CN209525127U - A kind of novel ground sampler drill - Google Patents
A kind of novel ground sampler drill Download PDFInfo
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- CN209525127U CN209525127U CN201920282161.2U CN201920282161U CN209525127U CN 209525127 U CN209525127 U CN 209525127U CN 201920282161 U CN201920282161 U CN 201920282161U CN 209525127 U CN209525127 U CN 209525127U
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Abstract
The utility model relates to a kind of samplers, are in particular a kind of novel ground sampler drills.Using pulley structure, reduce equipment endurance, clamping jaw can block sample bucket, and sample bucket pull-out ground is sampled, and sample bucket as underground hammers, is guaranteed the stabilization of ground sample structure ingredient by hammer structure.Positioned at hammer combination upside, connection is combined in hoisting frame combination with hammer for hoisting frame combination, and hammer combination combines connection with clamping positioned at combination upside, hammer combination is clamped.
Description
Technical field
The utility model relates to a kind of samplers, are in particular a kind of novel ground sampler drills.
Background technique
Ground samples the quality that pay much attention to soil sample.During drilling, taking soil, native structure is very easy to be chosen
It is dynamic, it is tested with the soil sample that structure has disturbed, necessarily obtains the conclusion of mistake, it will cause engineering accident or waste construction
Fund, so devising this novel ground sampler drill.
Summary of the invention
The utility model provides a kind of novel ground sampler drill, is to reduce equipment using pulley structure beneficial to benefit
Endurance, clamping jaw can block sample bucket, and sample bucket pull-out ground is sampled, and hammer structure is by sample bucket as underground is hammered into shape
Enter, guarantees the stabilization of ground sample structure ingredient.
In order to solve the above technical problems, the utility model relates to a kind of samplers, it is in particular a kind of novel rock
Native sampler drill, including hoisting frame combination, hammer combination, clamping combination reduce equipment endurance, clamping jaw using pulley structure
Sample bucket can be blocked, and sample bucket pull-out ground is sampled, sample bucket as underground hammers, is guaranteed ground by hammer structure
The stabilization of sample structure ingredient.
Hoisting frame combination is by vertical hydraulic bar, sliding block, mandril, pinion stand, gear, chain, anti-attrition wheel, wheel seat, bottom bar, double
Slideway, heightening frame composition, vertical hydraulic bar are located on the downside of sliding block, and vertical hydraulic bar is connect with sliding block, and mandril is located at inner side of slider,
Mandril is connect with sliding block, and pinion stand is located on the downside of mandril, and pinion stand connect with mandril, and gear is located at pinion stand downside, gear and
Pinion stand connection, chain are located on the downside of gear, and chain is connect with gear, and anti-attrition wheel is located on the outside of wheel seat, and anti-attrition wheel and wheel seat connect
It connects, bottom bar is located on the inside of wheel seat, and bottom bar is connect with wheel seat, and double slideways are located on the outside of sliding block, and double slideways are connect with sliding block, double slideways
On the outside of anti-attrition wheel, double slideways are connect with anti-attrition wheel, and heightening frame is located on the downside of double slideways, and heightening frame is connect with double slideways, are hung down
Straight hydraulic stem is connect with heightening frame, and chain is located on the upside of heightening frame, and chain is connect with heightening frame, and chain is located on the upside of bottom bar, chain
Item is connect with bottom bar, and sliding block is located on the upside of anti-attrition wheel；
Hammer combination by motor, limit slideway, damping spring, strut, pole pedestal, crankshaft base, crankshaft, crank, elevating lever,
Locator slide, flat side of a hammer composition, damping spring are located on the inside of limit slideway, and damping spring is connect with limit slideway, and strut, which is located at, to be subtracted
It shakes on the downside of spring, strut is connect with damping spring, and strut is located on the inside of limit slideway, and strut is connect with limit slideway, pole pedestal
On the downside of strut, pole pedestal is connect with strut, and crankshaft is located on the inside of crankshaft base, and crankshaft is connect with crankshaft base, and crankshaft is located at electricity
On the left of machine, crankshaft is connected to motor, and crank is located on the downside of crankshaft, and crank is connect with crankshaft, and elevating lever is located on the downside of crank, lifting
Bar is connect with crank, and locator slide is located on the downside of elevating lever, and locator slide is connect with elevating lever, and the flat side of a hammer is located under locator slide
Side, the flat side of a hammer are connect with locator slide；
Crank is made of top, middle part, lower part, and top is located on the upside of middle part, and top is connect with middle part, and middle part is located at lower part
Upside, middle part are connect with lower part；
It clamps combination to be made of free bearing, hydraulic stem, the two-sided rack, gear, clamping jaw, free bearing is located on the upside of hydraulic stem, free bearing
It is connect with hydraulic stem, hydraulic stem is located on the upside of the two-sided rack, and hydraulic stem is connect with the two-sided rack, and the two-sided rack is located in gear
Side, the two-sided rack are connect with gear, and gear is located on the upside of clamping jaw, and gear is connect with clamping jaw；
Hoisting frame combination is located at hammer combination upside, and connection is combined in hoisting frame combination with hammer, and hammer combination, which is located at, to be clamped
Combination upside, hammer combination combine connection with clamping.
As advanced optimizing for the technical program, bottom bar described in a kind of novel ground sampler drill of the utility model with
Hammer combination.
As advanced optimizing for the technical program, vertical liquid described in a kind of novel ground sampler drill of the utility model
Compression bar quantity is two.
As advanced optimizing for the technical program, clamping jaw number described in a kind of novel ground sampler drill of the utility model
Amount is two.
Using pulley structure, reduce equipment endurance, clamping jaw can block sample bucket, and sample bucket is pulled out ground and is carried out
Sample bucket as underground hammers, is guaranteed the stabilization of ground sample structure ingredient by sampling, hammer structure.
Detailed description of the invention
The utility model is described in more detail with specific implementation method with reference to the accompanying drawing.
Fig. 1 is a kind of structural schematic diagram of novel ground sampler drill of the utility model.
Fig. 2 is that a kind of hoisting frame of novel ground sampler drill of the utility model combines 1 structural schematic diagram.
Fig. 3 is that a kind of hoisting frame of novel ground sampler drill of the utility model combines 1 partial structural diagram.
Fig. 4 is that a kind of hoisting frame of novel ground sampler drill of the utility model combines 1 enlarged structure schematic diagram.
Fig. 5 is that a kind of hammer of novel ground sampler drill of the utility model combines 2 structural schematic diagrams.
Fig. 6 is a kind of crank 2-8 structural schematic diagram of novel ground sampler drill of the utility model.
Fig. 7 is that 3 structural schematic diagrams are combined in a kind of clamping of novel ground sampler drill of the utility model.
In figure: hoisting frame combination 1；Vertical hydraulic bar 1-1；Sliding block 1-2；Mandril 1-3；Pinion stand 1-4；Gear 1-5；Chain
1-6；Anti-attrition wheel 1-7；Wheel seat 1-8；Bottom bar 1-9；Double slideway 1-10；Heightening frame 1-11；Hammer combination 2；Motor 2-1；Limit is slided
Road 2-2；Damping spring 2-3；Strut 2-4；Pole pedestal 2-5；Crankshaft base 2-6；Crankshaft 2-7；Crank 2-8；Top 2-8-1；Middle part
2-8-2；Lower part 2-8-3；Elevating lever 2-9；Locator slide 2-10；Flat side of a hammer 2-11；Clamp combination 3；Free bearing 3-1；Hydraulic stem 3-2；
The two-sided rack 3-3；Gear 3-4；Clamping jaw 3-5.
Specific embodiment
Specific embodiment 1:
Illustrate present embodiment below with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, the utility model relates to one kind
In particular sampler is a kind of novel ground sampler drill, including hoisting frame combination 1, hammer combination 2, clamping combination
3, using pulley structure, reduce equipment endurance, clamping jaw can block sample bucket, and sample bucket pull-out ground is sampled,
Sample bucket as underground hammers, is guaranteed the stabilization of ground sample structure ingredient by hammer structure.
Hoisting frame combination 1 by vertical hydraulic bar 1-1, sliding block 1-2, mandril 1-3, pinion stand 1-4, gear 1-5, chain 1-6,
Anti-attrition wheel 1-7, wheel seat 1-8, bottom bar 1-9, double slideway 1-10, heightening frame 1-11 composition, vertical hydraulic bar 1-1 are located at sliding block 1-2
Downside, vertical hydraulic bar 1-1 are connect with sliding block 1-2, and mandril 1-3 is located on the inside of sliding block 1-2, and mandril 1-3 is connect with sliding block 1-2,
Pinion stand 1-4 is located on the downside of mandril 1-3, and pinion stand 1-4 is connect with mandril 1-3, and gear 1-5 is located on the downside of pinion stand 1-4, gear
1-5 is connect with pinion stand 1-4, and chain 1-6 is located on the downside of gear 1-5, and chain 1-6 is connect with gear 1-5, and anti-attrition wheel 1-7 is located at
On the outside of wheel seat 1-8, anti-attrition wheel 1-7 is connect with wheel seat 1-8, and bottom bar 1-9 is located on the inside of wheel seat 1-8, and bottom bar 1-9 and wheel seat 1-8 connect
It connects, double slideway 1-10 are located on the outside of sliding block 1-2, and double slideway 1-10 are connect with sliding block 1-2, and double slideway 1-10 are located at anti-attrition wheel 1-7
Outside, double slideway 1-10 are connect with anti-attrition wheel 1-7, and heightening frame 1-11 on the downside of double slideway 1-10, slide with double by heightening frame 1-11
Road 1-10 connection, vertical hydraulic bar 1-1 are connect with heightening frame 1-11, and chain 1-6 is located on the upside of heightening frame 1-11, chain 1-6 with
Heightening frame 1-11 connection, chain 1-6 are located on the upside of bottom bar 1-9, and chain 1-6 is connect with bottom bar 1-9, and sliding block 1-2 is located at anti-attrition wheel
On the upside of 1-7；
Hammer combination 2 is by motor 2-1, limit slideway 2-2, damping spring 2-3, strut 2-4, pole pedestal 2-5, crankshaft base 2-
6, crankshaft 2-7, crank 2-8, elevating lever 2-9, locator slide 2-10, flat side of a hammer 2-11 composition, damping spring 2-3 are located at limit slideway
On the inside of 2-2, damping spring 2-3 is connect with limit slideway 2-2, and strut 2-4 is located on the downside of damping spring 2-3, strut 2-4 and damping
Spring 2-3 connection, strut 2-4 are located on the inside of limit slideway 2-2, and strut 2-4 is connect with limit slideway 2-2, and pole pedestal 2-5 is located at
On the downside of strut 2-4, pole pedestal 2-5 is connect with strut 2-4, and crankshaft 2-7 is located on the inside of crankshaft base 2-6, crankshaft 2-7 and crankshaft base 2-
6 connections, crankshaft 2-7 are located on the left of motor 2-1, and crankshaft 2-7 is connect with motor 2-1, and crank 2-8 is located on the downside of crankshaft 2-7, crank
2-8 is connect with crankshaft 2-7, and elevating lever 2-9 is located on the downside of crank 2-8, and elevating lever 2-9 is connect with crank 2-8, locator slide 2-10
On the downside of elevating lever 2-9, locator slide 2-10 is connect with elevating lever 2-9, and flat side of a hammer 2-11 is located on the downside of locator slide 2-10, hammer
Face 2-11 is connect with locator slide 2-10, is moved downward in the middle part of crankshaft 2-7, and crankshaft 2-7 drives crank 2-8 to move downward, crank
2-8 drives elevating lever 2-9 to move downward, and elevating lever 2-9 is moved downward in locator slide 2-10, and elevating lever 2-9 continues downward
Movement, elevating lever 2-9 and flat side of a hammer 2-11 bump against, and flat side of a hammer 2-11 is moved downward at this time, and flat side of a hammer 2-11 drives pole pedestal 2-5 to transport downwards
Dynamic, pole pedestal 2-5 drives strut 2-4 to move downward, and strut 2-4 is moved downward under the position-limiting action of limit slideway 2-2, damping
Spring 2-3 is stretched；
Crank 2-8 is made of top 2-8-1, middle part 2-8-2, lower part 2-8-3, and top 2-8-1 is located on the 2-8-2 of middle part
Side, top 2-8-1 are connect with middle part 2-8-2, and middle part 2-8-2 is located on the upside of the 2-8-3 of lower part, and middle part 2-8-2 and lower part 2-8-3 connect
It connects, motor 2-1 rotation, motor 2-1 band dynamic crankshaft 2-7 rotates, and when crankshaft 2-7 rotating middle part is to top, top 2-8-1 is located at
Top, top 2-8-1 drive middle part 2-8-2 to be located at highest point, and middle part 2-8-2 drives lower part 2-8-3 to be located at highest point, lower part
2-8-3 drives elevating lever 2-9 to be located at top；
It clamps combination 3 to be made of free bearing 3-1, hydraulic stem 3-2, the two-sided rack 3-3, gear 3-4, clamping jaw 3-5, free bearing 3-1
On the upside of hydraulic stem 3-2, free bearing 3-1 is connect with hydraulic stem 3-2, and hydraulic stem 3-2 is located on the upside of the two-sided rack 3-3, hydraulic stem
3-2 is connect with the two-sided rack 3-3, and the two-sided rack 3-3 is located on the inside of gear 3-4, and the two-sided rack 3-3 is connect with gear 3-4, gear
3-4 is located on the upside of clamping jaw 3-5, and gear 3-4 is connect with clamping jaw 3-5, and hydraulic stem 3-2 is withdrawn, and hydraulic stem 3-2 drives the two-sided rack 3-
3 move upwards, and the two-sided rack 3-3 band moving gear 3-4 rotates inwardly, and gear 3-4 drives clamping jaw 3-5 to rotate inwardly, clamping jaw
3-5 clamps sample bucket；
Hoisting frame combination 1 is located at 2 upside of hammer combination, and 2 connections are combined in hoisting frame combination 1 with hammer, and hammer combination 2 is located at
3 upside of combination is clamped, 3 connections are combined in hammer combination 2 with clamping.
Specific embodiment 2:
Illustrate present embodiment below with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, present embodiment is to embodiment party
Formula one is described further, and the bottom bar 1-9 combines 2 connections with hammer.
Specific embodiment 3:
Illustrate present embodiment below with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, present embodiment is to embodiment party
Formula one is described further, and the vertical hydraulic bar 1-1 quantity is two.
Specific embodiment 4:
Illustrate present embodiment below with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, present embodiment is to embodiment party
Formula one is described further, and the clamping jaw 3-5 quantity is two.
The working principle of the utility model is: the working principle hammered is motor 2-1 rotation, motor 2-1 band dynamic crankshaft 2-7
Rotation, when crankshaft 2-7 rotating middle part arrives top, top 2-8-1 is located at top, and 2-8-2 is located in the middle part of top 2-8-1 drive
Highest point, middle part 2-8-2 drive lower part 2-8-3 to be located at highest point, and lower part 2-8-3 drives elevating lever 2-9 to be located at top, crankshaft
2-7 continues to rotate, and moves downward in the middle part of crankshaft 2-7, and crankshaft 2-7 drives crank 2-8 to move downward, and crank 2-8 drives elevating lever
2-9 is moved downward, and elevating lever 2-9 is moved downward in locator slide 2-10, and elevating lever 2-9 continues to move downward, elevating lever 2-9
Bump against with flat side of a hammer 2-11, flat side of a hammer 2-11 is moved downward at this time, and flat side of a hammer 2-11 drives pole pedestal 2-5 to move downward, pole pedestal 2-5 band
Dynamic strut 2-4 is moved downward, and strut 2-4 is moved downward under the position-limiting action of limit slideway 2-2, and damping spring 2-3 is stretched；
Vertical hydraulic bar 1-1 is withdrawn, and vertical hydraulic bar 1-1 band movable slider 1-2 is moved downward, and sliding block 1-2 drives mandril 1-3 to transport downwards
Dynamic, mandril 1-3 drives pinion stand 1-4 to move downward, and pinion stand 1-4 band moving gear 1-5 is moved downward, chain 1-6 and bottom bar 1-9
It connects segment length to increase, chain 1-6 connect segment length reduction with heightening frame 1-11, and bottom bar 1-9 is moved downward, and bottom bar 1-9 drives
Wheel seat 1-8 is moved downward, and wheel seat 1-8 drives anti-attrition wheel 1-7 to move downward, position-limiting action of the anti-attrition wheel 1-7 in double slideway 1-10
Under move downward.The working principle of sampling is hydraulic stem 3-2 withdrawal, and hydraulic stem 3-2 drives the two-sided rack 3-3 to move upwards, double
Face rack gear 3-3 band moving gear 3-4 rotates inwardly, and gear 3-4 drives clamping jaw 3-5 to rotate inwardly, and clamping jaw 3-5 presss from both sides sample bucket
Tightly, vertical hydraulic bar 1-1 stretches out, and vertical hydraulic bar 1-1 band movable slider 1-2 is moved upwards, and sliding block 1-2 drives mandril 1-3 upward
Movement, mandril 1-3 drive pinion stand 1-4 to move upwards, and pinion stand 1-4 band moving gear 1-5 is moved upwards, chain 1-6 and bottom bar
1-9 connection segment length reduces, and chain 1-6 connect segment length increase with heightening frame 1-11, and bottom bar 1-9 is moved upwards, bottom bar 1-9 band
Driving wheel seat 1-8 is moved upwards, and wheel seat 1-8 drives anti-attrition wheel 1-7 to move upwards, and limit of the anti-attrition wheel 1-7 in double slideway 1-10 is made
It is moved upwards under, bottom bar 1-9 drives clamping combination 3 to move upwards.
Certainly, above description is not limitation of the utility model, and the utility model is also not limited to the example above, this skill
The variations, modifications, additions or substitutions that the those of ordinary skill in art field is made in the essential scope of the utility model, also belong to
In the protection scope of the utility model.
Claims (4)
1. a kind of novel ground sampler drill, including hoisting frame combination (1), hammer combination (2), clamping combination (3) composition,
Be characterized in that: hoisting frame combines (1) by vertical hydraulic bar (1-1), sliding block (1-2), mandril (1-3), pinion stand (1-4), gear
(1-5), chain (1-6), anti-attrition wheel (1-7), wheel seat (1-8), bottom bar (1-9), double slideways (1-10), heightening frame (1-11) group
At vertical hydraulic bar (1-1) is located on the downside of sliding block (1-2), and vertical hydraulic bar (1-1) is connect with sliding block (1-2), mandril (1-3)
On the inside of sliding block (1-2), mandril (1-3) is connect with sliding block (1-2), and pinion stand (1-4) is located on the downside of mandril (1-3), gear
Seat (1-4) is connect with mandril (1-3), and gear (1-5) is located on the downside of pinion stand (1-4), and gear (1-5) and pinion stand (1-4) are even
It connects, chain (1-6) is located on the downside of gear (1-5), and chain (1-6) is connect with gear (1-5), and anti-attrition wheel (1-7) is located at wheel seat (1-
8) outside, anti-attrition wheel (1-7) are connect with wheel seat (1-8), and bottom bar (1-9) is located on the inside of wheel seat (1-8), bottom bar (1-9) and wheel seat
(1-8) connection, double slideways (1-10) are located on the outside of sliding block (1-2), and double slideways (1-10) connect with sliding block (1-2), double slideway (1-
10) it is located on the outside of anti-attrition wheel (1-7), double slideways (1-10) connect with anti-attrition wheel (1-7), and heightening frame (1-11) is located at double slideways
On the downside of (1-10), heightening frame (1-11) is connect with double slideways (1-10), and vertical hydraulic bar (1-1) is connect with heightening frame (1-11),
Chain (1-6) is located on the upside of heightening frame (1-11), and chain (1-6) is connect with heightening frame (1-11), and chain (1-6) is located at bottom bar
On the upside of (1-9), chain (1-6) is connect with bottom bar (1-9), and sliding block (1-2) is located on the upside of anti-attrition wheel (1-7)；
Hammer combine (2) by motor (2-1), limit slideway (2-2), damping spring (2-3), strut (2-4), pole pedestal (2-5),
Crankshaft base (2-6), crankshaft (2-7), crank (2-8), elevating lever (2-9), locator slide (2-10), the flat side of a hammer (2-11) composition, subtract
It shakes spring (2-3) to be located on the inside of limit slideway (2-2), damping spring (2-3) is connect with limit slideway (2-2), the position strut (2-4)
On the downside of damping spring (2-3), strut (2-4) is connect with damping spring (2-3), and strut (2-4) is located in limit slideway (2-2)
Side, strut (2-4) are connect with limit slideway (2-2), and pole pedestal (2-5) is located on the downside of strut (2-4), pole pedestal (2-5) and branch
Bar (2-4) connection, crankshaft (2-7) are located on the inside of crankshaft base (2-6), and crankshaft (2-7) is connect with crankshaft base (2-6), crankshaft (2-7)
On the left of motor (2-1), crankshaft (2-7) is connect with motor (2-1), and crank (2-8) is located on the downside of crankshaft (2-7), crank (2-
8) it is connect with crankshaft (2-7), elevating lever (2-9) is located on the downside of crank (2-8), and elevating lever (2-9) is connect with crank (2-8), fixed
Position slideway (2-10) is located on the downside of elevating lever (2-9), and locator slide (2-10) is connect with elevating lever (2-9), the position the flat side of a hammer (2-11)
On the downside of locator slide (2-10), the flat side of a hammer (2-11) is connect with locator slide (2-10)；
Crank (2-8) is made of top (2-8-1), middle part (2-8-2), lower part (2-8-3), and top (2-8-1) is located at middle part (2-
8-2) upside, top (2-8-1) is connect with middle part (2-8-2), and middle part (2-8-2) is located on the upside of lower part (2-8-3), middle part (2-
8-2) it is connect with lower part (2-8-3)；
Combination (3) is clamped to be made of free bearing (3-1), hydraulic stem (3-2), the two-sided rack (3-3), gear (3-4), clamping jaw (3-5),
Free bearing (3-1) is located on the upside of hydraulic stem (3-2), and free bearing (3-1) is connect with hydraulic stem (3-2), and hydraulic stem (3-2) is located at double cog
On the upside of item (3-3), hydraulic stem (3-2) is connect with the two-sided rack (3-3), and the two-sided rack (3-3) is located on the inside of gear (3-4), double
Face rack gear (3-3) is connect with gear (3-4), and gear (3-4) is located on the upside of clamping jaw (3-5), and gear (3-4) and clamping jaw (3-5) are even
It connects；
Hoisting frame combination (1) is located on the upside of hammer combination (2), and (2) connection, hammer combination are combined in hoisting frame combination (1) with hammer
(2) positioned at clamping on the upside of combination (3), hammer combines (2) and combines (3) connection with clamping.
2. the novel ground sampler drill of one kind according to claim 1, it is characterised in that: the bottom bar (1-9) and hammer
Sub-portfolio (2) connection.
3. the novel ground sampler drill of one kind according to claim 1, it is characterised in that: the vertical hydraulic bar (1-
1) quantity is two.
4. the novel ground sampler drill of one kind according to claim 1, it is characterised in that: clamping jaw (3-5) quantity
It is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920282161.2U CN209525127U (en) | 2019-03-06 | 2019-03-06 | A kind of novel ground sampler drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920282161.2U CN209525127U (en) | 2019-03-06 | 2019-03-06 | A kind of novel ground sampler drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209525127U true CN209525127U (en) | 2019-10-22 |
Family
ID=68231744
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|---|---|---|---|
| CN201920282161.2U Expired - Fee Related CN209525127U (en) | 2019-03-06 | 2019-03-06 | A kind of novel ground sampler drill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557597A (en) * | 2020-12-02 | 2021-03-26 | 安徽砺剑防务科技有限公司 | Portable toxic gas detection device |
-
2019
- 2019-03-06 CN CN201920282161.2U patent/CN209525127U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557597A (en) * | 2020-12-02 | 2021-03-26 | 安徽砺剑防务科技有限公司 | Portable toxic gas detection device |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191022 |