CN218726135U

CN218726135U - Tensile testing device for power wires and cables

Info

Publication number: CN218726135U
Application number: CN202222891750.5U
Authority: CN
Inventors: 沈永华; 王秋荣; 王新强; 沈腾飞
Original assignee: Anhui Guowei Cable Group Co ltd
Current assignee: Anhui Guowei Cable Group Co ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-03-24
Anticipated expiration: 2032-11-01

Abstract

The utility model discloses a power wire and cable tensile test device relates to power wire and cable test technical field. The utility model discloses in: the fixed support is provided with a longitudinal guide rail mechanism and a top hanging structure, and the upper clamping ring is hung and connected below the top hanging structure. The upper side of the lifting platform is provided with an air cylinder mechanism and a negative pressure device communicated with the air cylinder mechanism, the bottom of the air cylinder mechanism is embedded with an inner cavity distance sensing module used for sensing and detecting the distance of a piston, the outer side end of an output shaft rod is provided with an upper connecting mechanism, and the upper connecting mechanism is connected with a lower clamping ring in a buckling mode. The longitudinal guide rail mechanism is provided with a detection slide block which moves longitudinally, the detection slide block is connected with a detection ring which is sleeved on the periphery of the wire and cable sample, and a plurality of sensing probes which are uniformly distributed are embedded in the inner wall of the detection ring. The utility model discloses reduce the unfavorable factor when long distance wire and cable sample test, reduced test area, carried out comparatively accurate, comprehensive tensile test to long distance wire and cable sample.

Description

Tensile testing device for power wires and cables

Technical Field

The utility model relates to a power line cable tests technical field, especially relates to a power line cable tensile test device.

Background

Electric power wire or cable are at the laying process, especially some overhead line's the laying process, and long distance line cable both ends receive great degree traction, even wire cable inner conductor still can switch on, and great degree deformation takes place for outside insulating layer local position, also can influence wire cable's whole insulation protection effect. When the wire and cable are tested, if the wire and cable sample is too short, deformation rate to a certain degree occurs, the actually occurring deformation length or the texture characteristic on the insulating layer surface area changes less, accurate measurement is not easy to perform, the test is possibly not accurate enough, and if the wire and cable sample is too long, the occupied area is increased. And when the wire and cable sample is taken a sample, the length of the sample has deviation, and the wire and cable sample with the deviation in size is not easy to put into the testing equipment at a certain fixed position and is accurately tested.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a power line cable tensile testing arrangement to unfavorable factor when having reduced the test of long distance wire and cable sample has reduced test area, carries out comparatively accurate, comprehensive tensile test to long distance wire and cable sample.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model provides a power line cable tensile test device, including being used for carrying out the workstation of testing to the wire and cable sample, workstation upside fixed mounting has fixed bolster, elevating platform, and the fixed bolster is installed longitudinal rail mechanism, is hung the structure on the top, and wire and cable sample installs the upper clamp ring in the upper end, and wire and cable sample lower extreme is installed down and is pressed from both sides the ring, goes up the clamp ring and hangs the connection and hang the structure below on the top. The elevating platform upside disposes cylinder mechanism and the negative pressure device who communicates with cylinder mechanism, the built-in piston of cylinder mechanism, the bottom of cylinder mechanism inlays and is equipped with the inner chamber distance sensing module that is used for the sensing to detect the piston distance, cylinder mechanism includes the output axostylus axostyle of being connected with the piston, coupling mechanism is installed to output axostylus axostyle outside end, it is connected with lower clamp ring buckle to go up coupling mechanism, it disposes the pressure sensing module that is used for the sensing to detect coupling mechanism and lower clamp ring buckle connected state to go up coupling mechanism, negative pressure device output side disposes the atmospheric pressure valve. The longitudinal guide rail mechanism is provided with a detection sliding block which moves longitudinally, the detection sliding block is connected with a detection ring which is sleeved on the periphery of the wire and cable sample, and a plurality of sensing probes which are uniformly distributed are embedded in the inner wall of the detection ring.

As the utility model discloses well power line cable tensile test device's an preferred technical scheme: the longitudinal guide rail mechanism is provided with a linear motor for driving the detection slide block to move directionally and a position sensing belt for sensing and detecting the real-time position of the detection slide block.

As the utility model discloses well power line cable tensile test device's an preferred technical scheme: the lower end of the cylinder mechanism is connected with a lifting frame, the lifting frame is positioned and installed at the position of the lifting platform, a transmission gear is installed inside the lifting platform, the lifting frame is provided with a tooth mouth plate meshed and connected with the transmission gear, and the lifting platform is provided with a hand-operated rod connected with the transmission gear.

As the utility model discloses well power line cable tensile test device's an preferred technical scheme: the upper connecting mechanism comprises at least one group of buckle connecting plates capable of rotating freely, and the lower clamping ring is provided with a clamping groove structure connected with the buckle connecting plates in a clamping manner. The upper connecting mechanism is provided with a longitudinal guide groove, an inner guide rail is arranged in the longitudinal guide groove, a longitudinal sliding block is arranged at the position of the inner guide rail, the outer side end of the longitudinal sliding block is connected with the buckle connecting plate through a rotating shaft structure, and the pressure sensing module is embedded at the top position of the longitudinal guide groove.

As the utility model discloses well power line cable tensile test device's an preferred technical scheme: the negative pressure device or the air cylinder mechanism is provided with an air pressure sensor, one side of the negative pressure device is provided with an air guide end, the air pressure valve is arranged at the position of the air guide end, the lower part of the air cylinder mechanism is provided with an air faucet, and the air guide end is connected with the air faucet through an air guide tube.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a set up vertical fixed bolster, it hangs mechanism to dispose the top on the fixed bolster, be used for the vertical longer wire and cable sample that suspends in midair, simultaneously at downside configuration cylinder mechanism, coupling mechanism in the configuration of cylinder mechanism output, be connected with wire and cable sample lower extreme buckle through last coupling mechanism, accomplish the vertical location to the wire and cable sample, and through the elevating platform, the different wire and cable sample of length size is matchd to the crane, utilize the length of inner chamber apart from the wire and cable sample among the sensing detection tensile test process of sensing module to drag the change, utilize longitudinal rail mechanism, detect the slider, detect the ring, to the wire and cable sample surface deformation in the tensile test process, all-round scanning detection is carried out in chap etc..

Drawings

Fig. 1 is the utility model discloses well power line cable tensile test device's overall structure schematic diagram.

Fig. 2 is a partially enlarged schematic structural view of a portion a in fig. 1.

Fig. 3 is a (top) view of the detection ring of the present invention.

Fig. 4 is a schematic view of the directional movement of the middle detection slide block and the piston of the present invention.

Fig. 5 is a schematic view (front view) of the longitudinal rail mechanism of the present invention.

Fig. 6 is a schematic diagram of the cooperation of the middle lifting platform and the lifting frame of the utility model.

Fig. 7 is a schematic view of the connection and cooperation between the upper connection mechanism and the lower clamp ring according to the present invention.

Description of reference numerals:

1-a workbench; 2-fixing the bracket; 3-longitudinal guide rail mechanism, 301-linear motor, 302-position sensing tape; 4-detecting the slide block; 5-connecting a bracket; 6-detection ring, 601-sensing probe; 7-a top-hung structure; 8-an upper clamping ring; 9-wire and cable samples; 10-lower clamping ring, 1001-clamping groove structure; 11-lifting table, 1101-transmission gear; 12-a lifting frame, 1201-a tooth mouth plate; 13-cylinder mechanism, 1301-piston, 1302-output shaft, 1303-air tap; 14-upper connecting mechanism, 1401-snap connecting plate, 1402-longitudinal guide groove, 1403-longitudinal slide block, 1404-inner guide rail and 1405-pressure sensing module; 15-negative pressure device, 1501-air guide end; 16-a pneumatic valve; 17-an airway tube; 18-a hand-operated lever; 19-lumen distance sensing module.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

Referring to fig. 1, a fixing support 2, a lifting platform 11 and a negative pressure device 15 are fixedly installed on the upper side of a workbench 1, a vertical longitudinal guide rail mechanism 3 is installed on the fixing support 2, a top hanging structure 7 is installed on the top of the fixing support 2, an upper clamping ring 8 is fixedly installed on the upper side end of an electric wire and cable sample 9, a lower clamping ring 10 is fixedly installed on the lower side end of the electric wire and cable sample 9, the top hanging structure 7 is provided with a hanging structure, and the upper clamping ring 8 is connected with the hanging structure of the top hanging structure 7. An air cylinder mechanism 13 is arranged above the lifting platform 11, a negative pressure device 15 is communicated with the air cylinder mechanism 13, an output shaft of the air cylinder mechanism 13 faces upwards, an upper connecting mechanism 14 is arranged at the upper side end of the output shaft of the air cylinder mechanism 13, the upper connecting mechanism 14 is matched and connected with a lower clamping ring 10 at the lower side end of the wire and cable sample 9, and a hand lever 18 for adjusting the height position of the air cylinder mechanism 13 is further arranged on the lifting platform 11.

Referring to fig. 2, a lifting frame 12 is installed on a lifting table 11, the bottom of a cylinder mechanism 13 is embedded and fixed in the lifting frame 12, an inner cavity distance sensing module 19 is installed at the bottom of an inner cavity of the cylinder mechanism 13, and the inner cavity distance sensing module 19 can perform distance sensing detection on a piston 1301 in the cylinder mechanism 13. An output shaft rod 1302 is fixedly connected to the upper side of a piston 1301 of the cylinder mechanism 13, an upper connecting mechanism 14 is installed at the upper side end of the output shaft rod 1302, two freely rotatable snap connecting plates 1401 are arranged on the upper connecting mechanism 14, and after the position of the cylinder mechanism 13 is adjusted, the snap connecting plates 1401 can be in snap connection with a lower clamping ring 10 at the lower side end of the wire and cable sample 9. An air nozzle 1303 is arranged at the lower part of the air cylinder mechanism 13, the air nozzle 1303 is connected with an air duct 17, the other end of the air duct 17 is connected with an air duct end 1501 of the negative pressure device 15, and an air pressure valve 16 is installed at the air duct end 1501 of the negative pressure device 15 (for matching with the control process of the test, an air pressure sensing module can be installed on the air cylinder mechanism 13 or the negative pressure device 15 or a corresponding pipeline).

Referring to fig. 3, one end of the connecting bracket 5 is fixedly connected to the detecting slider 4 (see fig. 1), the other end of the connecting bracket 5 is fixedly connected to the detecting ring 6, a plurality of sensing probes 601 are embedded in the inner side wall of the detecting ring 6, and the sensing probes 601 can select to detect the photoelectric distance sensing probes of radial changes of the electric wire and cable sample 9 or detect the cracking degree of the outer surface of the electric wire and cable sample 9 according to the testing requirement.

Referring to fig. 4, when the wire and cable sample 9 is tested and installed, if the length of the wire and cable sample 9 is not standard, the hand lever 18 can be rotated to adjust the position of the lifting frame 12, so as to adjust the height position of the cylinder mechanism 13. During the process of tensile test of the wire and cable sample 9, the negative pressure device 15 continuously reduces the air pressure in the cylinder mechanism 13, the tensile force applied to the wire and cable sample 9 is continuously increased, the distance between the inner cavity and the piston 1301 in the cylinder mechanism 13 is sensed and detected by the sensing module 19, the longitudinal guide rail mechanism 3 is linearly driven to move the detection slide block 4, and the detection ring 6 is driven to perform sensing scanning on the outer surface of the wire and cable sample 9.

Referring to fig. 5, the longitudinal rail mechanism 3 is provided with a linear motor 301 and a position sensing belt 302 which are vertically distributed, the testing system drives the linear motor 301, the linear motor 301 can drive the detection slider 4 to move up and down, and the position sensing belt 302 can sense and detect the position of the detection slider 4 and transmit position information to the testing system.

Referring to fig. 6, a transmission gear 1101 is arranged in the lifting platform 11, a tooth mouth plate 1201 inserted into the lifting platform 11 is arranged on the lifting frame 12, the tooth mouth plate 1201 is meshed with the transmission gear 1101, a hand-operated lever 18 is arranged outside the lifting platform 11, and the lifting frame 12 is adjusted to move through the hand-operated lever 18 (if the cost allows, a small-sized servo motor can be used for driving the transmission gear 1101 to rotate).

Referring to fig. 7, the lower clamp ring 10 is provided with a slot structure 1001, the upper side end of the clamp link plate 1401 is folded inward, the upper side end of the clamp link plate 1401 is inserted into the slot structure 1001, the upper connecting mechanism 14 moves downward, the longitudinal slider 1403 moves upward in the longitudinal guide slot 1402 along the inner guide rail 1404, the longitudinal slider 1403 is in contact with the pressure sensing module 1405, and after the pressure parameter sensed by the pressure sensing module 1405 reaches a certain value, it indicates that the upper side end of the clamp link plate 1401 is completely fastened and connected with the slot structure 1001 of the lower clamp ring 10, at this time, the negative pressure device 15 performs a certain degree of negative pressure on the cylinder mechanism 13, and in the subsequent negative pressure driving process, the strength of the negative pressure test needs to subtract the negative pressure parameter during initial adjustment, so as to ensure the accuracy of the test parameter.

Example two

The utility model provides a basalt fiber pipeline tensile test method mainly includes as follows content:

firstly, an upper clamping ring 8 and a lower clamping ring 10 are installed at the side end of a wire and cable sample 9, the upper clamping ring 8 is connected with a top hanging structure 7, the wire and cable sample 9 is vertically hung, and a detection ring 6 is sleeved into the wire and cable sample 9 from the bottom of the wire and cable sample 9. The height of the lifting frame 12 is adjusted through the lifting platform 11, and the upper connecting mechanism 14 at the upper end of the output shaft rod 1302 is connected with the lower clamping ring 10 at the lower end of the wire and cable sample 9 in a snap-fit mode.

Secondly, the negative pressure device 15 starts to perform linear negative pressure adjustment on the cylinder mechanism 13, when the pressure sensing module 1405 in the upper connecting mechanism 14 senses and detects a certain pressure intensity, the negative pressure device 15 stops performing negative pressure adjustment on the cylinder mechanism 13 (the current negative pressure intensity is recorded as the initial negative pressure intensity, so that in the subsequent testing process, the difference between the corresponding testing negative pressure intensity and the initial negative pressure intensity is conveniently analyzed, the precision of the whole linear negative pressure test is improved), the inner cavity distance sensing module 19 senses and detects the current initial distance parameter of the piston 1301, the longitudinal guide rail mechanism 3 drives the detection slide block 4 to perform one-way motion along the wire and cable sample 9, and the detection ring 6 performs one-way sensing scanning on the outer surface of the wire and cable sample 9. After the inner cavity distance sensing module 19 senses and detects an initial distance parameter of the piston 1301, the testing system correspondingly analyzes and obtains the height position of the lower side end of the wire and cable sample 9, and the longitudinal guide rail mechanism 3 drives the detection ring 6 to perform sensing scanning on the wire and cable sample 9 between the upper clamping ring 8 and the lower clamping ring 10.

Thirdly, the negative pressure device 15 continues to perform negative pressure air extraction on the cylinder mechanism 13, and the inner cavity distance sensing module 19 senses and detects real-time distance change of the piston 1301. When the air pressure in the air cylinder mechanism 13 is reduced by a fixed value, the air pressure valve 16 is closed once, the longitudinal guide rail mechanism 3 drives the detection slide block 4 to perform one-way movement along the wire and cable sample 9, and the detection ring 6 performs one-way sensing scanning on the outer surface of the wire and cable sample 9 (when the distance between the inner cavity and the sensing detection piston 1301 sensed by the sensing module 19 keeps the initial distance parameter, the longitudinal guide rail mechanism 3 drives the detection ring to perform sensing scanning on the wire and cable sample 9, the air pressure valve 16 is opened, and the negative pressure device 15 continues to linearly reduce the pressure of the air cylinder mechanism 13).

Fourthly, when the distance between the inner cavity distance sensing module 19 and the sensing detection piston 1301 changes, the air pressure valve 16 is closed, the testing system records the air pressure parameters in the current air cylinder mechanism 13, and meanwhile, the longitudinal guide rail mechanism 3 drives the detection ring 6 to perform primary sensing scanning on the electric wire and cable sample 9 in the state.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A tensile testing device for power wires and cables comprises a workbench (1) for testing wire and cable samples (9), and is characterized in that:

a fixed support (2) and a lifting table (11) are fixedly mounted on the upper side of the workbench (1), a longitudinal guide rail mechanism (3) and a top hanging structure (7) are mounted on the fixed support (2), an upper clamping ring (8) is mounted at the upper end of the electric wire and cable sample (9), a lower clamping ring (10) is mounted at the lower end of the electric wire and cable sample (9), and the upper clamping ring (8) is connected below the top hanging structure (7) in a hanging manner;

the upper side of the lifting platform (11) is provided with an air cylinder mechanism (13) and a negative pressure device (15) communicated with the air cylinder mechanism (13), a piston (1301) is arranged in the air cylinder mechanism (13), an inner cavity distance sensing module (19) used for sensing and detecting the distance of the piston (1301) is embedded in the bottom of the air cylinder mechanism (13), the air cylinder mechanism (13) comprises an output shaft rod (1302) connected with the piston (1301), an upper connecting mechanism (14) is installed at the outer side end of the output shaft rod (1302), the upper connecting mechanism (14) is in snap-fit connection with the lower clamping ring (10), the upper connecting mechanism (14) is provided with a pressure sensing module (1405) used for sensing and detecting the snap-fit connection state of the upper connecting mechanism (14) and the lower clamping ring (10), and the output side of the negative pressure device (15) is provided with a pneumatic valve (16);

longitudinal rail mechanism (3) dispose longitudinal movement's detection slider (4), it establishes at wire and cable sample (9) outlying detection ring (6) to detect slider (4) be connected with the cover, it inlays sensing probe (601) that are equipped with a plurality of evenly distributed to detect ring (6) inner wall.

2. The tensile testing device for the power wire and cable according to claim 1, wherein:

the longitudinal guide rail mechanism (3) is provided with a linear motor (301) for driving the detection sliding block (4) to move directionally and a position sensing belt (302) for sensing and detecting the real-time position of the detection sliding block (4).

3. The power wire and cable tensile test device of claim 1, wherein:

the utility model discloses a hydraulic lifting mechanism, including cylinder mechanism (13), cylinder mechanism (13) downside end is connected with crane (12), crane (12) fixed position is installed in elevating platform (11) position department, elevating platform (11) internally mounted has drive gear (1101), crane (12) dispose with drive gear (1101) meshing connection's tooth mouth board (1201), elevating platform (11) dispose hand rocker (18) of being connected with drive gear (1101).

4. The power wire and cable tensile test device of claim 1, wherein:

the upper connecting mechanism (14) comprises at least one group of buckle connecting plates (1401) capable of freely rotating, and the lower clamping ring (10) is provided with a clamping groove structure (1001) in clamping connection with the buckle connecting plates (1401);

the upper connecting mechanism (14) is provided with a longitudinal guide groove (1402), an inner guide rail (1404) is arranged in the longitudinal guide groove (1402), a longitudinal sliding block (1403) is installed at the position of the inner guide rail (1404), the outer side end of the longitudinal sliding block (1403) is connected with the buckle connecting plate (1401) through a rotating shaft structure, and the pressure sensing module (1405) is embedded at the top position of the longitudinal guide groove (1402).

5. The power wire and cable tensile test device of claim 1, wherein:

negative pressure device (15) or cylinder mechanism (13) dispose air pressure sensor, negative pressure device (15) one side is provided with air guide end (1501), install air guide end (1501) position department in air pressure valve (16), cylinder mechanism (13) lower part position is provided with air cock (1303), be connected through air duct (17) between air guide end (1501) and air cock (1303).