Crossing vehicle for power transmission line construction

Abstract

The invention relates to the technical field of power transmission line construction equipment, in particular to a crossing vehicle for power transmission line construction, which comprises a first transport vehicle, a second transport vehicle and a crossing net assembly, and is characterized in that the first transport vehicle is provided with a first crossing frame through a first lifting arm; a second crossing frame is arranged on the second transport vehicle through a second lifting arm, and the second crossing frame can be detachably connected with the first crossing frame to form a closed crossing truss; the spanning net assembly can be connected with the first spanning frame or the second spanning frame to form a net structure covering the spanning truss; the stress adjusting mechanism is arranged in the spanning net assembly and used for adjusting the stress of the spanning net assembly. Automatic net blocking is achieved through the first transport vehicle, the second transport vehicle and the crossing net assembly, manual high-altitude and near-electricity operation is replaced, and the risks of electric shock and falling are eliminated. The first transport vehicle and the second transport vehicle work cooperatively, and the spanning frame building and net blocking efficiency is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of power transmission line construction equipment technology, and in particular to a crossing vehicle for power transmission line construction. Background Technology

[0002] During the construction and operation of power transmission lines, construction phases such as conductor erection and old line dismantling often require crossing existing obstacles such as live power lines, roads, and communication lines. Traditional crossing construction often uses steel pipe crossing frames, which require multiple workers to erect them at height.

[0003] The erection and netting of steel pipe crossing frames require manual work near electrical lines, which can easily lead to electric shock accidents due to wires touching live lines, posing a significant safety hazard. Traditional crossing frames have low modularity, cumbersome installation and dismantling procedures, and cannot meet the needs of rapid site relocation for construction, resulting in low efficiency and high construction costs per site. Summary of the Invention

[0004] This application provides a crossing vehicle for power transmission line construction, which solves the problems of cumbersome installation and dismantling procedures of traditional crossing frames in the prior art, which cannot adapt to the needs of rapid site transfer in construction scenarios and have low efficiency.

[0005] This application provides a crossing vehicle for power transmission line construction, comprising: The first transport vehicle has a first crossing frame installed on it via a first lifting arm; The second transport vehicle is equipped with a second crossing frame via a second lifting arm. The second crossing frame can be detachably connected to the first crossing frame to form a closed crossing truss. A crossover net assembly is connected to the first or second crossover frame to form a mesh structure covering the crossover truss; A stress adjustment mechanism is provided in the cross-bracing assembly for adjusting the stress of the cross-bracing assembly.

[0006] In one possible design, the first straddle includes: First crossbeam; There are two crossing bars, which are symmetrically arranged at both ends of the first crossbeam. One end of each crossing bar is rotatably connected to the end of the first crossbeam. The second strut includes: The second crossbeam has one end detachably connected to the other end of one of the crossing poles, and the other end of the second crossbeam is detachably connected to the other end of another crossing pole. The first crossbeam, the second crossbeam, and the two crossing poles can form a closed quadrilateral.

[0007] In one possible design, the cross-network components include: Slides are arranged in groups, with two slides in the same group slidingly mounted on the corresponding crossbars. The cable connects two slides in the same group; The sliding block can move along the crossbar, causing the cables to separate into a net or converge.

[0008] In one possible design, a spacing-maintaining cable is provided between two adjacent slides on the same crossbar to ensure that the cables maintain an equal spacing between adjacent cables after they are separated.

[0009] In one possible design, a guide channel is provided inside the crossbar along its length, and a traction rack is provided in the guide channel. One end of the traction rack is connected to the outermost slide. The traction rack meshes with a gear transmission, and the gear can drive the traction rack and the outermost slide to move along the crossbar by rotating.

[0010] In one possible design, the end of the crossbar is provided with a V-shaped groove and a locking rod, and the end of the second crossbeam is provided with an overlapping rod. The overlapping rod can be inserted into the V-shaped groove, and the locking rod can be locked by extending to block the V-shaped groove. The locking rod can be released by shortening to open the V-shaped groove.

[0011] In one possible design, each end of the lap rod is provided with a retaining ring to prevent the lap rod from coming out of the V-shaped groove axially.

[0012] In one possible design, the stress adjustment mechanism includes: A tension sensor is installed at the connection between the cable and the slide block to collect the tension of the cable; An outer membrane is fitted onto the surface of the cable, with both ends of the outer membrane sealed to the cable. A membrane cavity is formed between the inner wall of the outer membrane and the outer surface of the cable. The membrane cavity creates a negative pressure environment to allow the outer membrane to adhere to the outer surface of the cable, and creates a positive pressure environment to allow the outer membrane to expand with gas onto the outer surface of the cable. The cable has a gas pipe along its axial direction at its center, and the middle part of the gas pipe is connected to the membrane cavity through an air hole.

[0013] In one possible design, support structures are installed around the bodies of the first transport vehicle and the second transport vehicle, and the support structures include: The support base is rotatably mounted on the bodies of the first and second transport vehicles; The support leg has one end rotatably connected to the support base, and the other end can extend to the ground; The hydraulic rod has one end rotatably connected to the upper end of the support base and the other end rotatably connected to the middle of the support leg. The hydraulic rod adjusts the tilt angle of the support leg by extending and retracting.

[0014] In one possible design, the first and second crossbeams are both multi-segment beam structures.

[0015] In one possible design, guide rollers extending obliquely upwards are installed at the ends of the first and second crossbeams, respectively.

[0016] The beneficial effects of this application are as follows: The crossing vehicle for power transmission line construction described in this application achieves automatic net sealing through a first transport vehicle, a second transport vehicle, and crossing net components, replacing manual high-altitude and near-electric work and eliminating the risks of electric shock and falls. The coordinated operation of the first and second transport vehicles significantly improves the efficiency of crossing frame erection and net sealing.

[0017] The tracked chassis is adapted to complex terrain, and the support structure can adjust the vehicle's level, making it suitable for mountainous and gravelly terrain with a slope of ≤15°.

[0018] The spacing maintainer cable ensures that the cable is evenly deployed, and by adjusting the length of the spacing maintainer cable, it can be adapted to the needs of different density netting. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of the crossing vehicle for power transmission line construction in the construction state, provided in an embodiment of this application; Figure 2 A schematic diagram of the structure of the second transport vehicle of the power transmission line construction crossing vehicle provided in the embodiments of this application in a non-construction state; Figure 3 A schematic diagram of the structure of the first crossing frame of the crossing vehicle for power transmission line construction provided in an embodiment of this application; Figure 4 A schematic diagram of the crossing pole of the crossing vehicle for power transmission line construction provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the second crossing frame of the crossing vehicle for power transmission line construction provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the first and second crossing frames of the crossing vehicle used for power transmission line construction provided in an embodiment of this application. Figure 7 A schematic diagram of the support structure of the crossing vehicle for power transmission line construction provided in the embodiments of this application; Figure 8 This is a structural schematic diagram of the stress adjustment mechanism of the crossing vehicle for power transmission line construction provided in an embodiment of this application.

[0021] Figure label: 11. First transport vehicle; 12. Second transport vehicle; 21. First lifting arm; 22. Second lifting arm; 31. First crossing frame; 311. First crossbeam; 312. Crossing rod; 313. V-shaped slot; 314. Locking rod; 32. Second crossing frame; 321. Second crossbeam; 322. Overlapping rod; 323. Blocking ring; 4. Crossing net assembly; 41. Slide seat; 42. Cable; 43. Spacing maintaining cable; 5. Support structure; 51. Support seat; 52. Support leg; 53. Hydraulic rod; 6. Guide roller; 71. Tension sensor; 72. Outer membrane; 73. Gas pipeline. Detailed Implementation

[0022] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The following is combined with Figures 1-8 This application describes the crossing vehicle used for power transmission line construction provided in the embodiments of this application.

[0024] Reference Figure 1 As shown in the embodiment of this application, the crossing vehicle for power transmission line construction includes a first transport vehicle 11, a second transport vehicle 12, a first crossing frame 31, a second crossing frame 32, a crossing net assembly 4, and a stress adjustment mechanism.

[0025] Both the first transport vehicle 11 and the second transport vehicle 12 are tracked chassis with remote control self-propelled function, and can switch between high and low speeds to meet the relocation needs of complex terrains such as mountains and farmland.

[0026] Reference Figure 1 , Figure 2 , Figure 7As shown, four sets of support structures 5 are installed around the body of the first transport vehicle 11 and the second transport vehicle 12, respectively. Each set of support structures 5 includes a support base 51, a support leg 52, and a hydraulic rod 53. The support base 51 is rotatably mounted on the side of the vehicle body via a rotary bearing and can rotate ±90° around the vehicle body axis to allow the support leg 52 to be deployed and retracted. When in use, it rotates to the outside of the vehicle body; when retracted, it fits snugly against the edge of the vehicle body, without occupying additional transport space. The support leg 52 is made of high-strength alloy steel pipe, with one end rotatably connected to the support base 51 via a pin, and the other end welded with an anti-slip support plate. The bottom of the support plate has serrated anti-slip textures, ensuring a tight fit with the ground. One end of the hydraulic rod 53 is connected to the upper end of the support base 51 via a hinge, and the other end is hinged to the middle of the support leg 52. The hydraulic rod 53 drives the support leg 52 to rotate around the support base 51 by telescopic movement, adjusting the tilt angle of the support leg 52. This allows for an adjustment of the angle between the support leg 52 and the vehicle body from 30° to 80°, thereby lifting the vehicle body to a preset height and maintaining horizontal stability.

[0027] A dual-axis tilt sensor is installed at the bottom of the vehicle body to detect the vehicle's level status in real time.

[0028] A first lifting arm 21 is mounted on the first transport vehicle 11 via a rotary seat. The first lifting arm 21 can lift, lower, and rotate. A first crossing frame 31 is mounted on the upper end of the first lifting arm 21. A second lifting arm 22 is mounted on the second transport vehicle 12 via a rotary seat. The second lifting arm 22 can lift, lower, and rotate. A second crossing frame 32 is mounted on the upper end of the second lifting arm 22. The first lifting arm 21 and the second lifting arm 22 are hydraulic telescopic arms, capable of extension and retraction. During operation, the first lifting arm 21 and the second lifting arm 22 rotate upward around the center of the rotary seat, and then extend along their length, slowly raising the first crossing frame 31 and the second crossing frame 32 to a suitable height. After operation, the first lifting arm 21 and the second lifting arm 22 retract along their length, and then rotate downward around the center of the rotary seat, folding the lifting arms onto the corresponding transport vehicle.

[0029] The first crossing frame 31 and the second crossing frame 32 are detachably connected to form a closed crossing truss. The crossing net assembly 4 works in conjunction with the crossing frame to quickly deploy and form a mesh protective structure covering the crossing area.

[0030] Reference Figure 3 , Figure 4As shown, specifically, the first crossbeam 31 includes a first crossbeam 311 and two crossbeam rods 312. The first crossbeam 311 adopts a multi-segment aluminum alloy beam structure, with adjacent segments connected by flanges and high-strength bolts. A rotary motor and a rotary joint are respectively provided at both ends of the first crossbeam 311. The rotary joint is connected to one end of the crossbeam rod 312, and the rotary motor can drive the rotary joint, thereby causing the crossbeam rod 312 to rotate. The crossbeam rod 312 is a hollow rectangular aluminum alloy rod, and two crossbeam rods 312 are symmetrically arranged at both ends of the first crossbeam 311. One end of the crossbeam rod 312 is rotatably connected to the end of the first crossbeam 311 through a rotary joint, allowing for 90° rotation. In use, it is rotated to be perpendicular to the first crossbeam 311, forming a side beam of the crossbeam; when stored, it is rotated to be approximately parallel to the first crossbeam 311, reducing transportation volume.

[0031] The end of the crossbar 312 is provided with a V-shaped groove 313 and a locking rod 314. The V-shaped groove 313 is located at the end of the crossbar 312, opening downwards with a groove angle of 60°. The locking rod 314 is a hydraulic push rod, horizontally mounted to the lower end of the crossbar 312 via a fixing bracket. The V-shaped groove 313 has a clearance hole that allows the hydraulic push rod to pass through, with the telescopic end of the hydraulic push rod passing through the clearance hole and facing the groove of the V-shaped groove 313. The hydraulic push rod can block or open the groove of the V-shaped groove 313 by telescoping.

[0032] Reference Figure 5 As shown, the second crossbeam 32 includes a second crossbeam 321, whose structure is identical to that of the first crossbeam 311, and is a multi-segment splicing structure. Both ends of the second crossbeam 321 are equipped with overlapping rods 322, which are solid alloy rods. The outer surface of the overlapping rod 322 is adapted to the depth and bottom radius of the V-shaped groove 313, ensuring that the overlapping rod 322 can be stably inserted into the V-shaped groove 313. When the overlapping rod 322 is inserted into the V-shaped groove 313, the locking rod 314 extends, sealing the opening of the V-shaped groove 313 and locking the overlapping rod 322. When disassembling, the locking rod 314 shortens, opening the groove and releasing the overlapping rod 322. Thus, through the cooperation of the overlapping rod 322 and the V-shaped groove 313, a detachable connection between the first crossbeam 31 and the second crossbeam 32 is achieved.

[0033] In some specific embodiments, circular blocking rings 323 are welded to both ends of the overlapping rod 322. When the overlapping rod 322 is inserted into the V-shaped groove 313, the blocking rings 323 fit against the side of the crossing rod 312 to prevent the overlapping rod 322 from coming out of the V-shaped groove 313 along the axial direction, thereby further improving the connection stability.

[0034] Reference Figure 4 , Figure 6 As shown, the crossing net assembly 4 includes a slide 41, a cable 42 and a spacing maintaining cable 43, which cooperate with the crossing pole 312 to achieve automatic net sealing.

[0035] Specifically, each crossing pole 312 is equipped with multiple sliding blocks 41, the number of which is adjusted according to the required mesh density. Sliding blocks 41 on the same crossing pole 312 are paired with sliding blocks 41 on another crossing pole 312; for example, the first sliding block 41 of the left crossing pole 312 is paired with the first sliding block 41 of the right crossing pole 312. The main body of the sliding block 41 is a triangular prism-shaped alloy block with an internal groove that matches the outer contour of the crossing pole 312. A nylon slider is installed in the groove to ensure smooth sliding of the sliding block 41 along the crossing pole 312. The surface of the sliding block 41 is equipped with a hanging ring for connecting the cable 42.

[0036] A cable 42 is connected between each pair of sliding blocks 41. The cable 42 is fixed to the sliding block 41 by a pull ring. After multiple pairs of sliding blocks 41 drive multiple cables 42 to unfold, they form a mesh structure covering the crossing area, i.e., a crossing net, which can intercept tools or wires falling during construction and prevent them from touching obstacles below.

[0037] The spacing maintaining cable 43 is made of 5mm diameter polyester rope and is connected between two adjacent slide blocks 41 on the same crossing pole 312. Its length is consistent with the preset spacing of the tension cables 42. When the slide blocks 41 move along the crossing pole 312, the spacing maintaining cable 43 can ensure that the distance between adjacent slide blocks 41 is constant, thereby keeping the tension cables 42 at a uniform spacing and avoiding local slack or overlap of the crossing net.

[0038] A guide channel is provided inside the crossbar 312 along its length, and a traction rack is installed in the guide channel. One end of the traction rack is fixedly connected to the outermost slide 41 by bolts, and the other end extends to the end of the crossbar 312. A DC servo motor is installed at the end of the crossbar 312, and the output shaft of the motor is connected to a transmission gear through a coupling. The transmission gear meshes with the traction rack.

[0039] When the motor rotates forward, the transmission gear drives the traction rack to move outward along the guide channel, and the outermost slide block 41 slides outward along the crossing rod 312. At the same time, the spacing holding cable 43 drives the other slide blocks 41 to move synchronously, and the cable 42 gradually unfolds to form a crossing net. When the motor rotates in reverse, the traction rack moves inward, the slide blocks 41 gather, and the cable 42 retracts.

[0040] Reference Figure 8 As shown, the stress adjustment mechanism includes a tension sensor 71 and an outer membrane 72.

[0041] Tension sensor 71 employs a miniature ring strain gauge sensor, adapted to the diameter of the cable body. The main body of tension sensor 71 is a ring-shaped metal elastomer, with the inner ring interference-fitted to the cable body, and the mating surfaces coated with anaerobic adhesive. The outer ring of tension sensor 71 is connected to a slide bolt. Tension sensor 71 is used to collect the tension of the cable.

[0042] The outer sheath 72 is fitted onto the outer surface of the cable and is made of a three-layer composite elastic material. The inner layer is nitrile rubber, which is oil-resistant and has good sealing properties; the middle layer is an aramid fiber braided layer, which improves tear resistance; and the outer layer is polyether polyurethane, which is suitable for harsh outdoor environments. The length of the outer sheath 72 is shorter than the distance between adjacent slides to avoid interference with the slides during expansion. In its natural state, the inner diameter of the outer sheath 72 is slightly smaller than the diameter of the cable body to ensure a tight initial fit.

[0043] The two ends of the outer membrane 72 are fixed to the cable body via sealing joints. These joints are made of brass and have two sealing grooves on their inner rings. Sealing rings are installed in these grooves and are press-fitted to the outer surface of the cable body, forming the first seal. A stainless steel hose clamp is installed on the outer side of the sealing joint. Tightening the hose clamp with a torque wrench presses the ends of the outer membrane 72 against the sealing joint, forming the second seal. A sealed membrane cavity is formed between the inner wall of the outer membrane 72 and the outer surface of the cable body. The volume of this cavity dynamically changes with the expansion of the outer membrane 72, with the maximum expansion volume being 8-10 times the initial volume. A gas conduit 73 is located along the axial direction of the cable's center, and the middle of the gas conduit 73 is connected to the membrane cavity via an air vent.

[0044] The air pump and vacuum pump are installed inside the transport vehicle of the crossover vehicle and are connected to the membrane cavity through the main pipe and gas pipeline 73 to provide gas power for negative pressure adsorption or positive pressure expansion of the membrane cavity.

[0045] Before construction, start the vacuum pump and draw negative pressure into the membrane cavity through the electromagnetic proportional valve, main pipe, and gas pipeline 73. Under the action of negative pressure, the outer membrane 72 is tightly attached to the outer surface of the cable body, reducing the impact of wind resistance and wind vibration on the cable.

[0046] Tension sensor 71 continuously collects tension data of the cable body: When the monitored tension value exceeds the threshold (due to increased wind speed causing wind vibration or falling objects impacting the cable), and the cable tension rises abnormally, the vacuum pump is shut off, the electromagnetic proportional valve switches to the air pump path, and the air pump starts to charge the main pipe; the gas flows into the membrane cavity through the gas pipeline 73, and the outer membrane 72 slowly expands under positive pressure, with the maximum radial expansion diameter reaching 2-2.5 times the diameter of the cable body, reducing the gap between adjacent cables and reducing the risk of falling objects falling through the gap; at the same time, the expanded outer membrane 72 can share part of the impact load of falling objects, reducing the tension of the cable body by 10%-15%.

[0047] When the tension sensor 71 detects that the tension value gradually drops to the safety threshold (due to reduced wind vibration or removal of falling objects), the air pump stops working, the electromagnetic proportional valve switches to the vacuum pump path, the vacuum pump starts to draw negative pressure, the pressure in the membrane cavity gradually returns to negative pressure, the outer membrane 72 contracts and reattaches to the surface of the cable body, and the system returns to its initial state.

[0048] Guide rollers 6 extending obliquely upwards are respectively installed at the ends of the first crossbeam 311 and the second crossbeam 321. The guide rollers 6 are inserted into the ends of the crossbeams at a 45° angle to the axis of the crossbeams. Their function is to guide the conductor or traction rope to move along a preset path during the installation of the conductor or the removal of the old line, so as to avoid direct friction between the conductor and the end of the crossbeam and reduce the wear of the conductor insulation layer.

[0049] The working principle of the crossing vehicle used for power transmission line construction in this application: Maneuver the first transport vehicle 11 and the second transport vehicle 12 to the sides of the obstacle crossing; Rotate the support base 51 to the outside of the vehicle body, activate the hydraulic rod 53, drive the support leg 52 to unfold and support the ground, and adjust the vehicle body level by extending and retracting the hydraulic rod 53 to ensure that the two vehicle bodies are at the same level. Rotate and raise the first lifting arm 21 and the second lifting arm 22 to the preset positions respectively, so that the first lifting arm 21 and the second lifting arm 22 are at the same height; Start the rotary motors at both ends of the first crossbeam 311 to rotate the two crossbars 312 to a position perpendicular to the first crossbeam 311 and unfold the crossbars 312; The second lifting arm 22 is rotated or raised and lowered so that the overlapping rods 322 at both ends of the second crossbeam 321 are aligned with the V-shaped slots 313 at the ends of the crossing rods 312, and the overlapping rods 322 are pushed into the slots; the locking rod 314 is activated so that it extends to block the slots, and at the same time the axial movement of the overlapping rods 322 is restricted by the blocking ring 323, thus completing the connection between the first crossing frame 31 and the second crossing frame 32, forming a closed quadrilateral crossing truss.

[0050] The servo motor at the end of the crossing bar 312 is started. The motor rotates forward, driving the transmission gear to rotate. The traction rack moves outward along the guide channel, and the outermost slide block 41 slides outward along the crossing bar 312. Adjacent slide blocks 41 move synchronously under the traction of the spacing maintaining cable 43. The cable 42 between the pairs of slide blocks 41 gradually unfolds until the slide block 41 moves to the preset position and the cable 42 completely covers the width and length of the obstacle crossing. The motor is then turned off, and the net is closed.

[0051] Under the protection of the crossover net, the work of erecting conductors or dismantling old lines is carried out: the conductors or traction ropes move along the guide rollers 6 at the ends of the crossbeams to avoid friction with the crossbeams; the crossover net intercepts tools or conductors that may fall and prevents them from touching obstacles below.

[0052] After construction is completed, the servo motor is started to reverse, the rack is pulled inward, the slide 41 is brought together, and the cable 42 is retracted; The locking lever 314 is shortened, the V-shaped slot 313 is opened, the second transport vehicle 12 is moved, the overlapping lever 322 is disengaged from the slot, and the first cross-frame 31 and the second cross-frame 32 are separated. Rotate the crossbar 312 until it is parallel to the first crossbeam 311; The first lifting arm 21 and the second lifting arm 22 are lowered respectively; The hydraulic rod 53 shortens, and the support leg 52 rotates to fit the vehicle body; Control the first transport vehicle 11 and the second transport vehicle 12 to drive away from the construction site.

[0053] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A crossing vehicle for power transmission line construction, characterized in that, include: The first transport vehicle, on which a first crossing frame is installed via a first lifting arm; The second transport vehicle is equipped with a second crossing frame via a second lifting arm. The second crossing frame can be detachably connected to the first crossing frame to form a closed crossing truss. A cross-beam assembly is connected to the first cross-beam or the second cross-beam to form a mesh structure covering the cross-beam truss; A stress adjustment mechanism is provided in the cross-bracing assembly for adjusting the stress of the cross-bracing assembly.

2. The crossing vehicle for power transmission line construction according to claim 1, characterized in that, The first gantry includes: First crossbeam; There are two crossing rods, which are symmetrically arranged at both ends of the first crossbeam. One end of each crossing rod is rotatably connected to the end of the first crossbeam. The second gantry includes: The second crossbeam has one end detachably connected to the other end of one of the crossing rods, and the other end of the second crossbeam is detachably connected to the other end of the other crossing rod. The first crossbeam, the second crossbeam, and the two crossing rods can form a closed quadrilateral.

3. The crossing vehicle for power transmission line construction according to claim 2, characterized in that, The cross-network component includes: The sliding blocks are arranged in groups, with two sliding blocks in the same group respectively slidingly mounted on the corresponding crossbar; A cable connects the two slides in the same group; The slide block can move along the crossing bar, causing the cables to separate into a net or gather together.

4. The crossing vehicle for power transmission line construction according to claim 3, characterized in that, A spacing maintaining cable is provided between two adjacent slides on the same crossing pole to ensure that the spacing between the two adjacent cables remains equal after the cables are separated.

5. The crossing vehicle for power transmission line construction according to claim 4, characterized in that, The crossbar has a guide channel along its length, and a traction rack is provided in the guide channel. One end of the traction rack is connected to the outermost slide. The traction rack meshes with a gear, and the gear can drive the traction rack and the outermost slide to move along the crossbar by rotating.

6. The crossing vehicle for power transmission line construction according to claim 5, characterized in that, The end of the crossbar is provided with a V-shaped groove and a locking rod, and the end of the second crossbeam is provided with an overlapping rod. The overlapping rod can be inserted into the V-shaped groove. The locking rod can be extended to block the V-shaped groove to lock the overlapping rod. The locking rod can be shortened to open the V-shaped groove to release the overlapping rod.

7. The crossing vehicle for power transmission line construction according to claim 6, characterized in that, The two ends of the lap rod are respectively provided with blocking rings to prevent the lap rod from coming out of the V-shaped groove along the axial direction.

8. The crossing vehicle for power transmission line construction according to claim 3, characterized in that, The stress adjustment mechanism includes: A tension sensor is installed at the connection between the cable and the slide block to collect the tension of the cable; An outer membrane is fitted onto the surface of the cable, with both ends of the outer membrane sealed to the cable. A membrane cavity is formed between the inner wall of the outer membrane and the outer surface of the cable. The membrane cavity creates a negative pressure environment to allow the outer membrane to adhere to the outer surface of the cable, and creates a positive pressure environment to allow the outer membrane to expand with gas onto the outer surface of the cable. A gas pipe is provided along the axial direction of the center of the cable, and the middle part of the gas pipe is connected to the membrane cavity through an air hole. (When the tension sensor detects that the tension of the cable is too high, the air pump in the transport vehicle inflates the gas pipe through the main pipe, filling the membrane cavity with gas, expanding the outer membrane, and supporting the falling object together to prevent the cable from breaking due to excessive local tension, and also to prevent the falling object from falling through the gap between the two cables).

9. The crossing vehicle for power transmission line construction according to any one of claims 1-8, characterized in that, The first transport vehicle and the second transport vehicle are each equipped with a support structure around their respective vehicle bodies. The support structure includes: The support base is rotatably mounted on the bodies of the first transport vehicle and the second transport vehicle; A support leg, one end of which is rotatably connected to the support base, and the other end of which can extend to the ground; A hydraulic rod, one end of which is rotatably connected to the upper end of the support base, and the other end of which is rotatably connected to the middle of the support leg, wherein the hydraulic rod adjusts the tilt angle of the support leg by extending and retracting.

10. The crossing vehicle for power transmission line construction according to any one of claims 2-8, characterized in that, The first crossbeam and the second crossbeam are both multi-segment beam structures; And / or, The ends of the first crossbeam and the second crossbeam are respectively equipped with guide rollers that extend obliquely upwards.

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