A highway culvert dredging device and a dredging method

Abstract

The present invention relates to the field of pipe and channel dredging, and discloses a highway culvert dredging device and a dredging method. The dredging device includes a shovel barrel, an operating rod, a cutting knife and a driving assembly; the shovel barrel has an open end and a closed end opposite to each other in the axial direction; the operating rod is connected to the shovel barrel for pushing and pulling the shovel barrel; when the shovel barrel is pushed into the culvert, the silt is shoveled into the shovel barrel through the open end; the cutting knife is located at the open end of the shovel barrel, and the cutting knife is rotatably connected to the operating rod; the driving assembly is arranged on the operating rod, and the driving assembly is connected to the cutting knife for driving the cutting knife to rotate so as to cut the silt in the culvert at the end face of the open end; in the highway culvert dredging method of the present invention, the shovel barrel is pushed by the operating rod to move in the culvert, the silt in the culvert can be shoveled into the shovel barrel, and the driving assembly is used to drive the cutting knife to cut the silt at the open end of the shovel barrel; during the process of the shovel barrel withdrawing from the culvert, the silt can be pushed out of the shovel barrel by the ejector rod pushing the push plate, and the silt cleaning operation is convenient and efficient.

Description

Technical Field

[0001] The present invention relates to the field of pipe channel dredging, and more particularly, to a highway culvert dredging device and a dredging method. Background Art

[0002] When building a highway, drainage pipes are first embedded in the road base layer, and then the soil is backfilled and the road surface is paved. Therefore, the pipes mostly exist in the form of culverts under the road surface. For example, the drainage pipes of mountain roads in areas such as Wuyi Mountain mainly connect the open channels on the mountain side of the highway and discharge the accumulated water in the open channels to the lower part on the side of the highway slope, which can prevent the road surface from being flooded by rainwater. The distribution characteristics of the above culverts are that there are many arranged along the highway direction. Since the water flow in the culvert is generally small, the pipe diameter is generally below 0.5 m. After the culvert is used for a period of time, a certain thickness of sediment will accumulate inside, and with the growth and extension of plant roots, the sediment is likely to accumulate in the culvert to form silt, which will affect the drainage efficiency and often cause the situation of water flooding the road surface.

[0003] To keep the culvert drainage unobstructed, the above culverts need to be regularly cleaned by road maintenance personnel. When using tools such as hoes and long rakes for cleaning, due to the limitation of the tool length and the operation space in the culvert, generally only the vicinity of the culvert opening can be dredged, and it is difficult to clean the silt inside the culvert. In addition, in the face of numerous culverts, the above cleaning method is time-consuming and inefficient. Summary of the Invention

[0004] In view of the above deficiencies of the prior art, the purpose of the present invention is to provide a dredging device and a dredging method that 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.

[0005] The embodiments of the present invention are achieved by the following technical solutions:

[0006] On the one hand, the present invention provides a highway culvert dredging device, including:

[0007] A shovel barrel having an axially opposite open end and a closed end;

[0008] An action rod coaxial with the axis of the shovel barrel, the action rod being connected to the shovel barrel for pushing and pulling the shovel barrel; when the shovel barrel is pushed into the culvert by the thrust of the action rod, silt is shoveled into the shovel barrel through the open end;

[0009] A cutter located at the open end of the shovel barrel, the cutter being rotatably connected to the action rod; and

[0010] A driving component is provided on the operating rod. The driving component is connected to the cutter and is used 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 silt in the culvert at the open end. When the shovel barrel is pulled out of the culvert by the operating rod, the cut silt received by the shovel barrel is dragged out of the culvert, realizing the step-by-step cleaning of the silt in the culvert.

[0011] Furthermore, it further includes a top rod horizontally arranged outside the culvert, and the top rod points into the culvert;

[0012] A push plate is slidably arranged along the axial direction inside the shovel barrel. The closed end has a first through hole opposite to the top rod. After the shovel barrel exits the culvert, the top rod can push the push plate to slide to eject the silt in the shovel barrel.

[0013] Furthermore, it further includes a suspension component. The top rod is arranged on the suspension component. The suspension component includes:

[0014] An insertion component is inserted into the inner top of the culvert along the culvert opening;

[0015] A number of vertically arranged connecting pieces are all connected to the insertion component. The number of connecting pieces is outside the culvert and extends upward above the road surface; and

[0016] A pressing plate is arranged at the upper ends of the number of connecting pieces. A screw rod with the lower end abutted against the road surface is screwed on the pressing plate to lock the suspension component at the culvert opening.

[0017] Furthermore, on any cross-section perpendicular to the axis of the shovel barrel, the outer contour of the cross-section of the shovel barrel is in the shape of a superior arc with a first notch at the upper end. 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 interfere with the movement of the insertion component.

[0018] Furthermore, a guiding component is also horizontally arranged on the suspension component outside the culvert. A bracket that can reciprocate along the axial direction of the culvert is arranged on the guiding component;

[0019] The bracket is in the shape of a concave arc plate, and the inner diameter is the same as the inner diameter of the culvert; an elastic member abutted against the bracket is arranged on the top rod and is used to push the bracket to abut against the culvert opening of the culvert. When the shovel barrel is pulled out of the culvert, the elastic force acting on the bracket by the elastic member is greater than the frictional resistance between the outer wall of the shovel barrel and the inner wall of the bracket, so that the shovel barrel can smoothly slide into the bracket.

[0020] Further, in the axial direction of the culvert, the bracket has opposite first and second ends. The first end of the bracket is open and abuts against the mouth of the culvert, and a limiting plate for restricting the sliding out of the shovel barrel is provided at the second end of the bracket;

[0021] The ejector rod is located outside the second end of the bracket and has a spacing from the bracket, so that after the distance between the bracket and the culvert reaches the value of the spacing, the ejector rod can be inserted into the first through hole, that is, after the spacing between the bracket and the culvert mouth generates a value, the ejector rod pushes the push plate to gradually push the silt out from the open end of the shovel barrel.

[0022] Further, a second through hole coaxial with the first through hole is provided on the limiting plate, and a sliding sleeve is sleeved on the ejector rod. 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 ejector rod, and the spring abuts against the sliding sleeve to make the sliding sleeve abut against the limiting plate.

[0023] Further, the driving assembly includes:

[0024] A piston cylinder, which is provided on the action rod, and a driving rod capable of reciprocating axially along the culvert is provided on the piston cylinder; and

[0025] A sleeve, which is rotatably arranged on the action rod and cannot move axially, and the cutter is provided on the sleeve; a spiral groove is axially and circumferentially arranged on the outer wall of the sleeve, and the slider part at the end of the driving rod is inserted into the spiral groove. By driving the driving rod and the slider part to reciprocate axially by the piston cylinder, the slider part then forces the sleeve and the cutter on the sleeve to rotate in the vertical plane perpendicular to the axis of the shovel barrel.

[0026] Further, the shovel barrel includes a shovel barrel body with an inner diameter smaller than that of the culvert, and a shovel mouth with an outer diameter matching the inner diameter of the culvert is provided at the open end of the shovel barrel body; a group of second notches extending to the shovel barrel body are provided on the shovel mouth, and a group of inserts capable of sliding axially along the shovel barrel are slidably arranged on the second notches, and a group of force-receiving parts are provided at the upper ends of the inserts;

[0027] An arc-shaped strip arranged around the axis of the shovel barrel is provided on the surface of the cutter. The thicknesses on both sides of the arc-shaped strip in the extending direction are lower than the thickness in the middle, and the arc-shaped strip is in sliding contact with the force-receiving part to drive at least part of the insert to slide out of the second notch during the rotation of the cutter.

[0028] On the other hand, the present invention also provides a dredging method for the highway culvert dredging device as described above, including the following steps:

[0029] Insert the shovel barrel into the culvert and install the suspension assembly;

[0030] Push the shovel barrel forward through the action rod, so that the shovel barrel shovels silt into it and rotates the cutting knife in the vertical plane to cut off the silt;

[0031] Pull the shovel barrel out through the action rod to the bracket, so that the bracket and the shovel barrel slide synchronously to the side away from the culvert, and the ejector rod contacts and pushes the push plate to eject the silt from the shovel barrel.

[0032] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0033] In the highway culvert dredging device of the present invention, by pushing the shovel barrel to move in the culvert through the action rod, the silt in the culvert can be shoveled into the shovel barrel, and the cutting knife 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 directly pull out the shovel barrel carrying the silt from the culvert, and clean the silt in the shovel barrel. In this way, the silt in the culvert can be conveniently cleaned up, which is suitable for dredging operations on culverts with narrow operating surfaces, and can also clean the inside of culverts far from the culvert entrance. The operation method is simple and convenient;

[0034] In addition, in the dredging method of the present invention, when cleaning the culvert, only need to use a hoe to clean the silt at the culvert entrance, and then insert the shovel barrel into the culvert. Since there is a suspension component to fix the ejector rod, during the process of the shovel barrel withdrawing from the culvert, the ejector rod can be used to push the push plate to eject the silt from the shovel barrel, improving the convenience of discharging the silt from the shovel barrel. Description of the Drawings

[0035] Figure 1 Shows the use state of the highway culvert dredging device in the embodiment of the present invention Figure 1 ;

[0036] Figure 2 Shows the use state of the highway culvert dredging device in the embodiment of the present invention Figure 2 ;

[0037] Figure 3 Is Figure 1 The enlarged view of part A in

[0038] Figure 4 Is Figure 2 The enlarged view of part B in

[0039] Figure 5 Is the working principle diagram of the highway culvert dredging device in the embodiment of the present invention;

[0040] Icons: 10 - Highway, 11 - Culvert, 12 - Retaining Wall, 20 - Shovel Barrel, 200 - Shovel Barrel Body, 201 - Shovel Mouth, 202 - Insert Block, 203 - Stress Part, 204 - Closed End, 205 - First Through Hole, 206 - Open End, 21 - Cutter, 210 - Arc Strip, 22 - Guide Frame, 220 - Roller, 221 - Insert Piece, 23 - Push Plate, 30 - Action Rod, 300 - Tapered Head, 31 - Sleeve, 310 - Spiral Groove, 40 - Driving Assembly, 400 - Piston Rod, 401 - Driving Rod, 402 - Slide Block Part, 50 - Suspension Assembly, 500 - Insertion Assembly, 501 - Connecting Piece, 502 - Pressure Plate, 503 - Screw, 504 - Base Plate, 60 - Bracket, 600 - Limiting Plate, 601 - Second Through Hole, 70 - Ejector Rod, 700 - Fixed Frame, 701 - Nut, 71 - Elastic Part, 72 - Slide Sleeve, 80 - Guide Assembly. Detailed Implementation Manner

[0041] To make the objectives, 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 accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0042] Generally, for the layout form of the culvert 11 of the mountain highway 10, refer to Figure 5 , the culvert 11 is buried below the road surface of the highway 10, and a retaining wall 12 made of a cement structure is provided on one side of the culvert 11 close to the slope to maintain the stability of the roadbed.

[0043] Moreover, the diameters of the culverts 11 on the same mountain highway 10 are mostly the same. Therefore, a highway culvert dredging device can be designed to be used in the dredging operations of several culverts 11 on the same highway 10 to assist highway maintenance personnel in completing the silt cleaning operation of the culverts 11 with higher efficiency. For the specific structure of the highway culvert dredging device of the present invention, the following embodiments will be described in detail:

[0044] Refer to Figures 1 to 5 , the present invention provides a highway culvert dredging device, which includes a shovel barrel 20, a cutter 21, an action rod 30, a driving assembly 40, a suspension assembly 50, a bracket 60, an ejector rod 70 and other components.

[0045] Among them, the function of the shovel barrel 20 is to shovel the silt located 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 contour of the shovel barrel 20 should be a complete circle or an arc. When the cross-sectional contour of the shovel barrel 20 is an arc, in order to adapt to the different thicknesses of the silt in different culverts 11 as much as possible, the cross-sectional contour of the shovel barrel 20 should be a major arc, and the notch of the major arc (named the first notch here for easy distinction from the second notch in the following text) faces upward.

[0046] Among them, with reference to Figure 3 , in the axial direction of the shovel barrel 20, the shovel barrel 20 has opposite open ends 206 and closed ends 204. When in use, the open end 206 is inserted into the culvert 11 before the closed end 204 so that the silt 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 silt that can be shoveled into the shovel barrel 20.

[0047] With reference to Figure 1 , the action rod 30 is coaxial with the axis of the shovel barrel 20. One end of the action rod 30 is connected to the shovel barrel 20 (which 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 axially moved in the culvert 11, that is, by pushing the action rod 30, the shovel barrel 20 can shovel the silt.

[0048] With reference to Figure 1 and Figure 3 , among them, the cutting knife 21 is located at the open end 206 of the shovel barrel 20, and the cutting knife 21 is rotatably connected to the action rod 30, that is, the cutting knife 21 can rotate around the axes 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 cutting knife 21 to drive the cutting knife 21 to rotate to cut the silt in the culvert 11 at the end face of the open end 206; after the cutting knife 21 completes the cutting action by rotating, the silt in the shovel barrel 20 is separated from the silt in the culvert 11. 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 outside the culvert 11, the shovel barrel 20 carrying the silt can be pulled out of the culvert 11, and then only the silt in the shovel barrel 20 needs to be cleaned. By repeating the above actions, the cleaning operation of the silt in the culvert 11 can be completed.

[0049] It can be seen that through the cooperation of the above-mentioned shovel barrel 20, cutting knife 21, action rod 30 and driving assembly 40, the basic cleaning function of the highway culvert dredging device can be realized.

[0050] In one embodiment, the driving assembly 40 can be a motor or a manual rocker arm; among them, the function of the manual rocker arm is to manually drive the cutting knife 21 to rotate, and it is only used for culverts 11 with shorter lengths.

[0051] In a preferred embodiment, referring to Figure 4 , in order to better drive the rotation of the cutter 21, the driving assembly 40 is a piston cylinder (such as a cylinder) fixed on the operating rod 30. The air pump device is arranged outside the culvert 11 and powered by a generator, and is communicated with the cylinder through an air pipe (not shown) lapped on the operating rod 30; the piston rod 400 of the cylinder is rotatably connected with 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;

[0052] And a sleeve 31 is arranged on the front end of the operating rod 30 close to one side of the end. The sleeve 31 is rotatably sleeved on the operating rod 30. The operating rod 30 is provided with a limiting structure on the outer sides of the two axial ends of the sleeve 31 to prevent the axial sliding of the sleeve 31, that is, the sleeve 31 can only rotate around the axis of the operating rod 30 and cannot move axially. The cutter 21 is fixedly arranged on the sleeve 31; a spiral groove 310 is axially and circumferentially arranged on the outer wall of the sleeve 31. The slider part 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 part 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 the vertical plane perpendicular to the axis of the shovel barrel 20, and the silt in the culvert 11 can be cut and segmented.

[0053] Alternatively, in an embodiment, the piston cylinder and the piston rod 400 can be replaced by an electric push rod, and the reciprocating motion of the driving rod 401 is driven by the electric push rod.

[0054] Wherein, the function of arranging the driving rod 401 is to extend the distance between the piston rod 400 of the cylinder and the shovel barrel 20 and reduce the pollution of the cylinder by the slurry; referring to Figure 3 , a inserting piece 221 is fixedly arranged on the upper part of the closed end 204 of the shovel barrel 20. A slot (not shown) is axially arranged on the side wall of the driving rod 401, and the inserting piece 221 is inserted into the slot so that the driving rod 401 does not rotate during the telescopic process.

[0055] Wherein, the number of turns of the spiral groove 310 is an integer. Before cutting, the cutter 21 is vertically upward. After the driving rod 401 completes a set of telescopic actions, the cutter 21 rotates an integer number of turns and remains vertically upward.

[0056] In a preferred embodiment, in order to improve the convenience of discharging the silt shoveled into the shovel barrel 20, referring to Figure 1 , a relatively fixed ejector rod 70 is also horizontally arranged outside the culvert 11, and the ejector rod 70 points into the culvert 11; referring to Figure 2 and Figure 3, a push plate 23 is slidably arranged axially inside the shovel barrel 20, and the closed end 204 of the shovel barrel 20 has a first through hole 205 opposite to the ejector rod 70; after the shovel barrel 20 exits the culvert 11, during the continuous movement of the shovel barrel 20, the ejector rod 70 can pass through the first through hole 205 and push the push plate 23 to slide from the closed end 204 towards the open end 206, so as to eject the silt in the shovel barrel 20.

[0057] Wherein, in this embodiment, two groups of ejector rods 70 are provided, and two groups of first through holes 205 corresponding to the two groups of ejector rods 70 are provided on the closed end 204 of the shovel barrel 20. The two groups of ejector rods 70 are arranged at intervals and can act on different positions on the push plate 23, facilitating the more uniform ejection force received by the push plate 23.

[0058] Exemplarily, referring to Figure 3 , the upper side of the push plate 23 has an annular guide groove, and the guide groove is slidably sleeved on the sleeve 31. A rib (not shown) is arranged axially at the inner bottom of the shovel barrel 20, and the bottom of the push plate 23 is slidably embedded on the rib. The constraints of the sleeve 31 and the rib can provide guidance for the movement of the push plate 23; and 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.

[0059] The above-mentioned ejector rod 70 can be supported and fixed outside the culvert 11 through an external structure (such as a bracket).

[0060] In one embodiment, considering the on-site operation environment of the dredging of the culvert 11, to improve the convenience of installing the ejector rod 70, referring to Figure 1 、 Figure 2 And Figure 5 , a suspension assembly 50 is further provided. Among them, the suspension assembly 50 includes an insertion assembly 500, a connecting piece 501, a pressing plate 502, a screw 503 and a backing plate 504.

[0061] Wherein, the insertion assembly 500 is inserted into the inner top of the culvert 11 along the mouth of the culvert 11. The insertion assembly 500 has a set of arc-shaped plates, and the arc-shaped plates match the curvature of the culvert 11; several connecting pieces 501 are arranged vertically outside the culvert 11, and the lower ends of the connecting pieces 501 are connected to the insertion assembly 500. The connecting pieces 501 extend upward outside the culvert 11 above the road surface of the road 10. A horizontal pressing plate 502 is provided at the upper end of the connecting piece 501, and at least three groups of screws 503 are screwed on the pressing plate 502. The lower ends of the screws 503 are pressed on the surface of the road 10 through the backing plate 504; by screwing the force-applying rod on the screw 503, the vertical distance between the backing plate 504 and the insertion assembly 500 can be reduced, and the suspension assembly 50 can be firmly fixed between the road 10 and the culvert 11, and the ejector rod 70 is installed on the suspension assembly 50.

[0062] 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 a superior 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. This first notch enables the axial movement of the shovel barrel 20 in the culvert 11 without causing movement interference with the insertion component 500.

[0063] In addition, since the shovel barrel 20 needs to rely on the support of the ejector rod 70 after sliding out of the culvert 11, and one end of the ejector rod 70 close to the culvert 11 is a suspended free end. After long-term use, the free end of the ejector rod 70 will be compressed and inclined downward. To solve the above problems.

[0064] In a preferred embodiment, referring to Figure 3 and Figure 5 , a guiding component 80 located outside the culvert 11 is also horizontally arranged on the suspension component 50. The guiding component 80 is two groups of parallel long rods. One end of the guiding component 80 extends into the culvert 11, and the arc-shaped plate is fixed at the front end of the guiding component 80 to form the aforementioned insertion component 500; the other end of the guiding component 80 is suspended outside the culvert 11. A bracket 60 that can reciprocate axially along the culvert 11 is slidably arranged on the guiding component 80; the lower end of the connecting piece 501 is connected to the middle position of the rod body of the guiding component 80; the first end of the guiding component 80 is connected to the insertion component 500, and the insertion component 500 is supported on the upper inner wall of the culvert 11, making the components such as the ejector rod 70, the fixing frame 700, and the bracket 60 installed at the second end of the guiding component 80 more stable and reliable.

[0065] Among them, the bracket 60 is in the shape of a concave arc plate. The inner diameter of the arc-shaped bracket 60 is the same as the inner diameter of the culvert 11. An elastic member 71 that abuts against the bracket 60 is provided on the ejector rod 70. 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 barrel 20 can smoothly slide into the bracket 60 when being taken out of the culvert 11; it is easy to understand that: when the elastic member 71 is not provided, during the process of the shovel barrel 20 being pulled out, the outer wall surface of the shovel barrel 20 will generate frictional resistance with the inner wall surface of the bracket 60, so that the shovel barrel 20 drives the bracket 60 to move together, and thus the shovel barrel 20 cannot smoothly slide into the bracket 60; by providing the elastic member 71 that abuts against the bracket 60 on the ejector rod 70, 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 frictional resistance between the outer wall surface of the shovel barrel 20 and the inner wall surface of the bracket 60, enabling the shovel barrel 20 to smoothly slide into the bracket 60.

[0066] Among them, in the axial direction of the culvert 11, the bracket 60 has opposite first and second ends. The first end of the bracket 60 is open and abuts against the mouth of the culvert 11, and a limiting plate 600 for restricting the sliding out of the shovel barrel 20 is provided at the second end of the bracket 60; two groups of second through holes 601 coaxial with the two groups of first through holes 205 are provided on the limiting plate 600. After the shovel barrel 20 slides out of the culvert 11, it can be supported by the bracket 60, and the function of the ejector rod 70 is only limited to ejecting the push plate 23.

[0067] Referring to Figure 5 , specifically, one end of the ejector rod 70 is sleeved on the guiding component 80 through a fixing bracket 700, and a nut 701 is threadedly connected to the end of the guiding component 80 to restrict the fixing bracket 700 from sliding out of the guiding component 80; referring to Figure 4 , among which, the first end of the ejector rod 70 is installed on the guiding component 80 through a fixing bracket 700, a sliding sleeve 72 is sleeved on the second end of the ejector rod 70, and the outer diameter of the sliding sleeve 72 is greater than the inner diameter of the second through hole 601; the elastic member 71 is a spring sleeved on the ejector rod 70, and both ends of the spring abut against the fixing bracket 700 and the sliding sleeve 72 respectively, so that the sliding sleeve 72 abuts against the limiting plate 600.

[0068] Referring to Figure 4 , since there is a distance H between the second end of the ejector rod 70 and the limiting plate 600, during the process of driving the bracket 60 to move towards the first end of the ejector rod 70 by the action rod 30, within the range of the distance H, the ejector rod 70 cannot act on the push plate 23, that is, after a certain distance is generated between the bracket 60 and the mouth of the culvert 11, the ejector rod 70 then 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 distance between the bracket 60 and the mouth of the culvert 11, otherwise the silt may remain at the position of the mouth of the culvert.

[0069] Referring to Figure 3 , among which, the shovel barrel 20 includes a shovel barrel body 200 with an inner diameter smaller than that of the culvert 11. A shovel mouth 201 with an outer diameter matching the inner diameter of the culvert 11 is provided at the open end 206 of the shovel barrel body 200, and a guiding frame 22 is provided at the closed end 204 of the shovel barrel body 200. Three groups of rollers 220 in rolling contact with the two side walls and the bottom wall of the inner wall of the culvert 11 are provided on the guiding frame 22. Through the support of the shovel mouth 201 and the guiding frame 22, the axis of the shovel barrel body 200 is coaxial with the axis of the culvert 11.

[0070] In the culvert 11 in some geographical environments, the silt washed in is mostly sandy silt structure, which is extremely easy to loosen and collapse under the scouring of the water flow in the culvert 11. When the shovel bucket 20 shovels into the above-mentioned sandy silt, the water flow on the surface of the silt will flow into the lower layer of sandy silt along the cut seam left by the cutter 21; since the end face of the silt cut by the cutter 21 is a vertical plane, it is easy for the sandy silt shoveled into the shovel bucket 20 (which is close to the open end 206 of the shovel bucket 20) to collapse and break away from the shovel bucket 20 under the soaking of the water flow, affecting the dredging efficiency.

[0071] Therefore, in one embodiment, referring to Figure 3 , a set of second notches extending to the shovel bucket body 200 are provided in the middle of the lower side of the shovel opening 201, and a set of inserts 202 are slidably arranged along the axial direction of the shovel bucket 20 on the second notches. The upper ends of the inserts 202 have a set of force-receiving parts 203. When the inserts 202 slide outward from the shovel opening 201, the water flow can flow into the outside of the shovel bucket body 200 along the gap between the inserts 202 and the second notches. The outer diameter of the shovel bucket body 200 is smaller than the inner diameter of the culvert 11, so that the water flow can be conveniently discharged.

[0072] To achieve the above actions, referring to Figure 3 , an arc-shaped strip 210 arranged around the axis of the shovel bucket 20 is prominently provided on the surface of the cutter 21. The thicknesses on both sides of the arc-shaped strip 210 in the extending direction are lower than the thickness in the middle; during the rotation of the cutter 21, the arc-shaped strip 210 is in sliding contact with the force-receiving part 203. When the arc-shaped strip 210 changes from contacting the force-receiving part 203 at the side to contacting the force-receiving part 203 in the middle, the inserts 202 can be pushed to at least partially slide out of the second notches.

[0073] During the next shoveling of the silt by the inserts 202, the inserts 202 will retract into the second notches of the shovel opening 201 due to the reaction force of the silt.

[0074] Among them, the shovel bucket 20 and the bracket 60 can be processed from an iron sheet oil drum, and the materials are convenient to obtain.

[0075] In addition, in one embodiment, the action rod 30 is a steel pipe, and a tapered head 300 is threadedly connected to one end inserted into the culvert 11. During the insertion of the action rod 30, the tapered head 300 can reduce the resistance of the surface silt of the culvert 11 to the action rod 30; after the dredging is completed, the tapered 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 flow into the culvert 11 for flushing operation to improve the dredging effect.

[0076] In addition, the dredging method of the highway culvert dredging device of the present invention is as follows:

[0077] First, use a hoe to clean the silt at the culvert opening of the culvert 11;

[0078] Then, insert the shovel barrel 20 into the culvert 11, install the suspension assembly 50, and then install structures such as the ejector rod 70 and the bracket 60;

[0079] Next, push the shovel barrel 20 forward through the action rod 30 to shovel silt into the shovel barrel 20, and operate the drive assembly to make the cutting knife 21 cut the silt;

[0080] Finally, pull the shovel barrel 20 out to the bracket 60 through 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 ejector rod 70 contacts and pushes the push plate 23 to eject the silt from the shovel barrel 20.

[0081] Among them, during the process of shoveling silt into the shovel barrel 20 again, the silt can push the push plate 23 to move and reset towards the closed end 204 of the shovel barrel 20.

[0082] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within 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); and also includes a top rod (70) fixedly installed horizontally 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 in 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); and further comprises a suspension assembly (50), the push rod (70) being arranged on the suspension assembly (50), and the suspension assembly (50) comprising: An insertion component (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).

2. The highway culvert dredging device according to claim 1, 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).

3. The highway culvert dredging device according to claim 1, 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).

4. The highway culvert dredging device according to claim 3, 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.

5. The highway culvert dredging device according to claim 4, 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.

6. 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).

7. The highway culvert dredging device according to claim 6, 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.

8. A method for dredging a highway culvert according to claim 3, 4 or 5, 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).

Images