CN217150146U - Based on municipal road engineering subgrade filling quality management and control equipment board - Google Patents
Based on municipal road engineering subgrade filling quality management and control equipment board Download PDFInfo
- Publication number
- CN217150146U CN217150146U CN202221030026.7U CN202221030026U CN217150146U CN 217150146 U CN217150146 U CN 217150146U CN 202221030026 U CN202221030026 U CN 202221030026U CN 217150146 U CN217150146 U CN 217150146U
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- lifting
- drilling
- vertical arm
- supporting vertical
- motor
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- 238000005553 drilling Methods 0.000 claims abstract description 60
- 238000004140 cleaning Methods 0.000 claims abstract description 35
- 230000010405 clearance mechanism Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000003908 quality control method Methods 0.000 claims 5
- 238000000034 method Methods 0.000 claims 1
- 238000005070 sampling Methods 0.000 abstract description 6
- 239000002689 soil Substances 0.000 abstract description 5
- 230000003028 elevating effect Effects 0.000 description 10
- 238000010276 construction Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model provides a thereby it influences the problem of testing result to have soil sample that auger stem took out to attach on the drilling rod and bring into next sampling point based on municipal road engineering road bed filling quality management and control equipment board belongs to road engineering equipment technical field to thereby solve current municipal road engineering road bed filling quality management and control equipment, include: the drilling machine comprises a chassis, a supporting vertical arm, a lifting motor, a drilling lifting mechanism and a drill rod cleaning mechanism; the supporting vertical arm is fixedly arranged in front of the upper side face of the chassis, and a vertical sliding groove is formed in the front side of the supporting vertical arm; the lifting motor is a stepping motor and is fixedly arranged at the rear part of the upper end of the supporting vertical arm; the sample storage box is fixedly arranged at the rear part of the upper side surface of the chassis; the drilling lifting mechanism is arranged at the front part of the supporting vertical arm; the drill rod cleaning mechanism is arranged at the front part of the supporting vertical arm. The utility model discloses a drilling rod clearance mechanism clears up auger stem to the soil sample that prevents to take out brings into next sampling point and influences the testing result.
Description
Technical Field
The utility model belongs to the technical field of road engineering equipment, more specifically say, in particular to based on municipal road engineering road bed filling quality management and control equipment board.
Background
The municipal road engineering is one of the important engineering of the municipal engineering, has important significance to the traffic development of cities, needs to fill the roadbed in the construction of the municipal road engineering, and needs to manage and control the construction quality in the filling construction, so that the filled road surface is often needed to be sampled and the components of the road surface are tested.
For example, application numbers are: CN 202022522369.2's utility model discloses a municipal road engineering road bed filling quality management and control equipment, including the mounting panel, the right side fixed welding at mounting panel top has the gag lever post, and the top fixed welding of gag lever post right side lateral wall has the second to connect the diaphragm, and the equal fixed mounting in both sides has first cylinder about the diaphragm bottom is connected to the second, and the output fixed mounting of two sets of first cylinder bottoms has first connection diaphragm, and the gag lever post outside cover is equipped with the installation cover with first connection diaphragm left side lateral wall welding integration, and the intermediate position department fixed mounting at first connection diaphragm top has the motor. This quality management and control equipment is filled to town road engineering road bed drives first connection diaphragm downstream and then drives motor and auger stem removal through starting the extension of first cylinder, and the starter motor drives auger stem and rotates and then drills and collects the soil sample to the town road after filling, adopts mechanical system to take a sample the degree of difficulty that has reduced artifical sample and has improved the efficiency of sample.
Based on the aforesaid, thereby above-mentioned municipal road engineering road bed filling quality management and control equipment has the soil sample that auger stem took out to adhere to on the drilling rod and bring into the problem that next sampling point influences the testing result, thereby this equipment uses the cylinder to drive the lift in addition, because the air has the compressibility, difficultly carries out precision control to the lift stroke to influence the precision of testing result.
Therefore, in view of the above, research and improvement are performed on the existing structure and defects, and a control equipment board based on the roadbed filling quality of the municipal road engineering is provided, so as to achieve the purpose of higher practical value.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a thereby it influences the problem of testing result to have the soil sample that auger stem took out to adhere to on the drilling rod and bring into next sampling point based on municipal road engineering road bed filling quality management and control equipment board to solve current municipal road engineering road bed filling quality management and control equipment.
The utility model discloses based on purpose and efficiency of municipal road engineering road bed filling quality management and control equipment board, by following specific technological means reach:
based on municipal road engineering subgrade filling quality management and control equipment board includes: the device comprises a chassis, a supporting vertical arm, a supporting transverse arm, a lifting slide block, a lifting motor, a sample storage box, universal wheels, a traction handrail, a drilling lifting mechanism and a drill rod cleaning mechanism; the supporting vertical arm is fixedly arranged in front of the upper side face of the chassis, and a vertical sliding groove is formed in the front side of the supporting vertical arm; the supporting cross arm is fixedly connected to the front side of the upper end of the supporting vertical arm; the rear end of the lifting slide block is connected in a sliding groove in the front side of the support vertical arm in a sliding manner; the lifting motor is a stepping motor and is fixedly arranged at the rear part of the upper end of the supporting vertical arm; the sample storage box is fixedly arranged at the rear part of the upper side surface of the chassis; four universal wheels are arranged and are respectively fixedly arranged at four corners of the bottom surface of the chassis; the traction handrail is fixedly arranged at the rear part of the upper side of the chassis; the drilling lifting mechanism is arranged at the front part of the supporting vertical arm; the drill rod cleaning mechanism is arranged at the front part of the supporting vertical arm.
Further, the drilling lifting mechanism comprises: a lifting vertical arm and a lifting screw rod; the lifting vertical arms are arranged in parallel front and back and are fixedly connected to the upper side face of the lifting slide block respectively; the lifting screw rods are arranged in parallel front and back, are respectively rotatably connected with the supporting cross arm, and are respectively in threaded connection with the lifting vertical arm to form a screw nut transmission pair.
Further, the drilling lifting mechanism further comprises: a lifting worm gear and a lifting worm; the lifting worm gears are arranged in parallel front and back and are respectively and fixedly connected with the lifting screw rods in a coaxial manner; the lifting worm is rotatably connected to the upper side of the supporting cross arm, the rear end of the lifting worm is coaxially and fixedly connected to the tail end of a rotating shaft of the lifting motor, and the lifting worm is meshed with the lifting worm wheel respectively to form a worm and gear transmission mechanism.
Further, the drilling lifting mechanism further comprises: the graduated scale, the graduated scale is the cuboid chi shape structure that has the scale, and graduated scale fixed mounting is in the left surface front portion that supports vertical arm.
Further, the drilling lifting mechanism further comprises: a drilling motor and auger stem; the drilling motor is fixedly arranged on the upper side surface of the lifting slide block, and a rotating shaft of the drilling motor penetrates through the lifting slide block and extends out of the lower side surface of the lifting slide block; the upper end of the spiral drill rod is coaxially and fixedly connected with the tail end of a rotating shaft of the drilling motor.
Further, the drilling rod cleaning mechanism includes: cleaning the steel wire brush, the swinging rack and the incomplete gear; the two cleaning steel wire brushes are arranged in a bilateral symmetry mode and are respectively hinged to the front sides of the supporting vertical arms; the two swing racks are arranged symmetrically left and right, and the swing racks are respectively and fixedly connected to the lower sides of the lifting sliding blocks; the incomplete gears are arranged in a bilateral symmetry mode, the incomplete gears are respectively and fixedly connected to the outer sides of the hinged positions of the cleaning steel wire brushes, and the incomplete gears are respectively meshed with the swing racks to form a gear rack transmission mechanism together.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a probing elevating system carries out the probing to the road bed filling, and the probing motor drives the auger stem and rotates and is used for probing to the road bed filling, and elevator motor drives the elevating worm and rotates, and the elevating worm drives the elevating screw through the elevating worm wheel and rotates to drive lift vertical arm and lift slider to go up and down, thereby make the lift slider drive the probing motor and the elevating of auger stem go up and down in order to drill to the road bed filling; the graduated scale is used for reading the drilling sampling depth, so that the data such as the thickness of each filling layer can be conveniently checked; the utility model discloses a lifting motor is step motor, compares the cylinder and drives the lift, and control lift stroke that can be more accurate obtains more accurate testing result.
The utility model discloses a drilling rod clearance mechanism clears up auger stem, and when beginning the probing, elevator motor drives elevator slide, probing motor and auger stem and drills downwards, and elevator slide drives the swing rack and descends, and the swing rack drives the cleaning wire brush through incomplete gear and swings to both sides, makes the cleaning wire brush leave auger stem; after the probing, elevator motor drives elevator slide, probing motor and auger stem and rises, and elevator slide drives the swing rack and rises, and the swing rack drives clean steel brush from both sides downward swing through incomplete gear, makes clean steel brush and auger stem contact, because the probing motor drives the auger stem and rotates to make clean steel brush clear up the earth on the auger stem, in order to prevent that earth on the auger stem from bringing into next sampling point and influencing the testing result.
Drawings
Fig. 1 is a schematic view of the main structure of the present invention.
Fig. 2 is a schematic sectional view of the vertical support arm according to the present invention.
Fig. 3 is a schematic structural view of the lifting vertical arm and the lifting screw of the present invention.
Fig. 4 is a schematic structural view of the auger stem of the present invention.
Fig. 5 is a schematic structural diagram of the drill rod cleaning mechanism of the present invention.
Fig. 6 is a schematic structural view of the swing rack and the incomplete gear of the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a chassis; 2. a support vertical arm; 3. a supporting cross arm; 4. a lifting slide block; 5. a lifting motor; 6. a drilling motor; 7. cleaning the steel wire brush; 8. a sample storage bin; 101. a universal wheel; 102. a towing handrail; 501. a lifting vertical arm; 502. a lifting screw; 503. a lifting worm gear; 504. a lifting worm; 505. a graduated scale; 601. a auger stem; 701. a swing rack; 702. incomplete gear.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in figures 1 to 6:
the utility model provides a quality management and control equipment board is filled out to road bed based on municipal road engineering, include: the device comprises a chassis 1, a supporting vertical arm 2, a supporting cross arm 3, a lifting slide block 4, a lifting motor 5, a sample storage box 8, a universal wheel 101, a traction handrail 102, a drilling lifting mechanism and a drill rod cleaning mechanism; the supporting vertical arm 2 is fixedly arranged in front of the upper side face of the chassis 1, and a vertical sliding groove is formed in the front side of the supporting vertical arm 2; the supporting cross arm 3 is fixedly connected to the front side of the upper end of the supporting vertical arm 2; the rear end of the lifting slide block 4 is connected in a sliding groove at the front side of the supporting vertical arm 2 in a sliding way; the lifting motor 5 is a stepping motor, and the lifting motor 5 is fixedly arranged at the rear part of the upper end of the supporting vertical arm 2; the sample storage box 8 is fixedly arranged at the rear part of the upper side surface of the chassis 1; four universal wheels 101 are arranged, and the universal wheels 101 are respectively fixedly arranged at four corners of the bottom surface of the chassis 1; the towing handrail 102 is fixedly arranged at the rear part of the upper side of the chassis 1; the drilling lifting mechanism is arranged at the front part of the supporting vertical arm 2; the rod cleaning mechanism is arranged in front of the supporting vertical arm 2.
Wherein, drilling elevating system includes: a lifting vertical arm 501 and a lifting screw 502; the two lifting vertical arms 501 are arranged in parallel, and the lifting vertical arms 501 are respectively fixedly connected to the upper side surfaces of the lifting slide blocks 4; the two lifting screws 502 are arranged in parallel front and back, the lifting screws 502 are respectively rotatably connected with the supporting cross arm 3, and the lifting screws 502 are respectively in threaded connection with the lifting vertical arm 501 to form a screw nut transmission pair.
Wherein, drilling elevating system still includes: a lifting worm wheel 503 and a lifting worm 504; the lifting worm gears 503 are arranged in parallel front and back, and the lifting worm gears 503 are respectively coaxially and fixedly connected with the lifting screw rods 502; the lifting worm 504 is rotatably connected to the upper side of the supporting cross arm 3, the rear end of the lifting worm 504 is coaxially and fixedly connected to the tail end of a rotating shaft of the lifting motor 5, and the lifting worm 504 is respectively meshed with the lifting worm gear 503 to form a worm gear transmission mechanism.
Wherein, drilling elevating system still includes: the graduated scale 505, graduated scale 505 are the cuboid chi-shaped structure that has the scale, and graduated scale 505 fixed mounting is in the left surface front portion that supports vertical arm 2.
Wherein, drilling elevating system still includes: a drilling motor 6 and an auger rod 601; the drilling motor 6 is fixedly arranged on the upper side surface of the lifting slide block 4, and a rotating shaft of the drilling motor 6 penetrates through the lifting slide block 4 and extends out of the lower side surface of the lifting slide block 4; the coaxial fixed connection in the pivot end of drilling motor 6 in upper end of auger stem 601, in use, drilling motor 6 drives auger stem 601 and rotates and is used for probing the roadbed filling, elevator motor 5 drives elevator worm 504 and rotates, elevator worm 504 drives elevator screw 502 through elevator worm wheel 503 and rotates, thereby drive lift vertical arm 501 and the lift slider 4 lift, thereby make lift slider 4 drive drilling motor 6 and auger stem 601 go up and down in order to drill the roadbed filling, scale 505 is used for reading the degree of depth of probing the sample.
Wherein, drilling rod clearance mechanism is including: cleaning a steel wire brush 7, a swing rack 701 and an incomplete gear 702; the two cleaning steel wire brushes 7 are arranged symmetrically left and right, and the cleaning steel wire brushes 7 are respectively hinged to the front sides of the supporting vertical arms 2; the two swing racks 701 are arranged symmetrically left and right, and the swing racks 701 are respectively and fixedly connected to the lower sides of the lifting slide blocks 4; the incomplete gear 702 is provided with two left and right symmetrical gears, the incomplete gear 702 is respectively fixedly connected with the outer side of the hinged part of the cleaning steel wire brush 7, the incomplete gear 702 is respectively meshed with the swing rack 701 to form a gear rack transmission mechanism together, in use, when drilling is started, the lifting motor 5 drives the lifting slide block 4, the drilling motor 6 and the auger stem 601 to drill downwards, the lifting slide block 4 drives the swing rack 701 to descend, the swing rack 701 drives the cleaning steel wire brush 7 to swing towards two sides through the incomplete gear 702 so that the cleaning steel wire brush 7 leaves the auger stem 601, after the drilling is finished, the lifting motor 5 drives the lifting slide block 4, the drilling motor 6 and the auger stem 601 to ascend, the lifting slide block 4 drives the swing rack 701 to ascend, the swing rack 701 drives the cleaning steel wire brush 7 to swing downwards from two sides through the incomplete gear 702 so that the cleaning steel wire brush 7 is contacted with the auger stem 601, the auger stem 601 is driven to rotate by the drilling motor 6, so that the cleaning wire brush 7 cleans the auger stem 601.
The specific use mode and function of the embodiment are as follows:
when the utility model is used, the roadbed filling is drilled through the drilling lifting mechanism, the drilling motor 6 drives the auger stem 601 to rotate for drilling the roadbed filling, the lifting motor 5 drives the lifting worm 504 to rotate, the lifting worm 504 drives the lifting screw 502 to rotate through the lifting worm gear 503, so as to drive the lifting vertical arm 501 and the lifting slide block 4 to lift, and the lifting slide block 4 drives the drilling motor 6 and the auger stem 601 to lift to drill the roadbed filling; the scale 505 is used to read the depth of the drilling sample;
the utility model cleans the auger stem 601 through the drill stem cleaning mechanism, when drilling is started, the lifting motor 5 drives the lifting slide block 4, the drilling motor 6 and the auger stem 601 to drill downwards, the lifting slide block 4 drives the swing rack 701 to descend, the swing rack 701 drives the cleaning steel wire brush 7 to swing towards two sides through the incomplete gear 702, so that the cleaning steel wire brush 7 leaves the auger stem 601; after drilling is finished, the lifting motor 5 drives the lifting slide block 4, the drilling motor 6 and the auger stem 601 to ascend, the lifting slide block 4 drives the swing rack 701 to ascend, the swing rack 701 drives the cleaning steel wire brush 7 to swing downwards from two sides through the incomplete gear 702, the cleaning steel wire brush 7 is in contact with the auger stem 601, and the drilling motor 6 drives the auger stem 601 to rotate, so that the cleaning steel wire brush 7 cleans the auger stem 601.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (6)
1. Based on municipal road engineering roadbed filling quality management and control equipment board, its characterized in that: the method comprises the following steps: the device comprises a chassis (1), a supporting vertical arm (2), a supporting cross arm (3), a lifting slide block (4), a lifting motor (5), a sample storage box (8), universal wheels (101), a traction handrail (102), a drilling lifting mechanism and a drill rod cleaning mechanism; the supporting vertical arm (2) is fixedly arranged in front of the upper side face of the chassis (1), and a vertical sliding groove is formed in the front side of the supporting vertical arm (2); the supporting cross arm (3) is fixedly connected to the front side of the upper end of the supporting vertical arm (2); the rear end of the lifting slide block (4) is connected in a sliding groove at the front side of the supporting vertical arm (2) in a sliding manner; the lifting motor (5) is a stepping motor, and the lifting motor (5) is fixedly arranged at the rear part of the upper end of the supporting vertical arm (2); the sample storage box (8) is fixedly arranged at the rear part of the upper side surface of the chassis (1); four universal wheels (101) are arranged, and the universal wheels (101) are respectively fixedly arranged at four corners of the bottom surface of the chassis (1); the traction handrail (102) is fixedly arranged at the rear part of the upper side surface of the chassis (1); the drilling lifting mechanism is arranged in front of the supporting vertical arm (2); the drill rod cleaning mechanism is arranged at the front part of the supporting vertical arm (2).
2. The municipal road engineering roadbed filling quality control equipment plate based on claim 1, wherein: the drilling lifting mechanism comprises: a lifting vertical arm (501) and a lifting screw (502); the lifting vertical arms (501) are arranged in parallel front and back, and the lifting vertical arms (501) are respectively and fixedly connected to the upper side surface of the lifting slide block (4); the lifting screw rods (502) are arranged in parallel front and back, the lifting screw rods (502) are respectively rotatably connected with the supporting cross arm (3), and the lifting screw rods (502) are respectively in threaded connection with the lifting vertical arm (501) to form a screw rod nut transmission pair.
3. The municipal road engineering roadbed filling quality control equipment plate based on claim 2, wherein: the drilling lifting mechanism further comprises: a lifting worm wheel (503) and a lifting worm (504); the lifting worm gears (503) are arranged in parallel front and back, and the lifting worm gears (503) are respectively and fixedly connected with the lifting screw rods (502) in a coaxial mode; the lifting worm (504) is rotatably connected to the upper side of the supporting cross arm (3), the rear end of the lifting worm (504) is coaxially and fixedly connected to the tail end of a rotating shaft of the lifting motor (5), and the lifting worm (504) is respectively meshed with the lifting worm gear (503) to form a worm gear transmission mechanism.
4. The municipal road engineering roadbed filling quality control equipment plate based on claim 1, wherein: the drilling lifting mechanism further comprises: scale (505), scale (505) are the cuboid chi shape structure of having the scale, and scale (505) fixed mounting is in the left surface front portion that supports vertical arm (2).
5. The municipal road engineering roadbed filling quality control equipment plate based on claim 1, wherein: the drilling lifting mechanism further comprises: a drilling motor (6) and an auger stem (601); the drilling motor (6) is fixedly arranged on the upper side surface of the lifting slide block (4), and a rotating shaft of the drilling motor (6) penetrates through the lifting slide block (4) and extends out of the lower side surface of the lifting slide block (4); the upper end of the auger stem (601) is coaxially and fixedly connected with the tail end of a rotating shaft of the drilling motor (6).
6. The municipal road engineering roadbed filling quality control equipment plate based on claim 1, wherein: the drilling rod clearance mechanism includes: a cleaning steel wire brush (7), a swinging rack (701) and an incomplete gear (702); the two cleaning steel wire brushes (7) are arranged symmetrically left and right, and the cleaning steel wire brushes (7) are respectively hinged to the front sides of the supporting vertical arms (2); the two swing racks (701) are arranged symmetrically left and right, and the swing racks (701) are respectively and fixedly connected to the lower sides of the lifting sliding blocks (4); the incomplete gears (702) are arranged in a left-right symmetrical mode, the incomplete gears (702) are respectively and fixedly connected to the outer sides of the hinged positions of the cleaning steel wire brushes (7), and the incomplete gears (702) are respectively meshed with the swing racks (701) to form a gear-rack transmission mechanism together.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202221030026.7U CN217150146U (en) | 2022-04-29 | 2022-04-29 | Based on municipal road engineering subgrade filling quality management and control equipment board |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202221030026.7U CN217150146U (en) | 2022-04-29 | 2022-04-29 | Based on municipal road engineering subgrade filling quality management and control equipment board |
Publications (1)
Publication Number | Publication Date |
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CN217150146U true CN217150146U (en) | 2022-08-09 |
Family
ID=82663504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202221030026.7U Expired - Fee Related CN217150146U (en) | 2022-04-29 | 2022-04-29 | Based on municipal road engineering subgrade filling quality management and control equipment board |
Country Status (1)
Country | Link |
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CN (1) | CN217150146U (en) |
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2022
- 2022-04-29 CN CN202221030026.7U patent/CN217150146U/en not_active Expired - Fee Related
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GR01 | Patent grant | ||
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220809 |
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CF01 | Termination of patent right due to non-payment of annual fee |