CN216549363U - Integral hoisting device for prefabricated box girder steel bars - Google Patents
Integral hoisting device for prefabricated box girder steel bars Download PDFInfo
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- CN216549363U CN216549363U CN202122528735.XU CN202122528735U CN216549363U CN 216549363 U CN216549363 U CN 216549363U CN 202122528735 U CN202122528735 U CN 202122528735U CN 216549363 U CN216549363 U CN 216549363U
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- sides
- box girder
- rods
- lower extreme
- hoisting device
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 41
- 239000010959 steel Substances 0.000 title claims abstract description 41
- 239000002965 rope Substances 0.000 claims abstract description 17
- 238000004804 winding Methods 0.000 claims abstract description 9
- 230000003014 reinforcing Effects 0.000 claims description 8
- 238000005728 strengthening Methods 0.000 claims description 2
- 230000002457 bidirectional Effects 0.000 abstract description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 210000000614 Ribs Anatomy 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model discloses a prefabricated box girder reinforcing steel bar integral hoisting device which comprises two portal frames, wherein bearing rods are arranged on two sides between the upper ends of the two portal frames, at least two main asynchronous motors are arranged at the upper ends of the two bearing rods, at least two winding rollers are arranged at the rotating shaft end of each main asynchronous motor, a steel wire rope is arranged on each winding roller, a load rod is fixedly connected between the lower ends of the steel wire ropes on the two sides, auxiliary asynchronous motors are arranged on two sides of the lower ends of the two load rods, two bidirectional screw rods are arranged at the rotating shaft ends of the two auxiliary asynchronous motors, at least two screw sleeves are sleeved at two ends of the two bidirectional screw rods, a control block is arranged at the lower end of each screw sleeve, and a lifting hook is arranged at the lower end of the control block. The bidirectional screw rod is controlled to rotate through the auxiliary asynchronous motor, the lifting hook is driven to move left and right through screw sleeve control, the lifting position can be adjusted according to lifting hook points of different box girders, and the steel bar box girders with different sizes can be conveniently lifted.
Description
Technical Field
The utility model belongs to the technical field of hoisting of box girder steel bars, and particularly relates to an integral hoisting device for prefabricated box girder steel bars.
Background
Prefabricated box girder is the key position of bridge superstructure construction among the bridge engineering, and the ligature of framework of steel reinforcement then is the key process of prefabricated box girder construction, and the tradition mode is to carry out the ligature of end web reinforcing bar on the system roof beam pedestal, and the installation of external mold and centre form is being carried out after the ligature is accomplished, the availability factor of greatly reduced system roof beam pedestal and template, extension construction cycle, can only wholly tie up the reinforcing bar outside the field during the construction of another kind of mode, then wholly hang into the template with framework of steel reinforcement.
At the current prefabricated box girder reinforcing bar integral hoisting device in construction site, in order to make more convenient hoist and mount in hoist and mount, install the lifting hook on the bull stick, it is rotatory to drive the bull stick through the motor, and reaches control and rotates the lifting hook, makes the lifting hook need not manual operation at the process of catching on the box girder reinforcing bar of prefabricated completion, reduces constructor excessive operation, has the weak point: when whole ligature framework of steel reinforcement hoist and mount, whole framework of steel reinforcement is from great, because of the lifting hook rigidity, can't carry out the lifting hook according to the position of box girder framework of steel reinforcement hoist and mount and remove, makes the too few framework of steel reinforcement of hoisting point lead to its deformation seriously because of the stress point is uneven, can't satisfy the quality requirement, has the problem that can't adjust the hoist and mount according to the lifting hook point of different box girders.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an integral hoisting device for a prefabricated box girder steel bar, which solves the problem that hoisting cannot be adjusted according to the hoisting hook points of different box girders in the prior art.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a prefabricated case roof beam reinforcing bar integral hoisting device, includes two portal frames both sides all are provided with the bearing bar, two between the portal frame upper end the bearing bar upper end all is provided with two at least main asynchronous machine, every main asynchronous machine rotates the axle head and all is provided with two at least take-up rolls, every all be provided with wire rope, both sides on the take-up roll equal fixedly connected with load bar, two between the wire rope lower extreme load bar lower extreme both sides all are provided with vice asynchronous machine, two vice asynchronous machine rotates the axle head and all is provided with two-way lead screw, two-way lead screw both ends are all overlapped and are equipped with two at least silk covers, every the silk cover lower extreme all is provided with the control block, the control block lower extreme is provided with the lifting hook.
Preferably, two portal frames lower extreme both sides all are provided with the fixed block, portal frame one side is provided with the switch block, two terminal surface is provided with the strengthening rib under the bearing bar both ends between a lateral wall of portal frame upper end.
Preferably, two both sides of the upper end face of the load rod are provided with connecting rings, the lower end of the steel wire rope is inserted into the connecting rings, at least four connecting rods are arranged on both sides of the load rod, limiting rods are arranged on the lower ends of the connecting rods, two auxiliary asynchronous motors are arranged on both sides of the upper end face of the limiting rods, a T-shaped limiting groove is formed in each of the two opposite faces between the limiting rods, control rods are arranged on both sides of the control block, both ends of each control rod are inserted into the T-shaped limiting grooves, rollers are arranged at both ends of each control rod, and the rollers are located in the T-shaped limiting grooves.
Preferably, at least seven fixed rods are arranged between the two limit rods, a positioning rod is arranged between the load rod and the fixed rods, limit grooves are formed in two sides of the lower end of the positioning rod, and one end of each of the two-way lead screws is inserted into the limit grooves in two sides.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model firstly drives the load rod to move downwards through the steel wire rope by a main asynchronous motor when hoisting the steel bar box girder, and simultaneously drives the lifting hook to move downwards to the upper end of the steel bar box girder, thereby facilitating the hoisting of the box girder, because the hoisting point of the steel bar box girder is not fixed at the same position, the bidirectional screw rod is controlled to rotate through an auxiliary asynchronous motor, the screw sleeve is driven to move leftwards and rightwards, the screw sleeve drives the lifting hook to move simultaneously through a control block in the moving process, the roller rolls in a T-shaped limit groove, the precision of adjusting the direction of the lifting hook is increased, the lifting hook is controlled to be consistent with the hoisting point of the box girder, the lifting hook is convenient to penetrate in the hoisting point for fixing, the winding roller is controlled to rotate by the main asynchronous motor after fixing, the steel bar box girder is driven to move upwards through the steel wire rope, the aim of hoisting the whole steel bar box girder is achieved, the lifting hook is controlled to move through the auxiliary asynchronous motor, the lifting position can be adjusted according to the lifting hook points of different box girders, and the steel bar box girders with different sizes can be conveniently lifted for use.
2. In the hoisting process, because the weight of the steel bar box girder is larger, the gravity of the lifting hook acts on the roller through the control block and acts on the load-bearing rod through the roller and the limiting rod, and the phenomenon that the bidirectional screw rod bends due to load-bearing stress, so that the direction of the lifting hook cannot be adjusted normally is prevented.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cutaway schematic view of FIG. 1;
FIG. 3 is a schematic sectional view taken from the left side of A-A of FIG. 1;
FIG. 4 is an enlarged view of a portion a of FIG. 2;
fig. 5 is an enlarged schematic view of fig. 3 at b.
In the figure: 1. a gantry; 2. a load-bearing bar; 3. a primary asynchronous motor; 4. a winding roll; 5. a wire rope; 6. a load bar; 7. a secondary asynchronous motor; 8. a bidirectional lead screw; 9. sleeving the silk; 10. a control block; 11. a hook; 12. a fixed block; 13. a switch group; 14. reinforcing ribs; 15. a connecting ring; 16. a connecting rod; 17. a limiting rod; 18. a T-shaped limiting groove; 19. a control lever; 20. a roller; 21. fixing the rod; 22. positioning a rod; 23. a limiting groove.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1, 2, 3, 4 and 5, an embodiment of the utility model provides an integral hoisting device for a prefabricated box girder steel bar, which comprises two portal frames 1, bearing rods 2 welded on two sides between the upper ends of the two portal frames 1, two main asynchronous motors 3 welded on the upper ends of the two bearing rods 2, the main asynchronous motors 3 being of the type YX3-100L1-4, control ends of the main asynchronous motors 3 being connected to the output end of a switch group 13 through wires, two winding rollers 4 welded on the rotating shaft ends of each main asynchronous motor 3, steel wire ropes 5 wound on each winding roller 4, the diameter of each steel wire rope 5 being 2cm, a load bar 6 fixedly connected between the lower ends of the two load bars 5, auxiliary asynchronous motors 7 welded on two sides of the lower ends of the two load bars 6, the type of the auxiliary asynchronous motors 7 being of the type YX3-100L1-4, the control ends of the auxiliary asynchronous motors 7 being connected to the output end of the switch group 13 through wires, two-way screw rods 8 are welded at the rotating shaft ends of two auxiliary asynchronous motors 7, two screw sleeves 9 are sleeved at two ends of each two-way screw rod 8, a control block 10 is welded at the lower end of each screw sleeve 9, a lifting hook 11 is welded at the lower end of each control block 10, fixed blocks 12 are welded at two sides of the lower end of each portal frame 1, a switch group 13 is fixedly installed on the right side of the lower end of each portal frame 1 through bolts, the input end of the switch group 13 is connected with an external power supply through wires, reinforcing ribs 14 are welded between the inner wall of the upper end of each portal frame 1 at the lower end of each bearing rod 2, connecting rings 15 are welded at two sides of the upper end of each two load-carrying rods 6, the lower ends of the steel wire ropes 5 are inserted into the connecting rings 15, the lower ends of the steel wire ropes 5 are installed at the upper ends of the connecting rings 15 through bolt fixing buckles, four connecting rods 16 are welded at two sides of each load-carrying rod 6, limiting rods 17 are welded at the lower ends of the connecting rods 16, two auxiliary asynchronous motors 7 are welded at two sides of the upper end of each limiting rod 17, t-shaped limiting grooves 18 are machined in opposite surfaces between the two limiting rods 17, control rods 19 are welded on two surfaces of the control block 10, two ends of each control rod 19 are inserted into the T-shaped limiting grooves 18, idler wheels 20 are welded at two ends of each control rod 19, the idler wheels 20 are located in the T-shaped limiting grooves 18, seven fixing rods 21 are welded between the two limiting rods 17, a positioning rod 22 is welded between the load rod 6 and the fixing rods 21, limiting grooves 23 are machined in two sides of the lower end of the positioning rod 22, and the inner ends of the two bidirectional screw rods 8 are inserted into the limiting grooves 23 in two sides respectively.
The working principle of the embodiment is as follows: firstly, when a steel bar box girder is hoisted, a load rod 6 is driven to move downwards by a main asynchronous motor 3 through a steel wire rope 5, a lifting hook 11 is driven to move downwards to the upper end of the steel bar box girder, the box girder is convenient to hoist, because the hoisting point of the steel bar box girder is not fixed at the same position, a bidirectional screw 8 is controlled to rotate by an auxiliary asynchronous motor 7, a wire sleeve 9 is driven to move leftwards and rightwards, the wire sleeve 9 drives the lifting hook 11 to move simultaneously by a control block 10 in the moving process, the roller 20 rolls in a T-shaped limit groove 18, the precision of adjusting the direction of the lifting hook 11 is increased, the lifting hook 11 is controlled to be consistent with the hoisting point of the box girder, the lifting hook 11 is convenient to penetrate into the hoisting point to be fixed, after the fixing, a winding roller 4 is controlled to rotate by the main asynchronous motor 3, the steel bar box girder is driven to move upwards by the steel wire rope 5, the whole purpose of hoisting the steel bar box girder is achieved, the lifting hook 11 is controlled to move by the auxiliary asynchronous motor 7, the lifting position can be adjusted according to the lifting hook points of different box girders, and the steel bar box girders with different sizes can be conveniently lifted for use. In the hoisting process, because of the large weight of the steel bar box girder, the lifting hook 11 applies gravity to the roller 20 through the control block 10, and applies gravity to the load bar 6 through the roller 20 and the limiting rod 17, so that the bidirectional screw 8 is prevented from bending due to bearing stress, and the lifting hook 11 cannot be normally adjusted in position.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (4)
1. The utility model provides a prefabricated box girder reinforcing bar integral hoisting device which characterized in that: including two portal frames (1) two both sides all are provided with bearing bar (2), two between portal frame (1) upper end bearing bar (2) upper end all is provided with two at least main asynchronous motor (3), every main asynchronous motor (3) rotate the axle head and all are provided with two at least winding rollers (4), every all be provided with wire rope (5) on winding roller (4), both sides equal fixedly connected with load pole (6), two between wire rope (5) lower extreme load pole (6) lower extreme both sides all are provided with vice asynchronous motor (7), two vice asynchronous motor (7) rotate the axle head and all are provided with two-way lead screw (8), two-way lead screw (8) both ends all overlap and are equipped with two at least silk braid (9), every silk braid (9) lower extreme all is provided with control block (10), control block (10) lower extreme is provided with lifting hook (11).
2. The integral hoisting device for the steel bars of the prefabricated box girder of claim 1 is characterized in that: two portal frame (1) lower extreme both sides all are provided with fixed block (12), portal frame (1) one side is provided with switch block (13), two under bearing bar (2) both ends terminal surface in be provided with between a portal frame (1) upper end lateral wall strengthening rib (14).
3. The integral hoisting device for the steel bars of the prefabricated box girder of claim 1 is characterized in that: two load pole (6) up end both sides all are provided with go-between (15), wire rope (5) lower extreme alternates in go-between (15), load pole (6) both sides all are provided with four at least connecting rods (16), both sides connecting rod (16) lower extreme all is provided with gag lever post (17), two vice asynchronous machine (7) all sets up gag lever post (17) up end both sides, two the opposite face all is equipped with T shape spacing groove (18) between gag lever post (17), control block (10) both sides all are provided with control lever (19), control lever (19) both ends are all inserted and are established in T shape spacing groove (18), and control lever (19) both ends all are provided with gyro wheel (20), gyro wheel (20) are located in T shape spacing groove (18).
4. The integral hoisting device for the steel bars of the precast box girder is characterized in that: at least seven fixing rods (21) are arranged between the two limiting rods (17), a positioning rod (22) is arranged between the load rod (6) and the fixing rods (21), limiting grooves (23) are formed in two sides of the lower end of the positioning rod (22), and one end of each of the two-way lead screws (8) is inserted into the limiting grooves (23) in two sides respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122528735.XU CN216549363U (en) | 2021-10-20 | 2021-10-20 | Integral hoisting device for prefabricated box girder steel bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122528735.XU CN216549363U (en) | 2021-10-20 | 2021-10-20 | Integral hoisting device for prefabricated box girder steel bars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216549363U true CN216549363U (en) | 2022-05-17 |
Family
ID=81568167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122528735.XU Active CN216549363U (en) | 2021-10-20 | 2021-10-20 | Integral hoisting device for prefabricated box girder steel bars |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216549363U (en) |
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2021
- 2021-10-20 CN CN202122528735.XU patent/CN216549363U/en active Active
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