200927907 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種爐底清理機構，特別指一種設置 於推焦與導焦車之清門框機底部之爐底清理機構。 【先前技術】 煉焦爐在運作時會產生一些廢氣，而煉焦爐之爐門若 無法確實有效的關閉，將造成此廢氣外洩而嚴重影響煉鋼 〇 廠附近之空氣品質，此乃一不容忽視之環保問題。為預防 上述問題發生，藉由設置於煉焦爐之推焦與導焦車中的清 門框機以刮除煉焦爐門框之爐渣，且同時利用設置於清門 框機底部之爐底清理機構以清除累積於爐門附近爐底之爐 渣，藉此保持煉焦爐門框與爐門附近爐底之清潔，以避免 因爐渣累積而影響爐門之關閉動作與氣密性。 ^ 請參照圖1，其為習知爐底清理機構之示意圖。習知 爐底清理機構2係設置於一清門框機4之底部，其包含有 一第一連桿6、一第二連桿8、一第三連桿10、一第四連 桿12、一油壓缸14、一爐底刮板16及一導盤刮板18。其 中，第一連桿6係可轉動的設置於清門框機4之一隔熱板 20底部，且其右側端係與第二連桿8之下側端作連結，而 爐底刮板16係設置於第一連桿6之左側端。第二連桿8之 上側端係與第三連桿10之左側端作連結，而第三連桿10 5 200927907 之右側端係可轉動的設置於清門框機4上。第四連桿12之 下側端係可轉動的連接清門框機4，而導盤刮板18係設置 於第四連桿12之上側端。油壓缸14之上側端係固定於清 門框機4且下側端係連結第四連桿12上之一點，藉由油壓 缸14之軸向伸縮可帶動第四連桿12作旋轉。此外，清門 框機4另包含有一刮刀架22、複數個設置於刮刀架22侧 邊之刮刀24、一設置於刮刀架22側邊之頂升塊26及一連 結油壓缸14與第四連桿12之基座28。 請參照圖2至圖4,其為習知爐底清理機構之動作流 程示意圖。首先請參照圖2，刮刀架22係以最低位置進入 一煉焦爐之爐床30。油壓缸14此時係處於縮回之狀態並 同時收起第四連桿12上之導盤刮板18，而爐底刮板16因 受第二連桿8之自重下降而反向舉起。 請參照圖3，接著刮刀架22上下來回移動數次以帶動 其侧邊之刮刀24進行清門框動作。當刮刀架22上升時， 位於其側邊之頂升塊26係同時上升以頂起第三連桿10連 結第二連桿8之左側端，並同時連動爐底刮板16反向撞擊 一爐底32。 請參照圖4，當清門框動作完成後，刮刀架22需定位 至一適當之位置，讓頂升塊26上頂第三連桿10以使爐底 刮板16能確實下壓至爐底32，同時油壓缸14軸向伸長以 200927907 旋轉放下導盤刮板18並使其下壓至一爐渣導盤34。接著， 整組清門框機4退出爐床30以同時清除爐底32與爐渣導 盤34上之爐潰（圖未示）。 綜合上述說明可知，習知爐底刮板下壓至爐底需藉由 刮刀架之上頂動作來完成，然而在刮刀架進行上下來回數 次之清門框動作的同時，爐底刮板於刮刀架每次上升時皆 會撞擊到爐底，因此將造成爐底與爐底清理機構的損傷。 再者，爐底刮板下壓至爐底之動作需藉由刮刀架上頂並定 位至一適當位置來完成，然而此定位卻不易達成。 【發明内容】 有鑑於此，為解決上述問題，本發明之主要目的係提 供一種爐底清理機構，以改善習知爐底清理機構會損傷爐 底及機構本體之問題。 為達上述目的，本發明係提供一種爐底清理機構，其 設置於一煉焦爐的一推焦與導焦車之一清門框機底部，用 以清除推焦後殘留在煉焦爐門口之一爐底之複數爐渣。本 發明之爐底清理機構包含一連桿機構、一導盤刮板、一爐 底刮板以及一導槽。其中，連桿機構係包含一第一連桿、 一第二連桿、一第三連桿、一第四連桿及一第五連桿，且 第一連桿、第二連桿、第三連桿、第四連桿及第五連桿係 依序作連結。導盤刮板設置於第五連桿之一端，用以刮除 7 200927907 一爐)'查導盤上之爐渔。爐底刮板設置於第一連桿之一端， 當第五連桿帶動導盤刮板相對爐渣導盤作移動時，同時帶 動第一連桿上之爐底刮板相對爐底作移動。導槽設置於第 四連桿上方，且第三連桿之一端係連結於導槽上並可在導 槽上滑動。 本發明之爐底清理機構包含一第一連桿、一第二連 桿、一第三連桿、一第四連桿、一第五連桿以及一油壓缸。 ® 其中，第一連桿之一端係可轉動的連結於清門框機之一隔 熱板下方，而另一端設置有一爐底刮板。第二連桿之一端 係連結帶動第一連桿以產生一轉動位移。第三連桿之一端 係可轉動的連結於隔熱板上方，且第二連桿之另一端係可 轉動的連結於第三連桿上之一點。第四連桿之一端具有一 導槽，且第三連桿之另一端係連結於導槽上並可在導槽上 滑動。第五連桿之一端係可轉動的連接清門框機，而另一 Ο 端設置有一用以刮除一爐潰導盤上之爐渣之導盤刮板。油 壓缸之一端係固定於清門框機，而另一端係連結第五連桿 及第四連桿之另一端，藉由油壓缸之軸向伸縮以帶動第五 連桿產生一轉動位移，且當第五連桿帶動導盤刮板相對爐 渣導盤作移動時，同時帶動第一連桿上之爐底刮板相對爐 底作移動。 本發明之爐底清理機構可在執行清門框動作時，藉著 200927907 導盤刮板之油壓缸配合連桿機構連動提起爐底刮板，而在 清Π框動作完成後，利用連桿機構配合重力作用使爐底刮 板下壓接觸爐底以清除推焦後殘留在煉焦爐門附近爐底之 爐;查’因此本發明之爐底清理機構並不需額外增加動力。 此外’相較於習知技術，本發明之爐底清理機構與到刀架 之上下凊門框動作無連動關係，因此可避免習知因上下清 严1框動作而連動爐底刮板撞擊損壞爐底及爐底清理機構本 〇 體之問題’且本發明之爐底刮板觸及爐底即停駐，因此無 定位調整之問題。 【實施方式】 為使對本發明的目的、構造特徵及其功能有進一步的 了解’兹配合相關實施例及圖式詳細說明如下： 明參照圖5 ’其為本發明較佳實施例之爐底清理機構 .之不意圖。本發明較佳實施例之爐底清理機構40設置於— 〇煉焦爐的—推焦與導焦車之―清門框機42底部，其係用以 清除推焦後殘留在煉焦爐門口之一爐底46之複數爐渣（圖 未不）。本發明較佳實施例之爐底清理機構40包含有—具 有一第一連桿48、—第二連桿5G、-第三連桿52、一第 四連杯54及一第五連桿56之連桿機構、一導盤刮板％、 一爐底刮板6G及-導槽62。其中，第—連桿48、第二連 才十5〇、第二連桿52、第四連桿54及第五連桿56係依序作 200927907 連結。導盤刮板58係設置於第五連桿56之上側端，其用 以刮除一爐渣導盤64上之爐渣。爐底刮板60係設置於第 一連桿48之左侧端，當第五連桿56帶動導盤刮板58相對 爐渣導盤64作移動時，可同時帶動第一連桿48上之爐底 刮板60相對爐底46作移動。導槽62係設置於第四連桿 54上方，且第三連桿52之右侧端係連結於導槽62上並可 在導槽62上滑動。 ® 本發明較佳實施例之清門框機42具有一隔熱板66， 第一連桿48遠離爐底刮板60之右側端係可轉動的連結於 隔熱板66下方，且第三連桿52遠離導槽62之左侧端可轉 動的連結於隔熱板66上方。而第二連桿50之上側端係可 轉動的連結於第三連桿52上之一點，其下侧端係可轉動的 連結第一連桿48，且其可帶動第一連桿48產生一轉動位 . 移。此外，連桿機構另包含有一可轴向伸縮之油壓缸68， ® 其上側端係固定於清門框機42，而下侧端連結第五連桿 56，藉由油壓缸68之軸向伸縮可帶動第五連桿56產生一 轉動位移。另外，第四連桿54遠離導槽62之下側端亦連 結油壓缸68與第五連桿56連結之下側端，藉由油壓缸68 之軸向伸縮可依序連動第四連桿54、第三連桿52、第二連 桿50及第一連桿48，以使設置於第一連桿48左侧端之爐 底刮板60可相對爐底46作移動。 200927907 請參照圖6至圖8，其為本發明較佳實施例之爐底清 理機構之動作流程示意圖。首先請參照圖6，清門框機42 之一刮刀架70進入一煉焦爐之爐床72。此時油壓缸68係 軸向縮回，而第五連桿56受帶動而旋轉收起，使得設置於 第五連桿56上側端之導盤刮板58相對遠離爐渣導盤64， 同時藉由第四連桿54、第三連桿52、第二連桿50及第一 連桿48之連動，使得設置於第一連桿48左側端之爐底刮 ® 板60亦被提起而相對遠離爐底46。因為本發明之爐底清 理機構40與刮刀架70之上下清門框動作無連動關係，因 此當刮刀架70帶動側邊之複數刮刀74上下移動進行清門 框動作時，爐底刮板60係被固定提起而不會撞擊爐底46。 請參照圖7，當清門框動作完成後，油壓缸68軸向伸 長帶動第五連桿56旋轉，使得設置於第五連桿56左側端 . 之導盤刮板58相對靠近爐渣導盤64直至其下壓觸及爐渣 ® 導盤64，以利後續進行刮除爐渣導盤64上爐渣（圖未示） 之作業。同時藉由第四連桿54、第三連桿52、第二連桿 50及第一連桿48之連動，使得設置於第一連桿48左侧端 之爐底刮板60不再被提起並因其自身之重力作用而相對 靠近爐底46，且當油壓缸68軸向伸長連動第四連桿54向 下移動時，第三連桿52連結導槽62之右側端因爐底刮板 60之重力作用而在導槽62上跟著第四連桿54同時向下移 11 200927907 動，而當爐底刮板60觸及爐底46並使其重力作用解除後， 第三連桿52連結導槽62之右側端係不再向下滑動。 請參照圖8，藉著連桿機構使得導盤刮板58與爐底刮 板60分別觸及爐渣導盤64與爐底46後，清門框機42相 對遠離煉焦爐之爐床72，並帶動導盤刮板58與爐底刮板 60分別刮除爐渣導盤64與爐底46上之爐渣（圖未示）。值 得注意的是，油壓缸68係跟著清門框機42之移動而持續 ❹ 伸長以帶動第五連桿56旋轉，以使得設置於第五連桿56 上之導盤刮板58可持續下壓至爐渣導盤64，而當油壓缸 68軸向伸長連動第四連桿54向下移動的同時，第四連桿 54可藉著導槽62在不牽動到第三連桿52連結導槽62之 右側端的情況下持續向下移動。 相較於習知技術，本發明之爐底清理機構具有以下特 i • 點： ❹ (1) 本發明之爐底清理機構可在執行清門框動作時，藉著導 盤到板之油壓缸配合連桿機構連動提起爐底刮板，而在 清門框動作完成後，利用連桿機構配合重力作用使爐底 刮板下壓接觸爐底以清除推焦後殘留在煉焦爐門附近 爐底之爐渔，因此本發明之爐底清理機構並不需額外增 加動力。 (2) 本發明之爐底清理機構與刮刀架之上下清門框動作無 12 200927907 連動關係，因此可避免習知因上下清門框動作而連動爐 底刮板撞擊損壞爐底及爐底清理機構本體之問題。 (3)本發明之爐底刮板觸及爐底即停駐，因此無習知定位調 整之問題。 雖然本發明以前述之較佳實施例揭露如上，然其並非 用以限定本發明，任何熟習相像技藝者，在不脫離本發明 之精神和範圍内，所作更動與潤飾之等效替換，仍為本發 〇 明之專利保護範圍内。 【圖式簡單說明】 圖1 習知爐底清理機構之示意圖； 圖2至4習知爐底清理機構之動作流程示意圖； 圖5 本發明較佳實施例之爐底清理機構之示意圖； 以及 _ 圖6至8本發明較佳實施例之爐底清理機構之動作流程 〇 示意圖。 【主要元件符號說明】 2 習知爐底清理機構 4 清門框機 6 第一連桿 8 第二連桿 10第三連桿 13 200927907 12 第四連桿 14油壓缸 16爐底刮板 18 導盤刮板 20 隔熱板 22 刮刀架 24 刮刀 ® 26頂升塊 28基座 30爐床 32爐底 34爐渣導盤 40爐底清理機構 42清門框機 ® 46爐底 48第一連桿 50第二連桿 52第三連桿 54 第四連桿 56第五連桿 58 導盤刮板 200927907 60爐底刮板 62導槽 64爐渣導盤 6 6隔熱板 6 8 油壓缸 70刮刀架 72爐床 刮刀 ❹ 74200927907 IX. INSTRUCTIONS: [Technical Field of the Invention] The present invention relates to a furnace bottom cleaning mechanism, and more particularly to a hearth cleaning mechanism disposed at the bottom of a clearing frame machine of a push-and-focus car. [Prior Art] When the coke oven is operated, some exhaust gas will be generated. If the furnace door of the coke oven cannot be effectively shut down, it will cause the exhaust gas to leak and seriously affect the air quality near the steelmaking plant. This cannot be ignored. Environmental issues. In order to prevent the above problems, the slag of the coke oven door frame is scraped off by the clearing frame machine installed in the coke oven and the lead car, and at the same time, the bottom cleaning mechanism disposed at the bottom of the door cleaning machine is used to remove the accumulated The slag at the bottom of the furnace near the furnace door, thereby keeping the bottom of the coke oven door frame and the furnace door clean, to avoid the closing action and airtightness of the furnace door due to the accumulation of slag. ^ Please refer to FIG. 1 , which is a schematic diagram of a conventional furnace bottom cleaning mechanism. The conventional bottom cleaning mechanism 2 is disposed at the bottom of a clearing frame machine 4, and includes a first connecting rod 6, a second connecting rod 8, a third connecting rod 10, a fourth connecting rod 12, and an oil. The pressure cylinder 14, a bottom scraper 16 and a disc scraper 18. The first connecting rod 6 is rotatably disposed at the bottom of one of the heat insulating panels 20 of the cleaning frame machine 4, and the right end end thereof is connected with the lower end end of the second connecting rod 8, and the bottom scraper 16 is attached. It is disposed at the left end of the first link 6. The upper end of the second link 8 is coupled to the left end of the third link 10, and the right end of the third link 10 5 200927907 is rotatably disposed on the clear frame machine 4. The lower end of the fourth link 12 is rotatably connected to the door frame machine 4, and the guide squeegee 18 is disposed at the upper side end of the fourth link 12. The upper end of the hydraulic cylinder 14 is fixed to the door frame machine 4 and the lower end is connected to a point on the fourth link 12. The axial expansion and contraction of the hydraulic cylinder 14 can drive the fourth link 12 to rotate. In addition, the door frame machine 4 further includes a doctor frame 22, a plurality of blades 24 disposed on the side of the blade holder 22, a lifting block 26 disposed on the side of the blade holder 22, and a connecting hydraulic cylinder 14 and a fourth connection. The base 28 of the rod 12. Please refer to FIG. 2 to FIG. 4 , which are schematic diagrams showing the action flow of the conventional bottom cleaning mechanism. Referring first to Figure 2, the beater frame 22 enters the hearth 30 of a coke oven at the lowest position. The hydraulic cylinder 14 is now in a retracted state and simultaneously retracts the disc scraper 18 on the fourth link 12, and the bottom scraper 16 is lifted in the reverse direction due to the lowering of the self-weight of the second link 8. . Referring to Fig. 3, the blade holder 22 is moved up and down a plurality of times to drive the blade 24 on the side to perform the door cleaning operation. When the scraper frame 22 is raised, the jacking block 26 on the side thereof is simultaneously raised to jack up the third link 10 to connect the left end of the second link 8, and at the same time, the bottom scraper 16 is reversely struck against the furnace. Bottom 32. Referring to FIG. 4, after the clearing frame operation is completed, the blade holder 22 needs to be positioned to a proper position, so that the third connecting rod 10 is topped on the lifting block 26 so that the bottom scraper 16 can be surely pressed down to the bottom 32. At the same time, the hydraulic cylinder 14 is axially extended to rotate the guide scraper 18 by 200927907 and press it down to a slag guide 34. Next, the entire set of door frame machine 4 is withdrawn from the hearth 30 to simultaneously remove the collapse of the bottom 32 and the slag guide 34 (not shown). According to the above description, it is known that the bottom of the bottom scraper is pressed to the bottom of the furnace by the top action of the scraper frame. However, while the scraper frame is moved up and down several times to clear the frame, the bottom scraper is scraped. Each time the frame rises, it will hit the bottom of the furnace, which will cause damage to the bottom of the furnace and the cleaning mechanism of the bottom of the furnace. Furthermore, the action of pressing the bottom scraper to the bottom of the furnace is accomplished by topping the scraper holder and positioning it to a suitable position, but this positioning is not easily achieved. SUMMARY OF THE INVENTION In view of the above, in order to solve the above problems, the main object of the present invention is to provide a bottom cleaning mechanism for improving the problem that a conventional bottom cleaning mechanism can damage a furnace bottom and a mechanism body. In order to achieve the above object, the present invention provides a furnace bottom cleaning mechanism which is disposed at the bottom of a clearing frame machine of a coke oven and a light guide car for removing the residual oil in the door of the coke oven after the push coke is removed. The bottom of the slag. The bottom cleaning mechanism of the present invention comprises a link mechanism, a guide squeegee, a bottom squeegee and a guide groove. The link mechanism includes a first link, a second link, a third link, a fourth link and a fifth link, and the first link, the second link, and the third The connecting rod, the fourth connecting rod and the fifth connecting rod are sequentially connected. The guide squeegee is disposed at one end of the fifth link for scraping off the fire on the steering wheel of the 2009. The bottom scraper is disposed at one end of the first link. When the fifth link drives the guide scraper to move relative to the slag guide, the bottom scraper on the first link is simultaneously moved relative to the bottom of the furnace. The guide groove is disposed above the fourth link, and one end of the third link is coupled to the guide groove and slidable on the guide groove. The bottom cleaning mechanism of the present invention comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod and a hydraulic cylinder. ® One of the first links is rotatably attached to one of the heat shields of the door frame and the other end is provided with a bottom scraper. One end of the second link is coupled to drive the first link to generate a rotational displacement. One end of the third link is rotatably coupled to the upper portion of the heat shield, and the other end of the second link is rotatably coupled to a point on the third link. One end of the fourth link has a guide groove, and the other end of the third link is coupled to the guide groove and slidable on the guide groove. One end of the fifth link is rotatably connected to the door frame machine, and the other end is provided with a guide squeegee for scraping off the slag on the furnace. One end of the hydraulic cylinder is fixed to the clear frame machine, and the other end is connected to the other end of the fifth link and the fourth link, and the axial expansion and contraction of the hydraulic cylinder drives the fifth link to generate a rotational displacement. And when the fifth link drives the guide scraper to move relative to the slag guide, the bottom scraper on the first link is simultaneously moved relative to the bottom of the furnace. The bottom cleaning mechanism of the present invention can use the hydraulic cylinder of the 200927907 guide disc scraper to cooperate with the linkage mechanism to lift the bottom scraper when performing the clearing frame operation, and after the cleaning frame is completed, the linkage mechanism is utilized. In combination with gravity, the bottom scraper is pressed down to contact the bottom of the furnace to remove the furnace remaining in the bottom of the furnace near the coke oven door after the push of the coke; therefore, the bottom cleaning mechanism of the present invention does not require additional power. In addition, compared with the prior art, the bottom cleaning mechanism of the present invention has no interlocking relationship with the action of the lower door frame on the upper side of the tool holder, so that it can be avoided that the bottom plate scraper is damaged by the upper and lower frame operations. The problem of the bottom body and the bottom cleaning mechanism of the present invention is that the bottom scraper of the present invention is stopped when it touches the bottom of the furnace, so there is no problem of positioning adjustment. [Embodiment] In order to further understand the object, structural features and functions of the present invention, the following detailed description will be made with reference to the related embodiments and drawings: FIG. 5 is a bottom cleaning of a preferred embodiment of the present invention. Institutional. Not intended. The bottom cleaning mechanism 40 of the preferred embodiment of the present invention is disposed at the bottom of the "clearing and guiding vehicle" of the 〇 coke oven, and is used to remove the residual furnace at the door of the coke oven after the push coke is removed. The slag of the bottom 46 (not shown). The bottom cleaning mechanism 40 of the preferred embodiment of the present invention includes a first connecting rod 48, a second connecting rod 5G, a third connecting rod 52, a fourth connecting cup 54 and a fifth connecting rod 56. The link mechanism, a guide squeegee%, a bottom squeegee 6G and a guide groove 62. The first link 48, the second link 10 5, the second link 52, the fourth link 54 and the fifth link 56 are sequentially connected as 200927907. The guide squeegee 58 is disposed at the upper side end of the fifth link 56 for scraping off the slag on a slag guide 64. The bottom scraper 60 is disposed at the left end of the first link 48. When the fifth link 56 drives the guide squeegee 58 to move relative to the slag guide 64, the furnace on the first link 48 can be driven at the same time. The bottom scraper 60 moves relative to the hearth 46. The guide groove 62 is disposed above the fourth link 54, and the right end of the third link 52 is coupled to the guide groove 62 and slidable on the guide groove 62. The clearing frame machine 42 of the preferred embodiment of the present invention has a heat insulating plate 66. The first connecting rod 48 is rotatably coupled to the lower end of the bottom plate scraper 60 and is connected below the heat insulating plate 66, and the third connecting rod The left end of the 52 away from the guide groove 62 is rotatably coupled to the heat shield 66. The upper end of the second link 50 is rotatably coupled to a point on the third link 52, and the lower end is rotatably coupled to the first link 48, and the first link 48 can be driven to generate a Turn the bit. Move. In addition, the link mechanism further includes an axially extendable hydraulic cylinder 68, wherein the upper end is fixed to the cleaning frame machine 42 and the lower end is coupled to the fifth link 56 by the axial direction of the hydraulic cylinder 68. The telescopic movement can drive the fifth link 56 to generate a rotational displacement. In addition, the lower end of the fourth link 54 away from the guide groove 62 is also connected to the lower end of the hydraulic cylinder 68 and the fifth link 56. The axial expansion and contraction of the hydraulic cylinder 68 can sequentially link the fourth connection. The rod 54, the third link 52, the second link 50 and the first link 48 are such that the hearth scraper 60 disposed at the left end of the first link 48 is movable relative to the hearth 46. 200927907 Please refer to FIG. 6 to FIG. 8 , which are schematic diagrams showing the operation flow of the furnace bottom cleaning mechanism according to a preferred embodiment of the present invention. First, referring to Fig. 6, one of the cleaning frame machines 42 enters the hearth 72 of a coke oven. At this time, the hydraulic cylinder 68 is axially retracted, and the fifth link 56 is driven to be rotated and retracted, so that the disc scraper 58 disposed at the upper end of the fifth link 56 is relatively far away from the slag guide 64, and at the same time By the linkage of the fourth link 54, the third link 52, the second link 50 and the first link 48, the bottom scraping plate 60 disposed at the left end of the first link 48 is also lifted and relatively far away. Furnace bottom 46. Because the bottom cleaning mechanism 40 of the present invention has no interlocking relationship with the lower cleaning door frame on the doctor blade holder 70, when the blade holder 70 drives the plurality of side scrapers 74 to move up and down to perform the clearing frame operation, the bottom scraper 60 is fixed. Lift up without hitting the bottom 46. Referring to FIG. 7, after the clearing frame is completed, the hydraulic cylinder 68 is axially extended to drive the fifth link 56 to rotate, so that the guide scraper 58 disposed at the left end of the fifth link 56 is relatively close to the slag guide 64. Until it is pressed down to the slag® guide 64, in order to facilitate subsequent scraping of the slag (not shown) on the slag guide 64. At the same time, by the linkage of the fourth link 54, the third link 52, the second link 50 and the first link 48, the bottom scraper 60 disposed at the left end of the first link 48 is no longer lifted. And because of its own gravity, it is relatively close to the bottom 46, and when the hydraulic cylinder 68 is axially extended and the fourth link 54 is moved downward, the right end of the third link 52 connecting the guide groove 62 is scraped by the bottom of the furnace. The gravity of the plate 60 acts on the guide groove 62 along the fourth link 54 while moving downwards 11 200927907, and when the bottom scraper 60 touches the bottom 46 and the gravity is released, the third link 52 is connected. The right end of the guide groove 62 is no longer sliding downward. Referring to FIG. 8, after the guide plate scraper 58 and the bottom scraper 60 respectively touch the slag guide 64 and the bottom 46, the clear frame machine 42 is relatively far away from the hearth 72 of the coke oven, and is driven. The disc scraper 58 and the bottom scraper 60 scrape off the slag guide 64 and the slag (not shown) on the bottom 46, respectively. It should be noted that the hydraulic cylinder 68 is continuously extended to follow the movement of the cleaning frame machine 42 to drive the fifth link 56 to rotate, so that the disc scraper 58 disposed on the fifth link 56 can be continuously pressed. To the slag guide 64, while the hydraulic cylinder 68 is axially extended and the fourth link 54 is moved downward, the fourth link 54 can be connected to the third link 52 via the guide groove 62. In the case of the right end of 62, it continues to move downward. Compared with the prior art, the bottom cleaning mechanism of the present invention has the following features: ❹ (1) The bottom cleaning mechanism of the present invention can perform the cleaning of the door frame by the hydraulic disk of the guide plate to the plate. Cooperating with the linkage mechanism to lift the bottom scraper, and after the clearing frame is completed, the linkage mechanism is used to cooperate with the gravity to make the bottom scraper press down to contact the bottom of the furnace to remove the residual focus on the bottom of the furnace near the coke oven door. Furnace fishing, therefore, the bottom cleaning mechanism of the present invention does not require additional power. (2) The bottom cleaning mechanism of the present invention and the lowering of the frame on the scraper frame have no 12 200927907 interlocking relationship, so that it is possible to avoid the damage of the bottom of the bottom and the bottom of the cleaning mechanism by the bottom scraper due to the action of the upper and lower clearing frames. The problem. (3) The bottom scraper of the present invention is stopped when it touches the bottom of the furnace, so that there is no problem of conventional positioning adjustment. While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and the equivalent of the modification and retouching of the present invention is still within the spirit and scope of the present invention. Within the scope of patent protection of this document. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a conventional furnace bottom cleaning mechanism; FIG. 2 to FIG. 4 are schematic diagrams showing the operation of a furnace bottom cleaning mechanism; FIG. 5 is a schematic view of a furnace bottom cleaning mechanism according to a preferred embodiment of the present invention; 6 to 8 are schematic views showing the operation flow of the bottom cleaning mechanism of the preferred embodiment of the present invention. [Main component symbol description] 2 Conventional bottom cleaning mechanism 4 Clear door frame machine 6 First link 8 Second link 10 Third link 13 200927907 12 Fourth link 14 hydraulic cylinder 16 Bottom scraper 18 guide Disk scraper 20 Heat shield 22 Blade holder 24 Scraper® 26 jacks 28 Base 30 Hearth 32 Bottom 34 Slag guide plate 40 Bottom cleaning mechanism 42 Clear door frame machine 46 46 Bottom 48 First link 50 Two links 52 third link 54 fourth link 56 fifth link 58 guide plate scraper 200927907 60 bottom scraper 62 guide groove 64 slag guide plate 6 6 heat shield 6 8 hydraulic cylinder 70 scraper holder 72 Hearth scraper ❹ 74