CN202153146U - Liquid level and density alarming device of hydraulic oil box for engineering machinery - Google Patents
Liquid level and density alarming device of hydraulic oil box for engineering machinery Download PDFInfo
- Publication number
- CN202153146U CN202153146U CN201120223427XU CN201120223427U CN202153146U CN 202153146 U CN202153146 U CN 202153146U CN 201120223427X U CN201120223427X U CN 201120223427XU CN 201120223427 U CN201120223427 U CN 201120223427U CN 202153146 U CN202153146 U CN 202153146U
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- oil
- liquid level
- sensor
- oil box
- hydraulic
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Abstract
The utility model discloses a liquid level and density alarming device of a hydraulic oil box for engineering machinery, which comprises an oil box body, wherein the oil box body comprises an oil filling port, an oil returning port and an oil outlet, a support frame is fixed in the oil box body, a sensor assembly is arranged on the support frame, an induction output bundle of the sensor assembly is connected with a signal amplifying and alarming device at the external part of the oil box body. With the adoption of the liquid level and density alarming device, the sensor is arranged in the oil box for monitoring the oil level and the oil pollution degree of the hydraulic oil box in real time, when the oil level is not enough or the hydraulic oil is polluted seriously, the alarming device can prompt, so that pure hydraulic oil is added or changed, thereby improving the operation state of the hydraulic system, and ensuring the normal operation of the hydraulic system; the liquid level and density alarming device has a simple induction structure, obvious effect, is easy in installation, and selects elements with strong generality; and the structure has high reliability and the use is convenient.
Description
Technical field:
The utility model relates to a kind of engineering machinery with hydraulic reservoir liquid level and density warning device.
Background technology:
Some shovel loaders that use on the home market at present; Show the oily window indicating mode that is mostly oil ga(u)ge after its hydraulic reservoir liquid level and the oil contamination; Constantly pollute because of hydraulic oil often uses its oil, oil ga(u)ge is difficult to see clearly gradually, and the driver work and tired or ignore easily hydraulic oil liquid level and oil observation because of new hand all day simultaneously; When low and the not enough or oily pollution of hydraulic oil liquid level or aging or when causing damaging Hydraulic Elements, make its hydraulic system cisco unity malfunction; The utility model has solved this problem exactly.
The utility model content:
The purpose of the utility model is alarm to be arranged when being polluted for the hydraulic reservoir of realizing shovel loader is not enough at hydraulic oil, liquid level descends or hydraulic oil is aging, avoids shovel loader the undesired and phenomenon of can not working of hydraulic system when work, to occur.
The technological solution of the utility model is following:
A kind of engineering machinery is with hydraulic reservoir liquid level and density warning device; Comprise oil box; Described oil box has oil filler, oil return opening and oil-out; Said oil box internal fixation has bracing frame, and the inductor assembly is installed on the described bracing frame, and the induction bundle of outputs of this inductor assembly signal outside with being positioned at oil box amplifies and alarm is connected.
Described a kind of engineering machinery is with hydraulic reservoir liquid level and density warning device, and the inductor assembly mainly constitutes by being fixed on a sensor, b sensor and c sensor on the bracing frame, that arrange successively from the bottom up.
Described a kind of engineering machinery is with hydraulic reservoir liquid level and density warning device, and described c sensor exposes the hydraulic oil bit line in the said oil box.
Described a kind of engineering machinery is fixed with the liquid level oil ga(u)ge with hydraulic reservoir liquid level and density warning device on the sidewall of said oil box.
Described a kind of engineering machinery is with hydraulic reservoir liquid level and density warning device, and described a sensor, b sensor and c sensor are pressure reduction electric capacity or piezoceramic transducer.The utility model beneficial effect is:
1, the existing micropressure sensor principle of utilization; A, b, three pressure reduction electric capacity of c or piezoceramic transducer are combined in following three positions (a and b are in fluid, and c exposes liquid level line in air) in the going up in the device, export the different pressures of 3 positions; Amplify again and the different combinations calculation process; Calculate corresponding density value through a and b, a and c calculate corresponding level value, alarm work when output level value or density value are increased to alarming value;
2, this difunctional inductor is applied to the warning of shovel loader hydraulic reservoir, play security warning, guarantee the shovel loader operate as normal; This apparatus structure is simple, and relative cost is low, and fuel tank internal induction device volume is little, and is easy for installation.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is done further explanation:
Fig. 1 is the structural representation of the utility model;
Fig. 2 is this novel vertical view.
Embodiment:
Embodiment; See accompanying drawing 1,2, a kind of engineering machinery comprises oil box 10 with hydraulic reservoir liquid level and density warning device; Described oil box has oil filler 3, oil return opening 4 and oil-out 13; Said oil box internal fixation has bracing frame 6, and inductor assembly 5 is installed on the described bracing frame, and the induction bundle of outputs 1 of this inductor assembly signal outside with being positioned at oil box amplifies and alarm 2 is connected.
Described c sensor exposes the hydraulic oil bit line 7 in the said oil box.
Be fixed with liquid level oil ga(u)ge 12 on the sidewall of said oil box.
Described a sensor, b sensor and c sensor are pressure reduction electric capacity or piezoceramic transducer.
Principle of work: the inductor assembly 5 usefulness bolts that the utility model will contain three little pressure-type inductive head a, b and c are packed on the bracing frame 6 in the hydraulic reservoir 10, and its induction bundle of outputs 1 is connected with signal amplification and alarm 2; By specification requires to add normal clean hydraulic oil from hydraulic reservoir oil filler 3, makes hydraulic oil bit line 7 arrive the scale position of oil ga(u)ge window regulation, and at this moment the hydraulic oil bit line is on the top of b sensor; During operate as normal; A, b sensor sense under the fuel tank simultaneously, in the fluid pressure at two places; What the c sensor was sensed in the fuel tank upper air is air pressure; The induced signal of a, b, c sensor is transferred to signal amplifier respectively, and amplifier signal obtains magnitude of voltage separately after amplifying separately in proportion; According to this hydraulic oil autologous density value with carry out temperature compensation, just a, b sensor amplified signal are handled the magnitude of voltage that obtains corresponding density to use elementary errors press liquid density sensor principle again; A, c sensor amplified signal are handled the magnitude of voltage that obtains corresponding liquid level; Whether these two magnitudes of voltage are can not drive alarm to work.But its situation is following in the time hydraulic oil being changed cause hydraulic work system unusual owing to hydraulic system use for a long time in the work:
1, since hydraulic system in the long-term work process, hydraulic oil is polluted, its density will increase gradually; Density value will raise, and the pressure difference signal of a, the output of c sensor also will increase, after signal is handled through amplifier; When reaching given alarming value, it will drive alarm work, the alarm first kind of auditory tone cues that pipe out; This is to shut down to change hydraulic oil, automatically terminates warning after changing oil, operate as normal;
2, make hydraulic oil reduce for a certain reason, the oil level line descends; When the oil level line drops to certain value, the pressure difference signal of a, the output of b sensor also will increase, when the liquid level output valve is increased to given alarming value; Also will drive alarm work; The alarm second kind of auditory tone cues that pipe out automatically terminates warning after adding hydraulic oil, but operate as normal.
The above is merely a kind of embodiment of the utility model; It or not whole or unique embodiment; The conversion of any equivalence that those of ordinary skills take the utility model technical scheme through reading the utility model instructions, the claim that is the utility model contains.
Claims (5)
1. an engineering machinery is with hydraulic reservoir liquid level and density warning device; Comprise oil box (10); Described oil box has oil filler (3), oil return opening (4) and oil-out (13); It is characterized in that: said oil box internal fixation has bracing frame (6), and inductor assembly (5) is installed on the described bracing frame, and the induction bundle of outputs (1) of this inductor assembly signal outside with being positioned at oil box amplifies and alarm (2) is connected.
2. a kind of engineering machinery according to claim 1 is characterized in that with hydraulic reservoir liquid level and density warning device: inductor assembly (5) mainly constitutes by being fixed on a sensor (9), b sensor (8) and c sensor (11) on the bracing frame, that arrange successively from the bottom up.
3. a kind of engineering machinery according to claim 2 is characterized in that with hydraulic reservoir liquid level and density warning device: described c sensor exposes the hydraulic oil bit line (7) in the said oil box.
4. a kind of engineering machinery according to claim 1 is characterized in that with hydraulic reservoir liquid level and density warning device: be fixed with liquid level oil ga(u)ge (12) on the sidewall of said oil box.
5. a kind of engineering machinery according to claim 2 is characterized in that with hydraulic reservoir liquid level and density warning device: described a sensor, b sensor and c sensor are pressure reduction electric capacity or piezoceramic transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120223427XU CN202153146U (en) | 2011-06-28 | 2011-06-28 | Liquid level and density alarming device of hydraulic oil box for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120223427XU CN202153146U (en) | 2011-06-28 | 2011-06-28 | Liquid level and density alarming device of hydraulic oil box for engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202153146U true CN202153146U (en) | 2012-02-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120223427XU Expired - Fee Related CN202153146U (en) | 2011-06-28 | 2011-06-28 | Liquid level and density alarming device of hydraulic oil box for engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202153146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748236A (en) * | 2019-10-31 | 2021-05-04 | 中国石油化工股份有限公司 | Method and device for rapidly detecting stability of heavy marine concocted fuel oil |
-
2011
- 2011-06-28 CN CN201120223427XU patent/CN202153146U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748236A (en) * | 2019-10-31 | 2021-05-04 | 中国石油化工股份有限公司 | Method and device for rapidly detecting stability of heavy marine concocted fuel oil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120229 Termination date: 20140628 |
|
| EXPY | Termination of patent right or utility model |