Three-dimensional displacement boltless dustproof comb tooth type expansion joint

Abstract

The application discloses a dustproof boltless multidirectional displacement comb joint, which is composed of a secondary tooth plate, a dustproof rubber strip, a middle tooth plate, a stainless steel plate, a displacement amount storage box, a main tooth plate, a drainage system, a multidirectional displacement system, an anchoring plate, a chain support assembly and the like. The drainage system is independent of the joint bottom in the comb joint, can be independently installed, and the water stop belt can be replaced without damaging the pavement. The expansion joint is a multi-beam uniform distribution expansion control bridge expansion joint gap, which avoids the damage of the bridge expansion joint gap caused by the excessive bridge expansion, the damage to the tires of the passing vehicles and the traffic accidents, the boltless installation of the overall structure of the comb joint avoids the bridge damage and the driving safety caused by the bolt loosening, effectively releases the multidirectional displacement of the overall and all-around natural stress of the bridge, protects the bridge from damage, greatly improves the service life of the bridge, and reduces the maintenance cost of the expansion joint in the later period.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bridge structure and construction technology, in particular to three-dimensional displacement boltless dustproof comb tooth type expansion joint. BACKGROUND

[0002] In modern bridge construction, expansion joint device is an important component of the bridge, and the rationality of its performance structure design directly affects the bridge stability and service life, the comfort and safety in vehicle passing. However, due to the natural temperature change, vehicle load and main beam end displacement, and the correlation characteristics of thermal expansion and contraction of natural temperature, the conventional comb tooth type expansion joint has single function in design, adopts two plates of main tooth plate and secondary tooth plate, is fixed by bolts, has simple manufacturing process and easy installation procedure, and the bolt is easy to loosen. The maintenance route is long, and the natural environment affects the maintenance in time. The bridge comb tooth expansion joint has no sealing protection device between the expansion teeth and the teeth, and the highway garbage is easy to fall into. If the highway garbage cannot be cleaned in time, it will be blocked in the tooth gap of the comb tooth joint, affect the effective release of the accumulated energy of the thermal expansion and contraction displacement of the bridge natural temperature, and lose the expansion function due to many reasons such as the expansion of the bridge and the change of the degree of disorder. The expansion joint is deformed in many directions, the fixed bolt is loose and falls off, the function of the bridge comb tooth joint is limited, the comb tooth plate is lost, the bridge expansion device is damaged, the vehicle passing safety is greatly affected, and traffic accidents are easy to cause. Moreover, the later maintenance and replacement are extremely complex, the cleaning is difficult, the maintenance time is long, the settlement of the road surface and the pier is not balanced, one side of the comb tooth joint is raised, the transverse displacement of the beam plate also damages the comb tooth joint, causes inconvenience to driving safety, the uneven bridge surface is easy to cause major safety accidents, the repeated impact of the vehicle easily damages the normal use of the bridge main body, and further increases the maintenance and maintenance cost of the bridge expansion joint and the bridge support, reduces the service life of the bridge. SUMMARY

[0003] The technical problem solved by the present application is to provide a three-dimensional displacement boltless dustproof comb tooth type expansion joint, which is provided with a sealing dustproof device to effectively prevent foreign matters, sand and highway garbage from entering the comb tooth expansion joint and blocking the tooth gap, the comb tooth gap improves the original structure by adding a universal displacement device to realize the free displacement of the bridge in the upward and downward directions and the longitudinal and transverse directions of the bridge, a middle tooth plate and a central support beam are added to the middle position of the original two expansion tooth plates, a displacement sliding support and a displacement amount storage box device are added, a chain plate connecting device and a displacement sliding support are added to ensure the expansion of the gap, and the drainage system is improved to be realized by traction without damaging the pavement during replacement, and the original bolt loosening and loss installation method is changed to fixed installation by using an arc-shaped large anchor plate, thereby avoiding traffic accidents caused by bridge damage due to bolt loosening and nut loss of all conventional comb tooth gaps.

[0004] To solve the above technical problems, the technical scheme provided by the present application is as follows: a three-dimensional displacement boltless dustproof comb tooth type expansion joint, which comprises:

[0005] A fixed end secondary tooth plate, a middle tooth plate and an expansion end main tooth plate are arranged, the fixed end secondary tooth plate and the middle tooth plate are arranged on the two sides of the middle tooth plate, the middle tooth plate is provided with at least one, the junctions between the fixed end secondary tooth plate, the middle tooth plate and the expansion end main tooth plate are all wave-shaped comb tooth expansion joints, and the outer sides of the fixed end secondary tooth plate and the expansion end main tooth plate are both uniformly provided with a plurality of anchor plates.

[0006] A dustproof rubber strip is arranged in the wave-shaped comb tooth expansion joint between the fixed end secondary tooth plate and the expansion end main tooth plate or between the plurality of middle tooth plates, the two sides of the dustproof rubber strip are uniformly provided with fixed grippers, and the inner sides of the fixed end secondary tooth plate, the expansion end main tooth plate or the middle tooth plate are both provided with fixed holes matched with the fixed grippers.

[0007] A stainless steel plate is welded below the fixed end secondary tooth plate.

[0008] A displacement amount storage box is welded below the fixed end secondary tooth plate and the expansion end main tooth plate, the displacement amount storage box is provided with two displacement amount storage boxes located at the two ends of the dustproof rubber strip, a chain and a support beam are arranged at the middle part below the middle tooth plate, and the chain is used to connect the fixed end secondary tooth plate, the middle tooth plate and the expansion end main tooth plate.

[0009] A drainage system is composed of a fixed support, a fixed steel bar and a traction water stop belt, the fixed steel bar is U-shaped and is welded on the fixed support and used for anchoring, and the two sides of the traction water stop belt are slidably clamped in the C-shaped groove on the inner side of the fixed support, and a traction steel wire rope is arranged in the clamping position.

[0010] Further, the multi-directional displacement system comprises a concave fixing block, a connecting sleeve, a bolt, a fixing tube, a rotating shaft and a vertical shaft, the vertical shaft is installed in the reserved hole of the movable end of the telescopic end main tooth plate, one end of the concave fixing block is in the shape of a semicircle and is sleeved on the vertical shaft and locked by the nut at one end of the vertical shaft, the other end of the concave fixing block is perforated and connected with the connecting sleeve by the bolt, the fixing tube is welded on the fixed end of the telescopic end main tooth plate, and the rotating shaft passes through the fixing tube and the connecting sleeve arranged at intervals in sequence.

[0011] Further, the anchoring plate is provided with a steel bar hole corresponding to the steel bar.

[0012] Further, the vertical section shape of the dustproof rubber strip is multi-arched.

[0013] Further, the displacement amount storage box, the chain and the outer side of the multi-directional displacement system are additionally provided with protective boxes for preventing concrete erosion.

[0014] Further, the stainless steel plate is provided with a welded hole or an elastic active hole matched with the displacement amount storage box or the chain.

[0015] Further, the displacement amount storage box on one side comprises two side boxes and a cross beam, the two side boxes are welded at the lower parts of the fixed end secondary tooth plate and the telescopic end main tooth plate respectively, and the middle part of the cross beam is connected with the middle tooth plate through a support and a hanger.

[0016] Specifically, as shown in Figure 1 and Figure 2 , wherein the teeth of the comb tooth gap are in a wave shape, the dustproof rubber strip is installed in the middle of the wave-shaped teeth of the comb tooth gap, and the teeth are perforated at specific positions for installing the cylindrical handle of the dustproof rubber strip, the rubber strip is usually in a multi-arched shape, and the rubber strip has a vulcanized metal framework inside, so that the sandstone waste and other highway garbage can be effectively prevented from blocking the gap of the tooth plate. As the model of the comb tooth gap increases, the number of middle tooth plates will increase accordingly (as Figure 5 is one larger model, and other larger models are not listed one by one), and the middle tooth plate is similar to the middle beam of the modular expansion joint.

[0017] The displacement amount storage box is installed at both ends of the comb tooth gap in the width direction, the chain and the support beam structure are installed in the middle part, the displacement amount storage box has the same structure as the displacement box of the modular expansion joint, the two side boxes are welded on the main tooth plate and the secondary tooth plate respectively, the middle part of the cross beam is connected with the middle tooth plate through a support and a hanger, and the displacement amount storage box and the chain make the main tooth plate, the secondary tooth plate and the middle tooth plate of the comb tooth gap closely connected and integrated, which cannot be separated, so that the operation is more stable in actual telescopic displacement, and the control of the gap is more uniform. In addition, protective boxes are additionally installed outside the displacement amount storage box and the chain to prevent concrete erosion of the internal structure. The stainless steel plate is welded below the secondary tooth of the comb tooth plate, and the size of the stainless steel plate is mainly related to the model of the comb tooth gap.

[0018] The drainage system is composed of a fixed support and a pullable water stop belt, a U-shaped threaded fixing steel bar is welded to the fixed support of the water stop belt, and vulcanized traction steel wire ropes are arranged at both ends of the water stop belt. The drainage system exists independently of the comb tooth joint, is separately installed, and can be replaced by pulling the undamaged road surface after damage. The multidirectional displacement system is installed at the joint of the main tooth plate, is composed of a concave fixing block, a connecting sleeve, a bolt, a fixing pipe, a rotating shaft, a vertical shaft and a protection box, the vertical shaft is installed in the reserved hole of the movable end of the main tooth plate (the vertical shaft can also be installed at the fixed end, see Figure 6 ), the hole is welded, the concave fixing block is sleeved on the vertical shaft and locked by the nut below the vertical shaft, one end of the concave fixing block is semicircular, the other end is punched and connected with the connecting sleeve by a high-strength bolt, the fixing pipe is welded to the fixed end of the main tooth plate, and the rotating shaft penetrates through the fixing pipe and the connecting sleeve, so that the main tooth plate becomes an integral whole, and the protection box prevents concrete from eroding the multidirectional displacement assembly and provides a moving space for the multidirectional displacement of the comb tooth joint. The anchoring plate is welded to the comb tooth joint and is in the shape of an arch, and a through steel bar hole is further arranged, so that the through steel bar is inserted into the hole after the expansion joint is installed, and the expansion joint is more firmly gripped.

[0019] Compared with the prior art, the advantages of the present application are that:

[0020] 1. The dustproof rubber strip installed in the wave-shaped comb tooth expansion joint can expand and contract with the expansion joint, and the multi-arch dustproof rubber strip occupies as much space as possible under the same material condition, the dustproof rubber strip filled in the wave-shaped comb tooth expansion joint prevents sand, gravel waste and garbage on the road surface from entering the wave-shaped comb tooth expansion joint, and further prevents the sand, gravel waste and garbage from penetrating to the lower part of the joint, thereby achieving the effect of sand and dust prevention, reducing the labor and material resources for maintenance, reducing the impact of the wave-shaped comb tooth expansion joint on the service life of the bridge, and improving the practicality.

[0021] 2. The drainage system of the present application exists independently of the comb tooth joint, is stable in structure and can be separately installed, and can be replaced by pulling the undamaged road surface after damage, thereby greatly reducing the time of occupying the road and improving the maintenance efficiency.

[0022] 3. The multidirectional displacement system of the present application can realize vertical displacement through the rotation of the rotating shaft and the connecting sleeve, and can realize horizontal displacement through the connection of the connecting sleeve and the concave fixing block, and the conventional longitudinal displacement can be completed by relying on the joint. The conventional comb tooth joint can only realize longitudinal displacement, and once the bridge appears road surface settlement or transverse displacement, the comb tooth joint will be raised on one side or the tooth plates will be displaced with each other, and even the comb tooth will be broken, which seriously affects the expansion function. Therefore, the multidirectional displacement system can improve the application range of the expansion device and reduce a large number of avoidable disasters.

[0023] 4、The boltless installation of the present application adopts the arc-shaped large anchoring plate to fix the comb tooth gap, which avoids all kinds of disasters caused by bolt fracture, falling or failure, and the boltless installation is more firm, and the anti-seismic performance and stability are also better. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the structural schematic diagram of the present application.

[0025] Figure 2 is the structural schematic diagram of the present application.

[0026] Figure 3 is the vertical sectional structural schematic diagram of the multidirectional displacement system in the present application.

[0027] Figure 4 is the structural schematic diagram of the A section in the present application. Figure 3

[0028] Figure 5 is the combined schematic diagram of the plurality of middle tooth plates in the present application.

[0029] Figure 6 is another structural installation schematic diagram of the multidirectional displacement system in the present application.

[0030] Figure 7 is the structural schematic diagram of the dustproof rubber strip in the present application.

[0031] As shown in the figure: 1, fixed end secondary tooth plate; 2, dustproof rubber strip; 3, middle tooth plate; 4, stainless steel plate; 5, displacement amount storage box; 6, telescopic end main tooth plate; 7, drainage system; 8, multidirectional displacement system; 9, anchoring plate; 10, chain; 11, fixed gripper; 12, fixed support; 13, fixed steel bar; 14, traction water stop; 15, concave fixed block; 16, connecting sleeve; 17, bolt; 18, fixed pipe; 19, rotating shaft; 20, vertical shaft. DETAILED DESCRIPTION

[0032] ​In the description of the present application, it needs to be understood that the terms "center", "transverse", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can be explicitly or implicitly included one or more features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more. In addition, the term "includes" and any variation thereof is intended to cover non-exclusive inclusion.

[0033] The present application will be further described in detail below in conjunction with the drawings.

[0034] The present application is implemented in conjunction with the drawings Figure 1 and Figure 2 , vice tooth plate 1, dustproof rubber strip 2, middle tooth plate 3, stainless steel plate 4, displacement storage box 5, main tooth plate 6, drainage system 7, multi-direction displacement system 8, anchor plate 9, chain support assembly 10 and other components, anchor plate 9 is welded at both ends of vice tooth plate 1 and main tooth plate 6 respectively, is uniformly arranged, after the completion of the installation of the construction site, steel bars can also be inserted through the reinforcement holes, so that the comb tooth joint is more firm. The dustproof rubber strip 2 (as shown in Figure 7 ) is installed in the wave-shaped tooth gap between the main tooth plate 6 and the vice tooth plate 1 and the middle tooth plate 3, and there are a certain number of holes of a certain size on both sides of the tooth plate for installing the fixed handle of the dustproof rubber strip 2. The multi-arch type dustproof rubber strip 2 occupies as much space as possible under the same material, and the dustproof rubber strip 2 filled in the wave-shaped comb tooth expansion joint makes the sand and garbage on the road surface unable to enter the wave-shaped comb tooth expansion joint, and even more cannot drill into the lower part of the plate joint, thereby achieving the effect of dust and sand prevention, reducing the labor and material cost of maintenance.

[0035] The displacement storage box 5 and the chain 10 are welded below the comb tooth plate, and the outside is additionally provided with a protective box to prevent concrete from eroding the internal structure. The stainless steel plate 4 is welded below the vice tooth plate 1, and the size of the stainless steel plate is mainly related to the type of the comb tooth joint. In the part where the displacement storage box 5 and the chain 10 need to be connected with the comb tooth plate, corresponding holes should be reserved on the stainless steel plate for convenient welding and expansion.

[0036] The drainage system 7 is composed of a fixed support 12, a fixed steel bar 13 and a pullable water stop belt 14. The fixed steel bar 13 is welded on the fixed support 12 in a U shape and plays an anchoring role. The pullable water stop belt 14 has steel wires in the rubber inside at both ends. The presence of the steel wires makes the whole rubber strip stronger and more flexible, and the pulling machine is more uniform in stress when pulling. The fixed support is a special-shaped steel processed by a professional machine. After the rubber strip is pulled into the C-shaped groove, it cannot come out, thereby playing a waterproof role.

[0037] Finally, it is a multi-directional displacement system 8 (as shown in Figure 3 and Figure 4 ), which is composed of a concave fixing block 15, a connecting sleeve 16, a bolt 17, a fixed tube 18, a rotating shaft 19, a vertical shaft 20 and a protective box. The vertical shaft 20 is installed in the reserved hole of the movable end of the main tooth plate and is welded with the hole. The concave fixing block 15 is sleeved on the vertical shaft 20 and is locked by the nut below the vertical shaft. One end of the concave fixing block 15 is semicircular, and the other end is connected with the connecting sleeve 16 by the high-strength bolt 17. The fixed tube 18 is welded on the fixed end of the main tooth plate. The rotating shaft 19 passes through the fixed tube 18 and the connecting sleeve 16, so that the main tooth plate becomes a whole. The protective box prevents concrete from eroding the multi-directional displacement assembly and provides a moving space for the multi-directional displacement of the comb joint. The above is the main structure of the embodiment of the present application.

[0038] The main working principle of the present application is that the comb joint completely removes the bolt and is fixed by using an anchoring plate, thereby solving the damage caused by the loosening or falling of the bolt of the ordinary comb joint. The waveform tooth and the multi-directional displacement system enable the comb joint to displace in the vertical direction, the longitudinal direction and the transverse direction and to reset. The drainage system independently operates and can be independently installed by pulling without damaging the pavement. The dustproof rubber strip is a multi-arch rubber strip embedded in the hole of the comb joint by the cylindrical rubber block at both sides and seals the hole surface after installation to prevent falling. The multi-arch rubber strip occupies as much space as possible under the premise of occupying as little material as possible, so that the sand, stone waste and garbage of the pavement cannot enter the gap between the teeth of the comb joint, thereby playing a dustproof role.

[0039] The above describes the present application and its embodiments, which are not limited. The embodiment shown in the drawings is only one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby and designs a similar structure and embodiment without departing from the purpose of the present application, it should belong to the protection scope of the present application.

Claims

1. A three-dimensional displacement boltless dustproof comb-tooth expansion joint, characterized in that, It includes: The fixed end auxiliary tooth plate (1), the middle tooth plate (3) and the telescopic end main tooth plate (6) are respectively arranged on both sides of the middle tooth plate (3). At least one middle tooth plate (3) is provided. The junction between the fixed end auxiliary tooth plate (1), the middle tooth plate (3) and the telescopic end main tooth plate (6) are all corrugated comb tooth expansion joints. Several anchor plates (9) are evenly arranged on the outer side of the fixed end auxiliary tooth plate (1) and the telescopic end main tooth plate (6). Dustproof rubber strip (2), the dustproof rubber strip (2) is filled in the corrugated comb expansion joint between the fixed end auxiliary tooth plate (1) and the telescopic end main tooth plate (6), or between several middle tooth plates (3), the dustproof rubber strip (2) is evenly provided with fixed grippers (11) on both sides, and the fixed end auxiliary tooth plate (1) or the telescopic end main tooth plate (6) or the middle tooth plate (3) is provided with fixing holes that cooperate with the fixed grippers (11) on the inner side; the vertical cross-section shape of the dustproof rubber strip (2) is multi-arched; Stainless steel plate (4), said stainless steel plate (4) is welded to the underside of fixed end auxiliary tooth plate (1); Displacement storage box (5), the displacement storage box (5) is welded below the fixed end auxiliary tooth plate (1) and the telescopic end main tooth plate (6), the displacement storage box (5) is provided in two places respectively located at both ends of the dustproof rubber strip (2), a chain (10) and a support beam are provided in the middle part below the middle tooth plate (3), the chain (10) is used to connect the fixed end auxiliary tooth plate (1), the middle tooth plate (3) and the telescopic end main tooth plate (6); The drainage system (7) consists of a fixed bracket (12), a fixed reinforcing bar (13), and a pullable waterstop (14). The fixed reinforcing bar (13) is U-shaped and welded to the fixed bracket (12) for anchoring. The two sides of the pullable waterstop (14) are slidably engaged in the C-shaped groove inside the fixed bracket (12), and a traction steel wire rope is built into the engagement point. A multi-directional displacement system (8) includes a concave fixing block (15), a connecting sleeve (16), a bolt (17), a fixing tube (18), a rotating shaft (19), and a vertical shaft (20). The vertical shaft (20) is installed in a reserved hole at the movable end of the telescopic main tooth plate (6). One end of the concave fixing block (15) is semi-circular and sleeved on the vertical shaft (20), and locked by a nut at one end of the vertical shaft (20). The other end of the concave fixing block (15) is drilled and connected to the connecting sleeve (16) by a bolt (17). The fixing tube (18) is welded to the fixed end of the telescopic main tooth plate (6). The rotating shaft (19) passes through the spaced fixing tube (18) and the connecting sleeve (16) in sequence.

2. The three-dimensional displacement boltless dustproof comb-type expansion joint according to claim 1, characterized in that: The anchor plate (9) is provided with corresponding through holes for inserting and fixing reinforcing bars.

3. The three-dimensional displacement boltless dustproof comb-type expansion joint according to claim 1, characterized in that: The displacement storage box (5), chain (10) and multi-directional displacement system (8) are all fitted with protective boxes to prevent concrete erosion.

4. The three-dimensional displacement boltless dustproof comb-type expansion joint according to claim 1, characterized in that: The stainless steel plate (4) is provided with welding holes or telescopic holes that cooperate with the displacement storage box (5) or chain (10).

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