Safety protective fence for highway bridge construction

Abstract

The utility model relates to the technical field of protective guards for bridge construction, and discloses a safety protective guard for highway bridge construction, which comprises a fixed column, an adjusting mechanism arranged above the fixed column, a supporting mechanism arranged above the fixed column, the adjusting mechanism comprising four protective guard bodies, the inner wall of each guardrail body is rotationally connected with the outer surface of the fixing column, the inner wall of each guardrail body is slidably connected with an extension plate, and the upper surface of each extension plate is fixedly connected with a supporting frame. According to the safety protective fence for expressway bridge construction, under the action of a hand-cranking screw, when a worker rotates the hand-cranking screw, the hand-cranking screw can rotate in a supporting frame and a limiting plate and gradually ascend in the rotating process, the hand-cranking screw ascends to drive the limiting plate to ascend, and therefore the safety protective fence is convenient to use. And therefore, the length of the guardrail body can be conveniently adjusted, and connection and use between devices are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction guardrails, in particular to a safety guardrail used in highway bridge construction. Background Art

[0002] Bridge construction guardrails refer to temporary safety facilities installed around the bridge construction area to ensure the safety of construction workers and passing pedestrians and vehicles during the construction of the bridge. They are usually made of strong and durable materials such as metal, plastic or reinforced concrete, and are designed and installed in accordance with relevant safety regulations. The main function of bridge construction guardrails is to prevent people and objects from falling, as well as to guide traffic and ensure safety and order at the construction site.

[0003] The existing utility model with authorization announcement number CN217975716U discloses a safety guardrail for highway bridge construction, including a base, a support sleeve fixedly connected to the top surface of the base, a threaded hole penetrating the front of the support sleeve, a threaded knob threadedly connected to the inner wall of the threaded hole, a first right guardrail hingedly installed on the right side of the support sleeve through a first hinged seat, a first left guardrail hingedly installed on the left side of the support sleeve through the first hinged seat, and a movable column slidably connected to the inner wall of the support sleeve.

[0004] By adopting the above technical solution, when loading and transportation are required, the second right guardrail and the second left guardrail are placed in the placement groove, the movable column is placed in the support sleeve, and then the first right guardrail and the first left guardrail are folded up; the goal of facilitating the transportation of safety guardrails for highway bridge construction is achieved, and the traditional highway bridge construction mostly adopts piers and steel pipes for protection, which makes transportation time-consuming and labor-intensive. However, in the above technical solution, when the device is in use, since the length of the guardrail is relatively fixed, when the distance between the two guardrails is large, it is easy for the length to be insufficient and unable to be connected. At the same time, when the device is connected and protected only by two guardrails, the guardrail as a whole is prone to poor stability, which leads to poor practicality.

[0005] Therefore, those skilled in the art provide a safety guardrail for highway bridge construction to solve the problems raised in the above background technology. Utility Model Content

[0006] The purpose of the utility model is to provide a safety guardrail for highway bridge construction to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A safety guardrail for highway bridge construction, comprising a fixed column, an adjustment mechanism provided above the fixed column, and a support mechanism provided above the fixed column;

[0009] The adjustment mechanism includes four guardrail bodies, the inner wall of each guardrail body is rotatably connected to the outer surface of the fixed column, the inner wall of each guardrail body is slidably connected to an extension plate, the upper surface of each extension plate is fixedly connected to a support frame, the inner wall of each support frame is threadedly connected to a hand screw, the bottom end of each hand screw is rotatably connected to a limit plate, the outer surface of each limit plate is slidably connected to the inner wall of the guardrail body, and the outer surface of each limit plate is slidably connected to the inner wall of the support frame;

[0010] The support mechanism includes four rotating columns, the outer surface of each rotating column is rotatably connected to the inner wall of the fixed column, the outer surface of each rotating column is fixedly connected to two support rods, the inner wall of each group of support rods is slidably connected to a support pin, and the outer surface of each support pin is slidably connected to the inner wall of the extension plate.

[0011] As a further solution of the present invention: the bottom surface of the fixing column is fixedly connected to a base, and the inner wall of the base is threadedly connected to four bolts.

[0012] As a further solution of the present invention: two reinforcement blocks are fixedly connected to the upper surface of the base, and the side surfaces of the two reinforcement blocks close to each other are fixedly connected to the front and back surfaces of the fixing columns respectively.

[0013] As a further solution of the present invention: the inner wall of the fixed column is rotatably connected to two bidirectional threaded rods, and one end of each bidirectional threaded rod away from the fixed column is fixedly connected to a rotating block.

[0014] As a further solution of the present invention: the outer surface of each of the bidirectional threaded rods is threadedly connected to two movable plates, and the outer surface of each of the movable plates is slidably connected to the inner wall of the fixed column.

[0015] As a further solution of the present invention: both side surfaces of each movable plate are fixedly connected with clamping blocks, and the right side surfaces of the two extension plates are fixedly connected with connecting frames.

[0016] As a further solution of the present invention: the outer surface of each supporting pin is threadedly connected with a nut, and the front side of each nut is in contact with the back side of the supporting rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model is provided with a guardrail body, an extension plate, a support frame, a hand-cranked screw and a limit plate, so that when the staff rotates the hand-cranked screw under the action of the hand-cranked screw, the hand-cranked screw can rotate inside the support frame and the limit plate, and gradually rises during the rotation process. The rising hand-cranked screw can drive the limit plate to rise until it can be moved to the outside of the guardrail body, thereby facilitating the adjustment of the length of the guardrail body and facilitating the connection and use between devices. By providing a rotating column, a support rod and a support pin, the rotating column and the support rod can be easily adjusted to a suitable support angle, and the support pin can support the guardrail body and the support rod in series, thereby achieving the purpose of reinforcing the support of the guardrail body and further improving the stability of the guardrail body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a safety guardrail used in highway bridge construction;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of a fixed column used in a safety guardrail for highway bridge construction;

[0021] Figure 3 This is a schematic diagram of a right-side sectional three-dimensional structure of a fixed column used in a safety guardrail for highway bridge construction;

[0022] Figure 4 The diagram is a schematic cross-sectional three-dimensional structure diagram of a guardrail body used in a safety guardrail for highway bridge construction.

[0023] In the figure: 1. Fixed column; 2. Adjustment mechanism; 201. Guardrail body; 202. Extension plate; 203. Support frame; 204. Hand screw; 205. Limit plate; 3. Support mechanism; 301. Rotating column; 302. Support rod; 303. Support pin; 4. Base; 5. Bolt; 6. Reinforcement block; 7. Connecting frame; 8. Bidirectional threaded rod; 9. Rotating block; 10. Moving plate; 11. Clamping block; 12. Nut. DETAILED DESCRIPTION

[0024] See also Figure 1-4 A safety guardrail for highway bridge construction includes a fixed column 1, an adjustment mechanism 2 is provided above the fixed column 1, and a support mechanism 3 is provided above the fixed column 1;

[0025] The adjustment mechanism 2 includes four guardrail bodies 201, the inner wall of each guardrail body 201 is rotatably connected to the outer surface of the fixed column 1, the bottom surface of the fixed column 1 is fixedly connected to the base 4, and the inner wall of the base 4 is threadedly connected to four bolts 5. By setting the base 4 and the bolts 5, the bottom of the device can be firmly fixed to avoid position displacement during use.

[0026] The inner wall of each guardrail body 201 is slidably connected to an extension plate 202, the upper surface of each extension plate 202 is fixedly connected to a support frame 203, the inner wall of each support frame 203 is threadedly connected to a hand-cranked screw 204, and the upper surface of the base 4 is fixedly connected to two reinforcement blocks 6, and the side surfaces of the two reinforcement blocks 6 close to each other are respectively fixedly connected to the front and back surfaces of the fixed column 1. By providing the reinforcement blocks 6, the connection effect between the base 4 and the fixed column 1 can be further increased, so that the connection can be more firmly performed.

[0027] The bottom end of each hand-cranked screw 204 is rotatably connected to the limit plate 205, and the outer surface of each limit plate 205 is slidably connected to the inner wall of the guardrail body 201. The outer surface of each limit plate 205 is slidably connected to the inner wall of the support frame 203. The inner wall of the fixed column 1 is rotatably connected to two bidirectional threaded rods 8, and each bidirectional threaded rod 8 is fixedly connected to a rotating block 9 at one end away from the fixed column 1. By setting the bidirectional threaded rod 8 and the rotating block 9, it is convenient to drive the movable plate 10 inside the fixed column 1 to move, thereby facilitating the fixation of the folded guardrail body 201.

[0028] The supporting mechanism 3 includes four rotating columns 301, the outer surface of each rotating column 301 is rotatably connected to the inner wall of the fixed column 1, the outer surface of each bidirectional threaded rod 8 is threadedly connected to two movable plates 10, and the outer surface of each movable plate 10 is slidably connected to the inner wall of the fixed column 1. By setting the movable plate 10, a platform for fixing and supporting during clamping can be provided, so that it can quickly drive the clamping block 11 to move.

[0029] The outer surface of each rotating column 301 is fixedly connected to two support rods 302, and the two side surfaces of each movable plate 10 are fixedly connected to the clamping blocks 11, wherein the right sides of the two extension plates 202 are fixedly connected to the connecting frames 7. By setting the clamping blocks 11 and the connecting frames 7, the clamping blocks 11 can conveniently clamp and fix the folded guardrail body 201 to avoid automatic movement during transportation. At the same time, the connecting frame 7 can conveniently connect and fix multiple devices.

[0030] The inner wall of each group of support rods 302 is slidably connected with a support pin 303, the outer surface of each support pin 303 is slidably connected to the inner wall of the extension plate 202, and the outer surface of each support pin 303 is threadedly connected with a nut 12, and the front of each nut 12 is in contact with the back of the support rod 302. By providing the nut 12, the firmness of the support pin 303 can be further increased to avoid falling off during use.

[0031] The working principle of the present invention is as follows: when in use, the staff first transports the device to a suitable installation position, and then the staff fixes it firmly through the base 4 and the bolts 5 on the base 4 to avoid position deviation during use. Then, when the staff needs to connect the guardrail bodies 201 of multiple devices, the staff manually rotates the hand screw 204. When the staff manually rotates the hand screw 204, the hand screw 204 can rotate inside the support frame 203 and the limit plate 205, and gradually rises during the rotation. The rise of the hand screw 204 can drive the limit plate 205 to rise until it can move to the outside of the guardrail body 201, thereby releasing the guardrail. The limiting effect of the internal extension plate 202 of the guardrail body 201 can pull out the internal extension plate 202, and finally connect it in series with other extension plates 202 through the connecting frame 7 and fix it. When the staff needs to reinforce the support of the guardrail body 201, the staff manually rotates the support rod 302 and the rotating column 301 so that the support rod 302 can be rotated to a suitable angle, and then the support rod 302 and the guardrail body 201 are connected in series through the support pin 303 for support, and finally reinforced by the nut 12 to avoid falling off during use, thereby further reinforcing the overall firmness of the guardrail body 201 and making it more secure for use.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A safety guardrail for highway bridge construction, comprising a fixed column (1), characterized in that: An adjustment mechanism (2) is provided above the fixed column (1), and a support mechanism (3) is provided above the fixed column (1); The adjustment mechanism (2) comprises four guardrail bodies (201), the inner wall of each guardrail body (201) is rotatably connected to the outer surface of the fixed column (1), the inner wall of each guardrail body (201) is slidably connected to an extension plate (202), the upper surface of each extension plate (202) is fixedly connected to a support frame (203), the inner wall of each support frame (203) is threadedly connected to a hand-cranked screw rod (204), the bottom end of each hand-cranked screw rod (204) is rotatably connected to a limit plate (205), the outer surface of each limit plate (205) is slidably connected to the inner wall of the guardrail body (201), and the outer surface of each limit plate (205) is slidably connected to the inner wall of the support frame (203); The support mechanism (3) comprises four rotating columns (301), the outer surface of each rotating column (301) is rotatably connected to the inner wall of the fixed column (1), the outer surface of each rotating column (301) is fixedly connected to two support rods (302), the inner wall of each group of support rods (302) is slidably connected to a support pin (303), and the outer surface of each support pin (303) is slidably connected to the inner wall of the extension plate (202).

2. A safety guardrail for highway bridge construction according to claim 1, characterized in that: The bottom surface of the fixing column (1) is fixedly connected to a base (4), and the inner wall of the base (4) is threadedly connected to four bolts (5).

3. The safety guardrail for highway bridge construction according to claim 2, characterized in that: Two reinforcement blocks (6) are fixedly connected to the upper surface of the base (4), and the side surfaces of the two reinforcement blocks (6) close to each other are fixedly connected to the front and back surfaces of the fixing column (1) respectively.

4. The safety guardrail for highway bridge construction according to claim 1, characterized in that: Two bidirectional threaded rods (8) are rotatably connected to the inner wall of the fixed column (1), and one end of each bidirectional threaded rod (8) away from the fixed column (1) is fixedly connected to a rotating block (9).

5. The safety guardrail for highway bridge construction according to claim 4, characterized in that: The outer surface of each bidirectional threaded rod (8) is threadedly connected to two movable plates (10), and the outer surface of each movable plate (10) is slidably connected to the inner wall of the fixed column (1).

6. The safety guardrail for highway bridge construction according to claim 5, characterized in that: Both side surfaces of each movable plate (10) are fixedly connected to clamping blocks (11), and the right side surfaces of the two extension plates (202) are fixedly connected to connecting frames (7).

7. The safety guardrail for highway bridge construction according to claim 1, characterized in that: The outer surface of each support pin (303) is threadedly connected to a nut (12), and the front surface of each nut (12) is in contact with the back surface of the support rod (302).

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