CN111661746B

CN111661746B - Lifting appliance

Info

Publication number: CN111661746B
Application number: CN201910172514.8A
Authority: CN
Inventors: 方晶; 张竹; 朱浩; 程伟
Original assignee: Jiangsu Goldwind Science and Technology Co Ltd
Current assignee: Jiangsu Goldwind Science and Technology Co Ltd
Priority date: 2019-03-07
Filing date: 2019-03-07
Publication date: 2023-03-24
Anticipated expiration: 2039-03-07
Also published as: CN111661746A

Abstract

The invention provides a lifting appliance, which is used for lifting an anchor bolt cage, wherein the anchor bolt cage comprises an upper anchor plate, a lower anchor plate and a plurality of anchor bolts which penetrate through the upper anchor plate and the lower anchor plate and are connected with the upper anchor plate and the lower anchor plate, and the lifting appliance comprises: a connecting frame including a connecting base and at least two connecting beams, a first end of each connecting beam being mounted to the connecting base, and the at least two connecting beams extending radially from the connecting base; the at least two lifting lugs and the at least two connecting beams are connected to the second ends of the at least two connecting beams in a one-to-one correspondence mode, and the lower portion of each lifting lug is connected with a corresponding anchor bolt in the plurality of anchor bolts. According to the lifting appliance, when the anchor bolt cage is lifted, the anchor bolt cage can be prevented from deforming.

Description

Lifting appliance

Technical Field

The invention relates to the technical field of wind power generation, in particular to a lifting appliance for lifting an anchor bolt cage.

Background

The anchor plate of the anchor bolt cage used by the wind turbine generator system is generally integral, i.e. the anchor plate is a whole circle. With the development of large megawatt wind generating sets, the diameter of the tower barrel is continuously increased, so that the diameter of the anchor bolt cage is increased, and the diameter of the anchor plate is correspondingly increased. Because the crab-bolt cage is used for being connected with the tower section of thick bamboo, consequently to the machining precision requirement of crab-bolt cage high, along with the diameter increase of anchor slab, the required space of anchor slab manufacturing and the manufacturing degree of difficulty also can increase. In addition, for wind generating sets on land and at sea, transporting anchor plates with larger diameters is extremely inconvenient, and particularly, transporting anchor plates at sea is higher in cost.

Therefore, in order to solve the above problems, the anchor plate is generally designed to be split. That is, one anchor plate is divided into a plurality of sheet bodies, so that transportation is facilitated and the problem of high transportation cost can be solved. In practice, anchor cages are usually installed and used on site. Currently, the method used for hoisting anchor cages is the strap method, i.e. straps are directly connected to the anchor plate. When the assembled anchor bolt cage is hoisted, the anchor plate is directly stressed, so that the anchor plate is very easy to deform due to the tension, and the anchor bolt cage has the risk of deformation. Therefore, the bolt holes cannot be aligned when the anchor bolt cage and the tower barrel are installed.

Disclosure of Invention

Therefore, the invention aims to provide a lifting appliance to solve the problem that an anchor bolt cage is easy to deform in the lifting process.

According to an aspect of the present invention, there is provided a hanger for lifting an anchor bolt cage, the anchor bolt cage including an upper anchor plate, a lower anchor plate, and a plurality of anchor bolts penetrating and connecting the upper anchor plate and the lower anchor plate, wherein the hanger includes: a connecting frame including a connecting base and at least two connecting beams, a first end of each connecting beam being mounted to the connecting base, and the at least two connecting beams extending radially from the connecting base; the at least two lifting lugs and the at least two connecting beams are connected to the second ends of the at least two connecting beams in a one-to-one correspondence mode, and the lower portion of each lifting lug is connected with a corresponding anchor bolt in the plurality of anchor bolts. The lifting lugs are connected with the anchor bolts, so that the anchor bolt cage can be prevented from deforming due to the vertical component force of the pulling force during hoisting.

Preferably, the at least two connection beams may include a plurality of connection beams disposed at predetermined angular intervals. A plurality of tie-beams set up according to predetermined angle interval, can make the pulling force of hoist and mount crab-bolt cage evenly act on the crab-bolt cage.

Preferably, the at least two connecting beams may comprise at least one pair of connecting beams, and each pair of connecting beams is arranged in line with the connecting socket. Through the straight line arrangement, the deformation of the anchor bolt cage due to the horizontal component of the pulling force during hoisting can be prevented.

Preferably, the spreader may further comprise an adjustment member, which may be provided between the second end of each connecting beam and the respective lifting lug, for adjusting the distance between each lifting lug and the connecting socket. Because the distance between the lifting lug and the connecting seat is adjustable, the lifting appliance can be used for lifting anchor bolt cages with different diameters.

Preferably, the adjustment member may be a rack and pinion structure, a worm and gear structure, a hydraulic cylinder structure, a cylinder structure, or a screw structure.

Preferably, the adjustment member may comprise an adjustment plate connectable between the second end of each connecting beam and the corresponding ear via a fastener, wherein the adjustment plate may comprise a kidney-shaped aperture connected with each connecting beam or the corresponding ear. Preferably, the lifting lug may include: the bottom plate is used for being connected with an anchor bolt; and the hoisting assembly is fixed on the bottom plate, and a hoisting hole is formed in the upper part of the hoisting assembly.

Preferably, the hoist assembly may comprise: the connecting plate is fixed on the bottom plate; the hoisting plate is fixed on the connecting plate, and the hanging belt hole is formed in the hoisting plate.

Preferably, the hoist assembly can further include: the top plate is fixed on the connecting plate, and the hoisting plate is fixed on the top plate; the first reinforcing plates are fixed on the bottom plate and the connecting plate; and the second reinforcing plates are fixed on the top plate and the hoisting plate.

Preferably, the coupling socket may include an upper fixing plate, a lower fixing plate, and a plurality of partition plates that connect the upper fixing plate and the lower fixing plate and partition a space defined by the upper fixing plate and the lower fixing plate into a plurality of receiving parts, and the first end of each coupling beam is received and fixed in the corresponding receiving part.

According to the lifting appliance disclosed by the invention, the lifting lug is connected with the anchor bolt, so that the anchor bolt cage can be prevented from deforming due to the vertical component of the pulling force during lifting. In addition, according to the lifting appliance provided by the invention, the anchor bolt cage is radially and outwards supported by the lifting appliance, so that the anchor bolt cage can be prevented from being deformed due to the horizontal component of the tensile force during lifting. In addition, according to the lifting appliance disclosed by the invention, the distance between the lifting lug and the connecting seat is adjustable, so that the lifting appliance can lift anchor bolt cages with different diameters. In addition, the lifting appliance is simple to install, high in universality and capable of saving installation time.

Drawings

The above and other objects and features of the present invention will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic view showing the overall structure of a spreader hoisting anchor cage according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of a portion of the upper anchor plate of the spreader and anchor cage shown in fig. 1.

Fig. 3 is a plan view of fig. 2, wherein the connecting member of the anchor cage is not shown in fig. 2.

Fig. 4 is a schematic structural view showing a spreader according to an embodiment of the present invention.

Fig. 5 is a schematic structural view illustrating a coupling socket of a spreader according to an embodiment of the present invention.

Fig. 6 is a schematic view illustrating a portion where a connection beam and a lifting lug of a spreader are connected according to an embodiment of the present invention.

Fig. 7 is a schematic structural view illustrating a lifting lug of a spreader according to an embodiment of the present invention.

Fig. 8 is a schematic structural view illustrating a connection beam of a spreader according to an embodiment of the present invention.

Fig. 9 is a schematic structural view illustrating a bottom plate of a lifting lug of a spreader according to an embodiment of the present invention.

The reference numbers illustrate:

10: an anchor bolt cage; 11: an upper anchor plate; 11a: an arc-shaped sheet body; 12: a lower anchor plate; 13: an anchor bolt; 14: a connecting member; 21: a connecting frame; 211: a connecting beam; 211a: a first plate connection hole; 212: a connecting seat; 212a: an upper fixing plate; 212b, and (3 b): a lower fixing plate; 212c: a partition plate; 22: lifting lugs; 221: a base plate; 221a: an anchor bolt mounting hole; 222: a connecting plate; 222a: a second plate connection hole; 223: hoisting the plate; 223a: hoisting holes; 224: a top plate; 225: a first reinforcing plate; 226: a second reinforcing plate; 23: an adjusting plate; 24: a fastener; 30: a sling; 40: a hoisting device; 41: and (4) a lifting hook.

Detailed Description

Embodiments of the present invention will now be described in detail with reference to the drawings, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

An example of a spreader hoisting anchor cage according to an embodiment of the invention is shown in fig. 1, but the invention is not limited thereto, but it can also hoist other items to be hoisted. In the following, a specific structure of a spreader according to an embodiment of the present invention will be described by taking the spreader as an example for hoisting an anchor cage.

As shown in fig. 1 to 4, a spreader according to an embodiment of the present invention may include a connecting frame 21 and lifting eyes 22. The connection frame 21 may include six connection beams 211 and connection seats 212, a first end of each connection beam 211 may be mounted to the connection seat 212, and the six connection beams 211 may radially extend from the connection seat 212. The six lifting lugs 22 may be connected to the second ends of the connection beams 211 in one-to-one correspondence with the six connection beams 211.

Although it is shown in fig. 1 to 4 that the spreader includes six connecting beams 211 and accordingly six lifting eyes 22, the number of the connecting beams 211 is not limited thereto, and the number of the connecting beams 211 may be designed according to actual needs. For example, the number of the connection beams 211 may be two, three, four, five, six, etc., i.e., the number of the connection beams 211 may be at least two.

When the number of the connection beams 211 is two, the connection seats 212 may be omitted, i.e., the two connection beams 211 may be integrally formed as one whole beam. When the number of the connection beams 211 is three or more, the plurality of connection beams 211 may be disposed at a predetermined angular interval, for example, in the case where the number of the connection beams 211 is three, the three connection beams 211 may be disposed at an angular interval of 120 degrees; for another example, in the case where the number of the connection beams 211 is four, the three connection beams 211 may be disposed at angular intervals of 90 degrees.

Fig. 1 to 3 also show the structure of the anchor cage 10. The anchor cage 10 may include an upper anchor plate 11, a lower anchor plate 12, and a plurality of anchor bolts 13 penetrating through and connecting the upper anchor plate 11 and the lower anchor plate 12. The upper anchor plate 11 may include a plurality of arc-shaped pieces 11a, and the lower anchor plate 12 may have a similar structure to the upper anchor plate 11. The plurality of arc-shaped blades 11a may be connected to each other by the connection member 14 to form the upper anchor plate 11 or the lower anchor plate 12. Since the upper and

lower anchor plates

11 and 12 include the plurality of arc-shaped blade bodies 11a, it is more convenient to manufacture and transport the upper and

lower anchor plates

11 and 12.

In the hoisting of the anchor cage, the lifting lug 22 can be connected to the respective anchor 13 of the anchor cage 10, in particular the lifting lug 22 can be connected to the part of the anchor 13 located above the upper anchor plate 11. Since the lifting lug 22 is connected to the anchor bolt 13, the anchor bolt 13 is subjected to a vertical component of the tensile force of the hoisting anchor cage 10. At this time, the upper anchor plate 11 does not generate stress concentration due to the vertical component force, and therefore the upper anchor plate 11 can be prevented from being deformed due to the vertical component force.

Preferably, the connection beam 211 may include at least one pair of connection beams 211 and each pair of connection beams 211 may be arranged in line with the connection seat 212. As shown in fig. 1 to 4, the connection beam 211 includes three pairs of connection beams 211, and each pair of connection beams 211 is arranged in line with the connection seat 212. Although it is disclosed above that the connection beam 211 may include at least one pair of connection beams 211, and each pair of connection beams 211 may be linearly arranged with the connection seats 212, the present invention is not limited thereto, and the connection beam 211 may include three or more odd number of beams radially distributed at predetermined angular intervals centering on the connection seats 212. With such a construction of the connecting frame 21, the connecting beams 211 can radially outwardly support the anchor cage 10, so that a deformation of the anchor cage 10 due to a horizontal component of force can be prevented.

Next, specific structures of the attachment frame 21 and the lifting lug 22 of the spreader will be described with reference to fig. 4 to 9.

As described above, the connection frame 21 may include the connection beam 211 and the connection seats 212, the first end of the connection beam 211 may be mounted to the connection seats 212, and the connection beam 211 may radially extend from the connection seats 212. In this embodiment, the connection beam 211 may be a channel or an i-beam, and may be fixedly mounted to the connection block 212, e.g., by welding, or the like, or may be removably mounted to the connection block 212, e.g., by fasteners, or the like.

As shown in fig. 5, the connection holder 212 may include an upper fixing plate 212a, a lower fixing plate 212b, and a plurality of partition plates 212c. The upper and

lower fixing plates

212a and 212b may be formed in a circular shape or a polygonal shape. A plurality of partition plates 212c may connect the upper fixing plate 212a and the lower fixing plate 212b and partition a space formed by the upper fixing plate 212a and the lower fixing plate 212b into a plurality of receiving parts. The first end of the connection beam 211 may be inserted into the receiving portion and fixed thereto. Although a specific structure of the connection seat 212 is illustrated in fig. 5, it is not limited thereto as long as a member capable of connecting a plurality of connection beams 211 may be used as the connection seat 212.

Further, the second end of the connection beam 211 may be connected to the lifting lug 22. Preferably, the spreader may further include an adjustment member, which may be disposed between the second end of each connection beam 211 and the corresponding lifting lug 22, for adjusting a distance between each lifting lug 22 and the connection seat 212. Since the distance between each lifting lug 22 and the connecting socket 212 is adjustable, the spreader can be used to hoist anchor cages of different diameters.

As an example, the adjusting member may be a telescopic member such as a hydraulic cylinder structure, an electric cylinder structure, a pneumatic cylinder structure, etc., and the telescopic member may be connected between the second end of each connection beam 211 and the corresponding lifting lug 22 to adjust the distance between the lifting lug 22 and the connection seat 212 by its own telescopic movement. For another example, the adjusting member may also be a rack and pinion structure, a worm and gear structure, a lead screw structure, or the like, to achieve the adjustment of the distance by the mutual movement between the two members. For example, when the adjusting member is a rack and pinion structure, a gear of the rack and pinion structure may be mounted on one of the second end of each of the connection beams 211 and the corresponding lifting lug 22, a rack of the rack and pinion structure may be mounted on the other of the second end of each of the connection beams 211 and the corresponding lifting lug 22, and the gear may be engaged with the rack to adjust the distance between the lifting lug 22 and the link seat 212 by the movement of the gear along the rack. The arrangement of the worm gear structure and the lead screw structure can be similar to that of the gear rack structure.

As another example, as shown in fig. 6, the adjustment member may include an adjustment plate 23, and the adjustment plate 23 is connected between the second end of each connection beam 211 and the corresponding lifting lug 22 by a fastener 24. The adjusting plate 23 may include a kidney-shaped hole connected to each of the connection beams 211 or the corresponding shackle 22 to enable adjustment of the distance between the shackle 22 and the connection seat 212. Alternatively, the adjustment plate 23 may be integrally formed with the connection beam 211.

Specifically, the lifting lug 22 may include a base plate 221 and a lifting assembly, the base plate 221 may be used for connecting with the anchor bolt 13, and the lifting assembly may be fixed on the base plate 221 for lifting the anchor bolt cage. The adjusting plate 23 may be disposed between the hoist assembly and the connection beam 211.

The lifting assembly may include a connection plate 222 and a lifting plate 223. The connection plate 222 may be fixed on the bottom plate 221, and the adjustment plate 23 may be connected to the connection plate 222. The hanging plate 223 is fixed to the connecting plate 222 and is formed with a hanging strip hole 223a for connecting the hanging strip 30 hooked on the hook 41 of the hanging device 40, thereby accomplishing the hanging of the anchor cage 10.

The adjusting plate 23 may be formed with a beam coupling hole 23a and a shackle coupling hole 23b, and accordingly, as shown in fig. 7 and 8, the coupling plate 222 of the shackle 22 may be formed with a second plate coupling hole 222a corresponding to the shackle coupling hole 23b, and the coupling beam 211 may be formed with a first plate coupling hole 211a corresponding to the beam coupling hole 23 a. The beam coupling hole 23a or the shackle coupling hole 23b may be a kidney-shaped hole extending in a length direction of the coupling beam 211. Alternatively, the adjustment plate 23 may be integrally formed with the connection plate 222 of the shackle 22, and a kidney-shaped hole may be formed in the connection beam 211.

As shown in fig. 6, as an example, the beam coupling hole 23a may be a circular hole, and the first plate coupling hole 211a may be correspondingly formed as a circular hole so that the coupling beam 211 and the adjusting plate 23 may be coupled and fixed through the circular hole, and the shackle coupling hole 23b may be a kidney-shaped hole, and the second plate coupling hole 222a may be correspondingly formed as a kidney-shaped hole so that the relative positions of the coupling beam 211 and the adjusting plate 23 in the radial direction of the anchor cage 10 are adjusted through the kidney-shaped hole, thereby adjusting the distance between the shackle 22 and the coupling seat 212. Of course, both the beam coupling hole 23a and the lug coupling hole 23b may be kidney-shaped holes extending in the length direction of the coupling beam 211, so that the adjustment of the distance between the lug 22 and the coupling seat 212 may also be achieved.

In addition, in order to connect the base plate 221 with the anchor bolt 13, as shown in fig. 9, an anchor bolt mounting hole 221a may be formed on the base plate 221 of the shackle 22. Preferably, the anchor bolt mounting hole 221a may be a kidney-shaped hole extending in the circumferential direction of the upper anchor plate 11. When the hoist is used for hoisting the crab-bolt cage of different diameters, the crab-bolt number of the crab-bolt cage of different diameters and the interval between the crab-bolt are different, therefore the crab-bolt mounting hole 221a of waist type can match different crab-bolt numbers and different crab-bolt intervals to make crab-bolt 13 be connected with bottom plate 221, and can improve installation stability.

In addition, to enhance the structural stability of the lifting lug 22, the hoist assembly may further include a top plate 224, a plurality of first reinforcement plates 225, and a plurality of second reinforcement plates 226. A top plate 224 may be fixed to the connecting plate 222, and a lifting plate 223 may be fixed to the top plate 224. A plurality of first reinforcing plates 225 may be fixed to the base plate 221 and the connection plate 222. A plurality of second reinforcement panels 226 may be secured to the top panel 224 and the hanger panel 223.

Although the structures of the link frame 21 and the lifting lugs 22 are described above, the structures of the link frame 21 and the lifting lugs 22 are not limited thereto, and structures similar to the link frame 21 and the lifting lugs 22 in the embodiment may be used as long as the functions of hoisting and reducing deformation of the anchor bolt cage can be performed.

Although the embodiments of the present invention have been described in detail above, those skilled in the art may make various modifications and alterations to the embodiments of the present invention without departing from the spirit and scope of the present invention. It will be understood that modifications and variations may occur to those skilled in the art, which modifications and variations may be within the spirit and scope of the embodiments of the invention as defined by the appended claims.

Claims

1. A lifting appliance is used for lifting an anchor bolt cage (10), the anchor bolt cage (10) comprises an upper anchor plate (11), a lower anchor plate (12) and a plurality of anchor bolts (13) penetrating and connecting the upper anchor plate (11) and the lower anchor plate (12),

characterized in that, the hoist includes:

a connection bracket (21), the connection bracket (21) comprising a connection seat (212) and at least two connection beams (211), a first end of each connection beam (211) being mounted to the connection seat (212), and the at least two connection beams (211) extending radially from the connection seat (212), the at least two connection beams (211) comprising at least one pair of connection beams (211), and each pair of connection beams (211) being arranged in line with the connection seat (212);

at least two lifting lugs (22), at least two lifting lugs (22) and at least two connecting beams (211) are connected to the second ends of the at least two connecting beams (211) in a one-to-one correspondence mode, and the lower portion of each lifting lug (22) is connected with the portion, located above the upper anchor plate (11), of the corresponding anchor bolt (13) in the plurality of anchor bolts (13).

2. The spreader according to claim 1, wherein the at least two connection beams (211) comprise a plurality of connection beams (211) arranged at predetermined angular intervals.

3. A spreader according to claim 1, further comprising an adjustment member provided between the second end of each connecting beam (211) and the respective lifting lug (22) for adjusting the distance between each lifting lug (22) and the connection socket (212).

4. The spreader according to claim 3, wherein the adjustment member is a rack and pinion structure, a worm and gear structure, a hydraulic cylinder structure, a cylinder structure, or a lead screw structure.

5. A spreader according to claim 3, wherein the adjustment members comprise adjustment plates (23), the adjustment plates (23) being connected between the second end of each connecting beam (211) and the respective lifting lug (22) by fasteners (24),

wherein the adjusting plate (23) comprises a kidney-shaped hole connected with each connecting beam (211) or the corresponding lifting lug (22).

6. The spreader according to claim 5, wherein the lifting lug (22) comprises:

a base plate (221), wherein the base plate (221) is used for connecting with the anchor bolt (13);

a hoisting assembly fixed on the bottom plate (221) and having a sling hole (223 a) formed at an upper portion thereof.

7. The spreader of claim 6, wherein the hoist assembly comprises:

a connecting plate (222), wherein the connecting plate (222) is fixed on the bottom plate (221);

a hanging plate (223), the hanging plate (223) being fixed on the connecting plate (222), the hanging hole (223 a) being formed on the hanging plate (223).

8. The spreader of claim 7, wherein the hoist assembly further comprises:

a top plate (224), the top plate (224) being fixed to the connecting plate (222), and the hanger plate (223) being fixed to the top plate (224);

a plurality of first reinforcing plates (225), the plurality of first reinforcing plates (225) being fixed to the base plate (221) and the connecting plate (222);

a plurality of second reinforcement plates (226), the plurality of second reinforcement plates (226) being fixed to the top plate (224) and the hanger plate (223).

9. The spreader according to claim 1, wherein the connection socket (212) includes an upper fixing plate (212 a), a lower fixing plate (212 b), and a plurality of partition plates (212 c) which connect the upper fixing plate (212 a) and the lower fixing plate (212 b) and partition a space defined by the upper fixing plate (212 a) and the lower fixing plate (212 b) into a plurality of receiving parts, and the first end of each connection beam (211) is received and fixed in the corresponding receiving part.