CN111891383B - Auxiliary measuring tool and measuring method for displacement of piston rod of hydraulic steering engine of helicopter - Google Patents
Auxiliary measuring tool and measuring method for displacement of piston rod of hydraulic steering engine of helicopter Download PDFInfo
- Publication number
- CN111891383B CN111891383B CN202010746412.5A CN202010746412A CN111891383B CN 111891383 B CN111891383 B CN 111891383B CN 202010746412 A CN202010746412 A CN 202010746412A CN 111891383 B CN111891383 B CN 111891383B
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- piston rod
- fastening
- measuring
- stretching
- plate
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title abstract description 11
- 238000005259 measurement Methods 0.000 claims description 7
- 241000587161 Gomphocarpus Species 0.000 claims description 4
- 238000000691 measurement method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
-
- 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
- G01B21/02—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 length, width, or thickness
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Actuator (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses an auxiliary measuring tool and a measuring method for the displacement of a piston rod of a hydraulic steering engine of a helicopter, wherein the auxiliary measuring tool comprises a fastening plate, a measuring plate and a spreading piece, the measuring plate is positioned above the fastening plate and hinged with the fastening plate, one end of the fastening plate is provided with a fastening end, the other end of the fastening plate is provided with a first spreading end, one end of the measuring plate is provided with a stretching-in end, the other end of the measuring plate is provided with a second spreading end, the spreading piece for adjusting the distance is arranged between the first spreading end and the second spreading end, the fastening end and the stretching-in end are positioned on the same side of a hinged position, and the spreading piece is positioned on the other side of the hinged position. The auxiliary measuring tool has the advantages of simple and reliable structure and convenient disassembly and assembly. In the measuring work, the auxiliary measuring tool reduces the work difficulty, improves the measuring accuracy and does not influence the system performance.
Description
Technical Field
The invention relates to a helicopter hydraulic steering engine, in particular to an auxiliary measuring tool for the displacement of a piston rod of the helicopter hydraulic steering engine and a measuring method thereof.
Background
When the displacement of the piston rod 6 of the helicopter hydraulic steering engine is tested on-board, an auxiliary measuring tool is needed, and the measuring instrument is connected with the steering engine piston rod 6 for measuring the displacement of the piston rod 6 of the steering engine under the control of various electric signals.
Since the rod head 61 is provided with the pull rod, the displacement of the measuring plate can not be directly measured, and the displacement of the piston rod 6 can be obtained by measuring the displacement of the measuring plate by a measuring instrument. The existing auxiliary measuring tool consists of a measuring plate, a clamping block matched with the piston rod 6 and bolts and nuts used for fixing the clamping block.
The measuring method of the existing auxiliary measuring tool comprises the following steps: clamping blocks are placed on two sides of the piston rod 6, and then the clamping blocks on two sides are tightened by bolts and nuts, so that the clamping blocks are tightly attached to the piston rod 6, and the auxiliary measuring tool keeps relative static with the piston rod 6.
The conventional auxiliary measuring tool fastening mode is designed to clamp two sides of the piston rod 6, the direction of the acting force is perpendicular to the axial direction of the piston rod 6, and the inertial force generated by the piston rod 6 when moving along the axial direction is the axial direction of the piston, so that the clamping of the tool can only generate axial friction force between the tool and the piston rod 6 through the acting force of the clamping. The surface of the piston rod 6 is provided with an anti-corrosion paint layer, and the friction coefficient is small, so that the piston rod 6 and the measuring tool are easy to relatively displace, thereby affecting the accuracy of the measuring result. And the bolt is fastened by a tool in the fastening of the nut, and the position is in a dense area of the parts on the machine, so that the operating space is small, and the difficulty of disassembly and assembly is increased by using the tool.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an auxiliary measuring tool for the displacement of the piston rod of the hydraulic steering engine of the helicopter, which is reliable in connection with the piston rod, improves the measuring accuracy and does not influence the system performance.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an auxiliary measurement instrument of helicopter hydraulic steering engine piston rod displacement, includes the fastening plate, measures the board and struts the piece, the measuring plate is located the top of fastening plate and both are articulated, the one end of fastening plate is equipped with the fastening end, and the other end is equipped with first the opening end, and the one end of measuring the board is equipped with stretches into the end, and the other end is equipped with the second and struts the end, and first opening end and second are propped and are equipped with the piece that struts that is used for adjusting the interval between the opening end, the fastening end is located the same side of articulated department with stretching into the end, prop the opposite side that the piece is located articulated department.
As a further improvement of the above technical scheme: the second stretching end is provided with a threaded hole, the stretching piece is a fastening screw, the fastening screw comprises a nail head and a screw rod, and the screw rod passes through the threaded hole and then is in butt joint with the first stretching end.
As a further improvement of the above technical scheme: the fastening end is provided with a U-shaped groove.
As a further improvement of the above technical scheme: the extending end is provided with a chamfer.
The invention also discloses a measuring method of the auxiliary measuring tool for the displacement of the piston rod of the hydraulic steering engine of the helicopter, which comprises the following steps:
Step one, adjusting a stretching piece, wherein an extending end extends into a gap between a rod head of a piston rod and a pull rod, and a fastening end is positioned below the rod head of the piston rod;
Step two, adjusting the stretching piece to stretch the first stretching end and the second stretching end, and clamping the rod head of the piston rod by the fastening end and the stretching end;
And thirdly, contacting the gauge head of the measuring instrument with a measuring plate for measurement.
Compared with the prior art, the invention has the beneficial effects that:
According to the auxiliary measuring tool for the displacement of the piston rod of the hydraulic steering engine of the helicopter, the fastening plate is hinged with the measuring plate, so that the connection is reliable, the extending end extends into a gap between the piston rod head and the pull rod during measurement, the fastening end is positioned below the piston rod head, the extending end and the fastening end clamp the piston rod head through adjusting the expanding piece, the fastening effect is obviously improved, and the auxiliary measuring tool is connected with the piston rod more reliably.
In the use process, the fastening plate and the measuring plate clamp the piston rod to be measured by adjusting the spreading piece to replace the original tools such as a spanner and the like to screw the fastening screw and the nut to clamp the piston rod to be measured, the original friction force is replaced to directly clamp, the disassembly and assembly process is more convenient, the piston rod to be measured is better protected, and the performance of the system is not affected. The original fastening force perpendicular to the movement direction of the piston rod is replaced by the fastening force identical to the movement direction of the piston rod, so that the fastening effect is improved, and the measurement accuracy is further improved.
Drawings
Fig. 1 is a schematic structural diagram of an auxiliary measuring tool for the displacement of a piston rod of a hydraulic steering engine of a helicopter.
Fig. 2 is a schematic diagram of the working state of the auxiliary measuring tool for the displacement of the piston rod of the hydraulic steering engine of the helicopter.
Fig. 3 is a schematic structural view of the fastening plate according to the present invention.
FIG. 4 is a schematic view of the structure of the measuring plate according to the present invention.
Fig. 5 is a schematic structural view of the spreader of the present invention.
Fig. 6 is a schematic structural view of a piston rod according to the present invention.
The reference numerals in the drawings denote: 1. a fastening plate; 11. a fastening end; 2. a measuring plate; 21. an insertion end; 22. a threaded hole; 3. a connecting pin; 4. a spreader; 41. a pin head; 42. a screw; 5. a measuring instrument; 6. a piston rod; 61. a piston rod head; 7. and (5) a pull rod.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 to 6 show an embodiment of an auxiliary measuring tool for the displacement of a piston rod of a hydraulic steering engine of a helicopter, which comprises a fastening plate 1, a measuring plate 2 and a supporting member 4, wherein the measuring plate 2 is positioned above the fastening plate 1 and hinged with the fastening plate 1, one end of the fastening plate 1 is provided with a fastening end 11, the other end of the fastening plate is provided with a first supporting end, one end of the measuring plate 2 is provided with a stretching-in end 21, the other end of the measuring plate is provided with a second supporting end, the supporting member 4 for adjusting the distance is arranged between the first supporting end and the second supporting end, the fastening end 11 and the stretching-in end 21 are positioned on the same side of a hinged position, and the supporting member 4 is positioned on the other side of the hinged position.
The supporting member 4 is used for supporting the fastening plate 1 and the measuring plate 2 to clamp the piston rod 6 to be measured, the original tools such as a spanner are replaced, the fastening screw and the nut are screwed, the piston rod 6 to be measured is clamped, the original friction force is replaced, the direct clamping is achieved, and the disassembly and assembly process is more convenient. The piston rod 6 to be measured is better protected without affecting the performance of the system. The original fastening force perpendicular to the movement direction of the piston rod 6 is replaced by the fastening force identical to the movement direction of the piston rod 6, so that the fastening effect is improved, and the measurement accuracy is further improved.
Further, in the present embodiment, the spreader 4 is a fastening screw, and the fastening screw includes a nail head 41 and a screw rod 42, and the screw rod 42 abuts against the first spreading end after passing through the threaded hole 22. The nail head 41 is enlarged in size, knurling is carried out on the head control surface, torque during screwing is increased, fastening force is increased, enough strength is provided between the fastening screw and the measuring plate 2 for ensuring the fastening force, the position where the fastening screw is installed is thickened, and the length of the matched screw is increased for ensuring the strength.
Further, in the present embodiment, the fastening end 11 is provided with a U-shaped groove. In this embodiment, a U-shaped groove is preferable, so that the fastening effect is better. In actual use, the shape of the fastening end 11 may be adjusted according to the shape below the piston rod head 61.
Further, in the present embodiment, the projecting end 21 is provided with a chamfer. In this embodiment, the contact surface between the rod head 61 and the extending end 21 is chamfered, and the extending end 21 is chamfered to increase the contact area.
The measuring method of the auxiliary measuring tool for the displacement of the piston rod of the hydraulic steering engine of the helicopter in the embodiment is as follows:
Step one: the fastening screw is screwed out for a certain stroke, at the moment, the distance between the fastening end 11 and the extending end 21 is flexibly adjustable, so that the fastening end 11 and the extending end 21 can be ensured to be smoothly contacted with the piston rod head 61, the extending end 21 extends into a gap between the piston rod head 61 and the pull rod 7, and meanwhile, the U-shaped groove is clamped below the piston rod head 61;
Step two: tightening the fastening screw to be abutted with the first opening end, so that the first opening end and the second opening end are opened, at the moment, the fastening end 11 and the extending end 21 clamp the piston rod head 61, the fastening plate 1 and the measuring plate 2 are in a parallel state, the distance between the fastening plate 1 and the measuring plate 2 when being parallel is equal to the distance between the upper contact surface and the lower contact surface of the piston rod head 61, the contact area is ensured, and the installation is more stable;
Step three: the gauge outfit of the measuring instrument 5 is contacted with the measuring plate 2 for measurement, the fixed point from the measuring point to the tool cannot displace in the measuring process, the measuring plate 2 is made of materials with high strength, difficult deformation and high surface hardness, difficult abrasion, and the piston rod 6 can be accurately measured in the whole stroke, and the measuring instrument 5 is not damaged or cannot be measured.
While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (5)
1. An auxiliary measuring tool for the displacement of a piston rod of a hydraulic steering engine of a helicopter is characterized in that: including mounting plate (1), measuring plate (2) and strut piece (4), measuring plate (2) are located the top of mounting plate (1) and both are articulated, the one end of mounting plate (1) is equipped with fastening end (11), and the other end is equipped with first propping open end, and the one end of measuring plate (2) is equipped with stretches into end (21), and the other end is equipped with the second and struts the end, is equipped with between first propping open end and the second and struts piece (4) that are used for adjusting the interval, fastening end (11) are located the same side of articulated department with stretching into end (21), strut piece (4) are located the opposite side of articulated department.
2. The auxiliary measuring tool for the displacement of the piston rod of the hydraulic steering engine of the helicopter according to claim 1, wherein the auxiliary measuring tool comprises the following components: the second stretching end is provided with a threaded hole (22), the stretching piece (4) is a fastening screw, the fastening screw comprises a nail head (41) and a screw rod (42), and the screw rod (42) passes through the threaded hole (22) and then is abutted to the first stretching end.
3. The auxiliary measuring tool for the displacement of the piston rod of the hydraulic steering engine of a helicopter according to any one of claims 1 or 2, characterized in that: the fastening end (11) is provided with a U-shaped groove.
4. The auxiliary measuring tool for the displacement of the piston rod of the hydraulic steering engine of a helicopter according to any one of claims 1 or 2, characterized in that: the extending end (21) is provided with a chamfer.
5. A measurement method using the auxiliary measuring tool for the displacement of the piston rod of the hydraulic steering engine of a helicopter according to any one of claims 1 to 4, characterized in that:
Step one, adjusting a spreading piece (4), wherein a stretching end (21) stretches into a gap between a piston rod head (61) and a pull rod (7), and a fastening end (11) is positioned below the piston rod head (61);
Step two, adjusting the stretching piece (4) to stretch the first stretching end and the second stretching end, and clamping the piston rod head (61) by the fastening end (11) and the stretching end (21);
And thirdly, the gauge head of the measuring instrument (5) is contacted with the measuring plate (2) for measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010746412.5A CN111891383B (en) | 2020-07-29 | 2020-07-29 | Auxiliary measuring tool and measuring method for displacement of piston rod of hydraulic steering engine of helicopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010746412.5A CN111891383B (en) | 2020-07-29 | 2020-07-29 | Auxiliary measuring tool and measuring method for displacement of piston rod of hydraulic steering engine of helicopter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111891383A CN111891383A (en) | 2020-11-06 |
| CN111891383B true CN111891383B (en) | 2024-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010746412.5A Active CN111891383B (en) | 2020-07-29 | 2020-07-29 | Auxiliary measuring tool and measuring method for displacement of piston rod of hydraulic steering engine of helicopter |
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| CN (1) | CN111891383B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670164B (en) * | 2021-10-25 | 2021-12-31 | 莱州亚通重型装备有限公司 | Plunger stroke measuring device for single high-pressure oil pump of diesel engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107932364A (en) * | 2017-11-28 | 2018-04-20 | 国网浙江省电力公司绍兴供电公司 | A kind of GIS bayonet joints Special clamping instrument |
| CN110792656A (en) * | 2019-11-13 | 2020-02-14 | 国家康复辅具研究中心 | Hydraulic cylinder testing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6874217B2 (en) * | 2003-01-09 | 2005-04-05 | Lisle Corporation | Disc brake pad spreading tool |
| CN201311342Y (en) * | 2008-11-07 | 2009-09-16 | 湖南大学 | Combined vehicle body-in-white dynamic static performance flexible comprehensive test system |
| CN204357842U (en) * | 2014-12-12 | 2015-05-27 | 武汉理工大学 | A kind of oil hydraulic cylinder displacement signal being applicable to engineering machinery detects auxiliary device |
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2020
- 2020-07-29 CN CN202010746412.5A patent/CN111891383B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107932364A (en) * | 2017-11-28 | 2018-04-20 | 国网浙江省电力公司绍兴供电公司 | A kind of GIS bayonet joints Special clamping instrument |
| CN110792656A (en) * | 2019-11-13 | 2020-02-14 | 国家康复辅具研究中心 | Hydraulic cylinder testing device |
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| Publication number | Publication date |
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| CN111891383A (en) | 2020-11-06 |
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