JPH0340658Y2 - - Google Patents
Info
- Publication number
- JPH0340658Y2 JPH0340658Y2 JP1984110770U JP11077084U JPH0340658Y2 JP H0340658 Y2 JPH0340658 Y2 JP H0340658Y2 JP 1984110770 U JP1984110770 U JP 1984110770U JP 11077084 U JP11077084 U JP 11077084U JP H0340658 Y2 JPH0340658 Y2 JP H0340658Y2
- Authority
- JP
- Japan
- Prior art keywords
- drive motor
- branched
- directional control
- control valve
- wheels
- 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.)
- Expired
Links
Landscapes
- Motor Power Transmission Devices (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Description
【考案の詳細な説明】
(1) 産業上の利用分野
本考案は自走式高所作業車等の４輪を油圧によ
り駆動する油圧走行回路に関するものである。[Detailed description of the invention] (1) Field of industrial application The present invention relates to a hydraulic traveling circuit that hydraulically drives the four wheels of a self-propelled aerial work vehicle or the like.
(2) 従来の技術
従来の４輪を駆動する油圧走行回路は、第２図
に示すように、ポンプ２６から吐出された圧油は
方向切換弁２７を介して分流器２８により分流さ
れ、分流された一方の管路２０は分岐２０ａ，２
０ｂして右前輪３の駆動モータ２３及び左前輪２
の駆動モータ２２に連結され、分流された他方の
管路２１は分岐２１ａ，２１ｂして右後輪５の駆
動モータ２５及び左後輪４の駆動モータ２４に連
結されていた。(2) Conventional technology As shown in FIG. 2, in a conventional hydraulic running circuit that drives four wheels, pressure oil discharged from a pump 26 is diverted by a flow divider 28 via a directional control valve 27. One of the pipe lines 20 is branched into branches 20a, 2
0b, the drive motor 23 of the right front wheel 3 and the left front wheel 2
The other branched pipe 21 was connected to the drive motor 25 of the right rear wheel 5 and the drive motor 24 of the left rear wheel 4 through branches 21a and 21b.
(3) 考案が解決しようとする問題点
しかし、従来の油圧走行回路では、車軸が固定
されている自走式高所作業車においては、不整地
等の走行時に、地表面の凹凸により対角方向の２
輪２と５または３と４の荷重が減少して空転する
と、他の２輪３と４または２と５の駆動モータに
圧が立たなくなり、走行不能になるという問題が
あつた。(3) Problems that the invention aims to solve However, with the conventional hydraulic traveling circuit, when a self-propelled aerial work vehicle with a fixed axle is traveling on rough ground, the unevenness of the ground surface causes diagonal direction 2
When the load on wheels 2 and 5 or 3 and 4 decreases and they spin idly, the drive motors for the other two wheels 3 and 4 or 2 and 5 lose pressure, making it impossible to run.
(4) 問題点を解決するための手段
本考案は、上記の問題点を解決するために、油
圧ポンプの吐出管路及びタンクへの戻り管路がそ
れぞれ方向切換弁に連結され、この方向切換弁に
連結された一つの管路は分流器に連結され、この
分流器により同流量及び同圧力に分流された管路
はそれぞれ分岐し、分岐した管路をそれぞれ車両
の対角方向に位置する車輪の駆動モータの一方の
ポートに連結し、前記方向切換弁に連結されたも
う一つの管路を前記各駆動モータに対応して分岐
し各駆動モータの他方のポートに連結したもので
ある。(4) Means for Solving the Problems In order to solve the above problems, the present invention provides that the discharge pipe of the hydraulic pump and the return pipe to the tank are each connected to a directional switching valve, and the directional switching valve One pipe connected to the valve is connected to a flow divider, and the pipes divided into the same flow rate and pressure by the flow divider are branched, and the branched pipes are located diagonally to the vehicle. Another conduit connected to one port of the wheel drive motor and connected to the directional switching valve is branched corresponding to each drive motor and connected to the other port of each drive motor.
(5) 作用
上記の構成により、不整地の走行時において、
地表面の凹凸により対角方向に位置する車輪の荷
重が少なくなつたり、地表面から離れて空転して
も、残りの対角方向に位置する車輪の駆動モータ
に供給される圧油の流量及び圧力が確保されて駆
動力を有するので、作業車は前進あるいは後進す
る。(5) Effect With the above configuration, when driving on rough terrain,
Even if the load on the diagonally located wheels decreases due to irregularities on the ground surface, or even if they move away from the ground surface and idle, the flow rate of pressure oil supplied to the drive motors of the remaining diagonally located wheels will decrease. Since pressure is secured and driving force is provided, the work vehicle moves forward or backward.
(6) 実施例
以下、図面により本考案の実施例について説明
する。(6) Examples Examples of the present invention will be described below with reference to the drawings.
第１図に示すように、油圧ポンプ６の吐出管路
及びタンク１７への戻り管路は方向切換弁７に連
結され、方向切換弁７に連結された管路９は分流
器８により同流量及び同圧力に分流１０，１１さ
れ、分流された一方の管路１０は分岐１０ａ，１
０ｂして右前輪３の駆動モータ１３と左前輪４の
駆動モータ１４の一方のポートに連結され、分流
された他方の管路１１は分岐１１ａ，１１ｂして
左前輪２の駆動モータ１２と右後輪５の駆動モー
タ１５の一方のポートに連結されている。方向切
換弁７に連結されたもう一つの管路１６は各駆動
モータ１２，１３，１４，１５に対応して分岐
し、各駆動モータの他方のポートに連結されてい
る。 As shown in FIG. 1, the discharge pipe of the hydraulic pump 6 and the return pipe to the tank 17 are connected to a directional switching valve 7, and a pipe 9 connected to the directional switching valve 7 is connected to a flow divider 8 to provide the same flow rate. and the same pressure is branched 10, 11, and one branched pipe 10 is branched 10a, 1
0b and connected to one port of the drive motor 13 of the right front wheel 3 and the drive motor 14 of the left front wheel 4, and the other branched pipe 11 is connected to the drive motor 12 of the left front wheel 2 and the right by branching 11a, 11b. It is connected to one port of the drive motor 15 for the rear wheel 5. Another conduit 16 connected to the directional switching valve 7 branches corresponding to each drive motor 12, 13, 14, 15, and is connected to the other port of each drive motor.
上記の構成により、方向切換弁７を位置に切
換えると、ポンプ６から吐出された圧油は方向切
換弁７から分流器８に送られて同流量及び同圧力
に分流され、分流された一方の管路１０が分岐１
０ａ，１０ｂして駆動モータ１３，１４に圧油が
供給され、分流された他方の管路１１が分岐１１
ａ，１１ｂして駆動モータ１２，１５に圧油が供
給されて、駆動モータ１２，１３，１４，１５が
回転して作業車１が前進し、方向切換弁７を位
置に切換えると、圧油は管路１６に供給され、方
向切換弁７を位置に切換えたときと逆方向に圧
油が流れて、駆動モータ１２，１３，１４，１５
が逆転して作業車１が後進する。 With the above configuration, when the directional control valve 7 is switched to the position, the pressure oil discharged from the pump 6 is sent from the directional control valve 7 to the flow divider 8 and is divided into the same flow rate and the same pressure, and one of the divided flows is Pipe line 10 branches 1
0a, 10b, pressure oil is supplied to the drive motors 13, 14, and the other branched pipe line 11 is connected to the branch 11.
a, 11b, pressure oil is supplied to the drive motors 12, 15, the drive motors 12, 13, 14, 15 rotate and the work vehicle 1 moves forward, and when the directional control valve 7 is switched to the position, the pressure oil is supplied to the drive motors 12, 15. is supplied to the pipe line 16, and the pressure oil flows in the opposite direction to when the directional control valve 7 is switched to the position, and the drive motors 12, 13, 14, 15
is reversed and the work vehicle 1 moves backward.
そして、不整地の走行時において、地表面の凹
凸により対角方向に位置する車輪２と５または３
と４の荷重が少なくなつたり、地表面から離れ
て、空転しても、残りの対角方向に位置する車輪
３と４または２と５は駆動モータ１３と１４また
は１２と１５に供給される圧油の流量及び圧力が
確保され、駆動力を有するため、作業車は前進あ
るいは後進する。 When driving on rough terrain, wheels 2 and 5 or 3 are positioned diagonally due to unevenness of the ground surface.
Even if the load on wheels 3 and 4 decreases or they separate from the ground surface and spin idly, the remaining wheels 3 and 4 or 2 and 5 located in the diagonal direction are supplied to drive motors 13 and 14 or 12 and 15. Since the flow rate and pressure of the pressurized oil are ensured and the driving force is provided, the work vehicle moves forward or backward.
したがつて、作業車は立ち往生して動けなくな
ることなく不整地を走破することができる。 Therefore, the work vehicle can travel over rough terrain without getting stuck and unable to move.
また、第３図は他の実施例を示し、２個のポン
プ６，６′により車輪を駆動するものであり、各
ポンプの吐出管路は連動する２個の方向切換弁
７，７′にそれぞれ連結され、一方の切換弁７に
連結された管路１０，１６はそれぞれ分岐して右
前輪３の駆動モータ１３と左後輪４の駆動モータ
１４に連結され、他方の切換弁７′に連結された
管路１１，１６′はそれぞれ分岐して左前輪２の
駆動モータ１２と右後輪５の駆動モータ１５に連
結されており、一方のポンプ６により駆動モータ
１３，１４が駆動され、他方のポンプ６′により
駆動モータ１２，１５が駆動されるものである。 Fig. 3 shows another embodiment in which the wheels are driven by two pumps 6, 6', and the discharge pipes of each pump are connected to two interlocking directional control valves 7, 7'. The pipes 10 and 16 which are connected to one of the switching valves 7 are branched and connected to the drive motor 13 of the right front wheel 3 and the drive motor 14 of the left rear wheel 4, and are connected to the other switching valve 7'. The connected pipes 11 and 16' are branched and connected to a drive motor 12 for the left front wheel 2 and a drive motor 15 for the right rear wheel 5, and one of the pumps 6 drives the drive motors 13 and 14. Drive motors 12 and 15 are driven by the other pump 6'.
(7) 考案の効果
以上の様に、本考案によれば、従来のものと構
成部品を変えることなく、対角方向に位置する２
輪が空転しても残りの２輪が駆動力を失わない油
圧走行回路が提供され、本考案は油圧により４輪
を駆動する作業車の走行性能向上に多大な効果を
有する。(7) Effects of the invention As described above, according to the invention, the two diagonally located
A hydraulic driving circuit is provided in which the remaining two wheels do not lose driving force even if one wheel spins idle, and the present invention has a great effect on improving the driving performance of a work vehicle that drives four wheels using hydraulic pressure.
図面は本考案の実施例を示し、第１図は本考案
の実施例を示す油圧回路図、第２図は従来例を示
す油圧回路図、第３図は本考案の他の実施例を示
す油圧回路図である。
２，３，４，５……車輪、６……ポンプ、７…
…方向切換弁、８……分流器、１２，１３，１
４，１５……駆動モータ、１７……タンク。
The drawings show an embodiment of the present invention, Fig. 1 is a hydraulic circuit diagram showing an embodiment of the invention, Fig. 2 is a hydraulic circuit diagram showing a conventional example, and Fig. 3 shows another embodiment of the invention. It is a hydraulic circuit diagram. 2, 3, 4, 5...wheels, 6...pump, 7...
... Directional switching valve, 8 ... Flow divider, 12, 13, 1
4, 15...drive motor, 17...tank.
Claims (1)
がそれぞれ方向切換弁に連結され、この方向切換
弁に連結された一つの管路は分流器に連結され、
この分流器により同流量及び同圧力に分流された
管路はそれぞれ分岐し、分岐した管路をそれぞれ
車両の対角方向に位置する車輪の駆動モータの一
方のポートに連結し、前記方向切換弁に連結され
たもう一つの管路を前記各駆動モータに対応して
分岐し各駆動モータの他方のポートに連結したこ
とを特徴とする油圧走行回路。 A discharge line of the hydraulic pump and a return line to the tank are each connected to a directional control valve, one line connected to the directional control valve is connected to a flow divider,
The pipes divided into the same flow rate and the same pressure by this flow divider are branched, and each branched pipe is connected to one port of a drive motor of a wheel located diagonally on the vehicle, and the directional control valve A hydraulic travel circuit characterized in that another conduit connected to the drive motor is branched corresponding to each of the drive motors and connected to the other port of each drive motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11077084U JPS6125226U (en) | 1984-07-20 | 1984-07-20 | Hydraulic travel circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11077084U JPS6125226U (en) | 1984-07-20 | 1984-07-20 | Hydraulic travel circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6125226U JPS6125226U (en) | 1986-02-14 |
| JPH0340658Y2 true JPH0340658Y2 (en) | 1991-08-27 |
Family
ID=30669884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11077084U Granted JPS6125226U (en) | 1984-07-20 | 1984-07-20 | Hydraulic travel circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6125226U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0771898B2 (en) * | 1987-05-27 | 1995-08-02 | 佐藤 寛 | Vehicle power transmission mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS583319U (en) * | 1981-06-30 | 1983-01-10 | 株式会社島津製作所 | Hydraulic drive system for vehicles |
-
1984
- 1984-07-20 JP JP11077084U patent/JPS6125226U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6125226U (en) | 1986-02-14 |
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