CN211615310U - Clamping protection device for blade liquid shot blasting - Google Patents
Clamping protection device for blade liquid shot blasting Download PDFInfo
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- CN211615310U CN211615310U CN201921797962.9U CN201921797962U CN211615310U CN 211615310 U CN211615310 U CN 211615310U CN 201921797962 U CN201921797962 U CN 201921797962U CN 211615310 U CN211615310 U CN 211615310U
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Abstract
The utility model provides a clamping protection device of blade liquid peening, the utility model relates to a surface strengthening field. The utility model aims to solve the problem that the clamping protection device is contacted with transformer oil for a long time to cause the deformation of the protection device in the process of liquid shot blasting on the blade in the prior art, and the problem of unable protection blade limit both sides of ventilating among the current clamping protection device, the utility model discloses a work bottom plate, the cylindric lock, fastening bolt, blade fixture and two protection limit shelves poles, the upper surface of work bottom plate has a through-hole A and a pinhole A along work bottom plate thickness direction processing, blade fixture passes through cylindric lock and fastening bolt rigid coupling on the upper surface of work bottom plate, the four corners department of work bottom plate has processed a screw hole B respectively along work bottom plate thickness direction, every protection limit shelves pole is installed on the work bottom plate through one of them screw hole B, the utility model is used for the blade provides the effect that supports the protection when carrying out liquid peening.
Description
Technical Field
The utility model relates to a surface strengthening field, concretely relates to clamping protection device of blade liquid peening.
Background
The blade is under the action of mechanism vibration force and centrifugal force in the operation and service processes, and the local stress, vibration and the like generated by uneven stress in the operation process of the mechanism are the main reasons of surface crack initiation and early propagation of the component. The liquid shot peening strengthening can effectively improve the fatigue strength of the blade, thereby prolonging the service life of the whole unit.
In the shot blasting process of the blades of the air compressor, the blades are made of materials with low hardness, and the traditional pneumatic shot blasting method generally adopts materials such as rubber, nylon and polyurethane. However, in the liquid peening implementation process, the clamping protection device is in contact with transformer oil for a long time, so that the deformation of the protection device is easily caused, and meanwhile, the thinner parts of the two sides of the air inlet and outlet edges of the blade are easily damaged in the peening process, so that the development of the clamping protection device for the blade in the liquid peening process is very in line with the actual requirement.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve among the prior art carrying out the peening in-process to the blade because clamping protection device leads to protection device's deformation with transformer oil contact for a long time to and can't protect the problem of blade air inlet and outlet limit both sides among the current clamping protection device, and then provide a clamping protection device of blade liquid peening.
A clamping protection device for blade liquid shot blasting comprises a working bottom plate, a cylindrical pin, a fastening bolt, a blade clamping mechanism and two protection edge stop rods, wherein a through hole A and a pin hole A are processed on the upper surface of the working bottom plate along the thickness direction of the working bottom plate;
further, the blade clamping mechanism comprises a left stop block, a connecting pin, a rotating plate, a fixed block, a right stop block, a butterfly bolt and two protective gaskets, one end of the fixed block is fixedly connected with one end of the left stop block, the other end of the left stop block is provided with a connecting pin hole A, one end of the rotating plate is provided with a connecting pin hole B, the connecting pin is arranged in the connecting pin hole A and the connecting pin hole B, the left stop block is hinged with the rotating plate through the connecting pin, the other end of the rotating plate is fixedly connected with one end of the right stop block, the other end of the right stop block is provided with a through hole B, the other end of the fixed block is provided with a threaded hole A, the threaded section of the butterfly bolt is arranged in the through hole B and the threaded hole A, the butterfly bolt is in threaded connection with the fixed block, one protective gasket is fixedly connected to one side of the fixed block, which is opposite to the, the cylindrical pins are arranged in the pin holes A and the pin holes B and are respectively in interference fit with the fixed type block and the working bottom plate, the thread sections of the fastening bolts are arranged in the through hole A and the threaded hole B, and the fastening bolts are in threaded connection with the fixed type block;
further, the protective gasket is an oil-resistant rubber gasket;
furthermore, the guard edge stop rod comprises a stop rod, an adjusting bolt, a support rod, a connecting rod, a gasket, an inner hexagon bolt, a clamping block, a fixing nut, a pull rod and a matching sleeve, wherein a thread section is processed at one end of the connecting rod, the fixing nut is sleeved on the thread section of the connecting rod and is in threaded connection with the connecting rod, the closed end of the clamping block is sleeved on the connecting rod, a locking thread hole is processed at one end of the pull rod, the thread section of the inner hexagon bolt is arranged in the locking thread hole and is in threaded connection with the pull rod, the gasket is arranged between the inner hexagon bolt and the pull rod, a connecting through hole A is processed on the outer circular surface of the other end of the pull rod, the axis of the connecting through hole A is perpendicular to the axis of the pull rod, the open end of the closed end of the clamping block is sleeved at one end of the pull rod provided, the two connecting through holes B are coaxially arranged, the axis of each connecting through hole B is perpendicular to the axis of the matching sleeve, the matching sleeve is sleeved at one end, provided with the connecting through hole A, of the pull rod, the connecting through hole A and the two connecting through holes B are coaxially arranged, one end of the supporting rod is arranged in the connecting through hole A and the two connecting through holes B, the supporting rod is detachably connected with the pull rod through an inner hexagonal bolt, the other end of the supporting rod is provided with a connecting through hole C, the axis of the connecting through hole C is perpendicular to the axis of the supporting rod, an adjusting threaded hole is formed in the outer circular surface of the baffle rod, the axis of the adjusting threaded hole is perpendicular to the axis of the baffle rod, the threaded section of the adjusting bolt is arranged in the connecting through hole C and the adjusting threaded hole;
furthermore, two notches A are symmetrically processed at the other end of the supporting rod along the length direction of the supporting rod, a connecting through hole C is processed on the side wall of one notch A, and the axis of the connecting through hole C is perpendicular to the axis of the supporting rod;
furthermore, a notch B is processed at one end of the blocking rod, an adjusting threaded hole is processed in the side wall of the notch B, the axis of the connecting through hole C is perpendicular to the axis of the supporting rod, and the notch B and the notch A are arranged in a matched mode;
furthermore, M clamp installation grooves are machined in the upper surface of the working bottom plate at equal intervals along the circumferential direction, and M is a positive integer;
further, the value of M is 4-6;
further, the working bottom plate is a No. 45 steel plate;
compared with the prior art, the utility model following beneficial effect has:
1. the utility model provides a clamping protection device for blade liquid shot blasting, which can support and protect the blade when the blade is in the liquid shot blasting process; the working efficiency is improved; the cost is reduced.
2. The utility model provides a pair of work bottom plate adopts the steel sheet to make among the clamping protection device of blade liquid peening, has increased the durability, has designed removable blade fixture simultaneously, can with the blade centre gripping in blade fixture to paste resistant oily rubber gasket with the contact surface of blade in blade fixture, when making the blade fixture outside carry out peening processing, inside also can not receive the influence.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a top view of the present invention;
fig. 3 is a front view of the protective edge guard bar 11 of the present invention;
fig. 4 is a left side view of the protective edge guard bar 11 of the present invention;
fig. 5 is a top sectional view of the protective edge bar 11 of the present invention;
in the figure, 1 a working bottom plate, 2 cylindrical pins, 3 left stoppers, 4 pins, 5 rotating plates, 6 bolts, 7 fixed type blocks, 8 right stoppers, 9 butterfly bolts, 10 oil-resistant rubber, 11 protective edge stopper rods, 11-1 stopper rods, 11-2 adjusting bolts, 11-3 supporting rods, 11-4 connecting rods, 11-5 gaskets, 11-6 hexagon socket bolts, 11-7 clamping blocks, 11-8 fixing nuts, 11-9 pull rods and 11-10 matching sleeves.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 and 2, and the clamping protection device for blade liquid shot blasting comprises a working bottom plate 1, a cylindrical pin 2, a fastening bolt 6, a blade clamping mechanism and two protection edge blocking rods 11, wherein a through hole a and a pin hole a are processed on the upper surface of the working bottom plate 1 along the thickness direction of the working bottom plate 1, the blade clamping mechanism is fixedly connected to the upper surface of the working bottom plate 1 through the cylindrical pin 2 and the fastening bolt 6, a threaded hole B is respectively processed at four corners of the working bottom plate 1 along the thickness direction of the working bottom plate 1, and each protection edge blocking rod 11 is installed on the working bottom plate 1 through one of the threaded holes B.
Require to carry out hydraulic peening processing to blade body, fillet, reason board position at blade peening in-process, the utility model discloses need centre gripping protection blade tenon position in work, blade fixture can change according to the tenon size of difference before work, but the blade of the fixed dovetail of blade cavity clamp splice centre gripping, circumference dovetail, fir-type isotructure form tenon. The size of the cavity in the blade is matched according to the size of the blade tenon, and the protective edge stop lever 11 is adjusted to a proper position and angle along with the shape and the molded line of the blade. The average distance between the blade and the stop lever is half of the diameter of the shot used, so as to protect the air inlet and outlet protection edges of the blade from being damaged in the shot blasting process.
The second embodiment is as follows: the present embodiment is described with reference to fig. 2, and is further limited to the blade clamping mechanism in the first embodiment, in the present embodiment, the blade clamping mechanism includes a left block 3, a connecting pin 4, a rotating plate 5, a fixed block 7, a right block 8, a butterfly bolt 9 and two protective spacers 10, one end of the fixed block 7 is fixedly connected to one end of the left block 3, the other end of the left block 3 is formed with a connecting pin hole a, one end of the rotating plate 5 is formed with a connecting pin hole B, the connecting pin 4 is disposed in the connecting pin hole a and the connecting pin hole B, the left block 3 is hinged to the rotating plate 5 via the connecting pin 4, the other end of the rotating plate 5 is fixedly connected to one end of the right block 8, the other end of the right block 8 is formed with a through hole B, the other end of the fixed block 7 is formed with a threaded hole a, the threaded section of the butterfly bolt 9 is disposed in the through hole B and the, and the butterfly bolt 9 is in threaded connection with the fixed block 7, one side of the fixed block 7 opposite to the rotating plate 5 is fixedly connected with a protective gasket 10, the upper surface of the fixed block 7 is provided with a threaded hole B and a pin hole B, the cylindrical pin 2 is arranged in the pin hole A and the pin hole B, the cylindrical pin 2 is in interference fit with the fixed block 7 and the working bottom plate 1, the thread section of the fastening bolt 6 is arranged in a through hole A and a threaded hole B, and the fastening bolt 6 is in threaded connection with the fixed block 7. Other components and connection modes are the same as those of the first embodiment.
In this embodiment, the operator can control the closing of the blade holding mechanism by the butterfly bolt 9, and the blade can be detached and replaced.
The third concrete implementation mode: the present embodiment is described with reference to fig. 2, and the present embodiment further defines the protective gasket 10 according to the first embodiment, and in the present embodiment, the protective gasket 10 is an oil-resistant rubber gasket. The other components and the connection mode are the same as those of the second embodiment.
In the embodiment, the thickness of the oil-resistant rubber gasket is 1mm-3mm, the purpose of adding the oil-resistant rubber gasket is to prevent the blade clamping mechanism from directly clamping to cause part damage, and the protective gasket 10 is bonded on one side of the fixed block 7 opposite to the rotating plate 5.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 5, and the embodiment is further limited to the protective edge stop lever 11 described in the first embodiment, in the embodiment, the protective edge stop lever 11 includes a stop rod 11-1, an adjusting bolt 11-2, a support rod 11-3, a connecting rod 11-4, a washer 11-5, an inner hexagon bolt 11-6, a clamping block 11-7, a fixing nut 11-8, a pull rod 11-9 and a matching sleeve 11-10, one end of the connecting rod 11-4 is processed with a threaded section, the fixing nut 11-8 is sleeved on the threaded section of the connecting rod 11-4, the fixing nut 11-8 is connected with the connecting rod 11-4 by a thread, the closed end of the clamping block 11-7 is sleeved on the connecting rod 11-4, one end of the pull rod 11-9 is processed with a locking threaded hole, the thread section of the inner hexagon bolt 11-6 is arranged in the locking thread hole, the inner hexagon bolt 11-6 is in threaded connection with the pull rod 11-9, a gasket 11-5 is arranged between the inner hexagon bolt 11-6 and the pull rod 11-9, a connecting through hole A is processed on the outer circular surface of the other end of the pull rod 11-9, the axis of the connecting through hole A is vertical to the axis of the pull rod 11-9, the open end of the closed end of the clamping block 11-7 is sleeved at one end of the pull rod 11-9 provided with the locking thread hole, two connecting through holes B are processed on the outer circular surface of the matching sleeve 11-10, the two connecting through holes B are coaxially arranged, the axis of each connecting through hole B is vertical to the axis of the matching sleeve 11-10, the matching sleeve 11-10 is sleeved at one end of the pull rod 11-9 provided with the connecting through, the connecting through hole A and the two connecting through holes B are coaxially arranged, one end of the support rod 11-3 is arranged in the connecting through hole A and the two connecting through holes B, the support rod 11-3 is detachably connected with the pull rod 11-9 through a hexagon socket head cap screw 11-6, the other end of the support rod 11-3 is provided with a connecting through hole C, the axis of the connecting through hole C is perpendicular to the axis of the support rod 11-3, the outer circular surface of the baffle rod 11-1 is provided with an adjusting threaded hole, the axis of the adjusting threaded hole is perpendicular to the axis of the baffle rod 11-1, the threaded section of the adjusting bolt 11-2 is arranged in the connecting through hole C and the adjusting threaded hole, and the adjusting bolt 11-2 is in threaded connection with the baffle rod 11-1. Other components and connection modes are the same as those of the first embodiment.
In the embodiment, an operator can adjust the position of the baffle rod 11-1 relative to the supporting rod 11-3 through the adjusting bolt 11-2, and can adjust the position of the clamping block 11-7 relative to the connecting rod 11-4 when the inner hexagonal bolt 11-6 is in a relaxed state, so that the multi-angle adjustable effect is realized, and when the inner hexagonal bolt 11-6 is in a relaxed state, the clamping block 11-7 can move along the length direction of the connecting rod 11-4, so that the multi-angle adjustable liquid-blasting-head blade is suitable for protecting two sides of different blades in liquid blasting processes at different positions.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 3, and is further limited to the support rod 11-3 described in the first embodiment, in the present embodiment, two notches a are symmetrically processed at the other end of the support rod 11-3 along the length direction of the support rod 11-3, a connecting through hole C is processed at the side wall of one notch a, and the axis of the connecting through hole C is perpendicular to the axis of the support rod 11-3. The other components and the connection mode are the same as those of the fourth embodiment.
The sixth specific implementation mode: the present embodiment is described with reference to fig. 3, and is further limited to the bar 11-1 according to the fifth embodiment, in the present embodiment, a notch B is formed at one end of the bar 11-1, an adjusting threaded hole is formed in a side wall of the notch B, an axis of the connecting through hole C is perpendicular to an axis of the support rod 11-3, and the notch B and the notch a are disposed in a matching manner. The other components and the connection mode are the same as those of the fourth embodiment.
The baffle rod 11-1 and the support rod 11-3 can be better connected by combining the contents described in the fifth embodiment and the sixth embodiment, if the notch a and the notch B are not provided, the baffle rod 11-1 and the support rod 11-3 are both cylinders, and when the two cylinders are connected, point contact is performed, so that the stability during connection is seriously influenced, and if the notch is provided, the baffle rod and the support rod are in surface contact during connection, so that the attaching space is increased, and the stability is improved.
The seventh embodiment: the present embodiment will be described with reference to fig. 1, and the present embodiment is further limited to the work base plate 1 according to the fifth embodiment, in which M jig mounting grooves are equidistantly machined in the circumferential direction on the upper surface of the work base plate 1, and M is a positive integer. Other components and connection modes are the same as those of the first embodiment.
The specific implementation mode is eight: the present embodiment will be described with reference to fig. 1, and the present embodiment further limits the number of the jig mounting grooves described in the fifth embodiment, and in the present embodiment, the value of M is 4 to 6. Other components and connection modes are the same as those of the first embodiment.
The specific implementation method nine: the present embodiment will be described with reference to fig. 3, and the present embodiment further defines the work board 1 according to the fifth embodiment, and in the present embodiment, the work board 1 is a 45-gauge steel plate. The other components and the connection mode are the same as those of the fourth embodiment.
In the present embodiment, the working bottom plate 1 is made of an economical steel material, i.e., a commonly used steel 45, and the yield strength of the material is not lower than 200MPa, and in order to increase the strength of other components, the material of the other components is also made of steel 45, and the working bottom plate 1 may also be made of other economical steel materials, such as Q235 steel.
Principle of operation
The utility model discloses will accomplish hydraulic peening in advance when using and prepare, and prepare after the test block peening the utility model discloses protection device, open butterfly bolt 9 at first, make right dog 8 and fixed type piece 7 separation, pack the blade into blade fixture, screw up butterfly bolt 9, check whether fixed effective, install and adjust two protection edge shelves poles 11, according to the shape and the size of blade, select the suitable position of protection edge shelves pole 11, arbitrary two in four corners department on the work bottom plate 1 promptly, and make it close to the blade and advance the air discharge edge, check whether fixed, protect effective, place protection device on the work revolving stage, carry out peening treatment; after a blade liquid peening is accomplished, because the position of fixed protection limit shelves pole has been confirmed, when continuing to carry out liquid peening for the blade of the same kind, only need open or closed butterfly bolt 9 changes the blade to carry out the peening to the new blade that the clamp is good can, at last will the utility model discloses lift off from the lathe, the clearance is for use.
Claims (9)
1. The utility model provides a clamping protection device of blade liquid peening, its characterized in that, protection device includes work bottom plate (1), cylindric lock (2), fastening bolt (6), blade fixture and two protection limit shelves pole (11), the upper surface of work bottom plate (1) is processed along the thickness direction of work bottom plate (1) has a through-hole A and a pinhole A, and blade fixture passes through cylindric lock (2) and fastening bolt (6) rigid coupling on the upper surface of work bottom plate (1), and the four corners department of work bottom plate (1) is processed respectively along the thickness direction of work bottom plate (1) has a screw hole B, and every protection limit shelves pole (11) are installed on work bottom plate (1) through one of them screw hole B.
2. The clamping protection device for the liquid shot blasting of the blades as claimed in claim 1, wherein the blade clamping mechanism comprises a left block (3), a connecting pin (4), a rotating plate (5), a fixed block (7), a right block (8), a butterfly bolt (9) and two protection gaskets (10), one end of the fixed block (7) is fixedly connected with one end of the left block (3), the other end of the left block (3) is provided with a connecting pin hole A, one end of the rotating plate (5) is provided with a connecting pin hole B, the connecting pin (4) is arranged in the connecting pin hole A and the connecting pin hole B, the left block (3) is hinged with the rotating plate (5) through the connecting pin (4), the other end of the rotating plate (5) is fixedly connected with one end of the right block (8), the other end of the right block (8) is provided with a through hole B, the other end of the fixed block (7) is provided with a threaded hole A, the screw thread section of butterfly bolt (9) sets up in through-hole B and screw hole A, and butterfly bolt (9) and fixed type piece (7) threaded connection, the relative one side difference rigid coupling of fixed type piece (7) and rotor plate (5) has a protection gasket (10), fixed type piece (7) upper surface processing has a screw hole B and a pinhole B, cylindric lock (2) set up in pinhole A and pinhole B, and cylindric lock (2) respectively with fixed type piece (7) and work bottom plate (1) interference fit, the screw thread section of fastening bolt (6) sets up in a through-hole A and a screw hole B, and fastening bolt (6) and fixed type piece (7) threaded connection.
3. The clamping protector for blade liquid peening according to claim 2, wherein the protective pad (10) is an oil-resistant rubber pad.
4. The clamping protection device for the blade liquid shot blasting according to claim 1, wherein the protective edge blocking rod (11) comprises a blocking rod (11-1), an adjusting bolt (11-2), a support rod (11-3), a connecting rod (11-4), a gasket (11-5), an inner hexagon bolt (11-6), a clamping block (11-7), a fixing nut (11-8), a pull rod (11-9) and a matching sleeve (11-10), a threaded section is processed at one end of the connecting rod (11-4), the fixing nut (11-8) is sleeved on the threaded section of the connecting rod (11-4), the fixing nut (11-8) is in threaded connection with the connecting rod (11-4), the closed end of the clamping block (11-7) is sleeved on the connecting rod (11-4), one end of the pull rod (11-9) is processed with a locking threaded hole, the thread section of the inner hexagon bolt (11-6) is arranged in the locking threaded hole, the inner hexagon bolt (11-6) is in threaded connection with the pull rod (11-9), a gasket (11-5) is arranged between the inner hexagon bolt (11-6) and the pull rod (11-9), the outer circular surface of the other end of the pull rod (11-9) is processed with a connecting through hole A, the axis of the connecting through hole A is vertically arranged with the axis of the pull rod (11-9), the open end of the closed end of the clamping block (11-7) is sleeved at one end of the pull rod (11-9) provided with the locking threaded hole, the outer circular surface of the matching sleeve (11-10) is processed with two connecting through holes B, the two connecting through holes B are coaxially arranged, the axis of each connecting through hole B is vertically arranged with the axis of the matching sleeve (11-10), the matching sleeve (11-10) is sleeved at one end of the pull rod (11-9) provided with the connecting through hole A, the connecting through hole A and the two connecting through holes B are coaxially arranged, one end of the support rod (11-3) is arranged in the connecting through hole A and the two connecting through holes B, the supporting rod (11-3) is detachably connected with the pull rod (11-9) through an inner hexagon bolt (11-6), a connecting through hole C is machined in the other end of the supporting rod (11-3), the axis of the connecting through hole C is perpendicular to the axis of the supporting rod (11-3), an adjusting threaded hole is machined in the outer circular surface of the baffle rod (11-1), the axis of the adjusting threaded hole is perpendicular to the axis of the baffle rod (11-1), the threaded section of the adjusting bolt (11-2) is arranged in the connecting through hole C and the adjusting threaded hole, and the adjusting bolt (11-2) is in threaded connection with the baffle rod (11-1).
5. The clamping protector for blade liquid peening according to claim 4, wherein the other end of the support rod (11-3) is symmetrically provided with two notches A along the length direction of the support rod (11-3), wherein a connecting through hole C is formed on the side wall of one notch A, and the axis of the connecting through hole C is perpendicular to the axis of the support rod (11-3).
6. The clamping protection device for blade liquid peening according to claim 5, wherein one end of the baffle bar (11-1) is formed with a notch B, the side wall of the notch B is formed with an adjusting threaded hole, and the notch B and the notch A are arranged in a matching manner.
7. The clamping protection device for blade liquid peening according to claim 1, wherein M fixture mounting grooves are machined on the upper surface of the working base plate (1) at equal intervals along the circumferential direction, and M is a positive integer.
8. The clamping protection device for blade liquid peening according to claim 7, wherein the value of M is 4-6.
9. The clamping protection device for blade liquid peening according to claim 1, wherein the work base plate (1) is a 45-gauge steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921797962.9U CN211615310U (en) | 2019-10-24 | 2019-10-24 | Clamping protection device for blade liquid shot blasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921797962.9U CN211615310U (en) | 2019-10-24 | 2019-10-24 | Clamping protection device for blade liquid shot blasting |
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| Publication Number | Publication Date |
|---|---|
| CN211615310U true CN211615310U (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921797962.9U Active CN211615310U (en) | 2019-10-24 | 2019-10-24 | Clamping protection device for blade liquid shot blasting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134300A (en) * | 2021-12-13 | 2022-03-04 | 中船重工龙江广瀚燃气轮机有限公司 | Blade air inlet and outlet edge shot blasting protection device |
-
2019
- 2019-10-24 CN CN201921797962.9U patent/CN211615310U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134300A (en) * | 2021-12-13 | 2022-03-04 | 中船重工龙江广瀚燃气轮机有限公司 | Blade air inlet and outlet edge shot blasting protection device |
| CN114134300B (en) * | 2021-12-13 | 2023-12-05 | 中船重工龙江广瀚燃气轮机有限公司 | Blade advances exhaust limit peening protection device |
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