Folding cross beam mechanism and mobile power transmission line crossing stringing vehicle

Abstract

The invention discloses a folding cross beam mechanism and a mobile power transmission line crossing stringing vehicle, and belongs to the technical field of crossing frames. A folding cross beam mechanism comprises an installation arm, the installation arm is provided with a bearing end, two carrying assemblies which are in central symmetry along the installation arm are arranged on the side walls of the two sides of the bearing end in a foldable mode, the two carrying assemblies jointly form an erecting platform, and the erecting platform is used for providing an erecting carrier for construction of a blocking structure. According to the folding cross beam mechanism, through the arrangement of the carrying assembly, during crossing construction, the two sides of the bearing end of the mounting arm are rapidly unfolded, a stable erecting platform is formed, in cooperation with height adjustment of the hydraulic telescopic mechanical arm, the time and labor cost needed for building and dismantling a traditional moso bamboo crossing frame are reduced, and the construction efficiency is improved. Therefore, the construction efficiency of the net blocking structure is obviously improved.

Description

Technical Field

[0001] The invention relates to the technical field of crossing frames, in particular to a folding crossbeam mechanism and a mobile transmission line crossing overhead wire vehicle. Background Art

[0002] In recent years, with the development of power grid construction and the acceleration of urban construction, important crossings such as high-speed railways, highways, and high-level voltage lines are particularly prominent. During the crossing construction process, it is very difficult to handle power outage procedures and the power outage time is short, and there are many monitoring requirements. Therefore, non-power-off crossing construction has become the main trend to solve the difficulty of the above crossing construction.

[0003] In actual construction, bamboo spanning frames are often used for construction. Traditional bamboo spanning frames can only be erected at fixed locations. The erection and dismantling process is cumbersome, the construction period is long, the erection process requires a lot of manpower, and the construction efficiency is low. Summary of the invention

[0004] The invention provides a folding crossbeam mechanism and a mobile transmission line crossing overhead wire vehicle, which can overcome certain defects of the prior art.

[0005] A folding beam mechanism according to the present invention includes a beam mechanism body, the beam mechanism body includes a mounting arm, the mounting arm has a load-bearing end, and two foldable side walls on both sides of the load-bearing end are provided with two carrying components symmetrical along the center of the mounting arm. The two carrying components together form an erection platform, and the erection platform is used to provide an erection carrier for the construction of the sealing net structure.

[0006] Preferably, the mounting assembly includes a crossbeam and a support rod hinged to the side wall of the mounting arm, the crossbeam is located at the top of the side wall of the load-bearing end, and the support rod is used to support the crossbeam; so that during construction, the crossbeam is rotated to a horizontal level, and the support rod is rotated to the second pin hole, and the position is limited by the latch; when not in use, the crossbeam and the support rod are rotated downward, and the support rod and the crossbeam are limited by the latch being plugged into the first pin hole, such as Figure 6 In the state shown, it can be easily retracted and extended with the help of manpower.

[0007] The crossbeam is arranged in an inverted U shape, and has an installation cavity opening downward. A reinforcing plate cooperating with the support rod is arranged at the side wall of the installation cavity. A first pin hole and a second pin hole are formed at the side walls at both ends of the reinforcing plate. The first pin hole and the support rod and the reinforcing plate are provided with through holes cooperating with the first pin hole and the second pin hole at corresponding positions. The support rod is detachably connected to the first pin hole or the second pin hole by a pin.

[0008] By arranging the reinforcing plate in the installation cavity, the strength and rigidity of the crossbeam are further enhanced, thereby ensuring the stability of the overall structure.

[0009] Preferably, the installation cavity is formed with an upward through opening away from one end of the installation arm, a rotating shaft is provided at the opening, a protective member is provided at the rotating shaft, a docking hole is formed at the corresponding position of the protective member and the side wall of the installation cavity, a third pin hole and a fourth pin hole are formed at the opening, the third pin hole is located directly below the rotating shaft, the fourth pin hole is rotated from the third pin hole along the axis of the rotating shaft, and the protective member is detachably connected to the third pin hole or the fourth pin hole by a pin.

[0010] By means of the above structure, the protective member is rotated to Figure 2 or Figure 3 The position shown in the figure is then limited by inserting a pin into the fourth pin hole and the docking hole to form a limit for the protective part, so as to form a block for both ends of the beam to prevent the load-bearing cable from falling when the crossing construction is laid out.

[0011] Preferably, a plurality of construction holes are formed at the installation cavity, and a detachable hanger is provided at the construction hole near the opening of the installation cavity. The hanger has two installation holes for installing the first pulley and the second pulley. An anti-pullback mechanism is detachably provided at the corresponding positions of the crossbeam and the hanger. The anti-pullback mechanism is used to form a one-way limit on the load-bearing cable when the first pulley and the second pulley are releasing the line.

[0012] Through the above structure, construction workers can install the equipment according to usage requirements, thereby improving the application scope of the mechanism.

[0013] Preferably, two pull wire hanging points are provided on the side wall of the installation arm along the length direction of the beam, and pull wire hanging points for installation of the pull wire are formed at both end portions of the pull wire hanging points along the length direction of the beam.

[0014] Through the above structure, when the hydraulic telescopic mechanical arm is in a vertical state, Figure 8 As shown, the installation arm and the hydraulic telescopic mechanical arm can be supported by tightening the cable at the cable hanging point.

[0015] Preferably, a bearing plate is provided on the side wall of the mounting arm along the length direction of the beam, a pedal is detachably provided on the bearing plate, a plurality of connecting members are provided on the bottom wall of the pedal, and the connecting members are installed into corresponding construction holes through latches.

[0016] The above structure makes it convenient for construction workers to stand on the bearing plate to operate during spanning construction, and the detachable setting can also be installed and disassembled according to needs.

[0017] Preferably, a sling for cooperating with the sling is provided at the mounting arm, and the sling is located below the bearing plate.

[0018] Through the above structure, when the crossing line construction is carried out, the tools on the ground can be lifted to the crossbeam, which is convenient for construction and improves the practicality of the device.

[0019] Preferably, two parallel guide members are provided at the top wall of the load-bearing end, and a docking area is formed between the two guide members; The guide member comprises a fixed seat arranged at the top wall of the bearing end, and a roller is rotatably arranged at the fixed seat; Two first mounting seats are arranged parallel to the length direction of the beam at the top of the beam. One end of the two first mounting seats is abutted to the through opening, and the other end extends to the docking area. The first mounting seats have multiple continuously arranged mounting grooves, and the first insulating rollers are rotatably arranged in the mounting grooves.

[0020] By extending the other ends of the two first mounting seats into the docking area, the first insulating rollers at the two first mounting seats can extend into the docking area, which preferably avoids the load-bearing cable from being stuck between the guide member and the first mounting seat.

[0021] Preferably, a second mounting seat is provided at the center of the top wall of the protective member along the length direction of the cross beam, a second insulating roller is rotatably provided at the second mounting seat, and the second mounting seat is located between the two first mounting seats.

[0022] The above structure ensures that when the load-bearing cable is at the edge of the crossbeam, the second insulating roller can also provide rolling contact for the load-bearing cable to avoid wear of the load-bearing cable.

[0023] A mobile transmission line crossing wire-string vehicle comprises a transport vehicle and a hydraulic telescopic mechanical arm hingedly arranged on the transport vehicle, wherein the top of the hydraulic telescopic mechanical arm is provided with any one of the above-mentioned folding crossbeam mechanisms.

[0024] The beneficial effects of the present invention are as follows: 1. Through the setting of the carrying components, when carrying out the span construction, the two sides of the load-bearing end of the installation arm can be quickly unfolded to form a stable erection platform, and the height adjustment of the hydraulic telescopic mechanical arm can be coordinated to reduce the time and labor cost required for the construction and dismantling of the traditional bamboo spanning frame, thereby significantly improving the efficiency of the closure structure construction; 2. By setting the protective piece, the protective piece is rotated upward to form an obtuse angle with the beam, and then the pin is inserted into the fourth pin hole and the docking hole to limit the protective piece, so as to form a block on both ends of the beam, thereby avoiding the load-bearing cable from falling when laying out the line during the crossing construction; 3. By setting the guide member and the first insulating roller, the first insulating rollers at the two first mounting seats can extend into the docking area, which better avoids the load-bearing cable from being stuck between the guide member and the first mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The figure is a schematic diagram of the overall structure of a mobile transmission line crossing overhead wire vehicle.

[0026] Figure 2 The figure is a schematic diagram of the overall structure of a folding beam mechanism.

[0027] Figure 3 The figure is a schematic diagram of a top view of a folding beam mechanism.

[0028] Figure 4 The figure is a schematic diagram of the installation structure of the first insulating roller of a folding beam mechanism.

[0029] Figure 5 The figure is a schematic diagram of the protective component structure of a folding beam mechanism.

[0030] Figure 6 This is a schematic diagram of a pedal installation of a folding beam mechanism.

[0031] Figure 7 The figure is a schematic diagram of the folded structure of a folding beam mechanism.

[0032] Figure 8 The figure is a schematic diagram of the installation of the anti-pullback mechanism body of a folding beam mechanism.

[0033] Fig. 9 The figure is a schematic diagram of the overall structure of an anti-pullback mechanism.

[0034] Fig.10 The figure is a schematic diagram of the structure of a one-way limit component of an anti-pullback mechanism.

[0035] Fig.11 The figure is a schematic diagram of the overall cross-sectional structure of an anti-pullback mechanism.

[0036] Fig.12 The figure is a schematic diagram of the structure of a one-way limit assembly of an anti-pullback mechanism after being limited.

[0037] Fig.13 The present invention is a schematic diagram of the unfolded structure of a folding beam mechanism of a mobile transmission line crossing overhead wire vehicle.

[0038] Fig.14 The present invention is a schematic diagram of the folding structure of a folding beam mechanism of a mobile transmission line crossing overhead wire vehicle.

[0039] Fig.15 The figure is a schematic diagram of the installation of a mobile transmission line crossing overhead wire vehicle.

[0040] Fig.16 The present invention is a schematic diagram of the installation of the first pulley and the second pulley at a folding crossbeam mechanism of a mobile transmission line crossing overhead wire vehicle. DETAILED DESCRIPTION

[0041] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0042] Example 1 See also Figure 13-16 This embodiment provides a power transmission line crossing construction method based on a mobile power transmission line crossing stringer, which is implemented based on the mobile power transmission line crossing stringer; wherein the mobile power transmission line crossing stringer includes a transport vehicle, a hydraulic telescopic mechanical arm articulated at the transport vehicle, and a folding beam mechanism arranged at the top of the hydraulic telescopic mechanical arm; The specific steps include: S1. Drive two mobile transmission line crossing stringing vehicles to the corresponding erection positions respectively; wherein there are two erection positions, and they are located on both sides of the object to be crossed along the extension direction of the transmission line; S2, erecting a crossing frame structure based on the two mobile transmission line crossing overhead wire vehicles; S3. Deploy a sealing structure between the crossing frame structures and complete the crossing construction of the transmission line based on the sealing structure.

[0043] The power transmission line crossing construction method based on the mobile power transmission line crossing wire-laying vehicle disclosed in the present invention can quickly erect the crossing frame by driving two mobile power transmission line crossing wire-laying vehicles to corresponding erection positions respectively, thus effectively shortening the construction period, being suitable for dual working conditions of network closure or non-network closure, and being able to quickly complete the erection of the crossing frame without relying on road repair, thereby improving the efficiency and safety and reliability of network closure operations.

[0044] Among them, when the anchor piles 1170 are drilled to the lower edge of the ring head, retaining plates must be used, and the retaining plates must be completely buried in the soil; the anchor piles 1170 are connected by pull rods. Before drilling, the positions of the piles should be determined according to the lengths of the pull rods and the connecting buckles to ensure that the anchor piles 1170 are subjected to force at the same time when in use; drainage ditches should be set around the anchor piles 1170 to prevent water immersion and erosion, and they should be covered with colored strips of cloth, and inspections should be carried out after rain.

[0045] Among them, the specification of wire rope 1140 is φ12.5×25m.

[0046] As shown in the figure, in this embodiment, step S1 includes: S11. Stake out on site, locate the center point of the crossing, and determine the location of the mobile transmission line crossing overhead crane.

[0047] Through the above, it is convenient to calculate the sag position of the load-bearing cable 1110, so as to prevent the sag of the nylon net 1160 and the load-bearing cable 1110 from affecting the object being crossed.

[0048] Among them, the sag of the load-bearing cable 1110 is less than or equal to 5m. The smaller sag can ensure that the load-bearing cable 1110 will not touch or approach obstacles such as trees, buildings, wires, etc. at the object being crossed during the crossing process, thereby avoiding possible safety problems such as friction, wear or short circuit.

[0049] In this embodiment, the transport vehicle is provided with an outrigger mechanism, and the folding beam mechanism and the hydraulic telescopic mechanical arm are provided with a pull wire hanging point 260; Correspondingly, step S2 includes, S21, at the erection position, supporting and fixing the transport vehicle by means of a leg mechanism; S22, controlling the folding beam mechanism to unfold, and controlling the hydraulic telescopic mechanical arm to extend to a predetermined length; S23, setting anchor piles 1170 on the ground, and laying out anchor wires between the wire hanging points 260 at the folding beam mechanism and the hydraulic telescopic mechanical arm and the corresponding anchor piles 1170; S24, pre-deploying a sealing network structure at the folding beam mechanism of the two mobile power transmission line crossing stringing vehicles; S25. Control the hydraulic telescopic mechanical arm to stand up, tighten the anchor wires to form a two-layer four-sided anchor wire structure, and then complete the erection of the spanning frame structure.

[0050] By laying out the wires and pre-deploying the sealing structure at the folding beam mechanism when the folding beam mechanism and the hydraulic telescopic mechanical arm are not erected, installation is more convenient and there is no need to erect the hydraulic telescopic mechanical arm for installation, thus avoiding the risk of high-altitude operations. At the same time, the double-layer arrangement of the four-party guy wire 1130 not only enhances the overall stability of the mobile transmission line crossing cable truck, but also effectively disperses the force of the guy wire 1130, reducing the risk caused by excessive force at a single point.

[0051] Among them, the first layer of guy wires 1130 and the anchor piles 1170 are not less than 13m away from the center of the mobile transmission line crossing cable truck, and the second layer of guy wires 1130 and the anchor piles 1170 are not less than 18m away from the center of the mobile transmission line crossing cable truck. By setting a reasonable distance between the mobile transmission line crossing cable truck and the anchor piles 1170, the guy wires 1130 can be evenly distributed when bearing loads, reducing the situation where a single point is subjected to excessive force, thereby ensuring the force balance of the entire spanning structure.

[0052] Among them, the angle between the two-layer four-way guy wire 1130 and the ground shall not be greater than 45°. When the angle between the guy wire 1130 and the ground is not greater than 45°, the component force of the guy wire 1130 in the vertical direction is relatively large, which can better meet the requirement that the guy wire 1130 has sufficient component force in the vertical direction to support the mobile transmission line crossing the wire truck.

[0053] In addition, a smaller angle can also help reduce the bending and stress concentration of the cable 1130 during the stress process, thereby extending the service life of the cable 1130. In the actual construction process, keeping the angle between the cable 1130 and the ground no greater than 45° is also beneficial to the operation of the construction workers. The smaller angle makes it easier for the cable 1130 to connect with the drill pile 1170. In addition, for different types of crossing construction and crossing objects of different spans and high speeds, the height of the crossing frame needs to be adjusted according to the actual situation. The hydraulic telescopic mechanical arm, that is, the main body of the crossing frame, has a multi-level height adjustment of 13m / 18m / 24m / 30m. After the beam 110 is fully unfolded on the ground, the hydraulic telescopic mechanical arm is placed in a horizontal or positive angle state. There are plug-in holes at the fixed part and the telescopic end. The telescopic end of the hydraulic telescopic mechanical arm is extended until the plug-in hole at the telescopic end corresponds to the plug-in hole at the fixed part, and the mechanical pin is inserted and connected and fixed with bolts.

[0054] The hydraulic telescopic mechanical arm comprises a fixed part and a telescopic part. A fixed ladder is arranged at the fixed part, and a soft ladder is arranged between the fixed part and the crossbeam 110 .

[0055] In this embodiment, first pulley 1180 hanging points are arranged on the outer sides of both ends of the folding beam mechanism, and second pulley 1190 hanging points are arranged on the inner sides of both ends of the folding beam mechanism; The sealing net structure includes a carrying rope 1110, a circulating rope 1120 and a nylon net 1160 hung on the carrying rope 1110; The pre-deployed network blocking structure includes: S241, hang the first pulley 1180 at the hanging point of the first pulley 1180, and hang the second pulley 1190 at the hanging point of the second pulley 1190; S242, for one of the two mobile transmission line crossing stringers, hang a load-bearing rope 1110 at its first pulley 1180, and hang a loop rope 1120 at its second pulley 1190; wherein one end of the load-bearing rope 1110 and the loop rope 1120 is deployed to the ground anchor point, and the other end of the load-bearing rope 1110 and the loop rope 1120 is deployed to the corresponding side of the object to be crossed; S243, for the other of the two mobile transmission line crossing stringers, hang a first traction rope at its first pulley 1180, and hang a second traction rope at its second pulley 1190; wherein one end of the first traction rope and the second traction rope are deployed to the ground anchor point, and the other end of the first traction rope and the second traction rope are deployed to the corresponding side of the object to be crossed; S244, completing the docking between the load-bearing rope 1110 and the first traction rope and the circulating rope 1120 and the second traction rope; Correspondingly, step S3 includes: S31. Complete the erection of the spanning structure; S32, completing the anchoring of the load-bearing cable 1110; S33, the nylon net 1160 is hung on the carrying rope 1110 through the loop rope 1120; S34, completing the anchoring of the circulating rope 1120.

[0056] By anchoring the load-bearing cables 1110 and the circulating ropes 1120, the stability and safety of the spanning frame structure are further enhanced, which provides a guarantee for the installation of the nylon net 1160 and improves the installation efficiency of the spanning frame structure and the closing net structure, which not only shortens the construction period but also reduces the construction cost.

[0057] In this embodiment, both ends of the load-bearing cable 1110 are anchored to corresponding ground anchor points through steel wire ropes 1140; Correspondingly, In S242, the one end of the load-bearing cable 1110 is connected to the corresponding steel wire rope 1140 through the shackle 1150; In S243, the other end of the first traction rope is connected to the corresponding steel wire rope 1140; The docking of the load-bearing rope 1110 and the first traction rope described in S244 includes temporarily docking the steel wire rope 1140 at the other end of the first traction rope and the load-bearing rope 1110 .

[0058] The arrangement of connecting the steel wire rope 1140 via the shackles 1150 at both ends of the load-bearing cable 1110 makes the connection between the steel wire rope 1140 and the anchor pile 1170 more stable and reliable, and can withstand greater load and tension.

[0059] In this embodiment, S32 includes: S321, pull the load-bearing rope 1110 to a predetermined position by using the first traction rope; wherein, when the temporary docking point between the steel wire rope 1140 at the other end of the first traction rope and the load-bearing rope 1110 passes through the corresponding first pulley 1180, the shackle 1150 is used to complete the connection between the steel wire rope 1140 at the other end of the first traction rope and the load-bearing rope 1110; S322, anchoring the corresponding end of the steel wire rope 1140 to the corresponding ground anchor point.

[0060] Through the above, it is convenient for the temporary docking point between the steel wire rope 1140 and the load-bearing rope 1110 to pass through the first pulley 1180, thereby improving the construction efficiency.

[0061] In this embodiment, an anti-pullback mechanism body 700 is provided at the folding beam mechanism; Specifically, the anti-pullback mechanism body 700 includes a through ring 810, which has a through cavity for the load-bearing rope 1110 or the circulating rope 1120 to pass through, and a plurality of one-way limiting components 830 are slidably and equidistantly provided at the through cavity, and the plurality of one-way limiting components 830 jointly form a one-way limit for the load-bearing rope 1110 or the circulating rope 1120; Correspondingly, step S242 includes: S2421, sequentially passing the circulating rope 1120 through the through cavity of the second pulley 1190 and the anti-pullback mechanism body 700 for hanging, and sequentially passing the carrying rope 1110 through the through cavity of the first pulley 1180 and the anti-pullback mechanism body 700 for hanging; S2422. One-way limiting is formed on the circulating rope 1120 by adjusting multiple one-way limiting components 830, and one-way limiting is formed on the load-bearing rope 1110 by adjusting multiple one-way limiting components 830.

[0062] Through the above, the load-bearing rope or the circulating rope can be rolled unidirectionally or limited, thereby avoiding the high height of the existing line laying construction, and the load-bearing rope or the circulating rope being pulled downward due to its own weight, thereby improving the safety of construction.

[0063] In this embodiment, the load-bearing cable 1110 uses a φ13×60m fixed-length Dyneema rope. The long Dyneema rope has extremely high strength and wear resistance, and is also lightweight, corrosion-resistant, and aging-resistant, ensuring that the load-bearing cable 1110 has sufficient strength to bear the weight of the spanning object and external loads such as wind loads.

[0064] The circulating rope 1120 adopts φ10 DuPont wire rope for pulling the nylon net 1160. The DuPont wire rope has high strength, low elongation, wear resistance, corrosion resistance and light weight. It can withstand large traction force while maintaining a small elongation, ensuring the stability of the traction process.

[0065] In this embodiment, the angle between the load-bearing cable 1110 and the ground is no greater than 45°.

[0066] Through the above, when the angle is not greater than 45°, the force component of the load-bearing cable 1110 in the vertical direction is relatively large, which helps to better bear the weight, while reducing the force in the horizontal direction and reducing the risk of the load-bearing cable 1110 breaking.

[0067] Example 2 See Figure 1 The present embodiment provides a mobile transmission line crossing overhead wire vehicle, including a transport vehicle, a hydraulic telescopic mechanical arm articulated at the transport vehicle, and a folding beam mechanism arranged at the top of the hydraulic telescopic mechanical arm.

[0068] The transport vehicle includes a wheeled off-road chassis, which has multiple steering control modes such as front-wheel steering, rear-wheel steering, four-wheel steering and crab steering, four-wheel drive, small turning radius and excellent off-road performance. The hydraulic torque converter technology and large transmission ratio technology are adopted, and the low-speed off-road performance is greatly improved. This is the existing technology and will not be elaborated here.

[0069] Among them, the mobile transmission line crossing overhead wire vehicle is equipped with a safety assurance system, which includes anti-pull rod mechanical limit, hinged support shaft pressure sensor, multi-level height safety lock and integrated monitoring and control system, which effectively reduces the construction risk and greatly improves the safety performance of the equipment.

[0070] Example 3 See Figure 2 This embodiment provides a folding beam mechanism based on Embodiment 2, which includes a beam mechanism body 100, and the beam mechanism body 100 includes a mounting arm 101, and the mounting arm 101 has a load-bearing end, and two side walls on both sides of the load-bearing end are foldable and provided with two carrying components symmetrical along the center of the mounting arm 101, and the two carrying components together form a mounting platform, and the mounting platform is used to provide a mounting carrier for the construction of the sealing net structure.

[0071] A folding beam mechanism disclosed in the present invention, through the arrangement of the carrying components, can be quickly unfolded on both sides of the load-bearing end of the installation arm during span construction to form a stable erection platform, and cooperate with the hydraulic telescopic mechanical arm to adjust the height, thereby reducing the time and labor costs required for building and dismantling traditional bamboo spanning frames, thereby significantly improving the efficiency of the construction of the sealing net structure.

[0072] It is understood that the foldable carrying assembly allows it to be stored when not in use, such as Figure 6 As shown, the volume is reduced and transportation is convenient. At the same time, the modular setting is adopted, which is easy to replace and reduces material cost and maintenance cost.

[0073] See Figure 2 and Figure 3 In this embodiment, the mounting assembly includes a crossbeam 110 and a support rod 120 hinged to the side wall of the mounting arm 101. The crossbeam 110 is located at the top of the side wall of the load-bearing end, and the support rod 120 is used to support the crossbeam 110; during construction, the crossbeam 110 is rotated to a horizontal position, and the support rod 120 is rotated to the second pin hole 330, and the position is limited by the latch. When not in use, the crossbeam 110 and the support rod 120 are rotated downward, and the support rod 120 is plugged into the first pin hole 320 to limit the position of the support rod 120 and the crossbeam 110, such as Figure 6 In the state shown, it can be easily retracted and extended with the help of manpower.

[0074] The crossbeam 110 is arranged in an inverted U shape, and the crossbeam 110 has an installation cavity opening downward, and a reinforcing plate 310 cooperating with the support rod 120 is provided at the side wall of the installation cavity, and a first pin hole 320 and a second pin hole 330 are formed at the side walls at both ends of the reinforcing plate 310. The first pin hole 320 and the support rod 120 are provided with a through hole cooperating with the first pin hole 320 and the second pin hole 330 at the corresponding positions of the reinforcing plate 310, and the support rod 120 is detachably connected to the first pin hole 320 or the second pin hole 330 by a pin.

[0075] By disposing the reinforcing plate 310 in the installation cavity, the strength and rigidity of the crossbeam 110 are further enhanced, thereby ensuring the stability of the overall structure.

[0076] See Figure 2 and Figure 3 In this embodiment, an upward through opening is formed at the end of the installation cavity away from the installation arm 101, a rotating shaft is provided at the through opening, a protective member 130 is provided at the rotating shaft, a docking hole 430 is formed at the corresponding position of the protective member 130 and the side wall of the installation cavity, a third pin hole 530 and a fourth pin hole 540 are formed at the through opening, the third pin hole 530 is located directly below the rotating shaft, the fourth pin hole 540 is rotated from the third pin hole 530 along the axis of the rotating shaft, and the protective member 130 is detachably connected to the third pin hole 530 or the fourth pin hole 540 by a latch.

[0077] By means of the above structure, the protective member 130 is rotated to Figure 2 or Figure 3 The protective member 130 is positioned in the position shown in the figure, and then a pin is inserted into the fourth pin hole 540 and the docking hole 430 to limit the protective member 130, so as to block both ends of the beam 110 and prevent the load-bearing cable 1110 from falling when the cross-construction line is laid out.

[0078] It is understandable that when not in use, the protective member 130 can be limited by inserting the pin into the third pin hole 530 and the docking hole 430. Figure 6 The state shown is convenient for storage and transportation.

[0079] In this embodiment, a plurality of construction holes are formed at the installation cavity. A detachable hanger 230 is provided at the construction hole near the opening of the installation cavity. The hanger 230 has two installation holes for installing the first pulley 1180 and the second pulley 1190. An anti-pullback mechanism 700 is detachably provided at the corresponding position of the crossbeam 110 and the hanger 230. The anti-pullback mechanism 700 is used to form a one-way limit for the load-bearing cable 1110 when the first pulley 1180 and the second pulley 1190 are releasing the line.

[0080] Through the above structure, construction workers can install the equipment according to usage requirements, thereby improving the application scope of the mechanism.

[0081] Among them, the multiple construction holes formed at the installation cavity provide more installation connection points for the mechanism, and can be used for the installation of searchlights, soft ladders, speed difference automatic controllers, safety ropes, etc.

[0082] Among them, with the setting of the anti-pull-back mechanism 700, during the process of the first pulley 1180 and the second pulley 1190 releasing the line, the load-bearing rope 1110 may be pulled back due to the action of gravity or external force. The function of the anti-pull-back mechanism 700 is to form a one-way limit for the load-bearing rope 1110 when the first pulley 1180 and the second pulley 1190 release the line to prevent the load-bearing rope 1110 from pulling back, thereby protecting the safety of the load-bearing rope 1110 and the construction personnel, which not only improves the efficiency and reliability of the laying of the load-bearing rope 1110, but also reduces the operational risks.

[0083] In this embodiment, two fixing members 260 are provided on the side wall of the mounting arm 101 along the length direction of the beam 110 , and fixing members 260 for installing the pull wire 1130 are formed at both end portions of the fixing member 260 along the length direction of the beam 110 .

[0084] Through the above structure, when the hydraulic telescopic mechanical arm is in a vertical state, Figure 8 As shown, the installation arm 101 and the hydraulic telescopic mechanical arm can be supported by tightening the pull wire 1130 at the fixing member 260.

[0085] In this embodiment, a bearing plate 240 is provided on the side wall of the mounting arm 101 along the length direction of the beam 110, a pedal 520 is detachably provided on the bearing plate 240, and a plurality of connecting members 510 are provided on the bottom wall of the pedal 520, which are installed into corresponding construction holes through pins.

[0086] The above structure makes it convenient for construction workers to stand on the bearing plate 240 to operate during spanning construction. Meanwhile, the detachable arrangement can also be installed and disassembled according to needs.

[0087] In this embodiment, a hanger 250 for cooperating with the hanger is provided at the installation arm 101 , and the hanger 250 is located below the carrying plate 240 .

[0088] Through the above structure, during the crossing and laying-out construction, the tools on the ground can be lifted to the crossbeam 110, which facilitates the construction and improves the practicality of the device.

[0089] In this embodiment, two parallel guide members are provided at the top wall of the load-bearing end, and a docking area is formed between the two guide members; The guide member includes a fixed seat 610 disposed at the top wall of the bearing end, and a roller 620 is rotatably disposed at the fixed seat 610; It can be understood that since the two carrying components are located at the side walls on both sides of the load-bearing end, a distance is formed between the two carrying components, that is, the width of the top wall of the load-bearing end. The setting of the guide member prevents the load-bearing rope 1110 from being stuck at the distance when the top defense line of the beam 110 is in place. At the same time, the guide member can also protect the carrying components after folding.

[0090] Two first mounting seats 210 are provided at the top of the beam 110 and are arranged in parallel along the length direction of the beam 110. One end of the two first mounting seats 210 abuts against the through opening, and the other end extends into the docking area. The first mounting seat 210 has a plurality of continuously arranged mounting grooves, and a first insulating roller 220 is rotatably provided in each of the mounting grooves.

[0091] By extending the other ends of the two first mounting seats 210 into the docking area, the first insulating rollers 220 at the two first mounting seats 210 can extend into the docking area, which preferably avoids the load-bearing cable 1110 from being stuck between the guide member and the first mounting seat 210 .

[0092] See Figure 4 and Figure 5 In this embodiment, a second mounting seat 410 is provided at the center of the top wall of the protective member 130 along the length direction of the beam 110 , and a second insulating roller 420 is rotatably provided at the second mounting seat 410 . The second mounting seat 410 is located between the two first mounting seats 210 .

[0093] The above structure ensures that when the load-bearing cable 1110 is at the edge of the beam 110 , the second insulating roller 420 can also provide rolling contact for the load-bearing cable 1110 , thereby avoiding wear of the load-bearing cable 1110 .

[0094] It is understandable that when the protective member 130 is in the Figure 5 In the state shown, the second insulating roller 420 is located between the two first insulating rollers 220 and extends into the two first insulating rollers 220 , which preferably avoids the situation where a gap between the first insulating roller 220 and the second insulating roller 420 causes wire jamming.

[0095] Example 4 See Fig. 9This embodiment provides an anti-pullback mechanism, which is different from the embodiment 3 in that: the folding beam mechanism has a 230 for detachably installing the first pulley 1180 and the second pulley 1190, and the folding beam mechanism is provided with an anti-pullback mechanism at the corresponding position of the hanger 230, and the anti-pullback mechanism includes an anti-pullback mechanism body 700, and the anti-pullback mechanism body 700 includes a through ring 810, and the through ring 810 has a through cavity for the load-bearing rope 1110 or the circulating rope 1120 to pass through, and a plurality of one-way limiting components 830 are slidably and equidistantly provided at the through cavity, and the plurality of one-way limiting components 830 jointly limit the load-bearing rope 1110 or the circulating rope 1120; The one-way limiting assembly 830 includes an adjusting member 910, one end of which is rotatably provided with a pressure roller 930 located in the through cavity, and the outer wall of the pressure roller 930 has a flexible layer in contact with the load-bearing rope 1110 or the circulating rope 1120. The adjusting member 910 has an installation cavity 1010, and the installation cavity 1010 has a positioning member 940 for adjusting the one-way rolling of the pressure roller 930 or limiting the pressure roller 930.

[0096] An anti-pullback mechanism disclosed in the present invention, through the arrangement of multiple one-way limit components 830, can perform one-way rolling or limit the load-bearing rope 1110 or the looping rope 1120 according to needs, thereby avoiding the problem that the load-bearing rope 1110 or the looping rope 1120 is pulled downward due to its own weight due to the high height of the existing line-laying construction, resulting in certain safety hazards.

[0097] Among them, there are at least three one-way limiting components 830.

[0098] See Fig. 9 In this embodiment, a through groove 820 for installing the one-way limit assembly 830 is formed on the inner wall of the through cavity, and a locking assembly 840 is provided on the side wall corresponding to the through ring 810 and the through groove 820. The locking assembly 840 is used to limit the one-way limit assembly 830.

[0099] Through the above structure, it is convenient to lock the one-way limiting assembly 830, so that the one-way limiting assembly 830 can be adjusted according to the load-bearing ropes 1110 or the circulating ropes 1120 of different diameters.

[0100] See Fig. 9 or Fig.12 In this embodiment, a contact area is formed between the multiple one-way limit components 830 for being coaxially arranged with the through cavity for the load-bearing rope 1110 or the loop rope 1120 to pass through, and the contact area is used to cooperate with the outer wall of the load-bearing rope 1110 or the loop rope 1120.

[0101] The contact area is coaxially arranged with the penetration opening of the first pulley 1180 or the second pulley 1190 .

[0102] Through the above structure, the load-bearing rope 1110 or the circulating rope 1120 is coaxially arranged with the contact area, ensuring the contact area between the multiple one-way limiting components 830 and the load-bearing rope 1110 or the circulating rope 1120, thereby improving the contact effect between the load-bearing rope 1110 or the circulating rope 1120 and the one-way limiting components 830.

[0103] See Fig.11 In this embodiment, the adjusting member 910 has a rotating cavity 920 for installing the pressing roller 930 and communicating with the installation cavity 1010; The positioning member 940 includes a sliding member 1020 slidably disposed in the installation cavity 1010, and a block 1030 cooperating with the clamping roller 930 is formed at one end of the sliding member 1020 corresponding to the rotating cavity 920, and a handle 1050 passing through the installation cavity 1010 is formed at the other end of the sliding member 1020. A spring 1040 is provided between the installation cavity 1010 and the sliding member 1020, and the spring 1040 is used to provide an elastic force to keep the sliding member 1020 pressed toward the rotating cavity 920.

[0104] Through the above structure, the positioning member 940 is always in a one-way locked rotation state with respect to the clamping roller 930, thereby ensuring the stability of the load-bearing rope 1110 or the circulating rope 1120 in the pay-off direction, and avoiding the reversal of the clamping roller 930, which causes the load-bearing rope 1110 or the circulating rope 1120 to be pulled downward due to its own weight.

[0105] See Fig.10 or Fig.11 In this embodiment, the outer wall of the clamping roller 930 has a plurality of external teeth arranged at equal intervals, and grooves corresponding to the clamping block 1030 are formed between adjacent external teeth; one side of the clamping block 1030 has an inclined surface corresponding to the external teeth.

[0106] Through the above structure, the outer teeth of the pressing roller 930 can press the block 1030 upward along the inclined surface of the block 1030, thereby achieving one-way rolling.

[0107] See Fig.10 or Fig.11 In this embodiment, a slide groove 951 is formed at the corresponding side walls of the adjusting member 910 and the locking assembly 840; the locking assembly 840 includes a slider 952 slidably arranged in the slide groove 951 and a fastening bolt 1090, and a threaded hole that penetrates the through groove 820 is formed at the side wall of the penetrating ring 810, and the fastening bolt 1090 penetrates the threaded hole and is threadedly arranged on the slider 952.

[0108] Through the above structure, when limiting the one-way limit assembly 830, the slider 952 can be tightened toward the inner wall of the through groove 820 by rotating the fastening bolt 1090, thereby limiting the one-way limit assembly 830, which is simple to operate and stable and reliable.

[0109] See Fig.10 or Fig.11 In this embodiment, a clamping portion 953 is formed on the side wall of the slider 952 to cooperate with the side wall of the through groove 820.

[0110] Through the above structure, the connection effect between the slider 952 and the side wall of the through groove 820 is improved, and the limiting effect of the one-way limiting component 830 is further improved.

[0111] See Fig. 9 or Fig.12 In this embodiment, an extension arm 850 is provided at the penetration ring 810, and a mounting member 860 is rotatably provided at the extension arm 850.

[0112] Through the above structure, it is convenient to cooperate with the release angle of the load-bearing rope 1110 or the circulating rope 1120, avoiding interference with the first pulley 1180 or the second pulley 1190 to affect the release of the load-bearing rope 1110 or the circulating rope 1120, thereby improving the application scope of the present mechanism.

[0113] See Fig.11 In this embodiment, a positioning rod 1070 is formed at the bottom wall of the handle 1050, a positioning groove 1080 for the positioning rod 1070 to be inserted is formed at the corresponding position of the adjustment member 910 and the handle 1050, and the handle 1050 has a plug hole 1060; First protrusions 950 are formed at the side walls on both sides of the adjusting member 910 . Insertion holes 960 corresponding to the insertion holes 1060 are formed at the first protrusions 950 . The insertion holes 960 and the insertion holes 1060 are connected with each other through a latch to limit the positioning member 940 .

[0114] Through the above structure, the one-way rolling limit direction of the load-bearing rope 1110 or the circulating rope 1120 can be adjusted or the load-bearing rope 1110 or the circulating rope 1120 can be limited according to the use requirements of the line release, without the need for cumbersome conversion operations, and the operation is simple and fast.

[0115] It can be understood that when the unidirectional rolling direction of the load-bearing rope 1110 or the circulating rope 1120 needs to be changed, it is sufficient to pull it upward and rotate the positioning member 940 90° to reset it. The unidirectional rolling direction can be changed by simply adjusting the direction of the adjusting member 910, which is convenient for direction change during disassembly and provides safety protection during disassembly. When the load-bearing rope 1110 or the circulating rope 1120 needs to be limited, the positioning member 940 is pressed downward, and then the pin is inserted into the plug hole 960 and the plug hole 1060 to complete the limiting of the positioning member 940.

[0116] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0117] The present invention and its implementation methods are described schematically above, and the description is not restrictive. The embodiments shown in the embodiments are only part of the implementation methods of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the embodiments and designs a structure and an implementation method similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A folding beam mechanism, characterized in that: The invention comprises a crossbeam mechanism body (100), wherein the crossbeam mechanism body (100) comprises a mounting arm (101), wherein the mounting arm (101) has a load-bearing end, and two foldable side walls on both sides of the load-bearing end are provided with two mounting components symmetrical along the center of the mounting arm (101), wherein the two mounting components together form a mounting platform, and the mounting platform is used to provide a mounting carrier for the construction of a sealing net structure.

2. A folding beam mechanism according to claim 1, characterized in that: The mounting assembly comprises a crossbeam (110) and a support rod (120) hinged to the side wall of the mounting arm (101); the crossbeam (110) is located at the top of the side wall of the load-bearing end; and the support rod (120) is used to support the crossbeam (110); The crossbeam (110) is arranged in an inverted U shape. The crossbeam (110) has an installation cavity with an opening facing downward. A reinforcing plate (310) cooperating with the support rod (120) is arranged at a side wall of the installation cavity. A first pin hole (320) and a second pin hole (330) are formed at the side walls at both ends of the reinforcing plate (310). The first pin hole (320) and the support rod (120) are provided with a through hole cooperating with the first pin hole (320) and the second pin hole (330) at corresponding positions of the reinforcing plate (310). The support rod (120) is detachably connected to the first pin hole (320) or the second pin hole (330) via a latch.

3. A folding beam mechanism according to claim 2, characterized in that: An upwardly penetrating opening is formed at one end of the installation cavity away from the installation arm (101), a rotating shaft is provided at the opening, a protective member (130) is provided at the rotating shaft, a docking hole (430) is formed at a position corresponding to the protective member (130) and the side wall of the installation cavity, a third pin hole (530) and a fourth pin hole (540) are formed at the opening, the third pin hole (530) is located directly below the rotating shaft, the fourth pin hole (540) is formed by rotating from the third pin hole (530) along the axis of the rotating shaft, and the protective member (130) is detachably connected to the third pin hole (530) or the fourth pin hole (540) via a latch.

4. A folding beam mechanism according to claim 2, characterized in that: Two parallel guide members are provided at the top wall of the load-bearing end, and a docking area is formed between the two guide members; The guide member comprises a fixed seat (610) disposed at the top wall of the bearing end, and a roller (620) is rotatably disposed at the fixed seat (610); Two first mounting seats (210) are arranged in parallel along the length direction of the beam (110) at the top of the beam (110), one end of the two first mounting seats (210) is abutted against the through opening, and the other end extends into the docking area, and the first mounting seats (210) have a plurality of continuously arranged mounting grooves, and first insulating rollers (220) are rotatably arranged in each of the mounting grooves.

5. A folding beam mechanism according to claim 3, characterized in that: A second mounting seat (410) is provided at the center of the top wall of the protection member (130) along the length direction of the crossbeam (110), a second insulating roller (420) is rotatably provided at the second mounting seat (410), and the second mounting seat (410) is located between the two first mounting seats (210).

6. A folding beam mechanism according to claim 2, characterized in that: A plurality of construction holes are formed at the installation cavity, and a detachable hanging piece (230) is provided at the construction hole near the opening of the installation cavity. The hanging piece (230) has two installation holes for installing the first pulley (1180) and the second pulley (1190). An anti-pullback mechanism (700) is detachably provided at the corresponding position of the crossbeam (110) and the hanging piece (230). The anti-pullback mechanism (700) is used to form a one-way limit for the load-bearing cable (1110) when the first pulley (1180) and the second pulley (1190) are releasing the line.

7. A folding beam mechanism according to claim 1, characterized in that: Two pull wire hanging points (260) are provided on the side wall of the installation arm (101) along the length direction of the cross beam (110), and pull wire hanging points (260) for installing pull wires (1130) are formed at both end portions of the pull wire hanging points (260) along the length direction of the cross beam (110).

8. The folding beam mechanism according to claim 1, characterized in that: A bearing plate (240) is provided on the side wall of the mounting arm (101) along the length direction of the crossbeam (110), a pedal (520) is detachably provided on the bearing plate (240), a plurality of connecting members (510) are provided on the bottom wall of the pedal (520), and the connecting members (510) are installed in corresponding construction holes through latches.

9. The folding beam mechanism according to claim 1, characterized in that: A sling (250) for cooperating with the sling is provided at the mounting arm (101), and the sling (250) is located below the bearing plate (240).

10. A mobile transmission line crossing wire-string vehicle, comprising a transport vehicle and a hydraulic telescopic mechanical arm hingedly arranged on the transport vehicle, wherein the top of the hydraulic telescopic mechanical arm has a folding beam mechanism as claimed in any one of claims 1 to 9.

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