Confluence clamp

Abstract

The utility model discloses a confluence clamp, which comprises a tubular main conductor made of conductive materials, a conductive seat connected to the front end of the main conductor in a sliding manner, and two clamp claws movably connected to the front part of the main conductor and symmetrically arranged, grasping parts are arranged on the opposite sides of the front ends of the two clamp claws, and a clamping interval capable of clamping a copper bar is formed between the two grasping parts and the conductive seat; the rear end of the conductive seat is rotationally connected with an adjusting screw rod, and the adjusting screw rod is in threaded connection with the main conductor, so that the conductive seat can move relative to the length direction of the main conductor, and the width of the clamping interval is further changed; a rotary driving rod is rotationally connected into the main conductor, the rotary driving rod and the adjusting screw rod are coaxially connected in an inserted mode, and the inserted part is non-circular, so that the rotary driving rod drives the adjusting screw rod to rotate synchronously when rotating. According to the utility model, the stability of connection between the confluence clamp and the copper bar is improved, and the convenience of operation is improved at the same time.

Description

Technical Field

[0001] The utility model belongs to the field of power connectors, and in particular relates to the structure of a current collector clamp. Background Art

[0002] Most of the existing busbar clamps have an appearance as disclosed in patent document CN202221079091.9, and their general appearance is F-shaped, that is, the fixed clamp head and the movable clamp head that constitute the clamping space are located on one side of the busbar clamp as a whole. The main disadvantage of the busbar clamp with this structure is that when the spacing between the copper busbars is small, it is difficult for the clamp head at the end of the busbar clamp to extend to the back side of the copper busbar. Especially for the copper busbar in a non-side position, it is often necessary to adjust the clamping space to a large size so that the clamp head at the end tends to penetrate from the gap between the copper busbars in a direction perpendicular to the copper busbar, and then the busbar clamp is rotated as a whole so that the clamp head at the end gradually moves to the back of the copper busbar. The actual operation is time-consuming and laborious. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in view of the deficiencies in the prior art, a busbar clamp is provided which has a strong clamping structure stability and is convenient to operate when clamped on a copper busbar.

[0004] In order to achieve the purpose of the utility model, the following technical scheme is adopted: a busbar clamp comprises a main conductor of a tubular conductive material, a conductive seat slidably connected to the front end of the main conductor, and two symmetrically arranged clamp claws movably connected to the front part of the main conductor;

[0005] A gripping portion is provided on one side of the front ends of the two clamp claws facing each other, and a gripping area capable of gripping the copper busbar is formed between the two gripping portions and the conductive seat;

[0006] The rear end of the conductive seat is rotatably connected to an adjusting screw, and the adjusting screw is threadedly connected to the main conductor, so that the conductive seat can move relative to the length direction of the main conductor, thereby changing the width of the clamping interval;

[0007] A rotating drive rod is rotatably connected in the main body, the rotating drive rod and the adjusting screw are coaxially plugged in, and the plugged parts are non-circular, so that the adjusting screw is driven to rotate synchronously when the rotating drive rod rotates.

[0008] As a preferred solution: the front part of the main conductor is fixedly connected with a fixed clamp frame, and the two clamp claws are respectively rotatably connected with the fixed clamp frame; the rear part of the clamp claw is provided with a strip hole, and the main conductor is slidably connected with a sliding clamp frame located at the rear side of the fixed clamp frame, and the sliding clamp frame is provided with a sliding rod, and the sliding clamp frame is slidably connected with the strip hole through the sliding rod; there is an angle between the length direction of the strip hole and the length direction of the main conductor, so that when the sliding clamp frame moves along the front and rear direction of the main conductor, it can drive the front ends of the two clamp claws to rotate and open or close;

[0009] Alternatively, the positions of the strip-shaped hole and the sliding rod are swapped.

[0010] As a preferred solution: the outer wall of the main conductor is located at the rear side of the sliding clamp frame, and a sliding sleeve made of insulating material is provided on the sliding sleeve, and the sliding sleeve is relatively fixedly connected to the sliding clamp frame;

[0011] The outer wall of the main conductor is located at the rear side of the sliding handle sleeve, and the fixed sleeve is provided with an insulating shell. An annular cavity is formed between the front inner wall of the insulating shell and the outer wall of the main conductor, and an extension sleeve is provided at the rear end of the sliding handle sleeve to be inserted into the cavity; when the sliding handle sleeve moves to the extreme position toward the conductive seat, a part of the extension sleeve is still located in the annular cavity.

[0012] As a preferred solution: the front end of the main conductor is threadedly connected to a clamp frame fixing ring, the front outer wall of the main conductor is provided with a shoulder portion, and the fixed clamp frame is positioned between the shoulder portion and the clamp frame fixing ring.

[0013] As a preferred solution: the front end of the adjusting screw is provided with a ball head, the rear end of the conductive seat is provided with a ball head cavity, the ball head is accommodated in the ball head cavity, and the rear end of the conductive seat is threadedly connected with a first nut, the first nut restricts the ball head in the ball head cavity;

[0014] The rear part of the adjusting screw is provided with a polygonal transmission tube body, and at least the front part of the rotating drive rod is a transmission rod with a polygonal rod body adapted to the shape of the transmission tube body;

[0015] Alternatively, the positions of the transmission tube body and the transmission rod are swapped.

[0016] As a preferred solution: the rear end of the main conductor is a cable socket part, and a drive rod connecting part is provided on the main conductor in front of the cable connector connecting part, and a second nut is connected to the drive rod connecting part, which prevents the rotating drive rod from escaping from the rear end of the main conductor.

[0017] As a preferred solution: a positioning portion abutting against the second nut is provided on the rotation drive rod, and a spring is provided between the end of the positioning portion away from the second nut and the main conductor.

[0018] As a preferred solution: a second annular groove is provided on the inner wall of the cable socket portion, and a second conductive contact strip is installed in the second annular groove.

[0019] As a preferred solution: a conductive socket connection portion is provided at the front end of the main conductor, a first annular groove is provided on the inner wall of the conductive socket connection portion, a first conductive contact strip is installed in the first annular groove, and the first conductive contact strip ensures that the conductive socket and the main conductor are always electrically connected.

[0020] As a preferred solution: the outer wall of the main conductor is provided with a shell sleeve portion with a non-circular cross-section, the outer wall of the main conductor is located on the rear side of the shell sleeve portion and is provided with a buckle positioning groove, an elastic conical buckle is installed in the buckle positioning groove, the insulating shell is sleeved onto the outer wall of the main conductor from the rear end of the main conductor, and is positioned between the front end of the shell sleeve portion and the conical buckle.

[0021] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model designs two symmetrically arranged claws, and the gripping parts with smaller width at the ends of the claws can easily extend from both sides of the copper bar to the rear of the copper bar, and then the inner sides of the claws are made close to or against the sides of the copper bar by rotating the claws, so that the gripping parts are abutted against the back of the copper bar, that is, after the gripping parts are abutted against the back of the copper bar, the two claws are functionally equivalent to the fixed clamp head in the prior art, and then the conductive seat is driven forward by rotating the driving rod until it is tightly abutted against the copper bar, thereby forming a stable electrical connection, that is, the conductive seat that can move back and forth is equivalent to the movable clamp head in the prior art.

[0022] That is to say, since the two claws that serve as fixed clamp heads are designed as symmetrical structures, the two gripping parts only need a small contact area to ensure stable contact between the conductive seat and the front of the copper busbar. Therefore, compared with the existing clamp heads, the gripping parts can be more conveniently moved to the back of the copper busbar and abut against it. That is, the utility model not only improves the stability of the connection between the bus clamp and the copper busbar, but also improves the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the use state of the utility model confluence clamp.

[0024] Figure 2 It is a schematic diagram of the utility model when the jaws of the converging clamp are in an open state.

[0025] Figure 3 It is a schematic diagram of the utility model when the jaws of the converging clamp are in a closed state.

[0026] Figure 4 It is a schematic cross-sectional view of the structure of the utility model when the jaws of the converging clamp are in an open state.

[0027] Figure 5It is a schematic cross-sectional structure diagram of the utility model when the jaws of the converging clamp are in a closed state.

[0028] Figure 6 It is a schematic diagram of the cross-sectional structure of the main conductor.

[0029] 1. Conductive seat; 11. Conductive needle; 2. Clamp claw; 200. Gripping part; 20. Strip hole; 21. Fixed clamp frame; 22. Sliding clamp frame; 23. Sliding handle; 24. Clamp frame fixing ring; 3. Main conductor; 301. Conductive seat plug-in part; 302. Adjusting screw connecting part; 303. Drive rod connecting part; 304. Cable socket part; 305. Shell sleeve part; 306. Buckle positioning groove; 31. First conductive contact strip; 32. Second conductive contact strip; 4. Insulating shell; 41. Conical buckle; 5. Adjusting screw; 51. Ball head; 52. Transmission tube body; 6. Rotating drive rod. DETAILED DESCRIPTION

[0030] according to Figures 1 to 6 As shown, this embodiment provides a busbar clamp, comprising a main conductor 3 of a tubular conductive material, a conductive seat 1 slidably connected to the front end of the main conductor, and two symmetrically arranged clamp claws 2 movably connected to the front end of the main conductor. A gripping portion 200 is provided on the front end of the two clamp claws facing each other, and a clamping interval capable of clamping a copper busbar is formed between the two gripping portions and the conductive seat. Anti-slip teeth are provided on the surface of the gripping portion facing the conductive seat.

[0031] The rear end of the conductive seat is rotatably connected to an adjusting screw 5, and the adjusting screw is threadedly connected to the main conductor, so that the conductive seat can move relative to the length direction of the main conductor, thereby changing the width of the clamping interval.

[0032] A rotating drive rod 6 is rotatably connected in the main body. The rotating drive rod and the adjusting screw are coaxially plugged in, and the plugged parts are non-circular, so that the adjusting screw can be driven to rotate synchronously when the rotating drive rod rotates.

[0033] A hexagonal column or a hexagonal hole is arranged at the rear of the rotary drive rod, and a wrench can be used to drive the rotary drive rod to rotate.

[0034] The front part of the main conductor is fixedly connected with a fixed clamp frame 21, and the two clamp claws are respectively connected to the fixed clamp frame for rotation; the rear part of the clamp claw is provided with a strip hole 20, and the main conductor is slidably connected with a sliding clamp frame 22 at the rear side of the fixed clamp frame, and the sliding clamp frame is provided with a sliding rod, and the sliding clamp frame is slidably connected with the strip hole through the sliding rod; there is an angle between the length direction of the strip hole and the length direction of the main conductor, so that when the sliding clamp frame moves along the front and rear direction of the main conductor, it can drive the front ends of the two clamp claws to rotate and open or close. In some other embodiments, the positions of the strip hole and the sliding rod can be swapped.

[0035] The outer wall of the main conductor is located at the rear side of the sliding clamp frame, and the sliding sleeve is provided with a sliding handle sleeve 23 made of insulating material. The sliding handle sleeve is relatively fixedly connected to the sliding clamp frame, that is, the user can drive the sliding clamp frame to move forward and backward through the sliding handle sleeve. The outer wall of the main conductor is located at the rear side of the sliding handle sleeve, and the fixed sleeve is provided with an insulating shell 4. An annular cavity is formed between the front inner wall of the insulating shell and the outer wall of the main conductor, and an extension sleeve is provided at the rear end of the sliding handle sleeve to be inserted into the cavity; when the sliding handle sleeve moves to the extreme position toward the conductive seat, a part of the extension sleeve is still located in the annular cavity. In other words, when the user holds the insulating shell with one hand and moves the sliding handle sleeve with the other hand, the main conductor will never be exposed, and the user will not come into contact with the main conductor.

[0036] The front end of the main conductor is threadedly connected with a clamp frame fixing ring 24, and the front outer wall of the main conductor is provided with a shoulder portion, and the fixed clamp frame is positioned between the shoulder portion and the clamp frame fixing ring.

[0037] The front end of the adjusting screw is provided with a ball head 51, the rear end of the conductive seat is provided with a ball head cavity, the ball head is accommodated in the ball head cavity, and the rear end of the conductive seat is threadedly connected with a first nut, the first nut restricts the ball head in the ball head cavity. The rear part of the adjusting screw is provided with a polygonal transmission tube body 52, and at least the front part of the rotating drive rod is a transmission rod with a polygonal rod body adapted to the shape of the transmission tube body.

[0038] In some other embodiments, the positions of the transmission tube body and the transmission rod are swapped.

[0039] The rear end of the main conductor is a cable socket portion 304, and a drive rod connection portion 303 is provided on the main conductor in front of the cable connector connection portion. A second nut is connected to the drive rod connection portion, and the second nut prevents the rotating drive rod from escaping from the rear end of the main conductor.

[0040] The rotation drive rod is provided with a positioning portion that abuts against the second nut, and a spring is provided between the end of the positioning portion away from the second nut and the main conductor. The spring enables the rotation drive rod to rotate under the drive of the wrench and ensures that it does not move in the length direction when not affected by external force.

[0041] The inner wall of the cable socket is provided with a second annular groove, in which a second conductive contact strip 32 is installed. After the cable plug is inserted into the cable socket, the cable plug forms a stable electrical connection with the main conductor through the second conductive contact strip.

[0042] The front end of the main conductor is provided with a conductive socket plug-in portion 301, the inner wall of which is provided with a first annular groove, in which a first conductive contact strip 31 is installed, and the first conductive contact strip ensures that the conductive socket and the main conductor are always electrically connected. The main conductor is located at the rear side of the conductive socket plug-in portion 301 and is provided with an adjusting screw connection portion 302 that is threadedly connected to the adjusting screw.

[0043] The outer wall of the main conductor is provided with a shell sleeve portion 305 with a non-circular cross-section, and the outer wall of the main conductor is provided with a snap positioning groove 306 at the rear side of the shell sleeve portion, and an elastic conical snap 41 is installed in the snap positioning groove. The insulating shell is sleeved onto the outer wall of the main conductor from the rear end of the main conductor and is positioned between the front end of the shell sleeve portion and the conical snap.

[0044] Conductive pins 11 are evenly arranged at the front end of the conductive seat; plug holes are evenly opened at the front end of the conductive seat, and the rear part of the conductive pins is connected with the plug holes by interference fit.

[0045] When fixing the busbar clamp to the copper busbar, first confirm whether the conductive seat has moved backward to the limit position. If not, first use a wrench to turn the rotary drive rod counterclockwise to drive the adjusting screw to rotate, so that the conductive seat moves backward. Then hold the insulating shell 4 with one hand and push the sliding handle forward with the other hand to make the front end of the clamp claw 2 open outward. Then extend the clamp claws from both sides of the target copper busbar to its rear, so that the conductive needle on the conductive seat is against the front end of the copper busbar, pull the sliding handle backward, and rotate the front end of the clamp claw inward to a closed state. At this time, the gripping part of the clamp claw is located on the back of the copper busbar. Then use a wrench to turn the rotary drive rod clockwise to drive the adjusting screw to rotate, so that the adjusting screw and the conductive seat move forward relative to the main conductor, that is, the clamping interval formed between the gripping part and the conductive seat gradually decreases, and finally the busbar clamp is clamped on the copper busbar.

[0046] The wrench can be a fixed torque wrench, so as to facilitate the predetermined clamping force between the bus clamp and the copper busbar.

Claims

1. A busbar clamp, characterized in that: The invention comprises a main conductor (3) of a tubular conductive material, a conductive seat (1) slidably connected to the front end of the main conductor, and two symmetrically arranged clamping claws movably connected to the front end of the main conductor; a gripping portion (200) is provided on the front end of the two clamping claws facing each other, and a clamping interval capable of clamping a copper bar is formed between the two gripping portions and the conductive seat; an adjusting screw (5) is rotatably connected to the rear end of the conductive seat, and the adjusting screw is threadedly connected to the main conductor, so that the conductive seat can move relative to the length direction of the main conductor, thereby changing the width of the clamping interval; a rotating drive rod (6) is rotatably connected to the main conductor, and the rotating drive rod and the adjusting screw are coaxially plugged together, and the plugged parts are non-circular, so that when the rotating drive rod rotates, the adjusting screw is driven to rotate synchronously.

2. A busbar clamp as claimed in claim 1, characterized in that: The front part of the main conductor is fixedly connected to a fixed clamp frame (21), and the two clamp claws are respectively rotatably connected to the fixed clamp frame; the rear part of the clamp claw is provided with a strip hole (20), and the main conductor is slidably connected to a sliding clamp frame (22) located on the rear side of the fixed clamp frame, and the sliding clamp frame is provided with a sliding rod, and the sliding clamp frame is slidably connected to the strip hole through the sliding rod; there is an angle between the length direction of the strip hole and the length direction of the main conductor, so that when the sliding clamp frame moves along the front and rear direction of the main conductor, it can drive the front ends of the two clamp claws to rotate to open or close; or, the positions of the strip hole and the sliding rod are swapped.

3. A busbar clamp as claimed in claim 2, characterized in that: The outer wall of the main conductor is located at the rear side of the sliding clamp frame, and the sliding sleeve is provided with a sliding handle sleeve (23) made of insulating material. The sliding handle sleeve is relatively fixedly connected to the sliding clamp frame; the outer wall of the main conductor is located at the rear side of the sliding handle sleeve, and the fixed sleeve is provided with an insulating shell (4), and an annular cavity is formed between the front inner wall of the insulating shell and the outer wall of the main conductor, and the rear end of the sliding handle sleeve is provided with an extension sleeve inserted into the cavity; when the sliding handle sleeve moves to the extreme position in the direction of the conductive seat, a part of the extension sleeve is still located in the annular cavity.

4. A busbar clamp as claimed in claim 2, characterized in that: The front end of the main conductor is threadedly connected to a clamp frame fixing ring (24), the front outer wall of the main conductor is provided with a shoulder portion, and the fixed clamp frame is positioned between the shoulder portion and the clamp frame fixing ring.

5. The current collector clamp according to claim 1, characterized in that: The front end of the adjusting screw is provided with a ball head (51), the rear end of the conductive seat is provided with a ball head cavity, the ball head is accommodated in the ball head cavity, and the rear end of the conductive seat is threadedly connected with a first nut, the first nut restricts the ball head in the ball head cavity; the rear part of the adjusting screw is provided with a polygonal transmission tube body (52), and at least the front part of the rotating drive rod is a transmission rod with a polygonal rod body adapted to the shape of the transmission tube body; or, the positions of the transmission tube body and the transmission rod are swapped.

6. A busbar clamp as claimed in claim 5, characterized in that: The rear end of the main conductor is a cable socket portion (304), and a drive rod connection portion (303) is provided on the main conductor in front of the cable connector connection portion. A second nut is connected to the drive rod connection portion, and the second nut prevents the rotating drive rod from escaping from the rear end of the main conductor.

7. A current collector clamp as claimed in claim 6, characterized in that: The rotary drive rod is provided with a positioning portion that abuts against the second nut, and a spring is provided between the end of the positioning portion away from the second nut and the main conductor.

8. A busbar clamp as claimed in claim 6, characterized in that: The inner wall of the cable socket portion is provided with a second annular groove, and a second conductive contact strip (32) is installed in the second annular groove.

9. The busbar clamp according to claim 1, characterized in that: A conductive socket plug-in portion is provided at the front end of the main conductor, a first annular groove is provided on the inner wall of the conductive socket plug-in portion, a first conductive contact strip (31) is installed in the first annular groove, and the first conductive contact strip ensures that the conductive socket and the main conductor are always electrically connected.

10. The current bus clamp according to claim 3, characterized in that: The outer wall of the main conductor is provided with a shell sleeve portion (305) having a non-circular cross section, the outer wall of the main conductor is provided with a buckle positioning groove (306) at the rear side of the shell sleeve portion, and an elastic conical buckle (41) is installed in the buckle positioning groove, and the insulating shell is sleeved onto the outer wall of the main conductor from the rear end of the main conductor and is positioned between the front end of the shell sleeve portion and the conical buckle.

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