JP2009068960A - Vibrator and vibrating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibrating method reproducing traveling state that is difficult or impossible to be reproduced with a method of vibrating only a single wheel. <P>SOLUTION: A vibration device for reproducing vibration state of wheels during traveling by vibrating a wheel T in a stop state of a vehicle, comprises a first vibrating means Sm and a second vibrating means Ss for vibrating wheels T. The first vibrating means Sm and the second vibrating means Ss are arranged in two wheels located in a diagonal line direction, out of four wheels, and the first and second vibrating means are operated in synchronization with each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an improvement in a method and an apparatus for reproducing a vibration state of a vehicle while the vehicle is running in a state where the vehicle is stopped.

  When abnormal noise is generated from the vehicle body while the vehicle is running, it is necessary to first identify the location where the abnormal noise is generated. For that purpose, it is ideal to travel on the road surface where the noise is generated under the same condition as when the noise is generated. However, it is not realistic to travel on the road repeatedly until an abnormal noise occurrence location can be identified. Also, depending on the location of the abnormal noise, it may not be possible to identify from the passenger compartment during traveling.

  In view of this, a method has been proposed in which a situation where an abnormal noise has occurred is reproduced at a maintenance factory or the like to identify the abnormal noise occurrence location.

  For example, Patent Literature 1 discloses a vibration device for reproducing a traveling state in which abnormal noise occurs.

  This vibration device has a carriage, a vibration arm that is swingably held on the carriage, and an actuator that is attached to the carriage and the vibration arm so as to be extendable and contractible. The vibration arm carries a vehicle wheel. A plate member to be placed, and an arm member connected to the plate member, and pivoting the substantially center of the vibration arm to one bracket of the carriage and pivoting the base end of the actuator to the other bracket of the carriage The other end is pivotally attached to the end of the arm member.

And the state when abnormal noise generate | occur | produces is reproduced by applying the vibration of the frequency which the operator selected to the wheel mounted in the plate member.
Japanese Patent No. 2784774

  However, such a conventional vibration device has an abnormal sound generation state that cannot be reproduced. In other words, in a configuration in which vibration is input only to one wheel as in the case of a conventional vibration device, it is difficult to reproduce a running state in which the vehicle body is in a twisted state, for example, and therefore, a difference caused by the torsion of the vehicle body is difficult. With regard to sound, there was a problem that it was not always possible to reproduce the state when it occurred.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an apparatus and a method that can reproduce a traveling state that cannot be reproduced by a conventional vibration apparatus.

  The present invention is applied to a vibration apparatus and a vibration method for a vehicle that vibrates wheels while the vehicle is stopped in order to reproduce the vehicle state during traveling.

  In addition, the first and second vibration means provided as at least two wheels in the diagonal direction among the four wheels as the vibration means may be provided, and the first and second vibration means may be operated in synchronization. At least first and second vibration means are used as the vibration device and the vibration means, and the first and second vibration means are arranged on two wheels in the diagonal direction of the vehicle and are synchronized with each other. It was characterized by being a vibration method to be operated.

  According to the present invention, since the two wheels in the diagonal direction are vibrated, it becomes possible to reproduce a vehicle state that cannot be reproduced when one wheel is vibrated, and further, the two vibration means are synchronously excited. Therefore, the effect that various vehicle states can be reproduced accurately and easily is obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a plan view showing an example of a vibration device S as a vibration means used in the present embodiment, and FIG. 2 is a view taken along the line AA in FIG. Since the configuration and operation of the vibration exciter S are basically the same as those of the vibrator disclosed in Japanese Patent No. 2784774, only the outline will be described.

  The vibration device S includes a vibration plate 1 on which a vehicle wheel is placed, a vibration cylinder 2 that is connected to the vibration plate 1 via a link member 5 and moves the vibration plate 1 up and down by hydraulic pressure, and a control circuit that will be described later. And a hydraulic servo 11 that switches the hydraulic pressure of the vibration cylinder 2 in accordance with the frequency from.

  The link member 5 is formed in an angle shape and is rotatably connected to the base frame 10 of the vibration device S by the support pin 7 in the vicinity of the bent portion. And the vibration plate 1 is provided in the one end 5a side, and it connects with the rod body 3 and the connection pin 6 of the vibration cylinder 2 so that rotation is possible on the other end 5b side.

  The vibration cylinder 2 includes a cylinder body 4 connected to a hydraulic power source (not shown) via a hydraulic servo 11, and a rod body 3 slidably inserted into the cylinder body 4. The rod body 3 is described above. Thus, the base end of the cylinder body 4 is rotatably connected to the base frame 10 of the vibration exciter S and the connecting pin 8.

  When a vehicle wheel is placed on the vibration plate 1 of the vibration device S configured as described above and the vibration cylinder 2 is operated, the rod body 3 moves back and forth with respect to the cylinder body 4. The link member 5 connected to the rod body 3 swings around the support pin 7 as a swing shaft. Thereby, vibration can be applied to the wheel placed on the vibration plate 1.

  Reference numeral 9 denotes a moving wheel. The moving wheel 9 is used when the vibration device S is moved to the work place or moved to the storage place after the work is finished. When used, the moving wheel 9 is attached to the base frame 10 of the vibration device S by the bolt 12. Remove when finished mounting and moving.

  In this embodiment, the vibration exciter S having the above-described configuration is provided on two wheels T that are diagonal when the vehicle A is viewed from above as shown in FIG. The devices S are operated in synchronism with each other. Here, “synchronized operation” includes synchronizing the timing of changing the frequency and amplitude of the vibration to be excited in addition to the timing of starting and stopping the vibration.

  Next, a system configuration for synchronously operating the two vibration exciters S will be described with reference to FIG.

  This system has two vibration devices S (the main vibration device S is the main vibration device Sm, and the sub vibration device S is the sub vibration device Ss). , Hydraulic source P (the main hydraulic source Pm is used for the vibration device Sm and the sub hydraulic pressure source Ps is used for the vibration device Ss), and the controller C (the main controller Cm is used for the vibration device Sm and the sub device is used for the vibration device Ss. A controller Cs), and a remote controller RC as an operation means (the main remote controller RCm for the vibration device Sm and the sub remote controller RCs for the vibration device Ss).

  The main controller Cm and the sub controller Cs are installed in the casings of the main hydraulic power source Pm and the sub hydraulic power source Ps (respectively described in FIG. 4), and perform various settings for abnormal noise reproduction work. A control panel CP is provided on the outer surface of the housing.

  The control panel CP has an emergency stop button for stopping vibration immediately and stopping the pump of the hydraulic power source P during operation, a monitor lamp indicating the power on / off state, and an alarm indicating a warning state such as an emergency stop. Display, button for resetting the alarm display, button for operating the pump of the hydraulic power source P, monitor lamp for indicating the operation state, button for adjusting the height of the vibration plate 1, generated by the vibration device S A switch for selecting an excitation waveform to be performed, a dial for setting a duty ratio when an arbitrary rectangular wave to be described later is selected as the excitation waveform, and the like are provided. As the excitation waveform, a sine wave, a triangular wave, a square wave, or an arbitrary rectangular wave can be selected.When an arbitrary rectangular wave is selected, for example, by changing the duty ratio, the push-up time is long and the sink time is Various vibrations such as a short vibration and a vibration with a short push-up time and a long sinking time can be reproduced.

  The control panel CP also includes a synchronous operation panel provided with an INT / EXT changeover switch 33 described later and a terminal for connecting a synchronous operation signal transmission / reception cable. The main controller Cm is provided with a synchronous operation IN terminal 38, a synchronous operation OUT terminal 39 and an in-phase / reverse phase switching switch 34 (phase switching means), and the sub controller Cs is provided with only a synchronous operation IN terminal 40. The in-phase / reverse phase switching switch 34 may be provided in the main remote controller RCm.

  Then, the synchronization signal terminals of the main controller Cm and the sub-controller Cs are connected by cable. In addition to the synchronous operation signal, the vibration start / stop signal, the operable state signal, the warning signal, the hydraulic pump operation / stop signal, and the like are also connected by cables so that they can be transmitted and received between the controller Cm and the controller Cs.

  The main remote controller RCm and the sub remote controller RCs are cable-connected to the main controller Cm and the sub controller Cs, respectively, so that an operator can bring the main remote controller RCm and the sub remote controller RCs into the vehicle interior during abnormal sound reproduction work. A monitor lamp, a frequency setting button for vibration generated by the signal generator 31 to be described later, an amplitude setting button for vibration generated by the signal generator 31, a preparation button for putting the vibration plate 1 into a work start state, an excitation start / A stop button, a vibration condition reset button, a frequency increase / decrease speed setting button, and the like are provided. The preparation button is a button for moving the vibration plate 1 to the center position of vibration to be generated at the start of work, and the state moved to this center position is referred to as a preparation state.

  Next, the configuration of the main controller Cm and the sub controller Cs will be described.

  The main controller Cm receives a signal from the main remote controller RCm through the remote control interface 32. And according to the signal which the remote control interface 32 received, the signal generator 31 generates the vibration waveform signal according to the vibration start / stop signal of the vibration exciter Sm and the vibration to be generated. The vibration waveform signal generated by the signal generator 31 is transmitted to the servo amplifier 37 when the INT side is selected by the INT / EXT selector switch 33, and drives the hydraulic servo 11 based on the signal. When the EXT side is selected by the INT / EXT selector switch 33, the signal from the main remote controller RCm is not transmitted to the servo amplifier 37. That is, the main vibration controller Sm cannot be operated with the main remote controller RCm.

  When the EXT side is selected, the synchronous operation IN terminal 38 provided on the synchronous operation panel of the main controller Cm and the servo amplifier 37 are connected. Accordingly, for example, when another vibration device S is added and the vibration device S is provided on the three wheels of the vehicle A, the main vibration device Sm is added as the sub vibration device Ss. The device S can also be used as the main vibration device Sm.

  The vibration waveform signal emitted from the signal generator 31 is also sent to the synchronous operation OUT terminal 39 via the in-phase / reverse-phase switching switch 34, and is output from here to the sub-controller Cs via the cable. The

  A signal inverter 35 that inverts the vibration waveform signal generated by the signal generator 31 is interposed in the circuit on the opposite phase side of the in-phase / reverse-phase switch 34, and the in-phase side is selected (same as above). In the phase mode), a signal having the same phase as the vibration waveform signal generated by the signal generator 31 is sent from the OUT terminal 39 for synchronous operation, and when the opposite phase side is selected (the opposite phase mode), the signal generator A signal having an opposite phase to the signal generated at 31 is sent.

  The sub-controller Cs has the same configuration as the main controller Cm with respect to the remote control interface 32, the signal generator 31, the INT / EXT changeover switch 33, the servo amplifier 37, and the IN terminal 40 for synchronous operation. However, a synchronous / asynchronous changeover switch 36 (operation changeover means) is interposed between the sub remote controller RCs and the remote control interface 32, and the in-phase / reverse-phase changeover switch 34 and the signal inverter 35 are not provided. The difference is that it includes an interlock circuit 41 described later.

  When the synchronous side is selected by the synchronous / asynchronous switch 36, the signal from the sub remote controller RCs is not input to the remote control interface 32 of the sub controller Cs. When performing synchronous operation, the sub vibration exciter Ss is operated based on a synchronization signal from the main controller Cm by switching the INT / EXT selector switch 33 of the sub controller Cs to the EXT side.

  The interlock circuit 41 is a circuit that connects and disconnects the remote control interface 32, the warning signal circuits, and the pump drive / stop signal circuits between the main controller Cm and the sub-controller Cs. When the synchronous side (the lower side in FIG. 4) is selected by the / asynchronous switch 36, these circuits are brought into a connected state. When performing synchronous operation, by connecting the remote control interfaces 32 to each other, the vibration start / stop signal input to the remote control interface 32 of the main controller Cm is also sent to the remote control interface 32 of the sub-controller Cs. In addition, a preparation state signal indicating whether or not the sub-vibration device Ss is in a preparation state is sent from the sub controller Cs to the main controller Cm. Further, when one controller C generates a warning signal or a pump operation / stop signal for the hydraulic power source P, these signals are also sent to the other controller C.

  That is, when the synchronous operation time is selected, the sub vibration device Ss operates following the signal from the main remote controller RCm. Further, when any one of the vibrating devices S is brought to an emergency stop, the other vibrating device S is also brought to an emergency stop.

  Next, specific vibration reproduction work will be described.

  First, the user of the vehicle A is inquired about what kind of noise it was, the road surface condition and the running state at the time of the occurrence of the noise, and where the vehicle A originated. Based on the result, the combination of the wheels T to be vibrated is selected, and the vibration waveform, vibration period and amplitude are further selected, and then the vibration is started.

  If the target abnormal noise does not occur, the abnormal frequency is searched for by changing the frequency, amplitude, etc. of the vibration. At this time, as in the present embodiment, the two vibration exciters S are arranged on the two wheels in the diagonal direction of the vehicle A, and are synchronized with each other, so that the single vibration exciter S is reproduced as in the prior art. Vibration that could not be done can also be reproduced.

  For example, when the vibration device S is provided only for one wheel, it is difficult to reproduce the torsional state of the vehicle body, and it is difficult to find abnormal noise caused by the torsion. Therefore, it has been conventionally proposed to reproduce the torsional state by disposing the vibration device S on the two wheels in the diagonal direction, but in reality, for each of the two vibration devices S, the waveform, the frequency, and the There is a problem that the operation becomes complicated because the amplitude and the like must be set.

  Moreover, when synchronizing the operation | movement of two vibration apparatus S, it is necessary to match the timing of a vibration start, but when working alone, two remote controllers RC perform a vibration start operation simultaneously. It is difficult. Even when two people work, it is difficult to match the timing of starting vibration when inputting anti-phase vibrations.

  In this respect, in the present embodiment, various settings of the sub-vibration device Ss can be performed by the main controller Cm and the main remote controller RCm, so that complicated settings and operations are not necessary, and the above-described circuit configuration has the same phase and reverse phase. Regardless of the phase, it is possible to accurately match the timings of starting the vibrations of the two vibration devices S.

  Furthermore, if asynchronous operation is selected by switching the INT / EXT changeover switch 33, the synchronous / asynchronous changeover switch 36, etc., the main vibration exciter Sm and the sub vibration exciter Ss can be operated independently. It is also possible to vibrate only one wheel as in the conventional case.

  As described above, since various vibrations can be reproduced with simple settings and operations, it is possible to efficiently identify an abnormal sound that has been difficult to identify in the past. Moreover, the above work can be performed even when there is only one worker.

  As described above, the following effects can be obtained in the present embodiment.

  (1) In the vibration device that reproduces the vibration state of the vehicle A during traveling by vibrating the wheels T while the vehicle is stopped, the vibration device S that vibrates the wheels T is arranged in at least the diagonal direction of the four wheels. Since they are arranged on two wheels and operated in synchronization with each other, it becomes possible to reproduce vehicle conditions that cannot be reproduced when one wheel is vibrated, or vehicle conditions that are difficult to reproduce, such as torsional conditions. Since the two vibration exciters S can be operated in synchronism, various vehicle states can be reproduced with high accuracy and simple operation.

  (2) In the case of operating the two excitation devices S in synchronization with each other, the in-phase / anti-phase for switching between the in-phase mode for exciting in the same phase and the anti-phase mode for exciting in the opposite phase Since the changeover switch 34 is provided, the phase can be easily switched as compared with the conventional case where the two vibration exciters S are operated independently.

  (3) A synchronous / asynchronous changeover switch 36, a main remote controller RCm, and a sub remote controller RCs are provided. In the case of asynchronous operation, the main vibration device Sm and the sub vibration device Ss are respectively connected to the main remote controller RCm. In the case of synchronous operation with the sub remote controller RCs, the main remote controller RCm operates both vibration exciters S, so it is possible to reproduce various vibrations with simple settings and operations. It is also possible to efficiently identify an abnormal sound for which it was difficult to identify the occurrence location.

  The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.

It is a top view of the vibration apparatus which shows embodiment of this invention. Similarly it is sectional drawing of a vibration apparatus. It is the figure which represented typically the state which deployed the vibration apparatus in the vehicle. It is a system system diagram of a vibration exciter similarly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Excitation board 2 Excitation cylinder 3 Rod body 4 Cylinder body 5 Link member 7 Support pin 9 Moving wheel 10 Base frame 12 Bolt 11 Hydraulic servo 31 Signal transmitter 32 Remote control interface 33 INT / EXT changeover switch 34 In-phase / Reverse phase switching switch 35 Signal inverter 36 Synchronous / asynchronous switching switch 37 Servo amplifier 38 IN terminal for synchronous operation 39 OUT terminal for synchronous operation 40 IN terminal for synchronous operation 41 Interlock circuit

Claims (4)

In a vibration device that reproduces the vibration state of the vehicle while traveling by using vibration means that vibrates the wheels while the vehicle is stopped,
The first and second vibration means provided on at least two diagonal wheels among the four wheels as the vibration means,
A vibration device characterized in that the first and second vibration means can be operated synchronously.   Phase switching means for switching between an in-phase mode in which the first excitation means and the second excitation means vibrate the wheels in the same phase and an anti-phase mode in which the wheels are excited in the opposite phase. The vibration apparatus according to claim 1, further comprising: Operation switching means for switching between a synchronous operation mode in which the first vibration means and the second vibration means are operated in synchronization with each other and an asynchronous mode in which the first vibration means and the second vibration means are operated independently of each other;
First operating means for operating the first vibrating means;
Second operating means for operating the second vibrating means;
With
In the case of the asynchronous operation mode, the first and second vibration means are operated by the first and second operation means, respectively.
In the case of the synchronous operation mode, one of the first and second vibration means is a main vibration means and the other is a sub vibration means, and the first and second vibration means are operated by an operation means for operating the main vibration means. The vibration device according to claim 1 or 2, wherein two vibration means are operated. In the vibration method for reproducing the vibration state of the vehicle while traveling by using the vibration means for vibrating the wheel while the vehicle is stopped,
The vibration method is characterized in that the vibration means is arranged on at least two wheels in a diagonal direction among four wheels and is operated in synchronization with each other.

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