Rotary vehicle locking device and offshore platform crane

Abstract

The utility model provides a rotary vehicle locking device and an offshore platform crane. A rotary vehicle locking device comprises a locking base, a locking lug plate and a locking pin shaft. The locking base and the locking lug plate are installed on a lower connecting plate and an upper connecting plate of the rotary speed reducer respectively, the locking pin shaft is inserted into pin shaft holes of the locking base and the locking lug plate, and the position of the cantilever is locked by locking the positions of the locking base and the locking lug plate. The locking lug plate is connected to the upper connecting plate of the rotary speed reducer, the locking base is installed on the lower connecting plate of the rotary speed reducer, the locking pin shaft is inserted between the locking lug plate and the locking base, the locking lug plate and the locking base are fixed, then a rotary device is locked, a crane cantilever is firmly locked, and the crane cantilever is installed on an existing installation hole of a crane, so that the crane cantilever is not damaged. No new anchor point is added, the locking position can be adjusted within 360 degrees, and the crane cantilever is kept at the optimal windproof and anticorrosion position. The rotary locking device is suitable for the offshore platform crane.

Description

Technical Field

[0001] The utility model relates to the field of marine engineering crane equipment, in particular to a rotary locking device and an offshore platform crane. Background Art

[0002] Offshore platform cranes are usually installed on offshore platforms or ships and are used for cargo transfer between platforms, ships and docks. They are important equipment in marine production. Offshore platform cranes are used outdoors in the open air in a marine environment. When in operation, the wind force usually does not exceed level 6. When not in operation, they are often in strong winds. In extreme conditions, the wind speed can reach 55m / s, or about level 15, which exerts a great force on the crane cantilever. In addition, in windy weather, the offshore platform will also shake, and the shaking of the platform will also exert a great force on the crane cantilever. In order to prevent the cantilever from swinging, shaking or even rotating abnormally, the locking device of the crane cantilever has high requirements in terms of reliability, maintainability, wind resistance and corrosion resistance.

[0003] The existing slewing locking device of the offshore crane is usually realized by relying on the self-locking property of the worm gear reducer installed at the bottom of the cantilever.

[0004] The self-locking property of the worm gear reducer is used to lock the position of the cantilever, which has low reliability. It may sway and rotate in severe windy environments, and in severe cases, the slewing reducer may be damaged, posing a serious safety hazard to the platform equipment. Summary of the invention

[0005] The utility model aims to solve the problem that the existing slewing locking device of the offshore crane is unreliable and easy to damage, and provides a slewing locking device with high reliability and stable performance, which can keep the crane cantilever in the best windproof and anti-corrosion position.

[0006] The solution adopted by the utility model to solve the technical problem is:

[0007] A slewing car locking device comprises a locking base, a locking ear plate and a locking pin. The locking base is mounted on the lower plane of the lower connecting plate of the slewing reducer, and a first pin hole is arranged at the front part thereof, which is used to lock the position of the lower connecting plate; the locking ear plate is mounted on the upper plane of the upper connecting plate of the slewing reducer, and a second pin hole is arranged at the front part thereof, which is used to lock the position of the upper connecting plate; the locking pin is inserted into the first pin hole of the locking base and the second pin hole of the locking ear plate, which is used to connect the locking base and the locking ear plate, and lock the position of the cantilever.

[0008] Positive effects:

[0009] The utility model connects the locking ear plate on the upper connecting plate of the slewing reducer, installs the locking base on the lower connecting plate, and inserts the locking pin shaft between the locking ear plate and the locking base to fix the locking ear plate and the locking base, thereby locking the slewing device. The utility model has a simple structure, can reliably lock the crane cantilever, can be installed on the existing mounting holes of the crane, does not add new anchor points, and is easy to install. Since the mounting holes on the upper and lower connecting plates of the crane are distributed in a range of 360°, the locking position can be adjusted in a range of 360°, and the crane cantilever is kept in the best windproof and anti-corrosion position, which is suitable for use as a slewing locking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model when the vehicle is not locked;

[0011] Figure 2 This is a schematic diagram of the main structure of the utility model in the locked state;

[0012] Figure 3 This is a schematic diagram of the structure of the utility model when the vehicle is not locked;

[0013] Figure 4 This is a schematic diagram of the structure of the utility model in a locked state from a top view;

[0014] Figure 5 This is a schematic diagram of the utility model being installed on a crane.

[0015] In the figure:

[0016] 10. Lock the base,

[0017] 11. The first pin hole,

[0018] 12. The first sleeve,

[0019] 13. Temporary storage hole,

[0020] 14. First bolt assembly;

[0021] 20. Lock the ear plate,

[0022] 21. Second pin hole,

[0023] 22. Second bushing,

[0024] 23. Second bolt assembly;

[0025] 30. Locking pin,

[0026] 31.O-type safety pin,

[0027] 32. Handle;

[0028] 40. Crane column assembly,

[0029] 41. Lower connecting plate,

[0030] 42. Upper connecting plate. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] Combination Figure 1 , 2 , 3, 4, 5, a slewing car locking device comprises a locking base 10, a locking ear plate 20 and a locking pin 30. A slewing reducer is arranged on the crane column assembly 40, and an upper connecting plate 42 and a lower connecting plate 41 are arranged on the upper and lower planes of the slewing reducer respectively, the locking base 10 is installed on the lower connecting plate 41 of the slewing reducer, and the locking ear plate 20 is installed on the upper connecting plate 42 of the slewing reducer; a first pin hole 11 and a second pin hole 21 are arranged on the locking base 10 and the locking ear plate 20 respectively, and the locking pin 30 is inserted into the first pin hole 11 and the second pin hole 21, and the position of the locking base 10 and the locking ear plate 20 is locked by the locking pin 30, so as to realize the position locking of the crane cantilever.

[0033] Locking base 10; Figure 1 As shown, the locking base 10 is a fan-shaped strip structure, and bolt holes are arranged at the rear of the fan-shaped part for installation and fixation of the first bolt assembly 14; a first pin shaft hole 11 is provided at the front of the fan-shaped part for inserting the locking pin shaft 30. In a preferred embodiment, a first sleeve 12 is provided in the first pin shaft hole 11 for easy processing, and the locking pin shaft 30 is inserted into the first sleeve 12, and the height of the first sleeve 12 is greater than the thickness of the first pin shaft hole 11, which extends the connection length of the locking pin shaft 30; the first sleeve 12 and the locking base 10 are connected by welding or bolts to make the connection between the locking pin shaft 30 and the locking base 10 more secure. During installation, first select the cantilever locking position according to the on-site wind protection, corrosion protection and use of the crane. According to the cantilever locking position, determine the installation position of the locking device. The lower connecting plate 41 of the slewing reducer usually has mounting holes evenly distributed along the circumference. According to the selected locking position, a suitable mounting hole is selected on the lower connecting plate 41 of the slewing reducer, and corresponding bolt holes are provided on the locking base 10. The locking base 10 is installed on the selected mounting hole of the lower connecting plate 41 of the slewing reducer through the first bolt assembly 14.

[0034] Preferably, the locking base 10 is assembled using the original mounting holes on the lower connecting plate 41 of the reducer, without adding new anchor points or changing the original state of the crane, making installation easier.

[0035] Preferably, three mounting holes are selected on the lower connecting plate 41 of the reducer, and the locking base 10 uses three bolt holes to install bolts to form a triangular stable structure, making the structure more solid.

[0036] Preferably, a temporary storage hole 13 is provided beside the first pin hole 11 of the locking base 10 for temporarily storing the locking pin 30. When the locking pin 30 is removed in the unlocked state, it is placed in the temporary storage hole 13 for storage and standby to prevent the locking pin 30 from moving around.

[0037] The locking ear plate 20 is a fan-shaped strip structure, which is installed on the upper plane of the upper connecting plate 42 of the rotary reducer. The upper connecting plate 42 of the rotary reducer usually has mounting holes evenly distributed along the circumference. According to the installation position of the locking base 10, a suitable mounting hole is selected on the upper connecting plate 42 of the rotary reducer, and correspondingly, a corresponding bolt hole is set at the rear of the locking ear plate 20, and the locking ear plate 20 is installed on the upper plane of the upper connecting plate 42 through the second bolt assembly 23. The front part of the locking ear plate 20 is provided with a second pin hole 21 for inserting the locking pin 30. In this embodiment, a second shaft sleeve 22 is set in the second pin hole 21 for easy processing. The locking pin 30 is inserted into the second shaft sleeve 22, and the height of the second shaft sleeve 22 is greater than the thickness of the second pin hole 21, which increases the connection length of the locking pin 30; the second shaft sleeve 22 and the ear plate 20 are connected by welding or bolts, which is used to make the connection between the locking pin 30 and the locking ear plate 20 more secure.

[0038] Preferably, the locking ear plate 20 is installed using the original installation holes of the connecting plate 42 on the reducer, without adding new anchor points or changing the original state of the crane, making installation easier.

[0039] Preferably, three mounting holes are selected on the upper connecting plate 42 of the reducer, and the locking ear plate 20 uses three bolt holes to install bolts, forming a triangular stable structure, making the installation more secure.

[0040] Preferably, the gap between the second sleeve 22 on the locking ear plate 20 and the first sleeve 12 on the locking base 10 is 5-10 mm, which is convenient for assembly.

[0041] The locking pin 30 is a stepped shaft made of high-toughness metal with a diameter of 30-60 mm. The head is provided with a shoulder for clamping the second pin hole 21. The end is tapered for easy insertion into the pin hole. The head is provided with a handle 32 for easy operation. The end is provided with a pin hole for inserting a fixing pin.

[0042] Preferably, the fixing pin adopts an O-ring safety pin 31. After the pin is inserted, the O-ring is turned over and sleeved on the end of the locking pin shaft 30 to prevent the pin shaft from falling off and make the locking pin shaft 30 more securely fixed.

[0043] Optionally, a plurality of locking bases 10 are installed on the reducer lower connecting plate 41 to allow the crane cantilever to be locked in different positions according to different needs.

[0044] The working process of this embodiment:

[0045] When the crane is in a non-locked state, the locking pin 30 is stored in the temporary storage hole 13 .

[0046] When the crane completes the operation and needs to be locked, remove the O-shaped safety pin 31 at the tail of the locking pin 30, use the handle 32 at the head of the locking pin 30 to take the locking pin 30 out of the temporary storage hole 13, turn the crane rotation drive hand wheel to rotate the cantilever to the locking position.

[0047] When the two pin holes on the locking base 10 and the locking ear plate 20 are aligned, the locking pin 30 is inserted from top to bottom, and finally the O-shaped safety pin 31 is inserted at the end of the locking pin 30, and the O-ring is turned over and sleeved on the end of the locking pin 30 to complete the vehicle locking operation.

[0048] When the crane is activated, the O-shaped safety pin 31 at the tail of the locking pin shaft 30 is pulled out, the locking pin shaft 30 is lifted up, and is placed in the temporary storage hole 13, and then the O-shaped safety pin 31 is inserted, and the crane can work normally.

[0049] An offshore platform crane includes a column, a slewing device, a cantilever device, a wire rope hoisting device, a hook and an electric control device;

[0050] A rotary locking device is arranged on the rotary device.

Claims

1. A slewing car locking device, wherein a slewing reducer is arranged on a crane column assembly (40), and an upper connecting plate (42) and a lower connecting plate (41) are respectively arranged on the upper and lower planes of the slewing reducer, characterized in that: It includes a locking base (10), a locking ear plate (20) and a locking pin (30): The locking base (10) is mounted on the lower plane of the lower connecting plate (41) of the rotary reducer through a first bolt assembly (14); the front portion of the locking base (10) is provided with a first pin hole (11) for locking the position of the lower connecting plate (41); The locking ear plate (20) is mounted on the upper plane of the upper connecting plate (42) of the rotary reducer through a second bolt assembly (23), and has a second pin hole (21) at the front for locking the position of the upper connecting plate (42); The locking pin (30) is inserted into the first pin hole (11) of the locking base (10) and the second pin hole (21) of the locking ear plate (20) and is used to connect the locking base (10) and the locking ear plate (20) to lock the position of the cantilever.

2. A rotary car locking device according to claim 1, characterized in that: A temporary storage hole (13) is provided beside the first pin shaft hole (11) of the locking base (10) for temporarily storing the locking pin shaft (30).

3. A rotary car locking device according to claim 1, characterized in that: The locking base (10) and the locking ear plate (20) are arranged with bolt holes at the rear, which correspond to the original mounting holes of the upper and lower connecting plates of the rotary reducer. The original mounting holes on the upper and lower connecting plates of the reducer are used for assembly without adding new anchor points, making the installation easier.

4. A rotary car locking device according to claim 1, characterized in that: The locking base (10) and the locking ear plate (20) are both provided with three bolt holes for mounting bolts, so as to form a triangular stable structure, thereby making the structure more solid.

5. The rotary car locking device according to claim 1, characterized in that: An O-shaped safety pin (31) is provided at the end of the locking pin shaft (30) for making the locking pin shaft (30) more firmly fixed.

6. A rotary car locking device according to claim 1, characterized in that: A first sleeve (12) is disposed in the first pin hole (11), the locking pin (30) is inserted into the first sleeve (12), and the height of the first sleeve (12) is greater than the thickness of the first pin hole (11), thereby extending the connection length of the locking pin (30); A second sleeve (22) is disposed in the second pin hole (21), the locking pin (30) is inserted into the second sleeve (22), and the height of the second sleeve (22) is greater than the thickness of the second pin hole (21), thereby increasing the connection length of the locking pin (30); The gap between the first shaft sleeve (12) and the second shaft sleeve (22) is 5-10 mm, which facilitates assembly.

7. A rotary car locking device according to claim 1, characterized in that: The locking pin shaft (30) is a stepped shaft, with a shaft shoulder provided at the head for clamping the second pin shaft hole (21), and a handle (32) provided at the head for easy operation; a pin hole is provided at the end for inserting an O-type safety pin (31) to prevent the locking pin shaft (30) from falling off.

8. The rotary car locking device according to claim 1, characterized in that: A plurality of locking bases (10) are mounted on the reducer lower connecting plate (41) and are used to lock the crane cantilever at different positions according to different needs.

9. An offshore platform crane, comprising a column, a slewing device, a cantilever device, a wire rope hoisting device, a hook and an electric control device; characterized in that: A rotary vehicle locking device according to any one of claims 1 to 8 is arranged on the rotary device.

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