Wall shoveling machine with quick-release shovel blade

Abstract

The utility model provides a wall shoveling machine with a quick-release shovel blade, and belongs to the technical field of electric tools. The wall shoveling machine solves the problems that an existing wall shoveling machine is tedious in disassembly and assembly and high in disassembly and assembly technical requirement. The scraper knife and the motor are arranged on the shell, the motor drives the scraper knife to rotate through a transmission assembly, the scraper knife is detachably arranged on the shell through a quick release structure, the quick release structure comprises a center shaft, a rotating shaft and a shaft seat, the scraper knife is sleeved on the center shaft and fixedly connected with the center shaft, and the rotating shaft is fixedly connected with the shaft seat. The rotating shaft is rotatably arranged on the shell and is coaxial with the central shaft, one end of the central shaft is fixedly connected with the rotating shaft in an inserting manner, the other end of the central shaft is rotatably arranged on the shaft seat, the shaft seat is detachably and fixedly connected with the shell, and the motor is in transmission connection with the rotating shaft. The utility model has the advantages that when the scraper knife needs to be replaced, the screw for fixing the shaft seat is firstly disassembled, the shaft seat, the central shaft and the scraper knife are integrally pulled out, and the central shaft is separated from the rotating shaft, so that quick disassembly is realized.

Description

Technical Field

[0001] This utility model belongs to the field of power tool technology and relates to a wall scraper with a quick-release scraper blade. Background Technology

[0002] A wall scraper is an electric tool used to remove putty from walls. Chinese utility model patent CN201310249334.8 discloses a wall scraper, which includes a housing, a motor, a drive shaft, and a roller blade mounted on the drive shaft. The motor drives the drive shaft and the roller blade to rotate for wall scraping and cleaning operations.

[0003] While these wall scrapers can efficiently remove putty from walls, the rollers will wear out after long-term use and need to be replaced. Before disassembling the drive shaft and the roller assembly consisting of multiple rollers, the gearbox must be disassembled first. Therefore, these wall scrapers have the problem of being cumbersome to disassemble and assemble, and requiring high technical skills. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems of existing wall scraping machines by proposing a wall scraping machine with a blade that can be quickly disassembled and replaced.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A wall scraper with a quick-release blade includes a housing, a blade and a motor mounted on the housing. The motor drives the blade to rotate via a transmission assembly. The blade is characterized in that it is detachably mounted on the housing via a quick-release structure, which includes a central shaft, a rotating shaft, and a bearing seat. The blade is sleeved on and fixedly connected to the central shaft. The rotating shaft is rotatably mounted on the housing and coaxial with the central shaft. One end of the central shaft is inserted and fixedly connected to the rotating shaft, and the other end is rotatably mounted on the bearing seat. The bearing seat is detachably fixedly connected to the housing. The motor is driven by the rotating shaft.

[0007] In the aforementioned wall scraper with a quick-release blade, a socket is provided at one end of the rotating shaft facing the central shaft, and a plug is fixed at one end of the central shaft facing the rotating shaft. The plug is inserted into the socket, and the shapes of the plug and the socket are non-circular.

[0008] In the aforementioned wall scraper with a quick-release blade, the housing has a backing plate that abuts against the wall surface, and a recess is formed at one end of the housing facing the backing plate, where the scraper is disposed.

[0009] In the aforementioned wall scraper with a quick-release blade, a mounting hole is provided on the housing, and a bearing seat is embedded in the mounting hole and detachably fixed to the housing by fasteners.

[0010] In the aforementioned wall scraper with a quick-release blade, the bearing includes a base and an outer cover. The central shaft is rotatably mounted on the base via a bearing. The base is embedded in the aforementioned mounting hole. The outer cover is fixed to the housing via fasteners and presses the base into the mounting hole.

[0011] In the aforementioned wall scraper with a quick-release blade, a recessed hole is provided on the outer side of the base body, and a central shaft extends into the recessed hole. A side blade is fixed on the central shaft, and the side blade is located in the recessed hole. The base body has an opening on one side facing the aforementioned backing plate, and the side blade can extend out of the opening when it rotates.

[0012] In the aforementioned wall scraper with a quick-release blade, the housing is also provided with a handle. The handle is movably mounted on the housing via an elastic component, which includes a pin and a spring. The pin passes through the handle and is fixedly connected to the housing. The spring is mounted on the pin, and the two ends of the spring are pressed against the handle and the housing, respectively. The handle can move relative to the housing along the pin. An elastic connecting sleeve is also provided between the handle and the housing to cover the pin and the spring.

[0013] In the aforementioned wall scraper with a quick-release blade, the backing plate is movably mounted on the housing, and an adjustment component is provided between the housing and the backing plate. This adjustment component is used to drive the backing plate to translate relative to the housing, thereby adjusting the cutting depth of the blade.

[0014] In the aforementioned wall scraper with a quick-release blade, the adjustment assembly includes a screw, a nut, and a handle. A second spring is provided between the back plate and the housing. The second spring is used to push the back plate away from the housing. The screw is fixedly connected to the back plate, and the nut is fixedly connected to the handle and sleeved on the screw. Rotating the handle will drive the nut to rotate synchronously, so that the screw and the back plate can translate relative to the housing.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the blade needs to be replaced, first remove the screws of the fixed bearing, then pull out the bearing, the central shaft and the blade as a whole. The central shaft and the rotating shaft will be separated to achieve quick disassembly.

[0017] 2. The handle and the housing are elastically connected to prevent excessive hand vibration during operation;

[0018] 3. Adjust the cutting depth of the shovel by rotating the handle to move the back plate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the wall scraper of this utility model;

[0020] Figure 2 This is a cross-sectional view of the shovel blade of this utility model;

[0021] Figure 3 This is a schematic diagram of the installation of the shovel blade and the bearing seat of this utility model;

[0022] Figure 4 This is a cross-sectional view of the wall scraper of this utility model.

[0023] In the diagram, 1. Shell; 2. Shovel; 3. Central shaft; 4. Rotating shaft; 5. Insertion hole; 6. Insertion part; 7. Backing plate; 8. Base; 11. Outer cover; 12. Recessed hole; 13. Side blade; 14. Handle; 15. Pin; 16. Spring 1; 17. Screw; 18. Nut; 19. Handle; 20. Spring 2; 21. Elastic connecting sleeve. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] like Figure 1 and Figure 2 As shown, the wall scraper with a quick-release blade of this utility model includes a housing 1, a blade 2 and a motor mounted on the housing 1. The motor drives the blade 2 to rotate through a transmission component. The blade 2 is detachably mounted on the housing 1 through a quick-release structure, which includes a central shaft 3, a rotating shaft 4 and a bearing seat. The blade 2 is sleeved on the central shaft 3 and fixedly connected to the central shaft 3. The rotating shaft 4 is rotatably mounted on the housing 1 and coaxially arranged with the central shaft 3. One end of the central shaft 3 is inserted and fixedly connected to the rotating shaft 4, and the other end is rotatably mounted on the bearing seat. The bearing seat is detachably fixedly connected to the housing 1. The motor is driven by the rotating shaft 4.

[0026] like Figure 3 As shown, the rotating shaft 4 has an insertion hole 5 at one end facing the central shaft 3, and a plug-in part 6 is fixedly provided at the other end of the central shaft 3 facing the rotating shaft 4. The plug-in part 6 is inserted into the insertion hole 5, and the shapes of the plug-in part 6 and the insertion hole 5 are non-circular. The housing 1 has a backing plate 7 that abuts against the wall. A cavity is provided at one end of the housing 1 facing the backing plate 7, and the scraper 2 is disposed in the cavity. The housing 1 has a mounting hole, and the shaft seat is embedded in the mounting hole and detachably fixed to the housing 1 by fasteners. The shaft seat includes a seat body 8 and an outer cover 11. The central shaft 3 is rotatably mounted on the seat body 8 by bearings. The seat body 8 is embedded in the aforementioned mounting hole, and the outer cover 11 is fixed to the housing 1 by fasteners, pressing and fixing the seat body 8 in the mounting hole.

[0027] A recessed hole 12 is provided on the outer side of the seat body 8, and the central shaft 3 extends into the recessed hole 12. A side blade 13 is fixed on the central shaft 3. The side blade 13 is located in the recessed hole 12. The seat body 8 has an opening on the side facing the aforementioned backing plate 7. When the side blade 13 rotates, it can extend out of the opening.

[0028] like Figure 4 As shown, the housing 1 is also provided with a handle 14, which is movably mounted on the housing 1 via an elastic component. This elastic component includes a pin 15 and a spring 16. The pin 15 passes through the handle 14 and is fixedly connected to the housing 1. The spring 16 is sleeved on the pin 15, with both ends pressing against the handle 14 and the housing 1 respectively. The handle 14 can move relative to the housing 1 along the pin 15. An elastic connecting sleeve 21 is also provided between the handle 14 and the housing 1 to cover the pin 15 and the spring 16. The handle 19 is elastically connected to the housing 1 to reduce hand vibration.

[0029] like Figure 4 As shown, the backing plate 7 is movably mounted on the housing 1. An adjustment assembly is provided between the housing 1 and the backing plate 7. This adjustment assembly is used to drive the backing plate 7 to translate relative to the housing 1, thereby adjusting the cutting depth of the scraper 2. The adjustment assembly includes a screw 17, a nut 18, and a handle 19. A second spring 20 is provided between the backing plate 7 and the housing 1. This second spring 20 is used to push the backing plate 7 away from the housing 1. The screw 17 is fixedly connected to the backing plate 7. The nut 18 is fixedly connected to the handle 19 and is sleeved on the screw 17. Rotating the handle 19 drives the nut 18 to rotate synchronously, so that the screw 17 and the backing plate 7 translate relative to the housing 1.

[0030] It should be understood that in the claims and description of this utility model, all instances of "comprising..." should be understood as having an open meaning, that is, their meaning is equivalent to "containing at least...", and should not be understood as having a closed meaning, that is, their meaning should not be understood as "containing only...".

[0031] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A wall chaser with quick release cutter, comprising a housing (1) and a cutter (2) and a motor arranged on the housing (1), the motor driving the cutter (2) to rotate through a transmission assembly, characterized in that, The shovel (2) is detachably mounted on the housing (1) via a quick-release structure, which includes a central shaft (3), a rotating shaft (4), and a bearing seat. The shovel (2) is sleeved on the central shaft (3) and fixedly connected to the central shaft (3). The rotating shaft (4) is rotatably mounted on the housing (1) and coaxially mounted with the central shaft (3). One end of the central shaft (3) is inserted and fixedly connected to the rotating shaft (4), and the other end is rotatably mounted on the bearing seat. The bearing seat is detachably fixedly connected to the housing (1). The motor is drivenly connected to the rotating shaft (4).

2. A wall chaser according to claim 1, wherein, The rotating shaft (4) has a socket (5) at one end facing the central shaft (3), and a plug (6) is fixed at one end facing the rotating shaft (4). The plug (6) is inserted into the socket (5). The plug (6) and the socket (5) are non-circular in shape.

3. The wall chaser of claim 1 wherein: The housing (1) has a backing plate (7) that abuts against and fits against the wall. A recess is opened at one end of the housing (1) facing the backing plate (7), and the scraper (2) is set in the recess.

4. A wall scraper with a quick-release blade according to claim 3, characterized in that, The housing (1) has a mounting hole, and the bearing seat is embedded in the mounting hole and is detachably fixed to the housing (1) by fasteners.

5. A wall scraper with a quick-release blade according to claim 4, characterized in that, The bearing includes a seat (8) and an outer cover (11). The central shaft (3) is rotatably mounted on the seat (8) via a bearing. The seat (8) is embedded in the mounting hole. The outer cover (11) is fixed to the housing (1) via fasteners and presses the seat (8) into the mounting hole.

6. A wall scraper with a quick-release blade according to claim 5, characterized in that, A recessed hole (12) is provided on the outer side of the seat (8), and the central shaft (3) extends into the recessed hole (12). A side blade (13) is fixed on the central shaft (3). The side blade (13) is located in the recessed hole (12). The seat (8) opens on one side facing the aforementioned backing plate (7), and the side blade (13) can extend out of the opening when it rotates.

7. A wall scraper with a quick-release blade according to claim 1, characterized in that, The housing (1) is also provided with a handle (14), which is movably mounted on the housing (1) by an elastic component. The elastic component includes a pin (15) and a spring (16). The pin (15) passes through the handle (14) and is fixed to the housing (1). The spring (16) is sleeved on the pin (15). The two ends of the spring (16) are pressed against the handle (14) and the housing (1) respectively. The handle (14) can move relative to the housing (1) along the pin (15). An elastic connecting sleeve (21) is also provided between the handle (14) and the housing (1) to cover the pin (15) and the spring (16).

8. A wall scraper with a quick-release blade according to claim 3, characterized in that, The back plate (7) is movably mounted on the housing (1). An adjustment component is provided between the housing (1) and the back plate (7). The adjustment component is used to drive the back plate (7) to translate relative to the housing (1) and to adjust the cutting depth of the scraper (2).

9. A wall scraper with a quick-release blade according to claim 8, characterized in that, The adjustment assembly includes a screw (17), a nut (18), and a handle (19). A second spring (20) is provided between the back plate (7) and the housing (1). The second spring (20) is used to push the back plate (7) away from the housing (1). The screw (17) is fixedly connected to the back plate (7). The nut (18) is fixedly connected to the handle (19) and sleeved on the screw (17). Rotating the handle (19) will drive the nut (18) to rotate synchronously, so that the screw (17) and the back plate (7) can translate relative to the housing (1).

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