A single-beam tire-mounted gantry crane

Abstract

A single-girder tire-mounted gantry crane includes a main girder with outriggers fixed at both ends. A trolley traveling mechanism is located at the bottom of each outrigger. A lifting trolley is mounted on the main girder, and a lifting device is located below the trolley, connected to it via wire ropes. The crane also includes a control system and a power generation mechanism. The lifting trolley includes a trolley frame with wheels mounted at its bottom and a trolley traveling motor fixed to it. A first and second lifting drum are fixed to the top of the trolley frame. A crossbeam is located below the main girder, with a hook fixed to its bottom. Pulley assemblies are fixed at both ends of the crossbeam, connected to the first and second lifting drums via wire ropes. The trolley traveling mechanism is a tire-mounted type. This invention has a simple structure and is easy to use.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, and in particular relates to a single-beam tire-mounted gantry crane. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. It is also called an overhead crane, gantry crane, or hoist. Cranes include gantry cranes, bridge cranes, and tower cranes. A gantry crane generally consists of a main beam, outriggers, a traveling mechanism, a lifting trolley, a hoisting mechanism, an electrical control system, and a cab control mechanism. The traveling mechanism is usually mounted on parallel tracks laid on the ground. The main beam is generally composed of two parallel and spaced box beams. Current technology uses a double-beam mechanism, which results in a larger longitudinal section and a heavier crane, making it bulky, increasing production costs, and hindering steering. This presents numerous inconveniences in actual construction, such as difficulty in disassembly and relocation, difficulty in movement and steering, and significant limitations on usable space. For example, the lifting equipment can only operate at a distance from the wall, resulting in significant blind spots during lifting operations. Utility Model Content

[0003] To address the technical problems of the bulky structure and inconvenient turning of existing double-girder gantry cranes, this utility model provides a single-girder tire-mounted gantry crane. It includes a horizontally arranged main beam that provides support, with vertically arranged outriggers fixed at both ends. Flanges for connection are located at the bottom of the outriggers, and a trolley traveling mechanism (trolley-mounted) is located at the bottom of the outriggers. The trolley traveling mechanism includes a horizontally arranged lower beam, with the bottom of the outriggers fixed to the top of the lower beam via flanges. Vertically arranged support columns are fixed at both ends of the lower beam, and wheel frames are located below the support columns. A slewing mechanism is provided between the wheel frames and the support columns, allowing the wheel frames to be rotatably mounted at the bottom of the support columns via the slewing mechanism. The slewing mechanism includes a slewing support located between the wheel frames and the support columns, and a slewing motor fixed to one side of the support columns. The slewing motor is connected to the wheel frames via the slewing support and is connected to a power supply and a PLC controller via cables. The slewing motor drives the wheel frames to rotate at a certain angle via the slewing support. A horizontally mounted support shaft is rotatably mounted on the wheel frame. Both ends of the support shaft are fixed with trolley travel wheels, and a trolley travel motor is fixed on the wheel frame. The trolley travel motor is drive-connected to the support shaft. A reducer mechanism is installed on one side of the wheel frame of the trolley travel motor. The power input shaft of the reducer mechanism is drive-connected to the trolley travel motor. A drive sprocket is fixed on the power output shaft of the reducer. A driven sprocket is fixed in the middle of the support shaft. A transmission chain connects the drive sprocket and the driven sprocket. The trolley travel motor is connected to a power supply and a PLC controller via a cable. The trolley travel motor drives the driven sprocket to rotate through the drive sprocket, thereby rotating the trolley travel wheels on the support shaft, thus enabling the crane to move.

[0004] A lifting trolley is movably mounted on the main beam. A lifting device is located below the lifting trolley and is connected to the lifting trolley via a wire rope. The system also includes a control system and a power generation mechanism. The power generation mechanism is a diesel generator and includes a voltage stabilizing and rectifying mechanism to generate electricity and provide power to the crane. The lifting trolley includes a horizontally set trolley frame. Four rectangularly distributed trolley wheels are rotatably mounted at the bottom of the trolley frame. Two spaced trolley travel tracks parallel to the main beam are fixed at the top of the main beam. The trolley travel wheels are rotatably mounted on the trolley travel tracks. A trolley travel motor is fixed on the trolley frame and is connected to the trolley travel wheels via a drive connection. The trolley travel motor is connected to the power supply and PLC controller via a cable.

[0005] Two symmetrically arranged first and second lifting drums are fixed to the top of the trolley frame. The first and second lifting drums are located above the main beam on both sides. The trolley frame is equipped with lifting motors that provide power to the first and second lifting drums. These motors are connected to a power source and a PLC controller via cables. Starting the lifting motors causes the first and second lifting drums to rotate, and the lifting device is pulled vertically upwards or downwards via wire ropes. A horizontally arranged crossbeam is located below the main beam, providing support. A hook is fixed to the bottom of the crossbeam, which is spatially perpendicular to the main beam. Both ends of the crossbeam are fixed with movable pulley assemblies, which are connected to the first and second lifting drums via wire ropes.

[0006] Preferably, the two sides of the trolley frame are provided with several L-shaped anti-derailment frames to prevent the trolley from derailing. The top of the anti-derailment frame can be detachably fixed to the trolley frame. The top of the main beam is T-shaped, and the lower end of the anti-derailment frame extends to the lower side of the top of the main beam.

[0007] Preferably, the top of the trolley frame is provided with a protective canopy for protection.

[0008] Preferably, one of the outriggers is equipped with a ladder for workers to climb.

[0009] Preferably, it also includes a power control system and a power battery, with the power battery supplying power to all components, eliminating the need for a diesel generator set, and featuring low noise, environmental friendliness, energy saving, low operating costs, and a better user experience.

[0010] Preferably, the trolley frame is equipped with a safety hook to prevent the lifting trolley from bouncing and falling.

[0011] Preferably, chain interfaces and chain tensioning devices (not shown in the accompanying drawings and being prior art, serving to tension the chain) are fixed at both ends of the trolley frame, and drive sprocket mechanisms and guide sprocket mechanisms are fixed at both ends of the main beam. The drive sprocket mechanism consists of a drive motor reducer, a sprocket, and a sprocket seat, while the guide sprocket mechanism consists of a guide sprocket and a guide sprocket seat. The chain interfaces, chain tensioning devices, drive sprocket mechanisms, and guide sprocket mechanisms on the trolley are connected together by a chain to pull the trolley forward.

[0012] The above scheme has the following advantages:

[0013] The trolley traveling mechanism adopts a tire-type design, meaning that a slewing mechanism and a trolley traveling motor are installed at the bottom of the outriggers to drive the trolley traveling wheels. The trolley traveling motor drives the trolley traveling wheels to roll along the ground, and the slewing mechanism can drive the wheel frame to rotate through the slewing motor, adjusting the trolley traveling wheels to facilitate turning. The crane's main beam adopts a single-beam structure, which reduces the crane's own weight, facilitates production and assembly, saves costs, reduces lifting dead angles, and improves lifting efficiency. The anti-derailment frame prevents the crane trolley from derailing, improving safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0016] Figure 3 for Figure 2 Enlarged view of part A;

[0017] Figure 4 This is a schematic diagram of the main structure of the traveling mechanism of the trolley.

[0018] Figure 5 This is a schematic diagram of the left-side structure of the traveling mechanism of the trolley.

[0019] Reference numerals: 1. Main beam; 2. Outrigger; 3. Trolley traveling mechanism; 4. Slewing mechanism; 5. Lifting trolley; 6. Hoisting mechanism; 7. Lifting device; 8. Generating mechanism; 11. Trolley traveling track; 21. Lower end beam; 22. Ladder; 30. Support column; 31. Wheel frame; 32. Support shaft; 33. Trolley traveling wheel; 34. Drive sprocket; 35. Driven sprocket; 36. Transmission chain; 37. Trolley traveling motor; 41. Slewing support; 42. Slewing motor; 51. Trolley frame; 52. Trolley traveling mechanism; 53. Trolley traveling wheel; 54. Anti-derailment frame; 61. First hoisting drum; 62. Second hoisting drum; 63. Protective canopy; 71. Wire rope; 72. Crossbeam; 73. Moving pulley assembly; 74. Hook. Detailed Implementation

[0020] like Figure 1-5The single-girder tire-mounted gantry crane shown includes a horizontally arranged main beam 1, which serves as a support. Both ends of the main beam 1 are fixed with vertically arranged outriggers 2. The bottom of each outrigger 2 has a connecting flange. A trolley traveling mechanism 3 is located at the bottom of each outrigger 2. The trolley traveling mechanism 3 is a tire-mounted traveling mechanism. The trolley traveling mechanism 3 includes a horizontally arranged lower beam 21. The bottom of each outrigger 2 is fixed to the top of the lower beam 21 via flanges. Both ends of the lower beam 21 are fixed with vertically arranged support columns 30. The wheel frame 31 is provided, and a slewing mechanism 4 is provided between the wheel frame 31 and the support column 30. The wheel frame 31 is rotatably mounted on the bottom end of the support column 30 through the slewing mechanism 4. The slewing mechanism 4 includes a slewing support 41 provided between the wheel frame 31 and the support column 30, and a slewing motor 42 fixed on one side of the support column 30. The slewing motor 42 is connected to the wheel frame 31 through the slewing support 41. The slewing motor 42 is connected to the power supply and the PLC controller through a cable. The slewing motor 42 drives the wheel frame 31 to rotate a certain angle through the slewing support 41. A horizontally mounted support shaft 32 is rotatably mounted on the wheel frame 31. Both ends of the support shaft 32 are fixed with trolley travel wheels 33. A trolley travel motor 37 is fixed on the wheel frame 31 and is connected to the support shaft 32. A reducer mechanism is located on one side of the wheel frame 31 of the trolley travel motor 37. The power input shaft of the reducer mechanism is connected to the trolley travel motor 37. A drive sprocket 34 is fixed on the power output shaft of the reducer. A driven sprocket 35 is fixed in the middle of the support shaft 32. A transmission chain 36 connects the drive sprocket 34 and the driven sprocket 35. The trolley travel motor 37 is connected to a power supply and a PLC controller via a cable. The trolley travel motor 37 drives the driven sprocket 35 to rotate via the drive sprocket 34, thereby rotating the trolley travel wheels 33 on the support shaft 32, thus enabling the crane to move.

[0021] A lifting trolley 5 is movably mounted on the main beam 1. A lifting mechanism 6 is provided at the top of the lifting trolley 5, and a lifting device 7 is provided below the lifting trolley 5. The lifting device 7 is connected to the lifting trolley 5 via a wire rope 71. The system also includes a control system and a power generation mechanism 8. The power generation mechanism 8 is a diesel generator and also includes a voltage stabilizing and rectifying mechanism to generate electricity and provide power to the crane. The lifting trolley 5 includes a horizontally arranged trolley frame 51. A trolley traveling mechanism 52 is provided at the bottom of the trolley frame 51. The trolley traveling mechanism 52 includes four rectangularly distributed trolley traveling wheels 53 that are rotatably mounted at the bottom of the trolley frame 51. Two spaced trolley traveling tracks 11 parallel to the main beam 1 are fixed at the top of the main beam 1. The trolley traveling wheels 53 are rotatably mounted on the trolley traveling tracks 11. A trolley traveling motor (not shown in the attached diagram) is fixed on the trolley frame 51. The trolley traveling motor is connected to the trolley traveling wheels 53 via a transmission connection. The trolley traveling motor is connected to the power supply and the PLC controller via a cable.

[0022] The lifting mechanism 6 includes two symmetrically arranged first lifting drums 61 and second lifting drums 62 fixed to the top of the trolley frame 51. The first lifting drums 61 and second lifting drums 62 are located above the main beam 1 on both sides. The trolley frame 51 is equipped with a lifting motor (not shown in the attached diagram) that provides power to the first lifting drums 61 and second lifting drums 62. The lifting motor is connected to the power supply and PLC controller via a cable. When the lifting motor is started, it drives the first lifting drums 61 and second lifting drums 62 to rotate, and pulls the lifting device 7 vertically upward or downward via a wire rope 71. The lifting device 7 includes a horizontally arranged crossbeam 72 below the main beam 1, which serves as a support. A hook 74 is fixed to the bottom of the crossbeam 72. The crossbeam 72 is spatially perpendicular to the main beam 1. Both ends of the crossbeam 72 are fixed with movable pulley assemblies 73, which are connected to the first lifting drums 61 and second lifting drums 62 via wire ropes 71.

[0023] Preferably, the two sides of the trolley frame 51 are provided with a number of L-shaped anti-derailment frames 54 to prevent the trolley from derailing. The top of the anti-derailment frame 54 can be detachably fixed to the trolley frame 51. The top of the main beam 1 is T-shaped, and the lower end of the anti-derailment frame 54 extends to the lower side of the top of the main beam 1.

[0024] Preferably, the top of the trolley frame 51 is provided with a protective canopy 63 for protection.

[0025] Preferably, one of the support legs 2 is provided with a ladder 22 for easy climbing by workers.

[0026] Usage process:

[0027] In use, the power generation mechanism 8 provides power to the crane. When it is necessary to lift goods, the trolley travel motor 37 is started. The trolley travel motor 37 drives the driven sprocket 35 to rotate through the drive sprocket 34, thereby driving the trolley travel wheel 33 on the support shaft 32 to rotate. The trolley travel wheel 33 rolls along the ground, thereby moving the crane. When it is necessary to turn, the slewing motor 42 on the slewing mechanism 4 is started through the controller. The slewing motor 42 drives the trolley travel wheel 33 on the wheel frame 31 to rotate at a certain angle through the slewing support 41, realizing the turning of the crane. When the crane moves above the goods, the position of the lifting device 7 needs to be adjusted. The trolley travel motor is started. The trolley travel motor drives the trolley travel wheel 53 to move a certain position along the trolley travel track 11 at the top of the main beam 1. Then the hoisting motor is started. The hoisting motor drives the first hoisting drum 61 and the second hoisting drum 62 to rotate. The first hoisting drum 61 and the second hoisting drum 62 pull the lifting device 7 to rise or fall in the vertical direction through the wire rope 71, thereby lifting the goods.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical", 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.

[0029] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A single-girder tire-mounted gantry crane, comprising a horizontally arranged main girder, with vertically arranged outriggers fixed at both ends of the main girder, a trolley traveling mechanism at the bottom end of the outriggers, a movably mounted lifting trolley on the main girder, a lifting device below the lifting trolley, the lifting device being connected to the lifting trolley via a wire rope, and further comprising a control system and a power generation mechanism, characterized in that: The crane trolley includes a horizontally mounted trolley frame. Four rectangularly arranged trolley wheels are rotatably mounted at the bottom of the trolley frame. Two spaced, parallel trolley tracks are fixed to the top of the main beam. The trolley wheels are rotatably mounted on the trolley tracks. A trolley travel motor is fixed to the trolley frame and is connected to the trolley wheels via a transmission connection. Two symmetrically arranged first and second lifting drums are fixed to the top of the trolley frame, located above the sides of the main beam. A lifting motor provides power to the first and second lifting drums. A horizontally mounted crossbeam is located below the main beam, with a hook fixed to its bottom. The crossbeam is spatially perpendicular to the main beam. Both ends of the crossbeam are fixed with movable pulley assemblies, which are connected to the first and second lifting drums via wire ropes. The trolley travel mechanism is a tire-type travel mechanism.

2. A single-girder tyre crane according to claim 1, characterised in that: The trolley traveling mechanism includes a horizontally arranged lower beam, the top of which is fixed to the bottom of the outriggers. Vertically arranged support columns are fixed to both ends of the lower beam. A wheel frame is located below the support columns. A slewing mechanism is provided between the wheel frame and the support columns. The wheel frame can be rotatably mounted to the bottom of the support columns through the slewing mechanism. A horizontally arranged support shaft is rotatably mounted on the wheel frame. Trolley traveling wheels are fixed to both ends of the support shaft. A trolley traveling motor is fixed on the wheel frame. The trolley traveling motor is connected to the support shaft for transmission.

3. A single-girder tyre crane according to claim 2, characterised in that: A speed reducer mechanism is installed on the wheel frame on one side of the trolley travel motor. The power input shaft of the speed reducer mechanism is connected to the trolley travel motor. A drive sprocket is fixed on the power output shaft of the speed reducer, and a driven sprocket is fixed in the middle of the support shaft. A transmission chain is provided between the drive sprocket and the driven sprocket.

4. A single-girder tyre crane according to claim 3, characterised in that: The slewing mechanism includes a slewing support disposed between the wheel frame and the support column, and a slewing motor fixed to one side of the support column. The slewing motor is connected to the wheel frame via the slewing support.

5. A single-girder tyre crane according to claim 1, characterised in that: The trolley frame has several L-shaped anti-derailment frames on both sides to prevent the trolley from derailing. The top of the anti-derailment frame can be detachably fixed to the trolley frame. The top of the main beam is T-shaped, and the lower end of the anti-derailment frame extends to the lower side of the top of the main beam.

6. A single-girder tyre crane according to claim 1, characterised in that: The top of the car frame is equipped with a protective canopy for protection.

7. A single-girder tyre crane according to claim 1, characterised in that: One of the support legs is equipped with a ladder for workers to climb.

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