CN109931848A - The on-line measuring device of timing chain elongation - Google Patents
The on-line measuring device of timing chain elongation Download PDFInfo
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- CN109931848A CN109931848A CN201910231809.8A CN201910231809A CN109931848A CN 109931848 A CN109931848 A CN 109931848A CN 201910231809 A CN201910231809 A CN 201910231809A CN 109931848 A CN109931848 A CN 109931848A
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- timing chain
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- measuring device
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Abstract
The object of the present invention is to provide one kind in the case where not tearing engine open, the quickly on-line measuring device of detection timing chain elongation, including the internal shell for being equipped with chamber, plunger is placed in from one end of shell, positioned at housing chamber indoor plunger inner end end and instruction plunger one end against, it indicates to stretch out hull outside after the outer suspension end of plunger passes through the through-hole that the shell other end opens up, the elastic element for driving plunger tensioning timing chain is additionally provided in chamber, the showing rod for protruding out to hull outside is provided with graduation mark beyond the Great Wall.In above scheme, when timing chain elongation, plunger extends under the action of by elastic element, continue to head on movable guiding rail, timing chain is set to keep tensioning state, the graduation mark of showing rod beyond the Great Wall is gradually mobile to enclosure interior at this time, and the elongation of timing chain can be measured according to the position of these graduation marks.
Description
Technical field
The present invention relates to technical field of engines, and in particular to a kind of on-line measuring device of timing chain elongation.
Background technique
The timing driving system of engine is generally divided into chain drive and belt transmission is compared with belt, and chain, which has, to be held
The advantages that loading with lotus height, good reliability, compact arrangement space and be widely used.But since chain is using metallic bond piece and pin
Axis head and the tail are formed by connecting, these metalworks bear always pulling force during the work time, can inevitably be elongated and deform, so that
Entire chain increases.After timing chain elongation, it will cause engine timing phase " drift ", influence the accuracy of phase, this is just
It will affect oil spout and the accuracy of time of ignition, to influence the performance of engine.Chain drive for certain applications
Engine need to detect chain elongation rate every some cycles, while wishing handle again it is required that engine performance is more harsh
The case where chain elongation can be quickly detected under the premise of not tearing engine open.
Summary of the invention
The object of the present invention is to provide one kind in the case where not tearing engine open, is quickly detecting timing chain elongation just
When chain elongation amount on-line measuring device.
To achieve the goals above, a kind of the technical solution adopted by the present invention are as follows: on-line checking of timing chain elongation
Device, including the internal shell for being equipped with chamber, plunger is placed in from one end of shell, is located at housing chamber indoor plunger inner end end
One end with instruction plunger is against indicating to stretch out outside shell after the outer suspension end of plunger passes through the through-hole that opens up of the shell other end
Portion, the elastic element for driving plunger tensioning timing chain is additionally provided in chamber, and the showing rod for protruding out to hull outside sets beyond the Great Wall
It is equipped with graduation mark.
In above scheme, when timing chain elongation, plunger extends under the action of by elastic element, continues to head on activity
Guide rail makes timing chain keep tensioning state, and the graduation mark of showing rod beyond the Great Wall is gradually mobile to enclosure interior at this time, according to these
The position of graduation mark can measure the elongation of timing chain.
Detailed description of the invention
Fig. 1 is cross-sectional view of the invention；
Fig. 2 is installation diagram of the invention.
Specific embodiment
After timing chain A is assembled on engine, timing chain A is separately connected the crankshaft sprocket and camshaft chain of engine
Wheel, two sides are fixed by two guide rails, and timing chain A is run along the track of fixed guide rail C.With reference to Fig. 2, engine crankshaft
It generally rotates clockwise (in terms of front end), right side chain is tensioning side (camshaft sprocket is load) in this way, and left side chain is
Slack list, slack list chain are run along movable guiding rail B profile.
A kind of on-line measuring device of timing chain elongation, including the internal shell 10 for being equipped with chamber, plunger 20 is from shell
One end of body 10 is placed in, positioned at the indoor 20 inner end end of plunger of 10 chamber of shell and one end of instruction plunger 30 against showing rod
The outer suspension end of plug 30 is stretched out outside shell 10 after passing through the through-hole that 10 other end of shell opens up, and is additionally provided in chamber and is driven column
Plug 20 is tensioned the elastic element of timing chain A, is provided with graduation mark 31 on the instruction plunger 30 protruded out to outside shell 10.Just
When chain A when being original state (this stylish chain is most short situation without abrasion), the present invention is screwed to engine cylinder and is covered, is taken
For the position of original stretcher, when arriving to movable guiding rail B, continue to tighten, instruction plunger 30 is gradually stretched.Due to this device
Shell 10 is consistent with former stretcher external structure size, therefore after the device is tightened completely, it is just comparable to be tensioned originally
Device is tightened in place completely, and timing chain A inner tensions reach design value.When timing chain A elongation, plunger 20 is in elastic element
Under the action of extend, continue to head on movable guiding rail B, make timing chain A keep tensioning state, at this time indicate plunger 30 on scale
To moving inside shell 10, the elongation of timing chain A gradually can be measured according to the position of these graduation marks 31 for line 31.This
In plunger 20 and instruction plunger 30 also can be made integral type.
Instruction plunger 30 first carries out scale before formal assembly, due in engine operation process, timing chain A
Valve actuating mechanism operating is driven, and it is in periodically variable that the load of valve actuating mechanism, which is, so even if the same timing chain A,
Engine difference crank position, instruction plunger 30 are also different.In this case it is desirable to be directed to different length timing chain A
After assembly, engine crankshaft, mark instruction 30 position of plunger are rotated.Graduation mark 31 includes a plurality of acceptance line and a plurality of unqualified
Line, acceptance line are arranged close to shell 10.If acceptance line, outside shell 10, timing chain A length meets the requirements.If unqualified
Line has entered inside shell 10, then illustrates that timing chain A elongation is too many, the center timing chain A is away from too big.So as to judge
Timing chain A has been unsatisfactory for requiring.When calibration does not conform to ruling, need in advance to fill the underproof timing chain A of elongation
Onto engine, after rotating engine, underproof station location marker is come out.
Further, elastic element is spring 40, and spring 40 is set on the shaft of the indoor instruction plunger 30 of chamber, spring
40 one end offsets with 20 inner end end of plunger, the other end and 10 inner wall of end of shell offset, and spring 40 provides elastic force and drives column
Plug 20 is moved along its axial direction to the direction of tensioning timing chain A.After timing chain A is elongated, spring 40 drive plunger 20 after
Continuous tensioning timing chain A.
Further, instruction plunger 30 is provided with interconnecting piece 32, interconnecting piece 32 and plunger 20 close to one end of plunger 20
End pass through screw thread constitute detachable connection, it is convenient for assembly and disassembly.
It is provided with lock ring 21 on the outer wall of 20 middle position of plunger, is arranged on the inside of lock ring 21 and 10 nozzle of shell
The axial position of block 11 cooperation limitation plunger 20 and shell 10.It can not continue to stretch after plunger 20 to lock position, at this time
The state stretched out in maximum, convenient for determining rigging position.
It is provided with annular groove on the outer wall of near inner end on plunger 20, is provided with Gask-O-Seal in annular groove.
Plunger 20 be hollow setting, the outer end of plunger 20 be provided with for the movable guiding rail B with timing chain A against support
Relying part is provided with location hole 22 on butting section.When needing to measure timing chain A elongation, engine is not needed to dismantle, be led to
Crossing the measuring device can quickly judge.Before removing the stretcher of normal condition, lock pin is first passed through outside timing chain A
The cover in face is then passed through corresponding hole above the movable guiding rail B of the inside, tightens lock pin fixed on motor head, removes at this time
Stretcher, and timing chain A system is still within the state being tensioned (the fixed guide rail of lock pin keeps timing chain A tensioning).So
After be loaded on the measuring device, remove lock pin after tightening, then go to engine crankshaft, observation is in the process, if has not
Acceptance line enters in shell 10, if nothing, timing chain A elongation still meets requirement；If there is entrance, timing chain A
Elongation is more than permissible value, is needed replacing.When not needing replacement, it is changed to original after being inserted into lock pin according to preceding method
Stretcher restores engine.
For the ease of the installation and positioning of the measuring device, the tensioning of corresponding position on location hole 22 and timing chain A
The location hole of device is identical, and the structure and size of shell 10 are also identical as the structure and size of stretcher.
Claims (8)
1. a kind of on-line measuring device of timing chain elongation, it is characterised in that: the shell (10) of chamber is equipped with including inside,
Plunger (20) is placed in from one end of shell (10), is located at shell (10) chamber indoor plunger (20) inner end end and instruction plunger
(30) one end is against shell is stretched out after passing through the through-hole that shell (10) other end opens up in the outer suspension end of instruction plunger (30)
(10) external, it is additionally provided with the elastic element for driving plunger (20) tensioning timing chain A in chamber, it is external to protrude out to shell (10)
Instruction plunger (30) on be provided with graduation mark (31).
2. the on-line measuring device of timing chain elongation according to claim 1, it is characterised in that: graduation mark (31) packet
Include a plurality of acceptance line and it is a plurality of do not conform to ruling, acceptance line is arranged close to shell (10).
3. the on-line measuring device of timing chain elongation according to claim 1, it is characterised in that: elastic element is bullet
Spring (40), spring (40) are set on the shaft of indoor instruction plunger (30) of chamber, and one end and plunger (20) of spring (40) are inner
End offsets, the other end and shell (10) inner wall of end offset at end, and spring (40), which provides elastic force, drives plunger (20) along its axial direction
It is mobile to the direction of tensioning timing chain A.
4. the on-line measuring device of timing chain elongation according to claim 3, it is characterised in that: instruction plunger (30)
It is provided with interconnecting piece (32) close to the one end of plunger (20), the end of interconnecting piece (32) and plunger (20) is made up of removable screw thread
Unload formula connection.
5. the on-line measuring device of timing chain elongation according to claim 1, it is characterised in that: plunger (20) is intermediate
It is provided on outer wall at position lock ring (21), the block (11) being arranged on the inside of lock ring (21) and shell (10) nozzle cooperates
Limit the axial position of plunger (20) and shell (10).
6. the on-line measuring device of timing chain elongation according to claim 1, it is characterised in that: plunger leans on (20)
It is provided with annular groove on the outer wall of near inner end, is provided with Gask-O-Seal in annular groove.
7. the on-line measuring device of timing chain elongation according to claim 1, it is characterised in that: plunger (20) is sky
Heart setting, the outer end of plunger (20) be provided with for the movable guiding rail B with timing chain A against butting section, set on butting section
It is equipped with location hole (22).
8. the on-line measuring device of timing chain elongation according to claim 7, it is characterised in that: location hole (22) with
The location hole of the stretcher of corresponding position is identical on timing chain A, and the structure and size of shell (10) also with the knot of stretcher
Structure, size are identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910231809.8A CN109931848B (en) | 2019-03-26 | 2019-03-26 | Online detection device for elongation of timing chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910231809.8A CN109931848B (en) | 2019-03-26 | 2019-03-26 | Online detection device for elongation of timing chain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109931848A true CN109931848A (en) | 2019-06-25 |
| CN109931848B CN109931848B (en) | 2021-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910231809.8A Active CN109931848B (en) | 2019-03-26 | 2019-03-26 | Online detection device for elongation of timing chain |
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| Country | Link |
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| CN (1) | CN109931848B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4092781A (en) * | 1977-04-01 | 1978-06-06 | Blake Eugene H | Chain elongation gauge |
| CN102171488A (en) * | 2008-10-01 | 2011-08-31 | 日本发条株式会社 | Tensioner |
| DE102012219596A1 (en) * | 2012-10-26 | 2014-04-30 | Bayerische Motoren Werke Aktiengesellschaft | Chain tensioning device for chain drive of internal combustion engine in vehicle, has integrated display device for displaying verifiable display of wear-conditional extension of chain drive |
| CN205207562U (en) * | 2015-11-10 | 2016-05-04 | 绵阳富临精工机械股份有限公司 | Variable force tensioning ware of engine timing chain |
| CN108869670A (en) * | 2018-06-15 | 2018-11-23 | 重庆长安汽车股份有限公司 | A kind of timing chain tension device, engine and automobile |
| DE102017114108A1 (en) * | 2017-06-26 | 2018-12-27 | Iwis Motorsysteme Gmbh & Co. Kg | Kettenlängungsmesswerkzeug |
-
2019
- 2019-03-26 CN CN201910231809.8A patent/CN109931848B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4092781A (en) * | 1977-04-01 | 1978-06-06 | Blake Eugene H | Chain elongation gauge |
| CN102171488A (en) * | 2008-10-01 | 2011-08-31 | 日本发条株式会社 | Tensioner |
| DE102012219596A1 (en) * | 2012-10-26 | 2014-04-30 | Bayerische Motoren Werke Aktiengesellschaft | Chain tensioning device for chain drive of internal combustion engine in vehicle, has integrated display device for displaying verifiable display of wear-conditional extension of chain drive |
| CN205207562U (en) * | 2015-11-10 | 2016-05-04 | 绵阳富临精工机械股份有限公司 | Variable force tensioning ware of engine timing chain |
| DE102017114108A1 (en) * | 2017-06-26 | 2018-12-27 | Iwis Motorsysteme Gmbh & Co. Kg | Kettenlängungsmesswerkzeug |
| CN108869670A (en) * | 2018-06-15 | 2018-11-23 | 重庆长安汽车股份有限公司 | A kind of timing chain tension device, engine and automobile |
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| Publication number | Publication date |
|---|---|
| CN109931848B (en) | 2021-04-27 |
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