CN109015506B - Digital display torque wrench and operation method thereof - Google Patents
Digital display torque wrench and operation method thereof Download PDFInfo
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- CN109015506B CN109015506B CN201810893408.4A CN201810893408A CN109015506B CN 109015506 B CN109015506 B CN 109015506B CN 201810893408 A CN201810893408 A CN 201810893408A CN 109015506 B CN109015506 B CN 109015506B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/18—Devices for illuminating the head of the screw or the nut
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses a digital display torque wrench and an operation method thereof, relates to the technical field of torque wrenches, and aims to solve the problems that the existing digital display torque wrench is poor in compatibility of use scenes and not beneficial to accurate operation. The key points of the technical scheme are that a torque sensor is arranged on a pulling part, a main control board is arranged in a handle, and a key module, a digital display module and an indication module which are connected with the main control board are arranged on the handle. The indicating module comprises a first indicating lamp and a plurality of second indicating lamps, and the main control board is used for controlling the second indicating lamps to be sequentially lightened according to the increase of the torque value detected by the torque sensor before the torque value detected by the torque sensor reaches a set target torque value; the main control board is also used for controlling the first indicator light to light up when the torque value detected by the torque sensor reaches the set target torque value, and has the advantages of good use scene compatibility and high operation accuracy.
Description
Technical Field
The invention relates to the technical field of torque wrenches, in particular to a digital display torque wrench and an operation method thereof.
Background
The wrench is a common mounting and dismounting tool, and is a manual tool for screwing bolts, screws, nuts and other screw threads to tightly hold open or trepanning fasteners of the bolts or nuts by utilizing the lever principle. In some high-precision machines, the removal of each screw lock component has a certain procedure and proper torque operation requirement, and if the operation is careless, the screw lock component or the screw hole may be damaged or the operation function and precision of the machine itself may be damaged, but the existing hand tool cannot display the torque in real time during the force application operation, so that the user cannot know the actual force application torque value. In view of the above, it is desirable to design a digital display torque wrench capable of displaying a torque value during operation in real time.
Based on the above requirements, there are related products, most typically, a digital torque wrench structure and a method for equalizing force of a grip thereof, which are disclosed in chinese patent with publication number "CN 201010243592.1", and include a pulling part; one end of the sensor is connected with the wrenching part, two sides of the sensor are respectively embedded with two strain gauges, and adjusting holes are respectively arranged at two ends adjacent to the sensor in a penetrating way; one end of the connecting rod is connected with one end of the sensor far away from the wrenching part; the handle is connected with one end of the connecting rod, which is far away from the sensor; and the digital display is arranged on the connecting rod or the handle and is electrically connected with the sensor so as to display the torque force value of the sensor.
However, the digital torque wrench does not have the function of torque value reminding, and the torque value displayed on the digital display is inconvenient to observe through naked eyes due to the fact that the use angle and the use posture are not fixed when the digital torque wrench is used, so that the situation that a screw lock assembly or a screw hole is broken and damaged due to careless operation is easy to occur, the operation function and the precision of the machine are further influenced, the compatibility of a use scene is poor, and the problem needs to be solved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a digital display torque wrench which has the advantages of good compatibility of use scenes and high operation accuracy.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a digital display torque wrench, includes pulling portion, handle and connects the connecting rod between pulling portion and handle, still includes: a torque sensor carried on the pulling part and used for detecting an operation torsion value; the digital display module is arranged on the handle and used for displaying the torque value detected by the torque sensor; the main control board is loaded in the handle, connected with the torque sensor and the digital display module and used for controlling the operation of the digital display module; the key module is arranged on the handle, connected with the main control board and used for setting a target torsion value; the indicating module is arranged on the handle, connected with the main control board and used for sending an indicating signal; the indicating module comprises a first indicating lamp and a plurality of second indicating lamps; the main control board is used for controlling the second indicator lamps to light up sequentially according to the increase of the torque value detected by the torque sensor before the torque value detected by the torque sensor reaches a set target torque value; the main control board is also used for controlling the first indicator light to light up when the torque value detected by the torque sensor reaches a set target torque value.
By adopting the technical scheme, the digital display module can display the torsion value in the operation process in real time, so that an operator can observe the torsion condition conveniently. The target torsion force value can be set through the arrangement of the key module, so that the indicating module sends an indicating signal when the indicating module is about to reach the set target torsion force value and the set target torsion force value. The indicating module is set to be the first indicating lamp and the second indicating lamps, so that when the torque value detected by the torque sensor does not reach the set target torque value, the second indicating lamps can be sequentially lightened according to the larger and larger torque value detected by the torque sensor, and the torque indicating module has the function of conveniently reminding an operator of the current torque condition. When the torque value detected by the torque sensor reaches the set target torque value, the first indicator light is turned on, so that an operator is reminded that the current torque value reaches the set value. The first indicator light and the second indicator light can be set to different colors, so that the operator can observe the indicator lights more conveniently.
Furthermore, the main control board comprises a controller, an analog-to-digital conversion module, a power supply module and a power supply input module; the power supply module is connected with the power input module, and the power input module is connected with the controller, the analog-to-digital conversion module and the indication module; the moment sensor is connected with the analog-digital conversion module, and the analog-digital conversion module, the key module, the indicating module and the digital display module are all connected with the controller.
By adopting the technical scheme, the torque sensor transmits the signal to the controller through the analog-to-digital conversion module, so that the torque value can be displayed in real time by the display module. Through the power supply module and the power input module, stable direct current can be provided for the controller, the analog-to-digital conversion module, the indication module and the like, so that the whole system can work stably.
Further, the power input module comprises a self-locking module and a voltage stabilizing module, and the key module comprises a first key; the power supply module is connected with one end of the first key and the voltage stabilizing module, and the self-locking module is connected with the other end of the first key, the voltage stabilizing module and the controller; when the first key is pressed down, the voltage stabilizing module supplies power to the self-locking module and the controller; the controller is used for controlling the voltage stabilizing module to continue to operate after the first key is released.
By adopting the technical scheme, the voltage stabilizing module can convert the power supply into stable direct current, such as stable 3.3V direct current. When the first key is pressed down, the enabling end of the power supply module and the voltage stabilizing module is connected, and the voltage stabilizing module starts to work, so that power is supplied to the controller and the self-locking module. Meanwhile, after the controller detects that the first key is pressed down, the controller outputs a control signal to the enabling end of the voltage stabilizing module, so that the voltage stabilizing module can continue to work after the first key is loosened, and the controller can continue to work. Namely, the system is started after the first key is pressed for a short time.
Furthermore, the digital display module comprises an LCD (liquid crystal display) screen and a backlight lamp, and the main control board further comprises a backlight control module for turning on the backlight lamp; the backlight control module is connected with the power input module, the digital display module and the controller, and the controller is used for controlling the operation or the closing of the backlight control module.
Through adopting above-mentioned technical scheme, the control module in a poor light can control opening and closing of backlight to make digital display torque wrench can adapt to the environment at night and that light is not enough, the practicality is good.
Furthermore, the main control board also comprises a buzzing module connected with the controller and the power input module; the controller is used for controlling the buzzing module to send out a buzzing signal when the first second indicating lamp is turned on.
By adopting the technical scheme, the buzzing module has a prompting function, and when the torque value detected by the torque sensor reaches the torque value range corresponding to the target torque value and the first second indicator lamp is lightened, the buzzing module sends out a buzzing signal so as to remind a user to observe the lightening condition of each indicator lamp on the indicating module.
Further, the controller includes a comparison module; the comparison module is used for controlling the buzzing module to send out a buzzing signal when the first second indicator light is turned on; the comparison module is also used for controlling the buzzing module to correspondingly accelerate the frequency of the buzzing signal when the torque value detected by the torque sensor is increased.
Through adopting above-mentioned technical scheme, when the torsion value grow that torque sensor detected, the frequency that buzzing module sent the signal of chirping is also faster and faster, has the effect of reminding the operator to observe that each pilot lamp lights the condition on the one hand, and on the other hand also has the torsion value that can remind current detection effect bigger and bigger.
Furthermore, the controller also comprises a trigger module and a unit selection module used for changing the unit of the torque force value displayed by the digital display module, and the key module also comprises a second key, a third key, a fourth key and a fifth key; the third key is a lower key, and the fourth key is an upper key; the triggering module is used for controlling the unit selection module to operate when a second key is pressed for a short time; the triggering module is also used for controlling the backlight control module to operate or close when the fifth key is pressed for a short time.
By adopting the technical scheme, different unit display modes can be adjusted by short pressing of the second key, so that the device can adapt to different use environments. By pressing the fifth key for a short time, the operation or the closing of the backlight control module can be controlled. The third button is a lower button, the fourth button is an upper button, and the adjustment of the set target torsion value and the use in other operations can be realized through the third button and the fourth button.
Further, the controller further comprises a mode selection module, and the mode selection module is used for changing the working mode of the digital display torque wrench and controlling the digital display module to display corresponding working mode information when the mode selection module operates and presses a third key or a fourth key; the trigger module is also used for controlling the mode selection module to operate when the second key is pressed for a long time to reach a set time threshold; the trigger module is also used for controlling the mode selection module to be closed when the second key is pressed for a short time.
By adopting the technical scheme, the mode selection module can be operated or closed through the second key, and when the working mode needs to be selected, the working mode can be selected by pressing the third key or the fourth key. The number of the operation modes may be two, or may be a plurality of operation modes including two or more. Taking two operation modes as an example, the two operation modes can be a peak hold mode and a trace back mode. In the tracing mode, when a user stops operating the digital display torque wrench and takes the digital display torque wrench off bolts, screws, nuts and other components to be screwed, the torque value displayed by the digital display module returns to zero. In the peak holding mode, when the user stops operating the digital display torque wrench and takes the digital display torque wrench off the bolt, the screw, the nut and other components to be screwed, the torque value displayed by the digital display module cannot return to zero and the torque value currently tested is displayed.
Further, the controller further comprises a locking module for locking the second key, the third key and the fourth key; the triggering module is also used for controlling the locking module to operate or close when the fifth key is pressed for a set time length.
Through adopting above-mentioned technical scheme, press the fifth button for a long time and can start the locking module to all lock second button, third button and fourth button, have and can avoid the operator to produce the effect of maloperation when using digital display torque wrench. And when the locking module needs to be closed, the fifth key is pressed for a set time length.
Another objective of the present invention is to provide an operating method of a digital display torque wrench based on the digital display torque wrench, which has the advantages of good compatibility of usage scenarios and high operation accuracy.
An operation method of a digital display torque wrench, the operation method based on the digital display torque wrench, comprises:
selecting a unit, namely pressing down the first key and then loosening the first key to start the digital display torque wrench; after the digital display torque wrench is started, the second key is pressed for a short time to switch the torque value unit displayed by the digital display module;
setting a target torsion value, and after the digital display torque wrench is started, pressing the third key to reduce the target torsion value or pressing the fourth key to increase the target torsion value;
selecting a mode, and pressing the second key for a long time after the digital display torque wrench is started; when the second key is pressed for a long time to reach a set time threshold, the second key is released to enter a set mode; pressing the third key or the fourth key to switch the working mode of the digital display torque wrench; after the working mode of the digital display torque wrench is set, the second key is pressed for a short time to leave the set mode;
the backlight setting is carried out, and after the digital display torque wrench is started, the fifth key is pressed for a short time to control the on-off of the backlight;
the keys are locked, and after the digital display torque wrench is started, the fifth key is pressed for a long time; when the fifth key is pressed for a long time to reach a set time length, the fifth key is released to control the locking module to operate; and after the fifth key is pressed for a set time length, the fifth key is released to control the locking module to be closed.
By adopting the technical scheme, the target torsion value can be conveniently set, an operator can set the unit, the working mode and the like displayed by the display module according to different use scenes, and the method has the effects of good compatibility of the use scenes and high operation accuracy.
In conclusion, the invention has the following beneficial effects:
1. through the arrangement of the main control board, the first indicator light and the plurality of second indicator lights, the effects of good use scene compatibility and high operation accuracy can be achieved;
2. through the arrangement of the buzzing module and the comparison module, the effect of reminding an operator to observe the indicating module can be achieved;
3. the unit selection module and the mode selection module are arranged, so that the effect of further improving the compatibility of the use scene can be achieved;
4. through the arrangement of the locking module and the fifth key, the effect of preventing misoperation of an operator can be achieved.
Drawings
Fig. 1 is a schematic view of an overall structure for embodying a digital display torque wrench in embodiment 1;
fig. 2 is a schematic diagram of a structure for embodying a main control board in embodiment 1;
fig. 3 is a schematic diagram of a structure for embodying a self-locking module in embodiment 1;
fig. 4 is a schematic diagram of a structure for embodying an indication module in embodiment 1;
FIG. 5 is a schematic diagram of embodiment 1 for showing a connection relationship between a digital display module and a controller;
fig. 6 is a schematic diagram for showing a connection relationship between the controller and the key module in embodiment 1.
In the figure: 1. a pulling part; 2. a grip; 21. a buzzer sounding part; 3. a connecting rod; 4. a torque sensor; 5. a digital display module; 51. an LCD liquid crystal screen; 52. a backlight; 6. a controller; 61. an analog-to-digital conversion module; 62. a power supply module; 63. a power input module; 64. a self-locking module; 65. a voltage stabilization module; 66. a backlight control module; 67. a buzzer module; 7. a key module; 71. a first key; 72. a second key; 73. a third key; 74. a fourth key; 75. a fifth key; 8. an indication module; 81. a first indicator light; 82. a second indicator light; 9. a comparison module; 91. a triggering module; 92. a unit selection module; 93. a mode selection module; 94. and locking the module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Example 1:
a digital torque wrench, referring to fig. 1, comprises a wrenching part 1, a handle 2 and a connecting rod 3, wherein the connecting rod 3 is connected between the wrenching part 1 and the handle 2. When the handle 2 is used, an operator can turn a bolt, a screw, a nut or other components by pulling the part 1 after holding the handle.
Referring to fig. 1 and 2, a torque sensor 4 is provided on the wrenching part 1, and the torque sensor 4 is used for detecting a torque value when an operator twists a component by a digital display torque wrench. The grip 2 is provided with a digital display module 5, a key module 7 and an indication module 8, the digital display module 5 is used for displaying the torque value detected by the torque sensor 4, the key module 7 is used for setting a target torque value, and the indication module 8 is used for sending out an alarm signal. The handle 2 is internally provided with a main control board which is connected with the torque sensor 4, the digital display module 5, the key module 7 and the indicating module 8 and used for controlling the operation of the digital display module 5 and the indicating module 8.
Referring to fig. 2, the main control board includes a controller 6, an analog-to-digital conversion module 61, a power supply module 62, and a power input module 63. The output end of the power supply module 62 is connected to the input end of the power input module 63, and the output end of the power input module 63 is connected to the input end of the controller 6, the input end of the analog-to-digital conversion module 61, and the input end of the indication module 8. The output end of the torque sensor 4 is connected with the input end of the analog-to-digital conversion module 61, the output end of the key module 7 and the output end of the indication module 8 are connected with the input end of the controller 6, and the input end of the digital display module 5 is connected with the output end of the controller 6.
Referring to fig. 2 and 3, the power input module 63 includes a self-locking module 64 and a voltage stabilizing module 65, and the key module 7 includes a first key 71. The self-locking module 64 includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a transistor Q1, a first diode D1, and a second diode D2. The output end of the power supply module 62 is connected to one end of the first button 71 and the input end of the voltage stabilizing module 65, and the output end of the voltage stabilizing module 65 is connected to the input end of the controller 6 and one end of the third resistor R3. The other end of the third resistor R3 is connected to the input terminal of the controller 6 and the collector of the transistor Q1, and the emitter of the transistor Q1 is grounded and connected to one end of the second resistor R2. The other end of the second resistor R2 is connected to the base of the transistor Q1 and one end of the first resistor R1, and the other end of the first resistor R1 is connected to the other end of the first button 71 and the anode of the first diode D1. The cathode of the first diode D1 is connected to one end of the fourth resistor R4, the enable terminal of the voltage regulator module 65, and the cathode of the second diode D2, the other end of the fourth resistor R4 is grounded, and the anode of the second diode D2 is connected to the output terminal of the controller 6. When the first button 71 is pressed, the power supply module 62 is connected to the enable terminal of the voltage regulation module 65, and the voltage regulation module 65 supplies power to the self-locking module 64 and the controller 6. Meanwhile, after detecting that the first button 71 is pressed, the controller 6 outputs a control signal to the enable terminal of the regulator module 65, so that the regulator module 65 can continue to operate even after the first button 71 is released.
Referring to fig. 1 and 4, the indication module 8 (see fig. 2) includes a first indicator 81 and a plurality of second indicator 82, in this embodiment, the first indicator 81 corresponds to the LED1, the second indicator 82 is provided with three LEDs and corresponds to the LEDs 2, 3 and 4, respectively, the second indicator 82 emits green light when turned on, and the first indicator 81 emits red light when turned on. When the torque value detected by the torque sensor 4 reaches 85% of the set target torque value, the controller 6 controls the first and second indicator lights 82 to be turned on, i.e., the LED4 is turned on. When the torque value detected by the torque sensor 4 reaches 90% of the set target torque value, the controller 6 controls the second indicator lamp 82 to be turned on, i.e., the LED3 is turned on, and at this time, the LED4 is also turned on. When the torque value detected by the torque sensor 4 reaches 95% of the set target torque value, the controller 6 controls the third second indicator light 82 to be turned on, i.e., the LED2 is turned on, and at this time, both the LED3 and the LED4 are turned on. When the torque value detected by the torque sensor 4 reaches 100% of the set target torque value, the controller 6 controls the first indicator lamp 81 to be turned on, that is, the LED1 to be turned on, and at this time, the LED2, the LED3, and the LED4 are all turned on.
Referring to fig. 2 and 5, the digital display module 5 includes an LCD liquid crystal screen 51 and a backlight 52, and the main control board further includes a backlight control module 66 for turning on the backlight 52. The backlight control module 66 is connected with the power input module 63, the digital display module 5 and the controller 6, and the controller 6 is used for controlling the operation or the closing of the backlight control module 66.
Referring to fig. 2 and 6, the main control board further includes a buzzer module 67, and the buzzer module 67 is connected to the controller 6 and the power input module 63. When the first second indicator light 82 (refer to fig. 1) is turned on, the controller 6 controls the buzzer module 67 to emit a sounding signal. The controller 6 comprises a comparison module 9, and when the first second indicator light 82 is lightened, the comparison module 9 controls the buzzer module 67 to send out a buzzing signal. When the torque value detected by the torque sensor 4 is larger and larger, the comparing module 9 controls the buzzer module 67 to increase the frequency of sounding signals correspondingly.
Referring to fig. 1 and 6, the controller 6 further includes a trigger module 91 and a unit selection module 92, and the unit selection module 92 is configured to change the unit of the torque value displayed by the digital display module 5. The key module 7 further includes a second key 72, a third key 73, a fourth key 74 and a fifth key 75, where the third key 73 is a lower key and the fourth key 74 is an upper key. When the second button 72 is pressed for a short time, the triggering module 91 controls the unit selecting module 92 to operate. When the fifth key 75 is pressed for a short time, the transmitter module controls the backlight control module 66 (refer to fig. 2) to operate or shut down.
Referring to fig. 1 and 6, the controller 6 further includes a mode selection module 93, when the mode selection module 93 operates and presses the third key 73 or the fourth key 74, the mode selection module 93 changes an operation mode of the digital display torque wrench and the LCD 51 displays corresponding operation mode information. When the second button 72 is pressed for a long time longer than 2 seconds, the triggering module 91 controls the mode selecting module 93 to operate. When the second button 72 is pressed for a short time (i.e., less than 2 seconds), the triggering module 91 controls the mode selecting module 93 to turn off. In the embodiment, the working mode is divided into a peak holding mode and a trace-back mode, and in the trace-back mode, when a user stops operating the digital display torque wrench and takes the digital display torque wrench off a bolt, a screw, a nut and other components to be screwed, a torque value displayed by the display module returns to zero; in the peak hold mode, when the user stops operating the digital display torque wrench and removes the digital display torque wrench from the bolt, screw, nut and other components to be screwed, the torque value displayed by the display module does not return to zero and displays the torque value currently tested.
Referring to fig. 1 and 6, the controller 6 further includes a locking module 94, and the locking module 94 is used for locking the second button 72, the third button 73 and the fourth button 74. When the fifth key 75 is pressed for 3 seconds, the triggering module 91 controls the locking module 94 to operate; when the fifth key 75 is pressed for another 3 seconds, the triggering module 91 controls the locking module 94 to close.
The working principle is as follows:
when the user turns the bolt, screw, nut or other components through the digital display torque wrench, the controller 6 controls the first and second indicator lights 82 to be turned on, i.e., the LED4 to be turned on, when the torque value detected by the torque sensor 4 reaches 85% of the set target torque value. When the torque value detected by the torque sensor 4 reaches 90% of the set target torque value, the controller 6 controls the second indicator lamp 82 to be turned on, i.e., the LED3 is turned on, and at this time, the LED4 is also turned on. When the torque value detected by the torque sensor 4 reaches 95% of the set target torque value, the controller 6 controls the third second indicator light 82 to be turned on, i.e., the LED2 is turned on, and at this time, both the LED3 and the LED4 are turned on. When the torque value detected by the torque sensor 4 reaches 100% of the set target torque value, the controller 6 controls the first indicator lamp 81 to be turned on, that is, the LED1 to be turned on, and at this time, the LED2, the LED3, and the LED4 are all turned on.
In the tracing mode, when a user stops operating the digital display torque wrench and takes the digital display torque wrench off a bolt, a screw, a nut or other components to be screwed, the torque value displayed by the display module returns to zero.
In the peak holding mode, when the user stops operating the digital display torque wrench and removes the digital display torque wrench from the bolt, screw, nut or other component to be screwed, the torque value displayed by the display module does not return to zero and displays the currently tested torque value.
When the user presses the fifth button 75 for 3 seconds to activate the locking module 94, the second button 72, the third button 73, and the fourth button 74 are locked. When the user presses the fifth button 75 for 3 seconds, the triggering module 91 controls the locking module 94 to close, and at this time, the second button 72, the third button 73, and the fourth button 74 are all unlocked.
Example 2:
an operation method of a digital display torque wrench based on the digital display torque wrench of embodiment 1 is provided, referring to fig. 1 and 2, and includes:
unit selection, wherein a user presses the first key 71 and then loosens the first key, so that the digital display torque wrench is started; when the torque wrench is started, the user can switch the torque value units displayed by the digital display module 5 by pressing the second button 72 for a short time, wherein the torque value units in this embodiment include n.m (newton. meter), in.lb (inch. pound), ft.lb (foot. pound), and kgf.m (kilogram. meter);
setting a target torque value, and when the torque wrench is started, the user presses the third button 73 to decrease the target torque value, or the user presses the fourth button 74 to increase the target torque value;
mode selection, after the digital display torque wrench is started, the user presses the second key 72 for a long time; when the second key 72 is pressed for 2 seconds, the second key 72 is released, and then the setting mode is entered; the user can switch the working mode of the digital display torque wrench by pressing the third key 73 or the fourth key 74; after the working mode of the digital display torque wrench is set by a user, the user can leave the set mode by pressing the second key 72 for a short time; in the present embodiment, the operating mode is divided into a peak holding mode and a trace back mode, and in the trace back mode, when the user stops operating the digital display torque wrench and takes it off the bolt, screw, nut and other components to be screwed, the torque value displayed by the digital display module 5 returns to zero; in the peak value holding mode, when a user stops operating the digital display torque wrench and takes the digital display torque wrench off bolts, screws, nuts and other components to be screwed, the torque value displayed by the digital display module 5 cannot return to zero and displays the torque value tested currently;
backlight setting, after the digital display torque wrench is started, a user presses the fifth key 75 for a short time to control the on and off of the backlight 52 (refer to fig. 5), and the on and off of the backlight 52 can be operated circularly;
when the digital display torque wrench is started, the user presses the fifth button 75 for a long time; when the user presses the fifth button 75 for 3 seconds, the locking module 94 (see fig. 6) can be operated by releasing the fifth button 75; after the user presses the fifth key 75 for 3 seconds, the locking module 94 is controlled to close by releasing the fifth key 75.
Claims (4)
1. The utility model provides a digital display torque wrench, includes pulls portion (1), handle (2) and connects connecting rod (3) between pulling portion (1) and handle (2), its characterized in that still includes:
a torque sensor (4) which is carried on the pulling part (1) and is used for detecting an operation torsion value;
the digital display module (5) is arranged on the handle (2) and is used for displaying the torque value detected by the torque sensor (4);
the main control board is loaded in the handle (2), connected with the torque sensor (4) and the digital display module (5) and used for controlling the digital display module (5) to operate;
the key module (7) is arranged on the grip (2), connected with the main control board and used for setting a target torsion value; and the number of the first and second groups,
the indicating module (8) is arranged on the handle (2), connected with the main control board and used for sending an indicating signal;
wherein the indicating module (8) comprises a first indicating lamp (81) and a plurality of second indicating lamps (82); the main control board is used for controlling the second indicator lamps (82) to light up sequentially according to the increase of the torque value detected by the torque sensor (4) before the torque value detected by the torque sensor (4) reaches the set target torque value; the main control board is also used for controlling the first indicator lamp (81) to light up when the torque value detected by the torque sensor (4) reaches a set target torque value;
the main control board comprises a controller (6), an analog-to-digital conversion module (61), a power supply module (62) and a power supply input module (63); the power supply module (62) is connected with the power input module (63), and the power input module (63) is connected with the controller (6), the analog-to-digital conversion module (61) and the indication module (8); the moment sensor (4) is connected with an analog-digital conversion module (61), and the analog-digital conversion module (61), the key module (7), the indication module (8) and the digital display module (5) are connected with the controller (6);
the main control board also comprises a buzzer module (67) connected with the controller (6) and the power input module (63); the controller (6) comprises a comparison module (9); the comparison module (9) is used for controlling the buzzing module (67) to send out a buzzing signal when the first second indicator lamp (82) is turned on; the comparison module (9) is also used for controlling the buzzing module (67) to correspondingly accelerate the frequency of the buzzing signal when the torque value detected by the torque sensor (4) is increased;
the power supply input module (63) comprises a self-locking module (64) and a voltage stabilizing module (65), and the key module (7) comprises a first key (71), a second key (72), a third key (73), a fourth key (74) and a fifth key (75);
the power supply module (62) is connected with one end of the first key (71) and the voltage stabilizing module (65), and the self-locking module (64) is connected with the other end of the first key (71), the voltage stabilizing module (65) and the controller (6); when the first key (71) is pressed, the voltage stabilizing module (65) supplies power to the self-locking module (64) and the controller (6); the controller (6) is used for controlling the voltage stabilizing module (65) to continue to operate after the first key (71) is released;
the controller (6) further comprises a trigger module (91) and a unit selection module (92) for changing the unit of the torque force value displayed by the digital display module (5); the third key (73) is a lower key, and the fourth key (74) is an upper key; the trigger module (91) is used for controlling the unit selection module (92) to operate when the second key (72) is pressed for a short time;
the controller (6) further comprises a locking module (94) for locking the second key (72), the third key (73) and the fourth key (74); the trigger module (91) is also used for controlling the locking module (94) to operate or close when the fifth key (75) is pressed for a set time length.
2. The digital display torque wrench of claim 1, wherein: the digital display module (5) comprises an LCD (liquid crystal display) screen (51) and a backlight lamp (52), and the main control panel further comprises a backlight control module (66) for turning on the backlight lamp (52); the backlight control module (66) is connected with the power input module (63), the digital display module (5) and the controller (6), and the trigger module (91) is used for responding to the short-press operation of the fifth key (75) to control the operation or the closing of the backlight control module (66).
3. The digital display torque wrench of claim 2, wherein: the controller (6) further comprises a mode selection module (93), and the mode selection module (93) is used for changing the working mode of the digital display torque wrench and controlling the digital display module (5) to display corresponding working mode information when the mode selection module (93) operates and presses a third key (73) or a fourth key (74); the trigger module (91) is also used for controlling the mode selection module (93) to operate when the second key (72) is pressed for a long time to reach a set time threshold; the trigger module (91) is also used for controlling the mode selection module (93) to be closed when the second key (72) is pressed for a short time.
4. A method of operating a digital torque wrench, the method of operating being based on the digital torque wrench of claim 3, comprising:
unit selection, namely pressing down the first key (71) and then loosening the first key to start the digital display torque wrench; after the digital display torque wrench is started, the second key (72) is pressed for a short time to switch the torque value unit displayed by the digital display module (5);
setting a target torque value, and after the digital display torque wrench is started, pressing the third button (73) to reduce the target torque value or pressing the fourth button (74) to increase the target torque value;
selecting a mode, and pressing the second key (72) for a long time after the digital display torque wrench is started; when the second key (72) is pressed for a long time to reach a set time threshold value, the second key (72) is released to enter a set mode; then pressing the third key (73) or the fourth key (74) to switch the working mode of the digital display torque wrench; after the working mode of the digital display torque wrench is set, the second key (72) is pressed for a short time to leave the set mode;
the backlight setting is carried out, after the digital display torque wrench is started, the fifth key (75) is pressed for a short time to control the on-off of the backlight lamp (52);
the key is locked, and after the digital display torque wrench is started, the fifth key (75) is pressed for a long time; when the fifth key (75) is pressed for a long time to reach a set time length, the fifth key (75) is released to control the locking module (94) to operate; and after the fifth key (75) is pressed for a set time, the fifth key (75) is released to control the locking module (94) to close.
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| CN201810893408.4A CN109015506B (en) | 2018-08-07 | 2018-08-07 | Digital display torque wrench and operation method thereof |
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| CN201810893408.4A CN109015506B (en) | 2018-08-07 | 2018-08-07 | Digital display torque wrench and operation method thereof |
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| CN109015506B true CN109015506B (en) | 2020-10-23 |
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| CN2510241Y (en) * | 2001-11-29 | 2002-09-11 | 国营东方仪器厂 | Digital-display torque wrench |
| US6766700B2 (en) * | 2002-08-28 | 2004-07-27 | Chih-Ching Hsien | Wrench having torque indicator |
| CN1640625A (en) * | 2004-01-16 | 2005-07-20 | 金统立工业股份有限公司 | Torque wrench capable of counting and displaying |
| CN101564835A (en) * | 2008-04-22 | 2009-10-28 | 谢智庆 | Sensing structure for torque wrench |
| CN204686728U (en) * | 2015-06-03 | 2015-10-07 | 常州市宏纳工具有限公司 | Novel digital display torque spanner |
| CN206216566U (en) * | 2016-11-25 | 2017-06-06 | 威海市威力高档工具有限公司 | A kind of Digital Electronic Torque Wrench with WiFi function |
| CN207171897U (en) * | 2017-09-18 | 2018-04-03 | 新疆维吾尔自治区送变电工程公司 | A kind of anti-torque-indicating wrench of falling of novel high-altitude operation |
| CN108181038A (en) * | 2017-12-12 | 2018-06-19 | 威海北洋电气集团股份有限公司 | Torque-indicating wrench and its torque measuring method |
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