Cable protection device and iron tower

Abstract

The utility model relates to the technical field of electric power facilities, and provides a cable protection device and an iron tower. The cable protection device comprises a protection tube used for sleeving the outer side of a cable; the connecting assembly is connected with the protection pipe and used for being connected with an iron tower; one end of the flaring structure is connected to the end, used for stretching into the ground, of the protection pipe, the other end of the flaring structure extends in the direction away from the protection pipe, and the cross section, perpendicular to the axial direction of the protection pipe, of the flaring structure is gradually increased from the end, located above the ground, of the protection pipe to the end, located below the ground, of the protection pipe. The contact area of the flaring structure and the soil is larger, so that the bonding strength of the flaring structure and the soil is higher, in addition, when the soil covers the flaring structure, the soil can tightly press the flaring structure, and the flaring structure tends to be stable. And the protection tube is connected with the flaring structure, so that the protection tube can be kept stable under the action of the flaring structure and is not easy to incline.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power facilities, in particular to a cable protection device and an iron tower. Background Art

[0002] Transmission line towers are important infrastructure used to erect high-voltage, ultra-high-voltage and even UHV transmission lines in power systems. These towers are mainly responsible for supporting and fixing conductors, ground wires and other accessories (such as insulator strings, hardware, etc.) to ensure that the transmission lines can reliably transmit electrical energy at a safe distance.

[0003] In cities, due to land shortage and urban appearance construction, cables are usually laid underground, so it is often necessary to introduce cables on the tower into the underground. In order to protect the cables from the tower to the underground, a protective tube is usually installed on the outside of this part of the cable in the prior art. One end of the protective tube is inserted into the ground, and the other end is connected to the tower frame of the tower.

[0004] Since the cable is led vertically down from the tower and turns horizontally after entering the ground, the cable has a bending effect. The bent cable has a tendency to recover its deformation, which causes the cable to exert force on the protection tube. However, the lower end of the protection tube is only inserted below the ground, and its lateral bearing capacity is poor. Therefore, under the drive of the cable, the lower end of the protection tube is prone to lateral displacement, causing the protection tube to tilt, affecting the temporary land acquisition range of the tower. Utility Model Content

[0005] The utility model provides a cable protection device and an iron tower, which are used to solve or improve the defect in the prior art that the lower end of a protection pipe is prone to lateral displacement, causing the protection pipe to tilt, and achieve the effect of reducing the tilt of the protection pipe.

[0006] The utility model provides a cable protection device, comprising:

[0007] A protective tube, the protective tube is used to be sleeved on the outside of the cable;

[0008] A connecting assembly, the connecting assembly is connected to the protection pipe, and the connecting assembly is used to connect to the iron tower;

[0009] A flared structure, one end of which is connected to an end of the protective tube extending below the ground, and the other end of the flared structure extends in a direction away from the protective tube, and the cross-section of the flared structure perpendicular to the axial direction of the protective tube gradually increases from the end of the protective tube above the ground to the end below the ground.

[0010] According to a cable protection device provided by the utility model, the protection tube is configured as a round tube, and correspondingly, the expansion structure is configured as a truncated cone structure;

[0011] Alternatively, the protection tube is configured as a square tube, and correspondingly, the flaring structure is configured as a prism structure.

[0012] According to a cable protection device provided by the utility model, the flaring structure is connected to the protection tube by plugging, bonding, threading or threaded fasteners.

[0013] According to a cable protection device provided by the utility model, the expansion structure is configured as a plastic structure.

[0014] According to a cable protection device provided by the utility model, the connecting assembly includes a clamp and a connecting piece, the clamp is sleeved on the outside of the protection tube, and the parts of the clamp located on both sides of the protection tube are provided with connecting ears, each of the connecting ears is provided with a through hole for the connecting piece to pass through, and the connecting piece is connected to the iron tower.

[0015] According to a cable protection device provided by the utility model, the protection tube includes a first straight tube section, a reduced diameter section and a second straight tube section connected in sequence, the clamp is sleeved on the reduced diameter section and the two can slide relative to each other, at least in the first direction, the size of the first straight tube section and the size of the second straight tube section are both larger than the size of the reduced diameter section, the first direction is perpendicular to the axial direction of the protection tube, and the first straight tube section and the second straight tube section can alternatively abut against the clamp.

[0016] According to a cable protection device provided by the utility model, the through hole is configured as a waist-shaped hole extending along the axial direction of the protection tube.

[0017] According to a cable protection device provided by the utility model, the clamp is configured as an aluminum alloy structure.

[0018] According to a cable protection device provided by the utility model, the surface of the protection tube is provided with a galvanized layer.

[0019] The utility model also provides an iron tower, comprising the cable protection device as described above.

[0020] The cable protection device provided by the utility model can protect the cable by sleeved on the outer side of the cable through the protection tube. The protection tube can be connected and fixed to the iron tower through the connecting component.

[0021] By providing a flared structure, and gradually increasing the cross section of the flared structure perpendicular to the axial direction of the protection pipe from one end of the protection pipe located above the ground to the other end below the ground, the contact area between the flared structure and the soil is larger, so the bonding strength between the flared structure and the soil is greater, and the problem of displacement is less likely to occur. In addition, when the soil covers the flared structure, the flared structure is subjected to a greater downward force from the soil, that is, the soil can compress the flared structure, so the flared structure can also be made more stable. The protection pipe is connected to the flared structure, so the protection pipe can remain stable under the action of the flared structure and is not prone to tilting.

[0022] In addition, the flared structure has a larger cross-section, so when the cable is laid along the flared structure, the flared structure has less obstruction to the cable and will not affect the laying of the cable, making the construction of the cable protection device less difficult.

[0023] The iron tower provided by the utility model includes the cable protection device provided by the utility model, and thus includes all the above advantages of the cable protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the structure of the cable protection device provided in some embodiments of the utility model.

[0026] Reference numerals:

[0027] 1. Cable; 2. Protective tube; 201. First straight pipe section; 202. Reduced diameter section; 203. Second straight pipe section; 3. Connecting assembly; 301. Connecting ear; 302. Through hole; 4. Expanding structure; 5. Ground. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In order to protect the cables from the iron tower to the underground, a protective tube is usually sheathed on the outside of this part of the cable in the prior art. One end of the protective tube is inserted into the underground, and the other end is connected to the tower frame of the iron tower.

[0030] Since the cable is led vertically from the tower and turns horizontally after entering the ground, the cable has a bending effect. The bent cable has a tendency to recover its deformation, which causes the cable to exert force on the protective tube. However, the lower end of the protective tube is only inserted below the ground, and its lateral bearing capacity is poor. Therefore, under the drive of the cable, the lower end of the protective tube is prone to lateral displacement, causing the protective tube to tilt.

[0031] In addition, since the towers are usually set up in wild areas where there are many animals, such as cows or sheep, these animals often rub against the protective pipes, which can easily cause the protective pipes to tilt.

[0032] In order to solve or improve the defect in the prior art that the lower end of the protection tube is prone to lateral displacement, causing the protection tube to tilt, and to achieve the effect of reducing the tilt of the protection tube, a cable protection device and an iron tower are provided in the embodiment of the utility model.

[0033] Combine the following Figure 1 The cable protection device provided in the embodiment of the utility model is described.

[0034] Specifically, the cable protection device includes a protection tube 2 , a connection component 3 and a flaring structure 4 .

[0035] The protection tube 2 is used to be sleeved on the outside of the cable 1 .

[0036] The connecting assembly 3 is connected to the protection pipe 2, and the connecting assembly 3 is used to connect to the iron tower. Figure 1 As shown, the upper end of the protection pipe 2 is connected to the iron tower through the connection assembly 3, and the lower end of the protection pipe 2 extends below the ground 5.

[0037] One end of the flared structure 4 is connected to the end of the protection tube 2 for extending below the ground 5, and the other end of the flared structure 4 extends in a direction away from the protection tube 2. In addition, the cross section of the flared structure 4 perpendicular to the axial direction of the protection tube 2 gradually increases from the end of the protection tube 2 above the ground 5 to the end below the ground 5. It can also be said that when the cable protection device is in use, the flared structure 4 is arranged below the ground 5 and is arranged downward.

[0038] The cable protection device provided in the embodiment of the utility model can protect the cable 1 by sleeve-fitting the protection tube 2 on the outside of the cable 1. The protection tube 2 can be connected and fixed to the iron tower by the connecting component 3.

[0039] By providing the flared structure 4, and gradually increasing the cross section of the flared structure 4 perpendicular to the axial direction of the protection tube 2 from the end of the protection tube 2 above the ground 5 to the end below the ground 5, the contact area between the flared structure 4 and the soil is larger, so the bonding strength between the flared structure 4 and the soil is greater, and the problem of displacement is less likely to occur. In addition, when the soil covers the flared structure 4, the flared structure 4 is subjected to a greater downward force from the soil, that is, the soil can compress the flared structure 4, so that the flared structure 4 can also be made more stable. The protection tube 2 is connected to the flared structure 4, so the protection tube 2 can remain stable under the action of the flared structure 4 and is not prone to tilting.

[0040] In addition, the flared structure 4 has a larger cross-section, so when the cable 1 is passed along the flared structure 4, the flared structure 4 has less obstruction to the cable 1 and will not affect the passing of the cable 1, making the construction of the cable protection device less difficult.

[0041] In some embodiments provided by the present invention, the protection tube 2 is configured as a round tube, and accordingly, the expansion structure 4 is configured as a truncated cone structure. By configuring the protection tube 2 as a round tube, the manufacturing difficulty and cost of the protection tube 2 are lowered.

[0042] Of course, the protection tube 2 is not limited to being set as a round tube. For example, in other embodiments provided by the present invention, the protection tube 2 is set as a square tube, and accordingly, the flaring structure 4 is set as a prism structure.

[0043] In some embodiments provided by the utility model, the flared structure 4 is plug-connected with the protection tube 2. For example, a ring groove structure can be provided on the flared structure 4, and the protection tube 2 is inserted into the ring groove structure of the flared structure 4. Of course, the reverse is also possible, that is, a ring groove structure is provided on the protection tube 2, and the flared structure 4 is inserted into the ring groove structure on the protection tube 2. With such a configuration, the connection between the flared structure 4 and the protection tube 2 is convenient.

[0044] Of course, the flaring structure 4 is not limited to being plugged into the protective tube 2. For example, in other embodiments provided by the present invention, the flaring structure 4 is adhesively connected to the protective tube 2. For example, the flaring mechanism is adhesively connected to the protective tube 2 via an adhesive. In this way, there is no need to provide a connecting structure on the flaring structure 4 and the protective tube 2, thereby making the structures of the flaring structure 4 and the protective tube 2 simpler, and reducing the processing difficulty and cost.

[0045] Of course, the flared structure 4 is not limited to being bonded to the protection tube 2. For example, in other embodiments provided by the present invention, the flared structure 4 is threadedly connected to the protection tube 2. For example, one of the flared structure 4 and the protection tube 2 is provided with an internal thread structure, and the other is provided with an external thread structure, and the flared structure 4 and the protection tube 2 are threadedly connected via the internal thread structure and the external thread structure. In this way, the flared structure 4 and the protection tube 2 are firmly connected and have good reliability.

[0046] Alternatively, the flared structure 4 and the protective tube 2 may also be connected via threaded fasteners, which include but are not limited to screws or bolts.

[0047] In some embodiments provided by the present invention, the flared structure 4 is configured as a plastic structure so that the lower edge of the flared structure 4 will not cut the cable 1 .

[0048] Optionally, the plastic structure is made of CPVC or HDPE.

[0049] In some embodiments provided by the present invention, the connection assembly 3 includes a clamp and a connector.

[0050] The clamp is sleeved on the outside of the protection tube 2, and the parts of the clamp located on both sides of the protection tube 2 are provided with connection ears 301. Optionally, the clamp is set to an aluminum alloy structure. Each connection ear 301 is provided with a through hole 302 for a connecting piece to pass through. The connecting piece is connected to the iron tower. For example, the connecting piece is set to a screw or a bolt.

[0051] With such a configuration, the protective tube 2 can be laterally limited by the clamp sleeved on the outside of the protective tube 2 to prevent the protective tube 2 from tipping over. In addition, when the ground 5 rises or sinks due to frost heave, the protective tube 2 can slide relative to the clamp as the ground 5 rises and falls, so that the cable 1 can rise and fall with the ground 5, releasing the tensile stress, avoiding the problem that the protective tube 2 is fixed and restricts the stretching of the cable 1, causing the tensile stress of the cable 1 to be too large, resulting in damage to the cable 1 or the protective tube 2.

[0052] In some embodiments provided by the present invention, the protection tube 2 includes a first straight tube section 201, a reduced diameter section 202, and a second straight tube section 203 which are connected in sequence.

[0053] The clamp is sleeved on the reduced diameter section 202 and the two can slide relative to each other. At least in the first direction, the size of the first straight pipe section 201 and the size of the second straight pipe section 203 are both larger than the size of the reduced diameter section 202. The first direction is perpendicular to the axial direction of the protective tube 2. The first straight pipe section 201 and the second straight pipe section 203 can alternatively abut against the clamp.

[0054] In this embodiment, when the ground 5 sinks, the reduced diameter section 202 of the protection tube 2 slides relative to the clamp. When the ground 5 sinks too much, the first straight tube section 201 abuts against the clamp to prevent the protection tube 2 from further moving downward with the ground 5, thereby avoiding the problem of the protection tube 2 completely escaping from the clamp due to excessive displacement. Similarly, when the ground 5 rises too much, the second straight tube section 203 abuts against the clamp to prevent the protection tube 2 from further rising, thereby preventing the protection tube 2 from excessive displacement.

[0055] Optionally, the first straight pipe section 201, the reduced diameter section 202 and the second straight pipe section 203 are an integrated structure, and the reduced diameter section 202 may be a flat pipe structure formed by hammering or rolling the protection pipe 2. Figure 1 The left and right direction in the drawing can also be the direction perpendicular to the paper surface.

[0056] Of course, the first straight pipe section 201, the reduced diameter section 202 and the second straight pipe section 203 can be welded in sequence. The reduced diameter section 202 can be a flat tube structure formed by hammering or rolling a round tube or a square tube, or a tube body with a cross section smaller than the cross section of the first straight pipe section 201 and the cross section area of ​​the second straight pipe section 203.

[0057] refer to Figure 1 As shown, in some embodiments provided by the present invention, the through hole 302 is configured as a waist-shaped hole extending along the axial direction of the protection tube 2 .

[0058] With such a configuration, when the ground 5 rises and falls, even if the protective tube 2 and the clamp cannot slide relative to each other, the clamp can slide up and down relative to the iron tower under the action of the through hole 302 and the connector, so that the cable 1 can rise and fall with the ground 5, releasing the tensile stress, and avoiding the problem that the protective tube 2 is fixed and restricts the stretching of the cable 1, causing the tensile stress of the cable 1 to be too large, resulting in damage to the cable 1 or the protective tube 2. That is, double insurance is formed by the relative sliding of the clamp and the protective tube 2 and the relative sliding of the clamp and the iron tower through the waist-shaped hole, reducing the problem of damage to the cable 1 or the cable protection device caused by the ground rising and falling.

[0059] In some embodiments provided by the present invention, a zinc coating is provided on the surface of the protection tube 2. Such a configuration can avoid the problem of rusting of the protection tube 2 and extend the service life of the protection tube 2.

[0060] An iron tower is also provided in an embodiment of the utility model.

[0061] Specifically, the tower comprises the cable protection device as described above.

[0062] It should be noted that the iron tower includes a cable protection device, which also includes all the above-mentioned advantages of the cable protection device, which will not be repeated here.

[0063] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0064] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "first aspect embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A cable protection device, characterized in that: include: A protective tube (2), the protective tube (2) being used to be sleeved on the outside of the cable (1); A connecting component (3), the connecting component (3) being connected to the protection pipe (2), and the connecting component (3) being used to be connected to an iron tower; A flared structure (4), one end of the flared structure (4) is connected to an end of the protective tube (2) for extending below the ground (5), the other end of the flared structure (4) extends in a direction away from the protective tube (2), and along the direction from the end of the protective tube (2) above the ground (5) to the end below the ground (5), the cross section of the flared structure (4) perpendicular to the axial direction of the protective tube (2) gradually increases.

2. The cable protection device according to claim 1, characterized in that: The protection tube (2) is configured as a round tube, and correspondingly, the flaring structure (4) is configured as a truncated cone structure; Alternatively, the protection tube (2) is configured as a square tube, and correspondingly, the flared structure (4) is configured as a prism structure.

3. The cable protection device according to claim 1, characterized in that: The flared structure (4) is connected to the protective tube (2) by plugging, bonding, threading or threaded fasteners.

4. The cable protection device according to claim 1, characterized in that: The flaring structure (4) is configured as a plastic structure.

5. The cable protection device according to any one of claims 1 to 4, characterized in that: The connection assembly (3) comprises a clamp and a connecting piece, the clamp is sleeved on the outside of the protection tube (2), and the parts of the clamp located on both sides of the protection tube (2) are provided with connecting ears (301), each of the connecting ears (301) is provided with a through hole (302) for the connecting piece to pass through, and the connecting piece is connected to the iron tower.

6. The cable protection device according to claim 5, characterized in that: The protective tube (2) comprises a first straight tube section (201), a reduced diameter section (202) and a second straight tube section (203) which are connected in sequence; the clamp is sleeved on the reduced diameter section (202) and the two can slide relative to each other; at least in a first direction, the size of the first straight tube section (201) and the size of the second straight tube section (203) are both larger than the size of the reduced diameter section (202); the first direction is perpendicular to the axial direction of the protective tube (2); and the first straight tube section (201) and the second straight tube section (203) can selectively abut against the clamp.

7. The cable protection device according to claim 5, characterized in that: The through hole (302) is configured as a waist-shaped hole extending along the axial direction of the protection tube (2).

8. The cable protection device according to claim 5, characterized in that: The clamp is configured as an aluminum alloy structure.

9. The cable protection device according to any one of claims 1 to 4, characterized in that: The surface of the protective tube (2) is provided with a galvanized layer.

10. An iron tower, characterized in that: Comprising the cable protection device according to any one of claims 1-9.

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