CN208108959U - A kind of connecting-rod bolts elongation measuring device - Google Patents
A kind of connecting-rod bolts elongation measuring device Download PDFInfo
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- CN208108959U CN208108959U CN201820695530.6U CN201820695530U CN208108959U CN 208108959 U CN208108959 U CN 208108959U CN 201820695530 U CN201820695530 U CN 201820695530U CN 208108959 U CN208108959 U CN 208108959U
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Abstract
The utility model provides a kind of connecting-rod bolts elongation measuring device, including cubing ontology, amesdial, and the cubing ontology is U-shaped structure comprising horizontal segment and opposite left and right vertical section, left and right vertical section pass through the horizontal segment integrally connected；Corresponding fixed test pin and activity detection pin are respectively equipped on the opposite inner wall of left and right vertical section；The amesdial is fixedly mounted on the outer wall of right vertical section by a screw, and amesdial contact and the activity detection pin are contradicted far from one end of fixed test pin and connected to measure connecting-rod bolts length；Periphery of the activity detection pin close to amesdial side has radially raised shifting block, in right vertical section front along activity detection pin shaft to offering sliding slot, the sliding slot is communicated with the through-hole, and the shifting block is slidably matched with the sliding slot, and shifting block is connect with a shifting fork mechanism.The utility model delicate structure can directly use at engine assembly scene, and detection accuracy is high, and measuring speed is fast.
Description
Technical field
The utility model relates to a kind of field of measuring technique, specially a kind of connecting-rod bolts extend measuring device.
Background technique
Engine connecting rod structure gonnecting rod body A, connecting rod cap B and connecting-rod bolts C as shown in Figure 1, be mainly made of.Gonnecting rod body A
It is linked together with connecting rod cap B by connecting-rod bolts C, main component of the connecting rod as connection crankshaft and piston works as high engine speeds
When operating, connecting rod will bear biggish reciprocal load, connecting rod bear the gas load that piston pin transmits and itself swing and
The effect of piston group reciprocal inertia force, the size and Orientation of these power be all it is periodically variable, for intensity, connecting rod be hair
Most weak position in motivation, its damage will lead to the major accident of entire engine.Therefore, in engine actual motion
In, particularly important to the control of elongation of the connecting-rod bolts C in rundown process, elongation is excessive so that bolt material is reached
Yield limit makes bolt generate permanent deformation, and elongation is too small, and making connecting rod cap B, there may be releases in operation.Therefore, must
The elongation that must accurately determine connecting-rod bolts, must determine the elongation of bolt while determining screw-down torque.It is big at present
Horsepower connecting-rod bolts are in assembly, it is desirable that within the bolt elongate consistent length to 0.1mm after assembling.
There are two types of the widespread practices of connecting-rod bolts elongation detection at present：
A) it is detected using outside micrometer.The disadvantage is that：Need to be pre-machined connecting-rod bolts end face before connecting-rod bolts assembly, it is no
Then measurement result inaccuracy；Narrow space after connecting-rod bolts are assembled on engine, can not detect.
B) ultrasound examination is used.The disadvantage is that：The shortcomings that ultrasound examination is that bolt both ends of the surface are required with high, high-power company
Bar bolt both ends of the surface have preprocessing centre hole, and end face is uneven, and Data Detection inaccuracy, product quality cannot ensure.
Utility model content
For the defects in the prior art, the utility model provides a kind of connecting-rod bolts elongation measuring device, measurement
Precision is high, detection speed is fast, delicate structure, can directly use at engine assembly scene.
Technical solutions of the utility model are as follows：
A kind of connecting-rod bolts elongation measuring device, including cubing ontology, amesdial, key are：The cubing sheet
Body is U-shaped structure comprising horizontal segment and opposite left and right vertical section, left and right vertical section pass through the horizontal segment integrally connected；
Corresponding fixed test pin and activity detection pin are respectively equipped on the opposite inner wall of left and right vertical section, in the inner wall of left vertical section
On be provided with blind hole, perforative through-hole is provided on the inner wall of right vertical section, the fixed test pin is fixedly mounted on the blind hole
Interior, the activity detection pin clearance fit is in the through-hole；The amesdial is fixedly mounted on right vertical section by a screw
Outer wall on, amesdial contact and the activity detection pin are contradicted far from one end of fixed test pin and are connected；The activity detection
Selling the periphery close to fixed test pin side has shelves disk, is equipped between this grade of disk and the right vertical section inner wall and resets bullet
Spring；Periphery of the activity detection pin close to amesdial side has radially raised shifting block, on right vertical section front edge
To sliding slot is offered, which communicates activity detection pin shaft with the through-hole, and the shifting block is slidably matched with the sliding slot, and dials
Block is connect with a shifting fork mechanism, and shifting fork mechanism drives the activity detection pin to slide axially along the through-hole.
Preferably, the shifting fork mechanism includes shift fork, shift fork spacer, shift fork pin shaft, and the shift fork is rotatably coupled to
The right vertical section front；The shift fork spacer is by shifting fork pin axis connection in described shift fork one end, and the shift fork is far from described
The other end of shift fork spacer is open with fork-shaped, and the shifting block is fastened in fork-shaped opening, and shift fork rotation drives activity detection
Pin slides axially along the through-hole.
Preferably, two coarse positioning pins are successively arranged along horizontal section length direction in the horizontal segment inner wall.
Preferably, the connecting-rod bolts elongation measuring device further includes handle, and the handle is fixedly mounted on the water
Flat section is leaned on the outer wall of right vertical section one end.
Preferably, the amesdial is digital display dial gauge, and band Protection Counter Functions can quickly calculate connecting rod elongation.
A kind of connecting-rod bolts elongation measuring method, it is critical that including the following steps：
1) connecting-rod bolts are manually tightened by technique requirement, will connecting-rod bolts screw in gonnecting rod body bolt hole in, make connecting rod cap and
Connecting rod fitting, is just contacted with no connecting-rod bolts the brim of a hat face with connecting rod cap；
2) connecting rod is fitted into measuring device, the side of connecting rod cap is resisted against on coarse positioning pin, by lower shift fork, makes fixed inspection
It surveys in the centre bore of pin insertion connecting-rod bolts tail portion, unclamps shift fork, activity detection pin is inserted into connecting rod under the action of reset spring
In the centre bore of bolt head, gentle agitation device, after amesdial reads no change, reading amesdial numerical value L1, L1 is connecting rod
The original length of bolt；
3) step 2) is repeated, L1 error is less than 0.001mm；
4) connecting rod is removed, using standard technology as defined in drawing by connecting rod bolt screwing；
5) connecting rod tightened is fitted into measuring device, the side of connecting rod cap is resisted against on coarse positioning pin, by lower shift fork, is made
Fixed test pin is inserted into the centre bore of connecting-rod bolts tail portion, unclamps shift fork, and activity detection pin is inserted under the action of reset spring
In the centre bore for entering connecting-rod bolts head, gentle agitation device after amesdial reads no change, reads amesdial numerical value L2.
6) step 5) is repeated, L2 error is less than 0.001mm；
7) according to connecting-rod bolts original length L1 and the length L2 for tightening rear bolt, the elongation Δ of connecting-rod bolts is calculated
L, Δ L=L1-L2.
The utility model has the beneficial effects that：
1, the utility model delicate structure can directly use at engine assembly scene, and measurement accuracy is high, detects speed
Fastly.Solve narrow space after connecting-rod bolts are assembled on engine, undetectable problem.
2, the utility model is measured by the fixed connecting rod of coarse positioning pin, fixed test pin and activity detection pin by amesdial
Length before and after connecting rod bolt screwing, and then the elongation of connecting-rod bolts is calculated, measurement accuracy is high.Solves ultrasound examination
Height is required for bolt both ends of the surface, and high-power connecting-rod bolts both ends of the surface have preprocessing centre hole, end face is uneven, Data Detection
The problem of inaccuracy.
3, using repetition measurement as a result, reducing measurement error, more efficient guarantee connecting-rod bolts assembling quality.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar
Element or part are generally identified by similar appended drawing reference.In attached drawing, each element or part might not be according to actual ratios
It draws.
Fig. 1 is the structural schematic diagram of connecting rod ASSY；
Fig. 2 is the structural schematic diagram of the utility model；
Fig. 3 is the schematic diagram that the utility model measures connecting-rod bolts；
In attached drawing：1- cubing ontology；101- horizontal segment；The left vertical section of 102-；The right vertical section of 103-；2- amesdial；3- is solid
Determine test pin；4- activity detection pin；401- grades of disks；5- spring；6- shifting block；7- sliding slot；8- shift fork；9- shift fork spacer；10- shift fork
Pin shaft；11- handle；12- mounting blocks；13- coarse positioning pin.
Specific embodiment
The embodiments of the present invention are described in further detail with reference to the accompanying drawing.
In the present embodiment, the orientation or position of the instructions such as term " on " "lower" " left side " " right side " " preceding " " rear " " upper end " " lower end "
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing, rather than indication or suggestion meaning
Device or element must have a particular orientation, constructed or operated with specific orientation, therefore should not be understood as practical new to this
The limitation of type.
A kind of connecting-rod bolts as shown in Figure 2 extend measuring device, including cubing ontology 1, amesdial 2, the cubing
Ontology 1 is U-shaped structure comprising horizontal segment 101 and opposite left vertical section 102 and right vertical section 103, left and right vertical section
Pass through 101 integrally connected of horizontal segment.Two are successively arranged along horizontal section length direction in 101 inner wall of horizontal segment slightly to determine
Position pin 13.Corresponding fixed test pin 3 and activity detection pin 4 are respectively equipped on the opposite inner wall of left and right vertical section, it is perpendicular on a left side
It is provided with blind hole on the inner wall of straight section 102, perforative through-hole is provided on the inner wall of right vertical section 4, the fixed test pin 3 is fixed
It is mounted in the blind hole, 4 clearance fit of activity detection pin is in the through-hole.
The amesdial 2 is digital display dial gauge, is fixedly mounted on the outer wall of right vertical section 103 by a screw, thousand
Divide table contact and the activity detection pin 4 to contradict far from one end of fixed test pin to connect, to measure connecting-rod bolts length.
The activity detection pin 4 close to fixed test pin side periphery have shelves disk 401, this grade of disk 401 with it is described
Reset spring 5 is equipped between right 103 inner wall of vertical section.Periphery of the activity detection pin 4 close to 2 side of amesdial has edge
The shifting block 6 of radial protrusion axially offers sliding slot 7 along activity detection pin 4 in right 103 front of vertical section, which leads to described
Hole communicates, and the shifting block 6 is slidably matched with the sliding slot 7.
The shifting block 6 is connect with a shifting fork mechanism, and the shifting fork mechanism includes shift fork 8, shift fork spacer 9, shift fork pin shaft 10,
The shift fork 8 is rotatably coupled to 103 front of right vertical section.The shift fork spacer 9 is connected to by shift fork pin shaft 10
Described 8 one end of shift fork, the other end of the shift fork 8 far from the shift fork spacer 9 are open with fork-shaped, and the shifting block 6 is fastened on
In fork-shaped opening, the rotation of shift fork 8 drives activity detection pin 4 to slide axially along through-hole.
The connecting-rod bolts elongation measuring device further includes handle 11, and the handle 11 is fixedly mounted on the horizontal segment
101 lean on the outer wall of right 103 one end of vertical section.Specifically, the handle 11 is fixedly connected on a mounting blocks by a screw
On 12, then being fixedly mounted on mounting blocks 12 and handle 11 horizontal segment 101 entirely through multiple positioning pins and lean on into right vertical section
On the outer wall of 103 one end.
A kind of connecting-rod bolts elongation measuring method, includes the following steps：
1) connecting-rod bolts are manually tightened by technique requirement, and connecting-rod bolts C is screwed in gonnecting rod body A bolt hole, connecting rod cap B is made
It is bonded with connecting rod A, is just contacted with no connecting-rod bolts the brim of a hat face with connecting rod cap；
2) connecting rod is fitted into as shown in Figure 3 in measuring device, the side of connecting rod cap B is resisted against on coarse positioning pin 13, is pressed
Shift fork is inserted into fixed test pin 3 in the centre bore of connecting-rod bolts tail portion, unclamps shift fork, activity detection pin is in reset spring
In the centre bore on effect lower insertion connecting-rod bolts head, gentle agitation device after amesdial reads no change, reads amesdial number
Value L1, L1 are the original length of connecting-rod bolts C；
3) step 2) is repeated, L1 error is less than 0.001mm；
4) connecting rod is removed, is tightened connecting-rod bolts with regulation technique using defined torque；
5) connecting rod tightened being fitted into as shown in Figure 3 in measuring device, the side of connecting rod cap B is resisted against on coarse positioning pin,
By lower shift fork, in the centre bore for making fixed test pin insertion connecting-rod bolts tail portion, shift fork is unclamped, activity detection pin is in reset spring
Under the action of be inserted into connecting-rod bolts head centre bore in, gentle agitation device, amesdial read no change after, read amesdial
Numerical value L2.
6) step 5) is repeated, L2 error is less than 0.001mm；
7) according to connecting-rod bolts original length L1 and the length L2 for tightening rear bolt, the elongation of connecting-rod bolts C is calculated
Δ L, Δ L=L1-L2.
The utility model has the beneficial effects that：
1, the utility model delicate structure can directly use at engine assembly scene, and measurement accuracy is high, detects speed
Fastly.Solve narrow space after connecting-rod bolts are assembled on engine, undetectable problem.
2, the utility model is measured by the fixed connecting rod of coarse positioning pin, fixed test pin and activity detection pin by amesdial
Length before and after connecting rod bolt screwing, and then the elongation of connecting-rod bolts is calculated, measurement accuracy is high.Solves ultrasound examination
Height is required to bolt both ends of the surface, and high-power connecting-rod bolts both ends of the surface have preprocessing centre hole, end face is uneven, and Data Detection is not
Accurate problem.
3, using repetition measurement as a result, reducing measurement error, more efficient guarantee connecting-rod bolts assembling quality.
Finally it should be noted that：Above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that；
It can still modify to technical solution documented by previous embodiment, or to some or all of the technical features
It is equivalently replaced；And these are modified or replaceed, the utility model embodiment that it does not separate the essence of the corresponding technical solution
The range of technical solution should all cover in the claim of the utility model and the range of specification.
Claims (5)
1. a kind of connecting-rod bolts extend measuring device, including cubing ontology, amesdial, it is characterised in that：The cubing ontology
For U-shaped structure comprising horizontal segment and opposite left and right vertical section, left and right vertical section pass through the horizontal segment integrally connected；?
Corresponding fixed test pin and activity detection pin are respectively equipped on the opposite inner wall of left and right vertical section, on the inner wall of left vertical section
It is provided with blind hole, perforative through-hole is provided on the inner wall of right vertical section, the fixed test pin is fixedly mounted in the blind hole,
The activity detection pin clearance fit is in the through-hole；The amesdial is fixedly mounted on the outer of right vertical section by a screw
On wall, amesdial contact and the activity detection pin are contradicted far from one end of fixed test pin and are connected；The activity detection pin leans on
The periphery of nearly fixed test pin side has shelves disk, and reset spring is equipped between this grade of disk and the right vertical section inner wall；Institute
Stating periphery of the activity detection pin close to amesdial side has radially raised shifting block, examines in right vertical section front along activity
Pin shaft is surveyed to sliding slot is offered, which communicates with the through-hole, and the shifting block is slidably matched with the sliding slot, and shifting block and one
Shifting fork mechanism connection, shifting fork mechanism drive the activity detection pin to slide axially along the through-hole.
2. connecting-rod bolts according to claim 1 extend measuring device, it is characterised in that：The shifting fork mechanism includes dialling
Fork, shift fork spacer, shift fork pin shaft, the shift fork are rotatably coupled to the right vertical section front；The shift fork spacer passes through
In described shift fork one end, the other end of the shift fork far from the shift fork spacer is open shifting fork pin axis connection with fork-shaped, described
Shifting block is fastened in fork-shaped opening, and shift fork rotation drives activity detection pin to slide axially along the through-hole.
3. connecting-rod bolts according to claim 1 extend measuring device, it is characterised in that：On horizontal segment inner wall edge
Horizontal section length direction is successively arranged two coarse positioning pins.
4. connecting-rod bolts according to claim 1 extend measuring device, it is characterised in that：It further include handle, described
Hand is fixedly mounted on the horizontal segment and leans on the outer wall of right vertical section one end.
5. connecting-rod bolts according to claim 1 extend measuring device, it is characterised in that：The amesdial is digital display thousand
Divide table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820695530.6U CN208108959U (en) | 2018-05-11 | 2018-05-11 | A kind of connecting-rod bolts elongation measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820695530.6U CN208108959U (en) | 2018-05-11 | 2018-05-11 | A kind of connecting-rod bolts elongation measuring device |
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| Publication Number | Publication Date |
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| CN208108959U true CN208108959U (en) | 2018-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820695530.6U Active CN208108959U (en) | 2018-05-11 | 2018-05-11 | A kind of connecting-rod bolts elongation measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387159A (en) * | 2018-05-11 | 2018-08-10 | 重庆高金实业有限公司 | A kind of connecting-rod bolts elongation measuring device and measuring method |
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2018
- 2018-05-11 CN CN201820695530.6U patent/CN208108959U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387159A (en) * | 2018-05-11 | 2018-08-10 | 重庆高金实业有限公司 | A kind of connecting-rod bolts elongation measuring device and measuring method |
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 401122 No.1 Yunhui Road, North District, economic and Technological Development Zone, Yubei District, Chongqing Patentee after: Chongqing GAOJIN Industrial Co.,Ltd. Address before: 401122 No.1 Yunhui Road, North District, economic and Technological Development Zone, Yubei District, Chongqing Patentee before: CHONGQING GAOKIN INDUSTRY Co.,Ltd. |