CN211897895U

CN211897895U - Movable bridge cantilever arm bottom construction platform

Info

Publication number: CN211897895U
Application number: CN202020319714.XU
Authority: CN
Inventors: 赵亚敏; 陈慧娜; 段坤朋; 王炜萍; 徐山山
Original assignee: Zhejiang Zhongtian Hengzhu Steel Structure Co ltd
Current assignee: Zhejiang Zhongtian Hengzhu Steel Structure Co ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-11-10
Anticipated expiration: 2030-03-13

Abstract

The utility model discloses a mobilizable bridge cantilever arm bottom construction platform belongs to the construction equipment field. The upper frame body of the platform frame retracts relative to the lower frame body, the front end of the upper frame body is provided with two upper sliding assemblies in parallel, and the front end of the lower frame body is provided with two lower sliding assemblies in parallel; the upper sliding assemblies comprise connecting blocks, transverse arms, first pulleys, second pulleys and third pulleys, the sliding rails are arranged on the upper surface of the bridge cantilever arm in parallel, the first pulleys and the second pulleys in the two upper sliding assemblies are in sliding fit with the sliding rails, and the front end of the lower frame body is supported on the side face of the bridge main body below the bridge cantilever arm through the two lower sliding assemblies and can roll along the side face of the bridge main body; the ladder stand is arranged on the back of the platform frame. This construction platform passes through the slide rail and carries on the bridge is chosen the arm, and the latter half of its frame stretches into the bridge and chooses the arm below, and then when conveniently choosing the arm bottom to the bridge and being under construction, can avoid influencing the below and pass or navigation.

Description

Movable bridge cantilever arm bottom construction platform

Technical Field

The utility model belongs to the construction equipment field, concretely relates to mobilizable bridge cantilever arm bottom construction platform.

Background

The cantilever construction of the two sides of the bridge main body comprises the working procedures of steel structure welding, concrete template installation and dismantling and the like, and the construction is troublesome. When the bottom of the cantilever arm of the bridge is constructed in the prior art, the common method is to arrange a construction platform facility capable of climbing upwards below the bridge.

For example, chinese utility model CN201820717956.7 discloses a support for bridge construction, including the supporting seat, install the support column pneumatic cylinder at the supporting seat top, fix the support column at support column pneumatic cylinder piston rod top and fix the bridge backup pad at the support column top, install the construction platform in the below of bridge backup pad on the support column, the bridge backup pad level is laid and articulated respectively at the both ends of bridge backup pad have a bridge to support the pterygoid lamina, the bridge supports the pterygoid lamina and passes through pterygoid lamina support pneumatic cylinder and fix the pterygoid lamina supporting seat connection in the support column both sides, and the both sides of supporting seat are fixed with an outside support arm that extends respectively, and every support arm is connected at the backup pad on ground through supporting seat pneumatic cylinder and convenient support towards one side.

For another example, china utility model CN201920769757.5 also discloses a bridge construction support, including the bridge body, the both sides that the bridge body bottom was kept away from all are equipped with first support, through being equipped with bei lei liang support frame, be convenient for carry out the layering to first support and second support, reduce the bearing burden of first support by the second support, avoid its fracture, improve its steadiness, be equipped with the gyro wheel through limiting plate and connecting plate, correspond the roll spacing groove of bridge body and base respectively, when dragging through the trailer, be convenient for remove, it is spacing with bridge body both sides side to cooperate the limiting plate simultaneously, can avoid the gyro wheel dislocation, through the bottom plate by bei lei liang reinforcing frame, consolidate it, improve the bearing capacity of gyro wheel, the support column of first support and second support, it is fixed to connect through the mount alternately.

Above-mentioned bridge construction support although can satisfy the demand of bridge body bottom construction, nevertheless because its whole great space that needs of occupying of device is operated. Therefore, when the lower part of the bridge is a road surface, traffic control is often needed, and the aerial ladder is used for construction, so that traffic passing is influenced. And when the lower part of the bridge is the water surface, a supporting platform needs to be erected, even piling is needed, the construction measure cost is high, the construction period is long, and the water transportation is influenced.

Therefore, there is a need for a platform facility that can avoid affecting the traffic below and can conveniently construct the bottom of the cantilever of the bridge.

Disclosure of Invention

An object of the utility model is to solve the problem that exists among the prior art to a mobilizable bridge cantilever arm bottom construction platform is provided.

The utility model discloses the concrete technical scheme who adopts as follows:

a movable bridge cantilever arm bottom construction platform comprises a platform frame, an upper sliding assembly, a lower sliding assembly, a ladder stand and a slide rail; the platform frame is made of rigid material, and the upper frame body is retracted relative to the lower frame body; the front end of the upper frame body is provided with two upper sliding components in parallel, and the front end of the lower frame body is provided with two lower sliding components in parallel; the upper sliding assembly comprises a connecting block, a cross arm, a first pulley, a second pulley and a third pulley, wherein the connecting block is connected with the upper frame body, two sides of the connecting block respectively pass through the cross arm and the second pulley, and rotating shafts of the first pulley and the second pulley are in the vertical direction; the third pulley is arranged on the connecting block, and a rotating shaft of the third pulley is along the horizontal direction; the sliding rails are arranged on the upper surface of the bridge cantilever arm in parallel, a first pulley and a second pulley in the two upper sliding assemblies are in sliding fit with the sliding rails, and the front end of the lower frame body is supported on the side face of the bridge main body below the bridge cantilever arm through the two lower sliding assemblies and can roll along the side face of the bridge main body; the ladder stand is arranged on the back of the platform frame.

Preferably, in the upper sliding assembly, the first pulley and the second pulley have the same shape and size, and the whole upper sliding assembly has a symmetrical structure.

Preferably, the lower sliding component is a roller arranged horizontally, and the rotating shaft of the roller is along the vertical direction.

Preferably, the platform frame is formed by welding a square steel pipe, H-shaped steel or round steel.

Preferably, the slide rails are laid along the direction of the bridge.

Preferably, the slide rail is made of H-shaped steel, and the first pulley and the second pulley are supported on a web plate on one side of the H-shaped steel to roll.

Furthermore, two ends of a web plate of the H-shaped steel are provided with blocking devices for limiting derailment of the first pulley and the second pulley.

Preferably, a driving motor is arranged in the upper sliding assembly.

Preferably, the platform frame is internally provided with a space for an administrator to climb up and down the ladder.

Preferably, in the upper sliding assembly, the bottom of the third pulley is supported on the upper surface of the cantilever arm of the bridge.

Preferably, the bottom of the platform frame is paved with a bearing base plate, and the periphery and the top of the platform frame are paved with protective plates.

Compared with the prior art, the utility model, following beneficial effect has:

1) the utility model discloses a construction platform passes through the slide rail carry on the bridge is chosen the arm, and the latter half of its frame stretches into the bridge and chooses the arm below, and then when choosing the arm bottom to the bridge conveniently and carrying out the construction, can avoid influencing the below current or navigation.

2) The utility model discloses an each component simple manufacture, easily processing, its material selection can adopt the common part in the construction place, need not the non-system of maring, can the whole cost of greatly reduced.

3) The utility model discloses a construction platform can remove along the slide rail, and cooperation electric control can realize automatic sliding moreover, convenient operation, and the constructable area is big.

4) The utility model discloses a construction platform is equipped with the cat ladder at the frame back, can make things convenient for constructor current.

5) The utility model discloses construction platform's frame both sides member can double as the railing, provides the safety guarantee, and bottom installation plank for operating personnel and equipment provide the platform, upper portion and installation galvanized steel sheet or other panel all around can prevent wind and rain, and construction rubbish does not drop, welding spark does not drop.

Drawings

FIG. 1 is an isometric view of a movable bridge cantilever bottom construction platform;

FIG. 2 is a side view of a construction platform at the bottom of a bridge cantilever;

FIG. 3 is a rear view of a construction platform at the bottom of a bridge cantilever;

FIG. 4 is a schematic structural view of the upper slide assembly;

FIG. 5 is an installation schematic diagram of a construction platform at the bottom of a bridge cantilever;

FIG. 6 is another schematic installation diagram of a construction platform at the bottom of a bridge cantilever;

FIG. 7 is another schematic installation diagram of a construction platform at the bottom of a bridge cantilever;

fig. 8 is a schematic view of a blocking device on a slide rail.

The reference numbers in the figures are: the bridge crane comprises a platform frame 1, an upper sliding assembly 2, a lower sliding assembly 3, a ladder stand 4, a sliding rail 5, a bridge cantilever arm 6, a connecting block 201, a cross arm 202, a first pulley 203, a second pulley 204 and a third pulley 205.

Detailed Description

The invention will be further elucidated and described with reference to the drawings and embodiments. The utility model discloses in the technical characteristics of each embodiment under the prerequisite that does not conflict each other, all can carry out corresponding combination.

As shown in fig. 1, in order to provide a movable construction platform for the bottom of a cantilever arm of a bridge in a preferred embodiment of the present invention, its main components include a platform frame 1, an upper sliding component 2, a lower sliding component 3, a ladder 4 and a sliding rail 5. The following describes in detail the implementation combinations and arrangements of the components.

The platform frame 1 is made of rigid materials, is convenient to obtain materials, and can be formed by welding square steel pipes, H-shaped steel or round steel. The structural strength of the platform frame 1 should meet the load bearing requirements. As shown in fig. 2, the whole body can be divided into an upper frame body and a lower frame body, but the two parts are integrally welded together, and are not separate two parts. The upper frame body contracts for a certain distance relative to the lower frame body, the specific inward contraction distance needs to be determined according to the width of a bridge cantilever arm, and the adjustment can be carried out according to the actual construction working condition. The front end of the upper frame body is provided with two upper sliding components 2 in parallel, and the front end of the lower frame body is provided with two lower sliding components 3 in parallel. As shown in fig. 3, a ladder stand 4 is provided on the back of the platform frame 1 for an applicator worker to go up and down. Also, in consideration of safety of construction climbing, the ladder 4 should be disposed at a back side of the platform frame 1 near the inside, with an inner space of the platform frame 1 for an applicator to climb up and down. Therefore, the rod pieces on the two sides of the frame can be used as the railing, and safety guarantee is provided.

As shown in fig. 4, the upper sliding assembly 2 of the present invention includes a connecting block 201, a cross arm 202, a first pulley 203, a second pulley 204, and a third pulley 205. Wherein connecting block 201 is used for with upper portion frame body coupling, connecting block 201 can be connected with upper portion frame body is detachable through the bolt that excels in, also can direct welded fastening. The two sides of the connecting block 201 are respectively connected with a first pulley 203 and a second pulley 204 through a cross arm 202, the shapes and the sizes of the first pulley 203 and the second pulley 204 are the same, and the rotating shafts of the first pulley 203 and the second pulley 204 are along the vertical direction, so that the first pulley 203 and the second pulley 204 can roll horizontally. In addition, the third pulley 205 is provided on the connection block 201, and a rotation shaft of the third pulley 205 is in a horizontal direction, whereby the third pulley 205 can vertically roll. The whole upper sliding component 2 is in a symmetrical structure.

The upper sliding component 2 is matched with the sliding rail 5 to realize the integral movement of the whole platform frame 1 along the extension direction of the bridge, so that the construction is conveniently carried out on different positions of the bridge, and the construction range is enlarged. Therefore, the slide rails 5 need to be arranged on the upper surface of the cantilever arm 6 of the bridge in parallel and are fixedly connected with the main body of the bridge through welding or bolts, and the length of the rails is set according to construction requirements. The first pulley 203 and the second pulley 204 of the two upper sliding assemblies 2 are in sliding fit with the sliding rail 5. In this embodiment, the sliding rail 5 is made of H-shaped steel laid along the direction of the bridge, the lower flange of the H-shaped steel is attached to the upper surface of the cantilever arm 6 of the bridge, and the web thereof is vertical, so that the first pulley 203 and the second pulley 204 can be supported on the web on one side of the H-shaped steel to roll, as shown in fig. 5 to 7.

In addition, in order to prevent the upper sliding assembly 2 from derailing, two ends of the web of the H-shaped steel need to be provided with blocking devices for limiting the extreme displacement of the first pulley 203 and the second pulley 204. In the embodiment, as shown in fig. 8, the blocking device is a steel sheet 502 welded to both side ends of the H-shaped steel 501 and a stiffening rib, and the steel sheet 502 can block the first pulley 203 or the second pulley 204 from rolling continuously under the support of the stiffening rib, thereby achieving the function of preventing derailment.

In the above construction platform, since the whole frame has a structure with a small top and a large bottom, the front end of the lower frame body needs to be supported on the side of the bridge body below the cantilever arm 6 through the two lower slide assemblies 3 in addition to the upper part supported by the upper slide assembly 2. In this embodiment, the lower sliding component 3 is a roller horizontally arranged, and the rotating shaft of the roller is along the vertical direction, and can roll along the side of the bridge body in the whole moving process.

The self weight of the construction platform can be supported by the third pulley 205, and a hoisting load-bearing component can be additionally arranged, for example, hoisting by a steel wire rope. When the third pulley 205 is used for supporting, the bottom of the third pulley 205 in the upper sliding assembly 2 needs to be supported on the upper surface of the bridge cantilever 6 to slide, and at this time, the first pulley 203 and the second pulley 204 are preferably kept at a certain distance from the upper surface of the bridge cantilever 6.

In addition, the whole movement of the construction platform can be manually dragged, but a driving motor is preferably arranged in the upper sliding assembly 2 to provide moving power. The drive motor may drive one or both of the first pulley 203 and the second pulley 204.

In addition, a bearing base plate can be laid at the bottom of the platform frame 1, and protective plates are laid on the periphery and the top of the platform frame so as to form a construction platform with protection. Preferably, the bottom of the steel plate is provided with a wood plate, a platform is provided for operators and equipment, the galvanized steel plates or other plates are arranged on the upper part and around the steel plate, wind and rain can be prevented, construction wastes do not fall off, and welding sparks do not fall off. The top of the platform frame 1 generally needs to reserve enough passage positions for personnel to pass up and down through the ladder stand, and the diameter of the passage is not less than 500 mm.

The above-mentioned embodiments are merely a preferred embodiment of the present invention, but it is not intended to limit the present invention. Various changes and modifications can be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, all the technical schemes obtained by adopting the mode of equivalent replacement or equivalent transformation fall within the protection scope of the utility model.

Claims

1. A movable bridge cantilever arm bottom construction platform is characterized by comprising a platform frame (1), an upper sliding component (2), a lower sliding component (3), a ladder stand (4) and a sliding rail (5);

the platform frame (1) is made of rigid materials, and the upper frame body of the platform frame is retracted relative to the lower frame body; the front end of the upper frame body is provided with two upper sliding components (2) in parallel, and the front end of the lower frame body is provided with two lower sliding components (3) in parallel; the upper sliding assembly (2) comprises a connecting block (201), a cross arm (202), a first pulley (203), a second pulley (204) and a third pulley (205), wherein the connecting block (201) is connected with the upper frame body, two sides of the connecting block (201) are respectively connected with the first pulley (203) and the second pulley (204) through the cross arm (202), and rotating shafts of the first pulley (203) and the second pulley (204) are along the vertical direction; the third pulley (205) is arranged on the connecting block (201), and a rotating shaft of the third pulley (205) is along the horizontal direction; the sliding rails (5) are arranged on the upper surface of the bridge cantilever arm (6) in parallel, a first pulley (203) and a second pulley (204) in the two upper sliding assemblies (2) are in sliding fit with the sliding rails (5), and the front end of the lower frame body is supported on the side surface of the bridge main body below the bridge cantilever arm (6) through the two lower sliding assemblies (3) and can roll along the side surface of the bridge main body; the ladder stand (4) is arranged on the back of the platform frame (1).

2. The mobile bridge cantilever bottom construction platform of claim 1, wherein the upper sliding assembly (2) has the same shape and size of the first pulley (203) and the second pulley (204), and the whole upper sliding assembly (2) has a symmetrical structure.

3. The mobile construction platform for the bottom of a cantilever bridge arm according to claim 1, wherein the lower sliding assembly (3) is a horizontally arranged roller, and the rotating shaft of the roller is in the vertical direction.

4. The movable construction platform for the bottom of the cantilever arm of a bridge according to claim 1, wherein the platform frame (1) is formed by welding square steel pipes, H-shaped steel or round steel.

5. The mobile construction platform for the bottom of the cantilever arm of a bridge according to claim 1, wherein the sliding rails (5) are laid along the running direction of the bridge.

6. The movable bridge cantilever bottom construction platform according to claim 1, wherein the slide rail (5) is made of H-shaped steel, and the first pulley (203) and the second pulley (204) are supported on a web plate on one side of the H-shaped steel to roll; two ends of a web plate of the H-shaped steel are provided with blocking devices for limiting derailment of the first pulley (203) and the second pulley (204).

7. The mobile bridge cantilever bottom construction platform of claim 6, wherein the upper sliding assembly (2) is provided with a driving motor.

8. The movable construction platform for the bottom of the cantilever arm of a bridge according to claim 1, wherein a space for a constructor to climb up and down the ladder (4) is provided inside the platform frame (1).

9. The mobile bridge cantilever bottom construction platform of claim 1, wherein the upper sliding assembly (2) is supported on the upper surface of the bridge cantilever (6) at the bottom of the third pulley (205).

10. The movable construction platform for the bottom of the cantilever arm of the bridge as claimed in claim 1, wherein the platform frame (1) is laid with a bearing pad at the bottom and protective plates at the periphery and top.