Double-hook portal crane

Abstract

The utility model discloses a double-hook portal crane, which relates to the technical field of cranes, and comprises a portal frame hoisting assembly and a hoisting assembly, the bottom of the portal frame hoisting assembly is fixedly connected with the top of the hoisting assembly, the portal frame hoisting assembly comprises a portal frame and a connecting plate, and the bottom of the connecting plate is fixedly connected with the top of the hoisting assembly. When goods need to be hoisted in strong wind weather, the driving motor is started to enable the gear to rotate in the fixing frame, the toothed plate is driven to slide in the limiting groove in a rotating mode, the limiting block slides in the sliding groove in the sliding process, it is guaranteed that the toothed plate can move in a vertical movement track, and the goods are lifted conveniently. And the rigid toothed plate can avoid the situation that the goods float in the lifting process, the risk during goods lifting is reduced, meanwhile, the goods can be normally lifted when wind interference exists, and the goods lifting efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a double-hook gantry crane. Background Art

[0002] Crane refers to a multi-action lifting machine that can lift heavy objects vertically and carry them horizontally within a certain range. It is also called an overhead crane, an overhead crane or a crane. According to the structural form, cranes are mainly divided into light and small lifting equipment, bridge type, boom type and cable type. Among them, bridge cranes are mostly used for loading and unloading goods in workshops, warehouses, open-air storage yards, etc. Bridge cranes include bridge cranes and gantry cranes. Gantry cranes have the characteristics of high utilization rate, large operating range, wide adaptability and strong versatility. Therefore, they are widely used in outdoor cargo yards, ports and other places.

[0003] For example, a double-hook intelligent gantry crane disclosed in Chinese patent publication number CN115465790A can be used to lift goods according to the sizes of different goods by setting a lifting mechanism, thereby shortening the length of the lifting wire rope as much as possible. At the same time, the goods are lifted by double hooks and double wire ropes, which can effectively protect the stability of the goods and prevent the goods from shaking during transportation, thereby preventing the occurrence of danger.

[0004] However, the above patent has certain disadvantages. When encountering cargoes of different sizes, the gantry crane cannot adjust the distance between the double hooks; and when airflow interference occurs during the lifting process, the cargo lifted by the wire rope will shake in the air, and the stability of the cargo cannot be ensured. Utility Model Content

[0005] The utility model provides a double-hook gantry crane to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A double-hook gantry crane comprises a gantry lifting assembly and a lifting assembly, the bottom of the gantry lifting assembly is fixedly connected to the top of the lifting assembly, the gantry lifting assembly comprises a gantry and a connecting plate, the bottom of the connecting plate is fixedly connected to the top of the lifting assembly, the top of the gantry is fixedly connected to a fixing frame, a driving motor is fixedly installed on the outer side of the fixing frame, a gear is rotatably connected to the inner side of the fixing frame, a gear plate is meshed on the surface of the gear, the lifting assembly comprises a lifting plate, the top of the lifting plate is fixedly connected to the bottom of the connecting plate, a motor 1 is fixedly installed on the side of the lifting plate, a bidirectional screw is fixedly connected to the output end of the motor 1 and located inside the lifting plate, a guide rail is fixedly connected to the bottom surface of the lifting plate, the surface of the guide rail and the surface of the bidirectional screw are movably connected to the lifting frame, and a rotating drum is rotatably connected to the inner side of the lifting frame.

[0008] A further improvement of the technical solution of the utility model is that: the bottom of the tooth plate is fixedly connected to the top of the connecting plate, and a sliding groove is provided on the back of the tooth plate.

[0009] A further improvement of the technical solution of the utility model is that a limiting groove is provided on the top of the door frame, the inner wall of the limiting groove is fixedly connected to a limiting block, and the surface of the limiting block is slidably connected to the inner wall of the slide groove.

[0010] A further improvement of the technical solution of the utility model is that: the front side of the lifting frame is rotatably connected with a second sprocket, the end of the second sprocket is fixedly connected to the end of the drum, and a second motor is fixedly installed on the outer side of the lifting frame.

[0011] A further improvement of the technical solution of the utility model is that: the output end of the second motor is fixedly connected with a first sprocket, and a chain is meshed on the surface of the first sprocket and on the surface of the second sprocket.

[0012] A further improvement of the technical solution of the utility model is that: a cable is movably connected to the surface of the rotating drum, a connecting disk is fixedly connected to the bottom end of the cable, and a draw hook is rotatably connected to the bottom of the connecting disk.

[0013] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0014] 1. The utility model provides a double-hook gantry crane. When goods need to be lifted in windy weather, the driving motor is started to rotate the gear in the fixed frame, and the rotation drives the tooth plate to slide in the limit groove. During the sliding process, the limit block slides in the slide groove to ensure that the movement of the tooth plate can maintain a vertical motion trajectory, and the rigid tooth plate can prevent the goods from floating during the lifting process, reduce the risk of lifting the goods, and at the same time allow the goods to be lifted normally even when there is wind interference, thereby ensuring the lifting efficiency of the goods.

[0015] 2. The utility model provides a double-hook gantry crane. When lifting under normal circumstances, the motor two drives the first sprocket to rotate, and the cable on the drum can be released and lowered through the chain and the second sprocket, so that the hook can be connected to the cargo. When the distance between the cargo connecting hooks is small, the two-way screw is driven to rotate by starting the motor one. At this time, the two sets of lifting frames move synchronously and uniformly on the surface of the guide rail toward the center of the two-way screw, so that the distance between the two sets of hooks is reduced, so that the cargo can be connected when the distance between the cargo connecting hooks is small. After the connection, the motor two reverses to drive the cable on the drum to reel in, so as to lift the cargo. The motor one and the motor two used have internal brake devices to limit when they are not started to prevent the cargo from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural front view of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the gantry lifting assembly of the utility model;

[0019] Figure 4 It is a structural cross-sectional view of the utility model at A;

[0020] Figure 5 It is a structural schematic diagram of the lifting assembly of the utility model.

[0021] In the figure: 1. gantry lifting assembly; 11. gantry; 12. fixed frame; 13. driving motor; 14. gear; 15. toothed plate; 16. slideway; 17. connecting plate; 18. limit block; 19. limit slot; 2. lifting assembly; 21. lifting plate; 22. motor 1; 23. guide rail; 24. bidirectional screw; 25. lifting frame; 26. motor 2; 27. first sprocket; 28. second sprocket; 29. ​​rotating drum; 210. cable; 211. connecting plate; 212. hook; 213. chain. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the embodiments:

[0023] Example 1

[0024] like Figure 1-5 As shown, the utility model provides a double-hook gantry crane, including a gantry lifting assembly 1 and a lifting assembly 2, the bottom of the gantry lifting assembly 1 is fixedly connected to the top of the lifting assembly 2, the gantry lifting assembly 1 includes a gantry 11 and a connecting plate 17, the bottom of the connecting plate 17 is fixedly connected to the top of the lifting assembly 2, the top of the gantry 11 is fixedly connected to a fixing frame 12, the outer side of the fixing frame 12 is fixedly installed with a driving motor 13, the inner side of the fixing frame 12 is rotatably connected to a gear 14, and the gear 14 The surface of the lifting plate 21 is meshed with a toothed plate 15, and the lifting assembly 2 includes a lifting plate 21. The top of the lifting plate 21 is fixedly connected to the bottom of the connecting plate 17, and a motor 22 is fixedly installed on the side of the lifting plate 21. A bidirectional screw 24 is fixedly connected to the output end of the motor 22 and located inside the lifting plate 21, and a guide rail 23 is fixedly connected to the bottom surface of the lifting plate 21. A lifting frame 25 is movably connected to the surface of the guide rail 23 and located on the surface of the bidirectional screw 24, and a rotating drum 29 is rotatably connected to the inner side of the lifting frame 25.

[0025] In this embodiment, the cargo is lifted by the lifting component 2 in normal weather, and the distance between the double hooks can be adjusted during lifting to ensure that cargo of different sizes can be lifted. In windy weather, in order to prevent the cargo from drifting after being lifted by the lifting component 2, the gantry lifting component 1 is used to lift the cargo, and the rigid material is used to lift it vertically, so that the gantry crane can still lift normally even when there is airflow interference.

[0026] Example 2

[0027] like Figure 1-5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the bottom of the tooth plate 15 is fixedly connected to the top of the connecting plate 17, a slide groove 16 is provided on the back of the tooth plate 15, a limiting groove 19 is provided on the top of the door frame 11, the inner wall of the limiting groove 19 is fixedly connected to the limiting block 18, and the surface of the limiting block 18 is slidably connected to the inner wall of the slide groove 16.

[0028] In this embodiment, when the cargo needs to be lifted in windy weather, the drive motor 13 is started to rotate the gear 14 in the fixed frame 12, and the rotation drives the tooth plate 15 to slide in the limit groove 19. During the sliding process, the limit block 18 slides in the slide groove 16 to ensure that the movement of the tooth plate 15 can maintain a vertical motion trajectory, and the rigid tooth plate 15 can prevent the cargo from floating during the lifting process, reduce the risk of cargo lifting, and at the same time allow the cargo to be lifted normally even when there is wind interference, thereby ensuring the lifting efficiency of the cargo.

[0029] Example 3

[0030] like Figure 1-5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the front side of the lifting frame 25 is rotatably connected to the second sprocket 28, the end of the second sprocket 28 is fixedly connected to the end of the drum 29, the outer side of the lifting frame 25 is fixedly installed with a second motor 26, the output end of the second motor 26 is fixedly connected to the first sprocket 27, the surface of the first sprocket 27 and the surface of the second sprocket 28 are meshed with a chain 213, the surface of the drum 29 is movably connected to a cable 210, the bottom end of the cable 210 is fixedly connected to a connecting plate 211, and the bottom of the connecting plate 211 is rotatably connected to a hook 212.

[0031] In this embodiment, during normal lifting, the motor 26 drives the first sprocket 27 to rotate, and the cable 210 on the drum 29 can be released and lowered through the chain 213 and the second sprocket 28, so that the hook 212 can be connected to the cargo. When the distance between the cargo connecting hooks is small, the two-way screw 24 is driven to rotate by starting the motor 1 22. At this time, the two groups of lifting frames 25 move synchronously and uniformly on the surface of the guide rail 23 toward the center of the two-way screw 24, so that the distance between the two groups of hooks 212 is reduced, so that the cargo can be connected when the distance between the cargo connecting hooks is small. After the connection, the motor 26 reverses to drive the cable 210 on the drum 29 to be reeled up, so as to lift the cargo. The motor 1 22 and the motor 2 26 used have internal brake devices to limit when they are not started to prevent the cargo from slipping.

[0032] The following is a detailed description of the working principle of the double-hook gantry crane.

[0033] like Figure 1-5As shown, during normal lifting, the motor 26 drives the first sprocket 27 to rotate, and the cable 210 on the drum 29 can be released and lowered through the chain 213 and the second sprocket 28, so that the hook 212 can be connected to the cargo. When the distance between the cargo connecting hooks is small, the two-way screw 24 is driven to rotate by starting the motor 1 22. At this time, the two groups of lifting frames 25 move synchronously and uniformly on the surface of the guide rail 23 toward the center of the two-way screw 24, so that the distance between the two groups of hooks 212 is reduced, so that the cargo can be connected when the distance between the cargo connecting hooks is small. After the connection, the motor 26 is reversed to drive the cable 210 on the drum 29 to be reeled up, so as to lift the cargo. 2 and the motor 26 have an internal brake device limit when not started to prevent the cargo from slipping. When strong winds occur and the cargo needs to be lifted, the cable 210 is first completely reeled in, leaving only the connecting plate 211 and the hook 212 exposed, and then the drive motor 13 is started to rotate the gear 14 in the fixed frame 12, and the rotation drives the tooth plate 15 to slide in the limit groove 19. During the sliding process, the limit block 18 slides in the slide groove 16 to ensure that the movement of the tooth plate 15 can maintain a vertical motion trajectory, and the rigid tooth plate 15 can prevent the cargo from floating during the lifting process, reduce the risk of cargo lifting, and at the same time allow the cargo to be lifted normally even when there is wind interference, thereby ensuring the lifting efficiency of the cargo.

[0034] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A double-hook gantry crane, comprising a gantry lifting assembly (1) and a lifting assembly (2), characterized in that: The bottom of the gantry lifting assembly (1) is fixedly connected to the top of the lifting assembly (2); The gantry lifting assembly (1) comprises a gantry (11) and a connecting plate (17), the bottom of the connecting plate (17) is fixedly connected to the top of the lifting assembly (2), the top of the gantry (11) is fixedly connected to a fixing frame (12), a driving motor (13) is fixedly installed on the outer side of the fixing frame (12), a gear (14) is rotatably connected to the inner side of the fixing frame (12), and a toothed plate (15) is meshed on the surface of the gear (14); The lifting assembly (2) comprises a lifting plate (21), the top of the lifting plate (21) is fixedly connected to the bottom of the connecting plate (17), a motor 1 (22) is fixedly mounted on the side of the lifting plate (21), a bidirectional screw (24) is fixedly connected to the output end of the motor 1 (22) and located inside the lifting plate (21), a guide rail (23) is fixedly connected to the bottom surface of the lifting plate (21), a lifting frame (25) is movably connected to the surface of the guide rail (23) and located on the surface of the bidirectional screw (24), and a rotating drum (29) is rotatably connected to the inner side of the lifting frame (25).

2. A double hook gantry crane according to claim 1, characterized in that: The bottom of the tooth plate (15) is fixedly connected to the top of the connecting plate (17), and a sliding groove (16) is provided on the back of the tooth plate (15).

3. A double-hook gantry crane according to claim 1, characterized in that: A limiting groove (19) is provided on the top of the door frame (11); the inner wall of the limiting groove (19) is fixedly connected to a limiting block (18); and the surface of the limiting block (18) is slidably connected to the inner wall of the sliding groove (16).

4. A double-hook gantry crane according to claim 1, characterized in that: The front side of the lifting frame (25) is rotatably connected to a second sprocket (28), the end of the second sprocket (28) is fixedly connected to the end of a rotating drum (29), and a second motor (26) is fixedly installed on the outer side of the lifting frame (25).

5. A double-hook gantry crane according to claim 4, characterized in that: The output end of the second motor (26) is fixedly connected to a first sprocket (27), and a chain (213) is meshed on the surface of the first sprocket (27) and on the surface of the second sprocket (28).

6. A double-hook gantry crane according to claim 1, characterized in that: The surface of the rotating drum (29) is movably connected with a cable (210), the bottom end of the cable (210) is fixedly connected with a connecting disk (211), and the bottom of the connecting disk (211) is rotatably connected with a draw hook (212).

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