CN117060185A

CN117060185A - Compact type confluence clamp

Info

Publication number: CN117060185A
Application number: CN202210493125.7A
Authority: CN
Inventors: 应伟亮; 龚海晏
Original assignee: Zhixing Electronics Suzhou Co ltd
Current assignee: Zhixing Electronics Suzhou Co ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2023-11-14

Abstract

The invention discloses a compact busbar clamp, which comprises a clamp body (1) and a socket assembly (2), wherein the clamp body (1) comprises a fixed clamp head (12), a movable clamp head (13), adjusting parts (14, 18) and a fixed plate (15); a clamping space is formed between the fixed clamp head (12) and the movable clamp head (13); the socket assembly (2) comprises a jack sleeve (22), and the jack sleeve (22) is fixedly connected with the fixed clamp head (12); the part of the fixed plate (15) corresponding to the clamping space is provided with a threaded hole (16), and the adjusting piece (14) passes through the threaded hole (16) to be fixedly connected with the movable clamp head (13); the reciprocating movement of the movable clamp head (13) is realized by the axial movement of the adjusting piece (14). The confluence clamp disclosed by the invention has the advantages of simple and compact structure, increased puncture effectiveness and clamping reliability and simplicity in operation.

Description

Compact type confluence clamp

Technical Field

The invention belongs to the technical field of distribution network uninterrupted operation tools, and particularly relates to a compact type confluence clamp.

Background

At present, in order to realize the connection of the low-voltage output end and the user end of a mobile box transformer substation vehicle, an emergency power generation vehicle and a power generation unit in the distribution network uninterrupted operation maintenance process, the copper nose on the low-voltage cable is connected with the busbar in the user end low-voltage cabinet through bolts, and the connection mode is long in operation time and has the risk of human body electric shock. With the rapid development of urban construction, the requirements for power supply reliability are higher and higher, and accordingly the use frequency of various operation vehicles such as box-type vehicles, power generation vehicles and the like is greatly increased, and bus clamps are often used when the low-voltage sides of the box-type vehicles and the power generation vehicles are connected with a bus bar at a user side.

CN212908472U discloses an adjustable busbar clamp, which comprises a clamp body, a cable crimping body and a loop bar, wherein a rear movable clamp head of the clamp body can be far away from or close to a front fixed clamp head and can be suitable for clamping cables with different sizes, and the front and rear movement of the rear movable clamp head is realized through a push-pull rod positioned in the loop bar. Because the loop bar adopts the hollow structure, the manufacturing difficulty is increased, the current-carrying capacity is reduced, the axis of the loop bar and the axis of the cable crimping body are almost perpendicularly intersected, the structure makes the structure of the cable crimping body complex, the whole appearance length and the weight of the confluence clamp are relatively large, and the space and the convenience of on-site operation are not very friendly.

The puncture blade in the existing busbar clamp is formed by stamping, and the contact resistance in the conductive path is increased in a detachable mode. Meanwhile, the clamping reaction force of the clamping busbar is born by a single thin puncture blade, so that the clamping busbar is easy to damage after repeated use. The puncture blade of the existing busbar clamp acts on the copper bar in a mode of eccentric force application rather than direct positive force application, and the puncture effectiveness and reliability are relatively poor.

Disclosure of Invention

The object of the present invention is to provide a compact busbar clamp by means of which the above-mentioned problems are solved.

In order to achieve the above purpose, the technical scheme of the invention is to provide a compact busbar clamp, which comprises a clamp body and a socket assembly, wherein the clamp body comprises a fixed clamp head, a movable clamp head, an adjusting piece and a fixed plate which are arranged in an insulating sleeve; a clamping space is formed between the fixed clamp head and the movable clamp head; the socket assembly comprises a jack sleeve arranged in the insulating shell, and the front end of the jack sleeve stretches into the insulating sleeve and penetrates through the fixing plate to be fixedly connected with the fixing clamp head; the part of the fixed plate corresponding to the clamping space is provided with a threaded hole, and the adjusting piece penetrates through the threaded hole to be fixedly connected with the movable clamp head; the reciprocating movement of the movable clamp head is realized through the axial movement of the adjusting piece. Through the structure, the structure is simplified, the copper bar is acted in a positive force application mode, the puncture effectiveness and the clamping reliability are improved, and the rear end of the copper bar is simple to operate by using a tool during operation.

Further, the adjusting piece is an adjusting bolt, and the adjusting bolt is in threaded fit with the threaded hole.

Furthermore, one end of the movable clamp head is sleeved on the jack sleeve and is electrically connected through a reed, and the adjusting piece is an adjusting screw rod; the drive nut is provided with an internal thread through hole, an external thread and a limiting head, the external thread of the drive nut is in threaded fit connection with the threaded hole, the internal thread through hole is in threaded fit connection with the adjusting screw, the adjusting screw is fixedly connected with the other end of the movable clamp head, and the pitches of the two threads in threaded fit are different.

Further, the fixed clamp head is provided with an integrally formed piercing blade, and preferably, the movable clamp head is provided with an integrally formed piercing blade. Through the arrangement, the puncture point and the clamp seat are integrally formed, the problem that the contact pair is increased when the puncture blade and the clamp seat are clamped in the prior art is solved, and the integral contact resistance is optimized due to the structural improvement; meanwhile, the service life of the puncture point is prolonged by integrated forming, and the problem that the puncture blade is easy to damage due to larger stress after being used for a plurality of times in the prior art is solved.

Further, the socket assembly is provided with a locking mechanism which is matched and locked with the plug; the locking mechanism comprises an elastic piece sleeved on the jack sleeve; one side of the elastic piece, which faces the jack sleeve, is connected with a limiting gasket, and the jack sleeve is provided with a stop groove which can be in locking fit with the plug.

Further, the socket assembly further comprises a stop block, the stop block is fixedly connected with the jack sleeve, an elastic conical ring is arranged on the outer wall of the stop block, and the inside of the insulating shell is clamped with the elastic conical ring.

Furthermore, the inside guard pin that is equipped with of jack cover rear end, the tip of guard pin is equipped with prevents touching and indicates the cap, prevent touching and indicate the cap with the guard pin all adopts insulating material to make.

Further, a sealing ring and an insulating cap are arranged at the rear end of the jack sleeve. The whole sealing ring is adopted for protection, so that the water and dust are prevented from entering.

The invention has compact design structure, is suitable for the scene with smaller operation space, has light weight, reduces bending moment born by the busbar and the insulator in the cabinet during use, acts on the copper bar in a positive force application mode, increases puncture effectiveness and reliability, and is simple to operate at the rear end by using tools during operation.

Drawings

Fig. 1 is a schematic view of the external structure of embodiment 1 of the present invention.

Fig. 2 is a split schematic diagram of embodiment 1 of the present invention.

Fig. 3 is a sectional view showing the internal structure of embodiment 1 of the present invention.

Fig. 4 is a cross-sectional view showing the internal structure of embodiment 2 of the present invention.

Detailed Description

The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.

Example 1:

as shown in fig. 1-3, a compact busbar clamp comprises a clamp body 1 and a socket assembly 2, wherein the clamp body 1 comprises a fixed clamp head 12, a movable clamp head 13, an adjusting bolt 14 and a fixed plate 15 which are arranged in an insulating sleeve 11. A clamping space is formed between the fixed clamp head 12 and the movable clamp head 13. The part of the fixed plate 15 corresponding to the clamping space is provided with a threaded hole 16, an adjusting bolt 14 is screwed into the threaded hole 16, the end part of the adjusting bolt 14 is fixedly connected with the movable clamp head 13, and the movable clamp head 13 moves towards the direction of the fixed clamp head 12 by screwing the adjusting bolt 14, so that the copper bar is clamped.

The fixed jaw 12 is provided with a piercing blade 17, and preferably the fixed jaw 12 and the piercing blade 17 are integrally formed.

The receptacle assembly 2 includes a jack housing 22 disposed within an insulating housing 21. The front end of the jack sleeve 22 extends into the insulating sleeve 11 and passes through the fixing plate 15 to be fixedly connected with the fixing clamp head 12. An adjusting sleeve 17 is sleeved on the jack sleeve 22 between the fixing plate 15 and the fixing clamp head 12, and the adjusting sleeve 17 with corresponding specification can be selected according to the thickness of the clamped copper bar.

The socket assembly 2 is provided with a locking mechanism which is locked with the plug in a matching way. The locking mechanism comprises a pressure spring 23 sleeved at the rear end of the jack sleeve 22. One side of the pressure spring 23 facing the tail end of the jack sleeve 22 is connected with a limit gasket 24, a limit boss for limiting the limit gasket 24 is arranged on the jack sleeve 22, a stop groove (not shown) commonly used in the prior art is arranged on the jack sleeve 22, and when the plug is inserted and rotated for a certain angle, a locking pin on the plug can be clamped into the stop groove. After the copper bars are clamped, the plug is inserted into the jack sleeve 22, after the plug is inserted into the jack sleeve 22, the end part of the plug shell is contacted with the limiting gasket 24, the pressure spring 23 is compressed, then the plug is horizontally rotated and the force applied to the plug is released, the pressure spring 23 is reset, and the plug is clamped in the limiting groove of the jack sleeve 22, so that the plug is prevented from falling off.

The other side of the pressure spring 23 is connected with a stop block 25, and the jack sleeve 22 is sleeved with the pressure spring 23 and the stop block 25 in sequence along the plug insertion direction. The other side of the stop block 25 is limited by a check ring 26 for a shaft which is fixed on the jack sleeve 22; the outer wall of the stop block 25 is provided with an elastic conical ring 27, and the inside of the insulating shell 21 is clamped with the elastic conical ring 27.

The inside guard pin 28 that is equipped with in jack cover 22 rear end, the tip of guard pin 28 is equipped with prevents touching and indicates cap 29, prevents touching and indicates cap 29 and guard pin 28 and all adopts insulating material to make, avoids the finger to insert in the jack cover 22 by mistake. The rear end of the socket sleeve 22 is screwed with an insulating cap 30.

A sealing ring 31 is also arranged at the rear end of the jack sleeve 22; when the plug is inserted into the jack sleeve 22, the plug is in close contact with the seal ring 31, forming a seal, preventing moisture/dust from entering the jack sleeve 22.

Example 2

Unlike example 1, as shown in fig. 4: the movable jaw 13 has a forked end (fork-shaped, conventional in the art, not shown) which is slipped over the socket sleeve 22 and is electrically connected by means of a spring. The movable clamp head 13 is also provided with a puncture blade 17, and the movable clamp head 13 and the puncture blade 17 are preferably integrally formed.

The fixing plate 15 is provided with screw holes 16 at portions corresponding to the clamping spaces. The drive nut 17 is provided with an internal thread through hole 171, an external thread 172 and a limiting head 173, the external thread 172 of the drive nut 17 is in threaded fit connection with the threaded hole 16, the internal thread through hole 171 is in threaded fit connection with the adjusting screw 18, and the adjusting screw 18 is fixedly connected with the other end of the movable clamp head 13. The screw pitches of the two screw matches are different, and the movable clamp head 13 moves towards the fixed clamp head 12 by rotating the driving nut 17, so that the copper bar is clamped. The limit head 173 is used to limit the maximum range of the advance of the adjusting screw.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims

1. A compact busbar clamp comprising a clamp body (1) and a socket assembly (2), characterized in that: the clamp body (1) comprises a fixed clamp head (12), a movable clamp head (13), adjusting parts (14, 18) and a fixed plate (15) which are arranged in an insulating sleeve (11); a clamping space is formed between the fixed clamp head (12) and the movable clamp head (13); the socket assembly (2) comprises a jack sleeve (22) arranged in an insulating shell (21), the front end of the jack sleeve (22) stretches into the insulating sleeve (11) and is fixedly connected with the fixed clamp head (12) through the fixing plate (15); the part of the fixed plate (15) corresponding to the clamping space is provided with a threaded hole (16), and the adjusting piece (14) passes through the threaded hole (16) to be fixedly connected with the movable clamp head (13); the reciprocating movement of the movable clamp head (13) is realized by the axial movement of the adjusting piece (14).

2. The compact busbar clamp as set forth in claim 1, wherein: the adjusting parts (14, 18) are adjusting bolts (14), and the adjusting bolts (14) are in threaded fit with the threaded holes (16).

3. The compact busbar clamp as set forth in claim 2, wherein: an adjusting sleeve (17) is sleeved on the jack sleeve (22) and positioned between the fixing plate (15) and the fixing clamp head (12).

4. A compact busbar clamp according to any one of claims 1 to 3, wherein: the fixed clamp head (12) is provided with an integrally formed piercing knife blade (17).

5. The compact busbar clamp as set forth in claim 1, wherein: the movable clamp head (13) is provided with a fork-shaped end, the fork-shaped end is sleeved on the jack sleeve (22) in a forked mode and is electrically connected through a reed, and the adjusting parts (14, 18) are adjusting screws (18); the driving nut (17) is provided with an internal thread through hole (171), an external thread (172) and a limiting head (173), the external thread (172) of the driving nut (17) is connected with the threaded hole (16) in a threaded fit mode, the internal thread through hole (171) is connected with the adjusting screw (18) in a threaded fit mode, the adjusting screw (18) is fixedly connected with the other end of the movable clamp head (13), and the pitches of the two threaded fit modes are different.

6. The compact busbar clamp of claim 5, wherein: the fixed clamp head (12) and the movable clamp head (13) are provided with a puncture blade (17) which is formed integrally.

7. A compact busbar clamp according to claim 2 or 5, wherein: the socket assembly (2) is provided with a locking mechanism which is matched and locked with the plug; the locking mechanism comprises an elastic piece (23) sleeved on the jack sleeve (22); one side of the elastic piece (23) facing the jack sleeve (22) is connected with a limiting gasket (24), and the jack sleeve (22) is provided with a stop groove which can be in locking fit with a plug.

8. The compact busbar clamp of claim 7, wherein: the socket assembly (2) further comprises a stop block (25), the stop block (25) is fixedly connected with the jack sleeve (22), an elastic conical ring (27) is arranged on the outer wall of the stop block (25), and the inside of the insulating shell (21) is clamped with the elastic conical ring (27).

9. A compact busbar clamp according to claim 2 or 5, wherein: the jack sleeve (22) is characterized in that a protective needle (28) is arranged in the rear end of the jack sleeve, a finger-touching preventing cap (29) is arranged at the end part of the protective needle (28), and the finger-touching preventing cap (29) and the protective needle (28) are made of insulating materials.

10. A compact busbar clamp according to claim 2 or 5, wherein: the rear end of the jack sleeve (22) is provided with a sealing ring (31) and an insulating cap (30).