CN218991535U - Perforating dust collector of fire control construction - Google Patents
Perforating dust collector of fire control construction Download PDFInfo
- Publication number
- CN218991535U CN218991535U CN202320298120.9U CN202320298120U CN218991535U CN 218991535 U CN218991535 U CN 218991535U CN 202320298120 U CN202320298120 U CN 202320298120U CN 218991535 U CN218991535 U CN 218991535U
- Authority
- CN
- China
- Prior art keywords
- dust
- connecting plate
- dust collecting
- fixedly connected
- dust collection
- 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.)
- Active
Links
Images
Abstract
The utility model relates to a perforating dust removing device for fire-fighting construction, which comprises a chassis, wherein a fixed seat, a height adjusting component and a dust collecting box are sequentially arranged on the top surface of the chassis, a dust collecting fan is arranged on the dust collecting box, the top end of the height adjusting component is fixedly connected with a supporting table, a detachable connecting piece is arranged on the supporting table, a position adjusting component is fixedly connected on the connecting piece, a dust collecting cover is arranged on one side of the position adjusting component, the dust collecting cover is of a shell structure with two open ends, and a cover body of the dust collecting cover is communicated with the dust collecting fan through a dust collecting hose; the connecting piece comprises a first connecting plate and a second connecting plate, the first connecting plate is connected with the supporting table through a connecting bolt, and the second connecting plate is positioned on one side of the first connecting plate, which is close to the dust hood, and is vertically and fixedly connected with the first connecting plate; when the connecting piece is detached from the supporting table, the second connecting plate and the fixing seat can be connected through the connecting bolt, and the utility model can be suitable for switching between two operation scenes.
Description
Technical Field
The utility model belongs to the technical field of fire-fighting construction equipment, and particularly relates to a punching dust removal device for fire-fighting construction.
Background
At present, in the fire-fighting construction process, a drilling machine is usually required to be used for carrying out punching operation so as to install related fire-fighting equipment, namely, when a drill rod of the drilling machine rotates, a drill bit positioned at the end part of the drill rod is required to carry out drilling operation, and in order to avoid flying a large amount of dust in the drilling process, a punching dust removing device is usually arranged on a fire-fighting construction site to carry out dust removing operation, but because of different installation positions of the fire-fighting equipment, the fire-fighting construction site sometimes needs to be used for punching a wall body and also needs to be used for punching the ground, the existing punching dust removing device is not suitable for being used in a conversion mode between two operation scenes, namely, one set of punching dust removing device is required to be used when the wall body is punched, and the other set of punching dust removing device is required to be replaced when the ground is punched, so that the fire-fighting equipment is inconvenient in use, and therefore the defects and the defects still exist in the prior art.
Disclosure of Invention
The utility model aims to provide a perforating dust removing device for fire-fighting construction, which aims to solve the problems in the background technology.
In order to solve the problems, the utility model adopts the following technical scheme:
the utility model provides a dust collector punches of fire control construction, includes the chassis that the level set up, install fixing base, altitude mixture control subassembly and dust collection box on the top surface of chassis in proper order, install the dust absorption fan that communicates with the dust collection box on the dust collection box, altitude mixture control subassembly is perpendicular with the chassis, and the top fixedly connected with level of altitude mixture control subassembly sets up the brace table, be provided with detachable connecting piece on the brace table, fixedly connected with position control subassembly on the connecting piece, one of them side of position control subassembly is installed and can be followed position control subassembly and be located the dust collection cover outside the chassis, the dust collection cover is both ends open-ended shell structure, is linked together through dust collecting hose between the cover body of dust collection cover and the dust absorption fan;
the connecting piece comprises a first connecting plate and a second connecting plate, four corners of the first connecting plate are connected with the supporting table through connecting bolts, the first connecting plate is fixedly connected with the position adjusting assembly, and the second connecting plate is positioned on one side, close to the dust hood, of the first connecting plate and is vertically and fixedly connected with the first connecting plate; when the connecting piece is detached from the supporting table, four corners of the second connecting plate are connected with the fixing base through connecting bolts.
Further, the opening of the dust hood far away from one end of the position adjusting component is larger than the opening of the other end of the dust hood, a dust collecting pipe is fixedly communicated with the dust hood, one end of the dust collecting hose far away from the dust collecting fan is fixedly communicated with a pipeline joint, and a connecting pipe is connected between the pipeline joint and the dust collecting pipe in a threaded manner and is communicated with the dust collecting pipe through the connecting pipe.
Further, the position adjusting assembly comprises a support plate which is perpendicular to the first connecting plate and fixedly connected with the first connecting plate, threaded rods which are parallel to the first connecting plate and penetrate through the support plate are slidably connected to the two sides of the support plate, locking nuts are connected to the threaded rods located on the two sides of the support plate in a threaded manner, the dust collecting cover is located between the two threaded rods, fixing plates are fixedly connected to the two sides of the dust collecting cover, and the fixing plates are fixedly connected with the threaded rods respectively; the support plate is also provided with a through hole which is arranged coaxially with the dust collecting cover.
Further, a reinforcing rib plate is fixedly connected between the first connecting plate and the second connecting plate, and a reinforcing rib plate is also fixedly connected between the support plate and the first connecting plate.
Further, the height adjusting assembly comprises a rectangular pipe which is vertically distributed, the bottom end of the rectangular pipe is fixedly connected with the chassis, a rectangular rod which is coaxially arranged with the rectangular pipe is connected in a sliding manner in the rectangular pipe, a locking bolt for fixing the rectangular rod is further connected to the rectangular pipe in a threaded manner, and the top end of the rectangular rod is located outside the rectangular pipe and fixedly connected with the supporting table.
Further, an annular sealing ring made of rubber materials is detachably connected in an opening of one end, close to the position adjusting assembly, of the dust collecting cover, and the annular sealing ring and the dust collecting cover are coaxially arranged.
Further, the front opening of dust collection box, and still sliding connection has top surface open-ended water tank in the dust collection box, the front of water tank flushes with the front of dust collection box, and the front of water tank still fixedly connected with handle.
Furthermore, universal wheels with self-locking function are arranged at four corners of the bottom surface of the chassis, two vertically and oppositely distributed push rods are fixedly connected to the chassis, and a handle is arranged at the top end of each push rod.
By adopting the technical scheme, the utility model has the beneficial effects that:
the dust collection assembly can be formed by arranging the dust collection cover, the dust collection hose, the dust collection fan and the dust collection box, so that the dust collection assembly can be used for dust collection when punching operation is carried out on a fire-fighting construction site; secondly, when the wall body is perforated, the dust collection hose is arranged, so that the height position of the dust collection cover can be adjusted through the height adjusting assembly, and dust collection operation can be performed when the wall body is perforated at different height positions; then, through setting up the connecting piece, brace table and fixing base, can make the utility model suitable for changing between two kinds of operation scenes and using, namely when the connecting piece is installed on brace table, the utility model can be suitable for carrying on the dust removal operation while punching on the wall body; when the connecting piece is arranged on the fixing seat, the dust removing device can be suitable for dust removing operation when punching holes on the ground, so that the dust removing device is convenient to use; in addition, the dust collection hose can be conveniently converted for use; finally, by arranging the position adjusting assembly, a distance is reserved between the dust hood and the wall or the ground when the drilling machine is used, so that after a drill rod of the drilling machine passes through the dust hood, whether a drill bit positioned at the end part of the drill rod is aligned with a punching position or not can be conveniently observed; when the dust collecting hose is arranged after the position is aligned, the position of the dust collecting cover can be adjusted through the position adjusting component, and a relatively closed dust collecting space can be formed after the dust collecting cover is abutted with a wall body or the ground.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of FIG. 1 with a partial enlargement at A;
FIG. 3 is a schematic view of a portion of the apparatus of the present utility model;
FIG. 4 is a second schematic structural view of the present utility model.
Reference numerals: 1. a connecting piece; 11. a first connection plate; 12. a second connecting plate; 13. a connecting bolt; 14. reinforcing rib plates; 15. a first threaded through hole; 16. a second threaded through hole; 2. a position adjustment assembly; 21. a support plate; 22. a threaded rod; 23. a lock nut; 24. a through hole; 3. a height adjustment assembly; 31. a rectangular tube; 32. a rectangular bar; 33. a locking bolt; 4. a dust collection cover; 41. a dust collecting pipe; 42. a fixing plate; 43. an annular seal ring; 5. a dust collection hose; 51. a pipe joint; 52. a connecting pipe; 6. a support table; 61. a first threaded hole; 7. a dust collection box; 71. a water tank; 72. a handle; 8. a fixing seat; 81. a second threaded hole; 9. a chassis; 91. a universal wheel; 92. a push rod; 93. a grip; 10. dust collection fan.
Detailed Description
In order to make the objects, technical solutions and advantageous effects of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 4, the utility model provides a perforating dust collector for fire construction, which comprises a horizontally arranged chassis 9, wherein a fixed seat 8, a height adjusting component 3 and a dust collection box 7 are sequentially arranged on the top surface of the chassis 9, a dust collection fan 10 communicated with the dust collection box 7 is arranged on the dust collection box 7, and the dust collection fan 10 is provided with a power supply and a start-stop switch; the height adjusting assembly 3 is vertical to the chassis 9, the top end of the height adjusting assembly 3 is fixedly connected with the supporting table 6 which is horizontally arranged, the detachable connecting piece 1 is arranged on the supporting table 6, the position adjusting assembly 2 is fixedly connected to the connecting piece 1, the dust collecting cover 4 which can move along the position adjusting assembly 2 and is positioned outside the chassis 9 is arranged on one side of the position adjusting assembly 2, the dust collecting cover 4 is of a shell structure with two ends open, the cover body of the dust collecting cover 4 is communicated with the dust collecting fan 10 through the dust collecting hose 5, and particularly, the dust collecting cover 4, the dust collecting hose 5, the dust collecting fan 10 and the dust collecting box 7 can form a dust collecting assembly.
The specific structure of the connector 1 is as follows: as shown in fig. 1 and 4, the connecting piece 1 includes a first connecting plate 11 and a second connecting plate 12, four corners of the first connecting plate 11 are connected with the supporting table 6 through connecting bolts 13, specifically, first threaded through holes 15 are formed at four corners of the first connecting plate 11, first threaded holes 61 opposite to the first threaded through holes 15 are formed at four corners of the supporting table 6, and the first threaded holes 61 and the first threaded through holes 15 can be connected through the connecting bolts 13; the first connecting plate 11 is fixedly connected with the position adjusting assembly 2, and the second connecting plate 12 is positioned on one side of the first connecting plate 11 close to the dust hood 4 and is vertically and fixedly connected with the first connecting plate 11; when the connecting piece 1 is detached from the supporting table 6, four corners of the second connecting plate 12 and the fixed seat 8 can be connected through the connecting bolts 13, specifically, the four corners of the second connecting plate 12 are provided with second threaded through holes 16, the four corners of the fixed seat 8 are provided with second threaded holes 81 opposite to the second threaded through holes 16, and the second threaded holes 81 and the second threaded through holes 16 can be connected through the connecting bolts 13, at this time, as shown in fig. 4, the dust removing assembly can be suitable for dust removing operation when punching on the ground, namely, by arranging the connecting piece 1, the supporting table 6 and the fixed seat 8, the dust removing assembly can be suitable for switching between two operation scenes, and when the connecting piece 1 is installed on the supporting table 6, the dust removing assembly can be suitable for dust removing operation when punching on a wall body; when the connecting piece 1 is arranged on the fixed seat 8, the utility model can be suitable for dust removal operation when punching holes on the ground, thereby being convenient in use; in addition, the dust collection hose 5 can be conveniently used in a conversion mode; finally, by arranging the position adjusting component 2, when the dust collecting cover 4 is used, a distance is reserved between the dust collecting cover 4 and a wall body or the ground, so that after a drill rod of a drilling machine passes through the dust collecting cover 4, whether a drill bit positioned at the end part of the drill rod is aligned with a punching position or not can be conveniently observed; when the dust collection tube 5 is arranged after the position is aligned, the position of the dust collection cover 4 can be adjusted by the position adjusting component 2, and a relatively closed dust collection space can be formed after the dust collection cover 4 is abutted against a wall body or the ground.
Because the utility model can be suitable for switching between two operation scenes, in order to avoid the dust collecting hose 5 from interfering with the switching, as shown in fig. 1 to 4, the opening of one end of the dust collecting cover 4 far away from the position adjusting component 2 is larger than the opening of the other end of the dust collecting cover 4, the dust collecting pipe 41 is fixedly communicated with the dust collecting cover 4, the end of the dust collecting hose 5 far away from the dust collecting fan 10 is fixedly communicated with the pipe joint 51, the pipe joint 51 is in threaded connection with the dust collecting pipe 41 and is communicated with the dust collecting pipe 41 through the connecting pipe 52, specifically, before switching, the connecting pipe 52 can be moved to the pipe joint 51 or the dust collecting pipe 41 by rotating the connecting pipe 52, so that the dust collecting hose 5 and the dust collecting cover 4 can be separated; after conversion, the pipe joint 51 can be aligned with the dust collecting pipe 41, and then the pipe joint 51 is communicated with the dust collecting pipe 41 by the connecting pipe 52, so that the dust collecting hose 5 can be communicated with the dust collecting cover 4, and the utility model can be more conveniently converted and used between two working scenes.
The specific structure of the position adjusting assembly 2 is as follows: as shown in fig. 1 and fig. 4, the position adjusting assembly 2 includes a support plate 21 perpendicular to the first connecting plate 11 and fixedly connected with the support plate, two sides of the support plate 21 are slidably connected with a threaded rod 22 parallel to the first connecting plate 11 and penetrating through the support plate 21, the threaded rods 22 positioned at two sides of the support plate 21 are respectively and threadedly connected with a lock nut 23, the dust hood 4 is positioned between the two threaded rods 22, two sides of the dust hood 4 are fixedly connected with a fixing plate 42, the fixing plate 42 is fixedly connected with the threaded rods 22 respectively, specifically, when the distance between the dust hood 4 and a wall or the ground needs to be adjusted, the lock nut 23 is firstly loosened, then the position of the threaded rod 22 can be slid, when the threaded rod 22 slides, the dust hood 4 can be driven to move, and after the dust hood 4 moves in place, the lock nut 23 abuts against the threaded rod 21, then the position of the threaded rod 22 can be fixed, so that the dust hood 4 can be fixed after the position of the dust hood 4 is adjusted; in addition, the support plate 21 is also provided with a through hole 24 which is arranged coaxially with the dust hood 4, and the through hole 24 does not influence the penetration of a drill rod of the drilling machine through the dust hood 4.
Further, as shown in fig. 1 and fig. 4, a reinforcing rib plate 14 is fixedly connected between the first connecting plate 11 and the second connecting plate 12, so that the structural stability of the connecting piece 1 can be improved; the reinforcing rib plate 14 is fixedly connected between the support plate 21 and the first connecting plate 11, so that the connection strength between the position adjusting assembly 2 and the connecting piece 1 can be improved.
The specific structure of the height adjusting assembly 3 is as follows: as shown in fig. 1 and 4, the height adjusting assembly 3 comprises a rectangular pipe 31 which is vertically distributed, the bottom end of the rectangular pipe 31 is fixedly connected with the chassis 9, a rectangular rod 32 which is coaxially arranged with the rectangular pipe 31 is slidably connected with the rectangular pipe 31, a locking bolt 33 for fixing the rectangular rod 32 is further connected with the rectangular pipe 31 in a threaded manner, the top end of the rectangular rod 32 is positioned outside the rectangular pipe 31 and is fixedly connected with the supporting table 6, specifically, the locking bolt 33 is horizontally arranged and penetrates through the rectangular pipe 31, when the position of the rectangular rod 32 is required to be fixed, the screw rod end of the locking bolt 33 is abutted against the rectangular rod 32 positioned in the rectangular pipe 31 by rotating the locking bolt 33, and thus, the position of the dust collecting cover 4 can be fixed after the height position of the dust collecting cover 4 is adjusted.
When the dust collection device is used, a drill rod of a drilling machine needs to penetrate through the dust collection cover 4, namely, the drill rod of the drilling machine needs to penetrate through an opening of the dust collection cover 4 close to one end of the position adjustment assembly 2, so that a gap exists between the drill rod of the drilling machine and the opening of the end of the dust collection cover 4, and dust is prevented from diffusing outwards from the dust collection cover 4, therefore, as shown in fig. 1 and 4, an annular sealing ring 43 made of rubber materials is detachably connected in the opening of the dust collection cover 4 close to one end of the position adjustment assembly 2, the annular sealing ring 43 and the dust collection cover 4 are coaxially arranged, and specifically, after the drill rod of the drilling machine penetrates through the dust collection cover 4, the annular sealing ring 43 can be deformed and then is clung to the drill rod of the drilling machine, so that dust can be prevented from diffusing outwards from the dust collection cover 4; in addition, the annular sealing ring 4 can deform, so that the rotation of the drill rod of the drilling machine is not influenced.
Since the dust generated during the punching process will finally fall into the dust box 7, in order to clean the dust collected in the dust box 7, as shown in fig. 1 and 4, the front surface of the dust box 7 is opened, the dust box 7 is also slidably connected with a water tank 71 with an open top surface, the front surface of the water tank 71 is flush with the front surface of the dust box 7, a handle 72 is fixedly connected with the front surface of the water tank 71, and in particular, the handle 72 can facilitate the disassembly and assembly of the water tank 71 in the dust box 7; in use, water is contained in the water tank 71 for precipitating dust; the water tank 71 can facilitate cleaning dust when it is taken out of the dust box 7.
Because the positions of punching are different, so the whole position of the punching dust collector needs to be moved sometimes, therefore, as shown in fig. 1 and 4, universal wheels 91 with self-locking functions are arranged at four corners of the bottom surface of the chassis 9, two vertically and oppositely distributed push rods 92 are fixedly connected to the chassis 9, a handle 93 is arranged at the top end of each push rod 92, and specifically, the whole position of the punching dust collector can be moved conveniently by arranging the universal wheels 91, the push rods 92 and the handles 93.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which are all within the scope of the claimed utility model. The scope of the utility model is defined by the appended claims and equivalents.
Claims (8)
1. The utility model provides a dust collector punches of fire control construction, includes the chassis of level setting, its characterized in that: the dust collection device comprises a chassis, a dust collection box, a dust collection fan, a dust collection box, a dust collection cover, a dust collection hose and a detachable connecting piece, wherein a fixing seat, a height adjusting component and the dust collection box are sequentially arranged on the top surface of the chassis;
the connecting piece comprises a first connecting plate and a second connecting plate, four corners of the first connecting plate are connected with the supporting table through connecting bolts, the first connecting plate is fixedly connected with the position adjusting assembly, and the second connecting plate is positioned on one side, close to the dust hood, of the first connecting plate and is vertically and fixedly connected with the first connecting plate; when the connecting piece is detached from the supporting table, four corners of the second connecting plate are connected with the fixing base through connecting bolts.
2. The perforating dust collector of fire construction of claim 1, wherein: the dust collecting cover is provided with a dust collecting pipe, one end of the dust collecting hose, which is far away from the dust suction fan, is fixedly communicated with a pipeline joint, and a connecting pipe is connected between the pipeline joint and the dust collecting pipe in a threaded manner and is communicated with the dust collecting pipe through the connecting pipe.
3. The perforating dust collector of fire construction of claim 1, wherein: the position adjusting assembly comprises a support plate which is perpendicular to the first connecting plate and fixedly connected with the first connecting plate, threaded rods which are parallel to the first connecting plate and penetrate through the support plate are slidably connected to the two sides of the support plate, locking nuts are connected to the threaded rods located on the two sides of the support plate in a threaded mode, the dust collecting cover is located between the two threaded rods, fixing plates are fixedly connected to the two sides of the dust collecting cover, and the fixing plates are fixedly connected with the threaded rods respectively; the support plate is also provided with a through hole which is arranged coaxially with the dust collecting cover.
4. A fire construction's dust collector that punches according to claim 3, characterized in that: the reinforcing rib plate is fixedly connected between the first connecting plate and the second connecting plate, and the reinforcing rib plate is also fixedly connected between the support plate and the first connecting plate.
5. The perforating dust collector of fire construction of claim 1, wherein: the height adjusting assembly comprises a rectangular pipe which is vertically distributed, the bottom end of the rectangular pipe is fixedly connected with the chassis, a rectangular rod which is coaxially arranged with the rectangular pipe is slidably connected with the rectangular pipe, a locking bolt for fixing the rectangular rod is further connected to the rectangular pipe in a threaded manner, and the top end of the rectangular rod is located outside the rectangular pipe and fixedly connected with the supporting table.
6. The perforating dust collector of fire construction of claim 1, wherein: an annular sealing ring made of rubber materials is detachably connected in an opening of one end, close to the position adjusting assembly, of the dust collecting cover, and the annular sealing ring and the dust collecting cover are coaxially arranged.
7. The perforating dust collector of fire construction of claim 1, wherein: the front opening of dust collection box, and still sliding connection has top surface open-ended water tank in the dust collection box, the front of water tank flushes with the front of dust collection box, and the front of water tank still fixedly connected with handle.
8. The perforating dust collector of fire construction of claim 1, wherein: universal wheels with self-locking function are arranged at four corners of the bottom surface of the chassis, two vertically and oppositely distributed push rods are fixedly connected to the chassis, and a handle is arranged at the top end of each push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320298120.9U CN218991535U (en) | 2023-02-23 | 2023-02-23 | Perforating dust collector of fire control construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320298120.9U CN218991535U (en) | 2023-02-23 | 2023-02-23 | Perforating dust collector of fire control construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218991535U true CN218991535U (en) | 2023-05-09 |
Family
ID=86220884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320298120.9U Active CN218991535U (en) | 2023-02-23 | 2023-02-23 | Perforating dust collector of fire control construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218991535U (en) |
-
2023
- 2023-02-23 CN CN202320298120.9U patent/CN218991535U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112012332A (en) | Underground pipeline dredging robot and dredging method | |
| CN218991535U (en) | Perforating dust collector of fire control construction | |
| CN215702974U (en) | Decoration is with dust extraction that punches | |
| CN203626658U (en) | Drum type wellhead mud collecting device | |
| CN211098067U (en) | Anhydrous raise dust processing apparatus for engineering | |
| CN213729434U (en) | Radial drill convenient to collect drill chip | |
| CN211397510U (en) | Dust-proof device for construction of power head of rotary drilling rig | |
| CN112943090A (en) | Drilling machine for traffic engineering road construction | |
| CN109108911B (en) | Automatic drilling equipment of environment-friendly | |
| CN220464328U (en) | Perforating tool for repairing parking lot building | |
| CN216935231U (en) | Dust collecting equipment of emulsion paint stirred tank | |
| CN220659301U (en) | Plate punching device for constructional engineering | |
| CN217889543U (en) | Novel drilling machine for processing metal products | |
| CN111236124A (en) | Slag removal machine for civil engineering | |
| CN219532521U (en) | Ore sample separation device | |
| CN212091507U (en) | Dust collector of road surface joint cutter | |
| CN217078750U (en) | A clear native equipment in on-spot stake hole for building engineering | |
| CN216167207U (en) | Aerated concrete block mortar joint processing apparatus | |
| CN213527823U (en) | Building site dust collector for construction | |
| CN216076962U (en) | Novel landfill gas inspection hole preparation device | |
| CN114800719B (en) | Furniture production equipment with automatic wood chip collecting function | |
| CN220879885U (en) | Dust suppression device for construction waste treatment | |
| CN215627476U (en) | Waste drilling mud treatment device | |
| CN220231000U (en) | Non-disturbance sampling device for heavy metal contaminated soil in river basin | |
| CN219932082U (en) | Hydrogeology test hole drilling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |