A bridge expansion device for preventing wheels of non-motor vehicles from sinking into the bridge and its installation method

Abstract

A bridge expansion device for preventing wheels of non-motor vehicles from getting stuck and an installation method thereof, comprising a fixing plate and a seam-crossing plate, a bottom plate is provided below the fixing plate, a first connecting bolt passes through the bottom plate from bottom to top and is fixed to the bottom of the fixing plate, a sleeve is fixed to the bottom of the bottom plate, a mounting hole is opened on the bottom plate at a position corresponding to the sleeve, the mounting hole is provided below the comb-tooth groove of the fixing plate, a second connecting bolt passes through the sleeve from bottom to top, a nut is provided in the mounting hole and is threadedly connected to the head of the second connecting bolt, and the bottom of the second connecting bolt is connected and fixed to a connecting steel bar. The first connecting bolt of the bridge expansion device for preventing wheels of non-motor vehicles from getting stuck passes through the bottom plate from bottom to top and is fixed to the bottom of the fixing plate, the second connecting bolt passes through the sleeve at the bottom of the bottom plate from bottom to top and is connected and fixed by a nut, it can be seen that the first connecting bolt and the second connecting bolt are both installed from bottom to top, the installation method is relatively novel, and the installation method is particularly suitable for fine-tooth bridge expansion devices.

Description

Technical Field

[0001] The invention relates to a bridge expansion joint device, in particular to a bridge expansion joint device for preventing wheels of non-motor vehicles from sinking into the bridge and an installation method thereof. Background Art

[0002] The multi-directional displacement expansion joint device installed on the bridge, especially the multi-directional displacement expansion joint device for the bridge with large displacement, is mostly used on highways of secondary roads and above. However, these high-grade highways and bridges are generally outside the city, and there are few electric vehicles passing through. For a long time, motorcycles were restricted on these high-grade highways. Now, with the adjustment of relevant laws and regulations, these high-grade highways have gradually opened up the passage of motorcycles from restrictions. In addition, with the development of the city, the city's expressways have also been developed accordingly. In order to alleviate the need for urban traffic, the span of urban bridges is also getting larger and larger. Therefore, the demand for multi-directional displacement expansion joint devices for bridges with large displacement that can safely pass motorcycles and electric vehicles has become more and more urgent. At present, the tooth groove width of the existing large-displacement multi-directional displacement expansion joint device for bridges exceeds the tire width of many models of motorcycles and electric vehicles. In order to ensure the passage of such vehicles, the surface of the bridge expansion joint device needs to be specially treated, which not only greatly reduces the comfort of vehicle traffic, but also reduces the appearance of the bridge accordingly. For example, the "Anti-sinking Bridge Telescopic Device" disclosed in the Chinese utility model patent with patent number CN201520044837.6 (authorization announcement number CN204849575U) requires horizontally distributed anti-sinking baffles to be arranged at intervals above the first comb tooth plate and / or the second comb tooth plate. The anti-sinking baffles are perpendicular to the comb teeth of the first comb tooth plate and / or the second comb tooth plate, and a mesh structure is formed between the anti-sinking baffles and the corresponding comb tooth plates, so that the wheels of non-motor vehicles will not sink into the gaps between the comb tooth plates, thereby ensuring the riding safety of non-motor vehicles.

[0003] In addition, according to the survey and relevant standards, the minimum width of motorcycle wheels is 53.97mm (2.125 inches), and the minimum width of urban electric vehicle wheels is 50.8mm (2.0 inches). According to the national standard GB / T2983-2015 "Motorcycle Tire Series", the maximum speed of metric motorcycles is 70km / h. The minimum width of the above tires is only 2 inches (50mm). In order to eliminate this type of safety hazard, it is necessary to optimize the comb groove and comb plate of the telescopic device. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide a bridge telescopic device for preventing non-motor vehicle wheels from sinking into the bridge, which has a novel installation structure and does not require special treatment of the surface of the telescopic device, in response to the above-mentioned existing technical status.

[0005] The second technical problem to be solved by the present invention is to provide a novel installation method for the above-mentioned existing technical status, which is particularly suitable for the installation method of a bridge expansion device with a fine-toothed rack.

[0006] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: the bridge expansion device for preventing non-motor vehicle wheels from sinking includes a fixed plate and a cross-slot plate that are staggered and can expand and contract relatively, and comb grooves are formed between the racks of the fixed plate and between the racks of the cross-slot plate. The outer end of the fixed plate is used to be installed at the end of the first beam, and the outer end of the cross-slot plate is used to be installed at the end of the second beam. It is characterized in that: a bottom plate is provided below the fixed plate, the first connecting bolt passes through the bottom plate from bottom to top and is fixed to the bottom of the fixed plate, a sleeve is fixed at the bottom of the bottom plate, and an installation hole is opened at a position corresponding to the sleeve on the bottom plate, the installation hole is provided below the comb groove of the fixed plate, the second connecting bolt passes through the sleeve from bottom to top, a nut is provided in the installation hole and is threadedly connected to the head of the second connecting bolt, and the bottom of the second connecting bolt is connected and fixed to the connecting steel bar.

[0007] In order to effectively prevent the wheel of a non-motor vehicle from sinking into the comb groove, the width of the comb groove is 30-38 mm, and the widths of the rack of the fixed plate and the rack of the cross-seam plate are equal, both of which are 25-30 mm.

[0008] Preferably, a slide plate is sandwiched between the fixing plate and the bottom plate, and the first connecting bolt passes through the bottom plate and the slide plate in sequence from bottom to top and is fixed to the bottom of the fixing plate.

[0009] In order to make the connection structure between the bottom plate and the fixed plate more firm, welding holes aligned up and down are opened on the bottom plate and the slide plate, and the bottom plate, the slide plate and the fixed plate are welded and fixed through the welding holes.

[0010] In order to further improve the firmness of the connection structure between the bottom plate and the fixed plate, a radial step surface matching the nut is provided inside the sleeve, and a tooth portion is formed at the bottom of the nut to abut against the radial step surface. In this way, when the nut is screwed in, the tooth portion presses against and penetrates deep into the sleeve, making the connection structure more firm.

[0011] In order to adjust the installation height of the base plate and the fixing plate according to the specific conditions of the construction site, the second connecting bolt is an L-shaped bolt, and a buffer washer, a height-adjusting washer and a fastening nut are sequentially sleeved on the vertical section of the second connecting bolt from top to bottom, and the buffer washer is clamped between the sleeve and the height-adjusting washer. In this way, different height-adjusting washer can be selected for installation height adjustment.

[0012] Further preferably, the horizontal section of the second connecting bolt is connected and fixed to the connecting steel bar.

[0013] Further preferably, the outer end of the fixing plate is fixedly connected to the base plate via a third connecting bolt, and the bottom of the third connecting bolt is connected and fixed to the connecting steel bar.

[0014] The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: the installation method of the bridge expansion device for preventing non-motor vehicle wheels from getting stuck, characterized in that: the first connecting bolt, sleeve, base plate and fixed plate are assembled into a first connecting assembly, the second connecting bolt and connecting steel bar are assembled into a second connecting assembly, and the first connecting assembly and the second connecting assembly are assembled together.

[0015] Further preferably, the assembling steps of the first connecting assembly are as follows:

[0016] First, weld the sleeve to the bottom of the base plate; then, connect and fix the base plate and the fixing plate through the first connecting bolt; finally, drip welding liquid into the welding hole to weld and fix the base plate, the sliding plate and the fixing plate;

[0017] The assembly structure of the second connection assembly is as follows: the bottom of the second connection bolt is welded and fixed on the connection steel bar;

[0018] The mutual assembly structure of the first connecting assembly and the second connecting assembly is as follows: the upper end of the second connecting bolt passes upward through the sleeve and is connected and fixed by a nut.

[0019] Compared with the prior art, the advantages of the present invention are: the first connecting bolt of the bridge expansion device for preventing non-motor vehicle wheels from getting stuck passes through the bottom plate from bottom to top and is fixed to the bottom of the fixed plate, and the second connecting bolt passes through the sleeve at the bottom of the bottom plate from bottom to top and is connected and fixed by a nut. It can be seen that the first connecting bolt and the second connecting bolt are both installed from bottom to top, and the installation method is relatively novel. No installation holes are left on the front of the fixed plate, which not only makes the surface of the expansion device more concise, but also the installation structure is particularly suitable for bridge expansion devices with fine-tooth racks. In addition, the bridge expansion device using fine-tooth racks allows non-motor vehicles such as motorcycles and electric vehicles to pass safely on the expansion device on this type of road bridge, greatly improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A top view of a bridge expansion device according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A front view of the bridge expansion device shown;

[0022] Figure 3 A cross-sectional view of a fixing plate installation structure according to an embodiment of the present invention;

[0023] Figure 4 for Figure 3 A magnified schematic diagram of part A;

[0024] Figure 5 for Figure 1 A top view of the fixing plate mounting structure shown;

[0025] Figure 6 A structural cross-sectional view of a bottom plate according to an embodiment of the present invention;

[0026] Figure 7 for Figure 6 A magnified schematic diagram of part B;

[0027] Figure 8 Schematic diagram of the structure of the cross-seam plate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings.

[0029] like Figures 1 to 8 As shown, the bridge expansion device of this embodiment includes a fixed plate 1 and a cross-slot plate 2 that are staggered and can expand and contract relatively. Comb-tooth grooves 3 are formed between the racks of the fixed plate 1 and the racks of the cross-slot plate. The outer end of the fixed plate 1 is used to be installed on the first beam end 101 of the bridge, and the outer end of the cross-slot plate 2 is used to be installed on the second beam end 102 of the bridge. The above-mentioned installation structure is the same as the existing expansion joint device and will not be described in detail here. In addition, the fixed plate 1 and the cross-slot plate 2 of this embodiment use fine-toothed racks, and the width of the comb-tooth groove 3 is 30 to 38 mm. The width of the racks of the fixed plate 1 and the racks of the cross-slot plate 2 are equal, both of which are 25 to 30 mm, which can effectively prevent the wheels of non-motor vehicles from falling into the comb-tooth grooves 3.

[0030] A slide plate 5 is provided below the fixed plate 1, and a bottom plate 4 is provided below the slide plate 5. Vertically aligned through holes 16 are provided on the bottom plate 4 and the slide plate 5, and a corresponding blind hole is provided at the bottom of the fixed plate 1. The first connecting bolt 6 passes through the bottom plate 4 and the slide plate 5 in sequence from bottom to top and is fixed to the bottom of the fixed plate 1.

[0031] Vertically aligned welding holes 11 are also provided at corresponding positions of the bottom plate 4 and the slide plate 5 , and the welding liquid 17 is dripped into the welding holes 11 to weld and fix the bottom plate 4 , the slide plate 5 and the fixing plate 1 .

[0032] A sleeve 7 is welded at the bottom of the bottom plate 4, and a mounting hole 41 is opened at a position corresponding to the sleeve 7 on the bottom plate 4. The mounting hole 41 is arranged below the comb groove 3 of the fixing plate 1. The second connecting bolt 8 passes through the sleeve 7 from bottom to top, and the nut 9 is arranged in the mounting hole 41 and is threadedly connected to the head of the second connecting bolt 8. The bottom of the second connecting bolt 8 is connected and fixed to the connecting steel bar 10, see Figure 2. In this embodiment, the second connecting bolt 8 is an L-shaped bolt, and a buffer gasket 12, a height-adjusting gasket 13 and a fastening nut 14 are sequentially sleeved on the vertical section of the second connecting bolt 8 from top to bottom, and the buffer gasket 12 is clamped between the sleeve 7 and the height-adjusting gasket 13. The horizontal section of the second connecting bolt 8 is connected and fixed to the connecting steel bar 10. In addition, in order to make the connection of the nut 9 more secure, a radial step surface 71 matching the nut 9 is provided inside the sleeve 7, and a tooth portion 91 abutting against the radial step surface 71 is formed at the bottom of the nut 9. As the nut 9 is screwed in, the tooth portion 91 presses the radial step surface 71 and penetrates deep into the sleeve 7, making the connection structure more secure.

[0033] In this embodiment, the outer end of the fixing plate 1 is fixedly connected to the bottom plate 4 by the third connecting bolt 15, and the bottom of the third connecting bolt 15 is connected and fixed to the connecting steel bar 10. The connection structure can refer to the existing bridge expansion device, and will not be described in detail here.

[0034] Before installing the bridge expansion device for preventing non-motor vehicle wheels from getting stuck, the first connecting bolt 6, sleeve 7, base plate 4 and fixed plate 1 are generally assembled into a first connecting assembly in advance in the workshop. The specific assembly steps are: first, the sleeve 7 is welded to the bottom of the base plate 4; then, the base plate 4 is connected and fixed to the fixed plate 1 through the first connecting bolt 6; finally, welding liquid 17 is dripped into the welding hole 11 to weld and fix the base plate 4, the slide plate 5 and the fixed plate 1. The bottom of the second connecting bolt 8 is welded and fixed to the connecting steel bar 10 in advance to form a second connecting assembly. After the first connecting assembly and the second connecting assembly are assembled, at the construction site, the upper end of the second connecting bolt 8 passes upward through the sleeve 7 and is connected and fixed by the nut 9, thereby realizing the assembly of the first connecting assembly and the second connecting assembly.

Claims

1. A bridge expansion device for preventing wheels of non-motor vehicles from sinking, comprising a fixed plate (1) and a cross-slot plate (2) which are staggered and relatively expandable, a comb groove (3) is formed between the racks of the fixed plate (1) and between the racks of the cross-slot plate, the outer end of the fixed plate (1) is used to be installed on the end of a first beam (101), and the outer end of the cross-slot plate (2) is used to be installed on the end of a second beam (102), characterized in that: A bottom plate (4) is provided below the fixing plate (1), a first connecting bolt (6) passes through the bottom plate (4) from bottom to top and is fixed to the bottom of the fixing plate (1), a sleeve (7) is fixed to the bottom of the bottom plate (4), a mounting hole (41) is opened on the bottom plate (4) at a position corresponding to the sleeve, the mounting hole (41) is provided below the comb tooth groove (3) of the fixing plate (1), a second connecting bolt (8) passes through the sleeve (7) from bottom to top, a nut (9) is provided in the mounting hole (41) and is threaded The second connecting bolt (8) is connected to the head of the second connecting bolt (8), and the bottom of the second connecting bolt (8) is connected and fixed to the connecting steel bar (10). The width of the comb groove (3) is 30-38 mm. The width of the rack of the fixed plate (1) and the rack of the cross-seam plate (2) are equal, both of which are 25-30 mm. A slide plate (5) is sandwiched between the fixed plate (1) and the bottom plate (4). The first connecting bolt (6) passes through the bottom plate (4) and the slide plate (5) in sequence from bottom to top and is fixed to the bottom of the fixed plate (1).

2. A bridge expansion device for preventing wheels of non-motor vehicles from sinking into the bridge according to claim 1, characterized in that: Vertically aligned welding holes (11) are provided on the bottom plate (4) and the slide plate (5); the bottom plate (4), the slide plate (5) and the fixing plate (1) are fixed by welding through the welding holes (11).

3. The bridge expansion device for preventing wheels of non-motor vehicles from sinking into the bridge according to claim 1 is characterized in that: The sleeve (7) is provided with a radial step surface (71) inside thereof which matches the nut (9), and the bottom of the nut (9) is formed with a tooth portion (91) which abuts against the radial step surface (71).

4. The bridge expansion device for preventing wheels of non-motor vehicles from sinking into the bridge according to claim 1, characterized in that: The second connecting bolt (8) is an L-shaped bolt, and a buffer gasket (12), a height-adjusting gasket (13) and a fastening nut (14) are sequentially sleeved on the vertical section of the second connecting bolt (8) from top to bottom, and the buffer gasket (12) is clamped between the sleeve (7) and the height-adjusting gasket (13).

5. The bridge expansion device for preventing wheels of non-motor vehicles from sinking into the bridge according to claim 4, characterized in that: The horizontal section of the second connecting bolt (8) is connected and fixed to the connecting steel bar (10).

6. The bridge expansion device for preventing wheels of non-motor vehicles from sinking into the bridge according to claim 1, characterized in that: The outer end of the fixing plate (1) is fixedly connected to the bottom plate (4) via a third connecting bolt (15), and the bottom of the third connecting bolt (15) is connected and fixed to the connecting steel bar (10).

7. A method for installing a bridge expansion device for preventing wheels of non-motor vehicles from sinking into the bridge as claimed in claim 2, characterized in that: The first connecting bolt (6), sleeve (7), base plate (4) and fixing plate (1) are assembled into a first connecting assembly, the second connecting bolt (8) and connecting steel bar (10) are assembled into a second connecting assembly, and the first connecting assembly and the second connecting assembly are assembled together.

8. The method for installing the bridge expansion device for preventing non-motor vehicle wheels from sinking into the bridge according to claim 7 is characterized in that: The assembly steps of the first connection assembly are as follows: first, the sleeve (7) is welded to the bottom of the base plate (4); then, the base plate (4) is connected and fixed to the fixing plate (1) by means of the first connection bolt (6); finally, welding liquid is dripped into the welding hole (11) to weld and fix the base plate (4), the slide plate (5) and the fixing plate (1); The assembly structure of the second connection assembly is as follows: the bottom of the second connection bolt (8) is welded and fixed on the connection steel bar (10); The mutual assembly structure of the first connecting assembly and the second connecting assembly is as follows: the upper end of the second connecting bolt (8) passes through the sleeve (7) upwards and is connected and fixed by a nut (9).

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