Flexible calipers of underground cable detector

Abstract

The utility model discloses a flexible caliper of an underground cable detector, which comprises a connecting block and a flexible wire, one end of the connecting block is electrically connected with a lead, one end of the flexible wire is electrically connected with the connecting block, and the other end of the flexible wire is inserted into a slot arranged on the surface of the connecting block through a fixing block. The fixed block extrudes the arc-shaped block to move into the movable groove and compress the spring, the arc-shaped block makes contact with the arc-shaped groove in the surface of the fixed block under continuous movement of the fixed block, the spring rebounds to enable the arc-shaped block to be clamped into the arc-shaped groove, and the two sets of protruding blocks on the surface of the fixed block make contact with the clamping blocks; when the flexible caliper is pulled, the clamping block is extruded upwards, and the clamping block rebounds and is clamped into the clamping groove in the surface of the convex block under continuous movement of the convex block, so that the fixed block is clamped and fixed, and the problem that when the flexible caliper is pulled, the fixed block is separated from the slot of the connecting block, and signal transmission is interrupted or unstable is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground cable detectors, and in particular relates to a flexible clamp of an underground cable detector. Background Art

[0002] The flexible clamp of the underground cable detector is mainly used for signal coupling. When detecting underground cables, it is necessary to inject a signal of a specific frequency into the cable to facilitate subsequent detection work. The flexible clamp can serve as a signal conduction medium to couple the signal current generated by the detector to the cable.

[0003] Currently, when coupling a flexible clamp with a cable, it is necessary to pass one end of the flexible clamp through the bottom of the cable, bend it into a ring, and then insert the plug at one end of the flexible clamp into the connecting block at the other end, so that the conductive line of the flexible clamp forms a closed loop, and then the flexible clamp bent into a ring is put on the surface of the cable and contacts the outer layer of the cable, so that the current can effectively flow around the cable. However, when the plug at one end of the flexible clamp is inserted into the connecting block at the other end, since the connecting block needs to be connected to a cable detector, the flexible clamp needs to be pulled when moving the cable detector, which makes the connection between the plug of the flexible clamp and the connecting block loose. If the pulling force is too large or the direction is inappropriate, the plug may be displaced in the connecting block and become loose, thereby interrupting or making the signal transmission unstable. Utility Model Content

[0004] The purpose of the utility model is to provide a flexible clamp for an underground cable detector to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a flexible clamp for an underground cable detector, comprising:

[0006] A connecting block, wherein one end of the connecting block is electrically connected to a wire and one end of the wire is connected to a plug;

[0007] A flexible wire, one end of the flexible wire is electrically connected to the connecting block, and the other end of the flexible wire is inserted into a slot provided on the surface of the connecting block through a fixed block. The plug-in connection between the fixed block and the connecting block is fixed by a fixed component. The card block and the arc block engaged by the fixed component are respectively engaged with the card slot and the arc groove on the surface of the fixed block to fix the fixed block inserted into the slot.

[0008] Preferably, the fixing assembly includes a pressure plate and a spring, the clamping blocks are provided in two groups and the two groups of clamping blocks are respectively connected to the top and bottom surfaces of the connecting block, and the pressure plates are provided in two groups and are respectively connected to one end of the two groups of clamping blocks.

[0009] Preferably, the top and bottom surfaces of the fixing block are connected with protrusions, the card slots are provided with two groups and the two groups of card slots are respectively provided on the surfaces of the two groups of protrusions, and the card blocks are engaged with the card slots.

[0010] Preferably, a movable groove is provided on the surface of the connecting block and at the top and bottom of the slot, the arc block is arranged in the movable groove and one end of the arc block protrudes into the slot, and the two ends of the arc block are slidably connected to the sliding groove provided in the connecting block through a slider.

[0011] Preferably, the springs are provided in two groups and are respectively arranged in two groups of movable grooves, and the two ends of the springs are respectively connected to the connecting block and the arc block.

[0012] Preferably, the arc grooves are provided in two groups and the two groups of arc grooves are respectively provided on the top and bottom surfaces of the fixing block, and the arc block is engaged with the arc grooves in a coordinated manner.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) The flexible wire connected to one end of the connecting block is passed through the bottom of the cable and then bent into a ring shape, and the fixing block is inserted into the slot on the surface of the connecting block, so that the flexible wire is bent into a closed loop and can be hung on the exposed surface of the cable core wire, and the plug at one end of the wire on the surface of the connecting block is inserted into the socket of the cable detector, so that the signal emitted by the cable detector can be coupled to the cable through the contact between the flexible wire and the exposed surface of the cable core wire, so that the cable can carry the signal, which is convenient for subsequent path tracking and identification operations. The flexible characteristics of the flexible wire enable the flexible wire to fit on cables of different thicknesses, ensuring that the signal can be stably injected.

[0015] (2) When the fixed block is inserted into the slot on the surface of the connecting block, when the fixed block contacts the arc block in the slot, the arc block is squeezed to move into the movable slot and compress the spring. As the fixed block continues to move, the arc block contacts the arc slot on the surface of the fixed block, and the spring rebounds to make the arc block stuck in the arc slot. When the arc block is stuck in the arc slot, the two groups of protrusions on the surface of the fixed block contact the card block and squeeze the card block upward. As the protrusions continue to move, the card block rebounds and is stuck in the card slot on the surface of the protrusion, thereby completing the clamping and fixing of the fixed block, avoiding the problem that the fixed block is detached from the slot of the connecting block when the flexible clamp is pulled, causing signal transmission interruption or instability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is a side view of the utility model;

[0018] Figure 3This is a schematic diagram of the hinged connection between the pressing plate and the connecting block of the utility model;

[0019] Figure 4 This is a side view of the hinged connection between the pressing plate and the connecting block of the utility model.

[0020] In the figure: 1. Connecting block; 2. Wire; 3. Plug; 4. Flexible wire; 5. Fixed block; 6. Slot; 7. Card block; 8. Arc block; 9. Card slot; 10. Arc slot; 11. Pressure plate; 12. Spring; 13. Movable slot; 14. Bump; 15. Torsion spring; 16. Hinge seat; 17. Pressure plate bracket; 18. Spacing; 19. Hinge shaft. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides Figure 1-4 The flexible clamp of an underground cable detector shown includes:

[0023] A connection block 1, one end of which is electrically connected to a wire 2 and one end of which is connected to a plug 3;

[0024] A flexible wire 4, one end of which is electrically connected to the connecting block 1, and the other end of the flexible wire 4 is inserted into a slot 6 provided on the surface of the connecting block 1 through a fixing block 5. The fixing block 5 and the connecting block 1 are fixed at the joint by a fixing component. The fixing block 7 and the arc block 8 that are clamped by the fixing component are respectively clamped with the slot 9 and the arc groove 10 on the surface of the fixing block 5 to fix the fixing block 5 inserted into the slot 6.

[0025] The fixing assembly includes a pressure plate 11 and a spring 12. The clamping blocks 7 are provided in two groups and the two groups of clamping blocks 7 are respectively connected to the top and bottom surfaces of the connecting block 1. The pressure plates 11 are provided in two groups and are respectively connected to one end of the two groups of clamping blocks 7.

[0026] The top and bottom surfaces of the fixing block 5 are connected with protrusions 14 , and the card slots 9 are provided in two groups, and the two groups of card slots 9 are respectively provided on the surfaces of the two groups of protrusions 14 , and the card block 7 is engaged with the card slots 9 .

[0027] The surface of the connecting block 1 is provided with a movable groove 13 at the top and bottom of the slot 6. The arc block 8 is arranged in the movable groove 13 and one end of the arc block 8 protrudes into the slot 6. The two ends of the arc block 8 are slidably connected to the sliding groove provided in the connecting block 1 through a slider. When the arc block 8 moves, it can drive the slider to slide in the sliding groove, thereby enhancing the stability of the movement of the arc block 8.

[0028] The spring 12 is provided with two groups and is respectively provided in two groups of movable grooves 13. The two ends of the spring 12 are respectively connected to the connecting block 1 and the arc block 8. The arc groove 10 is provided with two groups and the two groups of arc grooves 10 are respectively provided on the top and bottom surfaces of the fixed block 5. The arc block 8 is matched with the arc groove 10 and is engaged. When the fixed block 5 continues to move, the arc block 8 contacts the arc groove 10 on the surface of the fixed block 5. The spring 12 rebounds to make the arc block 8 snap into the arc groove 10 to fix the fixed block 5 once, and the engagement of the card block 7 with the card slot 9 can fix the fixed block 5 for a second time, thereby enhancing the stability of the connection between the fixed block 5 and the slot 6.

[0029] The flexible clamp of the underground cable detector is constructed by passing the flexible wire 4 connected to one end of the connecting block 1 through the bottom of the cable and then bending it into a ring shape, and inserting the fixing block 5 into the slot 6 on the surface of the connecting block 1, so that the flexible wire 4 is bent into a ring-shaped closed loop and can be hung on the exposed surface of the cable core wire, and the plug 3 at one end of the wire 2 on the surface of the connecting block 1 is inserted into the socket of the cable detector, so that the signal emitted by the cable detector can be coupled to the cable through the contact between the flexible wire 4 and the exposed surface of the cable core wire, so that the cable can carry the signal, which is convenient for subsequent path tracking and identification operations. The flexible characteristics of the flexible wire 4 enable the flexible wire 4 to fit on cables of different thicknesses, ensuring that the signal can be stably injected.

[0030] The pressure plate 11 and the connecting block 1 are connected in a hinged manner, specifically: a symmetrical pressure plate bracket 17 is installed on the pressure plate 11, and a symmetrical L-shaped hinge seat 16 is installed on the connecting block 1, and the pressure plate bracket 17 is located on the inner side of the hinge seat 16, and the bottom of the pressure plate bracket 17 is spaced 18 from the hinge seat 16 so that the pressure plate bracket 17 will not interfere with the hinge seat 16 when the pressure plate 11 rotates. The pressure plate bracket 17 and the hinge seat 16 are pinned together by a hinge shaft 19, and a torsion spring 15 is installed on the hinge shaft 19 between the pressure plate brackets 17. One end foot a of the torsion spring 15 is pressed against the surface of the connecting block 1, and the other end foot b is pressed against the surface of the pressure plate 11.

[0031] When the fixing block 5 is inserted into the slot 6 on the surface of the connecting block 1, when the fixing block 5 contacts the arc block 8 in the slot 6, the arc block 8 is squeezed to move into the movable slot 13 and compress the spring 12. Under the continuous movement of the fixing block 5, the arc block 8 contacts the arc groove 10 on the surface of the fixing block 5, and the spring 12 rebounds to make the arc block 8 snap into the arc groove 10. When the arc block 8 is snapped into the arc groove 10, the two groups of protrusions 14 on the surface of the fixing block 5 contact the clamping block 7, squeezing the clamping block 7 upward and pressing the end foot b of the torsion spring 15 downward. Under the continuous movement of the protrusion 14, the clamping block 7 contacts the clamping slot 9, and the end foot b of the torsion spring 15 rebounds, making the clamping block 7 snap into the clamping slot 9 on the surface of the protrusion 14. As a result, under the elastic force of the torsion spring 15, the clamping block 7 can remain clamped with the clamping slot 9, thereby completing the clamping and fixing of the fixing block 5.

[0032] When it is necessary to pull out the fixed block 5 in the slot 6, the pressure plate 11 at one end of the card block 7 is pressed downward with two fingers. When the pressure plate 11 is pressed down, one end of the card block 7 is tilted and presses down the end foot b of the torsion spring 15, so that the card block 7 is disengaged from the card slot 9, and then the fixed block 5 is pulled outward, so that the fixed block 5 squeezes the arc block 8 into the movable groove 13 when moving, so that the fixed block 5 can be pulled out from the slot 6 under the continuous movement of the fixed block 5, thereby completing the insertion and removal of the fixed block 5. After the card block 7 is released, the card block 7 that has been tilted due to the downward pressure can be driven to return to its original position under the elastic force of the end foot b of the torsion spring 15.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flexible clamp for an underground cable detector, characterized in that: include: A connecting block (1), one end of the connecting block (1) being electrically connected to a wire (2) and one end of the wire (2) being connected to a plug (3); A flexible wire (4) is provided, one end of the flexible wire (4) being electrically connected to the connecting block (1), and the other end of the flexible wire (4) being inserted into a slot (6) provided on the surface of the connecting block (1) through a fixing block (5); the insertion portion between the fixing block (5) and the connecting block (1) is fixed by a fixing assembly, and the fixing block (7) and the arc block (8) connected by the fixing assembly are respectively fixed to the fixing slot (9) and the arc groove (10) on the surface of the fixing block (5), thereby fixing the fixing block (5) inserted into the slot (6).

2. The flexible clamp of an underground cable detector according to claim 1, characterized in that: The fixing assembly comprises a pressure plate (11) and a spring (12); the clamping blocks (7) are provided in two groups and the two groups of clamping blocks (7) are respectively connected to the top and bottom surfaces of the connecting block (1); the pressure plates (11) are provided in two groups and are respectively connected to one end of the two groups of clamping blocks (7).

3. The flexible clamp of an underground cable detector according to claim 1, characterized in that: The top and bottom surfaces of the fixing block (5) are connected with protrusions (14), the card slots (9) are provided with two groups, and the two groups of card slots (9) are respectively provided on the surfaces of the two groups of protrusions (14), and the card block (7) is engaged with the card slots (9).

4. The flexible clamp of an underground cable detector according to claim 2, characterized in that: The surface of the connecting block (1) is provided with movable grooves (13) located at the top and bottom of the slot (6); the arc block (8) is arranged in the movable groove (13) and one end of the arc block (8) protrudes into the slot (6); and the two ends of the arc block (8) are slidably connected to the sliding grooves provided in the connecting block (1) via sliders.

5. The flexible clamp of the underground cable detector according to claim 4, characterized in that: The springs (12) are provided in two groups and are respectively arranged in two groups of movable grooves (13). The two ends of the springs (12) are respectively connected to the connecting block (1) and the arc block (8).

6. The flexible clamp of an underground cable detector according to claim 1, characterized in that: The arc grooves (10) are provided with two groups, and the two groups of arc grooves (10) are respectively arranged on the top and bottom surfaces of the fixed block (5), and the arc block (8) is matched and clamped with the arc grooves (10).

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