A wall surface polishing device

Abstract

The utility model belongs to wall body polishing technical field, concretely relates to a wall surface polishing device, including mounting bracket, the angle adjusting assembly connection fixed shell of one side of the top end of mounting bracket is provided with transmission assembly in fixed shell, the output shaft connection of motor no.

Description

Technical Field

[0001] This utility model belongs to the field of wall grinding technology, specifically relating to a wall surface grinding device. Background Technology

[0002] In the field of building decoration and engineering maintenance, the wall surface grinding process plays an important role in quality indicators such as wall flatness and the adhesion of decorative materials. In recent years, with the diversification of architectural design styles, the application of curved walls in commercial complexes, cultural venues and other scenarios has increased significantly. Construction scenarios often have the need to grind both flat and curved walls at the same time.

[0003] Existing devices are mostly single-function designs, capable of grinding only flat or curved surfaces. When dealing with complex walls that include flat surfaces, curved corners, and sloping surfaces, operators need to frequently stop the machine to change grinding heads or switch to different equipment. Furthermore, when grinding sloping walls, the angle adjustment of existing devices mostly relies on manual support, which requires continuous force from the operator, easily leading to arm fatigue and making it difficult to ensure a constant angle during grinding, resulting in uneven wall thickness. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide a wall surface grinding device that solves the problems of existing wall surface grinding devices having limited functionality, inconvenient adjustment of grinding angle on inclined walls, and the need for frequent machine stops to replace equipment or grinding heads when dealing with complex walls, which affects work efficiency and quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wall surface grinding device, comprising a mounting frame, an angle adjustment component connected to a fixed shell on one side of the top of the mounting frame, a transmission component inside the fixed shell, the transmission component comprising a second motor fixed to one side of the fixed shell, the output shaft of the second motor being connected to a first helical gear rotatably mounted on the inner wall of one side of the fixed shell via bearings, both sides of the first helical gear being meshed with the second helical gear, each of the two sets of second helical gears having a one-way transmission component at opposite ends, the two sets of one-way transmission components being symmetrically arranged with the center line of the first helical gear as the axis, the one-way transmission component comprising a rotating component connected to the shaft of the second helical gear, an inner ratchet formed at the center of one end of the rotating component, the inner ratchet engaging with three sets of pawls, one end of the pawl being connected to a rotating block, the rotating block being rotatably mounted at the center of the inner ratchet, the shaft of the rotating block passing through and rotatably connecting both ends of the fixed shell, and the ends of the shaft passing through both ends of the fixed shell being respectively connected to an arc-shaped grinding end and a flat grinding end mounted at both ends of the fixed shell.

[0006] The beneficial effects of this utility model are: This device, through the coordinated design of the transmission component and the unidirectional transmission component, allows for rapid switching between flat and curved surface grinding modes simply by adjusting the direction of motor two via the controller.

[0007] This device features an angle adjustment assembly centered around a worm gear, replacing the traditional manual support method. When grinding inclined walls, the operator only needs to start motor one via the controller. Motor one drives worm one to rotate, and worm one engages with worm gear one, causing the fixed shell to rotate around the mounting rod at the top of the mounting bracket until the grinding part is completely in contact with the inclined wall, reducing the operator's labor intensity.

[0008] To drive the grinding parts: As a further improvement to the above technical solution: a connecting shell and a connecting plate are respectively sleeved on the outer sides of both ends of the fixed shell. A second mounting shell is fixed on the side of the connecting plate away from the fixed shell. A flat grinding component is rotatably installed in the through hole through the center of the second mounting shell. The flat grinding component is connected to the end of the shaft of one set of rotating blocks, and the end of the other set of shafts is connected to the driving wheel rotatably installed on the bottom surface of the connecting shell. A synchronous belt sleeved on the outside of the driving wheel is connected to the driven wheel rotatably installed on the bottom surface of the connecting shell. The shaft of the driven wheel rotatably connects to the connecting shell. A first mounting shell is fixed on the side of the connecting shell away from the fixed shell. A second worm gear is rotatably installed on the inner wall of the protective shell fixed at one end of the first mounting shell. A second worm gear is meshed with one side of the second worm gear. The second worm gear is connected to the shaft of the driven wheel, and the shaft of the driven wheel rotatably connects to the protective shell. An arc-shaped grinding component is rotatably installed in the through hole through the center of the first mounting shell. The shaft of one end of the arc-shaped grinding component is connected to the end of the shaft of the second worm gear.

[0009] The beneficial effects of this improvement are as follows: by directly connecting the rotating block shaft to the flat grinding part inside the second mounting shell, the power can be directly transmitted, which is suitable for grinding large-area flat surfaces. Through the multi-stage transmission of the driving wheel, synchronous belt, driven wheel, worm gear two, and worm wheel two, the arc-shaped grinding part inside the first mounting shell is driven.

[0010] In order to collect the dust: As a further improvement to the above technical solution: both mounting shell one and mounting shell two are internally configured as cavities, and several dust suction holes are opened through the cavities on the side of mounting shell one and mounting shell two facing the wall. A connecting pipe is provided through one side of mounting shell one and mounting shell two, and a flow cavity opened in the connecting pipe connects the cavities inside mounting shell one and mounting shell two. The connecting pipe is connected to a dust collection device, and the dust collection device is fixed on one side of the fixed shell.

[0011] The beneficial effects of this improvement are as follows: the dust suction holes in the cavities of mounting shell one and mounting shell two can capture dust during the grinding process. The connecting pipe connects the cavities of the two mounting shells, and the dust is finally collected by the dust collection equipment.

[0012] To increase the lifespan of the pawl: As a further improvement to the above technical solution: the pawl is made of elastic metal material, and the contact surface between the pawl and the inner ratchet is provided with a wear-resistant coating.

[0013] The beneficial effects of this improvement are as follows: the pawl is made of elastic metal material to ensure a tight engagement with the inner ratchet and prevent slippage; the wear-resistant coating on the engagement surface can reduce wear caused by long-term engagement.

[0014] For angle adjustment: As a further improvement to the above technical solution: the two ends of the mounting shell and the connecting shell are connected and fixed by connecting rods. The two sides of the fixed shell are rotatably set on the inner side of the top of the mounting frame by mounting rods. The angle adjustment assembly includes a motor fixed on one side of the top of the mounting frame. The output shaft of the motor is connected to a worm gear. The worm gear meshes with a worm wheel. The shaft of the worm wheel is connected to the end of the mounting rod on one side of the fixed shell.

[0015] The beneficial effects of this improvement are as follows: the fixed shell is rotatably connected to the mounting frame via the mounting rod, and the motor of the angle adjustment component drives the worm gear to mesh with the worm wheel, thereby causing the fixed shell to rotate around the mounting rod and achieving angle adjustment within the range of 0-90°.

[0016] In order to unify the control of this device: As a further improvement to the above technical solution: a controller is provided on one side of the mounting bracket, and the controller is equipped with a PLC microcontroller, a relay module, and a control switch. The controller is electrically connected to motor one, motor two, and the dust collection equipment, and the controller surface is provided with adjustment knobs for adjusting the motor speed and dust collection power.

[0017] The beneficial effect of this improvement is that it enables unified control of the device.

[0018] To ensure that worm gear and worm drive have self-locking characteristics: As a further improvement to the above technical solution: the meshing transmission ratio of the first worm and the first worm wheel is 1:20-1:40, and the meshing transmission ratio of the second worm and the second worm wheel is 1:15-1:30.

[0019] The beneficial effect of this improvement is that it enables the transmission between worm one and worm wheel one, and between worm two and worm wheel two, to have a self-locking characteristic.

[0020] In summary, the beneficial effects of this case are as follows: This device, through the coordinated design of the transmission component and the unidirectional transmission component, allows for rapid switching between flat and curved surface grinding modes simply by adjusting the direction of motor two via the controller.

[0021] This device features an angle adjustment assembly centered around a worm gear, replacing the traditional manual support method. When grinding inclined walls, the operator only needs to start motor one via the controller. Motor one drives worm one to rotate, and worm one engages with worm gear one, causing the fixed shell to rotate around the mounting rod at the top of the mounting bracket until the grinding part is completely in contact with the inclined wall, reducing the operator's labor intensity.

[0022] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic cross-sectional view of the present invention. Figure 1 ; Figure 4 This is a schematic cross-sectional view of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the unidirectional transmission component structure of this utility model; In the diagram: 1. Mounting bracket; 2. Angle adjustment assembly; 201. Worm gear one; 202. Worm gear one; 3. Arc-shaped grinding part; 4. Mounting shell one; 401. Protective shell; 5. Connecting rod; 6. Mounting shell two; 7. Mounting block; 8. Transmission assembly; 801. Motor two; 802. Helical gear one; 803. Helical gear two; 804. One-way transmission assembly; 8041. Rotating part; 8042. Pawl; 8043. Internal ratchet; 805. Driving wheel; 806. Driven wheel; 807. Worm gear two; 808. Worm gear two; 9. Connecting shell; 10. Connecting plate; 11. Surface grinding part; 12. Vacuum cleaning equipment; 13. Connecting pipe; 14. Fixed shell. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0025] like Figure 1-5As shown, a wall surface grinding device includes a mounting frame 1. An angle adjustment component 2 is provided on one side of the top of the mounting frame 1 and connected to a fixed housing 14. A transmission component 8 is provided inside the fixed housing 14. The transmission component 8 includes a second motor 801 fixed to one side of the fixed housing 14. The output shaft of the second motor 801 is connected to a first helical gear 802 rotatably mounted on the inner wall of one side of the fixed housing 14 via bearings. Both sides of the first helical gear 802 are meshed with second helical gears 803. One-way transmission components 804 are provided at the opposite ends of the two sets of second helical gears 803. The two sets of one-way transmission components 804 are inclined at... The centerline of gear 802 is symmetrically arranged along the axis. The one-way transmission assembly 804 includes a rotating component 8041 connected to the shaft of helical gear 803. An inner ratchet 8043 is formed at the center of one end of the rotating component 8041, and the inner ratchet 8043 is engaged with three sets of pawls 8042. One end of the pawls 8042 is connected to a rotating block, and the rotating block is rotatably mounted at the center of the inner ratchet 8043. The shaft of the rotating block passes through both ends of the fixed housing 14 and is rotatably connected to the arc-shaped grinding end and the flat grinding end respectively located at both ends of the fixed housing 14.

[0026] A connecting shell 9 and a connecting plate 10 are respectively fitted on the outer sides of both ends of the fixed shell 14. A second mounting shell 6 is fixed on the side of the connecting plate 10 away from the fixed shell 14. A flat grinding component 11 is rotatably installed in a through hole at the center of the second mounting shell 6. The flat grinding component 11 is connected to the end of the shaft of one set of rotating blocks, and the end of the other set of shafts is connected to a driving wheel 805 rotatably installed on the inner bottom surface of the connecting shell 9. A synchronous belt fitted on the outer side of the driving wheel 805 is connected to a driven wheel 806 rotatably installed on the inner bottom surface of the connecting shell 9. The shaft of the driven wheel 806 rotatably connects to the connecting shell 9. A first mounting shell 4 is fixed on the side of the connecting shell 9 facing away from the fixed shell 14. A protective device is fixed at one end of the first mounting shell 4. A worm gear 808 is rotatably mounted on the inner wall of the protective shell 401. One side of the worm gear 808 is meshed with a worm 807. The worm 807 is connected to the shaft of the driven wheel 806, and the shaft of the driven wheel 806 passes through and rotatably connects to the protective shell 401. An arc-shaped grinding component 3 is rotatably mounted in a through hole in the center of the mounting shell 4. The shaft of one end of the arc-shaped grinding component 3 is connected to the end of the shaft of the worm gear 808. The power is directly transmitted to the flat grinding component 11 inside the mounting shell 6 through the shaft of the rotating block, which is suitable for grinding large-area flat surfaces. The arc-shaped grinding component 3 inside the mounting shell 4 is driven by a multi-stage transmission of the driving wheel 805, the synchronous belt, the driven wheel 806, the worm 807, and the worm gear 808.

[0027] Both mounting shell 4 and mounting shell 6 are internally hollow, and several dust suction holes are opened through the hollow cavity on the side of mounting shell 4 and mounting shell 6 facing the wall. A connecting pipe 13 is installed through one side of mounting shell 4 and mounting shell 6, and a flow cavity opened in the connecting pipe 13 connects the hollow cavity inside mounting shell 4 and mounting shell 6. The connecting pipe 13 is connected to a dust collection device 12, which is fixed to one side of the fixed shell 14. The dust suction holes in the hollow cavity of mounting shell 4 and mounting shell 6 can capture dust through the dust suction holes when the grinding work is being carried out. The connecting pipe 13 connects the hollow cavities of the two mounting shells, and finally the dust is collected by the dust collection device 12.

[0028] The pawl 8042 is made of elastic metal material, and the engagement surface between the pawl 8042 and the inner ratchet 8043 is provided with a wear-resistant coating. The pawl 8042 is made of elastic metal material to ensure tight engagement with the inner ratchet 8043 and avoid slippage. The wear-resistant coating on the engagement surface can reduce wear caused by long-term engagement.

[0029] The two ends of the mounting shell 6 and the connecting shell 9 are connected and fixed by the connecting rod 5. The two sides of the fixed shell 14 are rotatably set on the inner side of the top of the mounting frame 1 by the mounting rod. The angle adjustment component 2 includes a motor fixed on one side of the top of the mounting frame 1. The output shaft of the motor is connected to a worm gear 202. The worm gear 202 meshes with a worm wheel 201. The shaft of the worm wheel 201 is connected to the end of the mounting rod on one side of the fixed shell 14. The fixed shell 14 is rotatably connected to the mounting frame 1 by the mounting rod. The motor of the angle adjustment component 2 drives the worm gear 202 to mesh with the worm wheel 201, causing the fixed shell 14 to rotate around the mounting rod, thereby realizing the angle adjustment within the range of 0-90°.

[0030] A controller is provided on one side of the mounting bracket 1, and the controller is equipped with a PLC microcontroller, a relay module, and a control switch. The controller 7 is electrically connected to motor 1 203, motor 2 801, and vacuum cleaner 12, and the surface of the controller 7 is provided with adjustment knobs for adjusting the motor speed and vacuum power.

[0031] The meshing transmission ratio of the worm gear 202 and the worm wheel 201 is 1:20 to 1:40, and the meshing transmission ratio of the worm gear 207 and the worm wheel 208 is 1:15 to 1:30; thus giving the transmission between the worm gear 1 and the worm wheel 1, and between the worm gear 2 and the worm wheel 2, a self-locking characteristic.

[0032] The working principle and usage process of this utility model are as follows: When sanding a wall surface, the user can place the mounting bracket 1 near the wall surface to be sanded and select the "flat sanding" mode through the knob of the controller 7. At this time, the motor 801 rotates forward, driving the helical gear 802 to rotate clockwise. The two sets of helical gears 803 on both sides rotate in opposite directions, i.e., the left side rotates counterclockwise and the right side rotates clockwise. The right helical gear 803 drives the corresponding one-way transmission component 804. The inner ratchet 8043 of the rotating component 8041 engages with the pawl 8042, driving the rotating block shaft to rotate. The left one-way transmission component is subjected to reverse force, and the pawl disengages from the inner ratchet, no longer transmitting power. If the wall surface is slightly tilted, the angle adjustment component 2 is activated by operating the controller. The motor drives the worm gear 202 to rotate, engaging the worm gear 201 to drive the fixed shell 1. 4. Rotate around the mounting rod until the flat grinding part 11 is completely in contact with the wall surface. The meshing structure of the worm gear 201 and worm 202 automatically locks during this process, requiring no additional fixing, ensuring that the angle does not shift during grinding. After starting the device, the right-side rotating block shaft directly drives the flat grinding part 11 inside the mounting housing 6 to rotate at high speed, grinding the wall surface. At the same time, the dust collection device 12 works synchronously. The dust generated during grinding enters the cavity through the dust collection hole facing the wall in the mounting housing 2 and is collected through the connecting pipe 13. Similarly, when grinding the wall surface at the arc-shaped corner where the column connects to the wall, switch to "arc surface grinding" on the controller 7. In the mode, motor 801 reverses, and the two helical gears 803 rotate clockwise on the left and counterclockwise on the right. The left rotating block shaft drives the drive wheel 805 in the connecting shell 9 to rotate, which drives the driven wheel 806 through the synchronous belt, thereby driving the worm gear 807 to rotate. After meshing with the worm wheel 808 to reduce speed, it drives the arc-shaped grinding part 3 in the mounting shell 4 to rotate. The angle adjustment component 2 adjusts the angle of the fixed shell 14 so that the arc-shaped grinding part 3 is completely in contact with the arc surface of the corner. During operation, the arc-shaped grinding part moves along the arc trajectory. The dust collection device 12 absorbs dust through the dust collection hole of the mounting shell 1 and collects it through the connecting pipe 13 and the channel shared by the flat surface grinding.

[0033] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional known device such as a computer that is used for control, and the existing publicly available power connection technology will not be elaborated in the text.

[0034] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of this utility model. These examples are merely to aid in understanding the method and core ideas of this utility model. The above descriptions are only preferred embodiments of this utility model. It should be pointed out that, due to the limitations of written expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or variations can be made without departing from the principles of this utility model, and the above technical features can be combined in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the concept and technical solution of this utility model to other situations without modification, should all be considered within the scope of protection of this utility model.

Claims

1. A wall surface grinding device, characterized in that: The system includes a mounting bracket (1), an angle adjustment component (2) connected to a fixed housing (14) on one side of the top of the mounting bracket (1), a transmission component (8) inside the fixed housing (14), the transmission component (8) including a second motor (801) fixed to one side of the fixed housing (14), the output shaft of the second motor (801) being connected to a first helical gear (802) rotatably mounted on the inner wall of one side of the fixed housing (14) via bearings, the first helical gear (802) being meshed with the second helical gear (803) on both sides, and a one-way transmission component (804) being provided at the opposite ends of the two sets of second helical gears (803), the two sets of one-way transmission components (804) being connected to the first helical gear (803) via the second helical gear (803). The center line of (802) is symmetrically arranged along the axis. The one-way transmission assembly (804) includes a rotating part (8041) connected to the shaft of the second helical gear (803). An inner ratchet (8043) is formed at the center of one end of the rotating part (8041), and the inner ratchet (8043) is engaged with three sets of pawls (8042). One end of the pawl (8042) is connected to a rotating block, and the rotating block is rotatably installed at the center of the inner ratchet (8043). The shaft of the rotating block passes through both ends of the rotating fixed shell (14), and the ends of the shafts passing through both ends of the fixed shell (14) are respectively connected to the arc-shaped grinding end and the flat grinding end set at both ends of the fixed shell (14).

2. The wall surface grinding device according to claim 1, characterized in that: A connecting shell (9) and a connecting plate (10) are respectively fitted on the outer sides of both ends of the fixed shell (14). A second mounting shell (6) is fixed on the side of the connecting plate (10) away from the fixed shell (14). A flat grinding component (11) is rotatably installed in the through hole through the center of the second mounting shell (6). The flat grinding component (11) is connected to the end of the shaft of one set of rotating blocks, and the end of the other set of shafts is connected to the driving wheel (805) rotatably installed on the bottom surface of the connecting shell (9). The synchronous belt fitted on the outside of the driving wheel (805) is connected to the driven wheel (806) rotatably installed on the bottom surface of the connecting shell (9). The shaft of the driven wheel (806) passes through the... A rotating connecting shell (9) is provided. A mounting shell (4) is fixed on the side of the connecting shell (9) facing away from the fixed shell (14). A worm gear (808) is rotatably provided on the inner wall of a protective shell (401) fixed at one end of the mounting shell (4). A worm gear (807) is meshed on one side of the worm gear (808). The worm gear (807) is connected to the shaft of the driven wheel (806). The shaft of the driven wheel (806) passes through the rotating connecting protective shell (401). An arc-shaped grinding part (3) is rotatably provided in the through hole opened in the center of the mounting shell (4). The shaft of one end of the arc-shaped grinding part (3) is connected to the end of the shaft of the worm gear (808).

3. The wall surface grinding device according to claim 1, characterized in that: Both mounting shell 1 (4) and mounting shell 2 (6) are hollow inside, and several dust suction holes are opened through the cavity on the side of mounting shell 1 (4) and mounting shell 2 (6) facing the wall. A connecting pipe (13) is provided through one side of mounting shell 1 (4) and mounting shell 2 (6), and the flow cavity opened in the connecting pipe (13) connects the cavity inside mounting shell 1 (4) and mounting shell 2 (6). The connecting pipe (13) is connected to the dust suction device (12), and the dust suction device (12) is fixed on one side of the fixed shell (14).

4. The wall surface grinding device according to claim 1, characterized in that: The pawl (8042) is made of elastic metal material, and the contact surface between the pawl (8042) and the inner ratchet (8043) is provided with a wear-resistant coating.

5. A wall surface grinding device according to claim 1, characterized in that: The two ends of the mounting shell (6) and the connecting shell (9) are connected and fixed by the connecting rod (5). The two sides of the fixed shell (14) are rotatably set on the inner side of the top of the mounting frame (1) by the mounting rod. The angle adjustment component (2) includes a motor fixed on one side of the top of the mounting frame (1). The output shaft of the motor is connected to the worm gear (202). The worm gear (202) meshes with the worm wheel (201). The shaft of the worm wheel (201) is connected to the end of the mounting rod on one side of the fixed shell (14).

6. A wall surface grinding device according to claim 1, characterized in that: The mounting bracket (1) is equipped with a controller on one side, and the controller is equipped with a PLC microcontroller, a relay module and a control switch. The controller (7) is electrically connected to motor one (203), motor two (801) and dust collection equipment (12) respectively, and the controller (7) is equipped with an adjustment knob for adjusting the motor speed and dust collection power.

7. A wall surface grinding device according to claim 1, characterized in that: The meshing transmission ratio of worm gear 1 (202) and worm wheel 1 (201) is 1:20-1:40, and the meshing transmission ratio of worm gear 2 (807) and worm wheel 2 (808) is 1:15-1:30.

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