KR20110020274A

KR20110020274A - Device for outputting a lubricant

Info

Publication number: KR20110020274A
Application number: KR1020107028928A
Authority: KR
Inventors: 미카엘 프르지빌스키
Original assignee: 아크티에볼라겟 에스케이에프
Priority date: 2008-05-26
Filing date: 2009-05-19
Publication date: 2011-03-02
Also published as: WO2009143975A1; CN102099613A; DE102008025055A1; CN102099613B; KR101626171B1; DE102008025055B4

Abstract

A source volume for lubricating oil, comprising at least one metering element, the lubricating oil flowing out of the metering volume by the movement of the metering element, and a sensor for monitoring the filling height of the source volume and / or the motion of the metering element An apparatus for discharging lubricating oil is disclosed which includes a sensor for monitoring a sensor and comprises a common housing portion and / or a common printed circuit board configured for both sensors.

Description

DEVICE FOR OUTPUTTING A LUBRICANT}

The present invention relates to an apparatus for discharging lubricating oil.

A series of various devices for lubrication are disclosed in the prior art, in which the conveying element automatically transfers grease or oil from the central supply vessel to the friction positions and mechanical elements via conduits. .

It is an object of the present invention to provide an apparatus for discharging lubricating oil in which the monitoring function is integrally formed by a simple and compact manufacturing method.

This object is achieved by the subject matter of claim 1. Advantageous embodiments are described in the dependent claims.

According to claim 1, wherein the device for discharging lubricant

-Source volume for lubricating oil,

-Containing at least one metering element, by which the lubricant flows out of the metering volume,

A sensor for monitoring the filling height of the source volume and / or a sensor for monitoring the movement of the metering element,

A common housing part and / or a common printed circuit board configured for both sensors.

According to the device of claim 1, it is advantageous, for example, to monitor the filling state of the grease cartridge and / or the stroke movement of the metering piston. Thus, for example, in the configuration, the sensors are configured as self-acting switches in connection with the rest of the devices, so that when the negative monitoring results, the switches are opened and connected in series, monitoring both components simultaneously. This is advantageous because only a simple output of the control device connected to the device and capable of memory programming is required. In addition, when short-circuit is established according to the closed-circuit principle, the short circuit is advantageously monitored at the same time.

It is particularly advantageous for the device to be fully connected on a memory programmable control device with only three cables with a connector plug inserted, two of which are connected to the supply voltage phase and ground. A third cable is used to test the switch in series and connected in series.

According to an advantageous embodiment, it is particularly advantageous that a configuration in which both sensors are arranged on a common printed circuit board and / or a common housing part, and a cost-saving configuration is realized. The device is in particular modular and the components of the monitoring function, including the sensors, the printed circuit boards and the plugs of the sensors, are applied without problems in the design of the basic device and the size of the parts is not enlarged. Compact size is maintained.

Further advantages, features and details of the invention will become apparent from the following detailed description of the invention with reference to the drawings.

1 is a longitudinal sectional view of an apparatus for discharging lubricating oil, in particular grease, as an embodiment of the invention;

The apparatus of the present invention comprises a plurality of cylindrical metering volumes 12 for discharging a metered amount of lubricant per metering volume 12. In the circumferential direction of the cylindrical cover two to five metered volume parts 12 of this type can be arranged, in the figure an embodiment with five metered volume parts is shown. To dispense a metered amount of lubricating oil, a suitable metering piston 14 can move into each metered volume 12.

In addition, the metering piston 14 is connected to a common working piston unit 24, and the metering piston 14 is electrically metered through an expandable element 22 which is electrically heated to move inside the metering volume 12. The piston 14 can be driven or moved with respect to the return spring 26. For the expansion action in the connected state in accordance with the heating action of the expander element 22, the thermal resistance of the expander element 22 can be connected with a direct current voltage of, for example, 24 volts (V). To move the metering piston 14 into the metering volume 12 through the stroke of the work piston unit 24 such that a fully metered amount of grease is discharged into the metering volume 12. For example, a duration of 7 minutes is required.

Then, for example, a time of at least 30 minutes is followed for this type of discharge process for lubricating oil, during which time the thermal resistance is separated from the voltage and coupled in contact with the expander element 22 ( 26) and due to the cooling action of the expander element, the working piston unit 24 and the metering piston 14 return back to the discharge position and a device for a new lubricant discharge process is prepared. Thus, the switching of the DC voltage for the thermal resistance is controlled by, for example, a memory programmable controller, which is connected to the controller.

When the metering piston 14 does not move inside the metering volume 12, the metering volume 12 is connected with a source volume of lubricating oil to fill the metering volume 12 with lubricating oil. The source volume is formed by a replaceable lubricant cartridge. Thus, a plate 34 assembled on the lubricant cartridge 32 is supported by the spring 36 against the housing of the device, and the spring 36 carries lubricant from the lubricant cartridge 32 to the metered volume portion. Provided for delivery to 12, a negative pressure is generated in the metering volume 12 during the backstroke of the metering piston 14, whereby the lubricating oil is mainly supplied, in connection with the process The spring 36 is weakly supported. After the lubricating oil cartridge 32 is emptied as defined, the lubricating oil cartridge 32 under pressure is replaced with a new lubricating oil, except for a certain amount of remaining lubricating oil.

In addition, in order to monitor the filling state of the source volume and the stroke movement of the metering piston 14, the apparatus is configured as follows: in the lower or side region of the lubricating oil cartridge 32 The device for monitoring includes a magnetically actuated first reed switch 42 and a first actuating magnet 44 configured as an accessory as a permanent magnet. The plate 34, which moves when the lubricant cartridge 32 is empty, is the magnetic field of the actuating magnet 44 relative to the reed switch 42 when the lubricant cartridge 32 reaches a predetermined empty condition. By shielding the reed switch 42 while the magnetic field is shielded. For this purpose the plate 34 is configured as a circular disk, with short tubular parts connected in both axial directions at the edge of the circular disk. When the lubricating oil cartridge 32 is in the empty state, the shielding action of the magnetic field is adopted by the downward facing portion in the axial direction. As long as the lubricating oil cartridge 32 is not yet exhausted, the reed switch 42 is closed.

In addition, the device arranged in the area of the work piston unit 24 for monitoring the stroke of the metering piston 14 includes a second reed switch 52 and a work piston unit (operated by magnetic). It has a second actuating magnet 54 which is fixed to 24 and configured as a permanent magnet and which is attached. The components are arranged in engagement with the magnetic shield 56 such that when the metering piston 14 is out of the metering volume 12, the magnetic field of the actuating magnet 54 is shielded. The reed switch 52 is shielded with respect to the reed switch 52 through the part 56, and the reed switch 52 is opened in the above state. That is, as the work piston unit 24 performs the set movement as determined, the reed switch 52 is closed to the right and remains closed until the work piston unit 24 returns to the initial state.

Both reed switches 42 and 52 are arranged on a common printed circuit board 62 and connected in series. In addition, a connector plug 64 used in electrical connection with a memory programmable control device is connected to the printed circuit board 62, and the connector plug 64 has at least three contact pins 66, 67, and 68. ). The contact pin 66 is provided as a connector for the phase of the switchable DC voltage by a memory programmable controller. The contact pin 66 is electrically conductively connected to one end of both reed switches 42 and 52 switched in series and to one of both connectors of thermal resistance. A voltage ground for the connector is provided on the contact pin 67 connected with the other of the connectors of the thermal resistance. Finally, the contact pins 68 are connected to the other ends of the reed switches 42 and 52 which are switched in series, and through the contact pins 68 of the controller, which are memory programmable, the filling state of the source volume. It is advantageous to be able to simultaneously monitor the stroke movement of the and the metering piston 14. In addition, when there is sufficient lubricating oil in the source volume and the metering piston 14 operates in sequence, the reed switches 42 and 52 are closed to simultaneously provide a short circuit according to the closed-circuit principle. Is monitored. For example, the connector plug 64 is configured as a circular connector with five contact pins, only three of which are arranged to match as described above.

According to yet another embodiment, instead of the expandable element being heated, other drive means, for example an actuator, may of course be assembled. According to another embodiment, a reed switch with a cage over contact may be used instead of a reed switch with a shutter contact, and if necessary, no shield is provided and the source volume is monitored. When the actuating magnet has a ring shape and is made to move with the plate. Naturally, instead of series switching, parallel testability can be provided for both switches, thus requiring another contact pin for separate test functions. According to yet another embodiment, only one of the switches may be provided. However, for efficiency, a printed circuit board and / or a housing portion containing the plug and the switch is later provided or designed for both switches.

12 ... metering volume,
14 ... metering piston,
22 ... expansion element,
24 ... work piston unit,
26.Return spring,
32.Lubrication cartridge,
34 ...
36 ...
42 ... reed switch,
44 ... the first working magnet,

Claims

-Source volume for lubricating oil,
-Containing at least one metering element, the lubricating oil flowing out of the metering volume by the movement of the metering element,
A sensor for monitoring the filling height of the source volume and / or a sensor for monitoring the movement of the metering element,
A device for discharging lubricating oil, characterized in that it comprises a common housing part and / or a common printed circuit board configured for both sensors.

The device of claim 1, wherein the metering elements and sensors form a constituent unit and are arranged in a common housing.

Apparatus according to claim 1 or 2, characterized in that at least one of the sensors is configured as a switch, in particular actuated by an actuating magnet.

4. The switch of claim 3, wherein the switch is closed when the source volume is no longer filled or when the metering element is arranged in the off position and the source volume is still filled or when the metering element is arranged in the lubricating oil discharge position. And the switch and the operating magnet are arranged and configured as possible.

5. A device according to claim 3 or 4, characterized in that the switch is manufactured to be normally closed with at least a retractable contact or with a replaceable contact.

6. The device of claim 3, wherein the switch is a reed switch or is manufactured as a Hall sensor. 7.

The self-actuated switch and attached actuating magnets according to any one of claims 3 to 6, wherein the magnetically actuated switch with a retractable contact for monitoring the source volume is in an empty state in which a portion of the device that is moving to empty the source volume is defined. Arranged to shield the magnetic field of the operating magnets with respect to the switch when it reaches.

8. The retractable device according to any one of claims 3 to 7, wherein the magnetic field of the operating magnet is shielded against the switch when the metering element is not moving into the metering volume. A device for discharging lubricating oil, characterized in that the device is constructed and in which an attached working magnet is arranged and moves together with a magnetically operated switch and a metering element with contacts.

9. An apparatus for draining lubricant oil according to any one of claims 3 to 8, characterized in that both switches are switched in series.

9. An apparatus for draining lubricant oil according to any one of claims 3 to 8, characterized in that both switches are switched in parallel.

The device according to any one of claims 3 to 10, characterized in that said monitoring function is formed by a closed-circuit principle.

12. A lubricant according to any one of the preceding claims, characterized in that said at least one metering element is connected with a work piston unit, said work piston unit is arranged to be connected with a plurality of metering units. Device for discharging.

13. The lubricating oil according to any one of the preceding claims, characterized in that the metering element or work piston unit is movable in connection with the return spring by means of a drive element, in particular an expandable element which can be heated. Device for discharging.

14. Device according to one of the preceding claims, characterized in that the device is connected to a memory programmable controller, in particular via at least three electrical connections.

15. The method of claim 14, wherein a phase of a supply voltage, in particular a DC voltage, is connected to a first of the connections, the first connection being connected to one of the connections of the at least one switch, Is associated with one,
A ground of the supply voltage is connected to a second connection part of the connection parts, and the second connection part is connected to another connection part of the connection parts of the driving element,
And the third connection part is connected to another one of the connection parts of the at least one switch.

16. The device of claim 14 or 15, wherein the electrical connections are in the form of plugs.

17. A device according to any one of claims 14 to 16, wherein said electrical connections are arranged on a printed circuit board.

18. The method according to any one of claims 1 to 17, wherein a spring is operatively arranged with respect to the lubricating oil in the source volume, the spring being supported on the housing of the apparatus and pressurizing the plate assembled on the replaceable lubricating oil cartridge. Apparatus for discharging lubricating oil, characterized in that.