CN113062460A

CN113062460A - Ultra-large span cable bearing grid system and cable net tensioning construction method

Info

Publication number: CN113062460A
Application number: CN202110348955.6A
Authority: CN
Inventors: 张海峰; 张永庆; 鲍丰
Original assignee: Triumpher Steel Structure Group Co ltd
Current assignee: Triumpher Steel Structure Group Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-07-02
Anticipated expiration: 2041-03-31
Also published as: CN113062460B

Abstract

The invention discloses a super-large-span cable-supported grid system and a cable-supported grid tensioning construction method, and the system comprises a cable net, two fixing plates and an upright post fixed at the bottoms of the fixing plates, wherein an arched support frame is fixedly connected between the opposite sides of the tops of the two fixing plates, the bottom of the arched support frame is provided with a longitudinal support plate through a locking mechanism, a balance mechanism is arranged between the opposite sides of the two fixing plates, and a positioning mechanism is arranged on the opposite side of each fixing plate. This super large span cable holds net system and cable net stretch-draw construction method, through setting up the arch support frame on the fixed plate, the bottom on arch support frame both sides is fixed through positioning mechanism and latch mechanism in the mounting groove that the base got into the fixed plate, need not carry out welding process, and easy operation shortens the time of construction cost, and the follow-up dismantlement of being convenient for, the improvement is to the utilization ratio of steel.

Description

Ultra-large span cable bearing grid system and cable net tensioning construction method

Technical Field

The invention relates to the technical field of cable-supported grids, in particular to a super-large span cable-supported grid system and a cable-supported grid tensioning construction method.

Background

At present, a stock yard is a facility widely applied in the fields of electric power, steel and the like, and mainly used for shielding a coal yard and an ore yard and reducing environmental pollution, in the aspect of a structural system, a super-large-span stock yard mainly adopts a prestressed arch truss structure, the structure is transversely provided with standard arch trusses and gable arch trusses, the standard arch trusses can be combined with prestressed cables to form the prestressed arch trusses, the gable arch trusses are supported by gable columns, longitudinal connection trusses are longitudinally arranged, a support system is formed by the longitudinal connection trusses and support members, the integrity of the structure is ensured, and the floor prestressed arch trusses support purlins, color steel plates or film structure roofs.

Referring to a large-span cable net structure supported by a self-balancing arch truss disclosed in Chinese patent application No. CN202010773686.3, the structure utilizes a small number of transversely arranged self-balancing arch trusses and longitudinally arranged longitudinal connection trusses to form a framework, and supports a cable net system therebetween to form a high-efficiency large-span structure, so that the number of steel members and installation and construction work such as on-site welding, hoisting, sliding and the like are greatly reduced. The structure is supported on concrete columns or steel columns, which can provide sufficient space for the operation of the equipment. The arched truss support slides along the transverse direction, the transverse deformation of the arched truss is restrained through the transverse steel cable at the support, the arched truss has the stress characteristic of an arch under the action of downward load, and the arched truss does not generate transverse horizontal thrust on the lower column. However, the above referenced patents suffer from the following disadvantages:

1) the cable net structure in the reference file has large span, so that the number of the stay cables and the stay rods below the self-balancing arch truss is large, the installation and the connection are complicated, time and labor are wasted, more materials are used, and the construction cost is increased.

2) The balance arched truss in the file is welded and installed with the support and the longitudinal connection truss, construction is complicated, cost time is long, follow-up detachment of the steel structure frame body is not facilitated, steel is not convenient to recycle, and material waste is caused.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a super-large span cable bearing grid system and a cable net tensioning construction method, and solves the problems that the number of inhaul cables and stay bars is large, the installation and connection are complicated, the time and labor are wasted, the number of used materials is large, the construction cost is increased, and the balance arched trusses, supports and longitudinal connection trusses are welded and installed, so that the subsequent disassembly of a steel structure frame body is not facilitated, and the reuse of steel is not convenient.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a super large span cable holds grid system, includes cable net, two fixed plates and fixes the stand in the fixed plate bottom, two fixedly connected with arched support frame between the relative one side in fixed plate top, arched support frame's bottom is provided with vertical backup pad, two through locking mechanical system be provided with balance mechanism, two between the relative one side of fixed plate one side that the fixed plate deviates from all is provided with positioning mechanism.

Positioning mechanism includes the picture peg, the equal fixedly connected with base in bottom of arched support frame both sides, the mounting groove with base looks adaptation is seted up at the top of fixed plate, one side of picture peg runs through the base and extends to the outside of fixed plate, the picture peg extends to that the outside one side of fixed plate articulates there is the board that turns over, the picture peg is kept away from one side fixedly connected with connecting plate that turns over the board, the right side of connecting plate and the left side swing joint of fixed plate, the first articulated slab of left bottom fixedly connected with of fixed plate, the left top fixedly connected with second articulated slab of fixed plate, the top of first articulated slab is provided with clamping mechanism.

Preferably, one side through connection board that the fixed plate was kept away from to first articulated slab and extend to the outside of connecting plate, one side through connection board that the fixed plate was kept away from to the second articulated slab and extend to the outside of connecting plate, first articulated slab and second articulated slab all can be buckled into 90 degrees, clamping mechanism includes the kelly, the activity groove has been seted up at the top of first articulated slab, and the bottom fixedly connected with spring of activity inslot wall, the one end that the activity inslot wall was kept away from to the spring is connected with the bottom fixed connection of kelly.

Preferably, both sides on the surface of the clamping rod are fixedly connected with check blocks, the tops of the check blocks are movably connected with the tops of the inner walls of the movable grooves, one end, far away from the spring, of the clamping rod penetrates through the first hinged plate and extends to the outside of the first hinged plate, and a clamping groove matched with the clamping rod is formed in the bottom of the second hinged plate.

Preferably, locking mechanical system includes the U type piece with vertical backup pad looks adaptation, the positive top of U type piece and the back fixed connection of arched support frame, vertical backup pad is located the inside of U type piece, the top threaded connection of U type piece has the bolt, the bottom of bolt runs through vertical backup pad and extends to the outside of U type piece, the surface threaded connection that the bolt extends to the outside one end of U type piece has the nut, the surface cover of bolt is equipped with the check washer, the check washer is located the top of nut.

Preferably, the balance mechanism comprises a supporting rod and two transverse rods fixedly connected between the opposite sides of the fixing plates, the tops of the transverse rods are fixedly connected with the bottom ends of the supporting rods, the top ends of the supporting rods are fixedly connected with the bottom of the longitudinal supporting plate, and hinged supports are fixedly connected to the tops of the two sides of the supporting rods.

Preferably, the bottom fixedly connected with cable of hinged-support, the equal fixedly connected with fixing support in both sides at horizontal pole top, the bottom of cable runs through to fixing support's outside, the cable runs through to fixing support outside one end fixedly connected with cable anchor head.

Preferably, the cable net comprises two arch supports and a longitudinal support fixed between the two arch supports, a wind resisting cable is fixedly connected between opposite sides of the two arch supports, a bearing cable is fixedly connected with one side of the longitudinal support, and the wind resisting cable and the bearing cable are interwoven into a net shape.

Preferably, the back of the upright post is fixedly connected with an inclined support rod, the arched support frame comprises a frame, a first support rod is fixedly connected between the front and the back of the inner wall of the frame, a second support rod is fixedly connected between the front and the back of the inner wall of the frame, and the second support rod is positioned on the right side of the first support rod.

The invention also discloses a cable net tensioning construction method of the ultra-large span cable bearing grid system, which specifically comprises the following steps:

s1, firstly, sequentially placing the longitudinal support plates in the U-shaped blocks on the arched support frames for positioning, then locking the longitudinal support plates in the U-shaped blocks through bolts, fixing the bolts through nuts, namely fixing the longitudinal support plates below the arched support frames, then assembling the arched support frames and the fixing plates through external hoisting traction equipment, and enabling bases below the arched support frames to enter the installation grooves;

s2, after the turning plates are kept in a parallel state, the inserting plates penetrate through the base and the fixing plate, then the turning plates are bent to 90 degrees, the inserting plates are clamped, meanwhile, the first hinged plate and the second hinged plate on the fixing plate penetrate through the connecting plate, after the first hinged plate and the second hinged plate penetrate through the connecting plate, the first hinged plate and the second hinged plate are bent in opposite directions through the hinged pieces, the front ends of the first hinged plate and the second hinged plate are vertical, the connecting plate is fixed on one side of the fixing plate, then the clamping rod in the first hinged plate enters the clamping groove of the second hinged plate under the action of the elastic force of the spring, the first hinged plate and the second hinged plate are clamped, the base is fixed in the mounting groove, and the assembly among the arched support frame, the fixing plate and the upright post is;

s3, fixing the stay bar with the longitudinal support plate through screws, fixing two zippers on the hinged support, enabling the bottom ends of the zippers to penetrate through the fixed support, connecting an external electric hoist with the zippers, tensioning the zippers, locking the zippers on the fixed support through cable anchor heads, and forming a self-balancing stress structure together with the stay bar;

s4, fixing the wind resisting cables between the arch supports, fixing the bearing cables on the longitudinal supports, interweaving the bearing cables and the wind resisting cables into a net shape, fixing the joints through cable clamps, covering the cable net on the arch support through external hoisting traction equipment after the cable net is assembled, and fixing the cable net on the arch support through screws to complete the fixation of the cable net.

Preferably, when the arched supporting frame is assembled with the fixing plate in step S1, the fixing plate is supported by a plurality of pillars below, and the pillars are stably supported by diagonal braces.

(III) advantageous effects

The invention provides a super-large span cable bearing grid system and a cable net tensioning construction method. Compared with the prior art, the method has the following beneficial effects:

(1) the ultra-large span cable bearing grid system and the cable net tensioning construction method are characterized in that the positioning mechanism comprises an inserting plate, the bottoms of two sides of the arched support frame are fixedly connected with a base, the top of a fixed plate is provided with a mounting groove matched with the base, one side of the inserting plate penetrates through the base and extends to the outside of the fixed plate, one side of the inserting plate extending to the outside of the fixed plate is hinged with a turning plate, one side of the inserting plate far away from the turning plate is fixedly connected with a connecting plate, the right side of the connecting plate is movably connected with the left side of the fixed plate, the bottom of the left side of the fixed plate is fixedly connected with a first hinging plate, the top of the left side of the fixed plate is fixedly connected with a second hinging plate, the top of the first hinging plate is provided with a clamping mechanism, the method has the advantages of no need of welding treatment, simple operation, shortened construction cost time, convenience for subsequent disassembly and improved utilization rate of steel.

(2) The ultra-large span cable-supported grid system and the cable net tensioning construction method comprise a U-shaped block matched with a longitudinal supporting plate through a locking mechanism, the top of the front side of the U-shaped block is fixedly connected with the back side of an arched supporting frame, the longitudinal supporting plate is positioned in the U-shaped block, the top of the U-shaped block is in threaded connection with a bolt, the bottom end of the bolt penetrates through the longitudinal supporting plate and extends to the outside of the U-shaped block, the surface of one end of the bolt, which extends to the outside of the U-shaped block, is in threaded connection with a nut, the surface of the bolt is sleeved with a check washer, the check, through placing the longitudinal support board in the U type piece on the arched support frame, rethread bolt and nut are fixed the longitudinal support board in the U type piece, conveniently install and dismantle longitudinal support board and arched support frame, do benefit to follow-up dismantlement to this steel construction support body, can carry out reuse to steel.

(3) The ultra-large span cable-supported grid system and the cable-network tensioning construction method are characterized in that a cross bar is fixedly connected between one opposite sides of two fixing plates, the top of the cross rod is fixedly connected with the bottom end of the stay rod, the top end of the stay rod is fixedly connected with the bottom of the longitudinal support plate, the tops of the two sides of the stay rod are fixedly connected with hinged supports, the bottom of the hinged support is fixedly connected with a guy cable, the two sides of the top of the cross rod are fixedly connected with fixed supports, the bottom end of the guy cable penetrates through the outside of the fixed supports, one end of the guy cable penetrating through the outside of the fixed supports is fixedly connected with a cable anchor head, the arch-shaped support frame is supported through the cross rods and the support rods, the pull cables are arranged on two sides of the arch-shaped support frame, a self-balancing stress structure is formed, the strength of a grid steel structure is increased, the stability and the safety of the structure are improved, the using quantity of the balance mechanisms is small, materials are saved, and the construction cost is reduced.

Drawings

FIG. 1 is a perspective view of the structure of the present invention;

FIG. 2 is a perspective view of the arched support frame structure of the present invention;

FIG. 3 is a front view of the structure of the present invention;

FIG. 4 is a perspective view of the cable and fixed support structure of the present invention;

FIG. 5 is a top view of the arched support and the longitudinal support plate structure of the present invention;

FIG. 6 is a cross-sectional view of a U-shaped block configuration of the present invention;

FIG. 7 is a cross-sectional view of a mounting plate structure of the present invention;

FIG. 8 is an enlarged view of a portion of the invention at A in FIG. 7;

FIG. 9 is a cross-sectional view of a first card construction of the invention;

fig. 10 is a partial schematic view of a cable net structure of the present invention.

In the figure, 1 cable net, 11 arch-shaped brackets, 12 longitudinal brackets, 13 wind resisting cables, 14 bearing cables, 2 fixing plates, 3 upright posts, 4 arch-shaped supporting frames, 41 frames, 42 first supporting rods, 43 second supporting rods, 5 locking mechanisms, 51U-shaped blocks, 52 bolts, 53 nuts, 54 anti-loosening gaskets, 6 longitudinal supporting plates, 7 balance mechanisms, 71 supporting rods, 72 cross rods, 73 hinged supports, 74 pulling cables, 75 fixed supports, 76 cable anchor heads, 8 positioning mechanisms, 81 inserting plates, 82 bases, 83 installing grooves, 84 turning plates, 85 connecting plates, 86 first hinging plates, 87 second hinging plates, 88 clamping mechanisms, 881 clamping rods, 882 movable grooves, 883 springs, 884 stoppers, 885 clamping grooves and 9 inclined supporting rods.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 10, an embodiment of the present invention provides a technical solution: the utility model provides a super large span cable holds grid system, including cable net 1, two fixed plates 2 and fix the stand 3 in fixed plate 2 bottom, fixedly connected with arched support frame 4 between 2 relative one sides in top of two fixed plates, arched support frame 4 is provided with a plurality ofly, arched support frame 4's bottom is provided with vertical backup pad 6 through locking mechanical system 5, vertical backup pad 6 is provided with three, evenly arrange in arched support frame 4 below, be provided with balance mechanism 7 between 2 relative one sides of two fixed plates, one side that 2 mutually deviate from of two fixed plates all is provided with positioning mechanism 8.

In the embodiment of the invention, the positioning mechanism 8 comprises an inserting plate 81, the bottoms of the two sides of the arched support frame 4 are fixedly connected with a base 82, the top of the fixing plate 2 is provided with a mounting groove 83 matched with the base 82, one side of the inserting plate 81 penetrates through the base 82 and extends to the outside of the fixing plate 2, one side of the inserting plate 81 extending to the outside of the fixing plate 2 is hinged with a turning plate 84, one side of the inserting plate 81 far away from the turning plate 84 is fixedly connected with a connecting plate 85, the right side of the connecting plate 85 is movably connected with the left side of the fixing plate 2, the bottom of the left side of the fixing plate 2 is fixedly connected with a first hinging plate 86, the top of the.

In the embodiment of the invention, one side of the first hinge plate 86, which is far away from the fixed plate 2, penetrates through the connecting plate 85 and extends to the outside of the connecting plate 85, one side of the second hinge plate 87, which is far away from the fixed plate 2, penetrates through the connecting plate 85 and extends to the outside of the connecting plate 85, both the first hinge plate 86 and the second hinge plate 87 can be bent to 90 degrees, so that the connecting plate 85 is conveniently fixed, the clamping mechanism 88 comprises a clamping rod 881, the top of the first hinge plate 86 is provided with a movable groove 882, the bottom of the inner wall of the movable groove 882 is fixedly connected with a spring 883, the spring 883 can be replaced to ensure elasticity, and one end of the spring 883, which is far away from.

In the embodiment of the invention, the two sides of the surface of the fastening rod 881 are fixedly connected with the stoppers 884, the stoppers 884 limit the fastening rod 881, the top of the stoppers 884 are movably connected with the top of the inner wall of the movable groove 882, one end of the fastening rod 881, which is far away from the spring 883, penetrates through the first hinge plate 86 and extends to the outside of the first hinge plate 86, and the bottom of the second hinge plate 87 is provided with the fastening groove 885 matched with the fastening rod 881.

In the embodiment of the present invention, the locking mechanism 5 includes a U-shaped block 51 adapted to the longitudinal support plate 6, the top of the front surface of the U-shaped block 51 is fixedly connected to the back surface of the arched support frame 4, the longitudinal support plate 6 is located inside the U-shaped block 51, the top of the U-shaped block 51 is in threaded connection with a bolt 52, the bottom end of the bolt 52 penetrates through the longitudinal support plate 6 and extends to the outside of the U-shaped block 51, the surface of the end of the bolt 52 extending to the outside of the U-shaped block 51 is in threaded connection with a nut 53, the surface of the bolt 52 is sleeved with a locking washer 54, the locking washer 54 can prevent the nut 53 from loosening, so as to increase the locking force.

In the embodiment of the present invention, the balancing mechanism 7 includes a supporting rod 71, a cross rod 72 is fixedly connected between opposite sides of the two fixing plates 2, the top of the cross rod 72 is fixedly connected with the bottom end of the supporting rod 71, the top end of the supporting rod 71 is fixedly connected with the bottom of the longitudinal supporting plate 6, and the tops of both sides of the supporting rod 71 are fixedly connected with a hinged support 73.

In the embodiment of the invention, the bottom of the hinged support 73 is fixedly connected with a guy cable 74, the guy cable 74 is pulled by an external hoist, two sides of the top of the cross bar 72 are fixedly connected with fixed supports 75, the bottom end of the guy cable 74 penetrates through the outside of the fixed supports 75, one end of the guy cable 74 penetrating through the outside of the fixed supports 75 is fixedly connected with a cable anchor head 76, and the cable anchor head 76 is a product in the prior art and is used for straightening and locking the guy cable 74.

In the embodiment of the invention, the cable net 1 comprises two arch supports 11 and a longitudinal support 12 fixed between the two arch supports 11, a wind resisting cable 13 is fixedly connected between opposite sides of the two arch supports 11, a bearing cable 14 is fixedly connected with one side of the longitudinal support 12, and the wind resisting cable 13 and the bearing cable 14 are interwoven into a net shape.

In the embodiment of the present invention, the back surface of the upright 3 is fixedly connected with the inclined strut 9, the inclined strut 9 plays a role in supporting and stabilizing the upright 3, the arched support frame 4 includes a frame 41, a first support rod 42 is fixedly connected between the front surface and the back surface of the inner wall of the frame 41, a second support rod 43 is fixedly connected between the front surface and the back surface of the inner wall of the frame 41, and the first support rod 42 and the second support rod 43 are arranged, so that the arched support frame 4 is more stable and has good supporting performance, and the second support rod 43 is located on the right side of the first support rod 42.

s1, firstly, sequentially placing the longitudinal support plates 6 in the U-shaped blocks 51 on the arched support frames 4 for positioning, then locking the longitudinal support plates 6 in the U-shaped blocks 51 through bolts 52, fixing the bolts 52 through nuts 53, namely fixing the longitudinal support plates 6 below the arched support frames 4, then assembling the arched support frames 4 and the fixing plate 2 through external hoisting traction equipment, and enabling the bases 82 below the arched support frames 4 to enter the installation grooves 83;

s2, keeping the turning plate 84 in parallel, the inserting plate 81 passes through the base 82 and the fixing plate 2, then the turning plate 84 is bent to 90 degrees to block the inserting plate 81, and the first hinge plate 86 and the second hinge plate 87 on the fixing plate 2 penetrate through the connecting plate 85, after the first hinge plate 86 and the second hinge plate 87 penetrate through, the first hinge plate 86 and the second hinge plate 87 are bent in opposite directions by the hinge, so that the front ends of the first hinge plate 86 and the second hinge plate 87 are erected, the connecting plate 85 is fixed against the side of the fixed plate 2, the catch 881 in the first hinge plate 86 is then forced by the spring 883 into the catch 885 of the second hinge plate 87, thereby snapping the first hinge plate 86 and the second hinge plate 87 together, thereby fixing the base 82 in the mounting groove 83 and completing the assembly between the arched support frame 4 and the fixed plate 2 and the upright post 3;

s3, fixing the stay bar 71 and the longitudinal support plate 6 through screws, fixing two stay cables 74 on a hinged support 73, enabling the bottom ends of the stay cables 74 to penetrate through a fixed support 75, connecting an external electric hoist with the stay cables 74, drawing the stay cables 74, tensioning the stay cables 74, locking the stay cables 74 on the fixed support 75 through cable anchor heads 76, and forming a self-balancing stress structure together with the stay bar 71;

s4, fixing the wind resisting cables 13 between the arch supports 11, fixing the bearing cables 14 on the longitudinal supports 12, interweaving the bearing cables 14 and the wind resisting cables 13 into a net shape, fixing the joints through cable clamps, covering the cable net 1 on the arch support frame 4 through external hoisting traction equipment after the cable net 1 is assembled, and then fixing the cable net 1 on the arch support frame 4 through screws to finish the fixation of the cable net 1.

In the embodiment of the present invention, when the arch support frame 4 is assembled with the fixing plate 2 in step S1, the fixing plate 2 is supported by the plurality of lower vertical posts 3, and the vertical posts 3 are stably supported by the diagonal brace 9, and the content not described in detail in this specification belongs to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment may be used.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a super large span cable holds grid system, includes cable net (1), two fixed plates (2) and fixes stand (3) in fixed plate (2) bottom, its characterized in that: an arched support frame (4) is fixedly connected between the opposite sides of the tops of the two fixing plates (2), a longitudinal support plate (6) is arranged at the bottom of the arched support frame (4) through a locking mechanism (5), a balance mechanism (7) is arranged between the opposite sides of the two fixing plates (2), and positioning mechanisms (8) are arranged on the opposite sides of the two fixing plates (2);

the positioning mechanism (8) comprises an inserting plate (81), the bottoms of the two sides of the arched supporting frame (4) are fixedly connected with a base (82), the top of the fixed plate (2) is provided with an installation groove (83) matched with the base (82), one side of the insert plate (81) penetrates through the base (82) and extends to the outside of the fixed plate (2), one side of the inserting plate (81) extending to the outside of the fixing plate (2) is hinged with a turning plate (84), one side of the inserting plate (81) far away from the turning plate (84) is fixedly connected with a connecting plate (85), the right side of the connecting plate (85) is movably connected with the left side of the fixed plate (2), the bottom of the left side of the fixed plate (2) is fixedly connected with a first hinged plate (86), the top of the left side of the fixed plate (2) is fixedly connected with a second hinged plate (87), and a clamping mechanism (88) is arranged at the top of the first hinge plate (86).

2. The system of claim 1, wherein: one side that fixed plate (2) was kept away from in first articulated plate (86) runs through connecting plate (85) and extends to the outside of connecting plate (85), one side that fixed plate (2) was kept away from in second articulated plate (87) runs through connecting plate (85) and extends to the outside of connecting plate (85), first articulated plate (86) and second articulated plate (87) all can be buckled into 90 degrees, clamping mechanism (88) are including card pole (881), movable groove (882) have been seted up at the top of first articulated plate (86), and the bottom fixedly connected with spring (883) of activity groove (882) inner wall, the one end that movable groove (882) inner wall was kept away from in spring (883) is connected with the bottom fixed of card pole (881).

3. The system of claim 2, wherein: the equal fixedly connected with dog (884) in both sides on kelly (881) surface, and the top swing joint of the top of dog (884) and activity groove (882) inner wall, the outside that first articulated slab (86) and extended to first articulated slab (86) is run through to the one end that spring (883) are kept away from to kelly (881), draw-in groove (885) with kelly (881) looks adaptation are seted up to the bottom of second articulated slab (87).

4. The system of claim 1, wherein: locking mechanical system (5) include U type piece (51) with vertical backup pad (6) looks adaptation, the back fixed connection of the positive top of U type piece (51) and arch support frame (4), vertical backup pad (6) are located the inside of U type piece (51), the top threaded connection of U type piece (51) has bolt (52), the bottom of bolt (52) is run through vertical backup pad (6) and is extended to the outside of U type piece (51), surface threaded connection that bolt (52) extend to U type piece (51) outside one end has nut (53), the surface cover of bolt (52) is equipped with locking gasket (54), locking gasket (54) are located the top of nut (53).

5. The system of claim 1, wherein: balance mechanism (7) are including vaulting pole (71), two fixedly connected with horizontal pole (72) between the relative one side of fixed plate (2), and the bottom fixed connection of the top of horizontal pole (72) and vaulting pole (71), the top of vaulting pole (71) and the bottom fixed connection of vertical backup pad (6), the equal fixedly connected with hinged-support (73) in top of vaulting pole (71) both sides.

6. The system of claim 5, wherein: the bottom fixedly connected with cable (74) of hinged-support (73), the equal fixedly connected with fixing support (75) in both sides at horizontal pole (72) top, the outside to fixing support (75) is run through to the bottom of cable (74), cable (74) run through to the outside one end fixedly connected with cable anchor head (76) of fixing support (75).

7. The system of claim 1, wherein: the cable net (1) comprises two arch supports (11) and a longitudinal support (12) fixed between the two arch supports (11), a wind resisting cable (13) is fixedly connected between opposite sides of the two arch supports (11), a bearing cable (14) is fixedly connected to one side of the longitudinal support (12), and the wind resisting cable (13) and the bearing cable (14) are interwoven into a net shape.

8. The system of claim 1, wherein: the back fixedly connected with diagonal brace (9) of stand (3), arch support frame (4) include frame (41), fixedly connected with first bracing piece (42) between the front and the back of frame (41) inner wall, fixedly connected with second bracing piece (43) between the front and the back of frame (41) inner wall, and second bracing piece (43) are located the right side of first bracing piece (42).

9. A cable net tensioning construction method of a super large span cable bearing grid system according to any one of claims 1 to 8, characterized in that: the method specifically comprises the following steps:

s1, firstly, sequentially placing longitudinal support plates (6) in U-shaped blocks (51) on an arched support frame (4) for positioning, then locking the longitudinal support plates (6) in the U-shaped blocks (51) through bolts (52), fixing the bolts (52) through nuts (53), namely fixing the longitudinal support plates (6) below the arched support frame (4), then assembling the arched support frame (4) and a fixing plate (2) through external hoisting traction equipment, and enabling bases (82) below the arched support frame (4) to enter installation grooves (83);

s2, after the turning plate (84) is kept in a parallel state, the inserting plate (81) penetrates through the base (82) and the fixing plate (2), then the turning plate (84) is bent to 90 degrees to clamp the inserting plate (81), meanwhile, the first hinge plate (86) and the second hinge plate (87) on the fixing plate (2) penetrate through the connecting plate (85), after the first hinge plate (86) and the second hinge plate (87) penetrate through, the first hinge plate (86) and the second hinge plate (87) are bent in opposite directions through the hinge, so that the front ends of the first hinge plate (86) and the second hinge plate (87) are vertical, the connecting plate (85) is fixed on one side of the fixing plate (2), then the clamping rod (881) in the first hinge plate (86) enters the clamping groove (885) of the second hinge plate (87) under the elastic force of the spring (883), and clamping is carried out between the first hinge plate (86) and the second hinge plate (87), thereby fixing the base (82) in the mounting groove (83) and completing the assembly among the arch support frame (4), the fixed plate (2) and the upright post (3);

s3, fixing the stay bar (71) with the longitudinal support plate (6) through a screw, fixing two stay cables (74) on a hinged support (73), enabling the bottom ends of the stay cables (74) to penetrate through a fixed support (75), connecting an external electric hoist with the stay cables (74), tensioning the stay cables (74), locking the stay cables (74) on the fixed support (75) through cable anchor heads (76), and forming a self-balancing stress structure together with the stay bar (71);

s4, fixing the wind resisting cables (13) among the arch-shaped supports (11), fixing the bearing cables (14) on the longitudinal supports (12), interweaving the bearing cables (14) and the wind resisting cables (13) into a net shape, fixing the joints through cable clamps, covering the cable net (1) on the arch-shaped support frames (4) through external hoisting traction equipment after the cable net (1) is assembled, and fixing the cable net (1) on the arch-shaped support frames (4) through screws to finish the fixation of the cable net (1).

10. The cable net tensioning construction method of the ultra-large span cable bearing grid system according to claim 9, characterized in that: when the arch-shaped support frame (4) is assembled with the fixing plate (2) in the step S1, the fixing plate (2) is supported by the plurality of upright posts (3) below, and meanwhile, the upright posts (3) are stably supported by the inclined support rods (9).