JPS6349561A - Conveyor for lifting and conveying heavy load - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveying device for lifting and transporting heavy loads, in particular from belt stations of large conveyor installations and from movable or lashing installations, and especially for traveling devices, in particular double track tracks. It consists of a running gear and a lifting platform, which is supported by a plurality of lifting cylinders mounted freely movably on both sides, and a guiding connection serving as a guide for the lifting platform. supported by rods,
The invention relates to a type in which the guide connecting rods are each connected in a freely movable manner at one end to a lifting platform and at the other end to a traveling device.

German Patent Application No. 29 26 028 describes a conveying device of the above type, in which a double tracked carriage is connected to a platform via four lifting cylinders. . At least six of the four lifting cylinders are connected so as to be freely movable on both sides, on the one hand to the double tracked carriage and on the other hand to the platform.

Furthermore, in the known design mentioned above, at least six control support legs of variable length are arranged in the area between the lifting plant form and the running gear support, which control support legs can be moved freely. Via a bearing base or a joint, on the one hand to the running gear support and on the other hand at least two of the lifting support legs.
are combined. The axes of action projected onto the horizontal plane do not have a common point of intersection. According to the German Patent Application No. 1, it is stated that the control support leg can be movably connected on the one hand to the running gear support and on the other hand to the lifting platform. However, this type of construction requires an expensive control device for the variable-length control support leg. This is because these control support legs must be extended and retracted in proportion to the extension and retraction of the lifting support legs.

German Patent No. 2 416 642 also describes a device for conveying loads, which however has four immovably arranged lifting cylinders, in this case a lifting plant. The form is pivotably guided relative to the carriage support via a pin-shaped centering element about an axis arranged in an imaginary prism formed by the four lifting cylinders.

This centering element is vertically movable and fixable relative to a cylinder inserted into the carriage support. The lifting platform is lockable on the one hand to the load and on the other hand is connected to the centering element via a swivel. This joint allows upward force transmission from the platform to the centering member.

The present invention is based on the prior art described at the beginning, and an object of the present invention is to provide a conveying device that is extremely simple in structure and operation. This problem is solved by the measures of the invention having the features of patent claim 1. Advantageous embodiments are described in the following claims.

The effect of the present invention is that to support the platform,
The point is that, in addition to the at least three freely movable lifting cylinders, only rigid guide connecting rods of constant length are used. The hydraulic device for the lifting cylinder can be designed exclusively for operating the lifting cylinder and does not have to be designed for operating further devices as well. This greatly simplifies the control of the hydraulic device and facilitates its operation.

The invention will now be explained with reference to the illustrated embodiment.

According to the embodiment shown, the conveying device has a double track carriage 1 with tracks on both sides, the two tracks 2 of which are rigidly connected to a carriage frame 3 or connected thereto. As is known per se, it is connected to the carriage frame 3 via a rocking mechanism.

In the four corners 4, 5, 6, 7 there are four double-acting lifting cylinders 8, 9, 10 in bearings not shown in detail.
．． 11 are supported.

A lifting platform 12 is further connected to the upper end of the piston rod of these double-acting lifting cylinders via a bearing which is known per se.

Furthermore, the traveling frame 3 has four guide connecting rods 13.
14, 15, 16 are supported at one end, and these connecting rods are located in the illustrated embodiment in a plane containing the imaginary side wall or end wall of the carriage. Connecting rod 1
The other ends of 3.14° 15.16 are also supported on the lifting platform 12 via bearings.

In the illustrated embodiment, a conical pin 17 is also provided, which is arranged in the lifting plant form 12 so that it can be lowered by a hydraulic cylinder 18.

In the exemplary embodiment shown, the hydraulic medium lines of the four hydraulic cylinders can each be individually shut off, so that the carrier cylinders can each be locked independently at a predetermined travel distance.

In addition, the lifting cylinder is connected in a manner known per se to a hydraulic device, which is not shown in the drawing for reasons of clarity.

FIG. 2 schematically shows the lower part of the device 19 to be moved, which has a hole corresponding to the pin 17.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of an embodiment of the conveying device of the present invention, and FIG.
FIG.

Claims (1)

[Claims] 1. A transport device for lifting and transporting heavy loads, which is composed of a traveling device and a lifting platform,
The lifting platform is supported by a plurality of lifting cylinders which are freely movably supported on both sides and by guide connecting rods which serve as guides for the lifting platform. Guide connecting rods (13, 14, 15, 16), each of the type being movably connected at one end to the lifting platform and at the other end to the running gear; A conveying device for lifting and conveying heavy loads, characterized in that the length of the conveyor remains unchanged. 2. 4 lifting cylinders (8, 9, 10, 11) and 4
2. Conveying device according to claim 1, characterized in that two guiding connecting rods (13, 14, 1516) are arranged. 3. The conveying device according to claim 2, wherein the lifting cylinders (8, 9, 10, 11) are double-acting cylinders. 4. Conveying device according to claim 3, wherein the lifting platform (12) has a conical pin (17) corresponding to the bore of the device (19) to be moved. 5. The conical pin (17) is connected to the lifting platform (1
4. The conveying device according to claim 4, wherein the conveying device is arranged so as to be able to be lowered into the interior of the vehicle. 6. The conveying device according to claim 5, wherein the cylinder chambers of all the lifting cylinders (8, 9, 10, 11) can be individually shut off. 7. The lifting cylinders (8, 9, 10, 11) are connected to the associated pump, in each case two lifting cylinders next to each other are connected in parallel to the associated pump, and two other lifting cylinders connected individually to the associated pump form a three-point support mechanism;
A conveying device according to claim 6.