Armored Cable Stripping Device and Armored Cable Stripping Method

Abstract

The present invention discloses an armored cable stripping device, which includes a deformed frame in the shape of a rhombus formed by four connecting plates and a sleeve for sleeving on the armored cable. The ends of adjacent connecting plates are all rotatably connected together through a hinge shaft. A tightening bolt for tightly pressing the armored cable is threadedly connected to the side wall of the sleeve; the tops of the second hinge shaft and the fourth hinge shaft are respectively connected with left and right supports, and the left and right supports are respectively connected upward with left and right baffles, and gaps for passing through the armored cable are respectively provided in the middle parts of the left and right baffles; a screw rod is arranged between the first hinge shaft and the second hinge shaft. The present invention also discloses an armored cable stripping method using the above armored cable stripping device. By using the present invention, the force and the force application direction during the stripping process are uniform and stable, the cable will not be damaged, the stripping efficiency of the armored cable can be greatly improved, it is convenient to use, and it has good popularization and application value.

Description

Technical Field

[0001] The present invention relates to the technology of armoured cable stripping. Background Art

[0002] Armoured cables are formed by enclosing different material conductors in a metal sheath with insulating materials. Compared with ordinary cables, armoured cables are more robust and can also be bent. The metal sheath of an armoured cable can be sleeved on cables of any structure, which can significantly increase the mechanical strength of the cable, improve the cable's erosion resistance ability, enhance the cable's tensile strength and compressive strength, making the cable less likely to be damaged and extending the service life of the cable. It is particularly suitable for use in places vulnerable to external forces or erosion.

[0003] When stripping a cable, it is necessary to cut open the cable protective layer with a knife and then pull the cable protective layer off the cable inner core. When the cable protective layer is made of non-metallic materials such as rubber, the operator can manually separate the cut cable protective layer from the cable inner core. However, the strength of an armoured cable is very high, which significantly increases the difficulty of cable stripping. The difficulty for the operator to separate the cable protective layer from the cable inner core is greatly increased, and manual stripping is difficult to achieve. Using a tool to grip the metal sheath of the armoured cable for stripping, since this tool is both a component for gripping the armoured cable (the clamping force is perpendicular to the axis of the armoured cable) and a component for applying the stripping force (the stripping force is parallel to the axis of the armoured cable), the direction of force application is inclined and unstable, so it is very easy to damage the armoured cable. Currently, there is a lack of a device that facilitates the stripping of armoured cables. Summary of the Invention

[0004] The purpose of the present invention is to provide an armoured cable stripping device that can conveniently separate the cable protective layer from the cable inner core.

[0005] To achieve the above purpose, the armoured cable stripping device of the present invention includes a diamond-shaped deformation frame formed by four connecting plates and a sleeve for sleeving on the armoured cable. The ends of adjacent connecting plates are all rotatably connected together through a hinge shaft. A tightening bolt for pressing tightly against the armoured cable is threadedly connected to the side wall of the sleeve;

[0006] The four connecting plates include a left first connecting plate, a left second connecting plate, a right first connecting plate, and a right second connecting plate;

[0007] The top of the hinge shaft of the left first connecting plate and the left second connecting plate is connected to a left support. The left support is connected upward to a left baffle, and a notch for passing through the armoured cable is provided in the middle of the left baffle;

[0008] The top of the hinge shaft of the right first connecting plate and the right second connecting plate is connected to a right support. The right support is connected upward to a right baffle, and a notch for passing through the armoured cable is provided in the middle of the right baffle;

[0009] The hinge axis of the left first connecting plate and the right first connecting plate is the first hinge axis, the hinge axis of the left second connecting plate and the right second connecting plate is the second hinge axis, the hinge axis connecting the left first connecting plate and the left second connecting plate is the third hinge axis, and the hinge axis of the right first connecting plate and the right second connecting plate is the fourth hinge axis; A screw rod is passed between the first hinge axis and the second hinge axis. One end of the screw rod extends out of the second hinge axis and is connected with a nut, and the other end of the screw rod extends out of the first hinge axis; The screw rod is in threaded fit with the first hinge axis and in sliding fit with the second hinge axis.

[0010] The bottom end of the first hinge axis extends downward out of the left first connecting plate and the right first connecting plate, and a first sliding sleeve is connected downward at the bottom end of the first hinge axis.

[0011] The bottom end of the second hinge axis extends downward out of the left second connecting plate and the right second connecting plate, and a second sliding sleeve is connected downward at the bottom end of the second hinge axis. A sliding rod for holding is slidably passed between the first sliding sleeve and the second sliding sleeve.

[0012] The left first connecting plate, the left second connecting plate, the right first connecting plate and the right second connecting plate have the same structure, all of which are long strip-shaped and their cross-sections are all in the shape of a groove with one side open.

[0013] One end of the right first connecting plate is inserted into the groove of the left first connecting plate and the other end is inserted into the groove of the right second connecting plate. One end of the left second connecting plate is inserted into the groove of the left first connecting plate and the other end is inserted into the groove of the right second connecting plate.

[0014] The present invention also discloses a method for stripping armored cables using the above-mentioned armored cable stripping device, which is carried out according to the following steps:

[0015] First, use a tool to cut an annular opening on the metal sheath at the end of the armored cable.

[0016] Second, pull the deformation frame to make the first hinge axis away from the second hinge axis.

[0017] Third, place the armored cable from top to bottom on the deformation frame, make the armored cable pass through the notch in the middle of the left baffle and the right baffle, and make the annular opening located between the third hinge axis and the fourth hinge axis.

[0018] Fourth, put a sleeve on the armored cable on the left side of the left baffle and make the sleeve press against the left baffle, and put a sleeve on the armored cable on the right side of the right baffle and make the sleeve press against the right baffle.

[0019] Fifth, use a tool to tighten the tightening bolts on the sleeves at the left baffle and the sleeves at the right baffle, so that the two tightenings respectively press against the metal sheath of the armored cable.

[0020] Sixthly, one worker holds the sliding rod and the armored cable by hand, and another worker uses a tool to rotate the nut, causing the screw rod to rotate and extend out of the first hinge shaft. When the screw rod rotates, the first hinge shaft is pulled towards the second hinge shaft, and at the same time, the third hinge shaft is moved away from the fourth hinge shaft, so that the metal sheaths of the armored cables on both sides of the annular opening are separated from each other, and thus the metal sheath at the end of the armored cable is separated from the cable core and removed from the main structure of the armored cable.

[0021] The tool is a nut sleeve or an electric drill with a nut sleeve head.

[0022] The present invention has the following advantages:

[0023] The armored cable stripping device of the present invention has a simple structure and is convenient for manufacturing and use.

[0024] In the present invention, the armored cable is stripped by the deformation of the rhombic deformation frame under the action of mechanical external force. During the process of the third hinge shaft moving away from the fourth hinge shaft, the left baffle applies a leftward force to the metal sheath of the armored cable to the left of the annular opening, and the right baffle applies a rightward force to the metal sheath of the armored cable to the right of the annular opening, enabling the mechanical external force to perform a uniform and stable force stripping operation on the metal sheath of the armored cable, solving the problems of very difficult and inefficient manual stripping.

[0025] In the present invention, the component that clamps the armored cable is the tightening bolt, and the components that apply the stripping force are the left baffle and the right baffle. Since the stripping force and the clamping force are no longer the same component, the direction of the tightening force of the tightening bolt will not change, and the direction of the stripping force of the left baffle and the right baffle will not change either. Therefore, the armored cable will not be damaged due to the inclined and unstable application direction of the force.

[0026] The armored cable stripping method of the present invention uses a tool to replace manual labor for cable stripping. When stripping the metal sheath at the end section, selecting a suitable tool can easily generate sufficient pulling force. For example, an electric drill with a sufficient torque and a sleeve for rotating the nut is used; when the nut drives the screw rod to rotate, the screw rod rotates and extends out of the first hinge shaft under the cooperation of the bolt (the screw rod and the second hinge shaft are in a sliding fit and do not generate a force on the second hinge shaft in the length direction of the screw rod), thereby pushing the first hinge shaft towards the second hinge shaft, and at the same time moving the third hinge shaft away from the fourth hinge shaft, and further enabling the left baffle and the right baffle to pull the metal sheaths of the armored cable to the left and right respectively.

[0027] When using the present invention for stripping, the force applied to the metal sheath of the armored cable is uniform and stable, and will not be as large or small as when manually removing. The force and the application direction during the stripping process are uniform and stable, and will not damage the cable core due to sudden changes in force magnitude and changes in the application direction.

[0028] In short, by using the present invention, the force and direction of force in the stripping process are uniform and stable, the cable will not be damaged, the stripping efficiency of the armored cable can be greatly improved, the invention is easy to use, and has good promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 3. It is a schematic diagram of the top view of the structure of the rear armored cable stripping device in the third step;

[0030] Figure 2 is a schematic diagram of the top view of the armored cable stripping device during the sixth step;

[0031] Figure 3 yes Figure 2 A-A cross-sectional diagram of FIG.

[0032] Figure 4 yes Figure 1 Schematic diagram of the left view of the center left support and left baffle. DETAILED DESCRIPTION

[0033] like Figures 1 to 4 As shown, the armored cable stripping device of the present invention includes a diamond-shaped deformation frame formed by four connecting plates and a sleeve 1 (the sleeve 1 can be a nut) for being mounted on the armored cable. The ends of adjacent connecting plates are rotatably connected together by a hinge shaft. The side wall of the sleeve 1 is threadedly connected to a tightening bolt 2 for tightening the armored cable.

[0034] The four connecting plates include a left first connecting plate 3, a left second connecting plate 4, a right first connecting plate 5 and a right second connecting plate 6;

[0035] The top end of the hinge shaft of the left first connecting plate 3 and the left second connecting plate 4 is connected to a left support 7, which is upwardly connected to a left baffle 8. A notch 9 is provided in the middle of the left baffle 8 for passing the armored cable.

[0036] The top end of the hinge shaft of the right first connecting plate 5 and the right second connecting plate 6 is connected to a right support 10, and the right support 10 is upwardly connected to a right baffle 11. The middle of the right baffle 11 is provided with a notch 9 for passing the armored cable;

[0037] The hinge axis of the left first connecting plate 3 and the right first connecting plate 5 is the first hinge axis 12, the hinge axis of the left second connecting plate 4 and the right second connecting plate 6 is the second hinge axis 13, the hinge axis connecting the left first connecting plate 3 and the left second connecting plate 4 is the third hinge axis 14, and the hinge axis of the right first connecting plate 5 and the right second connecting plate is the fourth hinge axis 15; a screw 16 is passed through the first hinge axis 12 and the second hinge axis 13, one end of the screw 16 extends out of the second hinge axis 13 and is connected to a nut 17, and the other end of the screw 16 extends out of the first hinge axis 12; the screw 16 is threadedly engaged with the first hinge axis 12, and the screw 16 is slidingly engaged with the second hinge axis 13.

[0038] The bottom end of the first hinge shaft 12 extends downward from the left first connecting plate 3 and the right first connecting plate 5, and a first sliding sleeve 18 is connected downward at the bottom end of the first hinge shaft 12.

[0039] The bottom end of the second hinge shaft 13 extends downward from the left second connecting plate 4 and the right second connecting plate 6, and a second sliding sleeve 19 is connected downward at the bottom end of the second hinge shaft 13. A sliding rod 20 for hand-holding is slidably disposed between the first sliding sleeve 18 and the second sliding sleeve 19.

[0040] The left first connecting plate 3, the left second connecting plate 4, the right first connecting plate 5 and the right second connecting plate 6 have the same structure, and are all strip-shaped and their cross-sections are all in the shape of a groove with one side open (i.e., [shape);

[0041] One end of the right first connecting plate 5 is inserted into the groove of the left first connecting plate 3 and the other end is inserted into the groove of the right second connecting plate. One end of the left second connecting plate 4 is inserted into the groove of the left first connecting plate 3 and the other end is inserted into the groove of the right second connecting plate.

[0042] A sleeve is fixedly connected to each end of the connecting plates. The sleeve is sleeved on the hinge shaft and is in rotational cooperation with the hinge shaft; the sleeves of adjacent connecting plates are arranged at intervals up and down and are in rotational cooperation with the same hinge shaft. The structure of the sleeve in rotational cooperation with the hinge shaft is a conventional technology, and the sleeve is not shown in the figure.

[0043] The specific structures of the four connecting plates are relatively simple, having relatively high structural strength and being convenient for connecting into a diamond-shaped deformable frame.

[0044] The present invention also provides a method for stripping an armored cable using the above-mentioned armored cable stripping device, which is carried out according to the following steps:

[0045] First, a circular opening is cut in the metal sheath at the end of the armored cable using a tool;

[0046] Second, the deformable frame is pulled (as Figure 1 shown) to move the first hinge shaft 12 away from the second hinge shaft 13;

[0047] Third, the armored cable is placed on the deformable frame from top to bottom, so that the armored cable passes through the notch 9 in the middle of the left baffle 8 and the right baffle 11, and the circular opening is located between the third hinge shaft 14 and the fourth hinge shaft 15;

[0048] Fourth, a sleeve 1 is sleeved on the armored cable on the left side of the left baffle 8 and the sleeve 1 is made to press against the left baffle 8, and a sleeve 1 is sleeved on the armored cable on the right side of the right baffle 11 and the sleeve 1 is made to press against the right baffle 11;

[0049] Fifth, a tool is used to tighten the tightening bolts 2 on the sleeve 1 at the left baffle 8 and the sleeve 1 at the right baffle 11, so that the two tightenings respectively press against the metal sheath 21 of the armored cable;

[0050] Sixthly, one worker holds the sliding rod 20 and the armored cable with his hand (it can be the same hand), and another worker uses a tool to rotate the nut 17 to make the screw rod 16 rotate and extend out of the first hinge shaft 12. When the screw rod 16 rotates, the first hinge shaft 12 is pulled towards the second hinge shaft 13, and at the same time, the third hinge shaft 14 is moved away from the fourth hinge shaft 15, so that the metal sheaths 21 of the armored cables on both sides of the annular opening are separated from each other, thereby separating the metal sheath 21 at the end of the armored cable from the cable inner core 22 and pulling the metal sheath 21 at the end of the armored cable off the main structure of the armored cable.

[0051] In the above process, the end of the armored cable can be located at the third hinge shaft 14 or the fourth hinge shaft 15.

[0052] The tool is a nut 17 sleeve 1 or an electric drill with a nut 17 sleeve 1 head.

[0053] In the past, when using a tool to clamp the metal sheath 21 of the armored cable for peeling, since the tool is both a component for clamping the armored cable (the clamping force is perpendicular to the axis of the armored cable) and a component for applying the peeling force (the peeling force is parallel to the axis of the armored cable), the direction of the applied force is inclined and unstable, so it is very easy to damage the armored cable.

[0054] In the present invention, the component for clamping the armored cable is the tightening bolt 2, and the components for applying the peeling force are the left baffle 8 and the right baffle 11. Since the peeling force and the clamping force are no longer the same component, the direction of the tightening force of the tightening bolt 2 will not change, and the direction of the peeling force of the left baffle 8 and the right baffle 11 will not change either. Therefore, the armored cable will not be damaged due to the inclined and unstable direction of the applied force.

[0055] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be modified or equivalently replaced, and any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims

1. A method for stripping armored cables using an armored cable stripping device, characterized in that: The armored cable stripping device includes a deformed frame in the shape of a rhombus formed by four connecting plates and a sleeve for sleeving on the armored cable. The ends of adjacent connecting plates are all rotatably connected together by a hinge shaft. A tightening bolt for pressing tightly against the armored cable is threadedly connected to the side wall of the sleeve. The four connecting plates include a left first connecting plate, a left second connecting plate, a right first connecting plate, and a right second connecting plate. The top of the hinge shaft of the left first connecting plate and the left second connecting plate is connected with a left support. The left support is connected upward with a left baffle. A notch for passing through the armored cable is provided in the middle of the left baffle. The top of the hinge shaft of the right first connecting plate and the right second connecting plate is connected with a right support. The right support is connected upward with a right baffle. A notch for passing through the armored cable is provided in the middle of the right baffle. The hinge shaft of the left first connecting plate and the right first connecting plate is the first hinge shaft. The hinge shaft of the left second connecting plate and the right second connecting plate is the second hinge shaft. The hinge shaft connecting the left first connecting plate and the left second connecting plate is the third hinge shaft. The hinge shaft connecting the right first connecting plate and the right second connecting plate is the fourth hinge shaft. A screw rod is inserted between the first hinge shaft and the second hinge shaft. One end of the screw rod extends out of the second hinge shaft and is connected with a nut. The other end of the screw rod extends out of the first hinge shaft. The screw rod is in threaded cooperation with the first hinge shaft and in sliding cooperation with the second hinge shaft. The bottom end of the first hinge shaft extends downward out of the left first connecting plate and the right first connecting plate. The bottom end of the first hinge shaft is connected downward with a first sliding sleeve. The bottom end of the second hinge shaft extends downward out of the left second connecting plate and the right second connecting plate. The bottom end of the second hinge shaft is connected downward with a second sliding sleeve. A sliding rod for holding by hand is slidably inserted between the first sliding sleeve and the second sliding sleeve. The left first connecting plate, the left second connecting plate, the right first connecting plate, and the right second connecting plate have the same structure, are all strip-shaped and their cross-sections are all in the shape of a groove with one side open. One end of the right first connecting plate is inserted into the groove of the left first connecting plate and the other end is inserted into the groove of the right second connecting plate. One end of the left second connecting plate is inserted into the groove of the left first connecting plate and the other end is inserted into the groove of the right second connecting plate. Proceed as follows: First, use a tool to cut a circular opening on the metal sheath at the end section of the armored cable. Second, pull the deformed frame to make the first hinge shaft away from the second hinge shaft. Third, place the armored cable from top to bottom on the deformed frame, make the armored cable pass through the notches in the middle of the left baffle and the right baffle, and make the circular opening located between the third hinge shaft and the fourth hinge shaft. Fourth, put a sleeve on the armored cable on the left side of the left baffle and make the sleeve press against the left baffle. Put a sleeve on the armored cable on the right side of the right baffle and make the sleeve press against the right baffle. Fifth, use a tool to tighten the tightening bolts on the sleeves at the left baffle and the right baffle, so that the two sleeves respectively press tightly against the metal sheath of the armored cable. Sixth, one staff member holds the sliding rod and the armored cable by hand, and another staff member uses a tool to rotate the nut, so that the screw rod rotates and extends out of the first hinge shaft. When the screw rod rotates, the first hinge shaft is pulled towards the second hinge shaft, and at the same time, the third hinge shaft is away from the fourth hinge shaft, so that the metal sheaths of the armored cable on both sides of the circular opening are separated from each other, so as to separate the metal sheath at the end section of the armored cable from the cable inner core and pull it off from the main structure of the armored cable.

2. The armoured cable stripping method according to claim 1, wherein: The tool is a nut sleeve or an electric drill with a nut sleeve head.

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