CN203756649U - Displacement measurement device for hydraulic cylinder - Google Patents
Displacement measurement device for hydraulic cylinder Download PDFInfo
- Publication number
- CN203756649U CN203756649U CN201420156013.3U CN201420156013U CN203756649U CN 203756649 U CN203756649 U CN 203756649U CN 201420156013 U CN201420156013 U CN 201420156013U CN 203756649 U CN203756649 U CN 203756649U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- piston rod
- displacement
- piston
- hydraulic cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A displacement measurement device for a hydraulic cylinder comprises a cylinder body, a pressing cover, a piston rod, a piston, a displacement measurement element and a measurement circuit. The displacement measurement element comprises a ferromagnetic material waveguide tube and a movable magnetic ring, the ferromagnetic material waveguide tube and the cylinder body are relatively fixed, the movable magnetic ring is arranged on the piston rod, the ferromagnetic material waveguide tube is connected with the measurement circuit through a signal line, an angular velocity sensor is arranged on the piston rod and connected with the measurement circuit through a signal line, and a geomagnetic sensor is arranged on the piston rod and connected with the measurement circuit through a signal line. The angular velocity sensor and a magnetostrictive displacement sensor are arranged on the piston rod of the hydraulic cylinder, the angular velocity sensor detects passing angles when a hinge point of the piston rod rotates around a hinge point of the cylinder body, and the accurate position of the piston rod can be obtained according to detection results of the magnetostrictive displacement sensor, so that actions are accurately controlled.
Description
Technical field:
The utility model relates to mechanical field, relates in particular to hydraulic machinery, particularly a kind of displacement measuring device for oil hydraulic cylinder.
Background technique:
Hydraulic machinery is widely used in engineering machinery as dynamical element.In order accurately to realize the control to action, in prior art, displacement measurement element is set on oil hydraulic cylinder, in order to measure the relative position of piston rod and cylinder body.Displacement measurement element consists of magnetostrictive displacement sensor, utilizes the ferromagnetic material waveguide of fixed position and the displacement that movable magnet ring being arranged on piston rod detects piston rod.Conventionally, cylinder body one end of oil hydraulic cylinder and one end of piston rod are hinged with a mechanical component separately, and the articulating point of the cylinder body of oil hydraulic cylinder is fixed, and the articulating point of piston rod is done around the rotation of cylinder body articulating point.And existing displacement measurement element can not be measured the rotation angle of piston rod articulating point, be difficult to realize the accurate control to action.
Summary of the invention:
The purpose of this utility model is to provide a kind of displacement measuring device for oil hydraulic cylinder, and the described this displacement measuring device for oil hydraulic cylinder will solve displacement measurement element on prior art oil hydraulic cylinder and can not measure the rotation angle of piston rod articulating point, be difficult to realize the technical problem to the accurate control of action.
This displacement measuring device for oil hydraulic cylinder of the present utility model, comprise cylinder body, gland, piston rod, piston, displacement measurement element and a measuring circuit, the two ends of described cylinder body are provided with hydraulic fluid port separately, described piston is arranged in cylinder body, described gland is arranged on one end of cylinder body, described piston rod extends in cylinder body through gland, piston rod is connected with piston, described displacement measurement element consists of magnetostrictive displacement sensor, described magnetostrictive displacement sensor comprises a ferromagnetic material waveguide and a movable magnet ring, described ferromagnetic material waveguide is relative with cylinder body fixing, described movable magnet ring is arranged on piston rod, described ferromagnetic material waveguide is connected with described measuring circuit by signaling line, wherein, on described piston rod, be provided with an angular-rate sensor, described angular-rate sensor is connected with described measuring circuit by signaling line.
Further, be provided with a geomagnetic sensor on described piston rod, described geomagnetic sensor is connected with described measuring circuit by signaling line.
Further, be parallel to it and be axially provided with an one-way valve mounting hole in described piston, described one-way valve mounting hole is communicated with two end faces of piston, in one-way valve mounting hole, is provided with one-way valve.
Further, one end of cylinder body is provided with guide sleeve, and described guide sleeve is between cylinder body and gland, and piston rod passes from guide sleeve, and the madial wall of guide sleeve and cylinder body is threaded connection.
Further, the other end of cylinder body is provided with hinging hole, and piston rod one end outside cylinder body is also provided with hinging hole, in the hinging hole described in any one, is provided with bearing.
Further, described hydraulic fluid port is connected by welded structure with described cylinder body.
Further, described cylinder body consists of seamless steel pipe.
Concrete, measuring circuit described in the utility model comprises single-chip microcomputer and peripheral circuit thereof, described measuring circuit, single-chip microcomputer and peripheral circuit thereof all can adopt known circuits scheme of the prior art, and those skilled in the art all understands, and does not repeat them here.
Working principle of the present utility model is: when the articulating point of piston rod is done around the rotation of cylinder body articulating point, angular-rate sensor detects the angle of process, in conjunction with the testing result of magnetostrictive displacement sensor, can obtain the exact position of piston rod.Utilize geomagnetic sensor, can obtain the absolute standard position of angular-rate sensor.
The utility model and prior art are compared, and its effect is actively with obvious.The utility model arranges angular-rate sensor and magnetostrictive displacement sensor on the piston rod of oil hydraulic cylinder, when the articulating point of piston rod is done the rotation around cylinder body articulating point, utilize angular-rate sensor to detect the angle of process, testing result in conjunction with magnetostrictive displacement sensor, can obtain the exact position of piston rod, thereby realize the accurate control to action.
Accompanying drawing explanation:
Fig. 1 is the structural representation of the displacement measuring device for oil hydraulic cylinder of the present utility model.
Fig. 2 is an embodiment's of the displacement measuring device for oil hydraulic cylinder of the present utility model hydraulic cylinder structure schematic diagram.
Fig. 3 is the generalized section of the piston in Fig. 2.
Fig. 4 is an embodiment's of the displacement measuring device for the oil hydraulic cylinder of the present utility model schematic diagram of piston rod.
Embodiment:
Embodiment 1:
As shown in Figure 1, displacement measuring device for oil hydraulic cylinder of the present utility model, comprise cylinder body 1, gland 2, piston rod 3, piston 4, displacement measurement element and a measuring circuit 10, the two ends of described cylinder body 1 are provided with hydraulic fluid port 5 separately, described piston 4 is arranged in cylinder body 1, described gland 2 is arranged on one end of cylinder body 1, described piston 4 bars 3 extend in cylinder body 1 through gland 2, piston 4 bars 3 are connected with piston 4, described displacement measurement element consists of magnetostrictive displacement sensor, described magnetostrictive displacement sensor comprises a ferromagnetic material waveguide and a movable magnet ring 11, described ferromagnetic material waveguide is relative with cylinder body 1 fixing, described movable magnet ring 11 is arranged on piston rod 3, described ferromagnetic material waveguide is connected with described measuring circuit 10 by signaling line, wherein, on described piston rod 3, be provided with an angular-rate sensor 12, described angular-rate sensor 12 is connected with described measuring circuit 10 by signaling line.
Further, be provided with a geomagnetic sensor 13 on described piston rod, described geomagnetic sensor 13 is connected with described measuring circuit 10 by signaling line.
As shown in Figure 2, Figure 3 and Figure 4, be parallel to it and be axially provided with an one-way valve mounting hole in described piston 4, described one-way valve mounting hole is communicated with two end faces of piston 4, is provided with one-way valve 7 in one-way valve mounting hole.
Concrete, place, the axle center central authorities of piston 4 are provided with mounting hole, and one end of piston rod 3 is through fastening with a nut 6 after mounting hole.
Further, one end of cylinder body 1 is provided with guide sleeve 8, and described guide sleeve 8 is between cylinder body 1 and gland 2, and piston rod 3 passes from guide sleeve 8, and guide sleeve 8 is threaded connection with the madial wall of cylinder body 1.
Further, the other end of cylinder body 1 is provided with hinging hole, and piston rod 3 one end outside cylinder body 1 is also provided with hinging hole, is provided with bearing 9 in the hinging hole described in any one.
Further, described hydraulic fluid port 5 is connected by welded structure with described cylinder body 1.
Further, described cylinder body 1 consists of seamless steel pipe.
Concrete, measuring circuit 10 described in the utility model comprises single-chip microcomputer and peripheral circuit thereof, described measuring circuit 10, single-chip microcomputer and peripheral circuit thereof all can adopt known circuits scheme of the prior art, and those skilled in the art all understands, and does not repeat them here.
The working principle of the present embodiment is: when the articulating point of piston rod is done around the rotation of cylinder body articulating point, angular-rate sensor 12 detects the angle of process, in conjunction with the testing result of magnetostrictive displacement sensor, can obtain the exact position of piston rod.Utilize geomagnetic sensor 13, can obtain the absolute standard position of angular-rate sensor 12.
Claims (7)
1. the displacement measuring device for oil hydraulic cylinder, comprise cylinder body, gland, piston rod, piston, displacement measurement element and a measuring circuit, the two ends of described cylinder body are provided with hydraulic fluid port separately, described piston is arranged in cylinder body, described gland is arranged on one end of cylinder body, described piston rod extends in cylinder body through gland, piston rod is connected with piston, described displacement measurement element consists of magnetostrictive displacement sensor, described magnetostrictive displacement sensor comprises a ferromagnetic material waveguide and a movable magnet ring, described ferromagnetic material waveguide is relative with cylinder body fixing, described movable magnet ring is arranged on piston rod, described ferromagnetic material waveguide is connected with described measuring circuit by signaling line, it is characterized in that: on described piston rod, be provided with an angular-rate sensor, described angular-rate sensor is connected with described measuring circuit by signaling line.
2. the displacement measuring device for oil hydraulic cylinder as claimed in claim 1, is characterized in that: on described piston rod, be provided with a geomagnetic sensor, described geomagnetic sensor is connected with described measuring circuit by signaling line.
3. the displacement measuring device for oil hydraulic cylinder as claimed in claim 1, it is characterized in that: in described piston, be parallel to it and be axially provided with an one-way valve mounting hole, described one-way valve mounting hole is communicated with two end faces of piston, in one-way valve mounting hole, is provided with one-way valve.
4. the displacement measuring device for oil hydraulic cylinder as claimed in claim 3, it is characterized in that: one end of cylinder body is provided with guide sleeve, described guide sleeve is between cylinder body and gland, and piston rod passes from guide sleeve, and the madial wall of guide sleeve and cylinder body is threaded connection.
5. the displacement measuring device for oil hydraulic cylinder as claimed in claim 3, is characterized in that: the other end of cylinder body is provided with hinging hole, and piston rod one end outside cylinder body is also provided with hinging hole, in the hinging hole described in any one, is provided with bearing.
6. the displacement measuring device for oil hydraulic cylinder as claimed in claim 3, is characterized in that: described hydraulic fluid port is connected by welded structure with described cylinder body.
7. the displacement measuring device for oil hydraulic cylinder as claimed in claim 3, is characterized in that: described cylinder body consists of seamless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420156013.3U CN203756649U (en) | 2014-04-01 | 2014-04-01 | Displacement measurement device for hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420156013.3U CN203756649U (en) | 2014-04-01 | 2014-04-01 | Displacement measurement device for hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756649U true CN203756649U (en) | 2014-08-06 |
Family
ID=51251930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420156013.3U Expired - Fee Related CN203756649U (en) | 2014-04-01 | 2014-04-01 | Displacement measurement device for hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756649U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396495A (en) * | 2020-03-25 | 2020-07-10 | 桂林电子科技大学 | Shock absorber and commercial car suspension |
-
2014
- 2014-04-01 CN CN201420156013.3U patent/CN203756649U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396495A (en) * | 2020-03-25 | 2020-07-10 | 桂林电子科技大学 | Shock absorber and commercial car suspension |
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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: 20140806 Termination date: 20200401 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |