An automatic combined spanning system

Abstract

The present invention belongs to the field of power transmission and transformation engineering construction, specifically, an automatic combined crossing system, a slewing platform is rotatably connected to the chassis, the lower end of the telescopic main arm is connected to the slewing platform in the working state after completing the erection action, and the upper end of the telescopic main arm is hinged with a sealing network system; the cylinder body of the hydraulic pitch cylinder is hinged to the slewing platform or the telescopic main arm, the piston rod is hinged to the telescopic main arm or the slewing platform, and the two ends of the connecting rod device are respectively hinged to the slewing platform and the telescopic main arm, and the telescopic main arm is driven by the hydraulic pitch cylinder to perform a pitching action relative to the slewing platform; the balancing winch mechanism includes a winch unit and a wire rope, the winch unit is installed on the slewing platform, and is connected to the sealing network system through the wire rope, and the winch unit provides power for the telescopic main arm to be extended and retracted and the sealing network system to be folded or opened. The crossing system of the present invention can be automatically lifted to the working position, with short erection time, high efficiency, and reduced labor costs.

Description

Technical Field

[0001] The present invention belongs to the field of power transmission and transformation engineering construction, specifically an automatic combined crossing system, which is suitable for crossing high-speed railways, two-way four-lane expressways, general roads and crossing high-voltage lines of 220kV and below without power outage during the tension line stringing process of power transmission and transformation engineering. Background Art

[0002] With the continuous development of power grid construction, power lines, high-speed railways, railways, highways, grade roads, important communication lines, etc. of various voltage levels are often crossed during the construction of power grids; the current time-consuming and labor-intensive crossing method has been one of the main bottlenecks restricting power grid construction for many years, especially for high-speed railways, highways and power lines of 220kV and above voltage levels. The approval of road closure or power outage is difficult and takes a long time. If you are not careful during construction, it will affect the normal construction process and cannot be carried out according to the normal construction plan. At the same time, it also brings safety risks to the construction, causing both parties of the crossing to be endangered by potential safety risks. Therefore, it has become an inevitable trend in the industry to adopt efficient and fast crossing schemes to ensure the safe and stable operation of the objects being crossed and the smooth progress of safe crossing construction. The existing crossing frame equipment mainly adopts the use of steel pipes and bamboo to build scaffolding-type crossing frames above the high-voltage lines being crossed, and the use of steel holding poles to form single-column or door-type crossing frames, etc. The construction method of closing the net is adopted above the crossing frame for crossing. During the crossing construction, the assembly and disassembly of the crossing frame consumes a lot of manpower and material resources, has a long cycle, cannot meet the needs of rapid construction, and has low efficiency. Summary of the invention

[0003] In order to solve the problem that the assembly and disassembly of crossing frames during the existing power transmission and transformation project line construction consumes a lot of manpower and material costs, has a long construction period and low efficiency, the purpose of the present invention is to provide an automatic combined crossing system.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] The present invention comprises a chassis, a slewing platform, a hydraulic pitch cylinder, a connecting rod device, a telescopic main arm, a balanced hoisting mechanism and a net closing system, wherein the slewing platform is rotatably connected to the chassis, the lower end of the telescopic main arm is connected to the slewing platform in the working state after completing the erection action, and the upper end of the telescopic main arm is hinged with the net closing system; the cylinder body of the hydraulic pitch cylinder is hinged to the slewing platform or the telescopic main arm, the piston rod is hinged to the telescopic main arm or the slewing platform, the two ends of the connecting rod device are respectively hinged to the slewing platform and the telescopic main arm, and the telescopic main arm is driven by the hydraulic pitch cylinder to perform a pitching action relative to the slewing platform; the balanced hoisting mechanism comprises a hoisting unit and a steel wire rope, the hoisting unit is installed on the slewing platform, and is connected to the net closing system through the steel wire rope, and the hoisting unit provides power for the extension and retraction of the telescopic main arm and the folding or opening of the net closing system;

[0006] Wherein: the connecting rod device includes a connecting rod A and a connecting rod B, one end of the connecting rod A and the connecting rod B are respectively hinged on the rotating platform, and the other end is respectively hinged on the telescopic main arm, and the connecting rod A, the connecting rod B, the telescopic main arm and the rotating platform form a four-bar mechanism; the hydraulic pitch cylinder drives the telescopic main arm to pitch through the four-bar mechanism, thereby realizing that the telescopic main arm is laid down or erected;

[0007] The net-sealing system comprises a net-sealing frame, a net-sealing rod, a net-sealing rope and rollers. The net-sealing frame is hinged to the upper end of the telescopic main arm, and multiple groups of net-sealing rods are arranged in the length direction of the net-sealing frame. The two net-sealing rods in each group are respectively arranged on both sides of the net-sealing frame. The lower end of each net-sealing rod is hinged to the hinge point A on the net-sealing frame, and the upper end is connected to the winch unit through the net-sealing rope or is manually controlled; multiple rollers are arranged on the upper surface of the net-sealing frame along the length direction;

[0008] A protection rod is provided below the net-sealing rod on each side, the upper end of the protection rod is hinged to the net-sealing rod on the same side, the lower end is hinged to the net-sealing frame when the net-sealing rod is in an extended state, and is hinged to the hinge point A when the net-sealing rod is in a retracted state;

[0009] The upper end of the protection rod on each side is hinged to the hinge point B on the upper sealing rod on the same side, and the lower end is hinged to the hinge point C on the sealing frame on that side, and the hinge point C is located below the hinge point B on the same side; when the sealing rod is in a retracted state, the lower end of the protection rod on the lower side of the same side is removed from the hinge point C and then hinged to the hinge point A on the same side;

[0010] The upper end of the sealing rod is inclined upward relative to the lower end;

[0011] The telescopic main arm comprises a basic arm section, a telescopic arm section and a top section. The lower end of the basic arm section is hinged to the rotating platform through a pin shaft in the working state after completing the erection action. The upper end of the basic arm section is connected to one or more telescopic arm sections. When there is one section, the lower end of the telescopic arm section is telescopically connected to the upper end of the basic arm section, and the upper end of the telescopic arm section is telescopically connected to the top section. The extension and retraction of the top section and the telescopic arm section are driven by the hoisting unit; when the telescopic arm section has multiple sections, the telescopic arm sections are telescopically connected to each other and are relatively extended and retracted by the drive of the hoisting unit. The bottom telescopic arm section is telescopically connected to the basic arm section, and the top telescopic arm section is telescopically connected to the top section. The extension and retraction of the top section and each telescopic arm section are driven by the hoisting unit;

[0012] The chassis is a wheeled self-propelled chassis, that is, the chassis is installed on a vehicle and is transported by the vehicle.

[0013] The advantages and positive effects of the present invention are:

[0014] 1. The spanning system of the present invention can be automatically lifted to the working position, with short erection time, high efficiency and reduced labor costs.

[0015] 2. The present invention adopts a wheeled self-propelled chassis combined with an automatically lifting and extending boom system to achieve rapid transportation scheduling and erection of the spanning system.

[0016] 3. The network sealing system of the present invention can prevent the installed cables from sliding sideways and falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a partial schematic diagram of the connection between the telescopic main arm and the rotary platform of the present invention;

[0019] Figure 3 It is a partial schematic diagram of the connection between the telescopic main arm and the network sealing system of the present invention;

[0020] Figure 4 It is a schematic diagram of the folding and opening of the network sealing system of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the working state of the present invention;

[0022] Among them: 1 is chassis, 2 is slewing platform, 201 is hinge ear A, 3 is hydraulic pitch cylinder, 4 is connecting rod device, 401 is connecting rod A, 402 is connecting rod B, 5 is telescopic main arm, 501 is basic arm section, 502 is telescopic arm section, 503 is top section, 504 is hinge ear B, 6 is balance winch mechanism, 601 is pull plate, 602 is winch unit, 603 is wire rope, 7 is net closing system, 701 is net closing frame, 702 is protection rod, 703 is net closing rod, 704 is net closing rope, 705 is roller, 706 is hinge point A, 707 is hinge point B, 708 is hinge point C, 709 is hinge point D. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] like Figures 1 to 4 As shown, the present invention includes a chassis 1, a rotating platform 2, a hydraulic pitch cylinder 3, a connecting rod device 4, a telescopic main arm 5, a balanced hoisting mechanism 6 and a sealing network system 7, wherein the chassis 1 of this embodiment is a wheeled self-propelled chassis, that is, the chassis 1 is installed on a vehicle and is transported and moved by the vehicle, providing a stable basic platform for the crossing system; the rotating platform 2 is rotatably connected to the chassis 1 through a slewing bearing, and the rotating platform 2 can make a 360° rotation relative to the chassis 1 around the center of the slewing bearing; the balanced hoisting mechanism 6 includes a pull plate 601, a hoisting unit 602 and a wire rope 603, and the hoisting unit 602 is installed on the rotating platform 2. The hoisting unit 602 includes multiple hoists, which provide motive force for the telescopic main arm 5 of the crossing system to be extended and retracted and the sealing network system to be folded or opened.

[0025] The lower end of the telescopic main arm 5 is connected to the rotating platform 2 in the working state after the erection action is completed, and the upper end of the telescopic main arm 5 is hinged with a sealing net system 7. The telescopic main arm 5 of this embodiment includes a basic arm section 501, a telescopic arm section 502 and a top section 503. In the working state after the lower end of the basic arm section 501 is completed, the hinge ear B504 at the lower end of the basic arm section 501 is hinged with the hinge ear A201 on the rotating platform 2 through a pin shaft, which plays a role in reinforcing the telescopic main arm 5; the upper end of the basic arm section 501 is connected to one or more telescopic arm sections 502, and the upper end of the telescopic arm section 502 is connected to the top section 503. The telescopic arm section 502 and the top section 503 can be telescoped along the central axis of the telescopic main arm 5 to achieve a variety of height combinations. When the telescopic boom section 502 is a single section, the lower end of the telescopic boom section 502 is telescopically connected to the upper end of the base boom section 501, and the upper end of the telescopic boom section 502 is telescopically connected to the top section 503, and the extension and retraction of the top section 503 and the telescopic boom section 502 are driven by the hoisting unit 602. When the telescopic boom section 502 is a multi-section section, each telescopic boom section 502 is telescopically connected to each other, and is relatively extended and retracted by the drive of the hoisting unit 602, the bottom telescopic boom section 502 is telescopically connected to the base boom section 501, and the top telescopic boom section 502 is telescopically connected to the top section 503, and the extension and retraction of the top section 503 and each telescopic boom section 502 are driven by the hoisting unit 602.

[0026] The slewing platform 2 is hinged to the base arm section 501 of the telescopic main arm 5 through the hydraulic pitch cylinder 3 and the connecting rod device 4. The cylinder body of the hydraulic pitch cylinder 3 is hinged to the slewing platform 2 or the base arm section 501 of the telescopic main arm 5, the piston rod is hinged to the base arm section 501 of the telescopic main arm 5 or the slewing platform 2, and the two ends of the connecting rod device 4 are respectively hinged to the slewing platform 2 and the base arm section 501 of the telescopic main arm 5, and the telescopic main arm 5 is driven to pitch relative to the slewing platform 2 through the hydraulic pitch cylinder 3. The cylinder body of the hydraulic pitch cylinder 3 of this embodiment is hinged to the slewing platform 2, and the piston rod is hinged to the base arm section 501 of the telescopic main arm 5. The connecting rod device 4 of this embodiment includes a connecting rod A401 and a connecting rod B402, one end of the connecting rod A401 and the connecting rod B402 are respectively hinged on the rotating platform 2, and the other end is respectively hinged on the base arm section 501 of the telescopic main arm 5. The connecting rod A401, the connecting rod B402, the base arm section 501 of the telescopic main arm 5 and the rotating platform 2 form a four-bar mechanism. The telescopic main arm 5 can move along the track of the four-bar mechanism through the extension and contraction of the hydraulic pitch cylinder 3, so that the telescopic main arm 5 can pitch relative to the rotating platform 2, thereby realizing that the telescopic main arm 5 is laid down or erected.

[0027] The net closing system 7 includes a net closing frame 701, a protective rod 702, a net closing rod 703, a net closing rope 704 and a roller 705. The net closing frame 701 is hinged to the hinge point D709 on the top section 503 at the upper end of the telescopic main arm 5 through a pin shaft. A pull plate 601 is connected to one end of the net closing frame 701. One end of the wire rope 603 is connected to a winch in the winch unit 602, and the other end is connected to the pull plate 601. The net closing system 7 is controlled to rotate around the hinge point D709 through the pull plate 601, so as to achieve the purpose of adjusting the position of the net closing system 7 and improve the stress condition of the telescopic main arm 5 at the same time. A plurality of groups of net-sealing rods 703 are provided in the length direction of the net-sealing frame 701, and the two net-sealing rods 703 in each group are symmetrically arranged on both sides of the net-sealing frame 701, and the lower end of each net-sealing rod 703 is hinged to the hinge point A706 on the net-sealing frame 701, and the upper end is connected to the winch unit 602 through the net-sealing rope 704 or is manually controlled, and the upper end of the net-sealing rod 703 is inclined upward relative to the lower end; a plurality of rollers 705 are provided on the upper surface of the net-sealing frame 701 along the length direction. A protective rod 702 is provided below each side of the net-sealing rod 703. The upper end of each side protective rod 702 is hinged to the hinge point B707 on the net-sealing rod 703 on the same side, and the lower end is hinged to the hinge point C708 on the net-sealing frame 701 on the same side when the net-sealing rod 703 is in the unfolded state. The hinge point C708 is located below the hinge point B707 on the same side. When the net-sealing rod 703 is in the retracted state, the lower end of the protective rod 702 on the same side is removed from the hinge point C708 and then hinged to the hinge point A706 on the same side. The net-sealing system 7 realizes the effective receiving of fallen objects, and reduces the friction force on the equipment through the rolling contact between the roller 705 and the equipment. The net-sealing rod 703 and the net-sealing frame 701 are hinged by a pin shaft, which can be folded and opened for easy transportation.

[0028] The working principle of the present invention is:

[0029] The present invention is a self-propelled wheeled chassis 1 that moves to the construction site by itself. Figure 5 As shown, during the spanning construction, two spanning systems are respectively arranged on both sides of the spanned object and support it. At this time, the telescopic main arm 5 is in a laid-down state, the telescopic arm section 502 is retracted into the base arm section 501, and the top section 503 is retracted into the telescopic arm section 502. The lower end of the protective rod 702 hinged on each group of sealing rods 703 is removed from the hinge point A706 and hinged to the hinge point C708.

[0030] When working, it is driven by the hydraulic pitch cylinder 3, and the telescopic main arm 5 is erected by the four-bar mechanism formed by the connecting rod A401, the connecting rod B402, the basic arm section 501 and the rotating platform 2; after being erected, the hinge ear B504 at the lower end of the basic arm section 501 is hinged with the hinge ear A201 on the rotating platform 2 through the pin shaft, and the winch unit 602 is used to drive the telescopic arm section 502 and the top section 503 to extend to the required height; after the closing net system 7 is disassembled, it is rotated to the top of the object to be crossed. The winch unit 602 uses the wire rope 603 to unfold each group of closing net rods 703 to prevent the erected cables from falling. After the setting is completed, the rotating platform 2 rotates to the working position. The closing net systems 7 of the two crossing systems are docked to form a set of door-shaped automatic combined crossing system.

[0031] After the erection work is completed, the sealing systems 7 of the two connected crossing systems are separated, the sealing rods 703 are folded, and then the top section 503 and the telescopic arm section 502 are retracted and returned to their original positions; then the connection between the basic arm section 501 and the rotating platform 2 is removed, and the telescopic main arm 5 is laid down using the four-bar mechanism formed by the hydraulic pitch cylinder 3 and the connecting rod A401, the connecting rod B402, the basic arm section 501 and the rotating platform 2.

Claims

1. An automatic combined crossing system, characterized in that: The invention comprises a chassis (1), a slewing platform (2), a hydraulic pitch cylinder (3), a connecting rod device (4), a telescopic main arm (5), a balancing winch mechanism (6) and a net closing system (7), wherein the slewing platform (2) is rotatably connected to the chassis (1), the lower end of the telescopic main arm (5) is connected to the slewing platform (2) in a working state after completing the erection action, and the upper end of the telescopic main arm (5) is hingedly connected to the net closing system (7); the cylinder body of the hydraulic pitch cylinder (3) is hingedly connected to the slewing platform (2) or the telescopic main arm (5), and the piston rod is hingedly connected to the telescopic main arm (5) or the slewing platform ( 2), the two ends of the connecting rod device (4) are respectively hinged to the rotating platform (2) and the telescopic main arm (5), and the telescopic main arm (5) is driven by the hydraulic pitch cylinder (3) to perform a pitching motion relative to the rotating platform (2); the balancing hoisting mechanism (6) comprises a hoisting unit (602) and a steel wire rope (603), the hoisting unit (602) is installed on the rotating platform (2), and is connected to the sealing net system (7) through the steel wire rope (603), and the hoisting unit (602) provides power for the extension and retraction of the telescopic main arm (5) and the folding or opening of the sealing net system (7); The connecting rod device (4) comprises a connecting rod A (401) and a connecting rod B (402), one end of the connecting rod A (401) and the connecting rod B (402) are respectively hinged on the rotating platform (2), and the other end is respectively hinged on the telescopic main arm (5), and the connecting rod A (401), the connecting rod B (402), the telescopic main arm (5) and the rotating platform (2) form a four-bar mechanism; the hydraulic pitch cylinder (3) drives the telescopic main arm (5) to pitch through the four-bar mechanism, thereby realizing that the telescopic main arm (5) is laid down or erected; The net-sealing system (7) comprises a net-sealing frame (701), a net-sealing rod (703), a net-sealing rope (704) and a roller (705); the net-sealing frame (701) is hinged to the upper end of the telescopic main arm (5); a plurality of groups of net-sealing rods (703) are provided in the length direction of the net-sealing frame (701); two net-sealing rods (703) in each group are respectively provided on both sides of the net-sealing frame (701); the lower end of each net-sealing rod (703) is hinged to a hinge point A (706) on the net-sealing frame (701); the upper end is connected to a winch unit (602) through the net-sealing rope (704) or is manually controlled; a plurality of rollers (705) are provided on the upper surface of the net-sealing frame (701) along the length direction; A protection rod (702) is provided below the net-sealing rod (703) on each side, the upper end of the protection rod (702) is hinged to the net-sealing rod (703) on the same side, the lower end is hinged to the net-sealing frame (701) when the net-sealing rod (703) is in an extended state, and is hinged to the hinge point A (706) when the net-sealing rod (703) is in a retracted state; The upper end of the protection rod (702) on each side is hinged to the hinge point B (707) on the upper sealing rod (703) on the same side, and the lower end is hinged to the hinge point C (708) on the sealing frame (701) on that side, and the hinge point C (708) is located below the hinge point B (707) on the same side; when the sealing rod (703) is in a retracted state, the lower end of the protection rod (702) on the lower side of the same side is removed from the hinge point C (708) and then hinged to the hinge point A (706) on the same side.

2. The automatic combined crossing system according to claim 1, characterized in that: The upper end of the net-sealing rod (703) is inclined upward relative to the lower end.

3. The automatic combined crossing system according to claim 1, characterized in that: The telescopic main arm (5) comprises a base arm section (501), a telescopic arm section (502) and a top section (503). The lower end of the base arm section (501) is hinged to the rotary platform (2) via a pin shaft in a working state after completing the erection action. The upper end of the base arm section (501) is connected to one or more telescopic arm sections (502). When there is one section, the lower end of the telescopic arm section (502) is telescopically connected to the upper end of the base arm section (501), and the upper end of the telescopic arm section (502) is telescopically connected to the top section (503). 3) and the telescopic boom section (502) are extended and retracted by the winch unit (602); when the telescopic boom section (502) is multi-section, each telescopic boom section (502) is telescopically connected to each other and is relatively extended and retracted by the drive of the winch unit (602), the bottom telescopic boom section (502) is telescopically connected to the base boom section (501), and the top telescopic boom section (502) is telescopically connected to the top section (503), and the extension and retraction of the top section (503) and each telescopic boom section (502) are driven by the winch unit (602).

4. The automatic combined crossing system according to claim 1, characterized in that: The chassis (1) is a wheeled self-propelled chassis, that is, the chassis (1) is installed on a vehicle and is transported by the vehicle.

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