A retractable loose-winding reel for testing optical cables

Abstract

The present invention discloses a retractable loose winding reel for testing optical cables, comprising a fixed side plate and a central cylinder composed of a plurality of central cylinder plates, one end of the central cylinder plate is axially connected to the first fixed side plate, and the first and second fixed side plates are fixedly connected to the central axis; a positioning plate and a support plate are sleeved on the central axis, the central cylinder plate passes through the positioning plate, and the support plate is fixedly sleeved on the central axis with an adjustable axial position; a plurality of support rods are matched between the support plate and the central cylinder plate, the inner end of the support rod is axially connected to the support plate, and the outer end is matched with the central cylinder plate; the smooth limit pin of the support rod is smoothly limited in the limit guide groove of the positioning plate, and a tension spring is arranged on the inner side of the central cylinder plate, and the other end of the tension spring is hinged to the central axis. The reel structure of the present invention is ingenious and reasonable, and does not need to go through the traditional complicated disassembly and assembly process. It only needs to be assembled, and after adjusting the width of the take-up reel, the position of the support plate can be adjusted to realize the reel contraction to make the optical cable in a loose winding state, which is very time-saving and labor-saving.

Description

Technical Field

[0001] The present invention relates to a testing device, in particular to a reel for testing optical cables, on which the optical cables can be loosely wound to carry out corresponding performance tests. Background Art

[0002] With the development of modern science and technology, people's lives and work are increasingly inseparable from the Internet and communication, which has promoted the rapid development of optical communication technology. With the continuous requirements of technology development on the scale and speed of communication, people's requirements for the stability and reliability of optical communication are also constantly increasing. This requires us to put forward high requirements for the performance test of optical cables in the production of optical cable equipment. In the temperature cycle test link, the optical cable is required to be tested under the condition of loose winding on the reel. At present, the traditional optical cable temperature cycle test uses a reel, which is generally a detachable wooden reel. This detachable wooden reel is composed of side panels, center tubes, screws, nuts, and washers. The center tube is formed by dozens of arc plates. Two side panels are fixed into the center tube by several screws, nuts, and washers. After the optical cable is wound on the wooden reel through the take-up equipment, the reel and the side need to be inverted, and all screws, nuts, and washers are removed, so as to separate and remove all the center tube plates, so that the optical cable is in a loose winding state. This traditional method is very difficult to achieve the loose winding form of the optical cable. Since the test requires the center tube diameter to be greater than 1 meter, the overall volume of the reel is very large, and there are many screws, nuts, gaskets, and center tube plates. When one part is removed, another part will collapse. Multiple workers are required to cooperate in one disassembly and assembly, which takes at least an hour. When the optical cable undergoes temperature cycle testing every day, workers need to disassemble and assemble the reel many times, which is very time-consuming. After multiple disassembly and assembly, the wooden reel is prone to deformation and damage, etc., and cannot meet the test requirements. It needs to be regularly scrapped and replaced, which is very uneconomical. It is very time-consuming, material-consuming, manpower and material resources to use wooden reels to meet the optical cable test requirements through disassembly and assembly. Therefore, a time-saving, material-saving, manpower and material-saving loose winding reel is needed to meet the current requirements of optical cable testing. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a retractable loose winding reel for optical cable testing with an ingenious and reasonable structure. It does not require the traditional complicated disassembly and assembly process. It only needs to be assembled, the width of the take-up reel is adjusted, and the position of the support plate is adjusted to achieve the reel contraction to make the optical cable into a loose winding state, which is very time-saving and labor-saving.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A retractable loose-winding reel for testing optical cables, comprising a first fixed side plate, a second fixed side plate and a central tube, wherein the central tube is composed of a plurality of central tube plates, one end of the central tube plate is axially connected to the first fixed side plate through a tube plate positioning shaft, and the other end of the central tube plate is matched and fitted with the second fixed side plate; an effective spacing is left between two adjacent central tube plates so that the central tube plates can be simultaneously flipped inwardly at an effective angle; the first fixed side plate and the second fixed side plate are respectively fixedly connected to the central axis;

[0006] A positioning plate is fixedly sleeved on the central axis between the first fixed plate and the second fixed plate so as to be able to adjust the axial position. The positioning plate is provided with a plurality of cylinder plate through holes matching the plurality of central cylinder plates. Each of the central cylinder plates passes through a corresponding cylinder plate through hole. The outward turning angle of the central cylinder plate is limited to a position perpendicular to the first fixed side plate by a cylinder plate limiting structure. At this time, the plurality of central cylinder plates just form the central cylinder surface of the cylinder, and at this time, the central axis is coaxial with the central cylinder.

[0007] A support plate is also provided between the positioning plate and the first fixed side plate, and the support plate can be fixedly sleeved on the central axis in an adjustable axial position; a plurality of support rods are matched and arranged between the support plate and the plurality of the central cylinder plates, and the projection of the support rods on the first fixed side plate is a radial extension, and the plurality of the support rods are always located on the same conical surface; the circumferential setting position of the support rod is the middle position of the circumference of each piece of the central cylinder plate; the inner end of the support rod is axially connected to the outer edge of the support plate, and the outer end matches the corresponding inner side of the central cylinder plate but is not connected; a smooth limit pin is provided in the middle of the support rod, and the axis of the smooth limit pin is perpendicular to the direction of the support rod and extends along the plane direction of the positioning plate The cam is provided with a plurality of support rod sliding grooves, and the plurality of support rods respectively match the plurality of support rod sliding grooves passing through the positioning plate, and a limiting guide groove extending radially is provided on the side wall of the supporting rod sliding groove, and the plurality of limiting guide grooves are matched with the smooth limiting pins on the plurality of supporting rods, so that the smooth limiting pins on the supporting rods can only slide radially in the limiting guide grooves, and the supporting rods can rotate with the smooth limiting pins as the axis; when the supporting plate is adjusted to move toward the second fixed side plate, the smooth limiting pin slides outwardly along the limiting guide groove, and the plurality of support rods open outward synchronously, and the plurality of support rods push the plurality of center cylinder plates to open outward to form a cylindrical center cylinder surface;

[0008] A through hole is provided on the first fixed side plate to facilitate the adjustment operation of the support plate;

[0009] Several of the central cylinder plates can flip inward with the cylinder plate positioning axis as the rotation axis to form a conical surface. A tension spring is arranged on the inner side of the central cylinder plate and at the far end relative to the cylinder plate positioning axis. One end of the tension spring is hinged to the inner side of the central cylinder plate, and the other end is hinged to the central axis. When the support plate is in a state without axial limit, the central cylinder plate flips inward under the action of the tension spring, and is pushed by the support rod to move toward the first fixed side plate.

[0010] More preferably, the central tube is composed of six central tube plates with the same circumferential width, six tube plate through holes are matched on the positioning plate, and six support rods are matched on the outer edge of the support plate to match the inner sides of the six central tube plates respectively.

[0011] More preferably, the support plate is provided with a support plate fixing flange on a side facing the first fixed side plate, and a plurality of support plate fixing screws are radially provided on the support plate fixing flange, and the support plate is locked and fixedly sleeved on the central axis by tightening the support plate fixing screws, and when the support plate fixing screws are loosened, the support plate is in a state without axial limitation;

[0012] The positioning plate is provided with a positioning plate fixing flange on the side facing the second fixed side plate, and a plurality of positioning plate fixing screws are radially arranged on the positioning plate fixing flange. The positioning plate is locked and fixedly sleeved on the central axis by tightening the positioning plate fixing screws.

[0013] More preferably, the outer edge of the cylinder plate through hole serves as the cylinder plate limiting structure for limiting the center cylinder plate from flipping outward.

[0014] The retractable loose winding reel for testing optical cables of the present invention perfectly solves the problem of time-consuming, labor-intensive and complicated procedures from cable winding to loose winding of optical cable loose winding reels through an ingenious internal linkage structure. When the retractable loose winding reel of the present invention is used to wind the cable, the support rod is pushed toward the second fixed side plate and then locked and fixed. At this time, a number of support stems are opened outward to push the central cylinder plate to flip outward. The central cylinder plate is limited to the cylinder plate limiting structure to form the central cylinder surface of the cylinder. Then, the reel can be used for cable winding in this state. The loading amount can be adjusted and controlled by adjusting the axial position of the positioning plate.

[0015] When the cable winding is completed and the support of the center tube needs to be removed to enter the loose winding test, just loosen the locked support plate (loosen the support plate fixing screws), and the support plate is in a state without axial limit. At this time, the center tube plate flips inward under the action of the tension spring, and the support plate is pushed to move toward the first fixed side plate through the support rod. After the center tube plate flips inward, the wound optical cable is separated from the support of the center tube and enters the loose winding test state. The ingenious design of the internal linkage structure of the reel makes the entire operation process from cable winding to loose winding simple and fast, and no complicated assembly and disassembly procedures are required, which greatly improves work efficiency. It only takes 5 to 10 minutes to adjust the reel to shrink the optical cable to the loose winding state, which is very quick and convenient. At the same time, the operation of the reel is very labor-saving, and the labor intensity is greatly reduced. Because the entire operation process does not require the disassembly of parts, it also avoids the influence of adverse factors such as the loss of parts and accidental damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the structural schematic diagrams of the retractable loose-winding reel for testing optical cables of the present invention.

[0017] Figure 2 The figure is a schematic cross-sectional view of the retractable loose-winding reel for testing optical cables of the present invention.

[0018] Figure 3 This is the second structural schematic diagram of the retractable loose-winding reel for testing optical cables of the present invention (axonometric view).

[0019] Figure 4 This is a schematic diagram of the retractable loose-winding reel for testing optical cables of the present invention after the cables are wound and loaded onto the reel (the optical cable is in normal winding state).

[0020] Figure 5 It is a schematic diagram of the central cylinder plate of the retractable loose-winding reel for testing optical cables of the present invention after being turned inwards (optical cable loose-winding state).

[0021] Figure 6a , 6b 6a is a main view, 6b is an AA section view, and 6c is an axonometric view.

[0022] Figure 7a , 7b , 7c, and 7d are schematic diagrams of the structure of the positioning plate, 7a is the main view, 7b is the BB section view, 7c is the axonometric view, and 7d is the partial enlarged view of the C part.

[0023] Figure 8 This is a schematic diagram of the structure of the central tube (consisting of six central tube plates).

[0024] In the figure:

[0025] 1. First fixed side plate 101, outer ring

[0026] 102, center plate 103, connecting ribs

[0027] 2. Center cylinder plate 3. Extension spring

[0028] 4. Central axis 5. Support plate

[0029] 6. Support rod 7. Positioning plate

[0030] 71, support rod sliding slot 701, cylinder plate through hole

[0031] 7011, outer edge of the through hole of the cylinder plate 702, limiting guide groove

[0032] 8. Second fixed side plate 9. Second fixed side plate fixing flange

[0033] 10. Positioning plate fixing flange 11. Support plate fixing flange

[0034] 12. Cylinder plate positioning shaft 13. Support rod positioning shaft

[0035] 14. Smooth limit pin DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] Figure 1 , Figure 2 , Figure 3 A retractable loose-winding reel for testing optical cables is shown, comprising a first fixed side plate 1, a second fixed side plate 8 and a central tube, wherein the central tube is composed of six central tube plates 2 with the same circumferential width (such as Figure 8 As shown), one end of the central cylinder plate 2 is axially connected to the first fixed side plate 1 through the cylinder plate positioning shaft 12, and the other end of the central cylinder plate 2 is matched and fitted with the second fixed side plate 8; an effective spacing is left between two adjacent central cylinder plates 2 so that the central cylinder plates 2 can be simultaneously flipped inwardly at an effective angle (in use, so that the mounted optical cable can be in a loose winding state required by the test), as shown Figure 8 As shown; the first fixed side panel 1 and the second fixed side panel 8 are respectively fixedly connected to the central axis 4; a second fixed side panel fixing flange 9 is provided at the inner center position of the second fixed side panel 8, and after being plugged into the central axis 4, the second fixed side panel 8 is fixedly connected to the central axis 4 by side panel fixing screws arranged in a radial threaded connection. Such a fixing structure is convenient for later disassembly, assembly and maintenance.

[0038] Two positioning plate fixing screws are symmetrically arranged in the radial direction through threaded connection

[0039] like Figure 3As shown, the first fixed side plate 1 comprises an outer ring 101 and a center plate 102, six groups of radially extending connecting ribs 103 are arranged between the outer ring and the center plate, each group of connecting ribs 103 is matched and arranged at the circumferential middle position of the corresponding center cylinder plate 2, and a cylinder plate positioning shaft 12 is arranged at the position where each group of connecting ribs 103 matches the matching center cylinder plate 2, and the two ends of the cylinder plate positioning shaft 12 are rotatably arranged on the two connecting ribs 103 of the group. The main body of the first fixed side plate 1 is in the shape of a wheel hub, and there are neutral through holes between the outer ring 101 and the center plate 102 except for the six groups of connecting ribs 103, which is very convenient for the operator to perform adjustment operations inside the plate.

[0040] Of course, the structural form in which one end of the central cylinder plate 2 is axially connected to the first fixed side plate 1 through the cylinder plate positioning shaft 12 can also be other conventional forms. For example, six lug shaft seats are fixedly arranged on the inner side of the first fixed side plate 1 at a position matching the position where the central cylinder plate 2 is arranged, and the cylinder plate positioning shaft 12 is rotatably arranged in the lug shaft seat, and the central cylinder plate 2 is axially connected to the first fixed side plate 1 through the positioning shaft 12.

[0041] like Figure 7a , 7b As shown in 7c, a positioning plate 7 is fixedly sleeved on the central axis 4 between the first fixing plate 1 and the second fixing plate 8 so as to be able to adjust the axial position. The positioning plate 7 is provided with a positioning plate fixing flange 10 on the side facing the second fixed side plate 8. Two positioning plate fixing screws are symmetrically provided on the positioning plate fixing flange 10 in a radial direction through threaded connection (of course, 3 or 4 positioning plate fixing screws can also be provided). The positioning plate 7 is locked and fixedly sleeved on the central axis 4 by tightening the positioning plate fixing screws. Of course, the structural form of the positioning plate fixing flange 10 and the positioning plate fixing screws can also be other conventional fixing forms with adjustable axial position, such as providing a limit nut on the central axis 4. By adjusting the axial position of the positioning plate 7, the loading amount of the disk during the disk test of the present invention can be adjusted and controlled.

[0042] The positioning plate 7 is provided with six cylinder plate through holes 701 matching the six central cylinder plates 2, each of the central cylinder plates 2 passes through the corresponding cylinder plate through hole 701, and the outward turning angle of the central cylinder plate 2 is limited to a position perpendicular to the first fixed side plate 1 by the cylinder plate limiting structure, and the outer edge 7011 of the cylinder plate through hole 701 serves as the cylinder plate limiting structure for limiting the outward turning of the central cylinder plate 2; at this time, the six central cylinder plates 2 just form the central cylinder surface of the cylinder, and at this time, the central axis 4 is coaxial with the central cylinder, such as Figure 2 and Figure 4 shown.

[0043] Of course, the above-mentioned cylinder plate limiting structure can also be other conventional forms. For example, a circle of limiting plates can be set on the inner side of the second fixed side plate 8 as a cylinder plate limiting structure for limiting the center cylinder plate 2 from flipping outward, as long as it can limit the angle of the center cylinder plate 2 flipping outward to the shape of a cylindrical center cylinder.

[0044] A support plate 5 is also provided between the positioning plate 7 and the first fixed side plate 1. Figure 6a , 6b As shown in 6c, the support plate 5 can be fixedly sleeved on the central axis 4 with an adjustable axial position, and its specific sleeve structure is: the support plate 5 is provided with a support plate fixing flange 11 on the side facing the first fixed side plate 1, and two support plate fixing screws are symmetrically arranged on the support plate fixing flange 11 along the radial direction through threaded connection (of course, 3 or 4 support plate fixing screws can also be provided), and the support plate 5 is locked and fixedly sleeved on the central axis by tightening the support plate fixing screws. When the support plate fixing screws are loosened, the support plate is in a state without axial limitation.

[0045] Six support rods 6 are matched and arranged between the support plate 5 and the six central cylinder plates, and the projection of the support rods 6 on the first fixed side plate 1 is radially extended, and the six support rods 6 are always located on the same conical surface; the circumferential setting position of the support rod 6 is the middle position of the circumference of each central cylinder plate 2; the inner end of the support rod 6 is axially connected to the outer edge of the support plate 5 through the support rod positioning shaft 13, and the outer end is matched with the corresponding inner side of the central cylinder plate 2 but not connected; a group of coaxial smooth limit pins 14 are arranged on the left and right sides of the middle of the support rod 6, and the axis of the smooth limit pin 14 is perpendicular to the direction of the support rod 6 and extends along the plane direction of the positioning plate 7, and six support rod sliding grooves 71 are arranged on the positioning plate 7, and the six support rods 6 are respectively matched with the six support rod sliding grooves 71 passing through the positioning plate 7, and a group of limit guide grooves 702 extending radially are symmetrically arranged on the side walls on both sides of the support rod sliding groove 71, such as Figure 7c , 7d shown.

[0046] The six groups of limit guide grooves 702 are matched with the six groups of smooth limit pins 14 on the six support rods 6, so that the smooth limit pins 14 on the support rods 6 can only slide radially in the limit guide grooves 702, and the support rods 6 can rotate with the smooth limit pins 14 as the axis; when the support plate 5 is adjusted to move toward the second fixed side plate 8, the smooth limit pins 14 slide outward along the limit guide grooves 702, and the six support rods 6 are synchronously opened outward, and the six support rods push the six central cylinder plates 2 to open outward to form a cylindrical central cylinder surface, such as Figure 2 , Figure 4 shown.

[0047] The six central cylinder plates 2 can be turned inwardly with the cylinder plate positioning axis 12 as the rotation axis to form a conical surface. A tension spring 3 is arranged on the inner side of the central cylinder plate 2 and at the far end of the cylinder plate positioning axis 12. Figure 2 As shown, one end of the tension spring 3 is hinged to the inner side of the central cylinder plate 2, and the other end is hinged to the central shaft 4; when the support plate 5 is in a state without axial limit, the central cylinder plate 2 is flipped inwardly under the action of the tension spring 3, and the support plate 5 is pushed to move toward the first fixed side plate 1 through the support rod 6, as shown in FIG. Figure 5 shown.

[0048] The above-mentioned center tube is composed of six center tube plates 2 with the same circumferential width, six tube plate through holes 701 are matched on the positioning plate 7, and six support rods 6 are matched on the outer edge of the support plate 5 to match the inner sides of the six center tube plates 2 respectively; the structure of this center tube can also be made into 4, 5 or 8 center tube plates 2 with the same circumferential width according to the size of the disk and specific requirements, and at the same time, the positions and quantities of corresponding structures such as the tube plate through holes 701, the support rods 6, and the support rod sliding grooves 71 are adaptively matched and adjusted.

[0049] The ingenious design of the internal linkage structure of the reel of the present invention makes the entire operation process from cable winding to loose winding simple and fast, and no longer requires complicated assembly and disassembly procedures, thereby greatly improving work efficiency. It only takes 5 to 10 minutes to adjust the reel to contract and put the optical cable in a loosely wound state, which is very quick and convenient. At the same time, the operation is very labor-saving and the labor intensity is greatly reduced, because the entire operation process does not require disassembly of parts, and the entire set of reel equipment is efficient, has a long service life, and is easy to manage.

[0050] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the definition of the claims.

Claims

1. A retractable loose-winding reel for testing an optical cable, comprising a first fixed side plate, a second fixed side plate and a central tube, characterized in that: The central cylinder is composed of a plurality of central cylinder plates, one end of which is axially connected to the first fixed side plate through a cylinder plate positioning shaft, and the other end of which is matched and fitted with the second fixed side plate; an effective spacing is left between two adjacent central cylinder plates so that the central cylinder plates can be simultaneously flipped inwardly at an effective angle; the first fixed side plate and the second fixed side plate are respectively fixedly connected to the central axis; A positioning plate is fixedly sleeved on the central axis between the first fixed side plate and the second fixed side plate so as to be able to adjust the axial position. The positioning plate is provided with a plurality of cylinder plate through holes matching with the plurality of central cylinder plates. Each of the central cylinder plates passes through the corresponding cylinder plate through holes. The outward turning angle of the central cylinder plate is limited to a position perpendicular to the first fixed side plate by a cylinder plate limiting structure. At this time, the plurality of central cylinder plates just form the central cylinder surface of the cylinder, and at this time, the central axis is coaxial with the central cylinder. A support plate is also provided between the positioning plate and the first fixed side plate, and the support plate can be fixedly sleeved on the central axis in an adjustable axial position; a plurality of support rods are matched and arranged between the support plate and the plurality of the central cylinder plates, and the projection of the support rods on the first fixed side plate is a radial extension, and the plurality of the support rods are always located on the same conical surface; the circumferential setting position of the support rod is the middle position of the circumference of each piece of the central cylinder plate; the inner end of the support rod is axially connected to the outer edge of the support plate, and the outer end matches the corresponding inner side of the central cylinder plate but is not connected; a smooth limit pin is provided in the middle of the support rod, and the axis of the smooth limit pin is perpendicular to the direction of the support rod and extends along the plane direction of the positioning plate The cam is provided with a plurality of support rod sliding grooves, and the plurality of support rods respectively match the plurality of support rod sliding grooves passing through the positioning plate, and a limiting guide groove extending radially is provided on the side wall of the supporting rod sliding groove, and the plurality of limiting guide grooves are matched with the smooth limiting pins on the plurality of supporting rods, so that the smooth limiting pins on the supporting rods can only slide radially in the limiting guide grooves, and the supporting rods can rotate with the smooth limiting pins as the axis; when the supporting plate is adjusted to move toward the second fixed side plate, the smooth limiting pin slides outwardly along the limiting guide groove, and the plurality of support rods open outward synchronously, and the plurality of support rods push the plurality of center cylinder plates to open outward to form a cylindrical center cylinder surface; A through hole is provided on the first fixed side plate to facilitate the adjustment operation of the support plate; Several of the central cylinder plates can flip inward with the cylinder plate positioning axis as the rotation axis to form a conical surface. A tension spring is arranged on the inner side of the central cylinder plate and at the far end relative to the cylinder plate positioning axis. One end of the tension spring is hinged to the inner side of the central cylinder plate, and the other end is hinged to the central axis. When the support plate is in a state without axial limit, the central cylinder plate flips inward under the action of the tension spring, and is pushed by the support rod to move toward the first fixed side plate.

2. The tray as claimed in claim 1, characterized in that: The central tube is composed of six central tube plates with the same circumferential width. The positioning plate is matched with six tube plate through holes. The outer edge of the support plate is matched with six support rods that match the inner sides of the six central tube plates respectively.

3. The tray as claimed in claim 1 or 2, characterized in that: The support plate is provided with a support plate fixing flange on one side facing the first fixed side plate, and a plurality of support plate fixing screws are radially arranged on the support plate fixing flange. The support plate is locked and fixedly sleeved on the central axis by tightening the support plate fixing screws. When the support plate fixing screws are loosened, the support plate is in a state without axial limitation. The positioning plate is provided with a positioning plate fixing flange on the side facing the second fixed side plate, and a plurality of positioning plate fixing screws are radially arranged on the positioning plate fixing flange. The positioning plate is locked and fixedly sleeved on the central axis by tightening the positioning plate fixing screws.

4. The tray as claimed in claim 1 or 2, characterized in that: The outer edge of the cylinder plate through hole serves as the cylinder plate limiting structure for limiting the center cylinder plate from turning outward.

5. The tray as claimed in claim 3, characterized in that: The outer edge of the cylinder plate through hole serves as the cylinder plate limiting structure for limiting the center cylinder plate from turning outward.

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