Portable low-voltage grounding wire clamp

Abstract

The utility model relates to a portable low-voltage grounding wire clamp in the technical field of electric power tools, which comprises an insulating rod, a metal probe, an upper metal clamping piece, a lower metal clamping piece, an electromagnetic locking device and an audible and visual alarm. Or the grounding lead is conducted with the ground through the upper and lower metal clamps; when the to-be-detected conductor is electrified, the audible and visual alarm gives an audible and visual alarm, and the electromagnetic locking device locks the insulating rod, so that an accident that the to-be-detected conductor is electrified to hang a ground wire is avoided; if the to-be-tested conductor is not electrified, the electromagnetic locking device is opened, the upper and lower metal clamping pieces clamp the to-be-tested conductor under the action of the spring, and conductor grounding is realized. The grounding wire clamp has the functions of live-line sound-light alarm and live-line locking, solves the problem that the conventional grounding wire clamp lacks the functions of warning and locking when being in contact with a live-line conductor, is simple in structure, convenient to operate and high in safety, and reliably guarantees the safety of operators and equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric power tools, specifically relates to a portable low voltage ground wire clamp. BACKGROUND

[0002] In the technical field of electric power tools, the ground wire clamp is the key device to ensure the safe grounding of electric power equipment, and is crucial to the stable operation of the electric power system and the safety of maintenance personnel. However, the traditional ground wire clamp has some deficiencies in the process of use. Specifically, the existing ground wire clamp can normally realize the grounding function under the condition that the electric power equipment is not electrified, but lacks effective measures to prevent the electrified electric power equipment from connecting the ground wire under the condition that the electric power equipment is electrified, which easily leads to the connection of the electrified electric power equipment and the ground wire by the operator without knowing, and further causes serious safety accidents. Based on this, the utility model provides a portable low voltage ground wire clamp. SUMMARY

[0003] The utility model aims at the technical problem in the background art, and provides a portable low voltage ground wire clamp.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A portable low voltage ground wire clamp, comprising a center conductor insulated rod and a metal probe at the top end thereof, the insulated rod is respectively connected with an upper metal clamp and a lower metal clamp on both sides to clamp the conductor to be measured, the metal probe is connected with the ground through the center conductor insulated rod, the upper metal clamp, the lower metal clamp and the ground wire, and the electromagnetic locking device comprises a metal rod winding a coil, a spring four is arranged at the rear end of the metal rod, and a clamping rod is fixed at the front end of the metal rod, the clamping rod of the metal rod can be inserted into the clamping groove on the center conductor insulated rod to play a locking role.

[0006] Preferably, the upper recess and the lower recess are formed in the insulated rod, and the protruding clamping piece one arranged on the upper metal clamp and the protruding clamping piece two arranged on the lower metal clamp can be respectively matched and inserted into the upper recess and the lower recess.

[0007] By adopting the above technical scheme, the conductor to be measured can be clamped or loosened.

[0008] Preferably, the connection line of the center conductor insulated rod, the electromagnetic locking device and the sound and light alarm is wrapped with a shielding wire.

[0009] By adopting the above technical scheme, the electromagnetic interference can be reduced, and the accuracy of the use function of the electromagnetic locking device can be ensured.

[0010] Preferably, the metal probe is a telescopic structure.

[0011] By adopting the technical scheme, different sizes of the conductor to be measured can be adapted.

[0012] Preferably, the sound-light alarm comprises a buzzer and a light-emitting diode, the buzzer emits a sound alarm, and the light-emitting diode emits a light alarm.

[0013] By adopting the technical scheme, the operator can be reminded, and the accident of connecting the conductor to the ground clamp when the conductor is live can be avoided.

[0014] Preferably, a bottom plate is further included, and the insulating rod is fixed in a limiting groove arranged on the bottom plate.

[0015] By adopting the technical scheme, the shape of the limiting groove arranged on the bottom plate matches the outer peripheral shape of the insulating rod, and the two can be well used in cooperation.

[0016] Preferably, the clamping parts of the upper metal clamp and the lower metal clamp are provided with anti-skid lines.

[0017] By adopting the technical scheme, the friction with the conductor to be measured is increased, and the clamping effect is ensured.

[0018] Preferably, the ground wire is made of soft copper wire.

[0019] By adopting the technical scheme, the conductivity and flexibility are improved.

[0020] Preferably, the outer surface of the insulating rod is provided with anti-skid lines.

[0021] By adopting the technical scheme, the operator can hold conveniently.

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] 1. Simple structure, convenient operation: the structure design is simple and reasonable, and the operation is simple, the work efficiency is improved, and the labor intensity of the operator is reduced.

[0024] 2. High safety: through the sound-light alarm and electromagnetic locking double protection mechanism, the safety of grounding operation is greatly improved, and the safety of the operator and equipment is ensured.

[0025] 3. With live sound-light alarm function: when the live conductor is contacted, the sound-light alarm emits a sound-light alarm, and timely reminds the operator to avoid misoperation.

[0026] 4. With live locking function: the electromagnetic locking device locks the insulating rod when the conductor is live, and effectively avoids the occurrence of the live ground wire hanging accident. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0028] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0029] Figure 2 It is a schematic diagram of the structure of the electromagnetic locking device in the present application.

[0030] Reference signs: 1, metal probe; 2, center conductor insulated rod; 201, upper groove; 202, lower groove; 203, clamping groove; 301, upper metal clamping piece; 302, lower metal clamping piece; 303, protruding clamping piece one; 304, protruding clamping piece two; 305, spring one; 306, spring two; 4, grounding wire; 5, spring three; 6, electromagnetic locking device; 601, metal rod; 602, spring four; 603, winding coil; 604, clamping rod; 7, insulated rod; 8, audible and visual alarm; 9, bottom plate; 10, buzzer; 11, light emitting diode. DETAILED DESCRIPTION

[0031] The drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Figures 1-2 The present application will be described in further detail.

[0032] Please refer to the drawings of the specification Figure 1The utility model provides a kind of portable low voltage ground wire clamp of an embodiment: a kind of portable low voltage ground wire clamp, including metal probe 1 being located above bottom plate, center conductor's insulating rod 2, upper metal clamp piece 301, lower metal clamp piece 302, electromagnetic locking device 6, insulating rod 7, audible and visual alarm 8, metal probe 1 is located center conductor's insulating rod 2 front end, insulating rod is sequentially provided with upper groove 201, lower groove 202 and clamping groove 203 from front to back, upper metal clamp piece 301 and lower metal clamp piece 302 are respectively threaded on the upper and lower sides of center conductor's insulating rod 2 and can be clamped to be measured conductor, upper metal clamp piece 301, lower metal clamp piece 302 end is respectively provided with spring one 305, spring two 306, the protruding clamping piece one 303 and protruding clamping piece two 304 being arranged in the middle of upper metal clamp piece 301,lower metal clamp piece 302 can be correspondingly clamped with the upper groove 201 of insulating rod, lower groove 202.Electromagnetic locking device 6 is connected to the right side of bottom plate 9 upper side, insulating rod 7 is fixed in the right side lower side of bottom plate 9, audible and visual alarm 8 is installed in the position of bottom plate front side right lower corner.When to be measured conductor is electrified, metal probe 1, center conductor's insulating rod 2, electromagnetic locking device 6, audible and visual alarm 8 form passage;When to be measured conductor is not electrified, metal probe 1, center conductor's insulating rod 2, upper metal clamp piece 301, lower metal clamp piece 302 and ground wire 4 form passage.

[0033] Specific working principle is: in use process, operator first pulls up upper metal clamp piece 301 and pulls down lower metal clamp piece 302, so that the protruding clamping piece one 303 being fixed on upper metal clamp piece 301 and the protruding clamping piece two 304 being fixed on lower metal clamp piece 302 can be respectively clamped in the upper side and the lower side of center conductor's insulating rod 2, and spring one 305 cannot pass through the lower side of bottom plate 9, and spring two 306 also cannot pass through the upper side of bottom plate 9, in this process, spring one 305 and spring two 306 are compressed and have elastic potential energy, and make upper metal clamp piece 301 and lower metal clamp piece 302 keep a certain distance with to be measured conductor.

[0034] Protruding clamping piece one 303 and protruding clamping piece two 304 being fixed on lower metal clamp piece 302 can be respectively clamped in the upper side and the lower side of center conductor's insulating rod 2, and spring one 305 cannot pass through the lower side of bottom plate 9, and spring two 306 also cannot pass through the upper side of bottom plate 9, in this process, spring one 305 and spring two 306 are compressed and have elastic potential energy, and make upper metal clamp piece 301 and lower metal clamp piece 302 keep a certain distance with to be measured conductor.

[0035] When the conductor is electrified, the metal probe 1, the insulating rod of the center conductor, the electromagnetic locking device 6, and the audible and visual alarm 8 form a path. The audible and visual alarm 8 emits an audible and visual alarm to remind the operator that the conductor is electrified. The metal rod 601 is affected by magnetic force under the action of electrifying the winding coil 603, drives the metal rod 601 to drive the spring four 602 and the clamping rod 604 downward, at this time the spring four is stretched to have elastic potential, so that the clamping rod 604 is inserted into the clamping groove 203, the insulating rod cannot move back and forth, thereby realizing the electrification locking of the electromagnetic locking device 6. After the electromagnetic locking device 6 is electrified and locked, because the clamping rod 604 is inserted into the clamping groove 203, the insulating rod of the center conductor cannot move in the bottom plate 9, which causes the upper groove 201 and the lower groove 202 to be unable to move to the positions of the protruding clamping piece one 303 and the protruding clamping piece two 304, which cannot make the protruding clamping piece one 303 and the protruding clamping piece two 304 fall into the upper groove 201 and the lower groove 202, and further cannot make the spring one 305 and the spring two 306 release the already possessed elastic potential to drive the upper metal clamping piece 301 and the lower metal clamping piece 302 to connect the conductor to be tested to realize the grounding of the conductor to be tested.

[0036] When the conductor is not electrified, the metal probe 1, the insulating rod of the center conductor, the upper metal clamping piece 301, the lower metal clamping piece 302, and the grounding wire 4 form a path. The winding coil 603 is de-energized, the metal rod 601 is not affected by magnetic force, and drives the clamping rod 604 to return to the original position under the action of the spring four 602, so that the clamping rod 604 is away from the clamping groove 203, thereby realizing the de-energization unlocking of the electromagnetic locking device 6. Because the clamping rod 604 is not inserted into the clamping groove 203, the operator can move the insulating rod of the center conductor, which makes the upper groove 201 and the lower groove 202 move to the positions of the protruding clamping piece one 303 and the protruding clamping piece two 304, so that the protruding clamping piece one 303 and the protruding clamping piece two 304 can fall into the upper groove 201 and the lower groove 202, and further can make the spring one 305 and the spring two 306 release the already possessed elastic potential to drive the upper metal clamping piece 301 and the lower metal clamping piece 302 to connect the conductor to be tested to realize the grounding of the conductor to be tested.

[0037] The above only describes the preferred embodiments of the present application, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the concept of the present application, and these improvements and refinements should also be regarded as being within the protection scope of the present application.

Claims

1. A portable low-voltage grounding clamp, comprising a center conductor insulated rod (2) and a metal probe (1) at the top end of the center conductor insulated rod (2), the center conductor insulated rod (2) is provided with an upper metal clamp (301) and a lower metal clamp (302) on both sides respectively, used for clamping a conductor to be tested, and the metal probe (1) is in conductive connection with the ground through the center conductor insulated rod (2), the upper metal clamp (301), the lower metal clamp (302) and a grounding wire (4), characterized in that: The electromagnetic locking device (6) comprises a metal rod (601) winding around a coil (603), the rear end of the metal rod (601) winding around a spring (603), and the front end of the metal rod (601) fixedly clamping a stick (604), the stick (604) of the metal rod (601) being capable of being inserted into a clamping groove (203) on the center conductor insulating rod (2) to play a locking role. ​ 2. The portable low voltage ground clamp of claim 1, wherein: The center conductor insulating rod (2) is provided with an upper groove (201) and a lower groove (202), a protruding clamping piece one (303) arranged on the upper metal clamping piece (301) and a protruding clamping piece two (304) arranged on the lower metal clamping piece (302) being capable of being respectively inserted into the upper groove (201) and the lower groove (202) to realize clamping or loosening of the conductor to be measured.

3. The portable low voltage ground clamp of claim 1, wherein: The connecting line of the center conductor insulating rod (2), the electromagnetic locking device (6) and the audible and visual alarm (8) is wrapped with a shielding wire to reduce electromagnetic interference.

4. The portable low voltage ground clamp of claim 1, wherein: The metal probe (1) is of a telescopic structure to adapt to different sizes of the conductor to be measured.

5. The portable low voltage ground clamp of claim 1, wherein: The audible and visual alarm (8) comprises a buzzer (10) and a light emitting diode (11), the buzzer (10) emitting a sound alarm, and the light emitting diode (11) emitting a light alarm.

6. The portable low voltage ground clamp of claim 1, wherein: A bottom plate (9) is further provided, and the insulating rod is fixedly arranged in a limiting groove arranged on the bottom plate.

7. The portable low voltage ground clamp of claim 1, wherein: The clamping parts of the upper metal clamping piece (301) and the lower metal clamping piece (302) are provided with anti-skid lines to increase the friction with the conductor to be measured and ensure the clamping effect.

8. The portable low voltage ground clamp of claim 1, wherein: The grounding wire (4) is made of a plurality of soft copper wires to improve the conductivity and flexibility.

9. The portable low voltage ground clamp of claim 1, wherein: The outer surface of the insulating rod (7) is provided with anti-skid lines to facilitate the operator to hold.

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