High-strength rail fastener and performance inspection process thereof

Abstract

The invention discloses a high-strength rail fastener and a performance inspection process thereof, the performance inspection process comprises a workbench, a feeding assembly, a stretching assembly and a bending assembly, the feeding assembly comprises a supporting block, the supporting block is fixedly connected with the workbench, the top of the supporting block is fixedly connected with an L-shaped block, the L-shaped block is hollow, and the stretching assembly is fixedly connected with the workbench. And one side of the L-shaped block is connected with a pushing assembly, the stretching assembly comprises a moving rod, the moving rod is slidably connected to the outer side of the hollow pipe, the inner side of the workbench is connected with a driving assembly, the bending assembly comprises a second clamping assembly, and the second clamping assembly is connected with the moving rod. The rail fastener comprises the following components in parts by weight: 950-970 parts of iron, 3-10 parts of carbon, 10-20 parts of silicon, 5-15 parts of manganese, 0.2-0.3 part of sulfur, 50-70 parts of chromium, 2-6 parts of tungsten, 0.01-0.1 part of boron, 0.1-0.5 part of cerium and 0.1-1.0 part of vanadium, and the rail fastener disclosed by the invention can conveniently and efficiently realize a strengthening function.

Description

Technical Field

[0001] The present invention relates to the technical field of railway fasteners, and particularly relates to a high-strength railway fastener and its performance inspection process. Background Art

[0002] With the rapid development of railway transportation, the performance requirements for railway fasteners are also increasing day by day. As a key component connecting the railway track and the sleeper, the strength and durability of railway fasteners are directly related to the safety and stability of railway operation.

[0003] In the prior art, the materials of railway fasteners are mostly ordinary carbon steel or low alloy steel. Although they can meet the basic connection functions, their strength and durability are often difficult to guarantee in the face of complex and changeable operating environments (such as high temperature, low temperature, humidity, corrosion, etc.). Especially in the case of frequent operation of high-speed trains, the stress conditions of railway fasteners are more complex, and problems such as fatigue fracture and plastic deformation are likely to occur, seriously affecting the safety of railway operation.

[0004] At present, the tensile and bending tests of railway fasteners still largely rely on manual detection. During the manual detection process, the skill level, experience and subjective judgment of the operators will have a greater impact on the test results. Different operators may obtain different test results, resulting in poor reliability and consistency of the test results.

[0005] Therefore, it is necessary to provide a high-strength railway fastener and its performance inspection process, which can achieve a strong fixation effect. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-strength railway fastener and its performance inspection process to solve the problems raised in the above background art.

[0007] To solve the above technical problems, the present invention provides the following technical solution: A high-strength railway fastener and its performance inspection process, including a workbench, a feeding component, a stretching component, and a bending component.

[0008] The feeding component includes a support block, the support block is fixedly connected to the workbench, the top of the support block is fixedly connected with an L-shaped block, the inside of the L-shaped block is hollow, one side of the L-shaped block is connected with a pushing component, one side of the L-shaped block is fixedly connected with a feeding block, two circular grooves are opened at the bottom of the feeding block, a moving component is arranged inside the feeding block, the moving component corresponds to the circular grooves, and the bottom of the feeding block is connected with two hollow tubes, and the two hollow tubes are respectively connected to the stretching component and the bending component.

[0009] The stretching component includes a moving rod which is slidably connected to the outside of the hollow tube. A driving component is connected to the inside of the workbench, and the driving component is connected to the moving rod. A clamping component I is connected to one side of the moving rod, and a blanking component is connected to the inside of the bottom moving rod.

[0010] The bending component includes a clamping component II which is connected to the moving rod. One side of the workbench is fixedly connected with a support plate, and one side of the support plate is fixedly connected with a cylinder V. The output end of the cylinder V is connected with a piston rod IV, and one side of the piston rod IV is fixedly connected with a bending head.

[0011] In one embodiment, the pushing component includes a cylinder I and a cylinder II. The cylinder I and the cylinder II are fixedly connected to the L-shaped block. The output ends of the cylinder I and the cylinder II are both connected with a piston rod I, and one side of the piston rod I is fixedly connected with a pushing block. The bottom side of the L-shaped block is provided with a feeding groove, and the top side of the L-shaped block is provided with a material pushing groove.

[0012] In one embodiment, the moving component includes a cylinder III which is fixedly connected to the inside of the feeding block. The output end of the cylinder III is connected with a piston rod II, and one side of the piston rod II is fixedly connected with an H-shaped block. Two accommodating grooves are provided on one side of the H-shaped block, and the accommodating grooves correspond to the circular grooves.

[0013] In one embodiment, the driving component includes a double-headed motor which is fixedly connected to the inside of the workbench. The output end of the double-headed motor is connected with a rotating shaft I. Threads are provided on the outside of the rotating shaft I, and a cross plate is threadedly connected to the outside of the rotating shaft I. The cross plate abuts against the inside of the workbench, and the cross plate is fixedly connected to the moving rod.

[0014] In one embodiment, the clamping component I includes a motor I which is fixedly connected to the moving rod. The output end of the motor I is fixedly connected with a rotating shaft II, and one side of the rotating shaft II is fixedly connected with a gear I. The gear I is meshed with a gear II on one side, and the gear II is rotatably connected to the moving rod. Five inclined grooves are provided inside the gear II, and a convex rod is slidably fitted inside the inclined grooves. One side of the convex rod is fixedly connected with a slider, and the outside of the slider is slidably connected to a chute block which is fixedly connected to the moving rod. One side of the slider is fixedly connected with a clamping block I, and threads are provided inside the clamping block I.

[0015] In one embodiment, the blanking component includes a cylinder IV which is fixedly connected to the inside of the moving rod. The output end of the cylinder IV is connected with a piston rod III, and one side of the piston rod III is fixedly connected with a top block.

[0016] In one embodiment, the second clamping assembly includes a second motor, which is fixedly connected to a moving rod. The output end of the second motor is fixedly connected to a third rotating shaft. One side of the third rotating shaft is fixedly connected to a third gear. One side of the third gear is meshed with a rack. One side of the rack is fixedly connected to an upper and lower block, which is slidably connected to the moving rod. One side of the upper and lower block is rotatably connected to two first rockers. One side of the first rocker is rotatably connected to a second rocker. One side of the moving rod is fixedly connected to two transverse blocks. The middle of the second rocker is rotatably connected to the transverse block. One side of the second rocker is fixedly connected to a second clamping block.

[0017] In one embodiment, it includes the following components in parts by weight: 950 - 970 parts of iron, 3 - 10 parts of carbon, 10 - 20 parts of silicon, 5 - 15 parts of manganese, 0.2 - 0.3 parts of sulfur, 50 - 70 parts of chromium, 2 - 6 parts of tungsten, 0.01 - 0.1 parts of boron, 0.1 - 0.5 parts of cerium, and 0.1 - 1.0 parts of vanadium.

[0018] In one embodiment, the parts by weight of the components are specifically: 958 parts of iron, 6.2 parts of carbon, 15.5 parts of silicon, 10.8 parts of manganese, 0.25 parts of sulfur, 62 parts of chromium, 4.3 parts of tungsten, 0.05 parts of boron, 0.3 parts of cerium, and 0.6 parts of vanadium. The average diameter of the grains of the rail fastener is 5 - 8 microns, the carbide precipitation is uniform and the average particle size is 1 - 2 microns, and the precipitation amount of sulfide is less than 0.05% of the volume of the steel.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0020] 1. By providing a feeding assembly, a stretching assembly, a bending assembly, a clamping assembly and a blanking assembly, the present invention realizes the automatic feeding, fixing, detection and blanking of rail fasteners, reduces manual intervention, improves the detection efficiency and reduces the labor intensity. The multi - clamping - block design of the clamping assembly ensures the stability and reliability during the test. The collaborative design of the feeding assembly and the moving assembly realizes the continuous and spaced feeding of samples, ensures the orderly progress of the tensile test and the bending test, and improves the automation degree and working efficiency of the detection process;

[0021] 2. By adding alloying elements such as silicon, manganese, chromium, tungsten, boron, cerium, and vanadium, the present invention significantly improves the heat resistance, corrosion resistance, strength and toughness of the rail fasteners. The synergistic effect of these elements enables the fasteners to still maintain excellent performance under complex working conditions and extends the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following, by describing the specific embodiments of the present application in detail with reference to the drawings, will make the technical solutions and other beneficial effects of the present application obvious.

[0023] In the drawings:

[0024] Figure 1 is the overall structural schematic diagram of the present invention;

[0025] Figure 2 is the three-dimensional schematic diagram of the stretching component of the present invention;

[0026] Figure 3 is the three-dimensional schematic diagram of the first clamping component of the present invention;

[0027] Figure 4 is the partial three-dimensional schematic diagram of the first clamping component of the present invention;

[0028] Figure 5 is the three-dimensional schematic diagram of the bending component of the present invention;

[0029] Figure 6 is the partial three-dimensional schematic diagram of the bending component of the present invention;

[0030] Figure 7 is the three-dimensional schematic diagram of the second clamping component of the present invention;

[0031] Figure 8 is the three-dimensional schematic diagram of the feeding component of the present invention;

[0032] Figure 9 is the three-dimensional schematic diagram of the feeding block of the present invention;

[0033] Figure 10 is the three-dimensional schematic diagram of the moving component of the present invention;

[0034] In the figure: 1, workbench; 101, support block; 102, L-shaped block; 103, cylinder one; 104, feeding groove; 105, cylinder two; 106, material pushing groove; 107, feeding block; 108, cylinder three; 109, piston rod two; 110, H-shaped block; 111, receiving groove; 112, circular groove; 113, hollow tube; 114, moving rod;

[0035] 2, motor one; 201, rotating shaft two; 202, gear one; 203, gear two; 204, inclined groove; 205, convex rod; 206, slider; 207, chute block; 208, clamping block one;

[0036] 3, double-headed motor; 301, rotating shaft one; 302, cross plate;

[0037] 4, motor two; 401, rotating shaft three; 402, gear three; 403, rack; 404, upper and lower block; 405, rocker one; 406, rocker two; 407, cross block; 408, clamping block two;

[0038] 5, support plate; 501, cylinder five; 502, piston rod four; 503, bending head;

[0039] 6. Cylinder Four; 601. Piston Rod Three; 602. Top Block. Specific Embodiment

[0040] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0041] Please refer to Figures 1-10 , the present invention provides a technical solution: a high-strength rail fastener and its performance inspection process, including a workbench 1, a feeding component, a stretching component, and a bending component.

[0042] The feeding component includes a support block 101, the support block 101 is fixedly connected to the workbench 1, the top of the support block 101 is fixedly connected to an L-shaped block 102, the inside of the L-shaped block 102 is hollow, one side of the L-shaped block 102 is connected to a pushing component, one side of the L-shaped block 102 is fixedly connected to a feeding block 107, two circular grooves 112 are opened at the bottom of the feeding block 107, a moving component is arranged inside the feeding block 107, the moving component corresponds to the circular grooves 112, and the bottom of the feeding block 107 is connected to two hollow tubes 113, and the two hollow tubes 113 are respectively connected to the stretching component and the bending component;

[0043] The stretching component includes a moving rod 114, the moving rod 114 is slidably connected to the outside of the hollow tube 113, the inside of the workbench 1 is connected to a driving component, the driving component is connected to the moving rod 114, one side of the moving rod 114 is connected to a clamping component one, and the inside of the bottom moving rod 114 is connected to a blanking component;

[0044] The bending component includes a clamping component two, the clamping component two is connected to the moving rod 114, one side of the workbench 1 is fixedly connected to a support plate 5, one side of the support plate 5 is fixedly connected to a cylinder five 501, the output end of the cylinder five 501 is connected to a piston rod four 502, and one side of the piston rod four 502 is fixedly connected to a bending head 503.

[0045] Specifically, the rail fastener refers to a screw spike. To ensure the quality of the product, it is necessary to detect the screw spikes. Part of the samples are taken from each heat number, and the samples for the bending test and the tensile test are respectively fed into the feeding assembly, one by one at intervals. The samples are fed in from the bottom side of the L-shaped block 102. The inside of the L-shaped block 102 is designed to be hollow to provide space for the subsequent pushing assembly to push. The lower pushing assembly sends the samples up, and the side pushing assembly pushes the samples to a place close to the feeding block 107. The moving assembly inside the feeding block 107 moves. At the position connected to the L-shaped block 102, the pushing assembly pushes one sample into the moving assembly. The moving assembly moves, taking the sample to one of the circular grooves 112. The sample drops from the circular groove 112 and reaches the designated tensile position along the hollow tube 113. At this time, the pushing assembly continues to push the sample to another position inside the moving assembly. The moving assembly moves again, and the sample inside the moving assembly is sent to another circular groove 112 and drops to the designated position of the bending assembly along another hollow tube 113. These two hollow tubes 113 respectively serve as the feeding channels for the tensile assembly and the bending assembly, so that orderly and continuous interval feeding of the samples can be achieved.

[0046] The moving rod 114 is slidably connected to the outside of the hollow tube 113 and can move along the axial direction of the hollow tube 113. The driving assembly is installed inside the workbench 1, and the driving assembly is connected to the moving rod 114. In this way, the driving assembly can drive the two moving rods 114 to approach or move away from each other. After the screw spike is fixed, stretching can be carried out by moving away from each other. The blanking assembly is installed inside the lower moving rod 114. When the sample, that is, the screw spike, drops, the bottom of the screw spike falls into the inside of the lower moving rod 114, and the internal blanking assembly just holds the falling screw spike. At this time, the staff drives the clamping assembly one, and the clamping assembly one fixes both ends of the screw spike. Then the staff turns on the driving assembly to stretch the screw spike. The driving assembly can also adjust the distance between the two moving rods 114 at the beginning to prevent the screw spike from falling out when the distance between the two moving rods 114 is too large during the drop. When the tensile test is completed, the clamping assembly one is loosened, the distance between the two moving rods 114 is widened, and the blanking assembly inside the lower moving rod 114 ejects the screw spike to achieve automatic blanking.

[0047] Similarly, the sample drops from another hollow tube 113 and falls into the interior of the lower moving rod 114, which also has a blanking component inside. Initially, it can support the spiral spike. Then, the second clamping component at the top clamps the top of the spiral spike. The bottom of the spiral spike is close to the inner side of the moving rod 114. During the bending test, the bottom can be supported by the moving rod 114. At the same time, there is also a driving component on one side of the bending component. The principle of this driving component is the same as the above. When the spiral spike starts to fall, the distance between the two moving rods 114 can be adjusted through the driving component to avoid too large a distance between them. However, this bending component does not require stretching. The driving component only needs to adjust the distance between the two moving rods 114. After fixing, at this time, the staff opens the cylinder five 501 on one side, and the piston rod four 502 at the output end extends. The bending head 503 just presses on the spiral spike, and the continuous pressure causes the spiral spike to bend, thereby conducting the bending test. After the test is completed, the fixing is released, and the blanking component ejects the spiral spike to complete the blanking.

[0048] By setting up a feeding component and a blanking component, the device realizes automatic feeding and blanking during detection, reduces manual intervention, improves the automation degree of the detection process, and reduces the labor intensity. By setting up two clamping components, both the stretching component and the bending component are well fixed, ensuring stability during work.

[0049] The pushing component includes a cylinder one 103 and a cylinder two 105. The cylinder one 103 and the cylinder two 105 are fixedly connected to the L-shaped block 102. The output ends of the cylinder one 103 and the cylinder two 105 are both connected with a piston rod one. One side of the piston rod one is fixedly connected with a pushing block. The bottom side of the L-shaped block 102 is provided with a feeding groove 104, and the top side of the L-shaped block 102 is provided with a pushing groove 106.

[0050] Specifically, the screw spikes are fed into the bottom of the L-shaped block 102 through the feeding groove 104. There is just a pushing component at the bottom, that is, the first cylinder 103 is at the bottom. The screw spikes are just pushed onto the corresponding pushing block of the first cylinder 103. Then the first cylinder 103 starts, and the first piston rod extends, pushing the screw spikes upward and stopping when reaching the top. The feeding chute 106 is convenient for accommodating the first piston rod of the second cylinder 105. At this time, the second cylinder 105 starts, and the first piston rod extends. The corresponding pushing block pushes the screw spikes towards the feeding block 107. The pushing block that comes up can continue to go up to pick up the next screw spike. The screw spikes are pushed to the entrance part of the feeding block 107, waiting for the arrival of the moving component. After the moving component arrives, they are pushed into the inside of the moving component for separate feeding. The top of the L-shaped block 102 has a certain length, that is, it can accommodate a certain number of screw spikes. When the screw spikes below are replenished and the screw spikes above are being pushed, the one closest to the entrance can be pushed into the inside of the moving component. The whole process can be carried out continuously, ensuring the working efficiency.

[0051] The moving component includes a third cylinder 108. The third cylinder 108 is fixedly connected inside the feeding block 107. The output end of the third cylinder 108 is connected with a second piston rod 109. One side of the second piston rod 109 is fixedly connected with an H-shaped block 110. Two accommodating grooves 111 are opened on one side of the H-shaped block 110, and the accommodating grooves 111 correspond to the circular grooves 112.

[0052] Specifically, when the screw spike is at the opening of the feeding block 107, waiting for the arrival of the accommodating groove 111 of the moving component. When the third cylinder 108 drives the second piston rod 109 to extend, the whole H-shaped block 110 moves to the left. At this time, the right accommodating groove 111 can just reach the opening, pushing the screw spike to one side and pushing the screw spike into the inside of the accommodating groove 111. At this time, the second piston rod 109 retracts, and the right accommodating groove 111 brings the screw spike to the right circular groove 112, and the screw spike drops from the right circular groove 112 to complete the feeding. At this time, the left accommodating groove 111 comes to the opening, and the next screw spike is pushed into the left accommodating groove 111. Then the second piston rod 109 continues to extend, and the left accommodating groove 111 moves to the left and comes to the left circular groove 112, and the screw spike falls into the circular groove 112. In this way, separate feeding on both sides can be completed, saving the process of manual feeding and manpower.

[0053] The driving component includes a double-headed motor 3. The double-headed motor 3 is fixedly connected to the inner side of the workbench 1. The output end of the double-headed motor 3 is connected with a first rotating shaft 301. Threads are provided on the outer side of the first rotating shaft 301. A cross plate 302 is threadedly connected to the outer side of the first rotating shaft 301. The cross plate 302 abuts against the inner side of the workbench 1. The cross plate 302 and the moving rod 114 are fixedly connected.

[0054] Specifically, when the staff wants to drive the two moving rods 114 to move, the double-headed motor 3 is turned on at this time. The first rotating shaft 301 at the output end rotates. Since the first rotating shaft 301 and the cross plate 302 are threadedly connected, when the first rotating shaft 301 rotates, the cross plate 302 should also rotate and move accordingly. However, the cross plate 302 abuts against the inner side of the workbench 1, that is, the cross plate 302 cannot rotate. In this way, the cross plate 302 can only move. The thread directions on the outer sides of the two first rotating shafts 301 are opposite. In this way, under the rotation of the first rotating shaft 301, the two cross plates 302 approach or move away from each other, so as to drive the moving rods 114 to approach and move away from each other, so as to adjust the position of the moving rods 114 and stretch the spiral spikes.

[0055] The first clamping component includes a first motor 2. The first motor 2 and the moving rod 114 are fixedly connected. The output end of the first motor 2 is fixedly connected with a second rotating shaft 201. A first gear 202 is fixedly connected to one side of the second rotating shaft 201. A second gear 203 is meshed and connected to one side of the first gear 202. The second gear 203 and the moving rod 114 are rotatably connected. Five inclined slots 204 are provided inside the second gear 203. A convex rod 205 is slidably fitted inside the inclined slot 204. A slider 206 is fixedly connected to one side of the convex rod 205. The outer side of the slider 206 is slidably connected with a chute block 207. The chute block 207 and the moving rod 114 are fixedly connected. A first clamping block 208 is fixedly connected to one side of the slider 206. Threads are provided inside the first clamping block 208.

[0056] Specifically, after the screw spike reaches between the two moving rods 114, at this time, the staff member turns on the first motor 2 through the controller. After the first motor 2 starts, the second rotating shaft 201 driven by its output end starts to rotate. The rotation of the second rotating shaft 201 further drives the first gear 202 fixedly connected thereto to rotate. The rotation of the first gear 202 is transmitted to the second gear 203 through meshing, causing the second gear 203 to also start rotating. Five inclined slots 204 are provided inside the second gear 203. When the second gear 203 rotates, the inclined slots 204 also rotate accordingly. The convex rod 205 slidingly fitted inside the inclined slot 204 will receive a thrust along the direction of the inclined slot 204 due to the rotation of the inclined slot 204, and thus starts to move. The movement of the convex rod 205 drives the slider 206 fixedly connected to one side thereof to move together. The outer side of the slider 206 is slidably connected with a chute block 207, and the chute block 207 is fixedly connected to the moving rod 114. This allows the slider 206 to slide inside the chute block 207 while maintaining a stable relative position with the moving rod 114. As the slider 206 moves, the first clamping block 208 fixedly connected to one side thereof also moves accordingly. By controlling the rotation direction of the first motor 2, the second rotating shaft 201 can rotate forward or backward, and thus the rotation direction of the second gear 203 can be controlled. In this way, the five first clamping blocks 208 can move inward (clamp) or outward (open) simultaneously. In the clamped state, the five first clamping blocks 208 tightly surround the screw spike. The texture design inside the first clamping block 208 increases the friction with the screw spike, making the fixation more stable. In this way, during the stretching operation, the screw spike can remain stable and will not fall off, thus ensuring the smooth progress of the work. By providing five first clamping blocks 208 that move inward or outward simultaneously, the clamping and releasing efficiency is greatly improved. Compared with the traditional manual or single clamping block clamping method, this design can complete the clamping operation faster, save working time, and at the same time fix more firmly.

[0057] The blanking assembly includes a fourth cylinder 6. The fourth cylinder 6 is fixedly connected inside the moving rod 114. The output end of the fourth cylinder 6 is connected with a third piston rod 601. One side of the third piston rod 601 is fixedly connected with a top block 602.

[0058] Specifically, the blanking assembly is inside the lower moving rod 114. In this way, when the screw spike falls down, it just falls into the lower moving rod 114. The top block 602 of the lower blanking assembly can support the screw spike to prevent it from falling further and wait for inspection. After the inspection is completed, at this time, the fourth cylinder 6 is driven, and the third piston rod 601 at the output end extends. In this way, the top block 602 moves upward, and the screw spike is pushed out of the inside of the moving rod 114, completing automatic blanking, eliminating the process of manual blanking by the staff and saving manpower.

[0059] The second clamping assembly includes a second motor 4. The second motor 4 is fixedly connected to a moving rod 114. The output end of the second motor 4 is fixedly connected to a third rotating shaft 401. One side of the third rotating shaft 401 is fixedly connected to a third gear 402. One side of the third gear 402 is meshed with a rack 403. One side of the rack 403 is fixedly connected to an upper and lower block 404. The upper and lower block 404 is slidably connected to the moving rod 114. One side of the upper and lower block 404 is rotatably connected to two first rockers 405. One side of the first rocker 405 is rotatably connected to a second rocker 406. One side of the moving rod 114 is fixedly connected to two transverse blocks 407. The middle of the second rocker 406 is rotatably connected to the transverse block 407. One side of the second rocker 406 is fixedly connected to a second clamping block 408.

[0060] Specifically, when the screw spike reaches between the two moving rods 114 of the bending assembly, the distance between the two moving rods 114 has been adjusted at this time. The lower part of the screw spike is supported by the feeding assembly and is stable. At this time, the upper part of the screw spike is fixed, and the lower part abuts against the feeding assembly, so the whole can be stable and sufficient for the bending test. Therefore, when fixing, the staff member turns on the second motor 4 at this time, and the third rotating shaft 401 rotates accordingly. One side of the third rotating shaft 401 is fixedly connected to a third gear 402, and the third gear 402 can rotate. The rotation of the third gear 402 transmits power to the rack 403 meshed with it. Driven by the third gear 402, the rack 403 moves linearly along the direction meshed with the third gear 402. Due to the movement of the rack 403, the upper and lower block 404 also moves accordingly. One side of the upper and lower block 404 is rotatably connected to two first rockers 405. Driven by the upper and lower block 404, the first rocker 405 starts to rotate around its rotation connection point with the upper and lower block 404. One side of the first rocker 405 is rotatably connected to a second rocker 406. In this way, the rotation of the first rocker 405 is further transmitted to the second rocker 406. One side of the moving rod 114 is fixedly connected to two transverse blocks 407. The middle of the second rocker 406 is rotatably connected to the transverse block 407. This enables the second rocker 406 to rotate around its rotation connection point with the transverse block 407 when being driven by the first rocker 405. When the second rocker 406 rotates, the second clamping block 408 also moves accordingly, thereby realizing the approach and separation of the two second clamping blocks 408. Approaching means clamping, and separating means opening. This fixing method ensures that the screw spike will not move or fall off due to external forces during the bending test, improving the accuracy and reliability of the test.

[0061] It includes the following components in parts by weight: 950 - 970 parts of iron, 3 - 10 parts of carbon, 10 - 20 parts of silicon, 5 - 15 parts of manganese, 0.2 - 0.3 parts of sulfur, 50 - 70 parts of chromium, 2 - 6 parts of tungsten, 0.01 - 0.1 parts of boron, 0.1 - 0.5 parts of cerium, and 0.1 - 1.0 parts of vanadium.

[0062] Specifically, iron is the matrix material, constituting the main part of the fastener. Carbon is used to increase the hardness and strength of the steel. Silicon improves the heat resistance and corrosion resistance of the steel, and at the same time helps to refine the grains. Manganese increases the strength and toughness of the steel and improves the hardenability. The content of sulfur needs to be strictly controlled to avoid hot brittleness. Chromium improves the corrosion resistance and wear resistance of the steel. Tungsten increases the hardness and wear resistance of the steel and enhances the tempering stability. Boron refines the grains, improves the hardenability and hardness. Cerium, as a rare earth element, purifies the impurities in the steel and improves the purity and properties. Vanadium increases the strength and toughness of the steel.

[0063] According to the above components and parts by weight, accurately weigh each raw material. Use iron as the main raw material and put it into the smelting furnace, heat it to the molten state, the melting temperature of iron is about 1550 °C, and then add alloying elements such as carbon, silicon, manganese, chromium, tungsten, boron, cerium, and vanadium in sequence for full alloying. The alloying time is 45 minutes, and during the alloying process, sufficient stirring is required. Pour the smelted molten steel into the pre-prepared mold, control the casting temperature at 1550 °C for casting and forming, and perform heat treatment on the formed fastener, including quenching and tempering, to improve its microstructure and mechanical properties.

[0064] The parts by weight of the components are specifically: 958 parts of iron, 6.2 parts of carbon, 15.5 parts of silicon, 10.8 parts of manganese, 0.25 parts of sulfur, 62 parts of chromium, 4.3 parts of tungsten, 0.05 parts of boron, 0.3 parts of cerium, and 0.6 parts of vanadium. The average diameter of the grains of the rail fastener is 5 - 8 microns, the carbide precipitation is uniform and the average particle size is 1 - 2 microns, and the precipitation amount of sulfide is less than 0.05% of the volume of the steel.

[0065] Specifically, according to the design formula, accurately weigh the weight portions of each raw material: 958 parts of iron, 6.2 parts of carbon, 15.5 parts of silicon, 10.8 parts of manganese, 0.25 parts of sulfur, 62 parts of chromium, 4.3 parts of tungsten, 0.05 parts of boron, 0.3 parts of cerium, and 0.6 parts of vanadium, and then put them into a smelting furnace for smelting. During the smelting process, control the furnace temperature between about 1550 °C and 1600 °C, and keep the smelting time not less than 1.5 hours to ensure that the raw materials are fully melted and evenly mixed to form alloy steel liquid. Pour the smelted alloy steel liquid into a steel billet, and then perform heat treatment on the steel billet. The quenching temperature is set at about 950 °C, and the tempering temperature is set at about 500 °C. During the quenching process, heat the steel billet to 950 °C, and after holding for a predetermined time, quickly immerse it in water for rapid cooling to form the required grain structure and hard phase structure. After quenching, heat the steel billet to 500 °C for tempering treatment, take it out and air-cool it after holding for 1 hour to eliminate the quenching stress and adjust the organizational structure. Conduct a metallographic inspection on the heat-treated rail fasteners, observe the grain size, shape, distribution, and the precipitation state of carbides and sulfides, observe and analyze the microstructure of the rail fasteners, ensure that the average diameter of the grains is within the range of 5-8 microns, and by chemical analysis method, determine the precipitation state of carbides and the precipitation amount of sulfides in the rail fasteners, ensure that the precipitation of carbides is uniform and the average particle size is within the range of 1-2 microns, and the precipitation amount of sulfides is less than 0.05% of the volume of the steel.

[0066] By adding elements such as silicon, manganese, and chromium, the heat resistance, corrosion resistance, strength, and toughness are improved, making the fasteners have comprehensive excellent properties. The selection of specific quenching and tempering temperatures, as well as the reasonable holding time, ensure the uniformity and stability of the internal structure of the fasteners and improve their service life.

[0067] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that can communicate with each other; it can be directly connected, or it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the meanings of the above terms in this application can be understood according to specific circumstances.

[0068] The above has introduced in detail a high-strength rail fastener and its performance inspection process provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A performance inspection process for high-strength rail fasteners, comprising a workbench (1), a feeding assembly, a stretching assembly, and a bending assembly, characterized in that: The feeding assembly comprises a support block (101), wherein the support block (101) and the workbench (1) are fixedly connected, an L-shaped block (102) is fixedly connected to the top of the support block (101), the interior of the L-shaped block (102) is hollow, one side of the L-shaped block (102) is connected to a pushing assembly, one side of the L-shaped block (102) is fixedly connected to a feeding block (107), two circular grooves (112) are provided at the bottom of the feeding block (107), a moving assembly is arranged inside the feeding block (107), the moving assembly corresponds to the circular groove (112), the bottom of the feeding block (107) is connected to two hollow tubes (113), and the two hollow tubes (113) are respectively connected to the stretching assembly and the bending assembly; The stretching assembly comprises a moving rod (114), the moving rod (114) is slidably connected to the outside of the hollow tube (113), the inner side of the workbench (1) is connected to a driving assembly, the driving assembly and the moving rod (114) are connected, one side of the moving rod (114) is connected to a clamping assembly 1, and the bottom of the moving rod (114) is connected to a blanking assembly; The bending assembly comprises a clamping assembly 2, the clamping assembly 2 is connected to a moving rod (114), one side of the workbench (1) is fixedly connected to a support plate (5), one side of the support plate (5) is fixedly connected to a cylinder 5 (501), the output end of the cylinder 5 (501) is connected to a piston rod 4 (502), and one side of the piston rod 4 (502) is fixedly connected to a bending head (503).

2. A performance inspection process for a high-strength rail fastener according to claim 1, characterized in that: The pushing assembly comprises cylinder one (103) and cylinder two (105), wherein cylinder one (103) and cylinder two (105) are fixedly connected to an L-shaped block (102), the output ends of cylinder one (103) and cylinder two (105) are both connected to piston rod one, one side of piston rod one is fixedly connected to a pushing block, a feed groove (104) is provided on the bottom side of the L-shaped block (102), and a pushing groove (106) is provided on the top side of the L-shaped block (102).

3. The performance inspection process of a high-strength rail fastener according to claim 1, characterized in that: The moving component comprises a cylinder three (108), wherein the cylinder three (108) is fixedly connected to the inside of the feed block (107), the output end of the cylinder three (108) is connected to a piston rod two (109), one side of the piston rod two (109) is fixedly connected to an H-shaped block (110), one side of the H-shaped block (110) is provided with two receiving grooves (111), and the receiving grooves (111) correspond to the circular grooves (112).

4. The performance inspection process of a high-strength rail fastener according to claim 1, characterized in that: The driving assembly comprises a double-headed motor (3), the double-headed motor (3) is fixedly connected to the inner side of the workbench (1), the output end of the double-headed motor (3) is connected to a rotating shaft (301), the outer side of the rotating shaft (301) is provided with a thread, the outer side of the rotating shaft (301) is threadedly connected to a transverse plate (302), the transverse plate (302) and the inner side of the workbench (1) are abutted against each other, and the transverse plate (302) and the moving rod (114) are fixedly connected.

5. A performance inspection process for high-strength rail fasteners according to claim 4, characterized in that: The clamping assembly 1 comprises a motor 1 (2), the motor 1 (2) and the moving rod (114) are fixedly connected, the output end of the motor 1 (2) is fixedly connected to a rotating shaft 2 (201), one side of the rotating shaft 2 (201) is fixedly connected to a gear 1 (202), one side of the gear 1 (202) is meshingly connected to a gear 2 (203), the gear 2 (203) and the moving rod (114) are rotatably connected, and the interior of the gear 2 (203) is Five inclined grooves (204) are provided, and a convex rod (205) is slidably matched inside the inclined groove (204), a slider (206) is fixedly connected to one side of the convex rod (205), a slide block (207) is slidably connected to the outer side of the slider (206), the slide block (207) and the moving rod (114) are fixedly connected, a clamping block (208) is fixedly connected to one side of the slider (206), and a texture is arranged inside the clamping block (208).

6. The performance inspection process of a high-strength rail fastener according to claim 5, characterized in that: The unloading assembly comprises a cylinder four (6), wherein the cylinder four (6) is fixedly connected to the inside of the moving rod (114), the output end of the cylinder four (6) is connected to a piston rod three (601), and one side of the piston rod three (601) is fixedly connected to a top block (602).

7. The performance inspection process of a high-strength rail fastener according to claim 1, characterized in that: The clamping assembly 2 comprises a motor 2 (4), the motor 2 (4) and the moving rod (114) are fixedly connected, the output end of the motor 2 (4) is fixedly connected to a rotating shaft 3 (401), one side of the rotating shaft 3 (401) is fixedly connected to a gear 3 (402), one side of the gear 3 (402) is meshingly connected to a rack (403), one side of the rack (403) is fixedly connected to an upper and lower block (404), the upper and lower blocks (40 4) and the moving rod (114) are slidably connected, one side of the upper and lower blocks (404) is rotatably connected to two rocker arms (405), one side of the rocker arm (405) is rotatably connected to a rocker arm (406), one side of the moving rod (114) is fixedly connected to two cross blocks (407), the middle part of the rocker arm (406) and the cross block (407) are rotatably connected, and one side of the rocker arm (406) is fixedly connected to a clamping block (408).

8. A high-strength rail fastener according to any one of claims 1 to 7, characterized in that: The invention comprises the following components in parts by weight: 950-970 parts of iron, 3-10 parts of carbon, 10-20 parts of silicon, 5-15 parts of manganese, 0.2-0.3 parts of sulfur, 50-70 parts of chromium, 2-6 parts of tungsten, 0.01-0.1 parts of boron, 0.1-0.5 parts of cerium and 0.1-1.0 parts of vanadium.

9. A high-strength rail fastener according to claim 8, characterized in that: The weight proportions of the components are specifically as follows: 958 parts of iron, 6.2 parts of carbon, 15.5 parts of silicon, 10.8 parts of manganese, 0.25 parts of sulfur, 62 parts of chromium, 4.3 parts of tungsten, 0.05 parts of boron, 0.3 parts of cerium, and 0.6 parts of vanadium. The average diameter of the grains of the rail fastener is 5 to 8 microns, the carbides are precipitated uniformly and the average particle size is 1 to 2 microns, and the amount of sulfide precipitation is less than 0.05% of the volume of the steel.

Images