A single-disc floor grinder

Abstract

The present invention discloses a single-disc floor grinder, comprising a motor, a handle and two running wheels arranged on a motor disk, a grinding cover is arranged above the disk body, a first grinding disk is connected to the bottom end surface of the disk body, a connecting shaft is arranged on the top end surface of the disk body, the grinder also comprises a weighting assembly, the weighting assembly comprises a fixed plate and a weighting disk, one end of the connecting shaft is connected to the top end surface of the disk body, and the other end is connected to the motor output shaft, a connecting assembly is arranged on the weighting assembly, the connecting assembly comprises a plurality of bolts and a plurality of nuts, one end of the bolts passes through the fixed plate, the weighting disk and the grinding cover in sequence, and then each is connected to one of the nuts to fasten the fixed plate, the weighting disk and the grinding cover. The purpose of the present invention is to provide a single-disc floor grinder, aiming to solve the technical problems in the prior art that the single-disc floor grinder has a small dead weight, low construction efficiency, large reaction force, and high technical and physical requirements for workers.

Description

Technical Field

[0001] The invention belongs to the technical field of floor grinders, and in particular relates to a single-disc floor grinder. Background Art

[0002] Floor grinders are mainly used for grinding concrete, stone, terrazzo and epoxy floors. They can effectively grind terrazzo, concrete surface, epoxy mortar layer and old epoxy floors. Single-disc floor grinders mainly include a motor disc, a motor installed on the motor disc, a handle, a running wheel, a disc body, a grinding disc and a grinding cover. The grinding disc is installed on the bottom end surface of the disc body. The motor output shaft is connected to the disc body and drives the disc body to grind the floor.

[0003] At present, single-disc floor grinders have low rotation speed and low construction efficiency. Generally, one person can only grind 20-30 square meters a day. In addition, the grinder has a small weight, and the reaction force of the ground on the grinder is obvious during work, which manifests as the grinder working against the person. The more you support it, the more it runs away, and it hits the east and hits the west. It not only has high technical requirements on the workers, but also high physical requirements on the workers. It is tiring to operate, and cannot maintain long-term continuous construction. Multiple people are required to take turns. Summary of the invention

[0004] The purpose of the present invention is to provide a single-disc floor grinder, aiming to solve the technical problems in the prior art that the single-disc floor grinder has small dead weight, low construction efficiency, large reaction force, and high technical and physical requirements for workers.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A single-disc floor grinder, comprising a motor arranged on a motor disc to drive the disc body to rotate, a handle and two travel wheels installed at the bottom of the handle, a grinding cover is arranged above the disc body, a first grinding disc is connected to the bottom end surface of the disc body, a connecting shaft is arranged on the top end surface of the disc body, the grinder also comprises a weighting assembly, the weighting assembly comprises a fixing plate connected to the bottom end surface of the motor disc and a weighting disc located directly below the fixing plate, and the weighting disc is located directly above the grinding cover;

[0007] One end of the connecting shaft is connected to the top surface of the disc body, and the other end thereof passes through the grinding cover, the weighted disc and the fixing plate and is connected to the output shaft of the motor. The connecting shaft, the grinding cover, the weighted disc, the fixing plate and the output shaft of the motor are on the same axis.

[0008] A connecting assembly is provided on the weighting assembly, which includes a plurality of bolts and a plurality of nuts. One end of each bolt passes through the fixing plate, the weighting disk and the grinding cover in sequence and is then connected to a nut to fasten the fixing plate, the weighting disk and the grinding cover.

[0009] Preferably, the fixing plate is a triangular structure, a block assembly is provided on the fixing plate, the block assembly includes three block units, the block units are evenly distributed along the axis of the fixing plate near the three corners of the fixing plate, the block unit includes a circular block and a connecting rod, one end of the connecting rod is fixedly connected to the bottom end surface of the circular block, and the other end is fixedly connected to the upper end surface of the fixing plate, and the circular block is fixed above the fixing plate through the connecting rod;

[0010] The motor disk is an annular disk body with a center hole formed at the axis center. The bottom end surface of the motor disk is provided with three annular grooves evenly distributed along the axis of the motor disk. A fastening block is provided at one end of the annular groove in the counterclockwise direction. The fastening block part is tightly attached to the notch of the annular groove, and the remaining part is installed on the bottom end surface of the motor disk. The fastening block is connected to the motor disk with screws, and each circular clamping block is adapted to slide with an annular groove.

[0011] Preferably, the grinder also includes a grinding mechanism, which includes an inner gear ring whose outer wall is fixed to the inner wall of the grinding cover, a gear meshing with the inner gear ring, a second grinding disk fixed to the bottom end surface of the gear, and a transmission assembly that transmits the power of the connecting shaft to the gear.

[0012] Preferably, the transmission assembly includes a bearing, a vertical rod and a cross rod; the outer ring of the bearing is fixedly connected to the hole of the gear, the inner ring of the bearing is fixedly connected to the vertical rod, one end of the cross rod is fixedly connected to the vertical rod, and the end of the cross rod away from the vertical rod is fixedly connected to the disk body.

[0013] Preferably, the number of the gears and the second grinding discs are both three, the gears are respectively connected to the inner gear ring and the gears are evenly distributed on the inner side of the gear ring along the axis of the disc body, the bottom end faces of the gears are each connected to a second grinding disc, the holes of the gears are each fixedly connected to the bearings, the inner rings of the bearings are each fixedly connected to the vertical rods, the vertical rods are each connected to one end of the cross rods, and the ends of the cross rods away from the vertical rods are each fixedly connected to the disc body.

[0014] Preferably, the grinding machine also includes a walking assembly, which includes a connecting plate, a sliding rod, a pulley and a fixed rod. One side of the connecting plate is fixedly connected to the top surface of the grinding cover. There are two fixed rods, and the outer walls of the fixed rods are respectively abutted against the walking wheels and one end of each is installed on the side of the connecting plate away from the grinding cover. The sliding rod is installed on the bottom end surface of the connecting plate, and the pulleys are connected to both ends of the sliding rod.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. The grinding machine of the present invention is an improvement made on the basis of the existing single-disc floor grinding machine, with low cost, practical structure and effective solution to the insufficient technical problems existing in the existing single-disc floor grinding machine.

[0017] 2. The grinder is provided with a weighted component, which is easy to install with the motor disk. The weight of the grinder installed with the weighted component is increased, so that the reaction force of the grinder is not obvious when working, and the walking is stable and will not run around. The worker's operating proficiency is low and the worker's physical strength is saved.

[0018] 3. The grinding mechanism and the first grinding disc cooperate to grind the floor, thereby improving the construction efficiency of the grinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the main structural view of the present invention;

[0020] Figure 2 yes Figure 1 Breakdown structure view;

[0021] Figure 3 yes Figure 2 Partial view of the bottom structure of the center plate body and gear ring;

[0022] Figure 4 This is the bottom structural view of the motor disk;

[0023] Figure 5 yes Figure 2 A magnified view of center A;

[0024] Figure 6 It is a structural view of a grinding machine in the prior art;

[0025] Figure 7 yes Figure 6 View of the bottom structure of the middle plate.

[0026] Figure markings: 1-motor disc, 2-disc body, 3-motor, 4-handle, 5-travel wheel, 6-grinding cover, 7-first grinding disc, 8-connecting shaft, 9-fixed plate, 10-weighted disc, 11-bolt, 12-nut, 13-circular block, 14-annular slide groove, 15-fastening block, 16-inner gear ring, 17-gear, 18-second grinding disc, 19-bearing, 20-vertical rod, 21-cross rod, 22-connecting plate, 23-slide rod, 24-pulley, 25-fixed rod. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and embodiments.

[0028] Embodiment 1,

[0029] Reference Figure 1-5A single-disc floor grinder comprises a motor 3 arranged on a motor disc 1 to drive a disc body 2 to rotate, a handle 4 and two walking wheels 5 installed at the bottom of the handle 4, a grinding cover 6 is arranged above the disc body 2, a first grinding disc 7 is connected to the bottom end surface of the disc body 2, and a connecting shaft 8 is arranged on the top end surface of the disc body 2. The grinder also comprises a weighting assembly, which comprises a fixing plate 9 connected to the bottom end surface of the motor disc 1 and a weighting disc 10 located directly below the fixing plate 9, and the weighting disc 10 is located directly above the grinding cover 6;

[0030] One end of the connecting shaft 8 is connected to the top surface of the disc body 2, and the other end thereof passes through the grinding cover 6, the weighted disc 10 and the fixing plate 9 and is connected to the output shaft of the motor 3. The connecting shaft 8, the grinding cover 6, the weighted disc 10, the fixing plate 9 and the output shaft of the motor 3 are on the same axis;

[0031] A connecting assembly is provided on the weighting assembly, which includes a plurality of bolts 11 and a plurality of nuts 12. One end of the bolts 11 passes through the fixing plate 9, the weighting disk 10 and the grinding cover 6 in sequence and is then connected to a nut 12 respectively to fasten the fixing plate 9, the weighting disk 10 and the grinding cover 6.

[0032] Prior art grinding machine reference Figure 6-7 It includes a motor 3 arranged on a motor disk 1 to drive a disk body 2 to rotate, a handle 4 and two running wheels 5 installed at the bottom of the handle 4, a grinding cover 6 is arranged above the disk body 2, and a first grinding disk 7 is connected to the bottom end surface of the disk body 2;

[0033] This embodiment is a further improvement of the grinding machine in the above-mentioned prior art. The structure of the grinding machine in this embodiment improved relative to the prior art grinding machine is described in detail as follows:

[0034] Weighted assembly structure: including a plurality of through holes facing each other from top to bottom on the fixing plate 9, the weighted disc 10 and the grinding cover 6, the number of through holes is the same as that of bolts 11 and nuts 12. During installation, one end of the bolt 11 passes through the fixing plate 9, the weighted disc 10 and the grinding cover 6 at the top in sequence, and the nut 12 is connected with one end of the bolt 11 from inside the grinding cover 6. The nut 12 and the bolt 11 cooperate to stack and fasten the fixing plate 9, the weighted disc 10 and the grinding cover 6;

[0035] After the grinder is equipped with a weighted plate assembly, the overall weight of the grinder is increased. The weight of the weighted plate can be adjusted according to actual conditions so that the grinder reaches an optimal state in which the reaction force has the least effect on the grinder when working. At the same time, the requirements for workers' operating proficiency and the labor intensity of workers are reduced. No additional workers are needed, and one worker can operate it.

[0036] Embodiment 2,

[0037] Reference Figure 1-5The difference between this embodiment and implementation 1 is that the fixing plate 9 is a triangular structure, and a block assembly is provided on the fixing plate 9. The block assembly includes three block units, and the block units are evenly distributed along the axis of the fixing plate 9 near the three corners of the fixing plate 9. The block unit includes a circular block 13 and a connecting rod. One end of the connecting rod is fixedly connected to the bottom end surface of the circular block 13, and the other end is fixedly connected to the upper end surface of the fixing plate 9. The circular block 13 is fixed above the fixing plate 9 through the connecting rod;

[0038] The motor disk 1 is an annular disk body 2 with a center hole formed at the axis. The bottom end surface of the motor disk 1 is provided with three annular grooves 14 evenly distributed along the axis of the motor disk 1. One end of the annular groove 14 in the counterclockwise direction is provided with a fastening block 15. Part of the fastening block 15 is tightly attached to the notch of the annular groove 14, and the remaining part is installed on the bottom end surface of the motor disk 1. The fastening block 15 is screwed to the motor disk 1, and the circular clamping blocks 13 are adapted to slide with each annular groove 14.

[0039] The connection principle between the weight component and the bottom end surface of the motor disk 1:

[0040] The circular clamping block 13 is rotated counterclockwise to the position of the fastening block 15 at the same time, and the fastening block 15 cooperates with the annular groove 14 to fasten the circular clamping block 13 in the annular groove 14. The fastening block 15 is screwed to the bottom end surface of the motor disk 1. The fastening block 15 is provided with a screw to fasten the fastening block 15 to the bottom end surface of the motor disk 1. When the screw is tightened, the fastening block 15 is fastened to the bottom end surface of the motor disk 1 and the circular clamping block 13 is clamped in the annular groove 14. At this time, the weighting component is connected to the motor disk 1. It is necessary to remove the weighting component from the motor When the bottom end surface of the disk 1 is removed, the circular block 13 is rotated clockwise to move it away from the fastening block 15, and then the weight assembly is removed. The weight assembly and the motor disk 1 in this embodiment are convenient to connect and very convenient to disassemble later. When disassembly is required, only the weight assembly needs to be rotated clockwise to remove the weight assembly from the annular slide groove 14. The weight assembly in this embodiment is directly installed on the bottom of the motor disk based on the existing grinder. Therefore, the structure of this embodiment is practical and easy to operate, while improving the work efficiency of workers.

[0041] Embodiment 3,

[0042] Reference Figure 1-5 The difference between this embodiment and the first embodiment is that the grinding machine further comprises a grinding mechanism, which comprises an inner gear ring 16 whose outer wall is fixedly connected to the inner wall of the grinding cover 6, a gear 17 meshingly connected to the inner gear ring 16, a second grinding disc 18 fixed to the bottom end surface of the gear 17, and a transmission assembly for transmitting the power of the connecting shaft 8 to the gear 17. The inner diameter of the inner gear ring 16 is larger than the outer diameter of the disc body 2 and the inner gear ring 16 is coaxial with the disc body 2;

[0043] The transmission assembly includes a bearing 19, a vertical rod 20 and a cross rod 21; the outer ring of the bearing 19 is fixedly connected to the hole of the gear 17, the inner ring of the bearing 19 is fixedly connected to the vertical rod 20, one end of the cross rod 21 is fixedly connected to the vertical rod 20, and the end of the cross rod 21 away from the vertical rod 20 is fixedly connected to the disk body 2.

[0044] There are three gears 17 and three second grinding discs 18. The gears 17 are respectively connected to the inner gear ring 16 and are evenly distributed on the inner side of the gear 17 ring along the axis of the disc body 2. The bottom end faces of the gears 17 are each connected to a second grinding disc 18. The holes of the gears 17 are fixedly connected to bearings 19, and the inner rings of the bearings 19 are fixedly connected to vertical rods 20. The vertical rods 20 are each connected to one end of a cross rod 21, and the ends of the cross rods 21 away from the vertical rods 20 are fixedly connected to the disc body 2.

[0045] Working principle of floor grinding by grinder:

[0046] The grinding machine of this embodiment has two parts for grinding the floor when working, one part is the first grinding disc 7 connected to the bottom end surface of the disc body 2, and the other part is the grinding mechanism;

[0047] Working principle of the first grinding disc 7; in this embodiment, the motor 3 is a reduction motor 3, and the motor 3 is started to work, which drives the connecting shaft 8 to rotate. The connecting shaft 8 is connected to the disc body 2. When the connecting shaft 8 rotates, it drives the disc body 2 to rotate. The bottom end surface of the disc body 2 is connected to the first grinding disc 7, so when the disc body 2 rotates, it drives the first grinding disc 7 at the bottom to rotate. When the first grinding disc 7 rotates, it grinds the floor. In this embodiment, the number of first grinding discs 7 is six, and they are evenly distributed along the axis of the disc body 2.

[0048] Working principle of the grinding mechanism: when the disc body 2 rotates, it drives the horizontal rod 21 and the vertical rod 20 to rotate. The vertical rod 20 is connected to the inner ring of the bearing 19 and drives the bearing 19 to rotate. The outer ring of the bearing 19 is fixedly connected with a gear 17. The gear 17 is meshed and connected with the inner gear ring 16. Therefore, when the bearing 19 rotates, it drives the gear 17 to rotate along the inner ring of the inner gear ring 16. At this time, while the gear 17 rotates around the outer periphery of the disc body 2, it also generates a self-rotation. In this embodiment, the outer diameter of the gear 17 is one-fifth of the outer diameter of the disc body 2. Here, the angular velocity of the gear 17 is faster than the angular velocity of the disc body 2. The bottom end face of the gear 17 is connected to the second grinding disc 18. When the gear 17 rotates, it drives the second grinding disc 18 to grind the floor.

[0049] Compared with the prior art in which only the first grinding disc 7 under the disc body 2 of the grinder grinds the floor, in this embodiment, the first grinding disc 7 and the second grinding disc 18 cooperate to grind the floor. Moreover, since a weighting component is provided in this embodiment, the output speed of the motor 3 can be relatively increased to improve the grinding efficiency of the grinder. In addition, the grinding range and grinding effect of the grinder are improved, thereby saving construction costs and time for the enterprise.

[0050] Embodiment 4,

[0051] Reference Figure 1-5 The difference between this embodiment and embodiment 1 is that the grinding machine also includes a walking assembly, which includes a connecting plate 22, a sliding rod 23, a pulley 24 and a fixed rod 25. One side of the connecting plate 22 is fixedly connected to the top surface of the grinding cover 6. There are two fixed rods 25. The outer walls of the fixed rods 25 are respectively abutted against the walking wheels 5 and one end is installed on the side of the connecting plate 22 away from the grinding cover 6. The sliding rod 23 is installed on the bottom end surface of the connecting plate 22, and both ends of the sliding rod 23 are connected to pulleys 24.

[0052] A weighting assembly is provided between the motor disk 1 and the grinding cover 6 to increase the distance between the walking wheel 5 and the ground. In this way, the handle 4 needs to be pressed very low to make the walking wheel 5 reach the ground, which is very inconvenient and makes the walking wheel 5 lose its original function. Therefore, the main purpose of designing the walking assembly in this embodiment is to replace the walking wheel 5 as a new walking mechanism of the grinder. The distance between the connecting plate 22 installed on the top surface of the grinding cover 6 and the ground is shorter than the distance between the walking wheel 5 and the ground. When the grinder needs to be pushed to walk, the handle 4 does not need to be pressed very low to allow the pulley 24 to touch the ground. The connecting plate 22 and the grinding cover 6 can be connected with screws to facilitate the installation and disassembly of the two. The outer walls of the fixed rods 25 are respectively in contact with the walking wheels 5 and one end of each is installed on the side of the connecting plate 22 away from the grinding cover 6. The side of the connecting plate 22 away from the grinding cover 6 extends outward from the grinding cover 6. The purpose of designing the fixed rod 25 here is to make the part of the connecting plate 22 extending out of the grinding cover 6 have a connection point with the walking wheel 5, reinforce and limit the connecting plate 22, and at the same time, when the pulley 24 is pressed down, there is a connection fulcrum between the handle 4 and the pulley 24. The walking assembly solves the problem that the height of the walking wheel 5 is inconvenient to walk the grinder, thereby improving the assembly efficiency of the grinder and saving enterprise costs. In addition, the walking assembly has a simple structure and is easy to process and manufacture.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A single-disc floor grinding machine, comprising a motor (3) arranged on a motor disk (1) to drive a disk body (2) to rotate, a handle (4) and two running wheels (5) installed at the bottom of the handle (4), a grinding cover (6) is arranged above the disk body (2), a first grinding disk (7) is connected to the bottom end surface of the disk body (2), and a connecting shaft (8) is arranged on the top end surface of the disk body (2), characterized in that: The grinding machine further comprises a weighting assembly, the weighting assembly comprising a fixing plate (9) connected to the bottom end surface of the motor plate (1) and a weighting plate (10) located directly below the fixing plate (9), the weighting plate (10) being located directly above the grinding cover (6); One end of the connecting shaft (8) is connected to the top surface of the disc body (2), and the other end thereof passes through the grinding cover (6), the weighted disc (10) and the fixing plate (9) and is connected to the output shaft of the motor (3); the connecting shaft (8), the grinding cover (6), the weighted disc (10), the fixing plate (9) and the output shaft of the motor (3) are on the same axis; A connecting assembly is provided on the weighting assembly, the connecting assembly comprising a plurality of bolts (11) and a plurality of nuts (12), one end of each of the bolts (11) sequentially passes through the fixing plate (9), the weighting disc (10) and the grinding cover (6), and then is connected to each of the nuts (12) to fasten the fixing plate (9), the weighting disc (10) and the grinding cover (6); The fixing plate (9) is a triangular structure. A block assembly is provided on the fixing plate (9). The block assembly includes three block units. The block units are evenly distributed along the axis of the fixing plate (9) at three corners close to the fixing plate (9). The block unit includes a circular block (13) and a connecting rod. One end of the connecting rod is fixedly connected to the bottom end surface of the circular block (13), and the other end is fixedly connected to the upper end surface of the fixing plate (9). The circular block (13) is fixed above the fixing plate (9) through the connecting rod. The motor disk (1) is an annular disk body (2) with a center hole formed at the axis. The bottom end surface of the motor disk (1) is provided with three annular grooves (14) evenly distributed along the axis of the motor disk (1). One end of the annular groove (14) in the counterclockwise direction is provided with a fastening block (15). Part of the fastening block (15) is tightly attached to the notch of the annular groove (14), and the remaining part is installed on the bottom end surface of the motor disk (1). The fastening block (15) is screwed to the motor disk (1), and the circular clamping block (13) is adapted to slide with one annular groove (14). The grinding machine also includes a grinding mechanism, which includes an inner gear ring (16) whose outer wall is fixedly connected to the inner wall of the grinding cover (6), a gear (17) meshingly connected to the inner gear ring (16), a second grinding disc (18) fixed to the bottom end surface of the gear (17), and a transmission component for transmitting power of the connecting shaft (8) to the gear (17).

2. The single-disc floor grinding machine according to claim 1, characterized in that: The transmission assembly comprises a bearing (19), a vertical rod (20) and a horizontal rod (21); the outer ring of the bearing (19) is fixedly connected to the hole of the gear (17), the inner ring of the bearing (19) is fixedly connected to the vertical rod (20), one end of the horizontal rod (21) is fixedly connected to the vertical rod (20), and the end of the horizontal rod (21) away from the vertical rod (20) is fixedly connected to the disk body (2).

3. The single-disc floor grinding machine according to claim 2, characterized in that: The number of the gears (17) and the second grinding discs (18) are both three. The gears (17) are respectively connected to the inner gear ring (16) and the gears (17) are evenly distributed on the inner side of the gear (17) ring along the axis of the disc body (2). The bottom end surfaces of the gears (17) are each connected to a second grinding disc (18). The holes of the gears (17) are each fixedly connected to the bearings (19), and the inner rings of the bearings (19) are each fixedly connected to the vertical rods (20). The vertical rods (20) are each connected to one end of a horizontal rod (21), and the ends of the horizontal rods (21) away from the vertical rods (20) are each fixedly connected to the disc body (2).

4. The single-disc floor grinding machine according to claim 1, characterized in that: The grinding machine also includes a walking assembly, which includes a connecting plate (22), a sliding rod (23), a pulley (24) and a fixed rod (25). One side of the connecting plate (22) is fixedly connected to the top surface of the grinding cover (6). There are two fixed rods (25). The outer walls of the fixed rods (25) are respectively in contact with the walking wheels (5) and one end of each fixed rod is installed on the side of the connecting plate (22) away from the grinding cover (6). The sliding rod (23) is installed on the bottom surface of the connecting plate (22), and both ends of the sliding rod (23) are connected to the pulley (24).

Images