CN114770415A - Display control method and system of tripping wrench and tripping wrench - Google Patents
Display control method and system of tripping wrench and tripping wrench Download PDFInfo
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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
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
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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
- B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
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Abstract
The invention provides a display control method and a display control system for a tripping wrench and the tripping wrench, wherein the display control method comprises the following steps: acquiring torque data and angle data according to a preset frequency to obtain a torque data sequence and an angle data sequence; obtaining a first torque peak value and a second torque peak value according to the torque data sequence and the angle data sequence; wherein the first torque peak value corresponds to a moment when a trip starts to occur, and the second torque peak value corresponds to a moment when a force application operation is stopped after the trip occurs; displaying the first torque peak value and the second torque peak value. The display control system is used for realizing the display control method. The invention is convenient for operators to quickly and accurately judge and stop the force application operation, thereby achieving the operation result which is closer to the preset torque value.
Description
Technical Field
The invention relates to the technical field of torque measurement, in particular to a display control method and a display control system for a tripping wrench and the tripping wrench.
Background
A trip wrench is a wrench in which a torque value can be preset. In the process that an operator uses the wrench to tighten the nut, when the torque value measured on the wrench reaches the preset torque value, the tripping mechanical mechanism on the wrench can perform a tripping action, and simultaneously, the tripping action is accompanied by a clicking sound generated by the collision of the metal mechanism so as to prompt the operator to finish the operation. The early trip wrenches are only of pure mechanical structures and do not display torque values of the wrenches, and the torque values of final tightening of nuts can be displayed by adding a maximum torque value display function to some of the later trip wrenches.
Due to the limitation of the mechanical structure of the trip wrench, when the nut is screwed down, the trip time of the trip mechanical structure is short, and when the trip action occurs, an operator needs to quickly judge and stop the force application operation. However, since this time is too short, the operator typically performs the energizing operation for a certain time after the occurrence of the trip, which results in a final torque value that is larger than the preset torque value, and the longer the tightening operation is after the occurrence of the trip, the larger the tightening result torque value is than the set value.
It is for the reasons described above that operators using trip wrenches are typically trained. However, even trained personnel operate according to their own experience in actual operation, and there is no criterion for judging the operation, so that the operator can continuously improve his own operation.
Disclosure of Invention
In view of the defects in the prior art, an object of the present invention is to provide a method and a system for controlling display of a trip wrench and a trip wrench.
According to a first aspect of the present invention, there is provided a display control method of a trip wrench, the method including:
acquiring torque data and angle data according to a preset frequency to obtain a torque data sequence and an angle data sequence;
obtaining a first torque peak value and a second torque peak value according to the torque data sequence and the angle data sequence; wherein the first torque peak corresponds to a time when a trip starts to occur, and the second torque peak corresponds to a time when a boost operation is stopped after the trip occurs;
displaying the first torque peak and the second torque peak.
Further, the obtaining of the torque data and the angle data according to the preset frequency to obtain a torque data sequence and an angle data sequence includes:
when the torque data is not less than the preset torque value, continuously reading and storing the torque data and the angle data according to the preset frequency, wherein the number of the read data is increased by one when one torque data and one angle data are stored;
and when the torque data is zero, stopping storing the torque data and the angle data to obtain a torque data sequence with the number of data N and an angle data sequence with the number of data N.
Further, the obtaining a first torque peak value and a second torque peak value according to the torque data sequence and the angle data sequence includes:
carrying out slope calculation processing on the angle data sequence to obtain an angle change rate data sequence;
searching for a maximum value of the angular change rate data in the sequence of the angular change rate data, wherein the position of the maximum value of the angular change rate in the sequence of the angular change rate data is recorded as N1;
searching a maximum value of the torque from the first torque data to the Nth 1 th torque data in the torque data sequence, namely a first torque peak value;
in the torque data sequence, a torque maximum value is searched from the Nth 1 torque data to the Nth torque data, namely, a second torque peak value.
Further, when the torque data is not less than the preset torque value, starting to continuously read and save the torque data and the angle data includes: the preset torque value is determined according to a target torque value.
Further, before starting to continuously read and save the torque data and the angle data when the torque data is not less than the preset torque value, the method comprises the following steps: and when the torque data is smaller than the preset torque value, continuing to read the torque.
Further, after the displaying the first torque peak and the second torque peak, comprising: clearing the torque data sequence, the angle data sequence and the angle change rate data sequence, and resetting the number of data to zero.
According to a second aspect of the present invention, there is provided a display control system for a trip wrench, the system comprising:
the data acquisition module is used for acquiring torque data and angle data according to preset frequency to obtain a torque data sequence and an angle data sequence;
the processing module is used for obtaining a first torque peak value and a second torque peak value according to the torque data sequence and the angle data sequence; wherein the first torque peak value corresponds to a moment when a trip starts to occur, and the second torque peak value corresponds to a moment when a force application operation is stopped after the trip occurs;
a display module for displaying the first torque peak value and the second torque peak value.
Further, the data acquisition module comprises a torque measurement unit and an angle measurement unit, the torque measurement unit is used for measuring torque data on the wrench, and the angle measurement unit is used for measuring angle data of wrench pipe wall rotation;
the processing module comprises a data reading unit and a counting unit, wherein the data reading unit is used for continuously reading and saving the torque data and the angle data when the torque data is not less than a preset torque value, and stopping saving the torque data and the angle data when the torque data is 0;
the counting unit is used for calculating the number of the stored torque data and angle data, wherein the number of the data is increased by one when one torque data and one angle data are stored.
Further, the processing module further comprises a calculating unit, and the calculating unit is used for performing slope calculation processing on the angle data sequence to form an angle change rate data sequence; searching a maximum value of the angle change rate data in the angle change rate data sequence, wherein the position of the maximum value of the angle change rate data in the angle change rate data sequence is recorded as N1; in the torque data sequence, searching the maximum value of the torque data from the first data to the Nth 1 data to obtain a first torque peak value; in the torque data sequence, the maximum value of the torque data is searched from the Nth 1 th data to the last data, and a second torque peak value is obtained.
According to a third aspect of the present invention, there is provided a trip wrench comprising a display control system of the trip wrench described above.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the first torque peak value corresponding to the moment when the trip starts to occur and the second torque peak value corresponding to the moment when the boosting operation is stopped after the trip occurs are displayed, so that the operation can be continuously improved by referring to an operator, the operator can conveniently and accurately judge and stop the boosting operation, and the operation result which is closer to the preset torque value is achieved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic flow chart illustrating a display control method of a trip wrench according to an embodiment of the present invention;
FIG. 2 illustrates relative positions of the wrench head and the slide block when the wrench is not torqued according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating the relative position of the wrench head and the slide after the trip has occurred and the movement of the wrench head and the slide has been maximized, in accordance with an embodiment of the present invention;
FIG. 4 is a graph corresponding to torque curves and angle curves for an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a display control system of a trip wrench according to an embodiment of the present invention.
In the figure: 1 is a wrench head, 2 is a pipe wall, and 3 is a sliding block.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any manner. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the concept of the invention. All falling within the scope of the invention. In the description of the embodiments of the present invention, it should be noted that the terms "first", "second", and the like in the description and the claims of the present invention and the drawings described above are used for distinguishing similar objects and not necessarily for describing a particular order or sequence. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein.
Referring to fig. 1, a display control method for a trip wrench according to an embodiment of the present invention includes:
and S1, acquiring the torque data and the angle data according to the preset frequency to obtain a torque data sequence and an angle data sequence.
In some specific embodiments, obtaining the torque data sequence and the angle data sequence according to a preset frequency includes:
and when the torque data is smaller than the preset torque value, continuing to read the torque. When the torque data is not less than the preset torque value, continuously reading and storing the torque data and the angle data according to the preset frequency, wherein the torque data and the angle data are simultaneously obtained and are in one-to-one correspondence, and the number of the read data is increased by one when one torque data and one angle data are stored;
and when the torque data is zero, stopping storing the torque data and the angle data to obtain a torque data sequence with the data number of N and an angle data sequence with the data number of N.
The preset torque value represents the starting value of starting to record the torque value and the angle value, and the torque values after the preset torque value can effectively reflect the curve change of the torque. In some embodiments, when the torque data is not less than the preset torque value, the continuously reading and saving the torque data and the angle data is started, including: the preset torque value is determined according to the target torque value. According to the nuts with different sizes, the target torque value which a user wants to reach is different when the wrench is used. The preset torque value may be set to 10% of the target torque value.
And S2, obtaining a first torque peak value and a second torque peak value according to the torque data sequence and the angle data sequence.
Referring to fig. 2 and 3, the jump wrench comprises a wrench head 1, a pipe wall 2 and a slide 3, fig. 2 shows the relative positions of the wrench head 1 and the slide 3 when the wrench is not torqued, fig. 3 shows the relative positions after the jump action has occurred and the movement of the wrench head 1 and the slide 3 has reached a maximum; wherein the first torque peak value corresponds to the moment when the trip starts to occur, and the second torque peak value corresponds to the moment when the force application operation is stopped after the trip occurs.
In some embodiments, obtaining the first torque peak value and the second torque peak value according to the torque data sequence and the angle data sequence includes:
carrying out slope calculation processing on the angle data sequence to obtain an angle change rate data sequence;
searching the maximum value of the angle change rate data in the angle change rate data sequence, and recording the position of the maximum value of the angle change rate in the angle change rate data sequence as N1;
searching a maximum value of the torque from the first torque data to the Nth 1 th torque data in the torque data sequence, namely a first torque peak value;
in the torque data sequence, the torque maximum value is searched from the Nth 1 th torque data to the Nth torque data, and the torque maximum value is the second torque peak value.
It will be appreciated that if the first torque peak and the second torque peak are the same value at one point, the two peak points coincide, i.e. the two torque peaks for this operation are the same.
Specifically, a threshold torque value T0, i.e., a preset torque value, is preset, the frequency of reading the torque data is set to F, and the number Len of data to be read and stored is set to 0.
During the use process, the torque value of the torque module is continuously read, and the reading time interval is 1/F. When the torque value is less than the threshold torque value T0, the torque reading is continued. When the torque value is not less than the threshold torque value T0, the wrench is considered to start screwing, and at the moment, the torque value and the angle value are continuously read and stored, and when one torque value and one angle value are stored, the data number Len is added by 1.
In the process of saving the torque data and the angle data, when the torque value is 0, the wrench stops operating, and the torque data and the angle data are saved to obtain a torque data sequence with the number of data N and an angle data sequence with the number of data N.
The N stored torque data sets form a torque data sequence Tv [ i ] - (Tv 1, Tv2, Tv3, … Tvi }, i ═ 1,2,3 … N, where N ═ Len.
The stored N angle data constitute an angle data sequence Av [ i ] ═ { Av1, Av2, Av3, … Avi }, i ═ 1,2,3 … N, where N ═ Len.
The saved torque data sequence and angle data sequence are then processed, and referring to fig. 4, the process of processing the data is as follows: the angle data series Av [ i ] is subjected to slope processing to form an angle change rate data series Adt [ i ] {0, Adt1, Adt2, Adt3, … Adti }, i ═ 1,2,3 … N, where N is Len, and an angle change rate curve is obtained.
In the data sequence Adt [ i ], a maximum value Adtmax is found from 1 to Len, and the position of the value in the data sequence Adt [ i ] is marked as N1; the torque data sequence forms a torque curve, in the torque data sequence Tv [ i ], T1 is the N1 th torque data, and the maximum value is the first torque peak value from the 1 st data to the N1 th data; in the torque data series Tv [ i ], the maximum value is found from the Nth 1 th data to the Len th data, namely the second torque peak value.
The critical point before the tripping action of the tripping wrench begins to occur, i.e. before the tripping action occurs, is the time when the relative movement of the wrench head 1 and the slide block 3 is about to occur but not to occur. By analyzing the actual torque variation of the tripping wrench, the torque reaches a maximum value at the critical point of the tripping action, and then decreases with the relative movement of the wrench head 1 and the slide 3, which is the first torque peak. With the relative movement of the wrench head and the sliding block, namely, after the tripping action occurs, the wrench head 1 rotates relative to the wrench pipe wall 2. If the force application operation is stopped immediately, the torque value is reduced to zero, and the general operation cannot be stopped in such a short time, so that the wrench head 1 continues to rotate relative to the wrench pipe wall 2, and after one end of the wrench head 1 close to the sliding block 3 is contacted with the wrench pipe wall 2, the torque of the wrench is increased. This causes the torque to decrease and then begin to increase until the actual operation stops, at which point the torque decreases, again creating a peak in torque, the second torque peak. When the operation torque force stops, the wrench head 1 and the sliding block 3 return to the initial positions again.
According to the characteristics of the trip wrench, the torque value of the trip structure during action is continuously collected at multiple points to form a data curve, two torque peak values are searched from the curve and displayed and processed after curve data are processed, reference can be provided for operators, operation can be continuously improved, and therefore the operation result which is closer to the preset torque value is achieved.
And S3, displaying the first torque peak value and the second torque peak value.
In some embodiments, after displaying the first torque peak and the second torque peak, the method further comprises: and clearing the torque data sequence, the angle data sequence and the angle change rate data sequence, and resetting the number of the data to zero so as to facilitate the next operation.
According to the display control method of the tripping wrench in the embodiment of the invention, the first torque peak value corresponding to the moment when tripping starts to occur and the second torque peak value corresponding to the moment when the force application operation is stopped after tripping occurs are displayed, so that an operator can conveniently and accurately judge and stop the force application operation, and the operation result which is closer to the preset torque value is achieved.
An embodiment of the present invention further provides a display control system of a tripping wrench, and referring to fig. 5, the system includes:
the data acquisition module is used for acquiring torque data and angle data according to preset frequency to obtain a torque data sequence and an angle data sequence; the processing module is used for obtaining a first torque peak value and a second torque peak value according to the torque data sequence and the angle data sequence; wherein the first torque peak value corresponds to the moment when the trip starts to occur, and the second torque peak value corresponds to the moment when the force application operation is stopped after the trip occurs; and the display module is used for displaying the first torque peak value and the second torque peak value.
In some embodiments, the data acquisition module includes a torque measurement unit for measuring torque data on the wrench and an angle measurement unit for measuring angle data of the wrench tube wall rotation.
In some specific embodiments, the processing module comprises a data reading unit and a counting unit, wherein the data reading unit is used for starting to continuously read and store the torque data and the angle data when the torque data is not less than a preset torque value, and stopping storing the torque data and the angle data when the torque data is 0 value; the counting unit is used for calculating the number of the stored torque data and angle data, wherein the number of the data is increased by one when one torque data and one angle data are stored.
In some specific embodiments, the processing module further includes a calculation unit for calculating and processing the first torque peak value and the second torque peak value. Specifically, the computing unit is configured to perform slope calculation processing on the angle data sequence to form an angle change rate data sequence; searching the maximum value of the angle change rate data in the angle change rate data sequence, and recording the position of the maximum value of the angle change rate data in the angle change rate data sequence as N1; in the torque data sequence, searching the maximum value of the torque data from the first data to the Nth 1 data to obtain a first torque peak value; in the torque data sequence, the torque data maximum is searched from the Nth data 1 to the last data, and a second torque peak value is obtained. The processing module can be a main CPU, and the functions of reading data, counting and calculating are completed through the main CPU. The function of the display module can be realized by adopting a display screen arranged on the wrench.
Before the wrench is used, a threshold torque value T0, i.e., a preset torque value, is preset. The processing module, such as the main CPU, is set to read the frequency of the torque module as F, that is, the data sampling frequency of the torque module is F, and the measurement frequency of the angle module is also set as F. The number Len of data read by the processing module, such as the main CPU, is set to 0.
During the use process, the processing module continuously reads the torque value of the torque module, and the reading time interval is 1/F. When the torque value is less than the threshold torque value T0, the torque reading is continued. When the torque value is not less than the threshold torque value T0, the wrench is considered to start to perform the tightening operation, at this time, the processing module starts to continuously read and store the torque value and the angle value, and the number Len of the read data is added with 1 every time one torque value and one angle value are stored.
In the process of saving the torque data and the angle data, when the processing module detects that the torque value is 0, the wrench stops operating, and the processing module stops saving the torque data and the angle data.
The first torque peak value and the second torque peak value are calculated and processed in the same way as the method embodiment, and then the 1 st torque peak value and the 2 nd torque peak value are displayed on the display module.
The processing module resets the initial value of the data to prepare for the next operation as the main CPU, and comprises the steps of clearing the torque data sequence Tv [ i ], the angle data sequence Av [ i ] and the angle change rate data sequence Adt [ i ] according to the data number Len, and then setting the data number Len to 0. The processing module, such as the main CPU, then re-determines the process in which the wrench is beginning to perform a tightening operation.
It should be noted that the system and method embodiments in the system embodiment are based on the same inventive concept, and details are referred to the method embodiment and are not described herein again. Because the display control method of the trip wrench in the above embodiment has the above technical effects, the display control system of the trip wrench in this embodiment should also have the same technical effects, which is not described herein again.
The embodiment of the invention also provides a tripping wrench, which comprises the display control system of the tripping wrench in the embodiment. Because the display control system of the trip wrench in the above embodiment has the above technical effects, the trip wrench in this embodiment should also have the same technical effects, and will not be described herein again.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The above-described preferred features may be used in any combination without conflict with each other.
Claims (10)
1. A display control method of a tripping wrench is characterized by comprising the following steps:
acquiring torque data and angle data according to a preset frequency to obtain a torque data sequence and an angle data sequence;
obtaining a first torque peak value and a second torque peak value according to the torque data sequence and the angle data sequence; wherein the first torque peak value corresponds to a moment when a trip starts to occur, and the second torque peak value corresponds to a moment when a force application operation is stopped after the trip occurs;
displaying the first torque peak value and the second torque peak value.
2. The display control method of a trip wrench according to claim 1, wherein the obtaining torque data and angle data according to a preset frequency to obtain a torque data sequence and an angle data sequence comprises:
when the torque data is not less than the preset torque value, continuously reading and storing the torque data and the angle data according to the preset frequency, wherein the number of the read data is increased by one when one torque data and one angle data are stored;
and when the torque data is zero, stopping storing the torque data and the angle data to obtain a torque data sequence with the number of data N and an angle data sequence with the number of data N.
3. The method of claim 2, wherein the obtaining a first torque peak and a second torque peak according to the torque data sequence and the angle data sequence comprises:
performing slope calculation processing on the angle data sequence to obtain an angle change rate data sequence;
searching for an angular change rate data maximum value in the angular change rate data sequence, wherein the position of the angular change rate maximum value in the angular change rate data sequence is recorded as N1;
searching a maximum value of the torque from the first torque data to the Nth 1 th torque data in the torque data sequence, namely a first torque peak value;
in the torque data sequence, a torque maximum value is searched from the Nth 1 torque data to the Nth torque data, namely, a second torque peak value.
4. The display control method of the trip wrench according to claim 2, wherein the continuously reading and saving the torque data and the angle data when the torque data is not less than the preset torque value comprises: the preset torque value is determined according to a target torque value.
5. The display control method of the trip wrench according to claim 2, wherein before starting to continuously read and save the torque data and the angle data when the torque data is not less than the preset torque value, the method comprises: and when the torque data is smaller than the preset torque value, continuing to read the torque.
6. The method of claim 3, wherein after the displaying the first torque peak and the second torque peak, comprising: clearing the torque data sequence, the angle data sequence and the angle change rate data sequence, and resetting the number of data to zero.
7. A display control system for a trip wrench, comprising:
the data acquisition module is used for acquiring torque data and angle data according to preset frequency to obtain a torque data sequence and an angle data sequence;
the processing module is used for obtaining a first torque peak value and a second torque peak value according to the torque data sequence and the angle data sequence; wherein the first torque peak value corresponds to a moment when a trip starts to occur, and the second torque peak value corresponds to a moment when a force application operation is stopped after the trip occurs;
and the display module is used for displaying the first torque peak value and the second torque peak value.
8. The display control system of the trip wrench of claim 7, wherein the data acquisition module comprises a torque measurement unit and an angle measurement unit, the torque measurement unit is used for measuring torque data on the wrench, and the angle measurement unit is used for measuring angle data of the wrench pipe wall rotation;
the processing module comprises a data reading unit and a counting unit, wherein the data reading unit is used for starting to continuously read and store torque data and angle data when the torque data is not less than a preset torque value, and stopping storing the torque data and the angle data when the torque data is 0 value;
the counting unit is used for calculating the number of the stored torque data and angle data, wherein the number of the data is increased by one when one torque data and one angle data are stored.
9. The display control system of a trip wrench according to claim 8, wherein the processing module further comprises a computing unit for performing a slope calculation process on the angle data sequence to form an angle change rate data sequence; searching a maximum value of the angle change rate data in the angle change rate data sequence, wherein the position of the maximum value of the angle change rate data in the angle change rate data sequence is recorded as N1; in the torque data sequence, searching the maximum value of the torque data from the first data to the Nth 1 data to obtain a first torque peak value; in the torque data sequence, the maximum value of the torque data is searched from the Nth 1 th data to the last data, and a second torque peak value is obtained.
10. A trip wrench comprising a display control system of the trip wrench of any one of claims 7-9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI874212B (en) * | 2024-05-07 | 2025-02-21 | 王永吉 | Torque wrench capable of counting number of operations |
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| CN215789516U (en) * | 2021-09-18 | 2022-02-11 | 陕西诺恩斯智能工业设备有限公司 | Wireless Communication Electromechanical Torque Wrench |
| TW202208122A (en) * | 2020-08-19 | 2022-03-01 | 重威企業有限公司 | Torque wrench capable of avoiding over-tightening including a hollow tube body, a rod member, a head part, an abutting member, a tripping mechanism, an elastic element, an adjustment mechanism and an energy-absorbing member |
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| TW202208122A (en) * | 2020-08-19 | 2022-03-01 | 重威企業有限公司 | Torque wrench capable of avoiding over-tightening including a hollow tube body, a rod member, a head part, an abutting member, a tripping mechanism, an elastic element, an adjustment mechanism and an energy-absorbing member |
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| TWI874212B (en) * | 2024-05-07 | 2025-02-21 | 王永吉 | Torque wrench capable of counting number of operations |
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| CN114770415B (en) | 2023-12-08 |
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