CN113003433A

CN113003433A - Segment beam hoisting device

Info

Publication number: CN113003433A
Application number: CN202110125450.3A
Authority: CN
Inventors: 胡涛; 王健; 王强; 赵军伟; 王华山; 王松; 高建全; 尚兆明; 邱驰; 王学柳
Original assignee: Second Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
Current assignee: Second Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-06-22
Anticipated expiration: 2041-01-29
Also published as: CN113003433B

Abstract

The invention discloses a segmental beam hoisting device, which comprises a hoisting frame and a hoisting mechanism arranged on the hoisting frame, wherein the hoisting mechanism comprises a plurality of hoisting ropes, a lifting hook connected to the bottom ends of the hoisting ropes and a power assembly used for driving the hoisting ropes to be wound and unwound; the supporting assembly is arranged, the section beam is enclosed through the plurality of supporting hooks, the stability of the section beam in motion is guaranteed, and safety accidents are avoided.

Description

Segment beam hoisting device

Technical Field

The invention relates to a lifting device, in particular to a segment beam lifting device.

Background

The section beam is also called as a box beam, and is one of middle beams in bridge engineering, the inner part of the section beam is hollow, and flanges are arranged on two sides of the upper part of the section beam, so that the section beam is similar to a box, and the section beam is named. Single boxes, multiple boxes, etc. The box girder of the reinforced concrete structure is divided into a prefabricated box girder and a cast-in-place box girder. The box girder prefabricated in the independent site can be erected after the lower project is finished by combining the bridge girder erection machine, so that the project progress can be accelerated, and the construction period can be saved; cast-in-place box girders are mostly used for large continuous bridges.

When the section roof beam was installed, hoisting accessory need be used, and current hoisting accessory generally all directly lifts by crane many positions through many with lifting rope and lifting hook, on the one hand, because there is probably the error in lifting rope length for some lifting hooks can't hook tight section roof beam completely at all, cause the unhook, cause the incident.

Disclosure of Invention

Embodiments of the present invention aim to provide a segment beam hoisting device to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme:

a hoisting device for segmental beams comprises a hoisting frame and hoisting mechanisms arranged on the hoisting frame, wherein each hoisting mechanism comprises a plurality of hoisting ropes, a lifting hook connected to the bottom end of each hoisting rope and a power assembly used for driving the hoisting ropes to be coiled and placed, the bottom of each power assembly of each hoisting mechanism is fixedly provided with a tightening assembly, each tightening assembly comprises a second installation shell, a worm gear ring, a straight gear, a connecting rod and a rope sleeve for the hoisting ropes to pass through, the second installation shell is fixedly connected with the bottom of the power assembly through a supporting rod, the worm gear ring is rotatably arranged in the second installation shell, one side of the worm gear ring is rotatably provided with the worm meshed with the worm, one end of the worm is fixedly connected with an output shaft of a third motor through a coupler, a plurality of straight gears are rotatably arranged in the worm gear ring in an equidistance manner, inner teeth meshed with the straight gears are uniformly and integrally arranged on the inner wall of the worm gear ring, and, the straight gear is installed in pivot tip, and the straight gear terminal surface articulates there is the connecting rod, and the connecting rod other end is articulated with the fag end outer wall, and both sides about the second installation shell are worn to locate respectively at fag end both ends, fag end and second installation shell sliding connection, set up the motion groove that supplies the fag end to remove on the second installation shell.

In one alternative: the number of the lifting ropes is four.

In one alternative: the power assembly comprises a first installation shell, a first motor, a driving bevel gear, driven bevel gears, an installation shaft and a winding roller, the first installation shell is installed on the lifting frame, the first motor is installed at the bottom of the first installation shell, a first motor output shaft extends into the first installation shell and is provided with the driving bevel gears, a plurality of driven bevel gears meshed with the driving bevel gears are arranged above the driving bevel gears in an annular equal distance mode, the number of the driven bevel gears is equal to that of the lifting ropes, the driven bevel gears are installed in the first installation shell through the installation shaft and the bearing rotation, and the winding roller used for winding the lifting ropes is installed on the installation shaft.

In one alternative: the first installation shell is connected with the lifting frame in a horizontal sliding mode, a threaded rod penetrates through the upper portion of the first installation shell, the first installation shell is in threaded connection with the threaded rod, the threaded rod is rotatably installed at the bottom of the lifting frame, and one end of the threaded rod is fixedly connected with an output shaft of the second motor through a coupler.

In one alternative: the second motor is arranged on the lifting frame.

In one alternative: the first installation shell top integral type is equipped with the slider, plays to set up on the gallows and supplies the gliding spout of slider.

In one alternative: still including supporting component, supporting component includes dead lever, support hook and stopper, first installation shell bottom edge hoop equidistance is fixed with many dead levers, the quantity and the lifting rope quantity of dead lever equal and one-to-one, support the hook middle part and articulate on the dead lever, support the hook and be close to the part of lifting rope and offer the logical groove that supplies the lifting rope to pass, it has the stopper to lie in on the lifting rope between lifting hook and the support hook demountable installation.

Compared with the prior art, the embodiment of the invention has the following beneficial effects:

1. the lifting hook is hooked on the section beam, the lifting rope is wound up through the power assembly, the third motor is started, the third motor drives the worm to rotate, the worm drives the worm gear to rotate, the worm gear drives the straight gear to rotate, the straight gear drives the rope sleeves to be close to each other through the connecting rod, the lifting rope is further tightened and contracts towards the center, therefore, on one hand, unhooking can be avoided, on the other hand, lifting can be more stable, and the lifting rope is prevented from shaking;

2. the lifting mechanism is provided with a support assembly, the support assembly comprises a fixed rod, support hooks and a limiting block, after the section beam is lifted upwards to a certain height by the lifting mechanism, the limiting block moves upwards to drive one end, close to the lifting rope, of each support hook to move upwards, one end, provided with a hook, of each support hook moves downwards to finally contact with the side edge of the section beam, the section beam is surrounded through the plurality of support hooks, the stability of the section beam in motion is guaranteed, and safety accidents are avoided.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a power assembly according to a first embodiment of the present invention.

Fig. 3 is a schematic structural view of a tightening assembly according to a first embodiment of the present invention.

Fig. 4 is a three-dimensional view of a tightening assembly in a first embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a second embodiment of the present invention.

Notations for reference numerals: 1-lifting frame, 2-sliding groove, 3-sliding block, 4-threaded rod, 5-power assembly, 6-tightening assembly, 7-lifting rope, 8-lifting hook, 9-first motor, 10-second motor, 11-first mounting shell, 12-winding roller, 13-mounting shaft, 14-driven bevel gear, 15-driving bevel gear, 16-second mounting shell, 17-worm, 18-third motor, 19-straight gear, 20-connecting rod, 21-rope sleeve, 22-worm wheel rim, 23-moving groove, 24-limiting block, 25-supporting hook and 26-fixing rod.

Detailed Description

The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the several views, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practice. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.

Example 1

Referring to fig. 1 to 4, in an embodiment of the present invention, a segmental beam hoisting device includes a hoisting frame 1 and a hoisting mechanism installed on the hoisting frame 1, where the hoisting mechanism includes a plurality of hoisting ropes 7, a lifting hook 8 connected to bottom ends of the hoisting ropes 7, and a power assembly 5 for driving the hoisting ropes 7 to wind and unwind, in this embodiment, the number of the hoisting ropes 7 is preferably four, the power assembly 5 includes a first installation shell 11, a first motor 9, a driving bevel gear 15, a driven bevel gear 14, an installation shaft 13, and a winding roller 12, the first installation shell 11 is installed on the hoisting frame 1, in this embodiment, the first installation shell 11 is horizontally slidably connected with the hoisting frame 1, a sliding block 3 is integrally installed at a top of the first installation shell 11, a threaded rod 2 for the sliding block 3 is installed on the hoisting frame 1, and further, a threaded rod 4 is inserted in an upper portion of the first installation shell 11, the first mounting shell 11 is in threaded connection with the threaded rod 4, the threaded rod 4 is rotatably mounted at the bottom of the lifting frame 1, the threaded rod 4 is preferably connected with the lifting frame 1 through a fixing plate and a bearing, one end of the threaded rod 4 is fixedly connected with an output shaft of the second motor 10 through a coupler, the second motor 10 is mounted on the lifting frame 1, the second motor 10 is started, the second motor 10 drives the first mounting shell 11 to move, the first mounting shell 11 can drive the segmental beam to move, the first motor 9 is mounted at the bottom of the first mounting shell 11, an output shaft of the first motor 9 extends into the first mounting shell 11 and is provided with a driving bevel gear 15, a plurality of driven bevel gears 14 meshed with the driving bevel gears 15 are annularly arranged above the driving bevel gear 15 at equal intervals, the number of the driven bevel gears 14 is equal to the number of the lifting ropes 7 and corresponds to one another, and the driven bevel gears 14 are rotatably mounted in the first, install and be used for around the roller 12 of winding lifting rope 7 on the installation axle 13, during the use, start first motor 9, first motor 9 is the motor that is just reversing, and first motor 9 drives the rotation of drive bevel gear 15, and drive bevel gear 15 drives installation axle 13 and rotates around roller 12 through driven bevel gear 14 to can roll up

lifting rope

7, 5 bottom fixed mounting of power component of hoisting mechanism has tightening means 6, tightening means 6 includes second installation shell 16, worm 17, worm wheel circle 22, straight-teeth gear 19, connecting rod 20 and the fag end 21 that supplies lifting rope 7 to pass, second installation shell 16 passes through branch and 5 bottom fixed connection of power component, and second installation shell 16 internal rotation installs worm wheel circle 22, and worm wheel circle 22 preferably rotates through bearing and second installation shell 16 to be connected, and worm 17 that meshes with it is installed to worm wheel circle 22 one side rotation, and worm 17 one end is through shaft coupling and third motor 18 output shaft fixed connection, by utilizing the self-locking performance of the worm 17 and the worm wheel, namely the worm 17 can drive the worm wheel to rotate, the worm wheel cannot drive the worm 17 to rotate, a plurality of spur gears 19 are installed in the worm wheel rim 22 in an annular equidistance manner, inner teeth meshed with the spur gears 19 are uniformly and integrally arranged on the inner wall of the worm wheel rim 22, the number of the spur gears 19 is equal to that of the lifting ropes 7 and corresponds to that of the lifting ropes 7 one by one, the spur gears 19 are preferably installed in the shell through rotating shafts and bearings, the spur gears 19 are installed at the end parts of the rotating shafts, the end surfaces of the spur gears 19 are hinged with connecting rods 20, the other ends of the connecting rods 20 are hinged with the outer wall of the rope sleeve 21, two ends of the rope sleeve 21 are respectively arranged on the upper side and the lower side of the second installation shell 16 in a penetrating manner, the rope sleeve 21 is connected with the second installation shell 16 in a sliding manner, a movement groove 23 for moving the rope sleeve 21 is formed in the, the third motor 18 is started, the third motor 18 drives the worm 17 to rotate, the worm 17 drives the worm wheel ring 22 to rotate, the worm wheel ring 22 drives the straight gear 19 to rotate, the straight gear 19 drives the rope sleeve 21 to be close to each other through the connecting rod 20, the lifting rope 7 is further tightened and shrinks towards the center, therefore, on one hand, unhooking can be avoided, on the other hand, the lifting rope is more stable during lifting, and the lifting rope 7 is prevented from shaking.

Example 2

Referring to fig. 5, the embodiment of the present invention is different from embodiment 1 in that after the sectional beam is lifted to a certain height, the sectional beam is horizontally moved, in order to ensure stability of the sectional beam in the moving process, the present invention further includes a support assembly, the support assembly includes fixing rods 26, support hooks 25 and limiting blocks 24, a plurality of fixing rods 26 are circumferentially and equidistantly fixed on the bottom edge of the first mounting shell 11, the fixing rods 26 are preferably connected to the first mounting shell 11 by welding, the number of the fixing rods 26 is equal to and one-to-one corresponding to the number of the lifting ropes 7, the middle portions of the support hooks 25 are hinged to the fixing rods 26, through grooves for the lifting ropes 7 to pass through are formed in portions of the support hooks 25 close to the lifting ropes 7, the limiting blocks 24 are detachably mounted between the lifting hooks 8 and the support hooks 25 on the lifting ropes 7, and the limiting blocks 24 move upward after the sectional beam is lifted to a certain height by the lifting mechanism, the end, close to the lifting rope 7, of the support hook 25 is driven to move upwards, the end, provided with the hook, of the support hook 25 moves downwards and finally contacts with the side edge of the section beam, the section beam is enclosed through the support hooks 25, the stability of the section beam in motion is guaranteed, and safety accidents are avoided.

The working principle of the invention is as follows: when the lifting rope is used, a lifting rope 7 penetrates through the corresponding rope sleeve 21, after a lifting hook (8) hooks a section beam, the first motor 9 is started, the first motor 9 is a forward and reverse rotating motor, the first motor 9 drives the driving bevel gear 15 to rotate, the driving bevel gear 15 drives the mounting shaft 13 and the winding roller 12 to rotate through the driven bevel gear 14, so that the lifting rope 7 can be wound up, the third motor 18 is started, the third motor 18 drives the worm 17 to rotate, the worm 17 drives the worm wheel ring 22 to rotate, the worm wheel ring 22 drives the straight gear 19 to rotate, the straight gear 19 drives the rope sleeves 21 to mutually approach through the connecting rod 20, the lifting rope 7 is further tightened and contracted towards the center, and therefore, on one hand, unhooking can be avoided, on the other hand, lifting can be more stable, the lifting rope 7 is prevented from shaking, after a lifting mechanism lifts the section beam upwards to a certain height, the limiting block 24 upwards moves, the end of the support hook 25 close to the lifting rope 7 is driven to move upwards, the end of the support hook 25 with the hook moves downwards, and finally contacts with the side edge of the section beam, the section beam is surrounded through the support hooks 25, the stability of the section beam in the movement is guaranteed, safety accidents are avoided, the second motor 10 can be started, the second motor 10 drives the first installation shell 11 to move, and therefore the first installation shell 11 can drive the section beam to move horizontally.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A hoisting device for a segmental beam comprises a hoisting frame (1) and a hoisting mechanism arranged on the hoisting frame (1), wherein the hoisting mechanism comprises a plurality of lifting ropes (7), a lifting hook (8) connected to the bottom ends of the lifting ropes (7) and a power assembly (5) used for driving the lifting ropes (7) to be coiled and uncoiled, and is characterized in that a tightening assembly (6) is fixedly arranged at the bottom of the power assembly (5) of the hoisting mechanism, and the tightening assembly (6) comprises a second mounting shell (16), a worm (17), a worm gear (22), a straight gear (19), a connecting rod (20) and a rope sleeve (21) for the lifting ropes (7) to pass through;

the second installation shell (16) is fixedly connected with the bottom of the power assembly (5) through a supporting rod, a worm wheel ring (22) is installed in the second installation shell (16) in a rotating mode, a worm (17) meshed with the worm wheel ring (22) is installed on one side of the worm wheel ring in a rotating mode, one end of the worm (17) is fixedly connected with an output shaft of a third motor (18) through a coupler, a plurality of straight gears (19) are installed in the worm wheel ring (22) in a rotating mode in an inner ring direction in an equidistance rotating mode, inner teeth meshed with the straight gears (19) are evenly and integrally arranged on the inner wall of the worm wheel ring (22), the number of the straight gears (19) is equal to the number of lifting ropes (7) and corresponds to one another, the straight gears (19) are installed at the end portion of the rotating shaft, connecting rods (20) are hinged to the end face of the straight gears (19), the other ends of the connecting rods (20, the rope sling (21) is connected with the second mounting shell (16) in a sliding way, and a moving groove (23) for the rope sling (21) to move is arranged on the second mounting shell (16).

2. A segmental beam hoisting device as claimed in claim 1, characterized in that the hoisting ropes (7) are four in number.

3. The segmental beam hoisting device according to claim 1, wherein the power assembly (5) comprises a first mounting shell (11), a first motor (9), a driving bevel gear (15), a driven bevel gear (14), a mounting shaft (13) and a winding roller (12), the first mounting shell (11) is mounted on the hoisting frame (1), the first motor (9) is mounted at the bottom of the first mounting shell (11), an output shaft of the first motor (9) extends into the first mounting shell (11) and is provided with the driving bevel gear (15), a plurality of driven bevel gears (14) meshed with the driving bevel gears are annularly and equidistantly arranged above the driving bevel gears (15), the number of the driven bevel gears (14) is equal to that of the hoisting ropes (7) and corresponds to one another, and the driven bevel gears (14) are rotatably mounted in the first mounting shell (11) through the mounting shaft (13) and a bearing, a winding roller (12) for winding the lifting rope (7) is arranged on the mounting shaft (13).

4. The segmental beam hoisting device according to claim 3, wherein the first mounting shell (11) is horizontally and slidably connected with the lifting frame (1), a threaded rod (4) penetrates through the upper part of the first mounting shell (11), the first mounting shell (11) is in threaded connection with the threaded rod (4), the threaded rod (4) is rotatably mounted at the bottom of the lifting frame (1), and one end of the threaded rod (4) is fixedly connected with an output shaft of the second motor (10) through a coupler.

5. A segmental beam hoisting device as claimed in claim 4, characterized in that the second motor (10) is mounted on the hoisting frame (1).

6. The segmental beam hoisting device according to claim 4, wherein the top of the first mounting shell (11) is integrally provided with a sliding block (3), and the hoisting frame (1) is provided with a sliding groove (2) for the sliding block (3) to slide.

7. The segment beam hoisting device according to any one of claims 3 to 6, further comprising a support assembly, wherein the support assembly comprises fixing rods (26), support hooks (25) and limit blocks (24), a plurality of fixing rods (26) are fixed on the bottom edge of the first mounting shell (11) at equal intervals in the circumferential direction, the number of the fixing rods (26) is equal to that of the hoisting ropes (7) and corresponds to that of the hoisting ropes (7), the middle parts of the support hooks (25) are hinged to the fixing rods (26), through grooves for the hoisting ropes (7) to pass through are formed in the parts, close to the hoisting ropes (7), of the support hooks (25), and the limit blocks (24) are detachably mounted on the hoisting ropes (7) between the hoisting hooks (8) and the support hooks (25).