CN208419796U - Engine bottom center measuring device - Google Patents
Engine bottom center measuring device Download PDFInfo
- Publication number
- CN208419796U CN208419796U CN201821233255.2U CN201821233255U CN208419796U CN 208419796 U CN208419796 U CN 208419796U CN 201821233255 U CN201821233255 U CN 201821233255U CN 208419796 U CN208419796 U CN 208419796U
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- CN
- China
- Prior art keywords
- guide rod
- measuring device
- mandril
- thimble
- engine
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
本实用新型公开了一种发动机下止点测量装置。该发动机下止点测量装置包括：百分表；导管，所述百分表通过抱箍锁紧螺钉和抱箍插设在导管的开口槽端；导杆；固定座，其为“几”字形结构，所述导杆通过衬套和衬套锁紧螺钉插设在固定座内；顶杆，其下端具有顶尖，中部具有台阶凸起；所述顶杆穿设在导杆内，上端与百分表抵接，所述顶杆的台阶凸起与导杆上端的台阶孔间穿设有弹簧；顶针，其上端具有限位凸缘，该限位凸缘的顶面具有顶尖孔；以及螺母，其螺接到所述导杆的下端，该螺母的内部轴向具有顶针穿孔；中部具有限位凸台。该发动机下止点测量装置通过螺栓安装在拆除缸盖的发动机机体顶面上，再通过百分表测量下止点位置，测量准确度高。
The utility model discloses an engine bottom dead center measuring device. The engine bottom dead center measuring device includes: a dial indicator; a guide tube, the dial indicator is inserted into the open groove end of the guide tube through a hoop locking screw and a hoop; a guide rod; structure, the guide rod is inserted into the fixed seat through the bushing and the bushing locking screw; the top rod has a top at the lower end and a stepped protrusion in the middle; the top rod is inserted in the guide rod, and the upper end is connected with The sub-tables are in contact, and a spring is pierced between the stepped protrusion of the ejector rod and the stepped hole at the upper end of the guide rod; the ejector pin has a limit flange on its upper end, and the top surface of the limit flange has a tip hole; and a nut , which is screwed to the lower end of the guide rod, the inner part of the nut has a thimble hole in the axial direction; the middle part has a limit boss. The engine bottom dead center measuring device is installed on the top surface of the engine body from which the cylinder head is removed through bolts, and then the bottom dead center position is measured by a dial indicator, and the measurement accuracy is high.
Description
Technical field
The utility model is about engine art, especially with regard to a kind of engine bottom center measuring device.
Background technique
Lower dead center is the important evidence for detecting engine in relation to data and when being adjusted, when Engine Assembling Quality is examined
It all needs to measure the accurate position in lower dead center, lower dead center is only examined using simple tool and by hand in current detection
It surveys, rotation crankshaft, near position when piston being lifted off crankshaft center minimum range, a people rotates crankshaft, and one is used screwdriver
Contact piston top, artificial feel piston are lifted off position when crankshaft center minimum range, as bottom dead center position, and this method needs
Two people operate simultaneously, and when measurement is manually felt, measurement result inaccuracy, and when measurement needs two people to operate simultaneously, waste of manpower with
Material resources.
The information disclosed in the background technology section is intended only to increase the understanding to the general background of the utility model, and
It is not construed as recognizing or implying in any form that information composition is already known to those of ordinary skill in the art existing
Technology.
Utility model content
The purpose of this utility model is to provide a kind of simple and reasonable engine bottom center measuring devices, this starts
Machine lower dead center measuring device is mounted on the engine body top surface for removing cylinder cap by bolt, then lower only by dial gauge measurement
Point position, accuracy of measurement are high；One is independently operable, time saving and energy saving；And different engine measurings can be suitble to by adjusting
Needs.
To achieve the above object, the utility model provides a kind of engine bottom center measuring device, comprising: dial gauge；
Conduit, the upper end are machined with open slot, and the dial gauge is plugged in the open slot end of conduit by anchor ear lock-screw and anchor ear；
Guide rod is threaded through the lower end of the conduit by the upper end, which is hollow structure, and upper end has stepped hole；Fixing seat,
For " several " character form structure, two sides are mounted on the engine body top surface for removing cylinder cap by bolt, and the guide rod passes through bushing
It is plugged in fixing seat with bushing lock-screw；Mandril, lower end have it is top, middle part have step protrusion；The mandril is worn
It is located in guide rod, upper end is abutted with dial gauge, is equipped with spring between the step protrusion and the stepped hole of guide rod upper end of the mandril；
Thimble, the upper end have defining flange, and the top surface of the defining flange has center hole, and the thimble is threaded through in guide rod, mandril
Top be plugged in center hole；And nut, it is screwed to the lower end of the guide rod, the inside of the nut axially has thimble
Perforation；There is positive stop lug boss, the mandril and thimble to be threaded through in guide rod by what nut can move up and down at middle part.
In a preferred embodiment, the two sides of fixing seat offer U-shaped long hole.
In a preferred embodiment, bushing is machined with open slot.
Compared with prior art, engine bottom center measuring device according to the present utility model has the following beneficial effects:
The engine bottom center measuring device is mounted on the engine body top surface for removing cylinder cap by bolt, then is surveyed by dial gauge
Bottom dead center position is measured, accuracy of measurement is high；One is independently operable, time saving and energy saving；And difference can be suitble to start by adjusting
The needs of machine measurement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to the engine bottom center measuring device of one embodiment of the utility model.
Fig. 2 is the schematic cross-sectional view according to the engine bottom center measuring device of one embodiment of the utility model.
Fig. 3 is the partial enlargement structural representation according to the engine bottom center measuring device of one embodiment of the utility model
Figure.
Fig. 4 is illustrated according to the guide rod sectional structure of the engine bottom center measuring device of one embodiment of the utility model
Figure.
Fig. 5 is the push rod structure schematic diagram according to the engine bottom center measuring device of one embodiment of the utility model.
Fig. 6 is the thimble structure schematic diagram according to the engine bottom center measuring device of one embodiment of the utility model.
Fig. 7 is the nut structure diagram according to the engine bottom center measuring device of one embodiment of the utility model.
Fig. 8 is the use structural schematic diagram according to the engine bottom center measuring device of one embodiment of the utility model.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical
Novel protection scope is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1 to Figure 3, according to the specific of the engine bottom center measuring device of the preferred embodiments of the present invention
Structure includes: dial gauge 1, anchor ear lock-screw 2, anchor ear 3, conduit 4, guide rod 5, fixing seat 6, spring 7, mandril 8, bushing 9, lining
Cover locking screw 10, thimble 11, nut 12.Wherein, dial gauge 1 is plugged in conduit 4 by anchor ear lock-screw 2 and anchor ear 3
Upper end, the lower end of conduit 4 is arranged in guide rod 5, and is plugged in fixing seat 6 by bushing 9 and bushing lock-screw 10, mandril 8
It is threaded through in guide rod 5 with thimble 11 by what nut 12 can move up and down, fixing seat 6 is mounted on by bolt and removes cylinder cap
On engine body top surface, turning crankshaft is adjusted to crankshaft lower dead center, unclamp bushing lock-screw 10, by device adjust to
Thimble 11 connects piston contact, and guarantees the stroke surplus of dial gauge, then turning crankshaft, when piston slowly moves down, with work
It fills in the thimble 11 of contact and slowly moves down, 1 contact of dial gauge is under the work of built-in spring with promotion mandril 8 with thimble 11
Slide downward, 1 pointer of dial gauge start turning, and when piston reaches lower dead center, 1 pointer of dial gauge reaches minimum value；It continues to rotate
When, piston will be slided up, and piston pushes thimble 11, mandril 8,1 contact upward sliding of dial gauge, and 1 total indicator reading of dial gauge becomes
Greatly, by rotating repeatedly, confirm the position of dial gauge least count value, as engine bottom center position.
Specifically, the upper end of conduit 4 is machined with open slot, and anchor ear 3 is set in the open slot end of conduit 4, anchor ear locking
Screw 2 is screwed to the side of anchor ear 3, and dial gauge 1 is plugged in the open slot end of conduit 4, by unclamping and tightening anchor ear locking screw
Follow closely 2 mountable dial gauges.
As shown in figure 4, guide rod 5 is threaded through the lower end of conduit 4 by upper end, and it is hollow structure, upper end has stepped hole,
Lower end has threaded hole.
Fixing seat 6 is " several " character form structure, and two sides offer U-shaped long hole, is mounted on by bolt and removes starting for cylinder cap
On machine body top surface, the body face installation site of different engines can be suitble to, do not fixed manually in measurement, one
It can complete to operate.The middle part of fixing seat 6 offers guide rod perforation, and the side of guide rod perforation offers locking screw nail hole, guide rod 5
It is plugged in the guide rod perforation of fixing seat 6 by bushing 9 and bushing lock-screw 10.
As shown in figure 5, the lower end of mandril 8 have it is top, middle part have step protrusion.Mandril 8 is threaded through in guide rod 5, on
End is abutted with dial gauge 1, and spring 7 is threaded through between the step protrusion of mandril 8 and the stepped hole of 5 upper end of guide rod, and guide rod 5 is machined with platform
Rank hole, mandril 8 are machined with step protrusion；Limit between mandril 8 and spring 7, guide rod 5, it is ensured that the sliding scale of device mandril
In the range of dial gauge, it ensure that dial gauge is not damaged.
As shown in fig. 6, the upper end of thimble 11 has defining flange, the top surface of defining flange has center hole, and thimble 11 is worn
It is located in guide rod 5, the top of mandril 8 is plugged in center hole.
As shown in fig. 7, the inside of nut 12 axially has thimble perforation；The periphery top of nut 12 have under guide rod 5
The external screw thread of the threaded hole adaptation at end, there is positive stop lug boss, mandril 8 and thimble 11 can be moved up and down by nut 12 at middle part
It is threaded through in guide rod 5.
Preferably, bushing 9 is machined with open slot, unclamps and tighten bushing lock-screw 10, and thimble 11 and piston is adjusted
The distance of contact is suitble to the engine measuring without stroke.
As shown in figure 8, fixing seat 6 is mounted on the engine body top surface for removing cylinder cap by bolt, is turned when measurement
Dynamic crankshaft is adjusted to crankshaft lower dead center, unclamps bushing lock-screw 10, device is adjusted to thimble 11 and connects piston contact, and
Guarantee the stroke surplus of dial gauge, then turning crankshaft, when piston slowly moves down, with the thimble 11 of piston contact and slowly
It moves down, 1 contact of dial gauge is under the work of built-in spring with promotion mandril 8 with 11 slide downward of thimble, 1 pointer of dial gauge
It starts turning, when piston reaches lower dead center, 1 pointer of dial gauge reaches minimum value；When continuing to rotate, piston will be slided up, living
Plug pushes thimble 11, mandril 8,1 contact upward sliding of dial gauge, and 1 total indicator reading of dial gauge becomes larger, and by rotating repeatedly, confirms
The position of dial gauge least count value, as engine bottom center position.
To sum up, which is mounted on the engine body top surface for removing cylinder cap by bolt,
Bottom dead center position is measured by dial gauge again, accuracy of measurement is high；One is independently operable, time saving and energy saving；And it can by adjusting
To be suitble to the needs of different engine measurings.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can be realized and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (3)
1. a kind of engine bottom center measuring device characterized by comprising
Dial gauge；
Conduit, the upper end are machined with open slot, and the dial gauge is plugged in the opening of conduit by anchor ear lock-screw and anchor ear
Slot end；
Guide rod is threaded through the lower end of the conduit by the upper end, which is hollow structure, and upper end has stepped hole；
Fixing seat is " several " character form structure, and two sides are mounted on the engine body top surface for removing cylinder cap by bolt, described
Guide rod is plugged in fixing seat by bushing and bushing lock-screw；
Mandril, lower end have it is top, middle part have step protrusion；The mandril is threaded through in guide rod, and upper end is supported with dial gauge
It connects, is equipped with spring between the step protrusion and the stepped hole of guide rod upper end of the mandril；
Thimble, the upper end have defining flange, and the top surface of the defining flange has center hole, and the thimble is threaded through in guide rod,
The top of mandril is plugged in center hole；And
Nut, is screwed to the lower end of the guide rod, and the inside of the nut axially has thimble perforation；Middle part has limit convex
Platform, the mandril and thimble are threaded through in guide rod by what nut can move up and down.
2. engine bottom center measuring device as described in claim 1, which is characterized in that the two sides of the fixing seat offer
U-shaped long hole.
3. engine bottom center measuring device as described in claim 1, which is characterized in that the bushing is machined with open slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821233255.2U CN208419796U (en) | 2018-08-01 | 2018-08-01 | Engine bottom center measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821233255.2U CN208419796U (en) | 2018-08-01 | 2018-08-01 | Engine bottom center measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208419796U true CN208419796U (en) | 2019-01-22 |
Family
ID=65123309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821233255.2U Expired - Fee Related CN208419796U (en) | 2018-08-01 | 2018-08-01 | Engine bottom center measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208419796U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917531A (en) * | 2018-08-01 | 2018-11-30 | 广西玉柴机器股份有限公司 | Engine bottom center measuring device |
| CN114739249A (en) * | 2022-04-14 | 2022-07-12 | 福建龙溪轴承(集团)股份有限公司 | Spherical surface measuring device that beats |
-
2018
- 2018-08-01 CN CN201821233255.2U patent/CN208419796U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917531A (en) * | 2018-08-01 | 2018-11-30 | 广西玉柴机器股份有限公司 | Engine bottom center measuring device |
| CN114739249A (en) * | 2022-04-14 | 2022-07-12 | 福建龙溪轴承(集团)股份有限公司 | Spherical surface measuring device that beats |
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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 |
Granted publication date: 20190122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |