CN201288030Y - Balanced type energy conservation crane - Google Patents

Abstract

Balanced energy-saving crane, the hoisting wire rope (2) is wound on the hoisting drum (4) via the boom pulley (3) on the spreader (1) on one side of the boom (9) of the crane. In that: the lifting drum (4) is opposite to the direction of the lifting wire rope (2) and is wound with a balance wire rope (5), and the other end of the balance wire rope (5) is connected to the balance arm of the crane (9). The balance weight (8) on one side is connected. The potential energy of the spreader (1) and the potential energy of the balance counterweight (8) are mutually converted, the energy utilization rate is high, and the energy saving effect is obvious. The position of the balance counterweight (8) is changed by adjusting the centering pulley block (7) to adjust the position of the center of gravity of the crane (9) to enhance the stability of the whole machine. The specifications and models of the matching motors, reducers and other components are reduced, which reduces the cost. It can be widely applied to cranes such as portal cranes, quay cranes, yard cranes, portal cranes, grab ship unloaders, and portal cranes.

Description

Balanced energy-saving crane

technical field

The utility model relates to a lifting transport equipment, in particular to a balanced energy-saving crane.

Background technique

Portal cranes, grab ship unloaders, quay cranes, yard cranes, gantry cranes and other cranes with heavy weight spreaders such as grab buckets, container spreaders, electromagnetic suckers, etc., the spreaders must be lifted during the lifting process. Expend energy and release energy on the way down. The previous solution is to increase the driving power of the hoisting winch reel motor, oil motor, diesel engine, etc., and use the energy feedback system of the generator, resistance consumption, or the natural loss of friction and heat generated by system braking when descending. The energy feedback system using generators is costly, the energy recovery is disordered due to irregularity, and the utilization rate is low, commonly known as garbage power. Moreover, there is also an efficiency loss in the conversion of mechanical energy and electrical energy.

Contents of the invention

The purpose of this utility model is to propose a simple structure, easy to manufacture and use, equipment can It is a balanced energy-saving crane with low power consumption and can increase the overall stability of the crane.

The purpose of this utility model is achieved by the following methods: a balanced energy-saving crane, the hoisting wire rope on the hoisting gear on one side of the boom of the crane is wound on the hoisting drum through the boom pulley, and the hoisting drum There is also a balance wire rope wound on the cylinder in the opposite direction to the lifting wire rope, and the other end of the balance wire rope is connected to the balance counterweight on one side of the balance arm of the crane.

The balance steel wire rope is connected with the balance counterweight through the balance arm pulley and the self-aligning pulley set arranged on one side of the balance arm of the crane.

The torque generated by the balance wire rope on the lifting drum is equal to the torque generated when the hoisting wire rope only bears the weight of the spreader.

The lifting wire rope and the balance wire rope are connected end to end and wound on the hoisting drum, one end of which is connected to the sling, and the other end is connected to the balance counterweight.

A rope fixing device is provided on the hoisting drum corresponding to the end-to-end connection part of the hoisting wire rope and the balance wire rope.

Compared with the prior art, the utility model has the following obvious advantages:

1. Using the principle of balance, the potential energy is converted inside the device. That is, the potential energy of the spreader and the potential energy of the balance counterweight are converted to each other. When the spreader is raised, the balance counterweight is lowered. When the spreader is lowered, the balance counterweight is raised. When working, only the load does work, and the energy utilization rate is high, which can greatly reduce the power consumption of the lifting drum, and the energy saving effect is obvious.

2. There is an adjustable pulley set on one side of the balance arm of the crane, which can adjust the distance from the balance weight to the longitudinal center of the crane, and adjust the position of the center of gravity of the crane by changing the position of the balance weight to enhance the stability of the whole machine.

3. Because the movement of the spreader does not do work in theory, the input power of the lifting drum can be reduced, and the specifications and models of the motors, reducers and other components that are matched with it can be reduced, which reduces the cost. It can be widely used in cranes such as gantry cranes, quay cranes, yard cranes, gantry cranes, and grab ship unloaders.

Description of drawings

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

FIG. 2 is a schematic diagram of the winding of the lifting wire rope 5 and the balance wire rope 9 in FIG. 1 .

Among the figure, spreader 1, hoisting wire rope 2, boom pulley 3, hoisting reel 4, balance wire rope 5, balance arm pulley 6, self-aligning pulley block 7, balance weight 8, crane 9.

Detailed ways

Below in conjunction with accompanying drawing description and specific embodiment, the utility model is described in further detail:

Referring to Fig. 1, Fig. 2, the balanced type energy-saving crane of the present utility model, the hoisting wire rope 2 is arranged on the hoisting gear 1 on one side of the boom of the crane 9 through the boom pulley 3 and is wound on the hoisting drum 4, so that The lifting reel 4 is also wound with a balance wire rope 5 opposite to the direction of the hoisting wire rope 2, and the other end of the balance wire rope 5 is connected with the balance counterweight 8 on one side of the balance arm of the crane 9. The setting of the magnification of the self-aligning movable pulley block 7 and the weight of the balance weight 8 makes the force of the hoisting wire rope 2 to the torque of the hoisting drum 4 and the force of the balance wire rope 5 to lift when there is only a sling. The torque of drum 4 is equal. Hoisting reel 4 does not do work in theory like this, and power consumption is minimum.

For a crane with a balance arm, preferably the balance steel rope 5 is connected with the balance counterweight 8 through the balance arm pulley 6 and the self-aligning pulley block 7 arranged on one side of the balance arm of the crane 9 . The distance from the balance weight 8 to the longitudinal center of the crane 9 is adjusted by adjusting the centering pulley block 7, and the position change of the balance weight 8 can be used to adjust the center of gravity of the crane to coincide with its centroid, so as to enhance the overall stability of the crane.

According to the stress situation, the diameters of the lifting wire rope 2 and the balance wire rope 5 can be different according to the stress size, and can be different according to the specifications. Generally, the balance wire rope 5 is thinner, and the lifting wire rope 2 is thicker. Corresponding to the stress of the wire rope, rope grooves can be made on the hoisting drum 4 and the hoisting wire rope 2 and the balance wire rope 5 can be wound around.

For the convenience of manufacture, a steel wire rope can also be used as the lifting steel wire rope 2 and the balance steel wire rope 5, that is, the lifting steel wire rope 2 and the balance steel wire rope 5 are connected end to end and wound on the lifting drum 4, and one end thereof is connected to the sling 1 , and the other end is connected with the balance weight 8. Also only need to make a kind of rope groove on hoisting drum 4 like this, winds and connects a wire rope. The hoisting drum 4 is provided with a rope fixing device corresponding to the end-to-end connection part of the hoisting wire rope 2 and the balance wire rope 5 . To prevent the steel rope from slipping on the hoisting drum 4. In a word, no matter how the hoisting wire rope 2 and the balance wire rope 5 are arranged, it should be ensured that the torque generated by the balance wire rope 5 on the lifting drum 4 is equal to the torque generated when the hoisting wire rope 2 only bears the weight of the spreader 1 .

During work, the hoisting drum 4 on the crane 9 rotates, so that the spreader 1 on the side of the boom rises or falls, and at the same time, the balance counterweight 8 on the side of the balance arm then descends or falls with the rotation of the hoisting drum 4 . Rising, due to the weight of the balance weight 8 and the weight of the suspender 1, the torque generated by the balance wire rope 5 and the hoisting wire rope 2 to the hoisting drum 4 is equal, and the hoisting drum 4 does not do work in theory. When the spreader 1 is loaded, only the load does work. And reasonably setting the position of self-aligning pulley block 7, then can guarantee the stability of crane 9 center of gravity.

Claims (5)

1. A balanced energy-saving crane, the hoisting wire rope (2) is wound on the hoisting drum (4) via the boom pulley (3) on the spreader (1) on the boom side of the crane (9), It is characterized in that a balance steel wire rope (5) is wound on the lifting drum (4) opposite to the direction of the lifting steel wire rope (2), and the other end of the balance steel rope (5) is balanced with the crane (9). The balance counterweight (8) on one side of the arm is connected. 2. The balanced energy-saving crane according to claim 1, characterized in that: the balance wire rope (5) passes through the balance arm pulley (4) and the self-aligning pulley block (7) arranged on one side of the balance arm of the crane (9). Connect with the balance weight (8). 3. The balanced energy-saving crane according to claim 1 or 2, characterized in that: the torque generated by the balance wire rope (5) on the lifting drum (4) is equal to that of the hoisting wire rope (2). (1) Torque generated by weight. 4. The balanced energy-saving crane according to claim 1, characterized in that: the hoisting wire rope (2) and the balance wire rope (5) are connected end-to-end to the hoisting drum (4), and one end is connected to The sling (1), the other end is connected with the balance counterweight (8). 5. The balanced energy-saving crane according to claim 4, characterized in that: the lifting drum (4) is provided with a rope fixing device at the end-to-end connection part corresponding to the lifting wire rope (2) and the balance wire rope (5) .

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