Intelligent device for reducing PHC pile hole-forming collapse hole in gobi desert gravel geology

Abstract

The utility model relates to the technical field of PHC pile construction equipment, in particular to an intelligent device for reducing gobi desert gravel geology PHC pile hole-forming collapse holes, and the intelligent device comprises a rotary drilling mechanism and a water spraying mechanism; the rotary drilling mechanism comprises a machine body and a drill bit, and the drill bit is arranged on one side of the machine body and slidably connected to the machine body in the first direction; the water spraying mechanism comprises a nozzle and a control unit, the nozzle is directly or indirectly connected to the top of the drill bit, the water spraying direction of the nozzle is parallel to the second direction, the second direction is perpendicular to the first direction, and the control unit is directly or indirectly electrically connected with the nozzle so as to detect whether the hole collapse phenomenon exists in the hole forming area or not. The method has the effects that the hole collapse phenomenon is reduced, and the hole forming flatness is improved.

Description

Technical Field

[0001] The present application relates to the technical field of PHC pile construction equipment, and in particular to an intelligent device for reducing hole collapse of PHC piles in Gobi Desert gravel geology. Background Art

[0002] At present, more and more solar thermal projects are being built in the Gobi Desert with gravel geology. The foundation of the heliostat generally adopts the construction method of PHC prestressed pipe piles plus outer concrete pouring. Rotary drilling is a construction technology suitable for drilling operations in building foundation projects. It is widely used in municipal construction, highway bridges, high-rise buildings and other foundation construction projects. With different drilling tools, it is suitable for dry or wet and rock drilling operations.

[0003] Taking the 100MW solar thermal project as an example, there are more than 16,000 pile foundations in the mirror field area. The pile hole diameter is about 650mm. PHC pipe piles are inserted in the pile holes, and the pile holes are poured with C40 fine aggregate concrete.

[0004] In view of the above-mentioned related technologies, when using rotary drilling to drill holes in gravel geology, there are a lot of hole collapse phenomena. Due to the huge number of pipe piles, the filling coefficient of poured concrete is too large, resulting in a lot of concrete waste, which seriously increases the construction cost. Therefore, it is urgent to provide a device for reducing the hole collapse in Gobi Desert gravel geology. Utility Model Content

[0005] In order to reduce the occurrence of hole collapse and improve the flatness of the hole, the present application provides an intelligent device for reducing hole collapse in PHC pile hole drilling in Gobi Desert gravel geology.

[0006] The present application provides an intelligent device for reducing the hole collapse of PHC piles in Gobi Desert gravel geology, which adopts the following technical solutions:

[0007] An intelligent device for reducing the hole collapse of PHC piles in Gobi Desert gravel geology, comprising a rotary drilling mechanism and a water spray mechanism;

[0008] The rotary drilling mechanism comprises a body and a drill bit, wherein the drill bit is arranged on one side of the body and is slidably connected to the body along a first direction;

[0009] The water spray mechanism includes a spray head and a control unit. The spray head is directly or indirectly connected to the top of the drill bit, and the water spraying direction of the spray head is parallel to a second direction, and the second direction is perpendicular to the first direction. The control unit is directly or indirectly electrically connected to the spray head to detect whether there is a hole collapse phenomenon in the hole forming area.

[0010] By adopting the above technical scheme, when a rotary drill is used to drill holes in the soil, since the geology of the PHC piles is mostly Gobi Desert, which is relatively dry, it is easy to cause hole collapse during drilling, thereby affecting the pouring of concrete. For this reason, a nozzle and a control unit are set. When the drill bit penetrates deep into the soil, the control unit detects the hole area. If it is detected that the hole area may collapse, the control unit sends a signal to the nozzle to control the nozzle to spray water. The water spraying direction of the nozzle is parallel to the second direction, that is, toward the surrounding wall of the hole, so that the nozzle sprays water on the surrounding wall of the hole, thereby improving the adhesion of the soil and reducing the hole collapse.

[0011] Optionally, the machine body includes a drill rod, a walking mechanism and a support part, the support part is arranged parallel to the first direction, one end of the support part is connected to the walking mechanism, the drill rod is arranged parallel to the first direction, one end of the drill rod is slidably connected to one end of the support part away from the walking mechanism along the first direction, and the other end is rotatably connected to a drill bit, and the drill bit is parallel to the first direction along the rotation axis of the drill rod.

[0012] By adopting the above technical solution, in order to make the drill bit penetrate into the soil to the desired position of the drilling hole, the drill rod slides along the support part to further drive the drill bit to slide along the first direction and connect to the support part, so that the drill bit can penetrate into the soil.

[0013] Optionally, the water spray mechanism also includes a water spray seat, a water pipe and a water tank. The water spray seat is hollow and is sleeved on the side of the drill rod close to the drill bit. There are multiple nozzles distributed at intervals along the circumference of the water spray seat. The water tank is arranged on one side of the walking mechanism. One end of the water pipe is connected to the water tank, and the other end is connected to the water spray seat.

[0014] By adopting the above technical scheme, the water tank and the water spray seat are connected through a water pipe to realize the spray of water by the nozzle on the peripheral wall of the hole. In order to spray water evenly on the peripheral wall of the hole, a plurality of nozzles are arranged at intervals along the circumference of the water spray seat, so that water can flow into each nozzle from the water spray seat for spraying water.

[0015] Optionally, the water pipe is connected to an intelligent water pump, and the intelligent water pump is electrically connected to the control unit via a control line.

[0016] By adopting the above technical solution, the intelligent water pump is electrically connected to the control unit, so that the control unit sends a signal to the intelligent water pump, and the intelligent water pump further controls the on and off of the water flow in the water pipe.

[0017] Optionally, a protective mechanism is further included, which includes a protective plate, which is located on the periphery of the drill rod and is directly or indirectly connected to the drill bit. The side of the protective plate away from the drill rod has a protective gap with the outer wall of the drill bit in the second direction.

[0018] By adopting the above technical solution, by setting the protective plate, if the hole collapses when the hole is formed, since there is a protective gap between the protective plate and the drill bit in the second direction, it further indicates that there is a protective gap between the protective plate and the peripheral wall of the hole, and the collapsed soil will be sandwiched in the protective gap, thereby reducing the collapsed soil from occupying too much space in the hole and affecting the subsequent concrete pouring, and since the protective plate is connected to the drill bit, the rotation of the drill bit drives the protective plate to rotate, so that the protective plate evenly protects the peripheral wall of the hole.

[0019] Optionally, both side walls of the protective plate are in arc shapes parallel to each other, and the arc opening faces the side close to the drill rod.

[0020] By adopting the above technical solution, since the PHC pile and the hole are both cylindrical, in order to make the protective plate more suitable for the soil around the hole, the protective plate is set in an arc shape.

[0021] Optionally, two protective plates are provided, and the two protective plates are symmetrically arranged on both sides of the drill rod.

[0022] By adopting the above technical solution, in order to further improve the protection efficiency, symmetrically distributed protection plates are provided to protect the surrounding walls of the holes.

[0023] Optionally, the protective plate is connected to the drill bit for reciprocating sliding along the second direction to change the width of the protective gap.

[0024] By adopting the above technical solution, since the Gobi Desert is mainly formed by gravel, sand and other components, the inner wall of the hole may be uneven. Therefore, the protective plate is connected to the drill bit by sliding along the second direction, so that the protective plate slides along the second direction until it contacts the inner wall of the hole. The protective plate presses the inner wall of the hole, thereby improving the flatness of the inner wall of the hole and further reducing the hole collapse phenomenon.

[0025] Optionally, the protective plate is arranged on a side of the water spray seat away from the drill bit.

[0026] By adopting the above technical scheme, in order to prevent the protective plate from affecting the water spraying effect of the nozzle, the protective plate is arranged on the side of the water spray seat away from the drill bit. In this way, water can be sprayed through the nozzle first, and then the protective plate can be used to press the surrounding wall of the hole, thereby achieving a better protective effect.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The present application sets a nozzle and a control unit, and the control unit detects the hole area. If it is detected that the hole may collapse, the control unit transmits a signal to the nozzle, and the nozzle sprays water on the surrounding wall of the hole, thereby improving the soil cohesion and reducing the hole collapse;

[0029] 2. The present application further reduces the hole collapse by setting a protective plate to protect the surrounding wall of the hole;

[0030] 3. The present application arranges the protective plate to slide along the second direction so that the protective plate can contact and press against the peripheral wall of the hole, thereby improving the flatness of the peripheral wall of the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a device for reducing the collapse of PHC pile holes in Gobi Desert gravel geology;

[0032] Figure 2 yes Figure 1 A magnified view of part A;

[0033] Figure 3 yes Figure 1 A magnified view of part B;

[0034] Figure 4 It is a structural diagram of the protection mechanism.

[0035] Explanation of the accompanying drawings: 1. rotary drilling mechanism; 11. machine body; 111. drill rod; 112. walking mechanism; 113. supporting part; 12. drill bit; 2. water spraying mechanism; 21. nozzle; 22. water spraying seat; 23. water pipe; 231. intelligent water pump; 232. first mounting seat; 24. water tank; 25; control unit; 3. protective mechanism; 31. protective plate; 311. protective gap; 32. connecting rod; 33. driving member; 34. second mounting seat. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-4 This application is described in further detail.

[0037] The present application embodiment discloses an intelligent device for reducing the collapse of PHC pile holes in Gobi Desert gravel geology. Figure 1 The device for reducing the hole collapse of PHC piles in Gobi desert gravel geology comprises a rotary drilling mechanism 1 and a water spraying mechanism 2. The water spraying mechanism 2 is installed on the rotary drilling mechanism 1. When the rotary drilling mechanism 1 is drilling a hole in the hole forming area, the water spraying mechanism 2 sprays water on the surrounding wall of the hole to prevent the hole wall from collapsing.

[0038] Reference Figure 1 and Figure 2The rotary drilling mechanism 1 includes a body 11 and a drill bit 12, the drill bit 12 is arranged on one side of the body 11, and the drill bit 12 is slidably connected to the body 11 along a first direction. The water spraying mechanism 2 includes a nozzle 21 and a control unit 25. The nozzle 21 is directly or indirectly connected to the top of the drill bit 12. The water spraying direction of the nozzle 21 is parallel to the second direction, and the second direction is perpendicular to the first direction. The control unit 25 is directly or indirectly electrically connected to the nozzle 21 to detect whether there is a hole collapse phenomenon in the hole forming area. If the hole collapse phenomenon is detected, the control unit 25 controls the nozzle 21 to spray water to improve the soil adhesion in the hole forming area and reduce the hole collapse.

[0039] Reference Figure 1 and Figure 2 In order to facilitate the drill bit 12 to penetrate the soil to the operating depth, the rotary drilling mechanism 1 also includes a drill rod 111, a walking mechanism 112 and a support part 113. One end of the support part 113 is connected to the walking mechanism 112, and the support part 113 is arranged parallel to the first direction. The drill rod 111 is arranged parallel to the first direction. One end of the drill rod 111 is slidably connected to the end of the support part 113 away from the walking mechanism 112 along the first direction, and the other end is connected with the drill bit 12, so that the drill bit 12 can be driven to slide along the first direction by the sliding of the drill rod 111 along the first direction, so that the drill bit 12 can penetrate the soil to the required depth. It should be noted that the drill bit 12 is rotatably connected to the drill rod 111, and the drill bit 12 is parallel to the first direction along the rotation axis of the drill rod 111, and the outer diameter of the drill bit 12 is larger than the outer diameter of the drill rod 111.

[0040] Reference Figure 1 , Figure 2 and Figure 3 When the drill bit 12 is located in the soil to drill a hole, in order to evenly spray water on the inner wall of the hole, the water spray mechanism 2 also includes a water spray seat 22, a water pipe 23 and a water tank 24. The drill rod 111 is sleeved with a water spray seat 22 on one side close to the drill bit 12. The water spray seat 22 is hollow. A plurality of spray heads 21 are arranged at intervals along the circumference of the water spray seat 22. The water inlet end of the spray head 21 is connected to the water spray seat 22. The water tank 24 is arranged on one side of the walking mechanism 112. The water inlet end of the water pipe 23 is connected to the water tank 24, and the water outlet end is connected to the water spray seat 22. The seat 22, the bottom wall of the water spray seat 22 is connected with a control unit 25, the water pipe 23 is connected with an intelligent water pump 231, and the intelligent water pump 231 is electrically connected to the control unit 25 through a control line. In this embodiment, the control unit 25 is a sensor, and the control unit 25 detects whether the hole may collapse. If so, the control unit 25 sends a signal to the intelligent water pump 231, and the intelligent water pump 231 further controls the water pipe 23 to pump water to the sprinkler 21 and spray water to improve the soil adhesion and reduce the phenomenon of hole collapse.

[0041] Reference Figure 1 and Figure 2In some embodiments, there can be two, three or four nozzles 21. When there are two nozzles 21, the spraying range of the water outlet end of the nozzle 21 is larger. When there are three or four nozzles 21, the spraying range of the water outlet end of the nozzle 21 is smaller.

[0042] Reference Figure 1 In some embodiments, the water pipe 23 can be a rubber hose or a retractable hose. In this embodiment, the water pipe 23 is a rubber hose. Since the drill rod 111 is slidably connected to the support portion 113 along the first direction, in order to enable the water pipe 23 to move more stably following the drill bit 12, the water pipe 23 is fixedly connected to the support portion 113 through a plurality of first mounting seats 232. Specifically, the first mounting seat 232 is sleeved on the drill rod 111, and the water inlet end of the water pipe 23 is connected to the water spray seat 22 after passing through the first mounting seat 232. The water pipe 23 is slidably connected to the first mounting seat 232 along the first direction.

[0043] Reference Figure 4 When the drill bit 12 drills the hole forming area, in order to further prevent the soil from accumulating in the hole due to the hole collapse, the device for reducing the hole collapse of the PHC pile in the Gobi Desert gravel geology also includes a protection mechanism 3, the protection mechanism 3 includes a protection plate 31, the protection plate 31 is located on the outer peripheral side of the drill rod 111, the protection plate 31 is connected to the top of the drill bit 12, and the protection plate 31 and the outer peripheral wall of the drill bit 12 have a protection gap 311 in the second direction. When the drill bit 12 drills into the soil, the outer diameter of the drill bit 12 is The aperture of the hole means that there is a protective gap 311 between the protective plate 31 and the hole. If a hole collapses, due to the protective effect of the protective plate 31, the collapsed soil can be further controlled within the protective gap 311 formed by the protective plate 31 and the hole, thereby reducing the range of soil accumulation during collapse; and because the protective plate 31 is connected to the drill bit 12, when the drill bit 12 rotates along the first direction, it drives the protective plate 31 to rotate along the first direction, so that the protective plate 31 can evenly protect the surrounding wall of the hole.

[0044] Reference Figure 4 Since the PHC pile has a circular cross-section, the hole is also cylindrical. In order to further adapt the shape of the protective plate 31 to the hole wall, both sides of the protective plate 31 are parallel arc-shaped, and the arc opening faces the side close to the drill rod 111.

[0045] Referring to the figures, in some embodiments, there can be one or more protective plates 31. In order to improve the protective effect, in this embodiment, there are two protective plates 31, which are symmetrically distributed on both sides of the drill rod 111, so that the two protective plates 31 can protect the surrounding wall of the hole.

[0046] Reference Figure 4Since the soil contains coarse sand, gravel and other materials, the inner wall of the hole may be uneven. In some embodiments, the protective plate 31 is connected to the drill bit 12 by sliding along the second direction to change the width of the protective gap 311. When the protective plate 31 slides along the second direction to contact the hole wall, the protective plate 31 can press the soil on the hole wall to improve the flatness of the hole wall and further prevent the hole collapse.

[0047] Reference Figure 4 In order to prevent the protective plate 31 from affecting the water spraying of the nozzle 21, the protective plate 31 is arranged on the side of the nozzle 21 away from the drill bit 12. In order to connect the drill bit 12 and the protective plate 31, the protective mechanism 3 also includes a connecting rod 32. The connecting rod 32 is parallel to the first direction. One end of the connecting rod 32 is fixedly connected to the protective plate 31, and the other end is connected to the top wall of the drill bit 12, so that the peripheral wall of the hole is first sprayed with water by the nozzle 21, and then the peripheral wall of the hole is pressed by the protective plate 31.

[0048] Reference Figure 4 In order to drive the protective plate 31 to slide along the second direction, the protective mechanism 3 also includes a driving member 33. In this embodiment, the driving member 33 is a cylinder, the cylinder shell of the cylinder is fixedly connected to the top wall of the drill bit 12, the piston rod of the cylinder is parallel to the second direction, and the piston rod of the cylinder is fixedly connected to the end of the connecting rod 32 away from the protective plate 31 through the second mounting seat 34, that is, the second mounting seat 34 is connected between the connecting rod 32 and the cylinder piston rod, so that the driving member 33 drives the protective plate 31 to slide along the second direction through the connecting rod 32.

[0049] The implementation principle of the intelligent device for reducing the hole collapse of PHC piles in the Gobi Desert gravel geology in the embodiment of the present application is as follows: during construction, the device is first moved to the construction position by the walking mechanism 112, and the drill bit 12 is driven by the sliding of the drill rod 111 along the first direction to drill deeply into the soil. During the drilling process, the control unit 25 detects the hole formation situation. If the control unit 25 detects that the hole collapse may occur, a signal is sent to the intelligent water pump 231, and the intelligent water pump 231 further controls the water pipe 23 to pump water from the water pipe 23 to the nozzle 21, and the nozzle 21 sprays water on the surrounding wall of the hole to improve the cohesion of the soil;

[0050] Since the surrounding wall of the hole may not be smooth enough, after the water spraying is completed, the two protective plates 31 are driven to slide along the first direction by the driving member 33, so that the protective plates 31 can press the surrounding wall of the hole and further reduce the occurrence of hole collapse. The protective plates 31 are connected to the drill bit 12, and the rotation of the drill bit 12 drives the protective plates 31 to rotate, so that the protective plates 31 can evenly protect the surrounding wall of the hole.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An intelligent device for reducing the hole collapse of PHC piles in Gobi Desert gravel geology, characterized by: It comprises a rotary drilling mechanism (1) and a water spraying mechanism (2); The rotary drilling mechanism (1) comprises a body (11) and a drill bit (12); the drill bit (12) is arranged on one side of the body (11), and the drill bit (12) is slidably connected to the body (11) along a first direction; The water spraying mechanism (2) comprises a spray head (21) and a control unit (25); the spray head (21) is directly or indirectly connected to the top of the drill bit (12); the spraying direction of the spray head (21) is parallel to a second direction, and the second direction is perpendicular to the first direction; the control unit (25) is directly or indirectly electrically connected to the spray head (21) to detect whether there is a hole collapse phenomenon in the hole forming area.

2. The intelligent device for reducing the hole collapse of PHC piles in Gobi Desert gravel geology according to claim 1 is characterized by: The machine body (11) comprises a drill rod (111), a walking mechanism (112) and a support portion (113); the support portion (113) is arranged parallel to the first direction; one end of the support portion (113) is connected to the walking mechanism (112); the drill rod (111) is arranged parallel to the first direction; one end of the drill rod (111) is slidably connected to one end of the support portion (113) away from the walking mechanism (112) along the first direction; the other end of the drill rod (111) is rotatably connected to a drill bit (12); and the drill bit (12) is parallel to the first direction along the rotation axis of the drill rod (111).

3. The intelligent device for reducing the hole collapse of PHC piles in Gobi Desert gravel geology according to claim 2 is characterized by: The water spray mechanism (2) further comprises a water spray seat (22), a water pipe (23) and a water tank (24); the water spray seat (22) is hollow and sleeved on a side of the drill rod (111) close to the drill bit (12); a plurality of the spray heads (21) are spaced apart along the circumference of the water spray seat (22); the water tank (24) is arranged on one side of the walking mechanism (112); one end of the water pipe (23) is connected to the water tank (24), and the other end is connected to the water spray seat (22).

4. The intelligent device for reducing the hole collapse of PHC piles in Gobi Desert gravel geology according to claim 3 is characterized by: The water pipe (23) is connected to an intelligent water pump (231), and the intelligent water pump (231) is electrically connected to the control unit (25) via a control line.

5. The intelligent device for reducing the hole collapse of PHC piles in Gobi Desert gravel geology according to claim 4 is characterized by: The invention also comprises a protection mechanism (3), wherein the protection mechanism (3) comprises a protection plate (31), wherein the protection plate (31) is located on the periphery of the drill rod (111), the protection plate (31) is directly or indirectly connected to the drill bit (12), and a protection gap (311) is formed between a side of the protection plate (31) away from the drill rod (111) and the outer peripheral wall of the drill bit (12) in the second direction.

6. The intelligent device for reducing the hole collapse of PHC piles in Gobi Desert gravel geology according to claim 5 is characterized by: Both side walls of the protection plate (31) are in the shape of arcs parallel to each other, and the arc opening faces the side close to the drill rod (111).

7. The intelligent device for reducing the hole collapse of PHC piles in Gobi Desert gravel geology according to claim 5 is characterized by: Two protective plates (31) are provided, and the two protective plates (31) are symmetrically arranged on both sides of the drill rod (111).

8. The intelligent device for reducing the hole collapse of PHC piles in Gobi Desert gravel geology according to claim 5 is characterized by: The protection plate (31) is connected to the drill bit (12) in a reciprocating sliding manner along a second direction to change the width of the protection gap (311).

9. The intelligent device for reducing the hole collapse of PHC piles in Gobi Desert gravel geology according to claim 5, characterized in that: The protective plate (31) is arranged on a side of the water spray seat (22) away from the drill bit (12).

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