Intelligent handheld pantograph tension tester

Abstract

The invention discloses an intelligent handheld pantograph tension tester which comprises a fixing mechanism used for fixing a pantograph and a testing mechanism used for testing the tension of the pantograph, the testing mechanism comprises a tension sensor, a rope assembly, a locking assembly and a handheld controller, one end of the tension sensor is connected with the fixing mechanism, and the other end of the tension sensor is connected with the rope assembly. The other end of the tension sensor is connected with the rope assembly, the locking assembly is connected with the pantograph and the rope assembly, and the handheld controller is used for controlling the pantograph tension testing process. The locking assembly comprises a clamping block, a clamping groove is formed in one side of the clamping block, a limiting module is arranged on the part, located at the top of the clamping groove, of the clamping block, the limiting module is used for locking the whole locking assembly to the corresponding position of the pantograph, a testing module is arranged on the part, located at the bottom of the clamping groove, of the clamping block, and the testing module is used for testing the locking state. A winding module is arranged at the bottom of the clamping block and used for being matched with the rope assembly for winding. The accuracy in the pantograph tension detection process is improved.

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] In order to solve the above technical problems, the present invention provides the following technical solutions: an intelligent handheld pantograph tension tester, comprising a fixing mechanism for fixing the pantograph and a testing mechanism for testing the tension of the pantograph, the testing mechanism comprising 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, 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, and the handheld controller is manually controlled and is used to control the pantograph tension test process.

[0007] According to the above technical solution, the locking assembly includes a card block, a card slot is provided on one side of the card block, a limit module is arranged on the card block at the top of the card slot, the limit module is used to lock the locking assembly as a whole at the corresponding position of the pantograph, a test module is arranged on the card block at the bottom of the card slot, the test module is used to test the locking state, and a winding module is arranged at the bottom of the card block, the winding module is used to cooperate with the rope assembly to wind up.

[0008] According to the above technical solution, the test module includes a test block 1, a pressure sensing groove 1 is provided on the upper end surface of the test block 1, a test block 2 is slidably arranged in the pressure sensing groove 1, the sliding direction of the test block 2 is perpendicular to the opening direction of the clamping groove, the upper end surface of the test block 2 is flush with the end surface at the bottom of the clamping groove or slightly higher than the end surface at the bottom of the clamping groove; a pressure sensing groove 2 is provided on the clamping block, which slides with the test block 1, and the sliding direction of the test block 1 is consistent with the opening direction of the clamping groove.

[0009] According to the above technical solution, the test block 1 is connected with impact blocks on both sides along its sliding direction, and the pressure sensing groove is divided into a sliding groove and a sensing groove, wherein the test block 1 moves in the sliding groove, and the sensing groove is provided in conjunction with the impact block, and the impact block moves in the sensing groove; when the test block 1 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 limit module includes screw 1, gear 1, limit plate, gear 2 and motor 1, wherein one end of screw 1 passes through the top of the clamping block into the clamping groove and is rotatably connected to the limit plate, screw 1 is threadedly matched with the clamping block, gear 1 is threadedly connected to screw 1 and is rotatably connected to the corresponding surface of the clamping block, gear 2 is meshed with gear 1, and the driving end of motor 1 is connected to gear 2.

[0011] According to the above technical solution, the winding module includes an extension block, two slides, a rotating rod one, gear three, gear four and motor two, wherein the extension block is fixed at the bottom of the card block and the left and right sides are flush with the two sides of the card block, the two slides are respectively arranged on the left and right sides of the extension block, the rotating rod one is passed through the two slides and the two ends are respectively passed through the two slides, the gear three is fixedly sleeved on the rotating rod one, the gear four is meshed with the gear three, and the driving end of the motor two is connected to the gear four.

[0012] According to the above technical solution, two slideways are respectively provided on the left and right sides of the extension block and the clamping block to cooperate with the corresponding slides, and a moving channel that runs through the left and right is provided on the extension block and the clamping block between the two slides. A connecting block is sleeved on the rotating rod 1 between the two slides, and an electric push rod is fixed to the bottom of the extension block. The driving end of the electric push rod is connected to the connecting block to push the rotating rod 1 to move up and down along the moving channel.

[0013] According to the above technical solution, a rotation sensing sensor is arranged in the connecting block to detect the rotation state of the rotating rod 1.

[0014] According to the above technical solution, the rope assembly includes a main pull rope, a connecting seat and two branch pull ropes, wherein 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 ring structure for connecting to the tension sensor, one end of the two branch pull ropes are respectively connected to the connecting seat, and the other end of the two branch pull ropes are set as a ring structure for connecting to one or two ends of the rotating rod.

[0015] According to the above technical solution, the fixing mechanism includes a fixing seat, four screw rods 2, four motor pulley groups and two pressure plates, wherein the four screw rods 2 are rotatably arranged on the four corners of the fixing seat, the four motor pulley groups are respectively connected to the corresponding screw rods 2, and each pressure plate is passed through the two screw rods 2 on the same side and threadedly matched therewith.

[0016] According to the above technical solution, a long groove is provided on the upper end surface of the fixed seat, two guide wheels are provided in the long groove, a guide channel is provided in the guide wheel, and two intermediate wheels and two connecting ropes are also provided on the fixed seat, wherein one end of a connecting rope is fixedly connected to one of the screw rods, and the other end of the connecting rope passes through the corresponding intermediate wheel and the guide wheel in sequence and is connected to an inner limit plate, a spring is connected between the inner limit plate and the long groove, when the spring is in a stretched state, the pantograph is not limited, and when the spring is in a free state, the pantograph is limited.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are: The present invention is provided with a test module, wherein the first test block can judge whether the upper and lower locking of the card block is in place according to the detected force signal, thereby determining whether the clamping connection between the card block and the pantograph is firm, thereby avoiding the situation where the card block is detached during the test; the second test block can judge whether the card block will slip during the test according to the detected force signal, and at the same time, the two sides of the card block can be limited in position in combination with the reeled pull rope, thereby improving the accuracy of the test; by providing a fixing mechanism, the pantograph chassis can be fixed in two directions at the same time, making the fixation more firm and highly flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the specific embodiments. Obviously, the drawings described below are some specific embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 is a schematic diagram of the structure of a card block provided in an embodiment of the present invention; Figure 3 is a partial cross-sectional view of a card block provided by an embodiment of the present invention; Figure 4 yes Figure 3 A magnified schematic diagram of area A; Figure 5 This is a schematic diagram of the structure of the gear 1 and the block provided in an embodiment of the present invention; Figure 6 is a structural schematic diagram of a winding module provided in an embodiment of the present invention; Figure 7 yes Figure 6 A magnified schematic diagram of area B; Figure 8 is a structural schematic diagram of a fixing mechanism provided by an embodiment of the present invention; Fig. 9 is a partial cross-sectional view of a fixing mechanism provided by an embodiment of the present invention; Fig.10 is a schematic diagram of the connection structure of the connection rope provided in an embodiment of the present invention; Fig.11 It is a schematic diagram of the structure of a pantograph provided in an embodiment of the present invention.

[0020] In the figure: 1, pantograph; 11, chassis; 12, lower arm; 13, upper frame; 14, bow head; 2, fixing mechanism; 21, fixing seat; 211, long slot; 22, screw rod 2; 23, motor pulley assembly; 24, pressure plate; 25, guide wheel; 251, guide channel; 26, intermediate wheel; 27, connecting rope; 28, inner limit plate; 29, spring; 3, tension sensor; 4, rope assembly; 41, main pull rope; 42, connecting seat; 43, branch pull rope; 5, locking assembly; 51, clamping block; 511, clamping slot; 512, slideway; 513, moving channel; 61, test block one; 611, pressure sensing slot one; 612, impact block; 62, test block two; 621, friction block; 63, pressure sensing slot two; 71, screw one; 72, gear one; 721, limit block; 73, limit plate; 74, gear two; 75, motor one; 81, extension block; 811, sealing plate; 812, electric push rod; 82, slide; 83, rotating rod one; 831, connecting block; 84, gear three; 85, gear four; 86, motor two. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1-Figure 11An embodiment of the present invention provides an intelligent handheld pantograph tension tester, including a fixing mechanism 2 for fixing a pantograph 1 and a testing mechanism for testing the tension of the pantograph 1, wherein 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, and the handheld controller is manually controlled and is used to control the tension test process of the pantograph 1.

[0025] The locking assembly 5 includes a clamping block 51, a clamping groove 511 is provided on one side of the clamping block 51, a limiting module is arranged on the clamping block 51 located at the top of the clamping groove 511, and the limiting module is used to lock the locking assembly 5 as a whole at the corresponding position of the pantograph 1, and a testing module is arranged on the clamping block 51 located at the bottom of the clamping groove 511 (i.e., the groove surface opposite to the limiting module), and the testing module is used to test the locking state, and 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.

[0026] The test module includes a test block 61, a pressure sensing groove 611 is provided on the upper end surface of the test block 61, a test block 62 is slidably arranged in the pressure sensing groove 611, the sliding direction of the test block 62 is perpendicular to the opening direction of the snap-in groove 511, the upper end surface of the test block 62 is flush with the end surface at the bottom of the snap-in groove 511 or slightly higher than the end surface at the bottom of the snap-in groove 511; a pressure sensing groove 63 slidably matched with the test block 61 is provided on the snap-in block 51, the sliding direction of the test block 61 is consistent with the opening direction of the snap-in groove 511, that is, the sliding direction of the test block 62 is perpendicular to the sliding direction of the test block 61.

[0027] The supplementary explanation based on the above structure is as follows: the upper end surface of the test block 2 62 is provided with a friction block 621, which is used to increase the contact friction force; the pressure sensing slot 1 611 and the pressure sensing slot 2 63 are used to detect the moving state of the test block 2 62 and the test block 1 61 respectively, and it can be judged whether the limit module is locked in place according to the moving state of the test block 1 61, and it can be judged whether the block 51 slips according to the moving state of the test block 2 62. Optionally, the corresponding slot surfaces of the pressure sensing slot 1 611 and the pressure sensing slot 2 63 are respectively paved with pressure sensors for detecting the pressure signals from the test block 2 62 and the test block 1 61.

[0028] In one embodiment, Figure 4As shown, the test block 1 61 is connected with impact blocks 612 on both sides 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, and the sensing groove is provided with a pressure sensing unit in conjunction 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 612 hits the inner surface of the sensing groove, and the pressure sensing unit detects the corresponding pressure.

[0029] In one embodiment, Figure 3 As shown, the limit module includes a screw rod 71, a gear 72, a limit plate 73, a gear 74 and a motor 75, wherein one end of the screw rod 71 passes through the top of the block 51 to the clamping groove 511 and is rotatably connected to the limit plate 73, the screw rod 71 is threadedly matched with the block 51, the gear 72 is threadedly connected to the screw rod 71 and is rotatably connected to the corresponding surface of the block 51, so that when the screw rod 71 moves up and down, the gear 72 only rotates but does not move up and down, the gear 74 meshes with the gear 72, the driving end of the motor 75 is connected to the gear 74, driving the gear 74 to rotate, and the motor 75 is supported and fixed by a bracket installed on the block 51, and the bracket is not shown in the figure. Specifically, Figure 5 As shown, the lower end of gear 1 72 is connected to a limit block 721, which is a ring structure. The clamping block 51 cooperates with the limit block 721 to form a corresponding rotation groove. When gear 1 72 rotates, the limit block 721 rotates in the rotation groove, and the limit block 721 is restricted in the rotation groove, thereby limiting the up and down movement of gear 1 72.

[0030] In actual operation, a accommodating groove for accommodating the limit plate 73 is opened on the end face at the top of the clamping groove 511, and the motor 75 starts to control the gear 2 74 to rotate, and the gear 1 72 rotates accordingly and drives the screw 1 71 to rotate, thereby driving the screw 1 71 to move downward and push the limit plate 73 to move downward, thereby fixing the clamping block 51 at the corresponding position of the pantograph 1.

[0031] In one embodiment, Figure 6 and Figure 7 As shown, the winding module includes an extension block 81, two slides 82, a rotating rod 1 83, a gear 3 84, a gear 4 85 and a motor 2 86, wherein the extension block 81 is fixed to the bottom of the block 51 and the left and right sides are flush with the two sides of the block 51, the two slides 82 are respectively arranged on the left and right sides of the extension block 81, the rotating rod 1 83 is passed through the two slides 82 and the two ends respectively pass through the two slides 82, the gear 3 84 is fixedly sleeved on the rotating rod 1 83, the gear 4 85 is meshed with the gear 3 84, the driving end of the motor 2 86 is connected to the gear 4 85, driving the gear 4 85 to rotate, and the motor 2 86 is supported and fixed by a bracket installed on a slide 82, and the bracket is not shown in the figure.

[0032] Furthermore, two slideways 512 are respectively provided on the left and right sides of the extension block 81 and the clamping block 51 to cooperate with the corresponding slides 82, and a moving channel 513 that runs through the left and right is provided on the extension block 81 and the clamping block 51 between the two slideways 512, and a connecting block 831 is sleeved on the rotating rod 83 between the two slides 82. In this embodiment, the moving channel 513 runs through the bottom of the extension block 81, so a sealing plate 811 is fixed to the bottom of the extension block 81, and an electric push rod 812 is fixed on the sealing plate 811. The telescopic end of the electric push rod 812 is connected to the connecting block 831, which pushes the rotating rod 83 to move up and down along the moving channel 513.

[0033] In one embodiment, a rotation sensing sensor is disposed in the connection block 831 to detect the rotation state of the rotating rod 83. Optionally, the rotation sensing sensor is a rotation speed sensor, such as an A3144 type rotation speed sensor that measures the rotation speed through the Hall effect.

[0034] In actual operation, motor 2 86 controls gear 4 85 to rotate and then drives gear 3 84 to rotate, thereby realizing the rotation of rotating rod 1 83; the electric push rod 812 is used to push the rotating rod 1 83 to move up and down along the moving channel 513, thereby realizing approaching or moving away from the clamping groove 511.

[0035] like Figure 1 As shown, the rope assembly 4 includes 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, and the other end of the main pull rope 41 is set 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 is set as a ring structure for connecting to the two ends of the rotating rod 83.

[0036] like Figure 8 to Figure 10 As shown, the fixing mechanism 2 includes 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 on the 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 the two screw rods 22 on the same side and threadedly matched therewith.

[0037] Furthermore, a long groove 211 is provided on the upper end surface of the fixed seat 21, and two guide wheels 25 are provided in the long groove 211. A guide channel 251 is provided in the guide wheel 25. Two intermediate wheels 26 and two connecting ropes 27 are also provided on the fixed seat 21. One end of a connecting rope 27 is fixedly connected to one of the 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 connected to an inner limit plate 28. A spring 29 is connected between the inner limit plate 28 and the long groove 211. When the spring 29 is in a stretched state, the connecting rope 27 pulls the inner limit plate 28 to separate from the control position of the pantograph 1, and the inner limit plate 28 does not limit the pantograph 1. When the spring 29 is in a naturally contracted state, the spring 29 pulls the inner limit plate 28 close to the control position of the pantograph 1, and the inner limit plate 28 limits the pantograph 1.

[0038] like Fig.11 As shown, the pantograph 1 includes a base frame 11, a lower arm 12, an upper frame 13 and a pantograph 14, wherein one end of the lower arm 12 is hinged on the base frame 11, the other end of the lower arm 12 is hinged on the upper frame 13, and the pantograph 14 is arranged on the upper frame 13. It should be supplemented that: the test mechanism is connected to the upper frame 13, the fixing mechanism 2 is used to fix the base frame 11, and the rise and fall of the pantograph 14 is achieved by adjusting the angle between the lower arm 12 and the upper frame 13.

[0039] The supplementary explanation based on the above structure is as follows: a corresponding channel is provided in the fixing seat 21 to cooperate with the connecting rope 27, the inner limit plate 28 is in an L-shaped structure, and the inner limit plate 28 includes a connecting portion that slides with the long slot 211 and a limiting portion for fixing the base frame 11, and a hook is provided on the top surface of one of the inner limit plates 28 for connecting with the tension sensor 3. In actual operation, the inner limit plate 28 is pulled by the spring 29 to approach one end of the long slot 211, and when the corresponding screw rod 22 starts to rotate, the winding and unwinding effects of the connecting rope 27 are realized according to the different rotation directions, and finally the movement of the inner limit plate 28 is realized.

[0040] Specifically, when the motor pulley group 23 drives the screw rod 22 to rotate and drive the corresponding pressure plate 24 to move downward, the connecting rope 27 is in an unwinding state, and the inner limit plate 28 is pulled by the spring 29, and the spring 29 is in a naturally contracted state. At this time, the pressure plate 24 presses a group of relative side edges of the base frame 11, and the connecting part of the inner limit plate 28 slides outward, so that the end face of the limiting part abuts against another group of relative side edges of the base frame 11, thereby limiting the pantograph 1 in four directions; when the motor pulley group 23 drives the screw rod 22 to rotate and drive the corresponding pressure plate 24 to move upward, the connecting rope 27 is in a reeling state, and the inner limit plate 28 is pulled by the connecting rope 27, and the spring 29 is in a stretched state. At this time, the pressure plate 24 and the inner limit plate 28 simultaneously release the limit on the pantograph 1.

[0041] The specific implementation methods are as follows: 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; 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; 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; 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; Step 5: After preparation, the initial tension value transmitted by the tension sensor 3 is cleared; 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in 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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