CN117105072A - A kind of steel box girder hoisting equipment - Google Patents
A kind of steel box girder hoisting equipment Download PDFInfo
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- CN117105072A CN117105072A CN202311392583.2A CN202311392583A CN117105072A CN 117105072 A CN117105072 A CN 117105072A CN 202311392583 A CN202311392583 A CN 202311392583A CN 117105072 A CN117105072 A CN 117105072A
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- Prior art keywords
- lifting
- groups
- steel box
- box girder
- disc
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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
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
本发明属于钢箱梁吊装设备领域，具体的说是一种钢箱梁吊装设备，包括主支撑架，主支撑架后端旋接收卷盘一，主支撑架前端旋接绕轮，收卷盘一上缠绕缆绳，缆绳下端设置吊具，吊具包括：吊架，吊架上端面固定连接缆绳，转动安装在吊架下端面的收卷盘二，缠绕在收卷盘二上的主吊绳，固定连接主吊绳端部的两组从吊绳，滑动连接从吊绳的导向套，以及，固定在从吊绳端部的挂钩，挂钩用于扣合钢箱梁上的吊耳，由于吊耳与挂钩预先被紧紧扣合在一起，因此收卷盘一可直接收卷缆绳，使钢箱梁被吊具直接吊起，无需工作人员前去引导、观察、确认，不仅降低了钢箱梁吊装难度，同时避免工作人员安全事故的发生。
The invention belongs to the field of steel box girder hoisting equipment. Specifically, it is a steel box girder hoisting equipment, which includes a main support frame. The rear end of the main support frame is rotated to receive a reel. The front end of the main support frame is rotated to a winding wheel. The upper end of the cable is wound with a cable, and a spreader is set at the lower end of the cable. The spreader includes: a hanger, the upper end of the hanger is fixedly connected to the cable, the second winding drum is rotated and installed on the lower end of the hanger, and the main hanging rope is wound around the second winding drum. , two sets of slave slings are fixedly connected to the ends of the main slings, slidingly connected to the guide sleeves of the slave slings, and hooks fixed to the ends of the slave slings. The hooks are used to fasten the lifting lugs on the steel box beams. The lifting lugs and hooks are tightly fastened together in advance, so the rewinding reel can directly rewind the cable, so that the steel box girder can be directly lifted by the spreader without the need for staff to guide, observe, and confirm, which not only reduces the steel It is difficult to hoist box beams while avoiding safety accidents for workers.
Description
Technical Field
The invention belongs to the field of steel box girder hoisting equipment, and particularly relates to steel box girder hoisting equipment.
Background
The steel box girder is also called a steel plate box girder, and is a common structural form of a large-span bridge. The steel box girder is generally used on bridges with larger spans, and is called as a steel box girder because the appearance is like a box; the steel box girder is generally formed by connecting a top plate, a bottom plate, a web plate, a diaphragm plate, a longitudinal diaphragm plate, stiffening ribs and the like in an all-welded mode, wherein the top plate is an orthotropic bridge deck formed by a cover plate and the longitudinal stiffening ribs.
The patent of publication number CN218931463U discloses a steel box girder hoisting device comprising: the lifting appliance is provided with a fixing frame at the bottom; the bottom of the moving block is fixedly connected with a lifting rope, and one end of the lifting rope, which is far away from the moving block, is fixedly connected with a lifting hook; the hydraulic rod is arranged at the bottom of the fixing frame, the motor is arranged on the right side of the fixing frame, and the output end of the motor is fixedly connected with the shaft lever; the outer surface of the shaft lever is of a bidirectional thread structure, the shaft lever and the moving block are connected in a threaded mode, and a steel box girder body is hung at the bottom of the lifting hook. The steel box girder hoisting equipment is difficult to shake in the hoisting process, prevents the hoisting position of the steel box girder from shifting, is convenient for hoisting the steel box girders with different sizes, and has strong flexibility.
According to the technical scheme, before the steel box girder is hoisted, workers are required to manually buckle the lifting hooks on the lifting lugs on the steel box girder, in order to enable the lifting hooks to buckle on the lifting lugs, the descending position of the fixing frame is relatively close to the steel box girder, the distance is generally smaller than the length of a lifting rope, the lifting hooks are enabled to buckle on the lifting lugs relatively loose, the workers are required to command the lifting workers to slowly lift the fixing frame through an interphone, after the lifting rope is determined to be straightened, the four groups of lifting hooks are buckled on the four groups of lifting lugs one by one, the workers can be further instructed to continuously lift the steel box girder upwards, firstly, in the lifting process, in order to clearly observe the conditions of the lifting hooks and the lifting lugs, the workers are relatively close to the steel box girder, so that the risk of safety accidents of the workers is definitely increased, secondly, the workers are required to guide the lifting workers in real time through the interphone, the lifting difficulty is increased, and the lifting efficiency is reduced; therefore, the invention provides steel box girder hoisting equipment.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to steel box girder hoisting equipment, which comprises a main support frame, wherein the rear end of the main support frame is screwed with a first receiving reel, the front end of the main support frame is screwed with a winding wheel, a cable is wound on the first receiving reel, the lower end of the cable is provided with a lifting appliance, and the lifting appliance comprises: the lifting device comprises a lifting frame, a cable fixedly connected with the upper end surface of the lifting frame, a second winding disc rotatably arranged on the lower end surface of the lifting frame, a main lifting rope wound on the second winding disc, two groups of auxiliary lifting ropes fixedly connected with the end parts of the main lifting ropes, a guide sleeve slidingly connected with the auxiliary lifting ropes, and a hook fixed on the end parts of the auxiliary lifting ropes, wherein the hook is used for buckling lifting lugs on a steel box girder;
the second rolling disk is driven to rotate, the second rolling disk is driven to roll the main lifting rope, the end part of the main lifting rope pulls two groups of auxiliary lifting ropes to move along the two groups of guide sleeves respectively, the auxiliary lifting ropes drive the hooks, as the hooks are buckled on the lifting lugs and cannot move, the second rolling disk continuously rotates, the four groups of auxiliary lifting ropes are tightened, meanwhile, the hooks are tightly buckled on the lifting lugs under the pulling force of the auxiliary lifting ropes, the hooks cannot be separated from the lifting lugs, and the lifting lugs and the hooks are tightly buckled together in advance, so that the first rolling disk can directly roll a cable, a steel box girder is directly hoisted by the lifting tool, the front guiding, observing and confirming of workers are not only reduced in lifting difficulty of the steel box girder, but also safety accidents of the workers are avoided.
Preferably, the spreader further comprises: the mechanism is twisted soon, and the mechanism is twisted soon is used for driving the reel two, twists the mechanism and includes: the bearing shaft is rotationally connected to the lower end surface of the hanging bracket, the lower end of the bearing shaft is fixedly connected with the second receiving reel, a worm wheel fixedly arranged at the upper end of the bearing shaft is meshed with a worm of the worm wheel, and the worm is rotationally connected to the hanging bracket;
the worm wheel rotates together with the bearing shaft, and the bearing shaft drives the second rolling disc to rotate, so that the four groups of slave lifting ropes are tightened, a certain self-locking function is achieved between the worm wheel and the worm wheel, and the second rolling disc is prevented from loosening and rotating after the four groups of slave lifting ropes are tightened.
Preferably, the guide sleeve includes: the sleeve body is fixedly connected with the lower end surface of the hanging bracket, four groups of rectangular grooves are formed in the sleeve body at equal angles, and a plurality of groups of rolling shafts are connected with the rectangular grooves in a rotary mode at equal intervals, the secondary hanging rope penetrates through the sleeve body, and the rolling shafts are connected with the secondary hanging rope in a rotary mode;
the auxiliary lifting rope passes through the plurality of groups of rollers, the auxiliary lifting rope drives the plurality of groups of rollers to rotate, friction between the auxiliary lifting rope and the sleeve body is reduced by the rotating rollers, and the plurality of groups of rollers play a guiding role on the movement of the auxiliary lifting rope.
Preferably, the spreader further comprises: two guiding mechanism of group, two guiding mechanism symmetric distribution in the both sides of rolling dish two, guiding mechanism are used for guiding main lifting rope removal, and guiding mechanism includes: the fixed plate is fixedly connected with the lower end face of the hanging bracket, two groups of guide posts are screwed on the fixed plate, the main hanging rope is positioned between the two groups of guide posts, and the guide posts are rotationally connected with the main hanging rope;
the main lifting rope that removes will constantly pass between two sets of guide posts, and main lifting rope drives the guide post simultaneously and rotates, and pivoted guide post has reduced the frictional force between self and the main lifting rope, and the guide post removes main lifting rope simultaneously and plays the guide effect, makes main lifting rope can better twine on rolling dish two.
Preferably, the hook comprises: the hook, hook lock lug, offer the rectangle jack at the hook afterbody, the rectangle axle of activity grafting rectangle jack, rectangle axle one end fixed connection is followed the lifting rope, the connecting rod of articulated rectangle axle, the dead lever of articulated connecting rod to and, fix the round pin axle on the dead lever, the round pin axle articulates on the hook, the couple includes: two groups of protruding shafts are arranged at two ends of the connecting rod, one group of protruding shafts is connected with the other end of the rectangular shaft in a rotating mode, and the other group of protruding shafts is connected with the sealing rod in a rotating mode;
the rectangular shaft slides along the rectangular jack, meanwhile, the rectangular shaft drives the connecting rod, the connecting rod drives the sealing rod to rotate by taking the pin shaft as an axis until the end part of the sealing rod is attached to the hook, so that the head of the hook is closed, the lifting lug is completely limited on the hook, and the greater the closing force of the head of the hook is along with continuous tensioning of the rectangular shaft from the lifting rope, the unhooking of the hook and the lifting lug in the tightening process of the lifting rope is avoided.
Preferably, the spreader further comprises: the locking mechanism is used for locking the second winding disc, and the locking mechanism includes: the first fluted disc, first fluted disc upper end fixed connection receives reel two, sets up the second fluted disc in first fluted disc below, sets up three spring of setting in the second fluted disc below, is located the bearing plate of three spring below to and fix four guide pillar of group in the bearing plate four corners, the hoist still includes: the first fluted disc is provided with a plurality of first groups of teeth at equal angles, the second fluted disc is provided with a plurality of second groups of teeth at equal angles, the first groups of teeth and the second groups of teeth are meshed with each other, the second fluted disc and the hanging frame are provided with four groups of through holes, the guide posts are connected with the through holes in a sliding manner, and the springs are positioned between the bearing plate and the second fluted disc;
therefore, after the steel box girder is lifted, the second rolling disc cannot easily rotate due to the biting force between the second fluted disc and the first fluted disc, so that the second rolling disc is further prevented from loosening and rotating.
The beneficial effects of the invention are as follows:
1. the rolling disc II is driven to rotate, the rolling disc II is driven to roll the main lifting rope, the end part of the main lifting rope pulls two groups of auxiliary lifting ropes to move along the two groups of guide sleeves respectively, the hanging ropes drive the hooks, as the hooks are buckled on the lifting lugs and cannot move, the four groups of auxiliary lifting ropes are continuously rotated along with the rolling disc II, meanwhile, the hooks are tightly buckled on the lifting lugs under the pulling force of the auxiliary lifting ropes, the hooks cannot be separated from the lifting lugs, the rolling disc I is driven to rotate again through the motor, the mooring rope starts to wind on the rolling disc I, meanwhile, the mooring rope drives the lifting lugs to move upwards, the lifting lugs move upwards together with the auxiliary lifting ropes and the hooks, the steel box girder is lifted through the lifting lugs, and the lifting lugs and the hooks can be buckled together tightly in advance, so that the rolling disc I can directly roll the mooring rope, the steel box girder is directly lifted by the lifting lugs without leading, observing and confirming workers, the lifting difficulty of the steel box girder is reduced, and meanwhile, the safety accidents of workers are avoided.
2. In the moving process of the main lifting rope of the second winding disc, the moving main lifting rope continuously passes through the space between the two groups of guide posts, meanwhile, the main lifting rope drives the guide posts to rotate, friction force between the main lifting rope and the main lifting rope is reduced by the rotating guide posts, and meanwhile, the guide posts play a guiding role in moving the main lifting rope, so that the main lifting rope can be wound on the second winding disc better.
3. In the moving process of the slave lifting rope along the guide sleeve, the slave lifting rope passes through the plurality of groups of rollers, meanwhile, the slave lifting rope drives the plurality of groups of rollers to rotate, friction between the slave lifting rope and the sleeve body is reduced by the rotating rollers, and meanwhile, the plurality of groups of rollers play a guiding role on the movement of the slave lifting rope.
4. Four sets of follow lifting ropes are tightened up the in-process, will stimulate rectangular shaft from the lifting ropes, make rectangular shaft slide along rectangular jack, and rectangular shaft drives the connecting rod simultaneously, and the connecting rod drives the dead lever and uses the round pin axle to rotate as the axis, until dead lever tip and the laminating of hook, make the hook head closed to with the lug spacing on the hook completely, along with follow lifting ropes constantly take up rectangular shaft, the greater is closed force from the hook head, avoids tightening up the in-process from the lifting ropes, hook and lug unhook.
5. When the second rolling disc rotates to tighten the four groups of slave lifting ropes, the second rolling disc rotates to drive the first fluted disc, the first rotating fluted disc enables the first plurality of groups of teeth to extrude the second plurality of groups of teeth to slide downwards along the guide post, the second teeth and the teeth are meshed again and again under the action of the spring resilience force, after the slave lifting ropes are straightened, the slave lifting ropes are still kept to be tightened, the lifting lug pulls the slave lifting ropes reversely through the hook, the lifting frame slides downwards along the guide post, the lifting frame pushes the second fluted disc to compress the second fluted disc together with the second rolling disc and the first fluted disc, the spring rebound force acts on the second fluted disc along with the continuous compression of the spring, so that the meshing force between the second fluted disc and the first fluted disc is larger and larger until the first fluted disc cannot rotate, and the second rolling disc cannot rotate easily due to the meshing force between the second fluted disc and the first fluted disc after the steel box girder is lifted, and the second rolling disc is further prevented from loosening and rotating.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a schematic view of the cable, spreader, steel box girder and lifting lug combination of the present invention.
Fig. 3 is a schematic view of a spreader according to the present invention.
Fig. 4 is a schematic diagram of a combination of a cross-sectional hanger, a second winding disc, a main lifting rope and a screwing mechanism.
FIG. 5 is a schematic view showing the combination of the second reel, the main lifting rope, the auxiliary lifting rope, the guide sleeve and the guide mechanism.
Fig. 6 is a schematic view of a guide sleeve according to the present invention.
Fig. 7 is a schematic view of the combination of the lifting rope, the hook and the lifting lug.
Fig. 8 is a schematic diagram of a combination of a hanger, a second winding disc, a receiving shaft and a locking mechanism in a cross section.
In the figure: 1. a main support frame; 2. rolling a first reel; 3. a cable; 4. winding wheel; 5. a lifting appliance; 6. a steel box girder; 7. lifting lugs; 501. a hanging bracket; 502. rolling a second reel; 503. a main lifting rope; 504. from the lifting rope; 505. a guide sleeve; 506. a hook; 507. a screwing mechanism; 508. a guide mechanism; 509. a locking mechanism; 5071. a receiving shaft; 5072. a worm wheel; 5073. a worm; 5051. a sleeve body; 5052. rectangular grooves; 5053. a roller; 5081. a fixing plate; 5082. a guide post; 5061. a hook; 5062. rectangular jacks; 5063. a rectangular shaft; 5064. a connecting rod; 5065. a closing rod; 5066. a pin shaft; 5091. a first toothed disc; 911. tooth one; 5092. a second toothed disc; 921. teeth II; 922. a through hole; 5093. a spring; 5094. a pressure bearing plate; 5095. and (5) a guide post.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Embodiment one: as shown in fig. 1 to 3, the steel box girder hoisting device according to the embodiment of the present invention includes a main support 1, a receiving reel 1 2 rotatably mounted at the rear end of the main support 1, a winding wheel 4 rotatably mounted at the front end of the main support 1, a cable 3 wound on the winding reel 2, and a lifting appliance 5 disposed at the lower end of the cable 3, where the lifting appliance 5 includes: the lifting frame 501 is fixedly connected with the cable 3 on the upper end surface of the lifting frame 501, the second winding disc 502 is rotatably arranged on the lower end surface of the lifting frame 501, the main lifting rope 503 is wound on the second winding disc 502, two groups of auxiliary lifting ropes 504 are fixedly connected with the end parts of the main lifting rope 503, the guide sleeve 505 of the auxiliary lifting ropes 504 is in sliding connection, and the hanging hooks 506 are fixed on the end parts of the auxiliary lifting ropes 504 and used for buckling lifting lugs 7 on the steel box girder 6.
Specifically, when the steel box girder 6 is hoisted, the main support 1 is arranged on the pre-arranged steel box girder 6 on the bridge in advance, the first winding disc 2 is driven by a motor, the cable 3 is wound on the winding wheel 4, the first winding disc 2 is driven by the motor to rotate, the cable 3 is pulled out of the first winding disc 2, meanwhile, the whole lifting appliance 5 moves downwards along with the pulled cable 3 until the lifting appliance 5 is positioned above the steel box girder 6 to be hoisted, the hanging hooks 506 can be buckled on the lifting lugs 7 on the steel box girder 6, after the four groups of hanging hooks 506 are buckled with the four groups of lifting lugs 7 one by one, the second winding disc 502 is driven to rotate, the second winding disc 502 is rotated to wind the main lifting rope 503, the end parts of the main lifting rope 503 are pulled by the two groups of auxiliary lifting ropes 504 to respectively move along the two groups of guide sleeves 505, the hanging hooks 506 are driven by the auxiliary lifting ropes 504, and the hanging hooks 506 cannot move because the hanging hooks 506 are buckled on the lifting lugs 7, with the continuous rotation of the second winding disc 502, the fourth group of slave lifting ropes 504 are tightened, meanwhile, the hooks 506 are tightly buckled on the lifting lugs 7 under the action of the pull force of the slave lifting ropes 504, so that the hooks 506 cannot be separated from the lifting lugs 7, then the first winding disc 2 is driven to rotate again through a motor, the cable 3 starts to wind on the first winding disc 2, meanwhile, the cable 3 drives the lifting frame 501 to move upwards, the lifting frame 501 moves upwards together with the slave lifting ropes 504 and the hooks 506, the steel box girder 6 is lifted through the lifting lugs 7, and the lifting lugs 7 and the hooks 506 are tightly buckled together in advance, so that the first winding disc 2 can directly wind the cable 3, the steel box girder 6 is directly lifted by the lifting tool 5, no workers need to go forward to guide, observe and confirm, the lifting difficulty of the steel box girder 6 is reduced, and meanwhile, the safety accidents of workers are avoided.
As shown in fig. 2 to 4, the spreader 5 further includes: the screwing mechanism 507, the screwing mechanism 507 is used for driving the second reel 502, and the screwing mechanism 507 comprises: the receiving shaft 5071, the receiving shaft 5071 is screwed on the lower end surface of the hanger 501, the receiving reel two 502 is fixedly connected to the lower end of the receiving shaft 5071, the worm gear 5072 is fixedly installed on the upper end of the receiving shaft 5071, the worm 5073 is meshed with the worm gear 5072, and the worm 5073 is screwed on the hanger 501.
Specifically, in the process of driving the second winding disc 502 to wind up the main lifting rope 503, firstly, the worm 5073 is driven to rotate, the worm 5073 rotates to enable the worm gear 5072 to rotate together with the bearing shaft 5071, and the bearing shaft 5071 drives the second winding disc 502 to rotate, so that the four groups of slave lifting ropes 504 are tightened, and secondly, a certain self-locking function is provided between the worm 5073 and the worm gear 5072, so that the second winding disc 502 is prevented from loosening and rotating after the four groups of slave lifting ropes 504 are tightened.
As shown in fig. 5 and 6, the guide sleeve 505 includes: the sleeve body 5051 is fixedly connected to the lower end surface of the hanger 501, four sets of rectangular slots 5052 equiangularly disposed within the sleeve body 5051, and sets of rollers 5053 equally spaced rotatably attached to the rectangular slots 5052 extend through the sleeve body 5051 from the hanger line 504, the rollers 5053 rotatably connected to the secondary hanger line 504.
Specifically, during the process of moving the slave suspension rope 504 along the guide sleeve 505, the slave suspension rope 504 passes through the plurality of sets of rollers 5053, and meanwhile, the slave suspension rope 504 drives the plurality of sets of rollers 5053 to rotate, the rotating rollers 5053 reduce friction between the slave suspension rope 504 and the sleeve body 5051, and meanwhile, the plurality of sets of rollers 5053 play a guiding role on the movement of the slave suspension rope 504.
As shown in fig. 5, the spreader 5 further includes: the two sets of guiding mechanisms 508, the two sets of guiding mechanisms 508 are symmetrically distributed on two sides of the second reel 502, the guiding mechanisms 508 are used for guiding the movement of the main lifting rope 503, and the guiding mechanisms 508 comprise: the fixing plate 5081, the fixing plate 5081 is fixedly connected with the lower end face of the hanger 501, two sets of guide posts 5082 screwed on the fixing plate 5081, and the main hanging rope 503 is located between the two sets of guide posts 5082, and the guide posts 5082 are rotatably connected with the main hanging rope 503.
Specifically, in the moving process of the second winding disc 502 for winding the main lifting rope 503, the moving main lifting rope 503 continuously passes through between the two groups of guide posts 5082, meanwhile, the main lifting rope 503 drives the guide posts 5082 to rotate, the rotating guide posts 5082 reduce friction between the main lifting rope 503 and the main lifting rope 503, and meanwhile, the guide posts 5082 play a guiding role on the movement of the main lifting rope 503, so that the main lifting rope 503 can be wound on the second winding disc 502 better.
As shown in fig. 7, the hook 506 includes: the hook 5061, the hook 5061 lock lug 7, set up the rectangle jack 5062 at the hook 5061 afterbody, the rectangle axle 5063 of movable grafting rectangle jack 5062, rectangle axle 5063 one end fixed connection is followed lifting rope 504, the connecting rod 5064 of articulated rectangle axle 5063, the dead lever 5065 of articulated connecting rod 5064, and the round pin axle 5066 of fixing on dead lever 5065, round pin axle 5066 connects on hook 5061 soon, couple 506 includes: two groups of protruding shafts are arranged at two ends of the connecting rod 5064, one group of protruding shafts is connected with the other end of the rectangular shaft 5063 in a rotating mode, and the other group of protruding shafts is connected with the sealing rod 5065 in a rotating mode.
Specifically, in the tightening process of the four sets of slave lifting ropes 504, the slave lifting ropes 504 will pull the rectangular shafts 5063 to enable the rectangular shafts 5063 to slide along the rectangular insertion holes 5062, meanwhile, the rectangular shafts 5063 drive the connecting rods 5064, the connecting rods 5064 drive the sealing rods 5065 to rotate by taking the pin shafts 5066 as axes until the end portions of the sealing rods 5065 are attached to the hooks 5061, the heads of the hooks 5061 are closed, and accordingly lifting lugs 7 are completely limited on the hooks 5061, and as the rectangular shafts 5063 are continuously pulled from the lifting ropes 504, the closing force of the heads of the hooks 506 is larger, so that unhooking of the hooks 5061 from the lifting lugs 7 in the tightening process of the slave lifting ropes 504 is avoided.
Embodiment two: as shown in fig. 8, in comparative example one, another embodiment of the present invention is: the spreader 5 further comprises: locking mechanism 509, locking mechanism 509 is used for locking rolling disc two 502, and locking mechanism 509 includes: the first fluted disc 5091, first fluted disc 5091 upper end fixed connection take-up reel two 502, set up the second fluted disc 5092 of first fluted disc 5091 below, set up the three spring 5093 of second fluted disc 5092 below, be located the bearing plate 5094 of three spring 5093 below to and fix four guide pillar 5095 in bearing plate 5094 four corners, hoist 5 still includes: the first fluted disc 5091 is provided with a plurality of first teeth 911 at equal angles, the second fluted disc 5092 is provided with a plurality of second teeth 921 at equal angles, the plurality of first teeth 911 and the plurality of second teeth 921 are meshed with each other, the second fluted disc 5092 and the hanger 501 are provided with four groups of through holes 922, the guide pillar 5095 is connected with the through holes 922 in a sliding mode, and the spring 5093 is located between the bearing plate 5094 and the second fluted disc 5092.
Specifically, when the steel box girder 6 is hoisted, during the process that the whole lifting appliance 5 is lowered along with the pulled cable 3, when the pressure bearing plate 5094 is attached to the upper end surface of the steel box girder 6, under the action of the spring force of the three groups of springs 5093, the whole lifting appliance 5 is placed on the steel box girder 6, when the rolling disc two 502 is rotated to tighten the four groups of slave lifting ropes 504, the rolling disc two 502 drives the first fluted disc 5091 to rotate, the first fluted disc 5091 rotates, the first toothed disc 5091 rotates to enable the plurality of groups of teeth 911 to extrude the plurality of groups of teeth two 921, the second fluted disc 5092 slides downwards along the guide posts 5095, and the springs 5093 are compressed, under the reverse elasticity of the springs 5093, the teeth two 921 are still kept to be tightened on the slave lifting ropes 504, the lifting lug 7 reversely pulls the slave lifting ropes 504 through the hook 5061, the lifting appliance 501 slides downwards along the guide posts 5095, and the first fluted disc 5091 pushes the second fluted disc 5091 to rotate together with the rolling disc two 502, the first fluted disc 5091 enables the plurality of groups of teeth two toothed discs 911 to slide downwards, the second fluted disc 5092 slides downwards along with the guide posts 5095, and the second fluted disc 5093 cannot be further compressed by the first fluted disc 5093, and the second fluted disc 5092 cannot be further compressed with the second fluted disc 5093, and the second fluted disc 5093 is easily and cannot be further compressed, and cannot be easily and easily rotated, due to the second and the second fluted disc is not compressed.
Working principle: the first winding disc 2 is driven by a motor to rotate, so that the cable 3 is pulled out of the first winding disc 2, the whole lifting appliance 5 moves downwards along with the pulled cable 3 until the lifting appliance 5 is positioned above a steel box girder 6 to be lifted, the hooks 506 can be buckled to lifting lugs 7 on the steel box girder 6, after four groups of hooks 506 are buckled with four groups of lifting lugs 7 one by one, firstly, a worm 5073 is driven to rotate, the worm 5073 is rotated to enable a worm wheel 5072 to rotate together with a bearing shaft 5071, the bearing shaft 5071 drives a second winding disc 502 to rotate, the second winding disc 502 is rotated to wind up the main lifting rope 503, the end part of the main lifting rope 503 pulls the two groups of slave lifting ropes 504 to move along two groups of guide sleeves 505 respectively, the slave lifting ropes 504 drive the hooks 506, as the hooks 506 are buckled on the lifting lugs 7, the second winding disc 502 is continuously rotated, the four groups of slave lifting ropes 504 are tightened, and the hooks 506 are simultaneously under the pulling force of the slave lifting ropes 504, the hook 506 is tightly buckled on the lifting lug 7, the rectangular shaft 5063 is pulled by the lifting rope 504, the rectangular shaft 5063 slides along the rectangular jack 5062, the rectangular shaft 5063 drives the connecting rod 5064, the connecting rod 5064 drives the sealing rod 5065 to rotate by taking the pin shaft 5066 as an axis until the end part of the sealing rod 5065 is jointed with the hook 5061, the head of the hook 5061 is closed, the lifting rope 504 is kept to be tightened, the lifting lug 7 reversely pulls the lifting rope 504 by the hook 5061, the lifting lug 501 slides downwards along the guide post 5095, the lifting lug 501 is pressed down together with the second reel 502 and the first fluted disc 5091, the first fluted disc 5091 pushes the second fluted disc 5092 to compress the spring 5093, the rebound force of the spring 5093 acts on the second fluted disc 5092, the snap force between the second fluted disc 5092 and the first fluted disc 5091 is bigger and bigger until the first fluted disc 5091 cannot rotate, the first fluted disc 5091 is driven to rotate again by a motor, the cable 3 starts to wind on the winding disc one 2, and simultaneously the cable 3 drives the hanging bracket 501 to move upwards, the hanging bracket 501 moves upwards together with the hanging rope 504 and the hanging hook 506, and the hanging hook 506 lifts the steel box girder 6 through the hanging lug 7.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a steel case roof beam lifting device, includes main support (1), main support (1) rear end revolves and receives reel one (2), and main support (1) front end revolves and connects reel (4), winding hawser (3) on reel one (2), its characterized in that: a lifting appliance (5) is arranged at the lower end of the mooring rope (3);
the spreader (5) comprises:
the hanging bracket (501), the upper end surface of the hanging bracket (501) is fixedly connected with the cable (3);
a second winding disc (502) rotatably arranged on the lower end surface of the hanging bracket (501);
a main lifting rope (503) wound on the second winding disc (502);
two groups of slave lifting ropes (504) fixedly connected with the end parts of the master lifting ropes (503);
a guide sleeve (505) which is connected with the slave lifting rope (504) in a sliding way;
the method comprises the steps of,
and the hook (506) is fixed at the end part of the slave lifting rope (504), and the hook (506) is used for buckling a lifting lug (7) on the steel box girder (6).
2. A steel box girder lifting device according to claim 1, characterized in that: the spreader (5) further comprises:
the screwing mechanism (507) is used for driving the second winding disc (502);
the screwing mechanism (507) includes:
the bearing shaft (5071), the bearing shaft (5071) is screwed on the lower end surface of the hanging bracket (501), and the lower end of the bearing shaft (5071) is fixedly connected with the second winding disc (502);
a worm wheel (5072) fixedly mounted on the upper end of the receiving shaft (5071);
a worm (5073) engaging the worm wheel (5072);
the worm (5073) is screwed on the hanging bracket (501).
3. A steel box girder hoisting device according to claim 2, characterized in that: the guide sleeve (505) comprises:
the sleeve body (5051) is fixedly connected with the lower end face of the hanging bracket (501);
four groups of rectangular grooves (5052) which are arranged in the sleeve body (5051) at equal angles;
the method comprises the steps of,
a plurality of groups of rollers (5053) which are screwed on the rectangular groove (5052) at equal intervals;
the secondary lifting rope (504) penetrates through the sleeve body (5051), and the roller (5053) is rotatably connected with the secondary lifting rope (504).
4. A steel box girder lifting device according to claim 3, characterized in that: the spreader (5) further comprises:
the two groups of guide mechanisms (508) are symmetrically distributed on two sides of the second winding disc (502), and the guide mechanisms (508) are used for guiding the movement of the main lifting rope (503);
the guide mechanism (508) includes:
a fixing plate (5081), wherein the fixing plate (5081) is fixedly connected with the lower end surface of the hanging bracket (501);
two groups of guide posts (5082) screwed on the fixed plate (5081);
the method comprises the steps of,
the main lifting rope (503) is positioned between two groups of guide posts (5082), and the guide posts (5082) are rotatably connected with the main lifting rope (503).
5. The steel box girder hoisting device of claim 4, wherein: the hook (506) comprises:
a hook (5061), wherein the hook (5061) is buckled with the lifting lug (7);
rectangular jacks (5062) arranged at the tail parts of the hooks (5061);
a rectangular shaft (5063) movably inserted into the rectangular jack (5062), wherein one end of the rectangular shaft (5063) is fixedly connected with the slave lifting rope (504);
a link (5064) hinged to the rectangular shaft (5063);
-a closing lever (5065) articulated to said connecting lever (5064);
the method comprises the steps of,
-a pin (5066) fixed to the closing rod (5065), the pin (5066) being screwed to the hooking means (5061).
6. The steel box girder hoisting device according to claim 5, wherein: the hook (506) comprises: two groups of protruding shafts are arranged at two ends of the connecting rod (5064), one group of protruding shafts is connected with the other end of the rectangular shaft (5063) in a rotating mode, and the other group of protruding shafts is connected with the sealing rod (5065) in a rotating mode.
7. The steel box girder hoisting device of claim 6, wherein: the spreader (5) further comprises:
the locking mechanism (509) is used for locking the second winding disc (502);
the locking mechanism (509) comprises:
the upper end of the first fluted disc (5091) is fixedly connected with the second winding disc (502);
a second toothed disc (5092) disposed below the first toothed disc (5091);
three sets of springs (5093) disposed below the second toothed disc (5092);
a pressure bearing plate (5094) positioned below the three groups of springs (5093);
the method comprises the steps of,
four groups of guide posts (5095) are fixed at four corners of the bearing plate (5094).
8. The steel box girder hoisting device of claim 7, wherein: the spreader (5) further comprises: a plurality of first groups of teeth (911) are equiangularly arranged on the first fluted disc (5091), a plurality of second groups of teeth (921) are equiangularly arranged on the second fluted disc (5092), and the first groups of teeth (911) and the second groups of teeth (921) are meshed with each other.
9. The steel box girder hoisting device of claim 8, wherein: four groups of through holes (922) are formed in the second fluted disc (5092) and the hanging frame (501), and the guide posts (5095) are connected with the through holes (922) in a sliding mode.
10. The steel box girder hoisting device of claim 9, wherein: the spring (5093) is located between the bearing plate (5094) and the second toothed disc (5092).
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| CN202311392583.2A CN117105072B (en) | 2023-10-25 | 2023-10-25 | A kind of steel box girder hoisting equipment |
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| CN202311392583.2A CN117105072B (en) | 2023-10-25 | 2023-10-25 | A kind of steel box girder hoisting equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119284718A (en) * | 2024-12-13 | 2025-01-10 | 江苏三耐特种设备制造有限公司 | A lifting fixture for electric power |
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| CN117105072B (en) | 2024-02-09 |
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Effective date of registration: 20251226 Address after: 342500 Jiangxi Province Ganzhou City Ruijin City Ruilin Town Libu Village Senfeng Group 24 Hao Patentee after: Chen Qisheng Country or region after: China Address before: No. 180, Shuguang Street, south of Maogu Road, Maoshan Industrial Concentration Zone, Xinghua City, Taizhou City, Jiangsu Province, 225700 Patentee before: Taizhou Hongrun Metal Technology Co.,Ltd. Country or region before: China |