Hoisting device and method for curve continuous steel box girder construction

Abstract

The invention relates to the technical field of constructional engineering, and provides a hoisting device and method for curve continuous steel box girder construction, the hoisting device comprises a protection plate, a fixing plate is arranged at the top of the protection plate, a supporting frame is fixedly connected to the top of the fixing plate, and a hoisting hook is arranged at the bottom of the supporting frame; an adjusting device is arranged at the top of the protection plate and comprises a motor, the motor is fixedly connected to the top of the protection plate, an output shaft of the motor is fixedly connected with a telescopic rod, the top of the telescopic rod is fixedly connected with a threaded rod, and the top of the threaded rod is rotationally connected with a fixing rod. And the circumferential surface of the fixed rod is fixedly connected with a clamping block. By means of the technical scheme, the problems that in the prior art, the effect of adjusting the height of a lifting hook is difficult to achieve, the height of the lifting hook is difficult to adjust rapidly according to actual construction requirements, and the lifting hook is difficult to adapt to lifting of steel box girders of different specifications are solved.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, and in particular to a hoisting device and method for the construction of a curved continuous steel box girder. 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. Because of its box-like appearance, it is called steel box girder. In large-span cable-supported bridges, the span of steel box main beams reaches hundreds of meters or even thousands of meters. It is generally divided into several beam sections for manufacturing and installation. Therefore, when installing steel box girders, lifting equipment is used to lift the steel box girders, and then splicing and installation are carried out.

[0003] According to a publicly disclosed hoisting device and method for the construction of a curved continuous steel box girder (publication number: CN117699647B), it includes a hoisting beam, a fixed structure is installed at the side end of the hoisting beam, an adjusting structure is installed at the bottom end of the hoisting beam, an oil injection structure is installed inside the adjusting structure, a mounting structure is installed at the top of the hoisting beam, a positioning structure is installed inside the hoisting beam, a placement structure is installed at the top of the mounting structure, and a transmission structure is installed at the top of the hoisting beam. However, in the above device, it is difficult to achieve the effect of adjusting the height of the hoisting hook through the mutual cooperation of components such as the hoisting beam, the fixed structure and the placement structure, and it is difficult to quickly adjust the height of the hoisting hook according to actual construction needs. It is difficult to adapt to the hoisting of steel box girders of different specifications, and it needs to be improved. Summary of the invention

[0004] The present invention provides a hoisting device for the construction of a curved continuous steel box girder, which solves the problems raised in the above documents.

[0005] The technical solution of the present invention is as follows: A hoisting device for the construction of a curved continuous steel box girder comprises a protective plate, a fixing plate is arranged on the top of the protective plate, a supporting frame is fixedly connected to the top of the fixing plate, and a hoisting hook is arranged on the bottom of the supporting frame; An adjusting device is provided on the top of the protective plate, and the adjusting device includes a motor, and the motor is fixedly connected to the top of the protective plate, and the output shaft of the motor is fixedly connected to a telescopic rod, and the top of the telescopic rod is fixedly connected to a threaded rod, and the top of the threaded rod is rotatably connected to a fixed rod, and the circumferential surface of the fixed rod is fixedly connected to a clamping block, and the bottom of the fixed plate is rotatably connected to a rotating rod, and the bottom of the rotating rod is fixedly connected to a rotating rod. The force of the telescopic rod driven by the motor to rotate cooperates with the threaded rod, the fixed rod, the protective shell and other components in the adjusting device, so that the displacement of the fixed rod drives the fixed plate to move, thereby driving the support frame and the lifting hook to move, and achieving the effect of adjusting the height of the lifting hook. The height of the lifting hook can be quickly adjusted according to actual construction needs to adapt to the lifting of steel box girders of different specifications. The top of the protective plate is fixedly connected to a protective shell, the inner wall of the protective shell is provided with a sliding groove, the inner wall of the sliding groove is slidingly connected to the side of the slider, the top of the fixed rod is fixedly connected to the bottom of the fixed plate, and the design of the slider and the sliding groove can enable the fixed rod to be displaced without rotating with the rotation of the threaded rod.

[0006] A block is fixedly connected to the side of the protective shell, and the block is located on the movement trajectory of the support rod. The shape of the support rod is set to be L-shaped. When the support rod is rotated into the inside of the block and is stuck, the fixing plate can be effectively fixed to prevent it from accidental displacement during the lifting process, thereby improving the stability of the entire lifting device.

[0007] A fixing device is provided on the top of the protective plate, and the fixing device includes a positioning rod, the positioning rod is fixedly connected to the side of the fixing plate, the end of the positioning rod away from the fixing plate is rotatably connected to a rotating rod, one end of the rotating rod is fixedly connected to a gear, and the other end of the rotating rod is fixedly connected to a gear plate, the top of the protective plate is fixedly connected to a rack, the bottom of the fixing plate is fixedly connected to a telescopic column, the telescopic end of the telescopic column is fixedly connected to a round rod, the end of the round rod away from the telescopic column is fixedly connected to a support plate, and the side of the support plate is fixedly connected to a rack rod.

[0008] The side of the rack meshes with the side of the gear, and the side of the gear plate meshes with the side of the rack rod. Through multi-level structures such as gears and racks, more precise height adjustment can be achieved to ensure that the lifting structure can adapt to different working conditions and meet different lifting requirements.

[0009] The number of the telescopic columns is set to be several, in groups of two, and symmetrical with each other along the vertical center axis of the protective plate. The size of the gear is consistent with the size of the gear plate. When the height of the lifting structure is too high, the opening of the four telescopic columns can effectively disperse and bear the load during the lifting process, increase the stability of the structure, and reduce the risk of tilting or tipping.

[0010] A lubrication device is provided on the top of the protective plate, and the lubrication device includes a spring pump, which is fixedly connected to the top of the fixed plate, an oil outlet pipe is fixedly penetrated through the front side of the spring pump, an extrusion rod is penetrated through the side of the spring pump, a long rod is fixedly connected to the side of the rack rod, and a limiting rod is fixedly connected to the inner wall of the spring pump.

[0011] The inner wall of the spring pump is fixedly connected with a positioning plate, the side of the positioning plate is provided with a partition, the top of the partition is fixedly connected with a push rod, one end of the extrusion rod is set as an inclined surface, the top of the push rod is set as an inclined surface, the extrusion rod is located on the movement trajectory of the long rod, the long rod is driven by the displacement of the rack rod, and then the extrusion rod is pushed by the long rod. This transmission mechanism can realize precise displacement control. This design enables the equipment to be accurately adjusted during lifting and construction, thereby improving the efficiency and safety of construction.

[0012] A spring is fixedly connected to the bottom of the partition, and one end of the spring away from the partition is fixedly connected to the inner wall of the spring pump. A return spring is fixedly connected to the side of the spring pump, and one end of the return spring away from the spring pump is fixedly connected to the outer surface of the extrusion rod. When the long rod is away from the extrusion rod, the extrusion rod and the partition are reset by the return spring, ensuring that the equipment can quickly return to its initial position when not in operation.

[0013] A method for hoisting a hoisting device for construction of a curved continuous steel box girder, comprising: S1: The telescopic rod is driven by a motor to rotate, and the rotation of the telescopic rod drives the threaded rod connected to the protective shell to rotate, so that the threaded rod drives the fixed rod to move upward; S2: The fixing plate is then displaced by the displacement of the fixing rod, thereby driving the support frame and the lifting hook to displace, thereby achieving the function of adjusting the height of the lifting hook; S3: When the lifting hook is adjusted to a suitable height, the rotating rod is rotated so that the rotating rod drives the supporting plate to rotate. When the supporting plate rotates to the inside of the clamping block, the supporting rod is stuck by the clamping block and stops moving.

[0014] The working principle and beneficial effects of the present invention are: 1. In the present invention, the force of the telescopic rod driven by the motor to rotate cooperates with the components such as the threaded rod, the fixed rod and the protective shell in the adjusting device, so that the fixed plate is driven to move by the displacement of the fixed rod, thereby driving the support frame and the lifting hook to move, thereby achieving the effect of adjusting the height of the lifting hook. The height of the lifting hook can be quickly adjusted according to actual construction needs to adapt to the lifting of steel box girders of different specifications.

[0015] 2. In the present invention, the force of the positioning rod driven by the displacement of the fixed plate cooperates with the components such as the gear plate, telescopic column and support plate in the fixing device, so as to realize the effect of driving the round rod to move by the displacement of the support plate, and driving the telescopic end of the telescopic column to move by the rotating rod. When the height of the lifting structure is adjusted to be too high, the four telescopic columns open to support the fixed plate, thereby increasing the stability of the lifting structure, increasing the stability of the structure, and reducing the risk of tilting or overturning.

[0016] 3. In the present invention, the force of the long rod being displaced by the displacement of the rack rod cooperates with the oil outlet pipe, the limit rod, the return spring and other components in the lubrication device, so that the lubricating oil at the top of the spring pump flows through the notch to the bottom of the spring pump, and then drips onto the gear set through the oil outlet pipe, thereby achieving the effect of lubricating the gear set. This automated lubrication system reduces the frequency of manual maintenance, reduces the failure rate, and extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the present invention; Figure 2 It is a three-dimensional side view structural schematic diagram of the rack of the present invention; Figure 3 It is a schematic diagram of a three-dimensional half-section structure of a clamping block of the present invention; Figure 4 It is a three-dimensional enlarged structural schematic diagram of the telescopic rod of the present invention; Figure 5 It is a three-dimensional side view structural schematic diagram of the gear of the present invention; Figure 6 It is a three-dimensional enlarged structural schematic diagram of the spring pump of the present invention; Figure 7 It is a schematic diagram of a three-dimensional half-section structure of a spring of the present invention; Figure 8 For the present invention Figure 1 Schematic diagram of the three-dimensional enlarged structure of A in the middle.

[0019] In the figure: 101, protective plate; 102, fixed plate; 103, support frame; 104, lifting hook; 2, adjustment device; 201, motor; 202, telescopic rod; 203, threaded rod; 204, fixed rod; 205, protective shell; 206, slide groove; 207, slider; 208, block; 209, rotating rod; 210, supporting rod; 3, fixing device; 301, positioning rod; 302, rotating rod Rod; 303, gear; 304, gear plate; 305, rack; 306, telescopic column; 307, rack rod; 308, support plate; 309, round rod; 4, lubrication device; 401, spring pump; 402, positioning plate; 403, partition; 404, spring; 405, limit rod; 406, push rod; 407, extrusion rod; 408, return spring; 409, oil outlet pipe; 410, long rod. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1 like Figure 1 to Figure 8As shown, this embodiment proposes a lifting device for the construction of a curved continuous steel box girder, including a protective plate 101, a fixed plate 102 is arranged on the top of the protective plate 101, the top of the fixed plate 102 is fixedly connected to a support frame 103, and a lifting hook 104 is arranged at the bottom of the support frame 103; an adjusting device 2 is arranged on the top of the protective plate 101, and the adjusting device 2 includes a motor 201, the motor 201 is fixedly connected to the top of the protective plate 101, the output shaft of the motor 201 is fixedly connected to a telescopic rod 202, the top of the telescopic rod 202 is fixedly connected to a threaded rod 203, the top of the threaded rod 203 is rotatably connected to a fixed rod 204, the circumferential surface of the fixed rod 204 is fixedly connected to a clamping block 208, the bottom of the fixed plate 102 is rotatably connected to a rotating rod 209, and the bottom of the rotating rod 209 is fixedly connected to the rotating rod 209. The top of the protective plate 101 is fixedly connected with a protective shell 205, and the inner wall of the protective shell 205 is provided with a slide groove 206. The inner wall of the slide groove 206 is slidably connected with the side of the slider 207. The top of the fixed rod 204 is fixedly connected with the bottom of the fixed plate 102. The design of the slider 207 and the slide groove 206 can make the fixed rod 204 move without rotating with the rotation of the threaded rod 203. The side of the protective shell 205 is fixedly connected with a clamping block 208, and the clamping block 208 is located on the motion track of the support rod 210. The shape of the support rod 210 is set to be L-shaped. When the support rod 210 rotates to the inside of the clamping block 208 and is stuck, the fixed plate 102 can be effectively fixed to prevent it from accidentally moving during the hoisting process, thereby improving the stability of the entire hoisting device. A fixing device 3 is provided on the top of the protective plate 101, and the fixing device 3 includes a positioning rod 301, the positioning rod 301 is fixedly connected to the side of the fixing plate 102, the end of the positioning rod 301 away from the fixing plate 102 is rotatably connected to the rotating rod 302, one end of the rotating rod 302 is fixedly connected to the gear 303, and the other end of the rotating rod 302 is fixedly connected to the gear plate 304, the top of the protective plate 101 is fixedly connected to the telescopic column 306, the telescopic end of the telescopic column 306 is fixedly connected to the round rod 309, the end of the round rod 309 away from the telescopic column 306 is fixedly connected to the support plate 308, and the side of the support plate 308 is fixedly connected to the rack rod 307. The side of the rack 305 meshes with the side of the gear 303, and the side of the gear plate 304 meshes with the side of the rack rod 307. Through the multi-level structure of the gear 303, the rack 305, etc., a more precise height adjustment can be achieved to ensure that the hoisting structure can adapt to different working conditions and meet different hoisting requirements. The number of telescopic columns 306 is set to a plurality, two by two, and symmetrical along the vertical center axis of the protective plate 101. The size of the gear 303 is consistent with the size of the gear plate 304. When the height of the hoisting structure is too high, the opening of the four telescopic columns 306 can effectively disperse and bear the load during the hoisting process, increase the stability of the structure, and reduce the risk of tilting or tipping.

[0022] In this embodiment, the present application drives the telescopic rod 202 to rotate through the motor 201, and then the telescopic rod 202 rotates to drive the threaded rod 203 threadedly connected to the protective shell 205 to rotate, so that the threaded rod 203 drives the fixed rod 204 to move upward, and then the fixed plate 102 is displaced by the displacement of the fixed rod 204, thereby driving the support frame 103 and the lifting hook 104 to move, thereby achieving the function of adjusting the height of the lifting hook 104. When the lifting hook 104 is adjusted to a suitable height, the rotating rod 209 is rotated to make the rotating rod 209 drive the support plate 308 to rotate. When the support plate 308 rotates to the inside of the block 208, the support rod 210 is stuck by the block 208 and stops moving, thereby achieving the function of fixing the fixed plate 102 and increasing the stability of the device.

[0023] The displacement of the fixed plate 102 drives the positioning rod 301 to be displaced, and then the displacement of the positioning rod 301 drives the rotating rod 302 to be displaced, and the displacement of the rotating rod 302 drives the gear 303 to be displaced, under the action of the rack 305, the gear 303 rotates, and then the rotation of the gear 303 drives the rotating rod 302 to rotate, and the rotation of the rotating rod 302 drives the gear plate 304 to rotate, and then the rotation of the gear plate 304 drives the rack rod 307 to be displaced, and the displacement of the rack rod 307 drives the support plate 308 to be displaced, and then the displacement of the support plate 308 drives the round rod 309 to be displaced, and the telescopic end of the telescopic column 306 is displaced by the rotating rod 302, so that when the height of the lifting structure is adjusted too high, the four telescopic columns 306 are opened to support the fixed plate 102, thereby increasing the stability of the lifting structure. The opening of the four telescopic columns 306 can effectively disperse and bear the load during the lifting process, increase the stability of the structure, and reduce the risk of tilting or tipping.

[0024] Example 2 like Figure 1 to Figure 8As shown, based on the same concept as the above-mentioned embodiment 1, a second embodiment is further proposed, a lubrication device 4 is arranged on the top of the protective plate 101, the lubrication device 4 comprises a spring pump 401, the spring pump 401 is fixedly connected to the top of the fixed plate 102, an oil outlet pipe 409 is fixedly penetrated through the front side of the spring pump 401, an extrusion rod 407 is penetrated through the side of the spring pump 401, a long rod 410 is fixedly connected to the side of the rack rod 307, and a limiting rod 405 is fixedly connected to the inner wall of the spring pump 401. The inner wall of the spring pump 401 is fixedly connected with a positioning plate 402, a partition 403 is arranged on the side of the positioning plate 402, a push rod 406 is fixedly connected to the top of the partition 403, one end of the extrusion rod 407 is arranged as an inclined surface, the top of the push rod 406 is arranged as an inclined surface, the extrusion rod 407 is located on the movement trajectory of the long rod 410, and the long rod 410 is driven by the displacement of the rack rod 307, and then the extrusion rod 407 is pushed by the long rod 410. This transmission mechanism can realize precise displacement control. This design enables the equipment to be accurately adjusted during hoisting and construction, thereby improving the efficiency and safety of construction. A spring 404 is fixedly connected to the bottom of the partition 403, and one end of the spring 404 away from the partition 403 is fixedly connected to the inner wall of the spring pump 401. A return spring 408 is fixedly connected to the side of the spring pump 401, and one end of the return spring 408 away from the spring pump 401 is fixedly connected to the outer surface of the extrusion rod 407. When the long rod 410 is away from the extrusion rod 407, the extrusion rod 407 and the partition 403 are reset by the return spring 408, ensuring that the equipment can quickly return to its initial position when not in operation.

[0025] In this embodiment, the displacement of the rack rod 307 drives the long rod 410 to move, and then the displacement of the long rod 410 pushes the inclined surface of the extrusion rod 407, so that the extrusion rod 407 is displaced to squeeze the inclined surface of the push rod 406, and the push rod 406 drives the partition 403 to move downward. At this time, a notch appears on the side of the positioning plate 402, and the lubricating oil on the top of the spring pump 401 flows through the notch to the bottom of the spring pump 401, and then drips onto the gear set through the oil outlet pipe 409, thereby lubricating the gear set. When the long rod 410 is away from the extrusion rod 407, the extrusion rod 407 is reset by the elastic force of the reset spring 408, and the partition 403 is reset by the elastic force of the spring 404 and the limit rod 405.

[0026] The above are only preferred embodiments of the present invention and are 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 protection scope of the present invention.

Claims

1. A hoisting device for the construction of a curved continuous steel box girder, characterized in that: It comprises a protective plate (101), a fixing plate (102) is arranged on the top of the protective plate (101), a supporting frame (103) is fixedly connected to the top of the fixing plate (102), and a lifting hook (104) is arranged on the bottom of the supporting frame (103); An adjusting device (2) is provided at the top of the protective plate (101), and the adjusting device (2) comprises a motor (201), the motor (201) is fixedly connected to the top of the protective plate (101), the output shaft of the motor (201) is fixedly connected to a telescopic rod (202), the top of the telescopic rod (202) is fixedly connected to a threaded rod (203), the top of the threaded rod (203) is rotatably connected to a fixed rod (204), the circumferential surface of the fixed rod (204) is fixedly connected to a clamping block (208), the bottom of the fixed plate (102) is rotatably connected to a rotating rod (209), and the bottom of the rotating rod (209) is fixedly connected to a support rod (210).

2. A lifting device for curved continuous steel box girder construction according to claim 1, characterized in that: The top of the protective plate (101) is fixedly connected to a protective shell (205), the inner wall of the protective shell (205) is provided with a slide groove (206), the inner wall of the slide groove (206) is slidably connected to the side of a slider (207), and the top of the fixing rod (204) is fixedly connected to the bottom of the fixing plate (102).

3. A lifting device for curved continuous steel box girder construction according to claim 2, characterized in that: A clamping block (208) is fixedly connected to the side of the protective shell (205); the clamping block (208) is located on the movement track of the support rod (210); and the shape of the support rod (210) is set to be L-shaped.

4. The hoisting device for curved continuous steel box girder construction according to claim 3 is characterized in that: A fixing device (3) is provided at the top of the protective plate (101), the fixing device (3) comprising a positioning rod (301), the positioning rod (301) being fixedly connected to a side surface of the fixing plate (102), one end of the positioning rod (301) away from the fixing plate (102) being rotatably connected to a rotating rod (302), one end of the rotating rod (302) being fixedly connected to a gear (303), and the other end of the rotating rod (302) being fixedly connected to a gear plate (304), a rack (305) being fixedly connected to the top of the protective plate (101), a telescopic column (306) being fixedly connected to the bottom of the fixing plate (102), a round rod (309) being fixedly connected to the telescopic end of the telescopic column (306), an end of the round rod (309) away from the telescopic column (306) being fixedly connected to a support plate (308), and a rack rod (307) being fixedly connected to the side surface of the support plate (308).

5. The hoisting device for curved continuous steel box girder construction according to claim 4 is characterized in that: The side surface of the rack (305) meshes with the side surface of the gear (303), and the side surface of the gear plate (304) meshes with the side surface of the rack rod (307).

6. A lifting device for curved continuous steel box girder construction according to claim 5, characterized in that: The number of the telescopic columns (306) is set to be a plurality, in groups of two, and symmetrical with each other along the vertical center axis of the protective plate (101); the size of the gear (303) is consistent with the size of the gear plate (304).

7. The hoisting device for curved continuous steel box girder construction according to claim 6, characterized in that: A lubrication device (4) is provided on the top of the protective plate (101), and the lubrication device (4) comprises a spring pump (401). The spring pump (401) is fixedly connected to the top of the fixed plate (102), an oil outlet pipe (409) is fixedly penetrated through the front side of the spring pump (401), an extrusion rod (407) is penetrated through the side of the spring pump (401), a long rod (410) is fixedly connected to the side of the rack rod (307), and a limit rod (405) is fixedly connected to the inner wall of the spring pump (401).

8. The hoisting device for curved continuous steel box girder construction according to claim 7, characterized in that: The inner wall of the spring pump (401) is fixedly connected to a positioning plate (402), a partition (403) is arranged on the side of the positioning plate (402), a push rod (406) is fixedly connected to the top of the partition (403), one end of the extrusion rod (407) is arranged as an inclined surface, the top of the push rod (406) is arranged as an inclined surface, and the extrusion rod (407) is located on the movement trajectory of the long rod (410).

9. The hoisting device for curved continuous steel box girder construction according to claim 8, characterized in that: A spring (404) is fixedly connected to the bottom of the partition (403), one end of the spring (404) away from the partition (403) is fixedly connected to the inner wall of the spring pump (401), a return spring (408) is fixedly connected to the side of the spring pump (401), and one end of the return spring (408) away from the spring pump (401) is fixedly connected to the outer surface of the extrusion rod (407).

10. The method for hoisting a hoisting device for construction of a curved continuous steel box girder according to claim 9, characterized in that: include: S1: The telescopic rod (202) is driven to rotate by the motor (201), and the rotation of the telescopic rod (202) drives the threaded rod (203) threadably connected to the protective shell (205) to rotate, so that the threaded rod (203) drives the fixed rod (204) to move upward; S2: The fixing plate (102) is then displaced by the fixing rod (204), thereby driving the support frame (103) and the lifting hook (104) to move, thereby achieving the function of adjusting the height of the lifting hook (104); S3: When the hoisting hook (104) is adjusted to a suitable height, the rotating rod (209) is rotated so that the rotating rod (209) drives the supporting plate (308) to rotate. When the supporting plate (308) rotates to the inside of the clamping block (208), the supporting rod (210) is clamped by the clamping block (208) and stops moving.

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