CN202836422U - Measuring device for engine cylinder top dead center - Google Patents
Measuring device for engine cylinder top dead center Download PDFInfo
- Publication number
- CN202836422U CN202836422U CN 201220501420 CN201220501420U CN202836422U CN 202836422 U CN202836422 U CN 202836422U CN 201220501420 CN201220501420 CN 201220501420 CN 201220501420 U CN201220501420 U CN 201220501420U CN 202836422 U CN202836422 U CN 202836422U
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- scale
- measurement mechanism
- top dead
- push rod
- cylinder
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a measuring device for an engine cylinder top dead center. The measuring device comprises a fixed seat, a scale and a push rod. The fixed seat is used for fixing the measuring device to a cylinder cover. Graduations are provided on the scale. The push rod is horizontally fixed to a top end of the scale. The push rod can be fixed to a top end of a valve rod and moves up and down along with a valve. The measuring device for the engine cylinder top dead center has the advantages of simple structure and convenient operation; since a magnetic pole is always absorbed to the valve rod, the falling of a valve assembly into a cylinder in the piston down process is avoided; and due to the downward pull force of a spring in a bottom portion of the scale and the attraction force of the magnetic pole, a piston, the valve assembly, and a positioning rule always keep moving up and down synchronously, the incorrect measurement is avoided, and the accuracy of the measurement is improved.
Description
Technical field
The utility model relates to engine, refers in particular to a kind of cylinder top dead centre measurement mechanism.
Background technology
In the prior art, usually use dial gauge to measure engine tope center, please in conjunction with shown in Figure 1, it is the smooth position that magnetic stand 101 is fixed on cylinder upper surface or body side, adjust folding rod 102, make the contact of dial gauge 103 ride over the upper surface of valve stem 203.Hand rotation engine, piston 201 promote valve and pump: when valve moved upward, dial gauge 103 clockwise directions rotated, and observed dial gauge 103, and when the pointer of dial gauge 103 was about to rotate counterclockwise, this moment, the position was exactly engine tope center.
Above-mentioned prior art is in measuring process, because the matching relationship of valve oil seal, valve guide bushing and valve stem when descent of piston, be prone to valve and can not follow simultaneously the phenomenon of descent of piston, thereby it is inaccurate to cause measuring structure; And when descent of piston was darker, valve assembly was easily fallen in the cylinder, needed the dismounting cylinder head to take out, and brought inconvenience to surveying work.
The utility model content
The technical problems to be solved in the utility model is: provide a kind of cylinder top dead centre measurement mechanism, to improve or to overcome the one or more defective that prior art exists.
Technical solution of the present utility model is: a kind of cylinder top dead centre measurement mechanism, this measurement mechanism comprises holder, scale and push rod, described holder is used for this measurement mechanism is fixed in cylinder cover, has the scale that indicates diverse location on the described scale, described push rod level is fixed in this scale top, and described push rod can be fixed in the valve stem top and follow valve and move up and down.
Aforesaid cylinder top dead centre measurement mechanism, wherein, described device also comprises shell and extension spring, and described extension spring is located between this magnetic base and the scale, and described scale bottom has supporting plate, and described supporting plate can slide up and down along outer casing inner wall.
Aforesaid cylinder top dead centre measurement mechanism, wherein, described holder is for being adsorbed in the magnetic base on the cylinder cover top end face.
Aforesaid cylinder top dead centre measurement mechanism, wherein, the push rod of described measurement mechanism is for being adsorbed in the magnetic rod on valve stem top.
Aforesaid cylinder top dead centre measurement mechanism, wherein, the push rod of described measurement mechanism is for being adsorbed in the magnetic rod on valve stem top.
The utility model is made of magnetic base, extension spring, scale and magnetic rod.During use, magnetic base is adsorbed in smooth place, engine cylinder cap upper surface, makes the valve stem upper end be adsorbed on the magnetic rod lower surface.Hand rotation engine, piston promote valve and pump.When piston moved upward, the valve stem top promoted magnetic rod and moves upward, and drives simultaneously scale and moves up, and scale label increases.When piston moved downward, under the effect of scale bottom extension spring, magnetic rod and scale were along with valve stem moves down, and scale label reduces.In reciprocating motion of the pistons, magnetic rod and scale remain with valve stem and move up and down synchronously, and scale label value maximum position is exactly piston top dead center, therefore, the utlity model has simple in structure, easy to operate advantage.
Utilize top dead centre measurement mechanism of the present utility model, because magnetic rod is attached together with valve stem all the time, avoided in descent of piston process valve assembly to fall into situation in the cylinder; And, because the downward pulling force of scale bottom extension spring and the suction of magnetic rod remain synchronously piston, valve assembly and positioning rule and moves up and down, avoided mistake to measure, improved the accuracy of measuring.
Description of drawings
Fig. 1 utilizes dial gauge to measure the principle of work schematic diagram of engine tope center in the prior art.
Fig. 2 is the structural representation of a specific embodiment of cylinder top dead centre positioning measuring device of the present utility model.
Fig. 3 is the principle of work schematic diagram that utilizes the cylinder top dead centre positioning rule measurement engine tope center among Fig. 2.
Embodiment
Such as Fig. 2, shown in Figure 3, the utility model proposes a kind of cylinder top dead centre measurement mechanism, comprise holder, scale and push rod, described holder is used for this measurement mechanism is fixed in cylinder cover, described scale is marked with scale, described push rod level is fixed in this scale top, and described push rod can be fixed in the valve stem top and follow valve and move up and down, and then drives under the scale and move up and down.The utility model utilizes the linearity of measurement mechanism to move up and down and can determine easily the top dead centre of piston according to the scale value of scale, and simple in structure, easy to operate, measurement result is accurate.
The below cooperates drawings and the specific embodiments that embodiment of the present utility model is described in further detail.
As shown in Figure 2, it is the structural representation of a specific embodiment of cylinder top dead centre positioning rule of the present utility model.In the present embodiment, this cylinder top dead centre measurement mechanism 10 comprises magnetic base 11, extension spring 12, scale 13, shell 14 and magnetic rod 15, magnetic base 11 can be adsorbed on the cylinder cover top end face, the bottom of this scale 13 is arranged on the base 11 by extension spring 12, its top level is provided with this magnetic rod 15, push rod 15 can relatively be fixed in valve stem 23 and move up and down (please refer to shown in Figure 3) with valve stem 23, and then the drive scale moves up and down for 13 times.The utility model utilizes the linearity of measurement mechanism to move up and down and can determine easily the top dead centre of piston according to the scale value of scale.
As shown in Figure 2, extension spring 12 is located between this magnetic base 11 and the scale 13, described scale 13 bottoms have supporting plate 131, this supporting plate 131 can slide up and down along shell 14 inwalls, thereby obtains the engine tope center position so that scale 13 can move up and down under the drive of valve stem 23, magnetic rod 15.
In the present embodiment, measure easily for the ease of the operator, it is the top setting with the zero graduation 132 close scales 13 of scale 13, with consistent with common use habit, but be not limited to this, the utility model also can not arrange zero-bit, and only need represent that the scale of corresponding diverse location and symbol get final product.
As shown in Figure 3, it is the principle of work schematic diagram that utilizes the cylinder top dead centre positioning rule measurement engine tope center among Fig. 2.Cylinder top dead centre measurement mechanism of the present utility model for example can be applied to DE08TIS, but is not limited to this.During use, only need magnetic base 11 is adsorbed in the smooth place of engine cylinder cap upper surface, make valve stem 23 upper ends be adsorbed on magnetic rod 15 lower surfaces.Hand rotation engine, piston 21 promote valve and pump.When piston 21 moved upward, valve stem 23 tops promoted magnetic rod 15 and move upward, and drive simultaneously scale 13 and move up, and scale 13 scales that are exposed to shell 14 increase.When piston 21 moved downward, under the effect of scale 13 bottom extension springs 12, magnetic rod 15 and scale 13 were along with valve stem 23 moves down, and the scale label that is exposed to shell 14 reduces.In piston 21 to-and-fro movements, magnetic rod 15 and scale 13 remain with valve stem 23 and move up and down synchronously, therefore the scale value maximum position of scale 13 is exactly piston top dead center.
The measurement mechanism of the present embodiment because magnetic rod 15 is attached together with valve stem 23 all the time in the work engineering, has avoided in piston 21 descending processes valve assembly to fall into situation in the cylinder; Secondly, because the downward pulling force of scale 13 bottom extension springs 12 and the suction of magnetic rod 15 remain synchronously piston, valve assembly and measurement mechanism and moves up and down, avoid mistake to measure, thereby improved the accuracy that engine tope center is measured.
Although the utility model discloses with specific embodiment; but it is not to limit the utility model; the different technologies feature of each specific embodiment can be selected or make up as required; any those skilled in the art; the displacement of the equivalent assemblies of under the prerequisite that does not break away from design of the present utility model and scope, having done; or according to equivalent variations and modification that the utility model scope of patent protection is done, all should still belong to the category that this patent is contained.
Claims (5)
1. cylinder top dead centre measurement mechanism, it is characterized in that, this measurement mechanism comprises holder, scale and push rod, described holder is used for this measurement mechanism is fixed in cylinder cover, has the scale that indicates diverse location on the described scale, described push rod level is fixed in this scale top, and described push rod can be fixed in the valve stem top and follow valve and move up and down.
2. cylinder top dead centre measurement mechanism as claimed in claim 1, it is characterized in that, described device also comprises shell and extension spring, and described extension spring is located between this magnetic base and the scale, described scale bottom has supporting plate, and described supporting plate can slide up and down along outer casing inner wall.
3. cylinder top dead centre measurement mechanism as claimed in claim 1 or 2 is characterized in that, described holder is for being adsorbed in the magnetic base on the cylinder cover top end face.
4. cylinder top dead centre measurement mechanism as claimed in claim 1 or 2 is characterized in that, the push rod of described measurement mechanism is for being adsorbed in the magnetic rod on valve stem top.
5. cylinder top dead centre measurement mechanism as claimed in claim 3 is characterized in that, the push rod of described measurement mechanism is for being adsorbed in the magnetic rod on valve stem top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220501420 CN202836422U (en) | 2012-09-29 | 2012-09-29 | Measuring device for engine cylinder top dead center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220501420 CN202836422U (en) | 2012-09-29 | 2012-09-29 | Measuring device for engine cylinder top dead center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202836422U true CN202836422U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220501420 Expired - Fee Related CN202836422U (en) | 2012-09-29 | 2012-09-29 | Measuring device for engine cylinder top dead center |
Country Status (1)
| Country | Link |
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| CN (1) | CN202836422U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021101A (en) * | 2015-08-10 | 2015-11-04 | 广西玉柴机器股份有限公司 | Engine piston top dead center detection method |
| CN108180805A (en) * | 2017-12-18 | 2018-06-19 | 重庆厚全科技发展有限公司 | Motorcycle back elbow rest detection device |
| CN108759617A (en) * | 2018-05-25 | 2018-11-06 | 胡学静 | Engine piston goes out cylinder amount detecting device and method of adjustment |
| CN114017660A (en) * | 2021-10-21 | 2022-02-08 | 长沙海泰克自动化设备有限公司 | Controllable oiling device |
-
2012
- 2012-09-29 CN CN 201220501420 patent/CN202836422U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021101A (en) * | 2015-08-10 | 2015-11-04 | 广西玉柴机器股份有限公司 | Engine piston top dead center detection method |
| CN105021101B (en) * | 2015-08-10 | 2018-08-31 | 广西玉柴机器股份有限公司 | The detection method of the top dead centre of the piston of engine |
| CN108180805A (en) * | 2017-12-18 | 2018-06-19 | 重庆厚全科技发展有限公司 | Motorcycle back elbow rest detection device |
| CN108180805B (en) * | 2017-12-18 | 2020-01-07 | 重庆厚全科技发展有限公司 | Motorcycle back armrest detection device |
| CN108759617A (en) * | 2018-05-25 | 2018-11-06 | 胡学静 | Engine piston goes out cylinder amount detecting device and method of adjustment |
| CN108759617B (en) * | 2018-05-25 | 2020-07-24 | 永康市小菜丫厨具有限公司 | Engine piston cylinder discharge amount detection device and adjustment method |
| CN114017660A (en) * | 2021-10-21 | 2022-02-08 | 长沙海泰克自动化设备有限公司 | Controllable oiling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20130929 |