Hidden type karst cave pile foundation pile forming auxiliary construction device

Abstract

The invention discloses a hidden type karst cave pile foundation pile forming auxiliary construction device which comprises an acid etching pipe part which is of a pipe body structure for rotationally dissolving a karst cave shell, and the upper end of the acid etching pipe part is provided with a butt joint connector; the connecting pipe part is in threaded connection with the upper end of the acid etching pipe part, and the inner-layer pipe and the outer-layer pipe are both communicated with the acid etching pipe part; through the arrangement of the acid etching pipe part and the connecting pipe part, acid water can be conveyed and guided along a specified path, the shell of the karst cave can be scoured and corroded by the acid water in a trailing rotary flushing manner, the shell of the karst cave can be rapidly dissolved, and in the hole dissolving process, the shell of the karst cave can be rapidly dissolved. According to the device, the stirring bin is arranged, the neutralized slurry is sucked, recycled, mixed and stirred into the stirring bin, meanwhile, the reinforcing raw materials are put into the slurry, and the inner wall of a dissolved hole is coated, filled and reinforced by stirred and mixed concrete slurry, so that the safety and stability of a pore channel after the dissolved hole is guaranteed, and the service life of the dissolved hole is prolonged. And adverse effects caused by cracks of the karst cave shell are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of building construction equipment, in particular to a concealed cave pile foundation pile forming auxiliary construction device. Background Art

[0002] When constructing pile foundations in karst areas, the problem of hidden caves is often encountered. Hidden caves refer to those caves that are not directly exposed on the surface but hidden underground. Since these caves are not easy to be found, they often bring a series of problems during the construction process. For example, when drilling, a void may suddenly be encountered, resulting in the drill bit falling, the drill hole being deviated, or the pile foundation bearing capacity being insufficient. In order to solve these problems, it is necessary to develop special construction equipment and technologies to assist in pile construction.

[0003] Problems existing in current construction equipment when drilling:

[0004] Traditional drilling equipment will generate large vibrations during the drilling process. This vibration may have little effect on the stable rock layer, but it may cause cracks or even collapse in the fragile shell of the hidden cave (soluble rocks such as limestone and gypsum), thus causing safety accidents. During the drilling process, once the drill bit enters the cave, due to the complex and unstable internal structure of the cave, it is difficult for traditional construction methods to effectively strengthen and maintain the borehole at the cave location. This may cause the rock around the borehole to loosen, further reducing the stability and safety of the pile foundation.

[0005] Therefore, a concealed cave pile foundation auxiliary construction device is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a hidden cave pile foundation auxiliary construction device to solve the problems of the hidden cave pile foundation construction on the stability of the cave and the lack of effective reinforcement measures.

[0007] To achieve the above object, the present invention provides the following technical solution: a concealed cave pile foundation pile auxiliary construction device, comprising:

[0008] The acid-etched pipe part is a pipe structure for rotating the outer shell of the cave, and its upper end is provided with a butt joint;

[0009] The connecting pipe part is threadedly connected to the upper end of the acid-etched pipe part, and both the inner and outer layer pipes are connected to the acid-etched pipe part;

[0010] The acid-etched pipe part includes a main pipe, an acid liquid pipeline is integrally arranged at the middle and lower position inside the main pipe, and the hole of the acid liquid pipeline extends downward to penetrate the main pipe, and the pipe of the main pipe is fixedly arranged in sequence below the acid liquid pipeline with a discharge body of a batching bin, a gear box, a connecting plugging plate of a mixing bin, a water pump, a water pumping pipe and an air plate, the acid liquid pipeline and the discharge body of the batching bin are blocked to form the batching bin, and the discharge body of the batching bin and the connecting plugging plate of the mixing bin are blocked to form the mixing bin;

[0011] An acid water pipe is fixedly arranged inside the main pipe above the acid liquid pipeline, and a liquid pump is connected between the acid water pipe and the four-claw pipe of the acid liquid pipeline by bolts;

[0012] A synchronous motor is fixedly installed above the interior of the batching bin, and the synchronous motor is fixedly connected to a screw rod arranged inside the batching bin, the lower end of the screw rod is rotatably arranged in the central hole of the discharging body of the batching bin, and the lower end of the shaft of the screw rod is fixed to a bevel gear group rotatably arranged inside the gear box, the bevel gear group is composed of three bevel gears, and the shafts of the bevel gears located on both sides of the central axis are respectively fixedly connected to a beating screw, and a stirring wheel is arranged below the bevel gear group inside the mixing bin, and the rotating shaft of the stirring wheel is movably connected to a wind wheel arranged above the air plate through a universal joint, and the rotating shaft of the wind wheel is connected to a speed sensor fixedly arranged in the central mounting hole of the air plate, and the speed sensor is electrically connected to the control end of the synchronous motor through a line.

[0013] Preferably, the upper end of the main pipe is integrally provided with an internal thread mounting head which is threadedly connected to the connecting pipe portion.

[0014] Preferably, the acid liquid pipeline is composed of a four-claw tube and four holes, and the four holes are respectively connected to the four claws of the four-claw tube.

[0015] Preferably, the upper surface of the batching bin is arranged as an arc surface, the structural arrangement of the water pumping pipe is the same as that of the acid liquid pipeline, but it is not interlaced with the acid liquid pipeline, and a collecting pipe with one end open toward the lower port of the acid liquid pipeline is fixedly arranged at the lower port, and the water pump is connected between the mixing bin connecting plug plate and the four-claw type tube of the water pumping pipe by bolts, a through mounting hole is opened in the center of the air plate, and a plurality of wind holes which are narrow at the top and wide at the bottom are opened on the surrounding side of the mounting hole.

[0016] Preferably, the space of the batching bin is much larger than the space of the mixing bin, the gear box is located in the upper middle position inside the mixing bin, and the upper surface is set as an arc surface, an exhaust pipeline open upwardly is opened between the holes of the acid pipeline inside the tube shell of the main pipe, and the lower end of the exhaust pipeline passes from the position of the water pump to the inside of the main pipe.

[0017] Preferably, a liquid replenishing interface is integrally provided at the upper end of the acid water pipe at a position slightly below the internal thread mounting head, and a through hole is provided inside the main pipe corresponding to the liquid replenishing interface.

[0018] Preferably, the beating screws are all rotatably connected to the inside of a beating tube correspondingly opened inside the main pipe.

[0019] Preferably, the structure of the connecting pipe portion includes a main pipe, an internal thread mounting head, a joint connected to the internal thread mounting head at the opposite end of the internal thread mounting head, an exhaust pipe, an acid water pipe and a liquid replenishment interface.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention can cooperate with the connecting pipe part to guide the acid water along the specified path through the arrangement of the main pipe, the acid liquid pipeline, the acid water pipe and the pump, so that the acid water can be washed and dissolved on the shell of the cave in a tailing and rotating manner, so as to achieve rapid melting of the shell of the cave. Compared with the existing drilling rig drilling equipment, while ensuring smooth drilling, the stability of the drilling will be greatly improved, and the influence of a series of unstable factors caused by strong earthquakes during drilling can be avoided;

[0022] 2. The present invention can perform suction and recovery of neutralized and slurry water into the mixing bin and perform mixed stirring during the acid etching and dissolving process of the pores through the arrangement of the main pipe, acid liquid pipeline, exhaust pipeline, batching bin, gear box, beating pipe, mixing bin, pumping pipe, collecting pipe, air plate, acid liquid pipeline, acid water pipe, pumping pump, screw rod, synchronous motor, bevel gear set, beating screw, stirring wheel, universal shaft, wind wheel and speed sensor. At the same time, with the speed detection and feedback of the speed sensor, the synchronous motor can dynamically and synchronously drive the screw rod and the bevel gear set, realize the delivery of reinforcement raw materials into the slurry water and the coating, filling and reinforcement of the inner wall of the pores by the concrete slurry after stirring and mixing, so as to ensure the safety and stability of the pores behind the pores and avoid the adverse effects caused by the cracks in the pore shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the overall structural view of the present invention;

[0024] Figure 2 It is a schematic diagram of the acid-etched pipe portion of the present invention;

[0025] Figure 3 is a cross-sectional view of an acid-etched pipe portion of the present invention;

[0026] Figure 4 It is a cross-sectional view of the acid-etched pipe portion of the present invention;

[0027] Figure 5 It is a cross-sectional view of the main pipe and its associated structure of the present invention;

[0028] Figure 6 It is a schematic diagram of the internal structure of the acid-etched pipe part of the present invention;

[0029] Figure 7 It is a schematic diagram of the spiral ribbon rod and its connection structure of the present invention;

[0030] Figure 8 For the present invention Figure 3 Enlarged view of point A in the middle.

[0031] In the figure:

[0032] 1. Acid-etched pipe; 11. Main pipe; 111. Internal thread mounting head; 112. Acid liquid pipeline; 113. Exhaust pipeline; 114. Batching bin; 115. Gear box; 116. Beating pipe; 117. Mixing bin; 118. Pumping pipe; 1181. Retracting pipe; 119. Gas plate; 12. Acid water pipe; 121. Liquid pump; 122. Liquid replenishment interface; 13. Screw rod; 131. Synchronous motor;

[0033] 132, bevel gear set; 133, beating screw; 134, stirring wheel; 135, universal shaft; 136, wind wheel; 137, speed sensor; 14, water pump;

[0034] 2. Connect the pipes. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 8 The present invention provides a technical solution for a concealed cave pile foundation auxiliary construction device:

[0037] A concealed cave pile foundation auxiliary construction device, comprising:

[0038] The acid-etched pipe part 1 is a pipe structure for rotating the outer shell of the cave, and its upper end is provided with a butt joint connector;

[0039] The connecting pipe part 2 is threadedly connected to the upper end of the acid-etched pipe part 1 , and both the inner and outer layer pipes are connected to the acid-etched pipe part 1 .

[0040] The acid-etched pipe part 1 includes a main pipe 11, and an acid liquid pipeline 112 is integrally arranged at the middle and lower position inside the main pipe 11. The acid liquid pipeline 112 is composed of a four-claw type pipe and four holes, and the four holes are respectively connected to the four claws of the four-claw type pipe, and the holes extend downward through the main pipe 11;

[0041] An acid water pipe 12 is fixedly arranged inside the main pipe 11 above the acid liquid pipeline 112, and a liquid replenishing interface 122 is integrally arranged at the upper end of the acid water pipe 12 at a position slightly below the internal threaded mounting head 111, and a through hole is opened inside the main pipe 11 corresponding to the liquid replenishing interface 122, and a liquid pump 121 is connected between the acid water pipe 12 and the four-claw tube of the acid liquid pipeline 112 by bolts.

[0042] During operation, the drilling machine first drives the main pipe 11. When the main pipe 11 rotates, the pump 121 pumps acid water and injects the acid water into the interior of the acid pipe 112, so that the acid water can quickly melt the cave shell in a rotary manner.

[0043] In summary, by configuring the main pipe 11, the acid pipeline 112, the acid water pipe 12 and the pump 121, the connecting pipe part 2 can be cooperated to guide the acid water along the specified path, so that the shell of the cave can be scoured and dissolved in a tailing and rotating manner, thereby achieving rapid melting of the cave shell. Compared with the current drilling rig opening equipment, while ensuring smooth drilling, the stability of the drilling will be greatly improved, and the influence of a series of unstable factors caused by strong earthquakes during drilling can be avoided.

[0044] As an embodiment of the present invention, Figures 3 to 8As shown, in the pipe of the main pipe 11, a discharge body below the batching bin 114, a gear box 115, a connecting plugging plate below the mixing bin 117, a water pump 14, a water pumping pipe 118 and an air plate 119 are fixedly arranged in sequence at intervals below the four-claw type pipe of the acid liquid pipeline 112, wherein the upper surface of the batching bin 114 is arranged as an arc surface, the structural arrangement of the water pumping pipe 118 is the same as that of the acid liquid pipeline 112, but it is not staggered and connected with the acid liquid pipeline 112, and a receiving pipe 1181 with one end open toward the lower port of the acid liquid pipeline 112 is fixedly arranged at the lower port, the water pump 14 is connected between the connecting plugging plate of the mixing bin 117 and the four-claw type pipe of the water pumping pipe 118 by bolts, and the center of the air plate 119 is opened. A through mounting hole is provided, and a number of air holes which are narrow at the top and wide at the bottom are opened around the mounting hole. The four-claw type tube of the acid liquid pipeline 112 and the discharge body of the batching bin 114 are blocked to form the batching bin 114, and the discharge body of the batching bin 114 and the connecting plugging plate of the mixing bin 117 are blocked to form the mixing bin 117. The space of the batching bin 114 is much larger than the space of the mixing bin 117. The gear box 115 is located in the middle and upper position inside the mixing bin 117, and the upper surface is set to an arc surface. An exhaust pipeline 113 which is open upward is opened between the holes of the acid liquid pipeline 112 inside the tube shell of the main pipe 11, and the lower end of the exhaust pipeline 113 passes from the position of the water pump 14 to the pipe of the main pipe 11. A synchronous motor 131 is fixedly arranged above the inside of the batching bin 114, and the shaft of the synchronous motor 131 is fixedly connected to the screw rod 13 arranged inside the batching bin 114 through a coupling. The lower end of the screw rod 13 is rotatably arranged in the central hole of the material discharge body of the batching bin 114, and the shaft of the screw rod 13 extends downward to penetrate the inside of the mixing bin 117, and is fixed to the middle bevel wheel of the bevel gear set 132 rotatably arranged inside the gear box 115. The bevel gear set 132 is composed of three bevel gears, and all of them are rotatably arranged inside the gear box 115, wherein the shafts of the bevel gears located on both sides of the central axis are respectively fixedly connected to a beating screw 133 The beating screws 133 are all rotatably connected to the beating tube 116 correspondingly opened inside the main pipe 11, the rotating shaft of the middle bevel wheel of the bevel gear set 132 extends downward and is rotatably connected to the stirring wheel 134 arranged at the bottom of the stirring chamber 117, the rotating shaft of the stirring wheel 134 extends downward into the interior of the connecting plugging plate, and is movably connected to the wind wheel 136 arranged above the air plate 119 through the universal joint 135 inside the connecting plugging plate, the rotating shaft of the wind wheel 136 extends downward and is connected to the speed sensor 137 fixedly arranged in the central mounting hole of the air plate 119, and the speed sensor 137 is electrically connected to the control end of the synchronous motor 131 through a line.

[0045] During operation, after the acid water is flushed on the surface of the cave shell, it will flow to the collecting pipe 1181, and then the water pump 14 will suck and recover the neutralized slurry water through the collecting pipe 1181, and then the water will enter and be stored in the mixing chamber 117 along the water pump pipe 118 under the action of the water pump 14. At the same time, the gas generated by the reaction between the cave shell and the acid water will flow to the wind wheel 136 under the pressure of the pores on the surface of the gas plate 119, and drive the wind wheel 136 to rotate. The rotating wind wheel 136 will not only drive the stirring wheel 134 to rotate through the universal shaft 135, but also cooperate with the speed sensor 137 detects the rotational speed and feeds back to the synchronous motor 131, and then the synchronous motor 131 will dynamically drive the screw rod 13 and the bevel gear set 132 according to the rotational speed. The rotating screw rod 13 will release the cement, additives and other reinforcing raw materials stored in the batching bin 114 into the mixing bin 117 to mix them with the slurry water to form a flowing mud. The bevel gear set 132 will drive the beating screw 133 to rotate, so that the beating screw 133 can pressurize and coat the mud onto the peripheral hole wall to reinforce the corroded channel.

[0046] In summary, by setting up the main pipe 11, the acid liquid pipeline 112, the exhaust pipeline 113, the batching bin 114, the gear box 115, the beating pipe 116, the stirring bin 117, the pumping pipe 118, the collecting pipe 1181, the gas plate 119, the acid liquid pipeline 112, the acid water pipe 12, the beating pump 121, the screw rod 13, the synchronous motor 131, the bevel gear set 132, the beating screw 133, the stirring wheel 134, the universal shaft 135, the wind wheel 136 and the speed sensor 137, the acid etching pore dissolution process can be carried out. During the process, the slurry is sucked and recovered into the mixing chamber 117 and mixed and stirred. At the same time, the speed sensor 137 detects and feedbacks the speed so that the synchronous motor 131 can dynamically and synchronously drive the screw rod 13 and the bevel gear set 132, so as to add the reinforcement raw materials into the slurry and coat, fill and reinforce the inner wall of the pore with the mixed concrete slurry, so as to ensure the safety and stability of the channel behind the pore and avoid the adverse effects caused by the cracks in the karst cave shell.

[0047] As an embodiment of the present invention, Figure 1 to Figure 2 As shown, the upper end of the main pipe 11 is integrally provided with an internal thread mounting head 111 which is threadedly connected to the connecting pipe part 2 .

[0048] The structure of the connecting pipe part 2 includes a main pipe 11 , an internal thread mounting head 111 , a joint connected to the internal thread mounting head 111 at the opposite end of the internal thread mounting head 111 , an exhaust pipe 113 , an acid water pipe 12 and a liquid replenishing interface 122 .

[0049] The above structure is set up to meet the needs of different depths of dissolved holes and ensure that the auxiliary equipment can reach different cave locations.

[0050] Working principle: When working, it is first necessary to conduct pre-drilling detection to determine the location of the cave. After determining the location, arrange the drilling equipment according to the plan, and then cooperate with the drilling equipment to drill holes and lower casings at the location of the cave. When the hole is drilled above the outer shell of the cave or at a position that can contact the shell, remove the drill bit of the drilling machine, and clean the lowered casing. Then connect the auxiliary device to the drilling machine, so that the drilling machine lowers the auxiliary device along the already arranged casing. Then the auxiliary device will cooperate with the multi-section connecting pipe part 2 to move along the casing to the position of the lower end of the borehole, and stably contact the shell of the cave. Then connect the liquid replenishment interface 122 of the connecting pipe part 2 to the acid water supply tank, and energize the acid etching pipe part 1, and then the solution can be executed. The drilling operation is as follows: when performing the hole dissolution operation, the drilling machine first drives the main pipe 11, and when the main pipe 11 rotates, the pumping pump 121 pumps acid water and injects the acid water into the interior of the acid pipe 112, so that it can quickly melt the cave shell in a rotary manner (the dissolution effect of soluble rocks such as gypsum and limestone in dynamic water flow is relatively strong. The greater the flow rate of the acid water, the faster the dissolution rate and the greater the amount of dissolution, which can achieve rapid melting of the cave shell). In the rotary melting process, the acid water will flow to the collection pipe 1181 after flushing the surface of the cave shell, and then the pumping pump 14 will suck and recover the neutralized slurry through the collection pipe 1181, and then the water will enter and exist along the pumping pipe 118 under the action of the pumping pump 14. The gas generated by the reaction between the cave shell and the acid water will flow to the wind wheel 136 under the pressure of the pores on the surface of the air plate 119, and push the wind wheel 136 to rotate. The rotating wind wheel 136 will not only drive the stirring wheel 134 to rotate through the universal shaft 135, but also cooperate with the speed sensor 137 to detect the speed and feedback to the synchronous motor 131. Then the synchronous motor 131 will dynamically drive the screw rod 13 and the bevel gear set 132 according to the speed. Among them, the rotating screw rod 13 will release the reinforcement raw materials, cement, additives, etc. stored in the batching bin 114 into the mixing bin 117, so that they are mixed with the slurry water to form a flowing alkaline mud. The wheel group 132 will drive the beating screw 133 to rotate, so that the beating screw 133 can inject and coat the mud on the surrounding hole wall. During the injection, some alkaline mud will enter the gaps or holes on the inner wall of the surrounding side of the melt hole in the cave shell, and mix and neutralize with the acidic water that spreads to the surrounding side of the melt hole, thereby avoiding the unstable effect of the diffusion of acid water on the cave shell during the scouring and melting process, and reinforcing the corroded channel until the lower shell of the cave is dissolved (it will stop after dissolving through the upper shell, and will continue after contacting the lower shell), then remove the acid-etched pipe part 1 and the connecting pipe part 2, replace them with traditional drilling equipment, and continue to drill downward along the corroded channel to the specified depth, and then carry out subsequent cave treatment and pile forming operations.

[0051] It should be noted that the acid water needs to be proportioned or selected according to the actual geological conditions, including but not limited to rainwater, deionized water, sodium sulfate solution and dilute hydrochloric acid; the shaft body part of the universal shaft 135 is configured as a lightweight pipe body.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concealed cave pile foundation auxiliary construction device, characterized in that: include: The acid-etched pipe part (1) is a pipe body structure for rotating the outer shell of the cave, and its upper end is provided with a butt joint connector; The connecting pipe part (2) is threadedly connected to the upper end of the acid-etched pipe part (1), and both the inner and outer layer pipes are connected to the acid-etched pipe part (1); The acid-etched pipe part (1) comprises a main pipe (11), an acid liquid pipeline (112) is integrally arranged at a middle and lower position inside the main pipe (11), and the hole of the acid liquid pipeline (112) extends downward to penetrate the main pipe (11), and the pipe of the main pipe (11) is fixedly arranged in sequence and at intervals below the acid liquid pipeline (112) inside the pipe of the main pipe (11), a material discharge body of a batching bin (114), a gear box (115), a connecting plugging plate of a stirring bin (117), a water pump (14), a water pumping pipe (118) and a gas plate (119), the acid liquid pipeline (112) and the material discharge body of the batching bin (114) are blocked to form the batching bin (114), and the material discharge body of the batching bin (114) and the connecting plugging plate of the stirring bin (117) are blocked to form the stirring bin (117); An acid water pipe (12) is fixedly arranged inside the main pipe (11) above the acid liquid pipeline (112), and a liquid pump (121) is connected between the acid water pipe (12) and the four-claw pipe of the acid liquid pipeline (112) via bolts; A synchronous motor (131) is fixedly arranged above the interior of the batching bin (114), and the synchronous motor (131) is fixedly connected to a screw rod (13) arranged inside the batching bin (114). The lower end of the screw rod (13) is rotatably arranged in the central hole of the material discharge body of the batching bin (114), and the lower end of the shaft of the screw rod (13) is fixed to a bevel gear set (132) rotatably arranged inside the gear box (115). The bevel gear set (132) is composed of three bevel gears, and the shafts of the bevel gears located on both sides of the central axis are respectively connected to the central axis. A beating screw (133) is fixedly connected, and a stirring wheel (134) is arranged inside the stirring chamber (117) below the bevel gear group (132). The rotating shaft of the stirring wheel (134) is movably connected to a wind wheel (136) arranged above the air plate (119) through a universal joint (135). The rotating shaft of the wind wheel (136) is connected to a speed sensor (137) fixedly arranged in the central mounting hole of the air plate (119). The speed sensor (137) is electrically connected to the control end of the synchronous motor (131) through a line.

2. The concealed cave pile foundation auxiliary construction device according to claim 1 is characterized by: The upper end of the main pipe (11) is integrally provided with an internal thread mounting head (111) which is threadedly connected to the connecting pipe portion (2).

3. The concealed cave pile foundation auxiliary construction device according to claim 1 is characterized by: The acid liquid pipeline (112) is composed of a four-claw tube and four holes, and the four holes are respectively connected to the four claws of the four-claw tube.

4. The concealed cave pile foundation auxiliary construction device according to claim 1 is characterized by: The upper surface of the batching bin (114) is arranged to be an arc surface. The structure of the water extraction pipe (118) is the same as that of the acid liquid pipeline (112), but is not interlaced with the acid liquid pipeline (112), and a receiving pipe (1181) with one end open toward the lower end of the acid liquid pipeline (112) is fixedly arranged at the lower end. The water extraction pump (14) is connected between the connecting plug plate of the mixing bin (117) and the four-claw type tube of the water extraction pipe (118) by bolts. A through installation hole is provided at the center of the air plate (119), and a plurality of air holes which are narrow at the top and wide at the bottom are provided around the installation hole.

5. The concealed cave pile foundation auxiliary construction device according to claim 1 is characterized by: The space of the batching bin (114) is much larger than the space of the mixing bin (117); the gear box (115) is located in the upper middle position inside the mixing bin (117), and the upper surface is configured as a curved surface; an exhaust pipe (113) is provided inside the tube shell of the main tube (11) between the holes of the acid liquid pipe (112) and is open upwardly; and the lower end of the exhaust pipe (113) is connected from the position of the water pump (14) to the inside of the main tube (11).

6. The concealed cave pile foundation auxiliary construction device according to claim 1 is characterized by: The upper end of the acid water pipe (12) is integrally provided with a liquid replenishing interface (122) at a position slightly below the internal threaded mounting head (111), and a through hole is provided inside the main pipe (11) corresponding to the liquid replenishing interface (122).

7. The concealed cave pile foundation auxiliary construction device according to claim 1 is characterized by: The beating screws (133) are all rotatably connected to the inside of a beating tube (116) correspondingly opened inside the main tube (11).

8. The concealed cave pile foundation auxiliary construction device according to claim 1 is characterized by: The structure of the connecting pipe part (2) comprises a main pipe (11), an internal thread mounting head (111), a joint connected to the internal thread mounting head (111) at the opposite end of the internal thread mounting head (111), an exhaust pipe (113), an acid water pipe (12) and a liquid replenishing interface (122).

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