CN203516291U - Hydraulic lock component and two-way hydraulic lock with hydraulic lock component - Google Patents
Hydraulic lock component and two-way hydraulic lock with hydraulic lock component Download PDFInfo
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- CN203516291U CN203516291U CN201320561584.0U CN201320561584U CN203516291U CN 203516291 U CN203516291 U CN 203516291U CN 201320561584 U CN201320561584 U CN 201320561584U CN 203516291 U CN203516291 U CN 203516291U
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- 239000006071 cream Substances 0.000 claims description 46
- 230000002457 bidirectional effect Effects 0.000 claims description 21
- 230000035515 penetration Effects 0.000 claims description 11
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000033558 biomineral tissue development Effects 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 24
- 239000012530 fluid Substances 0.000 description 23
- 230000008569 process Effects 0.000 description 19
- 238000007789 sealing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
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Abstract
The utility model provides a hydraulic lock component and a two-way hydraulic lock with the hydraulic lock component and belongs to the technical field of valves. According to the hydraulic lock component and the two-way hydraulic lock, the problem of potential safety hazards of prior two-way hydraulic locks is solved. The two-way hydraulic lock comprises two hydraulic lock components. The hydraulic lock component comprises a valve, an oil inlet and an oil outlet are formed in the valve, an outer valve spool is located in the valve, an oil inlet chamber is formed by one end of the outer valve spool and the valve, a through hole communicated with the oil inlet chamber is formed in the end, and an oil storage chamber is formed by the other end and the valve. A pressure maintaining chamber is formed between the outer side wall of the outer valve spool and the inner wall of the valve, an inner valve spool is inserted in the outer valve spool, oil channels are formed in the inner valve spool, and a first spring is arranged between the inner valve spool and the valve. An oil passing hole is formed in the side wall of the outer valve spool, and an oil through hole is formed in the side wall of the inner valve spool. By means of the hydraulic lock component and the two-way hydraulic lock, the safety of the hydraulic lock component during usage can be improved, and the service life can be prolonged.
Description
Technical field
The utility model belongs to valve technology field, relates to a kind of hydraulic lock assembly.
The utility model also belongs to field of mechanical technique, relates to a kind of bidirectional hydraulic lock.
Background technique
The oil cylinder that bidirectional hydraulic lock is widely used in the machineries such as engineering transportation lifting needs in the oil circuit of pressurize, be mainly used to prevent that actuator under the effect of external force, misoperation occurring, as (mobile crane, the tyre cranes) such as supporting leg loops of automobile, when its working principle is an oil pocket forward oil-feed, another chamber is oppositely fuel-displaced, otherwise easily right, when two chamber not oil-feeds of forward, oppositely also obstructed, not disturbed by external load, play the effect of lock.Actuator normally in actuator's (oil cylinder and motor etc.), imports and exports a bidirectional hydraulic lock of serial connection, so that can keep no matter be parked in any position.It generally all adopts single spool structure, and spool is installed on to valve inner, and the front end of spool is processed into the conical surface, forms sealing cut off being connected between filler opening and oil outlet with this with valve body.
As Chinese utility model patent application (201020509640.2), a kind of bidirectional hydraulic lock is disclosed, it comprises that valve casing, the first valve seat, the second valve seat, first regulate plug, second to regulate plug, the first spring, the second spring, the first cone valve, the second cone valve and control piston, wherein, the first valve seat and the second valve seat are individually fixed in the two ends of valve casing; First regulates plug, the first spring and the first cone valve to be installed on the first valve seat, and the first spring is connected on the first cone valve; Second regulates plug, the second spring and the second cone valve to be installed on the second valve seat, and the second spring is connected on the second cone valve; Control piston accommodate with valve casing in.Yet, above-mentioned bidirectional hydraulic lock in use, when the oil pressure of joint oil port is when larger, the first cone valve or the second cone valve that under the Driving force of fluid hydraulic coupling, play spool effect can produce and do movement at a high speed in moment, now the volume of the cavity between the first cone valve or the second cone valve and valve casing reduces rapidly, thereby produce thus great impact force, the use of bidirectional hydraulic lock has been caused safely to great impact, when impact force is excessive, even can, by beating and fly for sealing the plug of valve casing, reduce the working life of bidirectional hydraulic lock.
For the problems referred to above, Chinese utility model patent application (201220247455.X) discloses a kind of bidirectional hydraulic lock, comprise valve body, in valve body, be provided with bidirectional piston, bidirectional piston is divided into two adjacent individual cavity of left and right by valve body: cavity one and cavity two, on valve body, there is the pressurize oilhole and the oil inlet hole that are connected with cavity one, other pressurize oilhole and the oil inlet hole that are connected with cavity two, cavity one and cavity two be interior all has spool and spring, spool is resisted against and on valve body, cavity one is divided into two two cavitys that communicate with pressurize oilhole and oil inlet hole respectively, by cavity two compartment, be also simultaneously two two cavitys that communicate with other pressurize oilhole and oil inlet hole respectively, between spool one and bidirectional piston, between spool two and bidirectional piston, all there is slow press mechanism.Although this bidirectional hydraulic lock is arranged on damping mechanism, but because spool is connected with pressurize chamber all the time with the chamber between plug, be that fluid that oil inlet hole enters can continue to promote buffering spool and moves, cause buffering spool travelling speed too fast, and spool is opened slower problem, there is potential safety hazard, and can reduce working life.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of hydraulic lock assembly, and this hydraulic lock assembly can improve the Security while using, and increases the service life.
The purpose of this utility model can realize by following technical proposal: a kind of hydraulic lock assembly, comprise that inside has the hydraulic lock valve body of cavity, on described valve body, offer oil inlet hole and oil outlet, it is characterized in that, on valve interior wall, there is a convex annular edge, in described valve body, be positioned with an outer spool, one end of described outer spool and valve body form oil suction chamber, and at this end, offer the penetration hole being connected with oil suction chamber, the other end and valve body form shoe cream room, between the outer side wall of described outer spool and valve interior wall, form the pressurize chamber that can be connected with oil suction chamber, above-mentioned oil inlet hole is connected with oil suction chamber, oil outlet is connected with pressurize chamber, in described outer spool, be plugged with inner spool, on inner spool, offer the oil duct that one end can be connected with oil suction chamber, the other end of oil duct is connected with shoe cream room, is provided with and can makes inner spool lean with outer spool and block being communicated with between oil duct and oil suction chamber, outer spool and convex annular along leaning and blocking the spring being communicated with between pressurize chamber and oil suction chamber between described inner spool and valve body, on described outer spool sidewall, offer the oil-through hole being connected with pressurize chamber, on described inner spool sidewall, offer the oil through that can block or be communicated with oil duct and oil-through hole when inner spool moves.
When packing state, inner spool is resisted against on outer spool, and outer spool is resisted against convex annular along upper, and shoe cream room is connected with pressurize chamber by oil duct, oil through and oil-through hole, and all block with oil suction chamber in shoe cream room and pressurize chamber, when oil inlet hole oil-feed, oil suction chamber pressure increases, and this pressure promotes inner spool and moves, and because shoe cream room is connected with pressurize chamber, so the fluid in shoe cream room is pressed into pressurize chamber and flows out from oil outlet, shoe cream room is connected with oil suction chamber simultaneously, inner spool is at a mobile segment distance, this distance is less, be that oil through and oil-through hole are blocked rapidly, the external spool pressure of oil suction chamber inner fluid becomes large, outer spool is moved, outer spool departs from convex annular edge, oil suction chamber is connected with pressurize chamber, and along with the movement of inner spool, the time compole that oil through and oil-through hole are blocked is short, shoe cream room is that oil suction chamber is connected by oil duct and pressurize chamber again, fluid in shoe cream room is pressed into pressurize chamber in time, because the process that block in shoe cream room and pressurize chamber has appearred in inner spool in moving process, outer spool is opened in advance fast, the pressure of oil suction chamber is discharged fast, the impact force of reduction to inner spool and outer spool, and pressure in shoe cream room is all discharged in twice handshaking procedures with pressurize chamber, therefore protected overall structure, improved Security, extended working life simultaneously.
In above-mentioned hydraulic lock assembly, the abutment end end face of described inner spool and outer spool is the conical surface, on described outer spool, has the conical surface matching with inner spool, and described convex annular is along above having the conical surface matching with outer spool.The conical surface of inner spool and the conical surface of outer spool against time form sealing, the conical surface on the conical surface of outer spool and convex annular edge against time also form sealing.
In above-mentioned hydraulic lock assembly, described oil duct comprises oil duct one and the some oil ducts of radially offering two of axially offering along inner spool, described oil through is between the opening and oil duct two of oil duct one, on the outer side wall of described inner spool, circumferentially there is annular breach, this annular breach extends to the conical surface of inner spool, and above-mentioned oil duct two is all communicated with annular breach.During pressurize, oil through is communicated with oil-through hole, after moving, is blocked and then is communicated with oil-through hole with oil duct two, and in the moving process of inner spool, oil duct is communicated with oil suction chamber by annular breach and penetration hole all the time.
In above-mentioned hydraulic lock assembly, on described inner spool outer side wall, also there is annular oil groove one, above-mentioned oil through is connected with annular oil groove one, on described outer spool madial wall, there is annular oil groove two, above-mentioned oil-through hole is connected with annular oil groove two, when inner spool is resisted against on outer spool, the notch of described annular oil groove one is relative with the notch of annular oil groove two.There is relative rotation in inner spool and outer spool, annular oil groove one and annular oil groove two can guarantee being communicated with of oil through and oil-through hole in long-term using process.
In above-mentioned hydraulic lock assembly, the two ends of described valve body are all connected with a plug, and described plug is threaded with valve interior wall, and described inner spool stretches out on one end outer side wall of outer spool and has step, one end of described spring one is pressed on one of them plug, and the other end is pressed on step.Spring one provides restoring force to inner spool and outer spool when oil inlet hole stops oil-feed, provides active force for inner spool is resisted against on outer spool, outer spool is resisted against on convex annular edge simultaneously, keeps pressurize chamber stable; Plug is threaded connection on valve body, the pretightening force that rotation plug can Regulation spring one.
In above-mentioned hydraulic lock assembly, in described valve body, be also positioned with a piston, one end of described piston and valve body mineralization pressure chamber, the other end has piston rod, the end that described piston rod is positioned at oil suction chamber and piston rod has a cylindrical convex body, and this convex body stretches into the penetration hole of outer spool and is resisted against inner spool end.When fluid flow process is reverse, it is oil outlet oil-feed, when oil inlet hole is fuel-displaced, in pressure chamber, can enter fluid, this fluid can promote piston and move, and the convex body of piston rod end can back down inner spool, and inner spool and outer spool are separated, and then piston rod continues move and to back down outer spool, outer spool and convex annular edge are separated.
In above-mentioned hydraulic lock assembly, described upper cover of piston rod is provided with spring two, is fixed with annular spring seat in described valve body, and above-mentioned piston rod is through spring seat, and one end of described spring is pressed on piston, and the other end is pressed on spring seat.The acting in opposition process of fluid stops rear spring promotion piston seat and replys mobile.
In above-mentioned hydraulic lock assembly, between described plug and valve body, be equipped with seal ring.Increase the sealing of plug and valve body joint.
A kind of bidirectional hydraulic lock with above-mentioned hydraulic lock assembly, comprise two groups of above-mentioned hydraulic lock assemblies, be respectively hydraulic lock assembly one and hydraulic lock assembly two, described hydraulic lock assembly one is set up in parallel with hydraulic lock assembly two, the oil suction chamber of described hydraulic lock assembly one is connected with the pressure chamber of hydraulic lock assembly two by oil circuit, and the pressure chamber of described hydraulic lock assembly one is connected with the oil suction chamber of hydraulic lock assembly two by oil circuit.
When oil inlet hole oil-feed, the oil outlet of hydraulic lock assembly one is fuel-displaced, the oil inlet hole of hydraulic lock assembly two is fuel-displaced, oil outlet oil-feed.When the oil inlet hole oil-feed of hydraulic lock assembly one, oil suction chamber pressure increases, its part fluid enters the pressure chamber of hydraulic lock assembly two by oil circuit, the pressure chamber pressure of hydraulic lock assembly two increases and promotes inner spool and moves, in the moving process of inner spool, can occur that shoe cream room and pressurize chamber disconnect process, therefore the phenomenon that can avoid the fluid in fluid pressurize chamber from oil duct flows to oil suction chamber of shoe cream room to enter again shoe cream room, make the fluid of shoe cream room enter fast oil suction chamber, release pressure, spool is opened rear shoe cream room and is again communicated with pressurize chamber outside, this process makes the Safety performance of hydraulic lock assembly two higher, avoid plug to be beaten and fly by the too high pressure of shoe cream room, extended working life.
In above-mentioned bidirectional hydraulic lock, the valve body of the valve body of described hydraulic lock assembly one and hydraulic lock assembly two is one-body molded.According to processing technology demand, increase whole mechanical strength.
Compared with prior art, this hydraulic lock assembly has the following advantages:
1, because the process that oil through and oil-through hole are blocked appears in inner spool when mobile; outer spool is opened fast; therefore the pressure of oil suction chamber is discharged fast; the impact force of reduction to inner spool and outer spool; and pressure in shoe cream room is all discharged in twice handshaking procedures with pressurize chamber; protect overall structure, improved Security, extended working life simultaneously.
Therefore 2,, because plug is threaded connection on valve body, rotate the pretightening force that plug can Regulation spring one.
The bidirectional hydraulic originally with above-mentioned hydraulic lock assembly is locked in the phenomenon that oil inlet hole oil-feed, oil outlet can avoid when fuel-displaced the fluid in fluid pressurize chamber from oil duct flows to oil suction chamber of shoe cream room to enter again shoe cream room, make the fluid of shoe cream room enter fast oil suction chamber, release pressure, spool is opened rear shoe cream room and is again communicated with pressurize chamber outside, this process makes the Safety performance of hydraulic lock assembly two higher, avoid plug to be beaten and fly by the too high pressure of shoe cream room, extended working life.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of this hydraulic lock assembly.
Fig. 2 is the structure enlarged view at A place in Fig. 1.
Fig. 3 is the structure sectional view originally with the bidirectional hydraulic lock of above-mentioned hydraulic lock assembly.
Fig. 4 is the structure enlarged view at B place in Fig. 3.
In figure, 1, valve body; 11, oil inlet hole; 12, oil outlet; 13, convex annular edge; 14, spring seat; 2, outer spool; 21, oil-through hole; 22, penetration hole; 23, annular oil groove two; 3, inner spool; 31, oil duct one; 32, oil duct two; 33, oil through; 34, annular breach; 35, annular oil groove one; 4, oil suction chamber; 5, shoe cream room; 6, pressurize chamber; 7, spring one; 8, piston; 81, piston rod; 811, convex body; 9, spring two; 101 plugs; 102, seal ring; 202, hydraulic lock assembly one; 203, hydraulic lock assembly two.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As Fig. 1, shown in Fig. 2, a kind of hydraulic lock assembly, comprise hydraulic lock valve body 1, valve body 1 inside has cavity, on valve body 1, offer oil inlet hole 11 and oil outlet 12, on valve body 1 inwall, there is a convex annular along 13, this convex annular is along having a conical surface on 13, in valve body 1, be positioned with an outer spool 2, the end of outer spool 2 has a conical surface, and this conical surface can lean and seal by the conical surface along 13 with convex annular, this end of outer spool 2 and valve body 1 form oil suction chamber 4, and at this end, offer the penetration hole 22 being connected with oil suction chamber 4, the other end and valve body 1 form shoe cream room 5, between the outer side wall of outer spool 2 and valve body 1 inwall, form pressurize chamber 6, pressurize chamber 6 can be connected with oil suction chamber 4, oil inlet hole 11 is connected with oil suction chamber 4, oil outlet 12 is connected with pressurize chamber 6.In outer spool 2, be plugged with inner spool 3, the insertion end of inner spool 3 has a conical surface, and the inner side of outer spool 2 also has the conical surface, and both can lean and form sealing.On inner spool 3, offer an oil duct, one end of oil duct can be connected with oil suction chamber 4, the other end is connected with shoe cream room 6, is provided with spring 1, between inner spool 3 and valve body 1 under the effect of spring 1, inner spool 3 is resisted against on outer spool 2, outer spool 2 is resisted against convex annular along on 13, now, between oil duct and oil suction chamber 4, is blocked, between pressurize chamber 6 and oil suction chamber 4, be also blocked, pressurize chamber 6 forms packing state.On outer spool 2 sidewalls, offer oil-through hole 21, this oil-through hole 21 is connected with pressurize chamber 6, on inner spool 3 sidewalls, offer oil through 33, when inner spool 3 is resisted against on outer spool 2, oil duct is communicated with oil-through hole 21 by oil through 33, and after inner spool 3 moves, oil through 33 can make oil duct and oil-through hole 21 blocking-up.
Specifically, oil duct comprises oil duct 1 and oil duct 2 32, oil duct 1 is axially offered along inner spool 3, oil duct 2 32 has several, radially offer respectively, one end of oil duct 1 is communicated with shoe cream room 5, the other end is communicated with oil duct 2 32, oil through 33 is between the opening and oil duct 2 32 of oil duct 1, on the outer side wall of inner spool 3, circumferentially there is annular breach 34, this annular breach 34 extends to the conical surface of inner spool 3, oil duct 2 32 is all communicated with annular breach 34, in the moving process of inner spool 3, oil duct is communicated with oil suction chamber 4 by annular breach 34 and penetration hole 22 all the time.On inner spool 3 outer side walls, also there is annular oil groove 1, oil through 33 is connected with annular oil groove 1, on outer spool 2 madial walls, there is annular oil groove 2 23, oil-through hole 21 is connected with annular oil groove 2 23, when inner spool 3 is resisted against on outer spool 2, the notch of annular oil groove 1 is relative with the notch of annular oil groove 2 23, avoid inner spool 3 to occur in long-term using process with outer spool 2 relatively rotating after the phenomenon that is blocked of oil through 33 and oil-through hole 21.The two ends of valve body 1 are all connected with a plug 101, and plug 101 is connected with valve body 1 inner thread, between plug 101 and valve body 1, is equipped with seal ring 102, increase the sealing of plug 101 and valve body 1 joint.Inner spool 3 stretches out on one end outer side wall of outer spool 2 and has step, one end of spring 1 is pressed on the plug 101 of shoe cream room 5 one end, the other end is pressed on step, spring 1 provides restoring force to inner spool 3 and outer spool 2 when oil inlet hole 11 stops oil-feed, for inner spool 3 is resisted against on outer spool 2, outer spool 2 is resisted against convex annular along active force is provided on 13, keep pressurize chamber 6 stable simultaneously; Plug 101 is threaded connection on valve body 1, the pretightening force that rotation plug 101 can Regulation spring 1.
In valve body 1, be also positioned with a piston 8, one end of piston 8 and valve body 1 mineralization pressure chamber, this pressure chamber is less, piston 8 ends have projection, and be resisted against on plug 101 by projection, and gap between piston 8 ends and plug 101 is pressure chamber, piston 8 the other ends have piston rod 81, the end that piston rod 81 is positioned at oil suction chamber 4 and piston rod 81 has a cylindrical convex body 811, the external diameter of convex body 811 is less than the external diameter of piston rod 81 and the internal diameter of penetration hole 22, and the external diameter of piston rod 81 is greater than the internal diameter of penetration hole 22, convex body 811 stretches into penetration hole 22 and is resisted against inner spool 3 ends, piston rod 81 ends are less than oil through 33 to the distance of oil duct 2 32 to the distance of outer spool 2 ends.On piston rod 81, be arranged with spring 29, in valve body 1, be fixed with annular spring seat 14, piston rod 81 is through spring seat 14, and one end of spring 29 is pressed on piston 8, the other end is pressed on spring seat 14, and the acting in opposition process of fluid stops rear spring 29 promotion pistons 8 and does reply movement.
A kind of bidirectional hydraulic lock with above-mentioned hydraulic lock assembly, as shown in Figure 3, Figure 4, comprise two groups of hydraulic lock assemblies, be respectively hydraulic lock assembly 1 and hydraulic lock assembly 2 203, hydraulic lock assembly 1 is set up in parallel with hydraulic lock assembly 2 203, the oil suction chamber 4 of hydraulic lock assembly 1 is connected with the pressure chamber of hydraulic lock assembly 2 203 by oil circuit, and the pressure chamber of hydraulic lock assembly 1 is connected with the oil suction chamber 4 of hydraulic lock assembly 2 203 by oil circuit.According to processing technology demand, increase whole mechanical strength, the valve body 1 of hydraulic lock assembly 1 is one-body molded with the valve body 1 of hydraulic lock assembly 2 203.
When packing state, inner spool 3 is resisted against on outer spool 2, and outer spool 2 is resisted against convex annular along on 13, and shoe cream room 5 is connected with pressurize chamber 6 by oil duct, oil through 33 and oil-through hole 21, and shoe cream room 5 is all blocked with oil suction chamber 4 with pressurize chamber 6.When oil inlet hole 11 oil-feed of hydraulic lock assembly 1, oil suction chamber 4 pressure increase, this pressure promotes inner spool 3 and moves, because shoe cream room 5 is connected by oil through 33 with pressurize chamber 6, therefore the fluid in shoe cream room 5 is pressed into pressurize chamber 6 and flows out from oil outlet 12, while inner spool 3 leaves the rear shoe cream room 5 of outer spool 2 and is connected with oil suction chamber 4, inner spool 3 is at a mobile segment distance, this distance is less, be that oil through 33 is blocked rapidly with oil-through hole 21, external spool 2 pressure of oil suction chamber 4 inner fluid become large, outer spool 2 is moved, outer spool 2 departs from convex annular along 13, oil suction chamber 4 is connected with pressurize chamber 6, and along with the movement of inner spool 3, its displacement distance is the distance between oil through 33 and oil duct 2 32, shoe cream room 5 is connected with pressurize chamber 6 and oil suction chamber 4 by oil duct again, therefore the time compole being blocked between shoe cream room 5 and pressurize chamber 6 is short, but this time is enough to make outer spool 2 to be opened.Because the process of shoe cream room 5 with 6 blocking-up of pressurize chamber appearred in inner spool 3 in moving process; outer spool 2 is opened in advance fast; the pressure of oil suction chamber 4 is discharged fast; the impact force of reduction to inner spool 3 and outer spool 2; and pressure in shoe cream room 5 is all discharged in twice handshaking procedures with pressurize chamber 6; therefore protect overall structure, improved Security, extended working life simultaneously.And just in oil inlet hole 11 oil-feeds of hydraulic lock assembly 1, when oil outlet 12 is fuel-displaced, the oil inlet hole 11 of hydraulic lock assembly 2 203 is fuel-displaced, oil outlet 12 oil-feeds, when oil inlet hole 11 oil-feed of hydraulic lock assembly 1, oil suction chamber 4 pressure increase, its part fluid enters the pressure chamber of hydraulic lock assembly 2 203 by oil circuit, the pressure chamber pressure of hydraulic lock assembly 2 203 increases and promotes inner spool 3 and moves, in the moving process of inner spool 3, can there are shoe cream room 5 and pressurize chamber 6 disconnection processes, and because piston rod 81 ends are less than oil through 33 to the distance of oil duct 2 32 to the distance of outer spool 2 ends, therefore before shoe cream room 5 is communicated with pressurize chamber 6, piston rod 81 can back down outer spool 2, pressurize chamber 6 is communicated with oil suction chamber 4, therefore the phenomenon that can avoid the fluid in fluid pressurize chamber 6 from oil duct flows to oil suction chamber 4 of shoe cream room 5 to enter again shoe cream room 5, make the fluid of shoe cream room 5 enter fast oil suction chamber 4, release pressure, spool 2 is opened rear shoe cream room 5 and is again communicated with pressurize chamber 6 outside, this process makes the Safety performance of hydraulic lock assembly 2 203 higher, avoid plug 101 to be beaten and fly by the too high pressure of shoe cream room 5, extended working life.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used the terms such as body 1, valve body 11, guide sleeve 1, connecting plate 1, bonnet 12, guide sleeve 2 121, connecting plate 2 122, entrance point 13, outlet end 14, valve rod 2, pressing plate 3, packing ring 4, baffle plate 5, spring 6, sealing surface 7, filter screen 8 herein, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (10)
1. a hydraulic lock assembly, comprise that inside has the hydraulic lock valve body (1) of cavity, on described valve body (1), offer oil inlet hole (11) and oil outlet (12), it is characterized in that, on valve body (1) inwall, there is a convex annular along (13), in described valve body (1), be positioned with an outer spool (2), one end of described outer spool (2) and valve body (1) form oil suction chamber (4), and at this end, offer the penetration hole (22) being connected with oil suction chamber (4), the other end and valve body (1) form shoe cream room (5), between the outer side wall of described outer spool (2) and valve body (1) inwall, form the pressurize chamber (6) that can be connected with oil suction chamber (4), above-mentioned oil inlet hole (11) is connected with oil suction chamber (4), oil outlet (12) is connected with pressurize chamber (6), in described outer spool (2), be plugged with inner spool (3), on inner spool (3), offer the oil duct that one end can be connected with oil suction chamber (4), the other end of oil duct is connected with shoe cream room (5), is provided with and can makes inner spool (3) lean with outer spool (2) and block being communicated with between oil duct and oil suction chamber (4), outer spool (2) and convex annular lean and block the spring being communicated with (7) between pressurize chamber (6) and oil suction chamber (4) along (13) between described inner spool (3) and valve body (1), on described outer spool (2) sidewall, offer the oil-through hole (21) being connected with pressurize chamber (6), on described inner spool (3) sidewall, offer the oil through (33) that can block or be communicated with oil duct and oil-through hole (21) when inner spool (3) is mobile.
2. hydraulic lock assembly according to claim 1, it is characterized in that, described inner spool (3) is the conical surface with the abutment end end face of outer spool (2), on described outer spool (2), have the conical surface matching with inner spool (3), described convex annular is along having the conical surface matching with outer spool (2) on (13).
3. hydraulic lock assembly according to claim 2, it is characterized in that, described oil duct comprises oil duct one (31) and the some oil ducts of radially offering two (32) of axially offering along inner spool (3), described oil through (33) is positioned between the opening and oil duct two (32) of oil duct one (31), on the outer side wall of described inner spool (3), circumferentially there is annular breach (34), this annular breach (34) extends to the conical surface of inner spool (3), and above-mentioned oil duct two (32) is all communicated with annular breach (34).
4. hydraulic lock assembly according to claim 1, it is characterized in that, on described inner spool (3) outer side wall, also there is annular oil groove one (35), above-mentioned oil through (33) is connected with annular oil groove one (35), on described outer spool (2) madial wall, there is annular oil groove two (23), above-mentioned oil-through hole (21) is connected with annular oil groove two (23), when inner spool (3) is resisted against on outer spool (2), the notch of described annular oil groove one (35) is relative with the notch of annular oil groove two (23).
5. according to the hydraulic lock assembly described in claim 2 or 3 or 4, it is characterized in that, the two ends of described valve body (1) are all connected with a plug (101), described plug (101) is connected with valve body (1) inner thread, described inner spool (3) stretches out on one end outer side wall of outer spool (2) and has step, it is upper that one end of described spring one (7) is pressed on one of them plug (101), and the other end is pressed on step.
6. hydraulic lock assembly according to claim 5, it is characterized in that, in described valve body (1), be also positioned with a piston (8), one end of described piston (8) and valve body (1) mineralization pressure chamber, the other end has piston rod (81), the end that described piston rod (81) is positioned at oil suction chamber (4) and piston rod (81) has a cylindrical convex body (811), and this convex body (811) stretches into the penetration hole (22) of outer spool (2) and is resisted against inner spool (3) end.
7. hydraulic lock assembly according to claim 6, it is characterized in that, on described piston rod (81), be arranged with spring two (9), in described valve body (1), be fixed with annular spring seat (14), above-mentioned piston rod (81) is through spring seat (14), it is upper that one end of described spring two (9) is pressed on piston (8), and the other end is pressed on spring seat (14).
8. hydraulic lock assembly according to claim 7, is characterized in that, between described plug (101) and valve body (1), is equipped with seal ring (102).
9. a bidirectional hydraulic lock, comprise two groups of hydraulic lock assemblies, wherein one group is hydraulic lock assembly one (202), another group is hydraulic lock assembly two (203), described hydraulic lock assembly one (202) is set up in parallel with hydraulic lock assembly two (203), the oil suction chamber (4) of described hydraulic lock assembly one (202) is connected with the pressure chamber of hydraulic lock assembly two (203) by oil circuit, and the pressure chamber of described hydraulic lock assembly one (202) is connected with the oil suction chamber (4) of hydraulic lock assembly two (203) by oil circuit.
10. bidirectional hydraulic lock according to claim 9, is characterized in that, the valve body (1) of described hydraulic lock assembly one (202) is one-body molded with the valve body (1) of hydraulic lock assembly two (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320561584.0U CN203516291U (en) | 2013-09-10 | 2013-09-10 | Hydraulic lock component and two-way hydraulic lock with hydraulic lock component |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320561584.0U CN203516291U (en) | 2013-09-10 | 2013-09-10 | Hydraulic lock component and two-way hydraulic lock with hydraulic lock component |
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| CN203516291U true CN203516291U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320561584.0U Withdrawn - After Issue CN203516291U (en) | 2013-09-10 | 2013-09-10 | Hydraulic lock component and two-way hydraulic lock with hydraulic lock component |
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| Country | Link |
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| CN (1) | CN203516291U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470572A (en) * | 2013-09-10 | 2013-12-25 | 浙江苏强格液压股份有限公司 | Hydraulic lock assembly and bidirectional hydraulic lock comprising same |
| US11499575B2 (en) | 2019-06-20 | 2022-11-15 | Hitachi Astemo, Ltd. | Hydraulic cylinder device |
-
2013
- 2013-09-10 CN CN201320561584.0U patent/CN203516291U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470572A (en) * | 2013-09-10 | 2013-12-25 | 浙江苏强格液压股份有限公司 | Hydraulic lock assembly and bidirectional hydraulic lock comprising same |
| CN103470572B (en) * | 2013-09-10 | 2016-03-02 | 浙江苏强格液压股份有限公司 | Hydraulic lock assembly and the bidirectional hydraulic lock with above-mentioned hydraulic lock assembly |
| US11499575B2 (en) | 2019-06-20 | 2022-11-15 | Hitachi Astemo, Ltd. | Hydraulic cylinder device |
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Inventor after: Yin Tiejun Inventor before: Luo Xuerong |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140402 Effective date of abandoning: 20160302 |
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