Preparation device of self-compacting concrete for building construction

Abstract

The utility model discloses a preparation device of self-compacting concrete for building construction, which comprises a support frame, the support frame is of an L-shaped structure, a lifting mechanism and a fixed plate are mounted on the side wall of the support frame, a movable plate is mounted on the lifting mechanism, a mixing hopper is fixed on the fixed plate, a discharge pipe is fixed at the bottom of the mixing hopper, and a discharge pipe is fixed at the bottom of the mixing hopper. And a shut-off valve is mounted in the discharging pipe. By means of the collaborative design of the lifting mechanism and the stirring mechanism, the problems that a traditional preparation device is uneven in stirring and large in motor loss are effectively solved, the lifting mechanism can dynamically adjust the stirring depth according to the material stacking state, and all layers of materials in the mixing hopper are effectively disturbed; a disturbance rod and a stirring blade in the stirring mechanism form an up-and-down synergistic stirring mechanism, stirring dead angles are eliminated, the device can realize all-directional uniform stirring without frequently starting and stopping the motor, the equipment loss is reduced, the service life of the motor is prolonged, and the stirring continuity and the preparation efficiency are also improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete preparation technology, and in particular to a device for preparing self-compacting concrete for building construction. Background Technology

[0002] In the field of building construction, self-compacting concrete is widely used in complex reinforced structures, thin-walled components, and underground engineering projects because it can flow under its own weight and fill the gaps in the formwork without the need for mechanical vibration. This type of concrete can not only significantly improve construction efficiency and reduce labor intensity, but also avoid problems such as steel bar displacement and aggregate segregation caused by traditional vibration, effectively ensuring the compactness and homogeneity of the concrete structure. It is especially suitable for building projects with high requirements for construction precision and durability.

[0003] In the prior art, the preparation device for self-compacting concrete usually adopts a structure with a motor-driven mixing shaft. This type of device mainly consists of a mixing tank, a vertically arranged mixing shaft, a drive motor, and a feeding / discharging mechanism. The motor drives the blades on the mixing shaft to rotate, disturbing and mixing raw materials such as cement, aggregates, and admixtures to prepare concrete mixture. This motor-driven mixing method has met the basic preparation needs for a certain period of time due to its simple structure and convenient operation.

[0004] However, existing preparation devices have significant shortcomings in practical applications. To achieve uniform mixing of concrete raw materials, existing devices often require frequent starting and stopping of the motor to change the rotation direction of the mixing shaft in order to eliminate the local uneven mixing caused by unidirectional mixing. This operation not only increases the start-stop losses of the motor, causing the equipment to overheat and even shorten the service life of the motor, but also affects the continuity of mixing due to the power interruption during the start-stop process, thereby reducing the preparation efficiency. To solve this problem, we propose a preparation device for self-compacting concrete in building construction. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for preparing self-compacting concrete for building construction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A device for preparing self-compacting concrete for building construction includes a support frame, which is L-shaped. A lifting mechanism and a fixed plate are installed on the side wall of the support frame. A movable plate is installed on the lifting mechanism. A mixing hopper is fixed on the fixed plate. A discharge pipe is fixed to the bottom of the mixing hopper. A shut-off valve is installed inside the discharge pipe. A cover plate is installed on the top of the mixing hopper. A mixing mechanism is installed on the cover plate and the movable plate. The mixing mechanism is inserted into and connected to the mixing hopper.

[0008] The stirring mechanism includes a second housing fixed to the cover plate and a second motor installed at the bottom of the movable plate. A turntable is rotatably connected to the bottom of the second housing. A spline sleeve is fixed on the turntable. The spline sleeve passes through the top of the second housing and is rotatably connected to it. A crossbar is fixed to the bottom of the turntable. A disturbance rod is installed at the bottom of the crossbar. A spline shaft is installed on the output shaft of the second motor. The spline shaft passes through the spline sleeve and is connected to the stirring blade.

[0009] Preferably, the spline sleeve passes through the crossbar and is fixed thereto.

[0010] Preferably, there are several disturbance rods, which are located at both ends of the bottom of the crossbar and are symmetrically distributed.

[0011] Preferably, the spline shaft and the spline sleeve are slidably connected by a spline.

[0012] Preferably, the lifting mechanism includes a slide groove formed on the side of the support frame, a threaded column fixed inside the slide groove, a threaded sleeve connected to the threaded column by threads, a first bevel gear fixedly sleeved on the threaded sleeve, a first housing rotatably connected to the threaded sleeve, a first motor mounted on the side of the first housing, and the output shaft of the first motor inserted into the interior of the first housing and connected to a second bevel gear.

[0013] Preferably, both the first bevel gear and the second bevel gear are located inside the first housing, and the first bevel gear and the second bevel gear are meshing transmissions.

[0014] Preferably, the first housing and the slide groove are slidably connected, and the movable plate is fixed to the side of the first housing.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model, through the setting of a lifting mechanism, uses a first motor to drive a second bevel gear to mesh with the first bevel gear, causing the threaded sleeve to move up and down along the threaded column, which in turn drives the movable plate and the stirring mechanism to rise and fall synchronously. This allows for the adjustment of the stirring blade at different heights within the mixing hopper, and the stirring depth can be dynamically adjusted according to the material accumulation state. This ensures that the materials in the upper, middle, and lower layers of the mixing hopper are effectively disturbed, avoiding the problem of uneven mixing caused by traditional fixed-height stirring, and significantly improving the uniformity and comprehensiveness of the stirring process.

[0017] In the mixing mechanism, the symmetrically distributed disturbance rods at the bottom of the crossbar and the mixing blades form a cooperative mixing mechanism. When the second motor drives the spline shaft to rotate, it drives the mixing blades to rotate at high speed through the spline sleeve, which strongly mixes the material at the bottom of the mixing hopper. The turntable drives the crossbar and disturbance rods to rotate synchronously, which creates radial disturbance to the middle and upper layers of material. This can effectively eliminate mixing dead zones and accelerate the mixing rate of raw materials such as cement and aggregates. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a self-compacting concrete preparation device for building construction proposed in this utility model.

[0019] Figure 2 for Figure 1 A sectional view of the lifting mechanism;

[0020] Figure 3 for Figure 1 Installation diagram of the mixing mechanism.

[0021] In the diagram: 1 Support frame, 2 Lifting mechanism, 21 Slide groove, 22 Threaded column, 23 Threaded sleeve, 24 First bevel gear, 25 First housing, 26 First motor, 27 Second bevel gear, 3 Movable plate, 4 Fixed plate, 5 Mixing hopper, 6 Discharge pipe, 7 Cover plate, 8 Stirring mechanism, 81 Second housing, 82 Turntable, 83 Spline sleeve, 84 Crossbar, 85 Disturbance rod, 86 Second motor, 87 Spline shaft, 88 Stirring blade, 9 Shut-off valve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-3 A device for preparing self-compacting concrete for building construction includes a support frame 1, which is an L-shaped structure. A lifting mechanism 2 and a fixed plate 4 are installed on the side wall of the support frame 1. A movable plate 3 is installed on the lifting mechanism 2. A mixing hopper 5 is fixed on the fixed plate 4. A discharge pipe 6 is fixed at the bottom of the mixing hopper 5. A shut-off valve 9 is installed inside the discharge pipe 6. A cover plate 7 is installed on the top of the mixing hopper 5. A mixing mechanism 8 is installed on the cover plate 7 and the movable plate 3. The mixing mechanism 8 is inserted into and connected to the mixing hopper 5.

[0024] In this embodiment, refer to Figure 1 and Figure 3The stirring mechanism 8 includes a second housing 81 fixed on the cover plate 7 and a second motor 86 installed at the bottom of the movable plate 3. A spline sleeve 83 is fixed on a turntable 82 rotatably connected to the bottom of the second housing 81. The spline sleeve 83 passes through the top of the second housing 81 and is fixed to the crossbar 84 to ensure that the crossbar 84 moves synchronously when the turntable 82 rotates. The two ends of the crossbar 84 are symmetrically distributed with disturbance rods 85, which can form radial disturbance to the upper layer of material in the mixing hopper 5 when rotating, eliminating the stirring dead angle. The spline shaft 87 on the output shaft of the second motor 86 is slidably connected to the spline sleeve 83 through the spline, which not only ensures that the power is transmitted to the stirring blade 88 to strongly stir the bottom material, but also allows the stirring blade 88 to move up and down with the spline shaft 87. The stirring depth can be adjusted in conjunction with the lifting mechanism. This structure significantly improves the uniformity and efficiency of material mixing through the up and down coordination of the disturbance rods 85 and the stirring blade 88.

[0025] In this embodiment, please refer to Figure 1 and Figure 2 The lifting mechanism 2 includes a chute 21 on the side of the support frame 1. A threaded sleeve 23 is threadedly connected to a threaded post 22 fixed inside the chute. The threaded sleeve 23 is driven by a first bevel gear 24 meshing with a second bevel gear 27 on the output shaft of the first motor 26. When the first motor 26 starts, the second bevel gear 27 drives the first bevel gear 24 to rotate, causing the threaded sleeve 23 to move up and down along the threaded post 22. This, in turn, drives the movable plate 3 and the spline rod and stirring blade in the stirring mechanism 8 to move up and down synchronously through the first housing 25. The sliding connection between the first housing 25 and the chute 21 ensures a smooth lifting process. This mechanism can dynamically adjust the stirring depth according to the material accumulation state in the mixing hopper 5: when the material accumulation is high, the stirring blade descends to enhance bottom stirring; after the material is evenly mixed, it is raised to the middle and upper layers to disturb, avoiding the local unevenness problem of traditional fixed-height stirring, while reducing the loss of frequent motor start-stop and ensuring continuous stirring.

[0026] When the second motor 86 starts, its output shaft drives the splined shaft 87 to rotate at high speed. Since the splined shaft 87 and the splined sleeve 83 are slidably connected by splines, the rotation of the splined shaft 87 is synchronously transmitted to the stirring blades 88, which strongly stir the material at the bottom of the mixing hopper 5. At the same time, the splined sleeve 83 passes through the top of the second housing 81 and is fixed to the turntable 82. When the splined sleeve 83 rotates due to the rotation of the splined shaft 87, the turntable 82 drives the crossbar 84 and the disturbance rod 85 to rotate synchronously. The disturbance rods 85 symmetrically distributed at the bottom of the crossbar 84 will form radial disturbances to the material in the upper layer of the mixing hopper 5, thus forming a coordinated stirring mechanism with the stirring blades 88 to achieve all-round mixing of the material.

[0027] When the mixing depth needs to be adjusted, the first motor 26 starts, and its output shaft drives the second bevel gear 27 to rotate. Since the second bevel gear 27 meshes with the first bevel gear 24, the first bevel gear 24 will drive the threaded sleeve 23 to rotate on the threaded column 22. The rotation of the threaded sleeve 23 causes it to move up and down along the threaded column 22, which in turn drives the movable plate 3 and the mixing mechanism 8 to rise and fall synchronously through the first housing 25. At this time, the mixing position of the mixing blade 88 and the disturbance rod 85 can be dynamically adjusted according to the accumulation state of the material in the mixing hopper 5: when the material is piled up high, the mixing blade 88 is lowered to a low position to enhance the mixing of the bottom material; when the material is gradually mixed evenly, the mixing mechanism can be raised to disturb the middle and upper layers of material. This adjustment method avoids the problem of uneven mixing caused by traditional fixed-height mixing, and does not require frequent starting and stopping of the motor to change the mixing direction. This reduces motor wear and ensures the continuity of mixing, significantly improving the uniformity and preparation efficiency of the self-compacting concrete mixture.

[0028] In summary, this invention effectively solves the problems of uneven mixing and high motor wear in traditional preparation devices through the coordinated design of the lifting mechanism and the stirring mechanism. The lifting mechanism can dynamically adjust the stirring depth according to the material accumulation state, so that all layers of material in the mixing hopper are effectively disturbed. In the stirring mechanism, the disturbance rod and the stirring blade form an upper and lower coordinated stirring mechanism, eliminating the stirring dead zone. This device can achieve all-round uniform stirring without frequent motor start and stop, which reduces equipment wear, extends motor life, and improves stirring continuity and preparation efficiency.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for preparing self-compacting concrete for building construction, comprising a support frame (1), characterized in that, The support frame (1) has an L-shaped structure. A lifting mechanism (2) and a fixed plate (4) are installed on the side wall of the support frame (1). A movable plate (3) is installed on the lifting mechanism (2). A mixing hopper (5) is fixed on the fixed plate (4). A discharge pipe (6) is fixed at the bottom of the mixing hopper (5). A shut-off valve (9) is installed inside the discharge pipe (6). A cover plate (7) is installed on the top of the mixing hopper (5). A stirring mechanism (8) is installed on the cover plate (7) and the movable plate (3). The stirring mechanism (8) is inserted into the interior of the mixing hopper (5) and connected to it. The stirring mechanism (8) includes a second housing (81) fixed on the cover plate (7) and a second motor (86) installed at the bottom of the movable plate (3). A turntable (82) is rotatably connected to the bottom of the second housing (81). A spline sleeve (83) is fixed on the turntable (82). The spline sleeve (83) passes through the top of the second housing (81) and is rotatably connected to it. A crossbar (84) is fixed at the bottom of the turntable (82). A disturbance rod (85) is installed at the bottom of the crossbar (84). A spline shaft (87) is installed on the output shaft of the second motor (86). The spline shaft (87) passes through the spline sleeve (83) and is connected to a stirring blade (88).

2. The apparatus for preparing self-compacting concrete for building construction according to claim 1, characterized in that, The spline sleeve (83) passes through the crossbar (84) and is fixed thereto.

3. The apparatus for preparing self-compacting concrete for building construction according to claim 1, characterized in that, The number of disturbance rods (85) is several, and the several disturbance rods (85) are located at both ends of the bottom of the crossbar (84) and are symmetrically distributed.

4. The apparatus for preparing self-compacting concrete for building construction according to claim 1, characterized in that, The spline shaft (87) and the spline sleeve (83) are connected by a spline sliding connection.

5. The apparatus for preparing self-compacting concrete for building construction according to claim 1, characterized in that, The lifting mechanism (2) includes a slide groove (21) on the side of the support frame (1). A threaded column (22) is fixed inside the slide groove (21). A threaded sleeve (23) is threadedly connected to the threaded column (22). A first bevel gear (24) is fixedly sleeved on the threaded sleeve (23). A first housing (25) is rotatably connected to the threaded sleeve (23). A first motor (26) is installed on the side of the first housing (25). The output shaft of the first motor (26) is inserted into the inside of the first housing (25) and connected to a second bevel gear (27).

6. The apparatus for preparing self-compacting concrete for building construction according to claim 5, characterized in that, The first bevel gear (24) and the second bevel gear (27) are both located inside the first housing (25), and the first bevel gear (24) and the second bevel gear (27) are meshing transmissions.

7. The apparatus for preparing self-compacting concrete for building construction according to claim 5, characterized in that, The first housing (25) and the slide (21) are slidably connected, and the movable plate (3) is fixed to the side of the first housing (25).

Images