Bridge concrete guardrail formwork trolley

Abstract

The utility model relates to a bridge concrete guardrail template trolley which comprises a frame, guardrail inner templates and guardrail outer templates, the frame is provided with a plurality of upper cross beams, the upper cross beams extend towards one side of the frame to form cantilevers, the guardrail templates are hung on the cantilevers of the upper cross beams, each upper cross beam comprises two pieces of I-shaped steel which are arranged in parallel, and a certain gap is formed between the two pieces of I-shaped steel. Hanging rods corresponding to the upper cross beams in number and position are vertically welded to the outer walls of the inner formwork and the outer formwork respectively, and the upper end of each hanging rod penetrates to the position above the corresponding upper cross beam from a gap between the two I-beams of the corresponding upper cross beam; counter-force beams are welded to the upper ends of the suspenders at the two ends of the inner formwork and the outer formwork respectively, formwork lifting oil cylinders are arranged between the counter-force beams and the upper cross beam and located on the inner sides of the suspenders, counter-force bases are welded to the top face of the upper cross beam and located on the outer sides of the suspenders provided with the counter-force beams, and formwork transverse moving oil cylinders are arranged between the counter-force bases and the suspenders. When the formwork is used for concrete guardrail construction, the procedures of formwork and pull rod installation, formwork removal and the like can be carried out on a bridge, and the safety of constructors can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, relates to the pouring construction of bridge concrete guardrail, and specifically relates to a bridge concrete guardrail template trolley. Background Art

[0002] Concrete guardrails are usually installed on both sides of the bridge to ensure the safety of vehicles on the bridge. When pouring concrete guardrails, the inner formwork can be supported on the bridge deck, while the outer formwork is suspended in the air, which makes installation and positioning more difficult. The traditional method is to set up a cantilever bracket on the bridge deck, or use a crane to suspend the outer formwork and cooperate with manual installation and positioning on the outer side of the bridge, which is prone to high-altitude falling accidents and is highly dangerous.

[0003] Patent CN217078430U discloses a large straight bridge wall guardrail template trolley, the upper crossbeam of the trolley is provided with a cantilever end extending outside the bridge, the cantilever end of the upper crossbeam is provided with a pulley that can slide on the upper crossbeam, and a fall chain is arranged below the pulley to suspend the inner and outer templates. The plane position of the template is adjusted by moving the pulley on the upper crossbeam, and the height of the template is adjusted by the fall chain. The above device can realize the positioning of the inner and outer templates during installation on the bridge, while the installation of the tie rod between the inner and outer templates and the demoulding of the outer template still require construction personnel to operate outside the bridge. Therefore, the above trolley is also suspended with a working hanging basket on the crossbeam cantilever, but the construction personnel still have certain risks in the process of getting on and off the hanging basket and suspended operation, and the fall chain of the suspended template is a flexible structure, the template will shake in the air, and the stability is not easy to control. Summary of the invention

[0004] The purpose of the utility model is to provide a bridge concrete guardrail template trolley which can automatically install and disassemble the template in order to solve the above problems, and further improve the safety and construction efficiency of the concrete guardrail construction.

[0005] The technical solution of the utility model is as follows:

[0006] A bridge concrete guardrail formwork trolley comprises a vehicle frame and an inner and outer formwork of the guardrail, the vehicle frame comprises four columns arranged at the four vertices of a rectangle, a lower longitudinal beam is welded between the lower ends of every two columns in the longitudinal direction of the bridge, an upper longitudinal beam is welded between the upper ends of every two columns, a plurality of lower cross beams are welded equidistantly between the two lower longitudinal beams in the transverse direction of the bridge, a plurality of upper cross beams are welded equidistantly between the two upper longitudinal beams, a traveling wheel is respectively arranged at the lower ends of the four columns, each upper cross beam extends a cantilever of a certain length to one side of the vehicle frame, the inner and outer formwork are suspended on the cantilever of the upper cross beam, and is characterized in that: each upper cross beam comprises two I-beams arranged in parallel, with a certain gap between the two I-beams; and hangers corresponding to the number and position of the upper cross beams are respectively welded vertically on the outer walls of the inner and outer formworks. Rod, the upper end of each hanger passes through the gap between two I-beams of an upper crossbeam to the top of the upper crossbeam; a reaction beam is welded to the upper end of the hangers at both ends of the inner formwork and the outer formwork respectively; on the inner side of the hanger of each welded reaction beam, a template lifting cylinder is vertically arranged between the upper crossbeam and the reaction beam, the bottom of the template lifting cylinder is fixed to the top surface of the upper crossbeam, and the upper end is supported on the bottom surface of the reaction beam; on the outer side of the hanger of each welded reaction beam, a reaction seat is welded on the top surface of the upper crossbeam, a template transverse movement cylinder is transversely arranged between each reaction seat and the hanger, the rear end of the template transverse movement cylinder is welded to the reaction seat, and the front end is welded to the outer side of the hanger; a plurality of pairs of tie rod through holes are respectively provided on the outer formwork and the inner formwork, and a tie rod fixing nut that passes through the tie rod through hole is welded at each tie rod through hole on the outer wall of the outer formwork and the inner formwork.

[0007] The utility model adjusts the plane position and height of the template by means of the horizontal oil cylinder and the vertical oil cylinder. The upper crossbeam can guide and limit the movement of the template, thereby preventing the template from shaking in the air. The template positioning, tie rod installation, template removal and other processes can be carried out on the bridge, thereby realizing automated construction. There is no need for construction workers to work in the air outside the bridge, and the safety of construction workers can be fully guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the transverse bridge elevation structure of the utility model;

[0009] Figure 2 It is a schematic diagram of the vertical structure of the transverse bridge in the mold closing state of the utility model;

[0010] Figure 3 It is a side view along the bridge direction along one side of the hanging template of the utility model. DETAILED DESCRIPTION

[0011] like Figure 1 , Figure 2As shown, the bridge concrete guardrail formwork trolley of the utility model comprises a vehicle frame and a guardrail inner formwork and an outer formwork, the vehicle frame comprises 4 columns 1 arranged according to the four vertices of a rectangle, a lower longitudinal beam 2 is welded between the lower ends of every two columns along the bridge direction, an upper longitudinal beam 3 is welded between the upper ends of every two columns, a plurality of lower cross beams 4 are welded equidistantly between the two lower longitudinal beams in the transverse direction of the bridge, a plurality of upper cross beams 5 are welded equidistantly between the two upper longitudinal beams, a walking wheel 6 is respectively provided at the lower ends of the four columns, each upper cross beam 5 extends a cantilever of a certain length to one side of the vehicle frame, and the inner formwork 7 and the outer formwork 8 are suspended on the cantilever of the upper cross beam 5;

[0012] like Figure 3 As shown, each upper cross beam 5 includes two I-beams arranged in parallel, with a certain gap between the two I-beams; hangers 9 corresponding to the number and position of the upper cross beams are vertically welded on the outer walls of the inner template 7 and the outer template 8, and the upper end of each hanger 9 passes through the gap between the two I-beams of an upper cross beam 5 to the top of the upper cross beam;

[0013] A reaction beam 10 is welded to the upper end of the hanger 9 at both ends of the inner formwork 7 and the outer formwork 8 respectively; on the inner side of the hanger of each welded reaction beam, a template lifting cylinder 11 is vertically arranged between the upper cross beam 5 and the reaction beam 10, the bottom of the template lifting cylinder 11 is fixed to the top surface of the upper cross beam 5, and the upper end is supported on the bottom surface of the reaction beam 10; on the outer side of the hanger of each welded reaction beam, a reaction seat 12 is welded to the top surface of the upper cross beam 5, and a template transverse movement cylinder 13 is transversely arranged between each reaction seat 12 and the hanger 9, the rear end of the template transverse movement cylinder 13 is welded to the reaction seat 12, and the front end is welded to the outer side of the hanger 9; a plurality of pairs of tie rod through holes are respectively provided on the outer formwork and the inner formwork, and a tie rod fixing nut 14 that penetrates the tie rod through hole is welded at each tie rod through hole on the outer wall of the outer formwork 8 and the inner formwork 7.

[0014] During the specific implementation of the utility model, in order to ensure the stability of the trolley, a counterweight 15 is provided on the lower cross beam 4 of the trolley, and a cylinder control system 16 is provided for controlling each template lifting cylinder and template transverse movement cylinder.

[0015] The working process of the utility model is as follows:

[0016] like Figure 1 As shown, the template lifting cylinder 11 is extended and retracted to lift the inner template 7 to a point where the lower end is higher than the top surface of the bridge 19, and the outer template 8 is lowered to a point where the lower end is lower than the bottom surface of the bridge 19, and the trolley carrying the inner and outer templates is pushed to move along the longitudinal direction of the bridge to the guardrail construction position;

[0017] like Figure 2As shown, the template transverse cylinder 13 is used to push the inner and outer templates to move relative to each other to achieve the pouring spacing of the guardrail concrete, and then the template lifting cylinder 11 is used to lower the inner template 7 to the lower end to support it on the bridge deck, and the outer template 8 is lifted to the bottom baffle to contact the bottom surface of the bridge. The template is installed in place, and the tie rod through holes between the inner and outer templates are penetrated. The construction personnel penetrate the tie rod 17 between the inner and outer templates on the bridge deck, and rotate the tie rod 17 so that its two ends are respectively screwed with the tie rod fixing nuts 14 on the inner and outer templates to fix the inner and outer templates; pour the concrete guardrail 18;

[0018] like Figure 1 As shown, after the concrete guardrail 18 reaches the demoulding strength, the tie rod is removed, and the inner and outer templates are moved in opposite directions by contracting the transverse cylinders to complete the demoulding; then the inner template is lifted again and the outer template is lowered, and the trolley is pushed to move to the construction position of the next section of the guardrail.

Claims

1. A bridge concrete guardrail formwork trolley, comprising a frame and a guardrail inner formwork and an outer formwork, the frame comprising 4 columns arranged at the four vertices of a rectangle, a lower longitudinal beam is welded between the lower ends of every two columns along the bridge direction, an upper longitudinal beam is welded between the upper ends of every two columns, a plurality of lower cross beams are welded equidistantly between the two lower longitudinal beams in the transverse direction of the bridge, a plurality of upper cross beams are welded equidistantly between the two upper longitudinal beams, a travelling wheel is respectively arranged at the lower ends of the four columns, each upper cross beam extends a cantilever of a certain length to one side of the frame, the inner formwork and the outer formwork are suspended on the cantilever of the upper cross beam, and the characteristics are: Each upper crossbeam includes two I-beams arranged in parallel, with a certain gap between the two I-beams; hangers corresponding to the number and position of the upper crossbeams are vertically welded on the outer walls of the inner formwork and the outer formwork, and the upper end of each hanger passes through the gap between the two I-beams of an upper crossbeam to the top of the upper crossbeam; a reaction beam is welded to the upper ends of the hangers at both ends of the inner formwork and the outer formwork; on the inner side of the hanger of each welded reaction beam, a template lifting cylinder is vertically arranged between the upper crossbeam and the reaction beam, the bottom of the template lifting cylinder is fixed to the top surface of the upper crossbeam, and the upper end is supported on the bottom surface of the reaction beam; on the outer side of the hanger of each welded reaction beam, a reaction seat is welded on the top surface of the upper crossbeam, and a template transverse movement cylinder is transversely arranged between each reaction seat and the hanger, the rear end of the template transverse movement cylinder is welded to the reaction seat, and the front end is welded to the outer side of the hanger; a plurality of pairs of tie rod through holes are respectively provided on the outer formwork and the inner formwork, and a tie rod fixing nut that passes through the tie rod through hole is welded at each tie rod through hole on the outer walls of the outer formwork and the inner formwork.

2. The bridge concrete guardrail formwork trolley according to claim 1 is characterized in that: The lower cross beam of the trolley is equipped with a counterweight and a cylinder control system.

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