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JP4594893B2 - Brake equipment for work vehicle - Google Patents
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JP4594893B2 - Brake equipment for work vehicle - Google Patents

Brake equipment for work vehicle Download PDF

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JP4594893B2
JP4594893B2 JP2006095414A JP2006095414A JP4594893B2 JP 4594893 B2 JP4594893 B2 JP 4594893B2 JP 2006095414 A JP2006095414 A JP 2006095414A JP 2006095414 A JP2006095414 A JP 2006095414A JP 4594893 B2 JP4594893 B2 JP 4594893B2
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brake
shaft
drive shaft
wire
work vehicle
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JP2007269105A (en
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法身 中村
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Kubota Corp
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Kubota Corp
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Description

本発明は、ブレーキとブレーキを操作する人為操作具を備えた作業車のブレーキ装置に関する。   The present invention relates to a brake device for a work vehicle including a brake and a manipulator for operating the brake.

従来の車両のブレーキ装置としては、例えば特許文献1に開示されるように、手動式又は足踏み式の人為操作具とブレーキをブレーキワイヤにより連係したものが知られている。   As a conventional vehicle brake device, as disclosed in, for example, Patent Document 1, a manual or stepping-type artificial operation tool and a brake linked with a brake wire are known.

特開2004−050952号公報(図16)Japanese Patent Laying-Open No. 2004-050952 (FIG. 16)

従来のブレーキ装置は、手動式又は足踏み式の人為操作具とブレーキとをブレーキワイヤ等の連係機構で連係することによって、人為操作具の動作をブレーキに伝える構造を採用していた。
しかし、例えば、人為操作具とブレーキを連係機構の一例であるブレーキワイヤで連係しようとした場合、ブレーキが車体の左及び右横側に配置されているのに対して人為操作具が車体左右中央に位置している場合が多いため、ブレーキワイヤを湾曲して配線しなければならない。そのため、ブレーキワイヤの配線が複雑であるという問題がある。また、ブレーキワイヤの湾曲によりブレーキワイヤを引っ張る際のインナケーブルとアウタケーブルの間のロスが多くなり、人為操作具の作動ストロークがブレーキに正確に伝わりにくいという問題がある。
The conventional brake device employs a structure in which the operation of the manual operation tool is transmitted to the brake by linking the manual or stepping type manual operation tool and the brake by a linkage mechanism such as a brake wire.
However, for example, when an attempt is made to link an artificial operating tool and a brake with a brake wire which is an example of a linkage mechanism, the artificial operating tool is located at the left and right side of the vehicle body while the brake is disposed on the left and right side of the vehicle In many cases, the brake wire must be bent and wired. Therefore, there is a problem that the wiring of the brake wire is complicated. In addition, there is a problem that the loss between the inner cable and the outer cable when pulling the brake wire increases due to the bending of the brake wire, and the operation stroke of the artificial operating tool is difficult to be accurately transmitted to the brake.

本発明は、ブレーキワイヤ配線などの組立作業やメンテナンス作業の作業性を向上するとともに、ブレーキ性能の高い作業車のブレーキ装置を提供することを目的とするものである。   It is an object of the present invention to provide a brake device for a work vehicle having high brake performance while improving workability of assembly work and maintenance work such as brake wire wiring.

[I]
(構成)
本発明の第1特徴は、左右の前輪又は後輪にブレーキを備え、前記ブレーキを操作する人為操作具を備えた作業車のブレーキ装置において、次のように構成することにある。
車体左右方向に筒軸を備え、前記筒軸の内部に前記人為操作具の操作により回動する駆動軸を備えるとともに、前記筒軸の左及び右側部に操作アームを備える。前記筒軸前記駆動軸とを筒軸上における左右の前記操作アームの配置箇所の中央部で連結し、前記駆動軸の左又は右の端部と前記人為操作具とを人為操作具用連係機構により連係するとともに、前記操作アームと前記ブレーキとをブレーキ用連係機構により連係する。
[I]
(Constitution)
A first feature of the present invention resides in the following configuration in a brake device for a work vehicle that includes brakes on left and right front wheels or rear wheels, and includes a human operation tool for operating the brakes.
A cylinder shaft is provided in the left-right direction of the vehicle body, a drive shaft that is rotated by an operation of the artificial operation tool is provided inside the cylinder shaft, and operation arms are provided on the left and right sides of the cylinder shaft. And connecting the drive shaft and the cylindrical shaft at the center of the arrangement position of the left and right the operating arm of on the cylindrical shaft, linking a manual control device to the left or right end portion of the drive shaft and the manual control device The operation arm and the brake are linked by a brake linkage mechanism.

(作用)
上記構成を採用することにより、人為操作具を操作すれば、人為操作具用連係機構を介して駆動軸が回動し、筒軸と駆動軸とが筒軸上における左右の操作アームの配置箇所の中央部で連結されているため、駆動軸の回動が筒軸上における左右の操作アームの配置箇所の中央部から筒軸の左及び右側部に備えた操作アームに伝達されて、筒軸の左及び右側部の操作アームからブレーキ用連係機構を介して左右の前輪又は後輪のブレーキに伝達される。
(Function)
By adopting the above configuration, if the human operation tool is operated, the drive shaft is rotated via the human operation tool linkage mechanism, and the cylinder shaft and the drive shaft are disposed at the left and right operation arms on the cylinder shaft. for being connected by a central portion, is transmitted to the operation arm rotation of the drive shaft is provided on the left and right portions of the cylindrical shaft from the center of the arrangement position of the left and right operating arms on the cylinder axis, the cylinder axis Is transmitted from the left and right operation arms to the left and right front wheel or rear wheel brakes via the brake linkage mechanism.

本発明の第1特徴によると、筒軸を車体左右方向に備えるとともに、筒軸の左及び右側部に操作アームを備えることにより、操作アームと左右の前輪又は後輪のブレーキとを車体左右方向において互いに近い位置に配置することが可能となる。また、駆動軸の左又は右の端部と人為操作具とを人為操作具用連係機構により連係することにより、例えば、運転席の左又は右の側部に人為操作具が位置する場合には、駆動軸の左又は右の端部と人為操作具を車体左右方向において近い位置に配置することが可能となる。そのため、操作アームとブレーキとの間に備えるブレーキ用連係機構及び人為操作具と駆動軸との間に備える人為操作具用連係機構として、例えば、ブレーキワイヤを採用した場合にはブレーキワイヤの湾曲を少なくすることができる。 According to the first aspect of the present invention, the cylinder shaft is provided in the left-right direction of the vehicle body, and the operation arms and the brakes of the left and right front wheels or the rear wheel are provided in the left-right direction of the vehicle body by providing operation arms on the left and right sides of the cylinder shaft. It is possible to arrange them at positions close to each other. In addition, when the left or right end of the drive shaft and the human operation tool are linked by the human operation tool linkage mechanism, for example, when the human operation tool is located on the left or right side of the driver's seat, The left or right end portion of the drive shaft and the artificial operation tool can be arranged at positions close to each other in the left-right direction of the vehicle body. Therefore, as a manual control device for linking mechanism provided between the drive shaft linkage mechanism and manual control device for a brake comprising between the operating arm and the brake, for example, the curvature of the brake wire in the case of adopting the brake wire Can be reduced.

また、筒軸の内部に人為操作具の操作により回動する駆動軸を備えることにより、筒軸と駆動軸を同心状にコンパクトに配置することができる。   In addition, by providing a drive shaft that is rotated by an operation of an artificial operation tool inside the tube shaft, the tube shaft and the drive shaft can be arranged concentrically and compactly.

(発明の効果)
本発明の第1特徴によると、ブレーキワイヤをブレーキ用連係機構及び人為操作具用連係機構として採用した場合には、ブレーキワイヤの湾曲を少なくすることができるため、ブレーキワイヤの配線が容易になるとともに、ブレーキワイヤを引っ張る際のインナケーブルとアウタケーブルの間のロスが少なくなり人為操作具の作動ストロークがブレーキに正確に伝わりやすくなる。すなわち、ブレーキ装置の組立作業、メンテナンス作業及び設計作業の作業性が向上するとともに、ブレーキ性能の高い作業車のブレーキ装置を実現できる。
(The invention's effect)
According to the first feature of the present invention, when the brake wire is employed as the brake linkage mechanism and the manipulating device linkage mechanism , the brake wire can be less bent, so that the wiring of the brake wire is facilitated. At the same time, the loss between the inner cable and the outer cable when the brake wire is pulled is reduced, and the operation stroke of the artificial operating tool is easily transmitted to the brake. That is, the workability of the assembly work, maintenance work and design work of the brake device is improved, and a brake device for a work vehicle having high brake performance can be realized.

また、筒軸と駆動軸を同心状にコンパクトに配置することができるため、低コストでシンプルなブレーキ装置を実現できる。   Further, since the cylinder shaft and the drive shaft can be arranged concentrically and compactly, a simple brake device can be realized at low cost.

図1に示すように、作業車の一例である四輪駆動車は、左右一対の操向自在なタイヤ前輪1、左右一対のタイヤ後輪2を備え、かつ、前後輪間に前後輪1,2を駆動するエンジン3を搭載した車体フレーム4の前部に、座席5を備えた運転部6を備えるとともに、前記車体フレーム4の後部に油圧シリンダ11によってダンプする荷台8を備える。   As shown in FIG. 1, a four-wheel drive vehicle, which is an example of a work vehicle, includes a pair of left and right steerable tire front wheels 1 and a pair of left and right tire rear wheels 2, and includes front and rear wheels 1, A driving unit 6 having a seat 5 is provided at a front portion of a vehicle body frame 4 on which an engine 3 for driving 2 is mounted, and a loading platform 8 for dumping by a hydraulic cylinder 11 is provided at a rear portion of the vehicle body frame 4.

車体フレーム4の前部にステアリングハンドル9をはじめとする各種の操作レバー類やフロントパネル等を備え、座席支持フレーム10の上部に座席5が持ち上げ回動可能に取り付けられている。この作業車は左ハンドル仕様で、運転者用の座席5の左側部で座席支持フレーム10の上部に、後輪ブレーキ13の操作を行う人為操作具の一例であるパーキングレバー14を備える。   Various operation levers such as a steering handle 9 and a front panel are provided at a front portion of the vehicle body frame 4, and a seat 5 is attached to an upper portion of the seat support frame 10 so as to be rotatable. This work vehicle has a left-hand drive specification, and includes a parking lever 14 that is an example of a human operation tool for operating the rear wheel brake 13 on the left side of the driver's seat 5 and above the seat support frame 10.

図2に示すように、エンジン3の動力がミッションケース19内の伝動経路を介して無段変速装置18に連動連結されて、無段変速装置18から取り出された変速動力がミッションケース19内の伝動経路を介して左右の後輪2に伝達されるとともに、変速動力の一部が出力軸17から伝動軸20及び伝動軸21を介して前部デフ装置22に伝達され、前部デフ装置22から延出された左右の伝動軸23を介して左右の前輪1が駆動されるようになっている。なお、ミッションケース19内には、無段変速装置18からの動力を変速するギヤ式の副変速機構(図示せず)を備え、副変速機構で変速された動力は、後輪駆動用出力軸30及び伝動軸26を介して左右の後輪2に伝達されるようになっている。   As shown in FIG. 2, the power of the engine 3 is interlocked and connected to the continuously variable transmission 18 via a transmission path in the mission case 19, and the shift power extracted from the continuously variable transmission 18 is transmitted in the mission case 19. While being transmitted to the left and right rear wheels 2 via the transmission path, a part of the transmission power is transmitted from the output shaft 17 to the front differential device 22 via the transmission shaft 20 and the transmission shaft 21, and the front differential device 22 is transmitted. The left and right front wheels 1 are driven through left and right transmission shafts 23 extending from the right and left. The transmission case 19 is provided with a gear-type sub-transmission mechanism (not shown) for shifting the power from the continuously variable transmission 18, and the power shifted by the sub-transmission mechanism is output to the rear wheel drive output shaft. 30 and the transmission shaft 26 are transmitted to the left and right rear wheels 2.

図2及び図3に示すように、左右の前車軸ケース(図示せず)の内部には湿式多板型(図示せず)の前輪ブレーキ12がそれぞれ組み込まれている。ミッションケース19の左右側部に湿式多板型(図示せず)の後輪ブレーキ13を備え、この後輪ブレーキ13は、回転軸29に設けた操作レバー32を回動操作することで、後輪駆動用出力軸30への制動力が付与あるいは解除されるようになっている。   As shown in FIGS. 2 and 3, wet multi-plate type (not shown) front wheel brakes 12 are respectively incorporated in the left and right front axle cases (not shown). A wet-type multi-plate type (not shown) rear wheel brake 13 is provided on the left and right sides of the transmission case 19, and the rear wheel brake 13 is operated by rotating an operation lever 32 provided on a rotary shaft 29. The braking force to the wheel drive output shaft 30 is applied or released.

図3にブレーキ操作系が示されている。左右の後輪ブレーキ13を操作する回転軸29の外端には操作レバー32が設けられており、操作レバー32を押し引き回動する一対の油圧シリンダ33が、ブレーキペダル34によって操作されるマスターシリンダ35に配管36を介して接続されている。また、このマスターシリンダ35と前輪ブレーキ12とが配管37で接続されており、ブレーキペダル34を踏み込むことで左右の前輪1と左右の後輪2を同時に制動することができる。   FIG. 3 shows a brake operation system. An operating lever 32 is provided at the outer end of the rotating shaft 29 that operates the left and right rear wheel brakes 13. A pair of hydraulic cylinders 33 that push and pull the operating lever 32 are operated by a brake pedal 34. The cylinder 35 is connected via a pipe 36. The master cylinder 35 and the front wheel brake 12 are connected by a pipe 37, and the left and right front wheels 1 and the left and right rear wheels 2 can be braked simultaneously by depressing the brake pedal 34.

操作レバー32は、ブレーキ用連係機構の一例である左右のブレーキワイヤ44、筒軸41の両側部に固着された操作アーム43、駆動軸40とピン42で連動連結された筒軸41、左側部にアーム39を固着した駆動軸40及び人為操作具用連係機構の一例であるワイヤ38を介してパーキングブレーキ14に機械的に連動連結されており(図4参照)、駐車時にはパーキングレバー14を操作して左右の後輪2を制動しておくことができるようになっている。 The operation lever 32 includes left and right brake wires 44, which are an example of a brake linkage mechanism, an operation arm 43 fixed to both sides of the cylinder shaft 41, a cylinder shaft 41 interlocked with a drive shaft 40 and a pin 42, and a left side portion. It is mechanically linked to the parking brake 14 via a drive shaft 40 to which an arm 39 is fixed and a wire 38 as an example of a linkage mechanism for an artificial operating tool (see FIG. 4), and the parking lever 14 is operated during parking. Thus, the left and right rear wheels 2 can be braked.

図2に示すように、後輪ブレーキ13と操作アーム43は車体左右方向において互いに近い位置に配置されている。そのため、ブレーキ用連係機構の一例である左右のブレーキワイヤ44は車体前後方向に極端に湾曲させることなく配置されている。また、人為操作具用連係機構の一例であるワイヤ38についても同様に、車体前後方向に湾曲させることなく配置されている(図3参照)。 As shown in FIG. 2, the rear wheel brake 13 and the operation arm 43 are disposed at positions close to each other in the left-right direction of the vehicle body. Therefore, the left and right brake wires 44, which are an example of a brake linkage mechanism, are arranged without being extremely curved in the longitudinal direction of the vehicle body. Similarly, the wire 38, which is an example of the artificial operating device linkage mechanism, is also arranged without being bent in the longitudinal direction of the vehicle body (see FIG. 3).

図3に示すように、パーキングレバー14は、レバー部46とレバー部46を回動可能に支持する支持ブラケット47などから構成されている。支持ブラケット47は座席支持フレーム10の上部にボルト49で固定されている。レバー部46は横軸芯P1回りに回動可能に支持ブラケット47に固定されており、支持ブラケット47に形成された歯部50に係合するラチェット51、横軸芯P1回りの同心状に設けられたワイヤガイド52を備える。レバー部46先端には操作ボタン53を備え、操作ボタン53を押せば左側面視で横軸芯P2回りの時計回りにラチェット51が回転し、歯部50とラチェット51の係合を解除し、レバー部46を水平に戻すことにより後輪ブレーキ13が解除されるようになっている。   As shown in FIG. 3, the parking lever 14 includes a lever portion 46 and a support bracket 47 that rotatably supports the lever portion 46. The support bracket 47 is fixed to the upper part of the seat support frame 10 with bolts 49. The lever portion 46 is fixed to the support bracket 47 so as to be rotatable about the horizontal axis P1, and is provided concentrically around the ratchet 51 that engages the tooth portion 50 formed on the support bracket 47 and the horizontal axis P1. The wire guide 52 is provided. An operation button 53 is provided at the tip of the lever portion 46. When the operation button 53 is pressed, the ratchet 51 rotates clockwise around the horizontal axis P2 in the left side view, and the engagement between the tooth portion 50 and the ratchet 51 is released. The rear wheel brake 13 is released by returning the lever portion 46 to a horizontal position.

ワイヤ38の一端は、ワイヤガイド52に沿ってレバー部46の後部に固定されており、他端は横軸芯P3周りに回動自在に取り付けられた駆動軸40に固着したアーム39に回動自在にピン55により固定されている。その結果、パーキングレバー14を引き操作すればワイヤガイド52に沿ってワイヤ38を引っ張り、アーム39を左側面視で横軸心P3回りの反時計回りに回転させる。一方、パーキングレバー14を解除操作すればアーム39を左側面視で横軸心P3回りの時計回りに回転させる。   One end of the wire 38 is fixed to the rear portion of the lever portion 46 along the wire guide 52, and the other end rotates to an arm 39 fixed to a drive shaft 40 that is rotatably mounted around the horizontal axis P3. The pin 55 is freely fixed. As a result, when the parking lever 14 is pulled, the wire 38 is pulled along the wire guide 52, and the arm 39 is rotated counterclockwise around the horizontal axis P3 in the left side view. On the other hand, if the parking lever 14 is released, the arm 39 is rotated clockwise around the horizontal axis P3 in the left side view.

図3〜図5に示すように、筒軸41の両側部には操作アーム43が固着されており、筒軸41上における左右の操作アーム43,43の配置箇所の中央部でピン42によって駆動軸40に固定されている。座席支持フレーム10にブレーキワイヤ44を固定するためのブラケット57を備え、ブレーキワイヤ44のアウタケーブル58が固定されている。ブレーキワイヤ44のインナケーブル59の先端は操作アーム43に固定されており、駆動軸40の左側部に設けたアーム39がパーキングレバー14の引き操作により、左側面視で横軸芯P3回りの反時計回りに回転すればピン42を介して、筒軸41及び筒軸41に設けた操作アーム43も反時計回りに回転し、ブレーキワイヤ44のインナケーブル59を引っ張るようになっている。なお操作アーム43の回転はブレーキワイヤ44を介して後輪ブレーキ13の操作レバー32に伝わり、回転軸29の軸芯回りに操作レバー32を回動させることで後輪駆動用出力軸30への制動力を付与する。 As shown in FIGS. 3 to 5, operation arms 43 are fixed to both sides of the cylinder shaft 41 , and are driven by pins 42 at the center of the arrangement positions of the left and right operation arms 43, 43 on the cylinder shaft 41. It is fixed to the shaft 40. A bracket 57 for fixing the brake wire 44 to the seat support frame 10 is provided, and an outer cable 58 of the brake wire 44 is fixed. The distal end of the inner cable 59 of the brake wire 44 is fixed to the operation arm 43, and the arm 39 provided on the left side of the drive shaft 40 is turned around the horizontal axis P3 when viewed from the left side by pulling the parking lever 14. When rotating clockwise, the cylinder shaft 41 and the operation arm 43 provided on the cylinder shaft 41 are also rotated counterclockwise via the pin 42, and the inner cable 59 of the brake wire 44 is pulled. The rotation of the operating arm 43 is transmitted to the operating lever 32 of the rear wheel brake 13 via a brake wire 44, the rear wheel driving output shaft 30 around its axis by rotating the operation lever 32 of the rotary shaft 29 The braking force is applied.

図4及び図5に示すように、駆動軸40は、左側部にアーム39が固着されており、左右の座席支持フレーム10に固着された軸受部60に横軸芯P3回りに回動自在に支持されている。左右の座席支持フレーム10の間に上述した筒軸41を駆動軸40と同心状に内外二重に備え、左右の操作アーム43,43の中央部でピン42によって固定されている。 As shown in FIGS. 4 and 5, the drive shaft 40 has an arm 39 fixed to the left side, and is rotatable about a horizontal axis P <b> 3 on a bearing 60 fixed to the left and right seat support frames 10. It is supported. The above-described cylinder shaft 41 is provided between the left and right seat support frames 10 so as to be concentric with the drive shaft 40 inside and outside, and is fixed by pins 42 at the center of the left and right operation arms 43 , 43 .

筒軸41の中央部でピン42によって駆動軸40からの回動を伝達することにより、ピン42から筒軸41の左及び右側部に設けた左右の操作アーム43,43のそれぞれに均等なねじりモーメントを作用させることができる。そのため、左右のブレーキワイヤ44を均等な引張力で引っ張ることができ、左右の後輪ブレーキ13を均等に操作することができる。 By transmitting the rotation from the drive shaft 40 by a pin 42 at the central portion of the cylindrical shaft 41, equivalent to the respective left and right operation arms 43, 43 provided from the pin 42 to the left and right portions of the cylindrical shaft 41 Torsion Moments can be applied. Therefore, the left and right brake wires 44 can be pulled with an equal tensile force, and the left and right rear wheel brakes 13 can be operated equally.

[発明の実施の別形態]
前述の[発明を実施するための最良の形態]に示したブレーキ装置は、作業車の一例として四輪駆動車の後輪ブレーキ13にブレーキワイヤ44を用いた場合を示したが、ブレーキワイヤ44をブレーキ装置に採用する作業車であれば、四輪駆動車に限らず他の作業車でも適用できる。また、後輪ブレーキ13に限らず前輪ブレーキ12にブレーキワイヤ44を用いた場合でもよく、ブレーキワイヤ44以外の他の連係機構、例えば、連係ロッド(図示せず)やリンク機構(図示せず)をブレーキ装置に採用した作業車においても同様に適用できる。
[ Another Embodiment of the Invention]
In the brake device shown in [Best Mode for Carrying Out the Invention] described above, the brake wire 44 is used as the rear wheel brake 13 of the four-wheel drive vehicle as an example of a work vehicle. As long as the work vehicle employs a brake device, it can be applied to other work vehicles as well as four-wheel drive vehicles. Further, not only the rear wheel brake 13 but also a brake wire 44 may be used for the front wheel brake 12, and other linkage mechanisms other than the brake wire 44, such as a linkage rod (not shown) and a link mechanism (not shown). The present invention can be similarly applied to a work vehicle that employs a brake device.

四輪駆動車の全体側面図Overall side view of a four-wheel drive vehicle 伝動構造及びブレーキ操作系を示す平面図Plan view showing transmission structure and brake operation system ブレーキ操作系の構成図Brake operation system configuration diagram 駆動軸付近の横断平面図Transverse plan view near the drive shaft 駆動軸付近の構造を示す斜視図 Oblique view showing the structure near the drive shaft

1 前輪
2 後輪
13 後輪ブレーキ(ブレーキ)
14 パーキングレバー(人為操作具)
38 ワイヤ(人為操作具用連係機構)
40 駆動軸
41 筒軸
43 操作アーム
44 ブレーキワイヤ(ブレーキ用連係機構)
1 wheel 2 rear wheel 13 rear wheel brake (brake)
14 Parking lever (artificial operation tool)
38 wire (linkage mechanism for human operation tools)
40 Drive shaft 41 Tube shaft 43 Operation arm 44 Brake wire (brake linkage mechanism)

Claims (1)

左右の前輪又は後輪にブレーキを備え、前記ブレーキを操作する人為操作具を備えた作業車のブレーキ装置であって、
車体左右方向に筒軸を備え、前記筒軸の内部に前記人為操作具の操作により回動する駆動軸を備えるとともに、前記筒軸の左及び右側部に操作アームを備え、
前記筒軸前記駆動軸とを筒軸上における左右の前記操作アームの配置箇所の中央部で連結し、前記駆動軸の左又は右の端部と前記人為操作具とを人為操作具用連係機構により連係するとともに、
前記操作アームと前記ブレーキとをブレーキ用連係機構により連係したことを特徴とする作業車のブレーキ装置。
A brake device for a work vehicle that includes a brake on left and right front wheels or rear wheels and includes a human operation tool for operating the brake,
A cylinder shaft is provided in the left-right direction of the vehicle body, a drive shaft that is rotated by an operation of the artificial operation tool is provided inside the cylinder shaft, and operation arms are provided on the left and right sides of the cylinder shaft,
And connecting the drive shaft and the cylindrical shaft at the center of the arrangement position of the left and right the operating arm of on the cylindrical shaft, linking a manual control device to the left or right end portion of the drive shaft and the manual control device While linked by the mechanism,
A brake device for a work vehicle, wherein the operation arm and the brake are linked by a brake linkage mechanism.
JP2006095414A 2006-03-30 2006-03-30 Brake equipment for work vehicle Expired - Fee Related JP4594893B2 (en)

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* Cited by examiner, † Cited by third party
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JPS628868U (en) * 1985-07-03 1987-01-20
JPH0428865Y2 (en) * 1986-08-06 1992-07-14
JP3007902B2 (en) * 1996-12-24 2000-02-14 山崎 茂樹 Pushed carrier
JP2006056422A (en) * 2004-08-20 2006-03-02 Yanmar Co Ltd Working vehicle

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