JP2020050294A - Starting wheel structure of endless track device - Google Patents
Starting wheel structure of endless track device Download PDFInfo
- Publication number
- JP2020050294A JP2020050294A JP2018184207A JP2018184207A JP2020050294A JP 2020050294 A JP2020050294 A JP 2020050294A JP 2018184207 A JP2018184207 A JP 2018184207A JP 2018184207 A JP2018184207 A JP 2018184207A JP 2020050294 A JP2020050294 A JP 2020050294A
- Authority
- JP
- Japan
- Prior art keywords
- endless track
- starting wheel
- track device
- fixed body
- wheel structure
- 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
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
Description
本発明は、無限軌道装置のスプロケット保持部構造に関する。 The present invention relates to a sprocket holding portion structure of a tracked device.
従来、建設機械などに設けられる無限軌道装置が知られている（例えば、特許文献１参照）。 2. Description of the Related Art Conventionally, an endless track device provided in a construction machine or the like is known (for example, see Patent Document 1).
無限軌道装置は、スプロケットを有し、油圧モータで駆動され、後端に位置する起動輪と、前端に位置する遊動輪と、転輪と、起動輪、遊動輪、転輪に巻き回された環状に連結されて構成された履板とを備える。遊動輪は、前後に移動可能に構成されて、環状に巻き回された履板の張り具合を調整することができる。 The endless track device has a sprocket, is driven by a hydraulic motor, and is wound around a starting wheel located at a rear end, a floating wheel located at a front end, a rolling wheel, a starting wheel, a floating wheel, and a rolling wheel. And a shoe plate that is configured to be connected in a ring shape. The idler wheel is configured to be movable back and forth, and can adjust the tension of the crawler board that is wound in an annular shape.
起動輪はスプロケットや履板などによって掻き上げられた土砂などが接触するため、起動輪の外周面が磨耗してボルト穴が破損し、本体フレームと起動輪とを固定する固定ボルトが露出してしまう虞がある。そこで、起動輪の外壁を厚く形成して耐磨耗性を向上させることが考えられるが起動輪の材料費がかさんで生産コストが増加してしまうという問題がある。 Since the starting wheel comes in contact with the earth and sand that has been scraped up by sprockets, footboards, etc., the outer peripheral surface of the starting wheel is worn and the bolt holes are damaged, and the fixing bolts that fix the body frame and the starting wheel are exposed. There is a possibility that it will end up. Therefore, it is conceivable to improve the wear resistance by forming the outer wall of the starting wheel to be thick, but there is a problem that the production cost is increased due to the increase in the material cost of the starting wheel.
本発明は、以上の点に鑑み、生産コストの増加を抑え、且つ耐磨耗性を向上させることができる無限軌道装置の起動輪構造を提供することを目的とする。 In view of the above points, an object of the present invention is to provide a starting wheel structure of a tracked device capable of suppressing an increase in production cost and improving wear resistance.
［１］上記目的を達成するため、本発明は、
環状に連結された履板と、
前記履板を駆動させる起動輪と、
を備える無限軌道装置の起動輪構造であって、
前記起動輪は、
前記履板と噛合うスプロケットと、
前記スプロケットを固定する回転体と、
前記回転体を回転自在に軸支するとともに本体フレームに固定される固定体と、
を備え、
前記固定体の外周壁の前記無限軌道装置の前記履板と前記スプロケットとが噛合う噛合領域側の少なくとも一部の肉厚が厚くなるように前記固定体が構成されていることを特徴とする。
[1] To achieve the above object, the present invention provides:
A footplate connected in a ring,
A starting wheel for driving the crawler,
The starting wheel structure of the endless track device comprising:
The starting wheel,
A sprocket meshing with the track plate,
A rotating body for fixing the sprocket;
A fixed body that rotatably supports the rotating body and is fixed to a main body frame,
With
The fixed body is configured such that at least a part of the outer peripheral wall of the fixed body on the side of the meshing region where the crawler plate of the endless track device and the sprocket mesh with each other is thickened. .
本発明によれば、固定体の外周壁を噛合領域側の少なくとも一部の肉厚が厚くなるように固定体を構成することにより、固定体を全周に亘って厚肉にした場合と比較して材料費が抑えられると共に、最も磨耗し易い噛合領域の耐磨耗性を向上させることができ、起動輪全体としても耐摩耗性を向上させることができる。 According to the present invention, by configuring the fixed body such that at least a part of the outer peripheral wall of the fixed body on the side of the engagement region is thickened, compared with a case where the fixed body is made thicker over the entire circumference. As a result, the material cost can be reduced, and the wear resistance of the meshing region where wear is most likely to occur can be improved, and the wear resistance of the entire starting wheel can be improved.
［２］また、本発明においては、前記固定体の外周壁の断面形状を前記噛合領域側と前記噛合領域側とは反対側の領域とで、前記無限軌道装置の進行方向に対して前後対称形状に構成することが好ましい。 [2] Also, in the present invention, the cross-sectional shape of the outer peripheral wall of the fixed body is symmetrical in the front-rear direction with respect to the traveling direction of the endless track device in the meshing region side and the region opposite to the meshing region side. It is preferable to configure the shape.
かかる構成によれば、固定体が前後対称形状となるため、無限軌道装置の左右の起動輪のどちらにも用いることができる。従って、左右別々の起動輪を製造する必要がなく、汎用性を高めて起動輪を車体フレームに取り付けるときに無限軌道装置の左右で誤って取り付けられることを防止することができる。 According to this configuration, since the fixed body has a symmetrical shape in the front-rear direction, the fixed body can be used for both the left and right starting wheels of the endless track device. Therefore, it is not necessary to manufacture the left and right starting wheels separately, and it is possible to improve versatility and prevent the starting wheels from being erroneously mounted on the left and right sides of the endless track device when the starting wheels are mounted on the vehicle body frame.
［３］また、本発明においては、前記固定体の外周壁の断面の前記噛合領域側を三日月形状としてもよい。 [3] Further, in the present invention, the meshing region side of the cross section of the outer peripheral wall of the fixed body may have a crescent shape.
かかる構成によれば、固定体の外周壁を噛合領域側の少なくとも一部の肉厚が厚くなるように固定体の噛合領域側を三日月形状とすることにより、固定体を全周に亘って厚肉にした場合と比較して材料費が抑えられると共に、最も磨耗し易い噛合領域の耐磨耗性を向上させることができ、起動輪全体としても耐摩耗性を向上させることができる。 According to this configuration, the fixed body has a crescent shape so that the outer peripheral wall of the fixed body has a crescent shape so that the thickness of at least a part of the fixed body on the side of the meshed area is increased. The material cost can be reduced as compared with the case of the meat, and the wear resistance of the meshing region where wear is most likely to occur can be improved, and the wear resistance of the entire starting wheel can be improved.
図を参照して、本発明の実施形態の無限軌道装置の起動輪構造を適用した車体としての建設機械を例に挙げて詳細に説明する。図１に示すように、本実施形態の建設機械１は、油圧ショベルであり、無限軌道２を有する走行体３と、走行体３の上に旋回自在に設けられた旋回体４と、を備える。 With reference to the drawings, a construction machine as a vehicle body to which the starting wheel structure of the endless track device of the embodiment of the present invention is applied will be described in detail as an example. As shown in FIG. 1, a construction machine 1 according to the present embodiment is a hydraulic shovel, and includes a traveling body 3 having an endless track 2 and a revolving body 4 that is pivotably provided on the traveling body 3. .
旋回体４には、前方左側に設けられた操作室５と、操作室５の後方に隣接させて設けられた機械室６と、を備える。機械室６には、図示省略した電動機又は内燃機関などの動力源と当該動力源によって駆動されるオイルポンプとが設けられている。建設機械１は、このオイルポンプが出力する油圧を利用して油圧モータを駆動し、油圧モータから出力される動力を利用して走行体３の無限軌道２を駆動させる。動力源は、ディーゼルエンジンであってもよいし、ガソリンエンジンであってもよいし、内燃機関と電動機の両方を利用するものであってもよい。 The revolving superstructure 4 includes an operation room 5 provided on the front left side and a machine room 6 provided adjacent to the rear of the operation room 5. The machine room 6 is provided with a power source such as an electric motor or an internal combustion engine (not shown) and an oil pump driven by the power source. The construction machine 1 drives the hydraulic motor using the hydraulic pressure output from the oil pump, and drives the endless track 2 of the traveling body 3 using the power output from the hydraulic motor. The power source may be a diesel engine, a gasoline engine, or may use both an internal combustion engine and an electric motor.
旋回体４の前方右側には、操作室５の横であって、機械室６の前方に位置させて作業機７の基端部が接続されている。 The base end of the working machine 7 is connected to the front right side of the revolving unit 4 at a position next to the operation room 5 and in front of the machine room 6.
作業機７は、基端が旋回体４に回動自在に連結されたブーム８と、ブーム８の先端に回動自在に基端部が連結されたアーム９と、アーム９の先端に回動自在に基端が連結されたバケット１０とを備える。ブーム８の中間部分には、旋回体４から延びるブーム用油圧シリンダのロッド１１ａの先端が連結されており、ブーム用油圧シリンダのロッド１１ａを進退させることによって、ブーム８が回動する。アーム９の基端には、ブーム８から延びるアーム用油圧シリンダ１２のロッド１２ａの先端が連結されており、アーム用油圧シリンダ１２のロッド１２ａを進退させることによって、アーム９が回動する。バケット１０の基端には、アーム９から延びるバケット用油圧シリンダ１３のロッド１３ａの先端がリンク１４を介して連結されており、バケット用油圧シリンダ１３のロッド１３ａを進退させることによって、バケット１０が回動する。 The work machine 7 includes a boom 8 whose base end is rotatably connected to the revolving unit 4, an arm 9 whose base end is rotatably connected to the distal end of the boom 8, and a rotatable end of the arm 9. And a bucket 10 whose base end is freely connected. The end of the rod 11a of the boom hydraulic cylinder extending from the revolving unit 4 is connected to the middle part of the boom 8, and the boom 8 is rotated by moving the rod 11a of the boom hydraulic cylinder forward and backward. The proximal end of the arm 9 is connected to the distal end of a rod 12a of an arm hydraulic cylinder 12 extending from the boom 8, and the arm 9 is rotated by moving the rod 12a of the arm hydraulic cylinder 12 forward and backward. The proximal end of the bucket 10 is connected via a link 14 to the distal end of a rod 13a of a bucket hydraulic cylinder 13 extending from the arm 9. By moving the rod 13a of the bucket hydraulic cylinder 13 forward and backward, the bucket 10 is moved. Rotate.
操作室５には、操作者が作業機７の回動、旋回体４の旋回、走行体３の走行を操作するための操作部（図示省略）が設けられている。 The operation room 5 is provided with an operation unit (not shown) for the operator to operate the rotation of the work machine 7, the rotation of the revolving unit 4, and the traveling of the traveling unit 3.
無限軌道２は、スプロケット２１ａを有し、油圧モータで駆動され、後端に位置する起動輪２１と、前端に位置する遊動輪２３と、転輪２５と、起動輪２１、遊動輪２３、転輪２５に巻き回された環状に連結されて構成された履板２７とを備える。遊動輪２３は、前後に移動可能に構成されて、環状に巻き回された履板２７の張り具合を調整することができる。 The endless track 2 has a sprocket 21a, is driven by a hydraulic motor, and has a starting wheel 21 located at a rear end, a floating wheel 23 located at a front end, a rolling wheel 25, a starting wheel 21, a floating wheel 23, And a crawler plate 27 wound around the wheel 25 and connected in an annular shape. The idler wheel 23 is configured to be able to move back and forth, and can adjust the tension of the crawler board 27 wound in an annular shape.
図２は、起動輪２１の要部を拡大して模式的に示す断面図である。起動輪２１は、履板２７と噛合うスプロケット２１ａ（図１参照）が連結される有底筒状の回転体３１と、回転体３１を回転自在に支えると共に、走行体３（車体側）に固定される固定体３３と、を備える。固定体３３の内部には、斜板式ピストンモータなどの油圧モータが設けられている。回転体３１の内部には、油圧モータの出力回転を減速させて回転体３１に伝達するための遊星歯車機構などからなる減速機構が設けられている。固定体３３は径方向外方へ張り出すフランジ３３ａが設けられ、フランジ３３ａには、雌ねじが切られたボルト穴３３ｂが穿設されている。 FIG. 2 is a cross-sectional view schematically showing an enlarged main part of the starting wheel 21. The starting wheel 21 includes a bottomed cylindrical rotating body 31 to which a sprocket 21a (see FIG. 1) meshing with the crawler plate 27 is connected, and the rotating body 31 is rotatably supported, and is mounted on the traveling body 3 (body side). And a fixed body 33 to be fixed. Inside the fixed body 33, a hydraulic motor such as a swash plate type piston motor is provided. A reduction mechanism including a planetary gear mechanism for reducing the output rotation of the hydraulic motor and transmitting the rotation to the rotation body 31 is provided inside the rotation body 31. The fixed body 33 is provided with a flange 33a that protrudes radially outward, and a bolt hole 33b with a female thread is formed in the flange 33a.
図３に示すように、ボルト穴が設けられた部分であるフランジ３３ａには、スプロケット２１ａと履板２７とが噛合う噛合領域に位置させて三日月形状の厚肉部３５が設けられている。 As shown in FIG. 3, a crescent-shaped thick portion 35 is provided on a flange 33 a, which is a portion provided with a bolt hole, in a meshing region where the sprocket 21 a and the shoe plate 27 mesh.
この厚肉部３５により、固定体を全周に亘って厚肉にした場合と比較して材料費が抑えられると共に、最も磨耗し易い噛合領域の耐磨耗性を向上させることができ、起動輪２１全体としても耐摩耗性を向上させることができる。 With the thick portion 35, the material cost can be reduced as compared with the case where the fixed body is made thick over the entire circumference, and the wear resistance of the engagement region where wear is most likely to occur can be improved. The wear resistance of the entire wheel 21 can be improved.
また、固定体３３のフランジ３３ａの外周壁の断面は、噛合領域側とは反対側の領域も三日月形状として厚肉部３５を無限軌道２の前方側にも配置し、無限軌道２の進行方向に対して前後対称の楕円形状としている。 Further, the cross section of the outer peripheral wall of the flange 33a of the fixed body 33 has a crescent shape in the region opposite to the meshing region side, and the thick portion 35 is also arranged on the front side of the endless track 2, so that the traveling direction of the endless track 2 Is an elliptical shape symmetrical with respect to the front and rear.
これにより、固定体３３が前後対称の楕円形状となるため、無限軌道２の左右の起動輪２１のどちらに用いることができる。従って、左右別々の起動輪を製造する必要がなく、汎用性を高めて起動輪２１を車体フレーム４１に取り付けるときに無限軌道２の左右で誤って取り付けられることを防止することができる。 Accordingly, the fixed body 33 has an elliptical shape that is symmetrical in the front-rear direction, and can be used for either of the left and right starting wheels 21 of the endless track 2. Therefore, it is not necessary to manufacture the left and right separate starting wheels, and it is possible to improve the versatility and prevent the starting wheels 21 from being erroneously mounted on the left and right sides of the endless track 2 when the starting wheels 21 are mounted on the body frame 41.
［他の実施形態］
図４は他の実施形態の起動輪２１を示している。図４に示すように、厚肉部３５の横断面を台形状に形成し、径方向外側へ向かうに従い次第に左右方向幅が狭くなるように構成してもよい。かかる構成によれば、更なる材料費の削減を図ることができる。
[Other embodiments]
FIG. 4 shows a starting wheel 21 according to another embodiment. As shown in FIG. 4, the cross section of the thick portion 35 may be formed in a trapezoidal shape, and the width in the left-right direction may be gradually reduced toward the outside in the radial direction. According to this configuration, it is possible to further reduce the material cost.
また、本実施形態においては建設機械を例に説明したが、本発明の無限軌道装置の起動輪構造を適用する車体は建設機械に限らず、他のものであってもよい。 Further, in the present embodiment, the construction machine has been described as an example, but the vehicle body to which the starting wheel structure of the endless track device of the present invention is applied is not limited to the construction machine, and may be another body.
また、本実施形態においては、三日月形状の厚肉部３５を前後対称となるように起動輪２１の前後に設けて楕円形状としたものを説明したが、噛合領域が存在する後側にのみ三日月形状の厚肉部３５を設けて、前側の厚肉部は設けなくてもよい。これによっても、「固定体を全周に亘って厚肉にした場合と比較して材料費が抑えられると共に、最も磨耗し易い噛合領域の耐磨耗性を向上させることができる」という本発明の作用効果を得ることができる。 Further, in the present embodiment, the crescent-shaped thick portion 35 is provided in front and rear of the starting wheel 21 so as to be symmetrical in the front-rear direction and is formed into an elliptical shape, but the crescent moon is provided only on the rear side where the engagement region exists. The thick portion 35 having the shape may be provided, and the thick portion on the front side may not be provided. This also allows the present invention to "reduce the material cost as compared with the case where the fixed body is made thicker over the entire circumference, and improve the wear resistance of the engagement region where wear is most likely to occur". The operation and effect of the present invention can be obtained.
また、厚肉部３５はボルト穴３３ｂに対応させて設ければよい。また、厚肉部３５は、固定体３３の外周壁と一体成形してもよく、又は厚肉部３５を備えた固定体３３とは別体の環状部材を固定体３３の外周面に圧入又はボルトで固定して一体化してもよい。 The thick portion 35 may be provided corresponding to the bolt hole 33b. In addition, the thick portion 35 may be formed integrally with the outer peripheral wall of the fixed body 33, or an annular member separate from the fixed body 33 having the thick portion 35 may be pressed into the outer peripheral surface of the fixed body 33 or pressed. It may be fixed by bolts and integrated.
また、本発明の固定体の外周壁の噛合領域側の断面形状は、三日月形状に限らず、噛合領域の少なくとも一部が厚肉に形成されていればよい。例えば、三角形状や台形状、連続する複数の円弧形状であってもよい。また、本発明の固定体の外周壁の噛合領域側の断面形状は、上下非対称に形成されていてもよい。 Further, the cross-sectional shape of the outer peripheral wall of the fixed body of the present invention on the side of the meshing region is not limited to the crescent shape, and it is sufficient that at least a part of the meshing region is formed to be thick. For example, the shape may be a triangle, a trapezoid, or a plurality of continuous arcs. Further, the cross-sectional shape of the outer peripheral wall of the fixed body of the present invention on the side of the meshing region may be formed vertically asymmetrically.
１ 建設機械
２ 無限軌道
３ 走行体
４ 旋回体
５ 操作室
６ 機械室
７ 作業機
８ ブーム
９ アーム
１０ バケット
１１ａ ロッド
１２ アーム用油圧シリンダ
１２ａ ロッド
１３ バケット用油圧シリンダ
１３ａ ロッド
１４ リンク
２１ 起動輪
２１ａ スプロケット
２３ 遊動輪
２５ 転輪
２７ 履板
３１ 回転体
３３ 固定体
３３ａ フランジ
３３ｂ ボルト穴
３５ 厚肉部
４１ 車体フレーム
４３ 固定ボルト
DESCRIPTION OF SYMBOLS 1 Construction machine 2 Endless track 3 Running body 4 Revolving unit 5 Operating room 6 Machine room 7 Work machine 8 Boom 9 Arm 10 Bucket 11a Rod 12 Hydraulic cylinder for arm 12a Rod 13 Bucket hydraulic cylinder 13a Rod 14 Link 21 Starting wheel 21a Sprocket 23 Idling wheel 25 Roller wheel 27 Footwear plate 31 Rotating body 33 Fixed body 33a Flange 33b Bolt hole 35 Thick part 41 Body frame 43 Fixing bolt
Claims (3)
前記履板を駆動させる起動輪と、
を備える無限軌道装置の起動輪構造であって、
前記起動輪は、
前記履板と噛合うスプロケットと、
前記スプロケットを固定する回転体と、
前記回転体を回転自在に軸支するとともに本体フレームに固定される固定体と、
を備え、
前記固定体の外周壁の前記無限軌道装置の前記履板と前記スプロケットとが噛合う噛合領域側の少なくとも一部の肉厚が厚くなるように前記固定体が構成されていることを特徴とする無限軌道装置の起動輪構造。 A footplate connected in a ring,
A starting wheel for driving the crawler,
The starting wheel structure of the endless track device comprising:
The starting wheel,
A sprocket meshing with the track plate,
A rotating body for fixing the sprocket;
A fixed body that rotatably supports the rotating body and is fixed to a main body frame,
With
The fixed body is configured such that at least a part of a thickness of an outer peripheral wall of the fixed body on an engagement area side where the crawler plate of the endless track device and the sprocket mesh with each other is thickened. The starting wheel structure of the endless track device.
前記固定体の外周壁の断面形状は、前記噛合領域側と前記噛合領域側とは反対側の領域とで、前記無限軌道装置の進行方向に対して前後対称形状に構成されていることを特徴とする無限軌道装置の起動輪構造。 It is a starting wheel structure of the endless track device according to claim 1,
The cross-sectional shape of the outer peripheral wall of the fixed body is configured to be symmetrical in the front-rear direction with respect to the traveling direction of the endless track device at the meshing region side and the region opposite to the meshing region side. The starting wheel structure of the endless track device.
前記固定体の外周壁の断面の前記噛合領域側は三日月形状であることを特徴とする無限軌道装置の起動輪構造。 It is a starting wheel structure of the endless track device according to claim 1 or 2,
The starting wheel structure of the endless track device, wherein a cross section of the outer peripheral wall of the fixed body on the side of the meshing region has a crescent shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018184207A JP7155824B2 (en) | 2018-09-28 | 2018-09-28 | Structural drive wheel structure for crawler tracks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018184207A JP7155824B2 (en) | 2018-09-28 | 2018-09-28 | Structural drive wheel structure for crawler tracks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2020050294A true JP2020050294A (en) | 2020-04-02 |
| JP7155824B2 JP7155824B2 (en) | 2022-10-19 |
Family
ID=69995547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018184207A Active JP7155824B2 (en) | 2018-09-28 | 2018-09-28 | Structural drive wheel structure for crawler tracks |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7155824B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016088172A (en) * | 2014-10-31 | 2016-05-23 | キャタピラー エス エー アール エル | Cover body for preventing foreign objects from entering into drive sprocket of work machine including crawler carrier and assembly method of cover body |
| JP2017052312A (en) * | 2015-09-07 | 2017-03-16 | 日立建機株式会社 | Crawler vehicle |
| JP2017116055A (en) * | 2015-12-25 | 2017-06-29 | Ｋｙｂ株式会社 | Transmission and driving device including the same |
-
2018
- 2018-09-28 JP JP2018184207A patent/JP7155824B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016088172A (en) * | 2014-10-31 | 2016-05-23 | キャタピラー エス エー アール エル | Cover body for preventing foreign objects from entering into drive sprocket of work machine including crawler carrier and assembly method of cover body |
| JP2017052312A (en) * | 2015-09-07 | 2017-03-16 | 日立建機株式会社 | Crawler vehicle |
| JP2017116055A (en) * | 2015-12-25 | 2017-06-29 | Ｋｙｂ株式会社 | Transmission and driving device including the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7155824B2 (en) | 2022-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8287056B2 (en) | Lobed bushing for track assembly and track-type machine using same | |
| RU2506189C2 (en) | Guide wheel and caterpillar running gear assy | |
| JP5775894B2 (en) | Crawler belt connecting device | |
| CN102639389B (en) | Bushing for tracked undercarriages | |
| JP6385904B2 (en) | Tracked vehicle | |
| JP2020050294A (en) | Starting wheel structure of endless track device | |
| JP7131055B2 (en) | Seal structure | |
| JP4059687B2 (en) | Traveling drive device for tracked vehicle | |
| JP2011074605A (en) | Crawler type traveling device | |
| CN110944901B (en) | Drive sprocket assembly for a track-type machine | |
| JP7047696B2 (en) | Lubricant circulation structure for swivel gears | |
| JP6732692B2 (en) | Excavator | |
| JP4744468B2 (en) | Hydraulic piping device to the traveling motor of the swing work machine | |
| WO2023188752A1 (en) | Running drive device | |
| JP2002249084A (en) | Track frame structure | |
| JP2002294743A (en) | Hydraulic piping apparatus for traveling motors of rotary working machine | |
| JPH10132059A (en) | Slewing gear of construction machine | |
| JP4496520B2 (en) | Swivel device for construction machinery | |
| CN213138961U (en) | Traveling device and engineering machine | |
| JP4418981B2 (en) | Ring saw driving device and cutting device with ring saw | |
| JP3640361B2 (en) | Gear lubrication device for swing circle of construction machinery | |
| JP4539987B2 (en) | Construction machinery | |
| JP2003327174A (en) | Travelling drive unit of track-laying-type vehicle | |
| JP2023031931A (en) | Foreign matter infiltration prevention structure of rotary seal portion of work machine comprising crawler type travel body, and work machine | |
| JP4364605B2 (en) | Truck frame manufacturing method for construction machinery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20210421 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20220422 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20220510 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20220708 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20220906 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20220919 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 7155824 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |