CN212389251U - Square pile rotary digging device for one-time pore forming - Google Patents
Square pile rotary digging device for one-time pore forming Download PDFInfo
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- CN212389251U CN212389251U CN202020972436.8U CN202020972436U CN212389251U CN 212389251 U CN212389251 U CN 212389251U CN 202020972436 U CN202020972436 U CN 202020972436U CN 212389251 U CN212389251 U CN 212389251U
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- 239000011148 porous material Substances 0.000 title description 2
- 239000002689 soil Substances 0.000 claims abstract description 65
- 238000005553 drilling Methods 0.000 claims abstract description 44
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 238000005096 rolling process Methods 0.000 claims description 11
- 238000005527 soil sampling Methods 0.000 claims description 5
- 238000009412 basement excavation Methods 0.000 abstract description 11
- 229920000433 Lyocell Polymers 0.000 abstract description 10
- 230000005484 gravity Effects 0.000 abstract description 4
- ZJEWVOJUXVSQAT-UHFFFAOYSA-N Arborone Natural products OCC1C(OCC1(O)C(=O)c2ccc3OCOc3c2)c4ccc5OCOc5c4 ZJEWVOJUXVSQAT-UHFFFAOYSA-N 0.000 abstract 1
- 239000011324 bead Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a device is dug soon to square pile of disposable pore-forming relates to the pile foundation field, including the drilling rod, the square barrel that fetches earth, the transmission shaft, the lyocell set-square, the tooth arbor is with digging the drill bit soon, the square barrel that fetches earth is the bottom opening, the closed staving in top, drilling rod one end is run through the square barrel roof that fetches earth and extends in to the bucket and rotate with the square barrel that fetches earth and be connected, transmission shaft one end is connected with the drilling rod, the other end is connected with the lyocell set-square, the center pin of lyocell set-square passes through transmission shaft eccentric with the drilling rod center pin and is connected, the lower surface at lyocell set-square is fixed to tooth arbor one end, the other end extends the square barrel that fetches earth and is connected with digging the drill bit soon, it. The drill rod drives the Leluo triangular plate to rotate in the soil taking square barrel through the transmission shaft, the Leluo triangular plate is linked with a rotary drilling bit through the gear cutter shaft, the circular bead square pile is formed by excavation, the soil taking square barrel is cut into soil through a cutting wall under the action force of gravity and the drill rod, and the right-angle square pile is formed by excavation.
Description
Technical Field
The utility model relates to a device is dug soon to square pile of pile foundation field, especially disposable pore-forming.
Background
The traditional cast-in-situ bored pile has a circular section, and according to calculation, compared with a square pile, the perimeter and the area of the circular section are only 78% of those of the square pile with the diameter as the side length, and the corresponding bearing capacity of a single pile is only 78% of that of the square pile. For the same field area, the same pile spacing between piles and the same number of single piles, the square piles can provide larger foundation bearing capacity than the circular piles.
Due to the requirement of the bearing capacity of the structure, a certain amount of square piles, such as typical slide-resistant piles (square piles) and the like, are designed in the engineering construction. The most common pore-forming mode in the current construction is manual pore-forming, and the pore-forming mode has the disadvantages of high danger of operators, low pore-forming speed, low efficiency and high construction cost; and after the rotary drill is used for excavating the round hole, the pile of the square hole is excavated in a trimming mode, and the method has the advantages of various working procedures, complex construction, general hole forming speed and higher construction cost.
Patent No. 200620068205.4 discloses a drilling bored concrete square pile drill bit, though solved the problem of square bored concrete pile, it adopts "reuleaux triangle-shaped", need provide square mould when the rotatory pile is driven, and the square pile that bores is fillet square pile, not only uses loaded down with trivial details and can not satisfy the needs of right angle square pile.
Disclosure of Invention
The utility model discloses an invention purpose is, to above-mentioned problem, provides the square pile of disposable pore-forming and digs device soon, and the drilling rod is the square barrel rotation of fetching earth relatively, and the drilling rod passes through the transmission shaft and drives the lailuo set-square at the square barrel internal rotation of fetching earth, and the lailuo set-square is dug the drill bit through the linkage of tooth arbor soon and is carried out rotatory excavation and form fillet square pile, and the square barrel of fetching earth cuts into and forms the right angle square pile in the soil, can once pore-forming fast, the process is succinct, convenient construction, safe high efficiency and construction cost.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
the utility model provides a device is dug soon to square pile of disposable pore-forming, includes the drilling rod, still includes:
the soil taking square barrel is a barrel body with an opening at the bottom and a closed top, one end of the drill rod penetrates through the top wall of the soil taking square barrel and extends into the barrel, the drill rod is rotatably connected with the soil taking square barrel, and the outer wall and the inner wall of the bottom of the soil taking square barrel form an inclined upward cutting wall;
the transmission shaft is positioned in the soil taking square barrel, and one end of the transmission shaft is connected with the drill rod;
the Leluo triangular plate is positioned below the transmission shaft and in the soil taking square barrel, the upper surface of the Leluo triangular plate is connected to the other end of the transmission shaft, the central shaft of the Leluo triangular plate is eccentrically connected with the central shaft of the drill rod through the transmission shaft, and the drill rod enables the end angle of the Leluo triangular plate to rotate along the square track of the upper round angle of the inner wall of the soil taking square barrel in a fitting manner through the eccentricity of the transmission shaft;
the tooth cutter shaft is positioned in the soil taking square barrel, one end of the tooth cutter shaft is fixed on the lower surface of the Lailuo triangular plate, the other end of the tooth cutter shaft extends out of the soil taking square barrel, and the end angle of the tooth cutter shaft corresponds to that of the Lailuo triangular plate;
the rotary drilling bit is arranged at the free end of the tooth cutter shaft, the end angle of the rotary drilling bit corresponds to the end angle of the tooth cutter shaft, a soil cutting bit head is arranged on the lower surface of the rotary drilling bit, and the soil cutting bit head is distributed towards the axis of the three end angles in the center.
Preferably, the transmission shaft includes a first shaft rod, a second shaft rod and a third shaft rod which are sequentially connected from top to bottom, one end of the first shaft rod is fixed on the drill rod, the other end of the first shaft rod extends vertically and downwardly, the second shaft rod is fixed on the first shaft rod and extends obliquely and downwardly, one end of the third shaft rod is fixed on the second shaft rod and extends vertically and downwardly, and the other end of the third shaft rod is fixed on the upper surface of the lyocell triangle and is located on the central shaft of the lyocell triangle.
Preferably, a disc is further sleeved on the third shaft rod, the disc is internally tangent to the inner wall of the soil-taking square barrel, triangular cover plates are arranged on four end corners of the inner wall of the soil-taking square barrel and located above the disc, and the disc and the triangular cover plates form sliding seal.
Preferably, the transmission shaft includes a fourth shaft and a shaft sleeve, one end of the fourth shaft is fixed to the upper surface of the lyocell triangle and is located on the central axis of the lyocell triangle, and the other end of the fourth shaft extends vertically upward and is connected with the drill rod through the shaft sleeve.
Preferably, a disc is further sleeved on the fourth shaft rod, the disc is internally tangent to the inner wall of the soil-taking square barrel, triangular cover plates are arranged on four end corners of the inner wall of the soil-taking square barrel and located above the disc, and the disc and the triangular cover plates form sliding seal.
Preferably, the top wall of the soil-taking square barrel is provided with a through hole, a rolling bearing is arranged in the through hole, the drill rod penetrates through the rolling bearing and extends into the barrel, and the drill rod is rotatably connected with the rolling bearing.
Preferably, the length of the tooth cutter shaft extending out of the soil sampling square barrel is 10-20 cm.
Preferably, the rotary drilling bit is detachably connected with the serrated knife shaft.
Preferably, the rotary drilling bit is connected with the tooth cutter shaft in a clamping or threaded manner.
The utility model discloses device is dug soon to square pile of disposable pore-forming adopts the drilling rod, have the square barrel that fetches earth who cuts the wall, the transmission shaft, the lai luo triangle-shaped board, the tooth arbor is with digging the drill bit soon, the drilling rod is the square barrel rotation of fetching earth relatively, the drilling rod drives the lai luo triangle-shaped board at the square barrel internal rotation of fetching earth through the transmission shaft, the lai luo triangle-shaped board is dug the drill bit through the linkage of tooth arbor and is rotated the excavation soon, dig the drill bit limit of digging soon and crowd into the square barrel that fetches earth and form fillet square pile in digging the square barrel, further the square barrel of fetching earth cuts into in the soil through the wall under the drilling effect of self gravity and drilling rod, it continues to excavate the drill bit and excavate formation square pile soon.
Drawings
Fig. 1 is the structure schematic diagram of an embodiment of the square pile rotary digging device for one-time pore-forming of the utility model.
Fig. 2 is a schematic structural diagram of another embodiment of the square pile rotary digging device for one-time hole forming of the utility model.
Fig. 3 is a sectional view a-a in fig. 1.
Fig. 4 is a sectional view taken along line B-B in fig. 1.
Fig. 5 is a schematic structural diagram of a rotary drilling bit.
Fig. 6 is a schematic diagram of the geometric formation of the reuleaux triangle.
Fig. 7 is a motion trajectory of the reuleaux triangle.
In the attached drawing, 1-drill rod, 2-soil-taking square barrel, 21-wall cutting, 3-transmission shaft, 31-first shaft rod, 32-second shaft rod, 33-third shaft rod, 34-fourth shaft rod, 35-shaft sleeve, 4-Lailuo triangular plate, 5-tooth cutter shaft, 6-rotary drill bit, 61-soil cutter head, 7-rolling bearing, 8-disc and 9-triangular cover plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
The following describes the embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 3, the utility model discloses a device is dug soon to square pile of disposable pore-forming, including drilling rod 1, still include:
the soil taking square barrel 2 is a barrel body with an opening at the bottom and a closed top, one end of the drill rod 1 penetrates through the top wall of the soil taking square barrel 2 and extends into the barrel, and the drill rod 1 is rotatably connected with the soil taking square barrel 2;
the transmission shaft 3 is positioned in the soil taking square barrel 2, and one end of the transmission shaft 3 is connected with the drill rod 1;
the Lailou set square 4 is positioned below the transmission shaft 3 and in the soil taking square barrel 2, the upper surface of the Lailou set square 4 is connected with the other end of the transmission shaft 3, the central shaft of the Lailou set square 4 is eccentrically connected with the central shaft of the drill rod 1 through the transmission shaft 3, and the drill rod 1 is eccentrically connected through the transmission shaft 3, so that the end angle of the Lailou set square 4 is in fit rotation along the square track of the upper round angle of the inner wall of the soil taking square barrel 2;
fig. 6 shows a solid line portion where three dotted circles intersect, i.e., the reuleaux triangle a. Fig. 7 shows that the locus of motion of the triangle's apex is a rounded square d when the center b of the reuleaux triangle a follows the locus of the circle ' c '. The Lelo triangle 4 can be clamped, can not translate, can rotate freely, and has good limiting effect.
The tooth cutter shaft 5 is positioned in the soil taking square barrel 2, one end of the tooth cutter shaft 5 is fixed on the lower surface of the Lailuo triangular plate 4, the other end of the tooth cutter shaft 5 extends out of the soil taking square barrel 2, and the end angle of the tooth cutter shaft 5 corresponds to the end angle of the Lailuo triangular plate 4; in this embodiment, the serrated knife shaft 5 is a screw rod that spirally rises; the screw rod can continuously rise with soil.
The rotary drilling machine is characterized in that a drill bit 6 is rotationally drilled, the rotary drilling bit 6 is arranged at the free end of the tooth cutter shaft 5, the end angle of the rotary drilling bit 6 corresponds to the end angle of the tooth cutter shaft 5, a soil cutting bit 61 is arranged on the lower surface of the rotary drilling bit 6, and the soil cutting bit 61 is distributed towards the axis of three end angles in the center.
The outer wall and the inner wall of the bottom of the soil taking square barrel 2 form an upward inclined cutting wall 21. The inclined angle of the cutting wall 21 is 30-60 degrees. The arrangement of the cutting wall 21 can ensure that the soil sampling square barrel 2 can well cut into the soil.
The top wall of the soil sampling square barrel 2 is provided with a through hole (not shown), a rolling bearing 7 is arranged in the through hole, the drill rod 1 penetrates through the rolling bearing 7 and extends into the barrel, and the drill rod 1 is rotatably connected with the rolling bearing 7. The stable rotation of drilling rod 1 is ensured through setting up of antifriction bearing 7, realizes the effect that the square barrel 2 that fetches earth does not rotate simultaneously, and concrete drilling rod 1 links to each other with antifriction bearing 7 inner circle, and it can to fetch earth square barrel 2 and antifriction bearing 7 outer lane link to each other. In addition, other connection ways that can be directly realized by those skilled in the art according to the prior art can also replace the scheme. The rolling bearing 7 can prevent the soil-taking square barrel 2 from rotating, and the drill rod 1 rotates to drive the rotary drilling bit 6 to rotate for excavation through the transmission shaft 3.
The length of the tooth cutter shaft 5 extending out of the soil sampling square barrel 2 is 10-20 cm.
The rotary drill bit 6 can drill holes and dig soil and can extrude the soil into the soil taking square barrel 2. The soil taking square barrel 2 plays a role in soil loading, and also serves as a limiting ring for square excavation of the Lelo triangle 4 and the serrated knife shaft 5. The rotary drilling bit 6 is detachably connected with the tooth cutter shaft 5. The rotary drilling bit 6 is convenient to replace. In this embodiment, the rotary drilling bit 6 is connected with the cutter shaft 5 by clamping or screw threads. The installation and the disassembly are convenient.
As shown in fig. 1, the transmission shaft 3 includes a first shaft 31, a second shaft 32, and a third shaft 33, which are sequentially connected from top to bottom, one end of the first shaft 31 is fixed to the drill rod 1, the other end of the first shaft 31 extends vertically downward, the second shaft 32 is fixed to the first shaft 31 and extends obliquely downward, one end of the third shaft 33 is fixed to the second shaft 32 and extends vertically downward, and the other end of the third shaft 33 is fixed to the upper surface of the lyocell triangle 4 and is located on the central axis of the lyocell triangle 4. As shown in fig. 4, a disc 8 is further sleeved on the third shaft rod 33, the disc 8 is internally tangent to the inner wall of the soil-taking square barrel 2, triangular cover plates 9 are arranged on four end corners of the inner wall of the soil-taking square barrel 2, the triangular cover plates 9 are positioned above the disc 8, and the disc 8 and the triangular cover plates 9 form sliding seal. The arrangement of the disc 8 and the triangular cover plate 9 can effectively prevent soil below the Lelo triangular plate 4 from entering the soil taking square barrel 2 above the Lelo triangular plate 4 through a gap between the Lelo triangular plate 4 and the soil taking square barrel 2, so that the drill rod 1 is effectively protected and is not clamped by soil.
As shown in fig. 2, the transmission shaft 3 includes a fourth shaft 34 and a sleeve 35, one end of the fourth shaft 34 is fixed on the upper surface of the lelo triangle 4 and is located on the central axis of the lelo triangle 4, and the other end of the fourth shaft 34 extends vertically upward and is connected to the drill rod 1 through the sleeve 35. Still cup joint a disc 8 on the fourth shaft pole 34, disc 8 inscribe the inner wall of square tub 2 fetches earth, be equipped with the triangle apron on four end angles of 2 inner walls of square tub of fetches earth, triangle apron 9 is located 8 tops of disc, disc 8 with triangle apron 9 forms sliding seal. The arrangement of the disc 8 and the triangular cover plate 9 can effectively prevent soil below the Lelo triangular plate 4 from entering the soil taking square barrel 2 above the Lelo triangular plate 4 through gaps, so that the drill rod 1 is effectively protected and is not clamped by soil.
The utility model discloses the square pile of disposable pore-forming is dug device's theory of operation as follows soon:
firstly, installing the upper end of a drill rod 1 on a rotary excavating machine, aligning a square pile rotary excavating device to a hole, and starting the rotary excavating machine;
then, the drill rod 1 rotates and generates a downward force, the drill rod 1 is eccentric through the transmission shaft 3, so that the end corner of the Leluo triangular plate 4 rotates along the circular-corner square track of the inner wall of the soil-taking square barrel 2 in a fitting mode, the Leluo triangular plate 4 drives the rotary drilling bit 6 to carry out rotary excavation through the tooth cutter shaft 5, and a circular-corner square pile with the size being equal to that of the soil-taking square barrel 2 is excavated;
then, the rotary drilling bit 6 continuously smashes the soil layer and continuously drills the soil layer, and the rotary drilling bit 6 can drill holes and dig soil and can extrude the soil into the soil taking square barrel 2; under the action of self gravity and the drilling force of the drill rod 1, the cutting wall 21 at the bottom of the soil taking square barrel 2 is cut into the soil to form a right-angled square pile; after excavating for a period of time, the soil taking square barrel 2 is filled with soil, the rotary excavator lifts the drill rod 1 to lift the soil taking square barrel 2 to the ground, the drill rod 1 is rotated in the opposite direction, and the serrated knife shaft 5 is also rotated in the opposite direction, so that the soil in the soil taking square barrel 2 can be discharged;
and finally, repeating the excavation work to form the final right-angle square pile to meet the construction requirements.
Taking the excavation of a 20m square pile as an example: the hole forming time of the manual hole digging pile is 20-30 days generally; the hole forming time of the rotary-digging round hole matched with the trimming hole-digging pile is 7-10 days; and the utility model discloses the square pile of disposable pore-forming digs the device soon, but the direct mount digs the machine soon on, and it is nearly as the same as the technology is dug soon with the round hole, and the operation is very simple, saves round hole cooperation deburring and becomes the square pile process, and the pore-forming time is 0.3-1 day probably.
The utility model discloses the square pile of disposable pore-forming is dug the device soon and is adopted drilling rod 1, the square barrel of fetching earth 2 that has cut wall 21, the transmission shaft 3, lai luo set-square 4, tooth arbor 5 and dig drill bit 6 soon, drill rod 1 is the square barrel of fetching earth 2 relatively and is rotated, drill rod 1 drives lai luo set-square 4 through transmission shaft 3 and is digging drill bit 6 rotatory excavation of revolving soon through the linkage of tooth arbor 5, dig 6 limit excavation limits of drill bit soon and crowd into the square barrel of fetching earth 2 and form the fillet square pile, further, square barrel of fetching earth 2 cuts into in the earth through cutting wall 21 under the drilling effect of self gravity and drilling rod 1, it forms the right angle square pile to dig drill bit 6 continuously, have quick pore-forming one time, the process is succinct, convenient construction, safety and high efficiency and construction cost low grade advantage.
The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.
Claims (9)
1. The utility model provides a device is dug soon to square pile of disposable pore-forming, includes the drilling rod, its characterized in that: also comprises
The soil taking square barrel is a barrel body with an opening at the bottom and a closed top, one end of the drill rod penetrates through the top wall of the soil taking square barrel and extends into the barrel, the drill rod is rotatably connected with the soil taking square barrel, and the outer wall and the inner wall of the bottom of the soil taking square barrel form an inclined upward cutting wall;
the transmission shaft is positioned in the soil taking square barrel, and one end of the transmission shaft is connected with the drill rod;
the Leluo triangular plate is positioned below the transmission shaft and in the soil taking square barrel, the upper surface of the Leluo triangular plate is connected to the other end of the transmission shaft, the central shaft of the Leluo triangular plate is eccentrically connected with the central shaft of the drill rod through the transmission shaft, and the drill rod enables the end angle of the Leluo triangular plate to rotate along the rounded square track on the inner wall of the soil taking square barrel in a fitting manner through the eccentricity of the transmission shaft;
the tooth cutter shaft is positioned in the soil taking square barrel, one end of the tooth cutter shaft is fixed on the lower surface of the Lailuo triangular plate, the other end of the tooth cutter shaft extends out of the soil taking square barrel, and the end angle of the tooth cutter shaft corresponds to that of the Lailuo triangular plate;
the rotary drilling bit is arranged at the free end of the tooth cutter shaft, the end angle of the rotary drilling bit corresponds to the end angle of the tooth cutter shaft, a soil cutting bit head is arranged on the lower surface of the rotary drilling bit, and the soil cutting bit head is distributed towards the axis of the three end angles in the center.
2. The square pile rotary excavating device for forming holes at one time according to claim 1, which is characterized in that: the transmission shaft comprises a first shaft rod, a second shaft rod and a third shaft rod which are sequentially connected from top to bottom, one end of the first shaft rod is fixed on the drill rod, the other end of the first shaft rod extends vertically downwards, the second shaft rod is fixed on the first shaft rod and extends obliquely downwards, one end of the third shaft rod is fixed on the second shaft rod and extends vertically downwards, and the other end of the third shaft rod is fixed on the upper surface of the Leluo triangular plate and is positioned on the central shaft of the Leluo triangular plate.
3. The square pile rotary excavating device for forming holes at one time according to claim 2, which is characterized in that: and a disc is further sleeved on the third shaft lever, the disc is internally tangent to the inner wall of the soil-taking square barrel, triangular cover plates are arranged on four end corners of the inner wall of the soil-taking square barrel above the disc, and the disc and the triangular cover plates form sliding seal.
4. The square pile rotary excavating device for forming holes at one time according to claim 1, which is characterized in that: the transmission shaft comprises a fourth shaft rod and a shaft sleeve, one end of the fourth shaft rod is fixed on the upper surface of the Lelo triangular plate and is positioned on the central shaft of the Lelo triangular plate, and the other end of the fourth shaft rod vertically extends upwards to pass through the shaft sleeve to be connected with the drill rod.
5. The square pile rotary excavating device for forming holes at one time according to claim 4, which is characterized in that: and a disc is further sleeved on the fourth shaft lever, the disc is internally tangent to the inner wall of the soil-taking square barrel, triangular cover plates are arranged on four end corners of the inner wall of the soil-taking square barrel above the disc, and the disc and the triangular cover plates form sliding seal.
6. The square pile rotary excavating device for forming holes at one time according to claim 1, which is characterized in that: the top wall of the soil-taking square barrel is provided with a through hole, a rolling bearing is arranged in the through hole, the drill rod penetrates through the rolling bearing and extends into the barrel, and the drill rod is rotatably connected with the rolling bearing.
7. The square pile rotary excavating device for forming holes at one time according to claim 1, which is characterized in that: the length of the tooth cutter shaft extending out of the soil sampling square barrel is 10-20 cm.
8. The square pile rotary excavating device for forming holes at one time according to claim 1, which is characterized in that: the rotary drilling bit is detachably connected with the serrated knife shaft.
9. The square pile rotary excavating device for forming holes at one time according to claim 8, which is characterized in that: the rotary drilling bit is connected with the tooth cutter shaft in a clamping or threaded manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020972436.8U CN212389251U (en) | 2020-06-01 | 2020-06-01 | Square pile rotary digging device for one-time pore forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020972436.8U CN212389251U (en) | 2020-06-01 | 2020-06-01 | Square pile rotary digging device for one-time pore forming |
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| CN212389251U true CN212389251U (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020972436.8U Expired - Fee Related CN212389251U (en) | 2020-06-01 | 2020-06-01 | Square pile rotary digging device for one-time pore forming |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115246054A (en) * | 2022-09-26 | 2022-10-28 | 苏州楚焱新能源有限公司 | Electric element welding device for energy-saving equipment production |
-
2020
- 2020-06-01 CN CN202020972436.8U patent/CN212389251U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115246054A (en) * | 2022-09-26 | 2022-10-28 | 苏州楚焱新能源有限公司 | Electric element welding device for energy-saving equipment production |
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Granted publication date: 20210122 |