CN110219849A - A kind of Multi-stage cylinder quickly plays perpendicular recovery control system - Google Patents

Abstract

A multi-stage cylinder rapid erection and recovery control system, which relates to the field of special vehicle erection hydraulic system design; includes a multi-stage erection hydraulic cylinder, a reverse cavity balance valve, a positive cavity balance valve, a rapid recovery bypass, an electromagnetic switch valve, the first A proportional multi-way valve and a second proportional multi-way valve; wherein, the positive cavity balance valve includes a filter screen, a first damper, a second damper, a one-way valve, a one-way throttle valve and a safety valve; The combination of road valves controls the multi-stage hydraulic cylinders, which solves the contradiction between rapid vertical erection with large flow and precise straightening with small flow in place, and realizes rapid vertical erection and precise straightening of the launching vehicle; a bypass rapid recovery function module is set to avoid The pressure suppression phenomenon in the reverse cavity during the recovery process realizes the rapid recovery of the launch vehicle; the variable load balance technology is used to control the opening size of the positive cavity balance valve through load pressure feedback, and the flow rate that changes with the load is generated to control the recovery speed and avoid rapid The risk of large-tonnage loads falling during recovery ensures system safety.

Description

A Multi-stage Cylinder Rapid Erection Recovery Control System

technical field

The invention relates to the design field of a vertical hydraulic system for a special vehicle, in particular to a multi-stage cylinder rapid vertical recovery control system.

Background technique

With the requirements of rapid response to the actual combat of the new generation of weapons, and with the development of detection technology and the improvement of strike accuracy, the requirements for the rapid erection ability and rapid return to level ability of the vertical erection launch vehicle are getting higher and higher. Performance will directly determine the combat effectiveness of the weapon system.

Simultaneously, in the action processes such as fast erecting and withdrawing, all face two important problems of the stability and safety of fast action. In the early stage of the rapid erection process, the hydraulic system responsible for providing erection power performs the erection action with a large flow rate, and the load obtains a faster erection speed. In the later stage of the erection process, the load speed must gradually drop to zero, and at this During the process, the load has been erected to the center of gravity, and it is easy to cause load vibration. If the flow rate is unreasonably controlled, the problem of overshooting when the erection is in place is easy to occur, which will seriously affect the safety of the erection action. At the same time, due to the different areas of the positive and negative chambers of the hydraulic cylinder, the reverse chamber generates back pressure during the recovery process, which reduces the recovery speed. In the process of fast recovery of large-tonnage loads, when the load exceeds the center of gravity, it will cause stalling and descent, resulting in safety accidents of varying degrees.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provide a multi-stage cylinder rapid erection recovery control system, which realizes the precise and rapid erection and rapid recovery action of the erection hydraulic cylinder, and at the same time improves the hydraulic system during the rapid action process. stability and safety.

Above-mentioned purpose of the present invention is achieved by following technical scheme:

A multi-stage cylinder rapid erection and recovery control system, including a multi-stage erection hydraulic cylinder, a reverse chamber balance valve, a positive chamber balance valve, a rapid recovery bypass, an electromagnetic switch valve, a first proportional multi-way valve and a second proportional multi-way valve. Road valve;

The oil outlet of the anti-cavity balance valve is connected with the anti-chamber of the multi-stage erecting hydraulic cylinder; The anti-cavity connection port of the second proportional multi-way valve is connected; the control port of the anti-cavity balance valve is connected with the oil inlet port of the positive cavity balance valve, the positive cavity connection port of the first proportional multi-way valve and the port of the second proportional multi-way valve respectively. The connection port of the positive cavity is connected;

The oil outlet of the positive cavity balance valve is respectively connected with the positive cavity of the multistage erecting hydraulic cylinder and the oil inlet of the quick recovery bypass; the oil inlet of the positive cavity balance valve is respectively connected with the control port of the reverse cavity balance valve, the first The positive cavity connection port of the proportional multi-way valve is connected with the positive cavity connection port of the second proportional multi-way valve; The connection port communicates with the anti-cavity connection port of the second proportional multi-way valve;

The oil inlet of the quick recovery bypass is respectively connected with the positive chamber of the multi-stage erecting hydraulic cylinder and the oil outlet of the positive cavity balance valve; the oil outlet of the quick recovery bypass is connected with the external pressure oil return port T; the quick recovery bypass The control port of the circuit is connected with the electromagnetic switch valve;

Both the positive cavity connection port of the first proportional multi-way valve and the positive cavity connection port of the second proportional multi-way valve are connected with the positive cavity balance valve; the reverse cavity connection port of the first proportional multi-way valve and the The connection port of the anti-cavity is connected with the balance valve of the anti-chamber; the oil supply port of the first proportional multi-way valve and the oil supply port of the second proportional multi-way valve are connected with the external pressure oil supply port P; the first proportional multi-way valve The oil drain port of the second proportional multi-way valve and the oil drain port of the second proportional multi-way valve are both connected to the oil return port T of the external pressure oil.

In the above-mentioned multi-stage cylinder rapid erection recovery control system, the reverse chamber balance valve is the same as the positive chamber balance valve; the first proportional multi-way valve is the same as the second proportional multi-way valve.

In the above-mentioned multi-stage cylinder rapid erection recovery control system, the positive cavity balance valve includes a filter screen, a first damper, a second damper, a one-way valve, a one-way throttle valve and a safety valve; wherein, the filter screen One end of the filter screen is respectively connected with the oil inlet port of the anti-cavity balance valve, the anti-cavity connection port of the first proportional multi-way valve and the anti-cavity connection port of the second proportional multi-way valve; the other end of the filter screen is connected with one end of the first damping ; The other end of the first damping is respectively connected with one end of the second damping and the control port of the one-way throttle valve; the other end of the second damping is connected with the oil inlet of the one-way valve; the cut-off port of the one-way valve is connected with the safety valve The control port of the one-way throttle valve is connected with the control port of the anti-cavity balance valve, the positive cavity connection port of the first proportional multi-way valve and the positive cavity connection port of the second proportional multi-way valve respectively; The oil outlet of the throttle valve is communicated with the positive chamber of the multi-stage erecting hydraulic cylinder; the oil outlet of the safety valve is communicated with the oil outlet of the one-way throttle valve.

In the above-mentioned multi-stage cylinder rapid erection recovery control system, the multi-stage erection hydraulic cylinder is a three-stage hydraulic cylinder; the multi-stage erection hydraulic cylinder adopts an upside-down method.

In the above-mentioned multi-stage cylinder rapid erection recovery control system, the erection process of the multi-stage erection hydraulic cylinder is as follows:

The initial state of the multi-stage erecting hydraulic cylinder is horizontal;

The external pressure oil supply port P supplies oil to the first proportional multi-way valve and the second proportional multi-way valve; the first proportional multi-way valve and the second proportional multi-way valve respectively output oil through the connection port of the positive cavity; They are respectively output to the oil inlet port of the positive cavity balance valve and the control port of the negative cavity balance valve; the oil flowing into the positive cavity balance valve flows into the positive cavity of the multi-stage vertical hydraulic cylinder through the oil outlet of the positive cavity balance valve; The oil in the balance valve will open the anti-cavity balance valve to form the positive cavity and reverse cavity circuit of the multi-stage erecting hydraulic cylinder; the multi-stage erecting hydraulic cylinder will quickly erect;

When the load of the multi-stage erecting hydraulic cylinder exceeds the center of gravity during the erecting process, the multi-stage erecting hydraulic cylinder stalls during erection; the anti-chamber balance valve realizes variable load balance by adjusting the flow of oil to ensure a stable erecting process;

When the multi-stage erecting hydraulic cylinder is erected to an angle of 83° with the horizontal plane, only the first proportional multi-way valve oil supply is reserved, and the vertical speed of the multi-stage erecting hydraulic cylinder is reduced to achieve precise straightening of the multi-stage erecting hydraulic cylinder ;

When the internal oil pressure of the anti-cavity balance valve is too large, open the safety valve in the anti-cavity balance valve to drain the oil, so that the pressure of the anti-cavity balance valve does not exceed the limit value.

In the above-mentioned multi-stage cylinder rapid erecting recovery control system, the process of returning the multi-stage erecting hydraulic cylinder to leveling is:

In the initial state, the multi-stage erecting hydraulic cylinder is in the vertical state;

The external pressure oil supply port P supplies oil to the first proportional multi-way valve and the second proportional multi-way valve; the first proportional multi-way valve and the second proportional multi-way valve respectively output oil through the reverse chamber connection port; They are respectively output to the oil inlet port of the anti-cavity balance valve and the control port of the positive cavity balance valve; the oil flowing into the anti-cavity balance valve flows into the anti-chamber of the multi-stage vertical hydraulic cylinder through the oil outlet of the anti-cavity balance valve; The oil in the valve opens the positive cavity balance valve to form the positive cavity and negative cavity circuit of the multi-stage vertical hydraulic cylinder; the multi-stage vertical vertical hydraulic cylinder quickly returns to level;

When the load of the multi-stage erecting hydraulic cylinder is over the center of gravity in the process of returning to level, the multi-stage erecting hydraulic cylinder will stall when returning to level; the positive chamber balance valve realizes variable load balance by adjusting the flow of oil to ensure a smooth return to level process;

When the multi-stage erecting hydraulic cylinder returns to level to an angle of 5°-7° with the horizontal plane, only the first proportional multi-way valve oil supply is reserved, and the return-to-level speed of the multi-stage erecting hydraulic cylinder is decelerated to realize the multi-stage erecting hydraulic cylinder Accurate return to level;

When the internal oil pressure of the positive cavity balance valve is too high, open the safety valve in the positive cavity balance valve to drain the oil so that the pressure of the positive cavity balance valve does not exceed the limit value;

In the process of returning to leveling, the quick recovery bypass is opened through the electromagnetic switch valve; a total of two return oil circuits of the quick recovery bypass and the positive cavity balance valve are opened; the return to leveling speed is increased.

In the above-mentioned multi-stage cylinder rapid erection recovery control system, both the first proportional multi-way valve and the second proportional multi-way valve realize automatic control of oil supply.

In the above-mentioned multi-stage cylinder rapid erection recovery control system, the erection time of the multi-stage erection hydraulic cylinder is less than or equal to 50s; the vertical accuracy after erection is less than or equal to ±1°.

In the aforementioned multi-stage cylinder rapid erection recovery control system, the total oil supply volume of the first proportional multi-way valve and the second proportional multi-way valve is 50-280 L/min.

In the above-mentioned multi-stage cylinder rapid erection recovery control system, during the erection process of the multi-stage erection hydraulic cylinder:

S1. When the angle between the multi-stage vertical hydraulic cylinder and the horizontal is greater than or equal to 0° and less than 48°, the oil supply volume of the first proportional multi-way valve is 160L/min; the oil supply volume of the second proportional multi-way valve is 120L/min;

S2. When the angle between the multi-stage vertical hydraulic cylinder and the horizontal is greater than or equal to 48° and less than 51°, the oil supply of the first proportional multi-way valve is 100-160L/min; the oil supply of the second proportional multi-way valve The volume is 80-120L/min;

S3. When the angle between the multi-stage vertical hydraulic cylinder and the horizontal is greater than or equal to 51° and less than 67°, the oil supply volume of the first proportional multi-way valve is 100L/min; the oil supply volume of the second proportional multi-way valve is 80L/min;

S4. When the angle between the multi-stage vertical hydraulic cylinder and the horizontal is greater than or equal to 67° and less than 83°, the oil supply of the first proportional multi-way valve is 50-100L/min; the oil supply of the second proportional multi-way valve The volume is 0-80L/min;

S5. When the angle between the multi-stage vertical hydraulic cylinder and the horizontal is greater than or equal to 83° and less than or equal to 90°, the oil supply volume of the first proportional multi-way valve is 50L/min; the second proportional multi-way valve does not supply oil.

Compared with the prior art, the present invention has the following advantages:

(1) In the present invention, the erection flow control adopts a combination of two multi-way valves to control the multi-stage hydraulic cylinder, which solves the contradiction between rapid erection with large flow rate and precise straightening with small flow rate in place, and realizes rapid erection and precise alignment of the launching vehicle. straighten;

(2) The present invention is equipped with a bypass fast recovery function module, which avoids the phenomenon of anti-cavity pressure suppression in the recovery process, and realizes the rapid recovery of the launch vehicle;

(3) The present invention is equipped with a bypass fast recovery function module, which avoids the phenomenon of anti-cavity pressure suppression in the recovery process, and realizes the rapid recovery of the launch vehicle;

(4) The present invention adopts variable load balance technology, controls the opening size of the positive chamber balance valve through load pressure feedback, and generates a flow rate that varies with the load to control the recovery speed, avoiding the risk of large-tonnage load drop during rapid recovery, and ensuring the system Safety.

Description of drawings

Fig. 1 is a schematic diagram of the erection recovery control system of the present invention;

Fig. 2 is a schematic diagram of the pipeline of the positive chamber balance valve of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

The invention provides a multi-stage cylinder rapid erection recovery control system, which improves the stability and safety of the hydraulic system in the rapid action process.

Figure 1 is a schematic diagram of the erection recovery control system, which includes multi-stage erection hydraulic cylinder 1, reverse cavity balance valve 2, positive cavity balance valve 3, quick recovery bypass 4, electromagnetic switch valve 5, the first A proportional multi-way valve 6 and a second proportional multi-way valve 7;

The oil outlet of the anti-cavity balance valve 2 communicates with the anti-cavity of the multi-stage erecting hydraulic cylinder 1; The anti-cavity connection port communicates with the anti-cavity connection port of the second proportional multi-way valve 7; the control port of the anti-cavity balance valve 2 is respectively connected with the oil inlet port of the positive cavity balance valve 3 and the positive cavity of the first proportional multi-way valve 6 The port is communicated with the positive chamber connection port of the second proportional multi-way valve 7;

The oil outlet of the positive cavity balance valve 3 is connected with the positive cavity of the multi-stage erecting hydraulic cylinder 1 and the oil inlet of the quick recovery bypass 4 respectively; The control port, the positive cavity connection port of the first proportional multi-way valve 6 and the positive cavity connection port of the second proportional multi-way valve 7 are connected; the control port of the positive cavity balance valve 3 is connected with the oil inlet, The anti-cavity connection port of the first proportional multi-way valve 6 communicates with the anti-cavity connection port of the second proportional multi-way valve 7;

The oil inlet of the quick recovery bypass 4 is connected with the positive chamber of the multi-stage erecting hydraulic cylinder 1 and the oil outlet of the positive cavity balance valve 3 respectively; the oil outlet of the quick recovery bypass 4 is connected with the external pressure oil return port T ; The control port of the quick recovery bypass 4 communicates with the electromagnetic switch valve 5;

The positive cavity connection port of the first proportional multi-way valve 6 and the positive cavity connection port of the second proportional multi-way valve 7 are all communicated with the positive cavity balance valve 3; the negative cavity connection port of the first proportional multi-way valve 6 and the second proportional The anti-cavity connection port of the multi-way valve 7 is connected with the anti-cavity balance valve 2; the oil supply port of the first proportional multi-way valve 6 and the oil supply port of the second proportional multi-way valve 7 are connected with the external pressure oil supply port P Communication; the oil drain port of the first proportional multi-way valve 6 and the oil drain port of the second proportional multi-way valve 7 are both connected with the external pressure oil return port T. Both the first proportional multi-way valve 6 and the second proportional multi-way valve 7 realize automatic control of oil supply. The reverse cavity balance valve 2 is the same as the positive cavity balance valve 3; the first proportional multi-way valve 6 and the second proportional multi-way valve 7 are the same. The erecting time of the multistage erecting hydraulic cylinder 1 is less than or equal to 50s; the vertical accuracy after the erecting is completed is less than or equal to ±1°.

As shown in Figure 2, it is a schematic diagram of the pipeline of the positive cavity balance valve. It can be seen from the figure that the positive cavity balance valve 3 includes a filter screen 8, a first damper 9, a second damper 10, a one-way valve 11, a one-way throttle valve 12 and Safety valve 13; wherein, one end of strainer 8 communicates with the oil inlet of anti-cavity balance valve 2, the anti-cavity connection port of first proportional multi-way valve 6 and the anti-cavity connection port of second proportional multi-way valve 7; The other end of the strainer 8 is connected with one end of the first damper 9; the other end of the first damper 9 is respectively connected with one end of the second damper 10 and the control port of the one-way throttle valve 12; the other end of the second damper 10 is connected with The oil inlet of the one-way valve 11 is connected; the cut-off port of the one-way valve 11 is connected with the control port of the safety valve 13; The positive cavity connecting port of the multi-way valve 6 is connected with the positive cavity connecting port of the second proportional multi-way valve 7; the oil outlet of the one-way throttle valve 12 is connected with the positive cavity of the multi-stage erecting hydraulic cylinder 1; the safety valve 13 The oil outlet of the valve communicates with the oil outlet of the one-way throttle valve 12.

The multi-stage erecting hydraulic cylinder 1 is a three-stage hydraulic cylinder; the multi-stage erecting hydraulic cylinder 1 adopts an upside down method. Protrude according to the order of the third, second and first-level tubes when erecting. During the erecting process, the third and second cylinders of the multi-stage erecting hydraulic cylinder 1 adopt the form of anti-cavity damping small holes, and the anti-cavity hydraulic oil flows back to the oil tank through the small holes on the third-stage cylinder, that is, when the multi-stage vertical hydraulic cylinder When the third-stage cylinder of cylinder 1 extends to the end of the stroke, the small hole gradually decreases, and the pressure of the reverse chamber gradually increases, so that the pressure of the positive chamber also rises accordingly, reducing the sudden pressure change when changing stages, and playing the role of throttling and buffering. The stage change of the second and first stage cylinders of the erecting hydraulic cylinder adopts the form of positive cavity damping. The annular gap between the damping sleeve and the floating throttle ring is gradually reduced, causing the pressure of the positive cavity to gradually increase, and reducing the sudden pressure change during the stage change. When the vertical arm is raised to 90°, it is controlled by a liquid pendulum, and when the vertical arm is lowered to 0°, it is controlled by a proximity switch. There is a balance valve in the front and back chambers of the erector, which has the functions of load balancing, locking and overpressure unloading.

The erecting process of the multi-stage erecting hydraulic cylinder 1 is as follows:

The initial state of the multi-stage erecting hydraulic cylinder 1 is a horizontal state;

The external pressure oil supply port P supplies oil to the first proportional multi-way valve 6 and the second proportional multi-way valve 7; the first proportional multi-way valve 6 and the second proportional multi-way valve 7 respectively output oil through the positive cavity connection port; After summarizing, the oil is output to the oil inlet port of the positive cavity balance valve 3 and the control port of the reverse cavity balance valve 2; the oil flowing into the positive cavity balance valve 3 flows into the multi-stage erection hydraulic pressure The positive chamber of the cylinder 1; the oil flowing into the counter chamber balance valve 2 opens the counter chamber balance valve 2 to form the positive chamber and reverse chamber circuits of the multi-stage erecting hydraulic cylinder 1; the multi-stage erecting hydraulic cylinder 1 quickly erects;

When the load of the multi-stage erecting hydraulic cylinder 1 exceeds the center of gravity during the erecting process, the multi-stage erecting hydraulic cylinder 1 stalls during erection; the anti-chamber balance valve 2 realizes variable load balance by adjusting the flow of oil to ensure erection The process is stable;

When the multi-stage erecting hydraulic cylinder 1 is erected to an angle of 83° with the horizontal plane, only the first proportional multi-way valve 6 is reserved for oil supply, and the erecting speed of the multi-stage erecting hydraulic cylinder 1 is decelerated to realize the multi-stage erecting hydraulic cylinder 1 precise straightening;

When the internal oil pressure of the anti-cavity balance valve 2 is too high, the safety valve 13 in the anti-cavity balance valve 2 is opened to drain the oil, so that the pressure of the anti-cavity balance valve 2 does not exceed the limit value.

During the erecting process of the multi-stage erecting hydraulic cylinder 1:

S1. When the angle between the multi-stage erecting hydraulic cylinder 1 and the horizontal is greater than or equal to 0° and less than 48°, the oil supply volume of the first proportional multi-way valve 6 is 160L/min; the oil supply volume of the second proportional multi-way valve 7 The oil volume is 120L/min;

S2. When the angle between the multi-stage vertical hydraulic cylinder 1 and the horizontal is greater than or equal to 48° and less than 51°, the oil supply of the first proportional multi-way valve 6 is 100-160L/min; the second proportional multi-way valve 7 The oil supply volume is 80-120L/min;

S3. When the angle between the multi-stage erecting hydraulic cylinder 1 and the horizontal is greater than or equal to 51° and less than 67°, the oil supply volume of the first proportional multi-way valve 6 is 100 L/min; the oil supply volume of the second proportional multi-way valve 7 is The oil volume is 80L/min;

S4. When the angle between the multi-stage vertical hydraulic cylinder 1 and the horizontal is greater than or equal to 67° and less than 83°, the oil supply of the first proportional multi-way valve 6 is 50-100L/min; the second proportional multi-way valve 7 The oil supply volume is 0-80L/min;

S5. When the angle between the multi-stage vertical hydraulic cylinder 1 and the horizontal is greater than or equal to 83° and less than or equal to 90°, the oil supply of the first proportional multi-way valve 6 is 50L/min; the second proportional multi-way valve 7 is not Fuel.

The 1-back leveling process of the multi-stage vertical hydraulic cylinder is as follows:

In the initial state, the multi-stage erecting hydraulic cylinder 1 is in a vertical state;

The external pressure oil supply port P supplies oil to the first proportional multi-way valve 6 and the second proportional multi-way valve 7; the first proportional multi-way valve 6 and the second proportional multi-way valve 7 respectively output oil through the anti-cavity connection port; After summarizing, the oil is respectively output to the oil inlet port of the anti-chamber balance valve 2 and the control port of the positive chamber balance valve 3; 1; the oil flowing into the positive cavity balance valve 3 opens the positive cavity balance valve 3 to form the positive cavity and reverse cavity circuits of the multi-stage erecting hydraulic cylinder 1; the multi-stage erecting hydraulic cylinder 1 quickly returns to level;

When the load of the multi-stage erecting hydraulic cylinder 1 exceeds the center of gravity during the process of returning to level, the multi-stage erecting hydraulic cylinder 1 returns to level and stalls; the positive chamber balance valve 3 realizes variable load balance by adjusting the flow of oil to ensure return to level The process is stable;

When the multi-stage erecting hydraulic cylinder 1 returns to level to an angle of 5°-7° with the horizontal plane, only the first proportional multi-way valve 6 is reserved for oil supply, and the speed of the multi-stage erecting hydraulic cylinder 1 is decelerated to achieve multi-stage erection. Vertical hydraulic cylinder 1 is accurately leveled;

When the internal oil pressure of the positive cavity balance valve 3 is too high, open the safety valve 13 in the positive cavity balance valve 3 to drain the oil, so that the pressure of the positive cavity balance valve 3 does not exceed the limit value;

During the back-leveling process, the quick recovery bypass 4 is opened through the electromagnetic switch valve 5; two oil return circuits, the quick recovery bypass 4 and the positive cavity balance valve 3, are opened; the recovery speed is effectively accelerated to ensure the rapidity of the back-leveling process.

The total oil supply volume of the first proportional multi-way valve 6 and the second proportional multi-way valve 7 is 50-280 L/min.

In the erecting process, negative loads can occur in the erecting and lowering processes, so balance valves are provided in the positive and negative chambers of the multi-stage erecting hydraulic cylinder 1 . The design of the balance valve adopts a large opening area ratio structure and separates the safety valve spool from the balance valve main spool, which effectively reduces the influence of load pressure fluctuations on the stability of the spool during the erection process and improves the safety of the projectile after it is in place. The position holding time ensures the rapidity and stability of the erecting system. The vertical reversing valves are all in the O-type neutral position, which forms a double insurance with the locking function of the balance valve to ensure the missile stays reliably.

The erection flow control of the present invention adopts the combination of the first proportional multi-way valve 6 and the second proportional multi-way valve 7 to control the multi-stage hydraulic cylinder, which solves the contradiction between rapid erection with large flow rate and precise straightening with small flow rate in place, and realizes multi-stage hydraulic cylinders. Rapid erection and precise straightening of the erecting hydraulic cylinder 1; the hydraulic system is equipped with a rapid recovery bypass 4, which avoids the pressure suppression phenomenon in the reverse cavity during the recovery process, and realizes the rapid recovery of the multi-stage vertical erecting hydraulic cylinder 1. The invention adopts variable load balance technology, controls the opening size of the positive chamber balance valve through load pressure feedback, generates a flow rate that varies with the load, controls the recovery speed, avoids the risk of large-tonnage load drop during rapid recovery, and ensures system safety.

The content that is not described in detail in the description of the present invention belongs to the well-known technology of those skilled in the art.

Claims (10)

1. a kind of Multi-stage cylinder quickly plays perpendicular recovery control system, it is characterised in that: play perpendicular hydraulic cylinder (1) including multistage, anti-chamber is put down It weighs valve (2), positive chamber balanced valve (3), quickly recycling bypass (4), electromagnetic switch valve (5), the first proportional multi-way valve (6) and the second ratio Example multi-way valve (7)；

The oil outlet of anti-chamber balanced valve (2) is connected to the multistage anti-chamber for playing perpendicular hydraulic cylinder (1)；The oil inlet of first balanced valve (2) Respectively with the anti-chamber connector and the second proportional multi-way valve (7) of the control mouth of positive chamber balanced valve (3), the first proportional multi-way valve (6) Anti- chamber connector connection；The control mouth of anti-chamber balanced valve (2) is more with the oil inlet of positive chamber balanced valve (3), the first ratio respectively The positive chamber connector connection of the positive chamber connector and the second proportional multi-way valve (7) of road valve (6)；

The oil inlet with the multistage positive chamber for playing perpendicular hydraulic cylinder (1), quickly recycling bypass (4) respectively of the oil outlet of positive chamber balanced valve (3) Mouth connection；The oil inlet of positive chamber balanced valve (3) respectively with the control mouth of anti-chamber balanced valve (2), the first proportional multi-way valve (6) just The connection of the positive chamber connector of chamber connector and the second proportional multi-way valve (7)；The control mouth of positive chamber balanced valve (3) is flat with anti-chamber respectively Oil inlet, the anti-chamber connector of the first proportional multi-way valve (6) and the anti-chamber connector of the second proportional multi-way valve (7) of weighing apparatus valve (2) Connection；

Quickly the oil inlet of recycling bypass (4) is fuel-displaced with the multistage positive chamber for playing perpendicular hydraulic cylinder (1) and positive chamber balanced valve (3) respectively Mouth connection；Quickly the oil outlet of recycling bypass (4) is connected to external pressure oil oil return inlet T；The quickly control mouth of recycling bypass (4) It is connected to electromagnetic switch valve (5)；

The positive chamber connector of first proportional multi-way valve (6) and the positive chamber connector of the second proportional multi-way valve (7) are balanced with positive chamber Valve (3) connection；The anti-chamber connector of the anti-chamber connector of first proportional multi-way valve (6) and the second proportional multi-way valve (7) is and instead Chamber balanced valve (2) connection；The oil-feed port of the oil-feed port of first proportional multi-way valve (6) and the second proportional multi-way valve (7) with outside Pressure oil is connected into supply mouth P；The drain tap of the drain tap of first proportional multi-way valve (6) and the second proportional multi-way valve (7) with The connection of external pressure oil oil return inlet T.

2. a kind of Multi-stage cylinder according to claim 1 quickly plays perpendicular recovery control system, it is characterised in that: the anti-chamber is flat It weighs valve (2) and positive chamber balanced valve (3) is identical；First proportional multi-way valve (6) and the second proportional multi-way valve (7) are identical.

3. a kind of Multi-stage cylinder according to claim 2 quickly plays perpendicular recovery control system, it is characterised in that: the positive chamber is flat Weighing apparatus valve (3) includes strainer (8), the first damping (9), the second damping (10), check valve (11), one-way throttle valve (12) and safety valve (13)；Wherein, one end of strainer (8) connects with the anti-chamber of the oil inlet of anti-chamber balanced valve (2), the first proportional multi-way valve (6) respectively The connection of the anti-chamber connector of interface and the second proportional multi-way valve (7)；One end of the other end of strainer (8) and the first damping (9) connects It connects；The other end of first damping (9) is connect with the control mouth of one end of the second damping (10) and one-way throttle valve (12) respectively；The The other end of two dampings (10) is connected to the oil inlet of check valve (11)；The cut-off mouth of check valve (11) and the control of safety valve (13) Donsole connection；The oil inlet of one-way throttle valve (12) respectively with the control mouth of anti-chamber balanced valve (2), the first proportional multi-way valve (6) Positive chamber connector and the second proportional multi-way valve (7) positive chamber connector connection；The oil outlet and multistage of one-way throttle valve (12) Play the positive chamber connection of perpendicular hydraulic cylinder (1)；The oil outlet of safety valve (13) is connected to the oil outlet of one-way throttle valve (12).

4. a kind of Multi-stage cylinder according to claim 3 quickly plays perpendicular recovery control system, it is characterised in that: the multistage Playing perpendicular hydraulic cylinder (1) is three-level hydraulic cylinder；Multistage plays perpendicular hydraulic cylinder (1) and uses upside-down mounting mode.

5. a kind of Multi-stage cylinder according to claim 4 quickly plays perpendicular recovery control system, it is characterised in that: the multistage It plays perpendicular hydraulic cylinder (1) and plays perpendicular process are as follows:

It is horizontality that multistage, which plays perpendicular hydraulic cylinder (1) original state,；

External pressure oil is into supply mouth P to the first proportional multi-way valve (6) and the second proportional multi-way valve (7) fuel feeding；First ratio is more Road valve (6) and the second proportional multi-way valve (7) pass through positive chamber connector output oil respectively；Oil Shu Chu not be put down to positive chamber after summarizing Weigh the oil inlet of valve (3) and the control mouth of anti-chamber balanced valve (2)；The oil of positive chamber balanced valve (3) is flowed into through positive chamber balanced valve (3) Oil outlet flows into the multistage positive chamber for playing perpendicular hydraulic cylinder (1)；The oil for flowing into anti-chamber balanced valve (2) opens anti-chamber balanced valve (2), shape At the multistage positive chamber for playing perpendicular hydraulic cylinder (1), anti-chamber circuit；Multistage plays quick rise of perpendicular hydraulic cylinder (1) and erects；

When multistage plays perpendicular hydraulic cylinder (1) overload heart moment during playing perpendicular, multistage plays perpendicular hydraulic cylinder (1) and plays perpendicular stall； Anti- chamber balanced valve (2) realizes varying load balance, has guaranteed that perpendicular process is steady by the size of adjusting oil liquid flow；

When multistage rise perpendicular hydraulic cylinder (1) rise erect to 83 ° of angle with horizontal plane when, only retain the first proportional multi-way valve (6) fuel feeding, it is more Grade plays perpendicular hydraulic cylinder (1) and plays perpendicular speed reduction, realizes that multistage plays the accurate straightening of perpendicular hydraulic cylinder (1)；

When anti-chamber balanced valve (2) internal oil pressure is excessive, the safety valve (13) in anti-chamber balanced valve (2) is opened, draining is realized anti- Chamber balanced valve (2) pressure is no more than limiting value.

6. a kind of Multi-stage cylinder according to claim 5 quickly plays perpendicular recovery control system, it is characterised in that: the multistage It plays perpendicular hydraulic cylinder (1) and returns flat process are as follows:

It is vertical state that original state multistage, which plays perpendicular hydraulic cylinder (1),；

External pressure oil is into supply mouth P to the first proportional multi-way valve (6) and the second proportional multi-way valve (7) fuel feeding；First ratio is more Road valve (6) and the second proportional multi-way valve (7) pass through anti-chamber connector output oil respectively；Oil Shu Chu not be put down to anti-chamber after summarizing Weigh the oil inlet of valve (2) and the control mouth of positive chamber balanced valve (3)；The oil of anti-chamber balanced valve (2) is flowed into through anti-chamber balanced valve (2) Oil outlet flows into the multistage anti-chamber for playing perpendicular hydraulic cylinder (1)；The oil for flowing into positive chamber balanced valve (3) opens positive chamber balanced valve (3), shape At the multistage positive chamber for playing perpendicular hydraulic cylinder (1), anti-chamber circuit；Multistage plays the quick Hui Ping of perpendicular hydraulic cylinder (1)；

When multistage rises perpendicular hydraulic cylinder (1) overload heart moment during Hui Ping, multistage plays perpendicular hydraulic cylinder (1) and returns flat stall； Positive chamber balanced valve (3) realizes varying load balance, guarantees back that flat process is steady by the size of adjusting oil liquid flow；

When multistage plays perpendicular hydraulic cylinder (1) Hui Ping to 5 ° -7 ° of angle with horizontal plane, only retain the first proportional multi-way valve (6) fuel feeding, Multistage plays perpendicular hydraulic cylinder (1) and returns flat speed reduction, realizes that multistage plays the accurate Hui Ping of perpendicular hydraulic cylinder (1)；

When positive chamber balanced valve (3) internal oil pressure is excessive, the safety valve (13) in positive chamber balanced valve (3) is opened, draining is realized just Chamber balanced valve (3) pressure is no more than limiting value；

During Hui Ping, quickly recycling bypass (4) is opened by electromagnetic switch valve (5)；Realize quickly recycling bypass (4) and just Open by totally 2 road oil return lines for chamber balanced valve (3)；Increase back flat speed.

7. a kind of Multi-stage cylinder according to claim 6 quickly plays perpendicular recovery control system, it is characterised in that: described first Proportional multi-way valve (6) and the second proportional multi-way valve (7) realize fuel delivery automatic control.

8. a kind of Multi-stage cylinder according to claim 7 quickly plays perpendicular recovery control system, it is characterised in that: described multistage The perpendicular time of rising of perpendicular hydraulic cylinder (1) is less than or equal to 50s；It acts the vertical precision after the completion of erecting and is less than or equal to ± 1 °.

9. a kind of Multi-stage cylinder according to claim 8 quickly plays perpendicular recovery control system, it is characterised in that: first ratio Example multi-way valve (6) and the second proportional multi-way valve (7) for total oil mass be 50-280L/min.

10. a kind of Multi-stage cylinder according to claim 9 quickly plays perpendicular recovery control system, it is characterised in that: risen in multistage During perpendicular hydraulic cylinder (1) is erected:

S1, it is more than or equal to 0 ° when multistage plays perpendicular hydraulic cylinder (1) and horizontal sextant angle, and when less than 48 °, the first proportional multi-way valve (6) Fuel delivery be 160L/min；The fuel delivery of second proportional multi-way valve (7) is 120L/min；

S2, it is more than or equal to 48 ° when multistage plays perpendicular hydraulic cylinder (1) and horizontal sextant angle, and when less than 51 °, the first proportional multi-way valve (6) Fuel delivery be 100-160L/min；The fuel delivery of second proportional multi-way valve (7) is 80-120L/min；

S3, it is more than or equal to 51 ° when multistage plays perpendicular hydraulic cylinder (1) and horizontal sextant angle, and when less than 67 °, the first proportional multi-way valve (6) Fuel delivery be 100L/min；The fuel delivery of second proportional multi-way valve (7) is 80L/min；

S4, it is more than or equal to 67 ° when multistage plays perpendicular hydraulic cylinder (1) and horizontal sextant angle, and when less than 83 °, the first proportional multi-way valve (6) Fuel delivery be 50-100L/min；The fuel delivery of second proportional multi-way valve (7) is 0-80L/min；

S5, when being more than or equal to 83 ° with horizontal sextant angle when multistage plays perpendicular hydraulic cylinder (1), and being less than or equal to 90 °, the first proportional multi-path The fuel delivery of valve (6) is 50L/min；Second proportional multi-way valve (7) not fuel feeding.