WO2019100225A1

WO2019100225A1 - Cable gripping apparatus

Info

Publication number: WO2019100225A1
Application number: PCT/CN2017/112244
Authority: WO
Inventors: 周大宁
Original assignee: 青岛朔方国际贸易有限公司
Priority date: 2017-11-22
Filing date: 2017-11-22
Publication date: 2019-05-31

Abstract

A cable gripping apparatus, belonging to the field of cable fixing. The gripping apparatus comprises a wire grip head (1), a gripping jaw (2) and a housing (3); a first channel (11) is provided inside the wire grip head (1), a tapered surface (12) being provided in the first channel; the wire grip head (1) has a first outer surface (13), on which a first external threaded surface (14) is provided; the gripping jaw (2) comprises a first gripping jaw (21) and a second gripping jaw (22), and the two can combine with each other as a conical body; a second channel (23) which can accommodate a cable is provided inside the gripping jaw (2); a first cavity (31) is provided inside the housing (3), the first cavity (31) has therein a first inner threaded surface (33), and the wire grip head (1) matches the housing (3) by means of the first outer threaded surface (14) and the first inner threaded surface (33), so that the wire grip head (1) can move within the housing (3).

Description

Cable clamping device

Technical field

The present application relates to a cable clamping device and belongs to the field of cable fixing.

Background technique

Wire rope guardrails are mainly used for highways, railways and protective belts on both sides of bridges; security protection for airports, ports and terminals; road safety protection for highways, mountains and tourist attractions. When the wire rope guardrail is installed, the degree of tension of the wire rope is required to be high, so that the guardrail can be stably stabilized.

In order to achieve the stability of the guardrail, a cable clamping device is often used. The clamping device in the prior art is mostly a single tubular structure. When fixing, the wire rope is first inserted into the device, and then the hydraulic crimping tool is used to extrude the product, and the clamping device is directly deformed as a whole, and then the fastening wire rope is realized. Since most of the end customers do not have hydraulic crimping tools, and the hydraulic crimping tools are bulky and heavy in weight, they are inconvenient to carry and use. At the same time, in such an operating environment, the wire rope needs to be cut into a fixed length according to the design in advance, and after being fastened with the wire puller, the length cannot be changed again. If the length of the construction site changes, the fastened combination product can only be discarded.

US7043801B2 and its co-proprietary CN100455845C, which provide a spring-loaded and self-locking cable gripping device comprising a housing having a portion of a tapered passage, two serrated half jaws, a spacer, a spring, a retaining clip and cover. The device is spring loaded and self-locking for clamping and securing the cable. The serrated half jaws and springs lock the cable in place, allowing only the cable to move in one direction.

Summary of the invention

The purpose of the application is to provide a cable clamping device which can be used for clamping cables and has a simpler structure. Single and smaller.

A first embodiment of the present application provides a cable clamping device including a cable puller head, a clamping jaw and an outer casing;

The inside of the wire puller head has a first passage having a tapered surface therein; the puller head further has a first outer surface, and the first outer surface is provided with a first external thread surface.

The jaw includes a first jaw and a second jaw, the two of which can cooperate with each other to form a cone having a second passage therein for receiving a cable; when the jaw approaches the tapered surface, The volume of the two channels becomes smaller.

The interior of the outer casing has a first cavity, the first end of the outer casing being open to receive the wire puller head and the jaws within the first cavity. The first cavity has a first internal thread surface, and the wire connector head and the outer casing are matched by the first external thread surface and the first internal thread surface, so that the wire puller head can move within the outer casing.

On the basis of the first embodiment, the cable clamping device provided by the second embodiment of the present application further includes the following technical features:

The first section of the first passage of the wire puller head is a tapered surface, and the second section of the first passage is a second internal thread surface;

The cable gripping device further includes a push block having an outer surface having a second externally threaded surface, the second externally threaded surface being engageable with a second internally threaded surface of the puller head.

On the basis of the first embodiment and the second embodiment, the cable clamping device provided by the third embodiment of the present application further includes the following technical feature: the second end of the outer casing is provided with a hole for The power source enters the first cavity to push the push block 4 to move.

The beneficial effects of the application:

(1) This application only needs to insert a cable such as a wire rope into the jaws, and then use external force and use the device. The taper structure squeezes the jaws to compress the cable. Compared with the spring tensioning in the prior art, the present application directly adjusts the jaws by a controllable external force, which can make the grasping force more proper and the stability of the grasping is better.

(2) The present invention can further advance the cable into the outer casing by adjusting the relative position of the wire puller head and the outer casing while grasping the cable, thereby making the cable pulled tighter and the adjustability is high.

(3) The cable clamping device provided by the present application can fasten and tighten the wire rope quickly and conveniently without the hydraulic crimping tool pressing the outer casing. At the same time, the present application can flexibly adjust the length of the cable according to the construction site, disassemble the clamped device that has been assembled and fastened, and change the length of the cable to achieve re-installation.

DRAWINGS

Figure 1 is an exploded view of the cable gripping device of the first embodiment;

Figure 2 is a cross-sectional view of Figure 1;

Figure 3 is an assembly view of the cable clamping device 1;

Figure 4 is an assembly view of the cable clamping device 2;

Figure 5 is an assembly view of the cable clamping device 3;

Figure 6 is an exploded view of the cable gripping device of the second embodiment;

Figure 7 is a cross-sectional view of Figure 6;

Figure 8 is a partial structural view of the cable clamping device;

Figure 9 is a deformation diagram of the push block;

Figure 10 is a combination diagram of a push block and a cushion;

Figure 11 is a power source diagram;

Figure 12 is a schematic view of the operation of the cable clamping device 1;

Figure 13 is a schematic view of the operation of the cable clamping device 2;

Figure 14 is an overall view of one form of a cable gripping device;

1 puller head, 11 first passage, 12 tapered surface, 13 first outer surface, 14 first external thread surface, 15 second internal thread surface, 2 jaws, 21 first jaw, 22 second jaw 23 second channel, 24 internal teeth, 3 outer casing, 31 first cavity, 32 first end, 33 first internal thread surface, 34 second end, 35 holes, 36 flange, 4 push block, 41 second External thread surface, 42 second cavity, 43 blind hole, 44 cushion, 5 power source, 51 pusher, 52 hand, 6 cable.

Detailed ways

The technical solutions of the present application are described in detail below with reference to the specific embodiments, but it should be understood that the elements, structures, and features of one embodiment may be beneficially incorporated into other embodiments without further recitation.

In the description of the present application, it should be noted that the terms "first", "second" and the like are used for descriptive purposes only, and are not to be construed as indicating or implying relative importance; "inside" or "outside" are relative In the direction of the figure, not an absolute limit on its position. The embodiments described are merely illustrative of the preferred embodiments of the present application, and are not intended to limit the scope of the present application, and various modifications made by those skilled in the art to the technical solutions of the present application without departing from the spirit of the present application. And improvements are intended to fall within the scope of protection defined by the claims of the present application.

A first embodiment of the present application provides a cable gripping device, as shown in Figures 1-5, including a cord puller head 1, a jaw 2 and a housing 3.

The inside of the wire puller head 1 has a first passage 11 having a tapered surface 12 therein; the puller head 1 further has a first outer surface 13 on which the first outer surface 13 is disposed There is a first external thread surface 14.

The clamping jaw 2 includes a first clamping jaw 21 and a second clamping jaw 22, which can cooperate with each other to form a cone. The jaw 2 has a second passage 23 therein for receiving a cable. The jaws 2 are located in the first passage 11 when the cable is grasped. When the jaw 2 approaches the tapered surface 12 of the wire puller head 1, the distance between the first jaw 21 and the second jaw 22 is reduced, so that the volume of the second passage 23 becomes small, and the cable can be grasped.

As a preferred embodiment, the inner surface of the second passage 23 has internal teeth 24. The internal teeth 24 may be in the shape of a thread or a zigzag shape in order to increase the friction and better grasp the cable.

The inside of the outer casing 3 has a first cavity 31, the first end 32 of which is open to accommodate the wire puller head 1 and the jaws 2 within the first cavity 31. The first cavity 31 has a first internal thread surface 33 therein, and the first external thread surface 14 and the first internal thread surface 33 are matched between the wire puller head 1 and the outer casing 3, so that the wire puller head 1 can be Movement within the outer casing 3.

As a preferred embodiment, the second end 34 of the outer casing 3 is provided with a flange 36. For example, when the clamping device needs to be mounted on the railing, the outer casing 3 extends from the first end of the mounting hole formed in the rail to the second end of the mounting hole for the second end 34 of the outer casing Retaining at the first end of the railing mounting hole, the first end 32 of the housing passes through the mounting hole to the second end of the mounting hole, and the clamping operation of the cable is performed at the second end of the mounting hole.

The installation procedure of the first embodiment can be referred to FIG. 3-5 to install a conventional railing cable (wire rope) as an illustrative example, but the scope of protection of the present application is not limited thereto:

(1) Mounting the outer casing 3 on the first rail, the cable 6 having a first end (free end) and a second end (fixed end) fixed to the adjacent second rail; the first end of the cable 6 The distance between the second ends of the cables may be slightly less than the distance between the two railings;

(2) As shown in Fig. 3, the first end (free end) of the cable 6 extends from the left side into the first passage 11 of the puller head 1, and then enters the jaw 2 in a relaxed state;

(3) When the cable 6 enters the jaw 2 sufficiently deep, the clip is pushed into the tapered surface 12 of the first passage 11. The claw 2 is such that the volume of the second passage 23 of the jaw 2 is reduced, and the cable 6 is grasped more and more, thereby fixing the cable 6 to the wire puller head 1, as shown in FIG. 4;

(4) After the cable 6 is clamped by the wire puller head 1, the first external thread surface 14 of the wire puller head 1 is matched with the first female screw surface 33 of the outer casing 3, and the wire puller head 1 is screwed into the outer casing 3. Inside the first cavity 31; the cable 6 is gradually tightened between the two rails, as shown in FIG.

In the step (3), pushing the jaw 2 into the tapered surface 12 can be realized by any power source that can play a pushing role, such as a screwdriver, a wrench, etc.; since the pushing process can be externally forceed, and the external force is The source, type, and force are all controllable, so that the jaw 2 can be fixed in the puller head 1 very firmly.

In the step (4), in order to prevent the cable 6 from being deformed by rotation, it is preferable to keep the cable 6 and the wire puller head 1 from rotating, and to rotate the outer casing 3 so that the wire puller head 1 passively enters into the outer casing 3.

The cable clamping device provided by the second embodiment of the present application, as shown in FIG. 6-8, is based on the first embodiment; that is, the technical solution of the first embodiment is also feasible in the present embodiment. , will not repeat them here; it also includes the following technical features:

As shown in Figure 7, the first section of the first channel 11 of the wire puller 1 is a tapered surface 12, the second section of the first channel 11 is a second internal thread surface 15;

The cable clamping device further includes a push block 4, the outer surface of the push block 4 having a second external thread surface 41, and the second external thread surface 41 and the second internal thread surface 15 of the wire puller head 1 Match. The push block 4 is movable back and forth in the first passage 11 by the cooperation of the two thread faces. The push block 4 has a second cavity 42 therein.

The jaw 2 is situated between the first section of the first channel 11 and the push block 4.

In the above structure, when the clamping device grips the cable, the jaws 2 are all located in the first passage 11; as a preferred embodiment, all or part of the pusher block 4 is located in the first passage 11.

As a preferred embodiment, the second cavity 42 may be a passage through the push block 4, as shown in FIG. 6-8; or a blind hole 43 opening at an end away from the jaw 2, as shown in the figure. 9 shows that the viewing direction of the left side view of FIG. 9 substantially coincides with the viewing direction of FIG.

As a preferred embodiment, as shown in FIG. 10, the push block 4 is provided with a cushion 44 near one end of the jaw 2, and the cushion 44 has elasticity, and the material thereof is rubber or plastic, etc. The force of the block 4 when pushing the jaws 2 reduces the damage to the jaws 2.

As a preferred embodiment, the second cavity 42 is a polygon, and conventionally, a triangle, a rectangle, a pentagon, a hexagon, or the like may be selected; as shown in FIG. 6 and FIG. One way.

As a preferred embodiment, the cable clamping device further includes a power source 5 for driving the push block 3 during installation or removal of the cable.

As a preferred embodiment, the power source 5 can select a corresponding polygonal wrench according to the shape of the second cavity 32 of the push block 4; the wrench includes a pushing portion 51 and a hand portion 52, and the pushing portion 51 Having a shape that matches the second cavity 42 of the push block 4, it may be preferable that the push portion 51 is a rod. Figure 11 shows several conventional wrenches, from left to right, hexagonal wrenches, pentagonal wrenches, rectangular wrenches and triangular wrenches; for example, for the inner hexagonal push block 4 in Figure 6, the most The hexagonal wrench on the left is screwed in or out of the push block 4.

Compared with the first embodiment, the embodiment has the same or similar installation procedure; by adding the push block 4 and the power source 5 for giving the push block 4 power, the push block 4 can be screwed in or unscrewed in the puller head 1 After assembly, the push block 4 can be fixed in the wire puller head 1 to effectively prevent the jaws 2 from being tapered Escape from face 12. At the same time, since the size of the push block 4 can be adjusted according to actual needs, in the actual processing and production, especially when used for the guardrail wire rope clamping, the entire clamping device can be made very small, and on the one hand, the consumables are saved. On the other hand, due to the small size, the guardrail wire rope is more beautiful.

The cable clamping device provided by the third embodiment of the present application is as shown in FIGS. 12-14 on the basis of the structure of the second embodiment; that is, the technologies of the first embodiment and the second embodiment The solution is also feasible in the present embodiment, but the assembly steps and working modes are slightly different), and the following technical features are also included:

The second end 34 of the outer casing 3 defines a hole 35 for the power source 5 to enter the first cavity 31 to push the push block 4 to move.

As a preferred embodiment, the diameter of the hole 35 may be smaller than the diameter of the push block 4 to prevent the push block 4 from falling out of the hole 35; the diameter of the hole 35 is greater than or equal to the pushing portion 51 of the power source 5. The diameter, in this way, the power source 5 can enter the first cavity 31 to push or pull back the push block 4.

As a preferred embodiment, the first end of the wire puller head 1 is located outside the first end 32 of the outer casing 3, and the second end of the wire puller head 1 is located in the first cavity 31, as shown in FIG. . With this structure, after the preliminary fixing of the cable is completed in the wire puller head 1, the wire puller head 1 can be further screwed into the outer casing 4, thereby further tightening the cable 6; at the same time, the first cavity 31 can be secured. There is enough room for screwing in.

For the installation process of the third embodiment, reference may be made to FIG. 12 and FIG. 13; similarly, the conventional railing cable is installed as an example, but the scope of protection of the present application is not limited thereto:

(1) Mounting the outer casing 3 on the first rail, the cable 6 having a first end (free end) and a second end (fixed end) fixed to the adjacent second rail; the first end of the cable 6 The distance between the second end of the cable can be Slightly smaller than the distance between the two railings.

(2) Before the cable 6 enters the wire pulling head 1 from the left side, the clamping jaw 2 is first placed in the wire puller head 1, and then the push block 4 is screwed on the second female thread surface 15; then the wire puller head 1 is Partially screwed into the outer casing 4; as shown in Figures 8 and 12 (the outer casing 3 is not included in Figure 8 for ease of viewing).

(3) The push portion 51 (not shown in FIGS. 12-13) of the power source 5 is introduced into the first cavity 31 of the outer casing 3 through the hole 35, and the push block 4 is oriented along the second end 34 of the outer casing 3. Unscrewed so that the jaw 2 can expand in the first passage 11 of the cord head 1;

Alternatively, under the condition of the step (2), the push block 4 is screwed into the first passage 11 and not deep, and the jaw 2 can also be expanded in the first passage 11 of the puller head 1.

(4) Inserting the cable 6 into the first passage 11, the cable 6 pushing the first jaw 21 and the second jaw 22 inwardly so that the volume of the second passage 23 between the two increases, and then the cable 6 It begins to enter between the second channels 23, as shown in FIG.

(5) When the cable 6 enters the jaw 2 sufficiently deep, the power source 5 is used to push the push block 4 into the first passage 11 in the direction of the first end 32 of the outer casing 3, thereby causing the jaw 2 to pull the puller The inside of the tapered surface 12 of the head 1 is moved such that the volume of the second passage 23 is reduced, and the cable 6 is more grasped, thereby fixing the cable 6 in the holding device as shown in FIG.

(6) After the cable 6 is clamped, since the first external thread surface 14 of the wire puller head 1 and the first female screw surface 33 of the outer casing 3 have been matched in the step (2), the wire puller head 1 is further rotated. It enters the first cavity 31 of the outer casing 3 such that the cable 6 is gradually tightened between the two railings. Preferably, the wire puller head 1 does not rotate, but rotates the outer casing 3 such that the wire puller head 1 passively enters the outer casing 3.

Claims

A cable clamping device, comprising: a wire puller head (1), a clamping jaw (2) and a casing (3);

The inside of the wire puller head (1) has a first passage (11), the first passage (11) has a tapered surface (12); the puller head (1) also has a first outer surface ( 13), the first outer surface (13) is provided with a first external thread surface (14);

The jaw (2) includes a first jaw (21) and a second jaw (22), which can cooperate with each other as a cone; the jaw (2) has a second passage for receiving a cable therein (23); when the jaw (2) approaches the tapered surface (12), the volume of the second passage (23) becomes smaller;

The inside of the outer casing (3) has a first cavity (31), and the first end (32) of the outer casing (3) is opened to accommodate the wire puller head (1) and the jaw (2) in the first Inside the cavity (31); the first cavity (31) has a first internal thread surface (33), and the first external thread surface (14) is passed between the wire puller head (1) and the outer casing (3) ) mating with the first internally threaded surface (33) such that the puller head (1) is movable within the outer casing (3).
The cable gripping device according to claim 1, characterized in that the inner surface of the second passage (23) has internal teeth (24).
A cable gripping device according to claim 1, characterized in that the second end (34) of the outer casing (3) is provided with a flange (36).
A cable clamping device according to any one of claims 1-3, wherein the first section of the first passage (11) of the cable gripper (1) is a tapered surface (12), The second section of the first passage (11) is a second internal thread surface (15); the cable clamping device further comprises a push block (4), the outer surface of the push block (4) having a second external thread a second outer thread surface (41) matching the second internal thread surface (15) of the wire puller head (1); the push block (4) having a second cavity (42) .
The cable clamping device according to claim 4, wherein when the cable is grasped, the clip is clamped The claws (2) are all located in the first passage (11), and all or part of the push block (4) is located in the first passage (11).
The cable clamping device according to claim 4, wherein the second cavity (42) is a passage through the push block (4) or is blind at an end remote from the jaw (2) a hole (43); the second cavity (42) is a polygon.
A cable gripping device according to claim 6, characterized in that, in the installation or removal of the cable, a power source (5) is also included, said power source (5) for urging the push block (4) to move.
The cable clamping device according to claim 7, wherein the power source (5) selects a corresponding polygonal wrench according to the shape of the second cavity (32) of the push block (4); the wrench A push portion (51) and a hand portion (52) are provided, the push portion (51) having a shape that matches the second cavity (42) of the push block (4).
The cable clamping device according to claim 7, wherein the second end (34) of the outer casing (3) defines a hole (35) for the power source (5) to enter the first cavity (31). ), pushing the push block (4) movement.
The cable clamping device according to claim 4, characterized in that the first end of the wire puller head (1) is located outside the first end (32) of the outer casing (3), and the wire puller head (1) The second end is located in the first cavity (31).