A driving device for a rotor balancing machine for a new energy vehicle motor

Abstract

The present application discloses a driving device for a rotor balancing machine for a new energy vehicle motor, comprising a base, two driving arms symmetrically arranged on the base and capable of synchronously moving toward or away from each other, a bracket fixedly arranged on the base, a pulley assembly for driving the rotor to rotate, and a rotation driving assembly for driving the pulley assembly. In an embodiment of the present application, the above-mentioned driving device for a rotor balancing machine for a new energy vehicle motor is adopted, and the wrap angle of the belt on the rotor is composed of two parts, and the total wrap angle is large, which increases the limit value of the friction force of the belt on the rotor and reduces the possibility of the belt slipping on the rotor. Moreover, the main vector of the resultant force of the belt on the rotor is zero, and no additional measurement error will be caused. During the movement of the driving arm driving the belt to contact the rotor, the distance between the fifth driven pulley and the fourth driven pulley on the corresponding side is reduced, and the distance between the first driven pulley and the sixth driven pulley on the corresponding side is increased. The total effect makes the tension of the belt unchanged.

Description

Technical Field

[0001] The present invention relates to the technical field of rotor detection, and in particular to a driving device for a rotor balancing machine of a new energy vehicle motor. Background Art

[0002] When measuring the imbalance of the rotor, a motor is usually used to drive the rotor through a belt to reach the speed required for measurement. In the existing scheme, the cylinder drives the driving arm through a connecting rod mechanism to press the belt down to the rotor surface. For example, the Chinese patent application publication number CN109505934A discloses a "driving device for a new energy vehicle motor rotor balancing machine", which includes a driving mechanism base and a power assembly, a transmission assembly, a belt pressing assembly, a driving arm clamping assembly and a belt tensioning assembly installed on the driving mechanism base. When the rotor is tested, the driving arm of the belt pressing assembly controls the belt to fall to the rotor surface, and the driving arm clamping assembly presses the driving arm of the belt pressing assembly.

[0003] The above solutions have the following problems:

[0004] 1. The belt is pressed down on the rotor surface on one side, and the belt's wrap angle on the rotor is small, resulting in a small limit value of the friction force between the belt and the rotor during the measurement process, and the belt is prone to slipping on the rotor surface;

[0005] 2. The principal vector of the resultant force exerted by the belt on the rotor is not zero, which will cause additional measurement errors. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a driving device for a rotor balancing machine for a new energy vehicle motor, which has a large wrap angle, high measurement accuracy and strong applicability.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions.

[0008] The present application provides a driving device for a new energy vehicle motor rotor balancing machine, comprising:

[0009] Pedestal;

[0010] Two driving arms are symmetrically arranged on the base and can move synchronously towards and away from each other;

[0011] A bracket, fixedly arranged on the base;

[0012] A pulley assembly, used to drive the rotor to rotate;

[0013] A rotation drive assembly for driving the pulley assembly;

[0014] The pulley assembly includes a belt, a driving pulley connected to the rotation drive assembly, two first driven pulleys, a second driven pulley, a third driven pulley, a fourth driven pulley, which are symmetrical about the reference axis and are respectively rotatably arranged on two driving arms, and two fifth driven pulleys and a sixth driven pulley which are symmetrical about the reference axis and are rotatably arranged on the bracket;

[0015] Wherein, the reference axis plane is a symmetry plane of the two driving arms, the distance between the fifth driven pulley and the reference axis plane is greater than the distance between the fourth driven pulley reference axis plane, and the distance between the sixth driven pulley and the reference axis plane is less than the distance between the first driven pulley reference axis plane. After the belt is wound around the driving pulley, it successively passes around the sixth driven pulley, the first driven pulley, the second driven pulley, the third driven pulley, the fourth driven pulley, the fifth driven pulley on one side of the reference axis plane, and then passes around the fifth driven pulley, the fourth driven pulley, the third driven pulley, the second driven pulley, the first driven pulley, and the sixth driven pulley on the other side of the reference axis plane, and finally wraps back around the driving pulley to form a closed loop, the belt between the third driven pulley and the fourth driven pulley on the corresponding side is parallel to the reference axis plane, and the driving arm is provided with a space for accommodating a rotor between the third driven pulley and the fourth driven pulley.

[0016] It is further defined that the above-mentioned driving device for the new energy vehicle motor rotor balancing machine also includes a guide rail assembly arranged on the base and used to guide the two driving arms and a clamping driving assembly for driving the two driving arms to move.

[0017] It is further defined that the above-mentioned driving device for a rotor balancing machine for a new energy vehicle motor, wherein the guide rail assembly comprises:

[0018] A guide rail, fixedly arranged on an end surface of the base close to the driving arm;

[0019] A slider, symmetrical about the reference axis and slidably arranged on the guide rail;

[0020] Wherein, the slider is connected to the clamping drive assembly, and the two drive arms are respectively connected to the two sliders.

[0021] It is further defined that in the above-mentioned driving device for a rotor balancing machine for a new energy vehicle motor, the guide rail assembly further comprises:

[0022] A connecting plate, fixedly arranged on the end surface of the slider away from the guide rail;

[0023] An adjusting block is fixedly arranged on the end surface of the connecting plate away from the sliding block;

[0024] At least one travel groove is provided through the adjusting block;

[0025] A positioning bolt is slidably disposed in the travel groove and is threadedly connected to the connecting plate, and is used to fix the relative position of the adjustment block and the connecting plate;

[0026] Wherein, the sliding direction of the positioning bolt in the travel groove is the moving direction of the driving arm.

[0027] It is further defined that the above-mentioned driving device for a rotor balancing machine for a new energy vehicle motor, wherein the clamping driving assembly comprises:

[0028] A cylinder is fixedly arranged on a base;

[0029] Two claws are connected to the cylinder and can move synchronously toward or away from each other;

[0030] Wherein, the two clamping claws are respectively connected to corresponding position adjustment blocks.

[0031] It is further defined that the above-mentioned driving device for a rotor balancing machine for a new energy vehicle motor, wherein the rotation driving assembly comprises:

[0032] The motor is fixedly arranged on the base and is dynamically connected to the driving pulley.

[0033] It is further defined that the above-mentioned driving device for a rotor balancing machine for a new energy vehicle motor, wherein the rotation driving assembly further comprises:

[0034] The motor frame is fixedly arranged on the end surface of the base away from the driving arm;

[0035] The mounting plate is fixedly arranged on the motor frame and is fixedly connected to the motor.

[0036] It is further defined that the above-mentioned driving device for a new energy vehicle motor rotor balancing machine, wherein the first driven pulley, the second driven pulley, the third driven pulley, the fourth driven pulley, the fifth driven pulley and the sixth driven pulley are connected to the driving arm by a bearing stop pin and a fastening nut, and at least one adjustment groove is provided on the driving arm, and the bearing stop pin of one or more of the first driven pulley, the second driven pulley, the third driven pulley and the fourth driven pulley can slide in the adjustment groove.

[0037] The present invention has at least the following beneficial effects:

[0038] 1. When the equipment is running, the two driving arms move toward each other to control the belt between the third driven pulley and the fourth driven pulley on both sides to fit to the rotor surface, that is, the wrap angle of the belt on the rotor is composed of two parts, and the total wrap angle is large, which increases the limit value of the friction force of the belt on the rotor and reduces the possibility of the belt slipping on the rotor. In addition, the main vector of the resultant force of the belt on the rotor is zero, which will not cause additional measurement errors;

[0039] 2. During the movement of the driving arm driving the belt to contact the rotor, the distance between the fifth driven pulley and the fourth driven pulley on the corresponding side decreases, and the distance between the first driven pulley and the sixth driven pulley on the corresponding side increases. The total effect makes the tension of the belt unchanged, and the rotating drive assembly drives the driving pulley to rotate, thereby driving the rotor to rotate through the belt. The torque of the driving pulley is transmitted to the rotor surface through the belt, driving the rotor to reach the speed required for measurement, thereby measuring the unbalance amount;

[0040] 3. The positions of the two driving arms can be adjusted by adjusting the installation positions of the two adjustment blocks on the connecting plate, so as to be suitable for rotors with different outer diameters and meet the tension requirements of the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the structure of a driving device for a rotor balancing machine for a new energy vehicle motor according to an embodiment of the present application;

[0042] Figure 2 This is a schematic diagram of the structure of a driving device for a rotor balancing machine for a new energy vehicle motor according to an embodiment of the present application;

[0043] Figure 3 This is an enlarged schematic diagram of the "travel groove 750" portion of the driving device of the rotor balancing machine for new energy vehicle motors in the embodiment of the present application;

[0044] Figure 4 This is a schematic diagram of the structure of a driving device for a rotor balancing machine for a new energy vehicle motor according to an embodiment of the present application;

[0045] Figure 5 This is a schematic diagram of the structure of a driving device for a rotor balancing machine for a new energy vehicle motor according to an embodiment of the present application;

[0046] Figure 6 This is a schematic diagram of the structure of the support structure of the rotor balancing machine for a new energy vehicle motor according to an embodiment of the present application;

[0047] Figure 7 This is a schematic diagram of the structure of the support structure of the rotor balancing machine for a new energy vehicle motor according to an embodiment of the present application;

[0048] Figure 8 This is a schematic diagram of the structure of the support structure of the rotor balancing machine for a new energy vehicle motor according to an embodiment of the present application;

[0049] Fig. 9 This is a structural schematic diagram of the support structure "support frame 910" part of the rotor balancing machine for new energy vehicle motors in an embodiment of the present application;

[0050] Fig.10This is a structural schematic diagram of the supporting structure of the rotor balancing machine for a new energy vehicle motor in the embodiment of the present application, in which the "support frame 910" portion is hidden.

[0051] Reference numerals

[0052] Left driving arm 110, right driving arm 120, adjusting slot 121, bracket 200, first left driven pulley 301, first right driven pulley 302, second left driven pulley 303, second right driven pulley 304, third left driven pulley 305, third right driven pulley 306, fourth left driven pulley 307, fourth right driven pulley 308, fifth left driven pulley 309, fifth right driven pulley 310, sixth left driven pulley 311, sixth right driven pulley 312, belt 400, base 500, driving pulley 610, mounting plate 620, motor Frame 630, driving motor 640, driving connecting plate 650, cylinder 660, claw 670, guide rail 710, slider 720, connecting plate 730, adjusting block 740, travel groove 750, positioning bolt 760, rotor 810, rotating shaft 811, supporting frame 910, supporting cavity 911, first mounting groove 912, positioning frame 920, connecting rod 930, adjusting frame 940, accommodating cavity 941, through groove 942, second mounting groove 943, connecting rod 950, first hinge 960, second hinge 970, positioning wheel 980. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0054] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0055] The driving device for the rotor balancing machine of a motor of a new energy vehicle provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in combination with the accompanying drawings.

[0056] like Figure 1-Figure 5 As shown, an embodiment of the present application provides a driving device for a new energy vehicle motor rotor balancing machine, including a base 500, a left driving arm 110 and a right driving arm 120 symmetrically arranged on the base 500 and capable of synchronously moving toward or away from each other, a bracket 200 fixedly arranged on the base 500, a pulley assembly for driving the rotor 810 to rotate, and a rotation driving assembly for driving the pulley assembly.

[0057] The base 500 is provided with a guide rail assembly connected to the left driving arm 110 and the right driving arm 120 and a clamping driving assembly for driving the left driving arm 110 and the right driving arm 120 to move. The guide rail assembly includes a guide rail 710 fixedly arranged on the end surface of the base 500 close to the left driving arm 110 and the right driving arm 120. Two sliders 720 are slidably arranged on the guide rail 710. A connecting plate 730 is fixedly arranged on the end surface of the slider 720 away from the guide rail 710. An adjustment block 740 is fixedly arranged on the end surface of the connecting plate 730 away from the slider 720. The left driving arm 110 and the right driving arm 120 are fixedly connected to the two adjustment blocks 740 respectively.

[0058] The clamping drive assembly includes a drive connecting plate 650 fixedly mounted on the base 500, on which a cylinder 660 is mounted, on which two claws 670 capable of moving toward or away from each other are disposed, and two adjustment blocks 740 are fixedly connected to the corresponding claws 670, respectively.

[0059] When the cylinder 660 drives the two claws 670 to move toward or away from each other, the claws 670 drive the slider 720 to slide on the guide rail 710 through the adjustment block 740, thereby driving the left driving arm 110 and the right driving arm 120 to move toward or away from each other. When the left driving arm 110 and the right driving arm 120 move toward each other, they will drive the pulley assembly to wrap the rotor 810, and the rotating driving assembly can drive the rotor 810 to rotate through the pulley assembly.

[0060] It can be understood that the clamping drive assembly is used to drive the left drive arm 110 and the right drive arm 120 to achieve synchronous movement toward or away from each other, and the coupling method between the claw 670 and the left drive arm 110 and the right drive arm 120 is not limited to the above-mentioned one. For example, the two claws 670 can be fixedly connected to the corresponding position slider 720 and the connecting plate 730 respectively, or the two claws 670 can be directly connected to the left drive arm 110 and the right drive arm 120 respectively.

[0061] Of course, the structure of the clamping drive assembly itself is not limited to the above-mentioned one. For example, the matching structure of a screw rod and a threaded slider can be used to realize the movement control of the left drive arm 110 and the right drive arm 120, as long as the synchronous movement toward or away from each other of the left drive arm 110 and the right drive arm 120 can be realized.

[0062] In a preferred embodiment, Figure 1-Figure 5 As shown, the pulley assembly includes a belt 400 and a radially coplanar and axially parallel driving pulley 610, a first left driven pulley 301, a first right driven pulley 302, a second left driven pulley 303, a second right driven pulley 304, a third left driven pulley 305, a third right driven pulley 306, a fourth left driven pulley 307, a fourth right driven pulley 308, a fifth left driven pulley 309, a fifth right driven pulley 310, a sixth left driven pulley 311, and a sixth right driven pulley 312, wherein the driving pulley 610 is connected to the rotating drive assembly.

[0063] The first left driven pulley 301, the second left driven pulley 303, the third left driven pulley 305, and the fourth left driven pulley 307 are rotatably arranged on the left driving arm 110, the first right driven pulley 302, the second right driven pulley 304, the third right driven pulley 306, and the fourth right driven pulley 308 are rotatably arranged on the right driving arm 120, and the fifth left driven pulley 309, the fifth right driven pulley 310, the sixth left driven pulley 311, and the sixth right driven pulley 312 are rotatably arranged on the bracket 200, as shown in FIG. Figure 5 As shown, the sixth left driven pulley 311 and the sixth right driven pulley 312 are located on the upper side of the driving pulley 610 and are symmetrical about the reference axis plane, the fifth left driven pulley 309 and the fifth right driven pulley 310 are located on the upper side of the sixth left driven pulley 311 and the sixth right driven pulley 312 and are symmetrical about the reference axis plane, the distance between the fifth left driven pulley 309 and the fifth right driven pulley 310 and the reference axis plane is greater than the distance between the sixth left driven pulley 311 and the sixth right driven pulley 312 and the reference axis plane, wherein the reference axis plane is the symmetry plane of the left driving arm 110 and the right driving arm 120.

[0064] The axes of the first left driven pulley 301 and the first right driven pulley 302 are located on the same horizontal plane, and the horizontal plane is located between the horizontal plane where the fifth left driven pulley 309 and the fifth right driven pulley 310 are located and the horizontal plane where the sixth left driven pulley 311 and the sixth right driven pulley 312 are located; the second left driven pulley 303 and the second right driven pulley 304 are symmetrical about the reference axis plane, and the horizontal plane where the second left driven pulley 303 and the second right driven pulley 304 are located is located between the horizontal plane where the fifth left driven pulley 309 and the sixth left driven pulley 311 and the sixth right driven pulley 312 are located. The third left driven pulley 305 and the third right driven pulley 306 are symmetrical about the reference axis, and the horizontal plane where the third left driven pulley 305 and the third right driven pulley 306 are located is located on the upper side of the horizontal plane where the second left driven pulley 303 and the second right driven pulley 304 are located; the fourth left driven pulley 307 and the fourth right driven pulley 308 are symmetrical about the reference axis, and the horizontal plane where the fourth left driven pulley 307 and the fourth right driven pulley 308 are located is located on the upper side of the horizontal plane where the second left driven pulley 303 and the second right driven pulley 304 are located. The horizontal plane where the pulley 303 and the second right driven pulley 304 are located is between the horizontal plane where the fifth left driven pulley 309 and the fifth right driven pulley 310 are located; wherein the distance between the first left driven pulley 301 and the first right driven pulley 302 and the reference axis plane is greater than the distance between the sixth left driven pulley 311 and the sixth right driven pulley 312 and the reference axis plane, and the distance between the third left driven pulley 305 and the third right driven pulley 306 and the reference axis plane is less than the distance between the fifth left driven pulley 309 and the fifth right driven pulley The distance between the driven pulley 310 and the reference axis plane, the axes of the third left driven pulley 305 and the fourth left driven pulley 307 are located on the same vertical plane, the axes of the third right driven pulley 306 and the fourth right driven pulley 308 are located on the same vertical plane, and the left driving arm 110 is provided with a space for accommodating the rotor 810 between the third left driven pulley 305 and the fourth left driven pulley 307, and the right driving arm 120 is provided with a space for accommodating the rotor 810 between the third right driven pulley 306 and the fourth right driven pulley 308.

[0065] like Figure 5 As shown, after the belt 400 is wound around the driving pulley 610, it successively winds around the right side of the sixth left driven pulley 311, the left side of the first left driven pulley 301, the left side of the second left driven pulley 303, the upper side of the third left driven pulley 305, the right side of the fourth left driven pulley 307, the left side of the fifth left driven pulley 309, the right side of the fifth right driven pulley 310, the left side of the fourth right driven pulley 308, the upper side of the third right driven pulley 306, the right side of the second right driven pulley 304, the right side of the first right driven pulley 302, the left side of the sixth right driven pulley 312, and finally winds back around the driving pulley 610 to form a closed loop.

[0066] In an embodiment of the present application, the above-mentioned driving device for a new energy vehicle motor rotor balancing machine is adopted. When the equipment is running, the cylinder 660 drives the synchronous left driving arm 110 and the right driving arm 120 to move toward each other through the two claws 670 to control the belt 400 between the third left driven pulley 305 and the fourth left driven pulley 307, and between the third right driven pulley 306 and the fourth right driven pulley 308 to fit to the surface of the rotor 810, that is, the wrap angle of the belt 400 on the rotor 810 is composed of two parts, the left and right parts, and the total wrap angle is large, which increases the limit value of the friction force of the belt 400 on the rotor 810 and reduces the possibility of the belt 400 slipping on the rotor 810. Moreover, the main vector of the resultant force of the belt 400 on the rotor 810 is zero, which will not cause additional measurement errors.

[0067] At the same time, during the movement of the left driving arm 110 and the right driving arm 120 driving the belt 400 to contact the rotor 810, the distance between the fifth left driven pulley 309 and the fourth left driven pulley 307, the distance between the fifth right driven pulley 310 and the fourth right driven pulley 308 decreases, and the distance between the first left driven pulley 301 and the sixth left driven pulley 311, and the distance between the first right driven pulley 302 and the sixth right driven pulley 312 increases. The total effect makes the tension of the belt 400 unchanged. Then, the rotating drive assembly drives the active pulley 610 to rotate, thereby driving the rotor 810 to rotate through the belt 400. The torque of the active pulley 610 is transmitted to the surface of the rotor 810 through the belt 400, driving the rotor 810 to reach the speed required for measurement, thereby measuring the imbalance.

[0068] It is understandable that the structure of the pulley assembly is not limited to the above-mentioned one. For example, additional transition pulleys may be provided between the second left driven pulley 303 and the third left driven pulley 305, and between the second right driven pulley 304 and the third right driven pulley 306 according to actual conditions, or the second left driven pulley 303 and the second right driven pulley 304 may be directly eliminated, as long as the tension of the belt 400 can be kept unchanged during the synchronous movement of the left driving arm 110 and the right driving arm 120 toward each other.

[0069] In a preferred embodiment, Figure 1 , Figure 2 As shown, the rotation drive assembly includes a motor frame 630 fixedly arranged on the end surface of the base 500 away from the left drive arm 110 and the right drive arm 120. The drive motor 640 is fixed to the motor frame 630 through the mounting plate 620, and the driving pulley 610 is power-connected to the drive motor 640.

[0070] It is understandable that the structure of the rotation drive assembly is not limited to the above one. For example, a multi-stage transmission mechanism can be provided between the drive motor 640 and the driving pulley 610 as long as the driving pulley 610 can be rotationally driven.

[0071] In a preferred embodiment, Figure 2 , Figure 3 As shown, at least one travel groove 750 is provided through the adjustment block 740, and a positioning bolt 760 threadedly connected to the connecting plate 730 is slidably provided in the travel groove 750, and the sliding direction of the positioning bolt 760 in the travel groove 750 is the moving direction of the left driving arm 110 and the right driving arm 120. When the positioning bolt 760 is in a loosened state, the adjustment block 740 can move relative to the positioning bolt 760, thereby driving the left driving arm 110 and the right driving arm 120 to move relative to the connecting plate 730, thereby realizing the distance adjustment between the left driving arm 110 and the right driving arm 120.

[0072] Before the equipment is operated, the installation positions of the two adjustment blocks 740 on the connecting plate 730 are adjusted respectively according to the outer diameter of the rotor 810 and the tensioning force required to drive the rotor 810, so as to adjust the positions of the left driving arm 110 and the right driving arm 120 to adapt to rotors 810 with different outer diameters and meet the tensioning force requirements for the belt 400. When the positioning bolt 760 is rotated and locked, the position of the adjustment block 740 relative to the connecting plate 730 is fixed, that is, the position of the left driving arm 110 and the right driving arm 120 relative to the connecting plate 730 is re-fixed.

[0073] In a preferred embodiment, Figure 2 As shown, an adjustment groove 121 is provided on the right driving arm 120 corresponding to the first right driven pulley 302. The first right driven pulley 302 is connected to the right driving arm 120 by a bearing stop pin and a fastening nut, and the bearing stop pin can slide horizontally in the adjustment groove 121. When the bearing stop pin and the fastening nut are in a loose state, the first right driven pulley 302 can move horizontally to adjust the distance between it and the reference axis surface. When the fastening nut is in a tightened state, the position of the first right driven pulley 302 on the right driving arm 120 will be fixed.

[0074] In an embodiment of the present application, the above-mentioned driving device for a new energy vehicle motor rotor balancing machine is adopted. By adjusting the distance between the first right driven pulley 302 and the reference axis surface, the tension of the belt 400 can be adjusted when the belt 400 fits the rotor 810, so that there is no need to adjust the relative positions of the left driving arm 110, the right driving arm 120 and the slider 720 for a second time, thereby improving the detection efficiency.

[0075] It is understandable that any driven pulley may be configured as an adjustable structure as long as the overall tension of the belt 400 is balanced.

[0076] like Figure 6-Figure 10As shown, the embodiment of the present application provides a supporting mechanism for a new energy vehicle motor rotor balancing machine, including a supporting frame 910, an adjusting frame 940, a positioning frame 920 for supporting a rotor 810, and a connecting rod 950 for connecting the supporting frame 910 and the adjusting frame 940. The supporting frame 910 is provided with a supporting cavity 911 for accommodating the adjusting frame 940. The upper end of the adjusting frame 940 protrudes to the upper side of the supporting frame 910. The adjusting frame 940 is provided with an accommodating cavity 941 with an opening facing upward and for accommodating the positioning frame 920. The positioning frame 920 can slide in the accommodating cavity 941. A connecting rod 930 is provided between the bottom of the positioning frame 920 and the bottom wall of the accommodating cavity 941. By rotating the connecting rod 930, the positioning frame 920 can be driven to move in the accommodating cavity 941 to adjust its height.

[0077] Two first mounting grooves 912 are vertically provided between the inner wall of the support cavity 911 and the outer surface of the support frame 910, and the two first mounting grooves 912 are symmetrical about the positioning frame 920. Two second mounting grooves 943 are vertically provided on the adjustment frame 940 at positions corresponding to the two first mounting grooves 912. The connecting rod 950 is provided with two first mounting grooves 912 and the second mounting groove 943 on the corresponding side, respectively connecting one end of the connecting rod 950 in the first mounting groove 912 through a first hinge 960, and the other end is hinged in the second mounting groove 943 through a second hinge 970.

[0078] When measuring the imbalance of rotor 810, a supporting structure is required to support rotor 810. In the soft supporting structure of the existing scheme, according to Hooke's law: F=k·x (F is elastic force, k is calibration coefficient, x is deformation variable), when the mass of the supported rotor 810 is large or after being used for a long time, the leaf spring undergoes plastic deformation and thus changes the calibration coefficient k. Therefore, after long-term use by the user, as the plastic deformation of the leaf spring increases, the leaf spring coefficient k also increases when the leaf spring type variable x remains unchanged. Although the standard deviation of repeated measurements of the same rotor 810 on each single machine is relatively small, due to the different coefficients k, the measurement results F of the same rotor 810 on two or more soft-support dynamic balancing machines using leaf springs will produce a relatively large deviation, making it impossible for the user to confirm which device's measurement result value is accurate after the same rotor 810 is measured on multiple balancing machines.

[0079] In the embodiment of the present application, the above-mentioned support mechanism for the rotor balancing machine of the motor of a new energy vehicle is adopted, and the support frame 910 and the adjustment frame 940 are respectively hinged at both ends of the connecting rod 950 to realize the connection between the support frame 910 and the adjustment frame 940. Since the leaf spring type support structure will not only bend and deform, but also twist and deform when the leaf spring is working, and the twisting deformation will increase the bending stiffness of the leaf spring, thereby causing the characteristics of the support structure to deviate from the calibration data. When the connecting rod type support structure of this embodiment is working, only rigid body motion (swing of the connecting rod mechanism) occurs, and the characteristics of the support structure strictly conform to the calibration data, that is, the structural characteristics of the machinery (that is, the dynamic friction coefficient) are used to replace the original leaf spring type soft-support dynamic balancing machine. The soft-support dynamic balancing machine is made by using the mechanical characteristics of the material, which solves the problem of inaccurate numerical values ​​of the measurement results caused by the plastic deformation of the leaf spring, so that the measurement data will not be distorted even if the equipment is used for a long time, and the load-bearing weight range of the same soft-support balancing machine is expanded.

[0080] It is understandable that the connection structure between the connecting rod 950, the support frame 910 and the adjustment frame 940 is not limited to the above-mentioned one. For example, the setting direction of the connecting rod 950 can be changed, that is, from a vertical setting to a setting at various angles, as long as the connecting rods 950 on both sides can be symmetrical about the positioning frame 920.

[0081] In a preferred embodiment, one end of the connecting rod 930 is rotatably connected to the adjustment frame 940 and the other end is threadedly connected to the positioning frame 920. When the connecting rod 930 rotates, the positioning frame 920 is restricted by the inner wall of the accommodating cavity 941 and cannot rotate, so that it is driven by the thread to move in the accommodating cavity 941 to adjust the height.

[0082] It can be understood that the connection structure of the connecting rod 930 is not limited to the above-mentioned one, as long as the height adjustment of the positioning frame 920 can be achieved. For example, one end of the connecting rod 930 can be rotatably connected to the positioning frame 920 and the other end can be threadedly connected to the adjustment frame 940. In this case, the height adjustment of the positioning frame 920 can also be achieved.

[0083] In a preferred embodiment, Figure 5-Figure 8 , Fig.10 As shown, two positioning wheels 980 are symmetrically and rotatably provided on the positioning frame 920 about the symmetry axis of the two first mounting grooves 912. The two positioning wheels 980 are located at the top of the positioning frame 920. During use, the two supporting mechanisms are relatively arranged, and the two ends of the rotating shaft 811 of the rotor 810 are respectively placed between the two positioning wheels 980 of the two supporting mechanisms, so that the positioning frame 920 can position and support the rotor 810. When the rotor 810 rotates, the rotating shaft 811 and the two positioning wheels 980 on the corresponding side rotate relatively.

[0084] It is understandable that the diameters of the two positioning wheels 980 on the positioning frame 920 and the distance therebetween are set according to the diameter of the rotating shaft 811 to ensure stable support for the rotor 810. If necessary, the number of positioning wheels 980 can be increased to achieve comprehensive support for the rotating shaft 811.

[0085] In a preferred embodiment, Figure 5-Figure 8 , Fig.10 As shown, a through slot 942 is formed through the adjustment frame 940 and is located at the lower side of the accommodating cavity 941 . The through slot 942 is used to reduce the weight of the adjustment frame 940 .

[0086] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0087] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A driving device for a rotor balancing machine for a new energy vehicle motor, characterized in that: include: Pedestal; Two driving arms are symmetrically arranged on the base and can move synchronously towards and away from each other; A bracket, fixedly arranged on the base; A pulley assembly, used to drive the rotor to rotate; A rotation drive assembly for driving the pulley assembly; The pulley assembly includes a belt, a driving pulley connected to the rotation drive assembly, two first driven pulleys, a second driven pulley, a third driven pulley, a fourth driven pulley, which are symmetrical about the reference axis and are respectively rotatably arranged on two driving arms, and two fifth driven pulleys and a sixth driven pulley which are symmetrical about the reference axis and are rotatably arranged on the bracket; It also includes a guide rail assembly disposed on the base and used to guide the two driving arms, and a clamping driving assembly used to drive the two driving arms to move; The guide rail assembly comprises: A guide rail, fixedly arranged on an end surface of the base close to the driving arm; A slider, symmetrical about the reference axis and slidably arranged on the guide rail; A connecting plate, fixedly arranged on the end surface of the slider away from the guide rail; An adjusting block is fixedly arranged on the end surface of the connecting plate away from the sliding block; At least one travel groove is provided through the adjusting block; A positioning bolt is slidably disposed in the travel groove and is threadedly connected to the connecting plate, and is used to fix the relative position of the adjustment block and the connecting plate; wherein the reference axis plane is a symmetric plane of the two driving arms, the distance between the fifth driven pulley and the reference axis plane is greater than the distance between the fourth driven pulley reference axis plane, the distance between the sixth driven pulley and the reference axis plane is less than the distance between the first driven pulley reference axis plane, and the belt, after winding out from the driving pulley, sequentially bypasses the sixth driven pulley, the first driven pulley, the second driven pulley, the third driven pulley, the fourth driven pulley, the fifth driven pulley on one side of the reference axis plane, and then sequentially bypasses the fifth driven pulley, the fourth driven pulley, the third driven pulley, the second driven pulley, the first driven pulley, the sixth driven pulley on the other side of the reference axis plane, and finally winds back to the driving pulley to form a closed loop, the belt between the third driven pulley and the fourth driven pulley on the corresponding side is parallel to the reference axis plane, and the driving arm is provided with a space for accommodating a rotor between the third driven pulley and the fourth driven pulley; The slide block is connected to the clamping drive assembly, the two drive arms are respectively connected to the two slide blocks, and the sliding direction of the positioning bolt in the travel groove is the moving direction of the drive arm.

2. A driving device for a new energy vehicle motor rotor balancing machine according to claim 1, characterized in that: The clamping drive assembly comprises: A cylinder is fixedly arranged on a base; Two claws are connected to the cylinder and can move synchronously toward or away from each other; Wherein, the two clamping claws are respectively connected to corresponding position adjustment blocks.

3. The driving device for a rotor balancing machine for a new energy vehicle motor according to claim 1, characterized in that: The rotary drive assembly comprises: The motor is fixedly arranged on the base and is dynamically connected to the driving pulley.

4. A driving device for a new energy vehicle motor rotor balancing machine according to claim 3, characterized in that: The rotary drive assembly also includes: The motor frame is fixedly arranged on the end surface of the base away from the driving arm; The mounting plate is fixedly arranged on the motor frame and is fixedly connected to the motor.

5. The driving device for a rotor balancing machine for a new energy vehicle motor according to claim 1, characterized in that: The first driven pulley, the second driven pulley, the third driven pulley, the fourth driven pulley, the fifth driven pulley and the sixth driven pulley are connected to the driving arm by a bearing stop pin and a fastening nut. At least one adjustment groove is provided on the driving arm. The bearing stop pin of one or more of the first driven pulley, the second driven pulley, the third driven pulley and the fourth driven pulley can slide in the adjustment groove.

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