CN114199578A - Adjustable inclination angle type hydraulic rack device for engine test - Google Patents
Adjustable inclination angle type hydraulic rack device for engine test Download PDFInfo
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- CN114199578A CN114199578A CN202111342853.XA CN202111342853A CN114199578A CN 114199578 A CN114199578 A CN 114199578A CN 202111342853 A CN202111342853 A CN 202111342853A CN 114199578 A CN114199578 A CN 114199578A
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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
Abstract
The invention discloses an adjustable inclination angle type hydraulic rack device for engine testing, which comprises a supporting rack device, a hydraulic power device and an inclination angle display and control device. The hydraulic power device provides power for the support rack device, and a position sensor on the support rack device is in signal connection with the inclination angle display and control device; the inclination angle display and control device controls the action of the hydraulic power device, and the three devices jointly realize the adjustment of the inclination angle of the engine test bench device. The invention provides an adjustable inclination angle type hydraulic rack device for engine test aiming at the actual running state of an engine, which can realize the running state of the engine under different inclination angles, simulate real environmental conditions and provide necessary environmental conditions for the research and development and the test of the engine.
Description
Technical Field
The invention relates to an engine testing device, in particular to an adjustable inclination angle type hydraulic rack device for engine testing.
Background
In the whole life cycle of product development, prototype trial-manufacturing, experimental research, factory inspection and the like, various types of performance tests are required to be carried out on a test bench to verify whether various performance indexes of the engine meet the design requirements. The engine test is performed by touching and verifying on a real environment platform, so that the engine test bench is very important.
The traditional rack is used for fixing an engine to be tested on an adjustable support and then fixing the adjustable support on an iron bottom plate of a laboratory, and the rack is complex in centering work, low in efficiency and poor in accuracy.
Chinese patent document CN 102645338A discloses an engine test bench device, which fixes a trolley positioning guide mechanism and a trolley hold-down mechanism on an iron bottom plate in an engine test chamber, and a support leg is installed on a trolley tray, so that an engine to be tested can be fixed in advance on the engine test bench device, centered and then enter the test chamber to be bench-built, thereby improving the working efficiency and improving the centering accuracy of a piece to be tested. The gantry arrangement of the document does not simulate the performance of the engine under real conditions.
For the real engine performance under the road working condition with variable reaction, a bench device is needed to be provided to simulate the real environmental condition and provide the necessary environmental condition for the research and development and the test of the engine.
Disclosure of Invention
The invention aims to provide an adjustable inclination angle type hydraulic rack device for engine testing, which is used for simulating changeable road working condition environments.
The invention provides an adjustable inclination angle type hydraulic rack device for engine testing, which comprises a supporting rack device, a hydraulic power device and an inclination angle display and control device, wherein the supporting rack device mainly comprises a supporting platform, two adjusting slide rails, four position sensors, four hydraulic rod main bodies and four supporting feet, the hydraulic power device is used for controllably providing power oil liquid for the four hydraulic rod main bodies respectively, and the inclination angle display and control device is in signal connection with the four position sensors and is used for detecting inclination angle information of the supporting platform and controlling the heights of the four hydraulic rod main bodies through the hydraulic power device according to the fed-back inclination angle information so as to enable the supporting platform to move to a required inclination angle.
The hydraulic power device provides hydraulic power for the support rack device, and the position sensor on the support rack device is communicated with the inclination angle display and control device through a signal line; the inclination angle display and control device controls the action of the hydraulic power device, the three devices jointly realize the adjustment of the inclination angle of the engine test bench device, and the running state of the engine under different inclination angles is realized, so that the real environmental conditions are simulated, and necessary conditions are provided for the research, development and test of the engine.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an adjustable-rake hydraulic bench apparatus for engine testing according to the present invention;
FIG. 2 is a schematic structural view of a support stand apparatus according to the present invention;
FIG. 3 is a schematic cross-sectional view of the structure of a support stand apparatus according to the present invention;
FIG. 4 is a schematic structural diagram of a hydraulic power unit according to the present invention;
FIG. 5 is a schematic structural diagram of a tilt display control device according to the present invention;
FIG. 6 is a schematic diagram comparing before and after the tilt adjustment;
FIG. 7 is a control flow chart for testing an adjustable-inclination hydraulic bench device for engine testing according to the present invention;
FIG. 8 is
Description of the reference numerals
100-support bench device, 101-support platform, 102-mounting seat, 103-center positioning plate, 104-positioning T-shaped groove, 105-position sensor, 106-hydraulic rod main body, 107-support foot, 108-signal line terminal, 109-hydraulic pipe interface, 110-ascending regulating valve, 111-electromagnetic reversing valve and 112-descending regulating valve; 200-hydraulic power unit, 201-oil outlet, 202-oil return port, 203-pressure regulator, 204-oil filter, 205-hydraulic pump, 206-motor, 207-oil pressure gauge; 300-an inclination angle display and control device, 301-an operation and control platform, 302-a state display interface and 303-an operation and control handle.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, the adjustable inclination angle type hydraulic bench device for engine testing of the present invention includes a support bench device 100, a hydraulic power device 200 and an inclination angle display and control device 300, wherein the hydraulic power device 200 is communicated with the support bench device through an oil path, the hydraulic power device 200 provides power for the support bench device 100, a position sensor 105 is installed on the support bench device 100, and the position sensor 105 is communicated with the inclination angle display and control device 300 through a signal line; the inclination angle display and control device 300 is communicated with the hydraulic power device 200 through a signal line and is used for controlling the action of the hydraulic power device 200.
The support bench device 100 is formed by combining 1 support platform 101, 2 adjusting slide rails 102, 4 position sensors 105, 4 hydraulic rod bodies 106 and 4 support feet 107.
The hydraulic power unit 200 includes an oil outlet 201, an oil return port 202, a pressure regulator 203, an oil filter 204, a hydraulic pump 205, an electric motor 206, and an oil pressure gauge 207.
The tilt display and control device 300 comprises a control platform 301, a state display interface 302 and a control handle 303.
A central positioning plate 103 is arranged at the central position of the supporting platform 101, and a plurality of positioning T-shaped grooves 104 arranged towards the outer side of the supporting platform 101 are formed in both sides of the central positioning plate. The positioning T-shaped grooves 104 are symmetrically arranged from the center to two sides, two positioning slide rails 102 are mounted on the positioning T-shaped grooves and used for mounting and positioning an engine test piece, and the positioning slide rails 102 are mounted in the positioning T-shaped grooves 104.
The support stand device 100 includes an up-regulation valve 110 and a down-regulation valve 112, the hydraulic pump 205 is connected to the hydraulic rod main body 106 through the up-regulation valve 110 or the down-regulation valve 112, the up-regulation valve 110 is used for regulating the up-height of the support stand device 100, the down-regulation valve 112 is used for regulating the down-height of the support stand device 100, and the tilt angle regulation of the hydraulic stand device is realized by 4 hydraulic rod height differences.
Four sets of hydraulic pipelines are connected between the hydraulic power device 200 and the four hydraulic adjusting rod main bodies 106, and the pipelines are sequentially connected with an oil return port 202, an oil filter 204, a hydraulic pump 205, a pressure regulator 203, an oil pressure gauge 207 and an oil outlet 201; the medium oil providing the adjusting power returns to the hydraulic power device 200 from the hydraulic rod through the oil return port 202, is filtered by the oil filter 204, is removed of impurities and sucked into the hydraulic pump 205, is adjusted in outlet pressure of the hydraulic pump 205 through the pressure regulator 203, and is sent to the hydraulic rod main body 106 through the oil outlet 201.
The lower parts of the four top angles of the support rack device 100 are respectively provided with a position sensor 105, such as an infrared distance sensor, the sensor signals are collected to a signal line terminal 108 through a signal line, the signal line terminal 108 transmits the sensor signals to the inclination angle display and control device 300, the processed distance and inclination angle signals are displayed on a state display interface 302, and the inclination angle display and control device 300 controls the hydraulic power device 200 after data processing, so as to adjust the hydraulic rod main body 106.
The inclination angle display and control device 300 is in signal communication with the hydraulic power device 200 and is used for controlling the operation of the hydraulic power device 200. The hydraulic power device 200 processes the signals of the inclination angle display and control device 300 and controls the running state of the hydraulic pump and the opening and closing of the ascending regulating valve and the descending regulating valve.
The inclination angle display and control device 300 has two adjusting modes:
s1, automatically adjusting the inclination state of the support stand device 100 by inputting the inclination angle information;
s2, the tilt state of the support stand device 100 is manually adjusted by manually controlling the four position adjustment handles 303.
Examples are listed below:
(1) transverse inclination angle theta alpha
Adjusting the height of the a and b columns to be constant, i.e. height sensor H1＝H2＝h1Synchronously adjusting c and d to make H3＝H4＝h2Wherein the four height sensor phase positions are squares of side length L, wherein sin θ α ═ h2-h1) L, so θ α ═ arcsin [ (h)2-h1)/L]Through the corresponding relation, after inclination information is input, the height of the four hydraulic rod main bodies is regulated and controlled through signal regulation and control of the position sensor: h1＝H2＝h1，H3＝H4＝h1+ L × sin θ α, the target tilt angle is achieved.
(2) Longitudinal inclination angle theta alpha
Adjusting the height of the a and c columns to be constant, i.e. the height sensor H1＝H3＝h3Synchronously adjusting b and d to make H2＝H4＝h4Wherein the four height sensor phase positions are squares of side length L, wherein sin θ α ═ h4-h3) L, so θ α ═ arcsin [ (h)4-h3)/L]Through the corresponding relation, after inclination information is input, the height of the four hydraulic rod main bodies is regulated and controlled through signal regulation and control of the position sensor: h1＝H3＝h3，H2＝H4＝h3+ L × sin θ α, the target tilt angle is achieved.
(3) Inclination angle theta alpha of space plane
The input adjustment inclination angle is θ α, as shown in fig. 8, in the tetrahedron O-ABC, the point a is crossed to P as AP ═ plane OBC, OP is connected, P is crossed to C '. quadrature.c, C ' is connected, AC ' is connected, so that ═ AOP is the included angle between the straight line AO and the plane OBC, i.e. the line-plane angle θ ^ 0, and ^ AC ' P is the plane angle of the dihedral angle a-OC-B, i.e. the angle C, and ^ AOC ' is ^ 1. In the rectangular Δ AOP, sin θ ═ 2 is OP/OA, and according to the theorem of plane angle, sin θ α ═ sinCsin × 3 is known. Thus, the tilt angle θ α ═ arcsin (sinCsin ≠ 4) is adjusted. Net height H where angle β and angle C are both measured by four position sensors1、H2、H3、H4Calculation decision, where H4The height is constant, and A in FIG. 8 is the highest point, which can be considered as H in FIG. 6(b)2Since O in FIG. 8 is the lowest point and can be considered as H4 in FIG. 6(b), OA has a length LOAL sin45 ° where AC' has a length LAC’＝H2-H4Δ OAC' is a right triangle, and sin β ═ AC ═ L can be known from the pythagorean theoremAC’/LOA＝(H2-H4) /(L sin45 °); delta APC' is a right triangle, and according to the Pythagorean theorem, sinC ═ AP/AC ═ LAP/LAC’＝LOA*sinθα/(H2-H4) Then sin θ α is sinCsin β. The difference value H between the highest point and the lowest point can be obtained through the iterative calculation result of the relational expression2-H4And the beta angle and the C angle, so that the heights of the four hydraulic rod main bodies are regulated and controlled through signal regulation and control of the position sensor.
Through the adjustment mode, the hydraulic power device provides power for the support rack device, and the position sensor on the support rack device is communicated with the inclination angle display and control device through a signal line; the inclination angle display and control device controls the action of the hydraulic power device, the three devices jointly realize the adjustment of the inclination angle of the engine test bench device, and realize the running states of the engine under different inclination angles, as shown in fig. 6, the schematic diagram is a comparison schematic diagram before and after the adjustment of the inclination angle.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An adjustable inclination angle type hydraulic bench device for engine test is characterized by comprising a support bench device (100), a hydraulic power device (200) and an inclination angle display and control device (300),
the supporting rack device (100) mainly comprises a supporting platform (101), two adjusting slide rails (102), four position sensors (105), four hydraulic rod main bodies (106) and four supporting feet (107),
the hydraulic power device (200) is used for providing power oil liquid for each of the four hydraulic rod main bodies (106) in a controllable mode,
the inclination angle display and control device (300) is in signal connection with the four position sensors (105) and is used for detecting inclination angle information of the supporting platform (101), and controlling the heights of the four hydraulic rod main bodies (106) through the hydraulic power device (200) according to the fed back inclination angle information so as to enable the supporting platform to move to a required inclination angle.
2. The adjustable rake hydraulic mount apparatus for engine testing according to claim 1, wherein the hydraulic power unit (200) includes an oil outlet (201), an oil return (202), a pressure regulator (203), an oil filter (204), a hydraulic pump (205), an electric motor (206), and an oil pressure gauge (207).
3. The adjustable inclination type hydraulic bench device for the engine test according to claim 1, wherein the inclination display and control device (300) comprises a control platform (301), a state display interface (302) and a control handle (303).
4. The adjustable inclination angle type hydraulic bench device for engine test according to claim 1, characterized in that a center positioning plate (103) is arranged at the center of the supporting platform (101), and a plurality of positioning T-shaped grooves (104) arranged towards the outer side of the supporting platform (101) are formed on both sides of the center positioning plate. The positioning T-shaped groove (104) is symmetrically arranged from the center to two sides, two positioning slide rails (102) are mounted on the positioning T-shaped groove and used for mounting and positioning an engine test piece, and the positioning slide rails (102) are mounted in the positioning T-shaped groove (104).
5. The adjustable inclination type hydraulic bench device for the engine test according to claim 1, characterized in that the position sensors (105) are mounted at the lower parts of the four top corners of the support bench device (100), the sensor signals are collected to the signal line terminals (108) through signal lines, the signal line terminals transmit the sensor signals to the inclination angle display and control device (300), the processed distance and inclination angle signals are displayed on the state display interface (302), and the inclination angle display and control device (300) controls the hydraulic power device (200) after data processing, so as to adjust the hydraulic rod main body (106).
6. The adjustable inclination type hydraulic bench device for engine test according to claim 1, wherein the support bench device (100) further comprises an ascending regulating valve (110) and a descending regulating valve (112), the hydraulic pump (205) is connected to the hydraulic rod main body (106) through the ascending regulating valve (110) or the descending regulating valve (112), the ascending regulating valve (110) is used for regulating the ascending height of the support bench device (100), the descending regulating valve (112) is used for regulating the descending height of the support bench device (100), and the inclination adjustment of the hydraulic bench device is realized through the height difference of four hydraulic rods.
7. The adjustable inclination type hydraulic bench device for engine testing according to claim 1, wherein four sets of hydraulic pipelines are connected between the hydraulic power device (200) and the four hydraulic adjusting rod main bodies (106), and the pipelines are sequentially connected with an oil return port (202), an oil filter (204), a hydraulic pump (205), a pressure regulator (203), an oil pressure gauge (207) and an oil outlet (201); the medium oil providing the adjusting power returns to the hydraulic power device (200) from the hydraulic rod through the oil return port (202), is filtered by the oil filter (204), is removed of impurities and is sucked into the hydraulic pump (205), and is sent to the hydraulic rod main body (106) from the oil outlet (201) after the outlet pressure of the hydraulic pump (205) is adjusted by the pressure regulator (203).
8. The adjustable inclination angle type hydraulic bench device for engine test as claimed in claim 1, characterized in that said inclination angle display and control device (300) has two adjustment modes:
s1, automatically adjusting the inclination state of the support stand device (100) by inputting the inclination angle information;
s2, the four position adjusting handles (303) are manually controlled to manually adjust the inclination state of the support stand device (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111342853.XA CN114199578A (en) | 2021-11-12 | 2021-11-12 | Adjustable inclination angle type hydraulic rack device for engine test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111342853.XA CN114199578A (en) | 2021-11-12 | 2021-11-12 | Adjustable inclination angle type hydraulic rack device for engine test |
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| CN114199578A true CN114199578A (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111342853.XA Pending CN114199578A (en) | 2021-11-12 | 2021-11-12 | Adjustable inclination angle type hydraulic rack device for engine test |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849051A (en) * | 2014-12-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Engine docking test dolly for bench test and bench test system |
| CN104880317A (en) * | 2015-05-22 | 2015-09-02 | 南京航空航天大学 | Aviation piston engine inclination test apparatus and operating method |
| CN105510030A (en) * | 2016-01-25 | 2016-04-20 | 徐州徐工传动科技有限公司 | Engineering machinery gearbox inclining test system and test method thereof |
| CN213239473U (en) * | 2020-09-02 | 2021-05-18 | 科曼车辆部件系统(苏州)有限公司 | Test bench and test system comprising same |
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2021
- 2021-11-12 CN CN202111342853.XA patent/CN114199578A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849051A (en) * | 2014-12-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Engine docking test dolly for bench test and bench test system |
| CN104880317A (en) * | 2015-05-22 | 2015-09-02 | 南京航空航天大学 | Aviation piston engine inclination test apparatus and operating method |
| CN105510030A (en) * | 2016-01-25 | 2016-04-20 | 徐州徐工传动科技有限公司 | Engineering machinery gearbox inclining test system and test method thereof |
| CN213239473U (en) * | 2020-09-02 | 2021-05-18 | 科曼车辆部件系统(苏州)有限公司 | Test bench and test system comprising same |
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