Inhaul cable resistance detection mechanism

Abstract

The invention provides an inhaul cable resistance detection mechanism, and belongs to the technical field of inhaul cable performance test.The inhaul cable resistance detection mechanism comprises a workbench, a tensioning roller set and an adjusting and testing assembly, the workbench comprises a tensioning table top and a force applying table top which are arranged in sequence, and the tensioning roller set is located on the tensioning table top between a first driving structure and a second driving structure; the tensioning roller set is provided with a plurality of horizontal roller sets, each horizontal roller set comprises a first guide roller and a second guide roller, a gap allowing the inhaul cable to pass through is formed between the first guide roller and the second guide roller, and the horizontal roller sets are matched to position the distribution track of the inhaul cable on the tensioning table top. According to the inhaul cable resistance detection mechanism provided by the invention, the inhaul cable is arranged on the tensioning table surface in a bent state through the plurality of horizontal roller groups, and the track of the inhaul cable is changed by virtue of the cooperation of the first guide roller and the second guide roller so as to fit the bent state of the inhaul cable in an actual working state and carry out dynamic simulation in an actual working condition; and the resistance detection precision and detection efficiency of the inhaul cable are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of cable performance testing, and more specifically, relates to a cable resistance detection mechanism. Background Art

[0002] Cables for motorcycles, electric bicycles, etc. are generally relatively long. During installation, the cable is supported and limited by two cable limit blocks. The middle section of the cable is between the two cable limit blocks, and the first functional section and the second functional section are respectively between the two cable limit blocks and the adjacent cable connectors. The total length of the cable consists of the first functional section, the middle section of the cable, and the second functional section.

[0003] The detection items of conventional cables include length detection, pulling stroke detection, tensile detection, etc. Especially for the measurement of the tensile resistance of the two cable connectors, manual operation is mostly used and combined with a tensiometer to complete the measurement, resulting in low detection efficiency and low measurement accuracy; and in the detection items, only the lengths of the first functional section and the second functional section are considered, and the middle section of the cable is only linearly tensioned, with insufficient dynamic simulation ability, making it difficult to accurately simulate the complex bending state of the cable during riding. Summary of the Invention

[0004] The purpose of the present invention is to provide a cable resistance detection mechanism, aiming to solve the problems of insufficient dynamic simulation ability and low detection efficiency.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: providing a cable resistance detection mechanism, including a workbench, a tensioning roller group, and an adjustment and testing component. The workbench includes a tensioning tabletop and a force-applying tabletop arranged in sequence. The adjustment and testing component includes a first set of driving structures located on the force-applying tabletop and a second set of driving structures located on the tensioning tabletop. The first set of driving structures and the second set of driving structures are respectively connected to the two ends of the cable; the tensioning roller group is located on the tensioning tabletop between the first set of driving structures and the second set of driving structures. The tensioning roller group has multiple sets of horizontal roller groups, and each set of horizontal roller groups includes a first guiding roller and a second guiding roller. There is a gap for the cable to pass through between the first guiding roller and the second guiding roller, and multiple sets of horizontal roller groups cooperate to position the distribution trajectory of the cable on the tensioning tabletop.

[0006] As another embodiment of the present application, both the first guiding roller and the second guiding roller have multiple guiding grooves arranged longitudinally at intervals, and the inner diameters of the multiple guiding grooves decrease sequentially from top to bottom or from bottom to top, and the guiding grooves are used to fit the cable.

[0007] As another embodiment of the present application, the inner diameters of the multiple guiding grooves of the first guiding roller gradually increase from top to bottom, and the inner diameters of the multiple guiding grooves of the second guiding roller gradually decrease from top to bottom; Alternatively, the inner diameters of the plurality of guiding grooves of the first guiding roller gradually decrease from top to bottom, and the inner diameters of the plurality of guiding grooves of the second guiding roller gradually increase from top to bottom.

[0008] As another embodiment of the present application, the first guiding roller has a degree of freedom to move horizontally, and the second guiding roller has a degree of freedom to move longitudinally; the first guiding roller approaches or moves away from the second guiding roller by lateral movement to adjust the gap size with the second guiding roller; the second guiding roller switches the guiding groove located on the working surface by longitudinal movement.

[0009] As another embodiment of the present application, the first guiding roller includes a first central shaft, a first roller body, and a positioning and locking block; the first central shaft is perpendicular to the tensioning table surface, the lower end of the first central shaft is slidably matched with a displacement groove opened on the tensioning table surface, the positioning and locking block is located in the displacement groove, and the positioning and locking block rotates around the axis of the first central shaft to switch between the clamped state and the sliding state with the displacement groove; the first roller body is sleeved on the first central shaft, and a plurality of the guiding grooves are all opened on the outer periphery of the first roller body.

[0010] As another embodiment of the present application, the open end of the displacement groove has a top plate, a guiding hole is opened on the top plate, and the guiding hole allows the first central shaft to pass through; the lower end of the top plate has two sets of protruding portions, the two sets of protruding portions are respectively located on both sides of the guiding hole, each set of protruding portions has a plurality of downward protruding limiting protrusions, and the plurality of limiting protrusions are arranged at intervals along the length direction of the guiding hole; the positioning and locking block horizontally rotates between the two sets of limiting protrusions or abuts against the lower end of the limiting protrusions.

[0011] As another embodiment of the present application, there are two positioning and locking blocks on the outer side of the same first central shaft, and the two positioning and locking blocks are symmetrically arranged along the axis of the first central shaft; the upper end of the positioning and locking block has an inclined surface, and the inclined surface gradually slopes upward in the counterclockwise direction.

[0012] As another embodiment of the present application, the tensioning table surface also has a positioning wire clip and a redirecting wire clip, the positioning wire clip is located upstream of the tensioning roller group, and the positioning wire clip is used to longitudinally clamp the cable and ensure that the cable is consistent with the length direction of the first set of driving structures; the redirecting wire clip is located on one side of the tensioning roller group, and the redirecting wire clip horizontally clamps the cable to change the inclination direction of the cable. The positioning wire clamp includes a base and a top seat. The base has a longitudinally extending portion, which is in sliding fit with a groove on the top seat. The lower end of the top seat and the upper end surface of the base are relatively provided with wire grooves. The top seat is fixed to the upper end of the base by bolts for fixing the cable in the inner cavity formed by the two opposite wire grooves. The redirecting wire clamp includes a fixed seat and a movable seat. The movable seat is slidably arranged on the fixed seat in the horizontal direction. The front end of the fixed seat has a stop block. One side of the movable seat close to the stop block has a movable block. The movable block is provided with a groove in the horizontal direction. The movable block has a degree of freedom in the direction perpendicular to the length of the fixed seat. The movable seat moves forward to fix the cable between the groove and the stop block. When the cable is stressed, the movable block can slide in the direction perpendicular to the length of the fixed seat.

[0013] As another embodiment of the present application, the tensioning roller group further includes a longitudinal roller group located on the tensioning table surface. The tensioning table surface has a guiding rail located on the same straight line as the first group of driving structures. The longitudinal roller group is connected to the guiding rail. The longitudinal roller group includes a slider, a mounting support plate, and longitudinal roller wheels. The slider is slidably arranged on the guiding rail. There are two support plates. The two support plates are respectively located on both sides of the slider, and the lower ends of the support plates are attached to the upper end surface of the tensioning table surface. The support plates are detachably connected to the tensioning table surface. The longitudinal roller wheels are installed between the two support plates. The outer circumference of the longitudinal roller wheels has a spiral positioning groove.

[0014] As another embodiment of the present application, there are multiple longitudinal roller groups. The multiple longitudinal roller groups are arranged at intervals, and a positioning block is installed at the end of the guiding rail. The positioning block is used to fix the second end of the cable.

[0015] The beneficial effect of the cable resistance detection mechanism provided by the present invention is that: compared with the prior art, the cable resistance detection mechanism of the present invention positions the two ends of the cable through the first driving structure and the second driving mechanism respectively, arranges the cable in a bent state on the tensioning table surface through multiple groups of horizontal roller groups, and with the cooperation of the first guiding roller and the second guiding roller, changes the bending degree of the cable to fit the bending state of the cable under the actual working condition, conducts dynamic simulation under the actual working condition, and thereby improves the resistance detection accuracy and detection efficiency of the cable. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 Schematic structural diagram of the cable resistance detection mechanism provided by the embodiment of the present invention; Figure 2 Top view of the cable resistance detection mechanism provided by the embodiment of the present invention; Figure 3 Schematic structural diagram of the first guiding roller provided by the embodiment of the present invention; Figure 4 Schematic sectional structure diagram of the displacement groove provided by the embodiment of the present invention; Figure 5 Connection schematic diagram of the first central shaft and the positioning locking block provided by the embodiment of the present invention; Figure 6 Schematic structural diagram of the second guiding roller provided by the embodiment of the present invention; Figure 7 Schematic structural diagram of the positioning wire clamp provided by the embodiment of the present invention; Figure 8 Schematic structural diagram of the redirecting wire clamp provided by the embodiment of the present invention; Figure 9 Side view of the longitudinal roller group provided by the embodiment of the present invention.

[0018] In the figure: 1, force application tabletop; 2, first group of driving structures; 3, positioning seat; 4, traction seat; 5, telescopic cylinder; 6, positioning wire clamp; 7, tensioning tabletop; 8, first guiding roller; 9, second guiding roller; 10, redirecting wire clamp; 11, second group of driving structures; 12, directional guide rail; 13, longitudinal roller group; 14, connecting groove; 15, first roller body; 16, top plate; 17, displacement groove; 18, first central shaft; 19, rectangular block structure; 20, limiting protrusion; 21, positioning locking block; 22, lifting cylinder; 23, base; 24, top seat; 25, longitudinal extension; 26, wire groove; 27, fixed seat; 28, movable seat; 29, movable groove; 30, movable part; 31, movable block; 32, stop block; 33, cable; 34, support plate; 35, longitudinal roller; 36, positioning groove; 37, slider. Detailed implementation manners

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] Please refer to Figures 1 to 9, the cable resistance detection mechanism provided by the present invention will be described below. The cable resistance detection mechanism includes a workbench, a tensioning roller group, and an adjustment and testing component. The workbench includes a tensioning tabletop 7 and a force application tabletop 1 arranged in sequence. The adjustment and testing component includes a first set of driving structures 2 located on the force application tabletop 1 and a second set of driving structures 11 located on the tensioning tabletop 7. The first set of driving structures 2 and the second set of driving structures 11 are respectively connected to two ends of the cable 33; the tensioning roller group is located on the tensioning tabletop 7 between the first set of driving structures 2 and the second set of driving structures 11. The tensioning roller group has multiple sets of horizontal roller groups. Each set of horizontal roller groups includes a first guiding roller 8 and a second guiding roller 9. There is a gap for the cable 33 to pass through between the first guiding roller 8 and the second guiding roller 9. The multiple sets of horizontal roller groups cooperate to position the distribution trajectory of the cable 33 on the tensioning tabletop 7.

[0021] Compared with the prior art, the cable resistance detection mechanism provided by the present invention positions the two ends of the cable 33 through the first driving structure and the second driving mechanism respectively, arranges the cable 33 in a bent state on the tensioning tabletop 7 through multiple sets of horizontal roller groups, and changes the bending degree of the cable 33 by means of the cooperation of the first guiding roller 8 and the second guiding roller 9 to fit the bending state of the cable 33 under the actual working condition, conducts dynamic simulation under the actual working condition, and thus improves the resistance detection accuracy and detection efficiency of the cable 33.

[0022] The height of the force application tabletop 1 is lower than that of the tensioning tabletop 7, which ensures that the end of the cable 33 is in a horizontal state with the tensioning tabletop 7 when connecting the first set of driving structures 2. The longitudinal displacement change outside the detection range is reduced. Displacement sensors and tension and pressure sensors are added at both the first set of driving structures 2 and the second set of driving structures 11, and the resistance change data is obtained by acquiring the values of the sensors.

[0023] The first set of driving structures 2 is composed of a slide rail, a positioning seat 3, and a traction seat 4. The positioning seat 3 is fixed on the slide rail or at the end of the slide rail, and it is used to fix the first end of the outer shell of the cable 33; the traction seat 4 is located on one side of the positioning seat 3. The traction seat 4 is fixedly connected to the end of the steel wire extending out of the outer shell of the cable 33. The traction seat 4 is connected with a telescopic cylinder 5, and the telescopic cylinder 5 pushes the traction seat 4 to move along the slide rail. When an elastic member is connected to the first end of the cable 33, it is required that the elastic member is in an unloaded state when the telescopic cylinder 5 is not working. The tension and pressure sensor and the displacement sensor are both fixed on the traction seat 4.

[0024] The second set of driving structures 11 has the same structure as the first set of driving structures 2 and is used to connect the second end of the cable 33. The second set of driving structures 11 is located on the side of the tensioning tabletop 7 away from the first set of driving structures 2.

[0025] On the tensioning tabletop 7, the first guide roller 8 and the second guide roller 9 are used to tension the cable 33 and guide the cable 33 to form a partial bending trajectory with the first guide roller 8 or the second guide roller 9 as the radius. The cooperation and distribution positions of adjacent two groups of horizontal roller sets determine the bending trajectory of the cable 33.

[0026] On the tensioning tabletop 7, the positions of the first guide roller 8 and the second guide roller 9 are arranged according to the actual bending trajectory of the cable 33. One or more second guide rollers 9 can be distributed circumferentially on the same first guide roller 8. Similarly, one or more first guide rollers 8 can be distributed circumferentially on the same second guide roller 9.

[0027] In some possible embodiments, please refer to Figures 1 to 6 , both the first guide roller 8 and the second guide roller 9 have a plurality of guide grooves arranged at longitudinal intervals, and the inner diameters of the plurality of guide grooves decrease successively from top to bottom or from bottom to top. The guide grooves are used to fit the cable 33.

[0028] A plurality of guide grooves are provided on both the first guide roller 8 and the second guide roller 9. The guide grooves are circular trajectories, and the inner diameters of different guide grooves on each guide roller are different. Switching the guide grooves can change the radius of the bending trajectory of the cable 33. When it is necessary to switch to different environments, only the first guide roller 8 and the second guide roller 9 need to be adjusted to switch the guide grooves, and there is no need to replace the first guide roller 8 and the second guide roller 9.

[0029] The first guide roller 8 has a degree of freedom to move horizontally, and the second guide roller 9 has a degree of freedom to move longitudinally; the first guide roller 8 moves horizontally closer to or away from the second guide roller 9 to adjust the gap size with the second guide roller 9; the second guide roller 9 switches the guide groove located on the working surface by moving longitudinally.

[0030] The first guide roller 8 moves horizontally and the second guide roller 9 moves longitudinally. By their cooperation, the gap between them and the radius value of the arc trajectories on both sides of the cable 33 are changed.

[0031] In addition, the inner diameters of the plurality of guide grooves of the first guide roller 8 gradually increase from top to bottom, and the inner diameters of the plurality of guide grooves of the second guide roller 9 gradually decrease from top to bottom; or, the inner diameters of the plurality of guide grooves of the first guide roller 8 gradually decrease from top to bottom, and the inner diameters of the plurality of guide grooves of the second guide roller 9 gradually increase from top to bottom.

[0032] The radial change trend of the guide grooves on the first guide roller 8 and the second guide roller 9 along the height direction is opposite, that is, when the second guide roller 9 and the first guide roller 8 are at the same height, the largest guide groove on the first guide roller 8 is opposite to the smallest guide groove on the second guide roller 9.

[0033] When the roller body cross-section of the first guide roller 8 is frustum-shaped, the roller body cross-section of the second guide roller 9 is an inverted frustum shape.

[0034] During adjustment, by adjusting the height of the cable 33, it is changed to be located in different guide grooves on the first guide roller 8, and then by adjusting the lifting of the second guide roller 9, the radius of the guide groove on the second guide roller 9 corresponding to the same height is changed. At the same time, taking advantage of the horizontally movable characteristic of the first wire roller, the distance between the first guide roller 8 and the second guide roller 9 is changed, so that the cable 33 is fixed between the two.

[0035] Specifically, the first guide roller 8 includes a first central shaft 18, a first roller body 15, and a positioning and locking block 21; the first central shaft 18 is perpendicular to the tensioning table 7, the lower end of the first central shaft 18 is in sliding fit with the displacement groove 17 opened on the tensioning table 7, the positioning and locking block 21 is located in the displacement groove 17, and the positioning and locking block 21 rotates around the axis of the first central shaft 18 to switch between the clamped state and the sliding state with the displacement groove 17; the first roller body 15 is sleeved on the first central shaft 18, and a plurality of guide grooves are all opened on the outer circumference of the first roller body 15.

[0036] The first central shaft 18 of the first guide roller 8 is longitudinally arranged, the upper end of the first central shaft 18 is connected to the first roller body 15, its lower end extends into the displacement groove 17 of the tensioning table 7, and moves along the length direction of the displacement groove 17. Optionally, the length direction of the displacement groove 17 is the same as the length direction of the tensioning table 7.

[0037] The first central shaft 18 penetrates through the first roller body 15, and has a protrusion at the upper end of the first central shaft 18, and this protrusion is a rectangular block structure 19. When it is necessary to rotate the first central shaft 18, only need to manually rotate the above-mentioned rectangular block structure.

[0038] The first central shaft 18 and the first roller body 15 rotate synchronously or relatively. When the first central shaft 18 and the first roller body 15 rotate synchronously, adjust the position of the second guide roller 9 after the first central shaft 18 is locked; when the first central shaft 18 and the first roller body 15 rotate relatively, the position of the second guide roller 9 can be adjusted first and then the first guide shaft is adjusted, but there is a large frictional force between the first central shaft 18 and the first roller body 15.

[0039] The positioning and locking block 21 connected to the lower end of the first central shaft 18 is located in the displacement groove 17. The positioning and locking block 21 is fixedly connected to the first central shaft 18. When the first central shaft 18 rotates, it drives the positioning and locking block 21 to rotate.

[0040] When the positioning and locking block 21 rotates, it is fixed by engaging with the inner sidewall of the clamping displacement groove 17. The length of the positioning and locking block 21 is greater than its width. When the length direction of the positioning and locking block 21 approaches the width direction of the displacement groove 17, the positioning and locking block 21 engages with the displacement groove 17. When the width direction of the positioning and locking block 21 approaches the width direction of the displacement groove 17, the positioning and locking block 21 does not contact the displacement groove 17.

[0041] Further, the open end of the displacement groove 17 has a top plate 16. A guiding hole is provided on the top plate 16, and the guiding hole allows the first central axis 18 to pass through; the lower end of the top plate 16 has two sets of protruding portions, and the two sets of protruding portions are respectively located on both sides of the guiding hole. Each set of protruding portions has a plurality of downwardly protruding limiting protrusions 20, and the plurality of limiting protrusions 20 are arranged at intervals along the length direction of the guiding hole; the positioning and locking block 21 rotates horizontally and is located between the two sets of limiting protrusions 20 or abuts against the lower end of the limiting protrusions 20.

[0042] The displacement groove 17 is provided on the tensioning table 7, its notch faces upward, and its bottom is lower than the upper end surface of the tensioning table 7.

[0043] The top plate 16 connected to the open end of the displacement groove 17 is attached to the tensioning table 7, and the upper end surface of the top plate 16 is flush with the upper end surface of the tensioning table 7. The limiting protrusion 20 provided at the lower end of the top plate 16 is used to cooperate with the positioning and locking block 21. When the positioning and locking block 21 rotates and its upper end surface abuts against the limiting protrusion 20 at the lower end of the top plate 16, the friction force between the two enables the first adjusting roller to be positioned.

[0044] In addition, there are two positioning and locking blocks 21 on the outer side of the same first central axis 18, and the two positioning and locking blocks 21 are symmetrically arranged along the axis of the first central axis 18; the upper end of the positioning and locking block 21 has an inclined surface, and the inclined surface gradually slopes upward in the counterclockwise direction.

[0045] The inclined surface at the upper end of the positioning and locking block 21 gradually abuts against the limiting protrusion 20 at the lower end of the top plate 16, enabling the first adjusting roller to be positioned. Since there are two positioning and locking blocks 21, when the first central axis 18 rotates, the positioning and locking blocks 21 on both sides move simultaneously and abut against the corresponding limiting protrusions 20 at the same time.

[0046] The structure of the second guiding shaft is the same as that of the first guiding shaft. The second guiding shaft has a second central axis and a second roller body. The lower end of the second central axis is connected to a lifting cylinder 22, and the lifting cylinder 22 is fixed in a groove provided on the tensioning table 7. The lifting cylinder 22 drives the second central axis and the second roller body to lift and lower simultaneously.

[0047] In some possible embodiments, please refer to Figure 1 、 Figure 2 、 Figure 7 and Figure 8, the tensioning tabletop 7 is also provided with a positioning wire clamp 6 and a redirecting wire clamp 10. The positioning wire clamp 6 is located upstream of the tensioning roller set. The positioning wire clamp 6 is used to longitudinally clamp the cable 33 and ensure that the cable 33 is aligned with the length direction of the first set of driving structures 2. The redirecting wire clamp 10 is located on one side of the tensioning roller set. The redirecting wire clamp 10 clamps the cable 33 horizontally to change the inclination direction of the cable 33. The positioning wire clamp 6 includes a base 23 and a top seat 24. The base 23 is provided with a longitudinally extending portion 25. The longitudinally extending portion 25 is in sliding fit with the groove on the top seat 24. The lower end of the top seat 24 and the upper end surface of the base 23 are relatively provided with wire grooves 26. The top seat 24 is fixed to the upper end of the base 23 by bolts to fix the cable 33 in the inner cavity formed by the two opposite wire grooves 26. The redirecting wire clamp 10 includes a fixed seat 27 and a movable seat 28. The movable seat 28 is slidably arranged on the fixed seat 27 in the horizontal direction. The front end of the fixed seat 27 has a stop block 32. One side of the movable seat 28 close to the stop block 32 has a movable block 31. The movable block 31 is provided with a groove in the horizontal direction. The movable block 31 has a degree of freedom in the direction perpendicular to the length direction of the fixed seat 27. The movable seat 28 moves forward to fix the cable 33 between the groove and the stop block 32. When the cable 33 is stressed, the movable block 31 can slide in the direction perpendicular to the length direction of the fixed seat 27.

[0048] The cable 33 in the positioning wire clamp 6 is clamped and fixed, and it does not have the degree of freedom to move in any direction. The redirecting wire clamp 10 is only used to change its running direction, and it can have the degree of freedom along the clamping direction of the wire clamp.

[0049] In the positioning wire clamp 6, the edge of the base 23 has a longitudinally extending portion 25. The longitudinally extending portion 25 protrudes from the upper end surface of the base 23 and is in sliding fit with the top seat 24, which improves the positioning accuracy of the cable 33. The top seat 24 is bolted to the base 23 to ensure the clamping strength. As Figure 7 shown, there are two longitudinally extending portions 25, and the two longitudinally extending portions 25 are symmetrically arranged on both sides of the base 23.

[0050] In the redirecting wire clamp 10, the fixed seat 27 is installed on the tensioning tabletop 7 by bolts, and correspondingly, a plurality of bolt holes are reserved on the tensioning tabletop 7. The fixed seat 27 has a movable groove 29 inside. The lower end of the movable seat 28 has a movable portion 30. The movable portion 30 extends into the movable groove 29 and is in sliding fit with the movable groove 29. The movable seat 28 is slidably installed on the fixed seat 27 and approaches or moves away from the stop block 32 along the length direction of the fixed seat 27. The front end of the movable seat 28 has a movable block 31, and the moving direction of the movable block 31 is perpendicular to the moving direction of the movable seat 28.

[0051] Optionally, the movable seat 28 can be disengaged from the movable block 31 along the moving direction.

[0052] Optionally, both ends of the movable seat 28 in the moving direction are connected to the movable block 31 by means of springs. A sliding groove is provided at the end of the movable block 31, and the movable block 31 has a sliding portion located in the sliding groove. Springs are respectively installed at both ends of the sliding groove, and the free ends of the two springs are respectively attached to the two sides of the sliding portion.

[0053] In some possible embodiments, see Figure 2 and Figure 9 The tensioning roller group also includes a longitudinal roller group 13 located on the tensioning table 7, and the tensioning table 7 has a directional guide rail 12 located in the same straight line as the first group of driving structures 2; the longitudinal roller group 13 is connected to the directional guide rail 12, and the longitudinal roller group 13 includes a slider 37, a mounting support plate 34 and a longitudinal roller 35, and the slider 37 is slidably arranged on the directional guide rail 12; there are two support plates 34, and the two support plates 34 are respectively located on both sides of the slider 37 and the lower end of the support plate 34 is attached to the upper end surface of the tensioning table 7, and the support plate 34 is detachably connected to the tensioning table 7; the longitudinal roller 35 is installed between the two support plates 34, and the outer periphery of the longitudinal roller 35 has a spiral positioning groove 36.

[0054] The longitudinal roller assembly 13 of the tensioning roller assembly is used to test the traction resistance of the cable 33 when it is longitudinally wound. The longitudinal roller assembly 13 is mounted on the directional guide rail 12. The sliders 37 of the longitudinal roller assembly 13 slide in engagement with the directional guide rail 12. The support plates 34 mounted on either side of the sliders 37 are L-shaped plates. The transverse portions of the support plates 34 fit against the tensioning table 7 and can be bolted into the connecting grooves 14 of the tensioning table 7 to prevent the tensioning roller assembly from moving. The longitudinal portions of the support plates 34 are used to mount the longitudinal rollers 35. The sidewalls of the connecting grooves 14 may be threaded.

[0055] The longitudinal roller 35 is fixedly connected between the two support plates 34 and does not have the function of rotation. The positioning grooves 36 opened on the longitudinal roller 35 are used to limit the cable 33, and the outer circumference of each longitudinal roller 35 has at least three circles of positioning grooves 36.

[0056] Optionally, there are multiple longitudinal roller groups 13 , which are arranged at intervals, and a positioning block is installed at the tail end of the directional guide rail 12 , and the positioning block is used to fix the second end of the cable 33 .

[0057] A positioning block may be separately provided at the tail end of the positioning guide rail, or a third set of driving structures may be provided. The structure of the third set of driving structures is consistent with that of the first set of driving structures 2 .

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Cable resistance detection mechanism, characterized in that, It includes a workbench, a tensioning roller group and an adjusting and testing component. The workbench includes a tensioning tabletop (7) and a force - applying tabletop (1) arranged in sequence. The adjusting and testing component includes a first - group driving structure (2) located on the force - applying tabletop (1) and a second - group driving structure (11) located on the tensioning tabletop (7). The first - group driving structure (2) and the second - group driving structure (11) are respectively connected to two ends of a cable (33). The tensioning roller group is located on the tensioning tabletop (7) between the first - group driving structure (2) and the second - group driving structure (11). The tensioning roller group has multiple groups of horizontal roller groups. Each group of the horizontal roller groups includes a first guiding roller (8) and a second guiding roller (9). There is a gap for the cable (33) to pass through between the first guiding roller (8) and the second guiding roller (9). Multiple groups of the horizontal roller groups cooperate to position the distribution trajectory of the cable (33) on the tensioning tabletop (7).

2. The cable resistance detection mechanism according to claim 1, characterized in that Both the first guiding roller (8) and the second guiding roller (9) have a plurality of guiding grooves arranged longitudinally at intervals, and the inner diameters of the plurality of guiding grooves decrease successively from top to bottom or from bottom to top. The guiding grooves are used to fit the cable (33).

3. The cable resistance detection mechanism according to claim 2, wherein, The inner diameters of the plurality of guiding grooves of the first guiding roller (8) gradually increase from top to bottom, and the inner diameters of the plurality of guiding grooves of the second guiding roller (9) gradually decrease from top to bottom. Or, the inner diameters of the plurality of guiding grooves of the first guiding roller (8) gradually decrease from top to bottom, and the inner diameters of the plurality of guiding grooves of the second guiding roller (9) gradually increase from top to bottom.

4. The cable resistance detection mechanism according to claim 2, wherein, The first guiding roller (8) has a degree of freedom of moving in the horizontal direction, and the second guiding roller (9) has a degree of freedom of moving in the longitudinal direction. The first guiding roller (8) moves horizontally closer to or farther away from the second guiding roller (9) to adjust the size of the gap with the second guiding roller (9). The second guiding roller (9) switches the guiding groove located on the workbench by moving longitudinally.

5. The cable resistance detection mechanism according to claim 2, characterized in that, The first guiding roller (8) includes a first central shaft (18), a first roller body (15) and a positioning and locking block (21). The first central shaft (18) is perpendicular to the tensioning tabletop (7). The lower end of the first central shaft (18) is in sliding fit with a displacement groove (17) opened on the tensioning tabletop (7). The positioning and locking block (21) is located in the displacement groove (17), and the positioning and locking block (21) rotates around the axis of the first central shaft (18) to switch the clamping state and the sliding state with the displacement groove (17). The first roller body (15) is sleeved on the first central shaft (18), and the plurality of guiding grooves are all opened on the outer periphery of the first roller body (15).

6. The cable resistance detection mechanism according to claim 5, wherein, The open end of the displacement groove (17) has a top plate (16). A guiding hole is formed in the top plate (16), and the guiding hole allows the first central axis (18) to pass through. The lower end of the top plate (16) has two sets of protruding parts, and the two sets of protruding parts are respectively located on both sides of the guiding hole. Each set of protruding parts has a plurality of downwardly protruding limiting protrusions (20), and the plurality of limiting protrusions (20) are arranged at intervals along the length direction of the guiding hole. The positioning and locking block (21) horizontally rotates between the two sets of limiting protrusions (20) or abuts against the lower ends of the limiting protrusions (20).

7. The cable resistance detection mechanism according to claim 5, wherein, There are two positioning and locking blocks (21) on the outer side of the same first central axis (18), and the two positioning and locking blocks (21) are symmetrically arranged along the axis of the first central axis (18). The upper end of the positioning and locking block (21) has an inclined surface, and the inclined surface gradually slopes upward in the counterclockwise direction.

8. The cable resistance detection mechanism according to claim 1, wherein, The tensioning table surface (7) also has a positioning wire clamp (6) and a redirecting wire clamp (10). The positioning wire clamp (6) is located upstream of the tensioning roller group. The positioning wire clamp (6) is used to longitudinally clamp the cable (33) and ensure that the cable (33) is consistent with the length direction of the first set of driving structures (2). The redirecting wire clamp (10) is located on one side of the tensioning roller group. The redirecting wire clamp (10) horizontally clamps the cable (33) to change the inclination direction of the cable (33). The positioning wire clamp (6) includes a base (23) and a top seat (24). The base (23) has a longitudinally extending portion (25), and the longitudinally extending portion (25) is in sliding fit with a groove on the top seat (24). The lower end of the top seat (24) and the upper end surface of the base (23) are oppositely provided with wire grooves (26). The top seat (24) is fixed to the upper end of the base (23) by bolts to fix the cable (33) in the inner cavity formed by the two opposite wire grooves (26). The redirecting wire clamp (10) includes a fixed seat (27) and a movable seat (28). The movable seat (28) is slidably arranged on the fixed seat (27) in the horizontal direction. The front end of the fixed seat (27) has a stop block (32). One side of the movable seat (28) close to the stop block (32) has a movable block (31). A horizontally extending groove is formed in the movable block (31). The movable block (31) has a degree of freedom along the length direction perpendicular to the fixed seat (27). The movable seat (28) moves forward to fix the cable (33) between the groove and the stop block (32). When the cable (33) is stressed, the movable block (31) can slide along the length direction perpendicular to the fixed seat (27).

9. The cable resistance detection mechanism according to claim 1, characterized in that, The tensioning roller set further includes a longitudinal roller set (13) located on the tensioning tabletop (7). There is an orientation guide rail (12) on the tensioning tabletop (7) that is on the same straight line as the first set of drive structures (2); the longitudinal roller set (13) is connected to the orientation guide rail (12). The longitudinal roller set (13) includes a slider (37), a mounting support plate (34), and a longitudinal roller (35). The slider (37) is slidably disposed on the orientation guide rail (12); there are two support plates (34). The two support plates (34) are respectively located on both sides of the slider (37), and the lower ends of the support plates (34) are in contact with the upper end surface of the tensioning tabletop (7). The support plates (34) are detachably connected to the tensioning tabletop (7); the longitudinal roller (35) is installed between the two support plates (34), and a spiral positioning groove (36) is provided on the outer periphery of the longitudinal roller (35).

10. The cable resistance detection mechanism according to claim 9, characterized in that, There are multiple longitudinal roller sets (13). The multiple longitudinal roller sets (13) are arranged at intervals, and a positioning block is installed at the tail end of the orientation guide rail (12). The positioning block is used to fix the second end of the cable (33).

Images