Compression recovery device for cable lead sheath and cable repair tool
The design of the compression recovery device solves the problems of high pull-out mold resistance and high mold cost in cable joint repair, enabling single-person operation and adaptability to multiple cable specifications, thus reducing labor consumption and mold costs.
Patent Information
- Application Number
- CN202510866743.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-26
- Publication Date
- 2025-10-31
AI Technical Summary
In the current process of repairing cable expansion joints, the pulling mold has high resistance to movement, consumes a lot of manpower, requires multiple people to operate, and different specifications of cables require different molds, resulting in high costs.
A compression recovery device is designed, comprising a main body, a chuck, and rollers. By setting an annular array of through slots and guide slots on the base plate, and by adjusting the chuck and rollers in coordination, it can achieve single-person operation and adapt to the compression recovery of cables of different diameters.
It reduces the workload of operators, decreases manpower consumption, is applicable to cables of different diameters, reduces mold processing costs, and improves versatility and economy.
Smart Images
Figure CN120879424A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cable repair technology, and in particular to a compression and restoration device and cable repair tool for cable lead sheaths. Background Technology
[0002] During the repair of cable expansion joints, the lead sheath restoration step is usually involved. Lead sheath needs to be welded to the fault location of the cable. After welding, the lead sheath may be too large in outer diameter or not fully fit the cable substrate. To address this, a device called a "pull-out die" is often used to reduce the outer diameter of the lead sheath. The principle is to manually move the pull-out die to forcibly reduce the outer diameter of the lead sheath to a concentric circle shape that roughly matches the outer edge of the cable.
[0003] However, the resistance encountered during the pulling of the drawing die is significant, which is extremely physically demanding for the construction workers. It often takes two to three people to complete the task of restoring a section of lead sheath. This not only consumes a lot of labor costs but also affects the progress of subsequent work. In addition, since different specifications of cables require different sizes of lead sheaths, it is necessary to design and use drawing dies with different inner diameters, which results in relatively expensive die processing costs. Summary of the Invention
[0004] Therefore, the technical problem to be solved by the present invention is to overcome the fact that in the process of repairing cable flexible joints in the prior art, pulling is often used to reduce the outer diameter of the lead sheath. The resistance encountered during the movement of the pulling die is large, which consumes a lot of physical strength of the construction personnel. In the process of restoring a section of lead sheath, it is often necessary to complete this task, which not only consumes a lot of labor costs, but also affects the development of other subsequent work. At the same time, since different specifications of cables require different sizes of lead sheaths, it is necessary to design and use pulling dies with different inner diameters, which results in relatively expensive die processing costs.
[0005] To solve the above-mentioned technical problems, the present invention provides a compaction and restoration device for lead sheaths of cables, comprising, The main body includes a first substrate and a second substrate arranged in parallel. The first substrate and the second substrate are respectively provided with a semi-circular first notch and a second notch. The first notch and the second notch are coaxial. The inner walls of the first notch and the second notch are respectively provided with a plurality of first through grooves and second through grooves arranged evenly around their circumference. The projections of the first through grooves and the second through grooves on the horizontal plane do not coincide. The first substrate and the second substrate are respectively provided with a first arc groove and a second arc groove. The first arc groove and the second arc groove are respectively concentric with the first notch and the second notch. At the same time, a connecting plate near the first notch / second notch and a handle located on the other side are vertically connected between the first substrate and the second substrate. The chuck is semi-circular in shape. One chuck is coaxially disposed on the first substrate and the second substrate respectively. The two chucks are connected to the first substrate and the second substrate respectively through the first arc groove and the second arc groove. The chuck is provided with a plurality of guide grooves corresponding to the positions of each first through groove / second through groove. The rollers are provided in multiple manner, and the two ends of the multiple rollers are respectively rotatably connected to a first rotating shaft and a second rotating shaft. The first rotating shaft and the second rotating shaft are respectively slidably connected in a set of corresponding first through grooves and second through grooves, and respectively extend into two guide grooves corresponding to the first through groove and the second through groove.
[0006] In one embodiment of the present invention, the free ends of the first and second rotating shafts are both machined with ball heads, and the ball heads are located in the guide groove.
[0007] In one embodiment of the present invention, both the first rotating shaft and the second rotating shaft are fitted with rubber rings located between the roller and the first substrate and the second substrate, respectively.
[0008] In one embodiment of the present invention, the first substrate and the second substrate are both semi-circular plates, including an arcuate side and a straight side. The first notch and the second notch are respectively opened on one side of the straight side of the first substrate and the second substrate, and a connecting portion extends outward from the arcuate surface of the first substrate and the second substrate. The handle is vertically connected between the two connecting portions.
[0009] In one embodiment of the present invention, at least two connecting plates are provided and symmetrically arranged on both sides of the first notch and the second notch. The connecting plates are parallel and flush with the straight side, and at least two connecting holes are symmetrically opened on each connecting plate.
[0010] In one embodiment of the present invention, the chuck is provided with at least one connecting seat, the connecting seat having a through hole perpendicular to the chuck, and the chuck being connected to a first arc groove / second arc groove at the through hole by fasteners.
[0011] In one embodiment of the present invention, a shaft hole is coaxially opened at both ends of the roller, and a bearing is coaxially arranged in each of the two shaft holes. The first rotating shaft and the second rotating shaft are respectively connected to the two bearings.
[0012] In one embodiment of the present invention, the roller is a cylindrical structure with a tapered end.
[0013] In one embodiment of the present invention, the included angle between the guide groove and the first through groove / second through groove is between 0° and 90°.
[0014] A cable repair tool includes a compression and restoration device for the lead sheath of a cable as described in any of the preceding claims.
[0015] The technical solution of the present invention has the following advantages compared with the prior art: The present invention discloses a compression and restoration device and cable repair tool for lead sheathing of cables. The device comprises a main body that can be assembled using fasteners. Through slots arranged in a circular array on two base plates of the main body, with each slot on one base plate rotated relative to the slot on the other base plate by a certain angle, allow rollers mounted at their respective ends in the corresponding slots via rotating shafts to have a certain oblique angle. This results in a roller structure that converts rotational force into an axial driving force to propel the entire device along the cable's axial direction. Furthermore, a chuck is rotatably mounted on each of the two base plates of the main body. Guide slots corresponding to the positions of the through slots are provided on the chuck. The relative movement of the guide slot sidewalls and the rotating shaft during chuck rotation adjusts the position of the rollers, allowing the working inner diameter of the multiple rollers in the circular array to accommodate cables of different diameters. This compression and restoration device can be installed and operated by a single person. The repair process is completed by rolling with rollers, which not only reduces the workload of the operator, but also can evenly compress the lead sheath, making the outer diameter of the lead sheath concentric with the outer edge of the submarine cable substrate without damaging the lead sheath. At the same time, it can be applied to cables of different diameters, and has high versatility and economy. Attached Figure Description
[0016] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein... Figure 1 This is a schematic diagram of the assembled structure of the compression and restoration device for cable lead sheath according to a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the rollers of the clamping and restoring device for cable lead sheaths of the preferred embodiment of the present invention after they are mounted on the main body; Figure 3 This is a schematic diagram of the main body of the compression and restoration device for cable lead sheaths according to a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of the chuck structure of a preferred embodiment of the clamping and restoring device for cable lead sheaths; Figure 5 This is a schematic diagram of the structure of the roller of the compression and restoration device for cable lead sheath according to a preferred embodiment of the present invention; Figure 6 This is a schematic diagram of the main body of the compression and restoration device for cable lead sheath according to a preferred embodiment of the present invention after assembly. Figure 7 This is a schematic diagram of the relative positions and orientations of the rollers after assembly of the compression and restoration device for cable lead sheaths according to a preferred embodiment of the present invention.
[0017] Explanation of reference numerals in the accompanying drawings: 1. Main body; 11. First substrate; 111. First notch; 112. First through groove; 113. First arc groove; 12. Second substrate; 121. Second notch; 122. Second through groove; 123. Second arc groove; 13. Connecting plate; 131. Connecting hole; 14. Handle; 2. Chuck; 21. Guide groove; 22. Connecting seat; 3. Roller; 31. First rotating shaft; 32. Second rotating shaft; 4. Rubber ring. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.
[0019] Example 1: Refer to Figures 1-7 As shown, a compression and restoration device for cable lead sheaths according to the present invention includes, The main body 1 includes a first substrate 11 and a second substrate 12 arranged in parallel. The first substrate 11 and the second substrate 12 are respectively provided with a semi-circular first notch 111 and a second notch 121. The first notch 111 and the second notch 121 are coaxial. The inner walls of the first notch 111 and the second notch 121 are respectively provided with a plurality of first through grooves 112 and second through grooves 122 arranged evenly around their circumference. The second through groove 122 is equivalent to the whole being rotated by a predetermined angle θ relative to the first through groove 112 in a clockwise or counterclockwise direction (i.e. the projections of the first through groove and the second through groove on the horizontal plane do not coincide). The first substrate 11 and the second substrate 12 are respectively provided with a first arc groove 113 and a second arc groove 123. The first arc groove 113 and the second arc groove 123 are respectively concentric with the first notch 111 and the second notch 121. At the same time, the first substrate 11 and the second substrate 12 are also vertically connected by a connecting plate 13 near the first notch 111 / second notch 121 and a handle 14 located on the other side. The chuck 2 is semi-circular in shape. A chuck 2 is coaxially disposed on the first substrate 11 and the second substrate 12 respectively. The two chucks 2 are connected to the first substrate 11 and the second substrate 12 respectively through the first arc groove 113 and the second arc groove 123. The chuck 2 is provided with a plurality of guide grooves 21 corresponding to the positions of the first through groove 112 / second through groove 122 respectively. Rollers 3, multiple rollers 3 are provided, and the two ends of multiple rollers 3 are respectively rotatably connected to a first rotating shaft 31 and a second rotating shaft 32. The first rotating shaft 31 and the second rotating shaft 32 are respectively slidably connected in a set of corresponding first through grooves 112 and second through grooves 122, and respectively extend into two guide grooves 21 corresponding to the first through groove 112 and the second through groove 122.
[0020] Specifically, this compression recovery device requires two main bodies 1 and chucks 2 and rollers 3 connected to the main bodies 1. During assembly, rollers 3 are first installed on the two main bodies 1 respectively, specifically by inserting the first rotating shaft 31 and the second rotating shaft 32 at both ends of each roller 3 into the corresponding sets of first through slots 112 and second through slots 122, ensuring that the installation directions of the rollers 3 are the same. Then, the chuck 2 is connected to the first arc groove 113 and the second arc groove 123 on the first base plate 11 and the second base plate 12 respectively using fasteners (at this time, the fasteners are not fully tightened, so that the position of the chuck 2 can be adjusted along the first arc groove 113 or the second arc groove 123), and the rotating shafts (i.e., the first rotating shaft 31 and the second rotating shaft 32) at both ends of each roller 3 are extended. The cable is inserted into a guide groove 21 on the chuck 2; then the two main bodies 1 are fitted onto the target position on the cable (specifically, fitted onto the cable through the first notch 111 and the second notch 121 on the main body 1), and the ends of the two main bodies 1 with connecting plates 13 are joined together and connected by fasteners; at this time, the first base plate 11 and the second base plate 12 of the two main bodies 1 are joined together to form two coaxially arranged annular base plates, and the two ends of the chuck 2 on the two main bodies 1 are also joined together to form two annular chucks coaxial with the above-mentioned annular base plates. At this time, the cable passes through the center holes of the two annular base plates and the two annular chucks in sequence, and multiple rollers 3 are arranged in annular array to form a roll forming structure for extruding and molding the lead sheath. Then, the positions of each roller 3 are adjusted. Specifically, the two annular chucks mentioned above are rotated. The annular chucks can adjust the positions of the first rotating shaft 31 and the second rotating shaft 32 along the first through groove 112 and the second through groove 122 respectively through the guide groove 21 on them, thereby changing the inner diameter of the roller pressing structure composed of rollers 3 to adapt to the outer diameter of the cable. After the adjustment is in place, the fasteners are tightened to fix the rollers 3, and the assembly is completed.
[0021] Specifically, the first through groove 112 and the second through groove 122 at the upper and lower positions are paired together. Since the second through groove 122 has rotated a certain angle relative to the first through groove 112, when the roller 3 is installed into the corresponding first through groove 112 and second through groove 122, the roller 3 as a whole has a certain oblique angle. Specifically, it has a certain oblique angle relative to the axis of the main support formed by the connection of the two main bodies 1. In this way, when the operator applies a reverse force to the two handles 14 to rotate the device as a whole, the multiple rollers 3 arranged in a ring array can convert the rotational force into an axial driving force for the cable to move along the axial direction. At the same time, by coordinating the shape of the rollers 3 or adjusting the angle of the front and rear ends of the rollers 3 through the chuck 2, the inner hole of the roller pressing structure composed of multiple rollers 3 has a variable diameter structure. In this way, the outer diameter of the lead sheath can be extruded and formed through the above-mentioned variable diameter structure during the process of the device moving along the axial direction of the cable.
[0022] This invention discloses a compression and restoration device for lead sheathing of cables. It comprises a main body assembled with fasteners. The main body has two base plates with corresponding annularly arranged through slots. One through slot on one base plate is rotated relative to the other through slot by a certain angle, allowing rollers mounted at their ends in the corresponding through slots via rotating shafts to have a certain oblique angle. This results in a roller structure where multiple annularly arranged rollers form an axial driving force that converts rotational force into axial force to drive the entire device along the cable's axial direction. Furthermore, a chuck is rotatably mounted on each of the two base plates of the main body. Guide slots corresponding to the positions of the through slots are provided on the chuck. The relative movement of the guide slot sidewalls and the rotating shaft during chuck rotation adjusts the position of the rollers, allowing the working inner diameter of the multiple annularly arranged rollers to be adjusted to accommodate cables of different diameters. This compression and restoration device can be installed and operated by a single person. The repair process is completed by rolling with rollers, which not only reduces the workload of the operator, but also can evenly compress the lead sheath, making the outer diameter of the lead sheath concentric with the outer edge of the submarine cable substrate without damaging the lead sheath. At the same time, it can be applied to cables of different diameters, and has high versatility and economy.
[0023] Reference Figure 5 As shown, furthermore, the free ends of both the first rotating shaft 31 and the second rotating shaft 32 are machined with ball heads, which are located within the guide groove 21. Specifically, the diameters of the first rotating shaft 31 and the second rotating shaft 32 match the inner diameters of the first through groove 112 and the second through groove 122, and the diameter of the ball head matches the inner diameter of the guide groove 21. When installing the chuck 2, the arc surface of the ball head can serve as a guide, facilitating the fitting of the guide groove 21 of the chuck 2 onto the first rotating shaft 31 and the second rotating shaft 32.
[0024] Furthermore, both the first rotating shaft 31 and the second rotating shaft 32 are fitted with rubber rings 4, which are respectively located between the roller 3 and the first substrate 11 and the second substrate 12. It can be imagined that the rubber rings 4 at both ends of the roller 3 can prevent the roller 3 from directly contacting the first substrate 11 and the second substrate 12, thereby improving the service life of the roller 3 and the main body 1 structure and reducing the cost of using the device; and the rubber rings 4 can also provide a certain amount of damping during the rotation of the roller 3, so that when the operator rotates the device to a certain angle to switch hands, the device can remain in the original position and will not reverse, which facilitates the operator's subsequent operation and helps to improve work efficiency.
[0025] Reference Figures 1-4As shown, the first substrate 11 and the second substrate 12 are both semi-circular plates, including an arc side and a straight side. The first notch 111 and the second notch 121 are respectively opened on one side of the straight side of the first substrate 11 and the second substrate 12. The arc surface of the first substrate 11 and the second substrate 12 both have connecting portions extending outward, and the handle 14 is vertically connected between the two connecting portions.
[0026] Furthermore, at least two connecting plates 13 are provided and symmetrically arranged on both sides of the first notch 111 and the second notch 121. The connecting plates 13 are parallel and flush with the straight side, and at least two connecting holes 131 are symmetrically opened on each connecting plate 13. Specifically, after the two main bodies 1 are joined together at one end with the connecting plates 13, the connecting plates 13 correspond to each other and fit together. The two main bodies 1 can be connected by fasteners at the connecting holes 131 on the connecting plates 13.
[0027] Furthermore, the chuck 2 is provided with at least one connecting seat 22, and the connecting seat 22 has a through hole perpendicular to the chuck 2. The chuck 2 is connected to the first arc groove 113 / second arc groove 123 at the through hole by fasteners. Specifically, at least one connecting seat 22 is provided on the outer arc surface of the chuck 2. The connecting end of the connecting seat 22 has a cylindrical support part, and the support part has a through hole, which is connected to the first arc groove 113 / second arc groove 123 by fasteners. Specifically, the thickness of the support part is greater than the thickness of the chuck 2. After the chuck 2 is connected to the main body 1, the chuck 2 will have a certain distance and space from the first substrate 11 or the second substrate 12, which facilitates the operator to grip the chuck 2 and rotate it.
[0028] Furthermore, each end of the roller 3 has a coaxial shaft hole, and a bearing is coaxially installed in each shaft hole. The first rotating shaft 31 and the second rotating shaft 32 are respectively connected to the two bearings. Specifically, a structure can also be adopted in which a central through hole is opened on the roller 3 and a rotating shaft is rotatably installed in the central through hole through a bearing.
[0029] Furthermore, the roller 3 is a cylindrical structure with a tapered end or a circular arc surface with an elliptical shape at one end.
[0030] Furthermore, the included angle between the guide groove 21 and the first through groove 112 / second through groove 122 is between 0° and 90°. During the rotation of the chuck 2, the inner wall of the guide groove 21 plays an oblique guiding role, pushing the first rotating shaft 31 / second rotating shaft 32 to move in the first through groove 112 / second through groove 122, thereby allowing the position of the roller 3 to be radially adjusted.
[0031] Example 2: The present invention also discloses a cable repair tool, including a compression and restoration device for cable lead sheath as described in Example 1.
[0032] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.
Claims
1. A compression and recovery device for lead sheaths of cables, characterized in that: include, The main body includes a first substrate and a second substrate arranged in parallel. The first substrate and the second substrate are respectively provided with a semi-circular first notch and a second notch. The first notch and the second notch are coaxial. The inner walls of the first notch and the second notch are respectively provided with a plurality of first through grooves and second through grooves arranged evenly around their circumference. The projections of the first through grooves and the second through grooves on the horizontal plane do not coincide. The first substrate and the second substrate are respectively provided with a first arc groove and a second arc groove. The first arc groove and the second arc groove are respectively concentric with the first notch and the second notch. At the same time, a connecting plate near the first notch / second notch and a handle located on the other side are vertically connected between the first substrate and the second substrate. The chuck is semi-circular in shape. One chuck is coaxially disposed on the first substrate and the second substrate respectively. The two chucks are connected to the first substrate and the second substrate respectively through the first arc groove and the second arc groove. The chuck is provided with a plurality of guide grooves corresponding to the positions of each first through groove / second through groove. The rollers are provided in multiple manner, and the two ends of the multiple rollers are respectively rotatably connected to a first rotating shaft and a second rotating shaft. The first rotating shaft and the second rotating shaft are respectively slidably connected in a set of corresponding first through grooves and second through grooves, and respectively extend into two guide grooves corresponding to the first through groove and the second through groove.
2. The compression and restoration device for cable lead sheaths according to claim 1, characterized in that: Both the first and second rotating shafts have ball heads machined at their free ends, and the ball heads are located within the guide groove.
3. The compression and restoration device for cable lead sheaths according to claim 1, characterized in that: Both the first and second rotating shafts are fitted with rubber rings located between the roller and the first and second substrates, respectively.
4. The compression and restoration device for cable lead sheaths according to claim 1, characterized in that: Both the first substrate and the second substrate are semi-circular plates, including an arc-shaped side and a straight side. The first notch and the second notch are respectively opened on one side of the straight side of the first substrate and the second substrate, and a connecting part extends outward from the arc surface of the first substrate and the second substrate. The handle is vertically connected between the two connecting parts.
5. The compression and restoration device for cable lead sheaths according to claim 4, characterized in that: The connecting plates are provided in at least two and symmetrically arranged on both sides of the first and second notches. The connecting plates are parallel and flush with the straight side, and each connecting plate is symmetrically provided with at least two connecting holes.
6. The compression and restoration device for cable lead sheaths according to claim 1, characterized in that: The chuck is provided with at least one connecting seat, and the connecting seat has a through hole perpendicular to the chuck. The chuck is connected to the first arc groove / second arc groove at the through hole by fasteners.
7. The compression and restoration device for cable lead sheaths according to claim 1, characterized in that: The roller has a shaft hole coaxially opened at both ends, and a bearing is coaxially arranged in each of the two shaft holes. The first rotating shaft and the second rotating shaft are respectively connected to the two bearings.
8. The compression and restoration device for cable lead sheaths according to claim 1, characterized in that: The roller is a cylindrical structure with a tapered end.
9. The compression and restoration device for cable lead sheaths according to claim 1, characterized in that: The angle between the guide groove and the first through groove / second through groove is between 0° and 90°.
10. A cable repair tool, characterized in that: Includes the compression and recovery device for cable lead sheaths as described in any one of claims 1-9.