A concrete precast component flattening device and method for fabricated buildings

Abstract

The application provides a concrete prefabricated component rubbing device for fabricated buildings, which comprises a crossbeam, vertical columns fixedly connected to both ends of the crossbeam, two moving mechanisms arranged on the crossbeam, a pushing mechanism and a rubbing mechanism fixedly connected to the lower ends of the two moving mechanisms respectively, the pushing mechanism comprising a first connecting rod, a feeding screw rod arranged below the first connecting rod, the rubbing mechanism comprising a bottom plate with a V-shaped or U-shaped cross section, the inside of the bottom plate being provided with a first shell and a second shell which are embraced into a cylindrical shape, the inside of the first shell and the second shell being provided with a vibrating rod and a coil group, the middle part of the vibrating rod being fixedly connected with a magnet group which is located inside the coil group, and both ends of the vibrating rod being fixedly connected with counterweight columns. The application ensures the flatness of the upper end of the concrete by previously arranging the upper end of the concrete and then using the rubbing mechanism.

Description

Technical Field

[0001] This invention relates to the field of concrete component production technology, and in particular to a leveling device and method for precast concrete components used in prefabricated buildings. Background Technology

[0002] Concrete components are building structural components made primarily of cement, sand, and gravel. Based on function and production method, they can be divided into two main categories: precast and cast-in-place. During production, methods such as vibration are used to remove internal air bubbles and improve the smoothness of the concrete, thus enhancing the surface quality of the components.

[0003] In mass production, the amount of concrete filled into each mold is fixed. However, during the subsequent vibration and leveling processes, some concrete falls out of the mold, causing discrepancies in the amount of concrete used, regardless of whether additional concrete is added. For example, the patent titled "A Leveling Device for Precast Concrete Components," application number "CN201921771261.8," only includes a movable leveling device, which cannot guarantee that concrete will be pushed out of the mold during the leveling process. Summary of the Invention

[0004] To address the aforementioned problems, this invention discloses a leveling device for precast concrete components used in prefabricated buildings. The device includes a crossbeam with columns fixedly connected to both ends. Two moving mechanisms are mounted on the crossbeam, with a pushing mechanism and a leveling mechanism fixedly connected to their lower ends, respectively. The pushing mechanism pushes the concrete to the center position, while the leveling mechanism vibrates the upper surface of the concrete until it is smooth.

[0005] The pushing mechanism includes a first connecting rod, and a feeding screw is provided below the first connecting rod. The blades on both sides of the feeding screw rotate in opposite directions. A first motor is fixedly connected to one end of the first connecting rod, and the output end of the first motor is fixedly connected to the feeding screw. That is, when the first motor is working, the feeding screw rotates, pushing the concrete on both sides to the middle of the material.

[0006] The smoothing mechanism includes a base plate with a V-shaped or U-shaped cross-section. A top cover is fixedly connected to the upper end of the base plate. Inside the base plate are a first outer shell and a second outer shell, both cylindrical in shape. A vibrating rod and a coil assembly are housed within the first and second outer shells. A magnet assembly is fixedly connected to the middle of the vibrating rod, located inside the coil assembly. Counterweights are fixedly connected to both ends of the vibrating rod, and a first spring is installed at the end of each counterweight, with the other end of the first spring abutting against the first outer shell. The magnetic field generated by the energized coil assembly, combined with the magnetic field, causes the vibrating rod to vibrate reciprocally, achieving a compaction effect. The first spring also serves as a buffer and transmits force, ensuring uniform vibration of the entire smoothing mechanism.

[0007] Preferably, the inner walls of both the first and second outer shells are fixedly connected with a plurality of limiting plates, and the vibration rod is provided with a limiting nut and a third spring. One end of the third spring abuts against the limiting nut, and the other end abuts against the limiting plate. The function of the third spring is similar to that of the first spring.

[0008] Preferably, a plurality of connecting screws are fixedly connected to the upper center of the top cover, and a fourth spring is vertically arranged in the middle of the plurality of connecting screws. Second springs are horizontally arranged on both sides of the bottom plate, and both the second and fourth springs abut against the moving mechanism. Vibration isolation is achieved through the second and fourth springs, which to some extent reduces the impact of vibrations generated by the smoothing mechanism on the moving mechanism.

[0009] Preferably, the moving mechanism includes a second connecting rod, with support plates fixedly connected to both ends. Rollers and clamping wheels are provided on the support plates. The rollers engage with the upper end of the crossbeam, and the clamping wheels engage with a pre-set slot at the bottom of the crossbeam. Rolling engagement on the crossbeam is achieved through the clamping wheels and rollers.

[0010] Preferably, an electric cylinder is fixedly connected to the support plate, and a connecting beam is fixedly connected to the output end of the electric cylinder. A pushing mechanism or a leveling mechanism is fixedly connected to the connecting beam. When the electric cylinder operates, it realizes the lifting and lowering of the pushing mechanism or the leveling mechanism.

[0011] Preferably, a second motor is fixedly connected to one of the support plates, and a second pulley is fixedly connected to the output end of the second motor. A first pulley is fixedly connected to the shaft of one of the rollers, and a belt is sleeved on the first and second pulleys. Starting the geothermal motor drives the roller to rotate via the second pulley, the belt, and the first pulley, thereby changing the position of the moving mechanism on the crossbeam.

[0012] A method for leveling precast concrete components for prefabricated buildings involves placing a mold filled with concrete below a leveling mechanism. Then, a moving mechanism is activated. First, an electric cylinder operates, causing a pushing mechanism to rest against the upper surface of the concrete. The bottom height of the pushing mechanism is precisely the height of the upper surface of the precast concrete component after molding. Next, a first motor operates, driving a feeding screw to rotate, pushing uneven parts to the middle of the feeding screw, i.e., the middle of the mold. At this point, the moving mechanism moves, evenly processing the concrete in the mold. Finally, the leveling mechanism descends and rests against the concrete surface. The coil assembly is energized, and the leveling mechanism vibrates the concrete. Simultaneously, the connected moving mechanism moves, and the leveling mechanism scrapes the upper surface of the concrete. During this process, the concrete in the middle moves to both sides under vibration and pushing. These steps are repeated multiple times to achieve a smooth upper surface of the concrete.

[0013] The beneficial effects of this invention are as follows: 1. Equipped with a pushing mechanism, this mechanism works in advance before leveling, pushing the protruding parts of the concrete surface to the middle. Then, the leveling mechanism moves during the vibration process and scrapes the protruding concrete in the middle. Under vibration and pushing, the concrete in this part "flows" to both sides and fills the uneven areas, thereby achieving a smooth concrete surface. During the process, it can ensure that the concrete does not fall out of the mold and ensures the accuracy of the dosage.

[0014] 2. The vibratory device consists of a first outer shell, a second outer shell, a coil group, a magnet group, etc. The structure is cylindrical and long, with a wide vibration coverage area. In addition, the counterweight column, the first spring, the third spring, and other components effectively improve the vibration effect.

[0015] 3. Second and fourth springs are provided to isolate vibration as much as possible and reduce the impact of vibration on the operation of the moving mechanism. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a three-dimensional schematic diagram of the pushing mechanism of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a three-dimensional schematic diagram of the moving mechanism of the present invention; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 This is an exploded schematic diagram of the leveling mechanism of the present invention; Figure 7 for Figure 6 A magnified view of point C in the middle.

[0017] List of reference numerals in the attached diagram: 1. Column; 2. Pushing mechanism; 3. Moving mechanism; 4. Leveling mechanism; 5. Crossbeam; 21. First connecting rod; 22. Feeding screw; 23. First motor; 31. Electric cylinder; 32. Roller; 33. Support plate; 34. Connecting beam; 35. Second connecting rod; 36. Second motor; 37. Belt; 38. First pulley; 39. Second pulley; 41. Base plate; 42. Vibrating rod; 43. First outer shell; 44. Magnet assembly; 45. Coil assembly; 46. Second outer shell; 47. Top cover; 48. Counterweight column; 49. First spring; 410. Second spring; 411. Mounting groove; 412. Limiting plate; 413. Limiting nut; 414. Third spring; 415. Connecting screw; 416. Fourth spring. Detailed Implementation

[0018] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0019] like Figures 1 to 7 As shown, a leveling device for precast concrete components used in prefabricated buildings includes a crossbeam 5, of which two crossbeams are provided. Each end of the crossbeam 5 is fixedly connected to a column 1, which is a square steel column and has a pad fixedly connected to its bottom. Two moving mechanisms 3 are mounted on the crossbeam 5. The lower ends of the two moving mechanisms 3 are respectively fixedly connected to a pushing mechanism 2 and a leveling mechanism 4. When the moving mechanism 3 is activated, the corresponding pushing mechanism 2 or leveling mechanism 4 moves, that is, it performs operations on the concrete surface.

[0020] The pushing mechanism 2 includes a first connecting rod 21, with both ends of the first connecting rod 21 being vertically folded. A feeding screw 22 is provided below the first connecting rod 21, and the blades on both sides of the feeding screw 22 rotate in opposite directions. During operation, the concrete is gathered in the middle to prevent it from being scraped off the mold during the leveling process. A first motor 23 is fixedly connected to one end of the first connecting rod 21, and the output end of the first motor 23 is fixedly connected to the feeding screw 22. When the first motor 23 is started, the feeding screw 22 is driven to rotate.

[0021] The leveling mechanism 4 includes a base plate 41, and the cross-sectional profile of the base plate 41 is V-shaped or U-shaped. This structure facilitates the leveling of concrete during forward movement. The upper end of the base plate 41 is fixedly connected to a top cover 47 to prevent concrete from entering the interior of the base plate 41. The interior of the base plate 41 is provided with a first outer shell 43 and a second outer shell 46 that are joined together to form a cylinder. That is, the first outer shell 43, the second outer shell 46 and their internal structures constitute a vibrating device. An installation groove 411 is also provided inside the base plate 41, and the first outer shell 43 and the second outer shell 46 are accommodated in the installation groove 411. Connecting ears are also provided on the side walls of the first outer shell 43 and the second outer shell 46, which are fixed by inserting bolts.

[0022] The first outer shell 43 and the second outer shell 46 are equipped with a vibrating rod 42 and a coil assembly 45. The vibrating rod 42 passes through the inside of the coil assembly 45. A magnet assembly 44 is fixedly connected to the middle of the vibrating rod 42 and is located inside the coil assembly 45. When the coil assembly 45 is energized, it generates a magnetic field, which interacts with the magnet assembly 44 to realize the axial movement of the vibrating rod 42. In addition, by controlling the magnitude, direction, and frequency of the current flowing through the coil assembly 45, the movement direction and speed of the vibrating rod 42 are realized, and the vibration effect is controlled. Both ends of the vibrating rod 42 are fixedly connected with counterweight columns 48 to improve the vibration effect. A first spring 49 is provided at the end of the counterweight column 48, and the other end of the first spring 49 abuts against the first outer shell 43. The first spring 49 is used for buffering and force transmission to ensure the transmission of vibration.

[0023] Several limiting plates 412 are fixedly connected to the inner walls of both the first outer shell 43 and the second outer shell 46. A limiting nut 413 and a third spring 414 are provided on the vibrating rod 42. One end of the third spring 414 abuts against the limiting nut 413, and the other end abuts against the limiting plate 412. A washer is also provided between the third spring 414 and the limiting nut 413. At this point, the function of the third spring 414 is the same as that of the first spring 49. Furthermore, during installation, the third spring 414 is not pre-tightened. After the vibrating rod 42, the first spring 49, the third spring 414, the counterweight column 48, and other structures are placed on the first outer shell 41, the limiting nut 413 is rotated to achieve pre-tightening of the third spring 414.

[0024] Several connecting screws 415 are fixedly connected to the upper middle part of the cover 47, and the connecting screws 415 are fixed to the lower part of the moving mechanism 3 with nuts. A fourth spring 416 is vertically arranged in the middle of the connecting screws 415. Second springs 410 are horizontally arranged on both sides of the bottom plate 41. The second springs 410 and the fourth spring 416 both abut against the moving mechanism 3. The arrangement of the second springs 410 and the fourth spring 416 is to isolate vibration as much as possible and reduce the impact of vibration on the moving mechanism 3.

[0025] The moving mechanism 3 includes a second connecting rod 35, and multiple second connecting rods 35 are provided. Both ends of the second connecting rod 35 are fixedly connected to a support plate 33. The support plate 33 is provided with a roller 32 and a clamping wheel. The roller 32 is engaged with the upper end of the crossbeam 5, and the clamping wheel is engaged with a pre-set slot at the bottom of the crossbeam 5. The moving mechanism is stably slidably engaged with the crossbeam 5 through the roller 32 and the clamping wheel.

[0026] An electric cylinder 31 is fixedly connected to the support plate 33. A connecting beam 34 is fixedly connected to the output end of the electric cylinder 31, and a pushing mechanism 2 or a leveling mechanism 4 is fixedly connected to the connecting beam 34. When the electric cylinder 31 is activated, the pushing mechanism 2 or the leveling mechanism 4 is raised or lowered. Furthermore, the first connecting rod 21 and the upper cover 47 are respectively fixedly connected to the corresponding connecting beam 34.

[0027] A second motor 36 is fixedly connected to one of the support plates 33. A second pulley 39 is fixedly connected to the output end of the second motor 36. A first pulley 38 is fixedly connected to the shaft of one of the rollers 32. A belt 37 is sleeved on the first pulley 38 and the second pulley 39. When the second motor 36 is started, the roller 32 is driven to rotate through the second pulley 39, the belt 37 and the first pulley 38, thus realizing the movement of the moving mechanism 3 on the crossbeam 5.

[0028] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A leveling device for precast concrete components used in prefabricated buildings, characterized in that, Includes a crossbeam (5), both ends of which are fixedly connected to columns (1), and two moving mechanisms (3) are mounted on the crossbeam (5). The lower ends of the two moving mechanisms (3) are respectively fixedly connected to a pushing mechanism (2) and a smoothing mechanism (4). The pushing mechanism (2) includes a first connecting rod (21), a feeding screw (22) is provided below the first connecting rod (21), and the blades on both sides of the feeding screw (22) rotate in opposite directions. One end of the first connecting rod (21) is fixedly connected to a first motor (23), and the output end of the first motor (23) is fixedly connected to the feeding screw (22). The smoothing mechanism (4) includes a base plate (41), and the cross-sectional profile of the base plate (41) is V-shaped or U-shaped. The upper end of the base plate (41) is fixedly connected to a top cover (47). The base plate (41) is provided with a first outer shell (43) and a second outer shell (46) that are joined together to form a cylinder. The first outer shell (43) and the second outer shell (46) are provided with a vibrating rod (42) and a coil group (45). The vibrating rod (42) is fixedly connected to a magnet group (44) in the middle, and the magnet group (44) is located inside the coil group (45). The vibrating rod (42) is fixedly connected to a counterweight column (48) at both ends. The counterweight column (48) is provided with a first spring (49) at the end, and the other end of the first spring (49) abuts against the first outer shell (43).

2. A leveling device for precast concrete components in prefabricated buildings according to claim 1, characterized in that: The inner walls of the first outer shell (43) and the second outer shell (46) are fixedly connected with several limiting plates (412). The vibration rod (42) is provided with a limiting nut (413) and a third spring (414). One end of the third spring (414) abuts against the limiting nut (413) and the other end abuts against the limiting plate (412).

3. A leveling device for precast concrete components in prefabricated buildings according to claim 1, characterized in that: The upper end of the cover (47) is fixedly connected with several connecting screws (415), and a fourth spring (416) is vertically arranged in the middle of the several connecting screws (415). The bottom plate (41) is horizontally arranged with second springs (410) on both sides. The second spring (410) and the fourth spring (416) both abut against the moving mechanism (3).

4. A leveling device for precast concrete components in prefabricated buildings according to claim 1, characterized in that: The moving mechanism (3) includes a second connecting rod (35), both ends of which are fixedly connected to a support plate (33). The support plate (33) is provided with a roller (32) and a clamping wheel. The roller (32) is fitted on the upper end of the crossbeam (5), and the clamping wheel is fitted in a pre-set slot at the bottom of the crossbeam (5).

5. A leveling device for precast concrete components in prefabricated buildings according to claim 4, characterized in that: An electric cylinder (31) is fixedly connected to the support plate (33), and a connecting beam (34) is fixedly connected to the output end of the electric cylinder (31). A pushing mechanism (2) or a flattening mechanism (4) is fixedly connected to the connecting beam (34).

6. A leveling device for precast concrete components in prefabricated buildings according to claim 4, characterized in that: A second motor (36) is fixedly connected to one of the support plates (33), and a second pulley (39) is fixedly connected to the output end of the second motor (36). A first pulley (38) is fixedly connected to the shaft of one of the rollers (32), and a belt (37) is sleeved on the first pulley (38) and the second pulley (39).

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