CN114589660A

CN114589660A - Electric hammer electric pick and control method thereof

Info

Publication number: CN114589660A
Application number: CN202210093905.2A
Authority: CN
Inventors: 童世鹤
Original assignee: Zhejiang Linghang Electromechanical Co ltd
Current assignee: Zhejiang Linghang Electromechanical Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-06-07

Abstract

The invention discloses an electric hammer electric pick and a control method thereof, wherein the electric hammer electric pick comprises a main controller, a control module and a control module, wherein the main controller is used for controlling the working mode of an electric hammer and processing working data; the monitoring module is connected with the main controller and is used for monitoring the working state of the electric hammer during working; the adjusting module is connected with the main controller and is used for adjusting the working mode of the equipment; the voltage detection and the lacuna item detection can be carried out on the working electric hammer, and the power of the electric hammer is controlled by controlling the working time of the electric hammer so as to control the energy consumption of the electric hammer.

Description

Electric hammer electric pick and control method thereof

Technical Field

The invention relates to the field of electric hammer equipment, in particular to an electric hammer electric pick and a control method thereof.

Background

The electric hammer is an electric construction tool with wide application, and is named as an electric hammer because a piston driven by a motor and provided with a crankshaft connecting rod is added on the basis of an electric drill, air is compressed in a cylinder in a reciprocating mode, air pressure in the cylinder is changed periodically, and the changed air pressure drives a hammer in the cylinder to strike the top of a drill bit in a reciprocating mode, namely the hammer strikes the drill bit. Electric hammers, which are a type of electric drill, are widely used for rapidly drilling holes in materials such as concrete, floor slabs, brick walls, stone and the like, which have high brittleness, because a drill bit of the electric hammer rotates and simultaneously generates rapid reciprocating motion along the direction of the drill bit.

For example, a chinese patent document discloses "a method of controlling an electric hammer and an electric hammer", and its publication no: CN112091898A discloses monitoring real-time current and load current threshold to monitor the rotation speed of the electric hammer for the purpose of reducing noise and current consumption, but this solution does not allow for controlling the electric hammer by controlling the high power time through the controller.

Disclosure of Invention

Therefore, the invention provides the electric hammer electric pick and the control method thereof, which can carry out voltage detection and lacuna item detection on the working electric hammer and control the power of the electric hammer by controlling the working time of the electric hammer so as to control the energy consumption of the electric hammer.

In order to achieve the above purpose, the invention provides the following technical scheme:

an electric hammer electric pick comprises a main controller, a main controller and a control module, wherein the main controller is used for controlling the working mode of an electric hammer and processing working data; the monitoring module is connected with the main controller and is used for monitoring the working state of the electric hammer during working; and the adjusting module is connected with the main controller and is used for adjusting the working mode of the equipment. The working state of the electric hammer can be detected in real time and controlled, and the rotating speed power is adjusted when a load exists.

Preferably, the monitoring module comprises a time monitoring module and a rotating speed monitoring module and is used for monitoring the working time at different rotating speeds; and the power monitoring module is used for monitoring the power of the whole machine. The time monitoring module comprises a timing circuit, can perform timing when the working mode is changed, and transmits timing data corresponding to the working mode to the main controller. The monitoring module also comprises a voltage detection module and an item missing detection module, and sends corresponding working state data to the main processor.

Preferably, the regulating module comprises a current controller for controlling the magnitude of the current to control the speed and power. The main controller reduces the rotating speed and the power by controlling the current, thereby controlling the energy consumption of the electric hammer.

Preferably, a thermistor is connected after the main control, and the thermistor is an NTC thermistor with an epoxy resin head and a CP lead. The temperature of main control unit can be detected, the temperature rise of the main control unit is monitored, and the safety is improved.

A control method for an electric hammer and an electric pick comprises the following steps:

s1, setting a working mode;

and S2, adjusting the rotating speed to change the working mode. Setting the working modes to be idle load and load, wherein when the working modes are idle load, the rotating speed is set to be N1, and the power is set to be W1; during load, the rotating speed is set to be N2, the power is set to be N2, and the rotating speed is N2> N1; the load time threshold is set to T1, and the controller controls the speed change when the operating mode needs to be changed, and the speed is increased only once in each switch. Avoiding frequent shutdowns.

Preferably, S2 includes:

s21, detecting the power of the whole machine;

and S22, detecting the working time. When the controller detects that the power of the whole machine is larger than W1 when the machine meets a load, the controller controls the motor to increase the rotating speed of the machine to N2, and after the machine works for T1 at the rotating speed of N2, the controller controls the motor to return to the normal working rotating speed of N1.

Preferably, in S21, the operation mode is adjusted when the total power is greater than the set value. When the controller detects a total machine power > W1 when the machine encounters a load, the adjustment mode of operation changes from no load to a load.

Preferably, in S22, the duration of the adjusted operation mode is detected, and when both the duration of the adjusted operation mode and the overall power reach the threshold, the operation mode is changed again. After the working time T1 under the speed of N2, the controller controls the motor to recover the normal working speed N1. So that the high power time is controlled to control the energy consumption of the electric hammer.

The embodiment of the invention has the following advantages:

(1) the device can perform voltage detection and lacuna item detection on the working electric hammer, and control the power of the electric hammer by controlling the working time of the electric hammer so as to control the energy consumption of the electric hammer; (2) and only one rotating speed is increased between the start and the stop of each work, so that the machine cannot be stopped due to frequent speed increase.

Drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the invention, and do not limit the limit conditions of the invention, so that the invention has no technical essence, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the technical contents disclosed in the invention without affecting the efficacy and the achievable purpose of the invention.

FIG. 1 is a system block diagram of the present invention.

FIG. 2 is a diagram of the method steps of the present invention.

In the figure:

1-a main controller; 2-a monitoring module; and 3-adjusting the module.

Detailed Description

While embodiments of the present invention will be described with reference to particular embodiments, those skilled in the art will readily appreciate that the present invention has additional advantages and benefits that may be realized from the teachings herein, and that the embodiments described are only a few, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-2, in a preferred embodiment, the present invention discloses an electric hammer electric pick, which comprises a main controller for controlling the working mode of the electric hammer and processing the working data; the monitoring module is connected with the main controller and is used for monitoring the working state of the electric hammer during working; and the adjusting module is connected with the main controller and is used for adjusting the working mode of the equipment. The working state of the electric hammer can be detected in real time and controlled, and the rotating speed power is adjusted when a load exists.

The monitoring module comprises a time monitoring module and a rotating speed monitoring module and is used for monitoring the working time at different rotating speeds; and the power monitoring module is used for monitoring the power of the whole machine. The time monitoring module comprises a timing circuit, can perform timing when the working mode is changed, and transmits timing data corresponding to the working mode to the main controller. The monitoring module also comprises a voltage detection module and an item missing detection module, and sends corresponding working state data to the main processor.

The regulating module comprises a current controller for controlling the current magnitude to control the rotation speed and the power. The main controller reduces the rotating speed and the power by controlling the current, thereby controlling the energy consumption of the electric hammer.

And a thermistor is also connected behind the main control, and the thermistor is an NTC thermistor with an epoxy resin head and a CP lead. The temperature of main control unit can be detected, the temperature rise of the main control unit is monitored, and the safety is improved.

s1, setting a working mode;

S2 includes:

s21, detecting the power of the whole machine;

And S21, adjusting the working mode when the power of the whole machine is larger than a set value. When the controller detects a total machine power > W1 when the machine encounters a load, the adjustment mode of operation changes from no load to a load.

And S22, detecting the duration of the adjusted working mode, and changing the working mode again when the duration of the adjusted working mode and the power of the whole machine reach the threshold value. After working time T1 at the speed of N2, the controller controls the motor to recover to normal working speed N1. So that the high power time is controlled to control the energy consumption of the electric hammer.

In another embodiment of the present invention, the substrate is,

the working mode is as follows: the machine speed is preset to be N1 in the normal working mode of the machine, and the speed is N2> N1. No load power W1.

The running state of the whole machine is controlled by the controller. When the machine is in an idle state, the rotating speed is N1, and the power is W1. When the controller detects that the power of the whole machine is larger than W1 when the machine meets a load, the controller controls the motor to increase the rotating speed of the machine to N2, and after the machine works for T1 at the rotating speed of N2, the controller controls the motor to return to the normal working rotating speed of N1. And the rotating speed is increased only once in each switch of the switch.

Power boosting is the duty cycle of increasing PWM (conduction time on the IGBT (thyristor)).

The value of W1 is 500-800W

N1=24000 turns, N2=26000-28000 turns

The whole operation state of the machine is controlled by the controller, and the controller is controlled by the control program programmed by the controller, so that the whole operation state of the machine is controlled by the control program. Time T1 is the set point, T1 is in the range of 3-10 s.

If the operation time exceeds T1 in the load state, the controller reduces the rotating speed and the power by controlling the current; if the running time under the load state is less than T1, the running time is less than T1 unless the time is caused by shutdown, the working cycle is repeated after the next startup after the shutdown, the startup is no-load, the rotation speed power is increased-the rotation speed power lasts for 8S, and the rotation speed power is decreased.

It should be noted that the whole machine is ac brushless, the control of the motor rotation speed is closed-loop control, the detection of the rotation speed is very accurate, and the control mode switching is also completely controlled by the control program in the controller, which is very simple. The time T1 is only a high speed state and will not switch frequently during the time T1 unless shut down. The pseudo-differential distribution line RS1 time permits a kelvin connection.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. An electric hammer and electric pick is characterized by comprising a main controller; the monitoring module is connected with the main controller and is used for monitoring the working state of the electric hammer during working; and the adjusting module is connected with the main controller and is used for adjusting the working mode of the equipment.

2. An electric hammer and pick as claimed in claim 1, wherein the monitoring module comprises a time monitoring module and a rotational speed monitoring module for monitoring the working time at different rotational speeds; and the power monitoring module is used for monitoring the power of the whole machine.

3. An electric hammer and pick according to claim 1 or claim 2 wherein the adjustment module includes a current controller for controlling the magnitude of the current to control the speed and power of the electric hammer and pick.

4. The electric hammer and pick of claim 1, wherein a thermistor is further connected to the main controller, and the thermistor is an NTC thermistor having an epoxy head and a CP lead.

5. A control method for an electric hammer and electric pick, which is suitable for an electric hammer and electric pick as claimed in claims 1 to 4, and which comprises the following steps:

s1, setting a working mode;

and S2, adjusting the rotating speed to change the working mode.

6. A control method for an electric hammer and pick as claimed in claim 3, wherein said S2 includes:

s21, detecting the power of the whole machine;

and S22, detecting the working time.

7. The control method of an electric hammer and pick as claimed in claim 6, wherein in S21, the operation mode is adjusted when the total power is greater than a set value.

8. A control method for an electric hammer and pick as claimed in claim 6 or 7, wherein in S22, the duration of the adjusted operation mode is detected, and when the duration of the adjusted operation mode and the power of the whole hammer reach the threshold value, the operation mode is changed again.