A pre-drainage protector pipe blockage cleaning device

Abstract

The application provides a pre-drainage protection pipe blockage cleaning device, and belongs to the technical field of tunnel construction equipment. The pre-drainage protection pipe blockage cleaning device comprises a cylindrical flushing cavity and an extension pipeline at the tail of the flushing cavity. A plurality of water outlets are arranged on the side wall of the flushing cavity, and a flushing pipeline is connected to each water outlet. The flushing pipeline can be flexibly deformed to change the position and direction of water flushing. The extension pipeline is hollow and connected to the flushing cavity. The extension pipeline is used for injecting water into the flushing cavity. A driving assembly is arranged at the head of the flushing cavity and can drive the flushing pipeline to reciprocating swing. The pre-drainage protection pipe blockage cleaning device can flush the inner wall of the tunnel drainage hole protection pipe and wash away the silt adhered to the protection pipe and blocking the water inlet hole of the protection pipe.

Description

[0001] This invention belongs to the technical field of tunnel construction equipment, and more specifically relates to a pre-drainage pipe blockage cleaning device. Background Technology

[0002] In some tunnel construction projects, advanced geological exploration technology is used to detect geological information ahead of the construction face. For different types of groundwater, such as pore water in loose layers and fissure water in bedrock, it is usually necessary to treat the groundwater before continuing tunnel construction. The process of treating groundwater usually involves drilling holes to drain the groundwater and then grouting to seal these seepage fissures. The drilled holes are tunnel drainage holes.

[0003] According to existing technology, after drilling the tunnel drainage hole, it is necessary to install a protective pipe inside the tunnel drainage hole. The protective pipe plays a supporting role, supporting the hole wall of the tunnel drainage hole. Multiple water inlet holes are set on the circumference of the protective pipe. Seepage water from the rock wall and fissures can flow into the protective pipe through the hole wall. This groundwater is discharged through the protective pipe. The protective pipe is a pre-drainage protective pipe.

[0004] However, some groundwater contains large amounts of sediment and other easily deposited substances, which can easily clog the protective pipe and the inlet holes on its circumference. Clogged inlet and outlet channels reduce the efficiency of groundwater drainage. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a pre-drainage pipe blockage cleaning device for flushing the inner wall of the drainage pipe in tunnel construction to prevent the drainage pipe from being blocked by mud and gravel; the pre-drainage pipe blockage cleaning device includes a cylindrical flushing chamber and an extension pipe at the tail of the flushing chamber; multiple water outlets are provided on the side wall of the flushing chamber, and each water outlet is connected to a flushing pipe, which can be flexibly deformed to change the position and direction of the water flushing. The extension pipe is hollow inside and connected to the flushing chamber. The extension pipe is used to inject water into the flushing chamber. The head of the flushing chamber is equipped with a drive assembly that can drive the flushing pipe to swing back and forth. The drive assembly includes a drive chamber connected to the flushing chamber, a piston disposed inside the drive chamber, a clamping assembly connected to the flushing pipe, a transmission mechanism connecting the piston and the clamping assembly, and a drain assembly connected to the transmission mechanism. The flushing chamber injects water into the drive chamber, which drives the flushing pipe to swing through the piston, the transmission mechanism, and the clamping assembly. The drain assembly is used to drain the water in the drive chamber and finally reset the flushing pipe.

[0006] Preferably, the flushing pipe includes a proximal pipe, a flexible pipe, and a distal pipe connected in sequence. The proximal pipe is connected to the water outlet, and the flexible pipe is made of a flexible material and can be bent and deformed. Water in the flushing chamber can enter the proximal pipe through the water outlet, pass through the flexible pipe, and finally spray out from the distal pipe.

[0007] Preferably, the clamping assembly includes a clamping base plate, a clamping cover plate, and a clamping ball sleeved on the outside of the distal pipe; the multiple water outlets on the flushing chamber are linearly distributed along the axial direction of the flushing chamber. Both the clamping base plate and the clamping cover plate are provided with clamping grooves, and the clamping grooves are provided with multiple hemispherical grooves. Each hemispherical groove matches the position of the water outlet on the flushing chamber. The clamping ball can be placed between the hemispherical grooves of the clamping base plate and the clamping cover plate. The hemispherical grooves are used to restrict the clamping ball to rotate but not move. The clamping ball is used to connect to the flushing pipe and drive the flushing pipe to swing. The clamping base plate and the clamping cover plate are detachably connected by fasteners. The clamping base plate and the clamping cover plate are connected to the transmission mechanism, which can drive the clamping base plate and the clamping cover plate to reciprocate along the axis of the flushing chamber.

[0008] Preferably, the driving cavity is a hollow cylindrical shell, the piston is disposed inside the driving cavity, the end of the driving cavity near the flushing cavity is the proximal end, and the other end is the distal end; an elastic element is provided between the distal end of the driving cavity and the piston, the elastic element can push the piston to move towards the proximal end of the driving cavity, and the transmission mechanism is connected to the piston. A drain hole is provided on the side wall near the proximal end of the drive chamber. A drain assembly is sleeved on the outside of the drive chamber and can block the drain hole. When the drain assembly blocks the drain hole, water in the flushing chamber flows into the drive chamber, which can push the piston to move to the far end of the drive chamber and compress the elastic element. The transmission mechanism drives the drain assembly to not block the drain hole, and the elastic element pushes the piston to move towards the proximal end of the drive chamber. Water in the drive chamber is discharged from the drain hole, and the transmission mechanism drives the drain assembly to block the drain hole. The flushing pipe swings back and forth in this way.

[0009] Preferably, the transmission mechanism includes a drive ring sleeved on the outside of the drive cavity and a connecting frame connecting the drive ring and the piston; when the piston moves along the axis of the drive cavity, the connecting frame can drive the drive ring to move synchronously. There is a driving gap between the driving ring and the outer wall of the driving cavity on the side near the proximal end of the driving cavity; the drainage assembly includes a transmission ring, which is disposed in the driving gap; a lower protrusion is provided on the side of the driving ring near the proximal end of the driving cavity, and an upper protrusion is provided on the side of the transmission ring near the distal end of the driving cavity, with an asynchronous gap between the upper protrusion and the lower protrusion. A sealing plug is provided on the inner side of the transmission ring near the proximal end of the drive cavity. The sealing plug is used to block the drain hole. When the piston moves from the proximal end to the distal end of the drive cavity, the lower protrusion moves towards the upper protrusion, the asynchronous gap decreases, and the distance between the end of the transmission ring and the drive ring increases. After the lower protrusion contacts the upper protrusion, the transmission ring moves with the drive ring to disengage the sealing plug from the drain hole. When the piston moves from the proximal end to the distal end of the drive cavity, the distance between the end of the transmission ring and the drive ring decreases, and the asynchronous gap increases. After the end of the transmission ring contacts the drive ring, the transmission ring moves with the drive ring to block the drain hole.

[0010] Preferably, the lower protrusion on the drive ring is annular, and the lower protrusion is connected to the drive ring by a thread. Rotating the lower protrusion can adjust the relative position between the lower protrusion and the drive ring, thereby adjusting the size of the asynchronous gap.

[0011] Preferably, an adjustment hole is provided on the outer side of the lower protrusion. The adjustment hole is a blind hole, which facilitates the rotation of the lower protrusion.

[0012] Preferably, the drive cavity has multiple drainage holes in the circumferential direction near its proximal end, and the sealing plug can seal multiple drainage holes simultaneously.

[0013] Preferably, an adjusting ring is sleeved on the outer side of the drive ring, and the adjusting ring is provided with a waist-shaped hole, the length direction of which is parallel to the axis of the drive cavity; the adjusting ring is connected to the drive ring by a fastener, the fastener passing through the waist-shaped hole; the waist-shaped hole and the fastener are used to adjust the relative position between the drive ring and the adjusting ring; the clamping assembly is connected to the adjusting ring. Loosening the fasteners connecting the adjusting ring and the drive ring allows the position of the adjusting ring to be adjusted, thereby adjusting the initial angle of the flushing pipe swing. Tightening the fasteners connecting the adjusting ring and the drive ring fixes the relative position between the adjusting ring and the drive ring.

[0014] Preferably, the elastic element is a compression spring; an adjusting body is provided at the distal end of the driving cavity, the adjusting body is connected to the driving cavity by a thread, and the compression spring is disposed between the adjusting body and the piston; rotating the adjusting body can adjust the preload of the compression spring; A seal is provided between the piston and the inner wall of the drive chamber to increase airtightness; the piston passes through the adjusting body and a seal is provided at the connection between the piston and the adjusting body.

[0015] Preferably, the end of the extension pipe away from the flushing chamber is provided with an external thread, which is used to connect an extension pipe that can lengthen the extension pipe; The outer wall of the flushing chamber is provided with multiple wing plates, the length direction of which is parallel to the axis of the flushing chamber. The flushing pipe is located between the wing plates and the adjacent wing plates. The height of the wing plates is greater than the height of the flushing pipe.

[0016] According to an embodiment of the present invention, a pre-drainage pipe blockage cleaning device is capable of flushing the inner wall of the tunnel drainage hole pipe and washing away the mud and sand adhering to the inside of the pipe and blocking the water inlet of the pipe. Attached Figure Description

[0017] This disclosure includes accompanying drawings, which are to be considered included in and form part of the specification, and together with the specification illustrate various exemplary embodiments, features, and aspects of the disclosure and serve to explain the principles of the disclosure. The invention will be more fully understood from the following detailed description taken in conjunction with the accompanying drawings. Wherein: Figure 1 This is a schematic diagram of a pre-drainage pipe blockage cleaning device according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of a pre-drainage pipe blockage cleaning device according to an embodiment of the present invention; Figure 3 This is a partially enlarged view of the flushing pipe of a pre-drainage pipe protection blockage cleaning device according to an embodiment of the present invention; Figure 4 This is an internal schematic diagram of a pre-drainage pipe blockage cleaning device according to an embodiment of the present invention; Figure 5 yes Figure 4 A magnified view of a section at point A in the middle; Figure 6 yes Figure 4 A magnified view of a section at point B in the middle; The components include: flushing chamber 10, extension pipe 11, water outlet 12, drive chamber 20, proximal pipe 30, flexible pipe 31, distal pipe 32, clamping seat plate 40, clamping cover plate 41, clamping ball 42, piston body 50, piston rod 51, elastic element 52, drain hole 53, drive ring 60, connecting frame 61, transmission ring 62, sealing plug 63, step 64, asynchronous gap 65, adjusting ring 70, adjusting body 71, air hole 72, sealing strip 73, and wing plate 74. Detailed Implementation

[0018] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0019] In some tunnel construction projects, advanced geological exploration technology is used to detect geological information ahead of the construction face. For different types of groundwater, such as pore water in loose layers and fissure water in bedrock, it is usually necessary to treat the groundwater before continuing tunnel construction. The process of treating groundwater usually involves drilling holes to drain the groundwater and then grouting to seal these seepage fissures. The drilled holes are tunnel drainage holes 53.

[0020] According to existing technology, after drilling the tunnel drainage hole 53, a protective pipe needs to be installed inside the tunnel drainage hole 53. The protective pipe plays a supporting role, supporting the hole wall of the tunnel drainage hole 53. Multiple water inlet holes are provided on the circumference of the protective pipe. Seepage water from the rock wall and fissures can flow into the protective pipe through the hole wall. This groundwater is discharged through the protective pipe. The protective pipe is a pre-drainage protective pipe.

[0021] However, some groundwater contains large amounts of sediment and other easily deposited substances, which can easily clog the protective pipe and the inlet holes on its circumference. Clogged inlet and outlet channels reduce the efficiency of groundwater drainage.

[0022] To address the aforementioned problems, the present invention aims to provide a pre-drainage pipe blockage cleaning device for flushing the inner wall of a tunnel construction drainage pipe to prevent the drainage pipe from being blocked by mud and gravel. The pre-drainage pipe blockage cleaning device includes a cylindrical flushing chamber 10 and an extension pipe 11 at the tail of the flushing chamber 10. Multiple water outlets 12 are provided on the side wall of the flushing chamber 10, and each water outlet 12 is connected to a flushing pipe. The flushing pipe can be flexibly deformed to change the position and direction of the water flushing. The extension pipe 11 is hollow inside and connected to the flushing chamber 10. The extension pipe 11 is used to inject water into the flushing chamber 10. The head of the flushing chamber 10 is provided with a drive assembly that can drive the flushing pipe to swing back and forth. The drive assembly includes a drive chamber 20 connected to the flushing chamber 10, a piston disposed inside the drive chamber 20, a clamping assembly connected to the flushing pipe, a transmission mechanism connecting the piston and the clamping assembly, and a drain assembly connected to the transmission mechanism. The flushing chamber 10 injects water into the drive chamber 20, which can drive the flushing pipe to swing through the piston, the transmission mechanism, and the clamping assembly. The drain assembly is used to drain the water in the drive chamber 20 and finally reset the flushing pipe.

[0023] In this embodiment, as Figure 1 , Figure 2 As shown, the flushing chamber 10 is a hollow cylinder with multiple water outlet holes 12 on its circumferential surface. An extension pipe 11 is connected to the flushing chamber 10. The extension pipe 11 is used to extend the flushing chamber 10 into the interior of the protective pipe from its port. The extension pipe 11 serves to extend the flushing chamber 10 into the interior of the protective pipe and move it inside the protective pipe to flush the inner wall of the protective pipe.

[0024] The end of the extension pipe 11 away from the flushing chamber 10 can be connected to a water pump and a water source. Water is input into the flushing chamber 10 through the extension pipe 11, and the water in the flushing chamber 10 is sprayed out through the water outlet 12.

[0025] The flushing pipe is connected to the outside of the water outlet 12. The flushing pipe is flexible and deformable, which allows for adjustment of the water outlet direction. When the water outlet direction is parallel to the radial direction of the protective pipe, a greater impact force can be obtained, which is suitable for deposits firmly attached to the inner wall of the protective pipe. The water outlet direction can also be tilted towards the water outlet of the protective pipe, and the deposits that are washed off will flow backward, preventing secondary blockage.

[0026] The drive assembly is used to drive the flushing pipe to swing repeatedly in one direction. While the flushing chamber 10 moves inside the protective tube, the flushing pipe swings. The dynamic cleaning process can improve the flushing effect of the deposits and also make the deposits that have been flushed off flow backward to prevent secondary blockage.

[0027] Specifically, the drive chamber 20 is connected to the flushing chamber 10. Water inside the flushing chamber 10 can flow into the drive chamber 20, pushing the piston and transmission structure to move. Ultimately, the clamping assembly pushes the flushing pipe to move. When the piston resets, the drain assembly opens the drain hole 53 on the drive chamber 20, allowing the piston to reset. Simultaneously, the transmission structure drives the clamping assembly to move in the opposite direction. This achieves the reciprocating oscillation of the flushing pipe.

[0028] Furthermore, the flushing pipe includes a proximal pipe 30, a flexible pipe 31, and a distal pipe 32 connected in sequence. The proximal pipe 30 is connected to the water outlet 12. The flexible pipe 31 is made of a flexible material and can be bent and deformed. Water in the flushing chamber 10 can enter the proximal pipe 30 through the water outlet 12, and after passing through the flexible pipe 31, it is finally sprayed out from the distal pipe 32.

[0029] In this embodiment, as Figure 3 As shown, the proximal conduit 30 and the distal conduit 32 can be made of rigid materials, such as hard plastic or metal; the flexible conduit 31 is made of a flexible material, such as rubber or silicone. The proximal conduit 30 is connected to the flushing chamber 10, and the distal conduit 32 is connected to the clamping assembly. When the clamping assembly moves, the flexible conduit 31 undergoes flexible deformation to follow the movement of the clamping assembly.

[0030] Furthermore, the clamping assembly includes a clamping base plate 40, a clamping cover plate 41, and a clamping ball 42 sleeved on the outside of the distal pipe 32; the plurality of water outlet holes 12 on the flushing chamber 10 are linearly distributed along the axial direction of the flushing chamber 10. Both the clamping base plate 40 and the clamping cover plate 41 are provided with clamping grooves, and multiple hemispherical grooves are provided on the clamping grooves. Each hemispherical groove matches the position of the water outlet 12 on the flushing chamber 10. The clamping ball 42 can be placed between the hemispherical groove of the clamping base plate 40 and the hemispherical groove of the clamping cover plate 41. The hemispherical groove is used to restrict the clamping ball 42 to only rotate and not move. The clamping ball 42 is used to connect to the flushing pipe and drive the flushing pipe to swing. The clamping base plate 40 and the clamping cover plate 41 are detachably connected by fasteners. The clamping base plate 40 and the clamping cover plate 41 are connected to the transmission mechanism, which can drive the clamping base plate 40 and the clamping cover plate 41 to reciprocate along the axial direction of the flushing chamber 10.

[0031] In this embodiment, as Figure 1 , Figure 2 as well as Figure 3 As shown, the clamping base plate 40 and the clamping cover plate 41 are elongated. The water outlet holes 12 on the circumferential surface of the rinsing chamber 10 and the rinsing pipes provided on the water outlet holes 12 are arranged in an array, including multiple sets. Each set of water outlet holes 12 and rinsing pipes is arranged along the direction of the axis of the rinsing chamber 10, and the multiple sets of water outlet holes 12 and rinsing pipes are set at different angles on the rinsing chamber 10.

[0032] Each set of water outlets 12 and flushing pipes is equipped with a clamping seat plate 40 and a clamping cover plate 41, which are respectively connected to the transmission assembly.

[0033] The clamping ball 42 is sleeved on the distal pipe 32. The clamping seat plate 40 is located near the flushing chamber 10. The clamping seat plate 40 has an upward-opening hemispherical clamping groove above it and a downward-opening hemispherical clamping groove below the clamping cover plate 41. When the clamping seat plate 40 and the clamping cover plate 41 are closed, the clamping ball 42 can be fixed in the clamping groove.

[0034] The clamping seat plate 40 is provided with a sliding groove along its length. The clamping groove is provided on the sliding groove, which allows the clamping seat plate 40 to slide from one end of the flushing chamber 10 to the other end. The distal pipe 32 is located in the sliding groove.

[0035] The clamping cover plate 41 and the clamping seat plate 40 are detachably connected by fasteners. The fasteners make the clamping cover plate 41 and the clamping seat plate 40 fit tightly together. The hemispherical groove is used to restrict the clamping ball 42 to only rotate and not move. The clamping ball 42 is used to connect to the flushing pipe and drive the flushing pipe to swing.

[0036] In this embodiment, the clamping base plate 40 is connected to the transmission assembly, which can drive all the clamping base plates 40 to move synchronously.

[0037] Furthermore, the driving cavity 20 is a hollow cylindrical shell, and the piston is disposed inside the driving cavity 20. The end of the driving cavity 20 near the flushing cavity 10 is the proximal end, and the other end is the distal end. An elastic element 52 is provided between the distal end of the driving cavity 20 and the piston. The elastic element 52 can push the piston to move towards the proximal end of the driving cavity 20. The transmission mechanism is connected to the piston. A drain hole 53 is provided on the side wall near the proximal end of the drive cavity 20. A drain assembly is sleeved on the outside of the drive cavity 20 and can block the drain hole 53. When the drain assembly blocks the drain hole 53, the water in the flushing cavity 10 flows into the drive cavity 20, which can push the piston to move to the far end of the drive cavity 20 and compress the elastic element 52. The transmission mechanism drives the drain assembly not to block the drain hole 53, and the elastic element 52 pushes the piston to move towards the proximal end of the drive cavity 20. The water in the drive cavity 20 is discharged from the drain hole 53, and the transmission mechanism drives the drain assembly to block the drain hole 53. The flushing pipe swings back and forth in this way.

[0038] In this embodiment, as Figure 3 , Figure 4 as well as Figure 5 As shown, the piston includes a piston body 50 and a piston rod 51. The piston body 50 is in the drive chamber 20. The hydraulic pressure in the drive chamber 20 can push the piston body 50 to move. The piston rod 51 passes through the drive chamber 20 and is connected to the piston body 50 to transmit the movement of the piston body 50 to the outside of the drive chamber 20.

[0039] The elastic element 52 is a compression spring, which is sleeved on the piston rod 51 and disposed between the piston body 50 and the end of the drive cavity 20. The elastic element 52 can push the piston to move towards the proximal end of the drive cavity 20. The transmission mechanism is connected to the piston rod 51.

[0040] A drain hole 53 is provided on the side wall near the proximal end of the drive cavity 20. A drain assembly is sleeved on the outside of the drive cavity 20. The drain assembly can block and close the drain hole 53 or open the drain hole 53.

[0041] Furthermore, the transmission mechanism includes a drive ring 60 sleeved on the outside of the drive cavity 20 and a connecting frame 61 connecting the drive ring 60 and the piston; when the piston moves along the axis of the drive cavity 20, the connecting frame 61 can drive the drive ring 60 to move synchronously. The drive ring 60 has a drive gap between the side of the drive ring 60 near the proximal end of the drive cavity 20 and the outer wall of the drive cavity 20; the drainage assembly includes a transmission ring 62, which is disposed in the drive gap; the drive ring 60 has a lower protrusion on the side of the drive ring 60 near the proximal end of the drive cavity 20, and the transmission ring 62 has an upper protrusion on the side of the drive ring 62 near the distal end of the drive cavity 20, with an asynchronous gap 65 between the upper protrusion and the lower protrusion; A sealing plug 63 is provided on the inner side of the transmission ring 62 near the proximal end of the drive cavity 20. The sealing plug 63 is used to block the drain hole 53. When the piston moves from the proximal end to the distal end of the drive cavity 20, the lower protrusion moves towards the upper protrusion, the asynchronous gap 65 decreases, and the distance between the end of the transmission ring 62 and the drive ring 60 increases. After the lower protrusion contacts the upper protrusion, the transmission ring 62 moves with the drive ring 60 to disengage the sealing plug 63 from the drain hole 53. When the piston moves from the proximal end to the distal end of the drive cavity 20, the distance between the end of the transmission ring 62 and the drive ring 60 decreases, and the asynchronous gap 65 increases. After the end of the transmission ring 62 contacts the drive ring 60, the transmission ring 62 moves with the drive ring 60 to block the drain hole 53.

[0042] In this embodiment, as Figure 4 As shown, the connecting frame 61 is cross-shaped and connected to the drive ring 60 at multiple angles, so that the thrust of the piston rod 51 is evenly transmitted to the drive ring 60, which is annular.

[0043] The drive clearance is formed by a step 64 on the inner wall of the drive ring 60. The inner diameters on both sides of the step 64 are different. The part with the smaller inner diameter is close to the far end of the drive cavity 20 and contacts the outer wall of the drive cavity 20. The gap between the part with the larger inner diameter and the outer wall of the drive cavity 20 is the drive clearance.

[0044] The transmission ring 62 is disposed in the drive gap. The drive ring 60 has a lower protrusion on the side near the proximal end of the drive cavity 20, and the transmission ring 62 has an upper protrusion on the side near the distal end of the drive cavity 20. There is an asynchronous gap 65 between the upper and lower protrusions. The purpose of the asynchronous gap 65 is to make the piston and the transmission ring 62 move asynchronously. When the piston moves from the proximal end to the distal end of the drive cavity 20, the lower protrusion moves towards the upper protrusion, the asynchronous gap 65 decreases, and the distance between the end of the transmission ring 62 and the drive ring 60 increases. After the lower protrusion contacts the upper protrusion, the transmission ring 62 moves with the drive ring 60 to make the sealing plug 63 disengage from the drain hole 53.

[0045] When the piston moves from the proximal end to the distal end of the drive chamber 20, the distance between the end of the transmission ring 62 and the drive ring 60 decreases while the asynchronous gap 65 increases. After the end of the transmission ring 62 contacts the drive ring 60, the transmission ring 62 moves with the drive ring 60 to block the drain hole 53 with the sealing plug 63.

[0046] Furthermore, the lower protrusion on the drive ring 60 is annular, and the lower protrusion is connected to the drive ring 60 by a thread. Rotating the lower protrusion can adjust the relative position between the lower protrusion and the drive ring 60, thereby adjusting the size of the asynchronous gap 65.

[0047] In this embodiment, the lower protrusion is connected to the drive ring 60 by a thread. Rotating the lower protrusion can adjust the relative position between the lower protrusion and the drive ring 60. The distance between the lower protrusion and the upper protrusion can be adjusted by rotating the lower protrusion, thereby adjusting the size of the asynchronous gap 65.

[0048] Adjusting the size of the asynchronous gap 65 can control the time when the drain hole 53 is opened and closed, thereby controlling the angle of the flushing pipe swing.

[0049] Furthermore, the drive cavity 20 is provided with a plurality of drainage holes 53 in the circumferential direction near its proximal end, and the sealing plug 63 can simultaneously seal the plurality of drainage holes 53.

[0050] In this embodiment, a plurality of drainage holes 53 are provided on the outer side of the drive cavity 20, and a drainage component is provided on the outer side of each drainage hole 53. The transmission ring 62 is connected to the plurality of drainage components, and the transmission ring 62 can control the operation of the plurality of drainage components simultaneously, thereby improving drainage efficiency.

[0051] Furthermore, an adjusting ring 70 is sleeved on the outer side of the drive ring 60. The adjusting ring 70 is provided with an oblong hole, the length direction of which is parallel to the axis of the drive cavity 20. The adjusting ring 70 is connected to the drive ring 60 by a fastener, which passes through the oblong hole. The oblong hole and the fastener are used to adjust the relative position between the drive ring 60 and the adjusting ring 70. The clamping assembly is connected to the adjusting ring 70. Loosening the fasteners connecting the adjusting ring 70 and the drive ring 60 allows the position of the adjusting ring 70 to be adjusted, thereby adjusting the initial angle of the flushing pipe swing. Tightening the fasteners connecting the adjusting ring 70 and the drive ring 60 fixes the relative position between the adjusting ring 70 and the drive ring 60.

[0052] In this embodiment, the initial angle of the oscillation of the flushing pipe refers to the fact that when the flushing pipe begins to oscillate, it can be parallel to the radial direction of the protective pipe or inclined towards the port of the protective pipe.

[0053] The adjusting ring 70 is provided with a waist-shaped through hole, and the corresponding position of the adjusting ring 70 is provided with an internal thread hole. The fastener can be a matching bolt. The clamping seat plate 40 is connected to the adjusting ring 70. Adjusting the relative position of the adjusting ring 70 and the drive ring 60 can adjust the relative position of the clamping seat plate 40 and the flushing chamber 10, which is the initial angle of the flushing pipe.

[0054] Furthermore, the elastic element 52 is a compression spring; an adjusting body 71 is provided at the distal end of the driving cavity 20, and the adjusting body 71 is connected to the driving cavity 20 by a thread, and the compression spring is disposed between the adjusting body 71 and the piston; rotating the adjusting body 71 can adjust the preload of the compression spring. A sealing element is provided between the piston and the inner wall of the drive chamber 20 to increase airtightness; the piston passes through the adjusting body 71 and a sealing element is provided at the connection between the piston and the adjusting body 71.

[0055] In this embodiment, as Figure 4 As shown, the adjusting body 71 is threadedly connected to the distal end of the drive cavity 20. One end of the compression spring contacts the adjusting body 71. Rotating the adjusting body 71 allows it to move along the axis of the drive cavity 20, thereby adjusting the preload of the compression spring. In practice, the preload of the compression spring can be adjusted by changing the water pressure introduced into the flushing cavity 10.

[0056] Preferably, the adjusting body 71 is provided with an external hexagonal connector at the end outside the drive cavity 20, which can be used to rotate the adjusting body 71 by means of a hexagonal wrench.

[0057] Furthermore, the end of the extension pipe 11 away from the flushing chamber 10 is provided with an external thread, which is used to connect an extension pipe that can extend the extension pipe. The outer wall of the flushing chamber 10 is provided with multiple wing plates 74. The length direction of the wing plate 74 is parallel to the axis of the flushing chamber 10. The flushing pipe is arranged between the wing plate 74 and the adjacent wing plate 74. The height of the wing plate 74 is greater than the height of the flushing pipe.

[0058] In this embodiment, an extension tube of suitable length can be selected according to the depth of the flushing chamber 10 extending into the protective tube. The tail of the extension tube is also provided with an external thread, and multiple extension tubes can be spliced ​​together.

[0059] The wing plate 74 is used to support the flushing chamber 10 inside the liner and to maintain a distance between the flushing pipe and the inner wall of the liner.

[0060] In some embodiments, such as Figure 5 As shown, the regulating body 71 is provided with an air hole 72 that penetrates the regulating body 71. The air hole 72 is used to balance the air pressure when the piston moves.

[0061] In some embodiments, such as Figure 6 As shown, the sealing plug 63 is a sealing element embedded in the transmission ring 62, which can be a rubber plug or other sealing element with airtightness.

[0062] A sealing strip 73 can be provided on the side of the piston body 50. The sealing strip 73 is used to improve the airtightness of both sides of the piston body 50.

[0063] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, and the scope of the present invention is not limited to the embodiments described above. Many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. That is, those skilled in the art can make various changes and improvements to the present invention in form and detail, and all of these are considered to fall within the protection scope of the present invention. The terminology used herein is chosen to best explain the principles, practical applications, or improvements to the technology in the market of the various embodiments, or to enable those skilled in the art to understand the embodiments disclosed herein.

Claims

1. A pre-drainage pipe blockage cleaning device, used to flush the inner wall of the drainage pipe during tunnel construction to prevent the drainage pipe from being blocked by mud and gravel; characterized in that: The pre-drainage pipe blockage cleaning device includes a cylindrical flushing chamber (10) and an extension pipe (11) at the tail of the flushing chamber (10); the side wall of the flushing chamber (10) is provided with multiple water outlets (12), and each water outlet (12) is connected to a flushing pipe (30, 31, 32). The flushing pipes (30, 31, 32) can be flexibly deformed to change the position and direction of the water flushing. The extension pipe (11) is hollow inside and connected to the flushing chamber (10). The extension pipe (11) is used to inject water into the flushing chamber (10). The head of the flushing chamber (10) is provided with a drive assembly that can drive the flushing pipes (30, 31, 32) to swing back and forth. The drive assembly includes a drive chamber (20) connected to the flushing chamber (10), a piston (50, 51) disposed inside the drive chamber (20), a clamping assembly connected to the flushing pipes (30, 31, 32), a transmission mechanism connecting the piston (50, 51) and the clamping assembly, and a drain assembly connected to the transmission mechanism. The flushing chamber (10) injects water into the drive chamber (20), which can drive the flushing pipes (30, 31, 32) to swing through the piston (50, 51), the transmission mechanism, and the clamping assembly. The drain assembly is used to drain the water in the drive chamber (20) and finally reset the flushing pipes (30, 31, 32). The drive cavity (20) is a hollow cylindrical shell. The pistons (50, 51) are located inside the drive cavity (20). The end of the drive cavity (20) near the flushing cavity (10) is the proximal end, and the other end is the distal end. An elastic element (52) is provided between the distal end of the drive cavity (20) and the pistons (50, 51). The elastic element (52) can push the pistons (50, 51) to move towards the proximal end of the drive cavity (20). The transmission mechanism is connected to the pistons (50, 51). A drain hole (53) is provided on the side wall of the proximal end of the drive cavity (20). The drain assembly is sleeved on the outside of the drive cavity (20) and can block the drain hole (53). When the drain assembly blocks the drain hole (53), the water in the flushing cavity (10) flows into the drive cavity (20) and pushes the piston (50, 51) to move to the far end of the drive cavity (20) and the elastic element (52) is compressed. The transmission mechanism drives the drain assembly not to block the drain hole (53), and the elastic element (52) pushes the piston (50, 51) to move towards the proximal end of the drive cavity (20). The water in the drive cavity (20) is discharged from the drain hole (53) and the transmission mechanism drives the drain assembly to block the drain hole (53). The flushing pipes (30, 31, 32) swing back and forth in this way.

2. The pre-drainage pipe blockage cleaning device according to claim 1, characterized in that: The flushing pipes (30, 31, 32) include a proximal pipe (30), a flexible pipe (31) and a distal pipe (32) connected in sequence. The proximal pipe (30) is connected to the water outlet (12). The flexible pipe (31) is made of flexible material and can be bent and deformed. Water in the flushing chamber (10) can enter the proximal pipe (30) through the water outlet (12), and after passing through the flexible pipe (31), it is finally sprayed out from the distal pipe (32).

3. The pre-drainage pipe blockage cleaning device according to claim 2, characterized in that: The clamping assembly includes a clamping base plate (40) and a clamping cover plate (41) and a clamping ball (42) sleeved on the outside of the distal pipe (32); multiple water outlet holes (12) on the flushing chamber (10) are linearly distributed along the axial direction of the flushing chamber (10); Both the clamping base plate (40) and the clamping cover plate (41) are provided with clamping grooves, and multiple hemispherical grooves are provided on the clamping grooves. Each hemispherical groove is matched with the position of the water outlet (12) on the flushing chamber (10). The clamping ball (42) can be placed between the hemispherical groove of the clamping base plate (40) and the hemispherical groove of the clamping cover plate (41). The hemispherical groove is used to restrict the clamping ball (42) to only rotate and not move. The clamping ball (42) is used to connect with the flushing pipes (30, 31, 32) and drive the flushing pipes (30, 31, 32) to swing. The clamping base plate (40) and the clamping cover plate (41) are detachably connected by fasteners. The clamping base plate (40) and the clamping cover plate (41) are connected to the transmission mechanism, and the transmission mechanism can drive the clamping base plate (40) and the clamping cover plate (41) to reciprocate along the axial direction of the flushing chamber (10).

4. The pre-drainage pipe blockage cleaning device according to claim 1, characterized in that: The transmission mechanism includes a drive ring (60) sleeved on the outside of the drive cavity (20) and a connecting frame (61) connecting the drive ring (60) and the pistons (50, 51); when the pistons (50, 51) move along the axis of the drive cavity (20), the connecting frame (61) can drive the drive ring (60) to move synchronously. The drive ring (60) has a drive gap between the side of the drive ring (60) near the proximal end of the drive cavity (20) and the outer wall of the drive cavity (20); the drainage assembly includes a transmission ring (62), which is disposed in the drive gap; the drive ring (60) has a lower protrusion on the side of the drive ring (60) near the proximal end of the drive cavity (20), and the transmission ring (62) has an upper protrusion on the side of the drive ring (62) near the distal end of the drive cavity (20), and there is an asynchronous gap (65) between the upper protrusion and the lower protrusion. A sealing plug (63) is provided on the inner side of the transmission ring (62) near the proximal end of the drive cavity (20). The sealing plug (63) is used to block the drain hole (53). When the piston (50, 51) moves from the proximal end to the distal end of the drive cavity (20), the lower protrusion moves towards the upper protrusion, the asynchronous gap (65) decreases, and the distance between the end of the transmission ring (62) and the drive ring (60) increases. After the lower protrusion contacts the upper protrusion, the transmission ring (62) moves with the drive ring (60) to make the sealing plug (63) disengage from the drain hole (53). When the piston (50, 51) moves from the proximal end to the distal end of the drive cavity (20), the distance between the end of the transmission ring (62) and the drive ring (60) decreases, and the asynchronous gap (65) increases. After the end of the transmission ring (62) contacts the drive ring (60), the transmission ring (62) moves with the drive ring (60) to make the sealing plug (63) block the drain hole (53).

5. The pre-drainage pipe blockage cleaning device according to claim 4, characterized in that: The lower protrusion on the drive ring (60) is annular. The lower protrusion is connected to the drive ring (60) by a thread. Rotating the lower protrusion can adjust the relative position between the lower protrusion and the drive ring (60), thereby adjusting the size of the asynchronous gap (65).

6. The pre-drainage pipe blockage cleaning device according to claim 5, characterized in that: The drive cavity (20) has multiple drainage holes (53) arranged in the circumferential direction near its end, and the sealing plug (63) can seal multiple drainage holes (53) at the same time.

7. The pre-drainage pipe blockage cleaning device according to claim 5, characterized in that: An adjusting ring (70) is sleeved on the outside of the drive ring (60). The adjusting ring (70) has a waist-shaped hole, the length direction of which is parallel to the axis of the drive cavity (20). The adjusting ring (70) is connected to the drive ring (60) by a fastener, which passes through the waist-shaped hole. The waist-shaped hole and the fastener are used to adjust the relative position between the drive ring (60) and the adjusting ring (70). The clamping assembly is connected to the adjusting ring (70). Loosening the fasteners connecting the adjusting ring (70) and the drive ring (60) allows the position of the adjusting ring (70) to be adjusted, thereby adjusting the initial angle of the swing of the flushing pipes (30, 31, 32). Tightening the fasteners connecting the adjusting ring (70) and the drive ring (60) fixes the relative position between the adjusting ring (70) and the drive ring (60).

8. The pre-drainage pipe blockage cleaning device according to claim 4, characterized in that: The elastic element (52) is a compression spring; an adjusting body (71) is provided at the far end of the driving cavity (20), and the adjusting body (71) is connected to the driving cavity (20) by a thread. The compression spring is located between the adjusting body (71) and the piston (50, 51); rotating the adjusting body (71) can adjust the preload of the compression spring. A sealing element (73) to increase airtightness is provided between the piston (50, 51) and the inner wall of the drive cavity (20); the piston (50, 51) passes through the adjusting body (71) and a sealing element (73) is provided at the connection between the piston (50, 51) and the adjusting body (71).

9. The pre-drainage pipe blockage cleaning device according to claim 1, characterized in that: The end of the extension pipe (11) away from the flushing chamber (10) is provided with an external thread, which is used to connect an extension pipe that can extend the extension pipe; The outer wall of the flushing chamber (10) is provided with multiple wing plates (74). The length direction of the wing plates (74) is parallel to the axis of the flushing chamber (10). The flushing pipes (30, 31, 32) are arranged between the wing plates (74) and the adjacent wing plates (74). The height of the wing plates (74) is greater than the height of the flushing pipes (30, 31, 32).

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