Fixing clamp for spacer twisting and gripping torque test

Abstract

A fixing clamp for a spacer twisting and gripping torque test comprises a left clamp and a right clamp, the left clamp is a U-shaped clamp composed of a right-side front inserting part, a right-side rear inserting part and a left-side connecting part which are integrally connected, the U-shaped clamp is horizontally arranged, and an opening of the U-shaped clamp faces rightwards; the right end of the left clamp is connected with the movable plate on the right side in an up-down sliding mode through a sliding mechanism, and a position locking device is further arranged on the sliding mechanism. The front end face of the movable plate is provided with a torque test interface. The right clamp adopts a hollow rectangular box body, and the left end face of the right clamp is provided with two inserting grooves matched with the front inserting part and the rear inserting part on the right side of the U-shaped clamp; an inserting part jacking device is arranged on the lower end surface of the right clamp; the inserting part jacking device comprises a jacking part driving system and two groups of jacking parts; the two groups of jacking parts are symmetrically and slidably arranged in an inner cavity of the rectangular box body front and back. The spacer twisting and gripping torque test device is suitable for various spacer models, can perform spacer twisting and gripping torque tests on different models of spacers, has good universality, and effectively improves the accuracy of test results and the test efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric power fitting frock, concretely relates to a fixed clamp for spacer bar torque test. BACKGROUND

[0002] The spacer bar is a fitting installed on the split conductor to fix the spacing between the split conductors, prevent the conductors from whipping each other, and suppress the wind vibration and sub-span oscillation. The spacer bar is a protective fitting for maintaining the relative spacing position of the multiple sub-conductors in a phase (pole), mainly including a body, a frame, and rubber pads and other accessories. The production process includes casting, heat treatment, and assembly of the body and the frame, among which the torque test is an important indicator for testing whether the produced spacer bar is qualified.

[0003] The utility model discloses a kind of high-strength aluminium bar tension test clamping devices, including U-shaped base and aluminium bar body, the left and right two side walls of the U-shaped base are respectively fixedly installed with hydraulic ram, and the free end of hydraulic ram is fixedly installed with L-shaped mounting bracket.The above technical scheme is vertically adjusted mechanism further to make to the vertical downward movement of upper clamping block, further make the clamping groove of the bottom surface of upper clamping block and the surface of aluminium bar body contact, by the meshing of upper clamping block and clamping wedge, further make to the secondary clamping and fixing of aluminium bar body, by twice clamping and fixing to the both ends of aluminium bar body, further make to improve the stability of the clamping of aluminium bar body, prevent aluminium bar body from sliding, by hydraulic ram drive L-shaped mounting bracket moves and makes to the rotational shaft axial stretching of aluminium bar body, further make to the tension test of aluminium bar body.By the both ends of aluminium bar body are respectively inserted to the inside of end fixed mechanism, by end fixed mechanism, further make to the end surface of aluminium bar body pre-fixing, make the surface of aluminium bar body and the inclined surface of clamping wedge fit, by vertical adjusting mechanism, further make to the vertical downward movement of upper clamping block, further make the clamping groove of the bottom surface of upper clamping block and the surface of aluminium bar body contact, by the meshing of upper clamping block and clamping wedge, further make to the secondary clamping and fixing of aluminium bar body, by twice clamping and fixing to the both ends of aluminium bar body, further make to improve the stability of the clamping of aluminium bar body, prevent aluminium bar body from sliding, by hydraulic ram drive L-shaped mounting bracket moves and makes to the rotational shaft axial stretching of aluminium bar body, further make to the tension test of aluminium bar body.

[0004] The above scheme is used to test the tension of aluminium bar, only the aluminium bar of set length can be inserted into the fixed mechanism and vertical adjusting mechanism for testing, and the aluminium bar that is too long or too short cannot be clamped, so the tension test cannot be performed, and the use has limitations. SUMMARY

[0005] The purpose of this invention is to provide a fixing fixture for testing the torsion torque of spacer bars, which can perform torsion torque tests on spacer bars of different models, has good versatility, and effectively improves the accuracy and efficiency of test results.

[0006] The present invention adopts the following technical solution:

[0007] A fixing fixture for testing the torsion torque of a spacer bar includes a left fixture and a right fixture. The left fixture is a U-shaped fixture consisting of two interlocking parts on the right side and a connecting part on the left side, which are integrally connected. The U-shaped fixture is horizontally positioned and its opening faces to the right. The right end of the left fixture is slidably connected to a movable plate on the right side via a sliding mechanism, which is also equipped with a position locking device. A torque testing interface is provided on the upper part of the front end face of the movable plate. The right fixture is a hollow rectangular box. The left end face of the right fixture is provided with two slots that are adapted to the two interlocking parts on the right side of the U-shaped fixture. The lower end face of the right fixture is provided with an interlocking part clamping device, which includes a clamping part driving system and two sets of clamping parts. The two sets of clamping parts are symmetrically slidably arranged in the inner cavity of the rectangular box. The clamping part driving system drives the two sets of clamping parts to move synchronously in opposite directions, thereby clamping the interlocking parts inserted into the slots.

[0008] The sliding mechanism includes a U-shaped connecting part with a groove inside the opening, and a slide rail that matches the groove is vertically arranged at the corresponding position of the movable plate.

[0009] The position locking device includes a locking housing, an adjusting bolt, and a clamping part. A moving groove is formed on the upper surface inside the locking housing. The locking housing is rotatably connected to the adjusting bolt. The front part of the adjusting bolt is set with a right-hand thread, the middle part is set with a smooth rod, and the tail part is set with a left-hand thread. The upper surfaces of the two clamping parts are slidably connected to the moving groove. A threaded through hole is formed on the upper part of the clamping part. The front and rear parts of the adjusting bolt are respectively threadedly connected to the corresponding clamping parts. A receiving groove is formed between the two clamping parts.

[0010] The slide rail is a dovetail-shaped slide rail, and the clamping part is provided with an inclined surface with the same angle as the inclined surface of the dovetail-shaped slide rail.

[0011] The torque testing interface is a hexagonal socket torque testing interface.

[0012] The driving system of the top pressing part comprises a screw rod, a motor, fixed plates and moving blocks; a through groove is formed in the center of the bottom surface of the right clamp in the axial direction, and each moving block is provided with a threaded through hole; the top pressing part is slidably connected with the right clamp through the moving blocks and the through groove; the fixed plates are symmetrically arranged on the left and right sides of the through groove; the left and right ends of the screw rod are light rods and are rotatably connected with the fixed plates through bearings; the left and right parts of the screw rod are provided with threads in opposite directions, and the middle part is a light rod; the moving blocks are threadedly connected with the left and right parts of the screw rod respectively; and the motor is horizontally arranged on the bottom surface of the right clamp, and the output shaft of the motor is coaxially connected with one end of the screw rod.

[0013] The front end of the adjusting bolt is welded with a handheld end.

[0014] The inner side of the plug-in part is symmetrically provided with a limiting through hole, and the outer end surface of the top pressing part is fixedly connected with a limiting block.

[0015] The limiting through hole is a ladder-shaped through hole, the right end surface of the ladder-shaped through hole is a first inclined surface, the outer end of the limiting block is provided with a second inclined surface; and the width of the ladder-shaped through hole is greater than the width of the limiting block.

[0016] The length of the axial through groove is the same as the spacing of the two insertion grooves.

[0017] The utility model discloses can apply to a plurality of spacer bar models, can carry out spacer bar torque test to different models of spacer bar, has good versatility, and effectively improves test result accuracy and test efficiency,

[0018] Further, the sliding mechanism comprises a U-shaped connecting part provided with a sliding groove in the opening, and the movable plate is vertically provided with a sliding rail matched with the sliding groove at the corresponding position, so that the smoothness of the sliding of the left clamp and the movable plate is enhanced.

[0019] Further, the position locking device comprises a locking shell, an adjusting bolt and limiting blocks, a moving groove is formed in the upper end surface of the locking shell, the locking shell is rotatably connected with the adjusting bolt, the handheld end is welded at the front end of the adjusting bolt, the front part is provided with a right-hand thread, the middle part is a light rod, the tail part is provided with a left-hand thread, the upper end surfaces of the two limiting blocks are slidably connected with the moving groove, threaded through holes are formed in the upper parts of the limiting blocks, the front part and the rear part of the adjusting bolt are threadedly connected with the corresponding limiting blocks, and a containing groove is formed between the two limiting blocks. The adjusting bolt is rotated to control the sliding of the limiting blocks in the moving groove of the upper end surface of the locking shell, so that the sliding rail is simultaneously clamped inward or loosened outward, the sliding rail is clamped by the two limiting blocks, and the fixing of the up-down position of the movable plate relative to the left clamp is realized.

[0020] Further, the utility model discloses set up the drive system of top tight part includes lead screw, motor, fixed plate and moving block, the right clamp bottom surface center is provided with the through groove along the axial direction, two groups of top tight part lower end face all are provided with moving block, and each moving block all sets up the threaded hole, and top tight part utilizes moving block and through groove and right clamp sliding connection, and the through groove left and right sides are provided with fixed plate, and the left and right ends of lead screw are light pole and are rotated and connected with fixed plate through bearing, the left and right parts of lead screw are provided with opposite thread, and the middle part is provided with light pole, and the left and right parts of lead screw are also respectively screw -threaded with moving block, motor is horizontally set up at right clamp bottom surface, and the output shaft of motor is coaxial with one end of lead screw and is connected.

[0021] The utility model can be applied to various spacer bar models, can conduct spacer bar torque test on different models of spacer bar, has good versatility, and effectively improves test result accuracy and test efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is three-dimensional structure schematic diagram of the utility model;

[0023] Figure 2 It is main view structure schematic diagram of the utility model;

[0024] Figure 3 It is top view structure schematic diagram of the utility model;

[0025] Figure 4 It is top tight part drive device structure schematic diagram in the utility model;

[0026] Figure 5 It is structure schematic diagram of position locking device in the utility model.

[0027] In the drawing, 1, left clamp;2, right clamp;3, U-shaped connecting portion;4, slide rail;5, movable plate;6, torque test interface;7, limit plate;8, top tight part;9, limit through hole;10, limit block;11, insertion slot;12, insertion part;13, through groove;15, lead screw;16, motor;17, fixed plate;18, limit slide;19, position locking device;20, moving block;21, moving groove;22, adjusting bolt;23, left-hand thread;24, locking housing;25, right-hand thread;26, clamping portion;27, containing groove;28, light pole. DETAILED DESCRIPTION

[0028] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. It should be understood by those skilled in the art that the embodiments described below are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0029] The various non-limiting embodiments of the present application will be specifically introduced below. Any element quantity in the drawings is used for example but not limitation, and any naming is only used for distinction, but does not have any limiting meaning.

[0030] The principle and spirit of the present application will be explained in detail below with reference to several representative embodiments of the present application.

[0031] As shown in Figures 1 to 5 The spacer rod torque test fixing clamp provided by the present application comprises a left clamp 1 and a right clamp 2. The left clamp 1 is a U-shaped clamp composed of a right side front and back two plug-in parts 12 and a left side connecting part integrally connected. The U-shaped clamp is horizontally arranged and the opening is rightward. The right end of the left clamp 1 is connected with the upper and lower sliding plates 5 on the right side through a sliding mechanism. The sliding mechanism is further provided with a position locking device 19. The front end face of the sliding plate 5 is provided with a torque test interface 6. The right clamp 2 is a hollow rectangular box body. The left end face of the right clamp 2 is provided with two plug-in grooves 11 matched with the right side front and back two plug-in parts 12 of the U-shaped clamp. The lower end face of the right clamp 2 is provided with a plug-in part clamping device. The plug-in part clamping device comprises a clamping part driving system and two groups of clamping parts 8. The two groups of clamping parts 8 are symmetrically arranged in the front and back of the rectangular box body and horizontally slide. The clamping part driving system drives the two groups of clamping parts 8 to move synchronously towards or reversely, and the clamping parts 8 clamp the plug-in parts 12 inserted into the plug-in grooves 11.

[0032] In the detection process, first, the ends of the wire of the applicable model are fixed to make the wire in a straight state, then the interval rod body to be detected is clamped on the wire, the left clamp 1 and the right clamp 2 are placed on both sides of the lower part of the interval rod body, then the left clamp 1 and the right clamp 2 are moved towards each other to make the plug-in part 12 inserted into the slot 11, at this time, the left clamp 1 and the right clamp 2 form a clamping on the lower part of the interval rod body, then the two groups of tightening parts 8 in the right clamp 2 are pushed by the tightening part driving system to tighten the plug-in part 12 in the slot 11, so as to lock the relative position of the left clamp 1 and the right clamp 2, and fix the interval rod body in the left clamp 1 and the right clamp 2, to ensure the fixing effect of the interval rod body; finally, the torque wrench is inserted into the torque test interface 6 and the movable plate 5 is twisted outward, so that the movable plate 5 drives the left clamp 1 and the right clamp 2 to rotate, and then drives the interval rod body to rotate, and generates a torsion force between the interval rod body and the wire, so as to test whether the slip occurs between the interval rod body and the wire, and complete the interval rod torsion torque test.

[0033] In order to enhance the smoothness of the sliding of the left clamp 1 and the movable plate 5, in the embodiment, the sliding mechanism includes a U-shaped connecting part 3 with a sliding groove in the opening, and the movable plate 5 is vertically provided with a sliding rail 4 matched with the sliding groove at the corresponding position, and the left clamp 1 is vertically slidably arranged on the movable plate 5 through the sliding mechanism.

[0034] In order to improve the accuracy of the test result, the position locking device 19 is used to lock the position of the left clamp 1 after the height adjustment is completed, so that the torque test interface 6 is flush with the center of the conductor clamped by the spacer rod body; in the embodiment, the position locking device 19 comprises a locking shell 24, an adjusting bolt 22 and a clamping part 26; the side surface of the locking shell 24 is detachably connected with the lower end surface of the U-shaped connecting part 3, the moving groove 21 is formed in the upper end surface of the locking shell 24, the locking shell 24 is rotationally connected with the adjusting bolt 22, the hand-held end is welded at the front end of the adjusting bolt 22, the right-hand thread 23 is arranged at the front part, the light rod 28 is arranged at the middle part, the left-hand thread 25 is arranged at the tail part, the upper end surfaces of the two clamping parts 26 are slidably connected with the moving groove 21, the threaded hole is formed in the upper part of the clamping part 26, the front part and the rear part of the adjusting bolt 22 are respectively threadedly connected with the corresponding clamping parts 26, the accommodating groove 27 is formed between the two clamping parts 26, the two clamping parts 26 clamp the sliding rail 4 to lock the position, so that the height of the left clamp 1 is maintained unchanged by the U-shaped connecting part 3; in order to better fit the two sides of the sliding rail 4 and enhance the stability of the position locking, the shape of the clamping part 26 is matched with the sliding rail 4; in the embodiment, the sliding rail 4 adopts the dovetail type sliding rail; the clamping part 26 is provided with the inclined surface which is matched with the inclined surface angle of the dovetail type sliding rail; the sliding of the clamping part 26 in the moving groove 21 of the locking shell 24 is controlled by rotating the adjusting bolt 22, so that the sliding rail 4 is simultaneously clamped inward or simultaneously loosened outward, and the fixing of the movable plate 5 relative to the up-down position of the left clamp 1 is realized by clamping the sliding rail 4 by the two clamping parts 26.

[0035] In the embodiment, the torque test interface 6 is the torque test interface of the internal hexagonal hole type, the torque wrench applies the test force value, so as to test whether the spacer rod body and the conductor slide, and the torque wrench is the prior art whose working principle is not described too much.

[0036] In order to achieve the purpose of clamping the spacer rod body, in the embodiment, the top pressing part driving system comprises a lead screw 15, a motor 16, a fixed plate 17 and a moving block 20; a through slot 13 is formed in the center of the bottom surface of the right clamp 2 in the axial direction, and the lower end surface of each of the two groups of top pressing parts 8 is provided with a moving block 20; a threaded hole is formed in each moving block 20; the top pressing part 8 is slidably connected with the right clamp 2 by means of the moving block 20 and the through slot 13; the fixed plates 17 are symmetrically arranged on the left and right sides of the through slot 13; the left and right ends of the lead screw 15 are light rods 28 and are rotatably connected with the fixed plates 17 by means of bearings; the left part of the lead screw 15 is provided with a left-hand thread 23, the middle part is provided with a light rod 28, and the right part is provided with a right-hand thread 25; the left and right parts of the lead screw 15 are further threadedly connected with moving blocks 20; the motor 16 is horizontally arranged on the bottom surface of the right clamp 2, and the output shaft of the motor 16 is coaxially connected with one end of the lead screw 15; the rotation of the lead screw 15 is driven by the motor 16, so that the moving blocks 20 move synchronously close to or away from each other, thereby realizing the synchronous movement of the two top pressing parts 8 close to or away from each other, the force applied to the plug-in part 12 by the two top pressing parts 8 remains consistent, and the purpose of clamping the spacer rod body is achieved.

[0037] In the embodiment, the moving block 20 and the through slot 13 are arranged, which not only realizes the sliding connection of the two groups of top pressing parts 8 with the bottom surface of the right clamp 2, but also effectively enhances the stability of the front and rear movement of the two top pressing parts 8 in the inner cavity of the right clamp 2; at the same time, it also limits the sliding track of the top pressing part 8, so as to cooperate with the effect of the lead screw nut realized by the moving block 20 and the lead screw 15, and synchronously drive the synchronous movement of the two top pressing parts 8 by the rotation of the lead screw 15. Similarly, a sliding track can also be arranged on the inner side of the two limiting plates 7 on the left and right end surfaces of the right clamp 2, and a sliding block is arranged on the corresponding end of each top pressing part 8; the top pressing part 8 is slidably connected with the two limiting plates 7 by means of the sliding track and the additional sliding block, and also has the effect of limiting the sliding track of the top pressing part 8; finally, the front and rear movement of the top pressing part 8 in the inner cavity of the right clamp 2 is realized.

[0038] In the embodiment, in order to further increase the fixing effect and prevent the safety hazard of the left clamp 1 falling off from the right clamp 2, limiting through holes 9 are symmetrically arranged on the inner surfaces of the two plug-in parts 12; limiting blocks 10 are fixedly connected to the middle part of the outer end surface of each top pressing part 8; and the position is locked after the limiting block 10 is inserted into the limiting through hole 9.

[0039] In order to further improve the locking effect, meanwhile, the spacer rod of different thickness can be matched, in the utility model, the limiting through hole 9 adopts the ladder type through hole, the right end surface of the limiting through hole 9 is the first inclined plane, and the right end surface of the limiting block 10 is provided with the second inclined plane matched with the slope of the first inclined plane, the width of the ladder type through hole is greater than the width of the limiting block 10, so that the limiting block 10 can enter the ladder type through hole; when in use, the limiting block 10 moves synchronously with the outward movement of the jacking part 8, when the second inclined plane of the limiting block 10 contacts with the first inclined plane of the limiting through hole 9, the continuous outward movement of the limiting block 10 will drive the plug-in part 12 to move to the right side continuously, so that the left clamp 1 and the right clamp 2 can further clamp the spacer rod body, meanwhile, the spacer rod of different thickness can be matched, and the versatility of the utility model is improved. Meanwhile, the moving block 20 and the lead screw 15 can realize the lead screw transmission, and have the self-locking effect, so that the retreat of the jacking part 8 is effectively prevented.

[0040] The utility model can be applied to various spacer rod models, can carry out the spacer rod torque test to different models of spacer rod, has good versatility, and effectively improves the test result accuracy and test efficiency.

[0041] According to the above description of the present specification, those skilled in the art can also understand that the terms used, such as "up", "down", "front", "back", "left", "right", "in", "out" and the like, are indicative of the orientation or positional relationship based on the orientation or positional relationship shown in the drawings of the present specification, and are only for the purpose of facilitating the description of the utility model and simplifying the description, and do not explicitly or implicitly indicate or imply that the devices or elements involved must have the specified orientation, be constructed and operated in a specified orientation, therefore, the above orientation or positional relationship terms cannot be understood or interpreted as a limitation on the utility model scheme.

[0042] In addition, in the description of the present specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise specifically limited.

Claims

1. A fixing fixture for testing the torsion torque of a spacer bar, characterized in that: The device includes a left clamp and a right clamp. The left clamp is a U-shaped clamp consisting of two interlocking parts on the right side and a connecting part on the left side, which are connected as one piece. The U-shaped clamp is horizontally positioned and its opening faces to the right. The right end of the left clamp is slidably connected to the right movable plate via a sliding mechanism, which is also equipped with a position locking device. A torque testing interface is provided on the upper part of the front end face of the movable plate. The right clamp is a hollow rectangular box. The left end face of the right clamp is provided with two slots that are adapted to the two interlocking parts on the right side of the U-shaped clamp. The lower end face of the right clamp is provided with an interlocking part clamping device, which includes a clamping part driving system and two sets of clamping parts. The two sets of clamping parts are symmetrically slidably arranged in the inner cavity of the rectangular box. The clamping part driving system drives the two sets of clamping parts to move synchronously in opposite directions, thereby clamping the interlocking parts inserted into the slots.

2. The fixing fixture for testing the torsion torque of a spacer bar according to claim 1, characterized in that: The sliding mechanism includes a U-shaped connecting part with a groove inside the opening, and a slide rail that matches the groove is vertically arranged at the corresponding position of the movable plate.

3. The fixing fixture for testing the torsion torque of a spacer bar according to claim 1, characterized in that: The position locking device includes a locking housing, an adjusting bolt, and a clamping part. A moving groove is formed on the upper surface inside the locking housing. The locking housing is rotatably connected to the adjusting bolt. The front part of the adjusting bolt is set with a right-hand thread, the middle part is set with a smooth rod, and the tail part is set with a left-hand thread. The upper surfaces of the two clamping parts are slidably connected to the moving groove. A threaded through hole is formed on the upper part of the clamping part. The front and rear parts of the adjusting bolt are respectively threadedly connected to the corresponding clamping parts. A receiving groove is formed between the two clamping parts.

4. The fixing fixture for testing the torsion torque of a spacer bar according to claim 2, characterized in that: The slide rail is a dovetail-shaped slide rail, and the clamping part is provided with an inclined surface with the same angle as the inclined surface of the dovetail-shaped slide rail.

5. The fixing fixture for testing the torsion torque of a spacer bar according to claim 1, characterized in that: The torque testing interface is a hexagonal socket torque testing interface.

6. The fixing fixture for testing the torsion torque of a spacer bar according to claim 1, characterized in that: The tightening drive system includes a lead screw, a motor, a fixed plate, and a moving block. A through slot is provided axially at the center of the bottom surface of the right clamp. Moving blocks are provided on the lower end faces of both sets of tightening parts. Each moving block has a threaded through hole. The tightening part is slidably connected to the right clamp via the moving blocks and the through slot. Fixed plates are symmetrically arranged on the left and right sides of the through slot. The left and right ends of the lead screw are smooth rods and are rotatably connected to the fixed plates via bearings. The left and right parts of the lead screw are provided with threads in opposite directions, and the middle part is a smooth rod. Moving blocks are also threadedly connected to the left and right sides of the lead screw. The motor is horizontally arranged on the bottom surface of the right clamp, and the output shaft of the motor is coaxially connected to one end of the lead screw.

7. The fixing fixture for testing the torsion torque of a spacer bar according to claim 3, characterized in that: The adjusting bolt has a hand-held end welded to its front end.

8. The fixing fixture for testing the torsion torque of a spacer bar according to claim 1, characterized in that: The inner side of the plug-in part is symmetrically provided with limit holes, and the middle of the outer end face of the clamping part is fixedly connected with a limit block.

9. The fixing fixture for testing the torsion torque of a spacer bar according to claim 8, characterized in that: The limiting through hole is configured as a trapezoidal through hole, with the right end face of the trapezoidal through hole being a first inclined surface, and the outer end of the limiting block having a second inclined surface; the width of the trapezoidal through hole is greater than the width of the limiting block.

10. The fixing fixture for testing the torsion torque of a spacer bar according to claim 6, characterized in that: The length of the axial through groove is the same as the distance between the two slots.

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