Floor grinding machine with toothed belt transmission type grinding head and double-head floor grinding equipment

Abstract

The utility model discloses a tooth type belt drive type grinder head for floor machine and double-head floor grinding equipment, including frame, driving motor, drive shaft, driving wheel, driven wheel, bearing seat group, main drive tooth type belt, triangular disc, big mill disc, grinding transmission tooth type belt and dust cover, its advantage is remarkable: adopt tooth type belt drive, reduce manufacturing and assembly accuracy requirement, be convenient for production maintenance, reduce cost, two-stage tooth type belt drive design, rely on elasticity and accurate meshing, buffer and absorb impact vibration, reduce noise, dust cover overall enclose, block grinding dust, protect transmission part, prolong equipment life, reduce maintenance cost, tooth type belt flexible and elastic, enhance the impact resistance, reduce equipment damage, and need not complex gear box and strengthen support structure, simplify overall structure, reduce equipment weight, improve mobility, reduce energy consumption, improve work economy, obvious advantage in market competition.

Description

Technical Field

[0001] This utility model belongs to the field of flooring machine technology, and in particular relates to a toothed belt driven grinding head for flooring machines and a double-head flooring grinding equipment. Background Technology

[0002] In the field of large-scale floor grinding equipment, traditional grinding heads generally use gear transmission systems to transmit power. This transmission method has the following significant drawbacks: The manufacturing and installation precision requirements are stringent: gear meshing transmissions require strict control of tooth profile accuracy, center distance, and parallelism (usually tolerance ≤ 0.05mm), resulting in high machining and assembly costs; Complex sealing structure: The gearbox must be equipped with multiple oil seals to prevent lubricating grease leakage. After long-term operation, the seals will age and easily cause oil leakage, polluting the working environment. Poor impact resistance: Gear meshing is a rigid transmission. When the ground is uneven and the grinding disc is momentarily overloaded, it is easy to cause tooth breakage or shaft deformation failure. High maintenance costs: The gearbox requires regular oil changes, and the gears must be replaced in pairs after they wear out, which significantly increases maintenance time and spare parts costs; Heavy structure: In order to withstand the high torque of gear transmission, the housing and support structure need to be reinforced, which increases the weight of the whole machine by more than 30% and affects the mobility of the equipment.

[0003] Therefore, there is an urgent need for a transmission solution that is structurally simple, highly impact-resistant, and easy to maintain, in order to overcome the current technological bottlenecks. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a toothed belt driven grinding head for floor grinding machines and a dual-head floor grinding equipment.

[0005] This utility model is implemented as follows: a toothed belt driven grinding head for flooring machines includes: a frame; a drive motor mounted on the upper side of the frame top plate; a drive shaft connected to the output shaft of the drive motor via a coupling; a drive wheel fixed on the drive shaft; at least three driven wheels, each driven wheel mounted on the frame bottom plate via a driven shaft; a bearing housing assembly including at least four bearing housings fixed on the lower side of the frame bottom plate and respectively supporting the drive shaft and each driven shaft; a main drive toothed belt surrounding and meshing with the drive wheel and at least one driven wheel; a triangular disk connected to the lower end of each driven shaft below the frame bottom plate; the triangular disk fixedly connected to a large grinding disc; a grinding drive toothed belt surrounding and meshing with each driven wheel, driving the triangular disk and the large grinding disc to rotate via the driven shaft; and a dust cover mounted on the frame top plate, located outside the large grinding disc and covering the periphery of the large grinding disc.

[0006] A further preferred embodiment includes a toothed belt tensioning mechanism, which comprises: a first tensioning wheel pressed against the outer surface of the main drive toothed belt; and a second tensioning wheel pressed against the outer surface of the grinding drive toothed belt.

[0007] More preferably, the first tensioning wheel and the second tensioning wheel are spring-type tensioning wheels.

[0008] More preferably, the driving wheel and one of the driven wheels are engaged around each other, and the driven wheel engages the other driven wheels via a ground transmission toothed belt.

[0009] The present invention also relates to a dual-head floor grinding equipment, characterized in that it comprises: two grinding heads as described above; which are shared and installed between the top plate and the bottom plate of the frame; wherein the drive motors of the two grinding heads are independently controlled.

[0010] A further preferred embodiment includes: large grinding discs of two adjacent grinding heads are arranged in an alternating manner.

[0011] The advantages and technical effects of this utility model are as follows: The utility model adopting the above technical solution has the following advantages: 1. Reduced manufacturing and assembly precision requirements: This utility model uses toothed belt drive to replace traditional gear drive. Toothed belt drive has relatively low requirements for the manufacturing and installation precision of parts. It does not require precise control of parameters such as tooth profile and center distance as gear drive, thus significantly reducing the manufacturing and assembly precision requirements, making the equipment easier to produce and maintain, effectively reducing production costs and improving production efficiency.

[0012] 2. Achieve smooth power transmission and reduce vibration and noise: The dual-stage toothed belt drive design (main drive toothed belt and ground drive toothed belt) effectively buffers and absorbs impacts and vibrations during power transmission thanks to the unique elasticity and precise tooth meshing of the toothed belt. During transmission, the toothed belt can undergo appropriate elastic deformation, reducing vibrations caused by sudden power changes or uneven ground. Simultaneously, the toothed belt drive operates relatively smoothly, reducing collisions and friction between parts, thus significantly reducing noise generation. This provides operators with a quieter and more comfortable working environment, improving work efficiency and protecting the physical and mental health of operators.

[0013] 3. Provides excellent dust protection: The dust cover's top-to-bottom, fully enclosed design effectively blocks the large amounts of dust generated during the grinding process. Dust is a particularly prominent issue in large-scale floor grinding operations. If this dust enters the transmission components, it accelerates wear and aging, affecting the normal operation and performance stability of the equipment. The installation of the dust cover effectively protects the transmission components from grinding dust contamination, reducing equipment malfunctions and damage caused by dust ingress, extending the equipment's service life, lowering maintenance costs and repair frequency, and improving the equipment's reliability and availability.

[0014] 4. Enhanced Impact Resistance: Gear meshing is a rigid transmission. When uneven ground causes instantaneous overload on the grinding disc, it can easily lead to tooth breakage or shaft deformation, causing serious damage to the equipment. Toothed belt drives, on the other hand, have a certain degree of flexibility and elasticity. When encountering instantaneous overload, the toothed belt can buffer and absorb the impact force through its own elastic deformation, preventing excessive stress on the transmission components. This greatly enhances the equipment's impact resistance, reduces damage caused by uneven ground, accidental collisions, and other factors, improves the equipment's reliability and stability, and ensures the continuity and efficiency of grinding operations.

[0015] 5. Simplified structure and reduced equipment weight: This utility model adopts a toothed belt drive, eliminating the need for a complex gearbox and reinforced support structure, greatly simplifying the overall structure of the equipment and reducing its weight. This not only improves the equipment's mobility, facilitating transportation, movement, and installation, but also reduces energy consumption, increases working efficiency and economic efficiency, giving the equipment a greater competitive advantage in the market. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 It means removing the top view of the drive motor; Figure 4 This is a schematic diagram of a dual-head grinding head structure; Figure 5 This is a schematic diagram of the internal structure without the dust cover; Figure 6 This is a schematic diagram of the large grinding disc distribution structure of a dual-head floor grinding equipment.

[0017] In the diagram: 1. Frame; 1-1. Frame top plate; 1-2. Frame bottom plate; 2. Drive motor; 3. Drive shaft; 4. Coupling; 5. Drive wheel; 6. Driven wheel; 61. Driven shaft; 7. Bearing housing assembly; 8. Main drive toothed belt; 9. Triangular disc; 10. Grinding drive toothed belt; 11. Large grinding disc; 12. Dust cover; 13. First tensioning wheel; 14. Second tensioning wheel. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1 to 3 A toothed belt driven grinding head for flooring machines includes: a frame 1; a drive motor 2 mounted on the upper side of the frame top plate 11 of the frame 1; a drive shaft 3 connected to the output shaft of the drive motor 2 via a coupling 4; a drive wheel 5 fixed to the drive shaft 3; at least three driven wheels 6, each driven wheel mounted on the frame bottom plate 1-2 via a driven shaft 61; a bearing housing assembly 7, including at least four bearing housings, fixed to the lower side of the frame bottom plate 1-2 and respectively supporting the drive shaft 3 and each driven shaft 61; a main drive toothed belt 8 surrounding and meshing the drive wheel 5 and at least one driven wheel 6; a triangular disk 9 connected to the lower end of each driven shaft 61 below the frame bottom plate 1-2; the triangular disk 9 is fixedly connected to a large grinding disc 11. The grinding transmission toothed belt 10 surrounds and meshes with each driven wheel 6, driving the triangular disk and the large grinding disk to rotate through the driven shaft; it also includes a dust cover 12, which is installed on the top plate 11 of the frame, located outside the large grinding disk 11, and covers the periphery of the large grinding disk 11.

[0020] Working principle of this utility model: Power Start-up and Initial Power Transmission: The toothed belt drive grinding head for flooring machines of this invention uses a drive motor 2 as its core power source, which is securely and precisely mounted on the top plate 1-1 of the frame 1. When the drive motor 2 is started, its output shaft begins to rotate at high speed and smoothly. With the help of the coupling 4, a key connecting component, the rotational power is precisely and smoothly transmitted to the drive shaft 3. The coupling 4 not only ensures that the output shaft of the drive motor 2 and the drive shaft 3 rotate in strict synchronization, but also effectively compensates for any minor errors that may exist during their installation, providing a reliable guarantee for the initial stage of power transmission.

[0021] A single-stage toothed belt drive achieves precise power distribution: a drive pulley 5 is securely fixed to the drive shaft 3, and a main drive toothed belt 8 cleverly wraps around and tightly meshes with the drive pulley 5 and at least one driven pulley 6. Preferably, in this embodiment, one driven pulley meshes with the drive pulley 5. The main drive toothed belt 8, with its unique tooth structure, precisely meshes with the tooth grooves on the drive pulley 5 and the driven pulley 6. When the drive shaft 3 rotates continuously under the drive of the drive motor 2, the drive pulley 5 also rotates at high speed. At this time, the strong friction between the main drive toothed belt 8 and the driven pulley 6, as well as the precise tooth meshing, causes the driven pulley 6 to begin rotating stably, thus completing the first-stage power transmission from the drive shaft 3 to the driven pulley 6, achieving precise power distribution, and laying a solid foundation for subsequent complex and orderly power transmission and grinding operations.

[0022] The two-stage toothed belt drive ensures continuous and stable power transmission: each driven pulley 6 is stably mounted on the frame base plate 12 via a driven shaft 61, while the grinding transmission toothed belt 10 surrounds and tightly meshes with each driven pulley 6. When the driven pulleys 6 begin to rotate under the drive of the main transmission toothed belt 8, they transmit power sequentially and smoothly to the other driven pulleys 6 via the grinding transmission toothed belt 10, forming a highly efficient and reliable two-stage toothed belt drive system. This two-stage toothed belt drive design has unique advantages. The elasticity of the toothed belt itself and the precise tooth meshing can effectively buffer and absorb the impact and vibration caused by uneven ground, sudden load changes, and other factors during power transmission, enabling power to be transmitted more continuously, smoothly, and evenly to each driven shaft 61, providing a strong guarantee for the stable and high-speed rotation of the grinding disc.

[0023] The grinding disc performs efficient grinding operations: Below the frame base plate 12, each driven shaft 61 is securely connected to a triangular disk 9 at its lower end, and the triangular disk 9 is tightly fixed to the large grinding disc 11. As the driven shaft 61 rotates continuously and stably under the drive of the two-stage toothed belt drive, the triangular disk 9 also rotates synchronously and at high speed, thereby driving the large grinding disc 11 to rotate at extremely high speed. During the rotation, the large grinding disc 11 makes full contact with the floor surface, and through strong friction and precise cutting action, it performs efficient and fine grinding of the floor, so that the floor surface quickly achieves a flat, smooth, and high-quality effect.

[0024] Dust protection ensures long-term stable operation of the equipment: To comprehensively protect the transmission components from the erosion and damage of grinding dust, this invention features a meticulously designed dust cover 12. It is cleverly installed on the top plate 1-1 of the frame, located on the outside of the large grinding disc 11, and comprehensively covers the outer perimeter of the large grinding disc 11 from top to bottom without any blind spots. During the grinding process, a large amount of dust is inevitably generated. If this dust enters the transmission components, it will accelerate the wear and corrosion of the parts, seriously affecting the normal operation and service life of the equipment. The dust cover 12 acts as a robust protective barrier, effectively blocking the entry of dust, providing a relatively clean and safe working environment for the transmission components, greatly extending the service life of the equipment, and significantly reducing maintenance costs and downtime.

[0025] A further preferred embodiment includes a toothed belt tensioning mechanism, comprising: a first tensioning wheel 13, pressed against the outer surface of the main drive toothed belt 8; and a second tensioning wheel 14, pressed against the outer surface of the ground drive toothed belt 10. Tensioning wheels are respectively provided on the outer surfaces of the main drive toothed belt 8 and the ground drive toothed belt 10, allowing the tension of the toothed belt to be changed by adjusting the positions of the tensioning wheels. This effectively prevents the toothed belt from slipping during transmission, ensuring stable power transmission and improving transmission efficiency. Simultaneously, appropriate tension can reduce wear between the toothed belt and the gear teeth, extending the service life of the toothed belt and transmission components, and reducing equipment maintenance costs.

[0026] Preferably, the first tensioning pulley 13 and the second tensioning pulley 14 are spring-type tensioning pulleys. Spring-type tensioning pulleys are existing technology, commercially available, and utilize the elasticity of a spring to automatically adjust the tension. When the toothed belt changes length due to wear or temperature variations, the spring's extension and contraction can adjust the position of the tensioning pulley in real time, ensuring the toothed belt always maintains a suitable tension. This adaptive adjustment function enhances the stability of the equipment and reduces the frequency of manual adjustments.

[0027] A further preferred embodiment involves a surrounding engagement of the driving pulley 5 and one of the driven pulleys 6, which engages with the other driven pulleys via a ground transmission toothed belt 10. This transmission layout optimizes the power transmission path, allowing power to be more efficiently distributed from the driving pulley 5 to each of the driven pulleys 6. It reduces energy loss during power transmission and improves transmission efficiency. Simultaneously, this structure makes the transmission system more compact, saving equipment space and facilitating miniaturization and lightweight design of the equipment.

[0028] Please see Figures 4 to 6This utility model also discloses a dual-head floor grinding device, characterized by comprising: two grinding heads as described above; shared and installed between the top and bottom plates of a frame 1; wherein the drive motors 2 of the two grinding heads are independently controlled. The dual-head design allows for simultaneous grinding of a larger area of ​​flooring, significantly improving work efficiency. The independent control of the two drive motors 2 allows for individual adjustment of speed and grinding intensity according to the grinding needs of different areas, achieving personalized grinding operations. The shared frame 1 reduces the number of equipment parts, lowers manufacturing costs, and also improves the overall stability of the equipment.

[0029] In a further preferred embodiment, the large grinding discs 11 of two adjacent grinding heads are staggered. This staggered arrangement allows for wider coverage during grinding, reducing blind spots and resulting in a more uniform and smooth floor surface. It avoids repeated or missed grinding caused by improper disc arrangement, thus improving grinding quality. Simultaneously, this layout makes full use of equipment space, enhancing grinding performance without compromising equipment mobility.

[0030] 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 toothed belt-driven grinding head for flooring machines, characterized in that, include: Framework (1); The drive motor (2) is installed on the upper side of the frame top plate (1-1) of the frame (1); The drive shaft (3) is connected to the output shaft of the drive motor (2) via a coupling (4); The drive wheel (5) is fixed on the drive shaft (3); At least three driven wheels (6) are mounted on the frame base plate (1-2) via driven shafts (61); The bearing housing assembly (7) includes at least four bearing housings, which are fixed to the underside of the frame base plate (1-2) and support the drive shaft (3) and each driven shaft (61) respectively. The main drive toothed belt (8) surrounds the meshing drive pulley (5) and at least one driven pulley (6); A triangular disk (9) is connected to the lower end of each driven shaft (61) below the frame base plate (1-2); the triangular disk (9) is fixedly connected to the large grinding disc (11). The grinding transmission toothed belt (10) surrounds and meshes with each driven wheel (6), driving the triangular disk and the large grinding disk to rotate through the driven shaft; It also includes a dust cover (12), which is installed on the top plate (1-1) of the frame, located outside the large grinding disc (11), and covers the periphery of the large grinding disc (11).

2. The grinding head according to claim 1, characterized in that: It also includes a toothed belt tensioning mechanism, which includes: a first tensioning wheel (13) pressed against the outer surface of the main drive toothed belt (8); The second tensioning wheel (14) is pressed against the outer surface of the grinding transmission toothed belt (10).

3. The grinding head according to claim 2, characterized in that: The first tensioner (13) and the second tensioner (14) are spring-loaded tensioners.

4. The grinding head according to claim 2, characterized in that: The driving wheel (5) is engaged with one of the driven wheels (6), which engages with the other driven wheels via a grinding drive toothed belt (10).

5. A dual-head floor grinding equipment, characterized in that... include: Two grinding heads as described in any one of claims 1-3; It is installed between the top plate and the bottom plate of the frame (1); The drive motors (2) of the two grinding heads are independently controlled.

6. The dual-head floor grinding equipment according to claim 5, characterized in that: include: The large grinding discs (11) of two adjacent grinding heads are staggered.

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