M338923 八、新型說明： 【新型所屬之技術領域】 本創作係提供一 術上提供一種零件更 、更具市場競爭力之 【先前技術】 種液壓紅之緩衝控油結構，尤指其技 簡省、組裝維護容易、成本大幅降低 緩衝控油結構。M338923 VIII. New Description: 【New Technology Fields】 This creation department provides a hydraulic and red buffer control structure for the parts that are more competitive in the market, especially for its technical simplicity. It is easy to assemble and maintain, and the cost is greatly reduced.
該液壓缸緩衝控油結構 的作用，進而達到防止活塞 保護效果。 之目的在於使活塞頭 頭直接與帽蓋發生較 具有減速 大衝擊之 習用之申請案號第9 〇 2 〇 7 7 1 R，「 乙说「液爆古山 行程緩衝結構改良，並去 」 其雖可達到緩衝效果，彳Η仍呈古+ 下缺失·· 1 一仍具有如 1 .柱塞需作精密車削加工，其精密車削加工相當不 易，不僅增加工時，而且增加成本。 止2敕不具拆換維修功能：其直接於帽蓋上設針閥與逆 ㈣正體結構上並無簡便可快速拆裝之設計，以致拆換 維修上較為困難。 、 t用之申請案號第8 7 丄1 5 Θ 8 5虎「液壓致動器 之凌衝控油裝置」’其雖然可達到緩衝控油功纟，但其結 構之構件相當多，#間之結合關係均需精密，造成加工組 衣之困難’而且成本増加’也增其損壞之機率。 習用之美國專利第4721130號案，其為一種結 構閥的液壓緩衝梦署 、 、友衝衣置主要猎由彈簧壓迫膜片，進而控制 液體通過I，η ;^、丄 達抆油的目的，惟其膜片會有彈性疲乏而 5 M338923 控油不確實，及 與本案不相同。’、乃曰有碰揎的問題發生，而其目的上也 -種更具理想J亡述習知結構所存在之問題點，如何開發 亦係相關業：須努結構，實消費者所殷切企盼， 有鐘於此4=之9標及方向。 盥执斗人 本於多年從事相關產品之製造開發 興叹计經驗，針對上 炊彡曰 ^ 义之目^，詳加設計與審慎評估後， 、、.；侍一確具實用性之本創作。 【新型内容】 Λ解决之技術問題點：習知技術如液壓致動器之缓衝 :油裝置’其柱塞需作精密車削加工，其精密車削加工相 田:易，不僅增加工時，而且增加成本。且其直接於帽蓋 ▲又針閥與逆止閥’整體結構上並無簡便可快速拆裝之設 以致拆換維修上較為困難。而其它習知緩衝控油裝置 ，則有構造複雜的問題，造成組裝維修困難及故障率高與 成本增加之缺失。 解決問題之技術特點：提供一種液壓缸之緩衝控油結 構，係包括一殼部設各接口，一第二擋部抵於殼部内之異 ;進油口端，一第一擔部抵於殼部内之進油口端，並第一 擔部擋住殼部進油口及出油口，該第—擋部設有通孔及通 孔前側設有一呈開放式之第一容室，通孔為組裝於第一容 室内之止逆密封件封止，使進油向液壓無法推開止逆密封 件，一彈性元件設於第二擋部與第一擋部間，據此緩衝時 油壓推開第一擋部而由出油口進入緩衝空間，而回油時得 6 M338923 由回油口推開止逆密封件，再由進油口進入液壓缸，、 零件簡省、組裝維護容易、成本大 ，達 十八I田I牛低、具市場 、故障率低及壽命延長者。 兄肀 對照先前技術之功效： 1·零件簡省：先前技術使用至少六個零件 件之構造都相當複雜，而本創作σ㊆加 "乍/、而五個零件，而复焚 並具有規格品，只需直接購用，而 /、々 他孓件也可經 的沖、壓或簡單車製成型，且構造簡單。 9 2 .組裝維護容易：前案零件多 7 複雜，所以组奘 為困^維護更新自然不易。本案零件少且規格品多: 以相§谷易組裝拆換，維護自然容易。 3 ·成本大幅降低：只要辦 要增加個加工過程，都會 加加工費用，而且精度要求 > A 、w用更鬲，因為前 組合關係都很重要，所以精度 ^ ^ 谓度要求夕’自然產品的成本 *向。而本案創作結構簡單， 田,^ 夕祝年〇 〇〇，直接買現成 ，成本大幅下降，且本創作精 成本壓低。 積度要求點較少，自然可 4 ·更具市場競爭力：因為本案之成本低，所以在 =閏需求下，售價也可大幅壓低，買的…多，所 具市場競爭力。 …、’ 5 ·故障率低：油的内 夢“… p如果有雜質，但是因為前 精度要求咼，所以稍有卡 陸,θ 卡阻情形就會造成動作不確實或 障’但疋本案的精度要求 . 所以自然會被阻卡的機會 減少，所以自然故障情形難以發生。 到 力 零 件 tm 早 較 所 增 案 相 來 使 相 以 案 故 大 7 M338923 k 6 ·壽命得以 ，所以與前案比較 作，壽命自然較前 有關本創作所 佳實施例並配合圖 的、構造及特徵， '【實施方式】 - 參閱第一圖所 •示圖，該液壓缸（ 内設端部具有突伸 並於缸體（1 1 ) )端面具有一與柱 該凹室（1 4 1 ) 連通外部液壓源。 1 )時產生減速作 0 設一緩衝控油結構 有一進油口 （ 2 1 、3 )之接口，該進 _塞頭（1 3 )與帽 2 )及回油口 （ 2 參閱第二圖所 液壓缸之緩衝控油 一殼部（2 0 延長··因為本創作之故障情形難以發 ，前案已不堪使用時，本案仍可正常 案延長。 採用之技術、手段及其功效，茲舉一 式詳細說明於后，相信本創作上述之 當可由之得一深入而具體的瞭解。 示，係液壓缸裝設有緩衝控油結構之 1 0 )之基本結構，係於缸體（1 1 直形柱塞（1 2 )之活塞頭（1 3 ) 端部設有帽蓋（1 4 )，該帽蓋（1 塞（12 )相配合之凹室（141) 設有一通孔（1 5 )，該通孔（1 5 其主要該柱塞（1 2)進入凹室（1 用。該帽蓋（1 4)之上設有一容室 (20)，該緩衝控油結構（2 0 ) )、一出油口 （ 2 2 )及一回油口 （ 油口（21)連通液壓缸（10)之 蓋（1 4 )間之空間，而該出油口 （ 3)連通凹室（141)空間。 示，係本創作之其一實施例剖示圖， 結構，其緩衝控油結構（2 0 )係包 1 )，該殼部（2 0 1 )上設有一進 生 操 較 § 剖 ) 4 ) 4 裝 設 2 活 2 該 括 油 8 M338923 • 口 （21)、一 出油口 （22)及一回油口 （23)，該 進油口 （21)連通至液壓缸（10)(如第一圖所示） ，該出油口 （ 2 2 )及回油口 （ 2 3 )連通液壓源； 一第二擋部（2 4 )，該第二擋部（2 4 )抵於殼部 (2 0 1 )内之異於進油口 （ 2 1 )端； 一第一擋部（25)，該第一擋部（25)抵於殼部 (201)内之進油口 （21)端，並第一擋部（25) ~擋住殼部（2 0 1 )進油口 （ 2 1 )及出油口 （ 2 2 )， ® 該第一擋部（25)設有通孔（251)及通孔（251 )前側設有一呈開放式之第一容室（2 6 )，通孔（2 5 1)為組裝於第一容室（26)内之止逆密封件（27) 封止，使之由進油口 （ 2 1 )進入之進油向液壓無法推開 止逆密封件（27);及， 一彈性元件（2 8 )，該彈性元件（2 8 )設於第二 擋部（2 4 )與第一擋部（2 5 )間，彈性元件（2 8 ) φ 迫抵第一擋部（2 5 )阻絕進油口 （ 2 1 )通路。 該第二擋部（2 4 )連結有調整座（2 4 1 )，該調 -整座（2 4 1 )凸出於殼部（2 0 1 )之外部，殼部（2 .0 1 )設螺孔（2 0 2 )，而調整座（2 4 1 )設螺紋（ 2 4 2 )，調整座（2 4 1 )調轉螺動得以改變第二擋部 (2 4 )位置及改變彈性元件（2 8 )壓力。 該止逆密封件（2 7 )為彈性元件（2 7 1 )迫抵鋼 珠（2 7 2 )所構成。 參閱第一、第三圖所示，本創作之緩衝作用，係當活 9 M338923 .塞頭（1 3 )(如第一圖所示）朝帽蓋（1 4 )移動至柱 塞（12)進入帽蓋（14)之凹室（141)，此時因 流道突然縮減而使活塞頭（1 3 )與帽蓋（1 4 )之間的 壓力升高，產生阻力而使活塞頭（1 3 )減速，這是初步 減速效果，而此同時，其壓力仍持續升高，待其壓力大於 緩衝控油結構（2 0 )設定壓力時，其油壓會將進油口 （ '2 1 )第一擔部（2 5 )推動，此時進油口 （ 2 1 )與出 油口 （ 2 2 )乃導通，而使得液壓油可由出油口 （ 2 2 ) 排出，此時緩衝控油結構（2 0 )即達到緩衝及控油調壓 之作用，可使活塞頭（1 3 )與帽蓋（1 4 )之間的壓力 近似穩定地維持在推開第一擋部（2 5 )之壓力，而達到 使活塞頭（1 3 )具等減速之功效。 另一方面，該推開第一擋部（2 5 )之壓力是可以調 整的，即藉由調整座（2 4 1 )之螺動調整第二擋部（2 4 )位置，就會改變彈性元件（2 8 )之頂推力，也就改 • 變了推開第一擋部（2 5 )之壓力。 再者，當推開第一擋部（2 5 )之壓力消失，則彈性 -元件（2 8 )立即將第一擋部（2 5 )推復原位，並使第 _ 一擋部（2 5 )封擋進油口 （ 2 1 )及出油口 （ 2 2 )。 參閱第一、第四圖所示，本創作之回油作用，係當活 塞頭（1 3 )到行程終點，而要進行反向行程時，液壓油 由帽蓋（1 4 )之通孔（1 5 )流入凹室（1 4 1 )，再 由回油口 （ 2 3 )進入至緩衝控油結構（2 0 )之内部空 間，回油壓力乃得以推開止逆密封件（2 7 )之鋼珠（2 10The hydraulic cylinder buffers the function of the oil control structure to prevent the piston from protecting. The purpose of the application is to make the head of the piston directly and the cap more difficult to use. The application number is 9 〇2 〇7 7 1 R," B said "the liquid explosion Gushan stroke buffer structure is improved, and go" The buffering effect is achieved, and the crucible is still missing in the ancient +. 1 1 still has the same as 1. The plunger needs to be precision turning, and its precision turning is quite difficult, which not only increases the working hours, but also increases the cost. It does not have the function of dismantling and repairing: it has a needle valve directly on the cap and the reverse (four) normal body structure has no simple and quick disassembly design, which makes it difficult to replace and repair. Application No. 8 7 丄1 5 Θ 8 5 Tiger "Hydraulic Actuator's Lingchong Oil Control Device"' Although it can achieve buffer control and oil control, its structure is quite a number of components. The relationship needs to be precise, which makes it difficult to process the garments 'and the cost increases' also increases the chance of damage. U.S. Patent No. 4,721,130, which is a hydraulic buffering system for a structural valve, and a friend of the company, which is mainly used to control the passage of liquid through I, η; ^, 丄 抆 oil, However, the diaphragm will be elastic and fatigued. The 5 M338923 oil control is not correct and is not the same as this case. ', Nai, there are problems with the encounter, and its purpose is also a problem with the ideals of the J-speaking structure, how to develop is also related to the industry: the structure of the need, the real consumer is eagerly awaiting , There are clocks in this 4 = 9 mark and direction.盥 盥 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本. [New content] 技术Resolved technical problems: conventional technology such as hydraulic actuator buffer: oil device 'its plunger needs to be precision turning, its precision turning processing phase: easy, not only increase working hours, but also increase cost. Moreover, it is directly on the cap ▲ and the needle valve and the check valve are not simple and quick to disassemble, so that it is difficult to replace and repair. However, other conventional buffer oil control devices have complicated structural problems, resulting in difficulty in assembly and maintenance, high failure rate, and lack of cost. Technical feature of solving the problem: providing a buffer oil control structure of a hydraulic cylinder, comprising a shell portion providing each interface, a second blocking portion is different from the inside of the shell portion; at the oil inlet end, a first shoulder portion is in the shell portion The inlet end of the oil inlet end, and the first support portion blocks the inlet port and the oil outlet of the shell portion, the first block portion is provided with a through hole and the front side of the through hole is provided with an open first chamber, and the through hole is assembled The back seal is sealed in the first chamber, so that the oil is unable to push the check seal to the hydraulic pressure, and an elastic member is disposed between the second block and the first block, and the oil pressure is pushed away according to the buffering. The first stop part enters the buffer space by the oil outlet, and when returning the oil, 6 M338923 pushes the check seal from the oil return port, and then enters the hydraulic cylinder from the oil inlet port, the parts are simple, the assembly and maintenance are easy, and the cost Large, up to 18 I Tian I cattle low, with market, low failure rate and longevity. The brothers and sisters compare the effects of the prior art: 1. The simple parts of the parts: the construction of at least six parts using the prior art is quite complicated, and the creation of the sigma seven plus " 乍 /, and five parts, and re-burning and have specifications It can be purchased directly, and /, it can also be made by punching, pressing or simple car, and the structure is simple. 9 2. Easy assembly and maintenance: the parts in the previous case are more complicated, so the group is difficult to maintain. There are few parts in this case and there are many specifications: It is easy to assemble and replace with §谷易. 3 · The cost is greatly reduced: as long as the processing is increased, the processing cost will be added, and the accuracy requirement > A, w will be more ambiguous, because the pre-combination relationship is very important, so the precision ^ ^ predicate requires 夕 'natural products Cost*. The creation structure of this case is simple, Tian, ^ 夕 〇 〇 〇〇, direct purchase ready-made, the cost has dropped significantly, and the cost of this creation is low. There are fewer requirements for the accumulation, and it is natural. 4 · More market competitiveness: Because the cost of this case is low, the price can be greatly reduced under the demand of =闰, and many of them are purchased, which is competitive in the market. ..., ' 5 · Low failure rate: the inner dream of oil "... p If there is impurity, but because the accuracy of the previous requirements is 咼, so there is a slight stagnation, θ jamming will cause the action is not correct or obstacles' but in this case Accuracy requirements. Therefore, the chance of being blocked is naturally reduced, so the natural fault situation is difficult to occur. The force part tm is earlier than the added case to make the phase larger than the case. 7 M338923 k 6 · Life is available, so compared with the previous case The life is naturally better than the previous embodiment of the creation and the structure, structure and characteristics of the creation, '[Embodiment] - Refer to the diagram of the first diagram, the hydraulic cylinder (the inner end has a protruding end and The end face of the cylinder (1 1 ) has an external hydraulic source connected to the recess (1 4 1 ) of the column. 1) Deceleration is generated as 0. A buffer oil control structure has an inlet port (2 1 , 3 ), The inlet _ plug head (1 3) and the cap 2) and the oil return port (2 refer to the buffer of the hydraulic cylinder of the second figure to control the oil-shell part (2 0 extension··Because the fault situation of this creation is difficult to send, the previous case has When it is unbearable, the case can still be extended in normal cases. The techniques, means and their effects are described in detail. I believe that the above-mentioned work of this creation can be obtained from an in-depth and specific understanding. It shows that the hydraulic cylinder is equipped with a buffer oil control structure. The structure is attached to the cylinder body (the piston head (13) of the 1 1 straight plunger (1 2 ) is provided with a cap (1 4 ), and the cap (1 plug (12) is matched with the alcove ( 141) a through hole (15) is provided, and the through hole (15) mainly enters the recess (1). The cap (14) is provided with a chamber (20). The buffer oil control structure (20), an oil outlet (2 2 ) and a return port (the oil port (21) communicates with a space between the cover (14) of the hydraulic cylinder (10), and the oil outlet (3) Connecting the alcove (141) space. Shown as a cross-sectional view of an embodiment of the present invention, the structure, the buffer oil control structure (20) is a package 1), and the shell portion (2 0 1 ) is provided There is a raw operation compared to § section) 4) 4 Installation 2 Live 2 The oil 8 M338923 • Port (21), an oil outlet (22) and a return port (23), the oil inlet (21) Connected to the hydraulic cylinder (10) (such as the first Shown), the oil outlet (2 2 ) and the oil return port (23) communicate with the hydraulic source; a second blocking portion (2 4 ), the second blocking portion (2 4 ) abuts the shell portion (2 0 1) is different from the oil inlet (2 1 ) end; a first blocking portion (25), the first blocking portion (25) abuts the oil inlet (21) end in the shell portion (201), and The first blocking portion (25) - blocks the inlet portion (2 0 1 ) of the oil inlet (2 1 ) and the oil outlet (2 2 ), and the first blocking portion (25) is provided with a through hole (251) and a through hole The first side of the hole (251) is provided with an open first chamber (26), and the through hole (251) is sealed by a check seal (27) assembled in the first chamber (26). The oil entering from the oil inlet (2 1 ) cannot push the check seal (27) to the hydraulic pressure; and, an elastic member (28), the elastic member (28) is disposed at the second stop ( 2 4) Between the first blocking portion (25), the elastic member (28) φ urges the first blocking portion (2 5) to block the inlet port (2 1 ) passage. The second blocking portion (2 4 ) is coupled with an adjusting seat (2 4 1 ) protruding from the outside of the shell portion (2 0 1 ), and the shell portion (2.01) Set the screw hole (2 0 2 ), and adjust the seat (2 4 1 ) to set the thread ( 2 4 2 ). The adjustment seat (2 4 1 ) adjusts the rotation to change the position of the second stop (2 4 ) and change the elastic element. (2 8) Pressure. The check seal (27) is formed by the elastic element (2 7 1 ) pressing against the steel ball (272). Referring to the first and third figures, the cushioning effect of this creation is to move the 9 M338923. The plug (1 3 ) (as shown in the first figure) moves toward the cap (1 4 ) to the plunger (12). Entering the recess (141) of the cap (14), the pressure between the piston head (13) and the cap (14) is increased due to the sudden reduction of the flow passage, and the piston head is generated (1). 3) Deceleration, which is the initial deceleration effect, and at the same time, its pressure continues to rise. When the pressure is greater than the set pressure of the buffer oil control structure (20), the oil pressure will be the inlet port ('2 1). The support portion (2 5 ) is pushed, and the oil inlet port ( 2 1 ) and the oil outlet port ( 2 2 ) are turned on, so that the hydraulic oil can be discharged from the oil outlet port (2 2 ), and the buffer oil control structure is at this time (2) 0) that the buffering and oil control and pressure regulation are achieved, so that the pressure between the piston head (13) and the cap (14) can be stably maintained at the pressure of pushing the first blocking portion (25). The effect of decelerating the piston head (13) is achieved. On the other hand, the pressure of pushing the first blocking portion (25) can be adjusted, that is, the position of the second blocking portion (2 4 ) is adjusted by the screwing of the adjusting seat (2 4 1 ), and the elasticity is changed. The top thrust of the component (28) also changes the pressure of pushing the first stop (25). Furthermore, when the pressure of pushing the first blocking portion (2 5 ) disappears, the elastic element (28) immediately pushes the first blocking portion (25) back into position, and the first blocking portion (2 5) ) Block the oil inlet ( 2 1 ) and the oil outlet ( 2 2 ). Referring to the first and fourth figures, the oil return function of this creation is that when the piston head (13) reaches the end of the stroke, and the reverse stroke is to be made, the hydraulic oil is passed through the through hole of the cap (1 4) ( 1 5) flows into the alcove (1 4 1 ), and then enters the inner space of the buffer oil control structure (20) through the oil return port (23), and the oil return pressure is pushed to open the check seal (2 7). Steel ball (2 10
M338923 、7 2 )，並使液壓油經通孔（2 5丄）、進油口（ -而進入至活塞，（1 3 )與帽蓋（1 4 )間之空間 推動活塞頭（1 3 )移動使之反向進給。 另者，回油壓力消失則止逆密封件（2 7 )之 件（2 7 1 ) X將鋼玉朱（2 7 2 )推復原位密封通 5 1 ) ° 一 …了知’本創作具有緩衝控油功效，而 籲作需求零件數少，而且其零件並具有規格品，只需 用而，、他零件也可經由簡單的沖、壓或簡單車製 且構造簡單。 本案零件少且規格品多，所以相當 換，維護自然容易。 又者，本案創作結構簡單，且多規格品，直 來用，成本大幅下敗 丄 下降’且本創作精度要求點較少 使成本壓低。且因炎^ 為本案之成本低，所以在相同 下’售價也可* 「 力。 幅壓低，買的人自然多，所以具 高，所以 I…雜質’但是因為甫 本索 且情形就會造成動作不確實^ 本案的精唐 所以自 '，所以自然會被阻卡的機^ 所以自然故障情 以發生，戶“:…。且因為本創作4 正常操作，案比較1案已不堪使用, 、， ^ °'ρ然較前案延長。M338923, 7 2 ), and push the hydraulic oil through the through hole (25 丄), the oil inlet (- and enter the space between the piston, (1 3) and the cap (1 4) to push the piston head (1 3 ) Move to reverse feed. In addition, if the oil return pressure disappears, the reverse seal (2 7 ) (2 7 1 ) X pushes the steel jade (2 7 2 ) to the position seal 5 1 ° ° ... knows that this creation has the function of buffering and controlling oil, and the number of parts required for the demand is small, and the parts have specifications, and the parts can be used only by simple punching, pressing or simple car, and the structure is simple. . In this case, there are few parts and many specifications, so it is quite easy to change and maintain. Moreover, the creation structure of this case is simple, and the multi-standard products are used directly, and the cost is greatly reduced. 下降 Decrease' and the accuracy of the creation requires less points, which makes the cost lower. And because the cost of the case is low, so the price can also be *" in the same price. The pressure is low, the person who buys is naturally, so it is high, so I...impurity' but because of the situation The action is not correct ^ The Jing Tang of the case is so self-, so it will naturally be blocked by the machine ^ So the natural fault occurs, the household ":.... And because of the normal operation of this creation 4, the case comparison case has been unusable, and ^ °' is more prolonged than the previous case.
丽文係針對太A 創作之較佳實施例為本 2 1) ，進而 彈性元 孔（2 且本創 直接講 成型， 組裝拆 貝現成 自然可 潤需求 場競爭 度要求 ，但是 減少， 情形難 案仍可 創作之技術特徵 M338923 士當可在不脫離 與修改，而該等 圍所界定之範疇 進行具體之說明；惟，熟悉此項技術之人 本創作之精神與原則下對本創作進行變更 變更與修改，皆應涵蓋於如下申請專利範 中。 【圖式簡單說明】 第一圖··係本創作之其一實施例液壓缸之 J qIJ m 第二圖：係本創作之其一實施例緩衝控油社構之β 。 第三圖：係、本創作之其-實施例緩衝控油動作八示圖。 圖。 π思之剖示 係本創作之其一實施例回油動作立 小思之剖 第四圖 【主要元件符號說明】 (1 0 )液壓紅 (1 2 )桂塞 (1 4 )帽蓋 (1 5 )通孔 (2 0 1 )殼部 (21)進油口 (2 3 )回油口 (241)調整座 (25)第一擋部 (2 6 )第一容室 (2 7 1 )彈性元件 (2 8 )彈性元件 (1 1 )缸體 (1 3 )活塞頭 (1 4 1 )凹室 (2 0 )緩衝控油結構 (2 0 2 )螺孔 (2 2 )出油口 (24)第二擋部 (2 4 2 )螺敌 (2 5 1 )通孔 (2 7 )止逆密封件 (2 7 2 )鋼珠 圖 12The preferred embodiment of the Liwen Department for Tai A is 2 1), and then the elastic element hole (2 and this is directly molded, the assembly and demolition is ready for natural demand, but the reduction is difficult. Technical features that can still be created M338923 can be described in the scope defined by these enclosures without departing from the amendments; however, those who are familiar with the technology can make changes to the creation under the spirit and principles of this creation. Modifications should be covered in the following patent application. [Simplified description of the drawings] The first figure is an example of a hydraulic cylinder of the present invention. J qIJ m The second figure is a buffer of one embodiment of the present creation. The oil control society's β. The third picture: the system, the creation of the present - the embodiment of the buffer oil control action eight diagram. Figure π thinking of the embodiment of this creation of the oil return action Li Xiaosi section Four figures [Description of main component symbols] (1 0) Hydraulic red (1 2 ) Guisai (1 4) Cap (1 5 ) Through hole (2 0 1 ) Shell (21) Oil inlet (2 3 ) Oil port (241) adjustment seat (25) first stop (26) first chamber (2 7 1) bomb Element (2 8) Elastic element (1 1 ) Cylinder (1 3 ) Piston head (1 4 1 ) Alcove (2 0 ) Buffer oil control structure (2 0 2 ) Screw hole (2 2 ) Oil outlet (24) Second stop (2 4 2 ) screw (2 5 1 ) through hole (2 7) check seal (2 7 2 ) steel ball Figure 12