45m three-level telescopic trestle

Abstract

The utility model discloses a 45-meter three-level telescopic trestle which comprises a base (1), a rotary platform (2), a basic bridge frame (3), a telescopic bridge frame, a telescopic driving winch, a variable-amplitude hydraulic cylinder (6) and a landing inclined ladder frame (7), the rotary platform (2) conducts 360-degree rotary motion around the center of the base (1), the rotary platform (2) is hinged to the basic bridge frame (3) through the variable-amplitude hydraulic cylinder (6), and the landing inclined ladder frame (7) is hinged to the base bridge frame (3) through the telescopic driving winch. According to the telescopic trestle device, the longest extension distance of the trestle can reach 45 meters, after the telescopic length of the trestle device is adjusted on a platform and the trestle device is locked, the telescopic trestle device can be driven by the telescopic driving winch to stretch out and draw back, and the telescopic trestle device can be driven by the telescopic driving winch to stretch out and draw back. Maintenance personnel can pass through the trestle, and safe passing of the personnel can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of outfitting parts and relates to a 45-meter three-stage telescopic trestle bridge. Background Art

[0002] A telescopic trestle bridge is a device for boarding and leaving a ship. The design of the telescopic gangway allows it to extend when needed to meet the different distance requirements between the ship and the dock or other structures, and can be retracted when not needed to save space and facilitate storage. It ensures the safe and rapid passage of personnel.

[0003] With the development of offshore wind power and the diversification of ship types, there are many configurations on the deck, and the space on the ship's side deck is relatively limited. For such ships, if the traditional two-stage telescopic gangway is still used, it may bring installation difficulties to the manufacturer and may also affect the future use convenience of the shipowner. Summary of the Utility Model

[0004] In view of the above problems existing in the prior art, the present application provides a 45-meter three-stage telescopic trestle bridge.

[0005] The technical solution of the utility model is as follows:

[0006] A 45-meter three-stage telescopic trestle bridge includes a base, a slewing platform, a basic bridge, a telescopic bridge, a telescopic drive winch, a luffing hydraulic cylinder, and a landing inclined ladder. The slewing platform makes a 360° slewing movement around the center of the base. The slewing platform is hinged to the basic bridge through the luffing hydraulic cylinder, and the overall luffing of the trestle bridge is realized by controlling the extension and retraction of the luffing hydraulic cylinder. The telescopic drive winch is installed below the basic bridge and drives the telescopic bridge to perform telescopic movement.

[0007] As a preferred embodiment of the utility model: The base is made of marine steel plates and is welded and fixed to the hull to provide support for the trestle bridge. The base is provided with a ladder for personnel to get on and off the trestle bridge.

[0008] As a preferred embodiment of the utility model: The slewing platform is made of steel and is equipped with a slewing hydraulic winch and a slewing bearing. The number of slewing hydraulic winches is two and they are symmetrically installed to form a couple structure.

[0009] As a preferred embodiment of the utility model: The basic bridge includes a chain drive device. The chain drive device drives the output shaft electrically. A drive sprocket is installed on the output shaft, and the drive sprocket drives the telescopic bridge to perform telescopic movement.

[0010] As a preferred embodiment of the present utility model: The telescopic bridge is made of aluminum alloy. The telescopic bridge includes a primary telescopic bridge and a secondary telescopic bridge. The telescopic drive winch includes a primary telescopic drive winch and a secondary telescopic drive winch. The primary telescopic bridge completes the telescopic action through the primary telescopic drive winch installed below the fixed bridge. The secondary telescopic drive winch is installed below the primary telescopic bridge and is used to drive the secondary telescopic bridge to perform telescopic movement.

[0011] As a preferred embodiment of the present utility model: A landing inclined ladder is installed at the end of the secondary telescopic bridge. The landing inclined ladder is connected to the bridge through a hinge shaft. The landing inclined ladder is in contact with the platform deck through nylon roller wheels. The height of the nylon roller wheels can be manually adjusted, and the height adjustment range is 1m to 1.5m.

[0012] As a preferred embodiment of the present utility model: Railings and stainless steel wire meshes are installed at the edges of the foundation bridge and the telescopic bridge to prevent personnel from falling from the gangway. The lighting lamps configured on the bridge are installed at the top of the gangway handrails to ensure safety during night use.

[0013] The beneficial effects of the present utility model are:

[0014] A 45-meter three-stage telescopic trestle of the present utility model. The slewing platform is hinged to the foundation bridge through a luffing hydraulic cylinder. The overall luffing of the trestle can be achieved by controlling the telescopic movement of the luffing hydraulic cylinder. The telescopic drive winch is installed below the foundation bridge and drives the telescopic bridge to perform telescopic movement. The trestle can realize the rotary luffing telescopic movement within a certain range, can accurately lay a safe pedestrian passage between the ship and the operating platform, can prevent personnel from falling from the gangway, and thus can ensure the passage safety of the operating personnel during landing, which is convenient, reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the present utility model when fully extended;

[0016] Figure 2 It is the top view of the present utility model when fully extended;

[0017] Figure 3 It is the front view of the present utility model when retracted;

[0018] Figure 4 It is the top view of the present utility model when retracted;

[0019] Figure 5 It is a partial schematic view of the present utility model when luffed by -40 degrees;

[0020] Figure 6 It is a partial schematic view of the present utility model when luffed by 15 degrees;

[0021] Figure 7It is a structural schematic diagram of the slewing platform.

[0022] In the figure: 1 - pedestal, 2 - slewing platform, 201 - slewing bearing, 202 - slewing hydraulic winch, 3 - basic bridge frame, 401 - first-stage telescopic bridge frame, 402 - second-stage telescopic bridge frame, 501 - first-stage telescopic drive winch, 502 - second-stage telescopic drive winch, 6 - luffing hydraulic cylinder, 7 - landing inclined ladder frame. Specific implementation manner

[0023] The following combines the drawings and embodiments to specifically describe the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] As Figure 1-7 shown, a 45-meter three-stage telescopic trestle includes a pedestal 1, a slewing platform 2, a basic bridge frame 3, a telescopic bridge frame, a telescopic drive winch, a luffing hydraulic cylinder 6, and a landing inclined ladder frame 7. The slewing platform 2 makes a 360° slewing movement around the center of the pedestal 1. The slewing platform 2 is hinged to the basic bridge frame 3 through the luffing hydraulic cylinder 6, and the overall luffing of the trestle is realized by controlling the extension and retraction of the luffing hydraulic cylinder 6. The telescopic drive winch is installed below the basic bridge frame 3 and drives the telescopic bridge frame to perform telescopic movement.

[0025] The pedestal 1 is made of marine steel plates and is welded and fixed to the hull to provide support for the trestle. The pedestal 1 is provided with a ladder for personnel to get on and off the trestle; the slewing platform 2 is made of steel and is equipped with a slewing hydraulic winch 202 and a slewing bearing 201. The number of the slewing hydraulic winches 202 is two and they are symmetrically installed to form a couple structure; the basic bridge frame 3 includes a chain drive device. The chain drive device drives the output shaft electrically, and a drive sprocket is installed on the output shaft. The drive sprocket drives the telescopic bridge frame to perform telescopic movement; the material of the telescopic bridge frame is aluminum alloy. The telescopic bridge frame includes a first-stage telescopic bridge frame 401 and a second-stage telescopic bridge frame 402. The telescopic drive winch includes a first-stage telescopic drive winch 501 and a second-stage telescopic drive winch 502. The first-stage telescopic bridge frame 401 completes the telescopic action through the first-stage telescopic drive winch 501 installed below the fixed bridge frame. The second-stage telescopic drive winch 502 is installed below the first-stage telescopic bridge frame 401 and is used to drive the second-stage telescopic bridge frame 402 to perform telescopic movement.

[0026] At the end of the secondary telescopic bridge 402, a landing inclined ladder 7 is installed. The landing inclined ladder 7 is connected to the bridge by a hinge shaft. The landing inclined ladder 7 is in contact with the platform deck through nylon rollers, and the height of the nylon rollers can be manually adjusted within the range of 1 m to 1.5 m. Railings and stainless steel wire meshes are installed at the edges of the basic bridge 3 and the telescopic bridge to prevent personnel from falling from the gangway. The lighting lamps configured on the bridge are installed at the top of the gangway handrail to ensure safety during night use.

[0027] In summary, for the 45-meter three-stage telescopic trestle of the present utility model, the slewing platform is hinged to the basic bridge through a luffing hydraulic cylinder, and the overall luffing of the trestle can be achieved by controlling the telescoping of the luffing hydraulic cylinder. A driving sprocket is installed on the output shaft of the telescopic driving winch. When rotating forward and backward, the front and rear movement of the chain can be realized, driving the trestle to make a telescopic movement. The telescopic driving winch is installed below the basic bridge and drives the telescopic bridge to perform a telescopic movement, so as to realize the rotational luffing and telescopic movement of the trestle within a certain range, and a safe pedestrian passage can be accurately laid between the ship and the operating platform, preventing personnel from falling from the gangway and ensuring the passage safety of the operating personnel during landing.

[0028] Although the embodiments of the present utility model have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present utility model. For those skilled in the art, for those of ordinary skill in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to specific details.

Claims

1. A 45-meter three-stage telescopic trestle, characterized by: The invention comprises a base (1), a slewing platform (2), a basic bridge frame (3), a telescopic bridge frame, a telescopic driving winch, a variable-length hydraulic cylinder (6), and a landing inclined ladder frame (7). The slewing platform (2) performs a 360-degree slewing motion around the center of the base (1). The slewing platform (2) is hinged to the basic bridge frame (3) via a variable-length hydraulic cylinder (6). The overall variable-length of the trestle is achieved by controlling the telescopic movement of the variable-length hydraulic cylinder (6). The telescopic driving winch is installed below the basic bridge frame (3) and drives the telescopic bridge frame to perform a telescopic movement.

2. The 45-meter three-stage telescopic trestle according to claim 1 is characterized in that: The base (1) is made of marine steel plates and is welded and fixed to the hull to provide support for the pier. The base (1) is provided with a ladder for people to climb on and off the pier.

3. The 45-meter three-stage telescopic trestle according to claim 1 is characterized in that: The slewing platform (2) is made of steel and is equipped with a slewing hydraulic winch (202) and a slewing bearing (201). The number of the slewing hydraulic winches (202) is two and they are symmetrically installed to form a force couple structure.

4. The 45-meter three-stage telescopic trestle according to claim 1, characterized in that: The basic bridge frame (3) comprises a chain drive device, the chain drive device drives an output shaft electrically, the output shaft is provided with a drive sprocket, and the drive sprocket drives the telescopic bridge frame to be telescopic.

5. The 45-meter three-stage telescopic trestle according to claim 1, characterized in that: The telescopic bridge is made of aluminum alloy, and comprises a primary telescopic bridge (401) and a secondary telescopic bridge (402). The telescopic drive winch comprises a primary telescopic drive winch (501) and a secondary telescopic drive winch (502). The primary telescopic bridge (401) completes a telescopic movement through the primary telescopic drive winch (501) installed below the fixed bridge. The secondary telescopic drive winch (502) is installed below the primary telescopic bridge (401) and is used to drive the secondary telescopic bridge (402) to perform a telescopic movement.

6. The 45-meter three-stage telescopic trestle according to claim 5, characterized in that: A landing inclined ladder frame (7) is installed at the end of the secondary telescopic bridge frame (402), the landing inclined ladder frame (7) is connected to the bridge frame hinge shaft, the landing inclined ladder frame (7) is in contact with the platform deck by a nylon roller, the nylon roller is manually adjusted in height, and the range of the height adjustment is 1m to 1.5m.

7. The 45-meter three-stage telescopic trestle according to any one of claims 1 to 6, characterized in that: The edges of the basic bridge (3) and the telescopic bridge are equipped with railings and stainless steel wire mesh to prevent people from falling from the gangway. The lighting lamps configured on the bridge are installed on the top of the gangway handrails to ensure safety during nighttime use.

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