CN218440447U

CN218440447U - Lifting gear box for ocean platform

Info

Publication number: CN218440447U
Application number: CN202222897169.4U
Authority: CN
Inventors: 毛方元; 侯玉江; 葛永昌; 禹本元; 戴志武; 张元�; 孙林; 王欣然; 唐磊
Original assignee: Nanjing High Accurate Marine Equipment Co Ltd
Current assignee: Nanjing High Accurate Marine Equipment Co Ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-02-03
Anticipated expiration: 2032-11-01

Abstract

The utility model discloses a lifting gear box for an ocean platform, which is characterized in that a climbing gear of a climbing gear assembly is rotatably arranged on a connecting frame, and the mounting frame is connected with the connecting frame; a first planet carrier of the first NGW planet wheel structure is rotationally connected with a first central shaft, and the first planet carrier is fixedly connected with the climbing gear; a second planet carrier of the second NGW planet wheel structure is rotationally connected with a second central shaft, and the first central shaft is fixedly connected with the second planet carrier; the torque arm is used for connecting the first inner gear ring and the second inner gear ring and is connected with the mounting frame; the driving mechanism can drive the second central shaft to rotate; the climbing gear assembly, the first NGW planetary wheel structure, the torsion arm, the second NGW planetary wheel structure and the driving mechanism are sequentially arranged from top to bottom along the height direction of the mounting frame. The risk of torsional deformation of the mounting frame is reduced, the number of connecting pieces for connecting the torque arm and the mounting frame can be reduced, the size of the torque arm is reduced, and the cost is saved.

Description

Lifting gear box for ocean platform

Technical Field

The utility model relates to a marine equipment technical field especially relates to lifting gear case for platform.

Background

The self-elevating offshore platform is suitable for the exploration and exploitation of petroleum and natural gas in the offshore area, and the elevating system is used as a key component device of the offshore oil drilling platform, belongs to large-scale offshore engineering matched equipment, and is highly valued in the design and manufacture of the platform. The device is used for lowering the pile legs of the platform before the platform drilling operation, lifting the platform to a certain height above the sea surface and then ballasting, so that the pile legs of the platform are firmly positioned on the seabed; after the platform finishes drilling operation, the pile leg is pulled out, the platform is lowered to the sea surface, and the pile leg can drift along with the platform at a shallow draft position in the process of shifting the platform to another operation site; the platform has sufficient security under the permitted storm loads.

In the prior art, a lifting gear box for an ocean platform mainly comprises a driving part, a gear train, a first planetary gear train, a second planetary gear train, an output assembly, a mounting frame, a torque arm and the like, wherein the driving part is in transmission connection with the gear train, an output shaft of the gear train transmits a torsional force to the first planetary gear train, the first planetary gear train transmits the torsional force to the second planetary gear train, and the second planetary gear train transmits the torsional force to the output assembly, the torque arm is arranged between the second planetary gear train and the output assembly and used for connecting an inner gear ring of the second planetary gear train with the output assembly, the mounting frame is used for supporting the lifting gear box for the ocean platform, and the end part of the mounting frame and the end part of the output assembly are connected through a connecting piece. When the driving mechanism drives the first planetary gear train, the second planetary gear train and the output assembly to operate, the torque arm is arranged between the second planetary gear train and the output assembly, the distance between the torque arm and the output assembly in the height direction is small, so that the torque force between the torque arm and the inner gear ring of the second planetary gear train is large, a circle of connecting piece is required to be arranged along the inner gear ring of the second planetary gear train to connect the inner gear ring and the torque arm of the second planetary gear train, the number of the connecting pieces is large, the specification of the torque arm is large, and secondly, the distance between the torque arm and the output assembly in the height direction is small, and when the driving mechanism drives the first planetary gear train, the second planetary gear train and the output assembly to operate, the torque force transmitted to the torque arm and the connecting piece is easy to cause the torsional deformation of the mounting frame.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lifting gear box for platform to the connection second planetary gear train's among the solution prior art ring gear and the quantity of torque arm are more, and the specification of torque arm is big, and the mounting bracket problem of torsional deformation easily takes place.

To achieve the purpose, the utility model adopts the following technical proposal:

lifting gear box for platform, it includes the mounting bracket, and set up in the lifting gear box body of mounting bracket, the lifting gear box body includes:

the climbing gear assembly comprises a connecting frame and a climbing gear rotatably arranged on the connecting frame, and the mounting frame is connected with the connecting frame;

the first NGW planet wheel structure comprises a first planet carrier, a first central shaft and a first inner gear ring, the first planet carrier is rotationally connected with the first central shaft, and the first planet carrier is fixedly connected with the climbing gear;

the second NGW planetary gear structure comprises a second planet carrier, a second central shaft and a second annular gear, the second planet carrier is rotationally connected with the second central shaft, and the first central shaft is fixedly connected with the second planet carrier;

the torque arm is used for connecting the first inner gear ring and the second inner gear ring and is connected with the mounting frame;

the driving mechanism can drive the second central shaft to rotate;

the climbing gear assembly, the first NGW planetary wheel structure, the torque arm, the second NGW planetary wheel structure and the driving mechanism are sequentially arranged from top to bottom along the height direction of the mounting rack.

Preferably, the mounting bracket is provided with two limiting grooves at intervals, the limiting grooves extend from bottom to top along the height direction of the mounting bracket, the torque arm is provided with two first connecting portions, the two first connecting portions and the two limiting grooves are arranged in a one-to-one correspondence manner, and the first connecting portions can be inserted into the limiting grooves.

Preferably, the lifting gear box for the ocean platform further comprises an adjusting assembly, and the adjusting assembly is used for limiting the relative position between the first connecting part and the side wall of the limiting groove.

Preferably, the adjusting component comprises an adjusting plate and a connecting plate detachably connected to the mounting frame, the adjusting plate is inserted into a gap between the side wall of the limiting groove and the first connecting portion, and two ends of the adjusting plate in the height direction of the mounting frame abut against the bottom wall of the limiting groove and the connecting plate respectively.

Preferably, the torsion arm further includes a second connecting portion and a third connecting portion connected to each other, the second connecting portion is detachably connected to the first inner ring gear, the third connecting portion is detachably connected to the second inner ring gear, and the two first connecting portions are uniformly and alternately connected to an outer peripheral surface of the second connecting portion.

Preferably, the mounting frame is provided with a first mounting hole, a second mounting hole and a third mounting hole at intervals along the height direction, the connecting frame comprises a first connecting frame and a second connecting frame, the first connecting frame and the second connecting frame are both connected with the climbing gear in a rotating mode and are respectively located at two ends of the climbing gear along the axial direction, the first connecting frame is inserted in the first mounting hole and is detachably connected with the mounting frame, the second connecting frame is inserted in the second mounting hole and is detachably connected with the mounting frame, and the first inner gear ring is inserted in the third mounting hole.

Preferably, the first NGW planetary gear structure further includes a first sun gear fixedly disposed on the first central shaft, and a plurality of first planetary gears circumferentially disposed at intervals on the first carrier, and the first planetary gears are engaged with the first ring gear and the first sun gear.

Preferably, the second NGW planetary gear structure further includes a second sun gear fixedly disposed on the second central shaft, and a plurality of second planet gears circumferentially disposed on the second planet carrier at intervals, and the second planet gears are engaged with both the second ring gear and the second sun gear.

Preferably, the driving mechanism includes a driving motor and a gear transmission mechanism, an output shaft of the driving motor is fixedly connected with an input shaft of the gear transmission mechanism, and an output shaft of the gear transmission mechanism is fixedly connected with the second central shaft.

Preferably, the number of the lifting gear box bodies is multiple, and the lifting gear box bodies are distributed in an array manner.

The utility model has the advantages that:

an object of the utility model is to provide a lifting gear box for platform, this lifting gear box for platform includes the mounting bracket, and set up in the lifting gear box body of mounting bracket, the lifting gear box body is including climbing the gear assembly, first NGW planet wheel structure, second NGW planet wheel structure, torque arm and actuating mechanism, this lifting gear box for platform, actuating assembly drives the rotation of second center pin, make second NGW planet wheel structure operation and drive the second planet carrier rotate around the second center pin, second planet carrier and first center pin fixed connection, thereby drive first center pin rotation, make first NGW planet wheel structure operation and drive first planet carrier rotate around first center pin, first planet carrier and the gear fixed connection that climbs of the gear assembly, thereby drive the gear rotation that climbs and export power. The climbing gear assembly, the first NGW planetary wheel structure, the torque arm, the second NGW planetary wheel structure and the driving mechanism are sequentially arranged from top to bottom along the height direction of the mounting frame, the torque arm is used for connecting the first inner gear ring and the second inner gear ring, the torque arm is connected with the mounting frame, and the mounting frame is further connected with the connecting frame, so that compared with the prior art, the span of the distance between the lifting gear box body and the two connecting positions of the mounting frame along the height direction of the mounting frame is large, the torque force transmitted to the connecting position of the torque arm and the mounting frame is reduced, the requirement on the connecting strength between the torque arm and the mounting frame is lower, the risk of torsional deformation of the mounting frame is effectively reduced, the reliability of the lifting gear box for the ocean platform is improved, the number of connecting pieces for connecting the torque arm and the mounting frame can be effectively reduced, the size of the torque arm is reduced, and the cost is saved.

Drawings

Fig. 1 is a schematic structural diagram of a lifting gear box for an ocean platform according to an embodiment of the present invention;

fig. 2 is a schematic partial structural diagram of a lifting gear box for an ocean platform according to an embodiment of the present invention;

fig. 3 is a schematic view of a part of a structure of a lifting gear box for an ocean platform according to an embodiment of the present invention;

FIG. 4 is a partial view of FIG. 1 at A;

fig. 5 is a schematic structural diagram of a torsion arm of a lifting gear box for an ocean platform according to an embodiment of the present invention.

In the figure:

1. a mounting frame; 11. a limiting groove; 12. a first mounting hole; 13. a second mounting hole; 14. a third mounting hole;

2. a lifting gear box body; 21. a climbing gear assembly; 211. a connecting frame; 2111. a first connecting frame; 2112. a second link frame; 212. a climbing gear; 22. a first NGW planetary wheel configuration; 221. a first carrier; 222. a first ring gear; 223. a first planet gear; 224. a first sun gear; 23. a second NGW planetary wheel configuration; 231. a second planet carrier; 232. a second ring gear; 233. a second planet wheel; 234. a second sun gear; 24. a torsion arm; 241. a first connection portion; 242. a second connecting portion; 243. a third connecting portion; 25. a drive mechanism; 251. a drive motor; 252. a gear transmission mechanism;

3. an adjustment assembly; 31. an adjusting plate; 32. a connecting plate.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The utility model provides a lifting gear box for ocean platform, as shown in fig. 1-3, this lifting gear box for ocean platform includes mounting bracket 1 to and set up in the lifting gear box body 2 of mounting bracket 1, lifting gear box body 2 includes climbing gear assembly 21, first NGW planetary wheel structure 22, second NGW planetary wheel structure 23, torque arm 24 and actuating mechanism 25, climbing gear assembly 21 includes link 211 and the gear 212 that climbs that sets up in link 211 rotatably, mounting bracket 1 is connected with link 211; the first NGW planetary gear structure 22 comprises a first planet carrier 221, a first central shaft and a first inner gear ring 222, the first planet carrier 221 is rotatably connected to the first central shaft, and the first planet carrier 221 is fixedly connected with the climbing gear 212; the second NGW planetary gear structure 23 includes a second planet carrier 231, a second central shaft and a second ring gear 232, the second planet carrier 231 is rotatably connected to the second central shaft, and the first central shaft is fixedly connected to the second planet carrier 231; the torque arm 24 is used for connecting the first ring gear 222 and the second ring gear 232, and the torque arm 24 is connected with the mounting frame 1; the driving mechanism 25 can drive the second central shaft to rotate; the climbing gear assembly 21, the first NGW planetary wheel structure 22, the torque arm 24, the second NGW planetary wheel structure 23 and the driving mechanism 25 are sequentially arranged from top to bottom along the height direction of the mounting frame 1.

This elevating gear box for ocean platform, as shown in fig. 1-3, the drive assembly drives the rotation of second center pin for second NGW planet wheel structure 23 moves and drives second planet carrier 231 to rotate around the second center pin, second planet carrier 231 and first center pin fixed connection, thus drive the rotation of first center pin, make first NGW planet wheel structure 22 move and drive first planet carrier 221 to rotate around the first center pin, first planet carrier 221 and climbing gear 212 fixed connection who climbs gear assembly 21, thus drive climbing gear 212 rotation and output power. By arranging the climbing gear assembly 21, the first NGW planetary gear structure 22, the torque arm 24, the second NGW planetary gear structure 23 and the driving mechanism 25 in sequence from top to bottom along the height direction of the mounting frame 1, wherein the torque arm 24 is used for connecting the first inner gear ring 222 and the second inner gear ring 232, the torque arm 24 is connected with the mounting frame 1, and the mounting frame 1 is further connected with the connecting frame 211, so that the span of the distance between two connecting positions of the lifting gear box body and the mounting frame along the height direction of the mounting frame is large compared with the prior art, the torque force transmitted to the connecting part of the torque arm 24 and the mounting frame 1 is reduced, the requirement on the connecting strength between the torque arm 24 and the mounting frame 1 is reduced, the risk of torsional deformation of the mounting frame 1 is effectively reduced, the reliability of the lifting gear box for the ocean platform is improved, the number of connecting pieces for connecting the torque arm 24 and the mounting frame 1 can be effectively reduced, the volume of the torque arm 24 is reduced, and the cost is saved.

As shown in fig. 1 and 4, the mounting bracket 1 is provided with two spacing grooves 11 at intervals, the spacing grooves 11 extend from bottom to top along the height direction of the mounting bracket 1, the torque arm 24 is provided with two first connecting portions 241, the two first connecting portions 241 are in one-to-one correspondence with the two spacing grooves 11, and the first connecting portions 241 can be inserted into the spacing grooves 11. It can be understood that the first connecting portion 241 is inserted into the limiting groove 11 from bottom to top to define the relative position between the mounting bracket 1 and the torque arm 24 along the height direction of the mounting bracket 1, and then the torque arm 24 is connected to the mounting bracket 1 by a connecting member to completely fix the relative position between the mounting bracket 1 and the torque arm 24 along the height direction. In the present embodiment, the mounting bracket 1 and the torque arm 24 are connected by bolts as an example.

As shown in fig. 1, 2 and 4, the lifting gear box for the ocean platform further includes an adjusting assembly 3, and the adjusting assembly 3 is used for defining the relative position between the first connecting portion 241 and the side wall of the limiting groove 11. Specifically, the first connecting portion 241 is inserted into the limiting groove 11 from bottom to top, the relative position relationship between the mounting bracket 1 and the torque arm 24 is defined along the height direction of the mounting bracket 1, and then the relative position between the first connecting portion 241 and the side wall of the limiting groove 11 is defined by the adjusting assembly 3, so that the relative position relationship between the mounting bracket 1 and the torque arm 24 is completely defined, and the torque arm 24 is further conveniently connected to the mounting bracket 1 through the connecting member; it can be understood that the first connecting portion 241 and the limiting groove 11 are in clearance fit, so that the mounting bracket 1 can be assembled with torsion arms 24 of different specifications, and the use performance of the mounting bracket 1 is enhanced.

Specifically, as shown in fig. 1, 2, 4 and 5, the adjusting assembly 3 includes an adjusting plate 31 and a connecting plate 32 detachably connected to the mounting frame 1, the adjusting plate 31 is inserted into a gap between a sidewall of the limiting groove 11 and the first connecting portion 241, and two ends of the adjusting plate 31 along the height direction of the mounting frame 1 respectively abut against a bottom wall of the limiting groove 11 and the connecting plate 32. So configured, to realize that the relative position between the first connecting portion 241 and the side wall of the limiting groove 11 is defined by the adjusting plate 31, it can be understood that the adjusting plate 31 and the side walls of the first connecting portion 241 and the limiting groove 11 are both in contact fit or interference fit.

More specifically, in the present embodiment, as shown in fig. 1, each first connection portion 241 corresponds to two adjustment assemblies 3, and the two adjustment assemblies 3 are spaced at two sides of the first connection portion 241 along the length direction of the first connection portion 241.

Specifically, as shown in fig. 1, 2, 4 and 5, the torsion arm 24 further includes a second connecting portion 242 and a third connecting portion 243 connected thereto, the second connecting portion 242 is detachably connected to the first ring gear 222, the third connecting portion 243 is detachably connected to the second ring gear 232, and the two first connecting portions 241 are uniformly and intermittently connected to the outer circumferential surface of the second connecting portion 242. This arrangement enables connection of the first ring gear 222 and the second ring gear 232 via the torque arm 24.

Further specifically, the first connecting portion 241, the second connecting portion 242, and the third connecting portion 243 of the torsion arm 24 are integrally molded. With this arrangement, the torsion arm 24 has good structural strength.

As shown in fig. 1 and 2, the mounting bracket 1 is provided with a first mounting hole 12, a second mounting hole 13, and a third mounting hole 14 at intervals along a height direction, the connection bracket 211 includes a first connection bracket 2111 and a second connection bracket 2112, the first connection bracket 2111 and the second connection bracket 2112 are both rotatably connected to the climbing gear 212 and are respectively located at two axial ends of the climbing gear 212, the first connection bracket 2111 is inserted into the first mounting hole 12 and detachably connected to the mounting bracket 1, the second connection bracket 2112 is inserted into the second mounting hole 13 and detachably connected to the mounting bracket 1, and the first ring gear 222 is inserted into the third mounting hole 14. Specifically, the first connection frame 2111 is rotatably connected to the climbing gear 212 through a bearing, and the second connection frame 2112 is rotatably connected to the climbing gear 212 through a bearing. It can be understood that when the first connection portion 241 is inserted into the limiting groove 11 and inserted into position, the first connection frame 2111 is inserted into the first mounting hole 12, the second connection frame 2112 is inserted into the second mounting hole 13, and the first internal gear 222 is inserted into the third mounting hole 14.

As shown in fig. 1 to 3, the first NGW planetary gear structure 22 further includes a first sun gear 224 fixedly disposed on the first central shaft, and a plurality of first planetary gears 223 circumferentially disposed on the first carrier 221 at intervals, and the first planetary gears 223 are engaged with the first ring gear 222 and the first sun gear 224.

As shown in fig. 1 to 3, the second NGW planetary gear structure 23 further includes a second sun gear 234 fixedly disposed on the second central shaft, and a plurality of second planetary gears 233 circumferentially disposed on the second planet carrier 231 at intervals, where the second planetary gears 233 are engaged with the second ring gear 232 and the second sun gear 234.

As shown in fig. 1 to 3, the driving mechanism 25 includes a driving motor 251 and a gear transmission mechanism 252, an output shaft of the driving motor 251 is fixedly connected with an input shaft of the gear transmission mechanism 252, and an output shaft of the gear transmission mechanism 252 is fixedly connected with the second central shaft. Specifically, as shown in fig. 1 to 3, an output shaft of the driving motor 251 is fixedly connected to an input shaft of the gear transmission mechanism 252, the output shaft of the driving motor 251 drives the input shaft of the gear transmission mechanism 252 to rotate around its central axis, so that the second sun gear 234 rotates, each second planet wheel 233 is engaged with both the second ring gear 232 and the second sun gear 234, so as to drive the second planet carrier 231 to rotate, the second planet carrier 231 is fixedly connected to the first central shaft, so as to drive the first sun gear 224 fixedly connected to the first central shaft to rotate, each first planet wheel 223 is engaged with both the first ring gear 222 and the first sun gear 224, so as to drive the first planet carrier 221 to rotate, and the first planet carrier 221 is fixedly connected to the climbing gear 212, so as to drive the climbing gear 212 to rotate and output power. Specifically, in the present embodiment, the gear transmission mechanism 252 is a four-stage gear transmission mechanism.

Wherein, the quantity of lifting gear box body 2 is a plurality of, and a plurality of lifting gear box body 2 array distribute. In the present embodiment, the mounting bracket 1 is provided with one lifting gear box body 2 as an example.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. 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 claims of the present invention.

Claims

1. Lifting gear box for platform, its characterized in that, including mounting bracket (1), and set up in lifting gear box body (2) of mounting bracket (1), lifting gear box body (2) include:

the climbing gear assembly (21) comprises a connecting frame (211) and a climbing gear (212) rotatably arranged on the connecting frame (211), and the mounting frame (1) is connected with the connecting frame (211);

a first NGW planet structure (22), the first NGW planet structure (22) comprising a first planet carrier (221), a first central shaft and a first inner gear ring (222), the first planet carrier (221) being rotationally connected to the first central shaft, and the first planet carrier (221) being fixedly connected to the climbing gear (212);

a second NGW planetary gear structure (23), the second NGW planetary gear structure (23) comprising a second planet carrier (231), a second central shaft and a second ring gear (232), the second planet carrier (231) being rotationally connected to the second central shaft, and the first central shaft being fixedly connected to the second planet carrier (231);

a torque arm (24), wherein the torque arm (24) is used for connecting the first ring gear (222) and the second ring gear (232), and the torque arm (24) is connected with the mounting frame (1);

a driving mechanism (25), wherein the driving mechanism (25) can drive the second central shaft to rotate;

the climbing gear assembly (21), the first NGW planetary gear structure (22), the torque arm (24), the second NGW planetary gear structure (23) and the driving mechanism (25) are sequentially arranged from top to bottom along the height direction of the mounting frame (1).

2. The lifting gearbox for the ocean platform according to claim 1, wherein the mounting bracket (1) is provided with two limiting grooves (11) at intervals, the limiting grooves (11) extend from bottom to top along the height direction of the mounting bracket (1), the torque arm (24) is provided with two first connecting portions (241), the two first connecting portions (241) are arranged in one-to-one correspondence with the two limiting grooves (11), and the first connecting portions (241) can be inserted into the limiting grooves (11).

3. The offshore platform lifting gearbox of claim 2, further comprising an adjustment assembly (3), the adjustment assembly (3) being adapted to define a relative position between the first connection portion (241) and the side wall of the restraint slot (11).

4. The lifting gearbox for the ocean platform according to claim 3, wherein the adjusting assembly (3) comprises an adjusting plate (31) and a connecting plate (32) detachably connected to the mounting frame (1), the adjusting plate (31) is inserted into a gap between a side wall of the limiting groove (11) and the first connecting portion (241), and two ends of the adjusting plate (31) in the height direction of the mounting frame (1) abut against a bottom wall of the limiting groove (11) and the connecting plate (32) respectively.

5. The lifting gearbox for ocean platforms according to claim 2, wherein the torque arm (24) further comprises a second connecting portion (242) and a third connecting portion (243) connected with each other, the second connecting portion (242) is detachably connected with the first inner ring gear (222), the third connecting portion (243) is detachably connected with the second inner ring gear (232), and the two first connecting portions (241) are uniformly and alternately connected with the outer peripheral surface of the second connecting portion (242).

6. The lifting gearbox for the offshore platform according to any one of claims 1 to 5, wherein the mounting bracket (1) is provided with a first mounting hole (12), a second mounting hole (13) and a third mounting hole (14) at intervals along a height direction, the connecting frame (211) comprises a first connecting frame (2111) and a second connecting frame (2112), the first connecting frame (2111) and the second connecting frame (2112) are both rotatably connected with the climbing gear (212) and are respectively located at two ends of the climbing gear (212) along an axial direction, the first connecting frame (2111) is plugged in the first mounting hole (12) and is detachably connected with the mounting bracket (1), the second connecting frame (2112) is plugged in the second mounting hole (13) and is detachably connected with the mounting bracket (1), and the first ring gear (222) is plugged in the third mounting hole (14).

7. A lifting gearbox according to any of the preceding claims 1-5, characterised in that the first NGW planet wheel arrangement (22) further comprises a first sun wheel (224) fixedly arranged on the first central shaft, a plurality of first planet wheels (223) arranged circumferentially at intervals on the first planet carrier (221), the first planet wheels (223) meshing with both the first annulus gear (222) and the first sun wheel (224).

8. A lifting gearbox according to any of the preceding claims 1-5, characterised in that the second NGW planetary gear structure (23) further comprises a second sun gear (234) fixedly arranged in the second central shaft, a plurality of second planetary gears (233) arranged in the second planet carrier (231) at circumferential intervals, the second planetary gears (233) being in mesh with both the second annulus gear (232) and the second sun gear (234).

9. Lifting gearbox according to any of claims 1 to 5, characterised in that said drive means (25) comprises a drive motor (251) and a gear transmission (252), the output shaft of said drive motor (251) being fixedly connected to the input shaft of said gear transmission (252), the output shaft of said gear transmission (252) being fixedly connected to said second central shaft.

10. Lifting gearbox according to any of claims 1 to 5, characterised in that the number of lifting gearbox bodies (2) is multiple, and that multiple lifting gearbox bodies (2) are distributed in an array.