Magnetic isolation device and linear transmission system

Abstract

The utility model discloses a magnetism isolating device and a linear transmission system, and relates to the technical field of conveying devices.The linear transmission system comprises a motor stator assembly, a motor rotor assembly, a sensor rotor assembly and a detection device, and the detection device comprises a plurality of detection chips; the magnetic isolation device is configured to be located between the motor stator assembly and the detection chip, the sensor rotor assembly and the detection chip are located on one side of the magnetic isolation device, and the motor stator assembly is located on the other side of the magnetic isolation device. According to the technical scheme provided by the utility model, the position detection precision can be improved.

Description

Technical Field

[0001] This utility model relates to the field of conveying device technology, and in particular to a magnetic shielding device and a linear transmission system. Background Technology

[0002] Position detection in linear transmission systems typically uses magnetic sensors. A magnetic sensor mainly consists of a magnetic field generating device and a sensor detection device. The magnetic field generating device is generally the sensor's moving magnet and its structural components, while the sensor detection device includes a detection chip and a signal processing circuit. The detection chip outputs different signals under different magnetic fields. During the movement of the moving element, the magnetic field generated by the sensor's moving magnet acts on different detection chips. Because different detection chips experience different magnetic field effects, the position information of the sensor's moving magnet can be obtained by processing the different output signals of the detection chips, and thus the position of the moving parts of the linear transmission system can be calculated.

[0003] In related technologies, linear transmission systems using magnetic sensors for position detection rely on the interaction between the magnetic field generated by the current-excited stator assembly of a motor and the magnetic field of the moving part's magnet. However, the magnetic field generated by the current-excited stator assembly is generally irregular, and therefore its influence on the magnetic field of the sensor's moving magnet is also irregular. Since the magnetic sensor chip is sensitive to changes in the magnetic field, irregular magnetic fields cause irregularities in the chip's output signal, leading to significant position calculation deviations and affecting the position detection accuracy of the linear transmission system. Utility Model Content

[0004] The main purpose of this invention is to propose a magnetic shielding device and a linear transmission system, which aims to improve the accuracy of position detection.

[0005] To achieve the above objectives, this utility model proposes a magnetic isolation device applied to a linear transmission system. The linear transmission system includes a motor stator assembly, a motor mover assembly, a sensor mover assembly, and a detection device. The detection device includes multiple detection chips. The magnetic isolation device is configured to be located between the motor stator assembly and the detection chips. The sensor mover assembly and the detection chips are located on one side of the magnetic isolation device, and the motor stator assembly is located on the other side of the magnetic isolation device.

[0006] In one embodiment, the magnetic shielding device is a magnetic shielding plate.

[0007] In one embodiment, the magnetic shielding plate includes:

[0008] The connecting part is used to connect to the stator base of the linear transmission system;

[0009] A magnetic isolation part is connected to the connecting part, the sensor rotor assembly and the detection chip are located on one side of the magnetic isolation part, and the motor stator assembly is located on the other side of the magnetic isolation part.

[0010] In an embodiment, the connecting part and the magnetic isolation part are integrally formed.

[0011] In an embodiment, the linear transmission system further comprises a stator base provided with a support for supporting the detection device; the connecting part comprises a plurality of connecting sections distributed along the length direction of the magnetic isolation part, a first avoiding opening is formed between two adjacent connecting sections, and a second avoiding opening is formed on the side edge of the connecting section away from the magnetic isolation part, the first avoiding opening and the second avoiding opening are used for avoiding the support.

[0012] In an embodiment, the magnetic isolation device is grounded through the stator base of the linear transmission system.

[0013] To achieve the above object, the utility model further provides a linear transmission system, which comprises:

[0014] A stator base;

[0015] A motor stator assembly is arranged in the stator base.

[0016] A motor rotor assembly is arranged in the stator base.

[0017] A sensor rotor assembly is connected to the motor rotor assembly.

[0018] A detection device is arranged in the stator base and comprises a calculation circuit assembly and a plurality of detection chips electrically connected to the calculation circuit assembly, the plurality of detection chips are arrayed along the moving direction of the sensor rotor assembly, and the detection chips are configured to detect the magnetic field of the sensor rotor assembly.

[0019] The magnetic isolation device is arranged in the stator base, the sensor rotor assembly and the detection chip are located on one side of the magnetic isolation device, and the motor stator assembly is located on the other side of the magnetic isolation device.

[0020] In an embodiment, the sensor rotor assembly comprises:

[0021] A sensor rotor base is connected to the motor rotor assembly and is provided with a mounting groove.

[0022] A sensor rotor magnetic steel is arranged in the mounting groove.

[0023] A sensor rotor cover is arranged on the slot of the mounting groove.

[0024] In an embodiment, the sensor rotor assembly is located above the magnetic isolation device and on one side of the detection chip.

[0025] The sensor rotor base is provided with a connecting lug on the side away from the detection chip, and the connecting lug is connected to the motor rotor assembly.

[0026] In an embodiment, the sensor rotor assembly and the detection chip are located above the magnetic isolation device, and the motor stator assembly is located below the magnetic isolation device.

[0027] The projections of the detection chip and the sensor rotor assembly in the vertical direction fall on the magnetic isolation device.

[0028] In an embodiment, the motor rotor assembly comprises:

[0029] A moving component having a first mounting side and a second mounting side arranged opposite to each other;

[0030] A first motor back iron and a second motor back iron are respectively arranged on the first mounting side and the second mounting side and located below the magnetic isolation device.

[0031] A first motor magnetic steel and a second motor magnetic steel are respectively arranged on the first motor back iron and the second motor back iron and located below the magnetic isolation device; the motor stator assembly is located between the first motor magnetic steel and the second motor magnetic steel; the magnetic fields generated by the first motor magnetic steel and the second motor magnetic steel interact with the magnetic field generated by the motor stator assembly to drive the movement of the motor rotor assembly.

[0032] The first motor back iron has an extension part extending towards the side of the magnetic isolation device close to the motor stator assembly to coincide with the magnetic isolation device in the vertical direction.

[0033] The technical scheme of the utility model sets the magnetic isolation device between the motor stator assembly and the detection chip of the linear transmission system, so that the sensor rotor assembly and the detection chip are located on one side of the magnetic isolation device, and the motor stator assembly is located on the other side of the magnetic isolation device. The irregular magnetic field generated by the motor stator assembly under the action of current excitation can be effectively isolated by the magnetic isolation device, so as to reduce the influence of the irregular magnetic field generated by the motor stator assembly under the action of current excitation on the detection chip, thereby improving the position detection accuracy of the linear transmission system. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only constitute some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0035] Figure 1 The structure diagram of an embodiment of the magnetic isolation device provided by the present application is shown in the figure.

[0036] Figure 2 The structure diagram of an embodiment of the linear transmission system provided by the present application is shown in the figure.

[0037] Figure 3 The side view of an embodiment of the linear transmission system provided by the present application is shown in the figure.

[0038] Figure 4 The exploded view of the sensor rotor assembly in an embodiment of the linear transmission system provided by the present application is shown in the figure.

[0039] Explanation of reference numerals:

[0040] Reference numerals Names Reference numerals Names 100 Linear transmission system 432 Second connecting section 10 Magnetic isolation device 433 Support section 11 Connecting portion 44 Second motor back iron 111 Connecting section 45 Second motor magnetic steel 111a First avoiding opening 50 Sensor mover assembly 111b Second avoiding opening 51 Sensor mover base 12 Magnetic isolation portion 511 Mounting groove 20 Stator base 512 Connecting lug 30 Motor stator assembly 52 Sensor mover magnetic steel 40 Motor mover assembly 53 Sensor mover cover plate 41 First motor magnetic steel 60 Detection device 42 First motor back iron 61 Solving circuit assembly 421 Extension portion 62 Detection chip 43 Moving part 70 Driving circuit assembly 431 First connecting section

[0041] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0043] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.

[0044] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0045] The linear transmission system position detection generally uses a magnetic sensor, which mainly includes a magnetic field generating device and a sensor detection device. The magnetic field generating device is generally a sensor rotor magnetic steel and its structural member, and the sensor detection device includes a detection chip and a signal solving circuit. The output signal of the detection chip under the action of different magnetic fields has difference. The magnetic field generated by the sensor rotor magnetic steel during the movement of the rotor will act on different detection chips. Because the magnetic field acting on different detection chips is different, the position information of the sensor rotor magnetic steel can be obtained by solving the different output signals of the detection chip, and the position of the moving part of the linear transmission system can be solved.

[0046] In the related art, the linear transmission system using the magnetic sensor for position detection, the power comes from the interaction between the magnetic field generated by the current excited motor stator assembly and the motor magnetic steel magnetic field of the moving part. The magnetic field generated by the current excited motor stator assembly is generally irregular, so the influence of the sensor rotor magnetic steel magnetic field is also irregular. Because the detection chip of the magnetic sensor is sensitive to the change of the magnetic field, the irregular magnetic field will make the output signal of the detection chip irregular, so as to cause large deviation of the solved position, and affect the position detection accuracy of the linear transmission system.

[0047] Based on this, the utility model provides a kind of magnetic isolation device 10, to improve position detection accuracy.

[0048] Please refer to Figures 1 to 3In an embodiment of the utility model, this magnetic isolation device 10 is applied to linear transmission system 100, linear transmission system 100 includes motor stator assembly 30, motor dynamic component 40, sensor dynamic component 50 and detection device 60, and detection device 60 includes multiple detection chips 62.Magnetic isolation device 10 is configured to be located between motor stator assembly 30 and detection chip 62, to make sensor dynamic component 50 and detection chip 62 be located on one side of magnetic isolation device 10, and motor stator assembly 30 is located on the other side of magnetic isolation device 10.

[0049] The technical scheme of the utility model sets up magnetic isolation device 10 between motor stator assembly 30 and detection chip 62 of linear transmission system 100, to make sensor dynamic component 50 and detection chip 62 be located on one side of magnetic isolation device 10, and motor stator assembly 30 is located on the other side of magnetic isolation device 10.Irregular magnetic field generated under the current excitation of motor stator assembly 30 can be effectively isolated by magnetic isolation device 10, to reduce the influence of irregular magnetic field generated under the current excitation of motor stator assembly 30 on detection chip 62, to improve the position detection precision of linear transmission system 100.

[0050] It should be noted that magnetic isolation device 10 can be specifically 10# steel, SPCC (mainly consists of three parts, the first part indicates material, such as: S (Steel) indicates steel, F (Ferrum) indicates iron;The second part indicates different shapes, kinds, purposes, such as P (Plate) indicates plate, T (Tube) indicates tube, K (Kogu) indicates tool;The third part indicates characteristic number, generally for the lowest tensile strength. Such as: SS400——the first S indicates steel (Steel), the second S indicates "structure" (Structure), 400 is the lower limit tensile strength 400MPa, the whole indicates that the ordinary structural steel of tensile strength is 400MPa), and other magnetically conductive materials. One form of magnetic field isolation of the magnetically conductive material is to absorb interference magnetic field, to reduce the influence of irregular magnetic field generated under the current excitation of motor stator assembly 30 on detection chip 62 and sensor dynamic component 50.

[0051] In actual application, magnetic isolation device 10 can be plate-shaped, block-shaped, strip-shaped structural members, as long as it can reduce the influence of irregular magnetic field generated under the current excitation of motor stator assembly 30 on detection chip 62.

[0052] Please refer to Figures 1 to 3 In an embodiment of the utility model, magnetic isolation device 10 can be designed as a magnetic isolation plate, and the plate-shaped magnetic isolation device 10 can effectively isolate irregular magnetic field generated under the current excitation of motor stator assembly 30.

[0053] Optionally, please refer to Figure 1 ,Figure 2 The magnetic isolation plate can include a connecting portion 11 and a magnetic isolation portion 12; the connecting portion 11 is used for connecting the stator base 20 of the linear transmission system 100; the magnetic isolation portion 12 is connected to the connecting portion 11, the sensor rotor assembly 50 and the detection chip 62 are located on one side of the magnetic isolation portion 12, and the motor stator assembly 30 is located on the other side of the magnetic isolation portion 12.

[0054] In this way, the magnetic isolation plate can be fixedly connected to the stator base 20 of the linear transmission system 100 through the connecting portion 11, so as to realize reliable installation of the magnetic isolation plate, and the irregular magnetic field generated by the motor stator assembly 30 under the action of current excitation can be effectively isolated through the magnetic isolation portion 12.

[0055] Optionally, referring to Figure 1 The connecting portion 11 and the magnetic isolation portion 12 are in an integrated structure; in this way, the integrated structure design can not only ensure the connection strength between the connecting portion 11 and the magnetic isolation portion 12, but also simplify the preparation process.

[0056] Optionally, referring to Figure 1 The linear transmission system 100 further includes a stator base 20, and the stator base 20 is provided with a support for supporting the detection device 60; the connecting portion 11 includes a plurality of connecting segments 111 which are spaced apart along the length direction of the magnetic isolation portion 12, a first avoiding opening 111a is formed between two adjacent connecting segments 111, and a second avoiding opening 111b is arranged on the side edge of the connecting segment 11 away from the magnetic isolation portion 12; and the first avoiding opening 111a and the second avoiding opening 111b are both used for avoiding the support.

[0057] In this way, in order to ensure the installation reliability of the detection device 60, the support for supporting the detection device 60 is usually arranged on the stator base 20, so that when the magnetic isolation device 10 is additionally arranged, the first avoiding opening 111a and the second avoiding opening 111b can avoid the support, and the magnetic isolation device 10 can be additionally arranged without changing the original structure, so as to reduce the design cost.

[0058] Referring to Figure 2 In an embodiment of the utility model, the magnetic isolation device 10 is grounded through the stator base 20 of the linear transmission system 100.

[0059] In this way, since the magnetic isolation device 10 will generate eddy current under the action of the magnetic field generated by the motor magnetic steel 41 of the linear transmission system 100 and the magnetic field generated by the motor stator assembly 30, the eddy current will generate magnetic field and affect the detection chip 62, so that the effective grounding of the magnetic isolation device 10 can avoid the influence of the eddy current of the magnetic isolation device 10.

[0060] In an embodiment, the magnetic isolation device 10 can be installed on the stator base 20 by screws or other connecting structures, so that the magnetic isolation device 10 is grounded through the screws and the stator base 20 in sequence.

[0061] Please refer to Figure 2 、 Figure 3 The utility model also provides a linear transmission system 100, this linear transmission system 100 includes stator base 20, motor stator assembly 30, motor rotor assembly 40, sensor rotor assembly 50, detection device 60 and magnetic isolation device 10, the specific structure of magnetic isolation device 10 refers to the above-mentioned embodiment, because the linear transmission system 100 of the utility model adopts all the technical schemes of the above-mentioned embodiment, therefore at least has all the beneficial effects brought by the technical scheme of the above-mentioned embodiment, here will not repeat.

[0062] Among them, motor stator assembly 30 is arranged on stator base 20;The magnetic field generated by motor rotor assembly 40 and the magnetic field generated by motor stator assembly 30 interact to push motor rotor assembly 40 to move;Sensor rotor assembly 50 is connected to motor rotor assembly 40 to move with motor rotor assembly 40;Detection device 60 is arranged on stator base 20 and includes solving circuit component 61, multiple detection chips 62 electrically connected to solving circuit component 61, multiple detection chips 62 are arrayed along the moving direction of sensor rotor assembly 50, and detection chip 62 is configured to detect the magnetic field of sensor rotor assembly 50;Magnetic isolation device 10 is arranged on stator base 20, sensor rotor assembly 50 and detection chip 62 are located on one side of magnetic isolation device 10, and motor stator assembly 30 is located on the other side of magnetic isolation device 10.

[0063] It can be understood that the power of linear transmission system 100 comes from the interaction of the magnetic field generated by motor stator assembly 30 under the current excitation and the magnetic field generated by motor rotor assembly 40 to push motor rotor assembly 40 to move, and the load is connected to motor rotor assembly 40 to make motor rotor assembly 40 drive the load to move. In addition, sensor rotor assembly 50 is connected to motor rotor assembly 40 to move with motor rotor assembly 40, and the magnetic field generated by sensor rotor assembly 50 acts on different detection chips 62 during the movement of motor rotor assembly 40, because the different detection chips 62 are subjected to different magnetic field actions, the position information of sensor rotor assembly 50 can be obtained by solving the differential output signals of detection chip 62 by solving circuit component 61, and then the position of the load can be solved.

[0064] In addition, the detection chip 62 and the sensor mover assembly 50 are located on the same side of the magnetic isolation device 10, the magnetic field generated by the sensor mover magnetic steel 52 in the sensor mover assembly 50 can act on the detection chip 62, and the magnetic isolation device 10 does not affect the normal work of the sensor mover assembly 50. At the same time, the part of the magnetic isolation device 10 between the detection chip 62 and the sensor mover assembly 50 is basically the same, so that the influence of the magnetic isolation device 10 on the magnetic field generated by the sensor mover magnetic steel 52 is basically unchanged, so that the output signal of the detection chip 62 is basically unchanged, and the influence of this part can be compensated by the position of the sensor mover assembly 50.

[0065] In the embodiment, an air gap is arranged between the sensor mover assembly 50 and the magnetic isolation device 10, to avoid mutual interference between the moving sensor mover assembly 50 and the fixed magnetic isolation device 10. In addition, an air gap is arranged between the magnetic isolation device 10 and the motor mover assembly 40, to avoid mutual interference between the moving motor mover assembly 40 and the fixed magnetic isolation device 10.

[0066] Please refer to Figure 4 In an embodiment of the utility model, the sensor mover assembly 50 includes a sensor mover base 51, a sensor mover magnetic steel 52 and a sensor mover cover plate 53; the sensor mover base 51 is connected to the motor mover assembly 40, and the sensor mover base 51 is provided with a mounting groove 511; the sensor mover magnetic steel 52 is arranged in the mounting groove 511; and the sensor mover cover plate 53 is arranged on the slot opening of the mounting groove 511.

[0067] In this way, the sensor mover magnetic steel 52 is installed in the mounting groove 511 of the sensor mover base 51, and the sensor mover cover plate 53 is arranged on the slot opening of the mounting groove 511 to cover the sensor mover magnetic steel 52, thereby protecting the sensor mover magnetic steel 52.

[0068] In an embodiment, a screw can be used to connect the sensor mover cover plate 53 and the sensor mover base 51.

[0069] Please refer to Figure 3 、 Figure 4 In an embodiment of the utility model, the sensor mover assembly 50 is located above the magnetic isolation device 10 and on one side of the detection chip 62; the side of the sensor mover base 51 away from the detection chip 62 is provided with a connecting lug 512, and the connecting lug 512 is connected to the motor mover assembly 40.

[0070] In this way, by connecting the sensor mover assembly 50 to the motor mover assembly 40 through the connecting lug 512, the sensor mover assembly 50 can be more stably arranged above the magnetic isolation device 10, so that the irregular magnetic field generated by the motor stator assembly 30 under the action of current excitation can be effectively isolated by the magnetic isolation device 10, thereby reducing the influence of the irregular magnetic field generated by the motor stator assembly 30 under the action of current excitation on the sensor mover assembly 50, and the position detection accuracy of the linear transmission system 100 is improved.

[0071] Referring to Figure 3 In an embodiment of the present application, the sensor mover assembly 50 and the detection chip 62 are arranged above the magnetic isolation device 10, and the motor stator assembly 30 is arranged below the magnetic isolation device 10; the projections of the detection chip 62 and the sensor mover assembly 50 in the vertical direction all fall on the magnetic isolation device 10.

[0072] In this way, the magnetic isolation device 10 can completely cover the lower part of the detection chip 62 and the sensor mover assembly 50, and can fully isolate the irregular magnetic field generated by the motor stator assembly 30 under the action of current excitation.

[0073] Referring to Figure 2 , Figure 3 In an embodiment of the present application, the motor mover assembly 40 comprises a moving part 43, a motor first back iron 42, a motor second back iron 44, a first motor magnetic steel 41 and a second motor magnetic steel 45; the moving part 43 has oppositely arranged first and second mounting sides; the motor first back iron 42 and the motor second back iron 44 are respectively mounted on the first and second mounting sides and are arranged below the magnetic isolation device 10; the first motor magnetic steel 41 and the second motor magnetic steel 45 are respectively mounted on the motor first back iron 42 and the motor second back iron 44 and are arranged below the magnetic isolation device 10; the motor stator assembly 30 is arranged between the first motor magnetic steel 41 and the second motor magnetic steel 45; the magnetic fields generated by the first motor magnetic steel 41 and the second motor magnetic steel 45 interact with the magnetic field generated by the motor stator assembly 30 to drive the motor mover assembly 40 to move;

[0074] The motor first back iron 42 has an extension part 421 extending towards the side of the magnetic isolation device 10 close to the motor stator assembly 30, so as to be vertically coincident with the magnetic isolation device 10.

[0075] In this way, the motor first back iron 42, the motor second back iron 44, the first motor magnetic steel 41 and the second motor magnetic steel 45 are all located below the magnetic isolation device 10, and the extension part 421 of the motor first back iron 42 is vertically overlapped with the magnetic isolation device 10. When the linear transmission system 100 is working, the motor stator assembly 30 generates a magnetic field under the action of current excitation, part of the magnetic field provides power for the motor rotor assembly 40 through the interaction with the magnetic field of the first motor magnetic steel 41 and the second motor magnetic steel 45, and the other part of the magnetic field acts on the motor first back iron 42 and the surrounding space. The irregular magnetic field in the surrounding space can be isolated by the magnetic isolation device 10 to reduce the influence of the irregular magnetic field on the detection chip 62 and the sensor rotor assembly 50. The irregular magnetic field acting on the motor first back iron 42 leaks outward through the end of the motor first back iron 42. Since the extension part 421 of the motor first back iron 42 extends towards the side of the magnetic isolation device 10 close to the motor stator assembly 30 to form an overlapping area D (see Figure 3 with the magnetic isolation device 10, thereby reducing the influence of the irregular magnetic field on the detection chip 62 and the sensor rotor assembly 50.

[0076] Please refer to Figure 3 In an embodiment of the present application, the moving part 43 comprises a first connecting section 431, a second connecting section 432 and a supporting section 433. The first connecting section 431 and the second connecting section 432 are oppositely arranged. The side of the first connecting section 431 close to the second connecting section 432 is a first mounting side, and the side of the second connecting section 432 close to the first connecting section 431 is a second mounting side. The sensor rotor assembly 50 is mounted on the side of the first connecting section 431 away from the motor first back iron 42. The two ends of the supporting section 433 are connected to the first connecting section 431 and the second connecting section 432 respectively.

[0077] In this way, the moving part 43 composed of the first connecting section 431, the second connecting section 432 and the supporting section 433 is in the shape of an I-beam, so as to connect the motor first back iron 42 to the first mounting side of the first connecting section 431, so that the first motor magnetic steel 41 and the motor first back iron 42 are located on one side of the motor stator assembly 30, and the motor second back iron 44 is connected to the second connecting section 432, so that the motor second back iron 44 is located on the other side of the motor stator assembly 30.

[0078] Please refer to Figure 2 In an embodiment of the present application, the stator base 20 is further provided with a driving circuit assembly 70, which is configured to control the power supply of the motor stator assembly 30.

[0079] In this way, the energization of the motor stator assembly 30 can be controlled by the drive circuit to cause the motor stator assembly 30 to generate a magnetic field under current excitation.

[0080] The above merely illustrates the embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structural transformation, or direct / indirect application in other related technical fields, made under the technical concept of the present application, using the content of the present application specification and drawings, is included in the patent protection scope of the present application.

Claims

1. A magnetic isolation device applied to a linear transmission system, the linear transmission system comprising a motor stator assembly, a motor mover assembly, a sensor mover assembly, and a detection device, the detection device comprising a plurality of detection chips, characterized in that, The magnetic isolation device is arranged between the motor stator assembly and the detection chip, the sensor rotor assembly and the detection chip are arranged on one side of the magnetic isolation device, and the motor stator assembly is arranged on the other side of the magnetic isolation device.

2. The magnetic isolation device of claim 1, wherein, The magnetic isolation device is a magnetic isolation plate.

3. The magnetic isolation device of claim 2, wherein the magnetic field source is a permanent magnet. The magnetic isolation plate comprises: a connecting portion for connecting a stator base of the linear transmission system; a magnetic isolation portion connected to the connecting portion, the sensor rotor assembly and the detection chip being arranged on one side of the magnetic isolation portion, and the motor stator assembly being arranged on the other side of the magnetic isolation portion.

4. The magnetic isolation device of claim 3, wherein the magnetic field source is a permanent magnet. The connecting portion and the magnetic isolation portion are integrally formed. The linear transmission system further comprises a stator base provided with a support for supporting the detection device; the connecting portion comprises a plurality of connecting segments spaced apart along the length direction of the magnetic isolation portion, a first avoiding opening being formed between adjacent two connecting segments, and a second avoiding opening being provided on the side edge of the connecting segment away from the magnetic isolation portion, the first avoiding opening and the second avoiding opening being used for avoiding the support.

5. The magnetic isolation device of any one of claims 1 to 4, wherein, The magnetic isolation device is grounded through the stator base of the linear transmission system.

6. A linear transmission system, characterized by Comprise: a stator base; a motor stator assembly arranged on the stator base; a motor rotor assembly, a magnetic field generated by the motor rotor assembly interacting with a magnetic field generated by the motor stator assembly to push the motor rotor assembly to move; a sensor rotor assembly connected to the motor rotor assembly; a detection device arranged on the stator base and comprising a calculation circuit assembly, a plurality of detection chips electrically connected to the calculation circuit assembly, the plurality of detection chips being arrayed along the moving direction of the sensor rotor assembly, the detection chips being configured to detect the magnetic field of the sensor rotor assembly; The magnetic isolation device according to any one of claims 1 to 5 is arranged on the stator base, the sensor rotor assembly and the detection chip being arranged on one side of the magnetic isolation device, and the motor stator assembly being arranged on the other side of the magnetic isolation device.

7. The linear transport system of claim 6, wherein, The sensor rotor assembly comprises: a sensor rotor base connected to the motor rotor assembly, the sensor rotor base being provided with a mounting groove; a sensor rotor magnet arranged in the mounting groove; a sensor rotor cover plate covering the groove opening of the mounting groove.

8. The linear transport system of claim 7, wherein, The sensor rotor assembly is located above the magnetic isolation device and on one side of the detection chip; The side of the sensor rotor base away from the detection chip is provided with a connecting lug connected to the motor rotor assembly.

9. The linear transport system of claim 6, wherein, The sensor rotor assembly and the detection chip are located above the magnetic isolation device, and the motor stator assembly is located below the magnetic isolation device; The projections of the detection chip and the sensor rotor assembly in the vertical direction all fall on the magnetic isolation device.

10. The linear transport system of claim 6, wherein, The motor rotor assembly comprises: a moving component having oppositely arranged first and second mounting sides; a motor first back iron and a motor second back iron respectively mounted on the first and second mounting sides and located below the magnetic isolation device; A first motor magnetic steel and a second motor magnetic steel are respectively installed on the motor first back iron and the motor second back iron and are located below the magnetic isolation device; the motor stator assembly is located between the first motor magnetic steel and the second motor magnetic steel; the magnetic fields generated by the first motor magnetic steel and the second motor magnetic steel interact with the magnetic field generated by the motor stator assembly to drive the motor mover assembly to move; The motor first back iron has an extension part, which extends towards the side of the magnetic isolation device close to the motor stator assembly to coincide with the magnetic isolation device in the vertical direction.

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