Anti-swing bridge crane

Abstract

The utility model relates to the technical field of hoisting equipment, in particular to an anti-swing bridge crane which comprises a bridge frame, an electric hoist mounted on the bridge frame, a telescopic limiting mechanism fixedly connected to the bottom of the electric hoist, a first mounting plate fixedly connected to the bottom of the telescopic limiting mechanism, and a second mounting plate mounted below the first mounting plate. A first spring is fixedly connected between the first mounting plate and the second mounting plate, a lifting hook is hinged to the bottom of the second mounting plate, a guide cylinder is hinged to the bottom of the second mounting plate, a guide rod is slidably connected into the guide cylinder, a second spring is fixedly connected between the guide cylinder and the guide rod, and the guide rod is hinged to the lifting hook; a lifting rope is wound around the electric hoist, and the free end of the lifting rope is fixedly connected to the top of the second mounting plate. According to the utility model, the first spring and the second spring are arranged, so that the acting force of goods swinging can be conveniently unloaded, the acting force of goods swinging on the telescopic limiting mechanism can be reduced, and the service life of the telescopic limiting mechanism can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to a sway-preventing bridge crane. Background Art

[0002] A bridge crane is a lifting equipment that spans over workshops, warehouses, and yards for material lifting. The bridge of the bridge crane runs longitudinally along the tracks laid on both sides of the high racks, and can make full use of the space under the bridge to lift materials without being hindered by ground equipment. It is one of the most widely used and most numerous lifting machines.

[0003] During the process of moving the lifted goods, due to the influence of inertia, the goods will swing to both sides in the air, which will pull the lifting rope and thus affect the service life of the lifting rope. Seriously, it may even cause the lifted goods to fall off. In order to prevent the lifting rope from swaying during work, existing bridge cranes usually add a rigid limit frame at the bottom of the electric hoist. However, when the limit frame restricts the swaying of the lifting rope, the acting force of the swaying of the goods will be transmitted to the limit frame through the lifting rope, and the limit frame will be deformed or even broken due to frequent stress, thus affecting the service life of the limit frame. Therefore, there are still disadvantages and deficiencies in the prior art. Summary of the Utility Model

[0004] The utility model provides a sway-preventing bridge crane to solve the problems raised in the background art.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is: a sway-preventing bridge crane, including a bridge, an electric hoist is installed on the bridge, a telescopic limit mechanism is fixedly connected to the bottom of the electric hoist, a first mounting plate is fixedly connected to the bottom of the telescopic limit mechanism, a through hole is opened on the first mounting plate, a second mounting plate is installed below the first mounting plate, a first spring is fixedly connected between the first mounting plate and the second mounting plate, a hook is hinged to the bottom of the second mounting plate, guide cylinders are hinged to the bottom of the second mounting plate on both sides of the hook, guide rods are slidably connected in the guide cylinders, a second spring is fixedly connected between the top wall inside the guide cylinder and the guide rod, and the end of the guide rod away from the guide cylinder is hinged to the hook; a lifting rope is wound on the electric hoist, and the free end of the lifting rope sequentially passes through the telescopic limit mechanism, the through hole and is fixedly connected to the top of the second mounting plate.

[0006] Preferably, fixed pulleys are rotatably connected to both sides inside the through hole, the lifting rope is installed between the two fixed pulleys, and the lifting rope is slidably connected to the through hole through the fixed pulleys.

[0007] Preferably, the telescopic limit mechanism includes a mounting frame, the top of the mounting frame is fixedly connected to the electric hoist, and four vertically arranged telescopic rods are fixedly connected between the mounting frame and the first mounting plate.

[0008] Preferably, a connecting rod is fixedly connected between adjacent telescopic rods.

[0009] The beneficial effects of the present utility model are as follows: (1) By providing the first spring and the second spring, the present utility model facilitates the removal of the acting force of the swinging of the goods, thereby reducing the acting force of the swinging of the goods on the telescopic limit mechanism, and further prolonging the service life of the telescopic limit mechanism. At the same time, since the force of the swinging of the goods is removed, the swinging amplitude of the goods can be reduced, and thus the stability of lifting the goods can be improved; (2) By providing two fixed pulleys in the through hole, the guiding of the lifting rope is facilitated, thereby reducing the wear of the lifting rope when the goods swing, and further prolonging the service life of the lifting rope. Description of the Drawings

[0010] Figure 1 is a schematic structural diagram of the present utility model;

[0011] Figure 2 is a schematic structural diagram of the connection of the electric hoist, the telescopic limit mechanism and the hook of the present utility model;

[0012] Figure 3 is a schematic cross-sectional structural diagram of the fixed pulley and the guiding cylinder of the present utility model.

[0013] Reference numerals: 1, bridge; 2, electric hoist; 3, first mounting plate; 4, through hole; 5, first spring; 6, second mounting plate; 7, hook; 8, guiding cylinder; 9, second spring; 10, guide rod; 11, lifting rope; 12, fixed pulley; 13, mounting frame; 14, telescopic rod; 15, connecting rod. Detailed Embodiments

[0014] The present utility model will be further described below with reference to the drawings. The following description is based on the directions in the Figure 1 drawings.

[0015] As Figures 1-3As shown in the figure, the utility model provides an anti-sway type bridge crane, which includes a bridge frame 1. An electric hoist 2 is installed on the bridge frame 1. The bottom of the electric hoist 2 is fixedly connected with a telescopic limit mechanism. The bottom of the telescopic limit mechanism is fixedly connected with a first mounting plate 3. A through hole 4 is opened on the first mounting plate 3. A second mounting plate 6 is installed below the first mounting plate 3. A first spring 5 is fixedly connected between the first mounting plate 3 and the second mounting plate 6. In this embodiment, there are four first springs 5, and the four first springs 5 are respectively located at the four corners of the first mounting plate 3. A hook 7 is hinged to the bottom of the second mounting plate 6. Guide cylinders 8 are hinged to the bottom of the second mounting plate 6 on both sides of the hook 7. A guide rod 10 is slidably connected in the guide cylinder 8. A second spring 9 is fixedly connected between the top wall inside the guide cylinder 8 and the guide rod 10. The end of the guide rod 10 away from the guide cylinder 8 is hinged to the hook 7. A lifting rope 11 is wound on the electric hoist 2. The free end of the lifting rope 11 sequentially passes through the telescopic limit mechanism and the through hole 4 and is fixedly connected to the top of the second mounting plate 6.

[0016] Specifically, when in use, when the goods sway, the goods drive the hook 7 to sway. When the hook 7 sways to the left, the hook 7 squeezes the second spring 9 on the left and stretches the second spring 9 on the right through the guide rod 10, so that the second spring 9 can relieve a part of the force of the goods sway. At the same time, the force of the goods sway is also transmitted to the first spring 5 through the hook 7, the guide rod 10, the second spring 9, the guide cylinder 8, and the second mounting plate 6, and the first spring 5 further relieves the force of the goods sway, so as to reduce the acting force of the goods sway on the telescopic limit mechanism, and further extend the service life of the telescopic limit mechanism.

[0017] The utility model is provided with the first spring 5 and the second spring 9 to relieve the acting force of the goods sway, so as to reduce the acting force of the goods sway on the telescopic limit mechanism, and further be able to extend the service life of the telescopic limit mechanism. At the same time, since the force of the goods sway is relieved, the sway amplitude of the goods can be reduced, and further the stability of lifting the goods can be improved.

[0018] In some embodiments, fixed pulleys 12 are rotatably connected to both sides inside the through hole 4. The lifting rope 11 is installed between the two fixed pulleys 12. The lifting rope 11 is slidably connected to the through hole 4 through the fixed pulleys 12. Specifically, when the goods sway, the first spring 5 will be compressed or stretched. At this time, the distance between the first mounting plate 3 and the second mounting plate 6 will change, so that friction occurs between the through hole 4 and the lifting rope 11, resulting in wear of the lifting rope 11. By providing the fixed pulleys 12, the lifting rope 11 can be guided, so as to reduce the wear of the lifting rope 11 when the goods sway, and further extend the service life of the lifting rope 11.

[0019] In some embodiments, the telescopic limit mechanism includes a mounting frame 13. The top of the mounting frame 13 is fixedly connected to the electric hoist 2. The free end of the lifting rope 11 passes through the mounting frame 13. Four vertically arranged telescopic rods 14 are fixedly connected between the mounting frame 13 and the first mounting plate 3. The four telescopic rods 14 are respectively located at the four corners of the mounting frame 13. Specifically, during use, the four telescopic rods 14 extend as the hook 7 descends. When the hook 7 swings, the four telescopic rods 14 can stably support the first mounting plate 3, and the first mounting plate 3 then supports the hook 7 through the first spring 5, the second mounting plate 6, the guide cylinder 8, the second spring 9, and the guide rod 10, thereby reducing the swing amplitude of the goods and further improving the stability of lifting the goods.

[0020] In some embodiments, a connecting rod 15 is fixedly connected between adjacent telescopic rods 14. To ensure the telescoping of the telescopic rods 14, as Figure 2 shown, the connecting rod 15 is close to the mounting frame 13. Specifically, the adjacent telescopic rods 14 are fixedly connected through the connecting rod 15, thereby improving the stability of the telescopic limit mechanism and further improving the stability of lifting the goods.

[0021] The above embodiments can be combined with each other.

[0022] The above embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the present invention. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention all belong to the protection scope of the technical solution of the present invention.

Claims

1. A sway-preventing type bridge crane, comprising a bridge frame, on which an electric hoist is installed, characterized in that: A telescopic limit mechanism is fixedly connected to the bottom of the electric hoist. The bottom of the telescopic limit mechanism is fixedly connected to a first mounting plate. A through hole is provided in the first mounting plate. A second mounting plate is installed below the first mounting plate. A first spring is fixedly connected between the first mounting plate and the second mounting plate. A hook is hinged to the bottom of the second mounting plate. Guide cylinders are hinged to the bottom of the second mounting plate on both sides of the hook. A guide rod is slidably connected in the guide cylinder. A second spring is fixedly connected between the top wall inside the guide cylinder and the guide rod. The end of the guide rod away from the guide cylinder is hinged to the hook; A lifting rope is wound around the electric hoist. The free end of the lifting rope sequentially passes through the telescopic limit mechanism, the through hole and is fixedly connected to the top of the second mounting plate.

2. The anti-sway type bridge crane according to claim 1, characterized in that: Fixed pulleys are rotatably connected to both sides inside the through hole. The lifting rope is installed between the two fixed pulleys. The lifting rope is slidably connected to the through hole through the fixed pulleys.

3. The anti-sway type bridge crane according to claim 1, characterized in that: The telescopic limit mechanism includes a mounting frame. The top of the mounting frame is fixedly connected to the electric hoist. Four vertically arranged telescopic rods are fixedly connected between the mounting frame and the first mounting plate.

4. The anti-sway type bridge crane according to claim 3, characterized in that: Connecting rods are fixedly connected between adjacent telescopic rods.

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