阅读说明：本技术 一种设备线夹防断装置 (Device is prevented absolutely by equipment fastener ) 是由 陆韦刚 肖远奇 王有军 刘坤 李义 岳廷学 刘庆国 孙胜 宋建 于 2020-04-24 设计创作，主要内容包括：本发明公开了一种设备线夹防断装置,包括出线端子、与所述出线端子连接的夹紧片、螺栓,所述螺栓将所述夹紧片紧固在所述出线端子上；防断单元,包括套设于所述设备线夹上的盒体、与所述螺栓连接的第一弹簧、第二弹簧,所述第一弹簧与第二弹簧之间设置有弹簧座,所述弹簧座位于所述盒体内,所述第一弹簧与第二弹簧的绕向相反、匝数相同；线缆,包括绝缘层、线芯,所述第一弹簧与第二弹簧均套设在所述绝缘层外。本发明的抗弯单元在设备线夹线缆受到摆动的外力作用时,多个对称设置的弹簧对线缆的活动范围进行限制并吸收外力,防止线缆折断。(The invention discloses an equipment wire clamp breakage-proof device which comprises a wire outlet terminal, a clamping piece connected with the wire outlet terminal and a bolt, wherein the bolt fastens the clamping piece on the wire outlet terminal; the anti-breaking unit comprises a box body sleeved on the equipment wire clamp, a first spring and a second spring, wherein the first spring and the second spring are connected with the bolt; the cable comprises an insulating layer and a wire core, wherein the first spring and the second spring are sleeved outside the insulating layer. When the equipment cable clamp cable is subjected to swinging external force, the bending-resistant unit limits the moving range of the cable and absorbs the external force by the plurality of symmetrically arranged springs so as to prevent the cable from being broken.)

1. The utility model provides an equipment fastener prevents disconnected device which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the equipment wire clamp (100) comprises an outlet terminal (101), a clamping piece (102) connected with the outlet terminal (101), and a bolt (103), wherein the bolt (103) is used for fastening the clamping piece (102) on the outlet terminal (101);

the anti-breaking unit (200) comprises a box body (201) sleeved on the equipment wire clamp (100), a first spring (202) and a second spring (203) connected with the bolt (103), a spring seat (204) is arranged between the first spring (202) and the second spring (203), the spring seat (204) is positioned in the box body (201), the winding directions of the first spring (202) and the second spring (203) are opposite, and the number of turns of the first spring (202) and the second spring (203) is the same;

the cable (300) comprises an insulating layer (301) and a wire core (302), wherein the first spring (202) and the second spring (203) are sleeved outside the insulating layer (301).

2. The device of claim 1, wherein: one end of the first spring (202) extends towards the direction of the outgoing line terminal (101) to form a first hook (202a), the other end of the first spring (202) extends towards the direction of the outgoing line terminal (101) to form a second hook (202b), the first hook (202a) and the second hook are sleeved on different bolts (103), and the first hook (202a), the second hook and the outgoing line terminal (101) form a triangular stable structure.

3. The device of claim 2, wherein: the box body (201) comprises a first box body (201a) and a second box body (201b), the first box body (201a) is connected with the second box body (201b) through threads, the first box body (201a) is sleeved outside the equipment wire clamp (100), and the second box body (201b) is sleeved outside the breakage-proof unit (200).

4. The device of claim 3, wherein: the spring seat (204) is sleeved on the cable (300), a limiting hole (204a) is formed in the spring seat (204), and one end of the second spring (203) is inserted into the limiting hole (204 a).

5. The device of claim 4, wherein: sliding blocks (204b) are installed on the circumference of the spring seat (204), sliding grooves (201b-1) are formed in the positions, corresponding to the sliding blocks (204b), of the second box body (201b), and the sliding blocks (204b) stretch into the sliding grooves (201 b-1).

6. The device of claim 5, wherein: the sliding groove (201b-1) comprises a first end (201b-1a) and a second end (201b-1b), the first end (201b-1a) is close to the equipment wire clamp (100) than the second end (201b-1b), and an included angle between a connecting line from the first end (201b-1a) to the second end (201b-1b) and a bus of the second box body (201b) is an acute angle.

7. The device of claim 6, wherein: the anti-bending cable is characterized by further comprising an anti-bending unit (400), wherein the anti-bending unit (400) comprises a fixed sleeve (401) connected with the box body (201) and a movable sleeve (402) sleeved on the cable (300), and the fixed sleeve (401) is connected with the movable sleeve (402) through a third spring (403); the second spring (203) is abutted against the movable sleeve (402) and fixedly connected.

8. The device of claim 7, wherein: at least two pairs of first holes (401a) are formed in the inner side wall of the fixed sleeve (401), and the first holes (401a) are uniformly distributed along the circumference of the fixed sleeve (401); correspondingly, at least two pairs of second holes (402a) are formed in the inner side wall of the movable sleeve (402), and the second holes (402a) are uniformly distributed along the circumference of the movable sleeve (402);

one end of the third spring (403) is fixed to the first hole (401a), and the other end is fixed to the second hole (402 a).

9. The device of claim 8, wherein: the part of the wire core (302) extending out of the insulating layer (301) is located between the outlet terminal (101) and the clamping sheet (102), and the first spring (202) and the second spring (203) are sleeved outside the insulating layer (301).

10. The equipment wire clamp breakage preventing device according to any one of claims 3 to 9, characterized in that: the outlet terminal (101) is provided with a fixing hole (101a), one end of the first box body (201a) is provided with a positioning end (201a-1), and the positioning end (201a-1) is connected with the fixing hole (101a) through a fixing bolt (205).

Technical Field

The invention relates to the field of electric power safety, in particular to an equipment wire clamp breakage prevention device.

Background

The wire clamp is an iron or aluminum metal accessory capable of being fixed on a wire, most of the wire clamp needs to bear large tensile force during operation, and some wire clamps need to ensure good electrical contact. The equipment wire clamp is mainly used for connecting a bus down lead of a substation with a wire outlet terminal of electrical equipment (such as a transformer, a circuit breaker, an isolation switch, a wall bushing and the like), and is divided into two series of aluminum equipment wire flat and copper-aluminum transition equipment wire clamps due to the fact that the wire outlet terminal of the common electrical equipment is copper and aluminum and the bus lead-out wire is divided into steel-cored aluminum stranded wires of aluminum stranded wires. In the daily distribution network circuit, because strain clamp, equipment fastener, embrace formula fastener etc. in the distribution lines expose for a long time in the atmospheric environment and undertake the task of transmission current, because the fastener temperature is higher, the corrosive action is comparatively showing, the swing of wind-blowing wire, make the wire and the fastener link department not hard up strike sparks and cause 10kV distribution lines (switch ) and distribution transformer pile head and make the equipment fastener of gram upper end installation use frequently burn out, cause 10kV distribution network operation unstable.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments, and in this section as well as in the abstract and the title of the invention of this application some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions are not intended to limit the scope of the invention.

The present invention has been made keeping in mind the above problems occurring in the prior art and/or the problems occurring in the prior art.

Therefore, the technical problem to be solved by the invention is that the 10kV distribution line (switch and disconnecting link) and the pile head of the distribution transformer and the equipment wire clamp installed and used at the upper end of the line clamp are frequently burned out due to the fact that the temperature of the wire clamp in the distribution line is high, the corrosion effect is obvious, the wind blows the wire to swing, the connection part of the wire and the wire clamp is loosened and ignited, and the 10kV distribution network is not stable in operation.

In order to solve the technical problems, the invention provides the following technical scheme: an equipment wire clamp breakage preventing device comprises an equipment wire clamp, a clamping piece and a bolt, wherein the equipment wire clamp comprises a wire outlet terminal, the clamping piece connected with the wire outlet terminal, and the bolt fastens the clamping piece on the wire outlet terminal; the anti-breaking unit comprises a box body sleeved on the equipment wire clamp, a first spring and a second spring, wherein the first spring and the second spring are connected with the bolt; the cable comprises an insulating layer and a wire core, wherein the first spring and the second spring are sleeved outside the insulating layer.

As a preferable scheme of the device for preventing the equipment wire clamp from being broken, the device comprises: first spring one end extends to the terminal direction of being qualified for the next round of competitions and forms first couple, the first spring other end extends to the terminal direction of being qualified for the next round of competitions and forms the second couple, first couple is established on different bolts with the second couple cover, first couple and second couple and terminal of being qualified for the next round of competitions form triangle stable structure.

As a preferable scheme of the device for preventing the equipment wire clamp from being broken, the device comprises: the box body includes first box body and second box body, first box body passes through threaded connection with the second box body, first box body cover is established outside the equipment fastener, the second box body cover is established prevent disconnected unit.

As a preferable scheme of the device for preventing the equipment wire clamp from being broken, the device comprises: the spring seat is sleeved on the cable, a limiting hole is formed in the spring seat, and one end of the second spring is inserted into the limiting hole.

As a preferable scheme of the device for preventing the equipment wire clamp from being broken, the device comprises: install the sliding block on the spring holder circumference, the second box body with the position that the sliding block corresponds is provided with the sliding tray, the sliding block stretches into in the sliding tray.

As a preferable scheme of the device for preventing the equipment wire clamp from being broken, the device comprises: the sliding groove comprises a first end and a second end, the first end is close to the equipment wire clamp than the second end, and a connecting line from the first end to the second end and a bus included angle of the second box body are acute angles.

As a preferable scheme of the device for preventing the equipment wire clamp from being broken, the device comprises: the anti-bending unit comprises a fixed sleeve connected with the box body and a movable sleeve sleeved on the cable, and the fixed sleeve is connected with the movable sleeve through a third spring; the second spring is abutted against the movable sleeve and fixedly connected with the movable sleeve.

As a preferable scheme of the device for preventing the equipment wire clamp from being broken, the device comprises: at least two pairs of first holes are formed in the inner side wall of the fixed sleeve and are uniformly distributed along the circumference of the fixed sleeve; correspondingly, at least two pairs of second holes are formed in the inner side wall of the movable sleeve, and the second holes are uniformly distributed along the circumference of the movable sleeve; one end of the third spring is fixed in the first hole, and the other end of the third spring is fixed in the second hole.

As a preferable scheme of the device for preventing the equipment wire clamp from being broken, the device comprises: the part of the wire core extending out of the insulating layer is located between the wire outgoing terminal and the clamping piece, and the first spring and the second spring are sleeved outside the insulating layer.

As a preferable scheme of the device for preventing the equipment wire clamp from being broken, the device comprises: the outlet terminal is provided with a fixing hole, one end of the first box body is provided with a positioning end, and the positioning end is connected with the fixing hole through a fixing bolt.

The invention has the beneficial effects that:

1. when the device wire clamp is subjected to axial external force, the breakage preventing unit forms a triangular stable structure between the first spring and the wire clamp to prevent the cable from being separated, the second spring plays a role in locking the axial movement of the cable, and the larger the external force is, the tighter the locking is;

2. when the equipment cable clamp cable is subjected to swinging external force, the bending-resistant unit limits the moving range of the cable and absorbs the external force by the plurality of symmetrically arranged springs so as to prevent the cable from being broken.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

fig. 1 is a schematic structural view of an equipment clamp breakage preventing device according to an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of an equipment clamp breakage preventing device according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional structure view of an apparatus clamp breakage preventing device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a spring seat in the device for preventing the wire clamp from being broken according to an embodiment of the invention;

fig. 5 is a schematic structural diagram of a bending-resistant unit in the device for preventing a wire clamp from being broken according to an embodiment of the invention;

fig. 6 is a schematic view illustrating an installation position of a bending unit in the device for preventing a wire clamp from being broken according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a sliding groove and a sliding block in the device for preventing the wire clamp from being broken according to an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.