CN214384135U - Holder for steel strand coring drilling machine - Google Patents
Holder for steel strand coring drilling machine Download PDFInfo
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- CN214384135U CN214384135U CN202120189603.6U CN202120189603U CN214384135U CN 214384135 U CN214384135 U CN 214384135U CN 202120189603 U CN202120189603 U CN 202120189603U CN 214384135 U CN214384135 U CN 214384135U
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Abstract
The utility model provides a holder for steel strand wires core drill relates to prospect drilling equipment technical field, has solved the unable size of adjusting the through-hole of holder that exists among the prior art, and then unable centre gripping is than the big drilling rod of through-hole size or sheathed tube technical problem. The device comprises an oil cylinder support and clamping parts, wherein one end of each clamping part extends into the oil cylinder support, the outer wall of each clamping part is connected with the oil cylinder support in a matched mode, and the two clamping parts can clamp a drilling tool; the clamping part comprises an oil cylinder sleeve, an oil cylinder structure, a pushing body and a clamping tile, the outer wall of the oil cylinder sleeve is connected with an oil cylinder support in a matched mode, the oil cylinder structure and the pushing body can slide relative to the oil cylinder sleeve, the oil cylinder sleeve is connected with the oil cylinder structure in a limiting mode through a limiting column, the oil cylinder structure is connected with one end of the pushing body, the other end of the pushing body is connected with the clamping tile, and the clamping tile can clamp a drilling tool; the oil cylinder structure can push the clamping tile to move along the axial direction of the oil cylinder sleeve and can change the distance between the two clamping tiles.
Description
Technical Field
The utility model belongs to the technical field of prospect rig equipment technique and specifically relates to a holder that is used for core rig is got to steel strand wires is related to.
Background
The clamp holder commonly used by the steel strand coring drilling machine has the main functions of clamping a drilling tool to prevent sliding, is matched with a chuck of the drilling machine to twist and unload a drilling rod and lift and convey the drilling tool, and the using effect and the drilling efficiency of the steel strand coring drilling machine are directly influenced by the performance of the clamp holder. The existing steel strand coring drilling machine can use drill rods with various outer diameters by one machine, and the clamp holder is designed to be an annular through hole, so that the hole diameter is fixed, the drill rod or the sleeve pipe which is larger than the through hole of the clamp holder can be used only by dismounting the clamp holder, and the application range is limited; the characteristics of the steel strand core drilling machine cannot be well exerted due to the fact that a drill rod or a sleeve pipe needs to be manually twisted and disassembled without a clamp holder, time and labor are wasted, and the characteristics of the steel strand core drilling machine cannot be well exerted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a holder for steel strand wires core drill to solve the unable size of adjusting the through-hole of holder that exists among the prior art, and then unable centre gripping is than the drilling rod or the sheathed tube technical problem that the through-hole size is big. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a holder for steel strand wires coring drilling machine, including hydro-cylinder support and clamping part, wherein, one end of clamping part stretches into in the hydro-cylinder support and the outer wall of clamping part with the hydro-cylinder support cooperation is connected, the number of clamping part is two, two the clamping part is located respectively the both sides of hydro-cylinder support and two the clamping part can the centre gripping drilling tool;
the clamping part comprises an oil cylinder sleeve, an oil cylinder structure, a pushing body and a clamping tile, the outer wall of the oil cylinder sleeve is connected with the oil cylinder support in a matched mode, the oil cylinder structure and the pushing body are both located in the oil cylinder sleeve, the oil cylinder structure and the pushing body can slide relative to the oil cylinder sleeve, the oil cylinder sleeve is connected with the oil cylinder structure in a limiting mode through a limiting column, the oil cylinder structure is connected with one end of the pushing body, and the other end of the pushing body is connected with the clamping tile;
the clamping tiles on the two clamping parts are correspondingly arranged, and the drilling tool can be clamped by the two clamping tiles;
the oil cylinder structure can push the clamping tiles to move along the axial direction of the oil cylinder sleeve and can change the distance between the two clamping tiles.
Optionally, a plurality of positioning holes are formed in the cylinder sleeve, a connecting hole is formed in the cylinder structure, and the limiting column can penetrate through the positioning holes in different positions to be connected with the connecting hole.
Optionally, the propelling movement body includes piston, lock sleeve, spring, adjusting screw and double-layered tile seat, the piston is located in the hydro-cylinder structure just the one end of piston is stretched out the hydro-cylinder structure with the inner wall threaded connection of lock sleeve, the spring housing is in on the lock sleeve just the both ends of spring respectively with the tip of lock sleeve with the tip of hydro-cylinder structure is connected, adjusting screw's one end with press from both sides the tile seat and be connected, adjusting screw's the other end passes in proper order the lock sleeve with the piston just adjusting screw with lock sleeve threaded connection, press from both sides the tile and install press from both sides on the tile seat.
Optionally, the oil cylinder structure includes an oil cylinder body and an oil cylinder base, the ends of the oil cylinder body and the oil cylinder base are connected in a matching manner, the outer wall of the oil cylinder body is connected in a matching manner with the inner wall of the oil cylinder sleeve, the outer wall of the oil cylinder base is connected in a matching manner with the inner wall of the oil cylinder sleeve, and the limit column is connected with the oil cylinder base and the oil cylinder sleeve;
and a sealing ring is arranged between the piston and the oil cylinder structure.
Optionally, a limiting part is arranged on the end part of the locking sleeve.
Optionally, one end of the adjusting screw is provided with a clamping groove, and the clamping groove is connected with the tile clamping seat.
Optionally, a positioning strip is arranged in the oil cylinder support, and two ends of the positioning strip are respectively connected with the two pushing bodies in a matching manner.
Optionally, a baffle, a protective sleeve and a cover plate are arranged on the oil cylinder support, the baffle is connected with the protective sleeve, the cover plate is located at the upper end of the oil cylinder support, the baffle and the protective sleeve are located on the side face of the oil cylinder support, and the drill can penetrate through the protective sleeve.
Optionally, the number of the baffles and the number of the protective sleeves are two.
Optionally, an oil pipe joint is arranged on the oil cylinder structure.
The utility model provides a holder for steel strand wires coring drilling machine, through adjusting the distance between two clamping parts, the size of the aperture of the clamping through hole formed by the two clamping parts can be changed, and then drill rods or sleeves with different diameters can be clamped; the size adjusting process of the aperture of the clamping through hole comprises the following steps: the limiting column is taken down firstly, the oil cylinder structure is pushed by external force, and then the pushing body and the clamping tile can move, so that the distance between the two clamping tiles can be changed, namely the size of the aperture of the clamping through hole is changed, the drilling rod or the sleeve pipe with different diameters can be clamped, the problem that the size of the through hole can not be adjusted by the clamp holder in the prior art is solved, and the drilling rod or the sleeve pipe with larger size than the through hole can not be clamped is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a full sectional view of a clamp for a steel strand coring drill provided by an embodiment of the present invention;
fig. 2 is a half-sectional view of a clamp for a steel strand coring drill provided by an embodiment of the present invention;
FIG. 3 is a schematic structural view of a cylinder sleeve of a gripper for a steel strand coring drill provided by an embodiment of the present invention;
in the figure 1, an oil cylinder bracket; 11. a positioning bar; 12. a baffle plate; 13. a protective sleeve; 14. a cover plate; 2. a clamping portion; 21. an oil cylinder sleeve; 211. positioning holes; 212. grooving; 213. connecting sheets; 22. an oil cylinder structure; 221. a cylinder block; 222. a cylinder block; 223. connecting holes; 224. a seal ring; 225. an oil pipe joint; 23. a pushing body; 231. a piston; 2311. a connecting section; 2312. a support section; 232. a locking sleeve; 2321. a limiting part; 233. a spring; 234. adjusting the screw rod; 2341. a clamping groove; 2342. a threaded segment; 2343. a mating segment; 235. a tile clamping seat; 2351. a tile clamping mounting groove; 2352. a clamping groove; 2353. a limiting groove; 24. and (4) clamping the tile.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore 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 also to be understood that the terms "mounted", "connected" and "connected", unless expressly specified or limited otherwise, are intended to be interpreted broadly, as meaning either a fixed connection or a removable connection, or an integral connection; 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 as the case may be, by those of ordinary skill in the art.
The utility model provides a holder for steel strand wires coring drilling machine, including hydro-cylinder support 1 and clamping part 2, wherein, the one end of clamping part 2 stretches into in hydro-cylinder support 1 and the outer wall of clamping part 2 is connected with hydro-cylinder support 1 cooperation, and the number of clamping part 2 is two, and two clamping parts 2 are located the both sides of hydro-cylinder support 1 respectively and two clamping parts 2 can the centre gripping drilling tool;
the clamping part 2 comprises oil cylinder sleeves 21, oil cylinder structures 22, pushing bodies 23 and tile clamping 24, the outer walls of the oil cylinder sleeves 21 are connected with the oil cylinder support 1 in a matched mode, the two oil cylinder sleeves 21 are fixedly connected through a connecting sheet 213, the oil cylinder structures 22 and the pushing bodies 23 are both located in the oil cylinder sleeves 21, the oil cylinder structures 22 and the pushing bodies 23 can slide relative to the oil cylinder sleeves 21, the oil cylinder sleeves 21 are in limit connection with the oil cylinder structures 22 through limiting columns, the oil cylinder structures 22 are connected with one ends of the pushing bodies 23, and the other ends of the pushing bodies 23 are connected with the tile clamping 24;
the clamping shoes 24 on the two clamping parts 2 are correspondingly arranged, and the two clamping shoes 24 can clamp the drilling tool; the cylinder structure 22 can push the shoe 24 to move in the axial direction of the cylinder sleeve 21 and can change the distance between the two shoes 24. The utility model provides a holder for steel strand wires coring drilling machine, through adjusting the distance between two clamping parts 2, the size of the aperture of the clamping through hole formed by the two clamping parts 2 can be changed, and then drill rods or sleeves with different diameters can be clamped; the size adjusting process of the aperture of the clamping through hole comprises the following steps: will take off spacing post earlier, use external force to promote hydro-cylinder structure 22, and then the propelling movement body 23 also can remove with pressing from both sides tile 24, consequently, two distances that press from both sides tile 24 will change, the size in the aperture of centre gripping through-hole has also changed promptly, when pressing from both sides tile 24 and removing the assigned position, install spacing post at last, realized drilling rod or the sleeve pipe that can the centre gripping different diameters size, in order to solve the unable size of adjusting the through-hole of holder that exists among the prior art, and then unable centre gripping is than drilling rod or the sheathed tube technical problem that the through-hole size is big.
As an optional embodiment, a plurality of positioning holes 211 are formed in the cylinder sleeve 21, the positioning holes 211 are distributed along the circumferential direction and the radial direction of the cylinder sleeve 21, a plurality of connecting holes 223 are formed in the cylinder structure 22, the connecting holes 223 are located on the cylinder base 222, the connecting holes 223 are distributed along the circumferential direction of the cylinder base 222, the connecting holes 223 can correspond to the positioning holes 211 in the cylinder sleeve 21 along the circumferential direction, the limiting columns can penetrate through the positioning holes 211 at different positions to be connected with the connecting holes 223, before the cylinder structure 22 is moved, the limiting columns are taken down, when the connecting holes 223 are made to correspond to other positioning holes 211, the limiting columns are installed again when the cylinder structure 22 is moved, and then the cylinder structure 22 cannot move in the cylinder sleeve 21.
As an alternative embodiment, the pushing body 23 includes a piston 231, a locking sleeve 232, a spring 233, an adjusting screw 234 and a slip clamping seat 235, the piston 231 is located in the cylinder structure 22, one end of the piston 231 extends out of the cylinder structure 22 and is in threaded connection with the inner wall of the locking sleeve 232, the piston 231 includes a connecting section 2311 and a supporting section 2312, the connecting section 2311 and the supporting section 2312 are fixedly connected, the diameter of the connecting section 2311 is smaller than that of the supporting section 2312, the supporting section 2312 is in fit connection with the cylinder body 221, the connecting section 2311 is in sealed connection with the cylinder seat 222, and the connecting section 2311 penetrates through the cylinder seat 222 and is in threaded connection with the inner wall of the locking sleeve 232;
the spring 233 is sleeved on the locking sleeve 232, two ends of the spring 233 are respectively connected with the end part of the locking sleeve 232 and the end part of the oil cylinder structure 22, the spring 233 is a belleville spring, and the deformation amount of the belleville spring is relatively small, so that when the tile clamping 24 or the drilling tool is worn, or when a gap exists between the tile clamping 24 and the drilling tool, the tile clamping 24 is finely adjusted, so that the tile clamping 24 clamps the drilling tool;
one end of the adjusting screw 234 is connected with the tile clamping seat 235, the adjusting screw 234 is rotatably connected with the tile clamping seat 235, the other end of the adjusting screw 234 sequentially penetrates through the locking sleeve 232 and the piston 231, the adjusting screw 234 is in threaded connection with the locking sleeve 232, the outer wall of the tile clamping seat 235 is in fit connection with the oil cylinder sleeve 21, and the tile clamping 24 is installed on the tile clamping seat 235.
Fine tuning process of the distance between the two clamping shoes 24 expanding: oil is filled into the cylinder sleeve 21 to compress the spring 233, the locking sleeve 232, the piston 231 and the adjusting screw 234 move in the direction away from the other clamping portion 2, the adjusting screw 234 moves to drive the tile clamping seat 235 to move, and then the tile clamping 24 is driven to move, so that the distance between the two tile clamping seats 24 is increased.
Fine tuning of the distance reduction between the two clamping shoes 24: the oil in the cylinder sleeve 21 is pumped out, so that the spring 233 is restored, the locking sleeve 232, the piston 231 and the adjusting screw 234 move towards the direction close to the other clamping portion 2, the movement of the adjusting screw 234 drives the tile clamping seat 235 to move, and then the tile clamping 24 is driven to move, and the distance between the two tile clamping 24 is reduced.
As an optional embodiment, the oil cylinder structure 22 includes an oil cylinder body 221 and an oil cylinder base 222, the ends of the oil cylinder body 221 and the oil cylinder base 222 are connected in a matching manner, a through hole in the oil cylinder body 221 is larger than a through hole in the oil cylinder base 222, the outer wall of the oil cylinder body 221 is connected in a matching manner with the inner wall of the oil cylinder sleeve 21, the outer wall of the oil cylinder base 222 is connected in a matching manner with the inner wall of the oil cylinder sleeve 21, a limiting column is connected with the oil cylinder base 222 and the oil cylinder sleeve 21, and a connecting hole 223 is formed in the oil cylinder base 222; a seal ring 224 is provided between the piston 231 and the cylinder structure 22 to prevent oil leakage.
As an alternative embodiment, the end of the locking sleeve 232 is provided with a limiting portion 2321, the limiting portion 2321 is one end of the spring 233 to limit the spring 233, and further, the spring 233 can be conveniently compressed.
As an optional implementation manner, one end of the adjusting screw 234 is provided with a clamping groove 2341, and the clamping groove 2341 is connected with the slip clamping seat 235, so that the adjusting screw 234 drives the slip clamping seat 235 to move along the axial direction of the locking sleeve 232. Adjusting screw 234 includes screw thread section 2342 and cooperation section 2343, be provided with the screw thread on the screw thread section 2342, screw thread section 2342 is located in lock sleeve 232 and screw thread section 2342 and lock sleeve 232 threaded connection, screw thread section 2342 and the terminal surface fixed connection between them of cooperation section 2343, the diameter of screw thread section 2342 is greater than the diameter of cooperation section 2343, cooperation section 2343 passes piston 231 and the outer wall of cooperation section 2343 and is connected with the inner wall cooperation of piston 231, cooperation section 2343 can slide in piston 231, joint groove 2341 is located the free end of screw thread section 2342, the free end of screw thread section 2342 is connected with double-layered tile seat 235.
Be provided with on pressing from both sides tile seat 235 and press from both sides tile mounting groove 2351, joint groove 2352 and spacing groove 2353, press from both sides tile mounting groove 2351 and be used for being connected with pressing from both sides tile 24, joint groove 2352 is used for being connected with adjusting screw 234, and spacing groove 2353 is used for being connected with location strip 11.
As an optional implementation manner, a positioning bar 11 is arranged in the cylinder bracket 1, two ends of the positioning bar 11 are respectively connected with the two tile clamping seats 235 in a matching manner, and the positioning bar 11 is used for limiting the rotation of the tile clamping seats 235, so as to avoid the rotation of the tile clamping 24, and further avoid that a drilling tool passing through the protective sleeve 13 cannot pass through the tile clamping 24.
As an optional implementation manner, the oil cylinder support 1 is provided with a baffle 12, a protective sleeve 13 and a cover plate 14, the baffle 12 is connected with the protective sleeve 13, the cover plate 14 is located at the upper end of the oil cylinder support 1, the number of the baffle 12 and the number of the protective sleeve 13 are two, the baffle 12 and the protective sleeve 13 are located on the side face of the oil cylinder support 1, the axial direction of the clamping shoe 24 is consistent with the axial direction of the protective sleeve 13, a drilling tool can penetrate through the protective sleeve 13, the baffle 12 and the cover plate 14 are connected with the oil cylinder support 1 through bolts, the baffle 12 and the cover plate 14 are used for conveniently replacing the clamping shoe 24, the protective sleeve 13 is made of a nylon material, and the protective sleeve 13 is used for preventing the clamping shoe 24 from being scratched and worn when the drilling tool rotates.
In an alternative embodiment, an oil pipe joint 225 is provided on the cylinder structure 22, and a slotted opening 212 is provided on the cylinder sleeve 21, and the oil pipe joint 225 passes through the slotted opening 212 to connect with an external oil drum, so that the oil in the oil drum enters the cylinder sleeve 21 through the oil pipe joint 225, and the oil is used for compressing the spring 233.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A clamp holder for a steel strand coring drilling machine is characterized by comprising an oil cylinder bracket (1) and a clamping part (2), wherein,
one end of each clamping part (2) extends into the corresponding oil cylinder support (1), the outer wall of each clamping part (2) is connected with the corresponding oil cylinder support (1) in a matched mode, the number of the clamping parts (2) is two, the two clamping parts (2) are respectively located on two sides of the corresponding oil cylinder support (1), and drilling tools can be clamped by the two clamping parts (2);
the clamping part (2) comprises an oil cylinder sleeve (21), an oil cylinder structure (22), a pushing body (23) and a clamping tile (24), the outer wall of the oil cylinder sleeve (21) is connected with the oil cylinder support (1) in a matched mode, the oil cylinder structure (22) and the pushing body (23) are both located in the oil cylinder sleeve (21), the oil cylinder structure (22) and the pushing body (23) can slide relative to the oil cylinder sleeve (21), the oil cylinder sleeve (21) is in limited connection with the oil cylinder structure (22) through a limiting column, the oil cylinder structure (22) is connected with one end of the pushing body (23), and the other end of the pushing body (23) is connected with the clamping tile (24);
the clamping tiles (24) on the two clamping parts (2) are correspondingly arranged, and the two clamping tiles (24) can clamp the drilling tool;
the oil cylinder structure (22) can push the clamping shoes (24) to move along the axial direction of the oil cylinder sleeve (21) and can change the distance between the two clamping shoes (24).
2. The holder for the steel strand coring drill rig according to claim 1, wherein a plurality of positioning holes (211) are provided on the cylinder sleeve (21), a connection hole (223) is provided on the cylinder structure (22), and the limit column can pass through the positioning holes (211) at different positions to be connected with the connection hole (223).
3. The holder for the steel strand coring drilling machine as claimed in claim 1, wherein the pushing body (23) comprises a piston (231), a locking sleeve (232), a spring (233), an adjusting screw (234) and a slip holder (235), the piston (231) is located in the cylinder structure (22) and one end of the piston (231) extends out of the cylinder structure (22) and is in threaded connection with the inner wall of the locking sleeve (232), the spring (233) is sleeved on the locking sleeve (232) and two ends of the spring (233) are respectively connected with the end of the locking sleeve (232) and the end of the cylinder structure (22), one end of the adjusting screw (234) is connected with the slip holder (235), the other end of the adjusting screw (234) sequentially passes through the locking sleeve (232) and the piston (231) and the adjusting screw (234) is in threaded connection with the locking sleeve (232), the clamping tile (24) is installed on the clamping tile seat (235).
4. The holder for the steel strand coring drill rig according to claim 3, wherein the cylinder structure (22) comprises a cylinder body (221) and a cylinder base (222), the ends of the cylinder body (221) and the cylinder base (222) are in fit connection, the outer wall of the cylinder body (221) is in fit connection with the inner wall of the cylinder sleeve (21), the outer wall of the cylinder base (222) is in fit connection with the inner wall of the cylinder sleeve (21), and the limit column connects the cylinder base (222) and the cylinder sleeve (21);
and a sealing ring (224) is arranged between the piston (231) and the oil cylinder structure (22).
5. The holder for the steel strand coring drill as set forth in claim 4, wherein a stopper (2321) is provided on an end of the locking sleeve (232).
6. The holder for the steel strand core-drilling machine as claimed in claim 4, wherein one end of the adjusting screw (234) is provided with a clamping groove (2341), and the clamping groove (2341) is connected with the clamping shoe seat (235).
7. The gripper for the steel strand coring drilling machine as claimed in claim 1, wherein a positioning bar (11) is arranged in the cylinder support (1), and two ends of the positioning bar (11) are respectively connected with the two pushing bodies (23) in a matching manner.
8. The clamp holder for the steel strand coring drilling machine according to claim 1, wherein a baffle (12), a protective sleeve (13) and a cover plate (14) are arranged on the cylinder support (1), the baffle (12) is connected with the protective sleeve (13), the cover plate (14) is located at the upper end of the cylinder support (1), the baffle (12) and the protective sleeve (13) are located on the side surface of the cylinder support (1), and the drill can penetrate through the protective sleeve (13).
9. The holder for a steel strand coring drill as set forth in claim 8, wherein the number of the baffle (12) and the shield (13) is two.
10. The holder for a steel strand coring drill as set forth in claim 1, wherein the cylinder structure (22) is provided with a tubing nipple (225).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120189603.6U CN214384135U (en) | 2021-01-20 | 2021-01-20 | Holder for steel strand coring drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120189603.6U CN214384135U (en) | 2021-01-20 | 2021-01-20 | Holder for steel strand coring drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214384135U true CN214384135U (en) | 2021-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120189603.6U Active CN214384135U (en) | 2021-01-20 | 2021-01-20 | Holder for steel strand coring drilling machine |
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| Country | Link |
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| CN (1) | CN214384135U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482880A (en) * | 2021-11-18 | 2022-05-13 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Lower pipe positioning device of geological exploration drill rod |
-
2021
- 2021-01-20 CN CN202120189603.6U patent/CN214384135U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482880A (en) * | 2021-11-18 | 2022-05-13 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Lower pipe positioning device of geological exploration drill rod |
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