Adjustable bridge dividing belt gap bridge device

Abstract

The utility model relates to an adjustable bridge zoning gap bridge device which comprises two step ladders arranged in a splayed shape, a platform is connected between the upper ends of the two step ladders, and universal walking wheels are arranged at the lower ends of the two step ladders respectively. Each step ladder comprises two inclined supporting rods, a plurality of step ladder pedals are welded between the two inclined supporting rods at equal intervals, the platform comprises two longitudinal rods, a plurality of transverse rods are welded between the two longitudinal rods, and a platform panel is laid on the transverse rods; the upper ends of the two inclined supporting rods of each step ladder are hinged to the ends of the two longitudinal rods of the platform through rotating shafts respectively, oil cylinders are arranged between the middles of the two inclined supporting rods of each step ladder and the middles of the two longitudinal rods of the platform respectively, and the two ends of the oil cylinders are hinged to the inclined supporting rods of the step ladders and the longitudinal rods of the platform through rotating shafts respectively. The inclination angle of the two step ladders can be adjusted through stretching and retracting of the oil cylinders, so that the span of the whole device is adjusted, and the device can flexibly adapt to halving belts with different widths.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction and relates to an adjustable bridge center belt crossing device. Background Art

[0002] The central divider (center divider) of a bridge is the gap between two spans of the bridge. It is mainly to avoid the mutual influence of vibrations of different frequencies caused by opposite driving directions, and to prevent vibration from damaging or causing cracks in the connecting parts between the bridges, which helps to extend the life of the bridge. The width of the center divider is generally designed to be around 100 cm, but due to factors such as the bridge structure and the geological conditions under the bridge, the width of the center divider often ranges from 30 cm to 300 cm.

[0003] During the construction of the bridge deck system, construction workers need to frequently cross the median strip on the bridge. Usually, during construction, if the median strip is narrow, construction workers often cross it directly. If the median strip is wide, sometimes steel plates are set up between the two bridges as a temporary passage. Either way is dangerous.

[0004] Patent CN215164732U provides "a temporary passage between the left and right spans of a bridge", including two ladders arranged in an "eight" shape, a welded platform between the upper ends of the two ladders as a transverse passage, and walking wheels are provided at the lower ends of the two ladders. The device is placed across the center dividing strip between the two spans to provide a safe passage for construction workers to cross the bridge. However, the span of the device is fixed and cannot flexibly adapt to different widths of center dividing strips. If the span of the device is set according to the maximum width of the center dividing strip of the bridge, the device will occupy a larger bridge deck space at the narrower center dividing strip, which will affect the normal construction of the bridge deck. Therefore, the practicability of the device needs to be further improved. Summary of the invention

[0005] The utility model aims to solve the above problems and provides a bridge center belt crossing device with adjustable span.

[0006] The technical solution of the utility model is as follows:

[0007] An adjustable bridge center-dividing belt crossing device comprises two steps arranged in an "eight" shape, a platform is connected between the upper ends of the two steps, and universal walking wheels are respectively provided at the lower ends of the two steps, and the characteristics are as follows: each step comprises two oblique support rods, a plurality of step pedals are equidistantly welded between the two oblique support rods, and a walking wheel is respectively provided at the lower ends of the two oblique support rods; the platform comprises two longitudinal rods, a plurality of cross rods are welded between the two longitudinal rods, and platform panels are laid on the cross rods; the upper ends of the two oblique support rods of each step ladder are respectively hinged to the ends of the two longitudinal rods of the platform through a rotating shaft, and an oil cylinder is respectively provided between the middle parts of the two oblique support rods of each step ladder and the middle parts of the two longitudinal rods of the platform, and the two ends of the oil cylinder are respectively hinged to the oblique support rods of the step ladder and the longitudinal rods of the platform through a rotating shaft.

[0008] The utility model is based on the existing center-dividing belt bridge device, in which the upper ends of the two steps and the platform are arranged as a hinged structure, and oil cylinders are respectively arranged between the two steps and the platform as telescopic rods. The inclination angles of the two steps can be adjusted by telescoping the oil cylinders, thereby adjusting the span of the entire device, and can flexibly adapt to center-dividing belts of different widths, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the transverse bridge of the utility model viewed from the side;

[0010] Figure 2 It is a schematic structural diagram of the utility model viewed from the side along the bridge. DETAILED DESCRIPTION

[0011] like Figure 1 , Figure 2 As shown, the utility model comprises two step ladders arranged in an "eight" shape, a platform is connected between the upper ends of the two step ladders, and universal running wheels are respectively arranged at the lower ends of the two step ladders; each step ladder comprises two oblique support rods 1, a plurality of step ladder pedals 2 are equidistantly welded between the two oblique support rods 1, and a running wheel 3 is respectively arranged at the lower ends of the two oblique support rods; the platform comprises two longitudinal rods 4, a plurality of cross rods 5 are welded between the two longitudinal rods, and platform panels 6 are laid on the cross rods; the upper ends of the two oblique support rods 1 of each step ladder are respectively hinged to the ends of the two longitudinal rods 4 of the platform through a rotating shaft 7, and an oil cylinder 8 is respectively arranged between the middle parts 1 of the two oblique support rods of each step ladder and the middle parts of the two longitudinal rods 4 of the platform, and the two ends of the oil cylinder 8 are respectively hinged to the oblique support rods 1 of the step ladder and the longitudinal rods 4 of the platform through a rotating shaft.

[0012] In the above structure, the contraction of the oil cylinder can drive the upper end of the step ladder to rotate around the longitudinal beam of the platform, thereby changing the inclination of the step ladder. When each oil cylinder contracts, the lower ends of the two steps move inward, and the distance between the lower ends of the two steps is reduced; when each oil cylinder extends, the lower ends of the two steps move outward, and the distance between the lower ends of the two steps is expanded.

[0013] During the specific implementation of the utility model, in order to ensure the safety of construction workers, step rails 9 are respectively welded on the two oblique support rods 1 of the step ladder, and platform rails 10 are respectively welded on both sides of the platform.

[0014] When the utility model is implemented, the transverse length of the platform in the bridge direction can be set according to the minimum width of the zone in the construction bridge.

[0015] like Figure 1As shown, when the utility model is used, it spans over the center belt 11 of the two bridges and can push the device to move along the longitudinal direction of the bridge 12. After moving to the right position, the universal wheel is locked. When the center belt at the construction location is narrow, the inclination of the two steps is increased by synchronously controlling the contraction of each cylinder 8, so that the distance between the lower ends of the two steps is reduced to avoid occupying too much bridge deck space; when the center belt at the construction location is wide, the cylinder can be controlled to extend and the distance between the lower ends of the two steps is appropriately expanded to adapt to the width change of the center belt 11.

Claims

1. An adjustable bridge center belt crossing device, comprising two step ladders arranged in an "eight" shape, a platform connected between the upper ends of the two step ladders, and universal running wheels respectively arranged at the lower ends of the two step ladders, characterized in that: Each step ladder comprises two oblique support rods, between which a plurality of step ladder pedals are equidistantly welded, and a walking wheel is respectively arranged at the lower end of the two oblique support rods; the platform comprises two longitudinal rods, between which a plurality of transverse rods are welded, and platform panels are laid on the transverse rods; the upper ends of the two oblique support rods of each step ladder are respectively hinged to the ends of the two longitudinal rods of the platform through a rotating shaft, and an oil cylinder is respectively arranged between the middle parts of the two oblique support rods of each step ladder and the middle parts of the two longitudinal rods of the platform, and the two ends of the oil cylinder are respectively hinged to the oblique support rods of the step ladder and the longitudinal rods of the platform through a rotating shaft.

2. The adjustable bridge center belt crossing device according to claim 1 is characterized in that: The two oblique support rods of the step ladder are respectively welded with step ladder guardrails, and the two sides of the platform are respectively welded with platform guardrails.

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