Rotary die holder device for suspension catenary single-strand machine stranding superconducting cable

Abstract

The utility model relates to superconducting cable stranding technical field discloses a kind of rotary die holder devices for cantilever single stranding machine stranding superconducting cable, it is composed of base, support, support seat, die holder, parallel line die, deep groove ball bearing, thrust ball bearing and fastener;Deep groove ball bearing and thrust ball bearing are sequentially loaded in support seat, die holder small end and two bearing inner ring transition fit, large end inner hole clearance fit parallel line die, and lock by using internal hexagon screw;Die holder small end shaft head is isolated with round nut compression, realize bearing inner ring axial positioning;Base is provided with key groove, the position of device on machine body can be integrally adjusted.When stranding, each superconducting monofilament drives parallel line die, die holder and bearing inner ring synchronous rotation, change traditional sliding friction into rolling friction, significantly reduce the wear between monofilament and parallel line die and between monofilament, prevent cable surface scratch, improve superconducting material utilization, reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of superconducting cable stranding technology, and in particular to a rotating mold base device for stranding superconducting cables using a cantilever single stranding machine. Background Technology

[0002] Superconducting cables are a high-efficiency energy transmission technology that utilizes the zero-resistance characteristic of superconducting materials at low temperatures to transmit electricity. During the stranding of superconducting cables with large pitch and high linear speed on a cantilevered single-strand strander, multiple superconducting monofilaments (such as Nb3Sn or NbTi) rub against each other as they pass through the inner hole of the stranding die in the fixed die base. Even with a well-designed cooling and lubrication device installed on the fixed die base, significant scratches and wear still occur on the surface of the stranded superconducting cable, failing to meet the technical specifications for superconducting cables. This results in a serious waste of superconducting materials and undoubtedly increases the cost of stranding superconducting cables.

[0003] How to design a reliable rotating die holder device at the narrow cantilever single twisting machine for installing and paralleling superconducting cables, in order to reduce the mutual friction between multiple superconducting monofilaments and the inner hole of the paralleling die passing through the die holder device, as well as the friction generated when multiple superconducting monofilaments come into contact with each other, so that the surface of the twisted superconducting cable is free from obvious scratches and wear and meets the technical specifications of superconducting cables, has always been a difficult problem that has troubled those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a rotating mold base device for stranding superconducting cables using a cantilever single twister, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A rotating mold base device for stranding superconducting cables using a cantilever single twister includes: The base has two keyways along the direction of travel of the multiple superconducting wires; The bracket is fixedly connected to the base; The support base, which is fixedly connected to the bracket, has three inner holes arranged coaxially in sequence: inner hole one, inner hole two, inner hole three, and inner hole four. A deep groove ball bearing, wherein the outer ring is transitionally fitted with the inner bore one, and the end face of the outer ring is limited by the inner bore two; A thrust ball bearing, wherein the raceway is fitted with the inner bore in a transition fit. The mold base has a small end and a large end. The outer diameter of the small end is transitionally fitted with the inner ring of the deep groove ball bearing and the shaft ring of the thrust ball bearing, and is machined with external threads. The large end has a large inner hole and at least two threaded holes. The parallel die is installed in the large inner hole with a clearance fit. A round nut is connected to the external thread; An isolation sleeve is fitted onto the small end and pressed tightly onto the inner ring of the deep groove ball bearing by the round nut, thereby achieving axial positioning of the inner ring. A hex socket head cap screw a is threaded into the screw hole and used to fasten the parallel die to the large inner hole; A hex socket head cap screw b passes through the keyway and is threaded into the machine body to adjustably and secure the base to the machine body; During the stranding process, each individual superconducting wire drives the parallel die, die base, round nut, and isolation sleeve to rotate together relative to the support base.

[0006] The support base is welded to the bracket and has the same width; the bracket is welded to the base.

[0007] The diameter of the small inner hole at the small end is larger than the outer diameter of the multi-strand superconducting wire to prevent the superconducting wire from being scratched during the power-on process.

[0008] The support base has at least two through holes in the circumferential direction of the convex surface formed by the inner hole two, inner hole three and inner hole four, for disassembling the thrust ball bearing seat ring.

[0009] A flat washer is provided between the base and the body, and the internal hexagonal head screw b passes through the inner hole of the flat washer and is threaded to the body.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: This utility model has a simple structure, is easy to manufacture, and is convenient to install and use. It has the advantages of being easy to promote and install. By using this utility model, the mutual friction between multiple superconducting monofilaments and the inner hole of the wire-threading die through the die holder device, as well as the friction generated when multiple superconducting monofilaments come into contact with each other, can be effectively reduced. This results in no obvious scratches or wear on the surface of the stranded superconducting cable, meeting the technical specifications of superconducting cables, further improving the utilization rate of superconducting materials, and effectively reducing the manufacturing cost of superconducting cables. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the structure connecting the bracket, support base and base in this utility model.

[0013] Figure 3 This is a schematic diagram of the structure of the mold base in this utility model.

[0014] Attached Figures and Their Names: 1. Body; 2. Base; 2.1. Keyway; 3. Flat Washer; 4. Bracket; 5. Round Nut; 6. Multi-strand Superconducting Wire; 7. Isolation Sleeve; 8. Deep Groove Ball Bearing; 9. Support Seat; 9.1. Inner Hole 1; 9.2. Inner Hole 2; 9.3. Inner Hole 3; 9.4. Inner Hole 4; 10. Thrust Ball Bearing; 11. Mold Base; 11.1. Small Inner Hole; 11.2. Small End; 11.2.1. External Thread; 11.3. Large End; 11.3.1. Screw Hole; 11.4. Large Inner Hole; 12. Parallel Wire Mold; 13. Single Superconducting Wire; 14. Socket Head Screw a; 15. Socket Head Screw b. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] like Figure 1-3 As shown, this utility model provides a rotating mold base device for stranding superconducting cables using a cantilever single twister, which consists of a base 2, a flat washer 3, a bracket 4, a round nut 5, an isolation sleeve 7, a deep groove ball bearing 8, a support seat 9, a thrust ball bearing 10, a mold base 11, a hexagon socket head cap screw a14, and a hexagon socket head cap screw b15.

[0018] The inner holes 9.1 and 9.4 of the support seat 9 are respectively fitted with the outer ring of the deep groove ball bearing 8 and the lower ring of the seat ring of the thrust ball bearing 10. The inner hole 9.3 of the support seat 9 is fitted with the outer diameter of the small end 11.2 of the mold base 11. The end face formed by the inner hole 9.2 and the inner hole 9.1 of the support seat 9 provides axial positioning for the outer ring of the deep groove ball bearing 8. The support seat 9 is welded to the bracket 4, and the two have the same width.

[0019] The inner ring of the deep groove ball bearing 8 and the upper ring of the thrust ball bearing 10 are both fitted with the outer diameter of the small end 11.2 of the mold base 11 using a transition fit. The large inner hole 11.4 of the mold base 11 is fitted with the outer diameter of the paralleling mold 12 using a clearance fit, and the width dimensions of the two are the same. Two screw holes 11.3.1 are evenly distributed on the large end 11.3 of the mold base 11. The screw holes 11.3.1 are threadedly connected to the internal hexagon socket head cap screws a14. By tightening the internal hexagon socket head cap screws a14 threaded to the screw holes 11.3.1, the paralleling mold can be connected. The mold 12 is fastened inside the large inner hole 11.4 of the mold base 11; the shaft end of the small end 11.2 of the mold base 11 is machined with an external thread 11.2.1, which is threadedly connected to the round nut 5. By tightening the round nut 5 which is threadedly connected to the external thread 11.2.1, the isolation sleeve 7 can be pressed onto the inner ring of the deep groove ball bearing 8 to axially limit the inner ring of the deep groove ball bearing 8; the outer diameter of the small inner hole 11.1 of the mold base 11 is much larger than the outer diameter of the multi-strand superconducting wire 6 to prevent the traveling multi-strand superconducting wire 6 from being scratched during startup.

[0020] The bracket 4 is welded to the base 2. The base 2 has two keyways 2.1 uniformly machined in the direction of the traveling multi-strand superconducting wire 6, which facilitates the adjustment of the installation position of the rotating mold base device on the machine body 1, so as to reduce the mutual friction between the multiple superconducting single wires and the inner hole of the parallel die 12, and the friction generated when the multiple superconducting single wires come into contact with each other. The keyway 2.1 and the external threads of the hexagon socket head cap screw b15 are clearance fit. By tightening the two hexagon socket head cap screws b15 that pass through the inner hole of the flat washer 3 and are threaded to the machine body, the adjusted rotating mold base device can be fastened to the machine body of the single twister.

[0021] The rotating mold base device, which is fastened to the body of the cantilever single twister, drives the parallel mold 12, flat washer 3, round nut 5 and mold base 11 assembly through the twisted single superconducting wires 13. The assembly rotates within the hole of the support seat 9 through the deep groove ball bearing 8 and thrust ball bearing 10. This can effectively reduce the mutual friction between the multiple superconducting single wires and the inner hole of the parallel mold 12, as well as the friction generated when the multiple superconducting single wires come into contact with each other.

[0022] As a further improvement of this utility model, if two through holes are uniformly machined in the circumferential direction of the inner holes 9.2, 9.3, and 9.4 of the support seat 9 to facilitate the disassembly of the lower ring of the thrust ball bearing 10 seat ring, it will be more convenient to disassemble and replace the lower ring of the thrust ball bearing 10 seat ring from the inner hole 9.4 of the support seat 9, which can further improve the rationality of the disassembly and assembly design of the rotary mold base device.

[0023] The working principle of this utility model is as follows: 1) Based on the installation position dimensions of the fixed mold base and paralleling mold 12 of the cantilever single twister and the machine body 1, as well as the specific dimensions of the fixed mold base, and in conjunction with the above technical solutions, a drawing of a rotating mold base device for stranding superconducting cables using a cantilever single twister is designed.

[0024] 2) Based on the design drawings of a rotating mold base device for stranding superconducting cables using a cantilever single twister, and considering the quantity of the rotating mold base device to be installed, process the base 2, bracket 4, isolation sleeve 7, support seat 9 and mold base 11 that meet the actual requirements, and prepare the required flat washers 3, round nuts 5, deep groove ball bearings 8, thrust ball bearings 10, socket head cap screws a14 and b15.

[0025] 3) Next, according to the drawing requirements of a rotating mold base device for stranding superconducting cables using a cantilever single twister, assemble multiple sets of the rotating mold base device in sequence according to the drawing requirements.

[0026] 4) When the machine is stopped, tighten the internal hexagonal head screws b15 that pass through the inner hole of the flat washer 3 and are threaded to the machine body to secure each set of the rotating mold base device to the appropriate position on the cantilever single twister body.

[0027] 5) At this point, the installation of a rotating mold base device for stranding superconducting cables on each cantilever single twister is completed. After all the preparations for starting the machine are completed, it can be started normally.

Claims

1. A rotating die carrier device for a cantilever single-strand machine for stranding superconducting cables, characterized in that include: The base (2) has two keyways (2.1) along the direction of travel of the multi-strand superconducting wire (6); The bracket (4) is fixedly connected to the base (2); The support base (9) is fixedly connected to the bracket (4) and has inner holes 1 (9.1), 2 (9.2), 3 (9.3) and 4 (9.4) arranged coaxially in sequence. A deep groove ball bearing (8) has an outer ring that transitions into the inner hole one (9.1), and the end face of the outer ring is limited by the inner hole two (9.2); A thrust ball bearing (10) has its seat ring transitionally fitted with the inner bore four (9.4); The mold base (11) has a small end (11.2) and a large end (11.3). The outer diameter of the small end (11.2) is transitionally fitted with the inner ring of the deep groove ball bearing (8) and the shaft ring of the thrust ball bearing (10), and is machined with an external thread (11.2.1). The large end (11.3) has a large inner hole (11.4) and at least two threaded holes (11.3.1). The parallel die (12) is fitted into the large inner hole (11.4) with a clearance fit; A round nut (5) is threaded to the external thread (11.2.1); The isolation sleeve (7) is fitted onto the small end (11.2) and pressed by the round nut (5) onto the inner ring of the deep groove ball bearing (8) to achieve axial positioning of the inner ring; The internal hexagonal head screw a (14) is threaded into the screw hole (11.3.1) to fasten the parallel die (12) to the large inner hole (11.4). The internal hexagonal head screw b (15) passes through the keyway (2.1) and is threaded to the body (1) to adjustably fasten the base (2) to the body (1). During the twisting process, each single superconducting wire (13) drives the parallel die (12), die base (11), round nut (5) and isolation sleeve (7) to rotate together relative to the support base (9).

2. A rotating die carrier apparatus for a cantilever single-strand machine for stranding superconducting cables according to claim 1, characterized in that: The support base (9) is electrically welded to the bracket (4) and has the same width; the bracket (4) is electrically welded to the base (2).

3. A rotating die carrier apparatus for a cantilever single-strand machine for stranding superconducting cables according to claim 1, characterized in that: The small inner hole (11.1) of the small end (11.2) has a larger diameter than the outer diameter of the multi-strand superconducting wire (6) to prevent the superconducting wire from being scratched during the start-up process.

4. A rotating die carrier apparatus for a cantilever single-strand machine for stranding superconducting cables according to claim 1, characterized in that: The support base (9) has at least two through holes in the convex circumferential direction formed by the inner hole two (9.2), inner hole three (9.3) and inner hole four (9.4) for disassembling the seat ring of the thrust ball bearing (10).

5. A rotating die carrier apparatus for a cantilever single-strand machine for stranding superconducting cables as defined in claim 1, characterized in that: A flat washer (3) is provided between the base (2) and the body (1), and the internal hexagonal head screw b (15) passes through the inner hole of the flat washer (3) and is threaded to the body (1).

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