Adaptive electric double-sided clamp block firing structure

Abstract

This invention relates to the field of live-line working technology for power distribution networks, specifically to an adaptive electric double-sided clamping block contact structure, including a bracket and rollers mounted on the bracket; a contact clamping assembly located on one side of the rollers; and an adjustment assembly including a connecting mechanism and an elastic mechanism. The contact clamping assembly is slidably connected to the bracket via the connecting mechanism, and the elastic mechanism is located between the bracket and the connecting mechanism. This invention, by setting rollers to hang the conductor, combined with the vertical floating of the connecting mechanism and the pre-tightening effect of the elastic mechanism, allows the contact clamping assembly to float relative to the bracket. A continuous elastic tension towards the conductor is applied to the connecting mechanism by a tension spring, so that during the clamping process, when the first clamping block contacts the conductor before the second clamping block, the entire contact clamping assembly can overcome the tension spring and move upward, thereby adaptively adjusting the clamping center points of the first and second clamping blocks.

Description

Technical Field

[0001] This invention relates to the field of live-line working technology for power distribution networks, specifically to an adaptive electric double-sided clamping block connection structure. Background Technology

[0002] In live-line work on power distribution lines, electric clamping connection structures are used to stably clamp the connection device onto the conductor to achieve a reliable electrical connection. With the popularization of drone-mounted automated operations, connection structures need to be able to adaptively clamp different conductors without human intervention. Therefore, electric clamping connection structures with automatic adaptation capabilities have become a key requirement for improving work efficiency and safety.

[0003] Traditional electric clamping fire connection structures typically consist of a fixed mounting bracket, a drive source, and a unidirectional feeding clamping block. During operation, the device hangs the top guide on the wire, and then the drive motor drives the clamping block to advance linearly along a preset trajectory until it presses against the surface of the wire to complete the clamping and fixing, thereby achieving fire connection.

[0004] However, due to differences in wire diameter and insulation thickness among different wire specifications, when mounted on a fixed roller, the height of the wire center relative to the roller shifts vertically depending on the wire specification. In existing equipment, the center position of the clamped block relative to the roller is fixed, resulting in a deviation between the clamped block's center position and the wire center's position relative to the roller. This leads to poor contact between the clamped block and the wire surface, increased local contact resistance, and potential overheating. Therefore, an adaptive electric double-sided clamping block fire connection structure is proposed to solve the above problems. Summary of the Invention

[0005] To address the aforementioned shortcomings of existing technologies, this invention provides an adaptive electric double-sided clamping block connection structure, which can effectively solve the problem of poor connection and severe overheating caused by the different center positions of the clamping blocks relative to the conductors when the integrated device is mounted on wires of different diameters and thicknesses.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides an adaptive electric double-sided clamping block fire-fighting structure, comprising: The bracket and the rollers mounted on the bracket; The fire-receiving clamping assembly is located on one side of the roller; The adjustment assembly includes a connecting mechanism and an elastic mechanism. The fire-receiving clamping assembly is slidably connected to the bracket through the connecting mechanism, and the elastic mechanism is disposed between the bracket and the connecting mechanism. The elastic mechanism is configured to apply a return force to the fire-receiving clamping assembly to drive the fire-receiving clamping assembly to slide relative to the bracket, so that the clamping position of the fire-receiving clamping assembly relative to the wire is adaptively kept centered.

[0007] Preferably, the connecting mechanism includes a sliding shaft vertically mounted on the bracket, with both ends of the sliding shaft slidably mounted on the bracket via guide supports, and the fire-receiving clamping assembly fixedly connected to the sliding shaft.

[0008] Preferably, the guide support includes a fixing member fixedly disposed on the outer wall of the bracket, and the fixing member has a sliding hole that slides with the sliding shaft, so that the connecting mechanism can slide along the axial direction of the sliding shaft.

[0009] Preferably, the elastic mechanism includes a tension spring body, one end of which is fixedly connected to the fire-receiving clamping assembly, and the other end is fixedly connected to the bracket, so as to apply a return-centering tension force to the fire-receiving clamping assembly.

[0010] Preferably, the fire-receiving clamping assembly includes a clamping member, a drive motor, and a transmission structure, wherein the clamping member includes a first clamping block and a second clamping block disposed opposite to each other.

[0011] Preferably, the transmission structure is a bidirectional threaded transmission, the transmission structure includes a bidirectional threaded rod, the bidirectional threaded rod is threadedly connected to the first clamping block and the second clamping block through bidirectional threads, and the drive motor is poweredly connected to the bidirectional threaded rod through a transmission gear set.

[0012] Preferably, at least one guide shaft is provided between the first clamping block and the second clamping block to guide the clamping and releasing of the first clamping block and the second clamping block; Preferably, a drain line is connected to the lower part of the second clamping block.

[0013] Preferably, the roller is a V-shaped roller.

[0014] The technical solution provided by this invention has the following advantages compared with the known prior art: In this invention, by setting rollers to hang the wire, combined with the vertical floating of the connecting mechanism and the pre-tightening effect of the elastic mechanism, the fire-connecting clamping assembly is arranged to float relative to the support. The tension spring body applies an elastic tension towards the wire to the connecting mechanism, so that during the clamping process, the center point of the wire shifts relative to the preset reference clamping center point of the roller. When the first clamping block contacts the wire first but the second clamping block has not yet contacted it, the entire fire-connecting clamping assembly can overcome the tension of the tension spring and move upward, thereby adaptively adjusting the clamping center points of the first and second clamping blocks until they coincide with the center point of the wire after clamping. This effectively compensates for the vertical displacement of the center height caused by the difference in wire diameter and sheath thickness of different specifications of wires, realizes the automatic alignment of the clamping center with the center of the wire, and ensures that the device can clamp stably and reliably under various wire specifications, improving the safety and adaptability of fire-connecting operations. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the fire-receiving clamping assembly structure of the present invention; Figure 3 This is a schematic diagram of the elastic mechanism structure of the present invention; Figure 4 This is a schematic diagram of the sliding shaft structure of the present invention; Figure 5 This is a schematic diagram of the first clamping block structure of the present invention; Figure 6 This is a schematic diagram of the transmission structure of the present invention.

[0017] Reference numerals: 1. Bracket; 101. Fixing element; 102. Roller; 2. Connecting mechanism; 201. Second support plate; 202. Bidirectional threaded rod; 203. Sliding shaft; 204. Guide shaft; 205. First support plate; 3. First clamping block; 301. First guide block; 302. Threaded hole; 303. Guide hole; 4. Second clamping block; 401. Second guide block; 5. Protective cover; 6. Drive motor; 601. First transmission gear; 602. Second transmission gear; 7. Tension spring body; 701. First fixing rod; 702. Second fixing rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to embodiments.

[0020] See attached document Figure 1-6 An adaptive electric double-sided clamping block fire-fighting structure includes: The bracket 1 and the roller 102 mounted on the bracket 1 are V-shaped rollers with V-grooves to accommodate wires of different diameters, allowing them to be stably mounted on the wires. The bracket 1 is the base of the entire device, supporting all other components. In use, the operator places the bracket 1 on the wire via the roller 102. The roller 102 automatically centers and fits against the surface of the wire, completing the initial mounting. At this point, the device can be moved on the wire to the position where it needs to be connected to the fire. The fire-receiving clamping assembly is located on one side of the roller 102; The adjustment assembly includes a connecting mechanism 2 and an elastic mechanism. The fire-holding assembly is slidably connected to the bracket 1 along the clamping direction through the connecting mechanism 2, and the elastic mechanism is disposed between the bracket 1 and the connecting mechanism 2. The elastic mechanism is configured to apply a return force to the welding clamp assembly to drive the welding clamp assembly to slide relative to the bracket 1, so that the clamping position of the welding clamp assembly relative to the wire is adaptively kept centered.

[0021] The connecting mechanism 2 includes a sliding shaft 203 vertically mounted on the bracket 1. Both ends of the sliding shaft 203 are slidably mounted on the bracket 1 through guide supports. The fire-holding assembly is fixedly connected to the sliding shaft 203. The connecting mechanism 2 also includes a first support plate 205 and a second support plate 201. The first support plate 205 is located above the second support plate 201. The first support plate 205 and the second support plate 201 are rigidly connected through the sliding shaft 203 to form an integral frame-type floating seat. This frame slides on the bracket 1.

[0022] The guide support includes a fixing member 101 fixedly mounted on the outer wall of the bracket 1. The fixing member 101 has a sliding hole that slides with the sliding shaft 203, allowing the connecting mechanism 2 to slide along the axial direction of the sliding shaft 203. The sliding shaft 203 passes through the sliding hole on the fixing member 101 to form a sliding pair. There are two fixing members 101, which further restricts the sliding of the sliding shaft 203 and improves its stability. When the connecting mechanism 2 is subjected to external forces such as wire pressure and tension spring force, the sliding shaft 203 moves smoothly up and down in the sliding hole, ensuring that the connecting mechanism 2 always moves along its axial direction and does not deflect. In addition, the range of movement of the connecting mechanism 2 is also limited, so that in the initial state, the first clamping block 3 is located above the V-groove working surface of the roller 102 that contacts the wire, leaving sufficient space for the wire to pass through.

[0023] The elastic mechanism includes a tension spring body 7. One end of the tension spring body 7 is fixedly connected to the fire-receiving clamping assembly, and the other end is fixedly connected to the bracket 1 to apply a return-centering tension force to the fire-receiving clamping assembly. In this embodiment, a first fixing rod 701 is fixedly provided on the outer wall of the bracket 1. The fixing rod 701 is located on the bracket 1 at the end away from the roller 102, that is, at the lower part of the bracket 1. A second fixing rod 702 is provided on the outer wall of the first support plate 205. The two ends of the tension spring body 7 are respectively sleeved on the first fixing rod 701 and the second fixing rod 702 to apply an elastic tension force toward the wire to the connecting mechanism 2. In use, the tension spring body 7 is connected to the first fixing rod 701 and the second fixing rod 702. 2 is connected between the bracket 1 and the connecting mechanism 2, and a continuous pulling force is applied in the direction of the first fixed rod 701, so that the entire fire-receiving clamping assembly is in the lowest position. When the center point of the wire is completely coincident with the preset reference clamping center point of the roller 102, the wire does not lift the connecting mechanism 2. At this time, the lower end face of the first support plate 205 is in contact with the upper end face of the fixing member 101, and the fire-receiving clamping assembly is in the lowest position. When the center point of the wire is offset relative to the preset reference clamping center point of the roller 102, the first clamping block 3 contacts the wire first, the connecting mechanism 2 is pushed up by the wire, the tension spring is stretched, so that the fire-receiving clamping assembly is always in close contact with the wire, realizing the self-adaptation to different wire diameters.

[0024] The fire-receiving clamping assembly includes a clamping component, a drive motor 6, and a transmission structure. The clamping component includes a first clamping block 3 and a second clamping block 4 arranged opposite to each other. The transmission structure connects the drive motor 6 with the first clamping block 3 and the second clamping block 4 and is used to drive the first clamping block 3 and the second clamping block 4 to move synchronously. The reference model of the drive motor 6 is DM-W42-24V, which is an existing mature structure, so it will not be described in detail here.

[0025] The transmission structure is a bidirectional threaded transmission, comprising a bidirectional threaded rod 202. The two ends of the bidirectional threaded rod 202 are threadedly connected to the first clamping block 3 and the second clamping block 4 respectively via threads with different directions of rotation. The drive motor 6 is powered by the bidirectional threaded rod 202 through a transmission gear set. The bidirectional threaded rod 202 has a positive thread section and a negative thread section. The first clamping block 3 is threadedly engaged with the positive thread section of the bidirectional threaded rod 202 via a first guide block 301, and the second clamping block 4 is threadedly engaged with the negative thread section of the bidirectional threaded rod 202 via a second guide block 401. Both the first guide block 301 and the second guide block 401 are provided with threaded holes 302 that are threadedly engaged with the threads of the bidirectional threaded rod 202. The threaded holes 302 are tightly engaged with the threads of the bidirectional threaded rod 202, ensuring a stable axial thrust when the bidirectional threaded rod 202 rotates, achieving precision... The system provides accurate linear displacement, and the self-locking characteristic of the threaded drive maintains clamping force even after power failure, reducing the possibility of loosening. Specifically, when the bidirectional threaded rod 202 rotates, the first clamping block 3 and the second clamping block 4 move synchronously towards or away from each other under the drive of the bidirectional threaded rod 202. When the bidirectional threaded rod 202 rotates, due to the presence of the positive and negative threads, the first guide block 301 and the second guide block 401 move in opposite directions along the axial direction of the bidirectional threaded rod 202. When the bidirectional threaded rod 202 rotates clockwise, the first guide block 301 moves towards the center point of the bidirectional threaded rod 202, and the second guide block 401 also moves towards the center point of the bidirectional threaded rod 202, with the two clamping blocks moving towards each other to clamp the wire. When the bidirectional threaded rod 202 rotates counterclockwise, they move away from each other to release the wire, achieving synchronous movement of the two clamping blocks. The transmission structure also includes a first transmission gear 601 fixedly connected to the output end of the drive motor 6, and a second transmission gear 602 fixedly connected to the bidirectional threaded rod 202 and meshing with the first transmission gear 601. After the drive motor 6 starts, its output shaft drives the first transmission gear 601 to rotate. The first transmission gear 601 drives the second transmission gear 602 to rotate through meshing, thereby driving the bidirectional threaded rod 202 to rotate. This is used to achieve the matching of speed and torque, ensuring sufficient clamping force and smooth operation. A protective cover 5 is fixedly installed at the bottom of the second support plate 201. The protective cover 5 covers the outside of the first transmission gear 601 and the second transmission gear 602. The protective cover 5 completely encloses the first transmission gear 601 and the second transmission gear 602, reducing the phenomenon of external dust, debris and operator's fingers coming into contact with the rotating gears, improving the safety and reliability of the equipment, and keeping the equipment clean.

[0026] At least one guide shaft 204 is provided between the first clamping block 3 and the second clamping block 4 to guide the clamping and releasing of the first clamping block 3 and the second clamping block 4. The guide shaft 204 is fixedly installed between the first support plate 205 and the second support plate 201. When the bidirectional threaded rod 202 rotates, if there is no restriction of the guide shaft 204, the first guide block 301 and the second guide block 401 will rotate with the screw and cannot achieve linear movement. The guide shaft 204 passes through the guide hole 303 opened on the first guide block 301 and the second guide block 401, forcing the first guide block 301 and the second guide block 401 to only translate along the axial direction and not rotate, thereby ensuring that the first clamping block 3 and the second clamping block 4 move smoothly and accurately.

[0027] The lower part of the second clamping block 4 is connected to a lead wire. When the first clamping block 3 and the second clamping block 4 clamp the wire, the current is conducted to the lead wire through the second clamping block 4 to realize the circuit connection (i.e., connection). This design allows the clamping assembly to complete the electrical connection while mechanically clamping the wire. The structure is compact and the conductivity is reliable.

[0028] Working principle: In use, the bracket 1 is mounted on the wire via rollers 102 on its outer wall. The V-groove of the rollers 102 automatically conforms to the outer wall of the wire using its self-centering characteristic, so that the device is stably mounted on the wire and can move on the wire to a preset contact position. Due to the differences in wire diameter and insulation thickness of different specifications of wires, the center height of the wire will change relative to the rollers 102 after mounting. Specifically, when the wire diameter is large or the insulation is thick, the wire is embedded shallower in the V-groove of the rollers 102, and its actual center position is relatively lower; when the wire diameter is small or the insulation is thin, the wire is embedded deeper in the V-groove, and its actual center position is relatively higher. That is, the center height of the wire will have a vertical displacement depending on the specification. At this time, the tension spring body 7 in the elastic mechanism continuously applies an elastic tension towards the second fixed rod 702 to the first fixed rod 701. Under the limitation of the sliding shaft 203 and the fixing member 101, when the clamping is not activated, the lower end face of the first support plate 205 is in contact with the upper end face of the fixing member 101. That is, in the initial state, the fire-connecting clamping assembly is in the lowest position. At this time, the first clamping block 3 and the second clamping block 4 are located on both sides of the bidirectional threaded rod 202. The first clamping block 3 is located above the V-groove working surface of the roller 102 that contacts the wire, leaving sufficient space for the wire to pass through. After the roller 102 is mounted on the wire, the wire is located between the first clamping block 3 and the second clamping block 4. The drive motor 6 is started and runs. Its output end drives the first transmission gear 601 to rotate. Through gear meshing, the second transmission gear 602 is driven to rotate, thereby driving the bidirectional threaded rod 202 mounted between the first support plate 205 and the second support plate 201 to rotate synchronously. During operation, the first guide block 301 and the second guide block 401 form a precision threaded fit through their own threaded holes 302 and the positive thread section and negative thread section of the bidirectional threaded rod 202, respectively. Under the limiting constraint of the parallel-arranged guide shaft 204 and the guide hole 303, the first guide block 301 and the second guide block 401 will not rotate circumferentially with the bidirectional threaded rod 202. They can only make synchronous linear movements in opposite directions along the axial direction, thereby driving the first clamping block 3 and the second clamping block 4 to move from both sides of the bidirectional threaded rod 202 toward the center of the bidirectional threaded rod 202. During the clamping process, when the center point of the wire is completely aligned with the preset reference clamping center point of the roller 102, the lower end face of the first support plate 205 remains in contact with the upper end face of the fixing member 101. At this time, the fire-connecting clamping assembly is still in the lowest position, and the wire does not lift the connecting mechanism 2. The first clamping block 3 and the second clamping block 4 simultaneously and symmetrically contact the wire from both sides and clamp it under the drive of the bidirectional threaded rod 202. The clamping center, the preset reference center of the roller 102, and the center of the wire are aligned, and the force is balanced. The elastic mechanism only maintains the centering preload without generating additional correction displacement. When the center point of the wire shifts relative to the preset reference clamping center point of the roller 102, the first clamping block 3 and the second clamping block 4 simultaneously contact the wire and clamp it. First, clamp 3 contacts the wire, while the second clamp 4 has not yet contacted the wire. At this time, the adaptive compensation begins to work: when the first clamp 3 touches the wire and is resisted by the wire, the first clamp 3 and the second clamp 4 are still clamped towards the middle under the drive of the bidirectional threaded rod 202. Under the action of the wire resistance, the entire fire-connecting clamping assembly overcomes the tension of the tension spring body 7 and moves away from the fixing member 101. The sliding shaft 203 slides smoothly upward in the sliding hole of the fixing member 101, so that the clamping center point of the first clamp 3 and the second clamp 4 adaptively moves towards the direction that coincides with the center point of the wire, until the clamping center of the first clamp 3 and the second clamp 4 coincides with the center of the wire after clamping. After the clamping action is completed, the thread drive of the bidirectional threaded rod 202 has a self-locking characteristic, which can maintain a stable clamping force for a long time even if the subsequent drive motor 6 is de-energized, and there will be no loosening. At the same time, in the initial stage of the clamping mechanism's action, the integral frame-type connecting mechanism 2, which consists of the first support plate 205, the second support plate 201 and the sliding shaft 203, has reserved sufficient vertical floating stroke by limiting the sliding shaft 203 through the fixing part 101. Moreover, the protective cover 5 fixed to the bottom of the second support plate 201 covers the first transmission gear 601 and the second transmission gear 602, reducing the entry of debris into the meshing area at the work site and reducing the safety hazard of accidentally touching the rotating parts. Finally, with the coordinated cooperation of all the components, the stable wire connection clamping operation is completed.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adaptive electrically powered double-sided clamp block firing structure, characterized by, include: The bracket (1) and the roller (102) disposed on the bracket (1); The fire-receiving clamping assembly is located on one side of the roller (102); The adjustment component includes a connecting mechanism (2) and an elastic mechanism. The fire-holding component is slidably connected to the bracket (1) through the connecting mechanism (2). The elastic mechanism is disposed between the bracket (1) and the connecting mechanism (2). The elastic mechanism is configured to apply a return force to the fire-receiving clamping assembly to drive the fire-receiving clamping assembly to slide relative to the bracket (1), so that the clamping position of the fire-receiving clamping assembly relative to the wire is adaptively kept centered.

2. The adaptive electrically powered double-sided clamp block igniter structure of claim 1, wherein, The connecting mechanism (2) includes a sliding shaft (203) vertically mounted on the bracket (1). The two ends of the sliding shaft (203) are slidably mounted on the bracket (1) through guide supports. The fire-receiving clamping assembly is fixedly connected to the sliding shaft (203).

3. The adaptive electrically powered double-sided clamp block igniter structure of claim 2, wherein, The guide support includes a fixing member (101) fixedly installed on the outer wall of the bracket (1). The fixing member (101) has a sliding hole that slides with the sliding shaft (203), so that the connecting mechanism (2) can slide along the axial direction of the sliding shaft (203).

4. The adaptive electrically powered double-sided clamp block igniter structure of claim 2, wherein, The elastic mechanism includes a tension spring body (7), one end of which is fixedly connected to the fire-receiving clamping assembly, and the other end is fixedly connected to the bracket (1) to apply a return centering tension force to the fire-receiving clamping assembly.

5. The adaptive electrically powered double-sided clamp block igniter structure of claim 1, wherein, The fire-receiving clamping assembly includes a clamping member, a drive motor (6), and a transmission structure. The clamping member includes a first clamping block (3) and a second clamping block (4) arranged opposite to each other.

6. The adaptive electric double-sided clamping block fire-fighting structure according to claim 5, characterized in that, The transmission structure is a bidirectional threaded transmission, which includes a bidirectional threaded rod (202). The bidirectional threaded rod (202) is threadedly connected to the first clamping block (3) and the second clamping block (4) through bidirectional threads. The drive motor (6) is poweredly connected to the bidirectional threaded rod (202) through a transmission gear set.

7. The adaptive electric double-sided clamping block fire-fighting structure according to claim 6, characterized in that, At least one guide shaft (204) is provided between the first clamping block (3) and the second clamping block (4) for guiding the clamping and releasing of the first clamping block (3) and the second clamping block (4).

8. The adaptive electric double-sided clamping block fire-fighting structure according to claim 5, characterized in that, The lower part of the second clamp (4) is connected to a drain line.

9. The adaptive electric double-sided clamping block fire-connecting structure according to claim 1, characterized in that, The roller (102) is a V-shaped roller.

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