Anti-pullback mechanism and mobile transmission line crossing stringer

Abstract

The present invention discloses an anti-pullback mechanism and a mobile transmission line crossing wire-erecting vehicle, belonging to the technical field of crossing frames. An anti-pullback mechanism and a mobile transmission line crossing wire-erecting vehicle include an anti-pullback mechanism body, the anti-pullback mechanism body includes a threading ring, the threading ring has a through cavity for the load-bearing rope or the circulating rope to be threaded, and a plurality of one-way limit assemblies are slidably and equidistantly provided at the through cavity, and the plurality of one-way limit assemblies jointly form a limit for the load-bearing rope or the circulating rope; the one-way limit assembly includes an adjusting member, and a pressure roller is rotatably provided at one end of the adjusting member located in the through cavity. By providing a plurality of one-way limit assemblies, the load-bearing rope or the circulating rope can be rolled unidirectionally or limited according to needs, thereby avoiding the problem that the existing line laying construction is high and the load-bearing rope or the circulating rope is pulled downward due to its own weight, resulting in certain safety hazards.

Description

Technical Field

[0001] The present invention relates to the technical field of spanning frames, in particular to an anti-pullback mechanism and a mobile transmission line spanning overhead crane 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-stop crossing construction has become the main trend to solve the above crossing construction difficulties.

[0003] At present, when carrying out the construction of crossing and sealing the object to be crossed with voltage lines, a crossing frame is usually set up at the object to be crossed, and then the line laying construction is carried out. Before the line laying construction, it is necessary to pass a lighter load-bearing rope or a circulating rope through the pulleys at the top of the crossing frame on both sides or one side, and then connect the load-bearing rope or the circulating rope. Due to the high construction height, the load-bearing rope or the circulating rope is pulled downward by its own weight, resulting in certain safety hazards. Summary of the Invention

[0004] The present invention provides an anti-pullback mechanism and a mobile power transmission line crossing overhead wire vehicle, which can overcome certain defects of the prior art.

[0005] According to the present invention, an anti-pullback mechanism and a mobile transmission line crossing stringer include an anti-pullback mechanism body, the anti-pullback mechanism body including a threading ring, the threading ring having a through cavity for passing a load-bearing rope or a circulating rope, and a plurality of one-way limit assemblies slidably and equidistantly provided in the through cavity, the plurality of one-way limit assemblies jointly forming a limit for the load-bearing rope or the circulating rope;

[0006] The one-way limit assembly includes an adjusting part, one end of which is located in the through cavity and is rotatably provided with a pressure roller. The outer wall of the pressure roller has a flexible layer that contacts the load-bearing rope or the circulating rope. The adjusting part has an installation cavity, and the installation cavity is provided with a positioning part for adjusting the one-way rolling of the pressure roller or limiting the pressure roller.

[0007] Preferably, a through groove for installing the one-way limit assembly is formed on the inner wall of the through cavity, and a locking assembly is provided on the side wall corresponding to the through ring and the through groove, and the locking assembly is used to limit the one-way limit assembly.

[0008] The above structure facilitates locking of the one-way limiting assembly, so that the one-way limiting assembly can be adjusted according to load ropes or circulating ropes of different diameters.

[0009] Preferably, a contact area is formed between the multiple one-way limit components, which is coaxially arranged with the through cavity for the load-bearing rope or the circulating rope to pass through, and the contact area is used to cooperate with the outer wall of the load-bearing rope or the circulating rope.

[0010] Through the above structure, the load-bearing rope or the circulating rope is coaxially arranged with the contact area, ensuring the contact area between multiple one-way limiting components and the load-bearing rope or the circulating rope, thereby improving the contact effect between the load-bearing rope or the circulating rope and the one-way limiting components.

[0011] Preferably, the adjusting member has a rotating cavity for mounting the pressing roller and communicating with the mounting cavity;

[0012] The positioning member includes a sliding member slidably arranged in the installation cavity, a clamping block cooperating with the clamping roller is formed at one end of the sliding member corresponding to the rotating cavity, and a handle passing through the installation cavity is formed at the other end of the sliding member. A spring is provided between the installation cavity and the sliding member, and the spring is used to provide an elastic force to keep the sliding member pressed toward the rotating cavity.

[0013] Through the above structure, the positioning member is always in a one-way locked rotation state with respect to the pressure roller, thereby ensuring the stability of the load-bearing rope or the circulating rope in the pay-off direction, and avoiding the reversal of the pressure roller, which causes the load-bearing rope or the circulating rope to be pulled downward due to its own weight.

[0014] Preferably, the outer wall of the pressure roller has a plurality of external teeth arranged at equal intervals, and grooves corresponding to the clamping blocks are formed between adjacent external teeth; one side of the clamping block has an inclined surface corresponding to the external teeth.

[0015] Through the above structure, the outer teeth of the pressing roller can press the clamping block upward along the inclined surface of the clamping block, thereby achieving one-way rolling.

[0016] Preferably, a sliding groove is formed at the corresponding side walls of the adjusting member and the locking assembly; the locking assembly includes a slider slidably arranged in the sliding groove and a fastening bolt, and a threaded hole that penetrates the through groove is formed at the side wall of the penetrating ring, and the fastening bolt passes through the threaded hole and is threaded on the slider.

[0017] Through the above structure, when limiting the one-way limit assembly, the slider can be tightened toward the inner wall of the through groove by rotating the fastening bolt, thereby limiting the one-way limit assembly, which is simple to operate, stable and reliable.

[0018] Preferably, a clamping portion is formed on the side wall of the slider and cooperates with the side wall of the through groove.

[0019] Through the above structure, the connection effect between the slider and the side wall of the through groove is improved, and the limiting effect of the one-way limiting component is further improved.

[0020] Preferably, an extension arm is provided at the penetration ring, and a mounting piece is rotatably provided at the extension arm.

[0021] The above structure facilitates the coordination with the pay-out angle of the load-bearing rope or the circulating rope, thereby avoiding interference with the first pulley or the second pulley affecting the pay-out of the load-bearing rope or the circulating rope, thereby improving the scope of application of the mechanism.

[0022] Preferably, a positioning rod is formed at the bottom wall of the handle, a positioning groove for the positioning rod to be inserted is formed at the corresponding position of the adjusting member and the handle, and the handle has an insertion hole;

[0023] A first convex portion is formed at the side walls on both sides of the adjusting member, and a plugging hole corresponding to the plugging hole is formed at the first convex portion. The plugging holes are connected to the plugging holes through a pin to limit the positioning member.

[0024] Through the above structure, the one-way rolling limit direction of the load-bearing rope or the circulating rope can be adjusted or the load-bearing rope or the circulating rope 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.

[0025] A mobile transmission line crossing wire stringing vehicle includes a transport vehicle and a hydraulic telescopic mechanical arm provided at the transport vehicle. The hydraulic telescopic mechanical arm has a telescopic end, at which a foldable crossbeam mechanism body is provided. The crossbeam mechanism body has a detachable hanger for mounting a first pulley and a second pulley. The crossbeam mechanism body and the hanger are detachably provided at corresponding positions thereof with an anti-pullback mechanism as described in an embodiment or any one of the embodiments.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1. Through the setting of multiple one-way limit components, the load-bearing rope or the circulating rope can be rolled in one direction or limited according to needs, avoiding the problem that the load-bearing rope or the circulating rope is pulled downward due to its own weight when the existing laying-out construction is too high, which may cause certain safety hazards;

[0028] 2. Through the setting of the plug hole, positioning piece and plug hole, the one-way rolling limit direction of the load-bearing rope or the circulating rope can be adjusted according to the use requirements of the line, or the load-bearing rope or the circulating rope can be limited. There is no need for tedious conversion operations, and the operation is simple and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a schematic diagram of the overall structure of a mobile transmission line crossing wire vehicle.

[0030] Figure 2 It is a schematic diagram of the overall structure of a folding beam mechanism.

[0031] Figure 3 The figure is a schematic diagram of the top view of a folding beam mechanism.

[0032] Figure 4This is a schematic diagram of the first insulating roller installation structure of a folding beam mechanism.

[0033] Figure 5 The figure is a schematic diagram of the protective structure of a folding beam mechanism.

[0034] Figure 6 This is a schematic diagram of a pedal after installation of a folding beam mechanism.

[0035] Figure 7 The figure is a schematic diagram of the folded structure of a folding beam mechanism.

[0036] Figure 8 This is a schematic diagram of the installation of the anti-pullback mechanism body of a folding beam mechanism.

[0037] Figure 9 The figure is a schematic diagram of the overall structure of an anti-pullback mechanism.

[0038] Figure 10 This is a schematic diagram of the one-way limit component structure of an anti-pullback mechanism.

[0039] Figure 11 It is a schematic diagram of the overall cross-sectional structure of an anti-pullback mechanism.

[0040] Figure 12 This is a schematic diagram of the structure of a one-way limit component of an anti-pullback mechanism after limiting.

[0041] Figure 13 The figure shows the expanded structure of the folding beam mechanism of a mobile transmission line spanning stringer.

[0042] Figure 14 This is a schematic diagram of the folding structure of the folding crossbeam mechanism of a mobile transmission line spanning stringer.

[0043] Figure 15 The figure is a schematic diagram of the installation of a mobile transmission line crossing stringer.

[0044] Figure 16 The present invention is a schematic diagram showing the installation of the first pulley and the second pulley at the folding beam mechanism of a mobile transmission line spanning stringer. DETAILED DESCRIPTION

[0045] In order to further understand the content of the present invention, the present invention is described in detail with reference to the embodiments. It should be understood that the embodiments are merely for explanation of the present invention and are not intended to limit the present invention.

[0046] Example 1

[0047] See also Figure 13-16This embodiment provides a transmission line spanning construction method based on a mobile transmission line spanning stringer, which is implemented based on the mobile transmission line spanning stringer; wherein the mobile transmission line spanning stringer includes a transport vehicle, a hydraulic telescopic mechanical arm articulated at the transport vehicle, and a folding beam mechanism provided at the top of the hydraulic telescopic mechanical arm;

[0048] The specific steps include:

[0049] S1. Drive two mobile transmission line crossing stringing vehicles to corresponding erection locations, respectively. There are two erection locations, one on each side of the object to be crossed along the extension direction of the transmission line.

[0050] S2. erecting a crossing frame structure based on the two mobile transmission line crossing stringing vehicles;

[0051] S3. Deploy a closure structure between the spanning frames and complete the spanning construction of the transmission line based on the closure structure.

[0052] The power transmission line crossing construction method based on the mobile power transmission line crossing stringing vehicle disclosed in the present invention can quickly erect the crossing frame by driving two mobile power transmission line crossing stringing vehicles to the corresponding erection positions respectively, thus effectively shortening the construction period. It is suitable for dual working conditions of closing the network or not closing the network, and the construction of the crossing frame can be completed quickly without relying on road construction, thereby improving the efficiency and safety and reliability of the network closing operation.

[0053] Among them, when the anchor piles 1170 are drilled to the bottom edge of the ring head, retaining boards must be used, and the retaining boards must be completely buried in the soil; the anchor piles 1170 are connected by pull rods. Before drilling, the positions between the piles should be determined according to the length 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 soaking and erosion, and they should be covered with colored strips of cloth. Inspections should be carried out after rain.

[0054] Among them, the specification of wire rope 1140 is φ12.5×25m.

[0055] As shown in the figure, in this embodiment, step S1 includes:

[0056] S11. Layout on site, locate the center point of the crossing, and determine the location of the mobile transmission line crossing stringer.

[0057] Through the above, it is easy to calculate the sag position of the load-bearing cable 1110, so as to prevent the nylon net 1160 and the load-bearing cable 1110 from affecting the object being crossed.

[0058] Among them, the sag of the load-bearing rope 1110 is less than or equal to 5m. The smaller sag can ensure that the load-bearing rope 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.

[0059] In this embodiment, the transport vehicle is provided with a leg mechanism, and the folding beam mechanism and the hydraulic telescopic mechanical arm are both provided with a pull wire hanging point 260;

[0060] Correspondingly, step S2 includes, S21, supporting and fixing the transport vehicle at the erection position by using the outrigger mechanism;

[0061] S22, controlling the folding beam mechanism to unfold and controlling the hydraulic telescopic mechanical arm to extend to a predetermined length;

[0062] S23. Anchor piles 1170 are set on the ground, and anchor cables are laid out between the cable hanging points 260 on the folding beam mechanism and the hydraulic telescopic mechanical arm and the corresponding anchor piles 1170;

[0063] S24, pre-deploying a sealing structure at the folding beam mechanism of the two mobile transmission line crossing stringing vehicles;

[0064] S25. Control the hydraulic telescopic mechanical arm to stand up, tighten the anchoring wires to form a two-layer four-sided anchoring wire structure, and then complete the erection of the spanning frame structure.

[0065] 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 upright, 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 line-laying vehicle, but also effectively disperses the force on the guy wire 1130, reducing the risk caused by excessive force on a single point.

[0066] 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 wire-stringing vehicle, 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 wire-stringing vehicle. By setting a reasonable distance between the mobile transmission line crossing wire-stringing vehicle 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.

[0067] Among them, the angle between the two-layer four-sided 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 line-laying vehicle.

[0068] 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 degrees 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.

[0069] In addition, for different types of spanning construction and spanning objects of different spans and speeds, the height of the spanning frame needs to be adjusted according to the actual situation. The hydraulic telescopic mechanical arm, that is, the main body of the spanning 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 position of the plug-in hole at the fixed part, and the mechanical pin is inserted and fixed with bolts.

[0070] The hydraulic telescopic mechanical arm has a fixed part and a telescopic part. A fixed ladder is provided at the fixed part, and a soft ladder is provided between the fixed part and the crossbeam 110.

[0071] In this embodiment, first pulley 1180 hanging points are provided on the outer sides of both ends of the folding beam mechanism, and second pulley 1190 hanging points are provided on the inner sides of both ends of the folding beam mechanism;

[0072] The sealing net structure includes a carrying rope 1110, a circulating rope 1120 and a nylon net 1160 hung on the carrying rope 1110;

[0073] The pre-deployed network blocking structure includes:

[0074] S241, hang the first pulley 1180 at the first pulley 1180 hanging point, hang the second pulley 1190 at the second pulley 1190 hanging point;

[0075] S242. For one of the two mobile transmission line crossing stringing vehicles, hang a load-bearing rope 1110 on its first pulley 1180 and hang an endless rope 1120 on its second pulley 1190; wherein one end of the load-bearing rope 1110 and the endless rope 1120 are deployed to the ground anchor point, and the other ends of the load-bearing rope 1110 and the endless rope 1120 are deployed to the corresponding side of the object to be crossed;

[0076] S243. For the other of the two mobile transmission line crossing stringing vehicles, hang a first traction rope on its first pulley 1180 and a second traction rope on 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;

[0077] S244: Complete the docking between the carrying rope 1110 and the first traction rope, and the circulating rope 1120 and the second traction rope;

[0078] Correspondingly, step S3 includes,

[0079] S31. Complete the erection of the spanning structure;

[0080] S32, completing the anchoring of the load-bearing cable 1110;

[0081] S33, completing the hanging of the nylon net 1160 on the carrying rope 1110 through the loop rope 1120;

[0082] S34. Complete the anchoring of the loop rope 1120.

[0083] 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, thus shortening the construction period and reducing the construction cost.

[0084] In this embodiment, both ends of the load-bearing cable 1110 are anchored to corresponding ground anchor points via steel wire ropes 1140;

[0085] Correspondingly,

[0086] In S242 , the one end of the load-bearing cable 1110 is connected to the corresponding wire rope 1140 via the shackle 1150 ;

[0087] In S243, the other end of the first traction rope is connected to the corresponding steel wire rope 1140;

[0088] The docking of the load-bearing rope 1110 and the first traction rope 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 .

[0089] The arrangement of connecting the steel wire rope 1140 at both ends of the load-bearing cable 1110 through the shackle 1150 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.

[0090] In this embodiment, S32 includes:

[0091] S321, pulling the load-carrying rope 1110 to a predetermined position using the first traction rope; wherein, when the temporary connection point between the steel wire rope 1140 at the other end of the first traction rope and the load-carrying rope 1110 passes the corresponding first pulley 1180, the steel wire rope 1140 at the other end of the first traction rope and the load-carrying rope 1110 are connected using the shackle 1150;

[0092] S322. Anchor the corresponding end of the steel wire rope 1140 to the corresponding ground anchor point.

[0093] Through the above, the temporary connection point between the steel wire rope 1140 and the load-bearing rope 1110 is conveniently passed through the first pulley 1180, thereby improving construction efficiency.

[0094] In this embodiment, an anti-pullback mechanism body 700 is provided at the folding beam mechanism;

[0095] Specifically, the anti-pullback mechanism body 700 includes a through-hole 810 having a through-hole for the load-bearing rope 1110 or the loop rope 1120 to pass through. The through-hole is slidably provided with a plurality of one-way limiting assemblies 830 at equal intervals. The plurality of one-way limiting assemblies 830 together form a one-way limit for the load-bearing rope 1110 or the loop rope 1120.

[0096] Correspondingly, step S242 includes:

[0097] S2421, sequentially pass the circulating rope 1120 through the second pulley 1190 and the through-hole of the anti-pullback mechanism body 700 for installation, and sequentially pass the carrying rope 1110 through the first pulley 1180 and the through-hole of the anti-pullback mechanism body 700 for installation;

[0098] S2422. unidirectionally limit the circulating rope 1120 by adjusting the plurality of unidirectional limit assemblies 830, and unidirectionally limit the carrying rope 1110 by adjusting the plurality of unidirectional limit assemblies 830.

[0099] Through the above, the load-bearing rope or the circulating rope can be rolled in one direction 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.

[0100] In this embodiment, the load-bearing rope 1110 uses a φ13×60m fixed-length Dyneema rope. The long Dyneema rope has extremely high strength and wear resistance, and is lightweight, corrosion-resistant, and aging-resistant, ensuring that the load-bearing rope 1110 has sufficient strength to bear the weight of the spanning object and external loads such as wind load.

[0101] The circulating rope 1120 uses φ10 DuPont silk rope for pulling nylon net 1160. DuPont silk rope has high strength, low elongation, wear resistance, corrosion resistance and light weight. It can withstand large pulling force while maintaining a small elongation, ensuring the stability of the pulling process.

[0102] In this embodiment, the angle between the load-bearing cable 1110 and the ground is no greater than 45°.

[0103] As described 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 lowering the risk of the load-bearing cable 1110 breaking.

[0104] Example 2

[0105] Seen in Figure 1 This embodiment provides a mobile transmission line crossing wire-string vehicle, including a transport vehicle, a hydraulic telescopic mechanical arm articulated at the transport vehicle, and a folding beam mechanism at the top of the hydraulic telescopic mechanical arm.

[0106] The transporter includes a wheeled off-road chassis with multiple steering modes, including front-wheel steering, rear-wheel steering, four-wheel steering, and crab steering. Its four-wheel drive design offers a tight turning radius and excellent off-road performance. The use of torque converter technology and a high transmission ratio significantly enhances low-speed off-road performance. This is prior art and will not be elaborated upon here.

[0107] Among them, the mobile transmission line crossing wire-laying vehicle is equipped with a safety assurance system, which includes anti-pull rod mechanical limit, hinged support axial pressure sensor, multi-level height safety lock and integrated monitoring and control system, which effectively reduces construction risks and greatly improves the safety performance of the equipment.

[0108] Example 3

[0109] Seen in Figure 2 This embodiment provides a folding beam mechanism based on embodiment 2, which includes a beam mechanism body 100. The beam mechanism body 100 includes a mounting arm 101. The mounting arm 101 has a load-bearing end. Two foldable side walls on both sides of the load-bearing end are symmetrically provided with two carrying components along the center of the mounting arm 101. The two carrying components together form a mounting platform, which is used to provide a mounting carrier for the construction of the sealing structure.

[0110] The 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 cooperates with the height adjustment of the hydraulic telescopic mechanical arm to reduce the time and labor costs required for building and dismantling traditional bamboo spanning frames, thereby significantly improving the efficiency of the closure structure construction.

[0111] It is understood that the foldable carrying assembly can 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 for easy replacement, which reduces material cost and maintenance cost.

[0112] Seen in 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 is limited by a latch. When not in use, the crossbeam 110 and the support rod 120 are rotated downward, and then the support rod 120 is inserted into the first pin hole 320 to limit the support rod 120 and the crossbeam 110. Figure 6 In the state shown, it can be easily retracted and extended with the help of manpower.

[0113] 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 is provided on the side wall of the installation cavity to cooperate with the support rod 120, and a first pin hole 320 and a second pin hole 330 are formed on the side walls at both ends of the reinforcing plate 310. The first pin hole 320, the support rod 120 and the reinforcing plate 310 are provided with a through hole corresponding to the first pin hole 320 and the second pin hole 330, and the support rod 120 is detachably connected to the first pin hole 320 or the second pin hole 330 by a pin.

[0114] 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.

[0115] Seen in Figure 2 and Figure 3 In this embodiment, an upward through opening is formed at one end of the mounting cavity away from the mounting 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 mounting 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, and 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 through a pin.

[0116] By the above structure, the protective member 130 is rotated to Figure 2 or Figure 3As shown in the position, a pin is inserted into the fourth pin hole 540 and the docking hole 430 to limit the protective member 130, thereby blocking both ends of the beam 110 to prevent the load-bearing cable 1110 from falling when crossing the construction line.

[0117] 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.

[0118] 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 beam 110 and the hanger 230. The anti-pullback mechanism 700 is used to form a one-way limit for the load-bearing rope 1110 when the first pulley 1180 and the second pulley 1190 are releasing the line.

[0119] Through the above structure, construction workers can install the equipment according to usage requirements, thereby improving the applicability of the mechanism.

[0120] Among them, the multiple construction holes formed in the installation cavity provide more installation connection points for the mechanism, which can be used to install searchlights, soft ladders, speed difference automatic controllers, safety ropes, etc.

[0121] Among them, the setting of the anti-pullback mechanism 700 is that during the process of the first pulley 1180 and the second pulley 1190 paying out 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-pullback 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 paying out the line, preventing the load-bearing rope 1110 from pulling back, thereby protecting the safety of the load-bearing rope 1110 and the construction workers, which not only improves the efficiency and reliability of the laying of the load-bearing rope 1110, but also reduces the operational risks.

[0122] 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 . Fixing members 260 for installing the pull wire 1130 are formed at both ends of the fixing member 260 along the length direction of the beam 110 .

[0123] 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.

[0124] In this embodiment, the mounting arm 101 is provided with a supporting plate 240 on the side wall along the length direction of the beam 110, and a pedal 520 is detachably provided on the supporting plate 240. A plurality of connecting parts 510 are provided on the bottom wall of the pedal 520, and the connecting parts 510 are installed in the corresponding construction holes through pins.

[0125] The above structure makes it convenient for construction workers to stand on the bearing plate 240 to operate during spanning construction. At the same time, the detachable setting can also be installed and removed according to needs.

[0126] In this embodiment, a sling 250 for cooperating with the sling is provided at the mounting arm 101 , and the sling 250 is located below the carrying plate 240 .

[0127] Through the above structure, when the crossing line is constructed, the tools on the ground can be lifted to the crossbeam 110, which facilitates the construction and improves the practicality of the device.

[0128] In this embodiment, two parallel guide members are provided on the top wall of the load-bearing end, and a docking area is formed between the two guide members;

[0129] The guide member includes a fixed seat 610 provided at the top wall of the bearing end, and a roller 620 is rotatably provided at the fixed seat 610;

[0130] 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.

[0131] Two first mounting seats 210 are provided at the top of the beam 110 and are arranged parallel to the length direction 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. The first mounting seat 210 has a plurality of continuously arranged mounting grooves, and a first insulating roller 220 is rotatably provided in each mounting groove.

[0132] 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.

[0133] Seen in Figure 4 and Figure 5 In this embodiment, a second mounting seat 410 is provided on the top wall of the protective member 130 at the center along the length direction of the beam 110 , and a second insulating roller 420 is rotatably provided on the second mounting seat 410 . The second mounting seat 410 is located between the two first mounting seats 210 .

[0134] 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 with the load-bearing cable 1110 , thereby avoiding wear of the load-bearing cable 1110 .

[0135] It is understood 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.

[0136] Example 4

[0137] Seen in Figure 9 This embodiment provides an anti-pullback mechanism, which differs from the third embodiment in that: the folding beam mechanism is provided with a detachable hanger 230 for mounting the first pulley 1180 and the second pulley 1190; the folding beam mechanism is provided with an anti-pullback mechanism at a position corresponding to the hanger 230; the anti-pullback mechanism includes an anti-pullback mechanism body 700; the anti-pullback mechanism body 700 includes a through-hole 810; the through-hole 810 has a through-hole for passing the load-bearing rope 1110 or the loop rope 1120; a plurality of one-way limiting components 830 are slidably and equidistantly provided at the through-hole; the plurality of one-way limiting components 830 jointly limit the load-bearing rope 1110 or the loop rope 1120;

[0138] The one-way limiting assembly 830 includes an adjusting member 910, and a pressure roller 930 is rotatably provided at one end of the adjusting member 910 located in the through cavity. The outer wall of the pressure roller 930 has a flexible layer that contacts the load-bearing rope 1110 or the circulating rope 1120. The adjusting member 910 has an installation cavity 1010, and the installation cavity 1010 is provided with a positioning member 940 for adjusting the one-way rolling of the pressure roller 930 or limiting the pressure roller 930.

[0139] An anti-pullback mechanism disclosed in the present invention, through the provision of multiple one-way limit components 830, can perform one-way rolling of the load-bearing rope 1110 or the circulating rope 1120 or form a limit on the load-bearing rope 1110 or the circulating rope 1120 according to needs, thereby avoiding the problem that the existing line-laying construction height is high and the load-bearing rope 1110 or the circulating rope 1120 is pulled downward due to its own weight, resulting in certain safety hazards.

[0140] Among them, there are at least three one-way limiting components 830.

[0141] Seen in Figure 9In 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.

[0142] The above structure facilitates locking of 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.

[0143] Seen in Figure 9 or Figure 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.

[0144] The contact area is coaxially arranged with the insertion opening of the first pulley 1180 or the second pulley 1190 .

[0145] 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 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 component 830.

[0146] Seen in Figure 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;

[0147] The positioning member 940 includes a sliding member 1020 which is slidably arranged in the installation cavity 1010, and a block 1030 that cooperates 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 that passes 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.

[0148] Through the above structure, the positioning member 940 is always in a one-way locked rotation state with respect to the pressure 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 pressure roller 930, which causes the load-bearing rope 1110 or the circulating rope 1120 to be pulled downward due to its own weight.

[0149] Seen in Figure 10 or Figure 11In this embodiment, the outer wall of the pressure 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.

[0150] Through the above structure, the outer teeth of the pressing roller 930 can press the clamping block 1030 upward along the inclined surface of the clamping block 1030, thereby achieving one-way rolling.

[0151] Seen in Figure 10 or Figure 11 In this embodiment, a sliding 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 sliding 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 passes through the threaded hole and is threadedly arranged on the slider 952.

[0152] 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.

[0153] Seen in Figure 10 or Figure 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.

[0154] 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.

[0155] Seen in Figure 9 or Figure 12 In this embodiment, an extension arm 850 is provided at the penetrating ring 810 , and a mounting member 860 is rotatably provided at the extension arm 850 .

[0156] Through the above structure, it is convenient to cooperate with the pay-out 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 pay-out of the load-bearing rope 1110 or the circulating rope 1120, thereby improving the applicability of this mechanism.

[0157] Seen in Figure 11 In this embodiment, a positioning rod 1070 is formed at the bottom wall of the handle 1050, and 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 socket 1060;

[0158] A first protrusion 950 is formed on the side walls of both sides of the adjusting member 910 . A plugging hole 960 corresponding to the plugging hole 1060 is formed on the first protrusion 950 . The plugging hole 960 and the plugging hole 1060 are connected by a pin to limit the positioning member 940 .

[0159] Through the above structure, the one-way rolling limit direction of the carrying rope 1110 or the circulating rope 1120 can be adjusted or the carrying 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.

[0160] It is understandable that when the unidirectional rolling direction of the carrying rope 1110 or the loop rope 1120 needs to be changed, it is sufficient to pull it upward and rotate the positioning member 940 90 degrees to reset it. The unidirectional rolling direction can be changed by simply adjusting the direction of the adjustment member 910, which facilitates the direction change during disassembly and provides safety during disassembly.

[0161] When the load-bearing rope 1110 or the circulating rope 1120 needs to be limited, the positioning member 940 is pressed downward, and the pin is inserted into the insertion hole 960 and the insertion hole 1060 to complete the limitation of the positioning member 940.

[0162] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on one or several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the scope of protection of the present application.

[0163] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The embodiments shown in the embodiments are only part of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above and, without departing from the purpose of the present invention, designs a structure and embodiment similar to the technical solution without creatively designing, they shall fall within the scope of protection of the present invention.

Claims

1. An anti-pullback mechanism, characterized in that: The anti-pullback mechanism body (700) includes a threading ring (810), the threading ring (810) has a through cavity for a load-bearing rope (1110) or a circulating rope (1120) to pass through, and a plurality of one-way limiting components (830) are slidably and equidistantly provided in the through cavity, and the plurality of one-way limiting components (830) jointly form a limit for the load-bearing rope (1110) or the circulating rope (1120); The one-way limiting assembly (830) comprises an adjusting member (910), wherein one end of the adjusting member (910) located in the through cavity is rotatably provided with a pressing roller (930), an outer wall of the pressing roller (930) having a flexible layer in contact with a load-bearing rope (1110) or a circulating rope (1120), an installation cavity (1010) being provided in the adjusting member (910), and a positioning member (940) for adjusting the one-way rolling of the pressing roller (930) or limiting the position of the pressing roller (930) being provided in the installation cavity (1010); The adjusting member (910) has a rotating cavity (920) for mounting the pressing roller (930) and communicating with the mounting cavity (1010); The positioning member (940) includes a sliding member (1020) slidably arranged in the installation cavity (1010), a block (1030) cooperating with the pressing roller (930) is formed at one end of the sliding member (1020) corresponding to the rotating cavity (920), a handle (1050) penetrating the installation cavity (1010) is formed at the other end of the sliding member (1020), and 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); The outer wall of the pressing 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; A positioning rod (1070) is formed at the bottom wall of the pull 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 pull handle (1050), and the pull handle (1050) has a socket (1060); First convex portions (950) are formed on the side walls on both sides of the adjusting member (910), and plug holes (960) corresponding to the plug holes (1060) are formed on the first convex portions (950). The plug holes (960) and the plug holes (1060) are connected by a pin to limit the positioning member (940).

2. The anti-pullback mechanism according to claim 1, characterized in that: A through groove (820) for installing the one-way limiting 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 limiting assembly (830).

3. The anti-pullback mechanism according to claim 1, characterized in that: A contact area is formed between the multiple one-way limiting components (830) for being coaxially arranged with the through cavity for the support rope (1110) or the circulating rope (1120) to pass through, and the contact area is used to cooperate with the outer wall of the support rope (1110) or the circulating rope (1120).

4. The anti-pullback mechanism according to claim 1, characterized in that: A sliding 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 sliding groove (951) and a fastening bolt (1090); 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).

5. The anti-pullback mechanism according to claim 4, characterized in that: A clamping portion (953) is formed on the side wall of the slider (952) and matches the side wall of the through groove (820).

6. The anti-pullback mechanism according to claim 1, characterized in that: An extension arm (850) is provided at the penetration ring (810), and a mounting member (860) is rotatably provided at the extension arm (850).

7. A mobile transmission line crossing wire-string vehicle, comprising a transport vehicle, a hydraulic telescopic mechanical arm articulated on the transport vehicle, a folding beam mechanism provided at the top of the hydraulic telescopic mechanical arm, the folding beam mechanism having a detachable hanger (230) for mounting a first pulley (1180) and a second pulley (1190), and a pull-back prevention mechanism as described in any one of claims 1 to 6 detachably provided at the corresponding position of the folding beam mechanism and the hanger (230).

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