Bending device for CORC-CICC cable

Abstract

The invention discloses a bending device for a CORC-CICC cable. The bending device comprises a support assembly, a bending assembly and a bending assembly, the cable bending assembly is mounted on the bracket assembly and is used for bending the CORC-CICC cable; the lifting rod is adjustably installed on the support assembly, connected with the cable bending assembly and used for adjusting the position of the cable bending assembly and changing the bending radius of the CORC-CICC cable; and the auxiliary wheel assembly is adjustably mounted on the bracket assembly and is matched with the cable bending assembly to bend the CORC-CICC cable so as to prevent the CORC-CICC cable from rebounding. The gap between the cable bending assembly and the auxiliary wheel assembly forms an arc, the radius of the arc can be changed, and the problem that the bending radius of the CORC-CICC cable is not easy to change is solved. When the CORC-CICC cable passes through the gap between the cable bending assembly and the auxiliary wheel assembly, the cable bending assembly applies outward pressure to the CORC-CICC cable along the circle center, the auxiliary wheel assembly applies inward pressure to the CORC-CICC cable along the circle center, the two strands of pressure are matched to bend the CORC-CICC cable, and the problem that the CORC-CICC cable rebounds is solved.

Description

Technical Field

[0001] The invention relates to the technical field of superconducting cable performance testing, and in particular to a bending device for a CORC-CICC cable. Background Art

[0002] As the global demand for clean energy grows, fusion energy, as a nearly pollution-free energy form, has received widespread attention. As a key device for achieving fusion energy, the performance of the tokamak device directly determines the efficiency and safety of energy conversion. With the continuous improvement of superconducting performance and the maturity of technology, high-temperature superconductors are considered to be a challenge for future nuclear fusion magnets.

[0003] Many research institutes have been designing several types of high-current REBCO conductor circular core (CORC) cable-in-duct conductors (CICCs) for use in the central solenoid (CS) magnets of next-generation tokamaks. Among them, a structure that embeds six CORC sub-cables into the spiral grooves of a copper structural component stands out. This CORC-CICC cable, rated at 45kA at 4.2K and 20T, can withstand huge electromagnetic forces.

[0004] CORC-CICC cables have good thermal conductivity, but poor mechanical properties. It is necessary to evaluate the mechanical properties of CORC-CICC cables in low temperature and electromagnetic environments, among which bending characteristics are an important part of their mechanical properties. Currently, there is a lack of devices on the market for evaluating the bending characteristics of CORC-CICC cables. Most of them require manual holding of the two ends of the cable to bend with a circular mold as the center. The radius of the model is not easy to change, and the CORC-CICC cable is prone to rebound, resulting in changes in the bending radius and inaccurate bending test results. Therefore, there is an urgent need for a bending device for CORC-CICC cables. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention designs a bending device for a CORC-CICC cable, comprising: a bracket assembly; a cable bending assembly, which is installed on the bracket assembly and is used to bend the CORC-CICC cable; a lifting rod, which is adjustably installed on the bracket assembly and is connected to the cable bending assembly and is used to adjust the position of the cable bending assembly and change the bending radius of the CORC-CICC cable; an auxiliary wheel assembly, which is adjustably installed on the bracket assembly and cooperates with the cable bending assembly to bend the CORC-CICC cable to prevent the CORC-CICC cable from rebounding.

[0006] Preferably, the bracket assembly includes: a support frame; a fixed plate installed on the support frame, and the cable bending assembly and the auxiliary wheel assembly are both installed on the fixed plate; an adjustment frame installed on the support frame, and the lifting rod is adjustably installed on the adjustment frame.

[0007] Preferably, there are multiple auxiliary wheel assemblies, and the multiple auxiliary wheel assemblies are evenly installed on the fixed plate, wherein two auxiliary wheel assemblies are located below the cable bending assembly.

[0008] Preferably, a first adjustment hole and a second adjustment hole are provided on the fixed disk; the cable bending assembly is adjustably installed in the first adjustment hole; the number of the second adjustment holes is multiple and is the same as the number of the auxiliary wheel assemblies, and the multiple second adjustment holes are evenly arranged on the fixed disk, wherein two of the second adjustment holes are located below the first adjustment hole, and the auxiliary wheel assembly is adjustably installed in the second adjustment hole.

[0009] Preferably, an adjusting nut is provided on the adjusting frame, and the lifting rod is adjustably mounted on the adjusting nut.

[0010] Preferably, the cable bending assembly includes: a lifting frame connected to the lifting rod; a first bending gear installed on the lifting frame; a second bending gear installed on the lifting frame and connected to the first bending gear; a transmission rod installed on the lifting frame and connected to the second bending gear; a bending wheel installed on the bracket assembly and connected to the transmission rod.

[0011] Preferably, the diameter of the second bending gear is greater than the diameter of the first bending gear.

[0012] Preferably, a rotating handle is provided on the first bending gear.

[0013] Preferably, the lifting rod includes: a screw rod, which is adjustably mounted on the bracket assembly; a limit piece, which is mounted on one end of the screw rod and connected to the cable bending assembly; and an adjustment handle, which is mounted on the other end of the screw rod.

[0014] Preferably, the auxiliary wheel assembly includes: an auxiliary wheel, an adjusting bolt and an adjusting nut; the adjusting bolt and the adjusting nut cooperate to adjustably mount the auxiliary wheel on the bracket assembly; the auxiliary wheel is used to cooperate with the cable bending assembly to bend the CORC-CICC cable to prevent the CORC-CICC cable from rebounding.

[0015] Compared with the closest prior art, the beneficial effects of the present invention are: 1. The gap between the cable bending assembly and the auxiliary wheel assembly of the present invention forms an arc, and the radius of the arc can be changed, which solves the problem that the bending radius of the CORC-CICC cable is difficult to change. When the CORC-CICC cable passes through the gap between the cable bending assembly and the auxiliary wheel assembly, the cable bending assembly applies pressure to the CORC-CICC cable outward along the center of the circle, and the auxiliary wheel assembly applies pressure to the CORC-CICC cable inward along the center of the circle. The two pressures cooperate to bend the CORC-CICC cable, solving the problem of the CORC-CICC cable rebounding.

[0016] 2. The present invention adjusts the length of the screw below the bracket assembly by rotating the adjustment handle, thereby adjusting the distance from the cable bending assembly to the center of the fixed disk, thereby changing the bending radius of the CORC-CICC cable, solving the problem that the bending radius of the CORC-CICC cable is difficult to change.

[0017] 3. The diameter of the second bending gear of the present invention is larger than that of the first bending gear. The small gear drives the large gear to rotate, and a rotating handle is provided on the first bending gear. The cooperation of the two structures solves the problem of insufficient artificial bending stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a first structural schematic diagram of the bending device of the present invention.

[0019] Figure 2 It is a second structural schematic diagram of the bending device of the present invention.

[0020] Figure 3 It is a first structural schematic diagram of the bracket assembly of the present invention.

[0021] Figure 4 It is a second structural schematic diagram of the bracket assembly of the present invention.

[0022] Figure 5 It is a first structural schematic diagram of the cable bending assembly of the present invention.

[0023] Figure 6 It is a second structural schematic diagram of the cable bending assembly of the present invention.

[0024] Figure 7 It is a structural schematic diagram of the lifting rod of the present invention.

[0025] Figure 8 It is a schematic structural diagram of the auxiliary wheel assembly of the present invention.

[0026] Reference numerals: 1-bracket assembly, 11-support frame, 12-fixed plate, 13-adjusting frame, 2-cable bending assembly, 21-lifting frame, 22-first bending gear, 23-second bending gear, 24-transmission rod, 25-bending wheel, 3-lifting rod, 31-screw rod, 32-limiting piece, 33-adjusting handle, 4-auxiliary wheel assembly, 41-auxiliary wheel, 42-adjusting bolt, 43-adjusting nut. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] like Figure 1-Figure 8As shown, the present invention provides a bending device for a CORC-CICC cable, comprising: a bracket assembly 1. A cable bending assembly 2, mounted on the bracket assembly 1, and used for bending the CORC-CICC cable. A lifting rod 3, adjustably mounted on the bracket assembly 1 and connected to the cable bending assembly 2, used for adjusting the position of the cable bending assembly 2 and changing the bending radius of the CORC-CICC cable. An auxiliary wheel assembly 4, adjustably mounted on the bracket assembly 1, cooperates with the cable bending assembly 2 to bend the CORC-CICC cable and prevent the CORC-CICC cable from rebounding. The gap between the cable bending assembly 2 and the auxiliary wheel assembly 4 forms an arc, and the radius of the arc can be changed, which solves the problem that the bending radius of the CORC-CICC cable is difficult to change. When the CORC-CICC cable passes through the gap between the cable bending assembly 2 and the auxiliary wheel assembly 4, the cable bending assembly 2 applies pressure to the CORC-CICC cable along the center of the circle outward, and the auxiliary wheel assembly 4 applies pressure to the CORC-CICC cable along the center of the circle inward. The two pressures cooperate to bend the CORC-CICC cable, solving the problem of CORC-CICC cable rebound.

[0029] Preferably, the support assembly 1 comprises: a support frame 11, a fixed plate 12 mounted on the support frame 11, and the cable bending assembly 2 and the auxiliary wheel assembly 4 are both mounted on the fixed plate 12, and an adjustment frame 13 mounted on the support frame 11, and the lifting rod 3 is adjustably mounted on the adjustment frame.

[0030] Preferably, there are multiple auxiliary wheel assemblies 4, and the multiple auxiliary wheel assemblies 4 are evenly mounted on the fixed plate 12, wherein two auxiliary wheel assemblies 4 are located below the cable bending assembly 2. There are nine auxiliary wheel assemblies 4, wherein two auxiliary wheel assemblies 4 are located below the cable bending assembly 2, and the cable bending assembly 2 and the two auxiliary wheel assemblies 4 form an arc, and the radius of the arc can be changed. When the CORC-CICC cable passes through the gap between the cable bending assembly 2 and the two auxiliary wheel assemblies 4, the cable bending assembly 2 applies pressure to the CORC-CICC cable along the outward direction of the center of the circle, and the two auxiliary wheel assemblies 4 apply pressure to the CORC-CICC cable along the inward direction of the center of the circle, and the two pressures cooperate to bend the CORC-CICC cable. The other seven auxiliary wheel assemblies 4 are distributed along the circumference, and the circumference radius is the same as the arc radius formed by the gap between the cable bending assembly 2 and the two auxiliary wheel assemblies 4, and both can be changed. After the CORC-CICC cable passes through the bending part, it will reach the seven auxiliary wheel assemblies 4 in turn, and each auxiliary wheel assembly 4 will apply pressure to the cable along the inward direction of the center of the circle to offset the rebound stress of the CORC-CICC cable, thereby preventing the rebound of the cable after bending.

[0031] Preferably, a first adjustment hole and a second adjustment hole are provided on the fixed disk 12. The cable bending assembly 2 is adjustably installed in the first adjustment hole. The number of the second adjustment holes is multiple, and the number is the same as that of the auxiliary wheel assembly 4. The multiple second adjustment holes are evenly arranged on the fixed disk 12, wherein two second adjustment holes are located below the first adjustment hole, and the auxiliary wheel assembly 4 is adjustably installed in the second adjustment holes.

[0032] Preferably, an adjusting nut is provided on the adjusting frame, and the lifting rod 3 is adjustably mounted on the adjusting nut.

[0033] Preferably, the cable bending assembly 2 comprises: a lifting frame 21 connected to the lifting rod 3. A first bending gear 22 mounted on the lifting frame 21. A second bending gear 23 mounted on the lifting frame 21 and connected to the first bending gear 22. A transmission rod 24 mounted on the lifting frame 21 and connected to the second bending gear 23. A bending wheel 25 mounted on the bracket assembly 1 and connected to the transmission rod 24.

[0034] Preferably, the diameter of the second bending gear 23 is larger than the diameter of the first bending gear 22. Preferably, a rotating handle is provided on the first bending gear 22. The diameter of the second bending gear 23 is larger than the diameter of the first bending gear 22, and the small gear drives the large gear to rotate, and a rotating handle is provided on the first bending gear 22. The cooperation of the two structures solves the problem of insufficient artificial bending stress.

[0035] Preferably, the lifting rod 3 includes: a screw rod 31, which is adjustably mounted on the bracket assembly 1. A stopper 32, which is mounted on one end of the screw rod 31 and connected to the cable bending assembly 2. An adjustment handle 33, which is mounted on the other end of the screw rod 31. By rotating the adjustment handle 33, the length of the screw rod 31 below the bracket assembly 1 is adjusted, thereby adjusting the distance from the cable bending assembly 2 to the center of the fixing plate 12, thereby changing the bending radius of the CORC-CICC cable, solving the problem that the bending radius of the CORC-CICC cable is difficult to change.

[0036] Preferably, the auxiliary wheel assembly 4 comprises: an auxiliary wheel 41, an adjusting bolt 42 and an adjusting nut 43. The adjusting bolt 42 and the adjusting nut 43 cooperate to adjustably mount the auxiliary wheel 41 on the bracket assembly 1. The auxiliary wheel 41 is used to cooperate with the cable bending assembly 2 to bend the CORC-CICC cable to prevent the CORC-CICC cable from rebounding.

[0037] 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.

[0038] In addition, the terms "above" and "below" 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 "above" and "below" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] 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, an electrical connection, or communication with each other; 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.

[0040] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention to be approved.

Claims

1. A bending device for a CORC-CICC cable, characterized in that: include: Bracket assembly; A cable bending assembly, mounted on the bracket assembly, for bending the CORC-CICC cable; A lifting rod, which is adjustably mounted on the bracket assembly and connected to the cable bending assembly, and is used to adjust the position of the cable bending assembly to change the bending radius of the CORC-CICC cable; The auxiliary wheel assembly is adjustably mounted on the bracket assembly and cooperates with the cable bending assembly to bend the CORC-CICC cable to prevent the CORC-CICC cable from rebounding.

2. The bending device for CORC-CICC cable according to claim 1, characterized in that: The bracket assembly comprises: Support frame; A fixed plate, mounted on the support frame, on which the cable bending assembly and the auxiliary wheel assembly are both mounted; The adjusting frame is mounted on the supporting frame, and the lifting rod is adjustably mounted on the adjusting frame.

3. The bending device for CORC-CICC cable according to claim 2, characterized in that: There are multiple auxiliary wheel assemblies, and the multiple auxiliary wheel assemblies are evenly installed on the fixed plate, wherein two of the auxiliary wheel assemblies are located below the cable bending assembly.

4. The bending device for CORC-CICC cable according to claim 3, characterized in that: The fixing plate is provided with a first adjustment hole and a second adjustment hole; The cable bending assembly is adjustably installed in the first adjustment hole; The number of the second adjustment holes is multiple and is the same as the number of the auxiliary wheel assemblies. The multiple second adjustment holes are evenly arranged on the fixed plate, two of which are located below the first adjustment holes, and the auxiliary wheel assembly can be adjustably installed in the second adjustment holes.

5. The bending device for CORC-CICC cable according to claim 2, characterized in that: The adjusting frame is provided with an adjusting nut, and the lifting rod is adjustably mounted on the adjusting nut.

6. The bending device for CORC-CICC cable according to claim 1, characterized in that: The cable bending assembly comprises: A lifting frame connected to the lifting rod; A first bending gear, mounted on the lifting frame; A second bending gear, mounted on the lifting frame and connected with the first bending gear; A transmission rod, mounted on the lifting frame and connected to the second bending gear; The bending wheel is mounted on the bracket assembly and connected to the transmission rod.

7. The bending device for CORC-CICC cable according to claim 6, characterized in that: The diameter of the second bending gear is greater than the diameter of the first bending gear.

8. The bending device for CORC-CICC cable according to claim 6, characterized in that: The first bending gear is provided with a rotating handle.

9. The bending device for CORC-CICC cable according to claim 1, characterized in that: The lifting rod comprises: A screw rod, adjustably mounted on the bracket assembly; A stopper, mounted on one end of the screw rod and connected to the cable bending assembly; An adjusting handle is mounted on the other end of the screw rod.

10. The bending device for CORC-CICC cable according to claim 1, characterized in that: The auxiliary wheel assembly comprises: an auxiliary wheel, an adjusting bolt and an adjusting nut; The adjusting bolt and the adjusting nut cooperate to adjustably mount the auxiliary wheel on the bracket assembly; The auxiliary wheel is used to cooperate with the cable bending assembly to bend the CORC-CICC cable to prevent the CORC-CICC cable from rebounding.

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