A cable elbow sleeve dismounting device

Abstract

The utility model relates to power maintenance tool technical field especially is involved in a cable elbow type cover dismounting device. The device includes drawing mechanism and inflation separation mechanism, drawing mechanism is used for clamping cable elbow shape cover and applies axial tension to it to realize the separation of cable elbow shape cover and cable. The cable elbow type cover dismounting device provided by the utility model seals the end cover and the cable elbow shape cover when using, so that the sealing end cover, cable elbow shape cover and cable jointly enclose the inflation space, then the air inlet pipe inputs the compressed air into the inflation space through the gas guide channel, makes the compressed air diffuse along the interface between the cable elbow shape cover and the cable, and then forms the separation gap between the cable elbow shape cover and the cable. Thus, the problem that the cable elbow shape cover inner wall rubber layer or stress cone structure is easy to scratch or tear due to the stress mainly concentrated in the contact surface of the cable elbow shape cover and the cable during the drawing process is solved.

Description

Technical Field

[0001] This utility model relates to the field of power maintenance tools, and in particular to a cable elbow sleeve disassembly device. Background Technology

[0002] Cable elbow sleeves are key insulating accessories used for cable connections in medium and low voltage power distribution systems. Their function is to achieve a reliable connection between cables and equipment (such as circuit breakers, disconnectors, and bushings), while providing insulation and sealing protection to prevent electrical faults caused by moisture and dust intrusion. They are an important component for ensuring the safe operation of power distribution networks.

[0003] In the current process of removing cable elbow sleeves, the elbow sleeve is usually separated from the cable by direct pulling. However, since the stress is mainly concentrated on the contact surface between the cable elbow sleeve and the cable during the pulling process, the rubber layer or stress cone structure on the inner wall of the cable elbow sleeve is prone to scratches or tears, which affects the reusability of the cable elbow sleeve after removal. Utility Model Content

[0004] This utility model provides a cable elbow sleeve disassembly device to solve the problem that during the pulling process, the stress is mainly concentrated on the contact surface between the cable elbow sleeve and the cable, which makes the rubber layer or stress cone structure on the inner wall of the cable elbow sleeve prone to scratches or tears, thus affecting the reusability of the cable elbow sleeve after disassembly.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A cable elbow sleeve disassembly device:

[0007] The device includes a pulling mechanism and an inflation separation mechanism. The pulling mechanism is used to clamp the cable elbow sleeve and apply axial tension to it to separate the cable elbow sleeve from the cable. The inflation separation mechanism includes a sealing end cap and an air inlet pipe. The sealing end cap abuts and seals against the cable elbow sleeve so that the sealing end cap, the cable elbow sleeve, and the cable together form an inflation space. An air guide channel is provided on the sealing end cap, and the outlet of the air guide channel is connected to the inflation space. The air inlet pipe is connected to the inlet of the air guide channel and is used to input compressed air into the inflation space, so that the compressed air diffuses along the interface between the cable elbow sleeve and the cable, thereby forming a separation gap between the cable elbow sleeve and the cable.

[0008] Furthermore, it also includes a vibration mechanism; the vibration mechanism is detachably mounted on the cable elbow sleeve and is used to apply reciprocating vibration stress to the cable elbow sleeve to loosen the connection between the cable elbow sleeve and the cable, thereby promoting the diffusion of compressed air along the interface between the cable elbow sleeve and the cable.

[0009] Furthermore, the vibration mechanism includes a first clamping bent plate, a second clamping bent plate, and a vibration motor; the first clamping bent plate and the second clamping bent plate are detachably connected by bolts and nuts to clamp and fix the outer periphery of the cable elbow sleeve; the vibration motor is mounted on the first clamping bent plate and is used to generate high-frequency vibration and transmit it to the cable elbow sleeve.

[0010] Furthermore, the vibration mechanism also includes two anti-slip pads; the two anti-slip pads are respectively connected to the inner sides of the first clamping bent plate and the second clamping bent plate, for increasing the friction between the first clamping bent plate and the second clamping bent plate and the cable elbow sleeve.

[0011] Furthermore, the pulling mechanism includes a support bracket, a pulling ring, and a drive screw;

[0012] One end of the pull-out ring is connected to the bearing bracket, and the other end abuts against the cable elbow sleeve to achieve axial clamping of the cable elbow sleeve; the drive screw is inserted into the bearing bracket and threadedly connected to the bearing bracket to apply axial tension to the cable elbow sleeve.

[0013] Furthermore, the pulling mechanism also includes a clamping screw and a clamping nut; the sealing end cap is connected to the bearing bracket; one end of the clamping screw is connected to the pulling ring, and the other end is slidably inserted into the bearing bracket; the clamping nut is threaded onto the clamping screw and is used to drive the sealing end cap to move toward the cable elbow sleeve so that the sealing end cap abuts and seals with the cable elbow sleeve.

[0014] Furthermore, the pulling mechanism also includes a pressure-reducing support; the pressure-reducing support is rotatably mounted on the drive screw to increase the contact area between the drive screw and the cable.

[0015] Furthermore, the pulling mechanism includes two pulling rings, two clamping screws, and two clamping nuts; the two pulling rings are arranged symmetrically around the drive screws to apply axial tension evenly to the cable elbow sleeve.

[0016] Furthermore, the pulling mechanism also includes two deflection sleeves; both deflection sleeves are rotatably mounted on the bearing bracket; and the two clamping screws are slidably inserted into the two deflection sleeves respectively.

[0017] Furthermore, the pulling mechanism also includes a handle structure; the handle structure includes a drive block, two positioning blocks, and a drive handle; the drive block is connected to the end of the drive screw away from the pressure relief support; the two positioning blocks are respectively connected to the ends of the two clamping screws away from the pulling ring; the drive handle is fitted onto the drive screw and slidably connected to the drive screw; a drive groove is provided at the top of the drive handle, which slidably engages with the drive block to drive the drive screw to rotate; two positioning holes are provided at the bottom of the drive handle, which slidably engage with the positioning block to restrict the rotation of the two clamping screws.

[0018] The beneficial effects of the cable elbow sleeve disassembly device in this utility model are analyzed as follows:

[0019] The device includes a pulling mechanism and an inflation separation mechanism. The pulling mechanism is used to clamp the cable elbow sleeve and apply axial tension to it to separate the cable elbow sleeve from the cable. The inflation separation mechanism includes a sealing end cap and an air inlet pipe. The sealing end cap abuts and seals against the cable elbow sleeve so that the sealing end cap, the cable elbow sleeve, and the cable together form an inflation space. An air guide channel is provided on the sealing end cap, and the outlet of the air guide channel is connected to the inflation space. The air inlet pipe is connected to the inlet of the air guide channel and is used to input compressed air into the inflation space, so that the compressed air diffuses along the interface between the cable elbow sleeve and the cable, thereby forming a separation gap between the cable elbow sleeve and the cable.

[0020] The cable elbow sleeve disassembly device provided by this utility model, when in use, seals the cable elbow sleeve by abutting the sealing end cap, so that the sealing end cap, the cable elbow sleeve and the cable together form an inflation space. Then, the air inlet pipe introduces compressed air into the inflation space through the air guide channel, so that the compressed air diffuses along the interface between the cable elbow sleeve and the cable, thereby forming a separation gap between the cable elbow sleeve and the cable. This solves the problem that the rubber layer or stress cone structure on the inner wall of the cable elbow sleeve is prone to scratches or tears during the pulling process. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the cable elbow sleeve disassembly device provided in this embodiment of the utility model;

[0023] Figure 2A schematic diagram of the combined structure of the pulling mechanism and the air-filling separation mechanism provided in this embodiment of the utility model;

[0024] Figure 3 A front view of the combination of the pulling mechanism and the inflation separation mechanism provided in this embodiment of the utility model;

[0025] Figure 4 An exploded three-dimensional structural diagram of the vibration mechanism provided in this embodiment of the invention.

[0026] icon:

[0027] 100-Pull-out mechanism; 110-Bearing bracket; 120-Pull-out support ring; 130-Drive screw; 140-Clamping screw; 150-Clamping nut; 160-Pressure relief support; 170-Deflection sleeve; 180-Grip structure; 181-Drive block; 182-Positioning block; 183-Drive grip; 200-Inflation separation mechanism; 210-Sealing end cap; 220-Inlet pipe; 300-Vibration mechanism; 310-First clamping bent plate; 320-Second clamping bent plate; 330-Vibration motor; 340-Anti-slip pad. Detailed Implementation

[0028] Because the stress during the pulling process is mainly concentrated on the contact surface between the cable elbow sleeve and the cable, the rubber layer or stress cone structure on the inner wall of the cable elbow sleeve is prone to scratches or tears, thus affecting the reusability of the cable elbow sleeve after removal.

[0029] In view of this, this solution provides a cable elbow sleeve removal device, including a pull-out mechanism 100 and an inflation separation mechanism 200.

[0030] The following combination Figures 1-4 The structure and shape of the cable elbow sleeve disassembly device provided in this embodiment will be described in detail:

[0031] The pulling mechanism 100 is used to clamp the cable elbow sleeve and apply axial tension to it to separate the cable elbow sleeve from the cable; the inflation separation mechanism 200 includes a sealing end cap 210 and an air inlet pipe 220; the sealing end cap 210 abuts and seals with the cable elbow sleeve so that the sealing end cap 210, the cable elbow sleeve and the cable together form an inflation space; the sealing end cap 210 is provided with an air guide channel, and the outlet of the air guide channel is connected to the inflation space; the air inlet pipe 220 is connected to the inlet of the air guide channel and is used to input compressed air into the inflation space, so that the compressed air diffuses along the interface between the cable elbow sleeve and the cable, thereby forming a separation gap between the cable elbow sleeve and the cable.

[0032] In this embodiment, the sealing end cap 210 abuts against the cable elbow sleeve to form an air-filled space, so that the sealing end cap 210, the cable elbow sleeve, and the cable together form an air-filled space. Then, compressed air is introduced into the air-filled space through the air inlet pipe 220 and the air guide channel, so that the compressed air diffuses along the interface between the cable elbow sleeve and the cable, thereby forming a separation gap between the cable elbow sleeve and the cable to reduce the friction between the contact surfaces of the cable elbow sleeve and the cable, thereby avoiding scratches or tears in the rubber layer or stress cone structure of the inner wall of the cable elbow sleeve during the pulling process.

[0033] In addition, the pulling mechanism 100 clamps the cable elbow sleeve and applies axial tension to it, thereby driving the cable elbow sleeve to move along the cable; at the same time, it inputs compressed air into the inflation space, so that the compressed air drives the cable elbow sleeve to move along the cable, thereby assisting the pulling mechanism 100 in separating the cable elbow sleeve from the cable.

[0034] To facilitate the separation of the adhesive interface between the cable elbow sleeve and the cable:

[0035] like Figure 1 As shown, it also includes a vibration mechanism 300; the vibration mechanism 300 is detachably mounted on the cable elbow sleeve and is used to apply reciprocating vibration stress to the cable elbow sleeve to loosen the connection between the cable elbow sleeve and the cable, thereby promoting the diffusion of compressed air along the interface between the cable elbow sleeve and the cable.

[0036] In this embodiment, the vibration mechanism 300 applies reciprocating vibration stress to the cable elbow sleeve to loosen and separate the adhesive interface between the cable elbow sleeve and the cable, thereby promoting the diffusion of compressed air along the interface between the cable elbow sleeve and the cable.

[0037] In addition, the reciprocating vibration stress is applied to the cable elbow sleeve by the vibration mechanism 300 so that the cable elbow sleeve and the cable are in a relative sliding state, thereby reducing the axial tension required to separate the cable elbow sleeve from the cable.

[0038] To apply reciprocating vibration stress to the cable elbow sleeve:

[0039] like Figure 4 As shown, the vibration mechanism 300 includes a first clamping bent plate 310, a second clamping bent plate 320, and a vibration motor 330; the first clamping bent plate 310 and the second clamping bent plate 320 are detachably connected by bolts and nuts to clamp and fix the outer periphery of the cable elbow sleeve; the vibration motor 330 is installed on the first clamping bent plate 310 to generate high-frequency vibration and transmit it to the cable elbow sleeve.

[0040] In this embodiment, the cable elbow sleeve is first inserted between the first clamping bend plate 310 and the second clamping bend plate 320. Then, the first clamping bend plate 310 and the second clamping bend plate 320 are moved toward each other by bolts and nuts. The moving first clamping bend plate 310 and the second clamping bend plate 320 clamp and fix the outer periphery of the cable elbow sleeve. Then, the vibration motor 330 generates high-frequency vibration and transmits it to the cable elbow sleeve, thereby applying reciprocating vibration stress to the cable elbow sleeve.

[0041] To prevent relative movement between the first clamping bend 310 and the second clamping bend 320 and the cable elbow sleeve:

[0042] like Figure 4 As shown, the vibration mechanism 300 also includes two anti-slip pads 340; the two anti-slip pads 340 are respectively connected to the inner sides of the first clamping bent plate 310 and the second clamping bent plate 320, and are used to increase the friction between the first clamping bent plate 310 and the second clamping bent plate 320 and the cable elbow sleeve.

[0043] In this embodiment, anti-slip pads 340 are provided on the inner sides of both the first clamping bent plate 310 and the second clamping bent plate 320 to increase the friction between the first clamping bent plate 310 and the second clamping bent plate 320 and the cable elbow sleeve, thereby preventing relative movement between the first clamping bent plate 310 and the second clamping bent plate 320 and the cable elbow sleeve.

[0044] To clamp the cable elbow sleeve and apply axial tension to it:

[0045] like Figures 2-3 As shown, the pulling mechanism 100 includes a support bracket 110, a pulling ring 120, and a drive screw 130; one end of the pulling ring 120 is connected to the support bracket 110, and the other end abuts against the cable elbow sleeve to achieve axial clamping of the cable elbow sleeve; the drive screw 130 is inserted into the support bracket 110 and threadedly connected to the support bracket 110 to apply axial tension to the cable elbow sleeve.

[0046] In this embodiment, the pull-out retainer 120 is first attached to one end of the cable elbow sleeve inserted into the cable. Then, the drive screw 130 is rotated. The rotating drive screw 130 moves towards the cable under the engagement of the thread. After the drive screw 130 contacts the cable, it completes the clamping of the cable elbow sleeve. Then, the drive screw 130 is rotated again to apply axial tension to the cable elbow sleeve through the bearing bracket 110 and the pull-out retainer 120, thereby causing the cable elbow sleeve to separate from the cable.

[0047] To ensure a tight seal between the sealing end cap 210 and the cable elbow sleeve:

[0048] like Figures 2-3As shown, the pulling mechanism 100 also includes a clamping screw 140 and a clamping nut 150; a sealing end cap 210 is connected to a bearing bracket 110; one end of the clamping screw 140 is connected to the pulling ring 120, and the other end is slidably inserted into the bearing bracket 110; the clamping nut 150 is threaded onto the clamping screw 140 and is used to drive the sealing end cap 210 to move toward the cable elbow sleeve so that the sealing end cap 210 abuts and seals with the cable elbow sleeve.

[0049] In this embodiment, after the pull-out ring 120 is attached to one end of the cable elbow sleeve, the clamping nut 150 is rotated around the axis of the clamping screw 140. Under the engagement of the threads, the clamping nut 150 drives the bearing bracket 110 to move along the clamping screw 140. The bearing bracket 110 drives the sealing end cap 210 to abut and seal against the other end of the cable elbow sleeve.

[0050] To reduce damage to the cable during the elbow sleeve pull-out process:

[0051] like Figures 2-3 As shown, the pulling mechanism 100 also includes a pressure reducing support 160; the pressure reducing support 160 is rotatably mounted on the drive screw 130 to increase the contact area between the drive screw 130 and the cable.

[0052] In this embodiment, a pressure-reducing support 160 is mounted on the end of the drive screw 130 facing the cable to increase the contact area between the drive screw 130 and the cable, thereby reducing the pressure exerted by the drive screw 130 on the cable per unit area and thus reducing the damage to the cable during the cable elbow sleeve pulling process.

[0053] To improve the uniformity of the axial tensile force applied to the cable elbow sleeve:

[0054] like Figures 2-3 As shown, the pulling mechanism 100 includes two pulling rings 120, two clamping screws 140 and two clamping nuts 150; the two pulling rings 120 are arranged symmetrically with the drive screw 130 as the center, and are used to apply axial tension evenly to the cable elbow sleeve.

[0055] In this embodiment, by symmetrically arranging the two pull-out rings 120 with the drive screw 130 as the center, the two pull-out rings 120 simultaneously apply axial tension to the cable elbow sleeve, thereby preventing the cable elbow sleeve from shifting during the pull-out process and improving the balance of the axial tension applied to the cable elbow sleeve.

[0056] To facilitate the fit between the two pull-out lugs 120 and the cable elbow sleeve inserted into one end of the cable:

[0057] like Figures 2-3As shown, the pulling mechanism 100 also includes two deflection sleeves 170; both deflection sleeves 170 are rotatably mounted on the bearing bracket 110; and two clamping screws 140 are slidably inserted into the two deflection sleeves 170 respectively.

[0058] In this embodiment, by rotatably mounting both deflection sleeves 170 on the bearing bracket 110, and simultaneously setting the two clamping screws 140 to be slidably inserted into the two deflection sleeves 170 respectively, the two clamping screws 140 can drive the two pull-out rings 120 to rotate, thereby facilitating the two pull-out rings 120 to fit with the end of the cable elbow sleeve inserted into the cable.

[0059] To facilitate the rotation of the drive screw 130 around its own axis and to prevent the pull ring 120 from rotating around the axis of the clamping screw 140:

[0060] like Figures 2-3 As shown, the pulling mechanism 100 also includes a grip structure 180; the grip structure 180 includes a drive block 181, two positioning blocks 182, and a drive grip 183; the drive block 181 is connected to the end of the drive screw 130 away from the pressure relief support 160; the two positioning blocks 182 are respectively connected to the ends of the two clamping screws 140 away from the pulling ring 120; the drive grip 183 is fitted onto the drive screw 130 and is slidably connected to the drive screw 130; a drive groove is provided on the top of the drive grip 183, which is slidably engaged with the drive block 181 to drive the drive screw 130 to rotate; two positioning holes are provided on the bottom of the drive grip 183, which are slidably engaged with the positioning blocks 182 to limit the rotation of the two clamping screws 140.

[0061] In this embodiment, when it is necessary to drive the drive screw 130 to rotate around its own axis, the drive handle 183 is first driven to move along the drive screw 130 toward the drive block 181. After the drive groove on the drive handle 183 is engaged with the drive block 181, the drive handle 183 drives the drive screw 130 to rotate around its own axis.

[0062] When it is necessary to move the sealing end cap 210 toward the cable elbow sleeve, the drive handle 183 is first moved along the drive screw 130 toward the positioning block 182. After the two positioning holes on the drive handle 183 are respectively engaged with the two positioning blocks 182, the drive screw 130 is restricted from rotating around its own axis, thereby preventing the pull-out ring 120 from rotating around the axis of the clamping screw 140.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cable elbow sleeve disassembly device, characterized in that: Includes a pulling mechanism (100) and an inflation separation mechanism (200); The pulling mechanism (100) is used to clamp the cable elbow sleeve and apply axial tension to it to separate the cable elbow sleeve from the cable. The inflation separation mechanism (200) includes a sealing end cap (210) and an air inlet pipe (220); The sealing end cap (210) abuts and seals with the cable elbow sleeve, so that the sealing end cap (210), the cable elbow sleeve and the cable together form an air-filled space; An air guide channel is provided on the sealing end cap (210), and the outlet of the air guide channel is connected to the inflation space; The air inlet pipe (220) is connected to the inlet of the air guide channel and is used to input compressed air into the inflation space, so that the compressed air diffuses along the interface between the cable elbow sleeve and the cable, thereby forming a separation gap between the cable elbow sleeve and the cable.

2. The cable elbow sleeve disassembly device according to claim 1, characterized in that: It also includes a vibration mechanism (300); The vibration mechanism (300) is detachably mounted on the cable elbow sleeve and is used to apply reciprocating vibration stress to the cable elbow sleeve to loosen the connection between the cable elbow sleeve and the cable, thereby promoting the diffusion of compressed air along the interface between the cable elbow sleeve and the cable.

3. The cable elbow sleeve disassembly device according to claim 2, characterized in that: The vibration mechanism (300) includes a first clamping bent plate (310), a second clamping bent plate (320), and a vibration motor (330). The first clamping bent plate (310) and the second clamping bent plate (320) are detachably connected by bolts and nuts to clamp and fix the outer periphery of the cable elbow sleeve; The vibration motor (330) is mounted on the first clamping bend plate (310) to generate high-frequency vibration and transmit it to the cable elbow sleeve.

4. The cable elbow sleeve disassembly device according to claim 3, characterized in that: The vibration mechanism (300) also includes two anti-slip pads (340); The two anti-slip pads (340) are respectively connected to the inner sides of the first clamping bent plate (310) and the second clamping bent plate (320) to increase the friction between the first clamping bent plate (310) and the second clamping bent plate (320) and the cable elbow sleeve.

5. The cable elbow sleeve disassembly device according to claim 4, characterized in that: The pulling mechanism (100) includes a support bracket (110), a pulling ring (120), and a drive screw (130). One end of the pull-out ring (120) is connected to the bearing bracket (110), and the other end abuts against the cable elbow sleeve to achieve axial clamping of the cable elbow sleeve; The drive screw (130) is inserted into the support bracket (110) and threadedly connected to the support bracket (110) to apply axial tension to the cable elbow sleeve.

6. The cable elbow sleeve disassembly device according to claim 5, characterized in that: The pulling mechanism (100) further includes a clamping screw (140) and a clamping nut (150). The sealing end cap (210) is connected to the bearing bracket (110). One end of the clamping screw (140) is connected to the pull-out ring (120), and the other end is slidably inserted into the bearing bracket (110). The clamping nut (150) is threaded onto the clamping screw (140) to drive the sealing end cap (210) to move toward the cable elbow sleeve so that the sealing end cap (210) abuts and seals with the cable elbow sleeve.

7. The cable elbow sleeve disassembly device according to claim 6, characterized in that: The pulling mechanism (100) also includes a pressure relief support (160). The pressure relief support (160) is rotatably mounted on the drive screw (130) to increase the contact area between the drive screw (130) and the cable.

8. The cable elbow sleeve disassembly device according to claim 7, characterized in that: The pulling mechanism (100) includes two pulling rings (120), two clamping screws (140), and two clamping nuts (150). The two pull-out rings (120) are arranged symmetrically about the drive screw (130) to apply axial tension evenly to the cable elbow sleeve.

9. The cable elbow sleeve disassembly device according to claim 8, characterized in that: The pulling mechanism (100) also includes two deflection sleeves (170). Both of the deflection sleeves (170) are rotatably mounted on the bearing bracket (110). The two clamping screws (140) are respectively slidably inserted into the two deflection sleeves (170).

10. The cable elbow sleeve disassembly device according to claim 9, characterized in that: The pulling mechanism (100) also includes a grip structure (180). The grip structure (180) includes a drive block (181), two positioning blocks (182) and a drive grip (183). The drive block (181) is connected to the end of the drive screw (130) away from the pressure relief support (160); The two positioning blocks (182) are respectively connected to the ends of the two clamping screws (140) away from the pull-out ring (120); The drive grip (183) is fitted onto the drive screw (130) and is slidably connected to the drive screw (130); The top of the drive grip (183) is provided with a drive groove, which is slidably engaged with the drive block (181) to drive the drive screw (130) to rotate. The bottom of the drive grip (183) has two positioning holes, which are slidably engaged with the positioning block (182) to limit the rotation of the two clamping screws (140).

Images