Double-beam bridge crane with double lifting points

Abstract

The utility model provides a double-beam bridge crane with double lifting points, which comprises a bridge frame and a crane carriage arranged on the bridge frame, two groups of lifting winding drums are arranged on the crane carriage, the lifting winding drums are connected with a lifting appliance through steel wire ropes, and two ends of two trolley end beams are respectively provided with a trolley travelling mechanism; winding drum supports are arranged on the upper sides of the two trolley end beams respectively, lifting winding drums are installed on the two winding drum supports respectively, the middles of the two trolley main beams are connected through a supporting beam, a motor and a speed reducer are arranged on the upper side of the supporting beam, and the speed reducer is located between the lifting winding drums and connected with the two lifting winding drums to form a linear shape. The output end of the motor is connected with the input end of the speed reducer, and the output end of the speed reducer is connected with the two lifting winding drums. According to the double-lifting-point double-beam bridge type crane, the two sets of lifting winding drums are synchronously driven through the motor and the speed reducer, synchronous operation of the lifting winding drums is fully guaranteed, and the stability of the lifting winding drums is fully guaranteed by arranging the supports at the two ends of the lifting winding drums correspondingly.

Description

Technical Field

[0001] This utility model relates to a lifting device, specifically, to a double-beam bridge crane with two lifting points, used for lifting cylindrical or canister-like heavy objects. Background Technology

[0002] Bridge cranes are lifting equipment that spans across workshops, warehouses, and material yards for material handling. They are named for their bridge-like shape, as the two ends of the bridge frame rest on tall concrete pillars or metal supports. The bridge frame of a bridge crane runs longitudinally along rails laid on elevated supports on both sides, while the lifting trolley runs laterally along rails laid on the bridge frame, forming a rectangular working area. Bridge cranes can fully utilize the space beneath the bridge frame for material handling, without being obstructed by ground equipment, making them the most widely used and numerous type of lifting machinery.

[0003] There are many types of bridge cranes on the market. In order to improve the stability of lifting, many devices use multiple lifting points. For example, Chinese Patent CN215326547U discloses a double-lifting-point double-main-girder bridge crane, and Chinese Patent CN218560900U discloses a double-lifting-point double-main-girder bridge crane. However, the hoisting mechanism in Chinese Patent CN215326547U is suspended, and the structural stability is relatively poor. In Chinese Patent CN218560900U, two sets of lifting trolleys are assembled, and the two lifting trolleys are connected to hooks respectively to form double lifting points. It is difficult to ensure that the two lifting points are raised and lowered synchronously.

[0004] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a double-beam bridge crane with two lifting points.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A double-girder bridge crane with two lifting points includes a bridge frame and a lifting trolley mounted on the bridge frame. The lifting trolley is equipped with two sets of lifting drums, which are connected to a lifting device via wire ropes. The lifting trolley includes two parallel main beams, with end beams connecting both ends. The end beams and main beams form a rectangular frame, and a trolley traveling mechanism is mounted at each end of the end beams. Drum supports are mounted on the upper sides of the end beams, and lifting drums are mounted on the supports. The middle sections of the two main beams are connected by a support beam. A motor and a reducer are mounted on the upper side of the support beam. The reducer is located between the lifting drums and connects them in a straight line. The output of the motor is connected to the input of the reducer, and the output of the reducer is connected to the two lifting drums.

[0008] Each of the two trolley main beams is equipped with several guide pulleys and wire rope fixing seats. The wire rope fixing seats are located in the middle of the trolley main beams. Several lifting pulleys are correspondingly installed on the upper side of the lifting device. The wire rope of the lifting drum passes through the guide pulleys and lifting pulleys and connects to the wire rope fixing seats.

[0009] Two sets of first pulleys are installed on the upper side of the trolley main beam, and two sets of second pulleys are installed on the front or rear side of the trolley main beam. The two sets of first pulleys are located on both sides of the wire rope fixing seat, and the two sets of second pulleys are located on both sides of the wire rope fixing seat. The pulleys on the two trolley main beams are symmetrical to each other. The two sets of first pulleys on the trolley main beams are coaxially arranged and their central axis is parallel to the central axis of the hoisting drum. The two symmetrical second pulleys on the two trolley main beams are coaxially arranged and their central axis is perpendicular to the central axis of the hoisting drum.

[0010] The lifting device includes a ring-shaped hanger. A set of symmetrical hooks is provided on the lower side of the ring-shaped hanger. Two sets of symmetrical third pulleys and two sets of symmetrical fourth pulleys are provided on the upper side of the ring-shaped hanger. The central axis of the third pulley is parallel to the central axis of the first pulley, and the central axis of the fourth pulley is parallel to the central axis of the second pulley. The fourth pulley is located directly below the wire rope fixing seat.

[0011] The ring-shaped hanger has a rectangular inner frame inside, and a mounting base is connected inside the rectangular inner frame. A horizontal support is connected to the lower side of the mounting base, and the outer side of the rectangular inner frame is connected to the ring-shaped hanger by a connecting rod.

[0012] The horizontal support frame includes several first hinge rods hinged to the lower side of the mounting base and a telescopic mechanism set on the upper side of the mounting base. Each first hinge rod is evenly arranged around the telescopic mechanism. The telescopic end of the telescopic mechanism is connected to a transmission block. The free end of the first hinge rod is hinged to a second hinge rod. The first hinge rod is a straight rod, and the second hinge rod is an L-shaped rod arranged laterally. The transmission block is hinged to the middle of the L-shaped rod, and the other end of the L-shaped rod is hinged to a support block.

[0013] Compared to existing technologies, the advantages of this invention are as follows: This invention provides a double-beam bridge crane with two lifting points. Two sets of lifting drums are coaxially arranged, and the two sets of lifting drums are synchronously driven by a motor and a reducer, ensuring synchronized operation of the lifting drums. Supports are installed at both ends of the lifting drums to ensure their stability. Simultaneously, four sets of pulleys guide the connection to the lifting device, facilitating lifting. Furthermore, the lifting device is equipped with hooks and horizontal supports, facilitating the lifting of cylindrical heavy objects such as drums / canisters. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a structural schematic diagram of the lifting trolley in this utility model.

[0016] In the diagram: 1. Cable tray; 2. Crane trolley; 3. Lifting device; 4. Trolley end beam; 5. Trolley main beam; 6. Trolley traveling mechanism; 7. Drum support; 8. Lifting drum; 9. Support beam; 10. Motor; 11. Reducer; 12. First pulley; 13. Second pulley; 14. Third pulley; 15. Fourth pulley; 16. Circular hanger; 17. Mounting base; 18. Support block; 19. First hinge rod; 20. Second hinge rod. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. "Installed," "equipped with," and "connected" can employ conventional means in the prior art, such as integral installation, snap-fit ​​installation, welding connection, adhesive connection, bolted connection, etc. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances and select suitable connection, setting, or installation methods from the existing technology.

[0019] like Figure 1-2As shown, a double-beam bridge crane with two lifting points includes a bridge frame 1 and a lifting trolley 2 mounted on the bridge frame 1. The lifting trolley 2 is equipped with two sets of lifting drums 8, which are connected to the lifting device 3 by wire ropes. The lifting trolley 2 includes two parallel trolley main beams 5, with trolley end beams 4 at both ends. The trolley end beams 4 and the trolley main beams 5 form a rectangular frame. Trolley traveling mechanisms 6 are respectively mounted at both ends of the two trolley end beams 4. Drum supports 7 are respectively mounted on the upper side of the two trolley end beams 4, and lifting drums 8 are respectively mounted on the two drum supports 7. The middle of the two trolley main beams 5 is connected by a support beam 9. A motor 10 and a reducer 11 are mounted on the upper side of the support beam 9. The reducer 11 is located between the lifting drums 8 and connects the two lifting drums 8 in a straight line. The output end of the motor 10 is connected to the input end of the reducer 11, and the output end of the reducer 11 is connected to the two lifting drums 8. Two sets of hoisting drums are coaxially arranged and driven synchronously by a motor and a reducer to ensure synchronous operation of the hoisting drums. Supports are set at both ends of the hoisting drums to ensure their stability.

[0020] In one embodiment, the two trolley main beams 5 are respectively provided with a number of guide pulleys and wire rope fixing seats. The wire rope fixing seats are located in the middle of the trolley main beams 5. The upper side of the lifting device 3 is provided with a number of lifting pulleys. The wire rope of the lifting drum 8 passes through the guide pulleys and lifting pulleys and connects to the wire rope fixing seats, so as to facilitate the connection between the lifting device and the lifting drum through the wire rope.

[0021] In one embodiment, two sets of first pulleys 12 are provided on the upper side of the trolley main beam 5, and two sets of second pulleys 13 are provided on the front or rear side of the trolley main beam 5. The two sets of first pulleys 12 are respectively located on both sides of the wire rope fixing seat, and the two sets of second pulleys 13 are respectively located on both sides of the wire rope fixing seat. The pulleys on the two trolley main beams 5 are symmetrical to each other. The two sets of first pulleys 12 on the trolley main beam 5 are coaxially arranged and their central axis is parallel to the central axis of the lifting drum 8. The two symmetrical second pulleys 13 on the two trolley main beams 5 are coaxially arranged and their central axis is perpendicular to the central axis of the lifting drum 8, which facilitates rope winding.

[0022] In one embodiment, the lifting device 3 includes an annular frame 16, with a set of symmetrical hooks on the lower side of the annular frame 16, and two sets of symmetrical third pulleys 13 and two sets of symmetrical fourth pulleys 15 on the upper side of the annular frame 16; the central axis of the third pulley 13 is parallel to the central axis of the first pulley 12, and the central axis of the fourth pulley 15 is parallel to the central axis of the second pulley 13; the fourth pulley 15 is located directly below the wire rope fixing seat, which facilitates rope winding.

[0023] In one embodiment, the annular hanger 16 has a rectangular inner frame inside, and a mounting base 17 is connected inside the rectangular inner frame. A horizontal support is connected to the lower side of the mounting base 17, and the outer side of the rectangular inner frame is connected to the annular hanger 16 by a connecting rod. Specifically, the mounting base and the rectangular inner frame are detachably connected by bolts for easy disassembly. For example, when lifting a vessel with its own lifting lugs and a small opening, the mounting base can be removed, and the vessel can be lifted using a hook. When lifting a vessel with its own lifting lugs and a large opening and weight, the hook can be connected to the lifting lugs, the horizontal support can be inserted into the vessel and pressed against the inner wall of the vessel, and then the vessel can be lifted. When lifting a cylinder without lifting lugs, the horizontal support can be inserted into the cylinder and pressed against the inner wall of the cylinder, and then the vessel can be lifted.

[0024] In one embodiment, the horizontal support frame includes a plurality of first hinge rods 19 hinged to the lower side of the mounting base 17 and a telescopic mechanism disposed on the upper side of the mounting base 17. Each of the first hinge rods 19 is evenly arranged circumferentially around the telescopic mechanism. A transmission block is connected to the telescopic end of the telescopic mechanism. A second hinge rod 20 is hinged to the free end of each of the first hinge rods 19. The first hinge rods 19 are straight rods, and the second hinge rods 20 are laterally arranged L-shaped rods. The transmission block is hinged to the middle of the L-shaped rod, and a support block 18 is hinged to the other end of the L-shaped rod. During use, the opening and closing of the horizontal support frame is adjusted by extending and retracting the telescopic mechanism.

[0025] The above embodiments can be combined with each other.

[0026] This double-point, double-girder bridge crane features two sets of coaxial lifting drums, synchronously driven by a motor and reducer to ensure synchronized operation. Supports at both ends of the lifting drums further enhance their stability. Four sets of pulleys guide the crane's connection to the lifting device for easy lifting. The lifting device also includes hooks and horizontal supports for convenient lifting of cylindrical objects such as drums or containers.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A double-girder bridge crane with two lifting points, comprising a bridge frame and a lifting trolley mounted on the bridge frame, wherein the lifting trolley is equipped with two sets of lifting drums, and the lifting drums and lifting devices are connected by wire ropes, characterized in that: The crane trolley includes two parallel main beams, with end beams connecting the two main beams. The end beams and the main beams form a rectangular frame, and a trolley traveling mechanism is installed at each end of the end beams. Drum supports are installed on the upper sides of the two end beams, and lifting drums are installed on the two drum supports. The two main beams are connected in the middle by a support beam. A motor and a reducer are installed on the upper side of the support beam. The reducer is located between the lifting drums and connects the two lifting drums in a straight line. The output end of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the two lifting drums.

2. The double-beam bridge crane with dual lifting points according to claim 1, characterized in that: Each of the two trolley main beams is equipped with several guide pulleys and wire rope fixing seats. The wire rope fixing seats are located in the middle of the trolley main beams. Several lifting pulleys are correspondingly installed on the upper side of the lifting device. The wire rope of the lifting drum passes through the guide pulleys and lifting pulleys and connects to the wire rope fixing seats.

3. The double-beam bridge crane with dual lifting points according to claim 2, characterized in that: Two sets of first pulleys are installed on the upper side of the trolley main beam, and two sets of second pulleys are installed on the front or rear side of the trolley main beam. The two sets of first pulleys are located on both sides of the wire rope fixing seat, and the two sets of second pulleys are located on both sides of the wire rope fixing seat. The pulleys on the two trolley main beams are symmetrical to each other. The two sets of first pulleys on the trolley main beams are coaxially arranged and their central axis is parallel to the central axis of the hoisting drum. The two symmetrical second pulleys on the two trolley main beams are coaxially arranged and their central axis is perpendicular to the central axis of the hoisting drum.

4. The double-beam bridge crane with dual lifting points according to claim 3, characterized in that: The lifting device includes a ring-shaped hanger. A set of symmetrical hooks is provided on the lower side of the ring-shaped hanger. Two sets of symmetrical third pulleys and two sets of symmetrical fourth pulleys are provided on the upper side of the ring-shaped hanger. The central axis of the third pulley is parallel to the central axis of the first pulley, and the central axis of the fourth pulley is parallel to the central axis of the second pulley. The fourth pulley is located directly below the wire rope fixing seat.

5. The double-beam bridge crane with dual lifting points according to claim 4, characterized in that: The ring-shaped hanger has a rectangular inner frame inside, and a mounting base is connected inside the rectangular inner frame. A horizontal support is connected to the lower side of the mounting base, and the outer side of the rectangular inner frame is connected to the ring-shaped hanger by a connecting rod.

6. The double-beam bridge crane with dual lifting points according to claim 5, characterized in that: The horizontal support frame includes several first hinge rods hinged to the lower side of the mounting base and a telescopic mechanism set on the upper side of the mounting base. Each first hinge rod is evenly arranged around the telescopic mechanism. The telescopic end of the telescopic mechanism is connected to a transmission block. The free end of the first hinge rod is hinged to a second hinge rod. The first hinge rod is a straight rod, and the second hinge rod is an L-shaped rod arranged laterally. The transmission block is hinged to the middle of the L-shaped rod, and the other end of the L-shaped rod is hinged to a support block.

Images