CN114955829A - Steel box girder buttress under limited space, steel box girder and hoisting method - Google Patents
Steel box girder buttress under limited space, steel box girder and hoisting method Download PDFInfo
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- CN114955829A CN114955829A CN202210552287.3A CN202210552287A CN114955829A CN 114955829 A CN114955829 A CN 114955829A CN 202210552287 A CN202210552287 A CN 202210552287A CN 114955829 A CN114955829 A CN 114955829A
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- steel box
- box girder
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- roof
- sliding
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 85
- 239000010959 steel Substances 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 description 9
- 230000005611 electricity Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/14—Slings with hooks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a steel box girder buttress, a steel box girder and a hoisting method under a limited space, wherein the steel box girder buttress comprises a top plate positioned at the top of the steel box girder and a hoisting device arranged on the top plate, a lifting hook is hung and buckled on the hoisting device, the hoisting device comprises an arc-shaped hoisting ring, two ends of the arc-shaped hoisting ring penetrate through the top plate, the arc-shaped hoisting ring is arranged on the top plate in a sliding manner along the length direction of the arc-shaped hoisting ring, a driving mechanism for driving the arc-shaped hoisting ring to slide, a locking mechanism for blocking the arc-shaped hoisting ring to slide and a control mechanism capable of unlocking the locking mechanism when the steel box girder is hoisted in place are arranged on the top plate, and the lifting hook is hung and buckled on the arc-shaped hoisting ring. This application has when the hoist and mount space ratio is limited, the effect that the lifting hook breaks away from hoist device of being convenient for.
Description
Technical Field
The invention relates to the technical field of steel box girder hoisting, in particular to a steel box girder buttress, a steel box girder and a hoisting method in a limited space.
Background
With the continuous development of the basic construction in China, road and bridge engineering is also continuously constructed, and in a large-span supporting bridge, the span of a steel box girder can reach hundreds of meters or even thousands of meters sometimes, so the steel box girder is generally divided into a plurality of girder sections for manufacturing and mounting, and the steel box girder is widely used in the existing bridge engineering. In the process of hoisting the steel box girder, a crane is generally used to hoist the steel box girder, and in order to reduce the possibility that the lifting hook is accidentally separated from a hoisted object, the lifting hook with a closable opening is generally used.
Chinese utility model patent of No. CN208815417U in the correlation technique, it discloses bridge steel box roof beam hoist device, including the steel box roof beam, fixedly connected with link on the top surface of steel box roof beam is equipped with the locating plate in steel box roof beam length direction's both sides, is equipped with the lug on the locating plate, has all seted up the connecting hole on the top surface of locating plate and steel box roof beam, the front end and two connecting hole threaded connection of lug, the bottom of steel box roof beam is equipped with the setting element of vertical direction, is equipped with the positioning chuck at the lower extreme of locating plate.
To above-mentioned correlation technique, because the lifting hook is hung and is detained on hoist device, the opening of lifting hook can be sealed, when the hoist and mount space ratio is more limited, the staff is difficult to climb the top surface of steel box girder and breaks away from the lifting hook from hoist device, has increased the degree of difficulty of hoist and mount work.
Disclosure of Invention
In order to be convenient for a lifting hook to be separated from a lifting device when the lifting space is limited, the application provides a steel box girder buttress, a steel box girder and a lifting method under the limited space.
In a first aspect, the application provides a steel box girder buttress and steel box girder adopt following technical scheme under finite space:
the utility model provides a steel box girder buttress and steel box girder under finite space, is including being located the roof at steel box girder top with set up the hoist device on the roof, it has the lifting hook to hang to detain on the hoist device, hoist device includes arc rings, the both ends of arc rings are all passed the roof, arc rings along its length direction slip set up in on the roof, be provided with on the roof and be used for the drive the gliding actuating mechanism of arc rings, be used for hindering the gliding locking mechanical system of arc rings and work as can with under the state that steel box girder hoist and mount target in place locking mechanical system removes the control mechanism of locking, the lifting hook hang detain in on the arc rings.
Through adopting above-mentioned technical scheme, locking mechanical system hinders arc rings to slide along arc rings length direction on the roof, when steel box girder hoist and mount target in place, control mechanism removes the locking state of arc rings to under actuating mechanism's drive, arc rings slide along arc rings length direction on the roof, make the one end of arc rings break away from the roof, and produce the clearance between the one end of messenger arc rings and the top surface of roof, thereby make the hoist and mount space relatively have the time limit, the lifting hook of being convenient for breaks away from hoist device.
Preferably, a clamping groove is formed in the side face of the arc-shaped hanging ring, the locking mechanism comprises a fixed seat fixed on the top plate, a first sliding groove is formed in the fixed seat, and a sliding pin with one end capable of being inserted into the clamping groove is arranged in the first sliding groove in a sliding mode.
Through adopting above-mentioned technical scheme, fixing base fixed connection is on the roof, and the sliding pin slides and sets up in first sliding tray, and when the steel box girder was in the time of not installing and hoist and mount in-process, the one end of sliding pin was inserted and is located in the draw-in groove on the arc rings to block the arc rings to slide at the hoist and mount in-process of steel box girder, reduced the unexpected condition of opening of hoist device at the hoist and mount in-process arc rings of steel box girder and taken place, improved the security of steel box girder hoist and mount work.
Preferably, a limiting groove is formed in the side wall of the first sliding groove, a limiting block is fixedly connected to the sliding pin, and the limiting block is arranged in the limiting groove in a sliding mode.
Through adopting above-mentioned technical scheme, the spacing groove slides and sets up in the spacing inslot, hinders the sliding pin and breaks away from first sliding tray, has improved the steadiness of locking mechanical system structure.
Preferably, a first spring is arranged in the limiting groove, one end of the first spring abuts against the side wall, away from the arc-shaped hanging ring, of the limiting groove, and one end of the first spring abuts against the side face, away from the arc-shaped hanging ring, of the limiting block.
Through adopting above-mentioned technical scheme, under the thrust effect of first spring, hinder the sliding pin and slide to first sliding tray to the one end that makes the sliding pin can be more stable insert locate the draw-in groove in.
Preferably, control mechanism include fixed connection in attract the piece on the sliding pin, first sliding tray is kept away from fixedly connected with is used for attracting on the lateral wall of arc rings the electro-magnet of attracting the piece, still be provided with on the roof the lifting hook can with after falling the switch module that the electric circuit of electro-magnet switched on.
Through adopting above-mentioned technical scheme, after the hoist and mount of steel case roof beam target in place, the lifting rope of crane drives the couple whereabouts to make the switch module switch on the electric circuit of electro-magnet, make the electro-magnet can attract to attract the piece and slide to first sliding tray together with the sliding pin, thereby make the one end of sliding pin can break away from the draw-in groove, and then make the lifting hook fall behind locking mechanical system's locking state automatic relieving, the lifting hook of being convenient for breaks away from hoist device.
Preferably, the switch module includes fixed connection in fixed block on the roof top surface, the fixed block is located under the arc rings, the second sliding tray has been seted up on the top surface of fixed block, it is provided with the control block to slide in the second sliding tray, be provided with the hindrance in the second sliding tray the second spring that the control block slided downwards, it is equipped with the fixed contact piece to inlay on the inner wall of second sliding tray, inlay on the side of control block be equipped with can with the inconsistent movable contact piece of fixed contact piece, be fixed with the power on the roof, movable contact piece with one of them electrode electricity of power is connected, another electrode of power with one of them one end electricity of coil is connected in the electro-magnet, the other end of coil in the electro-magnet with fixed contact piece electricity is connected.
By adopting the technical scheme, the movable contact block is separated from the fixed contact block under the elastic force action of the second spring, after the steel box girder is hoisted in place, the lifting rope of the crane drives the hook to fall, and when the lifting hook falls and presses the movable control block to overcome the elastic force of the second spring and slide towards the second slide, the movable contact block is abutted against the fixed contact block, so that a section loop of the electromagnet is conducted, and the locking state of the locking mechanism is automatically released after the lifting hook falls.
Preferably, the driving mechanism comprises a baffle fixed at the end part of the arc-shaped hanging ring, the baffle is located below the top plate, a third spring is arranged between the baffle and the top plate, one end of the third spring abuts against the bottom surface of the top plate, and the other end of the third spring abuts against the baffle.
Through adopting above-mentioned technical scheme, when locking mechanical system removed the lock, under the elastic force effect of third spring, the third spring can drive arc rings and slide on the roof, makes to produce the clearance between the one end of arc rings and the top surface of roof, and the lifting hook of being convenient for breaks away from hoist device.
Preferably, the arc-shaped lifting ring is sleeved with a reinforcing pipe, the arc-shaped lifting ring is arranged in the reinforcing pipe in a sliding mode, the reinforcing pipe is fixedly connected to the top plate, and the reinforcing pipe is located at one end, far away from the locking mechanism, of the arc-shaped lifting ring.
Through adopting above-mentioned technical scheme, on the reinforced pipe was fixed in the roof, the arc rings slided and set up in the reinforced pipe, had promoted hoist device's intensity.
In a second aspect, the application provides a hoisting method for a steel box girder buttress and a steel box girder under a limited space, which adopts the following technical scheme:
a steel box girder buttress and a steel box girder hoisting method under a limited space comprise the following steps: s1: a worker buckles the lifting hook on the arc-shaped lifting ring; s2: after the steel box girder is hoisted in place, workers enable the lifting hook to fall down through a lifting rope; s3: and the lifting hook is separated from the lifting device from a gap between one end of the arc-shaped lifting ring and the top surface of the top plate by a worker.
Through adopting above-mentioned technical scheme, after the hoist and mount of steel box girder put in place, arc rings slide along arc rings length direction on the roof, make to produce the clearance between the one end of arc rings and the top surface of roof to when the hoist and mount space ratio of steel box girder is more limited, the lifting hook of being convenient for breaks away from hoist device.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the locking mechanism blocks the arc-shaped hanging ring from sliding on the top plate along the length direction of the arc-shaped hanging ring, when the steel box girder is hoisted in place, the control mechanism releases the locking state of the arc-shaped hanging ring, and the arc-shaped hanging ring slides on the top plate along the length direction of the arc-shaped hanging ring under the driving of the driving mechanism, so that one end of the arc-shaped hanging ring is separated from the top plate, and a gap is generated between one end of the arc-shaped hanging ring and the top surface of the top plate, so that the lifting hook is convenient to separate from the hoisting device when the hoisting space is limited;
2. the fixed seat is fixedly connected to the top plate, the sliding pin is arranged in the first sliding groove in a sliding mode, and when the steel box girder is not installed and is hoisted, one end of the sliding pin is inserted into the clamping groove in the arc-shaped hoisting ring, so that the arc-shaped hoisting ring is prevented from sliding in the hoisting process of the steel box girder, the accidental opening of the arc-shaped hoisting ring in the hoisting process of the steel box girder of the hoisting device is reduced, and the safety of the hoisting work of the steel box girder is improved;
3. under the action of the elastic force of the second spring, the movable contact block is separated from the fixed contact block, when the steel box girder is hoisted in place, the lifting rope of the crane drives the hook to fall, and when the lifting hook presses the movable control block to overcome the elastic force of the second spring and slide towards the second slide, the movable contact block is abutted against the fixed contact block, so that a section loop of the electromagnet is conducted, and the locking state of the locking mechanism is automatically released after the lifting hook falls.
Drawings
Fig. 1 is a schematic overall structure diagram of a steel box girder in the embodiment of the present application.
Fig. 2 is a cross-sectional view of a top plate and a lifting device in an embodiment of the present application.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a partially enlarged view at B in fig. 2.
Description of reference numerals:
1. hoisting the device; 11. an arc-shaped hanging ring; 111. a card slot; 12. a reinforcement tube; 13. a locking mechanism; 131. a fixed seat; 1311. a first sliding groove; 1312. a limiting groove; 132. a slide pin; 133. a limiting block; 134. a first spring; 14. a control mechanism; 141. an electromagnet; 142. an attraction block; 143. a power source; 144. a switch assembly; 145. a fixed block; 1451. a second sliding groove; 146. a control block; 147. a second spring; 148. a fixed contact block; 149. a movable contact block; 15. a drive mechanism; 151. a baffle plate; 152. a third spring; 2. a top plate; 100. a steel box girder; 101. and (4) a lifting hook.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses steel box girder buttress and steel box girder under finite space. Referring to fig. 1 and 2, the steel box girder 100 includes a hoisting device 1 and a top plate 2, the top plate 2 is horizontally disposed on the top of the steel box girder 100, four groups of hoisting devices 1 are disposed on the top plate 2, and the four groups of hoisting devices 1 are respectively disposed at four corners of the top plate 2.
Referring to fig. 2 and 3, the hoisting device 1 includes an arc-shaped hoisting ring 11, a reinforcing pipe 12, a locking mechanism 13, a control mechanism 14, and a driving mechanism 15. Arc rings 11 are the major arc form, and roof 2 is all passed at arc rings 11's both ends, and arc rings 11 set up on roof 2 along its length direction slip. The arc-shaped hanging ring 11 is hung and buckled with a hanging hook 101.
Referring to fig. 2 and 3, the locking mechanism 13 includes a holder 131, a slide pin 132, a stopper 133, and a first spring 134. Fixing base 131 is located the below of roof 2, and fixing base 131 welded fastening is on roof 2, and fixing base 131 is located the one side that arc rings 11 is close to roof 2 edge. The side of the fixed seat 131 close to the arc-shaped hanging ring 11 is provided with a first sliding groove 1311, the sliding pin 132 is slidably disposed in the first sliding groove 1311, the sliding pin 132 is provided with an inclined surface, the inclined surface is located at one end of the sliding pin 132 close to the arc-shaped hanging ring 11, and the inclined surface is located at the upper portion of the sliding pin 132.
Referring to fig. 2 and 3, a limit groove 1312 is formed in a top wall of the first sliding groove 1311, a length direction of the limit groove 1312 is parallel to a sliding direction of the sliding pin 132, the limit block 133 is welded and fixed to a top surface of the sliding pin 132, and the limit block 133 is slidably disposed in the limit groove 1312. A first spring 134 is arranged in the limit groove 1312, one end of the first spring 134 abuts against the side wall of the limit groove 1312 far away from the arc-shaped hanging ring 11, and one end of the first spring 134 abuts against the side face of the limit block 133 far away from the arc-shaped hanging ring 11. The side of the arc-shaped hanging ring 11 is provided with a clamping groove 111, and one end of the arc-shaped hanging ring is slidably inserted into the clamping groove 111 under the elastic force of the first spring 134.
Referring to fig. 2, the reinforcing tube 12 is sleeved outside the arc-shaped hanging ring 11, the arc-shaped hanging ring 11 is in clearance fit with an inner hole of the reinforcing tube 12, the reinforcing tube 12 is welded and fixed on the top surface of the top plate 2, and the reinforcing tube 12 is located at one end of the arc-shaped hanging ring 11, which is far away from the locking mechanism 13.
Referring to fig. 2 and 3, the control mechanism 14 includes an electromagnet 141, an attraction block 142, a power source 143, and a switch assembly 144. The attraction block 142 is fixedly connected to the end face of the sliding pin 132 away from the arc-shaped hanging ring 11, the electromagnet 141 is fixedly connected to the side wall of the first sliding groove 1311 away from the arc-shaped hanging ring 11, the electromagnet 141 and the attraction block 142 are flush with each other, and the power source 143 is fixedly connected to the bottom face of the top plate 2.
Referring to fig. 2 and 4, the switch assembly 144 includes a fixed block 145, a control block 146, a second spring 147, a fixed contact block 148, and a movable contact block 149. The fixed block 145 is welded and fixed on the top surface of the top plate 2, and the fixed block 145 is positioned under the arc-shaped hanging ring 11. A second sliding groove 1451 is formed on the top surface of the fixed block 145, the control block 146 is slidably disposed in the second sliding groove 1451, the second spring 147 is disposed in the second sliding groove 1451, one end of the second spring 147 is fixedly connected to the bottom wall of the second sliding groove 1451, and the other end of the second spring 147 is fixedly connected to the bottom surface of the control block 146.
Referring to fig. 2, 3 and 4, the fixed contact block 148 is fitted on the inner wall of the second sliding groove 1451, the movable contact block 149 is fitted on the side surface of the control block 146, and the movable contact block 149 is positioned above the fixed contact block 148 by the elastic force of the second spring 147. The movable contact block 149 is electrically connected to one of the electrodes of the power source 143, the other electrode of the power source 143 is electrically connected to one of the ends of the coil of the electromagnet 141, and the other end of the coil of the electromagnet 141 is electrically connected to the fixed contact block 148. When the hook 101 falls down, the hook 101 presses the control block 146 to slide the control block 146 into the second sliding groove 1451, so that the movable contact block 149 abuts against the fixed contact block 148.
Referring to fig. 2, the driving mechanism 15 includes a shutter 151 and a third spring 152. The baffle 151 is a circular plate, the baffle 151 is fixed to the end of the arc-shaped hanging ring 11 in a welding manner, the baffle 151 is located at one end, away from the locking mechanism 13, of the arc-shaped hanging ring 11, the baffle 151 is located below the top plate 2, the third spring 152 is located between the baffle 151 and the top plate 2, one end of the third spring 152 abuts against the bottom surface of the top plate 2, and the other end of the third spring 152 abuts against the baffle 151.
The implementation principle of steel box girder buttress and steel box girder under finite space of this application embodiment does: when the steel box girder 100 is hoisted in place, the hook is driven by the hoisting rope of the crane to fall, when the hoisting hook 101 falls and presses the movable control block 146 to overcome the elastic force of the second spring 147 and slide towards the second slide, the movable contact block 149 abuts against the fixed contact block 148, the electric loop of the electromagnet 141 is conducted, the electromagnet 141 attracts the attraction block 142 and slides towards the first slide groove 1311 together with the slide pin 132, so that one end of the slide pin 132 can be separated from the clamping groove 111, and the locking state of the locking mechanism 13 is automatically released after the hoisting hook 101 falls.
When the locking mechanism 13 is unlocked, under the action of the elastic force of the third spring 152, the arc-shaped hanging ring 11 slides on the top plate 2 along the length direction of the arc-shaped hanging ring 11, so that one end of the arc-shaped hanging ring 11 is separated from the top plate 2, and a gap is formed between one end of the arc-shaped hanging ring 11 and the top surface of the top plate 2, so that the lifting hook 101 is conveniently separated from the lifting device 1 when the lifting space is limited.
The embodiment of the application also discloses a hoisting method of the steel box girder buttress and the steel box girder in the limited space, which comprises the following steps:
s1: a worker hangs and buckles the hook 101 on the arc-shaped hanging ring 11; s2: after the steel box girder 100 is hoisted in place, a worker drops the lifting hook 101 through a lifting rope; s3: the worker separates the hook 101 from the lifting device 1 from a gap between one end of the arc-shaped hanging ring 11 and the top surface of the top plate 2.
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 (9)
1. The utility model provides a steel box girder buttress and steel box girder under finite space, is including being located roof (2) at steel box girder (100) top and hoisting device (1) that set up on roof (2), it has lifting hook (101), its characterized in that to hang the knot on hoisting device (1): hoisting device (1) includes arc rings (11), the both ends of arc rings (11) are all passed roof (2), arc rings (11) along its length direction slide set up in on roof (2), be provided with on roof (2) and be used for the drive arc rings (11) gliding actuating mechanism (15), be used for hindering arc rings (11) gliding locking mechanical system (13) and work as can with under the state that steel box girder (100) hoist and mount target in place locking mechanism (13) remove control mechanism (14) of locking, lifting hook (101) hang and detain in on arc rings (11).
2. The steel box girder buttress and steel box girder under limited space of claim 1, characterized in that: draw-in groove (111) have been seted up to the side of arc rings (11), locking mechanical system (13) are including being fixed in fixing base (131) on roof (2), first sliding tray (1311) have been seted up on fixing base (131), it has one end to insert to be located to slide in first sliding tray (1311) sliding pin (132) in draw-in groove (111).
3. The steel box girder buttress and steel box girder under limited space of claim 2, characterized in that: a limiting groove (1312) is formed in the side wall of the first sliding groove (1311), a limiting block (133) is fixedly connected to the sliding pin (132), and the limiting block (133) is arranged in the limiting groove (1312) in a sliding mode.
4. The steel box girder buttress and steel box girder under limited space of claim 3, characterized in that: a first spring (134) is arranged in the limiting groove (1312), one end of the first spring (134) abuts against the side wall, away from the arc-shaped hanging ring (11), of the limiting groove (1312), and one end of the first spring (134) abuts against the side face, away from the arc-shaped hanging ring (11), of the limiting block (133).
5. The steel box girder buttress and steel box girder under limited space of claim 4, characterized in that: control mechanism (14) including fixed connection in attract piece (142) on sliding pin (132), first sliding tray (1311) are kept away from fixedly connected with is used for attracting on the lateral wall of arc rings (11) electromagnet (141) of attracting piece (142), still be provided with on roof (2) lifting hook (101) fall after can with switch module (144) that the electric circuit of electromagnet (141) switched on.
6. The steel box girder buttress and steel box girder under limited space of claim 5, characterized in that: the switch assembly (144) comprises a fixed block (145) fixedly connected to the top surface of the top plate (2), the fixed block (145) is located under the arc-shaped hanging ring (11), a second sliding groove (1451) is formed in the top surface of the fixed block (145), a control block (146) is arranged in the second sliding groove (1451) in a sliding manner, a second spring (147) for preventing the control block (146) from sliding downwards is arranged in the second sliding groove (1451), a fixed contact block (148) is embedded in the inner wall of the second sliding groove (1451), a movable contact block (149) capable of being in contact with the fixed contact block (148) is embedded in the side surface of the control block (146), a power source (143) is fixed on the top plate (2), the movable contact block (149) is electrically connected with one electrode of the power source (143), and the other electrode of the power source (143) is electrically connected with one end of a coil in the electromagnet (141), the other end of the coil in the electromagnet (141) is electrically connected with the fixed contact block (148).
7. The steel box girder buttress and steel box girder under limited space of claim 1, characterized in that: actuating mechanism (15) is including being fixed in baffle (151) of the tip of arc rings (11), baffle (151) are located the below of roof (2), baffle (151) with be provided with third spring (152) between roof (2), the one end of third spring (152) contradict in on the bottom surface of roof (2), the other end of third spring (152) contradict in on baffle (151).
8. The steel box girder buttress and steel box girder under limited space of claim 1, characterized in that: arc rings (11) overcoat is equipped with reinforced pipe (12), arc rings (11) slide set up in reinforced pipe (12) are interior, reinforced pipe (12) fixed connection in on roof (2), reinforced pipe (12) are located arc rings (11) are kept away from the one end of locking mechanical system (13).
9. The hoisting method of the steel box girder buttress and the steel box girder under the limited space according to claim 6, which is characterized by comprising the following steps of:
s1: the worker buckles the lifting hook (101) on the arc-shaped lifting ring (11);
s2: when the steel box girder (100) is hoisted in place, workers enable the lifting hook (101) to fall through a lifting rope;
s3: the worker separates the lifting hook (101) from the lifting device (1) between a gap generated between one end of the arc-shaped lifting ring (11) and the top surface of the top plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210552287.3A CN114955829A (en) | 2022-05-20 | 2022-05-20 | Steel box girder buttress under limited space, steel box girder and hoisting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210552287.3A CN114955829A (en) | 2022-05-20 | 2022-05-20 | Steel box girder buttress under limited space, steel box girder and hoisting method |
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| Publication Number | Publication Date |
|---|---|
| CN114955829A true CN114955829A (en) | 2022-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210552287.3A Pending CN114955829A (en) | 2022-05-20 | 2022-05-20 | Steel box girder buttress under limited space, steel box girder and hoisting method |
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| CN (1) | CN114955829A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118255244A (en) * | 2024-05-30 | 2024-06-28 | 中铁四局集团有限公司 | Hoisting equipment for assembling prefabricated highway small box girder |
-
2022
- 2022-05-20 CN CN202210552287.3A patent/CN114955829A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118255244A (en) * | 2024-05-30 | 2024-06-28 | 中铁四局集团有限公司 | Hoisting equipment for assembling prefabricated highway small box girder |
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