Double-beam bridge type hoisting equipment

Abstract

The utility model relates to the technical field of hoisting equipment, in particular to double-beam bridge type hoisting equipment. Comprising cross beams at the two ends and two parallel main beams arranged between the two cross beams, a telescopic rod is installed in the middle of a pulley yoke, the other end of the telescopic rod is connected with a supporting rod through a universal joint, an anti-swing mechanism is arranged at the bottom of the supporting rod, and the anti-swing mechanism comprises a sleeve. A plurality of groups of arc-shaped buffer plates for controlling the telescopic rod to swing are uniformly arranged in the sleeve, and the telescopic rod is positioned at the concave surface end of the buffer plate. The buffering device is simple in structure and low in manufacturing cost, under the action of the sleeve, the buffering plate, the damper, the elastic piece and other buffering components, swinging of objects is indirectly reduced by reducing swinging of the telescopic rod, and the purpose of stable conveying is achieved; and through cooperative use of the mounting groove, the screw rod, the locking nut and other parts, the anti-swing mechanism can be detachably mounted in the sleeve, and later replacement and mounting are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically to a double-beam bridge lifting device. Background Technology

[0002] Bridge cranes are lifting equipment that spans across workshops, warehouses, and material yards for material handling. Because their ends rest on tall concrete pillars or metal supports, they resemble bridges. The bridge frame of a bridge crane runs longitudinally along rails laid on elevated structures on both sides, making full use of the space beneath the bridge frame for material handling without being obstructed by ground equipment. It is the most widely used and numerous type of lifting machinery.

[0003] In existing technologies, during the operation of lifting equipment, the trolley moves on the main beam. Since the height of the object is changed by the contraction of the wire rope, it is impossible to reduce the left and right swaying of the wire rope due to inertia and other reasons during the lifting operation. This is extremely inconvenient to use. Traditional methods to solve the problem of lifting equipment swaying are to improve the precision of mechanical transmission, use frequency conversion control for the lifting mechanism, and add anti-sway function. However, this will increase the manufacturing cost of the crane and is not conducive to the market competitiveness of lifting equipment products. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a double-beam bridge lifting device that is simple in structure, low in manufacturing cost, and can reduce the swaying of objects during lifting.

[0005] To achieve the above technical objectives, this utility model proposes the following technical solution: a double-beam bridge crane, comprising crossbeams at both ends and two parallel main beams arranged between the two crossbeams. A crane trolley is mounted on the main beams. The crane trolley includes a frame, with a pulley assembly at the bottom of the frame. A drum for winding and unwinding wire rope is mounted on the frame. One end of the wire rope is wound and fixed to the drum, and the other end of the wire rope passes around the pulley assembly and connects to the frame. A support rod is provided at the bottom of the frame. The pulley assembly includes a pulley frame, with pulleys rotatably connected to both sides of the pulley frame. A hook is fixed at the bottom of the pulley frame. A telescopic rod is installed in the middle of the pulley frame. The other end of the telescopic rod is connected to the support rod via a universal joint. An anti-sway mechanism is provided at the bottom of the support rod. The anti-sway mechanism includes a sleeve, with multiple sets of arc-shaped buffer plates evenly arranged inside the sleeve to control the swaying of the telescopic rod. The telescopic rod is located at the concave end of the buffer plate.

[0006] Furthermore, both ends of the convex surface of the buffer plate are provided with spring pieces, and the convex end of the buffer plate is connected to the inner wall of the sleeve through damping.

[0007] Furthermore, the inner wall of the sleeve is provided with a limiting groove that matches the number of spring pieces, and one end of the limiting groove penetrates through the bottom of the sleeve.

[0008] Furthermore, a screw is installed on the side of the damper away from the buffer plate, and the bottom of the sleeve has an installation groove that matches the number of screws. The screw passes through the installation groove and is connected to a lock nut.

[0009] Furthermore, there are four buffer plates, evenly distributed around the outer perimeter of the telescopic rod.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the utility model has a simple structure and low manufacturing cost. Under the action of buffer components such as sleeve, buffer plate, damper and spring, the swaying of the telescopic rod is reduced, thereby indirectly reducing the swaying of the items and achieving the purpose of stable conveying. Through the cooperation of components such as mounting groove, screw and locking nut, the anti-sway mechanism can be detachably installed in the sleeve, which is convenient for later replacement and installation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the anti-sway mechanism of this utility model;

[0013] Figure 3 This is a top view of the anti-sway mechanism of this utility model.

[0014] In the diagram, 1. Crossbeam; 2. Main beam; 3. Frame; 4. Wire rope; 5. Drum; 6. Pulley assembly; 7. Support rod; 8. Pulley frame; 9. Pulley; 10. Hook; 11. Telescopic rod; 12. Sleeve; 13. Buffer plate; 14. Spring; 15. Damping; 16. Limiting groove; 17. Screw; 18. Mounting groove; 19. Locking nut. Detailed Implementation

[0015] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0016] This utility model provides a double-beam bridge crane, including crossbeams 1 at both ends and two parallel main beams 2 arranged between the two crossbeams 1. A crane trolley is mounted on the main beams 2. The crane trolley includes a frame 3, with wheels installed at each of the four corners of the frame 3. The wheels move along slide rails on the main beams 2. A pulley assembly 6 is provided at the bottom of the frame 3. A drum 5 for winding and unwinding wire rope 4 is mounted on the frame 3. A winch is provided on the frame 3 to control the rotation of the drum 5, thereby winding or unwinding the wire rope 4. One end of the wire rope 4 is wound and fixed on the drum 5, and the other end of the wire rope 4 passes over the slide rail. The wheel assembly 6 is connected to the frame 3. The frame 3 has a support rod 7 at its bottom. The pulley assembly 6 includes a pulley frame 8. Pulleys 9 are rotatably connected to both sides of the pulley frame 8. A hook 10 is fixed at the bottom of the pulley frame 8. A telescopic rod 11 is installed in the middle of the pulley frame 8. The other end of the telescopic rod 11 is connected to the support rod 7 through a universal joint. The bottom of the support rod 7 is provided with an anti-sway mechanism. The anti-sway mechanism includes a sleeve 12. One end of the sleeve 12 is fixed to the bottom of the support rod 7. Multiple sets of arc-shaped buffer plates 13 that control the swaying of the telescopic rod 11 are evenly arranged inside the sleeve 12. The telescopic rod 11 is located at the concave end of the buffer plate 13.

[0017] like Figure 1 As shown, the telescopic rod 11 is a non-powered telescopic rod, and its telescopic length can be extended and retracted as the steel wire rope 4 is extended and retracted. The telescopic rod 11 is located in the middle of the four steel wire ropes 4. In this embodiment, there are four buffer plates 13, which are evenly distributed in the sleeve 12 to wrap the telescopic rod 11. This can also be used to reduce the swaying of the item in various directions. When the swaying of the telescopic rod 11 is reduced, the swaying of the item can be indirectly reduced. The other end of the telescopic rod 11 is located in the sleeve 12, and the purpose of reducing the swaying of the telescopic rod 11 is achieved through the arc-shaped buffer plate 13.

[0018] Both ends of the convex surface of the buffer plate 13 are fixedly connected with spring pieces 14, and the convex end of the buffer plate 13 is connected to the inner wall of the sleeve 12 through damping 15.

[0019] like Figure 1 As shown, the use of damping 15 can quickly bring the spring 14 to a stop. When the crane trolley brakes or stops in an emergency, it can act as a buffer, further reducing the sway of the object due to inertia and other reasons.

[0020] The inner wall of the sleeve 12 is provided with a limiting groove 16 that matches the number of spring pieces 14. One end of the limiting groove 16 passes through the bottom of the sleeve 12. A screw 17 is installed on the side of the damper 15 away from the buffer plate 13. The bottom of the sleeve 12 is provided with a mounting groove 18 that matches the number of screws 17. The screws 17 pass through the mounting groove 18 and are connected to a locking nut 19.

[0021] like Figure 1As shown, since the anti-sway mechanism is a consumable, in this embodiment, the anti-sway mechanism is detachably installed in the sleeve 12. Specifically, when it needs to be replaced, the locking nut 19 is unscrewed and the screw 17 is pulled down. The screw 17 drives the spring piece 14 to move downward, so that one end of the spring piece 14 is disengaged from the limiting groove 16, thus completing the removal of the anti-sway mechanism. During installation, the screw 17 is inserted into the mounting groove 18 from bottom to top, and one end of the spring piece 14 is inserted into the limiting groove 16. The washer and the locking nut 19 are placed on the screw 17 in sequence, and the locking nut 19 is tightened to lock it. When the locking nut 19 is tightened, one end of the spring piece 14 will be pressed against the limiting groove 16.

[0022] Operating principle: When it is necessary to lift goods, start the drum 5, release the wire rope 4, and the pulley assembly 6 and hook 10 move downward under the action of gravity. The telescopic rod 11 is unfolded with the movement of the pulley assembly 6 and hook 10. After the hook 10 hooks the goods, start the crane trolley. When the crane trolley moves left and right on the main beam 2, the telescopic rod 11 is located in the concave surface of the buffer plate 13. When the goods sway left and right, the left and right sway of the telescopic rod 11 is reduced by the buffer plate 13, the damper 15 and the spring plate 14. The stability of the telescopic rod 11 indirectly reduces the sway of the goods, thus achieving the goal of reducing the sway of the goods.

[0023] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A double-beam bridge crane, comprising two crossbeams (1) at both ends and two parallel main beams (2) arranged between the two crossbeams (1), a crane trolley is mounted on the main beams (2), the crane trolley comprises a frame (3), a pulley assembly (6) is provided at the bottom of the frame (3), a drum (5) for winding and unwinding wire rope (4) is mounted on the frame (3), one end of the wire rope (4) is wound and fixed on the drum (5), and the other end of the wire rope (4) passes around the pulley assembly (6) and is connected to the frame (3), characterized in that: The bottom of the frame (3) is provided with a support rod (7), the pulley assembly (6) includes a pulley frame (8), pulleys (9) are rotatably connected to both sides of the pulley frame (8), a hook (10) is fixed at the bottom of the pulley frame (8), a telescopic rod (11) is installed in the middle of the pulley frame (8), the other end of the telescopic rod (11) is connected to the support rod (7) through a universal joint, the bottom of the support rod (7) is provided with an anti-sway mechanism, the anti-sway mechanism includes a sleeve (12), a plurality of arc-shaped buffer plates (13) for controlling the swaying of the telescopic rod (11) are evenly provided in the sleeve (12), and the telescopic rod (11) is located at the concave end of the buffer plate (13).

2. The double-girder bridge crane according to claim 1, characterized in that: Both ends of the convex surface of the buffer plate (13) are provided with spring pieces (14), and the convex end of the buffer plate (13) is connected to the inner wall of the sleeve (12) through damping (15).

3. The double-girder bridge crane according to claim 2, characterized in that: The inner wall of the sleeve (12) is provided with a limiting groove (16) that matches the number of spring pieces (14), and one end of the limiting groove (16) penetrates the bottom of the sleeve (12).

4. The double-girder bridge crane according to claim 2, characterized in that: A screw (17) is installed on the side of the damper (15) away from the buffer plate (13). The bottom of the sleeve (12) is provided with an installation groove (18) that matches the number of screws (17). The screws (17) pass through the installation groove (18) and are connected to a locking nut (19).

5. The double-girder bridge crane according to claim 1, characterized in that: There are four buffer plates (13), which are evenly distributed around the outer periphery of the telescopic rod (11).

Images