Stepping lawn mower with alternating current motor

Abstract

The utility model discloses a stepping lawn mower with an alternating current motor, which comprises a stepping lawn mower body, the upper surface of the stepping lawn mower body is fixedly provided with a connecting cylinder, and the alternating current motor is fixedly arranged in the connecting cylinder. An output shaft of the alternating-current motor rotationally penetrates out of the lower surface of the connecting cylinder to the lower surface of the stepping lawn mower body, a T-shaped column is fixedly installed on the lower surface of the output shaft of the alternating-current motor, a cutting knife is slidably installed on the outer surface of the T-shaped column, and two sets of connecting blocks are fixedly installed at one end of the lower surface of the stepping lawn mower body; a grass combing mechanism is rotationally installed between the two sets of connecting blocks, and the outer surface of the T-shaped column is sleeved with the grass combing end of the grass combing mechanism. Through the design of the grass combing mechanism, lodging grass stems are combed, straightened out and then cut, the problem of cutting missing caused by lodging of the grass stems is effectively avoided, and the uniform and efficient lawn trimming effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of garden machinery technology, specifically a stepper lawnmower with an AC motor. Background Technology

[0002] With the improvement of living standards, modern society has increasingly higher requirements for the beautification of living environments. This has also spurred the vigorous development of landscaping projects. Consequently, the market demand for landscaping maintenance machinery is gradually expanding, significantly reducing the labor intensity of gardeners. Among these, the market demand for step-type lawnmowers is particularly evident, as they are characterized by simple operation, compact structure, and easy disassembly.

[0003] For example, the national authorized patent announcement number CN210093956U discloses a protective device for the transmission system of a step-type lawnmower, including a chassis, a parallel connecting rod, a front wheel, and a rear wheel. The parallel connecting rod is mounted on the chassis, and the front and rear wheels are connected as one unit by the parallel connecting rod. An engine is mounted on the upper surface of the chassis, and a pulley is mounted on the output shaft of the engine via a keyway and screws. A blade is mounted directly below the pulley, and the pulley is connected to the transmission mechanism. A belt cover is provided on the lower surface of the chassis. This utility model illustrates a protective device for the transmission system of a step-type lawnmower. The belt cover, mounted on the chassis, covers the pulley and transmission belt, preventing the impact of shredded grass, debris, or even hard objects such as stones on the pulley and transmission belt when the working blade rotates at high speed to cut weeds. This prevents mechanical damage or even belt breakage and failure, effectively protecting the transmission system and extending its service life.

[0004] However, the aforementioned protective device in the transmission system of the walking lawnmower cannot re-comb up and trim the flattened grass stems during the lawn mowing process, which will lead to missed trimming and result in a mottled effect of "uneven height" on the lawn after mowing, affecting the overall flatness and aesthetics. Utility Model Content

[0005] The purpose of this utility model is to provide a stepper lawnmower with an AC motor to solve the problem mentioned in the background art that the stepper lawnmower cannot comb up the flattened grass stems during mowing, resulting in missed mowing and causing the lawn to be uneven after mowing, affecting the flatness and aesthetics.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A stepper lawnmower with an AC motor includes: a stepper lawnmower body, a connecting cylinder fixedly installed on the upper surface of the stepper lawnmower body, an AC motor fixedly installed inside the connecting cylinder, the output shaft of the AC motor rotatably extending from the lower surface of the connecting cylinder to the lower surface of the stepper lawnmower body, a T-shaped column fixedly installed on the lower surface of the output shaft of the AC motor, a cutting blade slidably installed on the outer surface of the T-shaped column, two sets of connecting blocks fixedly installed at one end of the lower surface of the stepper lawnmower body, a grass combing mechanism rotatably installed between the two sets of connecting blocks, and the grass combing end of the grass combing mechanism being fitted onto the outer surface of the T-shaped column.

[0008] Preferably, the combing mechanism includes a connecting plate, which is rotatably installed between two sets of connecting blocks. A comb plate is fixedly installed at one end of the connecting plate, and an insertion port is provided at the center of the comb plate so that the comb plate can be fitted onto the outer surface of the T-shaped column through the insertion port.

[0009] Preferably, a first sliding groove is provided at one end of the inner side between two sets of comb teeth of the comb plate, a connecting plate is slidably installed between the first sliding grooves, a threaded rod is installed in the inner thread of the connecting plate, and a butterfly column is fixedly installed on the upper surface of the threaded rod.

[0010] Preferably, the butterfly-shaped column rotates in a damped manner within the body of the walking lawnmower and rotates out through the upper surface of the walking lawnmower body.

[0011] Preferably, the connecting plate has a second sliding groove in the center, and an L-shaped plate is slidably installed in the second sliding groove. The other end of the L-shaped plate is slidably installed between the inner and outer surfaces of the constriction ring, and the constriction ring is fixedly installed on the lower surface of the cutting blade.

[0012] Preferably, the comb plate is connected to the threaded rod via a connecting disc. The rotational motion of the threaded rod is converted into linear displacement of the comb plate via the connecting disc, which synchronously drives the L-shaped plate to drive the cutting blade to make linear reciprocating motion along the T-shaped column axis.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the design of the AC motor, T-shaped column, cutting blade, and combing mechanism, during lawn mowing, the operator can adjust the tilt height of the combing end in the combing mechanism according to the required lawn mowing height. The adjustment of the combing end will drive the cutting blade to rise and fall. After adjustment, the AC motor can be started to drive the T-shaped column and cutting blade to rotate at high speed through the output shaft. As the walking lawnmower moves, the tilted combing mechanism will comb up and straighten the fallen grass stems, making them upright and guiding them into the rotation cutting range of the cutting blade. The cutting blade uses the shearing force generated by the high-speed rotation to cut the combed grass stems in one go, effectively avoiding the problem of missed cutting caused by fallen grass stems, and achieving a uniform and efficient lawn mowing effect.

[0015] 2. Through the design of the connecting plate, comb plate, connecting disc, threaded rod, L-shaped plate, and constriction ring, when the user needs to adjust the lawn mowing height, they can directly twist the butterfly column located on the upper surface of the stepper lawnmower body to drive the threaded rod through the threaded transmission in the connecting disc. The driven connecting disc can then lift or push the comb plate through the first sliding bar opening, allowing it to flip up or down between the two sets of connecting blocks via the connecting plate. During this process, the lifted or pushed comb plate will also lift or push the L-shaped plate through the second sliding bar opening in the center. The L-shaped plate can then lift or push the cutting blade up and down on the outer surface of the T-shaped column via the constriction ring, ultimately achieving precise adjustment of the lawn mowing height. During the adjustment process, the change in the tilt angle of the comb plate can be precisely synchronized with the height adjustment of the cutting blade, ensuring that the combing and cutting actions are always matched. This makes the lawn mowing height consistent, avoiding unevenness and improving the overall aesthetics and flatness of the lawn. Attached Figure Description

[0016] Figure 1 This is a top view of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model from a bottom view;

[0018] Figure 3 This is a schematic diagram of the overall side cross-section of this utility model;

[0019] Figure 4 This is a schematic diagram of the connecting plate and comb plate of this utility model;

[0020] Figure 5 This is a schematic diagram of the combing mechanism of this utility model.

[0021] In the diagram: 1. Stepping lawnmower body; 101. Connecting cylinder; 102. AC motor; 103. T-shaped column; 104. Cutting blade; 105. Connecting block; 106. L-shaped plate; 107. Shrinking ring; 2. Combing mechanism; 201. Connecting plate; 202. Combing plate; 203. Insertion port; 204. First slide bar opening; 205. Connecting disc; 206. Threaded rod; 207. Butterfly column; 208. Second slide bar opening. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This embodiment provides the following technical solution:

[0024] like Figures 1-3 As shown, a stepper lawnmower with an AC motor includes: a stepper lawnmower body 1, a connecting cylinder 101 fixedly installed on the upper surface of the stepper lawnmower body 1, an AC motor 102 fixedly installed inside the connecting cylinder 101, the output shaft of the AC motor 102 rotatably passing through the lower surface of the connecting cylinder 101 to the lower surface of the stepper lawnmower body 1, a T-shaped column 103 fixedly installed on the lower surface of the output shaft of the AC motor 102, a cutting blade 104 slidably installed on the outer surface of the T-shaped column 103, two sets of connecting blocks 105 fixedly installed at one end of the lower surface of the stepper lawnmower body 1, a grass combing mechanism 2 rotatably installed between the two sets of connecting blocks 105, and the grass combing end of the grass combing mechanism 2 being fitted onto the outer surface of the T-shaped column 103.

[0025] Through the design of the AC motor 102, T-shaped column 103, cutting blade 104, and combing mechanism 2, during lawn mowing, the operator can adjust the tilt height of the combing end in the combing mechanism 2 according to the required lawn mowing height. The adjustment of the combing end will drive the cutting blade 104 to rise and fall. After adjustment, the AC motor 102 can be started to drive the T-shaped column 103 and the cutting blade 104 to rotate at high speed through the output shaft. During the movement of the stepper lawnmower body 1, the tilted combing mechanism 2 will comb up and straighten the fallen grass stems, making them upright and guiding them into the rotation cutting range of the cutting blade 104. The cutting blade 104 uses the shearing force generated by the high-speed rotation to cut the combed grass stems in one go, effectively avoiding the problem of missed cutting caused by fallen grass stems, and achieving a uniform and efficient lawn mowing effect.

[0026] like Figures 4-5 As shown, the lawn combing mechanism 2 includes a connecting plate 201, which is rotatably mounted between two sets of connecting blocks 105. A comb plate 202 is fixedly mounted on one end of the connecting plate 201. An insertion port 203 is provided at the center of the comb plate 202, allowing the comb plate 202 to be fitted onto the outer surface of the T-shaped post 103 through the insertion port 203. A first sliding strip port 204 is provided on the inner side of one end between two sets of comb teeth of the comb plate 202. A connecting plate 205 is slidably mounted between the first sliding strip ports 204. A threaded rod 206 is threaded onto the connecting plate 205. A butterfly post 207 is fixedly mounted on the upper surface of the threaded rod 206. The butterfly post 207 rotates in a damped manner within the step lawnmower body 1 and rotates out through the upper surface of the step lawnmower body 1. The center of the connecting plate 201 is provided with a second sliding groove 208. An L-shaped plate 106 is slidably installed in the second sliding groove 208. The other end of the L-shaped plate 106 is slidably installed between the inner and outer surfaces of the constriction ring 107. The constriction ring 107 is fixedly installed on the lower surface of the cutting blade 104. The comb plate 202 is driven by the threaded rod 206 through the connecting plate 205. The rotational motion of the threaded rod 206 is converted into the linear displacement of the comb plate 202 through the connecting plate 205, which synchronously drives the L-shaped plate 106 to drive the cutting blade 104 to make linear reciprocating motion along the axis of the T-shaped column 103.

[0027] Through the design of the connecting plate 201, comb plate 202, connecting disc 205, threaded rod 206, L-shaped plate 106, and constriction ring 107, when the user needs to adjust the lawn mowing height, the butterfly column 207 located on the upper surface of the stepper lawnmower body 1 can be directly twisted to drive the threaded rod 206 through the threaded transmission within the connecting disc 205. The driven connecting disc 205 can then lift or push the comb plate 202 through the first sliding bar opening 204, allowing it to flip up or down between the two sets of connecting blocks 105 via the connecting plate 201. During this process, the comb plate 202 is lifted or pushed down. 02 will lift or push the L-shaped plate 106 together through the second sliding strip 208 in the center. The L-shaped plate 106 can then lift or push the cutting blade 104 up and down on the outer surface of the T-shaped post 103 through the constriction ring 107, thus achieving precise adjustment of the lawn mowing height. During the adjustment process, the change in the tilt angle of the comb plate 202 can be precisely synchronized with the height adjustment of the cutting blade 104, ensuring that the combing and cutting actions are always matched. This makes the lawn mowing height consistent, avoids unevenness, and improves the overall aesthetics and flatness of the lawn.

[0028] Based on the above technical solution, the working steps of this solution are summarized as follows: During lawn mowing, the worker can adjust the lawn mowing height as needed by rotating the butterfly column 207 to drive the threaded rod 206 through the threaded transmission within the connecting plate 205. The driven connecting plate 205 can then lift or push the comb plate 202 through the first sliding groove 204, allowing it to flip up or down between the two sets of connecting blocks 105 via the connecting plate 201. During this process, the lifted or pushed comb plate 202 will simultaneously lift or push the L-shaped plate 106 through the second sliding groove 208 in the center. The plate 106 can be lifted or pushed down together with the constriction ring 107 to slide the cutting blade 104 up and down on the outer surface of the T-shaped column 103, thus achieving precise adjustment of the lawn mowing height. After the adjustment is completed, the AC motor 102 can be started to drive the T-shaped column 103 and the cutting blade 104 to rotate at high speed through the output shaft. During the movement of the stepper lawnmower body 1, the inclined comb plate 202 will comb up and straighten the fallen grass stems, making them upright and guiding them into the rotation cutting range of the cutting blade 104. The cutting blade 104 will cut the combed grass stems in one go by the shearing force generated by the high-speed rotation.

[0029] In summary, by combing up and straightening the fallen grass stems before cutting, the problem of missed cuts caused by fallen grass stems is effectively avoided, achieving a uniform and efficient lawn mowing effect.

[0030] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stepper lawnmower with an AC motor, characterized in that, include: The step-type lawnmower body (1) has a connecting cylinder (101) fixedly installed on its upper surface. An AC motor (102) is fixedly installed inside the connecting cylinder (101). The output shaft of the AC motor (102) rotates out from the lower surface of the connecting cylinder (101) to the lower surface of the step-type lawnmower body (1). A T-shaped column (103) is fixedly installed on the lower surface of the output shaft of the AC motor (102). A cutting blade (104) is slidably installed on the outer surface of the T-shaped column (103). Two sets of connecting blocks (105) are fixedly installed at one end of the lower surface of the step-type lawnmower body (1). A grass combing mechanism (2) is rotatably installed between the two sets of connecting blocks (105). The grass combing end of the grass combing mechanism (2) is fitted onto the outer surface of the T-shaped column (103).

2. A stepper lawnmower with an AC motor according to claim 1, characterized in that: The combing mechanism (2) includes a connecting plate (201), which is rotatably installed between two sets of connecting blocks (105). A comb plate (202) is fixedly installed at one end of the connecting plate (201). An insertion port (203) is provided at the center of the comb plate (202), so that the comb plate (202) can be fitted onto the outer surface of the T-shaped column (103) through the insertion port (203).

3. A stepper lawnmower with an AC motor according to claim 2, characterized in that: A first sliding groove (204) is provided at one end of the inner side between two sets of comb teeth of the comb plate (202). A connecting plate (205) is slidably installed between the first sliding grooves (204). A threaded rod (206) is installed in the inner thread of the connecting plate (205). A butterfly column (207) is fixedly installed on the upper surface of the threaded rod (206).

4. A stepper lawnmower with an AC motor according to claim 3, characterized in that: The butterfly column (207) rotates in a damped manner inside the step lawnmower body (1) and rotates out through the upper surface of the step lawnmower body (1).

5. A stepper lawnmower with an AC motor according to claim 2, characterized in that: The connecting plate (201) has a second slide opening (208) in the center. An L-shaped plate (106) is slidably installed in the second slide opening (208). The other end of the L-shaped plate (106) is slidably installed between the inner and outer surfaces of the constriction ring (107). The constriction ring (107) is fixedly installed on the lower surface of the cutting blade (104).

6. A stepper lawnmower with an AC motor according to claim 5, characterized in that: The comb plate (202) is connected to the threaded rod (206) via the connecting plate (205). The rotational motion of the threaded rod (206) is converted into the linear displacement of the comb plate (202) via the connecting plate (205), which simultaneously drives the L-shaped plate (106) to drive the cutting blade (104) to make linear reciprocating motion along the axis of the T-shaped column (103).

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