CN110696187B

CN110696187B - Concrete mixing device

Info

Publication number: CN110696187B
Application number: CN201910973571.6A
Authority: CN
Inventors: 郭金生; 王林
Original assignee: 无锡锦汇建筑科技有限公司
Current assignee: Wuxi Jinhui Construction Technology Co ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-12-29
Anticipated expiration: 2039-10-14
Also published as: CN110696187A

Abstract

The invention relates to a concrete stirring device which comprises a stirring cylinder, a material raking device, a stirring device and a vibrating device, wherein the material raking device is arranged at the upper end of the inner side wall of the stirring cylinder in a bilateral symmetry mode, the stirring device is arranged below the material raking device, the stirring device and the inner wall of the stirring cylinder are in a sliding fit mode, the vibrating device is arranged at the middle end of the inner side wall of the stirring cylinder in a bilateral symmetry mode, and the vibrating devices are arranged at equal intervals up and down.

Description

Concrete mixing device

Technical Field

The invention relates to the field of stirring machinery, in particular to a concrete stirring device.

Background

The concrete is artificial stone which is prepared by taking cement as a main cementing material, adding water, sand, stones and chemical additives and mineral admixtures if necessary, mixing the materials according to a proper proportion, uniformly stirring, densely molding, curing and hardening. Concrete is mainly divided into two stages and states: plastic state before setting and hardening, namely fresh concrete or concrete mixture; the hardened concrete or concrete has the advantages of abundant raw materials, low cost, good plasticity, high strength, good durability, reinforcement by steel bars and the like, but the following problems can occur in the process of stirring the concrete:

1. the concrete is directly stirred at one time by adopting a stirring device with a vertical barrel wall, the concrete is easy to swing to the side wall of the stirring barrel to generate an accumulation phenomenon under the action of centrifugal force, the accumulation phenomenon at a pouring opening is particularly obvious, the concrete forms a solidification state after a long time, the work of the stirring device is influenced, the stirring efficiency is reduced, and the concrete raw materials are easy to waste;

2. the concrete is formed by mixing materials such as water, sand, stones and the like, certain gaps exist among the required materials in the stirring process, the concrete is usually stirred in a mode of a small amount of times, the gaps are not utilized, the operation is repeatedly carried out, the working time is prolonged, and the working efficiency is reduced.

Disclosure of Invention

Technical scheme (I)

In order to achieve the purpose, the invention adopts the following technical scheme that the concrete stirring device comprises a stirring cylinder, material scraping devices, a stirring device and a vibration device, wherein the material scraping devices are symmetrically installed at the upper end of the inner side wall of the stirring cylinder in the left-right direction, the stirring device is arranged below the material scraping devices, the stirring device is connected with the inner wall of the stirring cylinder in a sliding fit mode, the vibration devices are symmetrically installed at the middle end of the inner side wall of the stirring cylinder in the left-right direction, and the vibration devices are distributed at equal intervals in the up-down direction.

The material raking device comprises a motor, a rotary rod, a connecting shaft, a connecting rod and a material raking plate, the motor is installed on the upper end of the inner side wall of a stirring cylinder, one end of the rotary rod is connected with an output shaft of the motor, the connecting shaft is installed at the other end of the rotary rod, the connecting rod is installed at the front end of the connecting shaft, the lower end face of the connecting rod is fixedly connected with the upper end face of the material raking plate, the lower end face of the material raking plate is connected with the stirring device in a sliding fit mode, during specific work, the rotary rod is rotated through the motor, the rotary cylinder drives the connecting rod to rotate through the connecting shaft, and then the material raking plate performs left-right reciprocating sliding, the material raking cylinder pushes the concrete on the stirring device inwards in the process, more concrete enters the stirring device, and the probability of accumulation phenomenon of the concrete in the.

Agitating unit include No. two motors, the apparatus further comprises a rotating shaft, the card post, stirring group and rectangular channel, No. two motors are installed at the lower terminal surface middle part of agitator tank, the pivot is installed to the output shaft upper end of No. two motors, the card post is installed to bilateral symmetry in the pivot, the equidistance is arranged from top to bottom on the card post, the rectangular channel has been seted up to the inboard bilateral symmetry of stirring group, link to each other through the sliding fit mode between rectangular channel and the card post, link to each other through the sliding fit mode between the left and right sides of stirring group and the agitator tank inside wall, when concrete work, drive the pivot through No. two motors and rotate, the pivot drives the synchronous rotation of stirring group through the card post, empty the concrete in the agitator tank directly over from the stirring group through artifical mode, the.

The stirring group comprises a first rotary disc, a second rotary disc, a third rotary disc, a trapezoid groove, a circular cover plate, a telescopic rod and a pressing block, wherein the first rotary disc, the second rotary disc and the third rotary disc are sequentially arranged on the rotating shaft from top to bottom through the matching use of a clamping column and a rectangular groove, the trapezoid grooves are formed in the first rotary disc, the second rotary disc and the third rotary disc, the trapezoid grooves are uniformly distributed along the circumferential direction of the upper end surfaces of the first rotary disc, the second rotary disc and the third rotary disc, the narrow ends of the trapezoid grooves are positioned at the inner sides, the width of the trapezoid grooves is gradually increased from inside to outside, the circular cover plates are arranged between the first rotary disc and the second rotary disc and between the second rotary disc and the third rotary disc, the lower end surfaces of the circular cover plates are all arranged at the upper ends of the lower end structures of the circular cover plates, the upper end surfaces of the circular cover plates are all connected with the upper end, the outside of telescopic link links to each other with the inside wall of agitator, at the stirring in-process, the concrete is easily to the whipping to the outside under the effect of centrifugal force, and the width in dovetail groove is crescent from inside to outside, and then make more falling into the dovetail groove in the outside concrete, reduce the probability that the phenomenon was piled up in the concrete emergence, in the concrete downstream process, circular cover plate plays direction and limiting displacement to it, avoid the concrete to whip to the outside in a large number and cause a small amount of concrete to pass through the dovetail groove downstream, improve stirring efficiency.

The vibrating device comprises a third motor and a cam, the outer side of the third motor is arranged on the inner side wall of the cylinder body, the third motor is positioned between a first rotating disc and a second rotating disc, the second rotating disc and the third rotating disc, the third motor is positioned on the outer side of a circular cover plate, the cam is arranged at the output shaft end of the third motor, the cam is connected with the first rotating disc, the second rotating disc and the third rotating disc in a sliding fit mode, when the vibrating device works specifically, the third motor drives the cam to rotate, in the rotating process, the cam jacks up and pushes down the first rotating disc and the second rotating disc, under the high-frequency rotation of the third motor, the first rotating disc and the second rotating disc are equivalent to vibrating motion, under the action of a telescopic rod, the first rotating disc and the second rotating disc vibrate within a certain range, the vibration can play a role in compaction and an auxiliary stirring role in concrete, and the containing amount of the concrete in the cylinder body is increased, the one-time operation efficiency is improved.

As a preferred technical scheme of the invention, the stirring cylinder comprises a cylinder body, a grid plate, supporting seats and a storage box, wherein the grid plate is arranged in the middle of the lower end of the cylinder body, the supporting seats are symmetrically arranged in front of and behind the lower end surface of the cylinder body, the storage box is arranged on the lower end surface of the grid plate and is positioned between the two supporting seats, and the stirred concrete can be stored in the storage box through the grid plate for subsequent large-scale use.

As a preferred technical scheme of the invention, the lower end of the interior of the cylinder body is provided with the trapezoidal cover plate, the lower end face of the trapezoidal cover plate is attached to the upper end face of the grid plate, concrete in the stirring process is swung outwards under the action of centrifugal force, when the concrete is swung to the inner side wall of the trapezoidal cover plate, the concrete can automatically slide downwards to the storage box due to the inclined structure of the side face of the trapezoidal cover plate, and the probability of accumulation of the concrete at the lower end of the inner side wall of the cylinder body is reduced.

According to a preferred technical scheme, the scraping plate is of an arc-shaped structure, the lower end face of the scraping plate is provided with the rubber layer, the arc-shaped structure can play a role in scraping concrete at the upper end of the stirring device in an all-around mode, the rubber layer increases friction between the lower end face of the scraping plate and the upper end face of the stirring device, the rubber layer can deform, the concrete is formed by mixing water, cement and sand stones, and the rubber layer can reduce the probability of slipping and clamping stagnation when the lower end face of the scraping plate contacts the concrete.

As a preferred technical scheme of the invention, the upper end surfaces of the second rotating disc and the third rotating disc are of concave arc structures, the concave arc structures are convenient for falling concrete to smoothly slide inwards and fall into the trapezoidal grooves, and the probability of accumulation of the concrete at the upper ends of the second rotating shaft and the third rotating shaft is reduced.

As a preferred technical scheme of the invention, the inner side walls of the trapezoidal cover plate and the circular cover plate are smooth surfaces, the smooth surfaces reduce the friction between concrete and the inner side walls of the trapezoidal cover plate and the circular cover plate, the downward sliding speed of the concrete on the inner side walls of the trapezoidal cover plate and the circular cover plate is improved, the amount of the concrete falling into the storage box is increased, and the wave rate is reduced.

As a preferred technical scheme of the invention, the circular diameter formed by the trapezoid-shaped grooves on the first turntable, the second turntable and the third turntable is gradually reduced from top to bottom, so that an inverted pagoda structure is formed, the stirring force applied to concrete is gradually increased by the inverted pagoda structure, the stirring is more sufficient, and the stirring efficiency is improved.

(II) advantageous effects

According to the concrete stirring device, the concrete is stirred by adopting a multi-stage combined design concept, so that the stirring is more sufficient and uniform, the stirring effect is improved, the concrete at the pouring opening is pushed inwards by adopting the raking device, and the probability of accumulation is reduced;

1. the stirring group provided by the invention can be used for carrying out three-stage stirring on concrete, so that the homogenization degree of the concrete is improved, the second turntable and the third turntable, of which the main at the upper ends are of concave arc structures, are convenient for the concrete to smoothly slide inwards, and the probability of accumulation of the concrete at the upper ends of the second rotating shaft and the third rotating shaft is reduced;

2. the trapezoidal cover plate and the circular cover plate play roles in guiding and limiting concrete, and meanwhile, because the side face of the trapezoidal cover plate is of an inclined structure, the concrete thrown to the inner side wall of the trapezoidal cover plate can automatically slide down to the storage box, so that the probability of accumulation of the concrete at the lower end of the inner side wall of the cylinder body is reduced;

3. the third motor and the cam are matched for use, so that the stirring group can vibrate up and down while rotating, vibration can play a role in jolting concrete and assisting in stirring, gaps among concrete raw materials are reduced, the containing amount of the concrete in the cylinder body is increased, the one-time operation efficiency is improved, and the working time is shortened.

Drawings

FIG. 1 is a first cross-sectional view of the present invention;

FIG. 2 is a second cross-sectional view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 1 according to the present invention in the X direction;

fig. 5 is a Y-direction partial enlarged view of fig. 2 of the present invention.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.

As shown in fig. 1 to 5, a concrete mixing device comprises a mixing tank 1, a material raking device 2, a mixing device 3 and a vibration device 4, wherein the material raking device 2 is installed on the upper end of the inner side wall of the mixing tank 1 in a bilateral symmetry manner, the mixing device 3 is arranged below the material raking device 2, the mixing device 3 is connected with the inner wall of the mixing tank 1 in a sliding fit manner, the vibration device 4 is installed on the middle end of the inner side wall of the mixing tank 1 in a bilateral symmetry manner, and the vibration device 4 is arranged at equal intervals up and down.

The material raking device 2 comprises a first motor 21, a rotating rod 22, a connecting shaft 23, a connecting rod 24 and a material raking plate 25, wherein the first motor 21 is installed at the upper end of the inner side wall of the stirring cylinder 1, one end of the rotating rod 22 is connected with an output shaft of the first motor 21, the other end of the rotating rod 22 is provided with the connecting shaft 23, the connecting rod 24 is installed at the front end of the connecting shaft 23, the lower end face of the connecting rod 24 is fixedly connected with the upper end face of the material raking plate 25, the lower end face of the material raking plate 25 is connected with the stirring device 3 in a sliding fit mode, when, the first motor 21 rotates the rotating rod 22, the rotating cylinder drives the connecting rod 24 to rotate through the connecting shaft 23, and the scraping plate 25 slides back and forth left and right, in the process, the material scraping cylinder pushes the concrete on the stirring device 3 inwards, so that more concrete enters the stirring device 3, and the probability of accumulation of the concrete on the outer side of the upper end of the stirring device 3 in the stirring process is reduced.

The scraping plate 25 is of an arc-shaped structure, a rubber layer is arranged on the lower end face of the scraping plate, the arc-shaped structure can play a role in scraping concrete on the upper end of the stirring device 3 in an all-round mode, the rubber layer increases friction between the lower end face of the scraping plate 25 and the upper end face of the stirring device 3, the rubber layer can deform, the concrete is formed by mixing water, cement and sand, and the rubber layer can reduce the probability of slipping and clamping stagnation of the lower end face of the scraping plate 25 when contacting the concrete.

Agitating unit 3 include No. two motor 31, the pivot 32, card post 33, stirring group 34 and rectangular channel 35, No. two motor 31 are installed at the lower terminal surface middle part of agitator 1, pivot 32 is installed to No. two motor 31's output shaft upper end, bilateral symmetry installs card post 33 on the pivot 32, equidistance is arranged about the card post 33, rectangular channel 35 has been seted up to stirring group 34's inboard bilateral symmetry, link to each other through the sliding fit mode between rectangular channel 35 and the card post 33, link to each other through the sliding fit mode between stirring group 34's the left and right sides and the agitator 1 inside wall, when concrete work, drive pivot 32 through No. two motor 31 and rotate, pivot 32 drives stirring group 34 synchronous rotation through card post 33, incline the concrete in the agitator 1 from directly over stirring group 34 through artifical mode, stirring group 34 team concrete stirs the processing.

The stirring group 34 comprises a first rotating disc 341, a second rotating disc 342, a third rotating disc 343, a trapezoidal groove 344, a circular cover plate 345, a telescopic rod 346 and a pressing block 347, wherein the first rotating disc 341, the second rotating disc 342 and the third rotating disc 343 are sequentially arranged on the rotating shaft 32 from top to bottom through the matching use of the clamping columns 33 and the rectangular grooves 35, the trapezoidal grooves 344 are respectively arranged on the first rotating disc 341, the second rotating disc 342 and the third rotating disc 343, the trapezoidal grooves 344 are uniformly distributed along the circumferential direction of the upper end faces of the three parts, the narrow ends of the trapezoidal grooves 344 are positioned on the inner side, the width of the trapezoidal grooves is gradually increased from inside to outside, the circular cover plates 345 are respectively arranged between the first rotating disc 341 and the second rotating disc 342, and between the second rotating disc 342 and the third rotating disc 343, the lower end faces of the circular cover plates 345 are respectively arranged at the upper ends of the lower end structures thereof, the upper end faces of the circular cover plates 345 are respectively connected with the upper end structures thereof in a sliding fit manner, the outside of briquetting 347 links to each other with telescopic link 346, the outside of telescopic link 346 links to each other with the inside wall of agitator 1, in the stirring process, the concrete is easily swung to the outside under the effect of centrifugal force, and the width of dovetail groove 344 is crescent from inside to outside, and then make more falling into the dovetail groove 344 of outside concrete, reduce the probability that the phenomenon was piled up in the concrete emergence, in the concrete downstream process, circular cover plate 345 plays direction and limiting displacement to it, avoid the concrete to swing to the outside in a large number and cause a small amount of concrete to pass through dovetail groove 344 downstream, improve stirring efficiency.

The circular diameter that trapezoidal groove 344 formed on first carousel 341, No. two carousels 342, No. three carousels 343 from the top reduces gradually, and then forms the structure of falling the pagoda, the structure of falling the pagoda makes the stirring dynamics that the concrete received increase gradually for the stirring is more abundant, improves stirring efficiency.

The upper end surfaces of the second turntable 342 and the third turntable 343 are of concave arc structures, the falling concrete can slide inwards smoothly due to the concave arc structures and fall into the trapezoidal groove 344, and the probability of accumulation of the concrete at the upper ends of the second rotating shaft 32 and the third rotating shaft 32 is reduced.

The vibrating device 4 comprises a third motor 41 and a cam 42, the outer side of the third motor 41 is arranged on the inner side wall of the cylinder body 11, the third motor 41 is positioned between the first rotating disc 341 and the second rotating disc 342, between the second rotating disc 342 and the third rotating disc 343, the third motor 41 is positioned on the outer side of the circular cover plate 345, the cam 42 is arranged at the output shaft end of the third motor 41, the cam 42 is connected with the first rotating disc 341, the second rotating disc 342 and the third rotating disc 343 in a sliding fit mode, in the specific work process, the third motor 41 drives the cam 42 to rotate, in the rotating process, the cam 42 jacks up and pushes down the first rotating disc 341 and the second rotating disc 342, under the high-frequency rotation of the third motor 41, the first rotating disc 341 and the second rotating disc 342 are equivalent to vibrating motion, under the action of the telescopic rod 346, the first rotating disc 341 and the second rotating disc 342 vibrate within a certain range, vibrations can play the effect of jolt ramming and supplementary stirring to the concrete, increases the volume of holding the concrete in cylinder body 11, improves the operating efficiency once.

The mixing tank 1 comprises a tank body 11, a grid plate 12, a supporting seat 13 and a storage tank 14, wherein the grid plate 12 is installed in the middle of the lower end of the tank body 11, the supporting seat 13 is symmetrically installed in front of and behind the lower end face of the tank body 11, the storage tank 14 is installed on the lower end face of the grid plate 12, the storage tank 14 is located between the two supporting seats 13, and the concrete which is mixed can be stored in the storage tank 14 through the grid plate 12 so as to be used in a large amount in the following process.

The inside lower extreme of cylinder body 11 install trapezoidal cover plate 111, the lower terminal surface of trapezoidal cover plate 111 pastes with the up end of grid plate 12 mutually, the concrete among the stirring process is the whipping to the outside under the effect of centrifugal force, when the concrete whipped to the inside wall of trapezoidal cover plate 111 on, because of the side of trapezoidal cover plate 111 is the slope structure, the concrete can be by oneself in landing to storage tank 14 downwards, reduce the probability that the accumulation phenomenon takes place at the 11 inside wall lower extremes of cylinder body for the concrete.

The inside walls of the trapezoidal cover plate 111 and the circular cover plate 345 are smooth surfaces, friction between concrete and the inside walls of the trapezoidal cover plate 111 and the circular cover plate 345 is reduced by the smooth surfaces, the downward sliding speed of the concrete on the inside walls of the trapezoidal cover plate 111 and the circular cover plate 345 is increased, the amount of the concrete falling into the storage tank 14 is increased, and the wave rate is reduced.

When the stirring device works, concrete is poured into the stirring cylinder 1 from the right above the stirring group 34 in a manual mode, meanwhile, the first motor 21 rotates the rotating rod 22, the rotating cylinder drives the connecting rod 24 to rotate through the connecting shaft 23, and then the scraping plate 25 performs left-right reciprocating sliding, in the process, the scraping cylinder pushes the concrete on the stirring device 3 inwards to enable more concrete to enter the stirring device 3, the probability of accumulation of the concrete on the outer side of the upper end of the stirring device 3 in the stirring process is reduced, the second motor 31 drives the rotating shaft 32 to rotate, the rotating shaft 32 drives the first rotating disc 341, the second rotating disc 342 and the third rotating disc 343 to synchronously rotate through the clamping column 33, the third motor 41 drives the cam 42 to rotate, in the rotating process, the cam 42 performs jacking and pushing operations on the first rotating disc 341 and the second rotating disc 342, and under the high-frequency rotation of the third motor 41, the first rotating disc 341 and the second rotating disc 342 are equivalent to vibrating movement, under the action of the telescopic rod 346, the first rotating disc 341 and the second rotating disc 342 vibrate within a certain range, the vibration can play a role in jolting and assisting in stirring concrete, under the coordination of the rotation caused by the first motor 21 and the rotating shaft 32 and the vibration caused by the third motor 41 and the cam 42, the first rotating disc 341, the second rotating disc 342 and the third rotating disc 343 stir and jolt the concrete, the amount of the concrete contained in the cylinder body 11 is increased, the work efficiency of one time is improved, the stirred concrete can be stored in the storage box 14 through the grid plates 12 for subsequent large-scale use, the concrete is easy to swing outwards under the action of centrifugal force in the stirring process, the width of the trapezoidal groove 344 is gradually increased from inside to outside, and more concrete on the outer side falls into the trapezoidal groove 344, the probability of accumulation of concrete is reduced, the round cover plate 345 plays a role in guiding and limiting the concrete, a small amount of concrete is prevented from downwards moving through the trapezoid-shaped groove 344 due to the fact that the concrete is thrown outwards in a large amount, and stirring efficiency is improved.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a concrete mixing device, includes that churn (1), take off material device (2), agitating unit (3) and vibrator (4), its characterized in that: the stirring device comprises a stirring cylinder (1), wherein material raking devices (2) are symmetrically arranged at the upper end of the inner side wall of the stirring cylinder (1) from left to right, stirring devices (3) are arranged below the material raking devices (2), the stirring devices (3) are connected with the inner wall of the stirring cylinder (1) in a sliding fit manner, vibrating devices (4) are symmetrically arranged at the middle end of the inner side wall of the stirring cylinder (1) from left to right, and the vibrating devices (4) are distributed at equal intervals from top to bottom;

the stirring device (2) comprises a first motor (21), a rotary rod (22), a connecting shaft (23), a connecting rod (24) and a stirring plate (25), wherein the first motor (21) is installed at the upper end of the inner side wall of the stirring cylinder (1), one end of the rotary rod (22) is connected with an output shaft of the first motor (21), the other end of the rotary rod (22) is provided with the connecting shaft (23), the front end of the connecting shaft (23) is provided with the connecting rod (24), the lower end face of the connecting rod (24) is fixedly connected with the upper end face of the stirring plate (25), and the lower end face of the stirring plate (25) is connected with the stirring device (3) in a sliding fit manner;

the stirring device (3) comprises a second motor (31), a rotating shaft (32), clamping columns (33), a stirring group (34) and rectangular grooves (35), wherein the second motor (31) is installed in the middle of the lower end face of the stirring cylinder (1), the rotating shaft (32) is installed at the upper end of an output shaft of the second motor (31), the clamping columns (33) are installed on the rotating shaft (32) in a bilateral symmetry mode, the clamping columns (33) are arranged at equal intervals in the vertical direction, the rectangular grooves (35) are symmetrically formed in the left side and the right side of the stirring group (34), the rectangular grooves (35) are connected with the clamping columns (33) in a sliding fit mode, and the left side and the right side of the stirring group (34) are connected with the inner side wall of the stirring cylinder (1);

the stirring group (34) comprises a first rotating disc (341), a second rotating disc (342), a third rotating disc (343), a trapezoidal groove (344), a circular cover plate (345), a telescopic rod (346) and a pressing block (347), wherein the first rotating disc (341), the second rotating disc (342) and the third rotating disc (343) are sequentially installed on the rotating shaft (32) from top to bottom through matching of clamping columns (33) and rectangular grooves (35), the trapezoidal grooves (344) are formed in the first rotating disc (341), the second rotating disc (342) and the third rotating disc (343), the trapezoidal grooves (344) are uniformly distributed along the circumferential direction of the upper end faces of the first rotating disc, the second rotating disc (342) and the third rotating disc (343), the narrow ends of the trapezoidal grooves (344) are located on the inner side, the width of the trapezoidal grooves is gradually increased from inside to outside, the circular cover plate (345) is arranged between the first rotating disc (341) and the second rotating disc (342), the circular cover plate (345) is arranged between the third rotating disc (343), and, the upper end surface of the circular cover plate (345) is connected with the upper end structure thereof in a sliding fit mode, the outsides of the upper end surface and the lower end surface of the first turntable (341) and the second turntable (342) are symmetrically connected with pressing blocks (347), the outsides of the pressing blocks (347) are connected with a telescopic rod (346), and the outside of the telescopic rod (346) is connected with the inner side wall of the stirring cylinder (1);

vibrator (4) include No. three motor (41) and cam (42), install on the inside wall of cylinder body (11) in the outside of No. three motor (41), No. three motor (41) are located between a carousel (341) and No. two carousel (342), between No. two carousel (342) and No. three carousel (343), and No. three motor (41) are located the outside of circular cover plate (345), cam (42) are installed to the output axle head of No. three motor (41), all link to each other through sliding fit between cam (42) and a carousel (341), No. two carousel (342), No. three carousel (343).

2. A concrete mixing apparatus according to claim 1, wherein: the stirring cylinder (1) comprises a cylinder body (11), a grid plate (12), supporting seats (13) and a storage box (14), wherein the grid plate (12) is arranged in the middle of the lower end of the cylinder body (11), the supporting seats (13) are symmetrically arranged in front of and behind the lower end face of the cylinder body (11), the storage box (14) is arranged on the lower end face of the grid plate (12), and the storage box (14) is located between the two supporting seats (13).

3. A concrete mixing apparatus according to claim 2, wherein: the lower end of the interior of the cylinder body (11) is provided with a trapezoidal cover plate (111), and the lower end face of the trapezoidal cover plate (111) is attached to the upper end face of the grid plate (12).

4. A concrete mixing apparatus according to claim 1, wherein: the scraping plate (25) is of an arc-shaped structure, and a rubber layer is arranged on the lower end face of the scraping plate.

5. A concrete mixing apparatus according to claim 1, wherein: the upper end surfaces of the second turntable (342) and the third turntable (343) are of concave arc structures.

6. A concrete mixing apparatus according to claim 3, wherein: the inner side walls of the trapezoidal cover plate (111) and the circular cover plate (345) are smooth surfaces.

7. A concrete mixing apparatus according to claim 1, wherein: the diameter of the circle formed by the trapezoid grooves (344) on the first turntable (341), the second turntable (342) and the third turntable (343) is gradually reduced from top to bottom, and then the inverted pagoda structure is formed.