Steel box girder hoisting device

Abstract

The embodiment of the invention provides a steel box girder hoisting device, and relates to the technical field of steel box girder hoisting. A steel box girder hoisting device comprises a hoisting beam hanging bracket, air cylinder barrels are fixedly connected to the periphery of the hoisting beam hanging bracket, air inlets of the air cylinder barrels are communicated with air inlet pipes with air inlet valves, and the bottoms of the air cylinder barrels are fixedly connected with fixing frames through installation pieces; clamping assemblies used for hoisting and positioning the steel box girder are arranged on the two sides of the fixing frame, and each clamping assembly comprises a double-end motor fixed between the beam hoisting frame and the fixing frame; pressurizing assemblies which are matched with the air cylinder barrels in an acting mode are arranged on the periphery of an inner cavity of the hanging beam hanging bracket, and correcting assemblies which are matched with the pressurizing assemblies in a supplying mode are arranged on the two sides, close to the clamping assemblies, of the fixing frame. Through cooperation of the clamping assembly, the pressurizing assembly, the correcting assembly and the push-pull assembly, a pneumatic and mechanical combined mode is adopted, and efficient hoisting of position adjustment and front-back pushing of the steel box girder is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of steel box girder hoisting, and in particular relates to a steel box girder hoisting device. Background Art

[0002] Steel box girder, also known as steel plate box girder, is a common structural form for long-span bridges. It is generally used on bridges with larger 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. Its cross section has the characteristics of wide width and flat appearance. At present, the prefabrication and installation of small-curvature segmental box girders are not very common in China. Basically, the structure of cast-in-place continuous beams and the form of straight-segment segmental box girders are adopted. The hoisting construction of prefabricated segmental box girders has a small working space, tight time, many cross-operations, and complex road conditions. The combination of hoisting beams and cranes can save working space and avoid the use of large machinery and equipment, which requires the application of multiple road closure permits and causes traffic congestion.

[0003] In the prior art (publication number CN118108128B, patent name is a patent application for a steel box beam hoisting device), the horizontality and different angles are adjusted according to different scenes to avoid affecting the welding or assembly of the steel box beam, and to prevent the hoisting device from losing weight, thereby eliminating safety hazards. In the process of implementing this technical solution, it is found that there are at least the following problems in the prior art.

[0004] During the hoisting operation of several groups of steel box girders one by one, most of the time, steel box girders are hoisted and adjusted by steel wire ropes according to the connection angle and position difference between the previous group of steel box girders and the next group of steel box girders. Considering the influence of external wind factors, the adjustment of the position of the steel box girders by wire rope hoisting is difficult, time-consuming and labor-intensive, resulting in low overall hoisting efficiency of the steel box girders. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems in the prior art that a combination of pneumatic and mechanical methods cannot be used to achieve efficient lifting of steel box girders by position adjustment and forward and backward pushing. To this end, the present application proposes a steel box girder lifting device.

[0006] To achieve the above purpose, the specific technical solutions of the present invention are as follows: A steel box girder hoisting device comprises a hanging beam hanger, wherein the hanging beam hanger is fixedly connected with a cylinder barrel on all sides, and an air inlet of the cylinder barrel is connected with an air inlet pipe with an air inlet valve, and the bottom of the cylinder barrel is fixedly connected with a fixing frame through a mounting piece; Both sides of the fixing frame are provided with clamping assemblies for hoisting and positioning the steel box beam, and the clamping assemblies include a double-headed motor fixed between the hanging beam bracket and the fixing frame; The inner cavity of the hanging beam and hanger is provided with booster components cooperating with the cylinder barrel for work, and the two sides of the fixed frame close to the clamping component are provided with correction components cooperating with the booster components.

[0007] Preferably: the clamping assembly also includes an electric push rod embedded in an output shaft of the double-headed motor, and the piston rod of the electric push rod is fixedly connected to a driving bevel gear, a driven bevel gear is arranged below the driving bevel gear, and the inner cavity of the driven bevel gear is fixedly connected to a positive and negative threaded rod that rotates with a fixed frame, both sides of the positive and negative threaded rod are threadedly connected to threaded sleeves, and both sides of the threaded sleeves are fixedly connected to support plates, an L-shaped rod is fixedly connected to the center of the support plate, and the inner side of the L-shaped rod is fixedly connected to a clamping frame for lifting and positioning the steel box girder.

[0008] Preferably: the boosting assembly includes a cam frame fixed on the other output shaft of the double-headed motor, and the cam frame is rollingly connected with a push rod frame on all sides, the outer side of the push rod frame is fixedly connected with a piston seat slidingly matched with the cylinder barrel, and the outer side of the push rod frame is sleeved with a return spring, the exhaust port of the cylinder barrel is connected to an exhaust pipe with an exhaust valve, and the other end of the exhaust pipe is connected to a pressure storage tank fixedly matched with the suspension beam bracket and the fixed frame, wherein the exhaust ports of two groups of the pressure storage tanks are connected with a telescopic tube, and the outer end of the telescopic tube is connected with a first pressurizing tube, and the inner end of the first pressurizing tube is connected with a first three-way valve.

[0009] Preferably: the correction assembly includes a first sealing cylinder connected to both ends of the first three-way valve and fixedly connected to the bottom of the clamping frame, and the outer end of the first sealing cylinder is connected to the first pressure relief pipe, the inner cavity of the first sealing cylinder is slidably connected to the first T-type push rod, and the outer side of the first T-type push rod is sleeved with a first limit spring, the top of the first T-type push rod is provided with a top pressure seat that slides with the clamping frame, and the top of the clamping frame is slidably connected to the second T-type push rod, the outer side of the second T-type push rod is sleeved with a second limit spring, and the bottom of the second T-type push rod is provided with an extrusion seat that slides with the clamping frame.

[0010] Preferably, both sides of the inner cavity of the fixing frame are provided with T-shaped sliding grooves, and the inner cavity of the T-shaped sliding grooves is slidably connected with a T-shaped sliding block fixedly matched with the support plate.

[0011] Preferably, the L-shaped rod and the clamping frame are distributed in an axisymmetric state along the transverse axis of the fixing frame, and sliding sleeves that slidably cooperate with the L-shaped rod are embedded on both sides of the fixing frame.

[0012] Preferably, the exhaust pipe and the pressure storage tank are distributed in an equidistant array along the longitudinal axis of the fixing frame, and the first pressurizing pipe is connected to a first boosting valve.

[0013] Preferably, the pressing seat and the extrusion seat are distributed in an upper and lower symmetrical state, and the first pressure relief pipe is connected to a first pressure relief valve.

[0014] Preferably, a first universal ball head is provided between the first T-shaped push rod and the pressing seat, and between the second T-shaped push rod and the extrusion seat.

[0015] Preferably: a lifting ring is fixedly connected to the top of the hanging beam and hanger, and a wireless transceiver is fixedly connected to the inner cavity of the hanging beam and hanger, and reinforced antennas are arranged on both sides of the top of the wireless transceiver.

[0016] A steel box girder hoisting device of the present invention has the following advantages: 1. The steel box girder lifting device first uses a double-headed motor to provide a unified driving source for pneumatic and mechanical components, which saves power drive costs. At the same time, the electric push rod adjusts the meshing stroke between the driving bevel gear and the driven bevel gear, and then the positive and negative threaded rods drive the two groups of threaded sleeves to move synchronously inward and outward. The two groups of threaded sleeves drive the two groups of clamping frames to mechanically clamp the side of the steel box girder through the L-shaped rods on the two groups of support plates, thereby improving the lifting stability and safety of the steel box girder.

[0017] 2. The steel box girder lifting device, then, firstly drives the four groups of piston seats to perform reciprocating work in the four groups of cylinder barrels through the cam frame through the four push rod frames, and supplies the pressurized air source generated in the four groups of cylinder barrels into the four groups of pressure storage tanks for temporary storage through the four exhaust pipes, and then supplies the pressurized air source temporarily stored in two groups of pressure storage tanks into the two groups of first three-way valves through the two telescopic tubes and the first pressurizing tube, so as to provide the pressurized air source supply for the subsequent position adjustment of the steel box girder in the clamping state.

[0018] 3. The device for lifting a steel box girder, then, the pressurized air source in the two groups of first three-way valves is supplied to the two groups of first sealing cylinders, and under the action of the pressure force, the pressing seats on the two groups of first T-type push rods are forced to correspondingly lift up or reset a corner of the steel box girder, and under the extrusion pressure of the steel box girder, the extrusion seat on the second T-type push rod is forced to correspondingly lift up or move downward, so as to meet the adjustment requirements of the angle, height and balance state of the steel box girder, so that the steel box girders can be quickly lifted and connected, which greatly improves the lifting efficiency of the steel box girder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1This is a structural initial state diagram of a steel box girder hoisting device of the present invention; Figure 2 A structural hoisting state diagram of a steel box girder hoisting device of the present invention; Figure 3 A top view of a steel box girder hoisting device structure of the present invention; Figure 4 It is a top view of the fixing frame and the clamping assembly structure of the present invention in the initial state; Figure 5 It is a top cross-sectional view of the fixing frame and the clamping assembly structure of the present invention in a clamping state; Figure 6 It is a front view of the clamping state of the clamping assembly structure of the present invention; Figure 7 It is a top view of the initial state of the structure of the hanging beam and hanger, the cylinder barrel and the supercharging assembly of the present invention; Figure 8 It is a top view of the cylinder barrel and the supercharging assembly structure of the present invention in the working state; Fig. 9 It is a side cross-sectional view of the initial state of the boost assembly and the correction assembly structure of the present invention; Fig.10 It is a side cross-sectional view of the booster assembly and the correction assembly of the present invention in the adjusted state; Fig.11 It is a partial side cross-sectional view of the clamping frame and the correction assembly structure of the present invention; Fig.12 It is a top view cross-sectional view of the pressure storage tank and the push-pull assembly structure of the present invention; Fig.13 This is a cross-sectional exploded view of the push-pull assembly structure of the present invention.

[0021] Explanation of the markings in the figure: 1. Hanging beam and hanger; 2. Cylinder barrel; 3. Fixing frame; 4. Clamping assembly; 41. Double-headed motor; 42. Electric push rod; 43. Driving bevel gear; 44. Driven bevel gear; 45. Positive and negative threaded rod; 46. Threaded sleeve; 47. Support plate; 48. L-shaped rod; 49. Clamping frame; 5. Pressurizing assembly; 51. Cam frame; 52. Push rod frame; 53. Piston seat; 54. Return spring; 55. Exhaust pipe; 56. Pressure storage tank; 57. Telescopic pipe; 58. First pressurizing pipe; 59. First three-way valve; 6. Correction assembly; 61. First sealing cylinder; 62. The first pressure relief pipe; 63, the first T-type push rod; 64, the first limit spring; 65, the pressure seat; 66, the second T-type push rod; 67, the second limit spring; 68, the extrusion seat; 69, the first universal ball head; 7, the push-pull assembly; 71, the second pressurizing pipe; 72, the second three-way valve; 73, the second sealing cylinder; 74, the second pressure relief pipe; 75, the T-type bending rod; 76, the buffer spring; 77, the T-type slide seat; 78, the second universal ball head; 79, the preload seat; 8, the slide rail; 9, the slide bar; 10, the balance sensor; 11, the T-type slide groove; 12, the T-type slider; 13, the wireless transceiver. DETAILED DESCRIPTION

[0022] The present invention is specifically described below in conjunction with the accompanying drawings and specific embodiments: like Figure 1-Figure 13 As shown, a steel box girder hoisting device of the present invention comprises a hanging beam hanger 1, the hanging beam hanger 1 is fixedly connected with a cylinder barrel 2 on all sides, and the air inlet of the cylinder barrel 2 is connected with an air inlet pipe with an air inlet valve, the bottom of the cylinder barrel 2 is fixedly connected with a fixing frame 3 through a mounting piece, and the top of the hanging beam hanger 1 is fixedly connected with a hoisting ring, and then through the cooperation of the jack and the telescopic rod on the hanging beam, the fixing frame 3 on the hanging beam hanger 1 and the steel box girder clamped and fixed thereon can be hoisted to the correct position through the hoisting ring, and at the same time, the hanging beam fixes and hoists the steel box girder, thereby reducing the parking time of large hoisting equipment on site, avoiding long-term traffic congestion caused by parking large equipment, and the inner cavity of the hanging beam hanger 1 is fixedly connected with a wireless transceiver 13, and both sides of the top of the wireless transceiver 13 are provided with enhanced antennas, which is convenient for wireless remote control of electrical components; Clamping assemblies 4 for lifting and positioning the steel box girder are provided on both sides of the fixed frame 3, and the clamping assembly 4 includes a double-headed motor 41 fixed between the lifting beam hanger 1 and the fixed frame 3, which mechanically clamps the side of the steel box girder to improve the lifting stability and safety of the steel box girder; booster assemblies 5 cooperating with the cylinder barrel 2 are provided around the inner cavity of the lifting beam hanger 1 to provide a booster air source supply for the subsequent position adjustment of the steel box girder in the clamping state, and correction assemblies 6 cooperating with the booster assembly 5 are provided on both sides of the fixed frame 3 close to the clamping assembly 4 to meet the adjustment requirements of the angle, height and balance state of the steel box girder, so that the steel box girders can be quickly lifted and connected, which greatly improves the lifting efficiency of the steel box girder.

[0023] like Figure 4-Figure 11 As shown, the clamping assembly 4 also includes an electric push rod 42 embedded in an output shaft of a double-headed motor 41, and the piston rod of the electric push rod 42 is fixedly connected to a driving bevel gear 43, and a driven bevel gear 44 is arranged below the driving bevel gear 43. First, the double-headed motor 41 provides a unified driving source for pneumatic and mechanical components, which saves power driving costs, and the electric push rod 42 adjusts the meshing stroke between the driving bevel gear 43 and the driven bevel gear 44; The inner cavity of the driven bevel gear 44 is fixedly connected with a positive and negative threaded rod 45 that rotates with the fixed frame 3, and both sides of the positive and negative threaded rod 45 are threadedly connected with a threaded sleeve 46, and both sides of the threaded sleeve 46 are fixedly connected with a support plate 47, and the center of the support plate 47 is fixedly connected with an L-shaped rod 48, and the inner side of the L-shaped rod 48 is fixedly connected with a clamping frame 49 for hoisting and positioning the steel box beam. The positive and negative threaded rod 45 drives the two groups of threaded sleeves 46 to move synchronously inside and outside, and the two groups of threaded sleeves 46 drive the two groups of clamping frames 49 through the L-shaped rods 48 on the two groups of support plates 47 to mechanically clamp the side of the steel box beam, thereby improving the hoisting stability and safety of the steel box beam; T-shaped grooves 11 are provided on both sides of the inner cavity of the fixing frame 3, and the inner cavity of the T-shaped groove 11 is slidably connected with a T-shaped slider 12 fixedly matched with the support plate 47, which plays a role of sliding limit for the two ends of the support plate 47, thereby improving the displacement stability of the support plate 47. The L-shaped rod 48 and the clamping frame 49 are distributed in an axially symmetrical state along the horizontal axis of the fixing frame 3, and sliding sleeves slidably matched with the L-shaped rod 48 are embedded on both sides of the fixing frame 3, which plays a role of sliding support for the L-shaped rod 48, and also clamps and positions the side of the steel box girder, thereby playing a role of anti-slip safety.

[0024] The supercharging assembly 5 includes a cam frame 51 fixed on the other output shaft of the double-headed motor 41, and a push rod frame 52 is rollingly connected to the cam frame 51, and a piston seat 53 slidingly matched with the cylinder barrel 2 is fixedly connected to the outer side of the push rod frame 52. The cam frame 51 first drives four groups of piston seats 53 through four push rod frames 52 to reciprocate in the four groups of cylinder barrels 2, and a return spring 54 is sleeved on the outer side of the push rod frame 52. The exhaust port of the cylinder barrel 2 is connected to an exhaust pipe 55 with an exhaust valve; The other end of the exhaust pipe 55 is connected to a pressure storage tank 56 fixedly matched with the hanging beam hanger 1 and the fixing frame 3. The pressurized air source generated in the four groups of cylinder barrels 2 is supplied to the four groups of pressure storage tanks 56 for temporary storage through the four exhaust pipes 55. The exhaust ports of two groups of pressure storage tanks 56 are connected to telescopic pipes 57, and the outer ends of the telescopic pipes 57 are connected to the first pressurizing pipe 58. The inner ends of the first pressurizing pipe 58 are connected to the first three-way valve 59. Then, the two telescopic pipes 57 and the first pressurizing pipe 58 correspond to supply the pressurized air source temporarily stored in two groups of pressure storage tanks 56 to the two groups of first three-way valves 59, so as to provide the pressurized air source supply for the subsequent position adjustment of the steel box beam in the clamping state. The exhaust pipe 55 and the pressure storage tank 56 are distributed in an equidistant array along the longitudinal axis of the fixing frame 3, so as to improve the rationality of the distribution of the exhaust pipe 55 and the pressure storage tank 56 on the fixing frame 3 to prevent the fixing frame 3 from tilting due to uneven force, and the first pressurizing pipe 58 is connected to the first boosting valve to further pressurize the boosting gas source supplied into the first pressurizing pipe 58.

[0025] The correction component 6 includes a first sealing cylinder 61 connected to both ends of the first three-way valve 59 and fixedly connected to the bottom of the clamping frame 49, and the outer end of the first sealing cylinder 61 is connected to a first pressure relief pipe 62, the inner cavity of the first sealing cylinder 61 is slidably connected to a first T-shaped push rod 63, and the outer side of the first T-shaped push rod 63 is sleeved with a first limit spring 64, and the top of the first T-shaped push rod 63 is provided with a top pressure seat 65 that slidably cooperates with the clamping frame 49. The pressurized air sources in the two groups of first three-way valves 59 are supplied to the two groups of first sealing cylinders 61. Under the action of the pressure force, the top pressure seats 65 on the two groups of first T-shaped push rods 63 are forced to correspondingly push up or reset a corner of the steel box beam downward; A second T-shaped push rod 66 is slidably connected to the top of the clamping frame 49, and a second limit spring 67 is sleeved on the outer side of the second T-shaped push rod 66. An extrusion seat 68 that slidably cooperates with the clamping frame 49 is provided at the bottom of the second T-shaped push rod 66. Under the extrusion force of the steel box girder, the extrusion seat 68 on the second T-shaped push rod 66 is forced to be lifted upward or moved downward accordingly, so as to meet the adjustment requirements of the angle, height and balance state of the steel box girder, so that the steel box girders can be quickly hoisted and connected, which greatly improves the hoisting efficiency of the steel box girder. The pressure seat 65 and the extrusion seat 68 are distributed in an upper and lower symmetrical state, and the first pressure relief pipe 62 is connected to a first pressure relief valve, which plays a role in relieving and exhausting the pressurized air source in the first sealing tube 61. A first universal ball head 69 is provided between the first T-shaped push rod 63 and the pressure seat 65 and between the second T-shaped push rod 66 and the extrusion seat 68, so that the pressure seat 65 on the first T-shaped push rod 63 and the extrusion seat 68 on the second T-shaped push rod 66 change with the angle of the steel box girder.

[0026] like Figure 12-13 As shown, during the hoisting and connection of the steel box beam, due to the 150mm wet joint between the zero block and the one block, it is mostly necessary to manually push the steel box beam forward and backward to connect it with the help of a variety of tools, resulting in extremely low connection efficiency between the steel box beams and relatively complicated operation. Push-pull components 7 are provided on the other two sides of the fixed frame 3, and the push-pull components 7 include a second pressurizing pipe 71 with a second boosting valve connected to the exhaust port of the other two groups of pressure storage tanks 56, the bottom end of the second pressurizing pipe 71 is connected to the second three-way valve 72, and both ends of the second three-way valve 72 are connected to the second sealing cylinder 73 fixedly matched with the fixed frame 3, and the pressurized gas source in the other two groups of pressure storage tanks 56 is supplied to the two groups of second three-way valves 72 through the two second pressurizing pipes 71, and then supplied to the two groups of second sealing cylinders 73 through the two groups of second three-way valves 72; The outer end of the second sealing cylinder 73 is connected to a second pressure relief pipe 74 with a second pressure relief valve, and the inner cavity of the second sealing cylinder 73 is slidably connected to a T-shaped bent rod 75, the outer side of the T-shaped bent rod 75 is sleeved with a buffer spring 76, and the inner cavity of the T-shaped bent rod 75 is slidably connected to a T-shaped slide seat 77 with a compression spring. Under the pressure force formed by the pressurized air source in the second sealing cylinder 73, the two groups of T-shaped bent rods 75 are forced to drive the two groups of T-shaped slide seats 77 to push back and forth, and the bottom of the T-shaped slide seat 77 is fixedly connected to a second universal ball head 78, and the bottom of the second universal ball head 78 is fixedly connected to a pre-tightening seat 79 fixed to the steel box girder bolts. The two groups of T-shaped slide seats 77 are connected by The two sets of pre-tensioning seats 79 drive the steel box girder to adjust its forward and backward displacement, making the connection of the steel box girder faster and smoother without the need for manual intervention. Slide rails 8 are provided around the bottom of the inner cavity of the T-shaped bent rod 75, and the inner cavity of the slide rail 8 is slidably connected with a slide bar 9 fixedly matched with the T-shaped slide seat 77, which serves as a sliding limit for the T-shaped slide seat 77 and the T-shaped bent rod 75. A balance sensor 10 for detecting the balance of the steel box girder is embedded at the bottom of the inner cavity of the pre-tensioning seat 79 to monitor the balance of the steel box girder in real time. The two sets of T-shaped bent rods 75 drive the steel box girder through the two sets of pre-tensioning seats 79, and the adjustable range is 0-23cm, and the fine-tuning range is 0-4cm.

[0027] A working principle of a steel box girder hoisting device: first, a signal instruction is sent to the electronic control component through a wireless transceiver 13, and the electric push rod 42 is controlled in advance to open and drive the driving bevel gear 43 to move down and get stuck in the meshing part of the driven bevel gear 44, and then the double-headed motor 41 is controlled to open and drive the driven bevel gear 44 to rotate through the meshing driving bevel gear 43, and the driven bevel gear 44 drives the forward and reverse threaded rods 45 to rotate forward, and the forward and reverse threaded rods 45 drive two groups of threaded sleeves 46 to move inward synchronously, and the two groups of T-shaped slide grooves 11 and T-shaped sliders 12 provide sliding limit cooperation for the two groups of support plates 47, and then the two groups of threaded sleeves 46 drive the two groups of L-shaped rods through the two groups of support plates 47 The clamping frame 49 on 48 moves inward synchronously, and after clamping and positioning the side of the steel box beam located below the fixing frame 3 and inside the clamping frame 49, the double-headed motor 41 is first controlled to pause, and then the electric push rod 42 is controlled to close and drive the driving bevel gear 43 to move up and disengage from the meshing portion of the driven bevel gear 44 to the initial position. At this time, the steel box beam in the side clamping state is located between the two sets of top pressure seats 65 and the extrusion seats 68, and the two sets of pre-tightening seats 79 are fixed to the front and rear positions of the steel box beam by bolts, and then the fixing frame 3 on the hanging beam hanger 1 and the clamped and fixed steel box beam can be hoisted to the correct position through the hoisting ring through the mutual cooperation of the jack and the telescopic rod on the hanging beam; During the hoisting of the steel box girder to be clamped and fixed, when connection adjustment is required, first control the double-headed motor 41 to restart and drive the piston seats 53 on the four push rod frames 52 through the cam frame 51 to perform synchronous work in the four groups of cylinder barrels 2, and the four return springs 54 play elastic buffering and elastic return cooperation for the piston seats 53 on the four push rod frames 52, then the four-way pressurized air sources in the four groups of cylinder barrels 2 are supplied to the four groups of pressure storage tanks 56 through the four exhaust pipes 55 for temporary storage, and when it is necessary to adjust the angle and balance of the steel box girder in the hoisting state, according to the position of the steel box girder according to the angle and balance adjustment, control the pressurized air source in one group of pressure storage tanks 56 to be supplied to the first three-way valve 59 through the first pressurizing pipe 58 on the telescopic pipe 57; At the same time, the corresponding pressurized air source in the first three-way valve 59 is controlled to be supplied to the bottom end of the inner cavity of one or two first sealing tubes 61. As the pressurized air source is continuously supplied, the pressure force at the bottom end of the inner cavity of the first sealing tube 61 increases rapidly, and under the action of the pressure force, the first T-shaped push rod 63 in the inner cavity of the first sealing tube 61 is forced to push upward, and the first limit spring 64 on the first T-shaped push rod 63 is forced to be compressed, then the first T-shaped push rod 63 drives the pressing seat 65 to push up a corner of the bottom of the steel box girder through the first universal ball head 69, and the upwardly pushed pressing seat 65 changes with the angle and balance of the steel box girder, and at the same time, the steel box girder also drives the second T-shaped push rod 66 at this position to push upward through the extrusion seat 68, and pushes the first The second limit spring 67 is compressed, and the top pressure seat 65 on the first T-type push rod 63 at the remaining position at the bottom of the steel box beam changes accordingly with the cooperation of the first universal ball head 69. During this period, the steel box beam in the adjustment state forces the slide bar 9 on the T-type slide seat 77 to slide up and down in the slide rail 8 in the T-shaped bending rod 75 through the two sets of pre-tightening seats 79, and the two sets of pre-tightening seats 79 that change with the steel box beam also drive the two sets of second universal ball heads 78 to change accordingly, but the two sets of T-type slide seats 77 remain in a vertical state. By analogy, the remaining triangles at the bottom of the steel box beam are adjusted to be lifted or lowered accordingly, and the balance of the steel box beam is monitored in real time by the four sets of balance sensors 10 until the angle and balance of the steel box beam in the hoisting state are adjusted to the connection position; When the angle and balance of the steel box girder in the hoisting state are adjusted, according to the front and rear positions of the steel box girder, the pressurized air source in another group of pressure storage tanks 56 is controlled to be supplied to the second three-way valve 72 through the second pressurizing pipe 71, and the pressurized air source in the second three-way valve 72 is correspondingly supplied to the second sealing cylinder 73 at this position. Similarly, with the continuous supply of the pressurized air source, under the action of the pressure force, the T-shaped bent rod 75 in the second sealing cylinder 73 at this position is forced to be pushed outward and the buffer spring 76 is compressed. The T-shaped bent rod 75 pushed outward drives the pre-tightening seat 79 on the second universal ball head 78 that changes with the steel box girder to move outward through the T-shaped sliding seat 77. The pre-tightening seat 79 at this position drives the steel box girder to move outward in the two groups of top pressure seats 65 and extrusion seats 68, and the outward-moving steel box girder drives the T-shaped bent rod 75 on it through another group of second sealing cylinder 7 3 slides inwardly, on the contrary, the steel box girder is pushed in the opposite direction by another set of pre-tightening seats 79 until the steel box girder is pushed outward to the connection point of another set of steel box girder. After the lifting and connection operation of the steel box girder is completed, the first pressure relief valve on the two sets of first pressure relief pipes 62 is controlled to open and the second pressure relief valve on the second pressure relief pipe 74 is controlled to open, then the first T-type push rod 63 in the inner cavity of the first sealing cylinder 61 loses the pressure force, and under the elastic reset force of the first limit spring 64, the top pressure seat 65 on the first T-type push rod 63 is driven to move down and reset, and drive the top pressure seat 65 to separate from the steel box girder after the connection operation, and then control the two sets of clamping frames 49 to move outward to separate from the steel box girder, and then remove the bolts on the two sets of pre-tightening seats 79, completely separate from the steel box girder after the lifting and connection operation of this set, and descend to the lifting position of the next set of steel box girder, and so on, a plurality of sets of steel box girders are subjected to efficient lifting and connection operations.

[0028] It should be noted that the specific models and specifications of the double-headed motor 41, the electric push rod 42 and the wireless transceiver 13 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be repeated in detail.

[0029] The double-headed motor 41, the electric push rod 42, the wireless transceiver 13, the balance sensor 10 and the power supply circuits of various valves are clear to those skilled in the art and will not be described in detail here.

[0030] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A steel box girder hoisting device, comprising a girder hanger (1), characterized in that: The hanging beam and hanger (1) are fixedly connected to the cylinder barrel (2) on all sides, and the air inlet of the cylinder barrel (2) is connected to an air intake pipe with an air intake valve, and the bottom of the cylinder barrel (2) is fixedly connected to a fixing frame (3) via a mounting member; Clamping assemblies (4) for hoisting and positioning the steel box beam are arranged on both sides of the fixing frame (3), and the clamping assembly (4) comprises a double-headed motor (41) fixed between the beam hanger (1) and the fixing frame (3); The inner cavity of the hanging beam and hanger (1) is provided with a booster assembly (5) cooperating with the cylinder barrel (2) for work, and the fixing frame (3) is provided with a correction assembly (6) cooperating with the booster assembly (5) on both sides close to the clamping assembly (4).

2. A steel box girder hoisting device according to claim 1, characterized in that: The clamping assembly (4) further comprises an electric push rod (42) embedded in an output shaft of the double-headed motor (41), and the piston rod of the electric push rod (42) is fixedly connected to a driving bevel gear (43), a driven bevel gear (44) is arranged below the driving bevel gear (43), and the inner cavity of the driven bevel gear (44) is fixedly connected to a positive and negative threaded rod (45) that is rotatably matched with the fixed frame (3), both sides of the positive and negative threaded rod (45) are threadedly connected to threaded sleeves (46), and both sides of the threaded sleeves (46) are fixedly connected to support plates (47), the center of the support plate (47) is fixedly connected to an L-shaped rod (48), and the inner side of the L-shaped rod (48) is fixedly connected to a clamping frame (49) used for lifting and positioning the steel box girder.

3. A steel box girder hoisting device according to claim 2, characterized in that: The boosting assembly (5) comprises a cam frame (51) fixed on the other output shaft of the double-headed motor (41), and the cam frame (51) is rollingly connected with a push rod frame (52) on all sides, the outer side of the push rod frame (52) is fixedly connected with a piston seat (53) that slides with the cylinder barrel (2), and the outer side of the push rod frame (52) is sleeved with a return spring (54), the exhaust port of the cylinder barrel (2) is connected to an exhaust pipe (55) with an exhaust valve, and the other end of the exhaust pipe (55) is connected to a pressure storage tank (56) that is fixedly matched with the suspension beam hanger (1) and the fixed frame (3), wherein the exhaust ports of the two groups of the pressure storage tanks (56) are connected to a telescopic tube (57), and the outer end of the telescopic tube (57) is connected to a first pressurizing tube (58), and the inner end of the first pressurizing tube (58) is connected to a first three-way valve (59).

4. A steel box girder hoisting device according to claim 3, characterized in that: The correction component (6) includes a first sealing cylinder (61) connected to both ends of the first three-way valve (59) and fixedly connected to the bottom of the clamping frame (49), and the outer end of the first sealing cylinder (61) is connected to the first pressure relief pipe (62), the inner cavity of the first sealing cylinder (61) is slidably connected to the first T-type push rod (63), and the outer side of the first T-type push rod (63) is sleeved with a first limit spring (64), the top of the first T-type push rod (63) is provided with a top pressure seat (65) that slidably cooperates with the clamping frame (49), and the top of the clamping frame (49) is slidably connected to the second T-type push rod (66), the outer side of the second T-type push rod (66) is sleeved with a second limit spring (67), and the bottom of the second T-type push rod (66) is provided with an extrusion seat (68) that slidably cooperates with the clamping frame (49).

5. A steel box girder hoisting device according to claim 4, characterized in that: T-shaped slide grooves (11) are provided on both sides of the inner cavity of the fixing frame (3), and the inner cavity of the T-shaped slide groove (11) is slidably connected to a T-shaped sliding block (12) fixedly matched with the support plate (47).

6. A steel box girder hoisting device according to claim 5, characterized in that: The L-shaped rod (48) and the clamping frame (49) are distributed in an axisymmetric state along the transverse axis of the fixing frame (3), and sliding sleeves that slidably cooperate with the L-shaped rod (48) are embedded on both sides of the fixing frame (3).

7. A steel box girder hoisting device according to claim 6, characterized in that: The exhaust pipe (55) and the pressure storage tank (56) are distributed in an equidistant array along the longitudinal axis of the fixing frame (3), and the first pressure increasing pipe (58) is connected to a first pressure increasing valve.

8. The steel box girder hoisting device according to claim 7, characterized in that: The pressing seat (65) and the extrusion seat (68) are distributed in an up-and-down symmetrical state, and the first pressure relief pipe (62) is connected to a first pressure relief valve.

9. A steel box girder hoisting device according to claim 8, characterized in that: A first universal ball head (69) is provided between the first T-shaped push rod (63) and the pressing seat (65) and between the second T-shaped push rod (66) and the pressing seat (68).

10. A steel box girder hoisting device according to claim 9, characterized in that: The top of the hanging beam hanger (1) is fixedly connected to a hanging ring, and the inner cavity of the hanging beam hanger (1) is fixedly connected to a wireless transceiver (13), and both sides of the top of the wireless transceiver (13) are provided with enhanced antennas.

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