Drive device for lifting on leg


B66F1/02 - with locking elements, e.g. washers, co-operating with posts

 

(57) Abstract:

Usage: actuation device for lifting loads. The inventive drive contains pivotally connected with the lower 5 and upper 6 captures, moving along the support 9 moving links 4. The actuator has a crankshaft 1 with two knees, with necks of each of which is pivotally connected to the rods 2, pivotally connected with the slide 3. Sliders 3 are connected each via a hinge with the corresponding rolling element 4. 1 Il.

The invention relates to lifting equipment, namely, the design of the drive device for lifting on the support.

Known drive device for lifting on a support having upper and lower moving along the support grips, containing the hinge associated with each respective one of the mentioned grippers movable parts.

Known actuator is made in the form of a hydraulic cylinder, the disadvantage of this drive is the need to equip its the water pump, distributor, etc. that adds cost and complexity to it.

The aim of the invention is to simplify the design.

This goal is achieved due to the fact that the actuator is equipped with two side corresponding to the knee of the crankshaft, and the other with the corresponding slide, and each slide pivotally connected with the free end of the respective rolling element.

The invention is illustrated in the drawing, which shows a General view of the drive.

The drive contains the crankshaft 1, the connecting rods 2, the sliders 3 and 4 links, pivotally connected with the lower 5 and upper 6 seizures.

The drive works as follows.

Torque from the engine 7 through the reduction gear 8 is transmitted to the crankshaft 1, which by means of the crank mechanism consisting of a connecting rod 2 and slider 3 is convergence, divergence links 4. When approaching links 4 climbs up the pole 9 of the lower grip 5, different links of the 4 climbs up the pole 9, the upper grip 6.

To balance the overturning moment resulting from the weight of the actuator, the actuator are mounted rollers 10 and 11, which interacts with the support 9 when you move the drive.

The roller 10 is mounted in the lower part of the drive closest to the drive side of the support 9, and the roller 11 in the upper part of the actuator on the opposite side relative to the support 9.

The use of the invention will simplify design is RE, having upper and lower moving along the support grips, containing the hinge associated with each respective one of the mentioned grippers movable parts, characterized in that the actuator is equipped with two tribes crankshaft, two sliders and two connecting rods each of which one end pivotally connected with the neck of the corresponding knee of the crankshaft, and the other with the corresponding slide, and each slide pivotally connected with the free end of the respective rolling element.

 

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