JP5802477B2 - Noise countermeasure lining board - Google Patents

Description

  The present invention relates to a noise countermeasure lining board.

A lining board is a board mounted on a horizontally installed beam in order to maintain the road surface during underground excavation.
About this lining board, the improvement for giving many noise countermeasures, a noise reduction countermeasure, and a soundproof countermeasure conventionally is made | formed.

JP 2002-167705 A. JP-A-9-328704.

In the lining board which took the conventional noise countermeasure and the muffling countermeasure as described above, there are the following problems.
<1> The premise of the conventional invention is misunderstood.
<2> As shown in FIG. 14, it is assumed that the lining plate is an accurate rectangular plate in both cross-section and plane, and that the beam on which the lining plate is installed maintains an accurate horizontal plane. Because.
<3> However, the lining board is distorted during production, transportation and storage, and is always deformed due to the influence of the load and impact of the automobile in use and the temperature change. There is no lining plate with an accurate rectangular cross section and plane as drawn with a ruler.
<4> On top of that, the H-shaped steel, which is the beam on which the lining plate is mounted, is also curved downward between the columns, so there is also a beam that maintains an accurate horizontal plane as drawn with a ruler. do not do.
<5> Therefore, the lining board actually laid on the road is placed in a three-point supported state on the beam. However, nobody is aware of the actual situation of this three-point support, and a lining plate with an accurate rectangular cross section is mounted on a beam that maintains an accurate plane, that is, “four-point support”. At present, improvements are being made on the premise of.
<6> If you can say that no one was paying attention to “three-point support”, select “summary + claim scope” as “search item” in “publication text search” of the patent digital library. This is because even if a search is performed by inputting “backing board” and “three-point support” as search keywords, only a result of “0 hits” is obtained.
<7> In that respect, the present invention can be said to have been invented on the premise of the actual condition of the lining board actually laid for the first time, that is, the actual condition of three-point support.

In order to solve the above-mentioned problems, the noise countermeasure lining plate of the present invention is a substantially rectangular parallelepiped lining plate formed by an end plate of four laps, an upper surface plate, and a lower surface plate. Assuming that the traveling direction of the vehicle is front and rear, the impact absorber is attached to the lower corner of the front end plate and the upper corner of the rear end plate that hit the adjacent lining plate when the vehicle enters, or the vehicle A shock absorber is attached to the upper corner of the front end plate and the lower corner of the rear end plate where the lining plate descends by hitting and hits the adjacent lining plate, and two types with different heights at the four corners of the lower plate It is characterized in that it is formed by attaching a buffer body.
Alternatively, it is a substantially rectangular parallelepiped lining plate formed by an end plate of four laps and an upper surface plate and a lower surface plate, and when the traveling direction of the vehicle when laid is the front and back, the lining plate descends as the vehicle enters A shock absorber is attached to the lower corner of the front end plate and the upper corner of the rear end plate that strikes the adjacent lining plate, or the front lining plate that hits the adjacent lining plate when the vehicle enters the vehicle is lowered. The shock absorber is attached to the upper corner and the lower corner of the rear end face plate, and two kinds of shock absorbers having different hardnesses are attached to the four corners of the lower face plate.
Alternatively, it is a substantially rectangular parallelepiped lining plate formed by an end plate of four laps and an upper surface plate and a lower surface plate, and when the traveling direction of the vehicle when laid is the front and back, the lining plate descends as the vehicle enters A shock absorber is attached to the lower corner of the right side plate that hits the adjacent lining plate, and the upper corner of the left side plate, or the upper side of the right side plate that hits the adjacent lining plate as the vehicle enters. The shock absorber is attached to the corner and the lower corner of the left side plate, and two types of shock absorbers having different heights are attached to the four corners of the bottom plate.
Alternatively, it is a substantially rectangular parallelepiped lining plate formed by an end plate of four laps and an upper surface plate and a lower surface plate, and when the traveling direction of the vehicle when laid is the front and back, the lining plate descends as the vehicle enters A shock absorber is attached to the lower corner of the right side plate that hits the adjacent lining plate, and the upper corner of the left side plate, or the upper side of the right side plate that hits the adjacent lining plate as the vehicle enters. The shock absorber is attached to the corner and the lower corner of the left side plate, and two types of shock absorbers having different hardnesses are attached to the four corners of the bottom plate.

Since the noise countermeasure lining board of the present invention is as described above, the following effects can be obtained.
<1> A noise countermeasure developed on the assumption that the lining plate is installed in a three-point support state. Therefore, the starting point of development is greatly different from conventional noise countermeasures and muffler countermeasures.
<2> An invention developed by paying attention to the problem that if a wheel rides on a lining plate in a state where one point of the end portion is lifted, the point descends and hits the end surface of the adjacent lining plate. Thus, a noise reduction effect that could not be achieved with a conventional siding board for noise and noise reduction, which is not aware of such a problem, has become possible.
<3> Not only a collision sound with an adjacent lining board, but also a striking sound that hits a beam that is lifted by one point that supports the lining board can be absorbed by a two-stage cushion effect.
<4> Thus, in the lining board of the present invention, the collision sound between the adjacent lining boards and the collision sound between the beam and the lining board can be simultaneously suppressed and reduced. This makes it possible to take very good noise countermeasures.

Explanatory drawing of the installation state of an actual lining board. Explanatory drawing of the action | operation of the lining board at the time of a vehicle passing. Explanatory drawing of the action | operation of the lining board at the time of a vehicle passing. Explanatory drawing of the action | operation of the lining board at the time of a vehicle passing. Explanatory drawing of the action | operation of the lining board at the time of a vehicle passing. Explanatory drawing of the Example of the noise countermeasure lining board of this invention. Explanatory drawing of the arrangement | positioning state of the lining board of this invention. Explanatory drawing of the action | operation of the lining board of this invention. Explanatory drawing of the action | operation of the lining board of this invention. Explanatory drawing of the action | operation of the lining board of this invention. Explanatory drawing of another Example. Explanatory drawing of the Example of a buffer. Explanatory drawing of the other Example of a buffer. Explanatory drawing of the precondition of the conventional invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

<1> Structure of the lining plate.
The lining plate 1 is an approximately rectangular parallelepiped hollow formed by four end faces, that is, a front end face plate 11, a rear end face plate 12, a left end face plate 14, a right end face plate 15, and an upper face plate and a lower face plate 13 that close the upper and lower surfaces thereof. And its basic shape is already commercially available and known.

<2> Operation of the lining plate.
As described above, it is difficult to imagine that the lining plate 1 placed on the beam at the actual site is accurately supported at four points, such as bending of the beam, distortion of the lining plate 1 It can be said that it is in a three-point support state due to deformation. (Figure 1)
That is, one of the four corners is always in a floating state and moves up and down repeatedly as the vehicle passes.
Analysis of the situation in which the vehicle travels on such a three-point supported lining board 1 gives the following operation.
Although the lining plate 1 itself is a simple cubic plate, there is neither “front” nor “rear”, but for the sake of explanation, it will be referred to as “front” and “rear” according to the traveling direction of the vehicle.
Further, for convenience of explanation, it is assumed that the covering plates 1 before and after the three-point supporting covering plate 1 are horizontal and immovable.
Further, since it is complicated to repeat the name of the “three-point supported lining plate 1”, it is referred to as “the lining plate 1”.
In addition, the movement state of the said lining board 1 of a figure is drawn for understanding of description, and is emphasized rather than actually.

<2-1> Getting in the vehicle. (Figure 2)
When the vehicle gets on the lining plate 1, the lining plate 1 is lowered rearward due to the weight of the vehicle w.
Then, the upper corner of the rear end face plate 12 of the lining plate 1 collides with the front end face plate 11 of the rear lining plate 1, and an impact sound is generated.

<2-2> Extrusion and collision by the vehicle.
The lining board 1 is pushed forward as the vehicle w advances. (Figure 3)
In this state, the lower angle of the front end face plate 11 of the lining plate 1 collides with the rear end face plate 12 of the front lining plate 1 and an impact sound is generated. (Fig. 4)

<2-3> Get over the vehicle. (Fig. 5)
Furthermore, the vehicle moves forward and gets over the three-point support axis.
Then, the front of the lining board 1 is lowered.
Therefore, the upper corner of the front end face plate 11 of the cover plate 1 collides with the rear end face plate 12 of the front cover plate 1 and an impact sound is generated.

<3> The lining board of the present invention.
The lining board 1 of the present invention is obtained from the result of analyzing the above three-point support state, and the shape seen from the back of the embodiment is shown in FIG.
That is, the shock absorber 2 is attached to at least the lower corner of the front end face plate 11 and the upper corner of the rear end face plate 12.
Alternatively, the shock absorber 2 is attached to the upper corner of the front end face plate 11 and the lower corner of the rear end face plate 12 symmetrically with the configuration of FIG.
Here, “upper corner” and “lower corner” do not mean a pure “corner” range formed by ridge lines, or an L-shaped range across the ridge line where the top plate and the end plate cross, but a ridge line It means a certain range of the following end face plates.
The shock absorber 2 can employ a block of a known elastic material such as an elastic rubber plate, a bag, a leaf spring, or a coil spring body.
In FIG. 6, two types of buffer bodies 31 and 32 having different heights provided at the four corners of the bottom plate will be described later.

<4> Operation of the lining board of the present invention.
The lining board 1 of the present invention as described above is continuously laid on an H-shaped steel beam 4 as shown in FIG.
Therefore, between the adjacent lining plates 1, the shock absorber 2 is positioned at the upper and lower corners of the end surfaces on the opposite end surfaces.
In that case, due to the torsional deformation of the entire lining plate 1, the unevenness of the end face plate, the actual operation of the suspension work, etc., not only is it supported at three points, but also between the adjacent lining plates 1. As described above, there is a gap of several mm to several tens of mm, and there is no state in which rectangles are neatly arranged on the horizontal beam 4 without a gap as depicted in the design drawing.

<4-1> Getting in the vehicle. (Fig. 8)
When the vehicle gets on the lining plate 1, the lining plate 1 is lowered rearward due to the weight of the vehicle.
Then, the upper corner of the rear end face plate 12 of the lining plate 1 collides with the front end face plate 11 of the rear lining plate 1.
However, the shock absorber 2 is attached to the upper corner of the rear end face plate 12.
The impact absorber 2 can absorb impact sound by being interposed between the lining plate 1 and the rear lining plate 1.

<4-2> Extrusion and collision by the vehicle.
The lining board 1 is pushed forward as the vehicle advances. (Fig. 9)
Then, the lower corner of the front end face plate 11 of the lining plate 1 collides with the rear end face plate 12 of the front lining plate 1.
However, the shock absorber 2 is attached to the lower corner of the front end face plate 11 of the lining plate 1.
The impact absorber 2 can absorb impact sound by being interposed between the lining plate 1 and the front lining plate 1.

<4-3> Get over the vehicle. (Fig. 10)
Furthermore, the vehicle moves forward and gets over the three-point support axis.
Then, the front of the lining board 1 is lowered.
Therefore, the upper corner of the front end face plate 11 of the lining board 1 collides with the rear end face board 12 of the front lining board 1.
However, the front cover plate 1 also has an impact sound attached to the upper corner of the rear end face plate 12.
The shock absorber 2 can absorb the impact sound by being interposed between the front lining board 1 and the lining board 1.

<5> Collision with a beam.
The above description is the absorption of the collision sound caused by the collision between the lining plate 1 and the lining plate 1.
However, in actuality, the lining board 1 given a downward force by the weight of the vehicle is struck against the upper surface of the beam 4 that supports it, and a large impact sound is generated at that time.

<5-1> Buffer body. (Fig. 6)
In order to buffer the collision sound between the lining plate 1 and the beam 4, two types of buffer bodies 3 having different heights are attached to the four corners of the bottom plate of the lining plate 1.
The buffer body 3 is a block of elastic members, a pillar, or a thick plate, a bag, a spring, or the like.
The buffer body 3 includes a high buffer body 31 having a high height and a low buffer body 32 having a low height.
The two buffer bodies 3 are attached as a set to the vicinity of the four corners of the lower surface plate 13 of the lining plate 1.

<5-2> Function of buffer body.
If the lining board 1 is mounted on the beam 4 in a state of being accurately supported at four points as depicted in the picture, it is meaningless to attach the buffer bodies 3 having different heights.
This is because all the buffer bodies 3 are deformed in the same state.
However, as described above, the lining plate 1 is actually mounted on the beam 4 in a three-point support state, and the floating corner frequently goes up and down every time the vehicle passes, and the bottom surface is the beam. Strike 4.
In such a corner away from the beam 4, when the beam 4 is hit by passing the vehicle, the high shock absorber 31 first collides with the beam 4 and absorbs a part of the hit energy.
Immediately thereafter, the low buffer 32 collides with the beam 4 and absorbs the impact energy.
Thus, the noise due to the impact of the vertical movement of the corner, which is the remaining one point of the three-point support lining plate 1, is greatly reduced through a two-stage absorption action.

<5-3> Integrated buffer. (Fig. 12)
In the embodiment of FIG. 6, the state where two types of shock absorbers 3 having different heights are installed has been described.
However, it is also possible to employ a buffer body 3 in which both are integrally formed.
For example, as shown in FIG. 12, it is possible to adopt a configuration in which one block is formed by the low buffer 32 and the high buffer 31 is projected from a part of the block.

<5-4> Two-layer buffer (FIG. 13)
The buffer body 3 can also be configured by overlapping double elastic materials having different hardnesses.
For example, hard rubber is pasted on the bottom side of the lining plate 1 as the hard member 34.
A soft rubber is stuck on the outside as the soft member 33.
In this way, the hard member and the soft member are doubled and configured.
Then, the soft member 33 located outside the buffer body 3 first collides with the beam 4 and absorbs a part of energy at that stage.
Thereafter, the two-stage function of finally absorbing impact energy by the hard member 34 can be achieved.

<6> Overall function.
As described above, the lining plate 1 of the present invention has shock absorbers 2 attached to at least the upper and lower corners of the front and rear end plates 11 and 12, and shock absorbers 3 having different heights at the four corners of the bottom plate. Is attached.
Therefore, when the vehicle passes through the three-point supported lining plate 1 where one point is always lifted, the impact sound between the lining plates 1 adjacent in the front-rear direction and the impact when colliding with the beam 4 Sound can be effectively reduced.

<7> Other embodiments. (Fig. 11)
In the above embodiment, the absorbent body 2 is attached to the lower corner of the front end face plate 11 of the covering board 1 and the upper corner of the rear end face plate 12 or vice versa.
This is because the lining plate 1 and the lining plate 1 are not aligned in parallel in the front-rear direction of the traveling direction of the vehicle while maintaining an accurate horizontal plane. It was to reduce.
The same problem occurs not on both sides of the lining plate 1 but on both sides thereof.
That is, when the traveling direction of the vehicle is referred to as “front” or “rear”, the shock absorbers 2 are similarly attached to the lower and upper corners of the “left” and “right” face plates. .
That is, the shock absorber 2 is attached to at least the lower corner of the right side plate 15 and the upper corner of the left side plate 14, or the shock absorber 2 is attached to at least the upper corner of the right side plate 15 and the lower corner of the left side plate 14. .
As a result of such a configuration, it is possible to reduce the generation of impact sound between the cover plates 1 adjacent in the left-right direction.
FIG. 11 shows a state in which the shock absorber 2 is attached only to the left and right side plates 14 and 15 of the lining plate 1 for the sake of explanation. Of course, it is also possible to attach the shock absorber 2 to the front and rear end plates 11 and 12.

1: lining plate 2: shock absorber 3: buffer body 4: beam

Claims (4)

A wrapping plate of a substantially rectangular parallelepiped formed by four end face plates, an upper surface plate and a lower surface plate,
If the direction of travel of the vehicle when laying is the front and back,
A shock absorber is attached to the lower corner of the front end plate and the upper corner of the rear end plate that hit the adjacent lining plate when the lining plate is lowered by entering the vehicle.
Alternatively, the shock absorber is attached to the upper corner of the front end plate and the lower end of the rear end plate where the lining plate descends by hitting the vehicle and hits the adjacent lining plate,
Furthermore, it is characterized by being formed by attaching two types of shock absorbers having different heights to the four corners of the bottom plate,
Noise countermeasure lining board. A wrapping plate of a substantially rectangular parallelepiped formed by four end face plates, an upper surface plate and a lower surface plate,
If the direction of travel of the vehicle when laying is the front and back,
A shock absorber is attached to the lower corner of the front end plate and the upper corner of the rear end plate that hit the adjacent lining plate when the lining plate is lowered by entering the vehicle.
Alternatively, the shock absorber is attached to the upper corner of the front end plate and the lower end of the rear end plate where the lining plate descends by hitting the vehicle and hits the adjacent lining plate,
Furthermore, it is characterized by being formed by attaching two types of shock absorbers having different hardnesses to the four corners of the bottom plate,
Noise countermeasure lining board. A wrapping plate of a substantially rectangular parallelepiped formed by four end face plates, an upper surface plate and a lower surface plate,
If the direction of travel of the vehicle when laying is the front and back,
Attach the shock absorber to the lower corner of the right side plate that hits the adjacent lining plate and the upper corner of the left side plate.
Alternatively, the shock absorber is attached to the upper corner of the right side plate that hits the adjacent lining plate and the lower corner of the left side plate.
And it was formed by attaching two types of shock absorbers with different heights to the four corners of the bottom plate,
Noise countermeasure lining board. A wrapping plate of a substantially rectangular parallelepiped formed by four end face plates, an upper surface plate and a lower surface plate,
If the direction of travel of the vehicle when laying is the front and back,
Attach the shock absorber to the lower corner of the right side plate that hits the adjacent lining plate and the upper corner of the left side plate.
Alternatively, the shock absorber is attached to the upper corner of the right side plate that hits the adjacent lining plate and the lower corner of the left side plate.
And, it is characterized by being formed by attaching two types of shock absorbers with different hardness at the four corners of the bottom plate,
Noise countermeasure lining board.

Images