CN210513748U

CN210513748U - Multifunctional soil sampler

Info

Publication number: CN210513748U
Application number: CN201920485991.5U
Authority: CN
Inventors: 李凤民; 杜彦磊; 陈富裕
Original assignee: Lanzhou University
Current assignee: Lanzhou University
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2020-05-12
Anticipated expiration: 2029-04-11

Abstract

The utility model discloses a multi-functional soil sampling ware, including power, AC/DC DC-to-AC converter, motor, derailleur, drill bit connecting rod and drill bit, power, AC/DC DC-to-AC converter, motor, derailleur, drill bit connecting rod and drill bit connect gradually. The utility model discloses a 24 lie in the dual-purpose soil sampling ware of alternating current-direct current. When alternating current exists, the alternating current is converted into 24-volt direct current through the inverter to supply power to the motor to work, when the alternating current does not exist, the 24-volt storage battery supplies power, the net weight of a manual hand-held part is 6.7Kg, labor and time are saved, the size is small, the weight is light, and no noise exists.

Description

Multifunctional soil sampler

Technical Field

The utility model belongs to the technical field of the agricultural, specifically speaking relates to a multi-functional soil sampling ware.

Background

The soil sampler is used for sampling soil in a field. Then, the soil is subjected to physicochemical inspection and analysis, and the soil structure is analyzed, so that the purposes of protecting the soil and reasonably applying fertilizer and planting are achieved. Soil samplers are widely used in scientific research institutions and universities and colleges.

Early soil samplers all were manual sampling, and the power and time consuming, sampling efficiency is low. There are also electric soil samplers at present, but they operate sampling using gasoline power. Although labor and time are saved, the volume is large, the weight is heavy, the net weight of a manual hand-held part is about 20kg, most important is the noise of the generator, and the sampling is not suitable for long-term operation and sampling of people. For the reasons mentioned above, people still use manual sampling.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multi-functional soil sampling ware.

The technical scheme is as follows:

a multifunctional soil sampler comprises a power supply, an AC/DC inverter, a motor, a speed changer, a drill bit connecting rod and a drill bit, wherein the power supply, the AC/DC inverter, the motor, the speed changer, the drill bit connecting rod and the drill bit are sequentially connected.

Further, the power supply is an AC power supply or a DC power supply.

Further, the AC/DC inverter obtains the output of direct current voltage through a coupling transformer, then rectification, filtering, secondary filtering after voltage reduction and chopping, and the stable direct current voltage is composed of a protection circuit and a pulse width modulation driving circuit.

Further, the diameter of the drill connecting rod is 3cm, and the lengths of the drill connecting rod are 1.5m, 2m, 2.5m and 3m respectively.

Furthermore, the drill bit is a 304 stainless steel pipe and is manufactured through special hardening treatment, the diameter of the drill bit is 3.5-6 cm, and the length of the drill bit is 25 cm.

The utility model has the advantages that:

the utility model discloses a 24 lie in the dual-purpose soil sampling ware of alternating current-direct current. When alternating current exists, the alternating current is converted into 24-volt direct current through the inverter to supply power to the motor to work, when the alternating current does not exist, the 24-volt storage battery supplies power, the net weight of a manual hand-held part is 6.7Kg, labor and time are saved, the size is small, the weight is light, and no noise exists.

Drawings

Fig. 1 is a schematic structural view of a multifunctional soil sampler in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a multifunctional soil sampler in embodiment 2 of the present invention;

FIG. 3 is a schematic diagram of an inverter power supply controller;

fig. 4 is a circuit schematic diagram of an inverter power supply controller.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.

Example 1

As shown in fig. 1, 220V50HZ ac is input to an inverter power controller, the inverter power controller converts ac into fixed dc according to a required operating voltage, the dc output from the inverter power controller is input to a motor to operate the motor, and the speed of the motor is modulated by a transmission. The motor drives the drill connecting rod, and the drill is driven to work through the transmission of the drill connecting rod.

Example 2

As shown in fig. 2, in an environment without ac power, the battery dc power is directly input to the electric motor to operate the electric motor, and the speed of the electric motor operation is modulated by the transmission. The motor drives the drill connecting rod, and the drill is driven to work through the transmission of the drill connecting rod.

The inverter power supply controller works by inputting 220V50HZ alternating current into the inverter power supply controller. The stable direct current voltage is composed of a protection circuit and a pulse width modulation driving circuit.

As shown in fig. 3-4, the working principle is:

AC input coupling transformer with T of 220V50HZ

A BR rectifier: the rectifier is composed of bridge rectifier modules, and the alternating current of the coupling transformer power supply is rectified into pulse direct current.

3. A filter: the LED is composed of C1 and R1 in a pi-type isolation mode and is used for resisting interference and preventing conduction radiation.

4. Voltage reduction and chopping: the rectified and filtered pulse direct current is enabled to reach continuous direct current voltage through T2 and D3.

5. A protection circuit: t1, C2, R2, T2 and R4 are constant-current and constant-voltage protection circuits, so that the output is stable and reliable.

6. Pulse width modulation drive circuit: IC. C3, W, R3, D1 and D2 regulate pulse width duty ratio to realize stable output of direct current voltage.

An electric motor: the 24V small-sized direct current motor has small volume and low noise, the transmission speed of the motor is modulated by a speed changer, stainless steel hollow drill bit connecting rods with different lengths can be selected according to sampling requirements, the diameter of each drill bit connecting rod is 3cm, and the lengths of the drill bit connecting rods are 1.5m, 2m, 2.5m and 3m respectively. The drill bit is a 304 stainless steel pipe and is manufactured by special hardening treatment, the diameter of the drill bit is 3.5-6 cm, and the length of the drill bit is 25 cm.

Multifunctional soil sampling ware is in concrete application process, including following step:

step 1, under the environment with alternating current, 220V alternating current is input into an inverter power supply controller, 24V direct current voltage is obtained by the inverter power supply controller to be supplied to a motor to work, the transmission speed of the motor is modulated by a speed changer, and then a drill bit connecting rod and a drill bit are driven to sample soil.

And 2, supplying power by a 24-volt storage battery in the environment without alternating current. A24V storage battery is connected into a motor, so that the motor works, the transmission speed of the motor is modulated by a speed changer, and then a drill bit connecting rod and a drill bit are driven to sample soil.

And 3, selecting the drill bit connecting rod, wherein the lengths of the drill bit connecting rod can be 1.5m, 2m, 2.5m and 3m according to sampling requirements.

Selection of a drill bit: the diameter of the drill bit can be selected to be 3.5-6 cm according to the sampling requirement, and the length of the drill bit is 25 cm.

The above description is only a preferred embodiment of the present invention, the protection scope of the present invention is not limited thereto, and any person skilled in the art can obviously obtain simple changes or equivalent replacements of the technical solutions within the technical scope of the present invention.

Claims

1. A multifunctional soil sampler is characterized in that: the drilling machine comprises a power supply, an AC/DC inverter, a motor, a transmission, a drill bit connecting rod and a drill bit, wherein the power supply, the AC/DC inverter, the motor, the transmission, the drill bit connecting rod and the drill bit are sequentially connected.

2. The multifunctional soil sampler of claim 1, wherein: the power supply is an AC power supply or a DC power supply.

3. The multifunctional soil sampler of claim 1, wherein: the diameter of the drill bit connecting rod is 3cm, and drill bit connecting rods with different lengths are selected according to sampling requirements.

4. The multifunctional soil sampler of claim 1, wherein: the drill bit is a 304 stainless steel pipe, the diameter of the drill bit is 3.5-6 cm, and the length of the drill bit is 25 cm.