A new double-girder portal crane

Abstract

The utility model discloses a novel double main beam portal crane, including the support frame of fixed installation on the ground, two main beam structure's support main beam is fixedly installed to support frame upper end, the movable trolley is installed to support main beam inboard, and the movable trolley upper rotation is installed with hoist winch, and hoist winch outside winding connection wire rope, and the connecting wire rope passes through movable trolley and is connected fixedly with hoist hook, the connecting block is arranged below support main beam, and the connecting block is used for the stable pull rope of keeping stable between hoist hook and is arranged, this novel double main beam portal crane, through winch to the winding of connecting wire rope, cooperate hoist hook and hoist the operation of goods, in this process, utilize the stable pull rope between connecting block and hoist hook and tighten hoist hook, thereby influence triangle stable structure, reach the shaking of hoist hook when hoisting goods, reduce the dangerousness of device work.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically a novel double-beam gantry crane. Background Technology

[0002] A double-girder gantry crane is a type of crane whose bridge (load-bearing body) consists of two parallel main beams (usually box-type or truss structures) supported on ground tracks by outriggers on both sides. It can move linearly along the tracks and is a very common and important type of heavy lifting equipment.

[0003] In the prior art, Chinese patent application number CN202210728093.4 discloses a gantry crane, including a frame and a movable lifting rope suspended within the frame; a hook is fixed to the bottom end of the lifting rope, and a connecting box is fixed to the top of the load; a pull rod is slidably disposed within the connecting box along its own length; a pull plate one that can abut against the hook is fixed to the side wall of the pull rod, and a pull plate two is fixed to the bottom end of the pull rod; a sliding groove one is opened on the top of the connecting box, and the connecting box is slidably connected to the pull rod through the sliding groove one; a spring two is fixed to the side wall of the pull rod, and the end of the spring two away from the pull rod is fixedly connected to the side of the sliding groove one away from the hook; a limit rod is slidably connected to the connecting box along its vertical direction; a limit piece is fixed to the bottom of the limit rod, and an insert rod is fixed to the top surface of the limit piece; the insert rod can be inserted into the bottom surface of the pull plate two.

[0004] Based on the above information, it can be seen that existing gantry cranes generally achieve lifting purposes through a winch and steel rope. However, in actual use, the steel rope may sway due to factors such as wind during the lifting process, causing the lifted goods to sway, which poses a certain danger. Utility Model Content

[0005] The purpose of this utility model is to provide a new type of double-girder gantry crane to solve the problem of cargo swaying mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A novel double-girder gantry crane includes a support frame fixedly installed on the ground. A support main beam with a two-girder structure is fixedly installed on the upper end of the support frame. A mobile trolley is installed inside the support main beam, and a lifting winch is rotatably installed above the mobile trolley. A connecting steel rope is wound around the outside of the lifting winch, and the connecting steel rope passes through the mobile trolley and is fixedly connected to the lifting hook. A connecting block is provided below the support main beam, and a stabilizing pull rope for pulling the lifting hook to maintain stability is provided between the connecting block and the lifting hook. A winding mechanism is provided inside the connecting block.

[0007] Preferably, the winding mechanism includes winding rollers rotatably mounted on the left and right sides of the connecting block, and a driven worm gear located outside the connecting block is coaxially fixedly mounted on the front side of the winding rollers.

[0008] Preferably, a driving worm gear is meshed above the driven worm gear to drive its rotation, and the driving worm gear is driven to rotate by a drive motor fixedly installed outside the connecting block.

[0009] Preferably, the connecting block and the guide slide rod are connected through and slidingly, and the guide slide rod is fixedly installed on the lower surface of the supporting main beam.

[0010] Preferably, a connecting plate is fixedly installed between the connecting block and the mobile trolley.

[0011] Preferably, buffer springs are installed on the outside of the left and right ends of the guide slide rod, and the positions of the buffer springs and the connecting blocks correspond to each other.

[0012] Preferably, a counterweight made of stone is fixedly installed at the lower end of the support frame, and warning lights are fixedly installed on the outer surfaces of the front and rear sides of the support frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This novel double-girder gantry crane adopts a novel structural design, the specific details of which are as follows: 1. The connecting steel rope is wound up by the hoisting winch, which is used in conjunction with the hoisting hook to lift the goods. During this process, the stabilizing rope between the connecting block and the hoisting hook is used to tighten the hoisting hook, thereby affecting the triangular stability structure, reducing the swaying of the hoisting hook when lifting goods, and reducing the danger when the device is working. Furthermore, when the device is working, the drive motor on the outer surface of the connecting block drives the active worm gear to rotate, which in turn drives the winding roller to rotate. The winding roller is used to wind and unwind the stabilizing rope, and in conjunction with the up and down movement of the lifting hook, the stabilizing rope is kept taut at all times. Furthermore, when the moving trolley moves the connecting block to the left and right ends, the elasticity of the buffer springs provides a buffering effect on the whole, thereby reducing the impact of the moving trolley on the support frame and affecting the stability of the device.

[0014] 2. A counterweight is fixedly installed at the lower end of the support frame to lower the overall center of gravity of the device, thereby improving stability. Warning lights are also fixedly installed on the outer surfaces of the front and rear sides of the support frame to alert nearby workers. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the support frame structure of this utility model; Figure 3 This is a schematic diagram of the overall lower surface structure of this utility model; Figure 4 This is a schematic diagram showing the connection relationship between the mobile trolley and the connecting block of this utility model; Figure 5 This is a schematic diagram of the lower surface structure of the mobile trolley of this utility model; Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0016] In the diagram: 1. Support frame; 2. Support beam; 3. Moving trolley; 4. Lifting winch; 5. Connecting steel rope; 6. Lifting hook; 7. Connecting block; 8. Stabilizing rope; 9. Connecting plate; 10. Rewinding roller; 11. Driven worm gear; 12. Driving worm gear; 13. Drive motor; 14. Guide slide bar; 15. Buffer spring; 16. Counterweight; 17. Warning light. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: Please refer to Figures 1-3 In order to improve the stability during the lifting process, this embodiment provides the following technical solution, which specifically discloses: a support frame 1 fixedly installed on the ground, a main support beam 2 with a two-beam structure fixedly installed on the upper end of the support frame 1, a mobile trolley 3 installed on the inner side of the main support beam 2, and a lifting winch 4 rotatably installed on the upper part of the mobile trolley 3. The lifting winch 4 is externally wound with a connecting steel rope 5, and the connecting steel rope 5 passes through the mobile trolley 3 and is fixedly connected to the lifting hook 6. A connecting block 7 is provided below the main support beam 2, and a stabilizing pull rope 8 for pulling the lifting hook 6 to maintain stability is provided between the connecting block 7 and the lifting hook 6. A winding mechanism is provided inside the connecting block 7. A counterweight block 16 made of stone is fixedly installed at the lower end of the support frame 1, and warning lights 17 are fixedly installed on the outer surfaces of the front and rear sides of the support frame 1.

[0019] When using the device, the trolley 3 is first moved inside the main support beam 2 to move the lifting hook 6 to the designated position and lower it to its lowest point. Then, the goods to be lifted are hung on the lifting hook 6. The lifting winch 4 above the trolley 3 is then turned on to wind up the connecting steel rope 5, thereby achieving the purpose of lifting the goods. During this process, the stabilizing rope 8 between the connecting block 7 and the lifting hook 6 is used to tighten the lifting hook 6, thereby improving the stability of the lifting hook 6 through the triangular stabilizing structure. In addition, the counterweight block 16 at the lower end of the support frame 1 is used to achieve the purpose of counterweighting and lowering the overall center of gravity of the device. At the same time, the warning lights 17 on the outer surfaces of the front and rear sides of the support frame 1 are lit when the device is working to remind the surrounding personnel.

[0020] Example 2: Please refer to Figures 4-6 In order to ensure the stable tension of the pull rope 8, this embodiment provides the following technical solution, which specifically discloses: the winding mechanism includes winding rollers 10 rotatably installed on the left and right sides of the connecting block 7, and a driven worm gear 11 located outside the connecting block 7 is coaxially fixedly installed on the front side of the winding rollers 10. An active worm gear 12 for driving its rotation is meshed above the driven worm gear 11, and the active worm gear 12 is driven to rotate by a drive motor 13 fixedly installed outside the connecting block 7. The connecting block 7 and the guide slide rod 14 are slidably connected through each other, and the guide slide rod 14 is fixedly installed on the lower surface of the supporting main beam 2. A connecting plate 9 is fixedly installed between the connecting block 7 and the moving trolley 3. Buffer springs 15 are installed on the outside of the left and right ends of the guide slide rod 14, and the positions of the buffer springs 15 and the connecting block 7 correspond to each other.

[0021] During the lifting process, the lifting hook 6 moves up and down. At this time, the drive motor 13 outside the connecting block 7 is turned on. The drive motor 13 drives the active worm gear 12 to rotate. At this time, the driven worm wheel 11, which is meshed with the active worm gear 12, drives the winding roller 10 to rotate. The winding roller 10 winds up and unwinds the stabilizing rope 8. In conjunction with the up and down movement of the lifting hook 6, the stabilizing rope 8 is kept taut. When the moving trolley 3 moves the connecting block 7 to the left and right ends of the supporting main beam 2 through the connecting plate 9 (at this time, the connecting block 7 slides outside the guide slide rod 14), the buffering effect of the buffer spring 15 is used to achieve the purpose of protection.

[0022] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel double-girder gantry crane, comprising a support frame (1) fixedly installed on the ground, wherein a support main beam (2) with a two-girder structure is fixedly installed on the upper end of the support frame (1), characterized in that, Also includes: A mobile trolley (3) is installed on the inner side of the supporting main beam (2), and a lifting winch (4) is rotatably installed on the top of the mobile trolley (3). A connecting steel rope (5) is wound around the outside of the lifting winch (4), and the connecting steel rope (5) passes through the mobile trolley (3) and is fixedly connected to the lifting hook (6). A connecting block (7) is provided below the supporting main beam (2), and a stabilizing rope (8) for pulling the lifting hook (6) to keep it stable is provided between the connecting block (7) and the lifting hook (6), and a winding mechanism is provided inside the connecting block (7).

2. The novel double-girder gantry crane according to claim 1, characterized in that: The winding mechanism includes winding rollers (10) rotatably mounted on the left and right sides of the connecting block (7), and a driven worm gear (11) located outside the connecting block (7) is coaxially fixedly mounted on the front side of the winding rollers (10).

3. A novel double-girder gantry crane according to claim 2, characterized in that: The driven worm gear (11) is meshed with an active worm gear (12) for driving its rotation, and the active worm gear (12) is driven to rotate by a drive motor (13) fixedly installed outside the connecting block (7).

4. A novel double-girder gantry crane according to claim 3, characterized in that: The connecting block (7) and the guide slide rod (14) are connected through a sliding connection, and the guide slide rod (14) is fixedly installed on the lower surface of the supporting main beam (2).

5. A novel double-girder gantry crane according to claim 4, characterized in that: A connecting plate (9) is fixedly installed between the connecting block (7) and the mobile trolley (3).

6. A novel double-girder gantry crane according to claim 5, characterized in that: The guide slide (14) has buffer springs (15) installed on the outside of its left and right ends, and the positions of the buffer springs (15) and the connecting block (7) correspond to each other.

7. A novel double-girder gantry crane according to claim 1, characterized in that: The lower end of the support frame (1) is fixedly installed with a counterweight (16) made of stone, and warning lights (17) are fixedly installed on the outer surfaces of the front and rear sides of the support frame (1).

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