CN107859542B - Engine valve clearance adjusting device - Google Patents
Engine valve clearance adjusting device Download PDFInfo
- Publication number
- CN107859542B CN107859542B CN201711291640.2A CN201711291640A CN107859542B CN 107859542 B CN107859542 B CN 107859542B CN 201711291640 A CN201711291640 A CN 201711291640A CN 107859542 B CN107859542 B CN 107859542B
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- Prior art keywords
- sleeve
- screwdriver
- hole
- adjusting
- spring
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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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/20—Adjusting or compensating clearance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention discloses an engine valve clearance adjusting device, which comprises a sleeve and a screwdriver inserted into an inner cavity of the sleeve, wherein the inner cavity of the sleeve is provided with a taper hole capable of driving the screwdriver to rotate by friction force, correspondingly, the screwdriver is provided with a conical surface matched with the taper hole, one side of the conical surface is sleeved with a spring for pushing the screwdriver to the taper hole and an adjusting piece which is connected with the sleeve and can adjust the elasticity of the spring, two ends of the screwdriver are respectively provided with a guide piece and a handle, one end of the sleeve corresponding to the adjusting piece is sleeved with a connecting sleeve matched with a spanner, and the inner cavity of the other end of the sleeve is provided with a hexagonal hole. The conical hole and the conical surface are matched to provide larger friction force, the adjusting bolt of the air valve can be effectively rotated to adjust the air valve clearance, the guide piece can enable the screwdriver to be conveniently and accurately clamped in the groove on the head of the adjusting bolt, and the working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of engine valve clearance adjustment, in particular to an engine valve clearance adjustment device.
Background
In the assembly process of the diesel engine, the process requirement of the valve clearance is generally between 0.35 and 0.45 plus or minus 0.05mm, and the valve clearance needs to be detected and adjusted by a process control method so as to be controlled within a qualified tolerance range. The valve clearance of the engine is mainly adjusted by workers through tools such as a screwdriver, a box spanner and the like, after a crankshaft is manually rotated to the position of a piston upper dead center, a fixing nut of a valve adjusting bolt is loosened through tools such as the box spanner and the like, then the adjusting bolt is reversely loosened through the screwdriver, then a feeler gauge is plugged into a valve clearance position between a rocker arm head and a valve rod which are required to be adjusted, the adjusting bolt is rotated by one hand, the feeler gauge is pulled by the other hand until the feeler gauge is slightly resisted, the fixing nut is screwed through tools such as the box spanner and the like by the other hand until the feeler gauge is kept unchanged, the relative position of the adjusting bolt and the rocker arm head is locked, the feeler gauge is taken away to rotate the crankshaft, and then the adjustment of the next valve clearance is continuously carried out.
At present, a valve clearance adjusting sleeve which integrates two operation actions of rotating an adjusting bolt and locking a fixing nut and is automatically completed by one action appears, the valve clearance adjusting sleeve drives the sleeve to rotate through an electric or pneumatic wrench, the sleeve drives a screwdriver in the sleeve to rotate through friction, the screwdriver rotates to screw the adjusting bolt tightly, after the adjusting bolt is screwed in place, the sleeve is manually pressed down, the sleeve is separated from the contact surface of the screwdriver, meanwhile, the sleeve is sleeved into the fixing nut, the fixing nut is driven to rotate, and finally the position of the fixing nut and the adjusting bolt is locked.
Because the difference of each engine part is big, the uniformity is low, and the technical scheme of the valve clearance adjusting sleeve has the following defects:
1. when foreign matters such as scrap iron exist between threads between the fixing nut and the adjusting bolt, friction force between the threads is increased, and the adjusting bolt can rotate along with the fixing nut when the fixing nut is screwed down, so that an error of a valve clearance is increased;
2. foreign matters such as scrap iron and the like are easy to exist among threads of the valve bridge, and about 5% of adjusting bolts need to be manually interfered and adjusted in place because friction torque between a screwdriver and a sleeve is insufficient to drive the adjusting bolts to rotate;
3. the screwdriver head lacks the guide piece, and the difficult card of screwdriver head is in the fluting on adjusting bolt head, influences production efficiency.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an engine valve clearance adjusting device capable of effectively rotating a valve adjusting bolt and a fixing nut to adjust a valve clearance and improving working efficiency aiming at the defects in the prior art.
The technical scheme of the invention is as follows: the utility model provides an engine valve clearance adjusting device, includes the sleeve with peg graft in the bottle opener of sleeve inner chamber, sleeve inner chamber be equipped with can utilize frictional force drive bottle opener rotatory taper hole, correspondingly, bottle opener on be equipped with the conical surface of taper hole looks adaptation, cover respectively on the bottle opener of conical surface one side be equipped with this bottle opener push to the spring of taper hole and with telescopic connection and can adjust the regulating part of spring elasticity, the both ends of bottle opener are equipped with guide part and handle respectively, on the sleeve with the corresponding one end cover of regulating part is equipped with the adapter sleeve with spanner complex, the inner chamber of the other end is equipped with the hexagonal hole.
As a further improvement, the guide piece is sleeved on the periphery of the screwdriver close to one end of the hexagonal hole.
Further, the screwdriver passes through the connecting sleeve and is connected with the handle.
Further, a transition hole is arranged in the inner cavity of the sleeve between the hexagonal hole and the taper hole, and correspondingly, an excircle in clearance fit with the transition hole is arranged on the screwdriver.
Further, a long hole is formed in the inner cavity of the sleeve at the outer side of the taper hole, and the spring and the adjusting piece are located in the long hole.
Further, the adjusting piece is in threaded connection with the sleeve, and the adjusting piece is respectively provided with a stepped hole sleeved with the spring and an adjusting groove for adjusting the position of the adjusting piece.
Further, the connecting sleeve is in threaded connection with the sleeve, and one end of the connecting sleeve is respectively provided with a hexagonal connecting part connected with a wrench and a locking nut for locking the wrench.
Further, the connecting sleeve covers the outlet of the long hole, and a through hole in clearance fit with the screwdriver is arranged on the connecting sleeve.
Further, the sleeve, the screwdriver, the guide piece, the spring, the adjusting piece, the connecting sleeve and the handle are coaxially arranged.
Advantageous effects
Compared with the prior art, the invention has the advantages that:
1. the contact area is increased by the cooperation of the taper hole and the conical surface, larger friction force can be provided, and the adjusting bolt of the valve can be effectively rotated to adjust the valve clearance;
2. the guide piece can enable the screwdriver to be conveniently and accurately clamped in the groove on the adjusting bolt head, so that the working efficiency is improved;
3. the screwdriver is kept fixed by the handle, the adjusting bolt can be effectively prevented from rotating along with the fixing nut when the fixing nut is screwed down, the air valve clearance precision is guaranteed, and when the friction torque between the screwdriver and the sleeve is insufficient to drive the adjusting bolt to rotate, the adjusting bolt can be rotated by the handle to be adjusted.
Drawings
FIG. 1 is a schematic view of the present invention in full section in a front view;
FIG. 2 is a schematic view of a front view of the sleeve of the present invention;
FIG. 3 is a schematic left-hand view of the sleeve of the present invention;
fig. 4 is a schematic view of the front view of the screwdriver of the present invention in full section;
FIG. 5 is a schematic diagram of a front view of a connecting sleeve of the present invention;
FIG. 6 is a schematic view in full section of the guide of the present invention;
fig. 7 is a schematic diagram of the front view of the adjusting member of the present invention.
Wherein: 1-sleeve, 2-screwdriver, 3-taper hole, 4-conical surface, 5-spring, 6-regulating piece, 7-guiding piece, 8-hexagonal hole, 9-adapter sleeve, 10-horn hole, 11-hexagonal connecting part, 12-lock nut, 13-step hole, 14-regulating groove, 15-handle, 16-transition hole, 17-screwdriver head, 18-excircle, 19-conical surface step, 20-step face, 21-slot hole, 22-through hole.
Detailed Description
The invention will be further described with reference to specific embodiments in the drawings.
Referring to fig. 1-7, an engine valve clearance adjusting device comprises a sleeve 1 and a screwdriver 2 inserted into the inner cavity of the sleeve 1, wherein a taper hole 3 capable of driving the screwdriver 2 to rotate by friction force is formed in the inner cavity of the sleeve 1, correspondingly, a conical surface 4 matched with the taper hole 3 is formed in the screwdriver 2, the contact area is enlarged by matching the taper hole 3 with the conical surface 4, larger friction force can be provided, and an adjusting bolt of an air valve can be effectively rotated to adjust the valve clearance; the screwdriver 2 on one side of the conical surface 4 is respectively sleeved with a spring 5 pushing the screwdriver 2 to the conical hole 3 and an adjusting piece 6 which is connected with the sleeve 1 and can adjust the elasticity of the spring 5, one end of the spring 5 props against a conical surface step 19 at the large end of the conical surface 4 on the screwdriver 2, the other end props against the adjusting piece 6, the relative displacement between the adjusting piece 6 and the screwdriver 2 can be adjusted to change the compression amount of the spring 5, so that the elasticity of the spring 5 to the screwdriver 2 is changed, the conical surface 4 can be tightly matched with the conical hole 3 by means of the elasticity of the spring 5, when the sleeve 1 rotates, the screwdriver 2 is driven to rotate by friction torque between the conical surface 4 and the conical hole 3, and the screwdriver 2 can flexibly move along the axial direction in the sleeve 1 under the condition of overcoming the elasticity of the spring 5; the two ends of the screwdriver 2 are respectively provided with the guide piece 7 and the handle 15, the guide piece 7 can enable the screwdriver 2 to be conveniently and accurately clamped in the groove on the head of the adjusting bolt, the working efficiency is improved, the handle 15 is utilized to keep the screwdriver 2 fixed, the adjusting bolt can be effectively prevented from rotating along with the fixing nut when the fixing nut is screwed down, the air valve clearance precision is ensured, and when the friction torque between the screwdriver 2 and the sleeve 1 is insufficient to drive the adjusting bolt to rotate, the handle 15 can be utilized to rotate the adjusting bolt for adjustment; one end of the sleeve 1 corresponding to the adjusting piece 6 is sleeved with a connecting sleeve 9 matched with the wrench, the inner cavity of the other end is provided with a hexagonal hole 8, the hexagonal hole 8 of the sleeve 1 is used for locking a fixing nut of a valve adjusting bolt, the connecting sleeve 9 can be connected with a flat electric wrench or a flat pneumatic wrench, and the adjusting device is driven by the electric wrench or the pneumatic wrench to adjust a valve gap, so that the working intensity of workers can be effectively reduced, and the working efficiency can be improved.
The guide piece 7 is sleeved on the periphery of the bottle opener 2 close to one end of the hexagonal hole 8, the guide piece 7 is fixed on the bottle opener 2 through threaded connection and rotates along with the bottle opener 2, a horn hole 10 is formed in the guide piece 7, the horn hole 10 can be conveniently sleeved on the periphery of a valve adjusting bolt, the bottle opener 2 is guided to be centered with the adjusting bolt, the bottle opener head 17 of the bottle opener 2 can be accurately clamped in a groove on the adjusting bolt head, the bottle opener 2 penetrates through the connecting sleeve 9 to be connected with the handle 15, and the bottle opener 2 and the handle 15 are connected through threaded connection, so that the bottle opener is convenient to assemble and disassemble.
The inner cavity of the sleeve 1 between the hexagonal hole 8 and the taper hole 3 is provided with a transition hole 16, correspondingly, the screwdriver 2 is provided with an outer circle 18 in clearance fit with the transition hole 16, the transition hole 16 can limit the radial deflection of the screwdriver 2, and the rotation precision of the screwdriver 2 is improved; the inner cavity of the sleeve 1 outside the taper hole 3 is provided with a long hole 21, the spring 5 and the adjusting piece 6 are both positioned in the long hole 21, the adjusting piece 6 is in threaded connection with the sleeve 1, the adjusting piece 6 is respectively provided with a stepped hole 13 sleeved with the spring 5 and an adjusting groove 14 for adjusting the displacement of the adjusting piece 6, the spring 5 is inserted into one large end of the stepped hole 13 and is contacted with a stepped surface 20 of the stepped hole 13, the adjusting groove 14 is positioned on the outer end surface of the adjusting piece 6, and the adjusting piece 6 is used for rotating to adjust the relative position between the adjusting piece 6 and the sleeve 1, so that the compression amount of the spring 5 is adjusted.
The connecting sleeve 9 is in threaded connection with the sleeve 1, one end of the connecting sleeve 9 is respectively provided with a hexagonal connecting part 11 connected with a wrench and a locking nut 12 for locking the wrench, the hexagonal connecting part 11 is a hexagonal surface arranged on the periphery of the connecting sleeve 9, and an external threaded column matched with the locking nut 12 is arranged on the outer side of the hexagonal connecting part 11; the connecting sleeve 9 covers the outlet of the long hole 21, and the connecting sleeve 9 is provided with a through hole 22 which is in clearance fit with the screwdriver 2, so that dust, scrap iron and the like can be prevented from entering the long hole 21, and the stability of the spring 5 and the adjusting piece 6 is improved; the sleeve 1, the screwdriver 2, the guide piece 7, the spring 5, the adjusting piece 6, the connecting sleeve 9 and the handle 15 are coaxially arranged, so that the whole structure is compact, and the rotation precision and the working stability can be ensured.
The method for using the adjusting device comprises the following specific steps:
(1) The elasticity of the spring 5 is regulated to ensure that the friction moment between the screwdriver 2 and the sleeve 1 is enough to drive the regulating bolt to rotate;
(2) After the crankshaft is manually rotated to the position of the upper dead center of the piston, a clearance gauge with a selected thickness is plugged into a valve clearance between a valve rocker head and a valve rod which are required to be adjusted;
(3) After the adjusting device is connected with an electric or pneumatic spanner, the adjusting device is locked by a locking nut 12, then a guide piece 7 is sleeved on a valve adjusting bolt head, and a screwdriver head 17 is automatically clamped in a groove on the adjusting bolt head under the action of the elasticity of a spring 5;
(4) The forward rotation switch of the electric or pneumatic wrench is pressed down, the electric or pneumatic wrench drives the sleeve 1 to rotate, and the sleeve 1 drives the screwdriver 2 to rotate through the cooperation of the taper hole 3 and the taper surface 4 so as to adjust the height of the valve adjusting bolt;
(5) The valve rocker swings under the action of a lever, after the valve rocker head is attached to the feeler gauge, the valve adjusting bolt is adjusted in place, the adjusting device is pressed down forcefully at the moment, the hexagonal hole 8 of the sleeve 1 is sleeved on the periphery of the fixed nut of the valve, and the taper hole 3 is separated from the taper surface 4 under the action of downward pressure;
(6) The handle 15 is held still, the forward switch of the electric or pneumatic wrench is continuously pressed, the sleeve 1 locks the fixed nut of the valve, the switch of the electric or pneumatic wrench is loosened, the sleeve 1 is withdrawn from the fixed nut of the valve and the feeler gauge is pulled out, and thus the adjustment of a valve clearance is completed.
When the friction torque between the screwdriver 2 and the sleeve 1 is insufficient to drive the valve adjusting bolt to rotate, the handle 15 can be utilized to rotate the adjusting bolt for adjustment.
While only the preferred embodiments of the present invention have been described above, it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (7)
1. The engine valve clearance adjusting device comprises a sleeve (1) and a screwdriver (2) inserted into the inner cavity of the sleeve (1), and is characterized in that: the inner cavity of the sleeve (1) is provided with a taper hole (3) capable of driving the screwdriver (2) to rotate by friction force, correspondingly, the screwdriver (2) is provided with a conical surface (4) matched with the taper hole (3), the screwdriver (2) on one side of the conical surface (4) is respectively sleeved with a spring (5) for pushing the screwdriver (2) to the taper hole (3) and an adjusting piece (6) which is connected with the sleeve (1) and can adjust the elasticity of the spring (5), two ends of the screwdriver (2) are respectively provided with a guide piece (7) and a handle (15), one end of the sleeve (1) corresponding to the adjusting piece (6) is sleeved with a connecting sleeve (9) matched with a wrench, and the inner cavity of the other end of the sleeve (1) is provided with a hexagonal hole (8);
the guide piece (7) is sleeved on the periphery of the screwdriver (2) close to one end of the hexagonal hole (8);
the screwdriver (2) passes through the connecting sleeve (9) to be connected with the handle (15).
2. An engine valve lash adjustment device according to claim 1, characterized in that: the inner cavity of the sleeve (1) between the hexagonal hole (8) and the taper hole (3) is provided with a transition hole (16), and correspondingly, the screwdriver (2) is provided with an excircle (18) in clearance fit with the transition hole (16).
3. An engine valve lash adjustment device according to claim 1, characterized in that: the inner cavity of the sleeve (1) at the outer side of the taper hole (3) is provided with a long hole (21), and the spring (5) and the adjusting piece (6) are both positioned in the long hole (21).
4. An engine valve lash adjustment device according to claim 3, characterized in that: the adjusting piece (6) is in threaded connection with the sleeve (1), and the adjusting piece (6) is respectively provided with a stepped hole (13) sleeved with the spring (5) and an adjusting groove (14) for adjusting the position of the adjusting piece (6).
5. An engine valve lash adjustment device according to claim 1, characterized in that: the connecting sleeve (9) is in threaded connection with the sleeve (1), and one end of the connecting sleeve (9) is respectively provided with a hexagonal connecting part (11) connected with a wrench and a locking nut (12) for locking the wrench.
6. An engine valve lash adjustment device according to claim 1, characterized in that: the connecting sleeve (9) covers the outlet of the long hole (21), and a through hole (22) which is in clearance fit with the screwdriver (2) is formed in the connecting sleeve (9).
7. An engine valve clearance adjustment apparatus according to any one of claims 1 to 6, characterized in that: the sleeve (1), the screwdriver (2), the guide piece (7), the spring (5), the adjusting piece (6), the connecting sleeve (9) and the handle (15) are coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291640.2A CN107859542B (en) | 2017-12-08 | 2017-12-08 | Engine valve clearance adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291640.2A CN107859542B (en) | 2017-12-08 | 2017-12-08 | Engine valve clearance adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107859542A CN107859542A (en) | 2018-03-30 |
| CN107859542B true CN107859542B (en) | 2023-06-06 |
Family
ID=61705180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711291640.2A Active CN107859542B (en) | 2017-12-08 | 2017-12-08 | Engine valve clearance adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107859542B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112454242A (en) * | 2020-11-17 | 2021-03-09 | 南京同尔电子科技有限公司 | VR adjusts structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3717053A (en) * | 1970-06-26 | 1973-02-20 | S P Q R Eng Ltd | Hand tool |
| SU870796A1 (en) * | 1980-01-09 | 1981-10-07 | Харьковский автомобильно-дорожный институт | Clearance regulator |
| JPS59194011A (en) * | 1983-04-18 | 1984-11-02 | Nippon Setsubi Kk | Tappet clearance adjuster |
| JPH11291132A (en) * | 1998-04-08 | 1999-10-26 | Sanwa Tekki Corp | Positioning mechanism of tightening tool |
| JP2003201811A (en) * | 2002-01-07 | 2003-07-18 | Mitsubishi Fuso Truck & Bus Corp | Valve clearance adjusting device of engine valve system |
| CN105922183A (en) * | 2016-06-14 | 2016-09-07 | 广西玉柴机器股份有限公司 | Valve clearance adjusting device |
| CN207598308U (en) * | 2017-12-08 | 2018-07-10 | 广西玉柴机器股份有限公司 | A kind of engine valve clearance adjusting apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4026719B2 (en) * | 2005-06-28 | 2007-12-26 | 本田技研工業株式会社 | Tappet clearance adjustment device |
-
2017
- 2017-12-08 CN CN201711291640.2A patent/CN107859542B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3717053A (en) * | 1970-06-26 | 1973-02-20 | S P Q R Eng Ltd | Hand tool |
| SU870796A1 (en) * | 1980-01-09 | 1981-10-07 | Харьковский автомобильно-дорожный институт | Clearance regulator |
| JPS59194011A (en) * | 1983-04-18 | 1984-11-02 | Nippon Setsubi Kk | Tappet clearance adjuster |
| JPH11291132A (en) * | 1998-04-08 | 1999-10-26 | Sanwa Tekki Corp | Positioning mechanism of tightening tool |
| JP2003201811A (en) * | 2002-01-07 | 2003-07-18 | Mitsubishi Fuso Truck & Bus Corp | Valve clearance adjusting device of engine valve system |
| CN105922183A (en) * | 2016-06-14 | 2016-09-07 | 广西玉柴机器股份有限公司 | Valve clearance adjusting device |
| CN207598308U (en) * | 2017-12-08 | 2018-07-10 | 广西玉柴机器股份有限公司 | A kind of engine valve clearance adjusting apparatus |
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| Publication number | Publication date |
|---|---|
| CN107859542A (en) | 2018-03-30 |
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