CN107063888B - Torque testing device for pole joint - Google Patents

Torque testing device for pole joint Download PDF

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Publication number
CN107063888B
CN107063888B CN201710177079.9A CN201710177079A CN107063888B CN 107063888 B CN107063888 B CN 107063888B CN 201710177079 A CN201710177079 A CN 201710177079A CN 107063888 B CN107063888 B CN 107063888B
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China
Prior art keywords
hole
rod
pole
holding
hydraulic
Prior art date
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Active
Application number
CN201710177079.9A
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Chinese (zh)
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CN107063888A (en
Inventor
李强
董根岭
沈红彬
于波
杨震强
毛锦
李海
郑薇
侯军伟
张小龙
杨明
周军
王�锋
宋义
黄琪伟
梁博
刘志
刘晓娟
何伟儒
宋宁
董思思
窦娟
刘蔚春
吴浩平
刘凯
刘志恒
张邹林
李倩
魏六甲
李斌
张喆
李新成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xianyang Power Supply Company State Grid Shaanxi Electric Power Co ltd
State Grid Corp of China SGCC
Original Assignee
Xianyang Power Supply Company State Grid Shaanxi Electric Power Co ltd
State Grid Corp of China SGCC
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Application filed by Xianyang Power Supply Company State Grid Shaanxi Electric Power Co ltd, State Grid Corp of China SGCC filed Critical Xianyang Power Supply Company State Grid Shaanxi Electric Power Co ltd
Priority to CN201710177079.9A priority Critical patent/CN107063888B/en
Publication of CN107063888A publication Critical patent/CN107063888A/en
Application granted granted Critical
Publication of CN107063888B publication Critical patent/CN107063888B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/22Investigating strength properties of solid materials by application of mechanical stress by applying steady torsional forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0021Torsional
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003Generation of the force
    • G01N2203/0042Pneumatic or hydraulic means
    • G01N2203/0048Hydraulic means

Abstract

The invention discloses a torque test device for a pole-holding joint, which comprises at least two stand columns and a plurality of fixing devices, wherein the number of the fixing devices corresponds to that of the stand columns; the outer surface of the circumference of each positioning circular ring is symmetrically provided with a plurality of pairs of first screw holes matched with the external screw threads at the other end of the supporting rod, a circle of springs are embedded on the inner surface of each positioning circular ring, each positioning circular ring is sleeved on the outer surface of the first holding rod or the second holding rod, a second through hole is arranged on each positioning block, one end of each fork-shaped torsion rod penetrates through the second through hole and is connected with a power rotating mechanism, the power rotating mechanism is connected with a hydraulic mechanism, and a pressure gauge is arranged on the hydraulic mechanism.

Description

Torque testing device for pole joint
[ field of technology ]
The invention relates to the field of electric machinery, in particular to a torque testing device for a pole connection part.
[ background Art ]
Insulating pole ladder: the top end of the platform type single ladder is provided with a supporting arm, the lower end of the supporting arm is provided with a push-pull pedal, a transverse body guard bar and an adjustable seat plate are arranged after the pedal pull rod reversely extends, the front end of the supporting arm is provided with a shackle, the supporting arm can prevent the user from leaning upward and stepping on the pedal, and the plate is reserved with an insertion spoon; the insulating pole ladder is a rectangular hollow structural section formed by high-temperature polymerization and pultrusion of more than thirty chemical materials such as glass fiber, glass protection pad, alkali-free fiber, epoxy resin, phenolic resin, unsaturated resin and the like. The section bar accords with the mechanical structure principle, has strong bending resistance and difficult distortion, the ladder supports are of an anti-skid design, the ladder sides and the ladder supports are in semi-penetrating connection, and are reinforced by penetrating and connecting the whole round solid rod bodies, so that the stress is uniform and reasonable, and the whole connection is reliable and stable.
Because the restriction of single pole height, often need increase another pole and satisfy the normal use on the scene on the pole, but pole and pole's junction, if the connection is unstable, can lead to the staff who is being under construction to drop from high altitude, cause constructor personal injury, delay time limit for a project moreover, can not in time repair the circuit, influence normal use.
[ invention ]
In order to solve the problems in the prior art, the invention aims to provide a torque testing device for a pole connection part, which can test the magnitude of the bearing torque of the pole connection part before the pole is used so as to meet the normal use on site, thereby avoiding the falling of personnel working in high altitude and further guaranteeing the personal safety of constructors; meanwhile, smooth construction is ensured, and the construction is completed in a preset construction period.
In order to achieve the above purpose, the present invention is realized by the following technical scheme.
The torque test device comprises at least two stand columns and a plurality of fixing devices, wherein the fixing devices correspond to the number of the stand columns, any one end of each stand column is fixed on each fixing device, a first through hole is respectively formed in the upper part and the lower part of each stand column, a supporting rod is matched with each first through hole, external threads are respectively formed in the peripheral outer surfaces of two ends of each supporting rod, and nuts are arranged on the external threads at one end of the supporting rod matched with each first through hole; the device comprises a support rod, a plurality of positioning rings, a first holding rod, a second holding rod, a first holding rod and a second holding rod, wherein the outer circumferential surface of each positioning ring is symmetrically provided with a plurality of pairs of first screw holes matched with the outer threads at the other end of the support rod; the fork-shaped torsion bar comprises a first telescopic clamping arm and a second telescopic clamping arm, the first telescopic clamping arm and the second telescopic clamping arm can be respectively clamped at different positions of the first holding pole and the second holding pole, the positioning block is movably arranged on the outer surface of any upright post and is positioned at the same horizontal position with the fork-shaped torsion bar, a second through hole is formed in the positioning block, the second through hole is matched with the fork-shaped torsion bar, one end of the fork-shaped torsion bar penetrates through the second through hole to be connected with a power rotating mechanism, a hydraulic mechanism is connected onto the power rotating mechanism, and a pressure gauge is arranged on the hydraulic mechanism.
The invention is further improved in that:
the power rotating mechanism comprises an oval roller, a circle of slide ways are respectively arranged on the upper surface and the lower surface of the oval roller and along the outer edges of the oval roller, a power chuck which slides in cooperation with the slide ways is connected with a piston connecting rod, and a hydraulic mechanism is connected with the power chuck through the piston connecting rod.
The hydraulic mechanism comprises a hydraulic pipeline, a hydraulic pump and a test power supply, the power chuck is connected to the hydraulic pipeline through a piston connecting rod, the hydraulic pipeline is connected with a pressure gauge and the hydraulic pump, and the hydraulic pump is connected with the test power supply.
The positioning block is also provided with a third through hole perpendicular to the second through hole, the third through hole can slide up and down on the outer surface of the upright post, a second screw hole is formed in communication with the third through hole, a bolt is screwed with the second screw hole in a matched mode, and the positioning block is fixed on the upright post under the matching of the bolt and the second screw hole.
The positioning block is rectangular in shape.
The test device comprises four stand columns, wherein two stand columns are symmetrically arranged around a first holding pole and a second holding pole.
The shape of the upright post is a cylindrical shape or a rectangular shape.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, under the action of the fork-shaped torsion bar, the power rotating mechanism, the hydraulic mechanism and the pressure gauge, the connection position of the first holding bar and the second holding bar can bear a large torque so as to meet the requirements of normal construction, and the torque bearing sizes of the first holding bar and the second holding bar at different positions can be measured by adjusting the first telescopic clamping arm and the second telescopic clamping arm, so that the torque bearing sizes of the connection position of the first holding bar and the second holding bar can be measured more accurately, the falling of personnel working at high altitude can be avoided, and the personal safety of constructors can be further ensured; meanwhile, smooth construction is ensured, and the construction is completed in a preset construction period.
[ description of the drawings ]
Fig. 1 is an overall schematic diagram of a torque testing apparatus for a pole connection of the present invention.
Wherein, 1-a first holding pole; 2-a second holding pole; 3-positioning a circular ring; 4-supporting rods; 5-nuts; 6-stand columns; 7-fixing means; 8-a fork-shaped torsion bar; 9-positioning blocks; 10-elliptical rollers; 11-a piston cylinder; 12-a power chuck; 13-hydraulic piping; 14-a hydraulic pump; 15-a pressure gauge; 16-test power supply; 17-piston connecting rod.
[ detailed description ] of the invention
The invention is described in further detail below with reference to the attached drawing figures:
referring to fig. 1, the torque testing device for the joint of the poles of the invention comprises four upright posts 6 and four fixing devices 7, wherein two upright posts 6 are symmetrically arranged around the first pole 1 and the second pole 2, and the upright posts 6 are in a cylindrical shape or a rectangular shape. Any one end of each upright post 6 is fixed on each fixing device 7, the upper part and the lower part of each upright post 6 are respectively provided with a first through hole, and each support rod 4 is matched with each first through hole, wherein external threads are respectively arranged on the circumferential external surfaces of the two ends of each support rod 4, and nuts are arranged on the external threads at one end of each support rod 4 matched with each first through hole; the novel electric pole further comprises a plurality of positioning circular rings 3, a plurality of pairs of first screw holes matched with the external threads at the other end of the supporting rod 4 are symmetrically arranged on the peripheral outer surface of each positioning circular ring 3, a circle of springs are embedded on the inner surface of each positioning circular ring 3, and each positioning circular ring 3 is sleeved on the outer surface of the first holding pole 1 or the second holding pole 2. Through the mode above with first pole 1 and second pole 2 fixed, prevent that first pole 1 and second pole 2 from appearing the phenomenon that removes at experimental in-process to influence normal test or unable assurance measuring moment of torsion data accuracy can not satisfy normal construction needs, thereby can arouse high altitude constructor to drop in the use, cause unnecessary injury.
The positioning ring 3 comprises a first semicircular ring and a second semicircular ring, spring layers are arranged on the inner surfaces of the first semicircular ring and the second semicircular ring, one ends of the first semicircular ring and the second semicircular ring are hinged through hinges, and the other ends of the first semicircular ring and the second semicircular ring are connected with the clamping table in a matched mode through clamping hooks.
The fork-shaped torsion bar is characterized by further comprising a fork-shaped torsion bar 8 and a positioning block 9, wherein the fork-shaped torsion bar 8 comprises a first telescopic clamping arm and a second telescopic clamping arm, and the first telescopic clamping arm and the second telescopic clamping arm can be respectively clamped at different positions of the first holding pole 1 and the second holding pole 2 by adjusting the distance. Under the adjustment of the first telescopic clamping arm and the second telescopic clamping arm, the torque of the first holding pole 1 and the second holding pole 2 at different positions can be measured, so that the torque of the joint of the first holding pole 1 and the second holding pole 2 meeting construction can be measured more accurately.
The positioning block 9 is movably arranged on the outer surface of any upright post and is positioned at the same horizontal position with the fork-shaped torsion rod 8, a second through hole is formed in the positioning block 9, the second through hole is matched with the fork-shaped torsion rod 8, one end of the fork-shaped torsion rod 8 penetrates through the second through hole to be connected with a power rotating mechanism, the power rotating mechanism is connected with a hydraulic mechanism, a pressure gauge 15 is arranged on the hydraulic mechanism, and the positioning block 9 is rectangular; the hydraulic mechanism is given a certain pressure to drive the power rotating mechanism to rotate, meanwhile, the change of the joint of the first holding pole and the second holding pole is observed, once the change is found to be toppled over, the reading of the pressure gauge 15 at the moment is recorded, a plurality of data are recorded through a plurality of times of measurement data, meanwhile, the positions of the first telescopic clamping arm and the second telescopic clamping arm, which are clamped at the different positions of the first holding pole 1 and the second holding pole 2, are also adjusted, then the torque of the joint of the first holding pole 1 and the second holding pole 2 can be more accurately measured through the calculation of the data in the measurement data.
The positioning block can also be formed by two split rectangular positioning blocks, and a second through hole is formed between the two rectangular positioning blocks in a splicing way.
The power rotating mechanism comprises an oval roller 10, a circle of slide ways are respectively arranged on the upper surface and the lower surface of the oval roller 10 and along the outer edges of the oval roller, a power clamping head 12 which slides in a matched manner with the slide ways is arranged on the power clamping head 12, a piston connecting rod 17 is connected to the power clamping head 12, the power clamping head is arranged in a piston cylinder 11 through the piston connecting rod 17, and the piston cylinder 11 is connected with a hydraulic mechanism. This ensures that the linear motion is converted into a circular motion and thus measures the amount of torque that can be taken at the junction of the first and second poles 1, 2.
The hydraulic mechanism comprises a hydraulic pipeline 13, a hydraulic pump 14 and a test power supply 16, the power chuck 12 is connected to the hydraulic pipeline 13 through a piston connecting rod 17, a pressure gauge 15 and the hydraulic pump 14 are connected to the hydraulic pipeline 13, and the test power supply 16 is connected to the hydraulic pump 14.
The positioning block 9 is further provided with a third through hole perpendicular to the second through hole, the third through hole can slide up and down on the outer surface of the upright post 6, a second screw hole is formed in the third through hole and communicated with the third through hole, a bolt is in fit and screwed connection with the second screw hole, and the positioning block is fixed on the upright post 6 under the fit of the bolt and the second screw hole. The positioning block is prevented from sliding in the test process, so that the fork-shaped torsion bar is prevented from shifting, and the accuracy of data is ensured.
According to the invention, under the action of the fork-shaped torsion bar 8, the power rotating mechanism, the hydraulic mechanism and the pressure gauge 15, the connection part of the first holding pole 1 and the second holding pole 2 can bear a large torque so as to meet the requirements of normal construction, and the torque bearing sizes of the first holding pole 1 and the second holding pole 2 at different positions can be measured by adjusting the first telescopic clamping arm and the second telescopic clamping arm, so that the torque bearing sizes of the connection part of the first holding pole 1 and the second holding pole 2 can be measured more accurately, the falling of personnel working in high altitude can be avoided, and the personal safety of constructors can be further ensured; meanwhile, smooth construction is ensured, and the construction is completed in a preset construction period.
The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims (5)

1. The torque testing device for the joint of the holding pole is characterized by comprising four upright posts (6) and a plurality of fixing devices (7) corresponding to the number of the upright posts (6), wherein any one end of each upright post (6) is fixed on each fixing device (7), a first through hole is respectively formed in the upper part and the lower part of each upright post (6), a supporting rod (4) is matched with each first through hole, external threads are respectively formed in the peripheral outer surfaces of two ends of each supporting rod (4), and nuts (5) are arranged on the external threads at one end of the supporting rod (4) matched with each first through hole; the device comprises a supporting rod (4), a plurality of positioning rings (3), a first ring of springs, a first holding rod (1) and a second holding rod (2) connected with the first holding rod (1), wherein a plurality of pairs of first screw holes matched with the external screw threads at the other end of the supporting rod (4) are symmetrically arranged on the peripheral outer surface of each positioning ring (3), the first ring of springs is embedded on the inner surface of each positioning ring (3), two upright posts (6) are symmetrically arranged around the first holding rod (1) and the second holding rod (2), and the positioning rings (3) are respectively sleeved on the outer surfaces of the first holding rod (1) and the second holding rod (2); the fork-shaped torsion bar (8) comprises a first telescopic clamping arm and a second telescopic clamping arm, the first telescopic clamping arm and the second telescopic clamping arm can be respectively clamped at different positions of the first holding pole (1) and the second holding pole (2), the positioning block (9) is movably arranged on the outer surface of any one upright post (6) and is positioned at the same horizontal position with the fork-shaped torsion bar (8), and the positioning block (9) is rectangular; the locating block (9) is provided with a second through hole, the second through hole is matched with the fork-shaped torsion rod (8), one end of the fork-shaped torsion rod (8) penetrates through the second through hole to be connected with a power rotating mechanism, the power rotating mechanism is connected with a hydraulic mechanism, and the hydraulic mechanism is provided with a pressure gauge (15).
2. The torque testing device for the pole connection part according to claim 1, wherein the power rotating mechanism comprises an oval roller (10), a circle of slide ways are respectively arranged on the upper surface and the lower surface of the oval roller (10) along the outer edge of the oval roller (10), a power clamping head (12) which slides in cooperation with the slide ways is arranged on the oval roller, and a piston connecting rod (17) is connected to the power clamping head (12) and a hydraulic mechanism is connected to the power clamping head through the piston connecting rod (17).
3. Torque testing device for pole joints according to claim 2, characterized in that the hydraulic mechanism comprises a hydraulic pipe (13), a hydraulic pump (14) and a test power supply (16), the power chuck (12) is connected to the hydraulic pipe (13) through a piston connecting rod (17), a pressure gauge (15) and the hydraulic pump (14) are connected to the hydraulic pipe (13), and the test power supply (16) is connected to the hydraulic pump (14).
4. The torque testing device for the joint of the holding pole according to claim 1, wherein the positioning block (9) is further provided with a third through hole perpendicular to the second through hole, the third through hole can slide up and down on the outer surface of the upright post (6), a second screw hole is arranged in communication with the third through hole, a bolt is in fit and screwed connection with the second screw hole, and the positioning block (9) is fixed on the upright post (6) under the fit of the bolt and the second screw hole.
5. Torque testing device for pole joints according to claim 1, characterized in that the shape of the upright (6) is cylindrical or rectangular.
CN201710177079.9A 2017-03-22 2017-03-22 Torque testing device for pole joint Active CN107063888B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710177079.9A CN107063888B (en) 2017-03-22 2017-03-22 Torque testing device for pole joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710177079.9A CN107063888B (en) 2017-03-22 2017-03-22 Torque testing device for pole joint

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CN107063888A CN107063888A (en) 2017-08-18
CN107063888B true CN107063888B (en) 2023-11-03

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107843503B (en) * 2017-10-17 2020-10-30 安徽电信器材贸易工业有限责任公司 Optical cable torsion test device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU56618U1 (en) * 2006-04-20 2006-09-10 Красноярская государственная архитектурно-строительная академия КрасГАСА TEST STAND
CN101788429A (en) * 2010-03-11 2010-07-28 山东中元自动化设备有限公司 Equipment for testing bending and torsion resisting performances of electrical insulator
CN203672724U (en) * 2013-12-25 2014-06-25 淄博千恒自动化工程有限公司 Insulator bending moment and torque testing machine
CN103900916A (en) * 2014-03-06 2014-07-02 燕山大学 Pulling and bending multi-axis loading fatigue testing machine
JP2014224744A (en) * 2013-05-16 2014-12-04 株式会社オートネットワーク技術研究所 Bending test device and bending test method
CN204988909U (en) * 2015-07-31 2016-01-20 西安科技大学 Compound loading test machine of panel torsional bending
CN106124338A (en) * 2016-07-15 2016-11-16 国网浙江省电力公司金华供电公司 A kind of pole static load bend test device
CN205808847U (en) * 2016-07-07 2016-12-14 东莞市顶好新材料科技有限公司 A kind of based on macromolecular material bending property detection device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU56618U1 (en) * 2006-04-20 2006-09-10 Красноярская государственная архитектурно-строительная академия КрасГАСА TEST STAND
CN101788429A (en) * 2010-03-11 2010-07-28 山东中元自动化设备有限公司 Equipment for testing bending and torsion resisting performances of electrical insulator
JP2014224744A (en) * 2013-05-16 2014-12-04 株式会社オートネットワーク技術研究所 Bending test device and bending test method
CN203672724U (en) * 2013-12-25 2014-06-25 淄博千恒自动化工程有限公司 Insulator bending moment and torque testing machine
CN103900916A (en) * 2014-03-06 2014-07-02 燕山大学 Pulling and bending multi-axis loading fatigue testing machine
CN204988909U (en) * 2015-07-31 2016-01-20 西安科技大学 Compound loading test machine of panel torsional bending
CN205808847U (en) * 2016-07-07 2016-12-14 东莞市顶好新材料科技有限公司 A kind of based on macromolecular material bending property detection device
CN106124338A (en) * 2016-07-15 2016-11-16 国网浙江省电力公司金华供电公司 A kind of pole static load bend test device

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