CN112325753B - Safety detection device for marine diesel engine cylinder cover - Google Patents
Safety detection device for marine diesel engine cylinder cover Download PDFInfo
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- CN112325753B CN112325753B CN202011162907.XA CN202011162907A CN112325753B CN 112325753 B CN112325753 B CN 112325753B CN 202011162907 A CN202011162907 A CN 202011162907A CN 112325753 B CN112325753 B CN 112325753B
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- main shaft
- wheel
- spring
- sleeve
- carriage release
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/003—Measuring of motor parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a safety detection device for a marine diesel engine cylinder cover, which comprises a main shaft, a sleeve, a detection lever and a dial indicator, wherein an annular pit is formed on the main shaft, the sleeve is movably arranged in the annular pit, through holes are formed in opposite side edges of the sleeve, a wheel carrier is arranged at the through holes, a pressure rod is movably arranged on the wheel carrier, a limiting wheel is arranged at the inner end of the pressure rod, the axial lead of the limiting wheel is parallel to the axial lead of the main shaft, the wheel surface of the limiting wheel is in extrusion contact with or separated from the axial surface of the main shaft through the movement of the pressure rod, and a locking piece for locking the position of the pressure rod is arranged on the pressure rod. The detection device is convenient to operate, can quickly realize the coaxiality detection of the valve and the guide pipe hole, and provides important guarantee for the quality and safe use of the cylinder cover; in addition, the detection device can also correspondingly adjust the aperture of the guide pipe hole and the distance between the guide pipe hole and the valve seat, so that the detection work of different types of cylinder covers is realized, and the detection precision is ensured.
Description
Technical Field
The invention relates to the technical field of diesel engine production, in particular to a safety detection device for a marine diesel engine cylinder cover.
Background
The cylinder cover in the marine diesel engine is used for sealing the cylinder, forming a combustion space together with the piston and bearing high-temperature and high-pressure fuel gas. The cylinder head is subjected to gas forces and mechanical loads caused by fastening the cylinder bolts, and is also subjected to very high thermal loads due to contact with high temperature combustion gases, and in order to ensure good sealing of the cylinder, the cylinder head cannot be damaged nor deformed. For this reason, the cylinder head should have sufficient strength and rigidity.
The cylinder cover is an important part of the diesel engine, and the coaxiality of the valve and the guide pipe hole is a key point of cylinder cover parts, and plays an important role in the performance and safety of the diesel engine. If the coaxiality of the valve and the guide pipe hole is poor, the sealing of a combustion chamber of the diesel engine is poor, and a series of major quality and safety problems such as combustion deterioration, power reduction, valve burning loss and the like of the diesel engine are caused. Therefore, when the cylinder cover is overhauled, the coaxiality of the valve and the guide pipe hole needs to be safely detected. The traditional measuring method is that the cylinder cover is hung on a vertical lathe through a special lifting appliance, the valve mounting hole is used as a positioning hole, the dial indicator is clamped on a power main shaft of the vertical lathe after the cylinder cover is adjusted and mounted, and the coaxiality of the guide pipe hole is measured by rotating the main shaft for one circle.
Disclosure of Invention
The invention aims to provide a safety detection device for a marine diesel engine cylinder cover, which overcomes the defects of low detection efficiency and poor accuracy of a traditional detection device for coaxiality of a valve and a guide pipe hole in the diesel engine cylinder cover.
The invention realizes the purpose through the following technical scheme:
the utility model provides a safety inspection device of marine diesel engine cylinder head, includes the main shaft to and establish the sleeve on the main shaft to and establish detection lever and percentage table on the sleeve, be formed with annular pit on the main shaft, the sleeve activity is established in the annular pit, and the opposition side position on the sleeve is opened there is the opening department is equipped with the wheel carrier, the activity is equipped with the depression bar on the wheel carrier, spacing wheel is installed to the end in the depression bar, the axial lead of spacing wheel is parallel with the axial lead of main shaft, makes spacing wheel face and main shaft axial plane compressive contact or separation through the activity of depression bar, and is equipped with on the depression bar and is used for carrying out the locking piece of position locking to the depression bar when spacing wheel face and main shaft axial plane compressive contact.
The improvement is that the side of depression bar is opened flutedly, the side of wheel carrier is opened flutedly, the locking piece comprises wedge, support column, spring, the spring is erect in the recess, the wedge passes through the support column and establishes the top at the spring, and when the wedge blocked downthehole under the support of spring card, the realization was locked the position of depression bar.
The further improvement lies in that the limiting wheel is provided with a rubber friction wheel surface.
The improved structure is characterized in that the main shaft is internally of a hollow structure, the main shaft is internally provided with a central rod and a moving rod, the rear end of the central rod is connected with a rotary handle, the front end side of the central rod is provided with a threaded part, the rear end of the moving rod is provided with a screw hole, the central rod is screwed into the screw hole of the moving rod through the threaded part, the rotating of the central rod can drive the moving rod to move forwards or backwards, different positions of the front end side of the moving rod are provided with at least two sets of extension supporting pieces, each set of extension supporting pieces consists of three or four supporting rods, the supporting rods in each set of extension supporting pieces are uniformly distributed in the same circumferential line position on the side surface of the moving rod, the supporting rods are rotatably connected with the side surface of the moving rod through spring shafts, the main shaft is provided with through holes at positions corresponding to the supporting rods, the supporting rods are extended out from the through hole positions in one-to-one correspondence, the supporting rods are always contacted with the through hole front side holes under the elastic action of the spring shafts, and when the moving rod moves forwards, all the supporting rods are synchronously extended under the blocking action of the elastic action of the spring shafts, and when the moving rod moves backwards.
The improved structure is characterized in that a convex ring is arranged on the outer surface of the central rod, the central rod is rotatably matched with the main shaft through the convex ring, a flat key is arranged on the outer surface of the moving rod, and the moving rod is movably matched with the main shaft through the flat key.
The further improvement is that the through hole is internally provided with a cambered surface protrusion at a position for blocking the supporting rod.
The further improvement is that the expansion support has three groups.
In a further improvement, the free end of the support rod is formed with a knob.
The invention has the beneficial effects that: the detection device is convenient to operate, can quickly realize the coaxiality detection of the valve and the guide pipe hole, and provides important guarantee for the quality and the safe use of the cylinder cover; in addition, the detection device can also correspondingly adjust the aperture of the guide pipe hole and the distance between the guide pipe hole and the valve seat, so that the detection work of different types of cylinder covers is realized, and the detection precision is ensured.
Drawings
FIG. 1 is an axial longitudinal cross-sectional view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic view of the front end structure of the spindle;
FIG. 5 is a schematic illustration of the present invention during an assay process;
in the figure: 1. a main shaft; 2. a sleeve; 3. a detection lever; 4. a dial indicator; 5. a circumferential pit; 6. a port; 7. a wheel carrier; 8. a pressure lever; 9. a limiting wheel; 10. a groove; 11. a clamping hole; 12. a wedge block; 13. a support pillar; 14. a spring; 15. a center pole; 16. a travel bar; 17. rotating the grip; 18. a threaded portion; 19. a screw hole; 20. a support bar; 21. a spring shaft; 22. perforating; 23. a convex ring; 24. a flat bond; 25. the cambered surface is protruded; 26. a spherical protrusion; 100. a valve guide hole; 200. a valve seat.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Referring to fig. 1 to 4, a safety detection device for a cylinder head of a marine diesel engine, including a main shaft 1, a sleeve 2 disposed on the main shaft 1, a detection lever 3 and a dial indicator 4 disposed on the sleeve 2, a circumferential pit 5 is formed on the main shaft 1, the sleeve 2 is movably disposed in the circumferential pit 5, the surface of the circumferential pit 5 is smooth, the length of the circumferential pit 5 is greater than that of the sleeve 2, a through hole 6 is formed in an opposite side position on the sleeve 2, a wheel carrier 7 is disposed at the through hole 6, a pressure lever 8 is movably disposed on the wheel carrier 7, a limit wheel 9 is mounted at an inner end of the pressure lever 8, an axial line of the limit wheel 9 is parallel to an axial line of the main shaft 1, a wheel face of the limit wheel 9 is in pressing contact with or separated from an axial face of the main shaft 1 through movement of the pressure lever 8, and a locking member for locking the pressure lever 8 when the wheel face of the limit wheel 9 is in pressing contact with the axial face of the main shaft 1 is disposed on the pressure lever 8. During the use, sleeve 2 can slide for main shaft 1, can be according to the position that detects lever 3 is adjusted to the distance between pipe hole and the valve seat from this, only need press depression bar 8 after adjusting, with spacing 9 wheel faces and 1 axial plane extrusion contact of main shaft, reuse locking piece locks, sleeve 2 can't slide for main shaft 1 this moment, only can rotate, can detect work.
According to the invention, the side edge of the pressure lever 8 is provided with the groove 10, the side edge of the wheel carrier 7 is provided with the clamping hole 11, the locking piece consists of the wedge-shaped block 12, the supporting column 13 and the spring 14, the spring 14 is erected in the groove 10, the wedge-shaped block 12 is arranged at the top end of the spring 14 through the supporting column 13, when the wedge-shaped block 12 is clamped in the clamping hole 11 under the support of the spring 14, the position of the pressure lever 8 is locked, and when the locking is not required, the wedge-shaped block 12 only needs to be pressed and exits from the clamping hole 11.
In particular, the limiting wheel 9 is provided with a rubber friction wheel surface which can increase sliding friction force, so that the extrusion cannot slide relative to the main shaft 1 after the extrusion is performed on the shaft surface of the main shaft 1, in addition, the rubber has certain elasticity, so that a stable extrusion effect can be provided, after the wedge-shaped block 12 is pressed, the pressing rod 8 can be outwards popped out through the elasticity, and the wedge-shaped block 12 is quickly separated from the clamping hole 11.
In the invention, the main shaft 1 is of a hollow structure, a central rod 15 and a moving rod 16 are arranged in the main shaft 1, the rear end of the central rod 15 is connected with a rotating handle 17, the front end side surface of the central rod 15 is provided with a threaded part 18, the rear end of the moving rod 16 is provided with a threaded hole 19, the central rod 15 is screwed into the threaded hole 19 of the moving rod 16 through the threaded part 18, the central rod 15 rotates to drive the moving rod 16 to move forwards or backwards, at least two groups of expanding support members are arranged at different positions on the front end side surface of the moving rod 16, each group of expanding support members is composed of three or four support rods 20, the support rods 20 in each group of expanding support members are uniformly distributed at the same circumferential line on the side surface of the moving rod 16, the support rods 20 are rotatably connected with the side surface of the moving rod 16 through spring shafts 21, the main shaft 1 is provided with through holes 22 at positions corresponding to the support rods 20, the support rods 20 extend out from the through holes 22 one to one, the support rods 20 are always contacted with the front side surfaces of the through holes 22 under the elastic action of the spring shafts 21, and all the support rods 20 are folded under the action of the elastic force of the spring shafts 21 when the moving rod 16 moves forwards. In the expanding and collapsing process, the free ends of all the support rods 20 are always located on the same radius of the cylindrical surface, so that a stable supporting effect can be provided, and the moving rod 16 and the central rod 15 automatically fall on the circular axis.
In addition, the outer surface of the central rod 15 is provided with a convex ring 23, the central rod 15 is rotatably matched with the main shaft 1 through the convex ring 23, the central rod 15 cannot slide back and forth to avoid falling off, the outer surface of the moving rod 16 is provided with a flat key 24, and the moving rod 16 is movably matched with the main shaft 1 (inner key groove) through the flat key 24 and is used for preventing the moving rod 16 from rotating along with the central rod 15 and cannot move back and forth.
In particular, the through hole 22 is provided with a protrusion 25 having a curved surface at a position for blocking the supporting rod 20, so that the tip contact can be avoided during the expanding and contracting process, and a good blocking effect is always provided for the supporting rod 20, and the free end of the supporting rod 20 is provided with a protrusion 26 having a spherical shape, which is also used for avoiding the tip contact, and the expanding and contracting process can be more smooth without sudden change.
The working principle of the detection device is as follows: referring to fig. 5, the main shaft 1 is first placed into the valve guide hole 100 of the cylinder head, the main shaft 1 is then held still, the rotating handle 17 is rotated to rotate the center rod 15, and further the moving rod 16 is driven to move forward, so that all the support rods 20 expand synchronously and at the same angle, the free ends of the support rods 20 abut against the hole wall of the valve guide hole 100, and when the rotating handle 17 cannot be rotated, the support is stopped, at this time, all the support rods 20 complete the support, and the main shaft 1 automatically falls on the position coaxial with the valve guide hole 100; and moving the sleeve 2 forwards again to enable the measuring head of the detection lever 3 to be in contact with the conical surface of the valve seat 200, then pressing the pressing rod 8, fixing the front position and the rear position of the sleeve 2 through the limiting wheel 9, rotating the sleeve 2 for a circle at the moment because the other end of the detection lever 3 is in contact with the measuring head of the dial indicator 4, and enabling the reading of the corresponding dial indicator 4 to be the coaxiality jumping quantity of the valve and the guide pipe hole in the cylinder cover to finish detection. After the detection is finished, the wedge-shaped block 12 is pressed, the limiting wheel 9 is withdrawn, and the rotating handle 17 is rotated reversely, so that all the support rods 20 are folded, and the detection tool can be pulled out.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (5)
1. The utility model provides a safety inspection device of marine diesel cylinder head, includes main shaft (1) to and establish sleeve (2) on main shaft (1), and establish detection lever (3) and percentage table (4) on sleeve (2), its characterized in that: the main shaft (1) is provided with a ring-shaped pit (5), the sleeve (2) is movably arranged in the ring-shaped pit (5), the opposite side edge position on the sleeve (2) is provided with a through hole (6), a wheel carrier (7) is arranged at the through hole (6), a pressure lever (8) is movably arranged on the wheel carrier (7), the inner end of the pressure lever (8) is provided with a limit wheel (9), the axial lead of the limit wheel (9) is parallel to the axial lead of the main shaft (1), the wheel surface of the limit wheel (9) is in extrusion contact or separation with the axial surface of the main shaft (1) through the movement of the pressure lever (8), and a locking piece for locking the position of the pressure lever (8) when the wheel surface of the limit wheel (9) is in extrusion contact with the axial surface of the main shaft (1) is arranged on the pressure lever (8);
the side of the pressure lever (8) is provided with a groove (10), the side of the wheel carrier (7) is provided with a clamping hole (11), the locking piece consists of a wedge-shaped block (12), a supporting column (13) and a spring (14), the spring (14) is erected in the groove (10), the wedge-shaped block (12) is arranged at the top end of the spring (14) through the supporting column (13), when the wedge-shaped block (12) is clamped into the clamping hole (11) under the support of the spring (14), the position locking of the pressure lever (8) is realized, and the limiting wheel (9) is provided with a rubber friction wheel surface;
the utility model discloses a portable computer, including main shaft (1), main shaft (1) inside is hollow structure, and is equipped with well core rod (15) and carriage release lever (16) in main shaft (1) inside, the rear end of well core rod (15) is connected with rotatory handle (17), and the front end of well core rod (15) side is equipped with screw thread portion (18), screw hole (19) have been opened to the rear end of carriage release lever (16), well core rod (15) are through screw thread portion (18) screw in screw hole (19) of carriage release lever (16), and well core rod (15) rotation can drive carriage release lever (16) forward or backward movement, the different positions of the front end side of carriage release lever (16) are equipped with at least two sets of extension support piece, and every set of extension support piece comprises three or four bracing pieces (20), bracing piece (20) evenly distributed in every set of extension support piece is the same line department in carriage release lever (16) side, and bracing piece (20) all pass through spring shaft (21) and carriage release lever (16) side rotatable coupling, main shaft (1) all open perforation (22) in the position department that each bracing piece (20) corresponds, bracing piece (20) one by one, the one-to one from the spring shaft (22) the perforation effect, under the action of spring shaft (22), the perforation (22) is followed the spring shaft (21) and the perforation, the expansion support piece (22) all time the perforation effect of expansion support piece (20), when the moving rod (16) moves backwards, all the support rods (20) are synchronously folded under the elastic action of the spring shaft (21).
2. The safety inspection device for the cylinder head of the marine diesel engine according to claim 1, wherein: the surface of well core rod (15) is equipped with bulge loop (23), but well core rod (15) pass through bulge loop (23) and main shaft (1) rotatable cooperation, the surface of carriage release lever (16) is equipped with flat key (24), and carriage release lever (16) are through flat key (24) and main shaft (1) movable fit.
3. The safety inspection device for the cylinder head of the marine diesel engine according to claim 1, wherein: the through hole (22) is internally provided with a cambered surface protrusion (25) at a position for blocking the support rod (20).
4. The safety inspection device for the cylinder head of the marine diesel engine according to claim 1, wherein: there are three sets of said expansion supports.
5. The safety inspection device for the cylinder head of the marine diesel engine according to claim 1, wherein: the free end of the support rod (20) is formed with a spherical protrusion (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011162907.XA CN112325753B (en) | 2020-10-27 | 2020-10-27 | Safety detection device for marine diesel engine cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011162907.XA CN112325753B (en) | 2020-10-27 | 2020-10-27 | Safety detection device for marine diesel engine cylinder cover |
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| Publication Number | Publication Date |
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| CN112325753A CN112325753A (en) | 2021-02-05 |
| CN112325753B true CN112325753B (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011162907.XA Active CN112325753B (en) | 2020-10-27 | 2020-10-27 | Safety detection device for marine diesel engine cylinder cover |
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| CN211346596U (en) * | 2019-12-23 | 2020-08-25 | 台州市瑞谷物联科技有限公司 | Industrial equipment state monitoring device |
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| CN102927922B (en) * | 2012-10-12 | 2014-11-19 | 中北大学 | System for measuring inner diameter of tubular workpiece |
| CN203385380U (en) * | 2013-07-26 | 2014-01-08 | 南车戚墅堰机车有限公司 | Cylinder cap valve and conduit hole coaxiality detection device |
| CN106705801B (en) * | 2017-01-06 | 2019-04-19 | 合肥工业大学 | A kind of three-jaw centering internal diameter measuring device and its measurement method |
| CN107631674A (en) * | 2017-10-31 | 2018-01-26 | 广西玉柴机器股份有限公司 | A kind of coaxiality check fixture of valve seat of cylinder head hole to conduit bottom outlet |
| US11333569B2 (en) * | 2018-09-14 | 2022-05-17 | Akron Special Machinery, Inc. | Dynamic balancer with a frameless motor drive |
| CN109276864B (en) * | 2018-12-02 | 2020-07-28 | 金华芃泓商贸有限公司 | Base plate of table tennis bat |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202622438U (en) * | 2012-06-29 | 2012-12-26 | 湖北三江航天红阳机电有限公司 | Adjustable self-centering internal supporting device of thin-wall part |
| CN207515753U (en) * | 2017-12-06 | 2018-06-19 | 内蒙古北方重工业集团有限公司 | Deep hole detection self-centering supporting mechanism |
| CN207918155U (en) * | 2018-03-14 | 2018-09-28 | 广州拓派工业机器人装备有限公司 | A kind of cable traction equipment |
| CN211346596U (en) * | 2019-12-23 | 2020-08-25 | 台州市瑞谷物联科技有限公司 | Industrial equipment state monitoring device |
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| CN112325753A (en) | 2021-02-05 |
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