Drilling device and method for combined power transmission tower foundation pile construction

Abstract

The invention belongs to the technical field of power transmission tower foundation pile construction, and provides a drilling device and method for combined power transmission tower foundation pile construction, and the drilling device comprises a vertical anchor rod drilling mechanism and a plurality of barb drilling mechanisms arranged on the vertical anchor rod drilling mechanism through an adjusting mechanism; the second connecting rod is pulled through the operation assembly, the connecting piece and the first connecting rod are driven to ascend, and the barb drilling mechanism is combined to the vertical anchor rod drilling mechanism; drilling is conducted through the vertical anchor rod drilling mechanism; after the drilling depth meets the requirement, a second connecting rod, a connecting piece and a first connecting rod descend by loosening an operation assembly, and the barb drilling mechanism is dispersed out of the vertical anchor rod drilling mechanism; barb holes are drilled in the inner wall of the drilled hole through the multiple dispersed vertical anchor rod drilling mechanisms; according to drilling of the barb hole, the installation requirement of the barb foundation pile can be met, a large amount of soil does not need to be taken, and drilling of a large-length barb hole can be achieved on the basis that the size of an excavated foundation pit is not increased.

Description

Technical Field

[0001] The invention belongs to the technical field of transmission tower foundation pile construction, and in particular relates to a drilling device and method for construction of combined transmission tower foundation piles. Background Art

[0002] A transmission tower is a structure that supports the conductors and lightning conductors of high-voltage or ultra-high-voltage overhead transmission lines. The transmission tower is a tall structure, and the lateral load it receives mainly comes from external wind force and the pulling force of the transmission lines on adjacent transmission towers. The transmission tower has high requirements for the foundation's anti-pullout capacity. To ensure safety, the transmission lines are all located in remote areas far away from human habitation and sparsely populated. In order to ensure the firmness of the transmission tower, the foundation used to support the transmission tower must be fixed on the piles extending into the ground, and then rely on the lateral resistance between the pile body and the soil layer to resist the lateral load on the transmission tower.

[0003] Existing foundation piles all adopt a conventional whole root shape. In order to increase the pull-out bearing capacity of the foundation piles, the length of the foundation piles can only be increased. However, the longer the foundation piles are, the more inconvenient it is to transport construction materials. In this way, on the one hand, the total amount of excavated soil is large, and a considerable part of the soil cannot be backfilled, resulting in a large amount of abandoned soil. On the other hand, since the area is relatively remote and even the roads are inaccessible, it is difficult to transport the necessary materials and abandoned soil required for construction. In order to improve the pull-out bearing capacity, some foundation piles are equipped with barbs, which can reduce the size of the foundation piles to a certain extent. However, due to the setting of the barbs, the excavation size of the foundation pit needs to be increased to allow the barbs to enter the foundation pit. The longer the barbs are, the larger the size of the foundation pit needs to be excavated, which increases the construction difficulty and the amount of excavated soil. When the barbs are short, the pull-out effect is small and the significance is not great. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a drilling device and method for the construction of combined transmission tower foundation piles, wherein drilling is performed by a vertical anchor drilling mechanism; after the drilling depth meets the requirement, the second connecting rod, the connecting piece and the first connecting rod are lowered by loosening the operating assembly, and the barb drilling mechanism is dispersed outside the vertical anchor drilling mechanism; barb holes are drilled on the inner wall of the borehole by the dispersed multiple vertical anchor drilling mechanisms; the drilling of barb holes can meet the installation requirements of barb foundation piles, does not require a large amount of soil excavation, and can achieve the drilling of barb holes of larger length without increasing the size of the excavation pit, thereby meeting the barb length requirement and ensuring the pull-out bearing capacity.

[0005] In order to achieve the above-mentioned object, in a first aspect, the present invention provides a drilling device for construction of combined transmission tower foundation piles, which adopts the following technical scheme:

[0006] A drilling device for construction of combined transmission tower foundation piles, comprising a vertical anchor drilling mechanism, and a plurality of barbed drilling mechanisms arranged on the vertical anchor drilling mechanism through an adjusting mechanism;

[0007] The adjustment mechanism includes a fixing member arranged at one end of the vertical anchor drilling mechanism, a connecting member sleeved on the vertical anchor drilling mechanism, and an operating component arranged at the other end of the vertical anchor drilling mechanism; a plurality of barb drilling mechanisms are hinged to the fixing member, a first connecting rod is arranged between the barb drilling mechanism and the connecting member, and a second connecting rod is arranged between the connecting member and the operating component.

[0008] Furthermore, a first power source is provided at one end of the vertical anchor drilling mechanism, and a first drilling tool is provided at the other end.

[0009] Furthermore, the fixing member includes a fixing block, an internal thread provided on the fixing block, a plurality of first connecting grooves provided on the fixing block, and a connecting column arranged in the first connecting groove; and an external thread matching the internal thread is arranged on the vertical anchor drilling mechanism.

[0010] Furthermore, the barbed drilling mechanism includes a barbed rod, and a fifth connecting hole and a sixth connecting hole arranged on the barbed rod; the fifth connecting hole is hinged in the first connecting groove through the connecting column; and the sixth connecting hole is hinged to the first connecting rod.

[0011] Furthermore, the connecting member includes a connecting block, a sleeve arranged on the connecting block, a plurality of second connecting grooves opened on the connecting block, and a rib-piercing hole arranged in the second connecting groove; the first connecting rod and the second connecting rod are connected to the second connecting groove.

[0012] Furthermore, the vertical anchor drilling mechanism is provided with an ear plate, and the ear plate is provided with a hinge hole; the operating component includes a rotating handle and a third connecting hole provided on the rotating handle; the rotating handle is hinged to the ear plate through the hinge hole, and the third connecting hole is connected to the second connecting rod.

[0013] Furthermore, a second connecting hole is provided on the vertical anchor drilling mechanism, a fourth connecting hole is provided on the rotating handle, and a spring is provided between the second connecting hole and the fourth connecting hole.

[0014] Furthermore, a rotating rod is provided on the barbed drilling mechanism through a second power source, a second drilling tool is provided on the rotating rod, and a drill bit is provided at the end of the rotating rod.

[0015] Furthermore, the drill bit is provided with a first spiral groove and a second spiral groove; the groove width of the second spiral groove is greater than the groove width of the first spiral groove, and the rotation directions of the first spiral groove and the second spiral groove are opposite.

[0016] In order to achieve the above-mentioned object, in a second aspect, the present invention also provides a drilling method for construction of combined transmission tower foundation piles, which adopts the following technical scheme:

[0017] A drilling method for construction of a combined transmission tower foundation pile, using the drilling device for construction of a combined transmission tower foundation pile as described in the first aspect, comprising:

[0018] Pulling the second connecting rod through the operating assembly drives the connecting piece and the first connecting rod to rise, and merges the barbed drilling mechanism with the vertical anchor drilling mechanism; drilling is performed through the vertical anchor drilling mechanism;

[0019] After the drilling depth meets the requirement, the second connecting rod, the connecting member and the first connecting rod are lowered by loosening the operating assembly, and the barbed drilling mechanism is dispersed outside the vertical anchor drilling mechanism;

[0020] Barb holes are drilled on the inner wall of the borehole by using a plurality of dispersed vertical anchor rod drilling mechanisms.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention pulls the second connecting rod through the operating component, drives the connecting piece and the first connecting rod to rise, and merges the barb drilling mechanism to the vertical anchor rod drilling mechanism; drilling is performed by the vertical anchor rod drilling mechanism; after the drilling depth meets the requirement, the second connecting rod, the connecting piece and the first connecting rod are lowered by loosening the operating component, and the barb drilling mechanism is dispersed outside the vertical anchor rod drilling mechanism; barb holes are drilled on the inner wall of the borehole by the dispersed multiple vertical anchor rod drilling mechanisms; the drilling of the barb holes can meet the installation requirements of the barb foundation piles, does not require a large amount of soil excavation, and can achieve the drilling of barb holes of larger length without increasing the size of the excavation pit, thereby meeting the barb length requirement and ensuring the pull-out bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification that constitute a part of this embodiment are used to provide a further understanding of this embodiment. The schematic embodiments of this embodiment and their descriptions are used to explain this embodiment and do not constitute improper limitations on this embodiment.

[0024] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0025] Figure 2This is a schematic diagram of a vertical anchor drilling mechanism according to Embodiment 1 of the present invention;

[0026] Figure 3 This is a schematic diagram of a fixing member according to Embodiment 1 of the present invention;

[0027] Figure 4 This is a schematic diagram of a connector according to Embodiment 1 of the present invention;

[0028] Figure 5 This is a schematic diagram of a barbed drilling mechanism according to Embodiment 1 of the present invention;

[0029] Among them, 1. first power source; 2. vertical anchor drilling mechanism; 201. first connecting hole; 202. main rod; 203. first drilling tool; 204. external thread; 205. second connecting hole; 206. ear plate; 207. hinge hole; 3. adjustment mechanism; 301. fixing piece; 3011. fixing block; 3012. internal thread; 3013. first connecting groove; 3014. connecting column; 302. first connecting rod; 303. connecting piece; 3031. connecting block; 3032. sleeve; 3033 , second connecting groove; 3034, rib hole; 304, second connecting rod; 305, operating assembly; 3051, rotating handle; 3052, third connecting hole; 3053, fourth connecting hole; 306, spring; 4, barbed drilling mechanism; 401, barbed rod; 402, fifth connecting hole; 403, sixth connecting hole; 404, second power source; 405, rotating rod; 406, second drilling tool; 407, drill bit; 4071, first spiral groove; 4072, second spiral groove; 5, fixing handle. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0032] A combined transmission tower foundation pile has a portion of the lower portion of the reinforced concrete pile body replaced by a plurality of barbed anchor rods.

[0033] Embodiment 1:

[0034] like Figure 1 and Figure 2 As shown, this embodiment provides a drilling device for construction of combined transmission tower foundation piles, including a vertical anchor drilling mechanism 2, and a plurality of barbed drilling mechanisms 4 arranged on the vertical anchor drilling mechanism 2 through an adjustment mechanism 3;

[0035] The adjusting mechanism 3 includes a fixing part 301 arranged at one end of the vertical anchor drilling mechanism 2, a connecting part 303 sleeved on the vertical anchor drilling mechanism 2, and an operating component 305 arranged at the other end of the vertical anchor drilling mechanism 2; a plurality of barb drilling mechanisms 4 are hinged to the fixing part 301, a first connecting rod 302 is arranged between the barb drilling mechanism 4 and the connecting part 303, and a second connecting rod 304 is arranged between the connecting part 303 and the operating component 305.

[0036] Specifically, the second connecting rod 304 is pulled by the operating component 305, so as to drive the connecting piece 303 and the first connecting rod 302 to rise, and the barb drilling mechanism 4 is merged to the vertical anchor drilling mechanism 2; drilling is performed by the vertical anchor drilling mechanism 2; after the drilling depth meets the requirement, the second connecting rod 304, the connecting piece 303 and the first connecting rod 302 are lowered by relaxing the operating component 305, and the barb drilling mechanism 4 is dispersed outside the vertical anchor drilling mechanism 2; barb holes are drilled on the inner wall of the borehole by the dispersed multiple vertical anchor drilling mechanisms 2; the drilling of barb holes can meet the installation requirements of barb piles without the need for a large amount of soil excavation, and can achieve the drilling of larger length barb holes without increasing the size of the excavation pit, thereby meeting the barb length requirement and ensuring the pull-out bearing capacity.

[0037] like Figure 1 and Figure 2 As shown, the vertical anchor drilling mechanism 2 includes a main rod 202 , a first power source 1 arranged at one end of the main rod 202 , and a first drilling tool 203 arranged at the other end of the main rod 202 .

[0038] Optionally, after the operating assembly 305 is lifted, it is fixed to the fixed handle 5 by hooking or binding, and then the vertical anchor drilling mechanism 2 is driven by the first power source 1 to rotate for drilling; the main rod 202 is connected to the output shaft of the first power source 1 through the first connecting hole 201; the first power source 1 can be implemented by a motor or other components, and a handheld handle can be set on the motor to provide a handle for the staff. The main rod 202 can also be set as a tubular structure, and the rotating shaft connected to the output shaft of the first power source 1 passes through the main rod 202 and is connected to the first drilling tool 203. At this time, the staff holds the fixed handle 5 and drives the first drilling tool 203 through the first power source 1 to drill. The first drilling tool 203 can be a spiral cutter or other cutters.

[0039] The main rod 202 is also provided with an external thread 204 , a second connection hole 205 and a lug plate 206 ; the lug plate 206 is provided with a hinge hole 207 .

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, the fixing member 301 includes a fixing block 3011, an internal thread 3012 provided on the fixing block 3011, a plurality of first connecting grooves 3013 provided on the fixing block 3011, and a connecting column 3014 arranged in the first connecting groove 3013; the vertical anchor rod drilling mechanism 2 is provided with an external thread 204 matching the internal thread 3012. The barbed drilling mechanism 4 includes a barbed rod 401, and a fifth connecting hole 402 and a sixth connecting hole 403 arranged on the barbed rod 401; the fifth connecting hole 402 is hinged in the first connecting groove 3013 through the connecting column 3014; the sixth connecting hole 403 is hinged to the first connecting rod 302.

[0041] like Figure 4 As shown, the connecting member 303 includes a connecting block 3031, a sleeve 3032 arranged on the connecting block 3031, a plurality of second connecting grooves 3033 opened on the connecting block 3031, and a rib-through hole 3034 arranged in the second connecting groove 3033; the first connecting rod 302 and the second connecting rod 304 are connected to the second connecting groove 3033.

[0042] The vertical anchor drilling mechanism 2 is provided with an ear plate 206, and the ear plate 206 is provided with a hinge hole 207; the operating assembly 305 includes a rotating handle 3051 and a third connecting hole 3052 provided on the rotating handle 3051; the rotating handle 3051 is hinged to the ear plate 206 through the hinge hole 207, and the third connecting hole 3052 is connected to the second connecting rod 304. The vertical anchor drilling mechanism 2 is also provided with a second connecting hole 205, and the rotating handle 3051 is also provided with a fourth connecting hole 3053, and a spring 306 is provided between the second connecting hole 205 and the fourth connecting hole 3053.

[0043] Specifically, when drilling, by lifting the rotating handle 3051, the second connecting rod 304 pulls the connecting piece 303 and the first connecting rod 302 to rise, and the first connecting rod 302 pulls the barb drilling mechanism 4 to rotate around the fixing piece 301, and the barb drilling mechanism 4 merges toward the vertical anchor drilling mechanism 2; the spring 306 is pulled by the power.

[0044] When the drilling depth meets the requirement, the rotating handle 3051 is released, and under the pulling action of the spring 306, the rotating handle 3051 returns to its original position, and the barb drilling mechanism 4 opens under the action of gravity; then, the barb drilling mechanism 4 drills holes on the side wall of the drilling hole to accommodate the pile barbs; it can be understood that the pile barbs are provided with an opening and closing function. During the drilling process of the barb drilling mechanism 4, the barb drilling mechanism 4 can be deepened by lifting the entire device.

[0045] like Figure 5 As shown, the barbed drilling mechanism 4 is provided with a rotating rod 405 through a second power source 404 , the rotating rod 405 is provided with a second drilling tool 406 , and a drill bit 407 is provided at the end of the rotating rod 405 .

[0046] The drill bit 407 is provided with a first spiral groove 4071 and a second spiral groove 4072 . The width of the second spiral groove 4072 is greater than the width of the first spiral groove 4071 . The first spiral groove 4071 and the second spiral groove 4072 have opposite rotation directions.

[0047] Optionally, the barbed rod 401 can be a metal rod; the second power source 404 can be a motor, the rotating rod 405 is connected to the output shaft of the second power source 404, and the second drilling tool 406 can be a thread cutter or other cutting tools; the groove width of the second spiral groove 4072 is greater than the groove width of the first spiral groove 4071, and the rotation directions of the first spiral groove 4071 and the second spiral groove 4072 are opposite, which can improve the flexibility of excavation and ensure smooth drilling.

[0048] After drilling is achieved through this embodiment, the barbed drilling mechanism 4 on the vertical anchor drilling mechanism 2 can be used to form an anchor hole with barbs, and because the barbed anchor hole is lowered and grouting is performed, multiple barbed anchors can be connected through the slurry between the barbs to form a whole, which greatly improves the integrity of the multi-anchor structure. The installation of the barbed anchor can be achieved, and the barbed anchor replaces part of the traditional pile foundation, which can effectively solve the problem of large amount of waste soil and difficulty in transporting the waste soil during the construction of the pile foundation of the transmission tower in the mountainous area.

[0049] Embodiment 2:

[0050] This embodiment provides a drilling method for construction of combined transmission tower foundation piles, using the drilling device for construction of combined transmission tower foundation piles as described in Example 1, including:

[0051] The second connecting rod 304 is pulled by the operating component 305 to drive the connecting member 303 and the first connecting rod 302 to rise, and the barbed drilling mechanism 4 is merged with the vertical anchor drilling mechanism 2; drilling is performed by the vertical anchor drilling mechanism 2;

[0052] After the drilling depth meets the requirement, the operating assembly 305 is loosened, so that the second connecting rod 304, the connecting member 303 and the first connecting rod 302 are lowered, and the barbed drilling mechanism 4 is dispersed outside the vertical anchor drilling mechanism 2;

[0053] Barb holes are drilled on the inner wall of the borehole by means of a plurality of dispersed vertical anchor drilling mechanisms 2 .

[0054] The above description is only a preferred embodiment of the present embodiment and is not intended to limit the present embodiment. For those skilled in the art, the present embodiment may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present embodiment shall be included in the protection scope of the present embodiment.

Claims

1. A drilling device for construction of combined transmission tower foundation piles, characterized in that: It comprises a vertical anchor drilling mechanism (2), and a plurality of barbed drilling mechanisms (4) arranged on the vertical anchor drilling mechanism (2) via an adjustment mechanism (3); The adjusting mechanism (3) comprises a fixing member (301) arranged at one end of the vertical anchor drilling mechanism (2), a connecting member (303) sleeved on the vertical anchor drilling mechanism (2), and an operating assembly (305) arranged at the other end of the vertical anchor drilling mechanism (2); a plurality of barbed drilling mechanisms (4) are hinged to the fixing member (301), a first connecting rod (302) is arranged between the barbed drilling mechanism (4) and the connecting member (303), and a second connecting rod (304) is arranged between the connecting member (303) and the operating assembly (305).

2. A drilling device for construction of combined transmission tower foundation piles as claimed in claim 1, characterized in that: The vertical anchor drilling mechanism (2) is provided with a first power source (1) at one end and a first drilling tool (203) at the other end.

3. A drilling device for construction of combined transmission tower foundation piles as claimed in claim 1, characterized in that: The fixing member (301) comprises a fixing block (3011), an internal thread (3012) provided on the fixing block (3011), a plurality of first connecting grooves (3013) provided on the fixing block (3011), and a connecting column (3014) arranged in the first connecting groove (3013); an external thread (204) matching the internal thread (3012) is arranged on the vertical anchor drilling mechanism (2).

4. A drilling device for construction of combined transmission tower foundation piles as claimed in claim 3, characterized in that: The barbed drilling mechanism (4) comprises a barbed rod (401), and a fifth connecting hole (402) and a sixth connecting hole (403) arranged on the barbed rod (401); the fifth connecting hole (402) is hinged in the first connecting groove (3013) through the connecting column (3014); and the sixth connecting hole (403) is hinged to the first connecting rod (302).

5. A drilling device for construction of combined transmission tower foundation piles as claimed in claim 1, characterized in that: The connecting member (303) comprises a connecting block (3031), a sleeve (3032) arranged on the connecting block (3031), a plurality of second connecting grooves (3033) provided on the connecting block (3031), and rib-penetrating holes (3034) arranged in the second connecting grooves (3033); the first connecting rod (302) and the second connecting rod (304) are connected to the second connecting grooves (3033).

6. A drilling device for construction of combined transmission tower foundation piles as claimed in claim 1, characterized in that: The vertical anchor drilling mechanism (2) is provided with an ear plate (206), and the ear plate (206) is provided with a hinge hole (207); the operating component (305) comprises a rotating handle (3051) and a third connecting hole (3052) provided on the rotating handle (3051); the rotating handle (3051) is hinged to the ear plate (206) through the hinge hole (207), and the third connecting hole (3052) is connected to the second connecting rod (304).

7. A drilling device for construction of combined transmission tower foundation piles as claimed in claim 6, characterized in that: The vertical anchor drilling mechanism (2) is also provided with a second connection hole (205), the rotating handle (3051) is also provided with a fourth connection hole (3053), and a spring (306) is provided between the second connection hole (205) and the fourth connection hole (3053).

8. A drilling device for construction of combined transmission tower foundation piles as claimed in claim 1, characterized in that: The barbed drilling mechanism (4) is provided with a rotating rod (405) through a second power source (404), a second drilling tool (406) is provided on the rotating rod (405), and a drill bit (407) is provided at the end of the rotating rod (405).

9. A drilling device for construction of combined transmission tower foundation piles as claimed in claim 8, characterized in that: The drill bit (407) is provided with a first spiral groove (4071) and a second spiral groove (4072); the width of the second spiral groove (4072) is greater than the width of the first spiral groove (4071), and the first spiral groove (4071) and the second spiral groove (4072) have opposite rotation directions.

10. A drilling method for construction of combined transmission tower foundation piles, characterized in that: The drilling device for construction of combined transmission tower foundation piles as claimed in any one of claims 1 to 9 is used, comprising: The second connecting rod (304) is pulled by the operating component (305), so as to drive the connecting piece (303) and the first connecting rod (302) to rise, and the barbed drilling mechanism (4) is merged with the vertical anchor drilling mechanism (2); drilling is performed by the vertical anchor drilling mechanism (2); After the drilling depth meets the requirement, the operating assembly (305) is loosened, so that the second connecting rod (304), the connecting piece (303) and the first connecting rod (302) are lowered, and the barbed drilling mechanism (4) is dispersed outside the vertical anchor drilling mechanism (2); Barb holes are drilled on the inner wall of the borehole by using a plurality of dispersed vertical anchor rod drilling mechanisms (2).

Images