Stable lifting device of single-beam crane

Abstract

The utility model discloses a stable hoisting device of a single-beam crane, which belongs to the field of cranes, is symmetrically arranged on a stand column of the single-beam crane, and structurally comprises an arc-shaped horizontal bent rail and a movable tractor, the horizontal bent rail comprises a left half rail and a right half rail, and the horizontal bent rail is matched with the surface shape of the stand column through an embedding groove; and the stability of the structure is ensured. Due to the design of the C-shaped base of the movable tractor, the driving wheel and the driven wheel can stably clamp the inner wall of the bent rail, the auxiliary wheel provides additional support, and the stability of movement on the horizontal bent rail is enhanced. The movable tractor is divided into a walking mechanism and a traction mechanism. The walking mechanism moves left and right along the horizontal bent rail, the traction mechanism controls a traction rope through an electric winding drum, and accurate traction of a lifting hook weight is achieved. And traditional manual traction control is effectively replaced, the operation risk is reduced, and the operation efficiency is improved. The overall design realizes automatic control, optimizes the hoisting process, and is suitable for various industrial scenes.

Description

Technical Field

[0001] The utility model relates to the field of cranes, in particular to a stable lifting device for a single-beam crane. Background Art

[0002] A single-girder crane is a type of lifting equipment with a simple structure and easy operation. It is mainly composed of a metal beam, a crane, an operating mechanism, and a control system. It moves the crane on the metal beam to achieve vertical lifting and horizontal movement of heavy objects.

[0003] In actual lifting operations, the uneven shape and weight distribution of some heavy objects can cause a shift in the center of gravity, increasing lifting instability. Furthermore, using inappropriate lifting equipment, such as hooks and slings, can lead to uneven weight distribution, resulting in swaying during lifting. Furthermore, environmental factors such as wind, operator inexperience with crane operation, and excessive or uneven lifting speeds can all contribute to unstable lifting, causing the object to sway, tilt, or rotate, preventing smooth lifting operations. On the one hand, unstable lifting interrupts operations, prolongs work time, and reduces efficiency. On the other hand, the resulting swinging of the heavy object can collide with surrounding equipment or personnel, causing damage or personal injury. Traditional solutions often involve manually tying ropes to the hook or heavy object and controlling the object's sway by pulling. However, this method relies on worker experience and requires constant movement to control the load. It also poses safety risks, as excessive swaying can easily cause people to fall, leading to various safety accidents. Utility Model Content

[0004] The main purpose of the utility model is to provide a stable lifting device for a single-beam crane, which can effectively solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A stable lifting device for a single-beam crane comprises a pair of uprights and a crossbeam erected on the top of the uprights, a self-propelled crane being movably mounted on the crossbeam, a hook being connected to the bottom of the crane via a steel cable, the uprights being H-shaped steel, a stable traction device being fixedly mounted on the inner side of each upright, and the two stable traction devices being symmetrical to each other, the stable traction device being composed of an arc-shaped horizontal curved rail and a movable tractor, the movable tractor being divided into a walking mechanism and a traction mechanism, wherein the walking mechanism being movably connected to the horizontal curved rail and being movable along the horizontal curved rail, the traction mechanism being connected to the hook via an internally electrically reeled traction rope.

[0007] Preferably, the horizontal curved rail consists of a left half rail and a right half rail, the left half rail and the right half rail are I-beams with the same curvature, and the butt ends of the left half rail and the right half rail are both provided with embedding grooves, which fit the surface shape of the column, so that the left half rail and the right half rail are butt-jointed and fixedly welded to the column.

[0008] Preferably, a sealing plate is fixedly mounted on both ends of the left half rail and the right half rail respectively.

[0009] Preferably, the walking mechanism of the mobile tractor includes a C-shaped base, and a group of driving wheels and a group of driven wheels are symmetrically installed on the inner walls on both sides of the C-shaped base. The size of the C-shaped base is adapted to the horizontal curved rail and is just engaged with the horizontal curved rail, and the driving wheel and the driven wheel are clamped on the inner wall of the horizontal curved rail. An auxiliary wheel is also installed on the bottom surface of the inner wall of the C-shaped base, and the auxiliary wheel is against the outer surface of the horizontal curved rail.

[0010] Preferably, a drive box is fixedly mounted on the top of the C-shaped base, a drive motor is provided in the drive box, and an output end of the drive motor is connected to the drive wheel.

[0011] Preferably, the traction mechanism of the mobile traction device includes a traction box, which is fixedly mounted on the C-shaped base. A drum is provided inside the traction box, and a winch motor is installed on the side of the traction box to drive the drum, and the traction rope is wound on the drum.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the utility model, a pair of stable traction devices are symmetrically installed on the columns of the single-beam crane. The stable traction device consists of a horizontal curved rail and a mobile traction device, and the mobile traction device consists of a walking mechanism and a traction mechanism. The walking mechanism is installed on the horizontal curved rail and moves left and right along the horizontal curved rail. The traction mechanism is installed on the walking mechanism and is tied to the hook with its own traction rope. The traction mechanism is used to pull the heavy object and the walking mechanism moves left and right to change direction. The two stable traction devices work synchronously, thereby replacing manual traction to control the stability of the heavy object, which is safer and more efficient than the traditional method. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the stable traction device of the utility model;

[0016] Figure 3 This is a schematic diagram of the partial structure of the stable traction device of the utility model;

[0017] Figure 4 This is a schematic diagram of the overall structure of the mobile tractor of the present utility model;

[0018] Figure 5 This is a schematic diagram of the assembly of the mobile tractor and the horizontal curved rail of the utility model.

[0019] In the figure: 1. Column; 2. Crossbeam; 3. Crane; 4. Hook; 5. Stabilizing traction device; 6. Horizontal curved rail; 7. Left half-rail; 8. Right half-rail; 9. Mobile traction device; 10. Mounting groove; 11. Closing plate; 12. C-type base; 13. Driving wheel; 14. Driving box; 15. Driven wheel; 16. Auxiliary wheel; 17. Traction box; 18. Winch motor; 19. Traction rope. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1 As shown, a stable lifting device for a single-beam crane includes a pair of columns 1 and a crossbeam 2 erected on the top of the columns 1. A self-propelled crane 3 is movably installed on the crossbeam 2. A hook 4 is connected to the bottom of the crane 3 through a steel cable. The columns 1 are H-shaped steel. A stable traction device 5 is fixedly installed on the inner side of each column 1. The two stable traction devices 5 are symmetrical to each other and can pull the weights on the hooks 4 from both sides respectively. The two stable traction devices 5 work synchronously to pull the weights to form a force balance, thereby ensuring stable lifting.

[0022] like Figure 2 、 Figure 3 As shown, the stable traction device 5 includes an arc-shaped horizontal curved rail 6, which is composed of a left half-rail 7 and a right half-rail 8. The left half-rail 7 and the right half-rail 8 are I-beams with the same curvature, which are convenient for forming a track for the mobile tractor 9 to move. The butt ends of the left half-rail 7 and the right half-rail 8 are both provided with an embedding groove 10. The embedding groove 10 fits the surface shape of the column 1, so that the left half-rail 7 and the right half-rail 8 are butt-jointed and fixedly welded to the column 1, and a certain gap is reserved so that the mobile tractor 9 can pass smoothly. A sealing plate 11 is fixedly installed at both ends of the left half-rail 7 and the right half-rail 8 to prevent the column 1 from detaching from the horizontal curved rail 6 at both ends. The length and curvature of the entire horizontal curved rail 6 are selected according to the size of the actual lifting scene and the size of the heavy object.

[0023] like Figure 4 、 Figure 5 As shown, the stable traction device 5 further includes a mobile traction device 9, which is divided into two parts: a walking mechanism and a traction mechanism.

[0024] The traveling mechanism of the mobile tractor 9 includes a C-shaped base 12, with a set of driving wheels 13 and a set of driven wheels 15 symmetrically mounted on the inner walls of both sides of the C-shaped base 12. The size of the C-shaped base 12 is adapted to the horizontal curved rail 6, and it fits onto the horizontal curved rail 6. The driving wheels 13 and the driven wheels 15 are clamped to the inner wall of the horizontal curved rail 6. An auxiliary wheel 16 is also mounted on the bottom surface of the inner wall of the C-shaped base 12, and the auxiliary wheel 16 is pressed against the outer surface of the horizontal curved rail 6, thus forming a stable mobile base to ensure that the C-shaped base 12 can slide along the horizontal curved rail 6. A drive box 14 is fixedly mounted on the top of the C-shaped base 12, and the drive box 14 is equipped with a drive motor, and the output end of the drive motor is connected to the drive wheel 13.

[0025] The traction mechanism of the mobile tractor 9 includes a traction box 17, which is fixedly mounted on the C-shaped base 12. A drum is provided inside the traction box 17, and a winch motor 18 is installed on the side of the traction box 17 to drive the drum, and a traction rope 19 is wound on the drum.

[0026] In actual application, it is first necessary to select a horizontal curved rail 6 of appropriate length and curvature according to the actual lifting scenario, that is, a left half rail 7 and a right half rail 8 of different specifications, but the mounting groove 10 at the butt end of the left half rail 7 and the right half rail 8 remains unchanged. The two still fit the surface of the column 1 and are symmetrically welded to the column 1. Moreover, the inner circle of the horizontal curved rail 6 formed after welding protrudes out of a part of the surface of the column 1 to ensure that the mobile tractor 9 can pass normally when passing through the column 1.

[0027] During specific operation, after the hook 4 hooks the weight, the traction ropes 19 on both sides are also tied to the hook 4 or the weight, and the hoisting motor 18 is started to tighten the traction ropes 19. Then the crane 3 is started to lift the weight. When the weight leaves the ground, the weight will shake due to the change in center of gravity; and when it moves laterally, the weight will also shake due to the effect of initial inertia. At this time, the two stable traction devices 5 can be operated separately. First, the drive motor inside the drive box 14 is started. By using the rolling of the drive wheel 13 and the cooperation of the driven wheel 15 and the auxiliary wheel 16, the movement of the C-shaped base 12 is controlled to move the entire mobile traction device 9 to the opposite or similar position of the weight shaking. Then, the hoisting motor 18 is operated to slowly rotate forward or reverse, sending out or retracting the traction rope 19, so as to slowly control the shaking amplitude of the weight until the weight stabilizes and ensure the stability of the lifting process.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A stable lifting device for a single-beam crane, comprising a pair of columns (1) and a crossbeam (2) mounted on the top of the columns (1), a self-propelled crane (3) movably mounted on the crossbeam (2), and a hook (4) connected to the bottom of the crane (3) via a steel cable, characterized in that: The columns (1) are H-shaped steels. A stable traction device (5) is fixedly installed on the inner side of each column (1), and the two stable traction devices (5) are symmetrical to each other. The stable traction device (5) is composed of an arc-shaped horizontal curved rail (6) and a movable traction device (9). The movable traction device (9) is divided into two parts: a walking mechanism and a traction mechanism. The walking mechanism is movably connected to the horizontal curved rail (6) and can move along the horizontal curved rail (6). The traction mechanism is connected to the hook (4) through an internal electrically retracted traction rope (19).

2. The stable lifting device for a single-girder crane according to claim 1, characterized in that: The horizontal curved rail (6) is composed of a left half rail (7) and a right half rail (8), wherein the left half rail (7) and the right half rail (8) are I-beams with the same curvature, and the butt joint ends of the left half rail (7) and the right half rail (8) are both provided with an embedding groove (10), and the embedding groove (10) fits the surface shape of the column (1), so that the left half rail (7) and the right half rail (8) are butt jointed and fixedly welded to the column (1).

3. The stable lifting device for a single-girder crane according to claim 2, characterized in that: A sealing plate (11) is fixedly mounted on both ends of the left half rail (7) and the right half rail (8).

4. The stable lifting device for a single-girder crane according to claim 3, characterized in that: The walking mechanism of the mobile tractor (9) includes a C-shaped base (12), and a group of driving wheels (13) and a group of driven wheels (15) are symmetrically installed on the inner walls of both sides of the C-shaped base (12). The size of the C-shaped base (12) is adapted to the horizontal curved rail (6) and is just engaged with the horizontal curved rail (6). The driving wheel (13) and the driven wheel (15) are clamped on the inner wall of the horizontal curved rail (6). An auxiliary wheel (16) is also installed on the bottom surface of the inner wall of the C-shaped base (12), and the auxiliary wheel (16) is against the outer surface of the horizontal curved rail (6).

5. The stable lifting device for a single-girder crane according to claim 4, characterized in that: A driving box (14) is fixedly mounted on the top of the C-shaped base (12). A driving motor is provided in the driving box (14), and an output end of the driving motor is connected to the driving wheel (13).

6. The stable lifting device for a single-girder crane according to claim 5, characterized in that: The traction mechanism of the mobile tractor (9) includes a traction box (17) fixedly mounted on the C-shaped base (12), a drum is provided inside the traction box (17), and a hoisting motor (18) is installed on the side of the traction box (17) to drive the drum, and the traction rope (19) is wound on the drum.

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