Radian-variable fabricated guardrail for arch back of arch bridge

Abstract

The utility model relates to the technical field of bridge floor guardrail installation, in particular to a radian-variable assembly type guardrail for an arch bridge back, which comprises a supporting component and a rod body arranged at the upper end of the supporting component, the supporting component comprises a supporting plate and a plurality of positioning plates, and a plurality of positioning grooves are arranged on the periphery of the supporting plate. A positioning groove is formed in the supporting plate, the positioning plate is rotatably arranged in the positioning groove, a groove is formed in the positioning plate, an adjusting piece used for adjusting the angle of the positioning plate is rotatably connected in the groove, one end of the adjusting piece penetrates through the supporting plate, and an anchor rod used for being connected with a bridge body is arranged at the lower end of the supporting assembly. The angle of the positioning plate can be adjusted, the angle of the positioning plate is adjusted, the positioning plate is attached to the curved surface, the whole supporting assembly is attached to the shape of the bridge floor, casting in advance is not needed, only the angle of the supporting assembly needs to be adjusted during installation, the construction time is greatly shortened, and meanwhile the construction cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge deck guardrail installation technical field, especially in an arc change assembly type guardrail for arch bridge arch back. BACKGROUND

[0002] The arch bridge is one kind of bridge system, the shape of arch can effectively disperse the load exerted on the bridge, make it into compression force, enhance the stability of bridge, the bridge deck both sides of arch bridge need to be installed guardrail to ensure the safety of personnel on the bridge deck, the existing guardrail is casted according to the shape of arch back, in this mode, it needs to cast more size guardrail, and the worker needs to find the installation position of each guardrail first, then installs different guardrails at different positions, the whole process not only needs to consume a lot of time, but also is prone to problems in the process of installation, resulting in the loss of protection of guardrail. SUMMARY

[0003] In view of the technical problems in the background art, the utility model aims at providing an arc change assembly type guardrail for arch bridge arch back, which can adjust the angle of the guardrail according to different arc, so that the guardrail can be more stably supported on the bridge deck.

[0004] To achieve the above object, the utility model provides the technical scheme as follows:

[0005] An arc change assembly type guardrail for arch bridge arch back, comprising a support assembly and a rod body arranged at the upper end of the support assembly, the support assembly comprises a support plate and a plurality of positioning plates, a plurality of positioning grooves are arranged around the support plate, the positioning plates are rotatably arranged in the positioning grooves, a recess is arranged on the positioning plate, an adjusting piece for adjusting the angle of the positioning plate is rotatably connected in the recess, one end of the adjusting piece penetrates through the support plate, and an anchor rod for connecting with the bridge body is arranged at the lower end of the support assembly.

[0006] Preferably, the driving piece comprises a sleeve, one end of the sleeve is rotatably connected in the recess.

[0007] Preferably, an adjusting hole is arranged through the support plate, the adjusting hole is arranged at the position of the positioning plate, the adjusting piece further comprises an adjusting rod, and the adjusting rod is connected with the sleeve through the adjusting hole.

[0008] Preferably, a limiting structure for limiting the sliding of the adjusting rod and the sleeve is arranged between the adjusting rod and the sleeve, the limiting structure comprises a clamping plate arranged on the adjusting rod and a clamping groove arranged in the sleeve, and the clamping plate is connected in the clamping groove.

[0009] Preferably, a plurality of connecting holes for supporting the rope are arranged on the rod body.

[0010] As preferred, both ends of the connecting hole are slidably provided with a clamping assembly for clamping the rope.

[0011] As preferred, both sides of the clamping assembly are provided with connecting plates, which are connected with the rod body through bolts.

[0012] The utility model has the advantages and beneficial effects that:

[0013] In the utility model, the supporting plate is supported on the bridge deck, the angle of the positioning plate is adjustable, the angle of the positioning plate is adjusted, the positioning plate is attached to the curved surface, the shape of the supporting assembly is attached to the bridge deck, the supporting assembly does not need to be cast in advance, and only the angle of the supporting assembly needs to be adjusted during installation, so that the construction time is greatly reduced, and the construction cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A three-dimensional view of the assembly type guardrail with variable curvature for the arch back of the arch bridge is provided.

[0015] Figure 2 A front view of the assembly type guardrail with variable curvature for the arch back of the arch bridge is provided.

[0016] Figure 3 A sectional view of the supporting assembly of the assembly type guardrail with variable curvature for the arch back of the arch bridge is provided.

[0017] Figure 4 A partial enlarged view of Figure 3 .

[0018] Figure 5 An exploded view of the clamping assembly of the assembly type guardrail with variable curvature for the arch back of the arch bridge is provided.

[0019] The drawings show that: 1 is a rod body, 101 is a connecting hole, 102 is a sliding groove, 103 is a threaded groove, 2 is a supporting plate, 21 is a positioning groove, 22 is an adjusting hole, 3 is a positioning plate, 31 is a groove, 32 is a connecting shaft, 4 is a sleeve, 41 is a clamping plate, 5 is an adjusting rod, 51 is a clamping groove, 6 is a clamping plate I, 601 is a sliding block, 602 is a connecting plate, 603 is a threaded hole, 61 is a clamping plate II, and 7 is an anchor rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] Example

[0023] like Figures 1-5 As shown, a prefabricated guardrail with varying arc on the arch back of an arch bridge includes a support assembly and a rod 1 set on the upper end of the support assembly. The support assembly includes a support plate 2 and several positioning plates 3. The support plate 2 is flat and has several positioning grooves 21 around its perimeter. The positioning grooves 21 are located at the lower part of the support plate 2. The positioning plates 3 are rotatably set in the positioning grooves 21. The positioning plates 3 are connected to the positioning grooves 21 and can extend from the lower part of the positioning grooves 21, making the support assembly arc-shaped. The lower end of the positioning plate 3 is provided with an anchor rod 7 for connecting with the bridge body. The anchor rod 7 is cast together with the bridge deck, so that the entire guardrail is stably connected to the bridge deck.

[0024] like Figure 1 , 3As shown in Figure 4, the positioning plate 3 has a groove 31, and the side wall of the groove 31 has a sliding groove 311. An adjusting component for adjusting the angle of the positioning plate 3 is slidably connected in the sliding groove 311. One end of the adjusting component passes through the support plate 2. The adjusting component includes a sleeve 4 and an adjusting rod 5. The sleeve 4 has a T-shaped structure. A connecting shaft 32 is slidably arranged in the sliding groove 311. The connecting shaft 32 is fixed on both sides of the sleeve 4, and the connecting shaft 32 can also rotate in the sliding groove 311. An adjusting hole 22 is provided through the support plate 2. The adjusting hole 22 is located at the position of the positioning plate 3. The adjusting rod 5 is connected in the adjusting hole 22, and the lower end of the adjusting rod 5 passes through the adjusting hole 22 and is connected to the sleeve 4. A limiting structure is provided between the adjusting rod 5 and the sleeve 4 to limit their sliding. The limiting structure includes a slot 51 provided on the adjusting rod 5 and a slot 51 provided on the sleeve 5. The upper end of the sleeve 4 extends into the adjusting rod 5, connecting the clamping plate 41 to the slot 51. The adjusting rod 5 can rotate at the upper end of the sleeve 4 without disengaging from it. The adjusting hole 22 has internal threads, and the adjusting rod 5 has a threaded section that mates with the adjusting hole 22. Rotating the adjusting rod 5 causes it to move towards the lower end of the support plate 2. During this movement, the adjusting rod 5 drives the sleeve 4 downward. The sleeve 4 and the connecting shaft 32 slide along the direction of the slide groove 311. The sleeve 4 causes the positioning plate 3 to change its angle, and the support plate 2 is supported on the bridge deck. The angle of the positioning plate 3 is adjustable. Adjusting the angle of the positioning plate 3 allows it to fit snugly against the curved surface. The entire support assembly fits the shape of the bridge deck without the need for pre-casting. During installation, only the angle of the support assembly needs to be adjusted, greatly reducing construction time and costs.

[0025] like Figure 1 , 2 As described in section 5, the rod body 1 is provided with a plurality of connecting holes 101 for supporting ropes. Clamping assemblies for clamping the ropes are slidably provided at both ends of the connecting holes 101. The clamping assemblies include clamping plates I 6 and II 61 respectively provided at both ends of the connecting holes 101. One end of clamping plate I 6 is arc-shaped, and one end of clamping plate II 61 is arc-shaped. A cross-shaped sliding groove 102 is provided on the rod body 1, located at the upper and lower ends of the connecting holes 101. A slider 601 is provided on clamping plates I 6 and II 61. Connected within the slide groove 102, clamping plates I6 and II61 can slide along the direction of the slide groove 102. Connecting plates 602 are provided on both sides of clamping plates I6 and II61. Threaded grooves 103 are provided on the rod body 1, and threaded holes 603 are provided on the connecting plates 602. When the rope passes through the connecting hole 101, clamping plates I6 and II61 slide, clamping the rope. At this time, the threaded grooves 103 and threaded holes 603 are aligned. Bolts are screwed in to fix clamping plates I6 and II61 to the surface of the rod body 1, so that the rope on the guardrail maintains tension.

[0026] The above merely is preferred embodiment of the present utility model, and does not for limiting the present utility model, for the person skilled in the art, the present utility model can have various changes and changes, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the present utility model, should include in the protection scope of the present utility model.

Claims

1. An arc changing assembly type guardrail for the arch back of an arch bridge, characterized by, The utility model provides a support assembly and a rod body arranged on the upper end of the support assembly, the support assembly comprises a support plate and a plurality of positioning plates, a plurality of positioning grooves are arranged around the support plate, the positioning plates are rotatably arranged in the positioning grooves, recesses are arranged on the positioning plates, the side wall of the recess is provided with a sliding groove, an adjusting part for adjusting the angle of the positioning plate is slidably connected in the sliding groove, one end of the adjusting part penetrates through the support plate, and the lower end of the support assembly is provided with an anchor rod for connecting with a bridge body.

2. The arc change assembly type guardrail for the arch back of an arch bridge according to claim 1, characterized in that, A connecting shaft is slidably arranged in the sliding groove, and the adjusting part comprises a sleeve, and the connecting shaft is fixed on both sides of the sleeve.

3. The arc change assembly type guardrail for the arch back of an arch bridge according to claim 2, characterized in that, An adjusting hole is arranged through the support plate, and the adjusting hole is arranged at the position of the positioning plate, the adjusting part further comprises an adjusting rod, and the adjusting rod is rotatably connected through the adjusting hole and the sleeve.

4. The arc change assembly type guardrail for the arch back of an arch bridge according to claim 3, characterized in that, Limiting structures for limiting the sliding of the adjusting rod and the sleeve are arranged between the adjusting rod and the sleeve, the limiting structures comprise a clamping groove arranged on the adjusting rod and a clamping plate arranged on the sleeve, and the clamping plate is connected in the clamping groove.

5. The arc length variable assembly type guardrail for the arch back of an arch bridge according to claim 1, wherein A plurality of connecting holes for supporting a rope are arranged on the rod body.

6. The arc length variable assembly type guardrail for the arch back of an arch bridge according to claim 5, characterized in that, Clamping assemblies for clamping the rope are slidably arranged at both ends of the connecting hole.

7. The arc length variable assembly type guardrail for the arch back of an arch bridge according to claim 6, characterized in that, Connecting plates are arranged on both sides of the clamping assembly, and the connecting plates and the rod body are connected through bolts.

8. The arc length variable assembly type guardrail for the arch back of an arch bridge according to claim 3, characterized in that, The adjusting hole has an internal thread, and a threaded section matched with the adjusting hole is arranged on the adjusting rod.

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