CN112648249A - High-speed switching fluid infusion control system - Google Patents
High-speed switching fluid infusion control system Download PDFInfo
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- CN112648249A CN112648249A CN202011506817.8A CN202011506817A CN112648249A CN 112648249 A CN112648249 A CN 112648249A CN 202011506817 A CN202011506817 A CN 202011506817A CN 112648249 A CN112648249 A CN 112648249A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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Abstract
An exemplary embodiment of the present invention provides a high-speed switching fluid infusion control system, which at least includes: the high-frequency-response switching unit, the first two-way cartridge valve, the second two-way cartridge valve and the sequence pressure valve; when the sequence pressure valve is in a first control stage, a first oil way separated from an oil source enables the first two-way cartridge valve to be in an oil way conduction state, so that a pressing device connected with a quick cavity port to which the first two-way cartridge valve belongs is pressed quickly, and meanwhile, a second oil way separated from the oil source enables the word frequency response switching unit and the sequence pressure valve to be closed; when oil liquid of the quick cavity opening enters the high-frequency-response switching unit, the first control stage is switched to the second control stage, at the moment, the sequential pressure valve is conducted, the second two-way cartridge valve is conducted, the pressure of the corresponding pressurizing cavity rises, and the first two-way cartridge valve are both conducted to enable the pressing device to be pressed fast under the combined action.
Description
Technical Field
The exemplary embodiment of the invention relates to the technical field of hydraulic pressure, in particular to a high-speed switching fluid infusion control system.
Background
Along with the gradual popularization of equipment such as hydraulic pressure lamination equipment platform and high frequency towards material device, higher requirement is put forward to hydraulic system's intelligence switching fluid infusion control. Particularly, quick closing and loading are required in the heat sealing machine equipment, the intelligent switching fluid infusion control system of the high-speed pressing equipment is used as a main load to transfer energy, the combined control mode is always stable at the first position, the dynamic response of high-speed fluid infusion switching during high-frequency operation can be overcome, and the problem of quick oil fluid supplementation is solved. The control system has the advantages of large oil passing capacity, strong pollution resistance, high integration degree and the like.
The rapid fluid infusion in the conventional high-speed heat-seal hydraulic system can not be followed up, once the dynamic response is forcibly improved, the switching impact can not be avoided, the high-pressure pipeline in the hydraulic system is often broken and leaks oil, the stable use under similar working conditions can not be met, and the technical problem that the service life of equipment becomes urgent need to be overcome in the industry is solved. Therefore, the use of the high-speed pressing intelligent switching fluid infusion control system is to stably control the switching function of the high-speed fluid infusion system. The switching function in the intelligent switching fluid infusion control system of the high-speed laminating equipment is that the high-speed switching can be carried out in the heat sealing equipment, and the impact prevention function is realized through the working pressure difference, so that the impact on a high-pressure pipeline or equipment is prevented.
However, in the hydraulic system of the heat sealing equipment actually used at present, high-speed switching liquid supplementing control of a heat sealing process cannot be achieved, and high-speed switching pressure impact is generated, so that equipment failure is frequent, and quality hidden trouble in the use process cannot be avoided.
Disclosure of Invention
In view of the above, an exemplary embodiment of the present invention is to provide a high-speed switching fluid infusion control system to solve the problems of high pressure impact and hidden use danger caused by high-speed switching.
In view of the above object, an exemplary embodiment of the present invention provides a high-speed switching fluid infusion control system, which is characterized by at least comprising:
the high-frequency-response switching unit, the first two-way cartridge valve, the second two-way cartridge valve and the sequence pressure valve;
when the sequence pressure valve is in a first control stage, a first oil way separated from an oil source enables the first two-way cartridge valve to be in an oil way conduction state, so that a pressing device connected with a quick cavity port to which the first two-way cartridge valve belongs is pressed quickly, and meanwhile, a second oil way separated from the oil source enables the word frequency response switching unit and the sequence pressure valve to be closed;
when oil liquid of the quick cavity opening enters the high-frequency-response switching unit, the first control stage is switched to the second control stage, at the moment, the sequential pressure valve is conducted, the second two-way cartridge valve is conducted, the pressure of the corresponding pressurizing cavity rises, and the first two-way cartridge valve are both conducted to enable the pressing device to be pressed fast under the combined action.
In another possible implementation manner of the embodiment of the present invention, in combination with the above description, the high frequency switching unit is a liquid filling switching device including a port a, a port b, a port c, and a valve element, the second oil path is connected to the port a, the second two-way cartridge valve, and the sequence pressure valve, when pressure oil in the second oil path passes through the port a, the pressure oil is blocked by the valve element of the high frequency switching unit, so that the pressure of the sequence pressure valve is increased, before the pressure of the sequence pressure valve does not reach a first preset threshold, the sequence pressure valve is in a closed state, the first oil path bypasses the high frequency switching unit via the port b, and the pressure of the port b is greater than the pressure of the port a, and when the pressure of the second oil path is greater than the first preset threshold, the sequence pressure valve is turned on, the first oil path is divided to enter the pressurizing cavity port through the interface b and the interface c, and the interface c is connected with the conducting oil path of the second two-way cartridge valve to further accelerate the pressing of the pressing device.
With reference to the foregoing description, in another possible implementation manner of the embodiment of the present invention, the high frequency response switching unit further includes:
the interface d is connected with an external oil tank;
the sequence pressure valve is also connected with the oil drainage port;
when the external oil tank is connected with the auxiliary pressure oil through the interface d, oil drainage is carried out through the oil drainage port.
In another possible implementation manner of the embodiment of the present invention, the first two-way cartridge valve and the second two-way cartridge valve of the system each include a control valve C, and an oil path interface a and an oil path interface B, and whether the first two-way cartridge valve and the second two-way cartridge valve are connected or not is controlled by the control valve C, the oil path interface a and the oil path interface B are not connected when the control valve C is in a pressure state, and the oil path interface a and the oil path interface B are connected when the control valve C is in a non-pressure state.
In another possible implementation manner of the embodiment of the present invention, when the sequence pressure valve is in the on state, the second two-way cartridge valve enables the oil path interface a and the oil path interface B to be in the on state due to the control valve C being in the non-pressure state, and the pressure oil of the pressurization cavity port is communicated with the first oil path of the oil source to supply oil to the fast cavity port together.
In another possible implementation manner of the embodiment of the present invention, in combination with the above description, the control valve C of the first two-way cartridge valve is communicated with the quick chamber.
In another possible implementation manner of the embodiment of the present invention, in combination with the above description, a first damper is provided on the oil passage between the second oil passage and the port a.
In another possible embodiment of the present invention, in combination with the above description, a second damper is provided in the second oil passage and the oil passage of the second two-way cartridge valve.
In another possible implementation manner of the embodiment of the present invention, in combination with the above description, the pressure chamber port is further provided with an external pressure transmitter to indicate a high-speed state during pressurization.
In another possible implementation manner of the embodiment of the present invention, in combination with the above description, the pressurization port is used to increase a pressure difference between the oil source port and the rapid port.
As can be seen from the above description, the high-speed switching fluid infusion control system provided in the exemplary embodiment of the present invention controls the fluid infusion device to operate quickly by the pressure difference between the main system oil source port and the fast chamber, and opens the sequential pressure valve to make the pressure oil of the oil source enter the pressurizing chamber, and the external pressure transmitter sends an electrical signal when the pressurizing chamber reaches a set value, so as to realize the intelligent switching fluid infusion control under the high-speed working condition, and avoid the situation that the switching speed cannot meet the requirement. Through the differential pressure between the oil source port of the main system and the quick cavity, the quick action of the liquid supplementing device is controlled to carry out liquid supplementing switching control, so that action impact is not generated when the high-speed action of the laminating equipment is switched, the effect of stable control under high-speed work is achieved, and the pipeline and equipment are prevented from being damaged by the impact generated by liquid supplementing switching during the high-speed action. The system of the invention has wide application range, high stability and strong adaptability. The system has simple structure and obvious high-speed switching fluid infusion control effect.
Drawings
In order to more clearly illustrate the exemplary embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only exemplary embodiments of the present invention, and for those skilled in the art, other drawings may be obtained based on these drawings without inventive effort.
FIG. 1 is a schematic structural diagram of a high-speed switching fluid infusion control system according to an exemplary embodiment of the present invention;
FIG. 2 is a schematic diagram of an oil flow path according to an exemplary embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the flow of oil to the oil circuit according to an exemplary embodiment of the present invention;
fig. 4 is a schematic diagram illustrating the flow of oil paths according to an exemplary embodiment of the present invention.
In the figure, 1-first two-way cartridge valve; 2-a second two-way cartridge valve 2; 3-a high frequency response switching unit; 4-sequence pressure valve; 5-first damping; 6-second damping.
Detailed Description
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
It should be noted that technical terms or scientific terms used in the exemplary embodiments of the present invention should have a general meaning as understood by those having ordinary skill in the art to which the present disclosure pertains, unless otherwise defined. The use of "first," "second," and similar language in the exemplary embodiments of the invention is not intended to imply any order, quantity, or importance, but rather the intention is to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
The invention relates to a high-speed switching liquid supplementing control system which is mainly applied to a hydraulic control scene of a pressing device, and the basic idea is as follows: the oil circuit control through the high-frequency response control unit makes the total oil circuit of system be in two stages, and first stage direct action is in order to make compression fittings action in quick accent, and when further high-speed pressfitting, through the big or small relation of pressure and the predetermined threshold value between high-frequency response control unit and the sequence pressure valve, the pressure of regulation pressurization chamber acts on the oil circuit of quick accent jointly, has a transient process in order to realize switching, and overall system's stability and adaptability have been promoted by a wide margin.
Specifically, in combination with the system schematic shown in fig. 1, a high-speed switching fluid infusion control system according to an exemplary embodiment of the present invention at least includes: a first two-way cartridge valve 1, a second two-way cartridge valve 2, a high frequency response switching unit 3, and a sequence pressure valve 4.
The high-frequency-response switching unit is a liquid-filling switching device comprising a connector a, a connector b, a connector c and a valve core, the second oil path is respectively connected with the connector a, the second two-way cartridge valve and the sequence pressure valve, pressure oil of the second oil path is blocked by the valve core of the high-frequency-response switching unit when passing through the connector a, so that the pressure of the sequence pressure valve is increased, the sequence pressure valve is in a closed state before the pressure of the sequence pressure valve does not reach a first preset threshold value, the first oil path is shunted to enter the high-frequency-response switching unit through the connector b, the pressure of the connector b is larger than the pressure of the connector a, and the sequence pressure valve is conducted when the pressure of the second oil path is larger than the first preset threshold value, and the first oil path is shunted to enter a pressurizing cavity port through the connector b and the connector c, and the interface c is connected with a conducting oil path of the second two-way cartridge valve so as to further accelerate the pressing of the pressing device.
When the sequence pressure valve is in the first control stage, a first oil path separated from an oil source enables the first two-way cartridge valve to be in an oil path conducting state, so that a pressing device connected with a quick cavity port to which the first two-way cartridge valve belongs is pressed quickly, and meanwhile, a second oil path separated from the oil source enables the word frequency response switching unit and the sequence pressure valve to be closed.
The first control stage is a period of time after the system is started, and in the exemplary embodiment of the present invention, the first control stage is a process in which the pressure oil at the oil source port enters the fast chamber port through the first oil path and reaches the interface a of the high frequency response switching unit 3, the sequence pressure valve 4 and the control valve C of the second two-way cartridge valve through the second oil path, and this process does not involve switching of the pressurizing chamber and the high frequency response switching unit 3.
When oil liquid of the quick cavity opening enters the high-frequency-response switching unit, the first control stage is switched to the second control stage, at the moment, the sequential pressure valve is conducted, the second two-way cartridge valve is conducted, the pressure of the corresponding pressurizing cavity rises, and the first two-way cartridge valve are both conducted to enable the pressing device to be pressed fast under the combined action.
In an implementation manner of the exemplary embodiment of the present invention, each of the first two-way cartridge valve and the second two-way cartridge valve of the system includes a control valve C, and an oil path interface a and an oil path interface B, whether the first two-way cartridge valve and the second two-way cartridge valve are conducted or not is controlled by the control valve C, the oil path interface a and the oil path interface B are not connected when the control valve C is in a pressure state, and the oil path interface a and the oil path interface B are connected when the control valve C is in a non-pressure state.
The quick cavity opening is connected with the interface B of the high-frequency switching unit so as to enable the other side, opposite to the interface a, of the valve core of the high-frequency switching unit to be pressurized, the pressures on two sides of the valve core are different, when the pressure provided by the interface B is greater than the pressure provided by the interface a, the valve core presses the pressure oil on one side of the interface a into the second oil path, the pressure of the second oil path and the pressure of the sequence pressure valve are gradually increased, when the pressure of the sequence pressure valve is greater than a preset threshold value, the sequence pressure valve is opened, the pressure of the second two-way cartridge valve C is reduced from high to low until no pressure exists, when the pressure of the control valve C of the second two-way cartridge valve C does not exist, the oil path interface A and the oil path interface B of the second two-way cartridge valve are communicated, and the pressure oil of the quick cavity opening enters the pressurization cavity through the interface B and the interface C, and further providing pressure oil for the quick cavity port through an oil way between the pressurization cavity and the oil way interface A and the oil way interface B of the second two-way cartridge valve.
In an implementation scenario of the exemplary embodiment of the present invention, the high-frequency-response switching unit further includes: the interface d is connected with an external oil tank; the sequence pressure valve is also connected with the oil drainage port; when the external oil tank is connected with the auxiliary pressure oil through the interface d, oil drainage is carried out through the oil drainage port.
According to the method, the interface d of the high-frequency response switching unit inputs pressure oil through the external oil tank, and the pressure oil pressure of the rapid cavity is increased to a corresponding pressure value through further rapidly increasing the pressure cavity to a preset pressure value, so that the preset pressing speed can be rapidly achieved.
In an implementation manner of the example embodiment of the present invention, when the sequence pressure valve is in the conducting state, the second two-way cartridge valve conducts the oil path interface a and the oil path interface B because the control valve C is in the non-pressure state, and the pressure oil of the pressurizing chamber port is communicated with the first oil path of the oil source to supply oil to the fast chamber port together.
In an embodiment of the exemplary embodiment of the present invention, a first damper is provided in an oil passage between the second oil passage and the port a, and/or a second damper is provided in an oil passage between the second oil passage and the second two-way cartridge valve.
The first damper has the function of a buffer oil path, and the second damper has the functions of the buffer oil path and pressure compensation at the same time.
In an implementation manner of the exemplary embodiment of the present invention, the pressure cavity opening is further provided with an external pressure transmitter to prompt a high-speed state during pressurization, and in a process of pressure increase, the external pressure transmitter can perform corresponding conversion through a voltage value or a current value corresponding to the pressure, and then realize a corresponding prompting function.
Referring to fig. 2, in the first stage, the oil flow direction in the oil passage may be indicated by an arrow, and the oil flow direction in the oil passage at this time mainly includes the flow directions of the first oil passage and the second oil passage.
Referring to fig. 3, when the first stage is switched to the second stage, the oil flow direction of the oil passage may be represented by an arrow, at this time, the oil flow direction of the second oil passage still exists, and until the pressure of the port B is greater than the pressure of the port a and the sequential pressure valve is turned on, the oil flow direction of the second oil passage basically disappears, and becomes as shown in fig. 4, the pressure oil pressurizes the cavity opening, and flows to the first two-way cartridge valve after passing through the oil passage port a and the oil passage port B of the second two-way cartridge valve, and enters the quick cavity opening.
The operating principle of the system of an exemplary embodiment of the present invention can be expressed as follows:
when high pressure is introduced into the oil source port of the main system, the pressure oil opens a control cavity C port of the first two-way cartridge valve to enable oil to flow from A to B and enter a quick cavity port through B, and simultaneously flows into a port B of the high-frequency switching unit in a shunting manner, the oil in the quick cavity can push connected pressing equipment to quickly act, the pressure oil at the oil source port of the main system flows from one end of the first damping to the other end of the first damping, in the process, the first damping plays a role of a buffer oil way, the second oil way is communicated with the port a of the high-frequency switching unit and flows through one end of the second damping and one end of the sequence pressure valve in a shunting manner, and the second damping plays a role of a buffer oil way, the pressure oil enters a port C (control valve C) of the second two-way cartridge valve through a second damper, a valve core of the second two-way cartridge valve 2 is closed under the pressure of the port C, and the sequence pressure valve is in a closed state before the pressure oil does not reach a set value of the sequence pressure valve.
On the other hand, when pressure oil enters the port a of the high-frequency-response switching unit to open the main valve element, when pressure oil enters the high-frequency-response switching unit to push the pressing device to act, oil liquid at the oil tank port can be quickly filled into the pressurizing cavity through the port d, so that the oil liquid in the pressurizing cavity is kept full (at the moment, the pressure in the pressurizing cavity is lower), the hydraulic pressure of the high-frequency-response switching unit is quickly increased along with the increase of the load, the driving pressure of the port b of the communicated high-frequency-response switching unit is increased, when the driving pressure of the port a of the high-frequency-response switching unit is always exceeded, the valve element of the high-frequency-response switching unit is quickly closed, at the moment, the total system oil source exceeds the set pressure of the sequential pressure valve, namely the first preset threshold, the pressure oil at the port C of the second two-way cartridge valve flows back to the, the pressing pressure is rapidly increased to achieve the set value of the external pressure signaling device, and the high-speed pressing action is realized. The liquid supplementing switching control process of the connected pressing equipment is stable and reliable in the high-speed working state, no action impact exists, and the technological requirements of the high-speed flushing equipment on liquid supplementing switching under the high-speed working condition are completely met.
In a more specific implementation of the exemplary embodiment of the present invention, the system of the present invention is implemented with the following control scheme: the system comprises 2 dampers, 2 two-way cartridge valves, 1 high-frequency-response switching unit and 1 sequential pressure valve, and the system comprises 3 main oil ports, 1 oil tank port and 1 oil drain port which are respectively a main system oil source port, a quick port, a pressurizing port, an oil tank port and an oil drain port. The oil source port of the total system is a pipeline led out from the outlet of the high-pressure pump or from the high-pressure accumulator and the like. The fast cavity is a pipeline connected to an equipment actuator (belonging to a laminating device or the laminating device). The pressurizing port is a conduit to the device actuator. The tank port is a pipe connected to the tank. The oil drain port is a pipeline connected to the oil tank. The hydraulic oil circuit is connected to the ports A of the two-way cartridge valves and one end of the No. 2 damper as a main system oil source port, and the ports A and B of the two-way cartridge valves realize the opening and closing functions through the action of the main valve core. The opening and closing of the main valve core are determined by whether pressure oil exists in a control cavity C of the two-way cartridge valve. The interfaces B of the two-way cartridge valves are respectively communicated with the ends B and c of the high-frequency-response switching units and are connected to an actuator of the pressing device through oil pipes. The control cavity C of one two-way cartridge valve is connected with one end of the first damper, and the control cavity C of the other two-way cartridge valve is connected with the quick cavity. The other end of the first damper is connected to one end of the sequence pressure valve, the end a of the high-frequency response switching unit and the other end of the second damper respectively. The other end of the sequence pressure valve is connected to the oil drain port.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the present disclosure, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the exemplary embodiments of the present invention as described above, which are not provided in detail for the sake of brevity.
In addition, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures for simplicity of illustration and discussion, and so as not to obscure the exemplary embodiments of the invention. Furthermore, devices may be shown in block diagram form in order to avoid obscuring exemplary embodiments of the present invention, and this also takes into account the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform within which the exemplary embodiments of the present invention are to be implemented (i.e., specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the disclosure, it should be apparent to one skilled in the art that the example embodiments of the disclosure can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative instead of restrictive.
While the present disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic ram (dram)) may use the discussed embodiments.
The exemplary embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the exemplary embodiments of the invention are intended to be included within the scope of the disclosure.
Claims (10)
1. A high-speed switching fluid infusion control system, characterized in that the system comprises at least:
the high-frequency-response switching unit, the first two-way cartridge valve, the second two-way cartridge valve and the sequence pressure valve;
when the sequence pressure valve is in a first control stage, a first oil way separated from an oil source enables the first two-way cartridge valve to be in an oil way conduction state, so that a pressing device connected with a quick cavity port to which the first two-way cartridge valve belongs is pressed quickly, and meanwhile, a second oil way separated from the oil source enables the word frequency response switching unit and the sequence pressure valve to be closed;
when oil liquid of the quick cavity opening enters the high-frequency-response switching unit, the first control stage is switched to the second control stage, at the moment, the sequential pressure valve is conducted, the second two-way cartridge valve is conducted, the pressure of the corresponding pressurizing cavity rises, and the first two-way cartridge valve are both conducted to enable the pressing device to be pressed fast under the combined action.
2. The high-speed switching fluid infusion control system according to claim 1, wherein the high-frequency switching unit is a fluid infusion switching device including a port a, a port b, a port c, and a spool, the second fluid passage is connected to the port a, the second two-way valve, and the priority pressure valve, and when the pressure fluid in the second fluid passage passes through the port a, the pressure fluid is blocked by the spool of the high-frequency switching unit, so that the pressure of the priority pressure valve increases, and before the pressure of the priority pressure valve does not reach a first preset threshold, the priority pressure valve is in a closed state, the first fluid passage is branched to enter the high-frequency switching unit through the port b, and the pressure of the port b is greater than the pressure of the port a, and when the pressure of the second fluid passage is greater than the first preset threshold, the priority pressure valve is turned on, the first oil path is divided to enter the pressurizing cavity port through the interface b and the interface c, and the interface c is connected with the conducting oil path of the second two-way cartridge valve to further accelerate the pressing of the pressing device.
3. The high-speed switching fluid replacement control system according to claim 2, wherein the high-frequency response switching unit further comprises:
the interface d is connected with an external oil tank;
the sequence pressure valve is also connected with the oil drainage port;
when the external oil tank is connected with the auxiliary pressure oil through the interface d, oil drainage is carried out through the oil drainage port.
4. The high-speed switching fluid infusion control system according to claim 1, wherein each of the first and second two-way cartridges of the system comprises a control valve C, and an oil passage port a and an oil passage port B, the conduction of which is controlled by the control valve C, the oil passage port a and the oil passage port B are in a non-connection state when the control valve C is in a pressure state, and the oil passage port a and the oil passage port B are in a connection state when the control valve C is in a non-pressure state.
5. The high-speed switching fluid infusion control system according to claim 4, wherein when the sequence pressure valve is in the conducting state, the second two-way cartridge valve conducts the oil path interface A and the oil path interface B due to the non-pressure state of the control valve C, and the pressure oil of the pressurizing cavity port is communicated with the first oil path of the oil source to supply oil to the fast cavity port together.
6. The high-speed switching fluid replacement control system of claim 4, wherein a control valve C of the first two-way cartridge valve is in communication with the quick chamber port.
7. The high-speed switching fluid infusion control system according to claim 1, wherein a first damper is provided on an oil passage between the second oil passage and the port a.
8. The high-speed switching fluid infusion control system according to claim 1, wherein a second damper is provided on the second oil passage and the oil passage of the second two-way cartridge valve.
9. The high-speed switching fluid infusion control system according to claim 1, wherein the pressure chamber port is further provided with an external pressure transmitter for indicating a high-speed state during pressurization.
10. The high-speed switching fluid replacement control system according to claim 1, wherein the pressurization port is configured to increase a pressure differential between the oil source port and the fast port.
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| CN210623244U (en) * | 2019-10-09 | 2020-05-26 | 山东泰丰智能控制股份有限公司 | Automatic shaking table hydraulic system that buffering switched |
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| CN112648249B (en) | 2022-09-23 |
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