CN214304648U - Dissimilar steering engine hydraulic cylinder displacement measurement device - Google Patents
Dissimilar steering engine hydraulic cylinder displacement measurement device Download PDFInfo
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- CN214304648U CN214304648U CN202120012401.4U CN202120012401U CN214304648U CN 214304648 U CN214304648 U CN 214304648U CN 202120012401 U CN202120012401 U CN 202120012401U CN 214304648 U CN214304648 U CN 214304648U
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- piston rod
- displacement sensor
- protective cover
- displacement
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Abstract
The utility model discloses a non-similar steering wheel pneumatic cylinder displacement measurement device, include: a first piston rod and a second piston rod penetrate through two ends of the hydraulic cylinder respectively; the magnetostrictive displacement sensor is fixed on the outer side surface of one end, close to the first piston rod, of the hydraulic cylinder, a waveguide tube for magnetostrictive displacement sensing is arranged along the axial direction of the hydraulic cylinder, and an opening magnetic ring is sleeved on the surface of the waveguide tube; the laser displacement sensor is fixed on the outer surface of one end of the hydraulic cylinder, which is close to the second piston rod; the bottom of the protective cover is open, the protective cover is covered on the outer sides of the magnetostrictive displacement sensor and the laser displacement sensor, and the bottom of the protective cover is connected with the outer surface of the hydraulic cylinder in a sliding mode along the length direction of the hydraulic cylinder; the opening magnetic ring is fixedly connected with the inner wall of the protective cover; the reflecting plate is fixed at the end part of the second piston rod; the reflecting plate is fixedly connected with the end part of the protective cover. The utility model provides a displacement measurement device reliability, measurement accuracy are higher, the practicality is stronger.
Description
Technical Field
The utility model relates to a steering wheel pneumatic cylinder position appearance measures technical field, and more specifically the saying so relates to a non-similar steering wheel pneumatic cylinder displacement measurement device.
Background
For a steering engine hydraulic system, the displacement of a steering engine hydraulic cylinder is usually required to be accurately measured, and an actual rudder angle is obtained after conversion. At present, most steering engine hydraulic cylinders adopt a displacement sensor to measure displacement, and when the displacement sensor breaks down, the displacement of the steering engine hydraulic cylinders cannot be accurately measured, so that the reliability of the system is reduced. When the current common magnetostrictive displacement sensor measures displacement, a pull rod is fixed at the head of a piston rod of a hydraulic cylinder of the steering engine and drives a magnetic ring to move, the pull rod is generally made into a thin strip-shaped structure, the structural form has insufficient rigidity and needs higher installation precision,
therefore, it is an urgent need to solve the problem of the art to develop a non-similar displacement measuring device for a hydraulic cylinder of a steering engine, which has higher reliability, measurement accuracy and practicability.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a reliability, measure higher, the stronger non-similar steering wheel pneumatic cylinder displacement measurement device of practicality.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a dissimilar steering engine hydraulic cylinder displacement measurement device, includes:
the hydraulic cylinder is characterized in that a first piston rod and a second piston rod penetrate through two ends of the hydraulic cylinder respectively, the first piston rod and the second piston rod are connected through a piston, and the first piston rod and the second piston rod move along the axial direction of the hydraulic cylinder;
the magnetostrictive displacement sensor is fixed on the outer side face of one end, close to the first piston rod, of the hydraulic cylinder, a waveguide tube for magnetostrictive displacement sensing is arranged along the axial direction of the hydraulic cylinder, an opening magnetic ring is sleeved on the surface of the waveguide tube, and the opening magnetic ring moves along the length direction of the waveguide tube;
the laser displacement sensor is fixed on the outer surface of one end, close to the second piston rod, of the hydraulic cylinder; the waveguide tube extends towards one end of the laser displacement sensor;
the bottom of the protective cover is in an opening shape, the protective cover is covered on the outer sides of the magnetostrictive displacement sensor and the laser displacement sensor, and the bottom of the protective cover is connected with the outer surface of the hydraulic cylinder in a sliding mode along the length direction of the hydraulic cylinder; the opening magnetic ring is fixedly connected with the inner wall of the protective cover;
the reflecting plate is used for reflecting laser emitted by the laser displacement sensor and is fixed at the end part of the second piston rod; the reflecting plate is fixedly connected with the end part of the protective cover.
The beneficial effects of adopting above-mentioned technical scheme are that, the utility model discloses the magnetostrictive displacement sensor and the laser displacement sensor of well two kinds of non-similar displacement measurement principles measure the displacement of pneumatic cylinder simultaneously, and two displacement sensors each other are backup, have redundant characteristic, can effectively improve displacement measurement's reliability and accuracy.
Preferably, a boss is fixedly arranged on the outer surface of the hydraulic cylinder, and the magnetostrictive displacement sensor and the laser displacement sensor are both fixed on the upper surface of the boss. The surface of the boss is a plane, so that the magnetostrictive displacement sensor and the laser displacement sensor can be conveniently fixed.
Preferably, linear guide rails are arranged on two sides of the boss along the length direction of the boss, and two sides of the bottom of the protective cover are in sliding connection with the linear guide rails. The linear guide rail enables the protective cover to slide more smoothly, and the moving path is more accurate.
Preferably, the top of the open magnetic ring is fixedly connected with a mounting seat, and the other end of the mounting seat is fixedly connected with the top of the inner wall of the protective cover.
Preferably, the protection casing is both ends open-ended cuboid, the bottom of protection casing lateral surface is equipped with the displacement chi along its length direction. The displacement ruler can measure the moving distance of the hydraulic cylinder.
Preferably, a pointer is arranged on the end face of the hydraulic cylinder close to one end of the reflecting plate, the pointer and the displacement ruler are located on the same plane, one end of the pointer is fixed with the end face of the hydraulic cylinder, and the other end of the pointer extends to the surface of the displacement ruler. The displacement of the hydraulic cylinder can be better read through the pointer.
Can know via foretell technical scheme, compare with prior art, the utility model discloses a non-similar steering wheel pneumatic cylinder displacement measurement device is provided, its beneficial effect is:
(1) the utility model adopts two non-similar displacement measuring principles, namely a laser displacement sensor and a magnetostrictive displacement sensor to measure the displacement of the hydraulic cylinder of the steering engine, and the two displacement sensors are backup to each other, thereby having the redundancy characteristic and effectively improving the reliability of displacement measurement;
(2) the reflecting plate, the protective cover and the linear guide rail have the functions of guiding and preventing the first piston rod and the second piston rod from rotating, so that the measuring structure is more accurate, the displacement measuring device is simple in structure, and the practicability and practicability are high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a front view of a displacement measuring device provided by the present invention;
fig. 2 is a top view of the displacement measuring device provided by the present invention;
fig. 3 is a front view of the displacement measuring device according to the present invention after the dust cover is hidden;
fig. 4 is a front view of the displacement measuring device after the dust cover is hidden.
Wherein, in the figure,
1-a hydraulic cylinder;
11-a first piston rod; 12-a boss; 13-a second piston rod;
2-a magnetostrictive displacement sensor;
21-a waveguide; 22-an open magnetic ring;
3-a laser displacement sensor; 4-a protective cover; 5-a reflector plate; 6-linear guide rail; 7-mounting seats; 8-displacement ruler; 9-pointer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model discloses non-similar steering wheel pneumatic cylinder displacement measurement device, include:
the hydraulic cylinder comprises a hydraulic cylinder 1, wherein a first piston rod 11 and a second piston rod 13 penetrate through two ends of the hydraulic cylinder 1 respectively, the first piston rod 11 is connected with the second piston rod 13 through a piston, and the first piston rod 11 and the second piston rod 13 move along the axial direction of the hydraulic cylinder 1;
the magnetostrictive displacement sensor 2 is characterized in that the magnetostrictive displacement sensor 2 is fixed on the outer side surface of one end, close to the first piston rod 11, of the hydraulic cylinder 1, a waveguide tube 21 of the magnetostrictive displacement sensor 2 is arranged along the axial direction of the hydraulic cylinder 1, an opening magnetic ring 22 is sleeved on the surface of the waveguide tube 21, and the opening magnetic ring 22 moves along the length direction of the waveguide tube 21;
the laser displacement sensor 3 is fixed on the outer surface of one end, close to the second piston rod 13, of the hydraulic cylinder 1; the waveguide 21 extends toward one end of the laser displacement sensor 3;
the bottom of the protective cover 4 is open and covers the outer sides of the magnetostrictive displacement sensor 2 and the laser displacement sensor 3, and the bottom of the protective cover 4 is connected with the outer surface of the hydraulic cylinder 1 in a sliding mode along the length direction of the hydraulic cylinder 1; the opening magnetic ring 22 is fixedly connected with the inner wall of the protective cover 4;
the reflecting plate 5 is used for reflecting laser emitted by the laser displacement sensor 3, and the reflecting plate 5 is fixed at the end part of the second piston rod 13; the reflecting plate 5 is fixedly connected with the end part of the protective cover 4. The protection casing 4 can shelter from the laser that laser displacement sensor 3 transmitted, has dustproof function simultaneously.
In order to further optimize the technical scheme, a boss 12 is fixedly arranged on the outer surface of the hydraulic cylinder 1, and the magnetostrictive displacement sensor 2 and the laser displacement sensor 3 are both fixed on the upper surface of the boss 12.
In order to further optimize the technical scheme, linear guide rails 6 are arranged on two sides of the boss 12 along the length direction of the boss, and two sides of the bottom of the protective cover 4 are in sliding connection with the linear guide rails 6.
In order to further optimize the technical scheme, the top of the open magnetic ring 22 is fixedly connected with the mounting seat 7, and the other end of the mounting seat 7 is fixedly connected with the top of the inner wall of the protective cover 4.
In order to further optimize the above technical scheme, protection casing 4 is both ends open-ended cuboid, and the bottom of protection casing 4 lateral surface is equipped with displacement chi 8 along its length direction.
In order to further optimize the technical scheme, the end face of one end, close to the reflecting plate 5, of the hydraulic cylinder 1 is provided with a pointer 9, the pointer 9 and the displacement ruler 8 are located on the same plane, one end of the pointer 9 is fixed with the end face of the hydraulic cylinder 1, and the other end of the pointer extends to the surface of the displacement ruler 8. End covers are arranged at two ends of the hydraulic cylinder 1, and the pointer 9 is fixed on the end covers.
The working process is as follows:
when the first piston rod 11 of the hydraulic cylinder 1 moves, the first piston rod 11 drives the second piston rod 13 to move, the reflecting plate 5 moves along with the second piston rod 13, the protective cover 4 moves along the linear guide rail 6, and then the mounting seat 7 and the opening magnetic ring 22 are driven to move, and at the moment, the laser displacement sensor 3 and the magnetostrictive displacement sensor 2 can obtain the actual displacement of the hydraulic cylinder 1 according to the change of the received signals; the moving distance of the hydraulic cylinder 1 can be visually observed according to the reading on the displacement ruler 8, and meanwhile, the reading on the displacement ruler 8 can judge whether the laser displacement sensor 3 and the magnetostrictive displacement sensor 2 are in failure or not; when the deviation of the displacement values obtained by the laser displacement sensor 3 and the magnetostrictive displacement sensor 2 is within a certain range, any one of the displacement values can be taken as the actual displacement of the hydraulic cylinder 1, and when the deviation of the displacement values obtained by the laser displacement sensor 3 and the magnetostrictive displacement sensor 2 exceeds the set range, the further detection is carried out, and the displacement value obtained by which displacement sensor is judged to be the accurate displacement of the hydraulic cylinder 1.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a dissimilar steering wheel pneumatic cylinder displacement measurement device which characterized in that includes:
the hydraulic cylinder comprises a hydraulic cylinder (1), wherein a first piston rod (11) and a second piston rod (13) penetrate through two ends of the hydraulic cylinder (1) respectively, the first piston rod (11) and the second piston rod (13) are connected through a piston, and the first piston rod (11) and the second piston rod (13) move along the axial direction of the hydraulic cylinder (1);
the magnetostrictive displacement sensor (2) is fixed on the outer side face of one end, close to the first piston rod (11), of the hydraulic cylinder (1), a waveguide tube (21) of the magnetostrictive displacement sensor (2) is arranged along the axial direction of the hydraulic cylinder (1), an opening magnetic ring (22) is sleeved on the surface of the waveguide tube (21), and the opening magnetic ring (22) moves along the length direction of the waveguide tube (21);
the laser displacement sensor (3), the laser displacement sensor (3) is fixed on the outer surface of one end, close to the second piston rod (13), of the hydraulic cylinder (1); the waveguide (21) extends towards one end of the laser displacement sensor (3);
the bottom of the protective cover (4) is open and covers the outer sides of the magnetostrictive displacement sensor (2) and the laser displacement sensor (3), and the bottom of the protective cover (4) is connected with the outer surface of the hydraulic cylinder (1) in a sliding mode along the length direction of the hydraulic cylinder (1); the opening magnetic ring (22) is fixedly connected with the inner wall of the protective cover (4);
the reflecting plate (5) is used for reflecting laser emitted by the laser displacement sensor (3), and the reflecting plate (5) is fixed at the end part of the second piston rod (13); the reflecting plate (5) is fixedly connected with the end part of the protective cover (4).
2. The dissimilar steering engine hydraulic cylinder displacement measuring device according to claim 1, wherein a boss (12) is fixedly arranged on the outer surface of the hydraulic cylinder (1), and the magnetostrictive displacement sensor (2) and the laser displacement sensor (3) are fixed on the upper surface of the boss (12).
3. A dissimilar steering engine hydraulic cylinder displacement measuring device according to claim 2, characterized in that linear guide rails (6) are arranged on two sides of the boss (12) along the length direction of the boss, and two sides of the bottom of the protective cover (4) are in sliding connection with the linear guide rails (6).
4. A dissimilar steering engine hydraulic cylinder displacement measuring device according to claim 3, characterized in that the top of the open magnetic ring (22) is fixedly connected with a mounting base (7), and the other end of the mounting base (7) is fixedly connected with the top of the inner wall of the protective cover (4).
5. The dissimilar steering engine hydraulic cylinder displacement measuring device according to claim 4, wherein the protective cover (4) is a cuboid with two open ends, and a displacement ruler (8) is arranged at the bottom of the outer side surface of the protective cover (4) along the length direction of the protective cover.
6. A dissimilar steering engine hydraulic cylinder displacement measuring device according to claim 5, characterized in that a pointer (9) is arranged on the end face of the hydraulic cylinder (1) close to one end of the reflecting plate (5), the pointer (9) and the displacement ruler (8) are located on the same plane, one end of the pointer (9) is fixed with the end face of the hydraulic cylinder (1), and the other end of the pointer extends to the surface of the displacement ruler (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120012401.4U CN214304648U (en) | 2021-01-05 | 2021-01-05 | Dissimilar steering engine hydraulic cylinder displacement measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120012401.4U CN214304648U (en) | 2021-01-05 | 2021-01-05 | Dissimilar steering engine hydraulic cylinder displacement measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214304648U true CN214304648U (en) | 2021-09-28 |
Family
ID=77822570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120012401.4U Active CN214304648U (en) | 2021-01-05 | 2021-01-05 | Dissimilar steering engine hydraulic cylinder displacement measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214304648U (en) |
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2021
- 2021-01-05 CN CN202120012401.4U patent/CN214304648U/en active Active
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