Overhead line connecting wire clamp
By designing the coordination of the U-shaped seat, U-shaped cover and adjusting parts, the existing clamp self-locking function and poor overcurrent capability are solved, and the stable clamping and efficient installation of the cable are achieved, reducing maintenance costs.
Patent Information
- Application Number
- CN202510262865.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-07-04
AI Technical Summary
The existing low-voltage overhead line connection clamps have problems such as insufficient self-locking function, difficulty in installation, poor overcurrent capability, and difficult selection of wire outer diameter, resulting in high maintenance costs and poor contact.
A overhead line connection clamp is designed, including a U-shaped seat, a U-shaped cover, an adjusting member and a moving clamp. Through the coordination of the limiting groove, a limiting slide and an adjustment screw, the stable clamp of the cable is achieved, and the initial compression force is provided by a spring to ensure the stable connection between the U-shaped cover and the U-shaped seat.
It realizes stable clamping of the cable, simple structure, easy installation, large contact area, strong overcurrent capacity, good cable fixing effect, and reduces maintenance costs.
Smart Images
Figure CN120262047A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of connection wire clamps, and particularly relates to an overhead line connection wire clamp. Background Art
[0002] With the continuous and rapid development of the national economy, the application of electric power is becoming increasingly widespread. How to ensure the normal and reliable operation of the power supply system has become one of the key concerns of power supply companies. Nowadays, with the continuous development of industrial and agricultural production and the continuous improvement of people's living standards, the power consumption is increasing day by day.
[0003] At present, the connection or jumper between insulated wires and bare wires of low-voltage overhead lines mainly adopts methods such as parallel groove clamps, piercing clamps, and C-type clamps.
[0004] However, there are still certain deficiencies in the use of various types of wire clamps: The parallel groove clamp has no self-locking function. After several years of use, the screws will loosen and need to be tightened again to meet the use requirements, resulting in relatively high later maintenance costs; The piercing clamp is simple in construction, but it is difficult to judge whether the cable is single or double plastic from the appearance during the installation process, resulting in the conductor being stabbed during the penetration process of the single plastic cable and insufficient piercing of the double plastic cable. The contact surface of the needle-type contact method is small and the current-carrying capacity is poor; The C-type clamp has good current-carrying capacity, but has strict requirements for the outer diameter of the wire, making it difficult to select the type. If the outer diameter of the wire is too large, the wire clamp and the wire cannot be flattened and self-locking cannot be achieved. If the outer diameter of the wire is too small, the wire cannot be tightly clamped, and the wire clamp is likely to loosen and cause poor contact during use.
[0005] Therefore, we propose an overhead line connection wire clamp to solve the above problems. Summary of the Invention
[0006] Aiming at the problems still existing in the use of various types of wire clamps, the invention provides an overhead line connection wire clamp.
[0007] The solution adopted by the invention to solve its technical problems is: an overhead line connection wire clamp, including a U-shaped seat, a U-shaped cover, two adjusting members, and two moving clamp blocks. Limit grooves are respectively opened at the two top ends of the U-shaped seat, and a double-groove clip is fixedly installed therein. The double-groove clip has two arc-shaped grooves for placing cable conductors. Limit sliders are respectively fixedly connected to the two bottom ends of the U-shaped cover. The limit sliders can slide along the limit grooves, so that the U-shaped cover is buckled on the top of the U-shaped seat. Two moving clamp blocks are arranged in the U-shaped cover and respectively correspond to the two arc-shaped grooves. The adjusting member is installed on the top of the U-shaped cover, and its bottom end is connected to the corresponding moving clamp block for adjusting the height of the moving clamp block.
[0008] Preferably, the limiting slider is any one of a trapezoidal bar, a T-shaped bar, and a round rod, and the limiting groove is any one of a trapezoidal groove, a T-shaped groove, and a round groove.
[0009] Preferably, at least one guide rod is provided on the side surface of the movable clamping block. The bottom end of the guide rod is fixedly connected to the top of the double-groove clip, and a sliding sleeve is sleeved on the guide rod. The sliding sleeve is fixedly connected to the movable clamping block.
[0010] Preferably, two threaded holes are provided in the top of the U-shaped cover.
[0011] Preferably, the adjusting member is an adjusting screw rod arranged in the threaded hole. The bottom end of the adjusting screw rod passes through the threaded hole and contacts the top of the movable clamping block.
[0012] Preferably, a positioning sleeve is welded on the top of the movable clamping plate, and the bottom end of the adjusting screw rod is inserted into the positioning sleeve.
[0013] Preferably, a stop piece is fixedly connected to the top end of the guide rod, and a spring is sleeved on the guide rod. The two ends of the spring are respectively fixedly connected to the stop piece and the sliding sleeve.
[0014] Preferably, an insulating layer is provided on the outer surface of the U-shaped seat, and an insulating layer is provided on the outer surface of the U-shaped cover.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, the cable is placed between the double-groove clip and the movable clamping block, and the U-shaped cover is connected to the U-shaped seat. By rotating the adjusting screw rod, the lower end of the adjusting screw rod presses against the movable clamping block, and then the movable clamping block presses down the cable to clamp and fix the cable. At the same time, the U-shaped cover and the U-shaped seat are not easily separated, so as to ensure that the connecting wire clamp has a stable clamping force on the cable conductor. The connecting wire clamp has a simple structure, is convenient to install, has a large contact area with the cable conductor, good current-carrying capacity, and good cable fixing effect.
[0016] 2. In the present invention, by providing a spring on the guide rod, under the action of the spring, the movable clamping block automatically moves downward to preliminarily press and fix the cable conductor, so as to facilitate the connection between the U-shaped cover and the U-shaped seat.
[0017] 3. After the U-shaped cover and the U-shaped seat are connected in the present invention, under the cooperation of the limiting groove and the limiting slider, the U-shaped cover can only move back and forth. When the bottom end of the adjusting screw rod extends into the positioning sleeve to press down the movable clamping block, the U-shaped cover and the U-shaped seat are stably connected, and the U-shaped cover and the U-shaped seat will not separate. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a right-view sectional three-dimensional structural schematic diagram of the present invention; Figure 3This is a schematic diagram of the three-dimensional structure of the present invention without a U-shaped cover.
[0019] In the figure: 1 U-shaped seat, 2 U-shaped cover, 3 double-groove clip, 4 moving clip block, 51 guide rod, 52 sliding sleeve, 53 spring, 54 retaining piece, 61 adjusting screw rod, 62 positioning sleeve, 71 limiting groove, 72 limiting slider. Specific embodiments
[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0021] Please refer to Figures 1-3 , the present invention provides a technical solution for an overhead line connecting clamp: Embodiment 1: According to Figures 1-3 as shown, it includes a U-shaped seat 1, a U-shaped cover 2, two adjusting members and two moving clip blocks 4, Limiting grooves 71 are respectively opened at both top ends of the U-shaped seat 1. The limiting groove 71 is any one of a trapezoidal groove, a T-shaped groove, and a circular groove. A double-groove clip 3 is fixedly installed inside the U-shaped seat 1. The double-groove clip 3 has two arc-shaped grooves for placing cable conductors.
[0022] Two threaded holes are opened at the top of the U-shaped cover 2. Limiting sliders 72 are respectively fixedly connected to both bottom ends of the U-shaped cover 2. The limiting slider 72 is any one of a trapezoidal strip, a T-shaped strip, and a round rod. The limiting slider 72 can slide along the limiting groove 71, so that the U-shaped cover 2 is buckled on the top of the U-shaped seat 1 and will not be separated up and down.
[0023] Two moving clip blocks 4 are arranged inside the U-shaped cover 2 and respectively correspond to the two arc-shaped grooves. At least one guide rod 51 is arranged on the side of the moving clip block 4. In this embodiment, the number of guide rods 51 is two. The bottom end of the guide rod 51 is fixedly connected to the top of the double-groove clip 3. A sliding sleeve 52 is sleeved on the guide rod 51. The sliding sleeve 52 is fixedly connected to the moving clip block 4. By arranging the guide rod 51 and the sliding sleeve 52, the moving clip block 4 can move up and down smoothly.
[0024] The adjusting member is an adjusting screw rod 61 arranged in the threaded hole. The bottom end of the adjusting screw rod 61 passes through the threaded hole and contacts the top of the moving clip block 4. By rotating the adjusting screw rod 61, the lower end of the adjusting screw rod 61 presses against the moving clip block 4 to adjust the height of the moving clip block 4, so that the moving clip block 4 presses down on the cable to clamp and fix the cable.
[0025] A positioning sleeve 62 is welded on the top of the moving clip plate. When the bottom end of the adjusting screw rod 61 extends into the positioning sleeve 62 to press down on the moving clip block 4, the U-shaped cover 2 and the U-shaped seat 1 are stably connected, so that the U-shaped cover 2 and the U-shaped seat 1 will not be separated, so as to ensure that the connecting clamp has a stable clamping force on the cable conductor.
[0026] The connecting wire clamp is made of metal materials, with simple structure, convenient installation, large contact area with the cable conductor, good over-current capacity, and good cable fixing effect.
[0027] When in specific use, for a connecting wire clamp for overhead lines of the present invention, first, the conductors of two cables are successively placed between the double-groove clip 3 and the moving clamp block 4, then the U-shaped cover 2 is connected to the U-shaped seat 1, and finally, the adjusting screw 61 is rotated one by one. The bottom end of the adjusting screw 61 extends into the positioning sleeve 62 to press down the moving clamp block 4, so that the moving clamp block 4 presses down the cable to clamp and fix the cable. At the same time, the U-shaped cover 2 and the U-shaped seat 1 will not separate, and the installation of the connecting wire clamp is completed.
[0028] Embodiment 2: Based on Embodiment 1, the differences are as follows. As Figure 2 and Figure 3 shown, a retaining piece 54 is fixedly connected to the top end of the guide rod 51, and a spring 53 is sleeved on the guide rod 51. The two ends of the spring 53 are respectively fixedly connected to the retaining piece 54 and the sliding sleeve 52. Under the action of the spring 53, the moving clamp block 4 automatically moves downward to preliminarily press and fix the cable conductor, so as to facilitate the connection of the U-shaped cover 2 and the U-shaped seat 1.
[0029] Embodiment 3: Based on Embodiment 1, the differences are as follows. An insulating layer is provided on the outer surface of the U-shaped seat 1, and an insulating layer is provided on the outer surface of the U-shaped cover 2.
Claims
1. An overhead line connection clamp, characterized in that: It includes a U-shaped seat, a U-shaped cover, two adjusting members and two moving clamping blocks. Limit grooves are respectively formed at two top ends of the U-shaped seat, and a double-groove clip is fixedly installed therein. The double-groove clip has two arc-shaped grooves for placing cable conductors. Limit sliders are respectively fixedly connected to two bottom ends of the U-shaped cover. The limit sliders can slide along the limit grooves, so that the U-shaped cover is buckled on the top of the U-shaped seat. The two moving clamping blocks are arranged in the U-shaped cover and respectively correspond to the two arc-shaped grooves. The adjusting member is installed on the top of the U-shaped cover, and its bottom end is connected to the corresponding moving clamping block for adjusting the height of the moving clamping block.
2. The overhead line connection clamp according to claim 1, characterized in that: The limit slider is any one of a trapezoidal bar, a T-shaped bar and a round rod, and the limit groove is any one of a trapezoidal groove, a T-shaped groove and a round groove.
3. The overhead line connection clamp according to claim 1, characterized in that: At least one guide rod is arranged on the side surface of the moving clamping block. The bottom end of the guide rod is fixedly connected to the top of the double-groove clip, and a sliding sleeve is sleeved on the guide rod. The sliding sleeve is fixedly connected to the moving clamping block.
4. The overhead line connection clamp according to claim 3, characterized in that: Two threaded holes are formed in the top of the U-shaped cover.
5. The overhead line connection clamp according to claim 4, characterized in that: The adjusting member is an adjusting screw arranged in the threaded hole. The bottom end of the adjusting screw passes through the threaded hole and contacts the top of the moving clamping block.
6. The overhead line connection clamp according to claim 5, characterized in that: A positioning sleeve is welded on the top of the moving clamping plate, and the bottom end of the adjusting screw is inserted into the positioning sleeve.
7. The overhead line connection clamp according to claim 3 or 5, characterized in that: A stop piece is fixedly connected to the top end of the guide rod, and a spring is sleeved on the guide rod. Two ends of the spring are respectively fixedly connected to the stop piece and the sliding sleeve.
8. The overhead line connection clamp according to claim 1, characterized in that: An insulating layer is arranged on the outer surface of the U-shaped seat, and an insulating layer is arranged on the outer surface of the U-shaped cover.