CN114770415B - Display control method and system of trip wrench and trip wrench - Google Patents
Display control method and system of trip wrench and trip wrench Download PDFInfo
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- 238000005259 measurement Methods 0.000 claims description 9
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Classifications
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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 system of a jump-out wrench and the jump-out 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; according to the torque data sequence and the angle data sequence, a first torque peak value and a second torque peak value are obtained; wherein the first torque peak corresponds to a time when the trip starts to occur, and the second torque peak corresponds to a time when the energizing 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 judge and stop the boosting operation rapidly and accurately, thereby achieving the operation result which is more approximate to the preset torque value.
Description
Technical Field
The invention relates to the technical field of torsion measurement, in particular to a display control method and a display control system of a jump-out wrench and the jump-out wrench.
Background
The trip wrench is a wrench with a preset torque value. In the process of tightening the nut by using the wrench, when the torque value measured on the wrench reaches the preset torque value, the trip mechanical mechanism on the wrench can perform a trip action, and meanwhile, the trip mechanical mechanism is accompanied with a click sound generated by the collision of the metal mechanism so as to prompt the operation of the operator to end. The early jump spanner is only of a pure mechanical structure, the torque value of the spanner is not displayed, and the maximum torque value display function is added on some jump spanners later, so that the torque value of the final tightening of the nut can be displayed.
Because of 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 very short, and when the trip action occurs, an operator is required to rapidly judge and stop the stressing operation. However, because the time is too short, the operator can apply force to operate for a certain time after the tripping action occurs, so that the torque value of the final result is larger than the preset torque value, and the longer the time of the tightening operation after the tripping action occurs, the larger the torque value of the tightening result is than the set value.
For the reasons described above, operators using trip wrenches are typically trained. However, even the trained personnel, in actual operation, operate only according to their own experience, and none of the criteria for evaluating the operation is available, so that the operator continues to improve his own operation.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a display control method and a display control system for a jump wrench and the jump wrench.
According to a first aspect of the present invention, there is provided a display control method of a trip wrench, the method comprising:
acquiring torque data and angle data according to a preset frequency to obtain a torque data sequence and an angle data sequence;
according to the torque data sequence and the angle data sequence, a first torque peak value and a second torque peak value are obtained; wherein the first torque peak corresponds to a time when the trip starts to occur, and the second torque peak corresponds to a time when the energizing operation is stopped after the trip occurs;
displaying the first torque peak value and the second torque peak value.
Further, the obtaining 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 smaller than a preset torque value, starting to continuously read and store the torque data and the angle data according to a preset frequency, wherein the number of the data to be read 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, and obtaining a torque data sequence with the number of N and an angle data sequence with the number of 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:
slope processing is carried out on the angle data sequence to obtain an angle change rate data sequence;
searching an angle change rate data maximum value in the angle change rate data sequence, wherein the position of the angle change rate maximum value in the angle change rate data sequence is recorded as N1;
in the torque data sequence, searching a torque maximum value from the first torque data to the N1 torque data, namely a first torque peak value;
and searching a torque maximum value from the (N1) th torque data to the (N) th torque data in the torque data sequence, namely a second torque peak value.
Further, when the torque data is not smaller than the preset torque value, starting to continuously read and store the torque data and the angle data, including: and the preset torque value is determined according to the target torque value.
Further, before the continuous reading and storing of the torque data and the angle data are started when the torque data is not smaller than the preset torque value, the method comprises the steps of: and when the torque data is smaller than the preset torque value, continuing to read the torque.
Further, after said displaying said first torque peak and said second torque peak, comprising: and resetting 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 a 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 corresponds to a time when the trip starts to occur, and the second torque peak corresponds to a time when the energizing 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.
Further, the data acquisition module comprises a torque measurement unit and an angle measurement unit, wherein the torque measurement unit is used for measuring torque data on a wrench, and the angle measurement unit is used for measuring angle data of the rotation of the wrench pipe wall;
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 smaller 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 each time one torque data and angle data are stored, the number of the data is increased by one.
Further, the processing module further comprises a calculating unit, wherein the calculating unit is used for carrying out slope processing on the angle data sequence to form an angle change rate data sequence; searching an angle change rate data maximum value in the angle change rate data sequence, wherein the position of the angle change rate data maximum value in the angle change rate data sequence is recorded as N1; searching a torque data maximum value from the first data to the N1 data in the torque data sequence to obtain a first torque peak value; and searching a torque data maximum value from the N1 st data to the last data in the torque data sequence to obtain a second torque peak value.
According to a third aspect of the present invention, there is provided a trip wrench comprising the display control system of the trip wrench described above.
Compared with the prior art, the invention has at least one of the following beneficial effects:
according to the invention, the first torque peak value corresponding to the moment when the jump-out starts and the second torque peak value corresponding to the moment when the stress application operation is stopped after the jump-out starts are displayed, so that the reference can be given to operators, the operation is continuously improved, the operators can conveniently and rapidly judge and stop the stress application operation, and the operation result which is more close to the preset torque value is achieved.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a flow chart of a display control method of a trip wrench according to an embodiment of the present invention;
FIG. 2 shows the relative positions of the wrench head and the slider when the wrench is not torqued according to an embodiment of the present invention;
FIG. 3 is a diagram of the relative positions of the wrench and the slider after the trip action of the present invention has occurred and the movement of the wrench and the slider has reached a maximum;
FIG. 4 is a graph showing torque curve versus angle curve 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: the wrench is characterized in that 1 is a wrench head, 2 is a tube 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 assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention. In describing 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 in the above-described drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.
Referring to fig. 1, a display control method for a trip wrench according to an embodiment of the present invention includes:
s1, acquiring torque data and angle data according to a preset frequency to obtain a torque data sequence and an angle data sequence.
In some specific embodiments, the obtaining the torque data and the angle data according to the preset frequency to obtain the torque data sequence and the angle data sequence includes:
and when the torque data is smaller than the preset torque value, continuing to read the torque. When the torque data is not smaller than a preset torque value, starting to continuously read and store the torque data and the angle data according to a preset frequency, simultaneously acquiring and corresponding the torque data and the angle data one by one, and increasing the number of the read data by one when storing one torque data and one angle data;
and when the torque data is zero, stopping storing the torque data and the angle data, and obtaining a torque data sequence with the number of N and an angle data sequence with the number of N.
The preset torque value represents a starting value for starting to record the torque value and the angle value, and the torque value 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, starting to continuously read and save the torque data and the angle data, including: the preset torque value is determined according to the target torque value. According to nuts of different sizes, the target torque values which the user wants to reach are also different in the using process of the wrench. The preset torque value may be set to 10% of the target torque value.
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 trip wrench includes a wrench head 1, a tube wall 2 and a slider 3, fig. 2 shows the relative positions of the wrench head 1 and the slider 3 when the wrench is not torqued, and fig. 3 shows the relative positions after the trip action has occurred and the movement of the wrench head 1 and the slider 3 has reached a maximum; wherein the first torque peak corresponds to a timing at which the trip starts to occur, and the second torque peak corresponds to a timing at which the urging operation is stopped after the trip occurs.
In some embodiments, deriving the first torque peak and the second torque peak from the torque data sequence and the angle data sequence comprises:
slope processing is carried out on the angle data sequence, so that an angle change rate data sequence is obtained;
searching an angle change rate data maximum value in the angle change rate data sequence, and recording the position of the angle change rate maximum value in the angle change rate data sequence as N1;
in the torque data sequence, searching a torque maximum value from the first torque data to the N1 torque data, namely a first torque peak value;
and searching a torque maximum value from the (N1) th torque data to the (N) th torque data in the torque data sequence, namely a 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, then the two peak points coincide, i.e. the two torque peaks of the present operation are the same.
Specifically, a threshold torque value T0, that is, a preset torque value, is preset, the frequency of reading torque data is set to be F, and the number Len of stored data is read to=0.
In the using process, the torque value of the torque module is continuously read, and the reading time interval is 1/F. And when the torque value is smaller than the threshold torque value T0, continuing to read the torque. When the torque value is not smaller than the threshold torque value T0, the wrench is considered to start to carry out the tightening operation, at the moment, the torque value and the angle value are continuously read and stored, and the data number Len is increased by 1 every time the torque value and the angle value are stored.
In the process of storing the torque data and the angle data, when the torque value is 0, the spanner is stopped to operate at the moment, and the torque data and the angle data are stopped to be stored at the moment, so that a torque data sequence with the number of N and an angle data sequence with the number of N are obtained.
The N saved torque data constitute a torque data sequence Tv [ i ] = { Tv1, tv2, tv3, … Tv }, i=1, 2,3 … N, where n=len.
The saved N angle data constitute an angle data sequence Av [ i ] = { Av1, av2, av3, … Avi }, i=1, 2,3 … N, where n=len.
The stored torque data sequence and angle data sequence are then processed, and referring to fig. 4, the process of processing the data is: slope processing is performed on the angle data sequence Av [ i ] to form an angle change rate data sequence Adt [ i ] = {0, adt1, adt2, adt3, … add }, i=1, 2,3 … N, where n=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 maximum value Adtmax in the data sequence Adt [ i ] is recorded 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 found from the 1 st data to the N1 st data to be the first torque peak value; in the torque data sequence Tv [ i ], from the N1 st to the Len data, searching the maximum value to obtain a second torque peak value.
The start of the trip action of the trip wrench, i.e., the critical point before the trip action occurs, refers to the time when the relative movement of the wrench head 1 and the slider 3 will occur but not occur. By analyzing the actual torque variation value of the trip wrench, the torque value reaches a maximum value at the critical point where the trip action occurs, and then the torque value decreases as the wrench head 1 and the slider 3 relatively move, which is the first torque peak. The wrench 1 rotates relative to the wrench pipe wall 2 along with the relative movement of the wrench and the sliding block, namely after the trip action occurs. At this time, if the energizing operation is stopped immediately, the torque value is always reduced to zero, and since the normal operation is not stopped in such a short time, the wrench 1 is rotated with respect to the wrench pipe wall 2, and after the end of the wrench 1 near the slide 3 is brought into contact with the wrench pipe wall 2, the torque of the wrench is again increased. This results in a decrease in torque and an increase in torque until the actual operation is stopped, which again results in a torque peak, i.e. a second torque peak. When the operating torque force is stopped, the wrench 1 and the slider 3 are restored to the original positions.
According to the embodiment of the invention, according to the characteristics of the trip wrench, the torque value during the trip structure action is continuously collected at multiple points to form a data curve, after the curve data is processed, two torque peaks are searched from the curve and displayed, and the reference can be given to operators, so that the operation is continuously improved, and the operation result which is closer to the preset torque value is achieved.
S3, displaying a first torque peak value and a second torque peak value.
In some specific embodiments, after displaying the first torque peak and the second torque peak, comprising: and resetting the torque data sequence, the angle data sequence and the angle change rate data sequence to zero so as to facilitate the next operation.
According to the display control method for the trip wrench, disclosed by the embodiment of the invention, the first torque peak value corresponding to the moment when the trip starts and the second torque peak value corresponding to the moment when the stress application operation is stopped after the trip, so that an operator can conveniently and rapidly judge and stop the stress application operation, and an operation result which is closer to a preset torque value is achieved.
The embodiment of the invention also provides a display control system of the trip wrench, referring to fig. 5, the system comprises:
the data acquisition module is used for acquiring torque data and angle data according to a 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 corresponds to the moment when the trip starts to occur, and the second torque peak 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 includes a data reading unit and a counting unit, where the data reading unit is configured to start continuously reading and saving the torque data and the angle data when the torque data is not less than a preset torque value, and stop saving 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 each time one torque data and angle data are stored, the number of the data is increased by one.
In some specific embodiments, the processing module further includes a computing unit configured to perform a computing process to obtain a first torque peak value and a second torque peak value. Specifically, the computing unit is used for carrying out slope processing on the angle data sequence to form an angle change rate data sequence; searching an angle change rate data maximum value in the angle change rate data sequence, and marking the position of the angle change rate data maximum value in the angle change rate data sequence as N1; in the torque data sequence, searching a maximum value of torque data from the first data to the N1 data to obtain a first torque peak value; and searching a torque data maximum value from the N1 st data to the last data in the torque data sequence, and obtaining a second torque peak value. The processing module can be a main CPU, and the functions of reading data, counting and calculating processing 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, namely a preset torque value, is preset. The frequency of the processing module such as the main CPU for reading the torque module is set to be F, namely the data sampling frequency of the torque module is set to be F, and the measuring frequency of the angle module is also set to be F. The number of data numbers len=0 read by the processing module such as the main CPU is set.
In the using process, the processing module continuously reads the torque value of the torque module, and the reading time interval is 1/F. And when the torque value is smaller than the threshold torque value T0, continuing to read the torque. When the torque value is not smaller than the threshold torque value T0, the wrench is considered to start to carry out tightening operation, at the moment, 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 increased by 1 every time the torque value and the angle value are stored.
In the process of storing the torque data and the angle data, when the processing module detects that the torque value is 0, the spanner is stopped to operate at the moment, and the processing module stops storing the torque data and the angle data at the moment.
The method for calculating and processing the first torque peak value and the second torque peak value is the same as the method embodiment, and then the 1 st torque peak value and the 2 nd torque peak value are displayed in the display module.
The processing module, such as a main CPU, resets the initial value of the data to prepare for the next operation, including 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 by which the wrench begins the tightening operation.
It should be noted that, the system and method embodiments in the system embodiment are based on the same inventive concept, and the details refer to the method embodiment, which is not described herein. 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 the present embodiment should also have the same technical effects, and will not be described herein again.
The embodiment of the invention also provides a trip wrench which comprises the display control system of the trip 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 the embodiment should also have the same technical effects, and will not be described herein again.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention. The above-described preferred features may be used in any combination without collision.
Claims (10)
1. The display control method of the trip wrench is characterized by comprising the following steps of:
acquiring torque data and angle data according to a preset frequency to obtain a torque data sequence and an angle data sequence;
according to the torque data sequence and the angle data sequence, a first torque peak value and a second torque peak value are obtained; wherein the first torque peak corresponds to a time when the trip starts to occur, and the second torque peak corresponds to a time when the energizing operation is stopped after the trip occurs;
displaying the first torque peak value and the second torque peak value.
2. The method for controlling the display of the trip wrench according to claim 1, wherein the step of obtaining the torque data and the angle data according to the preset frequency to obtain the torque data sequence and the angle data sequence includes:
when the torque data is not smaller than a preset torque value, starting to continuously read and store the torque data and the angle data according to a preset frequency, wherein the number of the data to be read 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, and obtaining a torque data sequence with the number of N and an angle data sequence with the number of N.
3. The method for controlling the display of a trip wrench according to claim 2, wherein 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:
slope processing is carried out on the angle data sequence to obtain an angle change rate data sequence;
searching an angle change rate data maximum value in the angle change rate data sequence, wherein the position of the angle change rate maximum value in the angle change rate data sequence is recorded as N1;
in the torque data sequence, searching a torque maximum value from the first torque data to the N1 torque data, namely a first torque peak value;
and searching a torque maximum value from the (N1) th torque data to the (N) th torque data in the torque data sequence, namely a second torque peak value.
4. The display control method of a trip wrench according to claim 2, wherein when the torque data is not less than a preset torque value, starting continuous reading and saving of the torque data and the angle data includes: and the preset torque value is determined according to the target torque value.
5. The display control method of a trip wrench according to claim 2, comprising, before the continuously reading and saving the torque data and the angle data when the torque data is not less than a preset torque value, the steps of: and when the torque data is smaller than the preset torque value, continuing to read the torque.
6. The display control method of a jump wrench according to claim 3, comprising, after said displaying said first torque peak value and said second torque peak value: and resetting 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 a 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 corresponds to a time when the trip starts to occur, and the second torque peak corresponds to a time when the energizing 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 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;
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 smaller 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 each time one torque data and angle data are stored, the number of the data is increased by one.
9. The display control system of the trip wrench of claim 8, wherein the processing module further comprises a computing unit for performing slope processing on the angle data sequence to form an angle change rate data sequence; searching an angle change rate data maximum value in the angle change rate data sequence, wherein the position of the angle change rate data maximum value in the angle change rate data sequence is recorded as N1; searching a torque data maximum value from the first data to the N1 data in the torque data sequence to obtain a first torque peak value; and searching a torque data maximum value from the N1 st data to the last data in the torque data sequence to obtain a second torque peak value.
10. A trip wrench comprising a display control system of the trip wrench of any one of claims 7-9.
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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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE542516C2 (en) * | 2018-03-27 | 2020-06-02 | Atlas Copco Ind Technique Ab | Torque wrench evaluation system and method |
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| CN211728951U (en) * | 2019-12-27 | 2020-10-23 | 陕西东方航空仪表有限责任公司 | Digital display torque wrench with tightening force measurement function |
| 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 |
| 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 type electronic mechanical torque wrench |
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| CN114770415A (en) | 2022-07-22 |
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