A highway reconstruction and expansion round pipe culvert silt cleaning device

Abstract

The present application relates to the technical field of round pipe culvert silt cleaning, and discloses a highway reconstruction and expansion round pipe culvert silt cleaning device, a silt cleaning disc assembly is installed at the front end of a silt cleaning vehicle body, a middle high-pressure water spraying auger assembly is rotationally arranged at the middle part of the silt cleaning vehicle body, and the front end of the middle high-pressure water spraying auger assembly extends out through the middle part of the silt cleaning disc assembly; the front-end cutter head of the silt cleaning disc assembly cooperates with the gathering and conveying assembly to complete silt stirring, loosening and impurity gathering, so that silt clogging is avoided; the hollow rotating cylinder of the middle high-pressure water spraying auger assembly and the high-pressure water spraying structure realize impurity conveying and auxiliary silt cleaning, finally, the impurities are collected and solid-liquid separation is completed through a filtering collection basket, silt and impurities are effectively prevented from accumulating in the round pipe culvert, and silt and impurities are prevented from causing rapid silt accumulation; an efficient and coherent silt cleaning closed loop is formed, and the problems of low silt cleaning efficiency, incomplete silt cleaning, difficult impurity treatment and the like of the highway round pipe culvert are effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circular pipe culvert silt cleaning, in particular to a highway reconstruction and expansion circular pipe culvert silt cleaning device. BACKGROUND

[0002] As a key part of the drainage system, the highway circular pipe culvert undertakes important tasks such as removing surface water and preventing water damage. Once the silt in the circular pipe culvert accumulates too much, it will seriously affect the drainage capacity, cause surface water, increase the risk of traffic accidents, and even cause damage to the roadbed, shortening the service life of the highway. When the silt is severely blocked, the traditional single mechanical dredging method has poor loosening effect on the silt, low dredging efficiency and high cost. The traditional single high-pressure water flow impact dredging method still leaves impurities such as stones mixed in the silt in the circular pipe culvert, and it is difficult to completely clean up, which will cause the silt to quickly accumulate and block up. Therefore, we introduce a highway reconstruction and expansion circular pipe culvert silt cleaning device. SUMMARY

[0003] The purpose of the present application is to provide a highway reconstruction and expansion circular pipe culvert silt cleaning device to solve the problems raised in the background art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a highway reconstruction and expansion circular pipe culvert silt cleaning device, comprising a dredging vehicle body, a dredging disc assembly is installed at the front end of the dredging vehicle body, a middle high-pressure water jet auger assembly is rotatably arranged at the middle part of the dredging vehicle body, and the front end of the middle high-pressure water jet auger assembly extends out through the middle part of the dredging disc assembly;

[0005] The dredging disc assembly comprises a middle fixed pipe, a front-end cutter head sleeved on the outer side of the front part of the middle fixed pipe, an aggregation and conveying assembly arranged at equal intervals at the front end of the front-end cutter head, a driving assembly arranged at the rear part of the front-end cutter head, and a fixed outer gear ring installed on the outer side of the front part of the middle fixed pipe;

[0006] The front-end cutter head is driven to rotate by a first servo motor at the upper end of the front part of the dredging vehicle body, realizing the stirring of the silt. At the same time, the front-end cutter head drives the aggregation and conveying assembly through the fixed outer gear ring and the driving assembly, so that the aggregation and conveying assembly gathers the impurities in the silt;

[0007] The middle high-pressure water jet auger assembly comprises a hollow rotating cylinder arranged in the middle channel of the middle part of the dredging vehicle body, a spiral blade arranged on the outer wall of the front part of the hollow rotating cylinder, and a water inlet assembly connected to the rear end of the hollow rotating cylinder;

[0008] The hollow rotating cylinder is driven to rotate by a second servo motor at the upper end of the rear part of the dredging vehicle body, transporting the gathered silt and impurities backward.

[0009] Preferably, the rear upper end of the dredging vehicle body is provided with a protective cover covering the second servo motor.

[0010] The rear end of the hollow rotating drum is fixed with a first belt pulley, which is connected with a second belt pulley at the output end of the second servo motor through a belt.

[0011] Preferably, the rear end of the intermediate channel is embedded with a plurality of groups of bearings, which are sleeved on the outer side of the rear end of the hollow rotating drum.

[0012] Preferably, the front end of the hollow rotating drum is provided with a conical sealing head, and the surface of the conical sealing head is provided with a plurality of groups of water injection holes.

[0013] The water inlet assembly comprises a fixed seat fixed at the rear end of the intermediate channel, an insertion pipe provided at the middle of the front end of the fixed seat, and a water inlet hose connected at the middle of the rear end of the fixed seat.

[0014] The insertion pipe is inserted into the middle of the rear end of the hollow rotating drum.

[0015] Preferably, the receiving groove at the rear end of the dredging vehicle body is inserted with a filter collection basket, the bottom of the filter collection basket is provided with a filter groove, the middle of the intermediate channel is provided with a leakage groove, and the leakage groove is communicated with the top of the front end of the receiving groove.

[0016] Preferably, the middle of the front cutter head is provided with an intermediate reserved hole for the front end insertion of the middle fixed pipe, the front end of the front cutter head is provided with a plurality of groups of front inner grooves at equal intervals, and the rear end of the front cutter head is provided with a plurality of groups of rear inner grooves at equal intervals.

[0017] The gathering and conveying assembly comprises an inner side pulley fixed on the inner side of the front inner groove through an inner side shaft, an outer side pulley fixed on the outer side of the front inner groove through an outer side shaft, a conveying belt connected between the inner side pulley and the outer side pulley, and scrapers arranged at equal intervals on the outer side of the conveying belt.

[0018] The driving assembly comprises a first spiral bevel gear fixed at one end of the inner side shaft and extending into the corresponding rear inner groove, a second spiral bevel gear meshed with the first spiral bevel gear, and a planetary gear fixed on the second spiral bevel gear through a rotating shaft.

[0019] The planetary gear is meshed with the outer side of the fixed outer gear ring.

[0020] Preferably, the rear end of the front cutter head is fixed with a first annular end cover, the first annular end cover is sleeved on the outer side of the front end of the middle fixed pipe, and the first spiral bevel gear and the second spiral bevel gear are sealed in the corresponding rear inner groove.

[0021] The front end of the first annular end cover is fixed with a plurality of groups of limiting cylinders at equal intervals, and the rear end of the first annular end cover is further provided with an annular cylinder seat, and the rotating shaft is fixedly connected with the planetary gear after extending into the inner part of the annular cylinder seat through the corresponding limiting cylinder.

[0022] Preferably, the rear end of the annular cylinder seat is fixed with a second annular end cover, which is sleeved on the rear outer side of the middle fixed pipe to seal the fixed outer gear ring and the planetary gear in the annular cylinder seat.

[0023] Preferably, the rear end of the second annular end cover is fixed with a protective cylinder seat, and the rear outer side of the protective cylinder seat is provided with a driving gear ring;

[0024] The front upper end of the dredging vehicle body is provided with a protective shell for protecting the first servo motor, and the output end of the first servo motor is connected with a driving gear which is engaged with the outer top of the driving gear ring;

[0025] The protective cylinder seat is further provided with a fixed internal thread disc which is screwed and fixed on the rear outer side of the middle fixed pipe;

[0026] The front end outer side of the middle channel is fixed with a mounting ring by using a plurality of groups of connecting blocks which are distributed at equal intervals, and the mounting ring is fixed on the rear end of the fixed internal thread disc.

[0027] Preferably, the rear end of the middle fixed pipe is inserted into the inner front side of the middle channel, and the hollow rotating cylinder protrudes out through the middle fixed pipe.

[0028] Compared with the prior art, the beneficial effects of the present application are:

[0029] The front end cutter head of the dredging disc assembly cooperates with the gathering and conveying assembly to complete the sludge stirring and loosening and impurity gathering, so as to avoid sludge blockage; the hollow rotating cylinder of the middle high-pressure water spraying auger assembly and the high-pressure water spraying structure realize impurity conveying and auxiliary dredging, and finally the filter collection basket completes impurity collection and solid-liquid separation, effectively preventing sludge and impurities from accumulating in the circular pipe culvert and causing rapid accumulation of sludge and impurities.

[0030] The precise transmission of power between each component is realized through gear transmission, belt transmission, pipeline connection and the like, forming an efficient and continuous dredging operation closed loop, which effectively solves the problems of low efficiency, incomplete dredging and difficult impurity treatment of the circular pipe culvert of the expressway. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0032] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present application; Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0033] Figure 3 It is a schematic diagram of the overall three-dimensional structure of the present application; Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0034] Figure 4 Assembled structure diagram of the dredging disc assembly and the dredging vehicle body of the present application;

[0035] Figure 5 Three-dimensional structure diagram of the whole dredging disc assembly of the present application;

[0036] Figure 6 Exploded structure diagram of the whole dredging disc assembly of the present application;

[0037] Figure 7 Structure diagram of the connection between the first spiral bevel gear and the second spiral bevel gear of the present application;

[0038] Figure 8 Structure diagram of the setting of the outer pulley and the inner pulley of the present application;

[0039] Figure 9 Three-dimensional structure diagram of the present application Figure 6 Three-dimensional structure diagram of the present application

[0040] Figure 10 Structure diagram of the assembly of the gathering and conveying assembly and the front-end cutterhead of the present application;

[0041] Figure 11 Structure diagram of the connection between the planetary gear and the fixed outer gear ring of the present application;

[0042] Figure 12 Structure diagram of the installation of the second servo motor and the first servo motor of the present application;

[0043] Figure 13 Three-dimensional structure diagram of the assembly of the middle high-pressure water jet auger assembly and the dredging vehicle body of the present application;

[0044] Figure 14 Three-dimensional structure diagram of the present application Figure 13 Three-dimensional structure diagram of the present application

[0045] Figure 15 Three-dimensional structure diagram of the present application Figure 5 Three-dimensional structure diagram of the present application

[0046] Figure 16 Three-dimensional structure diagram of the present application Figure 2 Three-dimensional structure diagram of the present application

[0047] In the figure: 1, dredging vehicle body; 2, walking wheels; 3, filter collection basket; 4, water inlet hose; 5, fixing seat; 6, protective cover; 7, protective shell; 8, driving gear ring; 9, protective cylinder seat; 10, second annular end cover; 11, first annular end cover; 12, front end cutter head; 13, hollow rotating drum; 14, gathering and conveying assembly; 141, outer pulley; 142, conveying belt; 143, scraper; 144, inner pulley; 15, filter groove; 16, middle fixed pipe; 17, fixed internal threaded disc; 18, annular cylinder seat; 19, planetary gear; 20, fixed external gear ring; 21, rear inner groove; 22, first spiral bevel gear; 23, second spiral bevel gear; 24, rotating shaft; 25, scraper; 26, front inner groove; 27, middle reserved hole; 28, second servo motor; 29, second pulley; 30, belt; 31, first servo motor; 32, connecting block; 33, mounting ring; 34, spiral blade; 35, water spraying hole; 36, first pulley; 37, leakage groove; 38, bearing; 39, middle channel; 40, limiting cylinder; 41, driving gear; 42, plug-in pipe. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0049] Embodiment:

[0050] Please refer to Figures 1-16 The present application provides a technical solution:

[0051] The highway reconstruction and expansion round pipe culvert silt cleaning device, including dredging vehicle body 1, the bottom of dredging vehicle body 1 is equipped with walking wheels 2, the highway reconstruction and expansion round pipe culvert silt cleaning device takes dredging vehicle body 1 as the main body load bearing structure of the whole equipment, the walking wheels 2 installed at the bottom of dredging vehicle body 1, so that the device can move freely in the highway round pipe culvert, flexibly reaches the position needing dredging. This mobility greatly improves the efficiency of dredging work, compared with the traditional fixed dredging equipment, without the need for cumbersome handling and reinstallation, saving a lot of time and labor cost.

[0052] The front end of the dredging vehicle body 1 is provided with a dredging disc assembly, and the middle part of the dredging vehicle body 1 is provided with a middle high-pressure water spraying auger assembly, and the front end of the middle high-pressure water spraying auger assembly is extended through the middle part of the dredging disc assembly;

[0053] The dredging disc assembly comprises a middle fixed tube 16, a front end cutter head 12 sleeved on the front outer side of the middle fixed tube 16, a plurality of gathering and conveying assemblies 14 arranged at equal intervals on the front end surface of the front end cutter head 12, a driving assembly arranged on the rear part of the front end cutter head 12, and a fixed outer gear ring 20 mounted on the front outer side of the middle fixed tube 16;

[0054] The front end surface of the front end cutter head 12 is further provided with a scraper 25.

[0055] The front end cutter head 12 is driven to rotate by a first servo motor 31 arranged on the front upper end of the dredging vehicle body 1, so as to realize stirring of the sludge. Meanwhile, the front end cutter head 12 drives the gathering and conveying assemblies 14 through the fixed outer gear ring 20 and the driving assembly, so that the gathering and conveying assemblies 14 gather the impurities in the sludge.

[0056] The middle part of the front end cutter head 12 is provided with an intermediate reserved hole 27 for insertion of the front end of the middle fixed tube 16. A plurality of groups of front inner grooves 26 are arranged at equal intervals on the front end of the front end cutter head 12. A plurality of groups of rear inner grooves 21 are arranged at equal intervals on the rear end of the front end cutter head 12.

[0057] The gathering and conveying assembly 14 comprises an inner side pulley 144 fixed by an inner side shaft on the inner side of the front inner groove 26, an outer side pulley 141 fixed by an outer side shaft on the outer side of the front inner groove 26, a conveying belt 142 connected between the inner side pulley 144 and the outer side pulley 141, and a scraper 143 arranged at equal intervals on the outer side of the conveying belt 142.

[0058] The driving assembly comprises a first spiral bevel gear 22 fixed by insertion of one end of an inner side shaft into the corresponding rear inner groove 21, a second spiral bevel gear 23 engaged with the first spiral bevel gear 22, and a planetary gear 19 fixed by a rotating shaft 24 on the middle part of the second spiral bevel gear 23.

[0059] The planetary gear 19 is engaged with the outer side of the fixed outer gear ring 20.

[0060] The rear end of the front end cutter head 12 is fixed with a first annular end cover 11, which is sleeved on the front end outer side of the middle fixed tube 16, so as to seal the first spiral bevel gear 22 and the second spiral bevel gear 23 in the corresponding rear inner groove 21.

[0061] This structure effectively prevents the sludge and sewage in the dredging process from entering the inside of the driving assembly, and avoids the problems of corrosion and jamming of these components due to pollution. As a key part of the dredging disc assembly for realizing power transmission and impurity gathering, the normal operation of the driving assembly is very important. The sealing effect of the first annular end cover 11 creates a good environment for stable operation of the driving assembly.

[0062] The front end cutter head 12 is provided with a lubricating oil nozzle communicated with the rear inner groove 21, through which lubricating oil is injected into the rear inner groove 21 to lubricate the first spiral bevel gear 22 and the second spiral bevel gear 23.

[0063] The front end of the first annular end cover 11 is fixed with a plurality of groups of limiting cylinders 40 at equal intervals, and the rear end of the first annular end cover 11 is further provided with an annular cylinder seat 18, the rotating shaft 24 is fixedly connected with the planetary gear 19 after penetrating into the inside of the annular cylinder seat 18 via the corresponding limiting cylinder 40.

[0064] The rear end of the annular cylinder seat 18 is fixed with a second annular end cover 10, which is sleeved on the rear outer side of the middle fixed pipe 16, sealing the fixed outer gear ring 20 and the planetary gear 19 in the annular cylinder seat 18. It also plays a role in preventing external pollutants from entering, ensuring the normal meshing and transmission between the fixed outer gear ring 20 and the planetary gear 19. During the dredging operation, if impurities enter this area, it may cause the gap between the gears to become smaller, increase the friction, or even cause the planetary gear 19 to be stuck, and the presence of the second annular end cover 10 effectively avoids these problems.

[0065] The annular cylinder seat 18 is also provided with a lubricating oil nozzle, through which lubricating oil is injected into the annular cylinder seat 18 to lubricate the fixed outer gear ring 20 and the planetary gear 19.

[0066] The rear end of the second annular end cover 10 is fixed with a protective cylinder seat 9, and the rear outer side of the protective cylinder seat 9 is provided with a driving gear ring 8;

[0067] The front upper end of the dredging vehicle body 1 is provided with a protective shell 7 for protecting the first servo motor 31, and the output end of the first servo motor 31 is connected with a driving gear 41 which is engaged with the outer top of the driving gear ring 8;

[0068] The protective cylinder seat 9 is further provided with a fixed internal threaded disc 17 which is screwed and fixed on the rear outer side of the middle fixed pipe 16;

[0069] The front outer side of the middle passage 39 is fixed with a mounting ring 33 by a plurality of groups of equally spaced connection blocks 32, and the mounting ring 33 is fixed on the rear end of the fixed internal threaded disc 17, which can realize the fixation of the middle fixed pipe 16.

[0070] The rear end of the middle fixed pipe 16 is inserted into the inside of the front side of the middle passage 39, and the front end of the hollow rotating cylinder 13 penetrates and extends out via the middle fixed pipe 16.

[0071] After the dredging operation starts, the first servo motor 31 located at the upper end of the front part of the dredging vehicle body 1 starts to operate (the outside is protected by the protective shell 7 to avoid mud pollution of the motor). The drive gear 41 connected to the output end of the first servo motor 31 is engaged with the drive gear ring 8 on the outside of the rear end of the protective cylinder seat 9, and the power is transmitted to the protective cylinder seat 9 through gear transmission. Since the protective cylinder seat 9 is fixedly connected with the front cutter head 12 through the annular cylinder seat 18, the second annular end cover 10 and other structures, the power finally drives the front cutter head 12 to rotate around the middle fixed pipe 16.

[0072] The scraper 25 arranged on the front end surface of the front cutter head 12 rotates synchronously with the cutter head, directly contacts with the mud in the circular pipe culvert, and disperses the caked and viscous mud through mechanical cutting and stirring, so that the mud is in a loose state. When the outer diameter of the front cutter head 12 is slightly smaller than the diameter of the inner wall of the circular pipe culvert, the stubborn mud layer adhered to the inner wall of the circular pipe culvert can also be scraped off, which creates favorable conditions for subsequent impurity separation and conveying.

[0073] While the front cutter head 12 rotates, the drive assembly and the gathering and conveying assembly 14 inside the front cutter head 12 work cooperatively to realize the central gathering of impurities in the mud. The specific transmission path is as follows:

[0074] Transmission of power from the front cutter head 12 to the drive assembly: when the front cutter head 12 rotates, the first spiral bevel gear 22 in the rear inner groove 21 will move in a circular motion around the middle fixed pipe 16, and the planetary gear 19 will produce a rotation due to the engagement with the fixed outer gear ring 20 (the fixed outer gear ring 20 is fixed), and the rotation power is transmitted to the second spiral bevel gear 23 through the rotating shaft 24.

[0075] Transmission of power from the drive assembly to the gathering and conveying assembly: after the second spiral bevel gear 23 rotates, the rotation power is transmitted to the first spiral bevel gear 22 through the engagement of the first spiral bevel gear 22 and the second spiral bevel gear 23, which drives the first spiral bevel gear 22 and the inner shaft to rotate, and then drives the inner side pulley 144 in the front inner groove 26 to rotate. The inner side pulley 144 and the outer side pulley 141 are connected through the conveying belt 142, and the rotation of the inner side pulley 144 drives the conveying belt 142 to move circularly around the inner side pulley 144 and the outer side pulley 141.

[0076] Central gathering process of impurities: the scrapers 143 arranged at equal intervals on the outside of the conveying belt 142 move synchronously with the conveying belt, and since multiple gathering and conveying assemblies 14 are distributed at equal intervals in front of the front cutter head 12, and the movement direction of each conveying belt 142 is towards the center of the front cutter head 12, the scrapers 143 will push the branches, stones, plastics and other impurities in the dispersed mud towards the middle of the cutter head, and finally realize the central gathering of impurities, which accurately positions the impurity position for the subsequent conveying operation of the middle high-pressure water jet auger assembly.

[0077] When the conveying belt 142 rotates, it can also loosen the sludge, and in combination with the rotation of the front cutter head 12, it can prevent the sludge from being blocked.

[0078] The middle high-pressure water jet auger assembly comprises a hollow rotating cylinder 13 arranged in the middle passage 39 of the middle part of the dredging vehicle body 1, spiral blades 34 arranged on the outer wall of the front part of the hollow rotating cylinder 13, and a water inlet assembly connected to the rear end of the hollow rotating cylinder 13.

[0079] The hollow rotating cylinder 13 is driven to rotate by the second servo motor 28 at the upper end of the rear part of the dredging vehicle body 1, and the gathered sludge impurities are transported backward.

[0080] The upper end of the rear part of the dredging vehicle body 1 is provided with a protective cover 6 covering the outside of the second servo motor 28.

[0081] The rear end of the hollow rotating cylinder 13 is fixed with a first pulley 36, and the first pulley 36 is connected with a second pulley 29 at the output end of the second servo motor 28 through a belt 30.

[0082] When the second servo motor 28 at the upper end of the rear part of the dredging vehicle body 1 is started (the outside is protected by the protective cover 6 to isolate external pollution), the second pulley 29 at the output end of the second servo motor 28 is connected with the first pulley 36 at the rear end of the hollow rotating cylinder 13 through the belt 30, and power is transmitted to the hollow rotating cylinder 13 through belt transmission.

[0083] The rear part of the middle passage 39 is embedded with a plurality of bearings 38, and the bearings 38 are sleeved on the rear part of the hollow rotating cylinder 13. This not only ensures the stable rotation of the hollow rotating cylinder 13, but also reduces the friction resistance in the rotation process.

[0084] The front end of the hollow rotating cylinder 13 penetrates and extends through the middle fixed pipe 16, and is accurately aligned with the impurity area gathered by the dredging disc assembly. The spiral blades 34 on the outer wall of the front part of the hollow rotating cylinder 13 rotate synchronously with the rotating cylinder, and the sludge impurities gathered in the middle of the front end are transported backward through the helical angle of the spiral blades 34, so that the impurities move gradually along the middle passage 39 to the rear part of the dredging vehicle body 1, realizing directional transportation of the impurities.

[0085] The front end of the hollow rotating cylinder 13 is provided with a conical sealing head, and the surface of the conical sealing head is provided with a plurality of water injection holes 35.

[0086] The water inlet assembly comprises a fixed seat 5 fixed at the rear end of the middle passage 39, a plug-in pipe 42 arranged at the middle part of the front end of the fixed seat 5, and a water inlet hose 4 connected to the middle part of the rear end of the fixed seat 5.

[0087] The plug-in pipe 42 is inserted into the middle part of the rear end of the hollow rotating cylinder 13.

[0088] In the process of impurity transportation, the water inlet assembly synchronously provides high-pressure water flow to assist dredging: the water inlet hose 4 introduces an external high-pressure water source into the insertion pipe 42, which is inserted into the middle part of the rear end of the hollow rotating drum 13, so that the high-pressure water enters the hollow chamber inside the hollow rotating drum 13. Since the front end of the hollow rotating drum 13 is provided with a conical sealing head, and the surface of the sealing head is provided with a plurality of groups of water injection holes 35, the high-pressure water will be injected to the surrounding through the water injection holes 35.

[0089] The filter collection basket 3 is inserted into the containing groove at the rear of the dredging vehicle body 1, the bottom of the filter collection basket 3 is provided with a filter groove 15, the middle part of the middle channel 39 is provided with a leakage groove 37, and the leakage groove 37 is in communication with the top of the front end of the containing groove.

[0090] The filter collection basket 3 plays an important role in collecting silt impurities (branches, stones, etc.) in the entire dredging device, and its working principle is based on the ingenious cooperation with the middle channel 39. The bottom of the filter collection basket 3 is provided with a filter groove 15, and the middle part of the middle channel 39 is provided with a leakage groove 37, which is in communication with the top of the front end of the containing groove. When the silt impurities are transported by the middle high-pressure water jet auger assembly and move backward through the middle channel 39, they reach the leakage groove 37 position, and due to the action of gravity, the silt impurities will fall into the filter collection basket 3 below from the leakage groove 37. The existence of the filter groove 15 enables water to flow out of the filter groove 15 during the collection process, while the silt impurities are intercepted in the filter collection basket 3, realizing the preliminary separation of solid and liquid.

[0091] This design not only improves the collection efficiency of silt impurities, but also makes the collected silt impurities more convenient for subsequent processing.

[0092] Specifically, in use:

[0093] The dredging disc assembly, as the pioneer of dredging work, plays a crucial role in the entire dredging process. Its function of stirring silt is mainly completed by the first servo motor 31 and the front cutterhead 12.

[0094] The first servo motor 31 is installed on the front upper end of the dredging vehicle body 1, and the first servo motor 31 is controlled by the PLC built-in the dredging vehicle body 1, which can accurately control the output torque and speed of the first servo motor 31. When the first servo motor 31 is started, it drives the front cutterhead 12 to rotate.

[0095] The front-end cutterhead 12, in the process of rotation, acts like a powerful mixer to stir the silt in the pipe culvert. Its unique structural design makes the stirring effect more significant. The disc surface of the front-end cutterhead 12 is provided with a scraper 25, so that the front-end cutterhead 12 can more effectively break up the silt when rotating. Under the stirring of the front-end cutterhead 12, the originally tightly packed structure of the silt is destroyed and becomes loose, laying a good foundation for subsequent cleaning work. Compared with the traditional dredging method, this stirring method can more deeply act on the inside of the silt, fully stirring the deep silt, greatly improving the thoroughness of dredging.

[0096] In addition to stirring the silt, the dredging disc assembly also shoulders the heavy responsibility of gathering impurities in the silt. The realization of this function relies on the clever cooperation between the front-end cutterhead 12, the fixed outer gear ring 20, the driving assembly, and the gathering and conveying assembly 14.

[0097] The front-end cutterhead 12, in the process of rotation, acts like a powerful mixer to stir the silt in the pipe culvert. Its unique structural design makes the stirring effect more significant. The disc surface of the front-end cutterhead 12 is provided with a scraper 25, so that the front-end cutterhead 12 can more effectively break up the silt when rotating. Under the stirring of the front-end cutterhead 12, the originally tightly packed structure of the silt is destroyed and becomes loose, laying a good foundation for subsequent cleaning work. Compared with the traditional dredging method, this stirring method can more deeply act on the inside of the silt, fully stirring the deep silt, greatly improving the thoroughness of dredging.

[0098] The compound motion of the planetary gear 19 is transmitted to the second spiral bevel gear 23 through the rotating shaft 24, and the second spiral bevel gear 23 meshes with the first spiral bevel gear 22, thereby driving the first spiral bevel gear 22 to rotate. The first spiral bevel gear 22 is fixed at one end of the inner shaft, and the inner shaft drives the inner belt pulley 144 to rotate.

[0099] The inner belt pulley 144 and the outer belt pulley 141 of the gathering and conveying assembly 14 are connected by a conveying belt 142. When the inner belt pulley 144 rotates, the conveying belt 142 moves accordingly, and the scraper 143 arranged at equal intervals on the outer side of the conveying belt 142 also moves. The scraper 143 continuously gathers impurities in the silt during the movement.

[0100] This unique design allows impurities to be concentrated in a smaller area, making it easier for the subsequent central high-pressure water jet auger assembly to clean and transport. By gathering impurities, the impurities are prevented from scattering during the dredging process, improving the efficiency and targeting of the dredging process, reducing missed points, and making the dredging effect more ideal.

[0101] The central high-pressure water jet auger assembly plays a key role in transporting the dredging products in the entire dredging device, and its function of transporting silt and impurities mainly relies on the second servo motor 28, the hollow rotating drum 13, and the spiral blade 34.

[0102] The second servo motor 28 is installed on the upper end of the rear part of the dredging vehicle body 1, and it is the power source for the rotation of the hollow rotating drum 13. The second servo motor 28 is controlled by the PLC built in the dredging vehicle body 1, and it has high-precision speed control capability, which can accurately adjust the rotation speed of the hollow rotating drum 13 according to the actual needs of the dredging work. When the second servo motor 28 starts, the second pulley 29 at its output end begins to rotate, which drives the first pulley 36 to rotate through the transmission of the belt 30, and then drives the hollow rotating drum 13 to rotate at high speed around its own axis.

[0103] The spiral blade 34 provided on the outer wall of the front part of the hollow rotating drum 13 is the core component for transporting silt impurities. When the hollow rotating drum 13 rotates, the spiral blade 34 rotates with it, like a spiral propeller. The silt impurities gathered to the middle part by the dredging disc assembly are moved backward along the axial direction of the hollow rotating drum 13 under the pushing of the spiral blade 34. The pitch and blade shape of the spiral blade 34 are carefully designed to provide sufficient thrust to ensure that the silt impurities can be stably and efficiently transported backward.

[0104] This transportation method has stronger adaptability and reliability compared to the traditional direct suction method. It can effectively avoid the blockage problem caused by the viscosity and uneven particle size of the silt impurities, and ensure the continuity and efficiency of the dredging work. At the same time, by controlling the rotation speed of the second servo motor 28, the transportation speed of the silt impurities can be flexibly adjusted to adapt to different dredging conditions.

[0105] The high-pressure water jet function of the middle high-pressure water jet auger assembly provides strong auxiliary force for the dredging work, which can further improve the effect and quality of dredging. The realization of this function depends on the water inlet assembly, the hollow rotating drum 13 and the conical sealing head.

[0106] The water inlet assembly includes a fixed seat 5 fixed at the rear end of the middle channel 39, a plug-in pipe 42 provided at the middle part of the front end of the fixed seat 5, and a water inlet hose 4 connected to the middle part of the rear end of the fixed seat 5. The rear end of the water inlet hose 4 is connected to an external water source through a high-pressure water pump, which is controlled by the PLC built in the dredging vehicle body 1 to introduce water into the plug-in pipe 42. The plug-in pipe 42 is inserted into the middle part of the rear end of the hollow rotating drum 13, so that water can smoothly enter the inside of the hollow rotating drum 13.

[0107] The front end of the hollow rotating drum 13 is provided with a conical sealing head, and the surface of the conical sealing head is provided with a plurality of groups of water jet holes 35. When water enters the hollow rotating drum 13, it is sprayed out in the form of high-pressure water flow through the water jet holes 35 under the action of pressure. These high-pressure water flows have strong impact force and can wash the silt in the circular pipe culvert;

[0108] Since the front end of the hollow rotating drum 13 is at the front end of the entire device, the high-pressure water jet sprayed through the front end of the hollow rotating drum 13 first impacts the sludge, which is then wetted and diluted, the viscosity of the sludge is reduced, and the sludge is initially loosened, which facilitates the subsequent rotation and stirring of the sludge by the front cutter head 12. Subsequently, the high-pressure water jet further strips the sludge and impurities attached to the wall of the circular pipe culvert, making the dredging more thorough.

[0109] At the same time, wetting and diluting the sludge can reduce the adhesion of the sludge on the inner wall of the hollow rotating drum 13 and the spiral blade 34, prevent clogging, and ensure that the sludge and impurities can be smoothly transported backward.

[0110] This combination of high-pressure water jet and spiral conveying allows the middle high-pressure water jet auger assembly to have dual functions during the dredging process, greatly improving the overall performance and dredging efficiency of the dredging device.

[0111] Most of the sludge diluted by the high-pressure water jet flows out along the circular pipe culvert.

[0112] The surface of the hollow rotating drum 13 is also provided with water spray holes 35, so that the water jet sprayed through the water spray holes 35 on the surface of the hollow rotating drum 13 can dilute the sludge entering the middle channel 39, so that after the sludge enters the filter collection basket 3, the sludge can flow out through the filter tank 15.

[0113] Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sludge removal device for circular culverts during highway reconstruction and expansion, comprising a sludge removal vehicle body (1), characterized in that: The front end of the dredging vehicle body (1) is equipped with a dredging disc assembly, and the middle part of the dredging vehicle body (1) is rotatably equipped with a middle high-pressure water jet auger assembly, the front end of the middle high-pressure water jet auger assembly extending through the middle of the dredging disc assembly. The sludge removal plate assembly includes a central fixed tube (16), a front cutter disc (12) sleeved on the outer side of the front part of the central fixed tube (16), a gathering and conveying assembly (14) evenly spaced at the front end of the front cutter disc (12), a driving assembly at the rear of the front cutter disc (12), and a fixed external toothed ring (20) installed on the outer side of the front part of the central fixed tube (16). The front cutter disc (12) is driven to rotate by the first servo motor (31) at the upper front of the dredging vehicle body (1) to stir the sludge. At the same time, the front cutter disc (12) drives the gathering and conveying assembly (14) through the fixed outer toothed ring (20) and the driving assembly, so that the gathering and conveying assembly (14) gathers the impurities in the sludge in the center. The central high-pressure water jet auger assembly includes a hollow rotating cylinder (13) installed in the middle channel (39) in the middle of the dredging vehicle body (1), a spiral blade (34) installed on the outer wall of the front part of the hollow rotating cylinder (13), and a water inlet assembly connected to the rear end of the hollow rotating cylinder (13). The hollow rotary drum (13) is driven to rotate by the second servo motor (28) at the upper rear of the dredging vehicle body (1), which transports the collected sludge and impurities to the rear. The front cutter head (12) is provided with a middle reserved hole (27) for the insertion of the front end of the middle fixed tube (16). The front end of the front cutter head (12) is provided with a number of front inner grooves (26) at equal intervals, and the rear end of the front cutter head (12) is provided with a number of rear inner grooves (21) at equal intervals. The gathering and conveying assembly (14) includes an inner pulley (144) fixed on the inner side of the front inner groove (26) by an inner shaft, an outer pulley (141) fixed on the outer side of the front inner groove (26) by an outer shaft, a conveyor belt (142) connecting the inner pulley (144) and the outer pulley (141), and scrapers (143) evenly spaced on the outer side of the conveyor belt (142). The drive assembly includes a first spiral bevel gear (22) with one end of the inner shaft extending into the corresponding rear inner groove (21) and fixed thereon, a second spiral bevel gear (23) meshing with the first spiral bevel gear (22), and a planetary gear (19) fixed in the middle of the second spiral bevel gear (23) by a rotating shaft (24). The planetary gear (19) meshes with the outer side of the fixed external gear ring (20); The rear end of the front cutter head (12) is fixed with a first annular end cap (11). The first annular end cap (11) is sleeved on the outer side of the front end of the middle fixed tube (16) to seal the first spiral bevel gear (22) and the second spiral bevel gear (23) in the corresponding rear inner groove (21). The front end of the first annular end cap (11) is fixed with several sets of limiting cylinders (40) at equal intervals. The rear end of the first annular end cap (11) is also provided with an annular cylinder seat (18). The rotating shaft (24) extends into the annular cylinder seat (18) through the corresponding limiting cylinder (40) and is then fixedly connected to the planetary gear (19).

2. The sludge removal device for circular culverts during highway reconstruction and expansion according to claim 1, characterized in that: The upper rear part of the dredging vehicle body (1) is provided with a protective cover (6) covering the outside of the second servo motor (28). The hollow rotating drum (13) has a first pulley (36) fixed on the outer rear end. The first pulley (36) is connected to the second pulley (29) at the output end of the second servo motor (28) via a belt (30).

3. The sludge removal device for circular culverts during highway reconstruction and expansion according to claim 1, characterized in that: Several sets of bearings (38) are embedded in the rear of the intermediate channel (39), and the bearings (38) are sleeved on the outer rear of the hollow rotating cylinder (13).

4. The sludge removal device for circular culverts during highway reconstruction and expansion according to claim 1, characterized in that: The front end of the hollow rotating drum (13) is provided with a conical sealing head, and the surface of the conical sealing head is provided with several sets of water spray holes (35). The water inlet assembly includes a fixed base (5) fixed at the rear end of the intermediate channel (39), a plug pipe (42) provided at the middle of the front end of the fixed base (5), and a water inlet hose (4) connected at the middle of the rear end of the fixed base (5). The insertion tube (42) is inserted into the middle of the rear end of the hollow rotating cylinder (13).

5. A sludge removal device for circular culverts during highway reconstruction and expansion according to claim 1, characterized in that: A filter collection basket (3) is inserted into the receiving slot at the rear of the dredging vehicle body (1). A filter slot (15) is provided at the bottom of the filter collection basket (3). A trough (37) is provided in the middle of the middle channel (39). The trough (37) is connected to the top of the front end of the receiving slot.

6. A sludge removal device for circular culverts during highway reconstruction and expansion according to claim 1, characterized in that: The rear end of the annular cylindrical seat (18) is fixed with a second annular end cap (10). The second annular end cap (10) is sleeved on the outer rear part of the middle fixing tube (16) to seal the fixing external gear ring (20) and planetary gear (19) inside the annular cylindrical seat (18).

7. A sludge removal device for circular culverts during highway reconstruction and expansion according to claim 6, characterized in that: The rear end of the second annular end cap (10) is fixed with a protective cylinder seat (9), and a drive toothed ring (8) is provided on the outer side of the rear end of the protective cylinder seat (9). The upper front end of the dredging vehicle body (1) is provided with a protective shell (7) for protecting the first servo motor (31). The output end of the first servo motor (31) is connected to a drive gear (41), which meshes with the top outer side of the drive gear ring (8). The protective sleeve (9) is also provided with a fixed internal threaded disc (17) that is screwed to the outer side of the rear of the middle fixed tube (16). The front side of the intermediate channel (39) is fixed with a mounting ring (33) by a number of equally spaced connecting blocks (32), and the mounting ring (33) is fixed to the rear end of the fixed internal threaded disc (17).

8. A sludge removal device for circular culverts during highway reconstruction and expansion according to claim 1, characterized in that: The rear end of the central fixing tube (16) is inserted into the front side of the interior of the middle channel (39), and the front end of the hollow rotating cylinder (13) extends through the central fixing tube (16).

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