Direct-current deicing short-circuit device

Abstract

The invention relates to the technical field of power transmission and distribution network fittings, and discloses a direct current deicing short circuit device which comprises a connecting plate, a first mounting clamp is arranged on the connecting plate, second mounting clamps are symmetrically arranged below the first mounting clamp, and the second mounting clamps on the two sides are connected with the connecting plate through connecting frames. The second mounting clamps on the two sides are hinged to the connecting frames on the corresponding sides. First arc parts which are symmetrically arranged are arranged on the side walls, close to the sides of the second mounting clamps, of the first mounting clamps, second arc parts are arranged on the second mounting clamps on the two sides, and connecting assemblies used for connecting the second mounting clamps and the first mounting clamps are further arranged on the second mounting clamps on the two sides; after the second mounting rack and the first mounting rack are connected by the connecting assembly, the first arc part and the second arc part at the corresponding position can be matched to form a clamping space for clamping the transmission and distribution power grid; the device has the advantages of being convenient to install and reducing potential safety hazards of operators.

Description

Technical Field

[0001] The invention relates to a direct current ice melting short-circuit device, belonging to the technical field of hardware for power transmission and distribution networks. Background Art

[0002] DC de-icing is a technology to eliminate ice on power transmission and distribution networks. DC de-icing is a method of eliminating ice on power transmission and distribution networks by applying DC current to the iced power transmission and distribution network and utilizing the current heating effect. Specifically, it causes a short circuit at the end of the power transmission and distribution network to heat the conductors through the DC current, thereby promoting the melting of ice on the power transmission and distribution network.

[0003] At present, DC de-icing is limited by environmental factors at the installation location, and is basically installed by manually climbing up the power tower. The longer this installation takes, the greater the safety hazard for the operator. To this end, in the prior art, the invention patent with the Chinese patent authorization announcement number CN103490363B discloses a DC de-icing quick short-circuit device for transmission lines, including a short-circuit cable, and a wire hanging clamp is connected to each end of the short-circuit cable. One end of the upper and lower clamping blocks of the wire hanging clamp is connected by a hinge, and the other end is equipped with an upper and lower half-watt combined beryllium copper sleeve that matches the diameter of the overhead line; the two ends of the short-circuit cable are respectively quickly screwed with the lower convex conductive block through an internal threaded clamp; the lower end of the pull rod is square and connected to the middle of the lower clamping block through a stop pin mechanism. The above technical solution connects the conductor hanging clamp to two parallel overhead lines, loads a high current power supply between adjacent phases of the overhead lines, and uses the resistance of the overhead aluminum stranded wire itself to generate heat, thereby melting and removing the ice. It can quickly and conveniently connect adjacent phases and has the advantages of labor-saving operation, short time, safety, speed and firmness.

[0004] However, there are still the following problems in actual use: when it is installed on the power transmission and distribution network, it needs to be installed with both hands, that is, one hand needs to hold the clamp to ensure that it does not fall from the power transmission and distribution network, and then the other hand needs to turn the forward and reverse ratchet wrench to complete its installation. During installation, both hands of the operator need to be occupied at the same time, which will reduce the operator's ability to resist emergencies, thereby increasing the safety hazards of the operator. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a direct current ice melting short-circuit device.

[0006] The technical solution of the present invention is as follows: A DC ice-melting short-circuit device comprises a connecting plate, wherein a first mounting clamp is arranged on the connecting plate, and two ends of the first mounting clamp are arranged to pass through two sides of the connecting plate, and a second mounting clamp is symmetrically arranged below the first mounting clamp, and the second mounting clamps on both sides are connected to the connecting plate by setting a connecting frame, and the second mounting clamps on both sides are hinged together with the connecting frames on the corresponding sides; a first arc portion symmetrically arranged is provided on the side wall of the first mounting clamp close to the second mounting clamp side, and a second arc portion adapted to the first arc portion is provided on the second mounting clamps on both sides, and a connecting assembly for connecting the second mounting clamp with the first mounting clamp is also provided on the second mounting clamps on both sides, and after the connecting assembly connects the second mounting frame with the first mounting frame, the first arc portion and the second arc portion at the corresponding positions can cooperate to form a clamping space for clamping a power transmission and distribution network.

[0007] Furthermore, the connecting assembly includes a pivot bolt, and a first placement groove is provided on the end of the second mounting clamps on both sides away from the connecting frame side, and the pivot bolts are arranged in the first placement grooves on both sides by means of a hinged connection, and a second placement groove is provided on the end of the first mounting clamps on both sides, and the pivot bolts on both sides can be extended into the second placement grooves on the corresponding sides by rotation, and the top of the pivot bolt can extend outward from the top of the second placement groove, and a butterfly nut is threadedly connected to the protruding end of the pivot bolt.

[0008] Furthermore, a fixed handle in an arc-shaped structure is provided at the bottom of the connecting plate.

[0009] Furthermore, a U-shaped bolt is provided on the top of the connecting plate, and both ends of the U-shaped bolt are connected to the first mounting clamp.

[0010] Furthermore, the first mounting clamp includes a first frame body and first clamping parts symmetrically arranged on both sides of the first frame body, the first frame body is connected to the connecting plate, and first sliding grooves are opened on both side ends of the first frame body, and first sliding blocks are arranged on the ends of the first clamping parts on both sides close to the first frame body side, the first sliding blocks are slidably connected to the first sliding grooves, and the first clamping part can adjust the distance with the first frame body by sliding the first sliding block in the first sliding groove, and the first arc portion and the second placement groove are both arranged on the first clamping part.

[0011] Furthermore, the connecting frame includes a second frame body and connecting parts symmetrically arranged on both sides of the second frame body, the second frame body is connected to the connecting plate, second sliding grooves are opened on both side ends of the second frame body, and second sliders are arranged on the ends of the connecting parts on both sides close to the second frame body. The second sliders are slidably connected to the second sliding grooves, and the distance between the connecting part and the second frame body can be adjusted by sliding the second slider in the second sliding groove, and the second mounting clamp is hinged on the connecting part.

[0012] Furthermore, the first clamping portion and the connecting portion are connected by providing a connecting block, and the first frame is also provided with a limiting component for limiting the position of the first sliding block in the first sliding groove.

[0013] Furthermore, the limit assembly includes a limit pin, a plug-in hole is provided on the first frame, the plug-in hole is connected to the first slide slot, the limit pin is inserted into the plug-in hole and the nail tip of the limit pin is extended into the first slide slot, a plurality of limit blocks are provided on the side wall of the first sliding block close to the limit pin, the spacing between adjacent limit blocks is equal, the spacing between adjacent limit blocks is adapted to the nail tip of the limit pin, the nail head of the limit pin is located outside the plug-in hole, a first spring is provided on the limit pin, the first spring is provided between the nail head of the limit pin and the first frame, the two ends of the first spring are respectively fixedly connected to the nail head of the limit pin and the first frame, and when the first spring is in a normal state, the nail tip of the limit pin is inserted into the spacing between adjacent limit blocks.

[0014] Furthermore, an internal thread is provided on the hole wall of the plug-in hole, and an external thread is provided on the nail body of the limiting nail. When the nail tip of the limiting nail leaves the first sliding groove, the external thread can contact the internal thread, and the limiting nail can be fixed in the plug-in hole through the threaded connection between the external thread and the internal thread.

[0015] Furthermore, the limit assembly includes an adjusting screw, a threaded hole is provided on the first frame, the threaded hole is connected to the first slide slot, the adjusting screw is threadedly connected to the threaded hole and the nail tip of the adjusting screw is extended into the first slide slot, an auxiliary inclined wall is provided on the end of the first sliding block away from the first clamping portion, the nail tip of the adjusting screw is tightly arranged against the auxiliary inclined wall, a first limit step is provided at the notch of the first slide slot, a second limit step is provided on the first sliding block to adapt to the first limit step, a second spring is also provided on the first sliding block, the second spring is arranged between the first limit step and the second limit step, the two ends of the second spring are respectively connected to the first limit step and the second limit step, and when the second spring is in a normal state, the first frame and the first clamping portion are tightly arranged.

[0016] The present invention has the following beneficial effects: 1. The present invention provides a first mounting clamp, a second mounting clamp, a connecting frame, a first arc portion, a second arc portion, a connecting assembly and other structures. During installation, an operator can hang the first mounting clamp on two lines of the power transmission and distribution network by means of the first arc portion, so that the DC ice melting short-circuit device can be temporarily installed on the power transmission and distribution network, and is not prone to falling. Afterwards, the operator can complete the installation of the device by rotating the movable bolt to make it enter the second placement groove and tightening the butterfly nut. During the entire installation process, the operator does not need to support the first mounting clamp, so that the device can be installed with only one hand in most cases, so that the operator can free one hand to take tools or ensure his own safety. Compared with the prior art, it has the advantages of convenient installation and reducing safety hazards of the operator.

[0017] 2. The present invention sets the first mounting clamp as a structure of a first frame and a first clamping part, and cooperates with the first slider and the first slide groove to enable the length to be adjusted. At the same time, the connecting frame is set as a structure of a second frame and a connecting part, and cooperates with the second slider, the second slide groove and the connecting block to enable the length to be adjusted along with the first mounting clamp. In addition, a limit assembly is set to limit the positional relationship between the first frame and the first clamping part, so that when the DC ice melting short-circuit device is in use, it can adapt to a variety of power transmission and distribution networks with different line spacings by adjusting the overall length of the first mounting frame, and has the advantages of flexible and convenient use and good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of the first embodiment of the present invention in an expanded state; Figure 3 This is a schematic diagram of the structure of the first embodiment of the present invention in a clamping state; Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 5 This is a schematic diagram of the structure when length adjustment is performed in Embodiment 2 of the present invention; Figure 6 This is the enlarged view of point A; Figure 7 This is an enlarged view of point B; Figure 8 This is a schematic diagram of the structure of Embodiment 3 of the present invention; Fig. 9 This is a schematic diagram of the structure when length adjustment is performed in Embodiment 3 of the present invention; Fig.10 This is the enlarged view of point C; Fig.11 This is an enlarged view of point D.

[0019] The reference numerals in the figure are as follows: 1. Connecting plate; 2. First mounting clamp; 3. Second mounting clamp; 4. Connecting frame; 5. First arc portion; 6. Second arc portion; 7. Articulated bolt; 8. First placement slot; 9. Second placement slot; 10. Butterfly nut; 11. Fixed handle; 12. U-bolt; 13. First frame; 14. First clamping portion; 15. First slide slot; 16. First slider; 17. Second frame; 18. Connecting portion; 19. Second slide slot; 20. Second slider; 21. Connecting block; 22. Limiting nail; 23. Plug-in hole; 24. Limiting block; 25. First spring; 26. Internal thread; 27. External thread; 28. Adjusting screw; 29. ​​Threaded hole; 30. Auxiliary inclined wall; 31. First limiting step; 32. Second limiting step; 33. Second spring. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1: Please refer to Figures 1 to 3 The present embodiment provides a DC ice melting short-circuit device, including a connecting plate 1, on which a horizontally arranged first mounting clamp 2 is fixedly arranged, and the two ends of the first mounting clamp 2 are arranged to pass through the two sides of the connecting plate 1, and a symmetrically arranged second mounting clamp 3 is arranged below the first mounting clamp 2, and the second mounting clamp 3 is arranged at the two sides of the connecting plate 1. The second mounting clamps 3 on both sides are connected to the connecting plate 1 by setting a horizontally arranged connecting frame 4, and the second mounting clamps 3 on both sides are hinged together with the connecting frame 4 on the corresponding side, so as to be able to rotate accordingly on the connecting frame 4 on the corresponding side. A symmetrically arranged first arc portion 5 is provided on the side wall of the first mounting clamp 2 close to the second mounting clamp 3, and a second arc portion 6 adapted to the first arc portion 5 is provided on the second mounting clamps 3 on both sides, and a connecting assembly for connecting the second mounting clamp 3 with the first mounting clamp 2 is also provided on the second mounting clamps 3 on both sides. After the connecting assembly connects the second mounting frame with the first mounting frame, the first arc portion 5 and the second arc portion 6 at the corresponding position can cooperate to form a clamping space for clamping the power transmission and distribution network.

[0022] In this embodiment, the connecting assembly includes a hinged bolt 7, and a first placement groove 8 is provided on the end of the second mounting clamps 3 on both sides away from the connecting frame 4. The hinged bolts 7 are arranged in the first placement grooves 8 on both sides by means of a hinged connection. Second placement grooves 9 are provided on the end of both sides of the first mounting clamp 2. The hinged bolts 7 on both sides can be extended into the second placement grooves 9 on the corresponding side by rotation, and the tops of the hinged bolts 7 on both sides can be extended outward from the tops of the second placement grooves 9 on the corresponding side. Butterfly nuts 10 are threadedly connected to the protruding ends of the hinged bolts 7 on both sides.

[0023] Through the above-mentioned arrangement, when the present embodiment is in use, the operator can hang the first mounting clamp 2 on the two lines of the power transmission and distribution network with the help of the first arc portion 5, so that the DC ice melting short-circuit device can be temporarily installed on the power transmission and distribution network, and is not prone to falling off. Afterwards, the operator rotates the movable bolt 7 to make it enter the second placement groove 9 and makes the top of the movable bolt 7 extend outward from the top of the second placement groove 9. At this time, the second mounting clamp 3 will follow the movement of the movable bolt and rotate accordingly on the connecting frame 4, and move toward the direction close to the first mounting frame, so that the first arc portion 5 and the second arc portion 6 can form a clamping space for clamping the power transmission and distribution network, so as to clamp the lines of the power transmission and distribution network. Afterwards, the operator fixes the movable bolt 7 on the first mounting clamp 2 by tightening the butterfly nut 10, so that the first mounting clamp 2 can cooperate with the second mounting clamp 3 to clamp the power transmission and distribution network line. The installation of the device can be completed by using the above method to cooperate with the first mounting clamp 2 to clamp the power transmission and distribution network line. During the entire installation process, the operator does not need to support the first mounting clamp 2, so that the device can be installed with only one hand in most cases, so that the operator can free one hand to take tools or ensure his own safety.

[0024] In order to facilitate the use of the operator, in the present embodiment, a fixed handle 11 in an arc-shaped structure is provided at the bottom of the connecting plate 1. The setting of the fixed handle 11 can facilitate the operator to take the DC ice-melting short-circuit device.

[0025] To facilitate the use of operators, in this embodiment, a U-shaped bolt 12 is provided on the top of the connecting plate 1, and both ends of the U-shaped bolt 12 are fixedly connected to the first mounting clamp 2. The setting of the U-shaped bolt 12 can facilitate the lifting or carrying of the DC ice melting short-circuit device, so as to facilitate the use of operators.

[0026] Embodiment 2: To improve the applicability of the DC ice melting short-circuit device so that it can adapt to various transmission and distribution networks with different line spacings, please refer to Figures 4 to 7On the basis of the first embodiment, the present embodiment provides a DC ice melting short-circuit device, including all the structures in the first embodiment. Furthermore, the first mounting clamp 2 includes a first frame 13 and first clamping parts 14 symmetrically arranged on both sides of the first frame 13. The first frame 13 is fixedly connected to the connecting plate 1. Both side ends of the first frame 13 are provided with first horizontally arranged slide grooves 15. Both side ends of the first clamping parts 14 close to the first frame 13 are provided with first horizontally arranged sliders 16. Both side first sliders 16 are slidably connected to the first slide grooves 15 on the corresponding sides. The first clamping parts 14 on both sides can adjust the distance between themselves and the first frame 13 by sliding the first sliders 16 in the first slide grooves 15. The first arc portion 5 and the second placement groove 9 are both arranged at the corresponding positions of the first clamping part 14.

[0027] The connecting frame 4 includes a second frame body 17 and connecting parts 18 symmetrically arranged on both sides of the second frame body 17. The second frame body 17 is fixedly connected to the connecting plate 1. Horizontally arranged second slide grooves 19 are provided on both side ends of the second frame body 17. The layout of the second slide grooves 19 is adapted to the first slide grooves 15. Horizontally arranged second sliders 20 are provided on the ends of the connecting parts 18 on both sides close to the second frame body 17. The second sliders 20 on both sides are slidably connected to the second slide grooves 19 on the corresponding sides. The connecting parts 18 on both sides can adjust the distance between themselves and the second frame body 17 by sliding the second sliders 20 in the second slide grooves 19. The second mounting clamps 3 are hinged to the corresponding positions of the connecting parts 18.

[0028] The first clamping parts 14 on both sides are connected to the corresponding side connecting parts 18 by setting connecting blocks 21, so that when the first clamping parts 14 move, the connecting parts 18 at the corresponding positions can move accordingly. The first frame 13 is also provided with a limit assembly for limiting the position of the first slider 16 in the first slide groove 15.

[0029] In this embodiment, the limiting assembly includes symmetrically arranged limiting pins 22, and the first frame 13 is provided with symmetrically arranged plug holes 23, and the plug holes 23 on both sides are connected with the first slide grooves 15 at the corresponding positions, and the limiting pins 22 on both sides are inserted into the plug holes 23 on the corresponding sides, and the nail tips of the limiting pins 22 are arranged to extend into the first slide grooves 15 at the corresponding positions, and the side walls of the first sliders 16 on both sides close to the limiting pins 22 are provided with a plurality of limiting blocks 24, and the specific number of the limiting blocks 24 can be determined according to the actual situation, and is not limited here. The spacing between adjacent limiting blocks 24 is set equal, and the spacing between adjacent limiting blocks 24 is adapted to the nail tips of the limiting pins 22. The nail heads of the limiting nails 22 on both sides are arranged outside the corresponding plug-in holes 23, and the first springs 25 are sleeved on the limiting nails 22 on both sides. The first springs 25 are arranged between the nail heads of the limiting nails 22 and the first frame 13, and the two ends of the first springs 25 on both sides are fixedly connected with the nail heads of the corresponding limiting nails 22 and the first frame 13 respectively. When the first springs 25 on both sides are in the normal state, the nail tips of the corresponding limiting nails 22 are arranged to be inserted into the spacing between adjacent limiting blocks 24.

[0030] Internal threads 26 are also provided on the hole walls of the plug-in holes 23 on both sides, and external threads 27 are provided on the nail bodies of the limiting nails 22 on both sides. When the nail tips of the limiting nails 22 leave the first sliding groove 15, the external threads 27 can contact the internal threads 26, and the limiting nails 22 can be fixed in the plug-in holes 23 through the threaded connection between the external threads 27 and the internal threads 26.

[0031] Through the above-mentioned settings, when the DC ice melting short-circuit device is used for various transmission and distribution networks with different line spacings, the operator pulls the limit pin 22 upwards so that the nail head of the limit pin 22 leaves the first slide groove 15 and enters the plug hole 23. Then, the operator slightly rotates the limit pin 22 so that the external thread 27 and the internal thread 26 are screwed together. At this time, the limit pin 22 can be fixed in the plug hole 23 and will not enter the first slide groove 15 to hinder the movement of the first slider 16. Afterwards, the operator pulls the first clamping part 14 to make it leave the first frame 13 to the required distance. When the first clamping part 14 moves, the connecting part 18 will follow and move accordingly under the action of the connecting block 21. After the first clamping part 14 moves to the appropriate position, the operator rotates the limit pin 22 to disconnect the external thread 27 from the internal thread 26. At this time, the limit pin 22 will be reinserted into the first slide groove 15 under the resetting action of the first spring 25. The operator fine-tunes the first clamping part 14 so that the tip of the limit pin 22 can enter between two adjacent limit blocks 24. At this time, the limit pin 22 cooperates with the limit blocks 24 to fix the overall length of the first mounting clamp 2. After the overall length of the first mounting clamp 2 is fixed, the overall length of the second mounting frame will also be fixed. At this time, the DC ice melting short-circuit device can be used in the transmission and distribution network with the corresponding line spacing.

[0032] Embodiment 3: To improve the applicability of the DC ice melting short-circuit device so that it can adapt to various transmission and distribution networks with different line spacings, please refer to Figures 8 to 11 On the basis of the first embodiment, the present embodiment provides a DC ice melting short-circuit device, including all the structures in the first embodiment. Furthermore, the first mounting clamp 2 includes a first frame 13 and first clamping parts 14 symmetrically arranged on both sides of the first frame 13. The first frame 13 is fixedly connected to the connecting plate 1. Both side ends of the first frame 13 are provided with first horizontally arranged slide grooves 15. Both side ends of the first clamping parts 14 close to the first frame 13 are provided with first horizontally arranged sliders 16. Both side first sliders 16 are slidably connected to the first slide grooves 15 on the corresponding sides. The first clamping parts 14 on both sides can adjust the distance between themselves and the first frame 13 by sliding the first sliders 16 in the first slide grooves 15. The first arc portion 5 and the second placement groove 9 are both arranged at the corresponding positions of the first clamping part 14.

[0033] The connecting frame 4 includes a second frame body 17 and connecting parts 18 symmetrically arranged on both sides of the second frame body 17. The second frame body 17 is fixedly connected to the connecting plate 1. Horizontally arranged second slide grooves 19 are provided on both side ends of the second frame body 17. The layout of the second slide grooves 19 is adapted to the first slide grooves 15. Horizontally arranged second sliders 20 are provided on the ends of the connecting parts 18 on both sides close to the second frame body 17. The second sliders 20 on both sides are slidably connected to the second slide grooves 19 on the corresponding sides. The connecting parts 18 on both sides can adjust the distance between themselves and the second frame body 17 by sliding the second sliders 20 in the second slide grooves 19. The second mounting clamps 3 are hinged to the corresponding positions of the connecting parts 18.

[0034] The first clamping parts 14 on both sides are connected to the corresponding side connecting parts 18 by setting connecting blocks 21, so that when the first clamping parts 14 move, the connecting parts 18 at the corresponding positions can move accordingly. The first frame 13 is also provided with a limit assembly for limiting the position of the first slider 16 in the first slide groove 15.

[0035] In this embodiment, the limiting assembly includes symmetrically arranged adjusting screws 28, and symmetrically arranged threaded holes 29 are opened on the first frame 13. The threaded holes 29 on both sides are connected to the first slide groove 15 at the corresponding position. The adjusting screws 28 on both sides are threadedly connected to the threaded holes 29 on the corresponding sides and the nail tips of the adjusting screws 28 are extended into the first slide groove 15 at the corresponding position. Auxiliary inclined walls 30 are provided on the ends of the first sliding blocks 16 on both sides away from the first clamping part 14 on the corresponding side, and the nail tips of the adjusting screws 28 on both sides are tightly arranged with the auxiliary inclined walls 30 at the corresponding positions. First limiting steps 31 are provided at the notches of the first sliding grooves 15 on both sides, and second limiting steps 32 adapted to the first limiting steps 31 are opened on the first sliding blocks 16 on both sides. Second springs 33 are also sleeved on the first sliding blocks 16 on both sides. The second springs 33 are arranged between the first limiting steps 31 and the second limiting steps 32. The two ends of the second springs 33 on both sides are fixedly connected with the corresponding first limiting steps 31 and the second limiting steps 32 respectively. When the second springs 33 are in the normal state, the first frame 13 and the first clamping part 14 are fitted together, and at this time, the nail tip of the adjusting screw 28 is tightly attached to the top of the auxiliary inclined wall 30.

[0036] Through the above-mentioned arrangement, when the DC ice-melting short-circuit device copes with various power transmission and distribution networks with different line spacings, the operator rotates the adjusting screw 28, and the adjusting screw 28 will perform a corresponding movement under the action of the threaded connection of the threaded hole 29. Taking the need to change the length of the first mounting clamp 2 to an example, the adjusting screw 28 is rotated and moves downward under the action of the threaded connection of the threaded hole 29, thereby squeezing the auxiliary inclined wall 30, and pushing the first slider 16 to perform a corresponding movement under the action of the auxiliary inclined wall 30, so that the first slider 16 moves close to the first limit step 31, so that the first clamping part 14 can leave the first frame 13, and when the first clamping part 14 moves, the connecting part 18 will follow and perform a corresponding movement under the action of the connecting block 21, and in this process the second spring 33 will be compressed to generate a rebound force. After the first clamping portion 14 moves to a suitable position, the operator stops rotating the adjusting screw 28. At this time, the adjusting screw 28 cooperates with the second spring 33 to fix the overall length of the first mounting clamp 2. After the overall length of the first mounting clamp 2 is fixed, the overall length of the second mounting frame will also be fixed. At this time, the DC ice melting short-circuit device can be used in the transmission and distribution network of the corresponding line spacing. When the length of the first mounting clamp 2 needs to be adjusted back, the adjusting screw 28 is rotated to make the adjusting screw 28 move upward. At this time, the first slider 16 can be reset under the action of the rebound of the second spring 33, thereby realizing the adjustment of the length of the first mounting frame.

[0037] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A DC ice melting short-circuit device, comprising a connecting plate (1), characterized in that: The connecting plate (1) is provided with a first mounting clamp (2), the two ends of the first mounting clamp (2) are arranged to pass through the two sides of the connecting plate (1), and a second mounting clamp (3) is symmetrically arranged below the first mounting clamp (2), and the second mounting clamps (3) on both sides are connected to the connecting plate (1) by means of a connecting frame (4), and the second mounting clamps (3) on both sides are hinged to the connecting frame (4) on the corresponding side; a first arc portion (5) symmetrically arranged is provided on the side wall of the first mounting clamp (2) close to the second mounting clamp (3), and a second arc portion (6) adapted to the first arc portion (5) is provided on the second mounting clamps (3) on both sides; and a connecting assembly for connecting the second mounting clamp (3) with the first mounting clamp (2) is also provided on the second mounting clamps (3) on both sides; after the connecting assembly connects the second mounting frame with the first mounting frame, the first arc portion (5) and the second arc portion (6) at the corresponding position can cooperate to form a clamping space for clamping the power transmission and distribution network.

2. A DC ice melting short-circuit device according to claim 1, characterized in that: The connecting assembly comprises a hinged bolt (7), a first placement groove (8) is provided on the end of the second mounting clamps (3) on both sides away from the connecting frame (4), the hinged bolts (7) are arranged in the first placement grooves (8) on both sides by means of hinged connection, and a second placement groove (9) is provided on the end of the first mounting clamp (2) on both sides, the hinged bolts (7) on both sides can be extended into the second placement groove (9) on the corresponding side by rotation, and the top of the hinged bolt (7) can extend outward from the top of the second placement groove (9), and a butterfly nut (10) is threadedly connected to the extended end of the hinged bolt (7).

3. A DC ice melting short-circuit device according to claim 1, characterized in that: A fixed handle (11) having an arc-shaped structure is provided at the bottom of the connecting plate (1).

4. A DC ice melting short-circuit device according to claim 1, characterized in that: A U-shaped bolt (12) is provided on the top of the connecting plate (1), and both ends of the U-shaped bolt (12) are connected to the first mounting clamp (2).

5. A DC ice melting short-circuit device according to claim 2, characterized in that: The first mounting clamp (2) comprises a first frame (13) and first clamping parts (14) symmetrically arranged on both sides of the first frame (13); the first frame (13) is connected to the connecting plate (1); first sliding grooves (15) are provided on both side ends of the first frame (13); first sliders (16) are provided on both side ends of the first clamping parts (14) close to the first frame (13); the first sliders (16) are slidably connected in the first sliding grooves (15); the first clamping part (14) can adjust the distance with the first frame (13) by sliding in the first sliding grooves (15) through the first sliders (16); the first arc part (5) and the second placement groove (9) are both provided on the first clamping part (14).

6. A DC ice melting short-circuit device according to claim 5, characterized in that: The connecting frame (4) comprises a second frame body (17) and connecting parts (18) symmetrically arranged on both sides of the second frame body (17); the second frame body (17) is connected to the connecting plate (1); second slide grooves (19) are provided on both side ends of the second frame body (17); second sliders (20) are provided on the ends of the connecting parts (18) on both sides close to the second frame body (17); the second sliders (20) are slidably connected in the second slide grooves (19); the distance between the connecting part (18) and the second frame body (17) can be adjusted by sliding the second sliders (20) in the second slide grooves (19); and the second mounting clamp (3) is hinged on the connecting part (18).

7. A DC ice melting short-circuit device according to claim 6, characterized in that: The first clamping portion (14) and the connecting portion (18) are connected by providing a connecting block (21), and the first frame (13) is also provided with a limiting component for limiting the position of the first sliding block (16) in the first sliding groove (15).

8. A DC ice melting short-circuit device according to claim 7, characterized in that: The limiting assembly comprises a limiting nail (22), a plug hole (23) is provided on the first frame (13), the plug hole (23) is connected to the first slide groove (15), the limiting nail (22) is inserted into the plug hole (23) and the nail tip of the limiting nail (22) is extended into the first slide groove (15), and a plurality of limiting blocks (24) are provided on the side wall of the first sliding block (16) close to the limiting nail (22), the spacing between adjacent limiting blocks (24) is equal, and the spacing between adjacent limiting blocks (24) is equal to the spacing between the limiting nail (22). The nail tip is arranged in a corresponding manner, the nail head of the limiting nail (22) is arranged outside the insertion hole (23), a first spring (25) is arranged on the limiting nail (22), the first spring (25) is arranged between the nail head of the limiting nail (22) and the first frame (13), the two ends of the first spring (25) are respectively fixedly connected to the nail head of the limiting nail (22) and the first frame (13), and when the first spring (25) is in a normal state, the nail tip of the limiting nail (22) is arranged to be inserted into the spacing between adjacent limiting blocks (24).

9. A DC ice melting short-circuit device according to claim 8, characterized in that: An internal thread (26) is provided on the hole wall of the plug hole (23), and an external thread (27) is provided on the nail body of the limiting nail (22). When the nail tip of the limiting nail (22) leaves the first sliding groove (15), the external thread (27) can contact the internal thread (26), and the limiting nail (22) can be fixed in the plug hole (23) through the threaded connection between the external thread (27) and the internal thread (26).

10. A DC ice melting short-circuit device according to claim 7, characterized in that: The limit assembly comprises an adjusting screw (28), a threaded hole (29) is formed on the first frame (13), the threaded hole (29) is connected to the first slide groove (15), the adjusting screw (28) is threadedly connected to the threaded hole (29), and the nail tip of the adjusting screw (28) is extended into the first slide groove (15), an auxiliary inclined wall (30) is provided on the end of the first slider (16) away from the first clamping part (14), the nail tip of the adjusting screw (28) is closely arranged with the auxiliary inclined wall (30), and a notch of the first slide groove (15) is provided. A first limiting step (31) is provided, a second limiting step (32) adapted to the first limiting step (31) is provided on the first slider (16), a second spring (33) is further provided on the first slider (16), the second spring (33) is arranged between the first limiting step (31) and the second limiting step (32), two ends of the second spring (33) are respectively connected to the first limiting step (31) and the second limiting step (32), and when the second spring (33) is in a normal state, the first frame (13) and the first clamping portion (14) are arranged in close contact.

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