Prefabricated steel bridge installation reinforcing device

Abstract

The utility model relates to a prefabricated steel bridge installation reinforcing device, and belongs to the technical field of steel bridge maintenance. Comprising a tail end stop lever, an end connecting rod, a screw rod, a first sliding rod and a second sliding rod, the first sliding rod and the second sliding rod are parallel to each other, the two ends of the tail end stop lever are connected with the tail ends of the first sliding rod and the second sliding rod respectively, and the two ends of the end connecting rod are connected with the head ends of the first sliding rod and the second sliding rod respectively; a first check block and a second check block are arranged in the rectangular frame structure in a spaced mode, the threaded rod penetrates through the end connecting rod and then abuts against the end of the second check block, a threaded hole matched with the threaded rod is formed in the end connecting rod, an inserting hole is formed in the head end of the threaded rod, and a rotating rod detachably connected with the threaded rod is inserted into the inserting hole. The method has the beneficial effects that cracks are promoted to be in a closed or close state, continuous cracking of the cracks is prevented, the cracks are recovered to the state before continuous cracking, and the bearing capacity and the anti-fatigue capacity of the steel bridge plate are improved.

Description

Technical Field

[0001] The utility model relates to a prefabricated steel bridge installation reinforcement device, belonging to the technical field of steel bridge maintenance. Background Art

[0002] Prefabricated steel bridges have the characteristics of simple structure, lightweight components, easy transportation, flexible assembly, quick erection, easy disassembly and assembly, and reusable components. They also have the advantages of large load-bearing capacity, strong structural rigidity, and long fatigue life. They play an important role in military transportation, disaster relief, national defense construction, water conservancy projects, road traffic and other fields at home and abroad, and are widely used.

[0003] Patent number CN202122517701.0 discloses a prefabricated, assembled bridge. It comprises: piers arranged in groups along the bridge's length; cap beams, correspondingly mounted on the piers and integrally formed with them; small box beams, arranged transversely and fixed to the cap beams. Each small box beam comprises a prefabricated open-channel beam and a prefabricated top plate, which is mounted and fixed to the prefabricated open-channel beam and has several metal parts pre-embedded and connected to the prefabricated top plate; and a bridge deck, comprising several composite slabs connected in sequence along the bridge's length, tied steel bars, and a cast-in-place concrete layer on the composite slabs. The composite slabs are provided with positioning holes and are mounted on the small box beams.

[0004] Current technologies are incomplete and suffer from the following drawbacks: Domestic and international engineering experience shows that most steel bridges subjected to heavy traffic loads experience fatigue failure in their steel decks after several or even more than a decade of service. Therefore, addressing fatigue cracking in steel bridge decks is imperative. Traditional reinforcement methods for fatigue cracking in steel bridges require interrupting traffic, are costly, and result in numerous secondary fatigue failures, resulting in ineffective reinforcement.

[0005] In order to solve one of the above problems, a prefabricated steel bridge installation reinforcement device is urgently needed. Utility Model Content

[0006] In view of the above deficiencies in the existing technology, the technical problem to be solved by the present invention is: how to enable the operator to use a rotary rod to drive the screw to rotate, wait for the screw to be tightly pressed against the second stop block, compress the distance between the first stop block and the second stop block, and cause the crack to be in a closed or close to closed state, prevent the crack from continuing to crack and restore the crack to the state before continuing to crack. For this purpose, a prefabricated steel bridge installation reinforcement and strengthening device is provided.

[0007] The prefabricated steel bridge installation reinforcement and strengthening device described in the utility model is characterized in that it includes a tail end stop rod, an end connecting rod, a screw and a first sliding rod and a second sliding rod parallel to each other, the two ends of the tail end stop rod are respectively connected to the tail ends of the first sliding rod and the second sliding rod, the two ends of the end connecting rod are respectively connected to the head ends of the first sliding rod and the second sliding rod, the first sliding rod, the second sliding rod, the first sliding sleeve and the second sliding sleeve form a rectangular frame structure, the rectangular frame structure has a first stop block and a second stop block set at intervals, the screw passes through the end connecting rod and abuts against the end of the second stop block, the end connecting rod is provided with a threaded hole matching the screw, the head end of the screw is provided with a socket, and a rotating rod detachably connected to the screw is inserted into the socket.

[0008] Most steel bridges that bear heavy traffic loads will experience fatigue failure on their steel bridge decks after several years or even more than ten years of use, and cracks will appear on the steel bridge decks.

[0009] This device is a factory prefabricated part. First, the first sliding rod, the second sliding rod, the tail end stop rod, and the end connecting rod are processed, and a threaded hole for the screw rod is processed on the end connecting rod. Then, the first sliding sleeve and the second sliding sleeve are respectively mounted on the first sliding rod and the second sliding rod. Then, the first sliding rod and the second sliding rod are respectively welded to the tail end stop rod and the end connecting rod. Finally, the screw rod is installed on the end connecting rod.

[0010] When using this device, it is necessary to weld the first stopper and the second stopper on the steel bridge plate on both sides of the crack respectively, and weld the first sliding sleeve and the second sliding sleeve on the steel bridge plate respectively, the first stopper is close to the tail end stop rod, and then the rotary rod is inserted into the socket at the end of the screw rod. The operator uses the rotary rod to drive the screw rod to rotate, and each rotation angle is 180 degrees. Therefore, it is necessary to insert and remove the rotary rod multiple times and change the position of the rotary rod to continuously drive the screw rod to rotate. When the screw rod is tightly pressed against the second stopper, the distance between the first stopper and the second stopper is compressed, so as to force the crack to be in a closed or nearly closed state, prevent the crack from continuing to crack and restore the crack to the state before continuing to crack, thereby improving the bearing capacity and fatigue resistance of the steel bridge plate.

[0011] Preferably, a locking nut is threadedly connected to the screw, and the side of the locking nut is abutted against the side of the end connecting rod. Finally, the screw is locked to the end connecting rod using the locking nut, and the first sliding rod and the second sliding rod are welded to the first sliding sleeve and the second sliding sleeve respectively to achieve overall stability and prevent the crack from further cracking.

[0012] Preferably, the first sliding rod and the second sliding rod are both rectangular steel tubes, the cross-sections of the inner holes of the first sliding sleeve and the second sliding sleeve are both rectangular, and they slide relative to the outer walls of the first sliding rod and the second sliding rod respectively.

[0013] Preferably, the outer surface of the first stopper has a stop edge.

[0014] Preferably, the first sliding rod, the second sliding rod and the tail end stop rod are formed by welding.

[0015] Preferably, the first sliding rod, the second sliding rod and the end connecting rod are formed by welding.

[0016] Preferably, after the first sliding sleeve and the second sliding sleeve are adjusted into place, the first sliding sleeve and the second sliding sleeve are welded to the first sliding rod and the second sliding rod respectively.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In the prefabricated steel bridge installation reinforcement and strengthening device described in the present invention, the operator uses a rotary rod to drive the screw to rotate, and when the screw is pressed against the second block, the distance between the first block and the second block is compressed, causing the crack to be in a closed or nearly closed state, preventing the crack from continuing to crack and restoring the crack to the state before continuing to crack, thereby improving the bearing capacity and fatigue resistance of the steel bridge plate.

[0019] The prefabricated steel bridge installation reinforcement and strengthening device described in the utility model uses a locking nut to lock the screw rod with the end connecting rod, and the first sliding rod and the second sliding rod are welded to the first sliding sleeve and the second sliding sleeve respectively to achieve overall stability and prevent cracks from continuing to crack.

[0020] The prefabricated steel bridge installation reinforcement and strengthening device described in the utility model can have components that can be transported to the site for assembly installation after being manufactured in the factory, which has low cost, fast construction speed and little interference with traffic. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 This is a structural diagram of the retaining edge of the utility model;

[0024] Figure 3 This is a diagram of the usage state of the utility model.

[0025] In the figure: 1, first sliding rod 2, second sliding rod 3, first sliding sleeve 4, second sliding sleeve 5, tail end stop rod 6, end connecting rod 7, first stop block 8, second stop block 9, screw rod 10, locking nut 11, socket 12, rotating rod 13, stop edge 14, crack 15, steel bridge plate. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings: The present invention will be further illustrated below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0027] Example 1, as Figure 1 and Figure 3 As shown, a prefabricated steel bridge installation reinforcement and strengthening device includes a tail end stop rod 5, an end connecting rod 6, a screw rod 9 and a first slide rod 1 and a second slide rod 2 parallel to each other, the two ends of the tail end stop rod 5 are respectively connected to the tail ends of the first slide rod 1 and the second slide rod 2, the two ends of the end connecting rod 6 are respectively connected to the head ends of the first slide rod 1 and the second slide rod 2, the first slide rod 1, the second slide rod 2, the first sliding sleeve 3 and the second sliding sleeve 4 form a rectangular frame structure, the rectangular frame structure is provided with a first stop block 7 and a second stop block 8 arranged at intervals, the screw rod 9 passes through the end connecting rod 6 and abuts against the end of the second stop block 8, a threaded hole is provided on the end connecting rod 6 to cooperate with the screw rod 9, the head end of the screw rod 9 is provided with a socket 11, and a rotating rod 12 detachably connected to the screw rod 9 is inserted into the socket 11.

[0028] This device is a factory prefabricated part. First, the first sliding rod 1, the second sliding rod 2, the tail end stop rod 5, and the end connecting rod 6 are processed, and a threaded hole for the screw 9 is processed on the end connecting rod 6. Secondly, the first sliding sleeve 3 and the second sliding sleeve 4 are respectively mounted on the first sliding rod 1 and the second sliding rod 2. Then, the first sliding rod 1 and the second sliding rod 2 are respectively welded to the tail end stop rod 5 and the end connecting rod 6. Finally, the screw 9 is installed on the end connecting rod 6.

[0029] When this device is used, it is necessary to weld the first stop block 7 and the second stop block 8 on the steel bridge plate 15 on both sides of the crack 14 respectively, and weld the first slide sleeve 3 and the second slide sleeve 4 on the steel bridge plate 15 respectively, and the first stop block 7 is close to the tail end stop rod 5, and then the rotary rod 12 is inserted into the socket 11 at the end of the screw 9. The operator uses the rotary rod 12 to drive the screw 9 to rotate, and each rotation angle is 180 degrees. Therefore, it is necessary to insert and remove the rotary rod 12 multiple times and change the position of the rotary rod 12 to continuously drive the screw 9 to rotate. When the screw 9 is tightly pressed against the second stop block 8, the distance between the first stop block 7 and the second stop block 8 is compressed, so that the crack is in a closed or close to closed state, preventing the crack from continuing to crack and restoring the crack to the state before continuing to crack, thereby improving the bearing capacity and fatigue resistance of the steel bridge plate.

[0030] Example 2, as Figure 1-3 As shown, a prefabricated steel bridge installation reinforcement and strengthening device includes a tail end stop rod 5, an end connecting rod 6, a screw rod 9 and a first slide rod 1 and a second slide rod 2 parallel to each other, the two ends of the tail end stop rod 5 are respectively connected to the tail ends of the first slide rod 1 and the second slide rod 2, the two ends of the end connecting rod 6 are respectively connected to the head ends of the first slide rod 1 and the second slide rod 2, the first slide rod 1, the second slide rod 2, the first sliding sleeve 3 and the second sliding sleeve 4 form a rectangular frame structure, the rectangular frame structure is provided with a first stop block 7 and a second stop block 8 arranged at intervals, the screw rod 9 passes through the end connecting rod 6 and abuts against the end of the second stop block 8, a threaded hole is provided on the end connecting rod 6 to cooperate with the screw rod 9, the head end of the screw rod 9 is provided with a socket 11, and a rotating rod 12 detachably connected to the screw rod 9 is inserted into the socket 11.

[0031] Furthermore, a locking nut 10 is threadedly connected to the screw 9, and the side of the locking nut 10 is abutted against the side of the end connecting rod 6. Finally, the screw 9 is locked to the end connecting rod 6 using the locking nut 10, and the first sliding rod 1 and the second sliding rod 2 are welded to the first sliding sleeve 3 and the second sliding sleeve 4 respectively, achieving overall stability and preventing the crack from further cracking.

[0032] Furthermore, the first slide bar 1 and the second slide bar 2 are both rectangular steel tubes, the cross-sections of the inner holes of the first slide sleeve 3 and the second slide sleeve 4 are both rectangular, and they slide relative to the outer walls of the first slide bar 1 and the second slide bar 2 respectively.

[0033] Furthermore, the outer surface of the first stopper 7 has a stop edge 13 .

[0034] Furthermore, the first sliding rod 1 , the second sliding rod 2 and the tail end blocking rod 5 are formed by welding.

[0035] Furthermore, the first sliding rod 1 , the second sliding rod 2 and the end connecting rod 6 are welded together.

[0036] Furthermore, after the first sliding sleeve 3 and the second sliding sleeve 4 are adjusted into place, the first sliding sleeve 3 and the second sliding sleeve 4 are welded to the first sliding rod 1 and the second sliding rod 2 respectively.

[0037] In the prefabricated steel bridge installation reinforcement and strengthening device described in the present invention, the operator uses a rotary rod to drive the screw to rotate, and when the screw is pressed against the second block, the distance between the first block and the second block is compressed, causing the crack to be in a closed or nearly closed state, preventing the crack from continuing to crack and restoring the crack to the state before continuing to crack, thereby improving the bearing capacity and fatigue resistance of the steel bridge plate.

[0038] The prefabricated steel bridge installation reinforcement and strengthening device described in the utility model uses a locking nut to lock the screw rod with the end connecting rod, and the first sliding rod and the second sliding rod are welded to the first sliding sleeve and the second sliding sleeve respectively to achieve overall stability and prevent cracks from continuing to crack.

[0039] The prefabricated steel bridge installation reinforcement and strengthening device described in the utility model can have components that can be transported to the site for assembly installation after being manufactured in the factory, which has low cost, fast construction speed and little interference with traffic.

[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

[0041] Any matters not described in detail in the present invention are well-known technologies to those skilled in the art.

Claims

1. A prefabricated steel bridge installation reinforcement device, characterized by: The lockhole that is formed on the linking rod is formed on the first end of the swinging rod and the second end of the swinging rod is fixedly provided with a toothed connecting strip which is cooperatively connected with the toothed connecting strip.

2. The prefabricated steel bridge installation reinforcement device according to claim 1 is characterized in that: The first sliding rod and the second sliding rod are both rectangular steel tubes. The cross sections of the inner holes of the first sliding sleeve and the second sliding sleeve are both rectangular, and they slide relative to the outer walls of the first sliding rod and the second sliding rod respectively.

3. The prefabricated steel bridge installation reinforcement device according to claim 2 is characterized in that: The outer surface of the first stopper has a stop edge.

4. The prefabricated steel bridge installation reinforcement device according to claim 3 is characterized in that: The first sliding rod, the second sliding rod and the tail end blocking rod are formed by welding.

5. The prefabricated steel bridge installation reinforcement device according to claim 4 is characterized in that: The first sliding rod, the second sliding rod and the end connecting rod are welded into shape.

6. The prefabricated steel bridge installation reinforcement device according to claim 5 is characterized in that: After the first sliding sleeve and the second sliding sleeve are adjusted into place, the first sliding sleeve and the second sliding sleeve are welded to the first sliding rod and the second sliding rod respectively.

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