Weeding device with cutting blade easy to replace

Abstract

The utility model belongs to the technical field of weeding machines, and particularly relates to a weeding device with cutting blades easy to replace, which comprises a fixing frame, two tool rests and a fixing device, the upper surface of the fixing frame is fixedly connected with a control handle, and the two tool rests are respectively positioned on two sides of the fixing frame; a fixing device is arranged on the surfaces of the fixing frame and the knife rest and comprises two fixing rings, the side walls of the two fixing rings are fixedly connected with the knife rest and the side wall of the fixing frame respectively, the surfaces of the two fixing rings are sleeved with a main ring, the inner wall of the main ring is rotationally connected with an auxiliary ring, and a supporting device is arranged on the surface of the fixing frame and comprises a supporting rod. The upper surface of the supporting rod is fixedly connected with the surface of the fixing frame, a sliding rod is slidably connected to the inner wall of the supporting rod, and rolling wheels are rotatably connected to the two sides of the sliding rod; by arranging the whole device, the tool rest can be conveniently fixed to the surface of the fixing frame, meanwhile, the tool rest can be conveniently detached and replaced, and operation steps and operation time are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of weeders, in particular to a weeding device with easily replaceable cutting blades. Background Art

[0002] A lawn mower, also known as a lawn mower or lawn trimmer, is a mechanical device used to mow the lawn and remove weeds. It mainly uses a rotating blade or blade group to cut grass and other vegetation to keep the lawn neat and flat. Lawn mowers are widely used in homes, parks, gardens, golf courses, sports fields, and agricultural fields.

[0003] With respect to the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: when weeds need to be cleared, a lawn mower is generally used. Since the blade holders of most lawn mowers are fixed by flanges or welding, tools are required for disassembly and assembly, and multiple bolts need to be removed during the disassembly and assembly operation, which will cause cumbersome operation and waste of time in actual use. Therefore, in view of the above problems, a weeding device with easy replacement of cutting blades is proposed. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0005] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes a weeding device with easily replaceable cutting blades, comprising a fixing frame, two knife holders and a fixing device, the upper surface of the fixing frame is fixedly connected with a control handle, and the two knife holders are respectively located on both sides of the fixing frame; the surfaces of the fixing frame and the knife holder are provided with a fixing device, and the fixing device comprises two fixing rings, the side walls of the two fixing rings are respectively fixedly connected with the knife holder and the side wall of the fixing frame, the surfaces of the two fixing rings are sleeved with a main ring, the inner wall of the main ring is rotatably connected with a secondary ring, the secondary ring is sleeved on the surfaces of the knife holder and the fixing frame, the inner walls of the main ring and the secondary ring are threadedly connected with a positioning pin, the positioning pin is rotated to the inner walls of the main ring and the secondary ring, and the knife holder can be fixed to the surface of the fixing frame by arranging the fixing ring, the main ring, the secondary ring and the positioning pin.

[0006] Preferably, an insert block is fixedly connected to the surface of the tool holder near the fixed frame, a slot is opened on the surface of the fixed frame near the tool holder, the insert block is inserted into the inner wall of the slot of the fixed frame, and the arrangement of the insert block and the slot can increase the stability of the tool holder fixed on the fixed frame.

[0007] Preferably, the surfaces of the main ring and the secondary ring are provided with receiving grooves, and the fixed ring is inserted into the inner walls of the receiving grooves of the main ring and the secondary ring. When the main ring and the secondary ring rotate, the main ring and the secondary ring will be sleeved on the surface of the fixed ring through the receiving grooves. The opening of the receiving grooves enables the main ring and the secondary ring to receive the fixed ring.

[0008] Preferably, the surface of the positioning pin is covered with a protective sleeve. After the positioning pin is rotated to the inner wall of the main ring and the secondary ring, the protective sleeve is covered on the surface of the positioning pin. The protective sleeve can protect the positioning pin to a certain extent.

[0009] Preferably, positioning holes are provided on the surfaces of the main ring and the secondary ring, and the positioning pin surface is threadedly connected to the inner walls of the positioning holes of the main ring and the secondary ring. When the positioning pin rotates, the positioning pin rotates to the inner walls of the positioning holes of the main ring and the secondary ring, and the positioning holes are opened to accommodate the positioning pin.

[0010] Preferably, a supporting device is provided on the surface of the fixing frame, and the supporting device includes a supporting rod, the upper surface of the supporting rod is fixedly connected to the surface of the fixing frame, the inner wall of the supporting rod is slidably connected to a sliding rod, both sides of the sliding rod are rotatably connected to rollers, and the rollers roll on the ground. By arranging the supporting rod, the sliding rod and the rollers, the fixing frame can be supported to a certain extent, thereby reducing the pressure on the hands.

[0011] Preferably, the inner walls of the support rod and the slide rod are threadedly connected with a limit pin. After the slide rod slides to a suitable position in the support rod, the limit pin is rotated to the inner walls of the support rod and the slide rod, and the limit pin can limit the position of the slide rod in the support rod.

[0012] Preferably, a plurality of limiting holes are provided on the surface of the slide rod, and the inner wall of the limiting hole of the slide rod is threadedly connected to the surface of the limiting pin. When the limiting pin rotates, the limiting pin rotates to the inner wall of the limiting hole of the slide rod, and the limiting hole is opened to accommodate the limiting pin.

[0013] The utility model is beneficial in that:

[0014] 1. When the tool holder needs to be installed, the utility model pushes the tool holder to drive the fixing ring to move. After the two fixing rings are fitted together, the main ring and the secondary ring are pushed. The secondary ring rotates on the inner wall of the main ring. The main ring and the secondary ring are sleeved on the surfaces of the two fixing rings through the receiving grooves. When the tool holder moves, it also drives the insert block to slide. The insert block is inserted into the inner wall of the slot of the fixing frame. After the main ring and the secondary ring are fitted together, the locating pin is rotated to the inner wall of the locating hole of the main ring and the secondary ring. After the locating pin is installed, the protective cover is sleeved on the surface of the locating pin. When the driving component in the fixing frame is started, the driving component drives the insert block to rotate, and the insert block drives the tool holder to rotate. By setting the entire device, the tool holder can be conveniently fixed to the surface of the fixing frame, and the tool holder can also be conveniently disassembled and replaced, reducing the operation steps and operation time.

[0015] 2. When the utility model uses the entire device, the slide bar is pulled to slide on the inner wall of the support bar, and the slide bar drives the roller to move. After the slide bar slides to a suitable position, the limit pin is rotated to the inner wall of the support bar and the inner wall of the limit hole of the slide bar, and then the roller is pressed against the ground. When the fixed frame moves, the roller will roll on the ground. By setting up the entire device, the fixed frame can be auxiliary supported to reduce the pressure of the fixed frame on the hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a fixing frame in a weeding device with easy replacement of cutting blades;

[0018] Figure 2 A weeding device with an easily replaceable cutting blade Figure 1 A schematic diagram of the structure at A;

[0019] Figure 3 A schematic diagram of a top view of a fixing frame in a weeding device with an easily replaceable cutting blade;

[0020] Figure 4 A weeding device with an easily replaceable cutting blade Figure 3 Schematic diagram of the structure at B;

[0021] Figure 5 It is a schematic diagram of the side view structure of a fixing frame in a weeding device with easy replacement of cutting blades;

[0022] Figure 6 A weeding device with an easily replaceable cutting blade Figure 5 Schematic diagram of the structure at C.

[0023] In the figure: 1. fixing frame; 2. control handle; 3. tool holder; 4. fixing device; 41. fixing ring; 42. main ring; 43. secondary ring; 44. positioning pin; 45. storage groove; 46. plug-in block; 47. slot; 48. protective cover; 49. positioning hole; 5. supporting device; 51. supporting rod; 52. sliding rod; 53. roller; 54. limiting hole; 55. limiting pin. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-6 As shown, a weeding device with easily replaceable cutting blades comprises a fixed frame 1, two knife holders 3 and a fixing device 4, wherein a control handle 2 is fixedly connected to the upper surface of the fixed frame 1, and the two knife holders 3 are respectively located on both sides of the fixed frame 1; the surfaces of the fixed frame 1 and the knife holder 3 are provided with a fixing device 4, and the fixing device 4 comprises two fixing rings 41, and the side walls of the two fixing rings 41 are respectively fixedly connected to the knife holder 3 and the side walls of the fixed frame 1, and the surfaces of the two fixing rings 41 are covered with a main ring 42, and the inner wall of the main ring 42 is rotated There is a secondary ring 43 in a dynamic connection, and the secondary ring 43 is sleeved on the surface of the tool holder 3 and the fixed frame 1, and the inner walls of the main ring 42 and the secondary ring 43 are threadedly connected with a positioning pin 44; when working, the two fixed rings 41 are fitted together, and then the main ring 42 and the secondary ring 43 are pushed to let the main ring 42 and the secondary ring 43 be sleeved on the surface of the tool holder 3 and the fixed frame 1, and then the positioning pin 44 is rotated to the inner wall of the main ring 42 and the secondary ring 43. By setting the fixing ring 41, the main ring 42, the secondary ring 43 and the positioning pin 44, the tool holder 3 can be fixed on the surface of the fixed frame 1.

[0026] An insert block 46 is fixedly connected to the surface of the tool holder 3 near the fixed frame 1, and a slot 47 is opened on the surface of the fixed frame 1 near the tool holder 3, and the insert block 46 is inserted into the inner wall of the slot 47 of the fixed frame 1; when working, the tool holder 3 will drive the insert block 46 to slide, and the insert block 46 is inserted into the inner wall of the slot 47. The setting of the insert block 46 and the slot 47 can increase the stability of the tool holder 3 fixed on the fixed frame 1.

[0027] The surfaces of the main ring 42 and the secondary ring 43 are both provided with receiving grooves 45, and the fixed ring 41 is inserted into the inner walls of the receiving grooves 45 of the main ring 42 and the secondary ring 43; when working, the main ring 42 and the secondary ring 43 will be sleeved on the surface of the fixed ring 41 through the receiving grooves 45, and the opening of the receiving grooves 45 enables the main ring 42 and the secondary ring 43 to receive the fixed ring 41.

[0028] The surface of the positioning pin 44 is covered with a protective cover 48 . When working, the protective cover 48 is covered on the surface of the positioning pin 44 , and the protective cover 48 can protect the positioning pin 44 to a certain extent.

[0029] The surfaces of the main ring 42 and the secondary ring 43 are both provided with positioning holes 49, and the surfaces of the positioning pins 44 are threadedly connected to the inner walls of the positioning holes 49 of the main ring 42 and the secondary ring 43; during operation, the positioning pins 44 rotate to the inner walls of the positioning holes 49 of the main ring 42 and the secondary ring 43, and the positioning holes 49 are opened to accommodate the positioning pins 44.

[0030] A supporting device 5 is provided on the surface of the fixing frame 1, and the supporting device 5 includes a supporting rod 51. The upper surface of the supporting rod 51 is fixedly connected to the surface of the fixing frame 1, and the inner wall of the supporting rod 51 is slidably connected to a sliding rod 52, and both sides of the sliding rod 52 are rotatably connected to rollers 53; when working, the fixing frame 1 drives the supporting rod 51, the sliding rod 52 and the roller 53 to move, and the roller 53 rolls on the ground. By arranging the supporting rod 51, the sliding rod 52 and the roller 53, the fixing frame 1 can be supported to a certain extent, reducing the pressure on the hands.

[0031] The inner walls of the support rod 51 and the slide rod 52 are threadedly connected with a limit pin 55 ; when working, the limit pin 55 is rotated to the inner walls of the support rod 51 and the slide rod 52 , and the limit pin 55 can limit the position of the slide rod 52 in the support rod 51 .

[0032] A plurality of limiting holes 54 are provided on the surface of the slide rod 52 , and the inner wall of the limiting hole 54 of the slide rod 52 is threadedly connected to the surface of the limiting pin 55 ; during operation, the limiting pin 55 rotates to the inner wall of the limiting hole 54 of the slide rod 52 , and the limiting hole 54 is opened to accommodate the limiting pin 55 .

[0033] Working principle: when the tool holder 3 needs to be installed, the tool holder 3 is pushed to make the tool holder 3 drive the fixing ring 41 to move. After the two fixing rings 41 are fitted together, the main ring 42 and the secondary ring 43 are pushed. The secondary ring 43 rotates on the inner wall of the main ring 42. The main ring 42 and the secondary ring 43 will be sleeved on the surfaces of the two fixing rings 41 through the receiving groove 45. When the tool holder 3 moves, it will also drive the plug block 46 to slide. The plug block 46 is inserted into the inner wall of the slot 47 of the fixing frame 1. After the main ring 42 and the secondary ring 43 are fitted together, the positioning pin 44 is rotated to the inner wall of the positioning hole 49 of the main ring 42 and the secondary ring 43. After the positioning pin 44 is installed, the protective cover 48 is sleeved on the surface of the positioning pin 44. When the driving component in the fixing frame 1 is started, the driving part The component will drive the plug block 46 to rotate, and the plug block 46 drives the tool holder 3 to rotate. By setting up the entire device, the tool holder 3 can be conveniently fixed to the surface of the fixed frame 1, and the tool holder 3 can also be conveniently disassembled and replaced, reducing the operation steps and operation time; when using the entire equipment, the slide bar 52 is pulled to make the slide bar 52 slide on the inner wall of the support rod 51, and the slide bar 52 drives the roller 53 to move. After the slide bar 52 slides to the appropriate position, the limit pin 55 is rotated to the inner wall of the support rod 51 and the inner wall of the limit hole 54 of the slide bar 52, and then the roller 53 is placed on the ground. When the fixed frame 1 moves, the roller 53 will roll on the ground. By setting up the entire device, the fixed frame 1 can be auxiliary supported, reducing the pressure of the fixed frame 1 on the hands.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A weeding device with easily replaceable cutting blades, comprising a fixed frame (1), two blade holders (3) and a fixing device (4), wherein a control handle (2) is fixedly connected to the upper surface of the fixed frame (1), and the two blade holders (3) are respectively located on both sides of the fixed frame (1); characterized in that: The surfaces of the fixing frame (1) and the tool holder (3) are provided with fixing devices (4), and the fixing devices (4) include two fixing rings (41), and the side walls of the two fixing rings (41) are fixedly connected to the side walls of the tool holder (3) and the fixing frame (1) respectively; the surfaces of the two fixing rings (41) are sleeved with a main ring (42), and the inner wall of the main ring (42) is rotatably connected with a secondary ring (43), and the secondary ring (43) is sleeved on the surfaces of the tool holder (3) and the fixing frame (1); and the inner walls of the main ring (42) and the secondary ring (43) are threadedly connected with positioning pins (44).

2. A weeding device with easily replaceable cutting blades according to claim 1, characterized in that: An insert block (46) is fixedly connected to a position on the surface of the tool holder (3) close to the fixed frame (1), a slot (47) is provided on the surface of the fixed frame (1) close to the tool holder (3), and the insert block (46) is inserted into the inner wall of the slot (47) of the fixed frame (1).

3. A weeding device with easily replaceable cutting blades according to claim 1, characterized in that: The surfaces of the main ring (42) and the secondary ring (43) are both provided with receiving grooves (45), and the fixing ring (41) is inserted into the inner walls of the receiving grooves (45) of the main ring (42) and the secondary ring (43).

4. A weeding device with easily replaceable cutting blades according to claim 1, characterized in that: The surface of the positioning pin (44) is covered with a protective cover (48).

5. A weeding device with easily replaceable cutting blades according to claim 1, characterized in that: Positioning holes (49) are provided on the surfaces of the main ring (42) and the secondary ring (43), and the surfaces of the positioning pins (44) are threadedly connected to the inner walls of the positioning holes (49) of the main ring (42) and the secondary ring (43).

6. A weeding device with easily replaceable cutting blades according to claim 1, characterized in that: A support device (5) is provided on the surface of the fixed frame (1), and the support device (5) comprises a support rod (51), the upper surface of the support rod (51) is fixedly connected to the surface of the fixed frame (1), the inner wall of the support rod (51) is slidably connected to a slide rod (52), and both sides of the slide rod (52) are rotatably connected to rollers (53).

7. A weeding device with easily replaceable cutting blades according to claim 6, characterized in that: The inner walls of the support rod (51) and the slide rod (52) are threadedly connected to a limit pin (55).

8. A weeding device with easily replaceable cutting blades according to claim 7, characterized in that: A plurality of limiting holes (54) are provided on the surface of the slide rod (52), and the inner walls of the limiting holes (54) of the slide rod (52) are threadedly connected to the surface of the limiting pin (55).

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