CN113682970B - Prefabricated floor hoisting structure of assembled building - Google Patents
Prefabricated floor hoisting structure of assembled building Download PDFInfo
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- CN113682970B CN113682970B CN202110906547.8A CN202110906547A CN113682970B CN 113682970 B CN113682970 B CN 113682970B CN 202110906547 A CN202110906547 A CN 202110906547A CN 113682970 B CN113682970 B CN 113682970B
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- hook
- rod
- connecting rod
- guide
- rod body
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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
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
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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
- B66C1/28—Duplicate, e.g. pivoted, members engaging the loads from two sides
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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
- B66C13/18—Control systems or devices
- B66C13/48—Automatic control of crane drives for producing a single or repeated working cycle; Programme control
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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
- B66C5/00—Base supporting structures with legs
- B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
- B66C5/06—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods with runways or tracks supported for lateral swinging movements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Automation & Control Theory (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to an assembled building precast floor slab hoisting structure, which comprises a support truss and a cross beam, wherein a hoisting platform is arranged on the cross beam, and two rows of hook assemblies are arranged on the left side and the right side of the hoisting platform; the hook unit comprises a driving structure and a main hook; the main hook comprises a connecting rod and a hook body, a guide groove is formed in the hook body, and a guide groove is formed in the hook body; the connecting rod is fixedly connected with a fixing plate, a fixing hole is formed in the fixing plate, and a proximity switch is fixed in the fixing hole; a hinge lug is arranged on one side of the connecting rod, which is away from the hook body, and a contact assembly is hinged to the hinge lug; the contact assembly comprises a first rod body, a second rod body and a contact piece; the first rod body is hinged with the hinge lug, one end, far away from the first rod body, of the second rod body is positioned in the guide groove, the contact piece is positioned in the guide groove, and the upper end of the first rod body is positioned at one side, facing away from the connecting rod, of the proximity switch; the controller is electrically connected with the proximity switch and is in control connection with the driving structure; the construction efficiency is improved, and the safety of staff is ensured.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to an assembled building precast floor slab hoisting structure.
Background
The prefabricated building is formed by assembling prefabricated components on a construction site, and a large number of prefabricated components are needed in the construction process of the prefabricated building at the present stage. The prefabricated part in the assembled building comprises a prefabricated floor slab, wherein the prefabricated floor slab comprises a bottom die, a steel bar truss fixedly connected with the bottom die through a connecting fastener and concrete poured on the bottom die, the steel bar truss comprises two lower chord steel bars, an upper chord steel bar positioned above the two lower chord steel bars, and reinforcing steel bars which are arranged in a triangular mode are fixed between the lower chord steel bars and the upper chord steel bars; the upper chord steel bars of the steel bar trusses of the precast floor slabs are positioned above the concrete after the concrete pouring is completed, and the reinforcing steel bar parts are positioned above the concrete.
In the building process of the prefabricated building, the hoisting and positioning process of the prefabricated part is the most critical, particularly when the prefabricated floor is hoisted, the prefabricated part is hoisted by using a hoisting device, the hoisting device is used for hooking the upper chord steel bars of the prefabricated floor, and then hoisting is carried out, but the arrangement of reinforcing steel bars between the upper chord steel bars and the lower chord steel bars can influence the automatic hooking of the hoisting device on the prefabricated floor by the lifting hook of the hoisting device, so that when the prefabricated floor is hoisted, operation control personnel of the hoisting device are required to keep real-time intercom with an annunciator on-site hoisting, and then are matched with on-site building workers, the lifting hook of the hoisting device avoids the reinforcing steel bars, and the upper chord steel bars of the steel bar truss are hooked smoothly, so that the hoisting and positioning of the prefabricated floor is finally completed jointly. The operation mode has the problems of low automation degree, low construction efficiency, difficult safety guarantee and the like.
Disclosure of Invention
In view of the above, the invention aims to provide an assembled building precast floor slab hoisting structure, which solves the problems of low automation degree, low construction efficiency, difficult safety guarantee and the like in the precast floor slab hoisting process in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the assembled building precast floor slab hoisting structure is as follows:
an assembled building precast floor plank hoisting structure, comprising:
support truss: the support truss comprises a left truss and a right truss which are arranged at intervals left and right;
a cross beam: the cross beam can move along the front-back direction relative to the support truss;
hoisting platform: the telescopic structure is arranged on the cross beam, and can stretch out and draw back along the up-down direction so as to realize the height adjustment of the hoisting platform;
two rows of hook assemblies are arranged on the left side and the right side of the hoisting platform, each row of hook assemblies comprises at least three groups of hook units, and the distance between adjacent hook units is larger or smaller than the distance between adjacent intersection points of reinforcing steel bars and upper chord steel bars in the prefabricated floor slab;
the hook unit comprises a driving structure relatively fixed on the hoisting platform and a main hook in transmission connection with the driving structure;
the driving structure comprises a telescopic rod which stretches left and right, the main hook is L-shaped, the main hook comprises a connecting rod which extends vertically and a hook body which is fixed at the lower end of the connecting rod, a guide groove which runs through left and right is formed in the hook body, and a guide groove which runs through front and back is formed in one end of the hook body which is far away from the connecting rod;
the upper end of the connecting rod of the main hook is in transmission connection with the telescopic rod;
the connecting rod is fixedly connected with a fixing plate, a fixing hole which is communicated with the front and the back is formed in the fixing plate, and a proximity switch is fixed in the fixing hole;
the middle part of one side of the connecting rod, which is back to the hook body, is provided with a hinge lug, the hinge lug is arranged below the fixed plate, and the hinge lug is hinged with a contact assembly;
the contact assembly comprises a first rod body, a second rod body hinged with the lower end of the first rod body, and a contact piece fixed at one end of the second rod body far away from the first rod body;
the first rod body is hinged with the hinge lug, one end, far away from the first rod body, of the second rod body is positioned in the guide groove and is in sliding fit with the guide groove, the contact piece is positioned in the guide groove and is in sliding fit with the guide groove, and the upper end of the first rod body is positioned on one side, away from the connecting rod, of the proximity switch;
the contact piece is arranged in a protruding way relative to the end face of the hook body far away from the connecting rod;
and (3) a controller: the controller is electrically connected with the proximity switch, and the controller is in control connection with the driving structure.
The beneficial effects are that: when the hoisting structure hooks the prefabricated floor slab, the telescopic structure stretches to enable the hoisting platform to move downwards, when the hoisting platform moves to a certain height, the driving structure works to drive the telescopic rod to stretch and move, so that the main hook in the hook unit in the left hook component moves rightwards, the main hook in the hook unit in the right hook component moves leftwards, in the moving process, if the contact piece in the contact component touches the reinforcing steel bar of the steel bar truss of the prefabricated floor slab, the contact piece pushes the second rod body to move towards the direction of the first rod body, so that the first rod body is driven to rotate around the hinge point, the upper end of the second rod body touches the proximity switch, the proximity switch transmits a signal to the controller, and the controller controls the driving structure to stop working, so that the main hook stops moving; if the contact piece in the contact assembly does not touch the reinforcing steel bars of the steel bar truss of the precast floor slab, the main hook continues to move and is hooked on the upper chord steel bars of the steel bar truss of the precast floor slab, so that the precast floor slab is hoisted.
Further, a reset spring is arranged between the connecting rod and the first rod body; one side of the first rod body facing the connecting rod is provided with a limiting protrusion.
The beneficial effects are that: the reset spring can ensure that the first rod body is positioned relative to the connecting rod, so that the second rod body is positioned in the guide groove, the contact piece is arranged in a protruding manner relative to the end face of the hook body, which is far away from the connecting rod, and further, when the main hook moves towards the steel bar truss, if the reinforcing steel bar is met, the contact piece can be contacted with the reinforcing steel bar firstly; the limiting protrusion can limit the first rod body, and the contact piece is prevented from falling out of the guide groove.
The lower extreme of first body of rod is provided with the regulation slot hole, the one end of second body of rod towards first body of rod is provided with wears to establish in the regulation slot hole and with regulation slot hole sliding fit's guide post.
The beneficial effects are that: when the second rod body moves along the guide groove, the arrangement of the guide post and the adjusting long hole can ensure that the second rod body pushes the first rod body to rotate around the hinge point, so that the top end of the first rod body contacts the proximity switch, and the work of the driving structure is controlled.
The lifting platform is characterized in that a guide rod extending along the left-right direction is fixedly arranged below the lifting platform, a driving structure is fixed below the guide rod, a transmission block is fixed between a telescopic rod of the driving structure and the main hook, and a U-shaped groove matched with the guide rod in a sliding mode is formed in the top of the transmission block.
The beneficial effects are that: the guide rod is in guide sliding fit with the U-shaped groove, and under the driving of the driving structure, the main hook can be guaranteed to move along the extending direction of the guide rod, namely, the extending direction of the telescopic rod of the driving structure and the moving direction of the main hook are located on a straight line, so that the force transmission between the driving structure and the main hook is facilitated.
Further, the recess includes preceding cell wall, back cell wall, connects preceding cell wall and the diapire of back cell wall, and the upper end of preceding cell wall is provided with the direction stupefied of backward protrusion, and the upper end of back cell wall is provided with the direction stupefied of forward protrusion, be provided with the spout that extends along left and right directions on the guide bar, spout and the direction stupefied slip adaptation.
The beneficial effects are that: the guide rib is matched with the chute in a guide sliding manner, and the main hook is hooked in the chute through the guide rib, so that the main hook is prevented from falling down.
The fixed plate is L-shaped, comprises a first plate body extending along the front-back direction and a second plate body fixed at the front end of the first plate body and extending along the left-right direction, wherein the first plate body is fixed on the connecting rod, and the fixing hole is formed in the second plate body.
The beneficial effects are that: the structure form of fixed plate has made things convenient for proximity switch to extend along fore-and-aft direction to be arranged, and the structure form of fixed plate guarantees its stability of being connected with the connecting rod.
The middle part of the hinge lug is provided with a crack, and the first rod body is arranged in the crack.
The beneficial effects are that: the setting of crack is spacing at the fore-and-aft direction to the first body of rod, avoids the first body of rod to remove in fore-and-aft direction for articulated ear.
The hook units in the two rows of hook assemblies are correspondingly arranged left and right.
The beneficial effects are that: the hook units are regularly arranged, so that the positioning and the installation of the hook units are convenient.
Each row of hook assemblies includes five sets of hook elements.
The beneficial effects are that: the hook units are hung on the upper chord steel bars of the steel bar truss of the precast floor slab as much as possible, so that the precast floor slab can be hoisted smoothly.
The upper portion of left truss is fixed to be provided with the left track that extends along fore-and-aft direction, and the upper portion of right truss is fixed to be provided with the right track that extends along fore-and-aft direction, the crossbeam sets up between left track and right track, the left end and the left track direction sliding fit of crossbeam, the right end and the right track direction sliding fit of crossbeam.
The beneficial effects are that: the arrangement of the left rail and the right rail ensures that the cross beam can smoothly move in the front-back direction.
Drawings
FIG. 1 is a schematic structural view of an assembled building precast floor plank lifting structure of the present invention;
FIG. 2 is a schematic illustration of a hook unit and guide bar of the assembled building precast floor plank lifting structure of FIG. 1;
fig. 3 is a schematic view of the structure of the main hook of the hooking unit of fig. 2;
fig. 4 is a schematic structural view of a contact assembly of the hooking unit of fig. 2.
Reference numerals: 1-left truss; 2-right truss; 3-a cross beam; 4-a telescopic hydraulic cylinder; 5-hoisting the platform; 6-a hook unit; 7-a guide rod; 8-a chute; 9-driving a hydraulic cylinder; 10-a transmission block; 11-grooves; 12-connecting rods; 13-a hook body; 14-fixing plates; 15-hinging lugs; 16-fixing holes; 17-proximity switch; 18-a first rod body; 19-a second rod body; 20-contact pieces; 21-limit protrusions; 22-a return spring; 23-an adjustment slot; 24-clamping seams; 25-a first connection post; 26-a guide groove; 27-a guide groove; 28-a second connection post.
Detailed Description
The invention relates to an assembled building precast floor plank hoisting structure, which is further described in detail below with reference to the attached drawings and the detailed description:
as shown in fig. 1, the prefabricated floor slab hoisting structure for the fabricated building comprises a support truss fixed on the ground, wherein the support truss comprises a left truss 1 and a right truss 2 which are arranged at intervals left and right, the left truss 1 comprises a vertical frame which is arranged at intervals front and back in parallel and a top frame which is fixed at the upper end of the vertical frame and extends along the front and back direction, and the top frame is provided with a left rail which extends along the front and back direction; the right truss 2 comprises vertical frames which are arranged in a front-back parallel and spaced mode and a top frame which is fixed at the upper end of the vertical frames and extends along the front-back direction, and right rails which extend along the front-back direction are arranged on the top frame. A cross member 3 is provided between the left truss 1 and the right truss 2, and the cross member 3 is movable in the front-rear direction with respect to the support truss. Specifically, the crossbeam 3 sets up between left track and right track, and the left end and the left track direction sliding fit of crossbeam 3, the right-hand member and the right track direction sliding fit of crossbeam 3. Specifically, drive motors for driving the cross members 3 to extend in the front-rear direction are respectively provided on the top frames.
The middle part at crossbeam 3 is fixed with extending structure, and extending structure's flexible end is located the lower extreme of crossbeam 3, and extending structure's flexible end is fixed with hoisting platform 5, and extending structure can be followed the upper and lower direction and is flexible to realize the altitude mixture control to hoisting platform 5. In this embodiment, the telescopic structure is a telescopic hydraulic cylinder 4; the hoisting platform 5 is a flat plate-shaped structure parallel to the ground.
Two rows of hook assemblies are arranged on the left side and the right side of the hoisting platform 5, each row of hook assemblies comprises at least three groups of hook units 6, and the hook units 6 in each row of hook assemblies are correspondingly arranged on the left side and the right side, and in the embodiment, each row of hook assemblies comprises five groups of hook units 6. The distance between the adjacent hook units 6 is larger than the distance between adjacent intersection points of the reinforcing steel bars and the upper chord steel bars in the precast floor slab, so that when one of the hook units 6 can not be hooked with the upper chord steel bars of the steel bar truss due to the arrangement of the reinforcing steel bars, the rest hook units can be hooked with the upper chord steel bars. In other embodiments, the distance between adjacent hook units 6 is less than the distance between adjacent intersections of reinforcing bars and upper chord bars in a precast floor slab.
As shown in fig. 2, a guide rod 7 extending in the left-right direction is fixedly arranged below the hoisting platform 5, the left end of the guide rod 7 is flush with the left side of the hoisting platform 5, the right end of the guide rod 7 is flush with the right side of the hoisting platform 5, and the hook unit 6 is fixed on the guide rod 7 to realize the fixed connection of the hook unit 6 relative to the hoisting platform 5. In this embodiment, the guide bar 7 has a rectangular cross-sectional shape.
As shown in fig. 2, the hook unit 6 includes a driving structure relatively fixed on the hoisting platform 5 and a main hook in transmission connection with the driving structure, and in particular, the driving structure is fixed on the guide member through a U-shaped fixing member, and in this embodiment, the driving structure is a driving hydraulic cylinder 9. The driving hydraulic cylinder 9 includes a telescopic rod which can be extended and contracted from left to right, and the telescopic rod of the driving hydraulic cylinder 9 is positioned below the guide rod 7 and is arranged in parallel with the upper and lower sides of the guide rod 7. A transmission block 10 is fixed between the telescopic rod of the driving hydraulic cylinder 9 and the main hook, and a U-shaped groove 11 which is matched with the guide rod 7 in a sliding way is arranged at the top of the transmission block 10. The guide rod 7 and the U-shaped groove 11 are in guide sliding fit, and under the driving of the driving structure, the main hook can be guaranteed to move along the extending direction of the guide rod 7, namely, the extending and contracting direction of the telescopic rod of the driving structure and the moving direction of the main hook are positioned on a straight line, so that the force transmission between the driving structure and the main hook is facilitated.
The recess 11 includes preceding cell wall, back cell wall, the diapire of connecting preceding cell wall and back cell wall, and the upper end of preceding cell wall is provided with the direction stupefied of back bulge, and the upper end of back cell wall is provided with the direction stupefied of forward bulge, be provided with on the guide bar 7 along the spout 8 of controlling the orientation extension, spout 8 and the direction stupefied slip adaptation. The main hook is hooked in the chute 8 through the guide rib, so that the main hook is prevented from falling down.
Specifically, as shown in fig. 3, the main hook is L-shaped, and includes a vertically extending connecting rod 12 and a hook body 13 fixed at the lower end of the connecting rod 12, a guide groove 26 penetrating left and right is provided on the hook body 13, and a guide groove 27 penetrating front and back is provided at one end of the hook body 13 far away from the connecting rod 12. The upper end of the connecting rod 12 of the main hook is fixedly connected with the transmission block 10.
The fixed connection of connecting rod 12 has fixed plate 14, in this embodiment, fixed plate 14 is the L form, including the first plate body that extends along fore-and-aft direction and fix at first plate body front end and along the second plate body that extends of left and right directions, first plate body is fixed on connecting rod 12, has seted up fixed orifices 16 on the second plate body, in this embodiment, fixed orifices 16 are rectangular hole, are fixed with the proximity switch 17 that extends along fore-and-aft direction in the fixed orifices 16, proximity switch 17 is including the touching section that is located the second plate body rear side. The proximity switch 17 is located on the side of the proximity switch 17 touching the segment facing away from the connecting rod 12.
The connecting rod 12 is provided with articulated ear 15 in the middle part of one side of the hook body 13 dorsad, and articulated ear 15 sets up in the fixed plate 14 below, and articulated ear 15 middle part is provided with the crack 24 that the opening deviates from connecting rod 12, is provided with the contact assembly in the crack 24, and contact assembly and articulated ear 15 are articulated to be connected.
As shown in fig. 4, the contact assembly includes a first rod 18, a second rod 19 hinged to the lower end of the first rod 18, and a contact 20 fixed to the end of the second rod 19 away from the first rod 18. The first rod body 18 is located in the crack 24 and is hinged with the hinge lug 15, an adjusting long hole 23 is formed in the lower end of the first rod body 18, a guide column penetrating through the adjusting long hole 23 and in sliding fit with the adjusting long hole 23 is arranged at one end, facing the first rod body 18, of the second rod body 19, and the long shaft of the adjusting long hole 23 extends in the vertical direction. When the second rod 19 moves along the guide groove 26, the arrangement of the guide post and the adjusting long hole 23 can ensure that the second rod 19 pushes the first rod 18 to rotate around the hinge point, so that the top end of the first rod 18 touches the proximity switch 17. The end of the second rod body 19, which is far away from the first rod body 18, is located in the guide groove 26 and is in sliding fit with the guide groove 26, the contact 20 is located in the guide groove 27 and is in sliding fit with the guide groove 27, and the upper end of the first rod body 18 is located on the side of the proximity switch 17, which is far away from the connecting rod 12. The contact piece 20 protrudes with respect to the end face of the hook body 13 remote from the connecting rod 12. In this embodiment, the contact 20 has a horizontally arranged sheet structure, and the size of the contact 20 in the front-rear direction is larger than the size of the hook 13 in the front-rear direction.
A reset spring 22 is arranged between the connecting rod 12 and the first rod body 18, a first connecting column 25 is fixed on the front side of the specific connecting rod 12, a second connecting column 28 is fixed on the front side of the first rod body 18, one end of the reset spring 22 is hooked on the first connecting column 25, the other end of the reset spring 22 is hooked on the second connecting column 28, the reset spring 22 is arranged to enable the main hook and the contact assembly to be kept in an initial state, in this embodiment, the initial state is that the second rod body 19 is located in the guide groove 26, the contact piece 20 is located in the guide groove 27, and the contact piece 20 is enabled to be arranged to protrude relative to the end face of the hook body 13 far away from the connecting rod 12, and then when the main hook moves towards the steel bar truss, if a reinforcing steel bar is encountered, the contact piece 20 and the reinforcing steel bar can be contacted first.
The one side of the first body of rod 18 towards connecting rod 12 is provided with spacing protruding 21, and when return spring 22 is pulling first body of rod 18 and is rotating to a certain degree towards connecting rod 12, spacing protruding 21 can support the one side towards first body of rod 18 of connecting rod 12 to carry out spacing to first body of rod 18, avoid first body of rod 18 turned angle too big to lead to contact 20 to deviate from in the guide slot 27.
The hoisting structure of the invention further comprises a controller, in the embodiment, the controller is a PLC, the controller is in control connection with the telescopic hydraulic cylinder 4, the controller is electrically connected with the proximity switch 17, the controller is in control connection with the driving structure, and the controller is in control connection with the driving motor.
When the assembled building precast floor slab hoisting structure is used, under the action of the driving motor, the cross beam 3 moves back and forth between the left rail and the right rail to enable the hoisting platform 5 to be positioned right above the precast floor slab, then the controller controls the telescopic hydraulic cylinder 4 to act to enable the hoisting platform 5 to move downwards until the hook body 13 of the main hook is positioned at a position slightly lower than the height of an upper chord steel bar of a steel bar truss of the precast floor slab, and the height control of the main hook when moving downwards is the prior art and is not repeated; then the controller controls the driving hydraulic cylinder 9 to act, so that the telescopic rod of the driving hydraulic cylinder 9 drives the main hook and the contact assembly to move towards the winding steel bar of the steel bar truss, when the contact assembly contacts the reinforcing steel bar of the steel bar truss of the prefabricated floor slab, the contact 20 pushes the second rod body 19 to move towards the first rod body 18, so that the first rod body 18 is driven to rotate around the hinging point, the upper end of the second rod body 19 contacts the proximity switch 17, the proximity switch 17 transmits a signal to the controller, the controller controls the driving structure to stop working, so that the main hook stops moving, and the main hook does not continue to carry out hooking action; if the contact piece 20 in the contact assembly does not touch the reinforcing steel bars of the steel bar truss of the precast floor slab, the main hook continues to move and is hooked on the upper chord steel bars of the steel bar truss of the precast floor slab, so that the precast floor slab is hoisted.
In the above embodiment, a return spring is disposed between the connecting rod and the first rod body; a limiting protrusion is arranged on one side of the first rod body, which faces the connecting rod; in other embodiments, the return spring may not be provided, or the limit protrusion may not be provided, and at this time, the size of the contact plate in the left-right direction is longer, and when the first rod body touches the connecting rod, the contact plate is still located in the guide groove.
In the above embodiment, an adjustment slot hole is provided at the lower end of the first rod body, and a guide post penetrating the adjustment slot hole and slidably engaged with the adjustment slot hole is provided at one end of the second rod body facing the first rod body; in other embodiments, a guide post is fixedly arranged at the lower end of the first rod body, and an adjusting long hole is formed in one end, facing the first rod body, of the second rod body.
In the above embodiment, a guide rod extending along the left-right direction is fixedly arranged below the hoisting platform, the driving structure is fixed below the guide rod, a transmission block is fixed between the telescopic rod of the driving structure and the main hook, and a U-shaped groove in sliding fit with the guide rod is arranged at the top of the transmission block; in other embodiments, the transmission block may not be provided, and the telescopic rod of the driving structure is directly and fixedly connected with the main hook, and a groove in sliding fit with the guide rod in a guiding manner is provided at the top of the main hook.
In the above embodiment, the groove includes a front groove wall, a rear groove wall, and a bottom wall connecting the front groove wall and the rear groove wall, the upper end of the front groove wall is provided with a guide rib protruding backward, the upper end of the rear groove wall is provided with a guide rib protruding forward, the guide rod is provided with a sliding groove extending along the left-right direction, and the sliding groove is in sliding fit with the guide rib; in other embodiments, the upper end of the front groove wall is provided with a forward concave guide groove, the upper end of the rear groove wall is provided with a backward concave guide groove, and the guide rod is provided with a guide rib which is in sliding fit with the guide groove.
In the above embodiment, the fixing plate is L-shaped, and includes a first plate body extending in a front-rear direction and a second plate body fixed at a front end of the first plate body and extending in a left-right direction, the first plate body is fixed on the connecting rod, and the fixing hole is opened on the second plate body; in other embodiments, the fixing plate is flat, and one end of the fixing plate facing the connecting rod is fixedly connected with the connecting rod.
In the above embodiment, a slit is formed in the middle of the hinge lug, and the first rod body is disposed in the slit; in other embodiments, no seam may be provided on the hinge eyes.
In the above embodiment, the hook units in the two rows of hook assemblies are correspondingly arranged left and right; in other embodiments, the hook units in the two rows of hook assemblies are staggered left and right.
In the above embodiment, each row of hook assemblies includes five sets of hook units; in other embodiments, each column of hook assemblies includes three sets of hook units; or each column of hook assemblies includes four sets of hook elements.
Claims (10)
1. An assembled building precast floor plank hoisting structure, characterized by comprising:
support truss: the support truss comprises a left truss and a right truss which are arranged at intervals left and right;
a cross beam: the cross beam can move along the front-back direction relative to the support truss;
hoisting platform: the telescopic structure is arranged on the cross beam, and can stretch out and draw back along the up-down direction so as to realize the height adjustment of the hoisting platform;
two rows of hook assemblies are arranged on the left side and the right side of the hoisting platform, each row of hook assemblies comprises at least three groups of hook units, and the distance between adjacent hook units is larger or smaller than the distance between adjacent intersection points of reinforcing steel bars and upper chord steel bars in the prefabricated floor slab;
the hook unit comprises a driving structure relatively fixed on the hoisting platform and a main hook in transmission connection with the driving structure;
the driving structure comprises a telescopic rod which stretches left and right, the main hook is L-shaped, the main hook comprises a connecting rod which extends vertically and a hook body which is fixed at the lower end of the connecting rod, a guide groove which runs through left and right is formed in the hook body, and a guide groove which runs through front and back is formed in one end of the hook body which is far away from the connecting rod;
the upper end of the connecting rod of the main hook is in transmission connection with the telescopic rod;
the connecting rod is fixedly connected with a fixing plate, a fixing hole which is communicated with the front and the back is formed in the fixing plate, and a proximity switch is fixed in the fixing hole;
the middle part of one side of the connecting rod, which is back to the hook body, is provided with a hinge lug, the hinge lug is arranged below the fixed plate, and the hinge lug is hinged with a contact assembly;
the contact assembly comprises a first rod body, a second rod body hinged with the lower end of the first rod body, and a contact piece fixed at one end of the second rod body far away from the first rod body;
the first rod body is hinged with the hinge lug, one end, far away from the first rod body, of the second rod body is positioned in the guide groove and is in sliding fit with the guide groove, the contact piece is positioned in the guide groove and is in sliding fit with the guide groove, and the upper end of the first rod body is positioned on one side, away from the connecting rod, of the proximity switch;
the contact piece is arranged in a protruding way relative to the end face of the hook body far away from the connecting rod;
and (3) a controller: the controller is electrically connected with the proximity switch, and the controller is in control connection with the driving structure.
2. The prefabricated floor slab hoisting structure for the fabricated building according to claim 1, wherein a return spring is arranged between the connecting rod and the first rod body; one side of the first rod body facing the connecting rod is provided with a limiting protrusion.
3. The prefabricated floor slab hoisting structure for the fabricated building according to claim 1 or 2, wherein an adjusting long hole is formed in the lower end of the first rod body, and a guide post penetrating through the adjusting long hole and in sliding fit with the adjusting long hole is arranged at one end, facing the first rod body, of the second rod body.
4. The prefabricated floor slab hoisting structure for the fabricated building according to claim 1 or 2, wherein a guide rod extending along the left-right direction is fixedly arranged below the hoisting platform, the driving structure is fixed below the guide rod, a transmission block is fixed between a telescopic rod and the main hook of the driving structure, and a U-shaped groove matched with the guide rod in a sliding manner is formed in the top of the transmission block.
5. The prefabricated floor slab hoisting structure for the fabricated building according to claim 4, wherein the groove comprises a front groove wall, a rear groove wall and a bottom wall connecting the front groove wall and the rear groove wall, a guide rib protruding backwards is arranged at the upper end of the front groove wall, a guide rib protruding forwards is arranged at the upper end of the rear groove wall, a sliding groove extending along the left-right direction is arranged on the guide rod, and the sliding groove is matched with the guide rib in a sliding manner.
6. The prefabricated floor slab hoisting structure for the fabricated building according to claim 1 or 2, wherein the fixing plate is L-shaped and comprises a first plate body extending along the front-rear direction and a second plate body fixed at the front end of the first plate body and extending along the left-right direction, the first plate body is fixed on the connecting rod, and the fixing hole is formed in the second plate body.
7. An assembled building precast floor plank hoisting structure according to claim 1 or 2, wherein a slit is arranged in the middle of the hinge lug, and the first rod body is arranged in the slit.
8. A prefabricated floor slab hoisting structure for an assembled building according to claim 1 or 2, wherein the hook units in the two rows of hook assemblies are correspondingly arranged left and right.
9. A prefabricated building floor lifting structure according to claim 8 wherein each column of hook assemblies comprises five sets of hook units.
10. The prefabricated floor slab hoisting structure for the fabricated building according to claim 1 or 2, wherein a left rail extending in the front-rear direction is fixedly arranged on the upper portion of the left truss, a right rail extending in the front-rear direction is fixedly arranged on the upper portion of the right truss, the cross beam is arranged between the left rail and the right rail, the left end of the cross beam is in guide sliding fit with the left rail, and the right end of the cross beam is in guide sliding fit with the right rail.
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| CN202110906547.8A CN113682970B (en) | 2021-08-09 | 2021-08-09 | Prefabricated floor hoisting structure of assembled building |
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| CN202110906547.8A CN113682970B (en) | 2021-08-09 | 2021-08-09 | Prefabricated floor hoisting structure of assembled building |
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| CN113682970B true CN113682970B (en) | 2023-08-22 |
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| JP6042021B1 (en) * | 2016-09-15 | 2016-12-14 | 株式会社富士昭技研 | Floor construction method, lifting jig for floor slab unit, and lifting device for floor slab unit |
| CN106245919A (en) * | 2016-08-30 | 2016-12-21 | 中国建筑第七工程局有限公司 | A kind of assembled architecture Automated assembly platform |
| CN110304521A (en) * | 2019-06-24 | 2019-10-08 | 北京建工一建工程建设有限公司 | Super high-rise building overweight equipment handling apparatus |
| CN111960251A (en) * | 2020-08-28 | 2020-11-20 | 江苏银环新材料科技有限公司 | Steel bar truss hoisting method and steel bar truss hoisting tool thereof |
| CN213112210U (en) * | 2020-08-31 | 2021-05-04 | 中铁六局集团有限公司 | Prefab handling frock |
| CN213356689U (en) * | 2020-09-24 | 2021-06-04 | 威海玉全新型建筑材料股份有限公司 | Lifting appliance for prefabricated laminated plate |
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2021
- 2021-08-09 CN CN202110906547.8A patent/CN113682970B/en active Active
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| CN106245919A (en) * | 2016-08-30 | 2016-12-21 | 中国建筑第七工程局有限公司 | A kind of assembled architecture Automated assembly platform |
| JP6042021B1 (en) * | 2016-09-15 | 2016-12-14 | 株式会社富士昭技研 | Floor construction method, lifting jig for floor slab unit, and lifting device for floor slab unit |
| CN110304521A (en) * | 2019-06-24 | 2019-10-08 | 北京建工一建工程建设有限公司 | Super high-rise building overweight equipment handling apparatus |
| CN111960251A (en) * | 2020-08-28 | 2020-11-20 | 江苏银环新材料科技有限公司 | Steel bar truss hoisting method and steel bar truss hoisting tool thereof |
| CN213112210U (en) * | 2020-08-31 | 2021-05-04 | 中铁六局集团有限公司 | Prefab handling frock |
| CN213356689U (en) * | 2020-09-24 | 2021-06-04 | 威海玉全新型建筑材料股份有限公司 | Lifting appliance for prefabricated laminated plate |
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| CN113682970A (en) | 2021-11-23 |
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