CN113651247B

CN113651247B - Gantry crane

Info

Publication number: CN113651247B
Application number: CN202110979228.XA
Authority: CN
Inventors: 潘海伟; 潘学剑; 王叶青; 袁浩; 潘雄; 潘海杰; 李旭光; 肖洋; 王先表; 朱志松; 王海平; 崔吉
Original assignee: Taizhou Wuzhou Shipbuilding Industry Co ltd
Current assignee: Taizhou Wuzhou Shipbuilding Industry Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2023-07-14
Anticipated expiration: 2041-08-25
Also published as: CN113651247A

Abstract

The invention provides a gantry lifting device, which comprises at least two slipways arranged side by side, wherein each slipway is provided with a lifting component; the hoisting component comprises two crane rails arranged on the slipway in parallel and a crane connected to the two crane rails in a sliding manner; a transition track is arranged between two adjacent slipways, and two ends of the transition track respectively extend into the two slipways and are intersected with two crane tracks in the slipways; the transition assembly is arranged at the bottom of the crane and used for driving the crane to move along the transition track. Through removing the lifting machine on the adjacent slipway for replace renting heavy tracked crane, have the advantage that requires lower to place and ground, it is comparatively convenient to use, moreover, use above-mentioned mode to be used for accomplishing the equipment of jar body and hull, only need the cost of labor of expenditure response, do not need heavy tracked crane's renting cost, can reduce liquefied petroleum gas ship's manufacturing cost to a great extent.

Description

Gantry crane

Technical Field

The invention relates to a gantry crane, in particular to a gantry crane device.

Background

Liquefied petroleum gas ship, abbreviated as LPG ship, refers to a ship dedicated to transporting liquefied petroleum gas. In order to shorten the production cycle of the lpg ship, the hull structure is generally constructed separately from the tank structure. And after the hull structure and the tank structure are built, the heavy crawler crane is rented to hoist the tank to the hull for installation. However, the method not only needs a large enough field, but also has higher requirement on the foundation of the hoisting area and is inconvenient to use.

Disclosure of Invention

In view of the above, the present invention aims to provide a gantry crane apparatus, which has the advantages of low requirements for the ground and foundation and convenient use.

In order to solve the technical problems, the technical scheme of the invention is as follows: the gantry lifting device comprises at least two slipways which are arranged side by side, and each slipway is provided with a lifting component; the hoisting assembly comprises two crane rails arranged on the slipway in parallel and a crane connected to the two crane rails in a sliding manner; a transition track is arranged between two adjacent slipways, and two ends of the transition track respectively extend into the two slipways and cross with two crane tracks in the slipways; the transition assembly is arranged at the bottom of the crane and used for driving the crane to move along the transition track.

Through the technical scheme, for convenience in description, two adjacent slipways are named as first slipways and second slipways respectively, when a tank body is required to be hoisted to the inside of a ship body in the first slipway, a crane on the second slipway is controlled to move along crane rails until the crane is opposite to transition rails between the first slipway and the second slipway, and then the crane is controlled to move along the transition rails through a transition assembly until the crane is moved into the first slipway, and pulleys on two sides of the crane are connected with the two crane rails on the first slipway one by one. At this time, two cranes are arranged in the first slipway, so that the tank body can be conveniently hoisted, and the tank body is mounted on the ship body. Through removing the lifting machine on the adjacent slipway for replace renting heavy tracked crane, have the advantage that requires lower to place and ground, it is comparatively convenient to use, moreover, use above-mentioned mode to be used for accomplishing the equipment of jar body and hull, only need the cost of labor of expenditure response, do not need heavy tracked crane's renting cost, can reduce liquefied petroleum gas ship's manufacturing cost to a great extent.

Preferably, the transfer assembly comprises a lifting mechanism and a transfer mechanism, wherein the lifting mechanism is used for lifting the crane, so that the crane and the crane rail are mutually separated, and the transfer mechanism is used for driving the crane to move along the transition rail after the crane and the crane rail are separated.

Through the technical scheme, when the crane moves to be opposite to the transition track up and down along the crane track, the crane is jacked up through the jacking mechanism, so that the crane and the crane track are mutually separated, and then the crane is driven to move along the transition track through the transfer mechanism, so that the crane enters an adjacent slipway, and the assembly of the tank body and the ship body is completed.

Preferably, the jacking mechanism comprises a jacking oil cylinder, the cylinder body of the jacking oil cylinder is used for supporting the slipway, and the piston rod of the jacking oil cylinder is used for supporting the crane.

Through the technical scheme, when the lifting oil cylinder is used, the lifting oil cylinder is placed between the crane and the slipway, and the piston rod of the lifting oil cylinder is controlled to extend. When the cylinder body of the jacking cylinder is in contact with the top surface of the slipway and the piston rod of the jacking cylinder is in contact with the bottom of the crane, the jacking cylinder starts to jack up the crane upwards, so that the crane and the crane rail are separated from each other.

Preferably, a piston rod of the jacking oil cylinder is hinged to the lifting machine, a lifting hook is arranged on a cylinder body of the jacking oil cylinder, a lifting ring is arranged at the bottom of the lifting machine, and the lifting hook can be hung on the lifting ring.

Through the technical scheme, the jacking oil cylinder is hinged to the crane, so that the jacking oil cylinder does not need to be manually carried, and the use process of the jacking oil cylinder is more convenient.

When the lifting cylinder is needed, the lifting hook is firstly controlled to be separated from the lifting ring, then the lifting cylinder is controlled to rotate downwards around the hinge point, so that the lifting cylinder is rotated to a vertical state, then the piston rod of the lifting cylinder is controlled to extend, the cylinder body of the lifting cylinder is gradually close to the top surface of the slipway, and when the cylinder body of the lifting cylinder is contacted with the top surface of the slipway, the lifting cylinder starts to lift the crane upwards, so that the crane and the crane rail are separated from each other.

Preferably, the transfer mechanism comprises a track trolley for supporting the crane and a transfer crane for pulling the crane, wherein a limit ring groove for clamping the transition track is formed in a wheel of the track trolley, and a guy rope of the transfer crane is connected to the crane.

According to the technical scheme, after the lifting cylinder is used for controlling the crane to be separated from the crane track, the track trolley is installed below the crane, then the piston rod of the lifting cylinder is controlled to be shortened, so that the crane gradually falls and contacts with the track trolley, and then the crane can be pulled to move along the transition track through the rotating crane. The rail trolley is placed below the crane, so that the friction force during transferring of the crane can be effectively reduced, and the transferring process of the crane is more convenient. The wheels of the trolley are provided with limiting ring grooves which can be matched with the transition rail so as to limit and guide the movement of the crane.

Preferably, a transfer platform is arranged between two adjacent slipways, a mounting groove is formed in the transfer platform, the transition track is arranged at the bottom of the mounting groove, and wheels of the track trolley can extend into the mounting groove.

Through the technical scheme, in the process of using the transfer mechanism to drive the crane to move along the transition track, wheels of the trolley extend into the mounting groove. In the process, the mounting groove can limit and guide the rail trolley, so that the rail trolley is not easy to deviate.

Preferably, an elastic protective film is arranged at the notch of the mounting groove, and the top surface of the elastic protective film is flush with the top surface of the transfer platform.

Through the technical scheme, the elastic protective film is arranged at the notch of the mounting groove, so that impurities can be prevented from entering the mounting groove, and the moving process of the crane is not easy to influence. When the crane moves along the transition track, the crane can squeeze the elastic protective film below, so that the elastic protective film below deforms and is tightly attached to the surface of the transition track. Meanwhile, the deformed elastic protective film can enter the inside of the limiting ring groove and cling to the inner groove wall of the limiting ring groove. In the process, the elastic protective film can scrape off impurities attached to the inner wall of the limiting ring groove, so that the movement of the crane is not easy to influence. When the crane moves away from above the deformed elastic protective film, the elastic protective film recovers deformation and bounces impurities above the elastic protective film, so that the movement of the crane is not easily affected.

Preferably, the top of the elastic protective film is provided with a plurality of exhaust holes in a penetrating way.

Through the technical scheme, when the crane moves along the transition track, the crane can divide the mounting groove into two chambers which are not communicated with each other. For convenience of description, a chamber close to the first slipway is named a first chamber, and a chamber close to the second slipway is named a second chamber. When the crane moves from the second slipway to the first slipway, the space in the first chamber is gradually reduced, and the air in the first chamber is discharged through the exhaust holes to blow away the impurities at the top of the elastic protective film, so that the crane can move more smoothly. Meanwhile, the space in the second cavity is gradually increased, and external air enters the second cavity through the exhaust holes, so that deformation of the elastic protective film can be recovered more quickly.

Preferably, a plurality of supporting blocks are arranged in the mounting groove, and the supporting blocks are uniformly distributed along the length direction of the mounting groove; the mounting groove bottom and the support block are provided with sliding grooves at opposite positions, a support spring is arranged in the sliding grooves, the support block is connected in the sliding grooves in a sliding manner, and the bottom of the support block is connected with the top of the support spring.

Through above-mentioned technical scheme, the supporting shoe is used for supporting the elastic protection film for the elastic support film is difficult for sinking into the mounting groove, and the impurity is difficult for stopping at the top of elastic support film.

Preferably, a groove is formed in the inner side wall of the sliding groove, a rotating shaft is rotatably arranged in the groove, the rotating shaft is arranged in the vertical direction, a stop block is arranged at the side wall of the rotating shaft and can rotate left and right along with the rotating shaft, a return spring is arranged at the inner groove wall of the groove and connected with the stop block, and the stop block is pushed out of the groove by the return spring through elasticity so as to limit the support block to move downwards;

the stopper is provided with a magnetic block, a magnetic ring is coaxially arranged in the wheel of the track trolley, and when the track trolley is close to the stopper, the magnetic ring can pull the stopper into the groove through the magnetic block.

Through the technical scheme, when the crane is not close yet, the reset spring drives the stop block to extend into the groove through elasticity for limiting the support block to move downwards, so that the support block can carry out more effective support on the elastic protective film, and impurities are not easy to stay at the top of the elastic protective film. When the crane approaches, the attraction force between the magnetic ring and the magnetic block is gradually increased, and the magnetic ring drives the stop block to gradually enter the groove through the magnetic block. When the stop block completely enters the groove, the limiting effect of the stop block on the support block disappears, and the support block can slide freely in the groove. When the track trolley is close to the supporting block, the track trolley can press the supporting block into the sliding groove.

Drawings

FIG. 1 is a schematic diagram of an embodiment;

FIG. 2 is a partial schematic view of an embodiment;

FIG. 3 is a schematic cross-sectional view of a transfer platform.

Reference numerals: 1. a slipway; 2. a lifting assembly; 21. a crane rail; 22. a crane; 3. a transition track; 4. a transition assembly; 41. a jacking mechanism; 411. jacking the oil cylinder; 42. a transfer mechanism; 421. a rail trolley; 422. a transfer lifter; 5. a lifting hook; 6. a hanging ring; 7. a limit ring groove; 8. a transfer platform; 9. a mounting groove; 10. an elastic protective film; 11. an exhaust hole; 12. a support block; 13. a slip groove; 14. a support spring; 15. a groove; 16. a rotating shaft; 17. a stop block; 18. a return spring; 19. a magnetic block; 20. and a magnetic ring.

Detailed Description

The following detailed description of the invention is provided in connection with the accompanying drawings to facilitate understanding and grasping of the technical scheme of the invention.

The gantry lifting device comprises at least two slipways 1 which are arranged side by side, and the two adjacent slipways 1 are parallel to each other as shown in figure 1. In use, the hull and tank construction can be completed at the slipway 1.

The top of each slipway 1 is provided with a lifting component 2, and when in use, the components to be used can be lifted by the lifting component 2, so that the construction process of the ship body and the tank body is more convenient and efficient.

The hoisting assembly 2 comprises two crane rails 21 arranged side by side on the top surface of the slipway 1, and a crane 22 slidingly connected to the two crane rails 21. In use, the crane 22 is controlled to move along the crane rail 21 to hoist components in different positions.

As shown in fig. 1, 2 and 3, a transfer platform 8 is disposed between two adjacent slipways 1, and the top surface of the transfer platform 8 is flush with the top surface of the slipway 1. The top surface of the transfer platform 8 is provided with a mounting groove 9, two ends of the mounting groove 9 extend into the transfer platform 8, and the extending direction of the mounting groove 9 is mutually perpendicular to the crane rail 21. The inside of the mounting groove 9 is provided with a transition track 3, and the transition track 3 is positioned at the center of the groove bottom of the mounting groove 9. The transition track 3 intersects with two crane tracks 21 on the slipway 1.

The notch department of mounting groove 9 is provided with elastic protection film 10, and elastic protection film 10's top surface flushes with the top surface of transfer platform 8. The elastic protective film 10 can be deformed to the side of the mounting groove 9 when being pressed, and if the pressing force is large enough, the elastic protective film 10 can be closely attached to the surface of the transition rail 3. The top of the elastic protective film 10 is provided with a plurality of vent holes 11 therethrough.

The bottom of the mounting groove 9 is provided with a plurality of sliding grooves 13, and the sliding grooves 13 are uniformly distributed along the length direction of the mounting groove 9. The inside of each sliding groove 13 is provided with a supporting spring 14, the top of the supporting spring 14 is connected with a supporting block 12, and the supporting block 12 is connected in the sliding groove 13 in a sliding way. When the supporting springs 14 are in a stress balance state, the top of the supporting block 12 abuts against the bottom surface of the elastic protection film 10, so as to support the elastic protection film 10.

The inner groove wall of the sliding groove 13 is provided with a groove 15, a rotating shaft 16 is rotatably arranged in the groove 15, and the rotating shaft 16 is arranged in the vertical direction. The side wall of the rotating shaft 16 is provided with a stop block 17, and the stop block 17 can rotate along with the rotating shaft 16. A return spring 18 is arranged in the groove 15, one end of the return spring 18 is fixedly connected to the inner groove wall of the groove 15, and the other end is fixedly connected to the side wall of the stop block 17. When the return spring 18 is in a stress balance state, the stop block 17 protrudes from the notch of the groove 15, and the top of the stop block 17 abuts against the bottom of the supporting block 12 to support the supporting block 12. Inside the stopper 17 is provided a magnet 19.

The gantry crane further comprises a transition assembly 4, wherein the transition assembly 4 is arranged at the bottom of the crane 22 and is used for driving the crane 22 to move along the transition track 3.

The transfer assembly 4 includes a lifting mechanism 41 and a transfer mechanism 42, wherein the lifting mechanism 41 is used for lifting the crane 22, so that the crane 22 and the crane rail 21 are separated from each other, and the transfer mechanism 42 is used for driving the crane 22 to move along the transition rail 3 after the crane 22 and the crane rail 21 are separated.

The jacking mechanism 41 comprises a jacking cylinder 411, a piston rod of the jacking cylinder 411 is hinged to the crane 22, and a cylinder body of the jacking cylinder 411 is propped against the top surface of the slipway 1. A lifting hook 5 is arranged on the cylinder body of the jacking cylinder 411, a lifting ring 6 is arranged at the bottom of the lifting machine 22, and the lifting hook 5 can be hooked on the lifting ring 6.

The transfer mechanism 42 includes a trolley 421 to support the crane 22, and a transfer crane 422 to pull the crane 22. The wheels of the track trolley 421 are provided with limit ring grooves 7 for the transition track 3 to be clamped in, the wheels of the track trolley 421 are coaxially provided with magnetic rings 20, when the track trolley 421 is close to the stop blocks 17, the stop blocks 17 can be pulled into the grooves 15 by the magnetic rings 20 through the magnetic blocks 19, and the inhaul cable of the turning lifter 422 is connected to the lifter 22.

Of course, the above is only a typical example of the invention, and other embodiments of the invention are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the invention claimed.

Claims

1. A gantry crane, characterized by: comprises at least two slipways (1) which are arranged side by side, wherein each slipway (1) is provided with a lifting component (2); the hoisting assembly (2) comprises two crane rails (21) arranged on the slipway (1) in parallel and a crane (22) connected to the two crane rails (21) in a sliding manner; a transition track (3) is arranged between two adjacent slipways (1), and two ends of the transition track (3) respectively extend into the two slipways (1) and are intersected with two crane tracks (21) in the slipways (1); the transition assembly (4) is arranged at the bottom of the crane (22) and used for driving the crane (22) to move along the transition track (3);

a transfer platform (8) is arranged between two adjacent slipways (1), an installation groove (9) is formed in the transfer platform (8), the transition track (3) is arranged at the bottom of the installation groove (9), and wheels of the track trolley (421) can extend into the installation groove (9);

a plurality of supporting blocks (12) are arranged in the mounting groove (9), and the supporting blocks (12) are uniformly distributed along the length direction of the mounting groove (9); a sliding groove (13) is formed in the position, opposite to the supporting block (12), of the bottom of the mounting groove (9), a supporting spring (14) is arranged in the sliding groove (13), the supporting block (12) is connected in the sliding groove (13) in a sliding manner, and the bottom of the supporting block (12) is connected with the top of the supporting spring (14);

the sliding device is characterized in that a groove (15) is formed in the inner side wall of the sliding groove (13), a rotating shaft (16) is rotationally arranged in the groove (15), the rotating shaft (16) is arranged in the vertical direction, a stop block (17) is arranged at the side wall of the rotating shaft (16), the stop block (17) can rotate left and right along with the rotating shaft (16), a return spring (18) is arranged at the inner groove wall of the groove (15), the return spring (18) is connected with the stop block (17), and the return spring (18) pushes the stop block (17) out of the groove (15) through elasticity to limit the supporting block (12) to move downwards; be provided with magnetic path (19) on dog (17), be provided with magnetic ring (20) in the wheel of track dolly (421) coaxial, when track dolly (421) are close to dog (17), magnetic ring (20) accessible magnetic path (19) will dog (17) are drawn into recess (15).

2. The gantry crane of claim 1, wherein: the transition assembly (4) comprises a jacking mechanism (41) and a transfer mechanism (42), wherein the jacking mechanism (41) is used for jacking the crane (22) so that the crane (22) and the crane rail (21) are mutually separated, and the transfer mechanism (42) is used for driving the crane (22) to move along the transition rail (3) after the crane (22) and the crane rail (21) are separated.

3. A gantry crane according to claim 2, characterized in that: the lifting mechanism (41) comprises a lifting oil cylinder (411), a cylinder body of the lifting oil cylinder (411) is used for supporting the slipway (1) with the lower part, and a piston rod of the lifting oil cylinder (411) is used for supporting the crane (22) with the upper part.

4. A gantry crane according to claim 3, characterized in that: the piston rod of the jacking cylinder (411) is hinged to the lifting machine (22), a lifting hook (5) is arranged on the cylinder body of the jacking cylinder (411), a lifting ring (6) is arranged at the bottom of the lifting machine (22), and the lifting hook (5) can be hooked on the lifting ring (6).

5. A gantry crane according to claim 2, characterized in that: the transfer mechanism (42) comprises a track trolley (421) for supporting the crane (22) and a rotating crane (422) for pulling the crane (22), a limit ring groove (7) for clamping the transition track (3) is formed in a wheel of the track trolley (421), and a guy rope of the rotating crane (422) is connected to the crane (22).

6. The gantry crane of claim 1, wherein: an elastic protective film (10) is arranged at the notch of the mounting groove (9), and the top surface of the elastic protective film (10) is flush with the top surface of the transfer platform (8).

7. The gantry crane of claim 6, wherein: the top of the elastic protective film (10) is provided with a plurality of exhaust holes (11) in a penetrating way.