A live-line crossing device for ultra-high voltage transmission line construction

Abstract

This utility model discloses a live-line crossing device for ultra-high voltage transmission line construction, comprising: a crossing device body, a multi-stage telescopic arm fixedly connected to the inner side of the crossing device body, a base fixedly connected to the output end of the multi-stage telescopic arm, a motor fixedly connected to the inner wall of the base, and a lead screw fixedly connected to the output end of the motor. The lifting and lowering of the support frame can be controlled by the multi-stage telescopic arm, and the movement of the support frame can be controlled by the motor drive, so that the live cable is located below the support frame. The cable to be crossed is pulled across from the inner roller of the support frame, avoiding friction between the cable and the live cable during the crossing process. The extension and retraction of the hydraulic rod can make the first support leg abut against the ground, and the rotation of the second lead screw can make the second support leg abut against the ground. The multiple support legs form a stable support system, which helps the overall structure maintain stability during construction, prevents tilting or movement, and ensures operational safety.

Description

Technical Field

[0001] This utility model relates to the field of crossing device technology, and in particular to a live crossing device for ultra-high voltage transmission line construction. Background Technology

[0002] During the construction of ultra-high voltage transmission lines, live-line crossing operations are often required, which involve crossing already energized cables. However, the support structure of traditional equipment lacks flexible adjustment capabilities; it is generally an elevated structure made of multiple iron pipes. These support frames are mostly fixed, allowing only height adjustment and lacking precise horizontal movement control. This makes it impossible to maintain a safe distance between the cable to be crossed and the energized cable below. When pulling the cable to be crossed, due to the fixed position or inflexible adjustment of the support frame, the energized cable is usually located outside the crossing device and support structure. The support frame can only support the cable by its height, and the cable to be crossed is prone to sagging under stress, causing friction with the energized cable. This can damage the cable insulation and lead to safety accidents. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a live crossing device for the construction of ultra-high voltage transmission lines, which solves the problem that the cable to be crossed is prone to contact with the live cable due to sagging or other reasons.

[0004] This utility model also provides a live-line crossing device for ultra-high voltage transmission line construction, comprising: a crossing device body, a multi-stage telescopic arm fixedly connected to the inner side of the crossing device body, a base fixedly connected to the output end of the multi-stage telescopic arm, a motor fixedly connected to the inner wall of the base, a lead screw fixedly connected to the output end of the motor, a bearing frame threadedly connected to the outer surface of the lead screw, a roller rotatably connected to the inner wall of the bearing frame, a fixing plate fixedly connected to the outer surface of the crossing device body, a hydraulic rod hinged to the lower surface of the fixing plate, a support leg hinged to the output end of the hydraulic rod, a fixing frame fixedly connected to the outer surface of the support leg, a lead screw 2 rotatably connected to the inner side of the fixing frame, a support leg 2 threadedly connected to the outer surface of the lead screw 2, and a sliding connection between the outer surface of the support leg 2 and the support leg 1.

[0005] Preferably, a guide rod is fixedly connected to the inner wall of the base, and the outer surface of the guide rod is slidably connected to the support frame, thereby realizing the guiding function of the support frame, making the support frame more stable when moving laterally, and reducing shaking and deviation.

[0006] Preferably, a handle is fixedly connected to one end of the lead screw two. The handle is located on the outside of the fixed frame, which facilitates the rotational transmission of the lead screw two. This allows the lifting or adjustment of the support leg two to be manually operated, making it easier for the operator to adjust according to specific needs and improving the operability and flexibility of the device.

[0007] Preferably, the end of the lead screw away from the motor is rotatably connected to the base, and the end of the lead screw away from the handle is rotatably connected to the support leg, thereby realizing the rotational transmission of the lead screw and improving the operability of the device.

[0008] Preferably, the outer surface of the first support leg is rotatably connected to the main body of the crossing device. Multiple rollers are provided and evenly distributed on the support frame. The support legs are rotatably connected, allowing for flexible angle adjustment so that the equipment can adapt to the needs of different sites.

[0009] Preferably, an identification box is fixedly connected to the outer surface of the support frame, and an identification plate is placed inside the identification box. The design of the identification box and the identification plate facilitates the identification and differentiation of different equipment, which helps with on-site management and scheduling and improves work efficiency.

[0010] Preferably, there are two support legs, one and two support legs, located on both sides of the main body of the crossing device. The upper surface of the fixing plate is equipped with a warning light. The two support legs on each side enhance the stability and load-bearing capacity of the structure, ensuring the stability of the equipment under various construction conditions.

[0011] Preferably, the upper surface of the fixing plate is provided with a fitting groove, and the inner wall of the fitting groove abuts against the support frame, which helps to maintain the alignment and stability of the equipment parts.

[0012] Beneficial effects:

[0013] This technical solution for a live-line crossing device for UHV transmission line construction utilizes a multi-stage telescopic boom to control the lifting and lowering of the support frame. A motor drives the frame to move, positioning the live cable below it. The cable to be crossed is pulled across the inner rollers of the support frame, preventing friction between the cable and the live cable during the crossing process. The extension and retraction of hydraulic rods allows support leg one to contact the ground, and the rotation of screw two further engages support leg two. Multiple support legs form a stable support system, helping to maintain the overall structure's stability during construction, preventing tipping or movement, and ensuring operational safety. Each support leg is individually adjustable to suit different terrains. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is an overall structural diagram of a live-line crossing device for ultra-high voltage transmission line construction according to this utility model;

[0016] Figure 2 This is a schematic diagram of the support frame connection of a live-line crossing device for ultra-high voltage transmission line construction according to this utility model;

[0017] Figure 3 This is a schematic diagram of the fixing plate connection of a live crossing device for ultra-high voltage transmission line construction according to this utility model;

[0018] Figure 4 This is a schematic diagram of the base connection of a live crossing device for ultra-high voltage transmission line construction according to this utility model.

[0019] Legend:

[0020] 1. Main body of the crossing device; 2. Multi-stage telescopic arm; 3. Base; 4. Motor; 5. Lead screw one; 6. Bearing frame; 7. Roller; 8. Fixing plate; 9. Hydraulic rod; 10. Support leg one; 11. Fixing frame; 12. Lead screw two; 13. Support leg two; 14. Guide rod; 15. Identification box; 16. Warning light; 17. Fitting groove. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-4This utility model discloses a live-line crossing device for ultra-high voltage transmission line construction, comprising: a crossing device body 1, which allows crossing operations to be completed while the transmission line remains energized, without power interruption, ensuring continuous power supply; mainly composed of a movable frame, a support frame 6, and multi-stage telescopic arms 2; the device is placed on the energized cable line, ensuring stability with the support legs touching the ground; the device is stable overall; the height and position of the support frame 6 are adjusted using the multi-stage telescopic arms 2, pulling the cable to be crossed out from the inner roller 7; the multi-stage telescopic arms 2 are fixedly connected to the inner side of the crossing device body 1; the height of the support frame 6 can be adjusted according to construction needs to improve operational adaptability; mainly composed of multiple arm sections, a drive mechanism, and connecting devices; powered by an electric motor or hydraulic system, the power is transmitted to the arm sections through screws, hydraulic cylinders, etc.; each arm section can extend or retract individually or synchronously to achieve the expected height and length; the output end of the multi-stage telescopic arms 2 is fixedly connected to a base 3; the inner wall of the base 3 is fixedly connected to a motor 4; the output end of the motor 4 is fixedly connected to... A lead screw 5 is connected to the main body of the device, which converts rotary motion into linear motion. It mainly consists of a screw and a nut. When the lead screw rotates, the nut moves along the thread, generating linear motion. The lead screw 5 and lead screw 12 have identical structures. A support frame 6 is threaded onto the outer surface of lead screw 5, and a roller 7 is rotatably connected to the inner wall of the support frame 6. A fixed plate 8 is fixedly connected to the outer surface of the main body 1 of the device. A hydraulic rod 9 is hinged to the lower surface of the fixed plate 8. The hydraulic rod 9 converts liquid pressure into mechanical power through a hydraulic system, and it mainly consists of a hydraulic cylinder and a piston. The hydraulic cylinder is composed of a rod and piston, etc. Hydraulic oil is sent to one end of the hydraulic cylinder by an oil pump. The liquid applies pressure to the piston, and the hydraulic pressure acting on the piston generates an outward thrust. The movement of the piston causes the rod (piston rod) to extend or retract. The output end of the hydraulic rod 9 is hinged to a support leg 10. A fixing frame 11 is fixedly connected to the outer surface of the support leg 10. A lead screw 12 is rotatably connected to the inner side of the fixing frame 11. A support leg 13 is threadedly connected to the outer surface of the lead screw 12. The outer surface of the support leg 13 is slidably connected to the support leg 10.

[0023] A guide rod 14 is fixedly connected to the inner wall of the base 3. The outer surface of the guide rod 14 is slidably connected to the support frame 6. A handle is fixedly connected to one end of the second lead screw 12, which is located on the outside of the fixed frame 11. The end of the first lead screw 5 away from the motor 4 is rotatably connected to the base 3. The end of the second lead screw 12 away from the handle is rotatably connected to the first support leg 10. The outer surface of the first support leg 10 is rotatably connected to the main body 1 of the crossing device. Multiple rollers 7 are provided and evenly distributed on the support frame 6. An identification box 15 is fixedly connected to the outer surface of the support frame 6. An identification plate is placed inside the identification box 15. Two legs 10 and two support legs 13 are provided, located on both sides of the main body 1 of the crossing device. The upper surface of the fixing plate 8 is provided with a warning light 16, which is used to warn people around and prevent non-workers from approaching. It mainly consists of a light source, a power system and a control circuit. It is powered by the equipment power supply or an external power supply. The control circuit controls the on, off and flashing states of the light. The LED light or other light source emits light when it receives the control signal to achieve a visual warning effect. The upper surface of the fixing plate 8 is provided with a fitting groove 17, and the inner wall of the fitting groove 17 abuts against the support frame 6.

[0024] Specifically, the lifting and lowering of the support frame 6 can be controlled by the multi-stage telescopic arm 2. The motor 4 rotates the lead screw 5, causing the support frame 6, which is threadedly connected to the lead screw 5, to move. This positions the live cable below the support frame 6, and the cable to be crossed is then pulled across from the inner roller 7 of the support frame 6, preventing friction between the cable and the live cable during the crossing process. The extension and retraction of the hydraulic rod 9 allows the support leg 10 to contact the ground. Then, by turning the handle, the lead screw 12 rotates, causing the support leg 13, which is threadedly connected to the lead screw 12, to contact the ground. The multiple support legs form a stable support system, which helps the overall structure remain stable during construction, prevents tipping or movement, and ensures operational safety.

[0025] Working principle: During use, the lifting and lowering of the support frame 6 can be controlled by the multi-stage telescopic arm 2, and the movement of the support frame 6 can be controlled by the drive of the motor 4, so that the live cable is located at the lower bend of the support frame 6. Then, the cable to be crossed is pulled across from the inner roller 7 of the support frame 6 (currently, the existing method of moving the cable to the high support frame 6 is generally to tie the cable to a heavy object and throw it onto the support frame 6, or to use a drone to carry the cable to the high support frame 6). This prevents the cable to be crossed from contacting the live cable due to sagging or other reasons, and avoids friction between the cable and the live cable during the crossing process. The extension and retraction of the hydraulic rod 9 can make the first support leg 10 touch the ground, and the rotation of the second lead screw 12 can make the second support leg 13 touch the ground. Multiple support legs form a stable support system, which helps the overall structure maintain stability during construction, prevents tilting or movement, and ensures operational safety.

[0026] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An ultra-high voltage power transmission line construction live crossing device, characterized in that, include: The main body of the crossing device (1) is fixedly connected to a multi-stage telescopic arm (2) on its inner side. The output end of the multi-stage telescopic arm (2) is fixedly connected to a base (3). The inner wall of the base (3) is fixedly connected to a motor (4). The output end of the motor (4) is fixedly connected to a lead screw (5). The outer surface of the lead screw (5) is threadedly connected to a support frame (6). The inner wall of the support frame (6) is rotatably connected to a roller (7). The outer surface of the main body of the crossing device (1) is fixedly connected to a fixing plate (8). The lower surface of the fixing plate (8) is hinged to a hydraulic rod (9). The output end of the hydraulic rod (9) is hinged to a support leg (10). The outer surface of the support leg (10) is fixedly connected to a fixing frame (11). The inner side of the fixing frame (11) is rotatably connected to a lead screw (12). The outer surface of the lead screw (12) is threadedly connected to a support leg (13). The outer surface of the support leg (13) is slidably connected to the support leg (10).

2. The device for live crossing of UHV transmission line construction according to claim 1, characterized in that, The inner wall of the base (3) is fixedly connected to a guide rod (14), and the outer surface of the guide rod (14) is slidably connected to the support frame (6).

3. The device according to claim 1, characterized in that, One end of the lead screw (12) is fixedly connected to a handle, which is located on the outside of the fixing frame (11).

4. The device according to claim 1, characterized in that, The end of the lead screw 1 (5) away from the motor (4) is rotatably connected to the base (3), and the end of the lead screw 2 (12) away from the handle is rotatably connected to the support leg 1 (10).

5. The device according to claim 1, characterized in that, The outer surface of the support leg (10) is rotatably connected to the main body (1) of the crossing device, and multiple rollers (7) are provided and evenly distributed on the support frame (6).

6. The device according to claim 1, characterized in that, The outer surface of the support frame (6) is fixedly connected to an identification box (15), and an identification plate is placed inside the identification box (15).

7. The device according to claim 1, characterized in that, Two support legs (10) and two support legs (13) are provided respectively, and are located on both sides of the main body (1) of the crossing device. A warning light (16) is provided on the upper surface of the fixing plate (8).

8. The device according to claim 1, characterized in that, The upper surface of the fixing plate (8) is provided with a fitting groove (17), and the inner wall of the fitting groove (17) abuts against the support frame (6).

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