JPH064316Y2 - Excitation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a vibrating device for vibrating an automobile or the like, and in particular, peeling of a spot weld portion that is not affected by the running performance of the automobile by vibrating the automobile. The present invention relates to a vibrating device for investigating a source of low-grade noise such as squeaking noises and chattering noises of a vehicle body which is generated from rattling of an instrument part.

(Prior Art) Conventionally, a vibrating device for vibrating an automobile is designed to directly vibrate the tire of the automobile through a hydraulic servo cylinder controlled by a servo valve and a servo amplifier, thereby supporting the tire and its supporting device. The vehicle body was indirectly vibrated via the.

(Problems to be solved by the present invention) Since this conventional vibration device directly vibrates the tire of the automobile, it needs to vibrate with a large amplitude because it passes through the shock absorber including the spring system and the tire. The equipment itself is large, the space is large, and the servo valve, servo amplifier, and hydraulic servo cylinder require large output, which is expensive and high maintenance cost. Especially, since the servo valve is used, the equipment is expensive and the waste of hydraulic oil can be managed. It was difficult, difficult to handle, and high in maintenance costs.

An object of the present invention is to provide a vibrating device which is small in size, easy to move, does not require a space, can be easily set in a narrow space such as a lower surface of a vehicle body and the ground, and can be easily operated. Especially.

Another object of the present invention is to provide a small-sized and inexpensive vibration device which can directly vibrate a vehicle body of an automobile and uses a hydraulic cylinder having a small amplitude, a small output and a small stroke.

Still another object of the present invention is to provide a vibrating device which does not use a servo valve or a servo amplifier, has a simple and reliable operation, and is easy to handle and easy to handle the dust of hydraulic oil, and is expensive and inexpensive to maintain. Especially.

(Means for Solving the Problem) Therefore, the vibration device of the present invention is provided with a hydraulic cylinder in which a piston member is slidably fitted, and a vibrating portion is loaded on the end of the piston member. In the vibration device that supplies and discharges pressure oil to the cylinder to perform the amplitude operation of the piston member, a base plate that can be installed on the base is provided, and a pair of hydraulic jack cylinders that can be operated synchronously are separated from the plate. And the base plate and the hydraulic jack cylinder are allowed to move relative to each other, a pair of brackets is arranged between the jack cylinders so as to be movable with the jack cylinder, and the hydraulic cylinder is provided between the brackets. A wheel that can travel the base is arranged at the lower end on one side of the bracket while being connected to the bracket so that the wheel can travel on the other side of the bracket. A dollar is projected, and a remote control lever of a hydraulic jack cylinder is provided at the tip of the handle so that it can be easily set in a narrow space such as the underside of the vehicle body and the ground, and can be operated easily. It is characterized by having done.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic side view showing the entire vibrating device (21) of the embodiment of the present invention, and FIG. 3 is an enlarged front view of the device (21) of FIG.
FIG. 4 is a front view of the essential parts showing a state in which the device (21) shown in FIG. 3 is used in an automobile. The vibrating device (21) of the embodiment of the present invention comprises a first load end face (11) and a first load end face (11) which are arranged to face a base (40, the ground in FIG. 4).
The second load end face (12) on the opposite side to the lower surface of the vehicle body of the test vehicle (25) (26, may be a member fixed to the lower surface of the vehicle body)
A double-acting cylinder (20) having a short axial length, including a jig (27) directly connected to the hydraulic cylinder (20).
A high-speed electromagnetic switching valve (19) (19 ') for supplying pressure oil from a hydraulic power source (22) to the high-speed electromagnetic switching valve control device (2
8) and a position sensor (33) for detecting the position of a first piston member described later and inputting a feedback signal (29) to the control device (28). The double-acting hydraulic cylinder (20) is shown in FIG. 2 in a side view in which the hydraulic cylinder (20) of FIG. 1 is rotated 90 degrees counterclockwise for convenience of explanation and a part thereof is shown in a sectional view. The hydraulic cylinder (20) includes a first piston member (9) and a second piston member (10) that are telescopically combined. The first piston member (9) is provided with a second load end surface (12), a medium diameter outer peripheral surface (2), a large diameter outer peripheral surface (1) and an abutting surface (3), which are successively connected, and It has a small-diameter inner peripheral surface (4) inside the medium-diameter outer peripheral surface (2). Small diameter inner peripheral surface (4) is medium diameter outer peripheral surface (2)
It may be provided only on the inner side or the inner side of the large-diameter outer peripheral surface (1). The second piston member (10) has a medium diameter outer peripheral surface (2).
In the embodiment, sliding is performed via a packing or seal ring (both not shown) provided on the medium diameter inner peripheral portion (2 ') and the large diameter outer peripheral surface (1) which can be slidably contacted via the seal (30). A large-diameter inner peripheral surface (1 ') capable of contacting, a contacted surface (3') capable of contacting the contacting surface (3), and a first load end surface (11) following the contacted surface (3 ') are successively arranged, and It has a small-diameter outer peripheral surface (4 ') provided with packing (not shown) or seal ring on the outer periphery so as to be in sliding contact with the small-diameter inner peripheral surface (4). In the large-diameter oil chamber (5) formed inside the large-diameter inner peripheral surface (1 '), the pressure oil of the hydraulic power source (22) passes through the oil passages (8, 8') and the high-speed electromagnetic switching valve ( 19) is supplied / discharged via the small diameter oil chamber (6) formed inside the small diameter inner peripheral surface (4), and the oil passages (7, 7 ') and the switching valve (1) are provided.
Pressure oil is likewise supplied / drained via 9 '). The high-speed electromagnetic switching valve (19) (19 ') is arranged on the outer side surface of the second piston member (10) so that there is no delay in the response of the hydraulic cylinder (20) in the high-speed switching valve. There is.

The position sensor (33) is attached to a sensor support member (33 ') which is movably fixed in parallel to the first piston member (9) in the axial direction, and is attached to the hydraulic cylinder (20).
It saves the axial length of.

Further, the vibrating device (21) is mounted on a pair of hydraulic jack cylinders (14) of the hydraulic jack (13) for adjusting the height of the lower surface of the vehicle body (26 or a member fixed to the lower surface of the vehicle body) with respect to the base (40). It is attached via (15). A pair of hydraulic jack cylinders (14)
Moves each cylinder synchronously and moves the base (4
0) and a base plate (16) capable of abutting. The hydraulic jack (13) has a moving handle (23)
The wheels (24) are integrally provided by being directly fixed to the bracket (15). The hydraulic jack cylinder (14) is supplied with / discharges pressure oil from the hydraulic power source (22) through a manual switching valve (35) and a pipe (36) including a pipe (not shown), and the manual switching valve (35). Remote control lever (35 ') for operating
Is provided on the moving handle (23) so that it can be operated at hand.

On the lower surface (26) of the vehicle body of the test vehicle (25), the vibration device (2
In order to set (1), the moving handle (23) is lifted, the base plate (16) is separated from the base (40), and the vibrating device (21) is attached via the wheel (24) to the vehicle body lower surface (26). After moving to the base (40) directly below and installing the base plate (16) on the base (40), the remote control lever (35 ') is operated and the manual switching valve (35) is opened to apply pressure. Bracket (1) that sends oil to the hydraulic jack cylinder (14), extends the cylinder (14), and moves together with the cylinder (14).
5), the vibration device (21) connected to (15) is driven together,
That is, the hydraulic cylinder (20) is raised and the hydraulic cylinder (20) is attached to the second load end surface (1) on the lower surface of the vehicle body (26 or a member fixed thereto).
The setting is completed by directly connecting 2) via the jig (27). When removing from the underside of the vehicle body (26), use the remote control lever (35 ') to operate the manual switching valve (3
5) is operated to make the jack cylinder chamber communicate with the tank (not shown) of the hydraulic power source (22), the contraction force of the spring (44) incorporated in the jack cylinder (14) causes the jack cylinder (14). Contracts, and the vibrating device (21) is lowered to the original position shown in FIG.

According to the present invention, the lower surface (26) of the body to be excited and the vibrating device (21) are detachably fitted to the second load end surface (12) so that the exciter (21) can be attached and detached with one touch. A spacer (36, FIG. 5) provided with (42),
Attachment (3) having engaging part convex part (43) shown in FIG. 6 which can be fitted into spacer (36) concave part (42).
7) and a jig (27) directly connected to each other. The attachment (37) is designed to match at least several types of shapes because the lower surface of the vehicle body (26, or a member fixed thereto), which is the contacted surface, is designed to match at least several types of shapes. The attachment (37 ', 37 ") having the angle (39) and the groove (41) shown in the figure can be easily replaced, and hard rubber or the like can be attached to the upper surface of the attachment so as to be interposed between the attachment surface and the contacted surface. Protective materials (38, 38 ', 38 ") are attached so as not to damage the abutting contact surface of the vehicle body or the like.

In operation, the first piston member (9) of the double-acting hydraulic cylinder (20) of the vibrating device (21) has the lower limit (the position shown in FIG. 2 moved to the right) as shown in the second illustration. It is positioned below the lower surface of the vehicle body (26) as described above in the state of being pulled up to the abutted surface of the lower surface of the vehicle body (26) via the spacer (36) and the attachment (37) by the pair of jack cylinders (14). After being pressed, the pressure oil supplied from the hydraulic pressure source (22) is used as a power source, and the high speed electromagnetic switching valve (19, 19 ') is set to a desired amplitude by the amplitude command from the high speed electromagnetic switching valve control device (28). Amplitude, period, and feedback signal (29) from the position sensor (33)
The position of the first piston member (9) of the hydraulic cylinder (20) is detected and fed back, and the first piston member (9) and, by extension, the lower surface (26) of the vehicle body, which is the contacted surface, are moved up and down to perform a test. The source of low-grade noise such as squeak noise and chatter noise on the surface (25) is investigated.
The oscillating motion of the first piston member (9) is performed at the intermediate position of the stroke so that the high speed switching valve control device (4
5) receives and controls the feedback signal (29).

FIG. 9 shows a mechanical jack (50) instead of the hydraulic jack (13) shown in FIG. The vibrating device (21) has a pair of pivot pins (46), and two pairs of links (47) pivotally attached to each pivot pin (46) at one end (the other pair of links are opposite sides in the drawing). One end (48) of each of the other end pivot parts (48, 48 ') is pivotally fixed on the base plate member (51) and the other end pivot part (48') of the other end pivot part (48 ') is a manual screw device. The base plate member (51) is attached to the base plate member (51) by (49) so as to be movable toward and away from the other end pivot portion (48). Then, when a manual handle (not shown) is attached to the engaging portion (52) and the manual screw device (49) is rotated, the other end pivotally attaching portion (48, 48) comes close to and horizontally moves to the position (48, 48 '). , The pivot pin (46) is raised to the position (46 '), raising the vibrating device (21) to the position (21 ").

(Effect of the Invention) As described above, the vibrating device of the present invention is provided with a base plate that can be installed on a base, and a pair of hydraulic jack cylinders that can be operated in synchronization with the plate are installed upright with a space between them. A cylinder is relatively movable, and a pair of brackets is arranged between these jack cylinders so as to be movable together with the jack cylinder, and the hydraulic cylinder is connected between these brackets so as to be movable together with the bracket. From the set displacement of the hydraulic jack cylinder,
The stroke of the hydraulic cylinder can be made compact, and the hydraulic cylinder itself can be downsized.

On the other hand, this also applies to the hydraulic jack cylinder, and the hydraulic jack cylinder itself can be downsized by the set stroke of the hydraulic cylinder.

Therefore, the hydraulic jack cylinder and the hydraulic cylinder can be downsized, and can be set in a narrow space, for example, between the lower surface of the vehicle body and the ground.

Moreover, since the hydraulic jack cylinder and the hydraulic cylinder are separately arranged, compared to the case where they are superposed in the axial direction, the length and size of the arrangement are avoided, which is narrow as described above. It can be used or set in a space.

In addition, the present invention has a wheel that can travel on the base at the lower end of one side of the bracket, so that it is easy to move, and a long moving handle is projectingly provided on the other side of the bracket. Since the remote control lever of the hydraulic jack cylinder is provided in the part, the vibration control device can be easily set in the narrow space such as between the lower surface of the vehicle body and the ground by using the above handle, and at that time, the remote control lever at hand Operate
There is a practical effect that the hydraulic jack can be easily operated while checking the lifting operation.

[Brief description of drawings]

FIG. 1 is a schematic side view showing the whole of a vibrating device according to an embodiment of the present invention, and FIG. 2 is a view showing the hydraulic cylinder of FIG.
3 is a side view in which the vibration device is rotated by a degree to make a partial cross-sectional view, FIG. 3 is an enlarged front view of the vibration device shown in FIG. 1, and FIG. 4 is a front view of a main part showing a state in which the device shown in FIG. 5 and 5 are enlarged side views in which a part of the spacer shown in FIG. 3 is cut away, and FIG.
Figures 8 to 8 show different (a) side views and (b) top views of the attachment shown in Figure 3, respectively. FIG. 9 is a schematic side view showing a mechanical jack instead of the hydraulic jack shown in FIG. 1, and a two-dot chain line shows a position when the upper part of the jack is raised. 1 ... Large-diameter outer peripheral surface, 1 '... Large-diameter inner peripheral surface, 2 ... Medium-diameter outer peripheral surface, 2' ... Medium-diameter inner peripheral portion, 3 ... Abutting surface, 3 '... Abutted Surface, 4 ... small diameter inner peripheral surface, 4 '... small diameter outer peripheral surface, 9 ...
... first piston member, 10 ... second piston member,
11 ... 1st load end surface, 12 ... 2nd load end surface, 13 ...
... hydraulic jack, 13 '... hydraulic jack cylinder, 1
5 ... Bracket, 16 ... Base plate, 19, 1
9 '... High-speed electromagnetic switching valve, 20 ... Double-acting hydraulic cylinder, 21 ... Exciting device, 22 ... Hydraulic source, 23 ... Movement handle, 24 ... Wheels, 26 ... Vehicle body bottom surface, 27 …
... jig, 28 ... high-speed solenoid valve control device, 29 ... feedback signal, 33 ... position sensor, 33 '... sensor support member, 35 ... manual switching valve, 35' ... remote control lever, 36 ... ... Spacer (jig), 37 ...
Attachment (jig), 40 ... Base, 42 ... Recess (engagement part), 43 ... Convex part (engaged part), 46 ... Pivot pin, 47 ... Link, 48, 48 '... … The other end pivot part, 49 …… manual screw device, 50 …… mechanical jack, 5
1 ... Base plate member.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasutaka Gomei 20 Ishigane Co., Ltd., Toyama City, Toyama Prefecture (72) Inventor Satoshi Ito 20 Ishigane Co., Ltd., Toyama City, Toyama Prefecture (72) Device Toshiyuki Ishizaka 20 Ishigane, Toyama City, Toyama Prefecture Fujikoshi Co., Ltd. (72) Creator Tetsuro Miwa 20 Ishigane, Toyama City, Toyama Prefecture (56) Reference JP-A-60-70332 (JP, A) JP-A-50-40154 (JP, A) Actually opened 58-184643 (JP, U) Actually opened 55-47663 (JP, U) JP-B 47-39427 (JP, B1)

Claims (1)

[Scope of utility model registration request] 1. A piston member, wherein a hydraulic cylinder having a piston member slidably fitted therein is provided, a vibrating portion is loaded on an end portion of the piston member, and pressure oil is supplied to and discharged from the cylinder. In a vibrating device for oscillating, a base plate that can be installed on the base is provided, and a pair of hydraulic jack cylinders that can be operated synchronously are erected separately on the plate, and the base plate and the hydraulic jack cylinder are moved relative to each other. And a pair of brackets are provided between these jack cylinders so that they can move together with the jack cylinders.
While connecting the hydraulic cylinder between these brackets so as to be movable together with the brackets, a wheel capable of traveling on the base is arranged at the lower end of one side of the brackets, and a long moving handle is provided on the other side of the brackets. A vibrating device, which is provided so as to project and a remote control lever of a hydraulic jack cylinder is provided at a tip portion of the handle.