CN111376193A - Fixing device with adjusting function for valve machining - Google Patents
Fixing device with adjusting function for valve machining Download PDFInfo
- Publication number
- CN111376193A CN111376193A CN202010285564.XA CN202010285564A CN111376193A CN 111376193 A CN111376193 A CN 111376193A CN 202010285564 A CN202010285564 A CN 202010285564A CN 111376193 A CN111376193 A CN 111376193A
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- block
- fixedly connected
- fixed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Valve Housings (AREA)
Abstract
The invention discloses a fixing device with an adjusting function for valve machining, which comprises a body, wherein a supporting plate is fixedly connected to the front side of the body, a supporting column is fixedly connected to the top of the supporting plate, an adjusting rod is fixedly connected to the top of the supporting column, a fixing block is sleeved on the surface of the adjusting rod, and a connecting shell is movably connected to the top of the fixing block. The invention solves the problems that the prior valve is generally continuously fixed and adjusted by adopting bolts and nuts, the regulation of the bolts and the nuts is too complicated, and the regulation of the bolts and the nuts is inconvenient for a user to regulate.
Description
Technical Field
The invention belongs to the technical field of valves, and particularly relates to a fixing device with an adjusting function for valve machining.
Background
Valves are accessories for pipelines for opening and closing the pipeline, controlling flow direction, regulating and controlling parameters of the transport medium, and can be classified into shut-off valves, check valves, regulating valves, and the like according to their functions.
The valve needs processing before using, needs a fixing device when processing the valve, prevents that the valve from taking place to rock in processing, because of the size difference of valve processing at every turn, needs a device that can adjust fixed valve, to sum up, the problem that prior art exists is: the existing problem that the adjustment is inconvenient for a user due to the fact that the bolt and the nut are excessively complex to adjust is solved.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a fixing device with an adjusting function for valve processing, which has the advantage of convenience in adjusting a valve and solves the problems that the existing fixing device generally adopts bolts and nuts to continuously fix and adjust the valve, the bolts and nuts are excessively complicated to adjust, and the adjustment by a user is inconvenient.
The invention is realized in such a way, the fixing device with the adjusting function for valve processing comprises a body, wherein a supporting plate is fixedly connected to the front side of the body, a supporting column is fixedly connected to the top of the supporting plate, an adjusting rod is fixedly connected to the top of the supporting column, a fixing block is sleeved on the surface of the adjusting rod, a connecting shell is movably connected to the top of the fixing block, a supporting rod is fixedly connected to the top of the connecting shell, an adjusting plate is fixedly connected to the rear side of the supporting rod, a sleeve plate is sleeved on the surface of the adjusting plate, a fixing shell is movably connected to the inner portion of the sleeve plate, a buckle mechanism is movably connected to the inner portion of the fixing shell, and a limiting mechanism matched with the fixing shell for.
Preferably, the fastening mechanism comprises a clamping block, a first supporting block is fixedly connected to the top of the clamping block, a first spring is fixedly connected to the top of the first supporting block, and the top of the first spring is fixedly connected to the inner wall of the fixed shell.
Preferably, the limiting mechanism comprises a second supporting block, the right side of the second supporting block is fixedly connected with the fixed shell, the left side of the second supporting block is fixedly connected with a movable rod, the left side of the second supporting block is fixedly connected with a second spring, the second spring is sleeved on the surface of the movable rod, the left side of the movable rod is fixedly connected with a fixed plate, the bottom of the fixed plate is fixedly connected with the inner wall of the fixed shell, and the left side of the second spring is fixedly connected with the surface of the movable rod.
Preferably, the fixing shell is internally provided with a first through hole matched with the fixture block, the adjusting plate is internally provided with a second through hole matched with the fixture block, the bottom of the fixture block penetrates through the outer side of the first through hole and extends into the second through hole, the number of the second through holes is several, and the top of the fixture block penetrates through the outer side of the first through hole and is fixedly connected with the surface of the first supporting block.
Preferably, the top of the fixed shell is fixedly connected with a connecting block, the top of the connecting block is fixedly connected with a push rod, a third through hole matched with the connecting block is formed in the sleeve plate, and the top of the connecting block penetrates through the outer side of the third through hole and is fixedly connected with the push rod.
Preferably, the front side and the rear side of the fixed shell are both fixedly connected with a first T-shaped block, and a first T-shaped groove matched with the first T-shaped block for use is formed in the fixed shell.
Preferably, the bottom of the connecting block is fixedly connected with a second T-shaped block, a second T-shaped groove matched with the second T-shaped block for use is formed in the fixed block, the top of the movable rod is fixedly connected with a sliding block, and a sliding groove matched with the sliding block for use is formed in the sleeve plate.
Preferably, the inner wall of the fixing block is fixedly connected with a buckle, a first groove matched with the buckle for use is formed in the connecting shell, a plurality of second grooves matched with the buckle for use are formed in the connecting shell, and the number of the second grooves is several.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention solves the problems that the prior valve is generally continuously fixed and adjusted by adopting bolts and nuts, the regulation of the bolts and the nuts is too complicated, and the regulation of the bolts and the nuts is inconvenient for a user to regulate.
2. According to the invention, the clamping block can enter the inner cavity of the second through hole by arranging the clamping mechanism, so that the sleeve plate is limited, the clamping block cannot be separated from the inner cavity of the second through hole, the sleeve plate cannot be separated from the inner cavity of the second through hole, and the effect of fixing the sleeve plate is achieved.
3. According to the invention, by arranging the limiting mechanism, the sleeve plate can be limited after the clamping block enters the inner cavity of the second through hole, so that the sleeve plate cannot be separated from the adjusting plate.
4. According to the invention, through the matched use of the first through hole and the second through hole, after the fixture block enters the inner cavity of the second through hole, the fixture block can not shake, the friction force of the fixture block during moving is reduced, and a user can pull the push rod more easily and conveniently.
5. The clamping block mechanism is effectively moved by the aid of the connecting block, the third through hole and the push rod which are matched, a user can conveniently move the clamping block, and convenience is improved.
6. According to the invention, the first T-shaped block and the first T-shaped groove are matched for use, so that the movement of the fixed shell is effectively limited, the fixed shell is prevented from deviating during movement, and the movement track of the fixed shell is fixed.
7. The second T-shaped block and the second T-shaped groove are matched for use, so that the movement limiting of the connecting block is effectively realized, the deviation of the connecting block is prevented when the connecting block moves, the movement track of the connecting block is fixed, the movement limiting of the movable rod is effectively realized by the matching use of the sliding block and the sliding groove, the deviation of the movable rod when the movable rod moves is prevented, and the movement track of the movable rod is fixed.
8. The first groove and the second groove are matched for use, so that the fixing block is effectively fixed, the friction force generated when the fixing block moves is reduced, and the fixing block is prevented from deviating after being adjusted.
Drawings
FIG. 1 is a schematic diagram of a structure provided by an embodiment of the present invention;
FIG. 2 is a perspective view of a strap provided in accordance with an embodiment of the present invention;
FIG. 3 is a perspective view of a support post provided by an embodiment of the present invention;
FIG. 4 is a perspective view of an embodiment of the present invention providing an adjustment lever;
FIG. 5 is a partial cross-sectional view of a push rod provided by an embodiment of the present invention;
FIG. 6 is a partial cross-sectional view of a push rod provided by an embodiment of the present invention;
FIG. 7 is a left side cross-sectional view of a putter in accordance with an embodiment of the present invention;
FIG. 8 is a partial cross-sectional view of an embodiment of the present invention providing an adjustment lever;
FIG. 9 is a top cross-sectional view of an adjustment lever and a fixed block provided by an embodiment of the present invention;
fig. 10 is an enlarged view of a portion of fig. 5 a according to an embodiment of the present invention.
In the figure: 1. a body; 2. a support plate; 3. a support pillar; 4. adjusting a rod; 5. a fixed block; 6. connecting blocks; 7. a support bar; 8. an adjusting plate; 9. sheathing; 10. a stationary case; 11. a buckle mechanism; 1101. a clamping block; 1102. a first support block; 1103. a first spring; 12. a limiting mechanism; 1201. a second support block; 1202. a second spring; 1203. a movable rod; 1204 a fixed plate; 13. connecting blocks; 14. a push rod; 15. a first through hole; 16. a second through hole; 17. a limiting groove; 18. a third through hole; 19. a slider; 20. a chute; 21. a first T-shaped block; 22. a first T-shaped groove; 23. a second T-shaped block; 24. a second T-shaped groove; 25. buckling; 26. a first groove; 27. a second groove.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
The structure of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 10, a fixing device with an adjusting function for valve processing according to an embodiment of the present invention includes a body 1, a supporting plate 2 is fixedly connected to a front side of the body 1, a supporting column 3 is fixedly connected to a top of the supporting plate 2, an adjusting rod 4 is fixedly connected to a top of the supporting column 3, a fixing block 5 is sleeved on a surface of the adjusting rod 4, a connecting shell 6 is movably connected to a top of the fixing block 5, a supporting rod 7 is fixedly connected to a top of the connecting shell 6, an adjusting plate 8 is fixedly connected to a rear side of the supporting rod 7, a sleeve plate 9 is sleeved on a surface of the adjusting plate 8, a fixing shell 10 is movably connected inside the sleeve plate 9, a buckle mechanism 11 is movably connected inside the fixing shell 10, and a limiting mechanism 12 is movably connected inside the sleeve.
Referring to fig. 5, the latching mechanism 11 includes a latching block 1101, a first supporting block 1102 is fixedly connected to the top of the latching block 1101, a first spring 1103 is fixedly connected to the top of the first supporting block 1102, and the top of the first spring 1103 is fixedly connected to the inner wall of the fixing shell 10.
Adopt above-mentioned scheme: through setting up buckle mechanism 11, can make fixture block 1101 get into behind the inner chamber of second through-hole 16 to carry on spacingly to lagging 9, make fixture block 1101 can not break away from the inner chamber of second through-hole 16, and then make lagging 9 can not break away from the inner chamber of second through-hole 16, reached the effect fixed to lagging 9.
Referring to fig. 10, the limiting mechanism 12 includes a second supporting block 1201, a right side of the second supporting block 1201 is fixedly connected to the fixed housing 10, a left side of the second supporting block 1201 is fixedly connected to a movable rod 1203, a left side of the second supporting block 1201 is fixedly connected to a second spring 1202, the second spring 1202 is sleeved on a surface of the movable rod 1203, a left side of the movable rod 1203 is fixedly connected to a fixed plate 1204, a bottom of the fixed plate 1204 is fixedly connected to an inner wall of the fixed housing 10, and a left side of the second spring 1202 is fixedly connected to a surface of the movable rod 1203.
Adopt above-mentioned scheme: through setting up stop gear 12, can make behind fixture block 1101 entering second through-hole 16's the inner chamber to spacing set 9 makes set 9 can not break away from regulating plate 8.
Referring to fig. 5, a first through hole 15 matched with the clamping block 1101 is formed in the fixing shell 10, a second through hole 16 matched with the clamping block 1101 is formed in the adjusting plate 8, the bottom of the clamping block 1101 penetrates through the outer side of the first through hole 15 and extends into the second through hole 16, the number of the second through holes 16 is several, and the top of the clamping block 1101 penetrates through the outer side of the first through hole 15 and is fixedly connected with the surface of the first supporting block 1102.
Adopt above-mentioned scheme: through the cooperation that sets up first through-hole 15 and second through-hole 16 and use, can make fixture block 1101 get into behind the inner chamber of second through-hole 16, make fixture block 1101 not take place the phenomenon of rocking, reduced the frictional force when fixture block 1101 removes, convenience of customers is convenient more easily when pulling push rod 14.
Referring to fig. 5, the top of the fixing shell 10 is fixedly connected with a connecting block 13, the top of the connecting block 13 is fixedly connected with a push rod 14, the fixing plate 1204 is provided with a limiting groove 17 used in cooperation with the movable rod 1203, the sleeve plate 9 is provided with a third through hole 18 used in cooperation with the connecting block 13, and the top of the connecting block 13 penetrates through the outer side of the third through hole 18 and is fixedly connected with the push rod 14.
Adopt above-mentioned scheme: through the matching use of the connecting block 13, the third through hole 18 and the push rod 14, the movement of the clamping mechanism 11 is effectively realized, the movement of a user to the clamping block 1101 is facilitated, and the convenience of the invention is improved.
Referring to fig. 7, the front side and the rear side of the fixing shell 10 are fixedly connected with a first T-shaped block 21, and a first T-shaped groove 22 matched with the first T-shaped block 21 is formed in the fixing shell 10.
Adopt above-mentioned scheme: through the cooperation that sets up first T type piece 21 and first T type groove 22 use, effectual realized to the spacing of set casing 10 removal, prevented that set casing 10 from taking place the skew when removing, and realized carrying out the effect of fixing to the removal orbit of set casing 10.
Referring to fig. 6 and 8, a second T-shaped block 23 is fixedly connected to the bottom of the connecting block 13, a second T-shaped groove 24 matched with the second T-shaped block 23 for use is formed in the fixed block 5, a sliding block 19 is fixedly connected to the top of the movable rod 1203, and a sliding groove 20 matched with the sliding block 19 for use is formed in the sleeve plate 9.
Adopt above-mentioned scheme: use through the cooperation that sets up second T type piece 23 and second T type groove 24, the effectual realization is spacing to connecting block 13 removal, connecting block 13 has been prevented from taking place the skew when removing, and realized carrying out the effect of fixing to the removal orbit of connecting block 13, use through the cooperation that sets up slider 19 and spout 20, the effectual realization is spacing to the removal of movable rod 1203, prevented that movable rod 1203 from taking place the skew when removing, and realized carrying out the effect of fixing to the removal orbit of movable rod 1203.
Referring to fig. 9, a buckle 25 is fixedly connected to an inner wall of the fixing block 5, a first groove 26 used in cooperation with the buckle 25 is formed in the connecting shell 6, a second groove 27 used in cooperation with the buckle 25 is formed in the connecting shell 6, and the number of the second grooves 27 is several.
Adopt above-mentioned scheme: through the cooperation that sets up first recess 26 and second recess 27 and use, the effectual fixed of realizing to fixed block 5 has reduced the frictional force when fixed block 5 removes, has prevented that fixed block 5 from adjusting the back and taking place the skew.
The working principle of the invention is as follows:
when the valve is used, when the valve needs to be machined, and a user adjusts the height of the supporting rod 7 according to the requirement of the user, the user rotates the fixing block 5, the fixing block 5 continues to move along the track of the second T-shaped groove 24, the moving of the fixing block 5 drives the buckle 25, when the buckle 25 retreats from the second groove 27 to the first groove 26, the user can adjust the supporting rod 7, when the adjusting rod 4 reaches the destination, the user rotates the fixing block 5, the moving of the fixing block 5 drives the buckle 25, when the buckle 25 is clamped in the inner cavity of the second groove 27, the user can adjust the distance of the sleeve plate 9, the valve is convenient to machine, the user toggles the push rod 14, the moving of the push rod 14 drives the connecting block 13, the moving of the connecting block 13 drives the fixing shell 10, the moving of the fixing shell 10 drives the buckle mechanism 11, when the clamping block 1101 contacts the inner wall of the second through hole, the fixture block 1101 is retracted into the inner cavity of the first through hole 15, the second support block 1201 is driven by the movement of the fixed shell 10, the second spring 1202 is extruded by the movement of the second support block 1201, when the fixture block 1101 is retracted to limit the second through hole 16, a user can pull the push rod 14, when the user pulls the push rod 14 to move to a proper position, the user releases the push rod 14, at the moment, the second spring 1202 is not stressed, the second spring 1202 drives the fixed shell 10, the movement of the fixed shell 10 drives the buckling mechanism 11, when the fixture block 1101 contacts another second through hole 16, the first spring 1103 is not stressed, the first spring 1103 drives the fixture block 1101 to be buckled into the second through hole 16, and adjustment is completed.
In summary, the following steps: this fixing device is used in valve processing with regulatory function, through setting up body 1, backup pad 2, support column 3, adjust pole 4, fixed block 5, connecting block 6, bracing piece 7, regulating plate 8, lagging 9, set casing 10, buckle mechanism 11, stop gear 12, connecting block 13, push rod 14, first through-hole 15, second through-hole 16, spacing groove 17, third through-hole 18, slider 19, spout 20, first T type piece 21, first T type groove 22, second T type piece 23, second T type groove 24, buckle 25, the cooperation of first recess 26 and second recess 27 is used, the current bolt and nut that generally adopts when fixed valve continues fixed adjustment has been solved, bolt and nut adjusts too loaded down with trivial details, the problem that the user of being not convenient for adjusted.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a fixing device is used in valve processing with regulatory function, includes body (1), its characterized in that: a supporting plate (2) is fixedly connected with the front side of the body (1), a supporting column (3) is fixedly connected with the top of the supporting plate (2), the top of the supporting column (3) is fixedly connected with an adjusting rod (4), a fixed block (5) is sleeved on the surface of the adjusting rod (4), the top of the fixed block (5) is movably connected with a connecting shell (6), the top of the connecting shell (6) is fixedly connected with a supporting rod (7), an adjusting plate (8) is fixedly connected to the rear side of the supporting rod (7), a sleeve plate (9) is sleeved on the surface of the adjusting plate (8), a fixed shell (10) is movably connected inside the sleeve plate (9), a buckle mechanism (11) is movably connected inside the fixed shell (10), the inner part of the sleeve plate (9) is movably connected with a limiting mechanism (12) matched with the fixed shell (10).
2. A valve-machining fixture with an adjustment function, as set forth in claim 1, wherein: the buckling mechanism (11) comprises a clamping block (1101), a first supporting block (1102) is fixedly connected to the top of the clamping block (1101), a first spring (1103) is fixedly connected to the top of the first supporting block (1102), and the top of the first spring (1103) is fixedly connected with the inner wall of the fixed shell (10).
3. A valve-machining fixture with an adjustment function, as set forth in claim 1, wherein: the limiting mechanism (12) comprises a second supporting block (1201), the right side of the second supporting block (1201) is fixedly connected with the fixed shell (10), the left side of the second supporting block (1201) is fixedly connected with a movable rod (1203), the left side of the second supporting block (1201) is fixedly connected with a second spring (1202), the second spring (1202) is sleeved on the surface of the movable rod (1203), the left side of the movable rod (1203) is fixedly connected with a fixed plate (1204), the bottom of the fixed plate (1204) is fixedly connected with the inner wall of the fixed shell (10), and the left side of the second spring (1202) is fixedly connected with the surface of the movable rod (1203).
4. A valve-machining fixture with an adjustment function, as set forth in claim 2, wherein: first through-hole (15) of using with fixture block (1101) cooperation is seted up to the inside of set casing (10), second through-hole (16) of using with fixture block (1101) cooperation are seted up to the inside of regulating plate (8), the outside that first through-hole (15) were run through to the bottom of fixture block (1101) extends to the inside of second through-hole (16), the quantity of second through-hole (16) is a plurality of, the fixed surface who runs through to the outside of first through-hole (15) and first supporting block (1102) at the top of fixture block (1101) is connected.
5. A valve-machining fixture with an adjustment function, as set forth in claim 3, wherein: the top fixedly connected with connecting block (13) of set casing (10), top fixedly connected with push rod (14) of connecting block (13), spacing groove (17) that use with movable rod (1203) cooperation are seted up to the inside of fixed plate (1204), third through-hole (18) that use with connecting block (13) cooperation are seted up to the inside of lagging (9), the outside and push rod (14) fixed connection to third through-hole (18) are run through to the top of connecting block (13).
6. A valve-machining fixture with an adjustment function, as set forth in claim 1, wherein: the front side and the rear side of the fixed shell (10) are fixedly connected with a first T-shaped block (21), and a first T-shaped groove (22) matched with the first T-shaped block (21) for use is formed in the fixed shell (10).
7. A valve-machining fixture with an adjustment function, as set forth in claim 3, wherein: the bottom fixedly connected with second T type piece (23) of connecting block (13), second T type groove (24) that use with second T type piece (23) cooperation are seted up to the inside of fixed block (5), top fixedly connected with slider (19) of movable rod (1203), spout (20) that use with slider (19) cooperation are seted up to the inside of lagging (9).
8. A valve-machining fixture with an adjustment function, as set forth in claim 1, wherein: inner wall fixedly connected with buckle (25) of fixed block (5), first recess (26) of using with buckle (25) cooperation are seted up to the inside of connecting shell (6), second recess (27) of using with buckle (25) cooperation are seted up to the inside of connecting shell (6), the quantity of second recess (27) is a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010285564.XA CN111376193A (en) | 2020-04-13 | 2020-04-13 | Fixing device with adjusting function for valve machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010285564.XA CN111376193A (en) | 2020-04-13 | 2020-04-13 | Fixing device with adjusting function for valve machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111376193A true CN111376193A (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010285564.XA Pending CN111376193A (en) | 2020-04-13 | 2020-04-13 | Fixing device with adjusting function for valve machining |
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| CN (1) | CN111376193A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100034952A (en) * | 2008-09-25 | 2010-04-02 | 현대제철 주식회사 | Jig device for disassembling and assembling servo valve |
| CN207272799U (en) * | 2017-09-25 | 2018-04-27 | 无锡市美泰克精密机械有限公司 | A kind of fixture for the processing of valve block |
| CN109202333A (en) * | 2018-09-25 | 2019-01-15 | 何卫统 | A kind of valve components Quick fixing device |
| CN209579299U (en) * | 2019-01-25 | 2019-11-05 | 宁波腾宏科技有限公司 | A kind of steel ball positioning device |
| CN209887455U (en) * | 2019-04-30 | 2020-01-03 | 上海华碧检测技术有限公司 | Static test fixture for surface mounting device |
| CN210139378U (en) * | 2019-05-31 | 2020-03-13 | 北京市液化石油气公司 | General valve pressure testing workbench |
-
2020
- 2020-04-13 CN CN202010285564.XA patent/CN111376193A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100034952A (en) * | 2008-09-25 | 2010-04-02 | 현대제철 주식회사 | Jig device for disassembling and assembling servo valve |
| CN207272799U (en) * | 2017-09-25 | 2018-04-27 | 无锡市美泰克精密机械有限公司 | A kind of fixture for the processing of valve block |
| CN109202333A (en) * | 2018-09-25 | 2019-01-15 | 何卫统 | A kind of valve components Quick fixing device |
| CN209579299U (en) * | 2019-01-25 | 2019-11-05 | 宁波腾宏科技有限公司 | A kind of steel ball positioning device |
| CN209887455U (en) * | 2019-04-30 | 2020-01-03 | 上海华碧检测技术有限公司 | Static test fixture for surface mounting device |
| CN210139378U (en) * | 2019-05-31 | 2020-03-13 | 北京市液化石油气公司 | General valve pressure testing workbench |
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Application publication date: 20200707 |