Adjustable multi-branch connecting wire clamp

Abstract

The invention discloses an adjustable multi-branch connecting wire clamp, and relates to the technical field of electric power engineering. The at least two branch casing pipes are movably arranged on the outer wall of the main casing pipe in a sleeving manner and comprise puncturing pieces; the branch pipe is arranged on the outer wall of the branch sleeve and comprises a mounting hole and a conductive paste block arranged in the mounting hole; the annular conductor is arranged between the main sleeve and the branch sleeve; the branch sleeves are movably arranged on the outer wall of the main sleeve in a sleeving mode, so that the branch direction can be flexibly adjusted, and the multi-angle wiring requirement is met; the annular conductor arranged between the main sleeve and the branch sleeve is punctured by the puncturing piece, so that the gap between the main cable and the inner wall of the main sleeve is automatically filled with the electric force compounded grease, the contact area is obviously increased, and the contact resistance is reduced; the conductive paste block is arranged in the branch pipe, the branch cable is automatically punctured when being inserted, uniform coating and corrosion prevention of a branch side interface are achieved, electrochemical corrosion in copper-aluminum connection is effectively prevented, and the jackscrew is matched with the arc-shaped clamping plate to ensure that the branch cable is stable and does not loosen.

Description

Technical Field

[0001] This invention relates to the field of power engineering technology, and in particular to an adjustable multi-branch connection clamp. Background Technology

[0002] In low-voltage power distribution systems, power metering, distribution, and branch wiring often rely on power connection hardware. Among these, T-clamps, as key transition components between main lines and branch lines, are widely used in meter installation, transformer substation wiring, and temporary power supply. These clamps must possess good conductivity, reliable mechanical clamping force, and long-term operational stability to ensure low electrical contact surface resistance, controllable temperature rise, and resistance to loosening or oxidation corrosion. With the development of smart grids and distributed energy resources, higher demands are placed on the flexibility, number of branches, and installation adaptability of power distribution connection devices.

[0003] However, the existing traditional T-shaped clamp structure is fixed and usually only supports a single branch direction. It cannot flexibly adjust the branch angle according to the on-site wiring requirements and is difficult to adapt to complex cable connections. Moreover, due to the limited number of branches, it is difficult to meet the needs of multiple power sources or future expansion. Furthermore, the conductor contact surface is small and lacks an effective interface treatment mechanism, resulting in high contact resistance and poor conductivity. During long-term operation, it is prone to contact deterioration due to oxidation or electrochemical corrosion, which increases energy consumption and may even cause overheating failures, directly affecting the reliability and energy efficiency of power supply.

[0004] Based on the above problems, we propose an adjustable multi-branch connector clamp. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is: how to provide an adjustable, multi-branched electrical connection clamp with low contact resistance and long-term stable conductivity, so as to overcome the technical defects of traditional T-shaped clamps, such as limited number of branches, non-adjustable direction, and poor contact performance.

[0006] The above-mentioned technical problems are solved by the following technical solution: This invention proposes an adjustable multi-branch connection clamp, which includes a main sleeve; at least two branch sleeves movably sleeved on the outer wall of the main sleeve, each including a piercing element; a branch tube disposed on the outer wall of the branch sleeve, including a mounting hole and a conductive paste block disposed in the mounting hole; and an annular conductor disposed between the main sleeve and the branch sleeve; when the main cable conductor is inserted into the main sleeve, the piercing element penetrates the branch sleeve and pierces the annular conductor; when the branch cable conductor is inserted into the mounting hole, one end of the branch cable can pierce the conductive paste block.

[0007] In a preferred embodiment of the adjustable multi-branch connecting clamp of the present invention: the outer wall of the main sleeve is circumferentially arrayed with several through holes, and the piercing member can penetrate the branch sleeve and extend into the corresponding through hole.

[0008] In a preferred embodiment of the adjustable multi-branch connector of the present invention: an arc-shaped plate is provided inside the branch pipe, and a set screw is movably provided on the outer wall of the branch pipe.

[0009] In a preferred embodiment of the adjustable multi-branch connection clamp of the present invention: the branch sleeve includes a first clamping plate disposed at one end of the branch pipe, and a second clamping plate is movably disposed on the outer wall of the first clamping plate.

[0010] In a preferred embodiment of the adjustable multi-branch connecting clamp of the present invention: the outer wall of the first clamping plate is provided with a first positioning post, the outer wall of the second clamping plate is provided with a first positioning hole, and the first positioning post and the first positioning hole are movably engaged.

[0011] In a preferred embodiment of the adjustable multi-branch connector clamp of the present invention: the first clamping plate and the second clamping plate are connected by a detachable fastener.

[0012] In a preferred embodiment of the adjustable multi-branch connection clamp of the present invention: the main sleeve includes a first buckle tube disposed in the branch sleeve, and a second buckle tube is movably disposed on the outer wall of the first buckle tube.

[0013] In a preferred embodiment of the adjustable multi-branch connecting clamp of the present invention: the outer wall of the first clamp tube is provided with a second positioning post, the outer wall of the second clamp tube is provided with a second positioning hole, and the second positioning post and the second positioning hole are movably engaged.

[0014] In a preferred embodiment of the adjustable multi-branch connection clamp of the present invention: the outer wall of the branch sleeve is provided with a heat-conducting plate, and the outer wall of the heat-conducting plate is provided with heat-conducting fins.

[0015] In a preferred embodiment of the adjustable multi-branch connector of the present invention: the piercing element is any one of screw, bolt or pin.

[0016] The beneficial effects of this invention are as follows: by movably fitting multiple branch sleeves onto the outer wall of the main sleeve, the branch direction can be flexibly adjusted to meet the needs of multi-angle wiring; an annular conductor is set between the main sleeve and the branch sleeve, and the conductor is punctured by a piercing device, so that the electrical compound grease automatically fills the gap between the main cable and the inner wall of the main sleeve, significantly increasing the contact area and reducing the contact resistance; at the same time, conductive paste blocks are set inside the branch tubes, which are punctured by the branch cables when inserted, achieving uniform coating and corrosion protection on the branch side interface, effectively preventing electrochemical corrosion in copper-aluminum connections, and the use of set screws and arc-shaped clamps ensures that the branch cables are stable and do not loosen. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein: Figure 1 A schematic diagram of the overall connection structure of the wire clamp is shown; Figure 2 A schematic diagram of the main bushing connection structure is shown; Figure 3 A schematic diagram of the location of the ring conductor is shown; Figure 4 A schematic diagram of the branch bushing connection structure is shown; Figure 5 A schematic diagram of the ring conductor connection structure is shown; Figure 6 A schematic diagram of the internal connection structure of the branch pipe is shown. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0020] Reference Figures 1-6This embodiment provides an adjustable multi-branch connector clamp, including a main sleeve 1 for accommodating the exposed conductor of the main cable, typically made of a highly conductive metal such as copper alloy or aluminum alloy, with an internal hollow cavity; at least two branch sleeves 2 movably fitted onto the outer wall of the main sleeve 1, each including a piercing element 21, the branch sleeves 2 being concentrically arranged with the main sleeve 1, and the branch sleeves 2 being freely rotatable around the axis of the main sleeve 1, thereby achieving arbitrary adjustment of the branch direction; a branch pipe 3 disposed on the outer wall of the branch sleeve 2, including a mounting hole 31 and a conductive paste block 32 disposed within the mounting hole 31; and an annular conductor 4 disposed between the main sleeve 1 and the branch sleeves 2; both the conductive paste block 32 and the annular conductor 4 are made of... Made of electrical composite grease, it can fill the microscopic unevenness of the contact surface, increase the effective contact area, form an oily protective film, prevent oxygen and moisture from entering, and prevent electrochemical corrosion. Especially when copper and aluminum are connected, it can maintain a stable resistance value for a long time without increasing over time. When the main cable conductor is inserted into the main bushing 1, the piercing part 21 penetrates the branch bushing 2 and pierces the annular conductor 4. The annular conductor 4 flows into the inner cavity of the main bushing 1 through the through hole, filling the gap between the main cable conductor and the inner wall of the main bushing 1. When the branch cable conductor is inserted into the mounting hole 31, one end of the branch cable can pierce the conductive paste block 32, which can fill the gap between the branch cable conductor and the inner wall of the branch pipe 3.

[0021] In one embodiment provided in this application, a plurality of through holes 11 are distributed in a circumferential array on the outer wall of the main sleeve 1. On the outer circumferential surface of the main sleeve 1, a plurality of through holes 11 are uniformly arranged along the circumferential direction to form multi-angle positioning points. After the branch sleeve 2 is rotated to the desired branch direction, the through hole 11 aligned with it is selected, and the piercing member 21 is screwed into the outer wall of the branch sleeve 2, passing through the wall of the branch sleeve 2 in sequence, piercing the annular conductor 4 in the middle, and finally extending into the corresponding through hole 11. The end of the piercing member 21 does not extend into the inner cavity center area of ​​the main sleeve 1, so as not to damage the conductor inside the main sleeve 1.

[0022] In one embodiment provided in this application, an arc-shaped plate 33 is provided inside the branch pipe 3 to fit the outer circumferential surface of the branch cable and achieve surface contact clamping; a set screw 34 is movably provided on the outer wall of the branch pipe 3, and the set screw 34 is threaded into the threaded hole on the outer wall of the branch pipe 3. One end of the set screw 34 passes through the wall of the branch pipe 3 and extends into the inner cavity of the branch pipe, and is movably connected to the arc-shaped plate 33. The set screw 34 and the arc-shaped plate 33 can be connected by a bearing or a ball joint structure. When the set screw 34 is rotated, the axial thrust is transmitted to the arc-shaped plate 33, so that it moves smoothly inward to clamp the branch cable; while the rotational motion of the set screw 34 itself is isolated by the bearing or ball joint structure and will not be transmitted to the arc-shaped plate 33, thereby preventing the arc-shaped plate 33 from rotating with the set screw 34.

[0023] In one embodiment provided in this application, the branch sleeve 2 includes a first clamping plate 22 disposed at one end of the branch pipe 3. One end of the branch pipe 3 is fixedly connected to the first clamping plate 22. A second clamping plate 23 is movably disposed on the outer wall of the side of the first clamping plate 22 away from the branch pipe 3. After the first clamping plate 22 and the second clamping plate 23 are engaged, they together wrap around the outer wall of the main sleeve 1.

[0024] In one embodiment provided in this application, a first positioning post 221 is fixedly provided on the outer wall of the first clamping plate 22, and a first positioning hole 231 is provided on the outer wall of the second clamping plate 23. The first positioning post 221 and the first positioning hole 231 are movably engaged. When the first clamping plate 22 and the second clamping plate 23 close to the outer wall of the main sleeve 1, the first positioning post 221 is inserted into the first positioning hole 231, which plays a guiding and anti-misalignment role, avoiding the branch pipe 3 from shifting angle or not being clamped tightly due to misalignment. At the same time, it ensures that the branch sleeve 2 can rotate freely around the main sleeve 1 to adjust the direction before it is locked.

[0025] In one embodiment provided in this application, the first clamping plate 22 and the second clamping plate 23 are connected by a detachable fastener 24. The detachable fastener 24 can be one of a pin and cotter pin, a spring clip, a lever lock, or a combination of bolts and nuts. In this embodiment, bolts and nuts are preferred, which are used to firmly lock the first clamping plate 22 and the second clamping plate 23 after they are engaged, thereby stably fitting the branch sleeve 2 onto the outer periphery of the main sleeve 1.

[0026] In one embodiment provided in this application, the main sleeve 1 includes a first buckle 12 disposed in the branch sleeve 2, and a second buckle 13 is movably disposed on the outer wall of the first buckle 12. Both the first buckle 12 and the second buckle 13 are semi-tubular shells, which are joined together to form a complete cylindrical cavity for accommodating the main cable conductor.

[0027] In one embodiment provided in this application, a second positioning post 121 is fixedly provided on the outer wall of the first buckle tube 12, and a second positioning hole 131 is provided on the outer wall of the second buckle tube 13. The second positioning post 121 and the second positioning hole 131 are movably engaged. When the first buckle tube 12 and the second buckle tube 13 are closed to cover the conductor of the main cable, the second positioning post 121 is inserted into the second positioning hole 131, which plays a guiding, anti-misinstallation and limiting role, ensuring that the inner cavity of the main sleeve 1 forms a complete and coaxial conductor accommodating space.

[0028] In one embodiment provided in this application, a heat-conducting plate 25 is provided on the outer wall of the branch sleeve 2, and heat-conducting fins 251 are provided on the outer wall of the heat-conducting plate 25. The heat-conducting plate 25 is closely attached to the outer wall of the branch sleeve 2 and is made of a high thermal conductivity metal such as aluminum or copper alloy, which can quickly absorb and conduct heat at the connection of the internal conductors. The heat-conducting fins 251 extend vertically on the outer surface of the heat-conducting plate 25 in an array, which significantly increases the heat dissipation area and can accelerate the dissipation of heat into the surrounding air through natural convection or forced air cooling.

[0029] In one embodiment provided in this application, the piercing element 21 is any one of a screw, bolt or pin, and its function is to penetrate the branch sleeve 2 and pierce the annular conductor 4 located between the main sleeve 1 and the branch sleeve 2. The through hole is set as a threaded hole. The screw and bolt provide controllable axial force by being screwed in through the thread, which is convenient for on-site installation and adjustment, while the pin is suitable for one-time crimping scenarios that do not require disassembly.

[0030] In use, firstly, strip a section of the insulation sheath of the main cable to expose the bare conductor, and place it in the inner cavity of the main sleeve 1, which is formed by the first clamping tube 12 and the second clamping tube 13. Then, place at least two branch sleeves 2 on the outer wall of the main sleeve 1 in sequence, and rotate them to the required branch direction according to the on-site wiring requirements. Each branch sleeve 2 covers the main sleeve 1 by the first clamping plate 22 and the second clamping plate 23, and after the first positioning post 221 is aligned with the first positioning hole 231, it is locked with the detachable fastener 24 to prevent loosening. Subsequently, the piercing component 21, like a screw, is screwed into the side wall of the branch sleeve 2, penetrating the wall of the branch sleeve 2 and piercing the annular conductor 4 located between the main sleeve 1 and the branch sleeve 2. It is then screwed further into the corresponding through hole 11 on the outer wall of the main sleeve 1. During this process, the electrical composite grease inside the annular conductor 4 is squeezed out and fills the space between the main cable conductor and the inner wall of the main sleeve 1, as well as the contact surface between the main and branch sleeves, through the through hole 11, significantly reducing contact resistance and forming an anti-corrosion protective film. Further, the end of the branch cable is stripped and inserted into the tapered mounting hole 31 of the branch pipe 3. The conductive paste block 32 at the bottom of the hole is automatically pierced, so that the conductive paste is applied between the branch cable and the inner wall of the branch pipe 3; then the set screw 34 is screwed on, pushing the arc plate 33 to move towards the center to clamp the branch cable. Since the set screw 34 and the arc plate 33 are connected by a bearing or ball joint, the arc plate 33 only moves horizontally and does not rotate when screwed on, ensuring stable clamping and uniform contact. If the clamp is working in a high-load environment, the heat-conducting plate 25 on the outer wall of the branch sleeve 2 can conduct heat at the connection to the heat-conducting fins 251, and dissipate heat through natural convection, effectively suppressing the temperature rise and ensuring long-term safe and reliable operation.

[0031] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. An adjustable multi-branch connector clamp, characterized in that: include, Main bushing (1); At least two branch sleeves (2) are movable and fitted on the outer wall of the main sleeve (1), including a puncture element (21). The branch pipe (3) located on the outer wall of the branch sleeve (2) includes a mounting hole (31) and a conductive paste block (32) located in the mounting hole (31). An annular conductor (4) is provided between the main bushing (1) and the branch bushing (2). When the main cable conductor is inserted into the main sleeve (1), the piercing piece (21) penetrates the branch sleeve (2) and pierces the annular conductor (4). When the branch cable conductor is inserted into the mounting hole (31), one end of the branch cable can pierce the conductive paste block (32).

2. The adjustable multi-branch connector clamp according to claim 1, characterized in that: The outer wall of the main sleeve (1) has a plurality of through holes (11) arranged in a circumferential array. The piercing element (21) can penetrate the branch sleeve (2) and extend into the corresponding through hole (11).

3. The adjustable multi-branch connector clamp according to claim 2, characterized in that: The branch pipe (3) is provided with an arc plate (33) inside, and the outer wall of the branch pipe (3) is provided with a set screw (34).

4. The adjustable multi-branch connector clamp according to claim 1, characterized in that: The branch sleeve (2) includes a first clamping plate (22) located at one end of the branch pipe (3), and a second clamping plate (23) is movably provided on the outer wall of the first clamping plate (22).

5. The adjustable multi-branch connector clamp according to claim 4, characterized in that: The outer wall of the first card plate (22) is provided with a first positioning post (221), and the outer wall of the second card plate (23) is provided with a first positioning hole (231). The first positioning post (221) and the first positioning hole (231) are movably engaged.

6. The adjustable multi-branch connector clamp according to claim 4 or 5, characterized in that: The first card plate (22) and the second card plate (23) are connected by a detachable fastener (24).

7. The adjustable multi-branch connector clamp according to claim 1, characterized in that: The main sleeve (1) includes a first buckle (12) disposed inside the branch sleeve (2), and a second buckle (13) is movably disposed on the outer wall of the first buckle (12).

8. The adjustable multi-branch connector clamp according to claim 7, characterized in that: The outer wall of the first buckle tube (12) is provided with a second positioning post (121), and the outer wall of the second buckle tube (13) is provided with a second positioning hole (131). The second positioning post (121) and the second positioning hole (131) are in movable cooperation.

9. The adjustable multi-branch connector clamp according to claim 1 or 7, characterized in that: The outer wall of the branch sleeve (2) is provided with a heat-conducting plate (25), and the outer wall of the heat-conducting plate (25) is provided with heat-conducting fins (251).

10. The adjustable multi-branch connector clamp according to claim 1, characterized in that: The puncturing element (21) is any one of a screw, bolt or pin.

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