CN218477514U

CN218477514U - Device for carrying large gear in narrow area of ship

Info

Publication number: CN218477514U
Application number: CN202222782892.8U
Authority: CN
Inventors: 奚晨亮; 黄云峰; 陆书文; 祝云飞
Original assignee: Hudong Zhonghua Shipbuilding Group Co Ltd
Current assignee: Hudong Zhonghua Shipbuilding Group Co Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-02-14
Anticipated expiration: 2032-10-21

Abstract

The utility model relates to a device of narrow and small regional transport large gear of boats and ships contains two brackets, bears steel wheel and synchronous connecting rod, the bracket is two, two set up around bracket (1), connect by synchronous connecting rod, bear steel wheel and pass through the bottom and the deck face contact of bolt fastening at the bracket. The utility model discloses can carry out the motion of two directions on the deck plane, replace the rope to carry out remote transportation to large gear in constrictive cabin is inside to possess the aligning function, can effectually prevent that the gear wheel from rocking by a wide margin in handling.

Description

Device for carrying large gear in narrow and small area of ship

Technical Field

The utility model relates to a shipbuilding technical field especially relates to a device of narrow and small regional transport large gear of boats and ships.

Background

In the process of ship construction or use, the condition that the gear box is damaged frequently occurs due to improper maintenance, and the gear box needs to be repaired in time to avoid accidents. In the process of maintaining the gear box, large gears inside the gear box sometimes need to be replaced, and a complex technical problem is how to take out a damaged gearwheel from a ship body and how to convey a new gearwheel into the ship body and carry the new gearwheel to a specified installation position. The more direct method is to open a hole on the hull and directly lift the large gear out of the hole. The defects are obvious, and for projects which are stopped at wharfs or have urgent manufacturing and maintenance nodes, the hole opening efficiency of the outer plate is low, the cost is high, the workload is huge, and the influence on the project schedule and the quality of the ship body is great.

A better alternative scheme is to use the lifting opening to lift and carry large parts such as gear boxes and gears without damaging the ship body. The biggest difficulty is that large parts are moved in a cabin in a long distance, the parts, a ship body and equipment are not damaged in the carrying process, the efficiency is improved as far as possible, and the difficulty is high on ships with compact layout. For example, some ships using electric propulsion are built with the gear box embedded in the bottom deck and capped, the gear box parts cannot be directly lifted out, and the gear box parts must be lifted through a deck lifting opening, so that the large gear needs to move for a long distance on the deck plane and cross the four decks to reach the outside of the ship body.

Utility model patent 202021072701.3 discloses a mechanical equipment makes and uses large part haulage equipment among the prior art, and this equipment combines conveyer belt structure and hoisting structure, utilizes movable beam and indulges to put the electric block on the slide rail cooperation, forms hoist and mount and the regulation on the operation face, but the device is not suitable for transporting large part equipment in narrow marine engine cabin, and operation method is complicated.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing prior art, the utility model provides a boats and ships large gear handling device replaces the rope to carry out remote transportation to large gear in constrictive cabin is inside, can carry out the motion of two directions on the deck plane to possess the aligning function and prevent that the gear wheel from rocking by a wide margin in the handling.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a device for carrying large gears in a narrow area of a ship comprises two brackets, two bearing steel wheels and synchronous connecting rods, wherein the two brackets are arranged in front and back and are connected by the synchronous connecting rods, and the bearing steel wheels are fixed at the bottom of the brackets through bolts and are in contact with a deck surface;

the bracket is composed of a plurality of criss-cross support rods, a steel plate is arranged at the top of the bracket and is in a V shape, oblique supports are symmetrically arranged on two sides of the steel plate at the top of the bracket, the oblique supports are fixed on the support rods in the middle of the bracket through welding, and reinforcing ribs are transversely arranged at the lower half part of the bracket and are connected to the support rods at the bottom of the bracket through welding;

the bottom of the steel bearing wheel is provided with a wheel disc;

the synchronous connecting rod is fixed on the reinforcing rib connecting the front bracket and the rear bracket through a bolt.

Furthermore, the reinforcing ribs on each bracket have three paths.

Furthermore, the arrangement of the reinforcing ribs of the bracket is a result of three-dimensional stress structure of the gear obtained by establishing a gear diagram according to three-dimensional modeling software and importing the gear diagram into finite element software for analysis and calculation.

Furthermore, the top V-shaped steel plate of the bracket is welded and connected with the steel plate with the thickness of 20 mm.

Furthermore, two brackets are respectively arranged in front of and behind the lower part of the large gear to support the front fulcrum and the rear fulcrum of the large gear.

Furthermore, the bearing steel wheels are four groups of steel wheels which can be reversed.

Furthermore, the synchronous connecting rods are symmetrically arranged on two sides of the front bracket and the rear bracket in pairs.

Further, the connecting points of the synchronization links are located on the outer reinforcement 6 in the middle of one bracket and the inner reinforcement 6 in the middle of the other bracket.

Based on the technical scheme, the beneficial effects of the utility model are that:

1. the utility model relates to a device of narrow and small regional transport large gear of boats and ships can replace the rope to carry out remote transportation to large gear in constrictive cabin is inside.

2. The utility model relates to a device of boats and ships narrow and small regional transport large gear can carry out the motion of two directions on the deck plane, and bearing structure's V style of calligraphy structural design has automatic aligning function, can prevent that the gear wheel from making a round trip to rock in handling.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is the utility model relates to a boats and ships large gear handling device working schematic diagram.

Fig. 2 is a schematic view of the carrying device for large gears of ships of the present invention.

Fig. 3 is a schematic view of a bracket of a large gear carrier of a ship according to the present invention.

Fig. 4 is the utility model relates to a large-scale gear handling device's of boats and ships steel bearing wheel installation schematic diagram.

Fig. 5 is a schematic view of the steel bearing wheel rotation direction of the large gear carrying device for ships of the present invention.

Fig. 6 is a schematic view of the steel bearing wheel rotation direction of the large gear carrier of the ship.

Fig. 7 is a schematic view of the stress and displacement analysis of the large gear carrier of the ship of the present invention.

Fig. 8 is a schematic diagram of the stress and displacement analysis of the large gear carrying device for ships according to the present invention.

Fig. 9 is a schematic diagram of the stress and displacement analysis of the large gear carrier of the ship according to the present invention.

The reference numbers in the figures denote:

1-bracket, 2-bearing steel wheel, 3-synchronous connecting rod, 4-oblique support, 5-wheel disc, 6-reinforcing rib and C-large gear

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The utility model provides a boats and ships large gear handling device, include bracket 1, bear steel wheel 2 and synchronous connecting rod 3, the V shaped steel board of bracket 1 is formed by the welding of the thick steel sheet of 20mm to with the gear wheel direct contact who wraps the safeguard measure, directly bear the weight of gear wheel, be the most important part among the whole device. The bearing steel wheel 2 is arranged at the bottom of the bracket, is in contact with the deck surface and can be converted in two directions, so that the large gear carrying device can translate in two directions on the deck surface. The synchronous connecting rod 3 is a synchronous type for ensuring the movement of the two bearing devices which work in a matched mode in the process of carrying the large gear. The bracket 1 is divided into a front part and a rear part which are 2 respectively and respectively support a front fulcrum and a rear fulcrum of the bull gear C, the synchronous connecting rod 3 is used for connecting the front bracket 1 and the rear bracket 1, after the bracket 1 is installed on the bull gear C, in order to prevent the device from collapsing caused by the asynchronization of the front bracket and the rear bracket 1, the synchronous connecting rod 3 is used for connecting the two brackets 1, the synchronous condition of the brackets 1 is constantly noticed in the carrying process, and the synchronous connecting rod 3 is connected with the front bracket 1 and the rear bracket 1 after the device bears the bull gear. The synchronism of the carriage 1 is important because the device is not a rigid whole, it is necessary to avoid collapse caused by the unsynchronization of the front and rear carriages 1, the gearwheel C, after being mounted on the carriage 1, is connected with the front and rear parts of the trolley by the synchronizing link 3, and the device also needs to pay attention to the keeping of the synchronism of the movement of the trolley when the hoist is pulled transversely. As shown in fig. 1.

Bracket 1 is the V style of calligraphy structure at the bearing structure design at top, can prevent that gear wheel C from making a round trip to rock in handling, bracket 1's additional strengthening carries out the pertinence design after the atress analysis, and the reinforcing rib is made to the concentrated point of direction atress under bearing structure, guarantees the intensity of concentrated stress point. Considering that the big gear wheel is most likely to have a shaking trend in the transverse direction in the carrying process, three transverse reinforcing ribs 6 are designed on the lower half portion of the bracket 1, and the transverse strength is guaranteed. As shown in fig. 2-3

The steel bearing wheels 2 are designed into four groups of steel wheels which can be reversed, so that the height of the bracket 1 is ensured, and the cost is reduced. Considering the in-situ steering of the trolley, a wheel disc 5 is designed, namely when the trolley changes direction by 90 degrees, a jack is used for slightly jacking the trolley to empty the trolley, and the wheel disc 5 is turned by 90 degrees, so that the 90-degree walking reversing can be completed in a narrow cabin on the basis that the trolley does not change direction. The steel bearing wheels 2 are connected to the bottom of the bracket 1 through high-strength bolts, and the number of the steel bearing wheels is 16, so that the bracket 1 and the bull gear C on the bracket are effectively supported, and the steering function is realized. After the bracket 1 is jacked up by using a jack, the steel bearing wheel 5 is rotated by 90 degrees after the high-strength bolt connection is loosened, so that the device can be translated in the 90-degree direction of the original direction, as shown in fig. 4 to 6.

For finite element stress analysis of the bracket 1, it can be observed that stress distribution of the bracket 1 after bearing the large gear C is mainly distributed in the transverse direction and obliquely below the contact surface, so that the design of a strengthening structure is purposefully carried out during design, the inclined strut 4 is pulled at the obliquely below the contact surface, and three reinforcing ribs 6 are respectively arranged at two sides. And (3) carrying out stress and displacement analysis on the designed bracket, as shown in figures 7-9, wherein the maximum stress is less than the allowable stress, the displacement is kept in an elastic deformation range, and the simulation result shows that the device can adapt to the working environment.

Example 1

When the utility model is used, after the large gear C to be replaced is disassembled, the hoist is used for hoisting and installing protective measures, and the hoist is used for hoisting on a deck with higher layer height and far carrying distance until the position below the hoisting port of the layer; hoisting the bull gear C to the upper layer by using an upper-layer hoist; after a deck with a small floor height is reached, the large gear C of the ship needs to be transported remotely by using the large gear transporting device of the ship due to the fact that the height of the deck is not enough for hoisting and transporting the hoist, the large gear C is moved to the side of a hoisting port by the hoist, the bracket 1 is translated to the position below the large gear C, and then the large gear C is put down; moving the bull gear C by using a device, jacking the device by using a jack at a position needing to be steered, simultaneously pulling the bull gear C by using a hoist for protection, and putting down the jack to continue moving after adjusting the direction of the steel bearing wheel 2; and after moving the bull gear C to the object lifting opening of the layer, lifting the bull gear C to the upper layer by using a hoist, and finally transporting the bull gear C out of the cabin through the object lifting opening of the main deck.

The utility model discloses can replace the rope to carry out remote transportation to large gear in constrictive cabin is inside to possess the aligning function and carry out the motion of two directions on the deck plane, can effectually prevent that the gear wheel from rocking by a wide margin in the handling.

Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention can be made without departing from the spirit and scope of the present invention, and these modifications and improvements are within the spirit and scope of the present invention.

Claims

1. The device for carrying the large gear in the narrow area of the ship is characterized by comprising two brackets (1), two bearing steel wheels (2) and synchronous connecting rods (3), wherein the two brackets (1) are arranged in the front and at the back and are connected by the synchronous connecting rods (3), and the bearing steel wheels (2) are fixed at the bottoms of the brackets (1) through bolts and are in contact with the surface of a deck;

the bracket (1) is composed of a plurality of criss-cross supporting rods, a steel plate is arranged at the top of the bracket (1) and is in a V shape, oblique supports (4) are symmetrically arranged on two sides of the steel plate at the top of the bracket (1), the oblique supports (4) are fixed on the supporting rods in the middle of the bracket through welding, and reinforcing ribs (6) are transversely arranged on the lower half part of the bracket (1) and are connected to the supporting rods at the bottom of the bracket (1) through welding;

a wheel disc (5) is arranged at the bottom of the bearing steel wheel (2);

the synchronous connecting rods (3) are respectively and fixedly connected to the reinforcing ribs (6) of the front bracket (1) and the rear bracket (1) through bolts.

2. The device for carrying large gears in small areas of ships according to claim 1, characterized in that the number of the reinforcing ribs (6) on the bracket (1) is three.

3. The device for carrying large gears in small areas of ships according to claim 2, characterized in that the arrangement of the reinforcing ribs (6) of the bracket (1) is the result of three-dimensional stress junction of the gear obtained by establishing a gear diagram according to three-dimensional modeling software and importing the gear diagram into finite element software for analysis and calculation.

4. The device for carrying large gears in a small area of a ship as claimed in claim 1, wherein the top V-shaped steel plate of the bracket (1) is welded and connected by the steel plate with the thickness of 20 mm.

5. The device for handling large gears in small areas of ships according to claim 1, characterized in that the brackets (1) are respectively provided in front of and behind the lower part of the large gear.

6. The device for carrying large gears in small areas of ships according to claim 1, characterized in that the bearing steel wheels (2) are four groups of reversible steel wheels.

7. The device for carrying large gears in a narrow area of a ship as claimed in claim 1, wherein the synchronous connecting rods (3) are symmetrically arranged on two sides of the front bracket (1) and the rear bracket (1) in pairs.

8. Device for handling large gears in small areas of ships according to claim 1, characterized in that the connection points of the synchronization link (3) are located on the outer reinforcement (6) in the middle of one bracket (1) and on the inner reinforcement (6) in the middle of the other bracket.