Cable aluminum sheath unfolding device

Abstract

The utility model provides a cable aluminum sheath unfolding device. The cable aluminum sheath unfolding device comprises a positioning rod, an unfolding structure used for being connected with a cable aluminum sheath and a handle used for providing unfolding force. The unfolding structure is rotatably connected with the positioning rod and is positioned at the end part of the positioning rod; the handle is connected with the positioning rod; during working, the unfolding structure is connected with a cable aluminum sheath and serves as an acting force point, and the outer end face of the positioning rod is tightly attached to the cable aluminum sheath and serves as a supporting face for handle operation. The cable aluminum sheath unfolding device not only can improve the convenience of stripping the cable aluminum sheath so as to improve the stripping efficiency of the aluminum sheath, but also can solve the problem that an insulating layer of a cable body is easy to extrude in the stripping process at the present stage, thereby improving the manufacturing quality of a cable joint and improving the power supply reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power construction, and more specifically to a cable aluminum sheath unfolder. Background Art

[0002] Power cables are mainly composed of four parts: cable body (conductor, insulation layer), sheath and outer sheath. The sheath refers to the armor layer of the cable, which plays a mechanical protection role. The armor layer of XLPE cables with voltage levels of 110kV and above uses corrugated aluminum (copper, lead, stainless steel) sheath as armor and inner waterproof sheath. Because the water absorption rates of PE and PVC sheaths are 0.01% and 0.15%-1% respectively, and metal sheaths are almost impermeable, ultra-high voltage cables all use impermeable metal inner sheaths. In addition, there are waterproof tapes and other water-isolating processes in the inner sheath of ultra-high voltage cables, which can prevent the moisture that has entered from spreading easily.

[0003] The scale of power cable production in my country has expanded, production capacity has increased, and cables have been widely used in my country's high and low voltage power grids. With the maturity of cable manufacturing technology, in order to achieve better waterproof effect, the armor layer and waterproof tape of the cable are made tighter and smaller than the cable body, which increases the difficulty of stripping the cable aluminum sheath when installing the cable joint.

[0004] During the cable laying process, at present, when stripping the aluminum sheath of the cable joint, the aluminum sheath of the cable terminal is unfolded and expanded into a trumpet shape. Generally, needle-nosed pliers are used to expand the aluminum sheath of the cable joint. The aluminum sheath is expanded into a trumpet shape. It is inconvenient to use needle-nosed pliers to expand the aluminum sheath, which leads to a long time and low efficiency in stripping. Moreover, the needle-nosed pliers are easy to squeeze the insulation layer of the cable body when stretching the aluminum sheath, which makes it easy for the insulation layer of the cable body to be damaged. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art and to provide a cable aluminum sheath unfolder, which can not only improve the convenience of stripping the cable aluminum sheath to improve the efficiency of stripping the aluminum sheath, but also solve the problem that the insulation layer of the cable body is easily squeezed during the current stripping process, thereby improving the manufacturing quality of the cable joint and improving the power supply reliability.

[0006] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a cable aluminum sheath unfolder, characterized in that: it includes a positioning rod, an unfolding structure used to connect with the cable aluminum sheath and a handle for providing unfolding force; the unfolding structure is rotatably connected to the positioning rod and is located at the end of the positioning rod; the handle is connected to the positioning rod; when working, the unfolding structure is connected to the cable aluminum sheath and serves as a force point, and the outer end surface of the positioning rod is close to the cable aluminum sheath as a support surface for the handle operation.

[0007] In the above scheme, the utility model adopts the lever principle, and the expansion structure of the cable aluminum sheath expander is connected to the cable aluminum sheath and used as a force point. The outer end surface of the positioning rod is close to the cable aluminum sheath and used as a fulcrum. The construction personnel operate the handle to provide the load point required by the lever. The construction personnel can easily expand the cable aluminum sheath by applying force to the handle and using the lever principle, thereby expanding the inner diameter of the cable aluminum sheath, separating the cable aluminum sheath from the cable body, and meeting the requirements for stripping the cable aluminum sheath. The cable aluminum sheath expander can not only improve the convenience of stripping the cable aluminum sheath to improve the efficiency of stripping the aluminum sheath, but also the expander does not contact the cable body, which can solve the problem of easily squeezing the insulation layer of the cable body during the current stripping process, thereby improving the manufacturing quality of the cable joint and improving the reliability of power supply.

[0008] The deployment structure is a barb.

[0009] The connection between the unfolded structure and the cable aluminum sheath means that the barb hooks the gap opened by the cable aluminum sheath.

[0010] The unfolding structure is rotatably connected to the positioning rod and is located at the end of the positioning rod, which means that: the cable aluminum sheath unfolder also includes a pin; the end of the positioning rod is provided with a mounting groove and a mounting hole, the pin is rotatably installed on the mounting hole, the barb is connected to the pin to achieve rotatable connection with the positioning rod, and the connection between the barb and the pin is in the mounting groove.

[0011] The cable aluminum sheath has crests and troughs; when the outer end surface of the positioning rod is close to the cable aluminum sheath, the positioning rod at least fits two crests. This design can increase the contact area of ​​the fulcrum, thereby improving the effectiveness of stripping the cable aluminum sheath.

[0012] The connection between the handle and the positioning rod is close to the end of the positioning rod connected to the unfolding structure. This design can improve the effectiveness of stripping the aluminum sheath of the cable.

[0013] The connection point between the handle and the positioning rod is located at one third of the connection end of the positioning rod and the unfolding structure.

[0014] The cable aluminum sheath unfolder also includes a support rod; one end of the support rod is connected to the handle, and the other end of the support rod is connected to the positioning rod.

[0015] The support rod, the handle and the positioning rod form an isosceles triangle. The support rod of the utility model can improve the structural strength of the cable aluminum sheath expander.

[0016] The positioning rod, the unfolding structure, the handle and the support rod are all made of carbon steel, stainless steel or alloy steel. The cable aluminum sheath unfolder of the utility model needs to be made of high-strength, wear-resistant and corrosion-resistant materials to ensure durability in various environments.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0018] 1. The utility model cable aluminum sheath unfolder can not only improve the convenience of cable aluminum sheath stripping to improve the efficiency of aluminum sheath stripping, but also solve the problem of easy squeezing of the insulation layer of the cable body during the current stripping process, thereby improving the manufacturing quality of the cable joint and improving the power supply reliability.

[0019] 2. The cable aluminum sheath expander of the utility model has simple structure, light weight, low cost, and convenient use, and meets the construction requirements on site.

[0020] 3. The cable aluminum sheath expander of the utility model is made of high-strength, wear-resistant and corrosion-resistant materials such as carbon steel, stainless steel or alloy steel, which can ensure durability in various environments.

[0021] 4. The cable aluminum sheath expander of the utility model may be subjected to large impact force and rotational torque during use, so its structural design must ensure that it will not break or slip during use to ensure user safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the utility model cable aluminum sheath expander;

[0023] Figure 2 It is a schematic diagram of the connection between the barb and the positioning rod in the cable aluminum sheath expander of the utility model;

[0024] Figure 3 It is a schematic diagram of the barb in the cable aluminum sheath unfolder of the utility model;

[0025] Figure 4 It is a schematic diagram of the end of the positioning rod in the cable aluminum sheath expander of the utility model;

[0026] Figure 5 It is a schematic diagram of the aluminum sheath of the cable;

[0027] Among them, 1 is a barb, 2 is a handle, 3 is a support rod, 4 is a positioning rod, 4.1 is a mounting groove, 5 is a latch, 6 is an aluminum cable sheath, 6.1 is a wave crest, and 6.2 is a wave trough. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementations.

[0029] Example

[0030] like Figures 1 to 5As shown, the utility model cable aluminum sheath unfolder includes a positioning rod 4, a barb 1 for connecting with the cable aluminum sheath 6 and a handle 2 for providing unfolding force, the barb 1 is rotatably connected to the positioning rod 4 and is located at the end of the positioning rod 4, and the handle 2 is connected to the positioning rod 4; when working, the barb 1 is connected to the cable aluminum sheath 6 and serves as a force point, and the outer end surface of the positioning rod 4 is close to the cable aluminum sheath 6 as a support surface for the operation of the handle 2.

[0031] Specifically, the barb 1 is connected to the cable aluminum sheath 6, which means that the barb 1 hooks the gap opened by the cable aluminum sheath 6. The barb 1 is rotatably connected to the positioning rod 4 and is located at the end of the positioning rod 4, which means that the cable aluminum sheath spreader also includes a latch 5, the end of the positioning rod 4 is provided with a mounting groove 4.1 and a mounting hole, the latch 5 is rotatably mounted on the mounting hole, the barb 1 is connected to the latch 5 to achieve rotatable connection with the positioning rod 4, and the connection between the barb 1 and the latch 5 is in the mounting groove 4.1.

[0032] The cable aluminum sheath 6 has a crest 6.1 and a trough 6.2. When the outer end surface of the positioning rod 4 is close to the cable aluminum sheath 6, the positioning rod 4 at least fits two crests 6.1. This design can increase the contact area of ​​the fulcrum, thereby improving the effectiveness of stripping the cable aluminum sheath 6. In addition, the connection between the handle 2 and the positioning rod 4 is close to the end where the positioning rod 4 is connected to the barb 1, specifically located at one-third of the end where the positioning rod 4 is connected to the barb 1.

[0033] In order to improve the structural strength of the cable aluminum sheath spreader, the support rod 3, the handle 2 and the positioning rod 4 form an isosceles triangle. In addition, the positioning rod 4, the barb 1, the handle 2 and the support rod 3 are all made of high-strength, wear-resistant and corrosion-resistant materials such as carbon steel, stainless steel or alloy steel, so that the cable aluminum sheath spreader can ensure durability in various environments.

[0034] The utility model adopts the lever principle, and the barb 1 of the cable aluminum sheath spreader is connected to the cable aluminum sheath 6 and used as a force point, the outer end surface of the positioning rod 4 is close to the cable aluminum sheath 6 and used as a fulcrum, and the construction personnel operate the handle 2 to provide the load point required by the lever. The construction personnel can easily spread the cable aluminum sheath 6 by acting on the handle 2 and using the lever principle, thereby expanding the inner diameter of the cable aluminum sheath 6, separating the cable aluminum sheath 6 from the cable body, and meeting the requirements for stripping the cable aluminum sheath 6. The cable aluminum sheath spreader can not only improve the convenience of stripping the cable aluminum sheath 6 to improve the efficiency of stripping the cable aluminum sheath 6, but also the spreader does not contact the cable body, which can solve the problem of easily squeezing the insulation layer of the cable body during the current stripping process, thereby improving the manufacturing quality of the cable joint and improving the power supply reliability.

[0035] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A cable aluminum sheath expander, characterized in that: It includes a positioning rod, an expansion structure for connecting to the cable aluminum sheath and a handle for providing expansion force; the expansion structure is rotatably connected to the positioning rod and is located at the end of the positioning rod; the handle is connected to the positioning rod; when working, the expansion structure is connected to the cable aluminum sheath and serves as a force point, and the outer end surface of the positioning rod is close to the cable aluminum sheath as a support surface for the handle operation.

2. The cable aluminum sheath unroller according to claim 1, characterized in that: The deployment structure is a barb.

3. The cable aluminum sheath unroller according to claim 2, characterized in that: The connection between the unfolded structure and the cable aluminum sheath means that the barb hooks the gap opened by the cable aluminum sheath.

4. The cable aluminum sheath expander according to claim 2, characterized in that: The unfolding structure is rotatably connected to the positioning rod and is located at the end of the positioning rod, which means that: the cable aluminum sheath unfolder also includes a pin; the end of the positioning rod is provided with a mounting groove and a mounting hole, the pin is rotatably installed on the mounting hole, the barb is connected to the pin to achieve rotatable connection with the positioning rod, and the connection between the barb and the pin is in the mounting groove.

5. The cable aluminum sheath unroller according to claim 1, characterized in that: The cable aluminum sheath has wave crests and wave troughs; when the outer end surface of the positioning rod is pressed against the cable aluminum sheath, the positioning rod at least fits two wave crests.

6. The cable aluminum sheath unroller according to claim 1, characterized in that: The connection between the handle and the positioning rod is close to the end of the positioning rod connected to the deployment structure.

7. The cable aluminum sheath unroller according to claim 6, characterized in that: The connection point between the handle and the positioning rod is located at one third of the connection end of the positioning rod and the unfolding structure.

8. The cable aluminum sheath unroller according to any one of claims 1 to 7, characterized in that: The cable aluminum sheath unfolder also includes a support rod; one end of the support rod is connected to the handle, and the other end of the support rod is connected to the positioning rod.

9. The cable aluminum sheath unroller according to claim 8, characterized in that: The support rod, the handle and the positioning rod form an isosceles triangle.

10. The cable aluminum sheath unroller according to claim 8, characterized in that: The positioning rod, the unfolding structure, the handle and the support rod are all made of carbon steel, stainless steel or alloy steel.

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