A detachable ring frame for optical fiber coil

Abstract

The utility model discloses a detachable ring skeleton for an optical fiber coil, comprising a first flange, a second flange and a fixed block. Through holes and annular grooves for arranging the fixed blocks are arranged in the middle of the first flange and the second flange. The annular grooves are distributed on the outer side thereof with the through holes as the center. The fixed blocks comprise a plurality of large fixed blocks and a plurality of small fixed blocks. The two ends of the plurality of large fixed blocks and the plurality of small fixed blocks are respectively inserted in the annular grooves of the first flange and the second flange. Gaps are arranged between the plurality of large fixed blocks and the plurality of small fixed blocks and they mutually form a circular ring structure. The first flange, the second flange, the plurality of large fixed blocks and the plurality of small fixed blocks are connected through a threaded structure to form a detachable ring skeleton. By adopting split fixed blocks and gaps are arranged between the fixed blocks, and by connecting with the flange through a threaded structure, the problems existing in the prior art can be well solved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber gyroscopes, in particular to a detachable ring frame for an optical fiber coil. Background Art

[0002] Fiber optic gyroscope is a new type of all-solid-state inertial instrument with the advantages of small size, light weight, wide accuracy range, and no moving parts. Fiber optic gyroscope has become a strong competitor to electromechanical gyroscope and laser gyroscope, and it has made important contributions in aerospace, aviation, navigation and other fields. The fiber optic gyroscope ring is the most important sensitive component in the fiber optic gyroscope. The specifications of the fiber optic ring are different in different types of fiber optic gyroscopes. The general method of preparing the fiber optic ring is to wind the optical fiber on a metal skeleton in a specific way and fix the optical fiber with a specific glue (to enhance the vibration resistance of the ring). When the temperature changes, the metal skeleton will cause thermal expansion of the fiber optic ring, resulting in stress changes, which will lead to non-reciprocal phase error of the ring, which is an important factor affecting the temperature sensitivity of the fiber optic gyroscope.

[0003] How to develop a detachable skeleton has become an important topic, which can greatly reduce the non-reciprocal phase error of the loop and lay the foundation for medium and high precision fiber optic gyroscopes. Utility Model Content

[0004] In view of the above problems existing in the prior art, the purpose of the utility model is to provide a detachable ring frame for an optical fiber coil, which can solve the problems existing in the prior art by adopting a split fixed block with gaps between each fixed block and connecting them to the flange through a threaded structure.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a detachable ring frame for an optical fiber coil, comprising a first flange, a second flange, and a fixed block. The first flange and the second flange are provided with a through hole in the middle and an annular groove for accommodating the fixed block. The annular groove is distributed on the outside with the through hole as the center. The fixed block comprises a plurality of large fixed blocks and a plurality of small fixed blocks. The ends of the plurality of large fixed blocks and the plurality of small fixed blocks are respectively inserted in the annular grooves of the first flange and the second flange. Gaps are provided between the plurality of large fixed blocks and the plurality of small fixed blocks and they form a circular ring structure with each other. The first flange, the second flange, the plurality of large fixed blocks and the plurality of small fixed blocks are connected by a threaded structure to form a detachable ring frame.

[0006] Furthermore, the threaded structure is that screw holes are symmetrically provided at the upper and lower ends of the large fixed block and the small fixed block, and second screw holes corresponding to the screw holes are provided on the first flange and the second flange, and the second screw holes are threadedly fixed to the screw holes of several large fixed blocks and several small fixed blocks through several fasteners.

[0007] Furthermore, an annular groove can be formed between the outer ring of the stator block and the first flange and the second flange.

[0008] Furthermore, arc-shaped protrusions are provided on the tops and bottoms of the plurality of large stator blocks and the plurality of small stator blocks, and cylindrical hole sections corresponding to the arc-shaped protrusions are provided at the bottoms of the annular grooves on the first flange and the second flange, and outer step surfaces are formed between the arc-shaped protrusions and the large stator blocks and the small stator blocks, and inner step surfaces are formed between the cylindrical hole sections and the annular grooves, and by inserting the two ends of the large stator blocks and the small stator blocks into the annular grooves of the first flange and the second flange, the arc-shaped protrusions as a whole can be placed in the arc-shaped hole sections, and the inner step surfaces abut against the outer step surfaces.

[0009] Furthermore, the threaded structure is that a column is provided at one end of the first flange with the through hole as the center, the column is penetrated by a second through hole, the second through hole is connected to the through hole, the outer peripheral surface of the column is provided with an external threaded surface, and the inner wall of the through hole on the second flange is provided with an internal threaded surface matching the external threaded surface, and by screwing the internal threaded surface of the second flange with the external threaded surface of the column of the first flange, the two ends of several large fixed blocks and several small fixed blocks can be tightened in the annular groove respectively.

[0010] Furthermore, the annular groove on the first flange is composed of a plurality of large arc grooves corresponding to the large fixed block and a plurality of small arc grooves corresponding to the small fixed block. Gaps are provided between the plurality of large arc grooves and the plurality of small arc grooves, and they mutually form an annular structure corresponding to the annular groove on the second flange. The large arc groove and the small arc groove are used to position the large fixed block and the small fixed block so that the gap distance between the plurality of large fixed blocks and the plurality of small fixed blocks is fixed.

[0011] The detachable ring frame for optical fiber coil provided by the utility model adopts split fixed blocks and gaps between the fixed blocks, and is connected to the flange plate through a threaded structure. After the flange plate is removed, the finished fiber optic coil can be obtained. During the whole process, the optical fiber coil is hardly affected by the large additional force, thereby reducing the output risk of the optical fiber coil; it can well solve the problems existing in the prior art;

[0012] This solution also enables positioning of a plurality of fixed blocks and maintaining a consistent gap distance between the plurality of fixed blocks by designing the annular groove on the flange to be split. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and specific implementations.

[0014] Figure 1 It is a schematic diagram of the exploded structure of the detachable ring frame for the optical fiber coil in Example 1;

[0015] Figure 2 This is a schematic diagram of the overall structure of the detachable ring frame for the optical fiber coil in Example 1;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the large fixed block in the detachable ring frame for the optical fiber coil in Example 1;

[0017] Figure 4 Schematic diagram of the cross-sectional structure of the annular groove in the detachable ring frame for the optical fiber coil in Example 1;

[0018] Figure 5 It is a cross-sectional schematic diagram of the second flange in the detachable ring frame for the optical fiber coil in Example 2;

[0019] Figure 6 It is a schematic diagram of the cross-sectional structure of the first flange in the detachable ring frame for the optical fiber coil in Example 2;

[0020] Figure 7 This is a schematic diagram of the overall structure of the detachable ring frame for the optical fiber coil in Example 2.

[0021] Figure 8 This is a schematic diagram of the top view of the first flange in the detachable ring frame for the optical fiber coil in Example 3.

[0022] Illustration Description:

[0023] A first flange 100, a second flange 200, a fixed block 300, a fastener 400, and an annular groove 500;

[0024] Through hole 110, annular groove 120, large arc groove 121, small arc groove 122, second screw hole 130, notch 140, cylindrical hole section 150, inner step surface 160, column 170, second through hole 180, outer threaded surface 190, inner threaded surface 210, large fixed block 310, small fixed block 320, screw hole 330, arc-shaped protrusion 340, outer step surface 350. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0026] See also Figure 1 , which is a schematic structural diagram of a detachable ring frame for an optical fiber coil provided by the utility model.

[0027] Embodiment 1:

[0028] According to the drawings, it can be known that the detachable ring frame for the optical fiber coil provided by the utility model includes three components: a first flange 100, a second flange 200, and a fixed block 300.

[0029] The first flange 100 and the second flange 200 are provided with a through hole 110 and an annular groove 120 for accommodating the fixed block 300 in the middle. The through hole 110 is circular, and the annular groove 120 is distributed on the outer side thereof with the through hole 110 as the center.

[0030] The fixed block 300 includes a plurality of large fixed blocks 310 and a plurality of small fixed blocks 320, both ends of which are respectively inserted into the annular grooves 120 of the first flange 100 and the second flange 200, and a gap is provided between the plurality of large fixed blocks 310 and the plurality of small fixed blocks 320 and they mutually form a circular ring structure;

[0031] The first flange 100, the second flange 200, a plurality of large fixed blocks 310 and a plurality of small fixed blocks 320 are connected by a threaded structure to form a detachable ring frame.

[0032] Specifically, the thread structure may be that screw holes 330 are symmetrically provided at the upper and lower ends of the large fixed block 310 and the small fixed block 320;

[0033] The second screw holes 130 corresponding to the screw holes 330 are provided on the first flange 100 and the second flange 200 , and the second screw holes 130 are threadedly fixed to the screw holes 330 of the large fixed blocks 310 and the small fixed blocks 320 by a plurality of fasteners 400 .

[0034] Here, the fastener 400 in this example is preferably a screw.

[0035] The number of the large fixed blocks 310 and the small fixed blocks 210 can be increased as needed. If the number is increased too much, disassembly is convenient, but installation becomes complicated. Therefore, in this embodiment, the large fixed blocks 310 are preferably two, and the small fixed block 210 is preferably one;

[0036] The large fixed block 310 and the small fixed block 320 are arc-shaped, and the curvature of the small fixed block 320 is smaller than that of the large fixed block 310. In this solution, the curvature of the small fixed block 320 is preferably 1 / 4-3 / 4 of the curvature of the large fixed block 310, which can provide better disassembly of the frame and more convenient installation.

[0037] A plurality of large arc-shaped fixed blocks 310 and a plurality of small arc-shaped fixed blocks 320 are spliced ​​to form a circular ring structure, and the two ends are respectively inserted in the annular grooves 120 of the two flanges 100, and are detachably connected to the first flange 100 and the second flange 200 through a plurality of fasteners 400. A ring groove 500 is formed between the outer ring of the fixed block 300 and the first flange 100 and the second flange 200, i.e. a detachable skeleton. The detachable skeleton is assembled on a ring winding machine through a special clamp, and the optical fiber ring winding operation is performed in the ring groove 500.

[0038] The screw holes 330 at both ends of the large fixed block 310 and the small fixed block 320 in this solution are symmetrical structures, so after being connected to the second screw holes 130 of the flange 100 respectively, the structural reliability is higher.

[0039] In actual application, one end of a plurality of large fixed blocks 310 and a plurality of small fixed blocks 220 are sequentially inserted into the annular groove 120 of the first flange 100, a gap is provided between the plurality of large fixed blocks 310 and the plurality of small fixed blocks 220 and they are spliced ​​to form a ring, and then the annular groove 120 of the second flange 200 is inserted into the other end of the plurality of large fixed blocks 310 and the plurality of small fixed blocks 220, and finally the flange is threadedly connected with the plurality of large fixed blocks 310 and the plurality of small fixed blocks 220 through the fastener 400, and the skeleton assembly is completed. After the skeleton assembly is completed, the skeleton is placed on the winding shaft fixture of the winding machine for winding. After the winding is completed, the ring is cured. After the curing of the optical fiber coil is completed, The fasteners 400 at both ends of the fixed block 300 are disassembled, and then the first flange 100 and the second flange 200 are removed. At this time, the two ends of the fixed block 300 are separated from the annular groove 120 of the flange. Since there is a gap between the several small fixed blocks 320 and the several large fixed blocks 310, and the several small fixed blocks 320 and the several large fixed blocks 310 have lost the connection support of the flange, the several small fixed blocks 320 and the several large fixed blocks 310 move toward the gap between each other, that is, the outer ring diameter of the spliced ​​fixed block 300 is reduced, and the optical fiber coil loses the support of the several small fixed blocks 320 and the several large fixed blocks 310. At this time, the optical fiber coil can fall naturally, and the finished product of the boneless optical fiber coil can be obtained. In the whole process, the optical fiber coil is almost not affected by the large additional force, thereby reducing the output risk of the optical fiber coil.

[0040] In order to further improve the structural stability and reliability of the connection between the first flange 100, the second flange 200 and the fixed block 300;

[0041] like Figure 3 , Figure 4Arc-shaped protrusions 340 are provided at the top and bottom of the plurality of large fixed blocks 310 and the plurality of small fixed blocks 320, and a cylindrical hole section 150 corresponding to the arc-shaped protrusion 340 is provided at the bottom of the annular groove 120 on the first flange 100 and the second flange 200. An outer step surface 350 is formed between the arc-shaped protrusion 340 and the large fixed blocks 310 and the small fixed blocks 320, and an inner step surface 160 is formed between the cylindrical hole section 150 and the annular groove 120. By inserting the two ends of the large fixed block 310 and the small fixed block 320 into the annular groove 120 of the first flange 100 and the second flange 200, the arc-shaped protrusion 340 can be placed in the arc hole section 150 as a whole, and the inner step surface 160 abuts against the outer step surface 350.

[0042] The arc-shaped protrusion 340 cooperates with the fixed block 300 to form a stepped structure, and the cylindrical hole section 150 cooperates with the annular groove 120 to form a stepped structure. During actual assembly, the inner step surface 160 and the outer step surface 350 can be pressed against each other through the threaded connection of the fastener 400. The stability of the structure can be greatly improved through the multi-level mutual abutment structure, so that the fixed block 300 can be stably and reliably placed in the annular groove 120.

[0043] Embodiment 2:

[0044] In order to improve the convenience of disassembling the entire skeleton, this embodiment makes changes to the thread structure on the basis of Embodiment 1 to improve the convenience of operating the skeleton. The remaining structures are the same and will not be described in detail here.

[0045] like Figure 5 , Figure 6 A column 170 is provided at one end of the first flange 100 with the through hole 110 as the center, and a second through hole 180 is penetrated through the column 170, and the second through hole 180 is communicated with the through hole 110. An external thread surface 190 is provided on the outer peripheral surface of the column 170, and an internal thread surface 210 matching the external thread surface 190 is provided on the inner wall of the through hole 110 on the second flange 220;

[0046] like Figure 7 By screwing the inner thread surface 210 of the second flange 220 with the outer thread surface 190 of the column 170 of the first flange 100 , both ends of the plurality of large fixed blocks 310 and the plurality of small fixed blocks 320 can be respectively pressed against the annular groove 120 .

[0047] In practical application, first, one end of a plurality of large fixed blocks 310 and a plurality of small fixed blocks 320 is placed in the annular groove 120 of the first flange 100, and then the internal thread surface 210 of the second flange 220 is aligned with the external thread surface 190 of the cylinder 170 on the first flange 100, and the external thread surface 190 is engaged with the internal thread surface 210 by rotation, so that the other ends of the large fixed blocks 310 and the small fixed blocks 320 are extended into the annular groove 120 of the second flange 220, and the rotation is continued, so that the first flange 100 and the second flange 220 press the large fixed blocks 310 and the small fixed blocks 320 between them.

[0048] The above-mentioned threaded structure is simple to install and easy to operate. The skeleton can be installed by screwing the external thread surface 190 and the internal thread surface 210 together. When disassembly is required, the first flange 100 and the second flange 200 can be disassembled by rotating in the opposite direction, and then the first flange 100 and the second flange 200 are removed. At this time, the optical fiber coil can fall naturally, and the finished product of the debonded optical fiber coil can be obtained, which is consistent with the above-mentioned principle process and will not be repeated here.

[0049] Embodiment 3:

[0050] In this embodiment, based on the second embodiment, the annular groove 210 on the first flange 100 is changed to position the plurality of large fixed blocks 310 and the plurality of small fixed blocks 320 to ensure that the gaps between the plurality of large fixed blocks 310 and the plurality of small fixed blocks 320 are fixed during installation. The rest of the structure is the same and will not be described in detail here.

[0051] like Figure 8 The annular groove 120 on the first flange 100 is designed to be segmented, and the annular groove 120 is composed of a plurality of large arc grooves 121 corresponding to the large fixed block 310, and a plurality of small arc grooves 122 corresponding to the small fixed block 320. Gaps are provided between the plurality of large arc grooves 121 and the plurality of small arc grooves 122, and they mutually form a circular ring structure corresponding to the annular groove 120 on the second flange 220;

[0052] Through the above-mentioned large arc groove 121, small arc groove 122 and a plurality of large fixed blocks 310 and a plurality of small fixed blocks 320, in actual application, firstly, one end of a plurality of large fixed blocks 310 and a plurality of small fixed blocks 320 is inserted into the large arc groove 121 and the small arc groove 122, and the large fixed blocks 310 and a plurality of small fixed blocks 320 are immovable in the arc groove, and the large arc groove 121 and the small arc groove 122 play a positioning role for the large fixed blocks 310 and the small fixed blocks 320, so as to avoid the large fixed blocks 310 and the small fixed blocks 320 from moving during installation, resulting in uneven gaps between the fixed blocks, and then the second flange 200 is screwed to the first flange 100, and the other ends of the large fixed blocks 310 and the small fixed blocks 320 are inserted into the annular groove 120 of the second flange 200, so that the structure can fix the gaps between the plurality of large fixed blocks 310 and the small fixed blocks 320.

[0053] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A detachable ring frame for an optical fiber coil, characterized in that: It comprises a first flange, a second flange, and a fixed block. The first flange and the second flange are provided with a through hole and an annular groove for accommodating the fixed block in the middle, and the annular groove is distributed on the outer side with the through hole as the center. The fixed block comprises a plurality of large fixed blocks and a plurality of small fixed blocks. The two ends of the plurality of large fixed blocks and the plurality of small fixed blocks are respectively inserted in the annular grooves of the first flange and the second flange. Gaps are provided between the plurality of large fixed blocks and the plurality of small fixed blocks and they form a circular ring structure with each other. The first flange, the second flange, the plurality of large fixed blocks and the plurality of small fixed blocks are connected by a threaded structure to form a detachable ring skeleton. A column is provided at one end of the first flange with the through hole as the center, the column is penetrated by a second through hole, the second through hole is connected with the through hole, an outer peripheral surface of the column is provided with an external thread surface, and an inner wall of the through hole on the second flange is provided with an internal thread surface matching the external thread surface; By screwing the inner thread surface of the second flange plate with the outer thread surface of the column of the first flange plate, the two ends of the plurality of large fixed blocks and the plurality of small fixed blocks can be respectively pressed against the annular groove; First, place one end of a plurality of large fixed blocks and a plurality of small fixed blocks in the annular groove of the first flange, then align the internal thread surface of the second flange with the external thread surface of the column on the first flange, and engage the external thread surface with the internal thread surface by rotation, so that the other ends of the large fixed blocks and the small fixed blocks extend into the annular groove of the second flange, and continue to rotate so that the first flange and the second flange press the large fixed blocks and the small fixed blocks therebetween.

2. The detachable ring frame for optical fiber coil according to claim 1, characterized in that: The threaded structure is that screw holes are symmetrically provided at the upper and lower ends of the large fixed block and the small fixed block, and second screw holes corresponding to the screw holes are provided on the first flange and the second flange, and the second screw holes are threadedly fixed to the screw holes of several large fixed blocks and several small fixed blocks through several fasteners.

3. The detachable ring frame for optical fiber coil according to claim 1, characterized in that: The outer ring of the stator block can form an annular groove with the first flange and the second flange.

4. The detachable ring frame for optical fiber coil according to claim 2, characterized in that: The tops and bottoms of the plurality of large fixed blocks and the plurality of small fixed blocks are provided with arc-shaped protrusions, the bottoms of the annular grooves on the first flange and the second flange are provided with cylindrical hole sections corresponding to the arc-shaped protrusions, outer step surfaces are formed between the arc-shaped protrusions and the large fixed blocks and the small fixed blocks, and inner step surfaces are formed between the cylindrical hole sections and the annular grooves. By inserting the two ends of the large fixed blocks and the small fixed blocks into the annular grooves of the first flange and the second flange, the arc-shaped protrusions as a whole can be placed in the arc-shaped hole sections, and the inner step surfaces abut against the outer step surfaces.

5. The detachable ring frame for optical fiber coil according to claim 1, characterized in that: The annular groove on the first flange is composed of a plurality of large arc grooves corresponding to the large fixed block and a plurality of small arc grooves corresponding to the small fixed block. Gaps are arranged between the plurality of large arc grooves and the plurality of small arc grooves, and they mutually form an annular structure corresponding to the annular groove on the second flange. The large arc groove and the small arc groove are used to position the large fixed block and the small positioning block so that the gap distance between the plurality of large fixed blocks and the plurality of small positioning blocks is fixed.

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