Ice melting protection device for power grid cable

Abstract

The invention discloses a power grid cable ice-melting protection device, and the device comprises a frame body which comprises a lock catch structure and a live lock structure. The lock catch structure is arranged in the middle of the frame body and is used for fixing a cable; the live lock structures are arranged on the two sides of the frame body and used for being connected with other cables so that the cables can share the force borne by the cables during wire jumping due to the fact that the ice-melting cables generate tension changes. According to the invention, the frame body can be close to the cable, and is fixed with the cable through the lock catch structure arranged on the frame body, and then other cables on two sides of the cable are connected through the live lock structure, so that when ice on a single cable in the three groups of cables is melted, the tension change generated by ice melting can be shared through other cables when the ice on the cable falls off; and the condition of wire jumping is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cable protection devices, and in particular to an ice-melting protection device for power grid cables. Background Art

[0002] When the power grid cable is melted by electric current heating, the melting speed is relatively even because the heating of the section of the power grid cable is relatively uniform. However, due to the different ice thicknesses at different parts of the cable, the time for the ice to fall off after a certain degree of heating is inconsistent. In this way, when the cable is detached within a certain distance, the tension of the cable will change, resulting in the phenomenon of cable jumpering, which can easily lead to cable breakage and cause great economic losses. In view of the above problems, a power grid cable ice melting protection device is proposed to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a power grid cable ice melting protection device to solve the above-mentioned shortcomings, so as to avoid the problem of cable breakage during ice melting.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: a power grid cable ice melting protection device, comprising:

[0005] A frame, the frame comprising a locking structure and a live lock structure;

[0006] The locking structure is arranged at the center of the frame, and the locking structure is used to fix the cable;

[0007] The live lock structure is arranged on both sides of the frame, and is used to connect other cables so as to enable each cable to share the force exerted on the cable when the cable is undergoing ice melting and causing the tension change resulting in the jumper.

[0008] Furthermore, the locking structure includes a trigger unit, a locking claw and a controller;

[0009] The trigger unit is used to contact the cable and send feedback to the controller, and the controller is used to control the locking claws to clamp the cable so that the frame is set on the cable.

[0010] Further, it also includes an adjustment mechanism;

[0011] The adjustment mechanism includes an adjustment gear wheel arranged inside the frame, and

[0012] Adjustment racks relatively distributed on both sides of the adjustment gear disc;

[0013] The two sets of live-lock structures are arranged at the separated ends of the two sets of adjusting racks;

[0014] The frame is provided with an adjusting knob, and the adjusting knob is rotated to drive the adjusting gear disc to operate so as to drive the two sets of the live lock structures to operate relative to each other to connect other cables.

[0015] Further, the live-lock structure includes a contact ring, a movable ring, a moving block and a fixed block;

[0016] The fixing block is fixedly arranged on the adjusting rack;

[0017] The movable block is movably arranged on the fixed block;

[0018] The contact ring is fixedly arranged on the moving block;

[0019] The movable ring is slidably arranged on the contact ring and arranged in parallel with the contact ring;

[0020] The fixed block is provided with a progressive rack, and the outer surface of the movable ring is provided with locking teeth corresponding to the progressive rack;

[0021] The relative movement of the adjusting rack drives the contact ring to contact the cable, the moving block and the contact ring are blocked by the cable and separated from the fixed block, the progressive rack and the locking tooth arranged on the fixed block run relative to each other, driving the movable ring to rotate relative to the contact ring, and the contact ring and the movable ring are closed to lock the cable.

[0022] Furthermore, the moving block is provided with a connecting rod penetrating the fixed block, and the fixed block is provided with a return spring connected to the moving block.

[0023] Furthermore, a limiting sliding groove is provided on one side of the contact ring relative to the movable ring;

[0024] A limiting rib extending into the limiting sliding groove is arranged on one side of the movable ring relative to the contact ring.

[0025] Furthermore, a contact pad is provided on the inner wall of the contact ring so as to enable the contact ring to contact the movable ring before the cable.

[0026] Furthermore, a limit trigger is provided on the contact ring, the limit trigger is used to contact the movable ring after rotation, and the limit trigger is electrically connected to the adjustment motor.

[0027] Furthermore, a support frame is provided at the bottom of the frame, and the support frame is used to support the adjustment rack and limit the moving direction of the adjustment rack. A connecting mechanism is also provided on the frame, and the connecting mechanism is used to connect to the power tower. A connecting piece is provided at the end of the connecting mechanism.

[0028] Furthermore, the frame, the locking structure and the movable lock structure are all made of polyimide.

[0029] The beneficial effects of the present invention are embodied in:

[0030] The present invention can bring the frame close to the cable and fix it to the cable through a locking structure arranged thereon, and then connect other cables on both sides of the cable through a live lock structure, so that when a single cable in the three groups of cables is ice-melted, when ice covering it falls off, the tension change caused by the melting ice can be shared by other cables to avoid the situation of wire jump. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A three-dimensional view of the present invention;

[0032] Figure 2 It is a three-dimensional schematic diagram of the present invention;

[0033] Figure 3 It is a schematic diagram of the implementation of the present invention;

[0034] Figure 4 It is a schematic diagram of the structure of the live lock of the present invention;

[0035] Figure 5 It is a structural diagram of the live lock of the present invention;

[0036] Figure 6 It is another perspective schematic diagram of the present invention.

[0037] In the figure:

[0038] 01. Cables;

[0039] 1. Frame; 11. Adjustment knob;

[0040] 2. Locking structure; 21. Trigger unit; 22. Locking jaws;

[0041] 3. Live lock structure; 31. Contact ring; 311. Limit trigger; 312. Limit slide groove; 32. Movable ring; 321. Locking tooth; 33. Moving block; 34. Fixed block; 341. Progressive rack; 342. Connecting rod; 35. Return spring;

[0042] 4. Adjustment mechanism; 41. Adjustment toothed disc; 42. Adjustment rack;

[0043] 5. Connecting mechanism; 51. Connecting parts. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] See also Figure 1-6 The present invention discloses a power grid cable ice melting protection device, comprising:

[0046] Frame 1;

[0047] A locking structure 2, which is disposed in the center of the frame 1 and is used to fix the cable 01;

[0048] The live-lock structure 3 is arranged on both sides of the frame 1 and is used to connect other cables 01 so that each cable 01 can share the force exerted by the cable 01 when the cable 01 undergoing ice melting generates tension changes and causes jumpering.

[0049] When the power grid cable 01 is individually melted by electric current heating, the present application can be set for cables with severe ice coverage. When the present application is in use, the frame 1 can be brought close to the cable 01 and fixed to the cable 01 by the locking structure 2 provided thereon, and then the other cables 01 on both sides of the cable 01 are connected by the live lock structure 3. When the ice of a single cable 01 among the three groups of cables 01 is melted, the tension change caused by the melting ice can be shared by the other cables 01 when the ice covering it falls off, so as to avoid the situation of wire jumping.

[0050] Specifically, the locking structure 2 includes a trigger unit 21, a locking claw 22 and a controller;

[0051] The trigger unit 21 is used to contact the cable 01 and send feedback to the controller, and the controller is used to control the locking jaws 22 to clamp the cable 01 so that the frame 1 is set on the cable 01.

[0052] With the above-mentioned structural arrangement, when the trigger unit 21 contacts the cable 01 , the locking claw 22 can clamp the cable 01 .

[0053] In the present application, it also includes an adjustment mechanism 4;

[0054] The adjustment mechanism 4 includes an adjustment toothed disc 41 disposed inside the frame 1, and

[0055] Adjustment racks 42 relatively distributed on both sides of the adjustment toothed disc 41;

[0056] The two sets of live-lock structures 3 are arranged at the separated ends of the two sets of adjusting racks 42;

[0057] The frame body 1 is provided with an adjusting knob 11 , and the adjusting knob 11 rotates to drive the adjusting gear disc 41 to operate so as to drive the two sets of the live lock structures 3 to operate relative to each other to connect other cables 01 .

[0058] Furthermore, the live-lock structure 3 includes a contact ring 31, a movable ring 32, a moving block 33 and a fixed block 34;

[0059] The fixing block 34 is fixedly disposed on the adjusting rack 42;

[0060] The moving block 33 is movably arranged on the fixed block 34;

[0061] The contact ring 31 is fixedly arranged on the moving block 33;

[0062] The movable ring 32 is slidably disposed on the contact ring 31 and is arranged in parallel with the contact ring 31;

[0063] The fixed block 34 is provided with a progressive rack 341 , and the outer surface of the movable ring 32 is provided with locking teeth 321 corresponding to the progressive rack 341 ;

[0064] The adjusting rack 42 moves relative to drive the contact ring 31 to contact the cable 01, and the moving block 33 and the contact ring 31 are blocked by the cable 01 and separated from the fixed block 34, and the progressive rack 341 and the locking tooth 321 provided on the fixed block 34 move relative to each other, driving the movable ring 32 to rotate relative to the contact ring 31, and the contact ring 31 and the movable ring 32 are closed to lock the cable 01.

[0065] Through the above-mentioned structural setting, after the locking structure 2 is fixed on the cable 01, the user can rotate the adjusting knob 11, and the two groups of adjusting racks 42 will move relative to each other, thereby driving the two groups of contact rings 31 to move relative to each other until they contact other cables 01, and then the adjusting racks 42 continue to move. When the two groups of contact rings 31 are blocked by the cables 01, the moving block 33 is disengaged from the fixed block 34, so that the progressive rack 341 and the movable ring 32 move relative to each other. In the above process, the movable ring 32 is engaged with the progressive rack 341 due to the locking tooth 321, so that the movable ring 32 rotates on the contact ring 31 until it is combined with the contact ring 31 to form a complete ring to fix the cables 01 on both sides.

[0066] It should be noted that the moving block 33 is provided with a connecting rod 342 that passes through the fixed block 34, and the fixed block 34 is provided with a reset spring 35 connected to the moving block 33. The reset spring 35 is used to reset the movable ring 32 when the adjustment mechanism 4 drives the two groups of adjustment racks 42 to run apart.

[0067] In the present application, a limiting sliding groove 312 is provided on one side of the contact ring 31 relative to the movable ring 32;

[0068] A limiting rib extending into the limiting sliding groove 312 is disposed on one side of the movable ring 32 opposite to the contact ring 31 .

[0069] It should be further explained that a contact pad is provided on the inner wall of the contact ring 31 to enable the contact ring 31 to contact the movable ring 32 before the cable 01. The contact pad is used to prevent the movable ring 32 and the contact ring 31 from contacting the cable 01 at the same time to avoid affecting the subsequent rotation and locking of the movable ring 32.

[0070] In the present application, it should also be noted that a limit trigger 311 is provided on the contact ring 31, and the limit trigger 311 is used to contact the movable ring 32 after rotation, and the limit trigger 311 is electrically connected to the adjustment motor. In the above structure, when the movable ring 32 rotates to a specified position, after locking the cable 01, it contacts the limit trigger 311, thereby sending feedback to the adjustment mechanism 4, so that the adjustment mechanism 4 stops running, thereby avoiding the problem of excessive extension of the movable ring 32 caused by excessive operation of the adjustment mechanism 4.

[0071] It should be noted that a support frame is provided at the bottom of the frame body 1, and the support frame is used to support the adjustment rack 42 and limit the moving direction of the adjustment rack 42. The frame body 1 is also provided with a connecting mechanism 5, such as Figure 2 As shown, the connecting mechanism 5 is used to connect with the power tower, and a connecting piece 51 is provided at the end of the connecting mechanism 5. In the present application, when the cable 01 is in the ice-melting process, each cable 01 is powered off, and then the device is set on the cable 01 section with severe ice coverage to prevent the ice thereon from falling off and causing the cable 01 to dance and break due to excessive tension changes. After the present application is set up, the single cable 01 is then heated by electric current to melt the ice, thereby achieving the purpose of de-icing. At the same time, in order to avoid the difficulty in recycling the equipment, the connecting mechanism 5 in the present application can be set at the end of the cable 01 and connected to the power tower through the connecting piece 51. Specifically, the connecting piece 51 can be a magnetic suction piece or other connecting structure.

[0072] It should be further explained that the frame 1, the locking structure 2 and the live lock structure 3 are all made of polyimide, or other insulating materials that can be easily thought of by those skilled in the art.

[0073] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0074] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0075] In addition, "plurality" means two or more.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A power grid cable ice melting protection device, characterized in that: include: A frame (1), the frame (1) comprising a locking structure (2) and a live locking structure (3); The locking structure (2) is arranged at the center of the frame (1), and the locking structure (2) is used to fix the cable (01); The live lock structure (3) is arranged on both sides of the frame (1), and is used to connect other cables (01) so as to enable each cable (01) to share the force exerted by the cable (01) that is melting ice and generating tension changes that lead to jumpering.

2. The power grid cable ice melting protection device according to claim 1, characterized in that: The locking structure (2) comprises a trigger unit (21), a locking clamp (22) and a controller; The trigger unit (21) is used to contact the cable (01) and send feedback to the controller, and the controller is used to control the locking claw (22) to clamp the cable (01) so that the frame (1) is set on the cable (01).

3. The power grid cable ice melting protection device according to claim 1, characterized in that: Also includes an adjustment mechanism (4); The adjustment mechanism (4) comprises an adjustment toothed disc (41) arranged inside the frame (1), and, Adjustment racks (42) relatively distributed on both sides of the adjustment toothed disc (41); The two sets of live-lock structures (3) are arranged at the separated ends of the two sets of adjusting racks (42); The frame (1) is provided with an adjusting knob (11), and the adjusting knob (11) rotates to drive the adjusting toothed disc (41) to operate so as to drive the two sets of the movable lock structures (3) to operate relative to each other so as to connect other cables (01).

4. The power grid cable ice melting protection device according to claim 3, characterized in that: The live-lock structure (3) comprises a contact ring (31), a movable ring (32), a moving block (33) and a fixed block (34); The fixed block (34) is fixedly arranged on the adjustment rack (42); The movable block (33) is movably arranged on the fixed block (34); The contact ring (31) is fixedly arranged on the moving block (33); The movable ring (32) is slidably arranged on the contact ring (31) and is arranged in parallel with the contact ring (31); The fixed block (34) is provided with a progressive rack (341), and the outer surface of the movable ring (32) is provided with locking teeth (321) corresponding to the progressive rack (341); The adjusting rack (42) moves relative to each other to drive the contact ring (31) to contact the cable (01); the moving block (33) and the contact ring (31) are blocked by the cable (01) and separated from the fixed block (34); the progressive rack (341) and the locking tooth (321) arranged on the fixed block (34) move relative to each other, driving the movable ring (32) to rotate relative to the contact ring (31); the contact ring (31) and the movable ring (32) are closed to lock the cable (01).

5. A power grid cable ice melting protection device according to claim 4, characterized in that: The moving block (33) is provided with a connecting rod (342) penetrating the fixed block (34), and the fixed block (34) is provided with a return spring (35) connected to the moving block (33).

6. A power grid cable ice melting protection device according to claim 5, characterized in that: A limiting sliding groove (312) is provided on one side of the contact ring (31) relative to the movable ring (32); A limiting rib extending into the limiting sliding groove (312) is provided on one side of the movable ring (32) relative to the contact ring (31).

7. A power grid cable ice melting protection device according to claim 6, characterized in that: A contact pad is provided on the inner wall of the contact ring (31) so as to enable the contact ring (31) to contact the movable ring (32) before the cable (01).

8. The power grid cable ice melting protection device according to claim 7, characterized in that: A limit trigger (311) is provided on the contact ring (31), the limit trigger (311) is used to contact the movable ring (32) after rotation, and the limit trigger (311) is electrically connected to the regulating motor.

9. The power grid cable ice melting protection device according to claim 3, characterized in that: A support frame is provided at the bottom of the frame body (1), and the support frame is used to support the adjustment rack (42) and limit the moving direction of the adjustment rack (42). A connecting mechanism (5) is also provided on the frame body (1), and the connecting mechanism (5) is used to be connected to the power tower. A connecting piece (51) is provided at the end of the connecting mechanism (5).

10. The power grid cable ice melting protection device according to claim 1, characterized in that: The frame (1), the locking structure (2) and the movable lock structure (3) are all made of polyimide.

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