WO2020083094A1 - 一种无活塞的双作用缸体装置 - Google Patents

一种无活塞的双作用缸体装置 Download PDF

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Publication number
WO2020083094A1
WO2020083094A1 PCT/CN2019/111784 CN2019111784W WO2020083094A1 WO 2020083094 A1 WO2020083094 A1 WO 2020083094A1 CN 2019111784 W CN2019111784 W CN 2019111784W WO 2020083094 A1 WO2020083094 A1 WO 2020083094A1
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WO
WIPO (PCT)
Prior art keywords
piston rod
cylinder
cylinder part
seal
double
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PCT/CN2019/111784
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English (en)
French (fr)
Inventor
黄超能
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佛山市工芯精密机械有限公司
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Application filed by 佛山市工芯精密机械有限公司 filed Critical 佛山市工芯精密机械有限公司
Publication of WO2020083094A1 publication Critical patent/WO2020083094A1/zh
Priority to US17/037,611 priority Critical patent/US11149762B2/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1457—Piston rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1428—Cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1457—Piston rods
    • F15B15/1461—Piston rod sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1438—Cylinder to end cap assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1438—Cylinder to end cap assemblies
    • F15B15/1442—End cap sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members

Definitions

  • the invention relates to the field of cylinder movement without electric action, in particular to a double-acting cylinder device without piston.
  • the existing cylinder device is mainly a piston with a sealing ring to divide the inner cavity of the cylinder into two closed cavities. The pressure difference between the two cavities pushes the piston. In this case, the piston or the inner cavity of the cylinder should be It is very small and the cost is very high.
  • the piston or the cylinder cavity is particularly large and the cost is very high.
  • the single-acting cylinder device has a large application limit because it is only a single-acting device.
  • the device's own spring The reset function of the automatic reset device becomes less ideal as the cylinder device is made longer.
  • the purpose of the present invention is to create a new cylinder device in the field of automation, to facilitate the cylinder device to be more compact, and also to facilitate the cylinder to be made larger and longer, and the piston rod can reciprocate bidirectionally.
  • a double-acting cylinder device without a piston is provided.
  • the present invention provides a pistonless double-acting cylinder device, characterized in that it includes a piston rod component, a first cylinder component provided on the piston rod component, and a A second cylinder member, a tie rod connecting the first cylinder member and the second cylinder member, nuts provided at both ends of the tie rod, a first provided between the first cylinder member and the second cylinder member A seal ring, a first cushion pad and a second cushion pad provided on the piston rod part;
  • the piston rod part includes a left section of the piston rod, and a first seal pad provided on the left section of the piston rod, provided on the first The middle section of the piston rod on the end face of the gasket, the second seal provided on the end surface of the middle section of the piston rod, the right section of the piston rod provided on the second seal;
  • the first cylinder part includes a first outer end cover, which is provided on the first A first dust ring, a first guide ring, and a second seal ring in the outer end cover, a first cylinder body
  • the piston rod component is composed of a left section of the piston rod, a middle section of the piston rod, and a right section of the piston rod, wherein the left section of the piston rod and the right section of the piston rod have a larger diameter, and the middle section of the piston rod has a smaller diameter.
  • first sealing ring is in close contact with the middle section of the piston rod, the first inner end cover, and the second inner end cover.
  • first cylinder part, the left section of the piston rod, the middle section of the piston rod, and the first seal ring form a relatively sealed inner cavity containing a first air hole.
  • the second cylinder part, the right section of the piston rod, the middle section of the piston rod, and the first seal ring form a relatively sealed inner cavity containing a second air hole.
  • piston rod component contains at least one seal.
  • the invention is a pistonless double-acting cylinder device, which avoids the need for machining the inner wall of the cylinder cavity of the cylinder device, and only needs to process both ends of the first cylinder body and the second cylinder body.
  • the processing is simple and convenient, and the manufacturing process does not Limited by the length of the cylinder and the diameter of the inner cavity, the cylinder can be made very long, large, and small; the cylinder device realizes bidirectional action under the action of the medium, and one of the directions of action of the single-acting cylinder device requires a spring To achieve more flexibility.
  • the invention is a pistonless double-acting cylinder device. Because there is no piston, the sealing parts are all on the end face of the cylinder, which is convenient for installation and maintenance. Because it is double-acting, the pistonless cylinder has complete functions and can be applied to more occasions. .
  • FIG. 1 is a schematic diagram of the general structure of a double-acting cylinder device without a piston according to the present invention
  • FIG. 2 is a cross-sectional view of a double-acting cylinder device without a piston according to the present invention
  • the present invention provides a double-acting cylinder device without a piston, which is characterized in that it includes a piston rod part 1 and a first cylinder part 2 provided on the piston rod part 1 is provided at The second cylinder member 3 on the end surface of the first cylinder member 2 connects the tie rod 5 between the first cylinder member 2 and the second cylinder member 3, the nuts 4 provided on both ends of the tie rod 5 are provided on the first The first seal ring 7 between the cylinder member 2 and the second cylinder member 3, the first cushion pad 6 and the second cushion pad 8 provided on the piston rod member 1; the piston rod member 1 includes a piston The left section 11 of the rod, the first seal 12 provided on the left section 11 of the piston rod, the middle section 13 of the piston rod provided on the end surface of the first seal 12 and the second seal 14 provided on the end surface of the middle section 13 of the piston rod The right section 15 of the piston rod on the second gasket 14; the first cylinder part 2 includes a first outer end cover 21, a first dust ring
  • a second inner end cover 37 on the fifth seal ring 36, the second inner end cover 37 includes a second air hole 371.
  • the piston rod component 1 is composed of the left section 11 of the piston rod, the middle section 13 of the piston rod, and the right section 15 of the piston rod, wherein the left section 11 of the piston rod and the right section 15 of the piston rod have a larger diameter, the middle section 13 of the piston rod has a smaller diameter, and the cylinder During the work of the body, the section with the larger diameter is subjected to greater thrust under the action of the greater pressure medium, so the piston rod moves.
  • the first sealing ring 7 is in close contact with the middle section 13 of the piston rod, the first inner end cover 27, and the second inner end cover 37, thereby dividing the inner cavity of the entire cylinder device into two relatively closed cavities.
  • the first cylinder part 2 and the left section 11 of the piston rod, the middle section 13 of the piston rod, and the first sealing ring 7 form a relatively closed inner cavity containing a first air hole 271, where the closed inner cavity is the first role of the piston rod One of the direction conditions.
  • the second cylinder part 3 and the right section 15 of the piston rod, the middle section 13 of the piston rod, and the first sealing ring 7 form a relatively sealed inner cavity containing a second air hole 371, where the sealed inner cavity is the piston rod to achieve the second function One of the direction conditions.
  • the piston rod component 1 contains at least one seal.
  • the present invention provides a piston-free double-acting cylinder device, which provides a brand-new cylinder device, which is convenient for processing and maintenance, and provides a smaller and longer cylinder device.
  • a new method and its double-acting method make the cylinder device more complete in performance and more widely used.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Sealing Devices (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

一种无活塞的双作用缸体装置，包括活塞杆部件(1)，设于活塞杆部件(1)上的第一缸体部件(2)，设于第一缸体部件(2)端面的第二缸体部件(3)，连接第一缸体部件(2)和第二缸体部件(3)的拉杆(5)，设于拉杆(5)两端的螺母(4)，设于第一缸体部件(2)和第二缸体部件(3)之间的第一密封圈(7)，活塞杆部件(1)由活塞杆左段(11)、活塞杆中段(13)、活塞杆右段(15)组成，其中活塞杆左段(11)、活塞杆右段(15)直径较大，活塞杆中段(13)直径较小。该缸体装置无传统活塞，在介质作用下实现双向作用，比单作用缸体装置的其中一个作用方向需要采用弹簧来实现更灵活；只需要加工第一缸体和第二缸体两端，加工简单方便。

Description

一种无活塞的双作用缸体装置 技术领域
本发明涉及无电动作用的缸体运动领域，尤其涉及一种无活塞的双作用缸体装置。
背景技术
在产业升级过程中,需要机器向更大型、更微型方向发展，机器升级需要组成机器的配件也相应升级，需要不断改善配件的制造工艺、新增零配件的基础功能。在工业自动化生产中,在人工智能到来的时代通常遇到传统配件装置难以做得特别精细或者难以做得特别巨大，主要受到现有加工制造设备及相关工艺等因素的限制。现有的缸体装置主要是活塞带密封圈将缸体内腔分为两个密闭腔体，由两个腔体的压差，将活塞推动，这种情况，活塞或者缸体内腔要做得特别小成本是很高的，活塞或者缸体内腔要做得特别大、特别长成本也是很高的，而单作用缸体装置由于只是单作用，具有很大应用局限，装置自身的弹簧自动复位装置的复位功能随着缸体装置做得越长而越不理想。
发明内容
本发明的目的是在自动化领域创造一款新的缸体装置，以方便缸体装置做更精小，也可以方便缸体做得更巨大、更长，且活塞杆能往复双向运动，为此提供一种无活塞的双作用缸体装置。
为实现上述目的，本发明提供一种无活塞的双作用缸体装置，其特征在于，包括活塞杆部件，设于活塞杆部件上的第一缸体部件，设于第一缸体部件端面的第二缸体部件，连接所述第一缸体部件和第二缸体部件的拉杆，设于拉杆两端的螺母，设于所述第一缸体部件和第二缸体部件之间的第一密封圈，设于所述活塞杆部件上的第一缓冲垫和第二缓冲垫；所述活塞杆部件包括活塞杆左段，设于活塞杆左段上的第一密封垫，设于第一密封垫端面的活塞杆中段，设于活塞杆中段端面的第二密封垫，设于第二密封垫上的活塞杆右段；所述第一缸体部件包括第一外端盖，设于第一外端盖内的第一防尘圈、第一导向环、第二密封圈，设于所述第一外端盖端面的第一缸体，设于第一缸体端面的第三密封圈，设于第三密封圈上的第一内端盖，所述第一内端盖包括第一气孔；所述第二缸体部件包括第二外端盖，设于第二外端盖内的第二防尘圈、第二导向环、第四密封圈，设于所述第二外端盖端面的第二缸体，设于第二缸体端面的第五密封圈，设于第五密封圈上的第二内端盖，所述第二内端盖包括第二气孔。
进一步地，所述活塞杆部件由活塞杆左段、活塞杆中段、活塞杆右段组成，其中活塞杆左段、活塞杆右段直径较大，活塞杆中段直径较小。
进一步地，所述第一密封圈与活塞杆中段、第一内端盖、第二内端盖都紧密接触。
进一步地，所述第一缸体部件与活塞杆左段、活塞杆中段、第一密封圈组成含有第一气孔相对密闭的内腔。
进一步地，所述第二缸体部件与活塞杆右段、活塞杆中段、第一密封圈组成含有第二气孔相对密闭的内腔。
进一步地，所述活塞杆部件至少含有1个密封垫。
本发明的有益效果：
本发明一种无活塞的双作用缸体装置，避免了缸体装置需要加工缸体内腔的内壁，只需要加工第一缸体和第二缸体两端，加工简单方便，制造过程中不受缸体长度、内腔直径限制，使得缸体能做得很长、很大、很细小；缸体装置在介质作用下实现双向作用，比单作用缸体装置的其中一个作用方向需要采用弹簧来实现更灵活。
本发明一种无活塞的双作用缸体装置，由于无活塞，密封部件都在缸体端面，安装方便，维护方便，由于是双作用，使得无活塞缸体功能齐备，能应用到更多场合。
附图说明
图1为本发明明一种无活塞的双作用缸体装置的总结构示意图；
图2为本发明明一种无活塞的双作用缸体装置的剖视图；
具体实施方式
下面结合附图详细说明本发明的机构和工作原理。为了更好说明本实施例，附图某些部件会有省略、放大或缩小，并不代表实际产品的尺寸；对于本领域技术人员来说，附图中某些公知结构及其说明可能省略是可以理解的，相同或相似的标号对应相同或相似的部件。
请参见1-2图所示,本发明提供一种无活塞的双作用缸体装置，其特征在于，包括活塞杆部件1，设于活塞杆部件1上的第一缸体部件2，设于第一缸体部件2端面的第二缸体部件3，连接所述第一缸体部件2和第二缸体部件3的拉杆5，设于拉杆5两端的螺母4，设于所述第一缸体部件2和第二缸体部件3之间的第一密封圈7，设于所述活塞杆部件1上的第一缓冲垫6和第二缓冲垫8；所述活塞杆部件1包括活塞杆左段11，设于活塞杆左段11上的第一密封垫12，设于第一密封垫12端面的活塞杆中段13，设于活塞杆中段13端面的第二密封垫14，设于第二密封垫14上的活塞杆右段15；所述第一缸体部件2包括第一外端盖21，设于第一外端盖21内的第一防尘圈22、第一导向环23、第二密封圈24，设于所述第一外端盖21端面的第一缸体25，设于第一缸体25端面的第三密封圈26，设于第三密封圈26上的第一内端盖27，所述第一内端盖27包括第一气孔271；所述第二缸体部件3包括第二外端盖31，设于第二外端盖31内的第二防尘圈32、第二导向环33、第四密封圈34，设于所述第二外端盖31端面的第二缸体35，设于第二缸体35端面的第五密封圈36，设于第五密封圈36上的第二内端盖37，所述第二内端盖37包括第二气孔371。
所述活塞杆部件1由活塞杆左段11、活塞杆中段13、活塞杆右段15组成，其中活塞杆左段11、活塞杆右段15直径较大，活塞杆中段13直径较小，缸体工作过程中，直径较大的一段在受到更大压强介质作用下，受到的推力更大，于是推动活塞杆运动。
所述第一密封圈7与活塞杆中段13、第一内端盖27、第二内端盖37都紧密接触，从而将整个缸体装置的内腔分为两个相对密闭腔体。
所述第一缸体部件2与活塞杆左段11、活塞杆中段13、第一密封圈7组成含有第一气孔271相对密闭的内腔，此处密闭内腔是活塞杆实现第一个作用方向条件之一。
所述第二缸体部件3与活塞杆右段15、活塞杆中段13、第一密封圈7组成含有第二气孔371相对密闭的内腔，此处密闭内腔是活塞杆实现第二个作用方向条件之一。
所述活塞杆部件1至少含有1个密封垫。
综上所述，本发明本发明一种无活塞的双作用缸体装置，提供了一款全新的缸体装置，方便加工，方便维护，为缸体装置做得更细小、更长提供了一种全新方法，其双作用方式，使得缸体装置性能更完整，应用更广泛。
显然，本发明的上述实施例仅仅是为清楚地说明本发明所作的举例，而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明权利要求的保护范围之内。

Claims (6)

  1. 一种无活塞的双作用缸体装置，其特征在于，包括活塞杆部件(1)，设于活塞杆部件(1)上的第一缸体部件(2)，设于第一缸体部件(2)端面的第二缸体部件(3)，连接所述第一缸体部件(2)和第二缸体部件(3)的拉杆(5)，设于拉杆(5)两端的螺母(4)，设于所述第一缸体部件(2)和第二缸体部件(3)之间的第一密封圈(7)，设于所述活塞杆部件(1)上的第一缓冲垫(6)和第二缓冲垫(8)；所述活塞杆部件(1)包括活塞杆左段(11)，设于活塞杆左段(11)上的第一密封垫(12)，设于第一密封垫(12)端面的活塞杆中段(13)，设于活塞杆中段(13)端面的第二密封垫(14)，设于第二密封垫(14)上的活塞杆右段(15)；所述第一缸体部件(2)包括第一外端盖(21)，设于第一外端盖(21)内的第一防尘圈(22)、第一导向环(23)、第二密封圈(24)，设于所述第一外端盖(21)端面的第一缸体(25)，设于第一缸体(25)端面的第三密封圈(26)，设于第三密封圈(26)上的第一内端盖(27)，所述第一内端盖(27)包括第一气孔(271)；所述第二缸体部件(3)包括第二外端盖(31)，设于第二外端盖(31)内的第二防尘圈(32)、第二导向环(33)、第四密封圈(34)，设于所述第二外端盖(31)端面的第二缸体(35)，设于第二缸体(35)端面的第五密封圈(36)，设于第五密封圈(36)上的第二内端盖(37)，所述第二内端盖(37)包括第二气孔(371)。
  2. 如权利要求1所述的一种无活塞的双作用缸体装置，其特征在于，所述活塞杆部件(1)由活塞杆左段(11)、活塞杆中段(13)、活塞杆右段(15)组成，其中活塞杆左段(11)、活塞杆右段(15)直径较大，活塞杆中段(13)直径较小。
  3. 如权利要求1所述的一种无活塞的双作用缸体装置，其特征在于，所述第一密封圈(7)与活塞杆中段(13)、第一内端盖(27)、第二内端盖(37)都紧密接触。
  4. 如权利要求1所述的一种无活塞的双作用缸体装置，其特征在于，所述第一缸体部件(2)与活塞杆左段(11)、活塞杆中段(13)、第一密封圈(7)组成含有第一气孔(271)相对密闭的内腔。
  5. 如权利要求1所述的一种无活塞的双作用缸体装置，其特征在于，所述第二缸体部件(3)与活塞杆右段(15)、活塞杆中段(13)、第一密封圈(7)组成含有第二气孔(371)相对密闭的内腔。
  6. 如权利要求1所述的一种无活塞的双作用缸体装置，其特征在于，所述活塞杆部件(1)至少含有1个密封垫。
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