CN110702412A - A central test frame for engine thrust test - Google Patents
A central test frame for engine thrust test Download PDFInfo
- Publication number
- CN110702412A CN110702412A CN201911175894.7A CN201911175894A CN110702412A CN 110702412 A CN110702412 A CN 110702412A CN 201911175894 A CN201911175894 A CN 201911175894A CN 110702412 A CN110702412 A CN 110702412A
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- engine
- guide rod
- test
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- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 238000009434 installation Methods 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 7
- 208000034656 Contusions Diseases 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 230000000712 assembly Effects 0.000 abstract description 6
- 238000000429 assembly Methods 0.000 abstract description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0038—Force sensors associated with force applying means applying a pushing force
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/13—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the tractive or propulsive power of vehicles
- G01L5/133—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the tractive or propulsive power of vehicles for measuring thrust of propulsive devices, e.g. of propellers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Ocean & Marine Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a central test frame for engine thrust test, which comprises a base and a force bearing pier fixedly arranged at one end of the base; the front end of the bearing pier is provided with a bearing rod assembly, and the rear end of the bearing pier is connected with the force transducer through a connecting screw; an engine is arranged behind the force measuring sensor, and a force measuring assembly is arranged between the transmitter and the force measuring sensor; the engine is arranged on the movable frame, two ends of the movable frame are sleeved on the guide rod assemblies, and the lower ends of the guide rod assemblies are fixedly arranged on the base through the bearing rods; the bottom of the movable frame is connected with the lower part of the bearing pier through a pre-tightening assembly; the engine thrust test system can be used for carrying out thrust test on the engine, is suitable for carrying out thrust test on engines of different models, obtains more accurate test data, and is very safe and efficient in the whole test process.
Description
Technical Field
The invention belongs to the technical field of propeller testing devices, and particularly relates to a central test stand for engine thrust testing.
Background
Along with the development of science and technology, the engines of different types are continuously increased, and the existing test tool of a thrust test room cannot meet the thrust test requirement of a new product.
Disclosure of Invention
The invention aims to solve the problems, and provides a central test frame for engine thrust test, which can perform thrust test on an engine, is suitable for the thrust test of engines of different models, obtains more accurate test data, and is very safe and efficient in the whole test process.
In order to realize the purpose, the invention adopts the technical scheme that: a central test frame for engine thrust test comprises a base 13 and a force bearing pier 2 fixedly arranged at one end of the base 13; the front end of the bearing pier 2 is provided with a bearing rod assembly 1, and the rear end of the bearing pier 2 is connected with a force transducer 4 through a connecting screw 3; an engine 8 is arranged behind the force measuring sensor 4, and a force measuring assembly 5 is arranged between the transmitter 8 and the force measuring sensor 4; the engine 8 is arranged on the movable frame 6, two ends of the movable frame 6 are sleeved on the guide rod assemblies 7, and the lower ends of the guide rod assemblies 7 are fixedly arranged on the base 13 through the bearing rods 14; the bottom of the movable frame 6 is connected with the lower part of the force bearing pier 2 through a pre-tightening component 12.
Further, the base 13 includes an upper plate and a lower plate; a U-shaped groove convenient for the installation and fixation of the base 13 is arranged on the lower bottom plate; hanging rings 15 for transferring the central test rack are arranged at four corners of the lower bottom plate; the upper base plate is provided with a positioning groove and a positioning hole which are convenient for the adjustment and fixation of the bearing pier 2.
Further, the four corners of the base 13 are provided with round corners for avoiding damage.
Further, a positioning table is arranged at the bottom of the bearing pier 2; the positioning table is matched with the positioning groove of the upper bottom plate.
Further, the guide rod assembly 7 consists of a guide rod and a guide rod screw; the surface of the guide rod is provided with a groove convenient for limiting with the force bearing pier 2; the guide rod screws are fixedly arranged at two ends of the guide rod.
Further, the movable frame 6 comprises a U-shaped chute 16, and two ends of the U-shaped chute 16 are sleeved on the guide rod assembly 7 and movably connected with the guide rod assembly; an upper embracing ring 10 and a lower embracing ring 11 are arranged in the middle of the U-shaped sliding groove 16; the upper embracing ring 10 and the two ends 11 of the lower embracing ring are connected through an embracing ring positioning table and are fixedly arranged at the two ends of the U-shaped sliding groove 16; the upper embracing ring 10 and the lower embracing ring 11 are enclosed into a contour matched with the contour of the outer edge of the cross section of the engine 8.
Further, the inner sides of the upper embracing ring 10 and the lower embracing ring 11 are provided with embracing ring grooves, and the embracing ring grooves are internally provided with clamping rings 9.
Further, the force measuring assembly 5 consists of a transition frame, a connecting flange and a corresponding joint, and is consistent with the axis of the engine 8; the front end of the transition frame and the head of the force cell 4 form concave surface and convex surface contact matching.
Further, the pre-tightening assembly 12 consists of a spring and a screw rod; the spring is sleeved on the screw rod, and two ends of the screw rod are respectively arranged on the bearing pier 2 and the movable frame 6.
The invention has the beneficial effects that:
1. the invention can carry out thrust test on the engine; the whole engine and the test stand are consistent in the axis direction, small in deformation and reliable in locking; after the engine is fixed, the engine can freely slide on the guide rod of the test stand. Engines of different types, lengths and sizes can be tested.
2. In the invention, the middle and lower bottom plates of the base are designed into U-shaped grooves, which is convenient for the installation and fixation of the base; meanwhile, 4 lifting rings are designed on the side surface and used for transferring the central test frame; the locating slot and the locating hole are evenly processed on the upper base plate, so that the force bearing pier is convenient to adjust and fix, the engine fixing device is suitable for engines with different lengths, and finally the base is subjected to fillet treatment all around to avoid damage.
3. The movable frame can freely slide back and forth on the guide rod, and the bearing pier can also be adjusted back and forth, so that the engine tests with different lengths can be met. In order to ensure the position precision requirement of the bearing pier, a positioning table is designed at the bottom; when the device is installed, the device is matched with a positioning groove of a base to ensure the requirement of position degree; the guide rod component consists of a guide rod and a guide rod screw, and the guide rod is processed to meet the required requirements. The surface of the guide rod is also provided with a groove, so that the guide rod is convenient to limit with the bearing pier. The guide rod screw is fixed at one end of the guide rod, and the main function of the guide rod screw is used for mounting and limiting the movable frame assembly.
4. In the invention, the U-shaped sliding groove, the upper holding ring, the lower holding ring and the clamping ring form the whole movable frame which is used for fixing the engine. The U-shaped sliding groove is internally provided with a linear bearing in a designed way, and can move along the axial direction lightly and quickly. The embracing ring is divided into an upper part and a lower part which are fixed on the U-shaped sliding groove. In order to prevent the position error of the front and rear hoops in the installation process, a hooping positioning table is designed on the U-shaped sliding groove to ensure the installation error. The inner side of the hoop is provided with a hoop groove, the clamping ring is clamped in the hoop groove to fix the engine, and the clamping ring can be matched according to different diameters of the engine.
5. In the invention, the bearing pier is an integral workpiece, and the bottom of the bearing pier is provided with a limiting boss which is matched with the base and fixed on the base by a bolt. The front end is provided with a bearing rod component which can be adjusted to prop against the bearing wall of the test bed for bearing the thrust generated by the engine. The rear end is provided with a force transducer which is fixed on the force bearing pier and used for testing thrust. The load cells have different specifications and different installation apertures. The installation of different sensors is convenient, and the connecting screw can be replaced.
6. In the present invention, the force measuring assembly is mounted on the engine head, which is the medium between the engine and the sensor. It is consistent with the axis of the engine, has small deformation and reliable locking. (these three parts are to be made according to the diameter of the engine). The front end of the transition frame is in concave and convex contact with the head of the force transducer, so that the consistency of the axis is improved, and the test data is more accurate.
7. In the invention, the engine can generate large thrust at the moment of ignition, and the instantaneous acceleration is large. The pre-tightening component gives a forward pulling force to the engine before the engine is tested, so that the mutual surface contact and the consistency of the axes of the force measuring component and the force measuring sensor are ensured, and the engine and the central test frame are integrated. The impact of the engine on the central test stand at the moment of ignition is reduced, so that the safety performance and the accuracy of data are improved.
Drawings
FIG. 1 is a schematic front view of the apparatus of the present invention.
FIG. 2 is a left side view of the apparatus of the present invention.
FIG. 3 is a schematic top view of the apparatus of the present invention.
Fig. 4 is a schematic structural diagram of the movable frame 6 in the device of the present invention.
Fig. 5 is a schematic cross-sectional view of a-a in fig. 4.
Fig. 6 is a schematic structural view of a force bearing pier 2 in the device.
In the figure: 1. a force bearing rod assembly; 2. bearing piers; 3. a connecting screw; 4. a force sensor; 5. a force measuring assembly; 6. moving the frame; 7. a guide bar assembly; 8. an engine; 9. a collar; 10. an upper embracing ring; 11. a lower embracing ring; 12. a pre-tightening assembly; 13. a base; 14. a force bearing rod; 15. a hoisting ring; 16. u-shaped sliding chutes.
Detailed Description
The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
As shown in fig. 1 to 6, the specific structure of the present invention is: a central test frame for engine thrust test comprises a base 13 and a force bearing pier 2 fixedly arranged at one end of the base 13; the front end of the bearing pier 2 is provided with a bearing rod assembly 1, and the rear end of the bearing pier 2 is connected with a force transducer 4 through a connecting screw 3; an engine 8 is arranged behind the force measuring sensor 4, and a force measuring assembly 5 is arranged between the transmitter 8 and the force measuring sensor 4; the engine 8 is arranged on the movable frame 6, two ends of the movable frame 6 are sleeved on the guide rod assemblies 7, and the lower ends of the guide rod assemblies 7 are fixedly arranged on the base 13 through the bearing rods 14; the bottom of the movable frame 6 is connected with the lower part of the force bearing pier 2 through a pre-tightening component 12.
For further optimization of the base, the base 13 comprises an upper base plate and a lower base plate; a U-shaped groove convenient for the installation and fixation of the base 13 is arranged on the lower bottom plate; hanging rings 15 for transferring the central test rack are arranged at four corners of the lower bottom plate; the upper base plate is provided with a positioning groove and a positioning hole which are convenient for the adjustment and fixation of the bearing pier 2.
Preferably, the four corners of the base 13 are provided with round corners for avoiding damage.
Preferably, the bottom of the bearing pier 2 is provided with a positioning table; the positioning table is matched with the positioning groove of the upper bottom plate.
In order to optimally limit and install the guide rod assembly, the guide rod assembly 7 consists of a guide rod and a guide rod screw; the surface of the guide rod is provided with a groove convenient for limiting with the force bearing pier 2; the guide rod screws are fixedly arranged at two ends of the guide rod.
In order to improve the fixing effect of the engine 8, the movable frame 6 comprises a U-shaped chute 16, and two ends of the U-shaped chute 16 are sleeved on the guide rod assembly 7 and movably connected with the guide rod assembly; an upper embracing ring 10 and a lower embracing ring 11 are arranged in the middle of the U-shaped sliding groove 16; the upper embracing ring 10 and the two ends 11 of the lower embracing ring are connected through an embracing ring positioning table and are fixedly arranged at the two ends of the U-shaped sliding groove 16; the upper embracing ring 10 and the lower embracing ring 11 are enclosed into a contour matched with the contour of the outer edge of the cross section of the engine 8.
Preferably, the inner sides of the upper embracing ring 10 and the lower embracing ring 11 are provided with embracing ring grooves, and the embracing ring grooves are internally provided with clamping rings 9.
In order to improve the consistency of the axes and enable the test data to be more accurate, the force measuring assembly 5 consists of a transition frame, a connecting flange and a corresponding joint and is consistent with the axis of the engine 8; the front end of the transition frame and the head of the force cell 4 form concave surface and convex surface contact matching.
In order to reduce the impact of the engine 8 on the central test stand at the moment of ignition, the pre-tightening assembly 12 consists of a spring and a screw rod; the spring is sleeved on the screw rod, and two ends of the screw rod are respectively arranged on the bearing pier 2 and the movable frame 6.
When the device works: the central test frame is fixed on a workbench, and then the bearing rod assembly is adjusted to be dead against the bearing wall. The engine is fixed on the movable frame by the clamping ring and the embracing ring to form a whole body which can freely slide in the axis direction of the guide rod. The force measuring assembly is arranged at the head of the engine and is in contact with the head of the force measuring sensor through the pre-tightening assembly, so that the lock cannot be locked too tightly and is in slight contact. The engine can generate forward thrust to act on the force-measuring sensor during testing. The load cell outputs data which is received and read by the computer.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (9)
1. A central test frame for engine thrust test is characterized by comprising a base (13) and a force bearing pier (2) fixedly arranged at one end of the base (13); the front end of the bearing pier (2) is provided with a bearing rod assembly (1), and the rear end of the bearing pier (2) is connected with a force transducer (4) through a connecting screw (3); an engine (8) is arranged behind the force measuring sensor (4), and a force measuring assembly (5) is arranged between the transmitter (8) and the force measuring sensor (4); the engine (8) is arranged on the movable frame (6), two ends of the movable frame (6) are sleeved on the guide rod assembly (7), and the lower end of the guide rod assembly (7) is fixedly arranged on the base (13) through the bearing rod (14); the bottom of the movable frame (6) is connected with the lower part of the bearing pier (2) through a pre-tightening component (12).
2. A central test stand for engine thrust tests according to claim 1, characterized in that said base (13) comprises an upper and a lower base plate; the lower bottom plate is provided with a U-shaped groove which is convenient for the installation and fixation of the base (13); hanging rings (15) for transferring the central test rack are arranged at four corners of the lower bottom plate; the upper base plate is provided with a positioning groove and a positioning hole which are convenient for the adjustment and fixation of the bearing pier (2).
3. The central test stand for the thrust test of an engine according to claim 2, characterized in that the four corners of the base (13) are provided with rounded corners for avoiding bruising.
4. The central test frame for the thrust test of the engine as claimed in claim 3, characterized in that the bottom of the force bearing pier (2) is provided with a positioning table; the positioning table is matched with the positioning groove of the upper bottom plate.
5. The central test stand for the thrust test of engines according to claim 1, characterized in that the guide rod assembly (7) consists of a guide rod and a guide rod screw; the surface of the guide rod is provided with a groove convenient for limiting with the bearing pier (2); the guide rod screws are fixedly arranged at two ends of the guide rod.
6. The central test frame for the thrust test of the engine according to claim 1, wherein the movable frame (6) comprises a U-shaped sliding groove (16), and two ends of the U-shaped sliding groove (16) are sleeved on the guide rod component (7) and movably connected with the guide rod component; an upper embracing ring (10) and a lower embracing ring (11) are arranged in the middle of the U-shaped sliding groove (16); the upper embracing ring (10) and the two ends (11) of the lower embracing ring are connected through an embracing ring positioning table and fixedly arranged at the two ends of the U-shaped sliding groove (16); the upper embracing ring (10) and the lower embracing ring (11) enclose a contour to match with the contour of the outer edge of the cross section of the engine (8).
7. The central test frame for the thrust test of the engine according to claim 6, wherein the inner sides of the upper and lower clasps (10, 11) are provided with clasping grooves, and the clasping grooves are internally provided with clamping rings (9).
8. A central test stand for engine thrust tests according to claim 1, characterized in that said load-measuring assembly (5) consists of a transition frame, a connecting flange and a corresponding joint, and is kept in line with the engine (8) axis; the front end of the transition frame and the head of the force measuring sensor (4) form concave surface and convex surface contact matching.
9. The central test stand for the thrust test of engines according to claim 1, characterized in that the pre-tensioning assembly (12) consists of a spring and a screw; the spring is sleeved on the screw rod, and two ends of the screw rod are respectively arranged on the bearing pier (2) and the movable frame (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911175894.7A CN110702412A (en) | 2019-11-26 | 2019-11-26 | A central test frame for engine thrust test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911175894.7A CN110702412A (en) | 2019-11-26 | 2019-11-26 | A central test frame for engine thrust test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110702412A true CN110702412A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911175894.7A Withdrawn CN110702412A (en) | 2019-11-26 | 2019-11-26 | A central test frame for engine thrust test |
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| Country | Link |
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| CN (1) | CN110702412A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795828A (en) * | 2020-06-05 | 2020-10-20 | 湖北航天技术研究院总体设计所 | Horizontal simulation launch test device and method |
| CN111927653A (en) * | 2020-07-31 | 2020-11-13 | 西安航天动力研究所 | Thrust measuring device for ground test of rotary detonation engine |
| CN114563192A (en) * | 2022-02-10 | 2022-05-31 | 宁波天擎航天科技有限公司 | Solid rocket engine ground test bench and temperature control method |
| CN114923617A (en) * | 2022-07-21 | 2022-08-19 | 中国航发四川燃气涡轮研究院 | Engine lift force measuring device |
| CN116765776A (en) * | 2023-06-30 | 2023-09-19 | 北京新风航天装备有限公司 | Device and method for entering cabin of transverse and vertical mixed equipment |
-
2019
- 2019-11-26 CN CN201911175894.7A patent/CN110702412A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795828A (en) * | 2020-06-05 | 2020-10-20 | 湖北航天技术研究院总体设计所 | Horizontal simulation launch test device and method |
| CN111795828B (en) * | 2020-06-05 | 2022-06-03 | 湖北航天技术研究院总体设计所 | Horizontal simulation launch test device and method |
| CN111927653A (en) * | 2020-07-31 | 2020-11-13 | 西安航天动力研究所 | Thrust measuring device for ground test of rotary detonation engine |
| CN111927653B (en) * | 2020-07-31 | 2021-07-20 | 西安航天动力研究所 | Thrust measuring device for ground test of rotary detonation engine |
| CN114563192A (en) * | 2022-02-10 | 2022-05-31 | 宁波天擎航天科技有限公司 | Solid rocket engine ground test bench and temperature control method |
| CN114923617A (en) * | 2022-07-21 | 2022-08-19 | 中国航发四川燃气涡轮研究院 | Engine lift force measuring device |
| CN116765776A (en) * | 2023-06-30 | 2023-09-19 | 北京新风航天装备有限公司 | Device and method for entering cabin of transverse and vertical mixed equipment |
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Application publication date: 20200117 |
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