JPS59120554A - Automatic grease feed device for machine with dump mechanism - Google Patents

Abstract

PURPOSE:To supply grease neither excessively nor insufficiently by automatically operating a grease supply means with a control unit and supplying grease to the moving part of a dump mechanism etc. when the number of ups and downs of a packing box reaches the number of preset ups and downs. CONSTITUTION:When a cylinder device 8 is stretched and a packing box 3 stands up, a detection switch 24 is closed and a buzzer 26 issues an alarm and a stand- up signal is sent to the counting section 23 of a control device 20. The counting section 23 sequentially counts the number of ups and downs by this signal and substracts the number of ups and downs mentioned above from the preset number of ups and downs of a presetting section 22. When the subtracted value is set to 0, a control signal is issued to an operation circuit 25. When the operation circuit 25 receives this signal, the pump 15 of a grease supply means 14 is driven. Consequently, grease is supplied to the rear end hinge 4 of a packing box 3 and each hinge of a dump mechanism 5 through the respective distribution valves 16 to 19 from a tank. In addition, since the control device mentioned above is connected to a battery power supply, the subtracted value of the counting section 23 is set to 0 when the battery is replaced and grease supply means 14 can be always operated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic greasing device for a machine equipped with a dump mechanism, such as a dump truck.

In the above-mentioned dump truck, the cargo box is supported on the vehicle frame via a dumping mechanism so that it can be raised and lowered, or a large number of shaft supports are provided at the hinge portion that connects the cargo box and the vehicle frame, and at each hinge portion of the dumping mechanism. In order to ensure smooth operation of the hinge, it is necessary to supply grease to the shaft support.

In the past, the above-mentioned grease supply, that is, lubrication, was carried out manually manually, but in addition to being time-consuming due to the large number of shaft supports, forgetting to replenish the grease could cause the grease IJ to break, resulting in damage to the shaft parts. This often resulted in burn-in.

On the other hand, some systems install a greasing pump between the vehicle frame and the cargo box and lubricate each time the cargo box rises and falls. There was a problem in which dirt stuck to the grease that protruded from the branch, causing contamination.

In view of this, the present invention connects a greasing means to a movable part such as a dump mechanism, connects a control device operated by battery power to the greasing means, and adjusts the amount of movement according to the number of ups and downs of an operating body such as a cargo box. The present invention provides an automatic greasing device for a machine equipped with a dump mechanism that can replenish an optimal amount of greasing by automatically operating a greasing means.

Hereinafter, the structure of the present invention will be explained based on the drawings of the seventh embodiment.

<Example/> This example is shown in FIGS. 1 and 2. In the dump truck 1 shown in FIG. 1, 2 is a vehicle frame, O is a cargo box supported at the rear end of the vehicle frame 2 by a hinge 4, and 5 is a tamp mechanism for raising and lowering the cargo box. In this tamp mechanism 5, one end of the triangular arm B is pivotally connected to the cargo box compartment by a hinge 7,
Both ends of a cylinder device 8 are connected to the center of the triangular arm 6 and the vehicle frame 2 by hinges 9 and 10, and both ends of a tension link 11 are connected to the other end of the triangular arm 6 and the vehicle frame 2 by hinges 12.
．． They are connected by 13.

Reference numeral 14 denotes a greasing means for supplying grease to each of the hinges 4, 9, etc., which includes an electric pump 15 connected to a grease tank (not shown), a first distribution valve 16 connected to the electric pump 15, and a first distribution valve 16 connected to the electric pump 15. A second distribution valve 17 to a third distribution valve 19 are connected to the distribution valve 16, and the second distribution valve 17 to the third distribution valve 19 are connected to each of the hinges 4, 9, etc.

2D is a control device that operates the greasing means 14, and is always connected to the battery power source 21 of the dump truck 1.

In this control device 20, reference numeral 22 denotes a raising and lowering number setting unit that sets the number of raising and lowering of the packing box 6 for greasing. 2
Reference numeral 6 denotes a counting section that counts the difference between the number of times set by the number of hoisting times setting section 22 and the actual number of hoistings of the packing box 6, to which a detection switch 24 is connected which closes and outputs a signal when the packing box 6 is raised. and outputs a signal when the count value is zero. Reference numeral 25 denotes an operating circuit for a set of relays that receives a signal from the counter 23 and sends an operating signal to the greasing means 14.

In FIG. 1, 26 is a dump buzzer, which issues an alarm when the cargo box 3 is erected in response to a signal from the detection switch 24.

A specific circuit configuration of the control device 20 is shown in FIG. In the same figure, 27.28 is the number of ups and downs setting section 2.
Setting switch 2 constitutes 2, 29°60 is a counter (0MO3I, 31.32 is free/
9777 B, a power supply circuit for stabilizing the pump circuit; 54, a power switch; 65, a manual switch/chi; 66, an indicator light;

Next, to explain the operation of this embodiment, the number of times the cargo box 6 is raised and lowered is set in advance at the number of times setting section 22 is used to set the number of times when greasing is to be performed seven times. First, when the cylinder device 8 is extended and the cargo box 5 is erected, the detection switch 24 is closed.
The tamper buzzer 26 emits an alarm, and the counter 26
A stand-up signal is sent to The counting section 26 reads this standing signal, sequentially counts the number of ups and downs, and subtracts the number of ups and downs set by the ups and downs setting section 22, and when the subtracted value becomes zero, the operation circuit 25 controls the number of ups and downs. A signal is sent. The actuation circuit 25 receives the control signal and sends an actuation signal to the greasing means 14. As a result, the electric pump 15 of the greasing means 14 is energized, and the electric pump 15 is supplied from the grease tank to the hinge 4 at the rear end of the cargo box 5 and the dump mechanism 5 through the distribution valves 16, 17, 18, and 19. Grease is supplied to the hinge.

Therefore, in this example, the control device 20 and the battery power source 21 are always connected, that is, they are kept energized, so that the subtraction value data in the counting section 26 is held. If the power supply 21 goes out,
The subtraction value data of the counting section 26 becomes zero. Therefore, at the same time when the power is restored by replacing the battery or the like, a signal is sent from the counting section 26 to the greasing means 14 via the operating circuit 25.
Greasing is performed.

As shown above, if the battery power supply 21 is cut off, greasing will be performed before the number of ups and downs of the packing box reaches the set number, but the problem of insufficient amount of greasing to each hinge will occur. Therefore, even if there is an abnormality in the power supply, the control device 20 operates safely regarding greasing.

Further, in the case of this example, since the circuit configuration of the control device 20 is simple, the power consumption is extremely low, and even if the control device 20 is constantly connected to the battery power source 21, the battery will hardly be depleted. Furthermore, due to the current stored in the capacitor provided in the circuit of the control device 20, the data in the counter 2 is retained even if the power outage lasts for several minutes.

<Embodiment 2> In this embodiment, data in the counter can be reliably retained even when the battery power is cut off, and is shown in FIGS. 3 and 2. Note that the same reference numerals are used for the same components as in the embodiment.

In other words, the control device 40 of this example includes a number of ups and downs setting section 22, a counting section 26, an operating circuit 25, and a storage section 41, as shown in FIG. The storage section 41 uses a keep relay and is connected to the counting section 26.
The subtraction value data is stored as a contact signal.

A specific circuit configuration of the control device 40 is shown in FIG.

In this example, the storage unit 41 mechanically holds the contact signal unless the keep relay structure reset voltage is applied, so even if the battery power is cut off, the subtracted value data of the counter 2 is stored in the storage unit 41. will be remembered and remain. Therefore, when the battery power is restored, by reading the contact signal of this keep relay, it is possible to continue counting based on the subtracted value data before the power was turned off. Greasing can be carried out according to the number of times.Furthermore, when the cargo box 6 is not being raised or lowered, the connection between the control device 40 and the battery power source can be cut off, thereby preventing wastage of power.

As described above, according to the present invention, a greasing means is connected to a movable part such as a dump mechanism, a control device operated by battery power is connected to the greasing stage, and the number of ups and downs is set by the luffing frequency setting section. Since the difference between the set number of times set and the actual number of ups and downs is counted by the counter and the greasing is performed according to the set number of times, it is possible to replenish the movable parts such as the dump mechanism with just enough or too little. The excellent effect of being able to achieve this is obtained.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention; FIG. 1 is a schematic configuration diagram showing an automatic lubrication device according to an embodiment, FIG. 2 is a control circuit diagram of the same example, and FIG. 3 is an embodiment! FIG. 9 is a schematic configuration diagram showing an automatic lubrication device, and FIG. 9 is a control circuit diagram of the same example. 1...Tamp truck, 2...Car frame, 6.
...Loading box, 5...Dump mechanism, 14...
... Greasing means, 20.40 ... Control device,
21... Battery power source, 22... Up and down frequency setting section, 26... Counting section, 24...
・Detection switch, 25...Operating circuit

Claims (2)

[Claims] (1) In a machine in which a working body such as a cargo box is supported on a base frame via a dumping mechanism so as to be able to rise and fall, a greasing means is connected to the movable part of the dumping mechanism, and the greasing means is Automatic feeding of a machine equipped with a dumping mechanism, characterized in that a control device is connected to the control device that counts the difference between the number of ups and downs of a working body and sends an operation signal to a greasing means, and the control device is operated by battery power. Fat device. (2) The control device consists of a setting section that sets the number of ups and downs, a counter that counts the difference between the set number of ups and downs and the actual number of ups and downs, and an operating circuit that sends an activation signal to the greasing means. 2. The automatic greasing device for a machine equipped with a dump mechanism according to claim 1, wherein the count value is maintained by maintaining the energization state from the battery power source. U) The control device includes a setting unit that sets the number of ups and downs, a counter that counts the difference between the set number of ups and downs and the actual number of ups and downs, an operating circuit that sends an activation signal to the greasing means, and a count value in the counter. An automatic lubrication device for a machine equipped with a dump mechanism according to claim 1, comprising a storage section for storing .