CN222892938U - Manual rotatable simple suspension arm - Google Patents

Abstract

The utility model discloses a manual rotatable simple boom, which relates to the field of booms, including a fixed column that supports the boom, the top surface of the fixed column is fixedly connected with four supporting columns, the tops of the four supporting columns are commonly fixedly connected with a fixed ring, a moving column is arranged inside the fixed ring, a limiting groove is provided on the outer wall of the moving column, a limiting block is fixedly connected to the inner wall of the fixed ring, the limiting block is slidably connected to the inside of the limiting groove, a threaded column is fixedly connected to the bottom end of the moving column, and the bottom end of the threaded column extends into the inner cavity of the fixed column. The utility model sets a fixed column, and four supporting columns are fixedly connected to the top surface of the fixed column, and the fixing ring is fixed by the supporting column. The moving column can be lifted up and down in the vertical direction under the adjustment of the adjusting device through the limiting block of the fixing ring, and lifted to a certain position to facilitate the replacement and maintenance of the deformed part of the boom.

Description

Manual rotatable simple suspension arm

Technical Field

The utility model relates to the field of suspension arms, in particular to a manual rotatable simple suspension arm.

Background

The lifting arm is one of important lifting equipment in the engineering field, generally consists of a stand column, a rotary arm rotary driving device and an electric hoist, has the advantages of light dead weight, large span, large lifting capacity and the like, and is widely applied to the fields of ships and ocean engineering. In certain marine and marine engineering structures, it is desirable to provide a rotatable boom at the open edge of the deck of the nacelle for transport of maintenance equipment removed from the nacelle and for transfer of injured personnel. Most of lifting booms in the market are in an electric or hydraulic mode, but the structures of the openings of decks on ships are weak, and additional deck reinforcing ribs are required to be added to meet the strength requirements. And the working load of the suspension arm is larger, the structure is easy to generate larger deformation, hard friction is easy to generate after deformation, and the suspension arm is not beneficial to later maintenance and replacement.

Disclosure of Invention

The utility model aims to provide a manually rotatable simple suspension arm, which solves the problems that most of the lifting suspension arms in the market proposed in the background technology are in an electric or hydraulic mode, but the structure of a deck opening on a ship is weak, and additional deck reinforcing ribs are required to be additionally arranged to meet the strength requirement. And the working load of the suspension arm is larger, the structure is easy to generate larger deformation, hard friction is easy to generate after deformation, and the later maintenance and replacement are not facilitated.

In order to achieve the above purpose, the manual rotatable simple suspension arm comprises a fixed column for bearing the suspension arm, wherein four support columns are fixedly connected to the top surface of the fixed column, a fixed ring is fixedly connected to the top ends of the four support columns, a movable column is arranged in the fixed ring, a limit groove is formed in the outer wall of the movable column, a limit block is fixedly connected to the inner wall of the fixed ring, the limit block is slidably connected to the inside of the limit groove, a threaded column is fixedly connected to the bottom end of the movable column, the bottom end of the threaded column extends into an inner cavity of the fixed column, and an adjusting device for adjusting the height of the threaded column is arranged in the fixed column.

Preferably, the adjusting device comprises a worm wheel arranged inside the fixing column, a driving device for driving the worm wheel to rotate is arranged on the outer wall of the worm wheel, the worm wheel is sleeved on the outer wall of the threaded column, the inner wall of the worm wheel is in threaded connection with the threaded column, a round groove is formed in the inner cavity of the fixing column, a double-ring bearing is fixedly connected with the inner wall of the round groove, the top end of the double-ring bearing is fixedly connected with the worm wheel, a threaded port matched with the threaded column is formed in the worm wheel, and an opening larger than the diameter of the threaded column is formed in the center of the double-ring bearing.

Preferably, the driving device comprises a worm, the worm is meshed with the turbine, one end of the worm is fixedly connected with a rotating handle, and one end of the worm far away from the rotating handle is rotationally connected with the inner wall of the circular groove.

Preferably, the bottom fixedly connected with circular base of fixed column, circular base passes through fixing bolt and deck looks fixed connection.

Preferably, the pole wall fixedly connected with cardboard of removal post, the top cover of removal post is equipped with the cover board, be equipped with the column between cardboard and the cover board, the both ends of column card respectively in cardboard and cover board surface open-ended bearing department.

Preferably, the hanger plate is fixedly connected with the rod wall of the rotary column, a plurality of mounting holes for mounting the chain block are formed in the surface of the hanger plate, and the reinforcing plate is fixedly connected between the rotary column and the hanger plate.

The lifting arm fixing device has the technical effects and advantages that the four support columns are fixedly connected to the top surface of the fixing column through the fixing columns, the fixing rings are fixed through the support columns, the movable column can be lifted up and down along the vertical direction under the adjustment of the adjusting device through the limiting blocks of the fixing rings, and the movable column is lifted to a certain position, so that the deformed part of the lifting arm can be replaced and maintained conveniently.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic top view of the fixing post of the present utility model.

Fig. 3 is a schematic front sectional view of the fixing post of the present utility model.

In the figure, 1, a fixed column; 2, a movable column, 21, a limit groove, 3, a threaded column, 4, a support column, 5, a fixed ring, 51, a limit block, 6, a clamping plate, 7, a sleeve plate, 8, a rotary column, 9, a worm, 91, a rotary handle, 10, a worm wheel, 11, a circular groove, 12, a double-ring bearing, 13, a reinforcing plate, 14, a hanging plate, 15, a mounting hole and 16, and a circular base.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a manual rotatable simple suspension arm as shown in figures 1-3, which comprises a fixed column 1 for bearing the suspension arm, wherein four support columns 4 are fixedly connected to the top surface of the fixed column 1, a fixed ring 5 is fixedly connected to the top ends of the four support columns 4 together, a movable column 2 is arranged in the fixed ring 5, a limit groove 21 is formed in the outer wall of the movable column 2, a limit block 51 is fixedly connected to the inner wall of the fixed ring 5, the limit block 51 is slidably connected to the inside of the limit groove 21, a threaded column 3 is fixedly connected to the bottom end of the movable column 2, the bottom end of the threaded column 3 extends into an inner cavity of the fixed column 1, and an adjusting device for adjusting the height of the threaded column 3 is arranged in the fixed column 1;

Can drive screw thread post 3 through adjusting device and rotate, inject the rotation of removing post 2 simultaneously through the inside stopper 51 of solid fixed ring 5, and then inject screw thread post 3 and rotate for remove post 2 can go up and down, when removing post 2 and descend to the certain degree and conveniently maintain and change wearing and tearing part.

As shown in fig. 1, a clamping plate 6 is fixedly connected to the rod wall of a moving column 2, a sleeve plate 7 is sleeved at the top end of the moving column 2, a rotating column 8 is arranged between the clamping plate 6 and the sleeve plate 7, and two ends of the rotating column 8 are respectively clamped at bearings with openings on the surfaces of the clamping plate 6 and the sleeve plate 7;

the position of the rotary column 8 can be fixed through the clamping plate 6 and the sleeve plate 7, so that the rotary column 8 is driven to lift by the movable column 2 conveniently.

As shown in fig. 1, the hanging plate 14 is fixedly connected to the rod wall of the rotary column 8, a plurality of mounting holes 15 for mounting the chain block are formed in the surface of the hanging plate 14, the reinforcing plate 13 is fixedly connected between the rotary column 8 and the hanging plate 14, the hoisting strength of the hanging plate 14 is reinforced through the reinforcing plate 13, and meanwhile, the mounting of the chain block is facilitated through the mounting holes 15.

As shown in fig. 1, the bottom end of the fixing column 1 is fixedly connected with a circular base 16, the circular base 16 is fixedly connected with the deck through a fixing bolt, the contact surface between the suspension arm and the deck can be increased through the circular base 16, the bearing is increased, and the deck is prevented from being extruded and deformed.

As shown in fig. 2 and 3, the adjusting device comprises a worm wheel 10 arranged in a fixed column 1, a driving device for driving the worm wheel 10 to rotate is arranged on the outer wall of the worm wheel 10, the worm wheel 10 is sleeved on the outer wall of a threaded column 3, the inner wall of the worm wheel 10 is in threaded connection with the threaded column 3, a circular groove 11 is formed in the inner cavity of the fixed column 1, a double-ring bearing 12 is fixedly connected with the inner wall of the circular groove 11, the top end of the double-ring bearing 12 is fixedly connected with the worm wheel 10, a threaded port matched with the threaded column 3 is formed in the worm wheel 10, and an opening larger than the diameter of the threaded column 3 is formed in the center of the double-ring bearing 12;

The friction between the worm wheel 10 and the circular groove 11 during rotation can be avoided through the double-ring bearing 12, abrasion between parts is reduced, and the center of the double-ring bearing 12 is larger than the threaded column 3 so as to facilitate the lowering of the threaded column 3.

As shown in fig. 1 and 2, the driving device comprises a worm 9, the worm 9 is meshed with a worm wheel 10, one end of the worm 9 is fixedly connected with a rotating handle 91, and one end of the worm 9 away from the rotating handle 91 is rotatably connected with the inner wall of the circular groove 11;

Can drive worm 9 through rotating the twist grip 91 and rotate, drive worm wheel 10 cooperation through worm 9 and can guarantee that screw post 3 descends certain degree and auto-lock, prevent that the davit goods is too heavy, extrude and remove post 2 decline.

The utility model has the working principle that when the lifting arm is used, the fixed column 1 is fixed at a deck position, the worm 9 is driven to rotate through the rotating handle 91, the worm wheel 10 is driven to rotate on the double-ring bearing 12 through the rotation of the worm 9, at the moment, the limiting block 51 is placed in the limiting groove 21 to lock the rotation of the movable column 2, and then the rotation of the threaded column 3 is locked, so that when the worm wheel 10 rotates, the threaded column 3 is driven to ascend and descend, the movable column 2 is moved through the movement of the threaded column 3, so that the movable column 2 is lowered to a certain position, then one end of the rotary column 8 is clamped at a bearing of the clamping plate 6, then the sleeve plate 7 is sleeved on the movable column 2, so that the bearing of the sleeve plate 7 is sleeved at the top end of the rotary column 8, the rotary column 8 is limited, then the handle hoist is installed at the installation hole 15 of the lifting plate 14, and at the moment, if the lifting arm part is bent or damaged after long-term use, the rotary handle 91 is rotated, so that the corresponding position of the movable column 2 is lowered.

It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it should be understood that modifications, equivalents, improvements and modifications to the technical solution described in the foregoing embodiments may occur to those skilled in the art, and all modifications, equivalents, and improvements are intended to be included within the spirit and principle of the present utility model.

Claims (6)

1. The manual rotatable simple suspension arm comprises a fixing column (1) for bearing the suspension arm and is characterized in that four support columns (4) are fixedly connected to the top surface of the fixing column (1), four fixing rings (5) are fixedly connected to the top ends of the support columns (4) together, moving columns (2) are arranged in the fixing rings (5), limiting grooves (21) are formed in the outer walls of the moving columns (2), limiting blocks (51) are fixedly connected to the inner walls of the fixing rings (5), the limiting blocks (51) are slidably connected to the inner portions of the limiting grooves (21), threaded columns (3) are fixedly connected to the bottom ends of the moving columns (2), the bottom ends of the threaded columns (3) extend into inner cavities of the fixing columns (1), and adjusting devices for adjusting the heights of the threaded columns (3) are arranged in the fixing columns (1).

2. The manual rotatable simple suspension arm according to claim 1, wherein the adjusting device comprises a worm wheel (10) arranged inside the fixed column (1), a driving device for driving the worm wheel (10) to rotate is arranged on the outer wall of the worm wheel (10), the worm wheel (10) is sleeved on the outer wall of the threaded column (3), the inner wall of the worm wheel (10) is in threaded connection with the threaded column (3), a circular groove (11) is formed in the inner cavity of the fixed column (1), a double-ring bearing (12) is fixedly connected to the inner wall of the circular groove (11), the top end of the double-ring bearing (12) is fixedly connected with the worm wheel (10), a threaded port matched with the threaded column (3) is formed in the inner side of the worm wheel (10), and an opening larger than the diameter of the threaded column (3) is formed in the center of the double-ring bearing (12).

3. The manual rotatable simple suspension arm according to claim 2, wherein the driving device comprises a worm (9), the worm (9) is meshed with the worm wheel (10), one end of the worm (9) is fixedly connected with a rotating handle (91), and one end of the worm (9) far away from the rotating handle (91) is rotatably connected with the inner wall of the circular groove (11).

4. The manual rotatable simple suspension arm of claim 1, wherein the bottom end of the fixed column (1) is fixedly connected with a round base (16), and the round base (16) is fixedly connected with a deck through a fixing bolt.

5. The manual rotatable simple suspension arm of claim 1, wherein the rod wall of the movable column (2) is fixedly connected with a clamping plate (6), a sleeve plate (7) is sleeved at the top end of the movable column (2), a rotating column (8) is arranged between the clamping plate (6) and the sleeve plate (7), and two ends of the rotating column (8) are respectively clamped at bearings with openings on the surfaces of the clamping plate (6) and the sleeve plate (7).

6. The manual rotatable simple suspension arm of claim 5, wherein a suspension plate (14) is fixedly connected to the rod wall of the rotary column (8), a plurality of mounting holes (15) for mounting a chain block are formed in the surface of the suspension plate (14), and a reinforcing plate (13) is fixedly connected between the rotary column (8) and the suspension plate (14) together.