DE112016002687T5 - DC Verticutter - Google Patents

Abstract

The present invention discloses a DC scarifier having a main housing for receiving a scarifier main body, a handle connected to the main housing such that the scarifier main body can move under the action of an external force, and a wheel set having a rear Wheel set and a front wheel set and is attached to the underside of the main housing, wherein the scarifier main body comprises a Vertikutiereinheit, a drive device for driving the Vertikutiereinheit, a drive control unit for controlling the operation of the scarifying unit. The drive device comprises a battery assembly and a DC motor electrically connected to the battery assembly, wherein in the main housing a battery compartment for the battery assembly and a receiving space for the DC motor are formed, in which battery compartment serving to attach the battery assembly holder is arranged. The scarifier according to the invention is characterized by low volume, simple construction, high flexibility, good usability, low energy consumption, long service life and long engine life and proves to be suitable for hills, mountainous terrain, gardens, small plots with large height differences, ground surfaces with cereals and greenhouses.

Description

Field of the invention

The present invention relates to garden tools, in particular to a DC scarifier in the form of a small scarifier.

Technical background

With the rapid development of agriculture, a mechanization of agricultural activities is gradually being realized. Scarifying is a fundamental work in agriculture. An appropriate scarifier is set up to loosen the soil, remove humus and wilted leaves from the surface of the earth, and expose the plant cover to increased growth of the sun.

Conventional scarifiers have the following problems: (1) They have large outer dimensions and a large weight and are not easy to operate. In particular, those machines that have been moved from the open field directly into a greenhouse, can be difficult to turn inside the equipment or change and also can not be operated in edge and corner areas. (2) Due to the low adaptability, a high soil water content (more than 15%) results in a reduced scarifying power and an increased energy consumption. For these reasons, the conventional large scarifiers are only suitable for building large flat areas without crops and are not suitable for hills, mountainous terrain, small plots with large differences in height, ground areas with grain or greenhouses.

Small scarifiers have been designed based on conventional scarifiers and are simplified in design and construction and can be used for private gardens. The present verticutter consist mainly of an electric motor, a reduction gear, a chassis, a Vertikutiermesser and a Tiefenverstelleinheit, wherein as an electric motor, an AC motor is used, which requires a power supply cable and therefore is unwieldy.

Disclosure of the invention

To overcome the drawbacks of the prior art, it is an object of the present invention to provide a DC scarifier, which is characterized by lower volume, simpler structure, greater flexibility and lower power consumption compared to conventional scarifiers and for hills, mountainous terrain , small land with large differences in height, soil with crops and greenhouses is suitable.

To solve this problem, the invention proposes the following embodiments:
A DC scarifier includes a main housing for receiving a scarifier main body, a handle connected to the main housing such that the scarifier main body can move under the action of an external force, and a wheel set having a rear wheel set and a front wheel set Wheel set comprises and is attached to the underside of the main housing, wherein the scarifier main body comprises a Vertikutiereinheit, a drive means for driving the Vertikutiereinheit, a drive control unit for controlling the operation of the scarifying unit.

The drive device comprises a battery assembly and a DC motor electrically connected to the battery assembly, wherein in the main housing a battery compartment for the battery assembly and a receiving space for the DC motor are formed, in which battery compartment serving to attach the battery assembly holder is arranged.

It is further provided that a brushless DC motor is used as a DC motor, which comprises a motor shaft, a stator mounted on the motor shaft, a plastic bobbin, cooperating with the stator two-part plastic bobbin and a rotor assembly.

It is further provided that the rotor assembly comprises a housing located on the outer circumference of the stator housing, a cage disposed within the housing and a housing attached to the inner wall of the housing permanent magnet, which permanent magnet comprises a south pole electric sheet and a north pole electric sheet, wherein on the inner wall of the Pull housing are formed in the axial direction extending mounting grooves for mounting the South Pole electric sheet and the North Pole electric sheet, the South Pole electric sheet and the North Pole electric sheet are mutually offset by means of the fastening grooves attached to the cage.

It is further provided that the two-part plastic bobbin comprises a first plastic bobbin and a second plastic bobbin, wherein between the first plastic bobbin and the second plastic bobbin a ventilation duct is formed.

It is further provided that the rotor assembly further at one end of the motor shaft located fan blades and arranged at the other end of the motor shaft mounting plate.

It is further provided that the Vertikutiereinheit comprises a knife shaft and attached to the knife shaft Vertikutmesserersatz or steel claws, wherein on the underside of the main housing serving for attachment of the blade shaft holder is arranged and the blade shaft is connected via a Riemenradsatz with the motor shaft of the DC motor, which Pulley set comprises a drive wheel, a driven wheel and a belt connected to the drive wheel and the driven wheel, wherein the drive wheel is fixed to the motor shaft and the output gear to the blade shaft.

It is further provided that the drive control unit comprises a control unit for controlling the output power of the DC motor and serving for switching on and off of the control unit control switch, wherein the control unit is electrically connected both to the control switch and to the electric motor.

It is further provided that the control switch is arranged on the handle and comprises a switch button and a switch actuating lever, which are electrically connected to each other.

It is further provided that the battery assembly is a lithium battery pack.

It is further provided that the DC scarifier according to the invention further comprises a garbage bin which is attached to the rear end of the main housing behind the Vertikutiereinheit.

Presentation of the pictures

In the following the invention will be described in more detail by means of concrete embodiments with reference to the accompanying drawings. Show

1 an external view of a direct current Vertikutierers invention,

2 the schematic structure of a direct current Vertikutierers invention,

3 the schematic structure of a brushless DC motor according to the invention,

4 the schematic structure of a Vertikutiereinheit a Gleichstromutikutierers invention and

5 the schematic structure of a variant of Vertikutiereinheit the Gleichstromutikutierers invention.

LIST OF REFERENCE NUMBERS

10

 main body

11

 battery

111

 chamber

112

 cover

12

 accommodation space

20

 handle

30

 wheelset

40

 scarifying

41

 cutterhead

42

 Vertikutiermessersatz

43

 steel claw

50

 driving means

51

 battery assembly

52

 Brushless DC motor

531

 motor shaft

5321

 First plastic coil carrier

5322

 Second plastic coil carrier

533

 stator

534

 Cage

535

 permanent magnet

536

 drawn housing

537

 fan blade

538

 mounting plate

61

 control unit

62

 control switch

621

 switch button

622

 Switch actuating lever

70

 waste hopper

Concrete embodiments

• – ein Hauptgehäuse 10 zur Aufnahme eines Vertikutierer-Hauptkörpers, der eine Vertikutiereinheit 40, eine Antriebseinrichtung 50 zum Antrieb der Vertikutiereinheit 40, eine Antriebssteuereinheit zum Steuern des Betriebs der Vertikutiereinheit 40 umfasst,
• – einen Handgriff 20, welcher derart an dem Hauptgehäuse angeschlossen ist, dass sich der Vertikutierer-Hauptkörper unter Einwirkung einer äußeren Kraft bewegen kann,
• – einen Radsatz 30, der einen hinteren Radsatz und einen vorderen Radsatz umfasst und an der Unterseite des Hauptgehäuses 10 angebracht ist.

As in 1 and 2 comprises a DC scarf according to the invention

• - a main body 10 for receiving a scarifier main body comprising a scarifying unit 40 , a drive device 50 for driving the scarifying unit 40 a drive control unit for controlling the operation of the scarifying unit 40 includes,
• - a handle 20 which is connected to the main housing such that the scarifier main body can move under the action of an external force,
• - a wheelset 30 comprising a rear wheel set and a front wheel set and at the bottom of the main housing 10 is appropriate.

The drive device 50 includes a battery assembly 51 and a DC motor, in the present embodiment, a brushless DC motor 52 , where the battery assembly 51 with the brushless DC motor 52 electrically connected. In the main body 10 are a battery compartment 11 for the battery assembly 51 and a recording room 12 for the brushless DC motor 52 educated. The battery compartment 11 includes a chamber 111 and a lid 112 , being in the chamber 111 one for mounting the battery assembly 51 serving holder (not shown) is arranged.

In a first embodiment according to 3 includes the brushless DC motor 52 in detail, a motor shaft 531 , one on the motor shaft 531 mounted stator 533 , a plastic bobbin, one with the stator 533 cooperating two-piece plastic bobbin and a rotor assembly. Starting from the first embodiment, the rotor assembly in a second embodiment of the invention comprises an outer circumference of the stator 533 enclosing pulling housing 536 , one inside the drawing housing 536 located and with the housing 536 interacting cage 534 and one on the inner wall of the drawing housing 536 attached permanent magnet 535 , wherein the permanent magnet 535 includes a South Pole electric sheet and a North Pole electric sheet. On the inner wall of the drawing housing 536 are in the axial direction extending mounting grooves for mounting the South Pole electric sheet and the North Pole electric sheet formed, the South Pole electric sheet and the North Pole electric sheet offset by means of these mounting grooves to each other on the drawing housing 536 are attached. Through the interaction of cage and drawing housing 536 is a secure attachment of the South Pole electric sheet and the North Pole electric sheet on the inner wall of the drawing housing 536 possible. In the concrete embodiment is the permanent magnet 535 Of course, not only limited to electrical sheets, but can be performed in any other way, as far as the same functions as can be realized with electric sheets.

Starting from the first and second embodiments, the two-part plastic bobbin in a third embodiment comprises a first plastic bobbin 5321 and a second plastic bobbin 5322 , being between the first plastic bobbin 5321 and the second plastic bobbin 5322 a ventilation channel is formed. This ventilation channel can serve as a cooling channel to help cool the windings and extend the life of the electric motor.

Starting from the first to the third embodiment, the rotor assembly further comprises fan blades located at one end of the motor shaft 537 and a mounting plate disposed at the other end of the motor shaft 538 ,

In the first to third embodiments, the scarifying unit comprises 40 in detail, a knife shaft 41 and one on the knife shaft 41 attached scarifier set 42 , being at the bottom of the main body 10 one for fixing the knife shaft 41 serving holder (not shown) is arranged. Here is the knife shaft 41 via a Riemenradsatz (not shown) with the motor shaft 531 of the brushless DC motor 52 which pulley set comprises a drive wheel, an output gear and a belt connected to the drive wheel and the output gear, wherein the drive wheel on the motor shaft and the output gear on the blade shaft 41 is attached. In addition, the Vertikutiermessersatz the Vertikutiereinheit also by steel claws 43 (see. 5 ) or other structures which have the scarifying function or allow aeration of the soil surface.

In the first to third embodiments, the drive control unit includes a controller 61 for controlling the output power of the DC motor and one for turning on and off the controller 61 serving control switch 62 , where the control unit 61 both with the control switch 62 as well as being electrically connected to the DC motor. In the present embodiment, the control device 61 the brushless DC motor 52 assigned and electrically connected to the brushless DC motor 52 connected. By controlling the output power of the electric motor in accordance with the respective workload, power saving can be effectively achieved.

In the first to third embodiments, the control switch may be disposed on the handle, the control switch 62 a switch button 621 and a switch operating lever 622 which are electrically connected to each other comprises.

In all embodiments of the invention, the battery assembly is preferably a lithium battery pack. It should be understood, however, that the battery assembly is not limited to lithium battery packs, but may alternatively be other types of batteries. In favor of the volume and weight of the scarifier, a lithium-ion battery is preferred here.

In addition, the DC scarifier according to the invention comprises a waste funnel 70 , at the rear end of the main body 10 behind the scarifying unit 40 is attached. During scarification or aeration of the ground surface, withered leaves or similar debris which cover the ground surface and thereby block air flow through the soil surface, can be conveyed through the scarifying unit into the garbage bin.

The operation of the DC scarifier according to the invention is as follows:
With the handle, the whole scarifier can be manually brought up to a point to be scarified. Subsequently, the switch button 621 the control unit is actuated to a turn-on command via the switch operating lever 622 to the control unit 61 forward, the control unit 61 the DC motor 52 so controls this from the battery assembly 51 is driven for rotation. Then it starts at the motor shaft 531 fixed drive wheel of the gear set to rotate and it takes due to the mesh of the drive wheel and the output gear with the output gear to the blade shaft 41 and the scarifiers 42 or the steel claws 43 the scarifying unit 40 to be put into operation.

The embodiments described above are merely preferred embodiments of the invention and by no means limit the scope of the invention. Any insubstantial change or substitution made by those skilled in the art based on the present invention falls within the scope of the invention.

Industrial Applicability

• 1. Der erfindungsgemäße Gleichstrom-Vertikutierer zeichnet sich durch einfachen Aufbau, kleine Abmessungen, geringes Gewicht und hohe Flexibilität aus und kann zur Reduzierung der Arbeitsintensität und zur Erhöhung der Arbeitsleistung beitragen. Er eignet sich für den Ackerbau und das Vertikutieren auf Hügeln, gebirgigen Geländen, kleinen Grundstücken mit großen Höhenunterschieden, Bodenflächen mit Getreide sowie in Treibhäusern.
• 2. Bei dem erfindungsgemäßen Gleichstrom-Vertikutierer ist zusätzlich eine Steuerung der Leistung des Gleichstrommotors, und zwar eine arbeitslastabhängige Steuerung der Ausgangsleistung des Elektromotors, mit Hilfe eines Steuergeräts vorgesehen, um Strom einzusparen.
• 3. Der erfindungsgemäße Gleichstrom-Vertikutierer ist leicht umzusetzen und einfach zu bedienen.

The invention offers the following advantages over the prior art:

• 1. The DC scarifier according to the invention is characterized by simple construction, small dimensions, low weight and high flexibility and can contribute to reducing the work intensity and to increase the work performance. It is suitable for arable farming and scarifying on hills, mountainous terrain, small land with large differences in height, ground surfaces with cereals and in hothouses.
• 2. In the direct current Vertikutierer invention additionally control of the power of the DC motor, namely a workload-dependent control of the output power of the electric motor, provided by means of a control device to save power.
• 3. The DC scarifier according to the invention is easy to implement and easy to use.

Claims (10)

A direct current scarifier, comprising: - a main housing ( 10 ) for receiving a scarifier main body, - a handle ( 20 ), which is connected to the main housing such that the scarifier main body can move under the action of an external force, 30 ) comprising a rear wheel set and a front wheel set and attached to the underside of the main housing, characterized in that - the scarifier main body has a scarifying unit ( 40 ), a drive device ( 50 ) for driving the scarifying unit ( 40 ) and a drive control unit for controlling the operation of the scarifying unit ( 40 ), - the drive device ( 50 ) a battery assembly ( 51 ) and one with the battery assembly ( 51 ) electrically connected DC motor, wherein in the main housing ( 10 ) a battery compartment ( 11 ) for the battery assembly ( 51 ) and a recording room ( 12 ) are formed for the DC motor, in which battery compartment ( 11 ) one for mounting the battery assembly ( 51 ) serving holder is arranged. DC scarifier according to claim 1, characterized in that the DC motor is a brushless DC motor ( 52 ), which is a motor shaft ( 531 ), one on the motor shaft ( 531 ) mounted stator ( 533 ), one with the stator ( 533 ) cooperating two-part plastic bobbin and a rotor assembly comprises. DC scarifier according to claim 2, characterized in that the rotor arrangement comprises a (1) on the outer circumference of the stator ( 533 ) located pulling housing ( 536 ), one within the drawing housing ( 536 ) and with the housing ( 536 ) co-acting cage ( 534 ) and one on the inner wall of the drawing housing ( 536 ) permanent magnet ( 535 ), which permanent magnet comprises a south pole electric sheet and a north pole electric sheet, wherein on the inner wall of the drawing housing ( 536 ) extending in the axial direction of fastening grooves for fastening the South Pole electric sheet and the North Pole electric sheet are formed, wherein the South Pole electric sheet and the North Pole electric sheet by means of the fastening grooves offset from each other on the drawing housing ( 536 ) are attached. DC scarifier according to claim 2, characterized in that the two-part plastic bobbin a first plastic bobbin ( 5321 ) and a second plastic coil carrier ( 5322 ), wherein between the first plastic coil carrier ( 5321 ) and the second plastic coil carrier ( 5322 ) is formed a ventilation duct. A DC scarifier according to claim 2, characterized in that the rotor assembly is further provided at one end of the motor shaft (10). 531 ) located fan blades ( 537 ) and arranged at the other end of the motor shaft mounting plate ( 538 ). DC scarifier according to one of claims 2 to 5, characterized in that the scarifying unit ( 40 ) a knife shaft ( 41 ) and one on the blade shaft ( 41 ) attached scaler set ( 42 ) or steel claws ( 43 ), wherein at the bottom of the main housing ( 10 ) one for fixing the blade shaft ( 41 ) serving support is arranged and the blade shaft ( 41 ) via a pulley with the motor shaft ( 531 ) of the brushless DC motor ( 52 ), which pulley set comprises a drive wheel, a driven wheel and a belt connected to the drive wheel and the driven wheel, wherein the drive wheel on the motor shaft and the driven wheel on the cutter shaft ( 41 ) is attached. DC scarifier according to one of Claims 2 to 5, characterized in that the drive control unit is a control unit ( 61 ) for controlling the output power of the DC motor and one for turning on and off the controller ( 61 ) serving control switch ( 62 ), wherein the control unit ( 61 ) with both the control switch ( 62 ) as well as with the brushless DC motor ( 52 ) is electrically connected. DC scarifier according to claim 7, characterized in that the control switch is arranged on the handle and a switch button ( 621 ) and a switch operating lever ( 622 ), which are electrically connected to each other. A DC scarifier according to any one of claims 2 to 5, characterized in that the battery assembly is a lithium battery pack. A DC scarifier according to claim 1 or 2, characterized in that the DC scarifier further comprises a waste funnel ( 70 ), which at the rear end of the main housing ( 10 ) behind the scarifying unit ( 40 ) is attached.

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