CN214031587U - Portal rises to rise and hydraulic circuit that potential energy was retrieved - Google Patents
Portal rises to rise and hydraulic circuit that potential energy was retrieved Download PDFInfo
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- CN214031587U CN214031587U CN202023166006.6U CN202023166006U CN214031587U CN 214031587 U CN214031587 U CN 214031587U CN 202023166006 U CN202023166006 U CN 202023166006U CN 214031587 U CN214031587 U CN 214031587U
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Abstract
The utility model discloses a portal plays to rise and hydraulic circuit that potential energy was retrieved, include: the working interface is used for being communicated with a working cavity of the working oil cylinder; a positive and negative rotation oil pump; the main motor is in mechanical transmission connection with the positive and negative rotation oil pump so as to drive the positive and negative rotation oil pump to work in an electric mode to supply oil, and return oil can drive the positive and negative rotation oil pump to rotate in a power generation mode to generate power; an auxiliary oil pump; the auxiliary motor drives the auxiliary oil pump to work to supply oil; and one side of the hydraulic control proportional valve is communicated with the working interface, and the other side of the hydraulic control proportional valve is communicated with the positive and negative rotation oil pump through a control switch valve group and is selectively communicated with the auxiliary oil pump or the oil tank through a control reversing valve group. The hydraulic oil way for lifting the portal and recovering potential energy effectively solves the problem that the energy recovery is inconvenient when the working oil cylinder returns oil at present.
Description
Technical Field
The utility model relates to a hydraulic control oil circuit field, more specifically say, relate to a portal plays to rise and potential energy recovery's hydraulic pressure oil circuit.
Background
The gantry of the conventional electric empty box stacking machine can reach a high position, the potential energy of the gantry is high in the high position, and the recovery of the part of energy is considerable. The hydraulic motor driven by the pressure oil when the gantry descends rotates, and the hydraulic motor drives the generator to rotate, so that potential energy recovery is realized.
Potential energy recovery is carried out when the gantry of the empty box stacking machine is at a higher position, so that the production practice is met. But when the gantry of the generator is at a lower position, potential energy recovery is carried out, and the recovered potential energy cannot meet the consumption of the rotation of the generator, so that greater energy loss is caused. The gantry cannot be lowered quickly due to the limitation of the flow of the hydraulic motor. When the hydraulic motor connected with the generator cannot normally rotate, oil backflow is blocked, and the gantry cannot normally descend.
To sum up, how to effectively solve the problem that energy recovery is inconvenient when the working oil cylinder returns oil is a problem that needs to be solved urgently by technical personnel in the field at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a portal plays to rise and potential energy retrieves's hydraulic circuit, and this portal plays to rise and potential energy retrieves's hydraulic circuit can effectively solve the inconvenient problem of energy recovery when present work hydro-cylinder returns oil.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a portal rises to rise and hydraulic circuit that potential energy was retrieved, includes:
the working interface is used for being communicated with a working cavity of the working oil cylinder;
a positive and negative rotation oil pump;
the main motor is in mechanical transmission connection with the positive and negative rotation oil pump, so that the positive and negative rotation oil pump is driven to work in an electric mode to supply oil, and the positive and negative rotation oil pump returns oil to rotate in a power generation mode to generate power;
an auxiliary oil pump;
the auxiliary motor drives the auxiliary oil pump to work to supply oil;
and one side of the hydraulic control proportional valve is communicated with the working interface, and the other side of the hydraulic control proportional valve is communicated with the positive and negative rotation oil pump through a control switch valve bank and can be selectively communicated with the auxiliary oil pump or the oil tank through a control reversing valve bank.
In the hydraulic oil circuit for lifting the portal and recovering potential energy, when in use, the working interface is communicated with the working cavity of the working oil cylinder. When the working cavity needs to be supplied with high-pressure oil quickly, the main motor starts to work and the control switch valve group is opened at the moment, a forward and reverse oil pump supplies a large amount of high-pressure oil into the working cavity through the hydraulic control proportional valve, and when the oil quantity is still insufficient, the auxiliary motor can be started, so that the auxiliary oil pump supplies oil to the hydraulic control proportional valve in an auxiliary mode through the control reversing valve group. When the small oil quantity is needed, the control switch valve group can be closed at the moment, then the small oil quantity oil supply is realized only by the auxiliary oil pump, the fine adjustment is realized, and when the working cavity needs the small oil quantity to output oil, the control reversing valve group is used for selecting the oil tank to be communicated with the hydraulic control proportional valve at the moment, so that the oil quantity flows back to the oil tank at a low speed. When the working cavity needs to discharge oil quickly, the control switch valve group can be opened at the moment, high-pressure oil flows to the positive and negative rotation oil pump through the control switch valve group, the positive and negative rotation oil pump is driven to rotate reversely, so that the main motor generates electricity, and oil return is completed. In this portal rises to rise and the hydraulic pressure oil circuit of potential energy recovery, through setting up two sets of motors and the pump body for convenient accurate regulation work interface business turn over oil speed, in order to realize accurate regulation, and when quick oil return, can open control switch valves, in order to carry out energy recovery through positive and negative oil pump and main motor, and then can not influence whole progress and adjust because of positive and negative oil pump. In conclusion, the hydraulic oil way for lifting the portal frame and recovering potential energy effectively solves the problem that the energy recovery is inconvenient when the working oil cylinder returns oil at present.
Preferably, still including connect in the liquid accuse proportional valve with the automatically controlled proportional valve between the work interface, the automatically controlled proportional valve liquid is used for both sides one-way switch-on when the oil supply, switches on through the choke valve when returning oil.
Preferably, the control switch valve group comprises a hydraulic control reversing valve connected between the hydraulic control proportional valve and the positive and negative rotation oil pump and an electromagnetic reversing valve used for controlling the reversing of the hydraulic control reversing valve, so that when the electromagnetic reversing valve is opened, the hydraulic control reversing valve can be opened in a hydraulic control mode, and when the electromagnetic reversing valve is closed, the hydraulic control reversing valve is failed in a hydraulic control mode to be kept closed.
Preferably, an oil path between the positive and negative rotation oil pump and the hydraulic control reversing valve is guided to an oil tank through a main path overflow valve.
Preferably, the main pipeline overflow valve further comprises a main pipeline check valve arranged in parallel with the main pipeline overflow valve.
Preferably, the control reversing valve group is a multi-way valve.
Preferably, the pilot control directional valve set comprises a plurality of directional valves connected between the auxiliary oil pump and the pilot control proportional valve, and a first proportional solenoid valve and a second proportional solenoid valve both used for driving the directional control of the plurality of directional valves, the first proportional solenoid valve enables pressure oil in a pilot oil path of the pilot control directional valve set to push the plurality of directional valves to switch to an oil return position to conduct an oil tank when the first proportional solenoid valve is powered on, and the second proportional solenoid valve enables the pressure oil in the pilot oil path of the pilot control directional valve set to push the plurality of directional valves to switch to an oil supply position to conduct the auxiliary oil pump when the second proportional solenoid valve is powered on.
Preferably, the working interface is communicated with the oil tank through a stop valve.
Preferably, the working interface is communicated with the oil tank through a shunt overflow valve.
Preferably, the hydraulic control system comprises two working interfaces which are respectively communicated with the two working oil cylinders, the hydraulic control proportional valves are respectively communicated with the corresponding working interfaces through different electric control proportional valves, the two working interfaces are communicated through an intercommunicating oil path, and the intercommunicating oil path is connected with the stop valve.
Drawings
In order to more clearly illustrate the 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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an oil circuit diagram of a hydraulic oil circuit for gantry lifting and potential energy recovery provided by an embodiment of the present invention;
fig. 2 is a valve block diagram of the valve block at a in fig. 1;
FIG. 3 is a diagram of the valve stack at B in FIG. 1;
fig. 4 is a valve block diagram of the valve block at C in fig. 1.
The drawings are numbered as follows:
the hydraulic control system comprises a working interface 1, a working oil cylinder 2, a positive and negative rotation oil pump 3, a main motor 4, an auxiliary oil pump 5, an auxiliary motor 6, a hydraulic control proportional valve 7, a hydraulic control reversing valve 8, an electromagnetic reversing valve 9, an electronic control proportional valve 10, an oil tank 11, a main path one-way valve 12, a multi-path reversing valve 13, a first proportional electromagnetic valve 14, a second proportional electromagnetic valve 15, a stop valve 16, a main path overflow valve 17 and a shunt overflow valve 18.
Detailed Description
The embodiment of the utility model discloses portal plays to rise and hydraulic circuit that potential energy was retrieved to energy recuperation is inconvenient when effectively solving present work hydro-cylinder oil return problem.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, fig. 1 is an oil path diagram of a hydraulic oil path for gantry lifting and potential energy recovery according to an embodiment of the present invention; fig. 2 is a valve block diagram of the valve block at a in fig. 1; FIG. 3 is a diagram of the valve stack at B in FIG. 1; fig. 4 is a valve block diagram of the valve block at C in fig. 1.
In a specific embodiment, the embodiment provides a hydraulic oil path for gantry lifting and potential energy recovery, which is mainly used for an electric empty box stacking machine, and specifically, the hydraulic oil path for gantry lifting and potential energy recovery comprises a working interface 1, a positive and negative rotation oil pump 3, a main motor 4, an auxiliary oil pump 5, an auxiliary motor 6 and a hydraulic control proportional valve 7.
The working interface 1 is used for being communicated with a working cavity of the working oil cylinder 2 and is generally used for being communicated with a rodless cavity of the working oil cylinder 2 so as to push a piston rod of the working oil cylinder 2 to extend out when the working interface 1 is supplied with oil, so that the gantry rises, and when the gantry descends, oil needs to return through the working interface 1 so that the piston rod can retract. The working oil cylinder 2 can be used as a lifting oil cylinder.
The main motor 4 is in mechanical transmission connection with the positive and negative rotation oil pump 3 to drive the positive and negative rotation oil pump to work in an electric mode to supply oil, the return oil can drive the positive and negative rotation oil pump to rotate in a power generation mode to generate power, and if the main motor 4 is in the electric mode, the positive and negative rotation oil pump 3 can be driven to rotate in the positive direction to suck from the oil tank 11, and high-pressure oil can be supplied to the oil supply port. And when the main motor 4 is in the electric mode, the oil return rotation of the positive and negative rotation oil pump 3 is performed to generate electricity in the electricity generation mode, that is, when the main motor 4 is in the electricity generation mode, and the oil return drives the positive and negative rotation oil pump 3 to rotate in the reverse direction, the positive and negative rotation oil pump 3 rotating in the reverse direction drives the electricity generation input shaft in the main motor 4 to rotate, so that the main motor 4 generates electricity.
The auxiliary motor 6 drives the auxiliary oil pump 5 to operate to supply oil, the auxiliary motor 6 is not required to have a power generation mode, and is a low-power motor compared with the main motor 4, and the auxiliary oil pump 5 is a low-power oil pump compared with a positive and negative rotation oil pump. The oil quantity adjusting device mainly plays a role in precisely adjusting the oil quantity of the working oil cylinder 2.
Wherein the pilot operated proportional valve 7 functions as a speed limiting valve, and the pilot operated proportional valve 7 also plays a throttling role under the control of pilot pressure oil. Specifically, one side of the hydraulic control proportional valve 7 is communicated with the working interface 1, and the other side of the hydraulic control proportional valve 7 is communicated with the positive and negative rotation oil pump 3 through a control switch valve group and selectively communicated with the auxiliary oil pump 5 or the oil tank 11 through a control reversing valve group. And the flow rate of the control reversing valve is smaller than that of the control switch valve. When the control switch valve group is operated to be opened, the positive and negative rotation oil pump 3 can supply high-pressure oil to the hydraulic control proportional valve 7 during oil supply, and can guide the return oil at the hydraulic control proportional valve 7 to the positive and negative rotation oil pump 3 during oil return so as to drive the positive and negative rotation oil pump 3 to rotate reversely to drive the main motor 4 to generate electricity; when the control switch valve group is operated and closed, the hydraulic control proportional valve 7 and the positive and negative rotation oil pump 3 are in a state of oil body non-communication. The control reversing valve group can select the auxiliary oil pump 5 to be communicated with the hydraulic control proportional valve 7 through control during oil supply so that the auxiliary oil pump 5 can supply oil to the hydraulic control proportional valve 7, and can select the oil tank 11 to be communicated with the hydraulic control proportional valve 7 through control during oil return so as to guide the oil return at the hydraulic control proportional valve 7 to the oil tank 11. The control switch valve group is controlled to be opened and closed, and the control reversing valve group is controlled to be reversed, so that the control switch valve group can be selectively applied to control modes such as electric control, manual control and the like, and generally electric control is adopted, namely electromagnetic control valve cores are arranged.
Wherein the through-flow of control switching-over valves generally is less than control switch valves through-flow to make and carry out large-traffic through main control switch valves and switch on, realize rising fast and fall back, and can realize that the low discharge switches on through control switching-over valves, so that can accurate regulation rise to rise and fall back the degree, correspond, 5 power of auxiliary oil pump are less than the 3 power of positive and negative transfer oil pump, 6 power of auxiliary motor are less than 4 power of main motor, and the difference between, should set up according to actual fine-tuning degree.
In the hydraulic oil circuit for lifting the portal and recovering potential energy, when in use, the working interface 1 is communicated with the working cavity of the working oil cylinder 2. When the working chamber needs to be supplied with high-pressure oil quickly, the main motor 4 starts to work and the control switch valve bank is opened at the moment, the forward and reverse oil pump 3 supplies a large amount of high-pressure oil into the working chamber through the hydraulic control proportional valve 7, and when the oil amount is still insufficient, the auxiliary motor 6 can be started, so that the auxiliary oil pump 5 supplies oil to the hydraulic control proportional valve 7 in an auxiliary mode through the control reversing valve bank. When the small oil quantity is needed, the control switch valve group can be closed at the moment, then the small oil quantity oil supply is realized only by the auxiliary oil pump 5, the fine adjustment is realized, and when the working cavity needs the small oil quantity oil outlet, the control reversing valve group selects the oil tank 11 to be communicated with the hydraulic control proportional valve 7 at the moment, so that the oil quantity flows back to the oil tank 11 at a low speed. When the working cavity needs to discharge oil quickly, the control switch valve group can be opened at the moment, high-pressure oil flows to the positive and negative rotation oil pump 3 through the control switch valve group, the positive and negative rotation oil pump 3 is driven to rotate reversely, so that the main motor 4 generates electricity, and oil return is completed. In this portal rises to rise and the hydraulic pressure oil circuit of potential energy recovery, through setting up two sets of motors and the pump body for make things convenient for accurate regulation work interface 1 business turn over oily speed, in order to realize accurate regulation, and when quick oil return, can open control switch valves, in order to carry out energy recovery through just reversing oil pump 3 and main motor 4, and then can not influence whole progress and adjust because of just reversing oil pump 3. In conclusion, the hydraulic oil way for lifting the portal frame and recovering potential energy effectively solves the problem that the energy recovery is inconvenient when the working oil cylinder 2 returns oil at present.
Further, an electronic control proportional valve 10 is preferably further included here, wherein the electronic control proportional valve 10 is connected between the hydraulic control proportional valve 7 and the working interface 1, and the electronic control proportional valve 10 is used for conducting in one way at two sides during oil supply and conducting through a throttle valve during oil return. Namely, when oil supply is needed, the hydraulic control proportional valve is driven to conduct in one way, so that the hydraulic control proportional valve 7 can only supply oil to the working interface 1, oil bodies at the working interface 1 cannot return to the hydraulic control proportional valve 7, and the problem of quick pressure loss of a working cavity caused by sudden pressure loss at the hydraulic control proportional valve 7 is effectively solved. And when oil returns, the throttle valve is communicated between the working interface 1 and the hydraulic control proportional valve 7 to control the flow rate. Specifically, the electrically controlled proportional valve 10 may be a two-position two-way directional valve, in which one control position is communicated with the two side ports through a one-way valve element, and the other control position is communicated with the two side ports through a throttle valve.
Further, in order to facilitate switching control, it is preferable that the control switching valve group includes a pilot-operated directional control valve 8 connected between the pilot-operated proportional valve 7 and the positive and negative rotation oil pump 3 and an electromagnetic directional control valve 9 for controlling the directional control of the pilot-operated directional control valve 8, so that when the electromagnetic directional control valve 9 is opened, the pilot-operated directional control valve 8 can be opened in a pilot-operated manner, that is, at this time, an oil passage on one side of a spool of the pilot-operated directional control valve 8 is communicated with an oil tank 11, so that the spool can move in a directional manner, wherein the pilot-operated directional control valve 8 is a bidirectional pilot-operated valve, so that an oil pressure difference value on any side of the oil pressure relative to the other side of the spool reaches a set value, ports on both sides of the spool are communicated, and otherwise ports on both sides of the spool are closed, so that the hydraulic control is opened and closed. When the electromagnetic directional valve 9 is closed, the hydraulic control directional valve 8 fails in hydraulic control to keep closed, that is, the side oil path of the valve core of the hydraulic control directional valve 8 is no longer communicated with the oil tank 11 and is filled with hydraulic oil, so that the valve core cannot move in a direction-changing manner. It should be noted that the communication in the above and below may be direct communication through a pipeline, or may be communication through other valve elements or functional elements.
Further, in order to avoid an excessive pressure at the outlet port of the positive and negative rotation oil pump 3, it is preferable that an oil path between the positive and negative rotation oil pump 3 and the pilot operated directional control valve 8 is guided to the oil tank 11 through a main path relief valve 17, and correspondingly, a main path check valve 12 connected in parallel with the main path relief valve 17 may be further provided. So as to ensure the safety of the oil circuit and avoid the damage of the positive and negative rotation oil pump 3 and the hydraulic control reversing valve 8.
Furthermore, the control reversing valve group is preferably a multi-way valve, so that other reversing valve ports of the multi-way valve can meet other working requirements. The flow of the multi-way valve is small, and oil can be conveniently supplemented to the lifting main loop. And when the high door frame needs to be controlled by a small action, the control can be realized by the control of a multi-way valve with a small flow.
Further, for convenience of control, it is preferable that the pilot operated directional control valve group includes a multi-way directional control valve 13 connected between the auxiliary oil pump 5 and the pilot operated proportional valve 7, and a first proportional solenoid valve 14 and a second proportional solenoid valve 15 both for driving the multi-way directional control valve 13 to change direction, wherein the first proportional solenoid valve 14 is capable of enabling the pressure oil in the pilot oil path of the pilot operated directional control valve group to push the multi-way directional control valve 13 to switch to the oil return position to conduct the oil tank 11 when being powered, and the second proportional solenoid valve 15 is capable of enabling the pressure oil in the pilot oil path of the pilot operated directional control valve group to push the multi-way directional control valve 13 to switch to the oil supply position to conduct the auxiliary oil pump 5 when being powered.
Further, in consideration of the fact that even if the flow rate of the control valve is large, it is difficult to achieve the effect of quick unloading, it is preferable that the working connection 1 is communicated with the tank 11 through the shutoff valve 16. When the working oil cylinder 2 needs to be lowered in an emergency, the required lowering speed of the working oil cylinder 2 can be obtained by manually controlling the opening degree of the valve core of the stop valve 16, and the emergency lowering is realized.
Further, in order to avoid that the oil pressure of the working connection 1 is too high and damages parts such as cylinders and valves on the oil path, it is preferable that the working connection 1 is communicated with the oil tank 11 through the shunt overflow valve 18, that is, the oil path between the working connection 1 and the electric control proportional valve 10 is communicated with the oil tank 11 through the shunt overflow valve 18, and functions as a safety valve to perform a certain pressure relief when the oil pressure is too high.
In actual work, two working cylinders 2 are generally arranged, that is, two lifting cylinders are generally arranged, based on which, two working interfaces 1 are preferably included to be respectively communicated with the two working cylinders 2, wherein, the hydraulic control proportional valve 7 is respectively communicated with the corresponding working interfaces 1 through different electric control proportional valves 10, and preferably, the two working interfaces 1 are communicated through an intercommunication oil path, so as to ensure that the two working cylinders 2 work synchronously, and the intercommunication oil path is preferably connected with the stop valve 16, so as to facilitate rapid and simultaneous unloading.
In another embodiment, the hydraulic oil circuit for lifting and potential energy recovery of the gantry of the electric empty box stacking machine comprises: the hydraulic control system comprises a one-way valve, a main circuit overflow valve, a hydraulic control reversing valve 8, an electromagnetic reversing valve 9, a hydraulic control proportional valve 7, a stop valve 16, an electric control proportional valve 10, a shunt overflow valve 18, a working oil cylinder 2, a multi-way valve, an auxiliary oil pump 5, an auxiliary motor 6, a positive and negative rotation oil pump 3, a main motor 4 and an oil tank 11. Wherein the working cylinder 2 is rigidly connected with the door frame, wherein the multi-way valve is provided with a first proportional solenoid valve 14, a second proportional solenoid valve 15 and a multi-way reversing valve 13, and the main motor 4 can be switched between a motor mode and a generator mode. It should be noted that two synchronously driven working cylinders 2 are generally provided, and then correspondingly, the electrically controlled proportional valve 10 includes a first electrically controlled proportional valve and a second electrically controlled proportional valve, and the shunt overflow valve 18 includes a first shunt overflow valve and a second shunt overflow valve, where the first electrically controlled proportional valve and the first shunt overflow valve correspond to one of the working cylinders 2, and the second electrically controlled proportional valve and the second shunt overflow valve correspond to the other one of the working cylinders 2.
Specifically, the working mode of the hydraulic oil circuit for lifting the portal and recovering potential energy is as follows.
When the working oil cylinder 2 needs to be lifted, the main motor 4 rotates in a motor mode to drive the positive and negative rotation oil pump 3 to rotate, and the positive and negative rotation oil pump 3 sucks oil from the oil tank 11 to provide pressure oil for the system. When the main overflow valve is arranged, the main overflow valve has the function of a safety valve at the moment. The pressure oil reaches the hydraulic control reversing valve 8, wherein the hydraulic control reversing valve 8 is positioned at an upper position to play a role in stopping when not working, and the coil of the electromagnetic reversing valve 9 is positioned at a lower position to play a role in stopping when not being electrified. At this time, the coil of the electromagnetic directional valve 9 is electrified, the electromagnetic directional valve 9 is in the upper position to work, and the oil path is communicated. Under the action of the pressure oil, the hydraulic control reversing valve 8 changes to the lower position to work, and the oil way is communicated. The pressurized oil then passes through the pilot operated proportional valve 7 to the electronically controlled proportional valve 10 (first electronically controlled proportional valve and second electronically controlled proportional valve), wherein the pilot operated proportional valve 7 functions as a speed limiting valve. The coil of the electric control proportional valve 10 is not electrified, so that the electric control proportional valve 10 works at the right position, the oil path is in one-way conduction, pressure oil enters the rodless cavity of the working oil cylinder 29, and the gantry lifts. When two working oil cylinders 2 exist, rodless cavities of the two working oil cylinders 2 are communicated through pipelines, and the two working oil cylinders 2 are ensured to have the same lifting speed. The above-described branching relief valve 18 (first branching relief valve and second branching relief valve) functions as a safety valve to prevent the rod-less chamber internal pressure of the working cylinder 2 from becoming excessively high. For the lifting of the high portal frame, the requirement of lifting flow can not be met only by the positive and negative rotation oil pump 3, so that an auxiliary oil pump 5 is required to be added to supplement pressure oil. The auxiliary motor 6 rotates to drive the auxiliary oil pump 5 to rotate, the auxiliary oil pump 5 sucks oil from the oil tank 11 to provide pressure oil for the system, the pressure oil firstly enters the multi-way valve, when a coil of the second proportional electromagnetic valve 15 on the multi-way valve is electrified, the pressure oil entering the pilot oil circuit can enable the multi-way reversing valve 13 on the multi-way valve to be changed to an upper position, and the pressure oil in the main oil circuit flows out from an A port of the multi-way valve to reach the hydraulic control proportional valve 7 and combine with the other pressure oil from the hydraulic control reversing valve 8. Meanwhile, other work requirements can be met by other reversing valve ports of the multi-way valve. The flow of the multi-way valve is small, and the effect of supplementing oil for the lifting main loop is achieved. And when the high door frame needs to be controlled by a small action, the control can be realized by the control of a multi-way valve with a small flow.
When the working oil cylinder 2 needs to descend, the coil of the electric control proportional valve 10 (the first electric control proportional valve and the second electric control proportional valve) is controlled to be electrified, so that the electric control proportional valve is changed to a left position to work, the oil way is conducted, and the throttling function is achieved. Meanwhile, the pilot-controlled proportional valve 7 will also play a throttling role under the control of pilot pressure oil. Pressure oil in a rodless cavity of the working oil cylinder 2 enters an oil path and sequentially passes through the electric control proportional valve 10 and the hydraulic control proportional valve 7, one path of pressure oil reaches the hydraulic control reversing valve 8, and the other path of pressure oil reaches the multi-way valve. The coil of the first proportional solenoid valve 14 on the multi-way valve is energized and the pressurized oil in the pilot oil line of the multi-way valve will shift the multi-way directional control valve 13 on the multi-way valve to the lower position and the pressurized oil will return to the oil tank 11 through the multi-way valve. However, the flow rate of the multi-way valve is small, and only a small part of pressure oil can return to the oil tank 11 through the multi-way valve, so that the requirement of oil return of the system cannot be completely met. But when the high door frame needs to be controlled by a smaller action, the control of a multi-way valve with a smaller flow can be realized.
Therefore, the coil of the electromagnetic directional valve 9 is controlled to be electrified, so that the electromagnetic directional valve is changed to the upper position to work, and the oil path is communicated. Under the action of the pressure oil, the hydraulic control reversing valve 8 changes to the lower position to work, and the oil way is communicated. The pressure oil reaches the oil pump after passing through the hydraulic control reversing valve 8 and drives the oil pump to rotate reversely, so that the main motor 4 in the generator mode is driven to rotate, electric energy is generated, the purpose of potential energy recovery is achieved, and the gantry is lowered.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a portal rises to rise and hydraulic pressure oil circuit that potential energy was retrieved which characterized in that includes:
the working interface is used for being communicated with a working cavity of the working oil cylinder;
a positive and negative rotation oil pump;
the main motor is in mechanical transmission connection with the positive and negative rotation oil pump so as to drive the positive and negative rotation oil pump to work in an electric mode to supply oil, and return oil can drive the positive and negative rotation oil pump to rotate in a power generation mode to generate power;
an auxiliary oil pump;
the auxiliary motor drives the auxiliary oil pump to work to supply oil;
and one side of the hydraulic control proportional valve is communicated with the working interface, and the other side of the hydraulic control proportional valve is communicated with the positive and negative rotation oil pump through a control switch valve group and is selectively communicated with the auxiliary oil pump or the oil tank through a control reversing valve group.
2. The hydraulic oil way for lifting the gantry and recovering potential energy as claimed in claim 1, further comprising an electric control proportional valve connected between the hydraulic control proportional valve and the working interface, wherein the electric control proportional valve is used for conducting in a one-way mode at two sides during oil supply and conducting through a throttle valve during oil return.
3. The hydraulic oil circuit for gantry lifting and potential energy recovery as claimed in claim 2, wherein the control switch valve bank comprises a hydraulic control reversing valve connected between the hydraulic control proportional valve and the positive and negative rotation oil pump and an electromagnetic reversing valve for controlling the reversing of the hydraulic control reversing valve, so that when the electromagnetic reversing valve is opened, the hydraulic control reversing valve can be opened in a hydraulic control mode, and when the electromagnetic reversing valve is closed, the hydraulic control reversing valve is failed in a hydraulic control mode to be kept closed.
4. The hydraulic oil path for lifting the gantry and recovering potential energy of claim 3, wherein the oil path between the positive and negative rotation oil pump and the hydraulic control reversing valve is guided to an oil tank through a main path overflow valve.
5. The hydraulic oil circuit for gantry lifting and potential energy recovery as claimed in claim 4, further comprising a main circuit check valve arranged in parallel with the main circuit overflow valve.
6. The hydraulic oil circuit for lifting the gantry and recovering potential energy as claimed in claim 3, wherein the control reversing valve group is a multi-way valve.
7. The hydraulic oil way for gantry lifting and potential energy recovery according to claim 3, wherein the pilot-operated directional valve set comprises a multi-way directional valve connected between the auxiliary oil pump and the hydraulic-controlled proportional valve, and a first proportional solenoid valve and a second proportional solenoid valve both used for driving the multi-way directional valve to change directions, the first proportional solenoid valve enables pressure oil in a pilot oil way of the pilot valve set to push the multi-way directional valve to switch to an oil return position to conduct an oil tank when being powered on, and the second proportional solenoid valve enables pressure oil in the pilot oil way of the pilot valve set to push the multi-way directional valve to switch to an oil supply position to conduct the auxiliary oil pump when being powered on.
8. The hydraulic oil circuit for lifting the portal frame and recovering potential energy as claimed in any one of claims 2 to 7, wherein the working interface is communicated with an oil tank through a stop valve.
9. The hydraulic oil circuit for lifting the portal frame and recovering potential energy as claimed in claim 8, wherein the working interface is communicated with an oil tank through a shunt overflow valve.
10. The hydraulic oil path for lifting the gantry and recovering potential energy of claim 9, wherein the hydraulic oil path comprises two working ports to be respectively communicated with the two working cylinders, the hydraulic control proportional valves are respectively communicated with the corresponding working ports through different electric control proportional valves, the two working ports are communicated through an intercommunication oil path, and the intercommunication oil path is connected with the stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023166006.6U CN214031587U (en) | 2020-12-24 | 2020-12-24 | Portal rises to rise and hydraulic circuit that potential energy was retrieved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023166006.6U CN214031587U (en) | 2020-12-24 | 2020-12-24 | Portal rises to rise and hydraulic circuit that potential energy was retrieved |
Publications (1)
| Publication Number | Publication Date |
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| CN214031587U true CN214031587U (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023166006.6U Active CN214031587U (en) | 2020-12-24 | 2020-12-24 | Portal rises to rise and hydraulic circuit that potential energy was retrieved |
Country Status (1)
| Country | Link |
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| CN (1) | CN214031587U (en) |
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2020
- 2020-12-24 CN CN202023166006.6U patent/CN214031587U/en active Active
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