Cable traction joint, cable assembly and cable traction system

Abstract

The embodiment of the utility model provides a cable traction joint, a cable assembly and a cable traction system, and relates to the technical field of cable installation. The cable traction joint comprises a lug plate, a traction cylinder and an annular tensile glue layer. The lug plate is used for being connected with traction equipment. One end of the traction cylinder is a closed end, the other end of the traction cylinder is an open end, the closed end is connected with the lug plate, and the open end is used for sleeving a cable; the outer wall of the annular tensile glue layer is connected with the inner wall of the traction cylinder, and the inner wall of the annular tensile glue layer is used for being connected with the peripheral wall of a cable. When the cable traction joint is installed on a cable, the cable traction joint and the cable are connected and fixed through the annular tensile glue layer, so that cables made of different materials can be tightly connected with the traction cylinder of the cable traction joint, slipping is prevented, and meanwhile the cable traction joint has high tensile capacity. In addition, the cable traction joint has waterproof sealing capability.

Description

Technical Field

[0001] The utility model relates to the technical field of cable installation, and in particular to a cable pulling joint, a cable assembly and a cable pulling system. Background Art

[0002] Cable is a device for transmitting energy or signals. When installing cables, a cable tractor is needed to install the cables to the designated location. Cable tractors are widely used in the construction of power and postal lines to assemble towers or motorized line laying. Therefore, it is necessary to install cable connectors on the cables to facilitate the cable tractor to pull them.

[0003] However, the cable traction joint is generally made of rigid material, and the land cable is generally wrapped with a lead sheath. Due to the different materials of the two, the connection may not be tight, the cable may slip, and the waterproof sealing effect cannot be achieved. Utility Model Content

[0004] The utility model provides a cable pulling joint, a cable assembly and a cable pulling system, which can tightly connect cables and the cable pulling joint made of different materials while having the pulling resistance and preventing slipping.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] The embodiment of the utility model provides a cable pulling joint, which comprises:

[0007] Lug plate, which is used to connect with the traction equipment;

[0008] A traction cylinder, one end of which is a closed end and the other end of which is an open end, the closed end is connected to the ear plate, and the open end is used for sheathing the cable;

[0009] An annular tensile adhesive layer, the outer wall of which is connected to the inner wall of the traction cylinder, and the inner wall of which is used to be connected to the outer peripheral wall of the cable.

[0010] In an optional embodiment, the traction cylinder includes an outer cylinder and a bushing, one end of the outer cylinder is a closed end, and the other end of the outer cylinder is an open end; the bushing is located in the outer cylinder and connected to the outer cylinder; the outer wall of the annular tensile glue layer is connected to the inner wall of the bushing.

[0011] In an optional embodiment, the bushing is a tapered bushing, and the bushing includes a large end and a small end, the large end is close to the ear plate, and the small end is close to the opening end.

[0012] In an optional embodiment, the inner wall of the bushing is provided with an internal thread, and the internal thread is used to cooperate with the external thread on the sheath of the cable.

[0013] In an optional embodiment, the cable traction joint further comprises a sealing cover plate, which is located in the outer cylinder and close to the closed end, and the sealing cover plate is connected to the bushing.

[0014] In an optional embodiment, the cable pulling joint further includes a sealing ring, wherein the sealing ring is located between the sealing cover plate and the bushing.

[0015] In an optional embodiment, a plurality of bolts are distributed at intervals around the periphery of the sealing cover plate, and the sealing cover plate is connected to the bushing via the plurality of bolts.

[0016] In an optional embodiment, the annular tensile adhesive layer is made of steel cord resin.

[0017] An embodiment of the utility model further provides a cable assembly, comprising a cable and the above-mentioned cable traction connector, wherein the cable is connected to the open end of the traction drum, and the cable is connected and fixed to the traction drum via an annular tensile-resistant glue layer.

[0018] An embodiment of the utility model further provides a cable traction system, comprising a traction device and the above-mentioned cable traction connector, wherein the traction end of the traction device is connected to the ear plate and is used to traction the cable through the cable traction connector.

[0019] The beneficial effects of the cable pulling connector, cable assembly and cable pulling system of the utility model embodiment include:

[0020] When the cable pulling joint needs to be installed on the cable, the cable pulling joint is connected and fixed to the cable through the annular tensile adhesive layer, so that the cable and the pulling tube of the cable pulling joint can be firmly connected to prevent slipping, and it also has strong tensile resistance. In addition, by connecting the cable and the pulling tube through the annular tensile adhesive layer, cables of different materials and the pulling tube can be tightly connected to the cable pulling joint, so that the cable pulling joint has waterproof sealing ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of a cable assembly provided in an embodiment of the present utility model from a first viewing angle;

[0023] Figure 2 A schematic diagram of a cable assembly provided in an embodiment of the present utility model from a second viewing angle;

[0024] Figure 3 A schematic diagram of the AA section provided in an embodiment of the present utility model;

[0025] Figure 4 It is a schematic diagram of the BB section provided in the embodiment of the present utility model.

[0026] Icons: 1000-cable assembly; 100-cable traction joint; 110-traction cylinder; 111-bushing; 1111-big end; 1112-small end; 112-outer cylinder; 1121-closed end; 1122-open end; 120-annular tensile glue layer; 130-sealing cover plate; 131-bolt; 140-sealing ring; 150-ear plate; 200-cable. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0031] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0032] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0033] Cable is a device for transmitting energy or signals. When installing cables, traction equipment, such as cable traction machines, are required to install the cables to the designated locations. Cable traction machines are widely used in the construction of power and postal lines to assemble poles or motorized line laying. Therefore, it is necessary to install cable connectors on the cables to facilitate the traction of cable traction machines. However, cable traction connectors are generally made of rigid materials, and the land cables are generally wrapped with a lead sheath. Due to the different materials of the two, the connection may not be tight, and the cable may slip.

[0034] The cable is usually composed of four parts: a core (conductor), an insulating layer, a shielding layer, and a cable sheath. The core is the conductive part of the power cable, which is used to transmit electrical energy and is the main part of the power cable. The insulating layer electrically isolates the core from the ground and the cores of different phases from each other to ensure the transmission of electrical energy. It is an indispensable component in the structure of the power cable. The shielding layer plays a role in limiting the electric field and electromagnetic interference. In order to protect the cable, the outermost layer of the cable is generally covered with a cable sheath. The cable protective sheath material can generally be divided into metal materials and non-metallic materials. Metal materials generally include copper sheaths, aluminum sheaths, etc. Non-metallic sheaths are divided into polyethylene, polyethylene, polypropylene, nylon, fluoroplastics, silicone rubber, butyl rubber, sulfonated polyethylene, etc. In order to save costs while ensuring the tensile strength of the cable traction joint, the cable traction joint is usually made of steel. The outer cylinder 112 in this embodiment is made of stainless steel. Therefore, the material of the cable traction joint is different from the material of the protective sheath on the outer layer of the cable. The materials of the copper sheath, lead sheath and other sheaths are soft materials, and steel is a rigid material. When the rigid material and the soft metal are connected, there may be inconvenience in connection and the connection may not be tight and firm.

[0035] Based on this, please refer to Figure 1 and Figure 2 The cable pulling connector 100, cable assembly 1000 and cable pulling system provided in the utility model can solve the above-mentioned technical problems. The cable pulling connector 100, cable assembly 1000 and cable pulling system can tightly connect cables 200 of different materials and the cable pulling connector 100, have tensile strength, prevent slipping, and have waterproof sealing performance.

[0036] The cable traction system provided in this embodiment includes a traction device and a cable traction connector 100. The traction end of the traction device is connected to the ear plate 150 and is used to pull the cable 200 through the cable traction connector 100. Specifically, the traction device can be a cable traction machine. The cable traction machine is a new type of wire and cable construction machine developed on the basis of a multifunctional wire-reeling machine. It has the characteristics of small size and flexible and convenient use. It is more suitable for narrow road sections, especially for cable 200 construction in cities. The traction function is the same as the traction function of the multifunctional wire-reeling machine. It can not only pull the unfolded wire and cable 200, but also be used for tightening wires, erecting poles, etc.

[0037] Figure 1 This is a schematic diagram of a cable assembly 1000 provided in an embodiment of the present utility model from a first viewing angle. Figure 2 for Figure 1 Another perspective diagram, such as Figure 1 and Figure 2 As shown, the cable assembly 1000 provided in this embodiment includes a cable 200 and a cable traction connector 100 , the cable 200 is connected to the open end 1122 of the traction cylinder 110 , and the cable 200 is connected and fixed to the traction cylinder 110 via an annular tensile glue layer 120 .

[0038] The specific structure of the cable pulling connector 100 is introduced in detail below.

[0039] See also Figure 1 and Figure 2 , and combined with Figure 3 , Figure 3The AA section diagram provided in the embodiment of the utility model, the cable traction joint 100 in the embodiment comprises an ear plate 150, a traction cylinder 110 and an annular tensile glue layer 120, the ear plate 150 is used to connect with the traction equipment; one end of the traction cylinder 110 is a closed end 1121, the other end of the traction cylinder 110 is an open end 1122, the closed end 1121 is connected to the ear plate 150, and the open end 1122 is used to cover the cable 200; the outer wall of the annular tensile glue layer 120 is connected to the inner wall of the traction cylinder 110, and the inner wall of the annular tensile glue layer 120 is used to connect with the outer peripheral wall of the cable 200. The annular tensile glue layer 120 is poured into the traction cylinder 110 from the open end 1122 of the traction cylinder 110, and the tensile glue forms a semi-solid glue layer in the traction cylinder 110. When the cable 200 is inserted into the traction drum 110, the semi-solid glue layer will wrap the outer peripheral wall of the cable 200, thereby forming an annular tensile glue layer 120. When the cable traction joint 100 needs to be installed on the cable 200, the cable traction joint 100 and the cable 200 are connected and fixed by the annular tensile glue layer 120, so that the cables 200 of different materials can be firmly connected to the traction drum 110 of the cable traction joint 100 to prevent slipping, and also have strong tensile resistance. In addition, by connecting the cable 200 and the traction drum 110 through the annular tensile glue layer 120, the cable 200 and the traction drum 110 can be tightly connected to the cable traction joint 100, so that the cable traction joint 100 has waterproof sealing ability.

[0040] In order to make the cable 200 and the cable traction joint 100 fixedly connected and at the same time make the cable traction joint 100 have good tensile strength, the annular tensile glue layer 120 in this embodiment is made of steel rope resin. According to the tensile strength required for the specific installation position of the cable 200, steel rope resin materials with different tensile properties are selected. The steel rope resin includes liquid resin and solid powder. After the steel rope resin is poured into the inner cavity of the outer cylinder 112, it will solidify and become a state similar to reinforced cement. After contacting with the cable 200, it has a strong bonding force with the cable 200, so that the cable 200 and the cable traction joint 100 can be tightly connected. In addition, other materials with strong tensile resistance and certain adhesion can also be poured into the inner cavity of the outer cylinder 112 to connect the cable 200 and the cable traction joint 100, which is not limited here.

[0041] In order to make the steel rope resin and the cable 200 more adherent and effectively prevent the cable 200 from slipping under traction, the inner wall of the outer cylinder 112 in this embodiment is tapered, the smaller end of the inner wall of the outer cylinder 112 is an open end 1122, and the larger end of the inner wall of the outer cylinder 112 is a closed end 1121. The design of the tapered cavity can make the steel rope resin and the outer peripheral wall of the cable 200 strongly adhered, and form a block support in the cone, which can effectively support the annular glue layer, thereby effectively preventing the situation of slipping under traction.

[0042] In order to make the cable 200 and the outer cylinder 112 tightly connected and facilitate the connection between the cable pulling connector 100 and the cable 200, the inner wall of the outer cylinder 112 in this embodiment is provided with an internal thread, the sheath of the cable 200 is provided with an external thread, and the outer cylinder 112 is connected to the cable 200 through a threaded connection. Of course, fasteners such as screws can also be used for connection, which is not limited here.

[0043] To facilitate the processing and connection assembly of the cable pulling connector 100, please refer to Figure 3 The traction cylinder 110 in this embodiment includes an outer cylinder 112 and a bushing 111, one end of the outer cylinder 112 is a closed end 1121, and the other end of the outer cylinder 112 is an open end 1122; the bushing 111 is located in the outer cylinder 112 and is connected to the outer cylinder 112. The outer wall of the annular tensile glue layer 120 is connected to the inner wall of the bushing 111, and the inner wall of the annular tensile glue layer 120 is used to connect to the outer peripheral wall of the cable 200. In this embodiment, mounting holes are provided on the outer cylinder 112 and the bushing 111, and the outer cylinder 112 and the bushing 111 are connected by set screws. In order not to affect the normal use and aesthetics of the cable traction joint 100, the set screws in this embodiment do not expose the surface of the outer cylinder 112. In addition, other fasteners can also be used to achieve the connection and fixation of the outer cylinder 112 and the bushing 111, which is not limited here.

[0044] Please continue reading Figure 3 In order to make the annular tensile adhesive layer 120 and the cable 200 more adhesive and effectively prevent the cable 200 from slipping under traction, the bushing 111 in this embodiment is a conical bushing, and the bushing 111 includes a large end 1111 and a small end 1112, the large end 1111 is close to the ear plate 150, and the small end 1112 is close to the opening end 1122. The cable 200 is inserted into the traction cylinder 110 from the small end 1112 of the bushing 111, and the cable 200 is connected with the bushing 111 through the annular tensile adhesive layer 120.

[0045] In order to make the cable 200 tightly connected with the outer cylinder 112 and facilitate the connection between the cable traction connector 100 and the cable 200, the inner wall of the bushing 111 in this embodiment is provided with an internal thread, and the internal thread is used to cooperate with the external thread on the sheath of the cable 200. The cable 200 includes a sheath and a cable core, the sheath wraps the cable core, and the outer wall of the sheath is provided with an external thread, and the external thread on the sheath cooperates with the internal thread of the bushing 111 to achieve the initial connection between the cable 200 and the cable traction connector 100. Then, the cable 200 and the cable traction connector 100 can be tightly connected through the annular tensile glue layer 120, thereby preventing the cable 200 from slipping out of the cable traction connector 100, and also achieving the waterproof sealing effect of the cable traction connector 100 on the cable 200, preventing the cable 200 from contacting with water and affecting the subsequent use of the cable 200.

[0046] To enhance the waterproof sealing performance of the cable pulling connector 100, refer to Figure 3 and Figure 4 , Figure 4 This is a schematic diagram of the BB section provided in an embodiment of the utility model. The cable traction joint 100 in this embodiment also includes a sealing cover plate 130, which is located in the outer cylinder 112 and close to the closed end 1121. The sealing cover plate 130 is connected to the bushing 111. The cable traction joint 100 also includes a sealing ring 140, which is located between the sealing cover plate 130 and the bushing 111. Specifically, in this embodiment, a plurality of bolts 131 are distributed at intervals around the periphery of the sealing cover plate 130, and the sealing cover plate 130 is connected to the bushing 111 through a plurality of bolts 131. Of course, the connection between the sealing cover plate 130 and the bushing 111 can also be achieved by other fasteners such as screws, which is not limited here.

[0047] According to a cable pulling joint 100 provided in this embodiment, its working principle is as follows:

[0048] Pour tensile glue into the traction drum 110, and insert the cable 200 into the traction drum 110 from the open end 1122 of the traction drum 110. After the cable 200 is inserted, the tensile glue forms an annular tensile glue layer 120, which connects and fixes the cable 200 to the traction drum 110, and makes it waterproof and sealed. Then, the traction drum 110 is connected to the traction end of the traction equipment through the ear plate 150, so that the traction equipment can pull the cable 200.

[0049] In summary, the cable traction joint 100 includes an ear plate 150, a traction cylinder 110 and an annular tensile glue layer 120, wherein the ear plate 150 is used to connect with the traction equipment; one end of the traction cylinder 110 is a closed end 1121, and the other end of the traction cylinder 110 is an open end 1122, wherein the closed end 1121 is connected to the ear plate 150, and the open end 1122 is used to cover the cable 200; the outer wall of the annular tensile glue layer 120 is connected to the inner wall of the traction cylinder 110, and the inner wall of the annular tensile glue layer 120 is used to connect with the outer peripheral wall of the cable 200. The annular tensile glue layer 120 is formed by pouring tensile glue into the traction cylinder 110 from the open end 1122 of the traction cylinder 110, and the tensile glue forms a semi-solid glue layer in the traction cylinder 110. When the cable 200 is inserted into the traction drum 110, the semi-solid glue layer will wrap the outer peripheral wall of the cable 200, thereby forming an annular tensile glue layer 120. When the cable traction joint 100 needs to be installed on the cable 200, the cable traction joint 100 is connected and fixed to the cable 200 through the annular tensile glue layer 120, so that the cable 200 and the traction drum 110 of the cable traction joint 100 can be firmly connected to prevent slipping, and also have strong tensile resistance. In addition, by connecting the cable 200 and the traction drum 110 through the annular tensile glue layer 120, the cable 200 and the traction drum 110 of different materials can be tightly connected to the cable traction joint 100, so that the cable traction joint 100 has waterproof sealing ability.

[0050] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A cable pulling joint, characterized in that: include: An ear plate (150), wherein the ear plate (150) is used to connect with a traction device; A traction cylinder (110), one end of the traction cylinder (110) is a closed end (1121), the other end of the traction cylinder (110) is an open end (1122), the closed end (1121) is connected to the ear plate (150), and the open end (1122) is used to fit the cable (200); An annular tensile adhesive layer (120), the outer wall of the annular tensile adhesive layer (120) is connected to the inner wall of the traction cylinder (110), and the inner wall of the annular tensile adhesive layer (120) is used to be connected to the outer peripheral wall of the cable (200).

2. The cable pulling joint according to claim 1, characterized in that: The traction cylinder (110) comprises an outer cylinder (112) and a bushing (111); one end of the outer cylinder (112) is the closed end (1121), and the other end of the outer cylinder (112) is the open end (1122); the bushing (111) is located inside the outer cylinder (112) and is connected to the outer cylinder (112); the outer wall of the annular tensile adhesive layer (120) is connected to the inner wall of the bushing (111).

3. The cable pulling joint according to claim 2, characterized in that: The bushing (111) is a conical bushing, and the bushing (111) comprises a large end (1111) and a small end (1112), wherein the large end (1111) is close to the ear plate (150), and the small end (1112) is close to the opening end (1122).

4. The cable pulling joint according to claim 2, characterized in that: The inner wall of the bushing (111) is provided with an internal thread, and the internal thread is used to cooperate with the external thread on the sheath of the cable (200) for connection.

5. The cable pulling joint according to claim 2, characterized in that: The cable traction joint (100) further comprises a sealing cover plate (130), wherein the sealing cover plate (130) is located inside the outer cylinder (112) and close to the closed end (1121), and the sealing cover plate (130) is connected to the bushing (111).

6. The cable pulling joint according to claim 5, characterized in that: The cable traction joint (100) further comprises a sealing ring (140), wherein the sealing ring (140) is located between the sealing cover plate (130) and the bushing (111).

7. The cable pulling joint according to claim 5, characterized in that: A plurality of bolts (131) are distributed at intervals around the periphery of the sealing cover plate (130), and the sealing cover plate (130) is connected to the bushing (111) via the plurality of bolts (131).

8. The cable pulling joint according to claim 1, characterized in that: The annular tensile-resistant glue layer (120) is made of steel rope resin.

9. A cable assembly, characterized in that: It comprises a cable (200) and a cable traction joint (100) as claimed in any one of claims 1 to 8, wherein the cable (200) is connected to the open end (1122) of the traction cylinder (110), and the cable (200) is connected and fixed to the traction cylinder (110) via the annular tensile adhesive layer (120).

10. A cable pulling system, characterized in that: It comprises a traction device and a cable traction joint (100) according to any one of claims 1 to 8, wherein the traction end of the traction device is connected to the ear plate (150) and is used to pull the cable (200) through the cable traction joint (100).

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