A kind of pin type car coupler gap detection device and method under simulation hitch state

Abstract

The application discloses a kind of pin type coupler gap detection device and method under analog hitching state, its device includes: hitching hook head, hitching hook head side is equipped with with the hook tongue cavity of the pin type coupler to be detected and with the arc structure of hook tongue cavity adaptation hitching groove;Fixed support frame, with the car coupler body of the pin type coupler to be detected fixed connection and hitching hook head and fixed support frame between sliding connection;Displacement detection device and hitching force simulation device are respectively used to measure the relative displacement amount between two and simulate the interaction between two.The method can detect the gap of pin type coupler or provide guidance for the processing of the tongue of pin type coupler by the above equipment.Compared with prior art, the beneficial effects of the present application are: by being equipped with quantitative visual indication mechanism, can be used with single set of car coupler hook head, i.e.real-time measurement of car coupler hitching gap greatly improves the accuracy and convenience of measuring pin type coupler hitching gap.

Description

Technical Field

[0001] This invention belongs to the field of pin-type coupler gap detection, specifically relating to a pin-type coupler gap detection device and method under simulated coupling conditions, as well as a method for processing the coupler tongue of the pin-type coupler. Background Technology

[0002] Close-coupled couplers are widely used in high-speed trains and urban rail vehicles both domestically and internationally. Their tight connection ensures high comfort and safety even under high-speed, multiple-unit operation. Because the design gap between the coupler surfaces is extremely small (no more than 2mm) after coupling, the machining precision requirements for the key dimensions of the coupler head are extremely high. Common close-coupled couplers can be divided into two categories: linkage couplers and pin couplers.

[0003] The pin-type coupler mainly consists of a hook body, a hook tongue, and a hook release rod. Both the hook tongue and the hook tongue cavity are semi-cylindrical structures. The hook tongue can rotate in the hook tongue cavity. In the coupled state, the two hooks form a complete cylindrical hook tongue and a cylindrical hook tongue cavity to achieve coupling.

[0004] During the use of pin-type couplers, as the coupling mechanism wears down, the coupling gap will gradually increase. When the gap exceeds a certain value, it needs to be inspected and replaced. Otherwise, it will lead to increased longitudinal impulse, affecting the riding experience, and in extreme cases, it may cause the coupler to disengage.

[0005] Currently, there are two common methods for measuring the coupling gap of pin-type couplers: one is to select two sets of couplers, pull them taut to both sides after coupling, and measure the average coupling gap at the four corners of the coupling surfaces of the two sets of couplers using a feeler gauge; the other method is to disassemble the coupler tongue and measure the local wear depth of the outer surface of the coupler tongue.

[0006] The above solutions have the following main problems: Solution 1 cannot measure the coupling gap of a single coupler; two couplers must be used in conjunction to measure the gap, and a test bench equipped with hydraulic tension equipment is required. Solution 2 requires disassembling the coupler to measure the gap, and the measured value only considers the wear of the coupler tongue, without considering the impact of the wear of the coupler tongue cavity on the coupling gap, resulting in inaccurate measurement results.

[0007] In summary, current measurement methods cannot quickly, conveniently, and accurately assess the wear and tear of a single pin-type coupler coupling system. Summary of the Invention

[0008] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects and advantages of the present application more readily apparent.

[0009] This invention addresses the aforementioned problems by disclosing a pin-type coupler gap detection device and method under simulated coupling conditions. By incorporating a quantified visual indicator mechanism and being used in conjunction with a single coupler head, the coupling gap of the coupler can be measured in real time, greatly improving the accuracy and convenience of measuring the coupling gap of the pin-type coupler.

[0010] This invention discloses a pin-type coupler gap detection device under simulated coupling conditions, comprising:

[0011] The hook head has a connecting groove on one side for matching the arc-shaped structure inside the hook tongue cavity of the pin-type car coupler to be tested.

[0012] A fixed support frame is used to fix the coupler body of the pin-type coupler to be tested, and the coupler head and the fixed support frame are slidably connected.

[0013] The displacement detection device and the connecting force simulation device are used to measure the relative displacement between the two and to simulate the interaction force between them, respectively.

[0014] In some embodiments, the traction force simulation device includes:

[0015] A sleeve is connected to the connecting hook head; both ends of the sleeve are provided with sliding limit blocks, and the sliding limit blocks are slidably engaged with the sliding grooves provided on the fixed support frame;

[0016] A push threaded rod is threadedly connected to the fixed support frame, and its inner end is rotatably connected to the sleeve;

[0017] A torque wrench is located at the outer end of the push threaded rod.

[0018] In some embodiments, the displacement detection device includes:

[0019] The main scale indicator line is located in the sliding groove on the fixed support frame;

[0020] The vernier indicator line is located on the upper end face of the sliding limit block.

[0021] In some implementations, it also includes:

[0022] A sliding indicator shaft mounting hole is provided through the sleeve;

[0023] A sliding indicator shaft is installed inside the sleeve through the sliding indicator shaft mounting hole;

[0024] The sliding limit block is located at the upper and lower ends of the sliding indicator shaft, and the sliding limit block is adapted to the width of the sliding groove.

[0025] In some implementations, it also includes:

[0026] A connecting plate is disposed between the sleeve and the push threaded rod;

[0027] The inner end of the push threaded rod passes through the connecting plate and is rotatably connected to it; both ends of the connecting plate are fixedly connected to the sleeve by fastening bolts.

[0028] In some embodiments, the sliding indicator shaft is provided with a positioning groove corresponding to the position of the fastening bolt; the fastening bolt is threadedly connected to the sleeve, and the end of the fastening bolt is engaged in the positioning groove.

[0029] In some embodiments, the displacement detection device is a movable vernier caliper.

[0030] In some embodiments, one side of the fixed support frame is open; the hook head is slidably engaged within one end of the open structure of the fixed support frame.

[0031] This invention also discloses a method for detecting the gap of a pin-type coupler under simulated coupling conditions, including a pin-type coupler gap detection device under simulated coupling conditions as described in any of the above embodiments, and the detection method is as follows:

[0032] A1. Fix the fixed support frame on the coupler body of the pin-type coupler to be tested, and align the connecting groove in the connecting head with the hook tongue cavity in the pin-type coupler to be tested.

[0033] A2. Rotate the hook tongue inside the pin-type coupler to be tested so that the hook tongue is located between the hook tongue cavity and the coupling groove;

[0034] A3. Simulate the magnitude of the force under the connected state using the connecting force simulation device and pull the connecting hook head outward;

[0035] A4. The displacement deviation between the hook head and the fixed support frame is read by the displacement detection device. The displacement deviation is the wear of the pin-type coupler under the coupling state.

[0036] This invention also discloses a method for machining the hook tongue of a pin-type coupler, including a pin-type coupler gap detection device under simulated coupling conditions as described in any of the above embodiments, the machining method being as follows:

[0037] A1. Fix the fixed support frame on the coupler body that is compatible with the hook tongue to be processed, and align the connecting groove in the hook head with the hook tongue cavity in the coupler body to be processed.

[0038] A2. Rotate the hook tongue to be processed so that it is located between the hook tongue cavity and the connecting groove;

[0039] A3. Simulate the magnitude of the force under the connected state using the connecting force simulation device and pull the connecting hook head outward;

[0040] A4. The displacement deviation between the hook head and the fixed support frame is read by the displacement detection device. The difference between the displacement deviation and the design value of the hook tongue to be processed is the machining allowance value of the hook tongue to be processed.

[0041] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0042] This invention discloses a pin-type coupler gap detection device under simulated coupling conditions. This device can quickly, conveniently, and accurately measure the gap state of a single pin-type coupler under coupling conditions, thereby better evaluating the wear state of the coupler tongue and the tongue cavity as a whole, and ensuring the accuracy and high precision of the coupling gap measurement value.

[0043] This invention discloses a method for detecting the gap of a pin-type coupler under simulated coupling conditions. The method is simple and quick, and can be carried out without being affected by the site environment. It avoids the drawbacks of traditional measurement methods that require a test bench or complete disassembly of the coupler before testing, and greatly improves the testing efficiency.

[0044] This invention discloses a method for machining the hook tongue of a pin-type coupler. It uses a method similar to the gap detection method for pin-type couplers to guide the machining allowance of the coupler. At the same time, it can provide a more representative actual setting machining value for the coupler by combining the magnitude of the force under the coupling state. Attached Figure Description

[0045] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0046] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0047] Figure 2 This is a three-dimensional structural diagram of the hook head of the present invention.

[0048] Figure 3 This is a three-dimensional structural diagram of the fixed support frame of the present invention.

[0049] Figure 4 This is a three-dimensional connection structure diagram of the threaded rod, connecting plate, and torque wrench of the present invention.

[0050] Figure 5 This is a three-dimensional structural diagram of the sliding indicator shaft of the present invention.

[0051] Figure 6This is a schematic diagram of the structure during the measurement process of the present invention.

[0052] Figure 7 This is a three-dimensional structural diagram of the installation process of the present invention.

[0053] Attached drawings: 1. Hook head; 2. Hanging groove; 3. Fixed support frame; 4. Sliding groove; 5. Sliding indicator shaft; 6. Scale line; 7. Push threaded rod; 8. Connecting plate; 9. Torque wrench; 10. Sliding indicator shaft mounting hole; 11. Sliding limit block; 12. Positioning groove; 13. Fastening bolt; 14. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments provided by this invention without inventive effort are within the scope of protection of this invention.

[0055] Obviously, the accompanying drawings described below are merely some examples or embodiments of the present invention. Those skilled in the art can apply the present invention to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this invention, modifications to design, manufacturing, or production based on the technical content disclosed in this invention are merely conventional technical means and should not be construed as insufficient disclosure of the present invention.

[0056] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention may be combined with other embodiments without conflict.

[0057] A device for detecting the gap of a pin-type coupler under simulated coupling conditions includes: a coupler head 1, a fixed support frame 3, a displacement detection device, and a coupling force simulation device; one side of the coupler head 1 is provided with a coupling groove 2 that aligns with the inner hook tongue cavity of the pin-type coupler to be tested and is adapted to the arc-shaped structure of the hook tongue cavity; such as Figure 6As shown, the hook tongue cavity of the pin-type coupler has a semi-circular structure, and the connecting groove 2 adopts an arc-shaped end face structure consistent with the size of the hook tongue cavity; preferably, half of the semi-circular structure of the hook tongue cavity can be used. Through the above structural design, the hook tongue cavity and the connecting groove 2 are matched in all aspects, ensuring that the hook tongue can smoothly switch and slide between the hook tongue cavity and the connecting groove 2. The fixed support frame 3 is used to fixally connect to the coupler body of the pin-type coupler to be tested, and the connecting hook head 1 and the fixed support frame 3 are slidably connected; the displacement detection device and the connecting force simulation device are used to measure the relative displacement between the two and simulate the interaction force between them, respectively.

[0058] In use, first align the coupling groove 2 with the hook tongue cavity, then rotate the hook tongue to position it between the two, simulating a normal coupling state. At this time, apply an outward pulling force to the coupling head 1 through the coupling force simulation device to simulate the force under coupling conditions. If the hook tongue cavity and / or the hook tongue are worn, the coupling head 1 will displace. The amount of displacement is detected and identified by the displacement detection device to obtain the actual wear condition of the coupler.

[0059] like Figure 1 , 4 As shown in Figures 6 and 7, in some embodiments, the connecting force simulation device includes: a sleeve 5, a push threaded rod 8, and a torque wrench 10; the sleeve 5 is connected to the connecting hook head 1; both ends of the sleeve 5 are provided with sliding limit blocks 12, and the sliding limit blocks 12 are slidably engaged with the sliding grooves 4 provided on the fixed support frame 3; the push threaded rod 8 is threadedly connected to the fixed support frame 3, and its inner end is rotatably connected to the sleeve 5; the torque wrench 10 is located at the outer end of the push threaded rod 8.

[0060] The torque force is detected by the torque wrench 10 to simulate the connecting tension between the hook head 1 and the connecting groove 2. At the same time, the threaded structure has a built-in locking effect, making the simulation process more stable and reliable.

[0061] like Figure 1 , 3 As shown in Figure 5, in some embodiments, the displacement detection device includes: a main scale indicator line and a vernier indicator line; the main scale indicator line is located at the sliding groove 4 on the fixed support frame 3; the vernier indicator line is located at the upper end face of the sliding limit block 12.

[0062] The actual wear value of the coupler can be obtained by comparing the scale deviations of the main scale indicator line and the vernier indicator line. It should be noted that the displacement change between the coupler head 1 and the fixed support frame 3 is not the actual wear value but the relative wear value. Therefore, the scale accuracy of the main scale indicator line and the vernier indicator line needs to be set according to the actual situation so that the operator can finally obtain the actual wear value.

[0063] Similarly, the displacement detection device can also be a movable vernier caliper, a displacement sensor, or another displacement detection unit.

[0064] like Figure 4 , 5 As shown, in some embodiments, it further includes: a sliding indicator shaft mounting hole 11 and a sliding indicator shaft 6; the sliding indicator shaft mounting hole 11 is provided through the sleeve 5; the sliding indicator shaft 6 is installed in the sleeve 5 through the sliding indicator shaft mounting hole 11; the sliding limiting block 12 is provided at the upper and lower ends of the sliding indicator shaft 6, and the sliding limiting block 12 is adapted to the width of the sliding groove 4.

[0065] like Figure 4 As shown, in some embodiments, it further includes: a connecting plate 9, which is disposed between the sleeve 5 and the push threaded rod 8; the inner end of the push threaded rod 8 passes through the connecting plate 9 and is rotatably connected to it; the two ends of the connecting plate 9 are fixedly connected to the sleeve 5 by fastening bolts 14.

[0066] like Figure 5 As shown, in some embodiments, the sliding indicator shaft 6 is provided with a positioning groove 13 corresponding to the position of the fastening bolt 14; the fastening bolt 14 is threadedly connected to the sleeve 5, and the end of the fastening bolt 14 is engaged in the positioning groove 13.

[0067] like Figure 2 , 3 As shown, in some embodiments, one side of the fixed support frame 3 is open; the hook head 1 is slidably engaged in one end of the open structure of the fixed support frame 3.

[0068] The above structural design makes the equipment easier to disassemble and assemble, and also makes the transmission relationship between the components more reliable. For example, the end of the fastening bolt 14 is embedded in the positioning groove 13 to limit the longitudinal movement of the sliding indicator shaft 6. The width of the sliding limit block 12 is matched with the width of the sliding groove 4 to ensure stability during the displacement process.

[0069] like Figure 6As shown, a method for detecting the gap of a pin-type coupler under simulated coupling conditions includes a pin-type coupler gap detection device under simulated coupling conditions as described in any of the above embodiments, and the detection method is as follows:

[0070] A1. Fix the fixed support frame 3 on the coupler body of the pin-type coupler to be tested, and align the connecting groove 2 in the connecting head 1 with the hook tongue cavity in the pin-type coupler to be tested.

[0071] A2. Rotate the hook tongue inside the pin-type coupler to be tested so that the hook tongue is located between the hook tongue cavity and the connecting groove 2;

[0072] A3. Simulate the magnitude of the force under the connected state using the connecting force simulation device and pull the connecting hook head 1 outward;

[0073] A4. The displacement deviation between the hook head 1 and the fixed support frame 3 is read by the displacement detection device. The displacement deviation is the wear of the pin-type coupler under the coupling state.

[0074] The preferred detection method is:

[0075] like Figure 7 As shown, firstly, the upper and lower mounting plates of the fixed support frame 3 are fixed to the coupling end face of the coupler body of the pin-type coupler to be tested, and fixed with bolts. During installation, magnets or auxiliary hooks can be added between the two for auxiliary fixing. Then, the threaded rod 8 is rotated to align the coupling groove 2 in the coupling head 1 with the hook tongue cavity in the pin-type coupler to be tested. Next, the hook tongue in the pin-type coupler to be tested is rotated so that it is positioned between the hook tongue cavity and the coupling groove 2, simulating the actual coupling state. At this time, the torque wrench 10 is set to the desired torque value, and the threaded rod 8 is rotated to move the coupling head 1 outward. During this process, the coupling groove 2 in the coupling head 1 will press against the hook tongue inside. If wear occurs on the hook tongue, the displacement value will be fed back through the corresponding displacement detection device. If the reaction value deviates from the design-specified coupling gap range, corresponding repair and replacement are required.

[0076] A method for machining the hook tongue of a pin-type coupler, including a pin-type coupler gap detection device under simulated coupling conditions as described in any of the above embodiments, wherein the machining method is as follows:

[0077] A1. Fix the fixed support frame 3 on the coupler body that is compatible with the hook tongue to be processed, and make the connecting groove 2 in the hook head 1 aligned with the hook tongue cavity in the coupler body to be processed.

[0078] A2. Rotate the hook tongue to be processed so that the hook tongue to be processed is located between the hook tongue cavity and the connecting groove 2;

[0079] A3. Simulate the magnitude of the force under the connected state using the connecting force simulation device and pull the connecting hook head 1 outward;

[0080] A4. The displacement deviation between the hook head 1 and the fixed support frame 3 is read by the displacement detection device. The difference between the displacement deviation and the design value of the hook tongue to be processed is the machining allowance value of the hook tongue to be processed.

[0081] The principle used in the processing of the hook tongue of the pin-type coupler is the same as that used in the gap detection method. Both methods compare the hook tongue with the set standard value to make corresponding judgments and selections. Therefore, no further details will be provided.

[0082] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pin-type coupler gap detection device simulating coupled conditions, characterized in that, include: The hook head has a connecting groove on one side for matching the arc-shaped structure inside the hook tongue cavity of the pin-type car coupler to be tested. A fixed support frame is used to fix the coupler body of the pin-type coupler to be tested, and the coupler head and the fixed support frame are slidably connected. The displacement detection device and the connecting force simulation device are used to measure the relative displacement between the two and to simulate the interaction force between them, respectively. The connecting force simulation device includes: A sleeve is connected to the connecting hook head; both ends of the sleeve are provided with sliding limit blocks, and the sliding limit blocks are slidably engaged with the sliding grooves provided on the fixed support frame; A push threaded rod is threadedly connected to the fixed support frame, and its inner end is rotatably connected to the sleeve; A torque wrench is located at the outer end of the push threaded rod.

2. The pin-type coupler gap detection device under simulated coupling conditions according to claim 1, characterized in that, The displacement detection device includes: The main scale indicator line is located in the sliding groove on the fixed support frame; The vernier indicator line is located on the upper end face of the sliding limit block.

3. The pin-type coupler gap detection device under simulated coupling conditions according to claim 2, characterized in that, Also includes: A sliding indicator shaft mounting hole is provided through the sleeve; A sliding indicator shaft is installed inside the sleeve through the sliding indicator shaft mounting hole; The sliding limit block is located at the upper and lower ends of the sliding indicator shaft, and the sliding limit block is adapted to the width of the sliding groove.

4. The pin-type coupler gap detection device under simulated coupling conditions according to claim 3, characterized in that, Also includes: A connecting plate is disposed between the sleeve and the push threaded rod; The inner end of the push threaded rod passes through the connecting plate and is rotatably connected to it; both ends of the connecting plate are fixedly connected to the sleeve by fastening bolts.

5. The pin-type coupler gap detection device under simulated coupling state according to claim 4, characterized in that, The sliding indicator shaft is provided with a positioning groove corresponding to the position of the fastening bolt; the fastening bolt is threadedly connected to the sleeve, and the end of the fastening bolt is engaged in the positioning groove.

6. The pin-type coupler gap detection device under simulated coupling conditions according to claim 1, characterized in that, The displacement detection device is a movable vernier caliper.

7. The pin-type coupler gap detection device under simulated coupling conditions according to claim 1, characterized in that, One side of the fixed support frame is open; the hook head is slidably engaged in one end of the open structure of the fixed support frame.

8. A method for detecting the gap of a pin-type coupler under simulated coupling conditions, characterized in that, The device for detecting gaps in a pin-type coupler under simulated coupling conditions, as described in any one of claims 1-7, includes the following detection method: A1. Fix the fixed support frame on the coupler body of the pin-type coupler to be tested, and align the connecting groove in the connecting head with the hook tongue cavity in the pin-type coupler to be tested. A2. Rotate the hook tongue inside the pin-type coupler to be tested so that the hook tongue is located between the hook tongue cavity and the coupling groove; A3. Simulate the magnitude of the force under the connected state using the connecting force simulation device and pull the connecting hook head outward; A4. The displacement deviation between the hook head and the fixed support frame is read by the displacement detection device. The displacement deviation is the wear of the pin-type coupler under the coupling state.

9. A method for machining the hook tongue of a pin-type coupler, characterized in that it includes a pin-type coupler gap detection device under simulated coupling conditions as described in any one of claims 1-7, and the machining method is as follows: A1. Fix the fixed support frame on the coupler body that is compatible with the hook tongue to be processed, and align the connecting groove in the hook head with the hook tongue cavity in the coupler body to be processed. A2. Rotate the hook tongue to be processed so that it is located between the hook tongue cavity and the connecting groove; A3. Simulate the magnitude of the force under the connected state using the connecting force simulation device and pull the connecting hook head outward; A4. The displacement deviation between the hook head and the fixed support frame is read by the displacement detection device. The difference between the displacement deviation and the design value of the hook tongue to be processed is the machining allowance value of the hook tongue to be processed.

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