CN211006345U - Lattice formula cat ladder - Google Patents

Abstract

The utility model discloses a lattice type crawling ladder, by the couple truss, protect the cage cat ladder, the scaffold board, the flange node, the safety net, the extension protects the cage cat ladder, parts such as end shield and interim rest platform constitute, the couple truss welds in climbing cage one end, the couple truss can hook bridge railing or the edge that the bridge floor is higher, protect the cage cat ladder and vertically hang in bridge one side, provide upper and lower vertical passageway, lay the scaffold board along the plane that the horizontal chord member is located in the couple truss, as horizontal passageway, and with vertical passageway direct connection, constructor can follow the bridge floor along the horizontal passageway in the couple truss to protect the cage cat ladder, rethread cage cat ladder goes to under the bridge, reach underbridge work platform (hanging flower basket etc.) at last, vice versa; the cage ladder can also be lengthened to the ground under the bridge or the working platform on the water through the flange joint at the lower end, so that the passing of the working platform (hanging basket and the like) on the bridge, under the bridge and on the ground (or the working platform on the water surface) is realized.

Description

Lattice formula cat ladder

Technical Field

The utility model belongs to bridge building field specifically indicates a lattice formula cat ladder.

Background

With the development of highway traffic, the number of bridge buildings is continuously increased, and the number of highway bridges is rapidly increased, so that good transportation conditions are created for economic development; on the other hand, as time goes on, the bridge is influenced by the natural environment and the service environment in the service process, the problem of bridge maintenance and repair is already put in front of people, the traffic accident caused by bridge hidden danger is a serious accident of vehicle damage and human death, and the bridge maintenance, reinforcement and reconstruction work is indispensable. When the problem below the main beam structure of the bridge is solved, a high-altitude hanging basket or a temporary scaffold support is often adopted as a construction platform.

When constructors carry out temporary high-altitude operation on the platform, the operation is extremely inconvenient. Personnel pass between the bridge floor and the platform, generally go up and down through ropes or simple ladders, or ride a bridge maintenance vehicle; the former is extremely unsafe, the latter is troublesome, affects traffic, and has low efficiency, high cost and limited traffic distance. A tool type temporary channel which is safe, reliable, efficient and economical is urgently needed in engineering.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a lattice type ladder stand.

In order to achieve the purpose, the utility model adopts the following technical scheme that the lattice type crawling ladder comprises a hook truss and a cage-protecting crawling ladder, wherein the whole hook truss is a double-frame inverted L-shaped space truss structure, the cage-protecting crawling ladder is a cuboid formed by four long rods, the four long rods are fixed perpendicular to the ground, the two long rods of each perpendicular surface are connected with a plurality of horizontal rods, the number of the horizontal rods on the perpendicular surface for connecting the hook truss is larger than that of the horizontal rods installed on other surfaces, the surface is a crawling surface, the installed horizontal rods serve as crawling rods, the end part of the horizontal section of the hook truss is welded with one end of the cage-protecting crawling ladder, one end of the cage-protecting crawling ladder for connecting the hook truss is defined as the upper end, the other end of the cage-protecting ladder is defined as the lower end, the vertical side of the crawling rod of the cage-protecting crawling ladder is provided with a crawling structure, the surface where the crawling ladder structure is defined as.

Further, the lower extreme of four stock of protecting the cage cat ladder stretches out, tip mounting flange node, it is fixed that the cage cat ladder passes through the flange node to protect, the flange node includes ring flange, stiffening rib board, cat ladder montant, protects the vertical chord member welding of the frame check of the lower extreme of cage cat ladder the one end of cat ladder montant other end welds between two parties perpendicularly the ring flange is established in the periphery that is close to the junction of cat ladder montant and ring flange stiffening rib board, flange dish are opened along the circumference has a plurality of screw hole, and the ring flange of different flange nodes passes through bolted connection, the bolt is installed in the screw hole.

Furthermore, steel piles are arranged on the ground where the cage protection crawling ladder is installed, and the lower end of the cage protection crawling ladder is tied, tied and fixed with the steel piles through flange nodes.

Further, still include that a plurality of extension protects the cage cat ladder, the extension protects the cage cat ladder and comprises a cuboid by four stock, and four stock perpendicular to ground are fixed, and a plurality of horizon bars are connected to the two stock of every perpendicular, and four stock both ends are stretched out, the equal mounting flange node of tip, protect cage cat ladder lower extreme and pass through flange node connection extension and protect the cage cat ladder, and another extension that the other end that the extension protected the cage cat ladder passes through flange node connection protects cage cat ladder or ground, and the stake is established to the ground of installation extension protection cage cat ladder, and the extension protects the cage cat ladder and passes through flange node (or the lower extreme of four stock, or the lower extreme horizontal pole, or the node of stock, horizontal pole) and tie up fixedly with the stake, the extension protects the cage cat ladder and is located the vertical flank of the face.

Furthermore, the hook truss, the protective cage crawling ladder and the expansion protective cage crawling ladder are all formed by welding high-strength small-section circular steel pipes, and the cross section size of the protective cage crawling ladder and the cross section size of the expansion protective cage crawling ladder are not less than 60cm x 60 cm.

Furthermore, each truss unit of the hook truss is provided with an inclined web member, and a scaffold board is laid along the horizontal chord member in the horizontal section of the hook truss.

Furthermore, the frame lattices at the two ends of the protective cage crawling ladder and the frame lattices at the two ends of the extended protective cage crawling ladder are welded with oblique web members on a non-crawling surface, and the crawling rods on the crawling surface are more than the horizontal rods on other vertical side surfaces.

Furthermore, a plurality of horizontal rods of the cage protection ladder stand and the expansion cage protection ladder stand are provided with temporary rest platforms, the temporary rest platforms are arranged on the horizontal rods of the non-crawling surface and rotate around the horizontal rods, and the rotation angle is 90 degrees from the non-crawling surface on which the temporary rest platforms are installed to the horizontal plane.

Furthermore, safety nets are laid on the inner sides of the non-creeping surfaces of the cage crawling ladder and the extended cage crawling ladder.

Has the advantages that: compared with the prior art, the utility model has the advantages of it is following:

1) the utility model provides a lattice ladder stand which is characterized in that a safe passage between a bridge floor, an underbridge working platform (hanging basket, etc.) and the ground (or an overwater working platform) can be provided for maintainers;

2) the utility model adopts the steel truss structure, has simple and reasonable structure form and definite stress, is mainly formed by welding high-strength small-section steel pipes, has the characteristics of light weight and high strength, can be carried manually while having enough strength, can also be carried by a simple carrying tool, and is flexibly moved and arranged along the bridge direction so as to adapt to the position change of the working platform under the bridge;

3) the utility model has simple working mode, is suitable for different bridges, has expandable ladder stand length, meets the requirements of different working conditions, has wide application range, can be repeatedly used, saves labor and has good economical efficiency;

4) the utility model provides an omnidirectional safeguard measure can guarantee that constructor safety is current.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the main structure of the present invention;

FIG. 3 is a schematic plan view of the main structure of the present invention;

FIG. 4 is a schematic structural view of the middle-extended cage ladder of the present invention;

fig. 5 is a schematic view of a flange joint in the present invention;

FIG. 6 is a schematic view of the present invention in use on a high guardrail bridge;

FIG. 7 is a schematic view of the present invention in use on a short guardrail bridge;

FIG. 8 is a schematic view of the utility model used for the passage between the bridge deck and the ground;

wherein, 1, a hook truss is hooked; 2. a protective cage crawling ladder; 3. a scaffold board; 4. a flange joint; 4-1, a flange plate; 4-2, stiffening rib plates; 4-3, bolts; 4-4, climbing a ladder vertical rod; 5. a safety net; 6. expanding the protective cage ladder stand; 7. an end baffle; 8. a temporary rest platform; 9. a bridge; 10. a guardrail; 11. a hanging basket; 12. backing plate, 13, steel pile.

Detailed Description

The present invention will be further clarified by the following description with reference to the attached drawings and specific examples, which should be understood as being merely illustrative of the present invention and not limiting the scope of the present invention, and modifications of various equivalent forms of the present invention by those skilled in the art after reading the present invention, all fall within the scope defined by the appended claims of the present application.

As shown in figure 1, the lattice type ladder stand comprises a hook truss 1, a cage ladder stand 2, scaffold boards 3, flange nodes 4, a safety net 5, an expansion cage ladder stand 6, end baffles 7, a temporary rest platform 8 and the like.

Referring to fig. 1, 2 and 3, each of a hook truss 1 and a cage ladder 2 comprises a plurality of framework lattices of a hexahedral square framework structure which are connected in series, the hook truss 1 is integrally of a double-frame inverted L-shaped space truss structure, the cage ladder 2 is integrally of a double-frame linear space truss structure, a shared rod is welded at the end of the horizontal section of the hook truss 1 and one end of the cage ladder 2, which is connected with the hook truss 1, is defined as an upper end, the other end of the cage ladder 2 is defined as a lower end, the cage ladder 2 is installed perpendicular to the ground, a vertical side of the framework lattice of the cage ladder 2 is provided with a structure (which also serves as safety maintenance, the distance between the cross rods is small, no safety net is additionally arranged), the surface where the ladder structure is located is defined as a creeping surface, the other three vertical side surfaces of the cage ladder 2 are non-creeping surfaces, (any one of the three non-creeping surfaces, any one of the three non-creeping surfaces can be used as a scaffold, and can be used as a safety net for construction personnel to enter and.

The hook truss 1, the cage crawling ladder 2 and the extended cage crawling ladder 6 are all formed by welding high-strength small-section round steel pipes, anticorrosive paint is coated on the outer surface of the hook truss, the cage crawling ladder has the characteristics of light weight, high strength and corrosion resistance, and the strength and the stability of the hook truss meet the requirements of steel structure specifications; each single truss of the hook truss 1 is provided with an oblique web member, so that the plane of the truss has enough rigidity; an oblique rod is arranged between two trusses of the hook truss 1 at a position which does not influence the passing of personnel, so that the overall stability of the trusses is improved, and the requirement of the passing space of the personnel is met. And scaffold boards 3 are laid along the horizontal chord members in the long side sections of the hook trusses 1 to serve as transverse pedestrian passages. The long-side section truss of the hook truss 1 has enough height and space so as to facilitate the passing of constructors; set up horizontal pole between 1 horizontal segment outside montant of couple truss, convenience of customers creeps to scaffold board 3 from the bridge floor.

As shown in figure 2, the distance between the cross rods on the crawling ladder side of the cage protection crawling ladder 2 is within a reasonable range, the crawling requirement of constructors with normal heights is met, the distance between the cross rods on the other three sides is met, the requirement for drilling out a construction platform by the constructors is met, normal construction is carried out, except for the holes through which the constructors enter and exit the construction platform and the ground, safety nets are fully covered at other positions, the constructors are prevented from turning over, falling off accidentally such as pitching and the like, the cross section size of the cage protection crawling ladder 2 and the cross section size of the cage protection crawling ladder are not smaller than 60cm × 60cm, the passing requirement of the constructors with normal sizes is met, and diagonal web members are arranged in.

Extension protects cage 2 accessible and connects extension and protect cage cat ladder increase length, satisfies the demand of great high bridge 9. As shown in fig. 4, the cross section of the extended cage ladder 6 is consistent with that of the cage ladder 2 and the requirements of the horizontal cross bars. The height of the extension cage ladder 6 can be set into standard knots with different heights, and the height requirements of different working conditions are met. And flange nodes 4-5 are arranged at two ends of a vertical rod of the expanding protective cage crawling ladder 6 so as to meet the requirement of bidirectional expansion.

As shown in figure 1, the vertical chord of the frame lattice at the lower end of the protective cage ladder stand 2 extends out, a flange node 4 is arranged at the end part, the protective cage ladder stand 2 is fixed through the flange node 4, the flange node 4 comprises a flange plate 4-1, a stiffening rib plate 4-2 and a ladder stand vertical rod 4-4, the vertical chord of the frame lattice at the lower end of the protective cage ladder stand 2 is welded at one end of the ladder stand vertical rod 4-4, the flange plate 4-1 is welded at the other end of the ladder stand vertical rod 4-4 vertically and centrally, the periphery close to the connection part of the vertical rod 4-4 of the ladder and the flange plate 4-1 is reinforced by a stiffening ribbed slab 4-2, the flange plate 4-1 is provided with a plurality of threaded holes along the circumference, the flange plates of different flange nodes 4 are connected through bolts 4-3, and the specifications and sizes of all parts of the flange nodes 4 all meet the strength requirement.

When directly letting cage cat ladder 2 be connected with ground, steel pile 13 is established on the ground of installation cage cat ladder 2, and the lower extreme of cage cat ladder 2 passes through the lower extreme of flange node 4 or four stock, or the lower extreme horizontal pole, or the node of stock, horizontal pole and steel pile 13 tie up to bundle fixedly.

As shown in figure 1, this lattice type cat ladder includes that a plurality of extension protects cage cat ladder 6, the extension protects the frame check that the cage cat ladder includes the hexahedral square frame structure that a plurality of concatenated, wholly be two-pin linear type truss structure, the vertical chord of its both ends non-frame check stretches out, the equal mounting flange node 4 of tip, protect cage cat ladder 6 is protected in 2 lower extremes of cage cat ladder to connect the extension through flange node 4, the extension protects cage cat ladder 6's the other end to connect another extension through flange node 4 or ground, the stake 13 is established to the ground that cage cat ladder 6 was protected in the installation extension, the extension protects cage cat ladder 6 to tie up through flange node 4 or to tie up with stake 13 and tie up fixedly, the cat ladder structure is established to the vertical flank that extension protects cage cat ladder 6 to be located the crawling face of cage cat ladder 2.

As shown in figure 1, a safety net 5 is laid along the inner side of the non-creeping surface on the protective cage crawling ladder 2 and the extended protective cage crawling ladder 6, and the protective cage crawling ladder 2 or the extended protective cage crawling ladder 6 is fixedly connected with the ground through a bottom end buckling end baffle 7, so that the pedestrian safety is improved.

As shown in fig. 1 and 4, a temporary rest platform 8 can be arranged in the cage-protecting ladder 2 and the expanded cage-protecting ladder 6, the temporary rest platform 8 is arranged on a horizontal chord of a non-creeping surface and rotates around the horizontal chord, and the rotation angle is 90 degrees from the non-creeping surface on which the temporary rest platform is arranged to a horizontal plane. When not in use, the guardrail is folded along the side vertical surface of the guardrail, so that the passing of personnel is not influenced; when the temporary rest platform is used, the temporary rest platform can be rotated and put down and transversely erected on the cross rods on the two sides to form a horizontal bearing surface for personnel to have a temporary rest platform. In the long-distance traffic condition of fig. 8, the devices may be equally spaced at appropriate locations.

As shown in fig. 6 and 7, the present embodiment can be applied to a high guardrail bridge 9 and a low guardrail bridge 9, and has two application methods. As shown in fig. 6, for a high guardrail bridge 9, vertical counter force is provided by the guardrail to balance dead weight; when the guardrail is not enough to provide vertical counter force, the problem can be solved by arranging a lattice type fulcrum below the hook and the like. As shown in fig. 7, for a short guardrail bridge 9, the vertical counter force is provided by the main beam to balance the dead weight. The utility model discloses the effort is through couple truss 1 direct action on bridge 9 or railing, and lattice formula cat ladder can produce slightly to twist reverse, can set up soft cushion in the suitable position between cat ladder and bridge 9, avoids protecting cage cat ladder 2 and bridge 9 local contact production stress concentration phenomenon and direct contact wearing and tearing.

As shown in figure 8, the utility model discloses the accessible concatenates a plurality of extension cage cat ladder 6, realizes the direct current between bridge floor-ground.

The utility model discloses when using as figure 6, 7, protect 6 bottom accessible fasteners of cage cat ladder and hanging flower basket 11 drawknot, when using as figure 8, can bury the piling bar 13 underground and protect 6 bottom ligature drawknots of cage cat ladder in ground to keep hanging flower basket 11's stability, constructor can follow the bridge floor and go to protecting cage cat ladder 2 along the horizontal passageway in couple truss 1, and the rethread protects the cage cat ladder and goes to under the bridge, reachs underbridge work platform (hanging flower basket 11 etc.) at last, and vice versa. The cage ladder 2 can also be lengthened to the ground under the bridge or the working platform on the water through the flange joint 4 at the lower end, so that the passing of the working platform (such as a hanging basket 11) on the bridge, under the bridge, on the ground (or the working platform on the water surface) is realized.

The utility model discloses during the installation uses, can be earlier with the utility model discloses on the bridge floor (or guardrail) is violently arranged in to the level, protect cage cat ladder 2 and bridge to being parallel, slowly release along the bridge transversely and protect cage cat ladder 2 again, the utility model discloses to take one's place by oneself by gravity, protect cage cat ladder 2 bottom to drag through the rope and hold control falling speed, couple truss 1 colludes on crashproof railing or falls on the bridge floor.

The utility model has reasonable structure and simple use, and can provide a safe, reliable and convenient channel for constructors; the portable air conditioner is easy to carry, can be expanded and prolonged to adapt to different working conditions, and is wide in application range and good in economical efficiency.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A lattice type ladder stand is characterized by comprising a hook truss (1) and a cage protection ladder stand (2), wherein the hook truss (1) is of a double-frame inverted L-shaped space truss structure integrally, the cage protection ladder stand (2) is a cuboid formed by four long rods, the four long rods are perpendicular to the ground and fixed, the two long rods of each vertical surface are connected with a plurality of horizontal rods, the number of the horizontal rods on the vertical surface connected with the hook truss (1) is larger than that of the horizontal rods arranged on other surfaces, the surface is a crawling surface, the installed horizontal rods are used as crawling rods, the end portion of the horizontal section of the hook truss (1) is welded with one end of the cage protection ladder stand (2), one end of the cage protection ladder stand (2) connected with the hook truss (1) is defined as an upper end, the other end of the hook truss is a lower end, the cage protection ladder stand (2) is arranged perpendicular to the ground, the ladder stand structure is arranged on the vertical side surface where the ladder stand structure is defined as a crawling surface, and the other vertical side surfaces of the cage protection ladder.

2. The lattice ladder of claim 1, wherein: the lower ends of four long rods of the protective cage ladder stand (2) extend out, a flange node (4) is mounted at the end part, the protective cage ladder stand (2) is fixed through the flange node (4), the flange node (4) comprises a flange plate (4-1), a stiffening rib plate (4-2) and a ladder stand vertical rod (4-4), the vertical chord rod of a frame lattice at the lower end of the protective cage ladder stand (2) is welded at one end of the ladder stand vertical rod (4-4), the other end of the ladder stand vertical rod (4-4) is vertically welded in the middle of the flange plate (4-1), the stiffening rib plate (4-2) is arranged at the periphery of the joint of the flange plate (4-1) and the ladder stand vertical rod (4-4), the flange plate (4-1) is provided with a plurality of threaded holes along the circumference, and the flange plates (4-1) of different flange nodes (4), the bolt (4-3) is mounted in the threaded hole.

3. The lattice ladder of claim 2, wherein: the ground of installation cage cat ladder (2) is established piling bar (13), cage cat ladder (2) lower extreme is tied up with piling bar (13) through flange node (4) and is tied up to bundle fixedly.

4. The lattice ladder of claim 2, wherein: still include a plurality of extension cage cat ladder (6), the extension cage cat ladder comprises four stock cuboids, and four stock perpendicular to ground are fixed, and a plurality of horizon bar are connected to the two stock of every perpendicular, and four stock both ends stretch out, and equal mounting flange node (4) of tip, cage cat ladder (2) lower extreme is connected the extension through flange node (4) and is protected cage cat ladder (6), and the other end that the extension protected cage cat ladder (6) passes through flange node (4) and connects another extension cage cat ladder (6) or ground, and the ground that the installation extension protected cage cat ladder (6) is established piling bar (13), and the extension protects cage cat ladder (6) to tie up with piling bar (13) through flange node (4) and fixes, the extension protects the perpendicular side that cage cat ladder (6) is located the crawling face of cage cat ladder (2) and establishes the cat ladder structure.

5. The lattice ladder of claim 4, wherein: the hook truss (1), the protective cage ladder stand (2) and the extension protective cage ladder stand (6) are all formed by welding high-strength small-section circular steel pipes, and the cross section sizes of the protective cage ladder stand (2) and the extension protective cage ladder stand (6) are not less than 60cm to 60 cm.

6. The lattice ladder of claim 1, wherein: every truss unit of couple truss (1) all is equipped with oblique web member, lays scaffold board (3) along horizontal chord member in the horizontal segment of couple truss (1).

7. The lattice ladder of claim 4, wherein: the frame lattices at the two ends of the cage protection ladder stand (2) and the expansion cage protection ladder stand (6) are welded with oblique web members on the non-creeping surface, and the creeping rods on the creeping surface are more than the horizontal rods on other vertical side surfaces.

8. The lattice ladder of claim 4, wherein: protect a plurality of horizon bar that cage cat ladder (2) and extension protected cage cat ladder (6) and be equipped with interim rest platform (8), interim rest platform (8) set up on the horizon bar of non-creeping face and revolve the horizon bar, and the rotation angle is 90 from the non-creeping face of installing it to the horizontal plane.

9. A lattice ladder as claimed in claim 3 and claim 4, wherein: the protective cage ladder stand (2) or the expanded protective cage ladder stand (6) is fixedly connected with a bottom end fastening end baffle (7) on the ground.

10. The lattice ladder of claim 4, wherein: and safety nets (5) are laid on the cage ladder stands (2) and the expanded cage ladder stands (6) along the inner sides of the non-creeping surfaces.

Images