CN204905459U - Safe portable earth bar - Google Patents

Safe portable earth bar Download PDF

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Publication number
CN204905459U
CN204905459U CN201520694429.5U CN201520694429U CN204905459U CN 204905459 U CN204905459 U CN 204905459U CN 201520694429 U CN201520694429 U CN 201520694429U CN 204905459 U CN204905459 U CN 204905459U
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CN
China
Prior art keywords
contact
moving contact
screw mandrel
fixing
fixed contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201520694429.5U
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Chinese (zh)
Inventor
严金钟
王赫林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HEBEI XINZHI ELECTRONIC POWER EQUIPMENT MANUFACTURING Co Ltd
Original Assignee
HEBEI XINZHI ELECTRONIC POWER EQUIPMENT MANUFACTURING Co Ltd
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Publication date
Application filed by HEBEI XINZHI ELECTRONIC POWER EQUIPMENT MANUFACTURING Co Ltd filed Critical HEBEI XINZHI ELECTRONIC POWER EQUIPMENT MANUFACTURING Co Ltd
Priority to CN201520694429.5U priority Critical patent/CN204905459U/en
Application granted granted Critical
Publication of CN204905459U publication Critical patent/CN204905459U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a safe portable earth bar, including the connecting rod, the one end of connecting rod is provided with the lead screw, and threaded connection has the fixing -line device on the lead screw, the fixing -line device is including the static contact and the moving contact that are used for pressing from both sides tight wire, the moving contact can with static contact looks butt, be provided with the smooth arc groove of indent on the relative face of static contact and moving contact, predetermine the internal thread hole on the static contact, be provided with the fixing bolt who is used for the joint ground wire on the internal thread hole. The utility model discloses respectively make one at the contact surface of static contact and moving contact according to the round profile of wire and be close semicircle type recess to making the area of contact between fixing -line device and the wire increase, guaranteeing that the heavy current passes through smoothly in the twinkling of an eye, area of contact enlarges, increases friction power, and the wire became flexible with reliable being difficult for of being connected between the fixing -line device. In addition, it is capable that fixing bolt presets the static contact through the internal thread hole, only needs one -hand operation to tighten fixing bolt when using and can fix the ground wire, and its use is very convenient to it connects reliably.

Description

Safe portable earth rod
Technical field
The utility model relates to electric power overhaul equipment technical field, more particularly, and particularly a kind of safe portable earth rod.
Background technology
Earth rod, is also called earth electrode, ground network, is to improve earthing conductor inner conductive performance, the assembly of the outside soil resistivity of reduction earthing conductor designed by theoretical foundation.Earth rod has the advantages such as easy construction, floor space is little, non-environmental-pollution, long service life and resistance are low.
Traditional earth rod includes fixing-line device and connecting rod, and fixing-line device is arranged on connecting rod, and fixing-line device includes the card line contact of two plank frames, its structure and traditional clamp structure similar, by card line contact, clamping connection is carried out to wire.
Traditional earth rod is due to the structural design of its fixing-line device, and there are the following problems: the contact area between card line contact and wire is less, and not only make its electric conductivity more weak, its connection reliability is also poor.
Utility model content
(1) technical problem
How to provide a kind of and connect reliable, that electric conductivity is excellent earth rod, become those skilled in the art's problem demanding prompt solution.
(2) technical scheme
The utility model provides a kind of safe portable earth rod, includes connecting rod, and one end of described connecting rod is provided with screw mandrel, and be threaded fixing-line device on described screw mandrel;
Described fixing-line device includes fixed contact for clamping wire and moving contact, and described moving contact can abut against with described fixed contact, is provided with the level and smooth deep-slotted chip breaker of indent on described fixed contact and the relative face of described moving contact;
On described fixed contact, be preset with internal thread hole, on described internal thread hole, be provided with the set bolt for clamping ground wire.
Preferably, described fixed contact is provided with screwed hole, described screw mandrel is inserted in described screwed hole; The spring shim for applying pretightning force is provided with between described fixed contact and described screw mandrel.
Preferably, described moving contact is connected with described screw mandrel, is provided with the spring shim for applying pretightning force between described moving contact and described screw mandrel.
Preferably, described screw mandrel is arranged through described screwed hole; The end of described screw mandrel is provided with described moving contact; Described moving contact is provided with draw-in groove, and described moving contact is arranged on described fixed contact slidably by described draw-in groove.
Preferably, described set bolt is interior spiral shell corner bolt.
(3) beneficial effect
Designed by said structure, the utility model respectively makes one close to semi-circular groove at the contact-making surface of fixed contact and moving contact by the round profile of wire, thus make the contact area between fixing-line device and wire reach more than 80%, at least larger than the contact area of traditional earth rod 4-5 times.The advantage of design like this is: ensure that instantaneous large-current passes through smoothly, contact area expands, and increase frictional force, the connection between wire and fixing-line device reliably not easily loosens.
Accompanying drawing explanation
Fig. 1 is the partial structurtes schematic diagram of safe portable earth rod in the utility model embodiment;
Fig. 2 is the structural representation that in the utility model embodiment, screw mandrel is connected with moving contact;
In fig. 1 and 2, the corresponding relation of component names and accompanying drawing number is:
Screw mandrel 1, fixed contact 2, moving contact 3, internal thread hole 4.
Embodiment
Below in conjunction with drawings and Examples, execution mode of the present utility model is described in further detail.Following examples for illustration of the utility model, but can not be used for limiting scope of the present utility model.
In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more; Term " on ", D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " is connected ", " connection " should be interpreted broadly, such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
Please refer to Fig. 1 and Fig. 2, wherein, Fig. 1 is the partial structurtes schematic diagram of safe portable earth rod in the utility model embodiment; Fig. 2 is the structural representation that in the utility model embodiment, screw mandrel is connected with moving contact.
The utility model provides a kind of safe portable earth rod, includes connecting rod, and one end of connecting rod is provided with screw mandrel 1, and be threaded fixing-line device on screw mandrel 1; Fixing-line device includes fixed contact 2 for clamping wire and moving contact 3, and moving contact 3 can abut against with fixed contact 2, is provided with the level and smooth deep-slotted chip breaker of indent on fixed contact 2 and the relative face of moving contact 3.
In said structure design, fixing-line device includes moving contact 3 and fixed contact 2, and moving contact 3 can slide relative to fixed contact 2, thus by conductor clamping.The side that moving contact 3 and fixed contact 2 offset is arranged the level and smooth deep-slotted chip breaker of indent, after moving contact 3 and fixed contact 2 offset, divide the level and smooth deep-slotted chip breaker be located on moving contact 3 and fixed contact 2 can form circle, an ellipse or connect rotund connecting hole, wire is arranged in this connecting hole.
Compared to traditional plank frame, the utility model respectively makes one close to semi-circular groove at the contact-making surface of fixed contact 2 and moving contact 3 by the round profile of wire, thus make the contact area between fixing-line device and wire reach more than 80%, at least larger than the contact area of traditional earth rod 4-5 times.The advantage of design like this is: ensure that instantaneous large-current passes through smoothly, contact area expands, and increase frictional force, the connection between wire and fixing-line device reliably not easily loosens.
In traditional earth rod structure, the connected mode of ground wire is: be tightened on fixed contact by the cooperation of bolt, nut by ground clamp, arrange like this, needs both hands to act on bolt and nut in operation simultaneously, earth rod is used very inconvenient.
In order to solve this problem, the utility model has preset the female internal thread hole 4 of tool on fixed contact 2, internal thread hole 4 arranges set bolt, so, when reality uses, operating personnel only need to tighten set bolt, whole operating process one hand can complete, and makes the utility model easy to use.
In addition, internal thread hole 4 is directly molded on fixed contact 2, thus improves the stability of set bolt 4 setting, avoids ground wire to come off.
Particularly, fixed contact 2 is provided with screwed hole, screw mandrel 1 is inserted in screwed hole; The spring shim for applying pretightning force is provided with between fixed contact 2 and screw mandrel 1.
Particularly, moving contact 3 is connected with screw mandrel 1, is provided with the spring shim for applying pretightning force between moving contact 3 and screw mandrel 1.
Screw mandrel 1 and fixing-line device junction arrange spring shim, apply pretightning force, when the utility model uses not easily because of loosened screw when earth rod swings by spring shim aloft.
In an execution mode of the present utility model, one end of fixed contact 2 arranges screwed hole, the other end of fixed contact 2 arranges the level and smooth deep-slotted chip breaker be used for conductive contact, screw mandrel 1 arranges moving contact 3 through on the termination of screwed hole (being threaded with screwed hole), so, moving contact 3 can be made to move relative to fixed contact 2 by rotary screw rod 1.In order to avoid fixed contact 2 rotates, moving contact 3 is provided with draw-in groove, moving contact 3 utilizes notch, and moving contact 3 is arranged on fixed contact 2 slidably by draw-in groove.
Based on said structure design, built-in screw thread on earth rod fixed contact 2 body, is directly screwed to screw when dispatching from the factory on fixed contact 2 body, no longer worries that screw falls down during operated by personnel, and not with the hands, one hand just can operate.By above-mentioned improvement, operated by personnel uses this traditional structure of this earth rod safer, more convenient.
Embodiment of the present utility model provides for the purpose of example and description, and is not exhaustively or by the utility model be limited to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present utility model and practical application are better described, and enables those of ordinary skill in the art understand the utility model thus design the various embodiments with various amendment being suitable for special-purpose.

Claims (5)

1. a safe portable earth rod, includes connecting rod, it is characterized in that,
One end of described connecting rod is provided with screw mandrel (1), and be threaded fixing-line device on described screw mandrel;
Described fixing-line device includes fixed contact (2) for clamping wire and moving contact (3), described moving contact can abut against with described fixed contact, is provided with the level and smooth deep-slotted chip breaker of indent on described fixed contact and the relative face of described moving contact;
On described fixed contact, be preset with internal thread hole (4), on described internal thread hole, be provided with the set bolt for clamping ground wire.
2. safe portable earth rod according to claim 1, is characterized in that,
Described fixed contact is provided with screwed hole, and described screw mandrel is inserted in described screwed hole;
The spring shim for applying pretightning force is provided with between described fixed contact and described screw mandrel.
3. safe portable earth rod according to claim 2, is characterized in that,
Described moving contact is connected with described screw mandrel, is provided with the spring shim for applying pretightning force between described moving contact and described screw mandrel.
4. safe portable earth rod according to claim 3, is characterized in that,
Described screw mandrel is arranged through described screwed hole;
The end of described screw mandrel is provided with described moving contact;
Described moving contact is provided with draw-in groove, and described moving contact is arranged on described fixed contact slidably by described draw-in groove.
5. safe portable earth rod according to claim 4, is characterized in that,
Described set bolt is interior spiral shell corner bolt.
CN201520694429.5U 2015-09-09 2015-09-09 Safe portable earth bar Active CN204905459U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520694429.5U CN204905459U (en) 2015-09-09 2015-09-09 Safe portable earth bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520694429.5U CN204905459U (en) 2015-09-09 2015-09-09 Safe portable earth bar

Publications (1)

Publication Number Publication Date
CN204905459U true CN204905459U (en) 2015-12-23

Family

ID=54927613

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520694429.5U Active CN204905459U (en) 2015-09-09 2015-09-09 Safe portable earth bar

Country Status (1)

Country Link
CN (1) CN204905459U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106848912A (en) * 2016-12-22 2017-06-13 国网浙江省电力公司金华供电公司 High-voltgae pothead earthing or grounding means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106848912A (en) * 2016-12-22 2017-06-13 国网浙江省电力公司金华供电公司 High-voltgae pothead earthing or grounding means

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