Tensioning mechanism

By designing a tightening mechanism including guide seat, slider and thrust mechanism in the magnetically constrained nuclear fusion device, the tightening problem caused by the small space in the assembly of the circumferential field coil is solved, and the stable reinforcement of the circumferential field coil is achieved. , reduces design requirements and avoids warping problems.

CN222365481UActive Publication Date: 2025-01-17BEIJING STARTORUS FUSION TECHNOLOGY CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202421223112.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-31
Publication Date
2025-01-17
Estimated Expiration
2034-05-31

AI Technical Summary

Technical Problem

In magnetically constrained nuclear fusion device, during the assembly process of the circumferential field coil, due to high accuracy requirements and small space, it is difficult for the prior art to effectively achieve tightening and reinforcement between the circumferential field coils, which can easily lead to warping problems.

Method used

A tightening mechanism including guide seat, slider, wedge and thrust mechanism is designed to ensure simplicity of operation by moving the slider horizontally in a narrow space and using the wedge and thrust mechanism. and reliability.

Benefits of technology

Effective tightening between the loop field coils is achieved in a narrow space, which strengthens the stability and accuracy of assembly, reduces design requirements, and avoids the occurrence of warping problems.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222365481U_ABST
    Figure CN222365481U_ABST
Patent Text Reader

Abstract

The tensioning mechanism comprises a guide seat, a first sliding block, a second sliding block, wedge blocks, a thrust mechanism and a rebound device, wherein the first sliding block and the second sliding block are arranged in the guide seat; the wedge blocks are respectively matched with the first sliding block and the second sliding block; the thrust mechanism and the rebound device are arranged on the guide seat; the two ends of the rebounding device are connected to the first sliding block and the second sliding block respectively. The first sliding block and the second sliding block are transversely and horizontally installed through the rail of the guide seat, the first inclined faces are formed on the opposite sides of the first sliding block and the second sliding block, and the wedge block is installed between the first sliding block and the second sliding block. Second slopes matched with the first slopes are formed on the two sides, opposite to the first sliding block and the second sliding block, of the wedge block, the wedge block is pressed downwards through the thrust mechanism to push the first sliding block and the second sliding block, and therefore single-side operation is achieved in a narrow space, and the tensioning function can be achieved. And the springback device is arranged for springback, so that the operation is simple and reliable.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the field of toroidal field coil assembly, in particular to a tensioning mechanism. Background Art

[0002] In a magnetic confinement nuclear fusion device (for example, a tokamak), various types of coils are usually included, such as poloidal field (PF) coils, toroidal field (TF) coils, etc. Among them, the toroidal field coils are used to generate an annular confinement magnetic field for the plasma and are also used as an important structural support component of the tokamak device. Usually, a plurality of discrete toroidal field coils are arranged symmetrically in the annular circle. In engineering practice, the circumferential mating surfaces of each toroidal field coil are CNC machined mating surfaces, which need to be put together like orange segments. This places extremely high requirements on processing and manufacturing, the accuracy of the mating surfaces, and the form and position tolerances. If the process control is not good, warping may occur, resulting in the inability to assemble according to the required accuracy. In this case, if a tensioning mechanism can be arranged, the design requirements of the toroidal field will be reduced accordingly, thereby effectively controlling the deformation.

[0003] Therefore, there is an urgent need for a simple and reliable tensioning mechanism that can be manually operated in a narrow space to provide the possibility of tightening and reinforcing the toroidal field coils. Utility Model Content

[0004] The utility model provides a tensioning mechanism to solve the problem of tensioning toroidal field coils in a narrow space.

[0005] The utility model adopts the following technical solutions:

[0006] The utility model provides a tensioning mechanism, comprising:

[0007] Guide seat; the guide seat is used to provide a transverse track;

[0008] A first slider and a second slider are arranged in the guide seat; the first slider and the second slider are both capable of horizontally moving along the track, and a first inclined surface is formed on the side opposite to the second slider, and the two first inclined surfaces form a shape with a large opening on the upper side and a small opening on the lower side;

[0009] A wedge block is arranged between the two first inclined surfaces; a second inclined surface is formed on both sides of the wedge block, and the second inclined surface matches the first inclined surface;

[0010] A thrust mechanism matched with the wedge block, the thrust mechanism can press down the wedge block to push the first sliding block and the second sliding block;

[0011] A rebound device is used for providing rebound force to the first slider and the second slider; two ends of the rebound device are respectively connected to the first slider and the second slider.

[0012] In some embodiments, the thrust mechanism includes a threaded rod arranged on the guide seat; the threaded rod is vertically arranged between the first slider and the second slider, and the wedge block is sleeved on the threaded rod; an adjusting nut is threadedly connected to the upper end of the threaded rod, and the adjusting nut presses down the wedge block to push the first slider and the second slider to move in the horizontal direction.

[0013] In some embodiments, the rebound device includes at least one group of waist-shaped holes opened on the guide seat, the number of the waist-shaped holes in the same group is two, and they are located on the same side of the guide seat opposite to the first slider and the second slider respectively; the two waist-shaped holes in the same group are both provided with screws connected to the first slider and the second slider respectively, and a spring is connected between the two screws.

[0014] In some embodiments, the angles between the first inclined surface and the second inclined surface and the vertical surface are both less than 45°.

[0015] In some embodiments, the rebound device includes two groups of waist-shaped holes, which are respectively opened on both sides of the guide seat.

[0016] In some embodiments, the lower end of the threaded rod is threadedly connected to the guide seat.

[0017] In some embodiments, a rotating block is formed on the upper end of the threaded rod.

[0018] In some embodiments, a first clamping block is formed on the first sliding block, and the first clamping block is clamped on the outside of the track; a second clamping block is formed on the second sliding block, and the second clamping block is also clamped on the outside of the track.

[0019] In some embodiments, a third inclined surface is formed on the end of the first block, a fourth inclined surface is formed on the end of the second block, and the third inclined surface and the fourth inclined surface are symmetrical to each other.

[0020] In some embodiments, a gasket is provided between the adjusting nut and the wedge block.

[0021] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0022] The utility model utilizes the track of a guide seat to horizontally install a first slider and a second slider, a first inclined surface is formed on one side opposite to the first slider and the second slider, a wedge block is installed between the first slider and the second slider, and the wedge block is formed with second inclined surfaces matching the first inclined surface on both sides opposite to the first slider and the second slider, and the wedge block is pressed down by a thrust mechanism to push the first slider and the second slider, so that a single-sided operation can be achieved in a narrow space, and a tensioning function can be realized; and a rebound device is provided for rebound, and the operation is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 A three-dimensional diagram of a tensioning mechanism provided in an embodiment of the present application;

[0025] Figure 2 An exploded schematic diagram of the tensioning mechanism provided in an embodiment of the present application;

[0026] Figure 3 A longitudinal cross-sectional view of the tensioning mechanism provided in an embodiment of the present application;

[0027] Figure 4 A top view of the tensioning mechanism provided in an embodiment of the present application;

[0028] Description of reference numerals: 1, guide seat; 101, track; 2, first slider; 3, second slider; 4, first inclined plane; 5, threaded rod; 501, rotating block; 6, wedge block; 601, second inclined plane; 7, adjusting nut;

[0029] 8. Rebound device; 801. Waist-shaped hole; 802. Screw; 803. Spring;

[0030] 9. First clamping block; 901. Third inclined plane; 10. Second clamping block; 1001. Fourth inclined plane; 11. Gasket. DETAILED DESCRIPTION

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figure 1-4 As shown, a tensioning mechanism provided by an embodiment of the present application is shown. The tensioning mechanism includes a guide seat 1, a first slider 2 and a second slider 3 installed in the guide seat 1. Specifically, a track 101 for providing lateral horizontal movement is provided in the guide seat 1. The first slider 2 and the second slider 3 are installed in the track 101, so that the first slider 2 and the second slider 3 can both move horizontally along the track 101. In addition, a first inclined surface 4 is formed on the side opposite to the second slider 3, and the two first inclined surfaces 4 form a shape with a large upper opening and a small lower opening.

[0035] The tensioning mechanism further includes a wedge block 6 disposed between the two first inclined surfaces 4. The wedge block 6 is formed with second inclined surfaces 601 on both sides opposite to the first slider 2 and the second slider 3, and the second inclined surfaces 601 cooperate with the first inclined surfaces 4; in addition, the tensioning mechanism further includes a thrust mechanism that cooperates with the wedge block 6, and the thrust mechanism can press down the wedge block 6 to push the first slider 2 and the second slider 3 to move. When the thrust mechanism applies downward pressure, the thrust mechanism can press down the wedge block 6 to push the first slider 2 and the second slider 3, so that a single-sided operation can be achieved in a narrow space, and the tensioning function can be achieved.

[0036] In order to achieve the reset of the first slider 2 and the second slider 3, the tensioning mechanism further includes a rebound device 8 for providing rebound force to the first slider 2 and the second slider 3. The two ends of the rebound device 8 are respectively connected to the first slider 2 and the second slider 3. When the first slider 2 and the second slider 3 move in opposite directions, the rebound device 8 is in a stretched state, and when the thrust mechanism is relaxed, the first slider 2 and the second slider 3 are reset under the tension of the rebound device 8.

[0037] In one embodiment, the thrust mechanism may adopt a ratchet thrust mechanism composed of a rack and a lever. The rack is fixedly connected to the wedge block 6. The rack is moved by the lever, and the rack drives the wedge block 6 to achieve unidirectional movement. After the lever is disengaged from the rack, the wedge block 6 may be in a relaxed state.

[0038] In another embodiment, the thrust mechanism may be a screw thrust mechanism, see Figure 1-4 As shown, the screw thrust mechanism installs a threaded rod 5 on the guide seat 1. Specifically, the threaded rod 5 is installed in a threaded manner at the bottom of the guide seat 1, so that the threaded rod 5 is screwed on the bottom of the guide seat 1 and is vertically located between the first slider 2 and the second slider 3. A wedge block 6 is sleeved on the threaded rod 5, and a second inclined surface 601 is formed on both sides of the wedge block 6, and the second inclined surface 601 cooperates with the first inclined surface 4. The angles between the first inclined surface 4 and the second inclined surface 601 and the vertical plane are both less than 45°. An adjusting nut 7 is threadedly connected to the upper end of the threaded rod 5, and a gasket 11 is provided between the adjusting nut 7 and the wedge block 6. When the adjusting nut 7 is rotated, the adjusting nut 7 presses down the wedge block 6, which can push the first slider 2 and the second slider 3. In this way, unilateral operation can be achieved in a narrow space, and the tightening function can be achieved.

[0039] The rebound device 8 may include a spring, one end of which is arranged on the first slider 2 and the other end of which is arranged on the second slider 3 .

[0040] In another embodiment, see Figure 1 , Figure 2 and Figure 4As shown, the rebound device 8 may include two groups of waist-shaped holes 801 provided on the guide seat 1, the two groups of waist-shaped holes 801 are provided on both sides of the guide seat 1, the number of each group of waist-shaped holes 801 is two, and the same group of waist-shaped holes 801 is located on the same side of the guide seat 1 and is opposite to the first slider 2 and the second slider 3. Screws 802 are inserted into the two waist-shaped holes 801 of the same group and are respectively threadedly connected to the first slider 2 and the second slider 3, and a spring 803 is connected between the two screws 802. When the first slider 2 and the second slider 3 move in opposite directions, the two screws 802 also move in the two waist-shaped holes 801 along with the first slider 2 and the second slider 3, and the spring 803 is stretched. Once the adjusting nut 7 above the wedge block 6 is loosened, the first slider 2 and the second slider 3 can be reset by moving in a direction close to each other under the tension of the spring 803.

[0041] In order to facilitate the circumferential fastening of the toroidal field coil in a narrow space, a first clamping block 9 is formed on the first slider 2, and the first clamping block 9 is clamped on the outside of the track 101; a second clamping block 10 is formed on the second slider 3, and the second clamping block 10 is also clamped on the outside of the track 101. A third inclined surface 901 is formed on the end of the first clamping block 9, and a fourth inclined surface 1001 is formed on the end of the second clamping block 10. The third inclined surface 901 and the fourth inclined surface 1001 are symmetrical to each other, so that the first clamping block 9 and the second clamping block 10 are conveniently used to circumferentially fasten the toroidal field coil.

[0042] In addition, in order to facilitate tightening the threaded rod 5 to the bottom of the guide seat 1, a rotating block 501 is formed on the upper end of the threaded rod 5. The rotating block 501 is a square structure and can be screwed with a wrench or other tools to increase the torque.

[0043] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A tensioning mechanism, characterized in that: include A guide seat (1); the guide seat (1) is used to provide a transverse track (101); A first slider (2) and a second slider (3) are arranged in the guide seat (1); the first slider (2) and the second slider (3) are both capable of horizontally moving along the track (101); a first inclined surface (4) is formed on one side of the first slider (2) and the second slider (3) opposite to each other; the two first inclined surfaces (4) form a shape with a larger opening on the upper side and a smaller opening on the lower side; a wedge block (6) disposed between the two first inclined surfaces (4); the wedge block (6) is formed with second inclined surfaces (601) on both sides opposite to the first sliding block (2) and the second sliding block (3), and the second inclined surfaces (601) are matched with the first inclined surfaces (4); a thrust mechanism matched with the wedge block (6), wherein the thrust mechanism can press down the wedge block (6) to push the first slider (2) and the second slider (3) to move; and A rebound device (8) for providing rebound force to a first slider (2) and a second slider (3); two ends of the rebound device (8) are respectively connected to the first slider (2) and the second slider (3).

2. The tensioning mechanism according to claim 1, characterized in that: The thrust mechanism comprises a threaded rod (5) arranged on the guide seat (1); the threaded rod (5) is vertically arranged between the first slider (2) and the second slider (3), and the wedge block (6) is sleeved on the threaded rod (5); an adjusting nut (7) is threadedly connected to the upper end of the threaded rod (5), and the adjusting nut (7) presses down the wedge block (6) to push the first slider (2) and the second slider (3) to move in the horizontal direction.

3. The tensioning mechanism according to claim 1, characterized in that: The rebound device (8) comprises at least one group of waist-shaped holes (801) formed on the guide seat (1); the number of waist-shaped holes (801) in the same group is two and they are located on the same side of the guide seat (1) and are respectively opposite to the first slider (2) and the second slider (3); screws (802) are inserted into the two waist-shaped holes (801) in the same group and are respectively connected to the first slider (2) and the second slider (3); a spring (803) is connected between the two screws (802).

4. The tensioning mechanism according to claim 1, characterized in that: The included angles between the first inclined surface (4) and the second inclined surface (601) and the vertical surface are both less than 45°.

5. The tensioning mechanism according to claim 3, characterized in that: The rebound device (8) comprises two groups of waist-shaped holes (801), which are respectively opened on both sides of the guide seat (1).

6. The tensioning mechanism according to claim 2, characterized in that: The lower end of the threaded rod (5) is threadedly fixedly connected to the guide seat (1).

7. The tensioning mechanism according to claim 6, characterized in that: A rotating block (501) is formed on the upper end of the threaded rod (5).

8. The tensioning mechanism according to claim 1, characterized in that: A first clamping block (9) is formed on the first sliding block (2), and the first clamping block (9) is clamped on the outside of the track (101); a second clamping block (10) is formed on the second sliding block (3), and the second clamping block (10) is also clamped on the outside of the track (101).

9. The tensioning mechanism according to claim 8, characterized in that: A third inclined surface (901) is formed at the end of the first clamping block (9), and a fourth inclined surface (1001) is formed at the end of the second clamping block (10), and the third inclined surface (901) and the fourth inclined surface (1001) are symmetrical to each other.

10. The tensioning mechanism according to claim 2, characterized in that: A gasket (11) is provided between the adjusting nut (7) and the wedge block (6).