A walk-behind cutting device

Abstract

The utility model discloses a hand -held cutting device, including main part, cutting assembly, operating rod and gyro wheel, cutting assembly and gyro wheel set up on the main part, operating rod is connected with the main part one end, and cutting assembly includes cutter, protective cover, mounting seat, adjusting assembly and drive assembly, and the cutter is connected with drive assembly and sets up in protective cover, and protective cover is connected through adjusting assembly with mounting seat, and protective cover has annular portion, and the inner wall and the outer wall of annular portion are equipped with a plurality of interval arrangement's protruding block and recess respectively, mounting seat is equipped with annular groove, and with a plurality of guide groove who communicates with annular groove, and protruding block enters annular groove from guide groove, adjusting assembly includes sliding piece, and the elastic piece of pressing sliding piece, and the clamping block of sliding piece corresponds with recess, presses sliding piece, and the clamping block separates with recess, and releases sliding piece, and the clamping block combines with recess. The utility model need not additional tool to adjust protective cover, and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of cutting equipment technology, and in particular to a hand-held cutting device. Background Technology

[0002] Currently, in industrial production, materials need to be transported through metal or plastic pipes. To improve economic efficiency, it is necessary to recycle abandoned pipes, also known as runner recycling. Generally, to facilitate smelting and feeding, the runner needs to be cut into multiple short sections. Currently, this is usually done by breaking the pipes, but this method involves flying debris, posing a risk of injury. Cutting devices are also used, but because the position of the cutting guard is fixed during cutting, and the runner dimensions vary, the angle of the guard needs frequent adjustment for better protection. This requires tools to remove screws, making the operation cumbersome and inefficient. Utility Model Content

[0003] The purpose of this invention is to solve the technical problem of the difficulty in adjusting the protective cover of existing cutting devices.

[0004] To achieve the objectives of this utility model, the following technical solution is adopted:

[0005] A hand-operated cutting device includes a main body, a cutting assembly, an operating lever, and rollers. The cutting assembly and rollers are mounted on the main body. The operating lever is connected to one end of the main body. The cutting assembly includes a blade, a protective cover, a mounting base, an adjustment assembly, and a drive assembly. The blade is connected to the drive assembly and is disposed within the protective cover. The protective cover is connected to the mounting base via the adjustment assembly. The protective cover has an annular portion, and the inner and outer walls of the annular portion are respectively provided with a plurality of spaced protrusions and grooves. The mounting base has an annular groove and a plurality of guide grooves communicating with the annular groove. The protrusions enter the annular groove through the guide grooves. The adjustment assembly includes a sliding member and an elastic member that presses against the sliding member. A locking block of the sliding member corresponds to the groove. Pressing the sliding member separates the locking block from the groove. Releasing the sliding member engages the locking block with the groove.

[0006] In some embodiments, a positioning element is provided between the annular portion and the sliding member, the positioning element having a buckle, and the mounting base having a slot corresponding to the buckle.

[0007] In some embodiments, the main frame of the positioning member has a hollow portion, and an elastic arm is provided in the hollow portion. The elastic arm is located between the annular portion and the sliding member. One end of the elastic arm is connected to the main frame, and the other end is a free end.

[0008] In some embodiments, the buckle is perpendicular to the main frame of the positioning element.

[0009] In some embodiments, the annular portion has a first through hole, the mounting base has a second through hole, and the sliding member has a third through hole, with the first through hole, the second through hole, the third through hole, and the hollow portion being coaxially arranged.

[0010] In some embodiments, the slider has a sliding portion with protrusions at both ends, and the sliding portion is configured to correspond to the mating surface of the mounting base.

[0011] In some embodiments, the locking block and the elastic element are respectively disposed at both ends of the slider, and the locking block and the slider are spaced apart.

[0012] In some embodiments, the operating lever is provided with a baffle located between the handle of the operating lever and the cutter.

[0013] In some embodiments, the drive assembly includes a drive motor and a transmission belt. The drive motor is connected to the shaft of the cutter via the transmission belt. The drive motor and the operating lever are respectively disposed at both ends of the main body, and the drive motor and the cutter are disposed on both sides of the roller.

[0014] In some embodiments, the main body is provided with a support rod, one end of which is connected to the main body and the other end extends downward. The drive motor is located above the support rod, and when the operating lever is released, the support rod is supported on the plane.

[0015] The hand-held cutting device provided by this utility model has the following advantages:

[0016] This utility model uses a pressing method to lock or separate the sliding part from the protective cover, allowing the protective cover to rotate and be positioned. The protective cover can be adjusted without additional tools, making it easy to operate. The cutting device can be manually pushed, facilitating flexible movement and cutting, and making it convenient to place. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of a hand-held cutting device provided in an embodiment of this utility model.

[0019] Figure 2 This is a schematic diagram of the cutting assembly provided in an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the annular portion provided in an embodiment of the present utility model.

[0021] Figure 4 This is an exploded view of the cutting component provided in an embodiment of this utility model.

[0022] Figure 5 This is another schematic diagram of the cutting assembly provided in this embodiment of the utility model.

[0023] Figure 6 This is a cross-sectional view of the cutting component provided in this embodiment of the utility model.

[0024] In the attached diagram: 1. Main body; 2. Cutting assembly; 3. Operating lever; 4. Roller; 5. Sliding component; 6. Elastic component; 7. Positioning component; 8. Baffle; 11. Support rod; 21. Cutting tool; 22. Protective cover; 23. Mounting base; 24. Adjustment assembly; 25. Drive assembly; 26. Annular part; 27. Rotating shaft; 31. Handle; 51. Locking block; 52. Pressing part; 53. Third through hole; 54. Sliding part; 55. Protrusion; 71. Buckle; 72. Main frame; 721. Hollowed-out part; 73. Elastic arm; 231. Annular groove; 232. Guide groove; 233. Slot; 234. Second through hole; 235. Mating surface; 251. Drive motor; 252. Transmission belt; 261. Protrusion; 262. Groove; 263. First through hole. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0026] In this embodiment, "several" and "more than" refer to two or more. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figures 1 to 6As shown, this embodiment provides a hand-held cutting device, including a main body 1, a cutting assembly 2, an operating lever 3, and rollers 4. The cutting assembly 2 and rollers 4 are mounted on the main body 1. The operating lever 3 is connected to one end of the main body 1, allowing the main body 1 to be pushed. The main body 1 moves on the ground via the rollers 4. The cutting assembly 2 includes a blade 21, a protective cover 22, a mounting base 23, an adjustment component 24, and a drive component 25. The blade 21 is connected to the drive component 25 and is housed within the protective cover 22. The drive component 25 drives the blade 21 to rotate for cutting. The protective cover 22 is semi-circular to prevent debris from flying everywhere. The blade 21 is a circular saw blade. The protective cover 22 is connected to the mounting base 23 via the adjustment component 24, allowing the protective cover 22 to rotate relative to the mounting base 23. The protective cover 22 has an annular portion 26. The inner and outer walls of the annular portion 26 are respectively provided with a plurality of spaced protrusions 261 and grooves 262. The mounting base 23 has an annular groove 231 and a plurality of guide grooves 232 communicating with the annular groove 231. The protrusions 261 enter the annular groove 231 through the guide grooves 232. Specifically, during assembly, since the guide grooves 232 are perpendicular to the annular groove 231, the annular portion 26 approaches the mounting base 23 axially, and the protrusions 261 enter the annular groove 231 along the guide grooves 232, allowing the protrusions 261 to slide within the annular groove 231 when the protective cover 22 rotates. The adjusting assembly 24 includes a sliding member 5 and an elastic member 6 that presses against the sliding member 5. The locking block 51 of the sliding member 5 corresponds to the groove 262. Pressing the sliding member 5 separates the locking block 51 from the groove 262; releasing the sliding member 5 engages the locking block 51 with the groove 262. In this embodiment, the elastic element 6 is a spring. When the pressing part 52 of the sliding element 5 is pressed, the elastic element 6 is compressed, and the sliding element 5 moves in the direction of the X arrow. At this time, the locking block 51 disengages from the groove 262, and the protective cover 22 can rotate relative to the mounting base 23. After the position of the protective cover 22 is adjusted to the correct position, the sliding element 5 is released and the protective cover 22 is rotated slightly. When the locking block 51 corresponds to the groove 262, the restoring force of the elastic element 6 causes the sliding element to move in the direction of the Y arrow, and the locking block 51 is locked into the groove 262. A positioning element 7 is provided between the annular part 26 and the sliding element 5. The positioning element 7 has a buckle 71, and the mounting base 23 has a groove 233 corresponding to the buckle 71. The buckle 71 is connected to the groove 233, so that the positioning element 7 can press down on the sliding element 5 to prevent it from falling off.

[0029] The above technical solution allows for manual operation, enabling the protective cover 22 to rotate relative to the mounting base 23, thereby facilitating the adjustment of the protective cover's angle and providing a better shielding effect.

[0030] Furthermore, the main frame 72 of the positioning member 7 has a hollow portion 721, within which an elastic arm 73 is provided. The elastic arm 73 is located between the annular portion 26 and the sliding member 5, with one end connected to the main frame 72 and the other end being a free end. After installation, the positioning member 7 limits the sliding member through the elastic arm 73. The buckle 71 is perpendicular to the main frame 72 of the positioning member 7, allowing the buckle 71 to correspond to the slot 233. The annular portion 26 has a first through hole 263, the mounting base 23 has a second through hole 234, and the sliding member 5 has a third through hole 53. The first through hole 263, the second through hole 234, the third through hole 53, and the hollow portion 721 are coaxially arranged, allowing the rotating shaft 27 of the driving tool 21 to pass through the aforementioned holes and connect to the tool 21.

[0031] Furthermore, the sliding member 5 has a sliding portion 54, with protrusions 55 at both ends. The sliding portion 54 is correspondingly arranged with the mating surface 235 of the mounting base 23, so that when the sliding member 5 slides, the sliding portion 54 moves on the mating surface 235, and the protrusions 55 limit the sliding range of the sliding member 5. The locking block 51 and the elastic member 6 are respectively arranged at both ends of the sliding member 5, with the locking block 51 spaced apart from the sliding member 5. Thus, when the user presses the sliding member 5 at one end, the locking block 51 at the other end moves, and the sliding member moves linearly. The structure is simple and easy to control.

[0032] Furthermore, the operating lever 3 is equipped with a baffle 8, located between the handle 31 and the blade 21 of the operating lever 3. The baffle 8 can further block debris and sparks flying backward, reducing the risk of head injury to the user. The drive assembly 25 includes a drive motor 251 and a transmission belt 252. The drive motor 251 is connected to the rotating shaft 27 of the blade 21 via the transmission belt 252. The drive motor 251 and the operating lever 3 are respectively located at both ends of the main body 1, and the drive motor 251 and the blade 21 are located on both sides of the roller 4. The drive motor 251 rotates the rotating shaft 27 via the transmission belt 252, thereby driving the blade 21 to rotate. The drive motor 251 and the blade 21 are located on both sides of the roller 4, which can make the load of the main body more balanced and facilitate the user to push. The main body 1 is equipped with a support rod 11, one end of which is connected to the main body 1, and the other end extends downward. The drive motor 251 is located above the support rod 11. When the operating lever 3 is released, the support rod 11 is supported on the plane. Because the drive motor 251 is relatively heavy, when the operating lever 3 is not subjected to pressure from the user, the weight of the drive motor 251 causes the support rod 11 to be supported on the bottom surface, which is convenient for placement.

[0033] In this embodiment, the user stands on the operating lever 3 and pushes the device to the designated position using the handle 31, positioning the blade 21 above the runner. The user then activates the drive motor 251 via the button on the handle 31 or the remote control. Pressing down on the handle 31 causes the blade 21 to cut the runner. When the position of the protective cover 22 needs adjustment, the user presses the sliding member 5 to separate the locking block 51 from the groove 262, rotates the protective cover to the appropriate position, and releases the sliding member 5, allowing the locking block 51 to engage in the groove for positioning.

[0034] The hand-held cutting device of this embodiment uses a pressing method to lock or separate the sliding part from the protective cover, allowing the protective cover to rotate and be positioned. The protective cover can be adjusted without additional tools, making it easy to operate. The cutting device can be manually pushed, making it easy to move and cut flexibly and convenient to place.

[0035] The technical principles of this utility model have been described above in conjunction with specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, other specific embodiments or equivalent substitutions of this utility model that can be conceived by those skilled in the art without creative effort will all fall within the scope of protection of this utility model.

Claims

1. A hand-held cutting device, characterized in that, The device includes a main body, a cutting assembly, an operating lever, and rollers. The cutting assembly and rollers are mounted on the main body. The operating lever is connected to one end of the main body. The cutting assembly includes a blade, a protective cover, a mounting base, an adjustment assembly, and a drive assembly. The blade is connected to the drive assembly and is housed within the protective cover. The protective cover is connected to the mounting base via the adjustment assembly. The protective cover has an annular portion, with several spaced protrusions and grooves on its inner and outer walls. The mounting base has an annular groove and several guide grooves communicating with the annular groove. The protrusions enter the annular groove through the guide grooves. The adjustment assembly includes a sliding member and an elastic member that presses against the sliding member. A locking block of the sliding member corresponds to a groove. Pressing the sliding member separates the locking block from the groove; releasing the sliding member re-engages the locking block with the groove.

2. The hand-held cutting device according to claim 1, characterized in that, A positioning element is provided between the annular part and the sliding element. The positioning element has a buckle, and the mounting base has a slot corresponding to the buckle.

3. The hand-held cutting device according to claim 2, characterized in that, The main frame of the positioning component has a hollowed-out section, and an elastic arm is provided inside the hollowed-out section. The elastic arm is located between the annular section and the sliding component. One end of the elastic arm is connected to the main frame, and the other end is a free end.

4. The hand-held cutting device according to claim 3, characterized in that, The buckle is perpendicular to the main frame of the positioning component.

5. The hand-held cutting device according to claim 4, characterized in that, The annular portion has a first through hole, the mounting base has a second through hole, and the sliding member has a third through hole. The first through hole, the second through hole, the third through hole, and the hollow portion are coaxially arranged.

6. The hand-held cutting device according to claim 1, characterized in that, The sliding member has a sliding part, and protrusions are provided at both ends of the sliding part. The sliding part and the mating surface of the mounting base are correspondingly arranged.

7. The hand-held cutting device according to claim 1, characterized in that, The locking block and the elastic element are respectively disposed at both ends of the sliding element, with the locking block and the sliding element spaced apart.

8. The hand-held cutting device according to claim 1, characterized in that, The control lever is equipped with a baffle, which is located between the handle of the control lever and the cutting tool.

9. The hand-held cutting device according to claim 1, characterized in that, The drive assembly includes a drive motor and a transmission belt. The drive motor is connected to the shaft of the cutter via the transmission belt. The drive motor and the operating lever are respectively located at both ends of the main body, and the drive motor and the cutter are located on both sides of the roller.

10. The hand-held cutting device according to claim 9, characterized in that, The main body is equipped with a support rod, one end of which is connected to the main body and the other end extends downward. The drive motor is located above the support rod. When the operating lever is released, the support rod is supported on the plane.

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