JPH09174381A - Wear plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily a detect wearing condition by providing each corresponding slide plate continuously sliding with an element displaying the condition of wear. SOLUTION: A slide plate 1 has a replaceable wear plate 1, 1. The plate 1.1 slides on a member formed as a wear plate 2.1 of a guide way 2 of a scrap cutter. When the plate 1.1 is turned into a specified wear condition, a contact is interrupted and a signal transmittable to urge the replacement of the worn member 1.1 is generated. On the side of the guide way 2 an embedded element 3 displays the specidied worn condition of the wear plate 2.1 so that it can be viewed from the above, and thereby the replacement of the member can be facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wear plate for scrap, bulky refuse or waste treatment equipment and / or machines, such as scrap cutters and scrap presses, and more particularly to scrap cutter slide plates and guideways. Regarding the corresponding wear plate.

[0002]

BACKGROUND OF THE INVENTION General technical measures are known for detecting and assessing wear conditions in operating systems in machine diagnostics or equipment diagnostics.

In the field of automotive engineering, European Patent Publication No. E
It is known from P-A-0411284 that when the residual pad is reached, the wear state of the brake pad is electrically detected and displayed by the contact element. It is also known from West German patent publication DE-A-2655657 to incorporate colored inserts into the friction material for calipers of disc brakes in order to visually detect the wear state. Further, in various areas of the art, it is known to use infrared or ultrasonic systems to define wall thickness measurements.

[0004]

In scrap, bulk refuse or waste treatment facilities or machines, wear of wear plates or wear metal plates that are replaceably embedded to protect the basic structure and / or transmission mechanical elements. Making the conditions identifiable and replacing them early poses a particularly important problem. As a general rule, the wear state of these components is often not recognized early by the operator of the installation or machine, or the wear condition is only recognized by removing the preceding component and depending on the mounting position of each wear component. It was

For example, in the scrap cutter, the wear state of the wear plate attached to the slide plate assembly is recognized too late, which may cause a serious failure in the basic structure and further in the hydraulic system. because,
This is because the sliding support required for the moving parts of the machine is not guaranteed by the increased wear. Then, the load of the mechanical part is transmitted to the piston of the hydraulic cylinder,
The piston rod bends or breaks. At least the hydraulic cylinders wear significantly.

The object of the present invention is to detect, by means of technically simple means, the wear state of a member of the kind mentioned at the outset,
This ensures or enhances the operating performance or operability of the corresponding equipment or machinery.

[0007]

In order to solve the above-mentioned problems, the present invention comprises: a) a corresponding wear plate, such as continuously sliding, having at least one element for indicating a wear state, b) These wear plates have elements embedded in the non-wearing back side of the wear plates, of which the material is at least as hard as the material of the wear plates, and c) the predetermined maximum permissible wear of the wear plates. The condition is used as a measure for the embedding depth of said element, which measure at the same time of the residual material remaining on the wear plate in order to achieve a sufficient support of the position and movement of the machine parts not directly connected to the wear plate. There is a setpoint for the thickness, and d) at least a visual perceptible when the setpoint for the remaining residual material thickness of the wear plate is reached.

Other features or variants of the invention are described in claims 2 to 10.

[0009]

1 is a detailed view of a cross-section of a wear member attached to a scrap cutter not described in detail in FIG.
1 and 2 are shown. The slide plate 1 performs the stroke movement indicated by the arrow. The slide plate 1 has a replaceable wear plate 1.1 as a member. The wear plate 1.1 slides on the guideway 2 of the scrap cutter, also on a member also formed as wear plate 2.1.

As shown in detail X1 there is provided an element 3 for indicating the state of wear. Of these elements, the element 3 embedded in the wear plate 1.1 forms a conductor loop through which a weak current flows as a contact system. The elements 3 located in the wear plate 2.1 are embedded in the holes in the surface of the wear plate 2.1 which are not exposed to wear and have a visually perceptible signal color. With respect to detail X2, when the wear plate 1.1 reaches a predetermined wear state, the interruption of the contacts produces a transmissible signal prompting the replacement of the worn member 1.1. On the side of the guideway 2, the element 3 embedded according to the detail view X1 provides a visually perceptible "from above" predetermined wear state of the wear plate 2.1, by means of which the replacement of this member is possible. Is prompted. The latter element 3, which can for example be constructed as a signal-colored plastic plug, is preferably glued or cast into the remaining non-wearing residual material of the wear plate 2.1 by means of holes.

Said element 3 comprises wear plates 1.1, 2.
Made of a material whose hardness is at most equal to that of material No. 1,
Each of these wear plates is embedded from the non-wearing back side. In this case, the wear plate 1.1,
The predetermined maximum permissible wear condition of 2.1 is used as a measure for the embedding depth of the element. At the same time, this measure is based on the remaining material thickness of the wear plates 1.1, 2.1 in order to ensure the position and movement of the machine parts which are not directly connected to the wear plates 1.1, 2.1. It is a target value.

With this construction, damage to the basic structure and also to the hydraulic system is avoided, so that the above-mentioned problems with the scrap cutter are solved. This is because the necessary sliding support of the moving machine parts is ensured and there is no risk of excessive wear.

In addition, horizontally acting drive units, for example hydraulic cylinders with pistons and piston rods, are largely spared from mechanical part loads which are caused by wear and cause bending stresses. By doing so, the wear plates 1.1, 2.1 of the present invention provide a reliable method for driving scrap cutters, for example.

As shown in simplified form in FIG. 2, the basic idea of the invention is applied for the infrared device 4 to detect a predetermined wear state in a wear member comparable to the wear plate 1.1. It In this case, the element 1.1 also serves as an element 3 or a sensor not required here.

By means of the combination as shown diagrammatically in FIG. 3, the element 3 according to the invention is applied to the parts of the installation 1 / machine which have been exposed to wear, for example the wear plates 1.1, 2.1. The mounting of functional sensors may provide an efficient diagnostic system for increasing the uptime of the installation or machine for the applications mentioned at the outset. The wear state is displayed on the display device 6 by the evaluation device 5 that uses a computer.
Can be displayed in analog or digital form and can be monitored by the remote inquiry module 7. This device makes it possible to constantly detect the respective wear state, and by means of a sensor which continuously produces a signal, a warning is reached that the predetermined wear rate has been reached. In this case, the signal can be transmitted by wire or wirelessly.

[Brief description of the drawings]

FIG. 1 is a partial view of an embodiment of a corresponding wear member mounted on a slide plate of a scrap cutter.

FIG. 2 is an explanatory diagram of a configuration of the present invention in which a wear state is detected by an infrared device.

FIG. 3 is a schematic diagram of another embodiment of a diagnostic system.

[Explanation of Codes] 1 ... Slide plate 1.1 ... Replaceable wear plate of slide plate 2 ... Guide way 2.1 ... Replaceable wear plate of guideway 3 ... Display element 4 ... Infrared device 5 ... Evaluation device 6 ... Display device 7 ... Remote inquiry module

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Manfred Adolf 40764 Langenfeld, Sep-Helberger-Strasse 34

Claims (10)

[Claims] 1. A scrap plate, a bulk refuse or waste disposal facility and / or machine, for example a wear plate for a scrap cutter or a scrap press, wherein: a) each corresponding slide plate such as continuously sliding; 1, 2.1) has one or more elements (3) indicating the wear state, b) the slide plate (1.1, 2.1) has a slide plate (1.1, 2.1) An element (3) made of a material whose hardness is at most equal to that of the material of (1) is embedded in the non-wearing back side of the slide plate (1.1, 2.1), and c) the slide plate (1.1). , 2.1) is used as a measure for the embedding depth of the element (3), which measure at the same time the remaining balance of the slide plate (1.1, 2.1). A target value for the thickness of the extra material is made to achieve a sufficient support of the position and movement of the machine parts not directly connected to the slide plate (1.1, 2.1), d) the slide plate (1. 1. A wear plate which is at least optically perceptible when the target thickness of the remaining material of 1, 2.1) is reached. 2. The element (3) is embodied as a plug in a hole of the slide plate (1.1, 2.1) which is not exposed to wear. 1
Wear plate according to. 3. The element (3) is characterized in that it has a discernible optically perceptible signal color compared to the material of the slide plate (1.1, 2.1). The wear plate according to 1 or 2. 4. Wear plate according to claim 1 or 2, characterized in that the element (3) is made of plastic. 5. Wear according to claim 1 or 2, characterized in that the element (3) has conductive loops as an electrical contact system that produces a transmissible signal when the contacts are interrupted by wear. plate. 6. A slide plate (1.1) having a lower sliding surface in the installed position, wherein said element (3) has a conductive loop and the sliding plate (2.1) having an upper flat sliding surface in the installed position. ), The element (3) has an optically perceptible signal color.
The wear plate according to 2, 3, or 5. 7. The functioning of the moving parts of the machine is characterized in that a horizontally acting drive unit, for example a hydraulic cylinder and a piston and a piston rod, receives little bending load due to the load of the machine part. ,
The wear plate according to claim 1. 8. A wear plate, characterized in that in a slide plate for a scrap, coarse dust or waste disposal installation and / or machine, a light beam is used to detect a wear condition. 9. Wear plate according to claim 8, characterized in that an infrared device and / or an ultrasonic device is used. 10. Slide plates (1.1, 2.1)
10. An evaluation device (5), a display device (6) and / or a remote inquiry module (7) connected to the evaluation device (5), the combination forming a diagnostic system. Wear plate according to.