CN203847468U - Stepped steel ball locking hydraulic cylinder - Google Patents
Stepped steel ball locking hydraulic cylinder Download PDFInfo
- Publication number
- CN203847468U CN203847468U CN201420150007.7U CN201420150007U CN203847468U CN 203847468 U CN203847468 U CN 203847468U CN 201420150007 U CN201420150007 U CN 201420150007U CN 203847468 U CN203847468 U CN 203847468U
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- piston rod
- cylinder
- steel ball
- piston
- cylinder tube
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Abstract
The utility model discloses a stepped steel ball locking hydraulic cylinder, belongs to the technical field of locking hydraulic cylinders, and aims to provide a stepped enclosed locking hydraulic cylinder which can be mechanically and automatically locked at any required stroke segment. According to the adopted technical scheme, an outer cylinder barrel is connected with a cylinder cover in a threaded manner; a plurality of radial grooves are formed in the inner wall of the outer cylinder barrel; an inner cylinder barrel is arranged in the inner cavity of the outer cylinder barrel and is in clearance fit with the inner wall of the outer cylinder barrel; a piston rod and a locking piston are arranged in the inner cavity of the inner cylinder barrel; one end of the piston rod is in clearance fit with the inner wall of the inner cylinder barrel, and the other end of the piston rod is fixed by a nut after passing through the cylinder cover; the inner wall of the locking piston is in clearance fit with piston rod, the outer wall of the locking piston is provided with a groove and a boss, and the boss is in clearance with the inner wall of the inner cylinder barrel; one end, which is far away from the cylinder cover, of the locking piston is provided with a steel wire retainer ring, and the other end of the locking piston is elastically connected with one end of a spring; the other end of the spring is arranged in the inner cavity of a spring base; one end of an oil pipe passes through the inner cavity of the piston rod, and is communicated with the inner cavity of the inner cylinder barrel, and the other end of the oil pipe extends out of the inner cavity of the piston rod. The stepped steel ball locking hydraulic cylinder is applied to a locking hydraulic cylinder.
Description
Technical field
There is a grade steel ball locking oil hydraulic cylinder, belong to locking oil hydraulic cylinder technical field.
Background technique
Along with the raising of world's all trades and professions mechanization degree, the more and more extensive existing locking oil hydraulic cylinder of the application of mechanical locking oil hydraulic cylinder is divided into the locking of stroke two ends and needs two kinds of forms of trip segment locking by locked position.Steel ball locking is the locking of stroke two ends, needs trip segment locking to have the forms such as fitting surface interference, outer plug pearl, additional clamping sleeve, screw piston rod, conical surface friction compression.
Outer plug pearl and additional compression lock set are decided to be manual locking, are not suitable with modernization operation.
Screw piston rod is locked as automatic operation, but each root oil hydraulic cylinder requires You Yige spcific power mechanism and power source, and spare system is complicated, mechanism is huge, does not meet equipment hard-cover and simplifies requirement fast.
It is simple that conical surface friction compresses locking framework, but conical surface compression reaction thrust is limited, does not meet large-tonnage armament-related work needs.
Fitting surface interference locking requires very strict to magnitude of interference, magnitude of interference is large, and unlock pressure is large, to oil sources and oil circuit, requires high; Magnitude of interference is little, and latching force is little, and it is unreliable to lock, between the magnitude of interference of corresponding tonnage oil cylinder is controlled at several, simultaneously to product raw material, mechanical processing technique, heat treatedly require corresponding raising, cause difficulty of processing large, yield rate is low, is not suitable for the requirement of high-efficient development and Energy Intensity Reduction.
Model utility content
The utility model overcomes the deficiency that prior art exists, and technical problem to be solved is to provide a kind of grade enclosed locking oil hydraulic cylinder that has that trip segment all can machine automatization locking that needs arbitrarily, meets the special requirement of various equipments.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts: a kind of have a grade steel ball locking oil hydraulic cylinder, comprise outer cylinder, inner cylinder tube, piston rod, oil pipe, lock piston, steel ball, spring, spring seat and cylinder cap, described outer cylinder is threaded with described cylinder cap, inner wall of cylinder is provided with multiple tracks radial groove outside, described inner cylinder tube be arranged on outer cylinder inner chamber and with outer cylinder inwall Spielpassung, at inner cylinder tube outer wall, be provided with the radial circumference hole that a circle can be placed steel ball, described piston rod, lock piston is all arranged on the inner chamber of inner cylinder tube, one end of piston rod and inner cylinder tube inwall Spielpassung, the other end is fixed by locknut through after cylinder cap, the inwall of described lock piston and piston rod Spielpassung and inwall can be connected with piston rod cavity, the outer wall of lock piston is provided with groove and boss and boss and inner cylinder tube inwall Spielpassung, lock piston is provided with the Steel Cable Baffle Ring to lock piston axial limiting away from one end of cylinder cap, one end of the other end elasticity linking springs, the other end of described spring is arranged on the inner chamber of spring seat, described spring seat is along piston rod to being arranged between inner cylinder tube inner chamber and piston rod external diameter, described oil pipe one end is communicated with inner cylinder tube inner chamber through piston rod cavity, the other end is through cylinder cap, piston rod reaches outside piston rod cavity,
The internal diameter of described lock piston and external diameter are provided with sealing guide collar, and one end external diameter of described piston rod and inner cylinder tube Spielpassung is also provided with sealing guide collar, at described outer cylinder, near one end of cylinder cap, are provided with dust ring and guide collar.
One end that described inner cylinder tube does not arrange spring, spring seat is connected with support bulb, and described support bulb is contained in ball-and-socket chassis, and described ball-and-socket chassis and ball-and-socket platen will support bulb by screw thread and fix, and described support bulb is provided with seal ring.
Described ball-and-socket chassis can be rotated along supporting bulb.
The one end reaching outside piston rod cavity through cylinder cap, piston rod at described oil pipe is provided with joint.
Between described spring seat and inner cylinder tube, along inner cylinder tube, be axially provided with back-up ring.
The multiple tracks radial groove of described outer cylinder inwall is equi-spaced apart setting.
Compared to the prior art the utility model has following beneficial effect.
One, by inner cavity of cylinder outside, be provided with the radial groove that multiple tracks can be blocked steel ball, at inner cylinder tube outer wall, establish the radial circumference hole that a circle is placed steel ball, at piston rod external diameter, the lock piston with piston rod Spielpassung is set, along piston rod cavity, oil pipe is set.At inner cylinder tube during in lockup state, steel ball is stuck between outer cylinder radial groove and inner cylinder tube radial circumference hole, when along oil pipe, form between to piston rod and inner cylinder tube anti-chamber (being b chamber) fuel feeding time, oil promotes lock piston and Compress Spring moves axially to cylinder cap one end, groove on lock piston external diameter move to steel ball under position, steel ball enters the groove of lock piston external diameter with regard to departing from the groove of outer cylinder, make the top of steel ball lower than the external diameter of inner cylinder tube, now inner cylinder tube is in released state, inner cylinder tube possesses flexible condition, the outlet that pressure oil communicates with piston rod from lock piston is simultaneously flowed out,
Then to the positive chamber forming between piston rod and inner cylinder tube (being a chamber) fuel feeding, inner cylinder tube starts to extend, along with inner cylinder tube reaches a certain precalculated position, positive and negative chamber does not supply pressure oil, lock piston starts to one end axial direction away from cylinder cap under spring action, so steel ball exits from the groove of lock piston gradually, until steel ball moves on the boss of lock piston, steel ball is stuck between outer cylinder radial groove and inner cylinder tube radial circumference hole again, now steel ball is locked by the groove of outer cylinder, inner cylinder tube is also locked by steel ball simultaneously, this enclosed mechanical caging realizing by boss of lock piston is reliable and stable,
Along with steel ball moves to the groove of the diverse location of outer cylinder, can carry out mechanical caging to the trip segment that needs arbitrarily of oil hydraulic cylinder.So, the utility model is by shirtsleeve operation, do not need the additional energy and the element controlled, with regard to the realization of fast and reliable the mechanical caging that needs arbitrarily trip segment to oil hydraulic cylinder, avoided the unreliable problem of locking occurring in the total travel mechanical locking mechanism of prior art, the utility model profile is succinct simultaneously, compact structure, take up room little, can be widely used in the various equipment that needs arbitrarily trip segment locking.
Two, by the one end at inner cylinder tube, connect and be contained in the support bulb in ball-and-socket chassis, support bulb seal ring is installed, supporting bulb is fixed by screw thread by ball-and-socket chassis and ball-and-socket platen, the utility model can not be worked but can be locked reliably and with long-term as various military hardwares, civil engineering vehicle or other pumping source when working, in the equipment landing leg hydraulic cylinder without any soft leg phenomenon;
Ball-and-socket chassis can make the utility model greatly strengthen the adaptability in out-of-flatness place along supporting bulb rotation, easy to use.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is schematic appearance of the present utility model.
Fig. 3 is the left view of Fig. 1.
In figure, 1 is ball-and-socket platen, and 2 is ball-and-socket chassis, 3 for supporting bulb, and 4 is outer cylinder, and 5 is inner cylinder tube, 6 is piston rod, and 7 is oil pipe, and 8 is lock piston, 9 is Steel Cable Baffle Ring, and 10 is steel ball, and 11 is spring, 12 is spring seat, and 13 is back-up ring, and 14 is cylinder cap, 15 is locknut, and 16 is joint, and 17 is sealing guide collar.
Embodiment
Embodiment one
As shown in Figure 1-Figure 3, a kind of have a grade steel ball locking oil hydraulic cylinder, comprise outer cylinder 4, inner cylinder tube 5, piston rod 6, oil pipe 7, lock piston 8, steel ball 10, spring 11, spring seat 12 and cylinder cap 14, described outer cylinder 4 is threaded with described cylinder cap 14, at outer cylinder 4 inwalls, be provided with multiple tracks radial groove, described inner cylinder tube 5 be arranged on outer cylinder 4 inner chambers and with outer cylinder 4 inwall Spielpassung, at inner cylinder tube 5 outer walls, be provided with the radial circumference hole that a circle can be placed steel ball 10, described piston rod 6, lock piston 8 is all arranged on the inner chamber of inner cylinder tube 5, one end of piston rod 6 and inner cylinder tube 4 inwall Spielpassung, the other end is fixed by locknut 15 through cylinder cap 14 is rear, the inwall of described lock piston 8 and piston rod 6 Spielpassung and inwall can be connected with piston rod 6 inner chambers, the outer wall of lock piston 8 is provided with groove and boss and boss and inner cylinder tube 4 inwall Spielpassung, lock piston 8 is provided with the Steel Cable Baffle Ring 9 to lock piston 8 axial limitings away from one end of cylinder cap 14, one end of the other end elasticity linking springs 12, the other end of described spring 12 is arranged on the inner chamber of spring seat 13, described spring seat 13 is axially arranged between inner cylinder tube 5 inner chambers and piston rod 6 external diameters along piston rod 6, described oil pipe 7 one end are communicated with inner cylinder tube 4 inner chambers through piston rod 6 inner chambers, the other end is through cylinder cap 14, piston rod 6 reaches outside piston rod 6 inner chambers,
The internal diameter of described lock piston 8 and external diameter are provided with sealing guide collar 17, and described piston rod 6 is also provided with sealing guide collar 17 with one end external diameter of inner cylinder tube 4 Spielpassung.At described outer cylinder 4, near one end of cylinder cap 14, be provided with dust ring and guide collar.
The one end reaching outside piston rod 6 inner chambers through cylinder cap 14, piston rod 6 at described oil pipe 7 is provided with joint 16.
Between described spring seat 13 and inner cylinder tube 5, along inner cylinder tube 5, be axially provided with back-up ring 13.
The multiple tracks radial groove of described outer cylinder 4 inwalls is equi-spaced apart setting.
The spacing of the multiple tracks radial groove of the utility model outer cylinder 4 inwalls and large I need design modifying according to real work.
Described lock piston 8 internal diameters and external diameter are all installed sealing guide collar, can block external impurities and enter in oil pocket b chamber, rise lock piston 8 leading roles simultaneously.
The dust ring of installing on described outer cylinder 4 can be isolated the foreign material such as dust, water, vapour and be entered, and guarantees the clean of outer cylinder 4 grooves.
Described spring 11 is arranged in spring seat 12, can prevent that spring 11 from contacting with piston rod 6 with inner cylinder tube 5, can also move axially by restraining spring 11.
Described outer cylinder 4, inner cylinder tube 5, cylinder cap 14, oil pipe 7, Steel Cable Baffle Ring 9, steel ball 10, spring 11, back-up ring 13, locknut 15, joint 16, sealing guide collar 17 is prior art.
Embodiment two
As shown in Figure 1-Figure 3, a kind of have a grade steel ball locking oil hydraulic cylinder, comprise outer cylinder 4, inner cylinder tube 5, piston rod 6, oil pipe 7, lock piston 8, steel ball 10, spring 11, spring seat 12 and cylinder cap 14, described outer cylinder 4 is threaded with described cylinder cap 14, at outer cylinder 4 inwalls, be provided with multiple tracks radial groove, described inner cylinder tube 5 be arranged on outer cylinder 4 inner chambers and with outer cylinder 4 inwall Spielpassung, at inner cylinder tube 5 outer walls, be provided with the radial circumference hole that a circle can be placed steel ball 10, described piston rod 6, lock piston 8 is all arranged on the inner chamber of inner cylinder tube 5, one end of piston rod 6 and inner cylinder tube 4 inwall Spielpassung, the other end is fixed by locknut 15 through cylinder cap 14 is rear, the inwall of described lock piston 8 and piston rod 6 Spielpassung and inwall can be connected with piston rod 6 inner chambers, the outer wall of lock piston 8 is provided with groove and boss and boss and inner cylinder tube 4 inwall Spielpassung, lock piston 8 is provided with the Steel Cable Baffle Ring 9 to lock piston 8 axial limitings away from one end of cylinder cap 14, one end of the other end elasticity linking springs 12, the other end of described spring 12 is arranged on the inner chamber of spring seat 13, described spring seat 13 is axially arranged between inner cylinder tube 5 inner chambers and piston rod 6 external diameters along piston rod 6, described oil pipe 7 one end are communicated with inner cylinder tube 4 inner chambers through piston rod 6 inner chambers, the other end is through cylinder cap 14, piston rod 6 reaches outside piston rod 6 inner chambers,
The internal diameter of described lock piston 8 and external diameter are provided with sealing guide collar 17, and described piston rod 6 is also provided with sealing guide collar 17 with one end external diameter of inner cylinder tube 4 Spielpassung.At described outer cylinder 4, near one end of cylinder cap 14, be provided with dust ring and guide collar.
One end that described inner cylinder tube 5 does not arrange spring 11, spring seat 12 is connected with support bulb 3, and described support bulb 3 is contained in ball-and-socket chassis 2, and it is fixing that described ball-and-socket chassis 2 and ball-and-socket platen 1 will support bulb 3 by screw thread, and described support bulb 3 is provided with seal ring.
Described ball-and-socket chassis 2 can be rotated along supporting bulb 3.
The one end reaching outside piston rod 6 inner chambers through cylinder cap 14, piston rod 6 at described oil pipe 7 is provided with joint 16.
Between described spring seat 13 and inner cylinder tube 5, along inner cylinder tube 5, be axially provided with back-up ring 13.
The multiple tracks radial groove of described outer cylinder 4 inwalls is equi-spaced apart setting.
The spacing of the multiple tracks radial groove of the utility model outer cylinder 4 inwalls and large I need design modifying according to real work.
Described lock piston 8 internal diameters and external diameter are all installed sealing guide collar, can block external impurities and enter in oil pocket b chamber, rise lock piston 8 leading roles simultaneously.
The dust ring of installing on described outer cylinder 4 can be isolated the foreign material such as dust, water, vapour and be entered, and guarantees the clean of outer cylinder 4 grooves.
Described spring 11 is arranged in spring seat 12, can prevent that spring 11 from contacting with piston rod 6 with inner cylinder tube 5, can also move axially by restraining spring 11.
Described outer cylinder 4, inner cylinder tube 5, cylinder cap 14, oil pipe 7, Steel Cable Baffle Ring 9, steel ball 10, spring 11, back-up ring 13, locknut 15, joint 16, sealing guide collar 17 is prior art.
Claims (6)
1. one kind has a grade steel ball locking oil hydraulic cylinder, it is characterized in that: comprise outer cylinder (4), inner cylinder tube (5), piston rod (6), oil pipe (7), lock piston (8), steel ball (10), spring (11), spring seat (12) and cylinder cap (14), described outer cylinder (4) is threaded with described cylinder cap (14), at outer cylinder (4) inwall, be provided with multiple tracks radial groove, described inner cylinder tube (5) be arranged on outer cylinder (4) inner chamber and with outer cylinder (4) inwall Spielpassung, at inner cylinder tube (5) outer wall, be provided with the radial circumference hole that a circle can be placed steel ball (10), described piston rod (6), lock piston (8) is all arranged on the inner chamber of inner cylinder tube (5), one end of piston rod (6) and inner cylinder tube (4) inwall Spielpassung, the other end is through fixing by locknut (15) after cylinder cap (14), the inwall of described lock piston (8) and piston rod (6) Spielpassung and inwall can be connected with piston rod (6) inner chamber, the outer wall of lock piston (8) is provided with groove and boss and boss and inner cylinder tube (4) inwall Spielpassung, lock piston (8) is provided with the Steel Cable Baffle Ring (9) to lock piston (8) axial limiting away from one end of cylinder cap (14), one end of the other end elasticity linking springs (12), the other end of described spring (12) is arranged on the inner chamber of spring seat (13), described spring seat (13) is axially arranged between inner cylinder tube (5) inner chamber and piston rod (6) external diameter along piston rod (6), described oil pipe (7) one end is communicated with inner cylinder tube (4) inner chamber through piston rod (6) inner chamber, the other end is through cylinder cap (14), piston rod (6) reaches outside piston rod (6) inner chamber,
The internal diameter of described lock piston (8) and external diameter are provided with sealing guide collar (17), described piston rod (6) is also provided with sealing guide collar (17) with one end external diameter of inner cylinder tube (4) Spielpassung, in one end of the close cylinder cap (14) of described outer cylinder (4), is provided with dust ring and guide collar.
2. a kind of grade steel ball locking oil hydraulic cylinder that has according to claim 1, it is characterized in that: one end that described inner cylinder tube (5) does not arrange spring (11), spring seat (12) is connected with support bulb (3), described support bulb (3) is contained in ball-and-socket chassis (2), it is fixing that described ball-and-socket chassis (2) and ball-and-socket platen (1) will support bulb (3) by screw thread, and described support bulb (3) is provided with seal ring.
3. a kind of grade steel ball locking oil hydraulic cylinder that has according to claim 2, is characterized in that: described ball-and-socket chassis (2) can be rotated along supporting bulb (3).
4. a kind of grade steel ball locking oil hydraulic cylinder that has according to claim 1 and 2, is characterized in that: the one end reaching outside piston rod (6) inner chamber through cylinder cap (14), piston rod (6) at described oil pipe (7) is provided with joint (16).
5. a kind of grade steel ball locking oil hydraulic cylinder that has according to claim 1 and 2, is characterized in that: between described spring seat (13) and inner cylinder tube (5), along inner cylinder tube (5), be axially provided with back-up ring (13).
6. a kind of grade steel ball locking oil hydraulic cylinder that has according to claim 1 and 2, is characterized in that: the multiple tracks radial groove of described outer cylinder (4) inwall is equi-spaced apart setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420150007.7U CN203847468U (en) | 2014-03-31 | 2014-03-31 | Stepped steel ball locking hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420150007.7U CN203847468U (en) | 2014-03-31 | 2014-03-31 | Stepped steel ball locking hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847468U true CN203847468U (en) | 2014-09-24 |
Family
ID=51560493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420150007.7U Withdrawn - After Issue CN203847468U (en) | 2014-03-31 | 2014-03-31 | Stepped steel ball locking hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847468U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899592A (en) * | 2014-03-31 | 2014-07-02 | 长治清华机械厂 | Step ball lock-up hydraulic cylinder |
| CN109268342A (en) * | 2018-11-23 | 2019-01-25 | 北京精密机电控制设备研究所 | A kind of pressurized strut with both ends steel ball mechanical lock |
| CN110873087A (en) * | 2018-08-29 | 2020-03-10 | 宁波市鑫潮自动化元件有限公司 | Cylinder with adjustable piston rod control position |
-
2014
- 2014-03-31 CN CN201420150007.7U patent/CN203847468U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899592A (en) * | 2014-03-31 | 2014-07-02 | 长治清华机械厂 | Step ball lock-up hydraulic cylinder |
| CN103899592B (en) * | 2014-03-31 | 2015-11-25 | 长治清华机械厂 | There is a grade steel ball locking oil hydraulic cylinder |
| CN110873087A (en) * | 2018-08-29 | 2020-03-10 | 宁波市鑫潮自动化元件有限公司 | Cylinder with adjustable piston rod control position |
| CN109268342A (en) * | 2018-11-23 | 2019-01-25 | 北京精密机电控制设备研究所 | A kind of pressurized strut with both ends steel ball mechanical lock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140924 Effective date of abandoning: 20151125 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |