CN107764226B - Four corners displacement sensor overall arrangement transmission structure - Google Patents
Four corners displacement sensor overall arrangement transmission structure Download PDFInfo
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- CN107764226B CN107764226B CN201711103301.7A CN201711103301A CN107764226B CN 107764226 B CN107764226 B CN 107764226B CN 201711103301 A CN201711103301 A CN 201711103301A CN 107764226 B CN107764226 B CN 107764226B
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- displacement sensor
- layout
- transmission structure
- rocker arm
- ring groove
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
Abstract
The invention belongs to the field of hydraulic engineering, and relates to a structure with four-corner displacement sensor layout and reliable displacement feedback transmission. In modern hydraulic engineering design, along with the gradual increase of the electrical redundancy requirement of a hydraulic servo control technology, the requirements on the spatial layout of multiple sensors and the transmission reliability are gradually improved, and the layout of the multiple sensors in a limited space and the operability of installation and debugging and the precision and reliability of a transmission structure need to be ensured.
Description
Technical Field
The invention belongs to the field of hydraulic engineering, and relates to a displacement feedback transmission structure with four-corner displacement sensor layout and high precision and reliability.
Background
When a multi-electrical redundancy hydraulic servo product is controlled, each electrical redundancy channel needs to receive a displacement signal of a hydraulic actuating rod actuated by linear displacement so as to realize servo control, and a sensor type electrical element is usually used for completing feedback of the displacement signal during design. At present, the most commonly used sensor for feeding back linear displacement is a redundancy linear displacement sensor, axial linear displacement of a hydraulic actuating rod can be directly and synchronously transmitted to the redundancy linear displacement sensor, but the redundancy linear displacement sensor has the defect of long axial length, a plurality of sets of coils are integrated in one sensor, single-point faults are easily formed, the reliability is low, and the sensor is not suitable for products which have the requirements on configuration of the multi-sensor and short axial size and have the condition that the hydraulic actuating rod does not have a central hole and is internally provided with the linear sensor.
Disclosure of Invention
The purpose of the invention is as follows:
the structure with the four-corner displacement sensor layout and the displacement feedback transmission with high precision and reliability is provided, and the operability, precision and reliability of installation and debugging are guaranteed.
The technical scheme adopted by the invention is as follows:
a four-corner displacement sensor layout transmission structure comprises a hydraulic actuating rod 1, a double-ring-groove joint 2, an extension spring 3, an angular displacement sensor 4, a first screw 5, a nut 6, a rocker arm 7, a second screw 8 and a sensor pressing sheet 9. The method is characterized in that: the double-ring-groove joint 2 and the hydraulic actuating rod 1 are locked by a nut 6, so that the double-ring-groove joint 2 can synchronously receive axial linear displacement of the hydraulic actuating rod 1, a ball head 10 of the rocker arm 7 is correspondingly placed in a ring groove 14 of the double-ring-groove joint 2, the rocker arm 7 can be driven to deflect after the double-ring-groove joint 2 generates linear displacement, the rocker arm 7 is fastened with a rotor of the angular displacement sensor 4 through a screw I5, deflection of the rocker arm 7 can be transmitted to the angular displacement sensor 4, the angular displacement sensor 4 is fastened on an installation support through a sensor pressing sheet 9 and a screw II 8, and fastening and adjustment of the angular displacement sensor 4 can be achieved laterally;
furthermore, the two rocker arms 7 on the same side are tensioned by the tension spring 3, so that the rocker arms 7 are close to each other, and the ball head 10 is tightly attached to the surface of the ring groove to eliminate the precision influence caused by the fit clearance between the ball head 10 and the ring groove 14;
furthermore, one end of the rocker arm 7 is provided with a ball head 10, and the other end of the rocker arm is provided with a notch and a hole, so that a sensor rotor can be inserted into the hole, and the notch is tightened through a screw to achieve the fastening purpose;
furthermore, the double ring groove joint 2 is provided with two ring grooves 14 which are respectively matched with the ball heads 10 of the 4 rocker arms 7 on the two sides correspondingly.
The invention has the beneficial effects that:
the four angular displacement sensors are uniformly distributed on the left and right sides of the hydraulic actuating rod, the structure is compact, the space is saved, each angular displacement sensor is pressed by 4 sensor pressing sheets and is fastened on the mounting bracket by screws so as to achieve the purpose of fixing the angular displacement sensor, and the screws are adjusted in a lateral direction, so that the four angular displacement sensors have better operability. The mechanism that comprises dicyclo groove joint, extension spring, sensor rocking arm can make the axial linear displacement that the pole produced with hydraulic pressure change into the angle displacement to feedback position signal to control system through the angle displacement sensor, rocking arm simple structure is reliable, and extension spring control rocking arm is taut close to each other, and the feedback error that bulb and annular fit clearance caused is in order to eliminate bulb and annular to the ball head tight annular groove face, and the precision guarantee nature is high.
Drawings
FIG. 1: the four-corner displacement sensor is arranged and composed of a transmission structure;
wherein, 1-hydraulic actuating rod; 2-double ring groove joint; 3-extension spring; a 4-angular displacement sensor; 5, screwing one; 6-a nut; 7-a rocker arm; 8-screw II; 9-a sensor pressing sheet;
FIG. 2: a schematic diagram of a rocker arm structure;
10-a ball head; 11-an angular displacement sensor rotor installation hole; 12-fastening the notch; 13-the first screw is screwed into the threaded hole;
FIG. 3: a schematic diagram of a double-ring groove joint structure;
14-ring groove.
Detailed Description
The invention is described in further detail below with reference to the drawings.
The layout and transmission structure form of the four-corner displacement sensor is shown in figure 1. The mounting mode of the transmission structure of the layout of the four-corner displacement sensor is indicated in the figure. The double annular groove joint 2 is tightly connected with the hydraulic actuating rod 1 through the nut 6, so that the double annular groove joint 2 can synchronously receive the linear displacement of the hydraulic actuating rod 1. The ball head 10 of the rocker arm 7 is placed in the annular groove 14 at the corresponding part of the double-annular-groove joint 2, so that the double-annular-groove joint 2 can drive the rocker arm 7 to deflect after generating linear displacement. The other end of the rocker arm 7 is connected with a rotor of the angular displacement sensor 4 and tightened by a first screw 5 to tighten the gap so as to ensure that the deflection of the rocker arm 7 can be transmitted to the angular displacement sensor 4. Angular displacement sensor 4 is fastened on the mounting bracket by four sensor pressing sheets 9 and two screws 8 which are uniformly distributed along the circumference, so that the fastening and the adjustment of angular displacement sensor 4 can be realized from the side direction. An extension spring 3 is arranged between the rocker arms 7 on the same side, so that the rocker arms 7 are close to each other, and the ball head 10 is tightly attached to the surface of the ring groove to eliminate the precision influence caused by the fit clearance between the ball head and the ring groove 14.
The structural form of the rocker arm is shown in figure 2, a rotor of an angular displacement sensor 4 is inserted into an angular displacement sensor rotor installation hole 11 of the rocker arm 7, a screw is screwed into a threaded hole 13 through an installation screw 5 to tighten a gap 12, so that the rocker arm 7 and the sensor rotor are connected and fastened, and a ball head 10 is placed into a ring groove 14 of a double-ring-groove joint 2 to form clearance fit.
The double ring groove joint 2 of the present invention has a structural form as shown in fig. 3, and a ball 10 corresponding to the rocker arm 7 is placed in the ring groove 14 to form a clearance fit.
Claims (4)
1. The four-corner displacement sensor layout transmission structure is characterized in that a double-ring groove joint (2) and a hydraulic actuating rod (1) are fixedly connected through a nut (6), a ball head (10) of a rocker arm (7) is placed in a ring groove (14) at a corresponding position of the double-ring groove joint (2), the other end of the rocker arm (7) is connected with a rotor of an angular displacement sensor (4) and tightened and fastened through a first screw (5) to form a notch, each angular displacement sensor (4) is fastened on a mounting bracket through a first screw (5) and a second screw (8) by four sensor pressing sheets (9) uniformly distributed along the circumference, and a tension spring (3) is mounted between rocker arms (7) on the same side.
2. The transmission structure of the layout of the four-corner displacement sensor according to claim 1, wherein one end of the rocker arm (7) is provided with a ball head (10), the other end of the rocker arm is provided with a unthreaded hole for inserting into a rotor of the angular displacement sensor (4), a notch is formed, displacement space required by tightening the unthreaded hole part is obtained, and a threaded hole is formed to realize the tightening of the notch.
3. The transmission structure of the layout of the four-corner displacement sensor according to claim 2, wherein the double-ring-groove joint (2) is provided with two ring grooves (14) which are respectively matched with the ball heads (10) of the 4 rocker arms (7) on the two sides.
4. The transmission structure of the layout of the four-corner displacement sensor according to claim 3, characterized in that an extension spring (3) is arranged between the two rocker arms (7) on the same side, so that the two rocker arms (7) on the same side are close to each other, and the ball head (10) is tightly attached to the surface of the ring groove to eliminate the precision influence caused by the fit clearance between the ball head (10) and the ring groove (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711103301.7A CN107764226B (en) | 2017-11-09 | 2017-11-09 | Four corners displacement sensor overall arrangement transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711103301.7A CN107764226B (en) | 2017-11-09 | 2017-11-09 | Four corners displacement sensor overall arrangement transmission structure |
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| Publication Number | Publication Date |
|---|---|
| CN107764226A CN107764226A (en) | 2018-03-06 |
| CN107764226B true CN107764226B (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711103301.7A Active CN107764226B (en) | 2017-11-09 | 2017-11-09 | Four corners displacement sensor overall arrangement transmission structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109373960B (en) * | 2018-12-05 | 2021-09-14 | 兰州飞行控制有限责任公司 | Redundancy angular displacement detection device and installation method |
| CN111102951A (en) * | 2019-12-25 | 2020-05-05 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Take spring sensor output rocking arm |
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| CN201534612U (en) * | 2009-09-29 | 2010-07-28 | 江西洪都航空工业集团有限责任公司 | Leading edge flap control device |
| CN102944207B (en) * | 2011-08-15 | 2015-04-29 | 中国航空工业集团公司西安飞机设计研究所 | Springback type angle displacement measurement device and measurement method thereof |
| CN104554710B (en) * | 2014-11-19 | 2018-05-01 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of double remaining aircraft leading edge wing flap servoactuation systems of machinery |
| CN104527969B (en) * | 2014-11-19 | 2018-04-13 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of aircraft front wing servoactuation system and its method of servo-controlling |
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| CN107764226A (en) | 2018-03-06 |
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