CN203962559U - Oil hydraulic cylinder detection device and hydraulic system - Google Patents
Oil hydraulic cylinder detection device and hydraulic system Download PDFInfo
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- CN203962559U CN203962559U CN201420381132.9U CN201420381132U CN203962559U CN 203962559 U CN203962559 U CN 203962559U CN 201420381132 U CN201420381132 U CN 201420381132U CN 203962559 U CN203962559 U CN 203962559U
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- hydraulic cylinder
- oil hydraulic
- detection device
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- cylinder detection
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Abstract
The utility model provides a kind of oil hydraulic cylinder detection device and hydraulic system, and wherein, described oil hydraulic cylinder detection device comprises: two blocks of testing electrode plates that be arranged in parallel, are fixed with magnetic block on every block of testing electrode plate; Lash adjusting device, described lash adjusting device connects described two blocks of testing electrode plates; Alarm, described alarm is connected with described two blocks of testing electrode plates.In the oil hydraulic cylinder detection device providing at the utility model, when there is scuffing of cylinder bore fault in oil hydraulic cylinder, by magnetic block, adsorb iron filings, thereby change the current value between two blocks of testing electrode plates that be arranged in parallel, and then alarm is given the alarm, just can make thus the scuffing of cylinder bore fault of oil hydraulic cylinder be found in time.
Description
Technical field
The utility model relates to detection facility technical field, particularly a kind of oil hydraulic cylinder detection device and hydraulic system.
Background technique
Acting as by changing pressure of hydraulic system increases active force.A complete hydraulic system is comprised of five parts, i.e. dynamical element, executive component, control unit, auxiliary element (annex) and hydraulic oil.Common, dynamical element comprises oil hydraulic pump; Executive component comprises oil hydraulic cylinder; Control unit comprises hydrovalve; Auxiliary element comprises fuel tank, oil pipe etc.Wherein, oil hydraulic cylinder generally includes cylinder barrel and is arranged at the piston rod in cylinder barrel, and the to-and-fro motion by described piston rod changes hydraulic energy into mechanical energy.
At present, the oil hydraulic cylinder in hydraulic system in operation process, due to unbalance stress or moment overload cause piston rod crooked; And leak because seal wear causes in oil hydraulic cylinder, Sealing is washed out under the impact of high pressure oil, makes piston rod bear lateral force and bending, and above-mentioned situation all can cause oil hydraulic cylinder scuffing of cylinder bore.After oil hydraulic cylinder scuffing of cylinder bore, will produce iron filings, these iron filings, through the circulation of oil circuit, can repeatedly enter in the gap between piston rod and cylinder barrel, and iron filings embed and wherein can increase the weight of the wearing and tearing of oil hydraulic cylinder scuffing of cylinder bore, and the iron filings that grind are got more and more.Thus, not only make oil hydraulic cylinder heavy wear, and these iron filings are along with the flowing of hydraulic oil, and can enter in other elements of hydraulic system, cause element fault.Such as making hydrovalve wearing and tearing, cause control accuracy to decline; Make running gear wearing and tearing in oil hydraulic pump, cause oil pressure reduction, oil temperature to raise, and the short circuit of hydraulic pump motor rotor coil etc.
Therefore, need find in time oil hydraulic cylinder scuffing of cylinder bore fault and remove iron filings, at present because the piston rod of oil hydraulic cylinder and Sealing etc. are positioned at cylinder barrel, cannot find in time the failure condition of these elements, although can find fault by checking oil temperature, oil pressure and oil hydraulic cylinder action situation, but when there is the abnormal and oil hydraulic cylinder remarkable action of oil temperature, often the parts damage situations in hydraulic system is serious, need strip inspection, not only increase maintenance difficulty and maintenance cost, also affected production.
Model utility content
The purpose of this utility model is to provide a kind of oil hydraulic cylinder detection device and hydraulic system, to solve the problem that cannot find in time oil hydraulic cylinder scuffing of cylinder bore fault in prior art.
For solving the problems of the technologies described above, the utility model provides a kind of oil hydraulic cylinder detection device, and described oil hydraulic cylinder detection device comprises:
Two blocks of testing electrode plates that be arranged in parallel, are fixed with magnetic block on every block of testing electrode plate;
Lash adjusting device, described lash adjusting device connects described two blocks of testing electrode plates; And
Alarm, described alarm is connected with described two blocks of testing electrode plates.
Optionally, in described oil hydraulic cylinder detection device, described lash adjusting device comprises two support blocks and the adjustment piece that connects described two support blocks, and described two support blocks are fixed respectively two blocks of testing electrode plates.
Optionally, in described oil hydraulic cylinder detection device, described adjustment piece comprises adjusting nut and the adjustment bolt being connected with described adjusting nut.
Optionally, in described oil hydraulic cylinder detection device, described adjustment piece also comprises spring, and described spring is connected with described adjusting nut and adjustment bolt.
Optionally, in described oil hydraulic cylinder detection device, described two support blocks are dielectric support block.
Optionally, in described oil hydraulic cylinder detection device, the quantity of described lash adjusting device is one or more.
Optionally, in described oil hydraulic cylinder detection device, also comprise a sealing cover, on described sealing cover, be provided with jack, described two blocks of testing electrode plates are through the jack on described sealing cover.
Optionally, in described oil hydraulic cylinder detection device, also comprise a fixed cover, described fixed cover covers described jack, and described sealing cover is fixed on described two blocks of testing electrode plates.
Optionally, in described oil hydraulic cylinder detection device, described alarm is drawn wire by electrode and is connected with described two blocks of testing electrode plates.
Optionally, in described oil hydraulic cylinder detection device, described alarm comprises:
Current-to-voltage converting circuit;
The differential amplifier circuit being connected with described current-to-voltage converting circuit;
The A/D change-over circuit being connected with described differential amplifier circuit;
The single-chip microcomputer being connected with described A/D change-over circuit; And
The Display and Alarm Circuit being connected with described single-chip microcomputer.
The utility model also provides a kind of hydraulic system, and described hydraulic system comprises oil hydraulic cylinder, the hydraulic oil pipeline being connected with described oil hydraulic cylinder and oil hydraulic cylinder detection device as above.
Optionally, in described hydraulic system, described oil hydraulic cylinder detection device is placed in described hydraulic oil pipeline.
Optionally, in described hydraulic system, also comprise fuel tank, described oil hydraulic cylinder detection device is placed in described hydraulic oil pipeline or described fuel tank.
In the oil hydraulic cylinder detection device and hydraulic system providing at the utility model, when there is scuffing of cylinder bore fault in oil hydraulic cylinder, by magnetic block, adsorb iron filings, thereby change the current value between two blocks of testing electrode plates that be arranged in parallel, and then alarm is given the alarm, just can make thus the scuffing of cylinder bore fault of oil hydraulic cylinder be found in time.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment's oil hydraulic cylinder detection device;
Fig. 2 is the schematic top plan view of the utility model embodiment's oil hydraulic cylinder detection device;
Fig. 3 is AA ' the section enlarged diagram of the utility model embodiment's oil hydraulic cylinder detection device.
Embodiment
Below in conjunction with the drawings and specific embodiments, oil hydraulic cylinder detection device and the hydraulic system that the utility model proposes are described in further detail.According to the following describes and claims, advantage of the present utility model and feature will be clearer.It should be noted that, accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, aid illustration the utility model embodiment's object lucidly.
Please refer to Fig. 1～3, wherein, Fig. 1 is the structural representation of the utility model embodiment's oil hydraulic cylinder detection device; Fig. 2 is the schematic top plan view of the utility model embodiment's oil hydraulic cylinder detection device; Fig. 3 is AA ' the section enlarged diagram of the utility model embodiment's oil hydraulic cylinder detection device.As shown in Figure 1, described oil hydraulic cylinder detection device 1 comprises:
Two blocks of testing electrode plates 10 that be arranged in parallel, are fixed with magnetic block 11 on every block of testing electrode plate 10;
Lash adjusting device 12, described lash adjusting device 12 connects described two blocks of testing electrode plates 10;
Alarm 13, described alarm 13 is connected with described two blocks of testing electrode plates 10.
When 1 pair of oil hydraulic cylinder of the described oil hydraulic cylinder detection device of concrete use carries out scuffing of cylinder bore while detecting, described two blocks of testing electrode plates 10 can be placed in to oil hydraulic cylinder (hydraulic oil); Or, also described two blocks of testing electrode plates 10 can be placed in to fuel tank (hydraulic oil).Because the hydraulic oil in oil hydraulic cylinder and the hydraulic oil in fuel tank can be through the circulations of oil circuit and intercommunication/exchange, therefore, described two blocks of testing electrode plates 10 are directly placed in to detected oil hydraulic cylinder (hydraulic oil), are still placed in fuel tank (hydraulic oil), its result is basically identical.
After described two blocks of testing electrode plates 10 are placed in to oil hydraulic cylinder (hydraulic oil) or fuel tank (hydraulic oil), just can realize and detecting the scuffing of cylinder bore of oil hydraulic cylinder by described oil hydraulic cylinder detection device 1.Concrete, when scuffing of cylinder bore fault appears in oil hydraulic cylinder, while producing iron filings, the iron filings that absorption produced by magnetic block 11, thereby the current value between two blocks of testing electrode plates 10 that be arranged in parallel will change, and then will make alarm 13 give the alarm, and just can access thus the information of oil hydraulic cylinder generation scuffing of cylinder bore fault, make the scuffing of cylinder bore fault of oil hydraulic cylinder be found in time.
Wherein, utilize the principle of the electric current in the testing electrode plate detection hydraulic oil be arrangeding in parallel as follows:
When electric field E not bery strong (much smaller than breakdown electric field), between two blocks of testing electrode plates that be arranged in parallel (following abbreviation two parallel-plates), carrier conductive current is obeyed differential Ohm's law, be full of between two parallel-plate electrodes of oily medium (hydraulic oil), vertical electric field E gets micro-rectangular area ds, and on ds face, current density j is:
j＝dI/ds＝nqv＝nquE
Wherein, n is carrier number order in per unit volume; Q is the electric weight of carrier; V is that carrier is along the mean velocity of direction of an electric field drift; U is the mobility (=v/E) of carrier.
If contaminated oil has m kind carrier in (be equivalent in the embodiment of the present application contain iron filings hydraulic oil), current density j is:
J=∑ n
iq
iu
ie
i, (wherein, i value be 1 to m)
Can find out, the electrification current density j of contaminated oil medium depends on electric field E, carrier kind, concentration and mobility u.And clean hydraulic oil liquid is nonconducting, its electric current can be ignored.
In the embodiment of the present application, because scuffing of cylinder bore fault appears in oil hydraulic cylinder, produce iron filings, the iron filings that magnetic block 11 absorption produce, thus make two blocks of testing electrode plates 10 that be arranged in parallel electric current be detected; The electric current detecting by two blocks of testing electrode plates 10 that be arranged in parallel, can be so that alarm 13 gives the alarm; And the alarm of sending by alarm 13 just can be learnt in oil hydraulic cylinder to have produced iron filings, there is scuffing of cylinder bore fault.
In the embodiment of the present application, described lash adjusting device 12 comprises two support blocks 120 and the adjustment piece that connects described two support blocks 120, and described two support blocks 120 are fixed respectively two blocks of testing electrode plates 10.Further, described adjustment piece comprises adjusting nut 121 and the adjustment bolt 122 being connected with described adjusting nut 121, and described adjustment piece also comprises spring 123, and described spring 123 is connected with described adjusting nut 121 and adjustment bolt 122; Described two support blocks 120 are dielectric support block.Can be specifically with reference to shown in figure 3.
Concrete, (a support block 120 is fixed a testing electrode plate 10 by two support blocks 120, to fix respectively two blocks of testing electrode plates 10, another piece support block 120 is fixed a testing electrode plate 10, at this, by fastening, realize above-mentioned fixing) afterwards, can adjust the distance between two support blocks 120 by adjusting nut 121 and the degree of tightness of adjusting between bolt 122, and then adjust the distance between two blocks of testing electrode plates 10.
Further, adjustment piece also can comprise spring 123, and described spring 123 is arranged between two support blocks 120, by adjusting nut 121 and adjustment bolt 122, makes spring 123 fixing with support block 120.By adjusting nut 121 with adjust the degree of tightness between bolt 122, the pressure of spring 123 described in capable of regulating, thus adjust the distance between two support blocks 120, and then adjust the distance between two blocks of testing electrode plates 10.Comparatively speaking, after increasing spring 123, the front a kind of mode of adjustable distance between two support blocks 120 (i.e. adjustable distance between two blocks of testing electrode plates 10) is larger.
In the embodiment of the present application, the quantity of described lash adjusting device 12 is one or more.Preferably, the quantity of described lash adjusting device 12 is a plurality of, and a plurality of lash adjusting devices 12 are evenly distributed between two blocks of testing electrode plates 10, to connect described two blocks of testing electrode plates 10.Thus, can make the distance between each position on two blocks of testing electrode plates 10 all equate, guarantee two parallel positions between testing electrode plate 10.
In the embodiment of the present application, described oil hydraulic cylinder detection device 1 also comprises sealing cover 14, is provided with jack (not shown in Fig. 1 to Fig. 3) on described sealing cover 14, and described two blocks of testing electrode plates 10 are through the jack on described sealing cover 14.Further, also comprise fixed cover 15, described fixed cover 15 covers described jack, and described sealing cover 14 is fixed on described two blocks of testing electrode plates 10.By sealing cover 14 being set on described two blocks of testing electrode plates 10, described oil hydraulic cylinder detection device 1 can be applied to the occasion that some need to seal preferably.For example, when described oil hydraulic cylinder detection device 1 is placed in oil hydraulic cylinder and detects, comparatively speaking, comprise the using effect better (being more conducive to the sealing of oil hydraulic cylinder) of the oil hydraulic cylinder detection device 1 of sealing cover 15; And described oil hydraulic cylinder detection device 1 is when being placed in fuel tank and detecting, comparatively speaking, do not comprise the using effect better (convenient) of the oil hydraulic cylinder detection device 1 of sealing cover 15.
Preferably, the quantity of the jack on described sealing cover 14 and size and the quantity of described testing electrode plate 10 and size identical (being that quantity is two), be beneficial to the sealing effect of described sealing cover 14 thus more.And cover described jack by fixed cover 15, described sealing cover 14 is fixed on described two blocks of testing electrode plates 10, can make the sealing effect of sealing cover 14 better, also make to be connected more firmly between sealing cover 14 and testing electrode plate 10 simultaneously, make oil hydraulic cylinder detection device 1 more solid and reliable.
Further, described alarm 13 is drawn wire 16 by electrode and is connected with described two blocks of testing electrode plates 10.By electrode, draw wire 16 and connect alarm 13 and two blocks of testing electrode plates 10, can make between alarm 13 and two blocks of testing electrode plates 10 be connected more flexible, the change that space length between alarm 13 and two blocks of testing electrode plates 10 can be more random.
In the embodiment of the present application, described alarm 13 can adopt the existing device that any one is reminded or warn with forms such as sound, light, air pressure.Concrete, described alarm 13 can comprise current-to-voltage converting circuit, the differential amplifier circuit being connected with described current-to-voltage converting circuit, the A/D change-over circuit being connected with described differential amplifier circuit, the single-chip microcomputer being connected with described A/D change-over circuit, and the Display and Alarm Circuit being connected with described single-chip microcomputer.
Accordingly, the present embodiment also provides a kind of hydraulic system, and described hydraulic system comprises oil hydraulic cylinder, the hydraulic oil pipeline being connected with described oil hydraulic cylinder and oil hydraulic cylinder detection device as above, and described oil hydraulic cylinder detection device is placed in described hydraulic oil pipeline.Further, described hydraulic system also can comprise fuel tank, and now, described oil hydraulic cylinder detection device both can be placed in described hydraulic oil pipeline, also can be placed in described fuel tank.
As fully visible, in the oil hydraulic cylinder detection device and hydraulic system providing in the utility model embodiment, when there is scuffing of cylinder bore fault in oil hydraulic cylinder, by magnetic block, adsorb iron filings, thereby change the current value between two blocks of testing electrode plates that be arranged in parallel, and then alarm is given the alarm, just can make thus the scuffing of cylinder bore fault of oil hydraulic cylinder be found in time.
Foregoing description is only the description to the utility model preferred embodiment; the not any restriction to the utility model scope; any change, modification that the those of ordinary skill in the utility model field is done according to above-mentioned disclosure, all belong to the protection domain of claims.
Claims (13)
1. an oil hydraulic cylinder detection device, is characterized in that, comprising:
Two blocks of testing electrode plates that be arranged in parallel, are fixed with magnetic block on every block of testing electrode plate;
Lash adjusting device, described lash adjusting device connects described two blocks of testing electrode plates; And
Alarm, described alarm is connected with described two blocks of testing electrode plates.
2. oil hydraulic cylinder detection device as claimed in claim 1, is characterized in that, described lash adjusting device comprises two support blocks and the adjustment piece that connects described two support blocks, and described two support blocks are fixed respectively two blocks of testing electrode plates.
3. oil hydraulic cylinder detection device as claimed in claim 2, is characterized in that, described adjustment piece comprises adjusting nut and the adjustment bolt being connected with described adjusting nut.
4. oil hydraulic cylinder detection device as claimed in claim 3, is characterized in that, described adjustment piece also comprises spring, and described spring is connected with described adjusting nut and adjustment bolt.
5. oil hydraulic cylinder detection device as claimed in claim 2, is characterized in that, described two support blocks are dielectric support block.
6. oil hydraulic cylinder detection device as claimed in claim 1, is characterized in that, the quantity of described lash adjusting device is one or more.
7. the oil hydraulic cylinder detection device as described in any one in claim 1～6, is characterized in that, also comprises a sealing cover, on described sealing cover, is provided with jack, and described two blocks of testing electrode plates are through the jack on described sealing cover.
8. oil hydraulic cylinder detection device as claimed in claim 7, is characterized in that, also comprises a fixed cover, and described fixed cover covers described jack, and described sealing cover is fixed on described two blocks of testing electrode plates.
9. the oil hydraulic cylinder detection device as described in any one in claim 1～6, is characterized in that, described alarm is drawn wire by electrode and is connected with described two blocks of testing electrode plates.
10. oil hydraulic cylinder detection device as claimed in claim 9, is characterized in that, described alarm comprises:
Current-to-voltage converting circuit;
The differential amplifier circuit being connected with described current-to-voltage converting circuit;
The A/D change-over circuit being connected with described differential amplifier circuit;
The single-chip microcomputer being connected with described A/D change-over circuit; And
The Display and Alarm Circuit being connected with described single-chip microcomputer.
11. 1 kinds of hydraulic systems, comprise oil hydraulic cylinder, and the hydraulic oil pipeline with described oil hydraulic cylinder is connected, is characterized in that, also comprise the oil hydraulic cylinder detection device as described in any one in claim 1～10.
12. hydraulic systems as claimed in claim 11, is characterized in that, described oil hydraulic cylinder detection device is placed in described hydraulic oil pipeline.
13. hydraulic systems as claimed in claim 11, is characterized in that, also comprise fuel tank, and described oil hydraulic cylinder detection device is placed in described hydraulic oil pipeline or described fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420381132.9U CN203962559U (en) | 2014-07-10 | 2014-07-10 | Oil hydraulic cylinder detection device and hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420381132.9U CN203962559U (en) | 2014-07-10 | 2014-07-10 | Oil hydraulic cylinder detection device and hydraulic system |
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| Publication Number | Publication Date |
|---|---|
| CN203962559U true CN203962559U (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420381132.9U Expired - Fee Related CN203962559U (en) | 2014-07-10 | 2014-07-10 | Oil hydraulic cylinder detection device and hydraulic system |
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| CN (1) | CN203962559U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317784A (en) * | 2015-10-27 | 2016-02-10 | 山东钢铁股份有限公司 | On-line monitoring device for iron powder in oil of hydraulic system and using method |
| CN113670984A (en) * | 2021-07-07 | 2021-11-19 | 中联重科股份有限公司 | Method and device for detecting abrasive dust, method and device for judging abrasive dust, and engineering machinery |
| CN114526277A (en) * | 2022-04-24 | 2022-05-24 | 徐州强宏液压科技有限公司 | Hydraulic cylinder capable of detecting liquid leakage |
-
2014
- 2014-07-10 CN CN201420381132.9U patent/CN203962559U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317784A (en) * | 2015-10-27 | 2016-02-10 | 山东钢铁股份有限公司 | On-line monitoring device for iron powder in oil of hydraulic system and using method |
| CN113670984A (en) * | 2021-07-07 | 2021-11-19 | 中联重科股份有限公司 | Method and device for detecting abrasive dust, method and device for judging abrasive dust, and engineering machinery |
| CN113670984B (en) * | 2021-07-07 | 2023-12-19 | 中联重科股份有限公司 | Detection method and device for detecting abrasive dust, judgment method and device and engineering machinery |
| CN114526277A (en) * | 2022-04-24 | 2022-05-24 | 徐州强宏液压科技有限公司 | Hydraulic cylinder capable of detecting liquid leakage |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20190710 |
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| CF01 | Termination of patent right due to non-payment of annual fee |