An intelligent handheld pantograph tension tester

Abstract

The present invention discloses an intelligent handheld pantograph tension tester, which includes a fixing mechanism for fixing the pantograph and a testing mechanism for testing the pantograph tension. The testing mechanism includes a tension sensor, a rope assembly, a locking assembly, and a handheld controller. One end of the tension sensor is connected to the fixing mechanism, and the other end of the tension sensor is connected to the rope assembly. The locking assembly is respectively connected to the pantograph and the rope assembly. The handheld controller is used to control the pantograph tension testing process. The locking assembly includes a clamping block. A clamping groove is formed on one side of the clamping block. A limiting module is arranged on the clamping block at the top of the clamping groove. The limiting module is used to lock the whole locking assembly at the corresponding position of the pantograph. A testing module is arranged on the clamping block at the bottom of the clamping groove. The testing module is used to test the locking state. A winding module is arranged at the bottom of the clamping block. The winding module is used to cooperate with the rope assembly for winding. The present invention improves the accuracy in the process of pantograph tension detection.

Description

Technical Field

[0001] The invention relates to the technical field of tension testing, and in particular to an intelligent handheld pantograph tension testing instrument. Background Art

[0002] With the rapid development of my country's rail transit industry, the number and types of rail vehicles are increasing. Among them, pantograph current collection is a mainstream vehicle power collection method, which is widely used in urban railways and high-speed railways. It has the advantages of simple structure, small installation space, long service life and less operation and maintenance workload. As a high-voltage device of the vehicle in direct contact with the contact network, the pantograph bears all the power input of the vehicle, and is exposed outside the vehicle for a long time, bearing high voltage and current, and the working conditions are very harsh. Therefore, it is of great significance to the safe and stable operation of rail vehicles to test the interaction performance between the pantograph and the contact network, analyze the current collection of the pantograph and the contact network, and ensure the good working condition of the pantograph.

[0003] Pantograph tension test is an important part of the maintenance of electrified railway vehicles, which involves the detection and evaluation of pantograph performance. Pantograph tension test includes two categories: static and dynamic. Static test mainly includes: static contact force test and lateral stiffness test. Static contact force test refers to the static force measurement directly under the pantograph suspension part during repeated continuous raising and lowering of the pantograph; lateral stiffness test is to apply lateral tension horizontally on both sides of the pantograph bow head to measure the maximum lateral displacement of the pantograph bow head. After the lateral tension is cancelled, the pantograph should be able to return to its initial state without any permanent deformation.

[0004] Most of the existing tension testers for pantographs are tension sensors, and a connection structure is added on their basis to facilitate measurement. However, tension sensors are mostly connected by hooks. When hung on the bow head, the pantograph will slip during the raising process, affecting the accuracy of the measurement. At the same time, the initial heights of pantographs of different specifications are different. When measuring, the tension sensor needs to adjust the length of the connecting rope according to the actual height of the bow head, which is inconvenient to operate. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent handheld pantograph tension tester to solve the problems raised in the above background technology.

[0006] To solve the above technical problems, the present invention provides the following technical solution: an intelligent handheld pantograph tension tester, which includes a fixing mechanism for fixing the pantograph and a testing mechanism for testing the pantograph tension. The testing mechanism includes a tension sensor, a rope assembly, a locking assembly, and a handheld controller. One end of the tension sensor is connected to the fixing mechanism, and the other end of the tension sensor is connected to the rope assembly. The locking assembly is respectively connected to the pantograph and the rope assembly. The handheld controller is manually controlled and is used to control the pantograph tension testing process.

[0007] According to the above technical solution, the locking assembly includes a clamping block. A clamping groove is provided on one side of the clamping block. A limiting module is provided on the clamping block at the top of the clamping groove. The limiting module is used to lock the whole locking assembly at the corresponding position of the pantograph. A testing module is provided on the clamping block at the bottom of the clamping groove. The testing module is used to test the locking state. A winding module is provided at the bottom of the clamping block. The winding module is used to cooperate with the rope assembly for winding.

[0008] According to the above technical solution, the testing module includes a first testing block. A first pressure sensing groove is provided on the upper end surface of the first testing block. A second testing block is slidably arranged in the first pressure sensing groove. The sliding direction of the second testing block is perpendicular to the opening direction of the clamping groove. The upper end surface of the second testing block is flush with or slightly higher than the end surface at the bottom of the clamping groove. A second pressure sensing groove for slidably cooperating with the first testing block is provided on the clamping block. The sliding direction of the first testing block is the same as the opening direction of the clamping groove.

[0009] According to the above technical solution, impact blocks are connected to both sides of the first testing block along its sliding direction. The second pressure sensing groove is divided into a sliding groove and a sensing groove. The first testing block moves in the sliding groove, and the sensing groove is arranged to cooperate with the impact blocks. The impact blocks move in the sensing groove. When the first testing block moves, the corresponding impact block hits the inner surface of the sensing groove, and the corresponding pressure is detected.

[0010] According to the above technical solution, the limiting module includes a first screw, a first gear, a limiting plate, a second gear, and a first motor. One end of the first screw passes through the top of the clamping block into the clamping groove and is rotatably connected to the limiting plate. The first screw is in threaded cooperation with the clamping block. The first gear is threadedly connected to the first screw and is rotatably connected to the corresponding surface of the clamping block. The second gear meshes with the first gear. The driving end of the first motor is connected to the second gear.

[0011] According to the above technical solution, the winding module includes an extension block, two sliding frames, a first rotating rod, a third gear, a fourth gear, and a second motor. The extension block is fixed to the bottom of the clamping block and its left and right sides are flush with the two sides of the clamping block. The two sliding frames are respectively arranged on the left and right sides of the extension block. The first rotating rod passes through the two sliding frames and its two ends respectively pass through the two sliding frames. The third gear is fixedly sleeved on the first rotating rod. The fourth gear meshes with the third gear. The driving end of the second motor is connected to the fourth gear.

[0012] According to the above technical solution, two slideways are respectively arranged on the left and right sides of the extension block and the clamping block to cooperate with the corresponding sliding frames. A moving channel penetrating through the left and right is arranged on the extension block and the clamping block between the two slideways. A connecting block is sleeved on the first rotating rod between the two sliding frames. An electric push rod is fixed at the bottom of the extension block, and the driving end of the electric push rod is connected to the connecting block to push the first rotating rod to move up and down along the moving channel.

[0013] According to the above technical solution, a rotation induction sensor is arranged inside the connecting block to detect the rotation state of the first rotating rod.

[0014] According to the above technical solution, the rope assembly includes a main pull rope, a connecting seat, and two branch pull ropes. One end of the main pull rope is fixedly connected to the connecting seat, and the other end of the main pull rope is set as a loop structure for connecting with a tension sensor. One end of each of the two branch pull ropes is connected to the connecting seat, and the other end of each of the two branch pull ropes is set as a loop structure for connecting with both ends of the first rotating rod.

[0015] According to the above technical solution, the fixing mechanism includes a fixing seat, four second screws, four motor pulley sets, and two pressing plates. The four second screws are rotatably arranged at the four corners of the fixing seat, and the four motor pulley sets are respectively connected to the corresponding second screws. Each pressing plate is penetrated through and threadedly matched with the two second screws on the same side.

[0016] According to the above technical solution, a long groove is arranged on the upper end surface of the fixing seat. Two guide wheels are arranged in the long groove, and a guide channel is arranged inside the guide wheels. Two intermediate wheels and two connecting ropes are also arranged on the fixing seat. One end of one connecting rope is fixedly connected to one of the second screws. The other end of the connecting rope sequentially passes through the corresponding intermediate wheel and guide wheel and then is connected to an inner limiting plate. A spring is connected between the inner limiting plate and the long groove. When the spring is in a stretched state, it does not limit the pantograph. When the spring is in a free state, it limits the pantograph.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0018] By providing a test module in the present invention, the first test block can judge whether the clamping block is locked in place up and down according to the detected force signal, so as to determine whether the clamping connection between the clamping block and the pantograph is stable, avoiding the situation that the clamping block disengages during the test. The second test block can judge whether the clamping block will slip during the test according to the detected force signal. At the same time, the retracted pull rope can limit both sides of the clamping block, improving the accuracy of the test. By providing a fixing mechanism, the bottom frame of the pantograph can be fixed in two directions at the same time, making the fixing more firm and flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions of the specific embodiments of the present invention, the following will briefly introduce the drawings required for the description of the specific embodiments. Obviously, the drawings in the following description are some specific embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 is the overall structural schematic diagram provided by the embodiment of the present invention;

[0021] Figure 2 is the structural schematic diagram of the clamping block provided by the embodiment of the present invention;

[0022] Figure 3 is the partial sectional view of the clamping block provided by the embodiment of the present invention;

[0023] Figure 4 is Figure 3 the enlarged schematic view of area A of ;

[0024] Figure 5 is the structural schematic diagram of the cooperation between the first gear and the clamping block provided by the embodiment of the present invention;

[0025] Figure 6 is the structural schematic diagram of the winding module provided by the embodiment of the present invention;

[0026] Figure 7 is Figure 6 the enlarged schematic view of area B of ;

[0027] Figure 8 is the structural schematic diagram of the fixing mechanism provided by the embodiment of the present invention;

[0028] Figure 9 is the partial sectional view of the fixing mechanism provided by the embodiment of the present invention;

[0029] Figure 10 is the connection structural schematic diagram of the connecting rope provided by the embodiment of the present invention;

[0030] Figure 11 is the structural schematic diagram of the pantograph provided by the embodiment of the present invention.

[0031] In the figure: 1. Pantograph; 11. Underframe; 12. Lower arm rod; 13. Upper frame; 14. Bow head; 2. Fixing mechanism; 21. Fixing seat; 211. Long slot; 22. Second screw; 23. Motor pulley set; 24. Pressure plate; 25. Guide wheel; 251. Guide channel; 26. Intermediate wheel; 27. Connecting rope; 28. Inner limit plate; 29. Spring; 3. Tensile sensor; 4. Rope assembly; 41. Main pulling rope; 42. Connecting seat; 43. Branch pulling rope; 5. Locking assembly; 51. Block; 511. Clamping groove; 512. Slideway; 513. Moving channel; 61. First test block; 611. First pressure sensing groove; 612. Impact block; 62. Second test block; 621. Friction block; 63. Second pressure sensing groove; 71. First screw; 72. First gear; 721. Limit block; 73. Limit plate; 74. Second gear; 75. First motor; 81. Extension block; 811. Sealing plate; 812. Electric push rod; 82. Slide carriage; 83. First rotating rod; 831. Connecting block; 84. Third gear; 85. Fourth gear; 86. Second motor. Detailed implementation mode

[0032] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] Please refer to Figures 1 - 11, an embodiment of the present invention provides an intelligent handheld pantograph tension tester, which includes a fixing mechanism 2 for fixing the pantograph 1 and a testing mechanism for testing the tension of the pantograph 1. Among them, the testing mechanism includes a tension sensor 3, a rope assembly 4, a locking assembly 5 and a handheld controller. One end of the tension sensor 3 is connected to the fixing mechanism 2, and the other end of the tension sensor 3 is connected to the rope assembly 4. The locking assembly 5 is respectively connected to the pantograph 1 and the rope assembly 4. The handheld controller is manually controlled and is used to control the process of testing the tension of the pantograph 1.

[0036] The locking assembly 5 includes a clamping block 51. A clamping groove 511 is formed on one side of the clamping block 51. A limiting module is arranged on the clamping block 51 at the top of the clamping groove 511. The limiting module is used to lock the whole locking assembly 5 at the corresponding position of the pantograph 1. A testing module is arranged on the clamping block 51 at the bottom of the clamping groove 511 (i.e., the groove surface opposite to the limiting module). The testing module is used to test the locking state. A winding module is arranged at the bottom of the clamping block 51, and the winding module is used to cooperate with the rope assembly 4 for winding.

[0037] The testing module includes a first testing block 61. A first pressure sensing groove 611 is formed on the upper end surface of the first testing block 61. A second testing block 62 is slidably arranged in the first pressure sensing groove 611. The sliding direction of the second testing block 62 is perpendicular to the opening direction of the clamping groove 511. The upper end surface of the second testing block 62 is flush with or slightly higher than the end surface at the bottom of the clamping groove 511. A second pressure sensing groove 63 that slidably cooperates with the first testing block 61 is formed on the clamping block 51. The sliding direction of the first testing block 61 is the same as the opening direction of the clamping groove 511, that is, the sliding direction of the second testing block 62 is perpendicular to the sliding direction of the first testing block 61.

[0038] Based on the above structure, the following is a supplementary description: A friction block 621 is arranged on the upper end surface of the second testing block 62, and the friction block 621 is used to increase the contact friction force. The first pressure sensing groove 611 and the second pressure sensing groove 63 are respectively used to detect the moving states of the second testing block 62 and the first testing block 61. According to the moving state of the first testing block 61, it can be judged whether the limiting module is locked in place. According to the moving state of the second testing block 62, it can be judged whether the clamping block 51 slides. Optionally, pressure sensors are respectively laid on the corresponding groove surfaces of the first pressure sensing groove 611 and the second pressure sensing groove 63 for detecting the pressure signals from the second testing block 62 and the first testing block 61.

[0039] In one embodiment, as Figure 4As shown, on both sides of the test block 61 along its sliding direction, impact blocks 612 are connected. The second pressure sensing groove 63 is divided into a sliding groove and a sensing groove. The test block 61 moves within the sliding groove, and the sensing groove is provided with a pressure sensing unit in cooperation with the impact block 612, and the impact block 612 moves within the sensing groove. When the test block 61 moves, the corresponding impact block 612 impacts the inner surface of the sensing groove, and the pressure sensing unit detects the corresponding pressure.

[0040] In one embodiment, as Figure 3 shown, the limiting module includes a first screw rod 71, a first gear 72, a limiting plate 73, a second gear 74, and a first motor 75. One end of the first screw rod 71 passes through the top of the clamping block 51 to the clamping groove 511 and is rotatably connected to the limiting plate 73. The first screw rod 71 is in threaded cooperation with the clamping block 51. The first gear 72 is threadedly connected to the first screw rod 71 and is rotatably connected to the corresponding surface of the clamping block 51, so that when the first screw rod 71 moves up and down, the first gear 72 only rotates and does not move up and down. The second gear 74 meshes with the first gear 72, and the driving end of the first motor 75 is connected to the second gear 74 to drive the second gear 74 to rotate. The first motor 75 is supported and fixed by a bracket installed on the clamping block 51, and the bracket is not shown in the figure. Specifically, as Figure 5 shown, a limiting block 721 is connected to the lower end of the first gear 72. The limiting block 721 is of an annular structure, and the clamping block 51 is provided with a corresponding rotating groove in cooperation with the limiting block 721. When the first gear 72 rotates, the limiting block 721 rotates within the rotating groove, and at the same time, the limiting block 721 is restricted within the rotating groove, thereby restricting the up and down movement of the first gear 72.

[0041] In actual operation, a receiving groove for accommodating the limiting plate 73 is provided on the end surface at the top of the clamping groove 511. When the first motor 75 is started to control the second gear 74 to rotate, the first gear 72 rotates accordingly and drives the first screw rod 71 to rotate, thereby driving the first screw rod 71 to move downward to push the limiting plate 73 downward, and fixing the clamping block 51 at the corresponding position of the pantograph 1.

[0042] In one embodiment, as Figure 6 and Figure 7 shown, the winding module includes an extension block 81, two sliding frames 82, a first rotating rod 83, a third gear 84, a fourth gear 85, and a second motor 86. The extension block 81 is fixed to the bottom of the clamping block 51 and is flush with the two sides of the clamping block 51. The two sliding frames 82 are respectively arranged on the left and right sides of the extension block 81. The first rotating rod 83 passes through the two sliding frames 82 and both ends respectively pass through the two sliding frames 82. The third gear 84 is fixedly sleeved on the first rotating rod 83. The fourth gear 85 meshes with the third gear 84. The driving end of the second motor 86 is connected to the fourth gear 85 to drive the fourth gear 85 to rotate. The second motor 86 is supported and fixed by a bracket installed on one sliding frame 82, and the bracket is not shown in the figure.

[0043] Further, two slideways 512 are respectively formed on the left and right sides of the extension block 81 and the clamping block 51 in cooperation with the corresponding slide frames 82. A moving channel 513 penetrating through the left and right is formed on the extension block 81 and the clamping block 51 between the two slideways 512. A connecting block 831 is sleeved on the first rotating rod 83 between the two slide frames 82. In this embodiment, the moving channel 513 penetrates through the bottom of the extension block 81. Therefore, a sealing plate 811 is fixed to the bottom of the extension block 81. An electric push rod 812 is fixed to the sealing plate 811. The telescopic end of the electric push rod 812 is connected to the connecting block 831 to push the first rotating rod 83 to move up and down along the moving channel 513.

[0044] In one embodiment, a rotation induction sensor is arranged in the connecting block 831 for detecting the rotation state of the first rotating rod 83. Optionally, the rotation induction sensor adopts a rotational speed sensor, such as the A3144 type rotational speed sensor that measures the rotational speed through the Hall effect.

[0045] In actual operation, the second motor 86 controls the rotation of the fourth gear 85, and then drives the third gear 84 to rotate, so as to realize the rotation of the first rotating rod 83; the electric push rod 812 is used to push the first rotating rod 83 to move up and down along the moving channel 513, so as to realize approaching or departing from the clamping groove 511.

[0046] As Figure 1 shown, the rope assembly 4 includes a main pull rope 41, a connecting seat 42 and two branch pull ropes 43. One end of the main pull rope 41 is fixedly connected to the connecting seat 42, and the other end of the main pull rope 41 is set as a loop structure for connecting with the tension sensor 3. One ends of the two branch pull ropes 43 are respectively connected to the connecting seat 42, and the other ends of the two branch pull ropes 43 are set as loop structures for connecting with the two ends of the first rotating rod 83.

[0047] As Figures 8 - 10 shown, the fixing mechanism 2 includes a fixing seat 21, four second screws 22, four motor pulley sets 23 and two pressing plates 24. The four second screws 22 are rotatably arranged at the four corners of the fixing seat 21. The four motor pulley sets 23 are respectively connected to the corresponding second screws 22. Each pressing plate 24 is sleeved on the two second screws 22 on the same side and is in threaded cooperation with them.

[0048] Further, a long groove 211 is formed on the upper end surface of the fixing base 21. Two guiding wheels 25 are arranged in the long groove 211. A guiding channel 251 is formed in each guiding wheel 25. Two intermediate wheels 26 and two connecting ropes 27 are further arranged on the fixing base 21. One end of a connecting rope 27 is fixedly connected to one of the second screws 22. The other end of the connecting rope 27 sequentially passes through the corresponding intermediate wheel 26 and guiding wheel 25 and then is connected to an inner limiting plate 28. A spring 29 is connected between the inner limiting plate 28 and the long groove 211. When the spring 29 is in a stretched state, the connecting rope 27 pulls the inner limiting plate 28 to separate from the control position of the pantograph 1, and the inner limiting plate 28 does not limit the pantograph 1. When the spring 29 is in a natural contracted state, the spring 29 pulls the inner limiting plate 28 to approach the control position of the pantograph 1, and the inner limiting plate 28 limits the pantograph 1.

[0049] As Figure 11 shown, the pantograph 1 includes a chassis 11, a lower arm rod 12, an upper frame 13 and a bow head 14. One end of the lower arm rod 12 is hinged to the chassis 11, the other end of the lower arm rod 12 is hinged to the upper frame 13, and the bow head 14 is arranged on the upper frame 13. It should be added that: the testing mechanism is connected to the upper frame 13, the fixing mechanism 2 is used to fix the chassis 11, and the rising and falling of the bow head 14 are realized by adjusting the angle between the lower arm rod 12 and the upper frame 13.

[0050] The supplementary description based on the above structure is as follows: A corresponding channel is formed in the fixing base 21 to cooperate with the connecting rope 27. The inner limiting plate 28 is of an L-shaped structure. The inner limiting plate 28 includes a connecting part slidably matched with the long groove 211 and a limiting part for fixing the chassis 11. A hook is arranged on the top surface of one of the inner limiting plates 28 for connecting with the tension sensor 3. In actual operation, the inner limiting plate 28 is pulled by the spring 29 to approach one end of the long groove 211. When the corresponding second screw 22 starts to rotate, the winding and unwinding effects of the connecting rope 27 are realized according to different rotation directions, and finally the movement of the inner limiting plate 28 is realized.

[0051] Specifically, when the motor pulley set 23 drives the second screw 22 to rotate and drives the corresponding pressing plate 24 to move downward, at this time, the connecting rope 27 is in an unwinding state, and the inner limiting plate 28 is pulled by the spring 29. The spring 29 is in a natural contracted state. At this time, the pressing plate 24 presses a set of opposite sides of the chassis 11, and the connecting part of the inner limiting plate 28 slides outward, so that the end surface of the limiting part abuts against the other set of opposite sides of the chassis 11, playing a role in limiting the pantograph 1 in four directions; when the motor pulley set 23 drives the second screw 22 to rotate and drives the corresponding pressing plate 24 to move upward, at this time, the connecting rope 27 is in a winding state, and the inner limiting plate 28 is pulled by the connecting rope 27. The spring 29 is in a stretched state. At this time, the pressing plate 24 and the inner limiting plate 28 simultaneously release the limit on the pantograph 1.

[0052] The specific implementation method is as follows:

[0053] Step 1: The staff places the pantograph 1 on the fixing seat 21, and the fixing mechanism 2 limits the position of the base frame 11;

[0054] Step 2: The staff adjusts the pantograph 1 to the pantograph lowering state, and connects the tension sensor 3, the rope assembly 4 and the locking assembly 5;

[0055] Step 3: The staff inserts the card block 51 into the corresponding position of the upper frame 13, operates the handheld controller, controls the limit module to limit and fix the card block 51, manually shakes the card block 51, and determines whether the limit module is in place according to the feedback of the test module;

[0056] Step 4: After the block 51 is fixed, the handheld controller is operated to control the winding module to wind up the excess length of the branch rope 43, and it is determined whether the branch rope 43 is rolled up in place according to the rotation state of the rotating rod 83;

[0057] Step 5: After preparation, the initial tension value transmitted by the tension sensor 3 is cleared;

[0058] Step 6: The pantograph 1 starts to raise, and the tension sensor 3 detects the corresponding tension and feeds it back to the handheld controller for collection.

[0059] Specifically, in step three, the block 51 is manually shaken mainly in the opening direction of the engaging groove 511 to detect whether the engaging between the block 51 and the upper frame 13 is stable, so as to prevent the block 51 from being separated from the upper frame 13 during the test.

[0060] When the clamping block 51 is firmly connected to the upper frame 13, the test block 1 61 will not be displaced under external force, and the impact block 612 will not generate a back-and-forth impact force on the sensing slot; if during the shaking process, the handheld controller displays that the pressure sensing slot 2 63 detects a continuous force signal, it means that the limit module is not in place and the limit force should be increased.

[0061] In step 4, during the winding process of rotating rod 1 83, connecting block 831 can detect the force signal caused by the rotation of rotating rod 1 83. If the winding is completed, rotating rod 1 83 is restricted and cannot continue to rotate. Connecting block 831 can detect the force signal different from the rotation state. At this time, motor 2 86 stops and the winding is completed.

[0062] Furthermore, if during the winding process, the clamping block 51 slips due to the winding movement on both sides, the test block 2 62 detects the corresponding movement signal. At this time, the electric push rod 812 drives the rotating rod 1 83 to move to the upper part or top of the moving channel 513, so that the branch pull rope 43 moves to both sides of the clamping groove 511, and the branch pull rope 43 with a certain thickness after winding is used to press against the lower side of the upper frame 13, thereby enhancing the limiting effect.

[0063] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intelligent handheld pantograph tension tester, comprising a fixing mechanism (2) for fixing a pantograph (1) and a testing mechanism for testing the tension of the pantograph (1), characterized in that: The test mechanism comprises a tension sensor (3), a rope assembly (4), a locking assembly (5) and a handheld controller, wherein one end of the tension sensor (3) is connected to the fixing mechanism (2), the other end of the tension sensor (3) is connected to the rope assembly (4), the locking assembly (5) is connected to the pantograph (1) and the rope assembly (4) respectively, and the handheld controller is manually controlled and is used to control the tension test process of the pantograph (1); The locking assembly (5) comprises a clamping block (51), a clamping groove (511) being provided on one side of the clamping block (51), a limiting module being provided on the clamping block (51) at the top of the clamping groove (511), the limiting module being used to lock the locking assembly (5) as a whole at a corresponding position of the pantograph (1), a testing module being provided on the clamping block (51) at the bottom of the clamping groove (511), the testing module being used to test the locking state, and a reeling module being provided at the bottom of the clamping block (51), the reeling module being used to cooperate with the rope assembly (4) to reel; The test module comprises a test block 1 (61), a pressure sensing groove 1 (611) is provided on the upper end surface of the test block 1 (61), a test block 2 (62) is slidably arranged in the pressure sensing groove 1 (611), and the upper end surface of the test block 2 (62) is flush with the end surface at the bottom of the clamping groove (511) or slightly higher than the end surface at the bottom of the clamping groove (511); and a pressure sensing groove 2 (63) is provided on the clamping block (51) to slidably cooperate with the test block 1 (61).

2. The intelligent handheld pantograph tension tester according to claim 1 is characterized in that: The sliding direction of the test block 1 (61) is consistent with the opening direction of the clamping groove (511), and the sliding direction of the test block 2 (62) is perpendicular to the sliding direction of the test block 1 (61); The pressure sensing groove 1 (611) and the pressure sensing groove 2 (63) are used to detect the movement status of the test block 2 (62) and the test block 1 (61) respectively, and judge whether the limit module is locked in place according to the movement status of the test block 1 (61), and judge whether the locking block (51) is slipping according to the movement status of the test block 2 (62).

3. The intelligent handheld pantograph tension tester according to claim 2 is characterized in that: The test block 1 (61) is connected to an impact block (612) along its sliding direction, and the pressure sensing groove 2 (63) is divided into a sliding groove and a sensing groove, wherein the test block 1 (61) moves in the sliding groove, the sensing groove is arranged to cooperate with the impact block (612), and the impact block (612) moves in the sensing groove; when the test block 1 (61) moves, the corresponding impact block impacts the inner surface of the sensing groove, and the corresponding pressure is detected.

4. The intelligent handheld pantograph tension tester according to claim 1 is characterized in that: The limiting module comprises a screw rod 1 (71), a gear rod 1 (72), a limiting plate (73), a gear rod 2 (74) and a motor 1 (75), wherein one end of the screw rod 1 (71) passes through the top of the clamping block (51) to the clamping groove (511) and is rotatably connected to the limiting plate (73), the screw rod 1 (71) is threadedly matched with the clamping block (51), the gear rod 1 (72) is threadedly connected to the screw rod 1 (71) and is rotatably connected to the corresponding surface of the clamping block (51), the gear rod 2 (74) is meshed with the gear rod 1 (72), and the driving end of the motor 1 (75) is connected to the gear rod 2 (74).

5. The intelligent handheld pantograph tension tester according to claim 1 is characterized in that: The winding module comprises an extension block (81), two slides (82), a rotating rod one (83), a gear three (84), a gear four (85) and a motor two (86), wherein the extension block (81) is fixed to the bottom of the clamping block (51) and its left and right sides are flush with the two sides of the clamping block (51), the two slides (82) are respectively arranged on the left and right sides of the extension block (81), the rotating rod one (83) is passed through the two slides (82) and its two ends respectively pass through the two slides (82), the gear three (84) is fixedly sleeved on the rotating rod one (83), the gear four (85) is meshed with the gear three (84), and the driving end of the motor two (86) is connected to the gear four (85).

6. The intelligent handheld pantograph tension tester according to claim 5 is characterized in that: The extension block (81) and the clamping block (51) are provided with two slideways (512) on the left and right sides respectively cooperating with the corresponding slideways (82); a left-right through-moving channel (513) is provided on the extension block (81) and the clamping block (51) between the two slideways (512); a connecting block (831) is sleeved on the rotating rod (83) between the two slideways (82); an electric push rod (812) is fixed to the bottom of the extension block (81); a driving end of the electric push rod (812) is connected to the connecting block (831) to push the rotating rod (83) to move up and down along the moving channel (513).

7. The intelligent handheld pantograph tension tester according to claim 6 is characterized in that: A rotation sensing sensor is provided in the connection block (831) for detecting the rotation state of the rotating rod 1 (83).

8. The intelligent handheld pantograph tension tester according to claim 5 is characterized in that: The rope assembly (4) comprises a main pull rope (41), a connecting seat (42) and two branch pull ropes (43), wherein one end of the main pull rope (41) is fixedly connected to the connecting seat (42), the other end of the main pull rope (41) is arranged as a ring structure for connecting to the tension sensor (3), one end of the two branch pull ropes (43) are respectively connected to the connecting seat (42), and the other end of the two branch pull ropes (43) are arranged as a ring structure for connecting to the two ends of the rotating rod (83).

9. The intelligent handheld pantograph tension tester according to claim 1 is characterized in that: The fixing mechanism (2) comprises a fixing seat (21), four screw rods (22), four motor pulley groups (23) and two pressure plates (24), wherein the four screw rods (22) are rotatably arranged at four corners of the fixing seat (21), the four motor pulley groups (23) are respectively connected to the corresponding screw rods (22), and each pressure plate (24) is passed through two screw rods (22) on the same side and threadedly matched therewith.

10. The intelligent handheld pantograph tension tester according to claim 9, characterized in that: A long slot (211) is provided on the upper end surface of the fixing seat (21), two guide wheels (25) are provided in the long slot (211), and a guide channel (251) is provided in the guide wheel (25). The fixing seat (21) is also provided with two intermediate wheels (26) and two connecting ropes (27), wherein one end of the connecting rope (27) is fixedly connected to one of the second screw rods (22), and the other end of the connecting rope (27) passes through the corresponding intermediate wheel (26) and the guide wheel (25) in sequence and is then connected to an inner limit plate (28). A spring (29) is connected between the inner limit plate (28) and the long slot (211), and when the spring (29) is in a stretched state, the inner limit plate (28) does not limit the pantograph (1), and when the spring (29) is in a naturally contracted state, the inner limit plate (28) limits the pantograph (1).

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