Manual rotatable simple suspension arm

Abstract

The utility model discloses a manual rotatable simple suspension arm, which relates to the field of suspension arms, and comprises a fixed column for bearing the suspension arm, the top surface of the fixed column is fixedly connected with four support columns, the top ends of the four support columns are fixedly connected with a fixed ring together, the fixed ring is internally provided with a movable column, and the movable column is fixedly connected with the fixed ring. And a limiting groove is formed in the outer wall of the movable column, a limiting block is fixedly connected to the inner wall of the fixing ring, the limiting block is slidably connected to the interior of the limiting groove, a threaded column is fixedly connected to the bottom end of the movable column, and the bottom end of the threaded column extends into an inner cavity of the fixing column. The fixing column is arranged, the four supporting columns are fixedly connected to the top face of the fixing column, the fixing ring is fixed through the supporting columns, and the movable column can ascend and descend in the vertical direction under the adjustment of the adjusting device through the limiting block of the fixing ring; and when the lifting arm is lifted to a certain position, the deformed part of the lifting arm can be conveniently replaced and maintained.

Description

Technical Field

[0001] The utility model relates to the field of suspension arms, in particular to a manually rotatable simple suspension arm. Background Art

[0002] The crane boom is one of the important lifting equipment in the engineering field. It is generally composed of a column, a slewing arm slewing drive device and an electric hoist. It has the advantages of light weight, large span, and large lifting capacity. It is widely used in the field of shipbuilding and marine engineering. In some shipbuilding and marine engineering structures, it is necessary to set a rotatable boom at the edge of the cabin deck opening for the transportation of maintenance equipment removed from the cabin and the transfer of injured personnel. Most of the crane booms on the market are electric or hydraulic, but the structure of the deck opening on the ship is relatively weak, and additional deck reinforcement ribs need to be added to meet the strength requirements. In addition, the boom has a large working load, and the structure is prone to large deformation. After deformation, hard friction is easily generated, which is not conducive to later maintenance and replacement. Summary of the invention

[0003] The purpose of the utility model is to provide a manual rotatable simple boom to solve the problem that most of the crane booms on the market are electric or hydraulic, but the structure is relatively weak at the opening of the deck on the ship, and additional deck reinforcement ribs need to be added to meet the strength requirements. In addition, the boom has a large working load, and the structure is prone to large deformation, which is easy to cause hard friction after deformation, which is not conducive to later maintenance and replacement.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a manually rotatable simple boom, comprising a fixed column supporting the boom, the top surface of the fixed column is fixedly connected to four supporting columns, the top ends of the four supporting columns are commonly fixedly connected to a fixed ring, a movable column is provided inside the fixed ring, a limiting groove is provided on the outer wall of the movable 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, the bottom end of the movable column is fixedly connected to a threaded column, the bottom end of the threaded column extends into the inner cavity of the fixed column, and an adjusting device for adjusting the height of the threaded column is provided inside the fixed column.

[0005] Preferably, the adjusting device includes a worm gear arranged inside the fixed column, the outer wall of the worm gear is provided with a driving device for driving the worm gear to rotate, the worm gear is sleeved on the outer wall of the threaded column, and the inner wall of the worm gear is threadedly connected to the threaded column, a circular groove is opened in the inner cavity of the fixed column, a double-ring bearing is fixedly connected to the inner wall of the circular groove, the top of the double-ring bearing is fixedly connected to the worm gear, a threaded opening matching the threaded column is opened inside the worm gear, and an opening larger than the diameter of the threaded column is opened in the center of the double-ring bearing.

[0006] Preferably, the driving device comprises a worm, the worm is meshingly connected to the turbine, one end of the worm is fixedly connected to a turning handle, and the end of the worm away from the turning handle is rotatably connected to the inner wall of the circular groove.

[0007] Preferably, a circular base is fixedly connected to the bottom end of the fixing column, and the circular base is fixedly connected to the deck via fixing bolts.

[0008] Preferably, the rod wall of the movable column is fixedly connected with a clamping plate, the top end of the movable column is sleeved with a sleeve plate, a rotating column is provided between the clamping plate and the sleeve plate, and both ends of the rotating column are respectively clamped in the bearings of the clamping plate and the sleeve plate surface openings.

[0009] Preferably, a hanging plate is fixedly connected to the rod wall of the rotating column, a plurality of mounting holes for mounting a hand chain hoist are provided on the surface of the hanging plate, and a reinforcing plate is fixedly connected between the rotating column and the hanging plate.

[0010] The technical effects and advantages of the utility model are as follows: the utility model arranges a fixed column, and four supporting columns are fixedly connected to the top surface of the fixed column. A fixing ring is fixed by the supporting column, and a limit block of the fixing ring enables the movable column to be raised and lowered in the vertical direction under the adjustment of the adjusting device, and to be raised and lowered to a certain position so as to facilitate the replacement and maintenance of the deformed part of the boom. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0012] Figure 2 It is a schematic diagram of the top view structure of the fixing column of the utility model.

[0013] Figure 3 It is a schematic diagram of the front cross-sectional structure of the fixing column of the utility model.

[0014] In the figure: 1. fixed column; 2. movable column; 21. limit groove; 3. threaded column; 4. support column; 5. fixed ring; 51. limit block; 6. clamping plate; 7. sleeve plate; 8. rotating column; 9. worm; 91. turning handle; 10. worm wheel; 11. circular groove; 12. double-ring bearing; 13. reinforcement plate; 14. hanging plate; 15. mounting hole; 16. round base. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] The utility model provides Figure 1-3 A manually rotatable simple boom shown in the figure comprises a fixed column 1 for carrying the boom, the top surface of the fixed column 1 is fixedly connected with four supporting columns 4, the top ends of the four supporting columns 4 are commonly fixedly connected with a fixed ring 5, a movable column 2 is arranged inside the fixed ring 5, a limiting groove 21 is arranged on the outer wall of the movable column 2, a limiting block 51 is fixedly connected to the inner wall of the fixed ring 5, the limiting block 51 is slidably connected to the inside of the limiting 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 the inner cavity of the fixed column 1, and an adjusting device for adjusting the height of the threaded column 3 is arranged inside the fixed column 1;

[0017] The threaded column 3 can be driven to rotate through the adjusting device, and the rotation of the movable column 2 is limited by the limit block 51 inside the fixed ring 5, thereby limiting the rotation of the threaded column 3, so that the movable column 2 can be raised and lowered. When the movable column 2 drops to a certain level, it is convenient to maintain and replace the worn parts.

[0018] like Figure 1 As shown, the rod wall of the moving column 2 is fixedly connected with a clamping plate 6, the top end of the moving column 2 is sleeved with a sleeve plate 7, a rotating column 8 is arranged between the clamping plate 6 and the sleeve plate 7, and the two ends of the rotating column 8 are respectively clamped at the bearings of the openings on the surfaces of the clamping plate 6 and the sleeve plate 7;

[0019] The position of the rotating column 8 can be fixed by the clamping plate 6 and the sleeve plate 7, so that the movable column 2 can drive the rotating column 8 to move up and down.

[0020] like Figure 1 As shown, a hanging plate 14 is fixedly connected to the rod wall of the rotating column 8, and a plurality of mounting holes 15 for mounting a hand chain hoist are provided on the surface of the hanging plate 14. A reinforcing plate 13 is fixedly connected between the rotating column 8 and the hanging plate 14. The reinforcing plate 13 strengthens the lifting strength of the hanging plate 14, and the mounting holes 15 facilitate the installation of the hand chain hoist.

[0021] like Figure 1 As shown, the bottom end of the fixed column 1 is fixedly connected with a circular base 16, and the circular base 16 is fixedly connected to the deck through fixing bolts. The circular base 16 can increase the contact surface between the boom and the deck, increase the load-bearing capacity, and prevent the deck from being squeezed and deformed.

[0022] like Figure 2 and Figure 3As shown, the adjusting device includes a worm wheel 10 arranged inside the fixed column 1, the outer wall of the worm wheel 10 is provided with a driving device for driving the worm wheel 10 to rotate, the worm wheel 10 is sleeved on the outer wall of the threaded column 3, and the inner wall of the worm wheel 10 is threadedly connected to the threaded column 3, a circular groove 11 is opened 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 of the double-ring bearing 12 is fixedly connected to the worm wheel 10, a threaded opening matching the threaded column 3 is opened inside the worm wheel 10, and an opening larger than the diameter of the threaded column 3 is opened in the center of the double-ring bearing 12;

[0023] The double-ring bearing 12 can prevent the worm wheel 10 from rubbing against the circular groove 11 during rotation, thereby reducing wear between parts. The center of the double-ring bearing 12 is larger than the threaded column 3, which facilitates the lowering of the threaded column 3.

[0024] like Figure 1 and Figure 2 As shown, the driving device includes a worm 9, which is meshed with a worm wheel 10, one end of the worm 9 is fixedly connected to a turning handle 91, and the end of the worm 9 away from the turning handle 91 is rotatably connected to the inner wall of the circular groove 11;

[0025] The worm 9 can be driven to rotate by turning the handle 91, and the worm 9 drives the worm wheel 10 to cooperate to ensure that the threaded column 3 descends to a certain extent and self-locks, thereby preventing the boom cargo from being too heavy and squeezing the moving column 2 to descend.

[0026] The working principle of the utility model is as follows: when in use, first fix the fixed column 1 on the deck position, and then drive the worm 9 to rotate by turning the handle 91, and the worm gear 10 is driven to rotate on the double-ring bearing 12 by the rotation of the worm 9. At this time, the limit block 51 is placed in the limit groove 21 to lock the rotation of the movable column 2, and then the rotation of the threaded column 3 is locked. Therefore, when the worm gear 10 rotates, it will drive the threaded column 3 to move up and down, and the movable column 2 is moved by the movement of the threaded column 3, so that the movable column 2 is lowered to a certain position, and then one end of the rotating column 8 is clamped in the bearing of the clamping plate 6, and then the sleeve plate 7 is sleeved on the movable column 2, so that the bearing of the sleeve plate 7 is sleeved on the top of the rotating column 8, and the rotating column 8 is limited. Then the handle hoist is installed at the mounting hole 15 of the hanging plate 14. At this time, the boom is installed. If the parts of the boom are bent or damaged after long-term use, the corresponding position can be replaced by rotating the handle 91 to lower the height of the movable column 2.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A manually rotatable simple boom, comprising a fixed column (1) supporting the boom, characterized in that: The top surface of the fixed column (1) is fixedly connected to four supporting columns (4), the top ends of the four supporting columns (4) are commonly fixedly connected to a fixing ring (5), a movable column (2) is provided inside the fixing ring (5), a limiting groove (21) is provided on the outer wall of the movable column (2), a limiting block (51) is fixedly connected to the inner wall of the fixing ring (5), the limiting block (51) is slidably connected to the inside of the limiting 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 the inner cavity of the fixed column (1), and an adjusting device for adjusting the height of the threaded column (3) is provided inside the fixed column (1).

2. A manually rotatable simple boom according to claim 1, characterized in that: The adjusting device comprises a worm wheel (10) arranged inside a fixed column (1); the outer wall of the worm wheel (10) is provided with a driving device for driving the worm wheel (10) to rotate; the worm wheel (10) is sleeved on the outer wall of the threaded column (3); the inner wall of the worm wheel (10) is threadedly connected to the threaded column (3); a circular groove (11) is provided 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 to the worm wheel (10); a threaded opening matching the threaded column (3) is provided inside the worm wheel (10); and an opening larger than the diameter of the threaded column (3) is provided at the center of the double-ring bearing (12).

3. A manually rotatable simple boom according to claim 2, characterized in that: The driving device comprises a worm (9), the worm (9) being meshingly connected to a worm wheel (10), one end of the worm (9) being fixedly connected to a turning handle (91), and one end of the worm (9) away from the turning handle (91) being rotatably connected to an inner wall of the circular groove (11).

4. The manual rotatable simple boom according to claim 1, characterized in that: The bottom end of the fixing column (1) is fixedly connected to a circular base (16), and the circular base (16) is fixedly connected to the deck via fixing bolts.

5. The manual rotatable simple boom according to claim 1, characterized in that: The rod wall of the movable column (2) is fixedly connected with a clamping plate (6), the top end of the movable column (2) is sleeved with a sleeve plate (7), a rotating column (8) is provided between the clamping plate (6) and the sleeve plate (7), and the two ends of the rotating column (8) are respectively clamped in the bearings of the openings on the surfaces of the clamping plate (6) and the sleeve plate (7).

6. The manual rotatable simple boom according to claim 5, characterized in that: A hanging plate (14) is fixedly connected to the rod wall of the rotating column (8), a plurality of mounting holes (15) for mounting a hand chain hoist are provided on the surface of the hanging plate (14), and a reinforcing plate (13) is fixedly connected between the rotating column (8) and the hanging plate (14).

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