Lifting mechanism

 

(57) Abstract:

The invention relates to the field of engineering, namely, hydraulic lifting mechanisms. The lifting mechanism includes A-shaped arrow 2 telescopic section 5 in the upper part, the lower ends mounted on the platform 1 can be rotated in the transverse plane. In the cavity of the telescopic section is a two-stage telescopic double-acting hydraulic cylinder, a rod hinged to the platform, the inner housing by means of pins pivotally attached to the a-frame boom, and the outer casing through eyes made it groove and the axis of the hinge attached to the movable part of the telescopic sections can be rotated relative to the pivots of the inner body cylinder. To telescopic sections attached lifting device. The invention simplifies the design and improves reliability. 1 Il.

The invention relates to the field of engineering, namely, hydraulic lifting mechanisms, for example, container-cranes.

Known loading and unloading device of the carrier-material handler, including now on the cargo platform with the ability to swing in a transverse vertical plane and pivotally connected by means of a hydraulic cylinder, installed on the discharge side, turning in the same vertical plane remote support, one end of which is pivotally mounted on the cargo platform, and a device for fixation of the arrow, and the arrow made curved so that its telescopic part in position lowering the container onto the platform perpendicular to the latter, and the point of hinged attachment of the boom to the cargo platform is displaced relative to the longitudinal axis of symmetry in the direction opposite to the discharge side, while the gripper is fixed directly to the end of the telescopic part (see and.with. N 1238991, publ. 23.06.86, BI N 23).

The disadvantage of this handling device is the inability unloading on both sides along the platform of the container.

Known vehicle for transportation of containers, comprising a platform for transporting a container, the edges of which are driven by hydraulic cylinders lifting mechanisms, including mounted on the bases of the lifting boom and outriggers, each lifting boom made the a-frame, provided with trunnions mounted on the lower ends of the shafts in the walls kooga clamps with a tapered fingers to interact with the axles, each latch includes a housing, inside screw with right and left threads, in the centre of which is mounted a gear wheel, gear with drive rail (see and. C. N 1184711, publ. 15.10.85 in BI N 38).

The disadvantages of this vehicle is the limited operational capabilities during loading and unloading operations due to the lack of the possibility to manipulate lifting device horizontally to reduce the tolerance on the accuracy of the entrance to the container during loading and improve the positioning accuracy during unloading.

These shortcomings devoid vehicle for transportation and mechanized loading, unloading intermodal containers containing the frame and the platform, the edges of which are lifting mechanisms each of which includes a base, a-frame boom and outriggers. Each of the lower ends of the a-frame boom is made in the form of a semicylinder with a cutout for the support roller mounted on the bracket mounted on the frame of the vehicle can be rotated around a horizontal axis. The bracket is connected with the rod of the power cylinder, hinged at the base, ustanovki, and can be made with the guide for the fixing roller mounted on the base. Turn A-shaped arrows to the right or left is on the mechanisms of fixing them to the base using a piston double-acting hydraulic cylinder, is pivotally supported by the lugs at the base and the a-frame bolt on its axis of symmetry, and the lifting and lowering of cargo carried telescopic section and attached lifting device that is built into the upper part of the a-frame boom, (see and.with. N 1502415 on request N 4231722/11, CL 60 1/48 P - prototype).

To the disadvantage of the lifting mechanism of the vehicle is the considerable complexity of the hydraulic actuator due to the presence of four Executive cylinders to rotate the boom and extension of the telescopic sections and lack of reliability of the drive because again, a large number of execution units.

The basis of the invention is the construction of the lifting mechanism in which rotation of the frame and lifting are one hydraulic cylinder having a special mount, thereby simplifying the design while improving the reliability of containing a series of A-shaped boom telescopic section in the upper part, the lower ends mounted on the platform can be rotated in the transverse plane, and the cylinder and lifting device attached to the telescopic sections, according to the invention the cylinder is made of a two-stage telescopic double-acting and is located in the cavity of the telescopic sections so that his rod is hinged to the platform, the inner housing by means of pins pivotally attached to A support shaft, and the outer shell of the cylinder, through eyes made it groove and the axis of the hinge attached to the movable part of the telescopic sections can be rotated relative to the pivots of the inner body cylinder.

The location in the cavity of the telescopic section of the two-stage telescopic hydraulic cylinder double-acting can be used for operations of lifting and rotation of the frame, which allows to reduce the number of Executive cylinders and thereby to simplify the design of the lifting mechanism as a whole and improve its reliability.

The fixing of the outer housing cylinder to the movable part of the lifting telescopic section allows you to manage Nezavisimoye, as well as independent control of the cavities of the hydraulic cylinder allows rotation A-shaped arrows, without the movable part of the telescopic section.

The design of the lifting mechanism shown in the drawing in longitudinal section.

The lifting mechanism has mounted on the platform 1 And is shaped arrow 2 through the mechanisms of fixation 3 and 4. In the upper part of the A-shaped arm 2 attached lifting the telescoping section 5 of the closed hollow cross-section, the movable part 6 which is attached lifting device 7, and its cavity is a two-stage telescopic double-acting hydraulic cylinder 8, the outer casing 9 which by means of lugs 10 with the groove 11 and the axis of the hinge 12 is attached to the movable part 6 lifting the telescopic boom 5, the inner case 13 by means of pins 14 pivotally attached to A support shaft, and the rod 15 pivotally mounted on the platform 1 of the lifting mechanism, and the cavity 16, 17 and 18 of the cylinder is communicated with the hydraulic system.

The lifting mechanism operates as follows. Before unloading the container, for example on the right side on the drawing, produce off mechanism is of the hydraulic cylinder 8, the cavity 17 of the hydraulic cylinder 8 is connected with a drain line, the cavity 18 of the hydraulic cylinder 8 is ending with regulation of a hydraulic device, such as a valve (the drawing is not specified). Thus, the working fluid will move the outer casing 9 of the cylinder 8 and its associated movable portion 6 of the lifting telescopic section 5 with lifting device 7 and the container up the drawing.

Upon reaching the required height of lift produce the switching valve so that the cavity 17 of the hydraulic cylinder 8 is locked, the cavity 18 is connected to the drain and into the cavity 16 is supplied working fluid. While the outer casing 9 and the inner case 13 of the hydraulic cylinder 8, moving together between a lead in the movement and attached to the body 13 by means of pins 14 A-shaped arrow 2, which is being fixed hinge mechanism 4 will be rotated about the axis of the mechanism. After full extension of the piston rod 15 of the hydraulic cylinder 8 valve switch so that the cavity 18 of the hydraulic cylinder 8 is locked, the cavity 16 is communicated with the drain line and into the cavity 17 is supplied working fluid, which results in digepesca section 5 to the contact of the latter with A-shaped arrow 2 or contact paged container with soil. When the eye 10 with the groove 11 and the axle 12 provide the necessary degree of freedom of the mechanism and the possibility of forced movement or fixation on a given departure of the movable part 6 lifting the telescopic boom 5.

The process of loading the container from the ground onto the platform 1 is in the reverse sequence.

The technical result from implementation of the proposed lifting mechanism is to simplify the design and increase its reliability through the use of as one hydraulic telescopic cylinder, perform the function of lifting and rotation of the A-shaped arrows.

Lifting mechanism containing a-frame boom telescopic section in the upper part, the lower ends mounted on the platform can be rotated in the transverse plane, and the cylinder and lifting device attached to the telescopic section, characterized in that the cylinder is made of a two-stage telescopic double-acting and is located in the cavity of the telescopic sections so that his rod is hinged to the platform, the inner housing by means of hinge pins attached to And image of the Sol to the movable part of the telescopic sections can be rotated relative to the pivots of the inner body cylinder.

 

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