Superconducting permanent magnet sheet shuttle for magnetic levitation weft insertion and its cooling device

Abstract

An ultraconductive permanent magnetic piece shuttle for magnetic suspension weft insertion, comprising a shuttle body and a Dewar container, permanent magnetic arrays symmetrically installed on both sides of the shuttle body to interact with traveling wave magnetic field to realize piece shuttle weft insertion movement, a weft gripper installed inside the shuttle body to grip weft, the bottom of the shuttle body connected with the top of the Dewar container, the Dewar container filled with liquid nitrogen, the bottom of the Dewar container inserted with an ultraconductor to interact with permanent magnetic array track to realize piece shuttle suspension, the ultraconductor in contact with the liquid nitrogen, and through holes provided on the Dewar container to inject liquid nitrogen and discharge liquid nitrogen volatile gas. The design not only makes the speed of the piece shuttle controllable, but also improves the application range of the piece shuttle weft insertion.

Description

Technical Field

[0001] This invention relates to the field of textile equipment technology, and in particular to a superconducting permanent magnet shuttle for magnetic levitation weft insertion and its cooling device. Background Technology

[0002] In existing electromagnetic weft insertion technologies, the shuttle is mostly made of non-magnetic metallic conductors. In an alternating magnetic field, the shuttle first generates an induced current, then a magnetic field. The shuttle then interacts with an external electromagnetic coil, achieving drive, braking, and levitation. However, this process involves complex calculations and control. The strength of the magnetic field generated by the shuttle cannot be directly obtained; it requires calculations involving two conversions: magnetization to electricity and electricity to magnetization. First, the induced current generated by the shuttle in the alternating magnetic field is calculated, involving changes in the magnetic field and the shuttle's speed. Then, the induced magnetic field is calculated from the induced current to obtain the strength of the magnetic field. This calculation process is complex and lacks precision, making the shuttle speed uncontrollable. Furthermore, the shuttle is still driven on a track. While this solves the problems of high impact and noise associated with traditional torsion shaft projection, friction still exists during drive, limiting the applicability of shuttle weft insertion. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects and problems of uncontrollable shuttle speed and narrow application range of shuttle weft insertion in the prior art, and to provide a superconducting permanent magnet shuttle and its cooling device for magnetic levitation weft insertion with controllable shuttle speed and wide application range.

[0004] To achieve the above objectives, the technical solution of the present invention is: a superconducting permanent magnet shuttle for magnetic levitation weft insertion, comprising a shuttle body and a Dewar container. A permanent magnet array is symmetrically installed on both sides of the shuttle body, interacting with a traveling wave magnetic field to achieve the weft insertion motion of the shuttle. A weft clamp for holding the weft thread is installed inside the shuttle body. The bottom of the shuttle body is connected to the top of the Dewar container, which is filled with liquid nitrogen. A superconductor that interacts with the permanent magnet array track to achieve shuttle levitation is inserted into the bottom of the Dewar container. The superconductor is in contact with the liquid nitrogen. A through-hole is provided on the Dewar container for injecting liquid nitrogen and discharging liquid nitrogen vapors.

[0005] The shuttle body includes a shuttle body and a shuttle head. A through cavity is formed in the middle of the shuttle body along its length. The weft clamp is installed in the through cavity. A first mounting slot is symmetrically formed on both sides of the through cavity on the shuttle body. The permanent magnet array is installed in the first mounting slot. The shuttle head is inserted into one end of the through cavity. The other end of the through cavity is used for the weft thread to pass through and be clamped by the weft clamp.

[0006] The shuttle body includes an upper shuttle body and a lower shuttle body arranged symmetrically. The lower end face of the upper shuttle body has a first through groove, and the upper end face of the lower shuttle body has a second through groove. The second through groove and the first through groove form the through cavity. The gap between the two sides of the upper shuttle body and the two sides of the lower shuttle body forms a first mounting groove.

[0007] An upper mounting groove is formed on the lower end face of the upper shuttle body at the position on both sides of the first through groove, and a lower mounting groove is formed on the upper end face of the lower shuttle body at the position on both sides of the second through groove. The lower mounting groove and the upper mounting groove together form the second mounting groove, and a magnetic shielding block is installed in the second mounting groove.

[0008] The upper end face of the upper shuttle body and the lower end face of the lower shuttle body are both provided with rivet holes, and the upper shuttle body, the lower shuttle body, and the weft clamp are connected to each other through the rivet holes.

[0009] Both the upper end face of the upper shuttle body and the lower end face of the lower shuttle body are provided with round holes, which are used to insert the tapered rod that opens the weft clamp.

[0010] The Dewar container includes a Dewar top cover and a Dewar container body. The lower end face of the Dewar container body has a mounting through hole, and the superconductor is installed in the mounting through hole. The through hole is also provided on the side wall of the Dewar container body.

[0011] The superconductor has a cylindrical structure. A blind hole is provided on the lower end face of the Dewar cover. The mounting through hole includes a first mounting hole and a second mounting hole that are connected. The diameter of the first mounting hole is larger than the diameter of the second mounting hole. One end of the superconductor is installed in the blind hole, and the other end of the superconductor is installed in the first mounting hole.

[0012] A cooling device for a superconducting permanent magnet shuttle used for magnetic levitation weft insertion, the cooling device comprising a first synchronous belt, a second synchronous belt, and a three-axis moving chuck, the first synchronous belt being located above and to the side of the second synchronous belt, a connecting plate being provided between the first and second synchronous belts, a liquid nitrogen pool matching a Dewar container being provided in the middle of the second synchronous belt, and the three-axis moving chuck being used to place the shuttle on the first synchronous belt and remove the shuttle from the second synchronous belt.

[0013] A cooling device for a superconducting permanent magnet shuttle used for magnetic levitation weft insertion includes multiple primary columns, multiple secondary columns, a liquid nitrogen pool matched with the superconductor, and a three-axis moving suction cup. The primary columns are symmetrically distributed on both sides of the liquid nitrogen pool, and the secondary columns are symmetrically distributed on both sides of the liquid nitrogen pool, with each secondary column located between two adjacent primary columns. The secondary columns are slidably connected to a support column. Multiple triangular blocks for supporting the shuttle are hinged from top to bottom on the primary and secondary columns. The three-axis moving suction cup is used to place the shuttle on the triangular blocks and remove the shuttle from the triangular blocks.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. This invention discloses a superconducting permanent magnet shuttle for magnetic levitation weft insertion and its cooling device. The bottom of the shuttle body is connected to the top of a Dewar container filled with liquid nitrogen. A superconductor, interacting with a permanent magnet array track to levitate the shuttle, is inserted into the bottom of the Dewar container. The superconductor is in contact with the liquid nitrogen. The Dewar container has through holes for injecting liquid nitrogen and venting volatile gases. The shuttle with this structure is placed directly above the permanent magnet array track. After being cooled by liquid nitrogen, the superconductor enters a superconducting state, achieving stable levitation and ensuring the shuttle remains in a suspended state. Permanent magnet arrays interacting with a traveling wave magnetic field are symmetrically installed on both sides of the shuttle body to achieve weft insertion. By changing the strength of the traveling wave magnetic field, the electromagnetic force between the traveling wave magnetic field and the shuttle is changed, thereby controlling the shuttle speed. Simultaneously, controlling the shuttle speed in the suspended state allows for weft insertion of different fabrics, improving the applicability of the shuttle weft insertion. Therefore, this invention not only makes the shuttle speed controllable but also expands the applicability of the shuttle weft insertion.

[0016] 2. In this invention, a superconducting permanent magnet shuttle for magnetic levitation weft insertion and its cooling device, the shuttle body includes a shuttle body and a shuttle head. A through cavity is formed in the middle of the shuttle body along its length, and a weft clamp is installed in the through cavity. A first mounting slot is symmetrically formed on both sides of the through cavity on the shuttle body, and a permanent magnet array is installed in the first mounting slot. The shuttle head is inserted into one end of the through cavity, and the other end of the through cavity is used for the weft thread to pass through and be clamped by the weft clamp. The shuttle body with the above structure is not only easy to install and disassemble, but also easy to use. The shuttle body includes an upper shuttle body and a lower shuttle body arranged symmetrically, which reduces the manufacturing difficulty of the shuttle. An upper mounting slot is formed on the lower end face of the upper shuttle body on both sides of the first through slot, and a lower mounting slot is formed on the lower end face. The upper end face of the shuttle body has lower mounting grooves on both sides of the second through groove. These lower and upper mounting grooves together form the second mounting groove. Magnetic shielding blocks are installed within the second mounting groove to reduce the mutual influence between magnetic fields, ensuring the permanent magnet array is only affected by the traveling wave magnetic field on one side, reducing the influence of the traveling wave magnetic field on the other side. Rivet holes are provided on the upper end face of the upper shuttle body and the lower end face of the lower shuttle body. The upper shuttle body, lower shuttle body, and weft clamp are interconnected through these rivet holes, simplifying installation and disassembly and improving connection reliability. Circular holes are also provided on the upper end face of the upper shuttle body and the lower end face of the lower shuttle body. During use, inserting a conical rod into the circular hole opens the weft clamp. Therefore, this invention is easy to install and disassemble, convenient to use, easy to manufacture, and highly reliable.

[0017] 3. In the superconducting permanent magnet shuttle and its cooling device for magnetic levitation weft insertion of the present invention, a blind hole is formed on the lower end face of the Dewar cover, and a mounting through hole is formed on the lower end face of the Dewar container body. The mounting through hole includes a first mounting hole and a second mounting hole that are connected. One end of the superconductor is installed in the blind hole, and the other end of the superconductor is installed in the first mounting hole. The above design makes the installation and disassembly of the superconductor simple and has high installation reliability. A through hole is formed on the side wall of the Dewar container body to provide liquid nitrogen to the inside of the Dewar container, ensuring that the superconductor remains in a superconducting state in liquid nitrogen. Therefore, the present invention is simple to install and disassemble, has high installation reliability, and is convenient to use.

[0018] 4. In this invention, a superconducting permanent magnet shuttle for magnetic levitation weft insertion and its cooling device are provided. A first synchronous belt is located above and to the side of a second synchronous belt. A connecting plate is provided between the first and second synchronous belts. A liquid nitrogen pool matching a Dewar container is located in the middle of the second synchronous belt. In use, a three-axis moving chuck places the shuttle on the first synchronous belt. The first synchronous belt moves the shuttle to the second synchronous belt. During the movement of the shuttle by the second synchronous belt, the Dewar container is immersed in the liquid nitrogen pool to replenish liquid nitrogen. Afterward, the three-axis moving chuck removes the shuttle from the second synchronous belt. Therefore, this invention has good cooling effect and is easy to operate.

[0019] 5. In this invention, a superconducting permanent magnet shuttle for magnetic levitation weft insertion and its cooling device are provided. Multiple primary columns are symmetrically distributed on both sides of a liquid nitrogen pool, and multiple secondary columns are also symmetrically distributed on both sides of the liquid nitrogen pool. The secondary columns are located between adjacent primary columns and are slidably connected to support columns. Multiple triangular blocks for supporting the shuttle are hinged from top to bottom on the primary and secondary columns. In use, the shuttle is first placed on the triangular blocks of the secondary columns using a three-axis chuck. The secondary columns then move the shuttle downwards to immerse the Dewar container in the liquid nitrogen pool to replenish the nitrogen. Next, the secondary columns move the shuttle upwards so that it is supported by the triangular blocks on the primary columns. Finally, the shuttle is removed from the triangular blocks using the three-axis chuck. Therefore, this invention provides good cooling and is easy to operate. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the shuttle from one perspective of the present invention.

[0021] Figure 2 This is a three-dimensional structural diagram of the shuttle from another perspective of the present invention.

[0022] Figure 3 This is a schematic diagram of the shuttle body structure in this invention.

[0023] Figure 4 This is a schematic diagram of the upper and lower shuttle bodies in this invention.

[0024] Figure 5 This is a schematic diagram of the internal structure of the shuttle in this invention.

[0025] Figure 6 This is a schematic diagram of the Dewar container in this invention.

[0026] Figure 7 This is a cross-sectional view of the Dewar container in this invention.

[0027] Figure 8 This is a schematic diagram of the use of the shuttle and cooling device in Embodiment 4 of the present invention.

[0028] Figure 9 This is a schematic diagram of the latitude track in Embodiment 4 of the present invention.

[0029] Figure 10 This is a schematic diagram of the usage state of the shuttle in Embodiment 4 of the present invention.

[0030] Figure 11 This is a schematic diagram of the cooling device in Embodiment 4 of the present invention.

[0031] Figure 12 This is a schematic diagram of the use of the shuttle and cooling device in Embodiment 5 of the present invention.

[0032] Figure 13 This is a three-dimensional structural diagram of the cooling device in Embodiment 5 of the present invention from one perspective.

[0033] Figure 14 This is a three-dimensional structural schematic diagram of the cooling device in Embodiment 5 of the present invention from another perspective.

[0034] Figure 15 This is a schematic diagram of the installation structure of the triangular block in Embodiment 5 of the present invention.

[0035] In the diagram: 1. Shuttle 101, Shuttle Body 101, Dewar Container 102, Permanent Magnet Array 103, Weft Clip 104, Superconductor 105, Through Hole 106, Shuttle Body 107, Shuttle Head 108, Through-Cavity 109, Mounting Slot 110, Upper Shuttle Body 111, Lower Shuttle Body 112, Through-Slot 113, Through-Slot 2 114, Upper Mounting Slot 115, Lower Mounting Slot 116, Mounting Slot 2 117, Magnetic Block 118, Rivet Hole 119. 120. Circular hole; 121. Dewar cover; 122. Dewar container body; 123. Second mounting hole; 2. Cooling device; 201. First synchronous belt; 202. Second synchronous belt; 203. Three-axis moving suction cup; 204. Liquid nitrogen pool; 205. First column; 206. Second column; 207. Support column; 208. Triangular block; 209. Connecting plate; 3. Latitude track; 301. Permanent magnet array track; 302. Electromagnetic coil array track; 4. Latitude line; 5. Longitude line. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] See Figures 1 to 15 A superconducting permanent magnet shuttle for magnetic levitation weft insertion includes a shuttle body 101 and a Dewar container 102. Permanent magnet arrays 103, which interact with traveling wave magnetic fields to achieve weft insertion motion of the shuttle 1, are symmetrically installed on both sides of the shuttle body 101. Weft clamps 104 for holding the weft threads 4 are installed inside the shuttle body 101. The bottom of the shuttle body 101 is connected to the top of the Dewar container 102, which is filled with liquid nitrogen. A superconductor 105, which interacts with the permanent magnet array track 301 to levitate the shuttle 1, is inserted into the bottom of the Dewar container 102. The superconductor 105 is in contact with the liquid nitrogen. A through-hole 106 is provided on the Dewar container 102 for injecting liquid nitrogen and discharging liquid nitrogen vapors.

[0038] The shuttle body 101 includes a shuttle body 107 and a shuttle head 108. A through cavity 109 is formed in the middle of the shuttle body 107 along its length. The weft clamp 104 is installed in the through cavity 109. A first mounting slot 110 is symmetrically formed on both sides of the through cavity 109 on the shuttle body 107. The permanent magnet array 103 is installed in the first mounting slot 110. The shuttle head 108 is inserted into one end of the through cavity 109. The other end of the through cavity 109 is used for the weft thread 4 to pass through and be clamped by the weft clamp 104.

[0039] The shuttle body 107 includes an upper shuttle body 111 and a lower shuttle body 112 arranged symmetrically. The lower end face of the upper shuttle body 111 is provided with a first through groove 113, and the upper end face of the lower shuttle body 112 is provided with a second through groove 114. The second through groove 114 and the first through groove 113 constitute the through cavity 109. The gap between the two sides of the upper shuttle body 111 and the two sides of the lower shuttle body 112 constitutes a first mounting groove 110.

[0040] An upper mounting groove 115 is provided on the lower end surface of the upper shuttle body 111 at the position on both sides of the first through groove 113. A lower mounting groove 116 is provided on the upper end surface of the lower shuttle body 112 at the position on both sides of the second through groove 114. The lower mounting groove 116 and the upper mounting groove 115 constitute a second mounting groove 117. A magnetic shielding block 118 is installed in the second mounting groove 117.

[0041] The upper end face of the upper shuttle body 111 and the lower end face of the lower shuttle body 112 are provided with rivet holes 119. The upper shuttle body 111, the lower shuttle body 112 and the weft clamp 104 are connected to each other through the rivet holes 119.

[0042] The upper end face of the upper shuttle body 111 and the lower end face of the lower shuttle body 112 are both provided with round holes 120, which are used to insert the tapered rod that opens the weft clamp 104.

[0043] The Dewar container 102 includes a Dewar top cover 121 and a Dewar container body 122. The lower end face of the Dewar container body 122 is provided with a mounting through hole, and the superconductor 105 is installed in the mounting through hole. The through hole 106 is provided on the side wall of the Dewar container body 122.

[0044] The superconductor 105 has a cylindrical structure. The lower end face of the Dewar cover 121 has a blind hole. The mounting through hole includes a first mounting hole and a second mounting hole 123 that are connected. The diameter of the first mounting hole is larger than the diameter of the second mounting hole 123. One end of the superconductor 105 is installed in the blind hole, and the other end of the superconductor 105 is installed in the first mounting hole.

[0045] A cooling device for a superconducting permanent magnet shuttle for magnetic levitation weft insertion, the cooling device 2 includes a first synchronous belt 201, a second synchronous belt 202 and a three-axis moving suction cup 203. The first synchronous belt 201 is located above and to the side of the second synchronous belt 202. A connecting plate 209 is provided between the first synchronous belt 201 and the second synchronous belt 202. A liquid nitrogen pool 204 matching a Dewar container 102 is provided in the middle of the second synchronous belt 202. The three-axis moving suction cup 203 is used to place the shuttle 1 on the first synchronous belt 201 and to remove the shuttle 1 from the second synchronous belt 202.

[0046] A cooling device for a superconducting permanent magnet shuttle for magnetic levitation weft insertion is provided. The cooling device 2 includes multiple first columns 205, multiple second columns 206, a liquid nitrogen pool 204 matching the superconductor 105, and a three-axis moving suction cup 203. The multiple first columns 205 are symmetrically distributed on both sides of the liquid nitrogen pool 204, and the multiple second columns 206 are symmetrically distributed on both sides of the liquid nitrogen pool 204. The second columns 206 are located between two adjacent first columns 205. The second columns 206 are slidably connected to a support column 207. Multiple triangular blocks 208 for supporting the shuttle 1 are hinged from top to bottom on the first columns 205 and the second columns 206. The three-axis moving suction cup 203 is used to place the shuttle 1 on the triangular blocks 208 and remove the shuttle 1 from the triangular blocks 208.

[0047] The principle of this invention is explained as follows:

[0048] The shuttle designed in this invention allows the entire weft insertion process, including shuttle throwing, weft insertion, and shuttle control, to be completed during suspension, eliminating the friction between the shuttle and the track during shuttle throwing in other solutions. Furthermore, the shuttle in this invention has permanent magnet arrays on both sides. When the shuttle is in a traveling wave magnetic field, the interaction between the permanent magnet arrays and the traveling wave magnetic field provides the shuttle with a forward thrust, and can also act in the opposite direction to brake when weft insertion is about to be completed. The driving and braking processes of the shuttle do not require complex control, and the electromagnetic force on the shuttle does not need to undergo complex conversion calculations. It is only necessary to calculate the magnitude of the magnetic field strength generated by the electromagnetic coil based on the current, and then calculate the electromagnetic force between the electromagnetic coil and the permanent magnet on the shuttle.

[0049] The bottom of the shuttle features an array of YBCO (yttrium barium copper oxide) superconductors. The unique pinning effect of superconductors allows them to lock magnetic flux lines inside the superconductor when cooled in a magnetic field. This characteristic ensures stable vertical and lateral levitation of the superconductor on the permanent magnet array track. After being placed in a magnetic field and cooled with liquid nitrogen, the superconductor enters a superconducting state. Due to the numerous pinning centers inside, the magnetic field inside the superconductor differs slightly from before cooling, but the external magnetic field remains largely unaffected. In other words, as long as there is no relative motion between the superconductor and the permanent magnet, the superconductor will not be affected by magnetic force. If the superconductor is released, it will move towards the permanent magnet under the influence of gravity. At this point, the interaction between the superconductor and the permanent magnet is a repulsive force, preventing it from moving towards the permanent magnet, until the repulsive force and gravity equalize, reaching an equilibrium position and achieving vertical levitation. When the shuttle motion deviates laterally, the magnetic field of the superconductor below also deviates. Due to the magnetic flux pinning property of the superconductor, the magnetic flux lines are bound inside the superconductor, hindering the change of the magnetic flux lines. Macroscopically, this becomes a constraint force opposite to the direction of the superconductor's deflection, which hinders the lateral deflection of the superconductor, thereby achieving the stable levitation of the superconductor.

[0050] Example 1:

[0051] See Figure 1 , Figure 2 , Figure 5 , Figure 6 A superconducting permanent magnet shuttle for magnetic levitation weft insertion includes a shuttle body 101 and a Dewar container 102. Permanent magnet arrays 103, which interact with traveling wave magnetic fields to achieve weft insertion motion of the shuttle 1, are symmetrically installed on both sides of the shuttle body 101. Weft clamps 104 for holding the weft threads 4 are installed inside the shuttle body 101. The bottom of the shuttle body 101 is connected to the top of the Dewar container 102, which is filled with liquid nitrogen. A superconductor 105, which interacts with the permanent magnet array track 301 to levitate the shuttle 1, is inserted into the bottom of the Dewar container 102. The superconductor 105 is in contact with the liquid nitrogen. A through-hole 106 is provided on the Dewar container 102 for injecting liquid nitrogen and discharging liquid nitrogen vapors.

[0052] Example 2:

[0053] The basic content is the same as in Example 1, except that:

[0054] See Figures 1 to 5The shuttle body 101 includes a shuttle body 107 and a shuttle head 108. A through cavity 109 is formed along the length of the middle of the shuttle body 107, and the weft clamp 104 is installed inside the through cavity 109. A first mounting slot 110 is symmetrically formed on both sides of the through cavity 109 on the shuttle body 107, and the permanent magnet array 103 is installed inside the first mounting slot 110. The shuttle head 108 is inserted into one end of the through cavity 109, and the other end of the through cavity 109 is used for the weft thread 4 to pass through and be clamped by the weft clamp 104. The shuttle body 107 includes an upper shuttle body 111 and a lower shuttle body 112 symmetrically arranged. A first through slot 113 is formed on the lower end face of the upper shuttle body 111, and a second through slot 114 is formed on the upper end face of the lower shuttle body 112. The second through slot 114 and the first through slot 113 constitute the through cavity 109. The two sides of the upper shuttle body 111... The gap between the side surface and the two sides of the lower shuttle body 112 forms the first mounting groove 110; an upper mounting groove 115 is formed on the lower end surface of the upper shuttle body 111 at the position on both sides of the first through groove 113, and a lower mounting groove 116 is formed on the upper end surface of the lower shuttle body 112 at the position on both sides of the second through groove 114. The lower mounting groove 116 and the upper mounting groove 115 form the second mounting groove 117. 7 is equipped with a magnetic shielding block 118; the upper end face of the upper shuttle body 111 and the lower end face of the lower shuttle body 112 are both provided with rivet holes 119, and the upper shuttle body 111, the lower shuttle body 112 and the weft clamp 104 are connected to each other through the rivet holes 119; the upper end face of the upper shuttle body 111 and the lower end face of the lower shuttle body 112 are both provided with round holes 120, and the round holes 120 are used to insert the tapered rod that opens the weft clamp 104.

[0055] Example 3:

[0056] The basic content is the same as in Example 1, except that:

[0057] See Figure 1 , Figure 2 , Figure 6 , Figure 7 The Dewar container 102 includes a Dewar top cover 121 and a Dewar container body 122. The lower end face of the Dewar container body 122 has a mounting through hole, and the superconductor 105 is installed in the mounting through hole. The through hole 106 is provided on the side wall of the Dewar container body 122. The superconductor 105 has a cylindrical structure. The lower end face of the Dewar top cover 121 has a blind hole. The mounting through hole includes a first mounting hole and a second mounting hole 123 that are connected. The diameter of the first mounting hole is larger than the diameter of the second mounting hole 123. One end of the superconductor 105 is installed in the blind hole, and the other end of the superconductor 105 is installed in the first mounting hole.

[0058] Example 4:

[0059] The basic content is the same as in Example 1, except that:

[0060] See Figures 8 to 11 A cooling device for a superconducting permanent magnet shuttle for magnetic levitation weft insertion is disclosed. The cooling device 2 includes a first synchronous belt 201, a second synchronous belt 202, and a three-axis moving suction cup 203. The first synchronous belt 201 is located above and to the side of the second synchronous belt 202. A connecting plate 209 is provided between the first synchronous belt 201 and the second synchronous belt 202. A liquid nitrogen pool 204 matching a Dewar container 102 is provided in the middle of the second synchronous belt 202. The three-axis moving suction cup 203 is used to place the shuttle 1 on the first synchronous belt 201 and to remove the shuttle 1 from the second synchronous belt 202.

[0061] The weft insertion track 3 includes a permanent magnet array track 301 and an electromagnetic coil array track 302. The coils on the electromagnetic coil array track are grouped in sets of three, each carrying a three-phase alternating current. Each coil in each group carries an alternating current with a 120-degree phase difference. Each coil generates a corresponding magnetic field, and these magnetic fields superimpose to create a traveling wave magnetic field. This traveling wave magnetic field interacts with the permanent magnet array on the shuttle, providing the driving force for the shuttle's movement. The direction of the traveling wave magnetic field is controlled by feedback from the shuttle's position to the current phase. Whenever the shuttle moves forward a distance equal to one magnetic pole, the direction of the traveling wave magnetic field needs to be changed. As the alternating current changes, the traveling wave magnetic field moves horizontally, meaning the magnetic poles on the track change, thus continuously pulling the shuttle forward at an accelerated speed. Controlling the magnitude of the coil current changes the strength of the traveling wave magnetic field, thereby altering the electromagnetic force between the magnetic field and the shuttle, and controlling the shuttle's speed.

[0062] The synchronous belts are staggered, which is equivalent to the shuttle entering the liquid nitrogen pool from above. This method enables the superconductor to be immersed in liquid nitrogen while being transported. Since the liquid nitrogen pool is higher than the superconductor, when the shuttle is transported to the end of the liquid nitrogen pool, the liquid nitrogen pool can also limit the shuttle. The shuttle stops at a fixed position and waits for the three-axis moving chuck to pick up the shuttle and transfer it to the permanent magnet array track 301 for the next weft insertion.

[0063] Example 5:

[0064] The basic content is the same as in Example 1, except that:

[0065] See Figures 12 to 15A cooling device for a superconducting permanent magnet shuttle for magnetic levitation weft insertion is disclosed. The cooling device 2 includes multiple first columns 205, multiple second columns 206, a liquid nitrogen pool 204 matching the superconductor 105, and a three-axis moving suction cup 203. The multiple first columns 205 are symmetrically distributed on both sides of the liquid nitrogen pool 204, and the multiple second columns 206 are symmetrically distributed on both sides of the liquid nitrogen pool 204. The second columns 206 are located between two adjacent first columns 205. The second columns 206 are slidably connected to a support column 207. Multiple triangular blocks 208 for supporting the shuttle 1 are hinged from top to bottom on the first columns 205 and the second columns 206. The three-axis moving suction cup 203 is used to place the shuttle 1 on the triangular blocks 208 and remove the shuttle 1 from the triangular blocks 208.

[0066] A triangular block is mounted on the surface of the column and fixed to the column via a rotating shaft. The triangular block remains convex outwards; under pressure, it can rotate around the shaft and enter the column, and when the force is removed, it will pop out. The triangular block is used to support a series of shuttles. The shuttles are continuously lifted upwards by the up-and-down movement of the column. After the top shuttle is removed by the three-axis moving suction cup, the next top shuttle is lifted to the top to await removal. The shuttles are placed on the triangular block, and the column first moves downwards a certain distance, immersing the Dewar container containing the superconductor below the shuttle into a liquid nitrogen pool. The Dewar container contains material that can absorb liquid nitrogen. After absorbing enough liquid nitrogen to ensure that the superconductor is cooled to the required temperature, the column moves upwards again, lifting the shuttle to the designated position. At this point, all the shuttles are lifted upwards.

Claims

1. A superconducting permanent magnet shuttle for magnetic levitation weft insertion, characterized in that, The device includes a shuttle body (101) and a Dewar container (102). The shuttle body (101) is symmetrically equipped with permanent magnet arrays (103) that interact with the traveling wave magnetic field to achieve the weft insertion motion of the shuttle (1). The shuttle body (101) is equipped with a weft clamp (104) for clamping the weft thread (4). The bottom of the shuttle body (101) is connected to the top of the Dewar container (102). The Dewar container (102) is filled with liquid nitrogen. The bottom of the Dewar container (102) is inserted with a superconductor (105) that interacts with the permanent magnet array track (301) to achieve the levitation of the shuttle (1). The superconductor (105) is in contact with the liquid nitrogen. The Dewar container (102) has a through hole (106) for injecting liquid nitrogen and discharging liquid nitrogen volatile gas. The shuttle body (101) includes a shuttle body (107) and a shuttle head (108). A through cavity (109) is formed in the middle of the shuttle body (107) along its length. The weft clamp (104) is installed in the through cavity (109). A first mounting slot (110) is symmetrically formed on both sides of the through cavity (109) on the shuttle body (107). The permanent magnet array (103) is installed in the first mounting slot (110). The shuttle head (108) is inserted into one end of the through cavity (109). The other end of the through cavity (109) is used for the weft thread (4) to pass through and be clamped by the weft clamp (104). The shuttle body (107) includes an upper shuttle body (111) and a lower shuttle body (112) symmetrically arranged. A first through slot (109) is formed on the lower end face of the upper shuttle body (111). 113), the upper end face of the lower shuttle body (112) is provided with a second through groove (114), the second through groove (114) and the first through groove (113) constitute the through cavity (109), the gap between the two sides of the upper shuttle body (111) and the two sides of the lower shuttle body (112) constitutes a first mounting groove (110); the lower end face of the upper shuttle body (111) is provided with an upper mounting groove (115) located on both sides of the first through groove (113), the upper end face of the lower shuttle body (112) is provided with a lower mounting groove (116) located on both sides of the second through groove (114), the lower mounting groove (116) and the upper mounting groove (115) constitute a second mounting groove (117), and a magnetic shielding block (118) is installed in the second mounting groove (117); The Dewar container (102) includes a Dewar top cover (121) and a Dewar container body (122). The lower end face of the Dewar container body (122) is provided with a mounting through hole, and the superconductor (105) is installed in the mounting through hole. The through hole (106) is provided on the side wall of the Dewar container body (122). The superconductor (105) has a cylindrical structure. The lower end face of the Dewar top cover (121) is provided with a blind hole. The mounting through hole includes a first mounting hole and a second mounting hole (123) that are connected. The diameter of the first mounting hole is larger than the diameter of the second mounting hole (123). One end of the superconductor (105) is installed in the blind hole, and the other end of the superconductor (105) is installed in the first mounting hole.

2. A superconducting permanent magnet shuttle for magnetic levitation weft insertion according to claim 1, characterized in that: The upper end face of the upper shuttle body (111) and the lower end face of the lower shuttle body (112) are provided with rivet holes (119), and the upper shuttle body (111), the lower shuttle body (112) and the weft clamp (104) are connected to each other through the rivet holes (119).

3. A superconducting permanent magnet shuttle for magnetic levitation weft insertion according to claim 1, characterized in that: The upper end face of the upper shuttle body (111) and the lower end face of the lower shuttle body (112) are both provided with round holes (120), which are used to insert the conical rod that opens the weft clamp (104).

4. A cooling device for a superconducting permanent magnet shuttle for magnetic levitation weft insertion as described in claim 1, characterized in that: The cooling device (2) includes a first synchronous belt (201), a second synchronous belt (202), and a three-axis moving suction cup (203). The first synchronous belt (201) is located above and to the side of the second synchronous belt (202). A connecting plate (209) is provided between the first synchronous belt (201) and the second synchronous belt (202). A liquid nitrogen pool (204) matching the Dewar container (102) is provided in the middle of the second synchronous belt (202). The three-axis moving suction cup (203) is used to place the shuttle (1) on the first synchronous belt (201) and to remove the shuttle (1) from the second synchronous belt (202).

5. A cooling device for a superconducting permanent magnet shuttle for magnetic levitation weft insertion as described in claim 1, characterized in that: The cooling device (2) includes multiple first-order columns (205), multiple second-order columns (206), a liquid nitrogen pool (204) matching the superconductor (105), and a three-axis moving suction cup (203). The multiple first-order columns (205) are symmetrically distributed on both sides of the liquid nitrogen pool (204), and the multiple second-order columns (206) are symmetrically distributed on both sides of the liquid nitrogen pool (204), with the second-order columns (206) located adjacent to each other. Between the two No. 1 columns (205), the No. 2 column (206) is slidably connected to the support column (207). Multiple triangular blocks (208) for carrying the shuttle (1) are hinged from top to bottom on the No. 1 column (205) and the No. 2 column (206). The three-axis moving suction cup (203) is used to place the shuttle (1) on the triangular blocks (208) and to remove the shuttle (1) from the triangular blocks (208).

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