CN104358738B - A kind of multi-stage cylinder of sequentially-operating - Google Patents
A kind of multi-stage cylinder of sequentially-operating Download PDFInfo
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- CN104358738B CN104358738B CN201410542061.0A CN201410542061A CN104358738B CN 104358738 B CN104358738 B CN 104358738B CN 201410542061 A CN201410542061 A CN 201410542061A CN 104358738 B CN104358738 B CN 104358738B
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- 230000006835 compression Effects 0.000 description 3
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- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
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Classifications
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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
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
Abstract
A kind of multi-stage cylinder of sequentially-operating, cylinder head is drilled with hole, for air inlet or aerofluxuss, one-level cylinder block is linked together with cylinder head by screw, and one end of one-level cylinder block is provided with step, to control the stroke of first stage piston, one-level cylinder block has groove near the place of step, so that composition gas circuit；One end of one-level cylinder block is drilled with hole, for air inlet or aerofluxuss；Side on first stage piston has through hole, in the hole is equipped with the check valve b of rod failure, hole is radially had on first stage piston, have through hole in piston axis direction, through hole is built with check valve a, radial hole and axial hole intersection at axis, first stage piston are had L-type hole, are connected with the hole on secondary cylinder body；Secondary cylinder body, three-stage cylinder body are identical with the structure of one-level cylinder block；The multi-stage cylinder of sequentially-operating of the present invention can control cylinder action in order, and gas circuit will not interact, it is possible to achieve multi-stage cylinder is accurately positioned.It is applied to and can not have good application prospect using the occasion that is fire-proof and explosion-proof, requiring small volume, stroke length, stroke precise control of the signal of telecommunication.
Description
Technical field
The present invention relates to a kind of multi-stage cylinder of sequentially-operating, belong to machine design and manufacture field.
Background technology
Cylinder is as the performer of Industry Control, very universal in applications such as material push, straight-line feeds, especially
It is as executor, to there is unrivaled advantage in fire prevention, explosion-proof occasion cylinder.Now widely used is single-stage gas
Cylinder, i.e. cylinder only one of which cylinder block, a piston and a piston rod, the effective travel due to single-stage cylinder is become with its length
Direct ratio, therefore this cylinder does not accommodate the occasion of Long travel control.Multi-stage cylinder can reduce the volume of cylinder, can provide simultaneously
Longer control stroke.At present multi-stage cylinder exist that gas circuit interacts, cylinders at different levels are not when extending and retracting
Can in order action, cannot precise control stroke shortcoming.
For the above, in order to control the sequence of movement of the pistons at different levels of multi-stage cylinder, the present invention proposes a kind of suitable
The multi-stage cylinder of sequence action.This multi-stage cylinder can stretch out step by step or retract, and can stop at any position according to control requirement
Put, and structure is simple, easy to manufacture.
Content of the invention
It is an object of the invention to provide a kind of multi-stage cylinder of sequentially-operating, this multi-stage cylinder is by cylinder block, piston and valve
The composition such as door.
For achieving the above object, the technical solution used in the present invention is as follows,
A kind of multi-stage cylinder of sequentially-operating, this cylinder includes cylinder head 1, one-level cylinder block 2,3, two grades of gas of first stage piston
Cylinder body 4, second piston 5, three-stage cylinder body 6, three-level piston 7, piston rod 8, check valve a9, rod failure check valve b10, check valve
C11, rod failure check valve d12；It is drilled with hole, for air inlet or aerofluxuss, one-level cylinder block 2 passes through screw and cylinder head 1 in cylinder head 1
Link together, one end of one-level cylinder block 2 is provided with step, to control the stroke of first stage piston 3, one-level cylinder block 2 is near platform
The place of rank has groove, so that composition gas circuit；One end of one-level cylinder block 2 is drilled with hole, for air inlet or aerofluxuss；First stage piston 3
On side have through hole, in the hole, equipped with the check valve b10 of rod failure, first stage piston 3 radially has hole, in piston axis side
To having through hole, through hole, built with check valve a9, radial hole and axial hole intersection at axis, first stage piston 3 has L-type
Hole, is connected with the hole on secondary cylinder body 4；Together with first stage piston 3 is connected by screw with secondary cylinder body 4；Secondary cylinder
One end of body 4 is provided with step, and to control the stroke of second piston 5, secondary cylinder body 4 has groove near the place of step, so that
Composition gas circuit, radially holing at step in one end of secondary cylinder body 4, and is drilled with hole along cylinder body wall, is lived with one-level in this hole
Hole on plug 3 is connected；Side on second piston 5 has through hole, and in the hole is equipped with the check valve d12 of rod failure, edge on second piston 5
Radially have hole, have through hole in piston axis direction, built with check valve c11, radial hole and axial hole are at axis for through hole
Intersection, second piston 5 has L-type hole, is connected with the hole on three-stage cylinder body 6；Second piston 5 is passed through with three-stage cylinder body 6
Mode connects for screw is together；One end of three-stage cylinder body 6 is provided with step, and to control the stroke of three-level piston 7, three-stage cylinder body 6 leans on
The place of close-table rank has groove, so that composition gas circuit, radially hole at step in one end of three-stage cylinder body 6, and along cylinder
Body wall is drilled with hole, and this hole is connected with the hole on second piston 5.
Check valve a9 and check valve c11 includes cover plate b18, spring b19 and valve ball b20, as shown in figure 8, described valve ball b20
Side is connected with cover plate b18 by spring b19, can only one-way flow by the gas of check valve a9 and check valve c11.
Rod failure check valve b10 and rod failure check valve d12 includes check valve valve rod 13, sealing ring 14, valve ball a15, spring a16
With cover plate a17, as shown in fig. 7, valve ball a15 side is connected with cover plate a17 by spring a16；Valve ball a15 opposite side and check valve
Valve rod 13 is connected, and is provided with sealing ring 14 at described check valve valve rod 13 and the hole wall of first stage piston 3.
Gas on the right side of valve ball a15 can not enter on the left of valve ball a15, but is run to the right when check valve valve rod 13 withstands
When, valve ball a15 both sides then can connect, if valve ball a15 is in closed position, on the left of valve ball a15 during air inlet, because acting on
Area on valve ball a15 be more than effect check valve valve rod 13 on area, so when valve rod 13 and valve ball a15 also can transport to the right
OK, rod failure check valve b10 and rod failure check valve d12 opens.
When needing cylinder to advance, compressed air enters chamber A at the P of hole, because check valve a9 can only from right side to the left
Side joint leads to, so now the compressed air of A chamber will promote first stage piston 3 to move right, chamber B is connected with chamber B',
The gas of chamber B is flowed out by hole T, and now first order cylinder starts to stretch out.When first stage piston 3 moves right extreme position
When, the compressed air of A chamber will be through groove I, and radial hole H flows into C chamber, and the gas due to check valve b10 can only be from left to right
Connect, the gas of D chamber will flow into B chamber through via M, check valve b10, and flow out through hole T from B chamber, now second piston 5
Move right, second level cylinder starts to stretch out.When second piston 5 moves right extreme position, the compressed air of C chamber will
Flow into E chamber through groove K, radial hole J, the gas due to check valve d12 can only connect from left to right, the gas of F chamber will be through
Via N, check valve d12 flow into D chamber, and the gas of D chamber flows into B chamber through via M, check valve b10, and from B chamber through hole T
Flow out, now three-level piston 7 moves right, and third level cylinder starts to stretch out, when three-level piston 7 runs to the right extreme position
When, piston rod 8 is out of service.
When needing cylinder to retreat, compressed air enters chamber B from the T of hole at, and promotion first stage piston 3 is to left movement, chamber A
Gas discharged by hole P, now first order cylinder start retract.When first stage piston 3 moves to extreme position to the left, unidirectional
Valve b10 will encounter cylinder head 1, and check valve b10 is backed down, and the gas of B chamber enters chamber D by check valve b10, hole M, pushes away
To left movement, the air of cavity C enters chamber A through check valve a9 to dynamic second piston 5, and is discharged through via P by chamber A, this
When secondary cylinder start retract.When second piston 5 is retracted into extreme position, check valve d12 is backed down, and the gas of D chamber leads to
Cross check valve d12, hole N and enter chamber F, promote three-level piston 7 to left movement, the air of chamber E enters chamber through check valve c11
Room C, then enter chamber A through check valve a9, and discharged through via P by chamber A, now three-stage cylinder starts to retract.When piston 7
When running to extreme position to the left, cylinders retract puts in place.
When needing cylinder stop motion, hole P and T simultaneously closes off, then cylinder is in stop position.
The device have the advantages that it is as follows.
The multi-stage cylinder of sequentially-operating of the present invention can control cylinder action in order, and gas circuit will not shadow mutually
Ring, it is possible to achieve multi-stage cylinder is accurately positioned.
The present invention be applied to can not using the signal of telecommunication fire-proof and explosion-proof, require small volume, stroke length, stroke precise control
Occasion, has good application prospect.
Brief description
Fig. 1 is the structure principle chart of the multi-stage cylinder of sequentially-operating；
Fig. 2 is that the multi-stage cylinder one-level cylinder of sequentially-operating stretches out schematic diagram；
Fig. 3 is that the multi-stage cylinder one-level secondary cylinder of sequentially-operating stretches out schematic diagram；
Fig. 4 is that two grades of three-stage cylinders of multi-stage cylinder one-level of sequentially-operating stretch out schematic diagram；
Fig. 5 is the multi-stage cylinder one-level cylinders retract schematic diagram of sequentially-operating；
Fig. 6 is the multi-stage cylinder one-level secondary cylinder retraction schematic diagram of sequentially-operating；
Fig. 7 is the multi-stage cylinder rod failure one-way valve structures schematic diagram of sequentially-operating；
Fig. 8 is the multi-stage cylinder one-way valve structures schematic diagram of sequentially-operating；
In figure：1st, cylinder head, 2, one-level cylinder block, 3, first stage piston, 4, secondary cylinder body, 5, second piston, 6, three-level
Cylinder block, 7, three-level piston, 8, piston rod, 9, check valve a, 10, rod failure check valve b, 11, check valve c, 12, rod failure check valve
D, 13, check valve valve rod, 14, sealing ring, 15, valve ball a, 16, spring a, 17, cover plate a, 18, cover plate b, 19, spring b, 20, valve
Ball b.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is the structure principle chart of the multi-stage cylinder of sequentially-operating, multi-stage cylinder include cylinder head 1, one-level cylinder block 2,
First stage piston 3, secondary cylinder body 4, second piston 5, three-stage cylinder body 6, three-level piston 7, piston rod 8, check valve a9, rod failure list
To valve b10, check valve c11, rod failure check valve d12.
As shown in figure 1, when needing cylinder to stretch out, hole P is tapped into trachea, hole T is run in pore, compressed air enters chamber
With hole T-phase even, compressed air will promote first stage piston 3 to move right, and due to the presence of check valve a9, compression is empty for room A, chamber B
Gas cannot pass through chamber A enter cavity C, now only first stage piston 3 versus primary cylinder block 2 move, when first stage piston 3 to the right
When running to extreme position, as shown in Figure 2.Now, the compressed air of chamber A will enter cavity C through groove I, hole H, chamber D's
Gas enters chamber B by hole M, rod failure check valve b10, and discharges through hole T, and now second piston 5 moves right, when two grades of work
When plug 5 runs to extreme position to the right, as shown in Figure 3.Now, the compressed air of cavity C will enter chamber E through groove K, hole J,
The gas of chamber F enters chamber D by hole N, rod failure check valve d12, then right hole M, rod failure check valve b10 enter chamber B, and warp
Hole T discharges, and now three-level piston 7 moves right, when three-level piston 7 runs to extreme position to the right, as shown in figure 4, now
Cylinder is fully extended.
As shown in figure 4, when needing cylinders retract, hole T is tapped into trachea, hole P is run in pore, compressed air enters chamber
Room B, chamber A is connected with hole P, and compressed air will promote first stage piston 3 to left movement, and due to the presence of check valve a9, compression is empty
Gas cannot pass through chamber B enter chamber D, now only first stage piston 3 versus primary cylinder block 2 move, when first stage piston 3 to the right
When running to extreme position, as shown in Figure 5.Now, rod failure check valve b10 will open because valve rod is ejected, the compression of chamber B
Air will enter chamber D through rod failure check valve b10, hole M, and the gas of cavity C backs down check valve a9 and enters chamber A, through hole P row
Go out, now, now second piston 5 is to left movement, when second piston 5 runs to extreme position to the right, as shown in Figure 6.Now,
Rod failure check valve d12 will open because valve rod is ejected, and the compressed air of chamber D will enter through rod failure check valve d12, hole N
The gas of chamber F, chamber E backs down check valve c11 and enters cavity C, and the gas of cavity C backs down check valve a9 and enters chamber A, now
Three-level piston 7, to left movement, when three-level piston 7 runs to extreme position to the left, is returned to state as shown in Figure 1, now
Cylinder is fully retracted.
When multi-stage cylinder need stop when it is only necessary to hole P and hole T is blocked simultaneously, piston rod 8 just can stop motion, from
And can realize being accurately positioned.
The above specific embodiment is used for illustrating the present invention, rather than limits the invention.At this
In bright design philosophy and scope of the claims, the present invention is made with any modification or changes, be regarded as the present invention
Protection domain.
Claims (3)
1. a kind of multi-stage cylinder of sequentially-operating it is characterised in that：This cylinder include cylinder head (1), one-level cylinder block (2), one
Level piston (3), secondary cylinder body (4), second piston (5), three-stage cylinder body (6), three-level piston (7), piston rod (8), unidirectional
Valve a (9), rod failure check valve b (10), check valve c (11), rod failure check valve d (12)；Cylinder head is drilled with hole, for air inlet on (1)
Or aerofluxuss, one-level cylinder block (2) linked together with cylinder head (1) by screw, and one end of one-level cylinder block (2) is provided with platform
Rank, to control the stroke of first stage piston (3), one-level cylinder block (2) has groove near the place of step, so that composition gas circuit；One
One end of level cylinder block (2) is drilled with hole, for air inlet or aerofluxuss；Side on first stage piston (3) has through hole, first stage piston
(3) side on has through hole built with rod failure check valve b (10), and first stage piston radially has hole, in piston axis on (3)
Direction has through hole, and through hole is opened on (3) built with check valve a (9), radial hole and axial hole intersection at axis, first stage piston
There is L-type hole, be connected with the hole on secondary cylinder body (4)；First stage piston (3) and secondary cylinder body (4) are connected by screw one
Rise；One end of secondary cylinder body (4) is provided with step, and to control the stroke of second piston (5), secondary cylinder body (4) is near step
Place have groove so that composition gas circuit, one end of secondary cylinder body (4) radially holes at step, and along cylinder body wall
It is drilled with hole, this hole is connected with the L-type hole on first stage piston (3)；Side on second piston (5) has through hole, second piston (5)
On the through hole that has of side built with rod failure check valve d (12), second piston radially has hole, in piston axis on (5)
Direction has through hole, and through hole is opened on (5) built with check valve c (11), radial hole and axial hole intersection at axis, second piston
There is L-type hole, be connected with the hole on three-stage cylinder body (6)；Second piston (5) and three-stage cylinder body (6) are connected by screw one
Rise；One end of three-stage cylinder body (6) is provided with step, and to control the stroke of three-level piston (7), three-stage cylinder body (6) is near step
Place have groove so that composition gas circuit, one end of three-stage cylinder body (6) radially holes at step, and along cylinder body wall
It is drilled with hole, this hole is connected with the hole on second piston (5)；
Check valve a (9) and check valve c (11) includes cover plate b (18), spring b (19) and valve ball b (20), described valve ball b (20)
Side is connected with cover plate b (18) by spring b (19), and the gas by check valve a (9) and check valve c (11) can only one-way flow；
Rod failure check valve b (10) and rod failure check valve d (12) include check valve valve rod (13), sealing ring (14), valve ball a (15),
Spring a (16) and cover plate a (17), valve ball a (15) side is connected with cover plate a (17) by spring a (16)；Valve ball a (15) is another
Side is connected with check valve valve rod (13), is provided with sealing ring at described check valve valve rod (13) and the hole wall of first stage piston (3)
(14).
2. a kind of sequentially-operating according to claim 1 multi-stage cylinder it is characterised in that：Gas on the right side of valve ball a (15)
Body can not enter on the left of valve ball a (15), but when check valve valve rod (13) is withstood and runs to the right, then can in valve ball a (15) both sides
Connection, if valve ball a (15) is in closed position, on the left of valve ball a (15) during air inlet, because acting on valve ball a (15)
Area be more than effect check valve valve rod (13) on area, so when check valve valve rod (13) and valve ball a (15) also can be to the right
Run, rod failure check valve b (10) and rod failure check valve d (12) are opened.
3. a kind of sequentially-operating according to claim 1 multi-stage cylinder it is characterised in that：When needing cylinder to advance,
Compressed air enters chamber A at the P of hole, because check valve a (9) can only connect to the left from right side, so the pressure of now chamber A
Contracting air will promote first stage piston (3) to move right, and chamber B is connected with chamber B', and the gas of chamber B is flowed out by hole T,
Now first order cylinder starts to stretch out；When first stage piston (3) moves right extreme position, the compressed air of chamber A will be through
Cross groove I, radial hole H flows into cavity C, the gas due to rod failure check valve b (10) can only be connected from left to right, the gas of chamber D
Chamber B will be flowed into through via M, rod failure check valve b (10), and flow out through hole T from chamber B, now second piston (5) will be transported to the right
Dynamic, second level cylinder starts to stretch out；When second piston (5) moves right extreme position, the compressed air of cavity C will be passed through
Groove K, radial hole J flow into chamber E, and the gas due to rod failure check valve d (12) can only be connected from left to right, and the gas of chamber F will
Flow into chamber D through via N, rod failure check valve d (12), the gas of chamber D flows into chamber B through via M, rod failure check valve b (10),
And from chamber B through hole T flow out, now three-level piston (7) moves right, and third level cylinder starts to stretch out, when three-level piston (7) to
When the right side runs to extreme position, piston rod (8) is out of service；
When needing cylinder to retreat, compressed air enters chamber B at the T of hole, promotes first stage piston (3) to left movement, chamber A's
Gas is discharged by hole P, and now first order cylinder starts to retract；When first stage piston (3) moves to extreme position to the left, rod failure
Check valve b (10) will encounter cylinder head (1), and rod failure check valve b (10) is backed down, and the gas of chamber B passes through rod failure check valve b
(10), hole M enters chamber D, promotes second piston (5) to left movement, the air of cavity C enters chamber A through check valve a (9),
And discharged through via P by chamber A, now secondary cylinder starts to retract；When second piston (5) is retracted into extreme position, rod failure
Check valve d (12) is backed down, and the gas of chamber D passes through rod failure check valve d (12), hole N enters chamber F, promotes three-level piston (7)
To left movement, the air of chamber E enters cavity C through check valve c (11), then enters chamber A through check valve a (9), and by chamber
Room A discharges through via P, and now three-stage cylinder starts to retract；When three-level piston (7) runs to extreme position to the left, cylinder contracts
Return to position；
When needing cylinder stop motion, hole P and T simultaneously closes off, then cylinder is in stop position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410542061.0A CN104358738B (en) | 2014-10-14 | 2014-10-14 | A kind of multi-stage cylinder of sequentially-operating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410542061.0A CN104358738B (en) | 2014-10-14 | 2014-10-14 | A kind of multi-stage cylinder of sequentially-operating |
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| CN104358738A CN104358738A (en) | 2015-02-18 |
| CN104358738B true CN104358738B (en) | 2017-03-01 |
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| CN104358738A (en) | 2015-02-18 |
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