CN112723176B

CN112723176B - Large-scale case roof beam lifting device

Info

Publication number: CN112723176B
Application number: CN202011558744.7A
Authority: CN
Inventors: 刘龙军; 温向峰; 廖满平; 刘凤鸽; 李会
Original assignee: Shandong Shenzhou Steel Structure Engineering Co ltd
Current assignee: Shandong Shenzhou Steel Structure Engineering Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2023-08-01
Anticipated expiration: 2040-12-25
Also published as: CN112723176A

Abstract

The invention discloses large-scale box girder hoisting equipment, which relates to the technical field of hoisting equipment and comprises supporting legs, wherein the bottom end of a steel rope is fixedly connected with a supporting frame, the bottom end of the supporting frame is connected with a driving rod in a sliding manner, the bottom ends of the supporting frames on two sides of the driving rod are fixedly provided with supporting blocks, the inner walls of the supporting blocks and the supporting frame are fixedly provided with first sliding rods, the first sliding rods are connected with first moving blocks in a sliding manner, the bottom ends of the first moving blocks are fixedly provided with driving rods, the first grooves are internally and fixedly provided with second sliding rods, the second sliding rods are connected with supporting plates in a sliding manner, the supporting plates are fixedly provided with first contacts, the bottom ends of the first grooves are fixedly provided with second contacts corresponding to the first contacts, and the outer side walls of the supporting frames are fixedly provided with alarm devices.

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-situ box girder. The box girder combined bridge girder erection machine prefabricated in the independent place can be erected after the lower engineering is completed, so that the engineering progress can be accelerated, and the construction period can be saved; cast-in-situ box girders are mostly used for large continuous bridges. The materials are commonly divided into two types, namely a prestressed reinforced concrete box girder and a steel box girder.

The box girder is required to be moved by using large lifting equipment and then installed during installation, the box girder is large in size and weight, so that the lifting equipment has large potential safety hazards during lifting, the lifting weight is easy to exceed the limit of the equipment, the potential safety hazards of a steel rope breaking lamp are serious, the existing lifting equipment does not have a safety alarm mechanism, and an operator cannot be timely reminded.

Disclosure of Invention

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

In order to achieve the above purpose, the present invention provides the following technical solutions:

the utility model provides a large-scale case roof beam lifting device, includes the supporting leg, supporting leg upper end fixed mounting has the crossbeam, be provided with the headstock in the crossbeam, be provided with the steel cable in the headstock, steel cable bottom fixedly connected with alarm mechanism, alarm mechanism includes alarm, first contact and second contact, the bottom fixedly connected with carriage of steel cable, the bottom sliding connection of carriage has the drive pole, the bottom fixed mounting of drive pole both sides carriage has the supporting shoe, fixed mounting has first slide bar on the inner wall of supporting shoe and carriage, sliding connection has first movable block on the first slide bar, be provided with first spring on the first slide bar between first movable block and the carriage, the bottom fixed mounting of first movable block has the actuating lever, the card is equipped with first recess on the inner wall of carriage and the corresponding position of actuating lever, fixed mounting has the second slide bar in the first recess, sliding connection has first contact on the second slide bar, the second support plate has the corresponding side wall of first contact on the first recess, fixed mounting has the first contact on the second support plate.

The large-scale box girder hoisting device according to claim, wherein: the first contact, the second contact, the alarm and the external power supply are electrically connected.

The large-scale box girder hoisting device according to claim, wherein: the bottom fixed mounting who drives the pole has the connecting block, connecting block bottom fixed mounting has the couple, be provided with anti-drop mechanism in the couple, anti-drop mechanism includes dead lever, tooth and fixture block, sliding connection has the dead lever in the couple, dead lever inboard fixed mounting has the tooth, fixed mounting has first handle on the bottom of dead lever, offered the draw-in groove corresponding with the dead lever on the connecting block, the second recess has been seted up to the draw-in groove bottom, the second recess upper end rotates and is connected with the fixture block, the inside fixed mounting of second recess has the third slide bar, sliding connection has the second movable block on the third slide bar, fixed mounting has the second handle on the second movable block, be provided with the third spring on the third slide bar between second movable block and the second recess inner wall, the second movable block rotates between fixture block and is connected with the second connecting rod.

The large-scale box girder hoisting device according to claim, wherein: the hanger is hung with a clamping mechanism, the clamping mechanism comprises a clamping plate, a support frame and a telescopic rod, the clamping plate is rotationally connected to the support frame, 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 arranged at the upper end of the sliding block, a third connecting rod is rotationally connected between the third moving block and the upper end of the clamping plate, the telescopic rod is fixedly arranged 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-scale box girder hoisting device according to claim, wherein: the movable mechanism comprises a motor, a threaded rod and a fourth sliding rod, the threaded rod is rotationally connected to the cross beam, the fourth sliding rod symmetrical to the threaded rod is fixedly installed on the cross beam, a power box is connected to the threaded rod in a threaded mode, the power box is slidably connected with the fourth sliding rod, a driven gear is fixedly installed on one end, extending out of the cross beam, of the threaded rod, a motor is fixedly installed on the side wall of the cross beam, a rotating shaft is fixedly installed at the output end of the motor, a driving gear is fixedly installed on the rotating shaft, and the driving gear is meshed with the driven gear.

The large-scale box girder hoisting device according to claim, wherein: the novel telescopic lifting device is characterized in that a buffer mechanism is arranged on the inner walls of two ends of the cross beam and comprises a telescopic outer rod, a telescopic inner rod and a fourth spring, the telescopic outer rod is fixedly arranged on the inner walls of two ends of the cross beam, the telescopic inner rod is connected to the telescopic outer rod in a sliding mode, an extrusion plate is fixedly arranged on the top end of the telescopic inner rod, the fourth spring is arranged on the telescopic outer rod and the telescopic inner rod, and two ends of the fourth spring respectively abut against the extrusion plate and the inner wall of the cross beam.

The large-scale box girder hoisting device according to claim, wherein: 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, the alarm mechanism is arranged, when the hoisting equipment is hoisted, the hook is stressed to drive the driving rod to move downwards, the first moving block is pushed to move on the first sliding rod through the first connecting rod and extrude the first spring, the driving rod is driven to move while the first moving block moves on the first sliding rod, when the hoisting 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 and the second contact are contacted, the circuit of the first contact, the second contact, the alarm and an external power supply is connected, the alarm sounds to alarm, and the hoisting operation is timely stopped, so that a large hoisting accident caused by steel rope breakage due to overlarge hoisting weight of the hoisting equipment is avoided.

Drawings

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

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

Fig. 3 is an enlarged view at a in fig. 2.

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

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

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

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.

Reference numerals annotate: the device comprises a first supporting leg, a second beam, a 3-alarming mechanism, a 301-supporting frame, a 302-alarming device, a 303-driving rod, a 304-first connecting rod, a 305-supporting block, a 306-first sliding rod, a 307-first moving block, a 308-first spring, a 309-driving rod, a 310-first groove, a 311-second sliding rod, a 312-second spring, a 313-supporting plate, a 314-first contact, a 315-second contact, a 4-hook, a 5-clamping mechanism, a 501-supporting frame, a 502-clamping plate, a 503-telescopic rod, a 504-third moving block, a 505-third connecting rod, a 6-anti-slip base, a 7-steel rope, an 8-threaded rod, a 9-power box, a 10-fourth sliding rod, a 11-driven tooth, a 12-motor, a 13-rotating shaft, a 14-driving gear, a 15-telescopic outer rod, a 16-telescopic outer rod, a 17-telescopic inner rod, a 18-extruding plate, a 19-sealing rod, a 20-tooth, a 21-clamping groove, a 22-first handle, a 23-second groove, a 24-second clamping block, a 25-third connecting rod, a 6-non-slip base, a 7-steel rope, a 8-connecting rod, a 8-rotating shaft, a 9-driving gear, a 15-telescopic outer rod, a 16-telescopic outer rod, a second clamping rod, a 23-second clamping rod, a 25-second clamping block, a 25-second, a third clamping block, a third connecting rod, a 28, a third connecting rod, and a third connecting rod.

Detailed Description

The technical scheme of the patent is further described in detail below with reference to the specific embodiments.

The present invention will be described in detail below with reference to the drawings, in which like or identical parts are given the same reference numerals, and in which the shape, thickness or height of each component may be enlarged or reduced in practical use. The examples set forth herein are intended to be illustrative of the invention and are not intended to limit the scope of the invention. Any obvious modifications or alterations to the invention, as would be apparent, are made without departing from the spirit and scope of the present invention.

Referring to fig. 1-4, in an embodiment, a large-scale girder hoisting device comprises a supporting leg 1, wherein a cross beam 2 is fixedly installed on the upper end of the supporting leg 1, a power box 9 is arranged in the cross beam 2, a steel rope 7 is arranged in the power box 9, an alarm mechanism 3 is fixedly connected to the bottom of the steel rope 7, the alarm mechanism 3 comprises an alarm 302, a first contact 314 and a second contact 315, a supporting frame 301 is fixedly connected to the bottom end of the steel rope 7, a driving rod 303 is slidably connected to the bottom end of the supporting frame 301, a first sliding rod 306 is fixedly installed on the inner wall of the supporting frame 305 and the supporting frame 301, a first connecting rod 304 is rotatably connected to the first sliding rod 306, a first spring 308 is arranged on a first part 306 between the first moving block 307 and the inner wall of the supporting frame 301, a second spring 311 is fixedly connected to the bottom end of the first moving block 307, a second contact 311 is fixedly installed on the inner wall of the supporting frame 309 and a second supporting frame 310, a second contact 311 is fixedly connected to the inner wall of the supporting frame 310, a first sliding rod 310 is fixedly installed on the inner wall of the supporting frame, a second sliding rod 310 is fixedly installed on the second sliding rod 311, and a groove 310 is fixedly connected to the inner wall of the second sliding rod 310 is fixedly installed on the second sliding rod 310.

When the hoisting device is hoisted, the hook 4 is forced to drive the driving rod 303 to move downwards, the first moving block 307 is pushed to move on the first sliding rod 306 through the first connecting rod 304 and extrude the first spring 308, the first moving block 307 moves on the first sliding rod 306 and drives the driving rod 309 to move, when the hoisting weight exceeds the limit, the driving rod 309 is inserted into the first groove 310, the supporting plate 313 is pushed to move on the second sliding rod 311 and extrude the second spring 312, so that the first contact 314 is contacted with the second contact 315, the first contact 314, the second contact 315, the alarm 302 and an external power supply are connected, the alarm 302 sounds, an operator is reminded, and the hoisting operation is stopped in time, so that the hoisting device is prevented from being broken by the steel rope 7 caused by overlarge hoisting weight, and a large hoisting accident is caused.

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, a tooth 20 and a clamping block 24, the closing rod 19 is slidably connected in the hook 4, the tooth 20 is 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 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, a clamping 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 third spring 28 is disposed on the third sliding rod 26 between the second moving block 27 and the inner wall of the second groove 23, and the second sliding rod 25 is rotatably connected with the second sliding rod 24.

When the box girder 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 enable the upper end of the closing rod 19 to push into the clamping groove 21 on the connecting block 30, when the closing rod 19 is pushed into the clamping groove 21, the teeth 20 are in contact with the clamping blocks 24 and press the clamping blocks 24, the clamping blocks 24 rotate on the second grooves 23, the first connecting rod 25 pushes the second moving blocks 27 to move on the third sliding rods 26 and press the third springs 28, after the teeth 20 are separated from the clamping blocks 24, the clamping blocks 24 are reset under the action of the third springs 28, so that the closing rod 19 is clamped and fixed, and therefore hoisting accidents can be effectively avoided, when the closing rod 19 is required to be opened, the second handle 29 pulls the second moving blocks 27, so that the clamping blocks 24 are separated from the teeth 20, and the closing rod 19 can be separated from the clamping grooves 21.

Referring to fig. 7, in a preferred embodiment, the hanger 4 is suspended with a clamping mechanism 5, the clamping mechanism 5 includes a clamping plate 502, a support frame 501 and a telescopic rod 503, the support frame 501 is rotatably connected with the clamping plate 502, a chute 507 is provided at an upper end of the support frame 501, a sliding block 506 is slidably connected to the chute 507, a third moving block 504 is fixedly mounted at an upper end of the sliding block 506, a third connecting rod 505 is rotatably connected between the third moving block 504 and an upper end of the clamping plate 502, a telescopic rod 503 is fixedly mounted at an upper end of the support frame 501, and a front end of the telescopic rod 503 is fixedly connected with the third moving block 504.

In use, the telescopic rod 503 is activated, so that the third moving block 504 is pushed 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 cross 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 cross beam 2, the fourth slide rod 10 symmetrical to the threaded rod 8 is fixedly disposed on the cross beam 2, a power box 9 is screwed to the threaded rod 8, the power box 9 is slidably connected to the fourth slide rod 10, a driven gear 11 is fixedly disposed at one end of the threaded rod 8 extending out of the cross beam 2, a motor 12 is fixedly disposed on a side wall of the cross beam 2, a rotating shaft 13 is fixedly disposed at an output end of the motor 12, a driving gear 14 is fixedly disposed on the rotating shaft 13, the driving gear 14 is meshed with the driven gear 11, buffer mechanisms are disposed on inner walls at two ends of the cross beam 2, the buffer mechanisms include an outer telescopic rod 15, an inner telescopic rod 17 and a fourth spring 16, an inner telescopic rod 17 is slidably connected to the outer telescopic rod 15, an inner telescopic rod 17 is fixedly disposed on inner telescopic rod 17 at two ends of the inner telescopic rod 17, a rotating shaft 18 is fixedly disposed at an output end of the threaded rod 8, a rotating shaft 13 is fixedly disposed at an inner telescopic rod 18, and two ends of the inner telescopic rod 16 are disposed on the inner telescopic rod 16 and the inner spring 16 are disposed on the inner walls of the cross beam 2.

When the telescopic power box is used, the motor 12 is started, the driving gear 14 is driven to rotate through the rotating shaft 13, the threaded rod 8 is driven to rotate through the meshed driven gear 11, the power box 9 is driven to move left and right on the fourth sliding rod 10, the hoisted box Liang Shixian is driven to move left and right, the telescopic power box is better installed, when the power box 9 moves to the leftmost end and the leftmost end, the power box 9 is in contact with the extruding plate 18 and is extruded, the telescopic inner rod 17 slides on the telescopic outer rod 15, the fourth spring 16 is extruded, and under the action of the fourth spring 16, the power box 9 is buffered, so that the impact between the power box 9 and the cross beam 2 is avoided, and equipment is damaged.

Further, the bottom end of the supporting leg 1 is fixedly provided with an anti-skid base 6, and the anti-skid 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 characteristics 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 disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to 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), a supporting frame (301) is fixedly connected to the bottom end of a steel rope (7), a driving rod (303) is slidably connected to the bottom end of the supporting frame (301), supporting blocks (305) are fixedly arranged at the bottom ends of the supporting frames (301) on two sides of the driving rod (303), first sliding rods (306) are fixedly arranged on the inner walls of the supporting blocks (305) and the supporting frame (301), first moving blocks (307) are slidably connected to the first sliding rods (306), first connecting rods (304) are rotatably connected between the first moving blocks (307) and the driving rod (303), first springs (308) are arranged on the first sliding rods (306) between the first moving blocks (307) and the inner walls of the supporting frame (301), driving rods (309) are fixedly arranged at the bottom ends of the first moving blocks (307), first grooves (310) are reserved on the inner walls of the supporting frame (301) in a clamping mode corresponding to the driving rods (309), first grooves (310) are reserved between the first grooves (311) and second grooves (310) are reserved on the second supporting plates (311), a first contact (314) is fixedly arranged on the supporting plate (313), a second contact (315) corresponding to the first contact (314) is fixedly arranged at the bottom end of the first groove (310), and an alarm (302) is fixedly arranged on the outer side wall of the supporting frame (301);

the utility model discloses a connecting rod, including connecting block (30), connecting block (30) bottom fixed mounting has couple (4), be provided with anti-drop mechanism in couple (4), anti-drop mechanism includes dead lever (19), tooth (20) and fixture block (24), sliding connection has dead lever (19) in couple (4), dead lever (19) inboard fixed mounting has tooth (20), dead lever (19) bottom is last fixed mounting has first handle (22), set up draw-in groove (21) corresponding with dead lever (19) on connecting block (30), second recess (23) have been seted up to draw-in groove (21) bottom, second recess (23) upper end rotation is connected with slide bar (24), inside fixed mounting of second recess (23) has third slide bar (26), sliding connection has second movable block (27) on second movable block (27), fixed mounting has second handle (29) on second movable block (27), second movable block (27) have second slide bar (27) and second slide bar (24) to rotate between the second slide bar (27), second slide bar (24) and third slide bar (25).

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

3. The large box girder hoisting device according to claim 2, wherein: the utility model discloses a couple has hung fixture (5) on couple (4), fixture (5) are including grip block (502), support frame (501) and telescopic link (503), rotate on support frame (501) and be connected with grip block (502), spout (507) have been seted up to support frame (501) upper end, sliding connection has slider (506) on spout (507), slider (506) upper end fixed mounting has third movable block (504), the upper end rotation of third movable block (504) and grip block (502) is connected with third connecting rod (505), support frame (501) upper end fixed mounting has telescopic link (503), the front end and the third movable block (504) fixed connection of telescopic link (503).

4. The large box girder hoisting device according to claim 1, wherein: be provided with moving mechanism in crossbeam (2), moving mechanism includes motor (12), threaded rod (8) and fourth slide bar (10), rotate on crossbeam (2) and be connected with threaded rod (8), fixed mounting has fourth slide bar (10) with threaded rod (8) symmetry on crossbeam (2), threaded connection has headstock (9) on threaded rod (8), headstock (9) and fourth slide bar (10) sliding connection, fixed mounting has driven gear (11) on the one end that threaded rod (8) stretched out crossbeam (2), fixed mounting has motor (12) on crossbeam (2) lateral wall, the output fixed mounting of motor (12) has axis of rotation (13), fixed mounting has driving gear (14) on axis of rotation (13), driving gear (14) and driven gear (11) meshing.

5. The large box girder hoisting device according to claim 4, wherein: the novel telescopic lifting device is characterized in that a buffer mechanism is arranged on the inner walls of two ends of the cross beam (2), the buffer mechanism comprises a telescopic outer rod (15), a telescopic inner rod (17) and a fourth spring (16), the telescopic outer rod (15) is fixedly arranged on the inner walls of two ends of the cross beam (2), the telescopic inner rod (17) is connected to the telescopic outer rod (15) in a sliding mode, an extrusion plate (18) is fixedly arranged at the top end of the telescopic inner rod (17), the fourth spring (16) is arranged on the telescopic outer rod (15) and the telescopic inner rod (17), and two ends of the fourth spring (16) respectively abut against the extrusion plate (18) and the inner wall of the cross beam (2).

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