CN101612946B - Bidirectional elastic cement buffer - Google Patents
Bidirectional elastic cement buffer Download PDFInfo
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- CN101612946B CN101612946B CN2008101832917A CN200810183291A CN101612946B CN 101612946 B CN101612946 B CN 101612946B CN 2008101832917 A CN2008101832917 A CN 2008101832917A CN 200810183291 A CN200810183291 A CN 200810183291A CN 101612946 B CN101612946 B CN 101612946B
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- piston rod
- cylindrical shell
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- elastic cement
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Abstract
The invention relates to a bidirectional elastic cement buffer comprising a cylinder, a right end cover, elastic cement, a piston rod, an outer cylinder, a left end cover, a left sealing part and a right sealing part. The cylinder is sleeved in the outer cylinder; both ends of the cylinder are respectively connected with the right end cover and the left end cover; the elastic cement is sleeved in the cylinder; and both ends of the piston rod respectively penetrate through the centers of the right end cover and the left end cover and can be movably sleeved in the cylinder. The invention has compact structure and can respectively extend out of a space enclosed by the cylinder from both ends of the piston rod, thereby saving the mounting space and solving the problem of limited mounting size. Meanwhile, a throttle clearance between the piston rod and the cylinder generates damping action, and the elastic cement is solely compressed to together absorb heat; and the piston rod can avoid overlarge unbalance loads by the auxiliary positioning and guiding actions of the outer cylinder.
Description
Technical field
The present invention relates to a kind of vehicle bumper, specifically, relate to a kind of elastic cement buffer that is used between passenger train, lorry and city railway vehicle.
Background technology
Energy disperser (or bumper) is widely used in each neck city such as automobile, construction machinery and equipment, petroleum machinery, highway bridge, the energy disperser that uses or the kind of bumper are a lot, but mainly contain several big classes such as oil pressure damper, spring damper and rubber absorbers with regard to its working medium.And the energy disperser that is applied to the above-listed workshop of guideway vehicle mainly contains bumper, friction-type energy disperser, rubber draft gear, friction rubber type energy disperser, water bumper and air dashpot etc.
Along with the continuous appearance of science and technology development and new material new process, shown its good damping characteristics as the elastic cement of High molecular material, over nearly 20 years on high speed train, passenger vehicle and the lorry in Europe application obtained success.Late nineteen nineties in 20th century, China has begun elastic cement material and Research on Resilient Rubber Draft Gears, and with the 5th speed raising train of railway in 2004 on obtained comparatively widely and to have used, deepening continuously and, grasped the principle of design and the method for designing of elastic cement buffer along with China railways development to the in-depth study of elastic cement buffer.
And the piston rod that is used in the various elastic cement buffer on passenger train, locomotive and the lorry at present is unidirectional type---the piston rod that is to say energy disperser only has the outside of the extended cylindrical shell of an end.The elastic cement buffer of this kind structural shape is because of being subjected to the influence of axial installation dimension and draft gear travel etc., and the elastic cement buffer of this kind structural shape is restricted in axial installation dimension application less, when structural requirement is compact.
Summary of the invention
The objective of the invention is to axial installing space and the limited above-mentioned deficiency of installation dimension, but provide a kind of compact conformation, piston rod two ends to move the bidirectional elastic cement buffer of projection buffer at existing elastic cement buffer existence.
Technical scheme of the present invention is: a kind of bidirectional elastic cement buffer, comprise cylindrical shell, right end cap, elastic cement, piston rod, outer cylinder body, left end cap and left sealing member and right sealing member, described barrel jacket is contained in outer cylinder body inside, the two ends of cylindrical shell are connected with left end cap with right end cap respectively, elastic cement is sleeved in the cylindrical shell, the central authorities of right end cap and left end cap are passed at the two ends of piston rod respectively, and the movable inside that is sleeved on cylindrical shell;
Preferably, be provided with the space that elastic cement is flowed between described piston rod mid diameter maximum portion and the cylindrical shell in cylindrical shell, left sealing member is arranged between piston rod and the left end cap, and right sealing member is arranged between piston rod and the right end cap;
Preferably, the left side body of rod diameter of the mid diameter maximum portion of described piston rod is greater than the diameter of the right side body of rod, and the left side body of rod is fixed on the outer cylinder body;
Preferably, described cylindrical shell is a gyro-rotor, and the inside, two ends of cylindrical shell is provided with negative thread, and the outer setting of right end cap and left end cap has the outside thread that matches with the cylindrical shell negative thread;
Preferably, the inside of described cylindrical shell is provided with positioning step, and the outside of right end cap and left end cap is respectively arranged with the step that matches with positioning step;
Preferably, the exterior end of described cylindrical shell is provided with the screens convex, and the inside of outer cylinder body is provided with and the corresponding groove of the exterior screens convex of cylindrical shell for one section, and the screens boss is installed in the groove;
Preferably, be provided with locating bush between described cylindrical shell and the outer cylinder body.
Beneficial effect of the present invention is: compact conformation of the present invention, all can stretch out outside the space that cylindrical shell comprises by the two ends of piston rod, thereby saved installing space, solved the limited situation of installation dimension, simultaneously, the cloudy Buddhist nun's effect and the elastic cement compression itself that produce by the throttle clearance between piston rod and cylindrical shell absorb energy jointly, and by the auxiliary positioning of outer cylinder body and the effect of guiding, have prevented that piston rod from suffering excessive unbalance loading load.
Description of drawings
Fig. 1 is the cross-sectional view of the specific embodiment of the invention;
Fig. 2 is the structural representation after the specific embodiment of the invention compression.
The specific embodiment
Specific embodiment shown in Fig. 1 to 2: a kind of bidirectional elastic cement buffer, comprise cylindrical shell 1, right end cap 2, elastic cement 3, piston rod 4, outer cylinder body 6, left end cap 7 and left sealing member 8 and right sealing member 9, described cylindrical shell 1 is sleeved on outer cylinder body 6 inside, be provided with locating bush 5 between cylindrical shell 1 and the outer cylinder body 6, the two ends of cylindrical shell 1 respectively with the right end cap 2 and the left end cap 7 that is connected, elastic cement 3 is sleeved in the cylindrical shell 1, the central authorities of right end cap 2 and left end cap 7 are passed at the two ends of piston rod 4 respectively, and the movable inside that is sleeved on cylindrical shell 1, be provided with the space that elastic cement 3 is flowed between piston rod 4 mid diameter maximum portions and the cylindrical shell 1 in cylindrical shell 1, left side sealing member 8 is arranged between piston rod 4 and the left end cap 7, and right sealing member 9 is arranged between piston rod 4 and the right end cap 2.The left side body of rod diameter of the mid diameter maximum portion of piston rod 4 is greater than the diameter of the right side body of rod, and the left side body of rod is fixed on the outer cylinder body 6.Cylindrical shell 1 is a gyro-rotor, the inside, two ends of cylindrical shell 1 is provided with negative thread, the outer setting of right end cap 2 and left end cap 7 has the outside thread that matches with cylindrical shell 1 negative thread, and the inside of cylindrical shell 1 is provided with positioning step, the outside of right end cap 2 and left end cap 7 is respectively arranged with the step that matches with positioning step, and is reliable to guarantee the two end cap location.
During use, earlier energy disperser is assembled, after the energy disperser assembling is finished, elastic cement 3 is poured into from the check valve on the right end cap 2, make to reach certain initial pressure in the cylindrical shell 1, guarantee the starting force of clay energy disperser by special-purpose filling apparatus.The dynamic antivibration characteristic of elastic cement buffer can be regulated by the throttle clearance of 1 of initial fill pressure and piston rod 4 and cylindrical shell.After the elastic cement buffer can was finished, because the difference of two ends piston rod 4 sectional areas, piston rod 4 thicker ends can stretch out cylindrical shell 1.After cylindrical shell 1 is fixed, when outer force compresses outer cylinder body 6 and piston rod 4, piston rod 4 can move right along the orienting sleeve of right end cap 2, left end cap 7, piston rod 4 thicker ends are pressed in the cylindrical shell 1, a thinner end then stretches out outside the cylindrical shell 1, elastic cement 3 pressurizeds in the energy disperser and expanding, thus cause the pressure in the cylindrical shell 1 to raise.Along with piston rod 4 moves right more, elastic cement 3 ratio by compression of cylindrical shell 1 is big more, and the pressure of the elastic cement 3 in the cylindrical shell 1 also will be high more, and required external force is also just big more.After external force was cancelled, because the interior pressure effect in the expansion of elastic cement 3 and the cylindrical shell 1, piston rod 4 to left movement, made elastic cement buffer get back to initial condition along orienting sleeve.
By the crank motion of piston rod 4, elasticity of compression clay 3 produces internal friction between elastic cement 3 interior molecules, absorbs and dissipation energy.
Claims (4)
1. bidirectional elastic cement buffer, comprise cylindrical shell (1), right end cap (2), elastic cement (3), piston rod (4), outer cylinder body (6), left end cap (7) and left sealing member (8) and right sealing member (9), it is characterized in that: described cylindrical shell (1) is sleeved on outer cylinder body (6) inside, the two ends of cylindrical shell (1) are connected with left end cap (7) with right end cap (2) respectively, elastic cement (3) is encapsulated in the cylindrical shell (1), the central authorities of right end cap (2) and left end cap (7) are passed at the two ends of piston rod (4) respectively, and the movable inside that is sleeved on cylindrical shell (1), described piston rod (4) is a cruciform construction, be provided with the space that elastic cement (3) is flowed between the inwall of the middle longitudinal component of piston rod (4) and cylindrical shell (1) in cylindrical shell (1), the area of contact of the left side of the middle longitudinal component of piston rod (4) and elastic cement (3) is greater than the area of contact of its right side and elastic cement (3), and the left side body of rod of piston rod (4) the lateral part body of rod is fixed on the outer cylinder body (6), left side sealing member (8) is arranged between piston rod (4) and the left end cap (7), and right sealing member (9) is arranged between piston rod (4) and the right end cap (2).
2. bidirectional elastic cement buffer as claimed in claim 1, it is characterized in that: described cylindrical shell (1) is a gyro-rotor, the inside, two ends of cylindrical shell (1) is provided with negative thread, and the outer setting of right end cap (2) and left end cap (7) has the outside thread that matches with cylindrical shell (1) negative thread.
3. bidirectional elastic cement buffer as claimed in claim 1 is characterized in that: the inside of described cylindrical shell (1) is provided with positioning step (10), and the outside of right end cap (2) and left end cap (7) is respectively arranged with the step that matches with positioning step (10).
4. bidirectional elastic cement buffer as claimed in claim 1 is characterized in that: be provided with locating bush (5) between described cylindrical shell (1) and the outer cylinder body (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101832917A CN101612946B (en) | 2008-12-12 | 2008-12-12 | Bidirectional elastic cement buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101832917A CN101612946B (en) | 2008-12-12 | 2008-12-12 | Bidirectional elastic cement buffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101612946A CN101612946A (en) | 2009-12-30 |
| CN101612946B true CN101612946B (en) | 2011-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101832917A Active CN101612946B (en) | 2008-12-12 | 2008-12-12 | Bidirectional elastic cement buffer |
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| Country | Link |
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| CN (1) | CN101612946B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB296712A (en) * | 1927-09-05 | 1929-07-18 | Rheinische Metallw & Maschf | Improvements in hydraulic brakes or shock absorbing devices, such as railway vehiclebuffers |
| WO1998049042A1 (en) * | 1997-04-30 | 1998-11-05 | Fabryka Urzadzen Mechanicznych Kamax S.A. | Process and device for absorbing impact energy, in particular in automatic couplings of rail vehicles |
| CN2716586Y (en) * | 2004-07-02 | 2005-08-10 | 北京工业大学 | Double cylinder self-reset elastic daub buffer |
-
2008
- 2008-12-12 CN CN2008101832917A patent/CN101612946B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB296712A (en) * | 1927-09-05 | 1929-07-18 | Rheinische Metallw & Maschf | Improvements in hydraulic brakes or shock absorbing devices, such as railway vehiclebuffers |
| WO1998049042A1 (en) * | 1997-04-30 | 1998-11-05 | Fabryka Urzadzen Mechanicznych Kamax S.A. | Process and device for absorbing impact energy, in particular in automatic couplings of rail vehicles |
| CN2716586Y (en) * | 2004-07-02 | 2005-08-10 | 北京工业大学 | Double cylinder self-reset elastic daub buffer |
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|---|---|
| CN101612946A (en) | 2009-12-30 |
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Address after: 266000 No. 231, Ruichang Road, Sifang District, Shandong, Qingdao Patentee after: CRRC QINGDAO SIFANG VEHICLE RESEARCH INSTITUTE CO., LTD. Address before: 266000 No. 231, Ruichang Road, Sifang District, Shandong, Qingdao Patentee before: Qingdao Sifang Rolling Stock Research Institute Co., Ltd. |