CN112482789B - Detachable support frame for hoisting large-span prefabricated part and manufacturing method thereof - Google Patents
Detachable support frame for hoisting large-span prefabricated part and manufacturing method thereof Download PDFInfo
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- CN112482789B CN112482789B CN202011367445.5A CN202011367445A CN112482789B CN 112482789 B CN112482789 B CN 112482789B CN 202011367445 A CN202011367445 A CN 202011367445A CN 112482789 B CN112482789 B CN 112482789B
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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
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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
- E04G25/00—Shores or struts; Chocks
- E04G25/04—Shores or struts; Chocks telescopic
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Abstract
The invention discloses a detachable support frame for hoisting a large-span prefabricated part and a manufacturing method thereof, wherein the detachable support frame comprises the following steps: girder steel, steel sheet, a plurality of flexible bracing, a plurality of bracing sign indicating number, stiffening rib plate, the relative both sides face of girder steel all weld with the girder steel top surface is parallel the steel sheet, perpendicular the girder steel with the welding seam department welding of steel sheet has the stiffening rib plate, the welding has on the girder steel the bracing sign indicating number, the one end of flexible bracing with the bracing sign indicating number is connected. The steel sheet is used for passing through bolted connection with girder steel and building prefabricated component, and convenient and reuse is dismantled in the installation, and the multiplicable steel sheet of stiffening rib board and girder steel welding department's intensity reduces the damage, and a plurality of bracing yards that are equipped with on the girder steel are used for connecting a plurality of flexible rakes, and a plurality of flexible rakes play the supporting role, increase the rigidity of support frame, prevent that building prefabricated component atress is inhomogeneous when hoisting and lead to great deformation or fracture.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a detachable support frame for hoisting a large-span prefabricated member and a manufacturing method thereof.
Background
In the building field, the traditional construction mode has the problems of large investment of template materials, long template-supporting and template-removing time, low turnover rate of the mold, large labor demand, poor site construction environment, serious noise and dust pollution, more potential safety hazards and the like. The assembly type building is a building mode that building components are prefabricated in a factory and then components are transported to the site to be installed and assembled, and the defects of a traditional building mode can be effectively overcome. Compared with the traditional cast-in-place building mode, the assembly type building production environment is stable, the production labor condition of workers is good, the labor productivity is high, the turnover rate of the template is high, and the product quality is easy to control. Meanwhile, the field wet operation is less, the construction procedures are reduced, the labor force requirement is low, the construction speed is high, the weather influence is low, the construction period can be effectively shortened, and the construction environment is improved. The method is a novel construction mode with high efficiency, energy conservation and environmental protection, and assembly type buildings are adopted by more and more developers in recent years.
There are large span elements in the building prefabricated elements, which often need to be supported during hoisting to prevent the concrete elements from cracking or even breaking. The traditional temporary support is mostly a single support rod, the building prefabricated part is easy to deform when being lifted, and the rigidity of the building prefabricated part cannot be guaranteed, so that a detachable support frame for hoisting a large-span prefabricated part and a manufacturing method thereof are necessary to be provided, and the problems in the prior art are at least partially solved.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In order to at least partially solve the problems, the invention provides a detachable support frame for hoisting a large-span prefabricated member and a manufacturing method thereof, wherein the detachable support frame comprises the following steps: girder steel, steel sheet, a plurality of flexible bracing, a plurality of bracing sign indicating number, stiffening rib plate, the relative both sides face of girder steel all weld with the girder steel top surface is parallel the steel sheet, perpendicular the girder steel with the welding seam department welding of steel sheet has the stiffening rib plate, the welding has on the girder steel the bracing sign indicating number, the one end of flexible bracing with the bracing sign indicating number is connected.
Preferably, the steel beam adopts the clod wash steel pipe, the steel beam includes: the top beam and the bottom beam are connected through the telescopic diagonal braces and the diagonal brace codes, the diagonal brace codes are welded on the bottom surface of the top beam and the top surface of the bottom beam, and two ends of each telescopic diagonal brace are respectively connected with the diagonal brace codes on the top beam and the diagonal brace codes on the bottom beam through bolts; the top surface of roof beam with rather than being connected the top surface parallel and level of steel sheet, the bottom surface of floorbar with rather than being connected the bottom surface parallel and level of steel sheet.
Preferably, the length of steel sheet with the length of girder steel is equal, be equipped with a plurality of trompils on the steel sheet, the welding has in the position apart from trompil 50mm stiffening rib plate.
Preferably, the top surface of the top beam is connected with the top of a prefabricated part, the bottom surface of the bottom beam is connected with the bottom of the prefabricated part, a plurality of wire lugs are embedded in the top of the prefabricated part and the bottom of the prefabricated part, the wire lugs correspond to the openings, and the top of the prefabricated part and the bottom of the prefabricated part are respectively connected with the steel plate through bolts.
Preferably, the telescopic diagonal brace includes: the upper end and the lower end of the threaded sleeve are movably provided with the connecting rod, the extending ends of the connecting rod are connected with the inclined strut through bolts, the locking mechanisms are arranged in the upper end and the lower end of the threaded sleeve, one side of each locking mechanism extends out of the outer side wall of the threaded sleeve, the locking nut is sleeved on the outer side of the threaded sleeve, the locking nuts are compressed inwards, and the locking mechanisms lock the threaded sleeve and the connecting rod.
Preferably, two ends of the threaded sleeve are fixedly connected with baffle rings, external threads are arranged on the outer side of the threaded sleeve, notches are formed in the outer circular surfaces of the two ends of the threaded sleeve, a locking cavity is formed in each notch, a through hole is formed in the axis of the threaded sleeve, the locking cavity is communicated with the through hole, first grooves are formed in two end surfaces in the length direction of the locking cavity, each first groove extends to the outer side of the threaded sleeve along the radial direction of the threaded sleeve, six first lugs are arranged on two end surfaces in the width direction of the locking cavity, the six first lugs are distributed in two rows in a corresponding mode, and the six first lugs are distributed at equal intervals in the vertical direction and the left direction;
the locking mechanism is arranged in the locking cavity, one side of the locking mechanism protrudes out of the notch, a second groove is formed in the outer circular surface of the connecting rod, a plurality of first locking blocks which are distributed at equal intervals are arranged on the bottom surface of the second groove, and the first locking blocks are matched and locked with the locking mechanism.
Preferably, the locking mechanism includes: the locking device comprises a body, a pressing plate and a plurality of second locking blocks, wherein the pressing plate is arranged on one side of the body, two ends of the pressing plate protrude out of the body, a dovetail-shaped sliding groove is formed in the other side, opposite to the pressing plate, of the body, a stop block corresponding to the second locking block is arranged at one end, close to the stop ring, of the dovetail-shaped sliding groove, one end of the second locking block is connected in the dovetail-shaped sliding groove in a sliding mode, and the end, connected with the dovetail-shaped sliding groove, of the second locking block is in a dovetail shape; an elastic piece is arranged between the stop block and the second locking block adjacent to the stop block, the elastic piece is also arranged between two adjacent second locking blocks, and the second locking blocks are matched with the first locking blocks; third grooves are formed in two opposite side faces of the body, and six second convex blocks matched with the six first convex blocks are arranged in the third grooves; the two ends of the pressing plate are close to one side of the connecting rod, springs are connected to the other ends of the springs, and the baffles are connected to the first grooves in a sliding mode.
The invention also provides a manufacturing method of the detachable support frame for hoisting the large-span prefabricated member, which comprises any one of the detachable large-span temporary support frame and the following steps:
step 1: manufacturing a building prefabricated part, and embedding a plurality of wire lugs in the top of the prefabricated part and the bottom of the prefabricated part respectively;
step 2: arranging a plurality of openings on a steel plate with the same length as the steel beam, wherein the positions where the plurality of openings are arranged are matched with the positions of the pre-embedded wire lugs;
and step 3: welding the steel plates on two opposite sides of the steel beam, wherein the steel beam comprises a top beam and a bottom beam, the top surface of the top beam is flush with the top surface of the steel plate welded with the top beam, and the bottom surface of the bottom beam is flush with the bottom surface of the steel plate welded with the bottom beam;
and 4, step 4: welding a stiffening rib plate at a position 50mm away from the opening of the steel plate, wherein the stiffening rib plate is vertical to the welding line of the steel plate and the steel beam;
and 5: welding a plurality of diagonal bracing codes on the bottom surface of the top beam and the top surface of the bottom beam;
step 6: the top beam and the top of the prefabricated part, the bottom beam and the bottom of the prefabricated part are connected together through bolts and the wire lugs, and then the two ends of the telescopic inclined strut are respectively connected with the inclined strut code on the top beam and the inclined strut code on the bottom beam, so that the top beam and the bottom beam are connected into a whole.
Preferably, the steel beam is a cold-bending steel tube with a rectangular cross section, and the cross section of the steel beam can determine whether the steel beam meets the use standard through the maximum deformation amount generated by stress, and the method comprises the following specific steps:
step 1: calculating the bending moment of inertia of the cross section of the steel beam
：
Wherein the content of the first and second substances,
is the cross-sectional width of the steel beam,
is the height of the section of the steel beam,
the wall thickness of the steel beam;
step 2: calculating the maximum deflection generated when the steel beam is stressed
：
Wherein the content of the first and second substances,
the load to which the steel beam is subjected in its height direction,
the length of the steel beam is taken as the length,
is the initial modulus of elasticity of the steel beam material,
the bending moment born by the cross section when the maximum stress on the cross section of the steel beam reaches the yield stress,
is the strain hardening coefficient of the steel beam material,
is a constant;
and step 3: calculating the maximum deformation of the steel beam:
wherein the content of the first and second substances,
and
is a constant, is a parameter related to the boundary condition when the steel beam is forced to bend;
therefore, after the section of the steel beam is selected, the maximum deformation of the steel beam under stress is calculated, and the steel beam is ensured not to exceed the maximum deformation when in use.
Compared with the prior art, the invention at least comprises the following beneficial effects:
according to the detachable support frame for hoisting the large-span prefabricated part and the manufacturing method thereof, the steel plate is used for connecting the steel beam with the prefabricated building part through the bolts, the mounting and the dismounting are convenient and can be repeatedly used, the reinforcing rib plate can increase the strength of the welding part of the steel plate and the steel beam and reduce the damage, the plurality of inclined strut codes arranged on the steel beam are used for connecting the plurality of telescopic inclined struts, the plurality of telescopic inclined struts play a supporting role, the rigidity of the support frame is increased, and the prefabricated building part is prevented from being deformed or cracked due to uneven stress when being hoisted.
Other advantages, objects, and features of the present invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the present invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic overall structure diagram of a detachable support frame for hoisting a large-span prefabricated part and a manufacturing method thereof.
FIG. 2 is a schematic view of a connecting structure of a bottom beam, a steel plate, a stiffening rib plate and the bottom of a prefabricated part in the detachable support frame for hoisting a large-span prefabricated part and the manufacturing method thereof.
Fig. 3 is a schematic view of a welding structure of a diagonal brace code in the detachable support frame for hoisting a large-span prefabricated member and the manufacturing method thereof.
Fig. 4 is a schematic view of a connection structure of a steel beam and a telescopic diagonal brace in the detachable support frame for hoisting a large-span prefabricated member and the manufacturing method thereof.
Fig. 5 is a partially enlarged structural schematic view of fig. 4 in the detachable support frame for hoisting the large-span prefabricated part and the manufacturing method thereof according to the present invention.
Fig. 6 is a structural schematic diagram of a detachable support frame for hoisting a large-span prefabricated member and a locking mechanism in an unlocked state in the manufacturing method of the detachable support frame.
Fig. 7 is a structural schematic diagram of a locking state of a locking mechanism in the detachable support frame for hoisting the large-span prefabricated member and the manufacturing method thereof according to the invention.
Fig. 8 is an enlarged structural schematic view of a detachable support frame for hoisting a large-span prefabricated part and a manufacturing method thereof shown in fig. 7.
Fig. 9 is a schematic view of a part of connection between a threaded sleeve and a connecting rod in the detachable support frame for hoisting a large-span prefabricated member and the manufacturing method thereof according to the present invention.
Fig. 10 is a partial structural schematic view of a threaded sleeve in the detachable support frame for hoisting a large-span prefabricated part and the manufacturing method thereof according to the invention.
Fig. 11 is a schematic partial structural sectional view of a threaded sleeve in the detachable support frame for hoisting a large-span prefabricated part and the manufacturing method thereof according to the present invention.
Fig. 12 is a partial structural schematic view of a connecting rod in the detachable support frame for hoisting a large-span prefabricated member and the manufacturing method thereof according to the invention.
Fig. 13 is a schematic structural diagram of a detachable support frame for hoisting a large-span prefabricated part and a locking mechanism in the manufacturing method of the detachable support frame.
Fig. 14 is a schematic structural diagram of a detachable support frame for hoisting a large-span prefabricated part and a body in the manufacturing method thereof.
Fig. 15 is a schematic structural view of the detachable support frame for hoisting a large-span prefabricated member and the manufacturing method thereof, wherein one end of the detachable support frame is connected with a locking mechanism when the telescopic diagonal brace is in the shortest state.
Fig. 16 (a) is a schematic diagram of a position relationship between the first projection and the second projection when the locking mechanism is unlocked in the detachable support frame for hoisting the large-span prefabricated member and the manufacturing method thereof according to the present invention.
Fig. 16 (b) is a schematic diagram of a position relationship between the first projection and the second projection when the locking mechanism locks in the detachable support frame for hoisting the large-span prefabricated member and the manufacturing method thereof according to the present invention.
The steel beam is 1, the top beam is 11, the bottom beam is 12, the steel plate is 2, the telescopic diagonal brace is 3, the threaded sleeve is 31, the retaining ring is 311, the external thread is 312, the notch is 313, the locking cavity is 314, the through hole is 315, the first groove is 316, the first bump is 317, the connecting rod is 32, the second groove is 321, the first locking block is 322, the locking nut is 33, the locking mechanism is 34, the body is 341, the dovetail sliding groove is 3411, the block is 3412, the third groove is 3413, the pressing plate is 342, the second locking block is 343, the elastic piece is 344, the second bump is 345, the spring is 346, the baffle plate is 347, the diagonal brace code is 4, the stiffening rib plate is 5, the top of the prefabricated component is 6, the bottom of the prefabricated component is 7, and the lug is 8.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 16, the present invention provides a detachable support frame for hoisting a large-span prefabricated member and a manufacturing method thereof, including: girder steel 1, steel sheet 2, a plurality of flexible bracing 3, a plurality of bracing sign indicating number 4, stiffening rib plate 5, girder steel 1 relative both sides face all weld with 1 top surface of girder steel is parallel steel sheet 2, perpendicular girder steel 1 with the welding seam department welding of steel sheet 2 stiffening rib plate 5, the welding has on the girder steel 1 bracing sign indicating number 4, the one end of flexible bracing 3 with bracing sign indicating number 4 is connected.
The working principle of the technical scheme is as follows: with steel sheet 2 welding in the both sides of girder steel 1, steel sheet 2 is used for passing through bolted connection with girder steel 1 and building prefabricated component, and stiffening rib plate 5 is gone up in the welding seam department welding of perpendicular girder steel 1 and steel sheet 2, and the welding has bracing sign indicating number 4 on the girder steel 1, passes through bolted connection with the tip of flexible bracing 3 and bracing sign indicating number 4 again, and the length of flexible bracing 3 can freely be adjusted.
The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, steel sheet 2 is used for passing through bolted connection with girder steel 1 and building prefabricated component, convenient and repeatedly usable is dismantled in the installation, the 5 intensity of multiplicable steel sheet 2 of stiffening rib board and 1 welding department of girder steel, the reduction damages, a plurality of bracing sign indicating number 4 that are equipped with on the girder steel 1 are used for connecting a plurality of flexible bracing 3, a plurality of flexible bracing 3 play the supporting role, increase the rigidity of support frame, prevent that building prefabricated component atress is inhomogeneous when the hoist and lead to warping or the fracture.
In one embodiment, the steel beam 1 is a cold-rolled steel tube, and the steel beam 1 includes: the top beam 11 and the bottom beam 12 are connected through the telescopic inclined struts 3 and the inclined strut codes 4, the inclined strut codes 4 are welded on the bottom surface of the top beam 11 and the top surface of the bottom beam 12, and two ends of the telescopic inclined strut 3 are respectively connected with the inclined strut codes 4 on the top beam 11 and the inclined strut codes 4 on the bottom beam 12 through bolts; the top surface of the top beam 11 is flush with the top surface of the steel plate 2 connected with the top beam, and the bottom surface of the bottom beam 12 is flush with the bottom surface of the steel plate 2 connected with the bottom beam.
The working principle of the technical scheme is as follows: girder steel 1 adopts the cold-formed steel pipe, girder steel 1's cross-section can come the nimble selection according to building prefabricated component's span and size, the both sides face welding of back timber 11 has the steel sheet 2 that equals with back timber 11 length, guarantee the top surface of steel sheet 2 and the top surface parallel and level of back timber 11, the both sides face welding of floorbar 12 has the steel sheet 2 that equals with floorbar 12 length, guarantee the bottom surface parallel and level of steel sheet 2 and the bottom surface of floorbar 12, the bottom surface welding of back timber 11 has a plurality of bracing yards 4, the top surface welding of floorbar 12 has a plurality of bracing yards 4, flexible bracing 3 is used for connecting bracing yard 4 on the back timber 11 and the bracing yard 4 on the floorbar 12, and then with back timber 11 with floorbar 12 connects as an organic wholely.
The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, when welding steel sheet 2 on back timber 11 and floorbar 12, guarantee the top surface parallel and level of steel sheet 2 and back timber 11, the bottom surface parallel and level of steel sheet 2 and floorbar 12, conveniently install back timber 11 and floorbar 12 on the prefabricated component of building through steel sheet 2, make the prefabricated component of building atress even when hoist and mount, and set up a plurality of flexible bracing 3 that are used for connecting between them between back timber 11 and floorbar 12, further play the supporting role to back timber 11 and floorbar 12, guarantee that the prefabricated component of building is non-deformable when lifting by crane.
In one embodiment, the length of the steel plate 2 is equal to that of the steel beam 1, a plurality of openings are formed in the steel plate 2, and the stiffening rib plates 5 are welded at positions 50mm away from the openings.
The working principle of the technical scheme is as follows: choose length for use 2 steel sheets and the welding of girder steel 1 equal together with girder steel 1 to a plurality of trompils that are equipped with on the steel sheet 2 are used for passing through bolted connection with the building prefabricated component, the setting of pitch-row is under the intensity circumstances of guaranteeing steel sheet 2, guarantee steel sheet 2 and building prefabricated component firm in connection, the welding has stiffening rib plate 5 on the position apart from trompil 50mm, steel sheet 2 and girder steel 1 are being connected to stiffening rib plate 5, play the fixed effect of strengthening to the welding department of girder steel 1 and steel sheet 2.
The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, the trompil that is equipped with on the steel sheet 2 makes things convenient for girder steel 1 to be connected with the building prefabricated component through steel sheet 2, and a plurality of trompils make steel sheet 2 more firm through bolted connection with the building prefabricated component, and stiffening rib plate 5 has prevented girder steel 1 and steel sheet 2 atress deformation, increases joint strength between them.
In one embodiment, the top surface of the top beam 11 is connected with a prefabricated part top 6, the bottom surface of the bottom beam 12 is connected with a prefabricated part bottom 7, a plurality of wire lugs 8 are pre-embedded on the prefabricated part top 6 and the prefabricated part bottom 7, the wire lugs 8 correspond to the openings, and the prefabricated part top 6 and the prefabricated part bottom 7 are respectively connected with the steel plate 2 through bolts.
The working principle of the technical scheme is as follows: the building prefabricated part comprises a prefabricated part top 6 and a prefabricated part bottom 7, the top surface of the top beam 11 is connected with the prefabricated part top 6, the bottom surface of the bottom beam 12 is connected with the prefabricated part bottom 7, a plurality of wire lugs 8 are pre-embedded in the prefabricated part top 6 and the prefabricated part bottom 7, the wire lugs 8 are nuts, the wire lugs 8 correspond to holes formed in the steel plate 2, bolts penetrate through the holes formed in the steel plate 2 to be in threaded connection with the wire lugs 8, the steel plate 2 is fixed on the prefabricated part top 6 or the prefabricated part bottom 7, the top beam 11 is fixed on the prefabricated part top 6, and the bottom beam 12 is fixed on the prefabricated part bottom 7.
The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, through setting up the trompil on steel sheet 2, set up on prefabricated component top 6 and prefabricated component bottom 7 with the corresponding lug 8 of trompil, the rethread bolt is connected steel sheet 2 with prefabricated component top 6 and prefabricated component bottom 7 respectively, and then make back timber 11 and floorbar 12 respectively with prefabricated component top 6 and prefabricated component bottom 7 firm in connection, difficult pine takes off when guaranteeing to lift by crane, and adopt convenient the dismantlement of bolted connection, back timber 11 and floorbar 12 can used repeatedly.
In one embodiment, the telescopic sprags 3 comprise: threaded sleeve 31, connecting rod 32, lock nut 33, locking mechanism 34, equal activity is equipped with in the upper and lower both ends of threaded sleeve 31 connecting rod 32, two the end that stretches out of connecting rod 32 all with bracing sign indicating number 4 passes through bolted connection, all be equipped with in the upper and lower both ends of threaded sleeve 31 locking mechanism 34, one side of locking mechanism 34 is stretched out the lateral wall setting of threaded sleeve 31, lock nut 33 cover is established the outside of threaded sleeve 31, lock nut 33 inwards compresses locking mechanism 34, locking mechanism 34 will threaded sleeve 31 with connecting rod 32 locks.
The working principle of the technical scheme is as follows: the brace 4 arranged on the top beam 11 is connected with one end of a connecting rod 32 through a bolt, and the other end of the connecting rod 32 is inserted into the upper end of the threaded sleeve 31 and locked in the threaded sleeve 31 through a locking nut 33 and a locking mechanism 34; one end of another connecting rod 32 is inserted into the lower end of the threaded sleeve 31, one end of the connecting rod 32 inserted into the threaded sleeve 31 is also locked in the threaded sleeve 31 through a locking nut 33 and a locking mechanism 34, and the other end of the connecting rod 32 is connected with the inclined strut 4 arranged on the bottom beam 12 through a bolt; when the length of the telescopic inclined strut 3 is adjusted, the locking nut 33 on the threaded sleeve 31 is rotated towards the direction far away from the inclined strut code 4, so that the locking nut 33 is not compressing the locking mechanism 34, at the moment, the locking mechanism 34 is separated from the connecting rod 32 to be locked, the connecting rod 32 can move along the axial direction of the threaded sleeve, after the length is adjusted, the locking nut 33 is rotated towards the direction close to the inclined strut code 4, so that the locking nut 33 compresses the locking mechanism 34, the locking mechanism 34 is locked with the connecting rod 32, at the moment, the connecting rod 32 and the threaded sleeve 31 do not generate relative movement, and the connecting rod 32 and the threaded sleeve 31 are in locking connection.
The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, only through the lock nut 33 on the rotatory threaded sleeve 31 of external force, alright realize that locking mechanism 34 locks connecting rod 32 or removes locking connecting rod 32, this moment adjust the connecting rod 32 stretch out the threaded sleeve 31 the length that the telescopic diagonal brace 3 was adjusted to the length can, it is convenient to adjust, easily the operation.
In one embodiment, stop rings 311 are fixedly connected to both ends of the threaded sleeve 31, an external thread 312 is arranged on the outer side of the threaded sleeve 31, notches 313 are formed in outer circular surfaces of both ends of the threaded sleeve 31, a locking cavity 314 is formed in the notches 313, a through hole 315 is formed in an axis of the threaded sleeve 31, the locking cavity 314 is communicated with the through hole 315, first grooves 316 are formed in both end surfaces of the locking cavity 314 in the length direction, the first grooves 316 extend to the outer side of the threaded sleeve 31 in the radial direction of the threaded sleeve 31, six first protruding blocks 317 are arranged on both end surfaces of the locking cavity 314 in the width direction, the six first protruding blocks 317 are distributed in two rows correspondingly, and the six first protruding blocks 317 are distributed at equal intervals from top to bottom and from left to right;
the locking mechanism 34 is arranged in the locking cavity 314, one side of the locking mechanism 34 protrudes out of the notch 313, a second groove 321 is arranged on the outer circumferential surface of the connecting rod 32, a plurality of first locking blocks 322 which are distributed at equal intervals are arranged on the bottom surface of the second groove 321, and the first locking blocks 322 are matched and locked with the locking mechanism 34.
The working principle of the technical scheme is as follows: the retaining rings 311 arranged at two ends of the threaded sleeve 31 are used for retaining the locking nut 33, the length of the locking nut 33 is larger than one-half of the length of the notch 313, the depth of the notch 313 is equal to that of the external thread 312, the notch 313 is provided with a locking cavity 314, a locking mechanism 34 is arranged in the locking cavity 314, one side of the locking mechanism 34 protrudes out of the notch 313, when the locking nut 33 is rotated, the protruding side of the locking mechanism 34 is compressed towards the locking cavity 314 by the locking nut 33, the other side, opposite to the locking mechanism 34, of the locking mechanism is clamped with the connecting rod 32 inserted in the through hole 315 of the threaded sleeve 31, two end faces in the length direction of the locking cavity 314 are respectively provided with a first groove 316, the first grooves 316 are used for enabling the locking mechanism 34 to slide along the radial direction of the threaded sleeve 31, and two end faces in the width direction of the locking cavity 314 are respectively provided with six first protruding blocks 317 for limiting the displacement of the locking mechanism 34, the first locking block 322 is provided on the connecting rod 32 for locking with the locking mechanism 34.
The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, retaining ring 311 can be when lock nut 33 locks, prevent that lock nut 33 from becoming flexible and the slippage, the setting of incision 313 can make the internal thread of lock nut 33 better with the outstanding one side butt of incision 313 of locking mechanism 34, it is more firm to make both locks, first recess 316 can be when lock nut 33 compresses locking mechanism 34, make locking mechanism 34 elastically slide in first recess 316, six first lugs 317 can restrict the displacement of locking mechanism 34 when locking mechanism 34 is locked, and then guarantee that locking mechanism 34 is in quiescent condition relative to threaded sleeve 31, further guarantee threaded sleeve 31 and connecting rod 32 firm in connection.
In one embodiment, the locking mechanism 34 includes: the locking device comprises a body 341, a pressure plate 342 and a plurality of second locking blocks 343, wherein the pressure plate 342 is arranged on one side of the body 341, two ends of the pressure plate 342 protrude out of the body 341, a dovetail-shaped sliding groove 3411 is arranged on the other side of the body 341 opposite to the pressure plate 342, a stop 3412 corresponding to the second locking block 343 is arranged at one end of the dovetail-shaped sliding groove 3411 close to the retainer ring 311, one end of the second locking block 343 is slidably connected in the dovetail-shaped sliding groove 3411, and the end of the second locking block 343 connected with the dovetail-shaped sliding groove 3411 is dovetail-shaped; an elastic piece 344 is arranged between the stopper 3412 and the second locking block 343 adjacent to the stopper 3412, the elastic piece 344 is also arranged between two adjacent second locking blocks 343, and the plurality of second locking blocks 343 are matched with the plurality of first locking blocks 322; third grooves 3413 are formed in two opposite side surfaces of the body 341, and six second protrusions 345 matched with the six first protrusions 317 are formed in the third grooves 3413; a spring 346 is connected to each of two ends of the pressing plate 342 near one surface of the connecting rod 32, a baffle 347 is connected to the other end of the spring 346, and the baffle 347 is slidably connected to the first groove 316.
The working principle of the technical scheme is as follows: a pressing plate 342 arranged on one side of the body 341 protrudes out of the notch 313, the protruding surface of the pressing plate 342 is an arc-shaped surface, a dovetail-shaped sliding groove 3411 is arranged on the other side of the body 341 opposite to the pressing plate 342, a plurality of second locking blocks 343 are connected in the dovetail-shaped sliding groove 3411 in a sliding manner, elastic pieces 344 are arranged between the stopper 3412 and the adjacent second locking block 343 and between the adjacent two second locking blocks 343, the second locking blocks 343 are matched and clamped with the first locking blocks 322, and the stopper 3412 and the second locking blocks 343 can be inserted between the adjacent two first locking blocks 322; when the telescopic inclined strut 3 is shortest, the plurality of second locking blocks 343 are all located on the same side of the first locking block 322, which is arranged on the second groove 321 of the connecting rod 32 and is close to the end of the inclined strut code 4, at this time, the connecting rod 32 is pulled towards the side close to the inclined strut code 4 by external force, at this time, the plurality of second locking blocks 343 are close to each other under the action of the elastic piece 344, so that the extending length of the connecting rod 32 can be finely adjusted, and when the building prefabricated component is lifted up in this state, slight relative elastic sliding can be generated between the connecting rod 32 and the threaded sleeve 31 under the action of the elastic piece 344, and a certain shock absorption effect can be achieved during lifting up; the second locking block 343 may also be configured to be fixedly connected to the body 341, that is, the other side of the body 341 opposite to the pressing plate 342 is fixedly connected to a plurality of second locking blocks 343 arranged at equal intervals, and the second locking blocks 343 are matched with the plurality of first locking blocks 322 arranged at equal intervals; six second protrusions 345 are fixedly arranged in a third groove 3413 formed in the body 341, the second protrusions 345 are matched with the first protrusions 317, when the locking mechanism 34 is in an unlocked state, the second protrusions 345 and the first protrusions 317 do not limit displacement with each other, after the locking mechanism 34 is locked by the locking nut 33, the plurality of second protrusions 345 and the plurality of first protrusions 317 penetrate through to limit displacement with each other, and therefore the locking mechanism 34 is firmly fixed in the threaded sleeve 31; the spring 346 is connected to one side of the two ends of the pressing plate 342 close to the connecting rod 32, the baffle 347 arranged at the other end of the spring 346 is slidably connected in the first groove 316 of the threaded sleeve 31, when the locking mechanism 34 is in an unlocked state, the spring 346 is in a natural stretching state, the arrangement of the protruding notch 313 of the pressing plate 342 is ensured, when the locking nut 33 is locked, the locking mechanism 34 is compressed inwards, the pressing plate 342 further compresses the spring 346 inwards, when the locking is released, under the elastic force of the spring 346, the locking mechanism 34 can return to the original position, and the length of the connecting rod 32 is convenient to adjust.
The beneficial effects of the above technical scheme are that: through the design of the structure, during locking, the threaded sleeve 31 and the second bump 345 of the locking mechanism 34 limit displacement mutually through the first bump 317, so that the locking mechanism 34 and the threaded sleeve 31 are ensured to be locked and fixed firmly, the locking mechanism 34 is clamped and connected mutually through the second locking block 343 and the first locking block 322 of the connecting rod 32, so that the mutual locking and fixing between the connecting rod 32 and the locking mechanism 34 are limited, so that the locking between the threaded sleeve 31 and the connecting rod 32 is ensured, the elastic piece 344 arranged on the locking mechanism 34 can realize the micro-adjustment of the length of the telescopic inclined strut 3 when the telescopic inclined strut 3 is at the shortest, the stability of the building prefabricated part during lifting is ensured, the elastic piece 344 can play a certain role in shock absorption, the situation that the building prefabricated part deforms due to vibration during lifting is further prevented, and the stability of the building prefabricated part is enhanced; and the length of the telescopic diagonal brace 3 is adjustable, so that the telescopic diagonal brace is suitable for different building prefabricated parts, can be repeatedly utilized and saves resources.
A manufacturing method of a detachable support frame for hoisting a large-span prefabricated part comprises any one of the detachable large-span temporary support frame and comprises the following steps:
step 1: manufacturing a building prefabricated part, and embedding a plurality of wire lugs 8 in the top 6 and the bottom 7 of the prefabricated part respectively;
step 2: a plurality of holes are formed in a steel plate 2 with the length equal to that of the steel beam 1, and the positions where the holes are formed are matched with the positions of the pre-buried lugs 8;
and step 3: welding the steel plates 2 on two opposite sides of the steel beam 1, wherein the steel beam 1 comprises a top beam 11 and a bottom beam 12, the top surface of the top beam 11 is flush with the top surface of the steel plate 2 welded with the top beam, and the bottom surface of the bottom beam 12 is flush with the bottom surface of the steel plate 2 welded with the bottom beam;
and 4, step 4: welding a stiffening rib plate 5 at a position 50mm away from the opening of the steel plate 2, wherein the stiffening rib plate 5 is vertical to the welding line of the steel plate 2 and the steel beam 1;
and 5: a plurality of diagonal bracing yards 4 are welded on the bottom surface of the top beam 11 and the top surface of the bottom beam 12;
step 6: the top beam 11 and the top of the prefabricated part 6, the bottom beam 12 and the bottom of the prefabricated part 7 are connected together through bolts and the wire lugs 8, and then the two ends of the telescopic inclined strut 3 are respectively connected with the inclined strut codes 4 on the top beam 11 and the inclined strut codes 4 on the bottom beam 12, so that the top beam 11 and the bottom beam 12 are connected into a whole.
The working principle of the technical scheme is as follows: firstly, when a building prefabricated part is manufactured, a plurality of lugs 8 for bolt connection are pre-embedded in the top 6 and the bottom 7 of the prefabricated part respectively, and the distance between the lugs 8 is determined according to actual conditions; then, a plurality of holes are formed in the steel plate 2 with the length equal to that of the steel beam 1, and the positions where the holes are formed are matched with the positions of the pre-buried lugs 8; secondly, welding the steel plates 2 on two opposite sides of the steel beam 1, wherein the steel beam 1 comprises a top beam 11 and a bottom beam 12, the top surface of the top beam 11 is flush with the top surface of the steel plate 2 welded with the top beam, and the bottom surface of the bottom beam 12 is flush with the bottom surface of the steel plate 2 welded with the bottom beam; welding a stiffening rib plate 5 at a position 50mm away from the opening of the steel plate 2, wherein the stiffening rib plate 5 is vertical to the welding line of the steel plate 2 and the steel beam 1; a plurality of diagonal bracing yards 4 are welded on the bottom surface of the top beam 11 and the top surface of the bottom beam 12; finally, the top beam 11 and the prefabricated part top 6, the bottom beam 12 and the prefabricated part bottom 7 are connected together through bolts and the wire lugs 8, namely the bolts penetrate through holes in the steel plate to be fixed with the wire lugs 8, the two ends of the telescopic inclined strut 3 are respectively connected with the inclined strut codes 4 on the top beam 11 and the inclined strut codes 4 on the bottom beam 12, the telescopic inclined strut 3 and the inclined strut codes 4 are connected through bolts, and the top beam 11 and the bottom beam 12 are connected into a whole.
The beneficial effects of the above technical scheme are that: can dismantle large-span support frame and compare in single bracing piece, its rigidity is bigger, and the wholeness is better, can reduce the deformation that produces when the building prefabricated component of large-span hoists better, has more the suitability to large-span building prefabricated component to adopt bolted connection mode, the installation is convenient with the dismantlement, repeatedly usable.
In one embodiment, the steel beam 1 is a rectangular section cold-bending steel pipe, and the section of the steel beam 1 can determine whether the steel beam meets the use standard through the maximum deformation amount generated by stress, and the specific steps are as follows:
step 1: calculating the bending moment of inertia of the section of the steel beam 1
：
Wherein the content of the first and second substances,
the width of the section of the steel beam 1,
is the height of the section of the steel beam 1,
the wall thickness of the steel beam 1;
step 2: calculating the maximum deflection generated when the steel beam 1 is stressed
：
Wherein the content of the first and second substances,
for the load to which the steel beam 1 is subjected in its height direction,
as a result of the length of the steel beam 1,
is the initial modulus of elasticity of the material of the steel beam 1,
the bending moment born by the section when the maximum stress on the section of the steel beam 1 reaches the yield stress,
is the strain hardening coefficient of the steel beam 1 material,
is a constant;
and step 3: calculating the maximum deformation of the steel beam 1:
wherein the content of the first and second substances,
and
is a constant, is a parameter related to the boundary condition when the steel beam 1 is forced to bend;
therefore, after the section of the steel beam 1 is selected, the maximum deformation of the steel beam 1 under stress is calculated, and the steel beam 1 is ensured not to exceed the maximum deformation in use.
The working principle and the beneficial effects of the technical scheme are as follows: the steel beam 1 is a rectangular section cold-bending steel pipe, the section can be flexibly selected according to the span and the size of a prefabricated member of a building, after the section of the steel beam 1 is selected, the maximum deformation amount generated when the steel beam 1 is stressed is calculated according to the formula, wherein the initial elastic modulus of the material selected by the steel beam 1 and the strain strengthening coefficient of the material are related to the material for manufacturing the steel beam 1, the material can go through an elastic stage, a yield stage and a strengthening stage in the deformation process, and finally breaks, the initial elastic modulus of the material can be calculated and measured in the elastic stage, the strain strengthening coefficient of the material can be calculated and measured in the strengthening stage, the value of the strain strengthening coefficient can be 1.1-1.25, and the parameter related to the boundary condition when the steel beam 1 is stressed and bent in the step 3 is obtained
And
constant, which is selected according to the condition of the steel beam 1 when stressed; the maximum deformation amount generated when the steel beam 1 is stressed is judged by fully considering the material performance of the steel beam 1 and the size of the section of the steel beam through the formula is more accurate, the deformation amount of the steel beam 1 in use is not more than the maximum deformation amount of the steel beam, the strength in use is ensured, the stability of the building prefabricated part in hoisting is further enhanced, the deformation and the breakage of the steel beam 1 in hoisting are prevented from causing the deformation of the building prefabricated part, and the stability of the building prefabricated part in hoisting is ensured.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (6)
1. The utility model provides a can dismantle support frame for hoist and mount of large-span prefab which characterized in that includes: the steel beam comprises a steel beam (1), a steel plate (2), a plurality of telescopic inclined struts (3), a plurality of inclined strut codes (4) and a stiffening rib plate (5), wherein the steel plate (2) parallel to the top surface of the steel beam (1) is welded on two opposite side surfaces of the steel beam (1), the stiffening rib plate (5) is welded at a welding seam vertical to the steel beam (1) and the steel plate (2), the inclined strut codes (4) are welded on the steel beam (1), and one ends of the telescopic inclined struts (3) are connected with the inclined strut codes (4);
the telescopic diagonal brace (3) comprises: the connecting rod (32) is movably arranged in the upper end and the lower end of the threaded sleeve (31), the extending ends of the two connecting rods (32) are connected with the inclined strut codes (4) through bolts, the locking mechanisms (34) are arranged in the upper end and the lower end of the threaded sleeve (31), one side of each locking mechanism (34) extends out of the outer side wall of the threaded sleeve (31), the locking nut (33) is sleeved on the outer side of the threaded sleeve (31), the locking nut (33) inwards compresses the locking mechanism (34), and the locking mechanism (34) locks the threaded sleeve (31) and the connecting rod (32);
two ends of the threaded sleeve (31) are fixedly connected with baffle rings (311), the outer side of the threaded sleeve (31) is provided with an external thread (312), the outer circular surfaces of the two ends of the threaded sleeve (31) are respectively provided with a notch (313), the notches (313) are provided with a locking cavity (314), a through hole (315) is arranged on the axis of the threaded sleeve (31), the locking cavity (314) is communicated with the through hole (315), two end faces of the locking cavity (314) in the length direction are respectively provided with a first groove (316), the first groove (316) extends to the outside of the threaded sleeve (31) in the radial direction of the threaded sleeve (31), six first convex blocks (317) are arranged on two end faces of the locking cavity (314) in the width direction, two rows of the six first convex blocks (317) are correspondingly distributed, and the six first convex blocks (317) are distributed at equal intervals from top to bottom and from left to right;
the locking mechanism (34) is arranged in the locking cavity (314), one side of the locking mechanism (34) protrudes out of the notch (313), a second groove (321) is formed in the outer circular surface of the connecting rod (32), a plurality of first locking blocks (322) distributed at equal intervals are arranged on the bottom surface of the second groove (321), and the first locking blocks (322) are matched and locked with the locking mechanism (34);
the locking mechanism (34) comprises: the locking device comprises a body (341), a pressing plate (342) and a plurality of second locking blocks (343), wherein the pressing plate (342) is arranged on one side of the body (341), two ends of the pressing plate (342) protrude out of the body (341), a dovetail-shaped sliding groove (3411) is formed in the other side, opposite to the pressing plate (342), of the body (341), a stop block (3412) corresponding to the second locking block (343) is arranged at one end, close to the stop ring (311), of the dovetail-shaped sliding groove (3411), one end of the second locking block (343) is connected in the dovetail-shaped sliding groove (3411) in a sliding mode, and the end, connected with the dovetail-shaped sliding groove (3411), of the second locking block (343) is in a dovetail shape; an elastic part (344) is arranged between the stop block (3412) and the second locking block (343) adjacent to the stop block, the elastic part (344) is also arranged between two adjacent second locking blocks (343), and the second locking blocks (343) are matched with the first locking blocks (322); third grooves (3413) are formed in two opposite side faces of the body (341), and six second lugs (345) matched with the six first lugs (317) are arranged in the third grooves (3413); one surface of each end, close to the connecting rod (32), of the pressing plate (342) is connected with a spring (346), the other end of each spring (346) is connected with a baffle (347), and the baffles (347) are slidably connected in the first grooves (316).
2. The detachable support frame for hoisting of large-span prefabricated members according to claim 1, wherein the steel beam (1) is a cold-formed steel pipe, and the steel beam (1) comprises: the top beam (11) and the bottom beam (12) are connected with the inclined strut codes (4) through the telescopic inclined struts (3), the inclined strut codes (4) are welded on the bottom surface of the top beam (11) and the top surface of the bottom beam (12), and two ends of the telescopic inclined strut (3) are respectively connected with the inclined strut codes (4) on the top beam (11) and the inclined strut codes (4) on the bottom beam (12) through bolts; the top surface of roof beam (11) with be connected with it the top surface parallel and level of steel sheet (2), the bottom surface of floorbar (12) with be connected with it the bottom surface parallel and level of steel sheet (2).
3. The detachable support frame for hoisting of large-span prefabricated members according to claim 2, wherein the length of the steel plate (2) is equal to that of the steel beam (1), a plurality of holes are formed in the steel plate (2), and the stiffening rib plates (5) are welded at positions 50mm away from the holes.
4. The detachable support frame for hoisting a large-span prefabricated member according to claim 3, wherein the top surface of the top beam (11) is connected with the top part (6) of the prefabricated member, the bottom surface of the bottom beam (12) is connected with the bottom part (7) of the prefabricated member, a plurality of wire lugs (8) are embedded in the top part (6) of the prefabricated member and the bottom part (7) of the prefabricated member, the wire lugs (8) correspond to the openings, and the top part (6) of the prefabricated member and the bottom part (7) of the prefabricated member are respectively connected with the steel plate (2) through bolts.
5. The manufacturing method of the detachable support frame for hoisting the large-span prefabricated part according to the claim 4, is characterized by comprising the following steps:
step 1: manufacturing a building prefabricated part, and embedding a plurality of wire lugs (8) in the top (6) and the bottom (7) of the prefabricated part respectively;
step 2: a plurality of holes are formed in a steel plate (2) which is as long as the steel beam (1), and the positions where the holes are formed are matched with the positions of a plurality of embedded lugs (8);
and step 3: welding the steel plates (2) on two opposite sides of the steel beam (1), wherein the steel beam (1) comprises a top beam (11) and a bottom beam (12), the top surface of the top beam (11) is flush with the top surface of the steel plate (2) welded with the top beam, and the bottom surface of the bottom beam (12) is flush with the bottom surface of the steel plate (2) welded with the bottom beam;
and 4, step 4: welding a stiffening rib plate (5) at a position 50mm away from the opening of the steel plate (2), wherein the stiffening rib plate (5) is vertical to a welding seam of the steel plate (2) and the steel beam (1);
and 5: welding a plurality of diagonal bracing codes (4) on the bottom surface of the top beam (11) and the top surface of the bottom beam (12);
step 6: the top beam (11) is connected with the top of the prefabricated part (6), the bottom beam (12) is connected with the bottom of the prefabricated part (7) through bolts and wire lugs (8), and then the two ends of the telescopic inclined strut (3) are respectively connected with the inclined strut code (4) on the top beam (11) and the inclined strut code (4) on the bottom beam (12), so that the top beam (11) and the bottom beam (12) are connected into a whole.
6. The manufacturing method of the detachable support frame for hoisting the large-span prefabricated member according to the claim 5 is characterized in that the steel beam (1) is a cold-bent steel pipe with a rectangular section, and the section of the steel beam (1) can be determined whether to meet the use standard according to the maximum deformation amount generated by the stress of the steel beam, and the method comprises the following specific steps:
step 1: calculating the bending moment of inertia of the section of the steel beam (1)
：
Wherein the content of the first and second substances,
the cross-sectional width of the steel beam (1),
is the section height of the steel beam (1),
the wall thickness of the steel beam (1);
step 2: calculating the force generated when the steel beam (1) is stressedMaximum deflection of
：
Wherein the content of the first and second substances,
the steel beam (1) is subjected to load in the height direction,
the length of the steel beam (1),
is the initial elastic modulus of the steel beam (1) material,
the bending moment born by the section when the maximum stress on the section of the steel beam (1) reaches the yield stress,
the strain strengthening coefficient of the steel beam (1) material,
is a constant;
and step 3: calculating the maximum deformation of the steel beam (1):
wherein the content of the first and second substances,
and
is a constant and is a parameter related to the boundary condition of the steel beam (1) when being stressed and bent;
therefore, after the section of the steel beam (1) is selected, the maximum deformation amount of the steel beam (1) under stress is calculated, and the steel beam (1) is ensured not to exceed the maximum deformation amount when in use.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004016149U1 (en) * | 2004-10-19 | 2005-01-13 | Zapf Gmbh | Universal hoist for changing batteries in electric trucks has an adjustable length hoist bar between the battery and the main hoist |
| CN109132839A (en) * | 2018-10-31 | 2019-01-04 | 科能源科技（天津）有限公司 | The boom hoisting of building block unit |
| CN109422195A (en) * | 2017-08-31 | 2019-03-05 | 上海宝冶集团有限公司 | Lifting gear and its application method for hoisting prefabricated component |
| CN109775551A (en) * | 2019-03-21 | 2019-05-21 | 广东省水利水电第三工程局有限公司 | A kind of Lift-on/Lift-off System and its construction method for Bailey bridge whole Transporting |
| CN210103312U (en) * | 2019-06-28 | 2020-02-21 | 广东建星建造集团有限公司 | Adjustable balance hanger |
| CN210735960U (en) * | 2019-08-30 | 2020-06-12 | 宋彬彬 | Concrete prefabricated component roof beam hoist and mount protector |
| CN210825123U (en) * | 2019-09-27 | 2020-06-23 | 浙江省工业设备安装集团有限公司 | Hoisting lug assembly for cold box plate of fractionating tower |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111877755A (en) * | 2020-08-13 | 2020-11-03 | 怀化市城市建设投资有限公司 | Angle formwork supporting device and method during secondary concrete pouring at intersection of precast beam and precast slab |
-
2020
- 2020-11-27 CN CN202011367445.5A patent/CN112482789B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004016149U1 (en) * | 2004-10-19 | 2005-01-13 | Zapf Gmbh | Universal hoist for changing batteries in electric trucks has an adjustable length hoist bar between the battery and the main hoist |
| CN109422195A (en) * | 2017-08-31 | 2019-03-05 | 上海宝冶集团有限公司 | Lifting gear and its application method for hoisting prefabricated component |
| CN109132839A (en) * | 2018-10-31 | 2019-01-04 | 科能源科技（天津）有限公司 | The boom hoisting of building block unit |
| CN109775551A (en) * | 2019-03-21 | 2019-05-21 | 广东省水利水电第三工程局有限公司 | A kind of Lift-on/Lift-off System and its construction method for Bailey bridge whole Transporting |
| CN210103312U (en) * | 2019-06-28 | 2020-02-21 | 广东建星建造集团有限公司 | Adjustable balance hanger |
| CN210735960U (en) * | 2019-08-30 | 2020-06-12 | 宋彬彬 | Concrete prefabricated component roof beam hoist and mount protector |
| CN210825123U (en) * | 2019-09-27 | 2020-06-23 | 浙江省工业设备安装集团有限公司 | Hoisting lug assembly for cold box plate of fractionating tower |
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