Improved double-beam crane

Abstract

The utility model discloses an improved double-beam crane, and relates to the technical field of cranes. The improved double-beam crane comprises double main beams, cross beams, a maintenance channel, a lifting platform and moving wheels, the bottom ends of the double main beams are vertically locked and installed on the cross beams, the maintenance channel is installed at the side ends of the double main beams, moving guide rails are arranged on the double main beams, and the lifting platform drives the moving wheels to move along the moving guide rails through a moving motor. Moving wheels are rotationally installed at the side end of the base table, the moving motor is in transmission connection with the moving wheels, the driving motor is in transmission connection with the reduction gearbox through the linkage shaft, the output end of the reduction gearbox is in transmission connection with the rope winding barrel, the braking wheel and the linkage shaft are coaxially arranged, and the reduction gearbox reduces the rotating speed of the braking wheel through a braking device. The improved double-beam crane disclosed by the utility model is large in lifting weight, the reduction gearbox is efficiently matched with the rope winding drum to stably rotate, and the braking device is matched with the rope winding drum to efficiently stop the rope winding drum, so that the safety of the crane during use is effectively improved, and the overall use effect of the crane is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, and more particularly to an improved double-beam crane. Background Art

[0002] Double-girder cranes are typically used horizontally above workshops, warehouses, and material yards to lift materials. Their ends rest on tall concrete columns or metal supports. However, existing double-girder cranes often feature a single rope drum, resulting in limited lifting capacity. When lifting large loads, ensuring crane safety becomes crucial. This led the inventors to research and propose this solution. Utility Model Content

[0003] The purpose of the utility model is to provide an improved double-girder crane in order to solve the above technical problems.

[0004] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0005] An improved double-girder crane includes a double main girder, a cross girder, an inspection channel, a lifting platform, and a moving wheel. The bottom ends of the double main girder are vertically locked and mounted on the cross girder. The side ends of the double main girder are equipped with an inspection channel. The double main girder is provided with a moving guide rail. The lifting platform is driven by a moving motor to move the moving wheel along the moving guide rail. The lifting platform includes a base, a rope drum, a reduction gear, a drive motor, a braking wheel, and a braking device. The side end of the base is rotatably mounted with a moving wheel. The moving motor is connected to the moving wheel through a transmission connection. The drive motor is connected to the reduction gear through a linkage shaft. The output end of the reduction gear is connected to the rope drum through a transmission connection. The braking wheel is coaxially arranged with the linkage shaft. The reduction gear reduces the speed of the braking wheel through the braking device. When the moving wheel is mounted at the output end of the moving motor, the moving wheel is directly mounted at the output end of the moving motor. When the moving wheel is staggered with the moving motor that drives it to rotate, it needs to be driven by a wheel body, such as: a pulley is installed on the moving motor, and the pulley and belt cooperate to drive the moving wheel to rotate.

[0006] The improved double-girder crane in this utility model has a large lifting capacity and can fully utilize the space under the bridge to lift materials without being hindered by ground equipment. The reduction gearbox and the braking device cooperate to effectively stop the crane, effectively improving the safety of the crane during use.

[0007] A better technical solution: The braking device includes a cylinder, a rotating frame, a linkage, a first claw, a second claw, and a friction plate. The friction plate is set on the inner side of the first claw and the second claw that contact the braking wheel. The movable end of the cylinder is hinged to the linkage, the middle part of the linkage is hinged to the rotating frame, and the side end of the linkage away from the cylinder is hinged to the first claw and the second claw.

[0008] A better technical solution: The lifting platform is also provided with a rotating wheel group and a hook, a matching wheel group is provided at the top of the hook, a wire rope is wound around the rope drum, and the wire rope is wound around the rotating wheel group and the matching wheel group in sequence.

[0009] A better technical solution: two reduction gearboxes and two rope drums are provided.

[0010] A better technical solution: a distribution box is set on the double main beams.

[0011] A preferred technical solution: four moving wheels are provided on the base, and at least two of the moving wheels are provided with independent moving motors.

[0012] The beneficial effects of the utility model are as follows:

[0013] The improved double-beam crane in the utility model has a large lifting weight, and the rope drum rotates stably through the efficient cooperation of the reduction box, and is efficiently stopped through the cooperation of the braking device, which effectively improves the safety of the crane during use and ensures the overall use effect of the crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a structural diagram of the braking device;

[0016] Figure 3 It is the structural diagram of the lifting platform;

[0017] Figure 4 This is a schematic diagram of the structure of the utility model from an upward viewing angle.

[0018] Figure numerals: 1. Double main beams; 11. Moving guide rails; 2. Cross beams; 3. Maintenance passage; 4. Lifting platform; 41. Base; 42. Rope drum; 43. Reducer; 44. Drive motor; 45. Braking wheel; 46. Braking device; 461. Cylinder; 462. Transfer frame; 463. Linkage; 464. First clamping claw; 465. Second clamping claw; 466. Friction plate; 47. Linkage shaft; 48. Transition shaft; 49. Bottom plate; 5. Moving wheel; 6. Moving motor; 7. Transfer wheel group; 8. Hook; 81. Mating wheel group; 9. Distribution box. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0021] like Figures 1 to 4 As shown, this embodiment provides an improved double-girder crane, including double main beams 1, cross beams 2, maintenance passages 3, lifting platforms 4, and moving wheels 5. The bottom ends of the double main beams 1 are vertically locked and installed on the cross beams 2, and the side ends of the double main beams 1 are installed with maintenance passages 3. The double main beams 1 are provided with moving guide rails 11. The lifting platform 4 drives the moving wheels 5 to move along the moving guide rails 11 through the moving motor 6. The lifting platform 4 includes a base 41, a rope drum 42, a reduction gear 43, a drive motor 44, a braking wheel 45, and a braking device 46. The side end of the base 41 is rotatably installed with a moving wheel 5, the moving motor 6 is transmission-connected to the moving wheel 5, the drive motor 44 is transmission-connected to the reduction gear 43 through a linkage shaft 47, the output end of the reduction gear 43 is transmission-connected to the rope drum 42, the braking wheel 45 is coaxially arranged with the linkage shaft 47, and the reduction gear 43 reduces the rotation speed of the braking wheel 45 through the braking device 46.

[0022] Furthermore, the braking device 46 includes a cylinder 461, a transfer frame 462, a linkage 463, a first claw 464, a second claw 465, and a friction plate 466. The friction plate 466 is provided on the inner side of the first claw 464 and the second claw 465 in contact with the braking wheel 45. The movable end of the cylinder 461 is hinged to the linkage 463, the middle part of the linkage 463 is hinged to the transfer frame 462, and the side end of the linkage 463 away from the cylinder 461 is hinged to the first claw 464 and the second claw 465.

[0023] Furthermore, the lifting platform 4 is also provided with a rotating wheel group 7 and a hook 8, and a matching wheel group 81 is provided at the top of the hook 8. A wire rope is wound around the rope drum 42, and the wire rope is wound around the rotating wheel group 7 and the matching wheel group in sequence.

[0024] Furthermore, two reduction gear boxes 43 and two rope drums are provided to increase the lifting weight.

[0025] Furthermore, a distribution box 9 is provided on the double main beam 1, and the electrical safety switch used by the crane is integrated into the distribution box 9 to facilitate centralized maintenance in the later stage.

[0026] Furthermore, four moving wheels 5 are provided on the base 41 , and each moving wheel 5 is provided with an independent moving motor 6 to ensure driving power when lifting heavy objects.

[0027] During use, the lifting platform 4 activates the moving motor 6, which controls the precise displacement of the moving wheel 5 along the moving guide rail 11. The height of the hook 8 is adjusted by winding the wire rope from the rope drum 42. During the braking operation, the cylinder 461 is controlled. When the movable end at the top of the cylinder 461 pulls the linkage 463 downward, the linkage 463 rotates with the intermediate frame 462 as the base point, and the first and second claws 464, 465 are hinged inward to contact the braking wheel 45. Specifically, the first claw 464 is hinged to the linkage 463 via the transition shaft 48, and the second claw 465 is directly hinged to the linkage 463. Furthermore, a bottom plate 49 is laterally mounted at the bottom ends of the first and second claws 464, 465. The bottom plate 49 can also be provided with a friction plate 466 for contacting the friction braking wheel 45. The ends of the bottom plate 49 are hinged to the first and second claws 464, 465, respectively.

Claims

1. An improved double-girder crane, characterized in that: It includes double main beams, cross beams, inspection passages, lifting platforms, and moving wheels. The bottom ends of the double main beams are vertically locked and installed on the cross beams. The side ends of the double main beams are installed with inspection passages. Moving guide rails are provided on the double main beams. The lifting platform drives the moving wheels to move along the moving guide rails through a moving motor. The lifting platform includes a base, a rope drum, a reduction gear, a drive motor, a braking wheel, and a braking device. The side end of the base is rotatably installed with a moving wheel. The moving motor is transmission-connected to the moving wheel. The drive motor is transmission-connected to the reduction gear through a linkage shaft. The output end of the reduction gear is transmission-connected to the rope drum. The braking wheel is coaxially arranged with the linkage shaft, and the reduction gear reduces the rotation speed of the braking wheel through the braking device.

2. The improved double-girder crane according to claim 1, characterized in that: The braking device includes a cylinder, a rotating frame, a linkage, a first claw, a second claw, and a friction plate. The friction plate is provided on the inner side of the first claw and the second claw that contact the braking wheel. The movable end of the cylinder is hinged to the linkage, the middle part of the linkage is hinged to the rotating frame, and the side end of the linkage away from the cylinder is hinged to the first claw and the second claw.

3. The improved double-girder crane according to claim 1, characterized in that: The lifting platform is also provided with a rotating wheel group and a hook, a matching wheel group is provided at the top end of the hook, a steel wire rope is wound around the rope drum, and the steel wire rope is wound around the rotating wheel group and the matching wheel group in sequence.

4. The improved double-girder crane according to claim 1, characterized in that: The reduction box and the rope drum are provided in two pieces.

5. The improved double-girder crane according to claim 1, characterized in that: A distribution box is arranged on the double main beams.

6. The improved double-girder crane according to claim 1, characterized in that: Four moving wheels are arranged on the base, and at least two of the moving wheels are provided with independent moving motors.

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