CN101284549A - Vehicle with cabin - Google Patents
Vehicle with cabin Download PDFInfo
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- CN101284549A CN101284549A CNA2008100874804A CN200810087480A CN101284549A CN 101284549 A CN101284549 A CN 101284549A CN A2008100874804 A CNA2008100874804 A CN A2008100874804A CN 200810087480 A CN200810087480 A CN 200810087480A CN 101284549 A CN101284549 A CN 101284549A
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- cabin
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- sound absorption
- noise
- absorption materials
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Abstract
A vehicle with a cabin comprises a vehicle body supported by a plurality of wheels; a cabin bracket supported by the vehicle body; an elastic member for supporting the cabin, disposed between the cabin and the cabin bracket; and a weight member attached to a plate-shaped member of the cabin.
Description
Technical field
The present invention relates to have the driving vehicle in the band cabin in cabin at the running vehicle body upper support.
Background technology
As prior art, for example in JP2002-356184 disclosed like that, known have in the ground of the manoeuvre portion in cabin and day top wall portion etc. the sound-absorbing sheet material is set, thereby reduce the driving vehicle in the band cabin of the noise in the cabin.
In the driving vehicle in the band cabin of above-mentioned document, constitute, noise in the cabin is via a plurality of Kong Erxiang sound absorption materials transmission on the surface that is formed on the sound-absorbing sheet material, utilize the sound-absorbing effect of sound absorption materials to reduce noise in the low cabin, rather than reduce noise in the cabin by reducing the vibration that is passed to the ground of manoeuvre portion and sky top wall portion etc. from driving vehicle.Its result, even the sound-absorbing sheet material is arranged on the ground of manoeuvre portion and day top wall portion etc., not only noise minimizing effect is little for the area of the sound-absorbing sheet material that mounts or be provided with, and can not reduce noise in the cabin fully, the noise that is caused by the vibration of ground that is passed to manoeuvre portion from driving vehicle and day top wall portion etc. still becomes the big reason of the noise that makes in the unhappy cabin of driver.
And in the driving vehicle in the band cabin of above-mentioned file, the large-area sound-absorbing sheet material that mounts on a large scale or be provided with of ground by spreading all over manoeuvre portion and day top wall portion etc. reduces noise in the cabin.Its result, the problem that exist the parts unit price of sound-absorbing sheet material to uprise, the manufacturing cost of driving vehicle raises, and on the ground of manoeuvre portion and subsides such as day top wall portion pair or time that the sound-absorbing sheet material is set increases, the problem of the operation variation of the installation exercise of driving vehicle.
Therefore, consider on the ground of manoeuvre portion and day top wall portion etc. installed strengthening part or suppressed the steel plate etc. of vibration, reduces the vibration that is passed to the ground of manoeuvre portion and day top wall portion etc. from driving vehicle, reduces the noise that makes in the unhappy cabin of driver.But, if on the ground of manoeuvre portion and day top wall portion etc. strengthening part is installed or is suppressed the steel plate etc. of vibration, then along with strengthening part or suppress the installation of the steel plate etc. of vibration, the problem that exists the manufacturing cost of driving vehicle to raise, and the vehicle weight of driving vehicle becomes heavy problem.
As other prior art, as disclosed among the JP8-142776, known have sound absorption materials is set between interior subsides material and door main body, can utilizes door to reduce the acoustic construction of the vehicle of the indoor noise of car.
In the acoustic construction of the vehicle of JP8-142776, in being housed in, pastes sound absorption materials the inside of material, from the in-to-in noise transmission of the access door main bodys such as junction surface of interior subsides material and door main body to sound absorption materials, thereby can reduce the indoor noise of car, the indoor noise of car is difficult to be delivered to sound absorption materials by interior subsides material obstruct.Its result, the noise that produces in the cabin is difficult to be absorbed by sound absorption materials, also has room for improvement in order to reduce the indoor noise of car.
Summary of the invention
The objective of the invention is to alleviate at least one of problem of above-mentioned conventional art.
The driving vehicle in band of the present invention cabin possesses:
Be bearing in the car body on a plurality of wheels;
Be bearing in the cabin carriage on the above-mentioned car body;
Be configured between above-mentioned cabin and the above-mentioned cabin carriage, the elastomeric element in the above-mentioned cabin of supporting;
Be installed in the weight member on the plate-shaped member in above-mentioned cabin.
According to such structure, if the vibration from driving vehicle is passed to the cabin via elastomeric element, then the plate-shaped member that rigidity is lower can utilize the weight effects that is installed in the weight member on the plate-shaped member to reduce to be passed to the vibration of this plate-shaped member owing to the vibration from running vehicle body is vibrated.Its result, the noise in the cabin that can reduce to cause owing to the vibration that is passed to plate-shaped member from running vehicle body can reduce the noise in the cabin effectively.
In one embodiment, preferably one of the floor board in above-mentioned cabin and rear guard of above-mentioned plate-shaped member.
In one embodiment, above-mentioned weight member preferably utilizes bolt to be installed on the above-mentioned plate-shaped member via vibration-proof rubber.
In one embodiment, between above-mentioned weight member and above-mentioned bolt, preferably be provided with cartridge with above-mentioned plate-shaped member butt.
In one embodiment, above-mentioned weight member preferably is set to move to the low frequency direction by this weight member is installed as the peak value of the vibration acceleration of the function of frequency.
The driving vehicle in band of the present invention cabin possesses:
Be bearing in the car body on a plurality of wheels, above-mentioned car body supports above-mentioned cabin;
Be configured on the part of medial surface in above-mentioned cabin and be formed with the peristome of a plurality of openings;
Be configured in the sound absorption materials of the inner surface side of the medial surface that possesses above-mentioned peristome.
According to such structure, the noise in the cabin is delivered to the sound absorption materials that is equipped with on the inner surface side of medial surface by a plurality of openings that are formed on the peristome place, and utilize sound absorption materials sound-absorbing effect and by sound-absorbing.Its result, the noise in the cabin is delivered to sound absorption materials from being formed on a plurality of openings of peristome easily, and the noise in the cabin can reduce the noise in the cabin effectively easily by the sound absorption materials sound-absorbing.
In one embodiment, above-mentioned peristome is preferably formed on the post (pillar) of the cabin framework that constitutes above-mentioned cabin.
Thus, can make on the higher position of opening in the cabin that possesses sound absorption materials, sound absorption materials can be provided in and be sitting in the approaching height of ear of the driver on the driver's seat.Its result can effectively utilize sound absorption materials near the noise of the height the ear that is sitting in the driver on the driver's seat is carried out sound-absorbing.
In one embodiment, above-mentioned peristome is preferably formed in the rear portion on the interior top (innerroof) in above-mentioned cabin.
In one embodiment, above-mentioned a plurality of peristomes have the following diameter of 5mm separately, the state that staggers in the horizontal direction with the opening of adjacency up and down sets.
In one embodiment, above-mentioned peristome is preferably formed on the above-mentioned post set on the side that is located at the driver's seat in the above-mentioned cabin.
Description of drawings
Fig. 1 is the integral left view of trac..
Fig. 2 is the cross-sectional birds-eye view that the structure in cabin is shown.
Fig. 3 is the left view that the structure in cabin is shown.
Fig. 4 is near the vertical profile back view the carriage of cabin.
Fig. 5 is near the vertical profile lateral plan of dynamic damper of floor board.
Fig. 6 is near the vertical profile back view of dynamic damper of floor board.
Fig. 7 is near the back view of dynamic damper of rear guard.
Fig. 8 is near the vertical profile lateral plan of dynamic damper of frame support bracket.
Fig. 9 is the approximate vertical view of establishing method of the installation site of explanation dynamic damper.
Figure 10 is the skeleton diagram of simulation floor board etc.
Figure 11 is the diagram of curves of an example of measurement result that the vibration acceleration of each frequency on the floor board is shown.
Figure 12 illustrates the diagram of curves of an example of measurement result that dynamic damper is installed in the noise of each frequency under the situation on the floor board.
Figure 13 is the diagram of curves of an example of measurement result that the vibration acceleration of each frequency on the rear guard is shown.
Figure 14 illustrates the diagram of curves of an example of measurement result that dynamic damper is installed in the noise of each frequency under the situation on the rear guard.
Figure 15 is the diagram of curves of an example of measurement result that the vibration acceleration of each frequency on the frame support bracket is shown.
Figure 16 illustrates the diagram of curves of an example of measurement result that dynamic damper is installed in the noise of each frequency under the situation on the frame support bracket.
Figure 17 is the table of measurement result of the noise of each installation site of comparison.
Figure 18 is the integral left view of trac..
Figure 19 is the cross-sectional birds-eye view that the structure in the cabin is shown.
Figure 20 is the block diagram that near the structure of center pillar is shown.
Figure 21 is the vertical profile front view that near the structure of center pillar is shown.
Figure 22 is the cross-sectional birds-eye view that near the structure of center pillar is shown.
Figure 23 is the block diagram that the detailed structure of peristome is shown.
Figure 24 is the block diagram that the structure at Nei Ding rear portion is shown.
Figure 25 is the example of measurement result that the noise of each frequency is shown.
Figure 26 is the table of measurement result of the noise of each installation site of comparison.
Figure 27 is the block diagram that the structure of peristome in the of the present invention the 1st other embodiments and sound absorption materials is shown.
Figure 28 is the cross-sectional birds-eye view that the structure of peristome in the of the present invention the 1st other embodiments and sound absorption materials is shown.
Figure 29 is the approximate vertical view in the cabin of installing under the situation of base plate sheet material.
The specific embodiment
Carry out the explanation of a plurality of embodiments in this manual.The combination of features of the feature of an embodiment and other embodiment is also contained in the scope of the present invention.
[the 1st embodiment]
At first, embodiment about dynamic damper (dynamic dumper) is described.
[integral structure of trac.]
According to Fig. 1～Fig. 4, the integral structure of trac. of an example of the driving vehicle in band cabin is described.Fig. 1 is the unitary side view of trac., and Fig. 2 and Fig. 3 illustrate the cross-sectional birds-eye view and the lateral plan in cabin 8 respectively.And Fig. 4 illustrates near the vertical profile back view the cabin carriage 30.
As Fig. 1～shown in Figure 3, this trac. is a four-wheel driving type, possesses operation capable of free rotation and the front-wheel 1 of driving and the trailing wheel that can freely drive 2 of pair of right and left of pair of right and left on running vehicle body 3.The hood portion 5 of driving engine 4 grades is housed in the front portion of running vehicle body 3 has, the cabin 8 of bearing circle 6, driver's seat 7 etc. is housed in the rear portion of running vehicle body 3 has.
Forwards extend forward frame 10 from the bottom of driving engine 4, these forward frame 10 upper supports have (not shown) such as axle boxs that front-wheel 1 is installed.And, rearward extend clutch-bell cover 11 from driving engine 4, link on this clutch-bell cover 11 be positioned at driver's seat 7 below change speed gear box 12, be passed to trailing wheel 2 from the power of driving engine 4.
The rear portion of running vehicle body 3 have connecting rod mechanism 13 that the lift arm by pair of right and left constitutes, and power take out axle 14, but, can be rotated the descending operation and the driving of tillage device etc. by operatively linking rotary tillage device etc. (not shown) at free lifting on the connecting rod mechanism 13 and taking out at power that interlock links rotary tillage device etc. on the axle 14.
The door 17 of the swung switching at the stopping port place of the two sides that cabin 8 constitutes the fwd front glass 16 that has cabin framework 20, cover cabin framework 20, be arranged on cabin framework 20, be arranged on the side glass 18 at this rear portion of 17 and the back glass 19 that covers the back of cabin framework 20.
The top of cabin framework 20 is covered from the top by outer top 27 resinous, constituted hollow form by blow molding, and this outer top 27 is fixed on the upper frame 26 via sealing element (not shown).
In the bottom of cabin framework 20, link the floor board 28 (being equivalent to plate-shaped member) that the floor that forms cabin 8 is arranged, central portion is equipped with driver's seat 7 at the rear portion of this floor board 28.In the left and right sides portion of the lower face side of this floor board 28, front and back are fixed with the front and back framework 15 of rectangular tubulose, and the leading section of this front and back framework 15 is fixed on the carriage 41 described later, and the rearward end of front and back framework 15 is fixed on the frame support bracket 44.
Bottom in the lower frame 22 of the left and right sides portion that is positioned at cabin 8, be fixed with rear guard 29, this rear guard 29 constitutes mudwing main body 29A with the shape that is configured as the peripheral part that covers trailing wheel 2 from the top and the plate 29B that is positioned at the square side of trailing wheel 2.
Stopping port place in cabin framework 20 two sides that form along front pillar 23 and center pillar 24, can freely swing around the axle center of rearward end is equipped with door 17 with opening and closing, along center pillar 24 and rear pillar 25 so that side glass 18 to be installed with can freely swinging switching.
As shown in Figure 4, cabin carriage 30 will be by being fixed on fixed parts 31 on the clutch-bell cover 11, utilizing welding and integrally formedly constitute via the support unit 32 in vibration-proof rubber 36 supporting cabins 8, the strengthening part 33 of root that is arranged on cabin carriage 30 and the adjusting parts 34 that are arranged on the top ends of cabin carriage 30, by with fixed parts 31 fastening being fixed on the clutch-bell cover 11, cabin carriage 30 is fixed on the clutch-bell cover 11.
Vibration-proof rubber 36 constitutes has cylindrical body 36a, vibrationproof main body 36b of rubber system that inserts binder bolt 38 and the installation accessory 36c that is processed with the ring-type of mounting hole, by with vibration-proof rubber 36 embedded being inserted among the rubber patchhole 32a that is formed on the support unit 32, and will install that accessory 36c is fastening to be fixed on the support unit 32, vibration-proof rubber 36 can be fixed on the cabin carriage 30.
Top ends at cabin carriage 30 is equipped with vibrationproof counterweight 40 removably, number by change vibrationproof counterweight 40, can change the weight of the top ends of regulating cabin carriage 30, for example, can wait according to the specification of cabin 8 or driving engine 4 and change adjusting is passed to cabin 8 via cabin carriage 30 vibrational characteristics.
Lower face side at the floor board 28 of the lower surface that forms cabin framework 20 is fixed with carriage 41, is fixed with the link 37 of plate-like in the lower face side of this carriage 41.By link 37 is inserted with the upper surface side butt of vibration-proof rubber 36 and with binder bolt 38 and the fastening cylindrical body 36a that is fixed on vibration-proof rubber 36 in, cabin 8 and vibration-proof rubber 36 can be linked, can via vibration-proof rubber 36 with cabin 8 elastic supports on cabin carriage 30.
Bottom at the cylindrical body 36a of vibration-proof rubber 36 utilizes binder bolt 38 together to be fastened with a plurality of discoideus counterweights 35, by changing the number of this counterweight 35, can change the vibrational characteristics that adjusting is transmitted via cabin carriage 30.
In the top ends of cabin carriage 30,,, can simply promptly carry out the location of cabin 8 with respect to the direction all around of cabin carriage 30 by this locating dowel pin 39 being embedded among the knock hole 41a that is arranged on the carriage 41 from the fastening locating dowel pin 39 that is fixed with of lower side.
Constitute cabin carriage 30 like that by above-mentioned, can utilize strengthening part 33 and regulate parts 34 to make the rigidity of cabin carriage 30 tell power.Its result, can utilize the high part of rigidity that is provided with strengthening part 33 to guarantee the intensity of cabin carriage 30, simultaneously can will the eigentone of cabin carriage 30 can be suppressed lower from the transfer of vibration of clutch-bell cover 11 to the cabin 8 via the part that rigidity is low and eigentone is low of the left and right sides central portion of cabin carriage 30.
And, by top ends vibrationproof counterweight 40 is installed at cabin carriage 30, counterweight 35 is installed in bottom at vibration-proof rubber 36, can utilize vibrationproof counterweight 40 and counterweight 35 to regulate the eigentone that is passed to the vibration in cabin 8 via cabin carriage 30, the eigentone that is passed to the vibration in cabin 8 via cabin carriage 30 and vibration-proof rubber 36 can be adjusted to lower value.Its result can prevent to empathize in cabin 8 etc. and the cavity resonance sound takes place.
[detailed construction of dynamic damper]
The detailed construction of dynamic damper 50 is described according to Fig. 5～Fig. 8.Fig. 5 and Fig. 6 show near vertical profile lateral plan and the vertical profile back view the dynamic damper 50 that is installed on the floor board 28 respectively.Fig. 7 and Fig. 8 show near the back view the dynamic damper that is installed on the rear guard 29 50 respectively and are installed near the dynamic damper 50 on the frame support bracket 44 vertical profile lateral plan.
As shown in Figure 5 and Figure 6, dynamic damper 50 constitute have weight member 51, as having viscosity and elastomeric elastomeric vibration-proof rubber 52, cartridge 53, backing plate 54 and a bolt of rear end plate 56.Weight member 51 is made of the band steel of steel plate system, and is formed with two mounting hole 51A of the above-below direction of embedded vibration-proof rubber 52.Vibration-proof rubber 52 is the rubber systems that are set at set hardness, is made of main part 52A cylindraceous and the flange part 52B that is formed on the end of this main part 52A.
Like this, by with weight member 51 via vibration-proof rubber 52 elastic supports on floor board 28, with for example the situation of weight member 51 non-yielding props on floor board 28 compared, can reduce the vibration of floor board 28 effectively, can reduce the noise in the cabin 8 effectively.In addition, as the structure of weight member 51 elastic supports on floor board 28 also can be adopted different structures, for example also can adopt by as elastomeric spring (not shown) or damper (not shown) etc. with the structure of weight member 51 elastic supports on floor board 28.
And, constitute on the upper surface of the upper surface of cartridge 53 and lower surface that lower surface is connected to floor board 28 respectively and backing plate 54, and dynamic damper 50 is fixed on the floor board 28, can make the fastening force of bolt of rear end plate 56 act on floor board 28, cartridge 53 and the backing plate 54.Its result can prevent the loosening of bolt of rear end plate 56 that travelling of trac. etc. caused, can prevent coming off of dynamic damper 50 that travelling of trac. etc. caused.
Two weight members 51 are stacked up and down, from the top of the weight member 51 of upside vibration-proof rubber 52 is embedded in two mounting hole 51A, and vibration-proof rubber 52 is embedded in two mounting hole 51A from the below of the weight member 51 of downside.And, cartridge 53 is embedded among the main part 52A of vibration-proof rubber 52 up and down, insert bolt of rear end plate 56 at the discoideus backing plate 54 of middle clamping and packing ring 55 from lower side, the fastening washer nut 57 that fixedly adds can simply promptly be installed in weight member 51 on the floor board 28 via vibration-proof rubber 52 thus from the top.
Gap between the inner peripheral surface of the outer peripheral face of cartridge 53 and vibration-proof rubber 52, and the inner peripheral surface of the mounting hole 51A of the outer peripheral face of the main part 52A of vibration-proof rubber 52 and weight member 51 between the gap set lessly.Its result can prevent that weight member 51 from departing from mobile because of travelling of trac. etc. on in-plane.
As shown in Figure 2, dynamic damper 50 is in birds-eye view, with its length direction is front and back framework 15 configurations of the mode of fore-and-aft direction along the lower face side that is fixed on floor board 28, and the dynamic damper 50 on right side and the dynamic damper 50 in left side set with staggering a little on fore-and-aft direction.
As Fig. 3 and shown in Figure 7, on the plate 29B (being equivalent to plate-shaped member) of the rear guard 29 of the square side that is positioned at trailing wheel 2, dynamic damper 50 is installed.On front and back framework 15 and plate 29B, be formed with two through holes that connect on the left and right directions, constitute the weight member 51,51 of dynamic damper 50, vibration- proof rubber 52,52 and cartridge 53 utilize bolt of rear end plate 56 via backing plate 54 and packing ring 55 and add washer nut 57 fastening being fixed in this through hole.
On the dynamic damper 50 that is installed on the rear guard 29, be equipped with and the above-mentioned identical weight member 51 of weight member 51 shapes that is installed on the floor board 28, shape universalization by with weight member 51 can make the part universalization, realizes the reduction of manufacturing cost.In addition, the detailed construction of dynamic damper 50 is identical with the above-mentioned dynamic damper 50 that is installed on the floor board 28.
As Fig. 3 and shown in Figure 8, the rear support in cabin 8 is being equipped with dynamic damper 50 on the frame support bracket on after accommodation's carriage 45 44 upper surface side of (being equivalent to plate-shaped member) via vibration-proof rubber 46.Be formed with the through hole that above-below direction connects on frame support bracket 44, the weight member 51, vibration- proof rubber 52,52 and the cartridge 53 that constitute dynamic damper 50 utilize bolt of rear end plate 56 via backing plate 54 and packing ring 55 and add washer nut 57 fastening being fixed in this through hole.
On the dynamic damper 50 that is installed on the frame support bracket 44, a weight member 51 that is configured as corresponding to the shape of frame support bracket 44 is installed, and the weight of setting dynamic damper 50 is the only about half of weight that is installed in the dynamic damper 50 on above-mentioned floor board 28 and the rear guard 29.In addition, the detailed construction of dynamic damper 50 is except the size difference of weight member 51, vibration-proof rubber 52 and cartridge 53, and is identical with the above-mentioned dynamic damper 50 that is installed on the floor board 28.
[establishing method of the installation site of dynamic damper]
According to Fig. 9 and Figure 10, the establishing method of the installation site of dynamic damper 50 is described.Fig. 9 represents to illustrate that Figure 10 represents to simulate the skeleton diagram of floor board 28 grades to the approximate vertical view of the establishing method of the installation site of the dynamic damper 50 of floor board 28.In addition, in the following description, the establishing method of the installation site of the dynamic damper 50 that is installed on the floor board 28 has been described, but establishing method about the installation site that is installed in the dynamic damper 50 on rear guard 29 and the frame support bracket 44, except the differences such as object of installing, other structures are identical with situation on being installed in floor board 28.
As shown in Figure 9, the situation (for example situation of driving engine 4 standard-sized sheets) of vibration takes place in performance, measure the vibration of the panel face of the floor board 28 in the scope that oblique line enclosed of Fig. 9, the generation that thick line enclosed of the specific Fig. 9 of going out becomes the zone (specific frequency area A) of vibration of specific frequency (for example 200Hz) of the reason of the noise in the cabin 8 in the scope easily.
And, the position (A1 among Fig. 9) of the central part of the specific frequency area A that thick line enclosed of Fig. 9 is set at the installation site of dynamic damper 50.Like this, according to the measurement result of the frequency of the vibration on the floor board 28, the installation site of dynamic damper 50 is set in the zone of the vibration of the specific specific frequency that goes out to produce the reason that becomes the noise in the cabin 8 easily.
In addition, as mentioned above, in this trac.,,, dynamic damper 50 is being installed on the position of front and back framework 15 in position near the A1 of Fig. 9 aspect the position relation of front and back framework 15.
Shown in Figure 10 (A), if the floor board 28 of this trac. of simulation can be assumed to the constrained beam shown in Figure 10 (A).Go up installation dynamic damper 50 by near the big position of the vibration the midway location of this constrained beam (near the position of amplitude largest portion L), can reduce vibration effectively.
In addition, for example if the plate 29B and the frame support bracket 44 of simulation rear guard 29 then shown in Figure 10 (B), can be assumed to the cantilever fixed beam, the top ends of plate 29B and frame support bracket 44 is equivalent to vibrate big position (near the position of amplitude largest portion L).
As mentioned above, the vibration of the panel face by measuring floor board 28, and the specific specific frequency area A that goes out to produce the vibration of characteristic frequency, can specificly go out to be equivalent to the zone of panel face of floor board 28 of the amplitude largest portion L of the constrained beam shown in Figure 10 (A), by position A1 dynamic damper 50 is installed at the central part of this specific frequency area A, utilize the quality and the attenuating with viscosity and elastomeric vibration-proof rubber 52, the vibration of the floor board 28 of can decaying effectively of weight member 51.
In addition, the weight of dynamic damper 50 is set at following weight: at above-mentioned installed position, show the number of weight member 51 of change dynamic damper 50 or thickness and vibrative multiple situation, and according to a plurality of measurement results of measuring of number of this weight member 51 of change, the weight of the vibration of the floor board 28 of can decaying effectively.
[measurement result of vibration acceleration and noise]
According to Figure 11～Figure 17, the measurement result of vibration acceleration of each frequency and the measurement result that the noise under the situation of dynamic damper 50 has been installed are described.Figure 11, Figure 13 and Figure 15 show the diagram of curves of more following two data, these two data are: under the state that dynamic damper 50 is installed in floor board 28 (Figure 11), rear guard 29 (Figure 13) and frame support bracket 44 (Figure 15), go up installation shock sensor (not shown) in the position (for example position of the A1 among Fig. 9 under the situation of floor board 28) of measuring vibration, knock the producing of position that vibration sensor has been installed on every side with (not shown) such as hammers and vibrate, measure the data of the vibration acceleration (G) of each frequency with vibration sensor; And under the state that dynamic damper 50 is not installed, installation shock sensor on the position of measuring vibration, knock the producing of position that vibration sensor has been installed on every side with hammer etc. and vibrate, measure the data of the vibration acceleration (G) of each frequency with vibration sensor.
Figure 12, Figure 14 and Figure 16 show the diagram of curves of more following two data, these two data are: under the state that dynamic damper 50 is installed in floor board 28 (Figure 12), rear guard 29 (Figure 14) or frame support bracket 44 (Figure 16), standard-sized sheet driving engine 4 is measured near the data of the noise (dBA) the driver's be sitting in driver's seat 7 the ear; And under the state that dynamic damper 50 is not installed, standard-sized sheet driving engine 4 is measured near the data of the noise (dBA) the driver's be sitting in driver's seat 7 the ear.In Figure 12, Figure 14 and Figure 16, the central frequency of every 1/3 octave band is represented the spectrum value of the noise (dBA) of the every 1/3 octave band (octave-band) under the A characteristic with excellent figure shape.In addition, the OA value is the abbreviation of total value (overall), and expression is used for the comprehensive evaluation of noise from the value that the measured value of the noise of each octave band calculates.
In addition, Figure 17 represents relatively dynamic damper 50 to be installed in the spectrum value of the noise under the situation on floor board 28, rear guard 29, the frame support bracket 44 and the table of OA value.
As shown in figure 11, if dynamic damper 50 is installed on the floor board 28, compare with the situation that dynamic damper 50 is not installed, frequency in the time of can be with the peak value of vibration acceleration moves to about 170Hz (P2 among Figure 11) from about 210Hz (P1 Figure 11), can suppress near the vibration acceleration of the floor board 28 of frequency 200Hz lower.Its result can must be lower with near the vibration suppression that becomes easily the 200Hz of floor board 28 of the noise in the cabin 8, can suppress the resonance of floor board 28.
As shown in figure 12, if dynamic damper 50 is installed on the floor board 28, compare with the situation that dynamic damper 50 is not installed, the spectrum value of the noise in the time of central frequency can being 200Hz reduces about 6.7dBA, the OA value can be reduced about 0.5dBA.Its result can reduce near the noise of ear that rides in the driver on the driver's seat 7.
As shown in figure 13, if dynamic damper 50 is installed on the rear guard 29, compare with the situation that dynamic damper 50 is not installed, frequency in the time of can be with the peak value of vibration acceleration moves to about 170Hz (P4 among Figure 12) from about 125Hz (P3 Figure 12), can suppress near the vibration acceleration of frequency 125Hz lower.And, can suppress near the vibration acceleration of frequency 200Hz lower.Its result can must be lower with the vibration suppression that becomes near the rear guard 29 of frequency 125Hz and 200Hz of the noise in the cabin 8 easily, can suppress the resonance of rear guard 29.
As shown in figure 14, if dynamic damper 50 is installed on the rear guard 29, compare with the situation that dynamic damper 50 is not installed, the spectrum value of the noise in the time of central frequency can being 125Hz reduces about 10dBA, the spectrum value of the noise in the time of central frequency can being 200Hz reduces about 2.0dBA, the OA value can be reduced about 0.6dBA.Its result can reduce near the noise of ear that rides in the driver on the driver's seat 7.
As shown in figure 15, if dynamic damper 50 is installed on the frame support bracket 44, compare with the situation that dynamic damper 50 is not installed, frequency in the time of can be with the peak value of vibration acceleration moves to about 680Hz (P6 among Figure 15) from about 400Hz (P5 Figure 15), can suppress near the vibration acceleration of frequency 400Hz lower.Its result can must be lower with the vibration suppression that becomes near the frame support bracket 44 of frequency 400Hz of the noise in the cabin 8 easily, can suppress the resonance of frame support bracket 44.
As shown in figure 16, if dynamic damper 50 is installed on the frame support bracket 44, compare with the situation that dynamic damper 50 is not installed, the spectrum value of the noise in the time of central frequency can being 400Hz reduces about 4.4dBA, the OA value can be reduced about 0.4dBA.Its result can reduce near the noise of ear that rides in the driver on the driver's seat 7.
As shown in figure 17, by dynamic damper 50 being installed on floor board 28, rear guard 29 and the frame support bracket 44, the spectrum value of the noise under near the frequency of reason of the noise the ear of the driver on the driver's seat 7 that rides in cabin 8 can be reduced to become easily, near the OA value of the noise the ear of the driver on the driver's seat 7 can be reduced to ride in owing to floor board 28, rear guard 29 and frame support bracket 44 vibrations.
If dynamic damper 50 is installed on the floor board 28, can significantly reduce the spectrum value of the noise of central frequency when being 200Hz, if dynamic damper 50 is installed in rear guard 29, can significantly reduce the spectrum value of the noise of central frequency when being 125Hz, if dynamic damper 50 is installed on the frame support bracket 44, can significantly reduce the spectrum value of the noise of central frequency when being 400Hz.Its result can reduce the spectrum value of the noise in the frequency bandwidth of target effectively, and its effect can be by the results verification that is presented as the OA value as the measurement result of noise.
And, can confirm by the dynamic damper 50 that is installed on floor board 28, rear guard 29 and the frame support bracket 44, can under different respectively frequencies, bring into play the noise reduction in the cabin 8.
In addition, in Figure 11～Figure 17, the example of having represented the determination data of vibration acceleration under the situation that dynamic damper 50 has been installed respectively on floor board 28, rear guard 29 or the frame support bracket 44 and noise, but dynamic damper 50 is installed in floor board 28, rear guard 29 and frame support bracket 44 any two or all on the time, can more effectively reduce the noise in the cabin 8.
In the above-described embodiment, represented dynamic damper 50 (weight member 51) is installed in example on floor board 28, rear guard 29 and the frame support bracket 44, but also can dynamic damper 50 (weight member 51) be installed on the different plate-shaped member that constitutes cabin 8, for example also can push up outside dynamic damper 50 (weight member 51) is installed on 27 grades.And, can be different installation sites to the installation site of the dynamic damper 50 (weight member 51) of floor board 38 grades, for example also can dynamic damper 50 (weight member 51) be installed at the peripheral part of the driver's seat 7 at the rear portion of floor board 28.
In the above-described embodiment, represented thereby weight member 51 to be installed on floor board 28, rear guard 29 and the frame support bracket 44 as dynamic damper 50 and the example of performance function, but also can adopt the structure that weight member 51 is not installed via vibration-proof rubber 52 simply via vibration-proof rubber 52.According to this structure, the installation constitution of weight member 51 is oversimplified, can cut down manufacturing cost.
In the above-described embodiment, represented weight member 51 to be installed in example on floor board 28, rear guard 29 and the frame support bracket 44 with bolt of rear end plate 56, but also can adopt diverse ways as the method that weight member 51 is installed on floor board 28 grades, for example also can adopt bonding vibration-proof rubber 52 on weight member 51, be bonded in structure on floor board 28 grades being bonded in vibration-proof rubber 52 on this weight member 51.And, do not installing via vibration-proof rubber 52 under the situation of weight member 51, also can adopt weight member 51 is welded on structure on floor board 28 grades.
[the 2nd embodiment]
Then, embodiment about sound absorption materials is described.
[integral structure of trac.]
According to Figure 18～Figure 20, the integral structure of trac. of an example of the driving vehicle in band cabin is described.Figure 18 is the unitary side view of trac., and Figure 19 and Figure 20 illustrate the cross-sectional birds-eye view in cabin 108 respectively and 107 block diagrams of looking to the rear portion, right side in cabin 108 from the driver's seat.
As shown in figure 18, this trac. is a four-wheel driving type, constitutes the operation capable of free rotation and the front-wheel 101 of driving and the trailing wheel that can freely drive 102 of pair of right and left that possess pair of right and left on running vehicle body 103.The hood portion 105 of driving engine 104 grades is housed in the front portion of running vehicle body 103 has, the cabin 108 of bearing circle 106, driver's seat 107 etc. is housed in the rear portion of running vehicle body 103 has.108 top, rear portion is equipped with a plurality of operating lights 109 in the cabin, by these operating light 109 irradiation rears, thereby can carry out ploughing and weeding operation etc.
Forwards extend main frame 110 from the bottom of driving engine 104, these main frame 110 upper supports have (not shown) such as axle boxs that front-wheel 101 is installed.And, rearward extend clutch-bell cover 111 from driving engine 104, link on this clutch-bell cover 111 have be positioned at driver's seat 107 below change speed gear box 112, be passed to trailing wheel 102 from the power of driving engine 104.
Rear portion at running vehicle body 103, have connecting rod mechanism 113 that the lift arm by pair of right and left constitutes, and power take out axle 114, but, can be rotated the descending operation and the driving of tillage device etc. by operatively linking rotary tillage device etc. (not shown) at free lifting on the connecting rod mechanism 113 and taking out at power that interlock links rotary tillage device etc. on the axle 114.
[detailed construction in cabin]
The door 117 of the swung switching at the stopping port place of the two sides that cabin 108 constitutes the fwd front glass 116 that has cabin framework 120, cover cabin framework 120, be arranged on cabin framework 120, be arranged on the side glass 118 at this rear portion of 117 and the back glass 119 that covers the back of cabin framework 120, cabin 108 is by after accommodation's carriage 137 elastic supports of the anterior cabin carriage 136 of the pair of right and left of the left and right sides portion that is fixed on clutch-bell cover 111 and the pair of right and left of extending from the top, rear portion of change speed gear box 112.
Cabin framework 120 constitutes the bearer frame 121 of the square tube type with supporting cabin 108 and is attached at lower frame 122 on this bearer frame 121 etc., and the various frame clsss that constitute cabin framework 120 link welding forming such as tubing.
Extend the front pillar 123 of pair of right and left, the center pillar CP of pair of right and left and the rear pillar 125 of pair of right and left respectively upward from top ends, central portion and the rearward end of lower frame 122, this front pillar 123, center pillar CP and rear pillar 125 are attached at respectively on the upper frame 126.
Upper frame 126 be by with vertical sectional shape be front vehicle frame crossbeam 127, the vertical sectional shape of コ word shape be the pair of right and left of コ word shape curb girder 128, and vertical sectional shape be that back cross member of frame 129 welding formings of コ word shape constitute, in being equipped with, the bottom of this upper frame 126 pushes up 133, top 134 outside being equipped with in the mode that covers upper frame 126 from the top.
Back cross member of frame 129 be configured in from about the upper end of rear pillar 125 downwards both on the height and position of set a distance, this back cross member of frame 129 and outside push up and dispose air-conditioning unit 135 in the space that forms between 134.
In top 133 circumference be installed in front vehicle frame crossbeam 127, about curb girder 128, and the lower surface place of back cross member of frame 129, push up outward 134 circumference by front vehicle frame crossbeam 127 and about the upper surface place supporting of curb girder 128.
Be equipped with the ground-surface floor board 130 that forms cabin 108 in the lower face side of cabin framework 120, the left and right sides of this floor board 130 one be fixed with form from above cover the rear guard 132 of shape of the peripheral part of trailing wheel 102.Floor board 130 constitutes step floor board 130A with 108 front portions, cabin, and the seat plate panel 130B at 108 rear portions, cabin, is equipped with driver seat 107 at the left and right sides central portion of seat floor board 130B.
The step floor board 130A of the left and right sides central portion of forward frame 131 108 front portions from the cabin extends upward, and bearing circle 106 is bearing on this forward frame 131.
Stopping port place in cabin framework 120 two sides that form along front pillar 123 and center pillar CP, can freely swing around the axle center of rearward end is equipped with door 117 with opening and closing, along center pillar CP and rear pillar 125 side glass 118 is installed with can freely swinging switching.
[detailed construction in the cabin]
As Figure 19 and shown in Figure 20, the left and right sides central portion at 108 rear portions is equipped with driver seat 107 in the cabin, is equipped with resinous control box 140 in the right side of this driver seat 107.Concentrate in the control box 140 and be equipped with: make connecting rod mechanism 113 liftings and carry out position control position bar 141, and the state of synchronous state of moving velocity and individual drive between switch the power that power takes out the driving condition of axle 114 take out select switch 142, carry out the various controls such as Spin Control of apparatus for work the open circuited automatic switch 43 of connection, and the tilling depth of setting the tilling depth position of apparatus for work set the operating parts that operation such as rotating disk 144 is used.
Be equipped with a plurality of operating switch 145A of operating air conditioner unit 135 in the control box 140,, can change air quantity of the wind that adjusting blows out from air-conditioning unit 135 etc. in cabin 108 by operating this operating switch 145A.The internal equipment that is equipped in the cover 146 on the control box 140 has a plurality of operating parts (not shown) of rotating disc type, by this operating parts of rotating operation, can change the setting of the upper limit position of the adjusting of rotation (rolling) angle of regulating apparatus for work and apparatus for work.
107 left side is equipped with resinous protective case 147 in the driver's seat, about the top of rear guard 132 cover by above-mentioned resinous control box 140 and resinous protective case 147.
The forward frame 131 of extending upward from step floor board 130A by cover 148 cover, the bottom of bearing circle 106 is covered by Steering wheel covers 149.
About air-conditioning duct (not shown) from the left and right sides portion of air-conditioning unit 135 by between outer top 134 and the interior top 133 and extension forwards is formed with a plurality of blow-off outlets on the air-conditioning duct about this.On interior top 133, be equipped with variable adjusting and blow out grille 138 from the wind direction of the air of air-conditioning duct, the blow-off outlet of air-conditioning duct constitutes, from blowing out towards the direction that is changed adjusting by the driver from blowing out grille 138 with this air that blows out grille 138 bonded assembly air-conditioning units 135.
[installation constitution of sound absorption materials]
According to Figure 20～Figure 24, the installation constitution of sound absorption materials 155 is described.Figure 21 illustrates near the vertical profile front view of center pillar CP on right side, and Figure 22 illustrates near the cross-sectional birds-eye view the center pillar CP.And Figure 23 illustrates the details drawing of the peristome 153 of post cover 150, the block diagram that 107 sides are looked from the driver's seat at 133 rear portions, top in Figure 24 illustrates.In addition, in Figure 20～Figure 23, with the sound absorption materials 155 on the post cover 150 on the right side that is mounted on driver's seat 107 is that example is illustrated, but is mounted on sound absorption materials 155 on the post cover 150 in left side of driver's seat 107 except the left and right directions difference, and other structure is identical.
Shown in Figure 20～23, center pillar CP constitutes has center pillar main body 124 and post cover 150.Center pillar main body 124 is configured as the コ word shape of the inside side's side of shape of cross section (driver's seat 107 sides) opening, is formed with cover mounting hole 124a in the front face side of this center pillar main body 124 and the many places of back side.
The post cover 150 of center pillar CP is resin systems, shape of cross section is configured as to the コ of foreign side's side opening word shape, with the main board 151 of driver's seat 107 sides and integrally formed and constitute from the side plate 152,152 of the front and back that the top ends and the rearward end outward direction warpage of this main board 151 is shaped.
The central portion up and down that shape in the front view of post cover 150 is configured as main board 151, constitutes 155 pairs of sound absorption materialss on the inside face 150A that can utilize the main board 151 that sticks on this bending forming and rides near the ear of the driver on the driver's seat 107 noise sound-absorbing effectively to the recessed slick and sly crooked shape of foreign side's side with certain curvature.The upper and lower of post cover 150 is configured as the shape corresponding to the shape of the control box 140 of interior top 133 and post cover 150 bottoms, and constituting from the driver's seat the 107 sides outward appearance of looking good.
On the main board 151 of post cover 150, from it portion be formed with up to the bottom from interior side's side look and be shaped as lengthwise OBL slightly to the recessed peristome 153 of foreign side's side.On peristome 153, form the opening 153A of a plurality of circular holes with same intervals.In order to ensure shared area (aperture area) broad of the opening 153A in the peristome 153, the opening 153A of adjacency sets with the state that staggers in the horizontal direction up and down.Preferably whole opening 153A is formed identical size, but also the size of some opening 153A can be formed with other openings 153A different sizes.Opening 153A separately preferably has the following diameter of 1cm, is more preferably to have the following diameter of 0.5cm.
Like this,, not only can guarantee the aperture area broad of peristome 153, the sound-absorbing effect of raising sound absorption materials 155, can also form without detriment to peristome attractive in appearance 153 by on post cover 150, forming the peristome 153 that is equipped with opening 153A.
By form peristome 153 on post cover 150, the noise in the driver's seat 107 is delivered to the sound absorption materials 155 of the inside face 150A side that sticks on post cover 150 easily, and sound enters the inside of sound absorption materials 155 easily.Its result compares with the situation of pasting sound absorption materials 155 in the inner surface side of (not shown) such as covers that peristome 153 for example is not set, can realize utilizing the sound-absorbing of the noise in the driver's seat 107 of sound absorption materials 155 effectively.
Bottom at the main board 151 of post cover 150, be formed with from recess 151A, the 51A of the deep front and back of foreign side's side, on this recess 151A, 51A, be equipped with the operating light operating switch 145B, the 145B that connect the operating light 109 that disconnects the top, rear portion that is equipped in cabin 108.
Many places at the side plate 152,152 of the front and back of post cover 150 are formed with mounting hole.Post cover 150 is combined the position of the cover mounting hole 124a that is embedded in center pillar main body 124 if connecting element 154 is installed in the mounting hole of post cover 150, the connecting element 154 of post cover 150 is pressed into towards center pillar main body 124, then the top ends of connecting element 154 engages with cover mounting hole 124a, post cover 150 can be fixed on the center pillar main body 124, if with the connecting element 154 of post cover 150 forwards or the rear pull, then the engaging to cover mounting hole 124a of connecting element 154 top ends is removed, and post cover 150 is simply promptly therefrom lived main body 124 take off.
Inside face 150A side at the main board 151 of post cover 150 is pasted with banded long up and down sound absorption materials 155.Sound absorption materials 155, its area are set at wideer than the area of the peristome 153 of post cover 150, spread all over overall region and cover the peristome 153 of post cover 150, and the peripheral part of sound absorption materials 155 is mounted on the inside face 150A of post cover 150.Mounting of sound absorption materials 155 preferably undertaken by known adhesives, but also can utilize other known method such as screw bolt and nut to install.Fix the structure of sound absorption materials 155 by adopting such peripheral part to be mounted on the inside face 150A of post cover 150, become and be difficult to transmit to sound absorption materials 155 thereby can prevent from for example between the inside face 150A of sound absorption materials 155 and post cover 150, to sandwich noise in the adhesives cabin 108 with sound absorption materials 155.
As shown in figure 19, center pillar CP is positioned at the left and right sides side of the driver's who rides in driver's seat 107 head, and the surface of sound absorption materials 155 is the configuration of 107 sides ground towards the driver's seat.Like this, possess the post cover 150 of sound absorption materials 155, the post cover 150 that possesses sound absorption materials 155 is positioned on the position near driver's ear by installation.Its result can utilize the noise sound-absorbing effectively in 155 pairs of driver's seats of sound absorption materials of being possessed on the post cover 150 107, can reduce effectively to make the driver feel harsh noise.
And, be installed on the up and down long center pillar main body 124 by the post cover 150 that will possess sound absorption materials 155, not only can reduce making the driver feel harsh noise effectively, and the rubbish in the cabin 108 or dust are difficult for the surface sediment at sound absorption materials 155.Its result can make the sound-absorbing effect of sound absorption materials 155 continue.
As shown in figure 22, under the state that post cover 150 is installed on the center pillar main body 124, form spaces, guarantee to have the mode in set space to set the thickness etc. of sound absorption materials 155 in foreign side's side of sound absorption materials 155 to utilize center pillar main body 124 and post cover 150.Its result, the expansion effect of the sound wave when the amplitude utilization that enters the sound of sound absorption materials 155 via the peristome 153 of post cover 150 enters this space and further being attenuated, thus can reduce noise in the driver's seat 107 more effectively.And the heat energy of sound absorption materials 155 can be dispelled the heat effectively by the space of guaranteeing in foreign side's side of sound absorption materials 155.
As shown in figure 24, be formed with the internal gas supply port 133A of the OBL pair of right and left of growing crosswise in the rear portion on interior top 133 central authorities, on this internal gas supply port 133A netted resinous vent hood 139 is installed, can with the air in the cabin 108 internally gas supply port 133A supply with to air-conditioning unit 135.
On the top 133 of top that is positioned at internal gas supply port 133A and bottom, be formed with peristome 133B, 133B up and down.On peristome 133B, 133B up and down, be formed with the opening same, be pasted with the roughly overall region that spreads all over peristome 133B and the sound absorption materials 156 that covers in the inner surface side (air-conditioning unit 135 sides) of this peristome 133B with the peristome 153 of above-mentioned post cover 150.
Like this, by be positioned at internal gas supply port 133A near top 133 on form peristome 133B, not only can guarantee the aperture area broad of peristome 133B, the sound-absorbing effect of raising sound absorption materials 156, can also be without detriment to being aesthetically formed peristome 133B.
The sound absorption materials 156 of top on 133 is positioned at the top, oblique rear of the head that rides in the driver on the driver's seat 107 in being arranged on, and disposes in the mode of surface 107 sides towards the driver's seat of sound absorption materials 156.Like this, by sound absorption materials 156 is installed at the rear portion on interior top 133, the sound absorption materials 156 on top 133 in being arranged on is positioned on the position near driver's ear.Its result can effectively carry out sound-absorbing to the noises in the driver's seat 107 by the sound absorption materials 156 on top 133 in being arranged on, and can reduce effectively to make the driver feel harsh noise.
And, on top 133 in sound absorption materials 156 is arranged on, not only can reduce making the driver feel harsh noise effectively, and the rubbish in the cabin 108 or dust are difficult for the surface sediment at sound absorption materials 156.Its result can make the sound-absorbing effect of sound absorption materials 156 continue.
[effect under the situation of sound absorption materials has been installed]
According to Figure 25, Figure 26 and Figure 29, near the measurement result of the noise the ear of the driver on the driver's seat 107 that rides in the cabin 108 that sound absorption materials 155,156 has been installed is described.Figure 25 has represented the diagram of curves of more following two data, these two data are: under the state that sound absorption materials 155 and sound absorption materials 156 have been installed, with driving engine 104 standard-sized sheets, measure near the data of the noise the driver's be sitting in driver's seat 107 the ear with phonometer (not shown); And under the state that sound absorption materials 155 and sound absorption materials 156 are not installed,, measure near the data of the noise the driver's be sitting in driver's seat 107 the ear with phonometer with driving engine 104 standard-sized sheets.
In Figure 25, the central frequency of every 1/3 octave band is represented the noise (dBA) of the every 1/3 octave band under the A characteristic with excellent figure shape.In addition, the OA value is the abbreviation of total value, has represented the value that calculates from the measured value that every octave band is measured, is used for the comprehensive evaluation of noise.
Figure 26 is sound absorption materials 155 is more only installed in expression at center pillar CP a situation, 133 situations that sound absorption materialss 156 are installed only on interior top, situation at center pillar CP and interior top 133 installation sound absorption materialss 155 and sound absorption materials 156, and sound absorption materials 155 is not installed the spectrum value more than the 800Hz of the noise under the situation with the base plate sheet material 160 of sound absorption materials 155 identical materials and the table of OA value have been installed in the bottom of the ground of the seat plate panel 130B that surrounds by as shown in figure 29 oblique line and back glass 119 with sound absorption materials 156.In addition, on the ground of seat floor board 130B and the bottom of back glass 119 determination data that base plate sheet material 160 is installed be used for illustrating of comparison, the effect to sound absorption materials 155 and sound absorption materials 156 does not exert an influence.
In addition, the value that the spectrum value representation of the noise among Figure 26 is set at the measurement range of phonometer 800～5000Hz, calculates from the measured value that every octave band is measured, the value that the OA value representation of the noise among Figure 25 and Figure 26 is set at the measurement range of phonometer 0～20000Hz, calculates from the measured value that every octave band is measured.
As shown in figure 25, if sound absorption materials 155 and sound absorption materials 156 are installed, compare with the situation of sound absorption materials 156 with sound absorption materials 155 is not installed, the noise in the time of central frequency can being 800Hz reduces about 2.5dBA, the OA value can be reduced about 0.7dBA.Its result can reduce to ride near the noise the ear of the driver on the driver's seat 107.
As shown in figure 26, if sound absorption materials 155 is installed on center pillar CP, the spectrum value of the noise when can be with 800Hz above reduces 0.5dBA, can will ride near the OA value minimizing 0.5dBA of the noise the ear of the driver on the driver's seat 107.Thus, by sound absorption materials 155 is installed, can reduce near the noise of ear that rides in the driver on the driver's seat 107 effectively by the little sound absorption materials 155 of enough areas on center pillar CP.
And, by sound absorption materials 155 being installed on the center pillar CP and sound absorption materials 156 being installed on interior top 133, the spectrum value of the noise when can be with 800Hz above further reduces 0.2dBA, can be with the further minimizing 0.2dBA of the OA value that rides near the noise the ear of the driver on the driver's seat 107.Thus, by sound absorption materials 156 is installed, can reduce to ride near the noise of ear of the driver on the driver's seat 107 more effectively on interior top 133.
By sound absorption materials 155 is installed on center pillar CP, sound absorption materials 156 is installed on interior top 133, with on the ground of seat floor board 130B and the bottom of back glass 119 situation that base plate sheet material 160 is installed compare, the spectrum value of the noise when can be with 800Hz above reduces 0.4dBA, can will ride near the OA value minimizing 0.4dBA of the noise the ear of the driver on the driver's seat 107.
As shown in figure 26, the spectrum value of noise reduces identical numerical value with the OA value, limit except the soniferous influence of solid below about 600Hz that will transmit by cabin 108 because of the resonance of floor board 130 etc. spectrum value that measurement range measures, with do not limit the OA value that measurement range measures and do not have difference, can confirm that the noise reduction of sound absorption materials 155,156 has obtained performance.
Its result, can confirm: with as shown in figure 29 on the ground of seat floor board 130B and the situation of the big base plate sheet material 160 of the bottom erection space of back glass 119 compare, utilize the sound absorption materials 155 of small size and sound absorption materials 156 can reduce to ride near the ear of the driver on the driver's seat 107 noise effectively.
Installing on the center pillar CP under the situation of sound absorption materials 155, can confirm: the spectrum value of the noise when can be with 800Hz above reduces 0.5dBA, the OA value is reduced 0.5dBA, near the sound absorption materials 155 special noises of ear that ride in the driver on the driver's seat 107 that reduce effectively of the enough small sizes of energy.
In the above-described embodiment, show the example that on the post cover 150 of center pillar CP and interior top 133, forms the opening 153A of circular hole, but shape or structure as opening 153A, can take different shapes or structure, can be for example shown in Figure 27 (A), adopt the opening 153A of slit-shaped, also can for example shown in Figure 27 (B), adopt latticed opening 153A.
In the above-described embodiment, show on the post cover 150 of center pillar CP and interior top 133 example that peristome 153 is integrally formed, but for example also can adopt shown in Figure 28 (A), to be installed in the structure on the post cover 150 as the peristome 153 that miscellaneous part is made, also can adopt shown in Figure 28 (B), will be installed in the structure that sound absorption materials 155 is installed on the post cover 150, at the inside face 150A of post cover 150 (inside face of peristome 153) as the peristome 153 that miscellaneous part is made.
In the above-described embodiment, show the example that on the post cover 150 of center pillar CP, forms peristome 153, sound absorption materials 155 is installed, but also can be for example shown in Figure 28 (C), center pillar CP constituted post cover 150 is not set, and carry out direct perforate processing etc. on the center pillar main body 124 of square tube type and form peristome 124b constituting, sound absorption materials 155 is installed on this inside face 124A.
In the above-described embodiment, show the example that mounts sound absorption materials 155 at the inside face 150A of post cover 150, but also can be for example shown in Figure 28 (D), constitute the position installation sound absorption materials 155 that separates certain interval at inside face 150A from post cover 150, owing between inside face 150A and sound absorption materials 155, form the space, can further improve the sound-absorbing effect of sound absorption materials 155.And the method that sound absorption materials 155 is installed in the inside face 150A of post cover 150 is not limited to mount, and also can be different installation methods, for example can adopt by hard-wired methods of (not shown) screw thread such as pressing plates.
In the above-described embodiment, show the example that post cover 150 at center pillar CP forms peristomes 153 and sound absorption materials 155 is installed, but also can on different posts, form peristome 153 and sound absorption materials 155 is installed, for example also can on front pillar 123 or rear pillar 125, form peristome (not shown) and sound absorption materials (not shown) is installed.
In the above-described embodiment; show post cover 150 at center pillar CP, and in formation the peristome 153 and example of sound absorption materials 155,156 is installed on the top 133; but also can in center pillar CP reaches, form peristome on the interior dress face beyond the top 133 and sound absorption materials is installed, for example also can on control box 140, protective case 147, middle cover 148, Steering wheel covers 149 etc., form peristome (not shown) and sound absorption materials (not shown) is installed.And, also can constitute, the cover (not shown) different with the inside components of both having deposited of control box 140 grades is set in the dead band in cabin 108 (for example the peripheral part of the driver's seat 107 of seat plate panel 130B etc.), on this cover, form peristome, and sound-absorbing member is installed in the inner surface side of peristome, and by such structure, the inside components that can both deposit without design modification etc., and effective dead band that utilizes in cabin 108 can reduce the noise in the cabin 108 simultaneously.
In the above-described embodiment, show the example that forms peristome 153 at the rear portion on interior top 133 and sound absorption materials 156 is installed, but also can form peristome 153 and sound absorption materials 156 is installed at the diverse location on interior top 133, for example by form peristome 153 and sound absorption materials 156 be installed in the left and right sides portion of the front and back on interior top 133 central portion, can reduce effectively the ear that rides in the driver on the driver's seat 107 about the noise of top.
In the above-described embodiment, as sound absorption materials 155, show the example of employing by the spongiform foamed materials of the material of polyethylene kind, but also can adopt the sound absorption materials of unlike material, for example can adopt the sound absorption materials (not shown) of the sound absorption materials of material of polyesters or felts or urethanes etc.
An example of the driving vehicle in conduct band cabin in this specification sheets, show trac., but so long as the driving vehicle in band cabin, even different driving vehicle, also can similarly be suitable for, for example, also can similarly be applicable in the agriculture working, the Commercial Motor Vehicle of building of combination machine etc. with Operation Van, Operation Van for building, manned vehicle, truck etc.
Claims (10)
1. driving vehicle with the cabin,
Possess:
Be bearing in the car body on a plurality of wheels;
Be bearing in the cabin carriage on the above-mentioned car body;
Be configured between above-mentioned cabin and the above-mentioned cabin carriage, the elastomeric element in the above-mentioned cabin of supporting;
The enforcement vehicle in this band cabin is characterised in that,
Has the weight member on the plate-shaped member that is installed in above-mentioned cabin.
2. the driving vehicle in band as claimed in claim 1 cabin is characterized in that, above-mentioned plate-shaped member is one of the floor board in above-mentioned cabin and rear guard.
3. the driving vehicle in band as claimed in claim 1 cabin is characterized in that, above-mentioned weight member utilizes bolt to be installed on the above-mentioned plate-shaped member via vibration-proof rubber.
4. the driving vehicle in band as claimed in claim 3 cabin is characterized in that, is provided with the cartridge with above-mentioned plate-shaped member butt between above-mentioned weight member and above-mentioned bolt.
5. as the driving vehicle in any described band cabin of claim 1～4, it is characterized in that above-mentioned weight member is set to, order is moved to the low frequency direction by this weight member is installed as the peak value of the vibration acceleration of the function of frequency.
6. the driving vehicle in band of the present invention cabin is characterized in that possessing:
Be bearing in the car body on a plurality of wheels, above-mentioned car body supports above-mentioned cabin;
Be configured on the part of medial surface in above-mentioned cabin, be formed with the peristome of a plurality of openings;
Be configured in the sound absorption materials of the inner surface side of the medial surface that possesses above-mentioned peristome.
7. the driving vehicle in band as claimed in claim 6 cabin is characterized in that, above-mentioned peristome is formed on the post (pillar) of the cabin framework that constitutes above-mentioned cabin.
8. as the driving vehicle in claim 6 or 7 described band cabins, it is characterized in that above-mentioned peristome is formed on the rear portion on the interior top (inner roof) in above-mentioned cabin.
9. as the driving vehicle in claim 6 or 7 described band cabins, it is characterized in that, above-mentioned a plurality of peristomes have the following diameter of 5mm separately, the opening of adjacency sets with the state that staggers in the horizontal direction up and down.
10. the driving vehicle in band as claimed in claim 7 cabin is characterized in that, above-mentioned peristome is formed on the above-mentioned post set on the side that is arranged on the driver's seat in the above-mentioned cabin.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-104966 | 2007-04-12 | ||
| JP2007104966A JP5124157B2 (en) | 2007-04-12 | 2007-04-12 | Traveling vehicle with cabin |
| JP2007107189A JP5022089B2 (en) | 2007-04-16 | 2007-04-16 | Traveling vehicle with cabin |
| JP2007-107189 | 2007-04-16 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110148992.9A Division CN102295027B (en) | 2007-04-12 | 2008-03-28 | Vehicle with a cabin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101284549A true CN101284549A (en) | 2008-10-15 |
| CN101284549B CN101284549B (en) | 2011-08-03 |
Family
ID=39983243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100874804A Active CN101284549B (en) | 2007-04-12 | 2008-03-28 | Vehicle with cabin |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5124157B2 (en) |
| CN (1) | CN101284549B (en) |
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| CN104074905A (en) * | 2014-06-23 | 2014-10-01 | 刘刚凌 | Sound insulation device of automotive damper |
| CN106470876A (en) * | 2014-06-26 | 2017-03-01 | 洋马株式会社 | Working truck |
| CN107074299A (en) * | 2015-05-28 | 2017-08-18 | 沙特基础工业全球技术公司 | Include the bulkhead of supporting construction harmony part |
| CN113978219A (en) * | 2021-11-25 | 2022-01-28 | 徐州市鑫宸泰汽车部件有限公司 | Shock-absorbing ceiling for pickup truck and using method thereof |
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| JP2015112880A (en) * | 2013-12-06 | 2015-06-22 | ヤンマー株式会社 | Roof structure of cabin |
| JP6318993B2 (en) * | 2014-09-01 | 2018-05-09 | トヨタ自動車株式会社 | Driving assistance device |
| JP6300696B2 (en) * | 2014-09-30 | 2018-03-28 | 株式会社クボタ | Working machine cabin and working machine equipped with this cabin |
| KR102494117B1 (en) * | 2020-06-19 | 2023-01-31 | 두산산업차량 주식회사 | Noise reduction apparatus and work vehilce having the same |
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| CN104074905A (en) * | 2014-06-23 | 2014-10-01 | 刘刚凌 | Sound insulation device of automotive damper |
| CN106470876A (en) * | 2014-06-26 | 2017-03-01 | 洋马株式会社 | Working truck |
| CN107074299A (en) * | 2015-05-28 | 2017-08-18 | 沙特基础工业全球技术公司 | Include the bulkhead of supporting construction harmony part |
| CN107074299B (en) * | 2015-05-28 | 2019-06-28 | 沙特基础工业全球技术公司 | Bulkhead including support construction harmony component |
| CN113978219A (en) * | 2021-11-25 | 2022-01-28 | 徐州市鑫宸泰汽车部件有限公司 | Shock-absorbing ceiling for pickup truck and using method thereof |
| CN113978219B (en) * | 2021-11-25 | 2023-01-06 | 徐州云陌机械科技有限公司 | Shock-absorbing ceiling for pickup truck and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101284549B (en) | 2011-08-03 |
| JP5124157B2 (en) | 2013-01-23 |
| JP2008260432A (en) | 2008-10-30 |
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