An easy-to-disassemble vertical brush type metal filament CT slip ring

Abstract

This invention relates to the field of CT slip ring technology, specifically to an easily detachable vertical brush-type metal filament CT slip ring, comprising a frame, a rotor structure, and a stator structure. The rotor structure includes a disc and a copper ring, with the copper ring mounted on the disc. The stator structure includes a mounting base, a brush holder, metal brush filaments, and a wire. The mounting base is mounted on the frame. The brush holder is mounted on the mounting base. The metal brush filaments are mounted on the brush holder, with one end of the brush filaments close to the copper ring in tight contact with the copper ring. The other end of the brush filaments, away from the copper ring, is connected to a wire, which extends through the brush holder to the outside of the brush holder. This invention, through the disc, copper ring, mounting base, brush holder, metal brush filaments, and wire, achieves the function of reducing brush filament resistance fluctuations while reducing maintenance frequency, thus avoiding accidents caused by carbon powder accumulation during brush filament use and solving the problem of frequent carbon powder cleaning required by traditional CT slip rings.

Description

Technical Field

[0001] This invention relates to the field of CT slip ring technology, specifically to a vertical brush type metal wire CT slip ring that is easy to assemble and disassemble. Background Technology

[0002] Slip rings are one of the core components of a CT system, used for power, signal, and data transmission between the rotating and stationary ends of the CT scanner. Traditional CT slip rings mostly use carbon brushes, but this has many drawbacks.

[0003] The contact surfaces of the carbon brush and the copper ring are two large, rigid planes. When they are in full contact, the resistance is very low. However, when the surface of the copper ring is uneven, it can easily lead to poor contact and increased low-resistance fluctuations. Poor contact can also occur when the copper ring rotates if the machining and assembly precision is not high.

[0004] To ensure better contact between the carbon brush and the copper ring surface, current technology involves installing springs on the carbon brush to create a suspension device, and making the guide rails loose to allow the carbon brush to swing slightly, thereby enhancing contact. However, this also results in a significant amount of carbon powder falling off. Excessive carbon powder buildup can lead to accidents, requiring frequent cleaning. This carbon powder can also affect the contact between the carbon brush and the copper ring, and may even cause short circuits or fires during use. Furthermore, CT slip rings are typically installed on large equipment, making cleaning difficult and maintenance costs high. Summary of the Invention

[0005] To address the aforementioned issues, a vertical brush-type metal filament CT slip ring that is easy to assemble and disassemble is provided. This design, consisting of a disc body, copper ring, mounting base, brush holder, metal filaments, and wires, solves the problem of frequent toner cleaning required by traditional CT slip rings.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0007] A vertical brush-type metal filament CT slip ring that is easy to assemble and disassemble includes a frame, a rotor structure, and a stator structure. The rotor structure includes a disc and a copper ring, with the copper ring mounted on the disc. The stator structure includes a mounting base, a brush holder, metal brush filaments, and a wire. The mounting base is mounted on the frame. The brush holder is mounted on the mounting base. The metal brush filaments are mounted on the brush holder, with one end of the metal brush filaments close to the copper ring in tight contact with the copper ring. The other end of the metal brush filaments away from the copper ring is connected to a wire, which extends through the brush holder to the outside of the brush holder.

[0008] Preferably, the CT slip ring further includes a clamping structure, which includes an insulating seat, a copper tube, and a first elastic element; the insulating seat is mounted on the brush holder; the copper tube is sleeved on the metal brush filaments and is located inside the brush holder, the metal brush filaments extend through the insulating seat into the brush holder; a shoulder is installed on the copper tube, and the two ends of the first elastic element are fixedly connected to the shoulder and the brush holder, respectively.

[0009] Preferably, the CT slip ring further includes a mounting structure, which includes a guide assembly and a fixing assembly; the guide assembly includes a limiting block, which is fixedly mounted on the brush holder; a slide rail is provided on the mounting base, and the brush holder is slidably mounted on the slide rail via the limiting block; the fixing assembly is mounted on the mounting base and is used to fix the brush holder.

[0010] Preferably, the fixing component includes a positioning block, a mounting plate, a pin, and a second elastic member; the positioning block is mounted on the mounting base; the pin is mounted on the mounting plate, and the pin slides with the positioning block, and the limiting block has a positioning hole that mates with the pin; the two ends of the second elastic member are fixedly connected to the mounting plate and the positioning block, respectively.

[0011] Preferably, the mounting base has a sliding groove, and the positioning block is slidably installed in the sliding groove; the mounting base is provided with an adjustment component for controlling the sliding of the positioning block along the sliding groove.

[0012] Preferably, the adjustment assembly includes a screw and a rotary handle; the screw is rotatably mounted on the mounting base and is threadedly connected to the positioning block; the rotary handle is fixedly sleeved on the end of the screw away from the mounting base.

[0013] Preferably, the CT slip ring further includes a protective structure, which includes a cover plate and a limiting plate; the cover plate is rotatably mounted on the mounting bracket by a torsion spring; the limiting plate is mounted on the mounting bracket and is located at the end of the slide rail.

[0014] Preferably, the metal brush bristles are composed of fine metal filaments with a diameter of less than 0.08 mm.

[0015] Preferably, the metal brush bristles are perpendicular to the surface of the copper ring.

[0016] Preferably, the end of the metal brush filament that contacts the copper ring is provided with a nickel-phosphorus alloy plating.

[0017] The advantages of this invention compared to the prior art are:

[0018] 1. This invention reduces brush filament resistance fluctuations and maintenance frequency through a disc body, copper ring, mounting base, brush holder, metal brush filaments, and wires. It also avoids carbon buildup on the brush filaments during use, thus solving the problem of frequent carbon cleaning required for traditional CT slip rings.

[0019] 2. The present invention achieves the function of pressing the metal brush filaments against the copper ring through the insulating seat, the shaft shoulder and the first elastic element.

[0020] 3. This invention achieves the function of quick assembly and disassembly of the brush holder through limiting blocks, slide rails and fixing components. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of a vertical brush-type metal filament CT slip ring that is easy to assemble and disassemble;

[0022] Figure 2 This is a three-dimensional schematic diagram of the rotor and stator structures in a vertical brush-type metal filament CT slip ring that is easy to assemble and disassemble.

[0023] Figure 3 This is a three-dimensional exploded view of the disc body and copper ring in a vertical brush type metal filament CT slip ring that is easy to disassemble and assemble.

[0024] Figure 4 This is a three-dimensional schematic diagram of the stator structure in a vertical brush type metal filament CT slip ring that is easy to assemble and disassemble.

[0025] Figure 5 This is a cross-sectional schematic diagram of the brush holder in a vertical brush-type metal filament CT slip ring that is easy to assemble and disassemble.

[0026] Figure 6 This is a three-dimensional schematic diagram of the mounting base of an easily disassembled vertical brush type metal filament CT slip ring when the fixing component is released.

[0027] Figure 7 This is a top view of the mounting base of an easily disassembled vertical brush type metal filament CT slip ring when the fixing component is released;

[0028] Figure 8 yes Figure 7 A three-dimensional cross-sectional view of AA;

[0029] Figure 9 This is a three-dimensional schematic diagram of the adjustment component in a vertical brush-type metal filament CT slip ring that is easy to assemble and disassemble.

[0030] The numbers on the map are:

[0031] 1-Rack;

[0032] 2-Rotor structure;

[0033] 21-Disc body; 211-Counterhead hole; 212-Through hole;

[0034] 22-Copper ring; 221-Blind hole;

[0035] 3-Stator structure;

[0036] 31-Mounting base; 311-Bracket;

[0037] 32-Brush holder;

[0038] 33-Metal brush bristles;

[0039] 34-Wire;

[0040] 4-Compression structure;

[0041] 41-Insulating base; 411-Bolt;

[0042] 42 - Copper tube; 421 - Shoulder;

[0043] 43 - First elastic element;

[0044] 5-Installation structure;

[0045] 51-Guide assembly; 511-Limit block; 512-Slide rail; 513-Positioning hole;

[0046] 52-Fixing component; 521-Positioning block; 522-Mounting plate; 523-Pin; 524-Second elastic element; 525-Slide groove; 526-Simple handle;

[0047] 53-Adjusting component; 531-Screw; 532-Rotating handle;

[0048] 6- Protective structure;

[0049] 61-Cover plate;

[0050] 62-Limit plate. Detailed Implementation

[0051] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0052] Reference Figures 1-9 A vertical brush-type metal filament CT slip ring that is easy to assemble and disassemble includes a frame 1, a rotor structure 2, and a stator structure 3. The rotor structure 2 includes a disc 21 and a copper ring 22, with the copper ring 22 mounted on the disc 21. The stator structure 3 includes a mounting base 31, a brush holder 32, metal brush filaments 33, and a wire 34. The mounting base 31 is mounted on the frame 1. The brush holder 32 is mounted on the mounting base 31. The metal brush filaments 33 are mounted on the brush holder 32, with one end of the metal brush filaments 33 close to the copper ring 22 in tight contact with the copper ring 22. The other end of the metal brush filaments 33 away from the copper ring 22 is connected to the wire 34, which extends through the brush holder 32 to the outside of the brush holder 32.

[0053] This invention, through a disc body 21, a copper ring 22, a mounting base 31, a brush holder 32, metal brush filaments 33, and a wire 34, achieves the function of reducing brush filament resistance fluctuations while reducing maintenance frequency, thus avoiding accidents caused by carbon powder accumulation during brush filament use and solving the problem of frequent carbon powder cleaning required by traditional CT slip rings. The disc body 21 is made of insulating material, and the copper ring 22 is carved from a single piece of copper plate. One side of the copper ring 22 is machined with a threaded hole and a blind hole 221 for welding the wire 34. A groove for placing the copper ring 22 is milled on the disc body 21, and a through hole 212 is drilled at the bottom of the groove for fixing the copper ring 22 and for the wire 34 to pass through. The edge of the disc body 21 is machined with a countersunk hole 211 for assembly. Compared with the prior art, this application uses metal brush filaments 33 to replace carbon brushes in contact with the copper ring 22, improving the contact conditions between the brush and the copper ring 22, producing less dust, reducing maintenance costs, and increasing service life.

[0054] Reference Figure 1 , Figure 2 and Figure 5 The CT slip ring also includes a clamping structure 4, which includes an insulating seat 41, a copper tube 42, and a first elastic element 43. The insulating seat 41 is mounted on the brush holder 32. The copper tube 42 is sleeved on the metal brush filaments 33 and is located inside the brush holder 32. The metal brush filaments 33 extend through the insulating seat 41 into the brush holder 32. A shoulder 421 is mounted on the copper tube 42. The two ends of the first elastic element 43 are fixedly connected to the shoulder 421 and the brush holder 32, respectively.

[0055] This invention achieves the function of pressing the metal brush filament 33 against the copper ring 22 through the insulating seat 41, the shoulder 421, and the first elastic element 43. The insulating seat 41 is fixedly connected to the brush holder 32 by bolts 411. The metal brush filament 33 is inserted into the copper tube 42, adjusted and pressed tightly. One end of the metal brush filament 33 passes through the insulating seat 41 and extends towards the copper ring 22. The other end of the metal brush filament 33 is flush with the opening of the copper tube 42. The end flush with the opening is connected to the wire 34. The wire 34 is as flexible as possible while meeting the current requirements. The first elastic element 43 is preferably a spring. The inner diameter of the spring is slightly larger than the outer diameter of the copper tube 42, and the outer diameter is smaller than the diameter of the shoulder 421. The wire diameter and length of the spring are selected according to the required pressure. The brush holder 32 and the insulating seat 41 cooperate to form a number of tubes that are thicker in the middle and thinner at both ends, which respectively hold the shoulder 421 of the copper tube 42 and the other end of the spring. The spacing between the tubes is equal to the spacing between the rings of the copper ring 22.

[0056] Reference Figure 1 , Figure 4 , Figure 5 and Figure 8The CT slip ring also includes a mounting structure 5, which includes a guide component 51 and a fixing component 52. The guide component 51 includes a limiting block 511, which is fixedly mounted on the brush holder 32. A slide rail 512 is provided on the mounting base 31, and the brush holder 32 is slidably mounted on the slide rail 512 through the limiting block 511. The fixing component 52 is mounted on the mounting base 31 and is used to fix the brush holder 32.

[0057] This invention enables quick assembly and disassembly of the brush holder 32 through the limiting block 511, the slide rail 512, and the fixing component 52. When maintaining the brush holder 32, the operator first removes the fixing component 52 from the brush holder 32, then slides the brush holder 32 to remove it from the mounting base 31, and then maintains the metal bristles 33. After maintenance, the operator aligns the limiting block 511 with the slide rail 512, installs the brush holder 32 onto the mounting base 31, slides it to a suitable position, and then fixes it with the fixing component 52.

[0058] Reference Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The fixing component 52 includes a positioning block 521, a mounting plate 522, a pin 523, and a second elastic member 524. The positioning block 521 is mounted on the mounting base 31. The pin 523 is mounted on the mounting plate 522 and slides with the positioning block 521. The limiting block 511 has a positioning hole 513 that mates with the pin 523. The two ends of the second elastic member 524 are fixedly connected to the mounting plate 522 and the positioning block 521, respectively.

[0059] This invention achieves the function of fixing the brush holder 32 through the positioning block 521, mounting plate 522, pin 523, and second elastic element 524; a simple handle 526 is installed on the mounting plate 522; when the operator maintains the brush holder 32, he first grasps the simple handle 526, overcomes the elastic force of the second elastic element 524, and slides the mounting plate 522 away from the positioning block 521, so that the pin 523 disengages from the positioning hole 513, thereby releasing the fixing component 52 from the brush holder 32, and then slides the brush holder 32 to remove it from the positioning block 521. Remove the brush holder 32 from the mounting base 31 and then maintain the metal brush bristles 33. After maintenance, the operator aligns the limiting block 511 with the slide rail 512, installs the brush holder 32 onto the mounting base 31, and then pulls the simple handle 526 to prevent the pin 523 from obstructing the sliding of the limiting block 511. After sliding it to the designated position, release the simple handle 526. Under the elastic force of the second elastic element 524, the mounting plate 522 engages with the mounting plate 522, and the pin 523 is inserted into the positioning hole 513, thus completing the fixation of the brush holder 32.

[0060] Reference Figures 1-8 The mounting base 31 has a slide groove 525, and the positioning block 521 is slidably installed in the slide groove 525; the mounting base 31 is provided with an adjustment component 53 for controlling the positioning block 521 to slide along the slide groove 525.

[0061] This invention achieves flexible adjustment of the position of the metal brush bristles 33 through the sliding groove 525 and the adjusting component 53, thereby maintaining stable contact between the metal brush bristles 33 and the copper ring 22. When maintaining the CT slip ring, it is necessary to adjust the position of the metal brush bristles 33 so that the end of the metal brush bristles 33 is in stable contact with the copper ring 22, thereby stabilizing the resistance of the brush bristles. After the brush holder 32 is installed, the operator controls the positioning block 521 to slide along the sliding groove 525 through the adjusting component 53, thereby driving the brush holder 32 and the metal brush bristles 33 to move, so that the end of the metal brush bristles 33 is in tight contact with the copper ring 22.

[0062] Reference Figures 4-9 The adjusting assembly 53 includes a screw 531 and a rotating handle 532; the screw 531 is rotatably mounted on the mounting base 31 and is threadedly connected to the positioning block 521; the rotating handle 532 is fixedly sleeved on the end of the screw 531 away from the mounting base 31.

[0063] The present invention realizes the function of adjusting the position of the positioning block 521 through the screw 531 and the rotating handle 532. After the brush holder 32 is installed, the position of the metal brush bristles 33 needs to be adjusted so that they cooperate with the copper ring 22. The operator rotates the rotating handle 532, which drives the screw 531 to rotate. The screw 531 drives the positioning block 521, which is threadedly connected to it, to slide along the slide groove 525. The positioning block 521 drives the limiting block 511 and the brush holder 32 to move synchronously.

[0064] Reference Figures 6-9 The CT slip ring also includes a protective structure 6, which includes a cover plate 61 and a limiting plate 62. The cover plate 61 is rotatably mounted on the mounting frame by a torsion spring. The limiting plate 62 is mounted on the mounting frame and is located at the end of the slide rail 512.

[0065] This invention uses a cover plate 61 and a limiting plate 62 to prevent the CT slip ring from detaching from the mounting base 31 during use. The cover plate 61 is pressed against the limiting plate 62 by the force of a torsion spring. When installing the brush holder 32, the operator directly pushes the limiting block 511 on the brush holder 32 into the slide rail 512. As the limiting block 511 presses against the torsion spring, it overcomes the force of the torsion spring and drives the cover plate 61 to rotate. After the limiting block 511 moves a certain distance, the cover plate 61, under the force of the torsion spring, presses against the limiting block 511 again. In the CT slip ring, even if the pin 523 breaks during use, the brush bristles will not fall off the slide rail 512 under the restriction of the cover plate 61. When disassembling the brush holder 32, the operator first pulls the simple handle 526 to separate the pin 523 from the positioning hole 513. Then, the brush holder 32 is moved a distance to make the positioning hole 513 and the pin 523 misaligned. Then, the two cover plates 61 are pushed to overcome the elasticity of the torsion spring and make the cover plates 61 stick tightly to the limiting plate 62, making room for the brush holder 32 to slide out along the slide groove 525.

[0066] Reference Figures 1-9 The metal brush bristles 33 are composed of fine metal filaments with a diameter of less than 0.08 mm.

[0067] This invention achieves the function of stabilizing the resistance value of the metal brush 33 by composing a metal brush 33 with several metal filaments. Each bundle of metal brush 33 consists of hundreds or thousands of metal filaments. When installing the metal brush 33, the operator first straightens the metal filaments with a diameter of less than 0.08 mm and then divides them into equal lengths. Then, a certain number of metal filaments are inserted into the copper tube 42 with a shoulder 421, adjusted neatly, and pressed and fixed to complete the installation of the technical brush filaments. By breaking down the whole into parts, the number of contact points is increased and the overall flexibility is improved, further enhancing the performance of the CT slip ring.

[0068] Reference Figures 1-9 The metal brush filament 33 is perpendicular to the surface of the copper ring 22.

[0069] This invention achieves stable engagement between the metal brush 33 and the copper ring 22 even when the copper ring 22 rotates in both directions by aligning the metal brush 33 perpendicularly to the copper ring 22. To further improve the stable engagement between the metal brush 33 and the copper ring 22, the metal brush 33 is aligned perpendicularly to the copper ring 22, so that the frictional force on the metal brush 33 does not change significantly when the copper ring 22 rotates in both directions, thereby improving the rotational flexibility of the slip ring.

[0070] Reference Figures 1-9 The end of the metal brush filament 33 that contacts the copper ring 22 is coated with a nickel-phosphorus alloy.

[0071] This invention improves the service life of metal brush filaments 33 through a nickel-phosphorus alloy coating. The nickel-phosphorus alloy coating has good corrosion resistance, high temperature resistance, and wear resistance, as well as high electrical conductivity and magnetic permeability. It has low raw material cost and good environmental performance. By electroplating the ends of the metal brush filaments 33 with nickel-phosphorus alloy, the wear resistance of the metal brush filaments 33 can be further improved, the service life of the metal brush filaments 33 can be further improved, and maintenance costs can be reduced.

[0072] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. An easy-to-disassemble vertical brush type metal filament CT slip ring, comprising a frame (1), a rotor structure (2) and a stator structure (3). The rotor structure (2) includes a disc body (21) and a copper ring (22), with the copper ring (22) mounted on the disc body (21); Its features are, The stator structure (3) includes a mounting base (31), a brush holder (32), metal brush filaments (33), and a wire (34); The mounting base (31) is mounted on the frame (1); the brush holder (32) is mounted on the mounting base (31); Metal bristles (33) are mounted on the brush holder (32), and one end of the metal bristles (33) close to the copper ring (22) is in close contact with the copper ring (22); The end of the metal bristles (33) away from the copper ring (22) is connected to the wire (34), and the wire (34) extends through the brush holder (32) to the outside of the brush holder (32); The CT slip ring also includes a mounting structure (5), which includes a guide assembly (51) and a fixing assembly (52). The guide assembly (51) includes a limiting block (511), which is fixedly mounted on the brush holder (32); The mounting base (31) is provided with a slide rail (512), and the brush holder (32) is slidably mounted on the slide rail (512) by means of a limiting block (511); The fixing component (52) is mounted on the mounting base (31) and is used to fix the brush holder (32); The fixing component (52) includes a positioning block (521), a mounting plate (522), a pin (523), and a second elastic element (524); The positioning block (521) is installed on the mounting base (31); The pin (523) is installed on the mounting plate (522). The pin (523) slides with the positioning block (521). The limiting block (511) has a positioning hole (513) that mates with the pin (523). The two ends of the second elastic element (524) are fixedly connected to the mounting plate (522) and the positioning block (521) respectively; The mounting base (31) has a groove (525) and the positioning block (521) is slidably installed in the groove (525); The mounting base (31) is provided with an adjustment component (53) for controlling the positioning block (521) to slide along the slide groove (525); The adjustment assembly (53) includes a screw (531) and a rotary handle (532); The screw (531) is rotatably mounted on the mounting base (31), and the screw (531) is threadedly connected to the positioning block (521); The rotating handle (532) is fixedly sleeved on the end of the screw (531) away from the mounting base (31).

2. The easily detachable vertical brush type metal filament CT slip ring according to claim 1, characterized in that, The CT slip ring also includes a clamping structure (4), which includes an insulating seat (41), a copper tube (42), and a first elastic element (43). An insulating base (41) is mounted on a brush holder (32); The copper tube (42) is sleeved on the metal brush filament (33) and is located inside the brush holder (32). The metal brush filament (33) extends through the insulating base (41) into the brush holder (32). A shoulder (421) is installed on the copper tube (42), and the two ends of the first elastic element (43) are fixedly connected to the shoulder (421) and the brush holder (32) respectively.

3. The easily detachable vertical brush type metal filament CT slip ring according to claim 1, characterized in that, The CT slip ring also includes a protective structure (6), which includes a cover plate (61) and a limiting plate (62). The cover plate (61) is rotatably mounted on the mounting bracket by a torsion spring; The limiting plate (62) is mounted on the mounting bracket and the limiting plate (62) is located at the end of the slide rail (512).

4. A vertical brush type metal filament CT slip ring that is easy to assemble and disassemble according to any one of claims 1-3, characterized in that, The metal brush bristles (33) are composed of fine metal wires with a diameter of less than 0.08 mm.

5. A vertical brush type metal filament CT slip ring that is easy to assemble and disassemble according to any one of claims 1-3, characterized in that, The metal bristles (33) are perpendicular to the surface of the copper ring (22).

6. A vertical brush type metal filament CT slip ring that is easy to assemble and disassemble according to any one of claims 1-3, characterized in that, The end of the metal brush filament (33) that contacts the copper ring (22) is provided with a nickel-phosphorus alloy plating.

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