CN202986164U - Energy-saving control system for hydraulic machine - Google Patents
Energy-saving control system for hydraulic machine Download PDFInfo
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- CN202986164U CN202986164U CN 201220701151 CN201220701151U CN202986164U CN 202986164 U CN202986164 U CN 202986164U CN 201220701151 CN201220701151 CN 201220701151 CN 201220701151 U CN201220701151 U CN 201220701151U CN 202986164 U CN202986164 U CN 202986164U
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- pressure
- preset value
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Abstract
The utility model discloses an energy-saving control system for a hydraulic machine, comprising a controller, a driver, an encoder and a pressure sensor. The controller is electrically connected to the driver and sends a preset value to the driver. The driver is electrically connected to the encoder and the pressure sensor, to receive a rotating speed signal of a hydraulic machine motor acquired by the encoder and a pressure signal of the hydraulic machine collected by the pressure sensor. The rotating speed signal and the pressure signal are compared with a preset value, and a control signal for adjusting the rotating speed of the hydraulic machine motor is generated based on the comparison result. The energy-saving control system for a hydraulic machine is advantageous in that a pressure closed-loop control can be conducted on the hydraulic machine, and thereby the control effect is bettered and the energy-saving effect is achieved.
Description
Technical field
The utility model relates to the control technology field of hydraulic press, more particularly, relates to a kind of hydraulic press energy-saving control system.
Background technology
Hydraulic press is that a kind of fluid pressure that utilizes comes transferring energy, to realize the lathe of various pressure processing crafts.Application along with new technology and new technology, the application of hydraulic press aspect metal processing and nonmetal shaping is more and more extensive, the share of occupying in machine industry is significantly soaring, and along with environmental protection, energy-conservation advocating, energy-saving hydraulic press just becomes a kind of development trend.
At present, in order to realize energy-saving effect, the following dual mode of the general employing of hydraulic press: 1, just after pressurize finishes, motor is cut away, motor is opened when the needs ftercompction again, ftercompction is cut away motor after finishing again.2, use frequency converter, reduce the power output of the rotating speed reduction hydraulic pump of motor by frequency converter, make the power output and real-time load matched of hydraulic pump, reach the effect of economize on electricity.
But, the first power save mode, due to the starting of three phases motor electric current be the motor rated current 5-7 doubly, if motor quality is bad, even can reach 10 times, one-period is repeatedly opened motor, will increase energy consumption, energy-saving effect is unsatisfactory.The second power save mode, because motor moves under lower-speed state, the rotating speed of radiator fan also reduces simultaneously, do not reach the effect of heat radiation, motor temperature will raise, and frequency converter is to change the rotating speed of motor by the change of frequency, have the acceleration, deceleration process, response speed is slow; Frequency converter output voltage is comprised of many spike trains, exists higher hamonic wave, easily produces noise.
The utility model content
In view of this, the utility model provides a kind of hydraulic press energy-saving control system, to realize that hydraulic press is carried out pressure closed loop to be controlled, makes the control better effects if, plays energy-conservation effect.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of hydraulic press energy-saving control system comprises: controller, driver, encoder and pressure inductor; Wherein:
Described controller is connected with described actuator electrical, sends preset value to described driver;
Described driver is electrically connected to described encoder and described pressure inductor, receive the tach signal of the hydraulic press motor that described encoder obtains and the pressure signal of the hydraulic press that described pressure inductor gathers, and described tach signal and pressure signal and described preset value are compared, generate the control signal of adjusting the hydraulic press motor rotary speed according to comparative result.
Preferably, described preset value is pressure preset value and flow preset value.
Preferably, described pressure inductor also is electrically connected to described controller, and the pressure signal of described hydraulic press is sent to described controller;
Described controller compares described pressure signal and pressure preset value, generates the control signal of controlling the hydraulic pressure pump according to comparative result.
Preferably, also comprise the host computer that is electrically connected to described controller;
Set described preset value by described host computer, and described preset value is sent to described controller.
Preferably, carry out communication by RS232 between described host computer and described controller.
Preferably, described driver comprises: the first receiving element, the first transmitting element and the first comparing unit; Wherein:
Described the first receiving element is electrically connected to described the first comparing unit, receive the tach signal of preset value that described controller sends, hydraulic press motor that described encoder obtains and the pressure signal of the hydraulic press that described pressure inductor gathers, and described preset value, tach signal and pressure signal are sent to described the first comparing unit;
Described the first comparing unit is electrically connected to described the first transmitting element, and described tach signal and pressure signal and described preset value are compared, and generates the control signal of adjusting the hydraulic press motor rotary speed according to comparative result;
Described the first transmitting element sends described control signal.
Preferably, described controller comprises: DA module, AD module, the second receiving element, the second transmitting element and the second comparing unit; Wherein:
Described the second receiving element is electrically connected to described DA module, receives the preset value that described host computer sends;
Described DA module is electrically connected to described the second transmitting element, and described DA module is converted to analog signal with the described preset value that described the second receiving element receives, and is sent to the first receiving element of described driver by described the second transmitting element;
Described the second receiving element also is electrically connected to described AD module, receives the pressure signal that described pressure inductor sends;
Described AD module is electrically connected to described the second comparing unit, and described AD module is converted to data signal with the described pressure signal that described the second receiving element receives, and is sent to described the second comparing unit;
Described the second comparing unit is electrically connected to described the second transmitting element, and described pressure signal and described pressure preset value are compared, and generates the control signal of adjusting the hydraulic pressure pump according to comparative result;
Described the second transmitting element is sent to described control signal the first receiving element of described driver.
Preferably, described hydraulic pressure pump comprises the first pump and the second pump;
When described pressure signal during greater than described pressure preset value, the control signal that generates according to comparative result is controlled described the first pump and is quit work;
When described pressure signal during less than described pressure preset value, the control signal that generates according to comparative result controls described the first pump and the second pump is all worked.
Can find out from above-mentioned technical scheme, the disclosed a kind of hydraulic press energy-saving control system of the utility model obtains the tach signal of hydraulic press motor, and tach signal is sent to driver by encoder; Gather the pressure signal of hydraulic press by pressure inductor, and pressure signal is sent to driver; Driver compares the tach signal that receives and pressure signal and preset value, generate the control signal of adjusting the hydraulic press motor rotary speed according to comparative result, thereby control the pressure of hydraulic press, realized the closed-loop control of hydraulic press pressure, make the control better effects if, played energy-conservation effect.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the disclosed a kind of hydraulic press energy-saving control system of the utility model embodiment;
Fig. 2 is the structural representation of the disclosed a kind of hydraulic press energy-saving control system of another embodiment of the utility model;
Fig. 3 is the structural representation that the disclosed hydraulic press energy-saving control system of the utility model is applied to hydraulic press.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment discloses a kind of hydraulic press energy-saving control system, to realize that hydraulic press is carried out pressure closed loop to be controlled, makes the control better effects if, plays energy-conservation effect.
A kind of hydraulic press energy-saving control system, comprising: controller 11, driver 12, encoder 13 and pressure inductor 14 as shown in Figure 1; Wherein:
Concrete, described preset value is pressure preset value and flow preset value.
In the above-described embodiments, encoder 13 obtains the tach signal of hydraulic press motor, and tach signal is sent to driver 12; Pressure inductor 14 gathers the pressure signal of hydraulic press, and pressure signal is sent to driver 12;
The first receiving element in driver 12 is electrically connected to the first comparing unit, receive the pressure signal that preset value that controller 11 sends, tach signal that encoder 13 sends and pressure inductor 14 send, and described preset value, tach signal and pressure signal are sent to the first comparing unit in driver 12;
The first comparing unit in driver 12 is electrically connected to the first transmitting element in driver 12, tach signal and pressure signal and preset value are compared, and generate to adjust the control signal of hydraulic press motor rotary speed according to comparative result, thereby the pump in the control hydraulic press is adjusted the pressure of hydraulic press, the closed-loop control of realization to pressure, make the control better effects if, played energy-conservation effect.
Another embodiment of the present utility model also discloses a kind of hydraulic press energy-saving control system, comprising: controller 21, driver 22, encoder 23, pressure inductor 24 and host computer 25; Wherein:
Concrete, described preset value is pressure preset value and flow preset value;
Concrete, on the basis of above-described embodiment, in the present embodiment, the second receiving element in controller 21 is electrically connected to DA module in controller 21, the preset value of reception host computer 25 transmissions;
The DA module is electrically connected to the second transmitting element in controller 21, and the preset value that the DA module receives the second receiving element is converted to analog signal by digital-to-analogue conversion, sends the first receiving element of driver 22 by the second transmitting element;
The second receiving element of controller 21 also is electrically connected to the AD module of controller 21, receives the pressure signal that pressure inductor 24 sends;
The AD module is electrically connected to the second comparing unit, and the AD module is passed through analog-to-digital conversion with the pressure signal that the second receiving element receives, and is converted to data signal, and is sent to the second comparing unit;
The second comparing unit is electrically connected to the second transmitting element, and described pressure signal and described pressure preset value are compared, and generates the control signal of adjusting the hydraulic pressure pump according to comparative result;
Concrete hydraulic pressure pump comprises the first pump and the second pump, and wherein the first pump is large pump, and the second pump is little pump, and when described pressure signal during greater than described pressure preset value, the control signal that generates according to comparative result is controlled the first pump (large pump) and quit work; When described pressure signal during less than described pressure preset value, the control signal that generates according to comparative result controls the first pump (large pump) and the second pump (little pump) is all worked.
As shown in Figure 3, be applied to the structural representation of hydraulic press for the disclosed hydraulic press energy-saving control system of the utility model, comprise host computer 31, controller 32, driver 33, pressure sensor 34, encoder 35, motor 36, pump 37, oil circuit valve plate 38 and oil cylinder 39; Wherein:
In whole control system structure, the user sets technological parameter on the man-machine interface of host computer 31, be transferred to controller 32 by RS232, controller 32 is changed by DA control signal is passed to driver 33, driver 33 is controlled speed and the position of motor 36, change in real time speed and the position of motor 36 according to the condition of production, if deviation appears in speed or position, at this moment by encoder 35 with motor 36 data feedbacks that gather to driver 32, by the driver 32 needed speed of governor motor 36 and positions, the whole production of working good.Simultaneously, the actual pressure of pressure inductor 34 real-time monitoring systems, and data are passed to driver 32, and form a closed-loop system at this, allow the real-time situation according to pump of motor 36 regulate best speed and position.
In addition, system's actual pressure that pressure inductor 34 monitors is also passed to controller 32, so that controller 32 is done the control of duplex pump, in servo-drive system, pump 37 uses duplex pump (large pump+little pump), motor 36 drives two pumps simultaneously, when system pressure is low (＜70bar), large pump and little pump are jointly to system's oil cylinder 39 fuel feeding, when system pressure is elevated to set pressure (70bar), large pump is through valve off-load oil return case, and only continued to system's oil cylinder 39 fuel feeding by little pump, on the value that hydraulic system pressure is remained on set up.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that between each embodiment, identical similar part is mutually referring to getting final product.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from spirit or scope of the present utility model, realization in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a hydraulic press energy-saving control system, is characterized in that, comprising: controller, driver, encoder and pressure inductor; Wherein:
Described controller is connected with described actuator electrical, sends preset value to described driver;
Described driver is electrically connected to described encoder and described pressure inductor, receive the tach signal of the hydraulic press motor that described encoder obtains and the pressure signal of the hydraulic press that described pressure inductor gathers, and described tach signal and pressure signal and described preset value are compared, generate the control signal of adjusting the hydraulic press motor rotary speed according to comparative result.
2. control system according to claim 1, is characterized in that, described preset value is pressure preset value and flow preset value.
3. system according to claim 1, is characterized in that, described pressure inductor also is electrically connected to described controller, and the pressure signal of described hydraulic press is sent to described controller;
Described controller compares described pressure signal and pressure preset value, generates the control signal of controlling the hydraulic pressure pump according to comparative result.
4. system according to claim 3, is characterized in that, also comprises the host computer that is electrically connected to described controller;
Set described preset value by described host computer, and described preset value is sent to described controller.
5. system according to claim 4, is characterized in that, carries out communication by RS232 between described host computer and described controller.
6. system according to claim 5, is characterized in that, described driver comprises: the first receiving element, the first transmitting element and the first comparing unit; Wherein:
Described the first receiving element is electrically connected to described the first comparing unit, receive the tach signal of preset value that described controller sends, hydraulic press motor that described encoder obtains and the pressure signal of the hydraulic press that described pressure inductor gathers, and described preset value, tach signal and pressure signal are sent to described the first comparing unit;
Described the first comparing unit is electrically connected to described the first transmitting element, and described tach signal and pressure signal and described preset value are compared, and generates the control signal of adjusting the hydraulic press motor rotary speed according to comparative result;
Described the first transmitting element sends described control signal.
7. system according to claim 6, is characterized in that, described controller comprises: DA module, AD module, the second receiving element, the second transmitting element and the second comparing unit; Wherein:
Described the second receiving element is electrically connected to described DA module, receives the preset value that described host computer sends;
Described DA module is electrically connected to described the second transmitting element, and described DA module is converted to analog signal with the described preset value that described the second receiving element receives, and is sent to the first receiving element of described driver by described the second transmitting element;
Described the second receiving element also is electrically connected to described AD module, receives the pressure signal that described pressure inductor sends;
Described AD module is electrically connected to described the second comparing unit, and described AD module is converted to data signal with the described pressure signal that described the second receiving element receives, and is sent to described the second comparing unit;
Described the second comparing unit is electrically connected to described the second transmitting element, and described pressure signal and described pressure preset value are compared, and generates the control signal of adjusting the hydraulic pressure pump according to comparative result;
Described the second transmitting element is sent to described control signal the first receiving element of described driver.
8. system according to claim 7, is characterized in that, described hydraulic pressure pump comprises the first pump and the second pump;
When described pressure signal during greater than described pressure preset value, the control signal that generates according to comparative result is controlled described the first pump and is quit work;
When described pressure signal during less than described pressure preset value, the control signal that generates according to comparative result controls described the first pump and the second pump is all worked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220701151 CN202986164U (en) | 2012-12-17 | 2012-12-17 | Energy-saving control system for hydraulic machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220701151 CN202986164U (en) | 2012-12-17 | 2012-12-17 | Energy-saving control system for hydraulic machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202986164U true CN202986164U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220701151 Withdrawn - After Issue CN202986164U (en) | 2012-12-17 | 2012-12-17 | Energy-saving control system for hydraulic machine |
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| Country | Link |
|---|---|
| CN (1) | CN202986164U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042715A (en) * | 2012-12-17 | 2013-04-17 | 宁波弘讯科技股份有限公司 | Energy-saving control system and method of hydraulic machine |
| CN106723158A (en) * | 2016-11-10 | 2017-05-31 | 四川苍溪红猕王猕猴桃协会 | A kind of safety and stability type Kiwi berry cleaning equipment |
| CN112373113A (en) * | 2020-09-30 | 2021-02-19 | 合升翔液压技术(武汉)有限公司 | Energy-saving hydraulic press control system |
-
2012
- 2012-12-17 CN CN 201220701151 patent/CN202986164U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042715A (en) * | 2012-12-17 | 2013-04-17 | 宁波弘讯科技股份有限公司 | Energy-saving control system and method of hydraulic machine |
| CN106723158A (en) * | 2016-11-10 | 2017-05-31 | 四川苍溪红猕王猕猴桃协会 | A kind of safety and stability type Kiwi berry cleaning equipment |
| CN112373113A (en) * | 2020-09-30 | 2021-02-19 | 合升翔液压技术(武汉)有限公司 | Energy-saving hydraulic press control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130612 Effective date of abandoning: 20160113 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |