Slip ring and electronic computed tomography equipment

Abstract

The utility model belongs to the field of electric transmission, and provides a slip ring and an electronic computed tomography device, a first coil is installed on a stator, the first coil comprises coil units distributed in the circumferential direction of the stator, and at least part of the coil units are connected to an external transmission circuit in parallel; the rotor and the stator are correspondingly arranged, and the second coil is installed on the rotor and is coupled with the first coil; any one of the first coil and the second coil is a transmitting coil, and the other one is a receiving coil. At least part of coil units of the first coil are connected to the external transmission circuit in parallel, so that the part of coil units can transmit power or signals in parallel, and when any part of coil units in the part fail and cannot transmit power or signals normally, the rest of coil units can continue to transmit power or signals. Normal operation of the slip ring is maintained, and stability and reliability of operation of mechanical equipment are improved.

Description

Technical Field

[0001] The present application belongs to the technical field of electrical transmission, and more specifically, to a slip ring and an electronic computer tomography device. Background Art

[0002] When a mechanical device rotates 360 degrees, a slip ring is needed to transmit power or signals to avoid the entanglement problem caused by wire transmission. For example, in the field of medical equipment, electronic computed tomography (CT) equipment generally uses slip rings to transmit power when performing cross-sectional scans on patients.

[0003] However, traditional slip rings generally transmit power or signals in a single line. Therefore, when a fault occurs somewhere in the coil, such as a broken line, the entire coil will be unable to transmit power or signals, affecting the reliability of the mechanical equipment. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a slip ring and an electronic computer tomography device to solve the technical problem in the prior art that the slip ring transmits power or signals on a single line, so that when a fault occurs somewhere in the coil, the entire coil will be unable to transmit power or signals.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a slip ring, comprising: a stator, a first coil, a rotor and a second coil, the first coil is installed on the stator, the first coil comprises coil units distributed along the circumference of the stator, at least part of the coil units are connected in parallel to an external transmission circuit; the rotor is arranged corresponding to the stator, the second coil is installed on the rotor and coupled with the first coil; either the first coil or the second coil is a transmitting coil, and the other is a receiving coil.

[0006] The slip ring provided by the present application has the following beneficial effects: compared with the prior art, the slip ring of the present application installs the first coil on the stator, the rotor is arranged corresponding to the stator, and the second coil is installed on the rotor and coupled with the first coil, so that when the rotor rotates relative to the stator, the transmitting coil can continuously transmit power or signals to the receiving coil; by connecting at least part of the coil units of the first coil in parallel to the external transmission circuit, multiple coil units can transmit power or signals in parallel, so that when any part of the coil units in the part fails and cannot transmit power or signals normally, the remaining coil units can continue to transmit power or signals to maintain the normal operation of the slip ring, which is beneficial to improving the stability and reliability of the operation of the mechanical equipment.

[0007] Optionally, at least part of the coil units are independently and detachably mounted on the stator.

[0008] The above technical solution, by independently and detachably installing at least part of the coil units on the stator, when a part of the coil units fails, only the coil units need to be disassembled and replaced without disassembling and replacing the entire first coil, which is beneficial to saving costs and reducing labor intensity.

[0009] Optionally, the coil unit is provided with a positive electrode connector and a negative electrode connector, and the coil unit can be electrically connected to an external transmission circuit and / or an external detection device via the positive electrode connector and / or the negative electrode connector.

[0010] In the above technical solution, each coil unit is connected to an external transmission circuit through its own positive and / or negative terminals to form a parallel power or signal transmission relationship. In addition, the impedance of the positive and / or negative terminals can be detected by an external detection device to detect the circuit continuity of each coil unit, thereby realizing fault diagnosis of the coil unit, thereby quickly and accurately locating the faulty coil unit, so that the faulty coil unit can be replaced in a targeted manner.

[0011] Optionally, the stator is provided with a mounting opening, the first coil is arranged on the inner circumferential wall of the mounting opening, the rotor is rotatably arranged in the mounting opening, the second coil is arranged on the outer circumferential wall of the rotor, and the first coil is radially coupled to the second coil.

[0012] The above technical solution, by opening a mounting opening on the stator, arranging the first coil on the inner circumferential wall of the mounting opening, arranging the rotor in the mounting opening, and arranging the second coil on the outer circumferential wall of the rotor, makes the first coil and the second coil be arranged between the stator and the rotor along the radial direction of the mounting opening, realizes radial coupling between the first coil and the second coil, which is beneficial to improve the stability of power or signal transmission between the first coil and the first coil.

[0013] Optionally, the first coil and the second coil are spaced apart in a radial direction of the mounting opening, and the first coil and the second coil are non-contact coupled.

[0014] The above technical solution, by arranging the first coil and the second coil at radial intervals along the mounting opening and enabling non-contact coupling between the first coil and the second coil, enables wireless transmission of power or signals between the first coil and the second coil, eliminates the need for carbon brushes, is beneficial to cost saving, and eliminates the need for regular replacement of carbon brushes and cleaning of slip rings, is beneficial to environmental protection, and effectively ensures the stability of the slip ring in long-term power or signal transmission.

[0015] Optionally, in the radial direction of the mounting opening, a carbon brush is provided between the first coil and the second coil, and the first coil and the second coil are coupled through the carbon brush.

[0016] In the above technical solution, the first coil and the second coil are contact-coupled via the carbon brush, so that power or signal is transmitted between the first coil and the second coil via the carbon brush, and the transmission stability is good.

[0017] Optionally, there are multiple coil units, and the multiple coil units are spliced ​​into an annular structure along the circumference of the installation opening, and the annular structure is adapted to the installation opening.

[0018] The above technical solution, by splicing multiple coil units into an annular structure along the circumference of the stator, the annular structure is adapted to the installation opening, which is beneficial to increasing the contact area between the first coil and the inner circumferential wall of the installation opening, and is beneficial to improving the stability of the coil unit installed on the stator. At the same time, it is beneficial to improve the utilization rate of the installation opening space.

[0019] Optionally, the installation opening is circular, and each of the coil units is arc-shaped and fits with the inner circumferential wall of the installation opening.

[0020] The above technical solution, by setting the coil unit to an arc shape that matches the inner circumferential wall of the installation opening, is conducive to increasing the contact area between the coil unit and the inner circumferential wall of the installation opening, and can make the coil unit fit more stably on the inner circumferential wall of the installation opening.

[0021] Optionally, a plurality of winding posts are provided on the outer peripheral wall of the rotor, and the plurality of winding posts are arranged at intervals along the circumferential direction of the rotor. The second coil includes a plurality of second coil bodies, and the plurality of second coil bodies are respectively wound around the plurality of winding posts.

[0022] The above technical solution is easy to manufacture by winding the plurality of second coil bodies one by one on the plurality of winding poles, and can stably mount the second coil on the rotor, and when the second coil rotates with the rotor, power or signal can be continuously and stably transmitted between the first coil and the second coil.

[0023] An embodiment of the present application provides an electronic computer tomography device, comprising a fixed frame, a rotating frame and any one of the slip rings described above, wherein the stator is mounted on the fixed frame, and the rotor is mounted on the rotating frame.

[0024] The beneficial effects of the electronic computer tomography equipment provided by the present application are as follows: compared with the prior art, the above-mentioned slip ring is adopted, and the stator is installed on the fixed frame, and the rotor is installed on the rotating frame. When the rotating frame rotates relative to the fixed frame, the rotating frame drives the rotor to rotate relative to the stator, and at the same time, the transmitting coil continuously transmits power or signals to the receiving coil; by connecting at least part of the coil units of the first coil in parallel to the external transmission circuit, the part of the coil units can transmit power or signals in parallel, so that when any part of the coil units in the part fails and cannot transmit power or signals normally, the remaining part of the coil units can continue to transmit power or signals to maintain the normal operation of the slip ring, which is beneficial to improving the stability and reliability of the operation of the mechanical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 Schematic diagram of the explosion structure of the slip ring provided in some embodiments of the present application Figure 1 ;

[0027] Figure 2 A schematic diagram of an exploded structure of a first coil and a stator provided in some embodiments of the present application;

[0028] Figure 3 Schematic diagram of the three-dimensional structure of the first coil provided in some embodiments of the present application Figure 1 ;

[0029] Figure 4 Schematic diagram of the three-dimensional structure of the first coil provided in some embodiments of the present application Figure 2 .

[0030] Among them, the reference numerals in the figure are:

[0031] 10. stator; 11. mounting opening; 20. first coil; 21. coil unit; 30. rotor; 31. winding pole; 40. second coil; 41. second coil body. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0038] Please also read Figures 1 to 4 The slip ring provided in the embodiment of the present application is now described. The slip ring is mainly used in medical equipment, such as computer tomography equipment, and of course, can also be used in other mechanical equipment that needs to rotate 360 ​​degrees.

[0039] See also Figure 1 and Figure 2 The slip ring includes a stator 10, a first coil 20, a rotor 30 and a second coil 40. The first coil 20 is mounted on the stator 10. The first coil 20 includes coil units 21 distributed along the circumference of the stator 10. At least part of the coil units 21 are connected in parallel to an external transmission circuit. The rotor 30 is arranged corresponding to the stator 10. The second coil 40 is mounted on the rotor 30 and coupled with the first coil 20. Either one of the first coil 20 and the second coil 40 is a transmitting coil, and the other is a receiving coil.

[0040] Specifically in this embodiment, the first coil 20 is a power transmitting coil, the second coil 40 is a power receiving coil, the second coil 40 is power coupled with the first coil 20 to form a power coupling loop, and the first coil 20 can transmit power to the second coil 40. Alternatively, the first coil 20 is a power receiving coil, the second coil 40 is a power transmitting coil, the second coil 40 is power coupled with the first coil 20 to form a power coupling loop, and the second coil 40 can transmit power to the first coil 20.

[0041] Of course, in other embodiments, the first coil 20 may be a signal transmitting coil, the second coil 40 may be a signal receiving coil, the second coil 40 may be signal coupled with the first coil 20 to form a signal coupling loop, and the first coil 20 may transmit the signal to the second coil 40. Alternatively, the first coil 20 may be a signal receiving coil, the second coil 40 may be a signal transmitting coil, the second coil 40 may be signal coupled with the first coil 20 to form a signal coupling loop, and the second coil 40 may transmit the signal to the first coil 20.

[0042] At least part of the coil units 21 are connected in parallel to the external transmission circuit, which means that at least part of the coil units 21 can transmit power or signals in parallel, that is, the coil units 21 in this part transmit power or signals independently without interfering with each other, and when one of the coil units 21 in this part fails and cannot be used normally, the other coil units 21 can transmit power or signals normally. For example, the number of coil units 21 is two, and the two coil units 21 are distributed along the circumference of the stator 10. The two coil units 21 are connected in parallel to the external transmission circuit, so that the two coil units 21 can transmit power or signals in parallel. It can be understood that the two coil units 21 transmit power or signals independently, and when one of the coil units 21 fails, such as a broken line, and cannot transmit power or signals normally, the other coil unit 21 is not affected, that is, the coil unit 21 can continue to transmit power or signals.

[0043] The rotor 30 and the stator 10 are disposed correspondingly, which may mean that the rotor 30 and the stator 10 are disposed coaxially and oppositely, or that the rotor 30 is disposed in the stator 10, or that the stator 10 is disposed in the rotor 30. The second coil 40 is coupled in parallel with each coil unit 21 of the first coil 20, and when the rotor 30 rotates relative to the stator 10, power or signals can be transmitted between the second coil 40 on the rotor 30 and the first coil 20 on the stator 10.

[0044] Compared with the prior art, the slip ring provided by the present application is characterized in that the first coil 20 is installed on the stator 10, the rotor 30 is arranged corresponding to the stator 10, and the second coil 40 is installed on the rotor 30 and coupled with the first coil 20, so that when the rotor 30 rotates relative to the stator 10, the transmitting coil can continuously transmit power or signals to the receiving coil; at least part of the coil units 21 of the first coil 20 are connected in parallel to the external transmission circuit, so that power or signals can be transmitted in parallel between the coil units 21, so that when any part of the coil units 21 in the part fails and cannot transmit power or signals normally, it will not affect the power or signal transmission work of the remaining coil units 21, that is, the remaining coil units 21 can continue to transmit power or signals to maintain the normal operation of the slip ring, which is beneficial to improve the stability and reliability of the operation of the mechanical equipment.

[0045] In applying for an embodiment, please refer to Figure 2 and Figure 4 , at least part of the coil units 21 are independently and detachably mounted on the stator 10 .

[0046] Optionally, the coil unit 21 can be clamped on the stator 10, for example, by providing a plurality of spaced slots on the periphery of the stator 10, and clamping the coil unit 21 in the corresponding slots by interference fit. The coil unit 21 can also be bonded to the stator 10, for example, by gluing the coil unit 21 to the periphery of the stator 10 by a colloid. The coil unit 21 can also be buckled on the stator 10, for example, by providing a plurality of spaced hooks on the periphery of the stator 10, opening buckle slots on each coil unit 21, placing the coil unit 21 on the periphery of the stator 10, and then buckling the hooks into the corresponding buckle slots. Alternatively, it can be installed using fasteners such as bolts and screws, and the installation method is not limited in the embodiments of the present application.

[0047] The above technical solution, by independently and detachably installing at least part of the coil unit 21 on the stator 10, when a part of the coil unit 21 fails, only the coil unit 21 needs to be disassembled and replaced, without the need to disassemble and replace the entire first coil 20, which is beneficial to saving costs and reducing labor intensity.

[0048] Of course, in other embodiments, all coil units 21 may be spliced ​​into one piece first, and then assembled onto the stator 10 , which is convenient for assembly.

[0049] Furthermore, two adjacent coil units 21 are insulated from each other. Specifically, an insulator is provided between two adjacent coil units 21 .

[0050] Optionally, the insulator may be made of plastic, rubber, ceramic, glass, polymer material, etc. The insulator is used to electrically isolate two adjacent coil units 21 .

[0051] The above technical solution, by arranging an insulator between two adjacent coil units 21, the insulator performs insulation treatment between the two adjacent coil units 21, effectively avoiding electrical interference between the two adjacent coil units 21, and effectively ensuring the stability and reliability of power or signal transmission of each coil unit 21.

[0052] In one embodiment of the application, each coil unit 21 is provided with a positive electrode connector and a negative electrode connector, and each coil unit 21 can be electrically connected to an external transmission circuit and / or an external detection device through the positive electrode connector and / or the negative electrode connector.

[0053] Optionally, the external transmission circuit is an inverter circuit, and the coil units 21 are connected to the inverter circuit through their respective positive and negative terminals, forming a parallel power or signal transmission relationship. In addition, the impedance of the positive and negative terminals can be detected by external detection equipment to detect the circuit continuity of each coil unit 21, so as to perform fault diagnosis on the coil unit 21, thereby quickly and accurately locating the coil unit 21 that has a fault, so that the coil unit 21 that has a fault can be replaced in a targeted manner.

[0054] In applying for an embodiment, please refer to Figure 1 and Figure 2 A mounting opening 11 is provided on the stator 10, the first coil 20 is arranged on the inner circumferential wall of the mounting opening 11, the rotor 30 is rotatably arranged in the mounting opening 11, and the rotor 30 is annular along the circumferential direction of the mounting opening 11, the second coil 40 is arranged on the outer circumferential wall of the rotor 30, and the first coil 20 is radially coupled with the second coil 40.

[0055] Specifically, since the first coil 20 is arranged on the inner circumferential wall of the mounting opening 11 and the second coil 40 is arranged on the outer circumferential wall of the rotor 30, when the rotor 30 is arranged in the mounting opening 11, the first coil 20 and the second coil 40 are arranged between the stator 10 and the rotor 30 along the radial direction of the mounting opening 11, so that the first coil 20 and the second coil 40 are coupled in power or signal along the radial direction of the mounting opening 11.

[0056] The coil units 21 of the first coil 20 are distributed along the inner circumferential wall of the mounting opening 11. Furthermore, all the coil units 21 are compactly arranged on the inner circumferential wall of the mounting opening 11 along the circumferential direction of the mounting opening 11, so that the outer contour size of the first coil 20 is roughly adapted to the contour of the mounting opening 11, so that when the rotor 30 drives the second coil 40 to rotate relative to the stator 10, the first coil 20 can continuously and uninterruptedly transmit power or signals to the second coil 40.

[0057] The above technical solution, by opening a mounting opening 11 on the stator 10, disposing the first coil 20 on the inner circumferential wall of the mounting opening 11, disposing the rotor 30 in the mounting opening 11, and disposing the second coil 40 on the outer circumferential wall of the rotor 30, so that the first coil 20 and the second coil 40 are disposed between the stator 10 and the rotor 30 along the radial direction of the mounting opening 11, thereby realizing radial coupling between the first coil 20 and the second coil 40, which is beneficial to improving the stability of power or signal transmission between the first coil 20 and the first coil 20.

[0058] In one embodiment of the application, the first coil 20 and the second coil 40 are spaced apart in the radial direction of the installation opening 11 , and the first coil 20 and the second coil 40 are non-contact coupled.

[0059] Specifically, in the radial direction of the mounting port 11, there is a preset distance between the first coil 20 and the second coil 40, and wireless power or signal coupling is performed between the first coil 20 and the second coil 40. In this way, when the second coil 40 rotates with the rotor 30, the second coil 40 does not contact the first coil 20, so that power or signal is wirelessly transmitted between the first coil 20 and the second coil 40.

[0060] The above technical solution, by arranging the first coil 20 and the second coil 40 at radial intervals along the mounting opening 11 and enabling non-contact coupling between the first coil 20 and the second coil 40, enables wireless transmission of power or signals between the first coil 20 and the second coil 40, eliminating the need for carbon brushes, which is beneficial to cost saving, and eliminating the need for regular replacement of carbon brushes and cleaning of slip rings, which is beneficial to environmental protection and effectively ensures the stability of the slip ring in long-term power or signal transmission.

[0061] Of course, in other embodiments, a carbon brush may be provided between the first coil 20 and the second coil 40 in the radial direction of the mounting opening 11, and the first coil 20 and the second coil 40 are coupled through the carbon brush. For example, the carbon brush is provided on the coil unit 21 of the first coil 20, and when the rotor 30 drives the second coil 40 to rotate relative to the stator 10, the carbon brush can contact the second coil 40, thereby realizing contact coupling between the first coil 20 and the second coil 40.

[0062] In the above technical solution, the first coil 20 and the second coil 40 are contact-coupled via the carbon brush, so that power or signals are transmitted between the first coil 20 and the second coil 40 via the carbon brush, and the transmission stability is good.

[0063] In applying for an embodiment, please refer to Figure 1 and Figure 3 There are multiple coil units 21 , and the multiple coil units 21 are spliced ​​into an annular structure along the circumference of the stator 10 , and the annular structure is adapted to the installation opening 11 .

[0064] The splicing of multiple coil units 21 along the circumferential direction of the stator 10 means that the ends of two adjacent coil units 21 are arranged correspondingly and close to each other in the circumferential direction of the mounting opening 11, and the two adjacent coil units 21 are insulated. The matching of the annular structure with the mounting opening 11 means that the outer contour size of the annular structure is matched with the size of the mounting opening 11, and when the first coil 20 is installed on the stator 10, the outer peripheral wall of the annular structure matches and fits with the inner peripheral wall of the mounting opening 11.

[0065] The above technical solution, by splicing multiple coil units 21 into an annular structure along the circumference of the stator 10, the annular structure is adapted to the installation opening 11, which is beneficial to increasing the contact area between the first coil 20 and the inner circumferential wall of the installation opening 11, and can make the coil unit 21 better fit on the inner circumferential wall of the installation opening 11, which is beneficial to improving the stability of the coil unit 21 installed on the stator 10, and at the same time, it is beneficial to improve the utilization rate of the space of the installation opening 11.

[0066] Specifically in this embodiment, the installation opening 11 is circular, and each coil unit 21 is arc-shaped and fits with the inner peripheral wall of the installation opening 11 .

[0067] Specifically, each coil unit 21 has the same shape and size, is arc-shaped, and is concentric with the installation opening 11. Multiple coil units 21 are evenly distributed along the circumference of the installation opening 11, so that the annular structure is roughly circular, and the annular structure is concentric with the installation opening 11.

[0068] Optionally, the number of coil units 21 is two, both coil units 21 are arc-shaped, and each coil unit 21 has a "saddle" structure. Of course, the number of coil units 21 can also be other numbers, such as three, four, etc., which can be set specifically according to the size of the installation opening 11.

[0069] The above technical solution, by setting the coil unit 21 to an arc shape that matches the inner circumferential wall of the installation opening 11, is conducive to increasing the contact area between the coil unit 21 and the inner circumferential wall of the installation opening 11, and can make the coil unit 21 fit more stably on the inner circumferential wall of the installation opening 11.

[0070] In one embodiment of the application, the coil unit 21 includes a support body and a first coil body. The support body is arc-shaped, and the first coil body is wound on the support body.

[0071] Optionally, the support body is made of a hard insulating material, and a through hole is provided on the support body, and the first coil body is wound around the through hole on the side of the support body facing the rotor 30. The first coil body has multiple turns, and the multiple turns of the first coil body are arranged in sequence from the inner edge of the support body to the outer edge of the support body.

[0072] The above technical solution, by winding the first coil body on the support body, and the support body is arc-shaped, so that the coil unit 21 can be stably maintained in the arc-shaped structure and is easy to disassemble and assemble.

[0073] In applying for an embodiment, please refer to Figure 1 The second coil 40 includes a plurality of second coil bodies 41 , and the plurality of second coil bodies 41 are spaced apart and distributed along the circumferential direction of the rotor 30 .

[0074] Optionally, the rotor 30 is annular and is disposed concentrically with the mounting opening 11 , and the plurality of second coil bodies 41 are distributed at equal intervals along the circumferential direction of the rotor 30 .

[0075] The above technical solution distributes the multiple second coil bodies 41 of the second coil 40 at equal intervals along the circumference of the rotor 30, so that when the second coil 40 rotates with the rotor 30, power or signals can be continuously and stably transmitted between the first coil 20 and the second coil 40.

[0076] In one embodiment of the application, a plurality of winding posts 31 are provided on the outer peripheral wall of the rotor 30 , and the plurality of winding posts 31 are arranged at intervals along the circumference of the rotor 30 , and the plurality of second coil bodies 41 are respectively wound around the plurality of winding posts 31 .

[0077] Specifically, the number of winding poles 31 is equal to the number of second coil bodies 41, and the plurality of winding poles 31 are evenly arranged along the circumference of the rotor 30 and extend along the radial direction of the rotor 30 toward the direction of the first coil 20, and the plurality of second coil bodies 41 are respectively spirally wound around the plurality of winding poles 31 one by one.

[0078] Optionally, the winding post 31 may be rectangular, cylindrical, or the like.

[0079] The above technical solution is easy to manufacture by winding the plurality of second coil bodies 41 one by one on the plurality of winding poles 31 , and can enable the second coil 40 to be installed on the rotor 30 more stably.

[0080] Of course, in other embodiments, the plurality of second coil bodies 41 may be arranged on the outer peripheral wall of the rotor 30 along the circumferential direction of the rotor 30 by bonding, or the plurality of second coil bodies 41 may be respectively accommodated in the plurality of grooves by opening a plurality of grooves on the outer peripheral wall of the rotor 30 .

[0081] The embodiment of the present application further provides an electronic computer tomography device, comprising a fixed frame, a rotating frame and a slip ring of any of the above embodiments; wherein the stator 10 is installed on the fixed frame, and the rotor 30 is installed on the rotating frame.

[0082] Compared with the prior art, the electronic computer tomography equipment provided in the present application adopts the above-mentioned slip ring, and the stator 10 is installed on a fixed frame, and the rotor 30 is installed on a rotating frame. When the rotating frame rotates relative to the fixed frame, the rotating frame drives the rotor 30 to rotate relative to the stator 10, and at the same time, the transmitting coil continuously transmits power or signals to the receiving coil; by connecting at least part of the coil units 21 of the first coil 20 in parallel to the external transmission circuit, the part of the coil units 21 can transmit power or signals in parallel, so that when any part of the coil units 21 in the part fails and cannot transmit power or signals normally, the remaining part of the coil units 21 can continue to transmit power or signals to maintain the normal operation of the slip ring, which is beneficial to improve the stability and reliability of the operation of the mechanical equipment.

[0083] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A slip ring, characterized in that: The invention comprises a stator (10), a first coil (20), a rotor (30) and a second coil (40), wherein the first coil (20) is mounted on the stator (10), the first coil (20) comprises coil units (21) distributed along the circumference of the stator (10), and at least part of the coil units (21) are connected in parallel to an external transmission circuit; the rotor (30) is arranged corresponding to the stator (10), the second coil (40) is mounted on the rotor (30) and coupled to the first coil (20); either the first coil (20) or the second coil (40) is a transmitting coil, and the other is a receiving coil.

2. The slip ring according to claim 1, characterized in that: At least part of the coil unit (21) is independently and detachably mounted on the stator (10).

3. The slip ring according to claim 1, characterized in that: The coil unit (21) is provided with a positive electrode connector and a negative electrode connector, and the coil unit (21) can be electrically connected to an external transmission circuit and / or an external detection device via the positive electrode connector and / or the negative electrode connector.

4. The slip ring according to claim 1, characterized in that: The stator (10) is provided with a mounting opening (11), the first coil (20) is arranged on the inner peripheral wall of the mounting opening (11), the rotor (30) is rotatably arranged in the mounting opening (11), the second coil (40) is arranged on the outer peripheral wall of the rotor (30), and the first coil (20) and the second coil (40) are radially coupled.

5. The slip ring according to claim 4, characterized in that: The first coil (20) and the second coil (40) are arranged at intervals along the radial direction of the installation opening (11), and the first coil (20) and the second coil (40) are non-contact coupled.

6. The slip ring according to claim 4, characterized in that: In the radial direction of the installation opening (11), a carbon brush is arranged between the first coil (20) and the second coil (40), and the first coil (20) and the second coil (40) are coupled via the carbon brush.

7. The slip ring according to claim 4, characterized in that: The number of the coil units (21) is multiple, and the multiple coil units (21) are spliced ​​into an annular structure along the circumference of the installation opening (11), and the annular structure is adapted to the installation opening (11).

8. The slip ring according to claim 7, characterized in that: The installation opening (11) is circular, and each coil unit (21) is arc-shaped and is adapted to fit the inner peripheral wall of the installation opening (11).

9. The slip ring according to any one of claims 4 to 8, characterized in that: A plurality of winding posts (31) are provided on the outer peripheral wall of the rotor (30), and the plurality of winding posts (31) are arranged at intervals along the circumferential direction of the rotor (30). The second coil (40) comprises a plurality of second coil bodies (41), and the plurality of second coil bodies (41) are respectively wound around the plurality of winding posts (31).

10. An electronic computer tomography device, characterized in that: It comprises a fixed frame, a rotating frame and a slip ring as claimed in any one of claims 1 to 9, wherein the stator (10) is mounted on the fixed frame, and the rotor (30) is mounted on the rotating frame.

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