Sludge layer drilling and pile grouting device for hydropower station and construction method

Abstract

The invention relates to the field of water conservancy project infrastructure construction, in particular to a silt layer drilling and pile grouting device for a hydropower station and a construction method. The drilling and pile grouting device comprises a carrier, a swing arm mechanism is installed on the carrier in a matched mode, an installation arm is installed on the swing arm mechanism, a sliding mechanism is arranged on the installation arm, a rotary excavating mechanism is installed on the sliding mechanism, and a hole cleaning and pile grouting mechanism is arranged on the outer side of the rotary excavating mechanism. The angle and position of the mounting arm can be conveniently adjusted through the swing arm mechanism, and the construction precision of a pile hole can be guaranteed; the sliding mechanism can drive the rotary excavating mechanism and the hole cleaning and pile grouting mechanism to move in the length direction of the mounting arm, so that the depth of a pile hole can be accurately controlled, the hole cleaning and pile grouting mechanism can discharge mud in time in the drilling process and can also fill concrete into the pile hole in time after drilling is completed, and the drilling efficiency is improved. In this way, drilling and pile grouting can be smoothly conducted on the silt layer, and the construction efficiency of drilling and pile grouting and the quality of a pile body can be improved.

Description

Technical Field

[0001] The invention relates to the field of water conservancy engineering infrastructure construction, and in particular to a silt layer drilling and pouring pile device for a hydropower station and a construction method. Background Art

[0002] During the construction of a hydropower station, the construction quality of the foundation piles is crucial to the stability and safety of the entire power station structure. Among the many geological conditions, the presence of silt layers poses a great challenge to bored pile construction.

[0003] Traditional bored pile devices can be used in relatively stable geological conditions such as ordinary soil layers. When the drill bit of the traditional drilling device enters the silt layer, the silt is highly fluid and viscous, and has poor stability. Hole collapse is likely to occur during the drilling process. Once the hole collapses, it will not only affect the drilling progress, but also have a serious impact on the subsequent pile construction, and easily lead to uneven distribution of concrete during the pouring process, resulting in quality problems such as mud inclusion and broken piles in the pile body.

[0004] Therefore, how to smoothly perform bored pile grouting in the silt layer and ensure the construction efficiency and pile quality of bored pile grouting is a problem that technical personnel in this field need to solve urgently. Summary of the invention

[0005] In order to smoothly carry out pile drilling and grouting in a silt layer and ensure the construction efficiency and pile quality of the pile drilling and grouting, the present application provides a silt layer pile drilling and grouting device and a construction method for a hydropower station.

[0006] The present application provides a silt layer drilling pile device and construction method for a hydropower station, which adopts the following technical solutions: In the first aspect, a silt layer drilling and pile grouting device for a hydropower station includes a carrier, a swing arm mechanism is mounted on the carrier, a mounting arm is mounted on the swing arm mechanism, a sliding mechanism is provided on the mounting arm, a rotary drilling mechanism is mounted on the sliding mechanism, a hole cleaning and pile grouting mechanism is provided on the outer side of the rotary drilling mechanism; the rotary drilling mechanism and the hole cleaning and pile grouting mechanism are coaxially arranged, and the hole cleaning and pile grouting mechanism can be detachably connected to an external silt discharge device and a concrete storage device respectively.

[0007] By adopting the above technical scheme, the carrier can be used to conveniently and quickly drive the entire drilling and grouting device to move, the swing arm mechanism can conveniently adjust the angle and position of the installation arm, and combined with the carrier, the drilling position of the pile hole can be conveniently adjusted, which is conducive to ensuring the construction accuracy of the pile hole, and the sliding mechanism can drive the rotary drilling mechanism and the hole cleaning and pile grouting mechanism to move along the length direction of the installation arm, so as to accurately control the depth of the pile hole, and the hole cleaning and pile grouting mechanism can discharge the mud in time during the drilling process, and can also pour concrete into the pile hole in time after the drilling is completed; this not only can pile drilling and grouting be carried out smoothly in the silt layer, but also can improve the construction efficiency and pile quality of pile drilling and grouting.

[0008] Furthermore, the swing arm mechanism includes a first connecting arm, a second connecting arm and a connecting seat, the first connecting arm and the second connecting arm are respectively hingedly connected to different positions on the carrier, the ends of the first connecting arm and the second connecting arm away from the carrier are respectively hingedly connected to different positions on the connecting seat, the end of the first connecting arm close to the carrier is coaxially hingedly connected with a first telescopic member, the telescopic end of the first telescopic member is coaxially hingedly connected with an end of the second connecting arm close to the connecting seat, the mounting arm is hingedly connected to the connecting seat, and a second telescopic member is hingedly connected between the mounting arm and the connecting seat.

[0009] By adopting the above technical solution, the extension and retraction of the second telescopic member can stably and reliably drive the mounting arm to swing on the connecting seat, thereby conveniently and quickly adjusting the working angles of the sliding mechanism, the rotary drilling mechanism and the hole cleaning and pile grouting mechanism; and the extension and retraction of the first telescopic member can stably and reliably drive the first connecting arm and the second connecting arm to swing, and the swing angle of the connecting seat can be controlled by the swing of the first connecting arm and the second connecting arm, thereby increasing the range of adjusting the working angle of the mounting arm.

[0010] Furthermore, a support rod is slidably connected inside the mounting arm, a third telescopic member is abutted and connected between the inner end of the support rod and the mounting arm, the outer end of the support rod extends to the lower end of the mounting arm, and the outer end of the support rod is fixedly connected to a support plate.

[0011] By adopting the above technical solution, after adjusting the working angle of the mounting arm, the support rod and the support plate can be extended downward and supported on the ground by using the third telescopic member, thereby further increasing the stability and reliability of the mounting arm during operation, which is beneficial to ensuring the construction accuracy and construction safety.

[0012] Furthermore, the sliding mechanism includes a first sliding seat, the first sliding seat is slidably connected to the mounting arm, a fourth telescopic member arranged along the sliding direction of the first sliding seat is fixedly connected to the mounting arm, the telescopic end of the fourth telescopic member is fixedly connected to the first sliding seat, and the rotary drilling mechanism is cooperatively mounted on the first sliding seat.

[0013] By adopting the above technical solution, the fourth telescopic member can stably and reliably drive the first sliding seat to slide on the mounting arm, and the rotary drilling mechanism will move with the movement of the first sliding seat, thereby conveniently and quickly controlling the rotary drilling depth of the rotary drilling mechanism during operation.

[0014] Furthermore, the rotary drilling mechanism includes a driving shaft, which is rotatably connected to the first sliding seat, and the mounting arm is slidably connected to a second sliding seat corresponding to the driving shaft, and a driving member is fixedly installed on the second sliding seat, and the output shaft of the driving member is coaxially and fixedly connected to the driving shaft, and the end of the driving shaft away from the driving member is detachably connected to a plurality of intermediate shafts coaxially plugged in sequence, and the lower end of the intermediate shaft farthest from the driving shaft is detachably connected to a working shaft, and the end of the working shaft away from the intermediate shaft is fixedly connected to a rotary drilling disk, and the rotary drilling disk is provided with a plurality of feed grooves arranged symmetrically with respect to the center, and rotary drilling teeth are fixedly connected to the position of the rotary drilling disk at the feed groove, and the rotary drilling teeth are obliquely arranged.

[0015] By adopting the above technical solution, the driving member can be used to drive the active shaft to rotate, and the active shaft can drive the working shaft to rotate through the intermediate shaft, and the working shaft can drive the rotary digging disc and the rotary digging teeth to rotate. During the rotation process, the rotary digging teeth cooperate with the descent of the first sliding seat to break up the silt and discharge the silt through the feed trough, so that drilling in the silt layer can be achieved smoothly.

[0016] Furthermore, the hole cleaning and pile pouring mechanism includes a mounting seat, which is fixedly connected to the bottom of the first sliding seat, and the bottom of the mounting seat is detachably connected to a steel casing assembly, a conveying assembly is installed inside the steel casing assembly, a hollow shaft is rotatably connected inside the mounting seat, the hollow shaft is transmission-connected to the conveying assembly, the hollow shaft is rotatably sleeved on the outside of the driving shaft, the second sliding seat is rotatably connected inside the rotating shaft, a first large gear and a first small gear are coaxially fixedly installed on the rotating shaft, a second small gear is installed on the hollow shaft corresponding to the first large gear, a second large gear is installed on the driving shaft corresponding to the first small gear, the first large gear is meshed with the second small gear, and the first small gear is meshed with the second large gear.

[0017] By adopting the above technical solution, the driving shaft can accelerate the rotation of the rotating shaft through the first small gear and the second large gear during the rotation process, and the rotating shaft will accelerate the rotation of the hollow shaft through the first large gear and the second small gear; in the process of drilling holes in the silt layer, the driving shaft is driven to rotate forwardly by the driving member, and the hollow shaft will drive the conveying component to quickly discharge the silt passing through the feed trough from the steel casing component; in the process of pile pouring in the silt layer, the driving shaft is driven to rotate reversely by the driving member, and the hollow shaft will drive the conveying component to quickly pour concrete into the pile hole through the steel casing component. This design makes the working speed of the conveying component greater than the working speed of the rotary drilling mechanism by utilizing the acceleration gear transmission. It can not only quickly remove silt and realize rapid hole cleaning during rotary drilling construction, but also quickly pour concrete into the pile hole during pile pouring.

[0018] Furthermore, the steel casing assembly includes a top steel casing, the lower end of which is detachably connected to a plurality of intermediate steel casings that are coaxially connected in sequence, and the lower end of the lowest intermediate steel casing is detachably connected to a bottom steel casing, the outer side of the top steel casing is sealed and fixedly connected to a connecting pipe near the top, and the end of the connecting pipe away from the top steel casing can be detachably connected to an external sludge discharge device and a concrete storage device respectively; the outer sides of the top steel casing and the intermediate steel casing are fixedly connected to a plurality of positioning columns that are centrally symmetrically arranged near the bottom, the outer sides of the intermediate steel casing and the bottom steel casing are sealed and rotatably connected to a receiving sleeve near the top, a locking groove is provided on the receiving sleeve corresponding to the positioning column, and screw holes are provided on the outer sides of the top steel casing and the intermediate steel casing near the bottom corresponding to the locking grooves, and limiting studs are screwed inside the screw holes.

[0019] By adopting the above technical scheme, the detachable connection between the top steel casing, the middle steel casing and the bottom steel casing can be used to meet the depth design requirement of the pile hole by adding an appropriate amount of the middle steel casing, and the design of the positioning column and the locking groove can realize the rapid disassembly and assembly of the top steel casing, the middle steel casing and the bottom steel casing, and at the same time, the limit stud can ensure the stability and reliability of the connection between the top steel casing, the middle steel casing and the bottom steel casing, and the end of the connecting pipe away from the top steel casing can be detachably connected to the external silt discharge device and the concrete storage device respectively; in this way, when drilling a hole in the silt layer, it is only necessary to connect the connecting pipe to the external silt discharge device, so that the silt can be conveniently discharged through the external silt discharge device, and when pouring piles in the silt layer, it is only necessary to connect the connecting pipe to the external concrete storage device, so that the concrete in the external concrete storage device can be conveniently input into the steel casing assembly through the connecting pipe to realize the pouring operation of the pile hole.

[0020] Furthermore, the conveying assembly includes a top sleeve, the lower end of the top sleeve is detachably connected to a plurality of intermediate sleeves coaxially connected in sequence, the lower end of the lowest intermediate sleeve is detachably connected to a bottom sleeve, the outer sides of the top sleeve, the intermediate sleeve and the bottom sleeve are respectively fixedly connected to spiral sheets connected in sequence, the tops of the top sleeve, the intermediate sleeve and the bottom sleeve are all provided with spline sockets, the hollow shaft and the bottoms of the top sleeve and the intermediate sleeve are fixedly connected with spline tubes corresponding to the spline sockets, limiting holes are provided on the top sleeve, the intermediate sleeve and the bottom sleeve corresponding to the spline sockets and the spline tubes, and radially arranged limiting pins are detachably connected inside the limiting holes.

[0021] By adopting the above technical scheme, the detachable connection between the top sleeve, the middle sleeve and the bottom sleeve can be used to meet the depth design requirement of the pile hole by adding an appropriate amount of the middle sleeve, and the spline socket and the spline tube can ensure that the hollow shaft can stably and reliably drive the top sleeve, the middle sleeve and the bottom sleeve to rotate. During the working process, the limit hole and the limit pin can axially lock the hollow shaft, the top sleeve, the middle sleeve and the bottom sleeve, thereby ensuring the stability and reliability of the conveying assembly during the lifting process.

[0022] Furthermore, a holder is fixedly connected to the mounting arm corresponding to the steel casing assembly, a driving shaft is rotationally connected to the holder in a symmetrical manner to the center of the steel casing assembly, a clamping block is fixedly connected to the driving shaft, arc-shaped clamping slots are provided on the opposite inner sides of the two clamping blocks corresponding to the outer sides of the steel casing assembly, and the outer end of the driving shaft passing through the holder is fixedly connected to a servo gear.

[0023] By adopting the above technical solution, the servo can be used to drive the drive shaft to rotate on the base, and the drive shaft will synchronously drive the block to rotate. When the two blocks swing synchronously to the middle, the bayonet on the block can clamp the steel casing assembly, thereby fixing the steel casing assembly, so that the steel casing assembly can be disassembled and assembled more conveniently during work.

[0024] Second aspect A construction method of a silt layer drilling pile device for a hydropower station comprises the following steps: Step 1: Prepare the necessary materials and equipment, including pile drilling equipment, sludge discharge equipment, and concrete.

[0025] Step 2: According to the design drawings, use surveying instruments to determine the pile positions at the construction site, measure and lay out the lines, and make marks.

[0026] Step 3: Move the pile-drilling device as a whole to the construction site via a carrier.

[0027] Step 4: Connect the hole cleaning and pile grouting mechanism to the external sludge discharge device.

[0028] Step 5: Adjust the position and angle of the installation arm by controlling the swing arm mechanism so that the center of the rotary drilling mechanism on the installation arm is vertically aligned with the center of the pile position.

[0029] Step 6: Start the driving part and control it to rotate forward, control the sliding mechanism to drive the rotary drilling mechanism to descend to achieve drilling. The depth of the drilling should be determined according to the design requirements, and the silt in the hole is discharged through the silt discharge device by using the hole cleaning and pile pouring mechanism. After the drilling is completed, remove the external silt discharge device.

[0030] Step 7: Connect the hole cleaning and pile pouring mechanism to an external concrete storage device, and inject concrete into the hole through the hole cleaning and pile pouring mechanism. During the concrete pouring process, attention should be paid to controlling the concrete pouring speed and pressure to ensure the quality of the concrete.

[0031] Step 8: After the concrete solidifies, use the sliding mechanism to pull out the hole cleaning and pile grouting mechanism. During the pulling out process, pay attention to controlling the speed and verticality.

[0032] Step 9: Clean up the construction site and remove the dirt and impurities generated during the construction process to ensure the cleanliness of the construction site.

[0033] Beneficial effects achieved: The present application can conveniently and quickly drive the entire drilling and grouting device to move through the carrier, the swing arm mechanism can conveniently adjust the angle and position of the installation arm, and combined with the carrier, the drilling position of the pile hole can be conveniently adjusted, which is beneficial to ensuring the construction accuracy of the pile hole, and the sliding mechanism can drive the rotary drilling mechanism and the hole cleaning and pile grouting mechanism to move along the length direction of the installation arm, so as to accurately control the depth of the pile hole, and the hole cleaning and pile grouting mechanism can discharge the mud in time during the drilling process, and can also pour concrete into the pile hole in time after the drilling is completed; this not only can smoothly carry out drilling and grouting in the silt layer, but also can improve the construction efficiency and pile quality of drilling and grouting. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0035] Figure 2 It is a schematic diagram of the structural decomposition of an embodiment of the present application.

[0036] Figure 3 It is a schematic diagram of the internal structure of an embodiment of the present application.

[0037] Figure 4 It is a schematic diagram of the structural decomposition of the swing arm mechanism in one embodiment of the present application.

[0038] Figure 5 It is a schematic diagram of the structural decomposition of the rotary drilling mechanism in one embodiment of the present application.

[0039] Figure 6 It is a schematic diagram of the structural decomposition of a hole cleaning and pile grouting mechanism in one embodiment of the present application.

[0040] Figure 7 It is a schematic diagram of the exploded structure of the card block in one embodiment of the present application.

[0041] Description of reference numerals: 100, carrier; 200, swing arm mechanism; 201, first connecting arm; 202, second connecting arm; 203, connecting seat; 204, first telescopic member; 205, mounting arm; 206, second telescopic member; 207, support rod; 208, third telescopic member; 209, support plate; 300, sliding mechanism; 301, first sliding seat; 302, fourth telescopic member; 400, rotary digging mechanism; 401, driving shaft; 402, second sliding seat; 403, driving member; 404, intermediate shaft; 405, working shaft; 406, rotary digging disk; 407, feeding trough; 408, rotary digging teeth; 500, hole cleaning and pile pouring mechanism; 501, mounting seat; 502, hollow shaft; 503 , rotating shaft; 504, first large gear; 505, first small gear; 506, second small gear; 507, second large gear; 600, steel casing assembly; 601, top steel casing; 602, middle steel casing; 603, bottom steel casing; 604, connecting pipe; 605, positioning column; 606, receiving sleeve; 607, locking groove; 608, screw hole; 609, limiting stud; 700, conveying assembly; 701, top sleeve; 702, middle sleeve; 703, bottom sleeve; 704, spiral sheet; 705, spline socket; 706, spline pipe; 707, limiting hole; 708, limiting pin; 801, socket; 802, drive shaft; 803, block; 804, servo. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-7 This application is described in further detail.

[0043] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The embodiment of the present application discloses a silt layer drilling and grouting device and a construction method for a hydropower station.

[0046] Please refer to Figures 1 to 3 In one embodiment of the present application, a silt layer drilling and grouting device for a hydropower station includes a carrier 100. The carrier 100 is configured as a chassis with a crawler walking mechanism. The carrier 100 can be modified through a crawler excavator chassis. The carrier 100 can be used to conveniently and quickly drive the drilling and grouting device to move as a whole.

[0047] Please refer to Figures 1 to 3 In one embodiment of the present application, a swing arm mechanism 200 is installed on the carrier 100, and a mounting arm 205 is installed on the swing arm mechanism 200. The swing arm mechanism 200 can conveniently adjust the angle and position of the mounting arm 205. Combined with the carrier 100, the drilling position of the pile hole can be conveniently adjusted, which is beneficial to ensure the construction accuracy of the pile hole.

[0048] Please refer to Figures 1 to 3 In one embodiment of the present application, a sliding mechanism 300 is provided on the installation arm 205, a rotary drilling mechanism 400 is installed on the sliding mechanism 300, and a hole cleaning and pile pouring mechanism 500 is provided outside the rotary drilling mechanism 400; the sliding mechanism 300 can drive the rotary drilling mechanism 400 and the hole cleaning and pile pouring mechanism 500 to move along the length direction of the installation arm 205, so as to accurately control the depth of the pile hole, the rotary drilling mechanism 400 and the hole cleaning and pile pouring mechanism 500 are coaxially arranged, and the hole cleaning and pile pouring mechanism 500 can be detachably connected to an external sludge discharge device and a concrete storage device respectively; the hole cleaning and pile pouring mechanism 500 can discharge the sludge through the sludge discharge device in time during the drilling process, and can pour the concrete in the concrete storage device into the pile hole in time after the drilling is completed. In this way, not only can the drilling and pile pouring be smoothly carried out in the sludge layer, but also the construction efficiency and pile quality of the drilling and pile pouring can be improved.

[0049] Please refer to Figures 1 to 4In one embodiment of the present application, the swing arm mechanism 200 includes a first connecting arm 201, a second connecting arm 202 and a connecting seat 203, the first connecting arm 201 and the second connecting arm 202 are respectively hingedly connected to different positions on the carrier 100, the ends of the first connecting arm 201 and the second connecting arm 202 away from the carrier 100 are respectively hingedly connected to different positions on the connecting seat 203, the end of the first connecting arm 201 close to the carrier 100 is coaxially hingedly connected with a first telescopic member 204, the telescopic end of the first telescopic member 204 is coaxially hingedly connected to the end of the second connecting arm 202 close to the connecting seat 203, the telescopic end of the first telescopic member 204 is coaxially hingedly connected to the end of the second connecting arm 202 close to the connecting seat 203, the telescopic movement of the first telescopic member 204 can stably and reliably drive the first connecting arm 201 and the second connecting arm 202 to swing, and the swing angle of the connecting seat 203 can be controlled by the swing of the first connecting arm 201 and the second connecting arm 202.

[0050] Please refer to Figures 1 to 4 In one embodiment of the present application, the mounting arm 205 is hingedly connected to the connecting seat 203, and a second telescopic member 206 is hingedly connected between the mounting arm 205 and the connecting seat 203. The telescopic movement of the second telescopic member 206 can stably and reliably drive the mounting arm 205 to swing on the connecting seat 203, thereby conveniently and quickly adjusting the working angles of the sliding mechanism 300, the rotary drilling mechanism 400, and the hole cleaning and pile pouring mechanism 500.

[0051] Please refer to Figures 1 to 4 In one embodiment of the present application, a support rod 207 is slidably connected inside the mounting arm 205, a third telescopic member 208 is abutted and connected between the inner end of the support rod 207 and the mounting arm 205, the outer end of the support rod 207 extends to the lower end of the mounting arm 205, and a support plate 209 is fixedly connected to the outer end of the support rod 207. The support rod 207 and the support plate 209 can be extended downward and supported on the ground by the third telescopic member 208, which further increases the stability and reliability of the mounting arm 205 during operation, which is conducive to ensuring the accuracy and safety of construction.

[0052] Please refer to Figures 1 to 5In one embodiment of the present application, the sliding mechanism 300 includes a first sliding seat 301, the first sliding seat 301 is slidably connected to the mounting arm 205, a fourth telescopic member 302 is fixedly connected to the mounting arm 205 and arranged along the sliding direction of the first sliding seat 301, the telescopic end of the fourth telescopic member 302 is fixedly connected to the first sliding seat 301, and the fourth telescopic member 302 can stably and reliably drive the first sliding seat 301 to slide on the mounting arm 205. The rotary drilling mechanism 400 is mounted on the first sliding seat 301, and the rotary drilling mechanism 400 moves with the movement of the first sliding seat 301, so as to conveniently and quickly control the rotary drilling depth of the rotary drilling mechanism 400 during operation.

[0053] In a specific embodiment of the present application, the first telescopic member 204, the second telescopic member 206, the third telescopic member 208 and the fourth telescopic member 302 are all configured as hydraulic telescopic cylinders, which can provide powerful force output, can cope with heavy loads, and can accurately control the magnitude of the force. It has excellent stability, stable motion during operation, and can withstand lateral forces and eccentric loads. The stroke adjustment is flexible, different stroke lengths can be customized, and stepless speed regulation can be achieved. Reliable sealing performance prevents hydraulic oil leakage, and the seal has a long life. In addition, it is easy to realize automatic control, can be integrated with electronic control systems, has a fast response speed, and can complete high-precision movements. It is beneficial to improve production efficiency and ensure work reliability during the construction process of bored piles.

[0054] It is understandable that in other specific embodiments of the present application, the first telescopic member 204, the second telescopic member 206, the third telescopic member 208 and the fourth telescopic member 302 can also be configured as electric push rods or pneumatic cylinders. The electric push rods are easy to operate, driven by electricity, can accurately control the position and speed, are clean and pollution-free, have low maintenance costs, are small in size and easy to install. The pneumatic cylinders use compressed air as a power source, have fast response speed, low cost, good corrosion resistance, simple structure and are easy to install and maintain.

[0055] Please refer to Figures 1 to 5In one embodiment of the present application, the rotary drilling mechanism 400 includes a driving shaft 401, the driving shaft 401 is rotatably connected to the first sliding seat 301, the mounting arm 205 is slidably connected to a second sliding seat 402 corresponding to the driving shaft 401, a driving member 403 is fixedly mounted on the second sliding seat 402, the output shaft of the driving member 403 is coaxially fixedly connected to the driving shaft 401, and the driving member 403 can drive the driving shaft 401 to rotate. The end of the driving shaft 401 away from the driving member 403 is detachably connected to a plurality of intermediate shafts 404 coaxially plugged in sequence, and the lower end of the intermediate shaft 404 farthest from the driving shaft 401 is detachably connected to a working shaft 405, and the driving shaft 401 will drive the working shaft 405 to rotate through the intermediate shaft 404. The end of the working shaft 405 away from the intermediate shaft 404 is fixedly connected to a rotary digging disc 406, and the rotary digging disc 406 is provided with a plurality of centrally symmetrically arranged feed slots 407. The rotary digging disc 406 is fixedly connected to rotary digging teeth 408 at the positions of the feed slots 407, and the rotary digging teeth 408 are obliquely arranged. The working shaft 405 can drive the rotary digging disc 406 and the rotary digging teeth 408 to rotate, and the rotary digging teeth 408 will break the silt and discharge the silt through the feed slots 407 in the process of rotation in coordination with the descent of the first sliding seat 301, so that drilling in the silt layer can be smoothly achieved.

[0056] In a specific embodiment of the present application, the driving member 403 is configured as a hydraulic motor, which can generate a strong output torque, provide a strong power source for the rotary drilling mechanism 400, and maintain a stable torque at low speed. It also has good speed regulation performance, and can achieve stepless speed regulation and a wide speed regulation range by adjusting the flow of the hydraulic system to meet different speed requirements. At the same time, the hydraulic motor has a simple structure, high reliability and durability, strong overload resistance, and can operate stably for a long time in harsh environments, reducing maintenance costs. It is also easy to realize automatic control, can be integrated with the hydraulic control system, has a fast response speed, and can accurately control the speed, steering and torque.

[0057] It is understandable that in other embodiments of the present application, the driving member 403 can also be configured as an electric drive or pneumatic drive device. The electric drive is clean and environmentally friendly, has high control accuracy, high efficiency and low maintenance cost, and is suitable for occasions with high requirements on the environment and control accuracy. The pneumatic drive uses compressed air as power, has low cost, fast response and high safety, and is often used in some occasions with high speed requirements and light loads, such as some links of automated production lines.

[0058] Please refer to Figures 1 to 6In one embodiment of the present application, the hole cleaning pile grouting mechanism 500 includes a mounting seat 501, the mounting seat 501 is fixedly connected to the bottom of the first sliding seat 301, the bottom of the mounting seat 501 is detachably connected to a steel casing assembly 600, a conveying assembly 700 is installed inside the steel casing assembly 600, a hollow shaft 502 is rotatably connected inside the mounting seat 501, the hollow shaft 502 is transmission-connected to the conveying assembly 700, and the hollow shaft 502 is rotatably sleeved on the driving shaft 4 01, the second sliding seat 402 is internally connected to a rotating shaft 503, on which a first large gear 504 and a first small gear 505 are coaxially fixedly mounted, a second small gear 506 is mounted on the hollow shaft 502 corresponding to the first large gear 504, and a second large gear 507 is mounted on the driving shaft 401 corresponding to the first small gear 505, the first large gear 504 meshes with the second small gear 506, and the first small gear 505 meshes with the second large gear 507. During the rotation process, the driving shaft 401 can accelerate the rotation of the rotating shaft 503 through the first small gear 505 and the second large gear 507, and the rotating shaft 503 can accelerate the rotation of the hollow shaft 502 through the first large gear 504 and the second small gear 506. By utilizing the acceleration gear transmission method to make the working speed of the conveying assembly 700 greater than the working speed of the rotary drilling mechanism 400, not only can the silt be quickly removed and the hole be quickly cleaned during the rotary drilling construction, but concrete can also be quickly poured into the pile hole during the pile pouring process.

[0059] During the construction process, when drilling a silt layer, the driving shaft 401 is driven to rotate in the forward direction by the driving member 403, and the hollow shaft 502 will drive the conveying assembly 700 to quickly discharge the silt passing through the feed trough 407 from the steel casing assembly 600; when pouring piles in the silt layer, the driving shaft 401 is driven to rotate in the reverse direction by the driving member 403, and the hollow shaft 502 will drive the conveying assembly 700 to quickly pour concrete into the pile hole through the steel casing assembly 600.

[0060] Please refer to Figures 1 to 6In one embodiment of the present application, the steel casing assembly 600 includes a top steel casing 601, the lower end of the top steel casing 601 is detachably connected to a plurality of intermediate steel casings 602 that are coaxially connected in sequence, the lower end of the lowest intermediate steel casing 602 is detachably connected to a bottom steel casing 603, the outer side of the top steel casing 601 is sealed and fixedly connected with a connecting pipe 604 near the top, and the end of the connecting pipe 604 away from the top steel casing 601 can be detachably connected to an external sludge discharge device and a concrete storage device respectively; the detachable connection between the top steel casing 601, the intermediate steel casing 602 and the bottom steel casing 603 can meet the depth design requirements of the pile hole by adding an appropriate amount of the intermediate steel casing 602.

[0061] Please refer to Figures 1 to 6 In one embodiment of the present application, a plurality of positioning columns 605 arranged symmetrically on the outside of the top steel casing 601 and the middle steel casing 602 are fixedly connected near the bottom, a receiving sleeve 606 is sealingly and rotatably connected on the outside of the middle steel casing 602 and the bottom steel casing 603 near the top, a locking groove 607 is provided on the receiving sleeve 606 corresponding to the positioning column 605, a screw hole 608 is provided on the outside of the top steel casing 601 and the middle steel casing 602 near the bottom corresponding to the locking groove 607, and a limiting stud 609 is screwed inside the screw hole 608. At the same time, the limiting stud 609 can ensure the stable and reliable connection between the top steel casing 601, the middle steel casing 602 and the bottom steel casing 603, When drilling in a silt layer, it is only necessary to connect the connecting pipe 604 to an external silt discharge device, so that the silt can be conveniently discharged through the external silt discharge device. When pouring piles in a silt layer, it is only necessary to connect the connecting pipe 604 to an external concrete storage device, so that the concrete in the external concrete storage device can be conveniently input into the steel casing assembly 600 through the connecting pipe 604 to realize the pile pouring operation of the pile hole.

[0062] Please refer to Figures 1 to 6 In one embodiment of the present application, the conveying assembly 700 includes a top casing 701, the lower end of the top casing 701 is detachably connected to a plurality of intermediate casings 702 that are coaxially connected in sequence, and the lower end of the lowest intermediate casing 702 is detachably connected to a bottom casing 703. The detachable connection between the top casing 701, the intermediate casing 702 and the bottom casing 703 can be used to meet the depth design requirements of the pile hole by adding an appropriate amount of the intermediate casing 702.

[0063] Please refer to Figures 1 to 6In one embodiment of the present application, the outer sides of the top casing 701, the middle casing 702 and the bottom casing 703 are respectively fixedly connected with spiral pieces 704 connected in sequence. The design of the spiral pieces 704 is highly adaptable. It can not only transport sludge with high fluidity and viscosity, but also adapt to concrete mixed with stones. It can also continuously and stably transport sludge or concrete inside the steel casing assembly 600, which can avoid interruption events during the transportation process, is conducive to improving the transportation efficiency, and can achieve a large transportation volume. It can also adapt to different transportation distances and angles to meet complex layout requirements. The structure is simple and reliable, with few equipment components, low manufacturing and installation costs, stable operation, low noise, low failure rate, little damage to materials, and good sealing.

[0064] Please refer to Figures 1 to 6 In one embodiment of the present application, a spline socket 705 is formed at the top of the top sleeve 701, the middle sleeve 702 and the bottom sleeve 703, and a spline tube 706 is fixedly connected between the hollow shaft 502 and the bottoms of the top sleeve 701 and the middle sleeve 702 corresponding to the spline socket 705. The spline socket 705 and the spline tube 706 ensure that the hollow shaft 502 can stably and reliably drive the top sleeve 701, the middle sleeve 702 and the bottom sleeve 703 to rotate.

[0065] Please refer to Figures 1 to 6 In one embodiment of the present application, a limiting hole 707 is provided on the top sleeve 701, the middle sleeve 702 and the bottom sleeve 703 corresponding to the spline jack 705 and the spline tube 706, and a radially arranged limiting pin 708 is detachably connected inside the limiting hole 707. The limiting hole 707 and the limiting pin 708 can axially lock the hollow shaft 502, the top sleeve 701, the middle sleeve 702 and the bottom sleeve 703, thereby ensuring the stability and reliability of the conveying assembly 700 during the lifting process.

[0066] In a specific implementation of the present application, the intermediate shaft 404, the intermediate steel casing 602, and the intermediate sleeve 702 are of equal length, so as to facilitate the disassembly and assembly of the intermediate shaft 404, the intermediate steel casing 602, and the intermediate sleeve 702 during work.

[0067] Please refer to Figures 1 to 7In one embodiment of the present application, the mounting arm 205 is fixedly connected with a holder 801 corresponding to the steel casing assembly 600, the holder 801 is connected with a driving shaft 802 in a rotationally symmetrical manner with the center of the steel casing assembly 600, the driving shaft 802 is fixedly connected with a clamping block 803, the inner side surfaces of the two clamping blocks 803 are opposite to each other and have arc-shaped bayonet ports corresponding to the outer side surfaces of the steel casing assembly 600, and the outer ends of the driving shaft 802 passing through the holder 801 are fixedly connected with a steering gear 804. The steering gear 804 can drive the driving shaft 802 to rotate on the holder 801, and the driving shaft 802 will synchronously drive the clamping block 803 to rotate. When the two clamping blocks 803 swing synchronously to the middle, the bayonet ports on the clamping block 803 can clamp the steel casing assembly 600, thereby fixing the steel casing assembly 600, so that the steel casing assembly 600 can be more conveniently disassembled and assembled during work.

[0068] In one embodiment of the present application, a construction method of a silt layer drilling pile device for a hydropower station includes the following steps: Step 1: Prepare the required materials and equipment, including silt layer drilling and grouting equipment for hydropower stations, silt discharge equipment, concrete, etc.

[0069] Step 2: According to the design drawings, use surveying instruments to determine the pile positions at the construction site, measure and lay out the lines, and make marks.

[0070] Step 3: Move the pile-drilling device as a whole to the construction site via the carrier 100.

[0071] Step 4: Connect the hole cleaning and pile pouring mechanism 500 to an external sludge discharge device.

[0072] Step 5: Adjust the position and angle of the installation arm 205 by controlling the swing arm mechanism 200 so that the center of the rotary drilling mechanism 400 on the installation arm 205 is vertically aligned with the center of the pile position.

[0073] Step 6: Control the sliding mechanism 300 to drive the rotary drilling mechanism 400 to descend to achieve drilling. The depth of the drilling should be determined according to the design requirements. The silt in the hole is discharged synchronously through the silt discharge device by using the hole cleaning and pile pouring mechanism 500. After the drilling is completed, the external silt discharge device is removed.

[0074] Step 6.1, when the sliding mechanism 300 drives the rotary drilling mechanism 400 to descend to the length of the intermediate shaft 404, one layer of the intermediate shaft 404, the intermediate steel casing 602 and the intermediate sleeve 702 is added until the designed depth of the pile hole is reached.

[0075] Step 7: Connect the hole cleaning pile pouring mechanism 500 to an external concrete storage device, and inject concrete into the hole through the hole cleaning pile pouring mechanism 500. During the concrete pouring process, attention should be paid to controlling the concrete pouring speed and pressure to ensure the quality of the concrete.

[0076] Step 7.1: After the concrete pouring is completed, the connection between the top steel casing 601 and the middle steel casing 602 located at the uppermost layer is disconnected, so that the middle steel casing 602 and the bottom steel casing 603 are temporarily retained inside the pile hole.

[0077] Step 7.2, promptly drive the driving shaft 401 to rotate in the opposite direction through the driving member 403, and use the sliding mechanism 300 to drive the conveying assembly 700 and the rotary drilling mechanism 400 to move upward, and remove one layer of the intermediate shaft 404 and the intermediate sleeve 702 every time the intermediate shaft 404 moves upward until the conveying assembly 700 and the rotary drilling mechanism 400 are removed.

[0078] Step 7.3: Fill the uppermost middle steel casing 602 with concrete again and smooth it.

[0079] Step 8: After the concrete solidifies, the top steel casing 601 and the middle steel casing 602 at the top are connected together, and the middle steel casing 602 and the bottom steel casing 603 in the hole cleaning and pile pouring mechanism 500 are pulled out layer by layer using the sliding mechanism 300. During the pulling out process, attention should be paid to controlling the speed and verticality.

[0080] Step 9: Clean up the construction site and remove the dirt and impurities generated during the construction process to ensure the cleanliness of the construction site.

[0081] 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. A silt layer drilling pile grouting device for a hydropower station, characterized in that: The invention comprises a carrier (100), wherein a swing arm mechanism (200) is mounted on the carrier (100), a mounting arm (205) is mounted on the swing arm mechanism (200), a sliding mechanism (300) is arranged on the mounting arm (205), a rotary drilling mechanism (400) is mounted on the sliding mechanism (300), and a hole cleaning and pile pouring mechanism (500) is arranged outside the rotary drilling mechanism (400); the rotary drilling mechanism (400) and the hole cleaning and pile pouring mechanism (500) are coaxially arranged, and the hole cleaning and pile pouring mechanism (500) can be detachably connected to an external sludge discharge device and a concrete storage device respectively; The sliding mechanism (300) comprises a first sliding seat (301), the first sliding seat (301) is slidably connected to the mounting arm (205), a fourth telescopic member (302) arranged along the sliding direction of the first sliding seat (301) is fixedly connected to the mounting arm (205), a telescopic end of the fourth telescopic member (302) is fixedly connected to the first sliding seat (301), and the rotary drilling mechanism (400) is mounted on the first sliding seat (301); The rotary drilling mechanism (400) comprises a driving shaft (401), the driving shaft (401) being rotatably connected to the first sliding seat (301), the mounting arm (205) being slidably connected to a second sliding seat (402) corresponding to the driving shaft (401), a driving member (403) being fixedly mounted on the second sliding seat (402), an output shaft of the driving member (403) being coaxially fixedly connected to the driving shaft (401), and a plurality of roots which are detachably connected to one end of the driving shaft (401) away from the driving member (403) A secondary coaxially plugged intermediate shaft (404), the lower end of the intermediate shaft (404) farthest from the driving shaft (401) is detachably connected to a working shaft (405), one end of the working shaft (405) away from the intermediate shaft (404) is fixedly connected to a rotary digging disc (406), a plurality of centrally symmetrically arranged feed grooves (407) are provided on the rotary digging disc (406), and rotary digging teeth (408) are fixedly connected to the positions of the feed grooves (407) on the rotary digging disc (406), and the rotary digging teeth (408) are obliquely arranged; The hole cleaning and pile pouring mechanism (500) comprises a mounting seat (501), wherein the mounting seat (501) is fixedly connected to the bottom of the first sliding seat (301), and a steel casing assembly (600) is detachably connected to the bottom of the mounting seat (501), and a conveying assembly (700) is installed inside the steel casing assembly (600). A hollow shaft (502) is rotatably connected inside the mounting seat (501), and the hollow shaft (502) is transmission-connected to the conveying assembly (700), and the hollow shaft (502) is rotatably sleeved on the outer side of the driving shaft (401). The second sliding seat (402) is internally rotatably connected to a rotating shaft (503), on which a first large gear (504) and a first small gear (505) are coaxially fixedly mounted, a second small gear (506) is mounted on the hollow shaft (502) corresponding to the first large gear (504), a second large gear (507) is mounted on the driving shaft (401) corresponding to the first small gear (505), the first large gear (504) is meshed with the second small gear (506), and the first small gear (505) is meshed with the second large gear (507).

2. A silt layer drilling pile grouting device for a hydropower station according to claim 1, characterized in that: The swing arm mechanism (200) comprises a first connecting arm (201), a second connecting arm (202) and a connecting seat (203); the first connecting arm (201) and the second connecting arm (202) are respectively hingedly connected to different positions on the carrier (100); one end of the first connecting arm (201) and the second connecting arm (202) away from the carrier (100) are respectively hingedly connected to different positions on the connecting seat (203); one end of the first connecting arm (201) close to the carrier (100) is coaxially hingedly connected to a first telescopic member (204); the telescopic end of the first telescopic member (204) is coaxially hingedly connected to one end of the second connecting arm (202) close to the connecting seat (203); the mounting arm (205) is hingedly connected to the connecting seat (203); and a second telescopic member (206) is hingedly connected between the mounting arm (205) and the connecting seat (203).

3. A silt layer drilling pile grouting device for a hydropower station according to claim 2, characterized in that: A support rod (207) is slidably connected inside the mounting arm (205); a third telescopic member (208) is abutted and connected between the inner end of the support rod (207) and the mounting arm (205); the outer end of the support rod (207) extends to the lower end of the mounting arm (205); and the outer end of the support rod (207) is fixedly connected to a support plate (209).

4. The silt layer drilling pile grouting device for a hydropower station according to claim 1, characterized in that: The steel casing assembly (600) comprises a top steel casing (601), the lower end of which is detachably connected to a plurality of coaxially connected intermediate steel casings (602), the lower end of which is detachably connected to a bottom steel casing (603), the outer side of which is sealed and fixedly connected to a connecting pipe (604) near the top, the end of which is away from the top steel casing (601) can be detachably connected to an external sludge discharge device and a concrete storage device respectively; the top steel casing (601) and the intermediate steel casing (602) are connected to the bottom steel casing (603) at the lower end thereof; A plurality of positioning columns (605) arranged symmetrically with respect to the center are fixedly connected to the outer side of the steel casing (602) near the bottom, and a receiving sleeve (606) is sealingly rotatably connected to the outer sides of the middle steel casing (602) and the bottom steel casing (603) near the top, and a locking groove (607) is provided on the receiving sleeve (606) corresponding to the positioning column (605), and a screw hole (608) is provided on the outer sides of the top steel casing (601) and the middle steel casing (602) near the bottom, corresponding to the locking groove (607), and a limiting stud (609) is screwed inside the screw hole (608).

5. The device for drilling and pouring piles in a silt layer for a hydropower station according to claim 1, characterized in that: The conveying assembly (700) comprises a top sleeve (701), the lower end of the top sleeve (701) is detachably connected to a plurality of middle sleeves (702) that are coaxially connected in sequence, the lower end of the middle sleeve (702) in the lowest layer is detachably connected to a bottom sleeve (703), the outer sides of the top sleeve (701), the middle sleeve (702) and the bottom sleeve (703) are respectively fixedly connected to spiral sheets (704) that are connected in sequence, and the top sleeve (701), the middle sleeve (702) and the bottom sleeve (703) are 3) are provided with a spline socket (705) at the top, the hollow shaft (502) and the top sleeve (701) and the bottom of the middle sleeve (702) are fixedly connected with a spline tube (706) corresponding to the spline socket (705), and the top sleeve (701), the middle sleeve (702) and the bottom sleeve (703) are provided with a limit hole (707) corresponding to between the spline socket (705) and the spline tube (706), and the limit hole (707) is detachably connected with a radially arranged limit pin (708) inside.

6. The device for drilling and pouring piles in a silt layer for a hydropower station according to claim 1, characterized in that: A holder (801) is fixedly connected to the mounting arm (205) corresponding to the steel casing assembly (600); a driving shaft (802) is rotationally connected to the holder (801) in a symmetrical manner about the center of the steel casing assembly (600); a clamping block (803) is fixedly connected to the driving shaft (802); arc-shaped clamping slots are provided on the opposite inner side surfaces of the two clamping blocks (803) corresponding to the outer side surfaces of the steel casing assembly (600); and the outer end of the driving shaft (802) passing through the holder (801) is fixedly connected to a steering gear (804).

7. The construction method of a silt layer drilling pile device for a hydropower station according to claim 1 comprises the following steps: Step 1: Prepare the required materials and equipment, including pile drilling equipment, sludge discharge equipment, and concrete; Step 2: According to the design drawings, use measuring instruments to determine the pile position at the construction site, measure and lay out the lines, and mark them; Step 3: Using the carrier (100), the pile boring device is moved as a whole to the construction site; Step 4, connecting the hole cleaning and pile pouring mechanism (500) to an external sludge discharge device; Step 5: adjusting the position and angle of the installation arm (205) by controlling the swing arm mechanism (200) so that the center of the rotary drilling mechanism (400) on the installation arm (205) is vertically aligned with the center of the pile position; Step 6: Control the sliding mechanism (300) to drive the rotary drilling mechanism (400) to descend to achieve drilling. The depth of the drilling hole should be determined according to the design requirements. The hole cleaning and pile pouring mechanism (500) is used to discharge the sludge in the hole through the sludge discharge device at the same time. After drilling is completed, remove the external sludge drain; Step 7, connecting the hole cleaning pile pouring mechanism (500) to an external concrete storage device, and injecting concrete into the hole through the hole cleaning pile pouring mechanism (500). During the concrete pouring process, attention should be paid to controlling the concrete pouring speed and pressure to ensure the quality of the concrete; Step 8: After the concrete solidifies, the hole cleaning and pile pouring mechanism (500) is pulled out using the sliding mechanism (300), and during the pulling out process, attention should be paid to controlling the speed and verticality; Step 9: Clean up the construction site and remove the dirt and impurities generated during the construction process to ensure the cleanliness of the construction site.

Images