CN207282735U - A kind of cable insulation penetrating cable clamp - Google Patents

Abstract

The utility model discloses a cable insulation puncture clamp, which belongs to the field of electric power construction facilities and aims to provide a cable insulation puncture clamp capable of realizing equipotential connection of two cables. The technical scheme is as follows: a cable insulation puncture clamp The wire clamp includes bolts, torque nuts, an upper shell and a lower shell connected by bolts, and the end surface of the upper shell facing the lower shell is provided with a semicircular upper main line hole and an upper branch line hole 1, so that The lower casing is provided with a lower main line hole and a lower branch line hole one, a main line through hole is formed between the upper main line hole and the lower main line hole, and a branch line through hole is formed between the upper branch line hole one and the lower branch line hole one. Hole 1, the upper casing is provided with an upper conductive sheet, and the upper conductive sheet is respectively provided with a puncture blade 1 and a puncture blade 2 extending into the upper main line hole and the upper branch line hole 1; the upper casing is provided with a vertical insertion An insulation barrier for branch line through hole 1, and a barrier groove for matching with the insulation barrier is provided on the lower housing.

Description

Cable insulation piercing clamp

technical field

The utility model relates to an electric power construction facility, in particular to a cable insulation puncture clamp.

Background technique

The cable insulation puncture clamp is a new type of connector introduced from abroad and independently developed by our country in recent years to replace the pre-branched cable and the traditional connection. It is suitable for a new type of cable T-connection product for small-capacity power and lighting power supply systems. The use of cable insulation piercing clamp is another cable T-connection method after the cable distribution box and pre-branched cables. It has the characteristics of safer and more reliable power distribution, simple and convenient installation, waterproof, low environmental requirements, maintenance-free, and more economical. It can be used in low-voltage power and lighting distribution lines such as high-rise buildings, residential buildings, street lamp power distribution, and outdoor overhead lines. It can be installed in shafts or in the open air. Its working principle is to connect the cables that need to be connected through the contact blade in the special insulation piercing clamp. When connecting the cables, strip the protective layer and armor of the two cables that need to be connected, place the pair of cables (with insulation layer) that need to be connected in the two sets of piercing contact blades of the cable clamp, and use a special wrench to tighten the torque nut , the contact blade will pierce the cable insulation layer and make contact with the conductor. For cables of different sizes, a suitable torque nut should be selected.

The Chinese patent with the notification number CN205692989U discloses an insulating piercing clamp, which includes a relatively movable insulating shell composed of upper and lower parts, a piercing blade, a waterproof sealing rubber pad, and a torque nut. a channel for passing through branch cables, the inner wall of the channel is provided with the waterproof sealing rubber pad, and the piercing blade passes through the waterproof sealing rubber pad and is relatively fixed on the inner wall of the insulating housing, so A branch line protection cap is provided at one side port of the channel, a protective bolt is provided between the two channels, and the protective bolt extends outward beyond the insulating housing, and the torque nut is arranged on the protective bolt The outer end of the torque nut is driven by external force to push the upper part of the insulating housing to move towards the lower part of the insulating housing.

The insulation piercing clamp mentioned above can only realize the connection between one branch cable and the main cable because there is only one channel. When it is necessary to equipotentially connect two cables during construction, it needs to cooperate with other insulation piercing clamps, which is very inconvenient. convenient.

Utility model content

The purpose of the utility model is to provide a cable insulation puncture clamp, which has the effect of realizing equipotential connection of two cables.

The above-mentioned technical purpose of the utility model is achieved through the following technical solutions:

A cable insulation piercing clamp, comprising bolts, torque nuts, an upper shell and a lower shell connected up and down by bolts, the end face of the upper shell facing the lower shell is provided with semicircular upper main wire holes and Upper branch line hole one, the lower housing is provided with a lower main line hole and a lower branch line hole one, a main line through hole is formed between the upper main line hole and the lower main line hole, the upper branch line hole one and the lower branch line hole one A branch line through hole 1 is formed between them;

The upper casing is provided with an insulating flap vertically inserted into the through hole 1 of the branch line, and the lower casing is provided with a flap groove matched with the insulating flap;

The upper casing is provided with an upper conductive sheet, and the upper conductive sheet is respectively provided with a puncture blade 1 and a puncture blade 2 extending into the upper main line hole and the upper branch line hole 1, and the puncture blade 2 is set to two and located respectively Both sides of the insulation barrier;

When the inner core of the main line cable is in contact with the piercing blade, the diameter of the main line through hole is equal to the outer diameter of the main line cable;

When the inner core of the branch cable is in contact with the second piercing blade, the diameter of the first branch through hole is equal to the outer diameter of the branch cable.

By adopting the above technical scheme, the insulating baffle can divide the branch line through hole one into two wiring areas, so that two branch line cables can be inserted simultaneously along the two ends of the branch line through hole one, and the torque nut is twisted off, so that the puncture blade one and the puncture The second blade pierces the main line cable and the branch line cable respectively, and uses the upper conductive sheet to conduct electricity, thereby achieving the effect that the two branch line cables can be equipotentially connected to the main line cable.

Further, the lower housing is provided with a lower conductive sheet, and the lower conductive sheet is respectively provided with piercing blades 3 and 4 that extend to the lower main line hole and the lower branch line hole 1;

When the inner cores of the main line cables are in contact with the first piercing blade and the third piercing blade, the diameter of the main line through hole is equal to the outer diameter of the main line cable;

When the inner cores of the branch cables are in contact with the two piercing blades and the four piercing blades, the diameter of the branch through hole one is equal to the outer diameter of the branch cable.

By adopting the above technical scheme, the third piercing blade and the fourth piercing blade can cooperate with the first piercing blade and the third piercing blade respectively, so that both the main line cable and the branch line cable can contact the blades, and the insulation layer outside the cable is easier to be punctured.

Further, the upper casing is provided with a semicircular upper branch hole 2 with the same diameter as the upper branch hole 1, the length direction of the upper branch hole 2 is perpendicular to the upper branch hole 1, and the upper branch hole 2 is far away from the upper branch hole. Main line hole setting;

The lower casing is provided with a lower branch line hole 2, and a branch line through hole 2 is formed between the upper branch line hole 2 and the lower branch line hole 2;

The upper conductive sheet is provided with a puncture blade five extending into the upper branch line hole two, and the lower conductive sheet is provided with a puncture blade six extending into the lower branch line hole two;

When the inner cores of the branch cables all contact the piercing blade five and the piercing blade six, the diameter of the branch through hole two is equal to the outer diameter of the branch cable.

By adopting the above technical scheme, the branch line through hole 2 can allow another branch line cable to penetrate, and the branch line cable is pierced by the piercing blade five and the piercing blade six to realize communication with the main line cable; One is vertical, which can realize equipotential connection of branch cables in two different directions, which increases the scope of application of the cable insulation piercing clamp;

Further, protrusions are evenly provided on the periphery of the end surface of the upper case facing the lower case, and grooves for matching with the protrusions are provided on the lower case.

By adopting the above technical solution, the embedding of the protrusions in the grooves can make the combination of the upper and lower shells more accurate and fast, thereby achieving the effect of convenient construction and installation.

Further, arc-shaped deflectors are provided on the surface of the upper casing above the upper main line hole, the first upper branch line hole and the second upper branch line hole, and the diameter of the arc-shaped flow guide plate is larger than that of the upper main line hole, The diameter of upper branch line hole 1 and upper branch line hole 2.

By adopting the above-mentioned technical scheme, the arc-shaped deflector can play a role of diversion, and the rainwater can flow away along the arc direction when passing through the arc-shaped deflector, so that the rainwater is not easy to seep into the branch line hole 1, the branch line hole 2 and the main line hole Oxidizes the cable inside, thereby prolonging the service life of the cable.

Further, the first puncture blade, the second puncture blade, the third puncture blade, the fourth puncture blade, the fifth puncture blade, and the sixth puncture blade are provided with soft protective sleeves.

By adopting the above technical scheme, when the cable insulation puncture clip is not in use, the soft protective sleeve can isolate the blade from contact with the external environment, thereby protecting the blade

Further, a grease layer is provided inside the soft protective cover, and the grease layer is filled with insulating and heat-conducting grease.

By adopting the above technical scheme, when the soft protective cover is punctured, the insulating and heat-conducting grease flowing out of the grease layer can seal the gap between the cable and the upper and lower housings, so that the entire cable insulation puncture clamp forms a fully closed structure, which improves Overall waterproof and insulating properties.

Further, the upper shell is connected with a rainproof cap through a string, and the rainproof cap is set on the bolt and the torque nut.

By adopting the above technical solution, after the connection between the main line cable and the branch line cable is completed, the rainproof cap is covered on the bolt, so that the bolt is not easy to be corroded by rainwater, so that the stable connection between the upper and lower housings is not easily affected.

In summary, the utility model has the following beneficial effects:

1. Through the cooperation of the insulating baffle and the baffle groove, the branch line through hole 1 is divided into two threading areas, so that two branch line cables can be inserted into the branch line through hole 1 at the same time to realize the equipotential connection with the main line cable;

2. Through the setting of branch line through hole 2, the equipotential connection between three branch line cables at different positions and the main line cable can be realized, which increases the use range of cable insulation puncture clamps;

3. Through the cooperation between the bump and the groove, the phenomenon of dislocation is not easy to occur when the upper shell and the lower shell are connected;

4. Through the setting of the arc deflector, it can play the role of diversion, so that the rainwater is not easy to directly enter the main line through hole, the branch line through hole 1 and the branch line through hole 2, so that the cable is not easy to oxidize.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure used to embody the cable insulation piercing clamp in this embodiment;

Fig. 2 is an exploded view of the structure used to embody the cable insulation piercing clamp in the present embodiment;

Fig. 3 is an enlarged view of part A in Fig. 2 .

In the figure, 1, bolt; 2, torque nut; 3, upper shell; 31, upper main wire hole; 32, upper branch wire hole one; 33, upper conductive sheet; 331, puncture blade one; 332, puncture blade two; 333 , piercing blade five; 34, upper branch line hole two; 35, bump; 36, insulating baffle; 37, arc deflector plate; 4, lower shell; 41, lower main line hole; 42, lower branch line hole one; 43, lower conductive sheet; 431, puncture blade three; 432, puncture blade four; 433, puncture blade six; 44, lower branch line hole two; 45, groove; 46, block groove; 5, main line through hole; 6, Branch line through hole one; 61, threading area; 7, branch line through hole two; 8, soft protective cover; 81, grease layer; 9, string; 10, rainproof cap.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail. (principle beneficial effect)

Wherein the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "bottom" and "top "Face", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

A cable insulation piercing clamp, as shown in FIG. 1 , includes a bolt 1 , a torque nut 2 , an upper case 3 and a lower case 4 . The upper shell 3 and the lower shell 4 are connected by bolts 1 , and the torque nuts 2 are arranged on the rods of the bolts 1 .

As shown in Figure 1, on the upper casing 3, a rainproof cap 10 is connected by a string 9, and the rainproof cap 10 is sleeved on the bolt 1 and the torque nut 2, and the rainproof cap 10 can make the bolt 1 and the torque nut 2 It is not easy to be corroded by rainwater, so that the connection between the upper casing 3 and the lower casing 4 is more stable.

As shown in FIG. 2 , grooves 45 are evenly provided on the periphery of the end surface of the lower casing 4 facing the upper casing 3 , and the upper casing 3 is provided with protrusions 35 embedded in the grooves 45 . Through the cooperation of the protrusion 35 and the groove 45, the upper case 3 and the lower case 4 can be quickly and accurately connected together, and in the process of connecting, the upper case 3 and the lower case 4 are not easy to be mutually misalignment phenomenon.

As shown in Figure 1, the upper main line hole 31 and the upper branch line hole 32 are provided on the end surface of the upper shell 3 facing the lower shell 4, and the diameters of the upper main line hole 31 and the upper branch line hole 32 are the same. ; On the lower shell 4 are respectively provided with the upper main line hole 31 and the upper branch line hole one 32 with the lower main line hole 41 and the lower branch line hole one 42 . A main line through hole 5 is formed between the upper main line hole 31 and the lower main line hole 41 , and a branch line through hole one 6 is formed between the upper branch line hole one 32 and the lower branch line hole one 42 .

As shown in Figure 2, an insulating baffle 36 inserted into the through hole 6 of the branch line is provided in the upper casing 3, and the insulating baffle 36 is arranged at the midpoint of the length direction of the through hole 6 of the branch line. A blocking slot 46 matching the insulating blocking sheet 36 is provided. When the insulating baffle 36 is embedded in the baffle slot 46 , two threading areas 61 are formed in the branch line through hole one 6 (see FIG. 1 ).

As shown in Figures 1 and 2, an upper conductive sheet 33 is provided in the upper housing 3, and the upper conductive sheet 33 is respectively provided with a puncture blade 331 and a puncture blade extending into the upper main line hole 31 and the upper branch line hole 32. Two 332; the lower shell 4 is provided with a lower conductive sheet 43, and the lower conductive sheet 43 is respectively provided with a piercing blade three 431 and a piercing blade four 432 extending to the lower main wire hole 41 and the lower branch wire hole one 42. Both the second puncture blade 332 and the fourth puncture blade 432 are set as a pair, and are respectively distributed in the two threading areas 61 . When the inner core of the main line cable placed in the main line through hole 5 conflicts with the piercing blade one 331 and the piercing blade three 431 at the same time, the diameter of the main line through hole 5 is equal to the outer diameter of the main line cable; When the inner core of the branch line cable in the one 6 conflicts with the two puncture blades 332 and four 432 piercing blades simultaneously, the diameter of the branch line through hole one 6 is equal to the outer diameter of the branch line cable at this moment.

As shown in FIGS. 1 and 2 , an upper branch wire hole 2 34 is also provided on the end surface of the upper case 3 facing the lower case 4 . Upper branch line hole two 34 is set away from upper main line hole 31, and the length direction of upper branch line hole two 34 is perpendicular to the length direction of upper branch line hole one 32, and the diameter of upper branch line hole two 34 is equal to the diameter of upper branch line hole one 32. The upper conductive sheet 33 is provided with a piercing blade five 333 extending into the upper branch hole two 34; To the puncture blade six 433 in the lower branch line hole two 44; a branch line through hole two 7 is formed between the upper branch line hole two 34 and the lower branch line hole two 44. When the inner core of the branch line cable placed in the branch line through hole two 7 conflicts with the piercing blade five 333 and the piercing blade six 433 simultaneously, the diameter of the branch line through hole two 7 is equal to the outer diameter of the branch line cable.

As shown in FIG. 2 , the first puncture blade 331 , the second puncture blade 332 , the third puncture blade 431 , the fourth puncture blade 432 , the fifth puncture blade 333 and the six puncture blade 433 are provided with a soft protective cover 8 .

As shown in FIG. 3 , a grease layer 81 is provided inside the soft protective cover 8 , and the grease layer 81 is filled with insulating and heat-conducting grease. When the cable insulation puncture clip is not in use, the soft protective sheath 8 can isolate the above-mentioned blade from contact with the external environment, and play a role in protecting the blade.

As shown in Figure 1, on the surface of the upper casing 3 and above the upper main line hole 31, the upper branch line hole 1 32, and the upper branch line hole 2 34, an arc-shaped deflector 37 is arranged, and the arc-shaped deflector 37 The diameter is greater than the diameter of the upper main line hole 31, the diameter of the upper branch line hole one 32 and the upper branch line hole two 34. The arc deflector 37 can play a diversion effect, and the rainwater can flow away along its arc direction when passing through the arc deflector 37, so that the rainwater is difficult to infiltrate into the branch line through hole 2 and the main line through hole 5 to make the cable break down. Oxidation, thus prolonging the service life of the cable.

The specific implementation process: firstly, select the suitable torque nut 2 according to the size of the inner core of the cable to be connected, and then select the appropriate insertion position according to the quantity and distribution of the branch cables to be equipotentially connected, and put the main cable into the main cable. in hole 5.

When only two branch cables need to be equipotentially connected and arranged in the same direction, insert the terminals of the branch cables into the two threading areas 61 respectively. Take off the rainproof cap 10 and tighten the torque nut 2, through the cooperation of the piercing blade one 331 and the piercing blade three 431 and the piercing blade two 332 and the piercing blade four 432, first puncture the soft protective cover 8, so that the grease layer 81 The insulating and heat-conducting grease inside flows out, sealing the gap between the cable and the upper casing 3 and the lower casing 4, so that the entire cable insulation piercing clamp forms a fully enclosed structure, improving its overall waterproof performance; and then piercing the external insulation of the branch cable Layer, use the upper conductive sheet 33 to conduct electricity, so as to realize the equipotential connection between the two branch cables and the main cable.

When only two branch cables are equipotentially connected and arranged according to the vertical direction, insert the terminals of the branch cables respectively into branch line through hole 2 7 and any threading area 61; when three branch cables are required to be equipotentially connected, Insert the three branch cables into the two threading areas 61 and the second through hole 7 of the branch respectively.

After the connection of the main line cable and the branch line cable is completed, the rainproof cap 10 is covered on the bolt 1 to complete the whole wiring operation.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new claims are protected by patent law.

Claims (8)

1. a kind of cable insulation penetrating cable clamp, including bolt (1), torque nut (2), the upper casing being vertically connected with by bolt (1) Body (3) and lower housing shell (4), it is semicircular upper main line hole that the end face of upper shell (3) towards the lower housing shell (4), which is provided with, (31) and upper lateral hole one (32), the lower housing shell (4) are equipped with lower main line hole (41) and lower lateral hole one (42), the upper master Formed with main line through hole (5), the upper lateral hole one (32) and lower lateral hole one between string holes (31) and lower main line hole (41) (42) formed with branch line three-way hole one (6) between, it is characterized in that：

The insulation catch (36) for being inserted perpendicularly into branch line three-way hole one (6) is equipped with the upper shell (3), is set on the lower housing shell (4) There is the catch groove (46) coordinated with insulation catch (36)；

Upper conductive sheet (33) is equipped with the upper shell (3), is respectively equipped with the upper conductive sheet (33) and extends to main line hole (31) piercing blade one (331) and piercing blade two (332) and in upper lateral hole one (32), the piercing blade two (332) It is set to two and respectively positioned at the both sides of insulation catch (36)；

When the inner core of backbone cable is contacted with piercing blade one (331), the diameter of the main line through hole (5) is equal to backbone cable Outside diameter；

When the inner core of branch cable is contacted with piercing blade two (332), the diameter of the branch line three-way hole one (6) is equal to branch line electricity The outside diameter of cable.

2. a kind of cable insulation penetrating cable clamp according to claim 1, it is characterized in that：It is equipped with down in the lower housing shell (4) Conductive sheet (43), is respectively equipped with the puncture for extending to lower main line hole (41) and lower lateral hole one (42) on the lower conductive sheet (43) Blade three (431) and piercing blade four (432)；

When the inner core of backbone cable is contacted with piercing blade one (331) and piercing blade three (431), the main line through hole (5) diameter is equal to the outside diameter of backbone cable；

When the inner core of branch cable is contacted with piercing blade two (332) and piercing blade four (432), the branch line three-way hole one (6) diameter is equal to the outside diameter of branch cable.

3. a kind of cable insulation penetrating cable clamp according to claim 2, it is characterized in that：It is equipped with the upper shell (3) straight Lateral hole two (34) in the semicircle identical with upper lateral hole one (32) of footpath, the length direction of the upper lateral hole two (34) with it is upper Vertically, the upper lateral hole two (34) is set lateral hole one (32) away from upper main line hole (31)；

The lower housing shell (4) is equipped with lower lateral hole two (44), between the upper lateral hole two (34) and lower lateral hole two (44) Formed with branch line three-way hole two (7)；

The upper conductive sheet (33) is equipped with the piercing blade five (333) extended in lateral hole two (34), the lower conduction Piece (43) is equipped with the piercing blade six (433) extended in lower lateral hole two (44)；

When the inner core of branch cable is contacted with piercing blade five (333) and piercing blade six (433), the branch line three-way hole two (7) diameter is equal to the outside diameter of branch cable.

4. a kind of cable insulation penetrating cable clamp according to claim 1, it is characterized in that：The upper shell (3) is towards lower casing Convex block (35) is uniformly provided with the end face periphery of body (4), the lower housing shell (4) is equipped with the groove coordinated with convex block (35) (45)。

5. a kind of cable insulation penetrating cable clamp according to claim 3, it is characterized in that：The surface of the upper shell (3) is simultaneously Arc deflector (37), institute are equipped with above upper main line hole (31), upper lateral hole one (32) and upper lateral hole two (34) The diameter for stating arc deflector (37) is more than upper main line hole (31), upper lateral hole one (32), the diameter of upper lateral hole two (34).

6. a kind of cable insulation penetrating cable clamp according to claim 5, it is characterized in that：The piercing blade one (331), wear Bayonet piece two (332), piercing blade three (431), piercing blade four (432), piercing blade five (333), piercing blade six (433) On be arranged with soft protective jacket (8).

7. a kind of cable insulation penetrating cable clamp according to claim 6, it is characterized in that：Set in the soft protective jacket (8) There is oil layer (81), insulating heat-conductive grease is filled with the oil layer (81).

8. a kind of cable insulation penetrating cable clamp according to claim 1, it is characterized in that：By thin on the upper shell (3) Rope (9) is connected with rainhat (10), and the rainhat (10) is sleeved on bolt（1）With on torque nut (2).