CN111075796A - Hydraulic braking device - Google Patents
Hydraulic braking device Download PDFInfo
- Publication number
- CN111075796A CN111075796A CN201811230912.2A CN201811230912A CN111075796A CN 111075796 A CN111075796 A CN 111075796A CN 201811230912 A CN201811230912 A CN 201811230912A CN 111075796 A CN111075796 A CN 111075796A
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- CN
- China
- Prior art keywords
- hydraulic
- pipeline
- pressure
- backflow
- auxiliary
- 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.)
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Classifications
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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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/007—Overload
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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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
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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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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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
- F15B21/008—Reduction of noise or vibration
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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
- F15B21/087—Control strategy, e.g. with block diagram
Abstract
The hydraulic braking device comprises a hydraulic piston mechanism and a hydraulic supply mechanism, wherein the hydraulic piston mechanism and the hydraulic supply mechanism are connected through a hydraulic conveying pipeline and a hydraulic return pipeline, a return control valve is arranged on the hydraulic return pipeline, the hydraulic piston mechanism comprises a hydraulic cavity and a moving piston, the moving piston is arranged in the hydraulic cavity, and the hydraulic cavity is connected with the hydraulic conveying pipeline and the hydraulic return pipeline. In the prior art, the hydraulic auxiliary control mechanism is arranged so as to check and release excessive change of the hydraulic pressure from time to time. Thereby the problem that the excessive pressure at the tail end of the hydraulic output can not be released in the prior art is solved.
Description
Technical Field
The invention relates to the field of hydraulic machinery, in particular to a hydraulic brake device.
Background
Since the fluid has the characteristic of transmitting pressure, the conversion of a smaller pressure into a larger pressure is facilitated, and particularly the liquid has an almost constant volume at different pressures. Therefore, liquid is often used for pressure transmission in many machines, particularly cranes, excavators, and the like.
During the hydraulic output process, the clamping condition often occurs, and particularly, the excessive pressure of the machine at the tail end of the output generates impact on the machine, and the impact can greatly shorten the service life of the machine. The problem that excessive pressure at the tail end of a hydraulic output cannot be released in the prior art is solved. Therefore, improvements in the prior art are needed.
Disclosure of Invention
The invention provides a hydraulic brake device, which is used for solving the problem that excessive pressure at the tail end of a hydraulic output cannot be released in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
a hydraulic braking device comprises a hydraulic piston mechanism and a hydraulic supply mechanism, wherein the hydraulic piston mechanism and the hydraulic supply mechanism are connected with a hydraulic return pipeline through a hydraulic conveying pipeline, and a return control valve is arranged on the hydraulic return pipeline;
the hydraulic piston mechanism comprises a hydraulic cavity and a moving piston, the moving piston is arranged in the hydraulic cavity, and the hydraulic cavity is connected with the hydraulic conveying pipeline and the hydraulic return pipeline;
the hydraulic supply mechanism comprises a hydraulic machine, a hydraulic output control mechanism and a hydraulic auxiliary control mechanism, and the hydraulic machine is connected with the hydraulic conveying pipeline and the hydraulic return pipeline through the hydraulic output control mechanism;
the hydraulic auxiliary control mechanism comprises a pressure testing unit, a pressure reducing pipeline, a pressure reducing electromagnetic valve and a controller, wherein the pressure reducing pipeline is connected with the hydraulic cavity, the pressure reducing electromagnetic valve is arranged on the pressure reducing pipeline, the pressure testing unit is arranged on the pressure reducing pipeline and is positioned between the hydraulic cavity and the pressure reducing electromagnetic valve, and the pressure testing unit and the pressure reducing electromagnetic valve are respectively electrically connected with the controller.
Compared with the prior art, the hydraulic auxiliary control mechanism is arranged so as to check and release the excessive change of the hydraulic pressure from time to time. Thereby the problem that the excessive pressure at the tail end of the hydraulic output can not be released in the prior art is solved.
The further improvement is that a liquid storage device is arranged at the input end of the hydraulic machine, and the liquid storage device is respectively connected with the hydraulic return pipeline and the pressure reducing pipeline.
The improvement is that a clock signal generator is arranged on the controller.
A further improvement is that the clock signal generator is a quartz clock signal generator.
The further improvement is that a one-way conduction valve is arranged on the hydraulic conveying pipeline.
The hydraulic backflow control system is further improved in that an auxiliary backflow pipe is arranged on the hydraulic backflow pipeline, an auxiliary backflow valve is arranged on the auxiliary backflow pipe, the auxiliary backflow pipe is connected with the hydraulic backflow pipeline, and two ends of the auxiliary backflow pipe are respectively located on two sides of the backflow control valve.
The further improvement is that the reflux control valve and the auxiliary reflux valve are electromagnetic valves, and the reflux control valve and the auxiliary reflux valve are connected with the controller.
The further improvement is that a pressure sensor is arranged on the pressure testing unit and is connected with the controller.
Drawings
FIG. 1 is a schematic structural view of a hydraulic brake device according to the present invention;
FIG. 2 is a schematic view of an auxiliary return pipe of a hydraulic brake apparatus according to the present invention;
fig. 3 is a schematic diagram of a hydraulic auxiliary control structure of a hydraulic brake device according to the present invention.
Detailed Description
In order to make the technical means, the inventive features, the objectives and the effects of the invention easy to understand, the invention will be further described with reference to the accompanying drawings.
According to the hydraulic brake device provided by the invention, as shown in fig. 1, the hydraulic brake device comprises a hydraulic piston mechanism and a hydraulic supply mechanism, wherein the hydraulic piston mechanism and the hydraulic supply mechanism are connected through a hydraulic conveying pipeline 1 and a hydraulic return pipeline 2. The hydraulic conveying pipeline 1 is provided with a one-way conduction valve 11, and the hydraulic return pipeline 2 is provided with a return control valve 21.
The hydraulic piston mechanism comprises a hydraulic cavity 3 and a moving piston 31, the moving piston 31 is arranged in the hydraulic cavity 3, and the hydraulic cavity 3 is connected with a hydraulic conveying pipeline 1 and a hydraulic return pipeline 2.
The hydraulic supply mechanism comprises a hydraulic machine 4, a hydraulic output control mechanism 5 and a hydraulic auxiliary control mechanism 6, wherein the hydraulic machine 4 is connected with the hydraulic conveying pipeline 1 and the hydraulic return pipeline 2 through the hydraulic output control mechanism 5.
As shown in fig. 2, an auxiliary return pipe 22 is disposed on the hydraulic return pipe 2, an auxiliary return valve 23 is disposed on the auxiliary return pipe 22, the auxiliary return pipe 22 is connected to the hydraulic return pipe 2, and two ends of the auxiliary return pipe 22 are respectively disposed at two sides of the return control valve 21.
As shown in fig. 3, the hydraulic assist control mechanism 6 includes a pressure test unit 61, a pressure reducing pipe 62, a pressure reducing solenoid valve 63, and a controller 64. The pressure reducing pipeline 62 is connected with the hydraulic cavity 3, the pressure reducing solenoid valve 63 is arranged on the pressure reducing pipeline 62, the pressure testing unit 61 is arranged on the pressure reducing pipeline 62 and located between the hydraulic cavity 3 and the pressure reducing solenoid valve 63, and the pressure testing unit 61 is provided with a pressure sensor which is connected with the controller 64. The pressure test unit 61 and the pressure reducing solenoid valve 63 are electrically connected to a controller 64, respectively.
The input end of the hydraulic machine 4 is provided with a liquid storage device 41, and the liquid storage device 41 is respectively connected with the hydraulic return pipeline 2 and the pressure reducing pipeline 62. The return flow control valve 21 and the auxiliary return valve 23 are solenoid valves, and the return flow control valve 21 and the auxiliary return valve 23 are connected to the controller 64. The controller 64 is provided with a clock signal generator, which is a quartz clock signal generator.
In use, the hydraulic machine 4 delivers hydraulic fluid to the hydraulic chamber 3 via the hydraulic output control mechanism 5, and the fluid in the hydraulic chamber 3 pushes the moving piston 31 to move. At this time, the pressure test unit 61 on the pressure reducing pipe 62 connected to the hydraulic chamber 3 detects the pressure of the hydraulic fluid in the hydraulic chamber 3 from time to time, and transmits it to the controller 64. The controller 64 detects the pressure change of the hydraulic fluid in the hydraulic chamber 3 at the time of the period of the clock signal, and activates the pressure reducing solenoid valve 63 to release the pressure of the hydraulic fluid when the pressure change of the adjacent period of the clock signal is too large.
When the moving piston 31 is reset, the auxiliary return valve 23 is firstly started to release hydraulic fluid slightly and slowly, and then the return control valve 21 is started to close the auxiliary return valve 23 to release hydraulic fluid greatly, so that mechanical shock caused by directly releasing hydraulic fluid greatly is avoided.
The invention has the beneficial effects that: thereby check hydraulic pressure's too strong change often and release it through setting up hydraulic pressure auxiliary control mechanism to the problem that the terminal too strong pressure of hydraulic output can not release among the prior art has been solved. By arranging the auxiliary return pipe, the hydraulic shock at the initial stage of hydraulic pressure release is further reduced, and the impact on the machine is reduced.
Specific embodiments of the invention have been described above. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; various changes or modifications may be made by one skilled in the art within the scope of the claims without departing from the spirit of the invention, and without affecting the spirit of the invention.
Claims (8)
1. The utility model provides a hydraulic braking device, hydraulic braking device includes hydraulic piston mechanism and hydraulic pressure feed mechanism, hydraulic piston mechanism with hydraulic pressure feed mechanism is connected through hydraulic pressure pipeline and hydraulic pressure return line, be equipped with backward flow control valve, its characterized in that on the hydraulic pressure return line:
the hydraulic piston mechanism comprises a hydraulic cavity and a moving piston, the moving piston is arranged in the hydraulic cavity, and the hydraulic cavity is connected with the hydraulic conveying pipeline and the hydraulic return pipeline;
the hydraulic supply mechanism comprises a hydraulic machine, a hydraulic output control mechanism and a hydraulic auxiliary control mechanism, and the hydraulic machine is connected with the hydraulic conveying pipeline and the hydraulic return pipeline through the hydraulic output control mechanism;
the hydraulic auxiliary control mechanism comprises a pressure testing unit, a pressure reducing pipeline, a pressure reducing electromagnetic valve and a controller, wherein the pressure reducing pipeline is connected with the hydraulic cavity, the pressure reducing electromagnetic valve is arranged on the pressure reducing pipeline, the pressure testing unit is arranged on the pressure reducing pipeline and is positioned between the hydraulic cavity and the pressure reducing electromagnetic valve, and the pressure testing unit and the pressure reducing electromagnetic valve are respectively electrically connected with the controller.
2. A hydraulic brake apparatus as claimed in claim 1, wherein: and the input end of the hydraulic machine is provided with a liquid storage device, and the liquid storage device is respectively connected with the hydraulic backflow pipeline and the pressure reducing pipeline.
3. A hydraulic brake apparatus as claimed in claim 1, wherein: and the controller is provided with a clock signal generator.
4. A hydraulic brake apparatus according to claim 3, wherein: the clock signal generator is a quartz clock signal generator.
5. A hydraulic brake apparatus as claimed in claim 1, wherein: and the hydraulic conveying pipeline is provided with a one-way conduction valve.
6. A hydraulic brake apparatus as claimed in claim 1, wherein: the hydraulic backflow pipeline is provided with an auxiliary backflow pipe, the auxiliary backflow pipe is provided with an auxiliary backflow valve, the auxiliary backflow pipe is connected with the hydraulic backflow pipeline, and two ends of the auxiliary backflow pipe are respectively located on two sides of the backflow control valve.
7. A hydraulic brake apparatus according to claim 6, wherein: the backflow control valve and the auxiliary backflow valve are electromagnetic valves, and the backflow control valve and the auxiliary backflow valve are connected with the controller.
8. A hydraulic brake apparatus as claimed in claim 1, wherein: and the pressure testing unit is provided with a pressure sensor, and the pressure sensor is connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230912.2A CN111075796A (en) | 2018-10-22 | 2018-10-22 | Hydraulic braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230912.2A CN111075796A (en) | 2018-10-22 | 2018-10-22 | Hydraulic braking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111075796A true CN111075796A (en) | 2020-04-28 |
Family
ID=70308238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811230912.2A Pending CN111075796A (en) | 2018-10-22 | 2018-10-22 | Hydraulic braking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111075796A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202579378U (en) * | 2011-12-30 | 2012-12-05 | 柳州泰姆预应力机械有限公司 | Intelligent tensioning system |
| CN102937150A (en) * | 2012-11-09 | 2013-02-20 | 重庆长安汽车股份有限公司 | Moment-limiting clutch hydraulic control system of hybrid electric vehicle and control method thereof |
| CN204628155U (en) * | 2015-05-12 | 2015-09-09 | 成都液力机械有限公司 | A kind of hydraulic cushion braking system |
| WO2016051815A1 (en) * | 2014-09-30 | 2016-04-07 | 株式会社クボタ | Work machine hydraulic system and work machine |
| CN205876833U (en) * | 2016-08-18 | 2017-01-11 | 山东临朐静远石油机械有限公司 | Hydraulic swivel head and for power tong countertorque sustained -release devices |
| CN107208673A (en) * | 2015-06-09 | 2017-09-26 | 日立建机株式会社 | The fluid power system of Work machine |
-
2018
- 2018-10-22 CN CN201811230912.2A patent/CN111075796A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202579378U (en) * | 2011-12-30 | 2012-12-05 | 柳州泰姆预应力机械有限公司 | Intelligent tensioning system |
| CN102937150A (en) * | 2012-11-09 | 2013-02-20 | 重庆长安汽车股份有限公司 | Moment-limiting clutch hydraulic control system of hybrid electric vehicle and control method thereof |
| WO2016051815A1 (en) * | 2014-09-30 | 2016-04-07 | 株式会社クボタ | Work machine hydraulic system and work machine |
| CN204628155U (en) * | 2015-05-12 | 2015-09-09 | 成都液力机械有限公司 | A kind of hydraulic cushion braking system |
| CN107208673A (en) * | 2015-06-09 | 2017-09-26 | 日立建机株式会社 | The fluid power system of Work machine |
| CN205876833U (en) * | 2016-08-18 | 2017-01-11 | 山东临朐静远石油机械有限公司 | Hydraulic swivel head and for power tong countertorque sustained -release devices |
Non-Patent Citations (2)
| Title |
|---|
| 刘好增等: "《镁合金压铸工艺与模具》", 30 April 2010 * |
| 王汀: "《微处理机原理与接口技术》", 30 September 2008 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200428 |