Grass mowing and brush cutting machine

Abstract

The utility model discloses a grass mowing brush cutter which comprises a connecting rod, a grass mowing head arranged at the lower end of the connecting rod and a handheld rod arranged at the upper end of the connecting rod, a connecting sleeve is arranged on the connecting rod in a sleeved mode, and a supporting rod with the extending direction perpendicular to the extending direction of the connecting rod is arranged on one side of the connecting sleeve. The lower end of the supporting rod is provided with an inverted-U-shaped supporting plate, the two ends of the supporting plate are rotationally connected with rolling wheels abutting against the ground, the side wall of the connecting sleeve is provided with a positioning column with the square section, and the side wall of the upper end of the supporting rod is provided with a positioning sleeve which is arranged on the positioning column in a sleeving mode and also provided with the square section. A shaft hole penetrating through the positioning sleeve is formed in the supporting rod, a connecting shaft penetrating through the shaft hole is arranged on the end face of the positioning column, a limiting disc is arranged at the end, away from the positioning column, of the connecting shaft, and the connecting shaft is sleeved with a connecting spring with one end connected with the limiting disc. A thrust ring which is arranged on the connecting shaft in a sleeving mode and used for abutting against the outer wall of the supporting rod is arranged at the end, away from the limiting disc, of the connecting spring.

Description

Technical Field

[0001] The utility model belongs to the technical field of grass trimmers, in particular to a grass trimmer and brush cutter. Background Art

[0002] Grass cutters are handheld tools used to cut weeds in lawns, gardens, pastures, etc. According to the power source, they can be divided into oil-powered and electric-powered; according to the structure of the power head, they can be divided into front-powered and rear-powered.

[0003] At present, a Chinese patent with publication number CN219165148U and publication date June 13, 2023 discloses a multifunctional lawn mower, including a machine head and a rod group, the machine head including a grass guard cover and an outer shell, the grass guard cover is detachably mounted with a lawn mower head, the lawn mower head is detachably and replaceably equipped with a lawn mower rope and a saw blade, the outer shell is mounted on the grass guard cover, and a locking shaft assembly is arranged in the outer shell; the locking shaft assembly includes a locking member slidably mounted in the outer shell, a motor is mounted in the outer shell, one end of the motor shaft of the motor is rotatably connected to the lawn mower head, and the other end of the motor shaft of the motor is provided with a straight-shaped lock extending outward, and the straight-shaped lock is located in the locking member; when replacing the lawn mower head, the locking member is pushed to engage the locking member with the straight-shaped lock of the motor, thereby effectively ensuring the personal safety of the staff when replacing the tooling parts on the lawn mower head, and by pushing the push-twist gear block to adjust the inclination angle of the rod group on the lawn mower head, it is convenient for the lawn mower staff to find a suitable angle to hold the rod group for lawn mowing, thereby reducing the degree of physical fatigue of the staff.

[0004] This multifunctional lawn mower uses the rollers on the grass guard cover to support it on the ground, thereby reducing the operator's grip burden and facilitating the smooth movement of the machine head on the ground; however, since the rollers are connected to the grass guard cover and the structural strength of the grass guard cover is insufficient, the grass guard cover is prone to bending on the cover surface near the rollers under long-term support, which may eventually damage the grass guard cover structure. Utility Model Content

[0005] The utility model aims to provide a grass trimmer and brush cutter, which is conducive to stably supporting the grass trimmer head.

[0006] The above technical object of the utility model is achieved by the following technical solutions: A grass trimming and brush cutting machine includes a connecting rod, a grass cutting head arranged at the lower end of the connecting rod, and a hand-held rod arranged at the upper end of the connecting rod. A connecting sleeve is sleeved on the connecting rod. One side of the connecting sleeve is provided with a support rod whose extending direction is perpendicular to the extending direction of the connecting rod. The lower end of the support rod is provided with a support plate in an inverted "U" shape. Both ends of the support plate are rotatably connected with rollers that abut against the ground. A positioning column with a square cross-section is arranged on the side wall of the connecting sleeve. A positioning sleeve with a square cross-section and sleeved on the positioning column is arranged on the upper end side wall of the support rod. A shaft hole passing through the positioning sleeve is opened in the support rod. A connecting shaft passing through the shaft hole is arranged on the end face of the positioning column. A limiting disc is arranged at the end of the connecting shaft away from the positioning column. A connecting spring with one end connected to the limiting disc is sleeved on the connecting shaft. A thrust ring sleeved on the connecting shaft and used for abutting against the outer wall of the support rod is arranged at the end of the connecting spring away from the limiting disc.

[0007] A further setting of the utility model is that: The support plate is provided with a card slot in an L shape for the connecting rod to be embedded.

[0008] A further setting of the utility model is that: The inside of the support rod is hollow and open at the lower end face. An adjusting rod embedded in the lower end of the support rod is arranged in the middle of the support plate. A first internal thread sleeve is arranged on the side wall of the lower end of the support rod. A first locking threaded shaft with an end abutting against the outer wall of the adjusting rod is threadedly connected to the first internal thread sleeve.

[0009] A further setting of the utility model is that: A second internal thread sleeve is arranged on the upper side of the connecting sleeve. A second locking threaded shaft with an end abutting against the outer wall of the connecting rod is threadedly connected to the second internal thread sleeve.

[0010] A further setting of the utility model is that: A long groove with an extending direction parallel to the extending direction of the connecting rod is opened on the lower side of the connecting rod. A guide rail embedded in the long groove is arranged on the inner wall of the connecting sleeve.

[0011] A further setting of the utility model is that: A shoulder strap is also arranged on the connecting rod. Mounting sleeves sleeved on the connecting rod are arranged at the ends of the shoulder strap.

[0012] In summary, the utility model has the following beneficial effects:

[0013] 1. When the roller is needed to support the grass trimming head, push the support rod toward the side away from the connecting sleeve, so that the positioning sleeve is separated from the positioning column, and the connecting spring is compressed, and then the support rod can be rotated downward, so that the support rod drives the support plate and the roller to move to the lower side of the connecting rod, and then the support rod is released. Under the elastic restoring force of the connecting spring, the positioning column is embedded in the positioning sleeve. Since the cross-sections of the positioning column and the positioning sleeve are both square, the rotation of the support rod can be positioned. At this time, the grass trimming head can be stably supported by connecting the roller through the connecting sleeve, the support rod and the support plate;

[0014] When the roller needs to be stored, it is only necessary to push the support rod again toward the side away from the connecting sleeve, so that the positioning sleeve is separated from the positioning column and the connecting spring is compressed. Then the support rod can be rotated upward until the support rod drives the support plate and the roller to move to a position parallel to the connecting rod. Then the support rod is released, and the positioning column is embedded in the positioning sleeve under the elastic restoring force of the connecting spring. At this time, the roller can be efficiently stored on the connecting rod.

[0015] 2. When the roller needs to be stored and the support rod is pushed toward the side away from the connecting sleeve, the support plate can move with the support rod, and then the opening position of the slot can be aligned with the position of the connecting rod. After the support rod and the support plate are rotated upward, the connecting rod can be embedded in the opening of the slot; at the same time, after the support rod is loosened and the support rod moves toward the side close to the connecting sleeve, the support plate can move with the support rod, and then the connecting rod can be embedded in the inner position of the slot, so that the slot supports the connecting rod, which is conducive to the stable storage of the roller on the connecting rod;

[0016] 3. When the distance between the roller and the connecting rod needs to be adjusted, loosen the first locking threaded shaft, then pull the adjusting rod in the lower end of the support rod until it is pulled to a suitable distance, and then tighten the first locking threaded shaft to complete the adjustment of the distance between the roller and the connecting rod;

[0017] 4. When the position of the connecting sleeve on the connecting rod needs to be adjusted, loosen the second locking threaded shaft, and then move the connecting sleeve on the connecting rod until it moves to a suitable position, and then tighten the second locking threaded shaft to complete the adjustment of the position of the connecting sleeve on the connecting rod;

[0018] 5. The connecting sleeve is embedded in the long groove on the lower side of the connecting rod by means of a guide rail, and the circumferential rotation connection of the connecting sleeve can be limited at this time, which is beneficial to the circumferential stability of the connecting sleeve on the connecting rod;

[0019] 6. When holding the hand grip, use the strap to carry it on the operator's shoulders, which helps to reduce the burden on the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a partial enlarged view of the connection relationship between the connecting rod, the connecting sleeve, the supporting rod and the supporting plate in the utility model;

[0023] Figure 3 It is a cross-sectional view of the connection relationship structure between the connecting rod, the connecting sleeve, the supporting rod and the supporting plate in the utility model;

[0024] Figure 4 It is a plan view of the connection relationship between the connecting rod, the connecting sleeve, the supporting rod and the supporting plate in the utility model. At this time, the supporting rod and the supporting plate are rotated upward, and the connecting rod is embedded in the inner side of the slot.

[0025] In the figure, 1. connecting rod; 11. long groove; 2. grass trimmer head; 3. hand grip rod; 4. connecting sleeve; 41. positioning column; 42. connecting shaft; 421. limit plate; 422. connecting spring; 423. thrust ring; 43. second internal threaded sleeve; 431. second locking threaded shaft; 44. guide rail; 5. support rod; 51. positioning sleeve; 52. shaft hole; 53. first internal threaded sleeve; 531. first locking threaded shaft; 6. support plate; 61. roller; 62. slot; 63. adjustment rod; 7. shoulder strap; 71. installation sleeve. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of 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.

[0027] A grass cutting and brush cutting machine, referring to Figure 1 The grass trimmer and brush cutter comprises a connecting rod 1, a grass trimmer head 2, and a hand grip rod 3, wherein the grass trimmer head 2 is installed at the lower end of the connecting rod 1, and the grass trimmer head 2 has a motor and a blade, while the hand grip rod 3 is installed at the upper end of the connecting rod 1, and the hand grip rod 3 has a start switch and a battery pack, and the motor in the grass trimmer head 2 can be powered on and rotated by pressing the start switch.

[0028] Reference Figure 1, Figure 2 , Figure 3 , a connecting sleeve 4 is sleeved on the connecting rod 1, and a second internal thread sleeve 43 is integrally provided on the upper side of the connecting sleeve 4. A second locking threaded shaft 431 with its end abutting against the outer wall of the connecting rod 1 is threadedly connected to the second internal thread sleeve 43. At the same time, a long groove 11 with an extending direction parallel to the extending direction of the connecting rod 1 is formed on the lower side of the connecting rod 1, and a guide rail 44 embedded in the long groove 11 is integrally provided on the inner wall of the connecting sleeve 4. A shoulder strap 7 is further provided on the connecting rod 1, and the end of the shoulder strap 7 is bolted to an installation sleeve 71 sleeved on the connecting rod 1.

[0029] Referring to Figure 1 , Figure 2 , Figure 3 , a support rod 5 with an extending direction perpendicular to the extending direction of the connecting rod 1 is provided on one side of the connecting sleeve 4. The lower end of the support rod 5 is provided with a support plate 6 in an inverted "U" shape. Both ends of the support plate 6 are rotatably connected by a shaft and a bearing to a roller 61 abutting against the ground. At the same time, the inside of the support rod 5 is hollow and open at the lower end surface. A regulating rod 63 embedded in the lower end of the support rod 5 is welded to the middle of the support plate 6. A first internal thread sleeve 53 is integrally provided on the side wall of the lower end of the support rod 5, and a first locking threaded shaft 531 with its end abutting against the outer wall of the regulating rod 63 is threadedly connected to the first internal thread sleeve 53.

[0030] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , a positioning column 41 with a square cross-section is welded on the side wall of the connecting sleeve 4, and a positioning sleeve 51 with a square cross-section and sleeved on the positioning column 41 is welded on the upper side wall of the support rod 5. A shaft hole 52 passing through the positioning sleeve 51 is formed in the support rod 5, and a connecting shaft 42 passing through the shaft hole 52 is welded on the end surface of the positioning column 41. At the same time, a limiting disc 421 is integrally provided at one end of the connecting shaft 42 away from the positioning column 41. A connecting spring 422 with one end welded to the limiting disc 421 is sleeved on the connecting shaft 42. A thrust ring 423 sleeved on the connecting shaft 42 and used for abutting against the outer wall of the support rod 5 is welded at one end of the connecting spring 422 away from the limiting disc 421. An L-shaped card slot 62 for the connecting rod 1 to be embedded is formed on the support plate 6.

[0031] Principle: When the roller 61 is needed to support the grass trimming head 2, the support rod 5 is pushed toward the side away from the connecting sleeve 4, so that the positioning sleeve 51 is separated from the positioning column 41, and the connecting spring 422 is compressed, and then the support rod 5 can be rotated downward, so that the support rod 5 drives the support plate 6 and the roller 61 to move to the lower side of the connecting rod 1, and then the support rod 5 is released. Under the elastic restoring force of the connecting spring 422, the positioning column 41 is embedded in the positioning sleeve 51. Since the cross-sections of the positioning column 41 and the positioning sleeve 51 are both square, the rotation of the support rod 5 can be positioned. At this time, after the roller 61 is connected through the connecting sleeve 4, the support rod 5 and the support plate 6, the grass trimming head 2 can be stably supported;

[0032] When it is necessary to store the roller 61, it is only necessary to push the support rod 5 again toward the side away from the connecting sleeve 4, so that the positioning sleeve 51 is separated from the positioning column 41, and the connecting spring 422 is compressed. Then the support rod 5 can be rotated upward until the support rod 5 drives the support plate 6 and the roller 61 to move to a position parallel to the connecting rod 1. Then the support rod 5 is released. Under the action of the elastic restoring force of the connecting spring 422, the positioning column 41 is embedded in the positioning sleeve 51, and the connecting rod 1 is embedded in the slot 62. At this time, the roller 61 can be efficiently stored on the connecting rod 1.

Claims

1. A grass trimmer and brush cutter, comprising a connecting rod (1), a grass trimmer head (2) arranged at the lower end of the connecting rod (1), and a hand grip rod (3) arranged at the upper end of the connecting rod (1), characterized in that: A connecting sleeve (4) is sleeved on the connecting rod (1). One side of the connecting sleeve (4) is provided with a support rod (5) whose extending direction is perpendicular to the extending direction of the connecting rod (1). The lower end of the support rod (5) is provided with a support plate (6) in an inverted "U" shape. Both ends of the support plate (6) are rotatably connected with rollers (61) that abut against the ground. A positioning column (41) with a square cross-section is arranged on the side wall of the connecting sleeve (4). A positioning sleeve (51) that is sleeved on the positioning column (41) and also has a square cross-section is arranged on the upper end side wall of the support rod (5). A shaft hole (52) passing through the positioning sleeve (51) is formed in the support rod (5). A connecting shaft (42) passing through the shaft hole (52) is arranged on the end face of the positioning column (41). A limiting disc (421) is arranged at one end of the connecting shaft (42) away from the positioning column (41). A connecting spring (422) with one end connected to the limiting disc (421) is sleeved on the connecting shaft (42). A thrust ring (423) that is sleeved on the connecting shaft (42) and is used to abut tightly against the outer wall of the support rod (5) is arranged at one end of the connecting spring (422) away from the limiting disc (421).

2. A grass cutting and brush cutting machine according to claim 1, characterized in that: A card slot (62) in an L shape for the connecting rod (1) to be embedded is formed in the support plate (6).

3. The grass cutting and brush cutting machine according to claim 1, characterized in that: The interior of the support rod (5) is hollow and open at the lower end face. An adjusting rod (63) embedded in the lower end of the support rod (5) is arranged in the middle of the support plate (6). A first internal thread sleeve (53) is arranged on the side wall of the lower end of the support rod (5). A first locking threaded shaft (531) whose end abuts tightly against the outer wall of the adjusting rod (63) is threadedly connected to the first internal thread sleeve (53).

4. The grass cutting and brush cutting machine according to claim 1, characterized in that: A second internal thread sleeve (43) is arranged on the upper side of the connecting sleeve (4). A second locking threaded shaft (431) whose end abuts tightly against the outer wall of the connecting rod (1) is threadedly connected to the second internal thread sleeve (43).

5. The grass trimmer and brush cutter according to claim 4, characterized in that: A long slot (11) whose extending direction is parallel to the extending direction of the connecting rod (1) is formed on the lower side of the connecting rod (1). A guide rail (44) embedded in the long slot (11) is arranged on the inner wall of the connecting sleeve (4).

6. The grass cutting and brush cutting machine according to claim 1, characterized in that: A shoulder strap (7) is further arranged on the connecting rod (1). An installation sleeve (71) sleeved on the connecting rod (1) is arranged at the end of the shoulder strap (7).

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