CN210010791U - Air valve grinding device - Google Patents
Air valve grinding device Download PDFInfo
- Publication number
- CN210010791U CN210010791U CN201920597088.8U CN201920597088U CN210010791U CN 210010791 U CN210010791 U CN 210010791U CN 201920597088 U CN201920597088 U CN 201920597088U CN 210010791 U CN210010791 U CN 210010791U
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- cam
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- valve rod
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- 230000001174 ascending effect Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 230000008602 contraction Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 8
- 239000004576 sand Substances 0.000 description 4
- 230000008439 repair process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Mechanically-Actuated Valves (AREA)
- Lift Valve (AREA)
Abstract
An air valve grinding device comprises a base, wherein a push rod seat is fixed above the base, a push rod is screwed on the push rod seat, a push block is fixed on the push rod, a cam seat is fixed in the middle of the base, a cam shaft is arranged on the cam seat in a rotating mode, a cam is fixed on one side of the cam shaft, a power sleeve is positioned above the cam, a cylinder cover is arranged on the push block in an inverted mode, a valve rod penetrates out of a valve seat of the cylinder cover, the bottom of the valve rod extends into a valve rod fixing sleeve and is locked by a locking nut I, a small shaft is connected with the bottom of a fixing sleeve, bearings are arranged on two sides of the small shaft and are limited by; before the work, the height of the ejector rod is adjusted to enable the cylinder cover to be horizontal, meanwhile, the cam is in contact with the valve rod fixing sleeve, the cam shaft drives the cam to rotate and is converted into the up-and-down motion of the valve rod, the power sleeve rotates intermittently to enable the small shaft to rotate, the valve rod rotates correspondingly, the rotation and the up-and-down motion are overlapped to form the grinding of the valve rod, the device is compact in structure, the grinding effect is good, and the sealing performance and the power conversion of the internal combustion engine.
Description
Technical Field
The invention relates to a grinding device, in particular to an air valve grinding device.
Background
In an internal combustion engine, the sealing function of a cylinder cover is very important, the sealing performance is poor, the power damage and the fuel oil waste are directly caused, and even certain safety accidents are caused, in the conventional inspection and repair process of the cylinder cover, the inspection and repair of an air valve combination are indispensable works, the repair is mainly completed by grinding, namely grinding sand is added at the contact part of a valve rod and a valve seat, a valve line is formed at the contact part through the relative movement of the valve rod and the valve seat and the rotation of the valve rod relative to the valve seat, the grinding method of a portable pneumatic grinding machine is relatively laggard, the grinding is more advanced by adopting the relative movement of a valve body and the valve seat (a comparison document with application number of 201510154322.6), the device lacks the link of the relative rotation of the valve rod, and the sealing performance of the air valve combination needs.
The invention provides a gas valve grinding device which solves the problems.
Disclosure of Invention
Aiming at the defects in the problems, the invention provides an air valve grinding device.
In order to achieve the above object, the present invention provides a gas valve grinding apparatus, comprising:
the ejector rod comprises a base, wherein a ejector rod seat is installed on the base through a bolt, the ejector rod seat is connected with an ejector rod through an internal thread connection method, and an ejector block is fixed above the ejector rod;
a cam seat is fixedly installed in the middle of the base, a cam shaft is installed inside the cam seat, a cam is fixedly connected to one side of the cam shaft, the cam is divided into an ascending section, a high-position jacking section and a descending section along the anticlockwise direction, and the curvature radius of the high-position jacking section is minimum and is kept unchanged;
the power sleeve is positioned above the cam, the inner circular wall of the power sleeve is uniformly provided with protrusions, a protrusion gap is formed between every two adjacent protrusions, the head of each protrusion is a sharp angle, the power sleeve is driven by power to rotate intermittently, and the rotating angle is constant and smaller than the circumferential angle corresponding to every two adjacent protrusions;
the cylinder cover is inverted above the top block, and a valve seat is machined at the top of the cylinder cover;
the valve rod is arranged in the valve seat, and a concave part is machined at the lower end of the valve rod and extends into the valve rod fixing sleeve;
the inner wall of the valve rod fixing sleeve is provided with a convex part, the convex part is matched with the concave part, a contraction groove is uniformly processed along the circumferential surface of the valve rod fixing sleeve, a small shaft is integrally connected with the bottom of the fixing sleeve, two ends of the small shaft are sleeved with bearings and limited by shaft clamps, and the size of the bearings is matched with the convex gap;
fixed cover external screw thread is still processed to the fixed cover top of valve rod, and lock nut I will the fixed cover of valve rod with the valve rod locking.
As a further improvement of the invention, the ejector rod seat is uniformly fixed at four corners of the base.
As a further improvement of the invention, the central position of the ejector rod seat is processed with an internal thread, the lower end of the ejector rod is processed with an external thread, and the external thread and the internal thread are fine threads.
As a further improvement of the invention, the ejector rod seat and the ejector rod are positioned by a locking nut.
As a further improvement of the invention, the upper part of the top block is compounded with a layer of elastic material.
As a further improvement of the invention, the upper section of the cam is an involute, the lower section of the cam is a straight line passing through the center of a circle, and the upper section and the lower section are transited with the high-position jacking section through a round angle.
As a further improvement of the invention, a compression spring is sleeved between the cylinder cover and the locking nut I.
As a further improvement of the invention, the expansion and contraction amount of the compression spring is smaller than the vertical height of the descending section.
The invention has the beneficial effects that:
1. the motion of the valve rod is formed by combining up-and-down motion and rotary motion, the grinding effect is good by matching the action of grinding sand, the sealing performance between the valve rod and the valve seat is good, the power conversion efficiency of the internal combustion engine is effectively improved, the fuel consumption is reduced, and the high-precision grinding cannot be achieved by the existing equipment.
2. The ejector rod seat is adjustable in height, so that the universality of the device is enhanced.
Drawings
FIG. 1 is a front view of an air valve grinder assembly of the present invention;
FIG. 2 is a top view of the cylinder head;
FIG. 3 is a top view of the base;
FIG. 4 is an enlarged view of position A of FIG. 1;
FIG. 5 is a detail view of the power sleeve;
FIG. 6 is an expanded view of the inner wall of the power sleeve;
FIG. 7 is a detail view of the valve stem retainer sleeve;
FIG. 8 is a detail view of the valve stem;
fig. 9 is a detail view of the cam.
In the figure: 1. a base; 2. a jack rod seat; 3. locking the nut; 4. a top rod; 5. a top block; 6. a cylinder head; 61. a valve seat; 7. a valve stem; 71. a valve line; 72. a recessed portion; 8. a cam seat; 9. a cam; 91. an ascending section; 92. a high jacking section; 93. a downlink section; 10. a camshaft; 11. a power sleeve; 111. a protrusion; 112. a raised head; 113. a bump gap; 12. a valve rod fixing sleeve; 121. fixing external threads of the sleeve; 122. the bottom of the fixed sleeve; 123. a small shaft; 124. a bearing; 125. shaft clamping; 126. a contraction groove; 127. a boss portion; 13. locking the nut I; 14. and pressing the spring.
Detailed Description
As shown in the drawings, an air valve grinding apparatus according to an embodiment of the present invention includes: as shown in fig. 1 and 3, a base 1 is provided with a top rod seat 2 through bolts, the top rod seat 2 is uniformly fixed at four corners of the base 1, the top rod seat 2 is connected with a top rod 4 through an internal thread connection method, an internal thread is processed at the central position of the top rod seat 2, an external thread is processed at the lower end of the top rod 4, the external thread and the internal thread are fine threads, the top rod seat 2 and the top rod 4 are positioned through a locking nut 3, a top block 5 is fixed above the top rod 4, and a layer of elastic material is compounded on the upper part of the top block 5; a cam seat 8 is fixedly installed in the middle of a base 1, a cam shaft 10 is installed inside the cam seat 8, one side of the cam shaft 10 is fixedly connected with a cam 9, as shown in fig. 9, the cam 9 is divided into an ascending section 91, a high-position jacking section 92 and a descending section 93 along the counterclockwise direction, the curvature radius of the high-position jacking section 92 is minimum and is kept unchanged, the ascending section 91 is an involute, the descending section 93 is a straight line passing through the center of a circle, and the ascending section 91 and the descending section 93 are in transition with the high-position jacking section 92 through a fillet; as shown in fig. 1, the power sleeve 11 is located above the cam 9, as shown in fig. 5 and 6, the protrusions 111 are uniformly arranged on the inner circular wall of the power sleeve 11, a protrusion gap 113 is formed between two adjacent protrusions 111, the head 112 of the protrusion is a sharp angle, the power sleeve 11 is driven by power to rotate intermittently, and the rotating angle is constant and smaller than the circumferential angle corresponding to two adjacent protrusions 111; as shown in fig. 1 and 2, the cylinder head 6 is inverted above the top block 5, and a valve seat 61 is machined at the top of the cylinder head 6; the valve rod 7 is installed in the valve seat 61, and as shown in fig. 4 and 8, a concave part 72 is processed at the lower end of the valve rod 7 and extends into the valve rod fixing sleeve 12; as shown in fig. 7, a convex portion 127 is formed on the inner wall of the valve stem fixing sleeve 12, the convex portion 127 is matched with the concave portion 72, a contraction groove 126 is uniformly formed along the circumferential surface of the valve stem fixing sleeve 12, a small shaft 123 is integrally connected with the fixing sleeve bottom portion 122, two ends of the small shaft 123 are sleeved with bearings 124 and limited by shaft clamps 125, and the size of the bearings 124 is matched with the convex gap 113; as shown in fig. 4 and 7, a fixing sleeve external thread 121 is further processed above the valve rod fixing sleeve 12, the valve rod fixing sleeve 12 and the valve rod 7 are locked by a lock nut I13, a compression spring 14 is further sleeved between the cylinder head 6 and the lock nut I13, and the expansion amount of the compression spring 14 is smaller than the vertical height of the descending section 93.
The motion of valve rod is formed by the combination of up-and-down motion and rotary motion, and the effect of cooperation abrasive sand, the effect of grinding is good, and sealing performance is good between the valve rod disk seat, has effectively improved the power conversion efficiency of internal-combustion engine, has reduced the consumption of fuel, and the grinding of high accuracy is that current equipment can't reach, and the highly adjustable of ejector pin seat for the commonality of device strengthens.
In particular use, the invention will be described with reference to the accompanying drawings for the convenience of understanding;
adjusting: the ejector rods are rotated to enable ejector blocks of the four ejector rods to be on the same horizontal plane, namely the cylinder cover is horizontal, meanwhile, the cams are in contact with the valve rod fixing sleeve, the adjustment is completed, and the ejector rods and the ejector rod base are locked through the locking nuts.
Grinding: for the convenience of understanding grinding, grinding is divided into two parts of up-and-down movement and rotation movement of the valve rod. The cam shaft drives the cam to rotate at a constant speed, the curvature radius is gradually reduced and the radius is increased in the ascending section, the cam jacks up the valve rod through the valve rod fixing sleeve, the compression spring stores energy, and at the moment, the bearing correspondingly moves to the position above the bulge of the power sleeve; in the high-position jacking section, the curvature radius is minimum and is not changed any more, at the moment, the valve rod and the bearing reach the highest position, the power sleeve is driven by power to perform intermittent rotation (the power is not marked in a power driving graph), and the rotation angle is smaller than the circumferential angle corresponding to the adjacent bulge gap; in the descending section, due to the rapid change of the working track of the cam, under the self-weight of the valve rod and the energy release of the compression spring, the valve rod completes one-time knocking relative to the valve seat, at the moment, due to the fact that the power sleeve rotates by an angle, the bearing moves along the sharp corner of the protruding head when moving downwards, the valve rod is enabled to rotate by a small angle when knocking downwards, the shrinkage of the compression spring effectively protects the cam in a limited mode, and meanwhile, under the action of grinding sand, the valve rod forms a valve line after certain times of relative motion in the valve seat to complete grinding.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A gas valve grinder assembly, comprising:
the device comprises a base (1), wherein a push rod seat (2) is installed on the base (1) through a bolt, the push rod seat (2) is connected with a push rod (4) through an internal thread connection method, and a top block (5) is fixed above the push rod (4);
a cam seat (8) is fixedly installed in the middle of the base (1), a cam shaft (10) is installed inside the cam seat (8), a cam (9) is fixedly connected to one side of the cam shaft (10), the cam (9) is divided into an ascending section (91), a high-position jacking section (92) and a descending section (93) along the anticlockwise direction, and the curvature radius of the high-position jacking section (92) is minimum and is kept unchanged;
the power sleeve (11), the power sleeve (11) is positioned above the cam (9), the inner circular wall of the power sleeve (11) is uniformly provided with protrusions (111), a protrusion gap (113) is formed between every two adjacent protrusions (111), the head (112) of each protrusion is a sharp angle, the power sleeve (11) is driven by power to rotate intermittently, and the rotating angle is constant and is smaller than the circumferential angle corresponding to every two adjacent protrusions (111);
the cylinder cover (6), the said cylinder cover (6) is turned upside down above the said top block (5), the top of the said cylinder cover (6) is processed with the valve base (61);
the valve rod (7) is installed in the valve seat (61), and a concave part (72) is machined at the lower end of the valve rod (7) and extends into the valve rod fixing sleeve (12);
the inner wall of the valve rod fixing sleeve (12) is provided with a convex part (127), the convex part (127) is matched with the concave part (72), a contraction groove (126) is uniformly processed along the circumferential surface of the valve rod fixing sleeve (12), a small shaft (123) is integrally connected with the bottom (122) of the fixing sleeve, two ends of the small shaft (123) are sleeved with bearings (124) and limited by shaft clamps (125), and the size of the bearings (124) is matched with the convex gap (113);
fixed cover external screw thread (121) are still processed to valve rod fixed cover (12) top, and lock nut I (13) will valve rod fixed cover (12) with valve rod (7) locking.
2. A gas valve grinder assembly as set forth in claim 1 wherein: the ejector rod seats (2) are uniformly fixed at four corners of the base (1).
3. A gas valve grinder assembly as set forth in claim 2 wherein: the central position of ejector rod seat (2) processes the internal thread, and the lower extreme processing external screw thread of ejector rod (4), external screw thread and internal thread are fine screw.
4. A gas valve grinder assembly as set forth in claim 3 wherein: the ejector rod seat (2) and the ejector rod (4) are positioned through a locking nut (3).
5. A gas valve grinder assembly as set forth in claim 1 wherein: the upper part of the top block (5) is compounded with a layer of elastic material.
6. A gas valve grinder assembly as set forth in claim 1 wherein: the ascending section (91) of the cam (9) is an involute, the descending section (93) is a straight line passing through the circle center, and the ascending section (91) and the descending section (93) are transited through a fillet and a high-position jacking section (92).
7. A gas valve grinder assembly as set forth in claim 1 wherein: and a compression spring (14) is sleeved between the cylinder cover (6) and the locking nut I (13).
8. A gas valve grinder assembly as set forth in claim 7 wherein: the expansion amount of the compression spring (14) is smaller than the vertical height of the descending section (93).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201920597088.8U CN210010791U (en) | 2019-04-28 | 2019-04-28 | Air valve grinding device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201920597088.8U CN210010791U (en) | 2019-04-28 | 2019-04-28 | Air valve grinding device |
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CN210010791U true CN210010791U (en) | 2020-02-04 |
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CN201920597088.8U Active CN210010791U (en) | 2019-04-28 | 2019-04-28 | Air valve grinding device |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109968142A (en) * | 2019-04-28 | 2019-07-05 | 浙江海洋大学 | A kind of air valve grinding device |
CN112355881A (en) * | 2020-09-29 | 2021-02-12 | 浙江旋东阀门有限公司 | Grinding device of valve body grinding machine |
-
2019
- 2019-04-28 CN CN201920597088.8U patent/CN210010791U/en active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109968142A (en) * | 2019-04-28 | 2019-07-05 | 浙江海洋大学 | A kind of air valve grinding device |
CN109968142B (en) * | 2019-04-28 | 2024-08-16 | 浙江海洋大学 | Air valve grinding device |
CN112355881A (en) * | 2020-09-29 | 2021-02-12 | 浙江旋东阀门有限公司 | Grinding device of valve body grinding machine |
CN112355881B (en) * | 2020-09-29 | 2022-04-08 | 浙江旋东阀门有限公司 | Grinding device of valve body grinding machine |
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