經濟部智慧財產局貝工消费合作社印製 f 4-42^37 a7 _B7_____ 五、發明說明（1 ) 〔發明所屣之技術領域〕 本發明係關於一種同步控制兩台油壓引動器的油壓同 步裝置，及使用該裝置的油壓昇降裝置。 〔以往之技術〕 例如，在以兩支油壓缸各別地驅動兩台昇降裝置之形 式的汽車修配用昇降裝置中，若作用於油壓缸之負載不相 同時，則在各昇降裝置之昇降速度或昇降量上產生相違之 問題點。以往眾知一體地連結兩台昇降裝置並機械式地同 步之技術，惟依照此，有昇降裝置之設置或負載處理上有 不方便》 以往，提案一種藉由油壓控制來同步兩支油壓缸之裝 置。表示於第3圖之油壓同步裝置係在具備電動馬達及泵 之油壓單元3 1串聯地連接大徑之油壓缸3 2 A與小徑之 油壓缸3 2 B所構成。在表示於第4圖之裝置，係在兩支 油壓紅3 2A，3 2B使用供應同量壓油的分配器3 3， 而在表示於第5圖之裝置中，係使更高精度之同步缸3 4 〇 在表示於第6圖之裝置，係兩台泵35A，35B藉 由共通之電動馬達3 6被驅動。在表示於第7圖之裝置， 設置檢測兩支油壓缸3 2A，3 2B之作動量並將其相差 予以補正的伺服閥3 7。表示於第8圖之裝置，係以編碼 器38A，38B檢測兩支油壓缸32A，32B之作動 量。依據此等之電氣信號，控制單元3 9構成能控制比例 本紙張尺度適用中困國家標準（CNSJA4规格（210 X 297公« > -4- 1-----------^裝 ---I--訂-----1 ·線.H (猜先«讀背面之注意事項再填寫本頁) 經濟部智慧財產局貝工消费合作社印製 4 4 2 4 3 7 a7 ___B7_ 五、發明說明（2 > 控制閥4〇A’4〇B。 ’ 〔發明欲解決之課題〕 然而，依照表示於第3圖之裝置，必須將大徑缸 3 2 A之上室之斷面積與小徑缸3 2 B之下室之斷面積成 爲相等，有缸尺寸之組配被限制之情形。表示於第4圖之 裝置之情形，若分配器3 3之精度低時，無法得到充分之 同步精度。表示於第5圖之裝置之情形*由於在同步缸 3 4之一衝程將油壓缸3 2A，3 2 B施行一往復，因此 在油壓缸3 2A，3 2 B之尺寸或衝程時，隨著此也需將 同步缸3 4成爲大型化》 表示於第6圖之裝置之情形，由於使用兩台油壓缸 35A，35B，因此，整體裝置成爲大型，成本變高， 且同步精度也變低。表示於第7圖之裝置之情形，須使用 昂貴之伺服閥3 7，其設置場所也有被限制之狀況。表示 於第8圖之裝置之情形，檢測控制系統變複雜，且裝置成 爲昂貴之狀況*又，依照以往之油壓同步裝置，在任何情 形，由於在油壓發生源或動力源或檢測控制系統均使用電 動機器，因此，淋到雨或水之場所有漏電或短路之虞，在 加油站或塗裝噴塗排氣機等之發生可燃性氣體的環境下， .特別之防止引火對策等成爲必要· 本發明之課題係在於提供一種以小型且價廉之構成高 精度地同步控制兩台油壓引動器的油壓同步裝置，及在淋 雨水之場所或發生可燃性氣體之環境下也可使用的油壓昇 本紙張尺度適用中困8家標準（CNS)A4规格<210 X 297公;i ) -5 - (請先閱讀背面之注項再填寫本頁) r:-裝 訂---------線. ^ 442437 五、發明說明（3 ) 降裝置。 ’ (請先閲讀背面之注意事項再填寫本頁) 〔解決課題所用之手段〕 爲了解決上述課題，本發明之油壓同步裝置，其特徵 爲：具備共通於兩台油壓引動器之一台油壓泵，在油壓栗 設置兩個油壓室與至少一個活塞室，將活塞室經由空氣壓 力迴路連接於壓縮空氣供應源，並將兩個油壓室經由各別 之油壓迴路連接於各油壓引動器，在活塞室收容藉由壓縮 空氣施以往復移動之活塞，而在活塞設置隨著其往復移動 在兩個油壓室交互地進退之兩支桿所構成（申請專利範圍 第1項）* 又，在本發明之油壓同步裝置中，在上述空氣壓力迴 路設置切換活塞之移動方向的方向切換閥。及在活塞之衝 程端將方向切換閥施以動作的極限閥（申請專利範圍第2 項）。在上述油壓電路，設置切換油壓引動器之作動方向 的切換閥，及設定油壓引動器之保險壓的保險閥（申請專 利範圍第3項）》 經濟部智慧財產局負工消f合作社印製 本發明之油壓昇降裝置，其特徵爲：具備兩台之昇降 機，及個別地驅動各昇降機之兩支複動型油壓缸，及共通 於各油壓缸的一台油壓泵，在油壓泵設置兩個油壓室與至 少一個活塞室，將活塞室經由空氣壓力迴路連接於壓縮空 氣供應源，並將兩個油壓室經由各別之油壓迴路連接於各 油壓缸，在活塞室收容藉由壓縮空氣施以往復移動之活塞 '而在活塞設置隨著其往復移動在兩個油壓室交互地進退 -6- 本紙張尺度適用中画國家標準（CNS)A4規格（210 * 297公) A7 f 442437 B7__ 五、發明說明（4 ) 之兩支桿設置切換活塞之移動方向的方向切換閥.。及在活 塞之衝程端將方向切換閥施以動作的極限閥，在上述油壓 電路，設匱切換油壓缸之作動方向的切換閥，及設定油壓 '缸之保險壓的保險閥所構成（申請專利範圍第4項）。 〔發明之實施形態〕 以下，依據圖式說明本發明之實施形態。第1圖係表 示油壓同步裝置之一實施形態者，圖中，粗線係表示油壓 迴路，細線係表示空氣壓力迴路。第2圖係表示裝備第1 圖之油壓同步裝置之汽車修配用之油壓昇降裝置者|與第 1圖相同之記號係表示相同構件。 如第1圖所示•該實施形態之油壓同步裝置1係同步 控制作爲油壓引動器之相同規格的兩支複動型油壓缸2 A ，2B者，具備共通於各缸2A，2B之一台油壓泵3。 在油壓泵3設置兩個油壓室4A，4B與一個活塞室5， 油壓室4A係連接於油壓缸2A與油槽6，油壓室4B係 連接於油壓缸2 A與油槽6，而活塞室5係連接於作爲空 氣壓發生源之空氣壓縮機7。 在活塞室5收容活塞8，在該活塞8設置進退在油壓 室4A，4B內之相同斷面積之兩支桿9A，9B。在油 壓泵3與空氣壓縮機7之間的空氣壓力迴路，配設以手動 操作來開閉該迴路的手動開閉閥1 0，及切換活塞8之移 動方向的方向切換閥11 ，及在活塞8之衝程端將方向切 換閥1 1予以切換動作的極限閥1 2A，1 2B，在極限 本紙張尺度適用中國困家標準（CNS)A4規格（210 X 297公釐） {請先閱讀背面之注意事項再填窝本頁) 1丨—訂_!-線 經濟部智慧財產局員工消费合作社印製 A7 442437 ——___B7_____ 五、發明說明（5 ) 閥1 2A，1 2 B與活塞8之間設置連動構件1 3A ’ 1 3 B。 在該空氣壓力迴路中，當手動開閉閥1 0被開放時-‘來自空氣壓縮機7之壓縮空氣被導至方向切換閥11與極 限閥1 2A，1 2B。而通過方向切換閥1 1之壓縮空氣 係由活塞8進入在側活塞室5，將活塞8及桿9 A，9B 朝右方移動。當活塞8達到右端時，連動構件1 3 B打開 極限閥1 2 B，使通過極限閥1 2 B之壓縮空氣來切換方 向切換閥1 1。 之後，通過方向切換閥1 1之壓縮空氣，這一次由活 塞8進入右側之活塞室5，將活塞8及桿9 A，9B朝左 方移動，當活塞8達到左端時，連動構件1 3 A打開極限 閥1 2A，使通過極限閥1 2A之壓縮空氣來切換方向切 換閥1 1。因此，依照該油壓泵3，不必使用電動馬達， 即可藉由壓縮空氣來往復驅動活塞8。 另一方面，在油壓泵3與油壓缸2 A，2 B之間的油 壓迴路，配設止回閥15A，15B，及以手動切換油壓 缸2A，2B之作動方向的手動切換閥16A，16B， 及設定油壓缸2A，2B之保險壓的保險閥1 7A， 1 7 B。又，在油槽6與油壓泵3之間的油壓迴路，配設 過濾器18A，18B與止回閥19A，19B及保險閥 20A，20B。又，手動切換閥16A，16B係機械 式地連結成利用與手動開閉閥1 0共通之一支操作桿2 1 同時地被切換》 本紙張尺度適用中國國家標準（CNS>A4規格（210 X 297公釐） ----------.---^ 裝 (請先閱讀背面之注意事項再填寫本頁) 訂---------線Printed by the Shelley Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs f 4-42 ^ 37 a7 _B7_____ V. Description of the Invention (1) [Technical Field of the Invention] The present invention relates to a method for synchronously controlling the oil pressure of two hydraulic actuators. Synchronization device, and hydraulic lifting device using the device. [Conventional Technology] For example, in an automobile repairing and lifting device in the form of two hydraulic cylinders driving two lifting devices separately, if the load acting on the hydraulic cylinders is different, There are contradictory problems in the lifting speed or lifting amount. In the past, the technology of integrally connecting two lifting devices and mechanically synchronizing them is known, but according to this, there is inconvenience in the setting or lifting of the lifting device. In the past, a method of synchronizing two oil pressures through oil pressure control was proposed. Cylinder device. The hydraulic synchronizing device shown in FIG. 3 is constituted by a hydraulic unit 3 1 including an electric motor and a pump, and a large-diameter hydraulic cylinder 3 2 A and a small-diameter hydraulic cylinder 3 2 B are connected in series. In the device shown in FIG. 4, two oil pressure reds 3 2A and 3 2B use a distributor 3 3 that supplies the same amount of pressure oil. In the device shown in FIG. 5, the device with higher accuracy is used. The synchronizing cylinder 3 4 〇 In the device shown in FIG. 6, two pumps 35A and 35B are driven by a common electric motor 36. The device shown in Fig. 7 is provided with a servo valve 37 for detecting the momentum of two hydraulic cylinders 3 2A and 3 2B and correcting the difference between them. The device shown in Fig. 8 uses encoders 38A and 38B to detect the momentum of two hydraulic cylinders 32A and 32B. Based on these electrical signals, the control unit 39 can control the proportion of the paper size applicable to the national standard (CNSJA4 specification (210 X 297) «> -4- 1 ----------- ^ Pack --- I--order ----- 1 · line.H (guess «read the precautions on the back before filling out this page) Printed by the Shelley Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 4 4 2 4 3 7 a7 ___B7_ V. Description of the invention (2 > Control valve 4〇A'4〇B. '[Problem to be solved by the invention] However, according to the device shown in FIG. 3, the large-diameter cylinder 3 2 A must be placed above the chamber. The cross-sectional area is equal to the cross-sectional area of the chamber below the small-diameter cylinder 3 2 B, and there is a case where the combination of the cylinder size is limited. As shown in the case of the device in Fig. 4, if the accuracy of the distributor 33 is low, it cannot be Full synchronization accuracy is obtained. The situation of the device shown in Figure 5 * Because the hydraulic cylinders 3 2A, 3 2 B are reciprocated in one stroke of the synchronous cylinder 3 4, the hydraulic cylinders 3 2A, 3 2 B For the size or stroke of the cylinder, it is necessary to increase the size of the synchronous cylinder 34. As shown in the device of Fig. 6, two hydraulic cylinders 35A and 35B are used. The device becomes large, the cost becomes higher, and the synchronization accuracy becomes lower. In the case of the device shown in FIG. 7, an expensive servo valve 37 must be used, and the installation place is also limited. The device shown in FIG. 8 In this case, the detection and control system becomes complicated, and the device becomes expensive * In addition, according to the conventional oil pressure synchronization device, in any case, the electric machine is used in the oil pressure generation source or power source or the detection and control system. In the case of rain or water, there is a risk of leakage or short circuit. In the environment of flammable gas such as gas stations or paint spray exhausts, special measures to prevent ignition are necessary. The problem of the present invention is to Provide a small and inexpensive oil pressure synchronization device that controls two hydraulic actuators with high accuracy and synchronization, and the oil pressure that can be used in places exposed to rain or an environment where flammable gas is generated will increase the paper size. Applicable to 8 standard (CNS) A4 specifications < 210 X 297 male; i) -5-(Please read the note on the back before filling this page) r: -binding --------- line ^ 442437 V. Invention (3) Lowering device. ((Please read the precautions on the back before filling in this page) [Methods used to solve the problem] In order to solve the above problem, the hydraulic synchronization device of the present invention is characterized by having two units in common. One hydraulic pump, one of the hydraulic actuators, sets two hydraulic chambers and at least one piston chamber in the hydraulic pump, connects the piston chamber to a compressed air supply source via an air pressure circuit, and connects the two hydraulic chambers via each Other hydraulic circuits are connected to the hydraulic actuators. The piston chamber accommodates a piston that is reciprocated by compressed air, and the piston is provided with two rods that alternately advance and retreat in the two hydraulic chambers as it reciprocates. Structure (No. 1 in the scope of patent application) * In the oil pressure synchronizing device of the present invention, a direction switching valve that switches the direction of movement of the piston is provided in the air pressure circuit. And the limit valve that applies the direction switching valve at the stroke end of the piston (No. 2 in the scope of patent application). In the above-mentioned hydraulic circuit, a switching valve for switching the operating direction of the hydraulic actuator and a safety valve for setting the insurance pressure of the hydraulic actuator (item 3 in the scope of patent application) are provided. The hydraulic lifting device of the present invention is printed with two lifts, two double-acting hydraulic cylinders that individually drive each lift, and a hydraulic pump that is common to each hydraulic cylinder. The hydraulic pump is provided with two hydraulic chambers and at least one piston chamber. The piston chamber is connected to a compressed air supply source via an air pressure circuit, and the two hydraulic chambers are connected to the hydraulic cylinders through respective hydraulic circuits. In the piston chamber, the piston is reciprocated by compressed air, and the piston is set to move forward and backward in the two oil pressure chambers with its reciprocating movement. -6- This paper applies the China National Standard (CNS) A4 specification. (210 * 297 male) A7 f 442437 B7__ 5. Description of the invention (4) The two levers are provided with a direction switching valve that switches the direction of movement of the piston. And a limit valve that applies a direction switching valve at the stroke end of the piston, and the above hydraulic circuit is provided with a switching valve that switches the operating direction of the hydraulic cylinder, and a safety valve that sets the safety pressure of the hydraulic cylinder (No. 4 in the scope of patent application). [Embodiments of the Invention] Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 shows an embodiment of an oil pressure synchronizing device. In the figure, a thick line indicates an oil pressure circuit, and a thin line indicates an air pressure circuit. Fig. 2 shows a hydraulic lifting device for repairing an automobile equipped with the hydraulic synchronizing device of Fig. 1. The same symbols as in Fig. 1 indicate the same components. As shown in FIG. 1 • The hydraulic synchronizing device 1 of this embodiment synchronously controls two double-acting hydraulic cylinders 2 A and 2B of the same specifications as hydraulic actuators, and includes two cylinders 2A and 2B in common. One of the hydraulic pumps 3. The hydraulic pump 3 is provided with two hydraulic chambers 4A, 4B and a piston chamber 5. The hydraulic chamber 4A is connected to the hydraulic cylinder 2A and the oil tank 6, and the hydraulic chamber 4B is connected to the hydraulic cylinder 2A and the oil tank 6. The piston chamber 5 is connected to an air compressor 7 as a source of air pressure. A piston 8 is housed in the piston chamber 5, and two rods 9A, 9B of the same cross-sectional area that are advanced and retracted in the hydraulic chambers 4A, 4B are provided in the piston 8. The air pressure circuit between the hydraulic pump 3 and the air compressor 7 is provided with a manual opening and closing valve 10 for manual operation to open and close the circuit, and a direction switching valve 11 for switching the movement direction of the piston 8 and a piston 8 At the stroke end, the directional switching valve 1 1 is used to switch the limit valve 1 2A, 1 2B. At the limit, the paper size applies the Chinese Standard (CNS) A4 (210 X 297 mm) {Please read the note on the back first Matters are refilled on this page) 1 丨 —Order _!-Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 442437 ——___ B7_____ V. Description of the invention (5) Between the valve 1 2A, 1 2 B and the piston 8 Linking member 1 3A '1 3 B. In this air pressure circuit, when the manual on-off valve 10 is opened-'compressed air from the air compressor 7 is guided to the directional switching valve 11 and the limit valves 12A, 12B. The compressed air passing through the direction switching valve 11 enters the side piston chamber 5 from the piston 8 and moves the piston 8 and the rods 9 A, 9B to the right. When the piston 8 reaches the right end, the interlocking member 1 3 B opens the limit valve 1 2 B to switch the direction switching valve 11 by the compressed air passing through the limit valve 1 2 B. Then, through the compressed air of the direction switching valve 11 this time, the piston 8 enters the right piston chamber 5 and moves the piston 8 and the rods 9 A and 9B to the left. When the piston 8 reaches the left end, the linkage member 1 3 A Open the limit valve 12A, and switch the direction switching valve 11 by the compressed air passing through the limit valve 12A. Therefore, according to the hydraulic pump 3, the piston 8 can be reciprocated by compressed air without using an electric motor. On the other hand, the hydraulic circuit between the hydraulic pump 3 and the hydraulic cylinders 2 A and 2 B is provided with check valves 15A and 15B, and the manual switching of the operating directions of the hydraulic cylinders 2A and 2B is manually performed. Valves 16A, 16B, and safety valves 17A, 17B setting the safety pressure of the hydraulic cylinders 2A, 2B. In the hydraulic circuit between the oil tank 6 and the hydraulic pump 3, filters 18A, 18B, check valves 19A, 19B, and safety valves 20A, 20B are provided. In addition, the manual switching valves 16A and 16B are mechanically connected to be switched at the same time by using an operating lever 2 1 which is common to the manual opening and closing valve 1 0. This paper size applies to the Chinese national standard (CNS > A4 specification (210 X 297 Mm) ----------.--- ^ Install (Please read the precautions on the back before filling this page) Order --------- line
T 經濟部智慧財產局貝工消费合作社印製 -8 - 442437 A7 B7 ___ 五、發明說明（6 ) 在該油壓迴路中，當活塞8朝右方移動時，藉桿9 B 之前進使油壓室4 B之壓油經止回閥1 5 B及手動切換閥 1 6 B供應於油壓缸2 B，同時藉桿9 A之後退使油槽6 之壓油經過濾器1 8 A及止回閥1 9 A被吸進油壓室4 A 。相反地，當活塞8朝左方移動時，則藉桿9 A之前進使 油壓室4A之壓油供應於油壓缸2A，藉桿9 B之後退使 油槽6之壓油被吸進油壓室4 B。 當手動切換閥1 6A ’ 1 6B被切換成表示於第1圖 之位置時來自油壓泵3之吐出油流入油壓缸2A , 2B之 下室，使缸2A ’ 2 B伸長動作’上室之壓油係在保險閥 1 7A，1 7B被壓力控制之後回流至油槽6。當手動切 換閥1 6A，1 6 B被切換成相反方向時，油壓泵3之吐 出油流進油壓缸2A，2B之上室，使缸2A，2B收縮 動作|下室之壓油係在保險閥1 7A，1 7 B被壓力控制 之後回流至油槽6。 油壓泵3之吸入油量與吐出油量係同等，以各該桿 9 A，9 B之斷面積與活塞8之衝程之相乘積求得。油壓 泵泵3之倍壓係以（活塞之斷面積/桿之斷面積）X空氣 壓力X效率所表示《又，發生於油壓缸2A，2B之油壓 係藉由負載所決定，惟比依該負載之油壓更高油壓設定於 .保險閥1 7 A，1 7 B » 如此，依照本實施形態之油壓同步裝置，隨著活塞8 之往復移動，同等量之壓油從兩個油壓室4A，4 B經各 別之油壓迴路交互地供應於兩支油壓缸2A，2B。因此 (請先閱讀背面之注意事項再填寫本頁) 裝T Printed by the Shelley Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs-8-442437 A7 B7 ___ V. Description of the invention (6) In this hydraulic circuit, when the piston 8 moves to the right, the lever 9 B is used to advance the oil The pressure oil in pressure chamber 4 B is supplied to hydraulic cylinder 2 B through check valve 1 5 B and manual switching valve 1 6 B. At the same time, the pressure oil in oil tank 6 is passed through the filter 1 8 A and check through the lever 9 A. The valve 19 A is sucked into the oil pressure chamber 4 A. Conversely, when the piston 8 moves to the left, the pressure oil in the oil pressure chamber 4A is supplied to the hydraulic cylinder 2A by the rod 9 A forward, and the pressure oil in the oil tank 6 is sucked into the oil by the rod 9 B and then retracted. Pressure chamber 4 B. When the manual switching valve 1 6A '1 6B is switched to the position shown in FIG. 1, the discharged oil from the hydraulic pump 3 flows into the lower chambers of the hydraulic cylinders 2A and 2B, so that the cylinder 2A' 2 B extends and moves' the upper chamber. The pressure oil is returned to the oil tank 6 after the safety valves 17A, 17B are pressure-controlled. When the manual switching valves 16A and 16B are switched to opposite directions, the oil discharged from the hydraulic pump 3 flows into the upper chambers of the hydraulic cylinders 2A and 2B, so that the cylinders 2A and 2B contract. The hydraulic system of the lower chamber After the safety valves 17A, 17B are pressure-controlled, they return to the oil tank 6. The amount of sucked oil and the amount of oil discharged from the hydraulic pump 3 are the same and are obtained by multiplying the cross-sectional area of each of the rods 9 A, 9 B and the stroke of the piston 8. The double pressure of the hydraulic pump pump 3 is expressed by (the cross-sectional area of the piston / the cross-sectional area of the rod) X the air pressure X the efficiency, and the hydraulic pressure that occurs in the hydraulic cylinders 2A and 2B is determined by the load, but The oil pressure is set higher than the oil pressure according to the load. Safety valve 1 7 A, 1 7 B »In this way, according to the oil pressure synchronization device of this embodiment, as the piston 8 moves back and forth, the same amount of oil pressure from The two oil pressure chambers 4A, 4 B are alternately supplied to the two oil pressure cylinders 2A, 2B via respective oil pressure circuits. Therefore (Please read the notes on the back before filling this page)
• n I !!訂_!-線 經濟部智慧財產局員工消费合作社印製 本紙張尺度適用f國國家橾準（CNS)A4規格（210 * 297公« ) -9- 經濟部暫慧財產局員工消费合作社印製 4 4 2 4 3 7 A7 ____B7__ 五、發明說明（7 > ，即在負載上有相差時，也可用同等之伸縮量’以優異之 精度同步控制兩支油壓缸2A，2 B |又，即使油壓缸 2 A，2 B之尺寸或衝程較大時，也具有可使用較小容量 之油壓泵3之優點。此外，由於在油壓泵3之動力源使用 空氣壓縮機7，因此，與電動型油壓單元相比較，可將整 體裝置以小型廉價地構成，同時控制來自空氣壓縮機7之 空氣量。也具有容易地調整油壓缸2A，2 B之伸縮速度 的優點。 油壓缸2 A，2 B係嚴密地交互間歇地被驅動，惟由 於每一單位時間之供油量相同，因此若將活塞8之一衝程 分量之吐出量變小，並將速度設定較快時|即可順暢地動 作各缸2A，2B，可無障礙地運轉油壓昇降裝置。又， 在上述實施形態中使用相同規格之油壓缸2 A，2B |惟 將油壓泵3之兩支桿9A，9 B之直徑成爲不相同，也可 容易地適用於缸徑或衝程不同之兩支油壓缸之同步控制。 如第2圖所示，該實施形態之汽車修配用油壓昇降裝 置係具備獨立之兩台X連桿式昇降機23A，23B，將 此等以沿該油壓缸2 A，2 B構成能昇降驅動。油壓缸 2A，2B係經由油壓軟管24A，24B連接於油壓同 步裝置1 ，而該裝置1係經由空氣軟管25連接於遠離作 .業現場之空氣壓縮機7。油壓同步裝置1係如上所述，由 於在油壓泵3之動力源使用空氣壓縮機7。未具備檢測控 制用之電氣機器，因此，在淋雨水之場所或發生可燃性氣 體之環境下也可設置。 <請先閲讀背面之注意事項再填寫本頁) <裝！1訂·! 線， 本紙張尺度適用中0國家樣準（CNS)A4規格（210 * 297公釐） -10- 經濟部智慧財產局貝工消费合作社印製 J 4 42 43 7 a? B7 五、發明說明（8 ) 又，本發明之油壓同步裝置係並不被僅限‘定於複動型 油壓缸者，也可適用於單動型油壓缸或油壓馬達等各種油 壓引動器。又，本發明之油壓昇降裝置係並不被限定於X 連桿式昇降裝置，也可以爲撞鎚式昇降裝置，也可適用於 汽車修配用以外之各種用途的昇降裝置。其他，在不超越 本發明之趣旨之範圍內適當地變更各部之形狀及構成也可 加以實施。 〔發明之效果〕 如上所詳述，依照本發明之油壓同步裝置，具有以小 型且廉價之構成可高精度地同步控制兩台油壓引動器。 又，依照本發明之油壓昇降裝置，具有在淋雨水之場 所或發生可燃性氣體之環境下也可使用之效果。 [圖式之簡單說明〕 第1圖係表示依本發明之油壓同步裝置之一實施形態 的迴路圖β * 第2圖係表示依本發明之油壓昇降裝置之一實施形態 的斜視圖。 第3圖係表示以往之油壓同步裝置的迴路圖。 第4圖係表示以往之油壓同步裝置的迴路圖》 第5圖係表示以往之油壓同步裝置的迴路圖。 第6圖係表示以往之油壓同步裝置的迴路圖。 第7圖係表示以往之油壓同步裝置的迴路圖。 本紙張尺度適用中國a家標準（CNS)A4现格（2〗0 X 297公釐） (請先閲讀背面之注意事項再填寫本頁) ^裝！— I*—I 訂 ί — -線 442 437 a? _B7_ 五、發明說明（9 ) 第8圖係表示以往之油壓同步裝置的迴路圖。 壓 油 3 缸 壓 油 B 2 A 2 置 裝 步 /,同 明壓 說油 之 ·. 號1 記 B 9 4 ， ’ 塞 A 活 4 : Ϊ 8 泵’ 5 桿 室 B 壓 9 機 縮 壓， 氣閥 空換 : 切 7 向 ’ 方 室： 塞 活• n I !! Order _!-Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. The paper size is applicable to the national standard (CNS) A4 (210 * 297) «-9- Temporary Property Bureau of the Ministry of Economic Affairs Printed by the employee consumer cooperative 4 4 2 4 3 7 A7 ____B7__ V. Description of the invention (7 > That is, when there is a difference in load, the same amount of expansion and contraction can be used to control the two hydraulic cylinders 2A simultaneously with excellent accuracy, 2 B | Also, even when the size or stroke of the hydraulic cylinders 2 A and 2 B is large, it has the advantage of using a hydraulic pump 3 with a smaller capacity. In addition, since air is used as the power source of the hydraulic pump 3 Compressor 7, therefore, compared with an electric hydraulic unit, the entire device can be constructed in a small size and inexpensively, while controlling the amount of air from the air compressor 7. It also has the ability to easily adjust the expansion and contraction of the hydraulic cylinders 2A, 2B Advantages of speed. The hydraulic cylinders 2 A and 2 B are closely and intermittently driven, but because the fuel supply amount per unit time is the same, if the amount of one stroke component of the piston 8 is reduced, the speed will be reduced. When set faster | You can smoothly operate each cylinder 2A, 2B, can The hydraulic lifting device is operated in an obstacle. In the above embodiment, hydraulic cylinders 2 A, 2B of the same specifications are used. However, it is also easy to make the diameters of the two rods 9A, 9 B of the hydraulic pump 3 different. It is suitable for the synchronous control of two hydraulic cylinders with different cylinder bores or strokes. As shown in Figure 2, the hydraulic lifting device for automobile repair in this embodiment has two independent X-link elevators 23A, 23B, These can be driven up and down along the hydraulic cylinders 2 A, 2 B. The hydraulic cylinders 2A, 2B are connected to the hydraulic synchronizing device 1 via hydraulic hoses 24A, 24B, and the device 1 is air-soft The pipe 25 is connected to the air compressor 7 remote from the working site. The oil pressure synchronizing device 1 is as described above, because the air compressor 7 is used as the power source of the oil pressure pump 3. There is no electrical equipment for detection and control, so , Can also be set in places exposed to rain or in the environment where flammable gas is generated. ≪ Please read the precautions on the back before filling this page) < Install! 1 order · line, this paper size applies to 0 Chinese National Standard (CNS) A4 specifications (210 * 297 mm) -10- Printed by the Shellfish Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs J 4 42 43 7 a? B7 5 Explanation of the invention (8) In addition, the hydraulic synchronizing device of the present invention is not limited to those who are set to double-acting hydraulic cylinders, but can also be applied to various hydraulic pressures such as single-acting hydraulic cylinders or hydraulic motors. Actuator. In addition, the hydraulic lifting device of the present invention is not limited to the X-link type lifting device, but may be a ram-type lifting device, and may also be applied to lifting devices for various uses other than automobile repairing. In addition, the shape and configuration of each part may be appropriately changed without departing from the scope of the present invention. [Effects of the Invention] As described in detail above, the hydraulic synchronizing device according to the present invention has a small and inexpensive structure and can simultaneously control two hydraulic actuators with high accuracy. Furthermore, the hydraulic pressure lifting device according to the present invention has the effect that it can be used even in a place exposed to rain or an environment where flammable gas is generated. [Brief description of the drawings] Fig. 1 is a circuit diagram β showing an embodiment of a hydraulic synchronizing device according to the present invention. * Fig. 2 is a perspective view showing an embodiment of a hydraulic lifting device according to the present invention. Fig. 3 is a circuit diagram showing a conventional hydraulic synchronizing device. Fig. 4 is a circuit diagram showing a conventional hydraulic synchronizing device. Fig. 5 is a circuit diagram showing a conventional hydraulic synchronizing device. Fig. 6 is a circuit diagram showing a conventional hydraulic synchronizing device. Fig. 7 is a circuit diagram showing a conventional hydraulic synchronizing device. This paper size is applicable to China Standard A (CNS) A4 (2〗 0 X 297 mm) (Please read the precautions on the back before filling this page) ^ Packing! — I * —I order ί —-line 442 437 a? _B7_ V. Description of the invention (9) Figure 8 is a circuit diagram showing a conventional hydraulic synchronization device. Oil pressure 3 cylinder pressure oil B 2 A 2 installation step /, the same as the pressure said oil .. No. 1 Note B 9 4, 'plug A live 4: Ϊ 8 pump' 5 rod chamber B pressure 9 machine pressure reduction, Air valve air change: cut 7-way 'square chamber: plugged live
r—I ，閥 閥險 限保 極： : B B 7 2 1 τ—< ， ，A A 7 2 1 1 , A 6 A 3 2 閥。 換機 切降 動昇 手 ： : B B 3 6 2 (請先閱讀背面之注意事項再填寫本頁) 裝 訂· 經濟部智慧財產局負工消f合作社印製 -12- 本紙張尺度適用中國國家標準（CNS>A4规格（2】0 X 297公釐）r—I ， Valve Risk limit :： B B 7 2 1 τ— <, A A 7 2 1 1, A 6 A 3 2 valve. Changing machine, lifting and moving hands:: BB 3 6 2 (Please read the notes on the back before filling out this page) Binding · Printed by the Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -12- This paper size applies to Chinese national standards (CNS > A4 specification (2) 0 X 297 mm)