CN211200108U

CN211200108U - I-shaped steel beam bridge displacement formula welding construction platform

Info

Publication number: CN211200108U
Application number: CN201921955348.0U
Authority: CN
Inventors: 叶顺; 陈文强; 吕正东
Original assignee: Haibo Heavy Engineering Sciece and Technology Co Ltd
Current assignee: Haibo Heavy Engineering Sciece and Technology Co Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-08-07
Anticipated expiration: 2029-11-13

Abstract

The utility model provides a movable welding construction platform for an I-shaped steel beam bridge, which comprises a platform frame body, wherein the platform frame body is of a rectangular frame structure, and a steel plate net is laid on the surface of the platform frame body; the bottom of the platform frame body is provided with sliding rollers which are bilaterally symmetrical, the treads of the sliding rollers are positioned on the upper surfaces of the two I-shaped steel beam flange plates, and the construction platform can longitudinally move along the upper planes of the I-shaped steel beam flange plates through the sliding rollers; the bottom of the platform frame body is also provided with limiting idler wheels, the transverse distance between the limiting idler wheels corresponds to the width distance between the flanges of the two I-shaped steel beams, and the treads of the limiting idler wheels are positioned on the inner side walls of the flanges of the I-shaped steel beams. The utility model discloses a welding construction platform simple structure, simple to operate, the practicality is strong, and is not high to the operational environment space requirement, and does not need to set up facilities such as temporary stand in addition, effectively solves the problem of bridge floor bottom welding construction difficulty, and it is convenient to remove in the use, need not repeated dismouting, and the efficiency of construction improves greatly.

Description

I-shaped steel beam bridge displacement formula welding construction platform

Technical Field

The utility model relates to a I-steel beam bridge displacement formula welding construction platform belongs to bridge engineering technical field.

Background

Along with the development of economy in China, traffic infrastructure is increasingly sound, bridges are used as important components of roads and railways and are rapidly developed, and H-shaped structural steel bridges are important means for solving rapid traffic of mountainous roads due to short construction period and many construction advantages. In the prior art, for the welding construction of an I-shaped steel beam bridge position, facilities such as a temporary support is erected or a temporary springboard is paved to complete the welding construction, and the problems exist in the prior art that: the temporary support is difficult to erect due to the influence of geographical environment, the cost investment is relatively high, the temporary support is inconvenient to move and convert in the using process and needs to be repeatedly disassembled and assembled, and the main structure of the bridge is damaged to a certain extent in the disassembling and assembling process; on the other hand, the construction is usually carried out at high altitude, and the gangplank with the temporary erection measures has very simple and crude protection measures due to the narrow operation surface, so that the potential safety hazard is very large, a large amount of time is needed for dismounting and transferring, the construction under the longer working condition of an operation line is not facilitated, and the construction efficiency is low.

Disclosure of Invention

The utility model aims to overcome exist not enough among the prior art to an I-steel beam bridge displacement formula welding construction platform is provided, this welding construction platform simple structure, simple to operate, the practicality is strong, it is not high to the operational environment space requirement, and need not set up in addition facilities such as interim support, be particularly useful for the welding operation between I-steel beam bridge site web and the roof, effectively solve the problem of bridge floor bottom welding construction difficulty, it is convenient to remove in the use, need not repeated dismouting, the efficiency of construction improves greatly.

In order to achieve the above object, the utility model adopts the following technical scheme:

a movable welding construction platform for an I-shaped steel beam bridge comprises a platform frame body, wherein the platform frame body is of a rectangular frame structure, and a steel plate net is laid on the surface of the platform frame body; the bottom of the platform frame body is provided with more than 4 sliding rollers which are bilaterally symmetrical, the treads of the sliding rollers are positioned on the upper surfaces of the two I-shaped steel beam flange plates, and the construction platform can longitudinally move along the upper planes of the I-shaped steel beam flange plates through the sliding rollers; the platform support body bottom still is equipped with spacing gyro wheel, and spacing gyro wheel number is more than 4, and bilateral symmetry sets up, and the transverse distance between spacing gyro wheel is corresponding with two I-steel beam flange inter-plate width distances, and spacing gyro wheel tread is located the inside wall of I-steel beam flange board, with I-steel beam flange board upper surface vertical.

To the utility model discloses technical scheme's further improvement is:

safety guardrails are arranged on the transverse frames at the front end and the rear end of the platform frame body along the vertical direction.

The sliding idler wheels and the limiting idler wheels are connected with the platform frame body through sliding connecting shafts respectively.

The sliding connecting shaft consists of a small-diameter polished rod and a large-diameter top cap.

The sliding idler wheel and the limiting idler wheel are respectively arranged on a polished rod of the sliding connecting shaft, and the outer side of the polished rod is limited through the top cap.

The platform frame body is composed of two transverse frames and three longitudinal frames.

And the two transverse frames and the three longitudinal frames of the platform frame body are welded and fixed.

The sliding roller and the limiting roller are ball bearings.

And the rotating shaft of the limiting idler wheel is parallel to the upper surface of the flange plate of the I-shaped steel beam.

According to the technical scheme provided by the utility model, the bottom of the platform frame body of the utility model is provided with the sliding idler wheels which are arranged on the top surfaces of the two I-shaped steel beam flange plates, and no additional support or springboard is needed to be arranged; the sliding roller can enable the platform frame body to move longitudinally along the top surface of the flange plate of the I-shaped steel beam, and the platform frame body can be conveniently moved to the next working position after welding construction of one working position is completed; the platform frame body is fixedly connected with a steel plate net which can play a supporting role as a working platform surface, and the hollow part of the steel plate net is more beneficial to the development of operation; the bottom of the platform frame body is also provided with limiting idler wheels in a bilateral symmetry mode, and the limiting idler wheels can limit the platform frame body to longitudinally move along the top surfaces of the two I-shaped steel beam edge plates so as to prevent two sides of the platform frame body from falling off. Safety barrier is equipped with along vertical direction on the horizontal frame at both ends around the platform support body, and safety barrier can play the guard action to the operator, prevents that the operator from falling, and the security is high. The sliding idler wheels and the limiting idler wheels are respectively connected with the platform frame body through sliding connecting shafts, the idler wheels are easily damaged parts, and the maintenance, the assembly and the disassembly are more facilitated through the connection of the sliding connecting shafts. The platform frame body is composed of two transverse frames and three longitudinal frames, and the overall strength is also ensured on the basis of reducing the overall weight of the platform. The rotating shaft of the limiting idler wheel is parallel to the surface of the flange plate of the I-shaped steel beam, so that the platform frame body can be prevented from being inclined and clamped in the moving process.

Drawings

FIG. 1 is the overall structure schematic diagram of the movable welding construction platform for the bridge site of the I-shaped steel beam.

Fig. 2 is a schematic front view of fig. 1.

Fig. 3 is a schematic top view of fig. 1.

Fig. 4 is a partially enlarged view of fig. 2 at a.

In the figure: 1. the platform comprises a platform frame body, 2 steel plate meshes, 3 safety guardrails, 4 sliding connecting shafts A, 5 sliding rollers, 6I-shaped steel beam flange plates, 7 limiting rollers, 8 sliding connecting shafts B, 401 sliding connecting shafts A polished rods, 402 sliding connecting shafts A top caps, 801 sliding connecting shafts B polished rods and 802 sliding connecting shafts B top caps.

Detailed Description

The invention will be further described with reference to the following examples:

as shown in fig. 1, fig. 2 and fig. 3, the h-beam bridge displacement formula welding construction platform of this embodiment, including platform support body 1, platform support body 1 is the rectangular frame structure, platform support body 1 comprises two horizontal and three longitudinal frames rectangle support body, and wherein two horizontal frame both ends are stretched out respectively to set up in h-beam flange 6 upper surface, adopt welded fastening between horizontal frame and the longitudinal frame, two horizontal and three longitudinal frames are made by the equal cross-section bar cutting. The steel plate net 2 is laid on the surface of the platform frame body 1, the steel plate net 2 is a main structure for bearing constructors and equipment, and the edge of the steel plate net 2 is bound and fixed with the longitudinal and transverse section structure of the platform frame body 1.

Safety barrier 3 is equipped with along vertical direction on the horizontal frame at both ends around platform support body 1, and safety barrier 3 is made by the constant cross-section bar, with 1 mutually perpendicular of platform support body to welded fastening prevents that personnel or equipment from falling in the work progress.

The extending ends of two transverse frames of the platform frame body 1 are respectively connected with 4 sliding rollers 5 through 4 sliding connecting shafts A4, the sliding rollers 5 are ball bearings in the embodiment, other devices capable of rolling can be used in practical application, the treads of the sliding rollers 5 are positioned on the upper surface of the flange plate 6 of the I-shaped steel beam, the sliding connecting shafts A4 are machined from common carbon structural steel, the appearance of the sliding connecting shafts is similar to a bolted screw rod, the sliding connecting shafts are composed of a small-diameter polished rod 401 and a large-diameter top cap 402, the polished rod 401 is welded and fixed with the end parts of the transverse frames, the axis of the polished rod 401 is parallel to the transverse frames, the sliding rollers 5 are installed on the polished rod 401, and the outer sides of the sliding rollers are. The sliding roller 5 longitudinally moves along the upper surface of the flange plate 6 of the I-shaped steel beam so as to drive the whole construction platform to move back and forth, and after one working position is constructed, the sliding roller can be conveniently moved to the next working position to carry out the next section of construction, so that the complex procedures of disassembling and assembling a support and the like are omitted, a large amount of time is saved, and the production efficiency is greatly improved.

The bottom of the transverse frame on the inner sides of the 4 sliding rollers 5 is provided with 4 limiting rollers 7 respectively, the limiting rollers 7 in the embodiment are also ball bearings, various forms can be realized in practical application as long as the rolling function can be realized, the limiting rollers 7 are connected with the transverse frame through sliding connecting shafts B8, the sliding connecting shafts B8 and the sliding connecting shafts A4 are identical in structure and comprise small-diameter polished rods 801 and large-diameter top caps 802, the polished rods 801 of the sliding connecting shafts B and the bottom of the transverse frame are welded and fixed, the axes of the polished rods 801 are perpendicular to the transverse frame, the limiting rollers 7 are installed on the polished rods 801, the bottom of the limiting rollers 7 is limited through the top caps 802, the treads of the limiting rollers 7 are perpendicular to the upper surface of the flange plate 6 of the I-shaped steel beam and are located on the inner side wall of the flange plate 6 of the I-shaped steel beam, and the transverse distance between the limiting rollers 7 is. The limiting idler wheel 7 is used for controlling the direction of the construction platform when moving back and forth and preventing the construction platform from deviating, and the tread of the limiting idler wheel 7 is vertical to the upper surface of the I-shaped steel beam flange plate 6, so that the construction platform can be prevented from inclining and being blocked in the moving process,

the utility model discloses a novel I-shaped steel beam bridge displacement formula welding construction platform, simple structure, the cost is low, and it is extremely convenient to install, and each component can be flexibly assembled, is convenient for loading, unloading, depositing and transporting; the method can be used for welding construction of transverse connection structures between the I-shaped steel beams at the bridge positions, and can also be used for welding construction of webs and top plates at the bridge positions of the I-shaped steel beams, so that the safety of construction personnel is obviously improved, and the construction quality and the construction efficiency are improved.

The utility model discloses a practicality is strong, and construction cycle is short, and is little to operational environment space's requirement, does benefit to popularization and application. The sliding roller treads are positioned on the surfaces of the flange plates of the I-shaped steel beams, so that additional facilities such as supports, rails and the like are not needed, the sliding roller treads can be moved and adjusted according to construction positions in the construction process, the sliding roller treads can be moved and operated between two I-shaped steel beams during use, repeated disassembly and assembly are not needed, the working efficiency is improved, and the damage to a bridge body caused by repeated disassembly and assembly can be prevented.

Claims

1. The utility model provides a I-steel beam bridge displacement dynamic formula welding construction platform, includes the platform support body, its characterized in that: the platform frame body is of a rectangular frame structure, and a steel plate net is laid on the surface of the platform frame body; the bottom of the platform frame body is provided with more than 4 sliding rollers which are bilaterally symmetrical, the treads of the sliding rollers are positioned on the upper surfaces of the two I-shaped steel beam flange plates, and the platform frame body can longitudinally move along the upper planes of the I-shaped steel beam flange plates through the sliding rollers; the bottom of the construction platform is further provided with limiting idler wheels, the number of the limiting idler wheels is more than 4, the limiting idler wheels are arranged in a bilateral symmetry mode, the transverse distance between the limiting idler wheels corresponds to the width distance between the flange plates of the two I-shaped steel beams, and the treads of the limiting idler wheels are located on the inner side walls of the flange plates of the I-shaped steel beams and are perpendicular to the upper surfaces of the flange plates of the I-shaped steel beams.

2. The I-beam bridge displacement dynamic welding construction platform of claim 1, characterized in that: safety guardrails are arranged on the transverse frames at the front end and the rear end of the platform frame body along the vertical direction.

3. The I-beam bridge displacement dynamic welding construction platform of claim 1, characterized in that: the sliding idler wheels and the limiting idler wheels are connected with the platform frame body through sliding connecting shafts respectively.

4. The I-beam bridge displacement dynamic welding construction platform of claim 3, characterized in that: the sliding connecting shaft consists of a small-diameter polished rod and a large-diameter top cap.

5. The I-beam bridge displacement dynamic welding construction platform of claim 4, characterized in that: the sliding idler wheel and the limiting idler wheel are respectively arranged on a polished rod of the sliding connecting shaft, and the outer side of the polished rod is limited through the top cap.

6. The I-beam bridge displacement dynamic welding construction platform of claim 1, characterized in that: the platform frame body is composed of two transverse frames and three longitudinal frames.

7. The I-beam bridge displacement dynamic welding construction platform of claim 6, characterized in that: and the two transverse frames and the three longitudinal frames of the platform frame body are welded and fixed.

8. The I-beam bridge displacement dynamic welding construction platform of claim 1, characterized in that: the sliding roller and the limiting roller are ball bearings.

9. The I-beam bridge displacement dynamic welding construction platform of claim 1, characterized in that: and the rotating shaft of the limiting idler wheel is parallel to the upper surface of the flange plate of the I-shaped steel beam.