Lithium battery wrench based on multi-dimensional perceptual control

Abstract

The utility model discloses a lithium battery wrench based on multi-dimensional perceptual control, which comprises a lithium battery wrench main body with a multi-dimensional perceptual control device, a brushless direct current motor and a wrench head assembly driven by the brushless direct current motor are arranged in the lithium battery wrench main body, and the multi-dimensional perceptual control device comprises a current sensing module and a processor module. The current sensing module collects the current of the brushless direct current motor in real time and transmits the current to the processor module; compared with the prior art, the device has the advantages that the structure is simple, the device can be suitable for various thread assembly technologies such as fixed torque and fixed rotating angle screwing, the torque and the rotating angle are controlled and sensed in a multi-dimensional mode in the screwing process, and the device has good quality control capacity. And a cooling fan is arranged, so that the cooling effect is excellent.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric tool technical field, concretely relates to a lithium battery wrench based on multi -dimensional perception control. BACKGROUND

[0002] The wrench has wide application in daily life, and it is usually used to tighten or unscrew the screw and nut. With the continuous progress of industrial technology and the promotion of intelligent wave, the traditional manual tool is gradually replaced by electric and intelligent tool. Among many electric tools, the lithium battery wrench has been widely concerned and applied due to its advantages of light, efficient and environmental protection. However, the existing lithium battery wrench still has certain deficiencies in precision control, operation convenience and environmental adaptability, and it is difficult to meet the increasing demand of high-end market. Moreover, the existing lithium battery wrench cannot adapt to various specifications of bolts and nuts, so it is very important to obtain a lithium battery wrench based on multi-dimensional perception control which overcomes the above defects. SUMMARY

[0003] In order to solve at least one of the above technical problems, the utility model provides a lithium battery wrench based on multi-dimensional perception control, which comprises a lithium battery wrench main body with a multi-dimensional perception control device, a brushless DC motor arranged in the lithium battery wrench main body, and a wrench head assembly driven by the brushless DC motor. The multi-dimensional perception control device comprises a current sensing module and a processor module. The current sensing module collects the current of the brushless DC motor in real time and transmits it to the processor module. The wrench head assembly comprises a plurality of replaceable connecting heads connected to the output port of the shell through a first bearing. At least one first sliding groove is formed on the inner ring of the first bearing. A first sliding block matched with the first sliding groove is arranged on the connecting head. The tail part of the connecting head forms a transmission part. The transmission part is circumferentially provided with uniformly distributed transmission teeth. The output shaft of the brushless DC motor is fixed with a driving gear meshing with the transmission teeth. An installation groove for accommodating the first bearing is formed in the end part of the shell, and an end cover detachably connected with the end part of the shell is arranged. The first bearing is limited by the inner wall of the end cover.

[0004] Through the above technical solution, the multi-dimensional perception control device is provided, that is, the current value and the rotation angle of the DC motor are sensed and collected in real time. The final torque value and the final rotation angle value are calculated according to the collected current value of the DC motor, and the torque rotation angle coefficient is calculated, which is used to measure the fastening quality of the bolt group. The calculation method of the torque rotation angle coefficient is: torque rotation angle coefficient = final torque value / final rotation angle value.

[0005] The cross section of the first sliding block and the first sliding groove is arc surface, and the tangent part of the two is a straight line, which is convenient for inserting when selecting the connecting head. The transmission teeth and / or the driving gear are provided with a guide slope, which is convenient for installation and meshing.

[0006] The processor module of the perception control device is in communication connection with the brushless direct current motor through a servo control module, and is used for realizing adaptive control of the speed, direction, angle and torque of the brushless direct current motor according to a preset speed, torque, angle and received current of the brushless direct current motor, and realizing torque and angle perception when realizing fixed torque control and / or fixed angle control.

[0007] The utility model discloses a perception control device, make lithium electric wrench can automatically adjust output torque according to the required working strength, realize accurate control current induction module is hall effect direct current sensor, be used for realizing accurate collection of brushless direct current motor current, current induction module still includes motor current sampling resistance, and the processor module collects the voltage value on the motor current sampling resistance in real time.

[0008] The inner ring of the first bearing is provided with a limiting ring to form a stepped surface to limit the insertion depth of the connecting head. The inner wall of the end cover is provided with a plurality of balls.

[0009] The brushless motor of the shell can be provided with a plurality of heat dissipation holes to increase heat dissipation, or a heat dissipation fan is fixed at the output shaft of the brushless motor, which can not only drive the connecting head simultaneously, but also has a heat dissipation effect, ensuring that the tool can dissipate heat quickly under high load working.

[0010] Compared with the prior art, the utility model has the advantages that the utility model has simple structure, can be applied to various thread assembly processes such as fixed torque and fixed angle tightening, has good quality control ability in multi-dimensional control and perception of torque and angle during tightening, and is provided with a heat dissipation fan, and has excellent heat dissipation effect. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a cross-sectional schematic view of the utility model;

[0012] Figure 2 It is a matching structure schematic view of the connecting head and the inner ring of the first bearing of the utility model;

[0013] Figure 3 It is a side view of the transmission part of the connecting head of the utility model;

[0014] Figure 4 It is a structure block diagram of the multi-dimensional perception control device of the utility model;

[0015] REFERENCE SIGNS:

[0016] 1 multi-dimensional perception control device;101 current induction module;102 processor module;103 servo control module;104 charging lithium battery;105 charge management module;

[0017] 2 brushless DC motor;3 first bearing;4 housing;5 connector;6 first sliding slot;7 first sliding block;8 transmission part;9 drive gear;10 end cover;11 camber;12 guide slope;13 limit ring;14 heat dissipation hole;15 heat dissipation fan;16 inner ring;17 transmission tooth. DETAILED DESCRIPTION

[0018] In order to make the person skilled in the art better understand the utility model, so that the scope of protection required by the utility model is more clearly limited, the utility model is described in detail below according to some specific embodiments of the utility model. It should be noted that the following is only some specific embodiments of the concept of the utility model, and only a part of the embodiments of the utility model, and the specific and direct description of the related structure is only for the convenience of understanding the utility model, and each specific feature does not limit the implementation range of the utility model directly and directly.

[0019] Referring to the drawings, the utility model adopts the following technical scheme, a lithium electric wrench based on multi-dimensional perception control, including the lithium electric wrench main body with existing multi-dimensional perception control device 1, the lithium electric wrench main body is configured with brushless DC motor 2, wrench head assembly driven by brushless DC motor 2, the multi-dimensional perception control device 1 includes current induction module 101 and processor module 102, the current induction module 101 real-time acquisition current of brushless DC motor 2 and transmission to processor module 102;The wrench head assembly includes a plurality of replaceable connectors 5 connected at the output port of the housing 4 through the first bearing 3, at least one first sliding slot 6 is formed on the inner ring 16 of the first bearing 3, the first sliding block 7 matched with the first sliding slot 6 is arranged on the connector 5, the tail of the connector 5 forms a transmission part 8, the transmission part 8 is circumferentially arranged with uniformly distributed transmission teeth 17, the output shaft of the brushless DC motor 2 is fixed with the drive gear 9 engaged with the transmission teeth 17, the housing 4 end is provided with the installation groove for accommodating the first bearing 3 and the end cover 10 detachably connected with the end of the housing 4, and the first bearing 3 is limited by the inner wall of the end cover 10.

[0020] Through the above technical scheme, the utility model is provided with multi-dimensional perception control device 1, that is, the current value and rotation angle of DC motor are sensed and collected in real time, the final torque value and final rotation angle value are calculated according to the collected current value of DC motor, and the torque rotation angle coefficient is calculated, which is used to measure the fastening quality of bolt group, and the calculation method of torque rotation angle coefficient is as follows: torque rotation angle coefficient = final torque value / final rotation angle value.

[0021] The first slider 7 and the first sliding groove 6 are arc surfaces 11, and the tangent line of the two is a straight line.

[0022] The processor module 102 of the sensing control device is in communication connection with the brushless direct current motor 2 through the servo control module 103, and is used for realizing adaptive control of the speed, direction, angle and torque of the brushless direct current motor 2 according to the preset speed, torque, angle and received current of the brushless direct current motor 2, and realizing torque and angle sensing when realizing fixed torque control and / or fixed angle control.

[0023] The sensing control device is adopted, so that the lithium battery wrench can automatically adjust the output torque according to the required working strength, and realizes accurate control.

[0024] The inner ring 16 of the first bearing 3 is provided with a limiting ring 13 to form a stepped surface to limit the insertion depth of the connecting head 5. The inner wall of the end cover 10 is provided with a plurality of balls. The end cover 10 is in threaded connection, buckle connection or fastener connection with the shell 4.

[0025] A plurality of heat dissipation holes 14 can be formed at the brushless motor of the shell 4 to increase heat dissipation, or a heat dissipation fan 15 is fixed at the output shaft of the brushless motor, which can not only drive the connecting head 5, but also has a heat dissipation effect, so as to ensure that the tool can be quickly cooled when working under high load. The sensing control device can be arranged at the heat dissipation fan 15 in the shell 4, and the heat generated by the device can be taken away at the same time, so as to reduce the overall temperature of the tool and ensure that it can stably operate in a high temperature environment.

[0026] A charging lithium battery 104 for supplying power to the brushless direct current motor 2 and the sensing control device is arranged in the shell 4, and a charging management module 105 is arranged.

[0027] Compared with the prior art, the utility model has the advantages that the utility model structure is simple, can be suitable for fixed torque and fixed angle screwing and other various screwing processes, and has good quality control ability in multi-dimensional control and sensing of torque and angle during screwing. And the heat dissipation fan 15 is arranged, and the heat dissipation effect is excellent.

[0028] In the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0029] So far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without deviating from the principles of the utility model, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical schemes after these changes or replacements will fall within the protection scope of the utility model.

Claims

1. A lithium-ion battery wrench based on multi-dimensional sensing control, comprising a lithium-ion battery wrench body equipped with a multi-dimensional sensing control device (1), wherein a brushless DC motor (2) and a wrench head assembly driven by the brushless DC motor (2) are arranged in the lithium-ion battery wrench body, wherein the multi-dimensional sensing control device (1) comprises a current sensing module (101) and a processor module (102), wherein the current sensing module (101) collects the current of the brushless DC motor (2) in real time and transmits the current to the processor module (102); and wherein: The wrench head assembly includes a plurality of replaceable connectors (5) connected to the output port of the housing (4) through a first bearing (3), at least one first slide groove (6) is provided on the inner ring (16) of the first bearing (3), and a first slider (7) is provided on the connector (5) to cooperate with the first slide groove (6). The tail of the connector (5) forms a transmission part (8), and the transmission part (8) is circumferentially provided with uniformly distributed transmission teeth (17). The output shaft of the brushless DC motor (2) is fixed with a driving gear (9) meshing with the transmission teeth (17). The end of the housing (4) is provided with a mounting groove for accommodating the first bearing (3) and an end cover (10) detachably connected to the end of the housing (4), and the inner wall of the end cover (10) limits the first bearing (3).

2. The multi-dimensional perception control based lithium electric wrench of claim 1, wherein: The cross-sections of the first sliding block (7) and the first sliding groove (6) are arc surfaces (11), and the tangent point between the two is a straight line.

3. The multi-dimensional perception control based lithium electric wrench of claim 1, wherein: The transmission teeth (17) and / or the driving gear (9) are provided with a guide slope (12).

4. The multi-dimensional perception control based lithium electric wrench of claim 1, wherein: The processor module (102) of the perception control device is communicatively connected to the brushless DC motor (2) via a servo control module (103), and is used to realize adaptive control of the speed, direction, angle and torque of the brushless DC motor (2) according to preset speed, torque, angle and the current received from the brushless DC motor (2), as well as torque and angle perception during constant torque control and / or constant angle control.

5. The multi-dimensionally aware control based lithium electric wrench of claim 4, wherein: The current sensing module (101) is a Hall effect DC current sensor, used to accurately collect the current of the brushless DC motor (2); the current sensing module (101) also includes a motor current sampling resistor, and the processor module (102) collects the voltage value on the motor current sampling resistor in real time.

6. The multi-dimensional perception control based lithium electric wrench of claim 1, wherein: A limiting ring (13) is provided on the inner ring (16) of the first bearing (3) to form a step surface to limit the insertion depth of the connector (5).

7. The multi-dimensional perception control based lithium electric wrench of claim 1, wherein: A plurality of balls are provided on the inner wall of the end cover (10).

8. The multi-dimensionally aware control based lithium electric wrench of claim 7, wherein: The end cover (10) is connected to the housing (4) by threaded connection, snap connection or fastener connection.

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