Spanner device and control method for a spanner device

Abstract

The application discloses a wrench device and a control method of the wrench device, and the wrench device comprises at least two wrenches, each of which is provided with a control mechanism; a sliding assembly, all the wrenches are assembled on the sliding assembly and synchronously slide with the sliding assembly; and a connection mechanism, the control mechanisms of all the wrenches are communicatively connected through the connection mechanism, so that the control mechanism of one wrench can control all the wrenches when the connection mechanism is turned on. By adopting the scheme, the on-line control of two or more than two wrenches is realized, so that an operator can simultaneously control multiple wrenches at one time, the consistency of torque output of the multiple wrenches is ensured, and the wrenches can be driven to the next operation position by pushing the sliding assembly, so that the labor intensity of the operator is reduced, and thus the failure rate is reduced. In addition, the scheme also realizes the functions of automatic shutdown, automatic calculation, torque detection and display, automatic error reporting and the like, so that the wrench device is more intelligent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wrenches, in particular to a wrench device and a control method of the wrench device. BACKGROUND

[0002] There are two types of impact wrenches on the market: one is a straight torque wrench, which can easily install a torque sensor due to the reverse force arm to achieve accurate torque requirements, but the straight torque wrench is large in size and heavy in weight; the other is an impact wrench, which is small in size, light in weight and can provide a larger torque, and is widely used in the current market.

[0003] In a construction scene, the torque applied to the nut needs to be consistent for safety purposes, and the amount of work is large, resulting in high labor intensity, which is prone to cause work errors. For example, in the process of railway maintenance and repair, the disassembly and replacement of track fasteners require a large number of nut installation, disassembly, and replacement operations, and the torque applied to the nut needs to be consistent to ensure train safety.

[0004] Therefore, how to reduce labor intensity and more effectively ensure that the torque applied to the nut remains consistent is a technical problem that needs to be solved by those skilled in the art. SUMMARY

[0005] To solve the above technical problems, the present application provides a wrench device, which comprises:

[0006] at least two wrenches, each of which is provided with a control mechanism;

[0007] a sliding assembly, all of the wrenches are assembled on the sliding assembly and slide synchronously with the sliding assembly;

[0008] an online mechanism, the control mechanisms of all the wrenches are communicatively connected through the online mechanism, so that the control mechanism of one wrench can control all the wrenches when the online mechanism is turned on.

[0009] In an embodiment, each of the wrenches is provided with an input component for a user to input instructions; the control mechanism is communicatively connected with the input component, so that the control mechanism can control the wrench according to the instructions input by the user.

[0010] In an embodiment, each of the wrenches is provided with a motor, an output mechanism driven by the motor, and a collection mechanism for collecting current operation data of the motor in real time; the control mechanism is communicatively connected with the collection mechanism, so that the control mechanism can calculate the current output torque of the output mechanism and / or judge the current operation state of the motor and / or control the motor to start and stop according to the current operation data of the motor and / or the instructions input by the user.

[0011] In one embodiment, each wrench is provided with an impact block driven by the motor and used to impact the output mechanism; the collection mechanism includes a current sensor and a rotation speed sensor.

[0012] In one embodiment, each wrench is provided with a display; the control mechanism is in communication with the display, so that the control mechanism can control the display to turn on and off and / or control the display to display the current output torque of the output mechanism calculated and / or the current running information of the motor and / or the instruction input by the user and / or warning information according to the instruction input by the user.

[0013] In one embodiment, each wrench is provided with a torque detection mechanism for detecting the current output torque of the output mechanism; the control mechanism is in communication with the torque detection mechanism, so that the control mechanism can control the display to display the detected current output torque of the output mechanism.

[0014] In one embodiment, each wrench is provided with a lighting lamp; the control mechanism is in communication with the lighting lamp, so that the control mechanism can control the lighting lamp to turn on and off and / or control the lighting lamp to emit warning light according to the instruction input by the user.

[0015] In one embodiment, the control mechanism includes a power-off storage component for saving the current instruction input by the user when power is off.

[0016] In one embodiment, the control mechanism includes a counter for recording the number of times when the single running time of the motor reaches the preset time.

[0017] In one embodiment, the sliding assembly includes a sliding base, an elastic arm connected to the sliding base, and a connecting seat connected to the elastic arm; the wrench is mounted on the connecting seat, and the elastic arm can drive the connecting seat together with the wrench to move to a target position and remain at the target position by using its own elasticity.

[0018] In one embodiment, the wrench can be in the connecting seat including a fixed seat part fixed with the elastic arm and a sliding seat part capable of sliding along a direction perpendicular to the sliding direction of the sliding base; the wrench is connected to the sliding seat part, and the fixed seat part is provided with a scale for indicating the position of the sliding seat part and the sliding distance relative to the fixed seat part.

[0019] In one embodiment, the bottom of the sliding base is provided with a roller capable of adapting to a track, the part to be screwed is a part of the track, at least one wrench is located on one side of the track, and at least one wrench is located on the other side of the track.

[0020] In addition, the present application also provides a control method of the wrench device, the wrench device being any one of the wrench devices described above, the control method comprising: turning off the interconnection mechanism, each wrench being controlled by a respective control mechanism; or, turning on the interconnection mechanism, all the wrenches being controlled by the control mechanism of one wrench.

[0021] In an embodiment, the control method comprises: controlling the wrench according to a user input instruction, the user input instruction comprising: an instruction indicating forward rotation or reverse rotation of the motor of the wrench, an instruction indicating a speed gear of the motor of the wrench, and an instruction indicating starting of the motor of the wrench.

[0022] In an embodiment, the control method comprises: calculating a current output torque of the output mechanism of the wrench and / or judging a current running state of the motor and / or controlling starting and stopping of the motor according to the current running data of the motor collected and / or a user input instruction.

[0023] In an embodiment, the current running data of the motor collected comprises: current and speed;

[0024] The method of calculating the current output torque of the output mechanism of the wrench is: determining a starting time point of the impact block of the wrench impacting the output mechanism according to current variation; calculating the current output torque of the output mechanism once every predetermined time according to a preset formula from the starting time point until the control mechanism controls the motor to stop; the preset formula is: current output torque of the output mechanism = current motor speed × current impact duration × gear coefficient × constant × power voltage feedback coefficient; the gear coefficients corresponding to different speed gears are different.

[0025] In an embodiment, the method of controlling starting and stopping of the motor is: controlling the motor to start according to the instruction indicating the speed gear of the motor input by the user and / or the instruction indicating the speed gear of the motor; and controlling the motor to stop when the running duration of the motor reaches a preset duration.

[0026] In an embodiment, the control method comprises: controlling the display of the wrench to turn on and off according to a user input instruction, and / or controlling the display to display the current output torque of the output mechanism calculated, and / or controlling the display to display current running information of the motor, and / or controlling the display to display a user input instruction, and / or controlling the display to display warning information.

[0027] In one embodiment, the method of "controlling the display to display warning information" is as follows: when the running time of the motor is less than the preset time, control the display to display warning information.

[0028] In one embodiment, the current output torque of the output mechanism is detected, and the display is controlled to show the detected current output torque of the output mechanism.

[0029] In one embodiment, the control method includes: controlling the lighting to turn on and off according to user input instructions and / or controlling the lighting to emit warning light.

[0030] In one embodiment, the method of "controlling the lighting lamp to emit a warning light" is as follows: when the running time of the motor is less than the preset time, the lighting lamp is controlled to emit a warning light.

[0031] In one embodiment, the control method includes: recording the number of times the motor's single-run duration reaches the preset duration, and controlling the wrench's display to show the recorded number of times.

[0032] In one implementation, the control method includes: saving the currently input instructions when power is off until the user re-inputs the instructions.

[0033] The wrench device and its control method provided by this invention enable online control of two or more wrenches, allowing operators to control multiple wrenches simultaneously with a single operation. Furthermore, the wrench can be moved to the next working position by pushing the sliding component, eliminating the need for manual handling and thus reducing the operator's workload and error rate. Simultaneously, online control ensures consistency in torque output from multiple wrenches. Attached Figure Description

[0034] Figure 1 A schematic diagram of one embodiment of the wrench device provided by the present invention;

[0035] Figure 2 for Figure 1 Schematic diagram of the middle connector;

[0036] Figure 3 for Figure 1 A diagram of a center wrench;

[0037] Figure 4 for Figure 3 Cross-sectional view of the impact mechanism;

[0038] Figure 5 for Figure 3 Cross-sectional view of the vibration damping mechanism;

[0039] Figure 6 forFigure 5 Figure 2 is a sectional view of the first elastic damping member and the fixed portion connected thereto;

[0040] Figure 7 For Figure 3 Figure 4 is a sectional view of the first gripping member.

[0041] Legend of reference signs:

[0042] 01 track;

[0043] 100 wrench;

[0044] 10 impact mechanism, 101 motor, 102 speed reduction component, 103 drive shaft, 104 elastic component, 105 impact block, 105a first protrusion, 106 housing, 106a groove, 107 guide rail pair;

[0045] 20 output mechanism, 201 output shaft, 201a second protrusion;

[0046] 30 damping mechanism, 301 connecting member, 301a first connecting portion, 301b second connecting portion, 301c third connecting portion, 302 first elastic damping member, 303 fastener, 304 second elastic damping member.

[0047] 40 operating mechanism, 401 operating mechanism body, 401a first gripping member, 401b second gripping member, B anti-slip structure, 401c protective key, 401d starting key, 402 support, 402a carrier, 402b support shaft, 402c support arm;

[0048] 50 control mechanism;

[0049] 60 sliding assembly, 601 sliding table, 601a roller, 602 elastic arm, 603 connecting seat, 603a fixed seat portion, 603b positioning shaft, 603c sliding seat portion. DETAILED DESCRIPTION

[0050] In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions of the present application will be further described in detail below in combination with the drawings and specific embodiments. The radial direction described herein refers to the radial direction of the drive shaft 103, the axial direction refers to the axial direction of the drive shaft 103, and the circumferential direction refers to the circumferential direction of the drive shaft 103.

[0051] As Figure 1The wrench device has two wrenches 100 in this embodiment, and more wrenches can be provided in other embodiments. The wrench device also has a sliding assembly 60, and all the wrenches are assembled on the sliding assembly and slide synchronously with the sliding assembly. Each wrench is provided with a control mechanism 50. The wrench device also has a connection mechanism, and the control mechanisms of all the wrenches are communicatively connected through the connection mechanism. Specifically, the connection mechanism can be an electrical connection line plugged into the control mechanisms or a wireless transmission component assembled in the control mechanisms.

[0052] When the connection mechanism is turned on, the control mechanisms of all the wrenches can share data through the connection mechanism, so that the operator can control all the wrenches to work synchronously by operating one wrench, which can not only reduce the labor intensity of the operator but also ensure the consistency of the torque output of all the wrenches. Of course, the connection mechanism can also be disconnected, and after being disconnected, each wrench is controlled by the respective control mechanism and does not interfere with each other.

[0053] After the work at one position is completed, the sliding assembly can be pushed to the next working position, and all the wrenches reach the next working position together with the sliding assembly, which saves the manpower and further reduces the labor intensity of the operator, thereby reducing the failure rate.

[0054] For example, Figure 1 In this embodiment, the sliding assembly 60 includes a sliding table 601, an elastic arm 602 connected to the sliding table 601, a connecting seat 603 connected to the elastic arm 602, and the wrench 100 connected to the connecting seat 603. The bottom of the sliding table 601 is provided with a roller 601a. The elastic arm 602 can swing forward, backward, leftward, rightward, upward, and downward by means of its elastic deformation, so as to drive the connecting seat 603 to different positions, thereby adapting to more working scenarios, and the elastic value of the elastic arm 602 is designed to keep the elastic arm 602 at the deformed position after the elastic deformation, so that the connecting seat can be kept at the target position after reaching the target position. One application scenario is that the wrench device is used in the disassembly and replacement process of a track fastener to disassemble or assemble the nut of the track fastener. In this application scenario, the roller 601a of the sliding table is adapted to be clamped on both sides of the track and can roll along the track, and the two wrenches of the wrench device are respectively located on both sides of the track and are respectively used to disassemble or assemble the nuts on both sides of the track fastener. Of course, the wrench device is not limited to this application scenario.

[0055] For example, Figure 2In this embodiment, the connecting seat 603 comprises a fixed seat part 603a, a sliding seat part 603c and a positioning shaft 603b. The fixed seat part 603a is connected to the elastic arm 602. The sliding seat part 603c is connected to the long round hole of the fixed seat part 603a by a fastener. After loosening the fastener, the sliding seat part 603c can slide in the long round hole of the fixed seat part 603a. The sliding seat part 603c can adopt a C-shaped plate structure. The wrench is connected to the sliding seat part 603c. The sliding seat part 603c can drive the wrench to slide relative to the fixed seat part 603a. The sliding direction can be perpendicular to the sliding direction of the sliding table. In this way, the position of the wrench can be adjusted flexibly. For example, in the above-mentioned application scenario, the distance between the two wrenches can be made closer, so as to adapt to a narrower track, or the distance between the two wrenches can be made farther, so as to adapt to a wider track. The fixed seat part 603a is provided with a scale. The sliding distance of the wrench relative to the fixed seat part 603c and the position of the wrench can be determined through the scale. The positioning shaft 603b is connected below the fixed seat part 603a, which plays a role in supporting and positioning the fixed seat part 603a.

[0056] It should be noted that the structure of the connecting seat and the overall structure of the sliding assembly are not limited to the above-mentioned embodiments. Any structure that can drive the wrench to slide and assemble the wrench can be used.

[0057] In the illustrated embodiment, the structures of the two wrenches are the same. The structure of one wrench will be introduced below as an example. The wrench shown in the figure is an impact wrench. In actual implementation, a straight torque wrench or other forms of impact wrenches can also be used.

[0058] As shown in the figure, in addition to the above-mentioned control mechanism 50, the wrench is also provided with an impact mechanism 10, an output mechanism 20, a damping mechanism 30 and an operation mechanism 40. The following will introduce these mechanisms in detail: Figure 3

[0059] Impact mechanism 10 and output mechanism 20 As shown in the figure, the impact mechanism 10 comprises a housing 106 and a motor 101, a speed reduction part 102, a drive shaft 103, an elastic part 104, an impact block 105 and a guide rail pair 107 assembled in the housing 106. The motor 101 can adopt a brushless motor. The impact block 105 is provided with a first protrusion 105a. The output shaft 201 of the output mechanism 20 is provided with a second protrusion 201a. When the impact block 105 is at the initial position, the first protrusion 105a of the impact block 105 overlaps with the second protrusion 201a of the output shaft 201 in the axial direction (the state shown in the figure), and the first protrusion 105a and the second protrusion 201a are spaced apart in the circumferential direction.

[0060] Figure 4 The operation process of the impact mechanism 10 is as follows:

[0061] The operation process of the impact mechanism 10 is as follows:

[0062] ​The power of the motor 101 is transmitted to the driving shaft 103 through the deceleration component 102, which drives the driving shaft 103 to rotate around its axis, and further drives the impact block 105 to rotate, so that the impact block 105 rotates from the initial position to the position in contact with the second protrusion 201a, and the instant contact will impact the second protrusion 201a, thereby driving the output shaft 201 to rotate;

[0063] After the first protrusion 105a contacts the second protrusion 201a, the impact block 105 will be subjected to resistance from the output shaft 201, and under the action of the resistance, the impact block 105 cannot rotate synchronously with the driving shaft 103 but will rotate relative to the driving shaft 103. Under the guidance of the guide rail pair 107, the impact block 105 will also move axially towards the elastic component 104 while rotating relative to the driving shaft 103, thereby enabling the elastic component 104 to store energy;

[0064] After moving to a certain position, the first protrusion 105a of the impact block 105 and the second protrusion 201a of the output shaft 201 no longer overlap in the axial direction but are staggered with each other, at which time the elastic component 104 will release the elastic energy to reset the impact block 105 to the initial position, thereby repeating the above impact process again, and so on, until the motor 101 is turned off.

[0065] The rotation of the output shaft 201 drives the sleeve or cylinder connected to the end of the output shaft 201 to rotate, the sleeve is sleeved outside the nut, bolt or other parts to be loosened or tightened, and the cylinder extends into the counterbore of the nut, bolt or other parts to be loosened or tightened, thereby driving the nut, bolt or other parts to rotate, so as to loosen or tighten.

[0066] Damping mechanism 30

[0067] The damping mechanism 30 is connected between the operating mechanism 40 and the impact mechanism 10, which can effectively block the transmission of the vibration to the operating mechanism 40, thereby reducing the hand vibration sensation of the user.

[0068] As Figure 5 , the damping mechanism 30 includes a connecting piece 301, a first elastic damping piece 302, a fixed part 303 and a second elastic damping piece 304. The connecting piece 301 includes a first connecting part 301a, a second connecting part 301b and a third connecting part 301c.

[0069] As Figure 5The first connecting part 301a is connected with the operating mechanism 40 (in the figure, the support shaft 402b is a part of the operating mechanism 40), in the shown scheme, the first connecting part 301a adopts a sleeve structure, which is sleeved outside the support shaft 402b, and the inner hole of the sleeve is provided with a limiting stop table at one end, and one end of the support shaft 402b is positioned against the stop table. Of course, the first connecting part 301a is not limited to the sleeve structure, and any structure that can be connected with the operating mechanism 40 is available.

[0070] As shown in Figure 5 , the second connecting part 301b is axially staggered with the impact mechanism 10, so that an axial spacing space is formed between the second connecting part 301b and the impact mechanism 10. The first elastic damping member 302 is arranged in the axial spacing space. Figure 6 The two ends of the first elastic damping member 302 are connected with the fixing parts 303, and the fixing parts 303 at the two ends are spaced apart and do not contact each other. The fixing parts 303 can be made of metal, the first elastic damping member 302 can be made of rubber, and the fixing parts 303 and the first elastic damping member 302 can be vulcanized together. Figure 5 One end of the first elastic damping member 302 is connected with the second connecting part 301b through the fixing part 303, and the other end is connected with the shell 106 of the impact mechanism 10 through the fixing part 303. Specifically, fastening screws, fastening nuts and the like can be used to realize the connection, or the threads on the fixing part 303 itself can be used to realize the connection. With this structure, it is ensured that the connecting part 301 and the impact mechanism 10 are only elastically contacted by the first elastic damping member 302 in the axial direction, and there is no rigid contact, so that the transmission of the vibration of the impact mechanism 10 to the operating mechanism 40 is effectively blocked.

[0071] In the shown scheme, the second connecting part 301b adopts a flange plate, which is convenient for connecting the fixing part 303, and of course, it is not limited to the flange plate, and any structure that can be connected with the fixing part 303 is available. In the shown scheme, the second connecting part 301b is arranged above the top end of the impact mechanism 10, and the axial spacing space is formed between the second connecting part 301b and the top end surface of the impact mechanism 10, or a flange can be provided on the outer periphery of the impact mechanism 10, and the second connecting part 301b is arranged above the flange, and the axial spacing space is formed between the flange and the second connecting part 301b.

[0072] As shown in Figure 5The third connecting part 301c at least partially surrounds the outer periphery of the impact mechanism 10 and is radially offset from the impact mechanism 10, so that a radial spacing space is formed between the impact mechanism 10 and the third connecting part 301c. The second elastic damping member 304 is arranged in the radial spacing space and is in close contact with the impact mechanism 10 and the third connecting part 301c. The second elastic damping member 304 further blocks the transmission of the vibration of the impact mechanism 10 to the operating mechanism 40, and can further position the damping mechanism 30 to stabilize the radial position of the damping mechanism 30. The second elastic damping member 304 can adopt a ring structure, or a plurality of block structures uniformly and evenly arranged in the circumferential direction.

[0073] It should be noted that if the radial stiffness of the first elastic damping member 302 is set to be large enough, the second elastic damping member 304 can not be provided. However, the radial stiffness of the first elastic damping member 302 should not be too large, otherwise the damping performance will be affected. It is preferred to provide the first elastic damping member 302 and the second elastic damping member 304, and to configure appropriate stiffness for the two members.

[0074] As shown in the drawings, Figure 5 The inner periphery of the third connecting part 301c and / or the outer periphery of the impact mechanism 10 is provided with a groove 1 matched in shape and size with the outer surface of the second elastic damping member 304, so as to accommodate the second elastic damping member 304. In the illustrated scheme, a groove 106a is provided on the outer periphery of the impact mechanism 10, and the second elastic damping member 304 is partially embedded in the groove 106a. In this way, the second elastic damping member 304 can be positioned and installed without the aid of other connecting parts, which is beneficial to simplify the structure.

[0075] In the illustrated scheme, the third connecting part 301c adopts a sleeve structure, but it is not limited to the sleeve structure, and any structure that can surround the outer periphery of the impact mechanism 10 can be used. In the scheme, two sleeve structures are connected to the two ends of the flange plate, and the two sleeve structures can be integrally formed with the flange plate.

[0076] Operating mechanism 40

[0077] As shown in the drawings, Figure 3The operating mechanism 40 comprises an operating mechanism body 401, which comprises an input component for user to input instructions, a first holding member 401a and a second holding member 401b provided with an anti-skid structure B. The input component can adopt a key structure, and in the figure, the input component comprises a start key 401d. Of course, the input component can also adopt a touch screen structure. In the figure, the start key 401d is assembled on the surface of the first holding member 401a, and when the user holds the first holding member 401a, the start key 401d will be pressed. After the start key 401d is pressed, the control mechanism 50 receives an instruction to start the motor 101, thereby controlling the motor 101 to start. In the scheme shown in the figure, two first holding members 401a are configured, and the holding directions of the two first holding members 401a are different, so that in use, the user can select the first holding member 401a which is convenient to hold according to the position where the user is located. During the operation of the wrench or the movement of the wrench, the user can hold the second holding member 401b.

[0078] It should be noted that the instructions input by the user through the input component are not limited to the start instruction, and can also include instructions to indicate the forward rotation or reverse rotation of the motor of the wrench, instructions to indicate the speed gear of the motor of the wrench if the motor is provided with multiple gears, instructions to indicate the on-off of the illuminating lamp of the wrench if the wrench is provided with an illuminating lamp, and instructions to indicate the on-off of the display of the wrench if the wrench is provided with a display. Different instructions can be input through different input components or through different operations on the same input component.

[0079] As shown in the figure, Figure 3 The operating mechanism 40 further comprises a support 402, and the operating mechanism body 401 and the control mechanism 50 are connected to the support 402. Specifically, the support 402 comprises a carrier 402a, a support arm 402c connected to the carrier 402a and a support shaft 402b connected to the carrier 402a, the control mechanism 50 is loaded on the carrier 402a, the top of the support arm 402c extends above the control mechanism 50 by passing around the control mechanism 50, and the holding members of the operating mechanism body 401 are connected to the top of the support arm 402c. In this way, the structure is compact and space-saving.

[0080] In this embodiment, in addition to the start key 401d, the first holding member 401a is also assembled with a protection key 401c. As shown in the figure, Figure 7The first holding member 401a has an inner cavity, and the protective button 401c has an abutting portion at one end. When the protective button 401c is not pressed, the abutting portion of the protective button 401c abuts against the starting button 401d, so that the starting button 401d cannot be pressed. When the protective button 401c is pressed, the abutting portion of the protective button 401c avoids the starting button 401d, so that the starting button 401d can be normally pressed. With this structure, the starting button 401d can be pressed only after the protective button 401c is pressed, so that the problem of accidental pressing of the starting button 401d and thus the wrench being started by mistake and causing a safety accident can be avoided.

[0081] The protective button 401c and the starting button 401d are both arranged on the first holding member 401a. When a user holds the first holding member 401a, the protective button 401c and the starting button 401d can be pressed at the same time, so that the problem of the user's operation being complicated due to the arrangement of the protective button 401c can be overcome. Preferably, the protective button 401c is arranged at a position where the first holding member 401a is held first, and the starting button 401d is arranged at a position where the first holding member 401a is held later, so that the protective button 401c can be pressed first and then the starting button 401d can be pressed every time the wrench is held. Generally, the upper part of the first holding member 401a is held first, and the lower part of the first holding member 401a is held later, so that the protective button 401c can be arranged on the upper part of the first holding member 401a, and the starting button 401d can be arranged on the lower part of the first holding member 401a. The protective button 401c and the starting button 401d are arranged in a relative arrangement.

[0082] Further, the wrench can further have a collecting mechanism. The collecting mechanism is configured to collect current operation data of the motor in real time. The control mechanism is in communication connection with the collecting mechanism, so that the control mechanism can calculate the current output torque of the output mechanism and / or determine the current operation state of the motor and / or control the motor to start and stop according to the current operation data of the motor and / or the instruction input by the user.

[0083] The collecting mechanism includes but is not limited to a current sensor and a rotating speed sensor. The current sensor is configured to collect the current of the motor, and the rotating speed sensor is configured to collect the rotating speed of the motor.

[0084] Specifically, the current output torque of the output mechanism of the wrench can be calculated in the following manner. First, the starting time of the impact block of the wrench impacting the output mechanism is determined according to the change of the current of the motor. Specifically, the starting time of the impact block of the wrench impacting the output mechanism is the time when the current suddenly increases. Then, the current output torque of the output mechanism is calculated according to a preset formula every predetermined time from the starting time until the control mechanism controls the motor to stop. The preset formula is: the current output torque of the output mechanism = the current rotating speed of the motor × the current impact time × the gear coefficient × the constant × the power voltage feedback coefficient. The gear coefficient corresponding to different rotating speed gears is different. In one embodiment, the predetermined time is every 0.1 s.

[0085] Specifically, the motor can be controlled to start and stop in the following manner: first, the motor is controlled to start according to the "instruction indicating starting of the motor" and / or the "instruction indicating the speed gear of the motor" input by the user; then, the motor is controlled to stop when the running time of the motor reaches a preset time length. The preset time length corresponding to different speed gears can be different.

[0086] Further, the wrench can be further provided with a display. The display can be a liquid crystal display, a digital tube display, etc. The control mechanism is in communication connection with the display, so that the control mechanism can control the display to turn on and off and / or control the display to display the calculated current output torque of the output mechanism and / or the current running information of the motor and / or the instruction input by the user and / or warning information according to the instruction input by the user. The current running information of the motor includes speed, direction, gear, start, stop, fault, etc. The user can determine whether the wrench has reached the required torque for operation by checking the calculated current output torque. To facilitate the user to check, the display can be controlled to still display the interface of the current output torque for a period of time after the motor stops, and then return to the main interface or other interface.

[0087] Specifically, the display can be controlled to display warning information in the following manner: the display is controlled to display warning information when the running time of the motor is less than the above-mentioned preset time length. The warning information can be text and / or pictures and / or sound. After the user sees the warning information, the user can try to operate again. If the warning information still appears, it indicates that the wrench is faulty.

[0088] Further, the wrench can be further provided with a torque detection mechanism for detecting the current output torque of the output mechanism. The torque detection mechanism includes but is not limited to a torque sensor. The control mechanism can be in communication connection with the torque detection mechanism, so that the control mechanism can control the display to display the detected current output torque of the output mechanism. The user can determine whether the wrench is normal by comparing whether there is a significant difference between the calculated current output torque of the output mechanism displayed on the display and the detected current output torque of the output mechanism.

[0089] Further, the wrench can be further provided with an illuminating lamp. In one embodiment, the illuminating lamp is installed outside the shell 106, and the illuminating lamp is provided with a plurality of LED lamp beads in the circumferential direction, and the focal points of the plurality of LED lamp beads are located at one end of the output shaft 201 connected with the sleeve or the column, so that a better illumination effect can be obtained. Of course, the structure and installation position of the illuminating lamp can be flexibly adjusted according to actual needs. The control mechanism is in communication connection with the illuminating lamp, so that the control mechanism can control the illuminating lamp to turn on and off and / or control the illuminating lamp to emit warning light according to the instruction of the user.

[0090] Specifically, the control mechanism can control the lighting lamp to open and close based on the user inputted instruction of opening and closing the lighting lamp, or can control the lighting lamp to open and close based on the built-in time program or built-in trigger program.

[0091] Specifically, the lighting lamp can be controlled to emit warning light in the following manner: when the running time of the motor is less than the preset time, the lighting lamp is controlled to emit warning light. The warning light can be light that flashes at a specific frequency, or light that has a specific color, or light that has a specific brightness, etc. After the user sees the warning light, the user can try the operation again. If the warning light still appears, it indicates that the wrench is malfunctioning.

[0092] Further, the control mechanism can be provided with a power-off storage component that saves the current user inputted instruction when power is off. When power is on again, the control mechanism can directly use the instruction stored in the power-off storage component as the current instruction, but if the user re-inputs an instruction, the control mechanism controls the power-off storage component to no longer save the instruction, and uses the user re-inputted instruction as the current instruction.

[0093] Further, the control mechanism can be provided with a counter for recording the number of times that the single running time of the motor reaches the preset time. The control mechanism controls the display to display the recorded number of times, and then can further control the display to return to the main interface. If the motor is started and runs, but the running time does not reach the preset time, it is not recorded. When the recorded number of times reaches a preset number of times, information reminding the user to maintain can also be displayed on the display.

[0094] In summary, the wrench device and the control method of the wrench device provided by the present application realize the online control of two or more wrenches, so that the operating personnel can control multiple wrenches at the same time with one operation, and the wrench can be driven to the next operation position by pushing the sliding assembly, without the need for manual carrying, thereby reducing the labor intensity of the operating personnel, thereby reducing the failure rate. At the same time, the online control also ensures the consistency of the torque output of multiple wrenches, and realizes the functions of automatic shutdown, automatic calculation and display of torque, automatic detection and display of torque, automatic error reporting, etc., making the operation more intelligent.

[0095] The wrench device and the control method of the wrench device provided by the present application are described in detail above. Specific examples are applied in this paper to describe the principles and implementation modes of the present application. The above description of the embodiments is only used to help understand the method and core idea of the present application. It should be noted that, for those skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in many ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A control method of a wrench device, characterized by, The wrench device comprises: at least two wrenches, each of which is provided with a control mechanism; a sliding assembly, all the wrenches are assembled on the sliding assembly and slide synchronously with the sliding assembly; the sliding assembly comprises a sliding table, an elastic arm connected to the sliding table, and a connecting seat connected to the elastic arm; the wrench is installed on the connecting seat, and the elastic arm can drive the connecting seat together with the wrench to move to a target position and remain at the target position by using its own elasticity; the connecting seat comprises a fixed seat part fixed with the elastic arm and a sliding seat part capable of sliding perpendicular to the sliding direction of the sliding table, the wrench is connected to the sliding seat part, and the fixed seat part is provided with a scale for indicating the position of the sliding seat part and the sliding distance relative to the fixed seat part; an online mechanism, the control mechanisms of all the wrenches are communicatively connected through the online mechanism, so that when the online mechanism is turned on, the control mechanism of one wrench can control all the wrenches; each of the wrenches is provided with a motor, an output mechanism driven by the motor, an impact block driven by the motor and used for impacting the output mechanism, and an acquisition mechanism used for acquiring current operation data of the motor in real time; the acquisition mechanism comprises a current sensor and a rotation speed sensor, the control mechanism is communicatively connected with the acquisition mechanism, so that the control mechanism can calculate the current output torque of the output mechanism and judge the current operation state of the motor according to the current operation data of the motor; each of the wrenches is provided with a torque detection mechanism used for detecting the current output torque of the output mechanism; the control method comprises: turning off the online mechanism, and each of the wrenches is controlled by the respective control mechanism; or, turning on the online mechanism, and the control mechanism of one wrench controls all the wrenches; acquiring the current operation data of the motor, and the acquired current operation data of the motor comprises current and rotation speed; calculating the current output torque of the output mechanism and judging the current operation state of the motor according to the acquired current operation data of the motor; the method for calculating the current output torque of the output mechanism is: judging the starting moment of the impact block impacting the output mechanism according to current change; calculating the current output torque of the output mechanism once every predetermined time from the starting moment according to a preset formula until the control mechanism controls the motor to stop; the preset formula is: current output torque of the output mechanism = current motor rotation speed × current impact time × gear position coefficient × constant × power voltage feedback coefficient; the gear position coefficients corresponding to different rotation speed gears are different; controlling the wrench according to the instruction input by the user; the instruction input by the user comprises an instruction indicating the forward rotation or reverse rotation of the motor of the wrench, an instruction indicating the rotation speed gear of the motor of the wrench, and an instruction indicating the start of the motor of the wrench; controlling the motor to start according to the instruction indicating the rotation speed gear of the motor of the wrench and the instruction indicating the start of the motor of the wrench; and controlling the motor to stop when the operation time length of the motor reaches a preset time length.

2. The control method of the wrench device according to claim 1, characterized by, Each wrench is provided with an input component for user to input instructions; the control mechanism is in communication connection with the input component, so that the control mechanism can control the wrench according to the instructions input by the user.

3. The control method of the wrench device according to claim 2, characterized by, Each wrench is provided with a display; the control mechanism is in communication connection with the display, so that the control mechanism can control the display to open and close and / or control the display to display the current output torque of the output mechanism calculated and / or display the current running information of the motor and / or display the instructions input by the user and / or display warning information; The control method comprises: controlling the display of the wrench to open and close according to the instructions input by the user, and / or controlling the display to display the current output torque of the output mechanism calculated, and / or controlling the display to display the current running information of the motor, and / or controlling the display to display the instructions input by the user, and / or controlling the display to display warning information.

4. The control method of the wrench device according to claim 3, characterized by The method of controlling the display to display warning information is: when the running time of the motor is less than the preset time, controlling the display to display warning information.

5. The control method of the wrench device according to claim 3, wherein The control mechanism is in communication connection with the torque detection mechanism, so that the control mechanism can control the display to display the current output torque of the output mechanism detected; the control method comprises: controlling the display to display the current output torque of the output mechanism detected.

6. The control method of the wrench device according to claim 1, wherein Each wrench is provided with an illuminating lamp; the control mechanism is in communication connection with the illuminating lamp, so that the control mechanism can control the illuminating lamp to open and close and / or control the illuminating lamp to emit warning light according to the instructions input by the user; the control method comprises: controlling the illuminating lamp to open and close and / or controlling the illuminating lamp to emit warning light according to the instructions input by the user.

7. The control method of the wrench device according to claim 6, wherein The method of controlling the illuminating lamp to emit warning light is: when the running time of the motor is less than the preset time, controlling the illuminating lamp to emit warning light.

8. The control method of the wrench device according to any one of claims 1 to 7, characterized in that, The control mechanism comprises a counter for recording the number of times that the single running time of the motor reaches the preset time; The control method comprises: recording the number of times that the single running time of the motor reaches the preset time, and controlling the display of the wrench to display the recorded number of times.

9. The control method of the wrench device according to any one of claims 1 to 7, characterized in that, The control mechanism comprises a power-off storage component for saving the current instructions input by the user when power is off; the control method comprises: saving the current instructions input by the user when power is off until the user inputs instructions again.

10. The control method of the wrench device according to any one of claims 1 to 7, characterized by, The bottom of the sliding table is provided with a roller which can be adapted to a track, the part to be screwed is a part of the track, at least one wrench is located on one side of the track, and at least one wrench is located on the other side of the track.

Images