Detection device for frameless motor

Abstract

The embodiment of the utility model relates to the technical field of detection devices, and discloses a detection device for a frameless motor, and the detection device comprises a bottom plate and a first installation seat which is detachably connected to the bottom plate. The fixing seat is detachably connected to the bottom plate; the sleeve is arranged in the fixed seat in a penetrating manner and is used for mounting a stator of the frameless motor; the rotating shaft penetrates through the sleeve, is rotationally connected with the first mounting seat and is used for mounting a rotor of the frameless motor; when the frameless motor is connected with the sleeve and the rotating shaft, the stator and the rotor are in a coupled state, and the rotor is driven by the rotating shaft to rotate synchronously with the rotating shaft. Through the cooperation of the fixed seat, the sleeve and the rotating shaft, the stator and the rotor of the frameless motor can be accurately installed and fixed at specific positions, and the stability of the frameless motor in the detection process is ensured, so that the detection reliability is improved; the real working condition of the frameless motor is simulated, and the connection firmness between the rotor and the rotating shaft and the connection firmness between the stator and the sleeve are tested after fatigue use for a certain time and a certain number of times.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, and in particular to a testing device for frameless motors. Background Technology

[0002] Minimally invasive surgery refers to surgical procedures performed inside the human body using modern medical instruments and equipment such as laparoscopes and thoracoscopes. Compared to traditional surgical methods, minimally invasive surgery has advantages such as less trauma, less pain, and faster recovery. However, the limitations imposed by the incision size on minimally invasive instruments significantly increase the difficulty of the procedure, and the fatigue and tremors experienced by the surgeon during prolonged operations are amplified. These factors have become key constraints on the development of minimally invasive surgical techniques. With the development of robotics technology, a new technology in the field of minimally invasive medicine—minimally invasive surgical robot technology—has emerged, overcoming these shortcomings while inheriting the advantages.

[0003] The robotic arm drive in minimally invasive surgical robots involves frameless motors. Unlike traditional permanent magnet motors, frameless torque motors do not have a housing (also known as a "frame"), and only have two components: a rotor and a stator. Because frameless motors eliminate the housing and bearings, through careful structural design, the stator and rotor are directly fixed to the mechanical equipment, thereby simplifying the structure of the equipment and reducing the overall installation space.

[0004] In the related technology of testing fixtures for frameless motors, the stator sleeve is designed as a hollow ring structure, divided into a fixed end and a clamping end. Parts of the ring sections at the fixed end and clamping end are fixed together, while other ring sections have gaps. The fixed end is a single ring structure with threaded holes on its circumference for fixing the stator sleeve to the support base. The clamping end is an open ring structure with radial grooves at the opening, and screw connections are installed within these grooves. After the motor stator is installed in place, the inner diameter of the open ring is reduced by the screw connections in the radial grooves of the clamping end to clamp the motor stator.

[0005] However, the inventors have discovered at least the following technical problems in the related technology: the stability of the stator sleeve with the frameless motor installed is poor and it cannot effectively simulate the actual working conditions of the frameless motor. Utility Model Content

[0006] One object of this application is to provide a detection device for frameless motors, which at least solves the above-mentioned problems.

[0007] To achieve the above objectives, some embodiments of this application provide a testing device for frameless motors, including a base plate and a first mounting base detachably connected to the base plate; further comprising:

[0008] The mounting base is detachably connected to the base plate.

[0009] A sleeve, inserted into a fixed base, is used to install the stator of a frameless motor;

[0010] A rotating shaft passes through a sleeve and is rotatably connected to the first mounting base for mounting the rotor of a frameless motor.

[0011] When the frameless motor is connected to the sleeve and the shaft, the stator and rotor are in a coupled state, and the rotor is driven by the shaft to rotate synchronously with the shaft.

[0012] Compared with related technologies, the solution provided in this application embodiment can accurately install and fix the stator and rotor of the frameless motor in a specific position through the cooperation of the fixed base, sleeve and rotating shaft. In addition, the stability of the frameless motor during the testing process is ensured by the first mounting base and the base plate, thereby improving the reliability of the test. Furthermore, when the frameless motor is connected to the sleeve and rotating shaft, the stator and rotor are in a coupled state. The rotor is driven by the rotating shaft and rotates synchronously with the rotating shaft. The rotating connection design between the rotating shaft and the first mounting base allows the rotor to rotate freely and transmit torque during dynamic testing, which truly simulates the working conditions of the frameless motor and enhances the reference value of the test data.

[0013] In this embodiment, the stator of the frameless motor is sleeved on the rotor, and the two are coupled together. The rotor is sleeved on the shaft, and the stator is mounted on the sleeve, which in turn passes through the fixed base. When the shaft rotates, the shaft drives the rotor to rotate, while the stator, sleeve, and fixed base remain stationary. This simulates the real working conditions of the frameless motor. After a certain period and a certain number of fatigue uses, the reliability of the connection between the rotor and the shaft, and between the stator and the sleeve, is tested. Attached Figure Description

[0014] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0015] Figure 1 This is a schematic diagram of the structure of the detection device for frameless motors provided in an embodiment of this disclosure;

[0016] Figure 2 This is a cross-sectional schematic diagram of the detection device provided in the embodiments of this disclosure;

[0017] Figure 3 This is a partial cross-sectional schematic diagram of the detection device provided in the embodiments of this disclosure;

[0018] Figure 4 This is a partial explosion diagram of the detection device provided in the embodiments of this disclosure;

[0019] Figure 5This is a partial explosion diagram from another perspective of the detection device provided in the embodiments of this disclosure.

[0020] Figure label:

[0021] 10: Fixed seat; 20: Sleeve; 201: Stop; 202: Mounting platform; 203: Mounting hole; 30: Rotating shaft; 301: Limiting structure; 40: First mounting seat; 401: First limiting platform; 50: Second mounting seat; 501: Second limiting platform; 60: Base plate; 601: First limiting groove; 602: Second limiting groove; 603: Third limiting groove; 70: Bearing; 100: Stator; 200: Rotor. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0024] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0025] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0026] Unless otherwise stated, the term "multiple" means two or more.

[0027] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0028] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0030] Combination Figures 1 to 5 As shown in the figure, an embodiment of this disclosure provides a testing device for a frameless motor, including a base plate 60 and a first mounting base 40 detachably connected to the base plate 60; it also includes a fixing base 10, a sleeve 20 and a rotating shaft 30, and the frameless motor is installed and fixed through the fixing base 10, the sleeve 20 and the rotating shaft 30.

[0031] A fixed base 10 is detachably connected to a base plate 60; a sleeve 20 is inserted into the fixed base 10 for mounting the stator 100 of the frameless motor; a rotating shaft 30 is inserted into the sleeve 20 and rotatably connected to the first mounting base 40 for mounting the rotor 200 of the frameless motor; wherein, when the frameless motor is connected to the sleeve 20 and the rotating shaft 30, the stator 100 and the rotor 200 are in a coupled state, and the rotor 200 is driven by the rotating shaft 30 and rotates synchronously with the rotating shaft 30.

[0032] The testing device for frameless motors provided in this embodiment can precisely install and fix the stator 100 and rotor 200 of the frameless motor in a specific position through the cooperation of the fixing base 10, sleeve 20 and rotating shaft 30. The stability of the frameless motor during the testing process is ensured by the first mounting base 40 and the base plate 60, thereby improving the reliability of the test. In addition, when the frameless motor is connected to the sleeve 20 and rotating shaft 30, the stator 100 and rotor 200 are in a coupled state. The rotor 200 is driven by the rotating shaft 30 and rotates synchronously with the rotating shaft 30. The rotational connection design between the rotating shaft 30 and the first mounting base 40 allows the rotor 200 to rotate freely and transmit torque during dynamic testing, which truly simulates the working conditions of the frameless motor and improves the reference value of the test data.

[0033] In this embodiment, the stator 100 of the frameless motor is sleeved on the rotor 200 and the two are coupled together. The rotor 200 is sleeved on the shaft 30, and the stator 100 is inserted into the sleeve 20, which in turn is inserted into the fixed seat 10. When the shaft 30 rotates, it drives the rotor 200 to rotate, while the stator 100, sleeve 20, and fixed seat 10 remain stationary. This simulates the actual working conditions of the frameless motor. After a certain period and a certain number of fatigue uses, the reliability of the connection between the rotor 200 and the shaft 30, and between the stator 100 and the sleeve 20, is tested. This can be understood as testing the reliability of the connection between the rotor 200 and the shaft 30, and between the stator 100 and the sleeve 20, thereby ensuring the safety of the frameless motor during use.

[0034] Optionally, the connection methods between the sleeve 20 and the stator 100, and between the shaft 30 and the rotor 200, include but are not limited to the following: welding, gluing, snap-fitting, fastener connection, etc.

[0035] This embodiment not only supports and fixes the rotating shaft 30 through the first mounting base 40, but also supports and fixes the sleeve 20 through the fixing base 10. Compared with related technologies, this further improves the stability and reliability of the frameless motor during the testing process.

[0036] The base plate 60 and the first mounting base 40, as well as the fixed base 10 and the base plate 60, are detachably connected, which makes it easy to assemble and disassemble the testing device, facilitating the testing of frameless motors of different sizes and specifications, and enhancing the versatility of the testing device.

[0037] The fixed base 10, sleeve 20, and rotating shaft 30 are all independently designed and connected in a detachable manner. When a component is damaged or needs to be replaced, that component can be replaced individually without replacing the entire testing device, thus reducing maintenance costs.

[0038] In some embodiments, the fixed base 10 and the base plate 60, and the first mounting base 40 and the base plate 60, can be connected by fasteners (such as bolts / screws).

[0039] In some embodiments, the first mounting base 40 and the fixed base 10 are arranged in parallel. For example, the first mounting base 40 and the fixed base 10 may be plate-like structures, and are respectively configured with a first port for mounting the rotating shaft 30 and a second port for mounting the sleeve 20.

[0040] Optionally, the inner annular surface of the sleeve 20 is adhesively connected to the stator 100; and / or, the outer peripheral surface of the shaft 30 is adhesively connected to the rotor 200.

[0041] In this embodiment, the sleeve 20 and the stator 100 are connected by adhesive, and / or the shaft 30 and the rotor 200 are connected by adhesive. When the shaft 30 rotates, it drives the rotor 200 to rotate, while the stator 100, sleeve 20, and mounting base 10 remain stationary. This simulates the actual working conditions of a frameless motor. After a certain period and number of fatigue uses, the reliability of the adhesive connections between the rotor 200 and the shaft 30, and between the stator 100 and the sleeve 20, can be tested to determine if they have loosened, thus ensuring the safety of the frameless motor during use.

[0042] The inner ring surface of the sleeve 20 is glued to the stator 100, and the outer circumferential surface of the shaft 30 is glued to the rotor 200 to simulate the real working conditions of a frameless motor, thereby improving the accuracy of the test structure.

[0043] Optionally, along the radial direction of the sleeve 20, one end of the sleeve 20 extends inward to form a stop portion 201, which is used to stop the stator 100 and abut against the stator 100.

[0044] The stop portion 201, arranged radially along the sleeve 20, provides a clear axial positioning reference for the stator 100, ensuring accurate contact between the stator 100 and the stop portion 201 during installation. This effectively prevents excessive insertion or displacement of the stator 100 within the sleeve 20. During simulated operating condition testing, the stator 100's accurate contact with the stop portion 201 during installation ensures the accuracy of its installation position, preventing a decrease in the assembly precision of the frameless motor due to axial displacement of the stator 100. This improves the reliability of the test results and provides accurate basic data for evaluating the performance of the frameless motor.

[0045] The contact between the stop 201 and the stator 100 forms a mechanical support structure, which enhances the connection rigidity between the sleeve 20 and the stator 100, enabling the stator 100 to better withstand radial and axial forces during the operation of the frameless motor, reducing vibration and shaking caused by external forces, and improving the smoothness and reliability of the frameless motor operation.

[0046] The stop 201 not only prevents the stator 100 from being over-inserted or displaced within the sleeve 20, but also effectively avoids unnecessary interference or collision between the stator 100 and the shaft 30 or other components. In simulating the real-world operation of a frameless robot motor, the motor undergoes various complex movements and stress conditions. The design of the stop 201 ensures the normal operation of the motor components, reducing the risk of detection anomalies or equipment damage caused by component interference. Simultaneously, it prevents the stator 100 from detaching from the sleeve 20 due to axial force during fatigue testing, ensuring the smooth progress of the testing process and the safety of the equipment.

[0047] Furthermore, in this embodiment, the stop 201 is directly constructed at one end of the sleeve 20, eliminating the need for additional limiting components or complex installation structures. This makes the entire detection device more compact and simple, saving installation space and facilitating its layout and use within limited space. Additionally, the integrated design simplifies the installation and limiting process of the stator 100, eliminating the need for additional installation and adjustment of limiting devices. This improves assembly efficiency, reduces assembly difficulty and error rate, and also facilitates maintenance and component replacement of the detection device.

[0048] Optionally, the radius of the circular hole enclosed by the stop portion 201 is greater than or equal to the radius of the outer circumference of the rotor 200.

[0049] This embodiment designs the circular hole formed by the stop portion 201 to have a radius greater than or equal to the radius of the outer circumference of the rotor 200, fully considering the size and movement space of the rotor 200. Under simulated working conditions, the rotor 200 requires a certain degree of freedom and space during rotation. This design ensures that the rotor 200 can rotate freely within the circular hole formed by the stop portion 201, without being restricted or experiencing friction due to an excessively small circular hole. It also avoids loose fit between components caused by an excessively large circular hole, optimizing the internal spatial layout of the detection device, enabling coordinated cooperation between components, and improving the accuracy and stability of the detection.

[0050] Optionally, along the radial direction of the sleeve 20, one end of the sleeve 20 extends outward to form a mounting platform 202, which has a mounting hole 203 for inserting fasteners so that the sleeve 20 can be detachably connected to the fixing seat 10.

[0051] A mounting platform 202 is formed by extending outward from one end of the sleeve 20 along the radial direction of the sleeve 20. Mounting holes 203 are provided on the mounting platform 202 for fasteners, enabling a detachable connection between the sleeve 20 and the fixed seat 10. This not only further enhances the connection stability between the sleeve 20 and the fixed seat 10, ensuring that the sleeve 20 will not loosen or shift during fatigue testing under simulated working conditions, but also retains the convenience of detachment, facilitating quick disassembly and replacement of components when needed, thus improving the maintenance efficiency and flexibility of the testing device.

[0052] The mounting platform 202 ensures a robust mechanical connection between the sleeve 20 and the fixed base 10. During fatigue testing of a frameless robot motor under simulated operating conditions, the design of the mounting platform 202 makes the connection between the sleeve 20 and the fixed base 10 tighter and more stable, enhancing the structural rigidity of the entire testing device. This prevents loosening or detachment between the sleeve 20 and the fixed base 10, effectively resisting complex stress conditions such as vibration and impact. It also reduces motor vibration and swaying caused by unstable connections, maintaining good electromagnetic coupling between the stator 100 and the rotor 200. This ensures the testing device maintains a stable connection even under prolonged, high-frequency fatigue use, improving the reliability and safety of the testing process.

[0053] In some embodiments, the mounting platform 202 is arranged around the sleeve 20 in the circumferential direction, and a plurality of mounting holes 203 are evenly distributed on the mounting platform 202 so that the mounting platform 202 and the fixing seat 10 are subjected to uniform force.

[0054] Optionally, the outer peripheral surface of the shaft 30 is provided with a limiting structure 301 to limit the installation position of the rotor 200.

[0055] In simulating the real-world operation of a frameless robot motor, the installation position accuracy of the rotor 200 directly affects the motor's performance and the accuracy of the test results. The limiting structure 301 in this embodiment ensures that the rotor 200 is accurately positioned during installation, avoiding abnormal motor operation or test data errors caused by installation position deviations, thus improving the reliability of the test and the quality control level of the motor assembly.

[0056] Optionally, the outer peripheral surface of the rotating shaft 30 is stepped to form a limiting structure 301 to limit the rotor 200.

[0057] Optionally, the outer peripheral surface of the rotating shaft 30 is provided with bosses to form a limiting structure 301 to limit the rotor 200. Exemplarily, the bosses are arranged circumferentially around the rotating shaft 30. Alternatively, at least two symmetrical bosses protrude from the outer peripheral surface of the rotating shaft 30, and the line connecting the two bosses is perpendicular to the axis of the rotating shaft 30. In the case of multiple bosses, the plane containing the multiple bosses is perpendicular to the axis of the rotating shaft 30. Alternatively, the multiple bosses are in the form of a raised ring, arranged circumferentially around the rotating shaft 30.

[0058] For example, the limiting structure 301 on the outer circumferential surface of the rotating shaft 30 provides precise axial and radial positioning for the rotor 200, ensuring accurate installation of the rotor 200 during installation. Furthermore, during testing, it effectively prevents axial or radial movement of the rotor 200 on the rotating shaft 30, ensuring that the rotor 200 maintains a stable installation position throughout the entire testing process. This avoids abnormal operation of the frameless motor or inaccurate test data due to installation position deviations or movement during testing. In simulating the real working conditions of a frameless motor in a robot, this precise positioning helps ensure the normal operation of the frameless motor and the reliability of the test results.

[0059] Furthermore, because the limiting structure 301 ensures the accurate installation and stable position of the rotor 200, the vibration and noise generated by the motor during operation are reduced. This not only improves the comfort of the testing environment but also helps extend the service life of the testing device and the motor, reducing maintenance costs.

[0060] In this embodiment, the presence of the limiting structure 301 also prevents the rotor 200 from colliding or rubbing against other components due to improper installation or displacement during operation, thereby preventing component damage and equipment failure. This protective function is particularly important in fatigue testing under simulated operating conditions, ensuring the smooth progress of the testing process and the safe operation of the equipment.

[0061] In addition, during installation, the shaft 30 is directly inserted into the rotor 200 until the limiting structure 301 stops the rotor 200, preventing further insertion. For operators, the intuitive design of the limiting structure 301 reduces the difficulty of installation and disassembly, minimizing the risk of installation errors or equipment damage due to improper operation. Even inexperienced operators can smoothly complete the installation and disassembly of the rotor 200 by following the guidance of the limiting structure 301, improving the ease of use and maintenance of the equipment.

[0062] Optionally, the mounting platform 202 and the stop 201 of the sleeve 20 are located at both ends of the sleeve 20, respectively; wherein the limiting structure 301 of the rotating shaft 30 is arranged on the same side as the mounting platform 202 or the stop 201. This layout design fully considers the relative positional relationships and space utilization efficiency between components, making the overall structure of the testing device more compact and rational. Under simulated working conditions, the components can work collaboratively, reducing stress transmission problems or mutual interference between components caused by unreasonable structural layout, improving the operational stability and reliability of the testing device, and ensuring stable operation of the frameless motor during fatigue testing, resulting in accurate and reliable test data.

[0063] The mounting platform 202 and the stop 201 are respectively positioned at both ends of the sleeve 20, making full use of the axial length of the sleeve 20. This not only makes the axial force on the sleeve 20 more uniform, enhancing the structural stability of the sleeve 20 itself, but also makes the connection between the sleeve 20 and the fixed base 10 and other components more secure. This layout helps to disperse and transmit the forces between the components, enhancing the structural stability of the entire testing device. When simulating the real working conditions of a frameless robot motor, it can effectively resist the vibration and impact generated by the motor operation, ensuring that the testing device maintains stable operation during long-term fatigue testing.

[0064] In some embodiments, the limiting structure 301 of the rotating shaft 30 is arranged on the same side as the mounting platform 202, which can better cooperate with the structure of the mounting platform 202 to form a stable support and limiting system. This ensures that the stator 100 and the rotor 200 will not collide or rub against the sleeve 20 or other components when rotating, thus ensuring the normal operation of the motor and the smooth progress of the testing process. It also further improves the reliability of the connection between the rotating shaft 30 and the sleeve 20, ensuring that the entire device can operate stably during the fatigue test.

[0065] In some embodiments, the limiting structure 301 of the rotating shaft 30 is disposed on the same side as the stop portion 201. The stop portion 201 is located at one end of the sleeve 20 and is used to stop the stator 100 and abut against the stator 100, providing precise axial positioning for the stator 100 and ensuring that the stator 100 is installed in the sleeve 20 with accurate positioning. The limiting structure 301 of the rotating shaft 30 is disposed on the same side as the stop portion 201, further limiting the installation position of the rotor 200, ensuring that the rotor 200 will not slide axially or fall off on the rotating shaft 30, making the installation of the rotor 200 on the rotating shaft 30 more precise. The limiting structure 301 and the stop portion 201 can form a good synergistic effect. The dual positioning design greatly improves the installation accuracy of the frameless motor on the testing device, providing a reliable guarantee for testing under simulated real working conditions. In addition, this same-side layout helps to reduce the swaying and shaking caused by uneven force on the rotating shaft 30 during rotation, improves the rotational accuracy and stability of the rotating shaft 30, thereby ensuring the smooth rotation of the rotor 200 of the frameless motor during the testing process and improving the accuracy and reliability of the test data.

[0066] Optionally, the base plate 60 is provided with a first limiting groove 601, and the fixing seat 10 passes through the first limiting groove 601 and is fixedly connected to the first limiting groove 601.

[0067] Thus, the first limiting groove 601 constructed through the base plate 60 provides a precise installation position and a stable support foundation for the fixed seat 10, ensuring that the fixed seat 10 is firmly installed and accurately positioned on the base plate 60. In simulating the real working conditions of a frameless robot motor, the entire testing device needs to withstand various complex forces and vibrations. The design of the first limiting groove 601 on the base plate 60 effectively prevents the fixed seat 10 from shaking or shifting on the base plate 60, improving the overall stability of the testing device and the relative positional accuracy between components, thereby ensuring the accuracy and reliability of the testing results.

[0068] Optionally, the fixing seat 10 has an L-shaped or T-shaped structure, and the cross arm of the fixing seat 10 is embedded in the first limiting groove 601. Optionally, the fixing seat 10 and the first limiting groove 601 are fixedly connected by fasteners.

[0069] The design of the limiting groove increases the contact area between the fixed seat 10 and the base plate 60, allowing stress to be transferred more evenly between them. In fatigue testing, this uniform stress distribution can effectively reduce the risk of excessive local stress, reduce fatigue damage to components, and extend the service life of the testing device.

[0070] Optionally, the testing device for the frameless motor further includes: a second mounting base 50, which is respectively disposed at both ends of the rotating shaft 30 and rotatably connected to the rotating shaft 30; wherein the second mounting base 50 is detachably connected to the base plate 60.

[0071] In this embodiment, by placing the second mounting base 50 and the first mounting base 40 at both ends of the rotating shaft 30, and rotatably connecting them to the shaft 30, and detachably connecting them to the base plate 60, a more stable support is provided for the rotating shaft 30. This ensures that it maintains good coaxiality and balance during rotation, reducing motor malfunctions and detection errors caused by the shaft 30 shaking or tilting. In particular, when simulating the actual working conditions of a frameless robot motor, the rotating shaft 30 needs to withstand large torque and radial force. The dual support points can effectively reduce the bending and swaying of the rotating shaft 30, ensuring that the shaft 30 remains stable during high-speed rotation or under load, thereby improving the accuracy and reliability of the detection data.

[0072] In addition, by supporting the rotating shaft 30 with two mounting brackets, the load on the rotating shaft 30 is distributed, reducing the load-bearing pressure on the individual bearing 70. This helps to extend the service life of the bearing 70, reduce detection errors or equipment failures caused by premature wear of the bearing 70, and improve the reliability and durability of the detection device.

[0073] In this embodiment, the detachably connected second mounting base 50 and the base plate 60 form a stable fixing structure, and the two mounting bases cooperate with the fixed base 10 to form a stable support frame structure for both ends and the middle of the rotating shaft 30, enhancing the structural rigidity of the entire testing device. Preferably, the distances between the first mounting base 40, the fixed base 10, and the second mounting base 50 are relatively close or equal. During the testing process, this rigid structure can better resist external forces, reduce errors and instabilities caused by structural deformation, and further improve the reliability and durability of the testing device under simulated working conditions.

[0074] Optionally, the second mounting base 50 has the same structure as the first mounting base 40.

[0075] It should be noted that a bearing 70 is provided between the rotating shaft 30 and the first mounting base 40 to allow the rotating shaft 30 to rotate relative to the first mounting base 40; similarly, a bearing 70 is provided between the rotating shaft 30 and the second mounting base 50 to allow the rotating shaft 30 to rotate relative to the second mounting base 50.

[0076] Optionally, the base plate 60 is provided with a second limiting groove 602, and the first mounting seat 40 passes through the second limiting groove 602 and is fixedly connected to the second limiting groove 602; and / or, the base plate 60 is provided with a third limiting groove 603, and the second mounting seat 50 passes through the third limiting groove 603 and is fixedly connected to the third limiting groove 603.

[0077] The second limiting groove 602 and the third limiting groove 603 constructed on the base plate 60 provide precise installation positions for the first mounting base 40 and the second mounting base 50, respectively. This design ensures that the mounting bases are accurately positioned on the base plate 60, avoiding tilting of the rotating shaft 30 or abnormal motor operation caused by positional deviations, thereby improving the assembly accuracy of the entire testing device. Furthermore, it enables rapid installation, improving assembly efficiency.

[0078] In this embodiment, each mounting base is inserted into and fixedly connected to a corresponding limiting groove. This structure effectively prevents the mounting base from shaking or shifting on the base plate 60. Even under the real working conditions of a frameless robot motor, facing long-term fatigue testing and various complex stress conditions, the mounting base can still remain stable, ensuring the normal operation of the rotating shaft 30.

[0079] Optionally, a portion of the first mounting base 40 is fitted into the second limiting groove 602. Optionally, a portion of the second mounting base 50 is fitted into the third limiting groove 603.

[0080] In some embodiments, the bottom of the first mounting base 40 is bent into an L-shape, and a first limiting platform 401 is constructed at the bottom of the cross arm of the L-shape, which is embedded in the second limiting groove 602. In this way, the first mounting base 40, through the first limiting platform 401 embedded in the second limiting groove 602, not only achieves rapid positioning and installation but also increases the contact area between the first mounting base 40 and the base plate 60. This allows stress to be transmitted more evenly between the two. In fatigue testing, this uniform stress distribution can effectively reduce the risk of excessive local stress, reduce fatigue damage to components, and extend the service life of the testing device. Especially noteworthy is that the bending direction of the L-shaped cross arm is opposite to that of the fixed base 10.

[0081] Similarly, in some embodiments, the bottom of the second mounting base 50 is bent into an L-shape, and a second limiting platform 501 is constructed at the bottom of the cross arm of the L-shape. The second limiting platform 501 is embedded in the third limiting groove 603. In this way, the second mounting base 50, through the second limiting platform 501 embedded in the third limiting groove 603, not only achieves rapid positioning and installation, but also increases the contact area between the second mounting base 50 and the base plate 60. This allows stress to be transmitted more evenly between the two. In fatigue testing, this uniform stress distribution can effectively reduce the risk of excessive local stress, reduce fatigue damage to components, and extend the service life of the testing device. In particular, the bending direction of the L-shaped cross arm is opposite to that of the fixed base 10.

[0082] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims, and the foregoing embodiments should be considered exemplary and non-limiting.

Claims

1. A detection device for frameless motor, comprising a base plate and a first mounting seat detachably connected to the base plate; characterized in that, Also comprising: a fixing base, detachably connected to the bottom plate; a sleeve, arranged in the fixing base, for mounting a stator of the frameless motor; a rotating shaft, arranged in the sleeve and rotationally connected to the first mounting base, for mounting a rotor of the frameless motor; wherein when the frameless motor is connected to the sleeve and the rotating shaft, the stator and the rotor are in a coupled state, and the rotor is driven by the rotating shaft to rotate synchronously with the rotating shaft.

2. The detection device according to claim 1, wherein the inner annular surface of the sleeve is adhesively connected to the stator; and / or the outer peripheral surface of the rotating shaft is adhesively connected to the rotor.

3. The detection device according to claim 1, wherein along the radial direction of the sleeve, one end of the sleeve extends inwardly to form a stop portion for stopping the stator and abutting against the stator.

4. The detection device according to claim 3, wherein the radius of the circular hole defined by the stop portion is greater than or equal to the radius of the outer periphery of the rotor.

5. The detection device according to claim 3, wherein along the radial direction of the sleeve, one end of the sleeve extends outwardly to form a mounting table, and the mounting table is configured with a mounting hole for passing through a fastener to detachably connect the sleeve to the fixing base.

6. The detection device according to any one of claims 1 to 5, wherein the outer peripheral surface of the rotating shaft is configured with a limiting structure for limiting the mounting position of the rotor.

7. The detection device of claim 6, wherein, the mounting table and the stop portion of the sleeve are respectively located at two ends of the sleeve; wherein the limiting structure of the rotating shaft is arranged on the same side as the mounting table or the stop portion.

8. The detection device according to claim 1, wherein the bottom plate is configured with a first limiting groove, and the fixing base is arranged in the first limiting groove and fixedly connected to the first limiting groove.

9. The detection device of claim 1, wherein, Also comprising: a second mounting base, arranged at two ends of the rotating shaft respectively and rotationally connected to the rotating shaft; wherein the second mounting base is detachably connected to the bottom plate.

10. The detection device according to claim 9, wherein the bottom plate is configured with a second limiting groove, and the first mounting base is arranged in the second limiting groove and fixedly connected to the second limiting groove; and / or the bottom plate is configured with a third limiting groove, and the second mounting base is arranged in the third limiting groove and fixedly connected to the third limiting groove.

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