A screed assembly for an automatic screed

Abstract

The utility model relates to a kind of trowel head assembly for automatic trowel, including horizontal sliding bracket, connecting horizontal moving slider;Lifting mechanism, connecting horizontal sliding bracket upper end, including lift base, the upper end of fixed connection in horizontal sliding bracket, lifting drive cylinder, fixedly installed on the upper end surface of lift base;Vertical sliding bracket seat, connecting the piston rod of lifting drive cylinder;Vertical linear guide rail assembly, install between vertical sliding bracket seat and horizontal sliding bracket;Troweling motor, vertically install in vertical sliding bracket seat;The output end of troweling motor is connected with grinding disc.The trowel head assembly greatly improves the quality and efficiency of troweling operation, reduces manual labor intensity, and provides powerful equipment support for the production of wind power generation tower cylinder prefabricated concrete segment.

Description

Technical Field

[0001] This utility model belongs to the technical field of surface treatment equipment for precast concrete components, and particularly relates to a trowel assembly for an automatic troweling machine. Background Technology

[0002] Smoothing the concrete surface is a crucial step in ensuring the quality and appearance of precast concrete components. Whether it's the ground, walls, or some special structures (such as precast concrete components for wind turbine towers), the concrete surface needs to undergo meticulous smoothing to eliminate unevenness, air bubbles, and other defects, achieving the required flatness and smoothness as designed.

[0003] Traditional concrete smoothing operations rely primarily on manual labor, with workers repeatedly scraping and smoothing the concrete surface using hand-held tools. This method has several drawbacks. First, manual labor is physically demanding, and prolonged periods of high-intensity work can easily lead to worker fatigue, affecting the quality and efficiency of the smoothing process. Second, manual operation makes it difficult to guarantee consistency and precision in smoothing; differences in the techniques and pressure applied by different workers result in inconsistent concrete surface quality, failing to meet the high-quality concrete surface requirements of modern construction. Furthermore, manual smoothing is slow, unable to keep pace with the schedule demands of large-scale construction projects, leading to extended construction periods.

[0004] With the development of automation technology, some automatic troweling equipment has gradually appeared on the market. However, existing automatic troweling machine assemblies have some shortcomings. The structural design of some assemblies is not reasonable enough, resulting in poor stability during horizontal movement and vertical lifting, easily leading to wobbling or displacement. This causes inaccurate positioning of the troweling motor and grinding disc, affecting the troweling effect. Furthermore, the lifting mechanism of some assemblies lacks sufficient power or flexibility, failing to make precise adjustments based on the actual height and unevenness of the concrete surface, thus preventing the troweling operation from achieving the desired effect. In addition, existing troweling assemblies have limited adaptability to different construction environments and working conditions, making it difficult to meet diverse building construction needs.

[0005] Therefore, developing a trowel assembly for an automatic troweling machine that is structurally sound, stable, flexible in adjustment, and adaptable to different working conditions is of significant practical importance. This trowel assembly for an automatic troweling machine was developed to address the problems existing in current technologies and improve the quality and efficiency of concrete troweling operations. Utility Model Content

[0006] In view of the problems existing in the prior art, this utility model provides a trowel head assembly for an automatic troweling machine.

[0007] This utility model is implemented as follows: an automatic trowel assembly for a troweling machine includes a horizontal carriage base and a horizontal sliding block connected to it.

[0008] The lifting mechanism is connected to the upper end of the horizontal carriage base, including a lifting platform base, which is fixedly connected to the upper end of the horizontal carriage base, and a lifting drive cylinder, which is fixedly installed on the upper surface of the lifting platform base.

[0009] Vertical carriage base, connected to the piston rod of the lifting drive cylinder;

[0010] A vertical linear guide assembly is installed between a vertical carriage base and a horizontal carriage base;

[0011] The smoothing motor is vertically mounted inside the vertical carriage base; the output end of the smoothing motor is connected to the grinding disc.

[0012] A further preferred embodiment includes a grinding disc swing mechanism, hingedly mounted within a vertical carriage seat, and the smoothing motor is mounted on the grinding disc swing mechanism.

[0013] More preferably, the grinding disc oscillation mechanism includes a left and right swing frame fixedly mounted on a vertical carriage seat in the vertical direction, an active swing arm and a driven swing arm, a smoothing motor fixedly connected, and the active and driven swing arms are hinged in the vertical carriage seat through a support shaft; the active swing arm extends vertically upward to the upper end of the left and right swing frames, and an active swing rod is provided at the upper end of the active swing arm in the vertical direction, the active swing rod being inserted into the elongated hinge hole of the hinge joint.

[0014] More preferably, the hinged joint includes a T-shaped joint and a U-shaped joint. The other end of the T-shaped joint is connected to the left swing drive cylinder, which is fixedly installed on the left swing frame. The other end of the U-shaped joint is connected to the right swing drive cylinder, which is fixedly installed on the right swing frame.

[0015] In a further preferred embodiment, guide rods are provided on both sides of the lifting drive cylinder, with the lower end of the guide rod connected to a horizontal slide seat and the upper end slidably inserted into a guide hole on the lifting base.

[0016] The automatic trowel assembly has significant overall technical advantages.

[0017] From a basic structural perspective, the horizontal carriage base connects to the transverse sliding block, enabling horizontal movement and facilitating smoothing operations at different locations. In the lifting mechanism, the lifting platform base is fixed to the upper end of the horizontal carriage base, and the lifting drive cylinder is mounted on the lifting platform base. Through a piston rod, it drives the vertical carriage base to move up and down. This, combined with the vertical linear guide rail assembly, ensures the stability and precision of the vertical carriage base during lifting, allowing the grinding disc to be precisely adjusted according to the height of the concrete surface, guaranteeing smoothing quality.

[0018] The grinding disc oscillation mechanism further enhances the smoothing effect. Hinged within the vertical carriage base, this mechanism allows the smoothing motor and grinding disc to oscillate. The coordination of the left and right swing arms, the active and driven swing arms, and the connection between the active swing arm and the hinged joint make the grinding disc oscillation more flexible. By driving the T-joint and U-joint with the left and right swing drive cylinders respectively, the grinding disc can oscillate in different directions, better adapting to unevenness and complex shapes of the concrete surface, effectively eliminating smoothing dead corners, and resulting in a smoother, more even concrete surface after smoothing.

[0019] In summary, the automatic trowel assembly, through its rational structural design, achieves functions such as horizontal movement, vertical lifting, and grinding disc oscillation, improving the flexibility, precision, and comprehensiveness of troweling operations, and significantly enhancing troweling quality and efficiency. Attached Figure Description

[0020] Figure 1 and Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the machine head structure after removing the horizontal carriage seat and smoothing it out;

[0022] Figure 4 This is a schematic diagram of the internal structure of the machine head after removing the horizontal carriage seat and smoothing it out;

[0023] Figure 5 and Figure 6 This is a schematic diagram of the installation structure of the trowel assembly for an automatic troweling machine;

[0024] Figure 7 This is a schematic diagram of a frame beam structure;

[0025] Figure 8 This is a schematic diagram of the installation structure of the trowel assembly and the frame beam of the automatic trowel machine;

[0026] Figure 9 and Figure 10 This is a schematic diagram of the screed machine frame beam structure;

[0027] Figure 11 This is a diagram showing the usage state of this utility model.

[0028] In the diagram: 1. Frame beam; 11. Frame upright; 2. Walking drive device; 21. Drive motor; 22. Drive sprocket; 23. Chain; 24. Reducer; 25. Drive wheel; 26. Transmission belt or transmission chain; 3. Walking wheel set; 41. Control box; 42. Electrical box; 5. Floating smoothing assembly; 51. Smoothing machine frame beam; 510. Linear guide rail assembly; 52. Lateral slide screw; 521. Drive motor; 53. Lateral slide block; 54. Smoothing machine head; 541. Horizontal carriage seat; 542. Lifting mechanism; 54 21. Lifting base; 5422. Lifting drive cylinder; 5423. Vertical slide seat; 5424. Vertical linear guide rail assembly; 543. Smoothing motor; 544. Grinding disc; 55. Grinding disc swing mechanism; 551. Left swing frame; 552. Right swing frame; 553. Active swing arm; 5531. Active swing rod; 554. Driven swing arm; 555. Hinge joint; 5551. T-joint; 5552. U-joint; 556. Left swing drive cylinder; 557. Right swing drive cylinder; 56. Lateral drag chain; 6. Precast mold frame. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0030] Please see Figures 1 to 4 An automatic trowel assembly includes a horizontal carriage base 541 connected to a transverse slider 53; a lifting mechanism 542 connected to the upper end of the horizontal carriage base 541, the lifting mechanism 542 including a lifting base 5421 fixedly connected to the upper end of the horizontal carriage base 541, and a lifting drive cylinder 5422 fixedly installed on the upper surface of the lifting base 5421; a vertical carriage base 5423 connected to the piston rod of the lifting drive cylinder 5422; a vertical linear guide rail assembly 5424 installed between the vertical carriage base 5423 and the horizontal carriage base 541; a trowel motor 543 vertically installed inside the vertical carriage base 5423; the output end of the trowel motor 543 is connected to a grinding disc 544, and the vertical carriage base 5423 is raised and lowered by the lifting drive cylinder 5422, thereby adjusting the height of the grinding disc 544 to meet the troweling operation requirements at different heights.

[0031] Working principle: In embodiment 1, the drive motor 21 drives the drive sprocket 22 to rotate, and the drive sprocket 22 meshes with the chain 23, thereby driving the trowel to move along the precast formwork of the wind power tower. At the same time, the floating trowel assembly 5 can be raised and lowered according to the change in the height of the concrete segment surface. The transverse lead screw 52 in the floating trowel assembly 5 drives the transverse slider 53 to move the trowel head assembly 54 horizontally, and the lifting mechanism 542 adjusts the height of the grinding disc 544 to realize the troweling operation on the surface of the concrete segment.

[0032] Technical effect: This embodiment has a simple structure. The smoothing machine is driven by the meshing of the sprocket and the chain. The floating smoothing assembly can adapt to the smoothing needs of concrete pipe segments of different heights, ensuring the basic function of smoothing operation is realized.

[0033] To further improve the adaptability of the troweling machine to concrete segments with different curvatures,

[0034] Please see Figures 7 to 10 It also includes a grinding disc swing mechanism 55, which is hinged in the vertical slide seat 5423, and a smoothing motor 543 is mounted on the grinding disc swing mechanism 55. The grinding disc oscillation mechanism 55 includes a left swing arm 551 and a right swing arm 552 fixedly mounted on a vertical carriage seat 5423 in the vertical direction, a smoothing motor fixedly connected to it, and an active swing arm 553 and a driven swing arm 554 hinged to a support shaft within the vertical carriage seat 5423. The active swing arm 553 extends vertically upward to the upper ends of the left swing arm 551 and the right swing arm 552. An active swing rod 5531 is provided vertically at the upper end of the active swing arm 553, and the active swing rod 5531 is inserted into an oblong hinge hole of the hinge joint 555. The hinge joint 555 includes a T-shaped joint 5551 and a U-shaped joint 5552. The other end of the T-shaped joint 5551 is connected to a left swing drive cylinder 556, which is fixedly mounted on the left swing arm 551. The other end of the U-shaped joint 5552 is connected to a right swing drive cylinder 557, which is fixedly mounted on the right swing arm 552. Driven by the left swing drive cylinder 556 and the right swing drive cylinder 557, the active swing arm 553 and the driven swing arm 554 swing, which in turn drives the smoothing motor 543 and the grinding disc 544 to swing, so as to adapt to the smoothing operation of concrete pipe segments with different curvatures.

[0035] Working principle: The left swing drive cylinder 556 and the right swing drive cylinder 557 drive the active swing arm 553 and the driven swing arm 554 to swing, which in turn drives the smoothing motor 543 and the grinding disc 544 to swing. This allows the grinding disc 544 to better adapt to the surface of concrete segments with different curvatures, thereby achieving more precise smoothing operations. The addition of the grinding disc swing mechanism greatly improves the smoothing machine's adaptability to concrete segment surfaces with different curvatures, making the smoothing operation more precise and efficient, and improving the smoothing quality.

[0036] In a further preferred embodiment, guide rods 57 are provided on both sides of the lifting drive cylinder. The lower end of the guide rod is connected to the horizontal slide seat 541, and the upper end is slidably installed in the guide hole on the lifting base to ensure the stability of the up and down movement.

[0037] The above-mentioned trowel assembly is used in the assembly of an automatic troweling machine for the surface of precast concrete segments of wind power generation towers. Please refer to [link / reference]. Figures 1 to 11The automatic troweling machine mainly consists of a frame beam 1, a walking drive device 2, a walking wheel set 3, a floating troweling assembly 5, and key functional units such as a control box and an electrical box. These mechanical components work together to complete the troweling task on the surface of concrete pipe segments. Among them, the frame beam 1 provides a stable support structure for the entire equipment; the walking drive device 2 works in conjunction with the walking wheel set 3 to enable the equipment to move flexibly on the precast mold 6; and the floating troweling assembly 5 acts directly on the surface of the pipe segments to achieve the troweling operation.

[0038] To ensure the stable and reliable operation of the automatic trowel and to meet the requirements of clear and complete technical specifications, this utility model also includes a control box 41 and an electrical box 42. The control box is responsible for command control and operational monitoring of the automatic trowel's various actions, achieving real-time control of the equipment's operating status through precise signal transmission and processing. The electrical box provides power support and electrical protection for the automatic trowel's various electrical components, and contains control valves and other control elements to ensure safe and stable operation of the equipment under various working conditions. However, the specific configuration of the control box and electrical box is not the focus of this utility model's innovation; they will be rationally configured based on the professional knowledge and practical experience of those skilled in the field of electrical technology.

[0039] Please see Figure 11 The frame beam 1 spans across the precast formwork 6 of the wind turbine tower, providing a supporting foundation for the entire grouting machine. The travel drive device 2 is installed at both ends of the frame beam 1 to drive the grouting machine along the precast formwork 6 of the wind turbine tower. In this embodiment, the travel drive device 2 includes a drive motor 21, which is mounted on the frame upright plate 11; a drive sprocket 22 is installed at the output end of the drive motor 21; and a chain 23 is laid on the arc-shaped outer side of the precast formwork of the wind turbine tower. The drive sprocket 22 meshes with the chain 23, and the drive motor 21 drives the drive sprocket 22 to rotate, thereby using the meshing relationship between the drive sprocket 22 and the chain 23 to drive the grouting machine to move along the formwork.

[0040] The floating smoothing assembly 5 is mounted vertically on the frame uprights 11 of the frame beam 1 at both ends. It includes a smoothing machine frame beam 51, which is parallel to the length of the frame beam 1. Contouring support wheels 32 are fixedly mounted at both ends of the smoothing machine frame beam 51 to abut against the outer circumferential walls of the contouring rings at both ends of the precast formwork of the wind turbine tower, providing radial positioning and ensuring the accuracy of the smoothing operation. A linear guide assembly 510, preferably a non-powered linear guide assembly, allows the smoothing machine frame beam 51 to slide freely vertically relative to the frame uprights, achieving overall lifting and floating to adapt to concrete segment surfaces of different heights. A transverse screw 52 is mounted parallel to the smoothing machine frame beam 51, with one end connected to a drive motor 521, providing drive for the horizontal movement of the smoothing head assembly 54 along the length of the smoothing machine frame beam 51. The transverse slider 53 is mounted on the transverse lead screw 52 and is used to move horizontally along the trowel beam 51 under the drive of the transverse lead screw 52. The trowel head assembly 54 is connected to the transverse slider 53 and is used to smooth the surface of the concrete pipe segment. The trowel head assembly 54 is connected to the transverse drag chain 56, which is mainly used for the orderly storage and guidance of various pipelines and lines.

[0041] To ensure the stability of the lateral movement, a horizontal linear guide rail assembly 57 is also provided.

[0042] This trowel assembly, through a series of ingenious structural designs and innovations, endows the automatic troweling machine for the surface of precast concrete segments for wind turbine towers with high adaptability and precise operating capabilities. It can not only adapt to concrete segment surfaces of varying heights and curvatures, but also ensure stability and reliability during operation, greatly improving the quality and efficiency of troweling operations, reducing manual labor intensity, and providing strong equipment support for the production of precast concrete segments for wind turbine towers.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A trowel head assembly for an automatic troweling machine, characterized in that: Includes a horizontal carriage base and a connecting transverse slider; The lifting mechanism is connected to the upper end of the horizontal carriage base, including a lifting platform base, which is fixedly connected to the upper end of the horizontal carriage base, and a lifting drive cylinder, which is fixedly installed on the upper surface of the lifting platform base. Vertical carriage base, connected to the piston rod of the lifting drive cylinder; A vertical linear guide assembly is installed between a vertical carriage base and a horizontal carriage base; The smoothing motor is vertically mounted inside the vertical carriage base; the output end of the smoothing motor is connected to the grinding disc.

2. The trowel head assembly for an automatic troweling machine according to claim 1, characterized in that: It also includes a grinding disc swing mechanism, which is hinged in the vertical carriage seat, and the smoothing motor is mounted on the grinding disc swing mechanism.

3. The trowel head assembly for an automatic troweling machine according to claim 2, characterized in that: The grinding disc oscillation mechanism includes a left and right swing frame fixedly mounted on a vertical carriage seat, an active swing arm and a driven swing arm, and a smoothing motor fixedly connected to it. The active and driven swing arms are hinged in the vertical carriage seat through a support shaft. The active swing arm extends vertically upward to the upper end of the left and right swing frames. An active swing rod is provided at the upper end of the active swing arm in the vertical direction. The active swing rod is inserted into the elongated hinge hole of the hinge joint.

4. The trowel head assembly for an automatic troweling machine according to claim 3, characterized in that: The hinged joint includes a T-shaped joint and a U-shaped joint. The other end of the T-shaped joint is connected to the left swing drive cylinder, which is fixedly installed on the left swing frame. The other end of the U-shaped joint is connected to the right swing drive cylinder, which is fixedly installed on the right swing frame.

5. The trowel head assembly for an automatic troweling machine according to claim 3, characterized in that: Guide rods are provided on both sides of the lifting drive cylinder. The lower end of the guide rod is connected to the horizontal slide seat, and the upper end slides through the guide hole on the lifting machine base.

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