Movable gantry crane

Abstract

The utility model relates to the technical field of gantry cranes, in particular to a movable gantry crane which comprises a U-shaped frame A, a U-shaped frame B, a sliding frame and a driving assembly B. A group of power wheels are arranged at each corner of the bottom of the U-shaped frame A, and two supporting columns are symmetrically arranged on the U-shaped frame A; two supporting arms of the U-shaped frame B are rotationally connected with the supporting columns on the corresponding sides correspondingly, a lifting assembly is arranged at the transverse end of the U-shaped frame B, and a driving assembly A used for adjusting the inclination angle between the U-shaped frame B and the U-shaped frame A is arranged on the U-shaped frame A; the sliding frame is arranged on the inner side of an opening of the U-shaped frame A and is in sliding connection with the U-shaped frame A; the driving assembly B is arranged on the U-shaped frame A, and the driving assembly B drives the sliding frame to slide along the transverse end of the U-shaped frame A in a working state. According to the lifting device, the conveying direction can be rapidly switched, lifted objects can be protected, meanwhile, the U-shaped frame B can be adjusted in a self-adaptive mode when the lifting device moves on a slope, the U-shaped frame B is kept in a vertical state all the time, and rollover is avoided.

Description

Technical Field

[0001] This utility model relates to the field of gantry crane technology, and in particular to a mobile gantry crane. Background Technology

[0002] A gantry crane is a type of lifting equipment primarily used to solve lifting problems in sites with large spans, heavy loads, and high lifting heights. It consists of horizontal bars, diagonal braces, columns, and anchors, and is typically constructed as a single piece of steel, made from materials such as steel plates. The design and manufacture of gantry cranes incorporates Western technology, exhibiting characteristics of modern lifting equipment. Most existing gantry cranes are fixed installations that move along existing tracks, but there are also mobile gantry cranes.

[0003] Chinese patent CN221836615U discloses a movable telescopic lifting gantry crane. This gantry crane is equipped with clamping plates. When the gantry crane lifts an object, the clamping plates clamp the object to prevent it from swinging randomly during the lifting process and thus injuring the operator, and to improve the stability of clamping the object on both sides.

[0004] However, the device still has shortcomings: when the gantry crane moves and transports objects on a slope, it is prone to tipping over, and it requires traction equipment when going up or down slopes, otherwise it is easy to slip. Utility Model Content

[0005] The purpose of this utility model is to address the problems existing in the background technology by proposing a mobile gantry crane.

[0006] The technical solution of this utility model is: a mobile gantry crane, including a U-shaped frame A, with a set of power wheels set at each corner of the bottom of the U-shaped frame A, and two support columns symmetrically arranged on the U-shaped frame A;

[0007] U-shaped frame B, with its two support arms rotatably connected to the support columns on the corresponding sides, a lifting assembly is provided at the horizontal end of U-shaped frame B, and a drive assembly A is provided on U-shaped frame A to adjust the tilt angle between U-shaped frame B and U-shaped frame A;

[0008] The carriage is set inside the opening of the U-shaped frame A and is slidably connected to both horizontal ends of the U-shaped frame A;

[0009] And drive component B, which is mounted on U-shaped frame A, drives the carriage to slide along the horizontal end of U-shaped frame A when in operation.

[0010] Preferably, a caster wheel is installed on the U-shaped frame A below each of the two support columns.

[0011] Preferably, the power wheel includes a Mecanum wheel and a motor. A wheel frame is provided at the bottom of the U-shaped frame A. The Mecanum wheel is rotatably connected to the wheel frame. The motor body is connected to the wheel frame. The output end of the motor is connected to the mounting shaft of the Mecanum wheel.

[0012] Preferably, the drive assembly A includes a hydraulic cylinder, a tilt sensor, and a controller. The body of the hydraulic cylinder is rotatably connected to the U-shaped frame A, and the movable end of the hydraulic cylinder is rotatably connected to the U-shaped frame B. The tilt sensor and the controller are both mounted on the U-shaped frame B, and the control valves of the tilt sensor and the hydraulic cylinder are electrically connected to the controller.

[0013] Preferably, a guide rail is provided on each side of the two support arms of the U-shaped frame A that are close to each other, and the two ends of the carriage are respectively locked on the guide rails on the corresponding sides and slidably connected to them.

[0014] Preferably, a movable plate A is provided on the carriage and rotatably connected thereto. A movable plate B is rotatably provided at the end of the movable plate A away from the carriage. A spline shaft is provided at the end of the movable plate B away from the movable plate A. The spline shaft is rotatably connected to the U-shaped frame A, and a coil spring for driving the spline shaft to rotate is provided on the U-shaped frame A.

[0015] Preferably, the drive assembly B includes a scissor-type telescopic frame and a hydraulic cylinder B for driving the telescopic frame to extend and retract. The body of the scissor-type telescopic frame is connected to the U-shaped frame A, and the movable part of the scissor-type telescopic frame is connected to the slide.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] By incorporating a Mecanum wheel and a motor that independently controls its rotation, the device can quickly adjust the transport direction, and the operating speed is controlled by the motor, improving the overall ease of operation. By setting up a rotatable connection between U-shaped frame B and U-shaped frame A, and using a hydraulic cylinder to adjust the tilt angle between them, U-shaped frame B can be kept vertical when going up or down slopes, thus preventing the entire device from tipping over. Furthermore, by using a sliding carriage driven by drive component B, the object being lifted is provided with auxiliary support, preventing it from swaying during transport and improving the stability of the gantry crane. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0019] Figure 2 A schematic diagram showing the connection structure between the carriage, movable plate A and movable plate B and the U-shaped frame A;

[0020] Figure 3 for Figure 2 Enlarged view of section A;

[0021] Figure 4 This is a schematic diagram of the connection structure between the carriage, the drive assembly, and the movable plate.

[0022] Reference numerals: 1. U-shaped frame A; 101. Circular groove; 2. Mecanum wheel; 3. Motor; 4. Support column; 5. Caster wheel; 6. U-shaped frame B; 7. Winch; 8. Hook; 9. Hydraulic cylinder; 10. Tilt sensor; 11. Guide rail; 12. Carriage; 13. Movable plate A; 14. Movable plate B; 15. Splined shaft; 16. Coil spring; 17. Drive assembly B. Detailed Implementation

[0023] Example 1

[0024] like Figures 1-4 As shown, this utility model proposes a mobile gantry crane, including a U-shaped frame A1, a U-shaped frame B6, a carriage 12, and a drive assembly B17. A set of power wheels is installed at each corner of the bottom of the U-shaped frame A1, and two support columns 4 are symmetrically arranged on the U-shaped frame A1. The power wheels include Mecanum wheels 2 and motors 3. A wheel frame is installed at the bottom of the U-shaped frame A1, with the Mecanum wheels 2 rotatably connected to the wheel frame. The motor 3 is connected to the wheel frame, and its output end is connected to the mounting shaft of the Mecanum wheels 2. A caster wheel 5 is installed below each of the two support columns 4 on the U-shaped frame A1. The two support arms of the U-shaped frame B6 are rotatably connected to the corresponding support columns 4. A lifting assembly is installed at the horizontal end of the U-shaped frame B6, including a winch 7 and a hook 8 driven by the winch 7 to rise or fall. A drive assembly A is installed on the U-shaped frame A1 to adjust the tilt angle between the U-shaped frame B6 and the U-shaped frame A1. Drive assembly A includes a hydraulic cylinder 9, a tilt sensor 10, and a controller, which is a PLC controller. The body of the hydraulic cylinder 9 is rotatably connected to the U-shaped frame A1, and the movable end of the hydraulic cylinder 9 is rotatably connected to the U-shaped frame B6. The tilt sensor 10 and the controller are both mounted on the U-shaped frame B6, and the control valves of the tilt sensor and the hydraulic cylinder 9 are electrically connected to the controller. A guide rail 11 is provided on each side of the two support arms of the U-shaped frame A1 that are close to each other. The two ends of the slide 12 are respectively engaged with and slidably connected to the guide rails 11 on the corresponding sides. Several casters 5 are also provided at the bottom of the slide 12, and the casters 5 and Mecanum wheels 2 are simultaneously grounded. Drive assembly B17 includes a scissor-type telescopic frame and a hydraulic cylinder B that drives the scissor-type telescopic frame to extend and retract. The body of the scissor-type telescopic frame is connected to the U-shaped frame A1, and the movable part of the scissor-type telescopic frame is connected to the slide 12. In operation, drive assembly B17 drives the slide 12 to slide along the horizontal end of the U-shaped frame A1. The U-shaped frame A1 is also equipped with an energy storage battery, a hydraulic pump, and a wireless signal transceiver. The hydraulic pump is connected to hydraulic cylinder 9 and hydraulic cylinder B, and the energy storage battery is electrically connected to each electrical component. The controller is connected to a remote control (or user terminal device, such as a mobile phone) via the wireless signal transceiver.

[0025] In this embodiment, the device is remotely driven to move, positioning the object inside the opening of the U-shaped frame A1. The hook 8 below the winch 7 is activated, using the hook 8 to hook the object or the rope tied to the object. The winch 7 pulls up the hook, causing the object to rise above the slide 12. Then, the hydraulic cylinder B drives the scissor-type telescopic frame, which pushes the slide 12 to move it below the object. The object is then slowly released, landing on the slide 12. The slide 12 serves only as an auxiliary support structure, and the hook 8 still needs to maintain tension on the object. Subsequently, the control device moves. When it moves to the slope, the tilt angle of the U-shaped frame A1 changes. At this time, the tilt angle sensor 10 detects the tilt angle change and feeds the signal back to the controller. The controller controls the hydraulic cylinder 9 to start, driving the U-shaped frame B6 to rotate around the pivot on the support column 4, keeping the U-shaped frame B6 vertical and thus preventing the entire gantry crane from tipping over.

[0026] Example 2

[0027] like Figure 1 , Figure 2 and Figure 4 As shown, the present invention proposes a mobile gantry crane. Compared with the first embodiment, the slide 12 is provided with a movable plate A13 rotatably connected to it. A movable plate B14 is rotatably provided at the end of the movable plate A13 away from the slide 12. A spline shaft 15 is provided at the end of the movable plate B14 away from the movable plate A13. The spline shaft 15 is rotatably connected to the U-shaped frame A1, and a coil spring 16 is provided on the U-shaped frame A1 to drive the spline shaft 15 to rotate.

[0028] In this embodiment, to facilitate the support of large-volume objects, the slide 12 is pushed to slide by the drive component B17. The slide 12 drives the movable plate A13 and movable plate B14 to gradually unfold and fall on the guide rail 11. The movable plate A13 and movable plate B14 provide auxiliary support for large-volume objects. During the rotation of the movable plate B14, the coil spring 16 continues to generate potential energy. When the slide 12 slides back to its original position, the coil spring 16 releases potential energy and drives the movable plate B14 to rotate, so that the movable plate B14 and movable plate A13 can be folded together, reducing the space occupied by them at the opening of the U-shaped frame A1, which facilitates the lifting and release of large-volume materials.

[0029] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A mobile gantry crane, characterized in that, include: U-shaped frame A(1), with a set of power wheels at each corner of the bottom of U-shaped frame A(1), and two support columns (4) symmetrically arranged on U-shaped frame A(1); U-shaped frame B (6), the two support arms of U-shaped frame B (6) are rotatably connected to the support column (4) on the corresponding side respectively, a lifting component is provided at the horizontal end of U-shaped frame B (6), and a drive component A is provided on U-shaped frame A (1) for adjusting the tilt angle between U-shaped frame B (6) and U-shaped frame A (1); The slide (12) is set inside the opening of the U-shaped frame A (1) and is slidably connected to both horizontal ends of the U-shaped frame A (1); And drive component B (17), which is set on U-shaped frame A (1). In the working state, drive component B (17) drives slide (12) to slide along the horizontal end of U-shaped frame A (1).

2. A mobile gantry crane according to claim 1, characterized in that, On the U-shaped frame A (1), a caster wheel (5) is installed below each of the two support columns (4).

3. A mobile gantry crane according to claim 1, characterized in that, The power wheel includes a Mecanum wheel (2) and a motor (3). A wheel frame is set at the bottom of the U-shaped frame A (1). The Mecanum wheel (2) is rotatably connected to the wheel frame. The body of the motor (3) is connected to the wheel frame. The output end of the motor (3) is connected to the mounting shaft of the Mecanum wheel (2).

4. A mobile gantry crane according to claim 1, characterized in that, The drive assembly A includes a hydraulic cylinder (9), an inclination sensor (10), and a controller. The body of the hydraulic cylinder (9) is rotatably connected to the U-shaped frame A (1), and the movable end of the hydraulic cylinder (9) is rotatably connected to the U-shaped frame B (6). The inclination sensor (10) and the controller are both mounted on the U-shaped frame B (6). The control valves of the inclination sensor and the hydraulic cylinder (9) are electrically connected to the controller.

5. A mobile gantry crane according to claim 1, characterized in that, A guide rail (11) is provided on one side of the two support arms of the U-shaped frame A (1) that are close to each other. The two ends of the slide (12) are respectively locked on the guide rail (11) on the corresponding side and slidably connected to it.

6. A mobile gantry crane according to claim 1, characterized in that, A movable plate A (13) is rotatably connected to the slide (12). A movable plate B (14) is rotatably connected to the end of the movable plate A (13) away from the slide (12). A spline shaft (15) is provided at the end of the movable plate B (14) away from the movable plate A (13). The spline shaft (15) is rotatably connected to the U-shaped frame A (1), and a coil spring (16) is provided on the U-shaped frame A (1) to drive the spline shaft (15) to rotate.

7. A mobile gantry crane according to claim 1, characterized in that, The drive assembly B (17) includes a scissor-type telescopic frame and a hydraulic cylinder B for driving the telescopic frame to extend and retract. The body of the scissor-type telescopic frame is connected to the U-shaped frame A (1), and the movable part of the scissor-type telescopic frame is connected to the slide (12).

Images