CN202358850U - Light lift-type cantilever crane - Google Patents

Abstract

Light lifting jib crane, including hydraulic chain lifting device, lower section of boom, guide pulley, rack and pinion lifting device, middle section of boom, upper section of boom, hook, jib crane, manual chain hoist , power supply box, hoist, five-stage working pedal, working platform, foot screw, the hydraulic chain lifting device is located at the right end of the lower section of the boom, and a guide is installed at the left end of the lower section of the boom. The pulley, the lower section of the boom, the middle section of the boom, and the upper section of the boom are sequentially connected together. The middle section of the middle section of the boom is equipped with a rack and pinion lifting device, and the upper section of the boom is connected with a Cantilever crane, the upper part of the cantilever crane is equipped with a hook, the working platform and the lower section of the boom are supported by a five-stage working pedal, and the right end of the working platform is installed with a foot screw. The utility model moves the crane to a suitable position, and adjusts the feet to a suitable height.

Description

Light Lifting Jib Crane

technical field

The utility model relates to a crane, in particular to a light lifting type cantilever crane.

Background technique

Indoor and outdoor electrical equipment installation and other engineering work sites are narrow, without large-scale driving, and special vehicles cannot enter and exit; the new substation has no cement gantry, and it is very difficult to load and unload larger equipment without a crane; there are problems in the traditional lifting operation process: large special vehicles It is difficult to enter and exit the operation area, and the access and operation will greatly damage the green space; the operation space is limited, which is not conducive to the simultaneous operation of two large special machines; Realize lean management; in case of heavy production tasks, special vehicles are running at full capacity, and there is not enough special vehicles to carry out work.

Utility model content

The technical problem solved by the utility model is to provide a light lifting jib crane to solve the above-mentioned shortcomings in the background technology.

The technical problem solved by the utility model adopts the following technical solutions to realize:

Light lifting jib crane, including hydraulic chain lifting device, lower section of boom, guide pulley, rack and pinion lifting device, middle section of boom, upper section of boom, hook, jib crane, manual chain hoist , power supply box, hoist, five-stage working pedal, working platform, foot screw, the hydraulic chain lifting device is located at the right end of the lower section of the boom, and a guide is installed at the left end of the lower section of the boom. The pulley, the lower section of the boom, the middle section of the boom, and the upper section of the boom are sequentially connected together. The middle section of the middle section of the boom is equipped with a rack and pinion lifting device, and the upper section of the boom is connected with a Cantilever crane, the upper part of the cantilever crane is equipped with a hook, the working platform and the lower section of the boom are supported by a five-stage working pedal, the right end of the working platform is installed with a foot screw, and the hoist is installed On the working platform, connected with the guide pulley through the wire rope, the power supply box is installed on the working platform, and the manual chain hoist is installed at the lower part of the boom middle section.

Beneficial effect

The utility model has fast loading and transportation, flexible and convenient movement, and safe and efficient hoisting. The utility model is specially designed for the technical transformation and installation of some primary equipment in the substation. The crane considers that many areas of the substation are not conducive to large-scale cranes for on-site operations. The small size of the crane makes it easy to move and pass through the equipment, and it can replace and install the equipment below 1 ton. It is especially suitable for the installation of GIS stations without traffic and the installation of lightning arresters and isolating switches with a voltage level of 220kV and below. The utility model moves the crane to a suitable position, adjusts the feet to a suitable height, ensures the level of the platform (the sleepers can be placed under the feet when the ground is uneven), erects the boom when the telescopic arm is contracted, and adjusts the height of the upper section by using gears to lift and lower , Adjust the middle and upper sections to the appropriate height through the hydraulic system, and fix the telescopic arm; slowly lift the heavy object to the appropriate position, and use the chain hoist to adjust the angle of the cantilever crane, so as to achieve precise alignment.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.

See Figure 1, the structural schematic diagram of a light lifting jib crane. The light lifting jib crane includes a hydraulic chain lifting device 1, a lower section of the boom 2, a guide pulley 3, a rack and pinion lifting device 4, and a middle section of the boom. Section 5, jib upper section 6, suspension hook 7, cantilever crane 8, manual chain hoist 9, power supply box 10, hoist 11, five-stage working pedal 12, working platform 13, foot screw 14, the hydraulic chain lifting The lifting device 1 is located at the right end of the lower section 2 of the boom, the guide pulley 3 is installed on the left end of the lower section 2 of the boom, the lower section 2 of the boom, the middle section 5 of the boom, and the The upper sections 6 are connected together in turn, the middle section of the boom middle section 5 is equipped with a rack and pinion lifting device 4, the upper section 6 of the boom is connected with a cantilever crane 8, and the upper part of the cantilever crane 8 is installed with The hook 7 is supported by the five-stage working pedal 12 between the working platform 13 and the lower section 2 of the boom. The right end of the working platform 13 is equipped with a foot screw 14. The hoist 11 is installed on the working platform 13 and is connected with the guide pulley 3 through a wire rope, the power supply box 10 is installed on the working platform 13, and the manual chain hoist 9 is installed at the lower part of the middle section 5 of the boom.

The lifting of the boom between the upper section 6 of the boom and the middle section 5 of the boom depends on the rack and pinion lifting device 4, and the lifting of the telescopic boom between the middle section 5 of the boom and the lower section 2 of the boom depends on the hydraulic chain. Lifting device 1, the lifting arm made of opposite steel adopts U-shaped hollowing process to reduce its weight and facilitate lifting; the lifting arm is designed upside down (the rotating shaft is designed at a suitable position in the lower section), and the lifting arm is laid down to effectively reduce the occupation. The entire boom is divided into three sections: the lower section 2 of the boom, the middle section 5 of the boom, and the upper section 6 of the boom. When in use, its height can be adjusted according to the actual lifting height, effectively reducing crane transportation and storage. space occupied;

In actual engineering, it is often encountered that after the equipment is hoisted to a suitable position, it needs to be slightly adjusted to meet the alignment requirements. The utility model utilizes the lever principle to design a cantilever crane, which can apply pulling force to the tail end of the cantilever crane through the manual chain hoist 9, and the maximum angle of raising and lowering can reach 40 degrees, and the fine adjustment of the angle in the process of centering can be realized.

The lifting power is provided by the electric hoist 11 with a rated tension of 10 kN, and the steel wire rope is slowly output. After the steel wire rope is guided by the guide pulley 3, it is output to the movable hook 7 through the fixed pulley at the top of the cantilever suspension, so that the wire rope can be lifted at a speed of 0.22 m/min. Evenly lift heavy objects.

The working platform adopts an H-shaped design when viewed from above. The free part at the front end is used to fix the hoisting power source—the hoist 11, and the free part at the rear end is used to be as close as possible to the position to be hoisted when lifting heavy objects; the working platform 13 is equipped with Two roller wheels, of which the front two wheels are assembled side by side for guidance. Operating platform 13 is driven and relies on manpower; The utility model assembles steel plate footing screw rod 14 under operating platform 13, and firm operating platform 13 usefulness when for hoisting operation. Firm, stable support work platform 13 is very critical to later stage safe lifting heavy object. The foot screw rod 14 is used in conjunction with the nut fixed on the work platform 13, and can be moderately lifted to adjust the level of the work platform 13.

The above shows and describes the basic principles and main features of the present utility model and the advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and description are only illustrations The principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model also has various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed for protection. The desired protection is defined by the appended claims and their equivalents.

Claims (2)

1. Light lifting jib crane, including hydraulic chain lifting device, lower section of boom, guide pulley, rack and pinion lifting device, middle section of boom, upper section of boom, hook, jib crane, manual Chain hoist, power supply box, hoist, five-stage working pedal, working platform, and foot screw, it is characterized in that the hydraulic chain lifting device is located at the right end of the lower section of the boom, and the left section of the lower section of the boom is The side end is equipped with a guide pulley, and the lower section of the boom, the middle section of the boom, and the upper section of the boom are connected together in sequence, and a rack and pinion lifting device is installed in the middle section of the boom. The upper section of the boom is connected with a cantilever crane, and a hook is installed on the upper part of the cantilever crane. The working platform and the lower section of the boom are supported by a five-stage working pedal, and the right end of the working platform is installed with a foot screw. 2. The light-duty lifting jib crane according to claim 1, wherein the winch is installed on the work platform, and is connected with the guide pulley through a wire rope, a power supply box is installed on the work platform, and the The manual chain hoist is installed at the lower part of the middle section of the boom.

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