Track fastener system transverse high-frequency dynamic stiffness testing machine and testing method

Abstract

The invention relates to the technical field of rail fasteners, and discloses a transverse high-frequency dynamic stiffness testing machine and method for a rail fastener system, the transverse high-frequency dynamic stiffness testing machine comprises a placement unit, a driving unit and a jacking unit, the placement unit comprises a workbench, a notch is formed in the upper portion of the workbench, and a circular placement disc is rotatably arranged in an inner cavity of the notch. According to the device, when the circular placement disc rotates, the track fastener body can be driven to rotate, so that the track fastener body is subjected to position changing, and when the track fastener body is subjected to position changing, the high-frequency detection assembly is suspended under pushing of the push rod and does not make contact with the track fastener body; therefore, it is guaranteed that the high-frequency detection assembly cannot be abraded to a certain extent when the track fastener body is subjected to transposition, meanwhile, it can be guaranteed that the same track fastener body can be detected through different pressing assemblies and the high-frequency detection assembly, and therefore the rigidity of the track fastener body can be detected more accurately.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail fasteners, and in particular relates to a rail fastener system transverse high-frequency dynamic stiffness testing machine and a testing method. Background Art

[0002] With the acceleration of global urbanization, rail transit, as an efficient, high-capacity, and environmentally friendly public transportation mode, has experienced rapid development. Whether it's high-speed rail, urban subways, or light rail, the mileage of various rail transit lines continues to climb, and operating speeds are also increasing. With frequent high-speed, heavy-load trains operating, track structures face increasingly stringent service conditions, and the performance requirements for rail fastening systems have reached unprecedented levels.

[0003] As a key component of the track structure, the rail fastening system secures the rails to the sleepers or trackbed, effectively buffers vertical and lateral impact loads from trains, and adjusts the rail position. It directly impacts the smoothness and stability of the track, as well as the safety and comfort of train operation. A high-performance rail fastening system ensures that the rails maintain precise geometric shape and position under complex and long-term load conditions, minimizing track deformation, reducing maintenance costs, and ensuring reliable rail transit operations.

[0004] However, when conducting stiffness testing on existing rail fasteners, they are often compressed by a clamping assembly and then tested by a high-frequency testing assembly. However, during the testing, due to the different diameters of the rail fasteners, although the position where the clamping assembly presses is still the middle area of the rail fastener, the side vision on both sides is small, and the stiffness on both sides cannot be accurately judged.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A rail fastener system lateral high-frequency dynamic stiffness testing machine includes a placement unit, a drive unit and a jacking unit, the placement unit includes a workbench, a slot is provided above the workbench, and a circular placement disk is rotatably arranged in the inner cavity of the slot, four rail fastener bodies arranged in a circular distribution are placed above the circular placement disk, four circumferentially distributed clamping assemblies are also provided above the workbench, and the four clamping assemblies are respectively located above the rail fastener body; the drive unit is used to drive the circular placement disk to rotate, and the rotation of the circular placement disk can also drive the rail fastener body to rotate, the drive unit can also be used to drive four high-frequency detection assemblies to rotate and move horizontally at the same time, and the drive unit can also be used to drive the jacking unit to move; the jacking unit includes multiple base plates, a high-frequency detection assembly is provided above each base plate, and a first telescopic rod is provided at the bottom of each high-frequency detection assembly.

[0008] As a preferred embodiment of the present invention, an inspection door is provided on the front side of the workbench, two mutually symmetrical support rods are provided above the workbench, fixing parts are provided on the two support rods, a hydraulic cylinder is provided on the fixing parts, and the output end of the hydraulic cylinder is movable through the fixing parts.

[0009] As a preferred embodiment of the present invention, four T-shaped placement plates distributed in a circular pattern are provided at the bottom of the hydraulic cylinder, and movable grooves are provided at the bottom of the four T-shaped placement plates. Moving sliders are slidably provided in the inner cavities of the four movable grooves, and two mutually symmetrical positioning rods are fixedly connected to the bottom of the four movable sliders. A clamping assembly is fixedly connected to the bottom of each of the positioning rods, and an L-shaped mounting plate is fixedly connected to the opposite ends of the four movable sliders, and a swing arm is provided between the four movable sliders.

[0010] As a preferred embodiment of the present invention, the drive assembly includes a servo motor, which is arranged at the bottom of the inner cavity of the workbench. The output end of the servo motor is fixedly connected to a rotating rod, and a rectangular plug-in cylinder is fixedly connected above the rotating rod. A rectangular plug-in rod is movably plugged into the inner cavity of the rectangular plug-in cylinder, and a rotating rod is fixedly connected above the rectangular plug-in rod. The rotating rod is rotatably arranged at the output end of the hydraulic cylinder at one end away from the rectangular plug-in rod.

[0011] As a preferred embodiment of the present invention, a special-shaped plate is arranged above the workbench, and the special-shaped plate is movable through the rotating rod. Two mutually symmetrical second telescopic rods are fixedly installed on the bottom of the special-shaped plate, and the other ends of the two second telescopic rods are arranged on the workbench. The side walls of the special-shaped plate are fitted with movable balls.

[0012] As a preferred embodiment of the present invention, a placing plate is provided on the side where the moving ball is away from the special-shaped plate, and a moving rod is provided on the end of the placing plate away from the moving ball, and a positioning block is fixedly connected to the end of the moving rod away from the placing plate, and a fixed block is movably passed through the moving rod, and two mutually symmetrical fixing rods are fixedly connected to the fixed block, and the two fixing rods respectively interact and pass through the positioning block, and the other end is fixedly connected to the L-shaped mounting plate, and a rocker arm is movably provided between the L-shaped mounting plate and the positioning block, and a return spring is provided on the moving rod, and the two ends of the return spring are respectively provided on the fixed block and the placing plate.

[0013] As a preferred embodiment of the present invention, the side wall of the rectangular plug-in cylinder is fixedly connected to a connecting rod, and a circular mounting plate is provided at one end of the connecting rod away from the rectangular plug-in cylinder. A special-shaped slide groove is provided on the outer wall of the circular mounting plate, and four guide sliders are slidingly provided in the inner cavity of the special-shaped slide groove. A guide rod is movably passed through the four guide sliders, and the two ends of the four guide rods are respectively provided on the inner wall of the workbench.

[0014] As a preferred embodiment of the present invention, both side walls of the four guide sliders are fixedly connected with mounting plates, and push rods are provided above the opposite ends of each mounting plate, and each push rod is movable through the workbench, and each push rod is located at the bottom of the base plate.

[0015] As a preferred embodiment of the present invention, two mutually symmetrical connecting members are provided above each of the bottom plates, and a top plate is provided above the connecting members.

[0016] As a preferred embodiment of the present invention, a method for testing the lateral high-frequency dynamic stiffness of a rail fastener system comprises the following steps:

[0017] Step 1: First, place the rail fastener body on the circular placement plate and fix it. At the same time, place the high-frequency detection component on the workbench so that the high-frequency detection component is above the bottom plate;

[0018] Step 2: The staff activates the hydraulic cylinder to drive the clamping assembly downward, so that the clamping assembly is located above the rail fastener body, thereby performing high-frequency dynamic stiffness testing;

[0019] Step 3: When testing an area of the high-frequency detection component for a certain period of time, the staff moves the hydraulic cylinder back a certain distance and controls the operation of the drive component. When the drive component is running, it can drive the T-shaped placement plate to rotate, thereby driving the clamping component to rotate. During the rotation, the clamping component can be assisted by the special-shaped plate and the moving ball to deflect the trajectory of the T-shaped placement plate;

[0020] Step 4: At the same time, when the driving assembly rotates, it can also drive the annular mounting plate and the circular placement plate to rotate, so that the guide slider can move vertically. At this time, according to step 3, the guide slider first moves vertically upward and then resets. That is, the guide slider drives the push rod to move vertically upward, thereby driving the bottom plate to move vertically upward, and finally drives the high-frequency detection assembly to move vertically upward, thus ensuring that the high-frequency detection assembly will not be worn to a certain extent when the rail fastener body is replaced.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention can drive the T-shaped placing plate to rotate through the operation of the driving component, thereby driving the clamping component to rotate, and at the same time, when the T-shaped placing plate rotates, it can drive the movable ball to move on the special-shaped plate, so that the movable slider sliding at the bottom of the T-shaped placing plate can be moved with the assistance of the rocker arm, thereby changing the position of the clamping assembly; at the same time, when the driving component rotates, it can also drive the circular placing plate to rotate, and when the circular placing plate rotates, it can drive the track fastener body to rotate, thereby changing the position of the track fastener body, and when the track fastener body is changing position, the high-frequency detection component is suspended in the air under the push of the push rod and does not contact the track fastener body, thereby ensuring that the high-frequency detection component will not be worn to a certain extent when the track fastener body is changed, and at the same time, it can also ensure that the same track fastener body can be detected under the detection of different clamping assemblies and high-frequency detection assemblies, thereby making it more accurate when detecting the stiffness of the track fastener body.

[0023] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In the attached figure:

[0025] Figure 1 The figure is a schematic diagram of the three-dimensional structure of a rail fastener system transverse high-frequency dynamic stiffness testing machine;

[0026] Figure 2 This is a schematic diagram of the structure of a rail fastener system transverse high-frequency dynamic stiffness testing machine from a bottom view;

[0027] Figure 3 This is a schematic diagram of the cross-sectional structure of a workbench of a rail fastener system transverse high-frequency dynamic stiffness testing machine;

[0028] Figure 4 This is a schematic diagram of the inner structure of a workbench of a rail fastener system transverse high-frequency dynamic stiffness testing machine;

[0029] Figure 5This is a schematic diagram of the T-shaped placement plate structure of a rail fastener system transverse high-frequency dynamic stiffness testing machine;

[0030] Figure 6 This is a schematic diagram of the T-shaped placement plate structure from above of a rail fastener system transverse high-frequency dynamic stiffness testing machine;

[0031] Figure 7 A rail fastener system lateral high frequency dynamic stiffness testing machine Figure 6 A in the middle is an enlarged structural diagram;

[0032] Figure 8 This is a schematic diagram of the ring mounting plate structure of a rail fastener system transverse high-frequency dynamic stiffness testing machine;

[0033] Figure 9 This is a schematic diagram of the high-frequency detection component structure of a rail fastener system transverse high-frequency dynamic stiffness testing machine;

[0034] Figure 10 This is a schematic diagram of the rocker arm connection structure of a rail fastener system lateral high-frequency dynamic stiffness testing machine.

[0035] In the picture:

[0036] 100, placement unit; 101, workbench; 1011, access door; 102, support rod; 1021, fixing member; 1022, hydraulic cylinder; 103, circular placement plate; 104, track fastener body; 105, high-frequency detection component; 1051, first telescopic rod;

[0037] 200, drive unit; 201, servo motor; 2011, rotating rod; 2012, rectangular plug-in cylinder; 2013, rectangular plug-in rod; 2014, rotating rod; 202, T-shaped placement plate; 2021, movable slide; 2022, movable slider; 2023, swing arm; 2024, positioning rod; 2025, clamping assembly; 203, special-shaped plate; 2031, movable ball bearing; 2032, placement plate; 2033, movable rod; 2034, fixing block; 2035, return spring; 2036, positioning block; 2037, swing arm; 2038, L-shaped mounting plate; 2039, fixing rod; 204, second telescopic rod;

[0038] 300, lifting unit; 301, connecting rod; 302, circular mounting plate; 3021, special-shaped slide; 3022, guide slider; 3023, guide rod; 3024, mounting plate; 3025, push rod; 304, bottom plate; 3041, connecting piece; 3042, top plate. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0040] Example 1:

[0041] like Figures 1 to 10 As shown, a rail fastener system transverse high-frequency dynamic stiffness testing machine includes a placement unit 100, a drive unit 200 and a jacking unit 300. The placement unit 100 includes a workbench 101. A slot is provided above the workbench 101, and a circular placement plate 103 is rotatably provided in the slot cavity. Four rail fastener bodies 104 arranged in a circumferential distribution are placed above the circular placement plate 103. Four circumferentially distributed pressing assemblies 2025 are also provided above the workbench 101. The four pressing assemblies 2025 are respectively located on the rail fastener body 104. The driving unit 200 is used to drive the circular placement plate 103 to rotate, and the rotation of the circular placement plate 103 can also drive the rail fastener body 104 to rotate. The driving unit 200 can also be used to drive the four high-frequency detection components 105 to rotate and move horizontally. The driving unit 200 can also be used to drive the jacking unit 300 to move; the jacking unit 300 includes multiple base plates 304, and a high-frequency detection component 105 is arranged above each base plate 304, and a first telescopic rod 1051 is arranged at the bottom of each high-frequency detection component 105. The operation of the driving assembly can drive the T-shaped placement plate 202 to rotate, thereby driving the clamping assembly 2025 to rotate. At the same time, when the T-shaped placement plate 202 rotates, it can drive the moving ball 2031 to move on the special-shaped plate 203, so that the moving slider 2022 sliding at the bottom of the T-shaped placement plate 202 can move with the assistance of the rocker rod 2037, thereby changing the position of the clamping assembly 2025. At the same time, when the driving assembly rotates, it can also drive the circular placement plate 103 to rotate, and when the circular placement plate 103 rotates, it can drive the track fastener body 104 rotates, thereby changing the position of the track fastener body 104, and when the track fastener body 104 is changing position, the high-frequency detection component 105 is suspended in the air under the push of the push rod 3025 and does not contact the track fastener body 104, thereby ensuring that the high-frequency detection component 105 will not be worn to a certain extent when the track fastener body 104 is changed. At the same time, it can also ensure that the same track fastener body 104 can be detected by different clamping components 2025 and high-frequency detection components 105, thereby making it more accurate when detecting the stiffness of the track fastener body 104.

[0042] like Figures 1 to 5As shown, in a specific embodiment, an access door 1011 is provided on the front side of the workbench 101, and two symmetrical support rods 102 are provided above the workbench 101. Fixing members 1021 are provided on the two support rods 102, and hydraulic cylinders 1022 are provided on the fixing members 1021. The output end of the hydraulic cylinder 1022 movably passes through the fixing members 1021. In this configuration, the installation position of the hydraulic cylinder 1022 is determined.

[0043] like Figures 1 to 7 and Figure 10 As shown, the bottom of the hydraulic cylinder 1022 is provided with four T-shaped placement plates 202 arranged in a circumferential arrangement. Each of the four T-shaped placement plates 202 has a movable chute 2021 formed at the bottom. Each of the four movable chute 2021 has a movable slider 2022 slidably disposed within the inner cavity of each of the four movable sliders 2021. Two mutually symmetrical positioning rods 2024 are fixedly connected to the bottom of each of the four movable sliders 2022. A clamping assembly 2025 is fixedly connected to the bottom between each of the positioning rods 2024. L-shaped mounting plates 2038 are fixedly connected to opposite ends of each of the four movable sliders 2022. A swing arm 2023 is provided between each of the four movable sliders 2022. This arrangement ensures that the hydraulic cylinder 1022 can push and drive the T-shaped placement plates 202 to move vertically downward during operation, thereby driving the clamping assembly 2025 to move vertically downward.

[0044] Example 2:

[0045] The difference between the above embodiment and this embodiment is that: Figures 1 to 8 and Figure 10 As shown, a rail fastener system transverse high-frequency dynamic stiffness tester, wherein the drive assembly includes a servo motor 201, which is arranged at the bottom of the inner cavity of a workbench 101. The output end of the servo motor 201 is fixedly connected to a rotating rod 2011, and a rectangular plug-in cylinder 2012 is fixedly connected above the rotating rod 2011. A rectangular plug-in rod 2013 is movably plugged into the inner cavity of the rectangular plug-in cylinder 2012. A rotating rod 2014 is fixedly connected above the rectangular plug-in rod 2013. The rotating rod 2014 is rotatably arranged at the output end of a hydraulic cylinder 1022 at one end away from the rectangular plug-in rod 2013. In this arrangement, it is ensured that when the servo motor 201 is running, it can drive the rotating rod 2011 to rotate, and when the rotating rod 2011 rotates, it can drive the rectangular plug-in cylinder 2012 to rotate, and when the rectangular plug-in cylinder 2012 rotates, it can drive the rectangular plug-in rod 2013 to rotate, and when the rectangular plug-in rod 2013 rotates, it can drive the rotating rod 2014 to rotate.

[0046] like Figures 1 to 8 and Figure 10As shown, in a specific embodiment, a shaped plate 203 is disposed above the workbench 101. The shaped plate 203 movably extends through a rotating rod 2014. Two symmetrical second telescopic rods 204 are fixedly mounted on the bottom of the shaped plate 203. The other ends of the two second telescopic rods 204 are disposed on the workbench 101. Moving balls 2031 are attached to the sidewalls of the shaped plate 203. This arrangement secures the position of the shaped plate 203 and ensures its ability to move vertically downward.

[0047] like Figures 1 to 8 and Figure 10 As shown, further, a placing plate 2032 is provided on the side of the moving ball 2031 away from the special-shaped plate 203, and a moving rod 2033 is provided on the end of the placing plate 2032 away from the moving ball 2031, and a positioning block 2036 is fixedly connected to the end of the moving rod 2033 away from the placing plate 2032. A fixed block 2034 is also movably passed through the moving rod 2033, and two symmetrical fixed rods 2039 are fixedly connected to the fixed block 2034. The two fixed rods 2039 are interactively passed through the positioning block 2036, and the other ends are fixedly connected to the L-shaped mounting plate 2038. A rocker arm 2037 is movably provided between the L-shaped mounting plate 2038 and the positioning block 2036, and a return spring 2035 is provided on the moving rod 2033, and the two ends of the return spring 2035 are respectively provided on the fixed block 2034 and the placing plate 2032. In this setting, because the special-shaped plate 203 has a concave area and a convex area, when the concave drive is rotated, the movable ball 2031 will be able to move into the concave area, so the movable rod 2033 can be moved horizontally with the assistance of the reset spring 2035. When the movable rod 2033 moves, the L-shaped mounting plate 2038 will be driven to move through the rocker arm 2037, so the L-shaped mounting plate 2038 can drive the movable slider 2022 to move in the movable slide groove 2021.

[0048] like Figures 1 to 8 and Figure 10As shown, further, the side wall of the rectangular plug-in cylinder 2012 is fixedly connected to a connecting rod 301, and a circular mounting plate 302 is provided at one end of the connecting rod 301 away from the rectangular plug-in cylinder 2012. The outer wall of the circular mounting plate 302 is provided with a special-shaped sliding groove 3021, and four guide sliders 3022 are slidingly provided in the inner cavity of the special-shaped sliding groove 3021. The four guide sliders 3022 are respectively movably penetrated by guide rods 3023, and the two ends of the four guide rods 3023 are respectively provided on the inner wall of the workbench 101. In this setting, when the rectangular plug-in cylinder 2012 rotates, the rectangular plug-in cylinder 2012 can drive the connecting rod 301 to rotate. When the connecting rod 301 rotates, it will be able to drive the annular mounting plate 302 and the circular placement plate 103 to rotate, because the outer wall of the annular mounting plate 302 is provided with a special-shaped sliding groove 3021, and the inner cavity of the special-shaped sliding groove 3021 is slidingly provided with a guide slider 3022. At the same time, the guide slider 3022 is limited in the vertical direction by the guide rod 3023, so that the guide slider 3022 can move vertically.

[0049] like Figures 1 to 10 As shown, further, the two side walls of the four guide sliders 3022 are fixedly connected to mounting plates 3024. A push rod 3025 is provided above the opposite ends of each mounting plate 3024. Each push rod 3025 is movable through the workbench 101 and is located at the bottom of the base plate 304. Two mutually symmetrical connecting members 3041 are provided above each base plate 304, and a top plate 3042 is provided above the connecting members 3041. In this configuration, when the guide sliders 3022 move vertically upward, they will be able to drive the push rods 3025 to move vertically upward, thereby driving the base plate 304 to move vertically upward, and finally driving the high-frequency detection assembly 105 to move vertically upward, thereby ensuring that the high-frequency detection assembly 105 will not be worn to a certain extent when the rail fastener body 104 is repositioned.

[0050] Example 3:

[0051] The present invention also discloses a method for testing the lateral high-frequency dynamic stiffness of a rail fastener system, the steps of which are as follows:

[0052] Step 1: First, place the rail fastener body 104 on the circular placement plate 103 and fix it. At the same time, place the high-frequency detection component 105 on the workbench 101 so that the high-frequency detection component 105 is above the bottom plate 304;

[0053] Step 2: The staff activates the hydraulic cylinder 1022 so that the hydraulic cylinder 1022 can drive the clamping assembly 2025 to move downward, so that the clamping assembly 2025 is located above the rail fastener body 104, thereby performing a high-frequency dynamic stiffness test;

[0054] Step 3: When the high-frequency detection component 105 detects an area for a certain period of time, the staff moves the hydraulic cylinder 1022 back a certain distance and controls the operation of the driving component. When the driving component is running, it can drive the T-shaped placement plate 202 to rotate, thereby driving the clamping component 2025 to rotate 90 degrees. When rotating 90 degrees, the clamping component 2025 can be assisted by the special-shaped plate 203 and the moving ball 2031 to deflect the trajectory of the T-shaped placement plate 202;

[0055] Step 4: At the same time, when the driving component rotates, it can also drive the annular mounting plate 302 and the circular placement plate to rotate, so that the guide slider 3022 can move vertically. At this time, according to step 3, the guide slider 3022 first moves vertically upward and then resets, that is, the guide slider 3022 drives the push rod 3025 to move vertically upward, thereby driving the bottom plate 304 to move vertically upward, and finally drives the high-frequency detection component 105 to move vertically upward, thereby ensuring that the high-frequency detection component 105 will not be worn to a certain extent when the rail fastener body 104 is replaced.

[0056] The implementation principle of the rail fastener system transverse high-frequency dynamic stiffness testing machine of the present invention is as follows:

[0057] First, place the rail fastener body 104 on the circular placement plate 103 and fix it. Then, place the high-frequency detection component 105 on the workbench 101 so that the high-frequency detection component 105 is above the bottom plate 304.

[0058] The staff activates the hydraulic cylinder 1022 so that the hydraulic cylinder 1022 can drive the T-shaped placing plate 202 to move vertically downward. When the T-shaped placing plate 202 moves vertically downward, it can drive the moving slide 2021 and the moving slider 2022 to move vertically downward, thereby driving the positioning rod 2024 to move vertically downward, thereby driving the clamping assembly 2025 to move vertically downward, so that the clamping assembly 2025 is located above the rail fastener body 104, thereby performing high-frequency dynamic stiffness testing (when the T-shaped placing plate 202 moves vertically downward, it can drive the rotating rod 2014 to drive the rectangular plug-in rod 2013 to be plugged into the rectangular plug-in cylinder 2012, and at the same time, when the moving slider 2022 moves vertically downward, it can ensure that the special-shaped plate 203 can move vertically downward with the assistance of the second telescopic rod 204);

[0059] When an area of the high-frequency detection component 105 is detected for a certain period of time, the staff moves the hydraulic cylinder 1022 back a distance and controls the operation of the drive component. When the drive component is running, it drives the servo motor 201 to run. When the servo motor 201 is running, it will be able to drive the rotating rod 2011 to rotate. When the rotating rod 2011 rotates, it will be able to drive the rectangular plug-in tube 2012 to rotate. When the rectangular plug-in tube 2012 rotates, it will be able to drive the rectangular plug-in rod 2013 to rotate. When the rectangular plug-in rod 2013 rotates, it will be able to drive the rotating rod 2014 to rotate. When the rotating rod 2014 rotates, it will be able to drive the T-shaped The placement plate 202 rotates 90 degrees, thereby driving the clamping assembly 2025 to rotate 90 degrees. When rotating 90 degrees, the clamping assembly 2025 can be deflected on the trajectory of the T-shaped placement plate 202 with the assistance of the special-shaped plate 203 and the moving ball 2031 (because the special-shaped plate 203 has a concave area and a convex area, and when the concave drive is rotated, the moving ball 2031 can be moved into the concave area, so the moving rod 2033 can be moved horizontally with the assistance of the return spring 2035. When the moving rod 2033 moves, it can drive the L-shaped mounting plate 2038 to move through the rocker 2037, so the L-shaped mounting plate 2038 can drive The movable slider 2022 moves in the movable slide groove 2021, so the movable slider 2022 can drive the positioning rod 2024 to move, and the positioning rod 2024 can drive the clamping assembly 2025 to move, so that the clamping assembly 2025 can be moved to one side of the track fastener body 104, and the working principle of the raised area is opposite to that of the concave area, and the concave area and the raised area are relative, so when moving on the raised area of the body, the clamping assembly 2025 can be moved to the other side of the track fastener body 104), and at this time, when the track fastener 104 rotates 90 degrees, the staff starts the hydraulic cylinder 1022 to move downward, so that the clamping assembly 2025 can be pressed on the track fastener 104. 4 is located on one side of the upper surface (located in the concave area of the special-shaped plate 203), and repeating the above steps, at this time continuing to rotate 90 degrees can make the clamping component 2025 press on the middle of the track fastener 104, and when rotating 90 degrees again, the clamping component 2025 can be located on the other side of the upper surface of the track fastener 104 (located in the convex area of the special-shaped plate 203), thereby pressing down. Therefore, repeating the above steps can ensure that when the track fastener body 104 is transposed, it is possible to test under different clamping components 2025 and clamping components 2025 in different positions (different positions refer to the middle of the upper surface and both sides of the upper surface of the clamping component 2025), so that the rigidity test of the track fastener body 104 is more accurate;

[0060] At the same time, when the rectangular plug-in cylinder 2012 rotates, the rectangular plug-in cylinder 2012 can drive the connecting rod 301 to rotate. When the connecting rod 301 rotates, the annular mounting plate 302 and the circular placement plate 103 can be driven to rotate. Because the outer wall of the annular mounting plate 302 is provided with a special-shaped sliding groove 3021, and the inner cavity of the special-shaped sliding groove 3021 is slidingly provided with a guide slider 3022, and the guide slider 3022 is vertically limited by the guide rod 3023, so that the guide slider 3022 can move vertically (at this time, when the above-mentioned moving slider 2022 rotates and moves horizontally at the same time), and the guide slider 302 2 moves vertically upward first and then resets. When the guide slider 3022 moves vertically upward, it will be able to drive the push rod 3025 to move vertically upward, thereby driving the bottom plate 304 to move vertically upward, and finally driving the high-frequency detection component 105 to move vertically upward. Therefore, it is ensured that the high-frequency detection component 105 will not be worn to a certain extent when the track fastener body 104 is replaced. Moreover, through the replacement of the track fastener body 104, it can be ensured that the same track fastener body 104 can be detected by different clamping components 2025 and high-frequency detection components 105, thereby making it more accurate when detecting the stiffness of the track fastener body 104.

Claims

1. A rail fastener system transverse high-frequency dynamic stiffness testing machine, comprising a placement unit (100), a drive unit (200) and a jacking unit (300), characterized in that: The placement unit (100) comprises a workbench (101), a slot is provided above the workbench (101), and a circular placement plate (103) is rotatably provided in the inner cavity of the slot, four track fastener bodies (104) arranged in a circumferential distribution are placed above the circular placement plate (103), and four pressing assemblies (2025) arranged in a circumferential distribution are also provided above the workbench (101), and the four pressing assemblies (2025) are respectively located above the track fastener bodies (104); The driving unit (200) is used to drive the circular placement plate (103) to rotate, and the rotation of the circular placement plate (103) can also drive the rail fastener body (104) to rotate. The driving unit (200) can also be used to drive the four high-frequency detection components (105) to rotate and move horizontally. The driving unit (200) can also be used to drive the lifting unit (300) to move. The lifting unit (300) comprises a plurality of bottom plates (304), a high-frequency detection component (105) is arranged above each bottom plate (304), and a first telescopic rod (1051) is arranged at the bottom of each high-frequency detection component (105).

2. A rail fastener system transverse high frequency dynamic stiffness testing machine according to claim 1, characterized in that: An inspection door (1011) is provided on the front side of the workbench (101), and two mutually symmetrical support rods (102) are provided above the workbench (101). Fixing members (1021) are provided on the two support rods (102), and a hydraulic cylinder (1022) is provided on the fixing member (1021). The output end of the hydraulic cylinder (1022) movably passes through the fixing member (1021).

3. A rail fastener system transverse high frequency dynamic stiffness testing machine according to claim 2, characterized in that: The bottom of the hydraulic cylinder (1022) is provided with four T-shaped placement plates (202) distributed in a circumferential manner, the bottoms of the four T-shaped placement plates (202) are each provided with a movable slide groove (2021), the inner cavities of the four movable slide grooves (2021) are each slidably provided with a movable slider (2022), the bottoms of the four movable sliders (2022) are each fixedly connected to two mutually symmetrical positioning rods (2024), the bottoms of each of the positioning rods (2024) are fixedly connected to a clamping assembly (2025), the opposite ends of the four movable sliders (2022) are fixedly connected to an L-shaped mounting plate (2038), and the four movable sliders (2022) are each provided with a swing arm (2023) between them.

4. A rail fastener system transverse high frequency dynamic stiffness testing machine according to claim 1, characterized in that: The driving assembly comprises a servo motor (201), the servo motor (201) being arranged at the bottom of the inner cavity of the workbench (101), the output end of the servo motor (201) being fixedly connected to a rotating rod (2011), the upper portion of the rotating rod (2011) being fixedly connected to a rectangular plug-in cylinder (2012), the inner cavity of the rectangular plug-in cylinder (2012) being movably plugged with a rectangular plug-in rod (2013), the upper portion of the rectangular plug-in rod (2013) being fixedly connected to a rotating rod (2014), and the end of the rotating rod (2014) away from the rectangular plug-in rod (2013) being rotatably arranged at the output end of the hydraulic cylinder (1022).

5. A rail fastener system transverse high frequency dynamic stiffness testing machine according to claim 1, characterized in that: A special-shaped plate (203) is provided above the workbench (101), and the special-shaped plate (203) is movable through the rotating rod (2014). Two mutually symmetrical second telescopic rods (204) are fixedly installed at the bottom of the special-shaped plate (203), and the other ends of the two second telescopic rods (204) are provided on the workbench (101). A movable ball (2031) is provided on the side wall of the special-shaped plate (203).

6. A rail fastener system transverse high frequency dynamic stiffness testing machine according to claim 5, characterized in that: Therefore, a placement plate (2032) is provided on the side of the moving ball (2031) away from the special-shaped plate (203), and a moving rod (2033) is provided on one end of the placement plate (2032) away from the moving ball (2031). A positioning block (2036) is fixedly connected to one end of the moving rod (2033) away from the placement plate (2032). A fixed block (2034) is also movably passed through the moving rod (2033), and two mutually opposite fixed blocks are fixedly connected to the fixed block (2034). The two fixing rods (2039) are interactively inserted into the positioning block (2036) and the other ends are fixedly connected to the L-shaped mounting plate (2038). A rocker arm (2037) is movably arranged between the L-shaped mounting plate (2038) and the positioning block (2036). A return spring (2035) is arranged on the movable rod (2033). The two ends of the return spring (2035) are respectively arranged on the fixing block 2034 and the placement plate (2032).

7. A rail fastener system transverse high frequency dynamic stiffness testing machine according to claim 4, characterized in that: The side wall of the rectangular plug-in cylinder (2012) is fixedly connected with a connecting rod (301), and a circular mounting plate (302) is provided at one end of the connecting rod (301) away from the rectangular plug-in cylinder (2012). The outer wall of the circular mounting plate (302) is provided with a special-shaped sliding groove (3021), and four guide sliders (3022) are slidingly provided in the inner cavity of the special-shaped sliding groove (3021). The four guide sliders (3022) are respectively movably penetrated by a guide rod (3023), and the two ends of the four guide rods (3023) are respectively provided on the inner wall of the workbench (101).

8. A rail fastener system transverse high frequency dynamic stiffness testing machine according to claim 7, characterized in that: The two side walls of the four guide sliders (3022) are fixedly connected with mounting plates (3024), and push rods (3025) are provided above the opposite ends of each mounting plate (3024), and each push rod (3025) is movable and passes through the workbench (101), and each push rod (3025) is located at the bottom of the base plate (304).

9. A rail fastener system transverse high frequency dynamic stiffness testing machine according to claim 8, characterized in that: Two mutually symmetrical connecting members (3041) are arranged above each of the bottom plates (304), and a top plate (3042) is arranged above the connecting members (3041).

10. A test method for the lateral high-frequency dynamic stiffness of a rail fastener system, characterized in that: A rail fastener system transverse high-frequency dynamic stiffness testing machine applied to any one of claims 1 to 9, wherein the test method for the rail fastener system transverse high-frequency dynamic stiffness comprises the following steps: Step 1: First, place the rail fastener body (104) on the circular placement plate (103) and fix it, and then place the high-frequency detection component (105) on the workbench (101) so that the high-frequency detection component (105) is located above the bottom plate (304); Step 2: The staff activates the hydraulic cylinder (1022), so that the hydraulic cylinder (1022) can drive the pressing assembly (2025) to move downward, so that the pressing assembly (2025) is located above the rail fastener body (104), thereby performing high-frequency dynamic stiffness testing; Step 3: When an area of the high-frequency detection component (105) is detected for a certain period of time, the staff moves the hydraulic cylinder (1022) back a distance and controls the operation of the driving component. When the driving component is running, it can drive the T-shaped placement plate (202) to rotate, thereby driving the clamping component (2025) to rotate (90) degrees. When rotating (90) degrees, the clamping component (2025) can be deflected on the trajectory of the T-shaped placement plate (202) with the assistance of the special-shaped plate (203) and the moving ball (2031); Step 4: When the driving assembly rotates, it can also drive the annular mounting plate (302) and the circular placement plate to rotate, thereby allowing the guide slider (3022) to move vertically. At this time, according to step 3, the guide slider (3022) first moves vertically upward and then resets, that is, the guide slider (3022) drives the push rod (3025) to move vertically upward, thereby driving the bottom plate (304) to move vertically upward, and finally drives the high-frequency detection assembly (105) to move vertically upward, thereby ensuring that the high-frequency detection assembly (105) will not be worn to a certain extent when the track fastener body (104) is replaced.

Images