Concrete mixer

Abstract

The utility model discloses a concrete mixer which comprises a mixing tank, a main mixing shaft is vertically and rotatably connected in the mixing tank, a plurality of main mixing wheels are fixedly sleeved on the main mixing shaft, and a driving motor is arranged at the bottom of the mixing tank; three auxiliary stirring shafts are vertically arranged in the stirring tank, the three auxiliary stirring shafts are distributed around the main stirring shaft at intervals of 120 degrees, each auxiliary stirring shaft is fixedly sleeved with a plurality of auxiliary stirring wheels, three receding holes are formed in the top of the stirring tank in a penetrating mode, and the tops of the three auxiliary stirring shafts penetrate through the corresponding receding holes respectively; a supporting frame is arranged at the top of the stirring tank, the tops of the three auxiliary stirring shafts are rotationally connected with the supporting frame, three servo motors are arranged on the supporting frame, and the three servo motors are used for controlling the corresponding auxiliary stirring shafts to rotate. According to the utility model, the mixing and stirring effect on materials can be improved, the relative movement effect between the materials is promoted, the materials can be fully mixed and stirred, the production efficiency can be improved, and the product quality can also be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of concrete production and processing, in particular to a concrete mixer. BACKGROUND

[0002] The mixer is a kind of construction machinery, mainly used for mixing cement, sand, various dry powder mortar and other building materials, and is widely used in civil engineering.

[0003] The concrete mixer in the prior art generally comprises a mixing tank, a stirring shaft is vertically rotatably connected in the mixing tank, a plurality of stirring wheels are arranged on the stirring shaft, and a driving motor for controlling the rotation of the stirring shaft is arranged on the mixing tank.The driving motor controls the stirring shaft to drive the plurality of stirring wheels to rotate, and then the plurality of stirring wheels can mix and stir the materials.

[0004] However, the single-shaft concrete mixer has poor mixing effect on materials, that is, the materials located at the edge of the mixing tank are difficult to fully mix and stir, which affects the production efficiency and product quality, and needs to be improved. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a concrete mixer that can improve the mixing and stirring effect on materials, promote the relative movement effect between materials, make the materials fully mix and stir, improve the production efficiency and product quality.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a concrete mixer, comprising a mixing tank, a feeding end is arranged at the upper end of the mixing tank, and a discharging end is arranged at the lower end of the mixing tank, a main stirring shaft is vertically rotatably connected in the mixing tank, a plurality of main stirring wheels are fixedly sleeved on the main stirring shaft, and a driving motor for controlling the rotation of the main stirring shaft is arranged at the bottom of the mixing tank;

[0007] Three auxiliary stirring shafts are vertically arranged in the mixing tank, the three auxiliary stirring shafts are arranged around the main stirring shaft at intervals of 120°, a plurality of auxiliary stirring wheels are fixedly sleeved on each auxiliary stirring shaft, three accommodation holes are formed in the top of the mixing tank, and the top of each auxiliary stirring shaft penetrates through the corresponding accommodation hole;

[0008] A support frame is arranged at the top of the mixing tank, the top of each auxiliary stirring shaft is rotatably connected with the support frame, three servo motors are arranged on the support frame, and each servo motor is used to control the rotation of the corresponding auxiliary stirring shaft.

[0009] Optionally, a support shaft is vertically and fixedly connected to the center of the top of the stirring tank, the support frame is movably sleeved on the support shaft, the three displacement holes are circular arc-shaped respectively, the auxiliary stirring shafts can slide along the corresponding displacement holes, and the support shaft is provided with a control member for controlling the reciprocating rotation of the support frame.

[0010] Optionally, the control member comprises a driving ring movably sleeved on the support shaft, the driving ring is located above the support frame, the driving ring and the support frame are connected through a support portion, the support shaft is fixedly connected with a control motor, a control gear is fixedly sleeved on the output shaft of the control motor, the top of the driving ring is fixedly connected with a control gear ring along the circumference of the driving ring, and the control gear is engaged with the control gear ring.

[0011] Optionally, the support portion comprises a plurality of hydraulic cylinders, the plurality of hydraulic cylinders are equidistantly arranged along the circumference of the driving ring, the base of each hydraulic cylinder is fixedly connected with the driving ring, and the piston end is fixedly connected with the support frame, so that the support frame can reciprocate along the vertical direction while reciprocating.

[0012] Optionally, a protective cover is detachably connected to the top of the stirring tank, and the support frame, the servo motor and the control member are located inside the protective cover.

[0013] Optionally, the stirring blades on each main stirring wheel are arranged in an inclined manner respectively, and the inclined directions of the stirring blades on adjacent two main stirring wheels are opposite.

[0014] Optionally, the stirring blades on each auxiliary stirring wheel are arranged in an inclined manner respectively, and the inclined directions of the stirring blades on adjacent two auxiliary stirring wheels on the same auxiliary stirring shaft are opposite.

[0015] In summary, the utility model has the following beneficial effects:

[0016] 1. The plurality of main stirring wheels on the main stirring shaft and the plurality of auxiliary stirring wheels on the three auxiliary stirring shafts jointly mix and stir the materials, effectively improving the mixing and stirring effect of the materials, and meanwhile, the three auxiliary stirring shafts are located around the main stirring shaft, so that the mixing and stirring of the materials at the edge position of the stirring tank can be realized, the relative movement effect between the materials is promoted, the materials can be fully mixed, the production efficiency is improved, and the product quality is improved.

[0017] 2. The three auxiliary stirring shafts can rotate around the stirring tank while rotating, and the three auxiliary stirring shafts can also reciprocate along the vertical direction, so that the mixing and stirring effect of the materials is significantly improved, the materials can be fully contacted and mixed, and the production efficiency and the product quality are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of the overall structure of the embodiment;

[0019] Figure 2 is a sectional view of the embodiment;

[0020] Figure 3 is a schematic view of the structure of the stirring tank in the embodiment.

[0021] Reference signs: 1, stirring tank; 2, charging end; 3, discharging end; 4, discharging valve; 5, main stirring shaft; 6, main stirring wheel; 7, driving motor; 8, auxiliary stirring shaft; 9, auxiliary stirring wheel; 10, let-in hole; 11, support frame; 12, servo motor; 13, support shaft; 14, control member; 141, driving ring; 142, support part; 143, control motor; 144, control gear; 145, control gear ring; 146, hydraulic cylinder; 15, protective cover. DETAILED DESCRIPTION

[0022] The utility model will be further explained in detail below in combination with the drawings.

[0023] Referring to Figure 1 , Figure 2 , a concrete mixer comprises a stirring tank 1, the upper end of the stirring tank 1 is provided with a charging end 2, the lower end is provided with a discharging end 3, and the discharging end 3 is provided with a discharging valve 4. A main stirring shaft 5 is vertically rotatably connected in the stirring tank 1, a plurality of main stirring wheels 6 are fixedly sleeved on the main stirring shaft 5, a driving motor 7 is arranged at the bottom of the stirring tank 1, and the output shaft of the driving motor 7 is coaxially fixedly connected with the main stirring shaft 5, so that the driving motor 7 can control the rotation of the main stirring shaft 5.

[0024] Referring to Figure 1 , Figure 2 , Figure 3 , three auxiliary stirring shafts 8 are vertically arranged in the stirring tank 1, the three auxiliary stirring shafts 8 are arranged at intervals of 120° around the main stirring shaft 5, and a plurality of auxiliary stirring wheels 9 are fixedly sleeved on each auxiliary stirring shaft 8. At the same time, three let-in holes 10 are arranged through the top of the stirring tank 1, and the tops of the three auxiliary stirring shafts 8 pass through the corresponding let-in holes 10 respectively.

[0025] Referring to Figure 2 , Figure 3 , a support frame 11 is arranged at the top of the stirring tank 1, the tops of the three auxiliary stirring shafts 8 are rotatably connected with the support frame 11 respectively, three servo motors 12 are arranged on the support frame 11, and the output shafts of the three servo motors 12 are coaxially fixedly connected with the corresponding auxiliary stirring shafts 8 respectively, so that the servo motors 12 can control the rotation of the corresponding auxiliary stirring shafts 8.

[0026] The main stirring shaft 5 is controlled by the drive motor 7 to drive the main stirring wheel 6 to rotate. At the same time, the corresponding auxiliary stirring shafts 8 are controlled by three servo motors 12 to drive the auxiliary stirring wheels 9 to rotate. At this time, the multiple main stirring wheels 6 and the multiple auxiliary stirring wheels 9 work together to mix and stir the materials.

[0027] Compared to single-shaft concrete mixers, this design can effectively improve the mixing effect of materials. Since the three auxiliary mixing shafts 8 are located around the main mixing shaft 5, they can achieve mixing of materials at the edge of the mixing tank 1, thereby promoting the relative movement between materials and ensuring that the materials are fully mixed. This not only improves production efficiency but also improves product quality.

[0028] Reference Figure 2 , Figure 3 A support shaft 13 is vertically fixed at the center of the top of the mixing tank 1, and the support frame 11 is movably sleeved on the support shaft 13. Meanwhile, the three clearance holes 10 are respectively arc-shaped, and the auxiliary mixing shaft 8 can slide along the corresponding clearance holes 10. The support shaft 13 is provided with a control component 14 for controlling the reciprocating rotation of the support frame 11.

[0029] When the three auxiliary stirring shafts 8 rotate, the support frame 11 is controlled by the control component 14 to drive the three auxiliary stirring shafts 8 to reciprocate. That is, the three auxiliary stirring shafts 8 slide along the corresponding clearance holes 10 to increase the stirring area of ​​the auxiliary stirring wheel 9, thereby improving the mixing effect of the material, which is beneficial to the relative movement effect between materials, promotes the full mixing of materials, and thus improves production efficiency and product quality.

[0030] Reference Figure 2 , Figure 3 The control component 14 includes a drive ring 141 rotatably sleeved on the support shaft 13. The drive ring 141 is located above the support frame 11, and the drive ring 141 is connected to the support frame 11 through a support part 142. A control motor 143 is fixedly connected to the support shaft 13. A control gear 144 is fixedly sleeved on the output shaft of the control motor 143. A control gear ring 145 is fixedly connected to the top of the drive ring 141 along its circumference, and the control gear 144 meshes with the control gear ring 145.

[0031] Reference Figure 2 , Figure 3 The support part 142 includes a plurality of hydraulic cylinders 146, which are arranged at equal intervals along the circumference of the drive ring 141. The base of each hydraulic cylinder 146 is fixedly connected to the drive ring 141 and the piston end is fixedly connected to the support frame 11, so that the support frame 11 can reciprocate while rotating back and forth, and can also reciprocate in the vertical direction.

[0032] When the support frame 11 drives the three auxiliary stirring shafts 8 to reciprocate, multiple hydraulic cylinders 146 are controlled to extend and retract synchronously, so that the support frame 11 can drive the three auxiliary stirring shafts 8 to reciprocate in the vertical direction, further improving the mixing and stirring effect of the materials, effectively promoting the full mixing of the materials, thereby improving production efficiency and product quality.

[0033] Reference Figure 1 , Figure 2 The top of the mixing tank 1 is detachably connected to a protective cover 15. The support frame 11, servo motor 12, drive ring 141 and control motor 143 are located inside the protective cover 15 to shield and protect each component and improve the stability of each component.

[0034] Reference Figure 2 Each main stirring wheel 6 has its stirring blades arranged at an angle, with the stirring blades on adjacent main stirring wheels 6 tilting in opposite directions. Similarly, each auxiliary stirring wheel 9 has its stirring blades arranged at an angle, with the stirring blades on adjacent auxiliary stirring wheels 9 on the same auxiliary stirring shaft 8 tilting in opposite directions. This promotes relative movement of the material in both horizontal and vertical directions, ensuring thorough mixing.

[0035] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. A concrete mixer comprising a mixing drum (1), the upper end of said mixing drum (1) being provided with a charging end (2) and the lower end being provided with a discharging end (3), characterized in that: The stirring tank (1) is vertically connected with a main stirring shaft (5), a plurality of main stirring wheels (6) are fixedly sleeved on the main stirring shaft (5), and a drive motor (7) for controlling the rotation of the main stirring shaft (5) is arranged at the bottom of the stirring tank (1); Three auxiliary stirring shafts (8) are vertically arranged in the stirring tank (1), the three auxiliary stirring shafts (8) are arranged at intervals of 120° around the main stirring shaft (5), a plurality of auxiliary stirring wheels (9) are fixedly sleeved on each auxiliary stirring shaft (8), and three accommodation holes (10) are arranged at the top of the stirring tank (1), and the top of each auxiliary stirring shaft (8) penetrates through the corresponding accommodation hole (10). A support frame (11) is arranged at the top of the stirring tank (1), the top of each auxiliary stirring shaft (8) is rotatably connected with the support frame (11), three servo motors (12) are arranged on the support frame (11), and each servo motor (12) is used for controlling the rotation of the corresponding auxiliary stirring shaft (8).

2. A concrete mixer as claimed in claim 1, wherein: A support shaft (13) is vertically and fixedly connected to the central position of the top of the stirring tank (1), the support frame (11) is movably sleeved on the support shaft (13), the three accommodation holes (10) are circular arcs, the auxiliary stirring shaft (8) can slide along the corresponding accommodation hole (10), and the support shaft (13) is provided with a control member (14) for controlling the reciprocating rotation of the support frame (11).

3. A concrete mixer as claimed in claim 2, wherein: The control member (14) comprises a driving ring (141) rotatably sleeved on the support shaft (13), the driving ring (141) is located above the support frame (11), the driving ring (141) and the support frame (11) are connected through a support portion (142), a control motor (143) is fixedly connected to the support shaft (13), a control gear (144) is fixedly sleeved on the output shaft of the control motor (143), the top of the driving ring (141) is fixedly connected with a control gear ring (145) along the circumference thereof, and the control gear (144) is engaged with the control gear ring (145).

4. A concrete mixer as claimed in claim 3, wherein: The support portion (142) comprises a plurality of hydraulic cylinders (146), the plurality of hydraulic cylinders (146) are arranged at equal intervals along the circumference of the driving ring (141), the base of each hydraulic cylinder (146) is fixedly connected with the driving ring (141), and the piston end is fixedly connected with the support frame (11), so that the support frame (11) can reciprocate in the vertical direction while reciprocating.

5. A concrete mixer as claimed in claim 2, wherein: A protective cover (15) is detachably connected to the top of the stirring tank (1), the support frame (11), the servo motor (12) and the control member (14) are located on the inner side of the protective cover (15).

6. A concrete mixer as claimed in claim 1, wherein: The stirring blades on each main stirring wheel (6) are arranged in an inclined manner, and the inclined directions of the stirring blades on adjacent two main stirring wheels (6) are opposite.

7. A concrete mixer as claimed in claim 1, wherein: The stirring blades on each of the auxiliary stirring wheels (9) are arranged in an inclined manner, and the inclined directions of the stirring blades on two adjacent auxiliary stirring wheels (9) on the same auxiliary stirring shaft (8) are opposite.

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