High-altitude falling object collision prevention device for bridge pier column

Abstract

A high-altitude falling object collision prevention device for a bridge pier column comprises the pier column, a pre-buried sleeve piece is pre-buried on the pier column, a foundation block is detachably connected to the pre-buried sleeve piece, an extension rod is rotationally connected to the upper portion of the foundation block, a telescopic rod is rotationally connected to the lower portion of the foundation block, the front end of the telescopic rod is hinged to the side wall of the extension rod, and a protective net assembly is laid on the extension rod. The protective net assembly comprises a vertical protective net, an inclined protective net and a flat protective net. When the telescopic end slides in the fixed end, the length of the telescopic end is changed, the inclination angle of the extension rod can be further selected according to the requirement of the protection projection area, the higher the upward inclination angle is, the more difficult the falling objects fall off outwards after the falling objects are intercepted, and conflicts can be avoided due to the different inclination angles of adjacent pier columns. The layered protection effect is achieved; the foundation block, the extension rod, the telescopic end and the second threaded column are all detachably connected and are assembled during installation, and after bridge construction is completed, the components can be sequentially dismantled and turned over.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge safety protection, and more specifically, particularly relates to a high-altitude falling object impact prevention device for bridge piers. Background Art

[0002] During bridge construction, the piers are cast first, and then the box girder is erected on the piers. When subsequent construction such as the road surface is carried out on the box girder, falling objects will fall from great altitudes, posing a great safety hazard to the bridge being hit.

[0003] The existing protection method is to place fences or protective nets on the bridge deck. When construction is carried out at the edge, the protective devices are in the way and affect the construction. They need to be moved many times, which is relatively cumbersome. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the utility model aims to provide a high-altitude falling object impact prevention device for bridge piers, which can intercept high-altitude falling objects on the bridge piers to prevent them from being hit under the bridge.

[0005] A device for preventing falling objects from impacting a bridge pier comprises a pier, wherein a pre-embedded kit is pre-embedded on the pier, a foundation block is detachably connected to the pre-embedded kit, an extension rod is rotatably connected to the upper portion of the foundation block, a telescopic rod is rotatably connected to the lower portion of the foundation block, a front end of the telescopic rod is hinged to the side wall of the extension rod, a protective net assembly is laid on the extension rod, and the protective net assembly comprises a vertical protective net, an inclined protective net and a flat protective net.

[0006] Furthermore, the embedded kit includes an upper steel plate and a lower steel plate, and the upper steel plate and the lower steel plate are arranged in a circular array on the side wall of the pier, and there is a vertical spacing between the upper steel plate and the lower steel plate.

[0007] Furthermore, right-angle hooks are welded on the upper steel plate and the lower steel plate.

[0008] Furthermore, connection holes are provided at the top of the basic block and the bottom of the basic block, and the right-angle hook passes through the connection holes.

[0009] Furthermore, the middle portion of the basic block protrudes outward, an upper connecting groove and a lower connecting groove are provided in the middle portion of the basic block, and a connecting shaft is provided in the upper connecting groove and the lower connecting groove.

[0010] Furthermore, the connecting shaft in the upper connecting groove is rotatably connected to a first threaded column, and the rear end of the extension rod is threadedly connected to the first threaded column.

[0011] Furthermore, the telescopic rod includes a fixed end and a telescopic end, the rear end of the fixed end is rotatably connected to the lower connecting groove, the telescopic end is slidably connected to the inside of the fixed end, and the front end of the telescopic end is hinged to the connecting block on the extension rod.

[0012] Furthermore, a plurality of inner positioning holes are formed at equal intervals on the telescopic end, an outer positioning hole is formed on the top of the fixed end, and the inner positioning hole and the outer positioning hole are connected by a U-shaped buckle after being overlapped.

[0013] Furthermore, a first hook block is provided at the front end of the extension rod, a second threaded column is screwed on the first hook block, a second hook block is provided on the top of the second threaded column, and the vertical protective net is hung on the first hook block and the second hook block.

[0014] Furthermore, a third hook block is provided on the upper steel plate, a fourth hook block is provided at the rear of the extension rod, a fifth hook block is provided at the front of the extension rod, the fifth hook block is located behind the first hook block, the oblique protective net is hung on the third hook block and the fourth hook block, and the flat protective net is hung on the fourth hook block and the fifth hook block.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] ① When the telescopic end slides inside the fixed end, the length of the telescopic end changes, further causing the extension rod to tilt at an angle. Different tilt angles can be selected according to the requirements of the protection projection area. The higher the upward tilt angle, the less likely it is for the falling objects to slide outward after being intercepted. Adjacent piers can also avoid conflicts by tilting at different angles, thereby achieving a layered protection effect.

[0017] ② The foundation block, extension rod, telescopic end and second threaded column are all detachably connected and are assembled during installation. After the bridge construction is completed, the above components can be dismantled in turn for turnover, saving resources and reducing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 The present invention is a schematic diagram of the overall structure of a device for preventing high altitude falling objects from impacting a bridge pier.

[0020] Figure 2 The present invention is a schematic diagram of a single device in a device for preventing falling objects from impacting a bridge pier.

[0021] Figure 3 The present invention is a schematic diagram of a foundation block in a device for preventing falling objects from impacting a bridge pier.

[0022] Figure 4 The present invention is a schematic diagram of an extension rod in a device for preventing falling objects from impacting a bridge pier.

[0023] Figure 5 The present invention is a schematic diagram of a telescopic rod of a device for preventing falling objects from impacting a bridge pier.

[0024] In the figure: 1. pier column; 2. embedded kit; 21. upper steel plate; 211. third hook block; 22. lower steel plate; 23. right-angle hook; 3. foundation block; 31. connecting hole; 32. upper connecting groove; 321. first threaded column; 33. lower connecting groove; 34. connecting shaft; 4. extension rod; 41. connecting block; 42. first hook block; 43. fourth hook block; 44. fifth hook block; 5. telescopic rod; 51. fixed end; 52. telescopic end; 521. inner positioning hole; 53. U-shaped buckle; 6. second threaded column; 61. second hook block; 7. protective net assembly; 71. vertical protective net; 72. inclined protective net; 73. flat protective net. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1 , 2 As shown, a device for preventing falling objects from impacting a bridge pier comprises a pier 1, a pre-embedded kit 2 is pre-embedded on the pier 1, a foundation block 3 is detachably connected to the pre-embedded kit 2, an extension rod 4 is rotatably connected to the upper portion of the foundation block 3, a telescopic rod 5 is rotatably connected to the lower portion of the foundation block 3, the front end of the telescopic rod 5 is hinged to the side wall of the extension rod 4, a protective net assembly 7 is laid on the extension rod 4, and the protective net assembly 7 comprises a vertical protective net 71, an inclined protective net 72 and a horizontal protective net 73.

[0027] The embedded kit 2 includes an upper steel plate 21 and a lower steel plate 22. The upper steel plate 21 and the lower steel plate 22 are embedded in the side wall of the pier 1 before pouring the concrete of the pier 1. After the formwork is removed, the outer surfaces of the upper steel plate 21 and the lower steel plate 22 are exposed to the side wall of the pier 1. The upper steel plate 21 and the lower steel plate 22 are arranged in a circular array on the side wall of the pier 1. There is a vertical spacing between the upper steel plate 21 and the lower steel plate 22, and the upper steel plate 21 is located above the lower steel plate 22.

[0028] After the mold is removed, right-angle hooks 23 are welded on the upper steel plate 21 and the lower steel plate 22, and the hook heads of the right-angle hooks 23 face upward.

[0029] like Figure 3As shown, connecting holes 31 are provided at the top and the bottom of the foundation block 3, and the distance between the two connecting holes 31 is the same as the distance between the two right-angle hooks 23. The right-angle hooks 23 pass through the connecting holes 31. Under the action of gravity, the right-angle hooks 23 support the side walls of the connecting holes 31, so that the foundation block 3 is further supported by the right-angle hooks 23, and the hook heads of the right-angle hooks 23 face upward to prevent the foundation block 3 from detaching from the right-angle hooks 23 after tilting.

[0030] The middle part of the base block 3 protrudes outward, and is thicker than the upper and lower ends to have a greater bearing capacity. An upper connecting groove 32 and a lower connecting groove 33 are opened in the middle part of the base block 3, and a connecting shaft 34 is fixed in the upper connecting groove 32 and the lower connecting groove 33.

[0031] The connecting shaft 34 in the upper connecting groove 32 is rotatably connected to the first threaded column 321. The rear end of the first threaded column 321 is a ring, which is sleeved on the connecting shaft 34. The ring rotates relative to the connecting shaft 34. The front end of the first threaded column 321 is a threaded rod. The rear end of the extension rod 4 is screwed to the first threaded column 321. The extension rod 4 is connected in a detachable manner for easy storage and turnover.

[0032] like Figure 4 As shown, the telescopic rod 5 supports the extension rod so that the extension rod can be tilted at different angles to facilitate intercepting the impact of falling objects from a high altitude. The telescopic rod 5 includes a fixed end 51 and a telescopic end 52. The rear end of the fixed end 51 is rotatably connected to the lower connecting groove 33, and the telescopic end 52 is slidably connected to the inside of the fixed end 51. The front end of the telescopic end 52 is hinged to the connecting block 41 on the extension rod 4 through a detachable pin shaft, and the telescopic end 52 can rotate relative to the connecting block 41.

[0033] A number of inner positioning holes 521 are provided at equal intervals on the telescopic end 52, and an outer positioning hole is provided on the top of the fixed end 51. When the telescopic end 52 slides in the fixed end 51, the length of the telescopic end 52 changes, further making the extension rod 4 tilted at an angle. Different tilt angles can be selected according to the requirements of the protection projection area. The higher the upward tilt angle, the less likely it is for the falling objects to slide outward after being intercepted. Adjacent piers 1 can be tilted at different angles to avoid conflict, thereby achieving a layered protection effect. When the length of the telescopic end 52 is selected, an inner positioning hole 521 coincides with the outer positioning hole, and then they are connected by a U-shaped buckle 53. The U-shaped buckle 53 fixes the relative lengths of the telescopic end 52 and the fixed end 51, so that the extension rod maintains the tilt angle.

[0034] like Figure 5As shown, a first hook block 42 is provided at the front end of the extension rod 4, a second threaded column 6 is screwed on the first hook block 42, the bottom of the second threaded column 6 is screwed to the first hook block 42, the second threaded column 6 is vertically arranged, and a second hook block 61 is provided on the top of the second threaded column 6. A vertical protective net 71 is hung on the first hook block 42 and the second hook block 61. The vertical protective net 71 surrounds the outer side of the extension rod 4 to reduce the probability of intercepted falling objects from high altitude sliding from the outer side.

[0035] A third hook block 211 is provided on the upper steel plate 21, and a fourth hook block 43 is provided at the rear of the extension rod 4. An oblique protective net 72 is hung on the third hook block 211 and the fourth hook block 43. The oblique protective net 72 covers the fourth hook block 43 and the side wall of the pier 1 to prevent falling objects from high altitude from sliding down the side wall of the pier 1.

[0036] A fifth hook block 44 is provided at the front of the extension rod 4, and the fifth hook block 44 is located behind the first hook block 42. A flat protective net 73 is hung on the fourth hook block 43 and the fifth hook block 44. The flat protective net 73 has the same inclination angle as the extension rod 4. The flat protective net 73 intercepts a large number of falling objects from high altitude on the bridge to prevent falling objects from hitting equipment or construction personnel under the bridge, thereby ensuring safety under the bridge.

[0037] The vertical protection net 71, the oblique protection net 72 and the horizontal protection net 73 are made of dense mesh, and iron rings are arranged around them. When installing, the iron rings are hung on the hook blocks.

[0038] During installation, the foundation block 3, the extension rod, the telescopic end 52 and the second threaded column 6 are all detachably connected and assembled during installation. After the bridge construction is completed, the above-mentioned components can be dismantled in turn for turnover, saving resources and reducing waste.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for preventing falling objects from hitting a bridge pier, comprising a pier (1), characterized in that: The pier column (1) is pre-embedded with an embedded kit (2), the embedded kit (2) is detachably connected to a foundation block (3), the upper part of the foundation block (3) is rotatably connected to an extension rod (4), the lower part of the foundation block (3) is rotatably connected to a telescopic rod (5), the front end of the telescopic rod (5) is hinged to the side wall of the extension rod (4), and a protective net assembly (7) is laid on the extension rod (4), and the protective net assembly (7) comprises a vertical protective net (71), an inclined protective net (72) and a horizontal protective net (73).

2. The device for preventing falling objects from hitting a bridge pier according to claim 1 is characterized in that: The embedded kit (2) comprises an upper steel plate (21) and a lower steel plate (22), wherein the upper steel plate (21) and the lower steel plate (22) are arranged in a circular array on the side wall of the pier (1), and there is a vertical spacing between the upper steel plate (21) and the lower steel plate (22).

3. The device for preventing falling objects from hitting a bridge pier according to claim 2 is characterized in that: Right-angle hooks (23) are welded on the upper steel plate (21) and the lower steel plate (22).

4. The device for preventing falling objects from hitting a bridge pier according to claim 3 is characterized in that: The top of the basic block (3) and the bottom of the basic block (3) are provided with connection holes (31), and the right-angle hook (23) passes through the connection holes (31).

5. The device for preventing falling objects from hitting a bridge pier according to claim 4 is characterized in that: The middle part of the basic block (3) protrudes outwards, and an upper connecting groove (32) and a lower connecting groove (33) are provided in the middle part of the basic block (3), and a connecting shaft (34) is provided in the upper connecting groove (32) and the lower connecting groove (33).

6. The device for preventing falling objects from hitting a bridge pier according to claim 5, characterized in that: The connecting shaft (34) in the upper connecting groove (32) is rotatably connected to a first threaded column (321), and the rear end of the extension rod (4) is threadedly connected to the first threaded column (321).

7. The device for preventing falling objects from hitting a bridge pier according to claim 6 is characterized in that: The telescopic rod (5) comprises a fixed end (51) and a telescopic end (52); the rear end of the fixed end (51) is rotatably connected to the lower connecting groove (33); the telescopic end (52) is slidably connected to the inside of the fixed end (51); and the front end of the telescopic end (52) is hinged to a connecting block (41) on the extension rod (4).

8. The device for preventing falling objects from hitting a bridge pier according to claim 7, characterized in that: A plurality of inner positioning holes (521) are formed at equal intervals on the telescopic end (52), an outer positioning hole is formed on the top of the fixed end (51), and the inner positioning hole (521) and the outer positioning hole are connected by a U-shaped buckle (53) after being overlapped.

9. The device for preventing falling objects from hitting a bridge pier according to claim 8, characterized in that: A first hook block (42) is provided at the front end of the extension rod (4), a second threaded column (6) is screwed onto the first hook block (42), a second hook block (61) is provided at the top of the second threaded column (6), and the vertical protective net (71) is hung on the first hook block (42) and the second hook block (61).

10. The device for preventing falling objects from hitting a bridge pier according to claim 9, characterized in that: A third hook block (211) is provided on the upper steel plate (21), a fourth hook block (43) is provided at the rear of the extension rod (4), a fifth hook block (44) is provided at the front of the extension rod (4), the fifth hook block (44) is located behind the first hook block (42), the oblique protective net (72) is hung on the third hook block (211) and the fourth hook block (43), and the flat protective net (73) is hung on the fourth hook block (43) and the fifth hook block (44).

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