Quick clamping mechanism of rail fastener spring fatigue test clamp

Abstract

The utility model provides a kind of quick clamping mechanism of rail fastener elastic strip fatigue test fixture. It is related to rail fastener test equipment technical field. The quick clamping mechanism of rail fastener elastic strip fatigue test fixture includes bottom support and test platform fixedly installed in the top of bottom support, the top of test platform is equipped with placing port, the top of test platform is fixedly installed with top flap, first double-shaft air cylinder is fixedly installed on the top flap, the output shaft of first double-shaft air cylinder penetrates the top of top flap and is movably connected with the top of top flap, fastener elastic strip middle pressing piece is fixedly installed on the output shaft of first double-shaft air cylinder, fastener elastic strip middle pressing piece is located in the position above the middle of placing port, shuttle port is equipped in the both sides of bottom support. The utility model has the advantages of higher clamping efficiency, faster fastener elastic strip replacement speed.

Description

Technical Field

[0001] This utility model relates to the technical field of track fastener testing equipment, specifically a quick clamping mechanism for a track fastener spring clip fatigue testing fixture. Background Technology

[0002] Rail fasteners are essential components used on railway tracks. Their main function is to alleviate stress generated by train operation, protect and secure the rails, and ensure track gauge stability. Therefore, rail fasteners play a crucial role in the railway track system, and their performance directly affects the safety and stability of the railway. To ensure the quality and reliability of the fasteners, fatigue testing is typically required.

[0003] However, in existing fatigue tests of track fastener spring clips, the clamping of the spring clips usually adopts traditional methods such as bolt tightening. The fastener spring clip is first placed at the designated test position and then tightened with bolts. The entire clamping process of this method is relatively cumbersome, requiring a lot of time to tighten and loosen the bolts, as well as to remove and place the fastener spring clip, resulting in low test efficiency and difficulty in achieving a quick workpiece clamping effect.

[0004] Therefore, it is necessary to provide a new quick clamping mechanism for the fatigue testing fixture of track fastener spring clips to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a quick clamping mechanism for a track fastener spring fatigue test fixture with high clamping efficiency and fastener spring replacement speed.

[0006] To solve the above-mentioned technical problems, the quick clamping mechanism of the track fastener spring clip fatigue testing fixture provided by this utility model includes: a bottom support and a test platform fixedly installed on the top of the bottom support. The top of the test platform has a placement opening, and a top folding plate is fixedly installed on the top of the test platform. A first dual-axis cylinder is fixedly installed on the top folding plate, and the output shaft of the first dual-axis cylinder passes through the top of the top folding plate and is movably connected to the top of the top folding plate. A middle pressure plate of the fastener spring clip is fixedly installed on the output shaft of the first dual-axis cylinder. The middle pressure plate of the fastener spring clip is located directly above the center of the placement opening. Shuttle openings are provided on both sides of the bottom support. A single-headed screw is rotatably installed inside the bottom support, and a movable [device / feature] is threaded onto the single-headed screw. The movable seat contacts one inner wall of the bottom support. An installation platform is fixedly installed on the top of the movable seat. A partition plate is fixedly installed above the installation platform. Both the installation platform and the partition plate pass through one of the shuttle openings without contacting the inner wall of the shuttle opening. Two single-axis cylinders are fixedly installed at the bottom of the partition plate. The output shafts of the two single-axis cylinders pass through the partition plate and are movably connected to it. A feeding base is fixedly installed on the output shafts of the two single-axis cylinders. The feeding base is adapted to the placement opening, and one of the feeding bases is located inside the placement opening. Its top end face is flush with the top end face of the test platform. Two straightening rods are provided above the test platform to push the fastener spring strip to the center position of the feeding base.

[0007] Preferably, the top of each of the two feeding bases is fixedly mounted with two side limiting plates by bolts, and the top of the feeding base has multiple sets of threaded holes to adjust the spacing between the two side limiting plates.

[0008] Preferably, the bottom support has two fixed feet fixedly installed at its bottom, each of the two fixed feet having two mounting holes. The bottom support also has two second dual-axis cylinders fixedly installed at its bottom, each of the two second dual-axis cylinders having a connecting plate fixedly installed on its output shaft. A transverse push rod is fixedly installed on the side of each of the two connecting plates that is close to each other. The ends of the two transverse push rods that are close to each other are respectively fixedly connected to the two straightening rods. Each of the two connecting plates has an clearance opening so that the partition plate can pass through it.

[0009] Preferably, a servo motor is fixedly installed on one outer wall of the bottom bracket, the output shaft of the servo motor is fixedly connected to one end of the single-head screw, and two transverse reinforcing rods are fixedly installed inside the bottom bracket, both of which pass through the movable seat and are slidably connected to it.

[0010] Preferably, four connecting rods are fixedly installed on the top of the installation platform, and the top ends of the four connecting rods are fixedly connected to the partition plate.

[0011] Preferably, both of the corrective rods are covered with protective pads made of rubber.

[0012] Preferably, reinforcing ribs are fixedly installed on both sides of the test platform, and the two reinforcing ribs pass through the two connecting pieces respectively and are slidably connected to the corresponding connecting pieces.

[0013] Compared with related technologies, the quick clamping mechanism of the track fastener spring clip fatigue test fixture provided by this utility model has the following advantages: This invention, by setting two sets of feeding bases, allows the threaded engagement between a single-headed screw and a movable seat to alternately move the fastener spring strip to be tested into the placement opening. A straightening rod pushes it to the center position, and then the middle pressure plate of the fastener spring strip clamps it tightly, enabling fatigue testing. Each clamping operation automatically moves the fastener spring strip to the test platform. Compared to the traditional method of first placing the fastener spring strip and then fixing it with bolts, this method is faster and significantly improves testing efficiency. Attached Figure Description

[0014] Figure 1 A schematic diagram of the quick clamping mechanism for the fatigue testing fixture for track fastener spring clips provided by this utility model; Figure 2 This is a schematic diagram of the oblique upward view structure of this utility model; Figure 3 This is a schematic diagram of the connection structure between the single-headed screw and the movable base in this utility model; Figure 4 This is a schematic diagram of the connection structure between the mounting platform and the partition plate in this utility model; Figure 5 This is a schematic diagram of the connection structure between the material feeding base and the side limiting piece in this utility model.

[0015] The following are labeled in the diagram: 1. Bottom support; 2. Test platform; 3. Placement opening; 4. Top folding plate; 5. First dual-axis cylinder; 6. Intermediate pressure plate of fastener spring strip; 7. Shuttle opening; 8. Single-headed screw; 9. Moving seat; 10. Installation platform; 11. Single-axis cylinder; 12. Divider plate; 13. Feeding base; 14. Side limit plate; 15. Second dual-axis cylinder; 16. Connecting plate; 17. Lateral push rod; 18. Correcting rod. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please refer to the following: Figures 1-5The quick clamping mechanism of the track fastener spring fatigue test fixture includes: a bottom support 1 and a test platform 2 fixedly installed on the top of the bottom support 1. A placement opening 3 is provided on the top of the test platform 2, and a top folding plate 4 is fixedly installed on the top of the test platform 2. A first dual-axis cylinder 5 is fixedly installed on the top folding plate 4, and its output shaft passes through the top of the top folding plate 4 and is movably connected to the top of the top folding plate 4. A middle pressure plate 6 for the fastener spring is fixedly installed on the output shaft of the first dual-axis cylinder 5. The middle pressure plate 6 is located directly above the center of the placement opening 3, thus allowing the fastener spring to be clamped from the center. The fastener is tightly fixed to expose both sides of the spring clip, allowing for smooth fatigue testing on both sides. Shuttle openings 7 are provided on both sides of the bottom bracket 1, and a single-headed screw 8 is rotatably installed inside the bottom bracket 1. A servo motor is fixedly installed on one side of the outer wall of the bottom bracket 1, with its output shaft fixedly connected to one end of the single-headed screw 8. A movable seat 9 is threaded onto the single-headed screw 8. To ensure linear horizontal movement of the movable seat 9, two transverse reinforcing rods are fixedly installed inside the bottom bracket 1. Both transverse reinforcing rods penetrate the movable seat 9 and are slidably connected to it. The movable seat 9 contacts one side of the inner wall of the bottom bracket 1, and the movable seat 9... An installation platform 10 is fixedly installed at the top. Four connecting rods are fixedly installed on the top of the installation platform 10. A partition plate 12 is fixedly installed at the top of each of the four connecting rods. Both the installation platform 10 and the partition plate 12 pass through one of the shuttle openings 7 without contacting the inner wall of the shuttle opening 7. Two single-axis cylinders 11 are fixedly installed at the bottom of the partition plate 12. The output shafts of both single-axis cylinders 11 pass through the partition plate 12 and are movably connected to it. A feeding base 13 is fixedly installed on the output shaft of each of the two single-axis cylinders 11. The feeding base 13 is adapted to the placement opening 3, and one of the feeding bases 13 is located inside the placement opening 3. The top end face is flush with the top end face of the test platform 2. Two straightening rods 18 are provided above the test platform 2 to push the fastener spring strip to the center position of the feeding base 13. Both straightening rods 18 are covered with rubber protective pads to prevent the fastener spring strip from being pinched. In addition, two side limiting plates 14 are fixedly installed on the top of the two feeding bases 13 by bolts to form a resisting effect on the front and back sides of the fastener spring strip, so that it remains centered in the longitudinal position. In order to increase the applicability, multiple sets of threaded holes are opened on the top of the feeding base 13 to adjust the spacing of the corresponding two side limiting plates 14.

[0018] In the above method, in order to drive the straightening rod 18 to move horizontally and push the fastener spring strip on the feeding base 13 to the horizontal center position, two fixed feet are fixedly installed at the bottom of the bottom bracket 1. Each of the two fixed feet has two mounting holes, through which the bottom bracket 1 can be installed on the fatigue testing equipment. Two second dual-axis cylinders 15 are fixedly installed at the bottom of the bottom bracket 1. Connecting plates 16 are fixedly installed on the output shafts of the two second dual-axis cylinders 15. A horizontal push rod 17 is fixedly installed on the side of the two connecting plates 16 that are close to each other. The ends of the two horizontal push rods 17 that are close to each other are fixedly connected to the two straightening rods 18 respectively. Both connecting plates 16 have clearance openings, so that the partition plate 12 can pass through them to form a clearance effect.

[0019] In this method, in order to relieve the load on the output shaft of the second dual-shaft cylinder 15, reinforcing ribs are fixedly installed on both sides of the test platform 2. The two reinforcing ribs pass through the two connecting plates 16 respectively and are slidably connected to the corresponding connecting plates 16.

[0020] The working principle of the quick clamping mechanism of the track fastener spring clip fatigue test fixture provided by this utility model is as follows: In actual use, the quick clamping mechanism is first fixedly installed on the track fastener spring strip fatigue test equipment through the mounting holes on the fixed foot support. In the initial state, the output shaft of the second dual-axis cylinder 15 is in the extended state, and the output shaft of the single-axis cylinder 11 corresponding to the material feeding base 13 located in the placement port 3 is also in the extended state. Then, take out a fastener spring strip and place it on the material feeding base 13 located in the placement opening 3, with its front and back sides abutting against the two side limiting plates 14 respectively. Then, start the output shafts of the two second dual-axis cylinders 15 to extend. Driven by the connecting plate 16, the two straightening rods 18 move closer to each other, finally pushing the fastener spring strip to the center position. Then, start the output shafts of the second dual-axis cylinders 15 to retract, bringing the straightening rods 18 back to their original positions. Then, start the output shafts of the first dual-axis cylinder 5 to extend, and the middle pressure plate 6 of the fastener spring strip descends and finally presses down on the middle part of the fastener spring strip, exposing the test parts on both sides. Then, fatigue test is carried out. During the fatigue test, another fastener spring can be removed and placed on another material feeding base 13, while waiting for the previous fastener spring test to finish. After the previous fastener spring test is completed, the output shaft of the first dual-axis cylinder 5 is quickly retracted to separate the middle pressure plate 6 of the fastener spring from the tested fastener spring. Then, the output shaft of the corresponding single-axis cylinder 11 is retracted to move the material feeding base 13 located in the placement port 3 downward. Subsequently, the servo motor is started in the forward direction, and its output shaft drives the single-head screw 8 to rotate. The moving seat 9 moves horizontally with the installation platform 10 until the moving seat 9 moves to contact the inner wall of the other side of the bottom bracket 1. Then, the servo motor is turned off. At this time, the fastener spring to be tested moves to the bottom of the placement port 3. Then, the output shaft of the corresponding single-axis cylinder 11 is extended to bring the material feeding base 13 into the placement port 3. Then, the second dual-axis cylinder 15 can be started to push the fastener spring on it to the center position. Then, the first dual-axis cylinder 5 is started to use the middle pressure plate 6 of the fastener spring to press and fix it. Then, the fatigue test can be carried out. Meanwhile, the tested fastener spring is removed, and the next fastener spring to be tested is placed on top. The test of the previous fastener spring is waited for to be completed. When the previous test is completed, the output shaft of the corresponding single-axis cylinder 11 is retracted, and the material feeding base 13 in the placement port 3 is brought down to its original position. Then, the servo motor is started in reverse, and the next fastener spring to be tested can be moved into the placement port 3. Then, the output shaft of the corresponding single-axis cylinder 11 is extended to continue the fatigue test. The above process is repeated until all fastener springs have been tested. Furthermore, in subsequent use, by adjusting the installation position of the side limiting piece 14, it can be applied to fatigue testing of fastener springs of different widths, thus improving its applicability.

[0021] Compared with related technologies, the quick clamping mechanism of the track fastener spring clip fatigue test fixture provided by this utility model has the following advantages: This utility model provides a quick clamping mechanism for a fatigue testing fixture for track fastener spring clips. By setting two sets of feeding bases 13, the fastener spring clip to be tested can be moved into the placement opening 3 alternately through the threaded engagement between the single-headed screw 8 and the moving seat 9. The fastener spring clip is then pushed to the center position by the straightening rod 18 and pressed and fixed by the middle pressure plate 6 of the fastener spring clip, thus enabling fatigue testing. Each clamping can automatically move the fastener spring clip to the test platform 2. Compared with the traditional method of first placing the fastener spring clip and then fixing it with bolts, this method is faster when changing the fastener spring clip and significantly improves the testing efficiency.

[0022] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A quick clamping mechanism for a fatigue testing fixture for rail fastener spring clips, comprising a bottom support and a test platform fixedly mounted on top of the bottom support, characterized in that, The test platform has a placement opening at its top. A top folding plate is fixedly installed on the top of the test platform, and a first dual-axis cylinder is fixedly installed on the top folding plate. The output shaft of the first dual-axis cylinder passes through the top of the top folding plate and is movably connected to the top of the top folding plate. A fastener spring clip is fixedly installed on the output shaft of the first dual-axis cylinder. The fastener spring clip is located above the center of the placement opening. Shuttle openings are provided on both sides of the bottom support. A single-headed screw is rotatably installed inside the bottom support. A movable seat is threaded onto the single-headed screw. The movable seat contacts one inner wall of the bottom support. The top of the movable seat is fixed. An installation platform is fixedly installed, and a partition plate is fixedly installed on top of the installation platform. Both the installation platform and the partition plate pass through one of the shuttle openings without contacting the inner wall of the shuttle opening. Two single-axis cylinders are fixedly installed at the bottom of the partition plate. The output shafts of the two single-axis cylinders pass through the partition plate and are movably connected to it. A feeding base is fixedly installed on the output shaft of each of the two single-axis cylinders. The feeding base is adapted to the placement opening, and one of the feeding bases is located inside the placement opening. Its top end face is flush with the top end face of the test platform. Two straightening rods are provided above the test platform to push the fastener spring strip to the center position of the feeding base.

2. The quick clamping mechanism of the track fastener spring clip fatigue test fixture according to claim 1, characterized in that, The top of each of the two feeding bases is fixed with two side limiting plates by bolts, and the top of the feeding base has multiple sets of threaded holes, which can adjust the spacing between the two side limiting plates.

3. The quick clamping mechanism of the track fastener spring clip fatigue test fixture according to claim 1, characterized in that, The bottom support has two fixed feet fixedly installed at its bottom, and each of the two fixed feet has two mounting holes. The bottom support also has two second dual-axis cylinders fixedly installed at its bottom. Each of the two second dual-axis cylinders has a connecting plate fixedly installed on its output shaft. A transverse push rod is fixedly installed on the side of each of the two connecting plates that is close to each other. The ends of the two transverse push rods that are close to each other are respectively fixedly connected to the two straightening rods. Each of the two connecting plates has an clearance opening so that the partition plate can pass through it.

4. The quick clamping mechanism of the track fastener spring clip fatigue test fixture according to claim 1, characterized in that, A servo motor is fixedly installed on one side of the outer wall of the bottom bracket. The output shaft of the servo motor is fixedly connected to one end of the single-head screw. Two transverse reinforcing rods are fixedly installed inside the bottom bracket. Both transverse reinforcing rods pass through the movable seat and are slidably connected to it.

5. The quick clamping mechanism of the track fastener spring clip fatigue test fixture according to claim 1, characterized in that, Four connecting rods are fixedly installed on the top of the installation platform, and the top ends of the four connecting rods are fixedly connected to the partition plate.

6. The quick clamping mechanism of the track fastener spring clip fatigue test fixture according to claim 1, characterized in that, Both of the corrective rods are covered with protective pads made of rubber.

7. The quick clamping mechanism of the track fastener spring clip fatigue test fixture according to claim 3, characterized in that, The test platform is fixedly equipped with reinforcing ribs on both sides, and the two reinforcing ribs pass through the two connecting pieces respectively and are slidably connected to the corresponding connecting pieces.

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