CN212001136U - Rotary spraying pile for foundation pit support - Google Patents
Rotary spraying pile for foundation pit support Download PDFInfo
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- CN212001136U CN212001136U CN202020126505.3U CN202020126505U CN212001136U CN 212001136 U CN212001136 U CN 212001136U CN 202020126505 U CN202020126505 U CN 202020126505U CN 212001136 U CN212001136 U CN 212001136U
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Abstract
The utility model discloses a jet grouting pile for foundation pit support, which relates to the technical field of jet grouting pile drill bits, and the technical scheme is characterized by comprising a drill bit, a drill point fixed at the bottom of the drill bit and a liquid inlet pipe fixed at the top of the drill bit; the outer peripheral surface of the drill bit is provided with a liquid spraying hole, and the outer peripheral surface of the drill bit is hinged with two drilling blades; an impact hammer is fixed at one end of each drill blade, which is far away from the drill bit; an adjusting device for driving the drill blade to rotate upwards is arranged between each drill blade and the drill bit; the peripheral surface of the drill bit is provided with a limiting mechanism for preventing the drill blade from rotating downwards. The utility model provides a current spout stake drill bit can't satisfy the problem that the stake hole trompil of different internal diameters needs soon, reached and be convenient for carry out the effect of trompil to the hole stake of different internal diameters.
Description
Technical Field
The utility model relates to a spout stake drill bit technical field soon, more specifically the saying so, it relates to a spout stake soon for excavation supporting.
Background
At present, a high-pressure jet grouting pile is characterized in that a jet grouting pipe and a nozzle drill are arranged at a designed elevation at the bottom of the pile by using a drilling machine, prepared grout is sprayed out from a nozzle at the edge of the grouting pipe at a high speed after obtaining huge energy through a high-pressure generating device to form a stream with highly concentrated energy, a soil body is directly damaged, a drill rod is lifted while rotating in the spraying process, the grout and the soil body are fully stirred and mixed, and a columnar solidification body with a certain diameter is formed in the soil, so that a foundation is reinforced.
The prior art can refer to the Chinese utility model with the publication number of CN2818549, which discloses a high-pressure rotary jet grouting pile drill bit, comprising a drill bit body and a guniting hole, wherein two symmetrical drilling blades are arranged on the drill bit body above the guniting hole, the upper and lower surfaces of the drilling blades form an included angle with the horizontal plane, and the distance between the two ends of the drilling blades is matched with the diameter of the pile. The pile hole is pressed through the drill blade, so that the diameter of the pile cannot be reduced.
However, when the drill bit is used, when the required inner diameter of the pile hole is small, the actual inner diameter of the pile hole is too large due to the overlong length of the drill blade, so that the requirement of opening the pile holes with different inner diameters cannot be met.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a spout stake soon for excavation supporting, but it reaches the effect of being convenient for carry out the trompil to the hole stake of different internal diameters through the drilling leaf of free rotation.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a jet grouting pile for foundation pit supporting comprises a drill bit, a drill point fixed at the bottom of the drill bit and a liquid inlet pipe fixed at the top of the drill bit; the outer peripheral surface of the drill bit is provided with a liquid spraying hole, and the outer peripheral surface of the drill bit is hinged with two drilling blades; an impact hammer is fixed at one end of each drill blade, which is far away from the drill bit; an adjusting device for driving the drill blade to rotate upwards is arranged between each drill blade and the drill bit; and the peripheral surface of the drill bit is provided with a limiting mechanism for preventing the drill blade from rotating downwards.
By adopting the technical scheme, in the rotation process of the drill bit, the slurry is sprayed out of the slurry spraying hole to expand the pile hole; in the process of the rotation of the drill bit, the two drill blades rotate downwards from two sides respectively due to the action of centrifugal force. The impact hammer at the end part of the drill bit is abutted against the side wall of the pile hole to expand the diameter of the pile hole, and the drill blade can rotate freely, so that the rotation angle of the drill blade can be adjusted according to the inner diameter of the rotary hole, and the drilling requirement of the pile holes with different inner diameters can be met.
The present invention may be further configured in a preferred embodiment as: each group of adjusting devices comprises a hinge groove arranged on one side of the drill leaf close to the drill bit, a connecting rod hinged with the hinge groove, a sliding block hinged with one end of the connecting rod far away from the drill leaf and a sliding groove arranged on the peripheral surface of the drill bit; the connecting rod is hinged with one side of the sliding block, which is close to the drill leaf; the sliding block is arranged in the sliding groove in a sliding mode along the vertical direction; and a reset piece for driving the sliding block to move upwards is arranged between the sliding block and the sliding groove.
Through adopting above-mentioned technical scheme, bore the leaf and receive centrifugal force effect in-process of rotating downwards, the contained angle between connecting rod and the brill leaf diminishes, and the slider moves down, and the slider receives the ascending effort that resets piece and exert to the slider this moment to and the connecting rod is to the downward power that the slider applyed, reduce and bore the too big possibility of leaf angle change in the rotation process.
The present invention may be further configured in a preferred embodiment as: the reset piece is a spring fixed at the top of the sliding block, and one end, far away from the sliding block, of the spring is fixedly connected with the top surface of the sliding groove.
Through adopting above-mentioned technical scheme, the slider removes the in-process downwards, and the spring is in tensile state, and the spring provides ascending elasticity for the slider, and when the centrifugal action that the leaf of being convenient for bored received reduced, upwards reset through spring drive slider.
The present invention may be further configured in a preferred embodiment as: the top of the sliding block is fixed with a guide shaft, the top of the sliding groove is provided with a guide groove, and the guide shaft is arranged in the guide groove in a sliding manner along the vertical direction.
Through adopting above-mentioned technical scheme, the guide way provides the guide effect for the guiding axle, reduces the slider along the vertical removal in-process possibility of deviating from the track.
The present invention may be further configured in a preferred embodiment as: the guide groove top has seted up the spacing groove, the guiding axle top is fixed with spacing disk, spacing disk along vertical sliding set up in the spacing inslot.
Through adopting above-mentioned technical scheme, spacing disk provides limiting displacement for the guiding axle, reduces the possibility of guiding axle and guide way separation to reduce and bore the leaf and receive centrifugal force too big time, the possibility that can't reset.
The present invention may be further configured in a preferred embodiment as: the limiting mechanism comprises a sleeve which is arranged on the peripheral surface of the drill bit in a sliding mode along the vertical direction and two groups of fixing assemblies which are arranged between the sleeve and the drill bit and used for fixing the sleeve.
By adopting the technical scheme, after the sleeve is fixed, the distance of the downward movement of the sliding block is fixed, so that the downward rotation angle of the drilling blade is limited, and the drilling blade can meet the opening requirements of pile holes with different inner diameters.
The present invention may be further configured in a preferred embodiment as: the inner peripheral surface of the sleeve is relatively fixed with two sliding parts, and each sliding part is connected with the sliding groove in a sliding mode along the vertical direction.
Through adopting above-mentioned technical scheme, the spout provides the guide effect for sliding part, reduces the sleeve and takes place pivoted possibility along vertical removal in-process.
The present invention may be further configured in a preferred embodiment as: each group of fixing assemblies comprise a plurality of screw holes which are uniformly distributed on the sliding groove along the vertical direction and are far away from one side of the drilling blade and a screw rod which is rotatably arranged on the peripheral surface of the sleeve.
Through adopting above-mentioned technical scheme, through screw rod and screw threaded connection, fix the sleeve pipe, reduce the drill bit and rotate the possibility that in-process sleeve pipe moved down to make the drill bit rotate the in-process, the biggest turned angle who bores the leaf is fixed.
To sum up, the utility model discloses compare and have following beneficial effect in prior art:
1. the drill blade can rotate freely, so that the rotation angle of the drill blade can be adjusted conveniently according to the inner diameter of the rotating hole, and the drilling requirement of pile holes with different inner diameters can be met conveniently;
2. through the arrangement of the sliding block and the reset piece, when the centrifugal force on the drill blade is reduced, the drill blade is driven to rotate upwards through the reset piece;
3. the downward rotating angle of the drill blade is limited through the sleeve, so that the drill blade can meet the opening requirements of pile holes with different inner diameters.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a cross-sectional view of the central-prominence adjusting device of the present invention.
In the figure: 1. a drill bit; 11. drilling a tip; 12. a liquid inlet pipe; 13. a liquid ejection hole; 14. a circular cavity; 2. drilling leaves; 21. an impact hammer; 22. a guide shaft; 23. a guide groove; 24. a limiting groove; 25. limiting the wafer; 3. an adjustment device; 31. a hinge slot; 32. a connecting rod; 33. a slider; 34. a chute; 35. a reset member; 4. a limiting mechanism; 41. a sleeve; 42. a sliding part; 5. a fixing assembly; 51. a screw hole; 52. a screw.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): a jet grouting pile for foundation pit support is shown in figures 1 and 2 and comprises a drill bit 1, a drill tip 11 fixed at the bottom of the drill bit 1 and a liquid inlet pipe 12 fixed at the top of the drill bit 1. A round cavity 14 communicated with the liquid inlet pipe 12 is arranged in the drill bit 1. The outer peripheral surface of the drill bit 1 is provided with a liquid spraying hole 13 communicated with a circular cavity 14. The peripheral surface of the drill bit 1 is relatively hinged with two drill blades 2; and an impact hammer 21 is fixed at one end of each drill blade 2 far away from the drill bit 1. An adjusting device 3 for driving the drill blade 2 to rotate upwards is arranged between each drill blade 2 and the drill bit 1. The outer peripheral surface of the drill bit 1 is provided with a limiting mechanism 4 for preventing the drill blade 2 from rotating downwards. In the rotation process of the drill bit 1, the slurry is sprayed out of the slurry spraying hole to expand the pile hole; during the rotation of the drill bit 1, the two drill blades 2 rotate downwards from two sides respectively due to the centrifugal force. The impact hammer 21 at the end of the drill bit 1 abuts against the side wall of the pile hole to expand the diameter of the pile hole.
As shown in fig. 2, each set of adjusting devices 3 includes a hinge slot 31 opened on one side of the drill bit 2 close to the drill bit 1, a connecting rod 32 hinged to the hinge slot 31, a sliding block 33 hinged to one end of the connecting rod 32 far from the drill bit 2, and a sliding slot 34 opened on the outer circumferential surface of the drill bit 1. The connecting rod 32 is hinged with one side of the sliding block 33 close to the drill leaf 2. The slide block 33 is slidably arranged in the slide groove 34 along the vertical direction. A reset piece 35 for driving the sliding block 33 to move upwards is arranged between the sliding block 33 and the sliding groove 34. When the drill leaf 2 rotates downwards under the action of centrifugal force, the included angle between the connecting rod 32 and the drill leaf 2 is reduced, and the sliding block 33 moves downwards.
As shown in fig. 2, the restoring element 35 is a spring fixed on the top of the sliding block 33, and one end of the spring away from the sliding block 33 is fixedly connected with the top surface of the sliding slot 34. In the downward movement process of the sliding block 33, the spring is in a stretching state, the spring provides upward elastic force for the sliding block 33, and when the centrifugal action on the drilling blade 2 is reduced, the sliding block 33 is driven by the spring to reset upwards.
As shown in fig. 2, the top of the sliding block 33 is fixed with a guide shaft 22, the top of the sliding groove 34 is provided with a guide groove 23, and the guide shaft 22 is slidably arranged in the guide groove 23 along the vertical direction. The top of the guide groove 23 is provided with a limiting groove 24, the top of the guide shaft 22 is fixed with a limiting wafer 25, and the limiting wafer 25 is arranged in the limiting groove 24 in a sliding manner along the vertical direction. The guide groove 23 provides a guide function for the guide shaft 22, and reduces the possibility of the slide block 33 deviating from the track during the vertical movement. The limiting disc 25 provides a limiting function for the guide shaft 22, and reduces the possibility that the guide shaft 22 is separated from the guide groove 23.
As shown in fig. 1, the limiting mechanism 4 includes a sleeve 41 disposed on the outer peripheral surface of the drill bit 1 in a vertically sliding manner, and two sets of fixing assemblies 5 disposed between the sleeve 41 and the drill bit 1 and used for fixing the sleeve 41, two sliding portions 42 are relatively fixed on the inner peripheral surface of the sleeve 41, and each sliding portion 42 is connected with the sliding groove 34 in a vertically sliding manner. The slide groove 34 provides a guide function for the sliding portion 42, and reduces the possibility of rotation of the sleeve 41 during vertical movement.
As shown in fig. 1, each set of fixing elements 5 includes a plurality of screw holes 51 vertically and uniformly distributed on one side of the sliding groove 34 away from the drilling blade 2, and a screw 52 rotatably mounted on the outer peripheral surface of the sleeve 41. The screw 52 penetrates the sliding portion 42 and the screw 52 is screwed to the screw hole 51.
The working principle of the embodiment is as follows:
the sleeve 41 is fixed to the periphery of the drill bit 1 by moving the sleeve 41 downward according to the inside diameter of the pile hole to be bored and screwing the screw 52 into the screw hole 51. In the rotating process of the drill bit 1, due to the centrifugal force, the two drill blades 2 respectively rotate downwards from two sides; in the rotation process of the drilling blade 2, the included angle between the connecting rod 32 and the drilling blade 2 is reduced, the sliding block 33 moves downwards, when the sliding block 33 is abutted to the top of the sleeve 41, the sliding block 33 does not move downwards, at the moment, the impact hammer 21 rotating along the circumferential direction of the drill bit 1 is in contact with the inner wall of the pile hole, and the possibility of inward contraction of the inner wall of the pile hole is reduced.
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. A jet grouting pile for foundation pit supporting comprises a drill bit (1), a drill point (11) fixed at the bottom of the drill bit (1) and a liquid inlet pipe (12) fixed at the top of the drill bit (1); hydrojet hole (13), its characterized in that have been seted up to drill bit (1) outer peripheral face: the peripheral surface of the drill bit (1) is hinged with two drill blades (2); an impact hammer (21) is fixed at one end of each drill blade (2) far away from the drill bit (1); an adjusting device (3) for driving the drill blade (2) to rotate upwards is arranged between each drill blade (2) and the drill bit (1); the outer peripheral surface of the drill bit (1) is provided with a limiting mechanism (4) for preventing the drill blade (2) from rotating downwards.
2. The jet grouting pile for foundation pit support according to claim 1, wherein: each group of adjusting devices (3) comprises a hinge groove (31) arranged on one side, close to the drill bit (1), of the drill blade (2), a connecting rod (32) hinged with the hinge groove (31), a sliding block (33) hinged with one end, far away from the drill blade (2), of the connecting rod (32) and a sliding groove (34) arranged on the outer peripheral surface of the drill bit (1); the sliding block (33) is arranged in the sliding groove (34) in a sliding manner along the vertical direction; a reset piece (35) used for driving the sliding block (33) to move upwards is arranged between the sliding block (33) and the sliding groove (34).
3. The jet grouting pile for foundation pit support according to claim 2, wherein: the reset piece (35) is a spring fixed at the top of the sliding block (33), and one end, far away from the sliding block (33), of the spring is fixedly connected with the top surface of the sliding groove (34).
4. The jet grouting pile for foundation pit support according to claim 2, wherein: the top of the sliding block (33) is fixed with a guide shaft (22), the top of the sliding groove (34) is provided with a guide groove (23), and the guide shaft (22) is arranged in the guide groove (23) in a sliding mode along the vertical direction.
5. The jet grouting pile for foundation pit support according to claim 4, wherein: the top of the guide groove (23) is provided with a limiting groove (24), the top of the guide shaft (22) is fixed with a limiting wafer (25), and the limiting wafer (25) is arranged in the limiting groove (24) in a sliding mode along the vertical direction.
6. The jet grouting pile for foundation pit support according to claim 1, wherein: the limiting mechanism (4) comprises a sleeve (41) which is arranged on the outer peripheral surface of the drill bit (1) in a sliding mode along the vertical direction and two groups of fixing assemblies (5) which are arranged between the sleeve (41) and the drill bit (1) and used for fixing the sleeve (41).
7. The jet grouting pile for foundation pit support according to claim 6, wherein: two sliding parts (42) are relatively fixed on the inner peripheral surface of the sleeve (41), and each sliding part (42) is connected with the sliding groove (34) in a sliding mode along the vertical direction.
8. The jet grouting pile for foundation pit support according to claim 6, wherein: each group of fixing components (5) comprises a plurality of screw holes (51) which are uniformly distributed on one side of the sliding groove (34) far away from the drilling blade (2) along the vertical direction and a screw rod (52) which is rotatably installed on the peripheral surface of the sleeve (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020126505.3U CN212001136U (en) | 2020-01-19 | 2020-01-19 | Rotary spraying pile for foundation pit support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020126505.3U CN212001136U (en) | 2020-01-19 | 2020-01-19 | Rotary spraying pile for foundation pit support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212001136U true CN212001136U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020126505.3U Active CN212001136U (en) | 2020-01-19 | 2020-01-19 | Rotary spraying pile for foundation pit support |
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| Country | Link |
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| CN (1) | CN212001136U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113099779A (en) * | 2021-04-02 | 2021-07-13 | 安庆永发农林发展有限责任公司 | Rapid pit digging device for Chinese torreya planting and rapid pit digging method thereof |
| CN113653449A (en) * | 2021-10-18 | 2021-11-16 | 山东水利建设集团有限公司 | Environment-friendly cement high-pressure rotary spraying device for seepage-proofing construction and seepage-proofing method thereof |
-
2020
- 2020-01-19 CN CN202020126505.3U patent/CN212001136U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113099779A (en) * | 2021-04-02 | 2021-07-13 | 安庆永发农林发展有限责任公司 | Rapid pit digging device for Chinese torreya planting and rapid pit digging method thereof |
| CN113099779B (en) * | 2021-04-02 | 2022-07-22 | 安庆永发农林发展有限责任公司 | Rapid pit digging device for Chinese torreya planting and rapid pit digging method thereof |
| CN113653449A (en) * | 2021-10-18 | 2021-11-16 | 山东水利建设集团有限公司 | Environment-friendly cement high-pressure rotary spraying device for seepage-proofing construction and seepage-proofing method thereof |
| CN113653449B (en) * | 2021-10-18 | 2021-12-28 | 山东水利建设集团有限公司 | Environment-friendly cement high pressure spouts device soon for prevention of seepage construction |
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