JPS6162605A - Horizontally arranged hydraulic type cylinder device - Google Patents

Abstract

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

Description

[Detailed description of the invention] Industrial applications The present invention relates to a horizontally arranged coercive cylinder device.

In conventional conventional gripping cranes with a plurality of gripping parts which are opened and closed by power, such as for example broom conveyor lanes, each gripping part has two gripping legs consisting of two-armed levers, and the upper lever It is known that a hydraulic cylinder for opening and closing the grip portion is arranged between the arms. Each hydraulic cylinder consists of a cylinder casing supported on one of the gripping legs and a piston-piston rod unit. The head of the piston rod is mounted on another gripping leg.

In gripping cranes with a large difference between the maximum and minimum gripping widths, the cylinder casing is mounted near the inner end in a corresponding recess of the assigned GG crane. The disadvantage of this structure, which is effective in itself, is that the free space for movement required next to the grasper is relatively large. This is because the entire stroke is on the side of the cylinder casing (, 'left-right symmetry 7, 19, 7, 8, 9'), and when no load is applied to the gripping leg, the weight is concentrated on one side. It tends to tilt on the cylinder side due to the fact that it is Such tiltability is often eliminated by expensive and complex mechanical synchronization linkages.

Problem to be Solved by the Invention The problem to be solved by the present invention is to improve the hydraulic cylinder of the type mentioned at the beginning by allowing a relatively small amount of free movement space and by improving the distribution of weight during stroke motion. The goal is to make the structure as symmetrical as possible.

Means for Solving the Problems The structure of the present invention that solves the above-mentioned problems consists of: (a) two-armed grips that are arranged symmetrically with respect to a vertical longitudinal center plane and that move symmetrically in their strokes; It has a structurally divided cylinder casing supported approximately in the middle of the upper arm of the leg, and a vertical cylinder located at the end of the piston rod P which is immovable relative to the support. It has a common piston/piston rod unit that is vertically symmetrical and has two disk pistons that are symmetrical about a longitudinal center plane.

Effects of the Invention A particular advantage obtained by the arrangement according to the invention is that the free space a required for the movement is reduced due to the symmetrical distribution of the strokes in both moving parts. .

Furthermore, in this case, by giving the cylinder casing a more effective shape and pivoting the cylinder casing, the free space a required for movement can be made even smaller. In addition, all components are symmetrically constructed, resulting in high efficiency and weight compensation.

This also applies to moving components such as gripping legs and the like. These gripping legs etc. can be constructed completely identically, since only the cylinders are evenly suspended.

Embodiment 1.2 designates two horizontally arranged identical cylinder housings of a hydraulic cylinder arrangement. these cylinders.

The casings 1, 2 have a central horizontal pin 3 or similar suspension and support mechanism. For use in gripping cranes, the cylinder casings 1, 2 are attached to one of the two arm-shaped legs of the gripper by way of these horizontal bins 3 or similar suspension and support mechanisms. in the corresponding cutout of the upper arm. Inside the lined cylinder casings 1.2 &-! Disc pistons 5 and 6 are arranged, and the disc piston 5
, 6 are connected via a common horizontal piston rod 7.

The cylinder casings 1 and 2 are arranged symmetrically with respect to a vertical central plane ZK. The piston-piston rod units (5', 6.7) are arranged symmetrically with respect to the longitudinal solid axis of these piston-piston rod units and symmetrically with respect to the vertical longitudinal central plane 2. . The piston rod P7 is inserted from the cylinder casing in the center, ie in the central rod area (
It has a high-pressure pressure medium (or for closing the grip) and a connection for insertion into the cylinder casing (or for opening the grip). The pressure medium is guided between the corresponding cylinder chamber and the connection by holes 8, 9, formed in the piston clog 12 and in the disk pistons 5, 6.
10 and 11.

High pressure - the connection is connected to a pressure medium source (not shown) via a pressure medium line 12 to which a releasable check valve 13 is connected.
It is connected to the. In order to release the shutoff of this check valve 13, a control conduit 14 branching from the low pressure working conduit 15 is used.
is provided. Synchronization of both cylinders takes place via two flow regulating valves in the form of (adjustable) throttle valves 16. The two throttle valves 16 are connected in parallel and are arranged in the connecting lines 17a, 17b between the low-pressure working line 15 and the low-pressure connection.

When closing the grip, high-pressure pressure medium is conveyed via pressure medium conduit 12 and bores 8, 9 to the outer chamber of the cylinder (furthest from the piston rond) and from the inner pressure chamber to bore 10. Pressure medium is discharged via 11, throttle valve 16 and low-pressure working line 15. When opening the grip, a low-pressure working conduit 15, a throttle valve 16 and a hole 10.11 are connected to the inner pressure chamber.
Pressure medium is supplied via. This pressure medium can flow out of the outer pressure chamber via the hole 8.9 and the unblocked check valve 13. The guide pin 19 in the center of the cross beam (cross beam) is guided without being subjected to force by the guide pin 19, that is to say that the guide pin 19 engages in a corresponding recess in the yoke 18.

A yoke 18, which rests on the gripping beam, supports in a known manner a pin 3 which forms the pivot axis of the horizontal gripping part. (In accordance with the fact that a gripping beam has several gripping parts, all gripping parts each have a piston-cylinder arrangement).

The piston-cylinder device according to the present invention can be used when there are components that are to be moved symmetrically in the stroke, especially when moving bulkheads and unloading docks in shipbuilding, as well as crossbars that have gripping parts that open and close by power. It can be used anywhere.

Embodiments In order to obtain synchronicity of both cylinders, the cylinder's
Two throttle valves or similar flow adjustment mechanisms arranged parallel to each other are incorporated in the conduits which supply or discharge pressure medium at low pressure into pressure medium chambers of equal volume. This configuration allows synchronization to be achieved in a simple manner by omitting expensive and complex mechanical synchronization linkages.

In a further advantageous embodiment of the invention, the central part of the piston rod has a pressure medium connection, and a conduit connects the outer cylinder chamber and the inner cylinder chamber to the pressure medium connection. It is in the form of a passage extending into the piston rond and the disc rond. These pressure medium connections are protectively arranged in the central Roso P area. This provides high safety. The required mobility of the supply conduit is reduced to a relatively short distance.・

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a hydraulic cylinder according to the present invention, and FIG. 2 is a front view of the hydraulic cylinder according to the present invention.

Claims (3)

[Claims] 1. In a horizontally arranged hydraulic cylinder device, a) the upper arm of the two-armed gripping leg is arranged symmetrically with respect to the vertical midplane (Z) and attempts to move symmetrically in its stroke; It has a structurally divided cylinder casing (1, 2) that is supported approximately at the center of the piston rod (7), which is immovable relative to the supporting part (b).
) has a common longitudinally symmetrical piston-piston rod unit with two disc pistons (5, 6) symmetrical about the vertical longitudinal midplane A horizontally arranged hydraulic cylinder device. 2. The conduits (17a, 17b) for supplying or discharging low-pressure pressure medium to pressure medium chambers of equal volume of the cylinder incorporate two throttle valves (16) or similar flow regulating mechanisms arranged in parallel; A hydraulic cylinder device according to claim 1. 3. The central part of the piston rod has a pressure medium connection, and the conduits connecting the outer cylinder chamber and the inner cylinder chamber to the pressure medium connection are arranged in channels (8, 9, 10,
2. Hydraulic cylinder arrangement according to claim 1, in which the piston rod (7) and the disc piston (5, 6) extend in the form of a piston rod (7) and a disc piston (5, 6).