CN105179377A - Hydraulic cylinder piston sealing device with deformation preventing and leaked oil storing functions - Google Patents
Hydraulic cylinder piston sealing device with deformation preventing and leaked oil storing functions Download PDFInfo
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- 238000007789 sealing Methods 0.000 title claims abstract description 89
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 239000002893 slag Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 9
- 239000003921 oil Substances 0.000 description 31
- 239000010720 hydraulic oil Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Abstract
本发明提供了一种具有防变形且储漏油的液压缸活塞密封装置，主要包括缸筒、活塞、活塞杆、U型密封圈、梯形密封圈、U型钢环和除渣环，活塞杆头设有轴肩和外螺纹，弹性圈、活塞、弹性垫和锁紧螺母依次安装在活塞杆上。其特点是U型钢环防止U型密封圈变形，且U型密封圈可储漏油。本发明通过U型截面的U型密封圈实现漏油的暂存；通过梯形密封圈和U型钢环分别实现降低U型密封圈变形及防止其变形失效；通过截面为三角圆弧且含大、小凹槽的除渣环，实现防止油渣进入活塞，及暂存漏油和油渣。
The invention provides a hydraulic cylinder piston sealing device with anti-deformation and oil leakage storage, which mainly includes a cylinder barrel, a piston, a piston rod, a U-shaped sealing ring, a trapezoidal sealing ring, a U-shaped steel ring, a slag removal ring, and a piston rod head. A shaft shoulder and an external thread are provided, and an elastic ring, a piston, an elastic pad and a lock nut are sequentially installed on the piston rod. Its characteristic is that the U-shaped steel ring prevents the deformation of the U-shaped sealing ring, and the U-shaped sealing ring can store oil leakage. The present invention realizes the temporary storage of oil leakage through the U-shaped sealing ring of the U-shaped cross-section; through the trapezoidal sealing ring and the U-shaped steel ring, the deformation of the U-shaped sealing ring is reduced and the deformation failure is prevented; The slag removal ring with small grooves prevents oil residue from entering the piston and temporarily stores oil leakage and oil residue.
Description
技术领域 technical field
本发明涉及一种具有防变形且储漏油的液压缸活塞密封装置，尤其涉及一种通过U型截面的U型密封圈实现漏油的暂存，通过梯形密封圈和U型钢环分别实现降低U型密封圈变形及防止其变形失效，通过截面为三角圆弧且含大、小凹槽的除渣环，实现防止油渣进入活塞，及暂存漏油和油渣，属于液压缸密封的技术研发领域。 The invention relates to a hydraulic cylinder piston sealing device with anti-deformation and oil leakage storage, in particular to a U-shaped sealing ring with a U-shaped section to temporarily store oil leakage, and the trapezoidal sealing ring and U-shaped steel ring respectively realize the reduction. The U-shaped sealing ring is deformed and prevented from being deformed and failed. The slag removal ring with a triangular arc in section and large and small grooves is used to prevent oil residue from entering the piston and temporarily store oil leakage and oil residue. It belongs to the hydraulic cylinder seal. technology research and development field.
背景技术 Background technique
液压缸利用活塞的直线往复运动将液压能转变为机械能，但在使用过程中易存在以下问题，一是密封失效，即液压油经活塞由一腔泄漏到另一腔，这种内泄漏会降低液压缸的性能品质；二是液压油内的油渣易进入活塞及缸筒的接触面，磨损活塞表面，引起活塞密封失效及降低活塞的使用寿命。 The hydraulic cylinder uses the linear reciprocating motion of the piston to convert hydraulic energy into mechanical energy, but the following problems are prone to occur during use. First, the seal fails, that is, the hydraulic oil leaks from one cavity to the other through the piston. This internal leakage will reduce The performance quality of the hydraulic cylinder; the second is that the oil residue in the hydraulic oil easily enters the contact surface of the piston and the cylinder barrel, wears the surface of the piston, causes the piston seal to fail and reduces the service life of the piston.
因此，针对现有液压缸在使用中存在的密封失效、油渣磨损等问题，应从液压缸活塞的密封装置上进行综合考虑，设计出密封性好、无油渣磨损的一种活塞密封装置。 Therefore, in view of the problems of seal failure and oil residue wear in existing hydraulic cylinders, comprehensive consideration should be given to the sealing device of the hydraulic cylinder piston, and a piston sealing device with good sealing performance and no oil residue wear should be designed.
发明内容 Contents of the invention
本发明针对现有液压缸在使用中存在的密封失效、油渣磨损等问题，提供了一种可有效解决上述问题的一种具有防变形且储漏油的液压缸活塞密封装置。 The present invention aims at problems such as seal failure and oil residue wear in existing hydraulic cylinders, and provides a hydraulic cylinder piston sealing device capable of preventing deformation and storing oil, which can effectively solve the above problems.
本发明的一种具有防变形且储漏油的液压缸活塞密封装置采用以下技术方案： A hydraulic cylinder piston sealing device with anti-deformation and oil leakage of the present invention adopts the following technical solutions:
一种具有防变形且储漏油的液压缸活塞密封装置，主要包括缸筒、活塞、活塞杆、U型密封圈、梯形密封圈、U型钢环和除渣环，活塞杆头设有轴肩和外螺纹，弹性圈、活塞、弹性垫和锁紧螺母依次安装在活塞杆上；所述U型密封圈的材料为橡胶，U型密封圈为2个且安装在活塞侧圆面上，U型密封圈的截面为U型结构，且其内凹深度为h 1，壁厚为b 1；所述U型钢环的材料为45钢，U型钢环安装在U型密封圈内测，其上端距U型密封圈上端为h 2且h 2=h 1/4，壁厚为b 2且b 2=b 1/3；所述梯形密封圈的材料为橡胶，梯形密封圈为4个且2个为一组安装在U型密封圈的两端上，其高度为h 3且h 3=h 1/8；所述除渣环安装在活塞的前、后两端面上，除渣环的截面为三角圆弧结构，其圆弧半径为R，除渣环外侧端上由内到外依次设有大凹槽和小凹槽。 A hydraulic cylinder piston sealing device with anti-deformation and oil leakage storage, mainly including a cylinder barrel, a piston, a piston rod, a U-shaped sealing ring, a trapezoidal sealing ring, a U-shaped steel ring and a slag removal ring, and the head of the piston rod is provided with a shaft shoulder and external thread, the elastic ring, piston, elastic pad and lock nut are installed on the piston rod in sequence; the material of the U-shaped sealing ring is rubber, and there are 2 U-shaped sealing rings installed on the side of the piston. The section of the U-shaped sealing ring is a U-shaped structure, and its concave depth is h 1 , and the wall thickness is b 1 ; the material of the U-shaped steel ring is 45 steel, and the U-shaped steel ring is installed on the inner side of the U-shaped sealing ring. The distance from the upper end of the U-shaped sealing ring is h 2 and h 2 = h 1 /4, the wall thickness is b 2 and b 2 = b 1 /3; the material of the trapezoidal sealing ring is rubber, and there are 4 trapezoidal sealing rings and 2 One set is installed on both ends of the U-shaped sealing ring, its height is h 3 and h 3 = h 1 /8; the slag removal ring is installed on the front and rear ends of the piston, the cross section of the slag removal ring It is a triangular arc structure with a radius of R , and the outer end of the slag removal ring is provided with large grooves and small grooves from inside to outside.
本发明将U型密封圈设计为截面为U型的结构，通过这种设计实现漏油的暂存，即当有微量液压油经U型密封圈泄漏时，泄漏的液压油会流到U型密封圈的内凹槽内，从而实现漏油的暂存，防止其经活塞泄漏到另一腔内。 In the present invention, the U-shaped sealing ring is designed as a U-shaped structure, and the temporary storage of oil leakage is realized through this design, that is, when a small amount of hydraulic oil leaks through the U-shaped sealing ring, the leaked hydraulic oil will flow to the U-shaped sealing ring. In the inner groove of the sealing ring, the temporary storage of leaked oil is realized, preventing it from leaking into another cavity through the piston.
本发明在U型密封圈内安装U型钢环，通过这种设计防止U型密封圈变形失效，即通过U型钢环的高强度和高刚度，抵抗U型密封圈的变形，防止其密封失效；而将U型钢环高度设计为低于U型密封圈，这种设计可使U型密封圈随活塞运动时可产生微小的变形，通过减少接触面，来降低活塞的运动阻力。 The present invention installs a U-shaped steel ring in the U-shaped sealing ring, and prevents the deformation and failure of the U-shaped sealing ring through this design, that is, through the high strength and high rigidity of the U-shaped steel ring, it resists the deformation of the U-shaped sealing ring and prevents its sealing failure; The height of the U-shaped steel ring is designed to be lower than that of the U-shaped sealing ring. This design can make the U-shaped sealing ring slightly deformed when the piston moves, and reduce the movement resistance of the piston by reducing the contact surface.
本发明在U型密封圈的两端上分别安装梯形密封圈，通过这种设计降低U型密封圈的变形、加强活塞的密封，即通过梯形密封圈和U型密封圈的相互作用，将U型密封圈的压缩变形能以摩擦热能的形式消耗，降低U型密封圈的变形。 In the present invention, trapezoidal sealing rings are respectively installed on both ends of the U-shaped sealing ring. Through this design, the deformation of the U-shaped sealing ring is reduced and the sealing of the piston is strengthened. That is, through the interaction between the trapezoidal sealing ring and the U-shaped sealing ring, the U The compression deformation of the U-shaped sealing ring can be consumed in the form of frictional heat energy, reducing the deformation of the U-shaped sealing ring.
本发明将除渣环设计为截面为三角圆弧且含大、小凹槽的结构，通过这种设计实现活塞运动除渣及暂存漏油，即通过圆弧结构，在减小活塞运动阻力的前提下，又可使缸筒上的油渣沿圆弧流入缸筒内腔，防止油渣进入活塞和缸筒的接触面引起摩擦磨损，此外，大、小凹槽可暂存微小泄漏油和油渣。 In the present invention, the slag removal ring is designed as a triangular arc in cross section and has a structure with large and small grooves. Through this design, the piston moves to remove slag and temporarily store oil leakage, that is, through the arc structure, the piston movement resistance is reduced. Under the premise, the oil residue on the cylinder can flow into the inner cavity of the cylinder along the arc to prevent the oil residue from entering the contact surface between the piston and the cylinder to cause friction and wear. In addition, the large and small grooves can temporarily store small leakage oil and oil residue.
本发明的有益效果是：通过U型截面的U型密封圈实现漏油的暂存；通过梯形密封圈和U型钢环分别实现降低U型密封圈变形及防止其变形失效；通过截面为三角圆弧且含大、小凹槽的除渣环，实现防止油渣进入活塞，及暂存漏油和油渣。 The beneficial effects of the present invention are: the temporary storage of oil leakage is realized through the U-shaped sealing ring of the U-shaped section; the deformation of the U-shaped sealing ring is reduced and the deformation failure is prevented through the trapezoidal sealing ring and the U-shaped steel ring respectively; the cross-section is a triangular circle The slag removal ring with arc and large and small grooves can prevent oil residue from entering the piston and temporarily store oil leakage and oil residue.
附图说明 Description of drawings
图1是本发明的整体结构示意图。 Fig. 1 is a schematic diagram of the overall structure of the present invention.
图2是本发明密封装置的局部放大示意图。 Fig. 2 is a partially enlarged schematic view of the sealing device of the present invention.
图3是本发明除渣环的局部放大示意图。 Fig. 3 is a partially enlarged schematic diagram of the slag removal ring of the present invention.
其中：1、锁紧螺母，2、弹性垫，3、除渣环，4、活塞，5、U型密封圈，6、弹性圈，7、活塞杆，8、梯形密封圈，9、U型钢环，10、大凹槽，11、小凹槽，12、缸筒。 Among them: 1. Lock nut, 2. Elastic pad, 3. Slag removal ring, 4. Piston, 5. U-shaped sealing ring, 6. Elastic ring, 7. Piston rod, 8. Trapezoidal sealing ring, 9. U-shaped steel Ring, 10, large groove, 11, small groove, 12, cylinder barrel.
具体实施方式 Detailed ways
实施例： Example:
如图1所示，本发明的一种具有防变形且储漏油的液压缸活塞密封装置，主要包括缸筒12、活塞4、活塞杆7、U型密封圈5、梯形密封圈8、U型钢环9和除渣环3，活塞杆7头设有轴肩和外螺纹，弹性圈6、活塞4、弹性垫2和锁紧螺母1依次安装在活塞杆7上。 As shown in Figure 1, a hydraulic cylinder piston sealing device with anti-deformation and oil leakage storage of the present invention mainly includes a cylinder barrel 12, a piston 4, a piston rod 7, a U-shaped sealing ring 5, a trapezoidal sealing ring 8, and a U-shaped sealing ring. Steel ring 9 and slag removal ring 3, piston rod 7 are provided with shaft shoulder and external thread, elastic ring 6, piston 4, elastic pad 2 and lock nut 1 are installed on the piston rod 7 in sequence.
结合图2所示，U型密封圈5的材料为橡胶，U型密封圈5为2个且安装在活塞4侧圆面上，U型密封圈5的截面为U型结构，且其内凹深度为h 1，壁厚为b 1。工作时，这种设计实现漏油的暂存，即当有微量液压油经U型密封圈5泄漏时，泄漏的液压油会流到U型密封圈5的内凹槽内，从而实现漏油的暂存，防止其经活塞4泄漏到另一腔内。 As shown in Figure 2, the material of the U-shaped sealing ring 5 is rubber, and there are two U-shaped sealing rings 5 installed on the side circular surface of the piston 4. The cross-section of the U-shaped sealing ring 5 is a U-shaped structure, and its concave The depth is h 1 and the wall thickness is b 1 . When working, this design realizes the temporary storage of oil leakage, that is, when a small amount of hydraulic oil leaks through the U-shaped sealing ring 5, the leaked hydraulic oil will flow into the inner groove of the U-shaped sealing ring 5, thereby realizing oil leakage. Temporary storage to prevent it from leaking into another cavity through the piston 4.
U型钢环9的材料为45钢，U型钢环9安装在U型密封圈5内测，其上端距U型密封圈5上端为h 2且h 2=h 1/4，壁厚为b 2且b 2=b 1/3。工作时，这种设计防止U型密封圈5变形失效，即通过U型钢环9的高强度和高刚度，抵抗U型密封圈5的变形，防止其密封失效；而将U型钢环9高度设计为低于U型密封圈5，这种设计可使U型密封圈5随活塞4运动时可产生微小的变形，通过减少接触面，来降低活塞4的运动阻力。 The material of the U-shaped steel ring 9 is 45 steel, and the U-shaped steel ring 9 is installed on the inside of the U-shaped sealing ring 5, and its upper end is h2 from the upper end of the U - shaped sealing ring 5 , and h2 = h1 / 4 , and the wall thickness is b2 And b 2 = b 1 /3. When working, this design prevents the deformation and failure of the U-shaped sealing ring 5, that is, through the high strength and high rigidity of the U-shaped steel ring 9, it resists the deformation of the U-shaped sealing ring 5 and prevents its sealing failure; while the height of the U-shaped steel ring 9 is designed Being lower than the U-shaped sealing ring 5, this design can make the U-shaped sealing ring 5 produce slight deformation when moving with the piston 4, and reduce the movement resistance of the piston 4 by reducing the contact surface.
梯形密封圈8的材料为橡胶，梯形密封圈8为4个且2个为一组安装在U型密封圈5的两端上，其高度为h 3且h 3=h 1/8。工作时，这种设计降低U型密封圈5的变形、加强活塞4的密封，即通过梯形密封圈8和U型密封圈5的相互作用，将U型密封圈5的压缩变形能以摩擦热能的形式消耗，降低U型密封圈5的变形。 The material of the trapezoidal sealing ring 8 is rubber, and there are 4 trapezoidal sealing rings 8 and 2 are installed on the two ends of the U-shaped sealing ring 5 in a group, and its height is h 3 and h 3 = h 1 /8. When working, this design reduces the deformation of the U-shaped sealing ring 5 and strengthens the sealing of the piston 4, that is, through the interaction between the trapezoidal sealing ring 8 and the U-shaped sealing ring 5, the compression deformation of the U-shaped sealing ring 5 can be converted into frictional heat energy. The consumption of the form reduces the deformation of the U-shaped sealing ring 5.
结合图3所示，除渣环3安装在活塞4的前、后两端面上，除渣环3的截面为三角圆弧结构，其圆弧半径为R，除渣环3外侧端上由内到外依次设有大凹槽和小凹槽。工作时，这种设计实现活塞4运动除渣及暂存漏油，即通过圆弧结构，在减小活塞4运动阻力的前提下，又可使缸筒12上的油渣沿圆弧流入缸筒12内腔，防止油渣进入活塞4和缸筒12的接触面引起摩擦磨损，此外，大、小凹槽可暂存微小泄漏油和油渣。 As shown in Figure 3, the slag removal ring 3 is installed on the front and rear end surfaces of the piston 4, the cross section of the slag removal ring 3 is a triangular arc structure, the radius of the arc is R , and the outer end of the slag removal ring 3 is formed by the Large grooves and small grooves are arranged in turn outside. When working, this design realizes the movement of piston 4 to remove slag and temporarily store oil leakage, that is, through the arc structure, on the premise of reducing the movement resistance of piston 4, the oil residue on the cylinder 12 can flow into the cylinder along the arc. The inner cavity of the barrel 12 prevents oil residue from entering the contact surface between the piston 4 and the cylinder barrel 12 to cause friction and wear. In addition, the large and small grooves can temporarily store small leakage oil and oil residue.
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| CN201510602209.XA CN105179377B (en) | 2015-09-21 | 2015-09-21 | A kind of sealing piston of hydraulic cylinder device with anti-deformation and storage oil leak ability |
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| CN201510602209.XA CN105179377B (en) | 2015-09-21 | 2015-09-21 | A kind of sealing piston of hydraulic cylinder device with anti-deformation and storage oil leak ability |
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| CN105179377B CN105179377B (en) | 2017-06-23 |
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| CN106050820A (en) * | 2016-08-17 | 2016-10-26 | 四川英发太阳能科技有限公司 | Silk screen detecting system of solar cells |
| CN111734734A (en) * | 2020-07-02 | 2020-10-02 | 台州七八一六船舶工业有限公司 | An adjusting device for radial thrust sliding bearing |
| CN113431818A (en) * | 2021-06-16 | 2021-09-24 | 深圳市先进智能技术研究所 | Hydraulic cylinder with novel sealing structure |
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| CN102606442A (en) * | 2012-03-21 | 2012-07-25 | 三一重工股份有限公司 | Piston pump for pumping slurry shaped materials, in particular concrete, and concrete pump |
| CN203308828U (en) * | 2013-05-17 | 2013-11-27 | 苏州东风益方汽车零部件有限公司 | High-stability connecting rod |
| CN204985164U (en) * | 2015-09-21 | 2016-01-20 | 济南大学 | Pneumatic cylinder piston packaging device with oil leak is just stored up to shape of preapring for an unfavorable turn of events |
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| CN106050820A (en) * | 2016-08-17 | 2016-10-26 | 四川英发太阳能科技有限公司 | Silk screen detecting system of solar cells |
| CN106050820B (en) * | 2016-08-17 | 2018-11-13 | 四川英发太阳能科技有限公司 | A kind of silk-screen detecting system of solar cell |
| CN111734734A (en) * | 2020-07-02 | 2020-10-02 | 台州七八一六船舶工业有限公司 | An adjusting device for radial thrust sliding bearing |
| CN113431818A (en) * | 2021-06-16 | 2021-09-24 | 深圳市先进智能技术研究所 | Hydraulic cylinder with novel sealing structure |
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