CN112723176A

CN112723176A - Large-scale case roof beam lifting device

Info

Publication number: CN112723176A
Application number: CN202011558744.7A
Authority: CN
Inventors: 刘龙军; 温向峰; 廖满平; 刘凤鸽; 李会
Original assignee: China Construction Second Engineering Bureau Civil Engineering Group Co Ltd
Current assignee: Shandong Shenzhou Steel Structure Engineering Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-04-30
Anticipated expiration: 2040-12-25
Also published as: CN112723176B

Abstract

The invention discloses large box girder hoisting equipment, which relates to the technical field of hoisting equipment and comprises a supporting leg, wherein the bottom end of a steel rope is fixedly connected with a supporting frame, the bottom end of the supporting frame is slidably connected with a driving rod, supporting blocks are fixedly arranged at the bottom ends of the supporting frames at two sides of the driving rod, a first sliding rod is fixedly arranged on the supporting blocks and the inner wall of the supporting frame, a first moving block is slidably connected onto the first sliding rod, a driving rod is fixedly arranged at the bottom end of the first moving block, a second sliding rod is fixedly arranged in a first groove, a supporting plate is slidably connected onto the second sliding rod, a first contact is fixedly arranged on the supporting plate, a second contact corresponding to the first contact is fixedly arranged at the bottom end of the first groove, an alarm is fixedly arranged on the outer side wall of the supporting frame, and an alarm mechanism is arranged to remind an operator, and the hoisting operation is stopped in time, so that a large hoisting accident is avoided.

Description

Large-scale case roof beam lifting device

Technical Field

The invention relates to the technical field of hoisting equipment, in particular to large box girder hoisting equipment.

Background

The box girder 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. The common materials are divided into two types, namely a prestressed reinforced concrete box girder and a steel box girder.

The box girder needs to be moved and then installed by large-scale hoisting equipment when being installed, the size and the weight of the box girder are large, so that the hoisting equipment has large potential safety hazards when being hoisted, the hoisting weight is easy to exceed the limit of the equipment, the potential safety hazards that steel rope breakage lamps are serious are caused, the existing hoisting equipment is not provided with a safety alarm mechanism, and an operator cannot be reminded timely.

Disclosure of Invention

The invention aims to provide large box girder hoisting equipment to solve the problems in the background technology.

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

a large box girder hoisting device comprises supporting legs, wherein the upper ends of the supporting legs are fixedly provided with crossbeams, power boxes are arranged in the crossbeams, steel ropes are arranged in the power boxes, the bottoms of the steel ropes are fixedly connected with alarm mechanisms, each alarm mechanism comprises an alarm, a first contact and a second contact, the bottom ends of the steel ropes are fixedly connected with supporting frames, the bottom ends of the supporting frames are slidably connected with driving rods, supporting blocks are fixedly arranged at the bottom ends of the supporting frames at the two sides of each driving rod, first sliding rods are fixedly arranged on the inner walls of the supporting blocks and the supporting frames, first movable blocks are slidably connected onto the first sliding rods, first connecting rods are rotatably connected between the first movable blocks and the driving rods, first springs are arranged on the first sliding rods between the first movable blocks and the inner walls of the supporting frames, and driving rods are fixedly arranged at the bottom ends of, the utility model discloses a support frame, including the bracing frame, the bracing frame is provided with the actuating lever on the inner wall, the position that corresponds with the actuating lever is gone up the card and is equipped with first recess, fixed mounting has the second slide bar in the first recess, sliding connection has the backup pad on the second slide bar, be provided with the second spring on the second slide bar between backup pad and the first recess bottom, fixed mounting has first contact in the backup pad, the bottom fixed mounting of first recess has the second contact corresponding with first contact, fixed mounting has the alarm on the lateral wall of bracing frame.

The large box girder hoisting equipment of claim, characterized in that: the first contact, the second contact, the alarm and the external power supply are electrically connected.

The large box girder hoisting equipment of claim, characterized in that: the bottom end of the driving rod is fixedly provided with a connecting block, the bottom end of the connecting block is fixedly provided with a hook, an anti-falling mechanism is arranged in the hook and comprises a sealing rod, teeth and a clamping block, a sealing rod is connected in the hook in a sliding manner, teeth are fixedly arranged on the inner side of the sealing rod, a first handle is fixedly arranged on the bottom end of the sealing rod, the connecting block is provided with a clamping groove corresponding to the sealing rod, the bottom of the clamping groove is provided with a second groove, the upper end of the second groove is rotatably connected with a clamping block, a third sliding rod is fixedly arranged in the second groove, a second moving block is connected to the third slide bar in a sliding manner, a second handle is fixedly arranged on the second moving block, a third spring is arranged on a third sliding rod between the second moving block and the inner wall of the second groove, and a second connecting rod is rotatably connected between the second moving block and the clamping block.

The large box girder hoisting equipment of claim, characterized in that: the clamping mechanism is hung on the hook and comprises a clamping plate, a support frame and a telescopic rod, the clamping plate is connected to the support frame in a rotating mode, a sliding groove is formed in the upper end of the support frame, a sliding block is connected to the sliding groove in a sliding mode, a third moving block is fixedly mounted at the upper end of the sliding block, a third connecting rod is connected between the third moving block and the upper end of the clamping plate in a rotating mode, the telescopic rod is fixedly mounted at the upper end of the support frame, and the front end of the telescopic rod is fixedly connected with the third moving block.

The large box girder hoisting equipment of claim, characterized in that: be provided with the moving mechanism in the crossbeam, the moving mechanism includes motor, threaded rod and fourth slide bar, the last swivelling joint of crossbeam has the threaded rod, fixed mounting has the fourth slide bar of symmetry with the threaded rod on the crossbeam, threaded connection has the headstock on the threaded rod, headstock and fourth slide bar sliding connection, the threaded rod stretches out one of crossbeam and serves fixed mounting have driven gear, fixed mounting has the motor on the crossbeam lateral wall, the output fixed mounting of motor has the axis of rotation, fixed mounting has the driving gear in the axis of rotation, driving gear and driven gear meshing.

The large box girder hoisting equipment of claim, characterized in that: be provided with buffer gear on the inner wall of crossbeam both ends, buffer gear is including flexible outer pole, flexible interior pole and fourth spring, fixed mounting has flexible outer pole on the inner wall of crossbeam both ends, sliding connection has flexible interior pole on the flexible outer pole, the top fixed mounting of flexible interior pole has the stripper plate, be provided with the fourth spring on flexible outer pole and the flexible interior pole, the inner wall of stripper plate and crossbeam is supported respectively at the both ends of fourth spring.

The large box girder hoisting equipment of claim, characterized in that: the bottom fixed mounting of supporting leg has anti-skidding base.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, by arranging the alarm mechanism, when the hoisting equipment is hoisted, the hook is forced to drive the driving rod to move downwards, the first moving block is pushed to move on the first sliding rod and extrude the first spring through the first connecting rod, the driving rod is driven to move while the first moving block moves on the first sliding rod, when the hoisted weight exceeds the limit, the driving rod is inserted into the first groove, the supporting plate is pushed to move on the second sliding rod and extrude the second spring, so that the first contact is contacted with the second contact, the circuit of the first contact, the second contact, the alarm and an external power supply is connected, the alarm sounds to give an alarm, an operator is reminded, the hoisting operation is stopped in time, and the hoisting equipment is prevented from being broken due to the overhigh weight of the hoisting equipment, so that a large hoisting accident is caused.

Drawings

Fig. 1 is a schematic structural diagram of a large box girder hoisting device.

Fig. 2 is a schematic structural diagram of the alarm mechanism.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is an enlarged view of fig. 3 at B.

Fig. 5 is a schematic structural view of the anti-drop mechanism.

Fig. 6 is an enlarged view of fig. 5 at C.

Fig. 7 is a schematic structural view of the clamping mechanism.

Fig. 8 is a schematic view of the internal structure of the cross beam.

Notations for reference numerals: 1-supporting leg, 2-crossbeam, 3-alarm mechanism, 301-supporting frame, 302-alarm, 303-driving rod, 304-first connecting rod, 305-supporting block, 306-first sliding rod, 307-first moving block, 308-first spring, 309-driving rod, 310-first groove, 311-second sliding rod, 312-second spring, 313-supporting plate, 314-first contact, 315-second contact, 4-hook, 5-clamping mechanism, 501-supporting frame, 502-clamping plate, 503-telescopic rod, 504-third moving block, 505-third connecting rod, 6-anti-skidding base, 7-steel rope, 8-threaded rod, 9-power box, 10-fourth sliding rod, 11-driven tooth, 12-motor, 13-rotating shaft, 14-driving gear, 15-telescopic outer rod, 16-telescopic outer rod, 17-telescopic inner rod, 18-extrusion plate, 19-sealing rod, 20-tooth, 21-clamping groove, 22-first handle, 23-second groove, 24-clamping block, 25-second connecting rod, 26-third sliding rod, 27-second moving block, 28-third spring, 29-second handle and 30-connecting block.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

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.

Referring to fig. 1-4, in an embodiment, a large box girder hoisting device includes a supporting leg 1, a beam 2 is fixedly installed at an upper end of the supporting leg 1, a power box 9 is installed in the beam 2, a steel cable 7 is installed in the power box 9, an alarm mechanism 3 is fixedly connected to a bottom of the steel cable 7, the alarm mechanism 3 includes an alarm 302, a first contact 314 and a second contact 315, a supporting frame 301 is fixedly connected to a bottom end of the steel cable 7, a driving rod 303 is slidably connected to a bottom end of the supporting frame 301, supporting blocks 305 are fixedly installed at bottom ends of the supporting frames 301 on two sides of the driving rod 303, a first sliding rod 306 is fixedly installed on the supporting blocks 305 and an inner wall of the supporting frame 301, a first moving block 307 is slidably connected to the first sliding rod 306, a first connecting rod 304 is rotatably connected between the first moving block 307 and the driving rod 303, a first spring 308 is arranged on a first sliding rod 306 between the first moving block 307 and the inner wall of the supporting frame 301, a driving rod 309 is fixedly mounted at the bottom end of the first moving block 307, a first groove 310 is clamped on the inner wall of the supporting frame 301 at a position corresponding to the driving rod 309, a second sliding rod 311 is fixedly mounted in the first groove 310, a supporting plate 313 is connected onto the second sliding rod 311 in a sliding manner, a second spring 312 is arranged on the second sliding rod 311 between the supporting plate 313 and the bottom end of the first groove 310, a first contact 314 is fixedly mounted on the supporting plate 313, a second contact 315 corresponding to the first contact 314 is fixedly mounted at the bottom end of the first groove 310, an alarm 302 is fixedly mounted on the outer side wall of the supporting frame 301, and the first contact 314, the second contact 315, the alarm 302 and an external power supply are electrically connected.

When the hoisting equipment is hoisting, the hook 4 is forced to drive the driving rod 303 to move downwards, and through the first connecting rod 304, thereby pushing the first moving block 307 to move on the first sliding bar 306 and pressing the first spring 308, the first moving block 307 moves on the first sliding bar 306 and simultaneously drives the driving rod 309 to move, when the hoisted weight exceeds the limit, the driving bar 309 is inserted into the first groove 310, and pushes the supporting plate 313 to move on the second slide bar 311 and press the second spring 312, thereby bringing the first contact 314 and the second contact 315 into contact, thereby completing the circuit of the first contact 314, the second contact 315, the alarm 302 and the external power source, thereby causing the alarm 302 to sound an alarm, reminding an operator, stopping the hoisting operation in time, thereby avoiding the hoisting equipment from causing great hoisting accidents due to the fracture of the steel rope 7 caused by overlarge hoisting weight.

Referring to fig. 5 and 6, in a preferred embodiment, a connecting block 30 is fixedly mounted at the bottom end of the driving rod 303, a hook 4 is fixedly mounted at the bottom end of the connecting block 30, an anti-falling mechanism is disposed in the hook 4, the anti-falling mechanism includes a closing rod 19, teeth 20 and a fixture block 24, the closing rod 19 is slidably connected in the hook 4, the teeth 20 are fixedly mounted at the inner side of the closing rod 19, a first handle 22 is fixedly mounted at the bottom end of the closing rod 19, a slot 21 corresponding to the closing rod 19 is formed in the connecting block 30, a second groove 23 is formed at the bottom of the slot 21, the fixture block 24 is rotatably connected at the upper end of the second groove 23, a third sliding rod 26 is fixedly mounted in the second groove 23, a second moving block 27 is slidably connected on the third sliding rod 26, a second handle 29 is fixedly mounted on the second moving block 27, a third spring 28 is arranged on a third sliding rod 26 between the second moving block 27 and the inner wall of the second groove 23, and a second connecting rod 25 is rotatably connected between the second moving block 27 and the fixture block 24.

When in use, after a box girder needing to be hoisted is hung on the hook 4, the first handle 22 pushes the closing rod 19 to slide in the hook 4 and the upper end of the closing rod 19 is pushed into the clamping groove 21 on the connecting block 30, when the closing rod 19 is pushed into the clamping groove 21, the tooth 20 contacts with the block 24 and presses the block 24, the block 24 rotates on the second groove 23, the second moving block 27 is pushed by the first connecting rod 25 to move on the third slide bar 26 and press the third spring 28, and after the teeth 20 are disengaged from the blocks 24, under the action of the third spring 28, the latch 24 is restored, so as to latch and fix the closing rod 19, therefore, the device can be effectively prevented from falling off during hoisting, which causes hoisting accidents, when the closing rod 19 needs to be opened, the second moving block 27 is pulled through the second handle 29, so that the latch 24 is disengaged from the tooth 20 and the closing rod 19 can be disengaged from the notch 21.

Referring to fig. 7, in a preferred embodiment, a clamping mechanism 5 is suspended on the hook 4, the clamping mechanism 5 includes a clamping plate 502, a supporting frame 501 and an expansion link 503, the clamping plate 502 is rotatably connected to the supporting frame 501, a sliding groove 507 is formed in the upper end of the supporting frame 501, a sliding block 506 is slidably connected to the sliding groove 507, a third moving block 504 is fixedly mounted on the upper end of the sliding block 506, a third connecting rod 505 is rotatably connected between the third moving block 504 and the upper end of the clamping plate 502, the expansion link 503 is fixedly mounted on the upper end of the supporting frame 501, and the front end of the expansion link 503 is fixedly connected to the third moving block 504.

In use, the telescopic rod 503 is started to push the third moving block 504 to move in the sliding groove 507 through the sliding block 506, and the clamping plate 502 is pushed to rotate on the supporting frame 501 through the third connecting rod 505, so that the box girder is clamped.

Referring to fig. 8, in a preferred embodiment, a moving mechanism is disposed in the beam 2, the moving mechanism includes a motor 12, a threaded rod 8 and a fourth slide rod 10, the threaded rod 8 is rotatably connected to the beam 2, the fourth slide rod 10 symmetrical to the threaded rod 8 is fixedly mounted on the beam 2, a power box 9 is threadedly connected to the threaded rod 8, the power box 9 is slidably connected to the fourth slide rod 10, a driven gear 11 is fixedly mounted on one end of the threaded rod 8 extending out of the beam 2, the motor 12 is fixedly mounted on a side wall of the beam 2, a rotating shaft 13 is fixedly mounted at an output end of the motor 12, a driving gear 14 is fixedly mounted on the rotating shaft 13, the driving gear 14 is engaged with the driven gear 11, buffer mechanisms are disposed on inner walls of two ends of the beam 2, and each buffer mechanism includes a telescopic outer rod 15, a telescopic outer, Bar 17 and fourth spring 16 in the stretching out and drawing back, fixed mounting has outer pole 15 of stretching out and drawing back on the 2 both ends inner walls of crossbeam, sliding connection has the bar 17 in the stretching out and drawing back on the outer pole 15 of stretching out and drawing back, the top fixed mounting of bar 17 in the stretching out and drawing back has stripper plate 18, be provided with fourth spring 16 on outer pole 15 of stretching out and drawing back and the bar 17 in the stretching out and drawing back, the inner wall that stripper plate 18 and crossbeam 2 were supported respectively at the both ends of fourth spring 16.

When using, starter motor 12, through axis of rotation 13, thereby drive driving gear 14 and rotate, driven gear 11 through the meshing, thereby drive threaded rod 8 and rotate, thereby drive headstock 9 and remove about on fourth slide bar 10, thereby it removes to drive the case roof beam realization of hoist and mount, thereby install better, when headstock 9 removes to leftmost end and left and right ends, headstock 9 contacts and extrudees with stripper plate 18, thereby make flexible interior pole 17 slide on flexible outer pole 15, thereby extrude fourth spring 16, under the effect of fourth spring 16, thereby play the cushioning effect to headstock 9, thereby avoid headstock 9 and crossbeam 2 to strike, cause the damage of equipment.

Further, the bottom end of the supporting leg 1 is fixedly provided with an antiskid base 6, and the antiskid base 6 is arranged, so that the device is prevented from sliding when in use.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a large-scale case roof beam lifting device, includes supporting leg (1), supporting leg (1) upper end fixed mounting has crossbeam (2), be provided with headstock (9) in crossbeam (2), be provided with steel cable (7) in headstock (9), steel cable (7) bottom fixedly connected with alarm mechanism (3), its characterized in that: the alarm mechanism (3) comprises an alarm (302), a first contact (314) and a second contact (315), the bottom end of the steel rope (7) is fixedly connected with a supporting frame (301), the bottom end of the supporting frame (301) is connected with a driving rod (303) in a sliding manner, supporting blocks (305) are fixedly installed at the bottom ends of the supporting frames (301) on the two sides of the driving rod (303), a first sliding rod (306) is fixedly installed on the inner walls of the supporting blocks (305) and the supporting frame (301), a first moving block (307) is connected onto the first sliding rod (306) in a sliding manner, a first connecting rod (304) is rotatably connected between the first moving block (307) and the driving rod (303), a first spring (308) is arranged on the first sliding rod (306) between the first moving block (307) and the inner wall of the supporting frame (301), and a driving rod (309) is fixedly installed at the bottom end of the first moving block (307, the utility model discloses a support frame, including support frame (301), the card is equipped with first recess (310) on the inner wall of support frame (301) and the corresponding position of actuating lever (309), fixed mounting has second slide bar (311) in first recess (310), sliding connection has backup pad (313) on second slide bar (311) between backup pad (313) and first recess (310) bottom, be provided with second spring (312) on second slide bar (311), fixed mounting has first contact (314) on backup pad (313), the bottom fixed mounting of first recess (310) has second contact (315) corresponding with first contact (314), fixed mounting has alarm (302) on the lateral wall of support frame (301).

2. The large box girder hoisting equipment according to claim 1, characterized in that: the first contact (314), the second contact (315), the alarm (302) and an external power supply are electrically connected.

3. The large box girder hoisting equipment according to claim 2, wherein: the bottom end of the driving rod (303) is fixedly provided with a connecting block (30), the bottom end of the connecting block (30) is fixedly provided with a hook (4), an anti-falling mechanism is arranged in the hook (4) and comprises a closing rod (19), teeth (20) and a clamping block (24), the closing rod (19) is connected in the hook (4) in a sliding manner, the teeth (20) are fixedly arranged on the inner side of the closing rod (19), a first handle (22) is fixedly arranged on the bottom end of the closing rod (19), a clamping groove (21) corresponding to the closing rod (19) is formed in the connecting block (30), a second groove (23) is formed in the bottom of the clamping groove (21), the clamping block (24) is rotatably connected to the upper end of the second groove (23), a third sliding rod (26) is fixedly arranged in the second groove (23), a second moving block (27) is connected on the third sliding rod (26) in, a second handle (29) is fixedly mounted on the second moving block (27), a third spring (28) is arranged on a third sliding rod (26) between the second moving block (27) and the inner wall of the second groove (23), and a second connecting rod (25) is rotatably connected between the second moving block (27) and the clamping block (24).

4. The large box girder hoisting equipment according to claim 3, wherein: the clamping mechanism (5) is hung on the hook (4), the clamping mechanism (5) comprises a clamping plate (502), a supporting frame (501) and a telescopic rod (503), the clamping plate (502) is connected to the supporting frame (501) in a rotating mode, a sliding groove (507) is formed in the upper end of the supporting frame (501), a sliding block (506) is connected to the sliding groove (507) in a sliding mode, a third moving block (504) is fixedly mounted at the upper end of the sliding block (506), a third connecting rod (505) is connected between the third moving block (504) and the upper end of the clamping plate (502) in a rotating mode, the telescopic rod (503) is fixedly mounted at the upper end of the supporting frame (501), and the front end of the telescopic rod (503) is fixedly connected with the third.

5. The large box girder hoisting equipment according to claim 1, characterized in that: a moving mechanism is arranged in the beam (2), the moving mechanism comprises a motor (12), a threaded rod (8) and a fourth sliding rod (10), a threaded rod (8) is rotatably connected on the cross beam (2), a fourth sliding rod (10) which is symmetrical to the threaded rod (8) is fixedly arranged on the cross beam (2), the threaded rod (8) is in threaded connection with a power box (9), the power box (9) is in sliding connection with a fourth sliding rod (10), a driven gear (11) is fixedly arranged on one end of the threaded rod (8) extending out of the cross beam (2), a motor (12) is fixedly arranged on the side wall of the cross beam (2), a rotating shaft (13) is fixedly arranged at the output end of the motor (12), a driving gear (14) is fixedly mounted on the rotating shaft (13), and the driving gear (14) is meshed with the driven gear (11).

6. The large box girder hoisting equipment according to claim 5, wherein: be provided with buffer gear on crossbeam (2) both ends inner wall, buffer gear is including flexible outer pole (15), flexible interior pole (17) and fourth spring (16), fixed mounting has flexible outer pole (15) on crossbeam (2) both ends inner wall, sliding connection has flexible interior pole (17) on flexible outer pole (15), the top fixed mounting of flexible interior pole (17) has stripper plate (18), be provided with fourth spring (16) on flexible outer pole (15) and flexible interior pole (17), the inner wall that stripper plate (18) and crossbeam (2) are supported respectively at the both ends of fourth spring (16).

7. The large box girder hoisting equipment according to claim 1, characterized in that: the bottom end of the supporting leg (1) is fixedly provided with an anti-skid base (6).