KR20070068518A - Apparatus for detecting condition power-train in heavy equipment - Google Patents

Abstract

An apparatus for detecting condition of power-train in heavy equipment is provided to sense the abnormality inside the power-train in advance and warns a user of such abnormality to prevent damage of a rotating body. The apparatus for detecting condition of power-train in a heavy equipment includes an input shaft, plural rotating bodies, a first sensor unit(100), a second sensor unit(110), an analyzer(120), a memory portion(140), a control portion(150) and plural warning lamps(160). The control portion(150) compares the reference frequency value and the reference vibration value of each rotating body of the memory portion(140) and the frequency or vibration of each rotating body of the second sensor unit(110), and decides that the rotating body is abraded and damaged and outputs a control signal when the frequency and vibration of each rotating body input from the second sensor unit are greater.

Description

Abnormality detection device of power train for heavy equipment {APPARATUS FOR DETECTING CONDITION POWER-TRAIN IN HEAVY EQUIPMENT}

1 is a cross-sectional view showing the configuration of a general speed reducer for heavy equipment;

Figure 2 is a block diagram showing the configuration of the abnormality detection device of the power train for heavy equipment according to the present invention,

3 is an exemplary view showing an example of installation of the first sensor and the second sensor constituting the abnormality detection device of the power train according to the present invention;

Figure 4 is a block diagram showing another embodiment of the abnormality detection device of the power train for heavy equipment according to the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

10: powertrain 12: input shaft

22, 32: sun gear 24, 34: planetary gear

100: first sensor means 110: second sensor means

120: analyzer 130: controller

140: memory unit 150: control unit

152: timer 160: warning lamp

200: sensor means 210: controller

220: memory unit 230: control unit

232: timer 240: warning lamp

The present invention relates to a power train for heavy equipment, and more particularly to a device for detecting the presence or absence of a power train for heavy equipment capable of detecting the presence or absence of a power train.

As is well known, heavy equipment such as excavators and cranes are equipped with a drive system for driving a vehicle. The drive system includes a hydraulic pump for generating pressure oil using a diesel engine or a gasoline engine as a driving source, and a hydraulic control valve for controlling the movement direction and flow rate of the pressure oil.

In addition, the drive system includes a driving motor for driving the vehicle and a turning motor for turning the upper swing body of the vehicle, and a power train for transmitting the power of the driving motor and the turning motor to the wheels and the upper swing body, respectively. For example, a traveling reducer, a turning reducer and the like are provided. The driving reducer and the turning reducer reduce the rotation speed of the driving motor and the turning motor, respectively, and are usually formed integrally with the driving motor and the turning motor.

1 shows a swing reducer as an example of a power train. According to this, the swing reducer 10 has a housing 11, and the input shaft 12 and the output shaft 14 are rotatably installed inside the housing 11. The input shaft 12 is connected to the rotating motor 15 to rotate, and the output shaft 14 is connected to the upper swinging body not shown.

And a first stage planetary gear device 20 and a two stage planetary gear device 30 which connect the input shaft 12 and the output shaft 14 of the swing reducer 10. The first-stage planetary gear device 20 is to be meshed with the sun gear 22 installed on the input shaft 12, the planetary gears 24 arranged to fit around the sun gear 22, and the planetary gears 24. A ring gear 25 formed on the inner circumferential surface of the housing 11 and a carrier 26 supporting the planetary gears 24 to rotate and rotate along the circumference of the sun gear 22.

The two-speed planetary gear device 30 includes a sun gear 32 that is splined to the carrier 26 of the first-speed planetary gear device 20, and a planetary gear 34 arranged to be engaged with the circumference of the sun gear 32. And the ring gear 35 formed on the inner circumferential surface of the housing 11 to be engaged with the planetary gears 34 and the planetary gears 34 to rotate and rotate around the sun gear 32. And a carrier 36 spline-coupled with the output shaft 14.

The first stage planetary gear device 20 and the second stage planetary gear device 30 appropriately decelerate the rotational speed of the swing motor 15 transmitted to the input shaft 12 and then transmit the result to the output shaft 14. do.

However, such a conventional heavy-duty powertrain is a problem that can not be easily confirmed when the rotary reducer, such as a variety of gears and shafts and bearings that support them, if an error occurs in the rotary reducer. There is this.

This problem leads to the result that the gears, shafts and bearings, etc., are damaged and continue to be driven, resulting in a problem that the entire power train is broken, and even a loss of life due to breakage of the power train. There is a problem causing.

Therefore, the present invention has been made to solve the above-mentioned conventional problems, the object is to detect the abnormality in the interior of the power train early, and then warn the driver to warn the driver such as various gears, shafts and bearings An object of the present invention is to provide an abnormality detection device for a power train for heavy equipment that can prevent damage, damage and loss of life.

In order to achieve the above object, the present invention, in the apparatus for detecting the abnormality of the power train for heavy equipment having an input shaft and a plurality of rotating bodies connected to interlock with the input shaft, the first detecting the rotational speed of the input shaft Sensor means; Second sensor means for sensing the frequency or vibration amount of the respective rotating bodies; An analyzer for processing the data input from the second sensor means and analyzing the frequency or vibration amount for each rotating body; A memory unit for storing reference frequency values and reference vibration amount values of the respective rotating bodies for each rotation speed of the input shaft inputted from the first sensor means; When the rotational speed of the input shaft from the first sensor means and the frequency or vibration amount of each rotating body from the second sensor means are simultaneously or separately input, the reference frequency of each rotating body corresponding to the rotational speed of the input shaft A value and a reference vibration amount value, and a frequency or vibration amount of each rotating body of the second sensor means corresponding to the reference frequency value and the reference vibration amount value of the respective rotating bodies are compared with each other and inputted from the second sensor means. A control unit for determining that the rotating body is worn and damaged if the frequency or vibration amount of the rotating body is larger, and outputting a control signal corresponding thereto; It is installed corresponding to each of the rotating body, it is characterized in that it comprises a plurality of warning lamps that are operated when the control signal is output from the control unit to warn that the corresponding rotating body is worn and damaged.

Another feature of the invention, the input shaft, the apparatus for detecting the presence or absence of abnormal powertrain for heavy equipment having a plurality of rotating bodies connected to the input shaft, the sensor means for detecting the frequency or vibration amount of each of the rotating bodies and; A memory unit for storing a reference frequency value and a reference vibration amount value for the average rotational speed of each rotating body input from the sensor means; When the frequency or vibration amount of the rotating bodies are input from the sensor means, the reference frequency value and the reference vibration amount value of the memory unit and the frequency or vibration amount of each rotating body input from the sensor means are compared with each other, and from the sensor means. A control unit for outputting a control signal by determining that at least one of the rotating bodies is worn and damaged if the frequency or vibration amount of the input rotating body is greater; And a warning lamp that is operated when a control signal is output from the controller to warn that the rotating body is worn and damaged.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the apparatus for detecting the abnormality of the power train for heavy equipment according to the present invention will be described in detail (the same components will be described using the same reference numerals).

Figure 2 is a block diagram showing the configuration of the abnormality detection device of the powertrain for heavy equipment according to the present invention, Figure 3 is the installation of the first sensor and the second sensor constituting the abnormality detection device of the powertrain according to the present invention. It is an illustrative figure which shows an example.

First, referring to FIGS. 2 and 3, the apparatus for detecting an abnormality of the present invention includes a first sensor means 100 for detecting a rotational speed of the input shaft 12. The first sensor means 100 is a speed sensor installed on one side of the input shaft 12, detects the rotational speed of the input shaft 12 for introducing power into the power train 10, and then outputs the detected data. .

And the abnormality detection device of the present invention, the second sensor means 110 for detecting the frequency or vibration amount of each of the rotating bodies in the powertrain (10).

The second sensor means 110 is an acceleration sensor, and the frequency of each rotating body in the power train 10, for example, sun gear 22, 32, planetary gears 24, 34, output shaft 14, bearing, and the like. Alternatively, the vibration amount is detected and the detected data is output.

Here, the acceleration sensor detects instantaneous dynamic changes such as acceleration, vibration, shock, etc. of the object, and each of the rotating bodies in the powertrain 10, that is, the sun gears 22 and 32, the planetary gears 24 and 34, When the output shaft 14, the bearings, etc. are worn or damaged, the rotational acceleration is momentarily changed to change the rotational frequency or a momentary dynamic change such as vibration or shock occurs.

And the abnormality detection device of the present invention, the analyzer 120 for processing the data input from the second sensor means (110). The analyzer 120 processes the data input from the second sensor means 110 to generate frequency or vibration for each rotor, that is, for the sun gear 22, 32, the planetary gear 24, 34, the output shaft 14, and the bearing. Analyze and output the quantity of ingredients.

Here, the analyzer 120 has a built-in program that analyzes the frequency or vibration amount of each rotating body mixed and input from the second sensor means 110 for each rotating body. Since such an analyzer is already known, a detailed description thereof will be omitted.

2 and 3 again, the abnormality detecting apparatus of the present invention includes a controller 130. The controller 130 includes a memory unit 140 and a controller 150.

The memory unit 140 incorporates the " reference frequency value " and " reference vibration amount value " of each rotor according to the rotational speed of the input shaft 12 input from the first sensor means 100. Of course, the "reference frequency value" and "reference vibration amount value" of the different rotating bodies for each rotational speed of the input shaft 12 are built in variously.

When the rotational speed of the input shaft 12 is input from the first sensor means 100 and the frequency or vibration amount of each rotating body is input from the second sensor means 110, the controller 150 receives the first sensor means 100. Reference value (reference frequency value and reference vibration amount value) of each rotating body of the memory unit 140 corresponding to the rotational speed of the input shaft 12 input from the second sensor means 110 corresponding to the reference value of each rotating body By comparing the frequency or vibration amount of each of the rotating body with each other, if the frequency or vibration amount of the rotating body input from the second sensor means 110 is larger, it is determined that the larger rotating body is worn and damaged and corresponding And output a control signal.

On the other hand, the controller 150 further includes a timer 152. The timer 152 should not allow the controller 150 to recognize the instantaneous peak value. That is, during driving, a peak is instantaneously generated when passing through the bump, in order to detect this and prevent it from being detected as abnormal.

The timer 152 delays the control signal output from the controller 150 for a predetermined time period, and then outputs the instantaneous overload to each rotating body in the power train 10, thereby outputting a frequency or vibration amount of each rotating body. In the case of instantaneous increase, for example, when the rotational speed of the input shaft 12 of the power train 10 suddenly increases and the rotational frequency or the amount of vibration of each of the rotating bodies increases momentarily, the control unit 150 controls the control signal. Prevents the output from being output immediately. Thus, even in the state where each rotor is not actually worn or damaged, the control signal is basically outputted to prevent the "error" from being output.

And the abnormality detection device of the present invention is provided with a plurality of warning means (160). The warning means 160 is a warning lamp installed to correspond to each rotating body, and when the control signal is output from the control unit 150 is activated to emit light. In particular, by emitting light according to a control signal corresponding to the worn rotating body, the driver is warned that which rotating body is worn and damaged.

The powertrain abnormality detecting device of the present invention having such a configuration detects the wear and damage of each rotating body inside the powertrain early, and warns the driver if there is an abnormality, thereby causing damage to the powertrain. Damage and casualties can be prevented. In addition, it detects the wear and damage of the rotor inside the powertrain, and accurately detects which rotor is worn and damaged, and informs the driver so that only worn and damaged rotors can be replaced and repaired, so repair and Make maintenance easy.

Next, FIG. 4 is a block diagram showing another embodiment of an apparatus for detecting an abnormality of a power train according to the present invention. The sensing device of another embodiment includes a sensor means 200 for sensing the frequency or vibration amount of each of the rotating bodies in the power train 10.

The sensor means 200 is an acceleration sensor, and each rotating body in the power train 10, for example, sun gear 22, 32, planetary gears 24, 34, output shaft 14, a rotating body such as a bearing Detect the frequency or vibration of the sensor and output the detected data.

In addition, the sensing device of another embodiment includes a controller 210. The controller 210 includes a memory unit 220 and a controller 230. The memory unit 220 includes a reference frequency value and a reference vibration amount value for the average rotational speed of each rotating body input from the sensor means 200.

When the frequency or vibration amount of the rotating bodies are input from the sensor means 200, the controller 230 includes a reference value (reference frequency value and reference vibration amount value) of the memory unit 220 and each time input from the sensor means 200. By comparing the total frequency or vibration amount with each other, if the frequency or vibration amount of the rotating body input from the sensor means 200 is greater, it is determined that any one or more of the rotating bodies is worn and damaged and outputs a control signal. It is configured to.

Meanwhile, the controller 230 further includes a timer 232. The timer 232 counts time so that the control signal of the controller 230 is delayed for a preset time and then output.

The timer 232 delays the control signal output from the control unit 150 for a predetermined time, and then outputs the instantaneous overload to each rotating body in the power train 10, thereby outputting a frequency or vibration amount of each rotating body. In the case of instantaneous increase, for example, when the rotational speed of the input shaft 12 of the power train 10 suddenly increases and the rotational frequency or the amount of vibration of each of the rotors increases momentarily, the control signal from the control unit 230 Prevents the output from being output immediately. Thus, even in the state where each rotor is not actually worn or damaged, the control signal is basically outputted to prevent the "error" from being output.

And the sensing device of another embodiment is provided with a warning means (240). As a warning lamp, when the control signal is output from the control unit 230 is activated to emit light. In particular, by emitting light according to the control signal, the driver is warned that the current rotating body is worn and damaged.

The sensing device of this other embodiment can not individually identify the abnormality of each rotating body as in the above-described embodiment, but it detects the abnormality of the frequency or vibration amount of the entire rotating body, and thus the abnormality of the power train. The presence or absence can be confirmed exactly. In particular, compared to the above-described embodiment, even if there are fewer parts can check the abnormality of the power train, the cost saving effect is very excellent.

Although the preferred embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to these specific embodiments, and may be appropriately changed within the scope of the claims.

As described above, the apparatus for detecting the abnormality of the powertrain for heavy equipment according to the present invention detects the abnormality in the powertrain early, and then warns the driver of the abnormality in the powertrain. Has the effect of preventing damage, breakage and loss of life in advance.

Claims (3)

In the apparatus for detecting the presence or absence of a power train for heavy equipment having an input shaft 12, a plurality of rotating bodies connected to interlock with the input shaft 12, First sensor means (100) for sensing the rotational speed of the input shaft (12); Second sensor means (110) for sensing the frequency or vibration amount of the respective rotating bodies; An analyzer 120 for processing data input from the second sensor means 110 and analyzing the frequency or vibration amount for each rotating body; A memory unit 140 for storing reference frequency values and reference vibration amount values of the respective rotating bodies for each rotation speed of the input shaft 12 input from the first sensor means 100; When the rotational speed of the input shaft 12 from the first sensor means 100 and the frequency or vibration amount of each rotating body from the second sensor means 110 are input simultaneously or separately, the rotational speed of the input shaft 12 Each rotating body of the second sensor means 110 corresponding to the reference frequency value and the reference vibration value of each rotating body of the memory unit 140 and the reference frequency value and the reference vibration amount of each rotating body corresponding to The control unit for comparing the frequency or vibration amount of each other with each other, and if the frequency or vibration amount of the rotating body input from the second sensor means 110 is greater, it is determined that the rotating body is worn and damaged and outputs a control signal corresponding thereto. 150; Installed in correspondence with each of the rotating body, the control unit 150 is operated when the corresponding control signal is output is a heavy, characterized in that it comprises a plurality of warning lamps 160 to warn that the corresponding rotating body is worn and damaged Cost powertrain anomaly detection device. In the apparatus for detecting the presence or absence of a power train for heavy equipment having an input shaft 12, a plurality of rotating bodies connected to interlock with the input shaft 12, Sensor means (200) for sensing the frequency or vibration amount of the respective rotating bodies; A memory unit 220 for storing a reference frequency value and a reference vibration amount value for the average rotational speed of each rotating body input from the sensor means 200; When the frequency or vibration amount of the rotating bodies is input from the sensor means 200, the reference frequency value and the reference vibration amount value of the memory unit 220, and the frequency or vibration of each rotating body input from the sensor means 200. Compared with each other, if the frequency or vibration amount of the rotating body input from the sensor means 200 is greater, it is determined that at least one of the rotating body is worn and damaged and the control unit 230 for outputting a control signal; ; When the control signal is output from the control unit 230 is activated to detect the abnormality of the power train for heavy equipment, characterized in that it comprises a warning lamp 240 for warning that the rotating body is worn and damaged. The method according to claim 1 or 2, And a timer (152, 232) for counting the time so that the control signal of the control unit (150, 230) is delayed for a predetermined time and then outputted.

Images