CN214445924U - Electric wrench - Google Patents
Electric wrench Download PDFInfo
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- CN214445924U CN214445924U CN202023244430.8U CN202023244430U CN214445924U CN 214445924 U CN214445924 U CN 214445924U CN 202023244430 U CN202023244430 U CN 202023244430U CN 214445924 U CN214445924 U CN 214445924U
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Abstract
The utility model discloses an electric wrench, which comprises a main cabin, an electric control cabin and a battery box; the main cabin is a main structure part of the electric wrench, and a motor, a speed reducer, a torque sensor, an encoder, a display panel, a temperature sensor, a cooling fan and an end effector are arranged in the main cabin; the electric control cabin is a driving and controlling part of the electric wrench, and a driver, a control panel and a function switch are arranged in the electric control cabin; the battery box is a power supply part of the wrench, and a battery management module are installed in the battery box; the control panel is respectively and electrically connected with the battery management module, the function switch, the encoder, the torque sensor, the driver, the display panel, the temperature sensor and the cooling fan; the battery is electrically connected with the battery management module; the driver is electrically connected with the motor; the speed reducer is respectively electrically connected with the motor and the end effector; the end effector is respectively connected with the torque sensor and the encoder. The utility model discloses the volume is less, and the operation is portable, and the torque control precision is high, and the function is perfect, adaptable different application scenario.
Description
Technical Field
The utility model relates to a mechano-electronic technology field, concretely relates to electric spanner.
Background
An electric wrench is an electrical tool used to tighten or loosen bolts and nuts. In the mechanical production and processing, most of equipment parts are fastened and connected by bolts and nuts. Bolt joints are often "under tightened" and "over tightened" and must therefore be suitable for applying a pre-tightening force during the tightening of the bolt. With the gradual improvement of the industrial automation degree, the electric wrench efficiently replaces the traditional manual operation and is widely used for manufacturing and maintaining equipment in various industries. The electric wrench should satisfy several conditions: firstly, the bolt fastening function is realized; secondly, the size of the torsion can be adjusted to match the connection tightness of different devices; thirdly, the device can be ensured not to be damaged by starting and stopping impact; and fourthly, the device accords with human engineering and is convenient for manual operation.
The manufacturing technology of foreign electric wrenches is advanced, occupies 80 percent of related markets in China, and is very expensive. Domestic electric spanners are still relatively backward, mainly use hydraulic type or pneumatic type large-scale bolt tightening spanner as the main, and its equipment is heavy, the operability is poor, and portable electric spanner product is few, and its torque range is limited and the precision is relatively poor, is difficult to satisfy the user demand of many trades.
The prior electric wrench has the technical defects that:
1) the torque control precision is low, the torque adjustment range is narrow, and the device is difficult to adapt to the pretightening force requirements of different application places.
2) The bolt tightening process cannot be monitored, and log recording is performed so as to facilitate future tracing.
3) And a communication interface for external docking is lacked, so that information management is inconvenient.
SUMMERY OF THE UTILITY MODEL
In view of this, in order to solve the above-mentioned problem among the prior art, the utility model provides an electric wrench, its volume is less, and the operation is portable, and the torque control precision is high, and the function is perfect, adaptable different application.
The utility model discloses an above-mentioned problem is solved to following technical means:
an electric wrench comprises a main body cabin, an electric control cabin and a battery box;
the main cabin is an electric wrench main structure part, and a motor, a speed reducer, a torque sensor, an encoder, a display panel, a temperature sensor, a cooling fan and an end effector are arranged in the main cabin;
the electric control cabin is a driving and controlling part of the electric wrench, and a driver, a control panel and a function switch are installed in the electric control cabin;
the battery box is a power supply part of the whole wrench, and a battery management module are installed in the battery box;
the control panel is respectively and electrically connected with the battery management module, the function switch, the encoder, the torque sensor, the driver, the display panel, the temperature sensor and the cooling fan;
the battery is electrically connected with the battery management module;
the driver is electrically connected with the motor;
the speed reducer is respectively electrically connected with the motor and the end effector;
and the end effector is respectively connected with the torque sensor and the encoder.
Further, the display panel comprises a display screen and a parameter setting button; the display screen and the parameter setting button are electrically connected with the control panel.
Furthermore, the control panel comprises a microcontroller, an audible and visual alarm circuit, a fan driving circuit, a fan interface, a WiFi/Bluetooth interface, a USB interface, a TF card storage interface, a motor control isolation circuit, a motor control interface, a torque sensor interface, an encoder interface, a torque gear switch interface and a start-stop speed switch interface;
the microcontroller is respectively and electrically connected with the sound-light alarm circuit, the fan driving circuit, the WiFi/Bluetooth interface, the USB interface, the TF card storage interface, the motor control isolation circuit, the torque sensor interface, the encoder interface, the torque gear switch interface and the start-stop speed switch interface;
the fan interface is respectively electrically connected with the fan driving circuit and the heat dissipation fan;
the motor control interface is respectively electrically connected with the motor control isolation circuit and the driver;
the torque sensor interface is electrically connected with the torque sensor;
the encoder interface is electrically connected with the encoder;
the torque gear switch interface and the start-stop speed switch interface are electrically connected with the function switch.
Further, the motor is a brushless DC motor.
Further, the battery is a lithium battery.
Further, the encoder is a magnetic encoder.
Further, the display screen is a TFT liquid crystal display screen.
Compared with the prior art, the beneficial effects of the utility model include at least:
the utility model discloses electric spanner volume is less, and the operation is portable, and torque control precision is high, and the function is perfect, adaptable different application scenario. This electric spanner can control moment of torsion size and rotation angle wantonly, has overheated control, battery power monitoring, moment of torsion overload restriction function, has the process of screwing up tracking function, supports bolt tightening process working log to preserve, supports USB to read the log, has bluetooth module or WIFI module, supports to connect machine position system and MES management system through the thing networking.
The utility model adds the torque sensor and the encoder, which can more accurately control and track the output torque and the rotation angle of the wrench; WiFi/Bluetooth is added, and the Internet of things or an automatic production line can be connected; the TF card is added for storage, so that the state data in the tightening process of each bolt can be recorded, and the tracing is convenient in the future.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of the electric wrench of the present invention;
fig. 2 is a schematic diagram of the control panel of the present invention;
FIG. 3 is an electric control schematic diagram of the electric wrench of the present invention;
fig. 4 is a circuit diagram of the microprocessor of the present invention;
fig. 5 is a circuit diagram of the liquid crystal display panel of the present invention;
FIG. 6 is a circuit diagram of a regulated power supply circuit of the present invention;
fig. 7 is a circuit diagram of the battery voltage detection circuit of the present invention;
FIG. 8 is a circuit diagram of the acousto-optic warning circuit of the present invention;
fig. 9 is a circuit diagram of the fan driving circuit of the present invention;
fig. 10 is a circuit diagram of the fan interface of the present invention;
fig. 11 is a circuit diagram of the motor control isolation circuit of the present invention;
fig. 12 is a circuit diagram of the motor control interface of the present invention;
fig. 13 is a circuit diagram of the WiFi/bluetooth interface of the present invention;
fig. 14 is a circuit diagram of the TF card storage interface of the present invention;
fig. 15 is a circuit diagram of an encoder interface of the present invention;
fig. 16 is a circuit diagram of the start-stop speed switch interface of the present invention;
fig. 17 is a circuit diagram of the torque position switch interface of the present invention;
fig. 18 is a circuit diagram of the torque sensor interface of the present invention;
fig. 19 is a circuit diagram of the USB interface of the present invention.
Description of reference numerals:
1. an end effector; 2. a torque sensor; 3. a speed reducer; 4. a DC brushless motor; 5. an encoder; 6. a function switch; 7. a display panel; 8. a heat radiation fan; 9. a temperature sensor; 10. a driver; 11. a control panel; 12. a battery case.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanying the drawings are described in detail below. It should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
As shown in fig. 1, the utility model discloses an electric wrench, which comprises a main body cabin, an electric control cabin and a battery box 12. The main body cabin is an electric wrench main body structure part, and a direct current brushless motor 4, a speed reducer 3, a torque sensor 2, an encoder 5, a liquid crystal display panel 7, a temperature sensor 9, a fan and an end effector 1 are installed in the main body cabin. The electric control cabin is a driving and controlling part of the electric wrench, and a driver 10, a control panel 11 and a function switch 6 are installed in the electric control cabin. The battery case 12 is a power supply part of the entire wrench, and a lithium battery and a battery management module are mounted therein.
As shown in fig. 2 to 19, the control board 11 is electrically connected to the battery management module, the function switch 6, the encoder 5, the torque sensor 2, the driver 10, the display panel 7, the temperature sensor 9, and the cooling fan 8, respectively; the lithium battery is electrically connected with the battery management module; the driver 10 is electrically connected with the direct current brushless motor 4; the speed reducer 3 is respectively and electrically connected with the direct current brushless motor 4 and the end effector 1; the end effector 1 is connected to a torque sensor 2 and an encoder 5.
In the main cabin, the brushless DC motor 4 is an electric wrench driving part, adopts an outer rotor type, has high power and low noise, and is mainly responsible for driving the wrench end effector 1 to act. The speed reducer 3 is an electric wrench torque and speed transmission part, adopts the planetary speed reducer 3, has small size, and is mainly responsible for increasing the torque of the wrench end effector 1 and reducing the speed of the direct-current brushless motor 4. The torque sensor 2 is a torque detection component of the electric wrench, and is mainly responsible for measuring the current output torque of the wrench end effector 1. Encoder 5 is electric wrench angle detection part, adopts magnetic encoder 5, need not to link to each other with the motor shaft is direct, mainly is responsible for measuring the rotation angle of spanner end effector 1. The liquid crystal display panel 7 is an electric wrench display and setting unit, and comprises a 1.44-inch TFT liquid crystal display screen and a parameter setting button, wherein the liquid crystal display screen and the parameter setting button are electrically connected with the control panel 11 and are mainly responsible for setting working parameters of the wrench and displaying working states. The temperature sensor 9 is a temperature detection unit of the electric wrench, adopts DS18B20, and is mainly responsible for detecting the temperature in the wrench cabin body and measuring the current temperature state of the motor and the driver 10. The cooling fan 8 is an electric wrench cooling part, and adopts a notebook mainboard similar to the high-speed cooling fan 8, and is mainly responsible for cooling the motor. The end effector 1 is an execution part for screwing a bolt by an electric wrench, is directly butted with the bolt, and can be correspondingly replaced according to the type of the head of the bolt.
In the electric control cabin, the driver 10 is a driving board of the dc brushless motor 4, and is responsible for driving the dc brushless motor 4 to act, so as to control the rotation speed, angle and torque of the motor. The control panel 11 is a control unit of the electric wrench, and mainly comprises a microcontroller, an audible and visual alarm circuit, a fan driving circuit, a fan interface, a WiFi/Bluetooth interface, a USB interface, a TF card storage interface, a motor control isolation circuit, a motor control interface, a torque sensor interface, an encoder interface, a torque gear switch interface and a start-stop speed switch interface; the microcontroller is respectively and electrically connected with the sound-light alarm circuit, the fan driving circuit, the WiFi/Bluetooth interface, the USB interface, the TF card storage interface, the motor control isolation circuit, the torque sensor interface, the encoder interface, the torque gear switch interface and the start-stop speed switch interface; the fan interface is respectively electrically connected with the fan driving circuit and the heat radiation fan 8; the motor control interface is respectively electrically connected with the motor control isolation circuit and the driver 10; the torque sensor interface is electrically connected with the torque sensor 2; the encoder interface is electrically connected with the encoder 5; the torque gear switch interface and the start-stop speed switch interface are electrically connected with the function switch 6. The control panel 11 is mainly responsible for monitoring the wrench state, controlling the dc brushless motor 4, collecting various sensor data, alarming indication, data parameter storage and display, and communicating with an upper computer, etc. The microcontroller adopts an ARM processor and is mainly responsible for communication between operation and each functional module. The WiFi/Bluetooth interface adopts a module integrating WiFi and Bluetooth and is responsible for communicating with an upper computer, and the upper computer can be a computer or a mobile phone and is convenient to incorporate into an automatic production line. The sound-light alarm circuit comprises a buzzer and an LED lamp and is mainly responsible for warning the working state of the wrench, and prompting when overload, overhigh temperature, undervoltage battery and the like. The TF card storage interface stores the working parameters and the working state information, and is responsible for recording data in the process of screwing each bolt, so that the TF card storage interface is convenient to trace back in the future. The USB interface is responsible for the host computer to read the working data file stored in the TF card and upgrade the firmware. The function switch 6 comprises a wrench start-stop switch, a wrench steering control switch and a main gear control rotary switch, and is mainly responsible for speed regulation and direction control of the wrench end effector 1.
In the battery box 12, the lithium battery is mainly responsible for supplying power to the whole electric wrench. The battery management module is mainly responsible for detection and charge-discharge control of battery voltage, and the control panel 11 is used for collecting the battery voltage value and prompting the charging requirement when the battery voltage value is lower than the working voltage.
The utility model discloses electric spanner volume is less, and the operation is portable, and torque control precision is high, and the function is perfect, adaptable different application scenario. This electric spanner can control moment of torsion size and rotation angle wantonly, has overheated control, battery power monitoring, moment of torsion overload restriction function, has the process of screwing up tracking function, supports bolt tightening process working log to preserve, supports USB to read the log, has bluetooth module or WIFI module, supports to connect machine position system and MES management system through the thing networking.
The utility model adds the torque sensor and the encoder, which can more accurately control and track the output torque and the rotation angle of the wrench; WiFi/Bluetooth is added, and the Internet of things or an automatic production line can be connected; the TF card is added for storage, so that the state data in the tightening process of each bolt can be recorded, and the tracing is convenient in the future.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (7)
1. An electric wrench is characterized by comprising a main body cabin, an electric control cabin and a battery box;
the main cabin is an electric wrench main structure part, and a motor, a speed reducer, a torque sensor, an encoder, a display panel, a temperature sensor, a cooling fan and an end effector are arranged in the main cabin;
the electric control cabin is a driving and controlling part of the electric wrench, and a driver, a control panel and a function switch are installed in the electric control cabin;
the battery box is a power supply part of the whole wrench, and a battery management module are installed in the battery box;
the control panel is respectively and electrically connected with the battery management module, the function switch, the encoder, the torque sensor, the driver, the display panel, the temperature sensor and the cooling fan;
the battery is electrically connected with the battery management module;
the driver is electrically connected with the motor;
the speed reducer is respectively electrically connected with the motor and the end effector;
and the end effector is respectively connected with the torque sensor and the encoder.
2. The electric wrench as claimed in claim 1, wherein the display panel includes a display screen and a parameter setting button; the display screen and the parameter setting button are electrically connected with the control panel.
3. The electric wrench as claimed in claim 1, wherein the control board includes a microcontroller, an audible and visual alarm circuit, a fan drive circuit, a fan interface, a WiFi/bluetooth interface, a USB interface, a TF card storage interface, a motor control isolation circuit, a motor control interface, a torque sensor interface, an encoder interface, a torque gear switch interface, and a start-stop speed switch interface;
the microcontroller is respectively and electrically connected with the sound-light alarm circuit, the fan driving circuit, the WiFi/Bluetooth interface, the USB interface, the TF card storage interface, the motor control isolation circuit, the torque sensor interface, the encoder interface, the torque gear switch interface and the start-stop speed switch interface;
the fan interface is respectively electrically connected with the fan driving circuit and the heat dissipation fan;
the motor control interface is respectively electrically connected with the motor control isolation circuit and the driver;
the torque sensor interface is electrically connected with the torque sensor;
the encoder interface is electrically connected with the encoder;
the torque gear switch interface and the start-stop speed switch interface are electrically connected with the function switch.
4. The power wrench as claimed in claim 1, wherein the motor is a dc brushless motor.
5. The power wrench as claimed in claim 1, wherein the battery is a lithium battery.
6. The power wrench of claim 1, wherein the encoder is a magnetic encoder.
7. The electric wrench of claim 2, wherein the display screen is a TFT liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023244430.8U CN214445924U (en) | 2020-12-29 | 2020-12-29 | Electric wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023244430.8U CN214445924U (en) | 2020-12-29 | 2020-12-29 | Electric wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214445924U true CN214445924U (en) | 2021-10-22 |
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ID=78108526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023244430.8U Active CN214445924U (en) | 2020-12-29 | 2020-12-29 | Electric wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214445924U (en) |
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2020
- 2020-12-29 CN CN202023244430.8U patent/CN214445924U/en active Active
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