JP2001254778A - Vibration damping granular material - Google Patents
Vibration damping granular materialInfo
- Publication number
- JP2001254778A JP2001254778A JP2000076323A JP2000076323A JP2001254778A JP 2001254778 A JP2001254778 A JP 2001254778A JP 2000076323 A JP2000076323 A JP 2000076323A JP 2000076323 A JP2000076323 A JP 2000076323A JP 2001254778 A JP2001254778 A JP 2001254778A
- Authority
- JP
- Japan
- Prior art keywords
- granular material
- vibration damping
- specific gravity
- vibration
- irregularities
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000008187 granular material Substances 0.000 title claims abstract description 72
- 238000013016 damping Methods 0.000 title claims abstract description 29
- 230000005484 gravity Effects 0.000 claims abstract description 20
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 12
- 239000000057 synthetic resin Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 9
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 7
- 239000010937 tungsten Substances 0.000 claims abstract description 7
- 239000004677 Nylon Substances 0.000 claims abstract description 4
- 229920001778 nylon Polymers 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 description 8
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000012856 packing Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 241001247986 Calotropis procera Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 240000001980 Cucurbita pepo Species 0.000 description 1
- 235000009852 Cucurbita pepo Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Vibration Prevention Devices (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Glanulating (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は制振材に関する。特
に、鉄道車両用制振材に好適である。TECHNICAL FIELD The present invention relates to a vibration damping material. In particular, it is suitable for damping materials for railway vehicles.
【０００２】[0002]
【従来の技術】振動や騒音を低減させる手段として、粉
体，砂，鋼球を対象物に封入することが知られている。2. Description of the Related Art As means for reducing vibration and noise, it is known to enclose powder, sand and steel balls in an object.
【０００３】例えば、特開平１０−２６６３８８号公報
は、アルミハニカムパネルを用いた車体の床において、
パネルの内部に粒径３０μｍ〜１０００μｍの粉体を収
納させ、車体の床の上下方向の制振を図るものである。For example, Japanese Patent Application Laid-Open No. Hei 10-266388 discloses that a floor of a vehicle body using an aluminum honeycomb panel is
A powder having a particle size of 30 μm to 1000 μm is accommodated in the panel to control vibration in the vertical direction of the floor of the vehicle body.
【０００４】特開平６−３４１４５２号公報は、軸継手
の筒を覆う内カバーと外カバーを設け、その内外のカバ
ーの間に砂等の粒状体を入れている。Japanese Patent Laid-Open Publication No. Hei 6-341452 discloses an inner cover and an outer cover that cover a cylinder of a shaft coupling, and a granular material such as sand is inserted between the inner and outer covers.
【０００５】日本機械学会論文集６４巻６２５号（１９
９８−９）、Ｎｏ.９７−１５８０は、ベルトによって
回転するプーリ内に、ダンパマスと鋼球の粒子とを封入
している。ダンパマスは粒子群を介してプーリに摩擦結
合されている。The Transactions of the Japan Society of Mechanical Engineers, Vol. 64, No. 625 (19
No. 98-9) and No. 97-1580 enclose a damper mass and steel ball particles in a pulley rotated by a belt. The damper mass is frictionally coupled to the pulley via the particles.
【０００６】実開平４−７７０９２号公報は、流体の通
る配管の振動防止装置であり、粒状体を充填した筒体を
配管の外周面に固定したものである。Japanese Utility Model Application Laid-Open No. 4-77092 discloses an apparatus for preventing vibration of a pipe through which a fluid passes, in which a cylindrical body filled with granular material is fixed to the outer peripheral surface of the pipe.
【０００７】１９９９年９月３０日の読売新聞には、釣
りや散弾銃の鉛の代替え用の合成樹脂が示されている。
これはナイロン樹脂にタングステンなどの高比重金属を
配合し、射出成形したものが示されている。比重は１３
で、鉛よりも重い。[0007] The Yomiuri Shimbun on September 30, 1999 shows a synthetic resin for replacing lead in fishing and shotguns.
This shows that a high specific gravity metal such as tungsten is blended with a nylon resin and injection molded. Specific gravity is 13
And heavier than lead.
【０００８】[0008]
【発明が解決しようとする課題】我々の研究によると、
所要の制振効果を得るには対象物に対して相当の重量が
必要である。また、粉体よりも大きい方が効果が大であ
る。[Problems to be solved by the invention] According to our research,
To obtain the required vibration damping effect, a considerable weight is required for the object. In addition, the effect is greater when the size is larger than the powder.
【０００９】粒状体の総重量を大きくすることは装置の
大きさの増大を招くので、粒状体は比重の大きい材料が
望ましい。Since increasing the total weight of the granules increases the size of the apparatus, the granules are preferably made of a material having a large specific gravity.
【００１０】比重が大きく安価な物質は鉛である。しか
しながら、鉛は環境保護の観点から難点がある。An inexpensive substance having a large specific gravity is lead. However, lead has drawbacks in terms of environmental protection.
【００１１】本発明の目的は、一般に、環境に対して問
題がなく、かつ比重大きい制振用粒状体を提供すること
を目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a vibration-damping granule having no problem with respect to the environment and having a large specific gravity.
【００１２】[0012]
【課題を解決するための手段】本発明は、高比重の金属
の粉末を合成樹脂の材料に混ぜて成形することによって
制振用粒状体を構成することにより達成できる。The present invention can be attained by forming a granular material for vibration damping by mixing a high specific gravity metal powder with a synthetic resin material and molding the mixture.
【００１３】[0013]
【発明の実施の形態】本発明の一実施例を図１により説
明する。高比重の金属のタングステンの粉末をポリアミ
ド系の合成樹脂、例えば、ナイロン樹脂の材料に混ぜ
（ステップＦ１０）、加熱し、これを棒状に射出成形す
る（ステップＦ２０）。棒の直径は所望の粒状体の大き
さである。例えば、直径１mmの粒状体が所望であれば、
棒の大きさは１mmである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIG. A powder of a metal tungsten having a high specific gravity is mixed with a polyamide-based synthetic resin, for example, a nylon resin material (step F10), heated, and injection-molded into a rod shape (step F20). The diameter of the bar is the size of the desired granulate. For example, if a granular material having a diameter of 1 mm is desired,
The size of the bar is 1 mm.
【００１４】次に、この棒を長手方向に沿って長さ１mm
に切断する（ステップＦ３０）。この切断は射出成形し
た棒の軸心に直角に切断する必要はない。軸心に対して
斜めに切断することでよい。これはスクリュウー状の切
断機でできる。Next, the rod is lengthened by 1 mm along the longitudinal direction.
(Step F30). This cut need not be made at right angles to the axis of the injection molded rod. It may be cut at an angle to the axis. This can be done with a screw-shaped cutting machine.
【００１５】次に、この多数の粒状体をミキサーに入れ
て攪拌し、粒状体の角を丸くし、また、表面に凹凸を設
ける（ステップＦ４０）。これによって、凹凸を設ける
のは、円同士の接触ではなく、各部の接触によって振動
を運動エネルギーに変え易くするためである。Next, the plurality of granules are put into a mixer and stirred to round the corners of the granules and to provide irregularities on the surface (step F40). The reason for providing the unevenness is to facilitate the conversion of vibration into kinetic energy by contact of each part, not by contact between circles.
【００１６】このようにして得られた粒状体の比重は例
えば１３である。これは鉛の比重（１１.３）よりもは
るかに大きい。このため、制振装置の大きさを小さくで
きるものである。また、この制振装置が廃棄された場合
においても、鉛を用いていないので、環境上問題を発生
する可能性が少ない。なお、タングステンの比重は約１
９である。The specific gravity of the granular material thus obtained is, for example, 13. This is much higher than the specific gravity of lead (11.3). Therefore, the size of the vibration damping device can be reduced. Further, even when the vibration damping device is discarded, there is little possibility of causing an environmental problem because lead is not used. The specific gravity of tungsten is about 1
9
【００１７】この粒状体は、前記した文献の種々な用
途、例えば、床材，軸継手，プーリ，配管等の制振用に
使用できる。The granular material can be used for various applications described in the above-mentioned documents, for example, for damping floor materials, shaft couplings, pulleys, pipes and the like.
【００１８】粒状体の径は０.５mmから３mm程度が適当
と考えられる。前記ミキサーによって粒状体の表面に凹
凸を設けているので、制振装置として使用した場合、粒
状体の同士の接触面積が増加し、制振効果が増大する。It is considered appropriate that the diameter of the granular material is about 0.5 mm to 3 mm. Since the surface of the granular material is provided with irregularities by the mixer, when used as a vibration damping device, the contact area between the granular materials increases, and the vibration damping effect increases.
【００１９】射出成形のキャビテイーの面に凹凸を設
け、成形したら棒状の表面に凹凸が得られるようにす
る。これによれば、その後の凹凸を設ける作業を不要に
できるか、加工時間を少なくできる。凹凸は、棒状の軸
方向に対して直角方向の断面が多角形にすることによっ
て得られる。また、長手方向に沿って凹凸を設けること
によって得られる。Irregularities are provided on the surface of the cavity for injection molding so that irregularities can be obtained on the rod-like surface after molding. According to this, it is possible to eliminate the subsequent work of providing the unevenness or to reduce the processing time. The unevenness is obtained by making the cross section in the direction perpendicular to the axial direction of the rod into a polygon. Moreover, it can be obtained by providing irregularities along the longitudinal direction.
【００２０】粒状体は１つの球状である必要はない。１
つの制振装置内に複数の形状の粒状体があるとよい。複
数の形状とは、球状、前記のように凹凸を設けたもの、
ひょうたん状，多角形状等をいう。また、棒の切断長さ
は棒の直径よりも短くする方がミキサーで攪拌した場
合、球状になり易いと考えられる。The granulate need not be one spherical. 1
It is preferable that a plurality of shaped particles are provided in one vibration damping device. The plurality of shapes are spherical, those having irregularities as described above,
Gourd, polygonal, etc. In addition, it is considered that when the cut length of the rod is shorter than the diameter of the rod, the rod is likely to be spherical when stirred by a mixer.
【００２１】なお、粒状体が鉛の場合も、複数の形状が
良い。球形のものをミキサーで攪拌し、その表面に凹凸
を設けることができる。When the granular material is lead, a plurality of shapes are preferable. The spherical thing can be stirred with a mixer, and the surface can be made uneven.
【００２２】タングステンと合成樹脂とからなる粒状体
を鉄道車両用台車に適用した例を図２から図５によって
説明する。台車の台車枠１０は、走行方向に沿った２つ
の側梁１１と、両者を接続する２つの横梁１３とからな
る。横梁１３は牽引リンク３０を介して車体４０の下面
からから下方に突出させた部材４５（一般に中心ピンと
いう。）に連結している。台車枠１１の上面には車体４
０を支持する空気ばね４９を設置している。車輪２０を
有する車軸２１はばねを介して側梁１１を支持してい
る。An example in which a granular material made of tungsten and a synthetic resin is applied to a bogie for a railway vehicle will be described with reference to FIGS. The bogie frame 10 of the bogie includes two side beams 11 extending in the traveling direction and two horizontal beams 13 connecting the both. The cross beam 13 is connected via a traction link 30 to a member 45 (generally referred to as a center pin) protruding downward from the lower surface of the vehicle body 40. On the upper surface of the bogie frame 11, the vehicle body 4
0 is installed. An axle 21 having wheels 20 supports the side beam 11 via a spring.
【００２３】車軸２１を駆動する電動機３１および減速
機３２は、横梁１３に設置している。電動機３１と減速
機３２は軸継手６０を介して連結している。電動機３１
は横梁１３に設置した継手５０によって吊り下げられて
いる。An electric motor 31 and a speed reducer 32 for driving the axle 21 are installed on the cross beam 13. The electric motor 31 and the speed reducer 32 are connected via a shaft coupling 60. Electric motor 31
Is suspended by a joint 50 installed on the cross beam 13.
【００２４】減速機３２は、軸継手７０と吊り棒６０で
支持されている。吊り棒６０は減速機３２の入力軸３２
ｄ側を横梁１３に吊り下げるものである。減速機３２の
腕３２ｂと横梁１３の座６１とを吊り棒６０で連結して
いる。吊り棒６０と腕３２ｂ，座６１との間には緩衝ゴ
ムがある。減速機３２の入力軸３２ｄには小歯車が連結
されている。小歯車にかみ合う大歯車には車軸２１が連
結されている。The speed reducer 32 is supported by a shaft coupling 70 and a suspension rod 60. The hanging rod 60 is the input shaft 32 of the speed reducer 32.
The d side is hung on the cross beam 13. The arm 32b of the speed reducer 32 and the seat 61 of the cross beam 13 are connected by a hanging bar 60. There is a cushion rubber between the hanging bar 60, the arm 32b, and the seat 61. A small gear is connected to the input shaft 32d of the speed reducer 32. An axle 21 is connected to the large gear meshing with the small gear.
【００２５】電動機１４、その減速機および軸継ぎ手の
駆動系を振動源とした振動は、主としてリンク３０を介
して車体に伝達されるので、以下、リンク３０に振動対
策を施した例を説明する。Since vibrations originating from the electric motor 14, its speed reducer and the drive system of the shaft coupling are transmitted mainly to the vehicle body via the link 30, an example in which the link 30 is provided with a vibration countermeasure will be described below. .
【００２６】リンク３０の両端はゴムブッシュ３５，ピ
ン３６等を介して台車１１，連結部材２５に連結してい
る。連結部材２５の下端部の断面は逆Ｕ字状である。傾
斜部は車体の走行方向に沿っている。リンク３０は車体
の走行方向の水平方向に配置され、前記Ｕ字状の部分を
貫通している。リンク３０の中央部は筒３１である。筒
部３１は環状の継手３７に溶接している。筒部３１は内
容積を大きくするために、台車１０側の高さを大きくし
ている。台車１０側の筒部３１の幅は連結部材４５側の
幅、高さと同一である。筒部３１は高さが高い長円状で
ある。Both ends of the link 30 are connected to the carriage 11 and the connecting member 25 via rubber bushes 35, pins 36 and the like. The cross section of the lower end of the connecting member 25 is an inverted U-shape. The slope is along the running direction of the vehicle body. The link 30 is arranged in the horizontal direction of the running direction of the vehicle body, and penetrates the U-shaped portion. The center of the link 30 is a tube 31. The tubular portion 31 is welded to an annular joint 37. The cylindrical portion 31 has a larger height on the side of the bogie 10 in order to increase the internal volume. The width of the cylindrical portion 31 on the trolley 10 side is the same as the width and height on the connecting member 45 side. The cylindrical portion 31 has an elliptical shape with a high height.
【００２７】筒部３１の内部には種々の形状（大きさを
含む）の多数の粒状体８１を入れている。粒径は約１mm
である。一方の継手３７には筒部３１内に向けて穴があ
いている。継手３７，３７と筒部３１とを溶接し、熱処
理後、前記穴から粒状体８１を入れる。次に、ゴムブッ
シュ３５を挿入し、前記穴をふさぐ。A large number of granular bodies 81 of various shapes (including sizes) are placed inside the cylindrical portion 31. Particle size is about 1mm
It is. One joint 37 is provided with a hole toward the inside of the cylindrical portion 31. The joints 37 are welded to the tubular portion 31 and, after heat treatment, the granular material 81 is put through the hole. Next, the rubber bush 35 is inserted and the hole is closed.
【００２８】粒状体８１の充填密度は、小さいと減衰効
果が少なく、多すぎると粒状体の動きが悪くなり、制振
効果が少なくなる。充填密度は７０〜９５％程度が良
い。If the packing density of the granular material 81 is small, the damping effect is small, and if it is too large, the movement of the granular material is deteriorated, and the vibration damping effect is reduced. The packing density is preferably about 70 to 95%.
【００２９】充填密度について説明する。例えば、粒径
１mmの粒状体８１を実際に使用したいとき、この粒径１
mmの粒状体８１を対象の容器に満杯に詰め、このときの
重量を測定する。この状態が充填密度１００％である。
充填密度７０％とは、充填密度１００％の場合と同一の
粒状体８１を重量比で７０％入れた状態である。The packing density will be described. For example, when it is desired to actually use the granular material 81 having a particle size of 1 mm,
The target object container is filled with the granular material 81 of mm, and the weight at this time is measured. This state is a packing density of 100%.
The packing density of 70% is a state in which the same granular material 81 as in the case of the packing density of 100% is put in at a weight ratio of 70%.
【００３０】かかる構成によれば、駆動系の振動によっ
てリンク３０が振動すると、粒状体８１も振動し、粒状
体８１同士の衝突、筒部３１と粒状体８１との衝突によ
り、粒状体８１の摩擦抵抗が増加する。このため、リン
ク３０に発生した振動エネルギーは、粒状体８１の運動
エネルギーに変換される。このため、リンク３０での振
動が低減され、リンク３０の振動を吸収できる。また、
粒状体８１の比重が大きくなるに比例して、前記衝突の
際のリンク３０の振動エネルギーは、粒状体８１の運動
エネルギーに効率よく変換される。これにより振動エネ
ルギが小さくなり、リンク３０の振動を低減できる。こ
のため、リンク３０から車体側へ固体伝播される前後方
向の振動が低減される。したがって、車体床面の上下方
向の振動が低減され、床面から放射される車内騒音を低
減できる。According to such a configuration, when the link 30 vibrates due to the vibration of the drive system, the granular material 81 also vibrates, and the granular material 81 is violated by the collision between the granular materials 81 and between the cylindrical portion 31 and the granular material 81. Friction resistance increases. For this reason, the vibration energy generated in the link 30 is converted into the kinetic energy of the granular material 81. Therefore, the vibration at the link 30 is reduced, and the vibration of the link 30 can be absorbed. Also,
As the specific gravity of the granular material 81 increases, the vibration energy of the link 30 at the time of the collision is efficiently converted into the kinetic energy of the granular material 81. As a result, vibration energy is reduced, and vibration of the link 30 can be reduced. For this reason, the vibration in the front-rear direction transmitted through the link 30 to the vehicle body is reduced. Therefore, the vertical vibration of the vehicle body floor is reduced, and the vehicle interior noise radiated from the floor can be reduced.
【００３１】図４，図５のように、吊り棒６０の外周に
多数の粒状体８１を入れた容器９０を設置して、吊り棒
６０の振動を抑制することができる。吊り棒６０の外面
と容器９０の内面との間にゴムシート９９を配置してい
る。容器９０を半径方向に２分割し、容器９０のフラン
ジ同士をボルト・ナットで連結して、容器９０を吊り棒
６０に固定する。As shown in FIGS. 4 and 5, by installing a container 90 containing a large number of granules 81 around the hanging bar 60, vibration of the hanging bar 60 can be suppressed. A rubber sheet 99 is arranged between the outer surface of the hanging bar 60 and the inner surface of the container 90. The container 90 is divided into two parts in the radial direction, the flanges of the container 90 are connected to each other with bolts and nuts, and the container 90 is fixed to the hanging rod 60.
【００３２】なお、多数の粒状体を入れた容器を筒部３
１の外周に固定してもよい。また、車軸を受ける側梁１
３等に容器を設け、容器に多数の粒状体を封入し、振動
を低減することができる。この容器は側梁等の振動部の
外面または内面に設置する。また、台車と車体とを連結
する部材４５の内部の空間に粒状体を入れてもよい。ま
た、車軸を支える台車の部分に粒状体を充填することが
できる。また、電動機，減速機，軸継手等の振動発生部
の外部等に空間を設け、粒状体を封入する。The container containing a large number of granules is placed in the cylindrical portion 3.
1 may be fixed to the outer periphery. Also, a side beam 1 for receiving an axle
A container is provided at 3 or the like, and a large number of granular materials are sealed in the container to reduce vibration. This container is installed on the outer surface or inner surface of the vibrating part such as a side beam. Further, the granular material may be put in the space inside the member 45 connecting the carriage and the vehicle body. Further, the granular material can be filled in a part of the bogie supporting the axle. Further, a space is provided outside the vibration generating section such as an electric motor, a speed reducer, a shaft coupling, etc., and the granular material is sealed.
【００３３】ガラス繊維等の強化材を混ぜて成形し、粒
状体の振動による摩耗を少なくすることが考えられる。It is conceivable that a reinforcing material such as glass fiber is mixed and molded to reduce abrasion due to vibration of the granular material.
【００３４】タングステンと共に合成樹脂にベンガラを
混ぜて赤くし、回収を容易にすることが考えられる。It is conceivable that red water is mixed with synthetic resin together with tungsten to make the resin red, thereby facilitating recovery.
【００３５】合成樹脂の材料にタングステンの粉末を混
ぜ、粒状に射出成形することができる。また、凹凸を設
けたキャビテイーによって凹凸を設けた粒状体が得られ
る。Tungsten powder can be mixed with a synthetic resin material and injection-molded into granules. In addition, a granular material having irregularities provided by the cavity having irregularities can be obtained.
【００３６】高比重金属としてはタンタル（Ｔａ）が考
えられる。Tantalum (Ta) is considered as the high specific gravity metal.
【００３７】高比重金属を有する合成樹脂の粒状体にお
いて、この外周面に凹凸を設けると、制振効果が大きい
ことを説明した。これは直径１mmから３mmの球形の鉛の
外周面に凹凸を設けた場合でも同様の効果がある。球の
鉛をミキサーで攪拌することによって得られる。It has been described that, in the case of a synthetic resin granular material having a high specific gravity metal, if the outer peripheral surface is provided with irregularities, the vibration damping effect is large. This has the same effect even when irregularities are provided on the outer peripheral surface of a spherical lead having a diameter of 1 mm to 3 mm. Obtained by stirring ball lead with a mixer.
【００３８】本発明の技術的範囲は、特許請求の範囲の
各請求項に記載の文言あるいは課題を解決するための手
段の項に記載の文言に限定されず、当業者がそれから容
易に置き換えられる範囲にも及ぶものである。The technical scope of the present invention is not limited to the language described in each claim of the claims or the language described in the section of the means for solving the problems, and is easily replaced by those skilled in the art. It extends to a range.
【００３９】[0039]
【発明の効果】本発明によれば、環境に対して易しく、
比重大きい制振用粒状体を提供できる。According to the present invention, it is easy for the environment,
It is possible to provide a vibration-controlling granular material having a large specific gravity.
【図１】本発明の一実施例の制振用粒状体の製造方法の
フローチャートである。FIG. 1 is a flowchart of a method for manufacturing a vibration damping granular material according to an embodiment of the present invention.
【図２】本発明の一実施例の台車と車体との連結部の縦
断面図である。FIG. 2 is a longitudinal sectional view of a connecting portion between the bogie and the vehicle body according to one embodiment of the present invention.
【図３】台車の平面図である。FIG. 3 is a plan view of the cart.
【図４】図３のIV−IV断面図である。FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;
【図５】図４の水平断面図である。FIG. 5 is a horizontal sectional view of FIG. 4;
１０…台車枠、２０…車輪、２１…車軸、３１…電動
機、３２…減速機、７０…軸継手、８１…粒状体。Reference numeral 10: bogie frame, 20: wheels, 21: axle, 31: electric motor, 32: reduction gear, 70: shaft coupling, 81: granular material.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ２２Ｆ 1/00 Ｂ２２Ｆ 1/00 Ｒ Ｂ２９Ｂ 9/06 Ｂ２９Ｂ 9/06 Ｂ６１Ｆ 5/24 Ｂ６１Ｆ 5/24 Ｚ Ｈ // Ｂ２９Ｋ 77:00 Ｂ２９Ｋ 77:00 303:06 303:06 (72)発明者 平石 元実 山口県下松市大字東豊井794番地 株式会 社日立製作所笠戸事業所内 (72)発明者 中村 実 山口県下松市大字東豊井794番地 株式会 社日立製作所笠戸事業所内 Ｆターム(参考） 3J048 AA02 BA19 BD04 BF17 EA15 4F201 AA29 AB16 AC04 AE06 AE07 AF01 AH17 AH30 BA02 BC01 BC02 BC12 BC15 BC37 BD05 BL12 BL47 4G004 AA01 LA08 LA09 4K018 BA09 BA20 BB01 BB04 BD10 CA09 CA30 CA32 GA04 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B22F 1/00 B22F 1/00 R B29B 9/06 B29B 9/06 B61F 5/24 B61F 5/24 ZH // B29K 77:00 B29K 77:00 303: 06 303: 06 (72) Inventor Motomi Hiraishi 794, Higashi-Toyoi, Oaza, Kudamatsu-shi, Yamaguchi Pref. 794, Higashi-Toyoi, Kudamatsu City, Prefecture F-term in Kasado Office, Hitachi, Ltd. 4K018 BA09 BA20 BB01 BB04 BD10 CA09 CA30 CA32 GA04
Claims (13)
粉末を合成樹脂の材料に混ぜて成形したものであるこ
と、を特徴とする制振用粒状体。1. A granular material for vibration damping, characterized in that the granular material is formed by mixing a metal powder having a high specific gravity with a synthetic resin material.
ングステンであること、を特徴とする制振用粒状体。2. The granular material for vibration damping according to claim 1, wherein the metal having a high specific gravity is tungsten.
ンであること、を特徴とする制振用粒状体。3. The granular material for vibration damping according to claim 1, wherein said synthetic resin is nylon.
凸を有すること、を特徴とする制振用粒状体。4. The granular material for vibration damping according to claim 1, wherein the surface of the granular material has irregularities.
径は０.５mmから３mmであること、を特徴とする制振用
粒状体。5. The granular material for vibration damping according to claim 1, wherein a substantial diameter of the granular material is 0.5 mm to 3 mm.
ぜ、棒状に成形し、該棒状のものを長手方向に切断する
こと、を特徴とする制振用粒状体の製造方法。6. A method for producing a granular material for vibration damping, comprising mixing a metal powder having a high specific gravity with a synthetic resin material, forming the mixture into a bar, and cutting the bar in the longitudinal direction.
後、前記粒状体をミキサーで攪拌すること、を特徴とす
る制振用粒状体の製造方法。7. The method according to claim 6, wherein after cutting in the longitudinal direction, the granular material is stirred by a mixer.
ャビテイーに射出して前記棒状に成形すること、を特徴
とする制振用粒状体の製造方法。8. A method of manufacturing a granular material for vibration damping according to claim 7, wherein said rod is formed by injection into a cavity having an inner surface provided with irregularities.
ぜ、粒状に成形すること、を特徴とする制振用粒状体の
製造方法。9. A method for producing a granular material for vibration damping, which comprises mixing a metal powder having a high specific gravity with a synthetic resin material and forming the mixture into a granular form.
状体をミキサーで攪拌すること、を特徴とする制振用粒
状体の製造方法。10. The method for producing vibration damping granules according to claim 8, wherein the granules are agitated with a mixer after injection molding.
キャビテイーに射出して前記粒状に成形する、を特徴と
する制振用粒状体の製造方法。11. A method of manufacturing a granular material for vibration damping according to claim 8, wherein said granular material is injected into a cavity having an inner surface provided with irregularities and is formed into said granular material.
は凹凸を有すること、を特徴とする制振用粒状体。12. A granular material for vibration damping, wherein the granular material is made of lead, and the surface of the granular material has irregularities.
ること、を特徴とする制振用粒状体の製造方法。13. A method for producing a vibration-damping granule, comprising stirring a spherical lead granule with a mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000076323A JP2001254778A (en) | 2000-03-14 | 2000-03-14 | Vibration damping granular material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000076323A JP2001254778A (en) | 2000-03-14 | 2000-03-14 | Vibration damping granular material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001254778A true JP2001254778A (en) | 2001-09-21 |
Family
ID=18594083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000076323A Pending JP2001254778A (en) | 2000-03-14 | 2000-03-14 | Vibration damping granular material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001254778A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012036629A (en) * | 2010-08-06 | 2012-02-23 | Kobe Steel Ltd | Handrail and machine equipped with the same |
-
2000
- 2000-03-14 JP JP2000076323A patent/JP2001254778A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012036629A (en) * | 2010-08-06 | 2012-02-23 | Kobe Steel Ltd | Handrail and machine equipped with the same |
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