CN109220289B - Walking type electric hedge trimmer - Google Patents

Abstract

The invention relates to a walking electric hedge trimmer, which mainly consists of a walking mechanism ①, a lifting mechanism ②, a balancing mechanism ③, a pruning mechanism ④ and a remote control device. The traveling mechanism ① includes the car body frame 11, the battery pack 12, the drive motor 13, the transmission mechanism 14, the running wheel 15, the braking mechanism 16, the control box 17 and the control armrest 18, etc.; the lifting mechanism ② includes the lifting screw 21, Worm gear transmission 22, housing 23, stepper motor 24, connecting bracket 25, handwheel 26 and connecting flange 27, etc.; the balancing mechanism ③ includes a transmission box 31, a rack and pinion mechanism 32, a stepper motor 33, four Linkage mechanism 34, hedge trimmer mounting base 35, angle adjustment mechanism 37, etc.; pruning mechanism ④ includes hedge trimmer 41, drive motor 42, transmission flexible shaft 43, etc.; the remote control device is an option, which can control the hedge trimmer when needed. All operating processes are controlled remotely.

Description

A walking electric hedge trimmer

Technical field

The present invention relates to a new type of hedge trimming equipment, specifically a walking electric hedge trimmer.

Background technique

With the development of my country's gardening industry, the pruning and shaping of hedges in parks, squares, along roads, and around communities is becoming a regular task in urban greening operations. It not only involves a wide range of areas, but also has strong seasonality. The content and objects of the operations are There are great differences in operating conditions and regional characteristics. Due to the continuous improvement of maintenance standards, the current maintenance model based on manpower is far from meeting the development needs of urban greening. The main characteristics of using pruning shears or hand-held hedge trimmers are that workers carry heavy loads, which results in poor working conditions, high physical exertion, low work efficiency, and high accident frequency. At the same time, due to "structural labor shortage" and other reasons, greening workers are generally older and have significantly different technical levels. Pre-job training is often not effectively implemented, and the neatness and aesthetic appearance of hedges after trimming are often compromised. Not guaranteed. Although the vehicle-mounted hedge trimmers developed by some domestic universities have improved work efficiency and reduced labor intensity for workers, due to their large size and high cost, they are only suitable for trimming long-distance and simple-shaped hedges on both sides of the highway. There is still little we can do to prune and maintain urban green landscapes that reflect local customs and cultural connotations. The Chinese patents with application numbers 201120329411.7, 201420244793.7, 201520039704.X, 201610349464.2, 201610927419.0, and 201620269849.3 respectively disclose various walking hedge trimmers with lifting functions installed on trolleys or with universal wheel brackets, but Either these inventions The structural design is complex (such as using a hydraulic cylinder), the operation process is cumbersome, or manual adjustment is used, the working range is small, the work efficiency is low, and it is also very difficult to promote. Therefore, there is an urgent need for a new walking hedge trimmer with complete functions, convenience and labor saving to meet the growing needs of modern urban hedge trimming and maintenance with unique characteristics. The object of the present invention is to provide a new type of walking hedge trimmer to overcome various deficiencies of existing hedge trimming equipment.

Contents of the invention

The new walking hedge trimmer according to the invention is mainly composed of a traveling mechanism, a lifting mechanism, a balancing mechanism, a pruning mechanism and a remote control device.

The traveling mechanism of the present invention is mainly composed of a vehicle body frame, a battery pack, a power mechanism, running wheels, a braking mechanism, a control box and a control armrest. The power mechanism includes a motor and a corresponding mechanical transmission mechanism; the running wheel can be driven by the power mechanism or manually; the control box is installed in the middle of the control armrest to control the entire hedge trimmer. Traveling and braking, raising and lowering of the pruning mechanism, adjustment of pruning distance and angle, starting and ending of pruning operations, etc.; the control box panel can be a touch screen structure or a mechanical structure equipped with several opening and closing buttons. The above-mentioned control can be completed manually on the control box panel, or through remote control.

The lifting mechanism of the present invention mainly consists of a lifting screw, a worm gear transmission device, a casing, an upper limit device and a lower limit device, a guide device, a stepper motor, a handwheel and a connecting bracket and wire respectively installed at the bottom of the casing. It consists of the connecting flange on the top of the bar. The connecting bracket at the bottom of the casing is connected to the car body frame in the traveling mechanism of the car body, and the connecting flange at the top of the screw is connected to the transmission box in the connecting rod balancing mechanism. The worm gear transmission device, driven by a stepper motor, can drive the lifting screw so that the connecting rod balancing mechanism and the hedge trimming mechanism can adjust the trimming position up and down to meet the needs of trimming hedges of different heights. The worm gear transmission device can also realize the rise and fall of the lifting screw by manually turning the handwheel; the lifting screw relies on the upper limit device and the lower limit device to ensure the normal operation of the lifting mechanism; the steps The power supply to the motor is provided by a battery pack installed on the frame of the vehicle body.

The balancing mechanism of the present invention is mainly composed of a transmission box, a rack and pinion mechanism, a stepper motor, a four-bar linkage mechanism, a hedge trimmer mounting base, and an angle adjustment mechanism. The transmission box body is connected to the connecting flange on the top of the screw, and the hedge trimmer mounting base is connected to the hedge trimmer. The rack-and-pinion mechanism, driven by a stepper motor, allows the balance mechanism to drive the trimmer to adjust the trimming distance; the angle adjustment mechanism is composed of an adjusting rod and a stepper motor, and is driven by the stepper motor. , the hedge trimmer mounting base can drive the trimmer to adjust the trimming angle; the power supply of the two stepper motors is provided by the battery pack installed on the frame of the vehicle body; the hedge trimmer mounting base has a Two parallel chutes and circlips are used to realize quick disassembly and locking of the hedge trimmer; the balanced end of the four-bar linkage is connected to the hedge trimmer drive motor in the hedge trimming mechanism, and the hedge trimmer drive motor serves as a counterweight Achieve balance in your hedge trimmer.

The pruning mechanism of the present invention mainly consists of a hedge trimmer, a driving motor, and a transmission flexible shaft. The hedge trimmer is connected to the hedge trimmer mounting base in the balance mechanism and can be easily disassembled and locked. The drive motor serves as a machine balance weight and is connected to the balance end of the four-bar linkage in the balance mechanism. The hedge trimmer can be a reciprocating cutting mechanism or a disc rotating cutting mechanism. Driven by the hedge trimmer drive motor, the power is transmitted to the hedge trimmer through the transmission flexible shaft to realize the hedge trimming operation; The hedge trimmer can be easily removed from the hedge trimmer mounting base, so that manual hand-held operation can be used to trim individual special occasions, improving the working flexibility of the hedge trimmer; the power supply of the drive motor is installed on the car body frame battery pack provided.

The remote control device described in the present invention is mainly used as an option and can remotely control various operations of the hedge trimmer when needed.

Description of the drawings

Figure 1 shows a schematic structural diagram of a specific embodiment of the present invention.

Figure 2 shows a schematic diagram of the walking mechanism according to the present invention.

Figure 3 shows a schematic diagram of the lifting mechanism according to the present invention.

Figure 4 shows a schematic diagram of the balancing mechanism and trimming mechanism of the present invention.

Detailed ways

The detailed implementation method of the present invention will be described below with reference to illustrations.

The new walking hedge trimmer of the present invention is shown in Figure 1. The walking mechanism ① is located at the bottom and is fixed together with the connecting bracket 25 of the lifting mechanism ② through the vehicle body frame 11; above the lifting mechanism ② is the connecting rod balancing mechanism ③, the two are fixed together through the connecting flange 27 and the transmission box 31. The left side of the balancing mechanism ③ is the hedge trimmer 41 in the pruning mechanism ④, which is connected through the hedge trimmer mounting base 35; the right side of the balancing mechanism ③ is the hedge trimmer drive motor 42, which is fixed with the balanced end of the four-bar linkage mechanism 34 .

The traveling mechanism ① is composed of a vehicle body frame 11, a battery pack 12, a drive motor 13, a transmission mechanism 14, a running wheel 15, a braking mechanism 16, a control box 17 and a control armrest 18 (see Figures 1 and 2). Through the opening and closing buttons on the panel of the touch screen or mechanical control box 17 installed on the control armrest 18, the drive motor 13 can be controlled to drive the running wheels 15 to travel through the transmission mechanism 14, and the braking mechanism 16 can be controlled to cause the running wheels 15 to travel. Brake, control the walking and braking of the entire hedge trimmer accordingly. In order to adapt to the application needs of different occasions, the present invention can have a simplified version, that is, the electrical control in the driving motor 13, the transmission mechanism 14 and the braking mechanism 16 is omitted, and the entire hedge trimmer is driven by manually controlling the handrail 18. Step on the pedal installed on the vehicle body frame 11 or pull the handle installed on the control armrest 18 to control the braking mechanism 16 to brake the entire hedge trimmer.

The lifting mechanism ② consists of a lifting screw 21, a worm gear transmission 22, a housing 23, a stepper motor 24, a connecting bracket 25 at the bottom of the housing, a handwheel 26 at the end of the worm, a connecting flange 27 at the top of the screw, and It consists of an upper limit device (not shown), a lower limit device (not shown), and a guide device (not shown) (see Figures 1 and 3). According to the predetermined trimming height, when the entire hedge trimmer approaches the hedge, the stepper motor 24 can be controlled through the opening and closing button on the panel of the control box 17 to drive the worm and worm wheel in the worm gear transmission device 22 to rotate, and the nut in the worm gear cavity drives the The lifting screw 21 rises or falls. The guide device installed on the housing 23 will limit the rotation of the lifting screw 21 during its ascent or descent. The upper limit device and the lower limit device respectively limit the highest and lowest safe working positions of the lifting screw. When the lifting screw 21 rises or falls, the balancing mechanism ③ and the trimming mechanism ④ are driven to rise and fall accordingly. For some hedges with simple shapes, since the pruning height is uniform, the hand wheel 26 can also be used to determine the working height of the pruning mechanism ④ at once before pruning.

The balancing mechanism ③ is composed of a transmission box 31, a rack and pinion mechanism 32, a stepper motor 33, a four-bar linkage mechanism 34, a hedge trimmer mounting base 35, and an angle adjustment mechanism 36 (see Figures 1 and 4). The angle adjustment mechanism 36 can be a pen barrel type or a linear stepper motor, and the adjustment rods at both ends are connected to the pins on the four-bar linkage mechanism 34 and the hedge trimmer mounting base 35 respectively. When the stepper motor operates, the distance between the two pins changes, thereby changing the angle between the hedge trimmer mounting base 35 and the connected four-bar linkage mechanism 34 rod.

The pruning mechanism ④ is composed of a hedge trimmer 41, a drive motor 42, and a transmission flexible shaft 43 (see Figures 1 and 4). The transmission flexible shaft 43 passes through the center of the four-bar linkage mechanism 34 to connect the hedge trimmer 41 and the drive motor 42. together. Through the opening and closing buttons on the panel of the control box 17, the operation of the stepper motors of the drive motor 42, the stepper motor 33 and the angle adjustment mechanism 36 can be controlled respectively. The driving motor 42 drives the hedge trimmer 41 through the transmission flexible shaft 43 to trim the hedge. The stepper motor 33 drives a pin of the four-bar linkage 34 to move forward and backward in the horizontal chute of the transmission box 31 through the rack and pinion mechanism 32, thereby controlling the hedge trimmer 41 connected to the hedge trimmer mounting base 35 to perform forward and backward movement. . The stepper motor of the angle adjustment mechanism 36 drives the hedge trimmer mounting base 35 to rotate through the adjustment rods at both ends, thereby controlling the hedge trimmer 41 connected to the hedge trimmer mounting base 35 to perform angle changing operations.

For some hedges that cannot be approached by machines or have special shapes, the hedge trimmer 41 can be quickly removed from the hedge trimmer mounting base 35, and the trimming operation can be completed manually.

When there are special needs, such as working on dangerous road sections or to reduce the labor intensity of operators, the drive motor 13, the stepper motor 27, the stepper motor 33, the stepper motor of the angle adjustment mechanism 36, the hedge trimmer drive motor 42 and The control of the braking mechanism 16 can be accomplished through a remote control device.

Claims (6)

1. A walking electric hedge trimmer, which is characterized in that: the device mainly comprises a travelling mechanism, a lifting mechanism, a connecting rod balancing mechanism, a pruning mechanism and a remote control device; the travelling mechanism (1) is positioned at the bottom and is fixed with a connecting bracket (25) of the lifting mechanism (2) through a vehicle body frame (11); the lifting mechanism (2) is provided with a connecting rod balancing mechanism (3) above, the lifting mechanism (2) is fixed with a transmission box body (31) of the connecting rod balancing mechanism (3) through a connecting flange (27), the left side of the connecting rod balancing mechanism (3) is provided with a hedge trimmer (41) in the trimming mechanism (4), and the hedge trimmer (41) is connected with a hedge trimmer mounting seat (35) and can be quickly connected and separated according to trimming requirements; the right side of the connecting rod balancing mechanism (3) is provided with a hedge trimmer driving motor (42), and the hedge trimmer driving motor (42) is fixed with the balancing end of the four-bar mechanism (34); the balancing weight of the connecting rod balancing mechanism is a hedge trimmer driving motor;

the connecting rod balancing mechanism (3) consists of a transmission box body (31), a gear rack mechanism (32), a stepping motor (33), a four-bar mechanism (34), a hedge trimmer mounting seat (35) and an angle adjusting mechanism (36); the angle adjusting mechanism (36) is a pen barrel type or linear stepping motor, two end adjusting rods are respectively connected with pin shafts on the four-bar mechanism (34) and the hedge trimmer mounting seat (35), and when the pen barrel type or linear stepping motor works, the distance between the two pin shafts changes, so that the included angle between the hedge trimmer mounting seat (35) and a rod piece of the connected four-bar mechanism (34) changes;

the trimming mechanism (4) consists of a hedge trimmer (41), a hedge trimmer driving motor (42) and a transmission flexible shaft (43), wherein the transmission flexible shaft (43) penetrates through the center of the four-bar mechanism (34) to connect the hedge trimmer (41) with the hedge trimmer driving motor (42), the stepping motor (33) and the stepping motor of the angle adjusting mechanism (36) can be controlled to work respectively through an on-off button on a panel of the control box (17), and the hedge trimmer driving motor (42) drives the hedge trimmer (41) to trim hedge by the transmission flexible shaft (43); the stepping motor (33) drives a pin shaft of the four-bar mechanism (34) to move back and forth in a horizontal chute of the transmission box body (31) through the gear rack mechanism (32), so that the hedge trimmer (41) connected to the hedge trimmer mounting seat (35) is controlled to perform back and forth movement operation.

2. The walk behind electric hedge trimmer of claim 1 wherein: the travelling mechanism mainly comprises a vehicle body frame, a battery pack, a power mechanism, travelling wheels, a braking mechanism, a control box and a control handrail.

3. The walk behind electric hedge trimmer of claim 1 wherein: the lifting mechanism mainly comprises a lifting screw rod, a worm and gear transmission device, a shell, a stepping motor, a hand wheel, a connecting bracket and a connecting flange.

4. The walk behind electric hedge trimmer of claim 1 wherein: the remote control device remotely controls each operation of the hedge trimmer when needed.

5. A walking electric hedge trimmer according to claim 1 or 2, characterized in that: the walking of the walking mechanism is realized through motor driving or through manual pushing and controlling the handrail.

6. A walking electric hedge trimmer according to claim 3 wherein: the lifting and lowering of the lifting screw rod of the lifting mechanism is realized through the driving of a stepping motor or through the manual rotation of a hand wheel.