CN218037062U

CN218037062U - Resistance testing device

Info

Publication number: CN218037062U
Application number: CN202222174332.4U
Authority: CN
Inventors: 刘世东; 刘科均; 李明
Original assignee: Sichuan Kaile Lightning Protection Testing Technology Co ltd
Current assignee: Sichuan Kaile Lightning Protection Testing Technology Co ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-12-13
Anticipated expiration: 2032-08-17

Abstract

The utility model discloses a resistance testing arrangement, including the support, set up respectively the last termination contact block and the lower extreme contact block at both ends about the support to and through the wire respectively with the detector that upper end contact block and lower extreme contact block electricity are connected. The lower surface of the upper contact block is provided with a horn-shaped guide opening, the top of the guide opening is communicated with a placing hole, and a contact conductive block is arranged in the placing hole; can be fast, accurate when using introduce the most advanced of lightning rod to place downtheholely through the uide hole to make the most advanced and the contact conducting block contact of lightning rod, because the most advanced of lightning rod is located and places downtheholely, so the most advanced of lightning rod is difficult to break away from with the contact conducting block, has improved the stability that the device used.

Description

Resistance testing device

Technical Field

The utility model relates to a lightning protection detects technical field, specifically indicates a resistance testing arrangement.

Background

A lightning rod is an important component in lightning protection facilities, which is located outdoors for guiding lightning down into the ground. Because the lightning rod is exposed outdoors for a long time, the resistance value of the lightning rod is possibly increased after long-time weather erosion and other reasons, and the lightning protection effect of the lightning protection facility is influenced. Therefore, the worker needs to periodically detect the resistance value of the lightning rod.

For the resistance value of conveniently detecting the lightning rod, the utility model patent of application number CN201920882539.2 discloses a lightning rod attitude detecting system, and this detecting system includes detector and base, is provided with insulating pole setting perpendicularly on the base, is provided with first metal test rod and second metal test rod on the insulating pole setting. When the lightning rod detection device is used, the first metal detection rod and the second metal detection rod are respectively contacted with different parts of the lightning rod, the resistance values of the different parts of the lightning rod can be quickly detected by applying current through the detector, and the lightning rod detection device is simple to use.

However, the above-mentioned patent technology still has the problem when using, when the staff wants to detect the tip to the resistance value of bottom in lightning rod upper portion, because first metal test rod and second metal test rod are the straight-bar, because the high height of lightning rod upper portion tip, the staff is difficult accurate with first metal test rod or second metal test rod touching lightning rod's tip position, often need the trial many times of repetition, even touch first metal test rod or second metal test rod the tip position of lightning rod, but because highly higher, insulating pole setting rocks easily, make touch time very short, even the detected data has not come to the record yet, the test rod breaks away from with the lightning rod tip promptly, this brings very big puzzlement for the testing personnel.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve above-mentioned problem, provide a resistance testing device, its can be fine with the most advanced stable contact of lightning rod, improve the convenience of using.

The purpose of the utility model is realized through the following technical scheme: a resistance testing device comprises a bracket, an upper end contact block and a lower end contact block which are respectively arranged at the upper end and the lower end of the bracket, and a detector which is respectively and electrically connected with the upper end contact block and the lower end contact block through wires; the lower surface of the upper end contact block is provided with a horn-shaped guide opening, the top of the guide opening is communicated with a placing hole, and a contact conductive block is arranged in the placing hole; the contact conductive block is electrically connected with the detector through a lead.

Furthermore, a wire connecting column is connected to the contact conductive block, and the upper end of the wire connecting column penetrates through the placing hole and then is detachably connected with the wire.

The diameter of the contact conductive block is smaller than that of the placing hole, so that the contact conductive block can move up and down in the placing hole; and the wire connecting column is provided with a limiting block for preventing the contact conductive block from being separated from the placing hole.

And a spring is arranged between the upper surface of the contact conductive block and the bottom of the placing hole.

And an upper end fixture block is arranged at one end of the upper end contact block, which is far away from the bracket, and a wire joint is arranged on the upper end fixture block.

The upper end fixture block is provided with an arc-shaped bayonet.

The lower end contact block is provided with an arc bayonet, and the bottom of the lower end contact block is provided with an insulating cushion block; the lower end contact block is detachably connected with the lead through a lead joint on the lower end contact block.

The support includes the telescopic link, the telescopic link pass through first connecting rod with the upper end contact block is connected, and, the telescopic link still pass through the second connecting rod with the lower extreme contact block is connected.

All through the detachable connection of screw thread between telescopic link, head rod, upper end contact piece, second connecting rod and the lower extreme contact piece.

Compared with the prior art, the method has the following beneficial effects:

(1) The lower surface of the upper contact block of the utility model is provided with a trumpet-shaped guide port, the top of the guide port is communicated with a placing hole, and a contact conductive block is arranged in the placing hole; can be fast, accurate when using introduce the most advanced of lightning rod to place downtheholely through the uide hole to make the most advanced and the contact conducting block contact of lightning rod, because the most advanced of lightning rod is located and places downtheholely, so the most advanced of lightning rod is difficult to break away from with the contact conducting block, has improved the stability that the device used.

(2) The utility model discloses be provided with the spring between contact conducting block and place the hole bottom, the spring can cushion the pressure of the lightning rod that contact conducting block received, prevents to produce strong collision between contact conducting block and the lightning rod pointed end, plays the effect of protection contact conducting block and lightning rod.

Additional features of the present application will be set forth in part in the description which follows. Additional features of some aspects of the present application will be apparent to those of ordinary skill in the art in view of the following description and accompanying drawings, or in view of the production or operation of the embodiments. The features disclosed in this application may be realized and attained by practice or use of various methods, instrumentalities and combinations of the specific embodiments described below.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. Like reference symbols in the various drawings indicate like elements. Wherein, the first and the second end of the pipe are connected with each other,

fig. 1 is a structural diagram of the present invention.

Fig. 2 is a sectional view of the upper contact block of the present invention.

Fig. 3 is a structural diagram of the lower contact block of the present invention.

Fig. 4 is a usage state diagram of the present invention.

The reference numbers in the above figures refer to: 1-telescopic link, 2-head rod, 3-upper end contact block, 4-wire, 5-second connecting rod, 6-lower extreme contact block, 7-upper end fixture block, 8-guide opening, 9-place the hole, 10-contact conducting block, 11-wire connecting post, 12-stopper, 13-wire terminal, 14-lightning rod, 15-insulating cushion, 16-wire joint, 17-spring.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that if the terms "first", "second", etc. are used in the description and claims of this application and in the above-described drawings, they are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, if the terms "comprise" and "have" and any variations thereof are referred to, it is intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, if the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", etc. are referred to, their indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

In addition, in this application, the terms "mounted," "disposed," "provided," "connected," "coupled," and the like should be construed broadly if they refer to one another. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Examples

As shown in fig. 1, the present embodiment discloses a resistance testing apparatus, which can be used to detect the resistance value of a lightning rod. The resistance testing device comprises a support, an upper end contact block 3 and a lower end contact block 6 which are respectively arranged at the upper end and the lower end of the support, and a detector which is respectively and electrically connected with the upper end contact block 3 and the lower end contact block 6 through wires 4.

The support comprises a telescopic rod 1, a first connecting rod 2 and a second connecting rod 5. The one end of head rod 2 and second connecting rod 5 all passes through the screw thread and is connected with telescopic link 1 is detachable, and the other end of head rod 2 then is connected with upper end contact block 3 through the screw thread, and the other end of second connecting rod 5 then is connected with lower extreme contact block 6 through the screw thread, and consequently, the resistance testing device of this embodiment can be dismantled when not using and accomodate.

This telescopic link 1 can stretch out and draw back, and it can adopt current technique to realize, and telescopic link 1 includes outer pole usually, the interior pole of cover in the outer pole to and the retaining member that is used for locking outer pole and interior pole. Because telescopic link 1 uses more in the life, all have the application like mop, clothes-horse etc., it only need play flexible function in this application can, do not do this and give unnecessary details.

In addition, as in the prior art, the detector in the embodiment can also be realized by adopting a zinc oxide arrester live tester with the model of HZ-20A.

In order to solve the technical problems mentioned in the present application, as shown in fig. 2, the lower surface of the upper contact block 3 is provided with a guide opening 8 with a large lower part and a horn-shaped upper part, the top of the guide opening 8 is communicated with a placing hole 9, and a contact conductive block 10 is installed in the placing hole 9. The contact conductive piece 10 is electrically connected to the measuring apparatus through a wire 4.

A wire connecting column 11 is connected to the contact conductive block 10, the upper end of the wire connecting column 11 penetrates out of the placing hole 9, a clamping groove is formed in the top of the wire connecting column 11, and the end of the wire 4 is connected with a wire terminal 13. When the lead terminal is connected, the lead terminal 13 is clamped into the clamping groove at the top of the lead connecting column 11 and is locked by the bolt and the nut, so that the contact conductive block 10 is electrically connected with the lead 4. When not needing to detect, can loosen bolt and nut, extract wire terminal 13 from the draw-in groove and can make whole upper end contact block 3 and wire 4 separation, conveniently accomodate.

In addition, the diameter of the contact conductive piece 10 is smaller than that of the placement hole 9, so that the contact conductive piece 10 can move up and down in the placement hole 9. Correspondingly, the upper end of the wire connecting column 11 is provided with a limiting block 12, the limiting block 12 is positioned above the upper contact block 3, and the contact conductive block 10 can be prevented from being separated from the placing hole 9 by the limiting effect of the limiting block 12.

Further, a spring 17 is provided between the upper surface of the contact conductive piece 10 and the bottom of the placing hole 9. The spring 17 can buffer the pressure of the lightning rod 14 on the contact conductive block 10, prevent the contact conductive block 10 from colliding with the tip of the lightning rod 14, and protect the contact conductive block 10 and the lightning rod 14.

As shown in fig. 3, the lower end contact block 6 is provided with an arc-shaped bayonet, and the lower end contact block 6 can be better matched with the surface of the lightning rod 14 by the arc-shaped bayonet, so that the lower end contact block 6 is ensured to be stably contacted with the lightning rod 14.

In addition, the bottom of the lower end contact block 6 is provided with an insulating cushion block 15, and when the lower end contact block 6 contacts the lower end of the lightning rod 14, the insulating cushion block 15 can prevent the lower end contact block 6 from contacting the ground to influence the detection precision.

The lower contact block 6 is detachably connected with the lead 4 through a lead joint 16 on the lower contact block, and the connection mode of the lower contact block is the same as that of the lead connecting column 11 and the lead 4, namely, the lower contact block is also connected with the lead terminal 13 through a clamping groove.

The holder and the upper contact block 3 in this embodiment can be made of insulating plastic, and the contact block 6, the wire connector 16, the contact conductive block 10, the wire connecting post 11 and other parts that need to form a circuit are made of conductive metal, such as copper.

In addition, a sliding groove can be formed in the telescopic rod 1, the first connecting rod 2 and the second connecting rod 5 are installed in the sliding groove and can slide in the sliding groove, and therefore the positions of the upper end contact block 3 and the lower end contact block 6 can be adjusted, and the requirements for detecting different parts of the lightning rod 14 are met. Correspondingly, the first connecting rod 2 and the second connecting rod 5 can be locked and fixed with the telescopic rod 1 through locking bolts.

When the resistance value from the tip of the lightning rod 14 to the bottom needs to be detected, the height of the telescopic rod 1 is adjusted, the device is lifted upwards, the tip of the lightning rod 14 is located below the upper-end contact block 3, then the device is placed downwards, and under the guide of the guide opening 8, the tip of the lightning rod 14 enters the placing hole 9 along the guide opening 8 and is in contact with the contact conductive block 10. The arc-shaped bayonet of the lower end contact block 6 is clamped at the lower end of the lightning rod 14, as shown in fig. 4, the detector is powered on at the moment, and the resistance value of the lightning rod 14 can be obtained through the ratio of the voltage to the current. Before use, the present apparatus initializes the resistance of the removable contact block 6, the contact conductive block 10, and the like, and detects only the resistance of the lightning rod 14.

As another preferable scheme, the end of the upper contact block 3 far away from the bracket can be further provided with an upper clamping block 7, and the upper clamping block 7 is also provided with a wire connector 16 and an arc-shaped bayonet. This upper end fixture block 7 can contact with the lateral wall of lightning rod, improves the suitability of this application. When the upper end fixture block 7 is needed, the lead 4 connected to the lead connecting post 11 can be moved to the lead joint 16 of the upper end fixture block 7.

It should be noted that all of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.

In addition, the above embodiments are exemplary, and those skilled in the art can devise various solutions in light of the disclosure, which are also within the scope of the disclosure and the protection scope of the present invention. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. A resistance testing device comprises a bracket, an upper end contact block (3) and a lower end contact block (6) which are respectively arranged at the upper end and the lower end of the bracket, and a detector which is respectively and electrically connected with the upper end contact block (3) and the lower end contact block (6) through a lead (4); the device is characterized in that a horn-shaped guide opening (8) is formed in the lower surface of the upper end contact block (3), a placing hole (9) is communicated with the top of the guide opening (8), and a contact conductive block (10) is arranged in the placing hole (9); the contact conductive block (10) is electrically connected with the detector through a lead (4).

2. The resistance testing device according to claim 1, wherein a lead connecting post (11) is connected to the contact conductive block (10), and the upper end of the lead connecting post (11) is detachably connected to the lead (4) after penetrating through the placing hole (9).

3. The resistance testing device according to claim 2, wherein the diameter of the contacting conductive block (10) is smaller than the diameter of the placing hole (9) so that the contacting conductive block (10) can move up and down within the placing hole (9); the lead connecting column (11) is provided with a limiting block (12) for preventing the contact conductive block (10) from being separated from the placing hole (9).

4. The resistance testing device according to claim 3, wherein a spring (17) is provided between the upper surface of the contact conductive block (10) and the bottom of the placement hole (9).

5. The resistance testing device according to claim 1, wherein an upper end fixture block (7) is arranged at one end of the upper end contact block (3) far away from the bracket, and a lead connector (16) is arranged on the upper end fixture block (7).

6. The electrical resistance testing device according to claim 5, wherein the upper end fixture block (7) is provided with an arc-shaped bayonet.

7. The resistance testing device according to claim 1, characterized in that the lower end contact block (6) is provided with an arc bayonet, and the bottom of the lower end contact block is provided with an insulating cushion block (15); the lower end contact block (6) is detachably connected with the lead (4) through a lead joint (16) on the lower end contact block.

8. The resistance testing device according to claim 1, characterized in that the holder comprises a telescopic rod (1), which telescopic rod (1) is connected with the upper end contact block (3) by a first connecting rod (2), and that the telescopic rod (1) is further connected with the lower end contact block (6) by a second connecting rod (5).

9. The resistance testing device according to claim 8, wherein the telescopic rod (1), the first connecting rod (2), the upper contact block (3), the second connecting rod (5) and the lower contact block (6) are detachably connected through threads.