CN115872270A - Concrete precast box girder lifting appliance with leveling function - Google Patents

Abstract

The invention relates to the field of box girder hoisting equipment, in particular to a concrete precast box girder hoisting tool with a leveling function, which comprises a cross beam, wherein hoisting rings are respectively arranged at four top corners on the cross beam, a mounting column is rotatably arranged on the cross beam, four wire reels are rotatably sleeved on the mounting column, a hoisting rope is wound on each wire reel, a supporting column is also arranged on the cross beam, four electric self-locking devices electrically connected to a control system are vertically arranged on the supporting column, one end of each hoisting rope penetrates through the corresponding hoisting ring, and the other end of each hoisting rope penetrates through the corresponding electric self-locking device; still be provided with the fixed column on the crossbeam, be provided with on the fixed column with every lifting rope one-to-one first leveling subassembly, first leveling subassembly includes that the coaxial and rotation cover of a plurality of establishes the carousel on the fixed column, all circumference is provided with a plurality of links on the lateral wall of every carousel, is equipped with the couple that is used for the hookup on the link that corresponds first leveling subassembly on the lifting rope. This application has the advantage that can realize the leveling to the case roof beam.

Description

Concrete precast box girder lifting appliance with leveling function

Technical Field

The invention relates to the field of box girder hoisting equipment, in particular to a concrete precast box girder hoisting tool with a leveling function.

Background

The box girder is one of the girders in the bridge engineering, has a hollow interior, can be prefabricated in advance in a factory and then transported to a construction site for assembly, and has the advantages of accelerating the engineering progress, saving the construction period and the like.

Chinese patent No. CN107215773B discloses a concrete precast box girder lifting appliance, which comprises a cross beam, wherein two vertical positioning through holes are arranged on the cross beam; the two ends of the cross beam are respectively connected with a vertical beam arranged below the cross beam, an extrusion block arranged below the cross beam is arranged on the vertical beam, a vertical through hole matched with the vertical beam is arranged on the extrusion block, and the vertical beam is inserted into the vertical through hole of the extrusion block through the lower end of the vertical beam. The extrusion block is provided with a fixing hole which is positioned right below the positioning through hole.

The box girder hoisting process is inevitable to incline, but the sling is difficult to level the inclined box girder, so that the box girder hoisting effect is poor, and the defects are obvious.

Disclosure of Invention

In order to improve the problem that the hoist is difficult to realize the leveling to the case roof beam, this application provides a precast concrete case roof beam hoist with leveling function.

The application provides a precast concrete case roof beam hoist with leveling function adopts following technical scheme:

the utility model provides a precast concrete case roof beam hoist with leveling function, includes the crossbeam, four apex angle departments on the crossbeam are equipped with rings respectively, it is provided with the erection column to rotate on the crossbeam, it is equipped with four wire reels to rotate the cover on the erection column, every all around rolling up there being the lifting rope on the wire reel, still be equipped with the support column on the crossbeam, vertically on the support column be provided with four electricity and connect in control system's electronic auto-lock ware, one the lifting rope corresponds one rings and one electronic auto-lock ware, the one end of lifting rope is passed and is corresponded rings, the other end pass corresponding electronic auto-lock ware.

Through adopting above-mentioned technical scheme, the hoist crane passes through the lifting rope and hangs the case roof beam, and later the workman detects whether the case roof beam takes place slope, incline direction and inclination through check out test set. And then the locking of the electric self-locking device to the lifting rope is released through the control system, the electric self-locking device moves relative to the electric self-locking device, and the electric self-locking device restores the locking of the lifting rope after the box girder is kept horizontal. Through foretell mode, can realize the leveling to the case roof beam to this hoist and mount effect that has improved the hoist to the case roof beam.

Optionally, the cross beam is further provided with a mounting seat, the mounting seat is provided with a motor electrically connected to the control system, and an output shaft of the motor penetrates through the mounting seat and is coaxially connected to the end of the mounting column.

Through adopting above-mentioned technical scheme, accomplish the hoist and mount back to the case roof beam when the hoist, control system starts motor, and the output shaft of motor drives the erection column and rotates, and the erection column drives the wire reel through the friction and rotates to this realizes the rolling to the lifting rope who unreels, has made things convenient for the transportation of hoist with this.

Optionally, still be provided with the fixed column on the crossbeam, be provided with on the fixed column with every the first leveling subassembly of lifting rope one-to-one, first leveling subassembly includes that a plurality of is coaxial and rotate the cover and establish carousel on the fixed column, the same group first leveling subassembly corresponds a plurality of the diameter of carousel along the axis direction grow gradually of fixed column, every equal circumference is provided with a plurality of links on the lateral wall of carousel, be equipped with on the lifting rope and be used for articulate corresponding first leveling subassembly couple on the link.

Through adopting above-mentioned technical scheme, the workman calculates the length that every lifting rope need unreel according to the slope condition of case roof beam in advance, then hangs the couple on the link of suitable carousel for the lifting rope keeps the tensioning, and later electronic auto-lock ware removes the locking to the lifting rope, and the effort of case roof beam makes many lifting ropes move simultaneously, and the corresponding carousel of lifting rope pulling rotates, and the lifting rope of coiling on the carousel is pulled out completely, and later electronic auto-lock ware locks the lifting rope again.

Optionally, four second leveling assemblies are further arranged between the supporting column and the fixing column, one lifting rope corresponds to one second leveling assembly, the second leveling assemblies are matched with at least one transition rod on the cross beam in an inserting mode, and the lifting rope sequentially winds each corresponding transition rod.

By adopting the technical scheme, a worker pulls out one transition rod of each second leveling component, and the released length of the transition rod can be used for realizing leveling again. According to the arrangement of the second leveling assembly, a worker can level the box girder for multiple times, so that the leveling accuracy of the box girder is improved.

Optionally, the diameter of at least one transition rod of the second leveling assembly of the same group is gradually reduced along the direction from the fixing column to the supporting column.

By adopting the technical scheme, the length of the transition rod which is pulled out to release the lifting rope is gradually shortened along with the progress of multiple leveling, so that the error in the leveling process is favorably reduced.

Optionally, the transition rod is in running fit with the cross beam.

By adopting the technical scheme, in the leveling process, the unreeling of the lifting rope drives the transition rod to rotate, so that the possibility of damage of the lifting rope and the transition rod due to abrasion is reduced.

Optionally, a balance seat is arranged between the supporting column and the fixing column, and the top end of each transition rod penetrates through the balance seat in a sliding manner.

By adopting the technical scheme, the balance seat can play a certain role in restraining and supporting the transition rod, and the possibility of damage caused by bending deformation of the tension force of the transition rod is reduced.

Optionally, the number of turns of the lifting rope on at least one of the transition rods of the second leveling assemblies in the same group is gradually reduced along the direction from the fixed column to the supporting column.

By adopting the technical scheme, the effect that the length of the corresponding lifting rope released from the transition rod is shorter and shorter during multiple leveling can be achieved, and the error of multiple leveling results is gradually reduced, so that the leveling effect on the cross beam is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the box girder is lifted by the crane through the lifting rope, and then a worker detects whether the box girder is inclined, the inclined direction and the inclined angle through the detection equipment. And then the locking of the electric self-locking device to the lifting rope is released through the control system, the electric self-locking device moves relative to the electric self-locking device, and the electric self-locking device restores the locking of the lifting rope again after the box girder is kept horizontal. By the mode, the box girder can be leveled, so that the hoisting effect of the hoisting tool on the box girder is improved;

2. the worker pulls out one transition bar of each second leveling assembly, and the released length of the transition bar can be used again for leveling. According to the arrangement of the second leveling assembly, a worker can level the box girder for multiple times, so that the leveling accuracy of the box girder is improved.

Drawings

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

Fig. 2 is an exploded view of the individual wire reels in example 1 of the present application.

Fig. 3 is an exploded view of the balance base and the transition rod holder according to embodiment 1 of the present application.

Fig. 4 is a schematic structural diagram between a transition rod and a lifting rope in embodiment 2 of the present application.

Description of reference numerals: 1. a cross beam; 2. a hoisting ring; 3. mounting a column; 4. a wire spool; 5. a lifting rope; 6. a support pillar; 7. an electric self-locking device; 8. a mounting base; 9. a motor; 10. fixing a column; 11. a turntable; 12. hanging a ring; 13. hooking; 14. a transition rod; 15. a balance seat.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses precast concrete case roof beam hoist with leveling function.

Example 1

Referring to fig. 1 and 2, the concrete precast box girder lifting appliance with the leveling function comprises a cross beam 1, and lifting rings 2 are welded at four top corners of the upper surface of the cross beam 1 respectively.

The central point of crossbeam 1 upper surface puts and has arranged vertical erection column 3, and the bottom of erection column 3 rotates and penetrates in crossbeam 1. The rotating sleeve on the erection column 3 is provided with four wire reels 4, and each wire reel 4 is wound with a lifting rope 5.

The position of crossbeam 1 upper surface opposite erection column 3 other still welds the support column 6 of vertical setting, and the bolt has four vertically distributed's electronic auto-locks 7 on the support column 6, and electronic auto-locks 7 electricity is connected in control system.

One lifting rope 5 corresponds to one lifting ring 2 and one electric self-locking device 7, one end of the lifting rope 5 penetrates through the corresponding lifting ring 2 and is connected to a hoisting crane in the prior art, and the other end of the lifting rope penetrates through the corresponding electric self-locking device 7.

Referring to fig. 1 and 2, during hoisting, the electric self-locking device 7 locks the lifting ropes 5, so that the crane hoists the beam 1 through the four lifting ropes 5, thereby hoisting the box beam.

In the hoisting process, workers detect whether the cross beam 1 inclines or not, the inclination direction and the inclination angle through the detection equipment, so that the leveling of the cross beam 1 is realized according to the information, and the adjustment of the levelness of the cross beam 1 is just the adjustment of the levelness of the box girder.

When the lifting rope is adjusted, a worker releases the locking of the electric self-locking device 7 to the lifting rope 5 through the control system, so that the lifting rope 5 and the electric self-locking device 7 move relatively before acting force of the cross beam 1 on the lifting rope 5, and the wire spool 4 rotates. After the beam 1 is leveled, the electric self-locking device 7 locks the corresponding lifting rope 5 again.

Referring to fig. 1 and 2, a mounting seat 8 is further bolted on the cross beam 1, a motor 9 electrically connected to the control system is bolted on the mounting seat 8, and an output shaft of the motor 9 passes through the mounting seat 8 and is coaxially connected to the top end of the mounting column 3 through a flange.

After the lifting of the lifting appliance is completed, the output shaft of the motor 9 drives the four wire reels 4 to rotate through friction force, so that the unreeled lifting rope 5 is rolled up and is convenient to transport.

Referring to fig. 2 and 3, since the leveling of the cross beam 1 is not only needed to operate only one lifting rope 5, a plurality of lifting ropes 5 are often required to be wound and unwound. In the prior art, the reeling and unreeling of a plurality of lifting ropes 5 are mostly operated step by step, so that the situation that individual lifting ropes 5 are not stressed and other lifting ropes 5 are stressed often occurs in the leveling process.

In consideration of the actual situation of the present application, the precast concrete box girder has a large weight per se, and in addition, the sling has a large weight per se, so that if a manner of operating a plurality of lifting ropes 5 step by step in the prior art is adopted, a situation that some lifting ropes 5 are broken due to an excessive force may occur, and thus, the possibility of an accident is high.

Referring to fig. 2 and 3, a horizontally arranged fixing column 10 is further arranged on the cross beam 1, a first leveling component corresponding to each lifting rope 5 is arranged on the fixing column 10, and each first leveling component comprises a plurality of rotating discs 11 which are coaxial and are rotatably sleeved on the fixing column 10.

The diameter of the first leveling component corresponding to the plurality of rotary tables 11 in the same group gradually increases along the axial direction of the fixed column 10, a plurality of hanging rings 12 are welded on the outer side wall of each rotary table 11 in the circumferential direction, a hook 13 is tied at the other end of the lifting rope 5 opposite to the lifting crane, and the hook 13 is used for being hung on the hanging ring 12 corresponding to the first leveling component.

Referring to fig. 2 and 3, a worker calculates the length of each lifting rope 5 to be unwound according to the inclination direction and the angle of the cross beam 1, so as to hang the hook 13 on the hanging ring 12 of the turntable 11 with a proper diameter, and keep the rope body of the lifting rope 5 between the hook 13 and the electric self-locking device 7 in a tensioned state.

Then, the electric self-locking device 7 releases the locking of the lifting ropes 5, the acting force of the box girder enables the corresponding lifting ropes 5 to be simultaneously unreeled, the lifting ropes 5 pull the corresponding rotary discs 11 through the hooks 13 to rotate on the fixed columns 10 until all the lifting ropes 5 wound on the rotary discs 11 are pulled out, and then the electric self-locking device 7 restores the locking of the lifting ropes 5.

The cross beam 1 is leveled by hanging different diameters of the rotary discs 11 through the lifting ropes 5. In the leveling process of the beam 1, each lifting rope 5 is continuously stressed, so that the stress of the lifting rope 5 is relatively stable, the possibility of breakage of the lifting rope is reduced, and the lifting safety of the lifting appliance is improved.

Referring to fig. 2 and 3, considering that the arrangement height and the path of each lifting rope 5 are not exactly the same, a certain error exists in the leveling result, so that the inclination amplitude of the cross beam 1 can only be reduced by one-time leveling, and the cross beam 1 cannot be leveled in place at one time.

Referring to fig. 2 and 3, four second leveling assemblies are further disposed between the support column 6 and the fixed column 10, one second leveling assembly for each lifting rope 5. The second leveling component comprises at least one transition rod 14 which is vertically inserted and matched on the cross beam 1, and the lifting rope 5 sequentially winds each corresponding transition rod 14.

Because the lifting rope 5 is wound on each corresponding transition rod 14 by a certain length, a worker only needs to pull out one transition rod 14 at a time, and the lifting rope 5 released from the transition rod 14 has a length which enables the worker to hang the hook 13 again. Through foretell setting, can realize leveling many times to crossbeam 1, ensure to adjust crossbeam 1 to the level, be favorable to improving the leveling effect to crossbeam 1.

Referring to fig. 2 and 3, the second leveling assembly only requires removal of one transition pole 14 at a time, as the worker does multiple leveling operations. In the leveling process, a large friction is generated between the unwinding of the lifting rope 5 and the rest of the transition rod 14, and both the lifting rope 5 and the transition rod 14 may be damaged greatly in the past.

Therefore, the bottom end of the transition rod 14 penetrates into the cross beam 1 in a rotating mode, when the lifting rope 5 is unreeled, the lifting rope 5 can drive the transition rod 14 to rotate, so that the smoothness of unreeling of the lifting rope 5 is improved, and the possibility of damage to the lifting rope 5 and the transition rod 14 can be reduced.

Referring to fig. 2 and 3, balance seats 15 are bolted between the supporting columns 6 and the fixed columns 10, the top end of each transition rod 14 slides through the balance seats 15, and the balance seats 15 exert certain constraint on the top ends of the transition rods 14, so that the possibility of damage caused by bending deformation of the transition rods 14 under the tension force is reduced.

Referring to fig. 2 and 3, in the process of leveling by a worker for multiple times, the inclination amplitude of the cross beam 1 gradually decreases, and the leveling error also gradually decreases. If the length of the lifting rope 5 released by the transition lever 14 is long, the leveling error is easily increased.

For this purpose, the diameter of at least one transition bar 14 of the second levelling assembly of the same group is gradually reduced in the direction from the fixing post 10 to the supporting post 6. In this case, the hoisting rope 5 is wound on each transition bar 14 with the same number of turns.

When leveling for many times, workers also pull out the transition rod 14 in sequence along the sequence from the fixed column 10 to the supporting column 6, and the length of the lifting rope 5 released on the corresponding transition rod 14 during leveling for many times is shorter and shorter, so that the error of the leveling result for many times is smaller and smaller along with the leveling for many times, and the leveling effect of the cross beam 1 is favorably improved.

The implementation principle of the embodiment 1 is as follows: a worker detects whether the cross beam 1 inclines or not through the detection equipment, calculates the length of each lifting rope 5 needing to be unreeled according to the inclination direction and the angle of the cross beam 1, and accordingly hangs the hook 13 on the hanging ring 12 of the rotary table 11 with the proper diameter, and enables the rope body of the lifting rope 5 located between the hook 13 and the electric self-locking device 7 to be kept in a tensioning state. Then, the locking state of the lifting ropes 5 is released through the control system, the plurality of lifting ropes 5 are simultaneously unreeled under the action of the cross beam 1, the rotary table 11, the transition rod 14 and the mounting column 3 rotate relatively until the lifting ropes 5 wound on the rotary table 11 are completely pulled out, and finally the lifting ropes 5 are locked again through the electric self-locking device 7.

When the cross beam 1 still keeps inclining after the first leveling, a worker sequentially pulls out the transition rod 14 of each second leveling component along the direction from the fixed column 10 to the supporting column 6, the worker hangs the hook 13 on the hanging ring 12 of the rotating disc 11 with the proper diameter again, and the operation mode is repeated to level the cross beam 1 for multiple times until the box beam keeps horizontal.

Example 2

Referring to fig. 4, the present embodiment is different from embodiment 1 in that the number of turns of the hoist rope 5 on at least one transition bar 14 of the same set of second leveling assemblies is gradually decreased in the direction from the fixing post 10 to the supporting post 6.

By the mode, the effect that the length of the corresponding lifting rope 5 released on the transition rod 14 is shorter and shorter when the leveling is carried out for multiple times can be achieved, and the error of the multiple leveling result is gradually reduced, so that the leveling effect on the cross beam 1 is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a precast concrete case roof beam hoist with leveling function, includes crossbeam (1), four apex angle departments on crossbeam (1) are equipped with rings (2) respectively, its characterized in that: it is provided with erection column (3) to rotate on crossbeam (1), it is equipped with four wire reels (4), every to rotate the cover on erection column (3) all around rolling up on wire reel (4) lifting rope (5), still be equipped with support column (6) on crossbeam (1), support column (6) are gone up vertical four electricity that are provided with and are connected in control system's electronic auto-lock ware (7), one lifting rope (5) correspond one lifting rope (2) and one electronic auto-lock ware (7), the one end of lifting rope (5) is passed and is corresponded lifting rope (2), the other end passes and corresponds electronic auto-lock ware (7).

2. The concrete precast box girder spreader with leveling function according to claim 1, wherein: the beam (1) is further provided with a mounting seat (8), the mounting seat (8) is provided with a motor (9) electrically connected to a control system, and an output shaft of the motor (9) penetrates through the mounting seat (8) and is coaxially connected to the end part of the mounting column (3).

3. The concrete precast box girder spreader with leveling function according to claim 1, wherein: still be provided with fixed column (10) on crossbeam (1), be provided with on fixed column (10) with every the first leveling subassembly of lifting rope (5) one-to-one, first leveling subassembly includes that the coaxial and rotation cover of a plurality of is established carousel (11) on fixed column (10), with the group first leveling subassembly corresponds a plurality of the diameter of carousel (11) along the axis direction grow gradually of fixed column (10), every equal circumference is provided with a plurality of link (12) on the lateral wall of carousel (11), be equipped with on lifting rope (5) and be used for the articulate and correspond first leveling subassembly couple (13) on link (12).

4. The concrete precast box girder lifting appliance with leveling function according to claim 3, wherein: the support column (6) with still be equipped with four second leveling subassemblies between fixed column (10), one lifting rope (5) correspond one the second leveling subassembly, the second leveling subassembly is in including pegging graft cooperation at least one transition pole (14) on crossbeam (1), lifting rope (5) are in proper order around establishing every that corresponds transition pole (14).

5. The concrete precast box girder spreader with leveling function according to claim 4, wherein: the diameter of at least one transition rod (14) of the second leveling assembly in the same group is gradually reduced along the direction from the fixed column (10) to the supporting column (6).

6. The concrete precast box girder spreader with leveling function according to claim 4, wherein: the transition rod (14) is in running fit with the cross beam (1).

7. The concrete precast box girder spreader with leveling function according to claim 4, wherein: a balance seat (15) is arranged between the supporting column (6) and the fixing column (10), and the top end of each transition rod (14) penetrates through the balance seat (15) in a sliding mode.

8. The concrete precast box girder spreader with leveling function according to claim 4, wherein: the number of turns of the lifting rope (5) on at least one transition rod (14) of the second leveling assembly in the same group is gradually reduced along the direction from the fixed column (10) to the supporting column (6).

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