A single-arm column rotating crane

Abstract

This disclosure relates to the field of crane technology. One embodiment of this disclosure provides a single-arm column rotary crane, including a column. A circular sleeve is movably fitted onto the top of the outer surface of the column. A rotary arm is fixedly installed at the left end of the circular sleeve, and a tripod is fixedly installed on the right side of the bottom end of the rotary arm. In this disclosure, by setting up a movable rod, a rubber anti-slip pad, a diagonal rod, a movable block, and a lead screw, when the servo motor is started, the lead screw will rotate. Since the outer surface of the lead screw and the inner surface of the movable block are threaded together, as the lead screw rotates, the movable block will move one end of the diagonal rod, thereby causing the other end of the diagonal rod to generate a thrust on the movable rod, pushing the movable rod, along with the rubber anti-slip pad, towards the column and pressing it against the column. In this way, the movable rod and the rubber anti-slip pad can be used to achieve auxiliary positioning of the rotary arm, solving the technical problem of positional displacement of the rotary arm due to inertia in the prior art.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of crane technology, and more specifically, to a single-arm column rotary crane. Background Technology

[0002] A crane is a mechanical device used for vertical lifting and horizontal movement of heavy objects. It is widely used in many industries such as construction, ports, logistics, and manufacturing. It is an indispensable and important piece of equipment in modern industrial production. The main types include bridge cranes, gantry cranes, tower cranes, mobile cranes, and portal cranes.

[0003] Single-arm rotary cranes are widely used for short-distance, intensive lifting operations due to their lightweight and flexible characteristics. However, they still have shortcomings in actual use. Since single-arm rotary cranes mainly rely on the friction between the wheel and the fixed ring to achieve rotation, the slewing arm, due to its own weight, is prone to continue rotating after stopping due to inertia or when subjected to tension, causing the position of the slewing arm to shift. Therefore, improvements are needed to address this issue. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a single-arm column rotary crane, which solves the technical problem that the rotary arm is prone to positional displacement in the prior art.

[0005] According to one aspect, at least one embodiment of this disclosure provides a single-arm column rotary crane, including a column, a circular sleeve movably fitted onto the top of the outer surface of the column, a rotary arm fixedly installed at the left end of the circular sleeve, a tripod fixedly installed at the right side of the bottom end of the rotary arm, movable rods movably connected to the bottom of the front and rear ends of the tripod, the right end of the movable rod penetrating the tripod and extending to the outside of the tripod and fixedly fitted with a rubber anti-slip pad, a T-block movably fitted onto the right side inside the movable rod, the outer surface of the T-block being fixedly connected to the outer surface of the tripod, a diagonal rod hinged to the left side of the top end of the movable rod, a movable block hinged to the other end of the diagonal rod, the outer surface of the movable block being movably fitted onto the inner surface of the tripod, a servo motor fixedly fitted onto the inner surface of the top end of the tripod, a lead screw fixedly fitted onto the other end of the output shaft of the servo motor, and the outer surface of the lead screw being threadedly fitted onto the inner surface of the movable block.

[0006] As a preferred technical solution of this utility model, reinforcing plates located above the tripod are fixedly installed on the right sides of the front and rear ends of the rotary arm, and a fixing ring located below the tripod is fixedly sleeved on the outer surface of the column.

[0007] As a preferred embodiment of the present invention, a first motor is fixedly sleeved inside the bottom end of the tripod, and a first rotating shaft is fixedly sleeved at the other end of the output shaft of the first motor. The bottom end of the first rotating shaft passes through the tripod and extends to the outside of the tripod, and a round wheel is fixedly sleeved thereon. The outer surface of the round wheel and the outer surface of the fixed ring are movably connected.

[0008] As a preferred embodiment of this utility model, a movable block is movably sleeved on the left side of the bottom end of the rotary arm, and an electric hoist is movably mounted on the bottom end of the movable block.

[0009] As a preferred technical solution of this utility model, a second motor is fixedly installed on the right side of the top front end of the moving block, and a second rotating shaft is fixedly sleeved on the other end of the output shaft of the second motor. The rear end of the second rotating shaft passes through the moving block and extends into the interior of the moving block and is fixedly sleeved with a drive wheel. The outer surface of the drive wheel and the outer surface of the rotating arm are movably connected.

[0010] As a preferred embodiment of this utility model, a front wheel is movably sleeved on the left side of the top front end of the moving block, and the outer surface of the front wheel is movably connected to the outer surface of the rotary arm. Rear wheels are movably sleeved on the left and right sides of the top rear end of the moving block, and the outer surface of the rear wheels is movably connected to the outer surface of the rotary arm.

[0011] As a preferred embodiment of this utility model, an insert block is movably sleeved inside the bottom end of the movable block, the bottom end of the insert block is fixedly connected to the top end of the electric hoist, and long rods are movably sleeved inside the left and right ends of the insert block, with the outer surface of the long rods movably sleeved to the inner surface of the movable block.

[0012] As a preferred embodiment of this utility model, the rear end of the long rod passes through the moving block and extends to the outside of the moving block, and is fixedly sleeved with a crossbar. Springs located outside the long rod are fixedly installed on the left and right sides of the front end of the crossbar, and the other end of the spring is fixedly connected to the outer surface of the moving block.

[0013] As a preferred embodiment of this utility model, an eccentric block is movably connected to the middle of the front end of the crossbar, the outer surface of the eccentric block is movably connected to the outer surface of the moving block, a fixed frame is movably sleeved on the outer surface of the eccentric block, and the front end of the fixed frame is fixedly connected to the outer surface of the moving block.

[0014] As a preferred embodiment of this utility model, a round shaft is fixedly sleeved inside the eccentric block, the top end of the round shaft passes through the fixed frame and extends to the outside of the fixed frame, and a handle is fixedly sleeved thereon, the bottom end of the handle is movably connected to the top end of the fixed frame.

[0015] The beneficial effects of the embodiments disclosed herein are as follows:

[0016] 1. In this disclosure, by setting up a movable rod, a rubber anti-slip pad, a diagonal rod, a movable block, and a lead screw, when the servo motor is started, the lead screw will rotate. Since the outer surface of the lead screw and the inner surface of the movable block are threaded together, as the lead screw rotates, the movable block will move one end of the diagonal rod, thereby causing the other end of the diagonal rod to generate a thrust on the movable rod, pushing the movable rod and the rubber anti-slip pad towards the column and pressing it against the column. In this way, the movable rod and the rubber anti-slip pad can be used to achieve auxiliary positioning of the rotary arm, thereby preventing it from continuing to rotate after stopping and causing positional deviation.

[0017] 2. In this disclosure, by setting up an insert block, a long rod, a crossbar, a spring, and an eccentric block, when the handle is turned, the round shaft will rotate with the eccentric block. As the eccentric block rotates, it will exert a thrust on the crossbar, pushing the crossbar and the long rod to move along the inner surface of the fixed frame and continue to stretch the spring until the long rod and the insert block separate, releasing the long rod from locking the insert block and the moving block. This allows the electric hoist and the moving block to be separated, thereby improving the convenience of disassembling the electric hoist. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present disclosure;

[0020] Figure 2 for Figure 1 A frontal cross-sectional view of the structure in the embodiment;

[0021] Figure 3 for Figure 1 A cross-sectional view of the active block in the embodiment;

[0022] Figure 4 for Figure 1 A schematic cross-sectional view of the top structure in the embodiment;

[0023] Figure 5 for Figure 1 A cross-sectional view of the eccentric block in the embodiment.

[0024] In the diagram: 1. Column; 2. Circular sleeve; 3. Rotating arm; 4. Tripod; 5. Movable rod; 6. Rubber anti-slip pad; 7. T-block; 8. Diagonal rod; 9. Movable block; 10. Servo motor; 11. Lead screw; 12. Reinforcing plate; 13. Fixing ring; 14. First motor; 15. First shaft; 16. Circular wheel; 17. Moving block; 18. Electric hoist; 19. Second motor; 20. Second shaft; 21. Drive wheel; 22. Front wheel; 23. Rear wheel; 24. Insert block; 25. Long rod; 26. Crossbar; 27. Spring; 28. Fixing frame; 29. ​​Eccentric block; 30. Circular shaft; 31. Handle. Detailed Implementation

[0025] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0026] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0028] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] like Figures 1 to 5 As shown, a single-arm column rotary crane according to an embodiment of the present disclosure is illustrated, including a column 1, a circular sleeve 2 movably sleeved on the top of the outer surface of the column 1, a rotary arm 3 fixedly installed on the left end of the circular sleeve 2, a tripod 4 fixedly installed on the right side of the bottom end of the rotary arm 3, movable rods 5 movably connected to the bottom of the front and rear ends of the tripod 4 respectively, the right end of the movable rod 5 passing through the tripod 4 and extending to the outside of the tripod 4 and fixedly installed with a rubber anti-slip pad 6, a T-shaped block 7 movably sleeved on the right side inside the movable rod 5, the outer surface of the T-shaped block 7 being fixedly connected to the outer surface of the tripod 4, a diagonal rod 8 hinged to the left side of the top end of the movable rod 5, a movable block 9 hinged to the other end of the diagonal rod 8, the outer surface of the movable block 9 being movably sleeved to the inner surface of the tripod 4, a servo motor 10 fixedly sleeved on the inner surface of the top end of the tripod 4, a lead screw 11 fixedly sleeved on the other end of the output shaft of the servo motor 10, the outer surface of the lead screw 11 being threadedly sleeved to the inner surface of the movable block 9.

[0032] When the servo motor 10 starts, the lead screw 11 will rotate. Since the lead screw 11 and the movable block 9 are threaded together, the movable block 9 will move along the inner surface of the tripod 4 as the lead screw 11 rotates. Since the upper and lower ends of the inclined rod 8 are hinged to the movable block 9 and the movable rod 5 respectively, the top end of the inclined rod 8 will move together with the movable block 9, thereby generating a thrust on the movable rod 5 at the bottom end of the inclined rod 8. This pushes the movable rod 5 along the outer surface of the T-block 7, carrying the rubber anti-slip pad 6 towards the column 1, thereby pressing the rubber anti-slip pad 6 against the column 1. This achieves auxiliary positioning of the rotary arm 3 after rotation, thus preventing it from continuing to rotate after stopping and causing positional deviation.

[0033] In some examples, reinforcing plates 12 located above the tripod 4 are fixedly installed on the right side of the front and rear ends of the slewing arm 3, and fixing rings 13 located below the tripod 4 are fixedly sleeved on the outer surface of the column 1.

[0034] The presence of the reinforcing plate 12 will strengthen the fixation, thereby improving the stability of the rotary arm 3 and the tripod 4, while the presence of the fixing ring 13 is used to assist in rotating the rotary arm 3.

[0035] In some examples, a first motor 14 is fixedly sleeved inside the bottom end of the tripod 4, and a first rotating shaft 15 is fixedly sleeved at the other end of the output shaft of the first motor 14. The bottom end of the first rotating shaft 15 passes through the tripod 4 and extends to the outside of the tripod 4 and is fixedly sleeved with a wheel 16. The outer surface of the wheel 16 is movably connected to the outer surface of the fixing ring 13.

[0036] When the first motor 14 starts, the first rotating shaft 15 will drive the wheel 16 to rotate. Since the outer surfaces of the wheel 16 and the fixed ring 13 are rough, as the wheel 16 rotates, the tripod 4 and the rotating arm 3 will rotate around the sleeve 2 as the axis.

[0037] In some examples, a movable block 17 is movably sleeved on the left side of the bottom end of the rotary arm 3, and an electric hoist 18 is movably mounted on the bottom end of the movable block 17.

[0038] The presence of the movable block 17 will facilitate the movement of the electric hoist 18, which is used for lifting goods.

[0039] In some examples, a second motor 19 is fixedly installed on the right side of the top front end of the moving block 17. The other end of the output shaft of the second motor 19 is fixedly sleeved with a second rotating shaft 20. The rear end of the second rotating shaft 20 passes through the moving block 17 and extends into the interior of the moving block 17 and is fixedly sleeved with a drive wheel 21. The outer surface of the drive wheel 21 is movably connected to the outer surface of the rotary arm 3.

[0040] When the second motor 19 is started, the second rotating shaft 20 will drive the drive wheel 21 to rotate, thereby causing the moving block 17 to move along the rotating arm 3 with the electric hoist 18 under the action of the second motor 19 and the drive wheel 21.

[0041] In some examples, a front wheel 22 is movably sleeved on the left side of the top front end of the moving block 17, and the outer surface of the front wheel 22 is movably connected to the outer surface of the rotary arm 3. Rear wheels 23 are movably sleeved on the left and right sides of the top rear end of the moving block 17, and the outer surface of the rear wheel 23 is movably connected to the outer surface of the rotary arm 3.

[0042] The presence of the front wheel 22 and the rear wheel 23 will assist the movement of the moving block 17, thereby ensuring the stability of the movement of the moving block 17.

[0043] In some examples, the bottom end of the movable block 17 is movably fitted with a plug 24, the bottom end of the plug 24 is fixedly connected to the top end of the electric hoist 18, and the left and right ends of the plug 24 are respectively movably fitted with long rods 25, the outer surface of the long rods 25 is movably fitted with the inner surface of the movable block 17.

[0044] The presence of the insert block 24 and the long rod 25 enables the connection and fixation of the moving block 17 and the electric hoist 18.

[0045] In some examples, the rear end of the long rod 25 passes through the movable block 17 and extends to the outside of the movable block 17 and is fixedly sleeved with a crossbar 26. Springs 27 located outside the long rod 25 are fixedly installed on the left and right sides of the front end of the crossbar 26, and the other end of the springs 27 is fixedly connected to the outer surface of the movable block 17.

[0046] When spring 27 is in a stretched state, the restoring action of spring 27 will force the crossbar 26, along with the long bar 25, to move toward the moving block 17.

[0047] In some examples, an eccentric block 29 is movably connected to the middle of the front end of the crossbar 26, the outer surface of the eccentric block 29 is movably connected to the outer surface of the movable block 17, and a fixed frame 28 is movably sleeved on the outer surface of the eccentric block 29, the front end of the fixed frame 28 is fixedly connected to the outer surface of the movable block 17.

[0048] When the eccentric block 29 rotates, it will push the crossbar 26 and the long bar 25 to move outward, while the fixed frame 28 plays a supporting and fixing role.

[0049] In some examples, a round shaft 30 is fixedly sleeved inside the eccentric block 29. The top end of the round shaft 30 passes through the fixed frame 28 and extends to the outside of the fixed frame 28, and a handle 31 is fixedly sleeved thereon. The bottom end of the handle 31 is movably connected to the top end of the fixed frame 28.

[0050] When the handle 31 is turned, the round shaft 30 will rotate along the inner surface of the fixed frame 28, carrying the eccentric block 29.

[0051] Working principle and usage process of this utility model:

[0052] In use, the operator starts the first motor 14, causing the first rotating shaft 15 to drive the wheel 16 to rotate. This causes the slewing arm 3 and the tripod 4 to rotate around the sleeve 2 as the axis under the combined action of the wheel 16 and the fixed ring 13. When the rotation reaches the designated position, the servo motor 10 is started, causing the lead screw 11 to rotate. This causes the movable block 9, which is threaded onto the outer surface of the lead screw 11, to move one end of the inclined rod 8. This causes the other end of the inclined rod 8 to exert a thrust on the movable rod 5, pushing the movable rod 5 along the outer surface of the T-block 7 and along the rubber anti-slip pad 6 towards the column 1 and pressing it against the column 1. In this way, the movable rod 5 and the rubber anti-slip pad 6 can be used to achieve auxiliary positioning of the slewing arm 3, thereby preventing it from continuing to rotate after stopping and causing positional deviation. Then, the operator can start the second motor 19 and the electric hoist 18 to carry out the hoisting operation.

[0053] When performing maintenance on the electric hoist 18, the operator turns the handle 31, causing the round shaft 30 to rotate along with the eccentric block 29. At this time, the eccentric block 29 will exert a thrust on the outer surface of the crossbar 26, pushing the crossbar 26 and the long rod 25 to move along the inner surface of the fixed frame 28 and continue to stretch the spring 27. When the long rod 25 and the insert block 24 separate, the locking of the long rod 25 to the insert block 24 and the moving block 17 can be released. Then the operator can separate the electric hoist 18 from the moving block 17, thereby achieving quick disassembly of the electric hoist 18 and facilitating maintenance.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A single-arm column rotating crane, comprising a column (1), characterized in that: A circular sleeve (2) is movably fitted onto the top of the outer surface of the column (1). A rotating arm (3) is fixedly installed on the left end of the circular sleeve (2). A tripod (4) is fixedly installed on the right side of the bottom end of the rotating arm (3). Movable rods (5) are movably connected to the bottom of the front and rear ends of the tripod (4). The right end of the movable rod (5) passes through the tripod (4) and extends to the outside of the tripod (4) and is fixedly fitted with a rubber anti-slip pad (6). A T-shaped block (7) is movably fitted onto the right side of the inside of the movable rod (5). 7) The outer surface of the tripod (4) is fixedly connected to the outer surface of the tripod (4). The left side of the top of the movable rod (5) is hinged to the inclined rod (8). The other end of the inclined rod (8) is hinged to the movable block (9). The outer surface of the movable block (9) is movably connected to the inner surface of the tripod (4). The inner surface of the top of the tripod (4) is fixedly connected to the servo motor (10). The other end of the output shaft of the servo motor (10) is fixedly connected to the lead screw (11). The outer surface of the lead screw (11) is threadedly connected to the inner surface of the movable block (9).

2. A single-arm column rotating crane according to claim 1, characterized in that: The right sides of the front and rear ends of the rotary arm (3) are respectively fixedly installed with reinforcing plates (12) located above the tripod (4), and the outer surface of the column (1) is fixedly fitted with a fixing ring (13) located below the tripod (4).

3. A single-arm column rotating crane according to claim 1, characterized in that: The first motor (14) is fixedly sleeved inside the bottom end of the tripod (4). The other end of the output shaft of the first motor (14) is fixedly sleeved with a first rotating shaft (15). The bottom end of the first rotating shaft (15) passes through the tripod (4) and extends to the outside of the tripod (4) and is fixedly sleeved with a wheel (16). The outer surface of the wheel (16) is movably connected to the outer surface of the fixing ring (13).

4. A single-arm column rotating crane according to claim 1, characterized in that: A movable block (17) is movably sleeved on the left side of the bottom end of the rotary arm (3), and an electric hoist (18) is movably installed on the bottom end of the movable block (17).

5. A single-arm column rotating crane according to claim 4, characterized in that: A second motor (19) is fixedly installed on the right side of the top front end of the moving block (17). The other end of the output shaft of the second motor (19) is fixedly sleeved with a second rotating shaft (20). The rear end of the second rotating shaft (20) passes through the moving block (17) and extends into the interior of the moving block (17), and is fixedly sleeved with a drive wheel (21). The outer surface of the drive wheel (21) is movably connected to the outer surface of the rotary arm (3).

6. A single-arm column rotating crane according to claim 4, characterized in that: A front wheel (22) is movably sleeved on the left side of the top front end of the moving block (17). The outer surface of the front wheel (22) is movably connected to the outer surface of the rotary arm (3). Rear wheels (23) are movably sleeved on the left and right sides of the top rear end of the moving block (17). The outer surface of the rear wheel (23) is movably connected to the outer surface of the rotary arm (3).

7. A single-arm column rotating crane according to claim 4, characterized in that: The bottom end of the movable block (17) is movably fitted with a plug (24), the bottom end of the plug (24) is fixedly connected to the top end of the electric hoist (18), and the left and right ends of the plug (24) are respectively movably fitted with long rods (25), the outer surface of the long rods (25) and the inner surface of the movable block (17) are movably fitted.

8. A single-arm column rotating crane according to claim 7, characterized in that: The rear end of the long rod (25) passes through the movable block (17) and extends to the outside of the movable block (17) and is fixedly sleeved with a crossbar (26). Springs (27) located outside the long rod (25) are fixedly installed on the left and right sides of the front end of the crossbar (26). The other end of the spring (27) is fixedly connected to the outer surface of the movable block (17).

9. A single-arm column rotating crane according to claim 8, characterized in that: An eccentric block (29) is movably connected to the middle of the front end of the crossbar (26). The outer surface of the eccentric block (29) is movably connected to the outer surface of the moving block (17). A fixed frame (28) is movably sleeved on the outer surface of the eccentric block (29). The front end of the fixed frame (28) is fixedly connected to the outer surface of the moving block (17).

10. A single-arm column rotating crane according to claim 9, characterized in that: The eccentric block (29) is fitted with a round shaft (30) inside. The top end of the round shaft (30) passes through the fixed frame (28) and extends to the outside of the fixed frame (28), and is fitted with a handle (31). The bottom end of the handle (31) is movably connected to the top end of the fixed frame (28).

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