Inner wall surface polishing device for house building engineering

Abstract

The utility model relates to an inner wall surface polishing device for house building engineering. The inner wall surface polishing device comprises a polishing head and a handle frame which are connected in a hinged mode. The polishing head comprises a shell, an adjusting sleeve, a rotating shaft, a motor, a rotating disc, an elastic base and polishing paper. The outer wall of the shell is provided with external threads, the shell is provided with a grinding cavity, the cavity bottom of the grinding cavity is rotationally sleeved with a rotating shaft, the end, located in the grinding cavity, of the rotating shaft is fixedly connected with a rotating disc, an elastic base is fixed to the front end face of the rotating disc, grinding paper is fixed to the front end face of the elastic base, and the other end of the rotating shaft is connected with a motor. The adjusting sleeve is provided with an internal thread matched with the shell and is arranged on the side wall of the shell in a threaded sleeving mode, and a supporting cushion block is fixed to the front end face of the adjusting sleeve. During use, the supporting cushion block is in contact with and abuts against the wall surface, the pressure applied by hands cannot influence the pressure between the polishing paper and the wall surface, the problem that the polishing flatness is inconsistent due to the fact that the using force of workers is inconsistent in the polishing process is solved, and the overall polishing quality and flatness are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to an inner wall grinding device for house construction engineering. Background Art

[0002] After the construction of a house is completed, there will be a lot of dust and protrusions on the inner walls, resulting in an overall uneven wall surface. This requires a grinder to grind it. Currently, the commonly used grinding devices basically require workers to move them by hand, and the strength of the grinding process is determined by the workers' experience. The greater the pressure applied by the grinder to the wall, the greater the grinding force. During the grinding process, workers will use different strengths, especially after a long period of grinding, due to arm fatigue, the grinding strength will change significantly, and the grinding effect will also be different. Therefore, there will be certain deviations in the flatness and grinding effect of the wall, thereby reducing the overall quality of the wall grinding.

[0003] Based on this, it is necessary to study an interior wall grinding device for housing construction engineering. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an inner wall grinding device for housing construction projects, which can effectively solve the problem of inconsistent grinding flatness caused by workers using different forces during the grinding process.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An inner wall grinding device for housing construction engineering comprises a grinding head and a handle frame which are hingedly connected, wherein the grinding head comprises a housing, an adjusting sleeve, a rotating shaft, a motor, a rotating disk, an elastic seat and grinding paper;

[0007] The shell is a cylindrical structure, the outer wall of the shell is provided with an external thread, the shell has a cylindrical grinding chamber opened forward, the bottom of the grinding chamber is rotatably sleeved with a rotating shaft, one end of the rotating shaft located in the grinding chamber is fixedly connected with a turntable, the front end surface of the turntable is fixed with an elastic seat, the front end surface of the elastic seat is fixed with grinding paper, and the other end of the rotating shaft is transmission-connected with a motor;

[0008] The front end surface of the grinding paper is located in front of the front end surface of the shell, and the diameter of the grinding paper is smaller than the diameter of the grinding cavity;

[0009] The adjusting sleeve is a circular ring structure, is provided with an internal thread adapted to the shell and is threadedly sleeved on the side wall of the shell, and grooves are evenly provided on the circumference of the front end surface of the adjusting sleeve, and a supporting pad is fixed in the groove.

[0010] Furthermore, it also includes a dust suction mechanism, which includes a dust collector and a dust suction pipe, one end of the dust suction pipe is connected to the dust collector, and the other end is connected to the polishing chamber.

[0011] Furthermore, a motor compartment is fixed to the rear end face of the shell, the motor is fixed in the motor compartment, a mounting opening connected to the motor compartment is opened at the bottom of the grinding cavity, and the rotating shaft is rotatably sleeved in the mounting opening through a bearing.

[0012] Furthermore, the rotating shaft is provided with a turntable step surface and a bearing front step surface, the rear end surface of the turntable abuts against the turntable step surface, the mounting opening is provided with a bearing rear step surface, and the bearing is installed between the bearing front step surface and the bearing rear step surface.

[0013] Furthermore, the groove is an annular groove, and the supporting pad is an annular structure corresponding to the annular groove.

[0014] Furthermore, a ring-shaped dust-proof brush is fixed to the front end surface of the shell.

[0015] Furthermore, lighting lamps are evenly fixed on the circumference of the side wall of the adjusting sleeve.

[0016] The beneficial effects of the above technical solution are:

[0017] (1) The utility model has an adjusting sleeve threadedly mounted on the shell, and a supporting pad is fixed on the front end surface of the adjusting sleeve. When in use, the supporting pad is brought into contact with the wall, and the pressure applied by the hand will not affect the pressure between the grinding paper and the wall. The grinding paper generates elastic force against the wall through the deformation of the elastic seat. When in use, the deformation of the elastic seat is always consistent, so that the pressure applied by the grinding paper to the wall is also always consistent, which solves the problem of inconsistent grinding flatness caused by workers using different forces during the grinding process, thereby improving the overall quality and flatness of the grinding; and by rotating the adjusting sleeve, the distance between the front end surface of the grinding paper and the front end surface of the supporting pad can be adjusted, thereby adjusting the deformation of the elastic seat and adjusting the pressure of the grinding paper on the wall, avoiding the problem of insufficient pressure on the wall or even idling of the grinding head, and when it is necessary to increase the grinding force on a special area, the grinding force can be adjusted by rotating the adjusting sleeve; in addition, the separate design of the supporting pad and the adjusting sleeve can make the structure and material selection of the supporting pad more flexible, and the use of a supporting pad with lower hardness can reduce damage to the wall.

[0018] (2) The utility model can avoid dust flying during grinding by designing a dust suction mechanism. The rotating shaft is rotatably arranged at the bottom of the grinding chamber through a bearing. The bearing can prevent dust from entering the motor compartment from the installation port and causing the motor to be stuck and damaged. Furthermore, by designing the supporting pad to be ring-shaped, the grinding chamber and the wall can form a relatively closed environment. The air in the grinding chamber is sucked by a vacuum cleaner, and the grinding head forms an adsorption force on the wall through the air pressure difference, thereby saving the worker the effort of lifting the grinding device.

[0019] (3) The utility model optimizes the structure of the rotating shaft and the installation opening. The rotating shaft is provided with a turntable step surface and a bearing front step surface. The rear end surface of the turntable abuts against the turntable step surface. The installation opening is provided with a bearing rear step surface. The bearing is installed between the bearing front step surface and the bearing rear step surface. This allows the turntable to transfer force to the rotating shaft when subjected to axial pressure to prevent the turntable from moving. The rotating shaft can transfer force to the bearing through the bearing front step surface, and the bearing then transfers force to the grinding cavity through the bearing rear step surface, thereby preventing the motor shaft from being subjected to axial pressure from the rotating shaft and extending the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the side section of the grinding head;

[0022] Figure 3 This is a schematic diagram of the front of the grinding head;

[0023] Figure 4 for Figure 2 A partial enlarged view of point A in the middle.

[0024] Figure numerals: 1 is a grinding head, 2 is a handle frame, 3 is a shell, 4 is an adjusting sleeve, 5 is a rotating shaft, 6 is a motor, 7 is a turntable, 8 is an elastic seat, 9 is a grinding paper, 10 is a supporting pad, 11 is a dust suction mechanism, 12 is a motor compartment, 13 is a dust-proof brush, 14 is a lighting lamp, 15 is a bearing, 101 is a grinding cavity, 102 is a mounting port, 103 is a rear step surface of a bearing, 501 is a turntable step surface, 502 is a front step surface of a bearing, 1101 is a vacuum cleaner, and 1102 is a dust suction duct. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0026] The present embodiment aims to provide an inner wall grinding device for housing construction projects, which is mainly used for grinding inner walls of housing construction projects, to address the problem of inconsistent grinding flatness caused by workers using different forces during the grinding process.

[0027] An internal wall grinding device for housing construction engineering, such as Figure 1 , including a grinding head 1 and a handle frame 2 which are hingedly connected, such as Figure 2 The grinding head 1 includes a shell 3, an adjusting sleeve 4, a rotating shaft 5, a motor 6, a turntable 7, an elastic seat 8 and a grinding paper 9; the shell 3 is a cylindrical structure, the outer wall of the shell 3 is provided with an external thread, the rear end face of the shell 3 is screwed with a motor bin 12, and the motor 6 is fixed in the motor bin 12 through the motor 6 seat; the shell 3 has a cylindrical grinding cavity 101 opening forward, and the bottom of the grinding cavity 101 is provided with a mounting port 102 connected to the motor bin 12, the rotating shaft 5 is rotatably sleeved in the mounting port 102 through a bearing 15, and the bearing 15 can prevent dust from entering the motor bin 12 from the mounting port 102 and causing the motor 6 to be stuck and damaged, and the rotating shaft 5 is located in the grinding cavity 101. One end of the cavity 101 is driven by a connecting key and has an interference fit with a turntable 7. An elastic seat 8 is bonded and fixed to the front end surface of the turntable 7. The material of the elastic seat 8 is sponge. A grinding paper 9 is bonded and fixed to the front end surface of the elastic seat 8. The grinding paper 9 is sandpaper. The front end surface of the grinding paper 9 is located in front of the front end surface of the shell 3, so that the grinding paper 9 can grind the wall surface; the diameters of the grinding paper 9, the elastic seat 8 and the turntable 7 are all smaller than the diameter of the grinding cavity 101, so as to facilitate their rotation, and the dust generated by grinding can enter the grinding cavity 101 from the gap between them and the side wall of the grinding cavity 101 to avoid dust scattering; the other end of the rotating shaft 5 is connected to the rotating shaft 5 of the motor 6 in a driving manner; Figure 1 The handle frame 2 is hingedly connected to the motor compartment 12, and a switch button is arranged on the handle frame 2.

[0028] like Figure 2 and Figure 3 The adjusting sleeve 4 is a circular ring structure. The adjusting sleeve 4 is provided with an internal thread adapted to the shell 3 and is threadedly mounted on the side wall of the shell 3. The front end surface of the adjusting sleeve 4 is evenly provided with grooves. A supporting pad 10 is nested in the groove. The supporting pad 10 is made of rubber. A countersunk hole is provided on the outer wall of the adjusting sleeve 4. The countersunk hole passes through the groove. The supporting pad 10 is fixed in the groove by a countersunk screw and the countersunk hole.

[0029] When the sanding paper 9 applies force to the wall, it will react to give the sanding paper 9 an axial force. This force will make the turntable 7 easily misplaced and will be transmitted to the motor 6 shaft along the rotating shaft 5, causing damage to the motor 6. To address this problem, in this embodiment, the rotating shaft 5 is provided with a turntable step surface 501 and a bearing front step surface 502. The rear end surface of the turntable 7 abuts against the turntable step surface 501. The mounting opening 102 is provided with a bearing rear step surface 103. The bearing 15 is installed between the bearing front step surface 502 and the bearing rear step surface 103. When the turntable 7 is subjected to axial pressure, the force will be transmitted to the rotating shaft 5 to prevent the turntable 7 from moving. The rotating shaft 5 can transmit the force to the bearing 15 through the bearing front step surface 502, and the bearing 15 then transmits the force to the grinding cavity 101 through the bearing rear step surface 103, thereby preventing the motor 6 shaft from being subjected to axial pressure from the rotating shaft 5 and extending the service life of the motor 6.

[0030] In order to absorb dust and prevent it from flying and affecting the workers' construction and health, Figure 1 , and also includes a dust suction mechanism 11, the dust suction mechanism 11 includes a dust collector 1101 and a dust suction pipe 1102, one end of the dust suction pipe 1102 is connected to the dust collector 1101, the dust collector 1101 is equipped with an exhaust fan and a dust bag, and the other end of the dust suction pipe 1102 is connected to the grinding chamber 101, which is used to absorb the dust accumulated in the grinding chamber 101 into the dust collector 1101.

[0031] In order to further utilize the dust suction effect, the groove is an annular groove, and the supporting pad 10 is an annular structure corresponding to the annular groove, so that the grinding chamber 101 and the wall can form a relatively closed environment. The vacuum cleaner 1101 is used to suck the air in the grinding chamber 101, and the grinding head 1 forms an adsorption force on the wall through the air pressure difference, thereby saving the worker's effort to lift the grinding device.

[0032] In order to further prevent dust from flying out of the grinding chamber 101 and to prevent dust from flying and entering the matching threaded sections of the shell 3 and the adjusting sleeve 4, an annular dust-shielding brush 13 is fixed to the front end face of the shell 3. The dust-shielding brush 13 extends toward the wall and can effectively prevent dust from scattering.

[0033] In order to enable workers to see the defects of the wall more clearly when polishing, lighting lamps 14 are evenly fixed on the circumference of the side wall of the adjustment sleeve 4 to illuminate the wall.

[0034] The method of using this embodiment is: rotate the adjusting sleeve 4 so that the front end face of the supporting pad 10 is located between the front end face of the sanding paper 9 and the front end face of the shell 3, ensuring that the sanding paper 9 can sand the wall, continue to rotate the adjusting sleeve 4, adjust the distance between the front end face of the supporting pad 10 and the front end face of the sanding paper 9, this distance is the elastic deformation of the elastic seat 8, the larger the distance, the greater the pressure exerted by the sanding paper 9 on the wall, and the greater the sanding force, then hold the handle frame 2 and make the sanding head 1 fit the wall, wherein the supporting pad 10 is parallel to the wall, the elastic seat 8 is squeezed and deformed so that the sanding paper 9 is close to the wall and exerts pressure on the wall, turn on the sander for sanding, during which the sanding force can be adjusted by rotating the adjusting sleeve 4 according to different sanding requirements.

Claims

1. An interior wall grinding device for housing construction engineering, comprising a grinding head and a handle frame connected in an articulated manner, characterized in that: The grinding head comprises a housing, an adjusting sleeve, a rotating shaft, a motor, a rotating disk, an elastic seat and grinding paper; The shell is a cylindrical structure, the outer wall of the shell is provided with an external thread, the shell has a cylindrical grinding chamber opened forward, the bottom of the grinding chamber is rotatably sleeved with a rotating shaft, one end of the rotating shaft located in the grinding chamber is fixedly connected with a turntable, the front end surface of the turntable is fixed with an elastic seat, the front end surface of the elastic seat is fixed with grinding paper, and the other end of the rotating shaft is transmission-connected with a motor; The front end surface of the grinding paper is located in front of the front end surface of the shell, and the diameter of the grinding paper is smaller than the diameter of the grinding cavity; The adjusting sleeve is a circular ring structure, is provided with an internal thread adapted to the shell and is threadedly sleeved on the side wall of the shell, and grooves are evenly provided on the circumference of the front end surface of the adjusting sleeve, and a supporting pad is fixed in the groove.

2. The inner wall grinding device for housing construction engineering according to claim 1 is characterized in that: It also includes a dust suction mechanism, which includes a dust collector and a dust suction pipe. One end of the dust suction pipe is connected to the dust collector, and the other end is connected to the polishing chamber.

3. The inner wall grinding device for housing construction engineering according to claim 2 is characterized in that: A motor compartment is fixed on the rear end surface of the shell, the motor is fixed in the motor compartment, a mounting opening connected to the motor compartment is opened at the bottom of the grinding cavity, and the rotating shaft is rotatably sleeved in the mounting opening through a bearing.

4. The inner wall grinding device for housing construction engineering according to claim 3 is characterized in that: The rotating shaft is provided with a turntable step surface and a bearing front step surface, the rear end surface of the turntable abuts against the turntable step surface, the mounting opening is provided with a bearing rear step surface, and the bearing is mounted between the bearing front step surface and the bearing rear step surface.

5. The inner wall grinding device for housing construction engineering according to claim 4 is characterized in that: The groove is an annular groove, and the support pad is an annular structure corresponding to the annular groove.

6. The inner wall grinding device for housing construction engineering according to claim 5 is characterized in that: An annular dust-proof brush is fixed on the front end surface of the shell.

7. An interior wall grinding device for housing construction engineering according to any one of claims 1 to 6, characterized in that: Illuminating lamps are evenly fixed on the circumference of the side wall of the adjusting sleeve.

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