CN217780544U - Center post handling frock - Google Patents

Abstract

The utility model relates to the technical field of tokamak devices, and provides a central column hoisting tool, which comprises a vertically arranged hoisting column; the hoisting column is provided with a positioning cylinder and an anti-rotation positioning block; the lower end of the hoisting column is provided with a bearing disc; and the upper end of the hoisting column is provided with a lifting lug assembly. Compared with the prior art, the utility model discloses set up the hoisting point on the handling frock, not only avoided the center post to appear coil deformation and the insulating layer condition of suffering destruction when hoist and mount, also need not to adopt extra auxiliary measure or frock to protect the center post in hoist and mount process moreover, just so greatly reduced the hoist and mount degree of difficulty and the hoist and mount cost of center post, improved hoist and mount efficiency.

Description

Center post handling frock

Technical Field

The utility model belongs to the technical field of the tokamak device technique and specifically relates to a center post handling frock.

Background

The structure of the central column is shown in fig. 1, 2; referring to fig. 1 and 2, the central column 90 includes a column 92 formed by 20 inner legs 91 in a substantially L-shape and assembled into an approximately cylindrical polygonal structure along a vertical center line, and a coil 93 wound around a cylindrical section of the column 92. For example, the height of the shaped central post 90 is H =4972mm; the diameter of the 20-sided polygonal inscribed circle of the inner cavity of the central column 90 is D1=540mm; the diameter of a polygonal circumscribed circle at the lower part of the central column 90 is D2=4040mm; the outer diameter of the cylinder 92 wound with the coil 93 is D3=1640mm; the bottom surface of the central column 90 is circular, the outer diameter thereof is D4=2860mm, and the inner diameter thereof is D5=1506mm; the central post 90 is manufactured to have a total weight of about 80t.

The central column is a core component of the tokamak device, and as the manufactured central column has a huge body and a unique structure, long-distance road transportation cannot be carried out if the central column is manufactured outside the field; therefore, a manufacturing workshop needs to be arranged near the installation site, and after the central column is manufactured in the manufacturing workshop, the central column is hoisted to the installation position for installation.

At present, the center post often adopts the mode of binding or sets up the hoisting point on the center post and hoist, but because the material texture of center post is soft, insulating requirement is high, current hoist and mount mode causes coil deformation and insulating layer to suffer destruction very easily. Consequently, in order to prevent the central post coil deformation and the insulating layer from suffering the condition of destruction when hoist and mount, often adopt more auxiliary measure and frock to protect the central post at hoist and mount in-process, not only increased the hoist and mount degree of difficulty and the hoist and mount cost of central post, reduced hoist and mount efficiency moreover.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that: the utility model provides a center post handling frock reduces the hoist and mount degree of difficulty of center post.

The utility model provides a technical scheme that its technical problem adopted is: the central column hoisting tool comprises a hoisting column which is vertically arranged; the hoisting column is provided with a positioning cylinder and an anti-rotation positioning block; the lower end of the hoisting column is provided with a bearing disc; and the lifting lug assembly is installed at the upper end of the lifting column.

Furthermore, the bearing disc is sleeved on the hoisting column and can move along the axial direction of the hoisting column; a ring key is arranged below the bearing plate through a bolt; the ring key is formed by splicing two parts, and the inner diameter of the ring key is clamped in the clamping groove on the peripheral surface of the hoisting column.

Further, the bearing plate comprises a sleeve and an annular bottom plate; the sleeve is coaxially fixed in the inner hole of the annular bottom plate.

Furthermore, the bearing plate also comprises an insulating base plate arranged on the upper surface of the annular bottom plate.

Furthermore, the lower end of the hoisting column is provided with a guide positioning hole.

Furthermore, the hoisting columns comprise an upper hoisting column and a lower hoisting column which are sequentially arranged from top to bottom; the lower end of the upper hanging column is connected with the upper end of the lower hanging column through a threaded structure.

Furthermore, the thread structure comprises an internal thread hole arranged on the upper end face of the lower hanging column and an external thread section which is arranged on the upper hanging column and matched with the internal thread hole.

Furthermore, an anti-rotation structure is arranged between the upper hanging column and the lower hanging column; the anti-rotation structure comprises a flange fixed on the peripheral surface of the upper hanging post, a positioning hole vertically penetrating through the flange, a positioning groove arranged on the upper end surface of the lower hanging post, and a positioning pin penetrating through the positioning hole and with the lower end arranged in the positioning groove.

Furthermore, an upper positioning device is arranged on the hoisting column; the positioning cylinder and the anti-rotation positioning block are arranged between the upper positioning device and the bearing disc.

Furthermore, a transportation fixing device is also arranged on the hoisting column; the transportation fixing device is arranged between the upper positioning device and the lifting lug assembly.

The utility model has the advantages that: the embodiment of the utility model provides a center post handling frock, through setting up hoist and mount post and bearing plate, is used for the center post cover is established outside hoist and mount post, and supports on the bearing plate; through set up a location section of thick bamboo on the hoist and mount post and prevent changeing the locating piece for carry out radial and circumference location to the center post, guarantee center post and hoist and mount post static relatively, prevent the condition that friction and collision appear between center post and the hoist and mount post, through set up lug assembly in the upper end of hoist and mount post, be used for forming the hoisting point on the hoist and mount post. During hoisting, the central column is hoisted only by mounting the central column on the hoisting tool and connecting a lifting hook of hoisting equipment with the lifting lug assembly; compared with the prior art, the utility model discloses set up the hoisting point on the handling frock, not only avoided the center post to appear the coil deformation when hoist and mount and the insulating layer suffers the condition of destruction, also need not to adopt extra auxiliary measure or frock to protect the center post moreover at the hoist and mount in-process, just so greatly reduced the hoist and mount degree of difficulty and the hoist and mount cost of center post, improved hoist and mount efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below; it is obvious that the drawings in the following description are only some of the embodiments described in the present application, and that, to a person skilled in the art, other drawings can also be derived from them without inventive effort.

FIG. 1 is a schematic structural view of a central column;

FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic structural diagram of a center column hoisting tool provided by the embodiment of the present invention;

FIG. 4 is a schematic view of the structure of the load-bearing plate mounted to the lifting column;

FIG. 5 is a view taken along line A of FIG. 4;

FIG. 6 is a schematic view of the connection of the upper suspension post to the lower suspension post;

FIG. 7 is a view taken along line B of FIG. 6;

figure 8 is a schematic view of the shackle assembly mounted to a lifting column;

FIG. 9 is a view taken along line C of FIG. 8;

FIG. 10 is a schematic view of the upper positioning device;

FIG. 11 is a schematic view of the construction of a shipping fixture;

FIG. 12 is a schematic structural diagram of the L-shaped inner leg after being mounted on the center column hoisting tool;

fig. 13 is a schematic structural view after the center column is mounted to the center column lifting tool;

fig. 14 is a state view when the center pillar is transported by the transfer vehicle.

The reference numbers in the figures are: 1-lifting column, 2-positioning cylinder, 3-anti-rotation positioning block, 4-bearing disc, 5-lifting lug assembly, 6-annular key, 7-upper positioning device, 8-transportation fixing device, 10-inclined pull rope, 11-guiding positioning hole, 12-upper lifting column, 13-lower lifting column, 14-external thread section, 15-internal thread hole, 16-flange, 17-positioning pin, 18-positioning groove, 19-positioning hole, 20-lifting lug, 21-transportation vehicle, 41-sleeve pipe, 42-annular bottom plate, 43-insulating base plate, 44-reinforcing rib plate, 45-flat key, 46-key groove, 51-lifting lug transverse shaft, 52-lifting lug plate, 53-lifting lug hole, 71-first anchor ear, 72-positioning ring, 73-connecting rod, 81-second anchor ear, 82-connecting plate, 90-central column, 91-inner leg, 92-column body, 93-coil.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. In case of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

The first embodiment is as follows:

referring to fig. 3, the center column hoisting tool provided in the embodiment of the present invention includes a vertically arranged hoisting column 1; the hoisting column 1 is provided with a positioning cylinder 2 and an anti-rotation positioning block 3; the lower end of the hoisting column 1 is provided with a bearing plate 4; and a lifting lug assembly 5 is installed at the upper end of the hoisting column 1.

The hoisting column 1 is a vertically arranged cylinder, and the size of the cross section of the hoisting column 1 is smaller than that of an inscribed circle of a twenty-sided polygon of the inner cavity of the central column 90, so that the hoisting column 1 can penetrate through the inner cavity of the central column 90.

The positioning cylinder 2 is of a cylindrical structure, and the outer diameter of the positioning cylinder is equal to the diameter of an inscribed circle of a twenty-sided polygon of the inner cavity of the central column 90. The positioning cylinder 2 is coaxially fixed on the hoisting column 1 and used for radially positioning the central column 90 so as to keep the central column 90 and the hoisting column 1 in a concentric state in the hoisting process. The number of the positioning cylinders 2 may be one, or two or more. In this embodiment, the number of the positioning cylinders 2 is two, and the two positioning cylinders 2 are arranged at intervals up and down; this can reduce the length of each lock cylinder 2 while securing the positioning reliability.

In order to facilitate the installation and the disassembly of the positioning cylinder 2, the positioning cylinder 2 is formed by splicing at least two arc-shaped plates. In this embodiment, a location section of thick bamboo 2 is formed by eight arcs concatenation, the arc passes through bolt, joint or the mode that bonds and 1 fixed connection of hoist and mount post. The material of the positioning cylinder 2 is preferably a material with hardness smaller than that of the central column 90, such as nylon; after the central column 90 is lifted and positioned in place, the possibility that the central column 90 is damaged due to friction between the positioning cylinder 2 and the central column 90 is avoided in the process of extracting the lifting column 1 from the central column 90, and the quality of the central column 90 is ensured.

The anti-rotation positioning blocks 3 are fixed on the outer peripheral surface of the hoisting column 1 and used for being clamped in gaps between the adjacent inner legs 91 of the central column 90 during hoisting, and the central column 90 is prevented from rotating relative to the hoisting column 1 during hoisting. The anti-rotation positioning block 3 is preferably fixedly connected with the hoisting column 1 through a bolt. One, two or more groups of anti-rotation positioning blocks 3 can be arranged on the hoisting column 1; each group of anti-rotation positioning blocks 3 comprises at least two blocks uniformly distributed along the circumference of the hoisting column 1. In the embodiment, two groups of anti-rotation positioning blocks 3 are arranged on the hoisting column 1, the two groups of anti-rotation positioning blocks 3 correspond to the two positioning cylinders 2 respectively, and each group of anti-rotation positioning blocks 3 is arranged below the corresponding positioning cylinder 2; each group of anti-rotation positioning blocks 3 comprises ten anti-rotation positioning blocks 3 uniformly distributed along the circumference of the hoisting column 1.

The bearing plate 4 is installed at the lower end of the hoisting column 1 and used for supporting the bottom of the central column 90 during hoisting, and further transmitting the load of the central column 90 to the hoisting column 1 through the bearing plate 4. The lifting lug assembly 5 is installed at the upper end of the lifting column 1 and used for forming a lifting point during lifting, so that a lifting hook of lifting equipment is connected with the lifting lug assembly 5, and the load borne by the lifting column 1 is transmitted to the lifting equipment.

The embodiment of the utility model provides a use method of center post handling frock does:

s1, assembling a central column hoisting tool, and arranging the central column hoisting tool on a winding machine as a positioning mandrel; specifically, the lower end of a hoisting column 1 is fixed on a faceplate of a winding machine, the hoisting column 1 is ensured to be coaxial with the faceplate, and the upper end of the hoisting column 1 is fixed through a bearing;

s2, referring to fig. 12, the L-shaped inner legs 91 are assembled by taking the hoisting column 1 as a center, specifically, the inner legs 91 are abutted against the positioning cylinder 2, the bottoms of the inner legs 91 are supported on the bearing plate 4, and the positioning block assemblies are positioned in gaps between the adjacent inner legs 91; after all the inner legs 91 are installed, starting the winding machine, driving the hoisting column 1 to rotate by a faceplate of the winding machine, and further winding a coil 93 on a column 92 formed by assembling 20L-shaped inner legs 91 to form a central column 90, as shown in fig. 13;

s3, after the central column 90 is manufactured, a lifting hook of a lifting device is connected with the lifting lug assembly 5, the central column 90 is lifted to the transfer vehicle 21 through the lifting device, and the upper end of the lifting column 1 is fixed with the transfer vehicle 21 through the inclined pull rope 10, as shown in FIG. 14; then the central column 90 is transported to the installation site by the transport vehicle 21 and the central column 90 is hoisted in place by the hoisting equipment; the center post handling tooling is then removed from the center post 90.

The central column hoisting tool provided by the embodiment of the utility model is provided with the hoisting column 1 and the bearing disc 4, and is used for sleeving the central column 90 outside the hoisting column 1 and supporting the central column on the bearing disc 4; through set up a locating cylinder 2 and prevent changeing locating piece 3 on lifting column 1 for radially and the circumference location is carried out center post 90, guarantee center post 90 and lifting column 1 static relatively, prevent to appear the condition of friction and collision between center post 90 and the lifting column 1, set up lug assembly 5 through the upper end at lifting column 1, be used for forming the hoisting point on lifting column 1. During hoisting, the central column 90 can be hoisted only by mounting the central column 90 on the hoisting tool and connecting the lifting hook of the hoisting equipment with the lifting lug assembly 5; compared with the prior art, the utility model discloses set up the hoisting point on the handling frock, not only avoided the center post to appear the coil deformation when hoist and mount and the insulating layer suffers the condition of destruction, also need not to adopt extra auxiliary measure or frock to protect the center post moreover at the hoist and mount in-process, just so greatly reduced the hoist and mount degree of difficulty and the hoist and mount cost of center post, improved hoist and mount efficiency.

Example two:

referring to fig. 3, 4, and 5, in the center column hoisting tool provided in the embodiment of the present invention, the bearing disc 4 is sleeved on the hoisting column 1 and can move along the axial direction of the hoisting column 1; a ring key 6 is arranged below the bearing plate 4 through a bolt; the ring key 6 is formed by splicing two parts, and the inner diameter of the ring key 6 is clamped in the clamping groove on the outer peripheral surface of the hoisting column 1.

The ring key 6 is of a circular ring structure formed by splicing two parts, the outer diameter of the ring key 6 is larger than that of the hoisting column 1, and the inner diameter of the ring key 6 is smaller than that of the hoisting column 1. And an annular clamping groove is formed in the outer peripheral surface of the hoisting column 1, and the inner diameter of the annular key 6 is clamped in the clamping groove. The bearing plate 4 is sleeved on the hoisting column 1 and supported on the ring key 6, and two parts of the ring key 6 are connected with the bearing plate 4 through bolts, so that the bearing plate 4 is detachably connected with the hoisting column 1.

The dismounting process of the bearing plate 4 is as follows:

1) Dismantling the bearing plate 4 from the hoisting column 1: firstly, removing a connecting bolt between the bearing plate 4 and the ring key 6; then the ring key 6 is detached from the hoisting column 1; then the bearing plate 4 is moved downwards until the bearing plate 4 is separated from the hoisting column 1.

2) Install bearing plate 4 to hoisting post 1 on: firstly, sleeving a bearing plate 4 on a hoisting column 1 from the bottom of the hoisting column 1; then the ring key 6 is arranged below the bearing plate 4 and clamped in the clamping groove of the hoisting column 1; both parts of the ring key 6 are then bolted to the load bearing plate 4 and the load bearing plate 4 is supported on the ring key 6.

The embodiment of the utility model provides a center post handling frock is through setting up the ring key 6 of joint on hoist and mount post 1 for the load that bears bearing disc 4 transmits for hoist and mount post 1 through ring key 6. Because bearing plate 4 supports on ring key 6, just so make the bolt between bearing plate 4 and the ring key 6 only play the connection effect, avoid the bolt to bear extra gravity load, not only improved the life of bolt, make the easy dismounting of this bolt moreover, and then improved the convenience of bearing plate 4 dismouting.

Referring to fig. 4 and 5, the bearing plate 4 includes a sleeve 41 and an annular bottom plate 42; the sleeve 41 is coaxially fixed in the inner bore of the annular base plate 42.

The inner diameter of the casing 41 is slightly larger than the outer diameter of the hoisting column 1, so that the casing 41 can be sleeved on the hoisting column 1 and can move along the axial direction of the hoisting column 1. The annular bottom plate 42 is of a circular ring structure. The inner diameter of the annular base plate 42 is slightly larger than the outer diameter of the sleeve 41, so that the sleeve 41 is arranged in the inner hole of the annular base plate 42 and the sleeve 41 and the annular base plate 42 are welded together. The outer diameter of the annular base plate 42 is greater than the inner diameter D5 of the bottom surface of the center post 90 so that the bottom surface of the center post 90 can be supported on the upper surface of the annular base plate 42.

In order to prevent the sleeve 41 from rotating relative to the hoisting column 1, it is preferable that the inner surface of the sleeve 41 is provided with a key groove 46 extending along the axial direction of the sleeve 41, the key groove 46 is open at the upper end and the lower end, and a flat key 45 fitted in the key groove 46 is fixed on the hoisting column 1. Through the cooperation of flat key 45 and keyway 46, can carry out circumference spacing to sleeve 41, prevent that sleeve 41 from rotating for the lifting column 1.

In order to protect the bottom surface of the central column 90 when the central column 90 is lifted, it is preferable that the bearing plate 4 further includes an insulating pad 43 disposed on the upper surface of the annular bottom plate 42.

The insulating base plate 43 is preferably made of epoxy phenolic layer sub-cloth plate material, and the insulating base plate 43 is connected with the annular bottom plate 42 through a screw or an adhesive mode. The insulating backing plate 43 is arranged to support the bottom surface of the central column 90 on the insulating backing plate 43, so as to protect the bottom surface of the central column 90.

In order to improve the connection strength between the sleeve 41 and the annular bottom plate 42, a reinforcing rib plate 44 is preferably welded between the outer circumferential surface of the sleeve 41 and the upper surface of the annular bottom plate 42. In this embodiment, ten reinforcing rib plates 44 are provided, the ten reinforcing rib plates 44 are uniformly distributed along the circumference of the casing 41, and the projections of the reinforcing rib plates 44 on the annular bottom plate 42 are located in the inner holes of the insulating base plate 43.

When the central column 90 is hoisted in place, in order to improve the efficiency of taking place, preferably, referring to fig. 4, the lower end of the hoisting column 1 is provided with a guide positioning hole 11. When the hoisting is in place, the central column 90 can be quickly in place only by inserting the guide positioning column into the guide positioning hole 11 through the matching of the guide positioning hole 11 at the lower end of the hoisting column 1 and the guide positioning column on the foundation, so that the in-place efficiency of the central column 90 is improved.

Example three:

referring to fig. 3, 6, and 7, in the center column hoisting tool provided in the embodiment of the present invention, the hoisting column 1 includes an upper hoisting column 12 and a lower hoisting column 13 sequentially arranged from top to bottom; the lower end of the upper suspension post 12 is connected with the upper end of the lower suspension post 13 through a thread structure.

In one embodiment, the outer diameter of the upper suspension post 12 is smaller than the outer diameter of the lower suspension post 13, and the thread structure includes an internal thread hole 15 provided on the upper end surface of the lower suspension post 13, and an external thread section 14 provided on the upper suspension post 12 and adapted to the internal thread hole 15. Further, two lifting lugs 20 are fixed to the upper end surface of the lower suspension post 13. Of course, as another embodiment, the male screw section 14 may be provided at the upper end of the lower suspension post 13, and the female screw hole 15 may be provided at the lower end of the upper suspension post 12.

The embodiment of the utility model provides a center post handling frock through setting up hoisting post 1 into upper portion davit 12 and lower part davit 13, when center post 90 take one's place and demolish the back with bearing plate 4 from hoisting post 1, the inner chamber of segmentable with upper portion davit 12 and lower part davit 13 from center post 90 is taken out, just so can reduce the reservation hoist and mount height between lifting device and the top of center post 90 to accomplish the work of demolising of center post handling frock under the highly limited condition of hoist and mount.

In the hoisting process, the central column 90 is used for preventing the upper hanging column 12 and the lower hanging column 13 from rotating relatively, so that the connection reliability between the upper hanging column 12 and the lower hanging column 13 is improved; preferably, an anti-rotation structure is arranged between the upper suspension post 12 and the lower suspension post 13; the anti-rotation structure comprises a flange 16 fixed on the outer peripheral surface of the upper hanging column 12, a positioning hole 19 vertically penetrating through the flange 16, a positioning groove 18 arranged on the upper end surface of the lower hanging column 13, and a positioning pin 17 penetrating through the positioning hole 19 and with the lower end arranged in the positioning groove 18.

The upper end of the upper suspension post 12 is the upper end of the suspension post 1, and the lower end of the lower suspension post 13 is the lower end of the suspension post 1. The shackle assembly 5 is mounted on the upper end of the upper suspension post 12; the bearing plate 4 is arranged at the lower end of the lower suspension column 13; the positioning cylinder 2 and the positioning block assembly 3 can be mounted on the upper suspension post 12 and also can be mounted on the lower suspension post 13. In this embodiment, the positioning cylinder 2 and the positioning block assembly 3 are both installed on the lower suspension post 13.

Example four:

referring to fig. 3, in the central column hoisting tool provided by the embodiment of the present invention, the hoisting column 1 is provided with an upper positioning device 7; the positioning cylinder 2 and the anti-rotation positioning block 3 are arranged between the upper positioning device 7 and the bearing disc 4.

The upper positioning device 7 is used for radially positioning the upper end of the central column 90 so as to further improve the reliability of the lifting tool for positioning the central column 90. In this embodiment, the upper positioning device 7 is detachably mounted on the upper suspension post 12.

Referring to fig. 10, the upper positioning device 7 includes a first hoop 71, a positioning ring 72, and a connecting rod 73. The first hoop 71 comprises two oppositely arranged first hoop plates, and the two first hoop plates are connected through bolts; the positioning ring 72 is an annular structure formed by splicing two sections; the first hoop 71 is arranged in the positioning ring 72; two sections of the positioning ring 72 respectively correspond to the two first hoop plates of the first hoop 71 one by one; each segment of the positioning ring 72 is connected to the corresponding first strap by a connecting rod 73 with adjustable length. Preferably, the connecting rod 73 is a screw structure with adjustable length.

When the installation and positioning are carried out, the first hoop 71 is firstly installed at the set position of the upper hoisting post 12, then the length of the connecting rod 73 is adjusted, the positioning ring 72 is in contact with the central post 90, the central post 90 is firmly supported, and the central post 90 and the hoisting post 1 are kept concentric. Preferably, the positioning ring 72 is provided with an elastic material such as rubber, and the elastic material is in contact with the central column 90 during the positioning process, so as to prevent the central column 90 from being damaged during the positioning process. In order to axially limit the upper positioning device 7 and prevent the upper positioning device 7 from moving on the upper suspension post 12, it is preferable that the upper suspension post 12 is provided with a positioning ring groove, and the first hoop 71 is installed in the positioning ring groove.

Referring to fig. 3, in the center column hoisting tool provided in the embodiment of the present invention, a transportation fixing device 8 is further installed on the hoisting column 1; the transport fixture 8 is arranged between the upper positioning means 7 and the shackle assembly 5.

The transportation fixing device 8 is used for fixing the stay cable 10 during transportation. In this embodiment, the transport fixture 8 is removably mounted to the upper davit 12.

Referring to fig. 11, the transportation fixing device 8 includes a second anchor ear 81 and a connecting plate 82; the second hoop 81 comprises two second hoop plates which are oppositely arranged and connected through a bolt; a plurality of connecting plates 82 are welded on each second hoop plate; each connecting plate 82 is provided with a connecting hole. During transportation, referring to fig. 14, the second anchor ear 81 is first installed at a set position of the upper suspension post 12, then the lower end of the diagonal rope 10 is connected to the transfer vehicle 21, and the upper end of the diagonal rope 10 is connected to the connecting hole of the connecting plate 82.

Referring to fig. 8 and 9, the shackle assembly 5 comprises a shackle transverse shaft 51 and a shackle plate 52; the number of the lifting lug plates 52 is two, the two lifting lug plates 52 are respectively arranged on two sides of the upper end of the lifting column 1, and the two lifting lug plates 52 are connected with the upper end of the lifting column 1 through lifting lug transverse shafts 51; each shackle plate 52 is provided with an elongated shackle hole 53. When in hoisting, the lifting lug hole 53 of the lifting lug plate 52 is connected with a lifting hook of hoisting equipment through a shackle.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The center column hoisting tool is characterized by comprising a hoisting column (1) which is vertically arranged; the hoisting column (1) is provided with a positioning cylinder (2) and an anti-rotation positioning block (3); the lower end of the hoisting column (1) is provided with a bearing disc (4); and a lifting lug assembly (5) is installed at the upper end of the hoisting column (1).

2. The center column lifting tool as claimed in claim 1, wherein the bearing plate (4) is sleeved on the lifting column (1) and can move along the axial direction of the lifting column (1); a ring key (6) is arranged below the bearing disc (4) through a bolt; the ring key (6) is formed by splicing two parts, and the inner diameter of the ring key (6) is clamped in the clamping groove on the outer peripheral surface of the hoisting column (1).

3. The center column lifting tool as claimed in claim 2, wherein the bearing plate (4) comprises a sleeve (41) and an annular bottom plate (42); the sleeve (41) is coaxially fixed in the inner hole of the annular bottom plate (42).

4. The center column handling tool of claim 3, wherein the bearing plate (4) further comprises an insulating pad (43) disposed on the upper surface of the annular bottom plate (42).

5. The center column hoisting tool as set forth in claim 1, wherein the lower end of the hoisting column (1) is provided with a guiding positioning hole (11).

6. The center column lifting tool as claimed in claim 1, wherein the lifting column (1) comprises an upper lifting column (12) and a lower lifting column (13) which are sequentially arranged from top to bottom; the lower end of the upper hanging column (12) is connected with the upper end of the lower hanging column (13) through a threaded structure.

7. The center column lifting tool as claimed in claim 6, wherein the threaded structure comprises an internal threaded hole (15) formed in the upper end surface of the lower lifting column (13), and an external threaded section (14) arranged on the upper lifting column (12) and matched with the internal threaded hole (15).

8. The center column lifting tool as recited in claim 7, characterized in that an anti-rotation structure is arranged between the upper lifting column (12) and the lower lifting column (13);

the anti-rotation structure comprises a flange (16) fixed on the outer peripheral surface of the upper hanging column (12), a positioning hole (19) vertically penetrating through the flange (16), a positioning groove (18) arranged on the upper end surface of the lower hanging column (13), and a positioning pin (17) penetrating through the positioning hole (19) and with the lower end arranged in the positioning groove (18).

9. The center column lifting tool as claimed in claim 1, wherein an upper positioning device (7) is mounted on the lifting column (1); the positioning cylinder (2) and the anti-rotation positioning block (3) are arranged between the upper positioning device (7) and the bearing disc (4).

10. The center column lifting tool as claimed in claim 9, wherein a transportation fixing device (8) is further mounted on the lifting column (1); the transportation fixing device (8) is arranged between the upper positioning device (7) and the lifting lug assembly (5).

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