CN220602577U - Measuring device for mine underground cave exploration and recording - Google Patents
Measuring device for mine underground cave exploration and recording Download PDFInfo
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- CN220602577U CN220602577U CN202321843071.9U CN202321843071U CN220602577U CN 220602577 U CN220602577 U CN 220602577U CN 202321843071 U CN202321843071 U CN 202321843071U CN 220602577 U CN220602577 U CN 220602577U
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- 238000009434 installation Methods 0.000 claims description 18
- 238000011835 investigation Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a measuring device for mine underground cave exploration and cataloging, which comprises a base body, a tripod, a compass mechanism, a tape mechanism and a sliding support, wherein the tape mechanism comprises a mounting main body, a plug-in column and a tape unit, the tape unit is rotatably arranged in the mounting main body, the plug-in column is slidably arranged at the bottom of the mounting main body, and graduation marks are arranged on the outer side wall of the plug-in column; the top of the base is clamped with a compass mechanism, the middle part of the bottom of the base is provided with a telescopic graduated scale, the bottom edge of the base is provided with a tripod, and the top edge of the base is slidably provided with a plurality of sliding supports and locked by a locking device; the top of sliding support corresponds the scale of compass mechanism and is provided with the instruction arrow, and the lower extreme is provided with tape measure link, and the free end of tape measure unit is provided with tape measure couple. According to the utility model, the indication arrow is arranged at the top of the sliding support, so that the azimuth parameter of the target tape is conveniently read, and the practicality is good.
Description
Technical Field
The utility model belongs to the technical field of underground mine cave detection measuring tools, and particularly relates to a measuring device for underground mine cave detection and recording.
Background
In the geological prospecting process, the cave prospecting engineering is an important prospecting means. The underground exploration and recording work is crucial, lithology limits are divided, data are read, and the underground exploration and recording work has important influence on engineering record and later indoor drawing. In the process of the underground exploration and recording, a compass and a tape are generally needed, and parameters such as the azimuth of the tape are measured through the compass after the position of the tape is determined based on a pre-designed measuring base. However, during measurement, the positions of the tape and the compass need to be manually aligned, so that the manual operation error is large, and the later ore body delineation and mining can be greatly influenced.
Disclosure of Invention
The utility model aims to provide a measuring device for mine underground cave exploration and recording, which is used for visually indicating scales of a sliding support and a compass mechanism through a seat body, is convenient for measuring azimuth parameters of a tape position, can realize accurate adjustment of measurement height through a telescopic graduated scale and a spliced pole, and has good practicability.
The utility model is realized mainly by the following technical scheme:
the measuring device comprises a base body, a tripod, a compass mechanism, a tape mechanism and a sliding support, wherein the tape mechanism comprises a mounting main body, a plug-in column and a tape unit, a handheld end is arranged at the top of the mounting main body, the tape unit is rotatably arranged in the mounting main body, the plug-in column is slidably arranged at the bottom of the mounting main body, the plug-in column is locked through a locking device, and scale marks are arranged on the outer side wall of the plug-in column; the top of the base is clamped with a compass mechanism, the middle part of the bottom of the base is provided with a telescopic graduated scale, the bottom edge of the base is provided with a tripod, and the top edge of the base is slidably provided with a plurality of sliding supports and locked by a locking device; the top of sliding support corresponds the scale of compass mechanism and is provided with the instruction arrow, and the lower extreme is provided with tape measure link, the tape measure free end of tape measure unit corresponds and is provided with tape measure couple.
In order to better realize the utility model, further, the installation main body comprises a fixed seat and a clamping cover, the top of the fixed seat is provided with a handheld end, one side of the fixed seat is provided with an installation groove, the clamping cover is correspondingly arranged, a tape unit is rotatably installed between the clamping cover and the installation groove, and the side wall of the fixed seat is provided with a pull outlet for pulling out the tape.
In order to better realize the utility model, the mounting main body further comprises clamping units, wherein the clamping units are respectively arranged on one side of the clamping cover opposite to the mounting groove, and tape units are arranged between the adjacent clamping units; the clamping unit comprises a fixing protrusion, a clamping seat and a butt protrusion, wherein the fixing protrusion is respectively and fixedly arranged on one side, opposite to the mounting groove, of the clamping cover, the clamping seat is rotatably arranged on the outer side of the fixing protrusion through a bearing, the butt protrusion is connected to one side, close to the tape unit, of the clamping seat through a spring, and butt grooves are respectively and correspondingly arranged in the middle of two sides of the tape unit.
In order to better realize the utility model, further, one side of the clamping cover opposite to the mounting groove is respectively provided with a guide sliding block along the circumferential direction, and two sides of the tape unit are respectively correspondingly provided with a guide sliding groove.
In order to better realize the utility model, further, the bottom of the fixing seat is provided with a fixing column, the outer side of the fixing column is sleeved with a plug-in column in a sliding manner, the fixing column is provided with a long groove along the length direction, the plug-in column is correspondingly provided with a locking hole, and one end of a locking bolt penetrates through the locking hole and is locked with the long groove.
In order to better realize the utility model, furthermore, the two sides of the lower end of the plug-in post are respectively provided with a pedal, and the tail end of the pedal is detachably provided with a balancing weight.
In order to better realize the compass mechanism, the compass mechanism further comprises a tray seat, a north-south pointer and a connecting column, wherein the middle part of the tray seat is provided with a mounting cavity, the mounting cavity is connected with the tray seat in a clamping mode, the middle part of the tray seat is provided with the connecting column, the upper end of the connecting column is provided with the north-south pointer, and one side of the connecting column is provided with an azimuth level.
In order to better realize the utility model, the compass mechanism further comprises a vertical indicator light and an azimuth indicator light, wherein a plurality of azimuth indicator lights are embedded on the periphery side of the top of the connecting column, and the vertical indicator light is embedded on the top of the connecting column; the connecting column is of a hollow structure so as to facilitate wiring.
In order to better realize the utility model, further, the top of the seat body is provided with an annular chute along the circumferential direction, the side wall of the seat body is provided with an arc locking groove, the upper end of the sliding support is correspondingly provided with an annular chute provided with a sliding bulge, the lower end of the sliding support is provided with a locking hole, and one end of the locking bolt penetrates through the locking hole and is locked with the arc locking groove.
The beneficial effects of the utility model are as follows:
(1) According to the utility model, the plurality of sliding supports are arranged at the edge of the seat body, so that the length measurement in a plurality of directions is facilitated; the indication arrow is arranged at the top of the sliding support and visually corresponds to the scale of the compass mechanism for indication, so that the azimuth parameters of the target tape can be conveniently read; the height can be accurately adjusted through the telescopic graduated scale and the splicing column, and the practicability is good;
(2) According to the utility model, the mounting main body can be moved at will through the handheld end, and the position of the height-adjustable fixed tape unit is realized through the sliding connection of the plug-in posts; the convenience of operation is further improved through foot pedal, the balancing weight at the tail end of the foot pedal improves the overall installation stability of the tape mechanism, the influence of the environment is reduced, and the practicality is good;
(3) According to the flexible clamping device, flexible clamping and mounting of tape units with different sizes are realized through the elastic abutting protrusions, the relative stability of the tape units can be realized, and the flexible clamping device has good practicability;
(4) The utility model integrates the north-south pointer, the azimuth level and the wiring of each indicator light through the connecting column, thereby having better practicability; the utility model has the advantages that the measurement is more convenient and more convenient to prepare by the arrangement of the indicator lamp, and the practicability is better.
Drawings
FIG. 1 is a schematic diagram of a connection structure between a compass mechanism and a base;
FIG. 2 is a schematic diagram of a compass mechanism;
FIG. 3 is a schematic diagram of a connection structure between a base and a bracket;
FIG. 4 is a schematic diagram of a connection structure between a base and a tray;
FIG. 5 is a schematic structural view of a tape mechanism;
fig. 6 is a schematic diagram of a connection structure between the mounting body and the card cover.
Wherein: 1-pedestal, 2-tripod, 3-flexible scale, 4-dish seat, 5-spliced pole, 6-azimuth level, 7-annular spout, 8-arc locking groove, 9-installation cavity, 10-sliding support, 11-fixing base, 12-handheld end, 13-joint lid, 14-pedal, 15-clamping unit.
Detailed Description
Example 1:
a measuring device for mine underground cave exploration and recording comprises a base body 1, a tripod 2, a compass mechanism, a tape mechanism and a sliding support 10. The top of the base body 1 is used for installing a compass mechanism, and the bottom is used for installing a tripod 2. The top of the seat body 1 is provided with a plurality of sliding supports 10 in a sliding manner along the circumferential direction, and the sliding supports 10 are used for hanging the free ends of the tape. In the use, one end of the tape is hung on the seat body 1, and the other end of the tape is fixed in position through the tape mechanism. The top of the sliding support 10 is close to the compass mechanism, and the top is provided with an indication arrow, so that the azimuth parameters of the tape on the compass can be conveniently and intuitively read. Preferably, the top of the base 1 is provided with an annular chute 7 along the circumferential direction, the side wall is provided with an arc locking groove 8, the upper end of the sliding support 10 is correspondingly provided with the annular chute 7 to be provided with a sliding bulge, the lower end of the sliding support is provided with a locking hole, and one end of the locking bolt penetrates through the locking hole and is locked with the arc locking groove 8.
Preferably, the tape mechanism comprises a mounting main body, a plug-in column and a tape unit, wherein a handheld end 12 is arranged at the top of the mounting main body, the tape unit is rotatably arranged in the mounting main body, the plug-in column is slidably arranged at the bottom of the mounting main body, the plug-in column is locked through a locking device, and graduation marks are arranged on the outer side wall of the plug-in column. Preferably, a telescopic graduated scale 3 is arranged in the middle of the bottom of the seat body 1. In the use, can remove the installation main part in a flexible way through handheld end 12, when selecting good position, through the position of spliced pole fixed mounting main part, can measure pedestal 1, installation main part's height position respectively through the scale mark on flexible scale 3 and the spliced pole, accurate regulation measurement height after the convenience.
Preferably, the two sides of the lower end of the plug-in column are respectively provided with a pedal 14, and the tail end of the pedal 14 is detachably provided with a balancing weight.
Preferably, the installation main body comprises a fixed seat 11 and a clamping cover 13, a handheld end 12 is arranged at the top of the fixed seat 11, an installation groove is formed in one side of the fixed seat 11 and correspondingly provided with the clamping cover 13, a tape unit is rotatably installed between the clamping cover 13 and the installation groove, and a pull outlet for pulling out the tape is formed in the side wall of the fixed seat 11. Preferably, the mounting main body further comprises a clamping unit 15, the clamping units 15 are respectively arranged on one side of the clamping cover 13 opposite to the mounting groove, and a tape unit is arranged between adjacent clamping units 15; the clamping unit 15 comprises a fixing protrusion, a clamping seat and a butt protrusion, wherein the fixing protrusion is respectively fixedly arranged on one side of the clamping cover 13 opposite to the mounting groove, the clamping seat is rotatably arranged on the outer side of the fixing protrusion through a bearing, the butt protrusion is connected to one side of the clamping seat, which is close to the tape unit, through a spring, and butt grooves are respectively correspondingly arranged in the middle of two sides of the tape unit. According to the flexible tape unit clamping device, flexible clamping and mounting of tape units with different sizes are realized through the elastic abutting protrusions, and relative stability of the tape units can be realized. Preferably, a guiding sliding block is respectively arranged on one side of the clamping cover 13 opposite to the mounting groove along the circumferential direction, and guiding sliding grooves are respectively correspondingly arranged on two sides of the tape unit.
Preferably, the bottom of fixing base 11 is provided with the fixed column, the outside slip cap of fixed column is equipped with the grafting post, the fixed column is provided with elongated slot along length direction, the last locking hole that corresponds that is provided with of grafting post, locking bolt's one end passes the locking hole and locks with elongated slot.
Preferably, the compass mechanism comprises a tray seat 4, north-south pointers and a connecting column 5, wherein an installation cavity 9 is arranged in the middle of the seat body 1, the installation cavity 9 is connected with the tray seat 4 in a clamping mode, the connecting column 5 is arranged in the middle of the tray seat 4, the north-south pointers are arranged at the upper end of the connecting column 5, and an azimuth level 6 is arranged on one side of the connecting column. The compass mechanism further comprises vertical indicator lamps and azimuth indicator lamps, a plurality of azimuth indicator lamps are embedded in the periphery of the top of the connecting column 5, and the vertical indicator lamps are embedded in the top of the connecting column; the connecting column 5 is of a hollow structure so as to facilitate wiring.
In the use process of the utility model, firstly, the compass mechanism is arranged on the seat body 1, then the position of the seat body 1 is built through the tripod 2, the position of the seat body 1 is adjusted through the compass mechanism, and finally, the telescopic graduated scale 3 is lengthened to measure the height position of the seat body 1 at the moment. The position of the carriage 10 on the base 1 is determined based on the actual measurement, and then the measuring parameters such as the azimuth angle of the tape direction at the indication arrow mark on the carriage 10 and the like are passed through the compass. Then, one end of the tape mechanism is fixed at the end position of the tape through the tape hook and the tape hanging ring, the mounting main body is moved until reaching a target place through the handheld end 12, the position of the mounting main body is fixed through the plug-in column, and the height is adjusted through the scale mark on the plug-in column so as to correspond to the position of the telescopic scale 3. And further, the length of the tape is read, and the parameters displayed by the corresponding compass mechanism are displayed.
According to the utility model, the plurality of sliding supports 10 are arranged at the edge of the seat body 1, so that the length measurement in a plurality of directions is facilitated; by arranging an indication arrow at the top of the sliding support 10, the indication arrow visually corresponds to the scales of the compass mechanism for indication, so that the azimuth parameters of the target tape can be conveniently read; and can realize accurate regulation measurement height through flexible scale 3 and spliced pole, have better practicality.
Example 2:
a measuring device for mine underground cave is visited and is recorded, as shown in fig. 1, including pedestal 1, tripod 2, compass mechanism is installed in embedded at the top of pedestal 1, and the bottom edge articulates there is tripod 2, the bottom middle part of pedestal 1 is provided with flexible scale 3 for measure the height of pedestal 1 and ground. As shown in fig. 4, the middle part of the base 1 is provided with a mounting cavity 9 for mounting a compass mechanism, the top edge of the base 1 is provided with an annular chute 7, a plurality of sliding supports 10 are slidably arranged in the annular chute 7, and the sliding supports 10 are fixedly connected with the base 1 through locking bolts. The top of the sliding support 10 is provided with a sliding bulge corresponding to the annular chute 7, and the lower end of the sliding support is provided with a hanging ring for connecting a tape.
Preferably, the side wall of the seat body 1 is provided with an arc locking groove 8 along the circumferential direction, and one end of the locking bolt passes through the sliding support 10 and abuts against the arc locking groove 8 so as to lock the position of the sliding support 10.
Preferably, the tape mechanism comprises a fixed seat 11 and a clamping cover 13, wherein a mounting groove is formed in the middle of the fixed seat 11, one side of the mounting groove is provided with the clamping cover 13, one end of the clamping cover 13 is hinged to the mounting groove, and the other end of the clamping cover is clamped with the mounting groove. The tape unit is rotatably arranged in the mounting groove, and one side of the mounting groove is provided with a pulling outlet for pulling out the tape. The top of fixing base 11 is provided with handheld end 12, and the bottom slip is provided with the spliced pole, and the lateral wall of spliced pole is provided with the scale mark, conveniently looks over the height. The free end of the plug-in column is of a conical structure, so that the plug-in column is convenient to plug in and fix in position. Preferably, the lower extreme of spliced pole is provided with pedal 14, the free end of pedal 14 can be dismantled and be provided with the balancing weight to the position of convenient firm tape mechanism.
Preferably, as shown in fig. 6, the opposite sides of the mounting groove and the clamping cover 13 are symmetrically provided with clamping units 15, respectively, and the tape unit is located between adjacent clamping units 15. The clamping unit 15 comprises a fixing protrusion, a clamping seat and a butt protrusion, wherein the fixing protrusion is respectively fixedly arranged on one side of the clamping cover 13 opposite to the mounting groove, the clamping seat is rotatably arranged on the outer side of the fixing protrusion through a bearing, the butt groove is arranged on one side of the clamping seat close to the tape unit, the butt protrusion is connected inside the butt groove through a spring, and butt grooves are respectively and correspondingly arranged in the middle of two sides of the tape unit. Preferably, the edge of one side of the clamping cover 13 opposite to the mounting groove is respectively provided with a guide protrusion, two sides of the tape unit are respectively correspondingly provided with a guide sliding rail, and the guide protrusions are in sliding connection with the guide sliding rails.
Preferably, as shown in fig. 2, the compass mechanism comprises a tray seat 4, north-south pointers and a connecting column 5, a mounting cavity 9 is arranged in the middle of the seat body 1, the mounting cavity 9 is clamped with the tray seat 4, the connecting column 5 is arranged in the middle of the tray seat 4, the north-south pointers are arranged at the upper end of the connecting column 5, and an azimuth level 6 is arranged on one side of the connecting column. Preferably, the device further comprises a vertical indicator lamp and an azimuth indicator lamp, wherein a plurality of azimuth indicator lamps are embedded in the periphery of the top of the connecting column 5, and the vertical indicator lamp is embedded in the top; the connecting column 5 is of a hollow structure so as to facilitate wiring.
In the use process of the utility model, firstly, the compass mechanism is arranged on the seat body 1, then the position of the seat body 1 is built through the tripod 2, the position of the seat body 1 is adjusted through the compass mechanism, and finally, the telescopic graduated scale 3 is lengthened to measure the height position of the seat body 1 at the moment. The position of the carriage 10 on the base 1 is determined based on the actual measurement, and then the measuring parameters such as the azimuth angle of the tape direction at the indication arrow mark on the carriage 10 and the like are passed through the compass. Then, one end of the tape mechanism is fixed at the end position of the tape through the tape hook and the tape hanging ring, the mounting main body is moved until reaching a target place through the handheld end 12, the position of the mounting main body is fixed through the plug-in column, and the height is adjusted through the scale mark on the plug-in column so as to correspond to the position of the telescopic scale 3. And further, the length of the tape is read, and the parameters displayed by the corresponding compass mechanism are displayed.
According to the utility model, the plurality of sliding supports 10 are arranged at the edge of the seat body 1, so that the length measurement in a plurality of directions is facilitated; by arranging an indication arrow at the top of the sliding support 10, the indication arrow visually corresponds to the scales of the compass mechanism for indication, so that the azimuth parameters of the target tape can be conveniently read; and can realize accurate regulation measurement height through flexible scale 3 and spliced pole, have better practicality.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present utility model fall within the scope of the present utility model.
Claims (9)
1. The measuring device for underground mine exploration and cataloging is characterized by comprising a base body (1), a tripod (2), a compass mechanism, a tape mechanism and a sliding support (10), wherein the tape mechanism comprises a mounting main body, a plug-in column and a tape unit, a handheld end (12) is arranged at the top of the mounting main body, the tape unit is rotatably arranged in the mounting main body, the plug-in column is slidably arranged at the bottom of the mounting main body, the plug-in column is locked through a locking device, and graduation marks are arranged on the outer side wall of the plug-in column; the top of the base body (1) is clamped with a compass mechanism, a telescopic graduated scale (3) is arranged in the middle of the bottom of the base body (1), a tripod (2) is arranged at the bottom edge, a plurality of sliding supports (10) are slidably arranged at the top edge of the base body (1), and the base body is locked through a locking device; the top of the sliding support (10) is provided with an indication arrow corresponding to the scale of the compass mechanism, the lower end of the sliding support is provided with a tape hanging ring, and the free end of the tape unit is correspondingly provided with a tape hook.
2. The measuring device for mine underground cave exploration and recording according to claim 1, wherein the installation main body comprises a fixed seat (11) and a clamping cover (13), a handheld end (12) is arranged at the top of the fixed seat (11), an installation groove is formed in one side of the fixed seat (11), the clamping cover (13) is correspondingly arranged, a tape unit is rotatably arranged between the clamping cover (13) and the installation groove, and a pull outlet for pulling out a tape is formed in the side wall of the fixed seat (11).
3. The measuring device for mine underground cave logging according to claim 2, wherein the mounting main body further comprises clamping units (15), the clamping units (15) are respectively arranged on one side, opposite to the mounting groove, of the clamping cover (13), and tape units are arranged between adjacent clamping units (15); the clamping unit (15) comprises a fixing protrusion, a clamping seat and a butt protrusion, wherein the fixing protrusion is fixedly arranged on one side, opposite to the mounting groove, of the clamping cover (13), the clamping seat is rotatably arranged on the outer side of the fixing protrusion through a bearing, the butt protrusion is connected to one side, close to the tape unit, of the clamping seat through a spring, and butt grooves are correspondingly formed in the middle of two sides of the tape unit respectively.
4. A measuring device for mine underground cave investigation and recording according to claim 3, characterized in that, the opposite sides of the clamping cover (13) and the installation groove are respectively provided with a guiding sliding block along the circumferential direction, and the two sides of the tape unit are respectively provided with a guiding sliding groove correspondingly.
5. The measuring device for mine underground cave exploration and recording according to claim 2, wherein a fixed column is arranged at the bottom of the fixed seat (11), an inserting column is sleeved on the outer side of the fixed column in a sliding mode, an elongated groove is formed in the fixed column along the length direction, a locking hole is correspondingly formed in the inserting column, and one end of a locking bolt penetrates through the locking hole and is locked with the elongated groove.
6. The measuring device for mine underground cave logging according to any one of claims 1 to 5, wherein foot pedal plates (14) are respectively arranged on two sides of the lower end of the plug-in connection column, and balancing weights are detachably arranged at the tail ends of the foot pedal plates (14).
7. The measuring device for mine underground cave exploration and recording according to claim 1, wherein the compass mechanism comprises a tray seat (4), north-south pointers and a connecting column (5), an installation cavity (9) is formed in the middle of the seat body (1), the installation cavity (9) is clamped with the tray seat (4), the connecting column (5) is arranged in the middle of the tray seat (4), the north-south pointers are arranged at the upper end of the connecting column (5), and an azimuth level (6) is arranged on one side of the compass mechanism.
8. The measuring device for mine underground cave logging according to claim 7, wherein the compass mechanism further comprises vertical indicator lamps and azimuth indicator lamps, a plurality of azimuth indicator lamps are embedded in the periphery of the top of the connecting column (5), and the vertical indicator lamps are embedded in the top of the connecting column; the connecting column (5) is of a hollow structure so as to facilitate wiring.
9. The measuring device for mine underground cave logging according to claim 1, wherein the top of the base body (1) is provided with an annular chute (7) along the circumferential direction, the side wall of the base body is provided with an arc locking groove (8), the upper end of the sliding support (10) is correspondingly provided with the annular chute (7) provided with a sliding bulge, the lower end of the sliding support is provided with a locking hole, and one end of the locking bolt penetrates through the locking hole and is locked with the arc locking groove (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321843071.9U CN220602577U (en) | 2023-07-13 | 2023-07-13 | Measuring device for mine underground cave exploration and recording |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321843071.9U CN220602577U (en) | 2023-07-13 | 2023-07-13 | Measuring device for mine underground cave exploration and recording |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220602577U true CN220602577U (en) | 2024-03-15 |
Family
ID=90182148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321843071.9U Active CN220602577U (en) | 2023-07-13 | 2023-07-13 | Measuring device for mine underground cave exploration and recording |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220602577U (en) |
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2023
- 2023-07-13 CN CN202321843071.9U patent/CN220602577U/en active Active
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