CN210049844U - Expansion type drill rod conveying assembly for coal mine drilling machine - Google Patents
Expansion type drill rod conveying assembly for coal mine drilling machine Download PDFInfo
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- CN210049844U CN210049844U CN201920947233.0U CN201920947233U CN210049844U CN 210049844 U CN210049844 U CN 210049844U CN 201920947233 U CN201920947233 U CN 201920947233U CN 210049844 U CN210049844 U CN 210049844U
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- 238000005553 drilling Methods 0.000 title claims abstract description 57
- 239000003245 coal Substances 0.000 title claims description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000010276 construction Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 3
- 210000000078 claw Anatomy 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model discloses a dilatation formula is drilling rod transport assembly for colliery rig, including frame subassembly, the walking subassembly of drive chassis subassembly walking, the flash tank that is used for storing the drilling rod and install the baffle on the frame subassembly, the flash tank includes two tank walls that set up relatively, connects a plurality of layers of storage pole board subassemblies between two tank walls, the baffle keeps off in the exit end of flash tank, the storage pole board subassembly inclines downwards towards the baffle side, the flash tank liftable is installed on the frame subassembly in order to adjust the height of each storage pole board subassembly exit end relative baffle; the utility model discloses in carrying the drilling rod in-process, the drilling rod adds the end and snatchs the both sides that the end is located the flash tank with the gripper, has eliminated the potential safety hazard that causes by the manipulator when adding the drilling rod, need not to shut down and adds the drilling rod, has improved the efficiency of construction, and the flash tank has the multilayer and stores up the pole space for the memory space maximize of finite space utilizes, has increased the memory space of drilling rod, has reduced intensity of labour and has improved the efficiency of construction.
Description
Technical Field
The utility model belongs to the technical field of the rig, in particular to dilatation formula is drilling rod transport assembly for coal mine rig.
Background
The drill rod conveying device is an auxiliary device for a coal mine drilling machine, and has the function of conveying drill rods required for drilling to the drilling machine or retrieving withdrawn drill rods in a construction hole;
the patent with publication number CN106761488A discloses a drill rod conveying device for a coal mine drilling machine, which is provided with a box body, wherein the inclination angle of the box body can be adjusted to ensure that the inner drill rod rolls by the self gravity,
the drill rod conveying device has the following defects:
(1) the capacity of an inherent drill rod box of the drilling machine is limited, only a plurality of drill rods can be installed at one time, and after the drill rods in the box are sequentially grabbed by a manipulator, the drill rods need to be frequently supplemented into the drill rod box manually;
(2) because the drill rod box is very close to the manipulator, the potential safety hazard exists when the drilling machine is used for adding the drill rod into the drill rod box, the drilling machine needs to be stopped to add the drill rod, and the construction efficiency is influenced by frequent stopping;
the drill rod conveying assembly for the expansion type coal mine drilling machine is provided aiming at the problems, the device is provided with an expansion box body, the box body adopts a multilayer inclined plane structure, a large number of drill rods can be placed, the drill rods are added without stopping when the drill rods are supplemented, and the construction efficiency and the production takt are improved.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an expansion formula is drilling rod transport assembly for colliery, the device have the dilatation box, and the box adopts multilayer inclined plane structure, can place a large amount of drilling rods, and need not the shut down when replenishing the drilling rod and add the drilling rod, has improved efficiency of construction and production beat.
The utility model discloses an assembly is carried to dilatation formula drilling rod for coal mine drilling machine, walking subassembly, the flash tank that is used for saving the drilling rod including frame subassembly, the drive chassis subassembly walking and install the baffle on the frame subassembly, the flash tank includes two tank walls that set up relatively, connects a plurality of layers between two tank walls and stores up the pole board subassembly, and two tank wall formation are entrance point and exit end respectively at two open ends of level to, the baffle keeps off in the exit end of flash tank, it is downward to store up the slope of pole board subassembly orientation baffle side, the flash tank liftable is installed in order to adjust each height that stores up the relative baffle of pole board subassembly exit end in the frame subassembly.
Further, the rod storage plate component comprises a left rod storage plate and a right rod storage plate which are oppositely arranged on the inner sides of the two box walls, and the upper surfaces of the left rod storage plate and the right rod storage plate are coplanar.
Furthermore, two the tank wall outside is connected with ear seat and uide bushing, be connected with the lift drive that is used for driving the flash tank and goes up and down between ear seat and the frame subassembly, wear to be equipped with the guide post in the uide bushing, the guide post is connected on the frame subassembly.
Further, the rack assembly comprises a base and a sliding plate assembly arranged on the base, the bottoms of the guide columns and the lifting driving device are connected to the sliding plate assembly, and the sliding plate assembly is arranged on the base in a horizontally rotating mode.
Further, the sliding plate component comprises a base plate and an X-direction sliding plate connected to the top of the base plate, the X-direction sliding plate is mounted on the base plate in a mode of sliding in a single degree of freedom in the X direction, and the lifting driving device and the bottom of the guide column are connected to the X-direction sliding plate.
Further, the rack assembly bag also comprises a Y-direction sliding plate positioned between the X-direction sliding plate and the base plate, the Y-direction sliding plate is arranged on the base plate in a Y-direction single-degree-of-freedom sliding mode, and the X-direction sliding plate is arranged on the Y-direction sliding plate in an X-direction single-degree-of-freedom sliding mode.
Furthermore, a plurality of telescopic supporting pieces used for enabling the rack assembly to be overhead to form positioning support are connected around the base plate.
Furthermore, the bottoms of the two box walls are connected into a whole through a reinforcing plate, the tops of the two box walls are connected into a whole through a U-shaped reinforcing piece, and two side edges of the U-shaped reinforcing piece are respectively connected to the inner sides of the two box walls.
Further, the walking assembly is of a crawler-type walking structure.
Furthermore, a plurality of groups of inserting grooves are arranged on the upper portion and the lower portion of the two box walls, and the left rod storage plate and the right rod storage plate are inserted into the corresponding inserting grooves to form detachable connection with the box walls.
The utility model has the advantages that:
the utility model adopts a crawler-type walking structure and is provided with a gyrator, which can adapt to the complex terrain environment in the pit, the walking is convenient, the expansion tank can realize horizontal 360-degree rotation, the bearing plate of the drilling machine can be butted at any angle, the expansion tank can realize the fine adjustment of the horizontal displacement in the X direction and the Y direction through the sliding of the X-direction and Y-direction sliding plates, the accurate butt joint with the bearing plate of the drilling machine can be realized, and the use reliability and the stability of the drill rod conveying device are improved;
the utility model discloses carry the drilling rod in-process, the drilling rod is exported from flash tank exit end, the entrance point at the flash tank can be in step inwards add the drilling rod storing up the higher one end of pole board subassembly promptly, the drilling rod adds the end and snatchs the both sides that the end is located the flash tank with the gripper, the potential safety hazard that causes by the manipulator when adding the drilling rod has been eliminated, need not to stop to add the drilling rod, efficiency of construction and production beat have been improved, the flash tank has the multilayer and stores up the pole space, make the utilization of finite space maximize, the memory space of drilling rod has been increased, reduce the number of times of adding the drilling rod, labor intensity has been reduced and construction efficiency.
Drawings
The invention is further described with reference to the following figures and examples.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is a schematic structural view of a drilling book conveying device;
FIG. 5 is a schematic view of the flash tank of the present invention;
Detailed Description
FIG. 1 is a schematic perspective view of the present invention; FIG. 2 is a schematic front view of the present invention; FIG. 3 is a schematic side view of the present invention; FIG. 4 is a schematic structural view of a drilling book conveying device; FIG. 5 is a schematic view of the flash tank of the present invention;
in this embodiment, the X direction and the Y direction are perpendicular to each other and horizontal, and the Y direction is the forward and backward direction of the drill rod conveying device, i.e., the traveling direction thereof.
As shown in the figure, this embodiment provides a dilatation formula is drilling rod transport assembly for coal mine drilling machine, including frame subassembly 1, the walking subassembly of drive chassis subassembly walking, be used for storing flash tank 2 of drilling rod and install baffle 3 on the frame subassembly, the flash tank includes two tank walls 2a of relative setting, connects a plurality of layers of storage pole board subassembly between two tank walls, and two tank wall formation are entrance point and exit end respectively at two open ends of level to, the baffle keeps off in the exit end of flash tank, it is downward towards baffle side slope to store up the pole board subassembly, the flash tank liftable is installed in order to adjust the height of the relative baffle of each storage pole board subassembly exit end on the frame subassembly.
With reference to fig. 1 to 3, the drill rod conveying device is used with a drilling machine, the drilling machine is provided with a receiving disc 10 and a mechanical claw 11, the receiving disc and the mechanical claw are positioned at one side of the outlet end of the flash tank, the receiving disc is used for receiving a drill rod rolled out from the flash tank 2, and the mechanical claw grabs the drill rod from the receiving disc; the outlet end of the flash tank is provided with a baffle which is not of a plate structure strictly, the baffle can be of a plate structure or a frame structure, the flash tank is of an open structure, when the flash tank is lifted, a drill rod on a rod storage plate assembly higher than the baffle rolls to a bearing disc due to dead weight, the rod storage plate assembly lower than the baffle cannot roll out due to the blocking of the baffle, the flash tank is of an open structure, in the process of conveying the drill rod, the drill rod is output from the outlet end of the flash tank, the drill rod can be synchronously and inwards added at the inlet end of the flash tank, namely the higher end of the rod storage plate assembly, the adding end of the drill rod and the grabbing end of a mechanical claw are positioned at two sides of the flash tank, the potential safety hazard caused by a manipulator when the drill rod is added is eliminated, the drill rod is not required to be added after stopping, the construction efficiency and the production beat are improved, the, the limited space is utilized to the maximum extent, the storage quantity of the drill rods is increased, the number of times of adding the drill rods is reduced, the labor intensity is reduced, the construction efficiency is improved, and the drill rod conveying device can be driven to walk by the walking device, so that the use flexibility is improved;
in this embodiment, the rod storage plate assembly comprises a left rod storage plate 2b and a right rod storage plate 2c which are oppositely arranged on the inner sides of the two box walls, and the upper surfaces of the left rod storage plate and the right rod storage plate are coplanar; as shown in fig. 4 and 5, the inclination angles of the left and right rod storage plates and the horizontal plane are 8 ° to 11 °, preferably 10 °, and the pressure of the drill rod at the bottom of the inclined plane is reduced by controlling the inclination angles, so that the risk of upward emergence of the drill rod is reduced, the distance between two adjacent rod storage plate assemblies can be controlled for further controlling the risk of rod emergence of the drill rod, and the vertical distance between the two rod storage plate assemblies is less than twice the diameter of the drill rod, which is not specifically described again; when the drill rod is installed, the drill rod is erected between the left and right rod storage plates, the material of the rod storage plates can be reduced by the structure, the rod storage plates can be easily detached and connected, a large space is reserved between the left and right rod storage plates, and the left and right rod storage plates and other parts can be conveniently installed.
In this embodiment, the outer sides of the two tank walls 2a are connected with ear seats 4 and guide sleeves 5, a lifting driving device 7 for driving the flash tank to lift is connected between the ear seats and the rack component 1, guide posts 6 penetrate through the guide sleeves, and the guide posts are connected to the rack component; as shown in fig. 4 and 5, the ear base 4 has a hinge hole, the drop driving device 7 is a lifting hydraulic cylinder, an output end of the lifting hydraulic cylinder is hinged to the ear base through a hinge, a base of the lifting hydraulic cylinder is also hinged to the frame assembly through a hinge, or the lifting driving assembly is a lifting structure formed by a screw nut pair matched with a screw driving motor, wherein a screw is connected to the ear base through a screw thread, which is not described in detail; in this embodiment, the outside at two tank walls respectively is provided with two uide bushings, four uide bushings in total, and every uide bushing respectively cooperates a guide post, through the stable lift direction of four guide posts pair flash tanks, this guide post has the direction function except that, also has the effect that drives flash tank lateral shifting, and the quantity and the installation position of uide bushing and guide post can carry out corresponding adjustment according to specific flash tank structure.
In this embodiment, the rack assembly includes a base 1a and a sliding plate assembly mounted on the base, the bottoms of the guide posts 6 and the lifting driving device 7 are connected to the sliding plate assembly, and the sliding plate assembly is mounted on the base in a horizontally rotatable manner; as shown in figure 2, the base is connected with the sliding plate assembly through a rotary seat 12, the rotary seat is driven to rotate through a motor, the rotary seat drives the sliding plate assembly and the flash tank to rotate for 360 degrees, and butt joint of the drill pipe box on a drill machine bearing plate in any angle direction can be achieved.
In this embodiment, the sliding plate assembly includes a base plate 1b and an X-direction sliding plate 1c connected to the top of the base plate 1b, the X-direction sliding plate 1c is mounted on the base plate in a manner of being capable of sliding in an X-direction single degree of freedom, and the bottoms of the lifting drive device 7 and the guide column 6 are connected to the X-direction sliding plate 1 c; in this embodiment, the rack assembly further includes a Y-direction sliding plate 1d located between the X-direction sliding plate and the base plate, the Y-direction sliding plate being mounted on the base plate 1b in a manner of being able to slide in a Y-direction single degree of freedom, and the X-direction sliding plate 1c being mounted on the Y-direction sliding plate 1d in a manner of being able to slide in an X-direction single degree of freedom; referring to fig. 4, four Y-guide blocks 13 are installed on the base plate, two Y-guide blocks 13 are respectively installed at both sides of the Y-guide block 1d in the X direction, a Y-slide groove extending in the Y direction is formed at the inner side of the Y-guide block 13, both sides of the Y-guide block 1d in the X direction are respectively located in the corresponding Y-slide grooves, the Y-guide block is guided by the Y-slide groove to slide along the Y direction with a single degree of freedom, and the remaining degrees of freedom of the Y-guide block are defined by the four Y-guide blocks, the Y-guide block is mounted on the base plate in a space by the Y-guide block to reduce friction when the Y-guide block slides, similarly, four X-guide blocks 14 are installed on the Y-guide block, two X-guide blocks 14 are respectively installed at both sides of the X-guide block 1c in the Y direction, an X-slide groove extending in the X direction is formed at the inner side of the X-guide block 14, both sides of the X-guide block 1c in the Y direction are respectively located, the X-direction sliding plate is guided by the X-direction sliding groove to slide along the X-direction single degree of freedom, and the other degrees of freedom of the X-direction sliding plate are limited by the four X-direction guide blocks; the sliding mode of the structure ensures that the X-direction sliding plate and the Y-direction sliding plate form stable sliding in the respective sliding directions, and the X-direction sliding plate and the Y-direction sliding plate are arranged in an overhead manner, so that mutual interference is avoided, and the friction force during sliding is reduced; the sliding drive of the X-direction sliding plate and the Y-direction sliding plate can be powered by a hydraulic cylinder or a screw-nut pair matched with a driving motor, which is not described in detail; the structure can adjust the displacement of the flash tank 2 in the X direction and the Y direction, and is used for being accurately butted with the bearing disc 10 of the drilling machine, the structure can improve the matching precision of the flash tank 2 and the drilling machine, and the use stability and the reliability of the drill rod conveying device are improved.
In this embodiment, a plurality of telescopic supporting members 8 for making the rack assembly form a positioning support in an overhead manner are connected around the base plate 1 b; as shown in fig. 4, two telescopic supporting members are respectively arranged on the front side and the rear side of the substrate 1b, four telescopic supporting members are close to four corners of the substrate, the number and the installation position of the specific telescopic supporting members can be adjusted correspondingly according to the actual drill rod conveying structure, in the embodiment, the telescopic supporting members select supporting hydraulic cylinders, or can select screw-nut pairs to cooperate with a driving motor, when the telescopic supporting members extend, the telescopic supporting members are supported on the ground, the frame assembly 1, other parts such as a walking assembly are overhead, a stable working environment is provided for the drill rod conveying device, and when the telescopic supporting members are shortened, the walking device is supported on the bottom surface and can drive the frame assembly and other parts to walk.
In the embodiment, the bottoms of the two tank walls 2a are connected into a whole through a reinforcing plate 2d, the tops of the two tank walls are connected into a whole through a U-shaped reinforcing piece 2e, and two side edges of the U-shaped reinforcing piece 2e are respectively connected to the inner sides of the two tank walls; the two side edges of the U-shaped reinforcing piece 2e are positioned above the uppermost rod storage plate assembly, namely, the drill rod is positioned between the uppermost rod storage plate assembly and the U-shaped reinforcing piece, and the up-and-down moving space of the drill rod is limited by adjusting the distance between the two side edges of the U-shaped reinforcing piece and the uppermost rod storage plate assembly, so that the drill rod positioned below the inclined surface of the rod storage plate assembly can be prevented from being extruded by the drill rod above the inclined surface to rise; or an anti-counterfeiting baffle 15 can be arranged above the uppermost rod storage plate assembly, and the anti-counterfeiting baffle prevents the drill rod from being extruded and upward-counterfeiting, which is not specifically described in detail.
In this embodiment, the walking assembly is a crawler-type walking structure 9; the crawler type walking structure comprises a crawler belt, crawler wheels, a crawler belt frame and a driving motor; wherein the athey wheel is rotated and is cooperated on the track frame and rotates through the driving motor drive, the athey wheel is the sprocket drive track and rotates the walking, this track frame can regard as base 1a, perhaps base fixed connection is on the track frame, wherein the track comprises grip-pad, caterpillar track and round pin axle, crawler-type running gear is ripe prior art, specifically does not give unnecessary details, through adaptable complicated topography in the pit of crawler-type running gear and operational environment, improved drilling rod conveyor's application operating mode scope.
In the embodiment, a plurality of groups of inserting grooves 2f are arranged on the upper part and the lower part of the two box walls, and the left rod storage plate 2b and the right rod storage plate 2c are inserted into the corresponding inserting grooves to form detachable connection with the box walls; as shown in the figure, each group of the inserting grooves on the box wall corresponds to one rod storage plate (a left rod storage plate or a right rod storage plate), each group of the inserting grooves comprises two inserting grooves positioned at two sides of the corresponding rod storage plate, the outer end part of the rod storage plate is provided with two convex inserting parts, the two inserting parts are respectively inserted into the two inserting grooves in the same group, or each group of the inserting grooves is one inserting groove which is arranged on the box wall and is matched with the length direction of the rod storage plate, and the rod storage plate is integrally inserted into the inserting grooves; a plurality of inserting grooves are vertically arranged on the box wall, the upper and lower density degrees of the inserting grooves can be adjusted to adapt to the diameter of the drill rod, and the adjacent rod storage plates can be selectively inserted into the corresponding inserting grooves to adjust the distance between the adjacent rod storage plates so as to adapt to the drill rods with different specifications and diameters.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (10)
1. The utility model provides a dilatation formula is drilling rod transport assembly for coal mine drilling machine which characterized in that: including frame subassembly, the walking subassembly of drive chassis subassembly walking, be used for storing the flash tank of drilling rod and install the baffle in the frame subassembly, the flash tank includes relative two tank walls that set up, connects a plurality of layers of storage pole board subassembly between two tank walls, and two tank walls form and are entrance point and exit end respectively at two open ends of level to, the baffle keeps off in the exit end of flash tank, storage pole board subassembly inclines downwards towards the baffle, the flash tank liftable is installed in order to adjust the height of the relative baffle of each storage pole board subassembly exit end in the frame subassembly.
2. The expandable coal mine drilling machine drill pipe conveying assembly according to claim 1, wherein: the rod storage plate component comprises a left rod storage plate and a right rod storage plate which are oppositely arranged on the inner sides of the two box walls, and the upper surfaces of the left rod storage plate and the right rod storage plate are coplanar.
3. The expandable coal mine drilling machine drill pipe conveying assembly according to claim 1, wherein: two the tank wall outside is connected with ear seat and uide bushing, be connected with the lift drive that is used for driving the flash tank and goes up and down between ear seat and the frame subassembly, wear to be equipped with the guide post in the uide bushing, the guide post is connected on the frame subassembly.
4. The expandable coal mine drilling machine drill pipe conveying assembly according to claim 3, wherein: the frame component comprises a base and a sliding plate component arranged on the base, the bottoms of the guide columns and the lifting driving device are connected to the sliding plate component, and the sliding plate component is arranged on the base in a horizontally rotating mode.
5. The expandable coal mine drilling machine drill pipe conveying assembly according to claim 4, wherein: the sliding plate component comprises a base plate and an X-direction sliding plate connected to the top of the base plate, the X-direction sliding plate is arranged on the base plate in a mode of sliding in a single degree of freedom in the X direction, and the bottom of the lifting driving device and the bottom of the guide column are connected to the X-direction sliding plate.
6. The expandable coal mine drilling machine drill pipe conveying assembly according to claim 5, wherein: the rack assembly bag also comprises a Y-direction sliding plate positioned between the X-direction sliding plate and the base plate, the Y-direction sliding plate is arranged on the base plate in a Y-direction single-degree-of-freedom sliding mode, and the X-direction sliding plate is arranged on the Y-direction sliding plate in an X-direction single-degree-of-freedom sliding mode.
7. The expandable coal mine drilling machine drill pipe conveying assembly according to claim 5, wherein: and a plurality of telescopic supporting pieces for making the rack assembly overhead to form positioning support are connected around the base plate.
8. The expandable coal mine drilling machine drill pipe conveying assembly according to claim 1, wherein: the bottom parts of the two box walls are connected into a whole through the reinforcing plate, the top parts of the two box walls are connected into a whole through the U-shaped reinforcing piece, and two side edges of the U-shaped reinforcing piece are respectively connected to the inner sides of the two box walls.
9. The expandable coal mine drilling machine drill pipe conveying assembly according to claim 1, wherein: the walking assembly is of a crawler-type walking structure.
10. The expandable coal mine drilling machine drill pipe conveying assembly according to claim 2, wherein: a plurality of groups of inserting grooves are arranged on the upper portion and the lower portion of the two box walls, and the left rod storage plate and the right rod storage plate are inserted into the corresponding inserting grooves to form detachable connection with the box walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920947233.0U CN210049844U (en) | 2019-06-21 | 2019-06-21 | Expansion type drill rod conveying assembly for coal mine drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920947233.0U CN210049844U (en) | 2019-06-21 | 2019-06-21 | Expansion type drill rod conveying assembly for coal mine drilling machine |
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| Publication Number | Publication Date |
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| CN210049844U true CN210049844U (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920947233.0U Active CN210049844U (en) | 2019-06-21 | 2019-06-21 | Expansion type drill rod conveying assembly for coal mine drilling machine |
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| CN (1) | CN210049844U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107232A (en) * | 2019-06-21 | 2019-08-09 | 中煤科工集团重庆研究院有限公司 | Drill rod conveying device for expansion type coal mine drilling machine |
| CN112855047A (en) * | 2021-01-22 | 2021-05-28 | 任伟 | Deep-buried punching auxiliary equipment for ground source heat pump |
| CN113236153A (en) * | 2021-06-29 | 2021-08-10 | 中煤科工集团重庆研究院有限公司 | Automatic width-adjusting drill pipe box |
-
2019
- 2019-06-21 CN CN201920947233.0U patent/CN210049844U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107232A (en) * | 2019-06-21 | 2019-08-09 | 中煤科工集团重庆研究院有限公司 | Drill rod conveying device for expansion type coal mine drilling machine |
| CN112855047A (en) * | 2021-01-22 | 2021-05-28 | 任伟 | Deep-buried punching auxiliary equipment for ground source heat pump |
| CN113236153A (en) * | 2021-06-29 | 2021-08-10 | 中煤科工集团重庆研究院有限公司 | Automatic width-adjusting drill pipe box |
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