Operation protection device for prefabricated concrete stair installation

Abstract

The utility model discloses an operation protection device for mounting precast concrete stairs, which comprises a horizontal support frame, a protection fence fixedly mounted above the horizontal support frame and lateral limiting rods fixedly mounted at two ends of the front side of the horizontal support frame, and a support plate is arranged above the horizontal support frame; an overturn-preventing rod is rotatably arranged on the lateral limiting rod, when the horizontal supporting frame is installed on the stepped beam, the lateral limiting rod is located on the outer side of the stepped beam, and the overturn-preventing rod is arranged at the bottom of the stepped beam. The device can provide a stable operation platform and protective support for operators, is convenient to disassemble and hoist, improves the construction efficiency, and is good in overall installation stability, safe, reliable and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment for installing building prefabricated stairs, in particular to an operating protection device for installing prefabricated concrete stairs. Background Art

[0002] In the construction of football stadiums, a large number of stairs need to be set up. Traditional stairs are usually cast as a whole. This method is better for one-piece molding, but it requires on-site support formwork, which has relatively low construction efficiency and high construction costs. At present, the structure used in the construction of stairs in some large stadiums is cast-in-place step beams + prefabricated plain concrete step slabs. During construction, an 8-ton spider is used to hoist the prefabricated plain concrete step slabs. During the hoisting process, the two sides and top edges of the stairs need to be protected. The side protection uses 48 steel pipes to be erected on the step beam as a whole. The top edge protection needs to be adjusted as the installation progresses. The protection position needs to be adjusted every time a step tread is installed. It needs to be repeatedly erected and dismantled, which reduces construction efficiency and increases construction costs. Utility Model Content

[0003] The utility model aims to provide an operating protection device for the installation of precast concrete stairs, which can provide an operator with a stable operating platform and protection support, is easy to disassemble and hoist, improves construction efficiency, has good overall installation stability, is safe and reliable, and has strong practicality.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An operating protection device for installing precast concrete stairs comprises a horizontal support frame, a protection fence fixedly installed above the horizontal support frame and lateral limit rods fixedly installed at both ends of the front side of the horizontal support frame, wherein a support plate is arranged above the horizontal support frame; an anti-overturning rod is rotatably arranged on the lateral limit rod, and when the horizontal support frame is installed on a step beam, the lateral limit rod is arranged on the outside of the step beam, and the anti-overturning rod is arranged at the bottom of the step beam.

[0006] Preferably, the protective fence includes two vertical support rods fixedly mounted on both sides of the horizontal support frame and a plurality of transverse protective rods fixedly mounted on the two vertical support rods, and the operator's protective rope is mounted on the transverse protective rods.

[0007] Preferably, the two vertical support rods are both located on the inner side of the step beam.

[0008] Preferably, the anti-rollover rod is L-shaped, and the vertical end of the anti-rollover rod is rotatably disposed in the lateral limiting rod.

[0009] Preferably, an external thread is provided on the vertical end of the anti-rollover rod, an adjusting nut is provided on the external thread, the adjusting nut is located above the lateral limiting rod, and the anti-rollover rod can be fixed to the lateral limiting rod by the adjusting nut.

[0010] In the utility model, the horizontal support frame, protective fence and lateral limit rod are overall in a "chair shape", stable in installation and highly safe. The horizontal part is used as an operating platform for operators to perform installation operations. The protective fence not only plays a role in the safety protection of the end, but also provides a hanging point for the operator's safety rope. The vertical support rod and lateral limit rod can limit the device laterally, with good installation stability and can also prevent side tilting. The anti-rollover rod can connect the device to the bottom limit of the step beam to prevent the device from tipping backwards. When it is necessary to hoist and change the position, it only needs to adjust the anti-rollover rod for rapid hoisting. It has high disassembly and assembly efficiency, high overall installation stability and good operation safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is an enlarged schematic diagram of the local structure of the utility model;

[0013] In the figure: 1. horizontal support frame; 2. protective fence; 3. lateral limit rod; 4. support plate; 5. step beam; 6. anti-overturning rod; 7. adjusting nut; 20. vertical support rod; 21. horizontal protective rod. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings:

[0015] like Figure 1 and Figure 2 An operating protection device for the installation of precast concrete stairs is shown, comprising a horizontal support frame 1, a protection fence 2 fixedly installed above the horizontal support frame 1, and lateral limit rods 3 fixedly installed at both ends of the front side of the horizontal support frame 1. A support plate 4 is fixedly arranged above the horizontal support frame 1 by fasteners, and an operator performs installation work on the support plate 4. The width of the support plate 4 is greater than the width of a precast plain concrete step plate. The horizontal support frame 1 is formed by splicing together multiple round steel pipes fixedly connected by multiple steel pipe fasteners.

[0016] The protective fence 2 includes two vertical support rods 20 fixedly mounted on both sides of the horizontal support frame 1 and a plurality of transverse protection rods 21 fixedly mounted on the two vertical support rods 20, and the operator's protection rope is installed on the transverse protection rods 21 through a hanging ring. Both vertical support rods 20 are located on the inner side of the step beam 5.

[0017] An anti-rollover rod 6 is rotatably provided on the lateral limit rod 3. When the horizontal support frame 1 is installed above the step beam 5, the lateral limit rod 3 is arranged outside the step beam 5, and the anti-rollover rod 6 is arranged at the bottom of the step beam 5 to prevent the device from tipping over backwards. The anti-rollover rod 6 is L-shaped as a whole, and the vertical end of the anti-rollover rod 6 is rotatably provided in the lateral limit rod 3. The lateral limit rod 3 is a round steel pipe, and the vertical end of the anti-rollover rod 6 is a round rod that matches the inner diameter of the round steel pipe. An external thread is provided on the vertical end of the anti-rollover rod 6, and an adjusting nut 7 is provided on the external thread. The adjusting nut 7 is located above the lateral limit rod 3. The anti-rollover rod 6 can be fixed to the lateral limit rod 3 by adjusting the nut 7. At this time, the horizontal end of the anti-rollover rod 6 is located at the bottom of the step beam 5 to achieve an anti-rollover effect. When hoisting is required, rotate the adjusting nut 7 in the opposite direction to separate the horizontal end of the anti-overturning rod 6 from the bottom of the step beam 5, rotate the vertical end of the anti-overturning rod 6, and then hoist and move the position of the device. Repeat the operation until the entire staircase is installed.

[0018] The above embodiments are only some descriptions of the concept and implementation of the utility model, and are not intended to limit the concept and implementation of the utility model. Under the concept of the utility model, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. An operating protection device for installing precast concrete stairs, characterized in that: The invention comprises a horizontal support frame (1), a protective fence (2) fixedly mounted above the horizontal support frame (1), and lateral limit rods (3) fixedly mounted at both ends of the front side of the horizontal support frame (1); a support plate (4) is arranged above the horizontal support frame (1); an anti-rollover rod (6) is rotatably arranged on the lateral limit rod (3); when the horizontal support frame (1) is mounted on a step beam (5), the lateral limit rod (3) is arranged on the outside of the step beam (5), and the anti-rollover rod (6) is arranged at the bottom of the step beam (5).

2. The operating protection device for installing precast concrete stairs according to claim 1 is characterized in that: The protective fence (2) comprises two vertical support rods (20) fixedly mounted on both sides of the horizontal support frame (1) and a plurality of transverse protective rods (21) fixedly mounted on the two vertical support rods (20), and the operator's protective rope is mounted on the transverse protective rods (21).

3. The operating protection device for installing precast concrete stairs according to claim 2 is characterized in that: The two vertical support rods (20) are both located on the inner side of the step beam (5).

4. The operating protection device for installing precast concrete stairs according to claim 1 or 3, characterized in that: The anti-rollover rod (6) is L-shaped, and the vertical end of the anti-rollover rod (6) is rotatably arranged in the lateral limiting rod (3).

5. The operating protection device for installing precast concrete stairs according to claim 4 is characterized in that: An external thread is provided on the vertical end of the anti-rollover rod (6), and an adjusting nut (7) is provided on the external thread. The adjusting nut (7) is located above the lateral limiting rod (3), and the anti-rollover rod (6) can be fixed to the lateral limiting rod (3) by means of the adjusting nut (7).

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