CN112832120B - Chain bridge anti-falling device - Google Patents
Chain bridge anti-falling device Download PDFInfo
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- CN112832120B CN112832120B CN202110048254.0A CN202110048254A CN112832120B CN 112832120 B CN112832120 B CN 112832120B CN 202110048254 A CN202110048254 A CN 202110048254A CN 112832120 B CN112832120 B CN 112832120B
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- 230000006835 compression Effects 0.000 claims abstract description 39
- 238000007906 compression Methods 0.000 claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 14
- 230000002787 reinforcement Effects 0.000 claims description 12
- 230000002441 reversible effect Effects 0.000 claims description 11
- 239000004567 concrete Substances 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a chain type bridge anti-falling device, which relates to the technical field of bridge construction equipment.A mounting frame body is fixedly arranged on the outer side wall of a bridge pier; a plurality of first hanging rings are fixedly arranged on the first fixing plate from front to back at equal intervals, a plurality of connecting rods are vertically and fixedly arranged on the bottom surface of the second fixing plate at equal intervals, and the lower ends of the connecting rods movably penetrate through the bottom surface of the box girder and are fixedly connected with the second hanging rings; the fourth hanging ring is fixedly connected with the first sleeve, the upper end of the adjusting rod penetrates through the opening end of the lower side of the first sleeve and then extends into the first sleeve, a first limiting plate is fixedly connected to the extending end, and a first compression spring is sleeved on the adjusting rod between the first limiting plate and the opening end of the first sleeve; the inner parts of two adjacent box girders are matched with each other to be provided with an anti-falling limiting mechanism; the lap joint part of the two box beams can effectively prevent the beam body from falling or separating, and the lap joint part can be used as secondary anti-falling protection, thereby ensuring the life and property safety of people.
Description
Technical Field
The invention relates to the technical field of bridge construction equipment, in particular to a chain type bridge anti-falling device.
Background
Along with the development of economy, the construction strength of the country on infrastructure is also increased, bridges and construction projects are developed at a high speed, and China is moving from the bridge kingdom to the bridge strong country; in the work of earthquake prevention and disaster reduction, the life line engineering is the most important link, and a bridge is one of the life line engineering, is the most important thing as a transportation junction and is closely related to the life of people.
The bridge is used as a junction project on a traffic line, and the danger of beam falling damage can be caused by natural factors such as earthquakes and the like; therefore, the whole traffic system is in a paralysis state, which causes great loss to people's lives and properties, causing great influences in all aspects, and after the bridge falls, the repair work of the bridge becomes extremely complicated, so that a chain type bridge falling prevention device is urgently needed.
Disclosure of Invention
The invention aims to provide a chain type bridge anti-falling device which is simple in structure, reasonable in design and convenient to use, aims to overcome the defects and shortcomings of the prior art, effectively prevents the girder body from falling or disengaging at the lap joint part of two box girders, serves as secondary anti-falling protection, and ensures the life and property safety of people.
In order to achieve the purpose, the invention adopts the technical scheme that: the bridge comprises box girders, a bridge floor, piers and rubber bearings, wherein the butt joint part of two adjacent box girders is arranged on the top surfaces of the piers; the anti-falling device also comprises a mounting frame body, a first fixing plate, a second fixing plate, a first hanging ring, a second hanging ring, a third hanging ring, a connecting rod and an anti-falling limiting mechanism; the outer side wall of the pier is fixedly provided with a mounting frame body; the left side and the right side of the top surface of the mounting frame body are symmetrically and fixedly provided with a first fixing plate, a plurality of first hanging rings are fixedly arranged on the first fixing plate at equal intervals from front to back, a second fixing plate is fixedly arranged on the inner bottom surface of the box girder, a plurality of connecting rods are vertically and fixedly arranged on the bottom surface of the second fixing plate at equal intervals, and the lower ends of the connecting rods movably penetrate through the bottom surface of the box girder and are fixedly connected with the second hanging rings; the first hanging ring is movably connected with a third hanging ring which is fixedly connected with an adjusting rod, the second hanging ring is movably connected with a fourth hanging ring which is fixedly connected with a first sleeve, the upper end of the adjusting rod penetrates through the opening end of the lower side of the first sleeve and then extends into the first sleeve, a limiting plate is fixedly connected to the extending end, a first compression spring is sleeved on the adjusting rod between the first limiting plate and the opening end of the first sleeve, one end of the first compression spring is fixedly connected with the first limiting plate, and the other end of the first compression spring is fixedly connected with the opening end of the first sleeve; the inner parts of two adjacent box girders are matched with each other to be provided with an anti-falling limiting mechanism;
the anti-falling limiting mechanism comprises a first limiting rod, a second sleeve, a third sleeve, a fourth sleeve, a guide rod and a limiting ring; a mounting plate is fixedly arranged in the box beam on the right side, a guide rod is vertically and fixedly arranged on the left side wall of the mounting plate, a second sleeve and a third sleeve are sequentially sleeved at the left end of the guide rod from left to right, the second sleeve is movably sleeved on the guide rod, the third sleeve is fixedly sleeved on the guide rod, shaft seats are fixedly arranged on the upper side wall and the lower side wall of the second sleeve and the third sleeve respectively, a first limiting rod is movably connected onto the shaft seat of the second sleeve through a bearing and a rotating shaft, a second limiting rod is movably connected onto the shaft seat of the third sleeve through a bearing and a rotating shaft, the end parts of the first limiting rod and the second limiting rod on the corresponding positions are hinged, a tension spring is movably sleeved on the guide rod between the second sleeve and the third sleeve, one end of the tension spring is fixedly connected with the second sleeve, and the other end of the tension spring is fixedly connected with the third sleeve; a fourth sleeve is movably sleeved on the outer sides of the first limiting rod and the second limiting rod; the first limiting rod, the second limiting rod, the guide rod and the fourth sleeve are movably inserted into the fifth sleeve, the fifth sleeve is arranged inside the box girder on the left side, a limiting ring is fixedly arranged on the inner side wall of the left end of the fifth sleeve, and the left end of the fourth sleeve is in limiting arrangement with the limiting ring; the upper side wall and the lower side wall of the fifth sleeve are symmetrically and fixedly provided with adjusting blocks, the upper side wall and the lower side wall of the left box body are symmetrically and fixedly provided with a plurality of reserved screws, the reserved screws on the same side are fixedly arranged on the side wall of the box body, and one end of each adjusting block is movably inserted into the box body.
Furthermore, a plurality of reserved fixing pieces are fixedly arranged on the bottom surface of the first fixing plate and fixedly connected with a reinforcement cage in the installation frame body; the reservation mounting ligature before carrying out concrete placement on the steel reinforcement cage, then pour, increase the binding power between fixed plate and the installation support body No. one.
Furthermore, a plurality of wheel seats are symmetrically and fixedly arranged on the upper side and the lower side of the guide rod on the right side of the third sleeve, guide wheels are rotatably arranged in the middle of the wheel seats through bearings and rotating shafts, guide grooves are symmetrically formed in the upper side and the lower side of the inner side wall of the fourth sleeve, and the guide wheels are arranged in the guide grooves in a rolling manner; when the fourth sleeve is limited by the limiting ring and cannot move leftwards, the fourth sleeve is limited and guided through the matching sliding of the guide wheel and the guide groove.
Furthermore, a rubber circular table is fixedly sleeved at the right end of the guide rod, and the diameter of the rubber circular table is gradually increased from left to right; the rubber round table seals the right end of the fifth sleeve while limiting the fourth sleeve, and reduces water vapor entering.
Furthermore, a second limiting plate is fixedly arranged on the end of the adjusting block inserted in the box body, a second compression spring is fixedly arranged on the adjusting block between the second limiting plate and the inner side wall of the box body, one end of the second compression spring is fixedly connected with the second limiting plate, and the other end of the second compression spring is fixedly connected with the inner side wall of the box body; the regulating block fixes the fifth sleeve and absorbs the impact force transmitted by the fifth sleeve by the reverse compression force of the second compression spring.
The working principle of the invention is as follows: when the installation frame body is used for pouring the bridge pier, binding and fixing a reinforcement cage inside the installation frame body and a reinforcement cage inside the bridge pier, and then integrally pouring concrete; when the box girder is assembled, the left box girder is installed by external hoisting equipment, then the right box girder is hoisted, a first limiting rod and a second limiting rod are pressed in the fourth sleeve by the first limiting rod and the second limiting rod, when the guide rod is gradually inserted in the fifth sleeve, the first limiting rod and the second limiting rod continuously move leftwards under the action of the limiting ring, the fourth sleeve is blocked by the limiting ring until the first limiting rod and the second limiting rod are integrally exposed at the left end of the fifth sleeve, under the action of reverse tensile force of the tension spring, the angle between the first limiting rod and the second limiting rod is reduced, the second limiting rod is clamped at the left opening end of the fifth sleeve, and adjacent box girders are connected and fastened; when the box girders on the left side and the right side are impacted by the outside, the reverse compression force of the first compression spring acts on the box girders, and when the first spring is compressed to the shortest, rigid tension is formed between the first sleeve and the adjusting rod, so that the phenomenon of girder falling is prevented.
After adopting the structure, the invention has the beneficial effects that:
1. the anti-falling limiting mechanism effectively prevents the girder body from falling or disengaging at the lap joint part of the two box girders through the rigid clamping of the first limiting rod and the second limiting rod, and is used as secondary anti-falling protection, so that the life and property safety of people is ensured;
2. the bottom of the box girder buffers and absorbs the impact received by the bridge floor through the reverse compression force of the first compression spring, so that the girder falling is effectively prevented;
3. the sleeve and the adjusting rod are connected with the first fixing plate and the second fixing plate through the third hanging ring and the fourth hanging ring, so that impact in all directions can be buffered.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 1.
Fig. 4 is a schematic view of the internal structure of the tank beam of the present invention on the left side.
Fig. 5 is a schematic view of a connection structure of the second fixing plate and the second hanging ring of the invention.
Fig. 6 is a schematic view of the connection structure of the fourth sleeve, the guide rod and the guide wheel of the invention.
Description of the reference numerals:
the device comprises a box girder 1, a bridge deck 2, piers 3, rubber supports 4, an installation frame body 5, a first fixing plate 6, a first hanging ring 7, a second fixing plate 8, a connecting rod 9, a third hanging ring 10, an adjusting rod 11, a fourth hanging ring 12, a first sleeve 13, a first limit plate 14, a first compression spring 15, an anti-falling limit mechanism 16, an installation plate 16-1, a guide rod 16-2, a second sleeve 16-3, a third sleeve 16-4, a shaft seat 16-5, a first limit rod 16-6, a second limit rod 16-7, a tension spring 16-8, a fourth sleeve 16-9, a fifth sleeve 16-10, a limit ring 16-11, an adjusting block 16-12, a reserved screw 16-13, a box body 16-14, a reserved fixing piece 17, a wheel seat 18, a guide wheel 19, a guide groove 20, rubber 21, a second limit plate 22, a round platform 16-11, a round platform 16-12, a round platform 16-13, a round platform 16-14, a round platform, a bridge, a round platform, a bridge, a bridge, a, A second compression spring 23 and a second hanging ring 24.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 6, the technical solution adopted by the present embodiment is: the bridge comprises box girders 1, a bridge floor 2, piers 3 and rubber bearings 4, wherein the butt joint of two adjacent box girders 1 is arranged on the top surfaces of the piers 3, the rubber bearings 4 are fixedly embedded on the bottom surfaces of the piers 3 and the end parts of the box girders 1, and the bridge floor 2 is laid on the top surfaces of the box girders 1; the anti-falling device further comprises a mounting frame body 5, a first fixing plate 6, a second fixing plate 8, a first hanging ring 7, a second hanging ring 24, a third hanging ring 10, a connecting rod 9 and an anti-falling limiting mechanism 16; the outer side wall of the pier 3 is poured with an installation frame body 5 through reinforced concrete; the left side and the right side of the top surface of the mounting frame body 5 are symmetrically and fixedly provided with a first fixing plate 6; a plurality of reserved fixing pieces 17 are fixedly arranged on the bottom surface of the first fixing plate 6, and the reserved fixing pieces 17 are fixedly connected with a reinforcement cage in the installation frame body 5; the reserved fixing piece 17 is bound on a reinforcement cage before concrete pouring is carried out, then pouring is carried out, the connecting force between the first fixing plate 6 and the mounting frame body 5 is increased, a plurality of first hanging rings 7 are fixedly welded on the first fixing plate 6 from front to back at equal intervals, a second fixing plate 8 is fixedly arranged on the inner bottom surface of the box girder 1 through bolts, a plurality of connecting rods 9 are vertically and fixedly welded on the bottom surface of the second fixing plate 8 at equal intervals, and the lower ends of the connecting rods 9 are fixedly connected with second hanging rings 24 after movably penetrating through the bottom surface of the box girder 1; a third hanging ring 10 is movably connected to the first hanging ring 7, the third hanging ring 10 is fixedly welded with an adjusting rod 11, a fourth hanging ring 12 is movably connected to the second hanging ring 24, the fourth hanging ring 12 is fixedly welded with the first sleeve 13, the upper end of the adjusting rod 11 penetrates through the opening end of the lower side of the first sleeve 13 and then extends into the first sleeve 13, a first limiting plate 14 is fixedly welded to the extending end, a first compression spring 15 is sleeved on the adjusting rod 11 between the first limiting plate 14 and the opening end of the first sleeve 13, one end of the first compression spring 15 is fixedly welded with the first limiting plate 14, and the other end of the first compression spring 15 is fixedly welded with the opening end of the first sleeve 13; the inner parts of two adjacent box girders 1 are matched with each other to be provided with an anti-falling limiting mechanism 16;
the anti-falling limiting mechanism 16 comprises a first limiting rod 16-6, a second limiting rod 16-7, a second sleeve 16-3, a third sleeve 16-4, a fourth sleeve 16-9, a guide rod 16-2 and a limiting ring 16-11; a mounting plate 16-1 is fixedly arranged in the box girder 1 on the right side through bolts, a guide rod 16-2 is vertically and fixedly welded on the left side wall of the mounting plate 16-1, the left end of the guide rod 16-2 is sequentially sleeved with a second sleeve 16-3 and a third sleeve 16-4 from left to right, the second sleeve 16-3 is movably sleeved on the guide rod 16-2 through a linear bearing, the third sleeve 16-4 is fixedly welded on the guide rod 16-2, shaft seats 16-5 are fixedly welded on the upper side wall and the lower side wall of the second sleeve 16-3 and the third sleeve 16-4, a first limiting rod 16-6 is movably connected on the shaft seat 16-5 of the second sleeve 16-3 through a bearing and a rotating shaft, a second limiting rod 16-7 is movably connected on the shaft seat 16-5 of the third sleeve 16-4 through a bearing and a rotating shaft, the end parts of a first limiting rod 16-6 and a second limiting rod 16-7 at corresponding positions are hinged, a tension spring 16-8 is movably sleeved on a guide rod 16-2 between a second sleeve 16-3 and a third sleeve 16-4, one end of the tension spring 16-8 is fixedly welded with the second sleeve 16-3, and the other end of the tension spring 16-8 is fixedly welded with the third sleeve 16-4; a fourth sleeve 16-9 is movably sleeved on the outer sides of the first limiting rod 16-6 and the second limiting rod 16-7; the first limiting rod 16-6, the second limiting rod 16-7, the guide rod 16-2 and the fourth sleeve 16-9 are movably inserted into the fifth sleeve 16-10, the fifth sleeve 16-10 is arranged inside the left box girder 1, a limiting ring 16-11 is fixedly welded on the inner side wall of the left end of the fifth sleeve 16-10, and the left end of the fourth sleeve 16-9 is limited with the limiting ring 16-11; a plurality of wheel seats 18 are symmetrically and fixedly welded on the upper side and the lower side of a guide rod 16-2 on the right side of the third sleeve 16-4, a guide wheel 19 is rotatably arranged in the middle of each wheel seat 18 through a bearing and a rotating shaft, guide grooves 20 are symmetrically arranged on the upper side and the lower side of the inner side wall of the fourth sleeve 16-9, and the guide wheels 19 are arranged inside the guide grooves 20 in a rolling manner; when the fourth sleeve 16-9 is limited by the limiting ring 16-11 and can not move leftwards, the fourth sleeve 16-9 is limited and guided through the matching sliding of the guide wheel 19 and the guide groove 20; adjusting blocks 16-12 are symmetrically and fixedly welded on the upper side wall and the lower side wall of the fifth sleeve 16-10, a plurality of reserved screws 16-13 are symmetrically and fixedly arranged on the upper side wall and the lower side wall inside the box body 16-14 on the left side, the reserved screws 16-13 on the same side are fixedly arranged on the side walls of the box body 16-14, and one end of each adjusting block 16-12 is movably inserted inside the box body 16-14; the adjusting block 16-12 is fixedly provided with a second limiting plate 22 on the end inserted in the box body 16-14, a second compression spring 23 is fixedly arranged on the adjusting block 16-12 between the second limiting plate 22 and the inner side wall of the box body 16-14, one end of the second compression spring 23 is fixedly connected with the second limiting plate 22, and the other end of the second compression spring 23 is fixedly connected with the inner side wall of the box body 16-14; the impact force transmitted by the fifth sleeve 16-10 is absorbed by the reverse compression force of the second compression spring 23 while the fifth sleeve 16-10 is fixed by the adjusting block 16-12; the right end of the guide rod 16-2 is fixedly sleeved with a rubber round table 21, and the diameter of the rubber round table 21 is gradually increased from left to right; the rubber round table 21 limits the fourth sleeve 16-9, and seals the right end of the fifth sleeve 16-10, so that water vapor is prevented from entering.
The working principle of the specific implementation mode is as follows: when the installation frame body 5 is used for pouring the bridge pier 3, binding and fixing a reinforcement cage inside the installation frame body 5 and a reinforcement cage inside the bridge pier 3, and then integrally pouring concrete; when the box girder 1 is assembled, the box girder 1 on the left side is installed by external hoisting equipment, then the box girder 1 on the right side is hoisted, at the moment, the first limiting rod 16-6 and the second limiting rod 16-7 are pressed in the fourth sleeve 16-9, when the guide rod 16-2 is gradually inserted in the fifth sleeve 16-10, the first limiting rod 16-6 and the second limiting rod 16-7 continuously move leftwards under the action of the limiting ring 16-11, the fourth sleeve 16-9 is blocked by the limiting ring 16-11 until the first limiting rod 16-6 and the second limiting rod 16-7 are integrally exposed at the left end of the fifth sleeve 16-10, and under the action of reverse tensile force of the tension spring 16-8, the angle between the first limiting rod 16-6 and the second limiting rod 16-7 is reduced, a second limiting rod 16-7 is clamped on the opening end on the left side of the fifth sleeve 16-10 to connect and fasten adjacent box girders 1; when the box girder 1 on the left side and the right side is impacted externally, the box girder 1 is acted by the reverse compression force of the first compression spring 15, and when the first compression spring is compressed to the shortest, a rigid tension is formed between the first sleeve 13 and the adjusting rod 11, so that the phenomenon of girder falling is prevented.
After adopting above-mentioned structure, this embodiment beneficial effect does:
1. the anti-falling limiting mechanism 16 effectively prevents the beam bodies from falling or being separated from the lap joint part of the two box beams 1 through the rigid clamping of the first limiting rod 16-6 and the second limiting rod 16-7, and is used as secondary anti-falling protection, so that the life and property safety of people is ensured;
2. the bottom of the box girder 1 buffers and absorbs the impact received by the bridge deck 2 through the reverse compression force of the first compression spring 15, so that the girder falling is effectively prevented;
3. the first sleeve 13 and the adjusting rod 11 are connected with the first fixing plate 6 and the second fixing plate 8 through the third hanging ring 10 and the fourth hanging ring 12, so that impact in all directions can be buffered.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (1)
1. A chain bridge anti-falling device comprises box girders (1), a bridge deck (2), piers (3) and rubber supports (4), wherein the joint of two adjacent box girders (1) is arranged on the top surfaces of the piers (3), the rubber supports (4) are fixedly embedded on the bottom surfaces of the end parts of the piers (3) and the box girders (1), and the bridge deck (2) is fixedly arranged on the top surfaces of the box girders (1); the method is characterized in that: the anti-falling device also comprises a mounting frame body (5), a first fixing plate (6), a second fixing plate (8), a first hanging ring (7), a second hanging ring (24), a third hanging ring (10), a connecting rod (9) and an anti-falling limiting mechanism (16); the outer side wall of the pier (3) is fixedly provided with a mounting frame body (5); the left side and the right side of the top surface of the mounting frame body (5) are symmetrically and fixedly provided with a first fixing plate (6), a plurality of first hanging rings (7) are fixedly arranged on the first fixing plate (6) at equal intervals from front to back, a second fixing plate (8) is fixedly arranged on the inner bottom surface of the box girder (1), a plurality of connecting rods (9) are vertically and fixedly arranged on the bottom surface of the second fixing plate (8) at equal intervals, and the lower ends of the connecting rods (9) movably penetrate through the bottom surface of the box girder (1) and then are fixedly connected with a second hanging ring (24); the first hanging ring (7) is movably connected with a third hanging ring (10), the third hanging ring (10) is fixedly connected with an adjusting rod (11), the second hanging ring (24) is movably connected with a fourth hanging ring (12), the fourth hanging ring (12) is fixedly connected with a first sleeve (13), the upper end of the adjusting rod (11) penetrates through the open end of the lower side of the first sleeve (13) and then stretches into the first sleeve (13), a first limiting plate (14) is fixedly connected to the stretching end, a first compression spring (15) is sleeved on the adjusting rod (11) between the first limiting plate (14) and the open end of the first sleeve (13), one end of the first compression spring (15) is fixedly connected with the first limiting plate (14), and the other end of the first compression spring (15) is fixedly connected with the open end of the first sleeve (13); the inner parts of two adjacent box girders (1) are matched with each other to be provided with an anti-falling limiting mechanism (16);
the anti-falling limiting mechanism (16) comprises a first limiting rod (16-6), a second limiting rod (16-7), a second sleeve (16-3), a third sleeve (16-4), a fourth sleeve (16-9), a guide rod (16-2) and a limiting ring (16-11); a mounting plate (16-1) is fixedly arranged in the box girder (1) on the right side, a guide rod (16-2) is vertically and fixedly arranged on the left side wall of the mounting plate (16-1), a second sleeve (16-3) and a third sleeve (16-4) are sequentially sleeved at the left end of the guide rod (16-2) from left to right, the second sleeve (16-3) is movably sleeved on the guide rod (16-2), the third sleeve (16-4) is fixedly sleeved on the guide rod (16-2), shaft seats (16-5) are fixedly arranged on the upper side wall and the lower side wall of the second sleeve (16-3) and the third sleeve (16-4), a first limiting rod (16-6) is movably connected on the shaft seat (16-5) of the second sleeve (16-3) through a bearing and a rotating shaft, a second limiting rod (16-7) is movably connected to a shaft seat (16-5) of the third sleeve (16-4) through a bearing and a rotating shaft, a first limiting rod (16-6) at a corresponding position is hinged to the end of the second limiting rod (16-7), a tension spring (16-8) is movably sleeved on a guide rod (16-2) between the second sleeve (16-3) and the third sleeve (16-4), one end of the tension spring (16-8) is fixedly connected with the second sleeve (16-3), and the other end of the tension spring (16-8) is fixedly connected with the third sleeve (16-4); a fourth sleeve (16-9) is movably sleeved on the outer sides of the first limiting rod (16-6) and the second limiting rod (16-7); the first limiting rod (16-6), the second limiting rod (16-7), the guide rod (16-2) and the fourth sleeve (16-9) are movably inserted into the fifth sleeve (16-10), the fifth sleeve (16-10) is arranged inside the box girder (1) on the left side, a limiting ring (16-11) is fixedly arranged on the inner side wall of the left end of the fifth sleeve (16-10), and the left end of the fourth sleeve (16-9) is limited with the limiting ring (16-11); adjusting blocks (16-12) are symmetrically and fixedly arranged on the upper side wall and the lower side wall of the fifth sleeve (16-10), a plurality of reserved screws (16-13) are symmetrically and fixedly arranged on the upper side wall and the lower side wall of the inner part of the box body (16-14) on the left side, the reserved screws (16-13) on the same side are fixedly arranged on the side walls of the box body (16-14), and one end of each adjusting block (16-12) is movably inserted into the box body (16-14);
a plurality of reserved fixing pieces (17) are fixedly arranged on the bottom surface of the first fixing plate (6), and the reserved fixing pieces (17) are fixedly connected with a reinforcement cage in the installation frame body (5); the reserved fixing piece (17) is bound on a reinforcement cage before concrete pouring, then pouring is carried out, and the connecting force between the first fixing plate (6) and the installation frame body is increased;
a plurality of wheel seats (18) are symmetrically and fixedly arranged on the upper side and the lower side of a guide rod (16-2) on the right side of the third sleeve (16-4), a guide wheel (19) is rotatably arranged in the middle of each wheel seat (18) through a bearing and a rotating shaft, guide grooves (20) are symmetrically formed in the upper side and the lower side of the inner side wall of the fourth sleeve (16-9), and the guide wheels (19) are arranged in the guide grooves (20) in a rolling manner; when the fourth sleeve (16-9) is limited by the limiting ring (16-11) and cannot move leftwards, the fourth sleeve (16-9) is limited and guided through the matching sliding of the guide wheel (19) and the guide groove (20);
the right end of the guide rod (16-2) is fixedly sleeved with a rubber round table (21), and the diameter of the rubber round table (21) is gradually increased from left to right; the rubber round table (21) limits the fourth sleeve (16-9), and simultaneously seals the right end of the fifth sleeve (16-10), so that the water vapor is reduced;
a second limiting plate (22) is fixedly arranged on the end of the adjusting block (16-12) inserted in the box body (16-14), a second compression spring (23) is fixedly arranged on the adjusting block (16-12) between the second limiting plate (22) and the inner side wall of the box body (16-14), one end of the second compression spring (23) is fixedly connected with the second limiting plate (22), and the other end of the second compression spring (23) is fixedly connected with the inner side wall of the box body (16-14); the adjusting block (16-12) fixes the fifth sleeve (16-10), and simultaneously absorbs the impact force transmitted by the reverse compression force of the second compression spring (23) and the fifth sleeve (16-10);
when the installation frame body (5) is used for pouring the bridge pier (3), a reinforcement cage inside the installation frame body (5) and a reinforcement cage inside the bridge pier (3) are bound and fixed, and then concrete pouring is carried out on the whole body; when the box girder (1) is assembled, the box girder (1) on the left side is installed by external hoisting equipment, then the box girder (1) on the right side is hoisted, at the moment, a first limiting rod (16-6) and a second limiting rod (16-7) are pressed in the box girder (1) on the right side by a fourth sleeve (16-9), when a guide rod (16-2) is gradually inserted in the fifth sleeve (16-10), the first limiting rod (16-6) and the second limiting rod (16-7) continuously move leftwards under the action of a limiting ring (16-11), the fourth sleeve (16-9) is blocked by the limiting ring (16-11) until the first limiting rod (16-6) and the second limiting rod (16-7) are integrally exposed at the left end of the fifth sleeve (16-10), and under the reverse action of a tension spring (16-8), the angle between the first limiting rod (16-6) and the second limiting rod (16-7) is reduced, the second limiting rod (16-7) is clamped on the opening end on the left side of the fifth sleeve (16-10), and adjacent box beams (1) are connected and fastened; when the box girders (1) on the left side and the right side are subjected to external impact, the reverse compression force of the first compression spring (15) acts on the box girders (1), and when the first compression spring is compressed to the shortest, rigid tension is formed between the first sleeve (13) and the adjusting rod (11), so that the phenomenon of girder falling is prevented.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110048254.0A CN112832120B (en) | 2021-01-14 | 2021-01-14 | Chain bridge anti-falling device |
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| CN202110048254.0A CN112832120B (en) | 2021-01-14 | 2021-01-14 | Chain bridge anti-falling device |
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| CN112832120B true CN112832120B (en) | 2022-07-15 |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2636802B2 (en) * | 1995-06-08 | 1997-07-30 | 株式会社エスイー | Falling bridge prevention device |
| JPH10298923A (en) * | 1997-04-25 | 1998-11-10 | Takara Giken Kk | Fixture of strain parts for preventing bridge fall |
| JPH11269822A (en) * | 1998-03-23 | 1999-10-05 | Yokohama Rubber Co Ltd:The | Falling prevention device for bridge |
| JP2001040616A (en) * | 1999-07-29 | 2001-02-13 | Kobe Steel Ltd | Bridge falling preventive apparatus |
| JP5689699B2 (en) * | 2011-01-28 | 2015-03-25 | 悟 川上 | Fall bridge prevention device |
| JP5638981B2 (en) * | 2011-02-25 | 2014-12-10 | 株式会社横河ブリッジ | Fall-bridge prevention device and fall-bridge prevention structure |
| CN207003226U (en) * | 2017-07-24 | 2018-02-13 | 延安大学 | A kind of chain bridge anti-falling device |
| CN209760004U (en) * | 2018-10-31 | 2019-12-10 | 中交天津港湾工程设计院有限公司 | multidirectional bridge-falling-preventing limiting device |
| CN209243559U (en) * | 2018-12-19 | 2019-08-13 | 兰州工业学院 | A kind of fixed device of bridge earthquake resistance convenient for assembly |
| CN112049890B (en) * | 2020-09-08 | 2021-10-08 | 河北振创电子科技有限公司 | Bridge girder falling prevention device capable of balancing transverse bending moment |
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Address after: Building 1, No. 490 Hehe Avenue West, Genghe Town, Gaoming District, Foshan City, Guangdong Province, 528000 Patentee after: Guangdong Chuangsheng Intelligent Manufacturing Co.,Ltd. Address before: 528513 plant 12, No. 501, middle Gaoming Avenue, Yanghe Town, Gaoming District, Foshan City, Guangdong Province Patentee before: Guangdong Chuangsheng Metal Structure Co.,Ltd. |