A grinding device for building construction

Abstract

This utility model provides a grinding device for building construction, including an outer shell and an inner shell. A limiting part is provided at the bottom of the inner shell, passing through the outer shell and contacting the inner side of the outer shell. A positioning mounting groove is provided inside the inner shell, and a drive motor is installed in the positioning mounting groove. A mounting frame is also provided inside the outer shell, and a grinding component passes through the bottom of the mounting frame. The shaft of the drive motor passes through the mounting frame and connects to the grinding component. A transmission wheel is also provided on the main shaft of the drive motor, and multiple driven wheels are provided on the mounting frame around the transmission wheel. All driven wheels mesh with the transmission wheel, and fan blades are connected to the bottom of the driven wheels. The drive wheel of the drive motor meshes with the driven wheels of the mounting frame, causing the fan blades to rotate and generate airflow. A filter element inside the outer shell is connected to the dust box at the discharge port via a guide clip. Dust is guided by the airflow, filtered, and enters the dust box, achieving integrated collection, reducing dispersion, and ensuring the health of operators.

Description

Technical Field

[0001] This utility model belongs to the technical field of grinding devices, and more specifically, it relates to a grinding device for building construction. Background Technology

[0002] In building construction, grinding equipment is a crucial tool for ensuring project quality and the smooth progress of subsequent processes. It is primarily used for surface treatment of concrete, walls, and steel structures, adjusting surface smoothness to improve precision. Surfaces treated by this equipment provide a standard-compliant base for decoration and structural connections. However, grinding concrete and walls generates a significant amount of dust. Traditional grinding equipment lacks dust collection mechanisms, allowing this dust to directly disperse in the construction environment. This prolonged exposure to high dust levels can lead to symptoms such as coughing and asthma, negatively impacting the health of construction workers. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a grinding device for building construction, which solves the technical problem that traditional grinding devices lack a dust collection structure, causing construction workers to be exposed to dust for a long time, thus affecting their health.

[0004] The purpose and effect of this utility model for a grinding device used in building construction are achieved by the following specific technical means:

[0005] A grinding device for building construction includes an outer shell and an inner shell. A limiting part is provided at the bottom of the inner shell, passing through the outer shell and contacting the inner side of the outer shell. A positioning mounting groove is provided inside the inner shell, and a drive motor is installed within the positioning mounting groove. A mounting frame is also provided inside the outer shell, and a grinding component passes through the bottom of the mounting frame within the outer shell. The shaft end of the drive motor passes through the mounting frame and connects to the grinding component. A transmission wheel is also provided on the main shaft of the drive motor, and multiple sets of driven wheels are provided on the mounting frame around the transmission wheel. All sets of driven wheels mesh with the transmission wheel, and fan blades are connected to the bottom ends of the driven wheels.

[0006] The above technical solution further includes that a mounting plate is also provided in the outer shell at the bottom of the mounting bracket, and multiple sets of positioning posts are evenly arranged at the top of the mounting plate. Each of the multiple sets of positioning posts is fitted with a return spring, and the two ends of the return spring contact the mounting plate and the limiting part of the inner shell, respectively.

[0007] The above technical solution further includes that a filter element is provided between the mounting bracket and the mounting plate, a discharge port is provided on one side of the outer shell, a dust box is provided inside the discharge port, and a guide clip is provided on the port of the dust box. When the port of the dust box is inserted into the discharge port, the bottom end of the guide clip contacts the top end of the filter element.

[0008] The above technical solution further includes that a power supply port for powering the drive motor is also provided on the outer shell at the top of the discharge port.

[0009] The above technical solution further includes that the inner shell is provided with a handle for easy handling at the end away from the outer shell, and a control switch is provided on the outer shell near the handle, the control switch being electrically connected to the drive motor.

[0010] The above technical solution further includes that the top of the grinding part is provided with a positioning mounting part corresponding to the drive motor, and the shaft end of the drive motor passes through the positioning mounting part and is connected by bolts.

[0011] The above technical solution further includes that two sets of guide rods are also arranged opposite each other on the drive shaft of the drive motor, and the positioning mounting component is also provided with guide grooves corresponding to the two sets of guide rods. When the drive shaft of the drive motor is fixed with the positioning mounting component, the two sets of guide rods pass through the guide grooves.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The drive motor spindle is equipped with a transmission wheel that meshes with multiple driven wheels on the mounting bracket. The bottom of each driven wheel is connected to a fan blade. When the drive motor operates, the transmission wheel drives the driven wheels and fan blades to rotate synchronously, generating airflow. A filter element is installed between the mounting bracket and the mounting plate inside the outer casing. A dust box passes through the discharge port on one side of the outer casing, and a guide clip ensures that the dust box port contacts the filter element. The dust generated during grinding is guided by the airflow from the fan blades to the filter element, and after filtration, it enters the dust box. This structure integrates dust collection, filtration, and storage, preventing dust dispersion and reducing the dust content in the construction environment.

[0014] 2. The bottom limiting part of the inner shell passes through the outer shell. The top positioning post of the mounting plate is fitted with a return spring, with both ends contacting the mounting plate and the limiting part respectively. When operating by hand, the return spring can buffer the impact force of the grinding part contacting the working surface, reducing hand vibration. The end of the drive motor shaft is connected to the grinding part through a positioning mounting part, and the guide rod passes through the guide groove to enhance the connection stability. The control switch facilitates the adjustment of the drive motor's start and stop, and the handle is convenient to grip. The overall structure improves the ease of operation and stability, and reduces operator fatigue. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembled structure of this utility model.

[0016] Figure 2 This is a bottom view of the assembled structure of this utility model.

[0017] Figure 3 This is a cross-sectional view of the assembled structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the connection structure between the drive motor and the driven wheel of this utility model.

[0019] Figure 5 This is a schematic diagram of the assembly structure of the drive motor and the grinding part of this utility model.

[0020] Figure 6 This is a schematic diagram of the structure of the dust box of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Outer shell; 2. Inner shell; 3. Drive motor; 4. Grinding parts; 5. Dust box; 101. Limiting part; 102. Mounting bracket; 103. Drive wheel; 104. Driven wheel; 105. Fan blade; 201. Mounting plate; 202. Return spring; 301. Filter element; 302. Guide clip; 401. Power supply port; 501. Handle; 502. Control switch; 601. Positioning mounting part; 701. Guide rod. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model. Example

[0024] like Figures 1 to 6As shown, this utility model provides a grinding device for building construction, including an outer shell 1 and an inner shell 2. The bottom end of the inner shell 2 is provided with a limiting part 101, which passes through the outer shell 1 and contacts the inner side of the outer shell 1. The inner shell 2 is provided with a positioning mounting groove, and a drive motor 3 is provided in the positioning mounting groove. The outer shell 1 is also provided with a mounting bracket 102. A grinding part 4 is also provided in the outer shell 1 at the bottom end of the mounting bracket 102. The shaft end of the drive motor 3 passes through the mounting bracket 102 and is connected to the grinding part 4. A transmission wheel 103 is also provided on the main shaft of the drive motor 3. The mounting bracket 102 around the transmission wheel 103 is also provided with multiple sets of driven wheels 104, which mesh with the transmission wheel 103. The bottom end of the driven wheel 104 is also connected to a fan blade 105. The bottom limiting part 101 of the inner housing 2 passes through the outer housing 1 and contacts the inner side of the outer housing 1. This limits the relative displacement between the inner housing 2 and the outer housing 1, ensuring that they move in the same axial direction and preventing the grinding part 4 from shaking during operation due to component misalignment, thus ensuring grinding accuracy. At the same time, the outer housing 1 provides protection for the inner housing 2 and internal components, reducing the impact of the external environment on core components such as the drive motor 3.

[0025] The mounting bracket 102 positions and supports the driven wheel 104, ensuring a stable position during rotation and good meshing with the transmission wheel 103. This prevents transmission failure due to positional misalignment of the driven wheel 104, ensuring the normal operation of the fan blade 105 and thus guaranteeing the stability of the dust guiding effect. The positioning mounting groove inside the inner housing 2 is used to fix the drive motor 3, keeping it stable during operation and preventing positional misalignment due to vibration. The shaft end of the drive motor 3 passes through the mounting bracket 102 and connects to the grinding component 4. The transmission wheel 103 is mounted on the main shaft of the drive motor 3, and multiple sets of driven wheels 104 are mounted on the mounting bracket 102 around the transmission wheel 103, all meshing with the transmission wheel 103. When the drive motor 3 is running, the main shaft drives the transmission wheel 103 to rotate, and the transmission wheel 103 drives multiple sets of driven wheels 104 to rotate synchronously, realizing the operation of multiple components from a single power source without the need for an additional power device, simplifying the equipment structure and reducing energy consumption.

[0026] Driven wheel 104 is connected to fan blade 105 at its bottom end. When driven wheel 104 rotates, fan blade 105 rotates accordingly. The rotation of fan blade 105 generates airflow, which can guide the dust generated during the grinding process of grinding part 4 in a specific direction, reduce the diffusion of dust in the outer casing 1, facilitate subsequent centralized treatment of dust, and improve the construction environment.

[0027] like Figure 2 , Figure 3 and Figure 6As shown, a mounting plate 201 is also provided inside the outer shell 1 at the bottom of the mounting bracket 102. Multiple sets of positioning posts are evenly arranged at the top of the mounting plate 201, and each set of positioning posts is fitted with a return spring 202. The two ends of the return spring 202 contact the mounting plate 201 and the limiting part 101 of the inner shell 2, respectively. A filter element 301 is also provided between the mounting bracket 102 and the mounting plate 201. A discharge port is opened on one side of the outer shell 1, and a dust box 5 passes through the discharge port. A guide clip 302 is also provided at the port of the dust box 5. When the port of the dust box 5 passes through the discharge port, the bottom end of the guide clip 302 contacts the top end of the filter element 301. The positioning posts at the top of the mounting plate 201 are fitted with return springs 202, and their two ends contact the mounting plate 201 and the limiting part 101 of the inner shell 2, respectively. When the user presses down on the inner shell 2, the limiting part 101 squeezes the return spring 202, and the grinding part 4 contacts the grinding surface. After grinding is completed, the return spring 202 rebounds and pushes the limiting part 101, causing the inner housing 2 and the grinding part 4 to return to their original positions. This structure, through the extension and retraction of the return spring 202, allows for flexible adjustment of the contact state between the grinding part 4 and the grinding surface, adapting to different grinding intensity requirements.

[0028] The positioning posts are evenly distributed at the top of the mounting plate 201, guiding the return spring 202. This prevents the return spring 202 from shifting or twisting laterally during extension and retraction, ensuring that the return spring 202 is always under axial force. This ensures the stability of the rebound trajectory of the inner housing 2 and the grinding part 4, maintains the perpendicularity of the grinding part 4 to the grinding surface, and improves grinding accuracy. A filter 301 is installed between the mounting bracket 102 and the mounting plate 201. Dust generated during grinding moves towards the filter 301 under the action of airflow. The filter 301 can block larger particles in the dust, preventing them from entering other components inside the device, and preventing dust from adhering to the surfaces of transmission components such as the drive wheel 103 and driven wheel 104, reducing component wear and maintaining transmission efficiency.

[0029] A dust box 5 passes through a discharge port on one side of the outer casing 1. The bottom end of the guide clip 302 at the port of the dust box 5 contacts the top end of the filter element 301. Dust filtered by the filter element 301 enters the dust box 5 through the contact area between the filter element 301 and the guide clip 302, thus forming a dust collection channel. This allows the dust to be concentrated and stored inside the dust box 5, facilitating subsequent unified cleaning and reducing dust spillage. The guide clip 302 ensures precise alignment between the port of the dust box 5 and the filter element 301, preventing gaps between them. This prevents unfiltered or filtered dust from drifting into other areas inside the outer casing 1 through gaps, ensuring the airtightness of the dust collection path and improving dust collection efficiency.

[0030] The dust box 5 is equipped with a negative pressure generator (not shown in the figure). During use, the drive motor 3 and the negative pressure generator operate synchronously. The drive motor 3 drives the transmission wheel 103, which causes multiple sets of fan blades 105 to form suction. The device absorbs the dust generated during grinding. The negative pressure generator creates a negative pressure environment inside the dust box 5. The negative pressure suction generated is stronger than the airflow formed by the multiple sets of fan blades 105, which enhances the power of airflow from the grinding area to the dust box 5, improves dust collection efficiency, ensures that more dust is sucked in and collected into the dust box 5, and reduces the diffusion of dust in the outer shell 1. At the same time, the negative pressure environment prevents dust from accumulating on the surface of the filter element 301, keeps the filter element 301 breathable, keeps the airflow channel unobstructed, and ensures that the heat generated by the operation of the drive motor 3 is dissipated in time through the airflow, thus extending the service life of the equipment.

[0031] like Figure 1 and Figure 3 As shown, a power supply port 401 for powering the drive motor 3 is also provided on the outer shell 1 at the top of the discharge port. The power supply port 401 is located on the outer shell 1 at the top of the discharge port, facilitating the connection of external power lines to the drive motor 3. This shortens the path of the power lines outside the device, reducing the possibility of wire tangling or pulling; simultaneously, the power supply port 401 is separated from the discharge port location, preventing interference with the power lines during the installation and removal of the dust box 5. This ensures that the removal and placement of the dust box 5 is not affected by the power lines, while also reducing the risk of the lines being worn by the dust box 5. The power supply port 401 is integrated into the outer shell 1, forming a unified power access point. This simplifies the power supply structure of the drive motor 3 and facilitates the management and maintenance of the power supply lines.

[0032] like Figures 1 to 3 As shown, a handle 501 for easy gripping is provided on the end of the inner housing 2 away from the outer housing 1, and a control switch 502 is also provided on the outer housing 1 near the handle 501. The control switch 502 is electrically connected to the drive motor 3. The handle 501 on the end of the inner housing 2 away from the outer housing 1 allows the user to operate the entire device by holding the handle 501. This facilitates moving the device to different construction positions and provides a force point for pressing down the inner housing 2, conforming to hand operating habits. The control switch 502 is located on the outer housing 1 near the handle 501 and is electrically connected to the drive motor 3. When the user holds the handle 501, their hand can quickly reach the control switch 502 to achieve immediate control of starting and stopping the drive motor 3, reducing the range of operating movements. At the same time, the proximity of the control switch 502 and the handle 501 allows the movement of the device and the control of the drive motor 3 to be completed within the same range of hand movement. This improves the continuity of operation and reduces the probability of errors caused by scattered operation.

[0033] like Figures 4 to 5As shown, a positioning mounting part 601 is also provided at the top of the grinding part 4 corresponding to the drive motor 3. The shaft end of the drive motor 3 passes through the positioning mounting part 601 and is connected by bolts. Two sets of guide rods 701 are also provided on the drive shaft of the drive motor 3. The positioning mounting part 601 is also provided with guide grooves corresponding to the two sets of guide rods 701. When the drive shaft of the drive motor 3 is fixed with the positioning mounting part 601, the two sets of guide rods 701 pass through the guide grooves. The positioning mounting part 601 at the top of the grinding part 4 and the shaft end of the drive motor 3 passing through the positioning mounting part 601 provide a docking reference for the drive motor 3 and the grinding part 4, ensuring that their axes coincide and avoiding eccentric vibration of the grinding part 4 during operation due to connection misalignment. The shaft end of the drive motor 3 is connected to the positioning mounting part 601 by bolts. The bolt connection provides a stable fastening force, ensuring that the drive motor 3 and the grinding part 4 do not undergo relative displacement under high-speed operation and stress, and at the same time, it is easy to disassemble, facilitating the replacement or maintenance of the grinding part 4.

[0034] Two sets of guide rods 701 are provided on the drive shaft of the drive motor 3. The positioning mounting piece 601 has corresponding guide grooves, and the guide rods 701 pass through these grooves. The guide rods 701 cooperate with the guide grooves to further restrict the relative rotation between the drive motor 3 and the positioning mounting piece 601, enhancing the torsional resistance of the connection structure. The two sets of guide rods 701 are arranged opposite each other, ensuring that the driving force is evenly distributed circumferentially on the drive shaft. This avoids uneven force on the grinding part 4, leading to unilateral wear, extending the service life of the grinding part 4, and ensuring the flatness of the grinding surface.

[0035] The guide rod 701, in conjunction with the guide groove, serves as a guide during the insertion of the drive motor 3 shaft into the positioning mounting piece 601. This simplifies the installation process, improves the assembly efficiency of the drive motor 3 and the grinding piece 4, and ensures their proper positioning during bolt connection.

[0036] The above description is merely an embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A grinding device for building construction, comprising an outer shell (1) and an inner shell (2), characterized in that: The inner shell (2) is provided with a limiting part (101) at the bottom end. The limiting part (101) passes through the outer shell (1) and contacts the inner side of the outer shell (1). The inner shell (2) is provided with a positioning mounting groove, and a drive motor (3) is provided in the positioning mounting groove. The outer shell (1) is also provided with a mounting bracket (102). A grinding part (4) is also passed through the outer shell (1) at the bottom end of the mounting bracket (102). The shaft end of the drive motor (3) passes through the mounting bracket (102) and connects to the grinding part (4). The drive motor (3) is also provided with a transmission wheel (103) on its main shaft. The mounting bracket (102) around the transmission wheel (103) is also provided with multiple sets of driven wheels (104). The multiple sets of driven wheels (104) are meshed with the transmission wheel (103), and the bottom end of the driven wheel (104) is also connected to a fan blade (105).

2. The grinding device for building construction according to claim 1, characterized in that: An installation plate (201) is also provided inside the outer shell (1) at the bottom of the mounting bracket (102). Multiple sets of positioning posts are evenly arranged on the top of the installation plate (201). A reset spring (202) is sleeved on each of the multiple sets of positioning posts. The two ends of the reset spring (202) are in contact with the mounting plate (201) and the limiting part (101) of the inner shell (2), respectively.

3. A grinding device for building construction according to claim 2, characterized in that: A filter element (301) is also provided between the mounting bracket (102) and the mounting plate (201). A discharge port is provided on one side of the outer shell (1). A dust box (5) is inserted into the discharge port. A guide clip (302) is also provided on the port of the dust box (5). When the port of the dust box (5) is inserted into the discharge port, the bottom end of the guide clip (302) contacts the top end of the filter element (301).

4. A grinding device for building construction according to claim 3, characterized in that: The outer casing (1) at the top of the discharge port is also provided with a power supply port (401) for powering the drive motor (3).

5. A grinding device for building construction according to claim 1, characterized in that: The inner shell (2) is provided with a handle (501) for easy handling at one end away from the outer shell (1), and a control switch (502) is provided on the outer shell (1) near the handle (501), and the control switch (502) is electrically connected to the drive motor (3).

6. A grinding device for building construction according to claim 1, characterized in that: The grinding part (4) is also provided with a positioning mounting part (601) corresponding to the drive motor (3) at its top end. The shaft end of the drive motor (3) passes through the positioning mounting part (601) and is connected by bolts.

7. A grinding device for building construction according to claim 6, characterized in that: Two sets of guide rods (701) are also provided on the drive shaft of the drive motor (3). The positioning mounting part (601) is also provided with guide grooves corresponding to the two sets of guide rods (701). When the drive shaft of the drive motor (3) is fixed with the positioning mounting part (601), the two sets of guide rods (701) pass through the guide grooves.

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