An overhead line cross arm quick replacement clamp

Abstract

The application relates to the field of overhead line cross arms, and discloses a quick replacement clamp for an overhead line cross arm, which comprises a supporting rod and two limiting blocks, the surface of the supporting rod is movably provided with a cross arm frame, the bottom end of the cross arm frame is welded with two reinforcing frames, the two reinforcing frames are symmetrically distributed with the cross arm frame as the axis, the inner wall of the limiting block is threadedly connected with a first threaded rod, one end of the first threaded rod is fixedly provided with a rotating block, the surface of the rotating block is rotatably connected with a connecting frame, and the surface of the limiting block is slidably connected with the inner wall of the cross arm frame; the limiting block is installed in the cross arm frame, the inner wall of the limiting block is threadedly connected with the first threaded rod, one end of the first threaded rod is connected with the connecting frame through the rotating block, so that the rotating block is used for controlling the rotation of the first threaded rod, the limiting block is connected with the surface of the supporting rod, the cross arm frame is installed on the surface of the supporting rod, and the cross arm frame can be disassembled by rotating the rotating block to separate the limiting block from the supporting rod.

Description

Technical Field

[0001] This application relates to the field of overhead line crossarms, and in particular to a quick-change clamp for overhead line crossarms. Background Technology

[0002] Overhead lines are transmission lines that use insulators to fix the transmission conductors to poles and towers. They are mainly composed of conductors, poles and towers, insulators, crossarms, hardware, guy wires, and foundations. The conductors are mostly made of steel-cored aluminum stranded wire or hard copper stranded wire. Insulators support and fix the conductors. Poles and towers provide structural support and maintain a safe distance between conductors. Crossarms are commonly used in overhead lines to support the line. The crossarm is a horizontally fixed angle iron at the top of the pole, with porcelain insulators on it, used to support the overhead wires. The crossarm is an important component of the pole and tower; its function is to install insulators and hardware to support the conductors and lightning protection wires, and to maintain a certain safe distance between them as required. In conventional crossarm installation, after the support pole is fixed to the ground, the crossarm frame is installed on the surface of the support pole using clamps. Two reinforcing frames are installed at the bottom of the crossarm frame to support the bottom of the crossarm frame and improve its stability. The conductors are then fixed to the porcelain insulators on the surface of the crossarm frame.

[0003] Regarding the aforementioned technologies, the inventors believe that conventional crossbeams are prone to needing replacement after prolonged use due to the exhaustion of their service life or the influence of external forces. The conventional installation method for crossbeams uses bolts and clamps. Since bolts and other accessories are small and affected by the route after installation, it is easy for installation accessories to be difficult to install and remove or even fall off, making it inconvenient for workers to install and remove them.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] To address the inconvenience of installing and disassembling conventional crossarm clamps, this application provides a quick-change clamp for overhead line crossarms.

[0006] This application provides a quick-change clamp for crossarms of overhead lines, employing the following technical solution: A quick-change clamp for an overhead line crossarm includes a support rod and two limiting blocks. A crossarm frame is movably mounted on the surface of the support rod. Two reinforcing frames are welded to the bottom end of the crossarm frame, and the two reinforcing frames are symmetrically distributed about the crossarm frame. A first threaded rod is threadedly connected to the inner wall of each limiting block. A rotating block is fixedly mounted on one end of the first threaded rod. A connecting frame is rotatably connected to the surface of the rotating block. The surface of the limiting block is slidably connected to the inner wall of the crossarm frame. The two limiting blocks are symmetrically distributed about the support rod. The center of the rotating block and the center of the first threaded rod are on the same straight line. The surface of the connecting frame is fixedly mounted to the inner wall of the crossarm frame.

[0007] Preferably, both ends of the limiting block are fixedly connected to sliders, the two sliders are symmetrically distributed about the limiting block, and the cross-section of the sliders is a "T" shaped structure. The inner wall of the cross stretcher is provided with a connecting groove that matches the slider, and the inner wall of the connecting groove is slidably installed with the surface of the slider.

[0008] Preferably, an auxiliary piece is fixedly connected to one end of the limiting block. The auxiliary piece is a rubber sheet, and the end of the auxiliary piece away from the limiting block is movably installed on the surface of the support rod.

[0009] Preferably, a sliding rod is slidably connected to the inner wall of the limiting block, one end of the sliding rod is fixedly installed to the surface of the connecting frame, and a push spring is movably connected to the surface of the sliding rod. The two ends of the push spring are respectively fixedly installed to the limiting block and one end of the connecting frame, and the center of the push spring and the center of the sliding rod are on the same straight line.

[0010] Preferably, a second threaded rod is fixedly connected to the top of the support rod, and a groove is provided on the inner wall of the second threaded rod. Two limiting frames are slidably installed on the inner wall of the groove, and the bottom end of the limiting frame is fixedly connected to the top of the limiting block.

[0011] Preferably, a retaining ring is threaded onto the surface of the second threaded rod, the center of the retaining ring is on the same straight line as the center of the second threaded rod, and the bottom end of the retaining ring is movably connected to the top of the limiting frame.

[0012] Preferably, a cover is fixedly installed on the top of the crossbeam, and the dimensions of the bottom of the cover are compatible with the dimensions of the top of the crossbeam.

[0013] In summary, this application includes the following beneficial technical effects: 1. By installing a limiting block inside the crossbar, a first threaded rod is threadedly connected to the inner wall of the limiting block. One end of the first threaded rod is connected to a connecting frame via a rotating block, allowing the rotating block to control the rotation of the first threaded rod and control the connection between the limiting block and the support rod surface. The crossbar is then installed on the support rod surface, and the crossbar can be disassembled by rotating the rotating block to separate the limiting block from the support rod. Both ends of the limiting block are equipped with sliders, the surfaces of which are slidably connected to the connecting grooves on the inner wall of the crossbar, allowing the crossbar to be connected to the limiting block via the sliders and the connecting grooves. One end of the limiting block is equipped with a rubber auxiliary piece to ensure the stability of the crossbar installation. Two sliding rods are slidably connected to the inner wall of the limiting block, and push springs are installed on the surfaces of the sliding rods to keep one end of the limiting block connected to the support rod surface via the push springs. Compared with existing technologies, this significantly improves the convenience of crossbar installation and disassembly. 2. A second threaded rod can also be installed on the top of the support rod. A limit frame is engaged in the slot at the top of the second threaded rod to prevent angular displacement of the crossbeam after installation. A fixing ring is threaded onto the surface of the second threaded rod to connect with the second threaded rod and fix the top of the limit frame. A cover is installed on the top of the crossbeam to cover the top of the crossbeam, effectively improving the performance of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a quick-change clamp for an overhead line crossarm according to an embodiment of the application. Figure 2 This is a schematic diagram of the limiting block structure in an embodiment of the application; Figure 3 This is a side view of the embodiment of the application. Figure 4 This is a schematic diagram of the structure at point A in the embodiment of the application.

[0015] Explanation of reference numerals in the attached drawings: 1. Support rod; 2. Horizontal support frame; 3. Reinforcing frame; 4. Limiting block; 5. First threaded rod; 6. Rotating block; 7. Connecting frame; 8. Sliding block; 9. Connecting groove; 10. Sliding rod; 11. Auxiliary piece; 12. Push spring; 13. Slot; 14. Limiting frame; 15. Second threaded rod; 16. Fixing ring; 17. Cover. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0017] This application discloses a quick-change clamp for crossarms of overhead lines, referring to... Figure 1 - Figure 2The system includes a support rod 1. During use, after fixing the support rod 1 to the ground, the cross stretcher 2 is installed on the surface of the support rod 1 using clamps. Two reinforcing brackets 3 are installed at the bottom of the cross stretcher 2 to support the bottom and improve its stability. The wires are fixed to the porcelain insulators on the surface of the cross stretcher 2. A limiting block 4 is installed inside the cross stretcher 2. A first threaded rod 5 is threaded to the inner wall of the limiting block 4. A rotating block 6 is installed at one end of the first threaded rod 5. A connecting bracket 7 is rotatably connected to the surface of the rotating block 6. The surface of the connecting bracket 7 is installed against the inner wall of the cross stretcher 2. By controlling the rotation of the first threaded rod 5 with the rotating block 6, the limiting block 4 slides within the cross stretcher 2, thereby connecting one end of the limiting block 4 to the surface of the support rod 1 and installing the cross stretcher 2 on the surface of the support rod 1. The cross stretcher 2 can be disassembled by rotating the rotating block 6 to separate the limiting block 4 from the support rod 1, effectively improving the convenience of installing and disassembling the cross stretcher 2.

[0018] Reference Figure 2 Both ends of the limiting block 4 are equipped with sliders 8. The surface of the sliders 8 is slidably connected to the connecting groove 9 on the inner wall of the crossbeam 2. The crossbeam 2 and the limiting block 4 are connected by the sliders 8 and the connecting groove 9, thereby improving the stability of the limiting block 4 when sliding. One end of the limiting block 4 is equipped with a rubber auxiliary piece 11. One end of the auxiliary piece 11 is movably connected to the surface of the support rod 1. The auxiliary piece 11 increases the friction between the limiting block 4 and the surface of the support rod 1, thereby ensuring the stability of the crossbeam 2 installation. Two sliding rods 10 are slidably connected to the inner wall of the limiting block 4. The surface of the sliding rods 10 is fixedly connected to the surface of the connecting frame 7. A push spring 12 is installed on the surface of the sliding rods 10. The push spring 12 pushes one end of the limiting block 4, keeping one end of the limiting block 4 connected to the surface of the support rod 1, thereby improving the fixing effect of the first threaded rod 5 and preventing the limiting block 4 from shifting due to the loosening of the first threaded rod 5.

[0019] Reference Figure 3 - Figure 4 A second threaded rod 15 is installed on the top of the support rod 1. A slot 13 is provided on the top of the second threaded rod 15. A limit frame 14 is engaged with the inner wall of the slot 13. The bottom end of the limit frame 14 is connected to the top of the limit block 4. By engaging the limit frame 14 with the slot 13, the angle of the crossbeam 2 on the surface of the limit block 4 is limited, preventing the crossbeam 2 from shifting after installation. A fixing ring 16 is threadedly connected to the surface of the second threaded rod 15. The bottom end of the fixing ring 16 is connected to the top of the limit block 4. By connecting the fixing ring 16 with the second threaded rod 15, the top of the limit frame 14 is fixed, thereby improving the stability of the crossbeam 2 after installation. A cover 17 is installed on the top of the crossbeam 2 to cover the top of the crossbeam 2 and prevent external rainwater from corroding the surface of the push spring 12.

[0020] The implementation principle of a quick-change clamp for an overhead line crossarm according to an embodiment of this application is as follows: A limiting block 4 is installed inside the crossarm 2. A first threaded rod 5 is threadedly connected to the inner wall of the limiting block 4. A rotating block 6 is installed at one end of the first threaded rod 5. A connecting frame 7 is rotatably connected to the surface of the rotating block 6. The surface of the connecting frame 7 is installed against the inner wall of the crossarm 2, so that the first threaded rod 5 can be rotated by means of the rotating block 6, thereby controlling the limiting block 4 to slide within the crossarm 2. This connects one end of the limiting block 4 to the surface of the support rod 1, allowing the crossarm 2 to be installed on the surface of the support rod 1. Rotating the rotating block 6 separates the limiting block 4 from the support rod 1, thus disassembling the crossarm 2. Slider blocks 8 are installed at both ends of the limiting block 4. The surface of the slider 8 is slidably connected to the connecting groove 9 on the inner wall of the crossarm 2, so that the slider 8 can be used to... The connecting groove 9 connects the crossbeam 2 to the limiting block 4, thereby improving the stability of the limiting block 4 during sliding. One end of the limiting block 4 is equipped with a rubber auxiliary piece 11, and one end of the auxiliary piece 11 is movably connected to the surface of the support rod 1, so as to increase the friction between the limiting block 4 and the surface of the support rod 1 with the help of the auxiliary piece 11, thereby ensuring the stability of the crossbeam 2 installation. Two sliding rods 10 are slidably connected to the inner wall of the limiting block 4. The surface of the sliding rod 10 is fixedly connected to the surface of the connecting frame 7. A push spring 12 is installed on the surface of the sliding rod 10, so as to push one end of the limiting block 4 with the help of the push spring 12, keeping one end of the limiting block 4 connected to the surface of the support rod 1, thereby improving the fixing effect of the first threaded rod 5 and preventing the limiting block 4 from shifting due to the loosening of the first threaded rod 5.

[0021] A second threaded rod 15 can also be installed on the top of the support rod 1. The top of the second threaded rod 15 has a slot 13. The inner wall of the slot 13 is engaged with a limit frame 14. The bottom end of the limit frame 14 is connected to the top of the limit block 4 so that the limit frame 14 and the slot 13 can be engaged to limit the angle of the crossbeam 2 on the surface of the limit block 4 and prevent the crossbeam 2 from shifting after installation. A fixing ring 16 is threadedly connected to the surface of the second threaded rod 15. The bottom end of the fixing ring 16 is connected to the top of the limit block 4 so that the fixing ring 16 and the second threaded rod 15 can be connected to fix the top of the limit frame 14, thereby improving the stability of the crossbeam 2 after installation. A cover 17 is installed on the top of the crossbeam 2 so that the top of the crossbeam 2 can be covered to prevent external rainwater from corroding the surface of the push spring 12.

[0022] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick-change clamp for an overhead line crossarm, comprising a support rod (1) and two limiting blocks (4), characterized in that: A crossbeam (2) is movably mounted on the surface of the support rod (1). Two reinforcing frames (3) are welded to the bottom end of the crossbeam (2). The two reinforcing frames (3) are symmetrically distributed about the crossbeam (2). A first threaded rod (5) is threadedly connected to the inner wall of the limiting block (4). A rotating block (6) is fixedly mounted on one end of the first threaded rod (5). A connecting frame (7) is rotatably connected to the surface of the rotating block (6).

2. The overhead line crossarm quick-change clamp according to claim 1, characterized in that: The surface of the limiting block (4) is slidably connected to the inner wall of the crossbeam (2). The two limiting blocks (4) are symmetrically distributed about the support rod (1). The center of the rotating block (6) is on the same straight line as the center of the first threaded rod (5). The surface of the connecting frame (7) is fixedly installed to the inner wall of the crossbeam (2).

3. The overhead line crossarm quick-change clamp according to claim 1, characterized in that: Both ends of the limiting block (4) are fixedly connected to sliders (8). The two sliders (8) are symmetrically distributed about the limiting block (4), and the cross section of the slider (8) is a "T" shaped structure. The inner wall of the cross support (2) is provided with a connecting groove (9) that is compatible with the slider (8). The inner wall of the connecting groove (9) is slidably installed on the surface of the slider (8).

4. The overhead line crossarm quick-change clamp according to claim 1, characterized in that: An auxiliary piece (11) is fixedly connected to one end of the limiting block (4). The auxiliary piece (11) is a rubber sheet, and the end of the auxiliary piece (11) away from the limiting block (4) is movably installed on the surface of the support rod (1).

5. A quick-change clamp for overhead line crossarms according to claim 1, characterized in that: The inner wall of the limiting block (4) is slidably connected to a sliding rod (10). One end of the sliding rod (10) is fixedly installed on the surface of the connecting frame (7). A push spring (12) is movably connected to the surface of the sliding rod (10). The two ends of the push spring (12) are fixedly installed on one end of the limiting block (4) and the connecting frame (7), respectively. The center of the push spring (12) and the center of the sliding rod (10) are on the same straight line.

6. The overhead line crossarm quick-change clamp according to claim 1, characterized in that: The top of the support rod (1) is fixedly connected to a second threaded rod (15), and the inner wall of the second threaded rod (15) is provided with a slot (13). Two limit frames (14) are slidably installed on the inner wall of the slot (13), and the bottom end of the limit frame (14) is fixedly connected to the top of the limit block (4).

7. A quick-change clamp for overhead line crossarms according to claim 6, characterized in that: The second threaded rod (15) has a fixing ring (16) threaded on its surface. The center of the fixing ring (16) is on the same straight line as the center of the second threaded rod (15), and the bottom end of the fixing ring (16) is movably connected to the top of the limiting frame (14).

8. A quick-change clamp for overhead line crossarms according to claim 1, characterized in that: A cover (17) is fixedly installed on the top of the crossbeam (2), and the size of the bottom of the cover (17) is compatible with the size of the top of the crossbeam (2).

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