Multi-functional municipal garden greening trimmer

Abstract

The application relates to the field of municipal gardens, in particular to a multifunctional municipal garden greening trimmer, which comprises a mounting box with a hollow interior and an open side, a sealing plate is hinged to the mounting box at the opening, a plurality of straps are arranged on the other side of the opening of the mounting box, two vertical rotating shafts are coaxially arranged in the mounting box, the two rotating shafts respectively rotate through the top end and the bottom end of the mounting box, a driving assembly for driving the two rotating shafts to rotate in opposite directions is further arranged in the mounting box, a trimming arm is further arranged on the side of the mounting box opposite to the straps, the trimming arm can be detachably connected with the two rotating shafts, and a trimming assembly for trimming grass and trees is arranged at the end of the trimming arm away from the rotating shafts. The whole trimmer is carried on the back of a gardener through the straps, the driving assembly drives the trimming assembly to automatically reciprocate and move in an arc direction through the rotating shafts and the trimming arm, the trimmer can be simultaneously used for trimming lawns and shrubs, and the gardener does not need to manually hold the trimming arm, so that the labor intensity of the gardener is reduced.

Description

Technical Field

[0001] This application relates to the field of municipal landscaping, and in particular to a multifunctional municipal landscaping pruning machine. Background Technology

[0002] Modern gardens are planted with a large number of flowers, trees and shrubs. As these green plants continue to grow, gardeners need to regularly prune them to ensure the garden's aesthetic appeal. The pruning process is usually carried out using a pruning machine.

[0003] The related technology discloses a handheld mower for lawn maintenance, including a handheld handle, a motor at the head of the handheld handle, a cutter head on the output shaft of the motor, and multiple blades arranged circumferentially on the cutter head.

[0004] During lawn mowing, workers need to hold the hand poles with both hands and swing them back and forth in a fan shape. Therefore, after working for a long time, workers' arms will inevitably become sore, which is a significant drawback. Summary of the Invention

[0005] To address the issue of arm pain experienced by workers holding pruning machines for extended periods, this application provides a multifunctional municipal landscaping pruning machine.

[0006] The multifunctional municipal landscaping and greening pruning machine provided in this application adopts the following technical solution:

[0007] A multifunctional municipal landscaping pruning machine includes a hollow mounting box with an opening on one side. A sealing plate is hinged to the opening of the mounting box. Multiple shoulder straps are provided on the other side of the mounting box opposite the opening. Two vertical rotating shafts are coaxially arranged inside the mounting box, and the two rotating shafts rotatably extend out of the top and bottom of the mounting box, respectively. The mounting box also contains a drive assembly for driving the two rotating shafts to rotate forward and backward. A pruning arm is also provided on the side of the mounting box opposite the shoulder straps. The pruning arm is detachably connected to both rotating shafts. A pruning component for pruning vegetation is provided at the end of the pruning arm away from the rotating shafts.

[0008] By adopting the above technical solution, gardeners can carry the installation box on their backs with a shoulder strap. The drive component drives two rotating shafts to rotate, and the rotating shafts drive the trimming component to make a reciprocating arc motion through the drive arm. Connecting the trimming arm to different rotating shafts makes the trimmer suitable for trimming lawns and shrubs. The trimming process does not require workers to manually hold the trimmer, reducing the possibility of arm pain for gardeners and reducing labor intensity.

[0009] Optionally, the drive assembly includes a drive motor disposed in the mounting box and electrically connected to the control system. The output shaft of the drive motor is coaxially connected to a drive rod. Two incomplete helical gears are arranged on the drive rod along its axial direction. Both rotating shafts are provided with complete helical gears. The incomplete helical gears mesh with the two complete helical gears. The incomplete helical gears include a gear plate and multiple sets of helical teeth circumferentially spaced on the gear plate. The multiple sets of helical teeth of the two incomplete helical gears are circumferentially staggered about the axis of the drive rod.

[0010] By adopting the above technical solution, the output shaft of the drive motor drives the drive rod to rotate, and the drive rod drives two incomplete helical gears to rotate. Multiple sets of gears on the two incomplete helical gears alternately mesh with the two complete helical gears in the circumferential direction. When the complete helical gear meshes with the helical teeth on different incomplete helical gears, the rotation direction of the complete helical gear is different, thereby realizing the reciprocating forward and reverse rotation of the shaft.

[0011] Optionally, a reset groove is provided at the end of the rotating shaft outside the mounting box. A fastening bolt is threadedly connected to the rotating shaft at the position relative to the reset groove. A joint seat for detachable connection of the trimming arm is rotatably sleeved on the fastening bolt. A ratchet is coaxially provided on the side wall of the joint seat relative to the axial direction of the fastening bolt. A receiving opening is provided on the side wall of the reset groove relative to the axial direction of the fastening bolt. The ratchet extends into the receiving opening. A pawl that engages with the ratchet is hinged to the rotating shaft at the position relative to the receiving opening. A locking spring supports the pawl between the pawl and the side wall of the receiving opening.

[0012] By employing the above technical solution, when workers are trimming shrubs or lawns of different heights, rotating the joint seat to a suitable angle raises the trimming arm and trimming assembly to the appropriate height, causing the joint seat to rotate the ratchet. Once the joint seat stops rotating, the locking spring's supporting force pushes the pawl's tip into a groove on the ratchet, thus preventing the joint seat from rotating back and causing the trimming assembly to lower again. To lower the trimming assembly, the worker first disassembles the trimming arm and joint seat, then continues rotating the joint seat.

[0013] Optionally, the joint pivot has a insertion hole for engaging the trimming arm. One end of the trimming arm located inside the insertion hole has a T-shaped end. The smaller diameter end of the end is connected to the trimming arm. A locking pin is slidably inserted through the joint pivot relative to the insertion hole. The locking pin is arranged radially along the insertion hole. A limiting end piece is provided at the end of the locking pin outside the insertion hole. An L-shaped locking head is provided on the pin body inside the insertion hole. One end of the locking head is used to abut against the position with the smaller diameter end piece. A quick-connect compression spring is supported between the side of the locking head facing the limiting end piece and the side wall of the insertion hole. The quick-connect compression spring is sleeved on the locking pin.

[0014] By adopting the above technical solution, when connecting the trimmer arm to the joint mount, the worker inserts the end of the trimmer arm into the insertion hole and presses the locking pin into the insertion hole. The locking pin pushes the locking head to compress the quick-connect spring. When the end moves to the appropriate position in the insertion hole, the worker releases the locking pin. The deformation force of the quick-connect spring pushes one end of the locking head to press against the smaller diameter position of the end. Thus, under the action of the locking head and the end, the trimmer arm cannot be disengaged from the joint mount, realizing a detachable connection between the trimmer arm and the joint mount.

[0015] Optionally, the trimming assembly includes a trimming seat disposed on the trimming arm, a trimming motor bolted to the trimming seat and electrically connected to the control system, the output shaft of the trimming motor rotating through the trimming seat and connected to a blade disc, the blade disc having a plurality of blades arranged circumferentially.

[0016] By adopting the above technical solution, the output shaft of the trimming motor drives the cutter head to rotate, and the cutter head drives multiple blades to rotate, thereby trimming shrubs and lawns.

[0017] Optionally, the trimming seat is hinged to the trimming arm, and an electric cylinder electrically connected to the control system is hinged to the trimming arm, with the piston rod of the electric cylinder hinged to the trimming seat.

[0018] By adopting the above technical solution, gardeners can control the extension and retraction of the electric cylinder piston rod through the control system, thereby driving the pruning seat to rotate, so that the pruning component can maintain a corresponding appropriate angle when pruning green plants of different heights.

[0019] Optionally, the cutter head is slidably mounted on the output shaft of the trimming motor and is bolted on by mounting bolts.

[0020] By adopting the above technical solution, when pruning different green plants, workers can change the blades with different blades, thereby improving the pruning effect and extending the service life of the blades.

[0021] Optionally, the trimming arm includes multiple coaxial unit arms, with adjacent unit arms plugged in and bolted together.

[0022] By adopting the above technical solution, workers can flexibly prune greenery at both near and far distances by increasing or decreasing the number of unit arms, further increasing the pruning range of the pruning machine.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Gardeners carry the installation box on their backs with straps. The drive unit drives two rotating shafts to rotate. The rotating shafts drive the trimming component to make a reciprocating arc motion through the drive arm. Connecting the trimming arm to different rotating shafts makes the trimmer suitable for trimming lawns and shrubs. The trimming process does not require workers to manually hold the trimmer, reducing the possibility of arm pain for gardeners and reducing labor intensity.

[0025] 2. When workers are trimming shrubs or lawns of different heights, they rotate the joint to the appropriate angle, causing the trimming arm to lift the trimming assembly to the desired height. The joint then drives the ratchet to rotate. When the joint stops rotating, the locking spring's supporting force pushes the tip of the pawl into the groove on the ratchet, thus preventing the joint from rotating back and causing the trimming assembly to lower again. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0027] Figure 2 This is a schematic diagram of the drive motor, the complete bevel gear, and the incomplete bevel gear in the embodiments of this application.

[0028] Figure 3 This is an exploded view of the fastening bolt, joint pivot, and ratchet in the embodiments of this application.

[0029] Figure 4 This is a cross-sectional view of the locking pin, end cap, and locking head in an embodiment of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Mounting box; 2. Sealing plate; 3. Shoulder strap; 4. Rotary shaft; 401. Reset slot; 402. Receiving port; 403. Insertion hole; 51. Drive motor; 52. Drive rod; 53. Incomplete helical gear; 531. Gear disc; 532. Helical gear; 54. Complete helical gear; 6. Trimming arm; 7. Trimming assembly; 71. Trimming seat; 72. Trimming motor; 73. Cutter disc; 74. Blade; 8. Fastening bolt; 9. Joint pivot; 10. Ratchet; 11. Pawl; 12. Locking spring; 13. End; 14. Locking pin; 15. Limiting end piece; 16. Lock head; 17. Quick-connect spring; 18. Electric cylinder. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0032] This application discloses a multi-functional municipal landscaping pruning machine.

[0033] Reference Figure 1The multi-functional municipal landscaping and greening pruning machine includes a hollow mounting box 1 with an opening on one side. A sealing plate 2 is hinged to the opposite opening of the mounting box 1, and multiple shoulder straps 3 are provided on the other side of the mounting box 1 opposite the opening.

[0034] Reference Figure 1 The installation box 1 is equipped with two trimming mechanisms. When the worker carries the installation box 1 on his back using the shoulder strap 3, the two trimming mechanisms are located on the left and right sides of the worker to perform trimming work.

[0035] Reference Figure 1 and Figure 2 The trimming mechanism includes two vertically and coaxially arranged rotating shafts 4 inside the mounting box 1, with a rotating shaft 4 between the two rotating shafts 4. The rotating shaft 4 at the higher position rotates upward and passes through the top of the mounting box 1, while the rotating shaft 4 at the lower position rotates downward and passes through the bottom of the mounting box 1.

[0036] Reference Figure 1 The mounting box 1 also has a trimming arm 6 on the side opposite to the shoulder strap 3. The trimming arm 6 can be detachably connected to both rotating shafts 4. The trimming mechanism also includes a drive assembly for driving the two rotating shafts 4 to rotate forward and backward, and a trimming assembly 7 for trimming vegetation.

[0037] Reference Figure 1 The worker carries the entire trimmer on their back using the shoulder strap 3. The drive component drives the two rotating shafts 4 to rotate in both directions, so that the trimming arm 6 drives the trimming component 7 to move in a reciprocating arc to trim the grass and trees. During this process, the worker does not need to manually hold the trimming arm 6, thus reducing the possibility of the worker's arm getting sore due to long hours of work and reducing the worker's labor intensity.

[0038] Reference Figure 1 and Figure 2 The drive assembly includes a drive motor 51 bolted inside the mounting box 1 and electrically connected to the control system, and a drive rod 52 coaxially connected to the output shaft of the drive motor 51.

[0039] Two incomplete helical gears 53 are fixedly sleeved on the drive rod 52. The incomplete helical gears 53 include a toothed disk 531 and multiple sets of helical teeth 532 arranged circumferentially on the toothed disk 531. The multiple sets of helical teeth 532 of the two incomplete helical gears 53 are circumferentially staggered about the axis of the drive rod 52.

[0040] Two fully helical gears 54 are fixedly mounted on two rotating shafts 4 respectively, and two incomplete helical gears 53 are located between the two fully helical gears 54. The incomplete helical gears 53 are used to mesh with the fully helical gears 54.

[0041] Reference Figure 1 and Figure 2The output shaft of the drive motor 51 drives the drive rod 52 to rotate, and the drive rod 52 drives the two incomplete helical gears 53 to rotate. When the helical teeth 532 on the incomplete helical gear 53 mesh with the complete helical gear 54, the complete helical gear 54 drives the corresponding rotating shaft 4 to rotate.

[0042] Since the multiple sets of helical teeth 532 on the two incomplete helical gears 53 are circumferentially spaced about the axis of the drive rod 52, the multiple sets of helical teeth 532 on the two incomplete helical gears 53 will alternately mesh with a single complete helical gear 54. When the complete helical gear 54 meshes with the helical teeth 532 on different incomplete helical gears 53, the corresponding directions of the rotating shaft 4 are different, thereby realizing the reciprocating forward and reverse rotation of the rotating shaft 4.

[0043] Reference Figure 1 The trimming assembly 7 includes a trimming seat 71 hinged to the trimming arm 6 and a trimming motor 72 bolted to the trimming seat 71 and electrically connected to the control system. The output shaft of the trimming motor 72 rotates through the trimming seat 71 and is connected to a blade disc 73. The blade disc 73 is circumferentially provided with a plurality of blades 74.

[0044] The output shaft of the pruning motor 72 drives the cutter head 73 to rotate, and the cutter head 73 drives multiple blades 74 to rotate, thereby achieving the pruning of vegetation.

[0045] The cutter head 73 is slidably mounted on the output shaft of the trimming motor 72 and is bolted on by mounting bolts (not shown in the figure). This allows the worker to replace the cutter head 73 with different blades 74, making it suitable for trimming different plants and extending the service life of the blades 74.

[0046] Reference Figure 1 The trimming arm 6 is hinged to an electric cylinder 18 that is electrically connected to the control system. The piston rod of the electric cylinder 18 is hinged to the trimming seat 71. In this way, the worker controls the extension and retraction of the piston rod of the electric cylinder 18 through the control system, thereby adjusting the tilt angle of the blade 74. The blade 74 can trim grass and trees at different angles, improving the trimming effect.

[0047] In this application, the drive motor 51, the trimming motor 72 and the electric cylinder 18 are all powered by a storage battery (not shown in the figure). The storage battery is installed in the mounting box 1, so that the operation of the trimming machine is not limited by the length of the power supply wire.

[0048] Reference Figure 1 The trimming arm 6 includes multiple coaxial unit arms. Adjacent unit arms are plugged in and bolted together. Workers can expand the trimming range of the trimming machine by increasing or decreasing the number of unit arms.

[0049] Reference Figure 1 and Figure 3The end of the rotating shaft 4 located outside the mounting box 1 has a reset rotating groove 401. The rotating shaft 4 is threaded with a fastening bolt 8 at the position relative to the reset rotating groove 401. The fastening bolt 8 is rotatably fitted with a joint rotating seat 9 for detachable connection with the trimming arm 6.

[0050] A ratchet 10 is coaxially welded to one side of the joint swivel seat 9 relative to the axial side of the fastening bolt 8. A receiving opening 402 is opened on the side of the reset groove 401 relative to the axial side of the fastening bolt 8, and the ratchet 10 extends into the receiving opening 402.

[0051] The pivot 4 is hinged to the position of the receiving port 402 with a pawl 11 that engages with the ratchet 10. A locking spring 12 supports the pawl 11 against the side wall of the receiving port 402.

[0052] Reference Figure 1 and Figure 3 The rotating connection between the rotating shaft 4 and the trimming arm 6 is achieved through the joint swivel 9, allowing the worker to rotate the trimming arm 6 to adjust the height of the trimming component 7, thus making it suitable for trimming grasses and trees of different heights.

[0053] Reference Figure 1 and Figure 3 Meanwhile, due to the engagement of ratchet 10 and pawl 11, trimming arm 6 can only rotate counterclockwise upwards, but cannot rotate clockwise downwards, thus reducing the possibility of trimming arm 6 rotating clockwise downwards again after being raised.

[0054] When the trimming assembly 7 needs to be lowered from a high place to a low place, the worker first separates the trimming arm 6 from the joint pivot 9, then continues to rotate the joint pivot 9 counterclockwise to the appropriate angle, and then the trimming arm 6 is reconnected to the joint pivot 9.

[0055] Reference Figure 1 and Figure 4 The joint pivot 9 has a insertion hole 403 for inserting and mating the trimming arm 6. One end of the trimming arm 6 located in the insertion hole 403 is welded with a T-shaped end 13. The smaller diameter end of the end 13 is welded to the trimming arm 6.

[0056] The joint pivot 9 is slidably provided with a locking pin 14 at the position relative to the insertion hole 403. The locking pin 14 is arranged radially along the insertion hole 403. A limiting end piece 15 is welded to one end of the locking pin 14 outside the insertion hole 403. An L-shaped lock head 16 is welded to the pin body of the locking pin 14 inside the insertion hole 403.

[0057] One end of the lock head 16 is used to press against the position of the end head 13 with a smaller diameter. A quick-connect spring 17 is supported between the side of the lock head 16 facing the limiting end piece 15 and the side wall of the insertion hole 403. The quick-connect spring 17 is sleeved on the lock post 14.

[0058] Reference Figure 1 and Figure 4 During connection, the worker first presses the locking pin 14 into the insertion hole 403, and then inserts the end 13 into the appropriate position within the insertion hole 403. At this time, the locking pin 14 is released, and the deformation force of the quick-connect compression spring 17 pushes one end of the locking head 16 against the position with the smaller diameter of the end 13, so that the end 13 cannot be moved out of the insertion hole 403, thereby realizing the detachable connection between the joint pivot 9 and the trimming arm 6.

[0059] Reference Figure 1 Since there are two trimming mechanisms on the mounting box 1 in this application, in order to avoid collisions between the blades 74 of the two trimming mechanisms when they approach each other, a small gap can be left between the heights of the blades 74 of the two trimming components 7 when adjusting the height of the trimming assembly 7.

[0060] Because of the small gap, it will not have a significant impact on the flatness of the trimming, and it can also reduce the possibility of damage to the blade 74. Most importantly, it can reduce the possibility of blind spots in trimming.

[0061] The implementation principle of a multifunctional municipal landscaping pruning machine according to an embodiment of this application is as follows:

[0062] Before trimming, the worker first rotates the joint swivel 9 to a suitable angle according to the height of the object to be trimmed. The ratchet 10 and the pawl 11 cooperate to achieve unidirectional restriction on the angle of the joint swivel 9.

[0063] Afterwards, the worker first presses the locking pin 14 into the insertion hole 403, and then inserts the end 13 into the appropriate position in the insertion hole 403. At this time, the locking pin 14 is released, and the deformation force of the quick-connect compression spring 17 pushes one end of the locking head 16 to press against the position with the smaller diameter of the end 13, thus realizing the connection between the trimming arm 6 and the joint pivot 9.

[0064] The worker controls the extension and retraction of the piston rod of the electric cylinder 18 through the control system to adjust the tilt angle of the blade 74. After the angle is adjusted, the worker can start the drive motor 51. The output shaft of the drive motor 51 drives the drive rod 52 to rotate. The drive rod 52 drives the two incomplete helical gears 53 to rotate. Multiple sets of gears on the two incomplete helical gears 53 alternately mesh with the two complete helical gears 54 in a circumferential direction. When the complete helical gears 54 mesh with the helical teeth 532 on different incomplete helical gears 53, the rotation direction of the complete helical gears 54 is different, thus realizing the reciprocating forward and reverse rotation of the rotating shaft 4.

[0065] The rotating shaft 4 drives the trimming assembly 7 to move in a reciprocating arc direction through the trimming arm 6. At the same time as the drive motor 51 is started, the trimming motor 72 is started. The output shaft of the trimming motor 72 drives the blade 74 to rotate through the cutter head 73, thereby realizing the trimming of grass and trees.

[0066] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multifunctional municipal landscaping pruning machine, comprising a hollow mounting box (1) with an opening on one side, wherein a sealing plate (2) is hinged to the mounting box (1) at the opening, and multiple shoulder straps (3) are provided on the other side of the mounting box (1) opposite the opening, characterized in that: The mounting box (1) is equipped with two vertical rotating shafts (4) coaxially. The two rotating shafts (4) rotate through the top and bottom of the mounting box (1) respectively. The mounting box (1) is also equipped with a drive assembly for driving the two rotating shafts (4) to rotate forward and backward. The mounting box (1) is also equipped with a trimming arm (6) on the side opposite to the shoulder strap (3). The trimming arm (6) can be detachably connected to both rotating shafts (4). The end of the trimming arm (6) away from the rotating shafts (4) is equipped with a trimming component (7) for trimming grass and trees. The drive assembly includes a drive motor (51) disposed in the mounting box (1) and electrically connected to the control system. The output shaft of the drive motor (51) is coaxially connected to a drive rod (52). Two incomplete helical gears (53) are arranged on the drive rod (52) along its axial direction. Both rotating shafts (4) are provided with complete helical gears (54). The incomplete helical gears (53) mesh with the two complete helical gears (54). The incomplete helical gears (53) include a gear disk (531) and multiple sets of helical teeth (532) circumferentially spaced on the gear disk (531). The multiple sets of helical teeth (532) of the two incomplete helical gears (53) are circumferentially staggered about the axis of the drive rod (52). The rotating shaft (4) has a reset groove (401) at its end outside the mounting box (1). A fastening bolt (8) is threaded onto the rotating shaft (4) at a position relative to the reset groove (401). A joint seat (9) for detachable connection with the trimming arm (6) is rotatably sleeved on the fastening bolt (8). A ratchet (10) is coaxially arranged on the side wall of the joint seat (9) relative to the axial direction of the fastening bolt (8). A receiving opening (402) is opened on the side wall of the reset groove (401) relative to the axial direction of the fastening bolt (8). The ratchet (10) extends into the receiving opening (402). A pawl (11) is hinged to the rotating shaft (4) at a position relative to the receiving opening (402) and engages with the ratchet (10). A locking spring (12) supports the pawl (11) against the side wall of the receiving opening (402). The joint pivot (9) has a insertion hole (403) for inserting and engaging the trimming arm (6). One end of the trimming arm (6) located within the insertion hole (403) has a T-shaped end (13). The smaller diameter end of the end (13) is connected to the trimming arm (6). A locking pin (14) is slidably inserted through the joint pivot (9) relative to the insertion hole (403). The locking pin (14) is arranged radially along the insertion hole (403). A limiting end piece (15) is provided at one end outside the insertion hole (403). The locking post (14) is provided with an L-shaped locking head (16) on its post body inside the insertion hole (403). One end of the locking head (16) is used to press against the position with a smaller diameter of the end (13). A quick-connect compression spring (17) is supported between the side of the locking head (16) facing the limiting end piece (15) and the side wall of the insertion hole (403). The quick-connect compression spring (17) is sleeved on the locking post (14).

2. The multifunctional municipal landscaping pruning machine according to claim 1, characterized in that: The trimming assembly (7) includes a trimming seat (71) disposed on the trimming arm (6) and a trimming motor (72) bolted to the trimming seat (71) and electrically connected to the control system. The output shaft of the trimming motor (72) rotates through the trimming seat (71) and is connected to a cutter head (73). The cutter head (73) is circumferentially provided with a plurality of blades (74).

3. The multifunctional municipal landscaping pruning machine according to claim 2, characterized in that: The trimming seat (71) is hinged to the trimming arm (6), and an electric cylinder (18) electrically connected to the control system is hinged on the trimming arm (6). The piston rod of the electric cylinder (18) is hinged to the trimming seat (71).

4. The multifunctional municipal landscaping pruning machine according to claim 2, characterized in that: The cutter head (73) is slidably mounted on the output shaft of the trimming motor (72) and is bolted on by mounting bolts.

5. The multifunctional municipal landscaping pruning machine according to claim 1, characterized in that: The trimming arm (6) includes multiple coaxial unit arms, with adjacent unit arms being plugged in and bolted together.

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