Intelligent protection platform for railway crossing construction of track-occupied power transmission projects

Abstract

The present invention relates to the technical field of overhead power transmission lines, specifically to an intelligent protective platform for railway crossing construction in track-occupied power transmission projects, comprising a vehicle body, a side box plate provided on the vehicle body, a mobile mechanism provided on the vehicle body and the side box plate, a working chassis provided at the output end of the mobile mechanism, a lifting support mechanism provided on the working chassis, a connecting mechanism provided on the lifting support mechanism, and a workbench provided on the connecting mechanism. The beneficial effects of the present invention are as follows: it can realize the support of a construction device across the physical gap between the railway track surface and the two-way railway, effectively avoid occupying outdoor cultivated land, avoid the difficulty of erection caused by complex terrain conditions, reduce the shaking or jittering of the protective net when a conductor, steel strand or other long strip component in the spanning direction falls on the protective net, and avoid the conductor, steel strand or other long strip component in the spanning direction falling from the protective net during the shaking or jittering of the protective net, thereby improving safety.

Description

Technical Field

[0001] The present invention relates to the technical field of overhead transmission lines, and in particular to an intelligent protection platform for railway crossing construction in a track-occupying transmission project. Background Art

[0002] During the construction of power transmission lines, it is inevitable that wire construction will cross existing high-voltage or ultra-high-voltage transmission lines, railways, and highways. Furthermore, with the rapid expansion of my country's high-speed railway network, there is an increasing number of cases where wire construction is being carried out across high-speed railways and other electrified railways during the operation and maintenance of new transmission lines and existing lines. If effective safety measures are not taken, this will endanger the safety of the railway power supply network and cause serious social impacts. A commonly used method in the industry is to erect a spanning frame and a safety net. This involves erecting a safety net of a certain width at a safe distance above the lines and facilities being crossed. Even in extreme situations during construction, such as the accident of a conductor accidentally falling, the safety net can reliably support it, effectively protecting the objects being crossed.

[0003] A crossing frame for crossing high-speed railways or highway construction disclosed in Chinese patent CN118554333A includes a frame assembly, a sealing net traction device, main load-bearing cables and a sealing net; two frame assemblies are arranged and respectively placed on the left and right sides of the object to be crossed; the frame assembly includes a crossbeam, a main column, an assembled base and an assembled ground anchor; two main load-bearing cables are provided and respectively connected to the crossbeams of the left and right side frame assemblies, and the sealing net is hung between the two main load-bearing cables; two sealing net traction devices are provided and respectively installed on the crossbeams of the left and right side frame assemblies, and the two sealing net traction devices are connected to the sealing net traction.

[0004] However, the railway crossing protective equipment still has the following problems in actual use:

[0005] Since the railway network has a high density of departures and a high speed during the day, when carrying out construction across the railway, work can only be carried out during the nighttime window period, and the operation time is short. If the existing protective devices cannot be erected in one window period, construction must be stopped and it is necessary to wait for the next window period to continue construction and allow the railway to be opened to traffic, otherwise the railway will be shut down. When carrying out construction across different areas on the same railway line, construction needs to be repeated, and the construction process also requires the occupation of outdoor farmland, which will be affected by the terrain of the installation. When the terrain is more complex, it will affect the stability and safety of the installation. At the same time, the different ropes that make up the protective net are rigidly connected. When a wire, steel strand or other long strip component along the span direction is dropped from above, the rebound force generated by the tightening of the rope will cause the protective net to shake or vibrate. During the shaking or vibrating process of the protective net, the wire, steel strand or other long strip component along the span direction on it may fall from the protective net, posing a certain safety hazard. Summary of the Invention

[0006] The present invention provides an intelligent protection platform for railway crossing construction in track-occupied power transmission projects to solve the above-mentioned technical problems.

[0007] The intelligent protective platform for railway crossing construction of a track-occupied power transmission project of the present invention adopts the following technical solution: it comprises a vehicle body, side boxes are provided on the vehicle body, a moving mechanism is provided on the vehicle body and the side boxes, a working chassis is provided at the output end of the moving mechanism, a lifting support mechanism is provided on the working chassis, a connecting mechanism is provided on the lifting support mechanism, a working platform is provided on the connecting mechanism, protective nets are provided on both sides of the working platform, and hydraulic support legs are provided on the side boxes;

[0008] The protective net includes two first connecting ropes, and a second connecting rope is provided between the two first connecting ropes;

[0009] The first connecting rope is provided with a connecting ring, one end of the first connecting rope is provided with a winding roller, and the end of the first connecting rope away from the winding roller is provided with a connecting piece;

[0010] Both ends of the second connecting rope are provided with connecting shafts, and both ends of the connecting shaft are provided with limiting members. A connecting frame is slidably connected to the connecting shaft, a first elastic member is provided between one of the limiting members and the connecting frame, a second slide groove is provided on the connecting frame, and the number of the second slide grooves is two. The spacing between the two second slide grooves close to one end of the connecting shaft is greater than the spacing between the two second slide grooves away from one end of the connecting shaft. A slider is slidably connected in the second slide groove, and a second elastic member is provided between the slider and the connecting frame. A friction wheel is provided on one side of the slider, and a hook is rotatably connected to the side of the connecting frame away from the second connecting rope, and the hook is connected to the connecting ring.

[0011] Furthermore, the connecting mechanism includes a first connecting platform and a second connecting platform, a first driving member is provided on the top of the first connecting platform, a first gear is provided at the output end of the first driving member, the second connecting platform is rotatably connected to the top of the first connecting platform, a second gear is provided at the bottom of the second connecting platform, the second gear is engaged with the first gear, and a rack is provided on the top of the second connecting platform.

[0012] Furthermore, a guardrail is provided on the workbench, an expansion arm is hinged on the guardrail, a crossbeam is provided on the expansion arm, a second hydraulic cylinder is provided between the expansion arm and the guardrail, a second driving member is provided at the bottom of the workbench, a third gear is provided at the output end of the second driving member, and a roller is provided at the bottom of the workbench.

[0013] Furthermore, a first sliding groove is provided on the unfolding arm, a third driving member is provided on the unfolding arm, a screw is provided at the output end of the third driving member, and a connecting seat is threadedly connected to the screw.

[0014] Furthermore, the winding roller is rotatably connected to the connecting seat.

[0015] Furthermore, the first connecting rope is connected to the guardrail through a connecting piece.

[0016] Furthermore, there are multiple second connecting ropes, and the multiple second connecting ropes are distributed in a linear array between the two first connecting ropes.

[0017] Furthermore, the first connecting platform is hinged to an end of the lifting support mechanism away from the working chassis.

[0018] Furthermore, the third gear and the rack are meshed with each other, and the workbench is movably connected to the second connecting platform through rollers.

[0019] Furthermore, the connecting seat is slidably connected to the unfolding arm through the first sliding groove, and the crossbeam is slidably connected to the connecting seat.

[0020] The beneficial effects of the present invention are: it can realize the support of the spanning construction device in the solid gap between the railway track surface and the two-way railway, effectively avoid occupying wild cultivated land, avoid the difficulty of erection caused by complex terrain conditions, and minimize the impact on the surrounding environment of the spanning area. When a wire, steel strand or other long strip components in the spanning direction fall on the protective net, the second connecting rope is slowly tightened at the moment of force, reducing the rebound force generated by the second connecting rope after it is suddenly tightened, thereby reducing the shaking or jittering of the protective net, and avoiding the wire, steel strand or other long strip components in the spanning direction that fall on the protective net during the shaking or jittering process, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic structural diagram of a first state of an embodiment of the present invention;

[0023] Figure 2 This is a schematic structural diagram of a second state of an embodiment of the present invention;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure at point A in the middle;

[0025] Figure 4 for Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0026] Figure 5 This is a schematic structural diagram of a vehicle body according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic structural diagram of a connecting mechanism from a first perspective according to an embodiment of the present invention;

[0028] Figure 7 This is a structural schematic diagram of the connecting mechanism of an embodiment of the present invention from a second perspective;

[0029] Figure 8 This is a schematic structural diagram of a workbench from a first perspective according to an embodiment of the present invention;

[0030] Figure 9 for Figure 8 A magnified schematic diagram of the structure at C in the middle;

[0031] Figure 10 This is a schematic structural diagram of a workbench from a second viewing angle according to an embodiment of the present invention;

[0032] Figure 11 for Figure 10 A magnified schematic diagram of the structure at D in the middle;

[0033] Figure 12 This is a schematic structural diagram of a protective net according to an embodiment of the present invention;

[0034] Figure 13 for Figure 12 A magnified schematic diagram of the structure at E in the middle;

[0035] Figure 14 This is a schematic structural diagram of a first connecting rope according to an embodiment of the present invention;

[0036] Figure 15 This is a schematic structural diagram of a second connecting rope according to an embodiment of the present invention;

[0037] Figure 16 for Figure 15 Enlarged schematic diagram of the structure at F in the middle.

[0038] In the figure: 1. Vehicle body; 2. Side box plate; 3. Moving mechanism; 4. Working chassis; 5. Support column; 6. First hydraulic cylinder; 7. Connecting mechanism; 701. First connecting platform; 702. Second connecting platform; 703. First driving member; 704. First gear; 705. Second gear; 706. Rack; 8. Working platform; 81. Guardrail; 82. Deployment arm; 821. First chute; 822. Third driving member; 823. Screw; 824. Connecting seat; 83. Crossbeam; 84. Second hydraulic cylinder; 85. Second driving member; 86. Third gear; 87. Roller; 9. Protective net; 91. First connecting rope; 911. Connecting ring; 912. Winding roller; 913. Connecting member; 92. Second connecting rope; 921. Connecting shaft; 922. Limiting member; 923. Connecting frame; 924. First elastic member; 925. Second slide groove; 926. Slider; 927. Second elastic member; 928. Friction wheel; 929. Hook; 10. Hydraulic support leg. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] The embodiment of the intelligent protection platform for railway crossing construction of track-occupied power transmission engineering of the present invention is as follows: Figure 1 、 Figure 2 and Figure 5As shown, it includes a vehicle body 1, a side box plate 2 is provided on the vehicle body 1, a moving mechanism 3 is provided on the vehicle body 1 and the side box plate 2, a working chassis 4 is provided at the output end of the moving mechanism 3, and a lifting support mechanism is provided on the working chassis 4. In this embodiment, the lifting support mechanism includes a support column 5 and a first hydraulic cylinder 6. The top of the working chassis 4 is hinged with a support column 5, and the number of the support columns 5 is two. A first hydraulic cylinder 6 is provided between the support column 5 and the working chassis 4, and a connecting mechanism 7 is hinged at one end of the support column 5 away from the working chassis 4. A connecting mechanism 7 is provided on the lifting support mechanism, and a working platform 8 is provided on the connecting mechanism 7. A parallelogram structure is formed between the two support columns 5, the working chassis 4 and the connecting mechanism 7 to ensure that the connecting mechanism 7 is always in a horizontal state during the lifting process, thereby ensuring that the working platform 8 is in a horizontal state. Protective nets 9 are provided on both sides of the working platform 8, and hydraulic support legs 10 are provided on the side box plates 2. When the vehicle body 1 reaches the working position, after it is stopped and locked, it can be flipped unilaterally or bilaterally according to on-site needs. The side box plates 2 are unfolded and the hydraulic support legs 10 are started to press against the ground on both sides of the track to form a stable support. After the support is stable, the mobile mechanism 3 can realize the overall translation of the working chassis 4 and its top equipment, which is used to avoid the position of the overhead railway contact network line to ensure that subsequent operations will not interfere with the contact network line. The mobile mechanism 3 cooperates with the side box plates 2 and the hydraulic support legs 10, and can be translated on one side or on both sides. Because it is necessary to avoid the contact network, the translation operation of the mobile mechanism 3 is interlocked with the lifting operation of the lifting support mechanism. Only when the lifting support mechanism is fully retracted can the mobile mechanism 3 move to ensure stability during movement. The mobile mechanism 3 includes a translation track, a translation wheel group, a locking structure, a cable drag chain, a translation drive device, etc. It should be noted that the interlocking relationship between the translation operation of the mobile mechanism 3 and the lifting operation of the lifting support mechanism is an existing technology or can be implemented using existing technology. The structure and working principle of the mobile mechanism 3 are also existing technology or can be implemented using existing technology.

[0041] This application also includes a safety detection system and an operation control system. The safety detection system monitors equipment operating status, performs equipment safety checks, provides feedback on equipment location, checks interlocks between different devices, determines the effectiveness of safety devices, handles emergencies, provides data feedback, and performs fault diagnosis. It is crucial for ensuring the safe and reliable operation of the spanning device. The safety detection system includes various switch components, limit position detection components, emergency stop safety components, speed detection components, position detection components, video monitoring systems, brakes, safety latches, positioning device detection, and safety warning devices. The operation control system controls the normal operation of the entire equipment system. It comprises equipment operation control, operation display, and audio and visual alarms. It utilizes industrial control equipment and an industrial network to control the mechanical equipment, implementing system operations, display, detection, and fault diagnosis. The operating system operates on two separate consoles, providing backup functionality. Controls such as powering on and off the control system, setting parameters, and operating the system can be performed from either console. Once the target operating conditions are set, automatic operation is achieved with a single button press. Manual forward and reverse speed control is also possible. The control system comprises a main PLC, field PLCs, inverters, sensors, cables, and wiring. The touch screen realizes monitoring, parameter setting and network interface functions, and the on-site PLC realizes control and signal acquisition functions. It should be noted that the safety detection system and the operation control system are both existing technologies or can be implemented using existing technologies.

[0042] like Figure 6 and Figure 7 As shown, the connecting mechanism 7 includes a first connecting platform 701 and a second connecting platform 702. The first connecting platform 701 is hinged at the end of the support column 5 away from the working chassis 4. A first driving member 703 is provided on the first connecting platform 701. A first gear 704 is provided at the output end of the first driving member 703. The second connecting platform 702 is rotatably connected to the top of the first connecting platform 701. A second gear 705 is provided at the bottom of the second connecting platform 702. The second gear 705 and the first gear 704 are engaged with each other. A rack 706 is provided on the top of the second connecting platform 702.

[0043] like Figures 8 to 11 As shown, the workbench 8 is provided with a lighting device and a monitoring device, a guardrail 81 is provided on the workbench 8, an expansion arm 82 is hinged on the guardrail 81, a crossbeam 83 is provided on the expansion arm 82, the expansion arm 82 and the crossbeam 83 are both insulated, a second hydraulic cylinder 84 is provided between the expansion arm 82 and the guardrail 81, a second driving member 85 is provided at the bottom of the workbench 8, a third gear 86 is provided at the output end of the second driving member 85, the third gear 86 and the rack 706 are engaged with each other, a roller 87 is provided at the bottom of the workbench 8, and the workbench 8 is movably connected to the second connecting platform 702 through the roller 87.

[0044] like Figure 3 、 Figure 4 and Figure 9 As shown, a first sliding groove 821 is provided on the unfolding arm 82, and a third driving member 822 is provided on the unfolding arm 82. A screw 823 is provided at the output end of the third driving member 822, and a connecting seat 824 is threadedly connected to the screw 823. The connecting seat 824 is slidably connected to the unfolding arm 82 through the first sliding groove 821, and the crossbeam 83 is slidably connected to the connecting seat 824.

[0045] like Figure 12 and Figure 13 As shown, the protective net 9 includes two first connecting ropes 91, and a second connecting rope 92 is arranged between the two first connecting ropes 91. The number of the second connecting ropes 92 is multiple, and the multiple second connecting ropes 92 are linearly arrayed between the two first connecting ropes 91. The surfaces of the first connecting rope 91 and the second connecting rope 92 are both insulated accordingly.

[0046] like Figure 3 、 Figure 9 、 Figure 13 and Figure 14 As shown, a connecting ring 911 is provided on the first connecting rope 91, a winding roller 912 is provided at one end of the first connecting rope 91, the winding roller 912 is rotatably connected to the connecting seat 824, a torsion spring is provided between the winding roller 912 and the connecting seat 824, and a connecting piece 913 is provided at the end of the first connecting rope 91 away from the winding roller 912, and the first connecting rope 91 is connected to the guardrail 81 through the connecting piece 913.

[0047] like Figure 4 、 Figure 12 、 Figure 13 、 Figure 15 and Figure 16 As shown, both ends of the second connecting rope 92 are provided with connecting shafts 921, and both ends of the connecting shaft 921 are provided with limiting members 922. A connecting frame 923 is slidably connected to the connecting shaft 921, and a first elastic member 924 is provided between one of the limiting members 922 and the connecting frame 923. A second sliding groove 925 is provided on the connecting frame 923, and the number of the second sliding grooves 925 is two. The spacing between the two second sliding grooves 925 close to one end of the connecting shaft 921 is greater than the spacing between the two second sliding grooves 925 away from one end of the connecting shaft 921. A slider 926 is slidably connected in the second sliding groove 925, and a second elastic member 927 is provided between the slider 926 and the connecting frame 923. A friction wheel 928 is provided on one side of the slider 926. The side of the connecting frame 923 away from the second connecting rope 92 is rotatably connected to a hook 929, and the hook 929 is connected to the connecting ring 911.

[0048] The working process is as follows:

[0049] S1. When inspecting and maintaining the railway contact network, after reaching the working position and the car body 1 is stopped and locked, the side box panels 2 can be flipped over on one side or both sides according to the needs of the site, and the hydraulic support legs 10 are activated to press against the ground on both sides of the track to form a stable support;

[0050] S2. After the support is stable, the moving mechanism 3 can realize the overall translation of the working chassis 4 and the equipment on top of the working chassis 4 to adjust the position of the equipment on the top of the working chassis 4. Then, the first hydraulic cylinder 6 is started, and the support column 5 drives the workbench 8 to rise through the connecting mechanism 7. The first driving member 703 is started. The first driving member 703 drives the second gear 705 to rotate through the first gear 704. The second gear 705 drives the workbench 8 to rotate through the second connecting platform 702 to adjust the angle of the workbench 8.

[0051] S3. Start the second driving member 85, which drives the third gear 86 to rotate. Since the rack 706 is fixedly connected to the second connecting platform 702 and the third gear 86 and the rack 706 are engaged with each other, when the third gear 86 rotates, it drives the workbench 8 to move on the second connecting platform 702, adjusting the position of the workbench 8 to facilitate the staff on the workbench 8 to inspect and maintain the railway contact network;

[0052] S4. During the span construction, the moving mechanism 3 can realize the overall translation of the working chassis 4 and its top equipment to avoid the position of the overhead railway contact network line, ensuring that subsequent operations will not interfere with the contact network line. Then, the first hydraulic cylinder 6 is activated, and the support column 5 drives the work platform 8 to rise through the connecting mechanism 7, so that the level of the work platform 8 is higher than the level of the railway contact network.

[0053] S5. Then, the second hydraulic cylinder 84 is activated, which drives the deployment arm 82 to rotate and deploy. The third driving member 822 is activated, which drives the screw 823 to rotate. The screw 823 drives the crossbeam 83 and the winding roller 912 to move along the first slide 821 on the deployment arm 82 through the connecting seat 824, driving the protective net 9 to deploy, thereby achieving safety protection when the transmission line crosses the railway track.

[0054] S6. During the construction of a transmission line span, if a conductor, steel strand, or other long strip component along the span direction falls onto the protective net 9, the force on the second connecting rope 92 suddenly increases at the moment the conductor, steel strand, or other long strip component along the span direction falls onto the protective net. The second connecting rope 92 pulls the connecting shaft 921 to slide in the connecting frame 923, and the first elastic member 924 contracts, cushioning the second connecting rope 92.

[0055] S7: When the second connecting rope 92 is pulled, the friction wheel 928 rotates due to the friction between the second connecting rope 92 and the friction wheel 928, causing the slider 926 to slide in the second sliding groove 925 and the second elastic member 927 to stretch.

[0056] S8. Since there are two second slide grooves 925 and the distance between the two second slide grooves 925 close to one end of the connecting shaft 921 is greater than the distance between the two second slide grooves 925 away from one end of the connecting shaft 921, as the slider 926 slides in the second slide groove 925, the friction wheel 928 will squeeze the second connecting rope 92, increasing the friction between the friction wheel 928 and the second connecting rope 92, so that the second connecting rope 92 moves slowly on the connecting frame 923, and the second connecting rope 92 is slowly tightened at the moment of being stressed, reducing the rebound force generated by the second connecting rope 92 being suddenly tightened, thereby reducing the shaking or jittering of the protective net 9, and preventing the protective net 9 from causing the wires, steel strands or other long strip components along the spanning direction to fall off the protective net 9 during the shaking or jittering process, thereby improving safety.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent protection platform for railway crossing construction in track-occupied power transmission projects, featuring: The vehicle comprises a vehicle body, side boxes are provided on the vehicle body, a moving mechanism is provided on the vehicle body and the side boxes, a working chassis is provided at the output end of the moving mechanism, a lifting support mechanism is provided on the working chassis, a connecting mechanism is provided on the lifting support mechanism, a working platform is provided on the connecting mechanism, protective nets are provided on both sides of the working platform, and hydraulic support legs are provided on the side boxes; The protective net includes two first connecting ropes, and a second connecting rope is provided between the two first connecting ropes; The first connecting rope is provided with a connecting ring, one end of the first connecting rope is provided with a winding roller, and the end of the first connecting rope away from the winding roller is provided with a connecting piece; The two ends of the second connecting rope are provided with connecting shafts, and the two ends of the connecting shaft are provided with limiting members, and a connecting frame is slidably connected to the connecting shaft, and a first elastic member is provided between one of the limiting members and the connecting frame, and a second sliding groove is provided on the connecting frame, and the number of the second sliding grooves is two, and the spacing between the two second sliding grooves close to one end of the connecting shaft is greater than the spacing between the two second sliding grooves away from one end of the connecting shaft, a slider is slidably connected in the second sliding groove, a second elastic member is provided between the slider and the connecting frame, a friction wheel is provided on one side of the slider, and a hook is rotatably connected to the side of the connecting frame away from the second connecting rope, and the hook is connected to the connecting ring; The workbench is provided with a guardrail, a deployment arm is hinged on the guardrail, and a crossbeam is provided on the deployment arm; A first sliding groove is provided on the deployment arm, a third driving member is provided on the deployment arm, a screw is provided at the output end of the third driving member, and a connecting seat is threadedly connected to the screw; The winding roller is rotatably connected to the connecting seat; The connecting seat is slidably connected to the unfolding arm through a first sliding groove, and the crossbeam is slidably connected to the connecting seat.

2. The intelligent protection platform for railway crossing construction of track-type power transmission projects according to claim 1 is characterized by: The connecting mechanism includes a first connecting platform and a second connecting platform. A first driving member is provided on the top of the first connecting platform. A first gear is provided at the output end of the first driving member. The second connecting platform is rotatably connected to the top of the first connecting platform. A second gear is provided at the bottom of the second connecting platform. The second gear is engaged with the first gear, and a rack is provided on the top of the second connecting platform.

3. The intelligent protection platform for railway crossing construction of track-based power transmission projects according to claim 2 is characterized by: A second hydraulic cylinder is provided between the unfolding arm and the guardrail, a second driving member is provided at the bottom of the workbench, a third gear is provided at the output end of the second driving member, and a roller is provided at the bottom of the workbench.

4. The intelligent protection platform for railway crossing construction of track-type power transmission projects according to claim 3 is characterized by: The first connecting rope is connected to the guardrail through the connecting piece.

5. The intelligent protection platform for railway crossing construction of track-based power transmission projects according to claim 1 is characterized by: There are multiple second connecting ropes, and the multiple second connecting ropes are distributed in a linear array between the two first connecting ropes.

6. The intelligent protection platform for railway crossing construction of track-based power transmission projects according to claim 2 is characterized by: The first connecting platform is hinged to an end of the lifting support mechanism away from the working chassis.

7. The intelligent protection platform for railway crossing construction of track-based power transmission projects according to claim 3 is characterized by: The third gear is meshed with the rack, and the workbench is movably connected to the second connecting platform via the roller.

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