CN111906938A

CN111906938A - A concrete mixer for highway tunnel construction

Info

Publication number: CN111906938A
Application number: CN202010721019.0A
Authority: CN
Inventors: 郭伍军; 薛卫平; 吴江龙; 周毅; 王因峰
Original assignee: Cccc Shec Meng Xing Engineering Co ltd
Current assignee: Cccc Shec Meng Xing Engineering Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2020-11-10
Anticipated expiration: 2040-07-24
Also published as: CN111906938B

Abstract

The invention discloses a concrete mixer for highway tunnel construction, which comprises a mixing barrel, a feeding device for adding cement and sand into the mixing barrel, a mixing device arranged in the mixing barrel and a driving device for driving the mixing device to rotate, wherein the feeding device comprises a first fixing frame, a first feeding barrel fixedly arranged on the first fixing frame, a first conical hollow plate fixedly arranged in the first feeding barrel, a spraying assembly arranged on the first feeding barrel, a first hollow pipe arranged in the middle of the first conical hollow plate, a plurality of first feeding holes equidistantly and annularly distributed at the upper end of the first hollow pipe, an injection assembly for blowing cement into the first hollow pipe, a first discharging hole arranged at the lower end of the first hollow pipe and a rotating head fixedly arranged at the lower end of the first hollow pipe; the invention improves the mixing speed and mixes uniformly on the premise of saving the electric energy consumption.

Description

A concrete mixer for highway tunnel construction

Technical Field

The invention relates to the technical field of construction equipment, in particular to a concrete mixer for highway tunnel construction.

Background

A concrete mixer is a device for mixing and stirring cement, sand and stone and water to prepare a concrete mixture. Traditional concrete mixer is mainly that the axle that has the blade is rotatory in drum or groove, stirs multiple raw materials and mixes, makes it to become a mixture or the machine of suitable viscosity, however, traditional mixer has the shortcoming such as the mixing velocity is slow, the homogeneity is lower for the product after the raw materials mixes often can not reach the production requirement, and production efficiency is lower, and the resistance that the rotatory in-process of stirring blade received is big, leads to electric energy consumption great.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides the concrete mixer for highway tunnel construction, improves the mixing speed on the premise of saving the electric energy consumption, and uniformly mixes the concrete.

In order to achieve the purpose, the invention adopts the following technical scheme: the concrete mixer for highway tunnel construction comprises a mixing drum, a feeding device for adding cement and gravel into the mixing drum, a stirring device arranged in the mixing drum and a driving device for driving the stirring device to rotate, wherein the feeding device comprises a first fixing frame, a first feeding drum fixedly arranged on the first fixing frame, a first conical hollow plate fixedly arranged in the first feeding drum, a spraying assembly arranged on the first feeding drum, a first hollow pipe arranged in the middle of the first conical hollow plate, a plurality of first feeding holes which are annularly distributed at the upper end of the first hollow pipe in an equidistant mode, an injection assembly for blowing cement into the first hollow pipe, a first discharging hole arranged at the lower end of the first hollow pipe, a rotating head fixedly arranged at the lower end of the first hollow pipe, first spiral slurry feeding fixedly arranged on the first hollow pipe, and a guide pipe arranged at the lower end of the first feeding drum, The second spiral slurry conveying device is arranged in the guide pipe, and the first motor is used for driving the first hollow pipe to rotate; the cement, the gravel and the water in the stirring barrel are mixed through the driving device; according to the invention, cement and gravel are primarily mixed through the feeding device, so that the cement and gravel are fed into the stirring barrel and mixed at the same time, the subsequent stirring efficiency is improved, even if the overall stirring efficiency is improved, the mixed material is fed into the stirring barrel, water is added into the stirring barrel, the driving device drives the stirring device in the stirring barrel, the cement, gravel and water in the stirring barrel are mixed through the stirring device, the mixing speed is high, the mixing is uniform, the stirring device removes stirring blades in the mixing process of the cement, gravel and water in the stirring barrel, and the electric energy consumption is greatly reduced; the first hollow pipe is driven to rotate by a first motor, the rotating head on the first hollow pipe rotates along with the first motor, the first spiral feeding slurry rotates, the sand and stone in the first conical hollow plate move downwards in the rotating process of the first spiral feeding slurry, the sand and stone fall on the rotating head, centrifugal motion is carried out through the sand and stone of the rotating head, the feeding amount of the sand and stone can be controlled through the rotating speed of the first spiral feeding slurry, cement is blown into the first hollow pipe through the injection assembly, the cement enters the rotating head through the first hollow pipe, the cement sprayed out through the rotating head and the sand and stone rotate and are mixed with each other, the cement and the sand and stone which are in different rotating speeds have different qualities, the cement and the stone can be better mixed, the cement in centrifugal motion is humidified through the spraying assembly, the cement is attached to the sand and stone, the mixing work of the cement and the sand and the stone is completed, the mixed cement and the sand and stone are transmitted into the stirring barrel through a, further mixing it by means of a stirring device.

The injection subassembly is including fixed second charging bucket of locating on first mount, be located first feed inlet department and rotate the first cavity of cover on locating first hollow tube, a second hollow tube that is used for second charging bucket and first cavity intercommunication, rotate and locate the first drive shaft in the middle of the second charging bucket, be located the second charging bucket and fixed cover locate the epaxial first carousel of first drive, a plurality of storage compartments on first carousel are located to equidistance annular distribution, fix the first inlet port of locating on the second charging bucket, be used for driving first drive shaft pivoted second motor, fixed disk of locating in the second charging bucket, locate the fluting on the fixed disk, fix the epaxial first scraper blade of first drive of locating.

Spray assembly including fixed locate the annular chamber in the first charging barrel, rotate and locate the second carousel on the annular chamber, a plurality of tooth's grooves on the second carousel are located to equidistance annular distribution, with the first gear of tooth's groove meshing, be used for driving first gear revolve's third motor, a plurality of water pipes on the second carousel are fixed to equidistance annular distribution, locate the water jet of water pipe one end department, fixed cover locates the water storage chamber on the first charging barrel, locate the water inlet on the water storage chamber, locate a plurality of through-holes on the second carousel with a plurality of water pipe one-to-ones.

The rotating head includes the body, locates the arcwall face on the body, locates the helicla flute on the arcwall face, locates second feed inlet on the body, is located the intraoral conical body of second feed inlet, equidistance annular distribution and locates a plurality of second discharge gates that body and slope set up downwards.

Agitating unit is including the rotatable third hollow tube of locating in the middle of the agitator, the fixed vortex form baffle of locating on the third hollow tube, locate the third feed inlet on the third hollow tube, locate the third spiral in the third hollow tube and send the ground paste, be used for driving the third spiral and send ground paste pivoted fourth motor, rotate the discharging pipe that sets up with third hollow tube lower extreme, the fixed second scraper blade that just contacts with the agitator inner wall of locating on the vortex form baffle, a plurality of guide plates on the fixed vortex form baffle of locating, be located between two adjacent guide plates and locate a plurality of first holes on the vortex form baffle.

The driving device comprises a second gear fixedly sleeved on the third hollow pipe, a third gear meshed with the second gear, a fifth motor for driving the third gear to rotate, a first connecting rod with one end fixedly arranged on the second spiral slurry conveying plate and the other end fixedly arranged on the second scraper plate, a fourth gear fixedly sleeved on the stirring barrel, and a fifth gear meshed with the fourth gear, rotate first lantern ring and the second lantern ring of locating on the agitator, run through fixed locate on the fifth gear and both ends rotate respectively and locate the second drive shaft on first lantern ring and second lantern ring, fix and be used for driving second drive shaft pivoted sixth motor on locating the second lantern ring, one end is fixed and is located on the second scraper blade the other end and rotates the second connecting rod of cover locating on the second drive shaft, both ends rotate respectively and locate on the first lantern ring and the second lantern ring and with the internal gear of fifth gear meshing.

The invention has the following advantages: carry out preliminary mixing to cement and grit through feeding device, make cement and grit mix in to the agitator, improve the efficiency of follow-up stirring, even whole stirring efficiency improves, the mixture after mixing drops into in the agitator, and to adding water in the agitator, through the agitating unit in the drive agitator, mix cement and grit and water in to the agitator through agitating unit, make the mixing rate fast and misce bene, agitating unit gets rid of the stirring leaf stirring to cement and grit and water mixing process in to the agitator, make power consumption greatly reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is an enlarged view of fig. 3 at B.

Fig. 6 is a partial sectional view taken along line B-B of fig. 3.

Fig. 7 is a partial sectional view taken along line C-C of fig. 6.

Fig. 8 is a partial sectional view taken along line D-D of fig. 6.

Fig. 9 is a partial sectional view taken along line F-F in fig. 2.

Fig. 10 is a schematic front view of the present invention.

Fig. 11 is a sectional view taken along line E-E of fig. 10.

Fig. 12 is a sectional view taken along line G-G in fig. 10.

Fig. 13 is a schematic structural view of the spin head.

Fig. 14 is a schematic structural diagram of the second turntable.

FIG. 15 is a schematic view of the structure of a spiral partition plate.

Fig. 16 is a schematic view of a baffle configuration.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.

As shown in figures 1-16, a concrete mixer for highway tunnel construction comprises a mixing tank 1, a feeding device 2 for adding cement and gravel into the mixing tank, a mixing device 3 arranged in the mixing tank, and a driving device 4 for driving the mixing device to rotate, wherein the feeding device 2 comprises a first fixing frame 21, a first feeding tank 22 fixedly arranged on the first fixing frame, a first conical hollow plate 23 fixedly arranged in the first feeding tank, a spraying assembly 24 arranged on the first feeding tank, a first hollow pipe 25 arranged in the middle of the first conical hollow plate, a plurality of first feeding holes 26 annularly distributed at the upper end of the first hollow pipe at equal intervals, an injection assembly 27 for blowing cement into the first hollow pipe, a first discharging hole 28 arranged at the lower end of the first hollow pipe, a rotating head 29 fixedly arranged at the lower end of the first hollow pipe, and a first spiral slurry 210 fixedly arranged on the first hollow pipe, The guide pipe 211 is arranged at the lower end of the first feeding barrel, the second spiral slurry feeding 212 is arranged in the guide pipe, and the first motor 213 is used for driving the first hollow pipe to rotate; the cement and the gravel are preliminarily mixed through the feeding device, so that the cement and the gravel are mixed while feeding into the stirring barrel, the subsequent stirring efficiency is improved, even if the overall stirring efficiency is improved, the mixed material is put into the stirring barrel, water is added into the stirring barrel, the driving device drives the stirring device in the stirring barrel, the cement, the gravel and the water in the stirring barrel are mixed through the stirring device, the mixing speed is high, the mixing is uniform, stirring blades are removed from the mixing process of the cement, the gravel and the water in the stirring barrel through the stirring device, and the electric energy consumption is greatly reduced; the first hollow pipe is driven to rotate by a first motor, the rotating head on the first hollow pipe rotates along with the first motor, the first spiral feeding slurry rotates, the sand and stone in the first conical hollow plate move downwards in the rotating process of the first spiral feeding slurry, the sand and stone fall on the rotating head, centrifugal motion is carried out through the sand and stone of the rotating head, the feeding amount of the sand and stone can be controlled through the rotating speed of the first spiral feeding slurry, cement is blown into the first hollow pipe through the injection assembly, the cement enters the rotating head through the first hollow pipe, the cement sprayed out through the rotating head and the sand and stone rotate and are mixed with each other, the cement and the sand and stone which are in different rotating speeds have different qualities, the cement and the stone can be better mixed, the cement in centrifugal motion is humidified through the spraying assembly, the cement is attached to the sand and stone, the mixing work of the cement and the sand and the stone is completed, the mixed cement and the sand and stone are transmitted into the stirring barrel through a, further mixing it by means of a stirring device.

The injection assembly 27 comprises a second charging barrel 271 fixedly arranged on the first fixing frame, a first cavity 272 positioned at the first charging port and rotatably sleeved on the first hollow pipe, a second hollow pipe 273 used for communicating the second charging barrel with the first cavity, a first driving shaft 274 rotatably arranged in the middle of the second charging barrel, a first rotating disc 275 positioned in the second charging barrel and fixedly sleeved on the first driving shaft, a plurality of material storage cavities 276 annularly distributed at equal intervals on the first rotating disc, a first air inlet 277 fixedly arranged on the second charging barrel, a second motor 278 used for driving the first driving shaft to rotate, a fixed disc 279 fixedly arranged in the second charging barrel, a slot 280 arranged on the fixed disc, and a first scraper 281 fixedly arranged on the first driving shaft; rotate through the first drive shaft of second motor drive, make first carousel rotate, make first scraper blade rotate, first scraper blade rotates the in-process and makes the cement that is located the second charging bucket pass through the fluting on the fixed disk and get into the storage intracavity on the first carousel, when the storage chamber rotates to second hollow tube department, let in the air to this storage intracavity through first inlet port, make the cement in this storage intracavity pass through in the second hollow tube gets into first cavity, cement in the first cavity gets into in the first hollow tube through a plurality of first feed inlets on the first hollow tube, cement in the first hollow tube gets into the rotating head, can guarantee the sealed of this storage cavity through the fixed disk setting, make the cement in this storage cavity can only get into in the first hollow tube through the second hollow tube.

The spraying assembly 24 comprises an annular cavity 241 fixedly arranged in the first charging barrel, a second rotating disc 242 rotatably arranged on the annular cavity, a plurality of tooth grooves 243 annularly distributed and arranged on the second rotating disc at equal intervals, a first gear 244 meshed with the tooth grooves, a third motor 245 for driving the first gear to rotate, a plurality of water pipes 246 annularly distributed and fixedly arranged on the second rotating disc at equal intervals, a water spray opening 247 arranged at one end of each water pipe, a water storage cavity 248 fixedly sleeved on the first charging barrel, a water inlet 249 arranged on the water storage cavity, and a plurality of through holes 250 which are arranged on the second rotating disc in a one-to-one correspondence manner with the plurality of water pipes; inject water into through the water inlet to the water storage intracavity, make the water of water storage intracavity get into in a plurality of water pipes, and from the water jet blowout on the water pipe, the through-hole that spun water passes through on the second carousel spouts into first charging bucket in, can make the even first charging bucket that is covered with of spun water through a plurality of water pipe settings, through the first gear of third motor drive, thereby make the second carousel rotate, the second carousel rotates the in-process and clears up water pipe water jet department, avoid long duration time use water jet to block up, last water jet and through-hole coincidence, continue to accomplish and spray water in to first charging bucket.

The rotating head 29 comprises a body 291, an arc surface 292 arranged on the body, a spiral groove 293 arranged on the arc surface, a second feed inlet 294 arranged on the body, a conical body 295 arranged in the second feed inlet, and a plurality of second discharge outlets 296 which are distributed in an equidistant annular manner on the body and are obliquely arranged downwards; in cement entering second feed inlet in the first hollow tube, the intraoral cement of second feed inlet passes through a plurality of second discharge gates blowout, sets up through the arcwall face and makes grit and cement centrifugal motion in-process form certain thickness, and the grit is different by last centrifugal motion orbit down, and rethread helicla flute sets up and makes grit and cement, better messenger's the two mix and extension mixing time, the water that sprays better and mix between the two.

The stirring device 3 comprises a third hollow pipe 31 which is rotatably arranged in the middle of the stirring barrel, a vortex-shaped partition plate 32 which is fixedly arranged on the third hollow pipe, a third feeding port 33 which is arranged on the third hollow pipe, a third spiral slurry feeding 34 which is arranged in the third hollow pipe, a fourth motor 35 which is used for driving the third spiral slurry feeding to rotate, a discharging pipe 36 which is rotatably arranged at the lower end of the third hollow pipe, a second scraping plate 37 which is fixedly arranged on the vortex-shaped partition plate and is contacted with the inner wall of the stirring barrel, a plurality of guide plates 38 which are fixedly arranged on the vortex-shaped partition plate, and a plurality of first holes 39 which are positioned between two adjacent guide plates and are arranged on the vortex-shaped partition plate; the third hollow pipe is driven to rotate by the driving device, so that the vortex-shaped partition plate on the third hollow pipe rotates, cement, gravel and water in the stirring barrel move towards the third hollow pipe, the thickness of the three in mixing is reduced by the vortex-shaped partition plate, the mixing effect is improved, meanwhile, the vortex-shaped partition plate rotates for a circle by taking the third hollow pipe as an axis, which is equivalent to mixing the three for multiple times, the mixing efficiency is greatly improved, the third spiral slurry is driven by a fourth motor to rotate in the opposite direction of the third hollow pipe, so that the mixture of the three in the middle of the vortex-shaped partition plate enters the third hollow pipe through a third feed port, the mixture in the third hollow pipe moves upwards by the third spiral slurry, the mixture of the three falls into the stirring barrel again from the upper end of the third hollow pipe and is mixed again, and the mixture of the three can move along the direction by the arrangement of a plurality of guide plates, and drop on the agitator inner wall again from a plurality of first holes, the three mixture gathers together to vortex form baffle center when being located the agitator bottommost, finally get into it through the third feed inlet on the third hollow tube, make vortex form baffle rotate the round and be equivalent to carry out the multiple mixing to the three mixture, the effect and the efficiency of mixing have been improved greatly, drive arrangement continues to drive agitating unit motion after the three mixes the completion, the ground paste antiport is sent to fourth motor drive third spiral, make the three mixture in the third hollow tube move down and get into in the discharging pipe, and discharge from the discharging pipe, can clear up the agitator inner wall through the setting of second scraper blade.

The driving device 4 comprises a second gear 41 fixedly sleeved on the third hollow pipe, a third gear 42 engaged with the second gear, a fifth motor 43 for driving the third gear to rotate, a first connecting rod 44 with one end fixedly arranged on the second spiral slurry feeding end and the other end fixedly arranged on the second scraper, a fourth gear 45 fixedly sleeved on the stirring barrel, and a fifth gear 46 engaged with the fourth gear, a first lantern ring 47 and a second lantern ring 48 which are rotatably arranged on the stirring barrel, a second driving shaft 49 which penetrates through and is fixedly arranged on the fifth gear, two ends of the second driving shaft are respectively rotatably arranged on the first lantern ring and the second lantern ring, a sixth motor 410 which is fixedly arranged on the second lantern ring and is used for driving the second driving shaft to rotate, a second connecting rod 411, one end of which is fixedly arranged on the second scraper blade, the other end of which is rotatably sleeved on the second driving shaft, and an internal gear 412, two ends of which are respectively rotatably arranged on the first lantern ring and the second lantern ring and are meshed with the fifth gear; a fifth motor drives a third gear to rotate, so that a second gear rotates, the second gear is fixedly sleeved on a third hollow pipe, so that the third hollow pipe rotates, a second driving shaft is driven to rotate by a sixth motor, so that the fifth gear rotates, the fifth gear is meshed with a fourth gear, the fourth gear is fixedly sleeved on a stirring barrel, so that the fifth gear revolves along the fourth gear to drive a first sleeve ring and a second sleeve ring to rotate, the fifth gear is meshed with an internal gear to reversely rotate, the fourth gear and the fifth gear can be protected by the arrangement of the internal gear, the first sleeve ring and the second sleeve ring, so that dust or gravel is prevented from entering to influence the transmission of the fifth gear, the second connecting rod rotates together during the rotation of the first sleeve ring, so that a second scraper is driven to rotate, the rotary vortex-shaped partition plate is driven to save more labor and rotate more stably, the second scraper blade is better matched with the inner wall of the stirring barrel, and the first connecting rod is driven to rotate in the rotating process of the second scraper blade, so that the second spiral feeding slurry is driven to rotate.

The first to sixth motors are commercially available.

Claims

1. The utility model provides a concrete mixer for highway tunnel construction which characterized in that: the device comprises a stirring barrel (1), a feeding device (2) for adding cement and gravel into the stirring barrel, a stirring device (3) arranged in the stirring barrel, and a driving device (4) for driving the stirring device to rotate, wherein the feeding device (2) comprises a first fixing frame (21), a first feeding barrel (22) fixedly arranged on the first fixing frame, a first conical hollow plate (23) fixedly arranged in the first feeding barrel, a spraying assembly (24) arranged on the first feeding barrel, a first hollow pipe (25) arranged in the middle of the first conical hollow plate, a plurality of first feed inlets (26) arranged at the upper end of the first hollow pipe in an equidistant annular distribution manner, an injection assembly (27) for blowing cement into the first hollow pipe, a first discharge outlet (28) arranged at the lower end of the first hollow pipe, a rotating head (29) fixedly arranged at the lower end of the first hollow pipe, a first spiral slurry feeding head (210) fixedly arranged on the first hollow pipe, and a second spiral, The device comprises a guide pipe (211) arranged at the lower end of the first charging barrel, a second spiral slurry feeding (212) arranged in the guide pipe, and a first motor (213) used for driving the first hollow pipe to rotate.

2. The concrete mixer for highway tunnel construction according to claim 1, wherein: the injection assembly (27) comprises a second feed barrel (271) fixedly arranged on a first fixed frame, a first cavity (272) positioned at a first feed port and rotatably sleeved on the first hollow pipe, a second hollow pipe (273) used for communicating the second feed barrel with the first cavity, a first driving shaft (274) rotatably arranged in the middle of the second feed barrel, a first rotating disc (275) positioned in the second feed barrel and fixedly sleeved on the first driving shaft, a plurality of material storage cavities (276) annularly distributed at equal intervals on the first rotating disc, a first air inlet (277) fixedly arranged on the second feed barrel, a second motor (278) used for driving the first driving shaft to rotate, a fixed disc (279) fixedly arranged in the second feed barrel, a groove (280) arranged on the fixed disc, and a first scraper (281) fixedly arranged on the first driving shaft.

3. The concrete mixer for highway tunnel construction according to claim 1, wherein: spray assembly (24) including fixed annular chamber (241) of locating in first charging barrel, rotate second carousel (242) of locating on the annular chamber, a plurality of tooth's slots (243) of equidistance annular distribution on locating the second carousel, first gear (244) with tooth's slot meshing, a third motor (245) that is used for driving first gear revolve, a plurality of water pipes (246) of equidistance annular distribution fixed locating on the second carousel, locate water jet (247) of water pipe one end department, water storage chamber (248) of fixed cover locating on first charging barrel, locate water inlet (249) on the water storage chamber, locate a plurality of through-holes (250) on the second carousel with a plurality of water pipe one-to-ones.

4. The concrete mixer for highway tunnel construction according to claim 1, wherein: the rotating head (29) comprises a body (291), an arc-shaped surface (292) arranged on the body, a spiral groove (293) arranged on the arc-shaped surface, a second feeding hole (294) arranged on the body, a conical body (295) positioned in the second feeding hole, and a plurality of second discharging holes (296) which are distributed in an equidistant annular mode, are arranged on the body and are arranged obliquely downwards.

5. The concrete mixer for highway tunnel construction according to claim 1, wherein: agitating unit (3) are including rotatable third hollow tube (31) of locating in the middle of the agitator, fixed vortex form baffle (32) of locating on the third hollow tube, third feed inlet (33) of locating on the third hollow tube, locate third spiral feed slurry (34) in the third hollow tube, be used for driving the third spiral and send slurry pivoted fourth motor (35), discharge pipe (36) of setting with third hollow tube lower extreme rotation, fixed locate on the vortex form baffle and with second scraper blade (37) of agitator inner wall contact, fixed a plurality of guide plates (38) of locating on the vortex form baffle, be located between two adjacent guide plates and locate a plurality of first holes (39) on the vortex form baffle.

6. The concrete mixer for highway tunnel construction according to claim 1, wherein: the driving device (4) comprises a second gear (41) fixedly sleeved on the third hollow pipe, a third gear (42) meshed with the second gear, a fifth motor (43) for driving the third gear to rotate, a first connecting rod (44) with one end fixedly arranged on the second spiral slurry conveying plate and the other end fixedly arranged on the second scraper plate, a fourth gear (45) fixedly sleeved on the stirring barrel, a fifth gear (46) meshed with the fourth gear, a first sleeve ring (47) and a second sleeve ring (48) rotatably arranged on the stirring barrel, a second driving shaft (49) penetrating and fixedly arranged on the fifth gear, two ends of the second driving shaft (49) respectively rotatably arranged on the first sleeve ring and the second sleeve ring, a sixth motor (410) fixedly arranged on the second sleeve ring and used for driving the second driving shaft to rotate, a second connecting rod (411) with one end fixedly arranged on the second scraper plate and the other end rotatably sleeved on the second driving shaft, and a second connecting rod (411), And an inner gear (412) which is respectively arranged on the first lantern ring and the second lantern ring at two ends and is meshed with the fifth gear.