High-wear-resistance grass mowing head

Abstract

The utility model belongs to the field of grass trimming heads, and particularly relates to a high-wear-resistance grass trimming head which comprises a driving motor, a cover plate and a grass trimming rope, a mounting disc is arranged on the driving motor, a convex block is fixed on the outer wall of the mounting disc, an inner cavity is formed in the convex block, two wiring grooves are formed in the outer wall of the convex block, and the inner cavity is communicated with the inner cavity. Positioning blocks are arranged on the two sides of the outer wall of the protruding block, clamping grooves are formed in the positioning blocks, through holes are formed in the outer walls of the positioning blocks and communicate with the clamping grooves, a guide plate is arranged in the inner cavity, and positioning columns are arranged at the positions, located at the two ends of the guide plate, in the inner cavity correspondingly. By means of the protruding block, the guide plate, the positioning column and the cover plate, the grass trimming rope does not need to be subjected to winding displacement treatment of a groove body in the mounting disc in the mounting and replacing process, the mode of operation outside the mounting disc is adopted, the operation process of overall adjustment is simplified, an operator can rapidly adjust the position of the grass trimming rope without disassembling the mounting disc, and therefore the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of grass trimmer heads, in particular to a highly wear-resistant grass trimmer head. Background Art

[0002] A lawn mower is a common garden tool, which is mainly divided into hand-held lawn mowers and walk-behind lawn mowers. Its main principle is to use a motor or engine to drive its mowing head to rotate at high speed. When the mowing head rotates at high speed, the mowing rope also rotates at high speed, thereby achieving the cutting of weeds. China has authorized a utility model patent (Announcement No.: CN219893862U) to disclose a mowing head with adjustable mowing height. Since each mounting disk is provided with a mounting position for two mowing ropes, it is designed with multiple stacked mounting disks, and the height of the mounting position on each mounting disk is different from the end cover. Therefore, when the mowing height of the mowing head needs to be adjusted, it only needs to pass the two mowing ropes through the mounting positions of the corresponding heights to achieve the adjustment of the mowing height, which is easy to operate.

[0003] However, the above device still has some shortcomings when in use: specifically, in the existing technology, multiple mounting plates can meet the installation requirements of mowing ropes at different heights, but during the installation process, the mowing rope needs to pass through the first trough body, the second trough body and the third trough body, etc. arranged inside the mounting plate in sequence. Since the trough body is located inside the mounting plate, when the position of the mowing rope needs to be replaced or adjusted, the operator must first remove the remaining mounting plates. This process is not only cumbersome but also time-consuming. Therefore, a highly wear-resistant mowing head is proposed to address the above problems. Utility Model Content

[0004] In order to overcome the problem in the prior art that when the position of the mowing rope needs to be replaced or adjusted, the operator must first remove the remaining installation plates, which is time-consuming, the utility model provides a highly wear-resistant mowing head.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a highly wear-resistant grass trimmer head, including a driving motor, a cover plate and a grass trimming rope, the driving motor is provided with a mounting plate, the outer wall of the mounting plate is fixed with a protrusion, the protrusion has an inner cavity, the outer wall of the protrusion is provided with a wiring groove, and there are two wiring grooves.

[0006] Positioning blocks are provided on both sides of the outer wall of the protrusion. The positioning blocks are provided with a clamping slot. A through hole is opened on the outer wall of the positioning block, and the through hole is communicated with the clamping slot.

[0007] A guide plate is provided in the inner cavity, and positioning columns are respectively provided at both ends of the guide plate in the inner cavity.

[0008] A wire clamping groove is provided on the top of the positioning column, and arc-shaped plates are provided on both sides of the wire clamping groove. The mowing rope inserted into the wire clamping groove is limited by the two arc-shaped plates.

[0009] The cover plate is provided with a clamping plate, and there are two clamping plates. When the cover plate cooperates with the protrusion, the clamping plate cooperates with the wiring groove to interfere with and limit the mowing rope.

[0010] Insert blocks are provided on both sides of the outer wall of the cover plate. A limiting piece is provided on the insert block. When the cover plate is matched with the protrusion, the insert block is plugged into the card slot and the limiting piece passes through the through hole.

[0011] Preferably, the guide plate is in an "S" shape, there are two guide plates, and there is a channel between the two guide plates for routing the mowing rope.

[0012] Preferably, grooves are provided on both sides of the inner wall of the wire clamping slot, a first spring is provided in the groove, and one end of the first spring is fixedly connected to an arc-shaped plate.

[0013] Preferably, the end surface of the arc-shaped plate is in an arc-shaped structure, and the arc surface of the arc-shaped plate is provided with anti-slip grooves for increasing the friction when in contact with the mowing rope.

[0014] Preferably, the wire-holding grooves on the two positioning posts are oriented in the same direction as the wire-routing grooves.

[0015] Preferably, the insert has an assembly groove, the limiting member includes a second spring and a protruding rod, the second spring is fixed in the assembly groove, one end of the second spring is fixed to the protruding rod, and the end of the protruding rod away from the second spring is hemispherical.

[0016] Preferably, one side of the inner wall of the slot is provided with an arc-shaped groove, and the arc-shaped groove cooperates with the protruding rod.

[0017] Preferably, the protrusion has a slot, and the bottom of the cover is provided with an inserting plate that matches the slot.

[0018] The utility model is beneficial in that:

[0019] 1. The utility model adopts the structural design of the protrusion, guide plate, positioning column and cover plate, so that the mowing rope no longer needs to pass through the wiring processing of the internal groove of the installation plate during the installation and replacement process. The operation method is operated outside the installation plate, which simplifies the overall adjustment operation process. The operator can quickly adjust the position of the mowing rope without removing the installation plate, thereby improving work efficiency.

[0020] 2. The present invention adopts the structural design of the guide plate, positioning column, wire groove and arc plate, which can effectively arrange and position the mowing rope after it is assembled. At the same time, through the cooperation between the cover plate and the protrusion, the mowing rope is further limited, thereby improving the stability of the mowing rope during high-speed operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a structural diagram of the grass trimming head;

[0023] Figure 2 Schematic diagram of the assembly structure of the bump;

[0024] Figure 3 Schematic diagram of the assembly structure of the bump and the cover;

[0025] Figure 4 Schematic diagram of the assembly structure of the positioning column;

[0026] Figure 5 for Figure 3 Schematic diagram of the locally enlarged structure at point A in the middle.

[0027] In the figure: 1. Drive motor; 2. Mounting plate; 3. Bump; 301. Inner cavity; 302. Wire routing groove; 4. Guide plate; 5. Positioning column; 501. Wire clamping groove; 502. Groove; 503. First spring; 504. Arc plate; 6. Cover plate; 601. Clamping plate; 602. Insert block; 603. Limiting piece; 7. Positioning block; 701. Clamping groove; 702. Through hole; 8. Mowing rope. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The following is combined with Figure 1 —5 further details of this application,

[0030] The present application discloses a highly wear-resistant grass trimmer head. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 A highly wear-resistant grass trimming head includes a driving motor 1, a cover plate 6 and a grass trimming rope 8. The grass trimming rope 8 is made of nylon. The nylon grass trimming rope 8 has stronger wear resistance, which ensures the service life of the grass trimming rope 8. A mounting plate 2 is provided on the driving motor 1. A protrusion 3 is fixed to the outer wall of the mounting plate 2. The protrusion 3 has an inner cavity 301. The outer wall of the protrusion 3 is provided with a wiring groove 302, and there are two wiring grooves 302.

[0031] There are multiple mounting plates 2 , which are stacked and inserted on the rotating shaft of the driving motor 1 . The mounting method of the mounting plates 2 is the same as that of the prior art (Announcement No.: CN219893862U), and will not be elaborated on here.

[0032] Among them, an end cover is provided on the end of the rotating shaft of the driving motor 1 away from the driving motor 1, which is not shown in the figure. The end cover is detachably connected to the rotating shaft, and the end cover abuts against a mounting plate 2 away from the motor. The assembly method of the end cover is the same as that of (Announcement No.: CN219893862U), which will not be elaborated here.

[0033] Positioning blocks 7 are provided on both sides of the outer wall of the protrusion 3 . The positioning blocks 7 have a locking groove 701 . A through hole 702 is opened on the outer wall of the positioning block 7 . The through hole 702 is communicated with the locking groove 701 .

[0034] A guide plate 4 is provided in the inner cavity 301 , and positioning posts 5 are provided at both ends of the guide plate 4 in the inner cavity 301 .

[0035] Among them, the guide plate 4 is in an "S" shape, there are two guide plates 4, and there is a channel between the two guide plates 4 for routing the mowing rope 8.

[0036] Specifically, after the mowing rope 8 passes through the wiring groove 302, it is arranged through the channel, and the channel also serves as a limit for the mowing rope 8.

[0037] Correspondingly, when placing the mowing rope 8, the "S"-shaped channel can increase the friction with the mowing rope 8 at multiple raised parts of the channel, thereby improving the stability of the installation of the mowing rope 8.

[0038] A wire-holding groove 501 is provided on the top of the positioning column 5 , and arc-shaped plates 504 are provided on both sides of the wire-holding groove 501 . The two arc-shaped plates 504 are used to limit the mowing rope 8 inserted into the wire-holding groove 501 .

[0039] The wire-holding grooves 501 on the two positioning posts 5 have the same orientation as the wire-routing grooves 302 .

[0040] The cover plate 6 is provided with two clamping plates 601 . When the cover plate 6 cooperates with the protrusion 3 , the clamping plates 601 cooperate with the wiring groove 302 to interfere with and limit the mowing rope 8 .

[0041] When the cover plate 6 is matched with the protrusion 3 , the bottom of the cover plate 6 is fitted with the surface of the positioning column 5 , limiting the position of the mowing rope 8 in the wire clamping groove 501 .

[0042] Insert blocks 602 are provided on both sides of the outer wall of the cover plate 6. Specifically, the insert block 602 has an assembly groove. The limiting member 603 includes a second spring and a protruding rod. The second spring is fixed in the assembly groove. One end of the second spring is fixed to the protruding rod, and the end of the protruding rod away from the second spring is hemispherical.

[0043] A limiting member 603 is provided on the inserting block 602 . When the cover plate 6 is engaged with the protrusion 3 , the inserting block 602 is plugged into and engaged with the slot 701 , and the limiting member 603 passes through the through hole 702 .

[0044] The protrusion 3 has a slot, and the bottom of the cover 6 is provided with an inserting plate that matches the slot.

[0045] Reference Figure 4 Grooves 502 are provided on both sides of the inner wall of the wire clamping slot 501 , a first spring 503 is provided in the groove 502 , and one end of the first spring 503 is fixedly connected to an arc-shaped plate 504 .

[0046] Among them, after the mowing rope 8 passes through the wiring groove 302, the mowing rope 8 is clamped into the wire clamping groove 501. During this process, under the action of the first spring 503, the two arc-shaped plates 504 are tightly pressed against the mowing rope 8 to ensure the stability of the mowing rope 8.

[0047] Reference Figure 4 The end face of the arc plate 504 is an arc-shaped structure, and the arc surface of the arc plate 504 is provided with anti-slip grooves for increasing the friction when in contact with the mowing rope 8.

[0048] Among them, the end surface of the arc plate 504 is an arc-shaped structure, which is convenient for cooperating with the mowing rope 8 to complete the positioning operation. At the same time, the design of the anti-slip pattern further enhances the anti-slip property and improves the positioning effect.

[0049] Reference Figure 5 One side of the inner wall of the slot 701 has an arc-shaped groove, which cooperates with the protruding rod.

[0050] The arc groove is provided to facilitate the protruding rod to slide into the clamping groove 701 along the arc groove, thereby completing the assembly of the cover plate 6 and the positioning block 7 .

[0051] Working principle: When the position of the mowing rope 8 needs to be replaced, first remove the cover plate 6 on the protrusion 3 on which the mowing rope 8 is installed, and at the same time press the limiter 603, that is, squeeze the protruding rod, so that the protruding rod squeezes the second spring, causing the protruding rod to shrink into the assembly groove, and then lift the cover plate 6 upward to complete the disassembly, and then remove the mowing rope 8 from the wire clamping groove 501, and then reinstall the cover plate 6.

[0052] Then, remove the cover plate 6 on the corresponding mounting plate 2. The disassembly process is the same as above. Then, clamp one end of the mowing rope 8 on one of the clamping grooves 501. During this process, as the mowing rope 8 is clamped into the clamping groove 501 from top to bottom, the arc plate 504 is squeezed, causing the arc plate 504 to squeeze the first spring 503. Under the action of the first spring 503, the two arc plates 504 clamp the mowing rope 8 in the clamping groove 501. Then, the mowing rope 8 is moved along the two guide plates 4 The formed channel is arranged in an "S" shape, and then the mowing rope 8 is clamped on another positioning column 5, and the two ends of the mowing rope 8 are respectively passed through the wiring groove 302, and then the cover plate 6 is aligned with the protrusion 3, so that the insertion block 602 is inserted into the card slot 701. During this process, when the protruding rod moves to the through hole 702 in the card slot 701, the second spring resets the protruding rod to extend from the through hole 702, completing the positioning of the card plate 601, that is, realizing the connection between the cover plate 6 and the protrusion 3.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A highly wear-resistant mowing head, comprising a driving motor (1) and a mowing rope (8), wherein a mounting plate (2) is provided on the driving motor (1), and characterized in that: A protrusion (3) is fixed on the outer wall of the mounting plate (2), the protrusion (3) has an inner cavity (301), and a wiring groove (302) is opened on the outer wall of the protrusion (3), and there are two wiring grooves (302); Positioning blocks (7) are provided on both sides of the outer wall of the protrusion (3), the positioning blocks (7) have a card slot (701), and the outer wall of the positioning block (7) is provided with a through hole (702), and the through hole (702) is communicated with the card slot (701); A guide plate (4) is provided in the inner cavity (301), and positioning posts (5) are provided at both ends of the guide plate (4) in the inner cavity (301); A wire-holding groove (501) is provided on the top of the positioning column (5), and arc-shaped plates (504) are provided on both sides of the wire-holding groove (501). The two arc-shaped plates (504) are used to limit the position of the mowing rope (8) inserted into the wire-holding groove (501); It also includes a cover plate (6), on which a clamping plate (601) is provided. There are two clamping plates (601). When the cover plate (6) cooperates with the protrusion (3), the clamping plate (601) cooperates with the wiring groove (302) to limit the position of the mowing rope (8). Insert blocks (602) are provided on both sides of the outer wall of the cover plate (6), and a limiting member (603) is provided on the insert block (602). When the cover plate (6) is engaged with the protrusion (3), the insert block (602) is plugged into the slot (701), and the limiting member (603) passes through the through hole (702).

2. The highly wear-resistant grass trimmer head according to claim 1, characterized in that: The guide plate (4) is in an "S" shape. There are two guide plates (4). A passage is provided between the two guide plates (4) for routing the grass rope (8).

3. The highly wear-resistant grass trimmer head according to claim 1, characterized in that: Grooves (502) are provided on both sides of the inner wall of the wire clamping slot (501), a first spring (503) is provided in the groove (502), and one end of the first spring (503) is fixedly connected to an arc-shaped plate (504).

4. The highly wear-resistant grass trimmer head according to claim 3, characterized in that: The end surface of the arc plate (504) is in an arc-shaped structure, and the arc surface of the arc plate (504) is provided with anti-slip grooves for increasing the friction force when in contact with the mowing rope (8).

5. The highly wear-resistant grass trimmer head according to claim 1, characterized in that: The wire-holding grooves (501) on the two positioning posts (5) are oriented in the same direction as the wire-routing grooves (302).

6. The highly wear-resistant grass trimmer head according to claim 1, characterized in that: The insert (602) has an assembly groove, and the limiting member (603) includes a second spring and a protruding rod. The second spring is fixed in the assembly groove, one end of the second spring is fixed to the protruding rod, and the end of the protruding rod away from the second spring is hemispherical.

7. The highly wear-resistant grass trimmer head according to claim 1, characterized in that: One side of the inner wall of the clamping slot (701) is provided with an arc-shaped groove, and the arc-shaped groove cooperates with the protruding rod.

8. The highly wear-resistant grass trimmer head according to claim 1, characterized in that: The protrusion (3) is provided with a slot, and the bottom of the cover plate (6) is provided with an inserting plate that matches the slot.

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