Simulation pre-splicing device for in-plant machining of large-span variable-cross-section steel box girder

Abstract

The utility model provides a large-span variable-cross-section steel box girder in-plant machining simulation pre-splicing device, and relates to the field of steel box girders. The large-span variable-cross-section steel box girder in-plant machining simulation pre-splicing device comprises a hardened foundation and a steel box girder, a plurality of lifting mechanisms for lifting the steel box girder are arranged above the hardened foundation, each lifting mechanism comprises a supporting plate, a connecting block and a connecting rope, a moving mechanism for moving the steel box girder is arranged outside the hardened foundation, and the steel box girder is arranged in the moving mechanism. The moving mechanism comprises a supporting cross beam and a supporting column, and a fixing mechanism for fixing the steel box girder is arranged on the surface of the supporting cross beam. According to the in-plant machining simulation pre-splicing device for the large-span variable-cross-section steel box girder, the supporting plates and the connecting blocks are connected together through the connecting ropes, jig frames of different shapes are formed through the supporting plates and the connecting blocks so as to adapt to steel box girders of different specifications, the jig frame erecting difficulty is lowered, and the working efficiency is improved. In-plant simulation pre-assembly tests can be carried out on large-span steel box girders with different sections, and the production efficiency of the steel box girders is improved.

Description

Technical Field

[0001] The utility model relates to an in-plant pre-assembly device for a variable-section steel box girder, in particular to an in-plant processing simulation pre-assembly device for a large-span variable-section steel box girder, belonging to the technical field of steel box girders. Background Art

[0002] Steel box girder, also called steel plate box girder, is a common structural form for long-span bridges. It is generally used in bridges with large spans. It is called steel box girder because of its box-like appearance. In large-span cable-supported bridges, the span of steel box main beams can reach hundreds of meters or even thousands of meters. It is generally manufactured and installed in several beam sections, and its cross section has wide and flat appearance characteristics.

[0003] The utility model with patent number CN219260754U discloses a transverse movement device used for erecting prefabricated box girders for widening bridges, including a support frame, the upper end of the support frame is fixedly connected to a second connecting frame, the second connecting frame is fixedly connected to a plurality of triangular reinforcing ribs of the same size, the upper end of the triangular reinforcing ribs is fixedly connected to a first connecting frame, a slide groove is provided inside the first connecting frame, and a hydraulic cylinder is fixedly connected to an inner end of the slide groove. By arranging a plurality of triangular reinforcing ribs and a fixed frame, the stability of the transverse movement device for erecting prefabricated box girders for widening bridges can be ensured, and at the same time, the entire movable seat assembly can be driven to move under the action of the hydraulic cylinder and the slider, thereby realizing the transverse movement of the erection assembly, and the pulley and slide rail at the bottom can ensure the stability of the entire erection assembly during movement.

[0004] Due to the influence of transportation conditions, large-span variable-section steel box girder structural components need to be manufactured in sections, and then pre-assembled in the factory. After passing the inspection, they are disassembled and transported to the construction site. Although the device in the above patent improves the stability during lateral movement, due to the different bridge types of steel box girders of each bridge, this method requires the construction of the cradle each time according to the different bridge types, which is difficult to adapt to the pre-assembly operations of different steel box girder bridge types. For this reason, we provide a large-span variable-section steel box girder factory processing simulation pre-assembly device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a large-span variable-section steel box girder in-factory processing simulation pre-assembly device in order to solve the above-mentioned problem, so as to solve the problem that the tire frame in the comparative document is difficult to adapt to steel box girders of different specifications.

[0006] Technical Solution

[0007] The utility model is realized through the following technical scheme: a large-span variable-section steel box girder in-factory processing simulation pre-assembly device.

[0008] It includes a hardened foundation and a steel box girder. A plurality of lifting mechanisms for lifting the steel box girder are arranged above the hardened foundation. The lifting mechanisms include support plates, connecting blocks and connecting ropes. A moving mechanism for moving the steel box girder is arranged outside the hardened foundation. The moving mechanism includes a supporting beam and a supporting column. A fixing mechanism for fixing the steel box girder is arranged on the surface of the supporting beam. The fixing mechanism includes a second guide rail and a mounting plate.

[0009] Preferably, a hydraulic push rod is fixedly connected to the surface of the hardened foundation, and the output end of the hydraulic push rod is hinged to the support plate, and an anti-slip ring is fixedly connected to the surface of the connecting block, and the support plate is driven to move upward through the hydraulic push rod.

[0010] Preferably, one end of the connecting rope is fixedly connected to the connecting block, and the end of the connecting rope away from the connecting block passes through the support plate and is slidably connected to the support plate, a telescopic spring is fixedly connected to the inside of the support plate, and the other end of the telescopic spring is fixedly connected to the connecting rope, the telescopic spring provides a certain buffering capacity for the connecting rope, and the support plate and the connecting block are connected together through the telescopic spring connecting rope.

[0011] Preferably, a connecting cross bar is fixedly connected to the surface of the support column, and the top end of the connecting cross bar is fixedly connected to the supporting cross beam, and the supporting cross beam is supported and fixed by connecting the cross bar and the support column.

[0012] Preferably, a first guide rail is provided below the support column, a first slider is slidably connected to the surface of the first guide rail, and the first slider is fixedly connected to the support column, and the position of the support column is adjusted through the first guide rail and the first slider so that the supporting beam can drive the steel box beam to move.

[0013] Preferably, the bottom end of the first sliding block is rotatably connected to a first power wheel, and the surface of the first power wheel is transmission-connected to the first guide rail, so that the first sliding block is driven to move along the first guide rail through the first power wheel.

[0014] Preferably, the second guide rail is fixedly connected to the supporting beam, the surface of the second guide rail is slidably connected to the second slider, the top end of the second slider is rotatably connected to the second power wheel, and the second power wheel is transmission-connected to the second guide rail, and the position of the second slider is fixed by the second guide rail.

[0015] Preferably, a winch is fixedly connected to the surface of the second slider, a steel cable is fixedly connected to the output end of the winch, and the bottom end of the steel cable is fixedly connected to a mounting plate, and the mounting plate is fixedly connected to the surface of the steel box girder. The steel cable is retracted and released by the winch, so that the mounting plate drives the steel box girder to rise or fall.

[0016] The utility model provides a large-span variable-section steel box girder in-plant processing simulation pre-assembly device, which has the following beneficial effects:

[0017] The large-span variable-section steel box girder in-factory processing simulation pre-assembly device connects the support plate and the connection block together through a connecting rope, and forms tire frames of different shapes through the support plate and the connection block to adapt to steel box girders of different specifications, thereby reducing the difficulty of tire frame erection, facilitating the pre-assembly of the steel box girder, and improving the efficiency of simulation pre-assembly in the processing plant. The completed steel box girder is moved laterally to the top of the hardened foundation through the crossbeam and the support column, which facilitates the pre-assembly of the steel box girder. The position of the steel box girder on the surface of the supporting crossbeam is adjusted through the second guide rail, which facilitates the placement of the steel box girder on the top of the overlapped tire frame. The large-span steel box girders with different cross sections can be subjected to in-factory simulation pre-assembly tests, thereby improving the production efficiency of the steel box girder.

[0018] The large-span variable-section steel box girder factory-processed simulation pre-assembly device drives the support plate to move upward through the hydraulic push rod, and controls different hydraulic push rods through an external controller to move different heights to lift the support plate to the specified position. The anti-slip ring increases the friction between the connecting block and the steel box girder, thereby improving the device's ability to fix the steel box girder. The telescopic spring provides a certain buffering capacity for the connecting rope, and the telescopic spring connecting rope is used to connect the support plate and the connecting block together, so that the support plate and the connecting block form a grid that supports the steel box girder.

[0019] The large-span variable-section steel box girder factory-processed simulation pre-assembly device improves the support and fixation of the supporting crossbeam by connecting the crossbar and the support column. The position of the support column is adjusted through the first guide rail and the first slider, so that the supporting crossbeam can drive the steel box girder to move. The first power wheel can be controlled to rotate by the electric motor, and the first power wheel can drive the first slider to move along the first guide rail. The second guide rail can fix the position of the second slider, and the second power wheel can drive the second slider to move on the surface of the second guide rail. The steel cable is retracted and released by the winch, so that the mounting plate drives the steel box girder to rise or fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the lifting mechanism structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the fixing mechanism structure of the utility model;

[0023] Figure 4 For this utility model Figure 1 A-section structure enlarged view.

[0024]

Main component symbol description

[0025] 1. Hardened foundation; 2. Steel box girder;

[0026] 3. Lifting mechanism; 301. Support plate; 302. Connecting block; 303. Anti-slip ring; 304. Connecting rope; 305. Telescopic spring; 306. Hydraulic push rod;

[0027] 4. Moving mechanism; 401. Supporting beam; 402. Connecting crossbar; 403. Supporting column; 404. First guide rail; 405. First slider; 406. First power wheel;

[0028] 5. Fixing mechanism; 501. Second guide rail; 502. Second slider; 503. Winch; 504. Steel cable; 505. Mounting plate; 506. Second power wheel. DETAILED DESCRIPTION

[0029] The embodiment of the utility model provides a device for in-factory processing simulation pre-assembly of a large-span variable-section steel box girder.

[0030] See also Figure 1 and Figure 2 , including a hardened foundation 1 and a steel box girder 2. A plurality of lifting mechanisms 3 for lifting the steel box girder 2 are arranged above the hardened foundation 1. The lifting mechanisms 3 include a support plate 301, a connecting block 302 and a connecting rope 304. The support plate 301 and the connecting block 302 are connected together by the connecting rope 304. Different shapes of tire frames are formed by the support plate 301 and the connecting block 302 to adapt to steel box girders 2 of different specifications, thereby reducing the difficulty of setting up the tire frames, facilitating the pre-assembly operation of the steel box girder 2, and improving the efficiency of simulated pre-assembly in the processing plant.

[0031] A hydraulic push rod 306 is fixedly connected to the surface of the hardened foundation 1, and the output end of the hydraulic push rod 306 is hinged to the support plate 301. An anti-slip ring 303 is fixedly connected to the surface of the connecting block 302. The hydraulic push rod 306 is used to drive the support plate 301 to move upward. Different hydraulic push rods 306 are controlled by an external controller to move to different heights to lift the support plate 301 to a specified position. The anti-slip ring 303 is used to increase the friction between the connecting block 302 and the steel box girder 2, thereby improving the device's ability to fix the steel box girder 2.

[0032] One end of the connecting rope 304 is fixedly connected to the connecting block 302, and the end of the connecting rope 304 away from the connecting block 302 passes through the support plate 301 and is slidably connected to the support plate 301. A telescopic spring 305 is fixedly connected to the inside of the support plate 301, and the other end of the telescopic spring 305 is fixedly connected to the connecting rope 304. The telescopic spring 305 provides a certain buffering capacity for the connecting rope 304. The telescopic spring 305 connects the rope 304 to connect the support plate 301 and the connecting block 302, so that the support plate 301 and the connecting block 302 form a grid supporting the steel box girder 2. By combining several support plates 301 and connecting blocks 302, a tire frame of specific specifications is formed, which reduces the difficulty of building the tire frame and improves the efficiency of pre-assembly of the steel box girder 2.

[0033] The hydraulic push rod 306 is a prior art, and the detailed parameters and models thereof will not be described in detail in this application.

[0034] Please refer again Figure 1 and Figure 4 A moving mechanism 4 for moving the steel box girder 2 is arranged outside the hardened foundation 1. The moving mechanism 4 includes a supporting crossbeam 401 and a supporting column 403. Through the crossbeam 401 and the supporting column 403, the completed steel box girder 2 is moved laterally to the top of the hardened foundation 1, so as to facilitate the pre-assembly operation of the steel box girder 2.

[0035] The surface of the support column 403 is fixedly connected with a connecting crossbar 402 , and the top end of the connecting crossbar 402 is fixedly connected to the supporting crossbeam 401 . By connecting the crossbar 402 and the support column 403 , the supporting crossbeam 401 is more supported and fixed.

[0036] A first guide rail 404 is provided below the support column 403, and a first slider 405 is slidably connected to the surface of the first guide rail 404, and the first slider 405 is fixedly connected to the support column 403. The position of the support column 403 is adjusted through the first guide rail 404 and the first slider 405, so that the support beam 401 can drive the steel box beam 2 to move.

[0037] The bottom end of the first slider 405 is rotatably connected to the first power wheel 406, and the surface of the first power wheel 406 is transmission-connected to the first guide rail 404. An electric motor is arranged inside the first power wheel 406, and the rotation of the first power wheel 406 can be controlled by the motor. The first power wheel 406 drives the first slider 405 to move along the first guide rail 404.

[0038] The first power wheel 406 is a prior art, and this application will not go into details about its detailed parameters and models.

[0039] See also Figure 3The surface of the supporting beam 401 is provided with a fixing mechanism 5 for fixing the steel box beam 2. The fixing mechanism 5 includes a second guide rail 501 and a mounting plate 505. The steel box beam 2 is fixed by the mounting plate 505. The position of the steel box beam 2 on the surface of the supporting beam 401 is adjusted by the second guide rail 501, so that the steel box beam 2 can be placed on top of the overlapped tire frame conveniently.

[0040] The second guide rail 501 is fixedly connected to the supporting beam 401, and the second slider 502 is slidably connected to the surface of the second guide rail 501. The top of the second slider 502 is rotatably connected to the second power wheel 506, and the second power wheel 506 is transmission-connected to the second guide rail 501. The position of the second slider 502 is fixed by the second guide rail 501, and the second slider 502 is driven to move on the surface of the second guide rail 501 by the second power wheel 506.

[0041] A winch 503 is fixedly connected to the surface of the second slider 502, a steel cable 504 is fixedly connected to the output end of the winch 503, and the bottom end of the steel cable 504 is fixedly connected to a mounting plate 505, and the mounting plate 505 is fixedly connected to the surface of the steel box girder 2. The winch 503 retracts and releases the steel cable 504, so that the mounting plate 505 drives the steel box girder 2 to rise or fall.

[0042] The winch 503 and the second power wheel 506 are prior art, and this application will not go into details about their detailed parameters and models.

[0043] When the utility model is in use: different hydraulic push rods 306 are controlled by an external controller to move different heights, and the support plate 301 is lifted to a specified position; the support plate 301 and the connecting block 302 are connected together by the telescopic spring 305 connecting rope 304, so that the support plate 301 and the connecting block 302 form a grid supporting the steel box girder 2; a plurality of support plates 301 and connecting blocks 302 are combined with each other to form a tire frame of specific specifications; then the mounting plate 505 is fixed on the surface of the steel box girder 2 after production; the steel cable 504 is wound up by the winch 503, so that the mounting plate 505 drives the steel box girder 2 to move upward; the first power wheel 406 drives the first slider 405 to move along the first guide rail 404, so that the support crossbeam 401 drives the steel box girder 2 to move above the assembled tire frame; through the above device, different tire frames can be overlapped according to different bridge types, which reduces the difficulty of building the tire frame; the large-span steel box girders with different cross sections can be subjected to in-factory processing simulation pre-assembly test, and the pre-assembly efficiency of the steel box girder 2 is improved.

[0044] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A large-span variable-section steel box girder in-plant processing simulation pre-assembly device, comprising a hardened foundation (1) and a steel box girder (2), characterized in that: A plurality of lifting mechanisms (3) for lifting the steel box beam (2) are arranged above the hardened foundation (1), the lifting mechanisms (3) comprising a support plate (301), a connection block (302) and a connection rope (304); a moving mechanism (4) for moving the steel box beam (2) is arranged outside the hardened foundation (1), the moving mechanism (4) comprising a supporting crossbeam (401) and a supporting column (403); a fixing mechanism (5) for fixing the steel box beam (2) is arranged on the surface of the supporting crossbeam (401), the fixing mechanism (5) comprising a second guide rail (501) and a mounting plate (505).

2. The in-plant processing simulation pre-assembly device for large-span variable-section steel box beams according to claim 1 is characterized in that: A hydraulic push rod (306) is fixedly connected to the surface of the hardened foundation (1), and the output end of the hydraulic push rod (306) is hinged to the support plate (301), and an anti-slip ring (303) is fixedly connected to the surface of the connection block (302).

3. The in-plant processing simulation pre-assembly device for large-span variable-section steel box beams according to claim 1 is characterized in that: One end of the connecting rope (304) is fixedly connected to the connecting block (302), and one end of the connecting rope (304) away from the connecting block (302) passes through the supporting plate (301) and is slidably connected to the supporting plate (301), a telescopic spring (305) is fixedly connected inside the supporting plate (301), and the other end of the telescopic spring (305) is fixedly connected to the connecting rope (304).

4. The in-plant processing simulation pre-assembly device for large-span variable-section steel box beams according to claim 1 is characterized in that: A connecting crossbar (402) is fixedly connected to the surface of the supporting column (403), and the top end of the connecting crossbar (402) is fixedly connected to the supporting crossbeam (401).

5. The in-plant processing simulation pre-assembly device for large-span variable-section steel box beams according to claim 1 is characterized in that: A first guide rail (404) is provided below the support column (403), a first slider (405) is slidably connected to the surface of the first guide rail (404), and the first slider (405) is fixedly connected to the support column (403).

6. The in-plant processing simulation pre-assembly device for large-span variable-section steel box beams according to claim 5 is characterized in that: The bottom end of the first sliding block (405) is rotatably connected to a first power wheel (406), and the surface of the first power wheel (406) is transmission-connected to the first guide rail (404).

7. The in-plant processing simulation pre-assembly device for large-span variable-section steel box beams according to claim 1 is characterized in that: The second guide rail (501) is fixedly connected to the supporting crossbeam (401); a second slider (502) is slidably connected to the surface of the second guide rail (501); a second power wheel (506) is rotatably connected to the top of the second slider (502); and the second power wheel (506) is transmission-connected to the second guide rail (501).

8. The in-plant processing simulation pre-assembly device for large-span variable-section steel box beams according to claim 7 is characterized in that: A hoist (503) is fixedly connected to the surface of the second sliding block (502), an output end of the hoist (503) is fixedly connected to a steel cable (504), and a bottom end of the steel cable (504) is fixedly connected to a mounting plate (505), and the mounting plate (505) is fixedly connected to the surface of the steel box girder (2).

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