Cement mixer for building construction

Abstract

The invention belongs to the field of building engineering, and particularly relates to a building construction cement mixer which comprises a main body, a mixing assembly, a conveying device and an adjusting device. The stirring assembly is arranged on one side of the main body and comprises a stirring bin, a torque motor group is fixedly mounted on one side of the stirring bin, a stirring rod is fixedly mounted at the output end of each motor of the torque motor group, and spiral flow guide ribs are arranged on the inner wall of the stirring bin and used for guiding materials to form turbulent motion from top to bottom; the torque motor group is provided with 3-5 torque motors which are distributed on the side face of the stirring bin in a circumferential array mode, the included angle between output shafts of the adjacent motors is 45-60 degrees, the stirring rods are driven to rotate at the rotating speed of 120-180 r / min, and a three-dimensional crossed stirring track is formed; the stirring rods are driven by the torque motor group to rotate synchronously, so that a multidirectional stirring force field is formed, the adhesive force among material particles can be broken quickly, raw materials such as cement, gravels and water are uniformly mixed, and the stirring efficiency and quality are improved.

Description

Technical Field

[0001] The invention relates to the field of construction engineering, in particular to a cement mixer for construction. Background Art

[0002] Cement mixers are suitable for concrete preparation operations in various construction projects, especially for scenarios such as high-rise buildings, bridge construction, and underground projects that have high requirements for concrete quality and construction efficiency.

[0003] Chinese patent number CN202411307077.3 discloses a material mixer for building construction projects, including a mounting base, a mixer body connected to the mounting base, and a feed frame connected to the mixer body. The feed frame is provided with a water quality adjustment component, and the water quality adjustment component includes a water tank connected to the feed frame, and the water tank is connected to a plurality of acid and alkali solution storage tanks. A potential-current converter is connected to one side of the mounting base, and a pH meter is connected to the mounting base. The water tank is also provided with an equal amount adjustment component that is adjusted synchronously with the pH meter.

[0004] From the above, we can see that to ensure that the water mixed with cement does not show strong acidity or alkalinity, this setting is convenient for automatically adjusting the pH value in the water with high accuracy. However, this solution has the following shortcomings: First, the mixing uniformity is insufficient: Traditional mixers mostly use a single-axis or dual-axis mixing structure, and the material can only form a single-direction flow trajectory in the mixing chamber, resulting in a limited contact area between cement and sand and gravel. Especially for large-particle aggregates or high-viscosity concrete, local agglomeration and uneven mixing are prone to occur, which directly affects the strength and durability of the concrete.

[0005] Second, poor transportation stability: When materials are transported from the mixing bin to the pouring location, they often fall freely or are transported poorly in the pipeline due to height differences or horizontal distances. Especially in vertical transportation scenarios, materials are easily accumulated at the bottom of the pipeline due to gravity, causing blockages and requiring frequent shutdowns for cleaning, which seriously affects construction efficiency.

[0006] Third, angle adjustment is limited: the delivery outlet angle of traditional equipment is fixed. When faced with complex construction environments, such as slope casting and layered construction of multi-story buildings, it is necessary to adjust the position through cranes or manual equipment. The operation is cumbersome and there are safety hazards. It is difficult to meet the needs of modern building industrialization for efficient construction.

[0007] Therefore, a construction cement mixer is proposed to address the above problems. Summary of the Invention

[0008] In order to make up for the deficiencies of the prior art and address the problems of uneven mixing, easy transportation blockage, and inconvenient angle adjustment in existing construction cement mixing equipment, the present invention proposes a construction cement mixer.

[0009] The technical solution adopted by the present invention to solve its technical problems is: a construction cement mixer of the present invention includes a main body, a stirring assembly, a conveying device and an adjusting device; the stirring assembly is arranged on one side of the main body, the stirring assembly includes a stirring bin, a torque motor group is fixedly installed on one side of the stirring bin, and a stirring rod is fixedly installed on the output end of each motor of the torque motor group, and a spiral guide ridge is provided on the inner wall of the stirring bin to guide the material to form a turbulent flow motion from top to bottom. The torque motor group is equipped with 3-5 torque motors, which are distributed in a circular array on the side of the stirring bin, and the angle between adjacent motor output shafts is 45°-60°, driving the stirring rod to rotate at a speed of 120-180r / min to form a three-dimensional cross stirring trajectory. A bin cover is fixedly installed on the top of the stirring bin, and a transfer bin is fixedly installed on the bottom of the mixing bin. A drop bucket is opened on the top of the transfer bin, and a telescopic hose is fixedly installed on the bottom of the transfer bin.

[0010] Preferably, the conveying device includes a fixed seat, a stepper motor is fixedly mounted on one side of the top of the fixed seat, a spiral auger blade is fixedly mounted on the output end of the stepper motor, the spiral auger blade is movably mounted in the inner cavity of the conveying channel, a fixed plate is fixedly mounted on one side of the conveying channel, and the fixed plate is fixedly mounted on one side of the fixed seat.

[0011] Preferably, the adjustment device includes a base, and four support wheels are fixedly installed on the top of the base. The four support wheels are respectively slidably installed on the bottom of two curved slides. The tops of the two curved slides are both slidably installed with limiting wheels, and the two curved slides are fixedly installed on one side of the movable frame.

[0012] Preferably, the main body includes a support base, a conveyor belt is fixedly installed on the top of the support base, a plurality of conveyor buckets are fixedly installed on the outer periphery of the conveyor belt, and an introduction bucket is fixedly installed on the top of the support base.

[0013] Preferably, the stirring assembly further comprises two cylinders fixedly mounted on the bottom of the stirring bin, and piston rods are movably mounted on the output ends of the two cylinders.

[0014] Preferably, one end of the two piston rods is respectively fixedly mounted with a limit plate, and the mixing bin is provided with a slide groove, and is slidably mounted with the limit plate through the slide groove.

[0015] Preferably, a groove is provided on one side of the conveying channel, and a connecting plate is fixedly installed through the groove, a telescopic hose is fixedly installed on one side of the connecting plate, and a delivery port is fixedly installed on the other side of the conveying channel.

[0016] Preferably, a support frame is fixedly installed on the bottom of the transfer bin, and the drop bucket is arranged directly below the limit plate.

[0017] Preferably, the adjusting device also includes a servo motor, the bottom of the servo motor is fixedly mounted on the top of the base, the output end of the servo motor is fixedly mounted with a transmission gear, the top of the transmission gear is meshed and connected with an arc-shaped rack, and both ends of the arc-shaped rack are fixedly mounted on the movable frame.

[0018] Preferably, the bottom of the arc-shaped rack is meshedly connected with two limiting gears, the bottoms of the two limiting gears are movably mounted on the top of the base, and a fixing seat is fixedly mounted on the top of the movable frame.

[0019] The present invention is beneficial in that: 1. The present invention adopts the structural design of the stirring assembly, and uses the torque motor group to drive the stirring rod to rotate synchronously, forming a multi-directional stirring force field, which can quickly break the adhesion between material particles, ensure the uniform mixing of cement, sand, gravel, water and other raw materials, and improve the stirring efficiency and quality; 2. The present invention uses the structural design of the conveying device, where the spiral auger blades cooperate with the conveying channel to achieve continuous spiral conveying of materials. The telescopic hose can flexibly adapt to the height difference between the mixing chamber and the conveying channel, avoiding material accumulation and blockage caused by excessive height difference, thereby improving conveying stability. 3. The present invention adopts the structural design of the adjustment device. The servo motor drives the transmission gear to engage with the arc rack, driving the movable frame to slide along the arc slide, so as to realize the angle adjustment of the conveying device within the range of ±45°, meet the material delivery requirements of different construction locations, and reduce the frequency of equipment movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 This is an exploded schematic diagram of the stirring assembly structure of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the structure at center A; Figure 5 It is a schematic diagram of the exploded structure of the conveying device of the present invention; Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at point B in the middle; Figure 7 This is an exploded schematic diagram of the regulating device structure of the present invention; Figure 8 It is a schematic diagram of the main structure of the present invention.

[0022] In the figure: 1. Main body; 2. Stirring assembly; 3. Conveying device; 4. Adjusting device; 11. Support seat; 12. Conveyor belt; 13. Inlet bucket; 14. Conveying bucket; 21. Stirring bin; 22. Torque motor group; 23. Stirring rod; 24. Bin cover; 25. Transfer bin; 26. Drop bucket; 27. Telescopic hose; 28. Cylinder; 29. ​​Piston rod; 201. Limiting plate; 202. Support frame; 31. Fixed seat; 32. Stepping motor; 33. Auger blade; 34. Conveying channel; 35. Fixed plate; 36. Connecting plate; 37. Delivery port; 41. Base; 42. Support wheel; 43. Limiting wheel; 44. Arc slide; 45. Movable frame; 46. Arc rack; 47. Transmission gear; 48. Servo motor; 49. Limiting gear. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention. See also Figures 1-8As shown, a construction cement mixer comprises a main body 1, a mixing assembly 2, a conveying device 3 and an adjusting device 4; the mixing assembly 2 is arranged on one side of the main body 1, and the mixing assembly 2 comprises a mixing chamber 21, a torque motor group 22 is fixedly installed on one side of the mixing chamber 21, and a stirring rod 23 is fixedly installed at the output end of each motor of the torque motor group 22, and a spiral guide ridge is provided on the inner wall of the mixing chamber 21 to guide the material to form a turbulent flow from top to bottom. The torque motor group 22 is equipped with 3-5 torque motors, which are distributed in a circular array on the side of the mixing chamber, and the angle between the output shafts of adjacent motors is 45°-60°, driving the stirring rod 23 to rotate at a speed of 120-180r / min to form a three-dimensional cross stirring trajectory. A chamber cover 24 is fixedly installed on the top of the mixing chamber 21, and a transfer chamber 25 is fixedly installed on the bottom of the mixing chamber 21. A drop bucket 26 is opened on the top of the transfer chamber 25, and a telescopic hose 27 is fixedly installed on the bottom of the transfer chamber 25; During operation, materials are poured into the inlet hopper 13 of the main body 1 manually or by a loader. The inlet hopper 13 is designed in a trumpet shape, and its bottom is aligned with the conveyor hopper 14 of the conveyor belt 12. The conveyor belt 12 is driven by the drive motor inside the support base 11. After the conveyor hopper 14 rises to the top of the mixing chamber 21 along with the conveyor belt 12, the materials fall into the mixing chamber 21 through the opening of the chamber cover 24. The chamber cover 24 is connected to the top of the mixing chamber 21 by a hinge and can be opened and closed manually or electrically to prevent material splashing during the mixing process. The torque motor group 22 adopts multi-motor coordinated control technology. Each torque motor can be independently speed-controlled, and synchronous start and stop and speed matching are achieved through control. After the motor is started, the stirring rod 23 rotates at high speed at different angles to form the following stirring effect: Radial shearing: The blades at the end of the stirring rod 23 generate a transverse shearing force on the material, breaking up the lumps of cement and sand; Axial tumbling: The spiral guide ridges on the inner wall of the inverted conical mixing chamber 21 guide the material to flow in a spiral from top to bottom, while the cone angle at the bottom forces the material to converge towards the center, forming a circular tumbling; Three-dimensional cross trajectory: The rotation trajectories of the multiple stirring rods 23 cross and overlap in space, ensuring that there is no dead angle for stirring the material in the stirring chamber 21 and improving the mixing uniformity.

[0024] Furthermore, the conveying device 3 includes a fixed base 31, a stepper motor 32 is fixedly mounted on one side of the top of the fixed base 31, a spiral auger blade 33 is fixedly mounted on the output end of the stepper motor 32, the spiral auger blade 33 is movably mounted in the inner cavity of the conveying channel 34, a fixing plate 35 is fixedly mounted on one side of the conveying channel 34, and the fixing plate 35 is fixedly mounted on one side of the fixed base 31; During operation, the stepper motor 32 drives the spiral auger blade 33 to rotate clockwise in the conveying channel 34. The material is sucked into the conveying channel 34 through the inlet on the connecting plate 36, and is transported along the channel to the delivery port 37, and finally delivered to the designated construction location. The telescopic hose 27 automatically expands and contracts according to the height difference between the mixing bin 21 and the conveying channel 34 to ensure smooth flow of materials.

[0025] Furthermore, the adjustment device 4 includes a base 41, and four support wheels 42 are fixedly mounted on the top of the base 41. The four support wheels 42 are slidably mounted on the bottoms of two curved slides 44, and the tops of the two curved slides 44 are both slidably mounted with limit wheels 43. The two curved slides 44 are fixedly mounted on one side of the movable frame 45. During operation, when the delivery angle of the conveying device 3 needs to be adjusted, the servo motor 48 is started, driving the transmission gear 47 to rotate counterclockwise, engaging with the arc-shaped rack 46, and driving the movable frame 45 to slide upward along the arc-shaped slide 44. The support wheel 42 rolls at the bottom of the arc-shaped slide 44, and the limiting wheel 43 is limited at the top to ensure that the movable frame 45 tilts smoothly. At the same time, the limiting gear 49 engages with the arc-shaped rack 46 to prevent deviation during the sliding process, and finally the conveying device 3 reaches the required delivery angle to meet the needs of different construction locations.

[0026] Furthermore, the main body 1 includes a support base 11, a conveyor belt 12 is fixedly installed on the top of the support base 11, a plurality of conveyor buckets 14 are fixedly installed on the outer periphery of the conveyor belt 12, and an introduction bucket 13 is fixedly installed on the top of the support base 11; During operation, the introduction bucket 13 is used to receive materials, and the conveyor belt 12 conveys the materials from the introduction bucket 13 to the mixing bin 21 through the conveying bucket 14, thereby realizing the initial transmission of the materials.

[0027] Furthermore, the stirring assembly 2 further includes two cylinders 28 fixedly mounted at the bottom of the stirring chamber 21, and piston rods 29 are movably mounted at the output ends of the two cylinders 28; During operation, the cylinder 28 is controlled to extend and retract through the solenoid valve. When unloading, the piston rod 29 contracts, driving the limit plate 201 to slide to both sides and open the discharge port; when stirring, the piston rod 29 extends and the limit plate 201 closes the discharge port to ensure that the material does not leak during the stirring process.

[0028] Further, one end of the two piston rods 29 are fixedly mounted to the limit plate 201, the mixing chamber 21 is provided with a chute, and the chute and the limit plate 201 are slidably mounted; During operation, a wear-resistant rubber sealing strip is provided on the surface of the limit plate 201, which cooperates with the slide groove to achieve sealing to prevent leakage of unmixed materials. The materials fall into the drop bucket 26 through the discharge port, and are then buffered by the transfer bin 25 before being transported to the conveying device 3 by the telescopic hose 27.

[0029] Furthermore, a groove is formed on one side of the conveying channel 34, and a connecting plate 36 is fixedly installed through the groove. A telescopic hose 27 is fixedly installed on one side of the connecting plate 36, and a delivery port 37 is fixedly installed on the other side of the conveying channel 34; During operation, the stepper motor 32 drives the spiral auger blades 33 to rotate in the conveying channel 34, sucking the mixed material from the inlet on the side of the connecting plate 36 and delivering it to the designated position through the delivery port 37. The telescopic hose 27 can be flexibly extended and retracted according to the relative height of the mixing bin 21 and the conveying channel 34 to ensure smooth flow of materials.

[0030] Furthermore, a support frame 202 is fixedly installed at the bottom of the transfer bin 25, and a drop bucket 26 is arranged directly below the limit plate 201; During operation, the support frame 202 is used to support the transfer bin 25 to ensure its stability. After the limit plate 201 opens the bottom outlet of the mixing bin 21, the material falls into the transfer bin 25 through the drop bucket 26 to prepare for subsequent transportation.

[0031] Furthermore, the adjustment device 4 further includes a servo motor 48, the bottom of the servo motor 48 is fixedly mounted on the top of the base 41, the output end of the servo motor 48 is fixedly mounted with a transmission gear 47, the top of the transmission gear 47 is meshedly connected with an arc-shaped rack 46, and both ends of the arc-shaped rack 46 are fixedly mounted on the movable frame 45; During operation, the servo motor 48 starts, driving the transmission gear 47 to rotate, meshing with the arc-shaped rack 46, driving the movable frame 45 to slide along the arc-shaped slide 44, and the supporting wheel 42 and the limiting wheel 43 slide at the bottom and top of the arc-shaped slide 44 respectively, providing support and limiting effects, so that the conveying device 3 is tilted at a predetermined angle.

[0032] Furthermore, the bottom of the arc-shaped rack 46 is meshedly connected with two limit gears 49 , and the bottoms of the two limit gears 49 are movably mounted on the top of the base 41 , and the top of the movable frame 45 is fixedly mounted with a fixed seat 31 ; During operation, the limiting gear 49 limits the lateral displacement of the arc-shaped rack 46, ensuring that the movable frame 45 only slides along the arc direction of the arc-shaped slide plate 44, thereby improving the stability and reliability of the adjustment process.

[0033] Working principle: In step one, the material falls into the conveying bucket 14 of the conveyor belt 12 through the inlet bucket 13 of the main body 1. The conveyor belt 12 operates to lift the material and convey it to the top of the mixing bin 21, and enters the mixing bin 21 through the bin cover 24. The torque motor group 22 on the side of the mixing bin 21 synchronously drives the stirring rod 23 to rotate at high speed, forming a multi-directional stirring force field, quickly breaking the adhesion between the particles of cement, sand, gravel, water and other materials to achieve uniform mixing. After the stirring is completed, the cylinder 28 pushes the piston rod 29, driving the limit plate 201 to slide along the bottom chute of the mixing bin 21, opening the discharge outlet, and the material falls into the transfer bin 25 through the drop bucket 26, and enters the conveying device 3 through the telescopic hose 27 at the bottom of the transfer bin 25.

[0034] In step 2, the stepper motor 32 of the conveying device 3 drives the spiral auger blade 33 to rotate in the conveying channel 34, and uses the thrust of the spiral blade to suck the material falling from the transfer bin 25 from the inlet on the side of the connecting plate 36, and push it along the conveying channel 34 to the delivery port 37 to achieve continuous conveying. The telescopic hose 27 connects the transfer bin 25 and the conveying channel 34, and can flexibly adapt to the height difference between the mixing bin 21 and the conveying device 3 to avoid material accumulation and blockage due to excessive height difference, thereby ensuring smooth conveying.

[0035] Step three, after the servo motor 48 of the adjustment device 4 is started, the transmission gear 47 at the output end engages with the arc rack 46, driving the movable frame 45 to slide along the arc slide 44. Both ends of the arc rack 46 are fixed to the movable frame 45, and the bottom engages with the limit gear 49 to ensure smooth movement. The movable frame 45 is guided by the support wheel 42 at the bottom of the arc slide 44 and the limit wheel 43 at the top, and the inclination angle of the conveying device 3 can be adjusted within the range of ±45°. After the adjustment is completed, the limit gear 49 and the support wheel 42 limit the displacement of the movable frame 45 to ensure that the conveying angle is stable, meet the material delivery requirements of different construction positions, and reduce the frequency of equipment movement.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, and these changes and improvements shall fall within the scope of the invention claimed for protection.

Claims

1. A cement mixer for construction, characterized by: The invention comprises a main body (1), a stirring assembly (2), a conveying device (3) and an adjusting device (4); the stirring assembly (2) is arranged on one side of the main body (1), the stirring assembly (2) comprises a stirring chamber (21), a torque motor group (22) is fixedly installed on one side of the stirring chamber (21), the output end of each motor of the torque motor group (22) is fixedly installed with a stirring rod (23), the inner wall of the stirring chamber (21) is provided with a spiral guide ridge to guide the material to form a turbulent flow from top to bottom, the torque motor group (22) is equipped with 3-5 torque motors, which are distributed in a circular array on the side of the stirring chamber, the angle between the output shafts of adjacent motors is 45°-60°, and the stirring rod (23) is driven at 120-180r / min The mixing chamber (21) is rotated at a speed, a chamber cover (24) is fixedly mounted on the top of the mixing chamber (21), a transfer chamber (25) is fixedly mounted on the bottom of the mixing chamber (21), a drop bucket (26) is opened on the top of the transfer chamber (25), and a telescopic hose (27) is fixedly mounted on the bottom of the transfer chamber (25).

2. A construction cement mixer according to claim 1, characterized in that: The conveying device (3) comprises a fixed seat (31), a stepper motor (32) is fixedly mounted on one side of the top of the fixed seat (31), a spiral auger blade (33) is fixedly mounted on the output end of the stepper motor (32), the spiral auger blade (33) is movably mounted in the inner cavity of the conveying channel (34), a fixed plate (35) is fixedly mounted on one side of the conveying channel (34), and the fixed plate (35) is fixedly mounted on one side of the fixed seat (31).

3. A construction cement mixer according to claim 1, characterized in that: The adjusting device (4) comprises a base (41), four supporting wheels (42) are fixedly mounted on the top of the base (41), the four supporting wheels (42) are respectively slidably mounted on the bottoms of two arc-shaped slides (44), the tops of the two arc-shaped slides (44) are both slidably mounted with limiting wheels (43), and the two arc-shaped slides (44) are fixedly mounted on one side of the movable frame (45).

4. A construction cement mixer according to claim 1, characterized in that: The main body (1) comprises a support base (11), a conveyor belt (12) is fixedly mounted on the top of the support base (11), a plurality of conveyor buckets (14) are fixedly mounted on the outer periphery of the conveyor belt (12), and an introduction bucket (13) is fixedly mounted on the top of the support base (11).

5. A construction cement mixer according to claim 1, characterized in that: The stirring assembly (2) further comprises two cylinders (28) fixedly mounted on the bottom of the stirring bin (21), and piston rods (29) are movably mounted on the output ends of the two cylinders (28).

6. A construction cement mixer according to claim 5, characterized in that: One end of the two piston rods (29) is fixedly mounted with a limit plate (201), and the mixing chamber (21) is provided with a slide groove and is slidably mounted with the limit plate (201) through the slide groove.

7. A construction cement mixer according to claim 2, characterized in that: A groove is formed on one side of the conveying channel (34), and a connecting plate (36) is fixedly mounted through the groove. A telescopic hose (27) is fixedly mounted on one side of the connecting plate (36), and a delivery port (37) is fixedly mounted on the other side of the conveying channel (34).

8. A construction cement mixer according to claim 1, characterized in that: A support frame (202) is fixedly installed at the bottom of the transfer bin (25), and the drop bucket (26) is arranged directly below the limiting plate (201).

9. A construction cement mixer according to claim 3, characterized in that: The regulating device (4) further comprises a servo motor (48), the bottom of the servo motor (48) being fixedly mounted on the top of the base (41), the output end of the servo motor (48) being fixedly mounted with a transmission gear (47), the top of the transmission gear (47) being meshedly connected with an arc-shaped rack (46), and both ends of the arc-shaped rack (46) being fixedly mounted on the movable frame (45).

10. A construction cement mixer according to claim 9, characterized in that: The bottom of the arc-shaped rack (46) is meshedly connected with two limiting gears (49), the bottoms of the two limiting gears (49) are movably mounted on the top of the base (41), and the top of the movable frame (45) is fixedly mounted with a fixed seat (31).

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