CN210766767U - Pile clamping device of static pressure pile machine - Google Patents
Pile clamping device of static pressure pile machine Download PDFInfo
- Publication number
- CN210766767U CN210766767U CN201920977650.XU CN201920977650U CN210766767U CN 210766767 U CN210766767 U CN 210766767U CN 201920977650 U CN201920977650 U CN 201920977650U CN 210766767 U CN210766767 U CN 210766767U
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- sleeve
- pile
- adjusting plate
- clamping device
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Abstract
The utility model relates to a pile clamping device of static pressure stake machine. It comprises a first sleeve and a second sleeve; one end of the first sleeve is connected with one end of the second sleeve; a turntable and a clamping mechanism are arranged in the first sleeve; the clamping mechanism is provided with a second through hole with adjustable aperture so as to clamp the pile through the second through hole; a first through hole for the pile to pass through is formed in the center of the rotary table; the turntable is used for changing the aperture of the second through hole when rotating; the first sleeve is provided with a driving mechanism for driving the turntable to rotate; an elastic ring is arranged in the second sleeve, and a third through hole for clamping the pile is formed in the center of the elastic ring; the axes of the first through hole, the second through hole and the third through hole are overlapped. The rotation of the turntable drives the aperture change of the second through hole of the clamping mechanism and the change of the elastic ring to adjust the inner diameter change which can be accommodated by the second sleeve so as to meet the requirements of piles with different apertures. The first sleeve and the second sleeve are mutually matched, so that the pile is more stably accommodated in the pile clamping device.
Description
Technical Field
The utility model belongs to the technical field of the technique of static pressure stake machine and specifically relates to a pile clamping device of static pressure stake machine is related to.
Background
The static pile-pressing construction is a pile-sinking process for pressing the prefabricated pile into the soil by means of the dead weight of the static pile-pressing machine and the force provided by the balance weight on the machine frame.
The static pressure pile machine comprises a pile clamping device, the pile clamping device is provided with a through hole, a pile is installed in the through hole of the pile clamping device, and the pile is pressed into the soil under the pressure of the static pressure machine after the pile is clamped by the pile clamping device.
However, the aperture of the through hole of the pile clamping device cannot be changed, only piles of a certain size can be clamped, piles of different sizes cannot be clamped, and the application range is small.
Disclosure of Invention
The utility model aims at providing a pile clamping device of static pressure stake machine mainly lies in solving the problem that pile clamping device can't grasp not unidimensional stake among the prior art.
The above object of the present invention is achieved by the following technical solutions: comprises a first sleeve and a second sleeve; one end of the first sleeve is connected with one end of the second sleeve; a turntable and a clamping mechanism are arranged in the first sleeve; the clamping mechanism is provided with a second through hole with adjustable aperture so as to clamp the pile through the second through hole; a first through hole for the pile to pass through is formed in the center of the rotary table; the turntable is used for changing the aperture of the second through hole when rotating; the first sleeve is provided with a driving mechanism for driving the rotary disc to rotate; an elastic ring is arranged in the second sleeve, and a third through hole for clamping the pile is formed in the center of the elastic ring; the axes of the first through hole, the second through hole and the third through hole are overlapped.
Through adopting above-mentioned technical scheme, first sleeve can drive fixture's the aperture change of second through-hole through the rotation of carousel so that first sleeve can hold the stake in different apertures. The second sleeve is provided with the elastic ring, and the inner diameter change that the second sleeve can accommodate can be adjusted through the change of the elastic ring, so that piles with different apertures can be met. The first sleeve and the second sleeve are mutually matched, so that the pile is more stably accommodated in the pile clamping device.
The utility model discloses further set up to: the clamping mechanism comprises a plurality of adjusting plates which are sequentially connected end to form an annular structure, the inner hole of the annular structure is used as a second through hole, and each adjusting plate can be relatively close to or far away from the central line of the second through hole so as to reduce the aperture of the second through hole when the adjusting plate is close to the central line of the second through hole and increase the aperture of the second through hole when the adjusting plate is far away from the central line of the second through hole; the turntable is used for driving each adjusting plate to be close to or far away from the center line of the second through hole when rotating, so that the aperture of the second through hole is changed.
By adopting the technical scheme, each adjusting plate is adjusted to lean against or be far away from the center line of the second through hole when the rotary table rotates, so that the aperture of the second through hole is changed to clamp piles of different sizes.
The utility model discloses further set up to: each adjusting plate is provided with a first side edge and a second side edge which are connected, and the first side edge and the second side edge are arranged at an acute angle; the first side edge of one regulating plate can slide along the second side edge of another regulating plate adjacent to the center line of the second through hole or away from the center line of the second through hole.
By adopting the technical scheme, when the first side edge of one regulating plate can slide along the second side edge of the other adjacent regulating plate due to the acute angle arrangement, the acute angle part of the regulating plate is close to or far away from the central line of the second through hole so as to regulate the aperture of the second through hole.
The utility model discloses further set up to: the first side edge of each adjusting plate is provided with a sliding block, and the second side edge is provided with a sliding groove; the sliding block on the first side edge of one adjusting plate is used for being inserted into the sliding groove on the second side edge of the other adjacent adjusting plate and can move along the sliding groove.
Through adopting above-mentioned technical scheme, the slider on the first side of an regulating plate is through inserting the spout on the second side of adjacent another regulating plate to make two adjacent regulating plates remove.
The utility model discloses further set up to: each adjusting plate is provided with a limiting column; the turntable is provided with rotating grooves, and the number of the rotating grooves is equal to that of the limiting columns and corresponds to that of the limiting columns one by one; the limiting columns are inserted into the corresponding rotating grooves and can slide along the rotating grooves; the rotary disc is used for driving the limiting column to move through the rotary groove when rotating, so that the adjusting plate is close to or far away from the central line of the second through hole.
Through adopting above-mentioned technical scheme, when the carousel rotated, drive the swivelling chute and remove, the spacing post of regulating plate moves under the drive of swivelling chute, makes the regulating plate be close to or keep away from the central line of second through-hole.
The utility model discloses further set up to: a first annular flange is arranged inside the first sleeve and is positioned on one side of the annular structure, which is far away from the rotary disc; the lower end face of each adjusting plate is provided with a limiting block, the first annular flange is provided with limiting grooves, and the number of the limiting grooves is equal to that of the limiting blocks and corresponds to that of the limiting blocks one by one; each limiting block is inserted into the corresponding limiting groove and can slide along the limiting groove.
Through adopting above-mentioned technical scheme, first sleeve passes through first annular flange and each regulating plate swing joint. When the rotary disc rotates, each adjustable plate moves along the rotary groove relative to the rotary disc, and simultaneously slides along the limiting groove, so that the adjustable plates are prevented from being separated from the first sleeve when moving.
The utility model discloses further set up to: a guide groove is formed in the first sleeve; the turntable is provided with a guide block, and the guide block is inserted into the guide groove and can slide along the guide groove.
Through adopting above-mentioned technical scheme, the carousel slides for the guide way through the guide block and rotates in order to rotate for first sleeve to drive adjustable plate motion.
The utility model discloses further set up to: a second annular flange is arranged in the first sleeve and is positioned on one side of the rotary table, which is far away from the annular structure; the guide block is arranged on the upper end surface of the turntable; the guide groove is provided on the second annular flange.
Through adopting above-mentioned technical scheme, first sleeve passes through the second annular flange and is connected with the carousel, and the guide block inserts the guide way to can move for the guide way, so that the carousel moves for first sleeve.
The utility model discloses further set up to: the driving mechanism comprises a transmission gear and a motor; the motor is used for driving the transmission gear to rotate; the outer edge of the turntable is provided with outer teeth, and the transmission gear is meshed with the outer teeth of the turntable so as to be driven to drive the turntable to rotate.
Through adopting above-mentioned technical scheme, motor drive gear rotates, and drive gear meshes with the external tooth of carousel when rotating, makes the carousel rotate, and then drives adjustable board and remove to change the aperture of second through-hole.
The utility model discloses further set up to: the second sleeve is provided with a first half cylinder and a second half cylinder which can be opened and closed relatively; the elastic ring comprises a first elastic half ring and a second elastic half ring; the first elastic half ring is arranged on the inner wall of the first half cylinder; the second elastic half ring is arranged on the inner wall of the second half cylinder; when the first half cylinder is closed relative to the second half cylinder, a third through hole is formed between the first elastic half ring and the second elastic half ring.
Through adopting above-mentioned technical scheme, first elasticity semi-ring and second elasticity semi-ring form the third through-hole of mountable stake, make the stake more firm. The stake can be inserted when the first half-cylinder is open relative to the second half-cylinder, and then the first half-cylinder is closed relative to the second half-cylinder, at which time a third through-hole is formed to accommodate the stake.
To sum up, the utility model discloses a beneficial technological effect does:
1. the aperture of the second through hole is changed when the turntable rotates, so that piles of different sizes can be clamped.
2. The second sleeve can hold piles of different sizes by changing the deformation degree of the elastic ring.
3. The first sleeve and the second sleeve are matched to enable the pile to be clamped more stably.
Drawings
Fig. 1 is a schematic overall structure diagram of a pile clamping device of a static pile press.
Fig. 2 is a schematic structural view of the second sleeve.
Fig. 3 is a schematic structural diagram of the driving device, the turntable and the adjusting plate.
Fig. 4 is a schematic view of the structure of the adjustment plate.
In the figure, 1, a first sleeve; 2. a second sleeve; 21. a first half cylinder; 22. a second half cartridge; 3. a turntable; 31. a first through hole; 32. a rotating tank; 33. an outer tooth; 34. a guide block; 4. an adjusting plate; 41. a slider; 42. a chute; 43. a limiting column; 44. a limiting block; 5. a second through hole; 6. an elastic ring; 61. a first elastic half ring; 62. a second elastic half ring; 7. A drive mechanism; 71. a transmission gear; 72. an electric motor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. As shown in fig. 1, comprises a first sleeve 1 and a second sleeve 2; one end of the first sleeve 1 is connected with one end of the second sleeve 2; the first sleeve 1 is positioned above the second sleeve 2, and a turntable 3 and a clamping mechanism are arranged in the first sleeve 1; the clamping mechanism is provided with a second through hole 5 with adjustable aperture so as to clamp the pile through the second through hole 5; the center of the rotary table 3 is provided with a first through hole 31 for the pile to pass through; the rotary table 3 is used for changing the aperture of the second through hole 5 when rotating; the first sleeve 1 is provided with a driving mechanism 7 for driving the rotary disc 3 to rotate; as shown in fig. 2, an elastic ring 6 is arranged in the second sleeve 2, and a third through hole for clamping the pile is arranged in the center of the elastic ring 6; the axes of the first through hole 31, the second through hole 5 and the third through hole coincide.
As shown in fig. 3, the clamping mechanism includes a plurality of adjusting plates 4, the plurality of adjusting plates 4 are sequentially connected end to form an annular structure, an inner hole of the annular structure is used as a second through hole 5, each adjusting plate 4 can be relatively close to or far away from a center line of the second through hole 5, so that the aperture of the second through hole 5 is reduced when the adjusting plate is close to the center line of the second through hole 5, and the aperture of the second through hole 5 is increased when the adjusting plate is far away from the center line of the second through hole 5; the rotary table 3 is used for driving each adjusting plate 4 to be close to or far away from the central line of the second through hole 5 when rotating, so that the aperture of the second through hole 5 is changed. Each adjusting plate 4 is provided with a first side edge and a second side edge which are connected, and the first side edge and the second side edge are arranged at an acute angle; the adjustment plates 4 are shaped as shown in fig. 4, and a first side of one adjustment plate 4 is slidable along a second side of another adjacent adjustment plate 4 to be closer to or farther from a center line of the second through-hole 5. As shown in fig. 4 and 3, a sliding block 41 is disposed on a first side of each adjusting plate 4, and a sliding groove 42 is disposed on a second side; the sliding block 41 on the first side of one adjusting plate 4 is used for being inserted into the sliding groove 42 on the second side of the adjacent other adjusting plate 4 and can move along the sliding groove 42. As shown in fig. 3 and 4, each adjusting plate 4 is provided with a limiting column 43; the turntable 3 is provided with rotating grooves 32, the number of the rotating grooves 32 is equal to that of the limiting columns 43, and the rotating grooves are in one-to-one correspondence; most preferably, the shape of the rotation slot 32 is as shown in FIG. 3. The limiting columns 43 are inserted into the corresponding rotating grooves 32 and can slide along the rotating grooves 32; the rotary disc 3 is used for driving the limiting column 43 to move through the rotating groove 32 when rotating, so that the adjusting plate 4 is close to or far away from the central line of the second through hole 5, and the shape of the rotary disc 3 is as shown in fig. 3.
A first annular flange is arranged inside the first sleeve 1 and is positioned on one side of the annular structure, which is far away from the rotary disc 3; the lower end face of each adjusting plate 4 is provided with a limiting block 44, the position of the limiting block 44 is shown in fig. 4, the lower end face deviates from the upper end face, and the upper end face is the end face provided with a limiting column 43. The limiting block 44 and the limiting column 43 have the same shape, and the axes of the two are overlapped. The first annular flange is provided with limiting grooves, the number of the limiting grooves is equal to that of the limiting blocks 44, and the limiting grooves correspond to the limiting blocks one to one; the limiting grooves are consistent with the rotating grooves 32 in shape and correspond to one another. The inner ring of the first annular flange has the same size as the first through hole 31, and the axes of the first annular flange and the first through hole coincide. Each stopper 44 is inserted into the corresponding stopper groove and can slide along the stopper groove. A guide groove is arranged in the first sleeve 1; as shown in fig. 3, the turntable 3 is provided with a guide block 34, and the guide block 34 is inserted into the guide groove and can slide along the guide groove. The guide block 34 is annular and the guide groove is correspondingly annular, so that when the rotary disc 3 rotates, the guide block 34 slides in the guide groove. A second annular flange is arranged in the first sleeve 1, is arranged above the first annular flange and is positioned on one side of the rotary table 3, which is far away from the annular structure; the guide block 34 is arranged on the upper end surface of the rotary table 3; the guide groove is provided on the second annular flange.
As shown in fig. 3, the driving mechanism 7 includes a transmission gear 71 and a motor 72; the motor 72 is used for driving the transmission gear 71 to rotate; the outer edge of the rotary table 3 is provided with outer teeth 33, and the transmission gear 71 is meshed with the outer teeth 33 of the rotary table 3 so as to be driven to drive the rotary table 3 to rotate. The side wall of the first sleeve 1 is opened, and the transmission gear 71 extends into the inner wall of the first sleeve 1 from the side wall opening and is meshed with the external teeth 33 of the rotary disc 3. The motor 72 is disposed outside the first sleeve 1.
As shown in fig. 2, the second sleeve 2 has a first half 21 and a second half 22 which can be opened and closed relatively; the elastic ring 6 comprises a first elastic half ring 61 and a second elastic half ring 62; the first elastic half ring 61 is arranged on the inner wall of the first half cylinder 21; the second elastic half ring 62 is arranged on the inner wall of the second half cylinder 22; when the first half cylinder 21 is closed relative to the second half cylinder 22, a third through hole is formed between the first elastic half ring 61 and the second elastic half ring 62. The first half cylinder 21 is hinged with the second half cylinder 22, and the first half cylinder 21 and the second half cylinder 22 are connected through screws on the side far away from the hinged part. The elastic half ring may be a rubber half ring. When the first half cylinder 21 and the second half cylinder 22 are relatively closed, if the rubber half rings are in the original state, the aperture of the third through hole is consistent with that of the second through hole 5 to the minimum limit; if the rubber half ring is in the limit state of compression, the aperture of the third through hole is consistent with the aperture of the first through hole 31. The rubber half ring is in the original state in fig. 2.
The implementation principle of the embodiment is as follows: the first sleeve 1 can drive the aperture of the second through hole 5 of the clamping mechanism to change through the rotation of the rotary table 3, so that the first sleeve 1 can accommodate piles with different apertures. The second sleeve 2 is provided with an elastic ring 6, and the inner diameter change which can be accommodated by the second sleeve 2 can be adjusted through the change of the elastic ring 6 so as to meet the requirements of piles with different apertures. The first sleeve 1 and the second sleeve 2 cooperate with each other to allow the pile to be more stably accommodated in the pile clamping device. When the rotary table 3 rotates, each adjusting plate 4 is adjusted to be close to or far away from the center line of the second through hole 5, so that the aperture of the second through hole 5 is changed to clamp piles of different sizes. The acute angle arrangement enables the acute angle part of the adjusting plate 4 to approach or depart from the center line of the second through hole 5 to adjust the aperture of the second through hole 5 when the first side edge of one adjusting plate 4 can slide along the second side edge of another adjacent adjusting plate 4. The slider 41 on the first side of one adjusting plate 4 moves the adjacent two adjusting plates 4 by being inserted into the slide groove 42 on the second side of the adjacent other adjusting plate 4. When the rotary table 3 rotates, the rotary groove 32 is driven to move, and the limiting column 43 of the adjusting plate 4 is driven by the rotary groove 32 to move, so that the adjusting plate 4 is close to or far away from the central line of the second through hole 5. The first sleeve 1 is movably connected with each adjusting plate 4 through a first annular flange. When the rotary table 3 rotates, each adjustable plate 4 moves along the rotary groove 32 relative to the rotary table 3, and each adjustable plate 4 slides along the limiting groove, so that the first sleeve 1 is prevented from being separated during movement. The rotary disc 3 slides relative to the guide groove by means of the guide block 34 to rotate relative to the first sleeve 1, thereby moving the adjustable plate 4. The first sleeve 1 is connected to the rotary disc 3 by means of a second annular flange, and the guide blocks 34 are inserted in the guide slots and are movable with respect to the guide slots to move the rotary disc 3 with respect to the first sleeve 1. The motor 72 drives the transmission gear 71 to rotate, and the transmission gear 71 is meshed with the outer teeth 33 of the turntable 3 when rotating, so that the turntable 3 rotates, and the adjustable plate 4 is driven to move, so as to change the aperture of the second through hole 5. The first elastic half ring 61 and the second elastic half ring 62 form a third through hole for mounting the pile, so that the pile is more stable. The peg can be inserted when the first half-cylinder 21 is open with respect to the second half-cylinder 22, after which the first half-cylinder 21 is closed with respect to the second half-cylinder 22, at which time a third through-hole is formed to accommodate the peg.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. The utility model provides a pile clamping device of static pressure stake machine which characterized in that: comprises a first sleeve (1) and a second sleeve (2); one end of the first sleeve (1) is connected with one end of the second sleeve (2);
a turntable (3) and a clamping mechanism are arranged in the first sleeve (1);
the clamping mechanism is provided with a second through hole (5) with adjustable aperture, so as to clamp the pile through the second through hole (5);
a first through hole (31) for a pile to pass through is formed in the center of the rotary table (3); the rotary disc (3) is used for changing the aperture of the second through hole (5) when rotating;
the first sleeve (1) is provided with a driving mechanism (7) for driving the turntable (3) to rotate;
an elastic ring (6) is arranged in the second sleeve (2), and a third through hole for clamping the pile is formed in the center of the elastic ring (6);
the axes of the first through hole (31), the second through hole (5) and the third through hole are overlapped.
2. The pile clamping device of the static pile machine according to claim 1, characterized in that: the clamping mechanism comprises a plurality of adjusting plates (4), the adjusting plates (4) are sequentially connected end to form an annular structure, an inner hole of the annular structure serves as the second through hole (5), each adjusting plate (4) can be relatively close to or far away from the central line of the second through hole (5), so that the aperture of the second through hole (5) is reduced when the adjusting plate is close to the central line of the second through hole (5), and the aperture of the second through hole (5) is increased when the adjusting plate is far away from the central line of the second through hole (5);
the turntable (3) is used for driving each adjusting plate (4) to be close to or far away from the central line of the second through hole (5) when rotating, so that the aperture of the second through hole (5) is changed.
3. The pile clamping device of the static pile machine according to claim 2, characterized in that: each adjusting plate (4) is provided with a first side edge and a second side edge which are connected, and the first side edge and the second side edge are arranged in an acute angle;
the first side edge of one regulating plate (4) can slide along the second side edge of another regulating plate (4) adjacent to the center line of the second through hole (5).
4. The pile clamping device of the static pile machine according to claim 3, characterized in that: the first side edge of each adjusting plate (4) is provided with a sliding block (41), and the second side edge is provided with a sliding groove (42);
the sliding block (41) on the first side of one adjusting plate (4) is used for being inserted into the sliding groove (42) on the second side of the other adjacent adjusting plate (4) and can move along the sliding groove (42).
5. Pile clamping device of a static pile machine according to claim 3 or 4, characterized in that: each adjusting plate (4) is provided with a limiting column (43);
the rotary disc (3) is provided with rotary grooves (32), the number of the rotary grooves (32) is equal to that of the limiting columns (43), and the rotary grooves correspond to the limiting columns one by one;
the limiting columns (43) are inserted into the corresponding rotating grooves (32) and can slide along the rotating grooves (32);
the rotary disc (3) is used for driving the limiting column (43) to move through the rotary groove (32) during rotation, so that the adjusting plate (4) is close to or far away from the central line of the second through hole (5).
6. The pile clamping device of the static pile machine according to claim 3, characterized in that: a first annular flange is arranged inside the first sleeve (1) and is positioned on one side of the annular structure, which is far away from the rotary disc (3);
the lower end face of each adjusting plate (4) is provided with a limiting block (44), the first annular flange is provided with limiting grooves, and the number of the limiting grooves is equal to that of the limiting blocks (44) and corresponds to that of the limiting blocks (44);
each limiting block (44) is respectively inserted into the corresponding limiting groove and can slide along the limiting groove.
7. The pile clamping device of the static pile machine according to claim 6, characterized in that: a guide groove is arranged in the first sleeve (1);
the rotary table (3) is provided with a guide block (34), and the guide block (34) is inserted into the guide groove and can slide along the guide groove.
8. The pile clamping device of the static pile machine according to claim 7, characterized in that: a second annular flange is arranged in the first sleeve (1) and is positioned on one side, away from the annular structure, of the rotary table (3);
the guide block (34) is arranged on the upper end face of the rotary table (3); the guide groove is provided on the second annular flange.
9. The pile clamping device of the static pile machine according to any one of claims 1 to 4 and 6 to 8, wherein: the driving mechanism (7) comprises a transmission gear (71) and a motor (72);
the motor (72) is used for driving the transmission gear (71) to rotate;
the outer edge of the turntable (3) is provided with outer teeth (33), and the transmission gear (71) is meshed with the outer teeth (33) of the turntable (3) so as to be driven to drive the turntable (3) to rotate.
10. The pile clamping device of the static pile machine according to any one of claims 1 to 4 and 6 to 8, wherein: the second sleeve (2) is provided with a first half cylinder (21) and a second half cylinder (22) which can be opened and closed relatively; the elastic ring (6) comprises a first elastic half ring (61) and a second elastic half ring (62);
the first elastic half ring (61) is arranged on the inner wall of the first half cylinder (21);
the second elastic half ring (62) is arranged on the inner wall of the second half cylinder (22);
when the first half cylinder (21) is closed relative to the second half cylinder (22), a third through hole is formed between the first elastic half ring (61) and the second elastic half ring (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920977650.XU CN210766767U (en) | 2019-06-26 | 2019-06-26 | Pile clamping device of static pressure pile machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920977650.XU CN210766767U (en) | 2019-06-26 | 2019-06-26 | Pile clamping device of static pressure pile machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210766767U true CN210766767U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920977650.XU Expired - Fee Related CN210766767U (en) | 2019-06-26 | 2019-06-26 | Pile clamping device of static pressure pile machine |
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| Country | Link |
|---|---|
| CN (1) | CN210766767U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962608A (en) * | 2021-02-25 | 2021-06-15 | 江苏地基工程有限公司 | Method for reducing bending damage of pipe pile in soft soil |
-
2019
- 2019-06-26 CN CN201920977650.XU patent/CN210766767U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962608A (en) * | 2021-02-25 | 2021-06-15 | 江苏地基工程有限公司 | Method for reducing bending damage of pipe pile in soft soil |
| CN112962608B (en) * | 2021-02-25 | 2022-08-05 | 江苏地基工程有限公司 | Method for reducing bending damage of pipe pile in soft soil |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 |
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| CF01 | Termination of patent right due to non-payment of annual fee |