CN214788313U - Hydraulic automatic compensation device for balance cylinder - Google Patents
Hydraulic automatic compensation device for balance cylinder Download PDFInfo
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- CN214788313U CN214788313U CN202120789190.5U CN202120789190U CN214788313U CN 214788313 U CN214788313 U CN 214788313U CN 202120789190 U CN202120789190 U CN 202120789190U CN 214788313 U CN214788313 U CN 214788313U
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Abstract
The utility model discloses a hydraulic automatic compensation device of a balance cylinder, which comprises a gravity shaft balance device and a hydraulic automatic compensation device of the balance cylinder, wherein the gravity shaft balance device is connected with the hydraulic automatic compensation device of the balance cylinder; the hydraulic automatic compensation device of the balance cylinder comprises a hydraulic pump, an overflow electromagnetic valve, a one-way valve, a pressure sensor and an electromagnetic directional valve; the rear end of the hydraulic pump is connected with an overflow electromagnetic valve, the rear end of the overflow electromagnetic valve is connected with a one-way valve, the rear end of the one-way valve is connected with an electromagnetic directional valve, the rear end of the electromagnetic directional valve is connected with a pressure sensor, the rear end of the pressure sensor is connected with a pipeline, and the pipeline is connected with a gravity balance cylinder device pipeline. The utility model has the advantages that: 1. the improvement measures are improved from initial manual pressure compensation to automatic pressure compensation and pressure relief, so that hydraulic automatic compensation of a balance cylinder system is realized, and balanced and accurate pressure maintaining is realized; 2. the device greatly reduces the failure rate of the equipment and reduces the maintenance time.
Description
Technical Field
The utility model relates to a numerical control machining center gravity shaft balancing unit specifically is a balance cylinder hydraulic pressure automatic compensating device.
Background
In a numerical control processing site, the gravity shaft of most equipment adopts a balance cylinder hydraulic system to relieve the load of a gravity shaft motor, the whole set of configuration is realized by the hydraulic system, the main components of the hydraulic system comprise a hydraulic device and an energy storage device, the hydraulic system has the characteristics of expansion with heat and contraction with cold, the pressure of the equipment is changed at any time in the frequent operation process, and the equipment is realized by detecting the pipeline pressure by adopting a pressure sensor to ensure the reliability and stability of the balance cylinder device. However, the hydraulic system of the equipment is not provided with an automatic compensation device, and has the following problems: (1) the part is easily damaged by sudden power failure caused by unbalanced pressure in the operation process of the equipment; (2) manual compensation and pressure release are required, the manual compensation efficiency is low, and the production is frequently interrupted; (3) manual pressure compensation and pressure relief are difficult to achieve accurate control, so that one set of external automatic compensation device is needed, automatic compensation of pressure of the balancing device is achieved, and production efficiency is improved.
Disclosure of Invention
The utility model aims at providing a balance cylinder hydraulic pressure automatic compensation device solves the unable automatic hydraulic pressure compensation problem of balancing unit hydraulic system, reaches the purpose to the accurate control of balancing unit hydraulic pressure compensation system.
The utility model adopts the technical scheme as follows: the automatic hydraulic compensation device of the balance cylinder comprises a gravity shaft balance device and a hydraulic automatic compensation device of the balance cylinder, wherein the gravity shaft balance device is connected with the hydraulic automatic compensation device of the balance cylinder; the hydraulic automatic compensation device of the balance cylinder comprises a hydraulic pump, an overflow electromagnetic valve, a one-way valve, a pressure sensor and an electromagnetic directional valve; the rear end of the hydraulic pump is connected with an overflow electromagnetic valve, the rear end of the overflow electromagnetic valve is connected with a one-way valve, the rear end of the one-way valve is connected with an electromagnetic directional valve, the rear end of the electromagnetic directional valve is connected with a pressure sensor, the rear end of the pressure sensor is connected with a pipeline, and the pipeline is connected with a gravity balance cylinder device pipeline.
Furthermore, the gravity shaft balancing device consists of two balancing cylinders, three energy accumulators and a nitrogen gas cylinder, the nitrogen gas cylinder is connected with the three parallel energy accumulators, and the three parallel energy accumulators are connected with the two parallel balancing cylinders.
Further, the hydraulic pump is placed on the hydraulic oil tank.
Further, the automatic hydraulic compensation device of the balance cylinder is a complete hydraulic control system, and the main working conditions are as follows: when the detection element detects that the pipeline pressure is lower than the rated pressure, the pressure sensor receives a signal and feeds the signal back to the relay, and the output control hydraulic motor and the electromagnetic valve are executed to act, so that the compensation to the rated pressure is completed; when the pressure is higher than the rated pressure, the pressure sensor receives a signal and feeds the signal back to the relay to execute output action, and the electromagnetic valve is controlled to complete pressure relief to the rated pressure.
The utility model has the advantages that: 1. the improvement measures are improved from initial manual pressure compensation to automatic pressure compensation and pressure relief, so that hydraulic automatic compensation of a balance cylinder system is realized, and balanced and accurate pressure maintaining is realized; 2. the device greatly reduces the failure rate of the equipment and reduces the maintenance time; 3. the device reduces the running of the gravity shaft when power failure causes part gnawing due to pressure failure, can reduce the hidden quality trouble, and reduces the production cost.
Drawings
Fig. 1 the utility model discloses an original gravity shaft balancing unit schematic diagram.
Fig. 2 the utility model discloses a newly-increased balance cylinder hydraulic pressure automatic compensation device schematic diagram.
Fig. 3 the utility model discloses a balance cylinder hydraulic pressure automatic compensation device schematic diagram.
Fig. 4 shows an electrical control schematic diagram of the automatic compensation device of the present invention.
In the figure, (1) a hydraulic pump, (2) a hydraulic pipeline, (3) an overflow electromagnetic valve, (4) a check valve, (5) a pressure sensor, and (6) an electromagnetic directional valve.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, a schematic diagram of a hydraulic automatic compensation device of a balancing cylinder mainly comprises a hydraulic pump CV (1), an overflow electromagnetic valve S1(3), a check valve (4), a pressure sensor PS1(5), and an electromagnetic directional valve YV1(6), so as to realize pressure compensation and pressure relief of a pipeline; the rear end of the hydraulic pump (1) is connected with the overflow electromagnetic valve (3), the rear end of the overflow electromagnetic valve (3) is connected with the one-way valve (4), the rear end of the one-way valve (4) is connected with the electromagnetic directional valve (6), the rear end of the electromagnetic directional valve (6) is connected with the pressure sensor (5), the rear end of the pressure sensor (5) is connected with a pipeline, and the pipeline is connected with a gravity balance cylinder device pipeline. Wherein the hydraulic pump CV (1) is provided with a hydraulic pipeline (2); referring to fig. 4, the electrical control schematic diagram mainly includes a fuse protection FU, a thermal relay FR, a contactor KM1, relays KA1, KA2, so as to achieve the purpose of automatic compensation and realize pressure equalization of the balancing device.
The hydraulic automatic compensation device for the balance cylinder has the following specific implementation modes: (1) when the pipeline pressure detection sensor detects that the pipeline is lower than the set rated pressure, the SP1 obtains signals KA1 and KM1, the power is obtained, the attraction control hydraulic pump performs pressure compensation to the rated pressure, and then the operation is stopped; (2) when the detected pipeline pressure is higher than the set rated pressure, the SP2 is electrified KA2, the attraction control solenoid valve YV1 is electrified to execute pressure relief, namely the solenoid valve YV1 is turned off, the pipeline pressure is kept within the set range all the time, the relays KA1 and KA2 are interlocked, and further the pressure compensation and the pressure relief are not influenced by each other.
The utility model relates to a principle: the automatic compensation device is a set of complete hydraulic control system and comprises a pump, a hydraulic pipeline, various valves and detection elements; the main working conditions are as follows: when the detection element detects that the pipeline pressure is lower than the rated pressure, the sensor receives a signal and feeds the signal back to the relay, and the output control hydraulic motor and the electromagnetic valve are executed to act, so that the compensation to the rated pressure is completed; when the pressure is higher than the rated pressure, the sensor receives a signal and feeds the signal back to the relay to execute output action, so as to control the electromagnetic valve and complete pressure relief to the rated pressure.
The specific control principle is as follows:
(1) when the sensor PS1 (shown in the figure 3) detects that the pressure of the pipeline of the balance system is lower than a rated value, the low-voltage end of the sensor outputs a signal, the SP1 (shown in the figure 4) is electrified and conducted, the KA1 (shown in the figure 4) relay is electrified (the normally open contact is closed and the normally closed contact is open, as shown in the figure (4), the KA1 and the KA2 adopt interlocking, so that the situation that the KM1 and the KV1 are electrified at the same time is avoided, the automatic compensation device is caused to circulate infinitely, and the interlocking protection function is achieved;
(2) the KA1 (shown in the figure 4) normally open contact is closed, the KM1 is electrified and is sucked to control the main circuit three-phase electric conduction hydraulic pump CV (shown in the figure 3) to work and execute pressurization, and the pressurization is carried out through the one-way valve;
(3) the one-way valve (figure 3) acts on one-way conduction to ensure that the system pressure is kept when the hydraulic pump stops, meanwhile, the outlet end of the hydraulic pump and the front end of the one-way valve are provided with overflow valves S1 (figure 3) to realize overload protection, the overflow valves are opened through valve ports to ensure that the system pressure is kept constant or limit the highest pressure, and the functions of constant pressure overflow, pressure stabilization and safety protection are realized, the rear end of the one-way valve is provided with a pressure sensor PS1 (figure 3) for detecting the system pressure to realize automatic control of pressure compensation and pressure relief, the sensor adopts a Heideke (HYDAC) pressure sensor, and the sensor has the main advantages of two output ends for independently controlling low-pressure starting compensation and high-pressure automatic unloading and is suitable for the set of devices;
(4) when the sensor PS1 (shown in figure 3) detects that the pipeline pressure is higher than the rated pressure of the system, the high-pressure end of the sensor outputs a signal, the SP2 (shown in figure 4) is electrified and conducted, the KA2 relay normally-open contact is closed, the YV1 is electrified, and the system performs pressure relief to the rated pressure.
Claims (4)
1. The utility model provides a balance cylinder hydraulic pressure automatic compensating device which characterized in that: the device comprises a gravity shaft balancing device and a balancing cylinder hydraulic automatic compensation device, wherein the gravity shaft balancing device is connected with the balancing cylinder hydraulic automatic compensation device; the hydraulic automatic compensation device of the balance cylinder comprises a hydraulic pump, an overflow electromagnetic valve, a one-way valve, a pressure sensor and an electromagnetic directional valve; the rear end of the hydraulic pump is connected with an overflow electromagnetic valve, the rear end of the overflow electromagnetic valve is connected with a one-way valve, the rear end of the one-way valve is connected with an electromagnetic directional valve, the rear end of the electromagnetic directional valve is connected with a pressure sensor, the rear end of the pressure sensor is connected with a pipeline, and the pipeline is connected with a gravity balance cylinder device pipeline.
2. The hydraulic automatic compensating device of the balance cylinder according to claim 1, characterized in that: the gravity shaft balancing device is composed of two balancing cylinders, three energy accumulators and a nitrogen cylinder, the nitrogen cylinder is connected with the three parallel energy accumulators, and the three parallel energy accumulators are connected with the two parallel balancing cylinders.
3. The hydraulic automatic compensating device of the balance cylinder according to claim 1, characterized in that: the hydraulic pump is placed on the hydraulic oil tank.
4. The hydraulic automatic compensating device of the balance cylinder according to claim 1, characterized in that: the automatic hydraulic compensation device of the balance cylinder is a complete set of hydraulic control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120789190.5U CN214788313U (en) | 2021-04-17 | 2021-04-17 | Hydraulic automatic compensation device for balance cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120789190.5U CN214788313U (en) | 2021-04-17 | 2021-04-17 | Hydraulic automatic compensation device for balance cylinder |
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| Publication Number | Publication Date |
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| CN214788313U true CN214788313U (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120789190.5U Active CN214788313U (en) | 2021-04-17 | 2021-04-17 | Hydraulic automatic compensation device for balance cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412956A (en) * | 2022-01-14 | 2022-04-29 | 湖南九五精机有限责任公司 | Large-scale headstock nitrogen gas-hydraulic pressure balanced system of elimination pressure fluctuation |
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2021
- 2021-04-17 CN CN202120789190.5U patent/CN214788313U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412956A (en) * | 2022-01-14 | 2022-04-29 | 湖南九五精机有限责任公司 | Large-scale headstock nitrogen gas-hydraulic pressure balanced system of elimination pressure fluctuation |
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