Concrete mixer for construction of cantilever concrete member
By using solid concrete batch fabrics of primary and secondary cloth hoppers in a concrete mixer, the contact between foam and concrete particles is reduced, the foam burst rate is reduced, and the dispersion uniformity of foam concrete is improved. The problem of high foam burst rate in traditional mixing equipment is solved and the mixing quality is improved.
Patent Information
- Application Number
- CN202411749866.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-02-25
AI Technical Summary
During the stirring process of traditional concrete mixing equipment, the foam liquid film is prone to breakage, resulting in an increase in the actual moisture content of foam concrete and a decrease in the foam content, affecting the mixing quality.
A concrete mixer for construction of cantilever concrete components is adopted. Through the solid concrete common fabric of the primary cloth hopper and the secondary cloth hopper, the foam group is first filled into the concrete slurry with a solid particle content lower than the required stirring, and then filled in the solid particles to reduce the contact area between the foam and the concrete particles and reduce the foam burst rate.
By fabricating solid concrete in batches, the breakage of foam groups is reduced, the dispersion uniformity of foam concrete is improved, the component content of molded concrete is stable, and the mixing quality is improved.
Smart Images
Figure CN119502135A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of concrete mixing equipment, and in particular relates to a concrete mixer for construction of cantilever concrete components. Background Art
[0002] During the construction of cantilever concrete components, it is necessary to use a concrete mixer to add prefabricated foam groups to the concrete raw materials for mixing and mixing to prepare foamed concrete, and then apply the prepared foamed concrete to part of the structure of the cantilever concrete components. Existing concrete mixing equipment includes a mixing barrel, which is driven by a driving motor to drive the mixing blades in the mixing barrel to rotate coaxially, stir the filled concrete raw materials, and then add the foam groups to mix again, so that the foam groups are fully dispersed in the concrete to complete the mixing.
[0003] However, during the use of traditional concrete mixing equipment, the foam liquid film will be damaged as the mixing progresses due to the squeezing of the particles in the concrete raw materials. As the water content in the required concrete raw materials decreases, the proportion of particles in the unit volume of concrete slurry increases, which increases the contact area between the foam and the slurry particles, making the foam more vulnerable to damage. The foam walls of a large number of damaged foams will be converted into excess free water and retained in the concrete, resulting in an increase in the actual water content of the foamed concrete and a decrease in the foam content, affecting the quality of foamed concrete mixing. Summary of the invention
[0004] The present application proposes a concrete mixer for the construction of cantilever concrete components, which has the advantages of reducing the breakage rate of foam groups and improving the mixing quality of foam concrete, and is used to solve the problem that the foam groups are easily worn during the mixing and preparation of foam concrete, resulting in the content of the formed concrete deviating from the actual needs.
[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a concrete mixer for cantilever concrete member construction, comprising a bracket, a mixing drum is arranged on the bracket, a primary distribution hopper is arranged on one side of the top of the bracket, all liquid concrete raw materials, foam group and solid concrete raw materials less than the required amount are filled into the mixing drum through the primary distribution hopper, a secondary distribution hopper is arranged on one side of the top of the bracket, the remaining required amount of solid concrete raw materials is supplemented into the mixing drum through the secondary distribution hopper, and the total distribution amount of solid concrete through the primary distribution hopper and the secondary distribution hopper is the required amount of solid material in the foam concrete.
[0006] Solid concrete raw materials are supplemented by the secondary distribution hopper after the foam group has been distributed by the primary distribution hopper. The foam group is distributed in sequence by the primary distribution hopper and the secondary distribution hopper, so that the foam group can be first filled into the concrete slurry with a solid particle content lower than the required content and stirred, and then stirred in the concrete slurry with a solid particle content reaching the rated amount. A distribution mechanism is provided at the bottom of the secondary distribution hopper, and the distribution mechanism is used to assist in filling the material in the secondary distribution hopper into the mixing drum in uniform amounts in multiple times. Beneficial Effects
[0007] The present application provides a concrete mixer for cantilever concrete member construction. By distributing solid concrete raw materials in batches, the foam group is filled into the mixing drum in a state where there are relatively few particles in the concrete slurry. When the foam group is dispersed into the concrete slurry, the foam is reduced from being squeezed and damaged by solid particles. The water content is relatively high, which reduces the viscosity of the concrete slurry, makes the foam easier to move in the slurry and easier to be stirred and dispersed, thereby improving the uniformity of foam dispersion. Subsequently, the required amount of solid concrete raw materials is supplemented and filled in. During the process of supplementing the filler, the rated amount is filled in multiple times, thereby avoiding the aggregation of the solid materials filled in subsequently, increasing the amount of particles contacted by the foam in this part of the area and causing additional foam wear, thereby achieving the effect of improving the uniformity of foam dispersion while ensuring the stability of the content of the prepared foam concrete components. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at center A; Figure 4 It is a schematic cross-sectional diagram of the overall structure in the third embodiment of the present invention; Figure 5 For the present invention Figure 4 A magnified view of the structure at B in the middle; Figure 6 It is a schematic diagram of the distribution blade arrangement structure of the present invention.
[0009] In the figure: 1-primary feeding hopper, 2-secondary feeding hopper, 3-No. 1 feeding pipe, 4-No. 2 feeding pipe, 5-mixing drum, 6-connecting pipe, 7-driving mechanism, 701-driving motor, 702-driving gear, 8-drum cover, 9-passive gear, 10-transmission gear, 11-external gear ring, 12-mixing blade, 13-support ring, 14-support rod, 15-transmission shaft, 16-feeding blade, 17-bracket, 18-support seat, 19-No. 3 feeding pipe, 20-fixing ring, 21-material guide port. DETAILED DESCRIPTION
[0010] The following will be combined with the 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 described embodiments 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 creative work are within the scope of protection of the present invention.
[0011] Embodiment 1, as Figure 1-Figure 3 and Figure 6 A concrete mixer for cantilever concrete member construction includes a bracket 17, a mixing drum 5 is arranged on the bracket 17, mixed foam concrete raw materials are mixed and stirred in the mixing drum 5, a primary distribution hopper 1 is arranged on one side of the top of the bracket 17, all liquid concrete raw materials, foam groups and part of solid concrete raw materials are filled into the mixing drum 5 through the primary distribution hopper 1, the liquid raw materials include water and liquid admixtures, and the solid concrete raw materials include cement, sand and gravel and solid admixtures, a secondary distribution hopper 2 is arranged on one side of the top of the bracket 17, and the remaining solid concrete raw materials are filled into the mixing drum 5 through the secondary distribution hopper 2, and the total distribution amount of solid concrete through the primary distribution hopper 1 and the secondary distribution hopper 2 is the amount of solid material required in the foam concrete.
[0012] When in use, first fill the liquid concrete raw materials and part of the solid materials less than the required amount into the mixing drum 5 through the primary distribution hopper 1 for stirring, and then fill the rated amount of foam group into the mixing drum 5 through the primary distribution hopper 1. Due to the relative reduction of solid materials, the contact area between the foam group and the solid particles in the concrete slurry is reduced during the mixing and stirring of the foam group and the concrete raw materials, thereby reducing the squeezing and breaking effect of concrete particles on the foam in the process of distributing the foam group to the concrete slurry, reducing the amount of foam damage, and the relative increase in water content reduces the viscosity of the concrete slurry, making it easier for the foam group to be dispersed in the concrete slurry, ensuring the dispersion degree of the foam group in the concrete slurry, completing the primary distribution and stirring, and then fill the remaining solid concrete raw materials into the mixing drum 5 through the second distribution hopper to complete the secondary distribution, mix and stir the filled materials, and complete the mixing and stirring of the foam concrete.
[0013] The bottom of the secondary material distribution hopper 2 is fixedly connected with a second material distribution pipe 4 for guiding materials. A transmission shaft 15 is rotatably sleeved on one side of the second material distribution pipe 4 through a bearing. A material distribution blade 16 for auxiliary material distribution is fixedly sleeved on one end of the transmission shaft 15. Figure 6 The number of cloth blades 16 is set to be several and the several cloth blades 16 are symmetrical about the axis of the transmission shaft 15 and are evenly arranged. The several cloth blades 16 form a cloth wheel. The rotation range of the cloth wheel is adapted to the size and shape of the inner wall of the No. 2 cloth pipe 4, so that the passage of the No. 2 cloth pipe 4 can be closed when the cloth wheel is fixed. A rotating mechanism for driving the transmission shaft 15 to rotate is provided on the top of the bracket 17.
[0014] During the secondary feeding process, the rotating mechanism drives the transmission shaft 15 to rotate at a rated speed, and the transmission shaft 15 drives the feeding blades 16 to rotate. When two adjacent feeding blades 16 rotate to the top of the transmission shaft 15, they feed the material, and when they rotate to the bottom, they drop the material, thereby dividing the secondary feeding into several times of feeding, reducing the amount of single feeding, thereby reducing the amount of solid material entering the mixing drum 5 at a single time, making it easier for the solid material to disperse in the mixing drum 5, reducing the possibility of foam contacting concrete slurry particles, and avoiding the agglomeration of solid materials during the secondary feeding process, resulting in the concentration of solid materials in some areas, increasing the area of foam in the area contacting concrete slurry particles, causing an increase in the amount of foam breakage in some areas, thereby further reducing the foam breakage rate and ensuring the quality of the stirred foam concrete.
[0015] When traditional concrete mixing equipment is used to mix foamed concrete, a large amount of foam floats to the top of the slurry under the action of the buoyancy of the slurry and comes into contact with the air, causing the moisture in the foam wall to be lost under the action of gravity, resulting in the foam wall becoming thinner and even broken. In addition, as a non-Newtonian fluid, the concrete slurry becomes shear-thinned and the viscosity decreases as the mixing proceeds, making the foam easier to stir and disperse, but also easier to float and break.
[0016] Embodiment 2, as Figure 1-Figure 3 On the basis of the first embodiment, a support seat 18 is fixedly connected to the bottom of the bracket 17, the number of the support seats 18 is set to two and the two support seats 18 are respectively arranged on both sides of the mixing drum 5, and the top of the support seat 18 is rotatably connected to a support ring 13, which is fixedly sleeved on the outside of the mixing drum 5. The support ring 13 cooperates with the support seat 18 to provide support and limit the mixing drum 5 without affecting the rotation of the mixing drum 5 around its own axis. An outer gear ring 11 is fixedly sleeved on the outside of the mixing drum 5, and a driving mechanism 7 for driving the outer gear ring 11 to rotate is provided on one side of the bottom of the bracket 17. The driving mechanism 7 includes a driving motor 701, and the output end of the driving motor 701 is connected to a driving gear 702 through a rotating shaft transmission.
[0017] The driving gear 702 is meshed with the outer gear ring 11. The bottom of the primary distribution hopper 1 is fixedly connected with a No. 1 distribution pipe 3 for guiding materials. The bottom of the No. 2 distribution pipe 4 is fixedly connected with a connecting pipe 6. The connecting pipe 6 connects the No. 2 distribution pipe 4 with the No. 1 distribution pipe 3. A discharge port is provided on one side of the mixing drum 5. A feed port is provided on the other side of the mixing drum 5. The bottom part of the No. 1 distribution pipe 3 extends into the feed port. A drum cover 8 for closing the discharge port is detachably provided on one side of the mixing drum 5. The drum cover 8 is located on the outside of the discharge port. The drum cover 8 closes the discharge port during the mixing process to prevent the material from leaking out. A number of stirring blades 12 are fixedly arranged on the inner side of the mixing drum 5. The stirring blades 12 are used to cooperate with the mixing drum 5 to mix the material and to discharge the material after the drum cover 8 is opened. The material filled into the primary distribution hopper 1 passes through the No. 1 distribution pipe 3 and then enters the mixing drum 5. The material filled into the secondary distribution hopper 2 passes through the No. 2 distribution pipe 4, the connecting pipe 6 and the No. 1 distribution pipe 3 and then enters the mixing drum 5 from the feed port.
[0018] During the entire mixing process, the driving motor 701 drives the active gear 702 to rotate, the active gear 702 drives the outer gear ring 11 to rotate, and the outer gear ring 11 drives the mixing drum 5 to rotate, so that the mixing drum 5 drives the material in the drum to turn over, so that the top and bottom layers of the material change alternately, and the layers of the foam group are constantly turned over, and the solid materials of the concrete are distributed twice to ensure the stability of the foam in the concrete slurry. While avoiding the foam layer from floating up as a whole and being damaged, the uniformity of foam dispersion is increased and the possibility of foam damage due to contact with concrete slurry particles is reduced, further reducing the amount of foam group damage and improving the reliability of the equipment.
[0019] The rotating mechanism includes a support rod 14, one end of the support rod 14 is fixedly connected to the connecting pipe 6, and the other end of the support rod 14 is rotatably sleeved with a transmission gear 10 through a bearing. A transmission shaft 15 is partially located on the outside of the No. 2 material distribution pipe 4, and one end of the transmission shaft 15 located on the outside of the No. 2 material distribution pipe 4 is sleeved with a passive gear 9, and the passive gear 9 and the transmission gear 10 are meshed with each other, and the transmission gear 10 and the outer gear ring 11 are meshed with each other. During the secondary material distribution, the mixing drum 5 keeps rotating, the outer gear ring 11 drives the transmission gear 10 to rotate, the transmission gear 10 drives the passive gear 9 to rotate, and the passive gear 9 drives the transmission shaft 15 to rotate, so that the speed at which the material distribution blades 16 rotate to distribute the material is adapted to the speed at which the mixing drum 5 rotates, further reducing the possibility of foam extrusion and breakage in some areas due to accumulation of solid concrete materials during the secondary material distribution process. The rotating mechanism can also be set as a stepping motor connected to the transmission shaft 15 for transmission.
[0020] Embodiment three, as Figure 4 and Figure 5, which is different from the No. 1 distribution pipe 3, the connecting pipe 6 and the feeding port on one side of the mixing drum 5 in the second embodiment, the support rod 14 is fixedly connected to the No. 2 distribution pipe 4, and the bottom of the primary distribution hopper 1 is fixedly connected with the No. 3 distribution pipe 19, one end of the No. 3 distribution pipe 19 is fixedly connected to the No. 2 distribution pipe 4, and the No. 3 distribution pipe 19 communicates with the primary distribution hopper 1 and the No. 2 distribution pipe 4. The bottom end of the No. 2 distribution pipe 4 is fixedly connected with a fixing ring 20, and the mixing drum 5 body is rotatably connected with the fixing ring 20, and the fixing ring 20 is fixed relative to the bracket 17. A material guide port 21 corresponding to the channel position of the No. 2 distribution pipe 4 is opened at the top of the fixing ring 20, and the material guide port 21 is arranged at the top, so that more materials can be relatively filled into the mixing drum 5 at a time, so that in the process of turning driven by the rotation of the mixing drum 5, the concrete slurry is more easily driven to the top, ensuring the turning effect of the concrete slurry, and further ensuring the stability of the foam in the concrete slurry.
[0021] In the process of secondary distribution, as the mixing drum 5 turns the material, the material passes through the second distribution pipe 4 and the material guide port 21 and falls into the mixing drum 5, the contacting material changes, rather than being located in the same area on the side of the material layer. While reducing the single distribution amount during secondary distribution, the contact surface between each distribution and the concrete slurry changes, further reducing the possibility that solid concrete materials are piled up together and causing part of the foam to be squeezed and damaged, further improving the reliability of the use of the equipment. The feeding position is located on the curved surface of the mixing drum 5, leaving one side of the mixing drum 5 free to facilitate the addition of an active stirring shaft and related stirring structures that are colinear with the axis of the mixing drum 5 as needed.
Claims
1. A concrete mixer for cantilever concrete member construction, characterized in that: The invention comprises a support (17), wherein a mixing drum (5) is arranged on the support (17), and a primary distribution hopper (1) is arranged on one side of the top of the support (17), and all liquid concrete raw materials, foam groups, and solid concrete raw materials less than the required amount are filled into the mixing drum (5) through the primary distribution hopper (1), and a secondary distribution hopper (2) is arranged on one side of the top of the support (17), and the remaining required amount of solid concrete raw materials is supplemented into the mixing drum (5) through the secondary distribution hopper (2), and the total distribution amount of solid concrete through the primary distribution hopper (1) and the secondary distribution hopper (2) is the required amount of solid materials in the foam concrete; After the foam group has been distributed through the primary distribution hopper (1), solid concrete raw materials are added through the secondary distribution hopper (2). The foam group is distributed through the primary distribution hopper (1) and the secondary distribution hopper (2) in sequence, so that the foam group can be first filled into the concrete slurry with a solid particle content lower than the required content and stirred, and then stirred in the concrete slurry with a solid particle content reaching the rated amount. A distribution mechanism is provided at the bottom of the secondary distribution hopper (2), and the distribution mechanism is used to assist in filling the material in the secondary distribution hopper (2) into the mixing drum (5) in multiple times in a uniform amount.
2. A concrete mixer for cantilever concrete member construction according to claim 1, characterized in that: The material distributing mechanism comprises a No. 2 material distributing pipe (4), the No. 2 material distributing pipe (4) being fixedly connected to the secondary material distributing hopper (2), a transmission shaft (15) being rotatably sleeved on one side of the No. 2 material distributing pipe (4) via a bearing, a material distributing blade (16) being fixedly sleeved on one end of the transmission shaft (15), and a rotating mechanism for driving the transmission shaft (15) to rotate being provided on the top of the bracket (17).
3. A concrete mixer for cantilever concrete member construction according to claim 2, characterized in that: The number of the distribution blades (16) is set to be a plurality and the plurality of distribution blades (16) are symmetrically arranged with respect to the axis of the transmission shaft (15) and are evenly spaced. The plurality of distribution blades (16) form a distribution wheel, and the rotation range of the distribution wheel is adapted to the size and shape of the inner wall of the second distribution pipe (4).
4. A concrete mixer for cantilever concrete member construction according to claim 2, characterized in that: The mixing drum (5) is rotatably mounted on the bottom of the bracket (17); an outer gear ring (11) is fixedly sleeved on the outer side of the mixing drum (5); a driving mechanism (7) for driving the outer gear ring (11) to rotate is disposed on one side of the bottom of the bracket (17); a discharge port is provided on one side of the mixing drum (5); a drum cover (8) for closing the discharge port is detachably disposed on the mixing drum (5); and the drum cover (8) is used to close the discharge port during mixing.
5. A concrete mixer for cantilever concrete member construction according to claim 4, characterized in that: A No. 1 material distribution pipe (3) for guiding material is fixedly connected to the bottom of the primary material distribution hopper (1), a connecting pipe (6) is fixedly connected to the bottom of the No. 2 material distribution pipe (4), the connecting pipe (6) connects the No. 2 material distribution pipe (4) and the No. 1 material distribution pipe (3), and a material feed port is provided on one side of the mixing drum (5).
6. A concrete mixer for cantilever concrete member construction according to claim 4, characterized in that: The driving mechanism (7) comprises a driving motor (701), the output end of the driving motor (701) being connected to a driving gear (702) via a rotating shaft, and the driving gear (702) and the outer gear ring (11) are meshed with each other.
7. A concrete mixer for cantilever concrete member construction according to claim 4, characterized in that: The rotating mechanism comprises a support rod (14), one end of the support rod (14) is fixedly connected to the connecting pipe (6), the other end of the support rod (14) is rotatably sleeved with a transmission gear (10) via a bearing, one end of the transmission shaft (15) located outside the second fabric pipe (4) is sleeved with a driven gear (9), the driven gear (9) and the transmission gear (10) are meshed with each other, and the transmission gear (10) and the outer gear ring (11) are meshed with each other.
8. A concrete mixer for cantilever concrete member construction according to any one of claims 4 or 7, characterized in that: A third distribution pipe (19) is fixedly connected to the bottom of the primary distribution hopper (1), one end of the third distribution pipe (19) is fixedly connected to the second distribution pipe (4), the third distribution pipe (19) communicates with the primary distribution hopper (1) and the second distribution pipe (4), a fixing ring (20) is fixedly connected to the bottom end of the second distribution pipe (4), the body of the mixing drum (5) is rotatably connected to the fixing ring (20), and a material guide port (21) corresponding to the channel position of the second distribution pipe (4) is provided at the top of the fixing ring (20).
9. A concrete mixer for cantilever concrete member construction according to claim 4, characterized in that: The bottom of the bracket (17) is fixedly connected to a support seat (18), the number of the support seats (18) is set to two and the two support seats (18) are respectively arranged on both sides of the mixing drum (5), the top of the support seat (18) is rotatably connected to a support ring (13), the support ring (13) is fixedly sleeved on the outside of the mixing drum (5), and a plurality of stirring blades (12) are fixedly arranged on the inside of the mixing drum (5).