Direction-changing moving device for portal crane

Abstract

The utility model relates to the technical field of crane equipment, and particularly discloses a direction-changing moving device for a portal crane, which comprises a base and an equipment box, a reinforcing plate is arranged on the outer surface of the base, a group of mounting lug plates are arranged on the outer surface of the base, a lifting component is arranged on the outer surface of each mounting lug plate, and the lifting component is arranged on the outer surface of the equipment box. The output end of each lifting assembly is provided with a moving assembly, the outer surface of the base is provided with a hydraulic auxiliary assembly, through the synergistic effect of the lifting assemblies and the moving assemblies, the composite motion of the crane in the X / Y / Z three-axis direction is achieved, the stroke precision of a piston rod of a hydraulic cylinder reaches + / -1 mm, the 360-degree rotating capacity of a universal wheel steering seat is matched, and the lifting assembly can rotate in the X / Y / Z three-axis direction. The limitation that a traditional crane can only move in the direction of a single track is overcome, meanwhile, the base adopts the gridding design that Q345B steel is matched with the reinforcing plates, the overall bending strength is improved by 40%, a stable force transmission path is formed through symmetrical arrangement of the mounting lug plates, and the overturning moment of 200 tons can be borne to the maximum degree.

Description

Technical Field

[0001] This utility model relates to the field of crane equipment technology, and specifically discloses a reversing movement device for gantry cranes. Background Technology

[0002] A gantry crane is a type of bridge crane that runs on ground rails supported by two outriggers on both sides. It is mainly used for loading and unloading operations in outdoor freight yards, material yards, and bulk cargo yards. Its characteristics include a metal structure with a portal frame and two outriggers installed under the main beam, allowing it to move directly on ground rails. It has advantages such as high site utilization, large operating range, and wide adaptability.

[0003] At present, gantry cranes are widely used in freight yards, storage yards, workshops and other places for loading, unloading and handling materials. Traditional gantry cranes usually rely on their trolley traveling wheels to run in a straight line along a fixed track. When it is necessary to change the overall direction of movement of the crane in the working area, due to the huge mass of large gantry cranes, it is extremely laborious and inefficient to rely on manpower or simple tools to turn it. Therefore, a direction-changing movement device for gantry cranes is needed to solve this problem. Utility Model Content

[0004] This invention proposes a reversing movement device for gantry cranes. Through an innovative combination of a hydraulically driven three-axis collaborative control system and a modular universal wheel assembly, the crane can achieve millimeter-level precise displacement and 360-degree omnidirectional steering in the X / Y / Z axes, solving the problem that traditional gantry cranes are limited by fixed tracks and cannot perform flexible multi-degree-of-freedom movement.

[0005] This utility model is implemented as follows: a reversing and moving device for a gantry crane includes a base and an equipment box. The outer surface of the base is provided with a reinforcing plate and a set of mounting lugs. Each mounting lug is provided with a lifting component on its outer surface. The output end of each lifting component is provided with a moving component. The outer surface of the base is provided with a hydraulic auxiliary component.

[0006] As a preferred embodiment of the reversing movement device for a gantry crane according to the present invention, each of the lifting components includes a hydraulic cylinder body, each hydraulic cylinder body has a hydraulic cylinder piston rod on its outer surface, each hydraulic cylinder piston rod has a dust cover on its outer surface, and each lifting component has a hydraulic lock on its outer surface.

[0007] As a preferred embodiment of the reversing moving device for a gantry crane according to the present invention, each moving component includes a support frame body, each support frame body has a hinge seat on its outer surface, each hinge seat has its outer surface in contact with the output end of the lifting component, each support frame body has a locking hole on its side plate, and each locking hole has a positioning bolt inside.

[0008] As a preferred embodiment of the reversing movement device for a gantry crane according to the present invention, each of the main support frame bodies is welded with a wheel axle mounting plate on its bottom surface, each of the main support frame bodies is provided with a universal wheel steering seat on its outer surface, each of the universal wheel steering seats is provided with a universal wheel body inside, and each of the universal wheel steering seats is provided with a foot-operated brake pedal on its outer surface.

[0009] As a preferred embodiment of the reversing movement device for a gantry crane according to the present invention, the hydraulic auxiliary component includes a hydraulic pipeline, the outer surface of which is fixedly connected to a quick-connect coupling, and a manual pump interface is provided on the side of the base.

[0010] As a preferred embodiment of the present invention for a reversing movement device for a gantry crane, the outer surface of the equipment box is provided with an operating panel, the outer surface of the equipment box is suspended from the outer surface of the gantry crane's outriggers, the inside of the equipment box is provided with a PLC control module, and the inside of the equipment box is provided with a wireless receiving module.

[0011] The beneficial effects of this utility model are:

[0012] 1. This reversing and moving device for gantry cranes achieves composite movement of the crane in the X / Y / Z three-axis directions through the coordinated action of the lifting and moving components. The stroke accuracy of the hydraulic cylinder piston rod reaches ±1mm. Combined with the 360° rotation capability of the universal wheel steering seat, it solves the limitation of traditional cranes that can only move in a single track direction. At the same time, the base adopts Q345B steel with a grid design of reinforcing plates, which increases the overall bending strength by 40%. The symmetrical arrangement of the mounting ear plates forms a stable force transmission path, which can withstand a maximum overturning moment of 200 tons.

[0013] 2. This reversing and moving device for gantry cranes reduces the replacement time of vulnerable parts from 8 hours to 2 hours through the standardized design of the support frame body. At the same time, the swivel wheel body adopts a modular wheel set, reducing the maintenance cost of a single wheel by 60%. The lever amplification structure of the foot-operated brake pedal reduces the braking force to 50N for locking. Combined with the adjustable height design of the wheel axle mounting plate, it can adapt to slope operation of ±15°. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a front view of the reversing movement device for a gantry crane according to the present invention.

[0016] Figure 2 This is a side view of a reversing movement device for a gantry crane according to the present invention.

[0017] Figure 3 This is an overall structural diagram of the equipment box for a reversing movement device for a gantry crane according to the present invention;

[0018] Figure 4 This is a structural diagram of the internal structure of the equipment box of a reversing movement device for a gantry crane according to the present invention.

[0019] The diagram shows the following components: 1. Base; 2. Mounting lug; 3. Lifting assembly; 301. Hydraulic lock; 302. Hydraulic cylinder body; 303. Hydraulic cylinder piston rod; 4. Moving assembly; 401. Support frame body; 402. Locking hole; 403. Positioning bolt; 404. Wheel axle mounting plate; 405. Caster wheel steering seat; 406. Caster wheel body; 407. Foot brake pedal; 408. Hinge seat; 5. Reinforcing plate; 6. Hydraulic auxiliary assembly; 601. Hydraulic pipeline; 602. Quick-connect coupling; 603. Manual pump interface; 7. Equipment box; 701. Control panel; 702. PLC control module; 703. Wireless receiver module. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0021] The hydraulic cylinder body 302 and hydraulic cylinder piston rod 302 in this utility model are common hydraulic devices in the prior art, and this application will not elaborate on their models or internal structures.

[0022] Please see Figure 1-4A reversing movement device for a gantry crane includes a base 1 and an equipment box 7. The outer surface of the base 1 is provided with a reinforcing plate 5 and a set of mounting ear plates 2. Each mounting ear plate 2 has a lifting assembly 3 on its outer surface. Each lifting assembly 3 includes a hydraulic cylinder body 302. Each hydraulic cylinder body 302 has a hydraulic cylinder piston rod 303 on its outer surface. Each hydraulic cylinder piston rod 303 has a dust cover on its outer surface. Each lifting assembly 3 has a hydraulic lock 301 on its outer surface.

[0023] In this embodiment: the main structure of the base 1 adopts a box beam welded structure with internal reinforcing ribs and a mesh-like reinforcing plate 5 welded on the outer surface to improve torsional stiffness. The bottom is reserved with standard bolt holes to be compatible with various crane models. The mounting ear plate 2 forms a stable support surface. The ear plate has an elongated hole to allow for ±5mm installation error adjustment. The root of the ear plate adopts a rounded transition design to avoid stress concentration.

[0024] As a technical optimization of this utility model, each lifting component 3 has a moving component 4 at its output end. Each moving component 4 includes a support frame body 401. Each support frame body 401 has a hinge seat 408 on its outer surface. The outer surface of each hinge seat 408 is in contact with the output end of the lifting component 3. Each support frame body 401 has a locking hole 402 on its side plate. Each locking hole 402 has a positioning bolt 403 inside it. Each support frame body 401 has a wheel axle mounting plate 404 welded to its bottom surface. Each wheel axle mounting plate 404 has a universal wheel steering seat 405 on its outer surface. Each universal wheel steering seat 405 has a universal wheel body 406 inside it. Each universal wheel steering seat 405 has a foot-operated brake pedal 407 on its outer surface.

[0025] In this embodiment: the hydraulic cylinder body 302 is made of cold-drawn seamless steel pipe; the hydraulic cylinder piston rod 303 is hard chrome plated with a thickness ≥0.05mm; the dust cover is a multi-layer pleated structure with a temperature resistance range of -30℃ to 80℃; the hydraulic lock 301 adopts an integrated cartridge valve structure with a response time ≤0.1s, a mechanical self-locking function, a pressure holding time ≥24h, and a pressure display window for visual management; the support frame body 401 is manufactured using steel plate bending forming process, with a side plate thickness of 20mm and array-type locking holes 402; its bottom surface is welded with reinforcing ribs, reducing local stress by 30%; the hinge seat 408 uses a self-lubricating copper sleeve; the positioning bolt 403 is a stepped shaft structure with a fit clearance ≤0.02mm; the universal wheel set has a load-bearing capacity ≥10t / set; the wheel axle mounting plate 404 is laser-cut from Q345B low alloy steel plate and is integrated with the support frame. The main support frame 401 is connected by double-sided continuous fillet welds, with a thickness of 30mm. The surface is sandblasted and rust-removed, and has elongated holes to allow for ±3mm adjustment of the installation position. The bottom is welded with cross-shaped reinforcing ribs, increasing the bending stiffness by 40%. The universal wheel steering seat 405 is made of cast steel ZG270-500 and uses a combination of flat bearings and thrust bearings for stepless adjustment. It has a built-in self-lubricating copper sleeve and a maintenance-free cycle of up to 5000 hours. Its top flange has 8 M16 mounting holes. The universal wheel body 406 has a polyurethane-coated steel core structure with a static load capacity of 15 tons / wheel. It has a built-in double-row tapered roller bearing. The foot-operated brake pedal 407 has a lever ratio of 1:6 and an operating force of ≤50N. Its brake pads are made of sintered copper-based composite material and use a four-bar self-locking mechanism. The pedal surface has anti-slip textures, the braking response time is ≤0.5 seconds, and it has a mechanical position indicator.

[0026] As a technical optimization of this utility model, the outer surface of the base 1 is provided with hydraulic auxiliary components 6, the hydraulic auxiliary components 6 include hydraulic pipelines 601, the outer surface of the hydraulic pipelines 601 is fixedly connected to quick-connect couplings 602, the side of the base 1 is provided with a manual pump interface 603, the outer surface of the equipment box 7 is provided with an operation panel 701, the outer surface of the equipment box 7 is suspended from the outer surface of the gantry crane outriggers, the inside of the equipment box 7 is provided with a PLC control module 702, and the inside of the equipment box 7 is provided with a wireless receiving module 703.

[0027] In this embodiment: the hydraulic pipeline 601 is a multi-layer steel wire braided hose with a burst pressure ≥50MPa. The pipeline layout adopts a ring circuit design. The quick-connect coupling 602 conforms to ISO16028 standards. The manual pump interface 603 is compatible with common hydraulic tools and is equipped with a one-way valve group to prevent oil backflow. Its operating force is ≤200N, meeting emergency needs. The equipment box 7 has an IP54 protection rating, providing dust and water resistance. The box door is supported by a gas spring, with an opening angle ≥90°. It has internal equipment rails and adopts a modular installation design. The PLC control module 702 supports the Modbus protocol. The wireless receiver module 703 operates at a frequency of 2.4GHz±50MHz. The operation panel 701 includes an emergency stop button and status indicator lights.

[0028] The working principle and usage process of this utility model are as follows: In use, the operator first starts the PLC control module 702 through the operation panel 701 of the equipment box 7. The wireless receiving module 703 can receive remote commands. The manual pump interface 603 of the hydraulic auxiliary component 6 is connected to an external hydraulic source. The quick-connect coupling 602 ensures quick connection of the pipeline. At the same time, the hydraulic cylinder piston rod 303 of the lifting component 3 extends under the control of the hydraulic lock 301. It drives the moving component 4 to descend through the hinge seat 408. When the omnidirectional wheel body 406 contacts the ground, the foot brake pedal 407 is unlocked. At this time, the crane outriggers are off the ground. By pushing the mounting ear plate 2 on the base 1, the omnidirectional wheel steering seat 405 achieves flexible change of direction. After positioning is completed, the foot brake pedal 407 locks the wheel body, and the lifting component 3 is retracted. The whole process realizes the flexible movement of the gantry crane in the non-track direction.

[0029] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0030] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A reversing movement device for a gantry crane, characterized in that: It includes a base (1) and an equipment box (7). The outer surface of the base (1) is provided with a reinforcing plate (5). The outer surface of the base (1) is provided with a set of mounting ear plates (2). The outer surface of each mounting ear plate (2) is provided with a lifting component (3). The output end of each lifting component (3) is provided with a moving component (4). The outer surface of the base (1) is provided with a hydraulic auxiliary component (6).

2. The reversing movement device for a gantry crane according to claim 1, characterized in that: Each of the lifting components (3) includes a hydraulic cylinder body (302), and the outer surface of each hydraulic cylinder body (302) is provided with a hydraulic cylinder piston rod (303). The outer surface of each hydraulic cylinder piston rod (303) is provided with a dust cover, and the outer surface of each lifting component (3) is provided with a hydraulic lock (301).

3. The reversing movement device for a gantry crane according to claim 1, characterized in that: Each of the moving components (4) includes a support frame body (401), and each of the support frame bodies (401) has a hinge seat (408) on its outer surface. The outer surface of each hinge seat (408) is in contact with the output end of the lifting component (3). Each of the support frame bodies (401) has a locking hole (402) on its side plate, and each of the locking holes (402) has a positioning bolt (403) inside.

4. A reversing movement device for a gantry crane according to claim 3, characterized in that: Each of the support frame bodies (401) has a wheel axle mounting plate (404) welded to its bottom surface. Each of the wheel axle mounting plates (404) has a universal wheel steering seat (405) on its outer surface. Each of the universal wheel steering seats (405) has a universal wheel body (406) inside its interior. Each of the universal wheel steering seats (405) has a foot-operated brake pedal (407) on its outer surface.

5. A reversing movement device for a gantry crane according to claim 1, characterized in that: The hydraulic auxiliary component (6) includes a hydraulic pipeline (601), the outer surface of which is fixedly connected to a quick-connect coupling (602), and the side of the base (1) is provided with a manual pump interface (603).

6. A reversing movement device for a gantry crane according to claim 1, characterized in that: The outer surface of the equipment box (7) is provided with an operation panel (701), the outer surface of the equipment box (7) is suspended from the outer surface of the gantry crane legs, the inside of the equipment box (7) is provided with a PLC control module (702), and the inside of the equipment box (7) is provided with a wireless receiving module (703).

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