Concrete stirring device for constructional engineering

Abstract

The utility model belongs to the technical field of constructional engineering, and particularly relates to a concrete stirring device for constructional engineering, which comprises a stirring barrel and a motor, the motor is fixedly connected to the top surface of the stirring barrel, an output shaft of the motor penetrates through the top surface of the stirring barrel and extends into the stirring barrel, and the output shaft of the motor is fixedly connected with a spiral blade stirring rod. The spiral blade stirring rod is positioned in an inner cavity of the stirring barrel and is rotationally connected with the inner cavity of the stirring barrel; the fixed support is fixedly connected to the peripheral side of the top of the spiral blade stirring rod, the bottom surface of the fixed support is rotationally connected with a plurality of stirring rods, and the plurality of stirring rods are located in the inner cavity of the stirring barrel; according to the concrete stirring device, the problems that when the concrete stirring device is used, the stirring mode is single, concrete raw materials and water are only stirred through the spiral stirring blades, the concrete raw materials and the water cannot be quickly stirred into usable concrete, and the stirring efficiency is low are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction engineering, in particular to a concrete mixing device for construction engineering. Background Art

[0002] A concrete mixing plant, also known as a concrete mixing station (building), is a complete set of equipment used to measure cement, aggregates (such as sand and gravel), water, admixtures, and other materials according to the concrete mix ratio requirements and then mix them into qualified concrete through a mixer. This device plays a vital role in concrete construction and is an indispensable piece of equipment in the modern construction industry.

[0003] For example, the Chinese patent with the announcement number CN203092761U discloses a concrete mixing device. The utility model solves the problems of existing concrete mixing devices, such as easy retention of concrete in the tank body, inability to monitor the temperature inside the tank body in real time, and easy breakage of the mixing blades. A feed port is provided at the top of the tank body, the bottom of the tank body is an inverted cone, a discharge port is provided at the bottom of the tank body, a stirring shaft is vertically arranged in the tank body, the upper end of the stirring shaft passes through the tank body and is connected to the motor, the lower end of the stirring shaft is a free end placed at the bottom of the tank body, a spiral stirring blade is mounted on the stirring shaft, a water pipe is provided at the top of the tank body, a temperature sensor is mounted on the inner wall of the upper part of the tank body, the temperature sensor is connected to a display screen placed outside the tank body via a data output line, and the intersection of the data output line and the tank body is sealed. The utility model is used for mixing concrete. The utility model has a simple structure, is easy to use, and has low cost.

[0004] The above patent has the following problems:

[0005] This patent has some shortcomings when used. For example, the concrete mixing device has a relatively simple mixing method when in use. It simply stirs the concrete raw materials and water through spiral mixing blades. It cannot quickly mix the concrete raw materials and water into usable concrete, and the mixing efficiency is low. In view of this, we propose a concrete mixing device for construction engineering. Utility Model Content

[0006] The purpose of the present utility model is to provide a concrete mixing device for construction engineering to solve the problems raised in the above background technology.

[0007] In view of this, the present invention provides a concrete mixing device for construction engineering, comprising:

[0008] A mixing barrel and a motor, wherein the motor is fixedly connected to the top surface of the mixing barrel, and the output shaft of the motor passes through the top surface of the mixing barrel and extends into the mixing barrel, and a spiral blade stirring rod is fixedly connected to the output shaft of the motor, and the spiral blade stirring rod is located in the inner cavity of the mixing barrel and is rotatably connected to the inner cavity of the mixing barrel;

[0009] A fixed bracket, the fixed bracket being fixedly connected to the top circumference of the spiral blade stirring rod, the bottom surface of the fixed bracket being rotatably connected to a plurality of stirring rods, and the plurality of stirring rods being located in the inner cavity of the stirring barrel;

[0010] a first rotating groove, the first rotating groove being formed on the top surface of the inner wall of the mixing barrel, a rotating block being rotatably connected in the first rotating groove, a first gear ring being fixedly connected to the bottom surface of the rotating block, a plurality of first gears being meshed in an inner cavity of the first gear ring and rotating with the top surface of the fixed bracket, and the bottom ends of the plurality of first gears passing through the top surface of the fixed bracket and extending into the fixed bracket to be fixed to the top ends of the plurality of stirring rods respectively;

[0011] A transmission assembly, which is located in the mixing barrel and is used to drive the rotating block to rotate;

[0012] A plurality of fixing rods, wherein the plurality of fixing rods are fixedly connected to the bottom surface of the first gear ring, and a plurality of scrapers are respectively provided on one side of the plurality of fixing rods;

[0013] A plurality of pulling components are respectively located in a plurality of fixing rods and are respectively used to drive a plurality of scrapers to move.

[0014] Based on the above structure, by providing a motor and a spiral blade stirring rod, it is ensured that when the motor is started, the output shaft of the motor can drive the spiral blade stirring rod to rotate in the inner cavity of the mixing barrel, so that the spiral blade stirring rod can preliminarily stir the concrete raw materials and water in the mixing barrel. By providing a fixed bracket and a stirring rod, it is ensured that when the spiral blade stirring rod rotates, the spiral blade stirring rod can drive multiple stirring rods to rotate in the inner cavity of the mixing barrel through the fixed bracket. By providing a first rotating groove and a rotating block, it is ensured that the rotating block can rotate in the first rotating groove. By providing a transmission assembly, it is ensured that when the motor is started, the motor will also drive the rotating block to rotate in the first rotating groove. By providing a first gear ring and a first gear, it is ensured that when the rotating When the moving block rotates in the opposite direction, the rotating block can drive the first gear ring to rotate in the opposite direction, so that the first gear ring drives multiple first gears to rotate, so that the multiple first gears respectively drive multiple stirring rods to rotate in the inner cavity of the mixing barrel, so that the multiple stirring rods can further stir the concrete raw materials and water in the mixing barrel. Through the provided tensioning components and scrapers, it is ensured that the multiple scrapers can be respectively subjected to the tension of the multiple tensioning components and always resist the inner wall of the mixing barrel. Through the provided fixed rod, it is ensured that when the first gear ring rotates, the first gear ring will drive the multiple fixed rods to rotate in the mixing barrel, so that the multiple fixed rods respectively drive the multiple scrapers to scrape off the concrete attached to the inner wall of the mixing barrel, thereby preventing the concrete from sticking to the inner wall of the mixing barrel and causing waste.

[0015] In the above technical solution, further, the transmission assembly includes:

[0016] A second rotating groove, the second rotating groove is opened on the top surface of the inner wall of the first rotating groove, a second gear fixed to the output shaft of the motor is rotatably connected in the second rotating groove, a second gear ring is rotatably connected in the second rotating groove, a third gear is meshed between the second gear and the second gear ring, and the third gear is located in the second rotating groove and is rotatably connected to the second rotating groove.

[0017] In this technical solution, it is ensured that the concrete raw materials and water in the mixing barrel can be quickly mixed to a usable state.

[0018] In the above technical solution, further, the tension component includes:

[0019] Multiple chutes are provided, and the multiple chutes are opened in the fixed rod and connected to the inner cavity of the mixing barrel. Multiple sliders are slidably connected in the multiple chutes, and one end of the multiple sliders is fixed to the scraper. Multiple tension springs are respectively provided on the circumferential sides of the multiple sliders, one end of the tension spring is fixed to the inner wall of the chute, and the other end of the tension spring is fixed to the slider.

[0020] In this technical solution, it is ensured that the multiple sliders can respectively drive the multiple scrapers to always press against the inner wall of the mixing barrel.

[0021] In the above technical solution, further, the output shaft of the motor is rotationally connected to the mixing barrel.

[0022] In this technical solution, it is ensured that the output shaft of the motor can rotate normally in the mixing barrel.

[0023] In the above technical solution, further, the first gear ring is located in the first rotation groove and is rotationally connected to the first rotation groove.

[0024] In this technical solution, it is ensured that the first gear ring can rotate normally in the first rotation groove.

[0025] In the above technical solution, further, the bottom ends of the plurality of first gears are rotatably connected to the fixed bracket.

[0026] In this technical solution, it is ensured that the bottom ends of the plurality of first gears can rotate normally in the fixed bracket.

[0027] In the above technical solution, further, a feed pipe and a discharge pipe are respectively provided on the feed port and the discharge port of the mixing barrel, and a valve is provided on the discharge pipe of the mixing barrel.

[0028] In this technical solution, it is ensured that the user can inject concrete raw materials and water into the mixing barrel through the feed pipe on the mixing barrel, and that after the concrete raw materials and water in the mixing barrel are mixed, the user can open the valve set on the discharge pipe of the mixing barrel to discharge the concrete raw materials and water to the outside.

[0029] The beneficial effects of the utility model are:

[0030] 1. The concrete mixing device for construction engineering, through the motor and the spiral blade stirring rod, ensures that when the motor is started, the output shaft of the motor can drive the spiral blade stirring rod to rotate in the inner cavity of the mixing barrel, so that the spiral blade stirring rod performs preliminary stirring on the concrete raw materials and water in the mixing barrel. The fixed bracket and the stirring rod are provided to ensure that when the spiral blade stirring rod rotates, the spiral blade stirring rod can drive multiple stirring rods to rotate in the inner cavity of the mixing barrel through the fixed bracket. The first rotating groove and the rotating block are provided to ensure that the rotating block can rotate in the first rotating groove. The transmission component is provided to ensure that when the motor is started, the motor will also drive the rotating block to rotate. The movable block rotates in the opposite direction in the first rotating groove. The first gear ring and the first gear are provided to ensure that when the rotating block rotates in the opposite direction, the rotating block can drive the first gear ring to rotate in the opposite direction, so that the first gear ring drives the multiple first gears to rotate, and the multiple first gears respectively drive the multiple stirring rods to rotate in the inner cavity of the mixing barrel, so that the multiple stirring rods can further stir the concrete raw materials and water in the mixing barrel, thereby solving the problem that when the concrete mixing device is in use, its stirring method is relatively simple, that is, the concrete raw materials and water are simply stirred by spiral stirring blades, the concrete raw materials and water cannot be quickly stirred into usable concrete, and the stirring efficiency is low.

[0031] 2. The concrete mixing device for construction projects ensures that the multiple scrapers can be respectively subjected to the tensile forces of the multiple tensile components and always resist the inner wall of the mixing barrel through the provided tensile components and the provided fixed rods ensure that when the first gear ring rotates, the first gear ring will drive the multiple fixed rods to rotate in the mixing barrel, so that the multiple fixed rods respectively drive the multiple scrapers to scrape off the concrete attached to the inner wall of the mixing barrel, thereby preventing the concrete from sticking to the inner wall of the mixing barrel and causing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0033] Figure 2 This is a schematic diagram of the internal structure of the mixing barrel of the utility model;

[0034] Figure 3 This is a schematic cross-sectional view of the mixing barrel of the utility model;

[0035] Figure 4It is a schematic diagram of the explosion structure of the area of the utility model;

[0036] Figure 5 It is a schematic diagram of the internal structure of the fixing rod of the utility model.

[0037] The marks in the figure are:

[0038] 1. Mixing barrel; 2. Motor; 3. Spiral blade stirring rod; 4. Fixed bracket; 5. Stirring rod; 6. First rotating groove; 7. Rotating block; 8. First gear ring; 9. First gear; 10. Fixed rod; 11. Scraper; 12. Second rotating groove; 13. Second gear; 14. Second gear ring; 15. Third gear; 16. Slide groove; 17. Slider; 18. Tension spring. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0040] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0041] It should be noted that the terms "first," "second," etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and that the objects distinguished by "first," "second," etc. are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0042] It should be noted that, in the description of this application, the directions or positional relationships indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional terms do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional terms "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0043] It should be noted that, in the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0044] Example 1:

[0045] See also Figure 1 - Figure 5 As shown, this embodiment provides a concrete mixing device for construction engineering, comprising:

[0046] A mixing barrel 1 and a motor 2, wherein the motor 2 is fixedly connected to the top surface of the mixing barrel 1, and the output shaft of the motor 2 passes through the top surface of the mixing barrel 1 and extends into the mixing barrel 1, and a spiral blade stirring rod 3 is fixedly connected to the output shaft of the motor 2, and the spiral blade stirring rod 3 is located in the inner cavity of the mixing barrel 1 and is rotatably connected to the inner cavity of the mixing barrel 1;

[0047] A fixed bracket 4 is fixedly connected to the top circumference of the spiral blade stirring rod 3. A plurality of stirring rods 5 are rotatably connected to the bottom surface of the fixed bracket 4, and the plurality of stirring rods 5 are located in the inner cavity of the stirring barrel 1;

[0048] A first rotating groove 6 is provided on the top surface of the inner wall of the mixing barrel 1. A rotating block 7 is rotatably connected in the first rotating groove 6. A first gear ring 8 is fixedly connected to the bottom surface of the rotating block 7. A plurality of first gears 9 that rotate with the top surface of the fixed bracket 4 are engaged in the inner cavity of the first gear ring 8. The bottom ends of the plurality of first gears 9 pass through the top surface of the fixed bracket 4 and extend into the fixed bracket 4 to be fixed to the top ends of the plurality of stirring rods 5 respectively;

[0049] The transmission assembly is located in the mixing barrel 1 and is used to drive the rotating block 7 to rotate;

[0050] A plurality of fixing rods 10, the plurality of fixing rods 10 are fixedly connected to the bottom surface of the first gear ring 8, and a plurality of scrapers 11 are respectively provided on one side of the plurality of fixing rods 10;

[0051] Multiple pulling components are respectively located in the multiple fixing rods 10 and are respectively used to drive the multiple scrapers 11 to move.

[0052] Example 2:

[0053] This embodiment provides a concrete mixing device for construction engineering. In addition to the technical solutions of the above embodiments, it also has the following technical features. The transmission assembly includes:

[0054] The second rotating groove 12 is opened on the top surface of the inner wall of the first rotating groove 6. A second gear 13 fixed to the output shaft of the motor 2 is rotatably connected in the second rotating groove 12. A second gear ring 14 is rotatably connected in the second rotating groove 12. A third gear 15 is meshed between the second gear 13 and the second gear ring 14, and the third gear 15 is located in the second rotating groove 12 and is rotatably connected to the second rotating groove 12.

[0055] Among them, when the output shaft of the motor 2 rotates, the output shaft of the motor 2 will also drive the second gear 13 to rotate in the second rotating groove 12, so that the second gear 13 drives the second gear ring 14 to rotate in the second rotating groove 12 through the third gear 15. When the second gear ring 14 rotates in the opposite direction, the second gear ring 14 will drive the rotating block 7 to rotate in the opposite direction in the first rotating groove 6, so that the rotating block 7 drives the first gear ring 8 to rotate in the opposite direction in the first rotating groove 6. When the first gear ring 8 rotates in the opposite direction, the first gear ring 8 will drive multiple first gears 9 to rotate rapidly, so that multiple stirring rods 5 can rotate rapidly. When multiple stirring rods 5 rotate rapidly, multiple stirring rods 5 will further quickly stir the concrete raw materials and water in the inner cavity of the mixing barrel 1 during the rotation process, ensuring that the concrete raw materials and water in the mixing barrel 1 can be quickly stirred to a usable state.

[0056] Example 3:

[0057] This embodiment provides a concrete mixing device for construction engineering. In addition to the technical solutions of the above embodiments, it also has the following technical features. The tension component includes:

[0058] Multiple chutes 16 are provided, and the multiple chutes 16 are opened in the fixed rod 10 and are connected to the inner cavity of the mixing barrel 1. Multiple sliders 17 are slidably connected in the multiple chutes 16, and one end of the multiple sliders 17 is fixed to the scraper 11. Multiple tension springs 18 are respectively provided on the peripheral sides of the multiple sliders 17, one end of the tension spring 18 is fixed to the inner wall of the chute 16, and the other end of the tension spring 18 is fixed to the slider 17.

[0059] Among them, when the first gear ring 8 rotates in the opposite direction, the first gear ring 8 will drive the multiple fixed rods 10 to rotate in the inner cavity of the mixing barrel 1, so that the multiple fixed rods 10 respectively drive the multiple scrapers 11 to scrape off the concrete stuck on the inner wall of the mixing barrel 1. At the same time, one end of the multiple sliders 17 will be respectively subjected to the tension of the multiple tension springs 18, and move along the multiple slide grooves 16 into the inner cavity of the mixing barrel 1, ensuring that the multiple sliders 17 can respectively drive the multiple scrapers 11 to always resist the inner wall of the mixing barrel 1.

[0060] Example 4:

[0061] This embodiment provides a concrete mixing device for construction engineering. In addition to the technical solutions of the above embodiments, it also has the following technical features: the output shaft of the motor 2 is rotatably connected to the mixing barrel 1.

[0062] Here, it is ensured that the output shaft of the motor 2 can rotate normally in the mixing barrel 1 .

[0063] Example 5:

[0064] This embodiment provides a concrete mixing device for construction engineering. In addition to the technical solutions of the above embodiments, it also has the following technical features: the first gear ring 8 is located in the first rotating groove 6 and is rotatably connected to the first rotating groove 6.

[0065] Herein, it is ensured that the first gear ring 8 can rotate normally in the first rotation groove 6 .

[0066] Example 6:

[0067] This embodiment provides a concrete mixing device for construction engineering. In addition to the technical solutions of the above embodiments, it also has the following technical features: the bottom ends of the multiple first gears 9 are rotatably connected to the fixed bracket 4.

[0068] Here, it is ensured that the bottom ends of the plurality of first gears 9 can rotate normally in the fixing bracket 4 .

[0069] Example 7:

[0070] This embodiment provides a concrete mixing device for construction projects. In addition to the technical solutions of the above embodiments, it also has the following technical features: a feed pipe and a discharge pipe are respectively provided on the feed port and the discharge port of the mixing barrel 1, and a valve is provided on the discharge pipe of the mixing barrel 1.

[0071] Among them, it is ensured that the user can inject concrete raw materials and water into the mixing barrel 1 through the feeding pipe on the mixing barrel 1, and that after the concrete raw materials and water in the mixing barrel 1 are mixed, the user can open the valve set on the discharge pipe of the mixing barrel 1 to discharge the mixing barrel 1 to the outside.

[0072] During use, the user injects concrete raw materials and water into the dynamic mixing barrel 1 through the feed pipe on the mixing barrel 1, and then the user starts the motor 2, allowing the output shaft of the motor 2 to drive the spiral blade stirring rod 3 to rotate in the inner cavity of the mixing barrel 1, so that the spiral blade stirring rod 3 performs preliminary stirring on the concrete raw materials and water in the mixing barrel 1. When the spiral blade stirring rod 3 rotates, the spiral blade stirring rod 3 will drive multiple stirring rods 5 to rotate in the inner cavity of the mixing barrel 1 through the fixed bracket 4. When the fixed bracket 4 rotates, the fixed bracket 4 will drive multiple first gears 9 to rotate in the inner cavity of the first gear ring 8, so that the multiple first gears 9 are meshed with the first gear ring 8 and drive the multiple stirring rods 5 to rotate respectively. Among them, when the output shaft of the motor 2 rotates, the output shaft of the motor 2 will also drive the second gear 13 to rotate in the second rotating groove 12, so that the second gear 13 drives the second gear ring 14 to rotate in the second rotating groove 12 in the opposite direction through the third gear 15. When the second gear ring 14 rotates in the opposite direction, the second gear ring 14 will drive the rotating The block 7 rotates in the first rotating groove 6 in the opposite direction, so that the rotating block 7 drives the first gear ring 8 to rotate in the opposite direction in the first rotating groove 6. When the first gear ring 8 rotates in the opposite direction, the first gear ring 8 drives the multiple first gears 9 to rotate rapidly, so that the multiple stirring rods 5 can rotate rapidly. When the multiple stirring rods 5 rotate rapidly, the multiple stirring rods 5 will further quickly stir the concrete raw materials and water in the inner cavity of the mixing barrel 1 during the rotation process, ensuring that the concrete raw materials and water in the mixing barrel 1 can be quickly stirred to a usable state. Among them, when the first gear ring 8 rotates in the opposite direction, the first gear ring 8 will drive the multiple fixed rods 10 to rotate in the inner cavity of the mixing barrel 1, so that the multiple fixed rods 10 respectively drive the multiple scrapers 11 to scrape off the concrete stuck on the inner wall of the mixing barrel 1. At the same time, one end of the multiple sliders 17 will be respectively subjected to the tension of the multiple tension springs 18, and move along the multiple slide grooves 16 into the inner cavity of the mixing barrel 1, ensuring that the multiple sliders 17 can respectively drive the multiple scrapers 11 to always be against the inner wall of the mixing barrel 1.

[0073] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A concrete mixing device for construction engineering, characterized in that: include: A stirring barrel (1) and a motor (2), wherein the motor (2) is fixedly connected to the top surface of the stirring barrel (1), and the output shaft of the motor (2) passes through the top surface of the stirring barrel (1) and extends into the stirring barrel (1), and a spiral blade stirring rod (3) is fixedly connected to the output shaft of the motor (2), and the spiral blade stirring rod (3) is located in the inner cavity of the stirring barrel (1) and is rotatably connected to the inner cavity of the stirring barrel (1); A fixed bracket (4), the fixed bracket (4) is fixedly connected to the top circumference of the spiral blade stirring rod (3), the bottom surface of the fixed bracket (4) is rotatably connected to a plurality of stirring rods (5), and the plurality of stirring rods (5) are located in the inner cavity of the stirring barrel (1); A first rotating groove (6), the first rotating groove (6) is opened on the top surface of the inner wall of the mixing barrel (1), a rotating block (7) is rotatably connected in the first rotating groove (6), a first gear ring (8) is fixedly connected to the bottom surface of the rotating block (7), a plurality of first gears (9) that rotate with the top surface of the fixed bracket (4) are engaged in the inner cavity of the first gear ring (8), and the bottom ends of the plurality of first gears (9) pass through the top surface of the fixed bracket (4) and extend into the fixed bracket (4) to be fixed to the top ends of the plurality of stirring rods (5) respectively; A transmission assembly, the transmission assembly being located in the mixing barrel (1) and being used to drive the rotating block (7) to rotate; A plurality of fixing rods (10), wherein the plurality of fixing rods (10) are fixedly connected to the bottom surface of the first gear ring (8), and a plurality of scrapers (11) are respectively provided on one side of the plurality of fixing rods (10); A plurality of pulling force components are respectively located in a plurality of fixing rods (10) and are respectively used to drive a plurality of scrapers (11) to move.

2. A concrete mixing device for construction engineering according to claim 1, characterized in that: The transmission assembly comprises: A second rotating groove (12), wherein the second rotating groove (12) is opened on the top surface of the inner wall of the first rotating groove (6), a second gear (13) fixed to the output shaft of the motor (2) is rotatably connected in the second rotating groove (12), a second gear ring (14) is rotatably connected in the second rotating groove (12), a third gear (15) is meshed between the second gear (13) and the second gear ring (14), and the third gear (15) is located in the second rotating groove (12) and is rotatably connected to the second rotating groove (12).

3. A concrete mixing device for construction engineering according to claim 1, characterized in that: The tension component includes: A plurality of chutes (16), wherein the chutes (16) are opened in the fixed rod (10) and communicated with the inner cavity of the mixing barrel (1), wherein the chutes (16) are respectively slidably connected with a plurality of sliders (17), and one end of the sliders (17) is fixed to the scraper (11), and a plurality of tension springs (18) are respectively provided on the peripheral sides of the sliders (17), one end of the tension spring (18) is fixed to the inner wall of the chute (16), and the other end of the tension spring (18) is fixed to the slider (17).

4. A concrete mixing device for construction engineering according to claim 1, characterized in that: The output shaft of the motor (2) is rotationally connected to the stirring barrel (1).

5. A concrete mixing device for construction engineering according to claim 1, characterized in that: The first gear ring (8) is located in the first rotation groove (6) and is rotationally connected to the first rotation groove (6).

6. A concrete mixing device for construction engineering according to claim 1, characterized in that: The bottom ends of the plurality of first gears (9) are rotatably connected to the fixed bracket (4).

7. A concrete mixing device for construction engineering according to claim 1, characterized in that: A feed pipe and a discharge pipe are respectively provided on the feed port and the discharge port of the mixing barrel (1), and a valve is provided on the discharge pipe of the mixing barrel (1).

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