CN111945501A - Improved intelligent stone-avoiding device for turning over and drying bad fillers in case of over-wet embankment and use method thereof - Google Patents

Abstract

The invention discloses an improved intelligent stone avoiding device for turning over and baking bad fillers in an embankment due to over-wet condition and a using method thereof, wherein the improved intelligent stone avoiding device comprises a box body, the front end of a hollow spiral drill bit extends out of the box body, the rear end of the spiral drill bit is in transmission connection with an output shaft of a motor through a driving unit, an internal cavity of the spiral drill bit is communicated with an outlet of a heating tube bundle, a drill body of the spiral drill bit is uniformly provided with a plurality of small holes, and a material conveying pipe for conveying an improved water absorbent is communicated with the; the driving unit is connected with the inner wall of the box body in a sliding mode, the telescopic head of the elevator is connected with the top of the box body, the end face, away from the spiral drill bit, of the driving unit is provided with a spring, a stress surface of the spring is provided with a pressure sensor, and the pressure sensor is electrically connected with the elevator through a controller. The invention integrates the functions of soil turning, drying, filler improvement and automatic stone avoiding, has reasonable structure, convenient operation and low cost, can quickly reduce the water content of over-wet soil, and simultaneously improves the embankment filler and intelligently avoids stones.

Description

Improved intelligent stone-avoiding device for turning over and drying bad fillers in case of over-wet embankment and use method thereof

Technical Field

The invention belongs to the field of geotechnical engineering and the technical field of embankment engineering, and relates to an intelligent stone-avoiding device for turning over and drying improved bad fillers when an embankment is over wet and a using method thereof.

Background

One of the hot problems in geotechnical engineering research is the compacted filling of poor filler when the embankment is too wet. In recent years, in coastal rainy areas, the rainfall frequency is high, the rainfall is large, and embankment fillers are often in an over-wet state, so that the embankment has low bearing capacity, poor stability and easy deformation, and the phenomenon of 'spring' is easy to occur during construction and is difficult to compact: the soil with liquid limit of more than 50 and plasticity index of more than 26, which is required by the embankment construction technical Specification for highway embankment (JTJ 033-95) in special areas, cannot be used as embankment filler. If it is difficult to obtain high-quality embankment filler and poor embankment filler is needed, additive can be added to improve soil quality. In addition, under the action of humus, expansive mineral substances, salt and other components in the over-wet poor filler, the embankment filled with the embankment over-wet poor filler such as organic soil, saline soil, loess, expansive soil and the like is easy to sink and deform unevenly after a period of operation.

In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:

1. according to the current embankment design rule, because the over-wet embankment filler cannot meet the compaction requirement, the treatment can only be performed on a abandoning side, however, the high-quality embankment filler is lacked in rainy areas, the treatment by adopting a filling changing mode is labor-consuming and time-consuming, and the construction cost is increased. For the treatment and utilization of over-wet soil, a plurality of treatment methods are proposed in the engineering circles at home and abroad, and for the over-wet soil, a method of airing or direct filling replacement is generally adopted. In coastal areas, the rainfall frequency is high, the precipitation amount is large, the airing method is greatly influenced by the weather, and the project cost is increased by the replacement method. At present, except an airing method and a filling and replacement method, no economical and effective treatment and utilization method for the over-wet soil embankment exists in domestic and foreign engineering communities. Therefore, how to effectively dry the poor filler which is deeply over-wet in the embankment is the first question to be researched.

2. The embankment scarification process is an indispensable process of embankment construction, a series of machines are arranged for embankment scarification at present, but the general problem that faces is one, hard large stones are easy to encounter in the scarification process, the hard bones can cause damage to the scarification machines, particularly drill bits or serrated knives for scarification and the like, so that the scarification efficiency is low, a large amount of maintenance cost is needed, and therefore, in order to enable the soil filling and scarification process to be more efficient and economical, the problem that how to design a device capable of effectively avoiding stones is the second problem which is worthy of research is solved.

Disclosure of Invention

In order to solve the problems, the invention provides an improved intelligent stone-avoiding device for turning over and drying poor fillers in an over-wet embankment, which integrates the functions of turning soil, drying, improving fillers and automatically avoiding stones into a whole, has the advantages of reasonable structure, convenient operation and low cost, can quickly reduce the water content of over-wet soil, can turn soil, improve and intelligently avoid stones in the embankment fillers, and solves the problems in the prior art.

The invention also aims to provide a using method of the improved intelligent stone-avoiding device for turning over and drying the bad fillers when the embankment is too wet.

The invention adopts the technical scheme that the improved intelligent stone avoiding device for turning over and drying the poor filler in the case of the excessive wet embankment comprises a box body, wherein the front end of a hollow spiral drill bit extends out of the box body, the rear end of the spiral drill bit is in transmission connection with an output shaft of a motor through a driving unit, an internal cavity of the spiral drill bit is communicated with an outlet of a heating tube bundle, the flow rate of hot air in the heating tube bundle is 8-12m/s, a drill body of the spiral drill bit is uniformly provided with a plurality of small holes, and a material conveying pipe for conveying the improved water absorbent is communicated with the heating tube bundle; the driving unit is connected with the inner wall of the box body in a sliding mode, the telescopic head of the elevator is connected with the top of the box body, the end face, away from the spiral drill bit, of the driving unit is provided with a spring, a stress surface of the spring is provided with a pressure sensor, and the pressure sensor is electrically connected with the elevator through a controller.

Furthermore, the driving unit comprises a main transmission shaft and a plurality of auxiliary transmission shafts, the axes of the main transmission shaft and the auxiliary transmission shafts are vertical, a plurality of second bevel gears are uniformly arranged on the main transmission shaft and are in meshing transmission with third bevel gears on the corresponding auxiliary transmission shafts, packaging shells are arranged outside the main transmission shaft, the second bevel gears and the third bevel gears, the auxiliary transmission shafts and one of the second bevel gears extend out of the packaging shells, the second bevel gears extending out of the packaging shells are in meshing transmission with first bevel gears fixed on the output shaft of the motor, and each auxiliary transmission shaft is fixedly connected with the rear end of the corresponding spiral drill bit; the packaging shell is connected with the box body in a sliding mode, and the spring is installed on the end face, far away from the spiral drill bit, of the packaging shell.

Furthermore, the center of the third bevel gear is provided with a through hole, the auxiliary transmission shaft is of a hollow structure, the heating tube bundle is fixed inside the box body, an outlet of the heating tube bundle is connected with one end of the corrugated pipeline, and the other end of the corrugated pipeline penetrates through the third bevel gear, the auxiliary transmission shaft and the inner cavity of the spiral drill bit to be communicated.

Furthermore, a steel ball channel is arranged at the joint of the driving unit and the inner wall of the box body, the steel ball channel is parallel to the axis of the spiral drill bit, and the packaging shell is connected in the steel ball channel in a sliding manner; the inner wall of the steel ball channel is provided with grooves at intervals, a lubricating grease layer is coated in the grooves, the steel balls are uniformly distributed in the lubricating grease layer, and the depth of each groove is smaller than the diameter of each steel ball.

Furthermore, the motor is located the top of encapsulation casing, and the casing and the box inner wall of motor are along auger bit's axis direction sliding connection, and the draw-in groove sliding connection that auger bit axis direction set up is followed to the flexible head and the box top of lifting machine.

Furthermore, the inlet of the heating tube bundle is connected with a blower through a flared pipeline, and the conveying pipeline is communicated with the flared pipeline.

Furthermore, the axial line of the spiral drill bit inclines downwards by 5 degrees to 10 degrees, a sharp drill point is arranged at the front end of the spiral drill bit, a spiral thread is arranged on the drill body, and the thread extends along the radial direction of the drill body and is conical.

Further, the helix angle of the thread is 18-38 degrees, the thread pitch is 100-120mm, and the thread depth is 8-12 mm.

Furthermore, the diameter of the small hole on the surface of the drill body is 4-6mm, and the hole spacing is 4-6 mm.

Furthermore, the distance between the spiral drill bits is 320-350 mm.

A use method of an improved intelligent stone-avoiding device for turning over and baking bad fillers in an excessively wet embankment specifically comprises the following steps:

s1, starting the heating tube bundle to preheat the air remained in the pipeline;

s2, controlling the box body to move to a proper position in the vertical direction through a lifter, starting a motor, driving a spiral drill bit to rotate through a driving unit, enabling the spiral drill bit to extend into the embankment filler, exposing the filler layer on the upper surface of the spiral drill bit, and turning the filler initially;

s3, after the heating tube bundle is preheated, the flow rate of hot air in the heating tube bundle is 8-12m/S, the hot air is blown into the hollow cavity of the spiral drill bit and blown into surrounding fillers through small holes on the surface of the drill body, and the fillers are turned and dried;

s4, conveying the modified water absorbent into the heating tube bundle through the conveying pipe, spraying the modified water absorbent from the small holes under the pushing of the air flow, spraying the modified water absorbent on the surrounding filler, and drying and modifying the filler;

in the process of S2-S4, when the spiral drill meets stones, the spiral drill compresses the spring, and when the pressure sensor detects that the pressure reaches a preset value, the controller controls the elevator to lift the box body.

The invention has the beneficial effects that:

(1) the drying mode of the invention comprises two processes, wherein the first process is that hot air flow is blown out from small holes of the drill bit in the deep filler of the embankment, and the hot air flow slowly rises in the filler to dry the deep filler from bottom to top; the second process is that the quick lime sprayed along the hot air flow absorbs the deep-layer filler efficiently, and the spiral drill bit of the invention is arranged below the deep-layer embankment filler during working, so that the whole drying process can be carried out at a deeper part of the embankment filler, and the deep-layer filler is turned over and dried, and the whole water content of the embankment filler is less than 3 percent.

(2) The invention improves the filler conveniently and economically while drying the filler. The quick lime can not only play the moisture absorption effect, but also improve the filler soil property effect, makes filler intensity and stability improve greatly, makes the efficiency of construction improve greatly, and its improvement process can directly realize along drying device, very convenient add quick lime modifier to the embankment filler, and the process is simple, has improved the improvement effect.

(3) The pressure sensing device can automatically and sensitively react to the pressure from the spiral drill bit, when the spiral drill bit touches a large stone block, a spring at the tail end of the spiral drill bit is pressed to deform, the pressure sensor detects that the pressure reaches a set limit value, the lifting machine is controlled to lift through the controller, in the lifting process, the mechanical equipment pushes the whole stone avoiding device to move forward, the spiral drill bit is put down by the lifting machine after the stone is avoided, and the filling material is continuously baked and improved; the intelligent large stone can be avoided, the loss caused by damage of facilities is reduced, and the delay of the progress of the project is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic front view of the overall structure of an embodiment of the present invention.

Fig. 2 is a schematic plan view of the overall structure of the embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a device for drying and modifying filler in an embodiment of the present invention.

FIG. 4 is a schematic axial cross-section of a helical drill according to an embodiment of the present invention.

FIG. 5 is a schematic radial cross-section of a helical drill according to an embodiment of the present invention.

FIG. 6 is a schematic structural view of the interior of a ball channel in an embodiment of the present invention.

Fig. 7 is a top view of the drive unit internal bevel gear, drive shaft of the present invention.

Fig. 8 is a right side view of fig. 7.

In the figure, 11 motors, 12 driving units, 121 first bevel gears, 122 main transmission shafts, 123 second bevel gears, 124 auxiliary transmission shafts, 125 third bevel gears, 13 heating tube bundles, 14 spiral drill bits, 141 small holes, 142 threads, 143 drill tips, 144 drill bodies, 21 blowers, 22 feed pipelines, 23 trumpet-shaped pipelines, 31 hoists, 321 power supply lines, 322 pressure induction switches, 323 springs, 33 steel ball channels, 331 inner walls, 332 steel balls and 34 boxes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention discloses an improved intelligent stone-avoiding device for turning over bad filler when an embankment is too wet, and comprises a filler turning-over device, a soil property improving device and an automatic stone-avoiding device as shown in figures 1-2.

The structure of the filler turning and drying device, as shown in fig. 1-3, comprises a box body 34, wherein the front end of a hollow spiral drill bit 14 extends out of the box body 34, the rear end of the spiral drill bit 14 is in transmission connection with an output shaft of a motor 11 through a driving unit 12, an internal cavity of the spiral drill bit 14 is communicated with an outlet of a heating tube bundle 13, an inlet of the heating tube bundle 13 is connected with a blower 21 through a horn-shaped pipeline 23, so that air heating and circulation effects are convenient to guarantee, and a drill body of the spiral drill bit 14 is uniformly provided with a plurality of small holes. The driving unit 12 is driven by the motor 11 to work, so as to drive the auger bit 14 to rotate, the rotating speed is 100-120 r/min, air generated by the blower 21 pushes the air to enter the heating tube bundle 13, the heating tube bundle 13 heats the air entering the heating tube bundle 13 through electric energy, so as to form hot air, the hot air speed is 8-12m/s, and the hot air is finally blown out from the small hole 141 on the surface of the auger bit 14 to turn over and dry the filler.

The soil quality improving device is characterized in that a material conveying pipe 22 is communicated with a horn-shaped pipeline 23, the material conveying pipe 22 is used for conveying an improved water absorbent into the heating pipe bundle 13, the improved water absorbent can be quicklime, and the material conveying pipe 22 is connected with a quicklime storage box; the air generated by the blower 21 pushes the quicklime to be sprayed out from the small hole 141 along with the air flow; the hot air flow range sprayed out by each spiral drill bit 14 is about 0.08-0.1m, and filler water absorption and drying and embankment filler improvement are efficiently carried out.

The automatic stone avoiding device comprises a driving unit 12, a lifting machine 31, a telescopic head, a spring 323, a pressure sensor and a controller, wherein the driving unit 12 is connected in a box body 34 in a sliding manner, the telescopic head of the lifting machine 31 is connected with the top of the box body 34, the end face, far away from a spiral drill bit 14, of the driving unit 12, the stressed face of the spring 323 is provided with the pressure sensor, and the pressure sensor is electrically connected with the lifting machine 31; the pressure sensor is a column type pressure sensor with the model number GSL304, the pressure sensing switch 322 is connected in a power supply line 321 of the elevator 31, the model number of the controller is KY025, and the controller receives signals of the pressure sensor and controls the pressure sensing switch 322 to be powered on or off.

As shown in fig. 7-8, the driving unit 12 includes a main transmission shaft 122 and 5 auxiliary transmission shafts 124, the axes of the main transmission shaft 122 and the auxiliary transmission shafts 124 are perpendicular, a plurality of second bevel gears 123 are uniformly installed on the main transmission shaft 122, the driven bevel gears 123 are engaged with third bevel gears 125 on the corresponding auxiliary transmission shafts 124, the exterior of the main transmission shaft 122, the auxiliary transmission shafts 124, the second bevel gears 123 and the third bevel gears 125 are provided with packaging housings, the auxiliary transmission shafts 124 and one of the second bevel gears 123 extend out of the packaging housings, the second bevel gears 123 extending out of the packaging housings are engaged with first bevel gears 121 fixed on the output shaft of the motor 11, and each auxiliary transmission shaft 124 is welded with the rear end of the corresponding spiral drill 14; the packaging shell is connected with the box body 34 in a sliding mode, and the spring 323 is connected between the side wall, away from the spiral drill bit 14, of the packaging shell and the sensing surface of the pressure sensor; the center of the third bevel gear 125 is provided with a through hole, the auxiliary transmission shaft 124 is of a hollow structure, the blower 21 and the heating tube bundle 13 are both fixed inside the box body 34, the outlet of the heating tube bundle 13 is connected with one end of a corrugated pipe, and the other end of the corrugated pipe penetrates through the third bevel gear 125 and the auxiliary transmission shaft 124 to be communicated with the inner cavity of the spiral drill bit 14.

Operation of the drive unit 12:

the rotation of the motor 11 is converted into the torsion of the main transmission shaft 122 through the meshing of the first bevel gear 121 and the second bevel gear 123, and then the torsion of the main transmission shaft 122 is converted into the torsion of 5 auxiliary transmission shafts 124 through the other 5 second bevel gears 123 on the main transmission shaft, so as to drive the corresponding spiral drill bit 14 to rotate; 5 spiral drills 14 are distributed in a row at equal intervals, and the interval is 320 mm and 350 mm.

A steel ball channel 33 is arranged at the joint of the packaging shell and the inner wall of the box body 34, the steel ball channel 33 is parallel to the axis of the auger bit 14, and the packaging shell is connected in the steel ball channel 33 in a sliding manner; as shown in fig. 6, grooves are arranged on the inner wall 331 of the steel ball channel 33 at intervals, a lubricating grease layer is coated in the grooves, the steel balls 332 are uniformly distributed in the lubricating grease layer, and the depth of the grooves is less than the diameter of the steel balls 332; the packaging shell of the driving unit 12 slides in the steel ball channel 33 along with the auger bit 14, so that the auger bit 14 can slide in the steel ball channel 33 with small resistance, the sensing precision of the pressure sensor is improved, and the stone avoiding effect is improved.

The motor 11 is positioned above the packaging shell, the shell of the motor 11 is in sliding connection with the inner wall of the box 34 along the axial direction of the spiral drill bit 14, the weight of the motor 11 and the first bevel gear 121 is borne by the box 34, meanwhile, after the spiral drill bit 14 encounters a stone, the packaging shell is pushed to slide backwards along the steel ball channel 33, and under the action of the second bevel gear 123, the motor 11 and the first bevel gear 121 move backwards together; the telescopic head of the hoister 31 is connected with the clamping groove arranged at the top of the box body 34 along the axial direction of the spiral drill bit 14 in a sliding manner, so that the interference on the movement of the box body 34 is avoided, the induction precision of the pressure sensor is improved, and the stone avoiding effect is further improved.

The structure of the auger bit 14 of the invention, as shown in fig. 4-5, the front end of the auger bit 14 is provided with a sharp drill tip 143, the drill body 144 of the auger bit 14 is a hollow cylinder, the inner diameter of each auger bit 14 is 50-70mm, the outer diameter is 70-90mm, and the length of the auger bit 14 is 450-500 mm; small holes 141 are distributed on the surface of the drill body 144, the diameter of each small hole is 4-6mm, the distance between every two small holes is 4-6mm, and therefore quicklime can be conveniently poured into the drill body and blown into the filler through the small holes 141; the drill body 144 is provided with a spiral thread 142, the spiral angle is 18-38 degrees, the thread interval is 100-120mm, the thread depth is 8-12mm, and the spilled quicklime can be well mixed with the filler in the process of loosening the embankment filler during working. The body 144 of the auger bit 14 is doped with high-quality iron-chromium-aluminum, and the drill tip 143 is solid high-quality iron-chromium-aluminum, has certain hardness, is convenient to loosen and is difficult to wear.

As seen in fig. 4, the thread 142 extends radially along the drill body 144 and is conical, the axis of the auger bit 14 inclines downwards by 5 degrees to 10 degrees, the lower layer of the filler is turned to the surface layer through the rotation of the thread 142, and the resistance of the filler to the drill bit is reduced in the loosening process; beyond this range, the resistance of the longitudinal filler during the advancing process is likely to generate a large bending moment at the joint of the tail of the drill bit, which is likely to cause damage to the device, and most of the drill body may not be guaranteed to be exposed out of the earth surface.

The use method of the improved stone avoiding device for turning and baking the embankment filler provided by the embodiment of the invention specifically comprises the following steps:

s1, starting the heating tube bundle 13, preheating the heating tube bundle 13 for 3-5 minutes before working, and preheating the air remained in the pipeline; the pressure sensor and the controller are electrically connected with a power supply line 321 and a pressure sensing switch 322 of the elevator 31;

s2, controlling the box body 34 to move to a proper position through the elevator 31, starting the motor 11, driving the spiral bit 14 to rotate through the driving unit 12, enabling the spiral bit 14 to extend into the embankment filler, exposing the filler layer on the upper surface of the spiral bit 14, and turning the filler initially;

s3, after the heating tube bundle 13 is preheated, turning on the blower 21, blowing hot air into the hollow cavity of the auger bit 14, blowing the hot air into the surrounding filler from the small holes 141 on the surface of the drill body 144, and turning over and drying the filler;

s4, inputting quicklime into the flared pipeline 23 through the material conveying pipe 22, spraying the quicklime from the small holes 141 on the surface of the drill body 144 under the pushing of air flow, spraying the quicklime on the surrounding filler, drying the water in the filler and improving the quality of the filler soil.

In the process of S2-S4, when the auger bit 14 encounters a stone, the auger bit 14 moves backward, the spring 323 is compressed by force, and when the pressure sensor detects that the pressure does not reach a preset value, the controller controls the pressure sensing switch 322 to disconnect the power supply line 321 of the elevator 31, at this time, the elevator 31 does not work, the mechanical equipment pushes the whole stone avoiding device to advance, and meanwhile, the filling turning and drying device and the soil property improving device work normally. When the pressure sensor detects that the pressure reaches a preset value, the controller controls the pressure sensing switch 322 to enable a power supply line 321 of the hoister 31 to be communicated, a telescopic head of the hoister 31 lifts the box body 34 through the clamping groove, so that the spiral drill bit 14 is lifted, in the lifting process, mechanical equipment pushes the whole stone avoiding device to advance for about 20cm, after stones are avoided, the hoister 31 puts down the box body 34, and the filler turning and drying device and the soil quality improving device continue to work normally; if meeting the stone, continuing the operation, and if not meeting the stone, continuing turning over and drying; the steel ball channel 33, the pressure sensing switch, the driving unit 12 and the heating tube bundle 13 are positioned inside the box body 34, so that the whole device can be conveniently lifted when the lifter 31 works. In the whole overturning and drying and improving process, the pressure sensing device can intelligently avoid large stones, reduce the loss caused by the damage of facilities, avoid the delay of the project progress, and solve the problems that the damage of a overturning and loosening machine is caused by large stones encountered in the overturning and loosening process, thereby generating a large amount of maintenance cost and delaying the construction period.

The invention has the following advantages:

1. the poor embankment filler mainly refers to roadbed fillers with liquid limit larger than 50 and plasticity index larger than 26, and the poor embankment filler is rich in humus, expansive mineral substances, salt and other components, and some of the poor embankment filler is organic soil, saline soil, loess, expansive soil and the like; in actual use, various machine equipment is generally needed for turning soil, drying and improving the filler, the task can be completed only by carrying out stage-by-stage engineering, and the embankment filler has a lot of large stones, so that the requirement on the machine equipment is extremely high. The equipment components required by soil turning, drying and filler improvement are greatly different, the execution equipment of various functions are necessarily influenced mutually, the functions are integrated, the formed equipment is necessarily huge and complex, the required capital cost is high, the compatibility of each equipment needs to be considered, and at present, related design schemes are rarely adopted. The invention integrates the functions of soil turning, drying, filler improvement and automatic stone avoiding, can be simultaneously used for four functions of soil turning, drying, filler improvement and intelligent stone avoiding, ensures that the functions of soil turning, drying, filler improvement and automatic stone avoiding work simultaneously, and has extremely high compatibility; multiple tasks can be completed by one project, the consumption of repeated work, time, labor and material funds is reduced, the error rate, manpower, material resources and financial resources are reduced, the project efficiency is improved, and the construction period progress is greatly improved. Need not increase the device in addition, just can realize the function of packing improvement, this device still keeps away the stone device including intelligence, reduces the loss that the facility destruction caused and avoids the delay of engineering progress.

The heating and drying mode in the existing filler drying technology is single, the efficiency is low, and the drying is not uniform. The first process is that a blower is used to blow out airflow with a certain flow speed, the airflow is heated by a heating tube bundle to form hot airflow, the hot airflow is blown out from small holes of a drill bit in deep filling of the embankment, and the hot airflow slowly rises in the filling to dry the deep filling from bottom to top. The second process is that the quicklime sprayed out along the hot air flow absorbs water of the deep filler with high efficiency; the two drying processes are mutually matched, so that the drying efficiency is greatly improved, and the overall water content of the embankment filler is below 3%; the problems of unreasonable drying mode, insufficient drying and even large manpower, material and financial resource consumption at present are solved. The problem of traditional embankment deep filler moisture content can not reach the construction requirement and cause the construction difficulty is solved.

2. The invention dries the filler, and improves the filler conveniently and economically by using the quicklime, the quicklime not only can absorb moisture, but also can improve the soil quality of the filler, so that the strength and stability of the filler are greatly improved, the quick lime is portable and economical, no additional path is required in the quicklime spraying process, no additional space is occupied, and the improvement process is simple and efficient.

3. The pressure sensing device can automatically and sensitively react to the pressure from the spiral drill bit, and when the pressure reaches the specified pressure, the sensing switch can automatically work to enable the hoister to work to lift the whole turning and drying improved stone avoiding device, so that large stones are intelligently avoided, loss caused by damage of facilities is reduced, delay of project progress is avoided, and the problems that damage of a turning machine is caused due to the fact that large stones are met in the turning process, and accordingly a large amount of maintenance cost and construction period delay are caused are solved.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. The intelligent embankment over-wet bad filler overturning and baking improved stone avoiding device is characterized by comprising a box body (34), wherein the front end of a hollow spiral drill bit (14) extends out of the box body (34), the rear end of the spiral drill bit (14) is in transmission connection with an output shaft of a motor (11) through a driving unit (12), an internal cavity of the spiral drill bit (14) is communicated with an outlet of a heating tube bundle (13), the internal hot air flow rate of the heating tube bundle (13) is 8-12m/s, a drill body of the spiral drill bit (14) is uniformly provided with a plurality of small holes, and a conveying pipe (22) for conveying an improved water absorbent is communicated with the heating tube bundle (13); the driving unit (12) is connected with the inner wall of the box body (34) in a sliding mode, the telescopic head of the lifting machine (31) is connected with the top of the box body (34), a spring (323) is installed on the end face, far away from the spiral drill bit (14), of the driving unit (12), a pressure sensor is installed on the stress surface of the spring (323), and the pressure sensor is electrically connected with the lifting machine (31) through a controller.

2. The improved intelligent stone-avoiding device for turning over and drying the poor filling materials of the embankment which are too wet according to the claim 1, the driving unit (12) is characterized by comprising a main transmission shaft (122) and a plurality of auxiliary transmission shafts (124), wherein the axes of the main transmission shaft (122) and the auxiliary transmission shafts (124) are vertical, a plurality of second bevel gears (123) are uniformly arranged on the main transmission shaft (122), the second bevel gears (123) are in meshing transmission with third bevel gears (125) on the corresponding auxiliary transmission shafts (124), packaging shells are arranged outside the main transmission shaft (122), the second bevel gears (123) and the third bevel gears (125), the auxiliary transmission shafts (124) and one of the second bevel gears (123) extend out of the packaging shells, the second bevel gears (123) extending out of the packaging shells are meshed with first bevel gears (121) fixed on output shafts of a motor (11), and each auxiliary transmission shaft (124) is fixedly connected with the rear end of a corresponding spiral drill (14); the packaging shell is connected with the box body (34) in a sliding mode, and the spring (323) is installed on the end face, far away from the spiral drill bit (14), of the packaging shell.

3. The improved intelligent stone avoiding device for the embankment overwetting bad filler turning and drying according to claim 2, wherein a through hole is formed in the center of the third bevel gear (125), the auxiliary transmission shaft (124) is of a hollow structure, the heating tube bundle (13) is fixed inside the box body (34), an outlet of the heating tube bundle (13) is connected with one end of a corrugated pipe, and the other end of the corrugated pipe penetrates through the third bevel gear (125) and the auxiliary transmission shaft (124) to be communicated with an inner cavity of the spiral drill bit (14).

4. The improved intelligent stone avoiding device for the embankment overwet bad filler turning and drying according to the claim 1 or 2, wherein a steel ball channel (33) is arranged at the joint of the driving unit (12) and the inner wall of the box body (34), the steel ball channel (33) is parallel to the axis of the auger bit (14), and the packaging shell is slidably connected in the steel ball channel (33); grooves are arranged on the inner wall (331) of the steel ball channel (33) at intervals, a lubricating grease layer is coated in the grooves, the steel balls (332) are uniformly distributed in the lubricating grease layer, and the depth of each groove is smaller than the diameter of each steel ball (332).

5. The improved intelligent stone avoiding device for the embankment over-wet bad filler turning and drying according to claim 2, wherein the motor (11) is located above the packaging shell, the shell of the motor (11) is in sliding connection with the inner wall of the box body (34) along the axial direction of the auger bit (14), and the telescopic head of the elevator (31) is in sliding connection with the clamping groove formed in the top of the box body (34) along the axial direction of the auger bit (14).

6. The improved intelligent stone avoiding device for the overturning and drying of the poor filling material of the embankment which is too wet according to the claim 1, wherein the inlet of the heating tube bundle (13) is connected with the blower (21) through a flared pipeline (23), and the material conveying pipe (22) is communicated with the flared pipeline (23).

7. The improved intelligent stone avoiding device for turning over bad embankment wet filler, according to claim 1, wherein the axis of the auger bit (14) is inclined downwards by 5 degrees to 10 degrees, the front end of the auger bit (14) is provided with a sharp drill point (143), the drill body (144) is provided with a spiral thread (142), and the thread (142) extends along the radial direction of the drill body (144) and is conical.

8. The improved intelligent stone avoiding device for turning over and baking the poor filling material on the embankment in case of over-wetting according to claim 5, wherein the helix angle of the threads (142) is 18-38 degrees, the pitch of the threads is 100-120mm, and the depth of the threads is 8-12 mm.

9. The improved intelligent stone avoiding device for turning over bad filling materials on the embankment in case of over-wetting according to claim 1, wherein the diameter of the small holes (141) on the surface of the drill body (144) is 4-6mm, the hole spacing is 4-6mm, and the spacing between the spiral drills (14) is 320-350 mm.

10. A use method of an improved intelligent stone-avoiding device for turning over and baking bad fillers in an excessively wet embankment is characterized by comprising the following steps:

s1, starting the heating tube bundle (13) to preheat the air remained in the pipeline;

s2, controlling the box body (34) to move to a proper position in the vertical direction through the elevator (31), starting the motor (11), driving the spiral drill bit (14) to rotate through the driving unit (12), enabling the spiral drill bit (14) to extend into the embankment filler, and exposing the filler layer on the upper surface of the spiral drill bit (14) to turn over the filler initially;

s3, after the heating tube bundle (13) is preheated, the flow rate of hot air in the heating tube bundle (13) is 8-12m/S, the hot air is blown into the hollow cavity of the spiral drill bit (14), and then blown into surrounding fillers through the small holes (141) on the surface of the drill body (144), and the fillers are baked;

s4, conveying the modified water absorbing agent into the heating tube bundle (13) through the conveying pipe (22), spraying the modified water absorbing agent from the small holes (141) under the pushing of air flow, spraying the modified water absorbing agent on the surrounding filler, and drying and modifying the filler;

in the process of S2-S4, when the spiral drill bit (14) meets stones, the spiral drill bit (14) compresses the spring (323), the pressure sensor detects that the pressure reaches a preset value, the controller controls the elevator (31) to lift the box body (34), in the lifting process, the mechanical equipment pushes the whole stone avoiding device to move forward, after the stones are avoided, the elevator (31) puts down the box body (34), and the filling material is continuously baked and improved.

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