CN216240423U - Tunnel country rock drilling equipment - Google Patents
Tunnel country rock drilling equipment Download PDFInfo
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- CN216240423U CN216240423U CN202122954658.4U CN202122954658U CN216240423U CN 216240423 U CN216240423 U CN 216240423U CN 202122954658 U CN202122954658 U CN 202122954658U CN 216240423 U CN216240423 U CN 216240423U
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- 238000005553 drilling Methods 0.000 title claims abstract description 91
- 239000011435 rock Substances 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims description 33
- 230000008844 regulatory mechanism Effects 0.000 claims 3
- 230000000007 visual effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
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Abstract
A drilling device for surrounding rocks of a roadway belongs to the technical field of roadway construction. The drilling machine comprises a vertical frame, a drilling machine positioning device and a frame positioning device, wherein the drilling machine positioning device is horizontally and transversely matched with the top of the vertical frame in a sliding manner, the frame positioning device is horizontally matched with the left side and the right side of the vertical frame in a threaded manner, and drilling equipment is fixed on the drilling machine positioning device; the vertical frame is arranged in the roadway, and the vertical height of the vertical frame is adjustable. And moving the vertical frame below the position to be drilled, and fixing the vertical frame by using a frame positioning device. Due to the special operation environment of the roadway, the drilling equipment is portable drilling equipment such as a handheld drill and the like. The utility model aims to solve the problem that the drilling position is not accurate enough due to the fact that the existing drilling equipment adopts manual aiming point positioning in the early stage, and the positioning mode is easy to generate visual errors.
Description
Technical Field
The utility model relates to a drilling device for surrounding rock of a roadway, and belongs to the technical field of roadway construction.
Background
In the work progress in tunnel, because the engineering goes on, often need to change the hole to the wall in tunnel, especially special structures such as installation support, the hole of boring in earlier stage need be in same horizontal plane, otherwise influence the installation effect, protective structure such as support is not hard up, endangers life even when serious, current drilling equipment adopts the manual work to aim at a point location in earlier stage more, and this locate mode very easily produces visual error, leads to the drilling position not accurate enough.
Therefore, it is necessary to provide a new drilling device for surrounding rock in a roadway to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The present invention has been developed in order to solve the problems that the prior drilling equipment mostly adopts manual aiming point positioning in the early stage, and the positioning method is easy to generate visual errors, so that the drilling position is not accurate enough, and a brief summary of the present invention is provided below to provide a basic understanding of some aspects of the present invention. It should be understood that this summary is not an exhaustive overview of the utility model. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention.
The technical scheme of the utility model is as follows:
a roadway surrounding rock drilling device comprises a vertical frame, a drilling machine positioning device and a frame positioning device, wherein the drilling machine positioning device is horizontally and transversely matched with the top of the vertical frame in a sliding manner, the frame positioning device is horizontally matched with the left side and the right side of the vertical frame in a threaded manner, and drilling equipment is fixed on the drilling machine positioning device; the vertical frame is arranged in the roadway, and the vertical height of the vertical frame is adjustable. And moving the vertical frame below the position to be drilled, and fixing the vertical frame by using a frame positioning device. Due to the special operation environment of the roadway, the drilling equipment is portable drilling equipment such as a handheld drill and the like.
The frame positioning device comprises a handle, a threaded rod and a sucker, a threaded hole is formed in the side support in a penetrating mode, the threaded rod is in threaded fit with the side support of the vertical frame, the sucker is arranged at one end, close to the outer side of the vertical frame, of the threaded rod, the handle is arranged at one end, close to the inner side of the vertical frame, of the threaded rod, and the handle is rotated to enable the sucker to be tightly attached to the side wall of the roadway.
Preferably: the bottom of the vertical frame is fixedly provided with a horizontal bottom plate, the rear side of the horizontal bottom plate is fixedly provided with a balancing weight, and the weight of the balancing weight is larger than that of the drilling equipment, the drilling machine positioning device and the frame positioning device.
Preferably: and a supporting inclined rod is fixedly arranged between the front side of the horizontal bottom plate and the vertical frame.
Preferably: a plurality of universal wheels are arranged at the bottom of the vertical frame.
In order to solve the problem that the horizontal and transverse position of the drilling equipment can be adjusted, the technical scheme is as follows:
preferably: the vertical frame comprises a door-shaped frame formed by combining two vertical side pillars and a horizontal sliding cross beam, the side pillars can be height-adjustable lifting positioning pillars, if the side pillars comprise an inner pipe, an outer sleeve and a locking bolt, the outer sleeve is sleeved on the outer side of the inner pipe, the locking bolt is in threaded fit with the outer sleeve, and the bottom of the locking bolt is tightly attached to the side wall of the inner pipe.
Preferably: the number of the sliding cross beams is at least two, and the sliding cross beams are arranged in parallel.
In order to solve the problem that the drilling equipment can be adjusted and positioned at different angles under the same plane, the utility model adopts the technical scheme that:
preferably: the drilling machine positioning device comprises a transverse sliding block, a rotation adjusting mechanism and a lifting adjusting mechanism, a sliding groove which is horizontally penetrated in a transverse direction is machined in the transverse sliding block, the sliding groove of the transverse sliding block is in sliding fit with a sliding cross beam, the rotation adjusting mechanism is installed on the front side of the transverse sliding block, the lifting adjusting mechanism is installed on a rotating section of the rotation adjusting mechanism in a matched mode, and drilling equipment is fixedly installed on the lifting adjusting mechanism.
Preferably: the rotary adjusting mechanism comprises a rotating shaft, a ratchet wheel and a locking curved rod, the rotating shaft is rotatably connected with the front side of the transverse sliding block through a rotating bearing, the ratchet wheel is fixedly mounted on the front side of the rotating shaft, the front side of the rotating shaft is in key connection with the ratchet wheel, the front side of the ratchet wheel is fixedly connected with the lifting adjusting mechanism, the front side of the ratchet wheel is in bolt fixed connection with the lifting adjusting mechanism for welding or using, the locking curved rod is rotatably matched and mounted on the front side wall of the transverse sliding block, the tip of the locking curved rod is clamped and matched with the ratchet wheel, the lower end of the tip of the locking curved rod is provided with a baffle, and the baffle is fixedly mounted on the front side wall of the transverse sliding block.
Preferably: the rotary back plate is characterized in that a positioning plate is vertically arranged at the top of the rotary back plate, a positioning through hole is processed in the center of the positioning plate, a plurality of infrared irradiation lamps are arranged around the circumference of the outer side of the positioning through hole, light spots at the irradiation positions of the infrared irradiation lamps are arranged in a circular ring, the center of the circular ring is a position to be drilled, a drill bit of drilling equipment is arranged in the positioning through hole, and the drill bit of the drilling equipment is parallel to the axis of the positioning through hole all the time in the advancing process.
In order to solve the problems that the drilling of the drilling equipment is forwards propelled without being held by hands and the path is stable and not easy to deviate, the technical scheme is as follows:
preferably: lifting adjusting mechanism includes rotatory backplate, the bottom plate, sharp electric putter, mounting panel and slide rail, fixed connection is established with the ratchet front side to the rear side of rotatory backplate, the perpendicular fixed mounting of rotatory backplate lower extreme has the bottom plate, bottom plate top fixed mounting has the sharp electric putter of vertical setting, sharp electric putter's the horizontal fixed cooperation of output is provided with the mounting panel, the left and right sides in rotatory backplate the place ahead all is provided with vertical slide rail, the slide rail inboard is equipped with vertical spout, the mounting panel left and right sides is equipped with the slip arch, the slip arch is established sliding fit with the vertical spout of slide rail and is connected.
The utility model has the following beneficial effects:
1. according to the roadway surrounding rock drilling device, the holes in different directions in the same cross section can be drilled by one-time fixing of the device, the device is suitable for installation of special structures such as supports, installation is more accurate and stable, and risks caused by accidents are reduced;
2. according to the roadway surrounding rock drilling device, manual handheld propulsion is not needed during drilling, so that the force is saved, the drilling path is more stable, and the error is avoided;
3. according to the roadway surrounding rock drilling device, the infrared irradiation lamps are circumferentially arranged on the positioning plate, so that the position to be drilled is conveniently positioned, and the drilling position is more visual;
4. the roadway surrounding rock drilling device is simple in structure, ingenious in design, convenient to disassemble and assemble, firm in assembly and suitable for popularization and use.
Drawings
Fig. 1 is a perspective view of a roadway surrounding rock drilling device;
FIG. 2 is a matched installation diagram of a roadway surrounding rock drilling device;
FIG. 3 is a diagram showing a state of use of the drilling device for surrounding rock in a roadway;
FIG. 4 is a top view of a roadway surrounding rock drilling apparatus;
FIG. 5 is a schematic structural view of a rotation adjusting mechanism of the roadway surrounding rock drilling device;
FIG. 6 is a cross-sectional view A-A of FIG. 5;
in the figure, 1-a vertical frame, 2-a drilling machine positioning device, 3-a frame positioning device, 4-a horizontal bottom plate, 5-a balancing weight, 6-a supporting inclined rod, 7-a universal wheel, 8-a positioning plate, 11-a side support, 12-a sliding beam, 21-a transverse sliding block, 22-a rotation adjusting mechanism, 23-a lifting adjusting mechanism, 31-a handle, 32-a threaded rod, 33-a sucker, 221-a rotating shaft, 222-a ratchet wheel, 223-a locking curved rod, 231-a rotating back plate, 232-a bottom plate, 233-a linear electric push rod, 234-a mounting plate and 235-a sliding rail.
Detailed Description
In order that the objects, aspects and advantages of the utility model will become more apparent, the utility model will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The connection mentioned in the utility model is divided into fixed connection and detachable connection, the fixed connection is non-detachable connection and includes but is not limited to folding edge connection, rivet connection, bonding connection, welding connection and other conventional fixed connection modes, the detachable connection includes but is not limited to threaded connection, snap connection, pin connection, hinge connection and other conventional detachment modes, when the specific connection mode is not clearly limited, at least one connection mode can be found in the existing connection modes by default to realize the function, and the skilled person can select according to the needs. For example: the fixed connection selects welding connection, and the detachable connection selects hinge connection.
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 6, and the roadway surrounding rock drilling device of the embodiment comprises a vertical frame 1, a drilling machine positioning device 2 and a frame positioning device 3, wherein the drilling machine positioning device 2 is horizontally and transversely matched at the top of the vertical frame 1 in a sliding manner, the frame positioning device 3 is horizontally matched on the left side and the right side of the vertical frame 1 in a threaded manner, and drilling equipment is fixed on the drilling machine positioning device 2; the vertical frame is arranged in the roadway, and the vertical height of the vertical frame 1 is adjustable. If the side pillar comprises an inner pipe, an outer sleeve and a locking bolt, the outer sleeve is sleeved on the outer side of the inner pipe, the locking bolt is in threaded fit with the outer sleeve, the bottom of the locking bolt is tightly attached to the side wall of the inner pipe, the vertical frame 1 is moved below a position to be drilled, and the vertical frame is fixed by using a frame positioning device. Due to the special operation environment of the roadway, the drilling equipment is portable drilling equipment such as a handheld drill and the like. The drilling machine positioning device 2 is used for adjusting the drilling direction of the drilling equipment, and the frame positioning device 3 is used for fixing the vertical frame 1, so that when a plurality of holes are drilled, the holes are in a uniform horizontal plane and cannot move.
The frame positioning device 3 comprises a handle 31, a threaded rod 32 and a sucker 33, a through threaded hole is processed in the side support 11, the threaded rod 32 is in threaded fit with the side support 11 of the vertical frame 1, the sucker 33 is arranged at one end, close to the outer side of the vertical frame 1, of the threaded rod 32, the handle 31 is arranged at one end, close to the inner side of the vertical frame 1, of the threaded rod 32, the sucker 33 is tightly attached to the side wall of the roadway, and positioning is achieved by means of friction force.
The vertical frame 1 comprises a door-shaped frame formed by combining two vertical side pillars 11 and a horizontal sliding cross beam 12.
The number of the sliding beams 12 is at least two, and the sliding beams are arranged in parallel. So set up and make the structure more stable, avoid rig positioner 2 to overturn backward from beginning to end and empty, sliding beam 12 can be the smooth square crossbeam in surface or cylindrical crossbeam.
The drilling machine positioning device 2 comprises a transverse sliding block 21, a rotation adjusting mechanism 22 and a lifting adjusting mechanism 23, a sliding groove which is horizontally penetrated in a transverse direction is machined in the transverse sliding block 21, the sliding groove of the transverse sliding block 21 is in sliding fit with the sliding cross beam 12, the rotation adjusting mechanism 22 is installed on the front side of the transverse sliding block 21, the lifting adjusting mechanism 23 is installed on the rotating section of the rotation adjusting mechanism 22 in a matched mode, and drilling equipment is fixedly installed at the lifting output end of the lifting adjusting mechanism 23.
The rotation adjusting mechanism 22 comprises a rotating shaft 221, a ratchet wheel 222 and a locking curved rod 223, the rotating shaft 221 is rotatably connected with the front side of the transverse sliding block 21, the ratchet wheel 222 is fixedly mounted on the front side of the rotating shaft 221, the front side of the ratchet wheel 222 is fixedly connected with the lifting adjusting mechanism 23, the locking curved rod 223 is rotatably mounted on the front side wall of the transverse sliding block 21 in a matched manner, the tip of the locking curved rod 223 is clamped and matched with the ratchet wheel 222, a baffle 224 is arranged at the lower end of the tip of the locking curved rod 223, and the baffle 224 is fixedly mounted on the front side wall of the transverse sliding block 21. The locking curved rod 223 is used for locking the ratchet wheel 222, and the lifting adjusting mechanism 23 realizes the rotation change and the positioning of the angle under the action of the ratchet wheel 222 and the locking curved rod 223.
The more preferable technical scheme is as follows: the lifting adjusting mechanism 23 is a screw rod lifter or a screw rod guide rail slider mechanism with a bottom plate, which are all in the prior art and can realize linear telescopic motion.
A horizontal bottom plate 4 is arranged at the bottom of the vertical frame 1, and a balancing weight 5 is arranged on the rear side of the horizontal bottom plate. The forward tilting and overturning caused by heavy weight of the front side of the device are avoided, and the structure is more stable.
A supporting inclined rod 6 is arranged between the front side of the horizontal bottom plate and the vertical frame 1, so that the connection is more stable.
A plurality of universal wheels 7 are arranged at the bottom of the vertical frame 1, and the vertical frame is convenient to carry.
The rotary back plate 231 top is provided with locating plate 8 perpendicularly, and 8 center departments of locating plate process has positioning hole, has arranged a plurality of infrared radiation lamps around positioning hole outside circumference, and the light spot that the infrared radiation lamp shines the department arranges for the ring, and ring center department is for treating drilling location department, and the drill bit setting of drilling equipment is in positioning hole, and the drilling equipment drill bit is parallel with positioning hole's axle center all the time at the in-process that advances, is convenient for treat the location of drilling position, makes the drilling position more directly perceived.
The roadway surrounding rock drilling device of the embodiment has the following specific use steps:
and 6, after one drilling is finished, adjusting the transverse sliding block 21 to reach the next drilling position, locking the transverse sliding block 21, and repeating the steps 3-5 to finish the drilling work again.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
It should be noted that, in the above embodiments, as long as the technical solutions can be aligned and combined without contradiction, those skilled in the art can exhaust all possibilities according to the mathematical knowledge of the alignment and combination, and therefore, the present invention does not describe the technical solutions after alignment and combination one by one, but it should be understood that the technical solutions after alignment and combination have been disclosed by the present invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a tunnel country rock drilling equipment which characterized in that: the drilling machine comprises a vertical frame (1), a drilling machine positioning device (2) and a frame positioning device (3), wherein the drilling machine positioning device (2) is horizontally and transversely matched with the top of the vertical frame (1) in a sliding manner, the frame positioning device (3) is horizontally matched with the left side and the right side of the vertical frame (1) in a threaded manner, and drilling equipment is fixed on the drilling machine positioning device (2);
the frame positioning device (3) comprises a handle (31), a threaded rod (32) and a sucker (33), the threaded rod (32) is in threaded fit with a side support (11) of the vertical frame (1), the sucker (33) is arranged at one end, close to the outer side of the vertical frame (1), of the threaded rod (32), the handle (31) is arranged at one end, close to the inner side of the vertical frame (1), of the threaded rod (32), and the sucker (33) is tightly attached to the side wall of the roadway.
2. The roadway surrounding rock drilling device according to claim 1, characterized in that: the vertical frame (1) comprises a door-shaped frame formed by combining two vertical side pillars (11) and a horizontal sliding cross beam (12).
3. The roadway surrounding rock drilling device according to claim 2, characterized in that: the number of the sliding cross beams (12) is at least two, and the sliding cross beams are arranged in parallel.
4. The roadway surrounding rock drilling device according to claim 2, characterized in that: rig positioner (2) include horizontal slider (21), rotation regulation mechanism (22) and lifting adjusting mechanism (23), horizontal slider (21) and sliding beam (12) sliding fit, horizontal slider (21) bottom screw-thread fit has the locking double-screw bolt, locking double-screw bolt one end closely laminates with sliding beam (12), rotation regulation mechanism (22) are installed to horizontal slider (21) front side, lifting adjusting mechanism (23) are installed in the rotatory section cooperation of rotation regulation mechanism (22), fixed mounting has drilling equipment on lifting adjusting mechanism (23).
5. The roadway surrounding rock drilling device according to claim 4, wherein: the rotary adjusting mechanism (22) comprises a rotating shaft (221), a ratchet wheel (222) and a locking curved rod (223), the rotating shaft (221) is rotatably connected with the front side of the transverse sliding block (21), the ratchet wheel (222) is fixedly mounted on the front side of the rotating shaft (221), the front side of the ratchet wheel (222) is fixedly connected with the lifting adjusting mechanism (23), the locking curved rod (223) is rotatably mounted on the front side wall of the transverse sliding block (21), the tip of the locking curved rod (223) is clamped and matched with the ratchet wheel (222), a baffle (224) is arranged at the lower end of the tip of the locking curved rod (223), and the baffle (224) is fixedly mounted on the front side wall of the transverse sliding block (21).
6. The roadway surrounding rock drilling device according to claim 5, wherein: lifting adjusting mechanism (23) is including rotatory backplate (231), bottom plate (232), sharp electric putter (233), mounting panel (234) and slide rail (235), fixed connection is established with ratchet (222) front side to the rear side of rotatory backplate (231), bottom plate (232) are installed perpendicularly to rotatory backplate (231) lower extreme, bottom plate (232) top fixed mounting has sharp electric putter (233), the output horizontal cooperation of sharp electric putter (233) is provided with mounting panel (234), the left and right sides in rotatory backplate (231) the place ahead all is provided with vertical slide rail (235), mounting panel (234) left and right sides is equipped with the slip arch, the slip arch is established sliding fit with slide rail (235) and is connected.
7. The roadway surrounding rock drilling device according to claim 6, wherein: the bottom of the vertical frame (1) is provided with a horizontal bottom plate (4), and the rear side of the horizontal bottom plate is provided with a balancing weight (5).
8. The roadway surrounding rock drilling device according to claim 7, wherein: and a supporting inclined rod (6) is arranged between the front side of the horizontal bottom plate and the vertical frame (1).
9. The roadway surrounding rock drilling device according to claim 1, characterized in that: the bottom of the vertical frame (1) is provided with a plurality of universal wheels (7).
10. The roadway surrounding rock drilling device according to claim 6, wherein: rotatory backplate (231) top is provided with locating plate (8) perpendicularly, and locating plate (8) center department processing has a positioning hole, has arranged a plurality of infrared irradiation lamps around positioning hole outside circumference, and drilling equipment's drill bit sets up in the positioning hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122954658.4U CN216240423U (en) | 2021-11-29 | 2021-11-29 | Tunnel country rock drilling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122954658.4U CN216240423U (en) | 2021-11-29 | 2021-11-29 | Tunnel country rock drilling equipment |
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| Publication Number | Publication Date |
|---|---|
| CN216240423U true CN216240423U (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122954658.4U Expired - Fee Related CN216240423U (en) | 2021-11-29 | 2021-11-29 | Tunnel country rock drilling equipment |
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| Country | Link |
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| CN (1) | CN216240423U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506359A (en) * | 2022-09-20 | 2022-12-23 | 安徽宏源电力建设投资有限公司 | Equipment and method for excavation of transmission tower foundation pit in hilly area |
| CN116241179A (en) * | 2023-05-10 | 2023-06-09 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Multi-angle drilling device for tunnel |
-
2021
- 2021-11-29 CN CN202122954658.4U patent/CN216240423U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506359A (en) * | 2022-09-20 | 2022-12-23 | 安徽宏源电力建设投资有限公司 | Equipment and method for excavation of transmission tower foundation pit in hilly area |
| CN116241179A (en) * | 2023-05-10 | 2023-06-09 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Multi-angle drilling device for tunnel |
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Granted publication date: 20220408 |