Core wire checking device for multi-core secondary cable
Technical Field
The invention relates to the technical field of cable core wire checking, in particular to a multi-core secondary cable core wire checking device.
Background
In the process of transformer substation infrastructure and large-scale technical transformation projects, a large number of multi-core secondary cables are used as signal transmission media between equipment control systems such as protection devices and measurement and control devices. The correctness of the cable core wire determines the correctness of secondary equipment signals and control loop wiring, the two ends of a cable to be checked are inserted into the paired terminal block through the secondary cable core wire checking device, and the checking of the multi-core secondary cable core wire is completed by the matching of a main machine end and an auxiliary machine end, for example, a tool for quickly checking the secondary cable core wire with the publication number of CN 110850338A. The core wire is clamped by the wire aligning terminal row through the elastic clamp in the prior art, the hardness of the core wire after the insulating sheath is removed is reduced, the core wire cannot be inserted between the elastic clamps when the strength of the elastic clamps is large, the core wire is easy to break away when the strength of the elastic clamps is small, and particularly, when the core wire of the multi-core secondary cable is subjected to core alignment, the core wire is easy to fall off due to the fact that the core wire is more, the core wire is short in exposed length, and therefore the core wire needs to be placed into the elastic clamps and then fastened through the force application of screws, and the operation steps are complex.
Disclosure of Invention
Aiming at the prior art, the invention provides the multi-core secondary cable core wire checking device, the core wire is inserted to the bottom and then loosened to complete the clamping of the core wire, the core wire is inserted to the bottom and then loosened to complete the loosening of the core wire, the clamping force is increased, meanwhile, the core wire is easier to insert, and the operation is more convenient.
The technical scheme of the invention is realized as follows:
the checking device for the core wires of the multi-core secondary cable comprises a host end and a slave end, wherein the host end and the slave end are both provided with a wire aligning terminal row, the wire aligning terminal row comprises a shell and a plurality of wire clamps, each wire clamp comprises a sliding block, a clamping block, a pushing wheel, a rack, a first gear, a second gear and a third gear, the host end and the slave end are respectively and electrically connected with the sliding block through wires, the front end of the sliding block is provided with a limiting part with a through hole, the racks connected with the limiting part are arranged above two sides of the sliding block, the clamping block is rotatably connected between the two racks, the pushing wheel rotatably connected with the shell is arranged above the clamping block, one end of the pushing wheel is connected with the first gear through a one-way transmission mechanism, the other end of the pushing wheel is connected with the second gear through a one-way transmission mechanism, and the first gear is meshed with the racks, the second gear is meshed with the other rack through a third gear which is connected to the shell in a rotating mode, the contour line of the extrusion wheel is an Archimedes spiral, a first spring is arranged in the shell, and the first spring is used for pushing the sliding block to move forwards.
Further, be equipped with the spout in the shell, the both sides of sliding block are equipped with along the gliding first arch of spout.
Furthermore, a second protrusion for preventing the sliding block from being separated from the shell is arranged above the limiting part.
Furthermore, the bottom of the clamping block is provided with inclined teeth, and the inclined teeth face to the rear of the shell.
Furthermore, the clamping block is provided with a second spring, and the second spring is used for driving the clamping block to be far away from the sliding block.
Furthermore, the extruding and pushing wheel is provided with an indication strip, and the shell positioned above the extruding and pushing wheel is provided with an observation window.
Furthermore, two the end of rack passes through horizontal pole interconnect, two the end of rack is connected with the sliding block through the montant respectively.
Further, the wire is electrically connected with the first spring, and the first spring is a metal spring.
The invention has the beneficial effects that:
the line terminal row includes a plurality of wire clamps, can install and connect many with the heart yearn. The invention can greatly accelerate the connection speed of the wire terminal strip in practical application and improve the working efficiency. The size of the included angle between the outer contour line of the extrusion wheel and the clamping block is related to the clamping force of the clamping block on the core wire, the extrusion wheel with the small included angle between the outer contour line and the clamping block can be adopted, and the clamping force of the clamping block on the core wire is improved under the condition of using smaller force. The core wire can be locked after being inserted and pushed to the bottom for the first time and loosened, the core wire cannot fall off under the action of external force, and the locked state can be released when the sliding block is pushed to move by applying smaller force again under the locked state of the core wire. According to the invention, the core wire can be clamped by loosening after being inserted to the bottom, and can be loosened by loosening after being inserted to the bottom again, so that the clamping force is increased, the core wire is easier to insert, and the operation is more convenient.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a perspective view of a core wire checking device for a multi-core secondary cable according to the present invention;
FIG. 2 is a partial cross-sectional view of a pair terminal block of the multi-core secondary cable core collation apparatus of the present invention;
FIG. 3 is a sectional view of a pair terminal block of the multi-core secondary cable core wire collating device of the present invention;
in the figure, 1 a host machine end, 2 a slave machine end, 3 a pair of line terminal rows, 4 a shell, 5 a wire clamp, 6 a sliding block, 7 a clamping block, 8a pushing wheel, 9 a rack, 10 a first gear, 11 a second gear, 12 a third gear, 13 a wire, 14 a through hole, 15 a limiting part, 16 a one-way transmission mechanism, 17 a first spring, 18 a sliding groove, 19 a first bulge, 20 a second bulge, 21 a helical tooth, 22 a second spring, 23 an observation window, 24 an indication strip, 25 a cross rod and 26 a vertical rod.
Detailed Description
In order to better understand the technical content of the invention, specific embodiments are provided below, and the invention is further described with reference to the accompanying drawings.
Referring to fig. 1 to 3, the multi-core secondary cable core wire checking device comprises a host end 1 and a slave end 2, wherein the host end 1 and the slave end 2 are both provided with a pair terminal row 3, the pair terminal row 3 comprises a housing 4 and a plurality of wire clamps 5, each wire clamp 5 comprises a sliding block 6, a clamping block 7, a pushing wheel 8, a rack 9, a first gear 10, a second gear 11 and a third gear 12, the host end 1 and the slave end 2 are respectively and electrically connected with the sliding block 6 through a wire 13, the front end of the sliding block 6 is provided with a limiting part 15 with a through hole 14, racks 9 connected with the limiting part 15 are arranged above two sides of the sliding block 6, the clamping block 7 is rotatably connected between the two racks 9, the pushing wheel 8 rotatably connected with the housing 4 is arranged above the clamping block 7, one end of the pushing wheel 8 is connected with the first gear 10 through a one-way transmission mechanism 16, the other end of the extrusion wheel 8 is connected with a second gear 11 through a one-way transmission mechanism 16, the first gear 10 is meshed with the rack 9, the second gear 11 is meshed with the other rack 9 through a third gear 12 which is rotatably connected to the shell 4, and the contour line of the extrusion wheel 8 is an Archimedes spiral.
The main machine end 1 and the auxiliary machine end 2 are respectively and electrically connected with a sliding block 6 of a pair line terminal row 3 through a wire 13, two ends of a cable core wire are respectively connected on the pair line terminal row 3 of the main machine end 1 and the auxiliary machine end 2, the core wire is inserted into a through hole 14 of a limiting piece 15 positioned at the front end of the sliding block 6 when the pair line terminal row 3 is used, an insulating skin of the core wire is clamped outside the through hole 14, the core wire is used for pushing the sliding block 6 to move towards the inner part of a shell 4 of the insulator terminal row, the sliding block 6 pushed into the shell 4 can be pushed to the initial position under the action of a first spring 17, and the sliding block 6 is continuously driven to reciprocate under the action of external force and spring force. The line terminal row comprises a plurality of conductor clamps 5 which can be installed and connected with a plurality of core wires. The rack 9 fixed on the limiting piece 15 drives the first gear 10 and the third gear 12 engaged with the rack to rotate when moving. The first gear 10 is connected with the pushing wheel 8 through a one-way transmission mechanism 16, when the sliding block 6 moves inwards, the first gear 10 drives the pushing wheel 8 to rotate clockwise, and when the sliding block 6 moves outwards, the first gear 10 does not drive the pushing wheel 8 to rotate. The third gear 12 is engaged with the second gear 11, the second gear 11 is connected with the pushing wheel 8 through a one-way transmission mechanism 16, the second gear 11 does not drive the pushing wheel 8 to rotate when the sliding block 6 moves inwards, and the second gear 11 drives the pushing wheel 8 to rotate clockwise when the sliding block 6 moves outwards. During operation, a core wire is inserted into the through hole 14 of the limiting part 15 by one hand, and the core wire is drawn in a reciprocating manner to drive the sliding block 6 to move in a reciprocating manner, so that the pushing wheel 8 is continuously driven to rotate clockwise. The contour line of the extrusion wheel 8 is an Archimedes spiral line, the extrusion wheel 8 continuously rotates to extrude the clamping block 7 connected between the racks 9 in a rotating mode, and therefore the clamping block 7 is continuously pushed to the sliding block 6, and the core wire which penetrates through the limiting block and is located between the sliding block 6 and the clamping block 7 is clamped tightly. In the use process, when pushing the sliding block 6 to move each time, the core wire is pushed to the bottom and then reset under the action of the first spring 17, and after the core wire is inserted and pushed to the bottom for the first time, one end of the pushing wheel 8, which is far away from the rotating center, is in contact with the clamping when the core wire is reset, so that the core wire is clamped. After the core wire is pushed to the bottom for the second time, one end of the extruding and pushing wheel 8, which is relatively close to the rotating center, is contacted with the clamp when the core wire is reset, so that the core wire is loosened. Therefore, in the operation process, the core wire can be clamped by inserting and pushing the core wire to the bottom and then loosening the core wire after pushing the core wire to the bottom again, and then the core wire can be taken out. In practical application, the invention can greatly accelerate the connection speed of the wire terminal strip 3 and improve the working efficiency. The Archimedes spiral is a track generated by a point leaving a fixed point at a constant speed and simultaneously rotating around the fixed point at a fixed angular speed, and when the extruding and pushing wheel 8 rotates, the clamping block 7 is uniformly pushed to clamp the core wire, so that a larger clamping force can be provided. The size of the included angle between the outer contour line of the extrusion wheel 8 and the clamping block 7 is related to the clamping force of the clamping block 7 on the core wire, the extrusion wheel 8 with the small included angle between the outer contour line and the clamping block 7 can be adopted, and the clamping force of the clamping block 7 on the core wire is improved under the condition of using smaller force. The core wire can be locked after being inserted and pushed to the bottom for the first time and loosened, the core wire cannot fall off under the action of external force, and the locked state can be released when the sliding block 6 is pushed to move by applying smaller force again under the locked state of the core wire. The invention aims to provide a core wire checking device for a multi-core secondary cable, which can clamp the core wire by loosening the core wire after the core wire is inserted to the bottom, can loosen the core wire by loosening the core wire after the core wire is inserted to the bottom again, increases the clamping force, is easier to insert the core wire and is more convenient and faster to operate.
Alternatively, the one-way transmission mechanism 16 may be a ratchet transmission mechanism or a one-way bearing.
Specifically, a sliding groove 18 is formed in the housing 4, and first protrusions 19 sliding along the sliding groove 18 are formed on two sides of the sliding block 6. The first protrusion 19 is fixed on the sliding block 6, so that the sliding block 6 can move along the direction of the sliding groove 18, and the sliding stability of the sliding block 6 is improved.
Specifically, a second protrusion 20 for preventing the sliding block 6 from separating from the housing 4 is disposed above the limiting member 15. The second projection 20 prevents the sliding block 6 from being detached from the housing 4 when the sliding block 6 is reciprocally slid.
Specifically, the bottom of the clamping block 7 is provided with a helical tooth 21, and the helical tooth 21 faces the rear of the housing 4. After the core wire is clamped by the clamping block 7 and the sliding block 6, the helical teeth 21 are contacted with the core wire to improve the friction force, so that the core wire can be locked to prevent the core wire from falling off.
Specifically, the clamping block 7 is provided with a second spring 22, and the second spring 22 is used for driving the clamping block 7 to be away from the sliding block 6. After the second pushing of the slide 6 to move inwards, it is released and the clamping block 7 is disengaged from the core wire under the action of the second spring 22. When putting into the heart yearn again next time, grip block 7 and sliding block 6 separation are convenient for put into the heart yearn.
Specifically, the pushing wheel 8 is provided with an indication strip 24, and the housing 4 above the pushing wheel 8 is provided with an observation window 23. The indication strip 24 can be seen through the observation window 23, and the rotating position of the extrusion wheel 8 can be judged according to the position of the indication strip 24, so that the rotating position of the extrusion wheel 8 can be adjusted conveniently.
Specifically, the tail ends of the two racks 9 are connected with each other through a cross rod 25, and the tail ends of the two racks 9 are respectively connected with the sliding block 6 through a vertical rod 26. The tail ends of the racks 9 are connected through the cross rods 25 and the vertical rods 26, so that the strength of the racks 9 is improved, and the tail ends of the racks 9 can be prevented from deforming.
Specifically, the lead 13 is electrically connected to the first spring 17, and the first spring 17 is a metal spring. The first spring 17 is always connected to the sliding block 6, thus ensuring that the guide is always connected to the core.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.