CN107269623A - A kind of Rodless cylinder applied to door of railway vehicle - Google Patents
A kind of Rodless cylinder applied to door of railway vehicle Download PDFInfo
- Publication number
- CN107269623A CN107269623A CN201710684833.8A CN201710684833A CN107269623A CN 107269623 A CN107269623 A CN 107269623A CN 201710684833 A CN201710684833 A CN 201710684833A CN 107269623 A CN107269623 A CN 107269623A
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- China
- Prior art keywords
- cylinder
- inner cylinder
- door
- piston
- railway vehicle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of Rodless cylinder applied to door of railway vehicle, its drip irrigation device is to include cylinder body, the sliding shoe being slidably connected with cylinder body, the end cap for being arranged on cylinder body two ends, sliding groove is offered along its length on the cylinder body, the sliding shoe includes main cylinder, guide part, and the main part is arranged on the inside of sliding groove and slidably；Inner cylinder is provided with inside the main cylinder, the two ends of the main cylinder are plugged with the limited block for limiting inner cylinder position, the limited block is provided with the through hole coordinated with inner cylinder grafting, the main cylinder, inner cylinder, limited block are coaxially disposed, slided in the inner cylinder and be provided with piston, the inwall of the piston and inner cylinder is closely contradicted, and the end cap is provided with the buffer bar coordinated with inner cylinder grafting close to the side at cylinder body center.In the case of this Rodless cylinder identical stroke, compact conformation, contraction in length；It is simple in construction, it is easily installed and safeguards；Favorable sealing property, the work that can stablize is used.
Description
Technical field
The present invention relates to a kind of cylinder, more specifically, it relates to it is a kind of applied to door of railway vehicle without bar gas
Cylinder.
Background technology
Rodless cylinder makees executive component in pneumatic system, available for the shutter door of automobile, subway and Digit Control Machine Tool, machinery
The running fix of hand coordinate, the part transmission of centerless grinder, building-block machine feed arrangement and transfer matic feeding, cloth paper cutting
Cut with electrostatic painting etc., as the operation principle of common cylinder, simply external connection, seal form are different,
Notification number discloses a kind of mechanical Rodless cylinder for CN204805209U Chinese patent, and it includes cylinder body and slip
The sliding groove position extended along its length is offered on block, the cylinder body, the sliding shoe includes the sliding shoe of integrated setting
Main part and metal outer guide part, the sliding shoe main part are carried out slidably in sliding groove position, the gold
Belong to external orientation portion located at the outer progress external orientation in sliding groove position.
Although this mechanical Rodless cylinder carries out external orientation by metal outer guide part outside sliding groove position, no
It can only avoid sliding shoe from shaking, and sliding shoe can be prevented to be broken, it is ensured that the reliability of mechanical Rodless cylinder and steady
It is qualitative, but the enterprising enforcement of door of railway vehicle is mounted in when use, because the effective travel of stopping sliding door has regulation, simultaneously
Stopping sliding door needs certain cushion stroke when switch is closed, and the length of general Rodless cylinder is more than the mechanism of stopping sliding door,
It can not apply in the mechanism of door of railway vehicle.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide a kind of applied to door of railway vehicle
Rodless cylinder, in the case of the advantage is that identical stroke, compact conformation contraction in length.
To achieve the above object, the invention provides following technical scheme：A kind of nothing applied to door of railway vehicle
Bar cylinder, including cylinder body, be slidably connected with cylinder body sliding shoe, be arranged on the end cap at cylinder body two ends, the cylinder body along length
Direction offers sliding groove, and the sliding shoe includes main cylinder, guide part, and the main cylinder is arranged on inside and the free skating of sliding groove
It is dynamic；
Inner cylinder is provided with inside the main cylinder, the two ends of the main cylinder are plugged with the limited block for limiting inner cylinder position, the limited block
The through hole coordinated with inner cylinder grafting is provided with, the main cylinder, inner cylinder, limited block are coaxially disposed, slides and be provided with the inner cylinder
Piston, the inwall of the piston and inner cylinder is closely contradicted, and the end cap is provided with close to the side at cylinder body center matches somebody with somebody with inner cylinder grafting
The buffer bar of conjunction.
By using above-mentioned technical proposal, door of railway vehicle realizes the work of switch, Sai La under the drive of main cylinder
Door has been required for a cushion stroke when opening and closing, during cushion stroke, and main cylinder continues to move, buffering
The piston that bar is inserted in inner cylinder, inner cylinder be free to motion, and piston is promoted in the presence of buffer bar, and stopping sliding door is being opened
Long as should being with the stroke that closing is buffered, piston mobile buffering that realizes in inner cylinder be formed with the overlapping of certain distance, can
To reduce the length of main cylinder, so as to reduce the length of whole cylinder body, effectively realize in the case of identical stroke,
Rodless cylinder compact conformation contraction in length.
The present invention is further arranged to：The periphery of described limited block and the inwall of cylinder body are closely contradicted.
By using above-mentioned technical proposal, be conducive to Rodless cylinder during work, it is ensured that main cylinder can in cylinder body
With stable operation, it is to avoid limited block has gap with inboard wall of cylinder block, and causes the air-flow at main cylinder two ends in cylinder body identical so that main
The situation that cylinder can not be moved occurs.
The present invention is further arranged to：Inwall of the described through hole close to limited block end is provided with sealing ring, the sealing
The lateral wall of ring and buffer bar is contradicted.
By using above-mentioned technical proposal, be conducive to buffer bar closely to be fitted with limited block, reduce the air pressure in cylinder body
Influence is produced on the piston in main cylinder, there is also certain frictional force between simultaneous buffering bar and sealing ring, drop can be conducive to
The movement velocity of low main cylinder and the effect for reaching cushion stroke.
The present invention is further arranged to：Described piston is provided with groove, the groove close to the surface at two ends and is provided with bullet
Property sealing ring, the elastic seal ring be higher than piston surface.
By using above-mentioned technical proposal, the sealing between favourable piston and inner cylinder, it is to avoid process of the mobile jib in motion
In, cause the pressure at main cylinder two ends to circulate due to there is gap between piston and inner cylinder；Simultaneously elastic seal ring and inner cylinder it
Between have certain frictional force, reduce main cylinder during movement, piston is under pressure situation about being jumped out out of inner cylinder.
The present invention is further arranged to：The two ends of described piston are provided with chamfering one.
By using above-mentioned technical proposal, chamfering one facilitates piston and can be quickly and accurately installed to inside inner cylinder.
The present invention is further arranged to：The outer wall of described inner cylinder is provided with the step surface contradicted with limited block.
By using above-mentioned technical proposal, step surface is contradicted with limited block, is conducive to inner cylinder steady relative to the position of main cylinder
It is fixed, it is to avoid the situation of inner cylinder position movement occurs during use in Rodless cylinder, and causes what Rodless cylinder was damaged
Situation.
The present invention is further arranged to：The two ends of described inner cylinder are provided with chamfering two.
By using above-mentioned technical proposal, chamfering two, which facilitates inner cylinder, can quickly insert the inside of limited block, favorably
In the installment work of Rodless cylinder.
The present invention is further arranged to：Described end cap is provided with air inlet.
By using above-mentioned technical proposal, Rodless cylinder is led to by the air inlet being equipped with the end cap at two ends
Gas, the work for being conducive to whole Rodless cylinder to stablize.
The present invention is further arranged to：Described end cap is tightly connected with cylinder body, and the end cap is provided with to be contradicted with cylinder body
Sealing gasket.
By using above-mentioned technical proposal, end cap is tightly connected with cylinder body avoids Rodless cylinder from occurring during use
The situation of gas leakage, sealing gasket further enhances the sealing between end cap and cylinder body.
In summary, the invention has the advantages that：
1st, in the case of identical stroke, whole Rodless cylinder compact conformation, contraction in length；
2nd, Rodless cylinder is simple in construction, is easily installed and safeguards；
3rd, Rodless cylinder favorable sealing property, the work that can stablize is used.
Brief description of the drawings
Fig. 1 is the structural representation for showing Rodless cylinder；
Fig. 2 is the structural representation for showing sliding shoe；
Fig. 3 is the structural representation for showing end cap；
Fig. 4 is the left view for showing Rodless cylinder；
The sectional view that Fig. 5 is A-A in Fig. 4；
The partial enlarged drawing that Fig. 6 is B in Fig. 5；
Fig. 7 is the structural representation for showing inner cylinder；
Fig. 8 is the structural representation for showing piston；
Fig. 9 is the structural representation for showing elastic seal ring on piston.
Reference：1st, cylinder body；11st, sliding groove；2nd, sliding shoe；21st, main cylinder；211st, inner cylinder；2111st, step surface；2112、
Chamfering two；212nd, limited block；2121st, through hole；22nd, guide part；3rd, end cap；31st, buffer bar；32nd, air inlet；33rd, sealing gasket；4、
Piston；41st, groove；42nd, elastic seal ring；43rd, chamfering one；5th, sealing ring.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Embodiment：A kind of Rodless cylinder applied to door of railway vehicle, as illustrated in fig. 1 and 2, including cylinder body 1 and cylinder
Sliding shoe 2 that body 1 is slidably connected, the end cap 3 for being arranged on the two ends of cylinder body 1, end cap 3 are tightly connected with cylinder body 1, it is to avoid Rodless cylinder
During work, there is the situation that gas is spilt at end cap 3；Sliding groove 11 is offered on cylinder body 1 along its length, it is sliding
Motion block 2 includes main cylinder 21, guide part 22, and main cylinder 21 is arranged on the inside of sliding groove 11 and slidably, door of railway vehicle
The work of switch is realized under the drive of sliding shoe 2.
As shown in Figures 2 and 3, air inlet 32 is provided with end cap 3, is supplied by the realization of air inlet 32, based on cylinder 21 exist
Movement in cylinder body 1 provides dynamic action.Simultaneously in order to further strengthen the sealing of end cap 3, on end cap 3 be provided with
The sealing gasket 33 that cylinder body 1 is contradicted, sealing gasket 33 can produce certain elastic deformation after being squeezed, can by end cap 3 with
Space between cylinder body 1 carries out closure work, so as to further enhance the sealing between end cap 3 and cylinder body 1, it is to avoid
Situation about being leaked air at end cap 3, the use for being conducive to whole Rodless cylinder to stablize.
As it can be seen in figures 5 and 6, stopping sliding door has been required for a cushion stroke when opening and closing, stopping sliding door is in fortune
, it is necessary to ensure that cushion stroke is effectively ensured in dynamic process, while also to improve the compact conformation of whole Rodless cylinder
It is stable；Piston 4 is provided with so being provided with to slide in inner cylinder 211, inner cylinder 211 in the inside of main cylinder 21, piston 4 and inner cylinder 211
Inwall is closely contradicted, and end cap 3 is provided with the buffer bar 31 coordinated with the grafting of inner cylinder 211 close to the side at the center of cylinder body 1.
As it can be seen in figures 5 and 6, the two ends of main cylinder 21 are plugged with the limited block 212 for limiting the position of inner cylinder 211, limited block 212
Provided with the through hole 2121 coordinated with the grafting of inner cylinder 211, main cylinder 21, inner cylinder 211, limited block 212 are coaxially disposed.Limited block 212
Periphery and the inwall of cylinder body 1 are closely contradicted, and are conducive to Rodless cylinder during work, it is ensured that main cylinder 21 is in cylinder body 1
The interior operation that can stablize, it is to avoid limited block 212 has gap with the inwall of cylinder body 1, and causes the air-flow at the main two ends of cylinder 21 in cylinder body 1
It is identical so that the situation that main cylinder 21 can not be moved occurs, while limited block 212 also carries out effective consolidate to the position of inner cylinder 211
It is fixed, Rodless cylinder is reduced during use, and the situation of axial float occurs in inner cylinder 211.
As shown in Figures 6 and 7, in order to further improve stability of the inner cylinder 211 on Rodless cylinder, in inner cylinder 211
Outer wall is provided with the step surface 2111 contradicted with limited block 212, and step surface 2111 is contradicted with limited block 212, is conducive to inner cylinder 211
Position relative to main cylinder 21 is stable, further reduces Rodless cylinder and occurs the movement of the position of inner cylinder 211 during use
Situation, and the situation for causing Rodless cylinder to be damaged.Chamfering 2 2112, chamfering 2 2112 are provided with the two ends of inner cylinder 211
The inside of limited block 212 can quickly be inserted by facilitating inner cylinder 211, be conducive to the installment work of Rodless cylinder.
As seen in figs. 6 and 8, after the position of inner cylinder 211 is stable, now it is accomplished by ensureing to support between piston 4 and inner cylinder 211
Tactile sealing.In piston 4 groove 41 is provided with close to the surface at two ends（As shown in Figure 9）, groove 41 is interior to be provided with elastic seal ring
42, elastic seal ring 42 is higher than the surface of piston 4, and piston 4 itself is exactly that sealing is contradicted between inner cylinder 211, close by elasticity
Seal 42 and the conflict again of inner cylinder 211, so as to be conducive to further improving the sealing between piston 4 and inner cylinder 211, it is to avoid
Mobile jib due to there is gap between piston 4 and inner cylinder 211, and causes the air pressure at the main two ends of cylinder 21 to circulate during motion,
The stability for being conducive to whole Rodless cylinder to use.There is certain frictional force between elastic seal ring 42 and inner cylinder 211 simultaneously, can
To play the effect of reduction stopping sliding door movement velocity, it is ensured that the operation that cushion stroke can be stablized.It is additionally provided with the two ends of piston 4
Chamfering 1, chamfering 1, which facilitates piston 4, can quickly and accurately be installed to the inside of inner cylinder 211.
As it can be seen in figures 5 and 6, when realizing the course of work of cushion stroke, main cylinder 21 continues to move, and buffer bar 31 inserts interior
Piston 4 in cylinder 211, inner cylinder 211 be free to motion, and piston 4 is promoted in the presence of buffer bar 31, according to stopping sliding door
Use requirement, it should be equally long to open and close the stroke of buffering, that is, means that the length of main cylinder 21 should be cushion stroke
Twice；The piston 4 that can be slided in inner cylinder 211 is now used, stopping sliding door is in the case of opening and closing, and piston 4 is received
Pressure to buffer bar 31 moves back and forth in inner cylinder 211 so that cushion stroke realizes the overlapping of certain distance, can reduce
The length of main cylinder 21, so as to reduce the length of whole cylinder body 1, is effectively realized in the case of identical stroke, nothing
Bar air cylinder structure compact length shortens.
As shown in fig. 6, in order to effectively ensure the stability of whole Rodless cylinder in use, through hole 2121 is close
The inwall of the end of limited block 212 is provided with sealing ring 5, and the lateral wall of sealing ring 5 and buffer bar 31 is contradicted.Be conducive to buffer bar 31 with
Limited block 212 closely fit, reduce cylinder body 1 in air pressure in main cylinder piston 4 produce influence, simultaneous buffering bar 31 with it is close
There is also certain frictional force between seal ring 5, the movement velocity of main cylinder 21 can be advantageously reduced and the effect of cushion stroke is reached
Really.
Specific work process：Rodless cylinder after the installation is complete, door of railway vehicle Rodless cylinder drive it
The lower work for realizing switch gate, during stopping sliding door is switched, when reaching 1 boundary's point of cushion stroke, buffer bar 31 passes through spacing
Through hole 2121 on block 212, extend into the inside of inner cylinder 211, because piston 4 can be moved in the inside of inner cylinder 211, stopping sliding door
Under the previous working condition opened or closed, piston 4 has been arrived the other end of inner cylinder 211 by top, and the cushion stroke now performed makes
Obtaining buffer bar 31 can contradict with piston 4, and buffer bar 31 is when promoting piston 4 to move, due between piston 4 and inner cylinder 211
There is certain frictional force, the effect of reduction stopping sliding door movement velocity can be played, it is ensured that the operation that cushion stroke can be stablized, it is living
Plug is realized and moved in the inside of inner tube 4 under the promotion of buffer bar 31 so that the cushion stroke of Rodless cylinder both direction have away from
From coincidence, in the case of identical stroke so that Rodless cylinder compact conformation contraction in length.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
Member can make the modification without creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected in the right of invention by Patent Law.
Claims (9)
1. a kind of Rodless cylinder applied to door of railway vehicle, including cylinder body（1）With cylinder body（1）The slip being slidably connected
Block（2）, be arranged on cylinder body（1）The end cap at two ends（3）, the cylinder body（1）On offer sliding groove along its length（11）, it is described
Sliding shoe（2）Including main cylinder（21）, guide part（22）, the main cylinder（21）It is arranged on sliding groove（11）Inside and free skating
It is dynamic；
It is characterized in that：The main cylinder（21）Inside is provided with inner cylinder（211）, the main cylinder（21）Two ends be plugged with restriction inner cylinder
（211）The limited block of position（212）, the limited block（212）It is provided with and inner cylinder（211）The through hole that grafting coordinates（2121）,
The main cylinder（21）, inner cylinder（211）, limited block（212）It is coaxially disposed, the inner cylinder（211）Interior slip is provided with piston（4）,
The piston（4）With inner cylinder（211）Inwall closely contradict, the end cap（3）Close to cylinder body（1）The side at center be provided with it is interior
Cylinder（211）The buffer bar that grafting coordinates（31）.
2. a kind of Rodless cylinder applied to door of railway vehicle according to claim 1, it is characterized in that：It is described spacing
Block（212）Periphery and cylinder body（1）Inwall closely contradict.
3. a kind of Rodless cylinder applied to door of railway vehicle according to claim 2, it is characterized in that：The through hole
（2121）Close to limited block（212）The inwall of end is provided with sealing ring（5）, the sealing ring（5）With buffer bar（31）Outside
Wall is contradicted.
4. a kind of Rodless cylinder applied to door of railway vehicle according to claim 1, it is characterized in that：The piston
（4）Surface close to two ends is provided with groove（41）, the groove（41）It is interior to be provided with elastic seal ring（42）, the elastic seal ring
（42）Higher than piston（4）Surface.
5. a kind of Rodless cylinder applied to door of railway vehicle according to claim 4, it is characterized in that：The piston
（4）Two ends be provided with chamfering one（43）.
6. a kind of Rodless cylinder applied to door of railway vehicle according to claim 1, it is characterized in that：The inner cylinder
（211）Outer wall be provided with and limited block（212）The step surface of conflict（2111）.
7. a kind of Rodless cylinder applied to door of railway vehicle according to claim 6, it is characterized in that：The inner cylinder
（211）Two ends be provided with chamfering two（2112）.
8. a kind of Rodless cylinder applied to door of railway vehicle according to claim 1, it is characterized in that：The end cap
（3）It is provided with air inlet（32）.
9. a kind of Rodless cylinder applied to door of railway vehicle according to claim 8, it is characterized in that：The end cap
（3）With cylinder body（1）It is tightly connected, the end cap（3）It is provided with and cylinder body（1）The sealing gasket of conflict（33）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710684833.8A CN107269623B (en) | 2017-08-11 | 2017-08-11 | A kind of rodless cylinder applied to door of railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710684833.8A CN107269623B (en) | 2017-08-11 | 2017-08-11 | A kind of rodless cylinder applied to door of railway vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107269623A true CN107269623A (en) | 2017-10-20 |
| CN107269623B CN107269623B (en) | 2018-11-30 |
Family
ID=60077322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710684833.8A Active CN107269623B (en) | 2017-08-11 | 2017-08-11 | A kind of rodless cylinder applied to door of railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107269623B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6396305A (en) * | 1986-10-11 | 1988-04-27 | Akio Matsui | Rodless cylinder |
| JP2005214227A (en) * | 2004-01-27 | 2005-08-11 | Howa Mach Ltd | Rodless cylinder |
| CN102661101A (en) * | 2012-05-15 | 2012-09-12 | 江苏惠民汽车配件制造有限公司 | Plug door for passenger car |
| CN204226337U (en) * | 2014-11-10 | 2015-03-25 | 李容生 | With the piston rodless cylinder of guide plate |
| CN204805209U (en) * | 2015-06-17 | 2015-11-25 | 深圳市金诺气动液压设备有限公司 | Mechanical type rodless cylinder |
-
2017
- 2017-08-11 CN CN201710684833.8A patent/CN107269623B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6396305A (en) * | 1986-10-11 | 1988-04-27 | Akio Matsui | Rodless cylinder |
| JP2005214227A (en) * | 2004-01-27 | 2005-08-11 | Howa Mach Ltd | Rodless cylinder |
| CN102661101A (en) * | 2012-05-15 | 2012-09-12 | 江苏惠民汽车配件制造有限公司 | Plug door for passenger car |
| CN204226337U (en) * | 2014-11-10 | 2015-03-25 | 李容生 | With the piston rodless cylinder of guide plate |
| CN204805209U (en) * | 2015-06-17 | 2015-11-25 | 深圳市金诺气动液压设备有限公司 | Mechanical type rodless cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107269623B (en) | 2018-11-30 |
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