CN217947344U

CN217947344U - Prefabricated component lifting device

Info

Publication number: CN217947344U
Application number: CN202221957707.8U
Authority: CN
Inventors: 孟轲; 韦应彬; 刘智彬
Original assignee: China Construction Second Engineering Bureau Co Ltd
Current assignee: China Construction Second Engineering Bureau Co Ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-12-02
Anticipated expiration: 2032-07-27

Abstract

The utility model discloses a building hoisting tool, in particular to a prefabricated part hoisting tool, which comprises a frame and a hoisting assembly, wherein the frame comprises two longitudinal beams which are arranged in parallel and a plurality of cross beams which are arranged in parallel and are used for connecting the two longitudinal beams, and the cross beams are of telescopic structures; the hoisting assembly is fixed below the longitudinal beam and comprises a lifting lug, a steel wire rope and a pulley mechanism, two ends of the steel wire rope are fixed on the lifting lug, the pulley mechanism comprises a support, a pulley and a locking device, the pulley is rotatably arranged on the support, the locking device is arranged on the support, the middle of the steel wire rope penetrates through the pulley, and the steel wire rope and the pulley are locked on the support through the locking device. The utility model discloses utilize telescopic crossbeam adjustment lifting device's width, utilize the pulley mechanism control to lift by crane the relative position of wire rope length adjustment hoisting point, make the atress of hoisting point at reasonable within range.

Description

Prefabricated component lifting device

Technical Field

The utility model relates to a building lifting device field especially relates to a prefabricated component lifting device.

Background

At present, building industrialization is widely popularized all over the country, and assembly type buildings are the mainstream of building industry development. The main components of the fabricated building are precast concrete members, and in the hoisting process of precast concrete members such as precast members, the stable balance of the hoisting process is directly influenced by the stress positions of hoisting points of the precast concrete members.

When the span of the prefabricated part is large, if the stress point of the lifting point deviates from the gravity center of the prefabricated part, the load equally distributed by some lifting points is large and the lifting points are damaged; when the lifting point is close to the gravity center of the prefabricated part, the hogging moment value at the lifting point is overlarge, and concrete near the lifting point is easy to crack and peel; when the hoisting point of the prefabricated part is too close to the edge of the prefabricated part, the positive bending moment value in the span of the prefabricated part is large, so that the concrete near the span of the prefabricated part is easy to crack, and potential safety quality hazards appear.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the utility model provides a prefabricated part lifting device to solve among the prior art prefabricated part hoist and mount point uneven problem of atress.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a prefabricated part hoisting tool comprises a frame and a hoisting assembly, wherein the frame comprises two longitudinal beams which are arranged in parallel and a plurality of cross beams which are connected with the two longitudinal beams and arranged in parallel, and the cross beams are of telescopic structures; the hoisting assembly is fixed below the longitudinal beam and comprises lifting lugs, a steel wire rope and a pulley mechanism, the lifting lugs are arranged at two ends of the longitudinal beam, two ends of the steel wire rope are fixed on the lifting lugs, the pulley mechanism comprises a support, a pulley and a locking device, the support is fixedly arranged at the middle position of the longitudinal beam, the pulley is rotatably arranged on the support, the locking device is arranged on the support, the middle of the steel wire rope penetrates through the pulley, and the steel wire rope and the pulley are locked on the support through the locking device.

Further, the crossbeam comprises a first crossbeam section and a second crossbeam section, and the first crossbeam section and the second crossbeam section are in socket joint connection.

Further, the cross sections of the first beam section and the second beam section are square holes.

Further, the aperture of the first beam section is larger than the aperture of the second beam section, and the second beam section is inserted into the first beam section.

Furthermore, the first beam section and the second beam section are respectively provided with at least two connecting holes which are sequentially arranged along the length of the first beam section and the second beam section.

Furthermore, the distance between two adjacent connecting holes is 100-1000mm.

Further, the locking device is a clamping block or a fastener.

The utility model discloses a prefabricated component lifting device compares with prior art, and its beneficial effect lies in: the beam of the prefabricated part hoisting tool adopts a telescopic structure, and can be adjusted according to hoisted prefabricated parts with different sizes to ensure that hoisting points are at reasonable stress points; the middle part of the steel wire rope penetrates through the pulley, two lifting points which are a first lifting point and a second lifting point are respectively formed on two sides of the pulley, when the difference between the gravity center and the centroid position of the lifted prefabricated part is large, the locking device is loosened, the steel wire rope on one side with the higher lifting point position (set as the first lifting point) is lengthened to a proper length, and the locking device is locked, so that the first lifting point is lowered; at this time, the length of the wire rope with the lower hoisting point on the other side (set as the second hoisting point) is shortened, the second hoisting point is lifted, and the stress condition of each hoisting point can be improved.

Drawings

Fig. 1 is a schematic view of the structural assembly of a hoisting tool for prefabricated parts (not shown in a steel wire rope and a pulley mechanism) according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a cross beam according to an embodiment of the present invention;

fig. 3 is a schematic view of a connection structure of a longitudinal beam and a pulley mechanism according to an embodiment of the present invention;

in the figure, 100, a hoisting tool; 10. a frame; 20. hoisting the assembly; 11. a stringer; 12. a cross beam; 121. a first beam section; 122. a second beam section; 123. connecting holes; 21. lifting lugs; 211. a first lifting lug; 212. a second lifting lug; 23. a pulley mechanism; 232. a locking device; 231. a pulley; 22. a wire rope; 241. a first hoisting point; 242. and a second hoisting point.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1, 2 and 3, a prefabricated part lifting tool 100 according to a preferred embodiment of the present invention includes a frame 10 and a lifting assembly 20. The frame 10 comprises two longitudinal beams 11 arranged in parallel and a plurality of parallel cross beams 12 connecting the two longitudinal beams 11, the cross beams 12 are of a telescopic structure, the hoisting assembly 20 is fixed below the longitudinal beams 11, the hoisting assembly 20 comprises lifting lugs 21, steel wire ropes 22 and pulley mechanisms 23, the lifting lugs 21 are arranged at two ends of the longitudinal beams 11, two ends of each steel wire rope 22 are fixed on the lifting lugs 21, each pulley mechanism 23 comprises a support (not shown in the figure), a pulley 231 and a locking device 232, the supports are fixed in the middle of the longitudinal beams 11, the pulleys 231 are rotatably arranged on the supports, the locking devices 232 are arranged on the supports, the middle parts of the steel wire ropes 22 penetrate through the pulleys 231, the steel wire ropes 22 and the pulleys 231 are locked on the supports through the locking devices 232, the locking devices 232 are loosened, the steel wire ropes 22 on one sides of the pulleys 231 are elongated, the lengths of the hoisting steel wire ropes 22 on the other sides of the pulleys 231 are shortened, the relative positions of hoisting points can be adjusted, and the stress of the hoisting points is within a reasonable range. Based on this, in the prefabricated part hoisting tool 100 of the embodiment, the beam 12 adopts a telescopic structure, and can be adjusted according to the hoisted prefabricated parts with different sizes to ensure that the hoisting point is at a reasonable stress point; the middle part of the steel wire rope 22 passes through the pulley 231, two hanging points, namely a first hanging point 241 and a second hanging point 242, can be formed on two sides of the pulley 231, when the difference between the center of gravity and the centroid distance of the prefabricated part to be hung is large, the locking device 232 is loosened, the steel wire rope 22 on the side with the higher hanging point position (set as the first hanging point 241) is lengthened to a proper length, and the locking device 232 is locked, so that the first hanging point 241 is lowered; at this time, the length of the wire rope 22 at the other suspension point position (set as the second suspension point 242) is shortened, and the second suspension point 242 is raised, so that the stress on each suspension point can be improved.

Further, the locking device 232 is a clamping block or a fastener, the clamping block has a certain weight, one end of the clamping block is hinged with the bracket in a damping mode, and the other end of the clamping block can be clamped on the steel wire rope 22 and the pulley 231; one end of the fastener is hinged with the bracket, and the other end of the fastener can be pressed on the upper edges of the steel wire rope 22 and the pulley 231 and buckled on the bracket. It should be noted that the locking device 232 of the present embodiment may also be other locking devices 232 with a locking function.

Further, in order to realize the telescopic structure of the beam 12, the beam 12 includes a first beam section 121 and a second beam section 122, the cross section of the first beam section 121 and the cross section of the second beam section 122 are square holes, and the square holes are used for preventing the first beam section 121 and the second beam section 122 from relatively rotating along the cross section direction. The first beam section 121 and the second beam section 122 are socket connected, and the aperture of the first beam section 121 is larger than the aperture of the second beam section 122, so that the second beam section 122 is socket inside the first beam section 121. The width of the beam 12 can be adjusted only by at least two connecting holes 123, so that at least two connecting holes 123 sequentially arranged along the length of each of the first beam section 121 and the second beam section 122 are respectively arranged on each of the first beam section 121 and the second beam section 122, the distance between every two adjacent connecting holes 123 is 100-1000mm, preferably 300, 400 or 500mm, and the connecting holes 123 are mainly used for fixing the relative positions of the first beam section 121 and the second beam section 122 and preventing the first beam section 121 and the second beam section 122 from sliding relatively along the length direction in the hoisting process.

The utility model discloses a working process does: as shown in fig. 1, 2 and 3, the first and

second beam sections

121 and 122 are relatively socket-connected, and after the socket depth is determined, bolts are sequentially inserted through the connection holes 123 of the first and

second beam sections

121 and 122, and the length of the beam 12 is fixed by screwing the bolts. First lifting lugs 211 are arranged above two ends of the longitudinal beam 11, and the hoisting device can be connected with the hoisting tool 100 through the first lifting lugs 211; second lifting lugs 212 are arranged below two ends of the longitudinal beam 11, a pulley mechanism 23 is arranged below the center of the longitudinal beam 11, the steel wire rope 22 is fixed on the second lifting lugs 212, the middle part of the steel wire rope 22 penetrates through the second lifting lugs 212 fixed on the pulleys 231, during hoisting, the locking device 232 is loosened, the working length of the steel wire rope 22 at two ends of the pulleys 231 is adjusted by pulling the steel wire rope 22, the hoisting point of the hoisted prefabricated part is in a position with reasonable stress, and then the locking device 232 is locked to perform hoisting operation.

To sum up, the embodiment of the utility model provides a prefabricated component lifting device 100, it utilizes the slip socket joint of first crossbeam section 121 and second crossbeam section 122 is connected for the position of hoist and mount point can be adjusted in order to adapt to the size of hoist and mount prefabricated component, utilizes wire rope 22 middle part to pass pulley 231, during hoist and mount, loosens locking device 232, locks locking device 232 through pulling wire rope 22 and adjusts the working length of pulley 231 both ends wire rope 22 afterwards, makes the hoisting point of the prefabricated component of hoist and mount be located reasonable stress position.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A prefabricated part hoisting tool is characterized by comprising a frame and a hoisting assembly, wherein the frame comprises two longitudinal beams which are arranged in parallel and a plurality of cross beams which are arranged in parallel and are connected with the two longitudinal beams, and the cross beams are of telescopic structures; the hoisting assembly is fixed below the longitudinal beam and comprises lifting lugs, a steel wire rope and a pulley mechanism, the lifting lugs are arranged at two ends of the longitudinal beam, two ends of the steel wire rope are fixed on the lifting lugs, the pulley mechanism comprises a support, a pulley and a locking device, the support is fixedly arranged at the middle position of the longitudinal beam, the pulley is rotatably arranged on the support, the locking device is arranged on the support, the middle of the steel wire rope penetrates through the pulley, and the steel wire rope and the pulley are locked on the support through the locking device.

2. The precast element hoist tool of claim 1, characterized in that the beam includes a first beam section and a second beam section, the first beam section and the second beam section being socket-connected.

3. The precast element lifting tool of claim 2, wherein the first and second beam sections are square holes in cross section.

4. The precast element hoist tool of claim 3, characterized in that the aperture of the first beam section is larger than the aperture of the second beam section, which is received in the first beam section.

5. The prefabricated component hoisting tool of claim 4, wherein the first and second beam sections are each provided with at least two connecting holes arranged in sequence along the length thereof.

6. The prefabricated part hoisting tool of claim 5, wherein the distance between two adjacent connecting holes is 100-1000mm.

7. The prefabricated component lifting tool of any one of claims 1 to 6, wherein the locking device is a clamp block or a fastener.