CN114440073B - Fixing device of liquid level alarm - Google Patents
Fixing device of liquid level alarm Download PDFInfo
- Publication number
- CN114440073B CN114440073B CN202210047407.4A CN202210047407A CN114440073B CN 114440073 B CN114440073 B CN 114440073B CN 202210047407 A CN202210047407 A CN 202210047407A CN 114440073 B CN114440073 B CN 114440073B
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- CN
- China
- Prior art keywords
- liquid level
- adjusting
- level alarm
- fixed
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007788 liquid Substances 0.000 title claims abstract description 79
- 238000009434 installation Methods 0.000 claims description 14
- 230000000712 assembly Effects 0.000 claims 4
- 238000000429 assembly Methods 0.000 claims 4
- 239000012530 fluid Substances 0.000 claims 4
- 238000001514 detection method Methods 0.000 description 5
- 210000005056 cell body Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
Abstract
The invention provides a fixing device of a liquid level alarm, which comprises a fixing table, a driving component and a plurality of fixing rods, wherein the fixing table is provided with a threaded groove for a liquid level alarm upright rod to pass through and to be fixed, the fixing table is circumferentially provided with a plurality of adjusting seats positioned at the outer side of the threaded groove, the fixing rods are in sliding connection with the adjusting seats through corresponding transverse adjusting components, the fixing rods are used for fixing the liquid level alarm, the adjusting seats are rotationally connected with adjusting rods, the driving component drives the adjusting seats to be in sliding connection with the fixing table through corresponding adjusting rods, a cavity is arranged in the fixing table, the driving component is arranged in the cavity, and one side of the fixing table is connected with a mounting component. The screw thread groove can be used for the vertical rod of the liquid level alarm to pass through, can be used for fixing the screw thread type liquid level alarm and the flange plate mounting table type liquid level alarm, can be used for adjusting the position of the fixing rod according to the flange plate mounting table, and has strong applicability and simple and convenient operation.
Description
Technical Field
The invention relates to the technical field of liquid level alarms, in particular to a fixing device of a liquid level alarm.
Background
The liquid level alarm can detect the water level and send out the warning, and liquid level alarm is various, cause the mount table of liquid level alarm also to have multiple types, for example screw-type mount table and ring flange type mount table, and ring flange mount table also has multiple specifications, when want to measure liquid water level, need build different fixed stations according to the liquid level alarm that carries different types mount tables, cause the problem that fixed station suitability is weak, and liquid level alarm installs also inconveniently, the installation rate is slow, for example a liquid level alarm of patent number CN202021350109.5 adds engineering and has seal structure's liquid level alarm and discloses including the welded plate, the ladder groove has been seted up to the upper surface of welded plate, the inner wall sliding connection of ladder groove has the liquid level detection tube, the top fixedly connected with mounting panel of liquid level detection tube, the upper surface of ladder groove has the seal groove, the inner wall of seal groove is equipped with the sealing washer, the surface sliding connection of liquid level detection tube has the floating ring, the inner wall fixed mounting of floating ring has the magnetic path, the inner wall fixed mounting of liquid level detection tube has high position stem pipe and low position spring fixed mounting respectively, the liquid level detection tube is suitable for the high-level reed fixed mounting has the low position stem pipe and low position spring fixed mounting respectively, the low position spring fixed mounting, and the low position bolt is suitable for installing and the mounting in proper order, and the low position bolt is difficult to be installed when the high and low position bolt is required to be installed in the well in proper order.
Disclosure of Invention
Therefore, the invention provides the fixing device for the liquid level alarm, which can fix the threaded installation platform type liquid level alarm and the flange installation platform type liquid level alarm, adjust the position of the fixing rod according to the diameter of the flange installation platform, and align the through hole of the flange installation platform, so that the fixing device is simple, convenient and quick to install and has strong applicability.
The technical scheme of the invention is realized as follows:
the utility model provides a fixing device of liquid level alarm, includes fixed station, drive assembly and a plurality of dead lever, the fixed station is equipped with the thread groove that supplies liquid level alarm pole setting to pass and fix, the fixed station circumference is equipped with and is located a plurality of regulation seats in the thread groove outside, the dead lever through corresponding horizontal regulation subassembly with regulation seat sliding connection, a plurality of the dead lever is used for fixed liquid level alarm, regulation seat rotates and is connected with the regulation pole, drive assembly through corresponding the regulation pole drive regulation seat sliding connection in the fixed station, be equipped with the cavity in the fixed station, drive assembly locates in the cavity, one side of fixed station is connected with installation component.
Preferably, the transverse adjusting component comprises a guide connecting seat and a spring, the guide connecting seat is in sliding connection with the adjusting seat through the spring, one end of the fixing rod is fixed on the guide connecting seat, the other end of the fixing rod is inserted into a through hole of the liquid level alarm mounting table, and a plurality of guide connecting seats of the transverse adjusting component are connected through adjusting rings.
Preferably, the fixing rod comprises an L-shaped connecting rod and an inserting rod, one end of the L-shaped connecting rod is fixed on the guiding connecting seat, and the free end of the L-shaped connecting rod is connected with the inserting rod.
Preferably, the adjusting seat is provided with a groove body, the guide connecting seat is slidably connected in the groove body, and two ends of the spring are respectively connected with the groove body and the guide connecting seat.
Preferably, the driving assembly comprises a main driving wheel and a plurality of driven wheels, the main driving wheel is provided with a through groove which is coaxial with the axis of the thread groove, the driven wheels are meshed with the main driving wheel, the adjusting rod is in threaded connection with the corresponding driven wheels, and the main driving wheel and the driven wheels are respectively connected in the cavity of the fixed table in a rotating way through corresponding supporting rings.
Preferably, a first annular groove is formed at one end of the support ring facing the driving assembly, second annular grooves are formed at two sides of the main driving wheel and the driven wheels respectively, and a plurality of balls are embedded between the first annular groove and the second annular grooves.
Preferably, the driving assembly is connected with a driving handle extending out of the fixing table.
Preferably, a connecting groove is formed in the central shaft of the driven wheel, and the adjusting rod is connected with the connecting groove in a threaded mode.
Preferably, the mounting assembly comprises a connecting plate and a mounting plate, one end of the connecting plate is connected with the fixing table, the free end of the connecting plate is connected with the mounting plate, and the mounting plate is used for mounting the fixing table in liquid of liquid level to be measured.
Compared with the prior art, the invention has the beneficial effects that:
according to the fixing device for the liquid level alarm, the upright rod of the liquid level alarm is provided with the liquid level sensor, penetrates through the threaded groove and extends into a water area of the liquid level to be measured, the threaded groove can be used for being matched with the threaded installation platform type liquid level alarm, the threaded installation platform type liquid level alarm can be fixed, the fixed flange installation platform type liquid level alarm can also be matched with a plurality of fixing rods, the diameter of the circle surrounded by the fixing rods can be adjusted through the transverse adjusting component, the fixing rods are used for matching with flanges with different diameters, the fixing rods can be aligned with through holes of the flange installation platform of the liquid level alarm at the same time, the driving component drives the adjusting rod to move downwards, the fixing rods are driven to be inserted into the through holes of the flange installation platform of the liquid level alarm at the same time, the flange installation platform type liquid level alarm can be fixed quickly, and the fixing device has the advantages of high applicability and simplicity, convenience and rapidness in installation.
Drawings
FIG. 1 is a schematic perspective view of a fixing device of a liquid level alarm according to the present invention;
FIG. 2 is a schematic top view of a fixing device of a liquid level alarm according to the present invention;
FIG. 3 is a schematic view of the partial cross-sectional structure of A-A in FIG. 2;
FIG. 4 is an enlarged schematic view of the portion A in FIG. 3;
in the figure, a fixed table 1, a cavity 2, a driving component 3, a main driving wheel 31, a driven wheel 32, a through groove 33, a supporting ring 34, a first annular groove 35, a second annular groove 36, a ball bearing 37, a driving handle 38, a connecting groove 39, a fixed rod 4, a connecting rod 41L, a plug rod 42, a threaded groove 5, a regulating seat 6, a mounting component 7, a connecting plate 71, a mounting plate 72, a transverse regulating component 8, a guiding connecting seat 81, a spring 82, a regulating ring 83, a regulating rod 9, a groove 10 and a limiting plate 11.
Detailed Description
For a better understanding of the technical content of the present invention, specific examples are provided below and the present invention is further described with reference to the accompanying drawings.
Example 1
Referring to fig. 1 to 4, the fixing device for the liquid level alarm provided by the invention comprises a fixing table 1, a driving component 3 and a plurality of fixing rods 4, wherein the fixing table 1 is provided with a threaded groove 5 for allowing a liquid level alarm upright rod to pass through and fix, the threaded groove 5 is convenient for the upright rod of the liquid level alarm to pass through, when the mounting table of the liquid level alarm is a threaded mounting table, the liquid level alarm is convenient to fix, the fixing table 1 is circumferentially provided with a plurality of adjusting seats 6 positioned outside the threaded groove 5, the fixing rods 4 are in sliding connection with the adjusting seats 6 through corresponding transverse adjusting components 8, the fixing rods 4 can be driven by the transverse adjusting components 8 to move through sliding simultaneously, then are matched with the liquid level alarms of different diameter flange mounting tables, the fixing rods 4 are used for fixing the liquid level alarm, the adjusting seats 6 are rotationally connected with adjusting rods 9, the driving component 3 drives the adjusting seats 6 to be slidably connected in the fixing table 1 through corresponding the adjusting rods 9, and the adjusting seats 6 can be made to slide downwards, and then the fixing rods 4 are connected with the liquid level alarm mounting table 1 through the flange mounting component 3, and the liquid level alarm can be conveniently mounted in the fixing table 1 through the fixing component 3.
When the liquid level alarm is used, the vertical rod of the liquid level alarm passes through the thread groove 5, when the mounting table of the liquid level alarm is a thread type mounting table, the thread mounting table of the liquid level alarm is in threaded fit with the thread groove 5, the effect of fixing the liquid level alarm is achieved, when the mounting table of the liquid level alarm is a flange type mounting table, the flange mounting table of the liquid level alarm is arranged on the fixing table 1 of the thread groove 5, the flange mounting table of the liquid level alarm is positioned between the fixing rods 4, the diameter of the flange mounting table of the liquid level alarm can be adjusted according to the diameter of the liquid level alarm, the fixing rods 4 can be adjusted to move towards one side of the thread groove 5 through the transverse adjusting component 8, the diameter of a circle surrounded by the fixing rods 4 is adjusted, the fixing rods 4 simultaneously correspond to the through holes of the flange mounting table of the liquid level alarm, the corresponding adjusting rods 9 are driven to rotate through the rotating driving component 3, and the adjusting rods 9 drive the adjusting seats 6 to move towards the lower ends of the fixing tables 1, and then the fixing rods 4 are driven to move downwards to be inserted into the through holes of the flange mounting table of the liquid level alarm.
In order to realize moving a plurality of dead levers 4 to thread groove 5 one side simultaneously, horizontal adjusting part 8 includes direction connecting seat 81 and spring 82, direction connecting seat 81 passes through spring 82 with adjust seat 6 sliding connection, the one end of dead lever 4 is fixed in on the direction connecting seat 81, the other end of dead lever 4 is pegged graft in the through-hole of liquid level alarm mount table, a plurality of horizontal adjusting part 8's direction connecting seat 81 passes through adjusting ring 83 and connects, wherein adjust seat 6 is equipped with cell body 10, direction connecting seat 81 sliding connection in cell body 10, the both ends of spring 82 respectively with cell body 10 with direction connecting seat 81 is connected, when needs to adjust the diameter that a plurality of dead levers 4 enclose into the circle, presses down adjusting ring 83, and under adjusting ring 83's effect, a plurality of direction connecting seats 81 move along cell body 10 to the one side that is close to thread groove 5, plays the effect of adjusting the removal of dead lever 4 simultaneously, and spring 82 can play the effect that makes direction connecting seat 81 reset, and wherein direction connecting seat 81 is equipped with and is used for limiting the limiting plate 11 of adjusting ring 83 position.
The fixing rod 4 comprises an L-shaped connecting rod 41 and an inserting rod 42, one end of the L-shaped connecting rod 41 is fixed on the guiding connecting seat 81, the free end of the L-shaped connecting rod 41 is connected with the inserting rod 42, the L-shaped connecting rod 41 can be conveniently matched with the position from edge to through hole in the liquid level alarm flange mounting table, and the inserting rod 42 is conveniently inserted into the through hole of the liquid level alarm flange mounting table.
Example 2
Referring to fig. 1 to 4, this embodiment differs from embodiment 1 in that: the driving assembly 3 comprises a main driving wheel 31 and a plurality of driven wheels 32, the main driving wheel 31 is provided with a through groove 33 which is in line with the axis of the thread groove 5, the driven wheels 32 are meshed with the main driving wheel 31, the adjusting rod 9 is in threaded connection with the driven wheels 32 correspondingly, the main driving wheel and the driven wheels 32 are respectively connected in the cavity 2 of the fixed table 1 through corresponding supporting rings 34 in a rotating way, the supporting rings 34 play a role of supporting the driving assembly 3, the driving assembly 3 is connected with a driving handle 38 which extends out of the fixed table 1, when the adjusting fixing rod 4 is aligned with the through hole of the flange mounting table of the liquid level alarm, the driving handle 38 is rotated to drive the main driving wheel 31 to rotate, the driven wheels 32 are meshed with the main driving wheel 31 to further drive the driven wheels 32 to rotate, and when the driven wheels 32 rotate, the adjusting rod 9 in threaded connection with the driven wheels 32 moves downwards, the adjusting rod 9 which moves downwards drives the adjusting seat 6 to slide downwards, and then the fixing rod 4 is inserted into the through hole of the flange mounting table of the liquid level alarm.
In order to reduce friction between the driving assembly 3 and the fixed table 1, a first annular groove 35 may be provided at one end of the supporting ring 34 facing the driving assembly 3, two sides of the main driving wheel 31 and the driven wheels 32 are respectively provided with a second annular groove 36, a plurality of balls 37 are embedded between the first annular groove 35 and the second annular grooves 36, and when the main column driving wheel and the driven wheels 32 rotate, the balls 37 play a role in reducing friction, so that the driving assembly 3 can rotate conveniently.
The central shaft of the driven wheel 32 is provided with a connecting groove 39, and the adjusting rod 9 is in threaded connection through the connecting groove 39, so that the adjusting rod 9 passes through the driven wheel 32 and is in threaded connection with the driven wheel 32.
Example 3
Referring to fig. 1 to 2, this embodiment differs from embodiment 1 in that: the mounting assembly 7 comprises a connecting plate 71 and a mounting plate 72, one end of the connecting plate 71 is connected with the fixed table 1, the free end of the connecting plate 71 is connected with the mounting plate 72, the mounting plate 72 is used for mounting the fixed table 1 in liquid of liquid level to be measured, and the fixed table 1 can be fixed in the water of the liquid level to be measured through the mounting assembly 7.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (5)
1. A fixing device of liquid level alarm, its characterized in that: comprises a fixed table, a driving component and a plurality of fixed rods, wherein the fixed table is provided with a threaded groove for a vertical rod of a liquid level alarm to pass through and fix, the fixed table is circumferentially provided with a plurality of adjusting seats positioned at the outer side of the threaded groove, the fixed rods are in sliding connection with the adjusting seats through corresponding transverse adjusting components, the fixed rods are used for fixing the liquid level alarm, the transverse adjusting components comprise a guide connecting seat and a spring, the guide connecting seat is in sliding connection with the adjusting seats through the spring, the adjusting seats are provided with groove bodies, the guide connecting seat is in sliding connection with the groove bodies, two ends of the spring are respectively connected with the groove bodies and the guide connecting seat, one end of each fixed rod is fixed on the guide connecting seat, the other end of each fixed rod is inserted into a through hole of the liquid level alarm mounting table, the guide connecting seats of the transverse adjusting assemblies are connected through adjusting rings, the adjusting seats are rotationally connected with adjusting rods, the driving assemblies drive the adjusting seats to be slidably connected in the fixed table through corresponding adjusting rods, the driving assemblies comprise a main driving wheel and a plurality of driven wheels, the main driving wheel is provided with a through groove which is coaxial with the axis of the thread groove, the driven wheels are meshed with the main driving wheel, the adjusting rods are in threaded connection with the driven wheels, the main driving wheel and the driven wheels are respectively rotationally connected in a cavity of the fixed table through corresponding supporting rings, a cavity is arranged in the fixed table, the driving assemblies are arranged in the cavity, one side of the fixed table is connected with a mounting assembly, the fixed rod comprises an L-shaped connecting rod and an inserting rod, one end of the L-shaped connecting rod is fixed on the guide connecting seat, the free end of the L-shaped connecting rod is connected with the inserted link.
2. A fixture for a fluid level alarm as defined in claim 1, wherein: one end of the supporting ring facing the driving assembly is provided with a first annular groove, two sides of the main driving wheel and the driven wheels are respectively provided with a second annular groove, and a plurality of balls are embedded between the first annular groove and the second annular grooves.
3. A fixture for a fluid level alarm as defined in claim 1, wherein: the driving assembly is connected with a driving handle extending out of the fixed table.
4. A fixture for a fluid level alarm as defined in claim 2, wherein: the driven wheel center shaft is provided with a connecting groove, and the adjusting rod is connected with the connecting groove through threads.
5. A fixture for a fluid level alarm as defined in claim 1, wherein: the installation component includes connecting plate and mounting panel, the one end of connecting plate with the fixed station is connected, the free end of connecting plate with the mounting panel is connected, the mounting panel is used for with the fixed station is installed in the liquid of awaiting measuring the liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210047407.4A CN114440073B (en) | 2022-01-17 | 2022-01-17 | Fixing device of liquid level alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210047407.4A CN114440073B (en) | 2022-01-17 | 2022-01-17 | Fixing device of liquid level alarm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114440073A CN114440073A (en) | 2022-05-06 |
| CN114440073B true CN114440073B (en) | 2024-02-23 |
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ID=81367308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210047407.4A Active CN114440073B (en) | 2022-01-17 | 2022-01-17 | Fixing device of liquid level alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114440073B (en) |
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| JP2003329073A (en) * | 2002-05-14 | 2003-11-19 | Tokai Rubber Ind Ltd | Cylinder type mount device with bracket |
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| CN211728095U (en) * | 2020-02-27 | 2020-10-23 | 重庆康桥工业有限公司 | Heavy-duty car punching welding axle housing flange plate finished product welding jig |
| CN112128548A (en) * | 2020-10-09 | 2020-12-25 | 珠海格力电器股份有限公司 | Arc-shaped base and household appliance |
| CN112483861A (en) * | 2020-11-30 | 2021-03-12 | 王玺 | Fire alarm device convenient to installation is dismantled |
| CN213236698U (en) * | 2020-09-01 | 2021-05-18 | 刘扬扬 | Gas concentration alarm with auxiliary mounting structure |
| CN213945694U (en) * | 2020-12-28 | 2021-08-13 | 无锡市永灵法兰锻造有限公司 | Heavy boring device for flange plate manufacturing |
| CN214815112U (en) * | 2021-06-25 | 2021-11-23 | 成都惠普利科技有限公司 | Auxiliary clamp for mechanical drilling |
| CN214923848U (en) * | 2021-08-03 | 2021-11-30 | 江阴宝弘机械法兰有限公司 | Clamping device is used in ring flange processing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7876546B2 (en) * | 2006-09-19 | 2011-01-25 | Kci Licensing Inc. | Component module for a reduced pressure treatment system |
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2022
- 2022-01-17 CN CN202210047407.4A patent/CN114440073B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003329073A (en) * | 2002-05-14 | 2003-11-19 | Tokai Rubber Ind Ltd | Cylinder type mount device with bracket |
| DE202016000066U1 (en) * | 2016-01-07 | 2017-04-10 | Wilfried Schertel | Quick Gripping Tripod |
| CN107283213A (en) * | 2017-08-07 | 2017-10-24 | 成都陵川特种工业有限责任公司 | With the air discharging manifold flange processing unit (plant) for removing iron filings function |
| CN207779498U (en) * | 2017-12-15 | 2018-08-28 | 重庆合琅智能科技有限公司 | Liquid level alarm applied to engineer operation |
| CN210293383U (en) * | 2019-10-18 | 2020-04-10 | 武汉恒盈泵业有限公司 | Liquid level alarm device convenient to installation |
| CN211728095U (en) * | 2020-02-27 | 2020-10-23 | 重庆康桥工业有限公司 | Heavy-duty car punching welding axle housing flange plate finished product welding jig |
| CN213236698U (en) * | 2020-09-01 | 2021-05-18 | 刘扬扬 | Gas concentration alarm with auxiliary mounting structure |
| CN112128548A (en) * | 2020-10-09 | 2020-12-25 | 珠海格力电器股份有限公司 | Arc-shaped base and household appliance |
| CN112483861A (en) * | 2020-11-30 | 2021-03-12 | 王玺 | Fire alarm device convenient to installation is dismantled |
| CN213945694U (en) * | 2020-12-28 | 2021-08-13 | 无锡市永灵法兰锻造有限公司 | Heavy boring device for flange plate manufacturing |
| CN214815112U (en) * | 2021-06-25 | 2021-11-23 | 成都惠普利科技有限公司 | Auxiliary clamp for mechanical drilling |
| CN214923848U (en) * | 2021-08-03 | 2021-11-30 | 江阴宝弘机械法兰有限公司 | Clamping device is used in ring flange processing |
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| Publication number | Publication date |
|---|---|
| CN114440073A (en) | 2022-05-06 |
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