4 1 9 6 A7 B7 五、發明說明（1 ) 發明所屬技術領域 (請先閱讀背面之注意事項再填窝本頁) 本發明係有關一種於汽車維修用昇降機中用來將左右 車載台昇降於相同等高度之油壓同步裝置。 習知技術 爲了以個別油壓缸將左右車載台昇降，保持於相同高 度，須控制二油壓缸之壓給油控制於同量。就具備此種功 能之油壓同步裝置而言，過去已知有第1 1及第1 2圖所 示技術。第1 2圖所示裝置於油壓組件7 1與二油壓缸 72A、 72B之間設有同步缸筒73。第12圖所示裝 置配置成分別以編碼器7 4 A、7 4 B檢測二油壓缸7 2 A、7 2 B之作動量，電控制電路7 5根據此等信號控制 比例控制閥7 6 A、7 6 B。 發明所欲解決之問題 惟，爲了使油壓缸72A、 72B往復一次行進同步 缸筒7 3之一行程。第1 1圖所示裝置在油壓缸7 2 A、 經濟部智慧財產局員工消費合作社印制衣 7 2 B之尺寸或行程大情形下，會對應地使同步缸筒7 3 大型化，亦要求加工精度，成本增高。又，在第1 2圖所 示裝置情形下，由於以編碼器7 4、7 4 B電檢測油壓缸 72A、 72B之作動量，故不適合設在加油站、油漆工 廠等易於產生易燃性氣體之場所之昇降機。 因此，本發明旨在提供一種機械式構成檢測機構，可 藉簡單，小型且低廉之裝置高精度同步控制二油壓缸之汽 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-4 - 4 57196 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（2 ) 車維修用昇降機之油壓同步裝置。 用以解決問題之手段 爲解決上述問題，本發明油壓同步裝置係於自油壓組 件將油壓壓給油供至二油壓缸，以各油壓缸分別昇降車載 台之汽車維修用昇降機中特徵在於由隨著左右車載台之'昇 降而移動之索條構件，依據索條構件之張力變化而移動之 移動體’與移動體嵌合而檢測出左右車載台之高低差之檢 測器，藉由選自空氣檢測器之空氣作動之引動器，以及根 據引動器之輸出將二油壓缸之壓給油控制於同量之流量控 制閥構成，引動器及流量控制閥收納於油壓組件中（申請 專利範圍第1項）。 進一步，本發明油壓同步裝置特徵在於，爲了於異常 發生時馬上停止昇降機，具備前述移動體之移動量超過容 許値時作動之空氣限制器，以及回應空氣限制器之動作而 停止油壓缸之空氣限制器，壓力開關收納於油壓組件中（ 申請專利範圍第2項）。 根據本發明之較佳實施形態，於前述流量控制閥設有 與引動器聯動之柱塞。藉柱塞調整開度之節流閥，以及啓 閉節流閥與油壓缸間之油壓管路之電磁閥（申請專利範圍 第3、4項）。 又’經由個別X鏈式伸縮機構支持前述車載台於昇降 機底座’於各伸縮機構之腳部設有與車載台聯動而前後運 動之滚子軸’於昇降機底座周圔張設索條構件，聯結滚子 (請先聞讀背面之注意事項再填寫本頁) ry 訂·· 線· 本紙張尺度適用尹國國家標準（CNS)A4規格（210 X 297公釐〉_ 5 - 457196 A7 B7 五、發明說明（3 ) (諝先閱讀背面之注意事項再填寫本頁) 軸於索條構件之二部位（申請專利範圍第5項）。根據使 用X鏈式伸縮機構之昇降機，由於較請滾子軸之移動量， 車載台之昇降量更大，故藉由索條構件聯結於滾子軸，可 用小型機構確實檢測車載台之高低差。 且，固然亦可使用鋼絲，皮帶作爲索條構件，惟就獲 得高檢測精度一點而言，以使用鏈條較佳（申請專利範圍 第6、 7項）。又，可使用依據鏈條之張力變化轉動之構 件或滑動之構件來作爲移動體。 發明之實施形態 以下根據圖式說明本發明之實施形態。如第1圖所示 ，於此實施形態之汽車維修用昇降機中，左右車載台1 A 、：L B經由個別X鏈式伸縮機構2 A、2 B支持於昇降機 底座3，藉個別油壓缸4 A、4 B昇降。於左側伸縮機構 2 A之腳部設有與車載台1 A聯動而前後運動之滾子軸 5 A，於右側之伸縮機構2 B之腳部設有與車載台1 B聯 動而前後運動之滾子軸5Β。並且’於二油壓缸4Α、 4 Β設置用來供給壓給油之油壓組件6。 經濟部智慧財產局員工消費合作社印製 如第2圖所示，於昇降機底座3周圍’作爲索條構件 之鏈條7藉複數鏈輪8張設成3形無端狀。鏈條7左側之 一部份經由接頭9 Α聯結於滾子軸5 A ’右側之一部份經 由接頭9 B聯結於滾子軸5 B °於鏈條7右側部份設有交 叉部7 a，張力調節具1 〇安裝於中央部’隨著左右車載 台1 A、1 B之昇降鏈條7正逆旋轉。又’於鏈條7之左 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公愛）-6 - 457196 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（4 ) 側部份中’作爲移動體之轉動板1 4藉中央部之軸1 5可 錢動支持於昇降機底座3上。 如第3圖所示’於轉動板1 4，前後一對活動鏈輪 16、 17安裝在以軸15爲中心之圓周上，於昇降機底 座3 ’分別於前側之活動鏈輪1 6之前方及後方安裝一個 固定鏈輪1 8，並分別於後側活動鏈輪1 7之前方及後方 安裝二個固定鏈輪1 9。又，前後一對空氣檢測器1 1 A 、1 1 B固定於昇降機底座3，與轉動板1 4前端緣嵌合 .之柱塞1 1 a設在空氣檢測器1 1 A上，與轉動板1 4後 端緣嵌合之柱塞1 1 b設在空氣檢測器1 1 B上。並且， .鍵條7捲繞在各鏈輪16、17、18、19上，於左右 車載台ΙΑ、 1B發生高低差時，轉動板14藉鏈條7之 相對部之間的張力差轉動，空氣檢測器1 1 A或1 1 B檢 測左右車載台1 A、1 B之高低差。 如第4圖所示，於油壓組件6設置油壓泵3 9、槽 4 0 (參照第7圖）等標準油壓機器，同時收納作爲引動 器之氣缸1 2，以及依據氣缸1 2之輸出將二油壓缸4A 、4 B之壓給油控制於同量之流量控制閥1 3 °氣缸1 2 經由配管20A、20B及溢流閥21A、21B (參照 第5圖）連接於空氣檢測器11A，11B ’活塞桿12 a藉由送回任一空氣檢測器11A或11B之空氣向右或 向左驅動。 臂部2 2搖動自如支持於流量控制閥1 3前面’其藉 活塞桿1 2 a經由槓桿2 3及連桿2 4驅動。葉片板2 5 • - r. K 1· n n n I ^[» · (請先閱讀背面之注音¥項再填寫本頁) 幻· --線- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-7- 457196 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（5 ) 固定於臂部2 2，於其左翼部及右翼部分別安裝上下各二 支之螺栓26A、 26D及26B、 26C。並且，隨著 臂部2 2之搖動，葉片板2 5之各螺栓2 6A〜2 6 D產 生對應於左右車載台11A、 11B之高低差。且於槓桿 2 3設有用來使活塞桿1 2 a回復至中立位置之彈簧3 0 〇 ' 如第6及7圖所示，於流量控制閥1 3前向突設四支 柱塞2 7A〜2 7D，柱塞2 7A藉左右螺栓2 6A推動 ，柱塞2 7D藉左下螺栓2 6推動。柱塞2 7B藉右上螺 栓2 5 B推動，柱塞2 7 C藉左下螺栓2 5 C推動。四個 節流閥2 8 A〜2 8 D裝入閥組件1 3內部，節流閥2 8 A以藉由柱塞調整之開度增減供至左側油壓缸4 A之供給 油量，節流閥2 8 C以藉由柱塞2 7 C調整之開度增減供 至左側油壓缸4 A之排出油量，節流閥2 8 B以藉由柱塞 2 7 B調整之開度增減供至右側油壓缸4 B之供給油量’ 節流閥2 8 D以藉由柱塞2 7 D調整之開度增減右側油壓 缸4 B之排出油量。 又，於流量控制閥1 3後側安裝四個電磁閥2 9 A〜 2 9 D，電磁閥2 9 A啓閉節流閥2 8 A與左側油壓缸4 A之間的油壓管路，電磁閥2 9 C啓閉節流閥2 8 C與左 側油壓缸4 A之間的油壓管路’電磁閥2 9 B啓閉節流閥 2 8 B與右側油壓缸4 B之間的油壓管路’電磁閥2 9 D 啓閉節流閥2 8 D與右側油壓缸4 B之間的油壓管路。且 ，於第6圖中’ 3 4係左缸接口，3 5係右紅接口 ’ 3 6 (請先閱讀背面之注意事項再填寫本頁) =-β 丨線· i紙張纽適用中_家標率(CNS)A4規格（210 X 297公釐） -8 - 457196 A7 B7 五、發明說明（6 ) ill — --I---— -ΓΛ_ — I (請先閱讀背面之注意事項再填寫本頁} 係泵接口，37係槽接口，於第7圖中，32A、3 2 B 係非常時刻使車載台ΙΑ、 1B下降之下降閥’38A、 38B係防止車載台ΙΑ、 1B異常下降之安全閥，39 係油壓泵，4 0係槽。 另一方面，如第3圖所示，前後一對空氣限制器3 1 A、3 1 B配設於昇降機底座3，使空氣限制器3 1 A、 31B作動之牽動具（dog) 33A、33B安裝於轉動 板4之二端部。如第5圖之空氣回路所示，空氣限制器 31A、 31B經由壓力開關41及切換閥43連接於空 --線- 氣供給組件4 2。壓力開關4 1收納於油壓組件6，其如 第8圖之電路所示，連接於電磁閥2 9 A〜2 9 D之電磁 線圈SOL 1〜SOL 4及切換閥4 3之電磁線圏SO.L 5。並且，於左右車載台ΙΑ、 1B發生大的高低差，轉 動板1 4之角度超過容許値時，開啓空氣限制器3 1 A或 3 1 B，響應壓力降低，壓力開關4 1導通，電磁線圈 S〇L1〜301^5分別消磁，二油壓缸4厶、4B馬上 停止。且’於第8圖中，PBU係上昇用按鈕開關， P B D係下降用按鈕開關。 經濟部智慧財產局員工消費合作社印製 -. 其次，就如上述構成之油壓同步裝置之作用加以說明 。一按壓上昇用開關P B U，電磁線圈s 0 L 1及S 0 L 2即勵磁，電磁閥2 9 A及2 9 B開啓，壓給油自泵3 9 供至二油壓缸4A、 4B，左右車載台ία及1B上昇。 在各車載台1 A與1 B之高度相等情形下，由於左右滾子 軸5 A及5 B向前方移動相同距離（於第1圖中l = R) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-9 - 457196 A7 B7 五、發明說明（7 ) (請先閱讀背面之注意事項再填窝本頁) ，故於鏈條7之相對部之間未發生壓力差，轉動板1 4停 止，空氣檢測器1 1 A與1 1 B —起保持於關閉狀態。因 此，於油壓組件6中，氣缸1 2及臂部2 2分別停止於中 立位置，流量控制閥1 3之柱塞2 7及2 7 B將節流閥2 8 A及2 8 B開啓成同一開度，同量壓給油通過電磁閥2 9A及2 9 B供至左右油缸4A及4 B，左右車載台1 A 與1 B保持於同一高度。 相對於此’在某些原因作下左側車載台1 A變成高於 右側車載台1 B時’左側滾子軸5 A之移動距離較右側滾 子軸5B之移動距離表（L)R)，由於鏈條7之全長一 定，故於其相對部之間，內側鬆而外側緊，故轉動板1 4 藉此張力差如第3及5圖順時鐘方向轉動。並且，以轉動 板1 4前端按壓柱塞1 a開啓空氣檢測器1 1 a，氣缸 1 2之活塞桿1 2 a朝第4圖之右側移動，經由槓桿2 3 及連桿2 4，臂部2 2順時鐘方向搖動，以螺栓2 6 A推 入柱塞2 7 A，縮小節流閥2 8 A之開度，供至左壓油壓 缸4 A之供給油量變成較供至右側油壓缸4 B之供給油量 ，結果’左右車載台1 A與1 B等齊於相同高度。 經濟部智慧財產局員工消費合作社印製 相反地，在左側車載台1 A變成較右側車載台1 B低 情形下，左側滾子軸5 A之移動距離變成較右側滾子軸 5B之移動距離短（L<R)，於鏈條之相對部之間，內 側緊而外側鬆，藉此張力差，轉動板1 4逆時鐘方向轉動 。並且，以轉動板1 4按壓柱塞1 1 b，開啓空氣檢測器 1 1B ’氣缸12之活塞桿12a朝左側移動，臂部22 本纸張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-10- 4 571 9 6 A7 B7 五、發明說明（8 ) (請先閱讀背面之注意事項再填寫本頁) 逆時鐘方向搖動’以螺栓2 6 B推入柱塞2 7 B ’縮小節 流閥2 8 Β之開度，供至右側油壓缸4 Β之供給油量變成 較供至左側油壓缸4 Α之供給油量少’結果’左右車載台 1 A與1 B等齊於相同高度。 另一方面，按壓下降用按鈕開關P B D時’電磁閥S 0L3及S0L4勵磁，電磁閥2 9 C及2 9D開啓，壓 給油自左右油壓缸4A、4 B排至槽4 0，左右車載台1 A及1 B下降。在各車載台1 A及1 B之高度相等情形下 ，如同上昇時，於鏈條7之相對部之間無壓力差發生，轉 動板1 4停止，空氣檢測器1 1 A及1 1 B —起關閉，氣 缸1 2及臂部2 2分別停止於中立位置。因此，柱塞2 7 C及2 7D將節流閥2 8 C及2 8D開啓成同一開度，同 量壓給油自左右油缸4A及4 B流出，左右車載台1 A及 l· B保持於相同高度。 經濟部智慧財產局員工消費合作社印製 相對於此，在左側車載台1 A變成較右側車載台1 B 高情形下，於鏈條7之相對部之間內側鬆而外側緊，藉此 張力差，轉動板1 4順時鐘方向轉動。並且，以轉動板 1 4之前端按壓柱塞1 1 a，空氣檢測器1 1 A開啓，氣 缸1 2之活塞桿1 2 a右側移動，經由槓桿2 3及連桿2 4，臂部2 2順時鐘方向搖動，以螺栓2 6 D推入柱塞2 7 D，節流閥2 8 D之開度縮小，右側油壓缸4 B之排出 油量變成較左側油壓缸4 A之排出油量少，結果，左右車 載台1A與1B等齊於相同高度。 相反地，在左側車載台1 A低於右側車載台1 B情形 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公f ) - 11 - 含57196 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（9 ) 下’於鏈條7之相對部之間內側緊而外側鬆，藉此張力差 ’轉動板1 4逆時鐘方向轉動。並且，以轉動板1 4後端 按壓柱塞1 1 b，空氣檢測器1 1 B開啓，氣缸1 2之活 塞桿1 2 a朝左側移動，臂部2 2逆時鐘方向搖動，以螺 栓2 6 C推入柱塞2 7 C ’縮小節流閥2 8 C之開度，左 側油壓缸4 A之排出油量變成較右側油壓缸4 B之排出油 量少’結果，左右車載台1 A與1 B等齊於相同高度》 根據此實施形態之油壓同步裝置，由於使用鏈條7、 轉動板1 4及空氣檢測器1 1 A、1 1 B機械式檢測左右 車載台1A、 1B之高低差，故相較於使用同步缸筒、編 碼器之習知裝置，可更簡單，小型且低廉地分別構成檢測 機構以及油壓暨電控制回路，同時故障少，可長時間維持 高的同步精度。又，由於作爲電氣機器之流量控制閥1 3 及壓力開關4 1收納於與昇降機本體隔離之油壓組件6內 ’因此’就算是不採取特別防爆對策，亦可在加油站，油 漆工廠等容易發生易燃性氣體之場所安定地運轉昇降機。 進一步’在上昇時或下降時，於左右車載台ΙΑ、 1B發 生大的高低差當兒，以空氣限制器3 1 A或3 1 B確實撿 測異常’藉壓力開關4 1爲上停止油壓缸4 A及4 B，可 防止汽車於傾斜狀態下昇降的危險於未然。 第9圖係顯示車載台ία、 1B高低差檢測機構變更 例之圖式。於此檢測機構中，空氣檢測器1 1 A、 1 1 B 藉由配置於轉動板1 4前後之滑動板5 1 A、5 1 B作動 。又’鏈條7交叉繫掛在轉動板1 4上之活動鏈輪1 6、 (請先閱讀背面之注$項再填窝本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-12 - 457190 A7 B7 五、發明說明〇〇 ) 17與昇降機底座3上之固定鏈輪18、 19，藉由鏈條 ----Ji! ΓΛ »11 (請先閱讀背面之注意事項再填寫本頁) 7之張力變化’轉動板1 4繞軸1 5轉動。於第9圖中， 7 a顯示鏈條7之交叉部’惟其他與第3圖相同之符號則 顯示與前述實施形態相同或相當之構件。 前方滑動板5 1 A配置成可藉前後一對長孔5 2、 5 3朝前後方向滑動支持於昇降機底座3上之固定軸5 4 、5 5，藉彈簧5 6，朝與轉動板1 4嵌合方向’亦即朝 後方施加勢能。前方長孔5 2形成較固定軸5 4寬~~些， 於轉動板1 4如圖式順時鐘方向轉動時，滑動板5 1 A以 後方固定軸5 5爲中心略微傾斜，使空氣檢測器1 1 a作 動後’抵抗彈簧5 6之彈力朝前方滑動，以牽動器3 3 A 使引動器31A作動。 後方滑動板5 1 B配置成可藉前後一對長孔5 7、 -線.4 1 9 6 A7 B7 V. Description of the invention (1) Technical field to which the invention belongs (please read the precautions on the back before filling in this page) The invention relates to a type of elevator used in automobile maintenance to lift left and right vehicle platforms to Hydraulic synchronizers of the same height. Known technology In order to raise and lower the left and right platforms with individual hydraulic cylinders and keep them at the same height, the oil pressure of the two hydraulic cylinders must be controlled to the same amount. As for a hydraulic synchronizing device having such a function, the technologies shown in Figs. 11 and 12 have been known in the past. The device shown in Fig. 12 is provided with a synchronous cylinder 73 between the hydraulic assembly 71 and the two hydraulic cylinders 72A and 72B. The device shown in FIG. 12 is configured to detect the momentum of the two hydraulic cylinders 7 2 A and 7 2 B with encoders 7 4 A and 7 4 B, respectively, and the electric control circuit 7 5 controls the proportional control valve 7 6 based on these signals. A, 7 6 B. Problems to be Solved by the Invention However, in order for the hydraulic cylinders 72A and 72B to reciprocate once, the cylinder cylinder 73 may travel one stroke. The device shown in Fig. 11 will increase the size of the synchronous cylinder 7 3 correspondingly when the size or stroke of the hydraulic cylinder 7 2 A and the printed clothing 7 2 B of the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs is large. Requires machining accuracy and increased cost. In addition, in the case of the device shown in FIG. 12, the encoders 7 4 and 7 4 B are used to electrically detect the momentum of the hydraulic cylinders 72A and 72B, so it is not suitable to be installed in a gas station or a paint factory. Lifts in places of gas. Therefore, the present invention aims to provide a mechanical constitution detection mechanism, which can use simple, small, and inexpensive devices to control the two-hydraulic cylinders with high precision and synchronously. The paper size is applicable to China National Standard (CNS) A4 (210 X 297). PCT) -4-4 57196 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (2) Hydraulic synchronizing device for elevators for vehicle maintenance. Means for solving the problem In order to solve the above problem, the oil pressure synchronizing device of the present invention is provided from the hydraulic component to supply oil pressure to the two oil pressure cylinders. It is characterized by a detector that detects the height difference between the left and right vehicle platform by a cable member that moves along with the 'lifting and lowering of the left and right vehicle platform, and a moving body that moves according to the tension change of the cable member' and the moving body. It consists of an air-actuated actuator selected from an air detector and a flow control valve that controls the oil pressure of the two hydraulic cylinders to the same amount according to the output of the actuator. The actuator and the flow control valve are housed in a hydraulic assembly ( Patent application scope item 1). Further, the hydraulic synchronizing device of the present invention is characterized in that, in order to stop the lift immediately when an abnormality occurs, the air limiter is provided with an air limiter that moves when the moving body exceeds the allowable moment, and stops the hydraulic cylinder in response to the operation of the air limiter. The air limiter and pressure switch are housed in a hydraulic module (the second in the scope of patent application). According to a preferred embodiment of the present invention, the aforementioned flow control valve is provided with a plunger linked with an actuator. Throttle valve for adjusting the opening degree by plunger, and solenoid valve for opening and closing the oil pressure pipeline between the throttle valve and the hydraulic cylinder (items 3 and 4 of the scope of patent application). It also supports the aforementioned vehicle platform on the elevator base via individual X-chain telescopic mechanisms. At each foot of each telescopic mechanism, a roller shaft that is linked with the vehicle platform and moves forward and backward is provided with a cable member around the elevator base to connect them. Roller (please read the precautions on the back before filling this page) ry order · · thread · This paper size is applicable to Yin national standard (CNS) A4 specification (210 X 297 mm> _ 5-457196 A7 B7 V. Description of the invention (3) (谞 Please read the precautions on the back before filling this page) The shaft is on the second part of the cable member (the scope of the patent application is the fifth item). According to the elevator using the X-chain telescopic mechanism, please use rollers. The amount of movement of the shaft and the amount of lifting of the vehicle platform are larger, so by connecting the cable member to the roller shaft, the height difference of the vehicle platform can be detected with a small mechanism. Of course, steel wires and belts can also be used as cable members. However, in terms of obtaining high detection accuracy, it is better to use a chain (items 6 and 7 of the scope of patent application). In addition, a member that rotates or slides according to the change in the tension of the chain can be used as the moving body. Embodiments The embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, in the automobile maintenance lifter of this embodiment, the left and right vehicle platforms 1 A, LB pass through individual X-chain telescopic mechanisms 2 A, 2 B is supported by the elevator base 3, and lifted by individual hydraulic cylinders 4 A and 4 B. A roller shaft 5 A is provided at the foot of the left telescopic mechanism 2 A in conjunction with the vehicle platform 1 A and moves forward and backward. The foot of the telescopic mechanism 2 B is provided with a roller shaft 5B that moves forward and backward in cooperation with the vehicle-mounted platform 1 B. A hydraulic component 6 for supplying oil pressure is provided in the two hydraulic cylinders 4A and 4 Β. Ministry of Economy Wisdom Printed by the employee's consumer cooperative of the Property Bureau as shown in Figure 2, around the elevator base 3, a chain 7 as a cable member is borrowed from a plurality of sprocket wheels 8 to form a 3 shape endless. A part of the left side of the chain 7 is connected through a joint 9 Α A part of the right side of the roller shaft 5 A 'is connected to the roller shaft 5 B via a joint 9 B ° A cross section 7 a is provided on the right side of the chain 7 and a tension adjuster 10 is installed at the center' The lifting chain 7 of the car platform 1 A, 1 B rotates forward and reverse. The paper size on the left of Article 7 applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love)-6-457196 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. In the side section of the description of the invention (4) 'The rotating plate 1 4 as a moving body can be supported on the elevator base 3 by the central shaft 15. As shown in FIG. 3' On the rotating plate 1 4, a pair of front and rear movable sprocket wheels 16, 17 are installed on the A fixed sprocket 18 is installed in front of and behind the movable sprocket 16 on the front side of the elevator base 3 ′ on the circumference centered on the shaft 15, and is installed in front of and behind the movable sprocket 17 on the rear side. Two fixed sprocket wheels 1.9. In addition, a pair of front and rear air detectors 1 1 A and 1 1 B are fixed to the elevator base 3 and fitted with the front edge of the rotating plate 14. A plunger 1 1 a is provided on the air detector 1 1 A and is connected to the rotating plate. 1 4 A plunger 1 1 b fitted with a rear edge is provided on the air detector 1 1 B. In addition, the key chain 7 is wound around each of the sprocket wheels 16, 17, 18, and 19. When the height difference between the left and right vehicle platforms 1A and 1B occurs, the rotating plate 14 rotates by the tension difference between the opposite parts of the chain 7, and the air The detector 1 1 A or 1 1 B detects the height difference between the left and right vehicle stations 1 A and 1 B. As shown in Fig. 4, a hydraulic pump 39, a groove 40 (refer to Fig. 7) and other standard hydraulic equipment are installed in the hydraulic assembly 6, and at the same time, a cylinder 12 as an actuator and a cylinder 12 according to the cylinder 12 are stored. The output controls the oil pressure of the two hydraulic cylinders 4A and 4 B to the same amount of flow control valve 1 3 ° Cylinder 1 2 Connected to the air detector via piping 20A, 20B and relief valves 21A, 21B (refer to Figure 5) 11A, 11B 'Piston rod 12 a is driven to the right or left by the air returned to either of the air detectors 11A or 11B. The arm portion 2 2 is swingably supported in front of the flow control valve 1 3 ′, and is driven by a piston rod 1 2 a via a lever 2 3 and a connecting rod 2 4. Blade plate 2 5 •-r. K 1 · nnn I ^ [»· (Please read the phonetic ¥ on the back before filling out this page) Magic · --line-This paper size applies to China National Standard (CNS) A4 specifications ( 210 X 297 mm) -7- 457196 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (5) Fixed on the arm 2 2 and install two upper and lower branches on its left and right wings respectively. Bolts 26A, 26D and 26B, 26C. In addition, with the swing of the arm portion 22, the bolts 26A to 2D of the blade plate 25 generate a level difference corresponding to the left and right vehicle platforms 11A and 11B. The lever 23 is provided with a spring 3 0 0 ′ for returning the piston rod 1 2 a to a neutral position. As shown in FIGS. 6 and 7, a four-pillar plug 2 is protruded forward from the flow control valve 13 3 7A ~ 2 7D, plunger 2 7A is pushed by left and right bolts 2 6A, plunger 2 7D is pushed by left lower bolt 26. The plunger 2 7B is pushed by the upper right bolt 2 5 B, and the plunger 2 7 C is pushed by the lower left bolt 2 5 C. The four throttle valves 2 8 A ~ 2 8 D are installed inside the valve assembly 1 3, and the throttle valve 2 8 A increases or decreases the amount of oil supplied to the left hydraulic cylinder 4 A by the opening degree adjusted by the plunger. Throttle valve 2 8 C increases or decreases the amount of oil supplied to the left hydraulic cylinder 4 A with the opening adjusted by plunger 2 7 C, and throttle valve 2 8 B opens with the adjustment of plunger 2 7 B. Increase or decrease the amount of oil supplied to the right hydraulic cylinder 4 B 'Throttle valve 2 8 D increases or decreases the amount of oil discharged from the right hydraulic cylinder 4 B with the opening adjusted by the plunger 2 7 D. In addition, four solenoid valves 2 9 A to 2 9 D are installed on the rear side of the flow control valve 1 3, and the solenoid valve 2 9 A is an on-off throttle valve 2 8 A and a hydraulic circuit between the left hydraulic cylinder 4 A The solenoid valve 2 9 C opens and closes the throttle valve 2 8 C and the hydraulic pressure line between the left hydraulic cylinder 4 A. The solenoid valve 2 9 B opens and closes the throttle valve 2 8 B and the right hydraulic cylinder 4 B The oil pressure line between the solenoid valve 2 9 D and the oil pressure line between the opening and closing throttle valve 2 8 D and the right hydraulic cylinder 4 B. And, in Figure 6, '3 4 series left cylinder interface, 3 5 series right red interface' 3 6 (Please read the precautions on the back before filling out this page) = -β 丨 line · i paper button is in use_ 家Standard rate (CNS) A4 specification (210 X 297 mm) -8-457196 A7 B7 V. Description of invention (6) ill — --I ---— -ΓΛ_ — I (Please read the notes on the back before filling This page} is a pump interface, a 37-slot interface. In Figure 7, 32A, 3 2 B are the down valves' 38A, 38B that prevent the mobile stations IA, 1B from falling at all times. Safety valve, 39 series hydraulic pump, 40 series tank. On the other hand, as shown in Fig. 3, a pair of front and rear air restrictors 3 1 A, 3 1 B are arranged on the elevator base 3 to make the air restrictor 3 The dogs 33A and 33B actuated by 1 A and 31B are installed on the two ends of the rotating plate 4. As shown in the air circuit in FIG. 5, the air limiters 31A and 31B are connected to the pressure switch 41 and the switching valve 43. Air-line-air supply module 4 2. The pressure switch 41 is housed in the hydraulic module 6, which is connected to the solenoid SOL of the solenoid valve 2 9 A to 2 9 D as shown in the circuit of FIG. 8 1 to SOL 4 and solenoid valve 圏 SO.L 5 of switching valve 4 3. When a large height difference occurs between the left and right vehicle stations IA and 1B, and the angle of the rotating plate 1 4 exceeds the allowable ，, the air limiter 3 1 is opened. A or 3 1 B, in response to a decrease in pressure, the pressure switch 41 is turned on, and the solenoid coils SOL1 to 301 ^ 5 are demagnetized respectively, and the two hydraulic cylinders 44 and 4B immediately stop. With push button switch, PBD is a push button for descending. Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economy-. Secondly, the function of the oil pressure synchronizing device configured as described above will be explained. One press of the ascending switch PBU, solenoid coil s 0 L 1 and S 0 L 2 are excitations, the solenoid valves 2 9 A and 2 9 B are opened, and the pressure oil is supplied from the pump 3 9 to the two hydraulic cylinders 4A and 4B, and the left and right vehicle platforms ία and 1B rise. When the heights of 1 A and 1 B are equal, the left and right roller shafts 5 A and 5 B move the same distance forward (l = R in the first figure). This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -9-457196 A7 B7 V. Description of the invention (7) (Please read the precautions on the back first Filling this page), so there is no pressure difference between the opposite parts of the chain 7, the rotating plate 14 stops, and the air detectors 1 1 A and 1 1 B are kept closed together. Therefore, the hydraulic assembly 6 In the middle, the cylinder 12 and the arm 22 are stopped at the neutral positions respectively. The plungers 2 7 and 2 7 B of the flow control valve 1 3 open the throttle valves 2 8 A and 2 8 B to the same opening degree and the same pressure. The oil supply is supplied to the left and right oil cylinders 4A and 4 B through the solenoid valves 2 9A and 2 9 B, and the left and right vehicle stations 1 A and 1 B are maintained at the same height. In contrast, when the left vehicle-mounted station 1 A becomes higher than the right vehicle-mounted station 1 B for some reasons, the movement distance of the left roller axis 5 A is greater than the movement distance table (L) R of the right roller axis 5B), Because the full length of the chain 7 is constant, between the opposite parts, the inside is loose and the outside is tight, so the rotating plate 1 4 rotates in the clockwise direction as shown in Figures 3 and 5 by this tension difference. Then, press the plunger 1 a with the front end of the rotating plate 1 4 to turn on the air detector 1 1 a, and the piston rod 1 2 a of the cylinder 12 moves to the right in FIG. 4. 2 2 Shake in the clockwise direction, push the plunger 2 7 A with the bolt 2 6 A, reduce the opening of the throttle valve 2 8 A, and the amount of oil supplied to the left pressure cylinder 4 A becomes larger than that supplied to the right The amount of oil supplied from the cylinder 4 B results in that the left and right vehicle-mounted stations 1 A and 1 B are at the same height. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Conversely, when the left-hand vehicle station 1 A becomes lower than the right-hand vehicle station 1 B, the moving distance of the left roller axis 5 A becomes shorter than that of the right roller axis 5B (L < R), between the opposite parts of the chain, the inner side is tight and the outer side is loose. Due to the tension difference, the rotating plate 14 rotates counterclockwise. In addition, press the plunger 1 1 b with the rotating plate 1 4 to turn on the air detector 1 1B. The piston rod 12a of the cylinder 12 moves to the left, and the arm portion 22 is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) -10- 4 571 9 6 A7 B7 V. Description of the invention (8) (Please read the precautions on the back before filling this page) Shake counterclockwise to push the plunger 2 6 B into the plunger 2 7 B 'The opening of the throttle valve 2 8 Β is reduced, and the amount of oil supplied to the right hydraulic cylinder 4 Β becomes smaller than the amount of oil supplied to the left hydraulic cylinder 4 Α' Result 'The left and right vehicle platforms 1 A and 1 B Equal to the same height. On the other hand, when the down button switch PBD is pressed, the solenoid valves S 0L3 and S0L4 are excited, the solenoid valves 2 9 C and 29D are opened, and the pressure oil is discharged from the left and right hydraulic cylinders 4A and 4 B to the tank 40, and the left and right vehicles Platforms 1 A and 1 B fell. In the case where the heights of each of the vehicle-mounted stations 1 A and 1 B are equal, as when rising, no pressure difference occurs between the opposite parts of the chain 7, the rotating plate 14 stops, and the air detectors 1 1 A and 1 1 B start The cylinders 12 and the arms 22 are closed in the neutral positions, respectively. Therefore, the plungers 2 7 C and 2 7D open the throttle valves 2 8 C and 2 8D to the same opening degree, and the same amount of pressure oil flows out from the left and right oil cylinders 4A and 4 B, and the left and right vehicle stations 1 A and 1 · B are maintained at Same height. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, in the case where the left-hand vehicle station 1 A becomes higher than the right-hand vehicle station 1 B, the inside of the chain 7's opposite part is loose and the outside is tight. Turn the plate 1 4 clockwise. Then, when the plunger 1 1 a is pressed with the front end of the rotating plate 1 4, the air detector 1 1 A is turned on, and the piston rod 1 2 a of the cylinder 12 is moved to the right, via the lever 2 3 and the connecting rod 2 4 and the arm portion 2 2 Shake in the clockwise direction, push the plunger 2 7 D with the bolt 2 6 D, the opening of the throttle valve 2 8 D is reduced, and the amount of oil discharged from the right hydraulic cylinder 4 B becomes larger than that of the left hydraulic cylinder 4 A The amount is small, and as a result, the left and right vehicle-mounted stations 1A and 1B are at the same height. Conversely, when the left-hand vehicle station 1 A is lower than the right-hand vehicle station 1 B, the paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 male f)-11-Including 57196 A7 B7 Employees ’intellectual property bureau consumption Cooperative printed 5. Description of the invention (9) The lower part of the chain 7 is tight on the inside and loose on the outside, so that the tension plate 14 rotates counterclockwise. Then, the plunger 1 1 b is pressed with the rear end of the rotating plate 1 4, the air detector 1 1 B is turned on, the piston rod 1 2 a of the cylinder 12 is moved to the left, the arm portion 2 2 is swung counterclockwise, and the bolt 2 6 C pushes the plunger 2 7 C 'the opening of the throttle valve 2 8 C is reduced, and the amount of oil discharged from the left hydraulic cylinder 4 A becomes less than the amount of oil discharged from the right hydraulic cylinder 4 B'. A and 1 B are equal at the same height. "According to the hydraulic synchronizing device of this embodiment, since the chain 7, the rotating plate 14 and the air detector 1 1 A, 1 1 B are used to mechanically detect the left and right vehicle stations 1A, 1B. The height difference, so compared to the conventional device using synchronous cylinders and encoders, it can be simpler, smaller and cheaper to constitute the detection mechanism and the oil pressure and electric control circuit, respectively, while there are fewer failures, which can maintain high synchronization for a long time Precision. In addition, since the flow control valve 1 3 and the pressure switch 41, which are electric devices, are housed in a hydraulic module 6 that is isolated from the main body of the elevator, it can be easily installed at gas stations, paint factories, etc. even if no special explosion-proof measures are taken. Operate the elevator safely in the place where flammable gas is generated. Furthermore, when a large step difference occurs between the left and right vehicle stations IA and 1B during the ascent or descent, the air limiter 3 1 A or 3 1 B will definitely detect the abnormality. The pressure switch 4 1 is used to stop the oil pressure. The cylinders 4 A and 4 B can prevent the danger of the car from rising and falling when it is tilted. Fig. 9 is a diagram showing a modification example of the height difference detection mechanism of the vehicle-mounted stations α and 1B. In this detection mechanism, the air detectors 1 1 A, 1 1 B are actuated by the sliding plates 5 1 A, 5 1 B arranged before and after the rotating plate 14. The chain 7 is linked to the movable sprocket 16 on the rotating plate 1 4. (Please read the note on the back before filling in this page) This paper size applies to China National Standard (CNS) A4 (210 X 297mm) -12-457190 A7 B7 V. Description of the invention 〇〇) 17 and the fixed sprocket 18, 19 on the elevator base 3, by the chain ---- Ji! ΓΛ »11 (Please read the note on the back first Please fill in this page again.) 7 Change of tension 'Rotating plate 1 4 rotates around axis 1 5'. In Fig. 9, 7a shows the crossing portion of the chain 7 ', but the other symbols same as those in Fig. 3 show the same or equivalent components as in the previous embodiment. The front sliding plate 5 1 A is configured to slide the fixed shafts 5 4 and 5 5 supported by the elevator base 3 in a forward and backward direction by a pair of front and rear long holes 5 2 and 5 3, and a spring 5 6 toward the rotating plate 1 4 The mating direction, that is, the potential energy is applied to the rear. The front long hole 5 2 is wider than the fixed shaft 5 4. When the rotating plate 1 4 rotates clockwise as shown in the figure, the sliding plate 5 1 A is slightly tilted around the rear fixed shaft 5 5 as the center to make the air detector. After 1 1 a is actuated, it slides forward against the elastic force of the spring 5 6, and the actuator 31A is actuated by the actuator 3 3 A. The rear sliding plate 5 1 B is configured to borrow a pair of front and rear long holes 5 7 and-lines.
經濟部智慧財產局員工消費合作社印M 5 8朝前後方向滑動支持於昇降機底座3上之固定軸5 9 、6 0 ’藉彈簧6 1朝與轉動板1 4嵌合之方向，亦即朝 方施加勢能。後方長孔5 8形成較固定軸6 0寬一些，於 轉動板1 4如圖式逆時鐘方向轉動時，滑動板5 1 B以前 方固定軸5 9爲中心略微傾斜，使空氣限制器1 1 B作動 後，抵抗彈簧6 1之彈力朝後方滑動，以牽動器3 3 B使 引動器3 1 B作動。 根據上述構造，由於藉由滑動板51A、 51B之前 後動作使空氣檢測器1 1 A、1 1 B及空氣限制器3 1 a 、3 1B作動，故具有可藉由移動體之些微移動確實檢測 出鏈條7之張力變化，可於狹幅範圍內構成檢測機構，在 本紙張尺度適用中國國家標準（CNS)A4規格（210x 297公釐）-13- 457196 A7 B7 五、發明說明（n ) 昇降機底座3的有限空間內設成微型之優點。 弟1圖係顯不檢測機構之另一變更例之圖式。於此， 空氣檢測器11A、 11B及空氣限制器31A, 31B 藉單一滑動板6 3作動。滑動板6 3以長孔6 4朝前後方 向可滑動支持於昇降機底座（圖示省略）上之固定軸6 5 ’以彈簧6 6朝後方施加勢能。使用一開口鏈條6 7來作 爲索條構件，其一端經由接頭9 A自前方聯結於左側滾子 軸5A ’另一端經由接頭9 b及張力調節具有1 0自後方 聯結於右側滚子軸5 B。 並且，鏈條6 7捲繞在支持於滑動板6 3之活動鏈輪 6 8及支持於昇降機底座之固定鏈輪6 9，鏈輪6 7之左 側部份6 7 a鬆弛時，滑動板6 3藉彈簧6 6之彈力朝後 方滑動，依序使空氣檢測器1 1 A及空氣限制器3 1 A作 動，在鏈條6 7之右側部份6 7 b緊張時，滑動板6 3抵 抗彈簧6 6之彈力朝前方滑動，使空氣檢測器1 1 B及空 氣限制器3 1 B依序作動°因此，根據此構造，可用簡單 且小型機構確實檢測車載台之高低差° 且，本發明不限於上述實施形態，例如，使用鋼絲、 皮帶來代替鏈條’使用空氣動力機、類似空氣機器或油壓 機器來代替氣缸，應用於雙柱式汽車維修用昇降機之油壓 同步裝置等，亦可在不悖離本發明宗旨之範圍內，適當變 更各部形狀及構造’予以實施。 本紙張尺度適用中國國家標準（CNS)如規格⑽X 297公楚）—14 I n ΛΊ n It n I .^J.^· n (請先閲讀背面之注意事項再填寫本頁) 訂： --線- 經濟部智慧財產局員工消費合作社印製 4 5 7 1 9 6 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（12 ) 如以上詳述，根據本發明油壓同步裝置，奏得由索條 構件，移動體及空氣檢測器機械式構成檢測車載台高低差 之機構，可藉簡單、小型且低廉裝置高精度同步控制二油 壓缸之優異效果。 圖式之簡蛩說明 第1圖係顯示本發明一實施形態之汽車維修用昇降機 之斜視圖。 第2圖係第1圖之昇降機之平面圖。 第3圖係放大第2圖一部份以顯示油壓同步裝置之檢 測機構之平面圖。 第4圖係顯示油壓同步裝置之汽缸及流量控制閥之平 面圖。 第5圖係油壓同步裝置之空氣回路圖。 第6圖係第4圖之流量控制閥之斜視圖。 第7圖係油壓同步裝置之油壓回路圖。 第8圖係油壓同步裝置之電路圖。 第9圖係顯示檢測機構之變更例之平面圖。 第1 0圖係顯示檢測機構之另一變更例之平面圖。 第11圖係顯示習知一油壓同步裝置之槪略圖。 第12圖係顯示習知另一油壓同步裝置之槪略圖。 符號說明 ΙΑ、 1B 車載台 1本纸張尺度適i ¥國國家標準（CNS)A4規格⑵Q x 297公蓳_)~" (請先間讀背面之注意事項再填寫本頁) 訂. _線· 457196 A7 _B7 五、發明說明（13 ) 經濟部智慧財產局員工消費合作社印製 2A、 2B X 鏈 式 伸 縮機構 3 昇 降 機 底 座 4A、 4B 油 壓 缸 5A、 5B 滾 子 軸 6 油 壓 組 件 7、 67 鏈 條 1 1 A 、1 IB 空 氣 檢 測 器 12 氣 缸 13 流 量 控 制 閥 14 轉 動 板 28A-28D 節 流 閥 29A^ -29D 電 *Ι--ϋ 閥 31A 、31B 空 氣 限 制 器 41 壓 力 開 關 51A 、51B 、 63 滑 動 板 <請先閲讀背面之注意事項再填寫本頁) 訂： --線. 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-16-Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs M 5 8 The fixed shafts 5 9 and 6 0 supported on the base 3 of the elevator are slid forward and backward. The spring 6 1 is fitted in the direction of fitting with the rotating plate 1 4 Potential energy. The rear long hole 5 8 is wider than the fixed shaft 60. When the rotating plate 14 is rotated counterclockwise as shown in the figure, the sliding plate 5 1 B is slightly inclined with the front fixed shaft 5 9 as the center, so that the air limiter 1 1 After B is actuated, it slides backward against the elastic force of the spring 61, and the actuator 3 1 B is actuated by the puller 3 3 B. According to the above-mentioned structure, since the air detectors 1 1 A, 1 1 B, and the air limiters 3 1 a, 3 1B are actuated by the back and forth movement of the slide plates 51A and 51B, it is possible to surely detect by a slight movement of the moving body The change in tension of the output chain 7 can constitute a detection mechanism within a narrow range. The Chinese paper standard (CNS) A4 (210x 297 mm) applies to this paper size. 13- 457196 A7 B7 V. Description of the invention (n) Lift The advantage of miniaturization is provided in the limited space of the base 3. Brother 1 diagram is a diagram of another modified example of the non-detection mechanism. Here, the air detectors 11A and 11B and the air limiters 31A and 31B are operated by a single slide plate 63. The slide plate 6 3 faces the front and rear with the long holes 6 4 toward the fixed shaft 6 5 ′ that can be slidably supported on the base of the elevator (not shown) and exerts potential energy toward the rear with the spring 6 6. An open chain 6 7 is used as a cable member, one end of which is connected to the left roller shaft 5A from the front via a joint 9 A 'and the other end is connected to the right roller shaft 5 B from the rear via a joint 9 b and tension adjustment 10 . In addition, the chain 6 7 is wound around the movable sprocket 6 8 supported by the sliding plate 6 3 and the fixed sprocket 6 9 supported by the elevator base. When the left part 6 7 a of the sprocket 6 7 is loosened, the sliding plate 6 3 With the spring force of the spring 6 6 sliding backward, the air detector 1 1 A and the air limiter 3 1 A are actuated in sequence. When the right part 6 7 b of the chain 6 7 is tensioned, the sliding plate 6 3 resists the spring 6 6 The elastic force slides forward, causing the air detector 1 1 B and the air limiter 3 1 B to move sequentially. Therefore, according to this structure, a simple and small mechanism can be used to reliably detect the height difference of the vehicle-mounted station. Moreover, the present invention is not limited to the above. For example, the use of steel wires and leather belts instead of chains' use of air-powered machines, air-like machines or hydraulic machines instead of air cylinders, and hydraulic synchronizers used in double-column car maintenance lifts, etc. Within the scope of the gist of the present invention, the shape and structure of each part are appropriately changed and implemented. This paper size applies to Chinese National Standards (CNS) such as specification ⑽X 297. Chu—14 I n ΛΊ n It n I. ^ J. ^ · n (Please read the precautions on the back before filling this page) Order:- Line-Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 4 5 7 1 9 6 A7 B7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs V. Description of the Invention (12) As detailed above, according to the oil pressure synchronization device of the present invention, It is composed of a rope member, a moving body and an air detector to mechanically constitute a mechanism for detecting the height difference of the vehicle platform. The excellent effect of synchronously controlling the two hydraulic cylinders with high accuracy can be achieved by a simple, small and inexpensive device. Brief Description of the Drawings Fig. 1 is a perspective view showing a car maintenance lift according to an embodiment of the present invention. Figure 2 is a plan view of the elevator of Figure 1. Figure 3 is a plan view of a part of Figure 2 enlarged to show the detection mechanism of the oil pressure synchronizing device. Fig. 4 is a plan view showing a cylinder and a flow control valve of a hydraulic synchronizing device. Figure 5 is the air circuit diagram of the hydraulic synchronizing device. Figure 6 is a perspective view of the flow control valve of Figure 4. Figure 7 is a hydraulic circuit diagram of the hydraulic synchronization device. Fig. 8 is a circuit diagram of a hydraulic synchronizing device. Fig. 9 is a plan view showing a modified example of the detection mechanism. Fig. 10 is a plan view showing another modification of the detection mechanism. FIG. 11 is a schematic diagram showing a conventional hydraulic synchronizing device. FIG. 12 is a schematic diagram showing another conventional hydraulic synchronizing device. Explanation of symbols ΙΑ, 1B Vehicle-mounted station 1 Paper size is appropriate ¥ National Standard (CNS) A4 specification ⑵Q x 297 public 蓳 _) ~ " (Please read the precautions on the back before filling this page) Order. _ Line · 457196 A7 _B7 V. Description of the invention (13) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 2A, 2B X Chain-type telescopic mechanism 3 Lift base 4A, 4B Hydraulic cylinder 5A, 5B Roller shaft 6 Hydraulic component 7 、 67 Chain 1 1 A 、 1 IB Air detector 12 Cylinder 13 Flow control valve 14 Rotary plate 28A-28D Throttle valve 29A ^ -29D Electricity * I--ϋ Valves 31A and 31B Air limiter 41 Pressure switches 51A and 51B , 63 sliding plate < Please read the notes on the back before filling this page) Order: --line. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) -16-