CN114263822A - Unlocking impact prevention hydraulic system and method for radar lifting mechanism - Google Patents
Unlocking impact prevention hydraulic system and method for radar lifting mechanism Download PDFInfo
- Publication number
- CN114263822A CN114263822A CN202111591905.7A CN202111591905A CN114263822A CN 114263822 A CN114263822 A CN 114263822A CN 202111591905 A CN202111591905 A CN 202111591905A CN 114263822 A CN114263822 A CN 114263822A
- Authority
- CN
- China
- Prior art keywords
- self
- unlocking
- locking
- communicated
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses an unlocking impact prevention hydraulic system and method of a radar lifting mechanism, and the system comprises a hydraulic power source P1, a hydraulic power source P2, two parallel self-locking oil cylinders, an electric proportional reversing valve, an unlocking electromagnetic ball valve, a balance valve, a pressure sensor and an encoder, wherein rodless cavities A2 of the two self-locking oil cylinders are communicated and are communicated with a cavity opening A of the electric proportional reversing valve through the balance valve, rod cavities B2 of the two self-locking oil cylinders are communicated and are communicated with a cavity opening B of the electric proportional reversing valve, unlocking cavities L2 of the two self-locking oil cylinders are communicated and are communicated with the unlocking electromagnetic ball valve, a hydraulic power source P1 is communicated with an oil inlet of the electric proportional reversing valve, and a hydraulic power source P2 is communicated with an oil inlet of the unlocking electromagnetic ball valve; the pressure sensor is arranged on a connecting pipeline between the rodless cavity A2 and the balance valve, and the encoder and the antenna array face pitching main shaft are coaxially arranged; the invention has the advantages that: the unlocking impact phenomenon of the radar array surface at the moment of unlocking the self-locking oil cylinder at any position is solved.
Description
Technical Field
The invention relates to the technical field of radar lifting mechanisms and control, in particular to an unlocking impact prevention hydraulic system and method of a radar lifting mechanism.
Background
The large heavy-duty radar mostly adopts a lifting oil cylinder to support a radar antenna array surface to carry out lifting action and lock the antenna array surface at a specific working or maintenance position. On one hand, in order to ensure the detection precision of the radar and the safety of maintenance personnel, the antenna array surface can be locked at a specific position for a long time, and any sinking amount cannot be required; on the other hand, in order to meet the requirements of newly-increased variable-angle work and maintenance of the radar, the radar lifting mechanism is required to be reliably locked at any position for a long time. Therefore, the radar array face lifting oil cylinder with the requirements needs to adopt a full-stroke mechanical self-locking oil cylinder, an expansion self-locking oil cylinder, a spring wedge locker self-locking oil cylinder and other various forms.
The self-locking oil cylinder overcomes the gravity of an antenna array surface by the mechanical locking force of the oil cylinder to lock the array surface, and after long-time locking, the leakage of a balance valve can lead the hydraulic oil in a rodless cavity of the oil cylinder to release pressure, so that the self-locking force of the oil cylinder is suddenly removed at the moment of unlocking the oil cylinder, no pressure oil exists in the rodless cavity of the oil cylinder, the supporting force cannot be provided, and the array surface can suddenly lose weight and the unlocking impact phenomenon can occur according to the principle of force balance; in addition, the gravity loads generated by different array surface angles are different, so that the generated unlocking impact force is also different, the whole vehicle body can be driven to shake violently and generate a loud sound in serious conditions, and the serious risk of structural damage exists.
Chinese patent No. CN212712543U discloses a radar antenna lifting synchronous driving system based on oil compensation, the lifting device of the radar antenna comprises a left lifting cylinder, a right lifting cylinder, a turntable, and an antenna, the driving system comprises a control device and a hydraulic device; the hydraulic device comprises an oil tank, a proportional reversing valve and an oil supplementing integrated valve group; the control device controls the telescopic motion of the left lifting oil cylinder and the right lifting oil cylinder through the proportional reversing valve; the proportional reversing valve is also connected with two cavities of the left lifting oil cylinder and the right lifting oil cylinder through oil supplementing integrated valve groups through pipelines respectively, the control device controls the oil supplementing integrated valve groups according to displacement information of the left lifting oil cylinder and the right lifting oil cylinder to adopt a flow dividing/collecting + proportional oil supplementing synchronous control mode, oil is supplemented into the corresponding cavity of the left lifting oil cylinder or the right lifting oil cylinder, and the motion synchronization of the left lifting oil cylinder and the right lifting oil cylinder is realized. The utility model discloses a realization has improved the antenna and has lifted the synchro control precision from extensive to meticulous two-stage hydraulic pressure synchro control. But this utility model can't solve the auto-lock hydro-cylinder unblock in the twinkling of an eye, unload suddenly and lead to the unblock impact phenomenon of radar array face because of the hydro-cylinder is from the locking force.
Disclosure of Invention
The technical problem to be solved by the invention is that the prior art cannot solve the unlocking impact phenomenon of a radar array surface caused by sudden removal of the self-locking force of the oil cylinder at the moment of unlocking the self-locking oil cylinder; secondly, the problem of different unlocking impact forces generated by different array surface angles cannot be solved.
The invention solves the technical problems through the following technical means: an unlocking impact prevention hydraulic system of a radar lifting mechanism comprises a hydraulic power source P1, a hydraulic power source P2, two parallel self-locking oil cylinders (100), an electric proportional directional control valve (200), an unlocking electromagnetic ball valve (300), a balance valve (400), a pressure sensor (500) and an encoder (600), wherein an antenna array face (1) is lifted, descended, supported and locked through the two parallel self-locking oil cylinders (100), rodless cavities A2 of the two self-locking oil cylinders (100) are communicated and are communicated with a cavity opening A of the electric proportional directional control valve (200) through the balance valve (400), rod cavities B2 of the two self-locking oil cylinders (100) are communicated and are communicated with a cavity opening B of the electric proportional directional control valve (200), unlocking cavities L2 of the two self-locking oil cylinders (100) are communicated and are communicated with the unlocking electromagnetic ball valve (300), an oil return opening T of the electric proportional directional control valve (200) and an oil return opening T2 of the unlocking electromagnetic ball valve (300) are communicated with an oil tank, the hydraulic power source P1 is communicated with an oil inlet of the electric proportional reversing valve (200), and the hydraulic power source P2 is communicated with an oil inlet of the unlocking electromagnetic ball valve (300); the pressure sensor (500) is arranged on a connecting pipeline between the rodless cavity A2 and the balance valve (400), the encoder (600) and the pitching main shaft of the antenna array surface (1) are coaxially arranged, and the pressure sensor (500) and the encoder (600) are connected with the servo controller; the servo controller controls the electric proportional reversing valve (200) to act, oil is supplemented to a rodless cavity A2 of the self-locking oil cylinder (100), when the pressure of the rodless cavity A2 acquired by the pressure sensor (500) reaches a preset oil supplementing pressure value, the electric proportional reversing valve (200) loses power and returns to a zero position, and at the moment, the pressure in the rodless cavity A2 is maintained by the balance valve (400); the preset oil supplementing pressure value is related to the angle value of the array surface, and the servo controller calls the preset oil supplementing pressure value required by the current array surface angle position through the numerical value of the encoder (600).
The servo controller controls the action of the electric proportional reversing valve (200) to supplement oil to the rodless cavity A2 of the self-locking oil cylinder (100), when the pressure of the rodless cavity A2 acquired by the pressure sensor (500) reaches a preset oil supplementing pressure value, the electric proportional reversing valve (200) loses power and returns to a zero position, the pressure in the rodless cavity A2 is maintained by the balance valve (400), when the self-locking oil cylinder (100) is unlocked, the servo controller controls the unlocking electromagnetic ball valve (300) to be powered on, the self-locking oil cylinder (100) is in an unlocking state, the pressure in the rodless cavity A2 is just balanced with the gravity load of a front surface, the unlocking impact cannot occur, the unlocking impact phenomenon of a radar front surface caused by sudden removal of the self-locking force of the self-locking oil cylinder at the moment is effectively solved, the preset oil supplementing pressure value is associated with the angle value, the servo controller can automatically call the preset oil supplementing pressure value required by the angular position of the current front surface through the numerical value of the encoder (600), realize the stepless balance of the gravity load generated by different array surface angles.
Further, the hydraulic power source P1 provides pressure oil for a rodless cavity A2 or a rod cavity B2 of the self-locking oil cylinder (100).
Further, the hydraulic power source P2 provides high-pressure oil with constant pressure for the unlocking cavity L2 of the self-locking oil cylinder (100).
Further, the maximum pushing force or the maximum pulling force provided by the hydraulic power source P1 to the self-locking oil cylinder (100) is smaller than the locking force of the self-locking oil cylinder (100), namely, when the self-locking oil cylinder (100) is in a locking state, a piston rod of the self-locking oil cylinder (100) cannot move.
Further, the self-locking oil cylinder (100) is an expansion type self-locking oil cylinder or a spring wedge-shaped block locker type self-locking oil cylinder.
Furthermore, when the unlocking electromagnetic ball valve (300) is powered off, the unlocking electromagnetic ball valve works in the right position, an unlocking cavity L2 of the self-locking oil cylinder (100) is communicated with an oil tank, and the self-locking oil cylinder (100) is in a locking state; when the unlocking electromagnetic ball valve (300) is electrified, the unlocking electromagnetic ball valve works at a left position, an unlocking cavity L2 of the self-locking oil cylinder (100) is communicated with a hydraulic power source P2, and the self-locking oil cylinder (100) is in an unlocking state.
Furthermore, the electric proportional directional valve (200) is a three-position four-way valve, when the position is zero, the hydraulic power source P1 is communicated with the oil tank, and the hydraulic system is in an unloading state; when the electric proportional directional valve (200) is positioned at a first working position, a hydraulic power source P1 is communicated with a rodless cavity A2 of the self-locking oil cylinder (100) through a balance valve (400), a rod cavity B2 of the self-locking oil cylinder (100) is communicated with an oil tank, and when the oil cylinder is unlocked, the antenna array surface (1) is lifted; when the electric proportional directional valve (200) is in the second working position, the hydraulic power source P1 is communicated with the rod cavity B2 of the self-locking oil cylinder (100), the rodless cavity A2 of the self-locking oil cylinder (100) is communicated with the oil tank through the balance valve 400, and the antenna array face (1) descending action is executed when the oil cylinder is unlocked.
Furthermore, when the electric proportional directional valve (200) is in the first working position and the second working position, stepless speed regulation of flow can be achieved.
Further, the encoder (600) collects the numerical value of the lifting angle of the antenna array surface (1) in real time and feeds the numerical value back to the servo controller in real time.
The invention also provides a method for preventing unlocking impact of the hydraulic system of the radar lifting mechanism, which comprises the following steps:
the self-locking oil cylinder (100) obtains the pressure value of the rodless cavity A2 of the antenna array surface (1) at any lifting angle in advance through the pressure sensor (500), the thrust of the self-locking oil cylinder (100) is balanced with the gravity load of the antenna array surface (1), and an angle-pressure curve is formed between the thrust of the self-locking oil cylinder and the angle of the antenna array surface (1);
before the self-locking oil cylinder (100) acts, after the current antenna array surface (1) angle value fed back by the encoder (600) is judged to be within the lifting angle range, a preset oil supplementing pressure value required by the gravity load of the balanced antenna array surface (1) corresponding to the angle is obtained by calling an angle-pressure curve;
the servo controller controls the electric proportional reversing valve (200) to be in a first working position, oil is supplemented to a rodless cavity A2 of the self-locking oil cylinder (100), when the pressure of a rodless cavity A2 acquired by the pressure sensor (500) reaches a preset oil supplementing pressure value, the electric proportional reversing valve (200) loses power and returns to a zero position, and at the moment, the pressure in the rodless cavity A2 is maintained by the balance valve (400);
the servo controller controls the unlocking electromagnetic ball valve (300) to be powered on, the self-locking oil cylinder (100) is in an unlocking state, at the moment, the pressure in the rodless cavity A2 is just balanced with the gravity load of the front surface (1), unlocking impact cannot occur, finally, the servo controller controls the electric proportional directional valve (100) to be in a first working position or a second working position, the self-locking oil cylinder (100) performs lifting or descending action, and the unlocking electromagnetic ball valve (300) is always in a powered state in the action process.
The invention has the advantages that: the servo controller controls the electric proportional directional valve (200) to act to supplement oil to the rodless cavity A2 of the self-locking oil cylinder (100), when the pressure of the rodless cavity A2 acquired by the pressure sensor (500) reaches a preset oil supplementing pressure value, the electric proportional directional valve (200) loses power and returns to a zero position, the pressure in the rodless cavity A2 is maintained by the balance valve (400), when the self-locking oil cylinder (100) is unlocked, the servo controller controls the unlocking electromagnetic ball valve (300) to be powered on, the self-locking oil cylinder (100) is in an unlocking state, the pressure in the rodless cavity A2 is just balanced with the gravity load of a front surface, the unlocking impact cannot occur, and the phenomenon of the unlocking impact of a radar front surface caused by sudden removal of the self-locking force of the self-locking oil cylinder (100) at the instant of unlocking is effectively solved. Meanwhile, the preset oil supplementing pressure value is associated with the array surface angle value, and the servo controller can automatically call the preset oil supplementing pressure value required by the current array surface angle position through the numerical value of the encoder (600), so that the stepless balance of gravity loads generated by different array surface angles is realized.
Drawings
Fig. 1 is a schematic structural diagram of an unlocking impact prevention hydraulic system of a radar lifting mechanism disclosed by an embodiment of the invention;
fig. 2 is an antenna array surface assembly diagram of an unlocking impact prevention hydraulic system of a radar lifting mechanism disclosed by the embodiment of the invention;
FIG. 3 is a schematic view of an angle-pressure curve in an unlocking impact prevention hydraulic system of a radar lifting mechanism disclosed in the embodiment of the invention;
fig. 4 is a flowchart of a method for preventing unlocking impact of a hydraulic system of a radar lifting mechanism according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an unlocking impact prevention hydraulic system of a radar lifting mechanism comprises a hydraulic power source P1, a hydraulic power source P2, two parallel self-locking oil cylinders 100, an electric proportional directional valve 200, an unlocking electromagnetic ball valve 300, a balance valve 400, a pressure sensor 500 and an encoder 600, wherein an antenna array surface 1 is lifted, descended, supported and locked by the two parallel self-locking oil cylinders 100, rodless cavities a2 of the two self-locking oil cylinders 100 are communicated and communicated with a cavity opening a of the electric proportional directional valve 200 through the balance valve 400, rod cavities B2 of the two self-locking oil cylinders 100 are communicated and communicated with a cavity opening B of the electric proportional directional valve 200, unlocking cavities L2 of the two self-locking oil cylinders 100 are communicated and communicated with the unlocking electromagnetic ball valve 300, an oil return opening T of the electric proportional directional valve 200 and an oil return opening T2 of the unlocking electromagnetic ball valve 300 are communicated with an oil tank, the hydraulic power source P1 is communicated with an oil inlet of the electric proportional directional valve 200, the hydraulic power source P2 is communicated with an oil inlet of the unlocking electromagnetic ball valve 300; the pressure sensor 500 is arranged on a connecting pipeline between the rodless cavity A2 and the balance valve 400, the pressure of the rodless cavity A2 of the self-locking oil cylinder 100 is detected, the encoder 600 and the pitching main shaft of the antenna array surface 1 are coaxially mounted, the pressure sensor 500 and the encoder 600 are connected with the servo controller, and the encoder 600 collects the lifting angle value of the antenna array surface 1 in real time and feeds the value back to the servo controller in real time. The servo controller controls the flow of the electric proportional directional valve 200 and the opening and closing of the unlocking electromagnetic ball valve 300.
The hydraulic power source P1 provides pressure oil for the rodless cavity A2 or the rod cavity B2 of the self-locking oil cylinder 100, and the pressure value is determined by load. The hydraulic power source P2 provides high-pressure oil with constant pressure for the unlocking cavity L2 of the self-locking oil cylinder 100. The maximum pushing force or the maximum pulling force provided by the hydraulic power source P1 to the self-locking oil cylinder 100 is smaller than the locking force of the self-locking oil cylinder 100, that is, when the self-locking oil cylinder 100 is in a locking state, the piston rod of the self-locking oil cylinder 100 cannot move. The self-locking oil cylinder 100 is an expansion self-locking oil cylinder or a spring wedge locker self-locking oil cylinder.
When the unlocking electromagnetic ball valve 300 is powered off, the unlocking electromagnetic ball valve works in the right position, an unlocking cavity L2 of the self-locking oil cylinder 100 is communicated with an oil tank, and the self-locking oil cylinder 100 is in a locking state; when the unlocking electromagnetic ball valve 300 is powered on, the unlocking electromagnetic ball valve works in a left position, an unlocking cavity L2 of the self-locking oil cylinder 100 is communicated with a hydraulic power source P2, and the self-locking oil cylinder 100 is in an unlocking state.
The electric proportional reversing valve 200 is a three-position four-way valve, which belongs to the prior art, and the structure in the dotted line frame of the electric proportional reversing valve 200 in fig. 1 belongs to the existing inherent structure, and the application only focuses on the cavity opening a, the cavity opening B, the oil inlet and the oil return opening T of the electric proportional reversing valve 200, so that the internal structure is not described again, when the electric proportional reversing valve 200 is in a zero position, the hydraulic power source P1 is communicated with the oil tank, and the hydraulic system is in an unloading state; when the electric proportional directional valve 200 is at the first working position, the hydraulic power source P1 is communicated with the rodless cavity A2 of the self-locking oil cylinder 100 through the balance valve 400, the rod cavity B2 of the self-locking oil cylinder 100 is communicated with the oil tank, and the antenna array surface 1 lifting action is executed when the oil cylinder is unlocked; when the electric proportional directional valve 200 is in the second working position, the hydraulic power source P1 is communicated with the rod cavity B2 of the self-locking oil cylinder 100, the rodless cavity a2 of the self-locking oil cylinder 100 is communicated with the oil tank through the balance valve 400, and the antenna array surface 1 descending action is executed when the oil cylinder is unlocked. When the electric proportional directional valve 200 is located at the first working position and the second working position, stepless speed regulation of flow can be realized.
As shown in fig. 2, the present invention also provides a method of preventing an unlocking impact hydraulic system of a radar lifting mechanism, the method comprising: the antenna array surface 1 is lifted, descended, supported and locked by two self-locking oil cylinders 100, and the encoder 600 and the pitching main shaft of the radar antenna array surface 1 are coaxially arranged, so that the lifting angle numerical value is acquired in real time and fed back to the servo controller in real time. After the assembly of the radar array surface 1 is completed, the self-locking oil cylinder 100 executes the full-stroke lifting action. According to the force balance principle, the core of solving the unlocking impact lies in how to ensure that when unlocking is carried out, hydraulic oil in a rodless cavity of the oil cylinder needs to have pressure, the provided supporting force can be just balanced with the gravity load of the antenna array surface 1, the weightless impact of the array surface 1 can occur when the pressure is small, and the piston rod of the oil cylinder can suddenly extend to generate impact when the pressure is large. And, the required hydro-cylinder holding power is also different when the lifting angle of antenna array face 1 is different. The pressure value of the rodless cylinder chamber a2 at any elevation angle of the wavefront 1 is obtained in advance by the pressure sensor 500, and the cylinder thrust at this time is balanced with the wavefront 1 gravity load, forms an angle-pressure curve with the wavefront 1 angle, as shown in fig. 3, and is stored in the servo controller.
As shown in fig. 4, before the self-locking oil cylinder 100 acts, after the current antenna array surface 1 angle value fed back by the encoder 600 is judged to be within the lifting angle range, a preset oil compensation pressure value required for balancing the antenna array surface 1 gravity load corresponding to the angle is obtained by calling an angle-pressure curve;
then, the servo controller controls the electric proportional directional valve 200 to be in the first working position, oil is supplemented to the rodless cavity A2 of the self-locking oil cylinder 100 at a small flow rate, when the pressure of the rodless cavity A2 acquired by the pressure sensor 500 reaches a preset oil supplementing pressure value, the electric proportional directional valve 200 loses power and returns to a zero position, and at the moment, the pressure in the rodless cavity A2 is maintained by the balance valve 400;
the servo controller controls the unlocking electromagnetic ball valve 300 to be powered on, the self-locking oil cylinder 100 is in an unlocking state, the pressure in the rodless cavity A2 is just balanced with the gravity load of the front surface 1, unlocking impact cannot occur, finally, the servo controller controls the electric proportional directional valve 100 to be in the first working position or the second working position, the self-locking oil cylinder 100 performs lifting or descending actions, and the unlocking electromagnetic ball valve 300 is always in a powered state in the action process.
Through the technical scheme, the servo controller controls the electric proportional directional valve 200 to act to supplement oil to the rodless cavity A2 of the self-locking oil cylinder 100, when the pressure of the rodless cavity A2 acquired by the pressure sensor 500 reaches the preset oil supplementing pressure value, the electric proportional directional valve 200 loses power and returns to the zero position, the pressure in the rodless cavity A2 is maintained by the balance valve 400, and when the lock is unlocked, the servo controller controls the unlocking electromagnetic ball valve 300 to be powered on, the self-locking oil cylinder 100 is in an unlocking state, the pressure in the rodless cavity A2 is just balanced with the gravity load of the wavefront 1, unlocking impact cannot occur, the unlocking impact phenomenon of the radar wavefront 1 caused by sudden removal of the self-locking force of the oil cylinder at the unlocking moment of the self-locking oil cylinder 100 is effectively solved, the preset oil supplementing pressure value is associated with the wavefront angle value, and the servo controller calls the preset oil supplementing pressure value required by the current wavefront angle position through the numerical value of the encoder (600).
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An unlocking impact prevention hydraulic system of a radar lifting mechanism is characterized by comprising a hydraulic power source P1, a hydraulic power source P2, two parallel self-locking oil cylinders (100), an electric proportional reversing valve (200), an unlocking electromagnetic ball valve (300), a balance valve (400), a pressure sensor (500) and an encoder (600), wherein an antenna array surface (1) is lifted, descended, supported and locked through the two parallel self-locking oil cylinders (100), rodless cavities A2 of the two self-locking oil cylinders (100) are communicated and are communicated with a cavity opening A of the electric proportional reversing valve (200) through the balance valve (400), rod cavities B2 of the two self-locking oil cylinders (100) are communicated and are communicated with a cavity opening B of the electric proportional reversing valve (200), unlocking cavities L2 of the two self-locking oil cylinders (100) are communicated and are communicated with the unlocking electromagnetic ball valve (300), an oil return opening T of the electric proportional reversing valve (200) and an oil return opening T2 of the unlocking electromagnetic ball valve (300) are communicated with an oil tank, the hydraulic power source P1 is communicated with an oil inlet of the electric proportional reversing valve (200), and the hydraulic power source P2 is communicated with an oil inlet of the unlocking electromagnetic ball valve (300); the pressure sensor (500) is arranged on a connecting pipeline between the rodless cavity A2 and the balance valve (400), the encoder (600) and the pitching main shaft of the antenna array surface (1) are coaxially arranged, and the pressure sensor (500) and the encoder (600) are connected with the servo controller; the servo controller controls the electric proportional reversing valve (200) to act, oil is supplemented to a rodless cavity A2 of the self-locking oil cylinder (100), when the pressure of the rodless cavity A2 acquired by the pressure sensor (500) reaches a preset oil supplementing pressure value, the electric proportional reversing valve (200) loses power and returns to a zero position, and at the moment, the pressure in the rodless cavity A2 is maintained by the balance valve (400); the preset oil supplementing pressure value is related to the angle value of the array surface, and the servo controller calls the preset oil supplementing pressure value required by the current array surface angle position through the numerical value of the encoder (600).
2. The hydraulic system of claim 1, wherein the hydraulic power source P1 supplies pressurized oil to the rodless A2 or the rod B2 of the self-locking cylinder (100).
3. The hydraulic system of claim 1, wherein the hydraulic power source P2 provides high pressure oil with constant pressure to the unlocking cavity L2 of the self-locking cylinder (100).
4. The unlocking impact prevention hydraulic system of a radar lifting mechanism according to claim 1, wherein the maximum pushing force or the maximum pulling force provided by the hydraulic power source P1 to the self-locking cylinder (100) is smaller than the locking force of the self-locking cylinder (100), i.e. when the self-locking cylinder (100) is in the locking state, the piston rod of the self-locking cylinder (100) cannot move.
5. The unlocking impact prevention hydraulic system of a radar lifting mechanism according to claim 1, wherein the self-locking cylinder (100) is an expanding self-locking cylinder or a spring wedge locker self-locking cylinder.
6. The unlocking impact prevention hydraulic system of the radar lifting mechanism as claimed in claim 1, wherein when the unlocking electromagnetic ball valve (300) is powered off, the unlocking electromagnetic ball valve works in a right position, the unlocking cavity L2 of the self-locking oil cylinder (100) is communicated with an oil tank, and the self-locking oil cylinder (100) is in a locking state; when the unlocking electromagnetic ball valve (300) is electrified, the unlocking electromagnetic ball valve works at a left position, an unlocking cavity L2 of the self-locking oil cylinder (100) is communicated with a hydraulic power source P2, and the self-locking oil cylinder (100) is in an unlocking state.
7. The unlocking impact prevention hydraulic system of the radar lifting mechanism as claimed in claim 1, wherein the electric proportional directional valve (200) is a three-position four-way valve, when in zero position, the hydraulic power source P1 is communicated with an oil tank, and the hydraulic system is in an unloading state; when the electric proportional directional valve (200) is positioned at a first working position, a hydraulic power source P1 is communicated with a rodless cavity A2 of the self-locking oil cylinder (100) through a balance valve (400), a rod cavity B2 of the self-locking oil cylinder (100) is communicated with an oil tank, and when the oil cylinder is unlocked, the antenna array surface (1) is lifted; when the electric proportional directional valve (200) is in the second working position, the hydraulic power source P1 is communicated with the rod cavity B2 of the self-locking oil cylinder (100), the rodless cavity A2 of the self-locking oil cylinder (100) is communicated with the oil tank through the balance valve 400, and the antenna array face (1) descending action is executed when the oil cylinder is unlocked.
8. The unlocking impact prevention hydraulic system of the radar lifting mechanism as recited in claim 7, wherein the electro-proportional directional valve (200) can achieve stepless speed regulation of flow when being in the first working position and the second working position.
9. The hydraulic system for preventing unlocking impact of a radar lifting mechanism according to claim 1, wherein the encoder (600) collects the lifting angle value of the antenna array surface (1) in real time and feeds the value back to the servo controller in real time.
10. Method of unlocking impact prevention hydraulic system of radar lifting mechanism according to claims 1-9, characterized in that the method comprises:
the self-locking oil cylinder (100) obtains the pressure value of the rodless cavity A2 of the antenna array surface (1) at any lifting angle in advance through the pressure sensor (500), the thrust of the self-locking oil cylinder (100) is balanced with the gravity load of the antenna array surface (1), and an angle-pressure curve is formed between the thrust of the self-locking oil cylinder and the angle of the antenna array surface (1);
before the self-locking oil cylinder (100) acts, after the current antenna array surface (1) angle value fed back by the encoder (600) is judged to be within the lifting angle range, a preset oil supplementing pressure value required by the gravity load of the balanced antenna array surface (1) corresponding to the angle is obtained by calling an angle-pressure curve;
the servo controller controls the electric proportional reversing valve (200) to be in a first working position, oil is supplemented to a rodless cavity A2 of the self-locking oil cylinder (100), when the pressure of a rodless cavity A2 acquired by the pressure sensor (500) reaches a preset oil supplementing pressure value, the electric proportional reversing valve (200) loses power and returns to a zero position, and at the moment, the pressure in the rodless cavity A2 is maintained by the balance valve (400);
the servo controller controls the unlocking electromagnetic ball valve (300) to be powered on, the self-locking oil cylinder (100) is in an unlocking state, at the moment, the pressure in the rodless cavity A2 is just balanced with the gravity load of the front surface (1), unlocking impact cannot occur, finally, the servo controller controls the electric proportional directional valve (100) to be in a first working position or a second working position, the self-locking oil cylinder (100) performs lifting or descending action, and the unlocking electromagnetic ball valve (300) is always in a powered state in the action process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111591905.7A CN114263822B (en) | 2021-12-23 | 2021-12-23 | Unlocking-resistant impact hydraulic system and method of radar lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111591905.7A CN114263822B (en) | 2021-12-23 | 2021-12-23 | Unlocking-resistant impact hydraulic system and method of radar lifting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114263822A true CN114263822A (en) | 2022-04-01 |
| CN114263822B CN114263822B (en) | 2023-04-25 |
Family
ID=80829336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111591905.7A Active CN114263822B (en) | 2021-12-23 | 2021-12-23 | Unlocking-resistant impact hydraulic system and method of radar lifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114263822B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115479057A (en) * | 2022-08-01 | 2022-12-16 | 广东纳睿雷达科技股份有限公司 | Vehicle-mounted radar antenna pitching control system and control method thereof |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60132882A (en) * | 1983-12-22 | 1985-07-15 | 三菱電機株式会社 | Controller for hydraulic elevator |
| JPH06316384A (en) * | 1993-05-06 | 1994-11-15 | Hitachi Ltd | Control device for hydraulic elevator |
| DE4416194A1 (en) * | 1994-05-06 | 1995-11-09 | Rexroth Mannesmann Gmbh | Control system for hydraulically actuated unit |
| US5542888A (en) * | 1993-05-31 | 1996-08-06 | Mazda Motor Corporation | Automatic transmission control system with variable pressure discharge |
| US5810694A (en) * | 1994-09-30 | 1998-09-22 | Mazda Motor Corporation | Control system for automatic transmission |
| JP2001082410A (en) * | 1999-09-09 | 2001-03-27 | Hitachi Constr Mach Co Ltd | Hydraulic circuit device |
| JP2007032788A (en) * | 2005-07-29 | 2007-02-08 | Shin Caterpillar Mitsubishi Ltd | Fluid pressure controller for traveling working machine and fluid pressure control method for traveling working machine |
| JP2009036300A (en) * | 2007-08-01 | 2009-02-19 | Kobelco Contstruction Machinery Ltd | Turn controlling device |
| JP2009036351A (en) * | 2007-08-03 | 2009-02-19 | Kobelco Contstruction Machinery Ltd | Hydraulic traveling device |
| CN202187969U (en) * | 2011-04-28 | 2012-04-11 | 湖北合加环境设备有限公司 | Lifting hydraulic control loop and equipment of lifting horizontal rubbish compressing and transiting device |
| EP2698545A2 (en) * | 2012-08-17 | 2014-02-19 | Hydac System GmbH | Device for controlling the charge state of at least one pressure accumulator |
| CN103939405A (en) * | 2014-05-05 | 2014-07-23 | 山河智能装备股份有限公司 | Automatic quick leveling hydraulic control circuit of down-the-hole drill and control method thereof |
| CN204419760U (en) * | 2014-11-11 | 2015-06-24 | 中国电子科技集团公司第三十八研究所 | A kind of hydraulic system loss protecting device |
| CN104879334A (en) * | 2015-04-23 | 2015-09-02 | 凯迈（洛阳）测控有限公司 | Piston lifting mechanism and hydraulic control device thereof |
| CN106762890A (en) * | 2017-01-23 | 2017-05-31 | 中南大学 | A kind of test bed hydraulic control system of multifunction hydraulic |
| CN107178543A (en) * | 2017-07-26 | 2017-09-19 | 国电联合动力技术有限公司 | A kind of wind power generating set impeller locks hydraulic control system |
| CN111377380A (en) * | 2018-12-31 | 2020-07-07 | 上海格拉曼国际消防装备有限公司 | Method and device for arm support vibration reduction |
-
2021
- 2021-12-23 CN CN202111591905.7A patent/CN114263822B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60132882A (en) * | 1983-12-22 | 1985-07-15 | 三菱電機株式会社 | Controller for hydraulic elevator |
| JPH06316384A (en) * | 1993-05-06 | 1994-11-15 | Hitachi Ltd | Control device for hydraulic elevator |
| US5542888A (en) * | 1993-05-31 | 1996-08-06 | Mazda Motor Corporation | Automatic transmission control system with variable pressure discharge |
| DE4416194A1 (en) * | 1994-05-06 | 1995-11-09 | Rexroth Mannesmann Gmbh | Control system for hydraulically actuated unit |
| US5810694A (en) * | 1994-09-30 | 1998-09-22 | Mazda Motor Corporation | Control system for automatic transmission |
| JP2001082410A (en) * | 1999-09-09 | 2001-03-27 | Hitachi Constr Mach Co Ltd | Hydraulic circuit device |
| JP2007032788A (en) * | 2005-07-29 | 2007-02-08 | Shin Caterpillar Mitsubishi Ltd | Fluid pressure controller for traveling working machine and fluid pressure control method for traveling working machine |
| JP2009036300A (en) * | 2007-08-01 | 2009-02-19 | Kobelco Contstruction Machinery Ltd | Turn controlling device |
| JP2009036351A (en) * | 2007-08-03 | 2009-02-19 | Kobelco Contstruction Machinery Ltd | Hydraulic traveling device |
| CN202187969U (en) * | 2011-04-28 | 2012-04-11 | 湖北合加环境设备有限公司 | Lifting hydraulic control loop and equipment of lifting horizontal rubbish compressing and transiting device |
| EP2698545A2 (en) * | 2012-08-17 | 2014-02-19 | Hydac System GmbH | Device for controlling the charge state of at least one pressure accumulator |
| CN103939405A (en) * | 2014-05-05 | 2014-07-23 | 山河智能装备股份有限公司 | Automatic quick leveling hydraulic control circuit of down-the-hole drill and control method thereof |
| CN204419760U (en) * | 2014-11-11 | 2015-06-24 | 中国电子科技集团公司第三十八研究所 | A kind of hydraulic system loss protecting device |
| CN104879334A (en) * | 2015-04-23 | 2015-09-02 | 凯迈（洛阳）测控有限公司 | Piston lifting mechanism and hydraulic control device thereof |
| CN106762890A (en) * | 2017-01-23 | 2017-05-31 | 中南大学 | A kind of test bed hydraulic control system of multifunction hydraulic |
| CN107178543A (en) * | 2017-07-26 | 2017-09-19 | 国电联合动力技术有限公司 | A kind of wind power generating set impeller locks hydraulic control system |
| CN111377380A (en) * | 2018-12-31 | 2020-07-07 | 上海格拉曼国际消防装备有限公司 | Method and device for arm support vibration reduction |
Non-Patent Citations (1)
| Title |
|---|
| 吴影生等: "大型液压举升***设计实现" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115479057A (en) * | 2022-08-01 | 2022-12-16 | 广东纳睿雷达科技股份有限公司 | Vehicle-mounted radar antenna pitching control system and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114263822B (en) | 2023-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109882457B (en) | energy regeneration system of combined hydraulic cylinder | |
| CN110307195B (en) | Hydraulic bending machine electro-hydraulic control system of closed pump-controlled asymmetric cylinder | |
| CN102874697A (en) | Hydraulic system for controlling amplitude variation of arm support and crane | |
| CN114263822A (en) | Unlocking impact prevention hydraulic system and method for radar lifting mechanism | |
| CN107725510B (en) | Leveling control oil circuit for synchronously driving small crane supporting legs | |
| CN112010169B (en) | Blade hoisting tool and hydraulic system thereof | |
| CN102381230A (en) | Demountable tanker truck and hydraulic system thereof | |
| CN110228768A (en) | A kind of synchronization lifting mechanism of heavy duty four-way shuttle robot | |
| CN113027837A (en) | Bolt type hydraulic lifting platform control system and control method thereof | |
| CN211039183U (en) | Hydraulic system | |
| CN103015725A (en) | Boom hydraulic system, control method thereof, boom system and concrete pumping equipment | |
| CN112727814A (en) | Variable-speed and variable-displacement single-rod electro-hydraulic actuator | |
| CN114352591B (en) | Method for hydraulically and synchronously driving weights | |
| CN216430089U (en) | Multi-oil-cylinder synchronous control system based on variable flow and displacement feedback | |
| CN201412400Y (en) | Hydraulic control device of turnover mechanism and turnover mechanism | |
| CN112173994B (en) | Control valve unit, hydraulic control loop and engineering equipment with telescopic crane boom | |
| CN211965841U (en) | Hydraulic servo system for sliding part of sand shooting molding machine | |
| CN106542445A (en) | Crawler crane controllable type Weighting system | |
| CN115140688B (en) | Control system for adjusting rising and returning speeds of rocket | |
| CN216306357U (en) | Hydraulic control system of maintenance support vehicle auxiliary tool | |
| CN210260880U (en) | Anti-swing hydraulic system, anti-swing device and reach stacker | |
| CN219754918U (en) | Arm support hydraulic system and concrete pump truck | |
| CN210565412U (en) | Water hydraulic pressure digital control typical system loop | |
| CN112412903A (en) | Differentially-controlled mold opening and closing control loop and mold opening and closing control method for vulcanizing machine | |
| CN216618060U (en) | Active and passive motion compensation trestle amplitude varying system and trestle thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |