CN104734105B - Cable mouth of pipe sheath device - Google Patents

Abstract

The invention discloses a sheathing device for a cable nozzle, which includes a handle (10) and several roller assemblies, the roller assembly includes a roller base (6), and rollers and roller shafts (7) arranged between adjacent roller bases. The movable link of the above-mentioned roller assembly forms a ring-shaped whole with an open end, and the sheath flat steel (3) that can be supported on the cable protection tube (8) is respectively provided between the roller bases and the open end of the ring-shaped whole. An adjusting bolt angle steel (1) is fixedly arranged on the sheath flat steel, and the handle (10) is fixed on the adjusting bolt angle steel. It is not only simple in structure, easy to disassemble and install, but also can make the cable change from sliding friction to rolling friction at the outlet of the cable protection tube during the traction process, reduce traction resistance, make the traction process smoother, and isolate the cable at the exit of the cable protection tube from the cable. The direct contact of the steel pipe avoids damage to the cable when the cable passes through the pipe; it can be used for different cable traction by increasing or decreasing the roller assembly.

Description

Cable nozzle sheath device

technical field

The invention relates to a cable protection device, in particular to a cable duct opening sheath device installed at the cable duct opening.

Background technique

At present, for the purpose of urban construction and urban beautification, the erection of power lines has gradually changed from overhead lines to cables into the ground. During the traction process of the cable into the ground, the cable sheath (rubber protective insulation layer) is likely to rub against the water chestnut or burr on the outer wall of the pipe mouth at the cable nozzle, resulting in damage to the rubber and plastic sheath, and may cause cable insulation in severe cases. The damage of the layer will affect the normal operation of the cable and even cause electric shock accidents. When the nozzle of the cable tube is not handled properly, it will cause damage to the protective insulation layer of the cable. During the direct burial laying of this type of cable, it is easy to be damp and cause intermittent short-circuits until it is blown out. Such faults often cause multiple cables to burn at the same time. Bad; there is a safety hazard. The existing technology is to expand the mouth of the protective pipe (cable pipe) into a bell mouth to reduce the chance of friction, but the production process requires welding and stretching, which is not efficient during installation and affects the construction progress.

Contents of the invention

In view of the above-mentioned problems existing in the cable nozzle protective sleeve in the prior art, the present invention provides a practical cable nozzle sheath device that is easy to disassemble, has higher safety, and is applicable to different pipe diameters.

The technical solution adopted for the technical problem to be solved by the present invention is: the cable nozzle sheathing device includes a handle and several roller assemblies, and the roller assembly includes a roller base and a roller and a roller shaft arranged between the roller bases , the roller assembly is movably linked to form a ring-shaped whole with an open end, and sheath flat steel that can be supported on the cable protection tube is respectively arranged between the roller bases and the open end of the ring-shaped whole, and the sheath flat steel at the open end of the ring-shaped whole An adjusting bolt angle steel is fixedly arranged on the steel, and the handle is fixed on the adjusting bolt angle steel.

Further, the several roller assemblies are movably linked through joints and butterfly bolts.

Further, support legs are symmetrically provided at the lower end of the annular body formed by the several roller assemblies.

Beneficial effects of the present invention: 1. The structure is simple, the manufacturing cost is low, and it can be used repeatedly; 2. The cable can change from sliding friction to rolling friction at the outlet of the cable protection tube during the traction process, greatly reducing the traction resistance and making the traction process more efficient. For smoothness, the direct contact between the cable and the cable steel pipe at the exit of the cable protection tube is isolated to avoid damage to the cable when the cable passes through the tube; 3. By increasing or decreasing the roller assembly, it can be applied to different cable sections and protection tube diameters; 4. It is easy to disassemble and install.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the present invention,

Fig. 2 is a schematic cross-sectional structural diagram of A-A in Fig. 1 in the present invention.

In the figure, 1. Adjusting bolt angle steel 2, adjusting bolt 3, sheath flat steel 4, joint 5, butterfly bolt 6, roller base 7, roller and roller shaft 8, cable protection tube 9, cable 10, handle 11 , Supporting legs.

detailed description

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific implementations according to the accompanying drawings.

As shown in Fig. 1 and Fig. 2, the cable nozzle sheathing device is placed on the cable protection tube when in use, and it includes a handle 10, a number of roller assemblies (five in the figure, but also many other) 1), the roller assembly includes a roller base 6 and a roller and a roller shaft 7 arranged between adjacent roller bases, the five roller assemblies are movably linked from head to tail to form a ring-shaped whole with an open end, and the ring-shaped whole is located in the cable protection tube In the vicinity of the opening, between the roller bases and on the ring-shaped integral opening end are respectively provided with sheath flat steel 3 that can be supported on the cable protection tube 8, and one end of the roller base protrudes out of the cable protection tube mouth and connects The two ends of the roller shaft are connected, the sheathed flat steel passes through the roller base, and the sheathed flat steel is connected with a joint 4 and a butterfly bolt 5 (equivalent to a loose leaf). The outer surface of the roller extends into the cable protection tube and connects with the cable. 9 The outer surfaces are in contact, so that the cable moves under the support of the roller surface, thereby preventing friction between the cable and the cable protection nozzle. According to the size of the cable, in order to make the outer surface of the roller contact with the cable surface, multiple roller components can be linked to form The ring-shaped whole is fixed with an adjusting bolt angle steel 1 on the sheath flat steel at the opening end of the ring-shaped whole. The adjusting bolt angle steel is in an "L" shape with unequal sides, and the handle 10 is fixed on the adjusting bolt angle steel.

The several roller assemblies are movably linked through the joint 4 and the butterfly bolt 5, that is, the joint is fixedly connected with the side of the sheath flat steel, and after the joint is staggered with each other, it is connected to a screw rod with a butterfly at one end to form a ring-shaped whole. After the screw is loosened, a roller assembly can be installed between the roller assemblies to suit the traction of different cables. Of course, other movable link methods can also be used to link the roller assemblies (such as ferrules that can be embedded in each other, hooks, etc.) , it is specifically set that the upper end of the sheath flat steel supporting the adjacent roller base is a joint, and the lower end is two joints, and then connected by butterfly bolts (not limited to this form, other equivalent transformation forms can also be used) , which is easy to assemble and disassemble, and can be adjusted at any time according to the cable model.

Further, the handle is in an inverted "U" shape, which is more convenient for operators to use.

Further, support legs 11 are symmetrically provided at the lower end of the ring-shaped whole formed by the several roller assemblies.

Wrap the sheath device on the outside of the cable protection tube 8 through the handle, and fix the cable nozzle sheath device on the outer wall of the cable protection tube mouth with the adjusting bolt 2 . Tighten the adjusting bolt, the sheath flat steel can be shrunk and clamped on the cable protection tube, and the adjusting bolt can be loosened, so that the sheath flat steel cable protection tube can be taken out, and the space formed by the roller assembly and the adjusting bolt assembly is larger than the cable 9 The outer diameter, but smaller than the inner diameter of the protective tube, slides on the rollers during the cable traction, so as to prevent the cable from being damaged due to friction between the cable and the cable protective tube. In addition, by increasing or reducing the number of roller assemblies, different protection pipe diameters can be adapted to, and the roller assemblies of the present invention are arranged in a ring shape, no matter which direction the cable is turned to when pulling the cable, the force will be on the rollers, and there will be no If the cable is damaged, it is safer, more reliable and more protective than the existing trumpet-shaped protection port and temporary single-wheel pay-off block.

The above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to specific embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solutions of the present invention, all of them shall be included in the protection scope of the claims of the present invention.

Claims (1)

1. Cable nozzle sheathing device, characterized in that it includes a handle (10) and several roller assemblies, the roller assembly includes a roller base (6) and rollers and roller shafts (7) arranged between the roller bases , the roller assembly is movably linked to form a ring-shaped whole with an open end, and the sheath flat steel (3) that can be supported on the cable protection tube (8) is respectively provided between the roller bases and the open end of the ring-shaped whole. An adjusting bolt angle steel (1) is fixedly arranged on the sheath flat steel at the overall opening end, the handle (10) is fixed on the adjusting bolt angle steel, and the roller assembly is movable through the joint (4) and the butterfly bolt (5). link, the lower end of the annular body formed by the several roller assemblies is symmetrically provided with support legs (11).