CN204947530U - A kind of strain clamp - Google Patents

Abstract

The utility model discloses a tension clamp which comprises a wedge-shaped housing, the wedge-shaped housing includes a wedge-shaped base plate, and L-shaped side plates arranged on both sides of the wedge-shaped base plate. And a cavity is formed between the wedge-shaped base plate and the two L-shaped side plates. The cavity is provided with a first wire splint and a second wire splint opposite to each other, and the first wire splint and the second wire splint are both slidably arranged with the wedge-shaped housing. Moreover, the wedge-shaped housing of the utility model is provided with a fastening structure, and the fastening structure fastens the first wire splint and the wedge-shaped housing, and also fastens the second wire splint and the wedge-shaped housing. The fastening structure can tightly press the splint against the inner wall of the wedge-shaped housing, so when the tension clamp of the utility model is used, it can resist natural wind and prevent the first splint and the second wire When the splint is pulled out from the cavity, the power line held by it is prevented from being pulled out, thereby avoiding the short circuit between the power lines due to wind blowing, and ensuring the safety of power transmission.

Description

A strain-resistant clamp

technical field

The utility model relates to the technical field of power line transmission appliances, in particular to a tension clamp.

Background technique

The tension clamp is a device used to fix the cable to bear the tension of the cable and hang the cable on the tension string or tower. According to different structures and installation conditions, tension clamps can be divided into two categories: the first type of tension clamps must bear all the tension of the conductors, lightning conductors and pull wires, and the gripping force of the clamps should not be less than the rated 90% tensile strength, but not as a conductor. These clamps include bolt-type strain clamps and wedge-shaped strain clamps. The feature of this type of clamp is that it can be removed after the wire is installed and used separately; the second type of strain clamp not only bears all the tension of the wire and the lightning conductor, but also serves as a conductor. The characteristic of this type of wire clip is that it cannot be disassembled after installation, also known as dead wire clip. Among them, the wedge-shaped strain clamp is designed and manufactured according to the "wedge" principle. Under the splitting force of the wedge, the steel strand is locked in the clamp. After the steel strand is installed in the clamp, the steel strand is pulled, and the wedge and the steel strand will slide along the wall of the clamp cylinder to the outlet of the clamp at the same time, and become tighter and tighter as they are pulled, and gradually become locked. The wedge-shaped strain clamp is characterized by easy installation and removal. After the clamp is installed, the outlet end of the clamp and the load-bearing wire can be tied tightly with No. 8 galvanized iron wire or the end can be fixed at the tangent point with a steel wire clip.

However, during the use of the existing wedge-shaped strain-resistant clamps, when there is wind blowing, the clamping plate clamping the transmission line will come out from the wedge-shaped housing, so that the tension force of the transmission line is not enough, so that the transmission line The distance between them becomes smaller, and the power lines are easy to build together when the wind blows again, causing accidents and reducing the safety factor of power transmission.

Utility model content

The purpose of the utility model is to provide a strain-resistant clamp, which can stably clamp the cable, and the clamping plate is not easy to come out from the casing, thereby improving the safety of power transmission.

For solving the problems of the technologies described above, the technical solution of the utility model is:

A strain clamp includes a wedge-shaped housing, the wedge-shaped housing includes a wedge-shaped base plate and L-shaped side plates arranged on both sides of the wedge-shaped base plate, and the wedge-shaped base plate and the L-shaped side plates together form a cavity , the first wire splint and the second wire splint opposite to each other are slid in the cavity, and arc-shaped wire slots are provided on the opposite side of the first wire splint and the second wire splint, and the wedge-shaped housing A fastening structure is provided on the top, and the fastening structure presses the first wire splint and the second wire splint against the inner side of the wedge-shaped housing respectively.

Preferably, the fastening structure includes a threaded through hole provided on the wedge-shaped housing, and a bolt matched with the threaded through hole.

Preferably, there are two fastening structures, and the two fastening structures are symmetrically arranged on the wedge-shaped housing.

Preferably, the two fastening structures are both arranged on the wedge-shaped base plate.

Preferably, the two fastening structures are respectively arranged on the two L-shaped side plates.

Preferably, the two ends of the wedge-shaped housing are respectively a large end and a small end, the small end is provided with an annular connector, and the large end is provided with a pull plate hinged to the wedge-shaped housing.

Preferably, the pulling plate includes two hanging plates, one end of the two hanging plates is hinged to the wedge-shaped housing, and the other ends of the two hanging plates are connected together by a screw.

Preferably, the outer surface of the wedge-shaped housing is provided with transverse reinforcing ribs.

Preferably, bosses are provided on the outer walls of the first wire splint and the second wire splint.

After adopting the above technical solution, the beneficial effect of the utility model is that the tension clamp of the utility model includes a wedge-shaped housing, the wedge-shaped housing includes a wedge-shaped base plate, and L-shaped side plates arranged on both sides of the wedge-shaped base plate. And a cavity is formed between the wedge-shaped base plate and the two L-shaped side plates. The cavity is provided with a first wire splint and a second wire splint opposite to each other, and the first wire splint and the second wire splint are both slidably arranged with the wedge-shaped housing. Moreover, the wedge-shaped housing of the utility model is provided with a fastening structure, which fastens the first wire splint and the wedge-shaped housing, and also fastens the second wire splint and the wedge-shaped housing. The fastening structure can tightly press the splint against the inner wall of the wedge-shaped housing, so when the tension clamp of the utility model is used, it can resist natural wind and can prevent the first splint and the second wire When the splint is pulled out from the cavity, the power line clamped by it is prevented from being pulled out, thereby avoiding the short circuit between the power lines due to wind blowing, and ensuring the safety of power transmission.

Since the fastening structure includes threaded through holes arranged on the wedge-shaped housing and bolts matched with the threaded through holes; the fastening structure makes the fastening operation convenient.

Since the two fastening structures are both arranged on the wedge-shaped base plate; this structure makes the operation convenient and not affected by other structures during the fastening operation.

Because the two fastening structures are respectively arranged on the two L-shaped side plates; the force on the wedge-shaped housing is uniform.

Since the outer surface of the wedge-shaped shell is provided with transverse ribs; this structure increases the structural strength of the wedge-shaped shell.

Since the outer walls of the first wire splint and the second wire splint are provided with bosses, the first wire splint and the second wire splint can be easily slid into the cavity by holding the bosses.

In summary, the utility model of the tension clamp solves the technical problem in the prior art that the tension plate of the tension clamp is easy to fall out of the housing. The strain-resistant clamp of the utility model can clamp the cable stably, and the clamping plate is not easy to come out from the casing, thereby improving the safety of power transmission.

Description of drawings

Fig. 1 is the structural representation of the utility model strain clamp;

Fig. 2 is the back view of Fig. 1;

Fig. 3 is a side view of Fig. 1;

In the figure: 1—wedge-shaped shell, 10—annular connector, 11—transverse rib, 12—hanging lug, 13—threaded through hole, 14—cavity, 15—big end, 16—small end, 17— Wedge-shaped base plate, 18—L-shaped side plate, 2a—first line splint, 2b—second line splint, 20—boss, 3—hanging plate, 4—screw, 5—nut, 6—bolt.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , a tension clamp includes a wedge-shaped housing 1 , and the cross-section of the wedge-shaped housing 1 is C-shaped. The wedge-shaped housing 1 includes a wedge-shaped base plate 17 , an L-shaped side plate 18 is respectively connected to two sides of the wedge-shaped base plate 17 ; At the same time, a plurality of transverse reinforcing ribs 11 are provided on the outside of the wedge-shaped housing 1 , and all the transverse reinforcing ribs 11 are arranged in parallel, which improves the structural strength of the wedge-shaped housing 1 . The two ends of the wedge-shaped housing 1 are respectively a large end 15 and a small end 16, and the large end 15 is provided with a pull plate hinged with the wedge-shaped shell 1. The pull plate of this embodiment includes two hanging plates 3, two hanging plates One end of the board 3 is hinged to it through the lug 12 on the wedge-shaped housing 1, and the other ends of the two hanging boards 3 are connected together by a horizontally arranged screw 4, and the screw 4 is also provided with an adjustable nut 5. The small end 16 is provided with an annular connecting piece 10 , and the annular connecting piece 10 in this embodiment is preferably a ring formed integrally with the wedge-shaped housing 1 .

The cavity 14 is arranged along the extension direction of the wedge-shaped housing 1, and the first wire splint 2a and the second wire splint 2b which are arranged oppositely are arranged in the cavity 14, and the first wire splint 2a and the second wire splint 2b are arranged on the opposite side. There is an arc-shaped wire groove; the first wire splint 2a and the second wire splint 2b are both slidably set with the wedge-shaped housing 1 . The first wire splint 2a and the second wire splint 2b are all wedge-shaped, and the inner walls of the first wire splint 2a and the second wire splint 2b are all provided with a plurality of C-shaped grooves, so that the transmission line and the first wire splint 2a and the second wire splint The friction between 2b increases. At the same time, a boss 20 is provided on the outside of the same end of the first wire splint 2a and the second wire splint 2b. When the first wire splint 2 a and the second wire splint 2 b slide into the cavity 14 , the boss 20 can be held to slide the wire splint into the cavity 14 from the big end 15 .

The wedge-shaped housing 1 of the strain clamp of the utility model is provided with a fastening structure, the fastening structure fastens the first wire splint 2a and the wedge-shaped housing 1, and the fastening structure connects the second wire splint 2b and the wedge-shaped housing 1 fasten. In this embodiment, two fastening structures are selected, and each fastening structure is arranged on the wedge-shaped base plate 17 of the wedge-shaped housing 1 , and the two fastening structures are symmetrically arranged on the wedge-shaped base plate 17 close to the big end 15 . The fastening structure is preferably threaded threaded through holes 13 and bolts 6, wherein the threaded through holes 13 are provided on the wedge-shaped housing 1, and the bolts 6 pass through the threaded through holes 13 and abut against the first wire splint 2a and the second wire splint 2b.

When the strain clamp of the present utility model is in use, a transmission line is arranged in the arc-shaped wire groove in which the first wire splint 2a and the second wire splint 2b are oppositely arranged, and then the first wire splint 2a and the second wire splint 2b are separated from the wedge-shaped housing The big end 15 of 1 slides into the cavity 14, and then inserts the bolt 6 in the threaded through hole 13 corresponding to the first wire splint 2a, or moves the bolt 6 in the threaded through hole 13 into the cavity 14, and finally tightens abut against the first wire splint 2a, so that the first wire splint 2a is tightly abutted against the inner wall of the wedge-shaped housing 1 . According to the above operation, the second wire splint 2b is tightly pressed against the inner wall of the wedge-shaped housing 1; finally, the utility model will Power lines are strained. When the wind blows, the first wire splint 2a and the second wire splint 2b will not easily come out of the cavity 14, and the power line will not need to be pulled out, so that the power line will not be short-circuited or connected under the blowing of the wind. Lap connection ensures the safety of the transmission line.

The above-mentioned preferred embodiments of the utility model are not intended to limit the utility model, and any modifications made within the spirit and principles of the utility model, equivalent to a kind of improvement of the tension clamp structure, etc. Should be included in the scope of protection of the present utility model.

Claims (9)

1. A strain clamp, comprising a wedge-shaped housing, the wedge-shaped housing includes a wedge-shaped base plate and L-shaped side plates arranged on both sides of the wedge-shaped base plate, the wedge-shaped base plate and the L-shaped side plate surround A cavity is formed, and a first wire splint and a second wire splint opposite to each other are slid in the cavity, and arc-shaped wire slots are provided on the opposite side of the first wire splint and the second wire splint, and its characteristics That is, the wedge-shaped housing is provided with a fastening structure, and the fastening structure presses the first wire splint and the second wire splint against the inner side of the wedge-shaped housing respectively. 2 . The strain clamp according to claim 1 , wherein the fastening structure comprises a threaded through hole provided on the wedge-shaped housing, and a bolt matched with the threaded through hole. 3 . 3. The strain clamp according to claim 2, wherein there are two fastening structures, and the two fastening structures are symmetrically arranged on the wedge-shaped housing. 4. The strain clamp according to claim 3, wherein the two fastening structures are both arranged on the wedge-shaped base plate. 5. The strain clamp according to claim 3, characterized in that, the two fastening structures are respectively arranged on the two L-shaped side plates. 6. The strain clamp according to claim 1, characterized in that, the two ends of the wedge-shaped housing are respectively a large end and a small end, the small end is provided with an annular connector, and the large end is provided with a There is a pull plate hinged to the wedge housing. 7. The strain clamp according to claim 6, wherein the pull plate comprises two hanging plates, one end of the two hanging plates is hinged with the wedge-shaped housing, and the two hanging plates The other ends of the boards are connected together by a screw. 8. The strain clamp according to claim 1, characterized in that, the outer surface of the wedge-shaped housing is provided with transverse reinforcing ribs. 9. The strain clamp according to claim 1, characterized in that, the outer walls of the first clamp plate and the second clamp plate are provided with bosses.