A precast slab leveling machine

Abstract

This utility model provides a precast slab leveling machine, relating to the field of leveling machine technology. The precast slab leveling machine includes a frame, with a cylinder fixed to the upper end of the frame. An adjusting frame is fixed to the driving end of the cylinder. Several upper leveling rollers are rotatably connected to the middle of the adjusting frame. A drive motor is fixed to one side of the frame, and a connecting rod is fixed to the driving end of the drive motor. An active leveling roller is fixed to the middle of the connecting rod, and a synchronous pulley is fixed to the other side of the connecting rod. Several other synchronous pulleys each have a driven leveling roller fixed to their middle. A connecting structure is provided at the other end of the connecting rod, and two limiting frames are provided on the connecting structure. This precast slab leveling machine, by driving the connecting rod to rotate via the drive motor, not only achieves a middle limiting effect, improving the leveling machine's performance, but also achieves rapid heat dissipation, extending the machine's service life.

Description

Technical Field

[0001] This utility model relates to a precast slab leveling machine, belonging to the field of leveling machine technology. Background Technology

[0002] In the field of modern construction, precast slabs are widely used in the floor, roof, and platform structures of industrial and civil buildings due to their advantages such as high production efficiency, stable quality, and mass production capability. With the accelerating pace of industrialization in construction, the industry's requirements for the precision and quality of precast slabs are constantly increasing. The flatness of precast slabs, as a key indicator of their quality, directly determines the stability and safety of the subsequent building structure under load, and also significantly impacts the construction effect and aesthetics during the decoration and finishing stage. During the precast slab production process, due to various factors such as material characteristics, mold errors, and curing conditions, the slabs are prone to warping and deformation. Therefore, after the precast slabs are formed, they must be leveled using professional leveling machines to eliminate deformation defects and ensure that the precast slabs meet the high precision requirements of construction, thus laying a solid foundation for the smooth implementation of high-quality construction projects.

[0003] Although existing leveling machines can meet the basic needs of daily leveling of precast slabs, two prominent problems still exist in actual operation, significantly affecting equipment efficiency and service life: Firstly, the leveling accuracy is difficult to guarantee. During the leveling operation, the pressure exerted by the leveling rollers on the precast slab can easily cause lateral or longitudinal positional shifts in the precast slab due to uneven force distribution and differences in roller surface friction. This shift not only causes the contact angle between the precast slab and the leveling rollers to deviate from the preset parameters, resulting in insufficient leveling force or excessive pressure in some areas, but also leads to irregular deformations such as edge warping and central depressions, directly resulting in a decline in leveling quality. In severe cases, it may even require rework, greatly reducing the actual effectiveness of the equipment and thus making the leveling machine less effective. Secondly, the equipment suffers from low heat dissipation efficiency. During high-intensity extrusion operations, the contact surface between the leveling rollers and the precast slab generates a significant amount of heat due to intense friction. Currently, the equipment relies solely on natural heat dissipation. However, as a metal component, the leveling rollers have a fast heat conduction speed but a limited heat dissipation area. Furthermore, the typically enclosed working environment allows heat to easily accumulate inside the rollers and surrounding components. Prolonged exposure to high temperatures not only exacerbates wear and deformation of the leveling rollers but also affects the stability of critical components such as the transmission system and hydraulic devices. This leads to accelerated aging of seals, bearing lubrication failure, and ultimately, a significant reduction in the overall lifespan of the leveling machine, resulting in a shorter overall service life. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a precast slab leveling machine, which overcomes the shortcomings of the prior art and effectively solves the problems of poor performance and short service life of the leveling machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A precast slab leveling machine includes a frame, a cylinder fixed to the upper end of the frame, an adjusting frame fixed to the driving end of the cylinder, a plurality of upper leveling rollers rotatably connected to the middle of the adjusting frame, a drive motor fixed to one side of the frame, a connecting rod fixed to the driving end of the drive motor, an active leveling roller fixed to the middle of the connecting rod, a synchronous pulley fixed to the other side of the connecting rod, and a driven leveling roller fixed to the middle of the other plurality of synchronous pulleys. The other end of the connecting rod is provided with a connecting structure, on which two limiting frames are provided; the connecting structure can move back and forth in opposite directions along the width of the frame with the two limiting frames to actively limit the precast plate that has passed through the active leveling roller, the driven leveling roller and the upper leveling roller to the central area.

[0006] Preferably, the connecting structure includes a drive frame, a connecting frame rotatably connected to the other end of the drive frame, a rotating rod rotatably connected to the other end of the connecting frame, a sliding frame rotatably connected to the other end of the rotating rod, two connecting frames rotatably connected to the upper end of the sliding frame, and a limit frame rotatably connected to the other end of each of the two connecting frames.

[0007] Preferably, one end of the drive frame is fixed to the end of the connecting rod away from the drive motor, the other end of the drive frame is rotatably connected to the upper end of the connecting frame, the lower end of the connecting frame is rotatably connected to one end of the rotating rod, the other end of the rotating rod is rotatably connected to one end of the sliding frame, the outer surface of the sliding frame is slidably connected to the inner wall of the middle part of the frame, and the vertical section of the sliding frame is L-shaped.

[0008] Preferably, the two connecting frames are rotatably connected at their proximal ends to the upper end of the sliding frame, and the two connecting frames are rotatably connected at their disjoint ends to one side of the two limiting frames. The outer surfaces of the two limiting frames are slidably connected to the inner walls of both sides of the frame. The cross-sections of the two limiting frames are T-shaped. The two limiting frames are arranged opposite to each other. The two limiting frames are in clearance fit with the active leveling roller and the driven leveling roller.

[0009] Preferably, several synchronous pulleys are connected by a synchronous belt, one of which is fixed in the middle to one side of a connecting rod, and the outer surface of the connecting rod is rotatably connected to the inner wall of one side of the frame. Several other synchronous pulleys are fixed in the middle to one side of a driven leveling roller, and the outer surfaces of several driven leveling rollers are rotatably connected to the inner wall of the frame. The outer surface of the adjusting frame is slidably connected to the inner wall of the frame, and the outer surfaces of several upper leveling rollers are rotatably connected to the inner wall of the adjusting frame in the middle. The active leveling roller, several driven leveling rollers, and several upper leveling rollers are staggered.

[0010] Preferably, a fixing block is fixed in the middle of each of the two limiting frames, and a rack frame is fixed at the lower end of each of the two fixing blocks. The two rack frames are meshed with a gear, and the middle of the gear is fixed to the upper end of the fan impeller.

[0011] Preferably, the upper ends of the two fixing blocks are fixed to the middle of the lower side of the two limiting frames, the lower ends of the two fixing blocks are fixed to the disjoint ends of the two rack frames, the two rack frames are meshed with the two sides of the gear, the middle part of the gear is fixed to the upper end of the fan impeller, and the outer surface of the fan impeller is rotatably connected to the inner wall of the middle part of the frame.

[0012] The beneficial effects of this utility model are as follows: 1. This precast slab leveling machine uses a drive motor to drive the connecting rod to rotate, which enables the drive frame, connecting frame, rotating rod, sliding frame, connecting frame and limiting frame to work together to achieve the effect of center limiting. This effectively avoids problems such as over- or under-leveling of the slab due to the contact angle between the precast slab and the leveling roller deviating from the preset parameters, significantly improving the leveling quality and thus improving the performance of the leveling machine. 2. This precast slab leveling machine uses a drive motor to drive the connecting rod to rotate, which allows the limit frame, fixing block, rack frame, gear, and impeller to work together to achieve rapid heat dissipation. This effectively avoids high-temperature environments caused by heat accumulation, thereby reducing problems such as thermal deformation of the leveling roller, aging of hydraulic system seals, and performance degradation of electronic components, thus extending the service life of the leveling machine. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of the frame of this utility model; Figure 4 This is a partial structural schematic diagram of the present invention.

[0014] In the diagram: 1. Frame; 2. Cylinder; 3. Adjusting frame; 4. Upper leveling roller; 5. Drive motor; 6. Connecting rod; 7. Active leveling roller; 8. Synchronous pulley; 9. Driven leveling roller; 10. Drive frame; 11. Connecting frame; 12. Rotating rod; 13. Sliding frame; 14. Connecting frame; 15. Limiting frame; 16. Fixing block; 17. Rack frame; 18. Gear; 19. Fan impeller. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments. Example

[0016] This utility model embodiment provides a precast slab leveling machine.

[0017] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The system includes a frame 1, with a cylinder 2 fixed to the upper end of the frame 1. An adjusting frame 3 is fixed to the driving end of the cylinder 2. Several upper leveling rollers 4 are rotatably connected to the middle of the adjusting frame 3. A drive motor 5 is fixed to one side of the frame 1. Both the drive motor 5 and the cylinder 2 are equipped with connecting wires and plugs, which can be plugged into an external socket to supply power. A connecting rod 6 is fixed to the driving end of the drive motor 5. An active leveling roller 7 is fixed to the middle of the connecting rod 6. One of the synchronous pulleys 8 is fixed to the other side of the connecting rod 6. Several other synchronous pulleys 8 are each fixed to the middle of a driven leveling roller 9. A connecting structure is provided at the other end of the connecting rod 6. The connecting structure includes a driving frame 10. A connecting frame 11 is rotatably connected to the other end of the driving frame 10. A rotating rod 12 is rotatably connected to the other end of the connecting frame 11. A sliding frame 13 is rotatably connected to the other end of the rotating rod 12. Two connecting frames 14 are rotatably connected to the upper end of the sliding frame 13. A limit frame 15 is rotatably connected to the other end of each of the two connecting frames 14.

[0018] Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 4It is worth noting that one end of the drive frame 10 is fixed to the end of the connecting rod 6 away from the drive motor 5, and the other end of the drive frame 10 is rotatably connected to the upper end of the connecting frame 11. The lower end of the connecting frame 11 is rotatably connected to one end of the rotating rod 12, and the other end of the rotating rod 12 is rotatably connected to one end of the sliding frame 13. The outer surface of the sliding frame 13 is slidably connected to the inner wall of the middle part of the frame body 1. The vertical section of the sliding frame 13 is L-shaped. The near ends of the two connecting frames 14 are rotatably connected to the upper end of the sliding frame 13, and the far ends of the two connecting frames 14 are rotatably connected to one side of the two limiting frames 15. The outer surfaces of the two limiting frames 15 are slidably connected to the inner walls of both sides of the frame body 1. The cross sections of the two limiting frames 15 are T-shaped. Two limiting frames 15 are arranged opposite each other, and the two limiting frames 15 are in clearance fit with the active leveling roller 7 and the driven leveling roller 9. Several synchronous pulleys 8 are connected by a synchronous belt. One of the synchronous pulleys 8 is fixed in the middle to one side of the connecting rod 6. The outer surface of the connecting rod 6 is rotatably connected to the inner wall of one side of the frame 1. The middle of the other several synchronous pulleys 8 is fixed to one side of the driven leveling roller 9. The outer surface of the several driven leveling rollers 9 is rotatably connected to the inner wall of the frame 1. The outer surface of the adjusting frame 3 is slidably connected to the inner wall of the frame 1. The outer surface of the several upper leveling rollers 4 is rotatably connected to the inner wall of the middle part of the adjusting frame 3. The active leveling roller 7, the several driven leveling rollers 9 and the several upper leveling rollers 4 are staggered.

[0019] In use, this invention works as follows: the drive motor 5 drives the connecting rod 6 to rotate, thereby causing the active leveling roller 7 fixed in the middle of the connecting rod 6 to rotate synchronously; simultaneously, the rotating connecting rod 6 drives the synchronous wheel 8 fixed at one end to rotate, and several synchronous wheels 8 are linked by a synchronous belt, causing the driven leveling roller 9 fixed with the other synchronous wheels 8 to rotate synchronously. During this process, the height can be adjusted by the cylinder 2 to drive the adjusting frame 3, which can be flexibly adapted according to the actual thickness of the precast slab. Several upper leveling rollers 4 rotatably connected to the inner wall of the adjusting frame 3 cooperate with the rotating active leveling roller 7 and driven leveling roller 9 below to perform precise leveling of the passing precast slab. Simultaneously, the drive frame 10, fixed at the other end of the connecting rod 6, rotates synchronously with it. Through the connecting frame 11 rotatably connected to the other end of the drive frame 10, the rotating rod 12 rotatably connected to the lower end of the connecting frame 11 moves. Since the other end of the rotating rod 12 is rotatably connected to the sliding frame 13, and the sliding frame 13 is constrained by the inner wall of the frame 1, the movement of the rotating rod 12 is converted into the up-and-down reciprocating sliding of the sliding frame 13. This reciprocating sliding, through the two connecting frames 14 rotatably connected to the upper end of the sliding frame 13, drives the two limiting frames 15 to move in opposite directions under the limiting action of the frame 1. In this way, the reciprocating limiting frames 15 can apply lateral thrust to the precast slab that has shifted position during the leveling process in real time, accurately pushing it back to the center area, forming a stable center limiting effect. Achieving the center limiting effect effectively avoids problems such as over- or under-leveling of the board material due to the contact angle between the precast slab and the leveling roller deviating from the preset parameters, significantly improving the leveling quality and thus enhancing the performance of the leveling machine. Example

[0020] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 Based on Embodiment 1, a rapid heat dissipation function has been added; Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 4 It is worth noting that each of the two limiting frames 15 has a fixing block 16 fixed in the middle, and each of the two fixing blocks 16 has a rack frame 17 fixed at the lower end. The two rack frames 17 are meshed with the gear 18. The middle of the gear 18 is fixed to the upper end of the fan impeller 19. The upper ends of the two fixing blocks 16 are fixed to the lower middle of the two limiting frames 15, and the lower ends of the two fixing blocks 16 are fixed to the disjoint ends of the two rack frames 17. The two rack frames 17 are meshed with the two sides of the gear 18. The middle of the gear 18 is fixed to the upper end of the fan impeller 19, and the outer surface of the fan impeller 19 is rotatably connected to the inner wall of the middle part of the frame 1.

[0021] In use, this invention works as follows: the drive motor 5 drives the connecting rod 6 to rotate, causing the drive frame 10, which is fixed to the connecting rod 6, to rotate synchronously. The rotation of the drive frame 10 is converted into the sliding frame 13 reciprocating up and down within the inner wall of the frame 1 through the connecting frame 11 and the rotating rod 12. The up and down movement of the sliding frame 13 is further driven by the two connecting frames 14 rotatably connected to its upper end, causing the two limiting frames 15 to reciprocate in opposite directions within the limiting tracks on both sides of the inner wall of the frame 1. As the two limiting frames 15 reciprocate in opposite directions, the fixed block 16 fixed in the middle of the limiting frame 15 also moves synchronously in opposite directions. This movement causes the two rack frames 17 at the lower end of the fixed block 16 to reciprocate in opposite directions. Since both rack frames 17 mesh with gears 18, when they reciprocate in opposite directions, the gears 18 will drive the fan impeller 19 fixed in the middle to reciprocate within the limiting area of ​​the inner wall of the middle of the frame 1 under the meshing action. The reciprocating fan impeller 19 significantly accelerates the local airflow speed by rapidly agitating the air with its blades. During the leveling operation, the rapidly flowing air continuously sweeps over the surface of the leveling roller and other heat-generating components, quickly carrying away heat through forced convection. This rapid heat dissipation effectively avoids high-temperature environments caused by heat accumulation, thereby reducing problems such as thermal deformation of the leveling roller, aging of hydraulic system seals, and performance degradation of electronic components, ultimately extending the service life of the leveling machine.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A precast slab leveling machine, comprising a frame (1), characterized in that: A cylinder (2) is fixed at the upper end of the frame (1), and an adjustment frame (3) is fixed at the driving end of the cylinder (2). Several upper leveling rollers (4) are rotatably connected in the middle of the adjustment frame (3). A drive motor (5) is fixed on one side of the frame (1), and a connecting rod (6) is fixed at the driving end of the drive motor (5). An active leveling roller (7) is fixed in the middle of the connecting rod (6), and one of the synchronous pulleys (8) is fixed on the other side of the connecting rod (6). A driven leveling roller (9) is fixed in the middle of each of the other synchronous pulleys (8). The other end of the connecting rod (6) is provided with a connecting structure, and two limiting frames (15) are provided on the connecting structure. The connecting structure can move back and forth in the opposite direction of the width of the frame (1) with the two limiting frames (15) to actively limit the precast plate that has passed through the active leveling roller (7), the driven leveling roller (9) and the upper leveling roller (4) to the central area.

2. The precast slab leveling machine according to claim 1, characterized in that: The connection structure includes a drive frame (10), a connecting frame (11) is rotatably connected to the other end of the drive frame (10), a rotating rod (12) is rotatably connected to the other end of the connecting frame (11), a sliding frame (13) is rotatably connected to the other end of the rotating rod (12), and two connecting frames (14) are rotatably connected to the upper end of the sliding frame (13), and a limit frame (15) is rotatably connected to the other end of each of the two connecting frames (14).

3. A precast slab leveling machine according to claim 2, characterized in that: One end of the drive frame (10) is fixed to the end of the connecting rod (6) away from the drive motor (5). The other end of the drive frame (10) is rotatably connected to the upper end of the connecting frame (11). The lower end of the connecting frame (11) is rotatably connected to one end of the rotating rod (12). The other end of the rotating rod (12) is rotatably connected to one end of the sliding frame (13). The outer surface of the sliding frame (13) is slidably connected to the inner wall of the middle part of the frame (1). The vertical section of the sliding frame (13) is L-shaped.

4. A precast slab leveling machine according to claim 2, characterized in that: The two connecting frames (14) are rotatably connected at their near ends to the upper end of the sliding frame (13), and the two connecting frames (14) are rotatably connected at their far ends to one side of the two limiting frames (15). The outer surfaces of the two limiting frames (15) are slidably connected to the inner walls on both sides of the frame (1). The cross-sections of the two limiting frames (15) are T-shaped. The two limiting frames (15) are arranged opposite to each other. The two limiting frames (15) are in clearance fit with the active leveling roller (7) and the driven leveling roller (9).

5. A precast slab leveling machine according to claim 1, characterized in that: Several synchronous pulleys (8) are connected by a synchronous belt. One of the synchronous pulleys (8) is fixed in the middle to one side of the connecting rod (6). The outer surface of the connecting rod (6) is rotatably connected to the inner wall of one side of the frame (1). Several other synchronous pulleys (8) are fixed in the middle to one side of the driven leveling roller (9). The outer surfaces of several driven leveling rollers (9) are rotatably connected to the inner wall of the frame (1). The outer surface of the adjusting frame (3) is slidably connected to the inner wall of the frame (1). The outer surfaces of several upper leveling rollers (4) are rotatably connected to the inner wall of the middle part of the adjusting frame (3). The active leveling roller (7), several driven leveling rollers (9) and several upper leveling rollers (4) are staggered.

6. A precast slab leveling machine according to claim 1, characterized in that: Both of the limiting frames (15) are fixed with a fixing block (16) in the middle, and both of the fixing blocks (16) are fixed with a rack frame (17) at the lower end. The two rack frames (17) are meshed with a gear (18), and the gear (18) is fixed at the upper end of the fan impeller (19) in the middle.

7. A precast slab leveling machine according to claim 6, characterized in that: The upper ends of the two fixing blocks (16) are fixed to the middle of the lower side of the two limiting frames (15), and the lower ends of the two fixing blocks (16) are fixed to the opposite ends of the two rack frames (17). The two rack frames (17) are meshed with the two sides of the gear (18). The middle part of the gear (18) is fixed to the upper end of the fan impeller (19), and the outer surface of the fan impeller (19) is rotatably connected to the inner wall of the middle part of the frame (1).

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