Folding mobile power transmission line automatic protection crossing system and application thereof

Abstract

This invention relates to a folding mobile automatic protection crossing system for power transmission lines and its application, belonging to the technical field of power line construction equipment. The crossing system includes a mobile vehicle body, a main telescopic boom, and a deployment mechanism. One end of the main telescopic boom is hinged to the deployment mechanism, and the other end is mounted on the upper side of the mobile vehicle body via a rotating platform. A hydraulic cylinder A is installed between the main telescopic boom and the rotating platform, and a hydraulic cylinder B is installed between the main telescopic boom and the deployment mechanism. The deployment mechanism consists of several deployment frames connected sequentially by connecting components. A protective mechanism is installed within each deployment frame, and auxiliary support mechanisms are installed between the deployment mechanism and the mobile vehicle body. This invention achieves high-strength protection and mechatronic operation, eliminating threats and hidden dangers to traffic safety during crossing operations.

Description

Technical Field

[0001] This invention relates to a foldable mobile automatic protection crossing system for power transmission lines and its application, belonging to the technical field of power line construction equipment. Background Technology

[0002] With the continuous expansion of power construction, transmission lines frequently need to cross existing power lines, highways, railways, and other obstacles during new construction or expansion. Traditional crossing protection methods mostly rely on the manual erection of temporary structures, which is not only inefficient but also poses significant safety hazards. Furthermore, it easily disrupts surrounding traffic and the environment, making it difficult to meet the requirements of modern power transmission engineering for efficient, safe, and environmentally friendly construction. Currently, in scenarios involving crossing highway bridges and elevated rail transit, commonly used safety protection methods still primarily involve setting up isolation nets and erecting scaffolding. These methods pose a significant threat to the driving safety of passing vehicles and have a substantial impact on normal traffic organization.

[0003] In the prior art, Chinese patent document CN119852890A discloses a power distribution network crossing overhead line operation equipment and its usage method, including a base at the bottom, a support column at the top of the base, and a crossing frame at the top of the support column. The base includes movable mechanisms arranged in pairs at the front and rear ends of the base bottom, and bolt mounting holes between the movable mechanisms on the base. A first fixing bolt is installed in each bolt mounting hole. The support column includes a retractable support rod composed of multiple rod sections, with a support plate at the top of the retractable support rod. Positioning columns and lifting columns are arranged left and right on the upper part of the support plate. The crossing frame includes a clamping mechanism at the lower end and a U-shaped crossing cable groove at the upper end of the clamping mechanism. The clamping mechanism is connected to the positioning columns and lifting columns at the upper part of the support plate. This equipment is used to support line transmission and does not involve isolation or protection design. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a foldable mobile automatic protection system for power transmission lines and its application. It significantly reduces interference with train operation, greatly improves the efficiency of safety protection engineering, and eliminates the threat and hidden dangers to train safety caused by cross-construction through high-strength protection and mechatronic operation, enabling the system to adapt to the safety protection construction needs under various environmental conditions.

[0005] The technical solution of the present invention is as follows: A foldable mobile automatic protection crossing system for power transmission lines includes a mobile vehicle body, a main telescopic arm, and a deployment mechanism. The deployment mechanism is hinged to one end of the main telescopic arm, and the other end is mounted on the upper side of the mobile vehicle body via a rotating platform. A hydraulic cylinder A is installed between the main telescopic arm and the rotating platform, and a hydraulic cylinder B is installed between the main telescopic arm and the deployment mechanism. The unfolding mechanism consists of several unfolding frames, which are connected in sequence by connecting components. Protective mechanisms are installed inside the unfolding frames, and auxiliary support mechanisms are installed on the unfolding mechanism and the mobile vehicle body.

[0006] According to a preferred embodiment of the present invention, the auxiliary support mechanism includes a winch, a wire rope, and uprights. A winch is provided on the rotating platform, and uprights are provided on the main telescopic boom and all the unfolding frames except the end unfolding frame. The height of several uprights decreases sequentially along the direction from the main telescopic boom to the unfolding frame. Each upright has a through hole at its top. One end of the wire rope on the winch passes through several support through holes sequentially and is then connected to the end unfolding frame.

[0007] According to a preferred embodiment of the present invention, hydraulic support legs are respectively provided at the four corners of the mobile vehicle body. During operation, the four hydraulic support legs are deployed to ensure the overall stability of the mobile vehicle body.

[0008] According to a preferred embodiment of the present invention, each unfolding frame is symmetrically provided with a protective mechanism, which includes a folding arm A, a folding arm B, a straight arm, a hydraulic cylinder C, and a winding roller. Folding arms A are respectively hinged to both ends of one side of the unfolding frame, and folding arms B are hinged to folding arms A. A straight arm is provided between the two folding arms B. A hydraulic cylinder C is provided between the folding arms A and the unfolding frame. A winding roller is also provided on the unfolding frame. One end of the protective net inside the winding roller is connected to the straight arm. When the straight arm moves outward, it drives the protective net to extend outward.

[0009] According to a preferred embodiment of the present invention, a motor and a transmission shaft are respectively provided at both ends of the middle part of the folding arm A. Gear A and gear B are fixedly provided on the transmission shaft. Gear A is connected to the output shaft of the motor through a chain. Gear C is provided on the hinge shaft connecting the folding arm A and the folding arm B. The folding arm B is fixedly connected to the hinge shaft. Gear C is meshed with gear B. When the hydraulic cylinder C drives the folding arm A to move, the motor drives the folding arm B to flip outward through the chain. With the driving force of the hydraulic cylinder C, the protective mechanism can be smoothly unfolded.

[0010] According to a preferred embodiment of the present invention, the connecting assembly includes a folding cylinder, a connecting plate, and a movable rod. The folding cylinder is provided on the unfolding frame. The output shaft of the folding cylinder is hinged to one side of the connecting plate. The bottom of the connecting plate is hinged to the unfolding frame. The other side of the connecting plate is hinged to the next unfolding frame via the movable rod. The unfolding and folding of the unfolding frame is controlled by the extension and retraction of the folding cylinder.

[0011] The application steps of the above-mentioned foldable mobile transmission line automatic protection crossing system are as follows: S1, the crossing system enters the work site, reaches the preset coordinate position and adjusts the orientation of the moving vehicle body, the hydraulic support legs unfold to support the moving vehicle body, so that the crossing system is stably parked in the work position; S2, the rotary platform rotates to bring the main telescopic arm to the preset position, then the hydraulic cylinder A extends to make the main telescopic arm vertical, and then the main telescopic arm extends to bring the unfolding mechanism to the set height; S3, cylinder B extends, bringing the unfolding mechanism to a horizontal state. Then, the folding cylinder extends, driving the unfolding frame to unfold via the connecting plate. When the main telescopic arm and the unfolding mechanism move, the wire rope inside the winch moves with the unfolding of the support. S4. After all the deployment frames are horizontally deployed, the winch is locked, the wire rope is tightened at the end of the deployment frame for auxiliary support, and then the protective mechanism is deployed to complete the crossing of the road below.

[0012] According to a preferred embodiment of the present invention, in step S4, the protective mechanism unfolds as follows: the hydraulic cylinder C extends, causing the folding arm A to extend outward; simultaneously, under the limiting action and the drive of the motor, the folding arm B extends along with the folding arm A; and during the movement, the straight arm causes the protective net to extend outward until it is fully unfolded.

[0013] According to a preferred embodiment of the present invention, in step S4, if an ultra-wide crossing scenario is encountered, i.e., one crossing system cannot cross the road, two crossing systems are used in conjunction to achieve a wider range of protective coverage.

[0014] The beneficial effects of this invention are as follows: 1. This invention achieves fully automated operation of positioning, deployment, docking, protective netting, and recovery through the efficient collaboration of various components, which greatly reduces interference with traffic organization, significantly improves the operational efficiency of safety protection engineering, and eliminates the threat and hidden dangers to traffic safety caused by cross-construction through high-strength protection and mechatronic operation, enabling the system to adapt to the safety protection construction needs under various environmental conditions.

[0015] 2. This invention can be used for single or multiple vehicle combinations according to construction needs, flexibly adjusting the protection width and crossing distance to adapt to new lines of various voltage levels and various types of road crossing construction, meeting a variety of construction needs from rural roads to high-speed railways, and achieving efficient and safe crossing construction.

[0016] 3. This invention utilizes the cooperation between auxiliary support mechanisms and connecting components to significantly improve the deployment stability of the deployment mechanism and ensure construction safety.

[0017] 4. From deployment to full arm deployment, this invention can complete the automatic protective netting operation of the entire vehicle within 30 minutes. The entire operation process is mechanized, and the remote control is reliable and precise. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2This is a schematic diagram of the protective mechanism of the present invention. The protective net is not shown in the diagram for easy viewing. Figure 3 This is a schematic diagram of the connection component of the present invention; The components are as follows: 1. Moving vehicle body; 2. Hydraulic cylinder A; 3. Main telescopic boom; 4. Hydraulic cylinder B; 5. Movable rod; 6. Connecting plate; 7. Hydraulic support leg; 8. Folding boom A; 9. Folding boom B; 10. Straight boom; 11. Hydraulic cylinder C; 12. Protective net; 13. Deployment frame A; 14. Deployment frame B; 15. Deployment frame C; 16. Folding hydraulic cylinder; 17. Rotating platform; 18. Winch; 19. Wire rope; 20. Vertical frame; 21. Chain; 22. Hinge shaft. Detailed Implementation

[0019] The present invention will be further described below with reference to the embodiments and accompanying drawings, but is not limited thereto. Example 1:

[0020] like Figures 1-3 As shown, this embodiment provides a foldable mobile automatic protection crossing system for transmission lines, including a mobile vehicle body 1, a main telescopic arm 3 and an unfolding mechanism. The unfolding mechanism is hinged to one end of the main telescopic arm 3, and the other end is set on the upper side of the mobile vehicle body 1 through a rotating platform 17. A hydraulic cylinder A2 is set between the main telescopic arm 3 and the rotating platform 17, and a hydraulic cylinder B4 is set between the main telescopic arm 3 and the unfolding mechanism. The unfolding mechanism includes unfolding frame A13, unfolding frame B14 and unfolding frame C15. The unfolding frame A13, unfolding frame B14 and unfolding frame C15 are connected in sequence by connecting components. Protective mechanisms are symmetrically arranged inside the unfolding frame A13, unfolding frame B14 and unfolding frame C15. Auxiliary support mechanisms are provided on the unfolding mechanism and the mobile vehicle body 1.

[0021] The auxiliary support mechanism includes a winch 18, a wire rope 19, and a support frame 20. The winch 18 is installed on the rotating platform 17. The support frame 20 is installed on the main telescopic boom 3, the unfolding frame A13, and the unfolding frame B14. The height of the support frames 20 decreases sequentially along the direction from the main telescopic boom to the unfolding frame. The top of each support frame 20 is provided with a through hole. One end of the wire rope 19 on the winch 18 passes through the through holes of the support frame and is connected to the unfolding frame C15.

[0022] The mobile vehicle body 1 is equipped with hydraulic support legs 7 at each of its four corners. When in operation, the hydraulic support legs unfold to ensure the overall stability of the mobile vehicle body.

[0023] The protective mechanism includes a folding arm A8, a folding arm B9, a straight arm 10, a hydraulic cylinder C11, and a take-up roller (the take-up roller is existing equipment and is not shown in the figure; it is a conventional drum design and is driven and controlled by a motor on the outside). Folding arms A8 are hinged to both ends of one side of the unfolding frame, and folding arms B9 are hinged to folding arms A8. A straight arm 10 is set between the two folding arms B9. A hydraulic cylinder C11 is set between folding arms A8 and the unfolding frame. A take-up roller is also set on the unfolding frame. One end of the protective net 12 inside the take-up roller is connected to the straight arm 10. When the straight arm moves outward, it drives the protective net to extend outward. The take-up roller, the straight arm 10, and the unfolding frame are parallel.

[0024] A motor and a drive shaft are respectively installed at both ends of the middle part of the folding arm A8. Gears A and B are installed on the drive shaft. The output shaft of the motor is connected to gear A through chain 21. Gear C is installed on the hinge shaft 22 connecting folding arm A and folding arm B. Folding arm B9 is fixedly connected to hinge shaft 22. Gear B meshes with gear C. When the hydraulic cylinder C drives the folding arm A to move, the drive shaft is used as an intermediate power transmission mechanism. The motor drives the folding arm B to flip outward through the chain. With the driving force of the hydraulic cylinder C, the protective mechanism can be smoothly unfolded.

[0025] The connecting assembly includes a folding cylinder 16, a connecting plate 6, and a movable rod 5. Taking the unfolding frame B14 and unfolding frame C15 as examples, the unfolding frame B14 is equipped with a folding cylinder 16. The output shaft of the folding cylinder 16 is hinged to one side of the connecting plate 6. The bottom of the connecting plate 6 is hinged to the unfolding frame B14, and the other side of the connecting plate 6 is hinged to the unfolding frame C15 through the movable rod. The unfolding and folding of the unfolding frame is controlled by the extension and retraction of the folding cylinder.

[0026] The application steps of the above-mentioned foldable mobile transmission line automatic protection crossing system are as follows: S1, the crossing system enters the work site, reaches the preset coordinate position and adjusts the orientation of the moving vehicle body. The hydraulic support leg 7 unfolds to support the moving vehicle body 1, so that the crossing system is stably parked in the work position. S2, the rotary platform 17 rotates, causing the main telescopic arm 3 to reach the preset position. Then, the hydraulic cylinder A2 extends, making the main telescopic arm 3 vertical. Then, the main telescopic arm 3 extends, causing the unfolding mechanism to reach the set height. S3, cylinder B4 extends, bringing the unfolding mechanism to a horizontal state. Then, folding cylinder 16 extends, driving the unfolding frame to unfold via the connecting plate. When the main telescopic arm and the unfolding mechanism move, the wire rope inside the winch moves with the unfolding of the support. S4, after all the deployment frames have been extended into place, the winch 18 is locked, the wire rope 19 is tightened to support the deployment frames C15, and then the protective mechanism is deployed to complete the crossing of the road below.

[0027] The protective mechanism unfolds as follows: the hydraulic cylinder C11 extends, causing the folding arm A8 to extend outward. At the same time, under the limiting action and the drive of the motor, the folding arm B9 extends along with the folding arm A8. During the movement, the straight arm 10 causes the protective net 12 to extend outward until it is fully unfolded.

[0028] In the case of ultra-wide crossing scenarios, where one crossing system cannot cross the road, two crossing systems can be used together to achieve a wider range of protection coverage.

[0029] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be within the protection scope of the present invention.

Claims

1. A foldable mobile transmission line automatic protection crossing system, characterized in that, It includes a mobile vehicle body, a main telescopic arm, and a deployment mechanism. One end of the main telescopic arm is hinged to the deployment mechanism, and the other end is set on the upper side of the mobile vehicle body via a rotary platform. A hydraulic cylinder A is set between the main telescopic arm and the rotary platform, and a hydraulic cylinder B is set between the main telescopic arm and the deployment mechanism. The unfolding mechanism consists of several unfolding frames, which are connected in sequence by connecting components. Protective mechanisms are installed inside the unfolding frames, and auxiliary support mechanisms are installed on the unfolding mechanism and the mobile vehicle body.

2. The folding mobile electric transmission line automatic protection crossing system according to claim 1, characterized in that, The auxiliary support mechanism includes a winch, wire rope, and uprights. A winch is installed on the slewing platform. Uprights are installed on the main telescopic boom and all the uprights except the end unfolding frame. The top of each upright is provided with a through hole. One end of the wire rope on the winch passes through several support through holes in sequence and is then connected to the end unfolding frame.

3. The folding mobile electric transmission line automatic protection crossing system according to claim 2, characterized in that, The height of several uprights decreases sequentially along the direction from the main telescopic arm to the unfolding frame.

4. The foldable mobile automatic protection crossing system for transmission lines as described in claim 1, characterized in that, Hydraulic support legs are installed at each of the four corners of the mobile vehicle.

5. The foldable mobile automatic protection crossing system for transmission lines as described in claim 2, characterized in that, Each unfolding frame is symmetrically equipped with a protective mechanism, which includes a folding arm A, a folding arm B, a straight arm, a hydraulic cylinder C, and a take-up roller. Folding arms A are hinged to both ends of one side of the unfolding frame, and folding arms B are hinged to folding arms A. A straight arm is set between the two folding arms B. A hydraulic cylinder C is set between folding arms A and the unfolding frame. A take-up roller is also set on the unfolding frame, and one end of the protective net inside the take-up roller is connected to the straight arm.

6. The foldable mobile automatic protection crossing system for transmission lines as described in claim 5, characterized in that, A motor and a drive shaft are respectively installed at both ends of the middle part of the folding arm A. Gear A and gear B are fixedly installed on the drive shaft. Gear A is connected to the motor output shaft through a chain. Gear C is installed on the hinge shaft connecting the folding arm A and the folding arm B. The folding arm B is fixedly connected to the hinge shaft, and gear C is meshed with gear B.

7. The foldable mobile automatic protection crossing system for transmission lines as described in claim 6, characterized in that, The connecting assembly includes a folding cylinder, a connecting plate, and a movable rod. The folding cylinder is installed on the unfolding frame. The output shaft of the folding cylinder is hinged to one side of the connecting plate. The bottom of the connecting plate is hinged to the unfolding frame, and the other side of the connecting plate is hinged to the next unfolding frame via the movable rod.

8. The application of the foldable mobile automatic protection crossing system for transmission lines as described in claim 7, characterized in that, The steps are as follows: S1, the crossing system enters the work site, reaches the preset coordinate position and adjusts the orientation of the moving vehicle body, the hydraulic support legs unfold to support the moving vehicle body, so that the crossing system is stably parked in the work position; S2, the rotary platform rotates to bring the main telescopic arm to the preset position, then the hydraulic cylinder A extends to make the main telescopic arm vertical, and then the main telescopic arm extends to bring the unfolding mechanism to the set height; S3, cylinder B extends, bringing the unfolding mechanism to a horizontal state. Then, the folding cylinder extends, driving the unfolding frame to unfold via the connecting plate. When the main telescopic arm and the unfolding mechanism move, the wire rope inside the winch moves with the unfolding of the support. S4. After all the deployment frames are horizontally deployed, the winch is locked, the wire rope is tightened at the end of the deployment frame for auxiliary support, and then the protective mechanism is deployed to complete the crossing of the road below.

9. The application of the foldable mobile automatic protection crossing system for transmission lines as described in claim 8, characterized in that, In step S4, the protective mechanism unfolds as follows: the hydraulic cylinder C extends, causing the folding arm A to extend outward. At the same time, under the limiting action and the drive of the motor, the folding arm B extends along with the folding arm A. During the movement, the straight arm causes the protective net to extend outward until it is fully unfolded.

10. The application of the foldable mobile automatic protection crossing system for transmission lines as described in claim 8, characterized in that, In step S4, if an ultra-wide crossing scenario is encountered, i.e., one crossing system cannot cross the road, two crossing systems are used in conjunction.

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