JPH0771883A - Loading apparatus for refractory testing furnace - Google Patents
Loading apparatus for refractory testing furnaceInfo
- Publication number
- JPH0771883A JPH0771883A JP24372593A JP24372593A JPH0771883A JP H0771883 A JPH0771883 A JP H0771883A JP 24372593 A JP24372593 A JP 24372593A JP 24372593 A JP24372593 A JP 24372593A JP H0771883 A JPH0771883 A JP H0771883A
- Authority
- JP
- Japan
- Prior art keywords
- frame
- holding frame
- loading
- rail member
- furnace
- 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.)
- Granted
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、梁や柱等の建造物用鉄
骨の耐火試験炉に組み付けられる載荷装置の改良に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a loading device to be assembled in a fireproof test furnace for steel frames for buildings such as beams and columns.
【０００２】[0002]
【従来の技術】従来、梁や柱等の建造物用鉄骨（Ｈ型鋼
など）の耐火試験炉として、鉄骨に一定の静荷重を加え
た状態のもとで耐火性能試験が行える載荷装置付き耐火
試験炉が使用されている。図５に、耐火試験炉用載荷装
置の一例を示す。図５において、１は作業床面下に設け
られた耐火試験炉の炉体、２は炉体の蓋板、３は炉体の
支持基盤、４は炉体の両側部位にて基盤上にそれぞれ立
設された持受柱体、５は両持受柱体４，４間に掛け渡し
た門型の持受枠体、６は持受枠体５を持受柱体４，４に
結合するボルト・ナットよりなる締付具、７は門型持受
枠体の中央部位に設けられた油圧式載荷用ジャッキであ
る。2. Description of the Related Art Conventionally, as a fire resistance test furnace for building steel frames (H-shaped steel etc.) such as beams and columns, a fire resistance with a loading device that can perform a fire resistance performance test under a condition where a constant static load is applied to the steel frame. A test furnace is being used. FIG. 5 shows an example of the loading device for the fireproof test furnace. In FIG. 5, 1 is a furnace body of a refractory test furnace provided under the work floor surface, 2 is a cover plate of the furnace body, 3 is a support base of the furnace body, 4 is both sides of the furnace body on the base, respectively. Standing support pillars, 5 are gate-shaped support frames that are bridged between the support pillars 4 and 4, and 6 are bolts that connect the support frame 5 to the support pillars 4 and 4. The fastener 7 is a nut, and 7 is a hydraulic loading jack provided in the central portion of the portal holding frame.
【０００３】図５で、Ｈ型梁鉄骨の載荷状態での耐火試
験例を示している。Ａは炉体１の上面開口の両側部位に
掛け渡されたＨ型梁鉄骨であり、この梁鉄骨の長さ方向
のほぼ中心部位に前記載荷用油圧ジャッキ７を作用させ
ることで、梁鉄骨への載荷状態（曲げ荷重）での耐火性
能試験が行われる。この場合、前記持受枠体４および持
受枠体５は載荷時の反力受け構体となる。Ｈ型柱鉄骨の
場合には、それに見合わせた高さの炉体を用い、炉体内
に柱鉄骨を立て、載荷用油圧ジャッキを柱鉄骨の上端面
に作用させることで、柱鉄骨への載荷状態（圧縮荷重）
での耐火性能試験が行われる。FIG. 5 shows an example of a fire resistance test with an H-beam steel frame in a loaded state. Reference symbol A denotes an H-shaped beam steel frame that is bridged to both sides of the upper surface opening of the furnace body 1. By applying the above-described loading hydraulic jack 7 to the beam steel frame at approximately the central portion in the length direction of the beam steel frame, The fire resistance performance test under the loaded condition (bending load) is performed. In this case, the holding frame 4 and the holding frame 5 serve as a reaction force receiving structure during loading. In the case of H-shaped column steel frame, use a furnace body of a height corresponding to it, stand the column steel frame in the furnace body, and let the hydraulic jack for loading act on the upper end surface of the column steel frame to load the column steel frame. (Compressive load)
Fire resistance performance test is conducted.
【０００４】[0004]
【発明が解決しようとする課題】上記構成の載荷装置を
使用してＨ型鉄骨の耐火試験を行う場合、ボルト・ナッ
トによる締付具６を取外し、載荷用油圧ジャッキ７等の
部材を有する持受枠体５を炉体上から他の場所に移動さ
せ、鉄骨を炉体内にセットしたあと、再び持受枠体５を
元に戻し、締付具６で持受柱体４側に結合させて載荷で
きる状態とする。しかし、前記持受枠体７は、前述した
ように、載荷時の反力受け構体とするため、鉄骨材で堅
牢に組み立てられ、その重さは５〜６トン近い重量物で
あることから、クレーン等を使用して移動させている。
したがって、前記構成の載荷装置を使用して耐火試験を
行う場合、前記持受枠体の分離および結合作業に多大の
時間と労力を要するのみならず、持受枠体をクレーンに
より移動させる危険な作業を伴う。When a fire resistance test of an H-shaped steel frame is performed using the loading device having the above-described structure, the fastener 6 made up of bolts and nuts is removed, and a holding member such as a loading hydraulic jack 7 is provided. After moving the receiving frame body 5 from the furnace body to another place and setting the steel frame in the furnace body, the holding frame body 5 is returned to the original position, and the holding frame body 5 is connected to the holding pillar body 4 side by the fastener 6 for loading. Ready However, since the holding frame 7 is a reaction force receiving structure at the time of loading as described above, it is robustly assembled with the iron aggregate and the weight thereof is close to 5 to 6 tons. Etc. are used to move.
Therefore, when performing a fire resistance test using the loading device having the above-mentioned configuration, not only a great amount of time and labor are required for the separation and connection work of the holding frame, but also dangerous work of moving the holding frame by a crane. Accompany.
【０００５】[0005]
【発明の目的】本発明は、上述した問題を解消するため
になされたものであって、載荷時の反力受けとなる大き
な重量の持受枠体をクレーン等を使用することなく短時
間に安全、かつ円滑に移動させることができ、載荷位置
に戻した持受枠体を手早く結合させることのできる載荷
装置を提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is possible to secure a large-weight holding frame for receiving a reaction force during loading in a short time without using a crane or the like. It is an object of the present invention to provide a loading device that can be smoothly moved and can quickly combine the holding frame members returned to the loading position.
【０００６】[0006]
【課題を解決するための手段】本発明による載荷装置
は、炉体の両側部位に並行に設置されたレール部材と、
載荷に必要な部材を備え、前記レール部材上に移動可能
に載置された持受枠体と、前記持受枠体に対して回動支
点となる支軸を有し、かつ前記レール部材上を走行させ
る車輪を支持するフレーム部材と、前記フレーム部材を
前記支軸を支点として回動させ、フレーム部材に支持さ
れた車輪をレール部材に押圧させ、その押圧時の反力作
用で前記支軸を持ち上げて持受枠体を浮上させ、その浮
上持受枠体を前記車輪によりレール部材に移動可能な状
態にするための操作手段と、前記車輪を駆動する電動機
と、前記持受枠体をレール部材に結合させるための締付
具を持受枠体の移動に拘らず、持受枠体に随伴させる案
内手段とを備えていることを要旨としている。A loading apparatus according to the present invention comprises rail members installed in parallel on both sides of a furnace body,
It has a member necessary for loading, has a holding frame that is movably mounted on the rail member, and a spindle that serves as a rotation fulcrum with respect to the holding frame, and runs on the rail member. A frame member supporting a wheel to be rotated, and the frame member is rotated about the supporting shaft as a fulcrum to press the wheel supported by the frame member against the rail member, and the supporting shaft is lifted by a reaction force at the time of the pressing. The holding frame to float, and the floating holding frame is moved to the rail member by the wheel, operation means for driving the wheel, an electric motor for driving the wheel, and the holding frame to the rail member. The gist of the present invention is to provide guide means for accommodating the fastening tool for moving the receiving frame body regardless of the movement of the receiving frame body.
【０００７】[0007]
【作用】上記構成によれば、載荷用ジャッキ等を支持す
る持受枠体を、クレーン等を用いることなく、炉内への
鉄骨の搬入に邪魔にならない場所に円滑に移動させるこ
とができる。また、前記持受枠体に締付具が随伴されて
いるので、持受枠体とレール部材との分離および結合作
業の短縮化が可能となる。According to the above construction, the holding frame for supporting the loading jack and the like can be smoothly moved to a place where it does not interfere with the loading of the steel frame into the furnace without using a crane or the like. Further, since the holding frame is accompanied by the fastener, it is possible to shorten the work of separating and connecting the holding frame and the rail member.
【０００８】[0008]
【実施例】図１〜図４に、本発明の一実施例を示す。本
実施例は、Ｈ型梁鉄骨の耐火試験炉の例である。同図に
おいて、１１は耐火試験炉の炉体、１２は炉出入口、１
３は支点台、１４，１４は炉体の左右外側に並行に配設
された主レール部材、１５，１５は各主レール部材を接
続する副レール部材であって、主・副レール部材１４，
１５は共に上面に開口する逆Ｔ字形の溝１４ａ，１５ａ
を有している。主レール部材１４は、後述する載荷時の
反力受けとして使用されるもので、支柱１６および支持
梁１７により強固に支持されている。１４ｂ，１５ｂは
レール部材の端部に設けられたストッパである。1 to 4 show an embodiment of the present invention. The present embodiment is an example of a fire-resistant test furnace for H-shaped beam steel. In the figure, 11 is the furnace body of the fireproof test furnace, 12 is the furnace entrance and exit, and 1
3 is a fulcrum stand, 14 and 14 are main rail members arranged in parallel on the left and right outer sides of the furnace body, and 15 and 15 are sub-rail members that connect the main rail members.
Reference numeral 15 is an inverted T-shaped groove 14a, 15a, both of which open on the upper surface.
have. The main rail member 14 is used as a reaction force receiver during loading described later, and is firmly supported by the column 16 and the support beam 17. 14b and 15b are stoppers provided at the ends of the rail member.
【０００９】Ｂは前記主・副レール部材１４，１５上を
移動可能に載置された載荷用持受枠体であり、左右のレ
ール部材上にそれぞれ立ち上がる側枠部１８，１８と、
両側枠部を連結する水平枠部１９とで門型に構成され、
水平枠部１９に載荷用油圧ジャッキ２０、球面接手２
１、曲げ治具２２、耐圧盤２３等が組付けられている。
２４はバランスウエイトであり、プーリ２５に掛け渡し
たロープ２６を介して前記曲げ治具２２を含む載荷用部
材の総重量に釣り合わされ、初期載荷重を零となるよう
にしている。Reference numeral B denotes a loading carrying frame which is movably mounted on the main / sub rail members 14 and 15, and side frame portions 18 and 18 which stand up on the left and right rail members, respectively.
It is configured in a gate shape with the horizontal frame part 19 that connects both side frame parts,
Hydraulic jack 20 for loading and spherical joint 2 on the horizontal frame portion 19
1, a bending jig 22, a pressure board 23, etc. are assembled.
Reference numeral 24 denotes a balance weight, which is balanced with the total weight of the loading member including the bending jig 22 via a rope 26 hung on a pulley 25 so that the initial loading load becomes zero.
【００１０】前記載荷用持受枠体Ｂの側枠部１８，１８
の前後には、フレーム部材２７が支軸２８を支点として
それぞれ回動自在に支持されている。フレーム部材２７
には、前記主・副レール部材１４，１５上を走行させる
車輪２９が支持され、さらに側枠部１８の端面と対向す
る部位に油圧ジャッキ３０が設けられ、ジャッキ３０の
ピストンが側枠部１８の端面を押圧した際の反力作用に
より、フレーム部材２７は、図２に示すように、支軸２
８を支点として矢印Ｐの方向に回動し、車輪２９がレー
ル部材面を押圧し、その押圧反力作用で支軸２８が持ち
上げられ、それに伴い側枠部１８はレール部材面から浮
上され、持受枠体Ｂは移動可能な状態におかれる。The side frame portions 18, 18 of the cargo holding frame body B described above.
A frame member 27 is rotatably supported in front of and behind the support shaft 28 as a fulcrum. Frame member 27
Is supported by wheels 29 running on the main / sub rail members 14 and 15, and a hydraulic jack 30 is provided at a portion facing the end face of the side frame portion 18, and a piston of the jack 30 has a piston of the side frame portion 18. As shown in FIG. 2, the frame member 27 is moved by the reaction force when the end surface of the support shaft 2 is pressed.
8 rotates in the direction of arrow P with the fulcrum as a fulcrum, the wheel 29 presses the rail member surface, and the supporting shaft 28 is lifted by the pressing reaction force, and the side frame portion 18 is floated from the rail member surface accordingly. The holding frame B is placed in a movable state.
【００１１】前記側枠部１８の前後の各フレーム部材２
７にそれぞれ支持された車輪２９のうち、一方の車輪２
９は電動機３１で駆動される駆動車輪となっており、前
記持受枠体Ｂを浮上させたあと、車輪を駆動することに
より、持受枠体Ｂをレール部材上で移動させることがで
きる。Each frame member 2 before and after the side frame portion 18
One of the wheels 29 supported by 7
Reference numeral 9 is a drive wheel driven by the electric motor 31. After the supporting frame B is levitated, the supporting frame B can be moved on the rail member by driving the wheel.
【００１２】前記主・副レール部材１４，１５に形成さ
れた逆Ｔ字形の溝１４ａ，１５ａは、図３〜図４に示す
ように、ボルト３２の頭部側を抜け出ないように摺動自
在に案内する溝とされており、ボルト３２の先端は、側
枠部１８を形成している天板１８ａの孔から外部に出さ
れ、そこにナット３３が螺装されている。したがって、
この構成により、載荷用持受枠体Ｂの側枠部１８がレー
ル部材に載置されているとき、ナット３３を外部からス
パナ等の工具により締め付けるれことにより、側枠部１
８をレール部材に固く結合させることができる。その場
合、ナット３３の締め付け時にボルト３２を回動しない
ように保持する回り止め手段として、前記レール部材の
溝１４ａ，１５ａ内におかれるボルト頭部の側面を溝内
面に当接させ、ボルトとの回り止めとしている。As shown in FIGS. 3 to 4, the inverted T-shaped grooves 14a and 15a formed in the main and auxiliary rail members 14 and 15 are slidable so as not to come out from the head side of the bolt 32. The tip of the bolt 32 is exposed from the hole of the top plate 18a forming the side frame portion 18, and the nut 33 is screwed therein. Therefore,
With this configuration, when the side frame portion 18 of the loading support frame B is placed on the rail member, the nut 33 is externally tightened by a tool such as a spanner, so that the side frame portion 1
8 can be rigidly connected to the rail member. In that case, as a detent means for holding the bolt 32 so as not to rotate when tightening the nut 33, the side surface of the bolt head placed in the groove 14a, 15a of the rail member is brought into contact with the inner surface of the groove, and It is a rotation stop.
【００１３】前記左右の側枠部１８をそれぞれレール部
材側に固く結合させるためのボルト３２は結合を強固に
するため、図示の例では複数本使用されている。上記耐
火試験炉で耐火試験を行う場合には、図１に示すよう
に、載荷用持受体Ｂを浮上状態にして前記車輪の駆動に
より、炉体１１から離れた場所に移動しておき、梁鉄骨
Ａを炉体の所定位置にセットし、載荷用開口部を有する
蓋体（図示してない）で炉の開口を塞ぐ。A plurality of bolts 32 for firmly connecting the left and right side frame portions 18 to the rail member side are used in the illustrated example in order to strengthen the connection. When carrying out a fire resistance test in the fire resistance test furnace, as shown in FIG. 1, the loading carrier B is floated and moved to a place away from the furnace body 11 by driving the wheels, The beam steel frame A is set at a predetermined position of the furnace body, and the opening of the furnace is closed by a lid (not shown) having a loading opening.
【００１４】次に、前記持受枠体Ｂを主レール部材１４
のところまで移動させ、浮上用油圧ジャッキ３０の側枠
部１８に対するピストンの押圧力を解除すると、持受枠
体Ｂはその自重により降下し、側枠部１８はレール部材
１４のレール面に載置され、同時にフレーム部材２７に
支持された車輪２９のレール部材面に対する押圧力も自
動的に解除される。Next, the holding frame B is attached to the main rail member 14
When the pressing force of the piston on the side frame portion 18 of the floating hydraulic jack 30 is released, the holding frame B is lowered by its own weight, and the side frame portion 18 is placed on the rail surface of the rail member 14. At the same time, the pressing force of the wheel 29 supported by the frame member 27 against the rail member surface is automatically released.
【００１５】ここで、側枠部１８に突出している複数本
のボルト３２の各ナット３３を締め付けて持受枠体Ｂを
主レール部材１４に固く結合することにより、載荷時の
反力受け構体とすることができる。このあと、載荷用油
圧ジャッキ３０を操作して鉄骨に曲げ荷重を与えた状態
で耐火試験を行うが、その耐火試験の説明は省略する。Here, the nuts 33 of the plurality of bolts 32 projecting from the side frame portion 18 are tightened to firmly connect the holding frame body B to the main rail member 14, thereby forming a reaction force receiving structure during loading. can do. After that, a fire resistance test is performed in a state where the loading hydraulic jack 30 is operated to apply a bending load to the steel frame, but the description of the fire resistance test is omitted.
【００１６】[0016]
【発明の効果】以上に述べたように、本発明によれば、
載荷時の反力受けとなる大きな重量の持受枠体をクレー
ン等を使用することなく短時間に安全、かつ円滑に移動
させることができるばかりでなく、載荷位置に戻した前
記持受枠体を基盤側の持受枠体に手早く結合させること
ができるから、載荷を同時に行う鉄骨の耐火試験炉の作
業上での安全性ならびに作業能率を大幅に改善すること
ができる。As described above, according to the present invention,
Not only can a large weight holding frame that receives reaction force during loading be moved safely and smoothly in a short time without using a crane, etc., but also the holding frame returned to the loading position Since it can be quickly connected to the holding frame on the side, the safety and work efficiency in the work of the fire-resistant test furnace for steel frames that are simultaneously loaded can be greatly improved.
【図１】本発明の一実施例を示す耐火試験炉用載荷装置
の斜視図である。FIG. 1 is a perspective view of a loading apparatus for a fireproof test furnace showing an embodiment of the present invention.
【図２】載荷装置の一部の拡大側面図である。FIG. 2 is an enlarged side view of a part of the loading device.
【図３】主レール部材の拡大斜視図である。FIG. 3 is an enlarged perspective view of a main rail member.
【図４】主レール部材と側枠部の結合構造部の断面図で
ある。FIG. 4 is a cross-sectional view of a joint structure portion of a main rail member and a side frame portion.
【図５】従来の耐火試験炉用載荷装置の正面図である。FIG. 5 is a front view of a conventional loading device for a fireproof test furnace.
１１ 炉体 １２ 炉出入口 １３ 鉄骨の支点台 Ａ Ｈ型梁鉄骨 １４ 主レール部材 １５ 副レール部材 １４ａ，１５ａ 逆Ｔ字形溝 １６ 支柱 １７ 支持梁 Ｂ 載荷用持受枠体 １８ 側枠部 １９ 水平枠部 ２０ 載荷用油圧ジャッキ ２１ 球面接手 ２２ 曲げ治具 ２３ 耐圧盤 ２４ バランスウエイト ２５ プーリ ２６ ロープ ２７ フレーム部材 ２８ 支軸 ２９ 車輪 ３０ 載荷用油圧ジャッキ ３１ 車輪駆動用電動機 ３２ ボルト ３３ ナット 11 furnace body 12 furnace entrance / exit 13 fulcrum stand of steel frame A H-shaped beam steel frame 14 main rail member 15 sub-rail member 14a, 15a inverted T-shaped groove 16 support column 17 support beam B loading frame 18 side frame section 19 horizontal frame section 20 Loading hydraulic jack 21 Spherical joint 22 Bending jig 23 Pressure plate 24 Balance weight 25 Pulley 26 Rope 27 Frame member 28 Spindle 29 Wheel 30 Loading hydraulic jack 31 Wheel driving electric motor 32 Bolt 33 Nut
Claims (3)
ル部材と、載荷に必要な部材を備え、前記レール部材上
に移動可能に載置された持受枠体と、前記持受枠体に対
して回動支点となる支軸を有し、かつ前記レール部材上
を走行させる車輪を支持するフレーム部材と、前記フレ
ーム部材を前記支軸を支点として回動させ、フレーム部
材に支持された車輪をレール部材に押圧させ、その押圧
時の反力作用で前記支軸を持ち上げて持受枠体を浮上さ
せ、その浮上持受枠体を前記車輪によりレール部材に移
動可能な状態にするための操作手段と、前記車輪を駆動
する電動機と、前記持受枠体をレール部材に結合させる
ための締付具を持受枠体の移動に拘らず、持受枠体に随
伴させる案内手段とを備えていることを特徴とする耐火
試験炉用載荷装置。1. A holding frame body movably mounted on the rail member, comprising rail members installed in parallel on both sides of the furnace body, and members necessary for loading, and the holding frame body. A frame member having a support shaft serving as a rotation fulcrum for supporting a wheel traveling on the rail member, and a wheel supported by the frame member by rotating the frame member about the support shaft as a fulcrum. Means for pressing the rail member to the rail member, and lifting the supporting shaft by the reaction force at the time of pressing to lift the holding frame body, and the floating holding frame body can be moved to the rail member by the wheel. And an electric motor that drives the wheels, and a guide unit that causes the holding frame to accompany the holding tool for connecting the holding frame to the rail member regardless of movement of the receiving frame. Characteristic loading device for fireproof test furnace.
圧ジャッキを設け、この油圧ジャッキで持受枠体を押圧
させた際の反力作用でフレーム部材を回動させる構成と
した請求項１に記載の耐火試験炉用載荷装置。2. The structure according to claim 1, wherein a hydraulic jack is provided on the frame member as the operation means, and the frame member is rotated by a reaction force when the holding frame is pressed by the hydraulic jack. Loading device for fireproof test furnace.
字形の溝を設け、この溝にボルト頭部を抜け出ないよう
に挿入し、ボルトの先端部を前記持受枠体の一部に挿通
して支持させ、それにナットを螺装した構成とした請求
項１に記載の耐火試験炉用載荷装置。3. The guide member is provided with a reverse T on a rail member.
A configuration in which a V-shaped groove is provided, the head of the bolt is inserted into the groove so as not to come out, the tip of the bolt is inserted into and supported by a part of the holding frame, and a nut is screwed into the groove. The loading device for a fireproof test furnace according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24372593A JP2614816B2 (en) | 1993-09-03 | 1993-09-03 | Loading device for refractory test furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24372593A JP2614816B2 (en) | 1993-09-03 | 1993-09-03 | Loading device for refractory test furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0771883A true JPH0771883A (en) | 1995-03-17 |
| JP2614816B2 JP2614816B2 (en) | 1997-05-28 |
Family
ID=17108066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24372593A Expired - Fee Related JP2614816B2 (en) | 1993-09-03 | 1993-09-03 | Loading device for refractory test furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2614816B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7959175B2 (en) | 2007-03-01 | 2011-06-14 | Toyota Jidosha Kabushiki Kaisha | Torsion beam suspension |
| CN104406806A (en) * | 2014-11-24 | 2015-03-11 | 三一重型装备有限公司 | Timbering machine test apparatus |
-
1993
- 1993-09-03 JP JP24372593A patent/JP2614816B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7959175B2 (en) | 2007-03-01 | 2011-06-14 | Toyota Jidosha Kabushiki Kaisha | Torsion beam suspension |
| CN104406806A (en) * | 2014-11-24 | 2015-03-11 | 三一重型装备有限公司 | Timbering machine test apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2614816B2 (en) | 1997-05-28 |
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