CN202403794U - Noise testing device for engine balancing shafts - Google Patents
Noise testing device for engine balancing shafts Download PDFInfo
- Publication number
- CN202403794U CN202403794U CN2011205239025U CN201120523902U CN202403794U CN 202403794 U CN202403794 U CN 202403794U CN 2011205239025 U CN2011205239025 U CN 2011205239025U CN 201120523902 U CN201120523902 U CN 201120523902U CN 202403794 U CN202403794 U CN 202403794U
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- China
- Prior art keywords
- balancing shaft
- shaft
- balancing
- fuel tank
- positioning tool
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- Expired - Lifetime
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Abstract
The utility model discloses a noise testing device for engine balancing shafts, which comprises a base, a work table, a guiding rail, a balancing shaft positioning tooling, a balancing shaft driving device, a balancing shaft fixing device, a noise testing device, a testing assisting balancing shaft and a hydraulic system, wherein the guiding rail is disposed on the work table, the balancing shaft positioning tooling is disposed on the guiding rail in a sliding mode, the hydraulic system is used for providing hydraulic oil with a certain pressure and temperature for a balancing shaft to be tested, the testing assisting balancing shaft is disposed below the balancing shaft positioning tooling, the balancing shaft driving device is arranged in a box body on the right side of the work table, the noise testing device is disposed on the side wall inside the box body, an oil tank for providing the hydraulic oil for the testing assisting balancing shaft is arranged at the position below the work table and corresponds to the noise testing device, and the oil tank is connected with an oil lifting device. The noise testing device for the engine balancing shafts is simple in operation, convenient to use and capable of conveniently and accurately testing performances of the balancing shaft, and has significant influence on improving qualities of balancing shafts.
Description
Technical field
The utility model relates to the mechanical test field, particularly a kind of balance shaft of engine noise proving installation that the performance of balancing shaft is detected.
Background technology
In the working cycle of engine, the movement velocity of piston is very fast, and speed is very inhomogeneous.At last bottom dead center position, the speed of piston is zero, and reaches the highest in last lower dead center position intermediate speed.Because piston is done high-speed straight-line motion repeatedly in cylinder, must on piston, piston pin and connecting rod, produce very big inertial force.At the counterweight that disposes on the connecting rod these inertial force of balance effectively. but the counterweight on the connecting rod only some moving-mass participate in rectilinear motion, another part is participated in rotation.Except last bottom dead center position, various inertial force can not be by complete equipilibrium, the vibration that made engine producing.In order to eliminate vibration, the mode that generally adopts is to increase a balancing shaft to solve.Balance shaft assembly mainly is installed on motor body; The caused amount of unbalance of bent axle piston when being used for the balanced engine high speed rotating; So there is amount of unbalance balancing shaft in itself, along with the rising of rotating speed, because the balance shaft assembly that amount of unbalance causes vibration is inevitable and increasing.Test for the balance shaft assembly monomer both domestic and external seldom normally is installed on this scheme of straightway testing on the motor body with balance shaft assembly, but needs in this scheme to adopt the corresponding motor body of balancing shaft, and volume is too huge.Therefore, the conditional request of place and the test of test than higher, is unfavorable for the performance of balancing shaft is tested fast.
Summary of the invention
The purpose of the utility model is to needing to adopt and the corresponding motor body of balancing shaft in the test that exists in the existing balancing shaft test described in the background technology; Volume is too huge; To place and Test Condition Requirements problem of higher, a kind of balance shaft of engine noise proving installation that can solve foregoing problems is provided.
The technical scheme that can realize aforementioned goal of the invention is following:
A kind of balance shaft of engine noise proving installation; The hydraulic system that it comprises base, worktable, be arranged at guide rail on the worktable, slide and be arranged at balancing shaft positioning tool, balancing shaft drive unit, balancing shaft stationary installation, noise detection device on the guide rail, accompany the examination balancing shaft and the hydraulic oil of certain pressure and temperature is provided for balancing shaft to be measured; Described balancing shaft stationary installation is the cylinder that rotatably compresses that is arranged on the balancing shaft positioning tool; Described below of accompanying the examination balancing shaft to be arranged at the balancing shaft positioning tool; The balancing shaft drive unit is arranged in the casing on worktable right side; Described noise detection device is arranged on the sidewall of box inside; Below worktable, with the corresponding position of noise detection device promising fuel tank of accompanying the examination balancing shaft that hydraulic oil is provided is set, fuel tank is connected with the fuel tank lifting gear, and it is connected balancing shaft positioning tool and driving along the frock drive unit that guide rail moves.
The below that is positioned at noise detection device on the described worktable is provided with travel switch.
Described balancing shaft positioning tool is provided with pilot hole, and described box inside sidewall is provided with and cooperates the positioning cylinder that balancing shaft is positioned with this pilot hole.
Described fuel tank lifting gear comprises the cylinder that is arranged at fuel tank bottom and fuel tank is led and spacing guide rod.
Be provided with well heater and thermometer in the described fuel tank.
Described balancing shaft positioning tool is provided with idle pulley; Idle pulley and balance shaft assembly to be measured and accompany examination balance shaft assembly engagement; Described balancing shaft drive unit is a variable frequency drive motors, and the rotating shaft of idle pulley is connected with the output shaft of this variable frequency drive motors through shaft coupling.
Described frock drive unit is a lead screw transmission mechanism.
To be balance shaft of engine noise proving installation treating when surveying balancing shaft and making an experiment the advantage of the balance shaft of engine noise proving installation of the utility model; Balancing shaft to be measured is assemblied in the upper surface of balancing shaft positioning tool; With accompanying the examination balancing shaft to be assemblied in the lower surface of balancing shaft positioning tool; Be symmetrical set through this, the vertical tremor when balancing out the balancing shaft rotation detects balancing shaft noise condition under certain rotating speed through noise detection device then; Through the standard value of setting, judge whether balancing shaft to be measured is qualified.When making an experiment, adopt earlier work piece hoisting mechanism that balancing shaft to be measured is positioned on the balancing shaft positioning tool, according to idle pulley, balancing shaft to be measured and accompany the alignment marker manual work on the gear on the examination balancing shaft to align; Align through this; Amount of unbalance when balancing out the balancing shaft rotation to greatest extent on vertical direction and the horizontal direction makes testing result more reliable, closes then to be arranged at the outside hatch door of balance shaft of engine noise proving installation; Through rotatably compressing cylinder balancing shaft to be measured is compressed; Make the balancing shaft positioning tool be fed to the below of specifying noise detection device through described frock drive unit, trigger travel switch, the cylinder push-rod of balancing shaft positioning tool top stretches out then; The positioning element of push rod end enters into the pilot hole on the balancing shaft positioning tool, and the balancing shaft positioning tool is positioned.Accompany the examination balancing shaft to immerse in the oil for accompanying the examination balancing shaft to provide the fuel tank of hydraulic oil to rise, making, hydraulic system begins fuel feeding; Variable frequency drive motors low speed rotation then achieves a butt joint with shaft coupling in the idle pulley rotating shaft, then according to test specification; Variable frequency drive motors is to be measured and accompany test specimen to carry out the rotating speed loading; Noise detection device detects the noise that produces when balancing shaft to be measured rotates under certain rotating speed, compares through noise measuring result and standard value, judges whether balancing shaft to be measured is qualified.The main amount of unbalance of horizontal direction and vertical direction made test findings more reliable when the balance shaft of engine noise proving installation of the utility model accompanied the examination balancing shaft to offset the balancing shaft rotation through setting, tested occupation space simultaneously and significantly reduced; The environmental requirement of test also reduces greatly, reduces the difficulty of test greatly, has reduced experimentation cost; Through hatch door is set, experimental enviroment is enclosed in the certain space, avoid the interference of environmental factor; Whole experiment adopts dynamo-electric control automatically, the artificial participation seldom, and automaticity is high; Both practice thrift human resources, improved the efficient and the accuracy rate of test again.
Description of drawings
Fig. 1 is the structural representation of the balancing shaft testing table of the utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is a balance shaft assembly positioning tool synoptic diagram;
Fig. 4 is the Oiltank structure synoptic diagram;
Among the figure, 1 is base, and 2 is worktable, and 3 is guide rail, and 4 is the balancing shaft positioning tool, and 5 is noise detection device; 6 for rotatably compressing cylinder, and 7 is casing, and 8 is fuel tank, and 9 is hydraulic system, and 10 is travel switch, and 11 is pilot hole; 12 is positioning cylinder, and 13 is cylinder, and 14 is guide rod, and 15 is well heater, and 16 is thermometer, and 17 is idle pulley; 18 is the balancing shaft drive unit, and 19 is shaft coupling, and 20 is lead screw transmission mechanism, and 21 is balancing shaft to be measured, and 22 for accompanying the examination balancing shaft.
Embodiment
Referring to figs. 1 through a kind of balance shaft of engine noise proving installation shown in Figure 4; The hydraulic system 9 that it comprises base 1, worktable 2, be arranged at guide rail 3 on the worktable 2, slide and be arranged at balancing shaft positioning tool 4, balancing shaft drive unit 18, balancing shaft stationary installation, noise detection device 5 on the guide rail 3, accompany examination balancing shaft 22 and the hydraulic oil of certain pressure and temperature is provided for balancing shaft 21 to be measured; Described balancing shaft stationary installation is to be arranged to rotatably compress cylinder 6 on the balancing shaft positioning tool 4; Described below of accompanying examination balancing shaft 22 to be arranged at balancing shaft positioning tool 4; Balancing shaft drive unit 18 is arranged in the casing 7 on worktable 2 right sides; Described noise detection device 5 is arranged on the sidewall of casing 7 inboards; Below worktable 2, with noise detection device 5 corresponding positions promising fuel tank 8 of accompanying examination balancing shaft 22 that hydraulic oil is provided is set, fuel tank 8 is connected with fuel tank 8 lifting gears, and it is connected balancing shaft positioning tool 4 and driving along the frock drive unit that guide rail 3 moves.
On the basis of aforementioned schemes, further, for the ease of realizing robotization control, the below that is positioned at noise detection device 5 on the described worktable 2 is provided with travel switch 10; In order when balancing shaft is carried out performance test, to be convenient to balancing shaft positioning tool 4 is fixed; Described balancing shaft positioning tool 4 is provided with pilot hole 11, and described casing 7 inside side walls are provided with and cooperate the positioning cylinder 12 that balancing shaft is positioned with this pilot hole 11; For the ease of the automatically lifting of control fuel tank 8, described fuel tank 8 lifting gears comprise the cylinder 13 that is arranged at fuel tank 8 bottoms and fuel tank 8 are led and spacing guide rod 14; Be provided with well heater 15 and thermometer 16 in the described fuel tank 8; Described balancing shaft positioning tool 4 is provided with idle pulley 17; Idle pulley 17 is with balancing shaft 21 assemblies to be measured and accompany the engagement of examination balancing shaft 22 assemblies; Described balancing shaft drive unit 18 is a variable frequency drive motors, and the rotating shaft of idle pulley 17 is connected with the output shaft of this variable frequency drive motors through shaft coupling 19; Move to the below of noise detection device 5 for the ease of driven equilibrium axle positioning tool 4 along guide rail 3, it is detected, described frock drive unit is a lead screw transmission mechanism 20.
Claims (7)
1. balance shaft of engine noise proving installation; It is characterized in that: the hydraulic system that it comprises base, worktable, be arranged at guide rail on the worktable, slide and be arranged at balancing shaft positioning tool, balancing shaft drive unit, balancing shaft stationary installation, noise detection device on the guide rail, accompany the examination balancing shaft and the hydraulic oil of certain pressure and temperature is provided for balancing shaft to be measured; Described balancing shaft stationary installation is the cylinder that rotatably compresses that is arranged on the balancing shaft positioning tool; Described below of accompanying the examination balancing shaft to be arranged at the balancing shaft positioning tool; The balancing shaft drive unit is arranged in the casing on worktable right side; Described noise detection device is arranged on the sidewall of box inside; Below worktable, with the corresponding position of noise detection device promising fuel tank of accompanying the examination balancing shaft that hydraulic oil is provided is set, fuel tank is connected with the fuel tank lifting gear, and it is connected balancing shaft positioning tool and driving along the frock drive unit that guide rail moves.
2. balance shaft of engine noise proving installation according to claim 1, it is characterized in that: the below that is positioned at noise detection device on the described worktable is provided with travel switch.
3. balance shaft of engine noise proving installation according to claim 1; It is characterized in that: described balancing shaft positioning tool is provided with pilot hole, and described box inside sidewall is provided with and cooperates the positioning cylinder that balancing shaft is positioned with this pilot hole.
4. balance shaft of engine noise proving installation according to claim 1 is characterized in that: described fuel tank lifting gear comprises the cylinder that is arranged at fuel tank bottom and fuel tank is led and spacing guide rod.
5. balance shaft of engine noise proving installation according to claim 1 is characterized in that: be provided with well heater and thermometer in the described fuel tank.
6. balance shaft of engine noise proving installation according to claim 1; It is characterized in that: described balancing shaft positioning tool is provided with idle pulley; Idle pulley and balance shaft assembly to be measured and accompany examination balance shaft assembly engagement; Described balancing shaft drive unit is a variable frequency drive motors, and the rotating shaft of idle pulley is connected with the output shaft of this variable frequency drive motors through shaft coupling.
7. balance shaft of engine noise proving installation according to claim 1 is characterized in that: described frock drive unit is a lead screw transmission mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205239025U CN202403794U (en) | 2011-12-15 | 2011-12-15 | Noise testing device for engine balancing shafts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205239025U CN202403794U (en) | 2011-12-15 | 2011-12-15 | Noise testing device for engine balancing shafts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202403794U true CN202403794U (en) | 2012-08-29 |
Family
ID=46701436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205239025U Expired - Lifetime CN202403794U (en) | 2011-12-15 | 2011-12-15 | Noise testing device for engine balancing shafts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202403794U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419203A (en) * | 2011-12-15 | 2012-04-18 | 朱留存 | Engine balance shaft noise testing device |
| CN113776793A (en) * | 2021-08-13 | 2021-12-10 | 江铃汽车股份有限公司 | Balance shaft module assembly comprehensive performance detection device and detection method |
-
2011
- 2011-12-15 CN CN2011205239025U patent/CN202403794U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419203A (en) * | 2011-12-15 | 2012-04-18 | 朱留存 | Engine balance shaft noise testing device |
| CN113776793A (en) * | 2021-08-13 | 2021-12-10 | 江铃汽车股份有限公司 | Balance shaft module assembly comprehensive performance detection device and detection method |
| CN113776793B (en) * | 2021-08-13 | 2023-10-20 | 江铃汽车股份有限公司 | Balance shaft module assembly comprehensive performance detection device and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120829 Effective date of abandoning: 20130821 |
|
| RGAV | Abandon patent right to avoid regrant |