CN112324327A - Bored concrete pile drilling equipment is used in road bridge roof beam construction - Google Patents
Bored concrete pile drilling equipment is used in road bridge roof beam construction Download PDFInfo
- Publication number
- CN112324327A CN112324327A CN202011188248.7A CN202011188248A CN112324327A CN 112324327 A CN112324327 A CN 112324327A CN 202011188248 A CN202011188248 A CN 202011188248A CN 112324327 A CN112324327 A CN 112324327A
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- drilling
- driving
- road
- bridge construction
- concrete pile
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- 238000005553 drilling Methods 0.000 title claims abstract description 118
- 238000010276 construction Methods 0.000 title claims abstract description 29
- 239000004567 concrete Substances 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000005192 partition Methods 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 2
- 239000002689 soil Substances 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 9
- 230000033001 locomotion Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009189 diving Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/081—Screw-and-nut feed mechanisms
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of bridge construction, and discloses a bored concrete pile drilling device for road and bridge construction, which comprises a movable bottom plate, wherein a support frame is arranged on the right side of the upper end of the movable bottom plate, a rotary lead screw is arranged between the upper part and the lower part of the support frame, a lifting block is arranged in the middle of the rotary lead screw through a threaded structure, a driving box is arranged at the right end of the lifting block, a partition plate is arranged in the driving box, a driving cylinder is arranged in the middle of the left side of the partition plate through a bearing, a driving gear is arranged in the middle of the upper end of the driving cylinder, a driven gear is meshed with the right end of the driving gear, a transmission shaft is arranged in the middle of the upper end of the transmission shaft, a transmission groove is formed in the outer side of. According to the invention, the movement of the drilling shaft and the drilling cylinder in opposite directions is realized, so that the rapid drilling effect of the cast-in-place pile in the bridge construction process is realized, and the slag soil can be discharged more rapidly and effectively.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a bored concrete pile drilling device for road and bridge construction.
Background
The road and bridge is generally composed of a plurality of parts such as a roadbed, a road surface, a bridge, a tunnel engineering facility, a traffic engineering facility and the like. When the road and bridge beam is constructed, a drilling device is used for drilling holes, then a cast-in-place pile is manufactured, and the cast-in-place pile is a pile manufactured by forming holes in place and pouring concrete or reinforced concrete. Commonly used are: (1) drilling a cast-in-place pile: the pile is formed by using a spiral drilling machine, a diving drilling machine and the like to form holes on site and pouring concrete, and the construction has no vibration and does not squeeze soil, but the settlement amount of the pile is slightly larger. The auger drilling machine is suitable for cohesive soil, sandy soil, artificial filling and the like above the ground water level, drilled soil blocks ascend along spiral blades on a drill rod to the outside of a discharge hole, the aperture is about 300mm, the drilling depth is 8-12 m, and the drill rod is selected according to soil quality and water content. The submersible drilling machine is suitable for cohesive soil, sandy soil, silt, mucky soil and the like, and is particularly suitable for forming holes in soil layers with higher underground water level. The mud is used for protecting the wall in order to prevent the hole from collapsing when drilling. Drilling in clay with clean water to form mud protecting wall, and drilling in sandy soil with prepared mud. And circularly removing drilled soil scraps by using slurry, and cleaning the hole after drilling to the required depth to remove the soil scraps sinking at the bottom of the hole so as to reduce the sedimentation of the pile. Commonly used are: (1) drilling a cast-in-place pile: using a spiral drilling machine, a diving drilling machine and the like to form holes on site and pour concrete to form piles, wherein no vibration and no soil squeezing are generated during construction, but the settlement amount of the piles is slightly larger; (2) sinking a pipe and pouring a pile: the steel pipe with reinforced concrete pile shoe or valve type pile shoe is sunk into the soil by hammering or vibration, then the concrete is poured and the pipe is pulled out simultaneously to form the pile.
Due to the fact that various components in the soil are mixed, particularly hard substances, the density and the stress capacity of each position are different, during drilling, a drill bit can incline due to unbalanced horizontal plane stress, drilled holes are unqualified, and construction is affected; in addition, after drilling is completed, when the drill bit is taken out, a large amount of impurities fall to the bottom of the drilled hole, and during filling, the large amount of impurities can enter the filling column, so that the performance of the filling column is seriously influenced.
Chinese patent (publication number: CN 211522910U) discloses a bored concrete pile drilling device for road and bridge construction, which comprises a fixed frame, a roll-over stand and a rotating plate, wherein the left side of the rotating plate is rotatably connected to the fixed frame through the roll-over stand, so that the rotating plate can be horizontally arranged above the fixed frame and can also be vertically arranged outside the fixed frame after being turned over for 90 degrees.
Disclosure of Invention
The invention aims to provide a bored concrete pile drilling device for road and bridge construction, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a bored concrete pile drilling device for road and bridge construction comprises a movable bottom plate, wherein a support frame is arranged on the right side of the upper end of the movable bottom plate, a rotary lead screw is arranged between the upper part and the lower part of the support frame, a lifting block is arranged in the middle of the rotary lead screw through a threaded structure, a driving box is arranged at the right end of the lifting block, a partition plate is arranged inside the driving box, a driving cylinder is arranged in the middle of the left side of the partition plate through a bearing, a driving gear is arranged in the middle of the upper end of the driving cylinder, a driven gear is meshed with the right end of the driving gear, a driving shaft is arranged in the middle of the driven gear, a driving cylinder is arranged in the middle of the upper end of the driving shaft, a transmission ball is arranged inside the transmission groove, a limiting frame is arranged in the middle of the transmission ball, an L-shaped frame is arranged, a drilling gear is installed at the upper end of the drilling barrel, a gear set is meshed at the right end of the drilling gear and connected to the bottom of the transmission shaft, and the lower end of the drilling shaft penetrates through the upper end of the drilling barrel and the tail of the drilling barrel to exceed the outer side of the bottom of the drilling barrel.
As a further scheme of the invention: the two sides of the lower end of the movable bottom plate are provided with movable wheels, and a reinforcing plate is arranged between the upper end of the movable bottom plate and the supporting frame.
As a further scheme of the invention: the top end of the rotary lead screw penetrates through the supporting frame and is connected with a rotary motor.
As a further scheme of the invention: the upper end of the driving cylinder is connected with an output shaft of a driving motor, and the driving motor is fixed at the upper end of the supporting frame.
As a further scheme of the invention: the outer side of the drilling shaft positioned in the drilling barrel is provided with a plurality of drilling spirals, and the outer side of the upper end of the drilling barrel is provided with a slag discharge groove.
As a further scheme of the invention: the middle part of the limiting frame is provided with a fixing frame in a sliding mode, and the fixing frame is fixed between the top end inside the driving box and the partition plate.
As a further scheme of the invention: the inside fixture block that is equipped with of drive cylinder lower extreme, drilling axle upper end is equipped with the draw-in groove of mutually supporting with the fixture block.
As a further scheme of the invention: the rotating motor is a double-steering stepping motor.
As a further scheme of the invention: and a drilling groove matched with the drilling shaft is formed in the middle of the upper end of the drilling gear.
As a still further scheme of the invention: the upper end and the lower end of the transmission shaft are respectively and rotatably arranged on the inner wall of the driving box.
Compared with the prior art, the invention has the beneficial effects that:
the utility model provides a road and bridge is bored concrete pile drilling equipment for construction, rational in infrastructure, the modern design through transmission section of thick bamboo and a plurality of gear that is equipped with, has realized the motion of drilling axle and the opposite direction of a drilling section of thick bamboo, and then makes the quick drilling effect of bored concrete pile in the bridge work progress, has ensured that dregs can more quick effectual discharge, greatly increased drilling efficiency and drilling effect, the practicality is strong, the reliability is high.
Drawings
Fig. 1 is a schematic structural diagram of a bored concrete pile drilling device for road and bridge construction.
Fig. 2 is a schematic view of the internal structure of a driving box in a bored concrete pile drilling device for road and bridge construction.
Fig. 3 is a schematic sectional structure view of a-a in fig. 2.
Fig. 4 is a schematic perspective view of a drilling barrel in a bored concrete pile drilling device for road and bridge construction.
In the figure: 1-supporting frame, 2-reinforcing plate, 3-moving bottom plate, 4-moving wheel, 5-rotating screw rod, 6-lifting block, 7-rotating motor, 8-driving motor, 9-driving box, 10-drilling barrel, 11-slag discharge groove, 12-drilling shaft, 13-drilling screw, 14-driving barrel, 15-driving gear, 16-driven gear, 17-lifting sleeve, 18-drilling gear, 19-gear set, 20-driving shaft, 21-L-shaped frame, 22-driving barrel, 23-driving groove, 24-driving ball, 25-limiting frame, 26-fixing frame, 27-partition plate, 28-clamping block and 29-clamping groove.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the invention, and further, the terms "first", "second", etc., are used only for descriptive purposes and are not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated, whereby the features defined as "first", "second", etc., may explicitly or implicitly include one or more of such features, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, and the two elements may be communicated with each other, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to fig. 1 to 4, in the embodiment of the invention, a bored concrete pile drilling device for road and bridge construction comprises a movable bottom plate 3, movable wheels 4 are installed on two sides of the lower end of the movable bottom plate 3 for realizing the movement of the whole device, a reinforcing plate 2 is installed between the upper end of the movable bottom plate 3 and a support frame 1, so as to ensure the stable fixing acting force between the movable bottom plate 3 and the support frame 1, the support frame 1 is installed on the right side of the upper end of the movable bottom plate 3, a rotary lead screw 5 is installed between the upper portion and the lower portion of the support frame 1, the top end of the rotary lead screw 5 penetrates through the support frame 1 and is connected with a rotary motor 7, the rotary motor 7 is a double-direction stepping motor, so as to realize the movement of the rotary lead screw 5 in two directions, so as to ensure the movement of a lifting block 6 in two directions, the lifting block 6 is installed in the middle of the rotary lead screw 5 through a thread, the right end of the lifting block 6 is provided with a driving box 9, a partition plate 27 is arranged in the driving box 9, the middle part of the left side of the partition plate 27 is provided with a driving cylinder 14 through a bearing, the upper end of the driving cylinder 14 is connected with an output shaft of a driving motor 8 for driving the driving cylinder 14 to rotate, the driving motor 8 is fixed at the upper end of the supporting frame 1, a clamping block 28 is arranged in the lower end of the driving cylinder 14, the upper end of the drilling shaft 12 is provided with a clamping groove 27 matched with the clamping block 28, so that the drilling shaft 12 cannot influence the rotating action in the up-and-down moving process, the middle part of the upper end of the driving cylinder 14 is provided with a driving gear 15, the right end of the driving gear 15 is engaged with a driven gear 16, the middle part of the driven gear 16 is provided with a transmission shaft 20, the upper end and the lower end of the transmission shaft, the middle part of the driving ball 24 is provided with a limiting frame 25, the middle part of the limiting frame 25 is provided with a fixing frame 26 in a sliding manner, the limiting frame 25 is limited by the up-and-down movement, the up-and-down movement is avoided, the fixing frame 26 is fixed between the top end inside the driving box 9 and the partition plate 27, the right end of the limiting frame 25 is provided with an L-shaped frame 21, the bottom of the L-shaped frame 21 is provided with a lifting sleeve 17, the middle part of the lifting sleeve 17 is provided with a drilling shaft 12, the upper end of the drilling shaft 12 is in clamping fit with a driving cylinder 14, the middle part of the lower end of the driving box 9 is provided with a drilling cylinder 10 through a bearing, the outer side of the drilling shaft 12 inside the drilling cylinder 10 is provided with a plurality of drilling screws 13 for realizing the drilling and deslagging effect on soil, the outer side of the upper end of the drilling cylinder 10 is provided with a deslagging groove 11, the discharge, the lower end of the drilling shaft 12 penetrates through the upper end of the drilling barrel 10, and the tail part of the drilling shaft exceeds the outer side of the bottom of the drilling barrel 10, so that the drilling effect is further improved.
Example 2
In another embodiment of the present invention, the embodiment is different from the above-mentioned embodiment in that the drilling gear 18 is provided with a drilling groove at the middle of the upper end thereof for cooperating with the drilling shaft 12, thereby preventing the drilling shaft 12 from interfering with the drilling gear 18 during the drilling process.
During working, the whole device is moved to a place needing filling through the moving wheel 4, then the rotating motor 7 is started, the lifting block 6 drives the whole driving box 9 to move up and down, the bottom of the drilling shaft 12 is contacted with the ground needing drilling, then the driving motor 8 is started, the driving motor 8 drives the driving shaft 14 to rotate, the drilling shaft 12 rotates synchronously, meanwhile, under the action of the transmission cylinder 22, the lifting sleeve 17 drives the rotating drilling shaft 12 to rotate and move up and down simultaneously, and under the action of the gear set 19, the drilling cylinder 10 and the drilling shaft 12 rotate in opposite directions, so that the rapid drilling effect is realized, soil can be discharged rapidly, and the drilling effect is improved. The invention has reasonable structure and novel design, realizes the movement of the drilling shaft 12 and the drilling cylinder 10 in opposite directions through the transmission cylinder 22 and the gears, further ensures the rapid drilling effect of the cast-in-place pile in the bridge construction process, ensures that the muck can be discharged more rapidly and effectively, greatly increases the drilling efficiency and the drilling effect, and has strong practicability and high reliability.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A bored concrete pile drilling device for road and bridge construction comprises a movable bottom plate (3), wherein a support frame (1) is installed on the right side of the upper end of the movable bottom plate (3), and is characterized in that a rotary lead screw (5) is installed between the upper portion and the lower portion of the support frame (1), a lifting block (6) is installed in the middle of the rotary lead screw (5) through a threaded structure, a driving box (9) is installed at the right end of the lifting block (6), a partition plate (27) is installed inside the driving box (9), a driving cylinder (14) is installed in the middle of the left side of the partition plate (27) through a bearing, a driving gear (15) is installed in the middle of the upper end of the driving cylinder (14), a driven gear (16) is meshed at the right end of the driving gear (15), a transmission shaft (20) is installed in the middle of the driven gear (16), a transmission cylinder (22, drive ball (24) mid-mounting spacing (25), spacing (25) right-hand member installation L type frame (21), L type frame (21) bottom installation lift cover (17), lift cover (17) mid-mounting drilling axle (12), the cooperation of drilling axle (12) upper end joint has a driving cylinder, a drilling section of thick bamboo (10) is installed through the bearing in drive case (9) lower extreme middle part, and drilling gear (18) are installed to a drilling section of thick bamboo (10) upper end, and the meshing of drilling gear (18) right-hand member has gear train (19), and gear train (19) are connected in transmission shaft (20) bottom, drilling axle (12) lower extreme passes a drilling section of thick bamboo (10) upper end and afterbody and surpasss a drilling section of thick bamboo (10) bottom outside.
2. The bored concrete pile drilling device for road and bridge construction according to claim 1, wherein the movable wheels (4) are installed on both sides of the lower end of the movable bottom plate (3), and the reinforcing plate (2) is installed between the upper end of the movable bottom plate (3) and the support frame (1).
3. The bored concrete pile drilling device for road and bridge construction according to claim 1, wherein the top end of the rotary screw (5) is connected with a rotary motor (7) through the support frame (1).
4. The bored concrete pile drilling device for road and bridge construction according to claim 1, wherein an output shaft of a driving motor (8) is connected to the upper end of the driving cylinder (14), and the driving motor (8) is fixed to the upper end of the supporting frame (1).
5. The bored concrete pile drilling device for road and bridge construction according to claim 1 or 4, wherein a plurality of drilling spirals (13) are installed outside the drilling shaft (12) inside the drilling cylinder (10), and a slag discharge groove (11) is formed outside the upper end of the drilling cylinder (10).
6. The bored concrete pile drilling device for road and bridge construction according to claim 1, wherein a fixing frame (26) is slidably disposed in the middle of the limiting frame (25), and the fixing frame (26) is fixed between the top end inside the driving box (9) and the partition plate (27).
7. The bored concrete pile drilling device for road and bridge construction according to claim 6, wherein a block (28) is provided inside the lower end of the driving cylinder (14), and a slot (27) cooperating with the block (28) is provided at the upper end of the drilling shaft (12).
8. The bored concrete pile drilling device for road and bridge construction according to claim 3, wherein the rotating motor (7) is a double-steering stepping motor.
9. The bored pile drilling device for road and bridge construction according to claim 1, wherein the drilling gear (18) is provided with a drilling groove at an upper middle portion thereof to be engaged with the drilling shaft (12).
10. The bored concrete pile drilling device for road and bridge construction according to claim 1 or 9, wherein the upper and lower ends of the transmission shaft (20) are rotatably disposed on the inner wall of the driving box (9), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011188248.7A CN112324327A (en) | 2020-10-30 | 2020-10-30 | Bored concrete pile drilling equipment is used in road bridge roof beam construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011188248.7A CN112324327A (en) | 2020-10-30 | 2020-10-30 | Bored concrete pile drilling equipment is used in road bridge roof beam construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112324327A true CN112324327A (en) | 2021-02-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011188248.7A Withdrawn CN112324327A (en) | 2020-10-30 | 2020-10-30 | Bored concrete pile drilling equipment is used in road bridge roof beam construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112324327A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086541A (en) * | 2021-07-21 | 2022-02-25 | 浙江吴浙建设有限公司 | Highway engineering bridge drilling bored concrete pile device |
| CN117166912A (en) * | 2023-11-03 | 2023-12-05 | 合肥工大共达工程检测试验有限公司 | Bridge pile foundation drilling equipment |
-
2020
- 2020-10-30 CN CN202011188248.7A patent/CN112324327A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086541A (en) * | 2021-07-21 | 2022-02-25 | 浙江吴浙建设有限公司 | Highway engineering bridge drilling bored concrete pile device |
| CN117166912A (en) * | 2023-11-03 | 2023-12-05 | 合肥工大共达工程检测试验有限公司 | Bridge pile foundation drilling equipment |
| CN117166912B (en) * | 2023-11-03 | 2024-02-13 | 合肥工大共达工程检测试验有限公司 | Bridge pile foundation drilling equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20210205 |