A mobile center of gravity adjusting device for a floor grinder

Abstract

This utility model relates to a mobile center of gravity adjustment device for a floor grinder, comprising a guide rail assembly symmetrically arranged along the rear crossbeam of the grinder frame, and a mobile counterweight mechanism slidably mounted on the guide rail assembly. The mobile counterweight mechanism includes a counterweight frame with a rectangular frame structure, and the counterweight frame has multiple detachable counterweight blocks along its length. Moving rollers are provided at the four corners of the counterweight frame. The guide rail assembly includes a pair of parallel C-shaped rails, and the moving rollers are slidably embedded in the guide grooves of the C-shaped rails. A drive device for horizontally moving the counterweight frame is installed on the counterweight frame on the side of the rear crossbeam of the grinder frame. In summary, this utility model's mobile center of gravity adjustment device for a floor grinder, through reasonable design and structural layout, achieves flexible and precise counterweight adjustment, smooth and stable movement of the counterweight frame, precise and efficient drive, and overall stable and reliable operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of floor grinding machines, and in particular relates to a movable center of gravity adjustment device for floor grinding machines. Background Technology

[0002] In the fields of building decoration and floor maintenance, floor grinders, as efficient and precise floor treatment equipment, are widely used in grinding, polishing, and refinishing various types of floors. Floor grinders use their grinding discs to finely process the floor, improving its smoothness, gloss, and removing surface imperfections. However, in actual operation, the grinder often needs to be flexibly adjusted according to different grinding needs, floor materials, and working conditions to ensure both grinding effectiveness and work efficiency.

[0003] Especially when dealing with large areas or complex terrain, the weight distribution and stability of the grinder become key factors affecting grinding quality and operational safety. Traditional grinders are mostly designed with a fixed counterweight structure, meaning the position and number of counterweights are determined at the factory, making it difficult to quickly adjust according to actual site conditions. While this design ensures the structural stability of the grinder to some extent, it is not flexible enough when facing different grinding needs or ground conditions. It often requires manually moving the counterweights or adjusting the grinder's position to change the weight distribution, which is not only cumbersome but also inefficient, increasing operating costs and time.

[0004] Furthermore, a fixed counterweight structure can lead to uneven weight distribution in the grinder under certain operating conditions, thus affecting the grinding effect and the overall stability of the equipment. For example, when the grinder is working on edges or corners, the counterweight may not effectively cover these areas, resulting in insufficient grinding force or equipment tilting, affecting the quality and safety of the work.

[0005] Therefore, this utility model proposes a movable center of gravity adjustment device for floor grinding machines, aiming to solve the above-mentioned problems in the prior art and provide strong support for the efficient and safe operation of grinding machines. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a movable center of gravity adjustment device for floor grinders that allows for flexible adjustment of the counterweight position and weight. This device should be able to quickly and accurately adjust the position of the counterweight according to the actual working needs of the grinder and the ground conditions, thereby optimizing the weight distribution of the grinder, improving grinding efficiency, enhancing equipment stability, and reducing operational difficulty and cost.

[0007] This utility model is implemented as follows: a movable center of gravity adjustment device for a floor grinder, characterized in that: it includes a guide rail assembly symmetrically arranged along the rear crossbeam of the grinder frame, and a movable counterweight mechanism slidably arranged on the guide rail assembly. The movable counterweight mechanism includes a counterweight frame with a rectangular frame structure, and the counterweight frame has multiple detachable counterweight blocks along its length. The four corners of the counterweight frame are provided with movable rollers. The guide rail assembly includes a pair of parallel C-shaped rails, and the movable rollers are slidably embedded in the guide grooves of the C-shaped rails. A drive device for driving the counterweight frame to move horizontally is installed on the counterweight frame on the side of the rear crossbeam of the grinder frame.

[0008] More preferably, the driving device includes a rack, which is mounted on a crossbar on the side of the counterweight. The two ends of the crossbar are connected to the counterweight frame through columns, and the other end of the rack is inserted into a guide seat. The guide seat is fixedly mounted on a fixed beam that is fixedly connected to the rear crossbeam of the grinding machine frame.

[0009] In a further preferred embodiment, guide posts are provided on both sides of the rack, one end of the guide post is connected to a crossbar, and the other end of the guide post is inserted into a guide sleeve. The guide sleeve is fixedly installed on a fixed beam. A drive gear that meshes with the rack is provided below the rack, and the drive gear is connected to a drive motor.

[0010] More preferably, the driving device is a hydraulic cylinder, one end of which is connected to the rear crossbeam of the grinding machine frame, and the piston rod of the hydraulic cylinder is connected to the counterweight frame.

[0011] More preferably, the counterweight frame includes a front axle crossbeam and a rear axle crossbeam, with two parallel counterweight support beams between the front axle crossbeam and the rear axle crossbeam, the counterweights being mounted on the counterweight support beams, and the rear axle crossbeam being provided with counterweight tightening bolts.

[0012] The advantages and technical effects of this utility model are as follows: This utility model, by adopting the above technical solution, has the following technical effects:

[0013] Flexible and precise counterweight adjustment: The counterweight frame has multiple detachable counterweight blocks along its length. Operators can quickly and flexibly increase or decrease the number of counterweight blocks according to the actual working conditions of the floor grinder, such as different floor materials and grinding depth requirements, to achieve precise adjustment of the weight of the counterweight frame, meet diverse grinding needs, and effectively improve the grinding effect.

[0014] Smooth and stable movement: The counterweight frame is equipped with four corner rollers that slide within the C-shaped guide grooves of the guide rail assembly. This design minimizes friction and ensures smooth movement of the counterweight frame during operation, reducing the impact of shaking or jamming on the overall operation of the grinding machine and guaranteeing the stability and reliability of the equipment.

[0015] Precise and efficient drive: The drive device employs a rack and pinion mechanism with a drive gear. The drive gear is connected to a high-performance servo motor or stepper motor, enabling precise control of the drive gear's speed and direction, thereby driving the rack to achieve precise linear motion. This drive method offers fast response and allows for precise adjustment of the counterweight frame's movement distance and speed, significantly improving the equipment's operational flexibility and work efficiency, and meeting diverse needs for counterweight position adjustment under different working conditions.

[0016] Stable and reliable operation: To improve the smoothness and precision of the drive unit's operation, guide posts and guide sleeves are installed on both sides of the rack. The guide posts reciprocate within the guide sleeves, enhancing the rack's resistance to lateral forces, effectively preventing rack misalignment, ensuring the straightness and stability of the rack's movement, laying a solid foundation for the subsequent transmission process, and guaranteeing the reliability and stability of the drive unit during operation.

[0017] Sturdy and durable structure: The counterweight frame adopts a rectangular frame structure, including a front axle crossbeam, a rear axle crossbeam, and two parallel counterweight support beams. The overall structure is stable and can withstand the weight of the counterweight and various forces generated during movement, thus extending the service life of the equipment.

[0018] In summary, the mobile center of gravity adjustment device for floor grinding machines of this utility model, through reasonable design and structural layout, achieves flexible and precise counterweight adjustment, smooth and stable movement of the counterweight frame, precise and efficient drive, and overall stable and reliable operation. At the same time, the structure is sturdy and durable, effectively improving the operational flexibility, work efficiency and grinding quality of the floor grinding machine, and reducing equipment maintenance costs. It has significant technical advantages and application value. Attached Figure Description

[0019] Figure 1 and Figure 2 This is a three-dimensional structural diagram of Embodiment 1 of this utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0022] In the diagram: 1. Guide rail assembly; 11. C-shaped rail; 12. Guide groove; 2. Movable counterweight mechanism; 21. Counterweight frame; 210. Front axle crossbeam; 211. Rear axle crossbeam; 212. Counterweight support beam; 213. Counterweight tightening bolt; 22. Removable counterweight; 23. Movable roller; 3. Drive unit; 31. Rack; 32. Crossbar; 33. Column; 34. Guide seat; 35. Fixed beam; 36. Drive gear; 37. Guide column; 38. Guide sleeve; 4. Drive motor; 5. Hydraulic cylinder; 6. Rear crossbeam of grinding machine frame. Detailed Implementation

[0023] 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.

[0024] Example 1, please refer to Figures 1 to 3 A movable center of gravity adjustment device for a floor grinder includes a guide rail assembly 1 symmetrically arranged along the rear crossbeam of the grinder frame and a movable counterweight mechanism 2 slidably mounted on the guide rail assembly. The movable counterweight mechanism includes a counterweight frame 21 with a rectangular frame structure. The counterweight frame has multiple detachable counterweight blocks 22 along its length. The four corners of the counterweight frame are provided with movable rollers 23. The guide rail assembly 1 includes a pair of parallel C-shaped rails 11. The movable rollers are slidably embedded in the guide grooves 12 of the C-shaped rails. A drive device 3 for driving the counterweight frame to move horizontally is installed on the counterweight frame on the side of the rear crossbeam 4 of the grinder frame.

[0025] More preferably, the driving device includes a rack, which is mounted on a crossbar on the side of the counterweight. The two ends of the crossbar are connected to the counterweight frame through columns. The other end of the rack is inserted into a guide seat. The guide seat has a guide groove that cooperates with the rack. The guide seat is fixedly mounted on a fixed beam that is fixedly connected to the rear crossbeam of the grinding machine frame.

[0026] The drive unit 3 includes a rack 31 arranged along the moving direction of the counterweight frame. On the side where the counterweight is located, the rack is securely mounted on a crossbar 32. Both ends of the crossbar are reliably connected to the counterweight frame via columns 33 to form a stable support structure. The end of the rack furthest from the counterweight is precisely inserted into a guide seat 34, which accurately guides the movement of the rack, ensuring its stability and accuracy during operation. The guide seat is firmly fixed to a fixed beam 35 that is tightly connected to the rear crossbeam 6 of the grinding machine frame, providing a stable mounting foundation for the entire drive unit and ensuring its reliability and stability during operation. Below the rack, a drive gear 36 is provided that meshes tightly with the rack.

[0027] The drive gear is tightly connected to the drive motor 4 via a key connection or other reliable connection method. The drive motor is a high-performance servo motor or stepper motor, possessing precise speed and position control capabilities. The motor can precisely control the speed and direction of the drive gear according to a preset program or externally input commands, thereby driving the rack to achieve precise linear motion. This drive method not only has a fast response speed but also enables precise adjustment of the counterweight frame's movement distance and speed, meeting the diverse needs of the floor grinder for adjusting the counterweight position under different working conditions, greatly improving the equipment's operational flexibility and work efficiency.

[0028] Furthermore, to further enhance the smoothness and precision of the drive unit's operation, guide posts 37 are carefully positioned on both sides of the rack. These two guide posts are symmetrically distributed, with one end securely connected to the crossbar via a high-strength connection structure, and the other end precisely inserted into the guide sleeve 38. The guide sleeve is made of wear-resistant and high-precision material, and its inner wall is finely machined to ensure a perfect fit with the guide post, guaranteeing smooth sliding of the guide post while effectively limiting its radial wobble. The guide sleeve is reliably fixed to the fixed beam 35, providing a solid support foundation for the entire guiding system.

[0029] When the drive unit is running, the guide column reciprocates along a predetermined straight line within the guide sleeve. This design greatly enhances the rack's resistance to lateral forces during movement, effectively preventing rack offset caused by external interference or its own motion inertia. This ensures the straightness and stability of the rack's movement, laying a solid foundation for the subsequent transmission process.

[0030] In a further preferred embodiment, the counterweight frame 21 includes a front axle crossbeam 210 and a rear axle crossbeam 211. Two parallel counterweight support beams 212 are provided between the front and rear axle crossbeams. The counterweights are mounted on the counterweight support beams. Counterweight tightening bolts 213 are provided on the rear axle crossbeam to prevent the counterweights from shifting. This technical solution has the following significant technical effects:

[0031] I. Improved structural stability:

[0032] The frame structure enhances overall strength: The counterweight frame structure consists of a front axle crossbeam, a rear axle crossbeam, and two parallel counterweight support beams. All components are interconnected to form a stable whole. This structural form effectively disperses and withstands various external forces generated during the grinding machine's operation, such as vibration, impact, and the weight of the counterweights themselves. This significantly improves the structural stability of the counterweight frame, reduces the risk of structural deformation or damage caused by external forces, and extends the service life of the counterweight frame.

[0033] Parallel support beams ensure uniform stress distribution: Two parallel counterweight support beams provide a stable support foundation for the counterweights. The counterweights are evenly mounted on the support beams, allowing the weight of the counterweights to be evenly distributed across the entire counterweight frame, avoiding structural damage caused by excessive local stress and further enhancing the stability of the counterweight frame.

[0034] II. The counterweight can be adjusted flexibly and conveniently.

[0035] Modular counterweights are easy to add or remove: The counterweights are installed on the counterweight support beam using a through-mount method, making it very simple to add or remove them. Operators can quickly and flexibly adjust the number of counterweights according to the actual working needs of the grinder, such as different grinding materials, grinding depths, and ground conditions, thereby achieving precise control of the weight of the counterweight frame to meet the grinding requirements under various working conditions.

[0036] Adjustable position to adapt to diverse working conditions: The counterweights can be adjusted not only in number but also in position as needed. By changing the distribution of the counterweights on the counterweight support beam, the center of gravity of the counterweight frame can be adjusted, allowing the grinder to maintain good balance under different terrains and working conditions, thus improving the grinder's adaptability and operating efficiency.

[0037] Example 2, please refer to Figure 4 The driving device is a hydraulic cylinder 5, one end of which is connected to the rear crossbeam of the grinding machine frame, and the piston rod of the hydraulic cylinder is connected to the counterweight frame. Using a hydraulic cylinder to provide power for adjusting the counterweight frame is highly effective. The hydraulic cylinder can output a large thrust, easily driving the counterweight frame to move and overcoming various resistances, making it suitable for large grinding machines. Its smooth movement reduces impact vibration on the grinding machine, ensuring stable operation. Furthermore, the hydraulic system can precisely control the extension and retraction distance and speed of the piston rod, achieving precise positioning and flexible speed adjustment of the counterweight frame.

[0038] 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, such as the use of a lead screw and nut pair to achieve linear motion and drive the counterweight mechanism to linear motion, should be included within the protection scope of the present utility model.

Claims

1. A movable center of gravity adjustment device for a floor grinding machine, characterized in that: The device includes a guide rail assembly symmetrically arranged along the rear crossbeam of the grinding machine frame, and a movable counterweight mechanism slidably mounted on the guide rail assembly. The movable counterweight mechanism includes a counterweight frame with a rectangular frame structure, and the counterweight frame has multiple detachable counterweight blocks along its length. The four corners of the counterweight frame are provided with movable rollers. The guide rail assembly includes a pair of parallel C-shaped rails, and the movable rollers are slidably embedded in the guide grooves of the C-shaped rails. A drive device for driving the counterweight frame to move horizontally is installed on the counterweight frame on the side of the rear crossbeam of the grinding machine frame.

2. The movable center of gravity adjustment device for a floor grinding machine according to claim 1, characterized in that: The drive device includes a rack extending along the moving direction of the counterweight frame. The rack is mounted on a crossbar on the side of the counterweight block. Both ends of the crossbar are connected to the counterweight frame via columns. The other end of the rack is inserted into a guide seat. The guide seat is fixedly mounted on a fixed beam that is fixedly connected to the rear crossbeam of the grinding machine frame. A drive gear meshing with the rack is provided below the rack. The drive gear is connected to a drive motor.

3. The movable center of gravity adjustment device for a floor grinding machine according to claim 2, characterized in that: Guide posts are provided on both sides of the rack. One end of the guide post is connected to the crossbar, and the other end of the guide post is inserted into the guide sleeve. The guide sleeve is fixedly installed on the fixed beam.

4. The movable center of gravity adjustment device for a floor grinding machine according to claim 1, characterized in that: The driving device is a hydraulic cylinder. One end of the hydraulic cylinder is connected to the rear crossbeam of the grinding machine frame, and the piston rod of the hydraulic cylinder is connected to the counterweight frame.

5. The movable center of gravity adjustment device for a floor grinding machine according to claim 1, characterized in that: The counterweight frame includes a front axle crossbeam and a rear axle crossbeam, with two parallel counterweight support beams between them. The counterweights are mounted on the counterweight support beams. The rear axle crossbeam is equipped with counterweight tightening bolts.

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