Rubber tire container gantry crane

Abstract

The invention discloses a rubber tire container gantry crane. The hoisting mechanism of the rubber tire container gantry crane is composed of a hydraulic pump station and four multistage hydraulic oil cylinders, wherein the hydraulic pump station and the hydraulic oil cylinders are respectively mounted on the upper and lower sides of a trolley frame, synchronous telescoping of each hydraulic oil cylinder is controlled by the hydraulic valve of the hydraulic pump station, and a sling is cooperatively used so as to realize loading and unloading of containers. According to the invention, usage of a traditional hoisting mechanism above the trolley frame is discarded; a series of electrical control components and parts for electrical control are not used, so a structure is substantially simplified, weight is decreased and cost is reduced; the driving axle of a cart travel mechanism of the crane is connected with a driving mechanism through a chain connected with the sprocket wheel of a transmission shaft so as to provide power for running of the whole machine, the driving axle is connected with a driving vehicle frame through a bearing pedestal on the transmission shaft so as to support the whole machine, and the driving axle is connected with the rim of a wheel through a rim flange on the transmission shaft so as to transmit power of the driving mechanism to the wheel, thereby realizing operation of the whole machine; traditional complex axle housing and axle package structures are not used, and corresponding defects caused by the axle housing and axle package structures are overcome.

Description

technical field [0001] The invention relates to a gantry crane, in particular to a tire-type container gantry crane. Background technique [0002] At present, the tire-type container gantry cranes or rail-type container gantry cranes used in ports, docks, and cargo yards mainly adopt two sets of traditional symmetrical arrangements consisting of motors, couplings, floating shafts, and brakes. , reducer, reel set, pulley block, wire rope, etc. composed of a combined structure. This structure is not only large in size, but also heavy in weight (for example, the weight of the lifting mechanism of a container gantry crane with a lifting capacity of 35t under the spreader is mostly more than 10t), high maintenance costs, and high overall manufacturing costs; traditional lifting mechanisms It is mainly realized by steel wire rope. The steel wire rope is a flexible body. When the crane transfers the goods, due to the start and stop of the various mechanisms of the large and small ...

AI Technical Summary

Problems solved by technology

This structure is not only large in size, but also heavy in weight (for example, the weight of the lifting mechanism of a container gantry crane with a lifting capacity of 35t under the spreader is mostly more than 10t), high maintenance costs, and high overall manufacturing costs; traditional lifting mechanisms It is mainly realized by steel wire rope. The steel wire rope is a flexible body. When the crane transfers the goods, due to the start and stop of the various mechanisms of the large and small vehicles or the action of the wind load, the spreader or the goods shake greatly in the air, and the spreader or the container is not easy to align. The production efficiency It is difficult to adapt to the automatic container yard operation; the current measures to reduce the large sway of the spreader in the air are mainly realized by using multiple steel wire ropes and winches. This method makes the trolley assembly and the control system of the whole machine more complicated and maintenance Convenience, the weight of the trolley assembly increases, and the cost increases; the spreader balance adjustment device is mainly realized by electro-hydraulic push rods and levers, the adjustment accuracy is low, and the balance can only be adjusted in one direction; the structure of the trolley is mostly bridge crane structure, Large size, heavy weight, and high manufacturing cost; the drive axle of the wheeled container gantry crane cart operating mechanism is mostly a structure with an axle housing and an axle package, which is more complicated, high maintenance cost, heavy weight, and requires many additional transmission parts , the production cost is high; the driving axle or driven axle of the wheeled container gantry crane is rigidly connected with the frame, and vibration reduction is achieved by the deformation of the tire itself. If the crane is traveling on an uneven road, the tires at both ends of the same axle will There is a large difference in force conditions, and the vibration reduction and release of part of the external force cannot be achieved by the deformation of the tire itself, which will seriously affect the service life of the axle; because the lifting mechanism is two sets of traditional combined structures, it is necessary to ensure the lifting capacity and lifting capacity. In the case of increasing speed, the power of the motor needs to be large, that is, the types of electrical components such as frequency converters and resistors selected for electrical control are also large, resulting in high cost of the whole machine; the container spreader must be equipped with pulley blocks, and also A spreader cable must be installed; since the lifting mechanism is a traditional combined structure, a machine room with rainproof and heat insulation functions must be set above the trolley frame, and a hoisting facility for the maintenance of the mechanism must also be provided in the machine room. device, resulting in a large increase in the weight of the trolley assembly and high manufacturing costs; because the trolley frame is a traditional bridge crane structure with a machine room on the top and the section of the steel structure in the following section increases, the windward area of ​​the whole machine increases. Affect the stability of the whole machine

At the same time, the structure of the container spreader will also increase

In order to meet the requirements of crane design specifications, the above characteristics will increase the cross-sectional size of steel structural parts such as the main girder, outriggers, and trolley frames of the crane, increase the weight of the whole machine, and increase the size of the motor and reducer of the operating mechanism of the large and small vehicles. The production cost of the whole machine has risen, and the market competitiveness has been greatly reduced

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