CN109083146B - Method for vertically setting upright post and inclined strut of pile driver - Google Patents
Method for vertically setting upright post and inclined strut of pile driver Download PDFInfo
- Publication number
- CN109083146B CN109083146B CN201710784499.3A CN201710784499A CN109083146B CN 109083146 B CN109083146 B CN 109083146B CN 201710784499 A CN201710784499 A CN 201710784499A CN 109083146 B CN109083146 B CN 109083146B
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- column
- diagonal brace
- brace
- diagonal
- link member
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
- E02D7/16—Scaffolds or supports for drivers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/10—Power-driven drivers with pressure-actuated hammer, i.e. the pressure fluid acting directly on the hammer structure
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Jib Cranes (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a vertical setting method of an upright post and an inclined strut of a pile driver. In a pile driver, an upper inclined strut member and a lower inclined strut member are connected by a connecting support to form an inclined strut, a 1 st reinforcing connecting rod member and a 2 nd reinforcing connecting rod member are arranged, and when the pile driver is assembled, the following steps are sequentially performed: a preassembly step of assembling the horizontal column, the upper diagonal brace member and the lower diagonal brace member and fixing a connecting support member, which connects the 1 st reinforcing link member and the 2 nd reinforcing link member, to the column; a support connection step of connecting the upper diagonal member and the lower diagonal member to the connection support; a link member connecting step of releasing the fixation between the connecting support and the column, lifting the connecting support, and connecting the 1 st reinforcing link member and the 2 nd reinforcing link member to the column; and a diagonal brace working cylinder connecting process of connecting the diagonal brace working cylinder to the chassis while hoisting the upright column and the diagonal brace.
Description
Technical Field
The present invention relates to a method for erecting a column and a brace of a pile driver, and more particularly, to a method for erecting a column and a brace of a three-point support type pile driver in which a pair of left and right braces support the column.
Background
Conventionally, a three-point support pile driver includes a column provided at a front portion of a chassis so as to be able to rise and fall, and a pair of braces for supporting the column from behind when the column is erected, and the braces are formed of a cylindrical integral member having an upper end connected to the column and a lower end connected to the chassis via a brace cylinder (see, for example, patent document 1). In addition, the upright of such a pile driver is vertically arranged on the chassis by: the method of connecting the front bracket of the chassis to the upright in a horizontal state includes connecting the front end of the diagonal brace to the middle part of the upright, and then hoisting the middle part of the upright with a crane to connect the rear end of the diagonal brace to the chassis (see, for example, patent document 2).
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2007-31977
Patent document 2: japanese patent laid-open No. 2001-40663
Disclosure of Invention
Problems to be solved by the invention
However, in a large pile driver, the length of the column is long and the length of the brace is also long, and there is a possibility that the bending strength is insufficient in the brace formed of an integral member as in patent document 1. If the bending strength of the diagonal brace is insufficient, the diagonal brace may be bent when the upper rotating body of the chassis is rotated or driven, or when the working device is pushed in, and the column may become unstable, thereby impairing safety. Further, it is conceivable to provide a reinforcing member to the diagonal brace to increase the bending strength of the diagonal brace, but if the reinforcing member is provided to the diagonal brace, the reinforcing member may hinder the erection of the vertical column or the diagonal brace.
Accordingly, an object of the present invention is to provide a method for erecting a pile driver column and a brace, which can erect a pile driver column and a brace having improved bending strength of the brace on a chassis.
Means for solving the problems
In order to achieve the above object, the present invention provides a pile driver in which a pair of left and right braces for supporting an upright standing in front of a chassis are formed by an upper brace member and a lower brace member, an upper end portion of the upper brace member is connected to an upper portion of the upright, a lower end portion of the lower brace member is connected to a rear portion of the chassis via a brace cylinder, the upper brace member and the lower brace member are respectively connected to each other so as to be rotatable via a detachable connection support that connects intermediate portions of the two braces, and a 1 st reinforcing link member that connects one end side of the connection support to the upright and a 2 nd reinforcing link member that connects the other end side of the connection support to the upright are detachably provided, the method for vertically setting the upright post and the diagonal brace of the pile driver is characterized in that the following steps are sequentially carried out: a pre-assembly step of assembling the column, the upper diagonal member, and the lower diagonal member in a state of being laid down in front of the chassis, and fixing a central portion of the connecting support, both end portions of which are connected to one end portion of the 1 st reinforcing link member and one end portion of the 2 nd reinforcing link member, in a state of being set in advance to the assembled column; a diagonal brace connecting step of connecting lower end portions of two upper diagonal brace members, each having an upper end portion connected to an upper portion of the column, to both side portions of the connecting brace, and connecting upper end portions of two lower diagonal brace members, each having a lower end portion connected to the diagonal brace cylinder, to both side portions of the connecting brace; a link member coupling step of releasing the fixation between the coupling brace and the column, lifting the coupling brace, and coupling the other end portion of the 1 st reinforcing link member and the other end portion of the 2 nd reinforcing link member to the column, respectively; and a diagonal brace cylinder connecting step of connecting a lower end portion of the diagonal brace cylinder to a rear portion of the chassis while lifting an upper portion of the column to pull up the column and the diagonal brace.
ADVANTAGEOUS EFFECTS OF INVENTION
In the method for erecting a column and a brace of a pile driver according to the present invention, the brace is divided into an upper brace member and a lower brace member, the upper brace member and the lower brace member are rotatably connected by a connecting support, and a 1 st reinforcing link member and a 2 nd reinforcing link member are provided between the connecting support and the column, so that the bending strength and workability of the brace are improved.
Drawings
Fig. 1 is a side view showing a pile driver according to an embodiment of the present invention.
Figure 2 is a rear view of the pile driver.
Fig. 3 is a side view of the main part of the pile driver.
Fig. 4 is a sectional view IV-IV of fig. 3.
Fig. 5 is a rear view showing a main part of an embodiment of the present invention.
Fig. 6 is a plan view of the pile driver in a state where the column and the brace of the pile driver are placed in front.
Fig. 7 is a side view of the pile driver with the column and the brace of the pile driver placed in front.
Fig. 8 is a sectional view VIII-VIII of fig. 7.
Fig. 9 is a side view of a pile driver showing a process of attaching the 1 st reinforcing link member and the 2 nd reinforcing link member, which is an embodiment of the present invention.
Fig. 10 is a side view of the pile driver showing a process of erecting the column and the brace of the pile driver.
Description of the reference numerals
11. A pile driver; 12. a chassis; 13. a lower traveling body; 14. an upper rotating body; 15. a column; 15a, a column base member; 15b, a pillar member; 16. a front jack; 17. a column bracket; 18. a rear jack; 19. a sprag cylinder mounting portion; 20. a post holder; 21. a diagonal bracing working cylinder; 22. bracing; 22a, an upper sprag member; 22b, a lower sprag member; 22c, an upper sprag connection portion; 22d, a lower sprag connection portion; 23. a diagonal brace connecting bracket; 23a, a connecting arm; 23b, connecting brackets during assembly; 24. a wire rope; 25. a top pulley block; 26. a backpull rope; 27. a tripod; 28a, a lifting rope; 28b, a hanging rope; 29. connecting a support member; 29a, an upper connecting portion; 29b, a lower connecting portion; 29c, the 1 st reinforcing link connecting portion; 29d, the 2 nd reinforcing link connecting portion; 29e, an inner connecting portion; 29f, a column connection bracket; 30. 1 st connecting pin; 31. a 2 nd connecting pin; 32. 1 st reinforcing link member; 32a, the 1 st connecting part; 32b, the 2 nd connecting part; 32c, the 3 rd connecting part; 33. a 2 nd reinforcing link member; 33a, the 1 st connecting part; 33b, the 2 nd connecting part; 33c, the 3 rd connecting part; 34. a 3 rd connecting pin; 35. a 4 th connecting pin; 36. a 5 th connecting pin; 37. a 6 th connecting pin; 38. a 7 th connecting pin; 39. an 8 th connecting pin; 40. a diagonal bracing support; 41. a pin; 42. 43, steel wire rope.
Detailed Description
Fig. 1 to 5 show an example of one form of a three-point support type pile driver 11 according to the present invention, in which an upper rotating body 14 is rotatably provided on an upper portion of a lower traveling body 13 having a crawler via a slewing bearing in a chassis 12 of the pile driver 11. A column bracket 17 is provided at the front of the upper rotating body 14, a column 15 and front jacks 16 and 16 are mounted on the column bracket 17, and rear jacks 18 and a sprag cylinder mounting portion 19 are provided at the rear of the upper rotating body 14.
The column 15 is formed by connecting a plurality of column members 15b to an upper portion of a column base member 15a, and the column base member 15a is attached to the column bracket 17 so as to be able to tilt forward, backward, leftward, and rightward with respect to the column bracket 17. A column holder 20 for holding the column 15 is provided at an upper portion of the column 15, tip ends of a pair of left and right stays 22, 22 connected to a rear portion of the upper rotating body 14 via stay cylinders 21, 21 are connected to a rear portion of the column holder 20, and the column 15 is supported from the rear by the stays 22, 22. A diagonal brace connecting bracket 23 is provided on the side of the intermediate portion of the column 15 opposite to the diagonal braces 22, and the diagonal brace connecting bracket 23 includes a pair of connecting arms 23a, 23a protruding in the left-right direction and two-forked assembly connecting brackets 23b, 23b protruding from both side portions of the outer end surface and used in column assembly.
A top sheave block 25 including a plurality of guide pulleys rotatably around which a wire rope 24 is wound is provided on the top of the column 15, and various working devices such as an auger driving device (not shown) for driving an auger that can be raised and lowered along the column 15 are provided on the front surface of the column 15. A back stay 26 for preventing the column 15 from being deflected by a load applied during operation is provided between the rear side of the top sheave block 25 and the upper rotating body 14. A tripod (gantry)27 is provided upright at the rear of the upper rotating body 14, and a lifting rope 28a from a lifting winch (not shown) is connected to the sprag connecting bracket 23 via a hanging rope 28 b.
The sprags 22 and 22 are members in which upper sprag members 22a and lower sprag members 22b and 22b are rotatably connected by a connection support 29 connecting intermediate portions of the two sprags 22 and 22, the upper sprag members 22a and 22a are connected to the column holder 20, the lower sprag members 22b and 22b are connected to the upper rotating body 14 by sprag cylinders 21 and 21, upper sprag connection portions 22c and 22c connected to the connection support 29 are formed at lower ends of the upper sprag members 22a and 22a, and lower sprag connection portions 22d and 22d connected to the connection support 29 are formed at upper ends of the lower sprag members 22b and 22 b.
The coupling support 29 has bifurcated upper coupling portions 29a, 29a and bifurcated lower coupling portions 29b, 29b on one side portion and the other side portion, respectively, the upper coupling portions 29a, 29a are coupled to the upper sprag coupling portions 22c, 22c via 1 st coupling pins 30, 30 so that the upper sprag coupling portions 22c, 22c are rotatable, respectively, and the lower coupling portions 29b, 29b are coupled to the lower sprag coupling portions 22d, 22d via 2 nd coupling pins 31, 31 so that the lower sprag coupling portions 22d, 22d are rotatable, respectively. The lower sprag connection portions 22d and the 2 nd connection pins 31 are connected by spherical bushes (not shown), and the lower sprag members 22b are connected so as to be rotatable in the radial direction and the axial direction of the 2 nd connection pins 31. Further, a 1 st reinforcing link connecting portion 29c is formed at one end portion of the connecting support 29, a 2 nd reinforcing link connecting portion 29d is formed at the other end portion of the connecting support 29, the 1 st reinforcing link connecting portion 29c protrudes outward in the longitudinal direction and is connected to the 1 st reinforcing link member 32 so as to enable the 1 st reinforcing link member 32 to rotate, and the 2 nd reinforcing link connecting portion 29d protrudes outward in the longitudinal direction and is connected to the 2 nd reinforcing link member 33 so as to enable the 2 nd reinforcing link member 33 to rotate. Further, inner connecting portions 29e and 29e protruding in the column direction are provided at the connecting support 29 on the longitudinal center side of the upper connecting portions 29a and 29a, respectively. Further, a pair of column coupling brackets 29f, 29f for coupling to the column 15 at the time of assembly are provided at the longitudinal center portion of the coupling stay 29.
The 1 st reinforcing link member 32 is provided at one end with a 1 st link portion 32a in a bifurcated shape which is turnably connected to the 1 st reinforcing link connecting portion 29c by a 3 rd link pin 34, is provided at the other end with a 2 nd link portion 32b in a bifurcated shape which is connected to the one link arm 23a of the sprag link bracket 23 by a 4 th link pin 35, and is provided in the vicinity of the 1 st link portion 32a with a 3 rd link portion 32c which protrudes toward the 2 nd reinforcing link member side and is connected to the one inner link portion 29e by a 5 th link pin 36.
The 2 nd reinforcing link member 33 is provided at one end portion with a 1 st link portion 33a in a bifurcated shape which is turnably coupled to the 2 nd reinforcing link coupling portion 29d via a 6 th link pin 37, is provided at the other end portion with a 2 nd link portion 33b in a bifurcated shape which is coupled to the other link arm 23a of the sprag link bracket 23 via a 7 th link pin 38, and is provided in the vicinity of the 1 st link portion 33a with a 3 rd link portion 33c which protrudes toward the 1 st reinforcing link member side and is coupled to the other inner link portion 29e via an 8 th link pin 39.
The coupling brace 29, the 1 st reinforcing link member 32, and the 2 nd reinforcing link member 33 formed in this manner are arranged in a triangular shape with the column 15, the 3 rd coupling pin 34, and the 6 th coupling pin 37 as vertexes at intermediate portions of the diagonal braces 22, 22 in an assembled state in which the column 15 is erected and the column 15 is supported by the diagonal braces 22, 22.
Next, a method of erecting the column and the diagonal brace will be described with reference to fig. 6 to 10.
First, as shown in fig. 6 to 8, the column base member 15a is laid down forward of the chassis 12, a plurality of column members 15b are connected to the tip end portion of the column base member 15a, and the head pulley block 25 is attached to the top portion of the column 15. Next, the brace bracket 40 provided at the lower portion of the column 15 is expanded in the left-right direction, the lower brace members 22b, 22b to which the brace cylinders 21, 21 are respectively attached at the lower ends thereof are disposed in an inverted state at the upper portion of the brace bracket 40, the upper brace members 22a, 22a are disposed in an inverted state continuously with the upper end portions of the lower brace members 22b, and the upper ends of the upper brace members 22a, 22a are connected to the column holder 20. Then, the tripod 27 is erected on the upper rotating body 14, the lifting rope 28a from a lifting winch (not shown) is connected to the diagonal brace connecting bracket 23 via the hanging rope 28b, and the back stay 26 is connected to the top block 25 and the upper rotating body 14.
On the other hand, the 1 st reinforcing link coupling portion 29c of the coupling stay 29 is inserted into the bifurcated 1 st coupling portion 32a provided in the 1 st reinforcing link member 32, the 1 st reinforcing link coupling portion 29c and the 1 st coupling portion 32a are rotatably coupled by the 3 rd coupling pin 34, and one of the inner coupling portions 29e and the 3 rd coupling portion 32c is rotatably coupled by the 5 th coupling pin 36. Then, the 2 nd reinforcing link coupling portion 29d of the coupling brace 29 is inserted into the inside of the 1 st bifurcated coupling portion 33a provided in the 2 nd reinforcing link member 33, the 2 nd reinforcing link coupling portion 29d and the 1 st coupling portion 33a are rotatably coupled by the 6 th coupling pin 37, and the other inner coupling portion 29e and the 3 rd coupling portion 33c are rotatably coupled by the 8 th coupling pin 39, whereby the coupling brace 29, the 1 st reinforcing link member 32, and the 2 nd reinforcing link member 33 are coupled in advance.
Next, the column coupling brackets 29f, 29f of the coupling stay 29 are inserted into the inside of the bifurcated assembly- time coupling brackets 23b, 23b provided on the column 15, respectively, and the column coupling brackets 29f, 29f and the assembly- time coupling brackets 23b, 23b are coupled by the pins 41, whereby the coupling stay 29 in a state in which the 1 st reinforcing link member 32 and the 2 nd reinforcing link member 33 are coupled is fixed (pre-assembly step).
Next, the upper sprag connecting portions 22c, 22c of the upper sprag members 22a, 22a are inserted into the inside of the bifurcated upper connecting portions 29a, 29a provided on the connecting support 29, respectively, the upper sprag connecting portions 22c, 22c and the upper connecting portions 29a, 29a are rotatably connected by the 1 st connecting pins 30, respectively, the lower sprag connecting portions 22d, 22d of the lower sprag members 22b, 22b are inserted into the inside of the bifurcated lower connecting portions 29b, respectively, and the lower sprag connecting portions 22d, 22d and the lower connecting portions 29b, 29b are rotatably connected by the 2 nd connecting pins 31, respectively. Thereby, the upper sprag member 22a and the lower sprag member 22b are rotatably coupled to each other via the coupling support 29 (sprag member coupling step).
Next, as shown in fig. 9, the pins 41 and 41 are pulled out to release the connection between the connection brace 29 and the column 15, and the wire rope 42 is hung on the 1 st connection pin 30 and the 2 nd connection pin 31 to perform a hoisting operation. Then, one connecting arm 23a of the sprag connecting bracket 23 is inserted into the bifurcated 2 nd connecting portion 32b of the 1 st reinforcing link member 32 suspended together with the connecting stay 29, the one connecting arm 23a and the 2 nd connecting portion 32b are rotatably connected by the 4 th connecting pin 35, the other connecting arm 23a of the sprag connecting bracket 23 is inserted into the bifurcated 2 nd connecting portion 33b of the 2 nd reinforcing link member 33, and the other connecting arm 23a and the 2 nd connecting portion 33b are rotatably connected by the 7 th connecting pin 38 (link member connecting step).
Next, as shown in fig. 10, the column 15 is lifted up by the wire rope 43 and the raising/lowering rope 28a provided on the tip end side of the column 15, the column 15 is raised in the vertical direction, the struts 22, 22 are raised, and the strut cylinders 21, 21 attached to the lower end portions of the lower strut members 22b, 22b are attached to the strut cylinder attachment portions 19, respectively (strut cylinder connection step).
At this time, by adjusting the position and length of the strut bracket 40 in advance, the strut cylinders 21, 21 are disposed in the vicinity of the strut cylinder attachment portions 19, 19 in accordance with the rising of the struts 22, and thus the strut cylinders 21, 21 can be attached well. Further, operations such as wire rope hanging, hydraulic piping arrangement, and the like are performed in the same manner as in the conventional pile driver, and detailed description thereof will be omitted.
In the pile driver 11 formed as described above, the struts 22 are divided into the upper strut member 22a and the lower strut member 22b, whereby the strut members can be formed shorter than conventional strut members. Further, the upper sprag member 22a and the lower sprag member 22b are rotatably coupled by the coupling support 29, and the 1 st reinforcing link member 32 that couples one end side of the coupling support 29 and the pillar 15 and the 2 nd reinforcing link member 33 that couples the other end side of the coupling support 29 and the pillar 15 are provided, whereby the bending strength of the sprag 22 can be improved without increasing the weight. Further, when the upright 15 is adjusted in the front-rear direction or in the angle, the upper diagonal support member 22a and the lower diagonal support member 22b can support the upright 15 following the movement of the upright 15, and therefore, workability is not impaired. Further, since the connection stay 29, the 1 st reinforcing link member 32, and the 2 nd reinforcing link member 33 are arranged in a triangular shape having the upright 15, the 3 rd connecting pin 34, and the 6 th connecting pin 37 as vertexes at the intermediate portion of the sprags 22 and 22, the upright 15 can be always supported in a stable state.
In order to erect the column 15 and the respective stays 22 on the chassis 12, the column 15 and the stays 22, 22 can be erected on the chassis 12 while the upper stay member 22a, the lower stay member 22b, the connecting brace 29, the 1 st reinforcing link member 32, and the 2 nd reinforcing link member 33 are assembled well by performing the pre-assembly process, the stay connecting process, the link member connecting process, and the stay cylinder connecting process in this order in a state where the column 15 and the stays 22, 22 are laid down laterally forward of the chassis 12 as described above.
Claims (1)
1. A method for erecting a column and a diagonal brace of a pile driver, in which a pair of right and left diagonal braces for supporting a column erected in front of a chassis are formed by an upper diagonal brace member and a lower diagonal brace member, an upper end portion of the upper diagonal brace member is connected to an upper portion of the column, a lower end portion of the lower diagonal brace member is connected to a rear portion of the chassis via a diagonal brace cylinder, the upper diagonal brace member and the lower diagonal brace member are respectively rotatably connected via a detachable connection support that connects intermediate portions of both diagonal braces, and a 1 st reinforcing link member that connects one end side of the connection support to the column and a 2 nd reinforcing link member that connects the other end side of the connection support to the column are detachably provided,
in the method for vertically setting the upright post and the inclined strut of the pile driver, the following steps are sequentially performed:
a pre-assembly step of assembling the column, the upper diagonal member, and the lower diagonal member in a state of being laid down in front of the chassis, and fixing a central portion of the connecting support, both end portions of which are connected to one end portion of the 1 st reinforcing link member and one end portion of the 2 nd reinforcing link member, in a state of being set in advance to the assembled column;
a diagonal brace connecting step of connecting lower end portions of two upper diagonal brace members, each having an upper end portion connected to an upper portion of the column, to both side portions of the connecting brace, and connecting upper end portions of two lower diagonal brace members, each having a lower end portion connected to the diagonal brace cylinder, to both side portions of the connecting brace;
a link member coupling step of releasing the fixation between the coupling brace and the column, lifting the coupling brace, and coupling the other end portion of the 1 st reinforcing link member and the other end portion of the 2 nd reinforcing link member to the column, respectively; and
and a diagonal brace cylinder connecting step of connecting the lower end portion of the diagonal brace cylinder to the rear portion of the chassis while lifting the upper portion of the column and pulling up the column and the diagonal brace.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-115820 | 2017-06-13 | ||
| JP2017115820A JP6214805B1 (en) | 2017-06-13 | 2017-06-13 | Pile driver leader and backstay standing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109083146A CN109083146A (en) | 2018-12-25 |
| CN109083146B true CN109083146B (en) | 2021-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710784499.3A Active CN109083146B (en) | 2017-06-13 | 2017-09-04 | Method for vertically setting upright post and inclined strut of pile driver |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6214805B1 (en) |
| KR (1) | KR101851503B1 (en) |
| CN (1) | CN109083146B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102557805B1 (en) | 2021-08-27 | 2023-07-20 | 신의페트라 주식회사 | Split joint for stayarm of pile driver and Fabricating method thereof |
| CN114182732A (en) * | 2021-12-16 | 2022-03-15 | 山河智能装备股份有限公司 | Pile frame and auxiliary supporting device for inclined supporting rod of pile frame |
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- 2017-06-13 JP JP2017115820A patent/JP6214805B1/en active Active
- 2017-08-22 KR KR1020170106203A patent/KR101851503B1/en active IP Right Grant
- 2017-09-04 CN CN201710784499.3A patent/CN109083146B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109083146A (en) | 2018-12-25 |
| JP2019002161A (en) | 2019-01-10 |
| KR101851503B1 (en) | 2018-04-23 |
| JP6214805B1 (en) | 2017-10-18 |
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