CN207636304U - Engine and dynamometer machine centering device - Google Patents
Engine and dynamometer machine centering device Download PDFInfo
- Publication number
- CN207636304U CN207636304U CN201721887090.6U CN201721887090U CN207636304U CN 207636304 U CN207636304 U CN 207636304U CN 201721887090 U CN201721887090 U CN 201721887090U CN 207636304 U CN207636304 U CN 207636304U
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- clamping plate
- pair
- engine
- centering
- pedestal
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Abstract
The utility model is related to the test-beds of engine, and in particular to engine and dynamometer machine centering device.Engine and dynamometer machine centering device, including：Outer circumference surface is the pedestal of cylinder, scalable centering rod positioned at one end face center position of pedestal, a pair of of support plate on pedestal other end, a pair of of the clamping plate being flexibly connected with a pair of of support plate, spring between a pair of of clamping plate is connected between the support plate and clamping plate by pin, when no external force applies, the thrust of spring makes the bare terminal end of clamping plate close up around pin axis, generates chucking power.The beneficial effects of the utility model are：Required space is small, it is only necessary to which the space of a plain nut diameter can place the tool, and carry out normal centering operation.
Description
Technical field：
The utility model is related to the test-beds of engine, and in particular to engine and dynamometer machine centering device.
Background technology：
In threst stand build process, engine is connected by a connecting shaft with dynamometer machine, the connecting shaft
It is responsible for the work(that engine is externally made passing to dynamometer machine.Centering process refers to by the center line of main bearing of engine, with survey
Work(arbor axle center is placed in the process on same straight line.Since high-speed diesel fuel engine speed is generally higher than 3000r/min, mostly
Number gasoline engine maximum speed can be more than even more 6000r/min, if centering is inaccurate, under certain speed conditions, and connection
Axis can lead to eccentric force occur because of bias, or even connection axle fracture occur.Off-axis or relic in high speed rotation is with pole
It flies off at a tangent at high speed, easily causes personal injury or property loss.Use for laboratory is in engine and dynamometer machine at present
There are mainly two types of the methods of centering, is adsorbed in connecting shaft, makes one is the dial gauge with Magnetic gauge stand, Magnetic gauge stand is used
Dial gauge can be with connecting shaft synchronous rotary, dial indicator measuring head and shaft compression so that dial gauge there are an initial value,
By monitoring the reading of axis dial gauge when rotating to different angle, centering situation is judged；Another kind is iron wire method, chooses two
Thinner iron wire is separately fixed on the ring flange of connecting shaft both ends, and makes two iron wire axle center conllinear at the beginning, passes through observation
The extent of deviation in two iron wire axle center when rotating to different angle, judges centering situation.The former take, and need working space compared with
Greatly；The latter's precision is directly related with iron wire sectional area, and generally iron wire is pressed abd fixed under the nut of ring flange, this requires
The dismounting of nut not only needs certain space, and need keep centering before and after nut torque it is consistent as possible.Current one
Gasoline engine is divided to carry coupling guard, and body needs to be fixed to laboratory foundation bolt by the fixed module on protective cover
On.Because protective cover is in gradual shrinkage, preceding end spaces very little, it is necessary to connecting shaft are first connected to flywheel end, reconnect protective cover
And fixed body, but when this allows for follow-up centering operation, the nut on dismantling connection shaft flange disk becomes extremely difficult again.
Since the space of connection shaft assignment is too small, dial gauge is also nowhere placed, therefore is just needed a kind of small to space requirement and need not
Repeated disassembled and assembled fixed component centering tool come assist carry out centering operation.
Invention content：
The utility model to solve the above-mentioned problems, a kind of space requirement of utility model it is small and need not repeated disassembled and assembled consolidated
It is smaller to solve a part of high speed engine rack flywheel end spaces at present for improving centering efficiency for the centralising device for determining component
To the adverse effect of centering operation.
Engine and dynamometer machine centering device, including：Outer circumference surface is the pedestal 2 of cylinder, is located at one end face of pedestal
The scalable centering rod 1 of center, a pair of of the support plate 204 being located on pedestal other end connect with a pair of of support plate activity
A pair of of the clamping plate 3 connect, the spring 4 being located between a pair of of clamping plate, is connected between the support plate and clamping plate by pin 5, in nothing
When external force applies, the thrust of spring makes the bare terminal end of clamping plate close up around pin axis, generates chucking power.
One of preferably, further include：A circle groove 202 on pedestal outer circumference surface, for placing iron wire
To realize in a manner of another centering.
Preferably two, further include：Positioned at the circular clamp slot 301 of a pair of of clamping plate clip position.
The beneficial effects of the utility model are：
(1) space needed for is small, it is only necessary to which the space of a plain nut diameter can place the tool, and carry out normal
Centering operation.
(2) easy for assemble or unload, do not have to dismounting fixing bolt, nut that can directly by tool holder on ring flange
Or bolt head.
(3) scalable centering rod can adjust its length according to demand, be conducive to start under the conditions of different length connecting shaft
The centering of machine and dynamometer machine operates.
(4) in embodiment, in special circumstances, such as connecting shaft both ends flange plate bolt hole number difference, two be can not achieve
When centering tool is collinearly arranged, the iron wire of suitable cross-section product can be fixed in base slot, carried out pair to be converted to iron wire method
Middle operation.
Description of the drawings：
Fig. 1 is the overall structure diagram of centralising device in the utility model embodiment；In figure, 1 represents scalable centering
Bar, 2 represent pedestal, and 3 represent clamping plate, and 4 represent spring, and 5 represent pin.
Fig. 2 is the overall structure diagram of pedestal in embodiment；In figure, 201 represent the screw thread for installing scalable centering rod
Hole, 202 represent groove, and 203 represent pin hole, and 204 represent support plate.
Fig. 3 is the overall structure diagram of centralising device in embodiment；In figure, 1 represents scalable centering rod, and 2 represent base
Seat, 3 represent clamping plate, and 301 represent circular clamp slot, and 4 represent spring, and 5 represent pin.
Fig. 4 is docking schematic diagram of the centralising device on rack in embodiment.
Specific implementation mode：
Embodiment：
Engine and dynamometer machine centering device, including：Outer circumference surface is the pedestal 2 of cylinder, is located at one end face of pedestal
The scalable centering rod 1 of center, a pair of of the support plate 204 being located on pedestal other end connect with a pair of of support plate activity
A pair of of the clamping plate 3 connect, the spring 4 being located between a pair of of clamping plate, the circle groove 204 being located on pedestal outer circumference surface are located at one
To the circular clamp slot 301 of clamping plate clip position；
It is connected by pin 5 between the support plate and clamping plate, when no external force applies, the thrust of spring makes the folder of clamping plate
It holds end around pin axis to close up, generates chucking power；The groove, for placing iron wire to realize in a manner of another centering；It is described
Circular clamp slot is for preferably grip bolt head.
As shown in figure 4, when carrying out centering operation, a pair of of centering tool is taken, clamping plate 3 is pressed, adjusts its openings of sizes, it will
It is separately fixed at the nut or bolt head of connecting shaft both ends ring flange, when choosing fixed point, it is ensured that two fixed points are same
On one horizontal linear；The scalable centering rod 1 for adjusting two centering tools respectively keeps its distance small as far as possible, is conducive to
Improve accuracy of alignment；Adjust engine location so that under this crank angle, two 1 axle center of centering rod are conllinear；Following centering step
Identical as traditional centering method, i.e. jiggering certain angle, whether two centering rod axle center are conllinear at this time for observation, if not conllinear
Engine location is adjusted, so that the two is realized conllinear, repeatedly, finally so that under arbitrary crank angle, two centering rod axis
The heart is conllinear, then centering is completed.
Under special circumstances, such as connecting shaft both ends flange plate bolt hole number difference, it is total that two centering tools be can not achieve
When line is arranged, the iron wire of suitable cross-section product can be fixed respectively in tool base groove, centering is carried out to be converted to iron wire method
Operation.
Claims (3)
1. engine and dynamometer machine centering device, which is characterized in that including：Outer circumference surface is the pedestal (2) of cylinder, is located at base
The scalable centering rod (1) of one end face center position of seat, a pair of of the support plate (204) being located on pedestal other end, with one
To a pair of of clamping plate (3) of support plate flexible connection, the spring (4) being located between a pair of of clamping plate, between the support plate and clamping plate
It is connected by pin (5), when no external force applies, the thrust of spring makes the bare terminal end of clamping plate close up around pin axis, generates clamping
Power.
2. engine and dynamometer machine centering device according to claim 1, which is characterized in that further include：Outside pedestal
A circle groove (202) on periphery, for placing iron wire to realize in a manner of another centering.
3. engine according to claim 1 or claim 2 and dynamometer machine centering device, which is characterized in that further include：Positioned at a pair
The circular clamp slot (301) of clamping plate clip position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721887090.6U CN207636304U (en) | 2017-12-29 | 2017-12-29 | Engine and dynamometer machine centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721887090.6U CN207636304U (en) | 2017-12-29 | 2017-12-29 | Engine and dynamometer machine centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207636304U true CN207636304U (en) | 2018-07-20 |
Family
ID=62851920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721887090.6U Expired - Fee Related CN207636304U (en) | 2017-12-29 | 2017-12-29 | Engine and dynamometer machine centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207636304U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991099A (en) * | 2017-12-29 | 2018-05-04 | 天津大学 | Engine and dynamometer machine centering device |
-
2017
- 2017-12-29 CN CN201721887090.6U patent/CN207636304U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991099A (en) * | 2017-12-29 | 2018-05-04 | 天津大学 | Engine and dynamometer machine centering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180720 Termination date: 20211229 |