CN210288130U

CN210288130U - Folding cage is used in construction of bridge centre joint

Info

Publication number: CN210288130U
Application number: CN201920906372.9U
Authority: CN
Inventors: 冷崇兆; 段益庆; 杨旸; 杨尚平
Original assignee: Yunnan Huadun Safety Technology Co ltd
Current assignee: Yunnan Huadun Safety Technology Co ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-04-10
Anticipated expiration: 2029-06-17

Abstract

A folding suspension cage for bridge center joint construction comprises a fixing frame and folding frames, wherein the width of the fixing frame is smaller than that of a construction gap, the two sides of the fixing frame are hinged with the folding frames, limiting baffles are arranged on the left side and the right side of the bottom of the fixing frame, a suspension device is arranged at the top of the fixing frame, and a lifting device is arranged at the upper part of the folding frame; fixed frame structure: the bottoms of the two groups of vertical parallel frames are fixedly connected with a horizontal fixed frame bottom plate; the parallel frame is formed by uniformly distributing horizontal cross bars between two vertical fixed bars, and the horizontal cross bars are fixedly connected with the fixed bars; the folding frame is: the upper part and the lower part of the left side and the right side of the outer frame are both hinged with connecting rods, and the lower part of the outer frame is hinged with a folding frame bottom plate. The utility model discloses think about ingenious, reasonable in design, construction convenience, safe and reliable can improve construction quality and efficiency greatly and be a novel folding construction cage that is used for bridge gap department.

Description

Folding cage is used in construction of bridge centre joint

Technical Field

The utility model relates to an equipment for being used for erectting and assembling the bridge specially, concretely relates to folding cage is used in bridge centre joint construction.

Background

With the continuous development of economy, the construction of highways is not well established, and a large number of viaducts cannot be used in the period. These bridges are usually very tall, in the order of tens of meters and more than a hundred meters from the deck to the ground. The bridge construction process is generally as follows: and erecting a prestressed girder on the pier, and then paving a pavement on the top of the prestressed girder. Before the prestressed beam is laid on the road surface, a constructor must go down to the lower part of the bridge floor to pre-tighten the prestressed beam to form prestress. To do this, a gap of about 30 cm in width is usually left between the two prestressed beams. The constructors can only perform prestressing operation from the reserved gap to the lower part of the bridge floor. Under the bridge deck, no pivot can be found. In the existing construction method, two lifting hooks are firstly put down, a transverse plate is hung between the two lifting hooks, a person falls down on the transverse plate and then builds a guardrail and other devices to form a simple construction platform, and constructors perform pre-tightening operation on a prestressed beam on the platform. After the construction is finished, the simple construction platform is dismantled. During the process of building the simple construction platform and dismantling, workers are almost in a completely unprotected place. The operation is very inconvenient and dangerous.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a technical scheme of folding cage is used in bridge centre joint construction to the difficult point of current prestressed beam construction. The technical scheme can safely and conveniently pre-tighten the prestressed beams from the gap between the two prestressed beams to the lower part of the bridge floor.

The technical scheme of the utility model is that: a folding suspension cage for bridge center joint construction comprises a fixed frame and a folding frame, and is characterized in that the width of the fixed frame is smaller than the width of a construction gap, F is less than F, the two sides of the fixed frame are hinged with the folding frame, the left side and the right side of the bottom of the fixed frame are respectively provided with a limiting baffle, the top of the fixed frame is provided with a suspension device, and the upper part of the folding frame is provided with a lifting device;

the structure of the fixed frame is as follows: the bottoms of the two groups of vertical parallel frames are fixedly connected with a horizontal fixed frame bottom plate; the parallel frame is formed by uniformly distributing horizontal cross bars between two vertical fixed bars, and the horizontal cross bars are fixedly connected with the fixed bars;

the folding frame is characterized in that the upper part and the lower part of the left side and the right side of the outer frame are both hinged with connecting rods, and the lower part of the outer frame is hinged with a bottom plate of the folding frame.

The width of the fixing frame is 5-10 cm smaller than the construction gap.

The lower parts of the outer sides of the fixed frame and the folding frame are provided with baffles.

The hanging device is characterized in that a hanging hole is formed in the top of the fixed frame, and a hook or a pull rope is arranged on the upper portion of the folding frame.

The bottom of the fixed frame bottom plate is provided with universal wheels.

The construction of pre-tightening the prestressed beam below the bridge deck is a difficult point in bridge construction. The utility model discloses a design the cage of being under construction for fixed frame and folding frame hinge combination, the folding frame of fixed frame both sides is collapsible advances fixed frame, and construction cage width after folding is less than two prestressed beam gap widths, can be convenient current from the gap, when the cage down to the construction position after, opens the folding frame of cage both sides again, the cage width at this moment can satisfy the needs of construction. The utility model has the advantages of ingenious design that the opening and folding of folding frame do not need special switch structure and power just can make things convenient for opening and folding safe. The utility model discloses a fixed frame and folding frame are all articulated through the connecting rod, become two parallelogram mechanisms, when carrying folding frame to the rising, articulated connecting rod and at frame articulated folding frame bottom plate by the horizontality around respective round pin rotatory to the vertical state on the frame, make folding frame of opening fold for flat fixed frame that gets into, when getting rid of the external force of carrying folding frame, folding frame is rotatory downwards under the effect of self gravity, open folding frame automatically, when folding frame is rotatory to folding frame bottom plate when being in horizontal position, limit baffle restriction folding frame is rotatory, realized folding frame automatic stable convenient opening, and safe and reliable. The utility model discloses be equipped with the hanging hole on fixed frame top, can be with hanging on the bridge floor of cage convenience safety. The utility model discloses establish the pulling device on folding frame upper portion, be equipped with couple or stay cord on folding frame upper portion. The utility model discloses all be equipped with the baffle in fixed frame and folding frame outside, fixed frame bottom plate and folding frame bottom plate can be made by skid-proof decorative pattern steel sheet, constitute semi-enclosed construction platform, safe and reliable during the construction with the bottom around the cage. After pre-tightening construction of the prestressed beams is finished, the platform does not need to be demolishd in danger below the bridge floor, a horizontal rod on the fixed frame can be used by a constructor as a ladder, the constructor can go in and out of the construction cage, after the constructor leaves the construction cage, only the folding frames on two sides need to be lifted upwards, so that the opened folding frames can be folded into the fixed frame in a flat shape, the width of the folded construction cage is smaller than the gap between the two prestressed beams, the construction cage can be conveniently lifted upwards from the gap, great convenience is brought to construction, and potential safety hazards of construction below the bridge floor are eliminated. The utility model discloses be equipped with the universal wheel bottom fixed frame, removal that can be convenient. The utility model discloses think about ingenious, reasonable in design, construction convenience, safe and reliable has thoroughly changed and has assembled construction platform temporarily under the bridge floor in the past, neither convenient construction unsafe situation again, has improved construction quality and efficiency greatly and is a neotype folding construction cage that is used for bridge gap department.

Drawings

FIG. 1 is a schematic perspective view of the structure of the present invention in an expanded state;

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

FIG. 3 is a schematic perspective view of the fixing frame structure of the present invention;

FIG. 4 is a schematic perspective view of the folding frame structure of the present invention;

FIG. 5 is a schematic perspective view of the bottom structure of the present invention;

FIG. 6 is a schematic perspective view of a partially enlarged portion A of FIG. 5;

FIG. 7 is an exploded view of the present invention;

FIG. 8 is a schematic perspective view of a part B of FIG. 7 in a partially enlarged configuration;

FIG. 9 is a perspective view of the folding frame of the present invention in a state of entering and exiting from the gap when folded;

FIG. 10 is a perspective view of the foldable frame of the present invention in an open state;

in the figure: 100-fixed frame, 101-parallel frame, 102-cross bar, 103-fixed frame bottom plate, 104-universal wheel, 105-limit baffle, 106-hanging hole, 107-steel tube, 200-folding frame, 201-outer frame, 202-connecting rod, 203-folding frame bottom plate, 301-baffle, 401-prestressed beam.

Detailed Description

The utility model discloses a concrete implementation way does: as shown in the figures 1-8 of the drawings,

the width of the gap F between the two prestressed beams 401 is about 30 cm, the frame-type fixing frame 100 is welded by using metal pipes, angle steels and plates as shown in fig. 3, the width F is 25 cm, the height is 1.5-2 m, and the height can be specifically designed according to the specific size of the bridge. The fixing frame 100 is formed by welding a frame bottom plate 103 on the bottoms of two groups of parallel frames 101 by using profiles, and a pattern steel plate is used as a panel; the parallel frame is formed by welding horizontal cross rods 102 uniformly between two vertical fixed rods, the distance between the horizontal cross rods is 30-40 cm, two sides of a fixed frame 100 are hinged with a folding frame 200, two ends of the left side and the right side of the bottom of the fixed frame are respectively welded with a limiting baffle 105, the limiting baffles protrude out of a bottom plate of the fixed frame by 5-8 mm, the limiting baffles can be respectively arranged on the left side and the right side, and the top of the fixed frame 100 is provided with a suspension device; the hanging device is provided with a hanging hole 106 at the top of the fixing frame 100. The lifting device on the upper part of the folding frame 200 is provided with a hook on the upper part of the folding frame, a rope is tied on the hook, the other end of the rope is fixed on the bridge floor, or one end of a pull rope is tied on the upper part of the folding frame, and the other end of the pull rope is fixed on the bridge floor. The bottom of the fixed frame bottom plate 103 is provided with a universal wheel 104.

An outer frame 201 of the frame type folding frame 200 is welded by metal pipes, angle steels and plates, the height is 1-1.2 m, as shown in figure 4, connecting rods 202 are hinged to the upper part and the lower part of the left side and the right side of the outer frame, the angle between the connecting rods and the plane of the outer frame is as shown in figure 4, a folding frame bottom plate 203 made of profiled steel plates is hinged to the lower part of the outer frame, and a pattern steel plate is used as a panel; the outer frame is hinged with the connecting rod: the outer frame is provided with a hole, the end of the connecting rod is provided with a hole, and the hole is in clearance fit connection with the hole on the fixing frame and the hole on the connecting rod respectively through a pin; the hinges of the lower part of the outer frame and the bottom plate 203 of the folding frame are as follows: the outer frame is provided with a hole, the folding frame bottom plate is provided with a hole, and the hole is in clearance fit connection with the hole on the outer frame and the hole on the folding frame bottom plate respectively through a pin;

the two sides of the fixing frame 100 are hinged with the folding frame 200, and the specific structure is as follows: holes are arranged on the fixed frame and the folding frame, holes are arranged at two ends of the connecting rod 202 connected with the fixed frame and the folding frame, and the holes on the fixed frame or the folding frame and the holes on the connecting rod are in clearance fit connection through pins.

The lower parts of the outer sides of the fixing frame 100 and the folding frame 200 are provided with baffles 301 with the height of 50-100 cm.

The utility model discloses a use method: tighten up folding frame with couple or stay cord, make the utility model discloses a folding frame is the rugosity, penetrates the hanging hole of cage with steel pipe 107, will the utility model discloses put to the construction position from the gap of two prestressed beams, fixed steel pipe loosens and tightens up couple or stay cord of folding frame, and folding frame is rotatory downwards to limit baffle under the effect of dead weight, and folding frame is opened, and the area of cage is the area of fixed frame and the area of the folding frame in both sides this moment, is enough to satisfy the needs of construction. The horizontal pole that constructor can fix on the frame is the ladder construction in getting into the cage, and after the construction, constructor uses the horizontal pole on the fixed frame to leave the cage as the ladder, gets back to the bridge floor, lifts couple or stay cord, makes the folding fixed frame that gets into of folding frame, promotes the cage again and returns ground, the utility model discloses a cage bottom surface is equipped with the universal wheel, removal cage that can be convenient.

Claims

1. A folding suspension cage for bridge center joint construction comprises a fixing frame (100) and a folding frame (200), and is characterized in that the width of the fixing frame (100) is smaller than the width of a construction gap, F is less than F, the two sides of the fixing frame (100) are hinged with the folding frame (200), the left side and the right side of the bottom of the fixing frame are both provided with limit baffles (105), the top of the fixing frame (100) is provided with a suspension device, and the upper part of the folding frame (200) is provided with a lifting device;

the structure of the fixing frame (100) is as follows: the bottoms of the two groups of vertical parallel frames (101) are fixedly connected with a horizontal fixed frame bottom plate (103); the parallel frame is characterized in that horizontal cross rods (102) are uniformly distributed between two vertical fixed rods and are fixedly connected with the fixed rods;

the folding frame (200) is characterized in that connecting rods (202) are hinged to the upper side and the lower side of the left side and the right side of an outer frame (201), and a folding frame bottom plate (203) is hinged to the lower side of the outer frame.

2. The folding suspension cage for bridge center joint construction according to claim 1, characterized in that: the width of the fixing frame (100) is 5-10 cm smaller than the construction gap.

3. The folding suspension cage for bridge center joint construction according to claim 1, characterized in that: the lower parts of the outer sides of the fixed frame (100) and the folding frame (200) are respectively provided with a baffle (301).

4. The folding suspension cage for bridge center joint construction according to claim 1, characterized in that: the hanging device is characterized in that a hanging hole (106) is formed in the top of the fixing frame (100), and a lifting device arranged on the upper portion of the folding frame (200) is provided with a hook or a pull rope.

5. The folding suspension cage for bridge center joint construction according to claim 1, characterized in that: the bottom of the fixed frame bottom plate (103) is provided with universal wheels (104).