CN209925343U - Digital hydraulic cylinder detection device - Google Patents
Digital hydraulic cylinder detection device Download PDFInfo
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- CN209925343U CN209925343U CN201920711731.5U CN201920711731U CN209925343U CN 209925343 U CN209925343 U CN 209925343U CN 201920711731 U CN201920711731 U CN 201920711731U CN 209925343 U CN209925343 U CN 209925343U
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Abstract
The utility model provides a digital pneumatic cylinder detection device. The hydraulic loading device comprises a digital controller, a tested cylinder hydraulic circuit and a loading cylinder loading circuit, wherein the tested cylinder hydraulic circuit and the loading cylinder loading circuit are connected with the digital controller; an oil cylinder piston rod in the tested cylinder hydraulic circuit is connected with an oil cylinder piston rod in the loading cylinder loading circuit through a connecting tool, and a force sensor and a grating ruler displacement sensor are arranged on the connecting tool. The hydraulic circuit of the tested cylinder comprises the tested cylinder, an electro-hydraulic reversing valve, a proportional flow cartridge valve and an oil pump A; the oil outlet of the oil pump A is communicated with the oil inlet of the proportional flow cartridge valve, the oil outlet of the proportional flow cartridge valve is communicated with the oil inlet of the electro-hydraulic reversing valve, and two oil through ports on the electro-hydraulic reversing valve are respectively communicated with corresponding oil through ports on the tested cylinder. The utility model discloses in, adopted grating chi displacement sensor to digital pneumatic cylinder stroke detection, adopted pressure sensor to detect the oil pressure, measurement accuracy is high. The ultrahigh pressure loop is designed to meet the requirement of high pressure resistance of the digital hydraulic cylinder.
Description
Technical Field
The utility model relates to a hydraulic pressure test technical field, concretely relates to digit pneumatic cylinder detection device.
Background
The position, the speed and the direction of the piston movement of the digital hydraulic cylinder are controlled by electric pulse signals, the performance of the digital hydraulic cylinder needs to be detected in the production of the digital cylinder, and the existing national standard is only GB/T24946 and 2010 'digital hydraulic cylinder for ships', which is only specific to the digital hydraulic cylinder for ships and has a narrow application range and a standard test method for the digital hydraulic cylinder in other application fields without the basis. The existing detection device has the defects of low detection precision, single function, high production cost and the like.
In summary, there is a need for a digital hydraulic cylinder detecting device to solve the problems in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a digital pneumatic cylinder detection device to solve the digital pneumatic cylinder and start the detection problem of performance such as pressure, resistance to pressure, stroke detection at minimum.
In order to achieve the above object, the utility model provides a digital hydraulic cylinder detection device, which comprises a digital controller, a tested cylinder hydraulic circuit and a loading cylinder loading circuit, wherein the tested cylinder hydraulic circuit and the loading cylinder loading circuit are connected with the digital controller; an oil cylinder piston rod in the tested cylinder hydraulic circuit is connected with an oil cylinder piston rod in the loading cylinder loading circuit through a connecting tool, and a force sensor and a grating ruler displacement sensor are arranged on the connecting tool.
The hydraulic circuit of the tested cylinder comprises the tested cylinder, an electro-hydraulic reversing valve, a proportional flow cartridge valve and an oil pump A; an oil outlet of the oil pump A is communicated with an oil inlet of the proportional flow cartridge valve, an oil outlet of the proportional flow cartridge valve is communicated with an oil inlet of the electro-hydraulic reversing valve, two oil through ports on the electro-hydraulic reversing valve are respectively communicated with corresponding oil through ports on a tested cylinder, and oil return ports of the electro-hydraulic reversing valve and the proportional flow cartridge valve are communicated with an oil tank; and two oil through ports of the tested cylinder are respectively provided with a pressure sensor A and a pressure sensor B which are used for detecting the pressure of an oil way.
Preferably, a cartridge type pressure reducing valve for adjusting pressure and a pressure sensor C for detecting pressure are arranged between an oil outlet of the oil pump A and an oil inlet of the proportional flow cartridge valve.
Preferably, a proportional overflow valve A for adjusting the flow and a temperature sensor for detecting the temperature are arranged between the oil outlet of the proportional flow cartridge valve and the oil inlet of the electro-hydraulic reversing valve.
Preferably, the hydraulic circuit of the tested cylinder further comprises an electromagnetic directional valve A and an electromagnetic ball valve A; an oil outlet of the proportional flow cartridge valve is communicated with an oil inlet of the electromagnetic ball valve A; the oil outlet of the electromagnetic ball valve A is communicated with the oil inlet of the electromagnetic reversing valve A, two oil through ports on the electromagnetic reversing valve A are respectively communicated with corresponding oil through ports on a tested cylinder, and oil return ports of the electromagnetic reversing valve A and the electromagnetic ball valve A are communicated with an oil tank.
Preferably, a proportional overflow valve B for adjusting flow is arranged between an oil outlet of the electromagnetic ball valve A and an oil inlet of the electromagnetic directional valve A; and an electromagnetic ball valve B is arranged between the electromagnetic directional valve A and an oil through hole of the tested cylinder, and a pressure sensor D is arranged on the electromagnetic ball valve B.
Preferably, a pressure sensor E for detecting pressure is arranged between the oil outlet of the proportional flow cartridge valve and the oil inlet of the electromagnetic ball valve A.
Preferably, a low-pressure ball valve is arranged between the electro-hydraulic reversing valve or the electromagnetic reversing valve A and the oil tank; a high-pressure ball valve is arranged between the oil outlet A of the oil pump and the cartridge type pressure reducing valve.
Preferably, the hydraulic circuit of the cylinder to be tested further comprises an electromagnetic ball valve C, an electromagnetic ball valve D and an oil pump C; the oil outlet of the oil pump C is respectively communicated with the oil inlets of the electromagnetic ball valve C and the electromagnetic ball valve D, and the oil outlets of the electromagnetic ball valve C and the electromagnetic ball valve D are respectively communicated with two oil through ports of the tested cylinder; an ultrahigh pressure ball valve and a pressure sensor F are also arranged between the oil outlet of the oil pump C and the electromagnetic ball valve D.
Preferably, the loading cylinder loading circuit comprises a loading cylinder, a proportional overflow valve C, a cartridge valve assembly and an oil pump B; the cartridge valve assembly comprises a two-way cartridge valve A and a two-way cartridge valve B which are respectively communicated with an oil outlet of an oil pump B, and a two-way cartridge valve C and a two-way cartridge valve D which are respectively correspondingly connected with two oil through ports of the loading cylinder and used for oil discharge; and the inlet of the proportional overflow valve C is respectively communicated with the outlets of the two-way cartridge valve C and the two-way cartridge valve D, and the outlet of the proportional overflow valve C is connected with the oil tank.
Preferably, the charging cylinder charging circuit further comprises a solenoid directional valve B; two oil through ports of the electromagnetic directional valve B are communicated with corresponding oil through ports on the loading cylinder; and two oil through ports of the loading cylinder are respectively provided with a pressure sensor G and a pressure sensor H which are used for detecting the pressure of an oil way.
Use the technical scheme of the utility model, following beneficial effect has:
(1) the utility model discloses in, adopted grating chi displacement sensor to digital pneumatic cylinder stroke detection, measurement accuracy is high, and the precision grade can reach 0.001 mm.
(2) The utility model discloses in, constitute minimum starting pressure detection return circuit by electricity liquid switching-over valve, proportional flow cartridge valve, cartridge formula relief pressure valve, electromagnetic ball valve and proportion overflow valve etc. adopted special high accuracy pressure sensor in this return circuit, carry out the accurate detection, the oil pressure on the measurement return circuit that can be accurate measures accurately, and the precision is high.
(3) The utility model discloses in, can play the level pressure overflow through setting up the proportion overflow valve, steady voltage, system off-load and safety protection effect. Through setting up cartridge formula relief pressure valve, be convenient for adjust oil circuit pressure, ensure the safety of oil circuit.
(4) The utility model discloses in, tested jar hydraulic circuit has designed the superhigh pressure return circuit of constituteing by electromagnetic ball valve and superhigh pressure ball valve, and highest withstand voltage can reach 60MPa, can satisfy the high requirement of most digital pneumatic cylinder withstand voltage.
(5) The utility model discloses in, loading cylinder loading return circuit has adopted four two-way cartridge valves to constitute bridge type return circuit and a proportion overflow valve, and its overall structure science, installation and pressure regulating are convenient, and the cost is lower.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of a digital hydraulic cylinder detection device;
the device comprises a digital controller 1, a force sensor 2, a force sensor 3, a grating ruler displacement sensor 4, a tested cylinder 5, an electro-hydraulic directional valve 6, a proportional flow cartridge valve 7, oil pumps A and 8, pressure sensors A and 9, pressure sensors B and 10, a cartridge type pressure reducing valve 11, pressure sensors C and 12, proportional relief valves A and 13, a temperature sensor 14, electromagnetic directional valves A and 15, electromagnetic ball valves A and 16, proportional relief valves B and 17, electromagnetic ball valves B and 18, pressure sensors D and 19, pressure sensors E and 20, low-pressure ball valves 21, high-pressure ball valves 22, electromagnetic ball valves C and 23, electromagnetic ball valves D and 24, oil pumps C and 25, ultrahigh-pressure ball valves 26, pressure sensors F and 27, a loading cylinder 28, a proportional relief valve C and 29, oil pumps B and 30, two-way cartridge valves A and 31, two-way valve B, 32, a two-way ball valve C and 13, The two-way cartridge valves C and 33, the two-way cartridge valves D and 34, the electromagnetic directional valves B and 35, the pressure sensors G and 36 and the pressure sensor H.
Detailed Description
The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Example 1:
referring to fig. 1, a digital hydraulic cylinder detection device includes a digital controller 1, and a tested cylinder hydraulic circuit and a loading cylinder loading circuit connected to the digital controller; an oil cylinder piston rod in the tested cylinder hydraulic circuit is connected with an oil cylinder piston rod in the loading cylinder loading circuit through a connecting tool (not shown), and a force sensor 2 and a grating ruler displacement sensor 3 are arranged on the connecting tool.
The tested cylinder hydraulic circuit comprises a tested cylinder 4, an electro-hydraulic reversing valve 5, a proportional flow cartridge valve 6 and an oil pump A7; an oil outlet of the oil pump A7 is communicated with an oil inlet of the proportional flow cartridge valve 6, an oil outlet of the proportional flow cartridge valve 6 is communicated with an oil inlet of the electro-hydraulic reversing valve 5, two oil through ports on the electro-hydraulic reversing valve 5 are respectively communicated with corresponding oil through ports on the tested cylinder 4, and oil return ports of the electro-hydraulic reversing valve 5 and the proportional flow cartridge valve 6 are both communicated with an oil tank; the two oil passages of the cylinder 4 to be tested are respectively provided with a pressure sensor A8 and a pressure sensor B9 for detecting the oil passage pressure.
And a cartridge type pressure reducing valve 10 for adjusting pressure and a pressure sensor C11 for detecting pressure are arranged between an oil outlet of the oil pump A7 and an oil inlet of the proportional flow cartridge valve 6. In this embodiment, the output oil pressure of the oil pump a is 35 MPa.
And a proportional overflow valve A12 for adjusting the flow and a temperature sensor 13 for detecting the temperature are arranged between the oil outlet of the proportional flow cartridge valve 6 and the oil inlet of the electro-hydraulic reversing valve 5.
The hydraulic circuit of the tested cylinder further comprises an electromagnetic directional valve A14 and an electromagnetic ball valve A15; an oil outlet of the proportional flow cartridge valve 6 is communicated with an oil inlet of the electromagnetic ball valve A15; an oil outlet of the electromagnetic ball valve A15 is communicated with an oil inlet of the electromagnetic reversing valve A14, two oil through ports on the electromagnetic reversing valve A14 are respectively communicated with corresponding oil through ports on the tested cylinder 4, and oil return ports of the electromagnetic reversing valve A14 and the electromagnetic ball valve A15 are both communicated with an oil tank.
A proportional overflow valve B16 for adjusting the flow is arranged between the oil outlet of the electromagnetic ball valve A15 and the oil inlet of the electromagnetic directional valve A14; an electromagnetic ball valve B17 is arranged between the electromagnetic direction changing valve A14 and an oil through port of the tested cylinder 4, and a pressure sensor D18 is arranged on the electromagnetic ball valve B17.
And a pressure sensor E19 for detecting pressure is arranged between the oil outlet of the proportional flow cartridge valve 6 and the oil inlet of the electromagnetic ball valve A15. A low-pressure ball valve 20 is arranged between the electro-hydraulic directional valve 5 or the electromagnetic directional valve A14 and the oil tank; a high-pressure ball valve 21 is arranged between an oil outlet of the oil pump A7 and the cartridge type reducing valve 10.
The tested cylinder hydraulic circuit also comprises an ultrahigh pressure circuit consisting of an electromagnetic ball valve C22, an electromagnetic ball valve D23 and an oil pump C24; the oil outlet of the oil pump C24 is respectively communicated with the oil inlets of the electromagnetic ball valve C22 and the electromagnetic ball valve D23, and the oil outlets of the electromagnetic ball valve C22 and the electromagnetic ball valve D23 are respectively communicated with two oil through ports of the tested cylinder 4; an ultrahigh pressure ball valve 25 and a pressure sensor F26 are further arranged between an oil outlet of the oil pump C24 and the electromagnetic ball valve C22 and the electromagnetic ball valve D23. In this embodiment, the output oil pressure of the oil pump C is 60 MPa.
The loading cylinder loading circuit comprises a loading cylinder 27, a proportional overflow valve C28, a cartridge valve assembly and an oil pump B29; the cartridge valve assembly comprises a two-way cartridge valve A30 and a two-way cartridge valve B31 which are respectively communicated with an oil outlet of an oil pump B29, and a two-way cartridge valve C32 and a two-way cartridge valve D33 which are respectively correspondingly connected with two oil through ports of the loading cylinder 27 and used for oil discharge; the inlet of the proportional overflow valve C28 is respectively communicated with the outlets of the two-way cartridge valve C32 and the two-way cartridge valve D33, and the outlet of the proportional overflow valve C28 is connected with the oil tank. In this embodiment, the oil pump B is mainly used for oil supplement, and the output oil pressure is 1 MPa.
The loading cylinder loading circuit further comprises a solenoid directional valve B34; two oil through ports of the electromagnetic directional valve B34 are communicated with corresponding oil through ports on the loading cylinder 27; two oil passages of the loading cylinder 27 are respectively provided with a pressure sensor G35 and a pressure sensor H36 for detecting the pressure of the oil passage.
In fig. 1, the two letters b indicate the ducts communicating with each other, and the hydraulic circuit functions as: before testing, the stroke of the loading cylinder is adjusted, so that the tested cylinder is conveniently connected with the loading cylinder.
In the digital hydraulic cylinder detection device, the stroke of the digital hydraulic cylinder is detected by the displacement sensor of the grating ruler, so that the measurement precision is high, and the precision level can reach 0.001 mm. The minimum starting pressure detection loop is formed by the electro-hydraulic reversing valve, the proportional flow cartridge valve, the cartridge type pressure reducing valve, the electromagnetic ball valve, the proportional overflow valve and the like, a special high-precision pressure sensor is adopted on the loop for accurate detection, the oil pressure on the loop can be accurately measured, and the measurement is accurate and high in precision. The proportional overflow valve can play the roles of constant pressure overflow, pressure stabilization, system unloading and safety protection. Through setting up cartridge formula relief pressure valve, be convenient for adjust oil circuit pressure, ensure the safety of oil circuit. The tested cylinder hydraulic circuit is provided with an ultrahigh pressure circuit consisting of an electromagnetic ball valve and an ultrahigh pressure ball valve, the highest pressure resistance can reach 60MPa, and the requirement of high pressure resistance of most digital hydraulic cylinders can be met. The loading cylinder loading loop adopts four two-way cartridge valves to form a bridge loop and a proportional overflow valve, and has the advantages of scientific integral structure, convenient installation and pressure regulation and lower cost.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The digital hydraulic cylinder detection device is characterized by comprising a digital controller (1), a tested cylinder hydraulic circuit and a loading cylinder loading circuit, wherein the tested cylinder hydraulic circuit and the loading cylinder loading circuit are connected with the digital controller; an oil cylinder piston rod in a tested cylinder hydraulic loop is connected with an oil cylinder piston rod in a loading cylinder loading loop through a connecting tool, and a force sensor (2) and a grating ruler displacement sensor (3) are arranged on the connecting tool;
the hydraulic circuit of the tested cylinder comprises a tested cylinder (4), an electro-hydraulic reversing valve (5), a proportional flow cartridge valve (6) and an oil pump A (7); an oil outlet of the oil pump A (7) is communicated with an oil inlet of the proportional flow cartridge valve (6), an oil outlet of the proportional flow cartridge valve (6) is communicated with an oil inlet of the electro-hydraulic reversing valve (5), two oil through ports on the electro-hydraulic reversing valve (5) are respectively communicated with corresponding oil through ports on the tested cylinder (4), and oil return ports of the electro-hydraulic reversing valve (5) and the proportional flow cartridge valve (6) are communicated with an oil tank; and two oil through ports of the tested cylinder (4) are respectively provided with a pressure sensor A (8) and a pressure sensor B (9) for detecting the pressure of an oil way.
2. The digital hydraulic cylinder detection device according to claim 1, wherein a cartridge type pressure reducing valve (10) for adjusting pressure and a pressure sensor C (11) for detecting pressure are arranged between an oil outlet of the oil pump A (7) and an oil inlet of the proportional flow cartridge valve (6).
3. The digital hydraulic cylinder detection device according to claim 2, wherein a proportional overflow valve A (12) for adjusting flow and a temperature sensor (13) for detecting temperature are arranged between the oil outlet of the proportional flow cartridge valve (6) and the oil inlet of the electro-hydraulic directional valve (5).
4. The digital hydraulic cylinder detection device according to any one of claims 1 to 3, wherein the hydraulic circuit of the tested cylinder further comprises an electromagnetic directional valve A (14) and an electromagnetic ball valve A (15); an oil outlet of the proportional flow cartridge valve (6) is communicated with an oil inlet of the electromagnetic ball valve A (15); an oil outlet of the electromagnetic ball valve A (15) is communicated with an oil inlet of the electromagnetic reversing valve A (14), two oil through ports on the electromagnetic reversing valve A (14) are respectively communicated with corresponding oil through ports on the tested cylinder (4), and oil return ports of the electromagnetic reversing valve A (14) and the electromagnetic ball valve A (15) are communicated with an oil tank.
5. The digital hydraulic cylinder detection device according to claim 4, wherein a proportional overflow valve B (16) for adjusting flow is arranged between an oil outlet of the electromagnetic ball valve A (15) and an oil inlet of the electromagnetic directional valve A (14); an electromagnetic ball valve B (17) is arranged between the electromagnetic directional valve A (14) and an oil through hole of the tested cylinder (4), and a pressure sensor D (18) is arranged on the electromagnetic ball valve B (17).
6. The digital hydraulic cylinder detection device according to claim 5, wherein a pressure sensor E (19) for detecting pressure is arranged between the oil outlet of the proportional flow cartridge valve (6) and the oil inlet of the electromagnetic ball valve A (15).
7. The digital hydraulic cylinder detection device according to claim 6, wherein a low-pressure ball valve (20) is arranged between the electro-hydraulic directional valve (5) or the electromagnetic directional valve A (14) and a fuel tank; a high-pressure ball valve (21) is arranged between the oil outlet of the oil pump A (7) and the cartridge type reducing valve (10).
8. The digital hydraulic cylinder detection device according to any one of claims 5 to 7, wherein the hydraulic circuit of the tested cylinder further comprises an electromagnetic ball valve C (22), an electromagnetic ball valve D (23) and an oil pump C (24); the oil outlet of the oil pump C (24) is respectively communicated with the oil inlets of the electromagnetic ball valve C (22) and the electromagnetic ball valve D (23), and the oil outlets of the electromagnetic ball valve C (22) and the electromagnetic ball valve D (23) are respectively communicated with the two oil through openings of the tested cylinder (4); an ultrahigh pressure ball valve (25) and a pressure sensor F (26) are also arranged between the oil outlet of the oil pump C (24) and the electromagnetic ball valve C (22) and the electromagnetic ball valve D (23).
9. A digital hydraulic cylinder sensing apparatus according to claim 8 wherein the charge cylinder charge circuit includes a charge cylinder (27), a proportional relief valve C (28), a cartridge valve assembly and an oil pump B (29); the cartridge valve assembly comprises a two-way cartridge valve A (30) and a two-way cartridge valve B (31) which are respectively communicated with an oil outlet of an oil pump B (29), and a two-way cartridge valve C (32) and a two-way cartridge valve D (33) which are respectively correspondingly connected with two oil through ports of the loading cylinder (27) and used for oil discharge; and the inlet of the proportional overflow valve C (28) is respectively communicated with the outlets of the two-way cartridge valve C (32) and the two-way cartridge valve D (33), and the outlet of the proportional overflow valve C (28) is connected with the oil tank.
10. A digital hydraulic cylinder sensing apparatus as claimed in claim 9 wherein said charging cylinder charging circuit further comprises a solenoid directional valve B (34); two oil through ports of the electromagnetic directional valve B (34) are communicated with corresponding oil through ports on the loading cylinder (27); and two oil through ports of the loading cylinder (27) are respectively provided with a pressure sensor G (35) and a pressure sensor H (36) for detecting the pressure of an oil way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920711731.5U CN209925343U (en) | 2019-05-17 | 2019-05-17 | Digital hydraulic cylinder detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920711731.5U CN209925343U (en) | 2019-05-17 | 2019-05-17 | Digital hydraulic cylinder detection device |
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| CN209925343U true CN209925343U (en) | 2020-01-10 |
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| CN201920711731.5U Expired - Fee Related CN209925343U (en) | 2019-05-17 | 2019-05-17 | Digital hydraulic cylinder detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111283673A (en) * | 2020-02-17 | 2020-06-16 | 广东博智林机器人有限公司 | Hydraulic system and mechanical arm |
-
2019
- 2019-05-17 CN CN201920711731.5U patent/CN209925343U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111283673A (en) * | 2020-02-17 | 2020-06-16 | 广东博智林机器人有限公司 | Hydraulic system and mechanical arm |
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