JP2003139657A - Apparatus and method for control of remaining life of seal in exciter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method wherein the remaining life of a seal is controlled with high accuracy by a method wherein a sliding amount in an excitation actually influencing the life of the seal is grasped precisely without performing an uncoupling and disassembling inspection or the like. SOLUTION: The seal remaining-life control apparatus 40 for an exciter 1 controls the life of the seal applied to a cylinder in the exciter 1 used to excite a vibration body. The control apparatus is provided with a target-wave generation circuit 32 which generates target waves used to slide the cylinder and an accelerometer 38 and a displacement sensor 39 which detect the sliding amount of the cylinder. On the basis of a waveform detected by them, a recent sliding amount is integrated, its integrated result is added to a previous total sliding amount, and the life of the seal is decided on the basis of whether the total sliding amount reaches a predetermined set value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal remaining life management device and method for managing the remaining life of a seal used in a vibration exciter, and a server for monitoring the device, and more particularly to a vibration exciter. The present invention relates to a seal remaining life management apparatus and method for managing the remaining life of a seal on the basis of the result of integration, and a server for monitoring the apparatus.

[0002]

2. Description of the Related Art Generally, nitrile is used as a sliding part (cylinder part) of a hydraulic exciter used in various vibration devices such as a vibration table (for example, a fatigue vibration test device, a vehicle vibration test device, a seismic vibration table). Rubber seals are used.

[0003] Conventionally, in order to grasp deterioration over time such as wear of the seal, it is necessary to perform an open disassembly inspection at the time of periodic inspection, and in this case, by visually observing or touching the state of the seal, That is, the deterioration of the seal has been grasped depending on the intuition and experience of the inspector or the operating time of the hydraulic cylinder. Further, the open disassembly inspection cycle of the vibration exciter is usually performed by controlling the operating time of the vibration device, for example, by the hour meter of the hydraulic pump.

[0004]

However, the vibration exciter operates the hydraulic pump to increase the hydraulic pressure and warm it up, and then
The actual vibration test is performed (the cylinder slides at this time), and the operation time is counted from the end of the test until the hydraulic pump is stopped. If it is controlled by, the time from the operation of the hydraulic pump to its stop is added up, so it is necessary to accurately grasp the vibration time and the sliding amount (cylinder expansion / contraction amount) during vibration that have a large effect on the seal life. Had the problem of being difficult.

Further, the open disassembly inspection is a heavy burden on the user who owns the equipment in terms of construction period and cost, and it is proposed to carry out a periodic inspection based on the equipment operation time management (hydraulic pump hour meter, etc.) recommended by the vibration maker manufacturer. (For example, once every three years)
Is often not adopted. As a result, the seal breakage suddenly occurred due to deterioration over time, and the vibration exciter of the user-owned equipment became unusable, which greatly affected the test plan planned by the user and also required for equipment restoration. There was also the problem that additional costs could be expensive.

By the way, if the shaker manufacturer does not request the open disassembly inspection of the shaker from the user or reports the usage status of the shaker, the shaker will once put the shaker in the equipment owned by the user. However, there is also a problem that it is not possible to fully grasp how the vibrator is used and how much the seal of the vibrator is deteriorated.

In today's highly networked society, by using the existing server-client system utilizing the Internet or the like, it is possible to accurately grasp the usage status of the user-owned vibrator by centralized management. It is possible to take appropriate action from the server side (vibrator manufacturer side) according to the situation.

Therefore, the present invention has been made in view of the above, and it is possible to accurately manage the seal life without performing open disassembly inspection of the vibration exciter. An object of the present invention is to provide an apparatus, a method thereof, and a server that monitors the apparatus.

[0009]

In order to solve the above-mentioned problems, a seal remaining life management device for a vibration exciter according to an aspect of the present invention is applied to a cylinder of a vibration exciter for vibrating a vibrating body. In a seal remaining life management device for a vibration exciter that manages the life of a seal, a target wave generation unit that generates a target waveform for sliding the cylinder, a detection unit that detects a sliding amount of the cylinder, and A sliding amount integrating unit that integrates the current sliding amount based on the waveform detected by the detecting unit and adds the integrated result to the total sliding amount before that,
It is characterized by further comprising: a determining means for determining the life of the seal based on whether or not the integrated result of the sliding amount integrating means has reached a predetermined set value.

According to the seal remaining life management device of the vibration exciter of the present invention, the target wave generating means generates the target waveform for sliding the cylinder of the vibration exciter, and the detecting means generates the target waveform based on the target waveform. The sliding amount of the sliding cylinder is detected, the sliding amount integrating means calculates the sliding amount based on the detected waveform, and then the total sliding amount is integrated, and the judging means sets the integrated result to a preset threshold value. Judge whether it has reached or not.

Therefore, the seal remaining life management device of the vibration exciter according to the present invention does not require overhauling and disassembling the vibration exciter, and does not rely on the intuition or experience of the inspector or the operating time of the vibration exciter. , It becomes possible to manage the remaining life of the vibration exciter with high accuracy.

Here, in the present invention, the vibrating body means a fatigue vibration test apparatus, a vehicle vibration test apparatus (in this case, a vibration table may not be necessary), or a vibration table of a vibration apparatus such as an anti-vibration table. In view of the features of the present invention, the vibration exciter particularly refers to a vibration exciter having a hydraulic cylinder, but may be a pneumatic type cylinder, a conductive type cylinder, or the like.

The target waveform may be a sine wave, a square wave, a triangular wave, a rectangular wave, or a rectangular waveform with a good time function (regular wave), but other than that, an irregular wave, a transient wave, or actually It may be a measured waveform, for example, an earthquake waveform observed at a weather station or a random wave such as an actual road surface wave. Since the present invention makes a determination based on the amount of sliding of the cylinder, it is more effective than the conventional method (method capable of performing only simple integration) particularly when a random wave is used.

In the present invention, the waveform detected by the detection means is a target waveform generated by the target wave generation means or a response waveform detected from the cylinder sliding based on the target wave. Any of these may be used, and a waveform switching means for switching between the target wave and the response wave may be further provided.

Thus, when the response waveform is used,
Since a more accurate sliding amount corresponding to the actual sliding of the cylinder can be integrated, more accurate residual life management of the seal can be performed. On the other hand, when the target wave is used, it becomes possible to predict the sliding amount before the test.

When the detection means detects the response waveform, the detection target may be either acceleration or displacement of the cylinder, and may further include detection target switching means for switching between acceleration and displacement.

Thus, the present invention can be applied to a vibration exciter having a cylinder equipped with either an acceleration sensor or a displacement sensor, and this detection target switching means can be selected by the user. Therefore, the present invention can be applied to an existing vibrator having an acceleration sensor or a displacement sensor. For the shaker that is currently in operation, it is possible to deal with it by setting an initial value according to the usage situation up to that time, which is heard from the user. Here, when the acceleration of the cylinder is detected using the acceleration sensor, the detection value is converted into the displacement by performing the integration twice, and is applied as the sliding amount.

Further, according to the present invention, the total sliding amount accumulated by the sliding amount accumulating means is subtracted from the predetermined set value, and the result is divided by the sliding amount of the cylinder in a predetermined single vibration. The calculation unit may further include a calculation unit that calculates the predicted number of possible vibrations.

With this, it is possible to provide the user with the predicted number of possible vibrations of the cylinder of the vibration exciter, and based on this, the user can make a test plan. Note that the sliding amount in a predetermined one-time excitation may be any of the sliding amount in the most recent one-time excitation, an average one-time excitation sliding amount, an empirically determined manually input sliding amount, and the like. It may be predetermined. Then, these can be selected by the user.

Further, the seal remaining life management device for the vibration exciter according to the present invention further comprises display means for displaying the total sliding amount accumulated by the sliding amount accumulating means and / or the judgment result by the judging means. It is also possible to further include display means for displaying the predicted number of possible vibrations calculated by the calculation means, the total sliding amount accumulated by the sliding amount accumulating means, and / or the judgment result by the judging means. . This allows the user to visually recognize various data. Then, the display means may display an estimated arrival schedule to the predetermined set value based on the total sliding amount accumulated by the sliding amount accumulating means and the usage status of the cylinder.

Further, when it is judged that the judgment result by the judgment means has reached the predetermined threshold value, an alarm for outputting an alarm signal indicating that the seal life of the vibrator has been exceeded. You may further provide a signal output means.
This allows the user to be informed that the shaker seal has exceeded its life span, and the user can respond accordingly.
Appropriate processing such as open inspection and seal replacement can be taken.

In addition, the method for managing the remaining life of the vibrator sealer according to the present invention manages the remaining life of the seal applied to the cylinder of the vibrator for vibrating the vibrating body. In the method, a step of generating a target waveform for sliding the cylinder, a step of detecting a sliding amount of the cylinder, and a step of integrating the present sliding amount based on the waveform detected by the detecting means, and A step of adding the integrated result to the total sliding amount before that, and a step of judging the life of the seal based on whether the integrated result of the sliding amount integrating means has reached a predetermined set value or not. Is characterized by.

According to the method for managing the remaining life of the vibrator of the vibration exciter according to the present invention, a target wave for sliding the cylinder is generated, the sliding amount of the cylinder is detected, and based on the detected waveform, the cylinder The amount of sliding is integrated and the result is added to the total amount of sliding before that. The life of the seal is determined based on whether or not the integrated result thus obtained has reached a predetermined set value.

Therefore, according to the method for managing the remaining life of the vibration exciter according to the present invention, without performing the overhaul and disassembly inspection of the vibration exciter, and without relying on the intuition of the inspector or the operating time of the vibration exciter. It becomes possible to control the seal life of the vibrator with high accuracy.

The waveform detected in the detecting step is either the target waveform generated in the generating step or the response waveform detected from the cylinder sliding on the basis of the target wave. The method may further include a step of switching the target wave and the response wave before or after the detecting step.

When the response waveform is detected in the detecting step, the detection target is either the acceleration or the displacement of the cylinder, and the acceleration and the displacement of the cylinder are detected as the detection target before the detecting step. It may further have a step of switching between and.

The seal remaining life management program for a vibration exciter according to the present invention allows a computer to slide the cylinder in order to manage the life of the seal applied to the cylinder of the vibration exciter for vibrating the vibrating body. Target wave generating means for generating a target waveform for performing, a detecting means for detecting the sliding amount of the cylinder, the sliding amount of this time is integrated based on the waveform detected by the detecting means, and the integrated result is calculated as before. A sliding amount integrating means for adding to the total sliding amount, and a function as a determining means for determining the life of the seal based on whether or not the integrated result of the sliding amount integrating means reaches a predetermined set value. To do.

Further, in the seal remaining life management program for the vibration exciter according to the present invention, the waveform detected by the detecting means is a target waveform generated by the target wave generating means,
Alternatively, it is one of the response waveforms detected from the cylinder that slides based on the target wave, and further has a program code for causing a computer to function as a waveform switching unit that switches between the target wave and the response wave. You may.

Further, when the detecting means detects the response waveform, the detection target is either the acceleration or the displacement of the cylinder, and the computer detects the acceleration and the displacement of the cylinder as the detection target. You may further have the program code for functioning as an object switching means.

Further, the present invention may be provided as a computer-readable recording medium recording a seal remaining life management program of any one of the above-mentioned vibrators to be executed by the computer.

As a result, the above-mentioned seal remaining life management device of the vibration exciter can be realized by using a computer, and can be downloaded as a computer-executable program via the Internet or can be read by a computer recording the program. The device can be provided to the user by transferring it as a recording medium.

According to another aspect of the present invention, in a seal remaining life management server for a vibration exciter for managing the life of a seal applied to a cylinder of a vibration exciter in a client for vibrating a vibrating body. A receiving unit that receives detection data that is transmitted from the client and that detects a sliding amount when the cylinder of the vibration exciter slides; and a sliding amount of this time based on the detection data received by the receiving unit. And the sliding amount integrating means for adding the integrated result to the previous total sliding amount, and the life of the seal based on whether the integrated result of the sliding amount integrating means has reached a predetermined set value or not. And a transmitting means for transmitting the integration result accumulated by the sliding amount integrating means and the determination result determined by the determining means to the client. It is characterized in.

According to the seal remaining life management server of the vibration exciter of the present invention, the target waveform data, the detected acceleration data and / or the displacement data when the vibration test is performed in the client are received from the client, and they are received. Based on the data, the sliding amount and the total sliding amount of this time are integrated, it is determined whether or not the integrated result has reached a predetermined set value, and the integrated result and the determination result are transmitted to the client.

Also, in the seal remaining life management server of the vibration exciter for managing the life of the seal applied to the cylinder of the vibration exciter in the client for vibrating the vibrating body, it is transmitted from the client. , The detection data obtained by detecting the sliding amount when the cylinder of the vibration exciter slides, and the current sliding amount based on the detected data are integrated, and the integrated result is added to the previous total sliding amount. Receiving means for receiving the obtained integration result, determining means for determining the life of the seal based on whether or not the integration result received by the receiving means has reached a predetermined set value, and the sliding means. It is characterized in that it comprises: a transmission means for transmitting the integration result integrated by the motion amount integration means and the determination result determined by the determination means to the client.

According to the seal remaining life management server of the vibration exciter of the present invention, the client determines the target waveform data, the detected acceleration data and / or the displacement data when the client performs the vibration test, and the data from the client. The integrated result obtained by integrating the current sliding amount and the total sliding amount is received from the client, it is determined whether the received integrated result has reached a predetermined set value, and the determination result is transmitted to the client.

Therefore, since the seal remaining life management server of the vibration exciter of the present invention can grasp the usage status of each cylinder of the vibration exciter on each client side,
The remaining life of the seal of the cylinder can be centrally managed, and the accumulated data can be provided to each client.

Further, the seal remaining life management server of any one of the above vibration exciters may further include display means for displaying the integration result and the determination result of each client for each client or collectively. As a result, the server administrator can visually check the usage status of the shaker in each client.

Further, when the seal pre-life management server of any one of the above-mentioned vibrators determines that the judgment result by the judging means has reached the predetermined threshold value, the vibrator is An alarm signal output means for outputting an alarm signal indicating that the seal life has been exceeded to the client may be further provided. As a result, it is possible to notify each client that the life of the vibration exciter has been exceeded.

The seal remaining life management program for the vibration exciter according to another aspect of the present invention is applied to manage the life of the seal applied to the cylinder of the vibration exciter in the client for vibrating the vibrating body. Receiving means for receiving the seal remaining life management server computer of the shaker, the detection data which is transmitted from the client and detects the sliding amount when the cylinder of the shaker is slid, and is received by the receiving means. A sliding amount integrating means that integrates the current sliding amount based on the detection data and adds the integrated result to the previous total sliding amount, and whether the integrated result of the sliding amount integrating means has reached a predetermined set value. The determination means for determining the life of the seal based on whether or not the determination result, the integration result integrated by the sliding amount integration means, and the determination result determined by the determination means It characterized in that to function as a transmission means, for transmitting to the Ant.

The seal remaining life management program for the vibration exciter is used to manage the life of the seal applied to the cylinder of the vibration exciter in the client for vibrating the vibrating body. The life management server computer integrates the detection data transmitted from the client, which detects the sliding amount when the cylinder of the vibration exciter slides, and the sliding amount of this time based on the detection data. Receiving means for receiving an integrated result obtained by adding the result to the total sliding amount before that, and sealing based on whether the integrated result received by the receiving means has reached a predetermined set value or not. Determining means for determining the life of the device, transmitting means for transmitting the integration result accumulated by the sliding amount integrating means and the determination result determined by the determining means to the client It characterized in that to function as a.

Further, in any of the above-described seal remaining life management programs for the vibration exciter, the seal remaining life management server computer of the vibration exciter is used to collectively or collectively collect the integration result and the determination result of each client. You may further have the program code for functioning as a display means to display.

Further, the present invention may be provided as a computer-readable recording medium recording a seal remaining life management program for any one of the above-described vibrators to be executed by the computer.

As a result, the above-mentioned seal remaining life management server of the vibration exciter can be realized by using a computer, and can be downloaded as a program executable by the computer via the Internet or can be read by a computer recording the program. The server can be provided to the user by transferring it as a recording medium.

[0044]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a seal remaining life managing apparatus for a vibrator and a method therefor and a server for monitoring the apparatus according to the present invention will be described in detail below with reference to FIGS. . It should be noted that this embodiment is given as an example, and the present invention should not be limitedly interpreted thereby.

(Embodiment 1) FIG. 1 is a side view of a vibrator 1 to which a seal remaining life management device for a vibrator according to an embodiment of the present invention is applied. In FIG. 1, the vibration exciter 1 includes an outer cylinder 11, a piston rod 12, and the like, and is arranged between the wall 2 and the vibrating body (vibration target) 3 in the horizontal axis direction. It should be noted that, in this figure, the vibration exciter 1 applied in the horizontal axis direction is shown. It goes without saying that a management device can be applied.

FIG. 2 is a sectional view of the vibration exciter 1 according to one embodiment of the present invention. The piston rod 12 inscribed in the outer cylinder 11 of the shaker 1 is slidable in the left-right direction in this figure, and the contact surface between the outer cylinder 11 and the piston rod 12 serves to seal oil. Multiple seal rings 1
3 (4 in this figure) are arranged. The seal remaining life management device for the vibrator of the present invention manages the remaining life of the seal ring 13.

FIG. 3 is an overall system diagram of a control device for a vibration exciter to which the present invention is applied. In FIG. 3, the control device 31 includes a target wave generation circuit 32, a feedback calculation processing circuit 33, and an amplification circuit 34, and a seal residual life management device 40 (hereinafter, referred to as “seal It is abbreviated as "remaining life management device") or is connected to it.

The target wave signal output from the target wave generation circuit 32 is input to the feedback calculation processing circuit 33 and the waveform switching circuit 35. Feedback arithmetic processing circuit 3
3 feedback-controls the target wave signal based on the response wave signal detected by the vibration exciter 1 input from the amplifier circuit 36, and outputs the feedback-controlled target wave signal to the amplifier circuit 34. Then, the target wave signal amplified by the amplifier circuit 34 is output to the servo valve 14 of the vibrator 1. The servo valve 14 operates based on the output signal of the control device 31, that is, the target wave signal, drives the piston rod 12, and slides the cylinder.

When the cylinder of the vibration exciter 1 slides, the acceleration sensor 38 and the displacement sensor 39 detect the sliding state and output these detection data signals to the target switching circuit 37. The target switching circuit 37 includes a seal remaining life management device 40.
The acceleration signal detected by the acceleration sensor 38 and the displacement signal detected by the displacement sensor 39 are switched and output to the amplifier circuit 36 based on the control signal from. Then, the response wave signal amplified by the amplifier circuit 36 is
Waveform switching circuit 35 and feedback calculation processing circuit 33
Is output to.

The waveform switching circuit 35 switches between the target wave signal input from the target wave generation circuit 32 and the response wave signal input from the amplification circuit 36 based on the control signal of the seal remaining life management device 40. , Seal remaining life management device 40
Output to.

FIG. 4 is a schematic block diagram of the seal remaining life management device 40 of the vibration exciter according to the embodiment of the present invention. The seal remaining life management device 40 includes a control unit 41, an input unit 42, a RAM 43, a storage unit 44, an alarm generation unit 45,
The control unit 41 includes a display unit 46 and a communication control unit 47, and all components except the control unit 41 are connected to the control unit 41 by a bus. Although not shown, the sticker remaining life management device 40 may include other components such as a printing unit that prints the processing results when various kinds of processing are executed.

The control unit 41 includes a CPU (Central Processi).
ng Unit) and is stored in a storage medium (not shown) in the storage unit 44, such as a seal remaining life determining device (FIG. 7) and an integration process (FIG. 8) which will be described later. Various processing programs executed by 40, various instructions input from the input unit 42, or various data corresponding to the instructions are stored in the RAM 43, and various types are stored according to the application programs expanded in the RAM 43 according to the input instructions and the input data. The processing is executed and the processing result is stored in the RAM 43 and displayed on the display unit 46. Then, the control unit 41 saves the processing result stored in the RAM 43 in the storage destination in the storage medium input from the input unit 42. Note that these processes may be realized by dedicated hardware.

The input section 42 includes a keyboard provided with cursor keys, numeral input keys, various function keys, and the like, and a mouse, and outputs a depression signal of a depressed key and a mouse position signal to the control section 41.

A RAM (Random Access Memory) 43 is
The control unit 41 forms a program storage area in which various data is expanded when the various application programs are executed, and a memory area in which various data based on the execution of the above processing, judgment results, and the like are expanded.

The storage section 44 has a storage medium (not shown) in which programs and data are stored in advance.
This storage medium is composed of a magnetic or optical storage medium, a semiconductor memory, or the like. This storage medium is fixedly provided in the storage unit 44 or is detachably mounted. The storage medium has a seal remaining life determination processing program and an integration processing program executed by the seal remaining life management device 40. Various processing programs are stored, and data processed by these various processing programs are stored.

The alarm generation unit 45 includes a voice output unit such as a bell and a speaker, and generates an alarm sound based on the alarm output data from the control unit 41. The display unit 46 displays the CRT (Ca
The display data and alarm data input from the control unit 41 are displayed.

The communication control unit 47 is connected to a communication line (not shown) including the Internet such as LAN and WWW, and is connected to the control device 31 of the vibration exciter 1 and the waveform switching circuit 35 of FIG. 3 via the LAN. A communication control function for exchanging data with each other and for exchanging various commands and various data with the server computer 100 according to the second embodiment described later via the communication line (Internet or the like). Have.

In FIG. 3, the waveform switching circuit 35 and the target switching circuit 37 are shown together with the control device 31 of the vibration exciter 1. However, these circuits are the seal remaining life management device of the vibration exciter of the present invention. The seal remaining life management device 40 is a constituent element of the control unit 40, and may be directly connected to the control unit 41 instead of being connected via the communication control unit 47.

FIG. 5 shows an example of a target waveform for the displacement of the cylinder generated by the target wave generating circuit 32 in the embodiment of the present invention. The difference | L1-L2 | between L1 and L2 in the figure is the cylinder displacement difference ΔL. The control unit 41 of the seal remaining life management device 40 calculates the current sliding amount of the cylinder by accumulating this ΔL (L = ΣΔL). Then, the control unit 41 adds the integrated sliding amount L to the total sliding amount of the cylinder of the vibrator 1 so far (Ls = Ls + L) to calculate the total sliding distance at the present time. .

Further, the control section 41 subtracts this total sliding amount from the predetermined seal sliding limit distance Lsmax,
By dividing that value by the amount of one-time excitation sliding ((Lsm
ax-Ls) / L0), the number of possible excitations in the future (prediction)
Calculate N. In addition, as the one-time oscillating sliding amount L0,
It is possible to select one of the most recent amount of sliding in one-time excitation, the average amount of one-time excitation and sliding, and the amount of manually input sliding set by the user in the input unit 42. The number of possible vibrations can be predicted. Based on these calculation results, a shaker seal remaining life management screen as shown in FIG. 6 is configured and displayed on the display unit 46. The lower graph of FIG. 6 shows a standard value of the seal life (predetermined by the manufacturer), that is, an expected schedule for reaching the seal sliding limit distance. The user can easily draw up a future test plan based on the displayed seal remaining life management screen, and can manage the life of the seal ring 13 of the vibrator 1 with high accuracy.

In the case where the above calculation is performed using the response wave, the target switching circuit 37 causes the acceleration sensor 38 to operate.
When the acceleration data detected by is selected,
The acceleration data is integrated twice to be converted into displacement data and the calculation is executed. Similarly, when the target waveform for acceleration is input in the above case, the data is integrated twice and converted into displacement data.

Next, the operation of the seal remaining life management device 40 will be described with reference to the flowcharts of FIGS. 7 and 8.
FIG. 7 is a flowchart of the seal remaining life determination process executed by the seal remaining life management device 40 according to the embodiment of the present invention. When the hydraulic pump of the shaker 1 is warmed up or the power of the shaker is turned on, this seal remaining life determination process is started.

First, the user inputs the target waveform through the input section 42 (step S1), and also inputs whether the waveform to be detected is the target wave or the response wave (step S2). Then, waveform data is output from the target wave generation circuit 32 in accordance with this target waveform, the waveform data is subjected to predetermined processing and output to the servo valve 14, and the servo valve 14 is driven to vibrate the vibrating body. At the same time, the acceleration and displacement due to the sliding of the cylinder are detected by the acceleration sensor 38 and the displacement sensor 39 (step S
3). The detection target waveform may be set after the vibrating body is vibrated.

In step S4, the control section 41 determines whether or not the set detected waveform is the target waveform.
If the target waveform is the target waveform, the process proceeds to step S5, and the control unit 41 stores the target waveform data in the RAM 43. If it is not the target waveform, the process proceeds to step S6.

In step S6, the control unit 41 determines whether or not the set target for detecting the response waveform is acceleration. When the detection target is acceleration, the control unit 41
Integrates the acceleration data output from the acceleration sensor 38 twice with respect to time (step S7), and stores the calculation result in the RAM 43 (step S8). If the detection target is not acceleration, the detection target is displacement data, so the detection data is stored in the RAM 43 as it is (step S9).

In this way, the steps S5, S8, or S
9, the preset integration processing based on the waveform data obtained in any of 9 and stored in the RAM 43 (see FIG. 8).
Is executed (step S10), and then the process proceeds to step S11.

At step S11, the control section 41
It is determined whether or not the total sliding amount integrated by the integration process is equal to or less than a preset threshold value. If it is not less than or equal to the threshold value, the control unit 41 causes the alarm generation unit 4 to
After the alarm is output to 5 (such as the occurrence of an alarm or the lighting of an alarm lamp), when it is less than or equal to the threshold value, the various data obtained by the vibration test of this time is stored in the storage medium in the storage unit 44. The data is stored in a predetermined storage location and the data is displayed on the display unit 46 as shown in FIG. 6 (step S13). After that, the control unit 41 ends the seal remaining life determination process.

FIG. 8 is a flowchart of the preset integration process executed in steps S10 and S34 of the seal remaining life determination process of FIGS. 7 and 11. After shifting to step S10 or step S34,
This integration process starts.

As shown in FIG. 5, the control unit 41 determines the cylinder displacement based on the sliding distance from the origin position.
Displacement difference ΔL (ΔL =
| L2-L1 |) is calculated (step S21), and all sliding amounts L (L = ΣΔL) of this time are integrated (step S21).
22), and the integrated result is the total sliding amount L of the cylinder so far.
It is added to s (Ls = Ls + L) (step S23).

Further, the control unit 41 subtracts this total sliding amount from the predetermined seal sliding limit distance Lsmax, and divides the value by the one-time vibration sliding amount ((Lsmax-Ls) / L0), the number of possible vibrations (prediction) N is calculated (step S24), and this calculation process is terminated. In addition, as the one-time oscillating sliding amount L0,
It is possible to select one of the most recent amount of sliding in one-time excitation, the average amount of one-time excitation and sliding, and the amount of manually input sliding set by the user in the input unit 42. It is also possible to predict the number of possible vibrations.

The program for realizing the function of the seal remaining life management device 40 shown in FIGS. 7 and 8 is recorded in a computer-readable recording medium, and the program recorded in this recording medium is recorded in the computer system. The remaining life of the seal may be managed by reading and executing it. It should be noted that the “computer system” mentioned here includes an OS (Operating System) and hardware such as peripheral devices.

As described above, the seal remaining life management apparatus 40 according to the first embodiment includes the target wave generator 302 for generating the target waveform for sliding the cylinder of the vibrator 1.
The target switching circuit 37 that switches detection signals from the acceleration sensor 38 and the displacement sensor 39 that detect the sliding amount of the cylinder, and the target of the integration process in the seal remaining life determination process is switched between the target wave and the response wave (detection wave). With the waveform switching circuit 35, the control unit 41 integrates the sliding amount of the cylinder of the vibration exciter 1 in one vibration test based on the waveform data and adds it to the total sliding amount. It is configured to determine whether or not the value has reached a predetermined set value. The seal remaining life management device 40 is
When the determination result exceeds the threshold value, the alarm generation unit 45 outputs an alarm and the alarm data is displayed on the display unit 46.

Therefore, according to the seal remaining life management device 40 in the first embodiment, the user does not perform the open disassembly inspection of the vibration exciter 1, and the intuition and experience of the inspector or the vibration exciter. The remaining life of the seal of the vibration exciter 1 can be managed with high accuracy without depending on the operating time. Further, when the target wave is used as the waveform to be integrated, it is possible to perform a simulation prediction of the sliding amount before the test, while when the response wave is used, the accurate sliding amount of the cylinder is integrated so that the accuracy is higher. It is possible to manage the remaining life of the seal.

Further, according to the seal remaining life management device 40 in the first embodiment, when the response wave is used, it can be applied to the vibration exciter 1 having either the acceleration sensor 38 or the displacement sensor 39. It is also possible to retrofit the seal remaining life management device 40 to an existing shaker that has already been delivered to the user and is currently in operation.

The processing for managing the seal remaining life of the vibration exciter according to the first embodiment can be configured as a program for realizing the function, and the program is recorded in a computer-readable recording medium. By doing so, it is possible to provide the user with the seal remaining life management processing program of the vibration exciter as a recording medium. Also,
The program can be provided to the user by downloading it from the web (WWW) via a communication circuit such as the Internet.

(Embodiment 2) With reference to FIGS. 9 to 12, an embodiment of a server-client system including a seal remaining life management device for a vibration exciter according to the present invention will be described in detail. First, the configuration will be described. FIG. 9 is a conceptual diagram showing an example of a general server-client system using the Internet. In this example, one server 91
Is connected to three clients 92, 93, and 94 via the Internet 90, which is a communication line. These clients are respectively installed on the user side of the vibration exciter 1, and are configured to include the above-described various components of FIG. Therefore, in the second embodiment, description of the components of the client is omitted,
It is assumed that the various constituent elements shown in FIG. 4 are used when explaining the operation.

FIG. 10 is a schematic block diagram showing the configuration of the server 91 (reference numeral 100 in FIG. 10) of FIG.
In FIG. 10, the server computer 100 includes a control unit 101, an input unit 102, a RAM 103, and a storage unit 10.
4, the display unit 105, and the communication control unit 106. All the components except the control unit 101 are the control unit 1.
01 by a bus. Although not shown,
The server computer 100 may include other components such as a printing unit.

Similar to the case of the client computer, the description of the general operation of the components of the server computer 100 which are the same as those of FIG. 4 will be omitted here.
Only characteristic parts of the second embodiment will be described.

The control unit 101 executes various processing programs executed by the server computer 100 such as a seal remaining life determination process (FIG. 11) which will be described later and which is stored in a storage medium (not shown) in the storage unit 104. The processing result is stored in the RAM 103 and displayed on the display unit 105. Also, if necessary, these data are output to a printer (not shown) or the like for printing.

The communication control unit 106 is a wide area communication line (wireless or wired) such as the Internet shown in FIG.
And has a communication control function for transmitting and receiving various commands and various data to and from the client computer via this communication line.

Next, the operation of this server-client system will be described. FIG. 11 shows a server computer (hereinafter referred to as “server”) 100 and a client computer (hereinafter referred to as “server”) according to an embodiment of the present invention.
"Client". 4) is a flowchart of a seal remaining life determination process executed by (1). Here, the client computer (hereinafter referred to as reference numeral 40) has a configuration similar to that of the seal remaining life management device 40 of FIG. 4 described above, and this flowchart will be described using each component of FIGS. 3 and 4. To do.

The client 40 slides the cylinder of the vibration exciter 1 to vibrate the vibrating body, as in the seal remaining life determination process of FIG. 7 (step S31). At this time, in the client 40, a target waveform for sliding the vibration exciter 1 is input via the input unit 42, and the amount of sliding of the cylinder of the vibration exciter 1 that slides based on this target waveform is detected by the acceleration sensor. 38 and the displacement sensor 39, and the data thereof are stored in the RAM 43 and the storage unit 44. Then, the client 40 transmits various data (target waveform data, detected acceleration data, detected displacement data, etc.) stored in the RAM 43 to the server 100 via the communication control unit 47 (step S32).

The server 100 receives the various data transmitted from the client 40 via the communication control unit 106 (step S33), and sends these data to the RA.
Store in M103. The detected acceleration data is converted into displacement data by integrating twice in the client 40 or the server 100. And
The control unit 101 executes a predetermined integration process shown in FIG. 8 (step S34) and stores the data obtained by this process in the RAM 103.

In step S35, the control unit 101
Determines whether or not the total sliding amount accumulated in the accumulation process and stored in the RAM 103 is less than or equal to a preset threshold value. Then, the control unit 101, when it is not less than or equal to the threshold value, sends the data representing the alarm signal to the RAM 10
3 (step S36), and when it is less than or equal to the threshold value, the various data stored in the RAM 103 is transmitted to the client 40 via the communication control unit 106 (step S37). Then, the control unit 101
Displays various data stored in the RAM 103 on the display unit 10.
5 and stores it in a predetermined storage destination of the storage unit 104 (step S42), and the processing of the server 100 ends.

Here, in step S42, the display unit 1
An example of the display screen displayed on 05 is shown in FIG. Figure 1
2 is an example of a seal remaining life management screen of the server computer 100 according to the embodiment of the present invention. In this figure, for example, it is shown that the vibrator of the A factory slid beyond the sliding limit distance of the cylinder, and the determination result corresponding to step S35 is displayed as x. For this reason, when the factory A is the client when executing the present seal remaining life determination processing, the server 100 transmits data representing the alarm signal to the client A factory A.

Next, the client 40 makes the server 10
Various data transmitted from 0 (calculated total sliding distance,
The one-time sliding distance, the number of times vibration can be performed, the determination result, and the like are received via the communication control unit 47 (step S3).
8) Store those data in the RAM 43.

In step S39, the control section 41
It is determined whether or not there is data representing an alarm signal in the received various data. When the data is present, the control unit 41 causes the alarm generation unit 45 to output an alarm (step S40), stores these data including the alarm signal data in a predetermined storage destination of the storage unit 44, and displays the data. Part 46
Is displayed (step S41), and the processing of the client 40 ends. If there is no alarm signal data, the control unit 41 proceeds directly to step S41,
These various data are stored in a predetermined storage destination of the storage unit 44, are displayed on the display unit 46, and the process is ended.

As described above, the server-client system according to the second embodiment sends the detection data when the cylinder of the vibrator 1 is slid by the client and the target waveform data at that time to the server, and The server 100 performs the sticker remaining life determination process that was performed by the sticker remaining life management device 40 in the first embodiment, sends the result to the client, and displays the result on the display unit 46 of the client. When the threshold is exceeded, the alarm generator 45 is configured to generate an alarm.

Therefore, in the server-client system according to the second embodiment, the server 100
Since it is possible to provide the user of the shaker 1 on the client side with information regarding the remaining life of the seal of the shaker, the user does not have to perform the overhaul inspection of the shaker 1 and the operator's intuition. The remaining life of the seal of the vibration exciter 1 can be managed with high accuracy, without depending on the experience or the operating time of the vibration exciter.

Further, the maker of the shaker 1 on the server side can grasp the usage status of each cylinder of the shaker 1 on each client side by using the server-client system. It is possible to centrally manage the usage status of the vibration exciter 1 delivered to the user and the remaining life of the seal of the cylinder at the factory or business office. Therefore, the manufacturer can advise the user of the vibration exciter 1 having exceeded the total sliding distance of the cylinder to replace the seal.

In the second embodiment, the integration process shown in FIG. 8 is performed on the server side. However, as in the first embodiment, the integration process is performed on the client side and the integration result is transmitted to the server. May be That is, step S34 may be moved before step S32.

[0092]

According to the apparatus and method for managing the remaining life of the vibration exciter according to the present invention, the inspector's intuition and experience or the operation of the vibration exciter can be performed without performing overhaul of the vibrator. It is possible to manage the seal life of the vibrator with high accuracy without depending on time.

Further, according to the seal remaining life management server of the present invention, since the usage status of each cylinder of the vibrator on each client side can be grasped, the seal remaining life of that cylinder can be centrally managed. In addition to being able to do so, it is possible to provide cumulative data to each client.

[Brief description of drawings]

FIG. 1 is a side view of a vibrator to which a seal residual life management device for a vibrator according to an embodiment of the present invention is applied.

FIG. 2 is a cross-sectional view of a vibration exciter according to an embodiment of the present invention.

FIG. 3 is an overall system diagram of a control device for an exciter to which the present invention is applied.

FIG. 4 is a schematic block diagram of a seal remaining life management device for a vibration exciter according to an embodiment of the present invention.

FIG. 5 is an example of a target waveform for a cylinder displacement generated by a target wave generation circuit according to an embodiment of the present invention.

FIG. 6 is an example of a seal remaining life management screen of the vibration exciter displayed on the display unit in the embodiment of the present invention.

FIG. 7 is a flowchart of a seal remaining life determination process executed by the seal remaining life management device according to the embodiment of the present invention.

FIG. 8 is a flowchart of preset integration processing executed in steps S10 and S34 of the seal remaining life determination processing of FIGS. 7 and 11.

FIG. 9 is a conceptual diagram showing an example of a server-client system using the Internet.

FIG. 10 is a schematic block diagram showing the configuration of the server of FIG.

FIG. 11 is a flowchart of a seal remaining life determination process executed by the server computer and the client computer according to the embodiment of the present invention.

FIG. 12 is an example of a sticker remaining life management screen of the server computer according to the embodiment of the present invention.

[Explanation of symbols]

1 shaker 2 walls 3 vibrating body 11 outer cylinder 12 piston rod 13 Seal ring 14 Servo valve 31 Control device 32 Target wave generator 33 Feedback arithmetic processing circuit 34 amplifier circuit 35 Waveform switching circuit 36 amplifier circuit 37 Target switching circuit 38 Accelerometer 39 Displacement sensor 40 Seal remaining life management device 41 Control unit 42 Input section 43 RAM 44 memory 45 Alarm generator 46 Display 47 Communication control unit 100 server computer 101 control unit 102 Input section 103 RAM 104 memory 105 display 106 communication control unit

Claims (23)

[Claims] 1. A seal remaining life management device for a vibration exciter for managing the life of a seal applied to a cylinder of a vibration exciter for vibrating a vibrating body, wherein a target waveform for sliding the cylinder is set. Target wave generating means to be generated, detection means for detecting the sliding amount of the cylinder, and the present sliding amount is integrated based on the waveform detected by the detecting means, and the integrated result is the total sliding amount before that. A sliding amount integrating means for adding, and a determining means for determining the life of the seal based on whether the integrated result of the sliding amount integrating means has reached a predetermined set value or not. A seal remaining life management device for shakers. 2. The waveform detected by the detection means is either a target waveform generated by the target wave generation means or a response waveform detected from the cylinder sliding based on the target wave, The seal pre-life management device for a vibration exciter according to claim 1, wherein the device further comprises waveform switching means for switching between the target wave and the response wave. 3. When the detection means detects the response waveform, the detection target is either acceleration or displacement of the cylinder, and the device switches between acceleration and displacement of the cylinder as the detection target. The seal pre-life management device for a vibration exciter according to claim 2, further comprising detection target switching means. 4. A prediction is made by subtracting the total sliding amount accumulated by the sliding amount accumulating means from the predetermined set value and dividing the result by the sliding amount of the cylinder in a predetermined one-time excitation. The seal pre-life management device for a vibration exciter according to any one of claims 1 to 3, further comprising calculation means for calculating the number of possible vibrations. 5. A display means for displaying the total sliding amount accumulated by the sliding amount accumulating means and / or the judgment result by the judging means is further provided.
A seal pre-life management device for a vibration exciter according to claim 4. 6. A display means is further provided for displaying the predicted number of possible vibrations calculated by the calculation means, the total sliding amount accumulated by the sliding amount accumulating means and / or the judgment result by the judging means. 5. The method according to claim 4, wherein
The pre-life management device for the vibration exciter described in. 7. The display means displays an expected arrival schedule for the preset set value based on the total sliding amount accumulated by the sliding amount accumulating means and the usage status of the cylinder. The seal pre-life management device for a vibrator according to claim 5 or 6. 8. An alarm that outputs an alarm signal indicating that the seal life of the vibrator has been exceeded when it is determined that the determination result by the determination means has reached the predetermined threshold value. The seal pre-life management device for a vibration exciter according to claim 1, further comprising a signal output means. 9. A seal remaining life management method for a vibration exciter for controlling the life of a seal applied to a cylinder of a vibration exciter for vibrating a vibrating body, wherein a target waveform for sliding the cylinder is set. The step of generating, the step of detecting the sliding amount of the cylinder, the step of integrating the sliding amount of the cylinder this time based on the detected waveform, and the step of adding the integrated result to the total sliding amount before that, A seal remaining life management of the vibration exciter, which comprises a step of judging the life of the seal based on whether or not the integrated result obtained in the sliding amount integration step has reached a predetermined set value. Method. 10. The waveform detected in the detecting step is either a target waveform generated in the generating step or a response waveform detected from the cylinder sliding based on the target wave, The seal pre-life management method for a vibration exciter according to claim 9, further comprising a step of switching between the target wave and the response wave before the detecting step. 11. When the response waveform is detected in the detection step, the detection target is either acceleration or displacement of the cylinder, and the acceleration and displacement of the cylinder are detected as the detection target before the detection step. 11. The seal pre-life management method for a vibration exciter according to claim 10, further comprising a step of switching between and. 12. A computer for controlling the life of a seal applied to a cylinder of a vibration exciter for vibrating a vibrating body, and a target wave generating means for generating a target waveform for sliding the cylinder. A detecting means for detecting the sliding amount of the cylinder, a sliding amount integrating means for integrating the current sliding amount based on the waveform detected by the detecting means, and adding the integrated result to the total sliding amount before that, A seal remaining life management program for a vibrator for functioning as a judgment means for judging the life of a seal based on whether or not the integrated result of the sliding amount integration means has reached a predetermined set value. 13. The waveform detected by the detection means is either a target waveform generated by the target wave generation means or a response waveform detected from the cylinder sliding based on the target wave, The seal remaining life management program for a vibration exciter according to claim 12, further comprising a program code for causing a computer to function as a waveform switching unit that switches between the target wave and the response wave. 14. When the detection means detects the response waveform, the detection target is either the acceleration or the displacement of the cylinder, and the computer detects the acceleration and the displacement of the cylinder as the detection target. 14. The seal remaining life management program for a vibration exciter according to claim 13, further comprising a program code for causing it to function as target switching means. 15. A computer-readable recording medium recording a seal remaining life management program for a vibration exciter according to claim 12, which is to be executed by a computer. 16. A seal remaining life management server of a vibration exciter for managing the life of a seal applied to a cylinder of a vibration exciter in a client for vibrating a vibrating body, which is transmitted from the client. , A receiving means for receiving detection data detecting a sliding amount when the cylinder of the vibrator is slid, and a sliding amount of this time are integrated based on the detection data received by the receiving means, and the integrated result Sliding amount accumulating means for adding to the total sliding amount before, and a judging means for judging the life of the seal based on whether or not the integrated result of the sliding amount accumulating means has reached a predetermined set value. Transmitting means for transmitting the integration result accumulated by the sliding amount integrating means and the determination result determined by the determining means to the client. Machine seal remaining lifetime management server. 17. A seal remaining life management server of a shaker for managing the life of a seal applied to a cylinder of a shaker in a client for exciting a vibrating body, which is transmitted from the client. , The detection data obtained by detecting the sliding amount when the cylinder of the vibration exciter slides, and the current sliding amount based on the detected data are integrated, and the integrated result is added to the previous total sliding amount. Receiving means for receiving the obtained integration result, determining means for determining the life of the seal based on whether or not the integration result received by the receiving means has reached a predetermined set value, and And a transmission unit that transmits the integration result accumulated by the motion amount integrating unit and the determination result determined by the determination unit to the client. The remaining service life management server. 18. The display device according to claim 16, further comprising display means for displaying the integration result and the determination result of each client for each client or collectively.
A seal remaining life management server for the vibration exciter according to 7. 19. When it is determined that the determination result by the determining means has reached the predetermined threshold value, an alarm signal indicating that the seal life of the vibrator has been exceeded is sent to the client. The seal pre-life management server for a vibration exciter according to any one of claims 16 to 18, further comprising alarm signal output means for outputting. 20. A seal remaining life management server computer of an exciter is transmitted from the client for managing the life of a seal applied to a cylinder of the exciter in a client for exciting a vibrating body. Receiving means for receiving detection data that detects the amount of sliding when the cylinder of the vibrator is sliding, integrating the sliding amount of this time based on the detection data received by the receiving means, and the integration result Sliding amount accumulating means for adding to the total sliding amount before that, judging means for judging the life of the seal based on whether or not the accumulation result of the sliding amount accumulating means has reached a predetermined set value, A vibrating machine for functioning as a transmitting means for transmitting the integrated result accumulated by the motion amount integrating means and the determination result determined by the determining means to the client. Seal remaining lifetime management program. 21. A seal remaining life management server computer of an exciter for managing the life of a seal applied to a cylinder of an exciter in a client for exciting a vibrating body, transmitted from the client. According to the detection data obtained by detecting the sliding amount when the cylinder of the vibrator is slid, the present sliding amount is integrated based on the detection data, and the integrated result is added to the total sliding amount before that. Receiving means for receiving the integrated result obtained as a result, determining means for determining the life of the seal based on whether or not the integrated result received by the receiving means reaches a predetermined set value, the sliding amount A vibrating device seal for functioning as transmitting means for transmitting the integrated result integrated by the integrating means and the determination result judged by the judging means to the client. Life management program. 22. A program code for causing a seal remaining life management server computer of an exciter to function as a display unit for displaying the integrated result and the determination result of each client for each client or collectively. The seal remaining life management program for a vibration exciter according to claim 20 or 21. 23. A computer-readable recording medium in which the program according to any one of claims 20 to 22 to be executed by a computer is recorded.