Prefabricated combined steel structure pedestrian overpass

Abstract

The utility model relates to a prefabricated combined steel structure pedestrian overpass which comprises a pedestrian overpass body, a set of adjusting assemblies are symmetrically arranged on the two sides of the pedestrian overpass body, a set of auxiliary mechanisms are symmetrically arranged at the bottom of the pedestrian overpass body, and the pedestrian overpass body is connected with the adjusting assemblies through a plurality of limiting bolts. The pedestrian overpass body comprises a pedestrian transverse plate, a set of transverse handrails are arranged on the upper surface of the pedestrian transverse plate in a front-back symmetry mode, a set of positioning blocks are symmetrically and fixedly arranged at the front end and the rear end of each of the two sides of the pedestrian transverse plate, the positioning blocks are sleeved with inclined supports, and inclined handrails are fixedly connected to the tops of the inclined supports. According to the combined pedestrian overpass, an integrally-formed pedestrian overpass is changed into the combined pedestrian overpass body, the pedestrian overpass body can be rapidly assembled and disassembled, meanwhile, when parts in the pedestrian overpass body are locally damaged, the locally damaged parts can be independently replaced, and the replacement cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of steel structure pedestrian bridge technology, and in particular to a prefabricated combined steel structure pedestrian bridge. Background Technology

[0002] Pedestrian overpasses, also known as pedestrian grade-separated bridges, are bridge facilities specifically designed for pedestrians. They are typically built in areas with high traffic volume and dense pedestrian flow, such as intersections, squares, and railways. Their main function is to avoid conflicts when vehicular and pedestrian traffic intersect at the same level, ensuring pedestrian safety when crossing the road, while also improving vehicle speed and reducing traffic accidents. Currently, there are two structural types of pedestrian overpasses: reinforced concrete structures and ordinary steel frame structures.

[0003] Most existing steel structure pedestrian bridges use welding technology to form a single piece, which makes disassembly inconvenient and difficult to reuse after disassembly, resulting in economic losses. At the same time, it is difficult to replace damaged parts individually, increasing replacement costs. In view of this, we propose a prefabricated combined steel structure pedestrian bridge. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a prefabricated combined steel structure pedestrian bridge. This solves the technical problems that most existing steel structure pedestrian bridges use welding technology to form the pedestrian bridge as a whole, which makes the disassembly of the steel structure pedestrian bridge inconvenient and difficult to reuse after disassembly, resulting in certain economic losses. At the same time, it is difficult to replace locally damaged parts individually, which increases the replacement cost.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a prefabricated combined steel structure pedestrian bridge is designed, including a pedestrian bridge body, a set of adjustment components are symmetrically arranged on both sides of the pedestrian bridge body, a set of auxiliary mechanisms are symmetrically arranged at the bottom of the pedestrian bridge body, and the pedestrian bridge body and the adjustment components are connected by a number of limiting bolts.

[0006] The pedestrian overpass body includes a pedestrian crossboard. A set of horizontal railings is symmetrically arranged on the front and back of the upper surface of the crossboard. A set of positioning blocks is symmetrically fixed at the front and back ends of both sides of the crossboard. An inclined bracket is sleeved on the outside of the positioning block. An inclined railing is fixed to the top of the inclined bracket. Several limiting grooves are evenly opened inside the inclined bracket. The limiting blocks are engaged inside the limiting grooves. A step is fixed between the symmetrically arranged limiting blocks. A set of locking grooves is symmetrically opened on the left and right sides of the bottom of the crossboard. An auxiliary groove is opened at the middle of the bottom of the step.

[0007] Preferably, the positioning block and the limiting block have the same thickness, and the pedal forms an engaging structure with the limiting block and the limiting groove.

[0008] Preferably, the adjustment assembly includes a fixed slot frame, with a set of positioning bolts inserted into the front and rear sides of the fixed slot frame. A positive and negative lead screw is mounted inside the fixed slot frame, and a motor is connected to the end of the positive and negative lead screw. A protective box is fitted around the motor. A set of movable frames is symmetrically fitted on the surface of the positive and negative lead screw. A set of sliding grooves is symmetrically opened on one side surface of the fixed slot frame.

[0009] Preferably, the bottom of the tilting bracket is fitted into the interior of the movable frame, and the tilting bracket and the movable frame are connected by limiting bolts to form a detachable structure.

[0010] Preferably, the positive and negative lead screws are threadedly connected to the movable frame, the movable frame is generally cross-shaped, and when the movable frame slides in the slide groove, the side wings of the movable frame always fit against one side of the slide groove.

[0011] Preferably, the auxiliary mechanism includes an auxiliary upright plate, which is vertically engaged inside the slot. An extension frame is fixedly connected to the bottom of the auxiliary upright plate, and a support rod is fixedly connected to the inner side of the extension frame. The support rod and the auxiliary upright plate are fixedly connected by an inclined plate, and several L-shaped auxiliary frames are evenly distributed on the surface of the inclined plate.

[0012] Preferably, the number of pedals and L-shaped auxiliary frames is the same, and the L-shaped auxiliary frames form an engaging structure with the pedals through auxiliary slots.

[0013] Preferably, the side of the extension frame away from the auxiliary upright plate is in contact with the bottom surface of the inclined support.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model changes the one-piece molded pedestrian overpass into a modular pedestrian overpass body, which facilitates the rapid assembly and disassembly of the pedestrian overpass body. At the same time, when a component in the pedestrian overpass body is partially damaged, the damaged component can be replaced individually, reducing replacement costs.

[0016] 2. This utility model effectively drives the forward and reverse rotation of the lead screws via a motor, thereby causing a set of movable frames on the surface of the lead screws to move away from or closer to each other. When the movable frames slide, the side wings of the movable frames can always prevent foreign objects and dust from entering the interior of the fixed slot frame, reducing the possibility of damage to the lead screws. When the set of movable frames is closest to each other, the positioning block and the limiting block engage inside the inclined bracket, completing the rapid assembly of the pedestrian overpass body. When the set of movable frames is farthest from each other, the positioning block and the limiting block disengage from the inclined bracket. At this time, the pedestrian overpass body can be quickly disassembled, and the components in the pedestrian overpass body can be partially replaced as needed.

[0017] 3. In this utility model, the auxiliary upright plate and the L-shaped auxiliary frame can respectively provide auxiliary support for the pedestrian cross plate and the tread, so as to avoid the pedestrian cross plate and the tread having no force points and collapsing when the pedestrian bridge body is disassembled, thereby reducing safety hazards. The right trapezoidal combination of the auxiliary upright plate, the extension frame, the support rod and the inclined plate improves the placement stability of the pedestrian bridge body. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial cross-sectional view of the adjustment component of this utility model;

[0020] Figure 3 This is a partial structural diagram of the pedestrian overpass body of this utility model;

[0021] Figure 4 This is a schematic diagram of the partial disassembly structure of the pedestrian overpass from another perspective of this utility model;

[0022] Figure 5 This is a schematic diagram of a partial explosion structure of the present invention;

[0023] In the diagram: 1. Pedestrian bridge body; 2. Adjustment components; 3. Auxiliary mechanisms; 4. Limit bolts;

[0024] 101. Pedestrian walkway; 102. Horizontal railing; 103. Positioning block; 104. Inclined bracket; 105. Angled railing; 106. Limiting groove; 107. Limiting block; 108. Pedal; 109. Card slot; 110. Auxiliary groove;

[0025] 201. Fixed slot frame; 202. Positioning bolt; 203. Positive and negative lead screws; 204. Motor; 205. Protective box; 206. Movable frame; 207. Slide rail;

[0026] 301. Auxiliary upright plate; 302. Extension frame; 303. Support rod; 304. Inclined plate; 305. L-shaped auxiliary frame. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] A prefabricated composite steel structure pedestrian bridge, see [link / reference] Figures 1 to 5 The system includes a pedestrian overpass body 1, a set of adjustment components 2 symmetrically arranged on both sides of the pedestrian overpass body 1, a set of auxiliary mechanisms 3 symmetrically arranged at the bottom of the pedestrian overpass body 1, and the pedestrian overpass body 1 and the adjustment components 2 are connected by several limiting bolts 4.

[0029] The pedestrian overpass body 1 includes a pedestrian crossbeam 101. A set of horizontal railings 102 are symmetrically arranged on the upper surface of the pedestrian crossbeam 101. A set of positioning blocks 103 are symmetrically fixed on both the front and rear ends of the pedestrian crossbeam 101. An inclined bracket 104 is sleeved on the outside of the positioning block 103. An inclined railing 105 is fixedly connected to the top of the inclined bracket 104. Several limiting grooves 106 are evenly opened inside the inclined bracket 104. Limiting blocks 107 are engaged inside the limiting grooves 106. A step 108 is fixed between the symmetrically arranged limiting blocks 107. The positioning blocks 103 and the limiting blocks 107 have the same thickness. The step 108 forms an engaging structure with the limiting blocks 107 and the limiting grooves 106. A set of slots 109 are symmetrically opened on the left and right sides of the bottom of the pedestrian crossbeam 101. An auxiliary groove 110 is opened at the middle of the bottom of the step 108. This utility model changes the one-piece molded pedestrian overpass into a modular pedestrian overpass body 1, which facilitates the quick assembly and disassembly of the pedestrian overpass body 1. At the same time, when a component in the pedestrian overpass body 1 is partially damaged, the damaged component can be replaced individually, reducing replacement costs.

[0030] It is worth noting that the adjustment component 2 includes a fixed slot frame 201. A set of positioning bolts 202 are inserted into the front and rear sides of the fixed slot frame 201. A positive and negative lead screw 203 is mounted inside the fixed slot frame 201. A motor 204 is connected to the end of the positive and negative lead screw 203. A protective box 205 is fitted around the motor 204. A set of movable frames 206 are symmetrically mounted on the surface of the positive and negative lead screw 203. The bottom of the tilting bracket 104 is matched and engaged inside the movable frame 206. The tilting bracket 104 and the movable frame 206 form a detachable structure through the limiting bolt 4. A set of sliding grooves 207 are symmetrically opened on one side surface of the fixed slot frame 201. Furthermore, the positive and negative lead screw 203 and the movable frame 206 are threadedly connected. The movable frame 206 is roughly cross-shaped. When the movable frame 206 slides in the sliding groove 207, the side wings of the movable frame 206 always fit against one side of the sliding groove 207. This invention effectively drives the forward and reverse rotation of the lead screw 203 via the motor 204, thereby causing a set of movable frames 206 on the surface of the lead screw 203 to move away from or closer to each other. When the movable frames 206 slide, the side wings of the movable frames 206 can always prevent foreign objects and dust from entering the fixed slot frame 201, reducing the possibility of damage to the lead screw 203. When the set of movable frames 206 are closest to each other, the positioning block 103 and the limiting block 107 engage inside the inclined bracket 104, completing the rapid assembly of the pedestrian overpass body 1. When the set of movable frames 206 are farthest apart, the positioning block 103 and the limiting block 107 disengage from the inclined bracket 104, at which point the pedestrian overpass body 1 can be quickly disassembled, and the components in the pedestrian overpass body 1 can be partially replaced as needed.

[0031] It is worth noting that the auxiliary mechanism 3 includes an auxiliary upright plate 301, which is vertically engaged inside the slot 109. An extension frame 302 is fixedly connected to the bottom of the auxiliary upright plate 301. The side of the extension frame 302 away from the auxiliary upright plate 301 is in contact with the bottom surface of the inclined bracket 104. A support rod 303 is fixedly connected to the inner side of the extension frame 302. The support rod 303 and the auxiliary upright plate 301 are fixedly connected by an inclined plate 304. Several L-shaped auxiliary frames 305 are evenly distributed on the surface of the inclined plate 304. Furthermore, the number of pedals 108 is the same as the number of L-shaped auxiliary frames 305. The L-shaped auxiliary frames 305 form an engaging structure with the pedals 108 through the auxiliary slot 110. In this utility model, the auxiliary upright plate 301 and the L-shaped auxiliary frame 305 can respectively provide auxiliary support for the pedestrian cross plate 101 and the step plate 108, so as to prevent the pedestrian cross plate 101 and the step plate 108 from collapsing due to lack of force points when the pedestrian overpass body 1 is disassembled, thereby reducing safety hazards. The right-angled trapezoidal assembly formed by the auxiliary upright plate 301, the extension frame 302, the support rod 303 and the inclined plate 304 improves the placement stability of the pedestrian overpass body 1.

[0032] Working principle: The motor 204 drives the forward and reverse lead screws 203 to rotate in both directions, thereby causing a set of movable frames 206 on the surface of the lead screws 203 to move away from or closer to each other. When the movable frames 206 slide, their side wings can prevent foreign objects and dust from entering the fixed slot frame 201, reducing the possibility of damage to the lead screws 203. When the set of movable frames 206 are closest to each other, the positioning block 103 and the limiting block 107 engage inside the inclined bracket 104, completing the rapid assembly of the pedestrian bridge body 1. When the set of movable frames 206 are farthest apart, the positioning block 103 and the limiting block 107 disengage from the inclined bracket 104, at which point the pedestrian bridge body 1 can be quickly disassembled, and can be disassembled as needed. By partially replacing components in the pedestrian overpass body 1, the auxiliary upright plate 301 and the L-shaped auxiliary frame 305 can respectively provide auxiliary support for the pedestrian cross plate 101 and the step plate 108, preventing the pedestrian cross plate 101 and the step plate 108 from collapsing due to lack of support points when the pedestrian overpass body 1 is disassembled, thus reducing safety hazards. The right-angled trapezoidal assembly formed by the auxiliary upright plate 301, the extension frame 302, the support rod 303 and the inclined plate 304 improves the placement stability of the pedestrian overpass body 1. By changing the one-piece molded pedestrian overpass into a modular pedestrian overpass body 1, it is easier to quickly assemble and disassemble the pedestrian overpass body 1. At the same time, when a component in the pedestrian overpass body 1 is partially damaged, the damaged component can be replaced individually, reducing replacement costs.

[0033] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A prefabricated combined steel structure footbridge, characterized by, The utility model provides a kind of bridge, including footbridge body (1), the footbridge body (1) is symmetrically provided with a group of adjusting components (2) on both sides, the footbridge body (1) is symmetrically provided with a group of auxiliary mechanisms (3) on bottom, the footbridge body (1) is connected between adjusting component (2) by several limit bolts (4); The footbridge body (1) includes a horizontal plate (101), a group of transverse railings (102) are symmetrically provided on the upper surface of the horizontal plate (101), a group of positioning blocks (103) are symmetrically provided on both sides of the horizontal plate (101), an inclined support (104) is provided outside the positioning block (103), an inclined railing (105) is fixedly connected to the top of the inclined support (104), a plurality of limiting grooves (106) are uniformly provided inside the inclined support (104), a limiting block (107) is clamped inside the limiting groove (106), a stepping plate (108) is fixedly connected between the limiting blocks (107) symmetrically arranged in front and back, a group of clamping grooves (109) are symmetrically provided on the bottom of the horizontal plate (101), and an auxiliary groove (110) is provided in the middle of the bottom of the stepping plate (108).

2. A precast composite steel structure footbridge as claimed in claim 1, characterized in that, The thickness of the positioning block (103) and the limiting block (107) is the same, and the stepping plate (108) is clamped with the limiting groove (106) through the limiting block (107).

3. A precast composite steel structure footbridge as claimed in claim 1, characterized in that, The adjusting component (2) includes a fixed groove frame (201), a group of positioning bolts (202) are inserted into the inside of the front and back sides of the fixed groove frame (201), a forward and reverse screw rod (203) is arranged inside the fixed groove frame (201), an electric motor (204) is connected to the end of the forward and reverse screw rod (203), a protection box (205) is provided outside the electric motor (204), a group of movable frames (206) are symmetrically provided on the surface of the forward and reverse screw rod (203), and a group of sliding grooves (207) are symmetrically provided on the surface of one side of the fixed groove frame (201).

4. A precast composite steel structure footbridge as claimed in claim 3, characterized in that, The bottom of the inclined support (104) is matched and clamped in the inside of the movable frame (206), and the inclined support (104) is detachably connected with the movable frame (206) through the limiting bolt (4).

5. A precast composite steel structure footbridge as claimed in claim 3, characterized in that, The forward and reverse screw rod (203) is threadedly connected with the movable frame (206), the movable frame (206) is generally cross-shaped, and when the movable frame (206) slides in the sliding groove (207), the side wings of the movable frame (206) always adhere to one side of the sliding groove (207).

6. A precast composite steel structure footbridge as claimed in claim 1, characterized in that, The auxiliary mechanism (3) includes an auxiliary vertical plate (301), the auxiliary vertical plate (301) is vertically clamped in the clamping groove (109), an extension frame (302) is fixedly connected to the bottom of the auxiliary vertical plate (301), a support rod (303) is fixedly connected to the inner side of the extension frame (302), the support rod (303) is fixedly connected with the auxiliary vertical plate (301) through an inclined plate (304), and a plurality of L-shaped auxiliary frames (305) are uniformly distributed on the surface of the inclined plate (304).

7. A precast composite steel structure footbridge as claimed in claim 6, characterized in that, The number of the L-shaped auxiliary frame (305) is same as that of the pedal (108), and the L-shaped auxiliary frame (305) and the pedal (108) constitute a clamping structure through an auxiliary groove (110).

8. A precast composite steel structure footbridge as claimed in claim 6, characterized in that, The extension frame (302) is attached to the bottom surface of the inclined support (104) away from the side of the auxiliary vertical plate (301).

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