CN115106752A - Deep hole gasket pressing-in device and using method - Google Patents
Deep hole gasket pressing-in device and using method Download PDFInfo
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- CN115106752A CN115106752A CN202210852853.2A CN202210852853A CN115106752A CN 115106752 A CN115106752 A CN 115106752A CN 202210852853 A CN202210852853 A CN 202210852853A CN 115106752 A CN115106752 A CN 115106752A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000007704 transition Effects 0.000 claims description 22
- 238000003825 pressing Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 230000008014 freezing Effects 0.000 claims description 4
- 238000007710 freezing Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a deep-hole gasket pressing-in device and a using method, relates to the technical field of diesel engines, solves the problem of low installation precision of the existing deep-hole gasket, improves the installation precision of the deep-hole gasket, avoids the damage of the deep-hole gasket, and has the following specific scheme: including being used for impressing the deep hole gasket the downthehole drive shaft of cylinder cap, the fixed first location boss that is used for installing the deep hole gasket that is equipped with of one end of drive shaft, the other end and the ejector pin contact of drive shaft, realize coaxial setting through the flange between drive shaft and the ejector pin, the tip and the ejector pin of drive shaft and ejector pin contact all are located the flange, the jacking bolt has been cup jointed on the ejector pin, in jacking bolt one end inserts the flange, the jacking bolt can drive the axial displacement of ejector pin along the flange.
Description
Technical Field
The invention relates to the technical field of diesel engines, in particular to a deep hole gasket pressing-in device and a using method thereof.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In the field of manufacturing of marine low-speed diesel engines, a deep hole gasket is additionally arranged between a cylinder cover and an installation assembly during design for prolonging the service life of parts. The deep hole gasket is positioned in a cylinder cover hole, the aperture is smaller than 27-30mm, the depth is 250-300mm, the gasket and the deep hole are in interference fit, and the interference magnitude is 0.05-0.08 mm.
The inventor finds that the gasket is inclined in the knocking-in process due to the fact that the gasket is placed in a non-centered position or not perpendicular to a hole after entering the deep hole in a mode that the long copper rod is knocked by a hand hammer to hammer the deep hole gasket into the cylinder cover hole; and the knocking-in force is not easy to control, whether the front end of the gasket is in contact with a cylinder cover hole or not cannot be determined, the force is small and cannot be sealed, the force is too large, and the joint surface of the cylinder cover and the gasket is easy to damage, so that the phenomena of leakage of a cylinder cover pressure release valve, a power indicating valve and a safety valve gasket occur in the operation process of the diesel engine.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a deep-hole gasket pressing-in device and a using method thereof.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the deep-hole gasket pressing-in device comprises a driving shaft used for pressing the deep-hole gasket into a cylinder cover hole, wherein a first positioning boss used for installing the deep-hole gasket is fixedly arranged at one end of the driving shaft, the other end of the driving shaft is in contact with an ejector rod, the driving shaft and the ejector rod are coaxially arranged through a flange, the end part of the driving shaft in contact with the ejector rod and the ejector rod are both located in the flange, a jacking bolt is sleeved on the ejector rod, one end of the jacking bolt is inserted into the flange, and the jacking bolt can drive the ejector rod to move along the axial direction of the flange.
As a further implementation, the driving shaft is coaxially disposed with a first positioning boss, and a diameter of the first positioning boss is smaller than a diameter of the driving shaft.
As a further implementation manner, a conical transition is formed between the driving shaft and the first positioning boss, and a transition gasket for supporting the deep hole gasket is sleeved on the conical transition.
As a further implementation, the transition pad is made of a compliant material.
As a further implementation manner, the flange is a hollow structure, the inner diameter of the flange is the same as the outer diameter of the driving shaft, and the driving shaft can slide in the flange along the axial direction of the driving shaft.
As a further implementation manner, the jacking bolt is composed of a pushing part and a screwing part which are coaxially arranged, the pushing part is fixedly arranged at one end of the screwing part, the pushing part and the screwing part are both hollow cylindrical structures, the outer diameter of the pushing part is larger than that of the screwing part, the inner diameter of the pushing part is the same as that of the screwing part, and the rod body of the ejector rod is inserted into the pushing part and the screwing part.
As a further implementation manner, the jacking bolt and the flange are coaxially arranged, the jacking portion is located in the flange, and the outer wall of the jacking portion is in threaded fit with the inner wall of the flange.
As a further implementation manner, one end of the rod body is fixedly provided with a limiting part used for being pushed by the pushing part, and the limiting part and the rod body are coaxially arranged.
As a further implementation manner, a hemispherical second positioning boss is fixedly arranged at the end part of one end, in contact with the driving shaft, of the ejector rod, the second positioning boss is coaxially arranged with the ejector rod, a hemispherical groove is arranged at the center of the end part, in contact with the ejector rod, of the driving shaft, and the second positioning boss is placed in the groove.
In a second aspect, the invention provides a use method of a deep hole gasket pressing device, which specifically comprises the following steps:
putting the deep hole gasket into liquid nitrogen for freezing;
fixedly arranging the flange on the cylinder cover by using a positioning bolt;
sequentially sleeving a transition gasket and a frozen deep hole gasket on a first positioning boss, and putting the end part of a driving shaft, which is provided with the transition gasket and the deep hole gasket, into a deep hole of a cylinder cover through a flange;
inserting the ejector rod into the jacking bolt, integrally placing the assembled jacking bolt and the ejector rod into the flange, and manually rotating the jacking bolt until the jacking bolt cannot be rotated continuously by bare hands;
the jacking bolt is tightened using a torque wrench.
The beneficial effects of the invention are as follows:
(1) the first positioning boss is used for mounting the deep-hole gasket, so that the deep-hole gasket is placed in the middle and is perpendicular to a cylinder cover hole, the phenomenon that the deep-hole gasket is inclined in the placing process is avoided, meanwhile, the jacking bolt pushes the driving shaft to move through the ejector rod, the deep-hole gasket is driven to move, the pressing force of the deep-hole gasket is convenient to control, and the damage of the deep-hole gasket is avoided.
(2) The transition gasket is made of flexible materials, plays a role in protection, and can prevent the deep hole gasket from being damaged by a driving shaft in the installation process.
(3) According to the invention, the jacking bolt is in threaded fit with the flange, the driving shaft is pushed to move in a screwing mode, the controllability of force application is ensured in the threaded fit mode, the inclination of the deep-hole gasket caused by uneven force application is avoided, and the damage of the deep-hole gasket caused by overlarge force application is avoided.
(4) The end part of the ejector rod is provided with the hemispherical second positioning boss, the end part of the driving shaft is provided with the hemispherical groove matched with the second positioning boss, and through the matching between the second positioning boss and the groove, the positioning and automatic correction between the driving shaft and the ejector rod can be realized, so that the problem that the deep hole gasket is damaged due to uneven stress caused by the deviation between the driving shaft and the ejector rod in the pushing process is solved.
(5) According to the invention, the second positioning boss is matched with the hemispherical groove, so that the second positioning boss cannot drive the driving shaft to rotate when rotating around the axis of the second positioning boss, only jacking force is provided, the rotating torque in the pressing-in process is greatly reduced, the damage to the structural surface of the deep-hole gasket is avoided, and the roughness of the surface of the deep-hole gasket is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic diagram of an overall cross-sectional structure of a deep-hole pad pressing apparatus according to one or more embodiments of the present invention;
FIG. 2 is a schematic diagram of a deep hole pad pressing device according to one or more embodiments of the present invention in an in-use state;
in the figure: the mutual spacing or size is exaggerated to show the position of each part, and the schematic diagram is only used for illustration;
wherein, 1, a transition gasket; 2. a drive shaft; 3. a flange; 4. jacking bolts; 5. positioning the bolt; 6. a top rod; 7. a first positioning boss; 8. a second positioning boss; 9. deep hole gaskets; 10. a pushing part; 11. a screwing part; 12. a shaft body; 13. a limiting part; 14. and (4) air inlet holes.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
As introduced in the background art, the deep-hole gasket is hammered into a cylinder cover hole by hammering a long copper rod by a hand hammer, and after the gasket enters the deep hole, the gasket is not placed in the center or is not perpendicular to the hole, so that the gasket is inclined in the hammering process; the invention provides a deep-hole gasket pressing-in device and a using method thereof, aiming at solving the technical problems that the phenomenon that a cylinder cover pressure release valve, a power indicating valve and a safety valve gasket leak in the operation process of a diesel engine is caused because the force of knocking in is not easy to control, whether the front end of the gasket is in contact with a cylinder cover hole or not cannot be determined, the force is small, the gasket cannot be sealed, and the force is too large, so that the joint surface of the cylinder cover and the gasket is easy to damage.
Example 1
In a typical embodiment of the present invention, as shown in fig. 1-2, a deep hole gasket pressing device is provided, which includes a driving shaft 2, a flange 3, a jacking bolt 4 and a jacking rod 6, wherein one end of the driving shaft 2 is fixedly provided with a first positioning boss 7, the other end is inserted into the flange 3, the jacking rod 6 is also inserted into the flange 3, one end of the jacking rod 6 is movably connected with the driving shaft 2 through a second positioning boss 8, and the jacking bolt 4 is sleeved on the jacking rod 6.
Specifically, the length of drive shaft 2 is greater than the degree of depth in cylinder cap hole, drive shaft 2 is equipped with a first location boss 7 with the one end of the deep contact of cylinder cap hole, first location boss 7 is cylindrical structure, first location boss 7 sets up with drive shaft 2 is coaxial, and the diameter of first location boss 7 is less than drive shaft 2, the diameter of first location boss 7 is the same with the 14 diameters of the inlet port of the deep department of cylinder cap hole, mainly used is to the location of drive shaft 2, in order to guarantee the axiality between drive shaft 2 and the cylinder cap hole.
For the toper transition between first location boss 7 and the drive shaft 2, its tapering is the same with the slope of cylinder cap hole depth department to make deep hole gasket 9 can with the cylinder cap hole depth department in close contact with, guarantee the axiality in deep hole gasket 9 and cylinder cap hole simultaneously.
The transition gasket 1 is sleeved on the taper transition between the first positioning boss 7 and the driving shaft 2, the thickness of the transition gasket 1 is smaller than that of the deep hole gasket 9, and the transition gasket 1 is made of a flexible material so as to prevent the driving shaft 2 from damaging the deep hole gasket 9 in the installation process.
It can be understood that the transition gasket 1 may be made of a flexible material such as a copper material, an aluminum material, or a copper-aluminum composite material, and the specific material may be selected according to actual design requirements, which is not limited herein.
For convenience of explanation, in the present embodiment, the position where the first positioning boss is fixedly provided is the front end of the driving shaft 2, and the other end is the rear end of the driving shaft 2.
The rear end of the driving shaft 2 is sleeved with a flange 3, the flange 3 is of a hollow structure, the cross section of the flange 3 can be regarded as a circular ring structure, the diameter of the hollow part of the flange 3 is the same as the outer diameter of the driving shaft 2, the flange 3 and the driving shaft 2 are coaxially arranged, and the driving shaft 2 can slide in the flange 3 along the axial direction of the driving shaft.
In jacking bolt 4 one end inserted flange 3, screw-thread fit between jacking bolt 4 and the flange 3, and coaxial setting between jacking bolt 4 and the flange 3, jacking bolt 4 can be for flange 3's axial reciprocating motion.
The jacking bolt 4 is a hollow T-shaped columnar structure and comprises a jacking portion 10 and a screwing portion 11, the jacking portion 10 is fixedly arranged at one end of the screwing portion 11, the jacking portion 10 and the screwing portion 11 are both hollow columnar structures, the outer diameter of the jacking portion 10 is larger than that of the screwing portion 11, the inner diameter of the jacking portion 10 is the same as that of the screwing portion 11, and the jacking portion 10 and the screwing portion 11 are coaxially arranged.
The outer diameter of the pushing part 10 is the same as the inner diameter of the flange 3, and the outer wall of the pushing part 10 is provided with external threads which can be in threaded fit with the flange 3.
The ejector rod 6 is also of a T-shaped column structure, the ejector rod 6 is composed of a rod body 12 and a limiting part 13, the limiting part 13 is fixedly arranged at one end of the rod body 12, the rod body 12 and the limiting part 13 are both of a cylindrical structure, the rod body 12 and the limiting part 13 are coaxially arranged, the diameter of the rod body 12 is smaller than that of the limiting part 13, and the diameter of the rod body 12 is the same as the inner diameters of the pushing part 10 and the screwing part 11.
The pole body 12 inserts in jacking bolt 4, and spacing portion 13 is located jacking bolt 4's outside for ejector pin 6 and the coaxial setting of jacking bolt 4, when jacking bolt 4 removed, accessible top pushing portion 10 promoted spacing portion 13 and removed, and then promoted whole ejector pin 6 and removed, thereby accessible ejector pin 6 promotes drive shaft 2 and removes.
The one end that ejector pin 6 stretches out jacking bolt 4 is fixed to be equipped with second location boss 8, and is concrete, and second location boss 8 is fixed to be set up at the tip of spacing portion 13, and second location boss 8 sets up with spacing portion 13 is coaxial, the top of mainly used to drive shaft 2 pushes away.
Because second location boss 8 is hemisphere protruding structure, the recess of 2 tip of drive shaft is hemisphere structure equally, and second location boss 8 is swing joint with the recess of 2 tip of drive shaft to can not drive shaft 2 when second location boss 8 rotates around its axis and rotate, only provide jacking force, greatly reduced the rotatory moment of torsion of in-process of impressing, avoided the damage to deep hole gasket 9 structural plane, guaranteed the roughness on deep hole gasket 9 surface.
The flange 3 is provided with a plurality of mounting holes along the circumferential direction, and the flange is mainly used for mounting the positioning bolts 5, and the flange 3 can be fixedly arranged on the cylinder cover through the positioning bolts 5 so as to ensure the fixation of the whole position of the pressing-in device.
Example 2
In another exemplary embodiment of the present invention, a method for using a deep-hole gasket pressing device is provided, which includes the following steps:
step 1: putting the deep hole gasket 9 into liquid nitrogen for freezing for a set time, wherein the freezing time is 5 minutes in the embodiment;
step 2: embedding a flange 3 into a cylinder cover, and fixedly installing the flange 3 on the cylinder cover through a positioning bolt 5;
and 3, step 3: sequentially sleeving a transition gasket 1 and a frozen deep-hole gasket 9 on a first positioning boss 7 of a driving shaft 2, and then enabling the end part of the driving shaft 2 provided with the transition gasket 1 and the deep-hole gasket 9 to penetrate through a flange and be placed in a deep hole of a cylinder cover, so that the rear end (namely the end without the gasket) of the driving shaft 2 is positioned in the flange 3;
and 4, step 4: inserting the ejector rod 6 into the jacking bolt 4, integrally placing the assembled jacking bolt 4 and the ejector rod 6 into the flange 3, and manually rotating the jacking bolt 4 to enable the ejector rod 6 to be screwed into the flange 3 along with the jacking bolt 4 until the jacking bolt 4 cannot be rotated continuously by bare hands;
and 5: the jacking bolt 4 is tightened by using a torque wrench, the tightening torque is 160Nm, the driving shaft 2 is jacked by the mandril 6, and therefore the deep hole gasket 9 is pressed in the deep part of the cylinder cover hole by using the driving shaft 2.
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 (10)
1. The deep hole gasket pressing-in device is characterized by comprising a driving shaft used for pressing the deep hole gasket into a cylinder cover hole, wherein a first positioning boss used for installing the deep hole gasket is fixedly arranged at one end of the driving shaft, the other end of the driving shaft is in contact with an ejector rod, coaxial arrangement is realized between the driving shaft and the ejector rod through a flange, the end part of the driving shaft in contact with the ejector rod and the ejector rod are both located in the flange, a jacking bolt is sleeved on the ejector rod, one end of the jacking bolt is inserted into the flange, and the jacking bolt can drive the ejector rod to move axially along the flange.
2. The deep-hole gasket pressing device according to claim 1, wherein said driving shaft is coaxially disposed with a first positioning boss, and a diameter of said first positioning boss is smaller than a diameter of said driving shaft.
3. The deep hole gasket pressing device according to claim 1, wherein a tapered transition is formed between the driving shaft and the first positioning boss, and a transition gasket for supporting the deep hole gasket is sleeved on the tapered transition.
4. A deep-hole gasket pressing apparatus according to claim 3, wherein said transition gasket is made of a flexible material.
5. The deep hole gasket pressing device according to claim 1, wherein said flange is a hollow structure, the inner diameter of the flange is the same as the outer diameter of the driving shaft, and said driving shaft can slide in the flange along the axial direction thereof.
6. The deep hole gasket pressing device according to claim 1, wherein the jacking bolt is composed of a pushing part and a screwing part which are coaxially arranged, the pushing part is fixedly arranged at one end of the screwing part, the pushing part and the screwing part are both hollow cylindrical structures, the outer diameter of the pushing part is larger than that of the screwing part, the inner diameter of the pushing part is the same as that of the screwing part, and the rod body of the ejector rod is inserted into the pushing part and the screwing part.
7. The deep-hole gasket pressing device according to claim 6, wherein the jacking bolt is coaxially arranged with the flange, the pushing part is positioned in the flange, and the outer wall of the pushing part is in threaded fit with the inner wall of the flange.
8. The deep hole gasket pressing-in device according to claim 6, wherein a limiting part for being pushed by the pushing part is fixedly arranged at one end of the rod body, and the limiting part and the rod body are coaxially arranged.
9. The deep hole gasket pressing device according to claim 1, wherein a hemispherical second positioning boss is fixedly arranged at the end of the ejector rod, which is in contact with the driving shaft, the second positioning boss is coaxially arranged with the ejector rod, a hemispherical groove is arranged at the center of the end of the driving shaft, which is in contact with the ejector rod, and the second positioning boss is placed in the groove.
10. A method of using the deep-hole gasket pressing device according to any one of claims 1 to 9, wherein the method comprises the following steps:
putting the deep hole gasket into liquid nitrogen for freezing;
fixedly arranging the flange on the cylinder cover by using a positioning bolt;
sequentially sleeving a transition gasket and a frozen deep hole gasket on a first positioning boss, and putting the end part of a driving shaft, which is provided with the transition gasket and the deep hole gasket, into a deep hole of a cylinder cover through a flange;
inserting the ejector rod into the jacking bolt, integrally placing the assembled jacking bolt and the ejector rod into the flange, and manually rotating the jacking bolt until the jacking bolt cannot be rotated continuously by bare hands;
and tightening the jacking bolt by using a torque wrench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210852853.2A CN115106752A (en) | 2022-07-20 | 2022-07-20 | Deep hole gasket pressing-in device and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210852853.2A CN115106752A (en) | 2022-07-20 | 2022-07-20 | Deep hole gasket pressing-in device and using method |
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| CN115106752A true CN115106752A (en) | 2022-09-27 |
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| CN202210852853.2A Pending CN115106752A (en) | 2022-07-20 | 2022-07-20 | Deep hole gasket pressing-in device and using method |
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| CN211867668U (en) * | 2020-03-24 | 2020-11-06 | 靖江精智智能科技有限公司 | Gasket assembling tool |
| CN111720597A (en) * | 2020-06-28 | 2020-09-29 | 上海中船三井造船柴油机有限公司 | Safety valve of cylinder cover of marine diesel engine |
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Address after: 266520 No. 501 Lijiang East Road, Huangdao District, Qingdao, Shandong Applicant after: China Shipbuilding Industry Corporation Diesel ENGINE Co.,Ltd. Address before: 266520 No. 501 Lijiang East Road, Huangdao District, Qingdao, Shandong Applicant before: CHINA SHIPBUILDING INDUSTRY CORPORATION DIESEL ENGINE Co.,Ltd. |