Lifting mechanism with four lifting points

Abstract

The utility model discloses a lifting mechanism with four lifting points, which relates to the technical field of lifting mechanisms, and comprises a support plate, the upper surface of the support plate is fixedly connected with a stand column, the upper surface of the stand column is fixedly connected with a top plate, the upper surface of the middle of the top plate is fixedly connected with a mounting plate, and the upper surface of the mounting plate is provided with a double-output-shaft motor. A winding wheel is installed on the upper surface of the top plate, a rotating shaft of the winding wheel penetrates through the side face of the winding wheel, a steel wire rope is wound around the surface of the winding wheel, the other end of the steel wire rope is connected with a lifting plate, a groove is formed in the inner side face of the stand column, a sliding block is slidably connected to the surface of the groove, and a limiting frame is fixedly connected to the surface of the sliding block. By arranging the lead screw, the sliding block, the limiting frame and the limiting hole, the effect that the lifting plate cannot shake greatly is achieved, and the purpose of improving the operation stability of the lifting mechanism is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting mechanisms, in particular to a lifting mechanism with four lifting points. Background Art

[0002] The four-point lifting mechanism is a special lifting device, whose main feature is that it has four lifting points to support and lift objects. This mechanism usually consists of four lifting ropes or chains connected to a hook, and can achieve smooth lifting and movement by adjusting the length and tension of each lifting point. The design of the four-point lifting mechanism can evenly distribute the weight of the hoisted object on each lifting point, thereby improving safety and stability.

[0003] The existing four-hanging-point lifting mechanism, when in use, lifts the lifting mechanism through four lifting points, which can evenly distribute the weight of the hoisted object on the four lifting points, thereby improving safety and stability. However, during the lifting process, if the operating speed is too fast or the operation is improper, the lifting plate will still swing greatly, which may cause a major safety accident in severe cases, and thus has the disadvantage of poor stability. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a four-hanging-point lifting mechanism, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a four-hanging-point lifting mechanism comprises a support plate, the upper surface of the support plate is fixedly connected to a column, the upper surface of the column is fixedly connected to a top plate, the upper surface of the middle part of the top plate is fixedly connected to a mounting plate, the upper surface of the mounting plate is installed with a double-output shaft motor, the output end of the double-output shaft motor is fixedly connected to a rotating shaft, the other end of the rotating shaft is fixedly connected to a driving bevel gear, a winch wheel is installed on the upper surface of the top plate, the rotating shaft of the winch wheel passes through the side of the winch wheel, and one end of the passing end is fixedly connected to a driven bevel gear, the surface of the driving bevel gear is meshed and transmitted with the driven bevel gear, a steel wire rope is wound around the surface of the winch wheel, the other end of the steel wire rope is connected to a lifting plate, a groove is provided on the inner side surface of the column, a slider is slidably connected to the surface of the groove, the surface of the slider is fixedly connected to a limiting frame, and a limiting hole is provided on the surface of the limiting frame.

[0008] Optionally, the number of the support plates and columns is two, and they are symmetrically distributed on the lower surface of the top plate.

[0009] Optionally, a support block is fixedly connected to the upper surface of the mounting plate, and a rotating shaft is rotatably connected to the surface of the support block via a bearing. The number of the rotating shaft, the support block and the active bevel gear are two each, and are symmetrically distributed on both sides of the dual-output shaft motor.

[0010] Optionally, the number of the hoisting wheels is four and they are symmetrically distributed in pairs, and the two hoisting wheels on each side share a rotating shaft.

[0011] Optionally, the number of the servo motor, the lead screw, the slider and the limit frame are two each, and they are symmetrically distributed.

[0012] Optionally, each of the limit frames has two upper limit holes, and the wire rope passes through the limit holes.

[0013] The utility model provides a lifting mechanism with four lifting points, which has the following beneficial effects:

[0014] 1. The four-hanging-point lifting mechanism has the effect of improving the stability during operation through the arrangement of the lead screw, the slider, the limit frame and the limit hole. When in use, the dual-output shaft motor drives the rotating shaft and the active bevel gear on both sides to rotate, and the active bevel gear drives the driven bevel gear to rotate, thereby rotating the rotating shaft of the winch wheel. When the winch wheel rotates, the wire rope is wound or released, thereby driving the lifting plate to complete the lifting. In the process of lifting the lifting plate, the dual-output shaft motor is controlled to work while the servo motor is made to work synchronously. The speeds of the dual-output shaft motor and the servo motor are adapted. The servo motor drives the lead screw to rotate, so that the slider threaded on the lead screw surface slides in the groove. The sliding speed of the groove is consistent with the lifting speed of the lifting plate, so that the limit frame is maintained at a position about thirty centimeters above the lifting plate. The lifting plate passes through the limit hole, and then in the process of lifting the lifting plate, the limit frame is maintained above the lifting plate. When the wire rope swings, the limit frame and the limit hole limit the wire rope, so that the wire rope always remains within a certain swinging range, thereby preventing the lifting plate from shaking significantly, thereby achieving the purpose of improving the stability of the lifting mechanism operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 The structural diagram at A in the middle;

[0017] Figure 3 It is a schematic diagram of the structure of the front section of the utility model;

[0018] Figure 4 For this utility model Figure 3Schematic diagram of the structure at B in the middle;

[0019] Figure 5 It is a schematic diagram of the structure of the utility model in a top view of the cross section of the limiting frame.

[0020] In the figure: 1. support plate; 2. column; 3. top plate; 4. mounting plate; 5. dual output shaft motor; 6. rotating shaft; 7. support block; 8. driving bevel gear; 9. winch wheel; 91. wire rope; 92. lifting plate; 10. driven bevel gear; 11. groove; 12. servo motor; 13. lead screw; 14. slider; 15. limit frame; 16. limit hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Example 1

[0023] See also Figures 1 to 5 The utility model provides a technical solution: a four-hanging-point lifting mechanism, comprising a support plate 1, a column 2 is fixedly connected to the upper surface of the support plate 1, the number of the support plate 1 and the column 2 is two, and they are symmetrically distributed on the lower surface of the top plate 3, the upper surface of the column 2 is fixedly connected to the top plate 3, the upper surface of the middle part of the top plate 3 is fixedly connected to the mounting plate 4, the upper surface of the mounting plate 4 is installed with a double-output shaft motor 5, the output end of the double-output shaft motor 5 is fixedly connected to a rotating shaft 6, the other end of the rotating shaft 6 is fixedly connected to a driving bevel gear 8, a winch wheel 9 is installed on the upper surface of the top plate 3, the number of the winch wheels 9 is four, and they are symmetrically distributed in pairs, the two winch wheels 9 on each side share a rotating shaft, the rotating shaft of the winch wheel 9 passes through the side of the winch wheel 9, and one end of the passing end is fixedly connected to a driven bevel gear 10, the surface of the driving bevel gear 8 The surface meshing transmission has a driven bevel gear 10, and the upper surface of the mounting plate 4 is fixedly connected to a support block 7, and the surface of the support block 7 is rotatably connected to a rotating shaft 6 through a bearing. There are two rotating shafts 6, two support blocks 7 and two active bevel gears 8, and they are symmetrically distributed on both sides of the dual-output shaft motor 5. A wire rope 91 is wound around the surface of the winch wheel 9, and the other end of the wire rope 91 is connected to a lifting plate 92. A groove 11 is provided on the inner side surface of the column 2, and a slider 14 is slidably connected to the surface of the groove 11. The surface of the slider 14 is fixedly connected to a limiting frame 15, and a limiting hole 16 is provided on the surface of the limiting frame 15. There are two servo motors 12, lead screws 13, sliders 14 and limiting frames 15, and they are symmetrically distributed. There are two upper limit holes 16 on each limiting frame 15, and the wire rope 91 passes through the limiting hole 16.

[0024] In order to achieve the purpose of improving the stability of the lifting mechanism during operation, when in use, the four-hanging-point lifting mechanism has the effect of improving the stability during operation through the arrangement of the lead screw 13, the slider 14, the limit frame 15 and the limit hole 16. When in use, the dual-output shaft motor 5 drives the rotating shaft 6 and the active bevel gear 8 on both sides to rotate, and the active bevel gear 8 then drives the driven bevel gear 10 to rotate, thereby rotating the rotating shaft of the winch wheel 9, and when the winch wheel 9 rotates, the wire rope 91 is wound or released, thereby driving the lifting plate 92 to complete the lifting. In the process of lifting the lifting plate 92, while controlling the dual-output shaft motor 5 to work, the servo motor 12 works synchronously, and the speeds of the dual-output shaft motor 5 and the servo motor 12 are adapted. The servo motor 12 drives the lead screw 13 to rotate, so that the slider 14 threadedly connected to the surface of the lead screw 13 slides in the groove 11. The sliding speed of the groove 11 is consistent with the lifting speed of the lifting plate 92, so that the limit frame 15 is maintained at a position about thirty centimeters above the lifting plate 92. The lifting plate 92 passes through the limit hole 16, and then in the process of the lifting and lowering of the lifting plate 92, the limit frame 15 is maintained above the lifting plate 92, and the wire rope 91 swings. Under the action of the limit frame 15 and the limit hole 16, the wire rope 91 is limited, so that the wire rope 91 always remains within a certain swinging range, thereby preventing the lifting plate 92 from shaking significantly, thereby achieving the purpose of improving the stability of the lifting mechanism.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A four-lifting-point lifting mechanism, comprising a support plate (1), a servo motor (12) and a lead screw (13), characterized in that: The upper surface of the support plate (1) is fixedly connected to a column (2), the upper surface of the column (2) is fixedly connected to a top plate (3), the upper surface of the middle portion of the top plate (3) is fixedly connected to a mounting plate (4), a dual-output shaft motor (5) is mounted on the upper surface of the mounting plate (4), the output end of the dual-output shaft motor (5) is fixedly connected to a rotating shaft (6), the other end of the rotating shaft (6) is fixedly connected to a driving bevel gear (8), a winch wheel (9) is mounted on the upper surface of the top plate (3), and the rotating shaft of the winch wheel (9) passes through the side of the winch wheel (9). The driven bevel gear (10) is meshed and driven on the surface of the driving bevel gear (8). A steel wire rope (91) is wound around the surface of the winch wheel (9). The other end of the steel wire rope (91) is connected to a lifting plate (92). A groove (11) is provided on the inner side surface of the column (2). A slider (14) is slidably connected to the surface of the groove (11). The surface of the slider (14) is fixedly connected to a limit frame (15). A limit hole (16) is provided on the surface of the limit frame (15).

2. A four-hanging-point lifting mechanism according to claim 1, characterized in that: The number of the support plates (1) and the columns (2) is two, and they are symmetrically distributed on the lower surface of the top plate (3).

3. A four-hanging-point lifting mechanism according to claim 1, characterized in that: A support block (7) is fixedly connected to the upper surface of the mounting plate (4); a rotating shaft (6) is rotatably connected to the surface of the support block (7) via a bearing; the rotating shaft (6), the support block (7) and the active bevel gear (8) are each two in number and symmetrically distributed on both sides of the dual-output shaft motor (5).

4. A four-hanging-point lifting mechanism according to claim 1, characterized in that: The number of the hoisting wheels (9) is four and they are symmetrically distributed in pairs, and the two hoisting wheels (9) on each side share a rotating shaft.

5. The four-hanging-point lifting mechanism according to claim 1, characterized in that: The number of the servo motor (12), the lead screw (13), the slider (14) and the limit frame (15) is two and they are symmetrically distributed.

6. A four-hanging-point lifting mechanism according to claim 5, characterized in that: Each of the limit frames (15) has two upper limit holes (16), and the steel wire rope (91) passes through the limit holes (16).

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