Accurate test equipment of cable resistance
Technical Field
The utility model relates to the technical field of resistance testing, in particular to accurate testing equipment for cable resistance.
Background
In the production process of a cable conductor, resistance test needs to be carried out on a cable core, and the conventional test method mainly comprises the steps of manually holding two test probes to enable the cable core to be electrified, observing the resistance value and judging whether the resistance value meets the requirement or not.
Most of existing cable resistance tests are manually operated, and because manual double hands simultaneously clamp and detect cable cores at two ends of a cable through clamping probes, the operation difficulty is large, the operation is complex, the phenomena of sliding and falling are easy to occur, the contact between the probes and the cable cores is unstable, and the problem of resistance detection accuracy is reduced.
SUMMERY OF THE UTILITY MODEL
Based on the technical problem that most of existing cable resistance tests are manually operated, due to the fact that manual double hands simultaneously clamp and detect cable cores at two ends of a cable through clamping probes, operation difficulty is high, operation is complex, sliding and falling phenomena are prone to occurring, contact between the probes and the cable cores is unstable, and accordingly resistance detection accuracy is reduced, the utility model provides the accurate cable resistance test equipment.
The utility model provides accurate cable resistance testing equipment which comprises a base, wherein a resistance meter body is fixedly arranged on the upper surface of the base, a first fixed block and a second fixed block which are symmetrically distributed are fixedly connected to the upper surface of the base, a rotating rod is fixedly sleeved on one side surface of the first fixed block through a bearing, and one end of the rotating rod penetrates through and extends to one side surface of the second fixed block;
the surface of one end of bull stick is provided with test adjusting device, and test adjusting device includes the carousel, a side surface of carousel with the fixed surface connection of one end of bull stick.
Preferably, the surface of the rotating rod is respectively provided with a left-handed thread and a right-handed thread by taking the center as a boundary, the outer surface of the left-handed thread is sleeved with a left-handed thread sleeve, and the outer surface of the right-handed thread is sleeved with a right-handed thread sleeve;
through the technical scheme, the rotary disc plays a role in conveniently driving the rotary rod to rotate, the left-handed thread sleeve and the right-handed thread sleeve move relatively to be adjusted when the rotary rod rotates clockwise, and the left-handed thread sleeve and the right-handed thread sleeve move relatively to be adjusted when the rotary rod rotates anticlockwise.
Preferably, the lower surfaces of the left-handed thread sleeve and the right-handed thread sleeve are both contacted with the upper surface of the base, the upper surfaces of the left-handed thread sleeve and the right-handed thread sleeve are both fixedly connected with mounting blocks, and the two mounting blocks are symmetrically distributed by taking the axis of the base as the center;
through the technical scheme, the left-handed thread sleeve and the right-handed thread sleeve move to drive the two mounting blocks to move oppositely and back to back.
Preferably, a through hole is formed in the surface of one side of the mounting block, a thread groove is formed in the upper surface of the mounting block, a hand-screwed bolt is connected to the inner wall of the thread groove in a threaded manner, and one end of the hand-screwed bolt penetrates through and extends into the through hole;
through above-mentioned technical scheme, the hand is twisted the bolt and is played the effect of carrying out extrusion fixed to the cable surface in the through-hole.
Preferably, the outer surface of one end of the hand-screwed bolt is fixedly sleeved with an arc-shaped pressing block through a bearing, the surface of one side of the mounting block is fixedly connected with a first conductive clamping block, the surface of one side of the mounting block is fixedly connected with a fixed plate, the inner wall of the fixed plate is movably sleeved with an insulating guide rod, one end of the insulating guide rod is fixedly connected with a pulling block, and the other end of the insulating guide rod is fixedly connected with a second conductive clamping block;
through above-mentioned technical scheme, the inboard fixedly connected with slipmat of arc briquetting plays the cooperation hand and twists the bolt and carry out the extrusion fixed effect to the cable surface, and first electrically conductive clamp splice and the electrically conductive clamp splice of second are mutually supported, play and carry out the effect of centre gripping to the cable core of different diameters, and the electrically conductive clamp splice outside of second is connected with the wire that is used for the circular telegram to detect.
Preferably, a return spring is movably sleeved on the outer surface of the insulating guide rod, one end of the return spring is fixedly connected with the lower surface of the fixing plate, and the other end of the return spring is fixedly connected with the outer side of the second conductive clamping block;
through above-mentioned technical scheme, reset spring uses through the cooperation of insulating guide bar, plays the effect that drives the electrically conductive clamp splice of second and reset and remove and press from both sides the cable core tightly.
The beneficial effects of the utility model are as follows:
the testing and adjusting device is arranged on the surface of one end of the rotating rod and comprises a rotary disc, one side surface of the rotary disc is fixedly connected with one end surface of the rotating rod, and therefore the purpose of facilitating stable clamping and detection of cables is achieved, the cable resistance detection precision is improved, and the testing and adjusting device has the effect of conducting clamping detection on cables of different lengths and different diameters.
Drawings
FIG. 1 is a schematic diagram of a cable resistance precision test apparatus;
FIG. 2 is an enlarged view of the structure A in FIG. 1 of the precise testing equipment for the resistance of the cable;
fig. 3 is a right side sectional view of a mounting block structure of a cable resistance precision testing apparatus.
In the figure: 1. a base; 2. a resistance meter body; 3. a first fixed block; 4. a second fixed block; 5. a rotating rod; 6. a turntable; 61. a left-handed thread sleeve; 62. right-hand thread sleeves; 63. mounting blocks; 64. a through hole; 65. screwing the bolt by hand; 66. an arc-shaped pressing block; 67. a first conductive clamping block; 68. a fixing plate; 69. an insulating guide rod; 610. pulling the block; 611. a second conductive clamping block; 612. a return spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, the accurate testing equipment for the cable resistance comprises a base 1, wherein a resistance meter body 2 is fixedly installed on the upper surface of the base 1, a first fixed block 3 and a second fixed block 4 which are symmetrically distributed are fixedly connected to the upper surface of the base 1, a rotating rod 5 is fixedly sleeved on one side surface of the first fixed block 3 through a bearing, and one end of the rotating rod 5 penetrates through and extends to one side surface of the second fixed block 4;
the one end surface of bull stick 5 is provided with test adjusting device, and test adjusting device includes carousel 6, and a side surface of carousel 6 and the one end fixed surface of bull stick 5 are connected.
Further, the surface of the rotating rod 5 is provided with a left-handed thread and a right-handed thread by taking the center as a boundary, the outer surface thread of the left-handed thread is sleeved with a left-handed thread sleeve 61, the outer surface thread of the right-handed thread is sleeved with a right-handed thread sleeve 62, the turntable 6 plays a role in conveniently driving the rotating rod 5 to rotate, the left-handed thread sleeve 61 and the right-handed thread sleeve 62 move relatively to adjust when the rotating rod 5 rotates clockwise, and the left-handed thread sleeve 61 and the right-handed thread sleeve 62 move oppositely to adjust when the rotating rod 5 rotates anticlockwise.
Further, the lower surfaces of the left-handed thread sleeve 61 and the right-handed thread sleeve 62 are in contact with the upper surface of the base 1, the upper surfaces of the left-handed thread sleeve 61 and the right-handed thread sleeve 62 are fixedly connected with mounting blocks 63, the two mounting blocks 63 are symmetrically distributed by taking the axis of the base 1 as the center, and the left-handed thread sleeve 61 and the right-handed thread sleeve 62 move to drive the two mounting blocks 63 to move relatively and oppositely.
Further, a through hole 64 is formed in one side surface of the mounting block 63, a thread groove is formed in the upper surface of the mounting block 63, a hand-screwed bolt 65 is connected to the inner wall of the thread groove in a threaded manner, one end of the hand-screwed bolt 65 penetrates through and extends into the through hole 64, and the hand-screwed bolt 65 plays a role in extruding and fixing the cable surface in the through hole 64.
Further, the outer surface of one end of the hand-screwed bolt 65 is fixedly sleeved with an arc-shaped pressing block 66 through a bearing, one side surface of the mounting block 63 is fixedly connected with a first conductive clamping block 67, one side surface of the mounting block 63 is fixedly connected with a fixing plate 68, an insulating guide rod 69 is movably sleeved on the inner wall of the fixing plate 68, one end of the insulating guide rod 69 is fixedly connected with a pulling block 610, the other end of the insulating guide rod 69 is fixedly connected with a second conductive clamping block 611, the inner side of the arc-shaped pressing block 66 is fixedly connected with an anti-slip pad, the effect of extruding and fixing the cable surface by matching the hand-screwed bolt 65 is achieved, the first conductive clamping block 67 is matched with the second conductive clamping block 611, the effect of clamping cable cores with different diameters is achieved, and the outer side of the second conductive clamping block 611 is connected with a lead for power-on detection.
Further, a return spring 612 is movably sleeved on the outer surface of the insulating guide rod 69, one end of the return spring 612 is fixedly connected with the lower surface of the fixing plate 68, the other end of the return spring 612 is fixedly connected with the outer side of the second conductive clamping block 611, and the return spring 612 is used in cooperation with the insulating guide rod 69 to drive the second conductive clamping block 611 to reset and move so as to clamp the cable core.
Be provided with test adjusting device through the one end surface that sets up bull stick 5, and test adjusting device includes carousel 6, and a side surface of carousel 6 and the one end fixed surface of bull stick 5 are connected, have reached and have been convenient for stabilize centre gripping and detection to the cable to improve cable resistance and detect the precision, and have the effect that carries out the centre gripping to the cable of different length and different diameters and detect.
The working principle is as follows: step one, an operator rotates the turntable 6 to drive the rotating rod 5 to rotate clockwise, the rotation of the rotating rod 5 drives the left-handed thread sleeve 61 and the right-handed thread sleeve 62 to move relatively, thereby driving the two mounting blocks 63 to move relatively, stopping the rotation of the operator according to the length of the cable, and during the detection, the pulling block 610 is pulled upwards first, the pulling block 610 drives the second conductive clamping block 611 to move upwards through the insulating guide rod 69, the return spring 612 starts to contract, at this time, one end of the cable passes through the through hole 64 and the cable core of the cable is positioned at the inner side of the first conductive clamping block 67, then the pulling block 610 is loosened, the return effect of the return spring 612 drives the second conductive clamping block 611 to move downwards through the insulating guide rod 69, the cable core is clamped by matching with the first conductive clamping block 67, the hand-screwed bolt 65 is rotated, one end of the hand-screwed bolt 65 drives the arc-shaped pressing block 66 to extrude and fix the cable, and the cable core is prevented from being partially loosened;
and step two, after the other end of the cable is clamped according to the method, starting the resistance surface body, and carrying out resistance test on the cable core through the conducting wires connected with the two second conductive clamping blocks 611 by the resistance surface body.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.