JPH11142230A - Mounting device for vibration sensor and vibration measuring method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting device, for a vibration sensor, by which the vibrator sensor is attached easily, which is safe and low-cost, and whose influence on an object to be measured is small, and to provide a vibration measuring method. SOLUTION: A suspension support member 16 which comprises a first arm- shaped part 17 and a second arm-shaped part 18 which are extended, in the same length, to both sides vertically from a frame face is connected to a frame 14 to which a first leg-shaped member 11 and a second leg-shaped member 12 are coupled in an inverted V-shape. A bob 26 is arranged and installed near the lower end of the second leg-shaped member 12. A vibration sensor 32a or the like which detects the vibration of a wall surface W to be measured is placed near the lower end of the first leg-shaped member 11. A part near the end part of the first arm-shaped part 17 and a part near the end part of the second arm-shaped part 18 are suspended and supported by a wire rope 21. The vibration sensor 32a or the like is urged, compression-bonded and attached to the side of a part to be measured, by the balance of the moment of a force due to the bob 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration sensor mounting device for mounting a vibration sensor used for vibration measurement to an object to be measured.
And a vibration measuring method using the vibration sensor mounting device.

[0002]

2. Description of the Related Art As one of inspection methods of a pier of a bridge, vibration of a pier is measured to obtain a natural frequency of the pier.
A method of determining the soundness of the pier based on the numerical values is used. This vibration measurement is performed by attaching a vibration sensor for detecting vibration to a pier, generating vibration by hitting a side wall of the pier with a weight or the like, and measuring the vibration with each vibration sensor.

[0003] In the vibration measurement of the bridge described above,
Since it is necessary to determine the natural frequency of the pier, it is necessary to attach vibration sensors to the upper, middle, and lower sections of the pier, obtain the data of each vibration sensor, and analyze them. In the upper part of the pier, scaffolds for bridge inspection etc. are often provided, so this scaffold can be used, and when installing a vibration isolator, place the vibration isolator on the top end of the pier. Just do it.

[0004] However, when mounting the vibrator in the middle or lower part of the pier, it is necessary to fix the vibrator on the side wall of the pier which is a vertical surface or a substantially vertical inclined surface. Further, in order to detect the vibration of the pier, it is necessary to bring the vibration detecting section of the vibration sensor into close contact with the side wall of the pier. As a method of fixing such a vibration sensor, there are a method using an adhesive (hereinafter, referred to as “adhesion method”) and a method using an anchor bolt (hereinafter, referred to as “anchor bolt method”).

[0005] In addition, as for the method of mounting the vibration isolator on the middle or lower part of the pier, a method of ascending upward from the base side of the pier to reach the mounting position and performing the mounting work, or a top of the pier There are methods of descending from the side and reaching the mounting position to perform the mounting work. These methods include a method using a stepladder or a ladder (hereinafter, referred to as a “stepladder method”), and an automobile dedicated to working at heights. The method used (hereinafter referred to as
It is called the "Aerial Work Vehicle Act." ), A method using a rope ladder (hereinafter, referred to as a “rope ladder method”), a method using an erection scaffold (hereinafter, referred to as an “erection ladder method”), and the like.

[0006]

However, the above-described conventional method of fixing a vibration sensor and the method of mounting the vibration sensor have the following problems.

[0007] (1) In the bonding method, it is necessary to clean the adhesive portion to remove the rough surface (small uneven surface) at the bonded portion. The adhesive strength between them varies. Further, the adhesive needs to be pressed until it is cured (for example, 3 to 5 minutes). Further, after the vibration measurement is completed, it is necessary to peel off the vibration sensor from the side wall of the pier using a tool such as a bar. Thus, various preparatory operations are required before and after the vibration measurement, which is complicated.

(2) According to the anchor bolt method, it is not necessary to perform the cleaning and cleaning of the place where the vibrator is installed, but it is necessary to form an insertion hole for inserting the anchor bolt. Although a power tool such as a vibrating drill is used for drilling, it is necessary to take a reaction force, and a simple work scaffold such as a stepladder or a rope ladder may cause an operator to be in an unstable state, causing a danger of falling. Also, when removing the vibration sensor, just remove the bolt,
The anchor body will be left in the pier body and will damage the pier.

(3) In the stepladder method, the height that can be climbed by a stepladder or a ladder is limited to about 5 m, and there is a risk of a fall or the like when trying to climb a place higher than that with a stepladder or a ladder. This method is basically used when the base of the pier is a riverbank, a road, or the like. When the base of the pier is running water, it cannot be used if the water depth and the flow velocity are larger than a certain level.

(4) The aerial work vehicle method cannot be used except where the work vehicle can enter the pier base.

(5) The rope ladder method is a method in which a rope ladder is suspended from the top of a pier and work is performed using the rope as a scaffold. The pier position can be accommodated in running water, but for operations that require reaction force, such as drilling work when fixing the vibrator with anchor bolts or stripping work to remove the vibrator fixed with adhesive Workers are likely to be in an unstable state, and there is a risk of falling.

(6) In the erection scaffolding method, a scaffold is directly erected at a place where a vibrator is to be mounted, and this is used to perform a vibrator mounting operation. Depending on the location conditions of the pier, either the construction method from the pier base or the suspension method from the pier top can be selected. However, it takes a lot of labor and days to build and remove, so the cost is high. Although the risk of a crash during the installation of the vibrator is reduced, there is a risk of a crash during the erection and removal of the erection scaffold itself.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to solve the above problems by easily mounting a vibration isolator, being safe, inexpensive, and reducing the cost of an object to be measured. It is an object of the present invention to provide a vibration sensor mounting device and a vibration measuring method which are less affected by the vibration.

[0014]

In order to solve the above-mentioned problems, a vibration-absorbing device mounting apparatus according to the present invention is connected to a frame, near a connection point which is one point on the frame, and has a flat surface in the frame. A hanging support member having a first arm-shaped portion and a second arm-shaped portion extending from both sides of the frame vertically and to the same length, and a weight disposed on the frame, and being vertically or inclined. A vibrating device for detecting vibration of a measured portion on the measured wall surface of the measured object having the measured wall surface is mounted at a position of the frame different from the weight, and an end of the first arm-shaped portion is attached. The portion near the end and the vicinity of the end of the second arm-shaped portion are suspended and supported by a wire, and the vibrator is balanced by the moment of force by the weight around the connection point in the plane of the frame. The vibration sensor is urged toward the measured position to And wherein the mounting and pressed into place.

[0015] In the vibration sensor mounting device, preferably, the frame includes one end of a first leg member extending in one direction and one end of a second leg member extending in another direction. And the frame surface is a plane including the inverted V-shaped portion of the frame, and the weight is connected to the connection point of the second leg-shaped member. Is disposed near the opposite end, and the vibrator is mounted near the opposite end of the first leg-shaped member to the connection point.

Further, in the above-described vibration sensor mounting device,
Preferably, a first pulley is provided near an end of the first arm-like portion, and a second pulley is provided near an end of the second arm-like portion. 1
It is wired so that it passes over the lower part of the second pulley via the lower part of the pulley and then returns upward.

Further, in the above-described vibration sensor mounting device,
Preferably, a first joint rotatable around a first joint axis perpendicular to the frame surface is provided near a connection point of the frame, and the suspension support member is rotatably connected to the first joint. Is done.

Further, in the above-described vibration sensor mounting device,
Preferably, the frame is provided with a second joint rotatable around a second joint axis perpendicular to the frame surface, and the vibration sensor is rotatably connected to the second joint. It is attached to the container holding member.

Further, in the above-mentioned vibration sensor mounting device,
Preferably, the second joint is arranged at a position eccentric from the center of gravity of the vibration sensor holding member, and is configured to assist the close contact of the vibration sensor with the measured position.

Further, in the above-mentioned vibration sensor mounting device,
Preferably, the vibration sensor holding member is a plate member, and the thickness of the plate member is set such that the natural frequency of the vibration sensor mounting device is higher than the natural frequency of the device under test. Is done.

Further, in the above-mentioned vibration sensor mounting device,
Preferably, two or more guide wheels rotatable around a wheel axis perpendicular to the frame surface are provided on the side of the measured portion of the suspension support member, and an auxiliary suspension ring is provided on the frame. When the vibrating device mounting device is moved up and down, the vicinity of the end of the first arm and the vicinity of the end of the second arm are suspended and supported by the wire, and the auxiliary suspension ring is supported by the auxiliary wire. The guide wheel is suspended and supported, and is configured to roll on the measured wall surface.

Further, in the above-described vibration sensor mounting device,
Preferably, on the side of the hanging support member on the side of the frame and on the side of the frame on the side of the hanging support member, the hanging support member and the frame are restricted from moving relative to each other when the vibration sensor mounting device is moved up and down. A regulating means is provided.

In the vibration measuring method according to the present invention, the vibration measuring method may be connected to a frame near a connection point, which is one point on the frame, and may have the same length on both sides vertically from a frame surface, which is a plane in the frame. A frame which is different from the weight, using a suspension support member having a first arm-shaped portion and a second arm-shaped portion which are extended, and a vibration sensor mounting device having a weight disposed on the frame; A vertical or inclined wall surface to be measured by suspending the vibrator at the position of (1) and then suspending the vicinity of the end of the first arm and the vicinity of the end of the second arm by a wire. The vibrator mounting device is supported in the vicinity of a measured point on the measured wall surface of the measured object having
Next, the vibrating device is urged toward the measured position side by balancing the moment of force by the weight around the connection point in the frame plane, and the vibrating device is pressed against the measured position. Then, the vibration of the measured position is detected by the vibration sensor.

[0024]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a view showing a structure of a vibration sensor mounting apparatus according to an embodiment of the present invention. FIG. 1 (A) is a side view, and FIG. 1 (B) is an enlarged side view near a pulley. Are respectively shown. FIG. 2 is a front view of the vibration sensor mounting device shown in FIG. FIG. 3 is a rear view of the vibration sensor mounting device shown in FIG.

As shown in FIGS. 1 to 3, this vibration sensor mounting device 10 basically includes a frame 14 and a suspension support member 1.
6, a vibration sensor holding member 31, and a weight 26.

The frame 14 has a first leg member 11 and a second leg member 12. The first leg-like member 11 is made of steel or the like, and is a rod-shaped or tubular member extending in one direction. The second leg-shaped member 12 is made of steel or the like, and is a bar-shaped or tubular member extending in one direction. The frame 14 is connected to one end of the first leg member 11 and the second leg.
One end of the leg-like member 12 is coupled to the coupling members 13a and 13b by coupling bolts 36, and is formed in an inverted "V" shape as shown in FIG.

A first joint 15 is provided near an apex of the V-shaped portion of the frame 14 (hereinafter, referred to as a "joining point"). The first joint 15
It has a structure in which a cylindrical first joint member (not shown) is inserted through a circular first joint hole (not shown), and the member having the first joint hole or the first joint member has: The frame 14 is rotatable around a first joint axis which is a straight line perpendicular to a plane (hereinafter, referred to as a “frame surface”) formed including the V-shaped portion. The frame 14 is provided with one of the first joint hole or the first joint member described above.

The suspension support member 16 is a substantially "T" -shaped member as shown in FIGS. The first joint hole or the other of the first joint members is provided at the lower end of the vertical portion 16a of the suspension support member 16 and fits with one of the first joint hole or the first joint member provided in the frame 14. In this case, one of the two is rotatably connected to the other.

The vertical portion 16a of the suspension support member 16
From the upper part of the first arm-shaped part 17 and the second arm
An arm 18 extends. The extension length of the first arm portion 17 from the vertical portion 16a is set equal to the extension length of the second arm portion 18 from the vertical portion 16a. Also,
The extending direction of the first arm 17 and the second arm 18 is perpendicular to the frame surface.

With the configuration of the suspension support member 16 as described above, the suspension support member 16 rotates by a predetermined angle clockwise or counterclockwise around the first joint 15 in FIG. It is possible.

The above-mentioned first arm 17 and second arm 18
Has a structure in which a predetermined gap is provided between two plate members and arranged in parallel, as shown in FIG. 1 (B). As shown in FIGS. 2 and 3, a first pulley 19 is provided in a gap near the horizontal end of the first arm 17. As shown in FIGS. 2 and 3, a second pulley 20 is provided in a gap near the horizontal end of the second arm 18.

As shown in FIG. 1B, the second pulley 20 is provided with a second pulley shaft 2 attached to the second arm 18.
It is rotatable around 0a. Second pulley shaft 20a
Are parallel to the frame surface. 1st pulley 1
9 has exactly the same configuration as the second pulley 20, and the first pulley shaft 19 a attached to the first arm 17.
(See FIGS. 2 and 3). First
The pulley shaft 19a is also parallel to the frame surface.

In this case, the first pulley 19 and the second pulley 20
Are arranged symmetrically with respect to the vertical axis of the vertical direction portion 16a of the suspension support member 16. Therefore, the first pulley shaft 19 is moved from the vertical axis of the vertical
The horizontal distance to the center of a is set to be equal to the horizontal distance from the vertical axis of the vertical portion 16a of the suspension support member 16 to the center of the second pulley shaft 20a.

As shown in FIGS. 2 and 3, a first wire entrance 17a is provided near the horizontal end of the first arm 17 at a position obliquely above the first pulley 19. The space in the first arm 17 communicates with the outside. Also,
As shown in FIG. 1B and FIGS. 2 and 3, the second arm 18
A second wire entrance / exit 18a is provided at a position obliquely above the second pulley 20 near the horizontal end of the second pulley 20.
The space inside the arm 18 communicates with the outside.

As shown in FIG. 1B, a wire receiving groove having a semicircular cross section is formed on the outer periphery of the second pulley 20. Although not shown, the first pulley 19 is also provided with a similar wire receiving groove.

As shown in FIGS. 2 and 3, on the side of the first leg-shaped member 11 of the suspension support member 16 (on the side of the measured point),
Near the horizontal end of the first arm 17, a wheel attachment part 22 is attached, and a guide wheel 24 is attached to the wheel attachment part 22. The guide wheel 24 is configured to be rotatable around an axis of a wheel shaft 24a perpendicular to the frame surface. As shown in FIGS. 1 to 3, a wheel mounting portion 23 is mounted on the side of the first leg-shaped member 11 of the suspension support member 16 near the horizontal end of the second arm-shaped portion 18. Part 23
Is provided with a guide wheel 25. Guide wheel 25
Is configured to be rotatable around an axis of a wheel shaft 25a perpendicular to the frame surface.

The first leg member 11 described above is shown in FIGS.
3, near the lower end of the first leg-shaped member 11 opposite to the connection point of the frame 14,
The rod-shaped tip member 11a is connected by a connecting bolt 37. A second joint 30 is provided at the distal end of the distal end member 11a, that is, at the end of the distal end member 11a opposite to the point of connection with the first leg-shaped member 11.

The second joint 30 has a structure in which a cylindrical second joint member (not shown) is inserted into a circular second joint hole (not shown), and has a second joint hole. The member or the second joint member is rotatable around a second joint axis which is a straight line perpendicular to the frame surface. The distal end member 11a is provided with one of the above-described second joint hole or the second joint member.

The vibration sensor holding member 31 is a substantially triangular plate-shaped member as shown in FIGS. One surface of the vibration sensor holding member 31 is provided with the second joint hole or the other of the second joint members, and is fitted to one of the second joint hole or the second joint member provided in the distal end member 11a. One of the two is rotatably connected to the other. Also, the vibration sensor holding member 3
The mounting position of the second joint 30 in FIG. 1 is a position deviated upward from the center of gravity of the vibration sensor holding member 31 in the figure. In addition, below the vibration sensor holding member 31 in the drawing,
A block-shaped auxiliary weight 33 is attached.

With the configuration of the vibration sensor holding member 31 as described above, the vibration sensor holding member 31 moves clockwise or counterclockwise around the second joint 30 in FIG. It is rotatable by a predetermined angle.

At the three corners of the substantially triangular plate-shaped vibration sensor holding member 31, as shown in FIG.
b, 32c are mounted. The vibrators 32a to 32c use the piezoelectric effect (piezoresistive effect) or the like to measure the vibration (displacement acceleration) of the object in contact with the left end (hereinafter, referred to as "vibration detection end") in the drawing. , A sensor that detects the quantity of electricity. A conducting wire or the like for transmitting an electric signal obtained by detecting vibration to a measuring device or the like is connected to each of the vibrators 32a to 32c, but is not shown.

The second leg member 12 described above is shown in FIGS.
3, near the lower end of the second leg-shaped member 12, opposite to the connection point of the frame 14,
A weight 26 is attached. The weight 26 is provided with an annular auxiliary suspension ring 27.

As shown in FIGS. 1A and 3,
An engagement protrusion 34 is attached to the vicinity of the lower end of the vertical direction portion 16 a of the suspension support member 16 in the drawing, that is, the vicinity of the first joint 15 so as to protrude. Further, the vicinity of the upper end of the second leg-shaped member 12 in the drawing, that is, the first joint 15
Locking portions 35a and 35b are attached in the vicinity.

In the vibration sensor mounting device 10 described above, the first leg member 11, the tip member 11a, and the vibrators 32a to 32c sense the direction perpendicular to the long axis of the first leg member 11. The total gravity of the vibrator holding member 31 and the auxiliary weight 33 is F1, the length of the arm of the moment from the position of the center of gravity of the first leg 11 to the joint of the frame 14 is L1, and the second leg is The total gravity component of the second leg-like member 12 and the weight 26 in a direction perpendicular to the long axis of the second member 12 is F2,
When the length of the arm of the moment from the position of the center of gravity of the leg-shaped member 12 to the connection point of the frame 14 is L2, the value of the weight 26 is set so that the following equation is satisfied. F1 x L1 <F2 x L2 ...

The left side of the above equation is the first leg-like member 11 around the joint point (or around the first joint axis) in the frame plane.
This is the moment of the force on the side, that is, the moment of the force for rotating the entire frame 14 in the counterclockwise direction in FIG. The right side of the above equation is the moment of the force on the side of the second leg-like member 12 around the connection point in the plane of the frame, that is, the entire frame 14 is to be rotated clockwise in FIG. The moment of force.

Therefore, the above equation is weighted such that the moment of force around the connection point of the frame 14 of the vibration sensor mounting device 10 in the plane of the frame rotates clockwise in FIG. This indicates that the value of the weight 26 is set.

Next, the operation of the vibration sensor mounting device 10 will be described. First, one end of the wire rope 21 is fixed to an arbitrary position on the inspection scaffold S provided at the top end of the pier P shown in FIGS. 4A and 4B. Here, pier P
Represents an object to be measured for measuring vibration. In FIG. 4, B is a bridge, G is the ground, and W is a pier P.
Are respectively shown.

Next, the other end of the wire rope 21 (hereinafter, referred to as
It is called "adjustment end." 2), as shown in FIG. 2 and FIG. It is wired so as to be pulled out again upward from the second wire entrance / exit 18a.

By doing so, the vicinity of the end of the first arm 17 (the lower left end of the first pulley 19) and the vicinity of the end of the second arm 18 (the lower right of the second pulley 20) are separated. Wire rope 21
Thus, it is possible to stably support. First pulley 19
And the second pulley 20, the vertical portion 16 a of the suspension support member 16
Are arranged symmetrically with respect to the vertical axis of, as shown in FIGS. 2 and 3 and FIG.
It is suspended and supported accurately in a horizontal state without tilting. Also,
At this time, a wire accommodation groove having a semicircular cross section is formed on the outer periphery of the first pulley 19 and the second pulley 20, so that the wire rope 21 does not easily come off.

When the vibrator mounting device 10 is suspended and supported as described above, the vertical or inclined wall surface W to be measured is placed on the side facing the vibration detecting ends of the vibrators 32a to 32c. In a certain case (see FIG. 1A), the entire frame 14 is rotated about the first joint 15 in FIG. 1A by the balance of the moment of the force around the connection point in the plane of the frame. Try to rotate clockwise. By this force, the vibration sensor holding member 31 is urged in a substantially horizontal direction (left direction in FIG. 1B) opposite to the weight 26 side. Therefore, the vibration detecting ends of the vibration sensors 32a to 32c are
It is crimped to the side of the measured wall W to be measured. As a result, the vibration sensors 32a to 32c are attached to the positions to be measured (see FIGS. 1A and 4A). By this action, the vibration detecting ends of the vibration sensors 32a to 32c follow and adhere to each other whether the measured wall surface W is a vertical surface or an inclined surface.

In the vibration sensor holding member 31, the second joint 30 is attached to a position deviated upward from the center of gravity of the vibration sensor holding member 31 in the figure, and the vibration sensor holding member 31 The auxiliary weight 33 is attached to the lower side of the. For this reason, the plane direction of the vibration sensor holding member 31 becomes substantially vertical due to the balance of the moment of the force around the second joint axis. By this action, the vibration detection ends of the vibration sensors 32a to 32c are assisted so as to follow and adhere even better when the measured wall surface W is a vertical surface or an inclined surface.

When the adjustment end of the wire rope 21 (for example, the upper right end in FIGS. 2 and 3) is extended or pulled up, the height position of the entire vibration sensor mounting device 10 on the measured wall surface W of the pier P is determined. Can be adjusted. Thus, the vibration sensors 32a to 32c can be set at the measurement positions at desired height positions where the vibration measurement is desired (FIG. 4).
(See (A) and (B)). At this time, the measured wall surface W of the pier P
When the height position of the position to be measured changes in
Although the inclination angle (see FIG. 4A) and the opening angle (see FIG. 4B) of the wire rope 21 vary, the wire rope 21 is supported by the first pulley 19 and the second pulley 12, and Since the suspension support member 16 is rotatable about the first joint axis, it can follow the change in the angle of the wire rope 21 without any trouble.

After the vibration sensors 32a to 32c have been set at the measurement points by the vibration sensor mounting device 10 as described above, for example, the top end surface or the side wall surface of the pier P is impacted by a heavy impact member. Generate vibration by hitting,
The response at the location to be measured is compared with each of the vibration sensors 32a to 32c.
Measure with

At this time, the vibration sensor holding member 31 described above
The thickness is set so as to be larger than a predetermined value. Thus, the natural frequency of the entire vibration sensor mounting device 10 is a value of 100 Hz or more. Since the natural frequency of the pier P is about 5 to 20 Hz, the configuration described above is designed so that the vibration sensor mounting device 10 does not cause resonance due to vibration at the time of measurement and hinder measurement.

Next, a method of raising and lowering the above-described vibration sensor mounting device 10 on the measured wall surface W of the pier P will be described with reference to FIG.

First, the suspension support member 16 is suspended and supported by the wire rope 21 as described above, and the auxiliary wire rope 28 is attached to the auxiliary suspension ring 27 and suspended. At this time, when the auxiliary wire rope 28 is pulled up and the second leg-like member 12 is pulled up in FIG. 5 around the first joint axis as the rotation center, the engaging projection 34 is fitted between the locking portions 35a and 35b. . Thus, the rotation (mutual movement) of the second leg-shaped member 12 about the first joint axis as the rotation center is temporarily prevented. Engagement projection 34 and locking part 3
5a and 35b constitute regulating means.

In this state, the guide wheels 24 and 25 are pressed against the wall surface W to be measured by balancing the moment of the force around the joint point in the plane of the frame by the weight 26 described above. In this state, if the wire rope 21 and the auxiliary wire rope 28 are simultaneously pulled upward in FIG. 5, the guide wheels 24 and 25 roll on the wall surface W to be measured, and the entire vibration sensor mounting device 10 shown in FIG. It moves without getting caught up. In addition, the wire rope 21 and the auxiliary wire rope 2
8 at the same time as shown in FIG.
5 rolls on the wall surface W to be measured, and the entire vibration sensor mounting device 10 moves without being caught below in FIG. In this manner, the vibration sensor mounting device 1 can be used without rubbing or hooking the vibration sensors 32a to 32c on the wall surface W to be measured.
0 can be easily moved up and down.

Therefore, according to the vibrator mounting device 10 of the present embodiment, the vibration exciter mounting device 10 is connected to the inspection scaffold S at the top end of the pier P which is the object to be measured by the wire rope 21.
Is suspended and temporarily fixed to the position to be measured.
Since vibration measurement is performed using 2a, etc., it is easier to mount a vibration sensor as compared to the conventional method, and there is no danger of a crash due to the absence of ladders or erection scaffolds, and the cost is low. And does not adversely affect the measured object.

Further, according to the vibration sensor mounting device 10 of the present embodiment, the vibration sensor 32a and the like are pressed against the wall surface W to be measured by balancing the moment of the force around the connection point in the frame plane. Therefore, adhesives and anchor bolts, etc. in the conventional method are not required, and in this regard, the mounting of the vibration isolator is easy, and there is no danger of a crash accident because no reaction force is required for the work. The cost is low, and there is no adverse effect on the device under test.

The present invention is not limited to the above embodiment. The above embodiment is an exemplification, and has substantially the same configuration as the technical idea described in the scope of the claims of the present invention. It is included in the technical scope of the invention.

For example, in the above embodiment, the frame (for example, 14) has a first leg-like member (for example, 11) and a second leg-like member (for example, 12) extending in one direction, and is connected in an inverted V-shape. Although an example in which the frame is configured has been described, the present invention is not limited to this, and a frame having another configuration may be used. For example, the first leg-like member and the second leg-like member are formed into a flat plate shape and the whole is formed into a triangular plate-like shape or a fan plate-like shape, and the truss-like shape is formed between the first leg-like member and the second leg-like member. Or a block-shaped or box-shaped member having a frame surface as a plane of symmetry. In short, the frame may be of any configuration as long as it can hold the vibrator and the weight, and can bias the vibrator toward the measured position by balancing the moment of force. It is.

Further, in the above embodiment, the example in which the hanging support member (for example, 16) is formed in a T-shape has been described. However, the present invention is not limited to this. There may be. As an example, a first arm and a second arm having the same length may be directly extended on both sides of a first joint member (not shown) of the first joint (for example, 15).

Further, in the above-described embodiment, an example in which the first pulley (for example, 19) and the second pulley (for example, 20) are provided has been described. However, the present invention is not limited to this example. May not be provided. In short, the vicinity of the end of the first arm (for example, 17) and the second arm (for example, 1)
What is necessary is just to suspend and support the vicinity of the end of 8) by a wire.

Further, in the above embodiment, the example in which the first joint (for example, 15) and the second joint (for example, 30) are provided has been described. However, the present invention is not limited to this example. It does not have to be provided. For example, even in a configuration in which the first joint is not provided and the hanging support member cannot be rotated, the crimping action of the vibration sensor, which is the basic action of the present invention, can be realized. Similarly, even when the second joint is not provided and the vibration sensor holding member cannot be rotated, the crimping operation of the vibration sensor as the basic operation of the present invention can be realized.

Further, in the above-described embodiment, the example in which the vibration sensor holding member (for example, 31) is formed in a plate shape has been described. However, the present invention is not limited to this example, and such a configuration is adopted. You don't have to. The vibration sensor holding member may be, for example, a block shape such as a rectangular parallelepiped shape, a box shape,
It may be a frame structure or the like.

Further, in the above embodiment, an example is described in which the vibration sensor holding member (for example, 31) is eccentrically attached to the second joint (for example, 30) and provided with an auxiliary weight (for example, 33). The invention is not limited to this example,
Such a configuration need not be adopted. As long as the second joint is rotatable, the crimping action of the vibrator as a basic function of the present invention can be realized without taking the configuration of the eccentricity and the auxiliary weight.

Further, in the above embodiment, an example in which the thickness of the vibration sensor holding member (for example, 31) is larger than a predetermined value has been described, but the present invention is not limited to this example.
Such a configuration need not be adopted. Even without this configuration, the crimping operation of the vibration sensor, which is the basic operation of the present invention, can be realized.

In the above embodiment, the guide wheels (for example, 24 and 25), the auxiliary suspension rings (for example, 27), the engagement protrusions (for example, 34), and the locking portions (for example, 35a, 35b)
Has been described, but the present invention is not limited to this example, and these components may not be provided. When these are provided, the guide wheels (for example, 2
4, 25) and an auxiliary suspension ring (for example, 27) alone. Further, the guide wheel only needs to have at least two wheels provided at symmetrical positions of the first arm portion and the second arm portion,
The number is not limited to two, but may be three or more. Further, the attachment position of the auxiliary suspension ring (for example, 27) is not limited to the weight (for example, 26), but is attached to the second leg-like member (for example, 12).
Any position on the top or on the frame (for example, 14).

Further, in the above embodiment, the pier (for example, P) as the object to be measured and the side surface (for example, W) as the wall to be measured have been described, but the present invention is not limited to this example. For example, the device under test may be an abutment or another structure. The wall surface to be measured may be a vertical surface or an inclined surface.

[0071]

As described above, according to the present invention,
A first V-shaped frame is formed by combining a first leg-like member and a second leg-like member extending in one direction, and a first arm-shaped member extending vertically from the frame surface to both sides in the same length. Connecting a hanging support member having a portion and a second arm-shaped portion near a connection point of the frame,
A weight is disposed near the end of the second leg member on the opposite side of the connection point, and a vibration sensor that detects vibration of the vertical or inclined wall surface to be measured is opposite to the connection point of the first leg member. Around the end of the side, the first arm and the end of the second arm are hung and supported by wires, and the moment of force by the weight around the joint in the frame plane is balanced. The vibrating device is urged toward the part to be measured and is attached by crimping, which makes it easy to mount the vibrating device, the mounting work is safe, the cost is low, and the effect on the DUT is low. There is an advantage that there is little.

[Brief description of the drawings]

FIG. 1 is a view showing a configuration of a vibration sensor mounting device according to an embodiment of the present invention, FIG. 1 (A) is a side view, and FIG. 1 (B).
Shows enlarged side views near the pulley.

FIG. 2 is a front view of the vibration sensor mounting device shown in FIG.

FIG. 3 is a rear view of the vibration sensor mounting device shown in FIG. 1;

FIG. 4 is a view for explaining a vibration measuring method using the vibration sensor mounting device shown in FIG. 1;

FIG. 5 is a diagram illustrating a method of lifting and lowering the vibration sensor mounting device illustrated in FIG. 1;

[Explanation of symbols]

 Reference Signs List 10 Vibration sensor mounting device 11 First leg-like member 11a Tip member 12 Second leg-like member 13a, 13b Coupling member 14 Frame 15 First joint 16 Suspension support member 16a Vertical portion 17 First arm portion 17a First wire Doorway 18 Second arm-shaped portion 18a Second wire doorway 19 First pulley 19a First pulley shaft 20 Second pulley 20a Second pulley shaft 20b Wire receiving groove 21 Wire rope 22, 23 Wheel mounting portion 24 Guide wheel 24a Wheel shaft 25 Guide wheel 25a Wheel shaft 26 Weight 27 Auxiliary suspension ring 28 Auxiliary wire rope 30 Second joint 31 Vibration sensor holding member 32a, 32b, 32c Vibration sensor 33 Auxiliary weight 34 Engagement protrusion 35a, 35b Lock portion 36, 37 Coupling bolt B Bridge G Ground P Pier (Measurement object) S Scaffold for inspection W Wall surface to be measured

Claims (10)

[Claims] 1. A frame, and a first arm-shaped portion connected near a connection point, which is one point on the frame, and extending to both sides perpendicularly from a frame surface, which is a plane in the frame, with the same length on both sides. And a hanging support member having a second arm portion,
A weight that is provided on the frame, and a vibrator that detects vibration of a measured portion on the measured wall surface of the measured object having a vertical or inclined measured wall surface is different from the weight. Attach to the position of the frame, the first
The vicinity of the end of the arm portion and the vicinity of the end of the second arm portion are suspended and supported by a wire, and by balancing the moment of force by the weight around the connection point in the plane of the frame. A vibrating device mounting device, wherein the vibrating device is urged toward the measured location and the vibrating device is attached by crimping to the measured location. 2. The vibrator mount according to claim 1, wherein the frame has one end of a first leg extending in one direction and one end of a second leg extending in another direction. The frame surface is a plane including the inverted V-shaped portion of the frame, and the weight is the connection point of the second leg-shaped member. Wherein the vibrator is mounted near an end of the first leg-like member opposite to the connection point. . 3. The vibration damper mounting device according to claim 1, wherein a first pulley is provided near an end of the first arm, and a first pulley is provided near an end of the second arm. 2 is provided with a pulley, and the wire is wired so as to be passed from above to a lower part of the second pulley via a lower part of the first pulley and then returned upward. apparatus. 4. The vibration damper mounting device according to claim 1, wherein a first joint rotatable around a first joint axis perpendicular to the frame surface is provided near a connection point of the frame. The suspension support member is rotatably connected to the first joint. 5. The vibration damper mounting device according to claim 1, wherein the frame is provided with a second joint rotatable around a second joint axis perpendicular to the frame surface. A vibrating device mounting device mounted on a vibrating device holding member rotatably connected to the second joint. 6. The vibration sensor mounting device according to claim 5, wherein the second joint is disposed at a position eccentric from a center of gravity of the vibration sensor holding member, and the vibration sensor is in close contact with the measured position. A vibration damper mounting device characterized in that it is configured to assist the user. 7. The vibration sensor mounting device according to claim 5, wherein the vibration sensor holding member is a plate-like member, and the natural frequency of the vibration device mounting device is higher than the natural frequency of the device under test. The thickness of the plate-shaped member is set so as to be large, too. 8. The vibration sensor mounting device according to claim 1, wherein two or more guides rotatable around a wheel axis perpendicular to the frame surface are provided on a side of the suspension support member at the position to be measured. A wheel is provided, and an auxiliary suspension ring is provided on the frame. When the vibration sensor mounting device is raised and lowered, the vicinity of the end of the first arm and the vicinity of the end of the second arm are the same. A vibrator mounting apparatus, wherein the guide ring is supported by a wire and the auxiliary suspension ring is supported by an auxiliary wire, and the guide wheel rolls on the wall surface to be measured. 9. The vibration damper mounting device according to claim 8, wherein the suspension support member is provided on the side of the frame and the frame on the side of the suspension support member when the vibration mount is moved up and down. A vibration sensor mounting device, further comprising a restriction means for restricting the hanging support member and the frame from moving relative to each other. 10. A frame and a first arm-shaped portion connected near a connection point, which is a point on the frame, and extending to both sides vertically from a frame surface, which is a plane in the frame, to both sides in the same length. And a suspension support member having a second arm-shaped portion, and a vibration sensor mounting device including a weight disposed on the frame, wherein the vibration sensor is mounted at a position of the frame different from the weight. Then, by suspending the vicinity of the end of the first arm and the vicinity of the end of the second arm by a wire, the measured object having a vertical or inclined wall surface to be measured is measured. The vibrator mounting device is supported in the vicinity of a measured position on a wall surface, and then the vibrator is mounted on the frame by balancing the moment of force by the weight around the connection point in the frame plane. Energize the measuring point side to move the vibrator into the measuring point A vibration measuring method, wherein the vibration is detected at the measured position by the vibration sensor.