A single-arm wing-spreading type spanning frame

Abstract

The present invention relates to a single-arm spreading type spanning frame, which includes a lattice type spanning frame body and a main beam. The main beam spans across the lattice type spanning frame body. The main beam includes a main beam body and a spreading mechanism. Among them, the spreading mechanism includes a driving module, a protective net, multiple wing rods and wing mounting seats. The multiple wing rods are symmetrically hinged to both sides of the main beam body through the wing mounting seats. One end of each wing rod can rotate horizontally around the wing mounting seat. The protective net is suspended under the wing rods. The driving module is connected to the wing rods to drive the wing rods to rotate and reset synchronously. Compared with the prior art, the present invention has the advantages of realizing rapid construction and assembly, one-step net sealing, and convenient and fast construction, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power line construction, and particularly to a single-arm spreading type spanning frame. Background Art

[0002] When constructing the stringing of high-voltage overhead lines across important facilities such as high-speed railways and expressways, generally, methods such as using bamboo, steel pipes, and steel lattice structures are used to form the spanning frame body, and then a protection net is sealed on the upper part. These methods have certain limitations in terms of height and bearing capacity. For important large-span spanning construction such as high-speed railways and expressways, currently, a lattice type spanning frame composed of tower building gin poles is used, which has the characteristics of strong stability, strong anti-breaking ability, high degree of mechanized construction, and high speed. The protection net between the spanning frames has also appeared in the form of a steel structure main beam replacing the flexible load-bearing rope and a metal structure protection beam replacing the protection rod, each with its own characteristics, but there are still the following deficiencies.

[0003] For example, Chinese Utility Model with the publication number CN206189985U discloses a double-arm hydraulic propulsion type hard-capped lattice type spanning frame, but the docking time of the main arms of this structure is relatively long, occupying the net sealing construction time and taking a long time. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects existing in the above-mentioned prior art and provide a single-arm spreading type spanning frame to achieve rapid docking and net sealing.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A single-arm spreading type spanning frame includes a lattice type spanning frame body and a main beam. The main beam spans across the lattice type spanning frame body. The main beam includes a main beam body and a spreading mechanism. Among them, the spreading mechanism includes a driving module, a protection net, multiple wing rods, and wing mounting seats. The multiple wing rods are symmetrically hinged on both sides of the main beam body through the wing mounting seats. One end of each wing rod can rotate horizontally around the wing mounting seat. The protection net is suspended under the wing rods. The driving module is connected to the wing rods to drive the wing rods to rotate and reset synchronously.

[0007] Furthermore, it also includes two wing connecting rods. All the wing rods on one side of the main beam body are connected by one wing connecting rod. One of the wing rods among the wing rods on each side of the main beam body is the active wing rod, and the rest are driven wing rods. The driving module is connected to the active wing rod to drive the active wing rod to rotate and reset.

[0008] Further, the driving module includes a driving motor, a wire winding disc, a fixed pulley set, a first steel wire rope and a second steel wire rope. The driving motor is arranged at one end of the main beam body. The wire winding disc is connected to the output shaft of the driving motor. Among the wing rods on one side of the main beam body, the one closest to the driving motor is the active wing rod. The fixed pulley set is arranged on one side of the active wing rod and on the opposite side of the driving motor. One end of the first steel wire rope is wound and connected to the wire winding disc, and the other end is connected to the end of the active wing rod. One end of the second steel wire rope is wound and connected to the wire winding disc, and the other end is connected to the end of the active wing rod after passing around the fixed pulley set. The winding directions of the first steel wire rope and the second steel wire rope on the wire winding disc are opposite.

[0009] Further, a corner sensor is provided on the active wing rod.

[0010] Further, the protective net adopts a Dyneema protective net.

[0011] Further, the rotation angle range formed by the wing rod and the main beam body is 5 to 95 degrees.

[0012] Further, the wing rod is a crossbeam frame with a triangular cross-section.

[0013] Further, it includes two lattice-type spanning frame bodies. A rotating mechanism is provided at the top of one lattice-type spanning frame body, and a connecting frame is provided at the top of the other lattice-type spanning frame body. A connecting disc is provided at the lower end of the main beam body for docking with the rotating mechanism, and a balance weight mechanism is provided at one end of the main beam body, and a docking mechanism is provided at the other end for docking with the connecting frame.

[0014] Further, the rotating mechanism includes a rotating motor and a rotating bearing disc that are connected to each other. The rotating bearing disc docks with the connecting disc.

[0015] Further, the docking mechanism includes a height difference adjustment device and a solenoid valve-driven fixator. The fixator is installed at one end of the main beam body through the height difference adjustment device, and the fixator docks with the connecting frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By setting the main beam with a wing spreading mechanism, the present invention realizes the rapid installation of the protective net. By driving the rotation and unfolding of each wing rod through the driving module, one-step net closing can be achieved, which is convenient and fast. At the same time, the spanning frame adopts a modular structure and can be hoisted through the main beam and the lattice-type spanning frame body, and can be reused, improving the mechanical use efficiency.

[0018] 2. The main beam and the two lattice type spanning frame bodies are respectively connected through a rotating mechanism and a connecting frame. During assembly, the main beam is first installed on one lattice type spanning frame body through the rotating mechanism, and then the rotating mechanism is operated so that one end of the main beam can be quickly adapted to and connected to the other lattice type spanning frame body, realizing rapid construction and assembly. Brief Description of the Drawings

[0019] Figure 1 It is a front view structural schematic diagram of the present invention.

[0020] Figure 2 It is a top view structural schematic diagram of the present invention.

[0021] Figure 3 It is a top view structural schematic diagram after the wing spreading mechanism is unfolded.

[0022] Figure 4 It is a side view sectional schematic diagram of the main beam.

[0023] Figure 5 It is a schematic diagram of the working process of the present invention.

[0024] Figure 6 It is a schematic diagram of the principle of the control system.

[0025] Reference Signs: 1. Lattice type spanning frame body; 11. Rotating mechanism; 12. Connecting frame; 2. Main beam; 21. Main beam body; 22. Wing spreading mechanism; 221. Wing rod; 221a. Active wing rod; 221b. Driven wing rod; 222. Wing mounting seat; 223. Driving motor; 224. Winding disc; 225. Fixed pulley group; 226. First steel wire rope; 227. Second steel wire rope; 228. Wing connecting rod; 23. Balance weight mechanism; 24. Docking mechanism; 25. Connecting disc. Detailed Embodiments

[0026] The present invention will be described in detail below with reference to the drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and the detailed implementation manners and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0027] As Figures 1 to 4As shown in the figure, this embodiment provides a single-arm wing-spreading type spanning frame, which includes a lattice type spanning frame body 1 and a main beam 2. The main beam 2 spans across the lattice type spanning frame body 1. Specifically, it is composed of two lattice type spanning frame bodies 1 in modular form and one main beam 2. A connection plate 25 is provided at the lower end of the main beam 2, and a balance weight mechanism 23 and a docking mechanism 24 are respectively provided at both ends of the main beam 2. A rotating mechanism 11 is provided at the top of the lattice type spanning frame body 1 on the left side. The rotating structure includes a rotating motor and a rotating bearing plate that are connected to each other. The rotating bearing plate is docked with the connection plate 25 to support the main beam 2. A connecting frame 12 is provided at the top of the lattice type spanning frame body 1 on the right side. The docking mechanism 24 includes a height difference adjusting device and a solenoid valve-driven fixator. The fixator is installed at one end of the main beam body 21 through the height difference adjusting device, and the fixator is used to form a docking with the connecting frame 12.

[0028] The main beam 2 includes a main beam body 21 and a wing-spreading mechanism 22. The cross-section of the main beam body 21 is rectangular and is a segmented structure, which is connected into a whole with bolts. The wing-spreading mechanism 22 includes a driving module, a protective net, multiple wing rods 221 and wing mounting seats 222. The driving module is installed on the upper plane of the main beam body 21 and is located at the left end of the main beam body 21. The wing mounting seats 222 are symmetrically distributed and fixed on both sides of the main beam body 21. Each wing rod 221 is a crossbeam frame with a triangular cross-section. One end of it is installed on the wing rod 221 mounting seat and forms a horizontal hinge with the main beam body 21, that is, one end of each wing rod 221 can rotate horizontally around the wing mounting seat 222. The rotation angle formed by the wing rod 221 and the main beam body 21 has a certain limit, generally in the range of 5 to 95 degrees. All the wing rods 221 on one side of the main beam body 21 are connected by a wing link 228. One of the wing rods 221 among the wing rods 221 on each side of the main beam body 21 is the active wing rod 221a, and the rest are driven wing rods 221b. The driving module drives the active wing rod 221a to rotate, and the active wing rod 221a drives the rest of the driven wing rods 221b to rotate and reset synchronously through the wing link 228.

[0029] The driving module includes a driving motor 223, a wire winding disc 224, a fixed pulley set 225, a first steel wire rope 226 and a second steel wire rope 227. The wire winding disc 224 is connected to the output shaft of the driving motor 223. In this embodiment, the wing rod 221 closest to the driving motor 223 on one side of the main beam body 21 is the active wing rod 221a, that is, the two wing rods 221 at the leftmost end are the active wing rods 221a. The fixed pulley set 225 is arranged on the right side of the active wing rod 221a, that is, on the opposite side of the driving motor 223. One end of the first steel wire rope 226 is wound and connected to the wire winding disc 224, and the other end is directly connected to the end of the active wing rod 221a; one end of the second steel wire rope 227 is wound and connected to the wire winding disc 224, and the other end is connected to the end of the active wing rod 221a after passing around the fixed pulley set 225; the winding directions of the first steel wire rope 226 and the second steel wire rope 227 on the wire winding disc 224 are opposite. Thus, when the driving motor 223 rotates forward, the driving motor 223 pulls the active wing rod 221a to open through the first steel wire rope 226. At this time, the first steel wire rope 226 is wound tightly and the second steel wire rope 227 is wound loosely; when the driving motor 223 rotates in reverse, the driving motor 223 pulls the active wing rod 221a to reset through the second steel wire rope 227. At this time, the first steel wire rope 226 is wound loosely and the second steel wire rope 227 is wound tightly.

[0030] The protective net is a Dyneema protective net suspended under the wing rod 221. When the wing rod 221 is in the unfolded state, the protective net is unfolded simultaneously to complete the netting.

[0031] The working process of this embodiment is as follows:

[0032] As Figure 5 shown, after the main beam 2 is assembled on the ground, it is hoisted. There are hoisting holes installed on the upper part of the main beam 2. The main beam 2 and the lattice type spanning frame body 1 with a rotating mechanism 11 installed on the top are fixed, and are connected and fixed by bolts and steel pins. Then, the counterweight block is hoisted by the balance counterweight mechanism 23 for balance fixation.

[0033] When the main beam 2 and the lattice type spanning frame body 1 with a rotating mechanism 11 installed on the top are fixed, the rotating bearing disc is driven to rotate by the rotating motor of the rotating mechanism 11, so that the entire main beam 2 quickly rotates to the top connecting frame 12 of the opposite spanning frame body. Then, the height difference adjusting device of the docking mechanism 24 at the end of the main beam 2 adjusts the fixator to eliminate the height difference of the main beam 2. Finally, the fixing device driven by the solenoid valve is connected to the connecting frame 12 to form an integral body. After the state monitoring devices at each position are normal, the wing spreading mechanism 22 is started.

[0034] When the driving motor 223 of the wing spreading mechanism 22 rotates forward, it will pull the active wing rod 221a to open through the first steel wire rope 226. The active wing rod 221a drives the driven wing rod 221b to unfold together through the wing connecting rod 228, so that the protective net hanging below the wing rod 221 is unfolded, realizing efficient and rapid net closing. When it is necessary to retract the protective net, the driving motor 223 rotates reversely and will pull the active wing rod 221a to close and reset through the second steel wire rope 227. The active wing rod 221a drives the driven wing rod 221b to reset together through the wing connecting rod 228.

[0035] As Figure 6 shown, in this embodiment, the balance weight mechanism 23, the rotating mechanism 11, the docking mechanism 24 and the wing spreading mechanism 22 can be controlled by operating the control system. Each system has a state switch and the like as a state monitoring sensor. For example, the state switch provided on the active wing rod 221a is an angle sensor. Each operation needs to meet the requirements of the previous state before the relevant operation can be executed. When the installation state is selected, the mechanisms are sequentially restricted. For example, when the state of the balance weight mechanism 23 does not meet the requirements, the rotating mechanism 11 and the like cannot be started. When the removal state is selected, the mechanisms are reversely restricted. For example, when the wing spreading mechanism 22 is not retracted in place and the state meets the requirements, the docking mechanism 24 and the like cannot be started.

[0036] In summary, this embodiment realizes rapid assembly construction of one-key rotation to the opposite side span, one-key adjustment of height difference and locking, and one-key completion of the protective net spreading in place.

[0037] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A single-arm wing-spreading type spanning frame, comprising a lattice type spanning frame body (1) and a main beam (2), wherein the main beam (2) spans across the lattice type spanning frame body (1), and is characterized in that, The main beam (2) includes a main beam body (21) and a wing mechanism (22). Among them, the wing mechanism (22) includes a driving module, a protective net, multiple wing rods (221) and wing mounting seats (222). The multiple wing rods (221) are symmetrically hinged to both sides of the main beam body (21) through the wing mounting seats (222). One end of each wing rod (221) can rotate horizontally around the wing mounting seat (222). The protective net is suspended under the wing rods (221). The driving module is connected to the wing rods (221) to drive the wing rods (221) to rotate and reset synchronously; It further includes two wing connecting rods (228). All the wing rods (221) on one side of the main beam body (21) are connected by one wing connecting rod (228). One of the wing rods (221) among the wing rods (221) on each side of the main beam body (21) is a driving wing rod (221a), and the rest are driven wing rods (221b). The driving module is connected to the driving wing rod (221a) to drive the driving wing rod (221a) to rotate and reset; The driving module includes a driving motor (223), a wire winding disc (224), a fixed pulley group (225), a first steel wire rope (226) and a second steel wire rope (227). The driving motor (223) is arranged at one end of the main beam body (21). The wire winding disc (224) is connected to the output shaft of the driving motor (223). The wing rod (221) closest to the driving motor (223) on one side of the main beam body (21) is the driving wing rod (221a). The fixed pulley group (225) is arranged on one side of the driving wing rod (221a) and on the opposite side of the driving motor (223). One end of the first steel wire rope (226) is wound and connected to the wire winding disc (224), and the other end is connected to the end of the driving wing rod (221a). One end of the second steel wire rope (227) is wound and connected to the wire winding disc (224), and the other end is connected to the end of the driving wing rod (221a) after passing around the fixed pulley group (225). The winding directions of the first steel wire rope (226) and the second steel wire rope (227) on the wire winding disc (224) are opposite; The protective net described above uses a Dyneema protective net.

2. The single-arm wing-spreading type spanning frame according to claim 1, wherein A corner sensor is provided on the driving wing rod (221a).

3. The single-arm wing-spreading type spanning frame according to claim 1, characterized in that, The range of the rotation angle formed by the wing rod (221) and the main beam body (21) is 5 to 95 degrees.

4. The single-arm wing-spreading type spanning frame according to claim 1, characterized in that, The wing rod (221) is a crossbeam frame with a triangular cross-section.

5. The single-arm wing-spreading type spanning frame according to claim 1, characterized in that, It includes two lattice type spanning frame bodies (1). A rotating mechanism (11) is provided at the top of one of the lattice type spanning frame bodies (1), and a connecting frame (12) is provided at the top of the other lattice type spanning frame body (1). A connecting disc (25) is provided at the lower end of the main beam body (21) for docking with the rotating mechanism (11). And a balance weight mechanism (23) is provided at one end of the main beam body (21), and a docking mechanism (24) is provided at the other end for docking with the connecting frame (12).

6. The single-arm wing-spreading type spanning frame according to claim 5, wherein The rotating mechanism (11) includes a rotating motor and a rotating bearing disc connected to each other. The rotating bearing disc docks with the connecting disc (25).

7. The single-arm wing-spreading type spanning frame according to claim 5, characterized in that, The docking mechanism (24) includes a height difference adjustment device and a solenoid valve-driven fixator. The fixator is installed at one end of the main beam body (21) through the height difference adjustment device, and the fixator is docked with the connecting frame (12).

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