TW201302574A - Working vehicle - Google Patents
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Abstract
Description
本發明涉及一種具有通過電動油壓泵產生的油壓而進行動作的作業裝置的作業車輛，特別地，涉及可以再生伴隨作業而獲得的能量的裝置。
The present invention relates to a work vehicle having a work device that operates by hydraulic pressure generated by an electric hydraulic pump, and more particularly to a device that can regenerate energy obtained in accordance with work.
例如，作為作業車輛的一種的垃圾收集車，將車身（貨箱）及油壓式裝載裝置的垃圾收集裝置安裝在貨車底盤上而構成。
目前，垃圾收集車通過動力輸出（PTO）機構獲取發動機的輸出而驅動油壓泵，但近年來，已普及通過從作業裝置驅動用的電池供給的電力，由電動機驅動油壓泵的電動油壓式裝置。
例如，在專利文獻1中記載了可以通過PTO裝置及電動機驅動油壓泵的作業車輛。
專利文獻1：日本特開2009－262759號公報
For example, a garbage collection vehicle which is a type of work vehicle is constructed by attaching a vehicle body (cargo container) and a garbage collection device of a hydraulic loading device to a truck chassis.
At present, the garbage collection vehicle drives the hydraulic pump by acquiring the output of the engine through a power output (PTO) mechanism. However, in recent years, electric power supplied from a battery for driving the working device has been popularized, and the electric oil pressure of the hydraulic pump is driven by the electric motor. Device.
For example, Patent Document 1 describes a work vehicle that can drive a hydraulic pump by a PTO device and an electric motor.
Patent Document 1: Japanese Laid-Open Patent Publication No. 2009-262759
但是，在上述電動油壓式作業車輛中，電池充電只能通過設置在垃圾站等的設備進行，在車輛運行中，電池電力只是被消耗。因此，為了使用電力進行全部的作業，必須搭載大容量的電池。
另外，雖然近年利用在車輛減速時獲得的再生電力對電池進行充電的混合動力車輛已經普及，但因為通常垃圾收集裝置等作業裝置安裝在現有的貨車底盤上，所以要進行與車輛的協調控制不現實，且很難從底盤側接受電力供給。
因此，在這種電動油壓式作業裝置中，要求充分使用在作業裝置內得到的能量。
鑒於上述問題，本發明的課題提供可以使作業時得到的能量再生的作業車輛。
本發明通過下述解決單元解決上述課題。
技術方案1涉及的發明是一種作業車輛，其具有：作業裝置，其由油壓致動器驅動；泵，其產生使至少一部分上述油壓致動器動作的油壓；電動發電機，其驅動上述泵；以及電池，其向上述電動發電機供給電力，其特徵在於，上述泵具有由上述油壓致動器受到外力時噴出的油驅動，驅動上述電動發電機而使其發電的功能，具有充電單元，其將上述電動發電機產生的電力向上述電池進行充電。
由此，通過利用從油壓致動器向泵逆流的油將泵作為油壓電動機驅動，可以從泵側驅動電動發電機而發電，使能量再生，對電池充電。
技術方案2涉及的發明為，如技術方案1記載的作業車輛，其特徵在於，上述油壓致動器是單動壓力缸，上述泵由從上述單動壓力缸向上述泵側逆流的油驅動。
由此，可以通過簡單的結構獲得上述效果。
技術方案3涉及的發明為技術方案1或技術方案2記載的作業車輛，其特徵在於，上述作業裝置是在容器狀的車身內壓縮並裝載垃圾的垃圾收集裝置，上述油壓致動器驅動排出板，該排出板在垃圾排出時將垃圾推出，並且在垃圾裝載時受到垃圾的壓縮力而移動。
由此，可以將壓縮垃圾時消耗的能量的一部分作為電力再生，在後面的裝載作業等中使用。
發明的效果
如上所述，根據本發明，可以提供可以使在作業時獲得的能量再生的作業車輛。
However, in the above-described electric hydraulic working vehicle, battery charging can be performed only by equipment installed in a garbage station or the like, and battery power is consumed only during vehicle operation. Therefore, in order to perform all operations using electric power, it is necessary to mount a large-capacity battery.
In addition, although hybrid vehicles that use the regenerative electric power obtained when the vehicle decelerates to charge the battery have been popular in recent years, since the working device such as the garbage collecting device is usually installed on the existing truck chassis, coordinated control with the vehicle is not performed. Reality, and it is difficult to receive power supply from the chassis side.
Therefore, in such an electric hydraulic working device, it is required to sufficiently use the energy obtained in the working device.
In view of the above problems, an object of the present invention is to provide a work vehicle that can regenerate energy obtained during work.
The present invention solves the above problems by the following solution unit.
The invention according to claim 1 is a work vehicle having: a working device driven by a hydraulic actuator; a pump that generates a hydraulic pressure that causes at least a part of the hydraulic actuator to operate; and a motor generator that drives The pump and the battery that supply electric power to the motor generator, wherein the pump has a function of driving the motor generator to generate electric power when the hydraulic actuator is driven by an external force, and has a function of generating electric power. A charging unit that charges electric power generated by the motor generator to the battery.
Thus, by driving the pump as a hydraulic motor by the oil that flows back from the hydraulic actuator to the pump, the motor generator can be driven from the pump side to generate electric power, and the energy can be regenerated to charge the battery.
According to a second aspect of the invention, in the work vehicle according to the first aspect, the hydraulic actuator is a single-acting pressure cylinder, and the pump is driven by oil that flows backward from the single-acting cylinder to the pump side. .
Thereby, the above effects can be obtained by a simple structure.
The invention according to claim 1 is the work vehicle according to the first aspect or the second aspect, wherein the working device is a garbage collection device that compresses and loads garbage in a container-shaped vehicle body, and the hydraulic actuator drives the discharge. A plate that pushes out the garbage when the garbage is discharged, and moves by the compressive force of the garbage when the garbage is loaded.
Thereby, a part of the energy consumed when the garbage is compressed can be regenerated as electric power, and can be used in a subsequent loading operation or the like.
Advantageous Effects of Invention As described above, according to the present invention, it is possible to provide a work vehicle that can regenerate energy obtained during work.
本發明通過利用與其他油壓設備類獨立的電動油壓泵，驅動垃圾收集車的排出壓力缸，並且，利用在垃圾壓縮時擠壓排出板而從排出壓力缸逆流的油使泵旋轉，驅動電動發電機而進行發電，從而解決提供可以再生在作業時得到的能量的作業車輛的課題。
實施例
下面，對於應用本發明的作業車輛的實施例進行說明。
在實施例中，作業車輛是具有垃圾收集裝置的垃圾收集車。
另外，垃圾收集裝置例如是壓力式，且通過從由電動機驅動的油壓泵供給的油壓驅動的裝置。
第1圖是實施例的垃圾收集車的側視圖。
第2圖是從斜後方的斜上方側觀察實施例的垃圾收集車的後方斜視圖。
如第1圖、第2圖所示，垃圾收集裝置1安裝在貨車底盤2上，構成作為電動作業車輛的一種的垃圾收集車。
貨車底盤2具有框架3、發動機4、變速器5、動力輸出（PTO）機構6等。
框架3是搭載駕駛室及垃圾收集裝置1，並且，安裝傳動系統或懸架等的構造部件。
發動機4（參照第5圖）是車輛行駛用動力源，例如是柴油發動機等內燃機。
變速器5使發動機4的旋轉輸出增減速，並經由螺旋軸及最終減速裝置傳遞至後輪車軸。
PTO機構6設置在變速器5上，獲取發動機4的旋轉輸出而傳遞至泵120。
垃圾收集裝置1具有車身10、尾門料斗20、逆流防止壓力缸C1、升降壓力缸C2、自動鎖止壓力缸C3、上下移動壓力缸C4、推入壓力缸C5、排出壓力缸C6等。
車身10在車輛後方側設置開口，以箱狀構成。
車身10是在內部收容被回收的垃圾的部分。
另外，在車身10內部設有將收容的垃圾向後方側推出的排出板11。
尾門料斗20配置為，實際上閉塞車身10的後部開口。
尾門料斗20圍繞設置在車身10的開口上端部的鉸鏈轉動，可以使車身10的開口開閉。
尾門料斗20具有壓縮通過裝載板21投入的垃圾，並且壓入車身10內的裝載裝置。
裝載裝置通過沿規定軌跡驅動的裝載板21撈起投入到尾門料斗20下部的垃圾，推入車身10內。
逆流防止壓力缸C1是為了防止裝載的垃圾逆流，而進行逆流防止用擋板的推入及反轉動作的油壓缸。
升降壓力缸C2是使尾門料斗20轉動，而使車身10的開口開閉的油壓缸。
自動鎖止壓力缸C3是驅動鎖止機構的油壓缸，該鎖止機構鎖止尾門料斗20而限制相對於車身10的相對旋轉。
上下移動壓力缸C4是使尾門料斗20的裝載板21上下移動的油壓缸。
推入壓力缸C5是進行裝載板21的推入動作及反轉動作的油壓缸。
排出壓力缸C6是使將裝載在車身10內的垃圾向車輛後方側推出而排出的排出板進行排出及返回動作的油壓缸。
上述說明的各個壓力缸C1至C6，通過以下說明的油壓回路，經由油壓管線L供給油壓而驅動。
第3圖是表示實施例的垃圾收集裝置中的主油壓回路的結構的圖。
驅動壓力缸C1至C5的主油壓回路100構成為，具有動作油箱110、泵120、儲壓器130、篩檢程式140、穩壓器150、動作控制閥160等。
此外，排出壓力缸C6由與上述主油壓回路獨立的排出壓力缸驅動機構300驅動。對此，後面詳細說明。
動作油箱110是貯存驅動各個壓力缸C1至C6的動作油的容器。
泵120是對貯存在動作油箱110中的動作油加壓而噴出的齒輪泵。泵120通過上述PTO機構及電動機120驅動。對於該驅動機構，後面詳細說明。
儲壓器130是蓄積從泵120噴出的高壓動作油的儲壓容器。
儲壓器130設置在穩壓器150和動作控制閥160之間。
篩檢程式140過濾從動作控制閥160及穩壓器150返回動作油箱110的動作油。
穩壓器150是控制從泵120輸送至動作控制閥160的動作油的流量的裝置。
動作控制閥160將從泵120經由穩壓器150及儲壓器130供給的動作油，經由油壓管線L向各個壓力缸C1至C5供給。
第4圖是表示動作控制閥160的結構的圖。
動作控制閥160具有作為三位方向控制閥的電磁閥SV1至SV4等而構成。
各個電磁閥SV1至SV4，對應於從未圖示的控制裝置供給的驅動電力，切換向各個壓力缸C1至C5的油壓供給的有無及方向。
電磁閥SV1向逆流防止壓力缸C1供給油壓。
電磁閥SV2向升降壓力缸C2及自動鎖止壓力缸C3供給油壓。
電磁閥SV3向上下移動壓力缸C4供給油壓。
電磁閥SV4向推入壓力缸C5供給油壓。
另外，在從電磁閥SV1、SV2、SV4向各個壓力缸供給油壓的油路上設置安全閥等，其在壓力大於或等於規定值時，使動作油向動作油箱110側放出。
第5圖是表示實施例的垃圾收集車上的油壓泵驅動機構的結構的示意圖。
第5圖（a）是垃圾收集車的示意側視圖，第5圖（b）表示示意俯視圖。
如第5圖所示，在實施例中，泵120可以選擇使用PTO機構6而由發動機4的輸出進行驅動、以及由電動的電動機210驅動。
垃圾收集裝置1具有電動機210、電池220、逆變器230等。
電動機210是設置在泵120的PTO機構6側的端部，且與泵120的輸入軸同軸的例如AC電動機。
作為電動機210，例如可以使用IM電動機、PM電動機、IPM電動機等同步電動機。
電動機210的旋轉軸（輸出軸）與泵120的輸入軸連接。
在電動機210的旋轉軸上與泵120側相反一側的端部，經由動力傳遞軸連接PTO機構6等。
電池220例如是鋰離子電池、鎳氫電池、鉛蓄電池等2次電池，其供給電動機210的驅動用電力。
電池220例如除了可以在垃圾收集車的基地（垃圾站）充電以外，也可以使用再生發電單元在車輛使用中進行補充充電。
另外，電池220也可以通過由排出壓力缸驅動機構300進行的能量再生進行充電。對於這一點後面詳細說明。
電池220例如搭載在垃圾收集裝置1的下部（地板下），且搭載在輪距之間等。
逆變器230對電池220輸出的電力進行DC－AC變換，向電動機210及後述的排出壓力缸驅動機構300的電動發電機320供給，驅動電動機210及電動發電機320，並且，控制電動機210的輸出。
另外，垃圾收集裝置1具有下述說明的排出壓力缸驅動機構300。
第6圖是表示排出壓力缸驅動機構的結構的示意圖。
第7圖是表示垃圾收集裝置的動作的示意圖，第7圖（a）表示裝載垃圾時的狀態，第7圖（b）表示排出垃圾時的狀態。
第8圖是表示由排出壓力缸驅動機構進行的電池充放電時的動作的圖，第8圖（a）表示使用電池220的電力排出垃圾時的動作，第8圖（b）表示裝載垃圾時，由電動發電機320發電，對電池220進行充電時的動作。
排出壓力缸驅動機構300向作為單動壓力缸的排出壓力缸C6供給油壓，在第7圖（b）所示的垃圾排出時驅動排出壓力缸C6，並且，在第7圖（a）所示的垃圾G向車身10內的裝載時，利用通過垃圾G的壓縮力（反作用力）將排出板11向車輛前方側壓回的動作而進行發電，進行能量再生。
排出壓力缸驅動機構300構成為，具有泵310、電動發電機320、電磁逆止閥330等。
泵310是設置在連接動作油箱110和排出壓力缸C6的油壓管線上的例如齒輪泵等。
作為單動壓力缸的排出壓力缸C6，通過在該油壓管線中雙向地流過動作油而伸縮驅動。
泵310從動作油箱110吸取動作油，加壓後向排出壓力缸C6噴出，如第7圖（b）所示，驅動排出壓力缸C6，以使排出板11向車輛後方側移動，將垃圾G從車身10推出。
另外，泵310如第7圖（a）所示具有下述功能，即，在垃圾裝載時將排出板11向車輛前方側壓回時（排出壓力缸C6收縮時），利用從排出壓力缸C6向動作油箱110側逆流的動作油，作為油壓電動機而被驅動。
電動發電機320在排出板11推出垃圾G時（排出壓力缸C6伸出時），通過從逆變器230供給的電力，驅動泵310。
這時，電動發電機320如第8圖（a）所示，消耗電池220的電力而被驅動。
另外，電動發電機320如第8圖（b）所示，具有下述功能，即，在將排出板11壓回時，通過泵310旋轉驅動而進行發電。
產生的電力經由逆變器230向電池220充電。
這時，逆變器230也作為充電單元起作用。
此外，在不使用垃圾G的反作用力而將排出板11向車輛前方側拉入的情況下，只要使電動發電機320反轉，將泵310向與垃圾G排出時相反的方向驅動即可。
電磁逆止閥330設置在泵310與動作油箱110間的管線上。
在垃圾收集裝置1通常使用時（收集作業時），電磁逆止閥330被封鎖，排出壓力缸C6將排出板11保持在當前的位置。
並且，在垃圾裝載時，利用從尾門料斗20壓入的垃圾G的壓縮力（反作用力），按壓排出板11，如果排出壓力缸C6的壓力大於或等於規定值（例如，20MPa），則電磁逆止閥330打開，排出板11向車輛前方側移動，並且，排出壓力缸C6使動作油向動作油箱110側逆流。
這時，如第8圖（b）所示，動作油使泵310旋轉，驅動電動發電機320而發電。產生的電力經由逆變器230向電池220供給，對其充電。
如上所述，根據本實施例，通過利用在垃圾G裝載時從排出壓力缸C6逆流至泵310的動作油，將泵310作為油壓電動機驅動，可以從泵310側驅動電動發電機320而進行發電。
因此，可以通過簡單的結構，使主油壓回路100驅動裝載板21，使壓縮垃圾的能量的一部分再生，對電池220進行充電，從而可以實現能量節省化。
（變形例）
本發明不限定於上述說明的實施例，可以進行各種變形或變更，其均屬於本發明的技術範圍。
（1）在上述實施例中，垃圾收集裝置是例如壓力式（壓縮板式）裝置，但本發明並不限定於此，例如，也可以應用於旋轉板式等其他類型的垃圾收集裝置。
（2）在實施例中，可以從垃圾收集裝置的排出壓力缸獲得再生能量，但也可以使用從其他油壓致動器逆流的油發電。例如，也可以使用尾門料斗由於自重而下降時，從使尾門料斗上升的升降壓力缸逆流的油發電。
（3）本發明也可以應用於搭載垃圾收集裝置以外的作業裝置的作業車輛。例如，在利用油壓缸使搭載在貨車底盤上的集裝箱升降的動力裝載機中，也可以使用在集裝箱下降時從油壓缸逆流的油發電。
另外，在可以使貨箱升降的翻斗車中，也可以使用在貨箱下降時從油壓缸逆流的油發電。The present invention drives a discharge cylinder of a garbage collection vehicle by using an electric hydraulic pump independent of other hydraulic equipment, and rotates the pump by driving the discharge plate from the discharge cylinder while the garbage is compressed. Power generation by a motor generator solves the problem of providing a work vehicle that can regenerate energy obtained during work.
EXAMPLES Hereinafter, an embodiment of a work vehicle to which the present invention is applied will be described.
In an embodiment, the work vehicle is a garbage collection vehicle having a garbage collection device.
Further, the garbage collection device is, for example, a pressure type device that is driven by oil pressure supplied from a hydraulic pump driven by a motor.
Fig. 1 is a side view of the garbage collection vehicle of the embodiment.
Fig. 2 is a rear perspective view of the garbage collection vehicle of the embodiment as seen obliquely from the obliquely rear side.
As shown in Fig. 1 and Fig. 2, the garbage collection device 1 is attached to the truck chassis 2 to constitute a garbage collection vehicle which is a type of electric work vehicle.
The truck chassis 2 has a frame 3, an engine 4, a transmission 5, a power output (PTO) mechanism 6, and the like.
The frame 3 is a structural member in which a cab and a garbage collection device 1 are mounted, and a transmission system, a suspension, or the like is attached.
The engine 4 (refer to Fig. 5) is a power source for driving a vehicle, and is, for example, an internal combustion engine such as a diesel engine.
The transmission 5 accelerates and decelerates the rotational output of the engine 4 and transmits it to the rear axle via the screw shaft and the final reduction gear.
The PTO mechanism 6 is disposed on the transmission 5, and receives the rotational output of the engine 4 and transmits it to the pump 120.
The garbage collection device 1 includes a vehicle body 10, a tailgate hopper 20, a backflow prevention cylinder C1, a lift cylinder C2, an automatic lock cylinder C3, a vertical movement cylinder C4, a push cylinder C5, a discharge cylinder C6, and the like.
The vehicle body 10 is provided with an opening on the rear side of the vehicle and is formed in a box shape.
The vehicle body 10 is a portion that houses the collected garbage inside.
Further, inside the vehicle body 10, a discharge plate 11 for pushing the stored garbage to the rear side is provided.
The tailgate hopper 20 is configured to substantially close the rear opening of the body 10.
The tailgate hopper 20 is rotated about a hinge provided at an upper end portion of the opening of the vehicle body 10, so that the opening of the vehicle body 10 can be opened and closed.
The tailgate hopper 20 has a loading device that compresses the garbage that is loaded through the loading plate 21 and is pressed into the vehicle body 10.
The loading device picks up the garbage thrown into the lower portion of the tailgate hopper 20 by the loading plate 21 driven along the predetermined trajectory, and pushes it into the vehicle body 10.
The backflow prevention cylinder C1 is a hydraulic cylinder that performs a push-in and reverse operation of the backflow prevention baffle in order to prevent backflow of the loaded garbage.
The lift cylinder C2 is a hydraulic cylinder that turns the tailgate hopper 20 to open and close the opening of the vehicle body 10.
The automatic lock cylinder C3 is a hydraulic cylinder that drives a lock mechanism that locks the tailgate hopper 20 to restrict relative rotation with respect to the vehicle body 10.
The up-and-down moving cylinder C4 is a hydraulic cylinder that moves the loading plate 21 of the tailgate hopper 20 up and down.
The push cylinder C5 is a hydraulic cylinder that performs a pushing operation and a reverse operation of the loading plate 21.
The discharge cylinder C6 is a hydraulic cylinder that discharges and returns the discharge plate that is discharged from the vehicle body 10 to the vehicle rear side and is discharged.
Each of the pressure cylinders C1 to C6 described above is driven by hydraulic pressure supplied from the hydraulic line L by a hydraulic circuit to be described below.
Fig. 3 is a view showing the configuration of a main hydraulic circuit in the garbage collection device of the embodiment.
The main hydraulic circuit 100 that drives the pressure cylinders C1 to C5 is configured to include an operating oil tank 110, a pump 120, an accumulator 130, a screening program 140, a regulator 150, an operation control valve 160, and the like.
Further, the discharge cylinder C6 is driven by a discharge cylinder driving mechanism 300 that is independent of the above-described main hydraulic circuit. This will be described in detail later.
The operating oil tank 110 is a container that stores operating oil that drives the respective pressure cylinders C1 to C6.
The pump 120 is a gear pump that pressurizes the hydraulic oil stored in the hydraulic oil tank 110 and ejects it. The pump 120 is driven by the PTO mechanism and the motor 120 described above. This drive mechanism will be described in detail later.
The accumulator 130 is a pressure storage container that accumulates high-pressure hydraulic oil discharged from the pump 120.
The accumulator 130 is disposed between the regulator 150 and the action control valve 160.
The screening program 140 filters the hydraulic oil that has returned from the operation control valve 160 and the regulator 150 to the operating oil tank 110.
The regulator 150 is a device that controls the flow rate of the hydraulic oil that is sent from the pump 120 to the operation control valve 160.
The operation control valve 160 supplies the hydraulic oil supplied from the pump 120 via the regulator 150 and the accumulator 130 to the respective cylinders C1 to C5 via the hydraulic line L.
Fig. 4 is a view showing the configuration of the operation control valve 160.
The motion control valve 160 is configured as solenoid valves SV1 to SV4 and the like as three-position control valves.
Each of the electromagnetic valves SV1 to SV4 switches the presence or absence of the hydraulic pressure supply to each of the pressure cylinders C1 to C5 in accordance with the drive power supplied from a control device (not shown).
The solenoid valve SV1 supplies hydraulic pressure to the reverse flow prevention cylinder C1.
The solenoid valve SV2 supplies hydraulic pressure to the lift cylinder C2 and the automatic lock cylinder C3.
The solenoid valve SV3 supplies the oil pressure to the cylinder C4 moving up and down.
The solenoid valve SV4 supplies hydraulic pressure to the push cylinder C5.
Further, a safety valve or the like is provided on the oil passage that supplies the hydraulic pressure to the respective pressure cylinders from the electromagnetic valves SV1, SV2, and SV4, and when the pressure is equal to or greater than a predetermined value, the hydraulic oil is discharged to the hydraulic oil tank 110 side.
Fig. 5 is a schematic view showing the configuration of a hydraulic pump drive mechanism on the garbage collection vehicle of the embodiment.
Fig. 5(a) is a schematic side view of the garbage collection vehicle, and Fig. 5(b) is a schematic plan view.
As shown in FIG. 5, in the embodiment, the pump 120 can be selectively driven by the output of the engine 4 and driven by the electric motor 210 using the PTO mechanism 6.
The garbage collection device 1 has a motor 210, a battery 220, an inverter 230, and the like.
The motor 210 is an end portion of the pump 120 on the side of the PTO mechanism 6, and is coaxial with an input shaft of the pump 120, for example, an AC motor.
As the motor 210, for example, a synchronous motor such as an IM motor, a PM motor, or an IPM motor can be used.
The rotation shaft (output shaft) of the motor 210 is connected to the input shaft of the pump 120.
The PTO mechanism 6 or the like is connected to the end on the rotating shaft of the motor 210 on the side opposite to the pump 120 side via the power transmission shaft.
The battery 220 is, for example, a secondary battery such as a lithium ion battery, a nickel hydrogen battery, or a lead storage battery, and supplies electric power for driving the motor 210.
The battery 220 may be charged in addition to the garbage collection vehicle (waste station), for example, or may be recharged using the regenerative power generation unit during use of the vehicle.
In addition, the battery 220 may be charged by energy regeneration by the discharge cylinder driving mechanism 300. This will be explained in detail later.
The battery 220 is mounted, for example, on the lower portion (under the floor) of the garbage collection device 1 and is mounted between the tracks and the like.
The inverter 230 performs DC-AC conversion on the electric power output from the battery 220, and supplies it to the motor 210 and the motor generator 320 of the discharge cylinder driving mechanism 300, which will be described later, to drive the motor 210 and the motor generator 320, and to control the motor 210. Output.
Further, the garbage collection device 1 has a discharge cylinder driving mechanism 300 described below.
Fig. 6 is a schematic view showing the structure of the discharge cylinder driving mechanism.
Fig. 7 is a schematic view showing the operation of the garbage collection device. Fig. 7(a) shows a state in which garbage is loaded, and Fig. 7(b) shows a state in which garbage is discharged.
Fig. 8 is a view showing an operation at the time of charging and discharging of the battery by the discharge cylinder driving mechanism, wherein Fig. 8(a) shows the operation when the garbage is discharged using the electric power of the battery 220, and Fig. 8(b) shows the garbage loading. The electric motor generator 320 generates electric power and operates when the battery 220 is charged.
The discharge cylinder drive mechanism 300 supplies hydraulic pressure to the discharge cylinder C6 as a single-acting cylinder, and drives the discharge cylinder C6 at the time of garbage discharge shown in Fig. 7(b), and is shown in Fig. 7(a). When the garbage G is placed in the vehicle body 10, the discharge plate 11 is pressed back toward the vehicle front side by the compressive force (reaction force) of the garbage G, and power generation is performed to regenerate the energy.
The discharge cylinder driving mechanism 300 is configured to include a pump 310, a motor generator 320, an electromagnetic check valve 330, and the like.
The pump 310 is, for example, a gear pump or the like provided on the hydraulic line connecting the operating oil tank 110 and the discharge cylinder C6.
The discharge cylinder C6 as the single-acting cylinder is telescopically driven by flowing the hydraulic oil bidirectionally in the hydraulic line.
The pump 310 sucks the hydraulic oil from the hydraulic oil tank 110, presses it, and discharges it to the discharge cylinder C6. As shown in Fig. 7(b), the discharge cylinder C6 is driven to move the discharge plate 11 toward the rear side of the vehicle to remove the garbage G. Launched from the body 10.
Further, as shown in Fig. 7(a), the pump 310 has a function of pressing the discharge plate 11 toward the front side of the vehicle at the time of garbage loading (when the discharge cylinder C6 is contracted), and using the discharge cylinder C6. The hydraulic oil that flows backward to the side of the operating oil tank 110 is driven as a hydraulic motor.
The motor generator 320 drives the pump 310 by the electric power supplied from the inverter 230 when the discharge plate 11 pushes the garbage G (when the discharge pressure cylinder C6 is extended).
At this time, the motor generator 320 is driven by the electric power of the battery 220 as shown in Fig. 8(a).
Further, as shown in FIG. 8(b), the motor generator 320 has a function of generating electric power by rotationally driving the pump 310 when the discharge plate 11 is pressed back.
The generated electric power charges the battery 220 via the inverter 230.
At this time, the inverter 230 also functions as a charging unit.
In addition, when the discharge plate 11 is pulled in toward the vehicle front side without using the reaction force of the garbage G, the motor generator 320 may be reversed, and the pump 310 may be driven in the opposite direction to the discharge of the garbage G.
The electromagnetic check valve 330 is disposed on a line between the pump 310 and the operating oil tank 110.
When the garbage collection device 1 is normally used (at the time of collection operation), the electromagnetic check valve 330 is blocked, and the discharge cylinder C6 holds the discharge plate 11 at the current position.
Further, at the time of garbage loading, the discharge plate 11 is pressed by the compressive force (reaction force) of the garbage G pressed from the tailgate hopper 20, and if the pressure of the discharge cylinder C6 is greater than or equal to a predetermined value (for example, 20 MPa), The electromagnetic check valve 330 is opened, the discharge plate 11 is moved to the front side of the vehicle, and the discharge cylinder C6 causes the hydraulic oil to flow back toward the operating oil tank 110 side.
At this time, as shown in Fig. 8(b), the hydraulic oil rotates the pump 310 to drive the motor generator 320 to generate electric power. The generated electric power is supplied to the battery 220 via the inverter 230, and is charged.
As described above, according to the present embodiment, by using the hydraulic oil that flows back from the discharge cylinder C6 to the pump 310 when the garbage G is loaded, the pump 310 is driven as a hydraulic motor, and the motor generator 320 can be driven from the pump 310 side. Power generation.
Therefore, the main hydraulic circuit 100 can drive the loading plate 21 with a simple configuration, and a part of the energy of the compressed garbage can be regenerated to charge the battery 220, thereby achieving energy saving.
(Modification)
The present invention is not limited to the above-described embodiments, and various modifications and changes can be made without departing from the scope of the invention.
(1) In the above embodiment, the garbage collection device is, for example, a pressure type (compression plate type) device, but the present invention is not limited thereto, and may be applied to other types of garbage collection devices such as a rotary plate type.
(2) In the embodiment, the regenerative energy may be obtained from the discharge cylinder of the garbage collection device, but it is also possible to use the oil that flows countercurrent from the other hydraulic actuators to generate electricity. For example, when the tailgate hopper is lowered by its own weight, the oil that flows backward from the lift cylinder that raises the tailgate hopper can generate electricity.
(3) The present invention is also applicable to a work vehicle in which a work device other than the garbage collection device is mounted. For example, in a power loader that lifts and lowers a container mounted on a truck chassis by a hydraulic cylinder, it is also possible to use oil that flows backward from the hydraulic cylinder when the container is lowered.
Further, in a dump truck that can raise and lower a cargo box, oil generated by the oil flowing backward from the hydraulic cylinder when the cargo box is lowered may be used.
1．．．垃圾收集裝置1. . . Garbage collection device
2．．．貨車底盤2. . . Truck chassis
3．．．框架3. . . frame
5．．．變速器5. . . transmission
6．．．動力輸出(PTO)機構6. . . Power output (PTO) mechanism
10．．．車身10. . . Body
11．．．排出板11. . . Discharge plate
20．．．尾門料斗20. . . Tail door hopper
21．．．裝載板twenty one. . . Loading plate
100．．．主油壓回路100. . . Main hydraulic circuit
110．．．動作油箱110. . . Action tank
120、310．．．泵120, 310. . . Pump
130．．．儲壓器130. . . Accumulator
140．．．篩檢程式140. . . Screening program
150．．．穩壓器150. . . Stabilizer
160．．．動作控制閥160. . . Motion control valve
210．．．電動機210. . . electric motor
220．．．電池220. . . battery
230．．．逆變器230. . . Inverter
300．．．排出壓力缸驅動機構300. . . Discharge cylinder drive mechanism
320．．．電動發電機320. . . Motor generator
330．．．電磁逆止閥330. . . Electromagnetic check valve
C1、C2、C3、C4、C5、C6．．．壓力缸C1, C2, C3, C4, C5, C6. . . Pressure cylinder
G．．．垃圾G. . . Rubbish
L．．．油壓管線L. . . Oil pipeline
SV1、SV2、SV3、SV4．．．電磁閥SV1, SV2, SV3, SV4. . . The electromagnetic valve
第1圖是作為使用本發明的作業車輛的實施例的垃圾收集車的側視圖。
第2圖是實施例的垃圾收集車的後方斜視圖。
第3圖是表示實施例的垃圾收集裝置中的主油壓回路的結構的圖。
第4圖是表示實施例的垃圾收集裝置中的動作控制閥的結構的圖。
第5圖是表示實施例的垃圾收集裝置中的油壓泵驅動機構的結構的圖。
第6圖是表示實施例的垃圾收集裝置中的排出壓力缸驅動機構的結構的圖。
第7圖是表示實施例的垃圾收集裝置的動作的示意圖。
第8圖是表示實施例的垃圾收集裝置的電池充放電時的動作原理的圖。
Fig. 1 is a side view of a garbage collection vehicle as an embodiment of a work vehicle to which the present invention is applied.
Fig. 2 is a rear perspective view of the garbage collection vehicle of the embodiment.
Fig. 3 is a view showing the configuration of a main hydraulic circuit in the garbage collection device of the embodiment.
Fig. 4 is a view showing the configuration of a motion control valve in the garbage collection device of the embodiment.
Fig. 5 is a view showing the configuration of a hydraulic pump drive mechanism in the garbage collection device of the embodiment.
Fig. 6 is a view showing the configuration of a discharge cylinder driving mechanism in the garbage collection device of the embodiment.
Fig. 7 is a schematic view showing the operation of the garbage collection device of the embodiment.
Fig. 8 is a view showing the principle of operation of the garbage collection device of the embodiment at the time of charge and discharge of the battery.
11．．．排出板11. . . Discharge plate
110．．．動作油箱110. . . Action tank
220．．．電池220. . . battery
300．．．排出壓力缸驅動機構300. . . Discharge cylinder drive mechanism
310．．．泵310. . . Pump
320．．．電動發電機320. . . Motor generator
330．．．電磁逆止閥330. . . Electromagnetic check valve
C6．．．壓力缸C6. . . Pressure cylinder
Claims (3)
作業裝置，其由油壓致動器驅動；
泵，其產生使至少一部分上述油壓致動器動作的油壓；
電動發電機，其驅動上述泵；以及
電池，其向上述電動發電機供給電力，
其特徵在於，
上述泵具有由上述油壓致動器受到外力時噴出的油驅動，從而驅動上述電動發電機而使其發電的功能，
具有充電單元，其將上述電動發電機產生的電力向上述電池進行充電。A work vehicle having:
a working device driven by a hydraulic actuator;
a pump that produces an oil pressure that causes at least a portion of the hydraulic actuator to operate;
a motor generator that drives the pump; and a battery that supplies power to the motor generator
It is characterized in that
The pump has a function of driving the motor generator to generate electric power by driving the oil that is ejected when the hydraulic actuator receives an external force.
There is a charging unit that charges electric power generated by the motor generator described above to the battery.
上述油壓致動器是單動壓力缸，
上述泵由從上述單動壓力缸向上述泵側逆流的油驅動。The work vehicle according to claim 1, wherein
The above hydraulic actuator is a single-acting pressure cylinder.
The pump is driven by oil that flows back from the single-acting cylinder to the pump side.
上述作業裝置是在容器狀的車身內壓縮並裝載垃圾的垃圾收集裝置，
上述油壓致動器驅動排出板，該排出板在垃圾排出時將垃圾推出，並且在垃圾裝載時受到垃圾的壓縮力而移動。
A work vehicle according to claim 1 or 2, characterized in that
The above-mentioned working device is a garbage collecting device that compresses and loads garbage in a container-shaped vehicle body.
The hydraulic actuator drives a discharge plate that pushes out the garbage when the garbage is discharged, and moves by the compressive force of the garbage when the garbage is loaded.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011126265A JP2012250830A (en) | 2011-06-06 | 2011-06-06 | Working vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW201302574A true TW201302574A (en) | 2013-01-16 |
Family
ID=47300013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101120252A TW201302574A (en) | 2011-06-06 | 2012-06-06 | Working vehicle |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2012250830A (en) |
| CN (1) | CN102815485A (en) |
| TW (1) | TW201302574A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT525124A1 (en) * | 2021-05-31 | 2022-12-15 | Brosowitsch Dipl Ing Josef | Waste bin emptying device with hybrid drive and energy recovery |
| AT17804U1 (en) * | 2021-05-31 | 2023-03-15 | Josef Brosowitsch Ing Dipl Ing Mmst | Waste bin emptying device with hybrid drive and energy recovery |
-
2011
- 2011-06-06 JP JP2011126265A patent/JP2012250830A/en not_active Withdrawn
-
2012
- 2012-06-06 TW TW101120252A patent/TW201302574A/en unknown
- 2012-06-06 CN CN 201210185540 patent/CN102815485A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN102815485A (en) | 2012-12-12 |
| JP2012250830A (en) | 2012-12-20 |
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