Cable accessory mounting device

Abstract

The utility model relates to the field of cable accessories, in particular to a cable accessory mounting device, which comprises inflating equipment, a sleeve with one closed end is connected onto the inflating equipment, a diameter expanding arm is arranged on the sleeve, a diameter expanding strip is arranged in the diameter expanding arm in a sliding fit manner, a diameter expanding pipe is sleeved outside the sleeve, and the diameter expanding pipe is sleeved outside the sleeve. According to the utility model, the expanding arm and the expanding pipe are arranged, and high-pressure gas is used for pushing the expanding pipe to extend outwards, so that the cable accessory expands without friction, and when the cable accessory is sleeved on the cable, friction-free sleeving can be realized, the cable and the cable accessory are not damaged, the installation quality of the accessory is improved, and the failure rate of a cable system is reduced.

Description

Technical Field

[0001] The utility model relates to the field of cable accessories, in particular to a cable accessory installation device. Background Art

[0002] Cold-shrink cable accessories are compact and easy to use. However, if they are exposed to high tension for extended periods before installation, they can easily become permanently deformed or lose their elasticity. Therefore, for voltage levels of 110kV and above, where performance requirements are high, cold-shrink cable accessories are typically expanded on-site. Most existing cable accessory expansion devices rub against the inner wall of the cable accessory during the expansion and sleeve process, potentially damaging it.

[0003] Therefore, those skilled in the art are committed to developing a frictionless cable accessory installation device and diameter expansion method. Utility Model Content

[0004] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a frictionless cable accessory installation device and a diameter expansion method.

[0005] To achieve the above-mentioned purpose, the utility model provides a cable accessory installation device, including an inflation device, to which a sleeve with a closed end is connected, an expansion arm is provided on the sleeve, an expansion strip is slidably fitted inside the expansion arm, and an expansion tube is sleeved outside the sleeve.

[0006] Preferably, the expansion arm is communicated with the sleeve, a slider is slidably fitted in the expansion arm, and the end of the slider away from the sleeve is fixedly connected to the expansion bar.

[0007] Preferably, the expansion arms are arranged in four groups, and one group includes two symmetrically arranged expansion arms.

[0008] Preferably, a groove corresponding to the expansion arms is opened on the inner side of the expansion tube, and the expansion arm is located in the groove at one end away from the sleeve.

[0009] Preferably, the axis of the expansion arm is perpendicular to the axis of the casing.

[0010] Preferably, the expanded tube includes a first expanded plate and a second expanded plate, and the first expanded plate and the second expanded plate are detachably connected.

[0011] Preferably, the first diameter-expanding plate and the second diameter-expanding plate are respectively provided with a first bottom plate and a second bottom plate at one end close to the inflatable device.

[0012] Preferably, the first bottom plate is provided with a first support ear and a second support ear at both ends, and the second bottom plate is provided with a third support ear and a fourth support ear at both ends;

[0013] A first support rod is provided between the first support lug and the third support lug, and a second support rod is provided between the second support lug and the fourth support lug.

[0014] The beneficial effects of the present invention are as follows: the present invention provides an expansion arm and an expansion tube, and uses high-pressure gas to push the expansion tube outward, thereby allowing the cable accessories to expand without friction. When being sleeved onto the cable, frictionless sleeve connection can also be achieved without damaging the cable and cable accessories, thereby improving the installation quality of the accessories and reducing the failure rate of the cable system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an assembly diagram of a specific implementation method of the utility model.

[0016] Figure 2 yes Figure 1 Enlarged structural diagram at point A in the middle

[0017] Figure 3 It is a side view of a sleeve in a specific embodiment of the present invention.

[0018] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of AA.

[0019] Figure 5 It is a structural schematic diagram of the second expanded tube in a specific embodiment of the present utility model.

[0020] Figure 6 It is a schematic diagram of the assembly of the first diameter expansion plate and the second diameter expansion plate in a specific embodiment of the present invention.

[0021] 1. Inflatable device; 2. Sleeve; 3. Expansion arm; 4. Expansion strip; 5. Expansion tube; 51. First expansion plate; 52. Second expansion plate; 6. Slider; 7. Groove; 81. First base plate; 81a. First lug; 81b. Second lug; 82. Second base plate; 82a. Third lug; 82b. Fourth lug; 91. First support rod; 92. Second support rod; 10. Cable accessories. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, in the description of the present invention, the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicating directions or positions, are based on the directions or positions shown in the accompanying drawings and are intended solely for the purpose of facilitating and simplifying the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific manner. Therefore, they should not be construed as limiting the present invention. The terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] like Figure 1-6 As shown, a cable accessory installation device includes an inflation device 1. The inflation device 1 can adopt a common inflation pump on the market. A threaded connection is adopted between the inflation device 1 and the sleeve 2 to ensure the connection strength and air tightness. An expansion arm 3 is provided on the sleeve 2. The expansion arm 3 is connected to the sleeve 2. A slider 6 is slidably fitted in the expansion arm 3. In this embodiment, the sliding fit is a clearance fit. The slider 6 is made of a low-friction material. The slider 6 is fixedly connected to the expansion strip 4 at one end away from the sleeve 2. The expansion strip 4 extends axially along the expansion arm 3. The expansion strip 4 has a smooth appearance and an outer diameter smaller than the inner diameter of the expansion arm 3, so that it is easy to expand. An expansion tube 5 is provided on the outer sleeve 2. The expansion tube 5 is hollow cylindrical and includes a first expansion plate 51 and a second expansion plate 52. The first expansion plate 51 and the second expansion plate 52 are detachably connected.

[0024] In this embodiment: the expansion arms 3 are set to 4 groups, one group includes two symmetrically arranged expansion arms 3, and the number of expansion arms 3 is determined according to actual conditions. In other embodiments, other numbers of expansion arms 3 can be used. The inner side of the expansion tube 5 is provided with grooves 7 corresponding to the expansion arms 3 one by one. The end of the expansion arm 3 away from the sleeve 2 is located in the groove 7. The end of the expansion arm 3 away from the sleeve 2 can be made of magnetic material so that it can adsorb the expansion tube 5, which is convenient for operation during the early installation process.

[0025] In this embodiment: the outer diameter of the expansion tube 5 is slightly smaller than the inner diameter of the cable accessory 10, and the outer wall of the expansion tube 5 is smooth to avoid damage to the inner wall of the cable accessory 10. The axis of the expansion arm 3 is perpendicular to the axis of the sleeve 2, so that the inner wall of the cable accessory 10 is evenly stressed.

[0026] In this embodiment: the diameter expansion tube 5 includes a first diameter expansion plate 51 and a second diameter expansion plate 52. The first diameter expansion plate 51 and the second diameter expansion plate 52 are respectively provided with a radially extending first bottom plate 81 and a second bottom plate 82 near one end of the inflatable device 1. The first bottom plate 81 is respectively provided with a first support ear 81a and a second support ear 81b at both ends, and the second bottom plate 82 is respectively provided with a third support ear 82a and a fourth support ear 82b at both ends. A first support rod 91 is used to support the first support ear 81a and the third support ear 82a. Similarly, a second support rod 92 is used to support the second support ear 81b and the fourth support ear 82b. After the support is completed, the sleeve 2 is removed, and the cable accessory 10 is sleeved onto the outside of another section of the cable. The first diameter expansion plate 51 and the second diameter expansion plate 52 are removed through the first bottom plate 81 and the second bottom plate 82. The cable accessory 10 naturally shrinks without external force and is sleeved onto the cable.

[0027] During use, the sleeve 2 is connected to the inflation device 1, and then the sleeve 2 is inserted into the cable accessory 10. Then, under the push of high-pressure gas, the slider 6 slides outward along the inner wall of the expansion arm 3, and the expansion bar 4 fixedly connected to the slider 6 pushes the first expansion tube 51 and the second expansion tube 52 to move synchronously relative to each other, so as to achieve the purpose of expanding the cable accessory 10. After the expansion is completed, the first bottom plate 81 and the second bottom plate 82 are supported to remove the sleeve 2. After removing the sleeve 2, the cable accessory 10 with the expansion tube 5 is sleeved onto another section of cable. The expansion tube 5 is removed, and the cable accessory 10 naturally contracts without external force, completing the entire expansion and sleeve process. Through this series of operations, the frictionless expansion and frictionless sleeve of the cable accessory 10 can be effectively realized, the installation quality of the cable accessory 10 can be improved, and the failure rate of the cable system can be reduced.

[0028] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A cable accessory installation device, comprising an inflatable device (1), characterized in that: The inflation device (1) is connected to a sleeve (2) with a closed end, the sleeve (2) is provided with an expansion arm (3), an expansion strip (4) is slidably fitted inside the expansion arm (3), and the sleeve (2) is sheathed with an expansion tube (5).

2. The cable accessory installation device according to claim 1, wherein: The expansion arm (3) is in communication with the sleeve (2), and a slider (6) is slidably fitted in the expansion arm (3). The end of the slider (6) away from the sleeve (2) is fixedly connected to the expansion bar (4).

3. The cable accessory installation device according to claim 1, wherein: The diameter-expanding arms (3) are arranged in four groups, with one group comprising two symmetrically arranged diameter-expanding arms (3).

4. The cable accessory installation device according to claim 1, wherein: A groove (7) corresponding to the expansion arm (3) is formed on the inner side of the expansion tube (5), and the end of the expansion arm (3) away from the sleeve (2) is located in the groove (7).

5. The cable accessory installation device according to claim 4, wherein: The axis of the expansion arm (3) is perpendicular to the axis of the sleeve (2).

6. The cable accessory installation device according to claim 1, wherein: The expanded tube (5) comprises a first expanded plate (51) and a second expanded plate (52), and the first expanded plate (51) and the second expanded plate (52) are detachably connected.

7. The cable accessory installation device according to claim 6, wherein: The first diameter expansion plate (51) and the second diameter expansion plate (52) are respectively provided with a first bottom plate (81) and a second bottom plate (82) at one end close to the inflatable device (1).

8. The cable accessory installation device according to claim 1, wherein: The first bottom plate (81) is provided with a first support ear (81a) and a second support ear (81b) at both ends, and the second bottom plate (82) is provided with a third support ear (82a) and a fourth support ear (82b) at both ends; A first support rod (91) is provided between the first support lug (81a) and the third support lug (82a), and a second support rod (92) is provided between the second support lug (81b) and the fourth support lug (82b).

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