CN112857862B - Core splitting sampler for geological mineral drilling - Google Patents

Core splitting sampler for geological mineral drilling Download PDF

Info

Publication number
CN112857862B
CN112857862B CN202110102086.9A CN202110102086A CN112857862B CN 112857862 B CN112857862 B CN 112857862B CN 202110102086 A CN202110102086 A CN 202110102086A CN 112857862 B CN112857862 B CN 112857862B
Authority
CN
China
Prior art keywords
shell
cutting
rod
feeding shell
base
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
Application number
CN202110102086.9A
Other languages
Chinese (zh)
Other versions
CN112857862A (en
Inventor
秦骞
郝天轮
吴庆波
王长双
李超
孟海伦
周在超
王巍
王龙飞
刘进峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202110102086.9A priority Critical patent/CN112857862B/en
Publication of CN112857862A publication Critical patent/CN112857862A/en
Application granted granted Critical
Publication of CN112857862B publication Critical patent/CN112857862B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/04Devices for withdrawing samples in the solid state, e.g. by cutting

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses a core splitting sampler for geological mineral drilling, which comprises a feeding shell and a base, wherein the feeding shell is connected with the base through an opening and closing assembly, the feeding shell is hollow and cylindrical, a waste groove is formed in the bottom end of the feeding shell, the axial direction of the waste groove is consistent with that of the feeding shell, and the waste groove is communicated with the inner part of the feeding shell; the feeding shell is characterized in that a pushing assembly is arranged at one axial end of the feeding shell, a cutting long hole longitudinally penetrating through the end wall of the top end of the feeding shell is formed in the top end of the feeding shell, a cutting piece is arranged in the cutting long hole, the center of the cutting piece is axially connected with the output shaft of a cutting motor, and the cutting motor is connected with the base through an adjusting assembly. The whole chopping operation is finished in the discharging shell, so that dust generated in the chopping process is prevented from falling into the atmosphere to pollute the environment, and meanwhile, stone fragments are prevented from splashing out to cause damage to operators.

Description

Core splitting sampler for geological mineral drilling
Technical Field
The invention relates to the field of geological drilling, in particular to a core splitting sampler for geological mineral drilling.
Background
In the geological field, cylindrical rock samples drilled using ring bits and other coring tools are referred to as cores. The core is an important physical geological data for researching and understanding underground geology and mineral conditions. In geological mineral exploration, when utilizing the core to carry out analytical research, generally need split the core, half is used for the sample chemical examination, knows the analysis geology condition, and half seals up to deposit and carry out the reservation and preserve.
Can produce a large amount of dusts and the stone piece that splashes when cutting apart the sample when cleaving the core, the stone piece that splashes when its polluted environment causes the injury to cutting personnel easily, causes the threat for cutting personnel's life safety, has brought certain puzzlement for core cutting work.
Disclosure of Invention
The invention aims to solve the problems and provides a core splitting sampler for geological mineral drilling, which is simple in structure and convenient to use.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a core splitting sampler for geological mineral drilling comprises a feeding shell and a base, wherein the feeding shell is connected with the base through an opening and closing assembly, the feeding shell is in a hollow cylindrical shape, a waste material groove is formed in the bottom end of the feeding shell, the axial direction of the waste material groove is consistent with the axial direction of the feeding shell, and the waste material groove is communicated with the inner part of the feeding shell; blowing casing axial one end is provided with the propulsion subassembly, and blowing casing top is provided with the cutting slot hole that vertically runs through blowing casing top end wall, is provided with the cutting piece in the cutting slot hole, and the central point of cutting piece puts and is connected with the output axial of cutting motor, and the cutting motor is connected with the base through adjusting part.
Further, the discharging shell is formed by combining a left shell and a right shell, and the left shell and the right shell are symmetrically arranged; left side casing bottom and right casing bottom are through fixed pin axle rotatable coupling, and the axis direction of fixed pin axle is unanimous with the axis direction of blowing casing, and fixed pin axle's axial both ends pass through backup pad fixed connection on the base, and left casing, right casing lateral surface are connected with the base through the subassembly that opens and shuts.
Furthermore, the opening and closing assembly comprises bearing seats and transmission rods, wherein the two bearing seats are fixedly connected to the left side and the right side of the upper end of the base respectively, the transmission rods are connected between the two bearing seats, a first transmission gear is arranged in the middle of each transmission rod, and the first transmission gear is in transmission connection with a transmission motor fixedly connected to the base; the outer side surface of the left end of the transmission rod is provided with a first external thread and is in threaded connection with a first sliding block sleeved on the outer side of the left end of the transmission rod through the first external thread, the first sliding block is connected with one end of a first expanding stay bar through a first connecting lug arranged at the top end of the first sliding block by a pin shaft, and the other end of the first expanding stay bar is connected with a second connecting lug arranged on the outer side of the bottom end of the left shell by a pin shaft; the outer side face of the right end of the transmission rod is provided with a second external thread and is in threaded connection with a second sliding block sleeved on the outer side of the right end of the transmission rod through a second external thread, the second sliding block is in pin connection with one end of a second expanding support rod through a third connecting lug arranged at the top end of the second sliding block, the other end of the second expanding support rod is in pin connection with a fourth connecting lug arranged on the outer side of the bottom end of the right shell, and the rotating directions of the first external thread and the second external thread are opposite.
Furthermore, the opening and closing assemblies are provided with two groups and two groups of opening and closing assemblies are respectively arranged at the bottoms of the two axial ends of the discharging shell.
Further, the propulsion assembly comprises a U-shaped rod, a power screw rod and a limiting block, the length direction of the power screw rod is consistent with the axis direction of the discharging shell, one end of the power screw rod is inserted into the discharging shell and is in threaded connection with the end wall of the discharging shell, one end of the power screw rod inserted into the discharging shell is connected with a bearing at one end of the U-shaped rod, the limiting block is fixedly connected to the outer side of the middle of the U-shaped rod and is embedded in a limiting groove formed in the inner side wall of the discharging shell, the limiting block can slide relative to the limiting groove, and the length direction of the limiting groove is consistent with the axis direction of the discharging shell.
Furthermore, the U-shaped rod is kept away from one end fixedly connected with rubber block of power screw rod, the power screw rod is kept away from the one end fixedly connected with handheld piece of U-shaped rod.
Furthermore, the adjusting assembly comprises a lifting sleeve and a lifting rod, the bottom end of the lifting sleeve is fixedly connected with the upper end face of the base, the top end of the lifting sleeve is sleeved outside the bottom end of the lifting rod, a positioning through hole is formed in the bottom end of the lifting rod, a plurality of adjusting through holes are formed in the outer side of the lifting sleeve, and when any adjusting through hole corresponds to the positioning through hole, the adjusting through hole is inserted into the positioning through hole through a fixing bolt; the top end of the lifting rod is fixedly connected with the cutting motor.
Compared with the prior art, the invention has the advantages and positive effects that:
when the cutting assembly is used, firstly, the opening and closing assembly is used for opening the discharging shell, then, the core drilled and exploited is placed on one side of the cutting piece in the discharging shell, then, the opening and closing assembly is used for closing the discharging component, after the discharging component is closed, the cutting piece is just positioned in the cutting long hole, at the moment, the pushing assembly pushes the core towards the cutting piece, and the core is split into two halves through the rotating operation of the cutting piece, so that the splitting operation of the core is realized; and whole splitting operation is all accomplished in the blowing casing, and the crushed aggregates that the cutting produced all falls into the waste material recess of blowing casing bottom, and it has been avoided can falling into polluted environment in the atmosphere at the dust that the in-process produced of splitting, has avoided the stone piece to splash out simultaneously and has caused the injury to operating personnel, has effectively improved the result of use of rock core splitting sampler, has brought the facility for the rock core splitting operation.
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, and 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 close-up configuration of the present invention;
FIG. 2 is a view of the open state of the present invention;
FIG. 3 is a right view structural diagram of the present invention;
FIG. 4 is a cross-sectional structural view of the present invention;
FIG. 5 is a view of the connection of the left housing to the propulsion assembly;
fig. 6 is a top view of the propulsion assembly.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art without any creative effort, should be included in the protection scope of the present invention.
As shown in fig. 1 to 6, the embodiment discloses a core splitting sampler for geological mineral drilling, which comprises a feeding shell 1 and a base 2, wherein the feeding shell 1 is connected with the base 2 through an opening and closing assembly, the feeding shell 1 is in a hollow cylindrical shape, a waste groove 103 is formed in the bottom end of the feeding shell 1, the axial direction of the waste groove 103 is consistent with the axial direction of the feeding shell 1, and the waste groove 103 is communicated with the inner part of the feeding shell; the axial one end of blowing casing 1 is provided with propulsion subassembly, and blowing casing 1 top is provided with the cutting slot hole 104 that vertically runs through blowing casing 1 top end wall, is provided with cutting piece 3 in the cutting slot hole 104, and the central point of cutting piece 3 puts and cutting motor 18's output axial is connected, and cutting motor 18 is connected with base 2 through adjusting part.
When the cutting assembly is used, firstly, the opening and closing assembly is used for opening the discharging shell, then, the core drilled and exploited is placed on one side of the cutting piece in the discharging shell, then, the opening and closing assembly is used for closing the discharging component, after the discharging component is closed, the cutting piece is just positioned in the cutting long hole, at the moment, the pushing assembly pushes the core towards the cutting piece, and the core is split into two halves through the rotating operation of the cutting piece, so that the splitting operation of the core is realized; and whole splitting operation is all accomplished in the blowing casing, and the crushed aggregates that the cutting produced all falls into the waste material recess of blowing casing bottom, and it has been avoided can falling into polluted environment in the atmosphere at the dust that the in-process produced of splitting, has avoided the stone piece to splash out simultaneously and has caused the injury to operating personnel, has effectively improved the result of use of rock core splitting sampler, has brought the facility for the rock core splitting operation.
The discharging shell 1 is formed by combining a left shell 101 and a right shell 102, and the left shell 101 and the right shell 102 are symmetrically arranged; the bottom end of the left shell 101 and the bottom end of the right shell 102 are rotatably connected through a fixed pin shaft 6, the axis direction of the fixed pin shaft 6 is consistent with the axis direction of the discharging shell 1, the two axial ends of the fixed pin shaft 6 are fixedly connected to the base 2 through a supporting plate 7, and the outer side faces of the left shell 101 and the right shell 102 are connected with the base 2 through an opening and closing assembly.
When the opening and closing operation is carried out, the opening and closing operation of the discharging shell can be realized through the relative rotation opening and closing of the left shell and the right shell, the core placing operation can be carried out after the discharging shell is opened, and the core placing operation can be closed after the placing is finished; the cutting long hole is formed by oppositely combining cutting grooves on the left shell and the right shell.
The two groups of opening and closing assemblies are respectively arranged at the bottoms of the two axial ends of the discharging shell 1; the opening and closing assembly comprises bearing seats 15 and transmission rods 14, the two bearing seats 15 are fixedly connected to the left side and the right side of the upper end of the base 2 respectively, the transmission rods 14 are connected between the two bearing seats 15, a first transmission gear 8 is arranged in the middle of each transmission rod 14, and the first transmission gear 8 is in transmission connection with a transmission motor 9 fixedly connected to the base 2; a first external thread is arranged on the outer side face of the left end of the transmission rod 14 and is in threaded connection with a first sliding block 10 sleeved on the outer side of the left end of the transmission rod 14 through the first external thread, the first sliding block 10 is in pin connection with one end of a first expanding stay rod 11 through a first connecting lug arranged at the top end of the first sliding block 10, and the other end of the first expanding stay rod 11 is in pin connection with a second connecting lug arranged on the outer side of the bottom end of the left shell 101; a second external thread is arranged on the outer side face of the right end of the transmission rod 14 and is in threaded connection with a second sliding block 12 sleeved on the outer side of the right end of the transmission rod 14 through a second external thread, the second sliding block 12 is in pin connection with one end of a second expanding strut 13 through a third connecting lug arranged at the top end of the second sliding block 12, the other end of the second expanding strut 13 is in pin connection with a fourth connecting lug arranged on the outer side of the bottom end of the right shell 102, and the rotation directions of the first external thread and the second external thread are opposite.
When the closing operation is needed, the transmission motor drives the transmission rod to rotate, so that the first sliding block and the second sliding block which are in threaded connection with the two ends of the transmission rod move relatively, the bottom ends of the first expanding strut and the second expanding strut move towards the middle direction of the transmission rod due to the relative movement of the first sliding block and the second sliding block, and the left shell and the right shell are upwards supported by the top ends of the first expanding strut and the second expanding strut, so that the closing operation of the left shell and the right shell is realized; when the opening operation is needed, the first sliding block and the second sliding block can move in opposite directions by reversely rotating the transmission motor, so that the bottom ends of the first expanding strut and the second expanding strut move towards the two ends of the transmission rod, and the bottom ends of the left shell and the right shell are gradually opened after losing the support, thereby completing the opening operation of the discharging shell; the operation is simple and quick, and the using effect of the invention is further improved.
The propulsion subassembly includes U type pole 19, power screw rod 4, stopper 21, the length direction of power screw rod 4 is unanimous with the axis direction of blowing casing 1, the one end of power screw rod 4 is inserted 1 inside and power screw rod 4 and the end wall threaded connection of blowing casing 1, the one end that power screw rod 4 inserted in blowing casing 1 is connected with the one end bearing of U type pole 19, 19 middle part outside fixedly connected with stoppers 21 of U type pole, stopper 21 is rabbeted mutually and stopper 21 can slide for spacing recess 105 with the spacing recess 105 that sets up on 1 inside wall of blowing casing, the length direction of spacing recess 105 is unanimous with the axis direction of blowing casing 1.
The U-shaped rod 19 is far away from one end of the power screw rod 4 and is fixedly connected with a rubber block 20, and the power screw rod 4 is far away from one end of the U-shaped rod 19 and is fixedly connected with a handheld piece 5.
When the propelling operation is carried out, the power screw rod is controlled to rotate firstly, the power screw rod moves towards the interior of the discharging shell under the action of the rotating force, the U-shaped rod slides along the length direction of the limiting sliding groove under the action of the limiting block, so that the rock core placed between the U-shaped rod and the cutting blade is propelled towards the direction of the cutting blade until the rock core is completely cut, the damage to the propelling assembly after the cutting blade cuts the rock core can be avoided due to the design of the U-shaped rod, and the using effect of the propelling assembly is further improved.
The adjusting assembly comprises a lifting sleeve 16 and a lifting rod 17, the bottom end of the lifting sleeve 16 is fixedly connected with the upper end face of the base 2, the top end of the lifting sleeve 16 is sleeved outside the bottom end of the lifting rod 17, a positioning through hole is formed in the bottom end of the lifting rod 17, a plurality of adjusting through holes 1601 are formed in the outer side of the lifting sleeve 16, and when any one adjusting through hole 1601 corresponds to the positioning through hole, the adjusting through hole 1601 is inserted into the positioning through hole through a fixed bolt; the top end of the lifting rod 17 is fixedly connected with a cutting motor 18.
Due to the design of the adjusting assembly, an operator can adjust the height of the cutting motor by selecting the adjusting through holes with different heights, so that the cutting motor is adjusted to a proper height, the cutting work is conveniently and smoothly carried out, and the using effect of the cutting machine is improved.

Claims (3)

1. The utility model provides a geological mineral drilling is with core split sampler which characterized in that: the core splitting sampler comprises a feeding shell and a base, wherein the feeding shell is connected with the base through an opening and closing assembly, the feeding shell is in a hollow cylindrical shape, a waste material groove is formed in the bottom end of the feeding shell, the axial direction of the waste material groove is consistent with the axial direction of the feeding shell, and the waste material groove is communicated with the inner part of the feeding shell; a pushing assembly is arranged at one axial end of the discharging shell, a cutting long hole longitudinally penetrating through the end wall of the top end of the discharging shell is formed in the top end of the discharging shell, a cutting piece is arranged in the cutting long hole, the central position of the cutting piece is axially connected with the output of a cutting motor, and the cutting motor is connected with the base through an adjusting assembly;
the discharging shell is formed by combining a left shell and a right shell, and the left shell and the right shell are symmetrically arranged; the bottom end of the left shell and the bottom end of the right shell are rotatably connected through a fixed pin shaft, the axial direction of the fixed pin shaft is consistent with the axial direction of the discharging shell, the two axial ends of the fixed pin shaft are fixedly connected to the base through supporting plates, and the outer side surfaces of the left shell and the right shell are connected with the base through opening and closing assemblies;
the opening and closing assembly comprises two bearing seats and a transmission rod, wherein the two bearing seats are respectively and fixedly connected to the left side and the right side of the upper end of the base; the outer side surface of the left end of the transmission rod is provided with a first external thread and is in threaded connection with a first sliding block sleeved on the outer side of the left end of the transmission rod through the first external thread, the first sliding block is connected with one end of a first expanding stay bar through a first connecting lug arranged at the top end of the first sliding block by a pin shaft, and the other end of the first expanding stay bar is connected with a second connecting lug arranged on the outer side of the bottom end of the left shell by a pin shaft; the outer side surface of the right end of the transmission rod is provided with a second external thread and is in threaded connection with a second slide block sleeved on the outer side of the right end of the transmission rod through a second external thread, the second slide block is in pin connection with one end of a second expanding rod through a third connecting lug arranged at the top end of the second slide block, the other end of the second expanding support rod is connected with a fourth connecting lug pin shaft arranged on the outer side of the bottom end of the right shell, and the rotating directions of the first external thread and the second external thread are opposite;
the two groups of opening and closing assemblies are respectively arranged at the bottoms of the two axial ends of the discharging shell;
the propulsion subassembly includes U type pole, power screw rod, stopper, the length direction of power screw rod is unanimous with the axis direction of blowing casing, the end wall threaded connection of the inside and power screw rod of blowing casing and blowing casing of power screw rod is inserted to the one end of power screw rod, the one end that the power screw rod inserted in the blowing casing is connected with the one end bearing of U type pole, U type pole middle part outside fixedly connected with stopper, the stopper is rabbeted mutually with the spacing recess that sets up on the blowing casing internal wall and the stopper can slide for spacing recess, the length direction of spacing recess is unanimous with the axis direction of blowing casing.
2. The core splitting sampler for geological mineral drilling as defined in claim 1, wherein: the one end fixedly connected with block rubber of power screw rod is kept away from to U type pole, the one end fixedly connected with handheld piece of U type pole is kept away from to power screw rod.
3. The geological mineral drilling core splitting sampler of claim 2 wherein: the adjusting assembly comprises a lifting sleeve and a lifting rod, the bottom end of the lifting sleeve is fixedly connected with the upper end face of the base, the top end of the lifting sleeve is sleeved outside the bottom end of the lifting rod, the bottom end of the lifting rod is provided with a positioning through hole, the outer side of the lifting sleeve is provided with a plurality of adjusting through holes, and when any adjusting through hole corresponds to the positioning through hole, the adjusting through hole is inserted into the positioning through hole through a fixing bolt; the top end of the lifting rod is fixedly connected with the cutting motor.
CN202110102086.9A 2021-01-26 2021-01-26 Core splitting sampler for geological mineral drilling Active CN112857862B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110102086.9A CN112857862B (en) 2021-01-26 2021-01-26 Core splitting sampler for geological mineral drilling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110102086.9A CN112857862B (en) 2021-01-26 2021-01-26 Core splitting sampler for geological mineral drilling

Publications (2)

Publication Number Publication Date
CN112857862A CN112857862A (en) 2021-05-28
CN112857862B true CN112857862B (en) 2022-11-01

Family

ID=76009128

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110102086.9A Active CN112857862B (en) 2021-01-26 2021-01-26 Core splitting sampler for geological mineral drilling

Country Status (1)

Country Link
CN (1) CN112857862B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107290175A (en) * 2017-08-10 2017-10-24 西南石油大学 A kind of Portable field rock sampler and method
CN109572794A (en) * 2019-02-02 2019-04-05 刘巍 Ice face slides tool
CN208833567U (en) * 2018-07-21 2019-05-07 郑州拓之源机械设备有限公司 A kind of core splitter
CN211489459U (en) * 2020-01-16 2020-09-15 沈小苑 Electric automatization bar cutter
CN111716569A (en) * 2020-06-12 2020-09-29 广西煤炭地质一五〇勘探队 Core splitting sampler for geological mineral drilling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107290175A (en) * 2017-08-10 2017-10-24 西南石油大学 A kind of Portable field rock sampler and method
CN208833567U (en) * 2018-07-21 2019-05-07 郑州拓之源机械设备有限公司 A kind of core splitter
CN109572794A (en) * 2019-02-02 2019-04-05 刘巍 Ice face slides tool
CN211489459U (en) * 2020-01-16 2020-09-15 沈小苑 Electric automatization bar cutter
CN111716569A (en) * 2020-06-12 2020-09-29 广西煤炭地质一五〇勘探队 Core splitting sampler for geological mineral drilling

Also Published As

Publication number Publication date
CN112857862A (en) 2021-05-28

Similar Documents

Publication Publication Date Title
CN105773850B (en) Prepare the cutter device and operating method of the rock sample of structural plane containing different angle
CN210638929U (en) Portable soil sampler
CN115184073A (en) Rock core sampling device for geotechnical engineering
CN112857862B (en) Core splitting sampler for geological mineral drilling
CN206200185U (en) Pipe fitting inner wall drilling machine
CN209783941U (en) Manual-automatic geological detection sampling device
CN111366400A (en) Manual-automatic geological detection sampling device
CN85204726U (en) Rock sampling apparatus
CN216309487U (en) Drilling mechanism of wood structure coring drilling machine in ancient building wall
CN215414472U (en) Ore searching device for enclosed sandstone type molybdenum uranium ore
CN212428668U (en) Well drilling coring combination drilling tool
CN108941687A (en) Radial drilling machine
CN211205828U (en) Geological detection sampling device
CN211652123U (en) Geological exploration rock sampling device
US2809697A (en) Rotary tool for cutting stationary bars of material
CN210128912U (en) Cement concrete compactness detection device
CN102839643A (en) Method for sampling soil body sample
CN206450446U (en) A kind of sampler for petroleum geology exploration
CN220650091U (en) Core split sampler
CN218895962U (en) Geological mineral drilling is with rock core split sampler convenient to it is fixed
CN219657202U (en) Engineering geological survey sample sampling device
CN220729676U (en) Sampling device for geological mineral exploration
US1678307A (en) Earth-boring machine
CN218799295U (en) Novel valve plate processing machine tool
CN219864893U (en) Quick connector of petroleum drilling machine

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant