CN211006671U - Counter-pressure pile pulling device - Google Patents
Counter-pressure pile pulling device Download PDFInfo
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- CN211006671U CN211006671U CN201921494509.0U CN201921494509U CN211006671U CN 211006671 U CN211006671 U CN 211006671U CN 201921494509 U CN201921494509 U CN 201921494509U CN 211006671 U CN211006671 U CN 211006671U
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Abstract
The utility model relates to a counter-pressure pile pulling device, which comprises a ring plate and a cover plate, wherein the edge of the ring plate is fixed on the inner wall of a pile body, and the cover plate covers the inner ring area of the ring plate; the cover plate is arranged on one side of the ring plate, which faces the end part of the pile body, and the cover plate is detachably matched with the ring plate; the middle part of the cover plate is provided with a connector for connecting a pipeline, and the connector is arranged corresponding to the inner area of the ring plate. The utility model is provided with the ring plate and the cover plate which are detachably matched; when the pipe pile is driven, the cover plate is not connected to the interior of the pipe pile; when pile pulling is carried out on the tubular pile, the cover plate is installed on the ring plate, then gas or input water is blown into by the connector above the cover plate, so that upward reaction force is applied to the cover plate by the gas or the water, and the pile pulling difficulty is reduced.
Description
Technical Field
The utility model belongs to the technical field of the technique of tubular pile pulling and specifically relates to a backpressure pile pulling device is related to.
Background
In the construction process, steel pipe piles are driven into soil around the foundation pit to form a foundation pit enclosure structure. After the foundation pit construction is completed, the steel pipe pile needs to be pulled out of the soil body for recycling. However, in the process of driving the pipe pile into the soil body, the soil body is squeezed by the pipe pile, so that the friction force between the pipe pile and the soil body is large, and the pipe pile is very difficult to pull out from the soil body by using pile pulling equipment.
It is necessary to provide a counter-pressure pile pulling device, so that the process of pulling the tubular pile out of the soil body becomes simpler and more convenient.
Disclosure of Invention
The utility model aims at providing a counter pressure pile pulling device has reached the effect of conveniently pulling out the pile.
The above object of the present invention is achieved by the following technical solutions:
a counter-pressure pile pulling device comprises a ring plate and a cover plate, wherein the edge of the ring plate is fixed on the inner wall of a pile body, and the cover plate covers the inner ring area of the ring plate; the cover plate is arranged on one side of the ring plate, which faces the end part of the pile body, and the cover plate is detachably matched with the ring plate; the cover plate is characterized in that a connector used for connecting a pipeline is arranged in the middle of the cover plate, and the connector corresponds to the inner area of the ring plate.
Through adopting above-mentioned technical scheme, when carrying out the pile of tubular pile, the crown plate is fixed inside the tubular pile, and the edge of crown plate seals the inner wall of tubular pile, and apron and crown plate alternate segregation. After the tubular pile is driven into the soil body, the head of the tubular pile is exposed above the soil layer, and the annular plate is also positioned above the soil layer. When pile pulling of the tubular pile is needed, soil in the tubular pile is excavated through the hole in the middle of the ring plate, and a height difference of about 30cm is formed between the ring plate and the surface of the soil layer in the tubular pile. The cover plate is then mounted over the ring plate and the pipes are connected at the location of the joints of the cover plate. The space formed between the cover plate and the upper surface of the soil layer in the tubular pile is inflated with gas or injected with water by using a water pump or a gas pump, and after the space is filled with gas or water, the gas and the water are continuously inflated, and an upward acting force is applied to the cover plate, so that the tubular pile is pulled out under the dual functions of the acting force and the pile pulling equipment. Because the cover plate is subjected to the counterforce given by gas or water, the upward acting force can be better applied to the tubular pile, and the calculation principle of the acting force conforms to the mechanical theorem and is not repeated again.
In addition, gas and water can also enter into the junction of soil layer and tubular pile inner wall for the frictional resistance of the inside hookup location of soil layer and tubular pile reduces, thereby further reduces the degree of difficulty of pulling out the stake, improves and pulls out the stake effect.
The utility model discloses further set up to: a connecting assembly is additionally arranged between the ring plate and the cover plate; the connecting component comprises a through hole arranged on the ring plate, a threaded rod arranged by penetrating through the through hole, a nut sleeved outside the threaded rod and a matching hole arranged on the surface of the cover plate; at least three through holes are uniformly distributed along the circumferential direction of the annular plate; the threaded rod is welded on the ring plate and penetrates through the matching hole; the cover plate is located between the nut and the ring plate.
Through adopting above-mentioned technical scheme, during the actual installation, ring plate and threaded rod snap-on are inside the tubular pile. And in the later stage, when the pile of the tubular pile needs to be pulled out, the cover plate is arranged above the ring plate. Because the threaded rod and the ring plate are welded and fixed, the probability of air leakage or water leakage at the joint of the threaded rod and the ring plate can be reduced, and the effect of applying the reaction force to the cover plate is improved.
In addition, in the actual production process of the tubular pile, the ring plate with the through holes can directly adopt a commercially available flange ring, so that the production difficulty and cost are reduced.
The utility model discloses further set up to: a sealing ring is clamped between the cover plate and the ring plate, and the sealing ring and the ring plate are coaxially arranged; the inner ring of the sealing ring is positioned between the threaded rod and the inner ring of the ring plate.
Through adopting above-mentioned technical scheme, further improve the sealed effect between apron and the ring plate, gaseous and water can not follow the online of threaded rod and ring plate and for it spills over simultaneously, so can improve the holistic sealing performance of ring plate and apron, and then improve the effect of the reaction force that the apron received.
The utility model discloses further set up to: a first inserting groove is formed in one side, facing the cover plate, of the ring plate, and a second inserting groove is formed in one side, facing the ring plate, of the cover plate; one side of the sealing ring is in inserting fit with the first inserting groove, and the other side of the sealing ring is in inserting fit with the second inserting groove.
Through adopting above-mentioned technical scheme, conveniently fix a position the sealing washer to seal up annular plate and apron better.
The utility model discloses further set up to: a connecting assembly is additionally arranged between the ring plate and the cover plate; the connecting component comprises a threaded hole arranged on the ring plate, a bolt which penetrates through the threaded hole and is in threaded fit with the threaded hole, and a matching hole arranged on the surface of the cover plate; at least three threaded holes are uniformly distributed along the circumferential direction of the ring plate; the bolt passes through the matching hole, and the bolt head of the bolt is tightly propped against the cover plate.
By adopting the technical scheme, when the tubular pile is produced, the ring plate can be welded inside the tubular pile. When the pile needs to be pulled out of the pipe pile foundation in the later period, the bolts are fixed again, so that members such as the bolts cannot be located inside the pipe pile in the pile driving process, and the bending or damage of the bolts in the pile driving process is reduced.
The utility model discloses further set up to: a connecting assembly is additionally arranged between the ring plate and the cover plate; the connecting component comprises a through hole arranged on the ring plate, a nut fixed in the through hole, a bolt penetrating through the nut and in threaded fit with the nut, and a matching hole arranged on the surface of the cover plate; at least three through holes are uniformly distributed along the circumferential direction of the annular plate, and the outer wall of the nut is welded on the inner wall of each through hole; the bolt passes through the matching hole, and the bolt head of the bolt is tightly propped against the cover plate.
Through adopting above-mentioned technical scheme, in actual tubular pile production process, the ring plate that has the through-hole can directly adopt the flange ring of market purchase, then with nut lug weld inside the through-hole. Tapping is not needed to be carried out on the ring plate, and the difficulty and the cost of production are reduced.
The utility model discloses further set up to: the ring plate and the cover plate are clamped with sealing rings, and all the bolts penetrate through the sealing rings.
Through adopting above-mentioned technical scheme, reduce the probability that gas or water spill over from the clearance between bolt and the ring plate.
The utility model discloses further set up to: the bolt is sleeved with a base plate, and the base plate is clamped between the cover plate and the bolt head of the bolt.
Through adopting above-mentioned technical scheme, the sealed effect between cooperation sealing washer further improves crown plate and the apron.
To sum up, the utility model discloses a beneficial technological effect does:
1. the ring plate and the cover plate are arranged and detachably matched; when the pipe pile is driven, the cover plate is not connected to the interior of the pipe pile; when the pile is required to be pulled out, the cover plate is arranged on the ring plate, and then gas is blown in or water is input by utilizing the connector above the cover plate, so that the gas or the water exerts an upward reaction force on the cover plate, and the pile pulling difficulty is reduced;
2. the sealing ring is arranged, so that the sealing strength between the ring plate and the cover plate is improved, and the pile pulling effect is further improved.
Drawings
Fig. 1 is a schematic overall structure diagram of the first embodiment.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a schematic view of the overall structure of the second embodiment.
Fig. 4 is a partially enlarged schematic view of a portion B in fig. 3.
Fig. 5 is a schematic view of the overall structure of the third embodiment.
Fig. 6 is a partially enlarged schematic view of a portion C in fig. 5.
Fig. 7 is a schematic view of the whole structure of pile body pile-pulling by using air bags.
In the figure, 1, a pile body; 2. a counter-pressure pile pulling device; 21. a ring plate; 211. a first insertion groove; 22. a cover plate; 221. a connector; 222. a second insertion groove; 3. a connecting assembly; 31. a through hole; 32. a threaded rod; 33. a nut; 34. a mating hole; 35. a bolt; 36. a threaded hole; 4. a seal ring; 5. a base plate; 6. a steel plate; 61. a channel; 7. an air bag; 71. a joint; 8. a clamping member.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example one
Referring to fig. 1, for the utility model discloses a counter-pressure pile pulling device, it is installed inside the pile body 1 of tubular pile. The pile body 1 may be a steel pipe pile with a circular, square or other cross section.
The pile body 1 after being driven into the soil body is used for explanation, and the counter-pressure pile pulling device 2 is arranged close to the pile top of the pile body 1. Normally, the back pressure pile pulling device 2 is arranged at a position 30cm-50cm away from the pile top of the pile body 1, and the specific distance is determined according to construction requirements.
The counter-pressure pile driver 2 comprises a ring plate 21 and a cover plate 22. The outer edge of the ring plate 21 is welded to the inner wall of the pile body 1 by full welding, and the cover plate 22 is mounted on the upper surface of the ring plate 21. The ring plate 21 and the cover plate 22 are fixed by the connecting assembly 3.
Referring to fig. 1 and 2, the connecting assembly 3 includes a through hole 31 opened on the ring plate 21, a threaded rod 32 disposed through the through hole 31, a nut 33 sleeved on the exterior of the threaded rod 32, and a fitting hole 34 opened on the surface of the cover plate 22. At least three through holes 31 are uniformly distributed along the circumferential direction of the ring plate 21. When the pile body 1 is a steel pipe pile with a circular section, the ring plate 21 can be a commercially available flange ring.
The parts of the threaded rod 32 corresponding to the two side surfaces of the ring plate 21 are welded on the ring plate 21 by full welding, and the two ends of the threaded rod 32 are positioned outside the through hole 31. When the cover plate 22 is installed, the fitting hole 34 of the cover plate 22 is inserted corresponding to the threaded rod 32, and then the nut 33 is sleeved outside the threaded rod 32 and tightened so that the cover plate 22 is positioned between the nut 33 and the ring plate 21.
In order to facilitate the mating holes 34 to be more quickly inserted into the threaded rods 32, the mating holes 34 extend along the circumferential direction of the cover plate 22 as a hole having a certain length such that the mating holes 34 of the cover plate 22 can slide relative to the threaded rods 32. The middle part of the cover plate 22 is communicated with a connector 221 for connecting a pipeline, and the connector 221 adopts a common thread head. The connection head 221 is disposed corresponding to the inner ring area of the ring plate 21, and may be disposed at the center of the remodeling according to the construction requirement.
In order to improve the sealing effect between the cover plate 22 and the ring plate 21, a seal ring 4 is interposed between the cover plate 22 and the ring plate 21. The sealing ring 4 and the ring plate 21 are arranged coaxially, and all the threaded rods 32 are arranged through the sealing ring 4. Meanwhile, the position of the sealing ring 4 is better positioned; a first inserting groove 211 is formed in one side of the ring plate 21 facing the cover plate 22, and a second inserting groove 222 is formed in one side of the cover plate 22 facing the ring plate 21; one side of the sealing ring 4 is in inserting fit with the first inserting groove 211, and the other side of the sealing ring 4 is in inserting fit with the second inserting groove 222.
The implementation principle of the embodiment is as follows: during driving, the ring plate 21 and the threaded rod 32 are fixed inside the pile body 1. When the pile body 1 in the soil body needs to be pulled out, firstly, the soil layer below the annular plate 21 is excavated by utilizing the hole in the annular plate 21, so that a height difference of about 30cm is formed between the annular plate 21 and the surface of the soil layer in the pipe pile. Then, the rubber ring is fitted over the outside of the threaded rod 32, and is inserted into the first insertion groove 211 of the ring plate 21. The cover plate 22 is removed so that the threaded rod 32 passes through the mating hole 34 until the cover plate 22 rests on the ring plate 21, while the top of the rubber ring is inserted into the second insertion groove 222 of the cover plate 22. Then, a nut 33 is fitted around the outside of each of the threaded rods 32 and tightened. Finally, an air pipe or a water pipe is connected to the connector 221 of the cover plate 22. And pile pulling equipment is arranged near the tubular pile to pull the tubular pile. Meanwhile, gas is blown or water is injected into the space formed between the cover plate 22 and the upper surface of the soil layer inside the pipe pile. When the space is filled with gas or water, gas and water are continuously blown in, an upward reaction force is applied to the cover plate 22, and the tubular pile is pulled up under the double actions of the reaction force and the pile pulling equipment.
Example two
With reference to fig. 3 and 4, the only difference between the counter-pressure pile pulling apparatus disclosed in the present invention and the first embodiment is that the connecting assembly 3 is different.
The connecting assembly 3 includes a threaded hole 36 opened in the ring plate 21, a bolt 35 passing through the threaded hole 36 and threadedly engaged therewith, and a fitting hole 34 opened in a surface of the cover plate 22. The threaded holes 36 are uniformly distributed at least three along the circumferential direction of the ring plate 21. The matching hole 34 is opened corresponding to the threaded hole 36, and the bolt 35 is disposed through the matching hole 34. The bolt 35 is sleeved with a backing plate 5, and the backing plate 5 is clamped between the cover plate 22 and the bolt head of the bolt 35.
During installation, the sealing ring 4 is firstly taken and inserted into the first inserting groove 211 of the ring plate 21, so that the hole of the sealing ring 4, which corresponds to the inserting bolt 35, corresponds to the threaded hole 36 of the ring plate 21. The cover plate 22 is taken to cover the ring plate 21, so that the top of the sealing ring 4 is inserted into the second insertion groove 222 of the cover plate 22, and the matching hole 34 and the threaded hole 36 correspond. The tie plate 5 is taken out and sleeved outside the bolt 35, and the bolt 35 sleeved with the tie plate 5 passes through the matching hole 34 and the sealing ring 4 and is inserted into the threaded hole 36. The bolts 35 are tightened so that the seal ring 4 is sandwiched between the ring plate 21 and the cover plate 22, and the shim plate 5 is sandwiched between the cover plate 22 and the bolt heads of the bolts 35.
EXAMPLE III
With reference to fig. 5 and 6, in order to disclose a device for pulling out a pile under counter pressure according to the present invention, the only difference from the first embodiment is that the connection assembly 3 is different.
The connecting assembly 3 includes a through hole 31 opened in the ring plate 21, a nut 33 fixed in the through hole 31, a bolt 35 passing through the nut 33 and threadedly engaged therewith, and a fitting hole 34 opened in a surface of the cover plate 22. At least three through holes 31 are uniformly distributed along the circumferential direction of the ring plate 21, and the outer wall of the nut 33 is welded on the inner wall of the through hole 31. When the pile body 1 is a steel pipe pile with a circular section, the ring plate 21 can be a commercially available flange ring.
The bolt 35 is disposed through the fitting hole 34. The bolt 35 is sleeved with a backing plate 5, and the backing plate 5 is clamped between the cover plate 22 and the bolt head of the bolt 35.
Before mounting, the nut 33 is inserted into the through hole 31 of the ring plate 21, and the nut 33 and the ring plate 21 are welded. Then the ring plate 21 is welded inside the pile body 1 for later piling. The ring plate 21 may be welded to the inside of the pile body 1, and the nut 33 may be welded to the through hole 31 of the ring plate 21 when pile extraction is required in a later stage.
When the sealing ring is installed, the sealing ring 4 is firstly taken out and inserted into the first inserting groove 211 of the ring plate 21, so that the hole of the sealing ring 4, which corresponds to the inserting bolt 35, corresponds to the through hole 31 of the ring plate 21. The cover plate 22 is taken to cover the ring plate 21, so that the top of the sealing ring 4 is inserted into the second inserting groove 222 of the cover plate 22, and the matching hole 34 corresponds to the through hole 31. The tie plate 5 is taken out and sleeved outside the bolt 35, and the bolt 35 sleeved with the tie plate 5 passes through the matching hole 34 and the sealing ring 4 and is inserted into the through hole 31. The bolts 35 are tightened so that the seal ring 4 is sandwiched between the ring plate 21 and the cover plate 22, and the shim plate 5 is sandwiched between the cover plate 22 and the bolt heads of the bolts 35.
Referring to fig. 7, in addition to this, pile body 1 may be pulled out by using a combination of steel plate 6 and air bag 7 in the actual pile pulling process. Firstly, the air bag 7 is placed above a soil layer in the pile body 1, then a steel plate 6 is covered above the air bag 7, and a channel 61 for extending an upper connector 71 of the air bag 7 is formed in the steel plate 6. Then the clamping piece 8 on the pile pulling equipment is fixed on the top of the pile body 1, and gas is blown into the air bag 7. With the expansion of the air bag 7, the steel plate 6 moves upwards until abutting against the clamping piece 8 of the pile pulling equipment, so that an upward force is applied to the pile body 1.
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 (8)
1. The utility model provides a counter-pressure pile pulling device which characterized in that: comprises a ring plate (21) and a cover plate (22), the cover plate (22) is detachably matched with the ring plate (21), and the cover plate (22) covers the inner ring area of the ring plate (21); the middle of the cover plate (22) is provided with a connector (221) used for connecting a pipeline, and the connector (221) is arranged in an inner ring area corresponding to the ring plate (21).
2. A counter-pressure pile driver according to claim 1, characterised in that: a connecting component (3) is additionally arranged between the ring plate (21) and the cover plate (22); the connecting component (3) comprises a through hole (31) arranged on the ring plate (21), a threaded rod (32) arranged by penetrating through the through hole (31), a nut (33) sleeved outside the threaded rod (32) and a matching hole (34) arranged on the surface of the cover plate (22); at least three through holes (31) are uniformly distributed along the circumferential direction of the annular plate (21); the threaded rod (32) is welded on the ring plate (21), and the threaded rod (32) is arranged through the matching hole (34); the cover plate (22) is located between the nut (33) and the ring plate (21).
3. A counter-pressure pile driver according to claim 2, characterised in that: a sealing ring (4) is clamped between the cover plate (22) and the annular plate (21), and the sealing ring (4) and the annular plate (21) are coaxially arranged; the inner ring of the sealing ring (4) is positioned between the threaded rod (32) and the inner ring of the ring plate (21).
4. A counter-pressure pile driver according to claim 3, characterised in that: a first inserting groove (211) is formed in one side, facing the cover plate (22), of the annular plate (21), and a second inserting groove (222) is formed in one side, facing the annular plate (21), of the cover plate (22); one side of the sealing ring (4) is in plug-in fit with the first plug-in groove (211), and the other side of the sealing ring (4) is in plug-in fit with the second plug-in groove (222).
5. A counter-pressure pile driver according to claim 1, characterised in that: a connecting component (3) is additionally arranged between the ring plate (21) and the cover plate (22); the connecting component (3) comprises a threaded hole (36) formed in the ring plate (21), a bolt (35) penetrating through the threaded hole (36) and in threaded fit with the threaded hole, and a matching hole (34) formed in the surface of the cover plate (22); at least three threaded holes (36) are uniformly distributed along the circumferential direction of the ring plate (21); the bolt (35) penetrates through the matching hole (34), and the bolt head of the bolt (35) abuts against the cover plate (22).
6. A counter-pressure pile driver according to claim 1, characterised in that: a connecting component (3) is additionally arranged between the ring plate (21) and the cover plate (22); the connecting component (3) comprises a through hole (31) arranged on the ring plate (21), a nut (33) fixed in the through hole (31), a bolt (35) which penetrates through the nut (33) and is in threaded fit with the nut, and a matching hole (34) arranged on the surface of the cover plate (22); at least three through holes (31) are uniformly distributed along the circumferential direction of the ring plate (21), and the outer wall of the nut (33) is welded on the inner wall of each through hole (31); the bolt (35) penetrates through the matching hole (34), and the bolt head of the bolt (35) abuts against the cover plate (22).
7. A counter-pressure pile driver according to claim 5 or 6, characterised in that: the ring plate (21) and the cover plate (22) are provided with a sealing ring (4) in a clamping mode, and all the bolts (35) penetrate through the sealing ring (4).
8. A counter-pressure pile driver according to claim 7, characterised in that: the bolt (35) is externally sleeved with a backing plate (5), and the backing plate (5) is clamped between the cover plate (22) and a bolt head of the bolt (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921494509.0U CN211006671U (en) | 2019-09-09 | 2019-09-09 | Counter-pressure pile pulling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921494509.0U CN211006671U (en) | 2019-09-09 | 2019-09-09 | Counter-pressure pile pulling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211006671U true CN211006671U (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921494509.0U Active CN211006671U (en) | 2019-09-09 | 2019-09-09 | Counter-pressure pile pulling device |
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| Country | Link |
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| CN (1) | CN211006671U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216157A (en) * | 2021-05-15 | 2021-08-06 | 湖南省筱沅水利水电建设有限公司 | Prefabricated tubular pile convenient to used repeatedly |
-
2019
- 2019-09-09 CN CN201921494509.0U patent/CN211006671U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216157A (en) * | 2021-05-15 | 2021-08-06 | 湖南省筱沅水利水电建设有限公司 | Prefabricated tubular pile convenient to used repeatedly |
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