Cable type heavy load lifting device for suspension bridge

Abstract

The invention discloses a suspension bridge cable type heavy load lifting device, and belongs to the technical field of bridge construction, the whole device is driven by a crown block to move in the direction of a steel cable, a bearing rod is moved upwards, the bearing rod is fixed to a cable clamp on the steel cable, a lifting jack supplies energy through a pump station, and clamping and lifting of the steel cable on a rope drum are achieved; according to the suspension device, the bearing rod which is vertically arranged in a sliding mode can move upwards at the suspension position and is connected through the cable clamp, compared with a fixedly-arranged lifting jack, the bearing rod is separated from other devices, in the hoisting process, the bearing rod and the steel rope are suspended on the steel rope to be vertically stressed, and other frame bodies are not stressed; the suspension device is simple in structure and convenient to operate, structural damage caused by the fact that suspension stress is distributed to other structures is avoided, after the bearing rod is vertically moved and downwards moved, the catwalk can be avoided, when the suspension device reaches the suspension position, the bearing rod is upwards moved, the bearing rod is connected with the steel rope, interference between the device and the catwalk structure is avoided, and the suspension work efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge construction, and particularly relates to a cable-type heavy-load lifting device for a suspension bridge. Background Art

[0002] In bridge construction, a cable-supported hoisting device is mainly required for the suspension and installation of the main girder section; this device is movably arranged along the bridge steel cables that have been installed, and the main girder section is vertically suspended by the force of the steel cables.

[0003] The hoisting devices in the prior art are generally of a crossbeam structure, with both ends directly installed on two steel cables extending in the same direction. This device is mainly supported by the steel cables. During the suspension process, the frame is prone to deformation and the steel cables are prone to torsion due to the influence of the suspended weight. Moreover, the hoisting device moving along the steel cables needs to bypass the cable clips on the steel cables during the movement, so a staged movement structure also needs to be designed, resulting in a complex structure and slow movement of this device. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a cable-type heavy-load lifting device for a suspension bridge, which supports and provides movement for the hoisting frame by arranging additional cables, and separates the device and the hoisting structure during the hoisting process to avoid the influence of hoisting on the force of the frame.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: The present invention includes cables arranged along the extension direction of the bridge steel cables. The cables are located above the bridge steel cables. A trolley is movably arranged on the cables. An electric hoist is connected to the bottom end of the trolley. A suspension beam is hoisted below the electric hoist. C-shaped frames are horizontally slidably arranged at both ends of the suspension beam. The C-shaped frames extend downward and bend, with the opening facing the inside of the bridge and surrounding the outside of the bridge catwalk. The lower edges between the two C-shaped frames are fixedly connected by a bottom frame. A pump station and a rope drum around which a steel rope is wound are fixed on the bottom frame. A vertical opening is also provided on the bottom frame. A bearing rod is vertically slidably arranged on the opening. The upper end of the bearing rod is connected to a cable clip on the bridge steel cable, and a lifting jack is fixedly arranged at the lower end. The steel rope in the rope drum passes through the lifting jack and extends downward. The pump station is connected to the lifting jack through a hose.

[0006] Further, the ends of the upper edges of the two C-shaped frames are connected by an upper beam. A horizontal jack is connected between the side surface of the suspension beam and the upper beam. The pump station is connected to the horizontal jack through a hose. A horizontal connecting pin is arranged at the upper end of the bearing rod. The connecting pin is inserted into a through hole on the lower side of the cable clip as the C-shaped frame translates. A threaded cylinder for locking the bearing rod is also threadedly connected to the end of the connecting pin.

[0007] Further, a suspension is provided on the C-shaped frame. An auxiliary lifting roller is rotatably provided on the suspension. The auxiliary lifting roller is located beside the bearing rod and above the lifting jack. The steel rope passes out of the rope drum, bypasses the auxiliary lifting roller from top to bottom and is connected to the lifting jack.

[0008] Further, two connecting columns are provided on the side of the bearing rod. A stop is provided at the end of the connecting column. Two vertical columns are provided on the chassis. The two columns are respectively connected with a groove rail through a plurality of springs. The two sides of the stop are respectively embedded and slidably arranged in the two groove rails.

[0009] Further, a transverse adjustment system is connected between the two overhead cranes. The transverse adjustment system includes a connecting rod fixed on the side of the overhead crane. A perforation is provided at the end of the connecting rod. It also includes a connecting rope. The two ends of the connecting rope respectively pass through the two perforations. The end of the connecting rope passes through the perforation and winds back. The connecting rope is fixed on the body of the connecting rope through a plurality of buckles.

[0010] Further, the two steel ropes extend vertically downward. A hook for suspending the main beam section is provided at the end of the steel rope.

[0011] Further, a through hole for the bearing rod to pass through is provided on the catwalk walking surface. The through hole is located directly below the cable clamp.

[0012] The beneficial effects of the present invention are as follows: The present invention drives the whole device to move along the direction of the steel cable through the overhead crane. When suspending the main beam section, the whole device is driven by the overhead crane to move to the suspension position. By lifting the bearing rod upward and fixing the bearing rod on the cable clamp on the steel cable, the lifting jack on the bearing rod is powered by the pump station to realize the clamping and lifting of the steel rope on the rope drum. With this structure, through the vertically slidable bearing rod, it can be lifted at the suspension position and connected with the cable clamp. Compared with the fixedly arranged lifting jack, in this suspension device, the bearing rod is separated from the rest of the device. During the hoisting process, only the bearing rod and the steel rope are suspended on the steel cable and vertically stressed, and the rest of the frame will not be stressed, avoiding structural damage caused by the suspension force being distributed to the rest of the structure. And by vertically moving the bearing rod, after moving the bearing rod downward, the whole device can directly move away from the catwalk. When reaching the suspension position, the bearing rod is lifted upward again to connect the bearing rod with the steel cable, avoiding the interference between the device and the catwalk structure and improving the efficiency of the suspension work.

[0013] Other advantages, objectives and features of the present invention will be described in the subsequent specification, and to some extent, they are obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. Description of the Drawings

[0014] To make the objectives, technical solutions and beneficial effects of the present invention clearer, the following drawings are provided for illustration of the present invention: Figure 1 Overall schematic diagram of the cable-supported hoisting device according to an embodiment of the present invention; Figure 2 Front view of the cable-supported hoisting device according to an embodiment of the present invention; Figure 3 For Figure 2 Enlarged schematic view of location A of Figure 4 For Figure 3 View in the direction of C of Figure 5 Schematic diagram of the cooperation between the trough rail and the stop head according to an embodiment of the present invention; Figure 6 For Figure 2 Cross-sectional view of location A of Figure 7 For Figure 2 Enlarged schematic view of location B of The markings in the drawings are as follows: 11, steel cable; 12, catwalk; 121, through hole; 13, cable clip; 2, trolley; 3, electric hoist; 4, suspension beam; 5, C-shaped frame; 51, chassis; 511, opening; 52, upper beam; 53, horizontal jack; 54, suspension; 55, auxiliary lifting roller; 56, column; 57, spring; 58, trough rail; 6, lateral adjustment system; 61, connecting rod; 611, perforation; 62, connecting rope; 63, buckle; 7, pump station; 8, cable drum; 81, steel rope; 9, load-bearing rod; 91, lifting jack; 92, connecting pin; 93, threaded cylinder; 94, connecting column; 95, stop head. Detailed implementation manners

[0015] As shown in Figure 1 , Figure 2 and Figure 6As shown in the figure, the present invention discloses a cable - type heavy - load lifting device for a suspension bridge, which includes a cable arranged along the extending direction of the bridge steel cable 11. The cable is located above the bridge steel cable 11. A trolley 2 is movably arranged on the cable. A hoist 3 is connected to the bottom end of the trolley 2. A suspension beam 4 is hoisted under the hoist 3. C - shaped frames 5 are horizontally slidably arranged at both ends of the suspension beam 4. The C - shaped frames 5 extend downward and bend. A number of connecting rod bodies are connected between the two C - shaped frames 5. The opening 511 of the C - shaped frame 5 faces the inner side of the bridge and surrounds the outside of the bridge catwalk 12. The bottom edges of the two C - shaped frames 5 are fixedly connected by a bottom frame 51. A pump station 7 and a cable drum 8 around which a steel rope 81 is wound are fixed on the bottom frame 51. A vertical opening 511 is also formed on the bottom frame 51. A bearing rod 9 is vertically slidably arranged on the opening 511. The upper end of the bearing rod 9 is connected to a cable clip 13 on the bridge steel cable 11, and a lifting jack 91 is fixedly arranged at the lower end. The steel rope 81 in the cable drum 8 passes through the lifting jack 91 and extends downward. The pump station 7 is connected to the lifting jack 91 through a hose.

[0016] For this device, the trolley 2 drives the whole device to move along the direction of the steel cable 11. When suspending the main beam section, the trolley 2 drives the whole device to move to the suspension position. By moving the bearing rod 9 upward and fixing the bearing rod 9 on the cable clip 13 on the steel cable 11, the lifting jack 91 on the bearing rod 9 is powered by the pump station 7 to realize the clamping and lifting of the steel rope 81 on the cable drum 8. With this structure, through the vertically slidable bearing rod 9, it can move upward at the suspension position and be connected by the cable clip 13. Compared with the fixedly arranged lifting jack 91, in this suspension device, the bearing rod 9 is separated from the rest of the device. During the hoisting process, it is only suspended on the steel cable 11 vertically by the bearing rod 9 and the steel rope 81, and the rest of the frame will not be stressed, avoiding structural damage caused by the suspension force being distributed to the rest of the structure. And by vertically moving the bearing rod 9, after moving the bearing rod 9 downward, the whole device can directly move avoiding the catwalk 12. When reaching the suspension position, by moving the bearing rod 9 upward again, the bearing rod 9 is connected to the steel cable 11, avoiding the interference between the device and the structure of the catwalk 12 and improving the efficiency of the suspension work.

[0017] In a further scheme, as Figure 6 shown, the ends of the upper edges of the two C - shaped frames 5 are connected by an upper beam 52. A horizontal jack 53 is connected between the side surface of the suspension beam 4 and the upper beam 52. The pump station 7 is connected to the horizontal jack 53 through a hose. A horizontal connecting pin 92 is arranged at the upper end of the bearing rod 9. The connecting pin 92 is inserted into a through - hole 611 on the lower side of the cable clip 13 as the C - shaped frame 5 translates. A threaded cylinder 93 for locking the bearing rod 9 is also threadedly connected to the end of the connecting pin 92.

[0018] In this structure, the horizontal jack 53 is used to control the horizontal movement of the C-shaped frame 5 on the cantilever beam 4 to adjust the lateral position of the C-shaped frame 5. And through the force application of the horizontal jack 53, the connecting pin 92 of the bearing rod 9 is driven to insert into the perforation 611 below the cable clamp 13 and fixed with the threaded cylinder 93. This structure is mainly used to assist the connection between the bearing rod 9 and the cable clamp 13.

[0019] In a further solution, as Figure 4 and Figure 6 shown, a suspension 54 is further provided on the C-shaped frame 5. An auxiliary lifting roller 55 is rotatably provided on the suspension 54. The auxiliary lifting roller 55 is located beside the bearing rod 9. The auxiliary lifting roller 55 is located above the lifting jack 91. The steel rope 81 passes out of the rope cylinder 8, bypasses the auxiliary lifting roller 55 from top to bottom and is connected to the lifting jack 91.

[0020] This structure is used to assist the up and down movement of the bearing rod 9. Before the connection between the bearing rod 9 and the cable clamp 13, by rotating the rope cylinder 8, the steel rope 81 pulls the lifting jack 91 to move the bearing rod 9 up and down to assist the connection between the bearing rod 9 and the cable clamp 13. After the connection between the cable clamp 13 and the bearing rod 9, the bearing rod 9 bears the suspension structure of the main beam section, while the rest of the structure is separated from the bearing rod 9, avoiding the influence of the force on the bearing rod 9 on the rest of the frame.

[0021] In a further solution, as Figure 4 and Figure 5 shown, two connecting columns 94 are provided on the side of the bearing rod 9. A stop head 95 is provided at the end of the connecting column 94. Two vertical columns 56 are provided on the chassis 51. The two vertical columns 56 are respectively connected with a groove rail 58 through a plurality of springs 57. The two sides of the stop head 95 are respectively embedded and slidably arranged in the two groove rails 58.

[0022] By setting the elastic groove rail 58 structure, it is used to softly limit the vertical movement of the bearing rod 9 to avoid excessive shaking and deflection of the bearing rod 9. When the bearing rod 9 moves up to the position of the cable clamp 13, the bearing rod 9 can be manually moved a certain distance to ensure the precise docking between the bearing rod 9 and the cable clamp 13. And this structure not only ensures the moving direction of the bearing rod 9, but also avoids the hard connection between the bearing rod 9 and the rest of the frame, avoiding the influence of the force on the bearing rod 9 in the suspension work on the rest of the frame.

[0023] In a further solution, as Figure 2 and Figure 7As shown, a lateral adjustment system 6 is connected between the two overhead cranes 2. The lateral adjustment system 6 includes a connecting rod 61 fixed to the side of the overhead crane 2. A perforation 611 is provided at the end of the connecting rod 61. The lateral adjustment system 6 further includes a connecting rope 62. Two ends of the connecting rope 62 respectively pass through the two perforations 611. The end of the connecting rope 62 passes through the perforation 611 and winds around. The connecting rope 62 is fixed to the body of the connecting rope 62 by a plurality of buckles 63.

[0024] By providing the lateral adjustment system 6 with an adjustable length to control the relative distance between the two C-shaped frames 5, it is convenient to adjust the lateral distance of the C-shaped frames 5, so that the C-shaped frames 5 are in the correct suspension position, and it also ensures the synchronous movement of the two C-shaped frames 5 and avoids excessive shaking of the C-shaped frames 5.

[0025] In a further embodiment, the two steel ropes 81 extend vertically downward, and hooks for suspending the main beam section are provided at the ends of the steel ropes 81.

[0026] In a further embodiment, a through hole 121 for the bearing rod 9 to pass through is provided on the walking surface of the catwalk 12, and the through hole 121 is directly below the cable clamp 13.

[0027] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A cable-type heavy-load lifting device for a suspension bridge, characterized in that: It includes a cable arranged along the extending direction of the bridge cable (11). The cable is located above the bridge cable (11). A trolley (2) is movably arranged on the cable. A hoist (3) is connected to the bottom end of the trolley (2). A suspension beam (4) is hoisted and arranged below the hoist (3). C-shaped frames (5) are horizontally slidably arranged at both ends of the suspension beam (4). The C-shaped frames (5) extend downward and bend, and the opening (511) faces the inner side of the bridge and surrounds the outside of the bridge catwalk (12). The bottom edges between the two pairs of C-shaped frames (5) are fixedly connected by a bottom frame (51). A pump station (7) and a rope drum (8) around which a steel rope (81) is wound are fixed on the bottom frame (51). A vertical opening (511) is also opened on the bottom frame (51). A bearing rod (9) is vertically slidably arranged on the opening (511). The upper end of the bearing rod (9) is connected to a cable clip (13) on the bridge cable (11), and a lifting jack (91) is fixedly arranged at the lower end. The steel rope (81) in the rope drum (8) passes through the lifting jack (91) and extends downward. The pump station (7) is connected to the lifting jack (91) through a hose; the ends of the upper edges of the two pairs of C-shaped frames (5) are connected by an upper beam (52). A horizontal jack (53) is connected between the side surface of the suspension beam (4) and the upper beam (52). The pump station (7) is connected to the horizontal jack (53) through a hose. A horizontal connecting pin (92) is arranged at the upper end of the bearing rod (9). The connecting pin (92) is inserted into a perforation (611) below the cable clip (13) as the C-shaped frame (5) translates. A threaded cylinder (93) for locking the bearing rod (9) is also threadedly connected to the end of the connecting pin (92).

2. The cable-type heavy-load lifting device for a suspension bridge according to claim 1, characterized in that: A suspension (54) is also arranged on the C-shaped frame (5). An auxiliary lifting roller (55) is rotatably arranged on the suspension (54). The auxiliary lifting roller (55) is located beside the bearing rod (9). The auxiliary lifting roller (55) is located above the lifting jack (91). The steel rope (81) passes out of the rope drum (8), bypasses the auxiliary lifting roller (55) from top to bottom and is connected to the lifting jack (91).

3. The cable-type heavy-load lifting device for a suspension bridge according to claim 1, wherein: Two connecting columns (94) are arranged on the side surface of the bearing rod (9). Stopping heads (95) are arranged at the ends of the connecting columns (94). Two vertical columns (56) are vertically arranged on the bottom frame (51). The two vertical columns (56) are respectively connected to a groove rail (58) through a plurality of springs (57). The two sides of the stopping head (95) are respectively embedded and slidably arranged in the two groove rails (58).

4. The cable-type heavy-load lifting device for a suspension bridge according to claim 1, wherein: A lateral adjustment system (6) is connected between the two trolleys (2). The lateral adjustment system (6) includes a connecting rod (61) fixed to the side surface of the trolley (2). A perforation (611) is arranged at the end of the connecting rod (61). It also includes a connecting rope (62). The two ends of the connecting rope (62) respectively pass through the two perforations (611). The end of the connecting rope (62) passes through the perforation (611) and winds back. The connecting rope (62) is fixed to the body of the connecting rope (62) through a plurality of locking clips (63).

5. The cable - type heavy - load lifting device for a suspension bridge according to claim 1, characterized in that: The two steel ropes (81) extend vertically downward, and hooks for suspending the main beam section are provided at the ends of the steel ropes (81).

6. The cable-type heavy-load lifting device for a suspension bridge according to claim 1, characterized in that: A through hole (121) for the load-bearing rod (9) to pass through is formed in the walking surface of the catwalk (12), and the through hole (121) is directly below the cable clamp (13).

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