Safety protection device for power tube well foundation excavation

Abstract

The invention relates to the technical field of tube well excavation safety equipment, solves the problem that in the prior art, the improvement capacity for the quality of air in a tube well is limited, and discloses a safety protection device for power tube well foundation excavation. The ventilation unit comprises a shell, an air supply air duct, an air exhaust air duct and a first driving assembly; the shell comprises an air supply cavity and an air exhaust cavity; the dust removal unit comprises a precipitation bottle, an air guide cylinder, a water purification tank, a water purification cylinder, a sewage tank and a sewage cylinder; the precipitation bottle comprises an air inlet pipe orifice, a connecting pipe orifice and a round belly body; the air duct is provided with an air outlet groove; the precipitation bottle is communicated with a blow-off pipe, and the blow-off pipe is connected with a blow-off box; the shell is communicated with an air supply side pipe, an air supply middle pipe, an air exhaust side pipe and an air exhaust middle pipe; pistons are arranged on the clean water cylinder and the sewage cylinder; the water purifying cylinder is communicated with a water purifying pipe and a water pumping pipe, and the water purifying pipe is provided with nozzles; the sewage cylinder communicates with a sewage pipe and a water supply pipe. The air quality of the power tube well foundation excavation environment can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of pipe well excavation safety equipment, and in particular to a safety protection device for excavating a power pipe well foundation. Background Art

[0002] When working in confined spaces, especially during the excavation of power pipe shafts, there is a risk of oxygen deficiency due to the deep soil.

[0003] The prior art uses fans and pipelines to transport air into power pipe shafts.

[0004] However, this solution will cause dust in the power pipe shaft, which may easily cause dust poisoning to workers.

[0005] Therefore, there is an urgent need for a solution that can improve the air quality in the power pipe shaft during the excavation process of the power pipe shaft to provide safety protection for the workers. Summary of the invention

[0006] In order to remove dust or harmful gases in a power pipe shaft and supply fresh air, the present application provides a safety protection device for excavating the foundation of a power pipe shaft.

[0007] The following technical solutions are adopted: A safety protection device for excavating a power pipe well foundation, comprising a frame, a dust removal unit, and a ventilation unit arranged on the frame; the ventilation unit comprises a shell, an air supply duct, an air exhaust duct and a first drive assembly; the shell comprises an air supply cavity and an air exhaust cavity, the cross sections of the air supply cavity and the air exhaust cavity are both circular, the air supply duct is coaxially connected to the air supply cavity, and the air exhaust duct is coaxially connected to the air exhaust cavity; the first drive assembly drives the air supply duct and the air exhaust duct to rotate; the dust removal unit comprises a housing, an air supply duct, an air exhaust duct and a first drive assembly; the housing comprises an air supply cavity and an air exhaust cavity, the cross sections of the air supply cavity and the air exhaust duct ... cavity and the air exhaust duct are coaxially connected to the air exhaust cavity; the first drive assembly drives the air supply duct and the air exhaust duct to rotate; the dust removal unit comprises a housing, an air supply duct, an air exhaust duct and a first drive assembly; the housing comprises a housing, an air supply duct, an air exhaust duct and a first drive assembly; the housing comprises a housing, an air supply duct, an air exhaust duct and a first drive assembly; the housing comprises a housing, an air supply duct, an air exhaust duct and a first drive assembly; the housing comprises a housing, an air supply duct, an air exhaust duct and a first drive assembly; the housing comprises a housing, an air supply duct, an air exhaust duct and a first drive assembly; the housing comprises a housing, an air supply duct, an air exhaust duct and a first drive assembly; the housing comprises a housing, The vehicle comprises a sedimentation bottle, an air guide tube, and a clean water tank, a clean water cylinder, a sewage tank, a sewage cylinder and a second driving component arranged on the vehicle frame; the sedimentation bottle is arranged in the air guide tube, and the sedimentation bottle comprises an air inlet pipe opening, a connecting pipe opening and a round belly body, the round belly body is a spherical hollow structure, the air inlet pipe opening and the connecting pipe opening are connected to the top of the round belly body at intervals, and the air inlet pipe opening and the connecting pipe opening both pass through the air guide tube to the outside; a plurality of air outlet grooves are arranged in an array on the side wall of the air guide tube; a sewage discharge pipe is connected to the bottom of the sedimentation bottle, and the sewage discharge pipe The tube passes vertically downward through the air guide tube and can be detachably connected to the sewage box; the surface of the shell is connected with an air supply side tube, an air supply middle tube, an air extraction side tube and an air extraction middle tube; one end of the air supply side tube is connected to the air supply cavity via the side wall of the shell, and the other end is connected to the air guide tube; the air supply middle tube is coaxially connected to the air supply cavity, and the other end extends outward; one end of the air extraction side tube is connected to the air extraction cavity via the side wall of the shell, and the other end extends outward and is provided with a filter bag; one end of the air extraction middle tube is coaxially connected to the air extraction cavity, and the other end is connected to the connecting pipe port ; Pistons are slidably connected in the clean water cylinder and the sewage cylinder; a clean water pipe and a water pumping pipe are connected at the bottom of the clean water cylinder, a nozzle is provided at the end of the clean water pipe, the nozzle penetrates into the round belly body, and the water pumping pipe is connected to the clean water tank; a sewage pipe and a water supply pipe are connected at the bottom of the sewage cylinder, the end of the sewage pipe penetrates into the sewage tank, and the water supply pipe is connected to the sewage tank; one-way valves are provided on the clean water pipe, the water pumping pipe, the sewage pipe and the water supply pipe; the second driving assembly drives the two pistons to reciprocate.

[0008] By adopting the above technical scheme, the ventilation unit realizes effective air circulation through the air supply cavity and the air exhaust cavity in the shell, combined with the coaxial rotation of the air supply duct and the air exhaust duct. The first drive assembly drives the air supply duct and the air exhaust duct to rotate synchronously, which enhances the fluidity and ventilation efficiency of the air. The dust removal unit uses the spherical hollow structure of the sedimentation bottle to make the dust-containing air swirl in the sedimentation bottle. The clean water cylinder sprays clean water into the sedimentation bottle through the nozzle to help humidify and settle the dust in the air. After the air dust settles, it is sucked into the air exhaust cavity through the connecting pipe and discharged to the outside. At the same time, sewage and sediment are discharged into the sewage box through the sewage pipe, realizing the effective collection and treatment of dust. This scheme effectively improves the air quality of the excavation environment of the power pipe shaft foundation, reduces the accumulation of dust and harmful gases, provides a fresher working environment for operators, and ensures the health and safety of operators.

[0009] Optionally, the shell also includes a transmission chamber arranged between the air supply chamber and the air exhaust chamber; the first drive assembly includes a first drive member and a transmission shaft; the transmission shaft is rotatably connected to the transmission chamber, one end of the transmission shaft penetrates into the air supply chamber to connect to the air supply duct, and the other end penetrates into the air exhaust chamber to connect to the air exhaust duct; the output end of the first drive member penetrates into the transmission chamber to drive the transmission shaft to rotate.

[0010] By adopting the above technical solution, by setting a transmission cavity between the air supply cavity and the air exhaust cavity, and using the first driving member to simultaneously drive the air supply duct and the air exhaust duct to rotate through the transmission shaft, effective power transmission and synchronous operation are achieved. The efficiency and stability of power transmission are improved, the failure rate is reduced, and the operation of the entire ventilation unit is made more stable and reliable.

[0011] Optionally, a driving bevel gear is provided at the output end of the first driving member, and a driven bevel gear is provided at the middle position of the transmission shaft, and the driving bevel gear is meshed with the driven bevel gear.

[0012] By adopting the above technical solution, a driving bevel gear is arranged at the output end of the first driving member, which meshes with the driven bevel gear on the transmission shaft, thereby realizing vertical transmission of power. The bevel gear transmission has the advantages of compact structure, stable transmission ratio, strong load-bearing capacity, etc., making the transmission part of the entire ventilation unit more compact and efficient.

[0013] Optionally, the air supply duct includes a connecting disk, a support ring and a plurality of fan blades; the connecting disk is coaxial with the air supply chamber, and the transmission shaft is connected to the center of the connecting disk; a plurality of fan blades are arranged in a circumferential array along the axis of the air supply chamber, one end of the fan blade is connected to the connecting disk, and the other end is connected to the support ring; and a plurality of fan blades are arranged at an angle.

[0014] By adopting the above technical solution, the air supply duct is composed of a connection plate, a support ring and an inclined blade strip. The connection plate is driven to rotate by the transmission shaft, which in turn drives the blade strip to rotate to generate airflow. This makes the airflow of the air supply duct more uniform and powerful, and improves the ventilation efficiency. At the same time, the inclined blade strip helps to reduce airflow resistance and reduce energy consumption.

[0015] Optionally, the second drive assembly includes a driving gear, a driven gear, a crankshaft and two connecting rods; the crankshaft is rotatably connected to the frame, and the crankshaft is arranged parallel to the output shaft of the first driving member; the first driving member is coaxially connected to the driving gear, and one end of the crankshaft is coaxially connected to the driven gear, and the driving gear and the driven gear are meshed; the crankshaft includes a main shaft and two crank necks, one end of the connecting rod is rotatably connected to the corresponding crank neck, and the other end is rotatably connected to the corresponding piston.

[0016] By adopting the above technical solution, the second drive assembly transmits the power of the first drive member to the crankshaft through the meshing of the driving gear and the driven gear, and then drives the pistons in the water tank and the sewage tank to reciprocate through the connecting rod. The automatic control of the delivery of clean water and the discharge of sewage is realized, and the work efficiency and water saving effect are improved.

[0017] Optionally, the air inlet pipe opening and the connecting pipe opening are arranged in a U-shaped structure.

[0018] By adopting the above technical solution, the air inlet pipe opening and the connecting pipe opening are designed with a U-shaped structure, so that the dust-laden air passes through a curved path before entering the sedimentation bottle, which is helpful for the initial sedimentation of large particles of dust in the air.

[0019] Optionally, the safety protection device also includes a protection tube; the middle main parts of the air supply pipe, the air exhaust pipe, the clean water pipe and the sewage pipe are all radially nested in the protection tube.

[0020] By adopting the above technical solution, the protective tube radially embeds the middle main parts of the air supply pipe, air extraction pipe, water purification pipe and sewage pipe, which plays a role in protecting and fixing the pipes. It effectively prevents the damage and deformation of the pipes during the construction process, and improves the stability and durability of the entire safety protection device. At the same time, the protective tube also facilitates the maintenance and replacement of the pipes.

[0021] Optionally, both ends of the protection tube are provided with cable ties; the cable ties are provided with four through holes with the same diameter as the air supply pipe, the air extraction pipe, the clean water pipe and the sewage pipe.

[0022] By adopting the above technical solution, the through hole opened on the harness block has the same diameter as the pipe, so that the pipe can pass through smoothly and be fixed in the protective tube. At the same time, the receiving roller is rotatably connected to the frame, so that the protective tube can flexibly adjust the position and direction. The fixing effect of the pipe is enhanced, and the pipe is prevented from shaking and falling off during the construction process. At the same time, the design of the receiving roller makes the installation and removal of the protective tube more convenient and quick.

[0023] Optionally, a receiving roller is provided at the end of the frame, the receiving roller is rotatably connected to the frame, and the protective pipe is mounted on the surface of the receiving roller.

[0024] In summary, the present application includes at least one of the following beneficial effects: 1. The air in the power pipe shaft is circulated through the air supply duct and the air exhaust duct, fresh air is sent into the power pipe shaft, and dust or harmful gases are extracted out of the power pipe shaft, which effectively improves the air quality of the power pipe shaft foundation excavation environment; 2. The dust in the air is precipitated by the sedimentation bottle and the water purification cylinder, and the sewage mixed with dust is extracted by the sewage cylinder, which reduces the accumulation of dust and harmful gases, provides a fresher working environment for the operators, and ensures the health and safety of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the embodiment when placed in a power pipe well; Figure 2 It is a schematic diagram of the frame structure; Figure 3 It is a schematic diagram of the cross-sectional structure of the frame viewed from above; Figure 4 It is a schematic diagram of the structure of the exhaust duct and the supply duct; Figure 5 This is a schematic diagram of the structure of the water purification cylinder and the sewage cylinder (the arrow in the figure indicates the direction of water flow); Figure 6 It is a schematic diagram showing the cross-sectional structure of a water purification cylinder; Figure 7 It is a schematic diagram of the cross-sectional structure of the air guide tube and the sedimentation bottle.

[0026] Explanation of the reference numerals: 1. frame; 11. wheel; 12. receiving roller; 13. clean water tank; 14. sewage tank; 2. shell; 21. air supply chamber; 211. air supply side pipe; 212. air supply middle pipe; 2121. filter net; 22. air exhaust chamber; 221. air exhaust side pipe; 2211. filter bag; 222. air exhaust middle pipe; 23. transmission chamber; 3. air supply duct; 31. connecting plate; 32. supporting ring; 33. fan blade; 34. air exhaust duct; 4. first drive assembly; 41. first drive member; 411. driving bevel gear; 42. transmission shaft; 421. driven bevel gear ;5. Air guide tube;51. Air guide pipe outlet;52. Air outlet groove;6. Sedimentation bottle;61. Air inlet pipe outlet;62. Connecting pipe outlet;63. Round belly body;64. Drain pipe;65. Drain box;71. Clean water cylinder;711. Piston;712. Clean water pipe;7121. Nozzle;713. Suction pipe;714. One-way valve;72. Sewage cylinder;721. Sewage pipe;722. Water supply pipe;8. Second drive assembly;81. Driving gear;82. Crankshaft;821. Driven gear;822. Main shaft;823. Curved neck;83. Connecting rod;9. Protective tube;91. Wiring block. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 To Attachment Figure 7 This application is described in further detail.

[0028] When working in a confined space, especially during the excavation of a power pipe shaft, there is a risk of hypoxia due to the deep soil. The prior art uses a fan and a pipeline to transport air into the power pipe shaft. However, this solution will cause dust in the power pipe shaft, which may easily cause dust poisoning to the workers. Therefore, in order to improve the working environment in the power pipe shaft and provide safety protection for the workers, the present application provides a method for removing dust or harmful gases in the power pipe shaft and supplying fresh air.

[0029] Specifically, an embodiment of the present application discloses a safety protection device for excavation of a power pipe shaft foundation, including a frame 1 and a ventilation unit arranged on the frame 1.

[0030] A plurality of wheels 11 are provided at the bottom of the frame 1 to facilitate the movement of the frame 1. The wheels 11 are provided with a locking structure, which belongs to the prior art and will not be described in detail here.

[0031] Reference Figures 1 to 4The ventilation unit includes a shell 2, an air supply duct 3, an air exhaust duct 34 and a first drive assembly 4. The shell 2 is arranged on the upper surface of the frame 1 through a bracket. The shell 2 is a cylindrical barrel structure as a whole. Two partitions are coaxially arranged in the shell 2, and the partitions divide the internal space of the shell 2 into an air supply chamber 21, an air exhaust chamber 22 and a transmission chamber 23. The transmission chamber 23 is arranged between the air supply chamber 21 and the air exhaust chamber 22. The cross-sections of the air supply chamber 21 and the air exhaust chamber 22 are both circular. The air supply duct 3 is coaxially rotatably connected to the air supply chamber 21, and the air exhaust duct 34 is coaxially rotatably connected to the air exhaust chamber 22. The first drive assembly 4 includes a first driving member 41 and a transmission shaft 42. The transmission shaft 42 is coaxially rotatably connected to the transmission chamber 23, one end of the transmission shaft 42 penetrates into the air supply chamber 21 to connect with the air supply duct 3, and the other end penetrates into the air exhaust chamber 22 to connect with the air exhaust duct 34. The first driving member 41 is disposed on the vehicle frame 1 , and an output end of the first driving member 41 penetrates into the transmission cavity 23 to drive the transmission shaft 42 to rotate.

[0032] The surface of the shell 2 is connected with an air supply side pipe 211, an air supply middle pipe 212, an air extraction side pipe 221 and an air extraction middle pipe 222. One end of the air supply side pipe 211 is connected to the corresponding position of the side wall of the shell 2 and the air supply cavity 21, and is connected to the air supply cavity 21, and the other end is a free end that can be inserted into the power pipe well. One end of the air supply middle pipe 212 is coaxially connected to the side of the air supply cavity 21 away from the air extraction cavity 22, and the other end extends outward and is provided with a filter net 2121. The air supply middle pipe 212 is a hard pipe, and the air supply side pipe 211 is a bendable hose. One end of the air extraction side pipe 221 is connected to the corresponding position of the side wall of the shell 2 and the air extraction cavity 22, and is connected to the air extraction cavity 22, and the other end extends outward and is provided with a filter bag 2211. One end of the air extraction middle pipe 222 is coaxially connected to the side of the air extraction cavity 22 away from the air supply cavity 21, and the other end is a free end that can be inserted into the power pipe well. The air extraction side pipe 221 is a hard pipe, and the air extraction middle pipe 222 is a bendable soft pipe.

[0033] In the air supply structure, air is sucked into the air supply duct 3 along the axial direction of the air supply cavity 21 by the air supply middle pipe 212. The air supply duct 3 is driven by the transmission shaft 42 and the first driving member 41 to rotate at a high speed. The air supply duct 3 does work on the air, so that the air gains kinetic energy and flows at an accelerated speed along the radial direction of the air supply duct 3. The accelerated air enters the air supply cavity 21, and in the air supply cavity 21, the air flows along the inner wall of the air supply cavity 21. After passing through the air supply cavity 21, the high-pressure air is discharged from the air supply side pipe 211 to deliver fresh air to the power pipe shaft. Similarly, in the exhaust structure, the air in the power pipe shaft is mixed with dust or harmful gases. Under the action of the negative pressure generated by the rotation of the exhaust duct 34, the air is sucked into the exhaust duct 34 through the exhaust middle pipe 222, and after being pressurized, it is sent to the external environment through the exhaust side pipe 221. Since the exhaust side pipe 221 is provided with a filter bag 2211, most of the dust is intercepted in the filter bag 2211.

[0034] Furthermore, the air supply duct 3 includes a connection plate 31, a support ring 32 and a plurality of blade strips 33. The connection plate 31 is coaxial with the air supply cavity 21, and the transmission shaft 42 is connected to the center of the connection plate 31. The plurality of blade strips 33 are arranged in a circumferential array along the axis of the air supply cavity 21, and one end of the blade strip 33 is connected to the connection plate 31, and the other end is connected to the support ring 32. The plurality of blade strips 33 are all arranged obliquely.

[0035] Furthermore, the exhaust duct 34 and the supply duct 3 have the same structure, and one end of the exhaust duct 34 and the supply duct 3 provided with the connecting plate 31 are arranged facing each other.

[0036] Furthermore, the first driving member 41 is a motor, and the first driving member 41 is installed on the surface of the frame 1 through a bracket. The output end of the first driving member 41 is arranged perpendicular to the middle of the transmission shaft 42. The output end of the first driving member 41 is provided with a driving bevel gear 411, and the middle position of the transmission shaft 42 is provided with a driven bevel gear 421, and the driving bevel gear 411 is meshed with the driven bevel gear 421.

[0037] Reference Figures 2 to 7 , in order to reduce the dust entering the exhaust pipe 222, reduce the pressure of the filter bag 2211. That is, further improve the dust treatment effect. The present application is also provided with a dust removal unit. The dust removal unit includes a precipitation bottle 6 and an air guide tube 5 arranged at the end of the exhaust pipe 222, and a clean water tank 13, a clean water cylinder 71, a sewage tank 14, a sewage cylinder 72 and a second drive assembly 8 arranged on the frame 1.

[0038] Reference Figure 7 , the sedimentation bottle 6 includes an air inlet port 61, a connecting port 62 and a round belly body 63. The round belly body 63 is a spherical hollow structure, and the air inlet port 61 and the connecting port 62 are connected to the top of the round belly body 63 at intervals, and the air inlet port 61 and the connecting port 62 are arranged in a U-shaped structure. The air inlet port 61 extends away from the round belly body 63, and the air inlet port 61 is open. The air guide tube 5 is a cylindrical hollow structure, and the sedimentation bottle 6 is arranged in the air guide tube 5. The air inlet port 61 and the connecting port 62 pass through the upper end of the air guide tube 5 to the outside. The exhaust middle pipe 222 is connected to the connecting port 62. An air guide port 51 connected to the internal space is arranged at the top of the air guide tube 5. The air supply side pipe 211 is connected to the air guide port 51. A plurality of air outlet grooves 52 are arranged in an array on the side wall of the air guide tube 5. A guide vane is provided on the air outlet groove 52 , and the guide vane belongs to the prior art and will not be described in detail here.

[0039] Furthermore, the bottom of the sedimentation bottle 6 is connected with a sewage pipe 64, which passes vertically downward through the air guide tube 5 and is detachably connected to a sewage box 65. The dust condensed by the water mist in the sedimentation bottle 6 enters the sewage pipe 64 and is flushed into the sewage box 65.

[0040] Reference Figure 2 and Figure 5, the water cleaning cylinder 71 and the sewage cylinder 72 are both mounted on the surface of the frame 1 through a bracket. The water cleaning cylinder 71 and the sewage cylinder 72 are both arranged vertically. The top of the water cleaning cylinder 71 is penetrated upward to form an opening, and a piston 711 is slidably connected in the water cleaning cylinder 71. The structure of the sewage cylinder 72 is the same as that of the water cleaning cylinder 71. The second driving assembly 8 includes a driving gear 81, a driven gear 821, a crankshaft 82 and two connecting rods 83. The crankshaft 82 is rotatably connected to the surface of the frame 1 through a bracket, and the crankshaft 82 is arranged parallel to the output shaft of the first driving member 41. The first driving member 41 is coaxially connected to the driving gear 81, and one end of the crankshaft 82 is coaxially connected to the driven gear 821, and the driving gear 81 and the driven gear 821 are meshed. The crankshaft 82 includes a main shaft 822 and two crank necks 823, one end of the connecting rod 83 is rotatably connected to the corresponding crank neck 823, and the other end is rotatably connected to the corresponding piston 711. When the first driving member 41 outputs torque, the driving gear 81 cooperates with the driven gear 821 to drive the crankshaft 82 to rotate, and the crankshaft 82 and the connecting rod 83 cooperate to drive the piston 711 to move. The pistons 711 in the clean water cylinder 71 and the sewage cylinder 72 move in opposite directions. The bottom of the clean water cylinder 71 is connected with a clean water pipe 712 and a water pumping pipe 713. As the piston 711 moves, clean water is pumped into the clean water cylinder 71 from the clean water tank 13 through the water pumping pipe 713. The piston 711 moves in the opposite direction and the clean water is squeezed into the clean water pipe 712. A nozzle 7121 is provided at the end of the clean water pipe 712. The clean water pipe 712 passes through the outer wall of the air guide cylinder 5, so that the nozzle 7121 passes through the outer wall of the sedimentation bottle 6 to the sedimentation bottle 6, and the nozzle 7121 is tilted downward. Both the clean water pipe 712 and the water pumping pipe 713 are provided with a one-way valve 714. The bottom of the sewage cylinder 72 is connected with a sewage pipe 721 and a water pipe 722. The end of the sewage pipe 721 penetrates into the sewage tank 65 and is close to the bottom inner wall of the sewage tank 65. As the piston 711 moves, the sewage in the sewage tank 65 is sucked into the sewage cylinder 72 through the sewage pipe 721, and is squeezed by the piston 711 and sent into the water pipe 722, and then sent to the sewage tank 14.

[0041] Furthermore, the safety protection device also includes a protective tube 9, and the middle main parts of the air supply pipe, the exhaust pipe, the clean water pipe 712 and the sewage pipe 721 are all radially nested in the protective tube 9. The protective tube 9 includes an inner cushion layer, a metal braided layer and an outer shell layer from the inside to the outside. The inner cushion layer can be made of materials such as sponge and rubber. The metal braided layer is made of multiple strands of steel wire in a weaving manner of two strands on top and two strands on the bottom to form an interlaced mesh structure. In this weaving method, the steel wires are divided into two groups, one group is interwoven at the top, and the other group is interwoven at the bottom. Thereby enhancing the mechanical strength and tensile properties of the protective tube 9, while providing certain wear resistance, pressure resistance and corrosion resistance. The outer shell is a rubber layer covering the outside of the metal braided layer.

[0042] Furthermore, both ends of the protection tube 9 are provided with harness blocks 91. The harness blocks 91 are cylindrical blocks, which are arranged radially along the protection tube 9, and have four through holes with the same diameter as the air supply pipe, the air extraction pipe, the clean water pipe 712 and the sewage pipe 721.

[0043] Furthermore, a receiving roller 12 is provided at the end of the frame 1, and the receiving roller 12 is rotatably connected to the frame 1 through a bracket. The protection tube 9 is mounted on the surface of the receiving roller 12.

[0044] The implementation principle of a safety protection device for excavating a power pipe well foundation in the embodiment of the present application is as follows: The ventilation unit realizes effective circulation of air through the air supply chamber 21 and the air extraction chamber 22 in the housing 2, combined with the coaxial rotation of the air supply duct 3 and the air extraction duct 34. The first drive assembly 4 drives the air supply duct 3 and the air extraction duct 34 to rotate synchronously, thereby enhancing the fluidity and ventilation efficiency of the air. The dust removal unit utilizes the spherical hollow structure of the sedimentation bottle 6 to make the dust-laden air swirl in the sedimentation bottle 6. The clean water cylinder 71 sprays clean water into the sedimentation bottle 6 through the nozzle 7121 to help humidify and settle the dust in the air. After the air dust settles, it is sucked into the air extraction chamber 22 through the connecting pipe mouth 62 and discharged to the outside. At the same time, sewage and sediment are discharged into the sewage box 65 through the sewage pipe 64, thereby realizing effective collection and treatment of dust.

[0045] 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 safety protection device for excavation of power pipe well foundation, Features: It comprises a frame (1), a dust removal unit, and a ventilation unit arranged on the frame (1); The ventilation unit comprises a housing (2), an air supply cylinder (3), an air exhaust cylinder (34) and a first drive assembly (4); The shell (2) comprises an air supply cavity (21) and an air extraction cavity (22); the air supply cavity (21) and the air extraction cavity (22) are both circular in cross section; the air supply duct (3) is coaxially rotatably connected to the air supply cavity (21); and the air extraction duct (34) is coaxially rotatably connected to the air extraction cavity (22); the first driving assembly (4) drives the air supply duct (3) and the air extraction duct (34) to rotate; The dust removal unit comprises a sedimentation bottle (6), an air guide cylinder (5), and a clean water tank (13), a clean water cylinder (71), a sewage tank (14), a sewage cylinder (72), and a second drive assembly (8) arranged on the vehicle frame (1); The precipitation bottle (6) is arranged in the air guide tube (5), and the precipitation bottle (6) comprises an air inlet pipe opening (61), a connecting pipe opening (62) and a round belly body (63); the round belly body (63) is a spherical hollow structure; the air inlet pipe opening (61) and the connecting pipe opening (62) are connected to the top of the round belly body (63) at intervals, and the air inlet pipe opening (61) and the connecting pipe opening (62) both pass through the air guide tube (5) to the outside; a plurality of air outlet grooves (52) are arranged in an array on the side wall of the air guide tube (5); The bottom of the sedimentation bottle (6) is connected to a sewage discharge pipe (64), and the sewage discharge pipe (64) vertically passes through the air guide tube (5) and is detachably connected to a sewage discharge box (65); The surface of the shell (2) is connected to an air supply side tube (211), an air supply middle tube (212), an air extraction side tube (221) and an air extraction middle tube (222); one end of the air supply side tube (211) is connected to the air supply cavity (21) from the side wall of the shell (2), and the other end is connected to the air guide tube (5); the air supply middle tube (212) is coaxially connected to the air supply cavity (21), and the other end extends outward; one end of the air extraction side tube (221) is connected to the air extraction cavity (22) from the side wall of the shell (2), and the other end extends outward and is provided with a filter bag (2211); one end of the air extraction middle tube (222) is coaxially connected to the air extraction cavity (22), and the other end is connected to the connecting pipe port (62); The water cleaning cylinder (71) and the sewage cylinder (72) are both slidably connected with pistons (711); the bottom of the water cleaning cylinder (71) is connected with a water cleaning pipe (712) and a water extraction pipe (713); a nozzle (7121) is provided at the end of the water cleaning pipe (712); the nozzle (7121) penetrates into the round belly body (63); the water extraction pipe (713) is connected to the water cleaning tank (13); the bottom of the sewage cylinder (72) is connected with a sewage pipe (721) and a water supply pipe (722); the end of the sewage pipe (721) penetrates into the sewage tank (65); the water supply pipe (722) is connected to the sewage tank (14); The clean water pipe (712), the water pumping pipe (713), the sewage pipe (721) and the water supply pipe (722) are all provided with a one-way valve (714); The second driving assembly (8) drives the two pistons (711) to reciprocate.

2. A safety protection device for excavating a power pipe well foundation according to claim 1, Features: The housing (2) further comprises a transmission chamber (23) arranged between the air supply chamber (21) and the air extraction chamber (22); the first drive assembly (4) comprises a first drive member (41) and a transmission shaft (42); the transmission shaft (42) is rotatably connected to the transmission chamber (23); one end of the transmission shaft (42) penetrates into the air supply chamber (21) to be connected to the air supply duct (3), and the other end penetrates into the air extraction chamber (22) to be connected to the air extraction duct (34); the output end of the first drive member (41) penetrates into the transmission chamber (23) to drive the transmission shaft (42) to rotate.

3. A safety protection device for excavating a power pipe well foundation according to claim 2, Features: The output end of the first driving member (41) is provided with a driving bevel gear (411), and the middle portion of the transmission shaft (42) is provided with a driven bevel gear (421), and the driving bevel gear (411) is meshed with the driven bevel gear (421).

4. A safety protection device for excavating a power pipe well foundation according to claim 2, Features: The air supply duct (3) comprises a connecting disk (31), a supporting ring (32) and a plurality of blade strips (33); the connecting disk (31) is coaxial with the air supply cavity (21), and the transmission shaft (42) is connected to the center of the connecting disk (31); the plurality of blade strips (33) are arranged in a circumferential array along the axis of the air supply cavity (21), one end of the blade strip (33) is connected to the connecting disk (31), and the other end is connected to the supporting ring (32); the plurality of blade strips (33) are all arranged obliquely.

5. A safety protection device for excavating a power pipe well foundation according to claim 2, Features: The second driving assembly (8) comprises a driving gear (81), a driven gear (821), a crankshaft (82) and two connecting rods (83); the crankshaft (82) is rotatably connected to the vehicle frame (1), and the crankshaft (82) is arranged parallel to the output shaft of the first driving member (41); the first driving member (41) is coaxially connected to the driving gear (81), one end of the crankshaft (82) is coaxially connected to the driven gear (821), and the driving gear (81) and the driven gear (821) are meshed; the crankshaft (82) comprises a main shaft (822) and two crank necks (823), one end of the connecting rod (83) is rotatably connected to the corresponding crank neck (823), and the other end is rotatably connected to the corresponding piston (711).

6. A safety protection device for excavating a power pipe well foundation according to claim 1, Features: The air inlet pipe opening (61) and the connecting pipe opening (62) are arranged in a U-shaped structure.

7. A safety protection device for excavating a power pipe well foundation according to claim 1, Features: The safety protection device further comprises a protection tube (9); the middle sections of the air supply tube, the air extraction tube, the clean water tube (712) and the sewage tube (721) are all radially nested in the protection tube (9).

8. A safety protection device for excavating a power pipe well foundation according to claim 7, Features: Both ends of the protection tube (9) are provided with a cable harness block (91); the cable harness block (91) is provided with four through holes having the same diameter as the air supply pipe, the air extraction pipe, the clean water pipe (712) and the sewage pipe (721).

9. A safety protection device for excavating a power pipe well foundation according to claim 7, Features: A receiving roller (12) is provided at the end of the frame (1), the receiving roller (12) is rotatably connected to the frame (1), and the protective tube (9) is mounted on the surface of the receiving roller (12).

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