CN114775608A - Pile driver positioning device for civil engineering and positioning method thereof - Google Patents
Pile driver positioning device for civil engineering and positioning method thereof Download PDFInfo
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- CN114775608A CN114775608A CN202210435924.9A CN202210435924A CN114775608A CN 114775608 A CN114775608 A CN 114775608A CN 202210435924 A CN202210435924 A CN 202210435924A CN 114775608 A CN114775608 A CN 114775608A
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- pile driver
- pile
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a pile driver positioning device for civil engineering and a positioning method thereof, and belongs to the technical field of civil engineering.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a pile driver positioning device for civil engineering and a positioning method thereof.
Background
The pile driver consists of a pile hammer, a pile frame and accessory equipment, wherein the pile hammer is attached between two parallel vertical guide rods (commonly called a gantry) at the front part of the pile frame and is lifted by a lifting hook, the pile frame is a steel structure tower frame, a winch is arranged at the rear part of the pile frame and is used for lifting the pile and the pile hammer, and a guide frame consisting of two guide rods is arranged in front of the pile frame and is used for controlling the pile driving direction so that the pile can accurately penetrate into the stratum according to the designed direction.
Present pile driver needs the manual work to carry out the direction of stabilizing at the in-process that uses to the staff's the amount of labour has been increased to a certain extent, and the staff is when controlling the pile driver pile simultaneously, and the stake pole takes place crooked easily and makes the pile produce the error, therefore we need a pile driver positioner for civil engineering, solve present pile driver and need the manual work to carry out the direction of stabilizing at the in-process that uses, the staff is controlling the easy problem that produces position error of stake pole when the pile driver pile.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a pile driver positioning apparatus for civil engineering and a positioning method thereof, which can stably move a pile driver body without artificially stabilizing a direction, prevent the body from shaking during movement, and improve the accuracy of pile driving.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problem is as follows: pile driver positioner for civil engineering, including supporting platform, supporting platform's both sides are provided with the curb plate respectively relatively, sliding connection has flexible hold-down mechanism about the inboard of curb plate, and two flexible hold-down mechanisms compress tightly the location with the pile driver organism, the output of pile driver organism is connected with the stake pole, last being provided with of supporting platform will the vertical guiding orientation's of stake pole adjustment mechanism.
The inner side of the side plate is provided with a vertical sliding groove along the vertical direction, the top of the vertical sliding groove is detachably connected with a stop block, and a sliding block is connected in the vertical sliding groove in a sliding mode and connected with the telescopic pressing mechanism through the sliding block.
The telescopic pressing mechanism comprises a plurality of horizontal telescopic rods in sliding connection with the side plates, the telescopic ends of the horizontal telescopic rods are connected with the vertical pressing plate, the upper end of the vertical pressing plate is in sliding connection with the pile driver body, and the two vertical pressing plates tightly hold the pile driver body and then are fastened and connected.
The upper end of the vertical pressing plate is provided with a horizontal sliding groove along the length direction of the vertical pressing plate, strip-shaped support legs in sliding fit with the horizontal sliding groove are welded on two sides of the upper part of the pile driver body respectively, and a sealing plate is detachably connected to the port of the horizontal sliding groove; the outer end of the pile driver body is provided with a handle convenient to slide.
The inner side of the vertical pressing plate is provided with a protective pad which is abutted to the pile driver body, the inner side of the lower portion of the vertical pressing plate is fixedly provided with a baffle for supporting the pile driver body, and the two vertical pressing plates are detachably connected through a bolt assembly.
The output end of the pile driver body is provided with an internal thread cylinder section, the internal thread of the internal thread cylinder section is connected with a sleeve, and the pile rod is inserted and positioned in the sleeve.
The utility model discloses a pile pole, including mounting hole, adjusting mechanism, pneumatic cylinder I, supporting platform, last with the relative position department of stake pole is provided with the mounting hole, adjusting mechanism includes butt welding's two connecting blocks on the inner wall of mounting hole, every follow on the connecting block the radial welded fastening of mounting hole has pneumatic cylinder I, the welding has the arc on the piston rod of pneumatic cylinder I, and two arc symmetries set up and the cladding are in the periphery of stake pole.
The supporting platform is provided with a storage box for placing installation parts, the storage box comprises a box body with an opening on one side, a partition board is fixed in the box body, one side, close to the fit opening, of the partition board is connected with a protection board, and the opening of the box body is hinged with a box door with a lock.
The supporting platform comprises a bottom plate, the side plates are fixed on the bottom plate, crawler structures are installed on two side edges of the bottom plate, connecting plates are fixed at two ends of the bottom plate respectively, the lower ends of the connecting plates are connected with supporting plates through a plurality of hydraulic cylinders II, and the supporting plates are in contact with the ground.
A method for positioning a pile driver for civil engineering works by using the positioning device comprises the following steps:
step 1: the pile driver body is stably positioned, so that the up-and-down moving stability of the pile driver body is ensured;
step 2: installing a pile rod and guiding and positioning the pile rod;
and 3, step 3: the pile driver body is moved to the pile driving position for pile driving operation.
The invention has the beneficial effects that:
1. according to the pile driver positioning device, the pile driver body can be pressed and positioned through the telescopic pressing mechanism, when the pile driver performs pile driving operation, the pile driver body moves up and down along the two side plates along with the telescopic pressing mechanism, the pile rod at the output end of the pile driver body vertically guides and moves under the action of the adjusting mechanism, the pile driver body can stably move without manually stabilizing the direction during the whole pile driving operation, the phenomenon that the pile driver body shakes during the movement process is avoided, and the pile driving accuracy is improved.
2. According to the pile driver, the sleeve is connected with the output end of the pile driver body in a threaded manner, the pile rod is inserted and positioned in the sleeve, the sleeve with the corresponding aperture can be selected according to the size of the required pile rod and is rotatably arranged at the output end of the pile driver body, the installation is convenient and rapid, a worker is prevented from replacing the pile driver for multiple times to a certain extent, and the use cost of a construction site during pile driving is reduced to a certain extent.
3. According to the invention, the mounting hole is formed in the position, opposite to the pile rod, of the supporting platform, the hydraulic cylinder I is fixed at the opposite position on the inner wall of the mounting hole, the arc-shaped plate is connected to the piston rod of the hydraulic cylinder I, the extending distance of the piston rods of the two hydraulic cylinders I can be adjusted according to the size of the pile rod, so that the two arc-shaped plates are adaptive to the pile rod, the pile rod is prevented from shaking to a certain extent, and the fixing device for replacing the pile rod for multiple times due to different sizes of the pile rod is avoided.
To sum up, this pile driver positioner for civil engineering commonality is strong, is applicable to the guiding orientation of the stake pole of multiple size, need not artifical stable direction and can makes the pile driver organism remove steadily, has avoided the in-process production of organism removal to rock, has improved the precision of piling.
Drawings
The contents of the various figures of the present specification and the labels in the figures are briefly described as follows:
FIG. 1 is a schematic front view of a pile driver according to the present invention;
FIG. 2 is a schematic side view of the pile driver of the present invention;
FIG. 3 is a schematic top view of the pile driver of the present invention;
FIG. 4 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;
FIG. 5 is an enlarged view of the invention at B in FIG. 3;
FIG. 6 is a schematic view of the structure of the connection structure in the pile driver of the present invention;
the labels in the above figures are: 1. a supporting platform, 1-1 bottom plate, 1-2 crawler belt structure, 1-3 connecting plate, 1-4 hydraulic cylinder II, 1-5 supporting plate, 2 side plate, 2-1 vertical chute, 3 telescopic pressing mechanism, 3-1 horizontal telescopic rod, 3-2 vertical pressing plate, 3-3 horizontal chute, 3-4 protective pad, 3-5 baffle, 3-6 bolt component, 4 pile driver body, 5 pile rod, 6 adjusting mechanism, 6-1 connecting block, 6-2 hydraulic cylinder I, 6-3 arc plate, 7 baffle, 8 slider, 9 bar-shaped support leg, 10 handle, 11 internal thread section, 12 sleeve, 13 mounting hole, 14 storage box, 14-1 box, 14-2 baffle, 14-3 parts of a protection plate, and 14-4 parts of a box door.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
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 and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
The specific implementation scheme of the invention is as follows: as shown in fig. 1-3, a pile driver positioner for civil engineering, including supporting platform 1, supporting platform 1's both sides are provided with curb plate 2 respectively relatively, sliding connection has flexible hold-down mechanism 3 about the inboard of curb plate 2, two flexible hold-down mechanism 3 compress tightly the location with pile driver organism 4, the output of pile driver organism 4 is connected with stake pole 5, supporting platform 1 is last to be provided with the adjustment mechanism 6 with the vertical guiding orientation of stake pole 5, make whole pile driving operation need not artifical steady direction and can make pile driver organism 4 steady movement, avoided the organism to remove the in-process to produce and rock, the precision of pile has been improved.
Specifically, as shown in fig. 4, a vertical chute 2-1 is vertically arranged on the inner side of the side plate 2, the top section of the vertical chute 2-1 is L-shaped, after the top of the vertical chute 2-1 is clamped into the stopper 7, a threaded hole is formed in one side of the vertical chute 2-1, a threaded blind hole is formed in a position, opposite to the threaded hole, of the stopper 7, the stopper 7 is fixed on the side plate 2 through a screw, a slider 8 is slidably connected in the vertical chute 2-1 and connected with the telescopic pressing mechanism 3 through the slider 8, and the detachable mounting structure of the stopper 7 prevents the slider 8 from sliding out of the vertical chute 2-1 when the pile driver body 4 moves, and facilitates mounting and dismounting of the telescopic pressing mechanism 3.
Specifically, the telescopic pressing mechanism 3 comprises a plurality of horizontal telescopic rods 3-1 which are slidably connected with the side plate 2, the telescopic ends of the horizontal telescopic rods 3-1 are connected with the vertical pressing plates 3-2, and the two vertical pressing plates 3-2 can tightly hold the pile driver body 4 after being tightly connected through the bolt assemblies 3-6, so that the problem that the pile driver body 4 shakes due to a gap between the pile driver body 4 and the vertical pressing plates 3-2 is solved.
In order to avoid damage to the pile driver body 4 caused by the fact that the vertical pressing plate 3-2 directly extrudes the pile driver body 4, the protective pad 3-4 which is abutted to the pile driver body 4 is arranged on the inner side of the vertical pressing plate 3-2, the protective pad 3-4 can be arranged to be a rubber pad, and the protective pad is arranged on the vertical pressing plate 3-2 in a sticking mode, so that extrusion force of the vertical pressing plate 3-2 to the pile driver body 4 can be reduced, and the service life of the pile driver is prolonged. In order to avoid the pile driver body 4 from being separated from the vertical pressing plate 3-2 in the downward moving process, a baffle 3-5 for supporting the pile driver body 4 is fixed on the inner side of the lower part of the vertical pressing plate 3-2.
The upper end of the vertical pressing plate 3-2 is connected with the pile driver body 4 in a sliding manner, and the concrete structure is as follows: the upper end of the vertical pressing plate 3-2 is provided with a horizontal chute 3-3 along the length direction, strip-shaped support legs 9 in sliding fit with the horizontal chute 3-3 are welded on two sides of the upper portion of the pile driver body 4 respectively, a sealing plate (not shown) is detachably connected to a port of the horizontal chute 3-3, a handle 10 convenient to slide is arranged at the outer end of the pile driver body 4, the pile driver body 4 can be conveniently and slidably mounted in the horizontal chute 3-3 through holding the handle 10, and the sealing plate is fixed to the port of the horizontal chute 3-3, so that preliminary positioning of the pile driver body 4 is completed.
Specifically, as shown in fig. 6, the output of pile driver organism 4 therein is provided with internal thread section 11, internal thread section 11 internal thread connection has sleeve 12, peg 5 has been located in the sleeve 12 interpolation, the accessible screw is installed in the circumference of sleeve 12 in order to fix a position pile pole 5 stably, sleeve 12 that can select corresponding aperture according to the size of pile pole 5 as required is rotatory to be installed at the output of pile driver organism 4, simple to operate is swift, staff's change pile driver many times has been avoided to a certain extent, and the use cost of building site when the pile is driven has been reduced to a certain extent.
Specifically, as shown in fig. 5, a mounting hole 13 is formed in a position, opposite to the pile rod 5, of the supporting platform 1, the adjusting mechanism 6 comprises two connecting blocks 6-1 which are welded to the inner wall of the mounting hole 13 in a butt mode, a hydraulic cylinder i 6-2 is welded to the connecting blocks 6-1 in the radial direction of the mounting hole 13, an arc-shaped plate 6-3 is welded to a piston rod of the hydraulic cylinder i 6-2, the two arc-shaped plates 6-3 are symmetrically arranged and wrap the periphery of the pile rod 5, the extending distance of the piston rod of the two hydraulic cylinders i 6-2 can be adjusted according to the size of the pile rod 5, the two arc-shaped plates 6-3 are made to be matched with the pile rod 5, shaking of the pile rod 5 is avoided to a certain extent, and a fixing device for replacing the pile rod 5 for multiple times due to the fact that the size of the pile rod 5 is different is avoided.
Specifically, as shown in fig. 2 and 3, a storage box 14 for placing installation parts is arranged on a support platform 1, the storage box 14 includes a box body 14-1 with an opening on one side, articles detached from the device can be stored through the box body 14-1, so that installation and use of workers are facilitated, a partition plate 14-2 is fixed in the box body 14-1, one or more partition plates 14-2 can be arranged in the partition plate 14-2, the articles in the box body 14-1 can be classified through the partition plate 14-2, so that the workers can find the corresponding articles, a protection plate 14-3 is connected to one side of the partition plate 14-2 close to the opening of the box body, the articles stored on the partition plate 14-2 are protected through the protection plate 14-3, and articles on the surface of the partition plate 14-2 caused by shaking of the storage box 14 when the device moves are prevented from falling off, a door 14-4 with a lock is hinged at the opening of the box body 14-1, and articles in the storage box 14 are protected by the door 14-4.
Specifically, as shown in fig. 1 and fig. 2, the supporting platform 1 includes a bottom plate 1-1, a side plate 2 is fixed on the bottom plate 1-1, two side edges of the bottom plate 1-1 are provided with track structures 1-2, the whole device can be driven to move by starting the track structures 1-2, and meanwhile, the bottom plate 1-1 can move on a muddy road on the ground through the track structures 1-2, so that the problem that the bottom plate 1-1 cannot move on the muddy road is avoided to a certain extent. The two ends of the bottom plate 1-1 are respectively fixed with a connecting plate 1-3, the lower end of the connecting plate 1-3 is connected with a supporting plate 1-5 through a plurality of hydraulic cylinders II 1-4, the supporting plate 1-5 is contacted with the ground, and the bottom plate 1-1 is kept in a relatively horizontal state to carry out piling operation by starting the hydraulic cylinders II 1-4, so that the deviation of the pile rod 5 from the originally fixed position due to large ground inclination is avoided to a certain extent; and the hydraulic cylinders II 1-4 are supported by arranging the supporting plates 1-5, so that the problem that the hydraulic cylinders II 1-4 incline on the ground due to loose ground addresses is avoided to a certain extent.
The method for positioning the pile driver by using the designed positioning device comprises the following steps:
step 1: with 4 stable positioning of pile driver organism, guarantee the stationarity that pile driver organism 4 reciprocated: firstly, a worker holds a handle 10 to slidably connect a pile driver body 4 inside a horizontal chute 3-3 through strip-shaped support legs 9 on two sides, the pile driver body 4 is positioned above a baffle 3-5 to protect the pile driver body 4, a sealing plate is installed at the port of the horizontal chute 3-3, then the worker starts horizontal telescopic rods 3-1 on two sides to enable protective pads 3-4 on a vertical pressing plate 3-2 to be abutted against the outer surface of the pile driver body 4, and finally, the two vertical pressing plates 3-2 are tightly connected through bolt assemblies 3-6 to enable the two vertical pressing plates 3-2 to tightly hold and position the pile driver body 4, so that the pile driver body 4 is prevented from moving between the two vertical pressing plates 3-2 to a certain extent.
And 2, step: installing and guiding the pile rod 5: firstly, a sleeve 12 with a corresponding size is rotatably connected to the output end of the pile driver body 4 according to the pile driving requirement, and the pile rod 5 is inserted and positioned in the sleeve 12, so that the lower end of the pile rod 5 passes through the mounting hole 13; then, according to the diameter of the pile rod 5, the piston rods of the hydraulic cylinders I6-2 on the two opposite sides of the inner wall of the mounting hole 13 are started according to a set program to move for a set distance, so that the distance between the two arc-shaped plates 6-3 is matched with the pile rod 5, a cavity defined by the two arc-shaped plates 6-3 is in clearance fit with the pile rod 5, and a good guiding effect is guaranteed.
And step 3: moving the pile driver body 4 to the pile driving position for pile driving operation: the crawler structure 1-2 is started to drive the whole device to move to a designated position, and the hydraulic cylinders II 1-4 at the two ends of the floor are started to enable the hydraulic cylinders II 1-4 to drive the supporting plates 1-5 to move and abut against the ground, so that the bottom plate 1-1 is kept in a relatively horizontal state, and the precision and the quality of piling can be further improved.
To sum up, this pile driver positioner for civil engineering commonality is strong, is applicable to the guiding orientation of the stake pole of multiple size, need not artifical steady direction and can makes the pile driver organism remove steadily, has avoided the in-process production of organism removal to rock, has improved the precision of pile.
While the foregoing is directed to the principles of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (10)
1. The utility model provides a pile driver positioner for civil engineering, its characterized in that, includes supporting platform, supporting platform's both sides are provided with the curb plate respectively relatively, sliding connection has flexible hold-down mechanism about the inboard of curb plate, and two flexible hold-down mechanism compress tightly the location with the pile driver organism, the output of pile driver organism is connected with the stake pole, the last adjustment mechanism who will of being provided with of supporting platform the vertical guiding orientation of stake pole.
2. Pile driver positioning device for civil engineering according to claim 1, characterized in that: the inner side of the side plate is provided with a vertical sliding groove along the vertical direction, the top of the vertical sliding groove is detachably connected with a stop block, and a sliding block is connected in the vertical sliding groove in a sliding mode and connected with the telescopic pressing mechanism through the sliding block.
3. Pile driver positioning device for civil engineering according to claim 1, characterized in that: the telescopic pressing mechanism comprises a plurality of horizontal telescopic rods in sliding connection with the side plates, the telescopic ends of the horizontal telescopic rods are connected with the vertical pressing plate, the upper end of the vertical pressing plate is in sliding connection with the pile driver body, and the two vertical pressing plates tightly hold the pile driver body and then are fastened and connected.
4. Pile driver positioning device for civil engineering according to claim 3, characterized in that: the upper end of the vertical pressing plate is provided with a horizontal sliding groove along the length direction of the vertical pressing plate, strip-shaped support legs in sliding fit with the horizontal sliding groove are welded on two sides of the upper part of the pile driver body respectively, and a sealing plate is detachably connected to the port of the horizontal sliding groove; the outer end of the pile driver body is provided with a handle convenient to slide.
5. Pile driver positioning device for civil engineering according to claim 3, characterized in that: the inner side of the vertical pressing plate is provided with a protective pad which is abutted to the pile driver body, the inner side of the lower portion of the vertical pressing plate is fixedly provided with a baffle for supporting the pile driver body, and the two vertical pressing plates are detachably connected through a bolt assembly.
6. Pile driver positioning device for civil engineering according to claim 3, characterized in that: the output end of the pile driver body is provided with an internal thread section, the internal thread section is connected with a sleeve in an internal thread mode, and the pile rod is inserted and positioned in the sleeve.
7. Pile driver positioning device for civil engineering according to claim 1, characterized in that: the utility model discloses a pile pole, including mounting hole, adjusting mechanism, pneumatic cylinder I, support platform, last with the relative position department of stake pole is provided with the mounting hole, adjusting mechanism includes butt welding's two connecting blocks on the inner wall of mounting hole, follow on the connecting block the radial welded fastening of mounting hole has pneumatic cylinder I, the welding has the arc on the piston rod of pneumatic cylinder I, and two arc symmetries set up and the cladding are in the periphery of stake pole.
8. Pile driver positioning device for civil engineering according to claim 1, characterized in that: the supporting platform is provided with a storage box for placing installation parts, the storage box comprises a box body with an opening on one side, a partition plate is fixed in the box body, one side of the partition plate, which is close to the fit opening, is connected with a protection plate, and the opening of the box body is hinged with a box door with a lock.
9. Pile driver positioning device for civil engineering according to claim 1, characterized in that: the supporting platform comprises a bottom plate, the side plates are fixed on the bottom plate, crawler structures are installed on two side edges of the bottom plate, connecting plates are fixed at two ends of the bottom plate respectively, the lower ends of the connecting plates are connected with supporting plates through a plurality of hydraulic cylinders II, and the supporting plates are in contact with the ground.
10. A method of positioning a pile driver for civil engineering work using the positioning device according to any one of claims 1 to 9, comprising the steps of:
step 1: the pile driver body is stably positioned, and the stability of the up-and-down movement of the pile driver body is ensured;
and 2, step: installing a pile rod and guiding and positioning the pile rod;
and 3, step 3: and moving the pile driver body to the pile driving position for pile driving operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210435924.9A CN114775608A (en) | 2022-04-24 | 2022-04-24 | Pile driver positioning device for civil engineering and positioning method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210435924.9A CN114775608A (en) | 2022-04-24 | 2022-04-24 | Pile driver positioning device for civil engineering and positioning method thereof |
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| Publication Number | Publication Date |
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| CN114775608A true CN114775608A (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210435924.9A Pending CN114775608A (en) | 2022-04-24 | 2022-04-24 | Pile driver positioning device for civil engineering and positioning method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059076A (en) * | 2022-08-01 | 2022-09-16 | 中国电建集团华东勘测设计研究院有限公司 | Device for accurately controlling pile foundation construction interval |
-
2022
- 2022-04-24 CN CN202210435924.9A patent/CN114775608A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059076A (en) * | 2022-08-01 | 2022-09-16 | 中国电建集团华东勘测设计研究院有限公司 | Device for accurately controlling pile foundation construction interval |
| CN115059076B (en) * | 2022-08-01 | 2023-09-22 | 中国电建集团华东勘测设计研究院有限公司 | Device for accurately controlling pile foundation construction spacing |
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