Automatic impact testing device for railway fastener nylon products

Abstract

The present application relates to a kind of automatic impact test device of railway fastener nylon product, it includes the bottom plate of horizontal arrangement and the vertical plate of being fixed on the bottom plate, and the vertical plate is set with guide slot in one side along vertical direction;Vertical plate front side top is fixed with guide seat and is set with the guide hole of being penetrated up and down in guide seat, impact rod is arranged in guide hole, and fixed jaw corresponding with impact rod is fixed below guide seat, and lifting jaw is arranged below fixed jaw in a way that it can be lifted;Clamping device for fixing test product is arranged on the bottom plate, and second sensor for detecting impact rod is fixed on the front side of vertical plate above clamping device;The shaft ring with diameter greater than the diameter of impact rod is fixed in the lower part of impact rod, and first sensor for detecting the position of shaft ring is fixed on the vertical plate;Limiting mechanism for supporting the lower end of impact rod is arranged on the front side of vertical plate.The automatic impact test device, save manpower, greatly reduce labor intensity, and it is high in degree of automation and safe to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of railway fastener detection, and particularly relates to a railway fastener nylon product automatic impact test device. BACKGROUND

[0002] In a railway system, a rail fastener is an important component that connects a rail and a sleeper. In addition to its fixing function, it also has a buffering and damping function. Insulating gauge blocks and baffle seats are commonly used in rail fasteners. These nylon products are important accessories for rail fasteners, have a wide range of applications, and are in high demand. They are required to have high strength and a certain degree of toughness. Impact testing is an important detection method that aims to evaluate the impact resistance of materials or products under impact loads to determine their reliability and safety in real working environments. It helps to determine the performance of materials or products under impact loads and assess their safety in accidents, collisions, or other unexpected situations. In addition, impact testing is used to study the response and behavior of different materials under impact loads, which helps to improve the design and development of materials to enhance their impact resistance. Through impact testing, manufacturers can evaluate and improve the impact resistance of their products, design more durable and reliable products, and improve product quality and user satisfaction. Manufacturers also use impact testing to ensure that products meet industry standards and specifications, ensuring that products meet safety and quality requirements.

[0003] The existing impact device test method is as follows: person A clamps and fixes the product, person B lifts the impact rod and rests it on the baffle, when person A removes the baffle, the impact rod freely falls and impacts the center of the two limbs of the product, completing one impact; then person B lifts the impact rod again to prepare for the second impact, and each product is continuously impacted for 6 times. The existing impact device requires two people to complete, consumes manpower, and needs to repeat hundreds of impacts per day, which is labor-intensive.

[0004] Therefore, it is necessary to provide a railway fastener nylon product automatic impact test device that saves manpower and reduces labor intensity SUMMARY

[0005] The technical problem to be solved by the present application is to provide a railway fastener nylon product automatic impact test device that saves manpower and reduces labor intensity.

[0006] To solve the above problems, the technical solution adopted by the present application is:

[0007] The utility model provides an automatic impact test device of railway fastener nylon product, which comprises a horizontal bottom plate and a vertical stand plate fixed on the bottom plate, a guide groove is formed on one side of the stand plate along the vertical direction, a guide seat is fixed on the front top of the stand plate, an up-down through hole is formed in the guide seat, an impact rod is arranged in the guide hole, a fixed clamp jaw corresponding to the impact rod is fixed below the guide seat, a lifting clamp jaw is arranged below the fixed clamp jaw, a clamping device for fixing the test product is arranged on the bottom plate, a second sensor for detecting the impact rod is fixed on the front side of the stand plate above the clamping device, a shaft ring with a diameter larger than that of the impact rod is fixed on the lower part of the impact rod, a first sensor for detecting the position of the shaft ring is fixed on the stand plate, and a limiting mechanism for supporting the lower end of the impact rod is arranged on the front side of the stand plate.

[0008] As an embodiment of the utility model, the clamping device comprises an adjusting mechanism and a clamping mechanism arranged on the adjusting mechanism, the adjusting mechanism comprises a T-shaped fixed block fixed on the bottom plate, a second adjusting block and a third adjusting block are slidably clamped on the fixed block along the front-back direction, a T-shaped second sliding groove corresponding to the outer contour of the fixed block is formed in the bottom of the second adjusting block and the third adjusting block, threaded holes are horizontally formed in the left and right sides of the second adjusting block and the third adjusting block, and second fastening bolts are arranged in the threaded holes, an arrow downward pointer is arranged on the left side or the right side of the second adjusting block and the third adjusting block, a second scale corresponding to the pointer is fixed on the bottom plate along the front-back direction, and a plurality of clamping mechanisms are arranged on the second adjusting block.

[0009] As an embodiment of the utility model, a plurality of first adjusting blocks are slidably clamped on the top of the second adjusting block along the left-right direction, a T-shaped first sliding groove is formed in the top of the second adjusting block along the left-right direction, a T-shaped first sliding block adapted to the first sliding groove is arranged on the bottom of the first adjusting block, threaded holes are vertically formed in the first adjusting block, and first fastening bolts are arranged in the threaded holes; the clamping mechanism is fixed on the top of the first adjusting block.

[0010] As an embodiment of the utility model, the clamping mechanism is a quick compression clamp, and the compression head is used for compressing the test product placed between the second adjusting block and the third adjusting block.

[0011] As an embodiment of the utility model, the limiting mechanism comprises a T-shaped mounting seat fixed on the stand plate, an installation groove is horizontally formed in the front end of the mounting seat, the installation groove is hingedly connected with one end of a limiting block through a rotating shaft, a third sensor for detecting the limiting block is fixed on the right side of the mounting seat, and when the limiting block is rotated by 180 DEG to the left side of the mounting seat, the lower end of the impact rod above the limiting block can be supported.

[0012] As an embodiment of the present application, a limiting plate is vertically arranged at the front end of the mounting seat, a long hole is formed along the length direction of the limiting plate, and the limiting plate is installed at the front end of the mounting seat by a limiting bolt passing through the long hole.

[0013] As an embodiment of the present application, a sensor support is fixedly arranged at the upper portion of the front side of the vertical plate, the first sensor is a laser sensor, and the laser sensor comprises a transmitter and a receiver arranged on the sensor support, the transmitter and the receiver are respectively arranged on the left and right sides of the impact rod, the distance between the laser line emitted by the transmitter and the axis of the impact rod is greater than the diameter of the impact rod and less than the outer diameter of the shaft ring.

[0014] As an embodiment of the present application, the lifting clamp is installed on the fixing seat and located on the left side of the impact rod, the fixing seat is connected with the lifting device on the rear side of the vertical plate after passing through the guide groove, and the lifting device adopts a linear module arranged vertically, and the fixing seat is connected with the slider on the linear module through the connecting plate.

[0015] As an embodiment of the present application, a first scale is vertically arranged on the upper portion of the front side of the vertical plate on the left and right sides of the impact rod, and a foot cup is arranged at the corner of the bottom of the bottom plate.

[0016] As an embodiment of the present application, a protective cover is arranged on the outer side of the vertical plate, the upper portion of the front side of the vertical plate is provided with a main machine cover, the lower portion of the front side of the vertical plate is provided with a front protective cover, the lower portion of the front side of the vertical plate is provided with a cabinet door of a split door type, the rear side of the vertical plate is provided with a rear protective cover, the front protective cover and the cabinet door are made of transparent material, and the main machine cover is provided with a PLC integrated machine, a control button and an emergency stop button.

[0017] The beneficial effects generated by the above technical scheme are as follows:

[0018] The automatic impact test device for railway fastener nylon products provided by the present application saves manpower and greatly reduces labor intensity, and through simulation verification, the automatic impact test device can realize independent operation of one person and easily complete the detection work.

[0019] During the impact test, the impact point is required to fall on the center position of the convex rib of the two limbs of the test product, but the product size of different test products is different, the convex rib position is different, and it is not suitable to use a fixed clamp to fix the product, the present application adjusts the positions of the second adjusting block and the third adjusting block on the fixing block according to different products, so that the convex ribs of the two limbs of the product are located directly below the impact rod, and the quick loading and unloading of the product can be realized in cooperation with the clamping mechanism. In addition, for different products, the positions required to be pressed are different, and by adjusting the position of the first adjusting block on the second adjusting block, the effective pressing of different products can be realized. By tightening the second fastening bolt, the relative position of the first adjusting block and the second adjusting block can be locked.

[0020] The impact rod will rebound after impacting the product, causing secondary impact of the product. To solve this problem, the second sensor is used to monitor the rebound of the impact rod. When the second sensor receives the rebound information, the lifting clamp grips the impact rod to avoid secondary impact, and then sends the impact rod back to the top end. This method can effectively solve the rebound problem.

[0021] The height requirement of the impact rod from the product is H. Different products have different heights. To ensure that the impact height meets the requirements, the height of different products is recorded in the program, and then the program calculates the height of the impact rod according to the height of the product plus H. Before the test, personnel only need to select the corresponding program, and the lifting clamp can lift the impact rod to the required height. When adjusting the height of the impact rod through the lifting clamp, when the first sensor detects the shaft ring, the height of the impact rod from the ground is known at this time. At this time, only the required height of the impact rod needs to be adjusted up and down, and the height adjustment is accurate and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the present application.

[0023] Figure 2 is another angle structural schematic diagram of the present application.

[0024] Figure 3 is Figure 2 is a local enlarged schematic view of A in the present application.

[0025] Figure 4 is another angle structural schematic diagram of the present application.

[0026] Figure 5 is a structural schematic diagram of the adjusting mechanism and the clamping mechanism in the present application.

[0027] Figure 6 is another angle structural schematic diagram of the adjusting mechanism and the clamping mechanism in the present application.

[0028] Figure 7 is a structural schematic diagram of the limiting mechanism in the present application.

[0029] Figure 8 is a structural schematic diagram of the protective cover in the present application.

[0030] Figure 9 is another angle structural schematic diagram of the protective cover in the present application.

[0031] The components include: 1. Vertical plate, 2. Guide groove, 3. Guide seat, 4. Guide hole, 5. Sensor bracket, 6. Transmitter, 7. Receiver, 8. Fixed gripper, 9. Lifting gripper, 10. Fixed seat, 11. Linear module, 1101. Connecting plate, 12. Second sensor, 13. Mounting seat, 1301. Mounting groove, 14. Third sensor, 15. Rotary shaft, 16. Limiting block, 17. Limiting plate, 18. Long hole, 19. Limiting bolt, 20. Impact rod, 21. Collar, 22. First scale, 23. Quick clamp, 2301. 24 First adjusting block, 25 First slider, 26 First fastening bolt, 27 Second adjusting block, 2701 First slide groove, 28 Third adjusting block, 29 Second slide groove, 30 Second fastening bolt, 31 Pointer, 32 Second scale, 33 Fixing block, 34 Base plate, 35 Foot cup, 36 Front protective cover, 37 Main unit cover, 38 Cabinet door, 39 PLC all-in-one machine, 40 Control button, 41 Emergency stop button, 42 Handle, 43 Rear protective cover, 44 Laser line, 45 Test product. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the present invention clearer, the invention will be described clearly and completely below in conjunction with specific embodiments.

[0033] like Figures 1-4 An automatic impact testing device for nylon railway fasteners is shown, comprising a horizontally arranged base plate 34 and a vertically fixed plate 1 on the base plate 34. A guide groove 2 is formed on one side of the vertical plate 1 along a vertical direction; in this embodiment, the guide groove 2 is located on the left side of the vertical plate 1. A guide seat 3 is fixed to the top front side of the vertical plate 1, and a guide hole 4 is formed on the guide seat 3, through which an impact rod 20 is disposed. A fixed clamping claw 8 corresponding to the impact rod 20 is fixed below the guide seat 3, and a lifting clamping claw 9 is provided below the fixed clamping claw 8 for vertical movement. The base plate 34 is equipped with a clamping device for fixing the test product 45. Above the clamping device, a second sensor 12 for detecting the impact rod 20 is fixed on the front side of the upright plate 1. A collar 21 with a diameter larger than the impact rod 20 is fixed to the lower part of the impact rod 20. A first sensor for detecting the position of the collar 21 is fixed on the upright plate 1. The first sensor emits light horizontally and can only detect the position of the collar 21, not the position of the impact rod 20. A limiting mechanism for supporting the lower end of the impact rod 20 is provided on the front side of the upright plate 1. The fixed gripper 8 and the lifting gripper 9 are pneumatic grippers connected to an air source via a solenoid valve. The solenoid valve and connecting pipe are located on the rear side of the upright plate 1. The second sensor 12 and the third sensor 14 are photoelectric sensors. This automatic impact testing device for railway fastener nylon products saves manpower, greatly reduces labor intensity, has a high degree of automation, and is safe to use.

[0034] like Figure 5 andFigure 6 As shown, the clamping device comprises an adjusting mechanism and clamping mechanisms arranged on the adjusting mechanism, the adjusting mechanism comprises a T-shaped fixing block 33 fixed on the bottom plate 34, the second adjusting block 27 and the third adjusting block 28 are clamped and slidably arranged on the fixing block 33 along the front-rear direction, the second adjusting block 27 and the third adjusting block 28 are provided with a T-shaped second sliding groove 29 corresponding to the outer contour of the fixing block 33 at the bottom, the second adjusting block 27 and the third adjusting block 28 are provided with a threaded hole horizontally arranged on the left side or the right side and a second fastening bolt 30 arranged in the threaded hole, the left side or the right side of the second adjusting block 27 and the third adjusting block 28 is provided with a pointer 31 with an arrow pointing downward, the bottom plate 34 is fixed with a second scale 32 corresponding to the pointer 31 along the front-rear direction, and the second adjusting block 27 is provided with a plurality of clamping mechanisms. The impact test requires that the impact point falls on the center position of the convex edges of the two limbs of the test product, but the sizes of different test products are different, the positions of the convex edges are different, and it is not suitable to use a fixed clamp to fix the product. According to the present application, the positions of the second adjusting block 27 and the third adjusting block 28 on the fixing block 33 are adjusted according to different products, so that the convex edges of the two limbs of the product are located directly below the impact rod 20, and the clamping mechanism can realize quick loading and unloading of the product. The positions of the second adjusting block 27 and the third adjusting block 28 can be accurately adjusted and recorded by the pointer 31 and the second scale 32. By tightening the second fastening bolt 30, the relative positions of the second adjusting block 27 and the third adjusting block 28 and the fixing block 33 can be locked.

[0035] As a further optimization, the top of the second adjusting block 27 is clamped and slidably arranged with a plurality of first adjusting blocks 24 along the left-right direction, the top of the second adjusting block 27 is provided with a T-shaped first sliding groove 2701 along the left-right direction, the bottom of the first adjusting block 24 is provided with a T-shaped first sliding block 25 matched with the first sliding groove 2701, and the first adjusting block 24 is vertically provided with a threaded hole and a first fastening bolt 26 arranged in the threaded hole; the clamping mechanism is fixed on the top of the first adjusting block 24. For different products, the positions that need to be pressed are different, and by adjusting the positions of the first adjusting blocks 24 on the second adjusting block 27, the effective pressing of different products can be realized. By tightening the first fastening bolt 26, the relative positions of the first adjusting block 24 and the second adjusting block 27 can be locked.

[0036] In this embodiment, the clamping mechanism is a quick pressing clamp 23, and the pressure head 2301 is used to press the test product 45 placed between the second adjusting block 27 and the third adjusting block 28, which is a conventional technical means in the art and will not be described in detail here.

[0037] As Figure 7As shown, the limiting mechanism includes a T-shaped mounting base 13 fixed on the upright plate 1. The mounting base 13 is located on the right side of the impact rod 20 and includes a horizontal plate and a vertical plate. The horizontal plate is fixedly connected to the front side of the upright plate 1, and the vertical plate is set perpendicular to the upright plate 1. The front end of the vertical plate of the mounting base 13 has a horizontally opened mounting groove 1301. The mounting groove 1301 is hinged to one end of the limiting block 16 through a vertically set rotating shaft 15, so as to realize the horizontal swing of the limiting block 16. The left and right swing limits are both parallel to the front side of the upright plate 1. A third sensor 14 for detecting whether the limiting block 16 is located on the right side of the mounting base 13 is fixed on the right side of the mounting base 13. When the limiting block 16 rotates 180° to the left side of the mounting base 13, it can support the lower end of the impact rod 20 located above it. The position of the limit block 16 can be detected by the third sensor 14. When the cabinet door 38 is opened, if the third sensor 14 can still detect the limit block 16 after a set time, it means that the limit block 16 is located on the right side of the mounting base 13 and does not protect against the falling impact rod 20, and an alarm will be sounded. When the cabinet door 38 is closed, if the third sensor 14 still cannot detect the limit block 16 after a set time, it means that the limit block 16 is located on the left side of the mounting base 13 and still protects against the falling impact rod 20, and an alarm will be sounded.

[0038] A long, narrow limiting plate 17 is vertically positioned at the front end of the mounting base 13. The limiting plate 17 has an elongated hole 18 along its length. The limiting plate 17 is mounted to the front end of the mounting base 13 via a limiting bolt 19 passing through the elongated hole 18. The limiting plate 17 is used to lock the position of the limiting block 16, preventing it from rotating freely under vibration, which could affect the descent of the impact rod 20 or cause it to fall accidentally.

[0039] like Figure 3 As shown, a sensor bracket 5 is fixedly mounted on the upper front side of the upright plate 1. The first sensor is a laser sensor, including a transmitter 6 and a receiver 7 mounted on the sensor bracket 5. The transmitter 6 and the receiver 7 are located on the left and right sides of the impact rod 20, respectively. The distance between the laser line 44 emitted by the transmitter 6 and the axis of the impact rod 20 is greater than the diameter of the impact rod 20 and less than the outer diameter of the collar 21.

[0040] In this embodiment, the lifting gripper 9 is mounted on the fixed base 10, located to the left of the impact rod 20. The fixed base 10 passes through the guide groove 2 and is connected to the lifting device located behind the upright plate 1. The lifting device is a vertically arranged linear module 11, and the fixed base 10 is connected to the slider on the linear module 11 through a connecting plate 1101. The linear module 11 is equipped with a distance measuring sensor, which can accurately detect and control the movement distance of its slider.

[0041] The clamping jaw of the fixed clamping jaw 8 faces the front side, the clamping jaw of the lifting clamping jaw 9 faces the right side, and the clamping jaw of the fixed clamping jaw 8 and the clamping jaw of the lifting clamping jaw 9 correspond to the impact rod 20 in the up-down direction.

[0042] A first scale 22 is vertically arranged on the upper part of the front side of the vertical plate 1 on both sides of the impact rod 20, which can be used for recording and checking when the height of the impact rod 20 is adjusted by the lifting clamping jaw 9; a foot cup 35 is arranged at the bottom corner of the bottom plate 34, which is used to support and adjust the horizontal position of the bottom plate 34.

[0043] As shown in Figure 8 and Figure 9 The outer side of the vertical plate 1 is provided with a protective cover, wherein the upper part of the front side of the vertical plate 1 is provided with a main cover 37, the lower part of the two sides is provided with a front protective cover 36, the lower part of the front side is provided with a cabinet door 38 of the opposite opening type, the cabinet door 39 is provided with a handle 42, and the cabinet door 38 is closed and tightly closed by magnetic attraction; the rear side of the vertical plate 1 is provided with a rear protective cover 43; the front protective cover 36 and the cabinet door 38 are made of transparent material, the main cover 37 is provided with a PLC integrated machine 39, a control button 40 and an emergency stop button 41, and the control button 40 includes a start button, a stop button and a reset button.

[0044] Working process:

[0045] ① Turn on the power switch, and ventilate and power on the equipment;

[0046] ② Open the cabinet door 38, operate the adjusting mechanism and the clamping mechanism, and install the product to be tested;

[0047] ③ Select the corresponding program on the PLC integrated machine 39, lift the lifting clamping jaw 9 to the set height above the impact rod 20 above the test product 45, and tightly grasp it by the fixed clamping jaw 8; the lifting clamping jaw 9 is lowered to a position not far above the second sensor 12, the limiting plate 17 is manually lifted or swung, and the limiting block 16 is rotated to the right side of the mounting seat 13;

[0048] ④ Close the cabinet door 38, press the pneumatic button, loosen the fixed clamping jaw 8, and freely drop the impact rod 20 to perform the first impact; the lifting clamping jaw 9 detects the rebound of the impact rod 20, clamps the impact rod, and lifts it to the set height; the lifting clamping jaw 9 is loosened after the fixed clamping jaw 8 is tightly grasped, and the second impact is performed; according to the set number of times, the impact action is repeated until the product completes the preset number of impacts;

[0049] ⑤ After the first product completes the test, the lifting clamping jaw 9 lifts the impact rod 20 and fixes it by the fixed clamping jaw 8, the personnel opens the protective cover, manually pushes the baffle, lifts or swings the limiting plate 17, rotates the limiting block 16 to the left side of the mounting seat 13, prevents the impact rod 20 from falling, and then replaces the next product;

[0050] After the test, the impact rod 20 is sent to the bottom by the lifting gripper 9 to make it in a natural state of drooping, and the power switch is turned off.

[0051] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An automatic impact testing device for nylon railway fasteners, characterized in that: It includes a horizontally arranged base plate (34) and a vertical plate (1) fixed on the base plate (34). A guide groove (2) is provided on one side of the vertical plate (1) along the vertical direction. A guide seat (3) is fixed on the top front side of the vertical plate (1) and a guide hole (4) is provided on the guide seat (3) that runs vertically through the top and bottom. An impact rod (20) is provided in the guide hole (4). A fixed gripper (8) corresponding to the impact rod (20) is fixed below the guide seat (3). A lifting gripper (9) is provided below the fixed gripper (8) that can be raised and lowered. The fixed gripper (8) and the lifting gripper (9) are pneumatic grippers. The lifting gripper (9) is installed on the fixed seat (10) and is located to the left of the impact rod (20). The fixed seat (10) passes through the guide groove (2) and is connected to the lifting device located on the rear side of the vertical plate (1). The base plate (34) is provided with a clamping device for fixing the test product (45). A second sensor (12) for detecting the impact rod (20) is fixed above the clamping device on the front side of the upright plate (1). Before impact, the lifting jaw (9) raises the impact rod (20) to a set height above the test product (45) and is gripped by the fixed jaw (8). Then, the lifting jaw (9) descends to a position close to the second sensor (12). The second sensor (12) is used to detect the rebound of the impact rod (20). When the second sensor (12) receives the rebound information, the lifting jaw (9) grips the impact rod (20). 20), to avoid secondary impact, and then send the impact rod (20) back to the top; the lower part of the impact rod (20) is fixed with a collar (21) with a diameter larger than that of the impact rod (20), and the vertical plate (1) is fixed with a first sensor for detecting the position of the collar (21). When the first sensor detects the collar (21), the lifting gripper (9) adjusts the height of the impact rod (20) according to the height of the product being tested, so that the height of the impact rod (20) is the sum of the height of the product being tested and the required height of the impact rod (20) from the product being tested; the front side of the vertical plate (1) is provided with a limiting mechanism that can support the lower end of the impact rod (20); The limiting mechanism includes a mounting base (13) fixed on the upright plate (1). The mounting base (13) is located to the right of the impact rod (20). The mounting base (13) is T-shaped. The front end of the mounting base (13) is horizontally provided with a mounting groove (1301). The mounting groove (1301) is hinged to one end of the limiting block (16) through a rotating shaft (15) to realize the horizontal swing of the limiting block (16). The left and right swing limits are both parallel to the front side of the upright plate (1). A third sensor (14) for detecting whether the limiting block (16) is located to the right of the mounting base (13) is fixed on the right side of the mounting base (13). When the limiting block (16) rotates 180° to the left side of the mounting base (13), it can support the lower end of the impact rod (20) located above it. The mounting base (13) has a long strip-shaped limiting plate (17) vertically arranged at the front end. The limiting plate (17) has a long hole (18) along its length direction. The limiting plate (17) is installed at the front end of the mounting base (13) by a limiting bolt (19) passing through the long hole (18).

2. The automatic impact testing device for nylon railway fasteners according to claim 1, characterized in that: The clamping device includes an adjustment mechanism and a clamping mechanism disposed on the adjustment mechanism. The adjustment mechanism includes a fixing block (33) fixed on the base plate (34). The fixing block (33) is T-shaped. A second adjustment block (27) and a third adjustment block (28) are slidably mounted on the fixing block (33) in the front-back direction. The bottom of the second adjustment block (27) and the third adjustment block (28) are provided with a T-shaped second groove (29) corresponding to the outer contour of the fixing block (33). Threaded holes are horizontally provided on the left and right sides of the second adjustment block (27). The threaded hole is provided with a second fastening bolt (30), and the left and right sides of the third adjusting block (28) are both horizontally provided with threaded holes and the threaded holes are provided with a second fastening bolt (30); the left or right side of the second adjusting block (27) is provided with a pointer (31) with an arrow pointing downwards, the left or right side of the third adjusting block (28) is provided with a pointer (31) with an arrow pointing downwards, the base plate (34) is fixed with a second scale (32) corresponding to the pointer (31) along the front and back direction, and the second adjusting block (27) is provided with several clamping mechanisms.

3. The automatic impact testing device for nylon railway fasteners according to claim 2, characterized in that: The top of the second adjusting block (27) is fitted with several first adjusting blocks (24) that can slide along the left and right direction. The top of the second adjusting block (27) is provided with a T-shaped first sliding groove (2701) along the left and right direction. The bottom of the first adjusting block (24) is provided with a T-shaped first slider (25) that matches the first sliding groove (2701). The first adjusting block (24) is provided with a threaded hole vertically and a first fastening bolt (26) is provided in the threaded hole. The clamping mechanism is fixed on the top of the first adjusting block (24).

4. The automatic impact testing device for nylon railway fasteners according to claim 3, characterized in that: The clamping mechanism is a quick clamp (23), whose clamping head (2301) is used to clamp the test product (45) placed between the second adjusting block (27) and the third adjusting block (28).

5. An automatic impact testing device for nylon railway fasteners according to claim 1, characterized in that: A sensor bracket (5) is fixedly mounted on the upper front side of the upright plate (1). The first sensor is a laser sensor, including a transmitter (6) and a receiver (7) mounted on the sensor bracket (5). The transmitter (6) and receiver (7) are located on the left and right sides of the impact rod (20), respectively. The first sensor emits light horizontally and can only detect the position of the collar (21) but cannot detect the position of the impact rod (20). The distance between the laser line (44) emitted by the transmitter (6) and the axis of the impact rod (20) is greater than the diameter of the impact rod (20) and less than the outer diameter of the collar (21).

6. An automatic impact testing device for nylon railway fasteners according to claim 1, characterized in that: The lifting device adopts a vertically arranged linear module (11), and the fixed seat (10) is connected to the slider on the linear module (11) through the connecting plate (1101).

7. An automatic impact testing device for railway fastener nylon products according to any one of claims 1-6, characterized in that: The upper front side of the upright plate (1) has a first scale (22) vertically installed on both sides of the impact rod (20); the bottom corner of the base plate (34) is provided with a foot cup (35).

8. An automatic impact testing device for nylon railway fasteners according to claim 7, characterized in that: The outer side of the upright plate (1) is provided with a protective cover, wherein the upper front part of the upright plate (1) is provided with a main unit cover (37), the lower two sides are provided with front protective covers (36), the lower front part is provided with a double-door cabinet door (38), and the rear side of the upright plate (1) is provided with a rear protective cover (43); the front protective cover (36) and the cabinet door (38) are made of transparent material, and the main unit cover (37) is provided with a PLC integrated machine (39), control buttons (40) and emergency stop button (41).

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