Portal crane for shipbuilding

Abstract

The utility model discloses a shipbuilding portal crane, which relates to the technical field of cranes and comprises a crane cross beam and support rods, the two supporting rods are vertically arranged below the left part and the right part of the crane cross beam respectively, so that the crane cross beam and the two supporting rods form a door type bracket structure; a moving mechanism is arranged at the bottom of the crane beam in a sliding mode, a hoisting mechanism is arranged at the lower end of the moving mechanism and used for hoisting and carrying goods, the moving mechanism conducts sliding limiting through conventional limiting wheels, a driving structure is changed to the bottom face of the crane beam, and a U-shaped sliding base is driven to transversely move in a gear and rack transmission mode. The overall size of the driving structure is effectively reduced, meanwhile, the moving speed is increased, and follow-up maintenance work is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, and more specifically, to a shipbuilding gantry crane. Background Art

[0002] A gantry crane, also known as a portal crane, is a kind of lifting equipment commonly used in places such as ports, freight yards, and railway freight stations. It is supported by one or more pairs of legs to support a crossbeam (i.e., a bridge), and can move on rails to facilitate the loading and unloading of goods or the handling of heavy objects.

[0003] During the working process of the existing shipbuilding gantry crane, for the lateral displacement driving mode of the lifting mechanism on the crossbeam, the method of directly driving the roller by a motor is adopted on the lifting mechanism to move in the notch of the crossbeam. In this transmission mode, in order to generate sufficient torque, the direct drive motor is often larger and heavier than the traditional motor, resulting in the need for a larger and more stable installation structure connected to the direct drive motor, which causes the overall volume of the lifting mechanism to be large and bulky, and the transverse movement speed to be slow. Summary of the Invention

[0004] Other features and advantages of the utility model will be described in the following specification, and will be partially obvious from the specification, or understood by implementing the utility model. The objectives and other advantages of the utility model can be achieved and obtained through the structures specifically pointed out in the specification and other specification drawings.

[0005] The purpose of the utility model is to overcome the above deficiencies and provide a shipbuilding gantry crane.

[0006] To achieve the above objective, the technical solution of the utility model is: a shipbuilding gantry crane, comprising: a crane crossbeam and support rods; there are two support rods, which are respectively vertically arranged below the left and right parts of the crane crossbeam, so that the crane crossbeam and the two support rods form a gantry support structure;

[0007] A moving mechanism is slidably arranged at the bottom of the crane crossbeam, and a lifting mechanism is arranged at the lower end of the moving mechanism for lifting and handling goods;

[0008] The moving mechanism includes a U-shaped sliding seat slidably clamped to the bottom of the crane crossbeam. A plurality of limiting wheels for sliding and limiting with the bottom of the crane crossbeam are vertically rotated inside the upper opening of the U-shaped sliding seat. An assembly groove with an opening facing the bottom surface of the crane crossbeam is arranged at the bottom of the U-shaped sliding seat, and a driving device is arranged in the assembly groove. The output end of the driving device faces upward and is horizontally provided with a transmission gear;

[0009] A positioning strip is arranged on the bottom surface of the crane crossbeam, and a toothed plate meshing with the transmission gear is horizontally arranged on the front end surface of the positioning strip.

[0010] Preferably, for the purpose of lifting goods, the lifting mechanism includes a winding motor fixedly connected to the moving mechanism. A lifting rope is drivably arranged at the output end of the winding motor, and a hook is provided at the bottom of the lifting rope.

[0011] Preferably, for the purpose of positioning the sliding of the U-shaped sliding seat, the cross-section of the crane beam is of an I-shaped structure, and the limiting wheel is in contact with the bottom surface of the I-shaped notch of the crane beam.

[0012] Preferably, for the purpose of improving the firmness of the connection, the positioning strip is connected to the crane beam by one of the methods of welding or integral molding.

[0013] Preferably, for the purpose of improving the driving efficiency, the driving device includes a worm and worm gear box and a motor. A worm gear output end connected to the transmission gear is provided at the top of the worm and worm gear box, a worm driving end is provided on one side of the worm and worm gear box, and the output end of the motor is connected to the worm driving end.

[0014] Preferably, for the purpose of having a high transmission ratio, the worm and worm gear box is composed of a housing and a worm and a worm gear meshing with each other inside the housing.

[0015] Preferably, for the purpose of facilitating control, it further includes an external control terminal, and the control terminal is connected to the moving mechanism and the lifting mechanism by radio signals.

[0016] Preferably, for the purpose of enabling the normal operation of the moving mechanism and the lifting mechanism, a wire structure for supplying power to the moving mechanism and the lifting mechanism is externally connected to the crane beam.

[0017] The beneficial effects of the present utility model are as follows: The moving mechanism uses a conventional limiting wheel for sliding limit, and the driving structure is changed to the bottom surface of the crane beam. In the transmission mode of a gear and a rack, the U-shaped sliding seat is driven to move horizontally, effectively reducing the overall volume of the driving structure, increasing the moving speed at the same time, and facilitating subsequent maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of a shipbuilding gantry crane of the present utility model;

[0019] Figure 2 is a front view structural schematic diagram of a shipbuilding gantry crane of the present utility model;

[0020] Figure 3 is a side view sectional structural schematic diagram of the moving mechanism;

[0021] Figure 4 is a structural schematic diagram of the driving device.

[0022] Reference numerals: Crane crossbeam - 1, support rod - 2, moving mechanism - 11, lifting mechanism - 12, U-shaped sliding seat - 111, limit wheel - 112, assembly groove - 113, driving device - 114, transmission gear - 115, positioning strip - 13, toothed plate - 14, winding motor - 121, lifting rope - 122, hook - 123, worm and worm gear box - 1141, motor - 1144, worm wheel output end - 1143, worm driving end - 1142. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0025] Please refer to Figures 1-4 , the present utility model provides a shipbuilding gantry crane, including: a crane crossbeam 1, a support rod 2; two support rods 2 are provided and are respectively vertically arranged below the left and right parts of the crane crossbeam 1, so that the crane crossbeam 1 and the two support rods 2 form a gantry support structure;

[0026] A moving mechanism 11 is slidably provided at the bottom of the crane crossbeam 1, and a lifting mechanism 12 is provided at the lower end of the moving mechanism 11 for lifting and transporting goods;

[0027] The moving mechanism 11 includes a U-shaped sliding seat 111 slidably clamped to the bottom of the crane crossbeam 1. A plurality of limit wheels 112 for sliding and limiting the bottom of the crane crossbeam 1 are vertically rotated inside the upper opening of the U-shaped sliding seat 111. An assembly groove 113 with an opening facing the bottom surface of the crane crossbeam 1 is provided at the bottom of the U-shaped sliding seat 111. A driving device 114 is provided in the assembly groove 113, and the output end of the driving device 114 faces upward and is horizontally provided with a transmission gear 115;

[0028] A positioning strip 13 is provided on the bottom surface of the crane crossbeam 1, and a toothed plate 14 meshing with the transmission gear 115 is horizontally provided on the front end surface of the positioning strip 13.

[0029] The moving mechanism 11 uses a conventional limit wheel 112 for sliding limit. The driving structure is changed to the bottom surface of the crane beam 1. In the form of gear-rack transmission, it drives the U-shaped sliding seat 111 to move horizontally, effectively reducing the overall volume of the driving structure, increasing the moving speed at the same time, and facilitating subsequent maintenance work. When in use, the output end of the driving device 114 drives the transmission gear 115 to rotate. With the cooperation of the engaged toothed plate 14, the U-shaped sliding seat 111 moves horizontally along the bottom of the crane beam 1.

[0030] According to some embodiments of the present application, optionally, for the work of lifting goods, the lifting mechanism 12 includes a winding motor 121 fixedly connected to the moving mechanism 11. A lifting rope 122 is drivably arranged at the output end of the winding motor 121. A hook 123 is arranged at the bottom of the lifting rope 122. The hook 123 is used to position the goods. Under the winding drive of the winding motor 121 on the lifting rope 122, the goods are lifted.

[0031] According to some embodiments of the present application, optionally, in order to position the sliding of the U-shaped sliding seat 111, the cross-section of the crane beam 1 is in an I-shaped structure, and the limit wheel 112 is in contact with the bottom surface of the I-shaped notch of the crane beam 1. However, the present application is not limited thereto. The cross-section of the crane beam 1 can also be an inverted T-shaped structure, as long as it can limit and position the limit wheel 112.

[0032] According to some embodiments of the present application, optionally, in order to improve the firmness of the connection, the positioning strip 13 is connected to the crane beam 1 by one of welding and integral molding. Integral molding is preferably used, and this connection facilitates the processing work.

[0033] According to some embodiments of the present application, optionally, in order to improve the driving efficiency, the driving device 114 includes a worm and worm gear box 1141 and a motor 1144. A worm gear output end 1143 connected to the transmission gear 115 is arranged at the top of the worm and worm gear box 1141. A worm driving end 1142 is arranged on one side of the worm and worm gear box 1141, and the output end of the motor 1144 is connected to the worm driving end 1142.

[0034] According to some embodiments of the present application, optionally, in order to have a high transmission ratio, the worm and worm gear box 1141 is composed of a housing and a worm and a worm gear meshing with each other inside the housing.

[0035] According to some embodiments of the present application, optionally, for the convenience of control, it further includes an external control terminal, and the control terminal is connected to the moving mechanism 11 and the lifting mechanism 12 by radio signals.

[0036] According to some embodiments of the present application, optionally, in order to enable the normal operation of the moving mechanism 11 and the lifting mechanism 12, a wire structure for supplying power to the moving mechanism 11 and the lifting mechanism 12 is externally connected to the crane crossbeam 1.

[0037] It should be understood that the embodiments disclosed in the present utility model are not limited to the specific processing steps or materials disclosed herein, but should extend to equivalent alternatives of such features understood by those of ordinary skill in the relevant art. It should also be understood that the terms used herein are for the purpose of describing specific embodiments only and do not imply limitation.

[0038] As used in the specification, the phrase "embodiment" means that a particular feature or characteristic described in connection with the embodiment is included in at least one embodiment of the present utility model. Thus, the phrase or "embodiment" that appears throughout the specification does not necessarily refer to the same embodiment.

[0039] In addition, the described features or characteristics may be combined in any other suitable manner into one or more embodiments. In the above description, some specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of the embodiments of the present utility model. However, those skilled in the relevant art will understand that the present utility model can be implemented without one or more of the above specific details or can also be implemented using other methods, components, materials, etc.

Claims

1. A shipbuilding gantry crane, characterized in that, Comprising: A crane crossbeam (1); Support rods (2), two of which are provided and are respectively vertically arranged below the left and right parts of the crane crossbeam (1), so that the crane crossbeam (1) and the two support rods (2) form a gantry support structure; A moving mechanism (11) is slidably arranged at the bottom of the crane crossbeam (1), and a lifting mechanism (12) is arranged at the lower end of the moving mechanism (11); The moving mechanism (11) includes a U-shaped sliding seat (111) slidably clamped at the bottom of the crane crossbeam (1). A number of limiting wheels (112) for sliding and limiting with the bottom of the crane crossbeam (1) are vertically rotated inside the upper opening of the U-shaped sliding seat (111). An assembly groove (113) with an opening facing the bottom surface of the crane crossbeam (1) is arranged at the bottom of the U-shaped sliding seat (111). A driving device (114) is arranged in the assembly groove (113). The output end of the driving device (114) faces upward and is horizontally provided with a transmission gear (115); A positioning strip (13) is arranged on the bottom surface of the crane crossbeam (1), and a toothed plate (14) meshing with the transmission gear (115) is horizontally arranged on the front end surface of the positioning strip (13).

2. The shipbuilding gantry crane according to claim 1, wherein, The lifting mechanism (12) includes a winding motor (121) fixedly connected to the moving mechanism (11). A lifting rope (122) is driven at the output end of the winding motor (121), and a hook (123) is arranged at the bottom of the lifting rope (122).

3. The shipbuilding gantry crane according to claim 1, characterized in that, The cross-section of the crane crossbeam (1) is of an I-shaped structure, and the limiting wheels (112) are in contact with the bottom surface of the I-shaped notch of the crane crossbeam (1).

4. The shipbuilding gantry crane according to claim 1, characterized in that, The positioning strip (13) is connected to the crane crossbeam (1) by one of welding and integral forming.

5. The shipbuilding gantry crane according to claim 1, wherein The driving device (114) includes a worm and gear box (1141) and a motor (1144). A worm gear output end (1143) connected to the transmission gear (115) is arranged at the top end of the worm and gear box (1141). A worm driving end (1142) is arranged on one side of the worm and gear box (1141), and the output end of the motor (1144) is connected to the worm driving end (1142).

6. The shipbuilding gantry crane according to claim 5, characterized in that, The worm and gear box (1141) is composed of a housing and a worm and a worm gear meshing with each other inside the housing.

7. A shipbuilding gantry crane according to claim 1, characterized in that, It also includes an external control terminal, and the control terminal is connected to the moving mechanism (11) and the lifting mechanism (12) by radio signals.

8. The shipbuilding gantry crane according to claim 1, characterized in that, The crane crossbeam (1) is externally connected with a wire structure for supplying power to the moving mechanism (11) and the lifting mechanism (12).

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