Road closed conduit dredging device and dredging method

Abstract

The invention relates to the field of pipe channel dredging, and discloses a road closed conduit dredging device and a dredging method.The dredging device comprises a shovel cylinder, an action rod, a cutter and a driving assembly; the shovel cylinder is provided with an open end and a closed end which are opposite in the axial direction; the action rod is connected with the shovel cylinder and used for pushing and pulling the shovel cylinder; when the shovel cylinder is pushed into the closed conduit, sludge is shoveled into the shovel cylinder through the open end; the cutter is located at the open end of the shovel cylinder and rotationally connected with the action rod. The driving assembly is arranged on the action rod, and the driving assembly is connected with the cutter and used for driving the cutter to rotate so as to cut off sludge in the closed conduit on the end face of the open end; according to the road closed conduit dredging method, the action rod pushes the shovel cylinder to move in the closed conduit, sludge in the closed conduit can be shoveled into the shovel cylinder, and the driving assembly drives the cutter to cut off the sludge at the open end of the shovel cylinder; and in the process that the shovel cylinder retreats from the closed conduit, the push plate is pushed by the ejector rod to eject the sludge out of the shovel cylinder, and the sludge cleaning operation is convenient and efficient.

Description

Technical Field

[0002] The invention relates to the field of pipeline dredging, and in particular to a highway culvert dredging device and a dredging method. Background Art

[0003] When constructing a highway, drainage pipes are first buried in the roadbed, and then the soil is backfilled and the road surface is paved. Therefore, the pipes are mostly in the form of underground channels under the road surface. For example, the drainage pipes on mountain roads in the Wuyi Mountain area mainly connect the open channels on the mountain side of the highway and discharge the accumulated water in the open channels to the side below the highway slope to prevent rainwater from flooding the road surface. The distribution characteristics of the above underground channels are that there are many of them arranged along the direction of the highway. Since the water flow in the underground channels is generally not large, the pipe diameter is generally less than 0.5m. After the underground channels have been used for a period of time, a certain thickness of sediment will accumulate inside. In addition, due to the growth and extension of plant roots, sediment is easily accumulated in the underground channels to form silt, which in turn affects the drainage efficiency and often causes water to flood the road surface.

[0004] In order to keep the drainage of the culverts unobstructed, the above-mentioned culverts need to be cleaned regularly by road maintenance personnel. When using tools such as hoes and long rakes for cleaning, due to the limitation of tool length and operating space in the channel, they can generally only dredge the area near the mouth of the culvert, and it is difficult to clean the silt inside the culvert. In addition, faced with many culverts, the above-mentioned cleaning method is time-consuming and inefficient. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a dredging device and a dredging method which can be specifically used for highway culverts. The dredging device and the dredging method for highway culverts are reasonably designed, easy to operate and have high cleaning efficiency.

[0006] The embodiments of the present invention are implemented by the following technical solutions: In one aspect, the present invention provides a highway culvert dredging device, comprising: A shovel barrel having an open end and a closed end opposite to each other in the axial direction; An action rod, which is coaxial with the axis of the shovel barrel, is connected to the shovel barrel and is used to push and pull the shovel barrel; when the shovel barrel is pushed into the culvert by the thrust of the action rod, the sludge is shoveled into the shovel barrel through the open end; a cutter located at the open end of the shovel barrel, the cutter being rotatably connected to the actuating rod; and A driving assembly is arranged on the actuating rod and is connected to the cutter to drive the cutter to rotate at least one circle in a vertical plane perpendicular to the axis of the shovel barrel so as to cut off the sludge in the culvert at the open end. When the shovel barrel is pulled out of the culvert by the actuating rod, the sludge that has been cut off and received by the shovel barrel is dragged out of the culvert, thereby realizing the step-by-step cleaning of the sludge in the culvert.

[0007] Furthermore, it also includes a top rod horizontally arranged outside the culvert, and the top rod points into the culvert; A push plate is axially slidably arranged inside the shovel barrel, and the closed end has a first through hole opposite to the push rod. After the shovel barrel exits the culvert, the push rod can push the push plate to slide so as to push out the sludge in the shovel barrel.

[0008] Furthermore, it also includes a suspension assembly, the top rod is arranged on the suspension assembly, and the suspension assembly includes: An insertion assembly is inserted into the inner top of the culvert along the culvert opening; A plurality of vertically arranged connecting members, all connected to the insertion assembly, the plurality of connecting members being outside the culvert and extending upward to above the road surface; and A pressure plate is arranged on the upper ends of the plurality of connecting members, and a screw with a lower end abutting against the road surface is screwed on the pressure plate to lock the suspension assembly at the channel mouth.

[0009] Furthermore, on any cross section perpendicular to the axial direction of the shovel barrel, the outer contour of the cross section of the shovel barrel is in the shape of a major arc with a first notch at the upper end, and the insertion component is inserted along the first notch and abuts against the inner top of the culvert, so that the axial movement of the shovel barrel in the culvert does not produce motion interference with the insertion component.

[0010] Furthermore, a guide assembly located outside the dark channel is horizontally arranged on the suspension assembly, and a bracket capable of reciprocating along the axial direction of the dark channel is arranged on the guide assembly; The bracket is in the shape of a concave arc plate, and its inner diameter is the same as the inner diameter of the culvert; the top rod is provided with an elastic member that abuts against the bracket, so as to push the bracket to abut against the mouth of the culvert. When the shovel tube is pulled out of the culvert, the elastic force of the elastic member acting on the bracket is greater than the friction resistance between the outer wall of the shovel tube and the inner wall of the bracket, so that the shovel tube can slide smoothly into the bracket.

[0011] Furthermore, in the axial direction of the dark channel, the bracket has a first end and a second end opposite to each other, the first end of the bracket is open and abuts against the channel opening of the dark channel, and the second end of the bracket is provided with a limit plate for limiting the shovel barrel from sliding out; The push rod is located outside the second end of the bracket and has a spacing with the bracket, so that the push rod can be inserted into the first through hole only after the distance between the bracket and the culvert reaches the value of the spacing, that is, after the distance between the bracket and the channel mouth reaches the value of the spacing, the push rod pushes the push plate to gradually push the silt out from the open end of the shovel barrel.

[0012] Furthermore, the limiting plate is provided with a second through hole coaxial with the first through hole, and the push rod is provided with a sliding sleeve, and the outer diameter of the sliding sleeve is larger than the inner diameter of the second through hole; the elastic member is a spring sleeved on the push rod, and the spring is against the sliding sleeve so that the sliding sleeve is against the limiting plate.

[0013] Furthermore, the driving assembly comprises: A piston cylinder, which is arranged on the actuating rod, and the piston cylinder is provided with a driving rod capable of reciprocating along the axial direction of the culvert; and The sleeve is rotatably arranged on the actuating rod and cannot move axially, and the cutter is arranged on the sleeve; a spiral groove is axially arranged on the outer wall of the sleeve, and the slider portion on the end of the driving rod is inserted into the spiral groove, and the driving rod and the slider portion are driven to reciprocate axially by the piston cylinder, and then the slider portion forces the sleeve and the cutter on the sleeve to rotate in a vertical plane perpendicular to the axis of the shovel barrel.

[0014] Furthermore, the shovel barrel comprises a shovel barrel body with an inner diameter smaller than that of the culvert, and an open end of the shovel barrel body is provided with a shovel mouth with an outer diameter matching the inner diameter of the culvert; the shovel mouth is provided with a group of second notches extending to the shovel barrel body, and a group of inserts that can slide along the axial direction of the shovel barrel are slidably provided on the second notches, and the upper ends of the inserts have a group of force-bearing parts; The cutter surface is provided with an arc strip arranged around the axis of the shovel barrel, the thickness of the arc strip on both sides in the extension direction is lower than the thickness in the middle, and the arc strip is in sliding contact with the force-bearing part to drive the insert to at least partially slide out of the second notch during the rotation of the cutter.

[0015] On the other hand, the present invention also provides a method for dredging a highway culvert dredging device as described above, comprising the following steps: Insert the shovel barrel into the culvert and install the hanging assembly; The shovel barrel is pushed forward by the action rod, so that the silt is shoveled into the shovel barrel and the silt is cut off by the cutter rotating in the vertical plane; The shovel barrel is pulled out to the bracket by the action rod, so that the bracket and the shovel barrel slide synchronously to the side away from the culvert, and the push rod contacts and pushes the push plate to push the silt out of the shovel barrel.

[0016] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects: In the highway culvert dredging device of the present invention, the shovel barrel is pushed to move in the culvert by the action rod, so that the silt in the culvert can be shoveled into the shovel barrel, and the cutter is driven to rotate to cut off the silt at the open end of the shovel barrel from the silt in the culvert, and then the shovel barrel carrying the silt is directly drawn out of the culvert to clean up the silt in the shovel barrel. In this way, the silt in the culvert can be conveniently cleaned up by reciprocating, and the culvert is suitable for dredging operations on culverts with narrow operating surfaces, and can also be used to clean up the inside of culverts far from the channel mouth. The operation method is simple and convenient. In addition, in the dredging method of the present invention, when cleaning the culvert, it is only necessary to use a hoe to clean the silt at the culvert mouth, and then insert the shovel barrel into the culvert. Since a suspension assembly is provided to fix the push rod, the shovel barrel can be withdrawn from the culvert by pushing the push plate through the push rod to push the silt out of the shovel barrel, thereby improving the convenience of the shovel barrel in removing the silt. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The use state of the highway culvert dredging device in the embodiment of the present invention is shown in FIG. Figure 1 ; Figure 2 The use state of the highway culvert dredging device in the embodiment of the present invention is shown in FIG. Figure 2 ; Figure 3 for Figure 1 An enlarged view of part A in FIG. Figure 4 for Figure 2 An enlarged view of part B in FIG. Figure 5 It is a working principle diagram of the highway culvert dredging device in an embodiment of the present invention; Icons: 10-highway, 11-culvert, 12-retaining wall, 20-shovel barrel, 200-shovel barrel body, 201-shovel mouth, 202-insert, 203-force-bearing part, 204-closed end, 205-first through hole, 206-open end, 21-cutter, 210-arc bar, 22-guide frame, 220-roller, 221-insert, 23-push plate, 30-action rod, 300-conical head, 31-sleeve, 310 - spiral groove, 40- driving assembly, 400- piston rod, 401- driving rod, 402- sliding block, 50- hanging assembly, 500- insert assembly, 501- connecting piece, 502- pressing plate, 503- screw rod, 504- pad, 60- bracket, 600- limiting plate, 601- second through hole, 70- ejector rod, 700- fixing frame, 701- nut, 71- elastic piece, 72- sliding sleeve, 80- guide assembly. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Generally, for the layout of the culvert 11 of the mountain road 10, refer to Figure 5 The culvert 11 is buried under the road surface of the highway 10, and a retaining wall 12 with a cement structure is provided on one side of the culvert 11 close to the slope to maintain the stability of the roadbed.

[0021] The diameters of the culverts 11 on the same mountain highway 10 are mostly the same, so a highway culvert dredging device can be designed to be used in the dredging operation of several culverts 11 on the same highway 10 to assist highway maintenance personnel in completing the dredging operation of the culvert 11 with higher efficiency. The specific structure of the highway culvert dredging device of the present invention will be described in detail with the following embodiments: Reference Figures 1 to 5 The present invention provides a highway culvert dredging device, including a shovel barrel 20, a cutter 21, an action rod 30, a driving assembly 40, a suspension assembly 50, a bracket 60, a push rod 70 and other components.

[0022] Among them, the function of the shovel barrel 20 is to shovel the silt in the culvert 11 and carry the silt shoveled into the shovel barrel 20 to the outside of the culvert 11; therefore, according to the shape of the culvert 11, on any cross-section perpendicular to the axial direction of the culvert 11, the cross-sectional profile of the shovel barrel 20 should be a full circle or an arc shape, and when the cross-sectional profile of the shovel barrel 20 is an arc shape, in order to adapt to the situation where the silt thickness in different culverts 11 is different as much as possible, the cross-sectional profile of the shovel barrel 20 should be a major arc, and the notch of the major arc (named as the first notch here to facilitate distinction from the second notch later) is facing upward.

[0023] Among them, refer to Figure 3 In the axial direction of the shovel barrel 20, the shovel barrel 20 has a relatively open end 206 and a closed end 204. When in use, the open end 206 is inserted into the culvert 11 before the closed end 204, so that the sludge can enter the shovel barrel 20 along the open end 206; the distance between the open end 206 and the closed end 204 is the maximum length of the shovel barrel 20 that can be shoveled into the shovel barrel 20.

[0024] Reference Figure 1The action rod 30 is coaxial with the axis of the shovel barrel 20, and one end of the action rod 30 is connected to the shovel barrel 20 (it can be welded or detachably connected). When in use, the other end of the action rod 30 is located outside the culvert 11. By pushing and pulling the action rod 30, the shovel barrel 20 can be moved axially in the culvert 11, that is, by pushing the action rod 30, the shovel barrel 20 can be shoveled into the silt.

[0025] Reference Figure 1 and Figure 3 , wherein the cutter 21 is located at the open end 206 of the shovel barrel 20, and the cutter 21 is rotatably connected to the action rod 30, that is, the cutter 21 can rotate around the axis of the shovel barrel 20 and the action rod 30; and the driving assembly 40 is arranged on the action rod 30, and the driving assembly 40 is connected to the cutter 21, so as to drive the cutter 21 to rotate so as to cut off the silt in the culvert 11 at the end face of the open end 206; after the cutter 21 completes the cutting action by rotating, the silt in the shovel barrel 20 is separated from the silt in the culvert 11, and by segmenting the silt in the culvert 11, it is easy to clean the silt in the culvert 11 section by section; at this time, by dragging the action rod 30 toward the outside of the culvert 11, the shovel barrel 20 carrying the silt can be pulled out of the culvert 11, and then it is only necessary to clean up the silt in the shovel barrel 20, and the above-mentioned actions can be repeated to complete the cleaning operation of the silt in the culvert 11.

[0026] It can be seen that the basic cleaning function of the highway culvert dredging device can be achieved through the cooperation of the shovel barrel 20, the cutter 21, the action rod 30 and the driving assembly 40.

[0027] In one embodiment, the driving assembly 40 may be a motor or a manual rocker; wherein the manual rocker is used to manually drive the cutter 21 to rotate, and is only used for culverts 11 of shorter length.

[0028] In a preferred embodiment, referring to Figure 4 In order to better drive the cutter 21 to rotate, the driving assembly 40 is a piston cylinder (such as an air cylinder) fixed on the action rod 30. The air pump device is arranged outside the culvert 11 and is powered by a generator. It is connected to the air cylinder through an air pipe (not shown) overlapped on the action rod 30. The piston rod 400 of the air cylinder is rotatably connected to a group of driving rods 401 through a coupling, and the front end of the driving rod 401 has a group of slider parts 402. A sleeve 31 is provided at the front end of the operating rod 30 near the end, and the sleeve 31 is rotatably sleeved on the operating rod 30. The operating rod 30 is provided with a limiting structure on the outer side of the axial ends of the sleeve 31 to prevent the sleeve 31 from sliding axially, that is, the sleeve 31 can only rotate around the axis of the operating rod 30 but cannot move axially, and the cutter 21 is fixedly set on the sleeve 31; a spiral groove 310 is axially arranged on the outer wall of the sleeve 31, and the slider portion 402 at the output end of the driving rod 401 is inserted into the spiral groove 310. Through the telescopic action of the cylinder, the slider portion 402 forces the sleeve 31 to rotate around the axis of the operating rod 30, thereby driving the cutter 21 to rotate at least one circle in a vertical plane perpendicular to the axis of the shovel barrel 20, so that the sludge in the culvert 11 can be cut into segments.

[0029] Alternatively, in one embodiment, the piston cylinder and the piston rod 400 may be replaced by an electric push rod, which drives the reciprocating motion of the driving rod 401.

[0030] The purpose of setting the driving rod 401 is to extend the distance between the piston rod 400 of the cylinder and the shovel barrel 20, thereby reducing the pollution of the cylinder by the mud; Figure 3 An insert 221 is fixedly provided on the upper portion of the closed end 204 of the shovel barrel 20, and a slot (not shown) is axially provided on the side wall of the driving rod 401, and the insert 221 is inserted into the slot so that the driving rod 401 does not rotate during the extension and retraction process.

[0031] The number of turns of the spiral groove 310 is an integer. Before cutting, the cutter 21 is vertically upward, and the driving rod 401 completes a set of telescopic actions, so that the cutter 21 remains vertically upward after rotating an integer number of turns.

[0032] In a preferred embodiment, in order to improve the convenience of unloading the shoveled sludge in the shovel barrel 20, refer to Figure 1 A relatively fixed top rod 70 is also horizontally arranged outside the culvert 11, and the top rod 70 points to the inside of the culvert 11; Figure 2 and Figure 3 A push plate 23 is axially slidably arranged inside the shovel barrel 20, and the closed end 204 of the shovel barrel 20 has a first through hole 205 opposite to the push rod 70; after the shovel barrel 20 exits the culvert 11, the shovel barrel 20 continues to move, and the push rod 70 can pass through the first through hole 205 and push the push plate 23 to slide from the closed end 204 to the open end 206 to push out the silt in the shovel barrel 20.

[0033] Among them, in this embodiment, two groups of push rods 70 are provided, and two groups of first through holes 205 corresponding to the two groups of push rods 70 are provided on the closed end 204 of the shovel tube 20. The two groups of push rods 70 are arranged at intervals and can act on different positions on the push plate 23, so that the push plate 23 is subjected to more uniform ejection force.

[0034] For example, refer to Figure 3 The upper side of the push plate 23 has an annular guide groove, which is slidably mounted on the sleeve 31. A convex strip (not shown) is axially arranged at the bottom of the shovel tube 20. The bottom of the push plate 23 is slidably embedded in the convex strip. The constraints of the sleeve 31 and the convex strip can provide guidance for the movement of the push plate 23. The width of the guide groove of the aforementioned push plate 23 is greater than the width of the slider portion 402, that is, the push plate 23 will not interfere with the axial movement of the slider portion 402 along the sleeve 31.

[0035] The top rod 70 can be supported and fixed on the outside of the culvert 11 by an external structure (such as a bracket).

[0036] In one embodiment, considering the on-site working environment of the dredging of the culvert 11, in order to improve the convenience of installing the top rod 70, refer to Figure 1 , Figure 2 and Figure 5 A suspension component 50 is also provided, wherein the suspension component 50 includes an insertion component 500, a connecting member 501, a pressing plate 502, a screw rod 503 and a pad 504.

[0037] Among them, the insertion component 500 is inserted into the inner top of the culvert 11 along the channel mouth of the culvert 11, and the insertion component 500 is provided with a group of arc plates, and the arc plates match the curvature of the culvert 11; a plurality of connecting parts 501 are vertically arranged on the outside of the culvert 11, and the lower ends of the connecting parts 501 are connected to the insertion component 500, and the connecting parts 501 extend upward from the outside of the culvert 11 to above the road surface of the highway 10, and a horizontal pressure plate 502 is arranged on the upper end of the connecting part 501, and at least three groups of screws 503 are screwed on the pressure plate 502, and the lower end of each screw 503 is pressed against the surface of the highway 10 through a pad 504; by screwing the force rod on the screw 503, the vertical spacing between the pad 504 and the insertion component 500 can be reduced, and the suspension component 50 can be firmly fixed between the highway 10 and the culvert 11, and the top rod 70 can be installed on the suspension component 50.

[0038] Since the insertion component 500 is inserted into the inner top of the culvert 11, the cross-sectional profile of the shovel barrel 20 should be an arc shape with a first notch at the upper end. The insertion component 500 is inserted along the first notch and abuts against the inner top of the culvert 11. The first notch prevents the axial movement of the shovel barrel 20 in the culvert 11 from interfering with the movement of the insertion component 500.

[0039] In addition, since the shovel barrel 20 needs to rely on the support of the top rod 70 after sliding out of the culvert 11, and the end of the top rod 70 close to the culvert 11 is a suspended free end, after long-term use, the free end of the top rod 70 will be compressed and tilted downward, in order to solve the above problem.

[0040] In a preferred embodiment, referring to Figure 3 and Figure 5A guide assembly 80 located outside the culvert 11 is also horizontally arranged on the suspension assembly 50. The guide assembly 80 is two sets of parallel long rods. One end of the guide assembly 80 extends to the inside of the culvert 11, and an arc plate is fixed to the front end of the guide assembly 80 to form the aforementioned insertion assembly 500; the other end of the guide assembly 80 is suspended to the outside of the culvert 11, and a bracket 60 that can reciprocate along the axial direction of the culvert 11 is slidably arranged on the guide assembly 80; the lower end of the connecting piece 501 is connected to the middle position of the rod body of the guide assembly 80; the first end of the guide assembly 80 is connected to the insertion assembly 500, and the insertion assembly 500 is supported on the inner wall of the culvert 11, so that the support of the components such as the top rod 70, the fixing frame 700, and the bracket 60 installed on the second end of the guide assembly 80 is more stable and reliable.

[0041] The bracket 60 is in the shape of a concave arc plate, and the inner diameter of the arc plate bracket 60 is the same as the inner diameter of the culvert 11. An elastic member 71 is provided on the top rod 70 to abut against the bracket 60. Under the action of the elastic member 71, the bracket 60 can be pushed to abut against the mouth of the culvert 11, and the shovel tube 20 can smoothly slide into the bracket 60 when it is pulled out of the culvert 11. It is easy to understand that when the elastic member 71 is not provided, the outer wall surface of the shovel tube 20 will contact with the culvert 11 when the shovel tube 20 is pulled out. The inner wall surface of the bracket 60 generates friction resistance, so that the shovel barrel 20 drives the bracket 60 to move together, and the shovel barrel 20 cannot slide smoothly into the bracket 60; and by providing an elastic member 71 on the top rod 70 to resist the bracket 60, when the shovel barrel 20 is pulled out of the culvert 11, the elastic force of the elastic member 71 acting on the bracket 60 is greater than the friction resistance between the outer wall surface of the shovel barrel 20 and the inner wall surface of the bracket 60, so that the shovel barrel 20 can slide smoothly into the bracket 60.

[0042] Among them, in the axial direction of the culvert 11, the bracket 60 has a first end and a second end that are opposite. The first end of the bracket 60 is open and abuts against the mouth of the culvert 11. The second end of the bracket 60 is provided with a limit plate 600 for limiting the shovel barrel 20 from sliding out; the limit plate 600 is provided with two groups of second through holes 601 that are coaxial with the two groups of first through holes 205 respectively. After the shovel barrel 20 slides out of the culvert 11, it can be supported by the bracket 60, and the function of the push rod 70 is limited to ejecting the push plate 23.

[0043] Reference Figure 5 Specifically, one end of the push rod 70 is sleeved on the guide assembly 80 through the fixing frame 700, and the end of the guide assembly 80 is threadedly connected with a nut 701 to limit the fixing frame 700 from sliding out of the guide assembly 80; Figure 4, wherein the first end of the push rod 70 is installed on the guide assembly 80 through the fixing frame 700, and the second end of the push rod 70 is sleeved with a sliding sleeve 72, and the outer diameter of the sliding sleeve 72 is larger than the inner diameter of the second through hole 601; the elastic member 71 is a spring sleeved on the push rod 70, and the two ends of the spring are respectively against the fixing frame 700 and the sliding sleeve 72, so that the sliding sleeve 72 is against the limiting plate 600.

[0044] Reference Figure 4 Since there is a spacing H between the second end of the push rod 70 and the limit plate 600, when the bracket 60 is driven by the action rod 30 to move toward the first end of the push rod 70, within the range of the spacing H, the push rod 70 cannot act on the push plate 23, that is, after a certain spacing is generated between the bracket 60 and the channel mouth of the culvert 11, the push rod 70 pushes the push plate 23 to gradually push the silt out from the open end 206 of the shovel barrel 20, that is, the silt will not be pushed out when there is no spacing between the bracket 60 and the channel mouth of the culvert 11, otherwise the silt may remain at the channel mouth.

[0045] Reference Figure 3 The shovel barrel 20 includes a shovel barrel body 200 whose inner diameter is smaller than that of the culvert 11, and an open end 206 of the shovel barrel body 200 is provided with a shovel mouth 201 whose outer diameter matches the inner diameter of the culvert 11, and a closed end 204 of the shovel barrel body 200 is provided with a guide frame 22, on which three groups of rollers 220 are provided for rolling contact with both sides of the inner wall and the bottom wall of the culvert 11. Through the support of the shovel mouth 201 and the guide frame 22, the axis of the shovel barrel body 200 is coaxial with the axis of the culvert 11.

[0046] In the culvert 11 of some geographical environments, the silt flushed in is mostly in the form of mud and sand structure, which is very easy to loosen and collapse under the scouring of the water flow in the culvert 11. When the shovel barrel 20 shovels into the above-mentioned mud and sand, the water flow on the surface of the mud will flow into the lower mud and sand along the cut left by the cutter 21; since the end surface of the mud cut by the cutter 21 is a vertical surface, the mud and sand shoveled into the shovel barrel 20 (which is close to the open end 206 of the shovel barrel 20) is easily collapsed and separated from the shovel barrel 20 under the immersion of water flow, affecting the dredging efficiency.

[0047] Therefore, in one embodiment, referring to Figure 3 A group of second notches extending to the shovel barrel body 200 are provided in the middle of the lower side of the shovel mouth 201, and a group of inserts 202 are provided on the second notches so as to slide axially along the shovel barrel 20. The upper ends of the inserts 202 have a group of force-bearing parts 203. When the inserts 202 slide toward the outside of the shovel mouth 201, the water flow can flow into the outside of the shovel barrel body 200 along the gap between the inserts 202 and the second notches. The outer diameter of the shovel barrel body 200 is smaller than the inner diameter of the culvert 11, so the water flow can be discharged conveniently.

[0048] To achieve the above actions, refer to Figure 3An arc strip 210 is protrudingly provided on the surface of the cutter 21 and is arranged around the axis of the shovel barrel 20. The thickness of the arc strip 210 on both sides in the extension direction is lower than the thickness in the middle. During the rotation of the cutter 21, the arc strip 210 slides in contact with the force-bearing portion 203. When the arc strip 210 changes from contacting the side with the force-bearing portion 203 to contacting the middle of the arc strip 210 with the force-bearing portion 203, the insert 202 can be pushed to slide out of the second notch at least partially.

[0049] When the insert 202 is shoveled into the sludge next time, the insert 202 will be retracted into the second notch of the shovel mouth 201 due to the reaction force of the sludge.

[0050] The shovel barrel 20 and the bracket 60 can be made of iron oil drums, which are easy to obtain.

[0051] In addition, in one embodiment, the actuating rod 30 is a steel pipe, one end of which is inserted into the culvert 11 and is threadedly connected with a conical head 300. During the insertion process of the actuating rod 30, the conical head 300 can reduce the resistance of the surface silt of the culvert 11 to the actuating rod 30. After dredging is completed, the conical head 300 at the front end of the steel pipe can be removed, and the high-pressure pump can be connected to spray high-pressure water into the culvert 11 for flushing operations, thereby improving the dredging effect.

[0052] In addition, the dredging method of the highway culvert dredging device of the present invention is as follows: First, use a hoe to clean the silt at the mouth of the culvert 11; Then, the shovel barrel 20 is inserted into the culvert 11, and the suspension assembly 50 is installed, and then the top rod 70 and the bracket 60 and other structures are installed; Next, the shovel barrel 20 is pushed forward by the action rod 30 to shovel mud into the shovel barrel 20, and the driving assembly is operated to make the cutter 21 cut the mud; Finally, the shovel barrel 20 is pulled out onto the bracket 60 by the actuating rod 30 , so that the bracket 60 and the shovel barrel 20 slide synchronously to the side away from the culvert 11 , and the push rod 70 contacts and pushes the push plate 23 to push the silt out of the shovel barrel 20 .

[0053] When shoveling mud into the shovel barrel 20 again, the mud can push the push plate 23 to move toward the closed end 204 of the shovel barrel 20 to reset.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A highway culvert dredging device, characterized in that: include: A shovel barrel (20) having an open end (206) and a closed end (204) opposite to each other in the axial direction; an action rod (30) which is coaxial with the axis of the shovel barrel (20), and is connected to the shovel barrel (20) to drive the shovel barrel (20) to move axially; when the shovel barrel (20) is pushed into the culvert (11), the sludge is shoveled into the shovel barrel (20) through the open end (206); A cutter (21) is located at the open end (206) of the shovel tube (20), and the cutter (21) is rotatably connected to the actuating rod (30); as well as A drive assembly (40) is arranged on the actuating rod (30). The drive assembly (40) is connected to the cutter (21) and is used to drive the cutter (21) to rotate at least one circle in a vertical plane perpendicular to the axis of the shovel barrel (20) to cut off the sludge at the open end (206).

2. The highway culvert dredging device according to claim 1, characterized in that: It also includes a top rod (70) horizontally fixedly installed on the outside of the culvert (11), and the top rod (70) points into the culvert (11); A push plate (23) is axially slidably arranged inside the shovel barrel (20), and the closed end (204) has a first through hole (205) opposite to the push rod (70), so that after the shovel barrel (20) exits the culvert (11), the push rod (70) can push the push plate (23) to slide and push out the sludge in the shovel barrel (20).

3. The highway culvert dredging device according to claim 2, characterized in that: It also includes a suspension component (50), the top rod (70) is arranged on the suspension component (50), and the suspension component (50) includes: An insertion assembly (500) is inserted into the inner top of the culvert (11) along the opening of the culvert (11); A plurality of connecting members (501), all connected to the insertion assembly (500), the plurality of connecting members (501) being located outside the culvert (11) and extending upward to above the road surface of the highway (10); and A pressure plate (502) is arranged at the upper ends of the plurality of connecting members (501), and a plurality of screws (503) whose lower ends abut against the road surface of the highway (10) are screwed on the pressure plate (502) to lock the suspension assembly (50).

4. The highway culvert dredging device according to claim 3, characterized in that: On any cross section perpendicular to the axial direction of the shovel barrel (20), the cross-sectional outer contour of the shovel barrel (20) is in the shape of a major arc with a first notch at the upper end, and the insertion component (500) is inserted along the first notch and abuts against the inner top of the culvert (11).

5. The highway culvert dredging device according to claim 3, characterized in that: The suspension assembly (50) is also provided with a guide assembly (80) located outside the culvert (11), and a bracket (60) capable of axially reciprocating along the culvert (11) is slidably provided on the guide assembly (80); The bracket (60) is in the shape of a concave arc plate, and its inner diameter is the same as the inner diameter of the culvert (11); the top rod (70) is provided with an elastic member (71) that abuts against the bracket (60) and is used to push the bracket (60) to abut against the channel mouth of the culvert (11), so that the shovel tube (20) can slide into the bracket (60) after sliding out of the culvert (11).

6. The highway culvert dredging device according to claim 5, characterized in that: In the axial direction of the culvert (11), the bracket (60) has a first end and a second end opposite to each other, the first end of the bracket (60) is open and abuts against the opening of the culvert (11), and the second end of the bracket (60) is provided with a limiting plate (600) for limiting the shovel barrel (20) from sliding out; The push rod (70) is located outside the second end of the bracket (60) and has a spacing between it and the bracket (60), so that the push rod (70) can be inserted into the first through hole (205) only after the distance between the bracket (60) and the culvert (11) reaches the value of the spacing.

7. The highway culvert dredging device according to claim 6, characterized in that: The limiting plate (600) is provided with a second through hole (601) coaxial with the first through hole (205); the push rod (70) is provided with a sliding sleeve (72) abutting against the limiting plate (600); the elastic member (71) is a spring sleeved on the push rod (70) and abutting against the sliding sleeve (72); the end of the push rod (70) away from the shovel barrel (20) is fixed on the guide assembly (80) by a fixing frame (700) to limit the position.

8. The highway culvert dredging device according to claim 1, characterized in that: The driving assembly (40) comprises: A piston cylinder, which is arranged on the actuating rod (30), and the piston cylinder is drivingly connected to a driving rod (401) capable of axially reciprocating along the actuating rod (30); and A sleeve (31) is rotatably mounted on the actuating rod (30), and the cutter (21) is mounted on the sleeve (31); a spiral groove (310) is axially arranged on the outer wall of the sleeve (31), and the end of the driving rod (401) is inserted into the spiral groove (310).

9. The highway culvert dredging device according to claim 8, characterized in that: The shovel barrel (20) comprises a shovel barrel body (200) whose inner diameter is smaller than that of the culvert (11); an open end (206) of the shovel barrel body (200) is provided with a shovel mouth (201) whose outer diameter matches the inner diameter of the culvert (11); a group of second notches extending to the shovel barrel body (200) are provided on the shovel mouth (201); a group of inserts (202) capable of sliding along the axial direction of the shovel barrel (20) are slidably arranged in the second notches; the upper ends of the inserts (202) are provided with a group of force-bearing parts (203); The surface of the cutter (21) is provided with an arc strip (210) arranged around the axis of the shovel barrel (20), and the thickness of the arc strip (210) on both sides in the extension direction is lower than the thickness in the middle; during the rotation of the cutter (21), the arc strip (210) is in sliding contact with the force-bearing portion (203) to drive the insert (202) to at least partially slide out of the second notch.

10. A method for dredging a highway culvert according to claim 5, 6 or 7, characterized in that: The steps include: Inserting the shovel barrel (20) into the culvert (11) and installing the suspension assembly (50); The shovel barrel (20) is pushed forward by the action rod (30), so that the shovel barrel (20) is shoveled into the shovel barrel (20) and the cutter (21) is rotated in the vertical plane to cut off the shovel; The shovel barrel (20) is pulled to slide onto the bracket (60) by the action rod (30), so that the bracket (60) and the shovel barrel (20) slide synchronously to the side away from the culvert (11), and the push rod (70) contacts and pushes the push plate (23) to push the sludge out of the shovel barrel (20).

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