Clamp type grounding resistance measuring instrument

Abstract

The utility model relates to the technical field of resistance measuring instruments, in particular to a clamp type grounding resistance measuring instrument. Comprising a measuring instrument main body, a liquid crystal display screen arranged on the measuring instrument main body, a detection jaw arranged at the upper end of the measuring instrument main body, a trigger arranged at the detection jaw and used for controlling opening and closing of the detection jaw, and a button arranged on the measuring instrument main body and used for controlling detection of the detection jaw. One surface, far away from the liquid crystal display screen, of the measuring instrument main body is provided with the storage structure for storing the standard resistance ring, so that when a maintainer needs to carry the clamp-type grounding resistance measuring instrument, the maintainer only needs to open the storage structure, place the standard resistance ring in the storage structure and then close the storage structure; therefore, a maintainer can place the clamp-type grounding resistance measuring instrument into the tool box of the maintenance tool, so that the standard resistance rings are not scattered in the tool box and are not easy to find, and the maintainer can carry the clamp-type grounding resistance measuring instrument conveniently.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of resistance measuring instrument, in particular to a clamp-on grounding resistance measuring instrument. BACKGROUND

[0002] The clamp-on grounding resistance measuring instrument is a kind of instrument for measuring the grounding system with loop, without disconnecting the grounding down lead, without auxiliary electrode resistance measuring instrument, safe, fast and easy to use.

[0003] The prior art clamp-on grounding resistance measuring instrument is usually equipped with a standard resistance ring for detecting the accuracy of the clamp-on grounding resistance measuring instrument after each start-up, but the standard resistance ring also causes the clamp-on grounding resistance measuring instrument to be placed in a separate placement box during transportation, making it very inconvenient for maintenance personnel to carry maintenance tools and the clamp-on grounding resistance measuring instrument at the same time. The utility model discloses a clamp-on grounding resistance measuring instrument convenient for maintenance personnel to carry.

[0004] In view of the deficiencies in the prior art, the present application aims to provide a clamp-on grounding resistance measuring instrument to solve the technical problem of inconvenient carrying of the standard resistance ring of the clamp-on grounding resistance measuring instrument in the prior art.

[0005] The above-mentioned purpose of the present application is realized by the following technical scheme: a clamp-on grounding resistance measuring instrument, comprising a measuring instrument main body, a liquid crystal display screen arranged on the measuring instrument main body, a detection jaw arranged at the upper end of the measuring instrument main body, a trigger arranged at the detection jaw for controlling the opening and closing of the detection jaw, and a control button arranged on the measuring instrument main body for controlling the detection of the detection jaw, wherein one side of the measuring instrument main body away from the liquid crystal display screen is provided with a storage structure for storing a standard resistance ring.

[0006] Further, the storage structure comprises a storage groove opened in one side of the measuring instrument main body away from the liquid crystal display screen, plug-in interfaces opened in the two sides inside the storage groove and arranged oppositely, and a baffle for blocking the storage groove, wherein the two sides of the baffle are provided with a limiting structure for fixing the baffle through the plug-in interfaces.

[0007] Further, the limiting structure comprises a limiting notch opened in the two sides of the baffle, an L-shaped limiting strip slidingly connected in the limiting notch, and a supporting spring for pushing the limiting strip to insert into the plug-in interface, wherein one end of the limiting strip faces the plug-in interface, and the other end extends away from the storage groove, and one end of the supporting spring is fixedly connected to the side wall of the limiting notch, and the other end is fixedly connected to the limiting strip.

[0008] By adopting the above technical scheme, when the maintenance personnel need to carry the clamp-type grounding resistance measuring instrument, only need to push two limit bars to compress the supporting spring, so that the limit bar is retracted and separated from the plug-in interface, then take out the baffle, then place the standard resistance ring to be used in the storage groove, then push two limit bars to compress the supporting spring, so that the limit bar is retracted, then put the baffle into the storage groove, loosen the limit bar, and the supporting spring is inserted into the plug-in interface against the limit bar, so that the maintenance personnel can put the clamp-type grounding resistance measuring instrument into the tool box of the maintenance tool, so that the standard resistance ring cannot be scattered in the tool box and is not easy to find, so that the maintenance personnel can conveniently carry the clamp-type grounding resistance measuring instrument.

[0009] Further, the storage groove is provided with a pushing structure for facilitating taking out the standard resistance ring.

[0010] Further, the pushing structure comprises a bearing plate for bearing the standard resistance ring and a supporting spring in the storage groove for pushing the bearing plate out of the storage groove, one end of the supporting spring is fixedly connected to the inner wall of the storage groove, and the other end is fixedly connected to the bearing plate.

[0011] By adopting the above technical scheme, although the storage groove is provided to facilitate the maintenance personnel to carry the clamp-type grounding resistance measuring instrument, when the maintenance personnel takes out the standard resistance ring in the storage groove, the standard resistance ring may be stuck in the storage groove, which makes it difficult to take out the standard resistance ring, and the pushing structure solves this technical problem. By the arrangement of the pushing structure, after the staff opens the baffle, the supporting spring pushes the bearing plate out of the storage groove, so that the bearing plate pushes the standard resistance ring out of the storage groove, thereby preventing the standard resistance ring from being stuck in the storage groove, and making it easier to take out the standard resistance ring.

[0012] Further, the storage groove is provided with a limiting structure for limiting the pushing force of the pushing structure.

[0013] Further, the limiting structure comprises a limiting sliding groove opened on both sides of the storage groove and a limiting rod fixedly arranged on both sides of the bearing plate and extending into the limiting sliding groove.

[0014] By adopting the technical scheme, although the push structure is arranged to make the standard resistance ring more easily taken out, when the maintenance personnel takes down the baffle, the pushing force of the supporting top spring can cause the standard resistance ring to be directly and quickly pushed out, which can cause the maintenance personnel to be unable to react in time, so that the standard resistance ring falls on the ground, although the single standard resistance ring falling on the ground has little influence, but if a plurality of standard resistance rings with different resistances are placed in the storage groove, it is more troublesome to clean up, and the limiting structure solves the technical problem, after the supporting top spring pushes the bearing plate to move a certain distance, the limiting rod abuts against the inner wall of the limiting sliding groove, so that the pushing force of the supporting top spring is not so large, and the standard resistance ring is prevented from being directly and quickly pushed out.

[0015] Further, the inner wall of the limiting sliding groove is fixedly provided with extruded rubber, and the extruded rubber is attached to the side wall of the limiting rod.

[0016] By adopting the technical scheme, the setting of the extruded rubber further slows down the moving speed of the bearing plate after being pushed by the supporting top spring, and further prevents the standard resistance ring from being directly and quickly pushed out.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] By arranging the storage structure and the limiting structure, when the maintenance personnel needs to carry the pincer-type grounding resistance measuring instrument, only the two limiting strips need to be pushed to compress the supporting spring, so that the limiting strip is retracted and separated from the plug-in interface, then the baffle is taken out, and then the standard resistance ring to be used is placed in the storage groove, then the two limiting strips are compressed to make the limiting strip retract, and then the baffle is placed in the storage groove, the limiting strip is loosened, and the supporting spring is inserted into the plug-in interface, so that the maintenance personnel can put the pincer-type grounding resistance measuring instrument into the tool box of the maintenance tool, so that the standard resistance ring cannot be scattered in the tool box and is not easy to find, thereby achieving the purpose of facilitating the maintenance personnel to carry the pincer-type grounding resistance measuring instrument. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the embodiment;

[0020] Figure 2 is Figure 1 is an enlarged view of part A in FIG. 4;

[0021] Figure 3 is Figure 1 is a schematic diagram of the structure in which the baffle is hidden;

[0022] Figure 4 is Figure 3 is a schematic diagram of the structure in which the bearing plate is hidden;

[0023] Figure 5is Figure 3 Enlarged view of middle B part.

[0024] Reference signs: 1, measuring instrument main body; 2, storage structure; 20, storage groove; 21, plug-in interface; 22, baffle; 3, limiting structure; 30, limiting notch; 31, limiting strip; 32, supporting spring; 4, bearing plate; 40, supporting top spring; 5, limiting structure; 50, limiting sliding groove; 51, limiting rod; 52, extruded rubber. DETAILED DESCRIPTION

[0025] The application will be further described in detail below with reference to the accompanying drawings.

[0026] Embodiment, refer to Figure 1 , Figure 2 , the clamp type grounding resistance measuring instrument, mainly by measuring instrument main body 1, liquid crystal display, detection jaw, trigger and control button these key components. Liquid crystal display is arranged on the front of measuring instrument main body 1, it is convenient for user to read the measurement result directly. And detection jaw is located on the upper end of measuring instrument main body 1, it is the key position for carrying out resistance detection, its opening and closing operation is controlled by trigger, user only needs to press gently, can complete the opening and closing of jaw, control button is used to start the detection function of detection jaw.

[0027] In addition, refer to Figure 3 And Figure 4 , on the side of measuring instrument main body 1 away from liquid crystal display, the embodiment is provided with the storage structure 2 for storing standard resistance ring. The storage structure 2 is composed of storage groove 20, plug-in interface 21, baffle 22 and limiting structure 3, which not only ensures the proper storage of standard resistance ring, but also facilitates the user to use.

[0028] Specifically, the storage groove 20 is opened in the back of measuring instrument main body 1, which provides a spacious storage space for standard resistance ring. The baffle 22 is used to block the storage groove 20 to prevent the standard resistance ring from falling, and the plug-in interface 21 is located inside the two sides of the storage groove 20 and cooperates with the limiting structure 3 arranged on the baffle 22 to ensure the stable installation of the baffle 22. The limiting structure 3 is composed of limiting notch 30, L-shaped limiting strip 31 and supporting spring 32. One end of the limiting strip 31 faces the plug-in interface 21, and the other end extends away from the storage groove 20. Such design not only ensures that the limiting strip 31 can be smoothly inserted into the plug-in interface 21, but also facilitates the user to operate the whole structure by pushing the limiting strip 31.

[0029] The support spring 32 is fixedly connected at one end to the side wall of the limiting notch 30 and at the other end to the limiting strip 31, thereby providing necessary elastic support for the movement of the limiting strip 31. When the maintenance personnel need to carry the pincer-type grounding resistance measuring instrument, they only need to simply push the two limiting strips 31 to compress the support spring 32 and retract from the plug-in interface 21, and then easily take out the baffle 22. Next, they can place the standard resistance ring to be used in the storage groove 20, and push the two limiting strips 31 again to retract. Then, the baffle 22 is placed in the storage groove 20 and the limiting strip 31 is loosened, at which time the support spring 32 automatically inserts into the plug-in interface 21 against the limiting strip 31, thereby ensuring the stable installation of the baffle 22.

[0030] Such a setting not only properly stores and stores the standard resistance ring, but also avoids the problem that it is scattered in the tool box of the maintenance tool and is not easy to find. At the same time, it also greatly facilitates the carrying and use of the maintenance personnel, so that they can be more efficient and convenient in the maintenance work.

[0031] Although the storage groove 20 is provided to facilitate the carrying of the pincer-type grounding resistance measuring instrument by the maintenance personnel, when the maintenance personnel take out the standard resistance ring in the storage groove 20, the standard resistance ring can be stuck in the storage groove 20, making it difficult to take out the standard resistance ring. In order to solve this technical problem, the embodiment is provided with a pushing structure in the storage groove 20 for facilitating the taking out of the standard resistance ring. The pushing structure includes a bearing plate 4 for bearing the standard resistance ring and a support top spring 40 in the storage groove 20 for pushing the bearing plate 4 to extend out of the storage groove 20. One end of the support top spring 40 is fixedly connected to the inner wall of the storage groove 20, and the other end is fixedly connected to the bearing plate 4. Through the setting of the pushing structure, after the staff opens the baffle 22, the support top spring 40 pushes the bearing plate 4 to extend out of the storage groove 20, so that the bearing plate 4 pushes the standard resistance ring out of the storage groove 20, thereby preventing the standard resistance ring from being stuck in the storage groove 20 and making it easier to take out the standard resistance ring.

[0032] Although the setting of the pushing structure makes it easier to take out the standard resistance ring, when the maintenance personnel take down the baffle 22, the pushing force of the support top spring 40 can cause the standard resistance ring to be quickly pushed out, which can cause the maintenance personnel to not react in time, so that the standard resistance ring falls to the ground. Although a single standard resistance ring falling to the ground has little effect, if multiple standard resistance rings of different resistances are placed in the storage groove 20, it is more troublesome to pick them up. In order to solve this technical problem, with reference to Figure 5The embodiment is provided with a limiting structure 5 for limiting the pushing force of the pushing structure in the receiving groove 20, the limiting structure 5 comprises limiting sliding grooves 50 opened on both sides of the inside of the receiving groove 20 and limiting rods 51 fixedly arranged on both sides of the bearing plate 4 and extending into the limiting sliding grooves 50, after the supporting top spring 40 pushes the bearing plate 4 to move a certain distance, the limiting rods 51 will abut to the inner wall of the limiting sliding grooves 50, so that the pushing force of the supporting top spring 40 is not so large, preventing the standard resistance ring from being directly pushed out quickly.

[0033] In the embodiment, the inner wall of the limiting sliding groove 50 is fixedly provided with extruded rubber 52, the extruded rubber 52 is attached to the side wall of the limiting rod, and the arrangement of the extruded rubber 52 further slows down the moving speed of the bearing plate 4 after being pushed by the supporting top spring 40, further preventing the standard resistance ring from being directly pushed out quickly.

[0034] Specific implementation process: when the maintenance personnel need to carry the clamp-type grounding resistance measuring instrument, only need to push two limiting strips 31 to compress the supporting spring 32, so that the limiting strip 31 shrinks and separates from the plug-in interface 21, then take out the baffle 22, and then place the standard resistance ring to be used in the receiving groove 20, so that it extrudes the bearing plate 4 to compress the supporting spring 32, and then push two limiting strips 31 to compress the supporting spring 32, so that the limiting strip 31 shrinks, and then put the baffle 22 into the receiving groove 20 to block the standard resistance ring, and then loosen the limiting strip 31, the supporting spring 32 pushes the limiting strip 31 into the plug-in interface 21, so that the maintenance personnel can put the clamp-type grounding resistance measuring instrument into the tool box of the maintenance tool.

[0035] When the standard resistance ring needs to be taken out, only need to push two limiting strips 31 to compress the supporting spring 32, so that the limiting strip 31 shrinks and separates from the plug-in interface 21, and then take out the baffle 22, because the arrangement of the extruded rubber 52 makes the supporting top spring 40 push the bearing plate 4 to move slowly, the standard resistance ring is pushed out of the receiving groove 20.

[0036] The embodiments of the specific implementation are the preferred embodiments of the application, not limited to the protection scope of the application, so: any equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A clamp-type grounding resistance measuring instrument, comprising a measuring instrument main body (1), a liquid crystal display screen arranged on the measuring instrument main body (1), a detection clamp arranged at the upper end of the measuring instrument main body (1), a trigger arranged at the detection clamp for controlling the opening and closing of the detection clamp, and a control button arranged on the measuring instrument main body (1) for controlling the detection of the detection clamp, characterized in that, The measuring instrument body (1) is provided with a receiving structure (2) for receiving a standard resistance ring on the side away from the liquid crystal display screen.

2. The clamp-on grounding resistance meter of claim 1, wherein, The receiving structure (2) comprises a receiving groove (20) formed on the side of the measuring instrument body (1) away from the liquid crystal display screen, plug-in interfaces (21) formed on the two sides of the receiving groove (20) and arranged oppositely, and a baffle (22) for blocking the receiving groove (20), the two sides of the baffle (22) are provided with a limiting structure (3) for fixing the baffle (22) through the plug-in interfaces (21).

3. The clamp-on grounding resistance meter of claim 2, wherein, The limiting structure (3) comprises limiting notches (30) formed on the two sides of the baffle (22), L-shaped limiting strips (31) slidingly connected in the limiting notches (30), and supporting springs (32) for pushing the limiting strips (31) to insert into the plug-in interfaces (21), one end of the limiting strip (31) faces the plug-in interface (21), the other end extends away from the receiving groove (20), one end of the supporting spring (32) is fixedly connected to the side wall of the limiting notch (30), and the other end is fixedly connected to the limiting strip (31).

4. The clamp-on grounding resistance meter of claim 2, wherein, The receiving groove (20) is provided with a pushing structure for facilitating the removal of the standard resistance ring.

5. The clamp-on ground resistance meter of claim 4, wherein, The pushing structure comprises a bearing plate (4) for bearing the standard resistance ring and a supporting top spring (40) in the receiving groove (20) for pushing the bearing plate (4) to extend out of the receiving groove (20), one end of the supporting top spring (40) is fixedly connected to the inner wall of the receiving groove (20), and the other end is fixedly connected to the bearing plate (4).

6. The clamp-on grounding resistance meter of claim 4, wherein, The receiving groove (20) is provided with a limiting structure (5) for limiting the pushing force of the pushing structure.

7. The clamp-on grounding resistance meter of claim 6, wherein, The limiting structure (5) comprises limiting sliding grooves (50) formed on the two sides of the receiving groove (20) and limiting rods (51) fixedly arranged on the two sides of the bearing plate (4) and extending into the limiting sliding grooves (50).

8. The clamp-on ground resistance meter of claim 7, wherein, The inner wall of the limiting sliding groove (50) is fixedly provided with an extruded rubber (52), and the extruded rubber (52) is attached to the side wall of the limiting rod.

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