Mixing device for building construction

Abstract

The utility model relates to the technical field of building construction, and discloses a mixing device for building construction, which comprises a first U-shaped frame, a base, a second U-shaped frame, a first rotating shaft, a second rotating shaft, a third rotating shaft, a mixing tank, a driven bevel gear and a driving bevel gear. During use, after the first rotating shaft is driven by external force to rotate, the mixing tank can continuously rotate along the axis of the first rotating shaft. And when the second rotating shaft is driven by external force to keep static, the mixing tank can continuously rotate around the third rotating shaft according to a specific speed ratio. Therefore, the mixing tank can continuously rotate along the two mutually perpendicular axes. Therefore, the materials are turned over and mixed in two directions, and the mixing effect is ensured. In addition, when the second rotating shaft is driven by external force to continuously rotate, the mixing tank can be driven to rotate around the axis of the third rotating shaft. Therefore, the rotating speeds of the mixing tank along the two mutually perpendicular axes can be adjusted respectively so as to be suitable for different mixing works, and the mixing effect is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of building construction, and in particular to a mixing device for building construction. BACKGROUND

[0002] A mixing device for municipal building construction is disclosed in the related technology (publication number: CN222115556U), which comprises a support bottom plate. Two ends of the top of the support bottom plate are fixedly provided with support vertical plates one and two, a mixing tank is arranged between the support vertical plates one and two, one end of the mixing tank is provided with a synchronous driving mechanism, and an agitating mechanism fixedly connected with the mixing tank and the synchronous driving mechanism is rotatably arranged in the mixing tank. One side of the support vertical plate one is fixedly provided with a speed reducer, one side of the mixing tank is fixedly provided with a support shaft one, the other end of the support shaft one is inserted into the support vertical plate one and fixedly connected with the output shaft of the speed reducer. The side of the mixing tank away from the support shaft one is fixedly provided with a support shaft two, and the other end of the support shaft two is inserted into the support vertical plate two and rotatably connected with the support vertical plate two.

[0003] In the process of implementing the technical scheme of the present disclosure, it is found that at least the following problems exist in the related technology:

[0004] The mixing device for building construction can drive the mixing tank to overturn through the design of the speed reducer, the support shaft one and the support shaft two. Then, the synchronous driving mechanism and the agitating mechanism can stir the material while the mixing tank is overturning, thereby improving the mixing effect of the material. However, the rotational speed ratio of the mixing tank and the agitating mechanism is fixed and cannot be adjusted separately.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0006] In order to have a basic understanding of some aspects of the disclosed technical scheme, a brief summary is given below. The summary is not a general review, nor is it intended to determine key / important elements or delineate the scope of protection of the technical scheme, but is intended as a prelude to the detailed description that follows.

[0007] The technical scheme of the present disclosure provides a mixing device for building construction to solve the problems raised in the background technology.

[0008] In some embodiments, the building construction mixing device comprises: a first U-shaped frame; a base installed at the four corners of the horizontal wall of the first U-shaped frame, each for abutting against the ground; a second U-shaped frame located inside the first U-shaped frame; a first rotating shaft rotatably penetrating any vertical wall of the first U-shaped frame and connected to the adjacent vertical wall of the second U-shaped frame; a second rotating shaft drivably penetrating another vertical wall of the first U-shaped frame and another vertical wall of the second U-shaped frame, the second rotating shaft coaxially distributed with the first rotating shaft; a third rotating shaft rotatably penetrating the center of the horizontal wall of the second U-shaped frame; a mixing tank connected to the third rotating shaft, located inside the second U-shaped frame, and coaxially distributed with the third rotating shaft; a driven bevel gear installed on the outer wall of the mixing tank; a driving bevel gear engaged with the driven bevel gear and installed on the second rotating shaft; wherein the first rotating shaft and the second rotating shaft are controlled to rotate simultaneously to continuously rotate the mixing tank along two mutually perpendicular axes.

[0009] Optionally, it further comprises: a speed reducer installed on the bottom surface of the first U-shaped frame and opposite to the first rotating shaft and the second rotating shaft; a first driving pulley installed on the output end of each speed reducer; a first driven pulley installed on the first rotating shaft and the second rotating shaft; and a first belt sleeved between the two first driving pulleys and the two first driven pulleys and penetrating the horizontal wall of the first U-shaped frame; wherein the input ends of the two speed reducers are controlled to rotate simultaneously to rotate the first rotating shaft and the second rotating shaft simultaneously.

[0010] Optionally, it further comprises: a driving motor installed on the bottom surface of the first U-shaped frame and adjacent to the two speed reducers; a second driving pulley installed on the rotating end of each driving motor; a second driven pulley installed on the input end of each speed reducer; and a second belt sleeved between the two second driving pulleys and the two second driven pulleys; wherein the diameters of the two second driving pulleys are smaller than the diameters of the two second driven pulleys.

[0011] Optionally, it further comprises: a sealing cover detachably installed on the pouring opening of the mixing tank for opening or closing the tank opening of the mixing tank.

[0012] Optionally, it further comprises: a blade uniformly installed on the tank bottom of the mixing tank and located inside the mixing tank.

[0013] Optionally, it further comprises: a flange plate installed at the connection between the third rotating shaft and the mixing tank.

[0014] Optionally, further comprising a first bearing installed between the first rotating shaft and the vertical wall of the first U-shaped frame.

[0015] Optionally, further comprising a second bearing installed between the second rotating shaft and the vertical wall of the first U-shaped frame and the vertical wall of the second U-shaped frame respectively.

[0016] Optionally, further comprising a bearing seat installed on the horizontal wall of the second U-shaped frame and sleeved on the third rotating shaft, and a third bearing installed between the bearing seat and the third rotating shaft.

[0017] The building construction mixing device provided by the technical scheme of the present disclosure can achieve the following technical effects:

[0018] The building construction mixing device provided by the technical scheme of the present disclosure comprises a first U-shaped frame, a base, a second U-shaped frame, a first rotating shaft, a second rotating shaft, a third rotating shaft, a mixing tank, a driven bevel gear and a driving bevel gear. The base is installed at the four corners of the horizontal wall of the first U-shaped frame and used to abut against the ground to support the whole device. The second U-shaped frame is located at the inner side of the first U-shaped frame, and the symmetry axes of the first U-shaped frame and the second U-shaped frame coincide with each other. The first rotating shaft is rotatably arranged in any vertical wall of the first U-shaped frame and connected to the adjacent vertical wall of the second U-shaped frame, so as to rotate relative to the first U-shaped frame and drive the second U-shaped frame to rotate. The second rotating shaft is rotatably arranged in another vertical wall of the first U-shaped frame and another vertical wall of the second U-shaped frame, so as to rotate relative to the first U-shaped frame and the second U-shaped frame respectively. The second rotating shaft is coaxial with the first rotating shaft. The third rotating shaft is rotatably arranged at the center of the horizontal wall of the second U-shaped frame and rotates relative to the second U-shaped frame. The mixing tank is connected to the third rotating shaft, located at the inner side of the second U-shaped frame and coaxial with the third rotating shaft. The mixing tank rotates relative to the second U-shaped frame under the support of the third rotating shaft. The driven bevel gear is installed on the outer wall of the mixing tank and used to drive the mixing tank to rotate. The driving bevel gear is engaged with the driven bevel gear, and the two gears jointly transmit driving force and improve the direction of the force. The driven bevel gear is installed on the second rotating shaft and rotates under the driving of the second rotating shaft. The first rotating shaft and the second rotating shaft are controlled to rotate simultaneously, so as to continuously rotate the mixing tank along two mutually perpendicular axes.

[0019] When in use, the first rotating shaft is driven to rotate by an external force, and then drives the second bracket to rotate. Then, the mixing tank can continuously rotate along the axis of the first rotating shaft under the support of the third rotating shaft. When the second rotating shaft is driven to remain static by an external force, the mixing tank can continuously rotate around the third rotating shaft at a specific speed ratio under the meshing action between the driving bevel gear and the driven bevel gear and the support of the third rotating shaft. Therefore, the mixing tank can continuously rotate along two perpendicular axes. Thus, the material is turned and mixed in two directions, ensuring the mixing effect. When the second rotating shaft is continuously driven by an external force, the driving bevel gear is driven to rotate. Through the meshing action between the teeth, the driven bevel gear is driven to rotate, and then the mixing tank is driven to rotate around the axis of the third rotating shaft. Therefore, the rotating speed of the mixing tank along the two perpendicular axes can be adjusted respectively to adapt to different mixing work, improving the mixing effect.

[0020] The foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application. BRIEF DESCRIPTION OF DRAWINGS

[0021] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the application as defined by the claims and their equivalents. Identical reference numbers in the figures indicate similar elements providing similar functionality. The drawings are not necessarily to scale, and in some instances proportions have been exaggerated in order more clearly to depict salient features. Wherever possible, like reference numbers have been used throughout the drawings to refer to like elements.

[0022] Figure 1 is a sectional view of a mixing device for building construction provided by an embodiment of the present disclosure;

[0023] Figure 2 is Figure 1 is an enlarged view of position A in FIG. 1;

[0024] Figure 3 is Figure 1 is an enlarged view of position B in FIG. 1;

[0025] Figure 4 is Figure 1 is an enlarged view of position C in FIG. 1;

[0026] Figure 5 is a front view of a mixing device for building construction provided by an embodiment of the present disclosure.

[0027] LIST OF REFERENCE NUMBERS

[0028] 1: first U-shaped frame; 2: base; 3: second U-shaped frame; 4: first rotating shaft; 5: second rotating shaft; 6: third rotating shaft; 7: mixing tank; 8: driven bevel gear; 9: driving bevel gear; 10: speed reducer; 11: first driving pulley; 12: first driven pulley; 13: first belt; 14: driving motor; 15: second driving pulley; 16: second driven pulley; 17: second belt; 18: sealing cover; 19: blade; 20: flange plate; 21: first bearing; 22: second bearing; 23: bearing seat; 24: third bearing. DETAILED DESCRIPTION

[0029] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below, and the attached drawings are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, through multiple details, a sufficient understanding of the disclosed embodiments is provided. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0030] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0031] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. And, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0032] In addition, the terms "set", "connected", and "fixed" should be interpreted broadly. For example, "connected" can be fixed connection, detachable connection, or integral configuration; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium, or internal connection between two devices, elements or components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present disclosure according to the specific circumstances.

[0033] Unless otherwise specified, the term "plurality" means two or more.

[0034] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B means A or B.

[0035] The term "and / or" is a description of the relationship between the objects, which means that there can be three relationships. For example, A and / or B means that there are three relationships of A or B, or A and B.

[0036] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0037] In combination with Figures 1 to 5As shown, the building construction mixing device provided by the embodiment of the present disclosure comprises a first U-shaped frame 1, a base 2, a second U-shaped frame 3, a first rotating shaft 4, a second rotating shaft 5, a third rotating shaft 6, a mixing tank 7, a driven bevel gear 8 and a driving bevel gear 9. The base 2 is respectively installed at the four corners of the horizontal wall of the first U-shaped frame 1, and is used for abutting against the ground to support the whole device. The second U-shaped frame 3 is located at the inner side of the first U-shaped frame 1, and the symmetry axes of the first U-shaped frame 1 and the second U-shaped frame 3 coincide with each other. The first rotating shaft 4 is rotatably arranged in any vertical wall of the first U-shaped frame 1, and is connected to the adjacent vertical wall of the second U-shaped frame 3, so as to rotate relative to the first U-shaped frame 1 and drive the second U-shaped frame 3 to rotate. The second rotating shaft 5 is rotatably arranged in another vertical wall of the first U-shaped frame 1 and another vertical wall of the second U-shaped frame 3, and can rotate relative to the first U-shaped frame 1 and the second U-shaped frame 3 respectively. The second rotating shaft 5 is coaxially arranged with the first rotating shaft 4. The third rotating shaft 6 is rotatably arranged at the center of the horizontal wall of the second U-shaped frame 3, and can rotate relative to the second U-shaped frame 3. The mixing tank 7 is connected to the third rotating shaft 6, is located at the inner side of the second U-shaped frame 3, and is coaxially arranged with the third rotating shaft 6. The mixing tank 7 can rotate relative to the second U-shaped frame 3 under the support of the third rotating shaft 6. The driven bevel gear 8 is installed on the outer wall of the mixing tank 7, and is used to drive the mixing tank 7 to rotate. The driving bevel gear 9 is engaged with the driven bevel gear 8, and the two gears jointly transmit driving force and improve the direction of the force. The driven bevel gear 8 is installed on the second rotating shaft 5, and rotates under the driving of the second rotating shaft 5. The first rotating shaft 4 and the second rotating shaft 5 are controlled to rotate simultaneously, so as to continuously rotate the mixing tank 7 along two mutually perpendicular axes.

[0038] The building construction mixing device provided by the embodiment of the present disclosure can drive the second U-shaped frame 3 to rotate after the first rotating shaft 4 rotates under the driving of external force. Then, the mixing tank 7 can continuously rotate along the axis of the first rotating shaft 4 under the support of the third rotating shaft 6. When the second rotating shaft 5 is driven to remain stationary, the mixing tank 7 can continuously rotate around the third rotating shaft 6 at a specific speed ratio under the meshing action between the driving bevel gear 9 and the driven bevel gear 8 and the support of the third rotating shaft 6. Therefore, the mixing tank 7 can continuously rotate along two mutually perpendicular axes. Thus, the material can be turned and mixed in two directions, so as to ensure the mixing effect. When the second rotating shaft 5 is continuously driven to rotate, the driving bevel gear 9 can be driven to rotate. Through the meshing action between the teeth, the driven bevel gear 8 can be driven to rotate, and then the mixing tank 7 can be driven to rotate around the axis of the third rotating shaft 6. Therefore, the rotating speed of the mixing tank 7 along two mutually perpendicular axes can be adjusted respectively, so as to be suitable for different mixing work and improve the mixing effect.

[0039] Optionally, in combination with Figure 1 and Figure 5As shown, the device further comprises two reducers 10, a first driving pulley 11, a first driven pulley 12 and a first belt 13. The two reducers 10 are installed on the bottom surface of the first U-shaped frame 1 and are opposite to the first rotating shaft 4 and the second rotating shaft 5 respectively. The two reducers 10 are used to reduce rotating speed. The first driving pulleys 11 are installed on the output ends of the two reducers 10 respectively and rotate under the driving of the output ends of the two reducers 10 respectively. The first driven pulleys 12 are installed on the first rotating shaft 4 and the second rotating shaft 5 respectively and are used to drive the first rotating shaft 4 and the second rotating shaft 5 to rotate respectively. The first belts 13 are sleeved between the two first driving pulleys 11 and the two first driven pulleys 12 respectively and pass through the horizontal wall of the first U-shaped frame 1 and are used to transmit driving force respectively. The input ends of the two reducers 10 are controlled to rotate simultaneously so that the first rotating shaft 4 and the second rotating shaft 5 rotate simultaneously.

[0040] In the embodiment of the present disclosure, after the input ends of the two reducers 10 are driven to rotate by external force, the output ends of the two reducers 10 can drive the two first driving pulleys 11 to rotate. Through the two first belts 13, the two first driven pulleys 12 can be driven to rotate, and then the first rotating shaft 4 and the second rotating shaft 5 are driven to rotate respectively. Moreover, the design that the two reducers 10 are installed on the bottom surface of the first U-shaped frame can reduce the horizontal space occupation of the device.

[0041] Optionally, as shown in Figure 1 and Figure 5 As shown, the device further comprises a driving motor 14, a second driving pulley 15, a second driven pulley 16 and a second belt 17. The driving motor 14 is installed on the bottom surface of the first U-shaped frame and is adjacent to the two reducers 10 respectively and is used to provide driving force to realize rotating motion function. The second driving pulleys 15 are installed on the rotating ends of the two driving motors 14 and rotate under the driving of the two driving motors 14 respectively. The second driven pulleys 16 are installed on the input ends of the two reducers 10 respectively and are used to drive the input ends of the two reducers 10 to rotate. The second belts 17 are sleeved between the two second driving pulleys 15 and the two second driven pulleys 16 respectively and are used to transmit driving force respectively. The diameters of the two second driving pulleys 15 are smaller than the diameters of the two second driven pulleys 16.

[0042] In the embodiments of the present disclosure, the two driving motors 14 are controlled to work, so as to drive the two second driving pulleys 15 to rotate respectively. The two second driven pulleys 16 are driven to rotate through the two second belts 17. The two first driving pulleys 11 are driven to rotate through the two reducers 10. The two first driven pulleys 12 are driven to rotate through the two first belts 13, so as to drive the two first rotating shafts 4 and the two second rotating shafts 5 to rotate automatically respectively. One of the first rotating shaft 4 and the second rotating shaft 5 is kept rotating and the other is kept stationary by controlling one of the two driving motors 14 to work and the other to keep stationary, so as to keep the stirring tank stationary around the axis of the first rotating shaft 4 or the third rotating shaft 6, and realize the continuous rotation function around one axis.

[0043] Optionally, as shown in Figure 1 and Figure 5 , the sealing cover 18 is further included. The sealing cover 18 is detachably installed on the pouring opening of the mixing tank 7, and is used to open or close the tank opening of the mixing tank 7.

[0044] In the embodiments of the present disclosure, the sealing cover 18 is detachably installed on the pouring opening of the mixing tank 7, and is used to open or close the tank opening of the mixing tank 7. When the pouring opening of the mixing tank 7 is in the closed state, the mixed material can be prevented from spilling out of the tank opening. When the pouring opening of the mixing tank 7 is in the open state, the mixed material can be discharged from the pouring opening.

[0045] Optionally, as shown in Figure 1 , the blades 19 are further included. The blades 19 are uniformly installed on the tank bottom of the mixing tank 7 and are located inside the mixing tank 7.

[0046] In the embodiments of the present disclosure, the blades 19 are uniformly installed on the tank bottom of the mixing tank 7 and are located inside the mixing tank 7. The blades 19 are used to stir and drive the mixed material to move, so as to improve the mixing effect of the material.

[0047] Optionally, as shown in Figure 1 and Figure 5 , the flange plate 20 is further included. The flange plate 20 is installed at the connection between the third rotating shaft 6 and the mixing tank 7.

[0048] In the embodiments of the present disclosure, the flange plate 20 is installed at the connection between the third rotating shaft 6 and the mixing tank 7. The flange plate 20 is used to improve the connection effect of the third rotating shaft 6 and the mixing tank 7, and reduce the risk of deformation or cracking at the connection between the third rotating shaft 6 and the mixing tank 7.

[0049] Optionally, as shown in Figure 1 and Figure 2 , the first bearing 21 is further included. The first bearing 21 is installed between the first rotating shaft 4 and the vertical wall of the first U-shaped frame 1.

[0050] In the embodiments of the present disclosure, a first bearing 21 is further arranged between the first rotating shaft 4 and the vertical wall of the first U-shaped frame 1. The first bearing 21 is used to reduce the friction between the first rotating shaft 4 and the first U-shaped frame 1, and improve the rotation accuracy of the first rotating shaft 4 relative to the first U-shaped frame 1.

[0051] Optionally, as shown in Figure 1 and Figure 3 a second bearing 22 is further arranged. The second bearing 22 is arranged between the second rotating shaft 5 and the vertical wall of the first U-shaped frame 1 and the vertical wall of the second U-shaped frame 3, respectively.

[0052] In the embodiments of the present disclosure, a second bearing 22 is further arranged between the second rotating shaft 5 and the vertical wall of the first U-shaped frame 1 and the vertical wall of the second U-shaped frame 3, respectively. The second bearing 22 is used to reduce the friction between the second rotating shaft 5 and the first U-shaped frame 1 and the second U-shaped frame 3, and improve the rotation accuracy of the second rotating shaft 5 relative to the first U-shaped frame 1 and the second U-shaped frame 3.

[0053] Optionally, as shown in Figure 1 and Figure 4 a bearing seat 23 and a third bearing 24 are further arranged. The bearing seat 23 is arranged on the horizontal wall of the second U-shaped frame 3 and sleeved on the third rotating shaft 6. The third bearing 24 is arranged between the bearing seat 23 and the third rotating shaft 6.

[0054] In the embodiments of the present disclosure, after the bearing seat 23 is arranged on the horizontal wall of the second U-shaped frame 3, the bearing seat 23 is used to support and limit the third bearing 24. The third bearing 24 is used to support and install the third rotating shaft 6, reduce the friction of the third rotating shaft 6, and improve the rotation accuracy of the third rotating shaft 6.

[0055] The above description and drawings sufficiently show the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments represent only the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A mixing device for construction work, characterized by comprising: It comprises: a first U-shaped frame; a base installed at the four corners of the horizontal wall of the first U-shaped frame respectively, and used to abut against the ground; a second U-shaped frame located inside the first U-shaped frame; a first rotating shaft rotatably penetrating through any vertical wall of the first U-shaped frame and connected to the adjacent vertical wall of the second U-shaped frame; a second rotating shaft drivably penetrating through another vertical wall of the first U-shaped frame and another vertical wall of the second U-shaped frame, and coaxially distributed with the first rotating shaft; a third rotating shaft rotatably penetrating through the center of the horizontal wall of the second U-shaped frame; a mixing tank connected to the third rotating shaft, located inside the second U-shaped frame, and coaxially distributed with the third rotating shaft; a driven bevel gear installed on the outer wall of the mixing tank; a driving bevel gear engaged with the driven bevel gear and installed on the second rotating shaft; wherein the first rotating shaft and the second rotating shaft are controlled to rotate simultaneously to continuously rotate the mixing tank along two mutually perpendicular axes.

2. A mixing device for building construction according to claim 1, characterized in that It further comprises: a speed reducer installed on the bottom surface of the first U-shaped frame and opposite to the first rotating shaft and the second rotating shaft respectively; a first driving pulley installed on the output end of each speed reducer; a first driven pulley installed on the first rotating shaft and the second rotating shaft respectively; a first belt sleeved between the two first driving pulleys and the two first driven pulleys respectively, and penetrating through the horizontal wall of the first U-shaped frame; wherein the input ends of the two speed reducers are controlled to rotate simultaneously to rotate the first rotating shaft and the second rotating shaft simultaneously.

3. A mixing device for building construction according to claim 2, wherein It further comprises: a driving motor installed on the bottom surface of the first U-shaped frame and adjacent to the two speed reducers respectively; a second driving pulley installed on the rotating end of each driving motor; a second driven pulley installed on the input end of each speed reducer; a second belt sleeved between the two second driving pulleys and the two second driven pulleys respectively; wherein the diameter size of the two second driving pulleys is smaller than that of the two second driven pulleys.

4. The mixing device for building construction according to claim 1, wherein It further comprises: a sealing cover detachably installed on the pouring opening of the mixing tank to open or close the tank opening of the mixing tank.

5. The mixing device for building construction according to claim 1, wherein It further comprises: a blade uniformly installed on the tank bottom of the mixing tank and located inside the mixing tank.

6. The mixing device for building construction according to claim 1, wherein It further comprises: a flange plate installed at the connection between the third rotating shaft and the mixing tank.

7. A mixing device for building construction according to any one of claims 1 to 6, characterized in that It further comprises: a first bearing installed between the first rotating shaft and the vertical wall of the first U-shaped frame.

8. A mixing device for building construction according to any one of claims 1 to 6, characterized in that It further comprises: a second bearing installed between the second rotating shaft and the vertical wall of the first U-shaped frame and the vertical wall of the second U-shaped frame respectively.

9. A mixing device for building construction according to any one of claims 1 to 6, characterized in that It further comprises: a bearing seat installed on the horizontal wall of the second U-shaped frame and sleeved on the third rotating shaft; a third bearing installed between the bearing seat and the third rotating shaft.

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