CN110185075A - A kind of diaphram wall slurry sampler - Google Patents
A kind of diaphram wall slurry sampler Download PDFInfo
- Publication number
- CN110185075A CN110185075A CN201910594353.1A CN201910594353A CN110185075A CN 110185075 A CN110185075 A CN 110185075A CN 201910594353 A CN201910594353 A CN 201910594353A CN 110185075 A CN110185075 A CN 110185075A
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- bung
- staving
- fixed
- movable
- bucket
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- 239000002002 slurry Substances 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000005070 sampling Methods 0.000 abstract description 10
- 239000000523 sample Substances 0.000 description 43
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of diaphram wall slurry samplers, including sample bucket and counter weight device, sample bucket includes staving, bung and bucket bottom, the two sides of staving are provided with hoisting mechanism, bung includes fixed bung and movable bung, fixed bung and movable bung are semicircle, fixed bung is fixed on a upper lateral part of staving, another upper lateral part of staving is arranged in movable bung and it is hinged on fixing barrel and covers, the top of movable bung is provided with bung opening tool, counter weight device is laid in the lower section at barrel bottom and it is fastenedly connected by flexible connector and movable bung, perforation is offered on bucket bottom and movable bung.Structure of the invention design is reasonable, it is convenient to operate, the counter weight device being connect by the lower part setting at bucket bottom with movable bung, it can be improved the leakproofness of sample bucket, and then improve the measuring accuracy of mud sample, it is provided with hoisting mechanism by the two sides in staving simultaneously, is able to satisfy the sampling of the mud sample at different depth, it is applied widely.
Description
Technical field
The invention belongs to underground continuous wall construction technique fields, and in particular to a kind of diaphram wall slurry sampler.
Background technique
Diaphram wall is a kind of deep foundation pit support means, and specific method is along pattern foundation pit supporting structure range, using chute forming machine
Tool is excavated in the case where mud off, hangs steel reinforcement cage after the completion of excavation in slot, is then protected with tremie method to mud
The diaphram wall of wall is irrigated concrete construction.
Quality of mud fluid be prevent collapse hole and necking down, control sediment thickness, steel reinforcement cage are smoothly transferred, wall quality etc.
Important measures, job specfication have respective specified for indexs such as the specific gravity of mud, viscosity, sand factor and pH values, and construction is different
The performance indicator control of depth mud is particularly significant.
The relative density of mud in device to hole, sand factor, thick is needed before the concrete perfusion construction for carrying out diaphram wall
Degree is sampled detection, meets design and code requirement could concrete perfusion.General sampling mode is by sampler pair
Mud is detected in slot, and existing sampler is difficult to completely obtain the mud sample at different depth, the mud sample of acquirement
Parameter often differs larger with actual mud parameter, cannot really react actual conditions, therefore provides one kind and can satisfy
The slurry sampler of actual demand is very necessary.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that it is continuous to provide a kind of underground
Wall slurry sampler, reasonable in design, it is convenient to operate, the counterweight being connect by the lower part setting at bucket bottom with movable bung
Device can be improved the leakproofness of sample bucket, and then improve the measuring accuracy of mud sample, while equal by the two sides in staving
It is provided with hoisting mechanism, is able to satisfy the sampling of the mud sample at different depth, it is applied widely.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of diaphram wall slurry sampler,
Be characterized in that: including sample bucket and counter weight device, the sample bucket includes cylindrical staving, the bung that staving top is arranged in
With the bucket bottom that staving lower part is arranged in, the two sides of the staving are provided with hoisting mechanism, two symmetrical cloth of hoisting mechanism
The two sides of staving are located at, the bung includes mutually matched fixed bung and movable bung, and the bucket bottom is round and it is solid
It is scheduled on staving lower part, the fixed bung and movable bung are semicircle, and the fixed bung is fixed on the side of staving
Portion, another upper lateral part of staving is arranged in the activity bung and it is hinged on fixing barrel and covers, the top of the activity bung
It is provided with the bung opening tool for being used to open movable bung, the counter weight device is laid in the lower section at barrel bottom and it is connected by elasticity
Fitting is fastenedly connected with movable bung, offers the perforation passed through for flexible connector on the bucket bottom and movable bung.
Above-mentioned a kind of diaphram wall slurry sampler, it is characterised in that: the hoisting mechanism includes being fixed on staving
Lifting lug on lateral wall and the lifting rope for being connected to lifting lug upper end, the lifting lug be with the mutually matched arc bent plate of staving,
The lower end of the lifting lug is welded on staving lateral wall, and the upper end of the lifting lug extend out to the top of staving.
Above-mentioned a kind of diaphram wall slurry sampler, it is characterised in that: the upper end of the lifting lug is offered for lifting
The fixed binding hole of rope.
Above-mentioned a kind of diaphram wall slurry sampler, it is characterised in that: be provided in the staving to elastic connection
The cylindrical guide cylinder that part is oriented to, the guide cylinder are in coaxial cloth along the axial laying and the perforation at itself and bucket bottom of staving
If.
Above-mentioned a kind of diaphram wall slurry sampler, it is characterised in that: the guide cylinder is close to the inner sidewall of staving
It is arranged and it is fixedly connected with staving.
Above-mentioned a kind of diaphram wall slurry sampler, it is characterised in that: the activity bung passes through two hinge hinges
It connects and is covered in fixing barrel.
Above-mentioned a kind of diaphram wall slurry sampler, it is characterised in that: the flexible connector and bung opening tool
It is rope, is provided at the punch position on the activity bung and consolidates for the first of flexible connector and the binding of bung opening tool
Determine ear.
A kind of above-mentioned diaphram wall slurry sampler, it is characterised in that: first fixed ear be triangular plate and
Its bottom is welded on movable bung, and the bottom of first fixed ear is offered to be lacked with what the perforation on movable bung connected
Mouthful, the lower end of the bung opening tool and the upper end of flexible connector are bound in the first fixed ear by notch.
Above-mentioned a kind of diaphram wall slurry sampler, it is characterised in that: be arranged between the activity bung and staving
Have a rubber strip, the rubber strip be the semicircle rubber strip matched with movable bung and its be fixedly mounted under movable bung
Portion.
Above-mentioned a kind of diaphram wall slurry sampler, it is characterised in that: the counter weight device is steel cylinder, institute
The top for stating counter weight device is provided with the second fixed ear connected for flexible connector lower end, offers in second fixed ear
For the connecting hole that flexible connector is fixed.
Compared with the prior art, the present invention has the following advantages:
1, the present invention is provided with hoisting mechanism by the two sides in staving, and in the setting of the lower part of sample bucket with refitting
It sets, sample bucket can be enable to be transferred under the Gravitative Loads of counter weight device, while passing through the decentralization of control hoisting mechanism
Length realizes the decentralization height of counter weight device, and then meets the sampling of the mud sample at different depth, applied widely.
2, the present invention can make to match by offering the perforation passed through for flexible connector on bucket bottom and movable bung
Refitting set it is direct be attached with movable bung, and then can be close by movable bung and staving progress by the self weight of counter weight device
Envelope, sealing is easy and sealing effect is good.
3, movable bung is hinged on fixing barrel and covered by will fix bung and staving is fixed as one by the present invention, knot
Structure is simple, convenient for the closing of sample bucket, can effectively improve sampling efficiency, reduce sample time.
In conclusion structure of the invention design is rationally, it is convenient to operate, and is connected by the lower part setting at bucket bottom with movable bung
The counter weight device connect can be improved the leakproofness of sample bucket, and then improve the measuring accuracy of mud sample, while by staving
Two sides be provided with hoisting mechanism, be able to satisfy the sampling of the mud sample at different depth, it is applied widely.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of bung of the present invention.
Fig. 3 is the structural schematic diagram at bucket bottom of the present invention.
Fig. 4 is the structural schematic diagram of lifting lug of the present invention.
Fig. 5 is the structural schematic diagram of the first fixed ear of the invention.
Fig. 6 is the structural schematic diagram of the second fixed ear of the invention.
Description of symbols:
1-staving；2-bucket bottoms；3-1-fixation bung；
3-2-activity bung；4-counter weight devices；5-flexible connectors；
6-perforation；7-lifting lugs；7-1-binding hole；
8-lifting ropes；9-guide cylinders；10-hinges；
11-the first fixed ear；12-the second fixed ear；13-bung opening tools；
14-rubber strips；15-notches；16-connecting holes.
Specific embodiment
As shown in Figure 1, Figure 2 and Figure 3, the present invention includes sample bucket and counter weight device 4, and the sample bucket includes cylindrical
Staving 1, the bung that 1 top of staving is arranged in and the bucket bottom 2 that 1 lower part of staving is arranged in, the two sides of the staving 1, which are provided with, to be mentioned
Mechanism is risen, two hoisting mechanisms are symmetrically laid in the two sides of staving 1, and the bung includes mutually matched fixed bung 3-
1 and movable bung 3-2, the bucket bottom 2 is round and it is fixed on 1 lower part of staving, the fixed bung 3-1 and movable bung 3-
2 be semicircle, and the fixed bung 3-1 is fixed on a upper lateral part of staving 1, and staving 1 is arranged in the activity bung 3-2
Another upper lateral part and its be hinged on fixed bung 3-1, the top of the activity bung 3-2, which is provided with, is used to open movable bung
The bung opening tool 13 of 3-2, the counter weight device 4 is laid in the lower section at barrel bottom 2 and it passes through flexible connector 5 and movable bung
3-2 is fastenedly connected, and offers the perforation 6 passed through for flexible connector 5 on the bucket bottom 2 and movable bung 3-2.
In actual use, the staving 1 is cylindrical steel cylinder, and the bucket bottom 2 is circular steel plate, the fixed bung 3-
1 and activity bung 3-2 is semi-circular sheet steel, and the lower end that the bucket bottom 2 is welded on staving 1 blocks the lower end of staving 1,
The fixed bung 3-1 is welded on the upper end of staving 1, by being provided with hoisting mechanism in the two sides of staving 1, and in sample bucket
Lower part counter weight device 4 is set, sample bucket can be made to be transferred under the action of counter weight device 4 and sample bucket are self-possessed, simultaneously
By controlling the decentralization depth of the decentralization length realization sample bucket of hoisting mechanism, and then meet mud sample at different depth
Sampling, it is applied widely.
It should be noted that the perforation 6 is circular through hole, by offering confession on bucket bottom 2 and movable bung 3-2
The perforation 6 that flexible connector 5 passes through can be such that counter weight device 4 is directly attached with movable bung 3-2, and then can pass through
Movable bung 3-2 is sealed by the self weight of counter weight device 4 with staving 1, and sealing is easy and sealing effect is good.
In the present embodiment, the fixed bung 3-1 is equal with the radius of movable bung 3-2, the fixed bung 3-1 and bucket
Bottom 2 is parallel to each other, and when sample bucket is in closed state, the fixed bung 3-1 and activity bung 3-2 are stitched together to be formed
One round bung blocks the upper end of staving 1.
In actual use, it is fixed as one by the way that bung 3-1 will be fixed with staving 1, movable bung 3-2 is hinged on fixation
On bung 3-1, structure is simple, convenient for the closing of sample bucket, can effectively improve sampling efficiency, reduce sample time.
It should be noted that being controlled by the way that bung opening tool 13 is arranged on the top of movable bung 3-2 convenient for staff
The sampling of mud sample is completed in the opening and closing of sample bucket.
In the present embodiment, the staving 1, bucket bottom 2, fixed bung 3-1 and activity bung 3-2 by steel processing and fabricating and
At the staving 1, bucket bottom 2 and fixed bung 3-1 processing and fabricating are integrated.
In the present embodiment, the hoisting mechanism includes the lifting lug 7 being fixed on 1 lateral wall of staving and is connected on lifting lug 7
The lifting rope 8 at end, the lifting lug 7 be with the mutually matched arc bent plate of staving 1, the lower end of the lifting lug 7 is welded on staving 1
On lateral wall, the upper end of the lifting lug 7 extend out to the top of staving 1.
In actual use, it is provided with length scale line on the lifting rope 8, the decentralization that can accurately control sample bucket is deep
Degree, and then improve the measuring accuracy of mud sample.
It should be noted that the lifting lug 7 is curved plate, two lifting lugs 7 are symmetrically laid in the two sides of staving 1.
As shown in figure 4, the upper end of the lifting lug 7 offers the binding hole 7-1 fixed for lifting rope 8 in the present embodiment.
In actual use, binding is in 7 upper end of lifting lug, the lifting after the lower end of the lifting rope 8 passes through binding hole 7-1
The upper end of rope 8 is connected on suspender, by suspender pull or lower section lift rope 8, and then realize feeding bucket pull-up and under
It puts.
It should be noted that the binding hole 7-1 is the circular through hole opened up along the thickness direction of lifting lug 7.
In the present embodiment, the cylindrical guide cylinder 9 being oriented to flexible connector 5 is provided in the staving 1, it is described
Guide cylinder 9 is laid along the axial laying and the perforation 6 at itself and bucket bottom 2 of staving 1 in coaxial.
In actual use, the guide cylinder 9 is steel cylinder, by the setting guide cylinder 9 in staving 1, can make elastic connection
Part 5 is fastenedly connected after from top to bottom passing through guide cylinder 9 with counter weight device 4, is guaranteed the stability of counter weight device 4, is prevented sample bucket
During pull-up or decentralization, counter weight device 4 drives sample bucket to shake, and then influences the extraction of mud sample.
In the present embodiment, when sample bucket is in closed state, perforation 6 on the bucket bottom 2 and movable bung 3-2 with
Guide cylinder 9 is laid in coaxial, and flexible connector 5 can be made to lay under the action of counter weight device 4 in vertical.
In the present embodiment, the guide cylinder 9 is close to the inner sidewall setting of staving 1 and it is fixedly connected with staving 1.
In actual use, the guide cylinder 9 is the guiding on cylindrical tube and its inner sidewall for being welded on staving 1
Aperture of the internal diameter of cylinder 9 not less than perforation 6.
In the present embodiment, the activity bung 3-2 is hinged on fixed bung 3-1 by two hinges 10.
In actual use, the straightway of the movable bung 3-2 and the straightway of fixed bung 3-1 pass through two hinges 10
It is hinged fixed, it is easily installed and dismantles.
In the present embodiment, the flexible connector 5 and bung opening tool 13 are rope, on the activity bung 3-2
It perforates the first fixed ear 11 being provided at 6 positions for flexible connector 5 and the binding of bung opening tool 13.
In actual use, the upper end of the flexible connector 5 binds the flexible connector 5 in the first fixed ear 11
Lower end sequentially passed through from the bottom to top after the perforation 6 on perforation 6, guide cylinder 9 and bucket bottom 2 on movable bung 3-2 and with refitting
4 are set to be fastenedly connected.
It should be noted that first fixed ear 11 be steel plate and its be welded on movable bung 3-2, described first is solid
Determine the surface that ear 11 is located at perforation 6 on movable bung 3-2.
As shown in figure 5, first fixed ear 11 is triangular plate and its bottom is welded on movable bung in the present embodiment
On 3-2, the bottom of first fixed ear 11 offers the notch 15 to connect with the perforation 6 on movable bung 3-2, the bucket
The lower end of lid opening tool 13 and the upper end of flexible connector 5 pass through the binding of notch 15 in the first fixed ear 11.
In actual use, first fixed ear 11 is triangular steel plate, the upper end of the bung opening tool 13 and suspender
It is fastenedly connected, the lower end of the bung opening tool 13 is bound in the first fixed ear 11 by notch 15.
It should be noted that the notch 15 is arch notch, the upper end of the flexible connector 5 passes through institute from the bottom to top
On the top of the first fixed ear 11, the lower end of the bung opening tool 13 from top to bottom passes through the notch for binding after stating notch 15
Binding is on the top of the first fixed ear 11 after 15.
In the present embodiment, be provided with rubber strip 14 between activity bung 3-2 and the staving 1, the rubber strip 14 be with
Semicircle rubber strip that movable bung 3-2 is matched and its lower part for being fixedly mounted on movable bung 3-2.
In actual use, the rubber strip 14 is located at the lower part of movable bung 3-2 arc section, by movable bung 3-2
It is provided with rubber strip 14 between staving 1, sample bucket can be sealed, it is ensured that mud will not be into sample bucket decentralization process
Enter in sample bucket, guarantees the purity of mud sample.
As shown in fig. 6, the counter weight device 4 is steel cylinder, and the top of the counter weight device 4 is set in the present embodiment
It is equipped with the second fixed ear 12 for the connection of 5 lower end of flexible connector, is offered in second fixed ear 12 for flexible connector 5
Fixed connecting hole 16.
In actual use, second fixed ear 12 be triangular steel plate and its upper end for being welded on counter weight device 4, it is described
The middle part of second fixed ear 12 offers circular connecting hole 16, and the lower end of the flexible connector 5 passes through the connecting hole 16
After bind on 12 top of the second fixed ear.
The present invention in actual use, is transferred sample bucket by controlling two lifting ropes 8, according to lifting rope 8
On scale determine the decentralization depth of sample bucket；Activity bung 3-2 connects in 5 lower part of flexible connector when being sampled the decentralization of bucket
It is closed under the gravity of the counter weight device 4 connect, the rubber strip 14 under movable bung 3-2 seals sample bucket, it is ensured that when decentralization
Mud will not enter sample bucket；Bucket to be sampled is transferred to depth selection, and pulling up bung opening tool 13 by suspender makes to live
Dynamic bung 3-2 is opened, and mud can enter in sample bucket, after waiting about 5s~10s, unclamps bung opening tool 13, movable bung
3-2 can close sample bucket under the action of counter weight device 4, can be by sample bucket followed by two lifting ropes 8
It extracts, completes the sampling of mud.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (10)
1. a kind of diaphram wall slurry sampler, it is characterised in that: including sample bucket and counter weight device (4), the sample bucket
It is described including cylindrical staving (1), setting in the bung on staving (1) top and setting at the bucket bottom (2) of staving (1) lower part
The two sides of staving (1) are provided with hoisting mechanism, and two hoisting mechanisms are symmetrically laid in the two sides of staving (1), the bucket
Lid includes mutually matched fixed bung (3-1) and movable bung (3-2), and the bucket bottom (2) is round and it is fixed on staving
(1) lower part, the fixed bung (3-1) and movable bung (3-2) are semicircle, and the fixed bung (3-1) is fixed on bucket
One upper lateral part of body (1), it is described activity bung (3-2) be arranged staving (1) another upper lateral part and its be hinged on fixed bung
On (3-1), the top of the activity bung (3-2) is provided with the bung opening tool (13) for being used to open movable bung (3-2), institute
State counter weight device (4) be laid in a barrel bottom (2) lower section and its by flexible connector (5) with activity bung (3-2) be fastenedly connected,
The perforation (6) passed through for flexible connector (5) is offered on the bucket bottom (2) and movable bung (3-2).
2. a kind of diaphram wall slurry sampler described in accordance with the claim 1, it is characterised in that: the hoisting mechanism includes
The lifting lug (7) that is fixed on staving (1) lateral wall and the lifting rope (8) for being connected to lifting lug (7) upper end, the lifting lug (7) are
With the mutually matched arc bent plate of staving (1), the lower end of the lifting lug (7) is welded on staving (1) lateral wall, the lifting lug
(7) upper end extend out to the top of staving (1).
3. a kind of diaphram wall slurry sampler according to claim 2, it is characterised in that: the lifting lug (7) it is upper
End offers the binding hole (7-1) fixed for lifting rope (8).
4. a kind of diaphram wall slurry sampler described in accordance with the claim 1, it is characterised in that: set in the staving (1)
It is equipped with the cylindrical guide cylinder (9) being oriented to flexible connector (5), the guide cylinder (9) is laid along the axial direction of staving (1)
And the perforation (6) of itself and bucket bottom (2) is laid in coaxial.
5. a kind of diaphram wall slurry sampler according to claim 2, it is characterised in that: the guide cylinder (9) is tight
The inner sidewall of patch staving (1) is arranged and it is fixedly connected with staving (1).
6. a kind of diaphram wall slurry sampler described in accordance with the claim 1, it is characterised in that: the activity bung (3-
2) it is hinged on fixed bung (3-1) by two hinges (10).
7. a kind of diaphram wall slurry sampler described in accordance with the claim 1, it is characterised in that: the flexible connector
(5) and bung opening tool (13) is rope, is provided with for elasticity even at perforation (6) position on the activity bung (3-2)
The first fixed ear (11) of fitting (5) and bung opening tool (13) binding.
8. a kind of diaphram wall slurry sampler according to claim 7, it is characterised in that: first fixed ear
(11) for triangular plate and its bottom is welded on movable bung (3-2), the bottom of first fixed ear (11) offer with
The notch (15) that perforation (6) on movable bung (3-2) connects, the lower end of the bung opening tool (13) and flexible connector
(5) upper end passes through notch (15) binding on the first fixed ear (11).
9. a kind of diaphram wall slurry sampler described in accordance with the claim 1, it is characterised in that: the activity bung (3-
2) it is provided between staving (1) rubber strip (14), the rubber strip (14) is the semicircle matched with movable bung (3-2)
Rubber strip and its lower part for being fixedly mounted on movable bung (3-2).
10. a kind of diaphram wall slurry sampler described in accordance with the claim 1, it is characterised in that: the counter weight device (4)
For steel cylinder, the top of the counter weight device (4) is provided with the second fixed ear for the connection of flexible connector (5) lower end
(12), the connecting hole (16) fixed for flexible connector (5) is offered on second fixed ear (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910594353.1A CN110185075B (en) | 2019-07-03 | 2019-07-03 | Underground diaphragm wall mud sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910594353.1A CN110185075B (en) | 2019-07-03 | 2019-07-03 | Underground diaphragm wall mud sampler |
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| Publication Number | Publication Date |
|---|---|
| CN110185075A true CN110185075A (en) | 2019-08-30 |
| CN110185075B CN110185075B (en) | 2024-03-26 |
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| CN201910594353.1A Active CN110185075B (en) | 2019-07-03 | 2019-07-03 | Underground diaphragm wall mud sampler |
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