Hand-held backpack type cutting and irrigating equipment
Through the hand-held back-loading design and auxiliary wheel roller configuration, the problems of high physical strength requirements and engine vibration of the brush cutter are solved, and convenient operation and cutting efficiency are improved.
Patent Information
- Application Number
- CN202420213328.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-01-29
AI Technical Summary
The existing brush cutting machines have high physical strength requirements for operators during long-term use, and during the cutting process, it is easy to cause engine vibration due to reaction forces, affecting the normal operation of the equipment.
A hand-held back-loading cutting device is designed, using soft shaft transmission and strap configuration, where the operator can carry the engine, cutting by pushing the bracket movement, auxiliary wheels and rollers are designed to ensure the blade is parallel to the ground, baffle and buffer plate Prevent splashes from hurting people.
It reduces the labor intensity of operators, reduces engine vibration, improves cutting efficiency and safety, and ensures the normal working condition and operation convenience of the equipment.
Smart Images
Figure CN222322229U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of brush cutters, and in particular to a hand-held backpack brush cutter device. Background Art
[0002] Brush cutters are mainly used to cut weeds on the sides of roads, orchards, hillsides or low shrubs on uneven ground. Currently, brush cutters are divided into electric and internal combustion power according to different power sources, and into flexible shaft drive and straight rod drive according to different transmission modes.
[0003] The brush cutter includes a connecting rod, an engine, a blade disc and a handle. The engine and the blade disc are respectively arranged at both ends of the connecting rod, and the engine and the blade disc are connected by a wire. The handle is arranged on the connecting rod. When cutting the bushes, the operator holds the handle, then lifts the connecting rod, and aligns the blade disc with the required cutting position. The engine drives the blade disc to rotate, thereby completing the cutting of the bushes.
[0004] When a brush cutter is in use, it is mainly supported by a person, and when working for a long time, a high level of physical strength is required from the user. Utility Model Content
[0005] In order to make the use of a brush cutter easier, the present application provides a hand-held backpack brush cutter device.
[0006] The hand-held backpack brush cutter provided in this application adopts the following technical solution:
[0007] A hand-held backpack brush cutter comprises a cutting assembly, wherein the cutting assembly comprises a working rod, a cutter head arranged at one end of the working rod and an engine arranged at the other end of the working rod, the cutter head comprises a connecting shaft rotatably arranged on the working rod and a blade arranged on the connecting shaft, the connecting shaft is transmission-connected to the engine, a bracket is arranged on the working rod, and a roller is arranged on the bracket.
[0008] By adopting the above technical solution, the operator can carry out the brush cutting operation by pushing the bracket to move, and there is no need to lift the working rod during the operation, which is more labor-saving and makes the operation of the brush cutting operation more convenient.
[0009] Optionally, a flexible shaft transmission is provided between the engine and the connecting shaft, and a shoulder strap is provided on the engine.
[0010] By adopting the above technical solution, during brush cutting operations, the operator can carry the engine on his back, so the reaction force of the cut target on the working rod is not easy to act directly on the engine, which helps to ensure the normal operation of the engine.
[0011] Optionally, a support rod is provided on the bracket, and one end of the support rod away from the bracket is rotatably connected to an auxiliary wheel.
[0012] By adopting the above technical solution, when the auxiliary wheel and the roller are in contact with the ground, the cutter head is tilted and the brush cutter is in a non-working state. Therefore, the support rod and the auxiliary wheel can support the brush cutter to prevent the brush cutter from directly falling to the ground after losing the operator's hand support.
[0013] Optionally, when the auxiliary wheel and the roller are both against the ground, the rotation axis of the connecting shaft is perpendicular to the ground.
[0014] By adopting the above technical solution, when the auxiliary wheel and the roller are both in contact with the ground, the brush cutter is in working state. At this time, the rotation axis of the connecting shaft is perpendicular to the ground, and the blade is parallel to the ground, which helps to ensure the cutting effect of the bushes during the rotation of the blade.
[0015] Optionally, the support rod is rotatably arranged on the bracket, and a torsion spring is connected between the support rod and the bracket, and the torsion spring causes the support rod to have a tendency to rotate toward a side close to the roller.
[0016] By adopting the above technical solution, when an obstacle is encountered in front of the blade, the end of the working rod away from the blade can be pressed downward, so that the blade is tilted, thereby facilitating the passage over the obstacle; in the process of pressing the working rod downward, the support rod and the auxiliary wheel rotate to the side away from the roller, and after passing the obstacle, the support rod and the auxiliary wheel rotate to the side close to the roller, and the torsion spring can reset the support rod. Since the roller is always in contact with the ground during this process, the process of pressing the working rod down and avoiding the obstacle is more labor-saving.
[0017] Optionally, a baffle is provided on the working rod at one end close to the blade, and the radius of the baffle is smaller than the length of the blade.
[0018] By adopting the above technical solution, the baffle plate can block the cut branches, preventing a large amount of broken branches from falling directly onto the rotating blade and affecting the cutting efficiency of the blade.
[0019] Optionally, a baffle is provided at one end of the working rod close to the blade.
[0020] By adopting the above technical solution, the baffle can block the weeds or broken branches that are splashed during the mowing process, thereby reducing the possibility of injury.
[0021] Optionally, the baffle is arranged in an arc shape.
[0022] By adopting the above technical solution, the arc-shaped baffle has a larger shielding area, thus providing a better protective effect.
[0023] Optionally, a buffer plate is slidably provided on one side of the baffle plate close to the blade, and a spring is connected between the buffer plate and the baffle plate.
[0024] By adopting the above technical solution, the flying weeds or branches can firstly counteract the buffer plate, and the spring can play a shock-absorbing role, thereby reducing the impact of the flying debris on the buffer plate, thus helping to extend the service life of the buffer plate and the baffle.
[0025] In summary, the present application includes at least one of the following beneficial technical effects:
[0026] 1. During the brush cutting process, the operator only needs to start the engine and then push the bracket to move, so the operation of the brush cutter is simpler and more labor-saving, which helps to ensure work efficiency.
[0027] 2. The setting of the auxiliary wheel helps to ensure the position of the blade so that the blade and the ground are parallel, thereby ensuring the cutting effect of the shrubs.
[0028] 3. The baffle can block the flying debris during the cutting and brushing process, thereby reducing the possibility of injury. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;
[0030] Figure 2 is a front view of Example 1 of the present application;
[0031] Figure 3 It is a schematic diagram of the structure of the baffle and buffer plate in Example 1 of the present application;
[0032] Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application;
[0033] Figure 5 It is a front view of Example 2 of the present application.
[0034] Attached figures: 1. working rod; 2. cutter head; 21. connecting shaft; 22. blade; 3. engine; 31. shoulder strap; 4. bracket; 41. rotating rod; 411. roller; 42. handle; 421. throttle; 43. block; 5. support rod; 51. auxiliary wheel; 6. torsion spring; 7. baffle plate; 8. baffle plate; 9. buffer plate; 91. guide rod; 10. spring; 11. transmission shaft. DETAILED DESCRIPTION
[0035] The present application is further described in detail below in conjunction with the accompanying drawings.
[0036] Example 1
[0037] The present application embodiment discloses a hand-held backpack brush cutting equipment. Figure 1The hand-held backpack brush cutter device includes a bracket 4 and a cutting assembly arranged on the bracket 4. The bottom of the bracket 4 is rotatably connected to a rotating rod 41, and both ends of the rotating rod 41 are coaxially fixedly connected to rollers 411, so that it is easy to move the bracket 4. The top of the bracket 4 is fixedly connected to a handle 42, so that it is easy to hold.
[0038] The cutting assembly includes a working rod 1, a cutter head 2 and an engine 3. The working rod 1 is fixedly connected to a bracket 4. The cutter head 2 includes a connecting shaft 21 and a blade 22. The connecting shaft 21 is rotatably arranged around its own axis at one end of the working rod 1, and the blade 22 is fixedly connected to one end of the connecting shaft 21; there are multiple blades 22, which are arranged in a circular array, and the surface of the blade 22 is perpendicular to the axis of the connecting shaft 21. The engine 3 is arranged at one end of the working rod 1 away from the cutter head 2, and the engine 3 is connected to the connecting shaft 21 by transmission. During the brush cutting operation, the operator holds the handle 42 and pushes the bracket 4 to move, and the bracket 4 drives the working rod 1 and the cutter head 2 to move; after the engine 3 is started, it can drive the connecting shaft 21 to rotate, and the connecting shaft 21 drives the blade 22 to rotate, thereby cutting the bushes on the moving path of the blade 22.
[0039] Among them, there is a flexible shaft transmission between the engine 3 and the connecting shaft 21; a transmission shaft 11 is connected between the engine 3 and the connecting shaft 21, and the transmission shaft 11 is bendable; the working rod 1 is a hollow rod, and a part of the transmission shaft 11 is located inside the working rod 1; and a shoulder strap 31 is also provided on the engine 3. Therefore, during the brush cutting process, the operator can carry the engine 3 on his back, thereby reducing the impact of the vibration caused by the reaction force during the brush cutting process on the engine 3, which is conducive to the normal operation of the engine 3. A throttle 421 is provided on the handle 42, and the throttle 421 is connected to the engine 3, so that it is convenient to control the rotation speed of the blade 22 through the throttle 421, thereby controlling the working intensity of the brush cutter.
[0040] Reference Figure 2 The support rod 5 is also fixedly connected to the bracket 4. The end of the support rod 5 away from the bracket 4 is rotatably connected to an auxiliary wheel 51. The diameter of the auxiliary wheel 51 is smaller than the diameter of the roller 411. When cutting and brushing, the blade 22 is parallel to the ground, the roller 411 is against the ground, and the auxiliary wheel 51 is above the ground; in the non-working state, the auxiliary wheel 51 and the roller 411 are against the ground, and the blade 22 is tilted; therefore, the support rod 5 and the auxiliary wheel 51 mainly support the bracket 4 to prevent the bracket 4 from falling to the ground after losing the support of the operator.
[0041] The end of the working rod 1 close to the blade 22 is also fixedly connected with a baffle 7, which is in the shape of a disc and is coaxially arranged with the connecting shaft 21, and the baffle 7 is located at the end of the connecting shaft 21 away from the blade 22. The radius of the baffle 7 is smaller than the length of the blade 22. Therefore, during the mowing process, the baffle 7 can block the cut branches to prevent the branches from falling directly onto the blade 22 and affecting the cutting efficiency of the blade 22.
[0042] Reference Figure 3 The end of the working rod 1 close to the cutter head 2 is also fixedly connected with a baffle 8, which is an arc-shaped plate, and the baffle 8 is bent toward the side close to the cutter head 2, so that the baffle 8 can block the weeds or branches splashed during the mowing process, thereby reducing the possibility of the splashing debris causing damage to the operator.
[0043] Furthermore, a buffer plate 9 is provided on the side of the baffle plate 8 close to the cutter head 2. The buffer plate 9 is also an arc-shaped plate. The buffer plate 9 and the baffle plate 8 are arranged at intervals. A guide rod 91 is fixedly connected to the buffer plate 9. The guide rod 91 is parallel to the working rod 1. A guide hole is provided on the baffle plate 8. The guide rod 91 is slidably inserted into the guide hole, so that the buffer plate 9 is slidably arranged on the baffle plate 8. A spring 10 is connected between one end of the guide rod 91 passing through the guide hole and the baffle plate 8. When the fragments splashed during the cutting and brushing process fall on the buffer plate 9, if the impact caused by the fragments is large, the buffer plate 9 can slide to the side close to the baffle plate 8, so that the spring 10 is compressed, thereby absorbing part of the energy and reducing the impact, which helps to ensure the service life of the buffer plate 9 and the baffle plate 8.
[0044] The implementation principle of Example 1 is: carry the engine 3 on the back, then hold the handle 42 with both hands, adjust the state of the working rod 1 so that the blade 22 is parallel to the ground; then start the engine 3 and push the bracket 4 to move. After the engine 3 is started, the connecting shaft 21 can be driven to rotate through the transmission shaft 11, and the connecting shaft 21 drives the blade 22 to rotate, thereby cutting the bushes on the moving path of the blade 22.
[0045] Example 2
[0046] Reference Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that, in this embodiment, when the brush cutter is in working state, the auxiliary wheel 51 and the roller 411 are both against the ground, and the blade 22 is in a state parallel to the ground; therefore, in the process of moving the bracket 4, it is only necessary to make the auxiliary wheel 51 against the ground to ensure that the blade 22 is in the best working state, which helps to ensure the cutting effect of the bushes.
[0047] Furthermore, one end of the support rod 5 away from the auxiliary wheel 51 is hinged on the bracket 4, and the hinge axis of the support rod 5 is parallel to the rotation axis of the rotating rod 41. A stopper 43 is fixedly connected to the bracket 4, and the stopper 43 is located on the side of the support rod 5 close to the rotating rod 41; when one end of the support rod 5 abuts against the stopper 43, the auxiliary wheel 51 is in a working state. At this time, the bracket 4 is placed on the ground, and the roller 411 and the auxiliary wheel 51 are both against the ground, so that the blade 22 can be in a state parallel to the ground. A torsion spring 6 is connected between the support rod 5 and the bracket 4, and the torsion spring 6 is in a twisted state. The torsion spring 6 makes the support rod 5 press against the stopper 43. Therefore, when cutting brush, the operator only needs to keep the support rod 5 in a state of abutting against the stopper 43 to ensure that the blade 22 is parallel to the ground, which helps to ensure the effect of cutting brush. When the blade 22 encounters an obstacle in front of it, the end of the bracket 4 away from the blade 22 is pressed downward, so that the blade 22 is tilted, and the obstacle can be avoided. At this time, the support rod 5 rotates to the side away from the roller 411, and the torsion spring 6 is further twisted; after the obstacle is avoided, the end of the bracket 4 away from the blade 22 is lifted upward, the torsion spring 6 resets the support rod 5, and the support rod 5 rotates again to abut against the block 43, and then the bracket 4 is continued to be moved to continue cutting and brushing.
[0048] The above are optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A hand-held backpack brush cutter, comprising a cutting assembly, the cutting assembly comprising a working rod (1), a cutter head (2) arranged at one end of the working rod (1), and an engine (3) arranged at the other end of the working rod (1), the cutter head (2) comprising a connecting shaft (21) rotatably arranged on the working rod (1) and a blade (22) arranged on the connecting shaft (21), the connecting shaft (21) and the engine (3) being transmission-connected, characterized in that: A bracket (4) is provided on the working rod (1), and a roller (411) is provided on the bracket (4).
2. The hand-held backpack brush cutter and brush cutter according to claim 1, characterized in that: A flexible shaft transmission is provided between the engine (3) and the connecting shaft (21), and a shoulder belt (31) is provided on the engine (3).
3. The hand-held backpack brush cutter and brush cutter according to claim 2, characterized in that: The support (4) is provided with a support rod (5), and one end of the support rod (5) away from the support (4) is rotatably connected to an auxiliary wheel (51).
4. The hand-held backpack brush cutter and brush cutter according to claim 3, characterized in that: When the auxiliary wheel (51) and the roller (411) are both in contact with the ground, the rotation axis of the connecting shaft (21) is perpendicular to the ground.
5. The hand-held backpack brush cutter and brush cutter according to claim 4, characterized in that: The support rod (5) is rotatably arranged on the bracket (4), and a torsion spring (6) is connected between the support rod (5) and the bracket (4), wherein the torsion spring (6) causes the support rod (5) to have a tendency to rotate towards a side close to the roller (411).
6. The hand-held backpack brush cutter and brush cutter according to claim 1, characterized in that: A baffle (7) is provided on the working rod (1) at one end close to the blade (22), and the radius of the baffle (7) is smaller than the length of the blade (22).
7. The hand-held backpack brush cutter and brush cutter according to claim 1, characterized in that: A baffle (8) is provided at one end of the working rod (1) close to the blade (22).
8. The hand-held backpack brush cutter and brush cutter according to claim 7, characterized in that: The baffle (8) is arranged in an arc shape.
9. The hand-held backpack brush cutter and brush cutter according to claim 8, characterized in that: A buffer plate (9) is slidably provided on one side of the baffle plate (8) close to the blade (22), and a spring (10) is connected between the buffer plate (9) and the baffle plate (8).