cylinder 3, and is used to limit the position of the fixing pin 4 when disassembling the derailment brake valve. The limiting component 6 includes a positioning cylinder 601 and multiple first screws 602. The diameter of the end of the positioning cylinder 601 near the ejector component 1 is larger than the diameter of the end near the locking component 2. Multiple first screws 602 are evenly arranged circumferentially on the positioning cylinder 601. After passing through the cylinder 3, the multiple first screws 602 are all sleeved on the first screws 602 and fitted with first nuts 603. In this embodiment, there are two first screws 602, which are symmetrically arranged on the positioning cylinder 601, such as... Figure 1 As shown, since the width of the first ejector groove 204 is greater than the diameter of the fixing pin 4, after the fixing component 203 fixes the connecting sleeve 5, the fixing pin 4 may not be located at the central axis of the first ejector groove 204. In order to control the accuracy of the ejector rod 102 when ejecting the fixing pin 4, one end of the fixing pin 4 is inserted into the positioning cylinder 601. Since the fixing pin 4 is not located at the central axis of the first ejector groove 204, the position of the positioning cylinder 601 needs to be adjusted to ensure that the fixing pin 4 enters the positioning cylinder 601. By rotating the first nut 603 on the two first screws 602, the length of the two first screws 602 extending out of the cylinder 3 can be controlled, and the position of the positioning cylinder 601 can be finely adjusted so that the fixing pin 4 is aligned with the positioning cylinder 601. At this time, the ejector rod 102 can be precisely aligned with the fixing pin 4 and eject the fixing pin 4 by entering the positioning cylinder 601 along the cylinder 3.

[0036] The inner diameter of the positioning cylinder 601 near the fixing pin 4 is larger than the outer diameter of the fixing pin 4, so as to ensure that the fixing pin 4 can be inserted into the positioning cylinder 601, making the alignment of the fixing pin 4 with the push rod 102 more precise.

[0037] To better implement this utility model, refer to Figure 2In one embodiment, a positioning assembly 7 is provided between the push rod 102 and the cylinder 3. The positioning assembly 7 includes a collar 202, multiple limiting grooves 704, and multiple limiting blocks 703. The collar 202 is sleeved on the push rod 102, and a rubber bushing 701 is provided between the collar 202 and the push rod 102. Since the fixing pin 4 may not be on the central axis of the first unpin groove 204, the push rod 102, which is installed on the central axis of the cylinder 3, may misalign with the fixing pin 4 when it pushes the fixing pin 4. To ensure alignment between the push rod 102 and the fixing pin 4, the rubber bushing 701 allows for angular adjustment of the push rod 102. After the push rod 102 moves into the positioning cylinder 601, due to the inclination of the inner wall of the positioning cylinder 601, the end of the positioning cylinder 601 near the locking assembly 2 gradually converges towards the fixing pin 4. The positioning cylinder 601 further controls the alignment between the push rod 102 and the fixing pin 4. The rubber bushing 701 is flexible, allowing the push rod 102 to deviate angularly within a certain range. Multiple limiting blocks 703 are evenly distributed circumferentially on the collar 202, and multiple limiting grooves 704 are evenly distributed on the inner wall of the cylinder 3 along the moving direction of the push rod 102. The ends of the limiting blocks 703 away from the push rod 102 all extend into the limiting grooves 704. The limiting blocks 703 and the limiting grooves 704 correspond one-to-one, and the number of limiting blocks 703 and the number of limiting grooves 704 are the same. When the adjusting ring 101 is rotated, the external thread of the push rod 102 engages with the internal thread of the adjusting ring 101, and the rotation of the push rod 102 is limited by the positioning component 7, so that the push rod 102 can move along the cylinder 3. The positioning component 7 can ensure that the push rod 102 will not rotate when the adjusting ring 101 is rotated, and can also ensure the direction of movement of the push rod 102.

[0038] The push rod 102 has a groove at one end near the fixing pin 4. The groove is used to align the push rod 102 and the fixing pin 4. The groove can further limit the accuracy of the alignment between the push rod 102 and the fixing pin 4 during the process of pushing the fixing pin 4.

[0039] To better implement this utility model, refer to Figure 1 In one embodiment, the limiting sleeve 201 is cylindrical, and the inner diameter of the limiting sleeve 201 is larger than the outer diameter of the connecting sleeve 5. The limiting sleeve 201 can be adapted to connecting sleeves 5 of different sizes, increasing the application scenarios of the entire disassembly device.

[0040] To better implement this utility model, refer to Figure 1 In one embodiment, the inner diameter of the positioning cylinder 601 near the fixing pin 4 is larger than the diameter of the push rod 102. This ensures that the push rod 102 can enter the positioning cylinder 601, abut against the fixing pin 4, continue to move along the positioning cylinder 601, and eventually push the fixing pin 4 out of the connecting sleeve 5.

[0041] The working principle of the above-mentioned derailment brake valve disassembly device is as follows:

[0042] When disassembling the derailment brake valve, first, the limiting sleeve 201 is fitted onto the connecting sleeve 5. The fixing pin 4 on the connecting sleeve 5 is then inserted from the first unpin groove 204 into the positioning cylinder 601. The two first nuts 603 are rotated, and the two first screws 602 are adjusted to ensure that one end of the fixing pin 4 can enter the positioning cylinder 601. The two second screws 2031 are then rotated, causing the pressure plates 2032 to move, thus clamping the connecting sleeve 5 and ensuring the position of the entire disassembly device is secure. Once the position is fixed, rotate the adjusting ring 101. The internal thread of the adjusting ring 101 engages with the external thread of the push rod 102, moving the push rod 102 toward one end of the positioning cylinder 601. The push rod 102 enters the positioning cylinder 601 and gradually abuts against the fixing pin 4. Continue rotating the adjusting ring 101, and the push rod 102 pushes the fixing pin 4, causing the rivet installed on the fixing pin 4 to be squeezed and broken by the connecting sleeve 5. At this time, the fixing pin 4 can be removed from the connecting sleeve 5 along the first unpin groove 204 and the second unpin groove 205, and the derailment brake valve is disassembled.

[0043] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided 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 derailment brake valve disassembly device, characterized in that, include: A locking assembly, the locking assembly including a connecting part connected to a limiting sleeve, the limiting sleeve being sleeved on the connecting sleeve of the derailment brake valve, for limiting the connecting sleeve; Cylinder barrel, which is connected to the connecting part; An ejector assembly is installed inside the cylinder and is used to eject the retaining pin on the connecting sleeve from the connecting sleeve. A limiting component is installed at the connection between the locking component and the cylinder barrel to limit the position of the fixing pin during disassembly.

2. The derailment brake valve disassembly device according to claim 1, characterized in that, The limiting component includes a positioning cylinder and multiple first screws. The diameter of the positioning cylinder near the ejector component is larger than the diameter near the locking component. Multiple first screws are evenly arranged in the circumferential direction of the positioning cylinder. After passing through the cylinder, each of the multiple first screws is fitted with a first nut.

3. The derailment brake valve disassembly device according to claim 2, characterized in that, The inner diameter of the positioning cylinder near the fixed pin is larger than the outer diameter of the fixed pin.

4. The derailment brake valve disassembly device according to claim 1, characterized in that, The locking assembly also includes multiple fixing components. Each fixing component includes a second screw and a pressure plate. The second screw passes through the limiting sleeve. A pressure plate is provided at one end of the second screw near the connecting sleeve. The multiple fixing components are symmetrically arranged with respect to the fixing pin.

5. The derailment brake valve disassembly device according to claim 4, characterized in that, The locking assembly further includes a first ejector groove and a second ejector groove, which are symmetrically arranged, and the first ejector groove communicates with the connecting part.

6. The derailment brake valve disassembly device according to claim 2, characterized in that, The ejection assembly includes an adjusting ring and an ejector rod. The adjusting ring is rotatably mounted on the end of the cylinder away from the locking assembly. The ejector rod passes through the center of the adjusting ring and extends into the cylinder. The outer surface of the ejector rod is provided with an external thread, and the external thread of the ejector rod engages with the internal thread of the adjusting ring.

7. The derailment brake valve disassembly device according to claim 6, characterized in that, A positioning assembly is provided between the push rod and the cylinder. The positioning assembly includes a collar, multiple limiting grooves, and multiple limiting blocks. The collar is sleeved on the push rod, and a rubber bushing is provided between the collar and the push rod. Multiple limiting blocks are evenly arranged around the collar. The multiple limiting grooves are evenly arranged on the inner wall of the cylinder along the moving direction of the push rod. The end of each limiting block away from the push rod extends into the limiting groove, and each limiting block corresponds to a limiting groove.

8. The derailment brake valve disassembly device according to claim 6 or 7, characterized in that, The top rod has a groove at one end near the fixing pin, and the groove is used to align the top rod with the fixing pin.

9. The derailment brake valve disassembly device according to claim 1, characterized in that, The limiting sleeve is cylindrical, and the inner diameter of the limiting sleeve is larger than the outer diameter of the connecting sleeve.

10. The derailment brake valve disassembly device according to claim 6, characterized in that, The inner diameter of the positioning cylinder near the fixing pin is larger than the diameter of the top rod.

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