Anti-clamping concrete stirring rod and stirring device

Abstract

The invention discloses an anti-clamping concrete stirring rod and a stirring device, the anti-clamping concrete stirring rod comprises a stirring shaft used for being connected with a driving device, the stirring shaft is fixedly connected with a stirring main paddle, and the stirring main paddle is further provided with a stirring auxiliary paddle for adjusting the stirring radius R of the stirring rod according to the stirring resistance. A structure combining the main paddle and the auxiliary paddle is adopted, specifically, the stirring rod is divided into a fixed part close to the stirring shaft to serve as the main stirring paddle to undertake a main stirring task, and the auxiliary stirring paddle capable of adaptively changing the relative angle with the main stirring paddle along with the resistance is further mounted on the outer side of the main stirring paddle. The stirring rod is used for adjusting the stirring radius of the whole stirring rod, meanwhile, the problem of clamping stagnation in the stirring process is avoided, and the stirring efficiency and the clamping stagnation prevention problem can be considered at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of construction machinery, in particular to the technical field of concrete mixing mechanical devices, and specifically to an anti-jamming concrete mixing rod and a mixing device. Background Art

[0002] Concrete preparation is an indispensable and important link in the construction and infrastructure industries. The existing commercial concrete used in infrastructure is generally completed by mixing stations, or cement mixers are used on site to complete the mixing of concrete. From the continuity of the discharge of the mixing device, the mixing device can be divided into batch mixing devices and continuous mixing devices; the so-called batch mixing device means that the mixing and preparation of concrete is completed in batches, that is, before the current concrete is mixed, the subsequent concrete cannot be mixed. Only after the current concrete is mixed and discharged, a new batch of materials can be added to mix and prepare a new batch of concrete. The so-called continuous mixing device means that in the process of preparing concrete, the mixed concrete has no batch distinction, and concrete materials are added continuously, and the finished concrete is also continuously discharged without interruption. The above two mixing devices have their own advantages and disadvantages. Usually, different mixing devices are arranged / selected according to the actual construction site to achieve an uninterrupted supply of concrete.

[0003] As for the continuous mixing device, its continuous discharging characteristic is more suitable for large-scale infrastructure projects than the batch discharging of the batch mixing device. For example, the foundation of a large building usually requires a continuous supply of concrete, which must be formed in one go. Therefore, the continuous mixing device has an excellent match in the concrete supply problem for large-scale infrastructure projects. However, the existing continuous mixing device has a structural drawback, that is, during the mixing process, the mixing device is easily affected by the aggregate in the concrete and causes jamming, damage to the mixing device and other problems. In order to solve this problem, the present invention has been specially developed. Summary of the invention

[0004] In order to solve the problem that the continuous mixing device is easily affected by the coarse aggregate in the concrete during the continuous mixing process, causing the mixing rod to get stuck, damaged, or even stuck, the present application provides an anti-stuck concrete mixing rod and a mixing device, which specifically solves the problem that the fixed structure mixing rod used in the prior art is prone to getting stuck.

[0005] In order to further analyze and clarify the deficiencies of the prior art, the present application summarizes the reasons why the fixed structure stirring rod in the prior art is prone to getting stuck as follows:

[0006] The mixing of concrete is to use a stirring rod or a stirring mechanism to rotate continuously in the concrete material to be mixed, so that the materials according to the predetermined ratio can be uniformly mixed to form concrete. However, there is a gap between the stirring rod and the inner wall of the device (such as a mixing barrel) that contains the concrete material, which may be large or small. The main reason for the jamming of the stirring rod is that the coarse aggregate (such as stone) as a part of the concrete is stuck between the gap between the stirring rod and the mixing barrel. Since the coarse aggregate has an irregular shape, under the strong driving force of the continuously rotating stirring rod, the stirring rod or the inner wall of the mixing barrel may be deformed, the coarse aggregate may be crushed, or the stirring rod may be stuck; no matter what happens, it will have a negative impact on the mixing of concrete. In the prior art, in order to avoid the problem of damage or jamming of the mixing equipment due to the jamming of the coarse aggregate, the gap between the stirring rod and the mixing barrel is generally controlled to be very small, so small that the coarse aggregate cannot be stuck in the mixing gap or even if a smaller aggregate is stuck, it will not cause damage to the stirring rod. However, although the structure of reducing the mixing gap can effectively reduce or even eliminate the aggregate jamming problem during the mixing process, this structure is usually suitable for batch mixing devices, that is, the concrete materials to be mixed are mixed and then circulated and stirred in a fixed mixing barrel until they are mixed evenly. This structure is not suitable for continuous mixing, because the structure of the continuous mixing device for accommodating and mixing materials is different from the structure of the mixing barrel of the batch mixing device, which is open at the upper end and closed at the lower end. The mixing barrel of the continuous mixing device is open at both ends. If the stirring rod is rotated close to the inner wall of the mixing barrel, the material will flow in a spiral along the mixing barrel. The mixing effect on the material during mixing is not significant, making it difficult to mix evenly; however, if the gap between the stirring rod and the inner wall of the mixing barrel is increased, coarse aggregate will be jammed. In order to solve the problem of coarse aggregate jamming during the mixing process, while being able to produce a greater mixing effect on the material as much as possible to meet the needs of continuous mixing, the present invention provides an anti-jamming concrete stirring rod and stirring device.

[0007] In order to achieve the above purpose, the technical solution adopted in this application is:

[0008] The anti-jamming concrete stirring rod comprises a stirring shaft for connecting to a driving device, a stirring main paddle fixedly connected to the stirring shaft, and a stirring auxiliary paddle installed on the stirring main paddle for adjusting the stirring radius R of the stirring rod according to the stirring resistance. The stirring radius R refers to the maximum radius of the rotating body generated by the stirring rod during the rotating stirring process, that is, the maximum radius of the structure that can effectively stir the concrete material. The stirring auxiliary paddle is a structure that can adjust the size of the stirring radius R. When the stirring auxiliary paddle is subjected to resistance, the stirring radius R of the entire stirring rod is reduced by deformation or angle deflection, thereby increasing the gap for coarse aggregate to pass through, thereby solving the problem of coarse aggregate jamming.

[0009] In order to better adjust the stirring radius R, preferably, the main stirring paddle includes an axial rod for fixedly connecting the axial rod and the radial rod of the stirring shaft, and the auxiliary stirring paddle is hinged to the axial rod on the side of the stirring main paddle away from the stirring shaft in the radial direction through at least one hinge mechanism.

[0010] Preferably, the articulated mechanism includes a first connecting plate fixedly connected to the stirring auxiliary paddle, a first ring connected to the first connecting plate, which is sleeved on the outermost axial rod and rotates around the axial rod, and a deformation energy storage mechanism installed on the axial rod for keeping the first connecting plate in an initial position.

[0011] Preferably, the articulated mechanism includes an articulated shaft, and the articulated shaft is rotatably sleeved with a first ring and a second ring, the first ring is fixedly connected to the stirring auxiliary paddle via a first connecting plate, and the second ring is fixedly connected to the outermost axial rod via a second connecting plate, and a deformation energy storage mechanism is also installed on the articulated shaft for keeping the first connecting plate in an initial position.

[0012] Preferably, the deformation energy storage mechanism is any one of a torsion spring, a spring sheet or a combination of a torsion spring and a spring sheet.

[0013] Preferably, the axial rods are distributed in a circular array with the stirring shaft as the center, and a stirring auxiliary propeller is hingedly mounted on at least one of the outermost axial rods.

[0014] The present invention also provides a stirring device, comprising a stirring barrel having a cavity for accommodating stirred materials, the stirring barrel adopts a structure with one end open or both ends open, the stirring barrel is installed with the above-mentioned anti-jamming concrete stirring rod, there is a gap between the stirring rod and the inner wall of the stirring barrel, the stirring rod is provided with a stirring auxiliary paddle, and the stirring auxiliary paddle adjusts the size of the gap according to the size of the resistance encountered during the stirring process.

[0015] Beneficial effects:

[0016] The present invention adopts a structure of a combination of a main propeller and a secondary propeller. Specifically, the stirring rod is divided into a fixed part close to the stirring shaft as a main stirring propeller, which undertakes the main stirring task. A secondary stirring propeller is also installed on the outside of the main stirring propeller. The secondary stirring propeller can adaptively change the relative angle with the main stirring propeller according to the resistance size, and is used to adjust the stirring radius of the entire stirring rod, while avoiding the problem of jamming during the stirring process. It can take into account both stirring efficiency and anti-jamming problems.

[0017] The present invention can select different auxiliary stirring paddle structures according to the content and particle size of coarse aggregate in the mixing material. For the mixing of concrete materials with larger coarse aggregate particle size or larger coarse aggregate density, an auxiliary stirring paddle with a larger adjustment range can be selected; on the contrary, for the mixing of concrete materials with smaller coarse aggregate particle size or smaller coarse aggregate density, an auxiliary stirring paddle with a smaller adjustment range can be selected, thereby meeting various concrete mixing requirements and comprehensively solving the problems of stagnation and unevenness in continuous concrete mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 It is a front view of an embodiment of the present invention adopting an asymmetric structure.

[0020] Figure 2 yes Figure 2 Axonometric drawing of the structure.

[0021] Figure 3 yes Figure 1 Front view with symmetrical structure.

[0022] Figure 4 yes Figure 3 Axonometric drawing of the structure.

[0023] Figure 5 It is a front view of an asymmetric structure of another embodiment of the present invention.

[0024] Figure 6 yes Figure 5 Enlarged view of the structure of area A in the middle.

[0025] Figure 7 yes Figure 5 Axonometric drawing of the structure.

[0026] Figure 8 yes Figure 7 Enlarged view of the structure of area B in the middle.

[0027] Fig. 9 It is a cross-sectional diagram showing the stirring auxiliary paddle of the stirring rod provided by the present invention in an initial state.

[0028] Fig.10 yes Fig. 9 A cross-sectional illustration of the auxiliary mixing propeller in the state of being subjected to resistance and avoiding coarse aggregate.

[0029] In the figure: 1- stirring shaft; 2- stirring main paddle; 21- axial rod; 22- radial rod; 3- stirring auxiliary paddle; 4- hinged mechanism; 41- first connecting plate; 42- first ring; 43- hinged shaft; 44- second ring; 45- second connecting plate. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] Embodiment 1:

[0037] See the instruction manual Figure 1-Figure 2 The anti-jamming concrete stirring rod shown includes a stirring shaft 1 for connecting to a driving device, a stirring main paddle 2 is fixedly connected to the stirring shaft 1, and a stirring auxiliary paddle 3 is also installed on the stirring main paddle 2 for adjusting the stirring radius R of the stirring rod according to the stirring resistance. The stirring radius R refers to the maximum radius of the rotating body generated by the stirring rod during the rotating stirring process, that is, the maximum radius of the structure that can effectively stir the concrete material. The stirring auxiliary paddle 3 is a structure that can adjust the size of the stirring radius R. When the stirring auxiliary paddle 3 is subjected to resistance, the stirring radius R of the entire stirring rod is reduced by deformation or angle deflection, thereby increasing the gap for coarse aggregate to pass through, thereby solving the problem of coarse aggregate jamming.

[0038] See the instruction manual Fig. 9 As shown, when the stirring rod provided in this embodiment is in the stirring process, the stirring main paddle 2 and the stirring auxiliary paddle 3 are in a superimposed state in the radial direction or radial direction of the stirring rod, and the stirring radius R of the rotating body formed by the rotation of the stirring rod is jointly determined by the stirring main paddle 2 and the stirring auxiliary paddle 3, as shown in FIG. Fig. 9 As shown in the figure, when the resistance of the stirring rod is not enough to make the auxiliary stirring blade 3 deflect or deform compared with the main stirring blade 2, the current state is that the stirring radius R is at the maximum state; when during the mixing process, the auxiliary stirring blade 3 is subjected to resistance from the cement mortar or when the coarse aggregate in the concrete is stuck between the auxiliary stirring blade 3 and the mixing barrel, the auxiliary stirring blade 3 is deflected or deformed compared with the main stirring blade 2, see the attached Fig.10 As shown, the gap between the stirring auxiliary propeller 3 and the stirring barrel will become larger to avoid jamming, so that stirring can continue smoothly. It is worth noting that for the convenience of description, the stirring barrel is mentioned above. The stirring barrel in this embodiment should be understood in a broad sense, that is, all containers or structures that cooperate with the stirring rod described in this embodiment and are used to contain stirring materials can be understood as the stirring barrel mentioned above. Figure 1 and Fig.10Both show a solution for adjusting the stirring radius R by deflecting the stirring auxiliary paddle 3 compared to the stirring main paddle 2; in addition, the stirring auxiliary paddle 3 can also be set to a deformable structure, such as rubber, silicone rubber and other materials that have certain strength and deformation ability. The structure and material of the stirring auxiliary paddle 3 should not be limited to understanding.

[0039] See the instruction manual Figure 3 and Figure 4 As shown, the stirring auxiliary blade 3 can be arranged in a symmetrical structure, such as axisymmetric or central symmetric, or as shown in FIG. Figure 1 The asymmetric structure is shown;

[0040] Embodiment 2:

[0041] In order to better adjust the stirring radius R, the present embodiment provides a detailed structure and connection relationship between the stirring main blade 2 and the stirring auxiliary blade 3, see the attached manual. Figure 3 and Figure 4 As shown, the stirring main paddle 2 includes an axial rod 21, which is used to fix the axial rod 21 and the radial rod 22 of the stirring shaft 1, and the stirring auxiliary paddle 3 is hinged to the axial rod 21 on the side of the stirring main paddle 2 away from the stirring shaft 1 in the radial direction through at least one hinge mechanism 4. This embodiment provides a technical solution for connecting the stirring auxiliary paddle 3 and the stirring main paddle 2 together through the hinge mechanism 4. Under this structure, the adjustment range of the stirring radius R depends on the wheelbase L3 between the stirring auxiliary paddle 3 and the axial rod 21. There are many ways to implement this structure, for example, see the attached Figure 1 As shown, the central axis of the deflection of the auxiliary stirring paddle 3 is the axial rod 21. This structure is the simplest. When the auxiliary stirring paddle 3 encounters resistance, it deflects around the axial rod 21 corresponding to the hinged connection, so that the coarse aggregate that may be stuck can pass smoothly. Compared with the existing fixed stirring rod, which cannot deflect to change the stirring radius R, this fundamentally solves the problem of the stirring rod being stuck by coarse aggregate or stone.

[0042] In this embodiment, in order to further improve the flexibility of the stirring auxiliary paddle 3, that is, when the stirring auxiliary paddle 3 may be stuck, the stirring auxiliary paddle 3 can reduce the stirring radius R of the stirring rod, but when there is no jamming, the stirring auxiliary paddle 3 can be deflected at a small angle as close to the initial state or the initial state as possible, the hinge mechanism 4 includes a first connecting plate 41 fixedly connected to the stirring auxiliary paddle 3, a first sleeve ring 42 connected to the first connecting plate 41 and sleeved on the outermost axial rod 21 and rotating around the axial rod 21, and a deformation energy storage mechanism installed on the axial rod 21 for keeping the first connecting plate 41 in the initial position, which is not shown in the figure. The deformation energy storage mechanism is any one of a torsion spring, a spring sheet, or a combination of a torsion spring and a spring sheet. It is worth noting that the first sleeve ring 42 can adopt an open sleeve ring or a closed sleeve ring structure to meet different installation methods.

[0043] Embodiment 3:

[0044] This embodiment also provides another structural solution of the hinge mechanism 4, see the attached specification. Figure 6-Figure 8 As shown, the hinge mechanism 4 includes a hinge shaft 43, the hinge shaft 43 is rotatably sleeved with a first sleeve ring 42 and a second sleeve ring 44, the first sleeve ring 42 is fixedly connected to the stirring auxiliary paddle 3 through a first connecting plate 41, and the second sleeve ring 44 is fixedly connected to the outermost axial rod 21 through a second connecting plate 45, and a deformation energy storage mechanism for keeping the first connecting plate 41 in the initial position is also installed on the hinge shaft 43. The deformation energy storage mechanism is any one of a torsion spring, a spring sheet, or a combination of a torsion spring and a spring sheet. The biggest difference between this embodiment and the second embodiment is that the hinge shaft 43 of the hinge mechanism 4 is no longer the axial rod 21, but the hinge shaft 43 arranged between the axial rod 21 and the auxiliary stirring paddle 3. On the premise that the wheelbase L3 between the axial rod 21 and the auxiliary stirring paddle 3 remains unchanged, the larger the wheelbase L2 between the hinge shaft 43 and the axial rod 21, the smaller the wheelbase L1 between the hinge shaft 43 and the auxiliary stirring paddle 3, the smaller the effective adjustment capacity or adjustment range, and it is suitable for mixing materials with smaller aggregate particle size in concrete; on the contrary, on the premise that the wheelbase L3 between the axial rod 21 and the auxiliary stirring paddle 3 remains unchanged, the smaller the wheelbase L2 between the hinge shaft 43 and the axial rod 21, the larger the wheelbase L1 between the hinge shaft 43 and the auxiliary stirring paddle 3, the larger the effective adjustment capacity or adjustment range, and it is suitable for mixing materials with larger aggregate particle size or higher proportion of coarse aggregate in concrete; the axial rods 21 are distributed in a circular array with the stirring shaft 1 as the center, and at least one of the outermost axial rods 21 is hingedly mounted with the auxiliary stirring paddle 3. That is, the number of the auxiliary stirring blades 3 can be 1, 2, 3, 4, 5, 6 or more; they can be evenly distributed in a circular array or unevenly distributed, see the attached manual for details. Figure 4-Figure 5As shown; uniform distribution is preferred, so that the degree of balance during the stirring process will be higher; but in view of the fact that the actual stirring speed is usually lower than 200 rpm, the centrifugal vibration caused by the non-uniform distribution will not be very obvious. At the same time, it can also break the balance of the material in the stirring process to a certain extent, increase the degree of disorder, and have a positive effect on rapid and uniform stirring.

[0045] Embodiment 4:

[0046] The present invention also provides a stirring device, comprising a stirring barrel having a cavity for accommodating a stirred material, wherein the stirring barrel adopts a structure with one end open or both ends open, wherein an anti-jamming concrete stirring rod of any of the above embodiments is installed in the stirring barrel, wherein a gap is provided between the stirring rod and the inner wall of the stirring barrel, wherein a stirring auxiliary paddle 3 is provided on the stirring rod, wherein the stirring auxiliary paddle 3 adjusts the size of the gap according to the size of the resistance encountered during the stirring process, and a cross-sectional schematic diagram during stirring is shown in FIG. Figure 9-10 shown.

[0047] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An anti-jamming concrete stirring rod, comprising a stirring shaft (1) for connecting to a driving device, wherein a stirring main paddle (2) is fixedly connected to the stirring shaft (1), characterized in that: The main stirring blade (2) is also provided with a secondary stirring blade (3) for adjusting the stirring radius R of the stirring rod according to the magnitude of the stirring resistance.

2. The anti-stuck concrete stirring rod according to claim 1, characterized in that: The main stirring paddle (2) comprises an axial rod (21) for fixedly connecting the axial rod (21) and a radial rod (22) of the stirring shaft (1); the auxiliary stirring paddle (3) is hinged to the axial rod (21) on a side of the main stirring paddle (2) away from the stirring shaft (1) in a radial direction via at least one hinge mechanism (4).

3. The anti-stuck concrete stirring rod according to claim 2, characterized in that: The hinge mechanism (4) comprises a first connecting plate (41) fixedly connected to the stirring auxiliary paddle (3), a first ring (42) connected to the first connecting plate (41) and sleeved on the outermost axial rod (21) and rotating around the axial rod (21), and a deformation energy storage mechanism installed on the axial rod (21) for keeping the first connecting plate (41) in an initial position.

4. The anti-stuck concrete stirring rod according to claim 2, characterized in that: The hinge mechanism (4) comprises a hinge shaft (43), and the hinge shaft (43) is rotatably sleeved with a first ring (42) and a second ring (44), the first ring (42) being fixedly connected to the stirring auxiliary paddle (3) via a first connecting plate (41), and the second ring (44) being fixedly connected to the outermost axial rod (21) via a second connecting plate (45), and the hinge shaft (43) is also provided with a deformation energy storage mechanism for keeping the first connecting plate (41) in an initial position.

5. The anti-stuck concrete stirring rod according to claim 3 or 4, characterized in that: The deformation energy storage mechanism is any one of a torsion spring, a spring sheet or a combination of a torsion spring and a spring sheet.

6. The anti-stuck concrete stirring rod according to claim 2, characterized in that: The axial rods (21) are distributed in a circular array with the stirring shaft (1) as the center, and a stirring auxiliary paddle (3) is hingedly mounted on at least one of the outermost axial rods (21).

7. A stirring device, characterized in that: The invention comprises a mixing barrel having a cavity for accommodating materials to be mixed, wherein the mixing barrel adopts a structure with one end open or both ends open, wherein the mixing barrel is installed with the anti-jamming concrete mixing rod according to claim 1-4 or 6, wherein a gap is provided between the mixing rod and the inner wall of the mixing barrel, and wherein the mixing rod is provided with a mixing auxiliary paddle (3), wherein the mixing auxiliary paddle (3) adjusts the size of the gap according to the size of the resistance encountered during the mixing process.

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