Railway embedded channel tensile test equipment

Abstract

The invention relates to the technical field of material testing, and particularly discloses railway pre-buried channel tensile test equipment which comprises a testing machine body, a movable cross beam is slidably connected to the inner wall of the testing machine body, a clamp assembly is fixedly installed on the outer surface of the testing machine body, and a channel test piece is arranged in an inner cavity of the clamp assembly. The test piece can be quickly disassembled and assembled through the clamp assembly, meanwhile, the double-fixing effect is achieved, the stability of the clamp is improved compared with a traditional clamp, the initial inclination of the test piece can be detected during stretching, meanwhile, sliding can be prevented in the stretching process, an alarm can be given out in time when sliding is generated, and the work efficiency is improved. The material performance is accurately judged, the test equipment can have a certain buffering effect through the buffering assembly when the test piece is fractured, the influence of vibration of fracture vibration on the equipment is reduced, and fatigue damage, caused by vibration, of the equipment can be effectively reduced.

Description

Technical Field

[0001] This application relates to the field of materials testing technology, and in particular to a tensile testing device for railway pre-embedded channels. Background Technology

[0002] Railway embedded channels, as a type of pre-embedded fastener used in railways, have a wide range of applications in railway construction. Their exterior is cast in concrete, and after nearly a century of evolution, their applications now encompass commercial structures, civil buildings, prefabrication industries, and infrastructure such as railways, bridges, tunnels, and nuclear power facilities. As a key load-bearing component in rail transit tunnel engineering, the tensile strength of railway embedded channels directly affects the installation stability and operational safety of equipment in railways, bridges, tunnels, and nuclear power facilities. Therefore, the mechanical testing and inspection of railway embedded channels are particularly important.

[0003] The existing technology still has the following problems: 1. Existing tensile testing equipment requires multiple sets of bolts and clamps to fix the railway pre-embedded channel during tensile testing. This is cumbersome and time-consuming. Furthermore, the fixation effect on the railway pre-embedded channel is poor during tensile testing, which can easily cause slippage. Slippage makes it impossible to accurately measure the tensile force actually applied to the pre-embedded channel, resulting in test data that cannot truly reflect the actual performance of the pre-embedded channel and reducing the accuracy of the test data.

[0004] 2. Existing tensile testing equipment does not have a buffer structure. When the channel fractures during tensile testing, the elastic strain energy stored inside will be suddenly released, forming an impact load. This energy release will cause high-frequency vibration at the fracture site, which will cause the railway pre-embedded channel and even the tensile testing equipment to resonate. Long-term vibration will accelerate the fatigue failure of the mechanical parts of the testing machine and shorten the service life of the equipment. Summary of the Invention

[0005] To overcome the shortcomings of existing tensile testing equipment, which requires multiple sets of bolts and clamps to fix the railway pre-embedded channel during tensile testing, resulting in cumbersome assembly and disassembly, wasted testing time, and poor fixation during tensile testing, leading to slippage, inaccurate measurement of the tensile force applied to the channel and thus reducing the accuracy of the test data, and to address the lack of a buffer structure in existing tensile testing equipment, which causes the stored elastic strain energy to be suddenly released when the channel fractures, forming an impact load. This energy release leads to high-frequency vibration at the fracture site, causing resonance in the railway pre-embedded channel and even the tensile testing equipment. Long-term vibration accelerates the fatigue failure of the testing machine's mechanical components and shortens the equipment's service life. The purpose of this invention is to provide a tensile testing device for railway pre-embedded channels to solve the above-mentioned deficiencies.

[0006] This application provides a tensile testing device for railway pre-embedded channels, including a testing machine body, a movable crossbeam slidably connected to the inner wall of the testing machine body, a clamping assembly fixedly installed on the outer surface of the testing machine body, a channel test piece disposed in the inner cavity of the clamping assembly, a buffer assembly disposed below the movable crossbeam, a sensor disposed on the lower surface of the buffer assembly, a tensile sleeve fixedly installed at the bottom end of the sensor, a loading rod sleeved in the inner cavity of the bottom end of the tensile sleeve, the clamping assembly including a limiting frame, a receiving cavity opened on the outer surface of the limiting frame, a fastening mechanism disposed in the inner cavity of the limiting frame, a clamping mechanism disposed in the inner cavity of the limiting frame, and an anti-slip mechanism disposed in the inner cavity of the limiting frame.

[0007] Furthermore, the fastening mechanism includes a cam, a rotating rod is fixedly installed in the inner cavity of the cam, a slip ring is slidably connected to the outer surface of the rotating rod, an insert rod is fixedly installed on the side of the slip ring near the cam, an insertion hole is opened on the outer surface of the limiting frame, the rotating rod and the inner wall of the limiting frame are rotatably connected, the rotating rod is offset from the middle part of the cam, the insert rod and the insertion hole are engaged, and there is a gap between the cam and the inner wall of the limiting frame.

[0008] Furthermore, the clamping mechanism includes a drive block, a slide plate fixedly installed on the inner wall of the limiting frame, the drive block and the slide plate being slidably connected, a first spring fixedly connected to the inner wall of the drive block, the top end of the first spring being in close contact with the top inner wall of the limiting frame, a drive rod fixedly installed on the outer surface of the drive block, a clamping block provided on the outer surface of the drive block, a drive groove opened on the outer surface of the clamping block, the drive rod and the drive groove being slidably connected, the drive groove being inclined, there are two drive rods, and both drive rods are located in the inner cavity of the drive groove, the bottom end of the drive block is in close contact with the cam, the outer surface of the clamping block is in close contact with the groove test piece, and the clamping block and the limiting frame are slidably connected.

[0009] Furthermore, the anti-slip mechanism includes an adjustment mechanism, an inner cavity of which is equipped with a detection mechanism, a second spring is sleeved on the outer surface of the detection mechanism, an alarm mechanism is provided on the outer surface of the detection mechanism, and the detection mechanism and the limit frame are slidably connected.

[0010] Furthermore, the adjustment mechanism includes a first fixed block, which is fixedly connected to the outer surface of the limiting frame. A threaded rod is rotatably connected to the inner cavity of the first fixed block. A movable disk is threadedly connected to the outer surface of the threaded rod. A first slide rod is fixedly installed on the outer surface of the movable disk. An adjustment ring is fixedly installed at the end of the first slide rod away from the movable disk. The first slide rod is slidably connected to the inner cavity of the limiting frame.

[0011] Furthermore, the testing mechanism includes a testing block, a first slide block slidably connected to the inner cavity of the testing block, a rolling ring rotatably connected to one end of the first slide block, a third spring sleeved at the end of the first slide block away from the rolling ring, and the end of the third spring away from the first slide block contacting the inner wall of the testing block. A balance block rotatably connects to the inner cavity of the testing block, the balance blocks are symmetrically distributed about the rolling ring, and the balance blocks and the rolling ring are tightly fitted. An anti-slip block is fixedly installed on the outer surface of the balance block. A first button is provided on the outer surface of the testing block, and a flashing light is fixedly installed on the outer surface of the testing block. The first button and the flashing light are electrically connected, and pressing the first button controls the flashing light to flash. A pointer is fixedly installed on the outer surface of the balance block. There are two first buttons, symmetrically distributed about the pointer. The anti-slip block is tightly fitted to the inner wall of the channel test piece. A second spring is sleeved on the testing block. The testing block and the limiting frame are slidably connected. An adjusting ring is located in the inner cavity of the limiting frame. The second spring is located between the adjusting ring and the testing block, and the adjusting ring and the testing block are slidably connected.

[0012] Furthermore, the alarm mechanism includes a floating block, a fourth spring fixedly connected to the inner cavity of the floating block, a pressure block slidably connected to the inner cavity of the floating block, the fourth spring located between the pressure block and the inner wall of the floating block, second slide rods fixedly installed at both ends of the floating block, a fifth spring sleeved on the outer surface of the second slide rods, second fixing blocks fixedly installed at both ends of the anti-slip block, a second button provided on the outer surface of the second fixing block, an alarm fixedly installed on the outer surface of the second fixing block, the inner cavities of the floating block and the anti-slip block slidably connected, the second slide rods and the anti-slip block slidably connected, the fifth spring located between the inner wall of the anti-slip block and the floating block, the second slide rods and the second button aligned, the second button and the alarm electrically connected, and pressing the second button controls the alarm to sound an alarm, with the pressure block protruding from the outer surface of the anti-slip block.

[0013] Furthermore, the buffer assembly includes a connecting plate, and the inner cavity of the connecting plate and the movable crossbeam are slidably connected. A first buffer mechanism is provided in the middle part of the connecting plate, and a second buffer mechanism is fixedly installed on the inner wall of the top of the movable crossbeam. The second buffer mechanism is located on both sides of the upper surface of the connecting plate.

[0014] Furthermore, the first buffer mechanism includes a connecting plate, the upper surface of which is fixedly connected to a connecting plate, and the lower end of which is fixedly connected to a sensor. A third slide rod is fixedly installed on the outer surface of the connecting plate, a sixth spring is sleeved on the outer surface of the third slide rod, and a gasket is slidably connected to the outer surface of the third slide rod. A fixing ring is fixedly installed on the lower surface of the connecting plate, and a buffer groove is formed on the outer surface of the fixing ring. The third slide rod and the buffer groove are slidably connected. The sixth spring is located between the connecting plate and the gasket, and the gasket is slidably connected to the inner wall of the fixing ring.

[0015] Furthermore, the second buffer mechanism includes a buffer frame, a second slide block slidably connected to the inner cavity of the buffer frame, a connecting bar rotatably connected to the outer surface of the second slide block, a seventh spring fixedly connected to the outer surface of the second slide block, the seventh spring being located between the inner wall of the buffer frame and the second slide block, a connecting rod rotatably connected to the end of the connecting bar away from the second slide block, a sliding sleeve provided in the inner cavity of the connecting rod, the connecting rod and the sliding sleeve slidably connected, the sliding sleeve and the inner wall of the buffer frame fixedly connected, the buffer frame and the inner wall of the movable crossbeam fixedly connected, and the connecting plate and the sliding sleeve slidably connected.

[0016] The technical solution provided in this application has at least the following technical effects or advantages: 1. By adopting a clamp assembly, this invention effectively solves the problem of existing tensile testing equipment requiring multiple sets of bolts to fix the railway pre-embedded channel during tensile testing. This is cumbersome to assemble and disassemble, wastes testing time, and the fixing effect on the railway pre-embedded channel during tensile testing is poor, easily causing slippage. Slippage leads to inaccurate measurement of the tensile force actually applied to the pre-embedded channel, making the test data unable to truly reflect the actual performance of the pre-embedded channel and reducing the accuracy of the test data. This invention, through the clamp assembly, allows for quick assembly and disassembly of the test piece, while providing a dual fixing effect, improving stability compared to traditional clamps. It can detect the initial tilt of the test piece during tensile testing, prevent slippage during the tensile process, and issue an alarm in time when slippage occurs. This improves the accuracy of key data such as tensile strength and elongation at break, thereby enabling a more accurate judgment of material properties.

[0017] 2. By employing a buffer component, this invention effectively solves the problem that existing tensile testing equipment lacks a buffer structure. When the track fractures during tensile testing, the elastic strain energy stored inside is suddenly released, forming an impact load. This energy release causes high-frequency vibration at the fracture site, which in turn causes resonance in the railway pre-embedded track and even the tensile testing equipment. Long-term vibration accelerates the fatigue failure of the testing machine's mechanical components and shortens the equipment's service life. This invention, through its buffer component, provides a certain buffering effect when the test piece fractures, reducing the impact of fracture vibration on the equipment. This effectively reduces fatigue damage caused by vibration, thereby extending the equipment's service life and reducing maintenance costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure in the embodiments of this application; Figure 2 This is a schematic cross-sectional view of the clamp assembly structure in the embodiments of this application; Figure 3 This is a schematic cross-sectional view of the limiting frame structure in the embodiments of this application; Figure 4 This is a schematic diagram of the fastening mechanism structure in the embodiments of this application; Figure 5 This is a schematic diagram of the anti-slip mechanism structure in the embodiments of this application; Figure 6 This is a schematic diagram of the adjustment mechanism structure in the embodiments of this application; Figure 7 This is a schematic diagram of the detection block structure in an embodiment of this application; Figure 8 This is a schematic cross-sectional view of the floating block structure in an embodiment of this application; Figure 9 This is a schematic diagram of the connecting plate structure in an embodiment of this application; Figure 10 This is a schematic cross-sectional view of the movable beam structure in the embodiments of this application; Figure 11 This is a schematic diagram of the first buffer mechanism structure in an embodiment of this application; Figure 12 This is a schematic diagram of the second buffer mechanism in an embodiment of this application.

[0019] In the diagram: 1. Main body of the testing machine; 2. Moving crossbeam; 3. Fixture assembly; 31. Limiting frame; 32. Storage cavity; 33. Fastening mechanism; 331. Cam; 332. Rotating rod; 333. Slip ring; 334. Insert rod; 34. Clamping mechanism; 341. Drive block; 342. Slide plate; 343. First spring; 344. Drive rod; 345. Clamping block; 346. Drive groove; 35. Anti-slip mechanism; 351. Adjustment mechanism; 3511. First fixing block; 3512. Threaded rod; 3513. Moving disk; 3514. First slide rod; 3515. Adjusting ring; 352. Second spring; 353. Detection mechanism; 3531. Detection block; 3532. First slide block; 3533. Rolling ring; 3534. Third spring; 3535. Balance block; 3536. Anti-slip block; 3 537. First button; 3538. Flashing light; 3539. Pointer; 354. Alarm mechanism; 3541. Floating block; 3542. Fourth spring; 3543. Pressure block; 3544. Second slide bar; 3545. Fifth spring; 3546. Second fixing block; 3547. Second button; 3548. Alarm; 4. Channel test piece; 5. Buffer assembly; 51. Connecting plate; 52. First buffer mechanism; 521. Connecting plate; 522. Third slide bar; 523. Sixth spring; 524. Gasket; 525. Fixing ring; 526. Buffer groove; 53. Second buffer mechanism; 531. Buffer frame; 532. Second slide block; 533. Connecting bar; 534. Seventh spring; 535. Connecting rod; 536. Sliding sleeve; 6. Sensor; 7. Tension sleeve; 8. Loading rod. Detailed Implementation

[0020] To address the slippage phenomenon that occurs during the tensile testing of railway pre-embedded channels, this invention utilizes a clamping assembly that allows for rapid assembly and disassembly of the test piece, while also providing a dual fixing effect. This enhances stability compared to traditional clamps, enabling the detection of the initial tilt of the test piece during tensile testing and preventing slippage. Furthermore, it provides timely alarms in the event of slippage. For high-frequency vibrations generated at the fracture points of the channel, which can cause resonance in the railway pre-embedded channel and even the tensile testing equipment, this invention employs a buffering assembly that provides a buffering effect when the test piece fractures, reducing the impact of fracture vibrations on the equipment.

[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0022] Please see Figure 1As shown, a tensile testing device for railway pre-embedded channels includes a testing machine body 1. A movable crossbeam 2 is slidably connected to the inner wall of the testing machine body 1. A servo motor and ball screw are installed inside the testing machine body 1. The movable crossbeam 2 is driven by the servo motor and ball screw to move up and down reciprocally within the testing machine body 1, thereby performing a tensile test. A clamp assembly 3 is fixedly installed on the outer surface of the testing machine body 1. A channel test piece 4 is installed in the inner cavity of the clamp assembly 3. A buffer assembly 5 is installed below the movable crossbeam 2. A sensor 6 is installed on the lower surface of the buffer assembly 5. A tensile sleeve 7 is fixedly installed at the bottom end of the sensor 6. A loading rod 8 is fitted into the inner cavity of the bottom end of the extension sleeve 7. One end of the loading rod 8 is fixed to the extension sleeve 7 with bolts, and the other end is fixed to the channel test piece 4 with bolts. This is used to perform tensile testing on the channel test piece 4. The extension sleeve 7 is moved by the sliding of the moving crossbeam 2 on the main body 1 of the testing machine. In fact, the two ends of the channel test piece 4 are fixed between the clamp assembly 3 and the loading rod 8 to stretch the channel test piece 4. The clamp assembly 3 is used to limit the channel test piece 4, which can be quickly disassembled and assembled, and can prevent the channel test piece 4 from sliding. The sensor 6 is used to collect tensile pressure data, and the buffer assembly 5 is used to buffer the impact on the equipment when the channel test piece 4 breaks.

[0023] Please see Figure 2 and Figure 3 As shown, the clamping assembly 3 includes a limiting frame 31, with a storage cavity 32 on the outer surface of the limiting frame 31. A fastening mechanism 33 is provided in the inner cavity of the limiting frame 31, a clamping mechanism 34 is provided in the inner cavity of the limiting frame 31, and an anti-slip mechanism 35 is provided in the inner cavity of the limiting frame 31. One end of the channel test piece 4 is placed in the inner cavity of the storage cavity 32. By controlling the fastening mechanism 33 to drive the clamping mechanism 34 to fix the channel test piece 4, and by using the anti-slip mechanism 35 to limit the channel test piece 4, stability is increased and the channel test piece 4 is prevented from sliding when stretched. At the same time, an alarm can be issued in time when the channel test piece 4 shakes, reminding the staff to perform timely maintenance.

[0024] Please see Figure 3 and Figure 4As shown, the fastening mechanism 33 includes a cam 331. A rotating rod 332 is fixedly installed in the inner cavity of the cam 331. A slip ring 333 is slidably connected to the outer surface of the rotating rod 332. An insert rod 334 is fixedly installed on the side of the slip ring 333 near the cam 331. An insertion hole is opened on the outer surface of the limiting frame 31. The rotating rod 332 is rotatably connected to the inner wall of the limiting frame 31. The rotating rod 332 is offset from the middle part of the cam 331, so that the cam 331 can exert different degrees of pressure on the driving block 341 when the rotating rod 332 rotates, enabling the driving block 341 to slide on the slide plate 342. The insert rod 334 is inserted into the insertion hole. There is a gap between the cam 331 and the inner wall of the limiting frame 31. The clamping mechanism 34 includes a drive block 341, a slide plate 342 fixedly mounted on the inner wall of the limiting frame 31, the drive block 341 and the slide plate 342 being slidably connected, a first spring 343 fixedly connected to the inner wall of the drive block 341, the top end of the first spring 343 being in close contact with the top inner wall of the limiting frame 31, a drive rod 344 fixedly mounted on the outer surface of the drive block 341, a clamping block 345 provided on the outer surface of the drive block 341, a drive groove 346 formed on the outer surface of the clamping block 345, the drive rod 344 and the drive groove 346 being slidably connected, the drive groove 346 being inclined, and there are two drive rods 344, both of which are located in the drive groove 346. The bottom end of the drive block 341 is in close contact with the cam 331 in the inner cavity, and the outer surface of the clamping block 345 is in close contact with the channel test piece 4. The clamping block 345 and the limiting frame 31 are slidably connected. One end of the channel test piece 4 is placed in the inner cavity of the receiving cavity 32. At this time, the sliding ring 333 disengages the insertion rod 334 from the insertion hole. Then, rotating the rotating rod 332 drives the cam 331 to rotate, causing the cam 331 to press against the drive block 341. The drive block 341 moves upward on the outer surface of the slide plate 342. At this time, the first spring 343 is stored in the inner cavity of the drive block 341. The movement of the drive block 341 drives the drive rod 344 to move, and the movement of the drive rod 344 drives the drive... The rod 344 slides in the inner cavity of the drive groove 346 on the clamping block 345. The drive rod 344 exerts a squeezing force on the clamping block 345, thereby causing the clamping block 345 to squeeze the outer surface of the channel test piece 4. When it reaches the appropriate position, the sliding ring 333 makes the insertion rod 334 and the insertion hole engage to fix the cam 331. Even if the clamping block 345 exerts a clamping force on the channel test piece 4, when it is necessary to remove the channel test piece 4, the sliding ring 333 makes the insertion rod 334 and the insertion hole disengage. At this time, the elastic force of the first spring 343 will press the drive block 341 downward, and the clamping block 345 will lose the squeezing force on the channel test piece 4, which makes it easier to quickly remove the channel test piece 4 and save time.

[0025] Please see Figure 5 , Figure 6 and Figure 7As shown, the anti-slip mechanism 35 includes an adjustment mechanism 351. A detection mechanism 353 is provided within the inner cavity of the adjustment mechanism 351. A second spring 352 is sleeved on the outer surface of the detection mechanism 353. An alarm mechanism 354 is provided on the outer surface of the detection mechanism 353. The detection mechanism 353 and the limiting frame 31 are slidably connected. The adjustment mechanism 351 includes a first fixing block 3511, which is fixedly connected to the outer surface of the limiting frame 31. A threaded rod 3512 is rotatably connected to the inner cavity of the first fixing block 3511. A movable disk 3513 is threadedly connected to the outer surface of the threaded rod 3512. A first sliding rod 3514 is fixedly installed on the outer surface of the movable disk 3513. One end of the first sliding rod 3514 away from the movable disk 3513 is fixedly installed... The device includes an adjusting ring 3515, a first sliding rod 3514, and a limiting frame 31 with slidable connection. The detection mechanism 353 includes a detection block 3531. A first sliding seat 3532 is slidably connected to the inner cavity of the detection block 3531. A rolling ring 3533 is rotatably connected to one end of the first sliding seat 3532. A third spring 3534 is sleeved on the end of the first sliding seat 3532 away from the rolling ring 3533. The end of the third spring 3534 away from the first sliding seat 3532 contacts the inner wall of the detection block 3531. A balance block 3535 is rotatably connected to the inner cavity of the detection block 3531. The balance blocks 3535 are symmetrically distributed about the rolling ring 3533, and the balance blocks 3535 and the rolling ring 3533 are tightly fitted. A [missing information - likely a device or component] is fixedly mounted on the outer surface of the balance block 3535. The anti-slip block 3536 and the outer surface of the detection block 3531 are provided with a first button 3537. A flashing light 3538 is fixedly installed on the outer surface of the detection block 3531. The first button 3537 and the flashing light 3538 are electrically connected, and pressing the first button 3537 controls the flashing light 3538 to flash. A pointer 3539 is fixedly installed on the outer surface of the balance block 3535. There are two first buttons 3537, which are symmetrically distributed about the pointer 3539. The anti-slip block 3536 and the inner wall of the channel test piece 4 are tightly fitted. The second spring 352 is sleeved with the detection block 3531. The detection block 3531 and the limit frame 31 are slidably connected. The adjusting ring 3515 is located in the inner cavity of the limit frame 31. The second spring 352 is located in the adjusting ring 3536. Between 515 and the detection block 3531, the adjusting ring 3515 and the detection block 3531 are slidably connected. The detection mechanism 353 is used to fix the channel test piece 4 in conjunction with the clamping mechanism 34. At the same time, the detection mechanism 353 can detect whether the channel test piece 4 is vertical. The adjusting mechanism 351 is used to adjust the tension of the second spring 352, thereby changing the clamping force of the detection mechanism 353 on the channel test piece 4. The alarm mechanism 354 is used to detect whether the channel test piece 4 slips during the stretching process, thereby reducing the accuracy of the test data. When the clamping force of the detection mechanism 353 on the channel test piece 4 is increased, the moving disk 3513 moves on the threaded rod 3512 in the inner cavity of the first fixing block 3511 by rotating the threaded rod 3512.The movement of the movable disk 3513 causes the first slide rod 3514 to slide within the cavity of the limiting frame 31. The movement of the first slide rod 3514 causes the adjusting ring 3515 to slide on the detection block 3531, generating a compressive force on the second spring 352. This causes the detection block 3531 to slide on the limiting frame 31, increasing the clamping force of the anti-sliding block 3536 on the inner wall of the channel test piece 4. The clamping block 345 and the inner wall of the limiting frame 31 clamp and fix the channel test piece 4. The anti-sliding block 3536 clamps and fixes the channel test piece 4. The inner wall is secondary fixed, increasing the stability of the channel test piece 4 on the limit frame 31. The pressure on the second spring 352 can be reduced by rotating the threaded rod 3512, making it easier to remove the clamping force of the anti-slip block 3536 on the channel test piece 4 by pulling the detection block 3531. This facilitates quick assembly and disassembly of the channel test piece 4 in conjunction with the clamping mechanism 34. The detection mechanism 353 can be used to detect whether the channel test piece 4 is tilted. If the channel test piece 4 tilts without being stretched, it is prone to tension error. To reduce the accuracy of test data, when the channel test piece 4 tilts, it exerts tilting pressure on the anti-sliding block 3536. At this time, the tilting of the anti-sliding block 3536 causes the balance block 3535 to deflect, and the rolling ring 3533 is compressed and contracted by the balance block 3535. This causes the first slide block 3532 to slide within the detection block 3531, and the third spring 3534 is compressed and contracted by the first slide block 3532. Simultaneously, the rotation of the balance block 3535 causes the pointer 3539 to rotate, thus pressing the first button 3537. The pressing of the first button 3537 causes the flashing light 3538 to flash, indicating that the channel test piece 4 has an overall tilt angle. The alarm mechanism 354 is used to detect whether the channel test piece 4 has already tilted during tensioning, or to detect tilting while maintaining stability during fixing. This ensures that the channel test piece 4 is subjected to uniform force during tensioning and that it is subjected to axial tension, thereby improving the accuracy and reliability of the test data.

[0026] Please see Figure 6 , Figure 7 and Figure 8As shown, the alarm mechanism 354 includes a floating block 3541, a fourth spring 3542 fixedly connected to the inner cavity of the floating block 3541, a pressure block 3543 slidably connected to the inner cavity of the floating block 3541, the fourth spring 3542 being located between the pressure block 3543 and the inner wall of the floating block 3541, second slide rods 3544 fixedly installed at both ends of the floating block 3541, a fifth spring 3545 sleeved on the outer surface of the second slide rods 3544, second fixing blocks 3546 fixedly installed at both ends of the anti-slip block 3536, a second button 3547 provided on the outer surface of the second fixing block 3546, and an alarm fixedly installed on the outer surface of the second fixing block 3546. 3548, the inner cavity of the floating block 3541 and the anti-slip block 3536 is slidably connected, the second slide rod 3544 and the anti-slip block 3536 are slidably connected, the fifth spring 3545 is located between the inner wall of the anti-slip block 3536 and the floating block 3541, the second slide rod 3544 and the second button 3547 are aligned, the second button 3547 is electrically connected to the alarm 3548, and pressing the second button 3547 controls the alarm 3548 to sound an alarm, the pressure block 3543 protrudes from the outer surface of the anti-slip block 3536, during the process of the anti-slip block 3536 fixing the channel test piece 4, the pressure block 3543 will first contact the channel test piece 4, and then the fourth spring 3545 will be in contact with the channel test piece 4. The elastic force of 542 provides a certain compressive force. The outer surface of the pressure block 3543 is uneven to increase the friction between the pressure block 3543 and the channel test piece 4. When the channel test piece 4 slides during the stretching process, the sliding of the channel test piece 4 causes the pressure block 3543 to move. The movement of the pressure block 3543 causes the floating block 3541 to slide within the inner cavity of the anti-slip block 3536. At this time, the fifth spring 3545 is compressed and the second slide rod 3544 slides within the inner cavity of the anti-slip block 3536. The sliding of the floating block 3541 causes the second slide rod 3544 to compress the second button 3547, thereby triggering the alarm 3548. During the stretching process, the personnel are alerted that the channel test piece 4 may slip. Slippage of the channel test piece 4 will lead to test failure and seriously affect the test efficiency. More importantly, slippage will cause the measured tensile strength, elongation at break and other key data to deviate from the true value, thus affecting the accurate judgment of material properties. Therefore, preventing the test piece from slipping through the alarm mechanism 354 is the premise and foundation for ensuring the accuracy of test results. The floating block 3541 is flexibly fixed in the inner cavity of the anti-slip block 3536. It can not only increase the clamping force on the channel test piece 4, but also move with the channel test piece 4 when it slips, so as to facilitate timely detection of problems and maintenance.

[0027] Please see Figure 9 and Figure 10As shown, the buffer assembly 5 includes a connecting plate 51, which is slidably connected to the inner cavity of the moving crossbeam 2. A first buffer mechanism 52 is provided in the middle part of the connecting plate 51, and a second buffer mechanism 53 is fixedly installed on the inner wall of the top of the moving crossbeam 2. The second buffer mechanism 53 is located on both sides of the upper surface of the connecting plate 51. The first buffer mechanism 52 is used to buffer horizontal vibration, and the second buffer mechanism 53 is used to buffer vertical vibration, so that the swaying amplitude of the connecting plate 51 on the moving crossbeam 2 is reduced, thereby reducing the wear of the equipment and improving the service life of the equipment when the test piece 4 of the channel breaks.

[0028] Please see Figure 8 and Figure 9As shown, the first buffer mechanism 52 includes a connecting plate 521. The upper surface of the connecting plate 521 is fixedly connected to the connecting plate 51, and the lower end is fixedly connected to the sensor 6. A third slide rod 522 is fixedly installed on the outer surface of the connecting plate 521. A sixth spring 523 is sleeved on the outer surface of the third slide rod 522. A washer 524 is slidably connected to the outer surface of the third slide rod 522. A fixing ring 525 is fixedly installed on the lower surface of the connecting plate 51. The washer 524 is used to prevent the sixth spring 523 from rubbing against the inner wall of the fixing ring 525. A buffer groove 526 is formed on the outer surface of the fixing ring 525. The third slide rod 522 is slidably connected to the buffer groove 526. The sixth spring 523... 3. Located between the connecting plate 521 and the gasket 524, the gasket 524 and the inner wall of the fixing ring 525 are slidably connected. The second buffer mechanism 53 includes a buffer frame 531, a second slide block 532 slidably connected to the inner cavity of the buffer frame 531, a connecting strip 533 rotatably connected to the outer surface of the second slide block 532, and a seventh spring 534 fixedly connected to the outer surface of the second slide block 532. The seventh spring 534 is located between the inner wall of the buffer frame 531 and the second slide block 532. A connecting rod 535 is rotatably connected to the end of the connecting strip 533 away from the second slide block 532. A sliding sleeve 536 is provided in the inner cavity of the connecting rod 535, and the connecting rod 535 and the sliding sleeve 536 are slidably connected. The sliding sleeve 536 is fixedly connected to the inner wall of the buffer frame 531, the buffer frame 531 is fixedly connected to the inner wall of the moving crossbeam 2, the connecting plate 51 is slidably connected to the sliding sleeve 536, and the moving crossbeam 2 and the tension sleeve 7 are flexibly connected through the buffer assembly 5. When the groove test piece 4 breaks and vibrates, it drives the connecting plate 521 to vibrate. The vibration of the connecting plate 521 drives the third sliding rod 522 to slide in the inner cavity of the buffer groove 526 opened on the outer surface of the fixed ring 525. At this time, the elastic force of the sixth spring 523 reduces the vibration amplitude of the connecting plate 521. At the same time, when the vibration of the connecting plate 51 compresses the connecting rod 535, the connecting rod 535 slides on the sliding sleeve 536 and drives the connecting bar 533. The rotation of the connecting bar 533 causes the second slide block 532 to slide within the inner cavity of the buffer frame 531, which in turn compresses the seventh spring 534. The elastic force of the seventh spring 534 causes the connecting rod 535 to quickly return to its original position. This, in conjunction with the first buffer mechanism 52, reduces the vibration amplitude generated when the channel test piece 4 breaks, reduces equipment wear, and improves the overall service life of the equipment. Reducing vibration can also reduce noise pollution. Vibration is accompanied by noise, which affects the working environment and personnel health. Vibration dampers can effectively reduce the vibration amplitude of the equipment, thereby significantly reducing noise levels, improving the working environment, and protecting the hearing health of personnel.

[0029] In summary, by sliding the moving crossbeam 2 on the main body 1 of the testing machine, the tension sleeve 7 is moved, effectively fixing both ends of the channel test piece 4 between the clamp assembly 3 and the loading rod 8 to stretch the channel test piece 4. The clamp assembly 3 is used to limit the channel test piece 4, enabling quick assembly and disassembly and preventing the channel test piece 4 from sliding. The sensor 6 is used to collect tensile pressure data. The buffer assembly 5 is used to buffer the impact on the equipment when the channel test piece 4 breaks. The clamping mechanism 34 is fixed by controlling the fastening mechanism 33, and the anti-slip mechanism 35 limits the channel test piece 4, increasing stability and preventing the channel test piece 4 from sliding during stretching. At the same time, an alarm can be issued in time when the channel test piece 4 shakes, reminding the staff to perform timely maintenance. The first buffer mechanism 52 is used to buffer horizontal vibration, and the second buffer mechanism 53 is used to buffer vertical vibration, reducing the shaking amplitude of the connecting plate 51 on the moving crossbeam 2. This reduces the wear of the equipment and increases the service life of the equipment when the channel test piece 4 breaks.

[0030] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0031] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A tensile testing device for railway pre-embedded channels, comprising a testing machine body (1), characterized in that, The inner wall of the main body (1) of the testing machine is slidably connected to a moving crossbeam (2), and a clamp assembly (3) is fixedly installed on the outer surface of the main body (1). A groove test piece (4) is provided in the inner cavity of the clamp assembly (3). A buffer assembly (5) is provided below the moving crossbeam (2). A sensor (6) is provided on the lower surface of the buffer assembly (5). A tension sleeve (7) is fixedly installed at the bottom end of the sensor (6). A loading rod (8) is sleeved in the inner cavity at the bottom end of the tension sleeve (7). The clamp assembly (3) includes a limiting frame (31), the outer surface of the limiting frame (31) is provided with a storage cavity (32), the inner cavity of the limiting frame (31) is provided with a fastening mechanism (33), the inner cavity of the limiting frame (31) is provided with a clamping mechanism (34), and the inner cavity of the limiting frame (31) is provided with an anti-slip mechanism (35).

2. The railway pre-embedded channel tensile testing equipment as described in claim 1, characterized in that, The fastening mechanism (33) includes a cam (331), a rotating rod (332) is fixedly installed in the inner cavity of the cam (331), a slip ring (333) is slidably connected to the outer surface of the rotating rod (332), a plug rod (334) is fixedly installed on the side of the slip ring (333) near the cam (331), a plug hole is opened on the outer surface of the limiting frame (31), the rotating rod (332) and the inner wall of the limiting frame (31) are rotatably connected, the rotating rod (332) is offset from the middle part of the cam (331), the plug rod (334) is inserted into the plug hole, and there is a gap between the cam (331) and the inner wall of the limiting frame (31).

3. The railway pre-embedded channel tensile testing equipment as described in claim 2, characterized in that, The clamping mechanism (34) includes a drive block (341), a slide plate (342) is fixedly installed on the inner wall of the limiting frame (31), the drive block (341) and the slide plate (342) are slidably connected, a first spring (343) is fixedly connected to the inner wall of the drive block (341), the top end of the first spring (343) is in close contact with the top inner wall of the limiting frame (31), a drive rod (344) is fixedly installed on the outer surface of the drive block (341), and a clamping block (344) is provided on the outer surface of the drive block (341). 5) The outer surface of the clamping block (345) is provided with a drive groove (346), the drive rod (344) and the drive groove (346) are slidably connected, the drive groove (346) is inclined, there are two drive rods (344), and both drive rods (344) are located in the inner cavity of the drive groove (346), the bottom end of the drive block (341) is in close contact with the cam (331), the outer surface of the clamping block (345) is in close contact with the channel test piece (4), and the clamping block (345) and the limit frame (31) are slidably connected.

4. The railway pre-embedded channel tensile testing equipment as described in claim 1, characterized in that, The anti-slip mechanism (35) includes an adjustment mechanism (351), the inner cavity of the adjustment mechanism (351) is provided with a detection mechanism (353), the outer surface of the detection mechanism (353) is sleeved with a second spring (352), the outer surface of the detection mechanism (353) is provided with an alarm mechanism (354), and the detection mechanism (353) and the limit frame (31) are slidably connected.

5. The railway pre-embedded channel tensile testing equipment as described in claim 4, characterized in that, The adjustment mechanism (351) includes a first fixed block (3511), which is fixedly connected to the outer surface of the limiting frame (31). A threaded rod (3512) is rotatably connected to the inner cavity of the first fixed block (3511). A movable disk (3513) is threadedly connected to the outer surface of the threaded rod (3512). A first slide rod (3514) is fixedly installed on the outer surface of the movable disk (3513). An adjustment ring (3515) is fixedly installed at the end of the first slide rod (3514) away from the movable disk (3513). The first slide rod (3514) is slidably connected to the inner cavity of the limiting frame (31).

6. The railway pre-embedded channel tensile testing equipment as described in claim 5, characterized in that, The detection mechanism (353) includes a detection block (3531). A first slide block (3532) is slidably connected to the inner cavity of the detection block (3531). A rolling ring (3533) is rotatably connected to one end of the first slide block (3532). A third spring (3534) is sleeved on the end of the first slide block (3532) away from the rolling ring (3533). The end of the third spring (3534) away from the first slide block (3532) contacts the inner wall of the detection block (3531). A balance block (3535) is rotatably connected to the inner cavity of the detection block (3531). The balance block (3535) is symmetrically distributed about the rolling ring (3533), and the balance block (3535) and the rolling ring (3533) are tightly fitted. An anti-slip block (3536) is fixedly installed on the outer surface of the balance block (3535). A first button (3537) is provided on the outer surface of the detection block (3531). A flashing light (3538) is fixedly installed on the outer surface of (3531). The first button (3537) and the flashing light (3538) are electrically connected, and pressing the first button (3537) controls the flashing light (3538) to flash. A pointer (3539) is fixedly installed on the outer surface of the balance block (3535). There are two first buttons (3537), which are symmetrically distributed about the pointer (3539). The anti-slip... The inner walls of the block (3536) and the channel test piece (4) are tightly fitted together. The second spring (352) and the detection block (3531) are sleeved together. The detection block (3531) and the limit frame (31) are slidably connected. The adjusting ring (3515) is located in the inner cavity of the limit frame (31). The second spring (352) is located between the adjusting ring (3515) and the detection block (3531). The adjusting ring (3515) and the detection block (3531) are slidably connected.

7. The railway pre-embedded channel tensile testing equipment as described in claim 6, characterized in that, The alarm mechanism (354) includes a floating block (3541), a fourth spring (3542) fixedly connected to the inner cavity of the floating block (3541), a pressure block (3543) slidably connected to the inner cavity of the floating block (3541), the fourth spring (3542) being located between the pressure block (3543) and the inner wall of the floating block (3541), a second slide rod (3544) fixedly installed at both ends of the floating block (3541), a fifth spring (3545) sleeved on the outer surface of the second slide rod (3544), a second fixing block (3546) fixedly installed at both ends of the anti-slip block (3536), and a second button (354) provided on the outer surface of the second fixing block (3546). 7) An alarm (3548) is fixedly installed on the outer surface of the second fixed block (3546). The inner cavity of the floating block (3541) and the anti-slip block (3536) are slidably connected. The second slide rod (3544) and the anti-slip block (3536) are slidably connected. The fifth spring (3545) is located between the inner wall of the anti-slip block (3536) and the floating block (3541). The second slide rod (3544) and the second button (3547) are aligned. The second button (3547) and the alarm (3548) are electrically connected. Pressing the second button (3547) controls the alarm (3548) to sound an alarm. The pressure block (3543) protrudes from the outer surface of the anti-slip block (3536).

8. The tensile testing equipment for railway pre-embedded channels as described in claim 1, characterized in that, The buffer assembly (5) includes a connecting plate (51), which is slidably connected to the inner cavity of the moving crossbeam (2). A first buffer mechanism (52) is provided in the middle part of the connecting plate (51), and a second buffer mechanism (53) is fixedly installed on the inner wall of the top of the moving crossbeam (2). The second buffer mechanism (53) is located on both sides of the upper surface of the connecting plate (51).

9. The tensile testing equipment for railway pre-embedded channels as described in claim 8, characterized in that, The first buffer mechanism (52) includes a connecting plate (521), the upper surface of the connecting plate (521) is fixedly connected to the connecting plate (51), and the lower end is fixedly connected to the sensor (6). A third slide rod (522) is fixedly installed on the outer surface of the connecting plate (521). A sixth spring (523) is sleeved on the outer surface of the third slide rod (522). A gasket (524) is slidably connected to the outer surface of the third slide rod (522). A fixing ring (525) is fixedly installed on the lower surface of the connecting plate (51). A buffer groove (526) is opened on the outer surface of the fixing ring (525). The third slide rod (522) and the buffer groove (526) are slidably connected. The sixth spring (523) is located between the connecting plate (521) and the gasket (524). The gasket (524) and the inner wall of the fixing ring (525) are slidably connected.

10. The railway pre-embedded channel tensile testing equipment as described in claim 9, characterized in that, The second buffer mechanism (53) includes a buffer frame (531), a second slide block (532) is slidably connected to the inner cavity of the buffer frame (531), a connecting strip (533) is rotatably connected to the outer surface of the second slide block (532), a seventh spring (534) is fixedly connected to the outer surface of the second slide block (532), the seventh spring (534) is located between the inner wall of the buffer frame (531) and the second slide block (532), a connecting rod (535) is rotatably connected to the end of the connecting strip (533) away from the second slide block (532), a sliding sleeve (536) is provided in the inner cavity of the connecting rod (535), the connecting rod (535) and the sliding sleeve (536) are slidably connected, the sliding sleeve (536) is fixedly connected to the inner wall of the buffer frame (531), the buffer frame (531) is fixedly connected to the inner wall of the moving crossbeam (2), and the connecting plate (51) and the sliding sleeve (536) are slidably connected.

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