CN209745587U - Geological hammer for coal rock grooving sampling - Google Patents
Geological hammer for coal rock grooving sampling Download PDFInfo
- Publication number
- CN209745587U CN209745587U CN201920475922.6U CN201920475922U CN209745587U CN 209745587 U CN209745587 U CN 209745587U CN 201920475922 U CN201920475922 U CN 201920475922U CN 209745587 U CN209745587 U CN 209745587U
- Authority
- CN
- China
- Prior art keywords
- sample
- hammer
- sampling
- geological
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The embodiment of the utility model relates to the technical field of geological exploration equipment, and discloses a geological hammer for coal rock grooving sampling, which comprises a hammer part and a handle part connected with the hammer part, wherein the hammer part comprises a hammer body, a hammer head used for balancing weight and a chisel head used for chiseling a sample; the first end of the hammer body is connected to the hammer head, and the second end of the hammer body is connected to the chisel head; the hammer body is internally provided with a sample storage cavity, the second end of the hammer body is provided with a sample inlet communicated with the sample storage cavity, and the sample inlet is rotatably connected with a sample injection cover which can be opened and closed. This geological hammer simple structure, convenient to use collects the hammering, cuts a hole and gets and the sample stores in an organic whole, and hammering at every turn can in time collect the sample in the hammer internally, need not to lay the tarpaulin again, and the pollution that causes when having also avoided transferring the sample to the sample bag from the tarpaulin has both improved the efficiency of geological sampling, has saved manpower and time, has reduced the pollution of sampling in-process coal petrography sample again.
Description
Technical Field
The embodiment of the utility model provides a geological hammer for coal petrography grooving sampling is related to geological exploration equipment technical field especially.
background
The coal petrography coal sample is mainly used for coal petrography research, determines the lithofacies composition and the coalification degree of coal, is one of main bases for evaluating the properties and the purposes of the coal, and is also an important basis for coal layer comparison and research on the cause and the deterioration of the coal in an area. The grooving method is an important sampling mode for coal samples, and the coal grooving method generally comprises the steps of grooving a long groove in a roadway (namely underground mine) according to a certain length, and collecting all coal rocks chiseled from the long groove as samples.
The existing method for cutting the tunnel coal rock sample is generally to use a geological hammer and a chisel to match, chisel the coal rock in the groove on the tunnel wall, the mining face or the tunneling face of the mine, lay waterproof cloth on the ground, receive the coal rock sample dropped by the chisel, and then collect the coal rock sample into a sample bag. However, in actual sampling, the mine tunnel is often laid with the protection network, inconvenient sampling, the sampling position generally is located face or the face of drivage, ground space is narrow and small, there is ponding, or the more inconvenient clearance of coal that drops, can not or inconvenient lay the waterproof cloth and catch the coal sample that the notch chiseled, use geological hammer cooperation chisel to carry out the notch chiseling sampling under this condition, the coal petrography sample that chisels falls into ponding easily, mix into original coal cinder on the ground easily, cause the pollution of coal petrography sample.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a geological hammer for coal petrography grooving sampling for solve the difficult collection of sample and the easy contaminated problem of current geological hammer grooving sampling, realize getting and collecting the synchronous chisel of coal petrography sample.
The embodiment of the utility model provides a geological hammer for coal petrography grooving sampling, including hammer block and the handle portion that is connected to the hammer block, the hammer block includes hammer block, the tup that is used for the counter weight and is used for the chisel head of chisel sample; the first end of the hammer body is connected to the hammer head, and the second end of the hammer body is connected to the chisel head; the hammer body is internally provided with a sample storage cavity, the second end of the hammer body is provided with a sample inlet communicated with the sample storage cavity, and the sample inlet is rotatably connected with a sample injection cover which can be opened and closed.
Wherein, advance the sample lid and include a plurality of valves, the link of valve with it is articulated to advance the sample port, it is a plurality of the free end of valve is mutually supported, in order to incite somebody to action the sample port seals.
Wherein the sample injection cover is convertible between a closed configuration and an open configuration, and when the sample injection cover is in the closed configuration, an included angle between a plane where the sample injection port is located and the valve is 15-30 degrees.
The sample storage cavity is internally provided with elastic pieces which are in one-to-one correspondence with the valves, one end of each elastic piece is connected to the inner wall of the sample storage cavity, and the other end of each elastic piece is connected to the valve.
Wherein the elastic member comprises a coil spring or a leaf spring.
Wherein, the intercommunication has been seted up to the first end of hammer block store up the appearance mouth of appearance chamber, the tup can dismantle connect in go out the appearance mouth.
The chisel head is arc-shaped triangular, the concave surface of the chisel head faces the sample inlet, and the tip of the chisel head is far away from the sample inlet.
The device also comprises an arc-shaped baffle, and the chisel head and the baffle are connected to the edge of the sample inlet; the concave surface of the baffle is opposite to the concave surface of the chisel head.
the embodiment of the utility model provides a geological hammer for coal petrography grooving sampling, including hammer block and handle portion, the hammer block includes hammer block, tup and chisel head, and the first end of hammer block is connected in the tup, and the second end of hammer block is connected in the chisel head, can adjust the holistic weight of geological hammer through the tup to provide suitable hitting power, through the chisel coal petrography in the sampling process, can acquire required coal petrography sample. Simultaneously, through set up the storage appearance chamber in the hammer block, and rotate at the introduction port and be connected with openable into the sample lid, can realize the collection and the storage of coal petrography sample convenient and fast ground. When the chisel head chisels coal rocks, the sample injection cover is subjected to the stamping force of the chiseled coal rock samples towards the sample storage cavity, so that the sample injection cover is opened inwards, and the coal rock samples enter the sample storage cavity from the sample injection port and are collected; when the geological hammer is lifted, sampling is finished, the stamping force disappears, and the sampling cover automatically restores to a closed state. This geological hammer simple structure, convenient to use collects the hammering, cuts a hole and gets and the sample stores in an organic whole, and hammering at every turn can in time collect the sample in the hammer internally, need not to lay the tarpaulin again, and the pollution that causes when having also avoided transferring the sample to the sample bag from the tarpaulin has both improved the efficiency of geological sampling, has saved manpower and time, has reduced the pollution of sampling in-process coal petrography sample again.
drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 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 schematic structural diagram of a geological hammer for sampling coal rock notches in an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the geological hammer used for coal petrography groove sampling in FIG. 1;
FIG. 3 is an enlarged partial view of the geological hammer used for coal petrography groove sampling in FIG. 2;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 5 is a view from the direction B of FIG. 1;
Description of reference numerals:
1: a handle portion; 2: a hammer head; 3: a hammer body;
31: a sample storage cavity; 4: chiseling a head; 5: a sample injection cover;
51: a valve; 52: a hinge; 6: a baffle plate;
7: a spring plate; 8: and (5) sealing rings.
Detailed Description
in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "first" and "second" are used for clearly indicating the numbering of the product parts and do not represent any substantial difference unless explicitly stated or limited otherwise. The directions of the upper part, the lower part, the left part and the right part are all based on the directions shown in the attached drawings. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
It is to be understood that, unless otherwise expressly specified or limited, the term "coupled" is used broadly, and may, for example, refer to directly coupled devices or indirectly coupled devices through intervening media. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
Fig. 1 is the embodiment of the utility model provides an in the utility model provides a structural schematic diagram of a geological hammer for coal petrography grooving sampling, fig. 2 is the cross-sectional view of the geological hammer for coal petrography grooving sampling in fig. 1, fig. 3 is the local enlargements of the geological hammer for coal petrography grooving sampling in fig. 2, as shown in fig. 1 to 3, the embodiment of the utility model provides a geological hammer for coal petrography grooving sampling, including hammer block and connect in the handle portion 1 of hammer block, hammer block includes hammer block 3, is used for the tup 2 of counter weight and is used for chisel head 4 of sample. The upper end of the hammer body 3 is connected with the hammer head 2, and the lower end of the hammer body 3 is connected with the chisel head 4. Be equipped with in the hammer block 3 and store up appearance chamber 31, the sample connection that communicates and store up appearance chamber 31 is seted up to the lower extreme of hammer block 3, and the sample connection rotates and is connected with openable sampling lid 5.
Specifically, the handle portion 1 is an elongated rod-shaped object, and can be held by a user. The outside of the handle portion 1 is rubberized to reduce vibration to the hand during use. The handle 1 may be connected to the outer side wall of the hammer body 3, or may be connected to the outer side wall of the hammer head 2.
the hammer head 2 is a solid metal block, and in a specific embodiment, the hammer head 2 can be made of iron. The hammer head 2 is used as a balance weight part of the geological hammer, is a kinetic energy basis of a hammering process in a sampling process, and can control the striking speed. The hammer head 2 can be in any shape as long as the weight requirement is met. In one embodiment, the hammer head 2 is an hourglass-shaped cylinder with rounded top and bottom surfaces and a diameter of 5.5cm to 6.0 cm. The longitudinal section of the device is a rectangle with two circular arc waists and the height of the longitudinal section is 3 cm.
The chisel head 4 is a solid metal piece and in a particular embodiment the chisel head 4 may be made of iron. The tail part of the chisel head 4 is connected with the lower end of the hammer body 3, and the head part of the chisel head 4 faces outwards to form a cutting edge.
The hammer body 3 is of a hollow structure, and a sample storage cavity 31 in the hammer body is used for storing a dug coal rock sample in the sampling process. In a specific embodiment, the hammer body 3 is a hollow cylinder made of iron material, the inner diameter of the hammer body is 5cm, the outer diameter of the hammer body is 6cm, and the upper end surface and the lower end surface of the hammer body 3 are both flat surfaces.
The lower end face of the hammer body 3 is provided with an opening as a sample inlet. An openable and closable sample introduction cover 5 is rotatably connected to the inner wall surface of the sample introduction port of the hammer body 3. When the geological hammer is in an initial state, the sample injection cover 5 seals the sample injection port; when the geological hammer drills a coal rock sample by using the chisel head 4, the sample injection cover 5 is subjected to the stamping force of the chiseled coal rock sample towards the sample storage cavity 31, so that the sample injection cover 5 is opened inwards, and the coal rock sample enters the sample storage cavity 31 from the sample injection port and is collected; when the geological hammer is lifted, sampling is finished, the stamping force disappears, and the sampling cover 5 automatically restores to a closed state.
The utility model provides a geological hammer for coal petrography grooving sampling, includes hammer block and handle portion, and the hammer block includes hammer block, tup and chisel head, and the first end of hammer block is connected in the tup, and the second end of hammer block is connected in the chisel head, can adjust the holistic weight of geological hammer through the tup to provide suitable hitting power, through the chisel coal petrography at the sampling in-process, can acquire required coal petrography sample. Simultaneously, through set up the storage appearance chamber in the hammer block, and rotate at the introduction port and be connected with openable into the sample lid, can realize the collection and the storage of coal petrography sample convenient and fast ground. When the chisel head chisels coal rocks, the sample injection cover is subjected to the stamping force of the chiseled coal rock samples towards the sample storage cavity, so that the sample injection cover is opened inwards, and the coal rock samples enter the sample storage cavity from the sample injection port and are collected; when the geological hammer is lifted, sampling is finished, the stamping force disappears, and the sampling cover automatically restores to a closed state. This geological hammer simple structure, convenient to use collects the hammering, cuts a hole and gets and the sample stores in an organic whole, and hammering at every turn can in time collect the sample in the hammer internally, need not to lay the tarpaulin again, and the pollution that causes when having also avoided transferring the sample to the sample bag from the tarpaulin has both improved the efficiency of geological sampling, has saved manpower and time, has reduced the pollution of sampling in-process coal petrography sample again.
Further, as shown in fig. 3 and 4, the sample injection cover 5 includes a plurality of valves 51, the connection ends of the valves 51 are hinged with the sample injection port, and the free ends of the valves 51 are matched with each other to close the sample injection port.
Specifically, three valves 51 are taken as an example in the present embodiment for illustration, and the number of the valves 51 may be any integer greater than 1, which is not limited herein. The top view of the valve 51 is a fan shape with an included angle of 120 degrees, two side edges of the fan shape are free ends of the valve 51, and an arc edge of the fan shape is a connecting end of the valve 51. The side edges of two adjacent valves 51 are mutually overlapped, and meanwhile, the arc edges of the valves 51 are hinged with the injection port through hinges 52, so that the valves 51 can be turned around the rotating shafts of the hinges 52. In the initial state, the three valves 51 overlap each other to form a seal for the injection port. When the coal petrography sample is dug down and upwards strikes the sample inlet cover 5, under the effect of the punching force, the three valves 51 are all turned inwards, so that gaps are formed among the three valves 51, and the coal petrography sample can smoothly enter the sample storage cavity 31. When the drilling process is finished, the punching force disappears, and the three valves 51 automatically return outwards, so that the sample inlet is closed again, and the coal rock sample in the sample storage cavity 31 is prevented from falling out. The one-way conduction of the sample inlet is realized by arranging the valves, so that the coal rock sample can enter the sample storage cavity, and the collected sample can be prevented from falling out.
In addition to the above, the sample injection cover 5 may also be a circular plate, one end of the circular plate is hinged to the sample injection port through a hinge, and the remaining edge of the circular plate is overlapped with the inner wall of the sample storage cavity 31.
Further, as shown in fig. 3, the injection cover 5 is convertible between a closed configuration and an open configuration, and when the injection cover 5 is in the closed configuration, the free ends of two adjacent valves 51 overlap each other. When the sample injection cover 5 is in an open configuration, the valves 51 are turned inwards, and the free ends of two adjacent valves 51 are released from the lap joint state. When the sample injection cover 5 is in the closed configuration, the angle α between the plane of the sample injection port and the valve 51 is 15 ° to 30 °. The valve is inclined inwards by a certain angle, so that the sample injection cover is easier to open inwards, and the coal rock sample can be collected as much as possible; meanwhile, the lapped sharp corner formed between the adjacent valves can be used for preventing the sample in the sample storage cavity from reversely opening the sample injection cover and further falling out to cause sample pollution.
Further, as shown in fig. 3 and 4, elastic members corresponding to the valves 51 one to one are further disposed in the sample storage chamber 31, one end of each elastic member is connected to the inner wall of the sample storage chamber 31, and the other end of each elastic member is connected to the valve 51. Further, the elastic member includes a coil spring or a leaf spring 7. In the present embodiment, the spring plate 7 is taken as an example for explanation, and the rest of the elastic members are similar to the spring plate.
Specifically, the spring 7 is an arched rectangular spring, the lower end of the spring is connected with the valve 51, and the upper end of the spring 7 is connected with the inner wall of the sample storage cavity 31. In the sampling process, after the geological hammer chisels the coal rock sample, the coal rock sample extrudes the valve 51 inwards, so that the valve 51 is turned inwards, and the sample injection cover 5 is opened. At this time, the spring piece 7 is pressed and is in a compressed state. After the geological hammer is lifted, the spring leaf 7 in the compressed state automatically restores to the initial state because the inward pressure applied to the valve 51 disappears, so that the spring leaf 7 presses the valve 51 outwards, the valve 51 is overturned outwards and restores to the original position, and the sample injection cover 5 is closed. The elastic element can improve the speed of the sample feeding cover for recovering the closed configuration and the sealing performance of the sample feeding cover, and prevent the samples in the sample storage cavity from falling out.
Further, the upper end of the hammer body 3 is provided with a sample outlet communicated with the sample storage cavity 31, and the hammer head 2 is detachably connected with the sample outlet. Specifically, as shown in fig. 2, the lower portion of the hammer head 2 is provided with external threads, and the threaded portion has a diameter of 5cm and a height of 1cm to 1.5 cm. Correspondingly, the inner wall of the upper part of the hammer body 3 is also provided with internal threads, and the height of the internal threads is matched with the external threads of the hammer head 2 so as to be detachably connected with the hammer head 2. When the coal petrography sample that stores up the collection in the appearance chamber reaches a certain amount, can be through unscrewing tup 2, the coal petrography sample that will collect shifts away from the appearance mouth, installs tup 2 again to carry out the chisel of next round and get the collection.
Further, as shown in fig. 2 and 5, the chisel head 4 is arc-shaped triangular, the height is 2cm to 3cm, the concave surface of the chisel head 4 faces the sample inlet, and the tip of the chisel head 4 is far away from the sample inlet. Through the inward bending of chisel head, can play the effect of accomodating to the coal petrography sample that the chisel head was dug, make as much as possible coal petrography sample entering store up the appearance chamber.
Furthermore, as shown in fig. 2 and 5, an arc-shaped baffle 6 is further included, the chisel head 4 and the baffle 6 are both connected to the edge of the sample inlet, and the concave surface of the baffle 6 is opposite to the concave surface of the chisel head 4. Specifically, the baffle 6 is an arc plate with a height of 1cm to 2cm, and the radian of the baffle is matched with that of the hammer body 3. In the sampling process, after the chisel head 4 chisels down the coal petrography sample, baffle 6 can prevent that the sample outwards splashes for as few as possible coal petrography sample is excessive and is scattered, and baffle 6 still has certain incurve's radian simultaneously, therefore also plays certain storage effect to the coal petrography sample under the chisel, makes as many as possible coal petrography sample entering storage appearance chamber.
Further, as shown in fig. 1 to 3, a sealing ring 8 is further disposed at the edge of the sample injection cover 5. Because adopt hinge 52 to connect between injection lid 5 and the introduction port, can have certain clearance, utilize sealing washer 8 can further improve the leakproofness of injection lid 5, prevent to store up the sample of appearance chamber 31 and fall out.
Can see through above embodiment, the utility model provides a geological hammer for coal petrography grooving sampling, including hammer block and handle portion, the hammer block includes hammer block, tup and chisel head, and the first end of hammer block is connected in the tup, and the second end of hammer block is connected in the chisel head, can adjust the holistic weight of geological hammer through the tup to provide suitable hitting power, through the chisel head coal petrography in the sampling process, can acquire required coal petrography sample. Simultaneously, through set up the storage appearance chamber in the hammer block, and rotate at the introduction port and be connected with openable into the sample lid, can realize the collection and the storage of coal petrography sample convenient and fast ground. When the chisel head chisels coal rocks, the sample injection cover is subjected to the stamping force of the chiseled coal rock samples towards the sample storage cavity, so that the sample injection cover is opened inwards, and the coal rock samples enter the sample storage cavity from the sample injection port and are collected; when the geological hammer is lifted, sampling is finished, the stamping force disappears, and the sampling cover automatically restores to a closed state. This geological hammer simple structure, convenient to use collects the hammering, cuts a hole and gets and the sample stores in an organic whole, and hammering at every turn can in time collect the sample in the hammer internally, need not to lay the tarpaulin again, and the pollution that causes when having also avoided transferring the sample to the sample bag from the tarpaulin has both improved the efficiency of geological sampling, has saved manpower and time, has reduced the pollution of sampling in-process coal petrography sample again.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. A geological hammer for coal rock grooving sampling comprises a hammer part and a handle part connected to the hammer part, and is characterized in that the hammer part comprises a hammer body, a hammer head for balancing weight and a chisel head for chiseling samples; the first end of the hammer body is connected to the hammer head, and the second end of the hammer body is connected to the chisel head; the hammer body is internally provided with a sample storage cavity, the second end of the hammer body is provided with a sample inlet communicated with the sample storage cavity, and the sample inlet is rotatably connected with a sample injection cover which can be opened and closed.
2. The geological hammer for sampling of coal petrography notches as claimed in claim 1, wherein the sample injection cover comprises a plurality of valves, the connecting ends of the valves are hinged with the sample injection port, and the free ends of the valves are matched with each other to close the sample injection port.
3. The geological hammer for coal petrography groove sampling according to claim 2, wherein the sample injection cover is convertible between a closed configuration and an open configuration, and when the sample injection cover is in the closed configuration, an included angle between a plane in which the sample injection port is located and the valve is 15 ° to 30 °.
4. The geological hammer for sampling a coal petrography scored groove according to claim 2, wherein an elastic member corresponding to the valve one by one is further arranged in the sample storage cavity, one end of the elastic member is connected to the inner wall of the sample storage cavity, and the other end of the elastic member is connected to the valve.
5. The geological hammer for coal petrography groove sampling according to claim 4, wherein the resilient member comprises a coil spring or a leaf spring.
6. the geological hammer for coal petrography grooving sampling as claimed in claim 1, wherein a sample outlet communicated with the sample storage cavity is formed at a first end of the hammer body, and the hammer head is detachably connected to the sample outlet.
7. The geological hammer for sampling a coal petrography nick according to claim 1, wherein the chisel head is arc-shaped triangular, the concave surface of the chisel head faces the sample inlet, and the tip of the chisel head is far away from the sample inlet.
8. the geological hammer for coal petrography groove sampling according to claim 7, further comprising an arc-shaped baffle, wherein the chisel head and the baffle are both connected to the edge of the sample inlet; the concave surface of the baffle is opposite to the concave surface of the chisel head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920475922.6U CN209745587U (en) | 2019-04-09 | 2019-04-09 | Geological hammer for coal rock grooving sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920475922.6U CN209745587U (en) | 2019-04-09 | 2019-04-09 | Geological hammer for coal rock grooving sampling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209745587U true CN209745587U (en) | 2019-12-06 |
Family
ID=68720437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920475922.6U Active CN209745587U (en) | 2019-04-09 | 2019-04-09 | Geological hammer for coal rock grooving sampling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209745587U (en) |
-
2019
- 2019-04-09 CN CN201920475922.6U patent/CN209745587U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214224612U (en) | Soil sampler for environmental geological survey | |
| CN209745587U (en) | Geological hammer for coal rock grooving sampling | |
| CN209745603U (en) | Chisel for coal rock grooving sampling | |
| CN206330497U (en) | Device for filling blast hole | |
| CN215573915U (en) | Surface mine ecological geological environment exploration sampling device | |
| CN112067345B9 (en) | Moon shallow sampling tool with order preserving and packaging functions | |
| CN202946022U (en) | Double-bottom-drum type spiral drill bit | |
| CN207099558U (en) | A kind of convenient shovel of afforestation project | |
| CN211287505U (en) | Protection device of blasting tapping machine for mining machinery | |
| CN201818264U (en) | Coring tool-core claw | |
| CN211819391U (en) | Coal mine electromechanical equipment for coal mining | |
| CN207326892U (en) | A kind of straight handle type electric pick | |
| CN208609339U (en) | A kind of geology uses tool | |
| CN113431611A (en) | Temporary reinforcing and supporting device for coal mine tunnel in coal mining excavation | |
| CN218156933U (en) | Mine geology rock specimen sampling device | |
| CN206034517U (en) | Novel loading machine | |
| CN216991782U (en) | Geological hammer for field operation of mineral geological exploration | |
| CN206780331U (en) | A kind of high portable perforating machine of security performance | |
| CN220302106U (en) | Slag taking device for drilling | |
| CN210460558U (en) | Rechargeable geological rock sampling coring device | |
| CN212417130U (en) | Waste residue collection device for coal mining | |
| CN211389554U (en) | Dust remover for mounting air conditioner | |
| CN216447140U (en) | Coal mine electromechanical equipment for coal mining | |
| CN109015538A (en) | A kind of mining Handle for gadder with shock-absorbing function | |
| CN213421984U (en) | Coal mine excavation blasthole plugging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |