Cable-stayed crossing frame device based on planar four-bar mechanism

Abstract

The invention discloses a cable-stayed crossing frame device based on a planar four-bar mechanism, and the device comprises two rows of crossing frame bodies, and the tops of the two rows of crossing frame bodies are laid with an insulating sealing net. Each crossing frame body comprises supporting longitudinal rods, supporting transverse rods and a rectangular base, an insulating rod is hinged between the tops of every two adjacent supporting longitudinal rods, and an insulating sealing net is arranged between the insulating rods at the tops of the two rows of crossing frame bodies; stay wires are arranged at the tops of the supporting longitudinal rods at the edges of the same sides of the two rows of crossing frame bodies respectively, winches are arranged at the other ends of the stay wires, and guide wheels are arranged between the crossing frame bodies and the winches; and a stable supporting structure is arranged on the supporting longitudinal rod. According to the cable-stayed spanning frame device based on the plane four-bar mechanism, the four-bar mechanism is formed by arranging the transverse bar hinges and the longitudinal bar hinges, the whole spanning frame is erected on the ground, the whole spanning frame is pulled up through the pull ropes after the spanning frame is erected on the ground, and the high-altitude operation amount of workers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of spanning wire construction in electric power engineering, and more specifically to an inclined-stayed spanning frame device based on a planar four-bar mechanism. Background Art

[0002] During construction, high-voltage lines often cross highways, high-speed railways, power lines, etc. Crossing construction is extremely difficult in power line construction. During construction, the method of closing the net with a spanning frame is usually adopted. However, at present, spanning construction generally relies on manual labor, and is usually carried out by a large number of high-altitude operations. Most of them are built by setting up bamboo, logs or steel pipe spanning frames, with a low degree of mechanization and low construction efficiency. A large number of manual labor is required for high-altitude operations during the erection and dismantling process. On the one hand, there are great safety risks in the large number of high-altitude operations during the operation. On the other hand, the safety and stability of the spanning frame is restricted by the materials, which is not conducive to the overall safety control of the project.

[0003] In order to improve the level of mechanization and intelligence of construction, reduce the labor intensity of construction personnel, replace people with mechanization and reduce people with intelligence, and reflect the development concept of safety first, it has become the general trend of power grid construction. Therefore, based on the current situation of power line construction, a diagonal-stayed spanning frame system based on a planar four-bar mechanism is proposed, which is of great significance in reducing high-altitude operations, reducing labor input, and reducing safety risks. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a diagonal-stayed crossing frame device based on a planar four-bar mechanism, which can quickly assemble and disassemble the crossing frame body on the ground, thereby providing convenience for crossing construction and improving the safety of the operation.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

[0006] A diagonal-stayed spanning frame device based on a planar four-bar mechanism comprises two rows of spanning frame bodies vertically arranged on the ground, the two rows of spanning frame bodies are arranged in parallel, and insulating sealing nets are laid on the tops of the two rows of spanning frame bodies; the spanning frame body comprises a plurality of supporting longitudinal rods vertically arranged on the ground, a plurality of supporting cross rods hinged laterally between the supporting longitudinal rods, and a rectangular base hinged at the bottom of the supporting longitudinal rods for fixing the spanning frame body to the ground, mounting holes for fixing the rectangular base to the ground by bolts are respectively provided at the four corners of the rectangular base, an insulating rod is hinged between the tops of two adjacent supporting longitudinal rods, and the insulating sealing nets are arranged on the insulating The tops of the supporting longitudinal rods at the same side edges of the two rows of crossing frame bodies are respectively provided with pulling wires for pulling up the crossing frame body, and the other ends of the pulling wires are provided with winches for providing pulling power, and the middle position between the crossing frame body and the winch is provided with guide wheels for lifting the pulling wires at a certain angle so that the pulling wires and the supporting longitudinal rods of the crossing frame body remain vertical; two pin holes are vertically provided at the connection of the movable hinge between the supporting longitudinal rod and the rectangular base, wherein the pin is inserted into the lower pin hole to realize the rotation of the supporting longitudinal rod, and the stop pin is inserted into the upper pin hole after the supporting longitudinal rod is stood up to realize the limitation of the longitudinal rod; a stabilizing structure for stabilizing the crossing frame body is provided on the supporting longitudinal rod.

[0007] To further optimize the technical solution, the stable supporting structure includes a diagonal tie rod arranged on the inner side of the lower part of the supporting longitudinal rod and a fixed pull rope arranged on the outer side of the top of the supporting longitudinal rod, and the other end of the fixed pull rope is provided with an anchor nail inserted into the ground.

[0008] To further optimize the technical solution, a spring sleeve is arranged between the supporting longitudinal rod and the rectangular base for shock absorbing the crossing frame body, the bottom end of the spring sleeve is connected to the rectangular base via a set of movable hinges, the bottom end of the supporting longitudinal rod is inserted into the spring sleeve, and a damping spring is arranged inside the spring sleeve for buffering the impact force of the supporting longitudinal rod.

[0009] To further optimize the technical solution, the bottom of the rectangular base and the spring sleeve are both provided with through holes, the bottom of the movable hinge is provided with a through hole, and the movable hinge is connected to the rectangular base and the spring sleeve respectively by bolts and nuts passing through the through holes.

[0010] To further optimize the technical solution, two vertically opposite long grooves are opened on the spring sleeve, and opposite through holes are opened at both ends of the bottom of the supporting longitudinal rod. The supporting longitudinal rod is connected to the spring sleeve by bolts and nuts passing through the long grooves and the through holes.

[0011] To further optimize the technical solution, the supporting longitudinal rod is composed of a plurality of supporting longitudinal rods, a connecting groove is provided at the end of each supporting longitudinal rod, a connecting piece is inserted into the connecting groove, and the supporting longitudinal rod and the connecting piece are connected by screws.

[0012] To further optimize the technical solution, the insulating rod is connected to the supporting longitudinal rod through movable hinges at both ends.

[0013] To further optimize the technical solution, a fixing ring is provided on the insulating sealing net, and a hook for hanging the fixing ring is provided on the inner side of the insulating rod.

[0014] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0015] The present invention provides an inclined-stayed spanning frame device based on a planar four-bar mechanism. By arranging horizontal and vertical rod hinges to form a four-bar mechanism, the spanning frame can be built on the ground as a whole. After the construction on the ground is completed, the entire spanning frame is pulled up by a pull rope. Workers do not need to climb up to perform high-altitude operations, which reduces the workload of workers, reduces work risks, and improves work efficiency. By arranging pull wires and inclined-stayed rod mechanisms inside and outside the spanning frame, the stability of the spanning frame can be increased, effectively preventing the occurrence of power production safety accidents caused by loose connection of grounding wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic structural diagram of the rectangular base and the spring sleeve part of the present invention;

[0018] Figure 3 It is a structural schematic diagram of the insulating cross bar connection part of the present invention;

[0019] Figure 4 It is a partial enlarged view of the connecting portion of the supporting longitudinal rod of the present invention;

[0020] Figure 5 It is a schematic structural diagram of the spanning frame of the present invention when it is erected.

[0021] Among them: 1. Rectangular base, 2. Active hinge, 3. Pin, 4. Spring sleeve, 5. Damping spring, 6. Support longitudinal rod, 7. Support cross rod, 8. Connector, 9. Screw, 10. Insulating rod, 11. Fixed pull rope, 12. Anchor nail, 13. Diagonal rod, 14. Insulating sealing net, 15. Guide wheel, 16. Pull wire, 17. Winch. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] A diagonal-stayed spanning frame device based on a planar four-bar mechanism, combined with Figures 1 to 4As shown, it includes two rows of spanning frame bodies vertically arranged on the ground, the two rows of spanning frame bodies are arranged in parallel, and the tops of the two rows of spanning frame bodies are laid with insulating sealing nets 14.

[0024] The frame body of the crossing frame includes supporting longitudinal rods 6, supporting cross rods 7 and a rectangular base 1. The supporting longitudinal rods 6 are arranged in a plurality of pieces and are vertically arranged on the ground. The supporting cross rods 7 are arranged in a plurality of pieces and are laterally hinged between the supporting longitudinal rods 6. The rectangular base 1 is hinged at the bottom of the supporting longitudinal rods 6 and is used to fix the frame body of the crossing frame on the ground. Mounting holes are respectively provided at the four corners of the rectangular base 1, which are used to fix the rectangular base to the ground by bolts. An insulating rod 10 is hinged between the tops of two adjacent supporting longitudinal rods 6. A fixing ring is provided on the insulating sealing net 14. A hook is provided on the inner side of the insulating rod for hanging the fixing ring. The insulating sealing net 14 is laid between the insulating rods at the tops of two rows of the crossing frame bodies.

[0025] A spring sleeve 4 is arranged between the supporting longitudinal rod 6 and the rectangular base 1. The bottom end of the spring sleeve 4 is connected to the rectangular base 1 through a set of movable hinges 2. The bottom end of the supporting longitudinal rod 6 is inserted into the spring sleeve. A damping spring 5 is arranged inside the spring sleeve 4 to buffer the impact force of the supporting longitudinal rod.

[0026] Through holes are provided at the bottom of the rectangular base 1 and the spring sleeve 4, and a through hole is provided at the bottom of the movable hinge 2. The movable hinge is connected to the rectangular base and the spring sleeve by bolts and nuts passing through the corresponding through holes respectively. Two pin holes are vertically provided at the connection of the movable hinge 2 between the spring sleeve 4 and the rectangular base 1, and the pin 3 is inserted into the lower pin hole to realize the rotation of the spring sleeve. After the supporting longitudinal rod is erected, the stop pin is inserted into the upper pin hole to realize the positioning of the spring sleeve.

[0027] Two vertical long grooves are provided on the spring sleeve 4, and the two vertical grooves are arranged opposite to each other. Relative through holes are provided at both ends of the bottom of the supporting longitudinal rod 6, and the through holes correspond to the long grooves provided on the spring sleeve. The supporting longitudinal rod is connected to the spring sleeve by bolts passing through the through holes and the long grooves, and fixed by nuts. At this time, the supporting longitudinal rod can slide up and down along the long grooves on the spring sleeve. When the supporting longitudinal rod is subjected to impact force, it is buffered by the damping spring.

[0028] The supporting longitudinal rod 6 and the supporting cross rod 7 are connected in a hinged manner. Through holes are opened at both ends of the supporting cross rod 7, and holes are also opened at the corresponding positions of the supporting longitudinal rod 6. Pins pass through the holes on the supporting cross rod and the supporting longitudinal rod to form a hinge, thereby forming a four-bar linkage for folding.

[0029] The supporting longitudinal rods 6 are in the form of a combination of multiple rods. A connecting groove is opened at the end of each supporting longitudinal rod, and a connecting piece 8 is inserted into the connecting groove. The supporting longitudinal rods 6 and the connecting piece 8 are connected by screws 9. The number of supporting longitudinal rod connections can be adjusted according to the height requirements of the crossing frame, thereby increasing the flexibility of the crossing frame.

[0030] The insulating rod 10 is connected to the supporting longitudinal rod 6 through the movable hinges 2 at both ends. Threaded holes are provided on the left and right end surfaces of the insulating rod 10. The movable hinges are set in the threaded holes at both ends of the insulating rod through bolts. The two fixed movable hinges on the left and right are then hinged to the other two movable hinges through pins. Finally, the movable hinges are fixed to the supporting longitudinal rod 6 through T-nuts to realize the hinge connection between the insulating rod and the supporting longitudinal rod.

[0031] A pull wire 16 is provided on the top of the supporting longitudinal rod 6 at the same side edge of the two rows of crossing frame bodies, and a winch 17 is provided at the other end of the pull wire 16 to provide pulling power. A guide wheel 15 is provided in the middle position between the crossing frame body and the winch 17 to lift the pull wire and move the angle so that the pull wire and the supporting longitudinal rod of the crossing frame body remain vertical, which is convenient for exerting force to pull the crossing frame body from the ground.

[0032] A stable support mechanism is provided on the supporting longitudinal rod 6, which is used to stabilize the spanning frame after it is pulled up. The stable mechanism includes an inclined rod 13 and a fixed pull rope 11. The inclined rod 13 is arranged on the inner side of the lower part of the supporting longitudinal rod and is used to provide auxiliary support for the supporting longitudinal rod. The fixed pull rope 11 is arranged on the top outer side of the supporting longitudinal rod 6. The other end of the fixed pull rope 11 is provided with an anchor 12. The anchor 12 is used to be inserted into the ground. The rope and the anchor cooperate to fix the spanning frame. Before the spanning frame is erected, the pull wire and one end of the inclined rod are first fixed to the point where the frame needs to be fixed. After the spanning frame is erected, the stop pin is inserted to stop the spanning frame from rotating, and then the other end of the pull wire and the inclined rod are fixed to the ground with the anchor. When the spanning frame is dismantled after use, the ground anchor is first removed, the stop pin is taken out, and then the frame is laid down, and then the pull wire and the inclined rod are removed.

[0033] The structural schematic diagram of the present invention when pulled up is as follows Figure 5 As shown, when in use, first build the frame of the crossing frame on the ground, then connect the pulling wires to the front supporting longitudinal rods of the frame and the winch respectively, and adjust the force angle through the guide wheels. Finally, by rotating the winch, relying on the structural characteristics of the screw rod mechanism of the crossing frame, the frame of the crossing frame is pulled up from the fallen state. After pulling up, insert the stop pin into the small hole above the movable hinge at the bottom, and use the pulling rope, anchor nails and diagonal rods to fix the front, rear, left and right supporting longitudinal rods of the crossing frame to ensure the firmness of the crossing frame.

Claims

1. A diagonal-stayed spanning frame device based on a planar four-bar mechanism, characterized in that: The invention comprises two rows of spanning frame bodies vertically arranged on the ground, the two rows of spanning frame bodies are arranged in parallel, and the tops of the two rows of spanning frame bodies are paved with insulating sealing nets (14); the spanning frame bodies comprise a plurality of supporting longitudinal rods (6) vertically arranged on the ground, a plurality of supporting transverse rods (7) transversely hinged between the supporting longitudinal rods (6), and a rectangular base (1) hinged at the bottom of the supporting longitudinal rods (6) for fixing the spanning frame bodies on the ground, the four corners of the rectangular base (1) are respectively provided with mounting holes for fixing the rectangular base on the ground by bolts, an insulating rod (10) is hinged between the tops of two adjacent supporting longitudinal rods (6), and the insulating sealing net is arranged between the insulating rods (10) at the tops of the two rows of spanning frame bodies; the supporting longitudinal rods at the same side edges of the two rows of spanning frame bodies are provided with insulating sealing nets; A pulling wire (16) for pulling up the main body of the crossing frame is arranged at the top of the rod (6), and a winch (17) for providing pulling power is arranged at the other end of the pulling wire (16). A guide wheel (15) for lifting the pulling wire at a certain angle so that the pulling wire (16) and the supporting longitudinal rod (6) of the crossing frame body are kept vertical is arranged in the middle position between the crossing frame body and the winch (17); two pin holes are vertically arranged at the connection of the movable hinge (2) between the supporting longitudinal rod (6) and the rectangular base (1), wherein the pin (3) is inserted into the lower pin hole to realize the rotation of the supporting longitudinal rod (6), and the stop pin is inserted into the upper pin hole after the supporting longitudinal rod is erected to realize the limitation of the longitudinal rod; a stable supporting structure for stabilizing the frame of the crossing frame is arranged on the supporting longitudinal rod (6).

2. The inclined-stayed spanning frame device based on a planar four-bar mechanism according to claim 1 is characterized in that: The stable support structure comprises a diagonal tie rod (13) arranged obliquely downward on the inner side of the lower part of the supporting longitudinal rod (6) and a fixed pull rope (11) arranged on the outer side of the top of the supporting longitudinal rod (6), and the other end of the fixed pull rope (11) is provided with an anchor nail (12) inserted into the ground.

3. The inclined-stayed spanning frame device based on a planar four-bar mechanism according to claim 1 is characterized in that: A spring sleeve (4) for reducing shock to the spanning frame body is arranged between the supporting longitudinal rod (6) and the rectangular base (1); the bottom end of the spring sleeve (4) is connected to the rectangular base (1) via a set of movable hinges (2); the bottom end of the supporting longitudinal rod (6) is inserted into the spring sleeve (4); and a damping spring (5) for buffering the impact force of the supporting longitudinal rod is arranged inside the spring sleeve (4).

4. The inclined-stayed spanning frame device based on a planar four-bar mechanism according to claim 3 is characterized in that: The bottoms of the rectangular base (1) and the spring sleeve (4) are both provided with through holes, the bottom of the movable hinge (2) is also provided with a through hole, and the movable hinge (2) is connected to the rectangular base (1) and the spring sleeve (4) respectively by bolts and nuts passing through the through holes.

5. The inclined-stayed spanning frame device based on a planar four-bar mechanism according to claim 3 is characterized in that: The spring sleeve (4) is provided with two vertically opposite long slots, and the bottom ends of the supporting longitudinal rod (6) are provided with opposite through holes. The supporting longitudinal rod (6) is connected to the spring sleeve (4) via bolts and nuts passing through the long slots and the through holes.

6. The inclined-stayed spanning frame device based on a planar four-bar mechanism according to claim 1 is characterized in that: The supporting longitudinal rod (6) is composed of a plurality of supporting longitudinal rods, each supporting longitudinal rod has a connecting groove at its end, a connecting piece (8) is inserted into the connecting groove, and the supporting longitudinal rod (6) and the connecting piece are connected via screws (9).

7. The inclined-stayed spanning frame device based on a planar four-bar mechanism according to claim 1 is characterized in that: The insulating rod (10) is connected to the supporting longitudinal rod (6) via movable hinges (2) at both ends.

8. The inclined-stayed spanning frame device based on a planar four-bar mechanism according to claim 1 is characterized in that: The insulating sealing net (14) is provided with a fixing ring, and the inner side of the insulating rod (10) is provided with a hook for hanging the fixing ring.

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