Portable all-terrain modular low-voltage line crossing frame and construction method

Abstract

The invention belongs to the field of electric power engineering construction. A portable all-terrain modularized low-voltage line crossing frame is characterized by comprising a line passing roller frame, a vertical rod, a middle transition frame and a base. The wire passing roller frame is fixed at the upper end part of the vertical rod; the lower portion of the vertical rod penetrates through a guide sleeve of the middle transition frame in an inserted mode and is fixed to the guide sleeve through a pin shaft. The middle transition frame is in socket fit with the supporting column sleeve of the base through the supporting column and is fixed to the supporting column sleeve through a pin shaft. The invention has the characteristics of quick assembly, multi-terrain adaptation, safety, reliability and stable structure.

Description

Technical Field

[0001] This invention belongs to the field of power engineering construction, specifically relating to a support and protection device and a supporting construction method for low-voltage line crossing operations, which is particularly suitable for rapid line laying operations in complex terrain. Background Technology

[0002] In the construction and maintenance of low-voltage lines, crossing frames are key equipment for ensuring operational safety and preventing line damage. Traditional low-voltage line crossing frames mostly adopt a fixed structure design, which has many limitations in practical applications.

[0003] The core defects of the existing technology are as follows: 1. Low assembly efficiency: The components are bulky and have a fixed structure, requiring multiple people to work together to assemble them. A single setup usually takes more than 1 hour, which seriously slows down the construction progress.

[0004] 2. Poor terrain adaptability: It cannot flexibly adjust the height and level, and it is difficult to set up stably in complex terrains such as narrow mountains and undulating roads, thus limiting its application scenarios.

[0005] 3. Insufficient insulation reliability: Some parts use ordinary metal materials, which are prone to insulation failure in a 400V low-voltage environment, posing a safety hazard to workers.

[0006] 4. Poor structural stability: It lacks targeted fixing and adjustment mechanisms, has weak anti-overturning ability in complex terrain, and is difficult to meet construction load requirements.

[0007] A search revealed existing patents including "A Simple Insulated Crossing Frame for Uninterrupted Power Supply in Overhead Lines" and "A Low-Voltage Crossing Frame and Its Usage Method," but none of them resolved the combined problem of the aforementioned multi-dimensional defects. Therefore, there is an urgent need for a lightweight, portable, multi-terrain adaptable, safe, and reliable low-voltage line crossing frame and its construction method. Summary of the Invention

[0008] To address the problems of low assembly efficiency, poor terrain adaptability, insufficient insulation reliability, and poor structural stability of traditional low-voltage line crossing frames, the present invention aims to provide a portable all-terrain modular low-voltage line crossing frame and construction method, which features rapid assembly, multi-terrain adaptability, safety and reliability, and structural stability.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is a portable all-terrain modular low-voltage line crossing frame, characterized in that it includes a line roller frame 1, a vertical pole 2, an intermediate transition frame 3, and a base 4; the line roller frame 1 is fixed to the upper end of the vertical pole 2; the lower part of the vertical pole 2 is inserted through the guide sleeve 303 of the intermediate transition frame 3; the intermediate transition frame 3 is engaged with the support column sleeve 404 of the base 4 through a support column 309, and is fixed to the support column sleeve 404 by a pin 412; The thread guide roller frame 1 includes a high-strength support frame 103, a roller frame column 107, and a support rod 111. The high-strength support frame 103 includes a front triangle and a rear triangle. The left corner of the front triangle and the left corner of the rear triangle are fixedly connected by front and rear left connecting rods. The right corner of the front triangle and the right corner of the rear triangle are fixedly connected by front and rear right connecting rods. The front and rear ends of the front and rear right connecting rods are respectively equipped with lower horns 106, and lower thread guide rollers 105 are installed on the front and rear right connecting rods. The apex corner of the front triangle and the apex corner of the rear triangle are fixedly connected by front and rear top connecting rods. The front and rear ends of the front and rear top connecting rods are respectively equipped with... It has an upper horn 101, and an upper thread roller 102 is installed on the front and rear top connecting rods; the bottom rod of the front triangle and the bottom rod of the rear triangle are fixedly connected by multiple front and rear bottom middle connecting rods; the upper end of the roller frame column 107 is fixedly connected to the middle of the front and rear top connecting rods, the upper sleeve is provided with a column pin hole, the upper sleeve is fixedly connected to the front and rear bottom middle connecting rods located on the left side, the middle of the roller frame column 107 is provided with a pin hole, the middle of the roller frame column 107 passes through the upper sleeve, and the roller frame column 107 is fixed to the upper sleeve by the column pin shaft 112 inserted into the column pin hole; the lower end of the roller frame column 107 is inserted into the upper end of the column 2. Movable blocks 109 are fixed to the four lower sides of the roller frame column 107. An anchor rope loop 108 is provided at the lower part of each movable block 109, and a hinge seat is provided at the upper part of each movable block 109. There are three support rods 111. The lower end of the support rod 111 located on the front side is hinged to the hinge seat on the movable block 109 located on the front side by a lower pin 110, and the upper end of the support rod 111 located on the front side is hinged to the hinge seat on the bottom rod of the front tripod by an upper pin 113. The support rod 111 located on the left side... The lower end of the support rod 111 is hinged to the hinge seat on the movable block 109 on the left side by the lower pin 110, and the upper end of the support rod 111 on the left side is hinged to the hinge seat on the front and rear left connecting rod by the upper pin 113; the lower end of the support rod 111 on the rear side is hinged to the hinge seat on the movable block 109 on the rear side by the lower pin 110, and the upper end of the support rod 111 on the rear side is hinged to the hinge seat on the bottom rod of the rear tripod by the upper pin 113. The front tripod, rear tripod, front and rear left connecting rods, front and rear right connecting rods, front and rear top connecting rods, support rod 111, upper wire guide roller 102, and lower wire guide roller 105 are all coated with an insulating layer. The upright 2 includes 2-30 standard sections 201. Each standard section has a shaft head insertion hole at its upper end and a shaft head 204 at its lower end. Each standard section has a rotating hole 202 and a through pin hole 203. The shaft head 204 of the upper standard section 201 is inserted into the shaft head insertion hole of the lower standard section 201. The intermediate transition frame 3 includes an upper bearing seat 301, a rotating handle 302, a guide sleeve 303, an intermediate transition platform 306, a support column 309, a lower bearing seat 310, and a bearing 311. The bearing 311 is located (installed) inside the upper bearing seat 301 and the lower bearing seat 310. The upper bearing seat 301 is installed on top of the intermediate transition platform 306, and the lower bearing seat 310 is installed below the intermediate transition platform 306. The lower end of the guide sleeve 303 passes through the shaft hole of the bearing 311 and is connected to it. The bearing 311 is fixedly connected. The upper part of the guide sleeve 303 is provided with a rotating handle 302 in the front and rear directions. The upper end of the guide sleeve 303 is provided with an arc-shaped pin support groove. One end of the pin 304 passes through the through pin hole 203 on the standard section 201 of the upright 2 and rests on the pin support groove. There are 4 support columns 309. The upper ends of the 4 support columns 309 are fixedly connected to the four lower corners of the intermediate transition platform 306 respectively. The lower end of the support column 309 is provided with a pin hole 308. The base 4 includes a hand-cranked lifting mechanism 401, a support plate 402, a hand-cranked leveling jack 403, support column sleeves 404, a base platform 408, rotating legs 409, a rotating seat 410, and a guide rod 411. The rotating seat 410 is located above the center of the base platform 408 and is fixed to the support plate 402. The rotating seat 410 has a shaft insertion hole, the left end of the support plate 402 has a guide hole, and the right end of the support plate 402 has a bayonet. Support column sleeves 404 are fixed to the four corners of the base platform 408. The support column sleeves 404 have pin holes. The lower ends of the support columns 309 of the intermediate transition frame 3 are inserted into the support column sleeves 404 respectively and fixed by pins 412 inserted into the pin holes. Hand-cranked leveling jacks 403 are installed at the four corner notches, and the four hand-cranked leveling jacks 403 are connected to the four corresponding slewing legs 409. The hand-cranked lifting mechanism 401 is installed on the right side of the base platform 408. The hand-cranked lifting mechanism 401 is located below the intermediate transition platform 306. The hand-cranked lifting mechanism 401 is connected to the latch on the support plate 402 (the hand-cranked lifting mechanism has a latch plate, the outer end of the latch plate is inserted into the latch to lift the support plate 402, and the hand-cranked lifting mechanism can lift the support plate and the rotating seat). A guide rod 411 is fixed on the upper left end of the base platform 408. After the upper end of the guide rod 411 passes through the guide hole on the support plate 402, the upper end of the guide rod 411 is connected and fixed to the bottom of the intermediate transition platform 306 through a fixed seat.

[0010] Furthermore, the hand-cranked lifting mechanism 401 is a monkey-climbing pole (or jack monkey-climbing pole).

[0011] Furthermore, the insulating layer is made of insulating fiberglass 104.

[0012] Furthermore, the base platform 408 is provided with a handle 405 on the top, a drawer toolbox 407 on the bottom, and rollers 406 at the four corners of the bottom of the base platform 408.

[0013] The above-mentioned construction method for a portable all-terrain modular low-voltage line crossing frame is characterized by the following steps: 1. Prepare portable, all-terrain modular low-voltage line crossing frames; 2. On-site preparation and leveling with the base: (1) Transport the portable all-terrain modular low-voltage line crossing frame to the construction site and clean the ground to ensure it is flat and free of debris; (2) Unfold the slewing outrigger 409, rotate the hand-cranked leveling jack 403 to adjust the base platform 408 to be level, and ensure that there is no shaking; 3. Basic module assembly: (1) Insert the intermediate transition frame 3 into the support column sleeve 404 of the base 4 through the support column 309 and fix it with the pin 412; (2) Install the wire guide roller frame 1 above the intermediate transition frame, connect the support rod 111 and fix the lower pin 110 and the upper pin 113; 4. Lifting and raising of standard sections: (1) Insert a standard section 201 between the base 4 and the intermediate transition frame 3. The upper end passes through the guide sleeve 303 and is connected to the roller frame column 107, and the lower end is placed on the rotating seat 410. (2) Operate the hand-cranked lifting mechanism 401 to hold the pallet 402, and crank the handle of the hand-cranked lifting mechanism to raise the wire roller frame 1 and the standard section as a whole until the bottom of the standard section exceeds the intermediate transition frame, and insert the pin 304 to lock the position. (3) Repeat the raising steps, inserting a new standard section into the bottom standard section one by one, and cranking the handle of the hand-cranked lifting mechanism to lower the support plate 402 to the bottom, so that the shaft of the new standard section falls into the shaft insertion hole of the rotating seat 410; continue to crank the handle of the hand-cranked lifting mechanism to make the support plate 402 and the rotating seat 410 move the newly installed standard section upward synchronously until the bottom of the new standard section exceeds the intermediate transition frame and the pin 304 is inserted to lock the position; each time the height is raised, it does not exceed the intermediate transition plate, until the bottom of the high-strength support frame 103 exceeds the 400V line (maximum height 12 meters). 5. Rotation adjustment and final fixation: (1) Insert the rotating handle 302 into the guide sleeve 303, rotate the wire roller frame 1 and the upright 2 so that the high-strength support frame 103 covers the 400V line directly above it; (2) Tighten the four ground anchor ropes to the ground anchor rope loop 108, and check that the frame is not tilted or shaken; 6. Layout and recycling: (1) Lay the 10kV cable on the upper wire guide roller 102 and the lower wire guide roller 105, and slowly release the cable to reduce friction; (2) After the construction is completed, the modules are disassembled in reverse and the portable all-terrain modular low-voltage line crossing frame is cleaned and put into storage.

[0014] The innovative highlights of this invention: 1. Modular and detachable design: The frame can be disassembled into independent modules such as the base and standard sections, enabling rapid assembly and disassembly, greatly improving construction efficiency. It features rapid assembly and modularity.

[0015] 2. All-terrain adjustment system: Integrating a hand-cranked leveling jack, slewing outriggers, and other structures, it can flexibly adapt to complex terrains such as ordinary roads and narrow mountain areas, ensuring the horizontal stability of the frame. It features multi-terrain adaptability.

[0016] 3. Composite insulation protection: Key contact components are encased in high-strength fiberglass tubing insulation material, balancing lightweight design with excellent insulation performance, meeting the safety requirements of a 400V low-voltage environment. It features safe and reliable operation.

[0017] 4. Highly efficient and stable erection: A hand-cranked lifting mechanism enables precise height lifting, coupled with ground anchors and anchor rope reinforcement, ensuring structural stability even with a maximum height of 12 meters and a load of 150 kg. It features structural stability.

[0018] 5. Standardized construction process: Integrates all steps of transportation, leveling, assembly, raising, calibration and recycling, which is easy to operate and highly replicable.

[0019] Compared with existing low-voltage line crossing frames and construction methods, the present invention has the following advantages: 1. Significantly improved assembly efficiency: The modular design allows three people to complete the setup within 10 minutes, which is more than 80% more efficient than traditional equipment.

[0020] 2. Significantly enhanced terrain adaptability: With slewing outriggers and leveling jacks, it can flexibly adapt to complex terrains such as ordinary roads and narrow mountain areas, breaking through the limitations of traditional equipment scenarios.

[0021] 3. Enhanced insulation safety: The full-coverage design of composite insulation materials ensures no insulation failure under 400V low-voltage conditions, reducing operational safety risks by 90%.

[0022] 4. Structural stability meets standards: The design features a maximum height of 12 meters, a load-bearing capacity of 150 kg, and a netting width of 2 meters. Combined with a ground anchor fixing system, it has strong anti-overturning ability and meets the construction load requirements.

[0023] 5. Reduced overall costs: Lightweight modular design reduces transportation and labor costs, aging-resistant materials extend equipment lifespan, and overall construction costs are reduced by more than 30%. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the wire guide roller frame of the present invention.

[0026] Figure 3 This is a schematic diagram of the intermediate transition frame and base of the present invention.

[0027] Figure 4 This is a schematic diagram of the intermediate transition frame of the present invention.

[0028] Figure 5 This is a schematic diagram of the structure of the base of the present invention.

[0029] Figure 6 This is a schematic diagram of the structure of the standard section of this invention.

[0030] The numbers in the diagram are: wire guide roller frame (1), upright (2), intermediate transition frame (3), and base (4); Upper horn (101), upper wire guide roller (102), high-strength support frame (103), insulated fiberglass (104), lower wire guide roller (105), lower horn (106), roller frame column (107), ground anchor rope ring (108), movable block (109), lower pin (110), support rod (111), column pin (112), upper pin (113); Standard section (201), rotating hole (202), through pin hole (203), shaft head (204); Upper bearing housing (301), rotating handle (302), guide sleeve (303), pin (304), bearing cover (305), intermediate transition platform (306), locking nut (307), pin hole (308), support column (309), lower bearing housing (310), bearing (311); Hand-cranked lifting mechanism (401), pallet (402), hand-cranked leveling jack (403), support column sleeve (404), handle (405), roller (406), drawer toolbox (407), base platform (408), slewing support leg (409), rotating seat (410), guide rod (411), pin (412). Detailed Implementation

[0031] like Figure 1-6 As shown, a portable all-terrain modular low-voltage line crossing frame includes a line roller frame 1, a pole 2, an intermediate transition frame 3, and a base 4; the line roller frame 1 is fixed to the upper end of the pole 2; the lower part of the pole 2 is inserted through the guide sleeve 303 of the intermediate transition frame 3; the intermediate transition frame 3 is engaged with the support column sleeve 404 of the base 4 through a support column 309, and is fixed to the support column sleeve 404 by a pin 412; The thread guide roller frame 1 includes a high-strength support frame 103, a roller frame column 107, and a support rod 111. The high-strength support frame 103 includes a front triangle and a rear triangle. The left corner of the front triangle and the left corner of the rear triangle are fixedly connected by front and rear left connecting rods. The right corner of the front triangle and the right corner of the rear triangle are fixedly connected by front and rear right connecting rods. The front and rear ends of the front and rear right connecting rods are respectively equipped with lower horns 106, and the lower thread guide roller 105 is installed on the front and rear right connecting rods. The apex of the front triangle and the apex of the rear triangle are fixedly connected by front and rear top connecting rods. The front and rear ends of the front and rear top connecting rods are respectively equipped with upper horns 101, and the upper thread guide roller 102 is installed on the front and rear top connecting rods. The bottom rod of the front triangle and the bottom rod of the rear triangle are fixedly connected by multiple front and rear bottom connecting rods (the multiple rods are 3-6). Figure 2 (4 rods in the middle); the upper end of the roller frame column 107 is fixedly connected to the middle of the front and rear top connecting rods. The upper sleeve is provided with a column pin hole. The upper sleeve is fixedly connected to the front and rear bottom connecting rods located on the left side. The middle of the roller frame column 107 is provided with a pin hole. The middle of the roller frame column 107 passes through the upper sleeve, and the roller frame column 107 is fixed to the upper sleeve by inserting the column pin shaft 112 into the column pin hole. The lower end of the roller frame column 107 is inserted into the upper end of the column 2. Movable blocks 109 are fixed to the four sides of the lower part of the roller frame column 107. The lower part of the movable block 109 is provided with a ground anchor rope buckle 108, and the upper part of the movable block 109 is provided with a hinge seat (with a pin hole). There are 3 support rods 111. The lower end of the support rod 111 located on the front side is hinged to the hinge seat on the movable block 109 located on the front side by the lower pin 110, and the upper end of the support rod 111 located on the front side is hinged to the hinge seat on the bottom rod of the front tripod by the upper pin 113. The lower end of the support rod 111 on the left side is hinged to the hinge seat on the movable block 109 on the left side by the lower pin 110, and the upper end of the support rod 111 on the left side is hinged to the hinge seat on the front and rear left connecting rods by the upper pin 113; the lower end of the support rod 111 on the rear side is hinged to the hinge seat on the movable block 109 on the rear side by the lower pin 110, and the upper end of the support rod 111 on the rear side is hinged to the hinge seat on the bottom rod of the rear tripod by the upper pin 113. The front tripod, rear tripod, front and rear left connecting rods, front and rear right connecting rods, front and rear top connecting rods, support rod 111, upper wire guide roller 102, and lower wire guide roller 105 are all covered with an insulating layer (the insulating material is existing, such as insulating fiberglass); the insulating layer is insulating fiberglass 104. The upper left rod of the front tripod and the upper left rod of the rear tripod are fixedly connected by a front and rear left center connecting rod. Figure 2 (There is one rod in the middle), the upper right rod of the front tripod and the upper right rod of the rear tripod are fixedly connected by the front and rear right middle connecting rods. Figure 2 There are two in the middle, and their function is to strengthen the stability of the roller frame 1; The upright 2 includes 2-30 standard sections 201. Each standard section has a shaft head insertion hole at its upper end and a shaft head 204 at its lower end. Each standard section has a rotating hole 202 and a through pin hole 203. The shaft head 204 of the upper standard section 201 is inserted into the shaft head insertion hole of the lower standard section 201. The intermediate transition frame 3 includes an upper bearing seat 301, a rotating handle 302, a guide sleeve 303, an intermediate transition platform 306, a support column 309, a lower bearing seat 310, and a bearing 311. The bearing 311 is located within the upper bearing seat 301 and the lower bearing seat 310. The upper bearing seat 301 is mounted on top of the intermediate transition platform 306, and the lower bearing seat 310 is mounted below the intermediate transition platform 306. The lower end of the guide sleeve 303 passes through the shaft hole of the bearing 311 and is fixedly connected to the bearing 311. The fixing can be achieved using a bearing cover 305 and a locking nut 307. The bearing cover 305 and the locking nut 307 have a through hole in the middle for the standard section 201 to pass through. The bearing cover 305 is located within the upper bearing seat. Above 301, the bearing cover 305 is fixed to the guide sleeve 303. The lower end of the guide sleeve 303 is provided with external threads, and the locking nut 307 is screwed onto the lower end of the guide sleeve 303. The bearing rotates to drive the guide sleeve, that is, the guide sleeve can rotate. The upper part of the guide sleeve 303 is provided with a rotating handle 302 in the front and rear directions. The upper end of the guide sleeve 303 is provided with an arc-shaped pin support groove. One end of the pin 304 passes through the through pin hole 203 on the standard section 201 of the upright 2 and rests on the pin support groove. There are 4 support columns 309. The upper ends of the 4 support columns 309 are fixedly connected to the lower four corners of the intermediate transition platform 306 respectively. The lower end of the support column 309 is provided with a pin hole 308. The base 4 includes a hand-cranked lifting mechanism 401, a support plate 402, a hand-cranked leveling jack 403, support column sleeves 404, a base platform 408, rotating legs 409, a rotating seat 410, and a guide rod 411. The rotating seat 410 is located above the center of the base platform 408 and is fixed to the support plate 402. The rotating seat 410 has a shaft insertion hole, the left end of the support plate 402 has a guide hole, and the right end of the support plate 402 has a bayonet. Support column sleeves 404 are fixed to the four corners of the base platform 408. The support column sleeves 404 have pin holes. The lower ends of the support columns 309 of the intermediate transition frame 3 are inserted into the support column sleeves 404 respectively and fixed by pins 412 inserted into the pin holes. Hand-cranked leveling jacks 403 are installed at the four corner notches, and the four hand-cranked leveling jacks 403 are connected to the four corresponding slewing legs 409. The hand-cranked lifting mechanism 401 is installed on the right side of the base platform 408. The hand-cranked lifting mechanism 401 is located below the intermediate transition platform 306. The hand-cranked lifting mechanism 401 is connected to the latch on the support plate 402 (the hand-cranked lifting mechanism has a latch plate, the outer end of the latch plate is inserted into the latch to lift the support plate 402, and the hand-cranked lifting mechanism can lift the support plate and the rotating seat). A guide rod 411 is fixed on the upper left end of the base platform 408. After the upper end of the guide rod 411 passes through the guide hole on the support plate 402, the upper end of the guide rod 411 is connected and fixed to the bottom of the intermediate transition platform 306 through a fixed seat.

[0032] The base platform 408 is provided with a handle 405 on the top, a drawer toolbox 407 on the bottom, and rollers 406 at the four corners of the bottom.

[0033] This invention, according to its function (features), consists of five core parts: a modular main structure, a terrain adjustment system, an insulation protection system, a stabilization and fixing system, and a lifting drive system. 1. Modular main structure, including; Base 4, standard section 201, intermediate transition frame 3, wire guide roller frame 1, support rod 111; Structure and connection: Base 4 is a non-slip plate structure with reserved ground anchor fixing holes; Standard section 201 is made of hollow composite insulation material, with uniform height of each section, and is stacked by plugging; Intermediate transition frame 3 is fitted with support column 309 and support column sleeve 404 of base 4 through a socket joint, and is fixed to support column sleeve 404 with pin 412; Wire guide roller frame 1 is fixed to the upper end of upright 2 and reinforced by support rod 111; Wire guide roller frame 1 is located above intermediate transition frame 3.

[0034] Function: Enables modular splicing of the frame to meet the requirements of height adjustment (maximum 12 meters) and netting width (maximum 2 meters).

[0035] 2. Composition of the terrain adjustment system: 409 slewing outriggers, 403 hand-cranked leveling jacks, 408 base platform.

[0036] Structure and Connection: Four slewing legs 409 can be rotated out from the base 4, and a hand-cranked leveling jack 403 is installed at the end of the slewing legs. The base platform 408 is a horizontal bearing surface.

[0037] Function: By adjusting the angle of the slewing outriggers and the height of the jacks, the base can be leveled in complex terrain to ensure that the frame does not wobble.

[0038] 3. Composition of the insulation protection system: The high-strength support frame 103 (front tripod, rear tripod), the upper wire guide roller 102, the lower wire guide roller 105, and the standard section 201 are all coated with an insulating layer.

[0039] Structure and Connection: Insulated fiberglass 104 covers the surface of all pipes that may come into contact with 400V live wires; the upper wire guide roller 102 and the lower wire guide roller 105 are installed on the wire guide roller frame 1, and their surfaces have insulating protective properties.

[0040] Function: Ensures insulation reliability under 400V low-voltage conditions, avoiding line wear and the risk of electric shock.

[0041] 4. Composition of the stable fixing system: 108 ground anchor rope loops, standard ground anchor sections, and anchor ropes.

[0042] Structure and Connection: The ground anchor rope loop 108 is set on the line guide roller frame 1, the ground anchor standard section is fixed to the ground by piling, and the anchor rope connects the ground anchor rope loop and the ground anchor standard section.

[0043] Function: Enhances the frame's resistance to overturning and ensures structural stability under a maximum load of 150kg.

[0044] 5. Composition of the lifting drive system: The components include a hand-cranked lifting mechanism 401, a support plate 402, a rotating seat 410, a guide sleeve 303, and a pin 304. Structure and connection: The hand-cranked lifting mechanism 401 is snap-fitted to the support plate 402. The support plate 402 supports the rotating seat 410. The lower end of the standard section 201 is placed inside the rotating seat 410, and the upper end passes through the guide sleeve 303 and connects to the roller frame column 107. The guide sleeve 303 has a snap-fit ​​position for fixing the pin 304.

[0045] Function: Enables precise raising and positioning of the frame, preventing accidental descent during the lifting process.

[0046] Dynamic working process: 1. After the equipment is transported to the construction site, unfold the slewing outriggers 409 and adjust the hand-cranked leveling jacks 403 to make the base platform 408 level.

[0047] 2. Assemble the intermediate transition frame 3 and the base 4, fix the support rod 111, install the line guide roller frame 1 and connect the ground anchor rope.

[0048] 3. Insert standard section 201, lift the wire guide roller frame 1 and standard section 201 by hand-cranked lifting mechanism 401, and fix them by inserting pin 304.

[0049] 4. Repeatedly add standard section 201 and raise it until the line roller frame 1 exceeds the protected line.

[0050] Adjust the angle of the line guide roller frame 1 by rotating the handle 302 to cover the 400V line, and tighten the anchor rope to complete the installation.

[0051] A construction method for a portable, all-terrain modular low-voltage line crossing frame includes the following steps: 1. Prepare portable, all-terrain modular low-voltage line crossing frames; 2. On-site preparation and leveling with the base: (1) Transport the portable all-terrain modular low-voltage line crossing frame to the construction site and clean the ground to ensure it is flat and free of debris; (2) Unfold the slewing outrigger 409, rotate the hand-cranked leveling jack 403 to adjust the base platform 408 to be level, and ensure that there is no shaking; 3. Basic module assembly: (1) Insert the intermediate transition frame 3 into the support column sleeve 404 of the base 4 through the support column 309 and fix it with the pin 412; (2) Install the wire guide roller frame 1 above the intermediate transition frame, connect the support rod 111 and fix the lower pin 110 and the upper pin 113; 4. Lifting and raising of standard sections: (1) Insert a standard section 201 between the base 4 and the intermediate transition frame 3. The upper end passes through the guide sleeve 303 and is connected to the roller frame column 107, and the lower end is placed on the rotating seat 410. (2) Operate the hand-cranked lifting mechanism 401 to hold the pallet 402, and crank the handle of the hand-cranked lifting mechanism to raise the wire roller frame 1 and the standard section as a whole until the bottom of the standard section exceeds the intermediate transition frame, and insert the pin 304 to lock the position. (3) Repeat the raising steps, inserting a new standard section into the bottom standard section one by one (after the support plate 402 is lowered, insert a new standard section). Crank the handle of the hand-cranked lifting mechanism to lower the support plate 402 to the bottom, and the shaft of the new standard section falls into the shaft insertion hole of the rotating seat 410. Continue to crank the handle of the hand-cranked lifting mechanism to make the support plate 402 and the rotating seat 410 move the newly installed standard section upward synchronously until the bottom of the new standard section exceeds the intermediate transition frame and the pin 304 is inserted to lock the position. Each time the height is raised, it does not exceed the intermediate transition plate until the bottom of the high-strength support frame 103 exceeds the 400V line (maximum height 12 meters). 5. Rotation adjustment and final fixation: (1) Insert the rotating handle 302 into the guide sleeve 303, rotate the wire roller frame 1 and the upright 2 so that the high-strength support frame 103 covers the 400V line directly above it; (2) Tighten the four ground anchor ropes to the ground anchor rope loop 108, and check that the frame is not tilted or shaken; 6. Layout and recycling: (1) Lay the 10kV cable on the upper wire guide roller 102 and the lower wire guide roller 105, and slowly release the cable to reduce friction; (2) After the construction is completed, the modules are disassembled in reverse and the portable all-terrain modular low-voltage line crossing frame is cleaned and put into storage.

[0052] Alternative solution: 1. Material substitution: The hollow composite insulation material of standard section 201 can be replaced with carbon fiber reinforced composite material, further reducing the weight by 10% while improving the structural strength.

[0053] 2. Alternative adjustment method: The 403 hand-cranked leveling jack can be replaced with an electric hydraulic adjustment structure to achieve automated level calibration and adapt to the needs of adjusting a larger area of ​​terrain.

[0054] 3. Lifting drive replacement: The hand-cranked lifting mechanism 401 can be replaced by an electric winch drive, which improves the height adjustment speed and reduces the intensity of manual operation.

[0055] 4. Folding Design Alternative: The base 4 and the swivel legs 409 can adopt a hinged folding structure, which can be folded up during transportation, making it convenient for transfer in mountainous areas or narrow spaces.

[0056] 5. Replacement of insulation materials: Insulating fiberglass 104 can be replaced with ceramic matrix composite materials to improve high temperature resistance and wear resistance, and adapt to more complex working environments.

Claims

1. A portable, all-terrain modular low-voltage line crossing frame, characterized in that... Includes a wire guide roller frame (1), a vertical pole (2), an intermediate transition frame (3), and a base (4); the wire guide roller frame (1) is fixed to the upper end of the vertical pole (2); the lower part of the vertical pole (2) is inserted through the guide sleeve (303) of the intermediate transition frame (3); the intermediate transition frame (3) is engaged with the support column sleeve (404) of the base (4) through the support column (309), and is fixed to the support column sleeve (404) with a pin (412); The thread guide roller frame (1) includes a high-strength support frame (103), a roller frame column (107), and a support rod (111); the high-strength support frame (103) includes a front triangle and a rear triangle; the left corner of the front triangle and the left corner of the rear triangle are fixedly connected by front and rear left connecting rods; the right corner of the front triangle and the right corner of the rear triangle are fixedly connected by front and rear right connecting rods, and the front and rear ends of the front and rear right connecting rods are respectively equipped with lower horns (106), and the lower thread guide roller (105) is installed on the front and rear right connecting rods; the apex corner of the front triangle and the apex corner of the rear triangle are fixedly connected by front and rear top connecting rods, and the front and rear ends of the front and rear top connecting rods are respectively equipped with upper... The ram's horn (101) has an upper thread roller (102) installed on the front and rear top connecting rods; the bottom rod of the front tripod and the bottom rod of the rear tripod are fixedly connected by multiple front and rear bottom connecting rods; the upper end of the roller frame column (107) is fixedly connected to the middle of the front and rear top connecting rods; the upper sleeve has a column pin hole; the upper sleeve is fixedly connected to the front and rear bottom connecting rods located on the left side; the middle of the roller frame column (107) has a pin hole; the middle of the roller frame column (107) passes through the upper sleeve; and the roller frame column (107) is fixed to the upper sleeve by inserting the column pin (112) into the column pin hole; the lower end of the roller frame column (107) is inserted into the upper end of the column (2). Movable blocks (109) are fixed to the four sides of the lower part of the roller frame column (107). Anchor rope loops (108) are provided at the lower part of the movable blocks (109), and hinge seats are provided at the upper part of the movable blocks (109). There are three support rods (111). The lower end of the support rod (111) located on the front side is hinged to the hinge seat on the movable block (109) located on the front side by the lower pin (110), and the upper end of the support rod (111) located on the front side is hinged to the hinge seat on the bottom rod of the front tripod by the upper pin (113). The support rod (111) located on the left side is hinged to the hinge seat on the bottom rod of the front tripod. The lower end of the side support rod (111) is hinged to the hinge seat on the movable block (109) on the left side by the lower pin (110), and the upper end of the left support rod (111) is hinged to the hinge seat on the front and rear left connecting rod by the upper pin (113); the lower end of the rear support rod (111) is hinged to the hinge seat on the movable block (109) on the rear side by the lower pin (110), and the upper end of the rear support rod (111) is hinged to the hinge seat on the bottom rod of the rear tripod by the upper pin (113). The front tripod, rear tripod, front and rear left connecting rods, front and rear right connecting rods, front and rear top connecting rods, support rod (111), upper wire guide roller (102), and lower wire guide roller (105) are all covered with an insulating layer. The upright (2) includes 2-30 standard sections (201), each standard section has a shaft head insertion hole at the upper end and a shaft head (204) at the lower end. Each standard section has a rotating hole (202) and a through pin hole (203). The shaft head (204) of the upper standard section (201) is inserted into the shaft head insertion hole of the lower standard section (201). The intermediate transition frame (3) includes an upper bearing seat (301), a rotating handle (302), a guide sleeve (303), an intermediate transition platform (306), a support column (309), a lower bearing seat (310), and a bearing (311). The bearing (311) is located inside the upper bearing seat (301) and the lower bearing seat (310). The upper bearing seat (301) is installed on the upper part of the intermediate transition platform (306), and the lower bearing seat (310) is installed on the lower part of the intermediate transition platform (306). The lower end of the guide sleeve (303) passes through the shaft hole of the bearing (311). It is fixedly connected to the bearing (311). The upper part of the guide sleeve (303) is provided with a rotating handle (302) in the front and rear directions. The upper end of the guide sleeve (303) is provided with an arc-shaped pin resting groove. One end of the pin (304) passes through the through pin hole (203) on the standard section (201) of the upright (2) and rests on the pin resting groove. There are 4 support columns (309). The upper ends of the 4 support columns (309) are fixedly connected to the four corners of the lower part of the intermediate transition platform (306). The lower end of the support column (309) is provided with a pin hole (308). The base (4) includes a hand-cranked lifting mechanism (401), a support plate (402), a hand-cranked leveling jack (403), a support column sleeve (404), a base platform (408), a slewing leg (409), a rotating seat (410), and a guide rod (411). The rotating seat (410) is located above the middle of the base platform (408), and is fixed on the support plate (402). The rotating seat (410) has a shaft insertion hole, the left end of the support plate (402) has a guide hole, and the right end of the support plate (402) has a bayonet. Support column sleeves (404) are fixed on the four corners of the base platform (408). The support column sleeves (404) have pin holes, and the lower ends of the support columns (309) of the intermediate transition frame (3) are inserted into the support column sleeves respectively. In 404), a pin (412) is inserted into the pin hole and fixed; a hand-cranked leveling jack (403) is installed at the four corner notches of the base platform (408), and the four hand-cranked leveling jacks (403) are connected to the four corresponding slewing legs (409); a hand-cranked lifting mechanism (401) is installed on the right side of the base platform (408), and the hand-cranked lifting mechanism (401) is located below the intermediate transition platform (306). The hand-cranked lifting mechanism (401) is connected to the buckle on the support plate (402); a guide rod (411) is fixed on the upper left end of the base platform (408). After the upper end of the guide rod (411) passes through the guide hole on the support plate (402), the upper end of the guide rod (411) is connected and fixed to the bottom of the intermediate transition platform (306) through the fixed seat.

2. The portable all-terrain modular low-voltage line crossing frame according to claim 1, characterized in that, The insulating layer is made of insulating fiberglass (104).

3. The portable all-terrain modular low-voltage line crossing frame according to claim 1, characterized in that, The base platform (408) is provided with a handle (405) on the top, a drawer toolbox (407) is provided on the bottom of the base platform (408), and rollers (406) are provided at the four corners of the bottom of the base platform (408).

4. A construction method for a portable, all-terrain modular low-voltage line crossing frame, characterized in that... Includes the following steps: 1) Prepare portable, all-terrain modular low-voltage line crossing frames; 2) On-site preparation and leveling of the base: (1) Transport the portable all-terrain modular low-voltage line crossing frame to the construction site and clean the ground to ensure it is flat and free of debris; (2) Unfold the slewing outriggers (409), rotate the hand-cranked leveling jack (403) to adjust the base platform (408) to be level, and ensure that there is no shaking; 3) Basic module assembly: (1) Insert the intermediate transition frame (3) into the support column sleeve (404) of the base (4) through the support column (309) and fix it with the pin (412); (2) Install the line guide roller frame (1) above the intermediate transition frame, connect the support rod (111) and fix the lower pin (110) and the upper pin (113). 4) Lifting and raising of standard sections: (1) Insert a standard section (201) between the base (4) and the intermediate transition frame (3), with the upper end passing through the guide sleeve (303) and connected to the roller frame column (107), and the lower end placed on the rotating seat (410). (2) Operate the hand-cranked lifting mechanism (401) to hold the tray (402), and crank the handle of the hand-cranked lifting mechanism to raise the wire roller frame (1) and the standard section as a whole until the bottom of the standard section exceeds the intermediate transition frame, and insert the pin (304) to lock the position; (3) Repeat the raising steps, inserting a new standard section into the standard section at the bottom one by one, and cranking the handle of the hand-crank lifting mechanism to lower the support plate (402) to the bottom. The shaft of the new standard section falls into the shaft insertion hole of the rotating seat (410). Continue to crank the handle of the hand-crank lifting mechanism to make the support plate (402) and the rotating seat (410) move the newly installed standard section upward synchronously until the bottom of the new standard section exceeds the intermediate transition frame and the pin (304) is inserted to lock the position. Each time the height is raised, it does not exceed the intermediate transition plate until the bottom of the high-strength support frame (103) exceeds the 400V line. 5) Rotation adjustment and final fixation: (1) Insert the rotating handle (302) into the guide sleeve (303), rotate the wire roller frame (1) and the upright (2) so that the high-strength support frame (103) covers the 400V line directly above; (2) Tighten the four ground anchor ropes to the ground anchor rope loop (108) and check that the frame is not tilted or shaken; 6) Layout and recycling: (1) Lay the 10kV cable on the upper cable roller (102) and the lower cable roller (105) and slowly release the cable to reduce friction; (2) After the construction is completed, the modules are disassembled in reverse and the portable all-terrain modular low-voltage line crossing frame is cleaned and put into storage.

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