CN201407156Y - Hydraulic system oil starvation protecting mechanism of concrete delivery pump - Google Patents
Hydraulic system oil starvation protecting mechanism of concrete delivery pump Download PDFInfo
- Publication number
- CN201407156Y CN201407156Y CN2009200405445U CN200920040544U CN201407156Y CN 201407156 Y CN201407156 Y CN 201407156Y CN 2009200405445 U CN2009200405445 U CN 2009200405445U CN 200920040544 U CN200920040544 U CN 200920040544U CN 201407156 Y CN201407156 Y CN 201407156Y
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- China
- Prior art keywords
- hydraulic system
- oil
- switch
- control relay
- transmission
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- Expired - Fee Related
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Abstract
The utility model relates to a hydraulic system oil starvation protecting mechanism of a concrete delivery pump, belonging to the technical field of the concrete delivery pump. An oil level switch isarranged on an oil tank, an oil quantity signal of the oil level switch is input to the input end of an MCU (micro controller unit) or a PLC (programmable logic controller), and a control relay used for controlling the work of an executing mechanism is arranged at the input end of the MCU or the PLC. When hydraulic oil drops to the lower limit position, the oil level switch is closed; when the MCUor the PLC detects a switch signal, a control relay coil at the output end is electrified; a switch of the control relay can control the electrification of an electromagnetic coil in a hydraulic loopor the on/off of a power supply of the entire mechanism, so as to stop the work of a hydraulic system. With simple structure and high practicability, the hydraulic system oil starvation protecting mechanism not only can protect personal safety, but also can effectively protect the effective service life of the entire mechanism.
Description
Technical field
The utility model relates to a kind of transmission and concrete transmission pump hydraulic system oil starvation protection mechanism, belongs to technical field of concrete pumps.
Background technique
The existing concrete transfer pump in the course of the work, because sealing part abrasion in use appears in relevant connecting pipeline, the oil circuit seepage appears, or because the overpressure in the oil hydraulic circuit, cause the oil pipe explosion, or because other various reasons cause the oil level of hydraulic oil container to descend relevant hydraulic system cisco unity malfunction, might directly cause original paper to damage, can cause personal injury when more serious.
Summary of the invention
The purpose of this utility model provides a kind of transmission and concrete transmission pump hydraulic system oil starvation protection mechanism; cause the hydraulic system cisco unity malfunction at existing concrete transfer pump hydraulic system because of above-mentioned various reasons; might directly cause original paper to damage; can cause the deficiency of personal injury when more serious; help protecting personal safety by the utility model, improve the Acceptable life of complete machine.
The purpose of this utility model is achieved through the following technical solutions; a kind of transmission and concrete transmission pump hydraulic system oil starvation protection mechanism; comprise the fuel tank in the hydraulic system; single-chip microcomputer or programmable controller PLC; it is characterized in that; the fixed oil bit switch is set on the described fuel tank; the signal of oil level switch is connected between the input end and ground of single-chip microcomputer or programmable controller PLC through lead; insert the control relay coil of pump between the output terminal of single-chip microcomputer or programmable controller PLC and ground, the contact-making switch of control relay is serially connected in the control loop of actuator.
The control loop of described actuator is the control loop of pumping, or for the starting of the complete machine electric system of concrete pump, stop control loop.
Oil level switch adopts the open type switch.
Control relay adopts is with a pair of contact-making switch general-purpose relay of often opening at least.
The utility model is by being provided with oil level switch on fuel tank; and with the oil mass signal input controller of oil level switch or the input end of programmable controller PLC; input end at controller or programmable controller PLC is provided with the work that control relay comes control executing mechanism; when hydraulic oil drops to the lower position; the oil level switch closure; when controller or programmable controller PLC detect this switching signal; the control relay coil of its output terminal gets; electromagnetic coil gets the break-make of dead electricity or complete machine power supply in the switch controls oil hydraulic circuit of control relay; cut off the work of hydraulic system; the utility model is simple in structure; practical; not only personal safety is played a protective role, and more effectively protect the Acceptable life of complete machine.
Description of drawings
Fig. 1 is the utility model circuit connection diagram.
Embodiment
Further specify the utility model in conjunction with the accompanying drawings and embodiments, the utility model comprises the fuel tank in the hydraulic system, oil level switch on the fuel tank, the signal of oil level switch is connected through lead between the input end and ground of single-chip microcomputer or programmable controller PLC, inserts the control relay coil of pump between an output terminal of single-chip microcomputer or programmable controller and ground; Present embodiment adopts programmable controller PLC, the signal of oil level switch is connected between the input end and ground of programmable controller PLC through lead, insert the control relay K1 coil of pump between the output terminal of programmable controller PLC and ground, the contact-making switch of control relay K1 is serially connected in the control loop.
As shown in Figure 1, an oil level switch S1 is installed on the oil pressure fuel tank, signal directly inserts the PLC input end, and the output terminal of PLC is control corresponding relay coil K1.When the hydraulic oil in the fuel tank drops to the lower position; oil level switch S1 closure; when PLC detects this switching signal; its output control relay coil K1 gets; the electromagnetic coil of the switch controls oil hydraulic circuit of control relay K1 gets the break-make of dead electricity or complete machine power supply; cut off the work of hydraulic system, thus the protection personal safety, the Acceptable life of raising complete machine.
Claims (4)
1, a kind of transmission and concrete transmission pump hydraulic system oil starvation protection mechanism; comprise the fuel tank in the hydraulic system; single-chip microcomputer or programmable controller PLC; it is characterized in that; the fixed oil bit switch is set on the described fuel tank; the signal of oil level switch is connected through lead between the input end and ground of single-chip microcomputer or programmable controller PLC, inserts the control relay coil of pump between the output terminal of single-chip microcomputer or programmable controller PLC and ground, and the contact-making switch of control relay is serially connected in the control loop of actuator.
2, transmission and concrete transmission pump hydraulic system oil starvation protection mechanism according to claim 1 is characterized in that the control loop of described actuator is the control loop of pumping, or for the starting of the complete machine electric system of concrete pump, stop control loop.
3, transmission and concrete transmission pump hydraulic system oil starvation protection mechanism according to claim 1 is characterized in that, oil level switch adopts the open type switch.
4, transmission and concrete transmission pump hydraulic system oil starvation protection mechanism according to claim 1 is characterized in that, control relay adopts is with a pair of contact-making switch general-purpose relay of often opening at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200405445U CN201407156Y (en) | 2009-04-29 | 2009-04-29 | Hydraulic system oil starvation protecting mechanism of concrete delivery pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200405445U CN201407156Y (en) | 2009-04-29 | 2009-04-29 | Hydraulic system oil starvation protecting mechanism of concrete delivery pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201407156Y true CN201407156Y (en) | 2010-02-17 |
Family
ID=41678089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200405445U Expired - Fee Related CN201407156Y (en) | 2009-04-29 | 2009-04-29 | Hydraulic system oil starvation protecting mechanism of concrete delivery pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201407156Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588388A (en) * | 2012-03-05 | 2012-07-18 | 中联重科股份有限公司 | Start protective device, method and engineering machinery of hydraulic system |
| CN102758767A (en) * | 2012-07-20 | 2012-10-31 | 安徽江淮汽车股份有限公司 | Oil circuit control system of saddle-shaped diesel oil tank |
-
2009
- 2009-04-29 CN CN2009200405445U patent/CN201407156Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588388A (en) * | 2012-03-05 | 2012-07-18 | 中联重科股份有限公司 | Start protective device, method and engineering machinery of hydraulic system |
| CN102588388B (en) * | 2012-03-05 | 2015-02-18 | 中联重科股份有限公司 | Start protective device, method and engineering machinery of hydraulic system |
| CN102758767A (en) * | 2012-07-20 | 2012-10-31 | 安徽江淮汽车股份有限公司 | Oil circuit control system of saddle-shaped diesel oil tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Effective date: 20110824 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 225008 YANGZHOU, JIANGSU PROVINCE TO: 201201 PUDONG NEW AREA, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110824 Address after: 201201 No. 277 Jinfeng Road, Shanghai, Pudong New Area Patentee after: Shanghai Hold Heavy Industry Co., Ltd. Address before: 225008, No. 8 West Shu Road, Weiyang District, Jiangsu, Yangzhou Patentee before: Yangzhou Liugong Construction Machinery Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201201 No. 277 Jinfeng Road, Shanghai, Pudong New Area Patentee after: SHANGHAI HONGDELI HEAVY INDUSTRY CO., LTD. Address before: 201201 No. 277 Jinfeng Road, Shanghai, Pudong New Area Patentee before: Shanghai Hold Heavy Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20180429 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |