CN2758540Y - Unpowered full-closed hydraulic device for controlling three-stage portal expansion/contraction - Google Patents
Unpowered full-closed hydraulic device for controlling three-stage portal expansion/contraction Download PDFInfo
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- CN2758540Y CN2758540Y CN 200420097033 CN200420097033U CN2758540Y CN 2758540 Y CN2758540 Y CN 2758540Y CN 200420097033 CN200420097033 CN 200420097033 CN 200420097033 U CN200420097033 U CN 200420097033U CN 2758540 Y CN2758540 Y CN 2758540Y
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Abstract
The utility model discloses an unpowered full-closed hydraulic device for controlling the expansion/contraction of a three-stage portal frame, which comprises two oil cylinder devices, two one-way balance valves, a reversal valve, a one-way valve, an accumulator, and four adjustable one-way throttle valves. Plunger cavities which are connected with a first cylinder body and a second cylinder body are communicated with a passage between piston cavities by means of the action of the reversal valve, so hydraulic oil in the plunger cavities of the first cylinder body and the second cylinder body can flow into the respective piston cavity. Piston rods of the second oil cylinder device and the first oil cylinder device are made to orderly move toward the inner parts of cylinders by means of the gravity of the portal frame and a suspension tool. Therefore, the hydraulic oil in the respective piston cavity is squeezed into the plunger cavities, and the control of the action of the expansion/contraction of the portal frame is realized under the unpowered condition. The problems of difficult wiring, descending safety, etc. which are brought when a power part is adopted are avoided, and equipment parts and the consumption cost in the use process are reduced in the meantime.
Description
Technical field
The utility model relates to a kind of hydraulic pressure installation, particularly relates to three grades of unpowered totally-enclosed hydraulic pressure installation that door frame is stretched/contracted of a kind of control.
Background technique
Hydraulic pressure installation is to realize hydraulicdriven equipment, and it generally includes dynamic part, do-part, control section, slave part, and the effect of power section is mechanical energy is converted to the pressure energy of fluid, as common oil hydraulic pump; The effect of do-part is can convert the pressure of liquid to mechanical energy output, as common oil hydraulic cylinder; The effect of control section is the hydrodynamic pressure in the system, flow and flow direction are controlled or regulated, as common throttle valve, selector valve etc.; The effect of slave part is the proper functioning of the system that guarantees, as common oil pipe, pipe joint etc.Hydraulic transmission is to utilize liquid to come the kind of drive of transmitting movement and power as working medium.Hydraulic transmission has many tangible advantages, compare with mechanical drive mode as hydraulic transmission, can reduce much in the condition lower volume and the weight of output with constant power, and each several part connects with pipeline in the system, layout is equipped with very big flexibility, can constitute the complex system that is difficult to form with other method; Its transmitting movement uniform and stable and for example, cause vibration because of processing and assembly error and clash into unlike mechanical transmission, fluid itself also has vibration absorption ability, therefore be easy to realize quick startup, braking and frequent commutation, can be in operation and realize large-scale stepless speed regulation, and its convenient operation and control, laborsaving, be easy to realize automatic control, overload protection etc.; Therefore, hydraulic pressure installation is widely used in every field.But, when hydraulic pressure installation is used in the stretching of control aerial hanging object such as door frame/when contracting, because existing hydraulic pressure installation need adopt power section, cause wiring to cause difficulty to power section, and bring potential safety hazard easily, simultaneously, also increase the power consumption expense of user cost such as oil hydraulic pump etc.
The model utility content
The purpose of this utility model is to overcome the deficiency of prior art, provide a kind of control three grades of unpowered totally-enclosed hydraulic pressure installation that door frame is stretched/contracted, degradation problem under the difficult wiring of having been brought when both having avoided adopting power section, the Security, the consuming cost that has reduced equipment unit again and reduced using process simultaneously.
The technological scheme that its technical problem that solves the utility model adopts is: three grades of unpowered totally-enclosed hydraulic pressure installation that door frame is stretched/contracted of a kind of control, and it comprises two cylinder apparatus, two unidirectional equilibrium valves, a selector valve, an one-way valve, an accumulator, four adjustable one-way throttle valves;
First cylinder apparatus is contained between telescopic first order door frame and the second level door frame, first cylinder body is hung in first order door frame, the first piston boom end is fixed in the bottom of second level door frame, first cylinder body is provided with piston cavity and plunger cavity, and the unit of piston cavity increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity;
Second cylinder apparatus is contained between telescopic second level door frame and the third level door frame, second cylinder body is hung in the door frame of the second level, second piston rod end is fixed in the bottom of third level door frame, second cylinder body is provided with piston cavity and plunger cavity, and the unit of piston cavity increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity;
The first unidirectional equilibrium valve is provided with A hydraulic fluid port, B hydraulic fluid port and control port, and the A hydraulic fluid port is connected with the first adjustable one-way throttle valve, and the B hydraulic fluid port is connected with the plunger cavity of first cylinder body, and control port is connected with the 3rd adjustable one-way throttle valve;
The second unidirectional equilibrium valve is provided with A hydraulic fluid port, B hydraulic fluid port and control port, and the A hydraulic fluid port is connected with the second adjustable one-way throttle valve, and the B hydraulic fluid port is connected with the plunger cavity of second cylinder body, and control port is connected with the 4th adjustable one-way throttle valve;
The first adjustable one-way throttle valve is provided with first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port is connected with the A hydraulic fluid port of the first unidirectional equilibrium valve, and second hydraulic fluid port is connected with the piston cavity of first cylinder body;
The second adjustable one-way throttle valve is provided with first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port is connected with the A hydraulic fluid port of the second unidirectional equilibrium valve, and second hydraulic fluid port is connected with the piston cavity of second cylinder body;
The 3rd adjustable one-way throttle valve is provided with first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port is connected with selector valve, and second hydraulic fluid port is connected with the control port of the first unidirectional equilibrium valve;
The 4th adjustable one-way throttle valve is provided with first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port is connected with selector valve, and second hydraulic fluid port is connected with the control port of the second unidirectional equilibrium valve;
Accumulator is connected with second hydraulic fluid port, second hydraulic fluid port of the second adjustable one-way throttle valve, the piston cavity of first cylinder body, the piston cavity of second cylinder body, the one-way valve of the first adjustable one-way throttle valve respectively;
One-way valve is provided with oiler and oil outlet, and oiler is connected with selector valve, and oil outlet is connected with accumulator;
Selector valve is three-position four-way valve, is provided with A, B, T, P four hydraulic fluid ports, and the neutral state is that A, B, T three hydraulic fluid ports are communicated with, and the P hydraulic fluid port ends; A retaining state is that P leads to A, and B leads to T; B retaining state is that P leads to B, and A leads to T; The A hydraulic fluid port is connected with first hydraulic fluid port of the 3rd adjustable one-way throttle valve, and the B hydraulic fluid port is connected with first hydraulic fluid port of the 4th adjustable one-way throttle valve, and the T hydraulic fluid port is connected with the oiler of one-way valve, and the P hydraulic fluid port is connected with the B hydraulic fluid port of the second unidirectional equilibrium valve.
In the using process, when three grades of door frames are contraction state, the piston of first cylinder body and second cylinder body be in respectively cylinder body separately in the portion position, the first cylinder body piston cavity and the second cylinder body piston cavity are compressed in minimum state, and the first cylinder body plunger cavity and the second cylinder body plunger cavity expand at maximum rating, at this moment, the pressure of the hydraulic oil in its piston cavity of first cylinder body and the plunger cavity is identical, the hydraulic oil in two chambeies can not produce mobile, equally, the pressure of the hydraulic oil in its piston cavity of second cylinder body and the plunger cavity is also identical, and the hydraulic oil in two chambeies can not produce mobile yet, stores pressure oil in accumulator yet; After door frame is hung in the air, because the effect of gravity, the piston rod of first cylinder apparatus and second cylinder apparatus is subjected to downward pulling force, thereby make the hydraulic oil pressurized in the first cylinder body plunger cavity and the second cylinder body plunger cavity, pressure increases behind the hydraulic oil pressurized, the requirement that flows into piston cavity from plunger cavity is arranged, but this moment since the first unidirectional equilibrium valve and the second unidirectional equilibrium valve end from the passage that the B hydraulic fluid port leads to the A hydraulic fluid port, then the hydraulic oil of two cylinder body plunger cavities can't flow out, this hydraulic oil has produced top power to piston, make piston rod can so just not guarantee the state that still can remain retracted after door frame winches in the air to lower slider under action of gravity;
When needs launch first order door frame and second level door frame mutually, pull selector valve, make selector valve forward the A gear to by neutral position, selector valve is when the A gear, can lead to A from P in the selector valve, B can lead to T, the asphalt channel that then is connected the 3rd adjustable one-way throttle valve is communicated with, part hydraulic oil can flow to the A hydraulic fluid port from the P hydraulic fluid port of selector valve, first hydraulic fluid port from the 3rd adjustable one-way throttle valve flows into the control port that second hydraulic fluid port flows out into the first unidirectional equilibrium valve again, after the control port of the first unidirectional equilibrium valve has hydraulic oil to enter, the passage that the B hydraulic fluid port of the first unidirectional equilibrium valve can lead to the A hydraulic fluid port is opened, like this be in hydraulic oil in the first cylinder body plunger cavity will be under the effect of pressure successively along the B hydraulic fluid port of the first unidirectional equilibrium valve, the A hydraulic fluid port, first hydraulic fluid port of the first adjustable one-way throttle valve, second hydraulic fluid port flows, then enter in the first cylinder body piston cavity, along with the piston of first cylinder apparatus constantly moves to the cylinder mouth, be that piston rod moves down gradually, hydraulic oil in the first cylinder body plunger cavity can continuously outflow, and enter piston cavity, till piston moves into place; Hydraulic oil in the first cylinder body plunger cavity is in its piston cavity process of flowing, because the unit of piston cavity increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity, at piston in cylinder mouth moving process, partial vacuum appears in piston cavity, its cavity pressure descends, hydraulic fluid pressure in the accumulator is greater than the pressure of hydraulic oil in the piston cavity at this moment, then accumulator discharges hydraulic oil to the piston cavity of first cylinder body, make the hydraulic oil in the piston cavity obtain to replenish, reach balanced until pressure, accumulator is no longer till the piston cavity of first cylinder body discharges hydraulic oil.This process has realized the expansion process of first order door frame and second level door frame, owing to can regulate the flow size by the first adjustable one-way throttle valve and the 3rd adjustable one-way throttle valve, the hydraulic oil that makes plunger cavity by first cylinder body flow out is evenly slow, thereby has guaranteed that the stretching, extension between first order door frame and the second level door frame is evenly slow.
When needs launch second level door frame and third level door frame mutually, pull selector valve, make selector valve forward the B gear to, selector valve is when the B gear, can lead to B from P in the selector valve, A can lead to T, the asphalt channel that then is connected the 4th adjustable one-way throttle valve is communicated with, part hydraulic oil can flow to the B hydraulic fluid port from the P hydraulic fluid port of selector valve, first hydraulic fluid port from the 4th adjustable one-way throttle valve flows into the control port that second hydraulic fluid port flows out into the second unidirectional equilibrium valve again, after the control port of the second unidirectional equilibrium valve has hydraulic oil to enter, the passage that the B hydraulic fluid port of the second unidirectional equilibrium valve can lead to the A hydraulic fluid port is opened, like this be in hydraulic oil in the second cylinder body plunger cavity will be under the effect of pressure successively along the B hydraulic fluid port of the second unidirectional equilibrium valve, the A hydraulic fluid port, first hydraulic fluid port of the second adjustable one-way throttle valve, second hydraulic fluid port flows, then enter in the second cylinder body piston cavity, along with the piston of second cylinder apparatus constantly moves to the cylinder mouth, be that piston rod moves down gradually, hydraulic oil in the second cylinder body plunger cavity can continuously outflow, and enter piston cavity, till piston moves into place; Hydraulic oil in the second cylinder body plunger cavity is in its piston cavity process of flowing, because the unit of piston cavity increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity, at piston in cylinder mouth moving process, partial vacuum appears in piston cavity, its cavity pressure descends, hydraulic fluid pressure in the accumulator is greater than the pressure of hydraulic oil in the piston cavity at this moment, then accumulator discharges hydraulic oil to the piston cavity of second cylinder body, make the hydraulic oil in the piston cavity obtain to replenish, reach balanced until pressure, accumulator is no longer till the piston cavity of second cylinder body discharges hydraulic oil.This process has realized the expansion process of second level door frame and third level door frame, owing to can regulate the flow size by the second adjustable one-way throttle valve and the 4th adjustable one-way throttle valve, the hydraulic oil that makes plunger cavity by second cylinder body flow out is evenly slow, thereby has guaranteed that the stretching, extension between second level door frame and the third level door frame is evenly slow.
In the time door frame will being shunk, pull selector valve, make selector valve forward neutral position to, selector valve is when neutral position, and A, B, T three hydraulic fluid ports are communicated with, and the P hydraulic fluid port ends; Third level door frame is shunk to second level door frame, under the effect of door frame and suspender deadweight, the piston of second cylinder apparatus under the ejection of piston rod in cylinder portion move, then the piston cavity of second cylinder body is squeezed, after the hydraulic oil supercharging in the piston cavity greater than the hydraulic oil in the plunger cavity, thereby wash the one-way cock of the second unidirectional equilibrium valve and the second adjustable one-way throttle valve open, hydraulic oil in the piston cavity flows to plunger cavity, because the unit of piston cavity increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity, the hydraulic oil that is flowed out by piston cavity can not be contained in plunger cavity fully, then the part hydraulic oil that flows out of piston cavity can directly enter accumulator, or wash open the 4th adjustable one-way throttle valve valve after selector valve wash the valve of one-way valve again open and flow into accumulator; Same, with second level door frame when first order door frame shrinks, under the effect of door frame and suspender deadweight, the piston of first cylinder apparatus under the ejection of piston rod in cylinder portion move, then the piston cavity of first cylinder body is squeezed, after the hydraulic oil supercharging in the piston cavity greater than the hydraulic oil in the plunger cavity, thereby wash the one-way cock of the first unidirectional equilibrium valve and the first adjustable one-way throttle valve open, hydraulic oil in the piston cavity flows to plunger cavity, because the unit of piston cavity increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity, the hydraulic oil that is flowed out by piston cavity can not be contained in plunger cavity fully, then the part hydraulic oil that flows out of piston cavity can directly enter accumulator, or wash open the 3rd adjustable one-way throttle valve valve after selector valve wash the valve of one-way valve again open and flow into accumulator; Like this, after three grades of door frames shrank, the piston cavity of first cylinder body and second cylinder body was compressed, and plunger cavity is in maximum rating, and a hydraulic oil part that is flowed out by piston cavity enters a plunger cavity part and is stored in the accumulator.For this reason, hydraulic pressure installation has realized controlling stretching/contracting of three grades of door frames under unpowered state.
What the utility model mainly was used in three grades of door frames stretches/contracts control, certainly, be not it only can be used in door frame stretch/contract control, same, it also can be used on other the device or parts, and this device or parts also are hung in aerial need expansion the use.
The beneficial effects of the utility model are, owing to adopted two cylinder apparatus, two unidirectional equilibrium valves, one selector valve, one one-way valve, one accumulator, four adjustable one-way throttle valves constitute three grades of unpowered totally-enclosed hydraulic pressure installation that door frame is stretched/contracted of control, when need launch door frame, the passage that action by selector valve makes the passage that is connected the first cylinder body plunger cavity and piston cavity and is connected the second cylinder body plunger cavity and piston cavity forward successively is communicated with, then the hydraulic oil of the first cylinder body plunger cavity and the second cylinder body plunger cavity can flow to the first cylinder piston chamber and the second cylinder piston chamber under the formed pressure of deadweight successively, thereby realized that hydraulic pressure installation under the situation of power opens door frame not having, when need shrink door frame, gravity by door frame and suspender self moves the piston rod of second cylinder apparatus and first cylinder apparatus successively in cylinder, thereby the hydraulic oil in second cylinder apparatus and the first cylinder apparatus piston cavity is extruded, and the reverse-conducting function by unidirectional equilibrium valve and adjustable one-way throttle valve makes hydraulic oil enter the plunger cavity of second cylinder apparatus and first cylinder apparatus successively respectively, thereby realized that hydraulic pressure installation under the situation of power shrinks door frame not having, this entire work process need not power hydraulic pressure installation, the difficult wiring of having been brought when both having avoided adopting power section, degradation problem under the Security, the consuming cost that has reduced equipment unit again and reduced using process simultaneously; Owing in hydraulic pressure installation, be provided with adjustable one-way throttle valve, by regulating the flow size, can make the mobile uniform and stable of piston rod, thereby guarantee that the stretching, extension between the secondary door frame is evenly slow so that the hydraulic oil that is flowed out by the plunger cavity of cylinder body is evenly slow.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in further detail; But the unpowered totally-enclosed hydraulic pressure installation that three grades of door frames of a kind of control of the present utility model are stretched/contracted is not limited to embodiment.
Fig. 1 is a structural drawing of the present utility model;
Fig. 2 is the scheme of installation of the utility model cylinder apparatus.
Embodiment
Shown in accompanying drawing, three grades of unpowered totally-enclosed hydraulic pressure installation that door frame is stretched/contracted of a kind of control of the present utility model, it comprises two cylinder apparatus, 101,102, two unidirectional equilibrium valves 21,22, a selector valve 3, an one-way valve 4, an accumulator 5, four adjustable one- way throttle valves 61,62,63,64;
First cylinder apparatus 101 is contained between first order door frame 71 and the second level door frame 72, first cylinder body 11 is hung in first order door frame 71, first piston bar 113 ends are fixed in the bottom of second level door frame 72, first cylinder body 11 is provided with piston cavity 111 and plunger cavity 112, and the unit of piston cavity 111 increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity 112; Second cylinder apparatus 102 is contained between second level door frame 72 and the third level door frame 73, second cylinder body 12 is hung in second level door frame 72, second piston rod, 123 ends are fixed in the bottom of third level door frame 73, second cylinder body 12 is provided with piston cavity 121 and plunger cavity 122, and the unit of piston cavity 121 increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity 122;
The first unidirectional equilibrium valve 21 is provided with A hydraulic fluid port, B hydraulic fluid port and control port, and the A hydraulic fluid port is connected with the first adjustable one-way throttle valve 61, and the B hydraulic fluid port is connected with the plunger cavity 112 of first cylinder body 11, and control port is connected with the 3rd adjustable one-way throttle valve 63; The second unidirectional equilibrium valve 62 is provided with A hydraulic fluid port, B hydraulic fluid port and control port, and the A hydraulic fluid port is connected with the second adjustable one-way throttle valve 62, and the B hydraulic fluid port is connected with the plunger cavity 122 of second cylinder body 12, and control port is connected with the 4th adjustable one-way throttle valve 64;
The first adjustable one-way throttle valve 61 is provided with first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port is connected with the A hydraulic fluid port of the first unidirectional equilibrium valve 21, and second hydraulic fluid port is connected with the piston cavity 111 of first cylinder body 11; The second adjustable one-way throttle valve 62 is provided with first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port is connected with the A hydraulic fluid port of the second unidirectional equilibrium valve 22, and second hydraulic fluid port is connected with the piston cavity 121 of second cylinder body 12; The 3rd adjustable one-way throttle valve 63 is provided with first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port is connected with selector valve 3, and second hydraulic fluid port is connected with the control port of the first unidirectional equilibrium valve 21; The 4th adjustable one-way throttle valve 64 is provided with first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port is connected with selector valve 3, and second hydraulic fluid port is connected with the control port of the second unidirectional equilibrium valve 22;
Accumulator 5 is connected with second hydraulic fluid port, second hydraulic fluid port of the second adjustable one-way throttle valve 62, the piston cavity 111 of first cylinder body, the piston cavity 121 of second cylinder body, the one-way valve 4 of the first adjustable one-way throttle valve 61 respectively; One-way valve 4 is provided with oiler and oil outlet, and oiler is connected with selector valve 3, and oil outlet is connected with accumulator 5;
In the using process, when three grades of door frames 71,72,73 when being contraction state, the piston of first cylinder body 11 and second cylinder body 12 be in respectively cylinder body separately in the portion position, the first cylinder body piston cavity 111 and the second cylinder body piston cavity 121 are compressed in minimum state, and the first cylinder body plunger cavity 112 and the second cylinder body plunger cavity 122 expand at maximum rating, at this moment, the pressure of the hydraulic oil in first cylinder body, 11 its piston cavity 111 and the plunger cavity 112 is identical, the hydraulic oil in two chambeies can not produce mobile, equally, the pressure of the hydraulic oil in second cylinder body, 12 its piston cavity 121 and the plunger cavity 122 is also identical, the hydraulic oil in two chambeies can not produce mobile yet, stores pressure oil in accumulator 5 yet; After door frame is hung in the air, because the effect of gravity, the piston rod 113 of first cylinder apparatus 101 and second cylinder apparatus 102,123 are subjected to downward pulling force, thereby make the hydraulic oil pressurized in the first cylinder body plunger cavity 112 and the second cylinder body plunger cavity 122, pressure increases behind the hydraulic oil pressurized, have from plunger cavity 112,122 flow into piston cavity 111,121 requirement, but this moment since the first unidirectional equilibrium valve 21 and the second unidirectional equilibrium valve 22 end from the passage that the B hydraulic fluid port leads to the A hydraulic fluid port, two cylinder body plunger cavities 112 then, 122 hydraulic oil can't flow out, this hydraulic oil has produced top power to piston, make piston rod 113,123 can so just not guarantee the state that still can remain retracted after door frame winches in the air to lower slider under action of gravity;
When needs launch first order door frame 71 and second level door frame 72 mutually, pull selector valve 3, make selector valve 3 forward the A gear to by neutral position, selector valve is when the A gear, can lead to A from P in the selector valve, B can lead to T, the asphalt channel that then is connected the 3rd adjustable one-way throttle valve 63 is communicated with, part hydraulic oil can flow to the A hydraulic fluid port from the P hydraulic fluid port of selector valve 3, first hydraulic fluid port from the 3rd adjustable one-way throttle valve 63 flows into the control port that second hydraulic fluid port flows out into the first unidirectional equilibrium valve 21 again, after the control port of the first unidirectional equilibrium valve 21 has hydraulic oil to enter, the passage that the B hydraulic fluid port of the first unidirectional equilibrium valve 21 can lead to the A hydraulic fluid port is opened, like this be in hydraulic oil in the first cylinder body plunger cavity 112 will be under the effect of pressure successively along the B hydraulic fluid port of the first unidirectional equilibrium valve 21, the A hydraulic fluid port, first hydraulic fluid port of the first adjustable one-way throttle valve 61, second hydraulic fluid port flows, then enter in the first cylinder body piston cavity 111, along with the piston of first cylinder apparatus 101 constantly moves to the cylinder mouth, be that piston rod 113 moves down gradually, hydraulic oil in the first cylinder body plunger cavity 112 can continuously outflow, and enter piston cavity 111, till piston moves into place; Hydraulic oil in the first cylinder body plunger cavity 112 is in its piston cavity 111 process of flowing, because the unit of piston cavity 111 increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity 112, at piston in cylinder mouth moving process, partial vacuum appears in piston cavity 111, its cavity pressure descends, hydraulic fluid pressure in the accumulator 5 is greater than the pressure of hydraulic oil in the piston cavity 111 at this moment, then accumulator 5 discharges hydraulic oil to the piston cavity 111 of first cylinder body 11, make the hydraulic oil in the piston cavity 111 obtain to replenish, reach balanced until pressure, accumulator 5 is no longer till the piston cavity 111 of first cylinder body 11 discharges hydraulic oil.This process has realized the expansion process of first order door frame 71 and second level door frame 72, owing to can regulate the flow size by the first adjustable one-way throttle valve 61 and the 3rd adjustable one-way throttle valve 63, the hydraulic oil that makes plunger cavity 112 by first cylinder body flow out is evenly slow, thereby has guaranteed that the stretching, extension between first order door frame 71 and the second level door frame 72 is evenly slow.
When needs launch second level door frame 72 and third level door frame 73 mutually, pull selector valve 3, make selector valve 3 forward the B gear to, selector valve 3 is when the B gear, can lead to B from P in the selector valve 3, A can lead to T, the asphalt channel that then is connected the 4th adjustable one-way throttle valve 64 is communicated with, part hydraulic oil can flow to the B hydraulic fluid port from the P hydraulic fluid port of selector valve 3, first hydraulic fluid port from the 4th adjustable one-way throttle valve 64 flows into the control port that second hydraulic fluid port flows out into the second unidirectional equilibrium valve 22 again, after the control port of the second unidirectional equilibrium valve 22 has hydraulic oil to enter, the passage that the B hydraulic fluid port of the second unidirectional equilibrium valve 22 can lead to the A hydraulic fluid port is opened, like this be in hydraulic oil in the second cylinder body plunger cavity 122 will be under the effect of pressure successively along the B hydraulic fluid port of the second unidirectional equilibrium valve 22, the A hydraulic fluid port, first hydraulic fluid port of the second adjustable one-way throttle valve 62, second hydraulic fluid port flows, then enter in the second cylinder body piston cavity 121, along with the piston of second cylinder apparatus 102 constantly moves to the cylinder mouth, be that piston rod 123 moves down gradually, hydraulic oil in the second cylinder body plunger cavity 122 can continuously outflow, and enter piston cavity 121, till piston moves into place; Hydraulic oil in the second cylinder body plunger cavity 122 is in its piston cavity 121 process of flowing, because the unit of piston cavity 121 increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity 122, at piston in cylinder mouth moving process, partial vacuum appears in piston cavity 121, its cavity pressure descends, hydraulic fluid pressure in the accumulator 5 is greater than the pressure of hydraulic oil in the piston cavity 121 at this moment, then accumulator 5 discharges hydraulic oil to the piston cavity 121 of second cylinder body, make the hydraulic oil in the piston cavity 121 obtain to replenish, reach balanced until pressure, accumulator 5 is no longer till the piston cavity 121 of second cylinder body discharges hydraulic oil.This process has realized the expansion process of second level door frame 72 and third level door frame 73, owing to can regulate the flow size by the second adjustable one-way throttle valve 62 and the 4th adjustable one-way throttle valve 64, the hydraulic oil that makes plunger cavity 122 by second cylinder body flow out is evenly slow, thereby has guaranteed that the stretching, extension between second level door frame 72 and the third level door frame 73 is evenly slow.
In the time door frame will being shunk, pull selector valve 5, make selector valve 5 forward neutral position to, selector valve 5 is when neutral position, and A, B, T three hydraulic fluid ports are communicated with, and the P hydraulic fluid port ends; Third level door frame 73 is shunk to second level door frame 72, under the effect of door frame and suspender deadweight, the piston of second cylinder apparatus 102 under the ejection of piston rod 123 in cylinder portion move, then the piston cavity 121 of second cylinder body is squeezed, after the hydraulic oil supercharging in the piston cavity 121 greater than the hydraulic oil in the plunger cavity 122, thereby wash the one-way cock of the second unidirectional equilibrium valve 22 and the second adjustable one-way throttle valve 62 open, hydraulic oil in the piston cavity 121 flows to plunger cavity 122, because the unit of piston cavity 121 increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity 122, the hydraulic oil that is flowed out by piston cavity 121 can not be contained in plunger cavity 122 fully, then the part hydraulic oil that flows out of piston cavity 121 can directly enter accumulator 5, or wash open the 4th adjustable one-way throttle valve 64 valve after selector valve 3 wash the valve of one-way valve 4 again open and flow into accumulator 5; Same, with second level door frame 72 when first order door frame 71 shrinks, under the effect of door frame and suspender deadweight, the piston of first cylinder apparatus 101 under the ejection of piston rod 113 in cylinder portion move, then the piston cavity 111 of first cylinder body is squeezed, after the hydraulic oil supercharging in the piston cavity 111 greater than the hydraulic oil in the plunger cavity 112, thereby wash the one-way cock of the first unidirectional equilibrium valve 21 and the first adjustable one-way throttle valve 61 open, hydraulic oil in the piston cavity 111 flows to plunger cavity 112, because the unit of piston cavity 111 increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity 112, the hydraulic oil that is flowed out by piston cavity 111 can not be contained in plunger cavity 112 fully, then the part hydraulic oil that flows out of piston cavity 111 can directly enter accumulator 5, or wash open the 3rd adjustable one-way throttle valve 63 valve after selector valve 3 wash the valve of one-way valve 4 again open and flow into accumulator 5; Like this, after three grades of door frames shrink, the piston cavity 111,121 of first cylinder body 11 and second cylinder body 12 is compressed, and plunger cavity 112,122 is in maximum rating, and a hydraulic oil part that is flowed out by piston cavity 111,121 enters plunger cavity 112,122 parts and is stored in the accumulator 5.For this reason, hydraulic pressure installation has realized controlling stretching/contracting of three grades of door frames under unpowered state.
Claims (1)
1. control three grades of unpowered totally-enclosed hydraulic pressure installation that door frame is stretched/contracted for one kind, it is characterized in that: it comprises two cylinder apparatus, two unidirectional equilibrium valves, a selector valve, an one-way valve, an accumulator, four adjustable one-way throttle valves;
First cylinder apparatus is contained between telescopic first order door frame and the second level door frame, first cylinder body is hung in first order door frame, the first piston boom end is fixed in the bottom of second level door frame, first cylinder body is provided with piston cavity and plunger cavity, and the unit of piston cavity increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity;
Second cylinder apparatus is contained between telescopic second level door frame and the third level door frame, second cylinder body is hung in the door frame of the second level, second piston rod end is fixed in the bottom of third level door frame, second cylinder body is provided with piston cavity and plunger cavity, and the unit of piston cavity increase and decrease volume is greater than the unit increase and decrease volume of plunger cavity;
The first unidirectional equilibrium valve is provided with A hydraulic fluid port, B hydraulic fluid port and control port, and the A hydraulic fluid port is connected with the first adjustable one-way throttle valve, and the B hydraulic fluid port is connected with the plunger cavity of first cylinder body, and control port is connected with the 3rd adjustable one-way throttle valve;
The second unidirectional equilibrium valve is provided with A hydraulic fluid port, B hydraulic fluid port and control port, and the A hydraulic fluid port is connected with the second adjustable one-way throttle valve, and the B hydraulic fluid port is connected with the plunger cavity of second cylinder body, and control port is connected with the 4th adjustable one-way throttle valve;
The first adjustable one-way throttle valve is provided with first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port is connected with the A hydraulic fluid port of the first unidirectional equilibrium valve, and second hydraulic fluid port is connected with the piston cavity of first cylinder body;
The second adjustable one-way throttle valve is provided with first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port is connected with the A hydraulic fluid port of the second unidirectional equilibrium valve, and second hydraulic fluid port is connected with the piston cavity of second cylinder body;
The 3rd adjustable one-way throttle valve is provided with first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port is connected with selector valve, and second hydraulic fluid port is connected with the control port of the first unidirectional equilibrium valve;
The 4th adjustable one-way throttle valve is provided with first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port is connected with selector valve, and second hydraulic fluid port is connected with the control port of the second unidirectional equilibrium valve;
Accumulator is connected with second hydraulic fluid port, second hydraulic fluid port of the second adjustable one-way throttle valve, the piston cavity of first cylinder body, the piston cavity of second cylinder body, the one-way valve of the first adjustable one-way throttle valve respectively;
One-way valve is provided with oiler and oil outlet, and oiler is connected with selector valve, and oil outlet is connected with accumulator;
Selector valve is three-position four-way valve, is provided with A, B, T, P four hydraulic fluid ports, and the neutral state is that A, B, T three hydraulic fluid ports are communicated with, and the P hydraulic fluid port ends; A retaining state is that P leads to A, and B leads to T; B retaining state is that P leads to B, and A leads to T; The A hydraulic fluid port is connected with first hydraulic fluid port of the 3rd adjustable one-way throttle valve, and the B hydraulic fluid port is connected with first hydraulic fluid port of the 4th adjustable one-way throttle valve, and the T hydraulic fluid port is connected with the oiler of one-way valve, and the P hydraulic fluid port is connected with the B hydraulic fluid port of the second unidirectional equilibrium valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420097033 CN2758540Y (en) | 2004-10-09 | 2004-10-09 | Unpowered full-closed hydraulic device for controlling three-stage portal expansion/contraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420097033 CN2758540Y (en) | 2004-10-09 | 2004-10-09 | Unpowered full-closed hydraulic device for controlling three-stage portal expansion/contraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2758540Y true CN2758540Y (en) | 2006-02-15 |
Family
ID=36078682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420097033 Expired - Fee Related CN2758540Y (en) | 2004-10-09 | 2004-10-09 | Unpowered full-closed hydraulic device for controlling three-stage portal expansion/contraction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2758540Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105171753A (en) * | 2015-09-11 | 2015-12-23 | 武汉船用机械有限责任公司 | Multifunctional manipulator |
-
2004
- 2004-10-09 CN CN 200420097033 patent/CN2758540Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105171753A (en) * | 2015-09-11 | 2015-12-23 | 武汉船用机械有限责任公司 | Multifunctional manipulator |
| CN105171753B (en) * | 2015-09-11 | 2017-04-05 | 武汉船用机械有限责任公司 | A kind of multifunction manipulator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |