CN107471153B - Valve clearance adjusting device - Google Patents
Valve clearance adjusting device Download PDFInfo
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- CN107471153B CN107471153B CN201710935171.7A CN201710935171A CN107471153B CN 107471153 B CN107471153 B CN 107471153B CN 201710935171 A CN201710935171 A CN 201710935171A CN 107471153 B CN107471153 B CN 107471153B
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- hole
- sleeve
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- conical body
- spring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
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- Mechanical Engineering (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention discloses a valve clearance adjusting device, comprising: the sleeve is provided with an inner hexagonal hole at the head part, a long hole is arranged in the tail end of the sleeve, a taper hole is arranged in the middle position in the sleeve, and the front end of the taper hole is connected with a guide hole; the conical body is sleeved in the sleeve, the middle section of the conical body is a round rod, the round rod is matched with the guide hole, the tail end of the round rod is provided with the conical body, the conical surface of the conical body is matched with the conical hole, the head of the round rod is gradually reduced to form a linear convex block, and the linear convex block can protrude out of the end surface of the hexagonal socket hole; the spring is accommodated in the long hole, the tail end of the long hole is provided with a spring seat ring, and the spring is used for driving the conical body forwards so as to enable the conical body to be attached to the conical hole tightly; and the end cover is arranged at the tail end of the sleeve, the outer side of the top wall of the end cover protrudes outwards to form a connecting rod, and the connecting rod is used for being connected with a locking clamp of the electric wrench. The device improves the work efficiency of adjusting the valve clearance.
Description
Technical Field
The invention relates to the field of valve assembly, in particular to a valve clearance adjusting device.
Background
In the assembly process of the diesel engine, the process requirement of the valve clearance is generally (0.35-0.45) ± 0.05mm, and the valve clearance is detected and adjusted by a process control method in the assembly process of the engine, so that the valve clearance is controlled within a certain tolerance range. The valve clearance of the engine is mainly manually adjusted by adopting tools such as a conical body, a double offset ring spanner and the like. Specifically, after the crankshaft is manually rotated to the top dead center position of the piston, firstly, a fixed nut of a valve adjusting screw is loosened by a tightening tool such as a box spanner, the adjusting screw is reversely loosened by a conical body, a selected thickness gauge is plugged into a valve clearance between a rocker arm head and a valve rod to be adjusted, the adjusting screw is rotated by the aid of the tool such as the conical body on one hand, a thickness gauge is pulled by the other hand until the thickness gauge slightly bears resistance, the adjusting screw is fixed by the conical body and kept still, the fixed nut is tightened by the aid of the tightening tool such as the box spanner, the relative position of the adjusting bolt and the rocker arm is locked, the gauge is taken away, and the crankshaft is rotated to continue to adjust the next valve clearance. Because the arrangement sequence of the engine valves is different, the valve clearance is adjusted cylinder by cylinder according to the ignition (oil injection) sequence of the engine until the valve clearance adjustment of the whole engine is completely finished.
However, in the existing engine assembly, the valve clearance adjustment method mainly adopts manual adjustment of tools such as a conical body and a ring spanner, and three different tools, namely a feeler gauge for measuring clearance, a conical body for rotating an adjusting bolt and a spanner for locking an adjusting nut, are needed to be simultaneously used by people for matching, so that the operation is complex, the operation time is long, the efficiency is low, and the method is one of the main processes for influencing the production rhythm in the engine assembly process.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a valve clearance adjusting device, which improves the working efficiency of adjusting the valve clearance.
To achieve the above object, the present invention provides a valve clearance adjusting apparatus comprising: the sleeve is provided with a hexagon socket at the head part, a long hole is arranged in the tail end of the sleeve, a taper hole is arranged in the middle of the sleeve, and the front end of the taper hole is connected with a guide hole; the conical body is sleeved in the sleeve, the middle section of the conical body is a round rod, the round rod is matched with the guide hole, the tail end of the round rod is provided with the conical body, the conical surface of the conical body is matched with the conical hole, the head of the round rod is gradually reduced to form a linear convex block, and the linear convex block can protrude out of the end surface of the hexagonal socket hole; the spring is accommodated in the long hole, the tail end of the long hole is provided with a spring seat ring, and the spring is used for driving the conical body forwards so as to enable the conical body to be attached to the conical hole tightly; and the end cover is arranged at the tail end of the sleeve, the outer side of the top wall of the end cover protrudes outwards to form a connecting rod, and the connecting rod is used for being connected with a locking clamp of the electric wrench.
Preferably, the tail end of the conical body extends to form a cylindrical section, and the cylindrical section is in clearance fit with the long hole.
Preferably, the spring retainer is a cap, and the outer wall of the cap is in threaded fit with the inner wall at the tail end of the long hole.
Preferably, a spring washer is provided in the cap.
Preferably, the side wall of the tail end of the long hole is provided with a locking bolt.
Preferably, the inner side wall of the end cap is threadedly engaged with the outer wall of the trailing end of the sleeve.
Preferably, the hexagon socket hole and the guide hole are provided with transition holes.
Compared with the prior art, the invention has the following beneficial effects: through rotating adjusting bolt with the starter, two operation actions of box spanner locking adjusting nut are integrated and are accomplished by a sleeve mechanism, reduce the operation action, through establishing certain spring force in advance, make the conical surface friction torque of sleeve and bottle opener be less than valve spring's compressive force, bottle opener rotation adjusting bolt makes the other end of valve bridge press after pasting the clearance gauge when rotating the sleeve, the frictional force with the bottle opener conical surface is eliminated to telescopic conical surface, sleeve idle running does not drive the bottle opener and continues to rotate and compress spiracular spring, adopt electronic (or pneumatic) spanner rotation, drive sleeve adjustment valve clearance, the work efficiency of adjustment valve clearance has been improved.
Drawings
FIG. 1 is a schematic view of a valve lash adjustment device according to the present invention;
FIG. 2 is a schematic view of a sleeve in the valve lash adjustment device according to the present invention;
FIG. 3 is a right side view of a sleeve in the valve lash adjustment device according to the present invention;
fig. 4 is a schematic view of the structure of a taper body in the valve lash adjustment device according to the present invention;
FIG. 5 is a right side view of a cone in the valve lash adjustment device according to the present invention;
FIG. 6 is a schematic view of an end cap in a lash adjuster according to the present invention;
FIG. 7 is a right side view of an end cap in the lash adjuster according to the present invention;
FIG. 8 is a schematic view of a spring retainer in a valve lash adjustment device according to the present invention;
fig. 9 is a right side view of a spring retainer in the valve lash adjustment device according to the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1 to 9, a valve clearance adjusting device according to an embodiment of the present invention includes a sleeve 1, a conical body 2, a spring 3, a spring retainer 4, and an end cap 5, wherein the conical body 2, the spring 3, and the spring retainer 4 are sequentially inserted into the sleeve 1, a long hole 12 is formed in a tail end of the sleeve 1, a conical hole 11 is formed in a middle position in the sleeve 1, a guide hole 10 is connected to a front end of the conical hole 11, the conical body 2 is sleeved in the sleeve 1, a middle section of the conical body 2 is a round rod 22, the round rod 22 is matched with the guide hole 10, a cone 24 is formed at a tail end of the round rod 22, a conical surface of the cone 24 is matched with the conical hole 11, a head of the round rod 22 is tapered to form a protrusion 21, and the linear protrusion 21 can protrude out of an end surface of the inner hexagonal hole 8. The spring 3 is accommodated in the long hole 12, the spring retainer 4 is arranged at the tail end of the long hole 12, and the spring 3 is used for driving the conical body 2 forwards so as to attach the conical body 2 to the conical hole 11. The end cover 5 is arranged at the tail end of the sleeve 1, a connecting rod 19 protrudes outwards from the outer side of the top wall of the end cover 5, and the connecting rod 19 is used for being connected with a lock clamp of the electric wrench.
In the above scheme, interior hexagonal hole 8 is used for being connected with the cooperation of carminative fixation nut, the excircle cooperation of guiding hole 10 and conical rod 22 of conical body 2, restriction conical body 2's radial deviation, the conical surface cooperation of taper hole 11 and cone 24, conical body 2 can nimble along the axis direction removal in sleeve 1, be equipped with spring 3 in the slot hole 12, spring 3's one end links to each other with cone 24, the other end links to each other with spring housing washer 4, spring housing washer 4 links to each other with the laminating of end cover 5, be equipped with connecting rod 19 on the end cover 5, connecting rod 19 is used for being connected with electronic (pneumatic) spanner.
When the adjusting device of the valve clearance is used specifically, after a crankshaft is rotated manually to the top dead center position of a piston, a feeler gauge with a selected thickness is plugged into the valve clearance between a rocker arm head and a valve rod to be adjusted, an electric wrench and a sleeve 1 are taken up, the axis of a conical body 2 and a valve adjusting bolt to be adjusted are on the same axis, a linear lug 21 of the conical body 2 is inserted into a linear slot of the valve adjusting bolt, the electric wrench is pressed downwards by force, an inner hexagonal hole 8 of the sleeve 1 is sleeved into a fixing nut of a valve, the conical body 2 offsets the axial force of a spring 3 under the support of the adjusting bolt, a conical surface is separated from the conical surface, a reversing switch of the electric wrench is pressed, the electric wrench rotates, the sleeve 1 is driven to rotate through a connecting rod 19, the sleeve 1 reversely loosens the fixing nut, and then the electric wrench is lifted upwards, the inner hexagonal hole 8 of the sleeve 1 is separated from the fixing nut, the linear convex block 21 of the conical body 2 is kept in the linear slot of the adjusting bolt, a forward switch of the electric wrench is pressed, the electric wrench rotates forward, the sleeve 1 is driven to rotate forward through the connecting rod 19, the conical surface in the sleeve 1 and the conical surface of the cone 24 drive the conical body 2 to rotate through friction force, the conical body 2 drives the adjusting bolt to rotate forward, the lower end of the adjusting bolt is attached to the upper end of the valve ejector rod, the forward rotation of the adjusting bolt changes the relative position with the valve bridge screw hole, the adjusting bolt side of the valve bridge is lifted, under the action of a lever, the other end of the valve bridge is pressed down until the plug gauge between the rocker arm head and the valve rod is attached tightly, the clearance between the valve arm head and the valve rod is eliminated, the electric wrench is continuously pressed downwards to drive the sleeve 1 to move downwards, the inner hexagonal hole 8 of the sleeve 1 is sleeved with the fixing nut, the sleeve 1 drives the fixing nut to rotate, the relative position of the adjusting bolt and the valve bridge is locked, the switch of the electric wrench is loosened, the sleeve 1 withdraws from the fixing nut to complete the automatic adjustment of one valve clearance, the crankshaft is rotated again to continue the adjustment of the next valve clearance, and the valve clearances are adjusted cylinder by cylinder according to the ignition (oil injection) sequence of the engine due to different arrangement sequences of the engine valves until the valve clearance adjustment of the whole engine is completely completed. In this scheme, through establishing certain spring force in advance for sleeve 1 and conical surface friction torque of conical body 2 are less than valve spring's compressive force, and when rotating sleeve 1, behind conical body 2 rotation regulation bolt made the other end of valve bridge to press the clearance gauge, sleeve 1's conical surface eliminated with conical body 2 conical surface's frictional force, and sleeve 1 idle running does not drive the conical body and continues to rotate.
In a preferred embodiment, a cylindrical section 25 extends from the rear end of the conical body 2, and the cylindrical section 25 is in clearance fit with the elongated hole 12.
In a preferred embodiment, the spring retainer 4 is a cap, the outer wall of which is threaded onto the inner wall of the rear end of the elongated hole 12. In this scheme, the outer wall of block has the external screw thread, and the inner wall at slot hole 12 tail end has screw 14, and the external screw thread and the 14 threaded connection of screw of block.
As a preferred embodiment, a spring washer 7 is provided in the cap.
In a preferred embodiment, the side wall of the rear end of the elongated hole 12 is provided with a locking bolt 6, and correspondingly, the side wall of the rear end of the elongated hole 12 is provided with a locking screw hole 15.
As a preferred embodiment, the inner side wall of the end cap 5 is screw-fitted with the outer wall of the trailing end of the sleeve 1. In this scheme, the inside wall of end cover 5 is equipped with internal thread 17, and internal thread 17 is connected with the excircle screw thread 16 cooperation of sleeve 1, and the lateral wall of end cover 5 is equipped with step 18.
In a preferred embodiment, a transition hole 9 is provided between the hexagon socket 8 and the pilot hole 10. In addition, a bayonet 13 is arranged in the middle of the outer wall of the sleeve 1, the linear projection 21 is in transition connection with the head of the round rod 22 through a conical surface 21, a step 23 is arranged between the tail end of the round rod 22 and the cone 24, and a spring seat hole 26 is arranged on the end surface of the cone 24.
In summary, the valve clearance adjusting device of the present embodiment integrates two operation actions of rotating the adjusting bolt by the driver and locking the adjusting nut by the ring spanner by one sleeve mechanism, so as to reduce the operation actions, and the friction torque between the sleeve and the conical surface of the driver is smaller than the compression force of the valve spring by setting a certain spring force in advance, when the sleeve is rotated, the driver rotates the adjusting bolt to press the other end of the valve bridge against the clearance gauge, the friction force between the conical surface of the sleeve and the conical surface of the driver is eliminated, and the sleeve idles without driving the driver to continue to rotate to compress the spring of the valve. The electric (or pneumatic) wrench is adopted to rotate to drive the sleeve to adjust the valve clearance, so that the working efficiency of adjusting the valve clearance is improved.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (7)
1. A valve lash adjustment device characterized by comprising:
the sleeve is provided with an inner hexagonal hole at the head part, a long hole is formed in the tail end of the sleeve, a taper hole is formed in the middle position in the sleeve, and the front end of the taper hole is connected with a guide hole;
the conical body is sleeved in the sleeve, the middle section of the conical body is a round rod, the round rod is matched with the guide hole, the tail end of the round rod is provided with a cone, the conical surface of the cone is matched with the conical hole, the head of the round rod is gradually reduced to form a linear convex block, and the linear convex block can protrude out of the end surface of the inner hexagonal hole;
the spring is accommodated in the long hole, the tail end of the long hole is provided with a spring retainer, and the spring is used for driving the conical body forwards so as to enable the conical body to be attached to the conical hole tightly; a spring seat hole is formed in the end face of the cone; and
the end cover is arranged at the tail end of the sleeve, a connecting rod protrudes outwards from the outer side of the top wall of the end cover, and the connecting rod is used for being connected with a lock clamp of the electric wrench.
2. The valve lash adjustment device of claim 1, wherein a cylindrical section extends from the trailing end of the conical body, the cylindrical section being in clearance fit with the slot.
3. The valve lash adjustment device of claim 1, wherein the spring retainer is a cap, an outer wall of which is threadedly engaged with an inner wall of a trailing end of the elongated hole.
4. A valve lash adjustment device according to claim 3, characterized in that a spring washer is provided in the cap.
5. A valve play adjustment device according to claim 4, characterized in that the side wall of the trailing end of the elongated hole is provided with a locking bolt.
6. A valve lash adjustment device according to claim 1, wherein the inner side wall of the end cap is screw threadedly engaged with the outer wall of the trailing end of the sleeve.
7. The valve lash adjustment device of claim 1, wherein the socket bore and the pilot bore have a transition bore therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710935171.7A CN107471153B (en) | 2017-10-10 | 2017-10-10 | Valve clearance adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710935171.7A CN107471153B (en) | 2017-10-10 | 2017-10-10 | Valve clearance adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107471153A CN107471153A (en) | 2017-12-15 |
| CN107471153B true CN107471153B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710935171.7A Active CN107471153B (en) | 2017-10-10 | 2017-10-10 | Valve clearance adjusting device |
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| CN (1) | CN107471153B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108247085A (en) * | 2018-03-19 | 2018-07-06 | 刘广俭 | A kind of hydraulic-driven without lathe bed wheel tread turning machining device |
| CN112605931A (en) * | 2020-11-13 | 2021-04-06 | 中国航发沈阳黎明航空发动机有限责任公司 | Combined adjusting tool |
| CN113894719B (en) * | 2021-09-29 | 2023-02-07 | 广西玉柴机器股份有限公司 | Clamping device for adjusting clearance of braking exhaust valve in engine cylinder |
| CN114952684A (en) * | 2022-05-11 | 2022-08-30 | 东风柳州汽车有限公司 | Sleeve for flat joint nut |
| CN114833755A (en) * | 2022-06-02 | 2022-08-02 | 重庆磐谷动力技术有限公司 | Novel engine valve clearance adjusting tool and method |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87200110U (en) * | 1987-01-05 | 1987-10-21 | 马才英 | Valve gap adjuster for internal combustion engine |
| DE19601853C1 (en) * | 1996-01-19 | 1997-04-30 | Werner Weitner | Method for inserting and removing valve spring retainers |
| JP2002115512A (en) * | 2000-10-03 | 2002-04-19 | Yutani:Kk | Valve clearance setting device |
| CN2788971Y (en) * | 2005-04-08 | 2006-06-21 | 东风朝阳柴油机有限责任公司 | Special tool for regulating air door |
| CN102152277B (en) * | 2011-01-28 | 2012-09-05 | 东风朝阳柴油机有限责任公司 | Special device for adjusting valve clearance of engine |
| CN202123476U (en) * | 2011-06-20 | 2012-01-25 | 镇江中船设备有限公司 | Air valve-clearance adjusting device |
| CN202428390U (en) * | 2011-12-29 | 2012-09-12 | 锐展(铜陵)科技有限公司 | Multi-machine-type engine valve key tool |
| CN202780951U (en) * | 2012-08-09 | 2013-03-13 | 中国重汽集团杭州发动机有限公司 | Valve clearance adjustment wrench |
| CN203293117U (en) * | 2013-06-27 | 2013-11-20 | 宁波市鄞州德来特技术有限公司 | Tool sleeve |
| CN105922183B (en) * | 2016-06-14 | 2018-01-12 | 广西玉柴机器股份有限公司 | The adjusting apparatus of valve clearance |
| CN207223885U (en) * | 2017-10-10 | 2018-04-13 | 广西玉柴机器股份有限公司 | Valve lash adjustment device |
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2017
- 2017-10-10 CN CN201710935171.7A patent/CN107471153B/en active Active
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| CN107471153A (en) | 2017-12-15 |
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