JP2019088224A - Lumber feeding device in forestry harvester - Google Patents

Lumber feeding device in forestry harvester Download PDF

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JP2019088224A
JP2019088224A JP2017219213A JP2017219213A JP2019088224A JP 2019088224 A JP2019088224 A JP 2019088224A JP 2017219213 A JP2017219213 A JP 2017219213A JP 2017219213 A JP2017219213 A JP 2017219213A JP 2019088224 A JP2019088224 A JP 2019088224A
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hydraulic
pressure oil
switching valve
hydraulic motor
rollers
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JP7005302B2 (en
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松本　良三
Ryozo Matsumoto
良三 松本
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Abstract

To provide a lumber feeding device that can supply a required flow rate of pressure oil to a hydraulic motor so as to allow high-speed rotation of a feed roller.SOLUTION: The present invention provides a lumber feeding device. In order to allow high-speed feeding of lumber, the lumber feeding device has an additional accumulator to increase a flow rate of pressure oil to be fed to a hydraulic motor of right and left feed rollers from a hydraulic pump by opening of a discharge valve.SELECTED DRAWING: Figure 1

Description

本発明は、横倒しにした木材を枝払いしながら所定寸法に切断して材木にするのに用いられる林業用ハーベスターに関し、特に、林業用ハーベスターにおける木材送り装置に関する。   TECHNICAL FIELD The present invention relates to a forestry harvester used for cutting lumber that has been turned over into a predetermined size while branching off, and in particular to a lumber feeding device in a forestry harvester.

国際公開第２０１０／１４３０７６号（公知文献１）、日本国特許第５９１４９５８号明細書（公知文献２）などに開示されている。これらの公知文献に記載のハーベスターは、基本的には、ブームから懸垂支持されたハーベスター本体に装着された固定上カッターと、左右に開閉するように操作され、それぞれサイドカッターを有するカッターアームと、同様に開閉するように操作され、左右の可逆式油圧モータにより回転駆動される左右の送りローラと、左右に開閉するように操作されるクランプアームと、切断操作にあたってスイングするようになった動力チエーンソーと、を含む。ハーベスター本体には、開閉操作される左右の送りローラと共同して木材のより円滑な送りを可能にするために、ハーベスター本体の長手方向中心上に中ローラが設けられる。中ローラは、左右の油圧モータで回転駆動されるようになっている。別の例では中ローラは必要とされない。   International Publication WO 2010/143076 (known reference 1), Japanese Patent No. 5914958 (known reference 2) and the like are disclosed. Basically, the harvester described in these known documents is a fixed upper cutter attached to a harvester body suspended from a boom and a cutter arm which is operated to open and close left and right and has side cutters, respectively. Similarly, a power chain saw that is operated to open and close, and is driven to rotate by the left and right reversible hydraulic motors, a clamp arm operated to open and close to the left and right, and a power chain saw that swings for cutting operation And. The harvester body is provided with a middle roller on the longitudinal center of the harvester body in order to enable smoother feeding of wood in cooperation with the left and right feed rollers that are opened and closed. The middle roller is rotationally driven by the left and right hydraulic motors. In another example, the middle roller is not required.

パワーシャベルは、多くの油圧器機を作動する圧油を発生させる単一の油圧ポンプを含む。この油圧ポンプは、パワーシャベルのブームに装着される林業用ハーベスターにおける左右の送りローラの油圧モータに圧油を供給するのにも使用される。パワーシャベルに装備される油圧ポにンプは、一般的には、パワーシャベルの機種に応じて選定された容量のものである。   The power shovel includes a single hydraulic pump that generates pressure oil that operates many hydraulic machines. This hydraulic pump is also used to supply pressure oil to the hydraulic motors of the left and right feed rollers in a forestry harvester mounted on the boom of a power shovel. The hydraulic pump installed in the power shovel generally has a capacity selected according to the type of power shovel.

林業用ハーベスターでは、作業能率の観点から木材を高速で送ることが要請されるが、其れには、送りローラの回転数を高める必要がある。しかし、パワーシャベルの油圧ポンプは、送りローラを高速で回転させるのに十分な流量の圧油を油圧モータに供給することができず、したがって油圧モータを希望通り高速回転させることは不可能である。   In the case of a forestry harvester, it is required to feed wood at a high speed from the viewpoint of working efficiency. However, it is necessary to increase the number of rotations of the feed roller in order to avoid it. However, the power shovel hydraulic pump can not supply hydraulic oil with a flow rate sufficient to rotate the feed roller at high speed, so it is impossible to rotate the hydraulic motor at high speed as desired. .

本発明の目的は、送りローラの高速回転を可能にすべく所要流量の圧油を油圧モータに供給できるようにした木材送り装置を提供することにある。   An object of the present invention is to provide a wood feeding device capable of supplying hydraulic oil with a required flow rate to a hydraulic motor so as to enable high speed rotation of a feeding roller.

本発明のかかる目的は、木材の高速送りを可能にするため、油圧ポンプから左右の送りローラの油圧モータに供給されるべき圧油の流量を、放出弁の開放により増量させるためのアキュムレータを増設してなる、木材送り装置を提供することによって達成される。   The object of the present invention is to add an accumulator for increasing the flow rate of pressure oil to be supplied from the hydraulic pump to the hydraulic motors of the left and right feed rollers by opening the release valve in order to enable high-speed feeding of wood. This is achieved by providing a lumber feeder.

本発明によれば、木材送り装置は、左右の送りローラと中ローラとを含み、左右の送りローラの油圧モータの各々は、中ローラの一対の油圧モータの各々と油圧回路上直列に連結され、左右の送りローラの油圧モータは、その供給側で油圧回路上並列に連結され、中ローラの一対の油圧モータは、その吐き出し側で油圧回路上並列に連結される。油圧ポンプによって圧送され、切換え弁のポートから出た圧油は、送りローラの油圧モータに供給され、続いて送りローラの油圧モータから吐き出された圧油は、中ローラの油圧モータに供給され、油圧モータから吐き出された圧油は切換え弁のポートに戻るようになっており、油圧ポンプと切換え弁との間の油圧回路に、アキュムレータが放出弁と共に設けられている、木材送り装置を提供する。   According to the present invention, the wood feeding device includes left and right feed rollers and middle rollers, and each of the left and right feed roller hydraulic motors is connected in series on the hydraulic circuit with each of the middle roller pair of hydraulic motors. The left and right feed roller hydraulic motors are connected in parallel on the hydraulic circuit on the supply side, and the middle roller pair of hydraulic motors are connected in parallel on the hydraulic circuit on the discharge side. The pressure oil pumped by the hydraulic pump and discharged from the port of the switching valve is supplied to the feed roller hydraulic motor, and then the pressure oil discharged from the feed roller hydraulic motor is supplied to the middle roller hydraulic motor, A wood feed system is provided in which the hydraulic oil discharged from the hydraulic motor is returned to the port of the switching valve, and an accumulator is provided together with the discharge valve in the hydraulic circuit between the hydraulic pump and the switching valve. .

本発明の他の実施態様によれば、木材送り装置は、左右２つずつの送りローラと２つの中ローラとを含み、左右２つずつの送りローラの油圧モータの各々は、２つの中ローラのそれぞれ一対の油圧モータの各々と油圧回路上直列に連結され、左右２つずつの送りローラの油圧モータは、供給側で油圧回路上並列に連結され、２つの中ローラのそれぞれ一対の油圧モータは、吐き出し側で油圧回路上並列に連結される。油圧ポンプによって圧送され、切換え弁のポートから出た圧油は、送りローラの油圧モータに供給され、続いて送りローラの油圧モータから吐き出された圧油は、中ローラの油圧モータに供給され、油圧モータから吐き出された圧油は切換え弁のポートに戻るようになっており、油圧ポンプと切換え弁との間の油圧回路に、アキュムレータが放出弁と共に設けられている、木材送り装置を提供する。   According to another embodiment of the present invention, the lumber feeder comprises two left and right feed rollers and two middle rollers, and each of the left and right two feed roller hydraulic motors comprises two middle rollers. Each of the pair of hydraulic motors is serially connected on the hydraulic circuit, and the left and right two feed roller hydraulic motors are connected in parallel on the hydraulic circuit on the supply side, and each of the two middle rollers has a pair of hydraulic motors Are connected in parallel on the hydraulic circuit on the discharge side. The pressure oil pumped by the hydraulic pump and discharged from the port of the switching valve is supplied to the feed roller hydraulic motor, and then the pressure oil discharged from the feed roller hydraulic motor is supplied to the middle roller hydraulic motor, A wood feed system is provided in which the hydraulic oil discharged from the hydraulic motor is returned to the port of the switching valve, and an accumulator is provided together with the discharge valve in the hydraulic circuit between the hydraulic pump and the switching valve. .

本発明の更に他の実施態様によれば、木材送り装置は、左右２つずつの送りローラを含み、左右２つずつの送りローラの油圧モータは、それぞれ油圧回路上並列に連結され、左右の送りローラの油圧モータは、供給側および吐き出し側で油圧回路上並列に連結される。油圧ポンプによって圧送され、切換え弁のポートから出た圧油は、送りローラの油圧モータに供給され、続いて送りローラの油圧モータから吐き出された圧油は、切換え弁のポートに戻るようになっており、油圧ポンプと切換え弁との間の油圧回路に、アキュムレータが放出弁と共に設けられている、木材送り装置を提供する。   According to still another embodiment of the present invention, the wood feeding device includes two left and right feed rollers, and the hydraulic motors of the left and right two feed rollers are respectively connected in parallel in a hydraulic circuit, The feed roller hydraulic motors are connected in parallel in a hydraulic circuit on the supply side and the discharge side. The pressure oil pumped by the hydraulic pump and discharged from the port of the switching valve is supplied to the feed roller hydraulic motor, and the pressure oil discharged from the feed roller hydraulic motor is subsequently returned to the port of the switching valve. The invention also provides a wood feeding device in which an accumulator is provided together with a release valve in the hydraulic circuit between the hydraulic pump and the switching valve.

本発明の更に他の実施態様では、木材送り装置は、油圧モータによって回転される左右送りローラを含み、左右送りローラの油圧回路は、供給側および吐き出し側で油圧回路上並列に連結される。油圧ポンプによって圧送され、切換え弁のポートから出た圧油は、送りローラの油圧モータに供給され、続いて送りローラの油圧モータから吐き出された圧油は、切換え弁のポートに戻るようになっており、油圧ポンプと切換え弁との間の油圧回路に、増量アキュムレータが放出弁と共に設けられている、木材送り装置を提供する。   In still another embodiment of the present invention, the wood feeding device includes left and right feed rollers rotated by a hydraulic motor, and the hydraulic circuits of the left and right feed rollers are connected in parallel in hydraulic circuit on the supply side and the discharge side. The pressure oil pumped by the hydraulic pump and discharged from the port of the switching valve is supplied to the feed roller hydraulic motor, and the pressure oil discharged from the feed roller hydraulic motor is subsequently returned to the port of the switching valve. The invention also provides a wood feeding device in which an increase accumulator is provided together with a release valve in the hydraulic circuit between the hydraulic pump and the switching valve.

［作用］
本発明の木材送り装置によれば、油圧ポンプからの圧油は、増設されたアキュムレータに貯留され、左右の送りローラの油圧モータに供給されるべき圧油の流量を、貯留された圧油を、放出弁の開放により放出されて増量させる。そのため、本発明の木材送り装置は、左右の送りローラにより木材の高速送りを可能にする。 [Effect]
According to the wood feeding device of the present invention, the pressure oil from the hydraulic pump is stored in the added accumulator, and the pressure oil stored in the hydraulic motor of the left and right feed rollers is stored. , Release by the release of the release valve to increase. Therefore, the wood feeding device of the present invention enables high speed feeding of wood by the left and right feed rollers.

本発明による林業用ハーべスターの送り装置の油圧回路の図。FIG. 1 is a diagram of a hydraulic circuit of a feeder for a forestry harvester according to the invention. 本発明による林業用ハーべスターの送り装置の他の油圧回路の図。FIG. 6 is a diagram of another hydraulic circuit of the feeder for the forestry harvester according to the invention. 本発明による林業用ハーべスターの送り装置の更に他の油圧回。Yet another hydraulic circuit of the forest harvester feeder according to the invention. 本発明による林業用ハーべスターの送り装置の更に他の油圧回。Yet another hydraulic circuit of the forest harvester feeder according to the invention.

図１を参照すると、本発明が関係するハーベスターの木材送り装置の油圧回路の１つの実施態様が示されている。この実施態様では、木材送り装置は、左右の送りローラ２，３と中ローラ４とを含む。左右の送りローラ２，３の油圧モータＲ１，Ｌ１は、中ローラ４の一対の油圧モータＲ２，Ｌ２とそれぞれ油圧回路上直列に連結され、左右の送りローラ２，３の油圧モータＲ１，Ｌ１は、供給側が油圧回路上並列に連結され、中ローラ４の一対の油圧モータＲ２，Ｌ２は、吐き出し側が油圧回路上並列に連結される。かくして、油圧ポンプＰによって圧送され、切換え弁Ｖの切換えによりそのＢポートから出た圧油は、油圧モータＲ１，Ｌ１を回転駆動し、続いて油圧モータＲ１,L１から吐き出された圧油は、油圧モータＲ２，Ｌ２を回転駆動し、油圧モータＲ２，Ｌ２から吐き出された圧油は切換え弁のＡポートに戻るようになっている。   Referring to FIG. 1, one embodiment of the hydraulic circuit of a harvester lumber feeder to which the present invention relates is shown. In this embodiment, the wood feeding device includes left and right feed rollers 2 and 3 and a middle roller 4. The hydraulic motors R1 and L1 of the left and right feed rollers 2 and 3 are respectively connected in series with the pair of hydraulic motors R2 and L2 of the middle roller 4 on the hydraulic circuit, and the hydraulic motors R1 and L1 of the left and right feed rollers 2 and 3 are The supply side is connected in parallel in the hydraulic circuit, and the discharge side of the pair of hydraulic motors R2, L2 of the middle roller 4 is connected in parallel in the hydraulic circuit. Thus, the hydraulic oil pumped by the hydraulic pump P and discharged from the B port by switching of the switching valve V rotationally drives the hydraulic motors R1 and L1, and subsequently the hydraulic oil discharged from the hydraulic motors R1 and L1 is The hydraulic motors R2 and L2 are rotationally driven, and the pressure oil discharged from the hydraulic motors R2 and L2 is returned to the A port of the switching valve.

油圧ポンプＰと切換え弁Ｖとの間の油圧回路には、アキュムレータＱが設けられ、アキュムレータＱの上流には、放出弁Ｈが設けられている。放出弁Ｈは、逆止弁Cを有し、油圧ポンプＰからの圧油の一部はこの逆止弁を通ってアキュムレータＱに流入して貯留される。放出弁Ｈは、切換え弁Ｖの切換えと同期して操作されるようになっている。かくして、アキュムレータＱは、放出弁Ｈにより開放されてその中に貯留された圧油を放出し、これにより油圧ポンプＰから左右の送りローラの油圧モータに供給される圧油の流量を増量させる。そのため、油圧モータが高速回転し、その送りローラにより、木材を高速で送ることを可能にする。その際中ローラ４は、左右一対の油圧モータにより回転され木材の送りを補助する。   An accumulator Q is provided in the hydraulic circuit between the hydraulic pump P and the switching valve V, and a discharge valve H is provided upstream of the accumulator Q. The discharge valve H has a check valve C, and a part of the pressure oil from the hydraulic pump P flows into the accumulator Q through this check valve and is stored. The discharge valve H is operated in synchronization with the switching of the switching valve V. Thus, the accumulator Q is opened by the release valve H to release the pressure oil stored therein, thereby increasing the flow rate of the pressure oil supplied from the hydraulic pump P to the hydraulic motors of the left and right feed rollers. Therefore, the hydraulic motor rotates at a high speed, and the feed roller enables the wood to be fed at a high speed. At this time, the middle roller 4 is rotated by a pair of left and right hydraulic motors to assist the feeding of wood.

図２を参照すると、本発明による木材送り装置の他の実施態様が示されている。この実施態様では、送り装置は、左右２つずつの送りローラ２ａおよび２ｂ，３ａおよび３ｂと２つの中ローラ４ａ．４ｂとを含み、左右２つずつの送りローラの油圧モータＲ１ａ，Ｒ１ｂとＬ１ａ，Ｌ１ｂの各々は、２つの中ローラのそれぞれ一対の油圧モータＲ２ａ，Ｒ２ｂとＬ２ａ，Ｌ２ｂの各々と油圧回路上直列に連結され、左右２つずつの送りローラの油圧モータは、供給側が油圧回路上並列に連結され、２つの中ローラのそれぞれ一対の油圧モータは、吐き出し側が油圧回路上並列に連結される。油圧ポンプＰによって圧送され、切換え弁ＶのＢポートから出た圧油は、送りローラ２ａ，２ｂの油圧モータＲ１ａ，Ｌ１ｂに、また送りローラ３ａ，３ｂの油圧モータＬ１ａ，Ｌ１ｂに供給され、続いて送りローラの油圧モータから吐き出された圧油は、中ローラの油圧モータＲ２ａ，Ｒ２ｂに、また油圧モータＬ２ａ，Ｌ２ｂに供給され、油圧モータから吐き出された圧油は切換え弁ＶのＡポートに戻るようになっている。油圧ポンプと切換え弁との間の油圧回路には、図１の実施態様におけると同様にアキュムレータＱが設けられ、その上流には、逆止弁Ｃを有する放出弁Ｈが設けられている。アキュムレータの働きは、図１の実施態様におけるのと同じである。   Referring to FIG. 2, another embodiment of a wood feeding device according to the present invention is shown. In this embodiment, the feeder comprises two left and right feed rollers 2a and 2b, 3a and 3b and two middle rollers 4a. Each of the hydraulic motors R1a, R1b and L1a, L1b of the two feed rollers on the left and right sides, including 4b, is in series on the hydraulic circuit with each of the pair of hydraulic motors R2a, R2b and L2a, L2b of the two middle rollers. The hydraulic motors of the left and right two feed rollers are connected in parallel on the hydraulic circuit on the supply side, and the hydraulic motors of the two middle rollers are connected on the hydraulic circuit in parallel on the discharge side. The pressure oil delivered by the hydraulic pump P and delivered from the B port of the switching valve V is supplied to the hydraulic motors R1a and L1b of the feed rollers 2a and 2b and to the hydraulic motors L1a and L1b of the feed rollers 3a and 3b, and so on The pressure oil discharged from the feed roller hydraulic motor is supplied to the middle roller hydraulic motors R2a and R2b and to the hydraulic motors L2a and L2b, and the pressure oil discharged from the hydraulic motor is transferred to the A port of the switching valve V It is supposed to go back. In the hydraulic circuit between the hydraulic pump and the switching valve, as in the embodiment of FIG. 1, an accumulator Q is provided, upstream of which a release valve H with a non-return valve C is provided. The operation of the accumulator is the same as in the embodiment of FIG.

図３は、本発明による木材送り装置の更に他の実施態様の油圧回路を示す。この実施態様では、木材送り装置は、左右２つずつの送りローラ２ａおよび２ｂ，３ａおよび３ｂを含み、左右２つずつの送りローラの油圧モータＲ１ａ，Ｒ１ｂおよびＬ１ａ，Ｌ１ｂは、それぞれ油圧回路上並列に連結され、左右の送りローラの油圧モータは、供給側および吐き出し側で油圧回路上並列に連結される。油圧ポンプによって圧送され、切換え弁ＶのＢポートから出た圧油は、送りローラの油圧モータに供給され、続いて送りローラの油圧モータから吐き出された圧油は、切換え弁のＡポートに戻るようになっており、油圧ポンプと切換え弁との間の油圧回路には、図１の実施態様におけると同様にアキュムレータＱが設けられ、その上流には、逆止弁Ｃを有する放出弁Ｈが設けられている。アキュムレータの働きは、図１の実施態様におけるのと同じである。   FIG. 3 shows a hydraulic circuit of still another embodiment of a wood feeding device according to the present invention. In this embodiment, the wood feeding device includes two right and left feed rollers 2a and 2b, 3a and 3b, and the left and right two feed roller hydraulic motors R1a and R1b and L1a and L1b are respectively on the hydraulic circuit. The hydraulic motors of the left and right feed rollers connected in parallel are connected in parallel on the hydraulic circuit on the supply side and the discharge side. The hydraulic oil pumped by the hydraulic pump and discharged from the B port of the switching valve V is supplied to the hydraulic motor of the feed roller, and subsequently the hydraulic oil discharged from the hydraulic motor of the feed roller returns to the A port of the switching valve In the hydraulic circuit between the hydraulic pump and the switching valve, as in the embodiment of FIG. 1, an accumulator Q is provided, upstream of which is a discharge valve H with a non-return valve C. It is provided. The operation of the accumulator is the same as in the embodiment of FIG.

図４は、本発明による木材送り装置の更に他の実施態様の油圧回路を示す。この実施態様では、送り装置は、油圧モータＲ１，Ｌ１によって回転駆動される左右送りローラ２，３を含む。左右送りローラの油圧回路は、供給側および吐き出し側で油圧回路上並列に連結される。油圧ポンプＰによって圧送され、切換え弁ＶのＢポートから出た圧油は、送りローラの油圧モータに供給され、続いて送りローラの油圧モータから吐き出された圧油は、切換え弁のＡポートに戻るようになってlいる。油圧ポンプＰと切換え弁Ｖとの間の油圧回路には、図１の実施態様におけると同様にアキュムレータＱが設けられ、その上流には、逆止弁Ｃを有する放出弁Ｈが設けられている。アキュムレータの働きは、図１の実施態様におけるのと同じである。   FIG. 4 shows a hydraulic circuit of still another embodiment of a wood feeding device according to the present invention. In this embodiment, the feed device includes left and right feed rollers 2 and 3 rotationally driven by hydraulic motors R1 and L1. The hydraulic circuits of the left and right feed rollers are connected in parallel on the hydraulic circuit on the supply side and the discharge side. The pressure oil delivered by the hydraulic pump P and delivered from the B port of the switching valve V is supplied to the feed roller hydraulic motor, and subsequently the pressure oil discharged from the feed roller hydraulic motor is delivered to the A port of the switching valve. I'm getting back. In the hydraulic circuit between the hydraulic pump P and the switching valve V, as in the embodiment of FIG. 1, an accumulator Q is provided, upstream of which a discharge valve H having a check valve C is provided. . The operation of the accumulator is the same as in the embodiment of FIG.

以上からわかるように、木材の高速送りに必要とされる圧油の流量は、放出弁の逆止弁を通してアキュムレータに貯留された圧油を送りローラの油圧モータに供給される圧油に補給することによって満たされる。   As can be seen from the above, the flow rate of pressure oil required for high-speed feeding of wood replenishes the pressure oil stored in the accumulator through the check valve of the release valve to the pressure oil supplied to the hydraulic motor of the feed roller. Satisfied by

Ｐ 油圧ポンプ
Ｑ アキュムレータ
Ｖ 放出弁
Ａ ポート
Ｂ ポート
Ｈ 放出弁
Ｃ 逆止弁
２ 送りローラ
２ａ 送りローラ
２ｂ 送りローラ
３ 送りローラ
３ａ 送りローラ
３ｂ 送りローラ
４ 中ローラ
４ａ 中ローラ
４ｂ 中ローラ
Ｒ１ 油圧モータ
Ｌ１ 油圧モータ
Ｒ２ 油圧モータ
Ｌ２ 油圧モータ
Ｒ１ａ 油圧モータ
Ｒ１ｂ 油圧モータ
Ｌ１ａ 油圧モータ
Ｌ１ｂ 油圧モータ
Ｒ２ａ 油圧モータ
Ｒ２ｂ 油圧モータ
Ｌ２ａ 油圧モータ
Ｌ２ｂ 油圧モータ P Hydraulic pump Q Accumulator V Release valve A Port B Port H Release valve C Check roller 2a Feed roller 2b Feed roller 3 Feed roller 3a Feed roller 3b Feed roller 4 Middle roller 4a Middle roller 4b Middle roller R1 Hydraulic motor L1 Hydraulic Motor R2 Hydraulic Motor L2 Hydraulic Motor R1a Hydraulic Motor R1b Hydraulic Motor L1a Hydraulic Motor L1b Hydraulic Motor R2a Hydraulic Motor R2b Hydraulic Motor L2b Hydraulic Motor L2a Hydraulic Motor L2b Hydraulic Motor

Claims (5)

木材の高速送りを可能にするため、油圧ポンプから左右の送りローラの油圧モータに供給されるべき圧油の流量を、放出弁の開放により増量させるためのアキュムレータを増設してなる、林業用ハーベスターにおける木材送り装置。   A forestry harvester comprising an additional accumulator for increasing the flow rate of pressure oil to be supplied from the hydraulic pump to the hydraulic motors of the left and right feed rollers to enable high-speed feeding of wood by opening the release valve. Wood feeding equipment. 材木送り装置は、左右の送りローラと中ローラとを含み、左右の送りローラの油圧モータの各々は、中ローラの一対の油圧モータの各々と油圧回路上直列に連結され、左右の送りローラの油圧モータは、その供給側で油圧回路上並列に連結され、中ローラの一対の油圧モータは、吐き出し側で油圧回路上並列に連結され、油圧ポンプによって圧送され、切換え弁のポートから出た圧油は、送りローラの油圧モータに供給され、続いて送りローラの油圧モータから吐き出された圧油は、中ローラの油圧モータに供給され、油圧モータから吐き出された圧油は切換え弁のポートに戻るようになっており、油圧ポンプと切換え弁との間の油圧回路に、アキュムレータが放出弁と共に設けられている、林業用ハーベスターにおける木材送り装置。   The lumber feed device includes left and right feed rollers and middle rollers, and each of the left and right feed roller hydraulic motors is hydraulically connected in series with each of the middle roller pair of hydraulic motors, and the left and right feed rollers are The hydraulic motor is connected in parallel on the hydraulic circuit on the supply side, and a pair of hydraulic motors of the middle roller are connected on the hydraulic circuit in parallel on the discharge side, are pumped by the hydraulic pump, and the pressure comes out from the port of the switching valve Oil is supplied to the feed roller hydraulic motor, and subsequently the pressure oil discharged from the feed roller hydraulic motor is supplied to the middle roller hydraulic motor, and the pressure oil discharged from the hydraulic motor is transferred to the switch valve port A wood feeding device in a forestry harvester, adapted to return, wherein an accumulator is provided together with a release valve in the hydraulic circuit between the hydraulic pump and the switching valve. 木材送り装置は、左右２つずつの送りローラと２つの中ローラとを含み、左右２つずつの送りローラの油圧モータの各々は、２つの中ローラのそれぞれ一対の油圧モータの各々と油圧回路上直列に連結され、左右２つずつの送りローラの油圧モータは、供給側で油圧回路上並列に連結され、２つの中ローラのそれぞれ一対の油圧モータは、吐き出し側で油圧回路上並列に連結され、２つの中ローラのそれぞれ一対の油圧モータは、吐き出し側で油圧回路上並列に連結され、油圧ポンプによって圧送され、切換え弁のポートから出た圧油は、送りローラの油圧モータに供給され、続いて送りローラの油圧モータから吐き出された圧油は、中ローラの油圧モータに供給され、油圧モータから吐き出された圧油は切換え弁のポートに戻るようになっており、油圧ポンプと切換え弁との間の油圧回路に、アキュムレータが放出弁と共に設けられている、林業用ハーベスターにおける木材送り装置。   The wood feeding device includes two left and right feed rollers and two middle rollers, and each of the left and right two feed roller hydraulic motors is provided with a hydraulic circuit and a pair of each of the two middle roller hydraulic motors. The hydraulic motors of the upper and lower two feed rollers are connected in parallel in the hydraulic circuit on the supply side, and the pair of hydraulic motors of the two middle rollers are connected in parallel on the hydraulic circuit at the discharge side. Each of the pair of hydraulic motors of the two middle rollers is connected in parallel on the hydraulic circuit on the discharge side, pumped by the hydraulic pump, and the pressure oil coming out of the port of the switching valve is supplied to the hydraulic motor of the feed roller. Subsequently, the pressure oil discharged from the feed roller hydraulic motor is supplied to the middle roller hydraulic motor, and the pressure oil discharged from the hydraulic motor returns to the port of the switching valve. Cage, the hydraulic circuit between the hydraulic pump and the switching valve, the accumulator is provided with discharge valve, timber feeding apparatus in forestry harvester. 木材送り装置は、左右２つずつの送りローラを含み、左右２つずつの送りローラの油圧モータは、それぞれ油圧回路上並列に連結され、左右の送りローラの油圧モータは、供給側および吐き出し側で油圧回路上並列に連結され、油圧ポンプによって圧送され、切換え弁のポートから出た圧油は、送りローラの油圧モータに供給され、続いて送りローラの油圧モータから吐き出された圧油は、切換え弁のポートに戻るようになっており、油圧ポンプと切換え弁との間の油圧回路に、アキュムレータが放出弁と共に設けられている、林業用ハーベスターにおける木材送り装置。   The wood feeding device includes left and right two feed rollers, and the hydraulic motors of the left and right two feed rollers are respectively connected in parallel on the hydraulic circuit, and the hydraulic motors of the left and right feed rollers are on the supply side and discharge side. The hydraulic oil is connected in parallel on the hydraulic circuit, pumped by the hydraulic pump, and the pressure oil from the port of the switching valve is supplied to the hydraulic motor of the feed roller and then the pressure oil discharged from the hydraulic motor of the feed roller is A wood feeding device in a forestry harvester, adapted to return to the port of the switching valve, and in the hydraulic circuit between the hydraulic pump and the switching valve, an accumulator is provided together with a release valve. 木材送り装置は、油圧モータによって回転される左右送りローラを含み、左右送りローラの油圧回路は、供給側および吐き出し側で油圧回路上並列に連結され、油圧ポンプによって圧送され、切換え弁のポートから出た圧油は、送りローラの油圧モータに供給され、続いて送りローラの油圧モータから吐き出された圧油は、切換え弁のポートに戻るようになっており、油圧ポンプと切換え弁との間の油圧回路に、アキュムレータが放出弁と共に設けられている、林業用ハーベスターにおける木材送り装置。   The wood feeding device includes left and right feed rollers rotated by a hydraulic motor, and the hydraulic circuits of the left and right feed rollers are connected in parallel in the hydraulic circuit on the supply side and the discharge side, pumped by a hydraulic pump, and ported from the switching valve port The discharged pressure oil is supplied to the feed roller hydraulic motor, and then the pressure oil discharged from the feed roller hydraulic motor is returned to the port of the switching valve, and between the hydraulic pump and the switching valve A wood feed device in a forestry harvester where an accumulator is provided with a release valve in the hydraulic circuit of.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3587681A (en) * 1967-06-09 1971-06-28 Rotenburger Metallwerke Gmbh Apparatus for debranching and/or debarking felled trees
US4515281A (en) * 1982-07-21 1985-05-07 William Maki Radio-controlled skyline carriage
JPS63106404A (en) * 1986-10-22 1988-05-11 Komatsu Ltd Hydraulic device for driving inertial body
JPH03505281A (en) * 1988-06-22 1991-11-21 ティンベルヤーク　アクティエボラーグ forest mower
JP2015149897A (en) * 2014-02-10 2015-08-24 松本　良三 Branch cutter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3587681A (en) * 1967-06-09 1971-06-28 Rotenburger Metallwerke Gmbh Apparatus for debranching and/or debarking felled trees
US4515281A (en) * 1982-07-21 1985-05-07 William Maki Radio-controlled skyline carriage
JPS63106404A (en) * 1986-10-22 1988-05-11 Komatsu Ltd Hydraulic device for driving inertial body
JPH03505281A (en) * 1988-06-22 1991-11-21 ティンベルヤーク　アクティエボラーグ forest mower
JP2015149897A (en) * 2014-02-10 2015-08-24 松本　良三 Branch cutter

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