Hedgerow pruning device

Abstract

The invention relates to a hedgerow pruning device, which comprises a frame, a knife rest body and a pruning assembly. The hedgerow pruning device is characterized in that the pruning assembly is installed on the frame through a rotatable hinge and the knife rest body. One or two groups of the pruning assemblies are arranged. Branching units are arranged among the pruning assemblies. The pruning assembly comprises three pruning units which are arranged in linear structure. Each pruning unit is respectively provided with a disc blade. In the three pruning units, a hydraulic motor is installed in the center of the pruning unit in the middle. Passive rotary seats are respectively arranged in the centers of two pruning units on the left and right sides. The rotary seats and the hydraulic motor are connected by pulleys. The hydraulic motor is a hydraulic motor with large rotating speed. The device has the characteristics of simple structure, high work efficiency, safety, reliability, good pruning effect, and no pruning dead angle and the like.

Description

Technical field [0001] The invention relates to a hedgerow maintenance equipment, in particular to a trimming device for realizing efficient operation in the hedge trimming process. Background technique [0002] With the increasing requirements for urban construction and landscaping, especially the continuous extension of highway mileage across the country, almost all provinces and cities across the country, highway construction has played a very important role in promoting the rapid development of the national economy, but The maintenance workload of highways and landscaping is also increasing. Therefore, there is an urgent need for hedge maintenance equipment that can achieve efficient all-weather operations. Among the existing hedge maintenance equipment, the actuator for trimming the hedge is the core of this type of equipment. [0003] Current hedge trimmers, especially vehicle-mounted hedge trimmers, have been used in urban beauty and greening and gardening. The public lite...

AI Technical Summary

Problems solved by technology

The trimmer has the advantages of simple structure, convenient operation, high degree of automation, high operating efficiency, fast switching speed of trimming posture, wide operating range, high trimming quality, and safe operation, which can effectively overcome the needs of high-position trimming and low-position mowing existing in existing hedge trimmers. Defects such as two sets of independent mechanisms, complicated operation, high production cost, low degree of automation, and small operating range

[0006] However, the above trimming actuators all have the following problems: 1. The power source of the actuator adopts a power frequency three-phase asynchronous motor, and the maximum speed is theoretically only 3000 rpm, which limits the improvement of trimming efficiency.

2. The motor is limited by the insulation performance of electrical appliances, so it cannot be used in a wet field environment; 3. The cutting blade of the actuator adopts a rectangular structure blade. From the perspective of the actual application effect of the combination of the two, the hedge trimming is far from ideal The effect of pruning is low, and at the same time, it is accompanied by the phenomenon that the relatively thick branches cannot be cut and the branches are broken; 4. The multiple cutting blades of the actuator are arranged in a straight line, because there are gaps between adjacent blades, and there is no other Necessary device to prevent the generation of trimming dead angle

The applicant invented a patent in 2011 in response to the above defects: "High-speed Trimming Mechanism with Staggered Knife Arrays for Hedge Maintenance" (Application No.: CN201110343259). In the process, the implementation of this patented technical solution has great limitations, mainly as follows: 1. Since this technical solution uses a synchronous shunt motor, the number of superimposed unit motors in the synchronous shunt motor used in the selection must be equal to the number of working hydraulic motors In contrast, the weight of the synchronous shunt motor increases greatly with the increase in the number of superimposed unit motors, resulting in a corresponding increase in the weight of the entire device, making this technical solution practically impossible to implement in a cantilever manner.

2. If the synchronous shunt motor is separated from the whole device and installed separately, in the case of a large number of working hydraulic motors, it will be very difficult to arrange the corresponding hydraulic pipelines, and it is also not practical for actual implementation

3. Since the connection between the trimming assembly and the frame is through a rigid connection, the trimming device is not flexible, and sometimes there will be a trimming dead angle

4. When pruning forward, it is often blocked by the branches in front, so the pruning resistance is relatively large, and the pruning effect is not good

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