CN214445851U - Mounting and dismounting tool for exhaust valve seat - Google Patents
Mounting and dismounting tool for exhaust valve seat Download PDFInfo
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- CN214445851U CN214445851U CN202022785665.1U CN202022785665U CN214445851U CN 214445851 U CN214445851 U CN 214445851U CN 202022785665 U CN202022785665 U CN 202022785665U CN 214445851 U CN214445851 U CN 214445851U
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Abstract
The utility model relates to an installation and disassembly tool of an exhaust valve seat, which is a clamp type assembly tool and comprises a valve body clamp installed on an exhaust valve body and two split type clamp of the valve seat clamp installed on the exhaust valve seat; the valve body clamp comprises a plurality of tensioning threaded holes, and the valve seat clamp comprises a plurality of tensioning through holes at corresponding positions of the tensioning threaded holes; the mounting and dismounting tool also comprises a plurality of tightening bolts which are used for screwing the tightening through holes into the tightening threaded holes to mount the exhaust valve seat; the staggered position of the tensioning through hole on the valve seat clamping hoop also comprises a plurality of jacking threaded holes; the mounting and dismounting tool further comprises a plurality of jacking bolts which are used for screwing the jacking threaded holes to jack the valve body clamp to dismount the valve seat of the grid exhaust valve. The beneficial effect is light simple and convenient assembly discharge valve body and discharge valve disk seat.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to the technical field of machinery, concretely relates to installation and extracting tool of discharge valve disk seat.
[ background of the invention ]
In the case of a marine diesel engine, an exhaust valve is a very important component, and its main function is to release exhaust gas generated by explosion in a combustion chamber by controlling the opening of an exhaust valve rod through oil pressure. Because the opening and closing of the exhaust valve rod are very frequent, the part of the lower portion of the exhaust valve, which is in contact with the valve rod, is usually made of alloy steel materials, but the whole structure of the exhaust valve is large, if the whole exhaust valve is made of alloy steel materials, the cost of the whole exhaust valve is high, and therefore the exhaust valve is designed into an upper part and a lower part, a lower valve seat is made of alloy steel materials, an upper valve body is made of cast iron materials, and the upper part and the lower part are in interference fit for ensuring the sealing property.
For interference fit, the conventional assembly modes mainly comprise knocking, shrinkage fit and cold jacket, if knocking is used, the exhaust valve seat is damaged, the valve body is made of an iron casting and is not suitable for adopting the shrinkage fit, if the cold jacket is adopted, the process is very complicated, and the cost is very high due to the need of cold jacket equipment.
The utility model aims at the above-mentioned technical problem, technical improvement has been carried out.
[ Utility model ] content
The utility model aims at providing a light simple and convenient installation and extracting tool of assembly discharge valve body and discharge valve disk seat.
In order to achieve the purpose, the technical scheme adopted by the utility model is an installation and disassembly tool of the exhaust valve seat, which is a clamp type assembly tool and comprises a valve body clamp installed on the exhaust valve body and two split type clamp clamps of the valve seat clamp installed on the exhaust valve seat; the valve body clamp comprises a plurality of tensioning threaded holes, and the valve seat clamp comprises a plurality of tensioning through holes at corresponding positions of the tensioning threaded holes; the mounting and dismounting tool also comprises a plurality of tightening bolts which are used for screwing the tightening through holes into the tightening threaded holes to mount the exhaust valve seat; the staggered position of the tensioning through hole on the valve seat clamping hoop also comprises a plurality of jacking threaded holes; the mounting and dismounting tool further comprises a plurality of jacking bolts for screwing the jacking threaded holes to jack the valve body clamp to dismount the exhaust valve seat.
Preferably, the mounting and dismounting tool further comprises a plurality of tightening nuts with internal threads and external threads, and the external threads of the tightening nuts are screwed with the tightening threaded holes on the valve body clamp; the tightening bolt is screwed into the internal thread of the tightening nut through the tightening through hole to mount the exhaust valve seat.
Preferably, the mounting and dismounting tool further comprises a plurality of fastening bolts and a plurality of fastening nuts; the valve body clamp and the valve seat clamp are symmetrical two halves of clamp, and the two halves of clamp are connected and fastened through the fastening bolt and the fastening nut.
Preferably, the valve body clamp and the valve seat clamp are provided with a circle of flanges near the inner sides, and the flanges of the valve body clamp and the valve seat clamp are respectively clamped in the sealing ring grooves of the exhaust valve body and the exhaust valve seat when in use.
Preferably, the tightening threaded holes are symmetrically and uniformly distributed on the valve body clamp; the tensioning through holes and the jacking threaded holes are symmetrically and uniformly distributed on the valve seat clamping hoop.
Preferably, the number of the tightening threaded holes, the tightening through holes and the top bracing threaded holes is four.
Preferably, the tightening bolt and the jack bolt are designed as a bolt.
It is still another object of the present invention to provide a method for easily and simply assembling and disassembling the exhaust valve body and the exhaust valve seat.
In order to achieve the above further object, the present invention provides a method for mounting and dismounting a discharge valve seat, which uses the above mounting and dismounting tool for a discharge valve seat, the mounting method comprising the steps of:
s1, fastening the valve body clip on the exhaust valve body;
s2, fastening the valve seat clip on the exhaust valve seat;
s3, the tightening bolt penetrates through the tightening through hole on the valve seat clamp and is connected with the internal thread or the tightening threaded hole of the tightening nut on the valve body clamp;
and S4, pressing the exhaust valve seat clamped by the valve seat clamp into the exhaust valve body by continuously screwing the tightening bolt.
Preferably, the method for mounting and dismounting the exhaust valve seat comprises the following steps:
s5, fastening the valve body clip on the exhaust valve body;
s6, fastening the valve seat clip on the exhaust valve seat;
s7, screwing the top bracing bolt into the top bracing threaded hole on the valve seat clamping hoop until the top bracing bolt is propped against the side face of the valve body clamping hoop;
and S8, ejecting the exhaust valve seat clamped by the valve seat clamp out of the exhaust valve body by continuously screwing the top bracing bolt.
Preferably, in the method for mounting and dismounting the exhaust valve seat, the exhaust valve seat and the exhaust valve body are the exhaust valve seat and the exhaust valve body of the marine diesel engine.
Compared with the prior art, the utility model beneficial effect is: the exhaust valve seat mounting and dismounting tool is simple in structure, convenient to operate, capable of avoiding being knocked to the exhaust valve seat when the exhaust valve seat is mounted and damaged, capable of avoiding using a red sleeve or cold sleeve process, low in cost and capable of solving the problem of difficulty in mounting the exhaust valve seat.
[ description of the drawings ]
FIG. 1 is a front view of a valve body clamp of a tool for mounting and dismounting an exhaust valve seat.
FIG. 2 is a cross-sectional view A-A of a valve body clamp of an installation and removal tool for an exhaust valve seat.
FIG. 3 is an enlarged partial view of a valve body clip of a tool for installation and removal of an exhaust valve seat.
FIG. 4 is a front view of a valve seat clip of a tool for installation and removal of a vent valve seat.
FIG. 5 is a cross-sectional view B-B of a valve seat clip of an installation and removal tool for an exhaust valve seat.
FIG. 6 is an enlarged partial view of a valve seat clip of a removal and installation tool for a vent valve seat.
Fig. 7 is a front view showing a state where the exhaust valve seat attaching and detaching tool is attached to the exhaust valve.
Fig. 8 is a C-C sectional view before mounting of the exhaust valve seat in a state where the mounting and dismounting tool of the exhaust valve seat is mounted on the exhaust valve.
FIG. 9 is an enlarged partial view of the exhaust valve seat prior to installation in a state where the tool for installing and removing the exhaust valve seat is installed on the exhaust valve.
Fig. 10 is a C-C sectional view after the exhaust valve seat is mounted in a state where the mounting and dismounting tool of the exhaust valve seat is mounted on the exhaust valve.
Fig. 11 is a partially enlarged view after the exhaust valve seat is mounted in a state where the mounting and dismounting tool of the exhaust valve seat is mounted on the exhaust valve.
Fig. 12 is a front sectional view showing the removal of the exhaust valve seat in a state where the tool for mounting and removing the exhaust valve seat is mounted on the exhaust valve.
FIG. 13 is an enlarged partial view of the exhaust valve seat prior to removal with the removal tool attached to the exhaust valve.
Fig. 14 is a sectional view after the exhaust valve seat is removed in a state where the tool for mounting and removing the exhaust valve seat is mounted on the exhaust valve.
The reference numerals and components referred to in the drawings are as follows: 1. the valve body clamping hoop comprises a valve body clamping hoop body, 3 fastening bolts, 4 fastening nuts, 5 tensioning nuts, 6 valve seat clamping hoops, 8 tightening bolts, 9 tensioning through holes, 10 jacking threaded holes, 11 jacking bolts.
[ detailed description ] embodiments
The invention will be further described with reference to the following examples and with reference to the accompanying drawings.
Example 1
This embodiment realizes an installation and extracting tool of discharge valve disk seat.
FIG. 1 is a front view of a valve body clamp of a tool for mounting and dismounting an exhaust valve seat. FIG. 2 is a cross-sectional view A-A of a valve body clamp of an installation and removal tool for an exhaust valve seat. FIG. 3 is an enlarged partial view of a valve body clip of a tool for installation and removal of an exhaust valve seat. FIG. 4 is a front view of a valve seat clip of a tool for installation and removal of a vent valve seat. FIG. 5 is a cross-sectional view B-B of a valve seat clip of an installation and removal tool for an exhaust valve seat. FIG. 6 is an enlarged partial view of a valve seat clip of a removal and installation tool for a vent valve seat. As shown in fig. 1, 2, 3, 4, 5, and 6, the mounting and dismounting tool for the exhaust valve seat of the present embodiment is a clip type assembling tool, and includes a valve body clip 1 mounted on the exhaust valve body and two split clips of the valve seat clip 6 mounted on the exhaust valve seat; the valve body clamp 1 comprises a plurality of tensioning threaded holes, and the valve seat clamp 6 comprises a plurality of tensioning through holes 9 at positions corresponding to the tensioning threaded holes; the mounting and dismounting tool also comprises a plurality of tightening bolts 8 which are used for mounting the exhaust valve seat by being screwed into the tightening threaded holes through the tightening through holes 9; the staggered position of the tensioning through hole 9 on the valve seat clamp 6 also comprises a plurality of jacking threaded holes 10; the mounting and dismounting tool further comprises a plurality of jacking bolts 11 which are screwed into the jacking threaded holes 10 to jack the valve body clamp 1 to dismount the exhaust valve seat.
Preferably, the mounting and dismounting tool further comprises a plurality of tightening nuts 5 with internal threads and external threads, and the external threads of the tightening nuts 5 are screwed with the tightening threaded holes on the valve body clamp 1; the tightening bolts 8 are screwed into the female threads of the tightening nuts 5 through the tightening through holes 9 to mount the exhaust valve seat.
Preferably, the mounting and dismounting tool further comprises a plurality of fastening bolts 3 and a plurality of fastening nuts 4; the valve body clamp 1 and the valve seat clamp 6 are symmetrical two halves of clamps, and the two halves of clamps are connected and fastened through the fastening bolt 3 and the fastening nut 4.
Preferably, the valve body clamp 1 and the valve seat clamp 6 are provided with a circle of flanges near the inner sides, and the flanges of the valve body clamp 1 and the valve seat clamp 6 are respectively clamped in the sealing ring grooves of the exhaust valve body and the exhaust valve seat when in use.
Preferably, the tightening threaded holes are symmetrically and uniformly distributed on the valve body clamp 1; the tensioning through holes 9 and the jacking threaded holes 10 are symmetrically and uniformly distributed on the valve seat clamp 6.
Preferably, the tension threaded hole, the tension through hole 9, and the shoring threaded hole 10 are all four.
The tightening bolt 8 and the jack bolt 11 are preferably designed as a single bolt.
Example 2
The embodiment realizes an installation and disassembly method of the exhaust valve seat.
Fig. 7 is a front view showing a state where the exhaust valve seat attaching and detaching tool is attached to the exhaust valve. Fig. 8 is a C-C sectional view before mounting of the exhaust valve seat in a state where the mounting and dismounting tool of the exhaust valve seat is mounted on the exhaust valve. FIG. 9 is an enlarged partial view of the exhaust valve seat prior to installation in a state where the tool for installing and removing the exhaust valve seat is installed on the exhaust valve. Fig. 10 is a C-C sectional view after the exhaust valve seat is mounted in a state where the mounting and dismounting tool of the exhaust valve seat is mounted on the exhaust valve. Fig. 11 is a partially enlarged view after the exhaust valve seat is mounted in a state where the mounting and dismounting tool of the exhaust valve seat is mounted on the exhaust valve. As shown in fig. 7, 8, 9, 10 and 11, the method for mounting and dismounting a valve seat of an exhaust valve of the present embodiment uses the mounting and dismounting tool for a valve seat of an exhaust valve of the above embodiment 1, and the mounting method includes the following steps:
s1, fastening the valve body clamp 1 on the exhaust valve body;
s2, fastening the valve seat clamp 6 on the exhaust valve seat;
s3, the tightening bolt 8 passes through the tightening through hole on the valve seat clamp 6 and is connected with the internal thread or the tightening threaded hole of the tightening nut 5 on the valve body clamp 1;
s4, pressing the exhaust valve seat clamped by the seat clamp 6 into the exhaust valve body by continuously screwing the tightening bolt 8.
Fig. 12 is a front sectional view showing the removal of the exhaust valve seat in a state where the tool for mounting and removing the exhaust valve seat is mounted on the exhaust valve. FIG. 13 is an enlarged partial view of the exhaust valve seat prior to removal with the removal tool attached to the exhaust valve. Fig. 14 is a sectional view after the exhaust valve seat is removed in a state where the tool for mounting and removing the exhaust valve seat is mounted on the exhaust valve. As shown in fig. 12, 13 and 14, the present embodiment is preferably a method for mounting and dismounting a valve seat of an exhaust valve, the dismounting method comprises the following steps:
s5, fastening the valve body clamp 1 on the exhaust valve body;
s6, fastening the valve seat clamp 6 on the exhaust valve seat;
s7, screwing the jacking bolt 11 into the jacking threaded hole 10 on the valve seat clamp 1 until the jacking bolt jacks the side surface of the valve body clamp 1;
s8, ejecting the exhaust valve seat clamped by the valve seat clip 6 out of the exhaust valve body by continuously screwing the above-mentioned jack bolt 11.
Preferably, in the method for mounting and dismounting the exhaust valve seat, the exhaust valve seat and the exhaust valve body are the exhaust valve seat and the exhaust valve body of the marine diesel engine.
Example 3
The embodiment realizes an installation and disassembly tool of an exhaust valve seat and a use method thereof. This embodiment is further specifically implemented on the basis of embodiments 1 and 2.
The purpose of this embodiment is to solve the difficult problem of exhaust valve body and disk seat installation, realizes the light simple and convenient purpose of assembling valve body and disk seat.
Based on above purpose, this embodiment provides an installation and extracting tool of discharge valve disk seat: the clamp type assembling tool comprises two split clamps, a valve body clamp, a valve seat clamp, a connecting bolt and a nut of the clamps, a bolt for tensioning or jacking and a nut for tensioning. The clamp is divided into two halves which are connected through bolts and nuts; the inner sides of the clamping hoops are provided with a circle of flanges, and the flanges of the two clamping hoops are respectively clamped in the sealing ring grooves of the exhaust valve body and the exhaust valve seat when in use; four tensioning nuts 5 with internal and external threads are mounted on one side of a valve body clamp hoop mounted on the exhaust valve body, the external threads of the nuts are screwed with threaded holes in the clamp hoop, and the internal threads are used for mounting bolts during tensioning; the valve seat clamp installed on the exhaust valve seat is provided with four through holes drilled at the position corresponding to the tensioning nut 5 for installing bolts during tensioning, and four threaded holes drilled at the position staggered with the nut for installing bolts during top bracing.
The installation and the extracting tool of discharge valve disk seat of this embodiment simple structure, convenient operation can avoid strikeing it and producing destruction when discharge valve disk seat installation, can avoid using red cover or cold jacket technology simultaneously, and low cost has solved the problem of discharge valve disk seat installation difficulty.
In view of the above, the present embodiment also provides a method for mounting or dismounting a valve seat of an exhaust valve using a mounting and dismounting tool for the valve seat of the exhaust valve.
Fig. 1 is a front view of a valve body clip of an exhaust valve seat mounting and dismounting tool, fig. 2 is a sectional view a-a of the valve body clip of the exhaust valve seat mounting and dismounting tool, and fig. 3 is a partially enlarged view of the valve body clip of the exhaust valve seat mounting and dismounting tool. As shown in the attached figures 1, 2 and 3: the valve body clamp 1 arranged on the exhaust valve body consists of two symmetrical clamp halves; the valve body clamp 1 is connected and fastened through a fastening bolt 3 and a fastening nut 4; a tensioning threaded hole is formed in the valve body clamp 1, and a tensioning nut 5 is installed at the tensioning threaded hole; the tensioning nut 5 is provided with an inner thread and an outer thread, the outer thread is connected with a threaded hole in the valve body clamp 1, and the inner thread is used for connecting the tensioning bolt 5 when tensioning.
Fig. 4 is a front view of a valve seat clip of an exhaust valve seat installation and removal tool, fig. 5 is a cross-sectional view of a valve seat clip of an exhaust valve seat installation and removal tool, and fig. 6 is a partially enlarged view of the valve seat clip of an exhaust valve seat installation and removal tool. As shown in figures 4, 5 and 6: the valve seat clamping hoop 6 is arranged on the valve seat of the exhaust valve and consists of two symmetrical half clamping hoops; the valve seat clamp 6 is connected and fastened through a fastening bolt 3 and a fastening nut 4; the valve seat clamp 6 is provided with a tensioning through hole 9 and a top support threaded hole 10, and the position of the tensioning through hole 9 corresponds to the position of the tensioning nut 5 on the valve seat clamp 1.
Fig. 7 is a front view showing a state where an exhaust valve seat mounting and dismounting tool is mounted on an exhaust valve, fig. 8 is a C-C sectional view showing a state before mounting of the exhaust valve seat in a state where the exhaust valve seat mounting and dismounting tool is mounted on the exhaust valve, and fig. 9 is an enlarged view showing a part before mounting of the exhaust valve seat in a state where the exhaust valve seat mounting and dismounting tool is mounted on the exhaust valve. As shown in fig. 7, 8 and 9: the state is the state before the exhaust valve seat is installed, the flange on the inner side of the clamp 1 is clamped in the sealing ring groove of the exhaust valve body before the exhaust valve seat is installed, and the exhaust valve seat is connected and clamped by the fastening bolt 3 and the fastening nut 4; further, clamping a flange on the inner side of the valve seat clamp 6 in a sealing ring groove of the exhaust valve seat, and connecting and clamping by using a fastening bolt 3 and a fastening nut 4; further, a tightening bolt 8 penetrates through a tightening through hole 9 in the valve seat clamp 6 and is connected with a tightening nut 5 on the valve body clamp 1; further, the exhaust valve seat clamped by the valve seat clamp 6 is pressed into the exhaust valve body by tightening the bolt 8.
Fig. 10 is a C-C sectional view after the exhaust valve seat is mounted in a state where the mounting and dismounting tool of the exhaust valve seat is mounted on the exhaust valve, and fig. 11 is a partially enlarged view after the exhaust valve seat is mounted in a state where the mounting and dismounting tool of the exhaust valve seat is mounted on the exhaust valve. As shown in fig. 10 and 11: this state is a state after the exhaust valve seat is mounted.
Fig. 12 is a sectional view before disassembly of the exhaust valve seat in a state where the tool for assembling and disassembling the exhaust valve seat is installed on the exhaust valve, and fig. 13 is a partially enlarged view before disassembly of the exhaust valve seat in a state where the tool for assembling and disassembling the exhaust valve seat is installed on the exhaust valve. As shown in fig. 12 and 13: the state is the state before the exhaust valve seat is disassembled, the flange on the inner side of the valve body clamp 1 is clamped in the sealing ring groove of the exhaust valve body before the exhaust valve seat is disassembled, and the fastening bolt 3 and the fastening nut 4 are used for connecting and clamping; further, clamping a flange on the inner side of the valve seat clamp 6 in a sealing ring groove of the exhaust valve seat, and connecting and clamping by using a fastening bolt 3 and a fastening nut 4; further, a top bracing bolt 11 is screwed into a top bracing threaded hole 10 on the valve seat clamping hoop 6 until the top bracing bolt is propped against the side face of the valve body clamping hoop 1; further, the exhaust valve seat clamped by the seat clamp 6 can be ejected out of the exhaust valve body by continuously screwing the jack bolt 11.
Fig. 14 is a sectional view after the exhaust valve seat is removed in a state where the tool for mounting and removing the exhaust valve seat is mounted on the exhaust valve. As shown in fig. 14, this state is a state in which the exhaust valve seat is removed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and additions can be made without departing from the principles of the present invention, and these improvements and additions should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides an installation and extracting tool of discharge valve disk seat which characterized in that: the mounting and dismounting tool is a clamp type assembling tool and comprises a valve body clamp (1) arranged on a valve body of the exhaust valve and two split type clamps of a valve seat clamp (6) arranged on a valve seat of the exhaust valve; the valve body clamp (1) comprises a plurality of tensioning threaded holes, and the valve seat clamp (6) comprises a plurality of tensioning through holes (9) at positions corresponding to the tensioning threaded holes; the mounting and dismounting tool also comprises a plurality of tightening bolts (8) which are used for mounting the exhaust valve seat by screwing the tightening through holes (9) into the tightening threaded holes; the staggered positions of the tensioning through holes (9) on the valve seat clamp (6) also comprise a plurality of jacking threaded holes (10); the mounting and dismounting tool further comprises a plurality of jacking bolts (11) which are used for screwing the jacking threaded holes (10) to jack the valve body clamp (1) to dismount the exhaust valve seat.
2. The tool for mounting and dismounting a valve seat of an exhaust valve according to claim 1, wherein: the mounting and dismounting tool also comprises a plurality of tensioning nuts (5) with internal threads and external threads, and the external threads of the tensioning nuts (5) are screwed with tensioning threaded holes in the valve body clamp (1); the tightening bolt (8) is screwed into the internal thread of the tightening nut (5) through the tightening through hole (9) to install the exhaust valve seat.
3. The tool for mounting and dismounting a valve seat of an exhaust valve according to claim 1, wherein: the mounting and dismounting tool also comprises a plurality of fastening bolts (3) and a plurality of fastening nuts (4); the valve body clamp (1) and the valve seat clamp (6) are symmetrical two halves, and the two halves are connected and fastened through the fastening bolt (3) and the fastening nut (4).
4. The tool for mounting and dismounting a valve seat of an exhaust valve according to claim 1, wherein: the valve body clamp (1) and the valve seat clamp (6) are provided with a circle of flanges close to the inner sides, and the flanges of the valve body clamp (1) and the valve seat clamp (6) are respectively clamped in the sealing ring grooves of the exhaust valve body and the exhaust valve seat when the exhaust valve is used.
5. The tool for mounting and dismounting a valve seat of an exhaust valve according to claim 1, wherein: the tensioning threaded holes are symmetrically and uniformly distributed on the valve body clamp (1); the tensioning through holes (9) and the jacking threaded holes (10) are symmetrically and uniformly distributed on the valve seat clamping hoop (6).
6. The tool for mounting and dismounting a valve seat of an exhaust valve according to claim 5, wherein: the number of the tensioning threaded holes, the tensioning through holes (9) and the top bracing threaded holes (10) is four.
7. The tool for mounting and dismounting a valve seat of an exhaust valve according to claim 6, wherein: the tightening screw (8) and the top bracing screw (11) are designed as screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022785665.1U CN214445851U (en) | 2020-11-27 | 2020-11-27 | Mounting and dismounting tool for exhaust valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022785665.1U CN214445851U (en) | 2020-11-27 | 2020-11-27 | Mounting and dismounting tool for exhaust valve seat |
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| CN214445851U true CN214445851U (en) | 2021-10-22 |
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| CN202022785665.1U Active CN214445851U (en) | 2020-11-27 | 2020-11-27 | Mounting and dismounting tool for exhaust valve seat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112571333A (en) * | 2020-11-27 | 2021-03-30 | 沪东重机有限公司 | Mounting and dismounting tool for exhaust valve seat and using method thereof |
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2020
- 2020-11-27 CN CN202022785665.1U patent/CN214445851U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112571333A (en) * | 2020-11-27 | 2021-03-30 | 沪东重机有限公司 | Mounting and dismounting tool for exhaust valve seat and using method thereof |
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