Grounding structure for pole-mounted circuit breaker detection equipment

Abstract

The utility model relates to the technical field of circuit breakers, and discloses a grounding structure for pole-mounted circuit breaker detection equipment, which comprises a rack and a control mechanism arranged on the rack, and is characterized in that the control mechanism is used for controlling a shell of a pole-mounted circuit breaker to be grounded or not to be grounded, and the control mechanism comprises a conductive seat, a conductive pole and a power piece; the power piece is connected to one end, far away from the conductive seat, of the conductive column, the conductive column can be in contact with or separated from the conductive seat under the action of the power piece, the conductive column is grounded, a shell of the pole-mounted circuit breaker is electrically connected with a grounding piece, and the grounding piece is electrically connected with the conductive seat. Contact or separation of the conductive column and the conductive base is controlled through the power piece, switching of grounding or non-grounding of the shell of the pole-mounted circuit breaker is achieved, the shell does not need to be manually grounded or non-grounded by workers, the efficiency of conducting a withstand voltage test on the pole-mounted circuit breaker is improved, and manpower resources are saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit breakers, in particular to a grounding structure for a pole-mounted circuit breaker detection device. BACKGROUND

[0002] A pole-mounted circuit breaker is a device for sectionalizing and controlling a distribution line, which is usually installed on a power pole of the distribution line, and is used for sectionalizing and protecting the power grid, and can quickly isolate the fault line when a fault or problem is found.

[0003] In the related art, a pole-mounted circuit breaker generally includes three single-phase circuit breakers and a housing. The three single-phase circuit breakers each include an incoming line post and an outgoing line post. Before use, the pole-mounted circuit breaker needs to be subjected to various voltage withstand tests, such as voltage withstand tests between the incoming line post and the outgoing line post, voltage withstand tests between the incoming line posts of the phase circuit breakers, and voltage withstand tests between the incoming line posts of the phase circuit breakers and the housing.

[0004] Among them, the housing is not grounded when the voltage withstand tests between the incoming line post and the outgoing line post and the voltage withstand tests between the incoming line posts of the phase circuit breakers are performed, and the housing is grounded when the voltage withstand tests between the incoming line posts of the phase circuit breakers and the housing are performed. When the voltage withstand tests between the incoming line posts of the phase circuit breakers and the housing are performed, the housing is generally grounded by a wire. The housing is provided with a grounding socket, and the grounding socket is provided with a grounding plug connected with the wire. When the grounding plug is inserted into the grounding socket, the housing is grounded. When other voltage withstand tests are performed, the grounding plug needs to be pulled out of the grounding socket so that the housing is not grounded.

[0005] However, when the housing is grounded by the wire, the staff needs to manually and repeatedly plug and unplug the grounding plug, which results in low efficiency of voltage withstand tests, and thus needs to be improved. CONTENT OF THE UTILITY MODEL

[0006] In order to improve the voltage withstand test efficiency of the pole-mounted circuit breaker, the present application provides a grounding structure for a pole-mounted circuit breaker detection device.

[0007] The grounding structure for a pole-mounted circuit breaker detection device provided by the present application adopts the following technical scheme:

[0008] The grounding structure for a pole-mounted circuit breaker detection device includes a rack and a control mechanism arranged on the rack. The control mechanism is used to control the grounding or non-grounding of the housing of the pole-mounted circuit breaker. The control mechanism includes a conductive seat, a conductive post, and a power member. The power member is connected to one end of the conductive post away from the conductive seat. The conductive post can be in contact with or separated from the conductive seat under the action of the power member. The conductive post is grounded. The housing of the pole-mounted circuit breaker is electrically connected with a grounding member. The grounding member and the conductive seat are electrically connected.

[0009] By adopting the technical scheme, when the withstand voltage test between the incoming line column and the shell of each phase circuit breaker needs to be carried out, the power member controls the electrically-conductive column to contact the electrically-conductive seat, and since the electrically-conductive column is grounded, the electrically-conductive seat, the grounding member and the shell of the pole-mounted circuit breaker are all grounded, so that the withstand voltage test between the incoming line column and the shell of each phase circuit breaker is facilitated. When the withstand voltage test between the incoming line column and the outgoing line column, the withstand voltage test between the incoming line columns of each phase circuit breaker needs to be carried out, the power member controls the electrically-conductive column to be separated from the electrically-conductive seat, at which time the shell of the pole-mounted circuit breaker is not grounded, so that the withstand voltage test between the incoming line column and the outgoing line column and the withstand voltage test between the incoming line columns of each phase circuit breaker are facilitated. The power member controls the electrically-conductive column to contact or be separated from the electrically-conductive seat, so as to switch the grounding or non-grounding of the shell of the pole-mounted circuit breaker, without the need for workers to manually repeatedly plug and unplug the grounding plug, thereby improving the efficiency of the withstand voltage test and saving manpower.

[0010] Optionally, the power member comprises a push cylinder, a piston rod of the push cylinder is connected with the electrically-conductive column, and the push cylinder can push the electrically-conductive column towards the direction of approaching or moving away from the electrically-conductive seat.

[0011] By adopting the technical scheme, when the push cylinder pushes the electrically-conductive column to move towards the direction of approaching the electrically-conductive seat, the electrically-conductive column contacts and communicates with the electrically-conductive seat, so that the shell of the pole-mounted circuit breaker is grounded; when the push cylinder pushes the electrically-conductive column to move towards the direction of moving away from the electrically-conductive seat, the electrically-conductive column is separated from and disconnected from the electrically-conductive seat, at which time the shell of the pole-mounted circuit breaker is not grounded. The push cylinder realizes the communication and disconnection of the electrically-conductive column and the electrically-conductive seat, so that the grounding structure is simple in structure and convenient to operate in the withstand voltage test.

[0012] Optionally, a rotating motor for rotating the pole-mounted circuit breaker is arranged on the rack, an output shaft of the rotating motor is connected with the shell of the pole-mounted circuit breaker, the grounding member comprises a wiring portion and a connecting portion, a connecting hole in which the output shaft of the rotating motor abuts is arranged on the connecting portion, the output shaft of the rotating motor can rotate in the connecting hole, and the wiring portion is located on the side of the connecting portion away from the output shaft of the rotating motor.

[0013] By adopting the technical scheme, in the previous process of pressure test, the incoming line post and the outgoing line post of the pole-mounted circuit breaker are downward, and the incoming line post and the outgoing line post need to be upward during the pressure test, the rotating motor drives the pole-mounted circuit breaker to rotate, so that the positions of the incoming line post and the outgoing line post are adjustable, thereby facilitating installation and test. Compared with directly connecting the wire from the conductive seat to the shell of the pole-mounted circuit breaker, when the rotating motor drives the pole-mounted circuit breaker to rotate, the wire is connected between the conductive seat and the grounding member, and the grounding member does not rotate with the output shaft of the rotating motor, so the wire is not easy to be pulled and damaged, and the stability of the grounding mechanism is improved. When the output shaft of the rotating motor and the grounding member abut, compared with the side surface of the grounding member being in contact with the output shaft of the rotating motor, the contact area between the output shaft of the rotating motor and the connecting part is increased, and the contact between the rotating motor and the grounding member is more stable, thereby improving the stability of the shell grounding.

[0014] Optionally, the wiring part and the conductive seat are both provided with a wiring hole, and a fixing screw for fixing the wire is arranged in the wiring hole.

[0015] By adopting the technical scheme, when it is needed to connect the wire to the grounding member or the conductive seat, the fixing screw is only needed to be screwed into the wiring hole, the wire is pressed under the screw head, and finally the fixing screw is tightened. By the above-mentioned way, the wire is connected to the grounding member or the conductive seat, so that the wire connection is firm and not easy to fall off.

[0016] Optionally, the wiring part is provided with a pressing spring, the pressing spring is connected with a fixing block, the fixing block is connected to the rack, and the pressing spring can abut the grounding member in the direction close to the output shaft of the rotating motor.

[0017] By adopting the technical scheme, when the grounding member is connected with the output shaft of the rotating motor, the pressing spring can continuously abut the grounding member in the direction close to the output shaft of the rotating motor, so that the hole wall of the connecting hole is in closer contact with the output shaft of the rotating motor, thereby making the contact between the grounding member and the output shaft of the rotating motor good, and finally making the grounding effect of the shell of the pole-mounted circuit breaker good.

[0018] Optionally, a limiting hole is arranged on the fixing block, a fixing hole corresponding to the limiting hole is arranged on the wiring part, and the pressing spring is arranged in the limiting hole and the fixing hole.

[0019] By adopting the technical scheme, the fixing hole and the limiting hole can limit the pressing spring, so that the connection stability of the pressing spring with the fixing block and the wiring part is high, and the abutting effect of the pressing spring on the grounding member is good.

[0020] Optionally, the fixing block and the rack are detachably connected.

[0021] By adopting the technical scheme, when the elasticity of the compression spring is insufficient to support the grounding member, the fixed block can be first removed from the rack, then the compression spring is taken out of the limiting hole and the fixing hole, a new compression spring is put into the limiting hole, and finally the fixed block is reconnected to the rack and the new compression spring is inserted into the fixing hole. By replacing the compression spring in the above manner, the operation is simple, and when the compression spring is damaged, the entire grounding mechanism does not need to be replaced, thereby saving resources.

[0022] Optionally, the fixed block is provided with a mounting hole, the rack is provided with a connecting screw hole, and a fixing bolt is threadedly connected in the mounting hole and the connecting screw hole.

[0023] By adopting the technical scheme, when the fixed block needs to be connected to the rack, the mounting hole is only needed to be aligned with the connecting screw hole, and then the fixing bolt is screwed into the mounting hole and the connecting screw hole; when the fixed block needs to be removed, the fixing bolt is only needed to be removed from the mounting hole and the connecting screw hole. The above connection method is convenient to operate, and the connection strength of the fixed block and the rack is high.

[0024] Optionally, the conductive seat is provided with a connecting hole for the conductive column to extend into.

[0025] By adopting the technical scheme, when the conductive column is in contact with the conductive seat, the conductive column extends into the connecting hole. Compared with the case that the conductive column only contacts one side surface of the conductive seat, the contact area between the conductive column and the hole wall of the connecting hole is larger, so that the contact and communication effect of the conductive column and the conductive seat is good, and the shell grounding effect of the pole-mounted circuit breaker is good.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. By pushing the air cylinder to drive the conductive column to move towards or away from the conductive seat, the grounding or non-grounding of the shell of the pole-mounted circuit breaker is switched, without the need for manual repeated plugging and unplugging of the grounding plug and socket, thereby improving the efficiency of various voltage withstand tests;

[0028] 2. The compression spring connected between the grounding member and the fixed block can abut the grounding member against the output shaft of the rotating motor, so that the output shaft of the rotating motor is more tightly abutted with the grounding member, and the shell grounding effect of the pole-mounted circuit breaker is good;

[0029] 3. The fixed block is detachably connected to the rack by the fixing bolt, so that when the compression spring is damaged, a new compression spring can be replaced, which is simple to operate and saves resources. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the overall structure diagram of embodiment 1 of the present application.

[0031] Figure 2 is a structural schematic diagram for showing the rotating motor in embodiment 1 of the present application.

[0032] Figure 3 is Figure 2 is an enlarged view of A in FIG.

[0033] Figure 4 is a sectional schematic diagram of embodiment 1 of the present application.

[0034] Figure 5 is Figure 4 is an enlarged view of B in FIG.

[0035] Figure 6 is a sectional schematic diagram for showing the fixing hole in embodiment 1 of the present application.

[0036] Figure 7 is Figure 6 is an enlarged view of C in FIG.

[0037] Figure 8 is a sectional schematic diagram for showing the conductive seat in embodiment 1 of the present application.

[0038] Figure 9 is Figure 8 is an enlarged view of D in FIG.

[0039] Figure 10 is a partial sectional schematic diagram of embodiment 2 of the present application.

[0040] Explanation of reference signs:

[0041] 1, frame; 2, rotating motor; 22, grounding member; 221, wiring part; 222, connecting part; 223, connecting hole; 224, fixing hole; 3, control mechanism; 31, conductive seat; 311, wiring hole; 312, connecting hole; 313, fixing screw; 32, conductive column; 33, power member; 331, pushing air cylinder; 4, fixing block; 41, mounting hole; 42, fixing bolt; 43, limiting hole; 44, pressing spring; 5, connecting screw hole. DETAILED DESCRIPTION

[0042] The following will be described in detail in combination with the accompanying Figures 1-10 The present application is further described in detail.

[0043] The embodiments of the present application disclose a grounding structure for pole-mounted circuit breaker detection equipment.

[0044] Embodiment 1

[0045] Reference Figure 1The utility model provides a ground structure for pole-mounted circuit breaker detection equipment, including frame 1, control mechanism 3 is arranged on frame 1, be provided with rotary motor 2 on frame 1, and one end of rotary motor 2 output shaft is connected with the shell of pole-mounted circuit breaker, is used for controlling pole-mounted circuit breaker rotation, to facilitate installation and test.Control mechanism 3 is used to control the shell of pole-mounted circuit breaker to be grounded or not to be grounded to carry out various voltage-withstanding tests of pole-mounted circuit breaker.

[0046] With reference to Figure 2 and Figure 3 , the output shaft of rotary motor 2 is electrically connected with grounding piece 22, and the output shaft of rotary motor 2 and grounding piece 22 are both conductive, grounding piece 22 includes wiring part 221 and connecting part 222, wiring part 221 is located on the side, away from the output shaft of rotary motor 2, of connecting part 222, connecting hole 223 is formed in connecting part 222, the output shaft of rotary motor 2 abuts against the hole wall of connecting hole 223 and can rotate relative to the hole wall of connecting hole 223.

[0047] With reference to Figure 3 , Figure 4 and Figure 5 , the side, away from connecting part 222, of wiring part 221 is detachably connected with fixing block 4 on frame 1, mounting hole 41 is formed in fixing block 4, connecting screw hole 5 is formed in frame 1, and fixing bolt 42 is screw-connected in mounting hole 41 and connecting screw hole 5 in common. Fixing block 4 is detachably connected with frame 1 in the above manner, so that the connecting strength of fixing block 4 and frame 1 is high, and fixing block 4 is convenient to detach.

[0048] With reference to Figure 5 , Figure 6 and Figure 7 , limiting hole 43 is formed in fixing block 4, and fixing hole 224 corresponding to limiting hole 43 in number and one-to-one is formed in wiring part 221, the same compression spring 44 is arranged in limiting hole 43 and corresponding fixing hole 224, compression spring 44 can abut against grounding piece 22 towards the direction of the output shaft of rotary motor 2, so that the contact between the output shaft of rotary motor 2 and grounding piece 22 is more close, and the grounding effect of the shell of pole-mounted circuit breaker is good. In the embodiment, the number of limiting hole 43, fixing hole 224 and compression spring 44 is preferably two, and the specific number can be selected according to customer's demand in other cases.

[0049] With reference to Figure 7 , Figure 8 and Figure 9The control mechanism 3 comprises a conductive base 31, a conductive column 32 and a power member 33, the power member 33 comprises a push cylinder 331, a piston rod of the push cylinder 331 is connected with the conductive column 32, the conductive base 31 is located at a side of the conductive column 32 away from the push cylinder 331, and the push cylinder 331 can push the conductive column 32 towards the conductive base 31 or away from the conductive base 31, so as to make the conductive column 32 contact or separate from the conductive base 31. The conductive column 32 is connected with a wire to make the conductive column 32 grounded, the conductive base 31 and the wiring part 221 are connected with wires, the conductive base 31 and the wiring part 221 are both provided with wiring holes 311, and each wiring hole 311 is provided with a fixing screw 313 for fixing the wire. The fixing screw 313 can make the connection of the wire stable.

[0050] The implementation principle of the grounding structure of the pole-mounted circuit breaker detection device is as follows: when the voltage resistance test between the shell of the pole-mounted circuit breaker and the incoming line column of each phase circuit breaker needs to be performed, the push cylinder 331 pushes the conductive column 32 to approach the conductive base 31, so that the conductive column 32 contacts the conductive base 31, and then the conductive base 31 is grounded, and the grounding member 22, the output shaft of the rotating motor 2 and the shell of the pole-mounted circuit breaker are all grounded, so as to perform the voltage resistance test between the shell of the pole-mounted circuit breaker and the incoming line column of each phase circuit breaker; when the voltage resistance test between the incoming line column and the outgoing line column of the pole-mounted circuit breaker and the voltage resistance test between the incoming line columns of each phase circuit breaker need to be performed, the push cylinder 331 pushes the conductive column 32 away from the conductive base 31, so that the conductive column 32 is separated from the conductive base 31, at this time, the shell of the pole-mounted circuit breaker is not grounded, and the voltage resistance test between the incoming line column and the outgoing line column of the pole-mounted circuit breaker and the voltage resistance test between the incoming line columns of each phase circuit breaker can be conveniently performed. Through the above manner, the grounding or non-grounding of the shell of the pole-mounted circuit breaker is switched, manual repeated operation of the staff is not needed, the voltage resistance test efficiency is improved, and manpower is saved.

[0051] Embodiment 2

[0052] With reference to Figure 10 The difference between the embodiment and the embodiment 1 is that the conductive base 31 is provided with a connecting hole 312 for the conductive column 32 to extend into, when the conductive column 32 contacts and communicates with the conductive base 31 under the action of the push cylinder 331, the conductive column 32 extends into the connecting hole 312, compared with that the conductive column 32 is connected with only one side of the conductive base 31, the contact area between the conductive column 32 and the conductive base 31 is increased, so that the connection between the conductive column 32 and the conductive base 31 is more firm.

[0053] The implementation principle of the grounding structure of the pole-mounted circuit breaker detection device is as follows: when the push cylinder 331 pushes the conductive column 32 to the direction close to the conductive seat 31, the conductive column 32 will extend into the connecting hole 312, and the design of the connecting hole 312 makes the connection of the conductive column 32 and the conductive seat 31 more stable, so that the grounding effect of the pole-mounted circuit breaker is good, and the withstand voltage test between the shell of the pole-mounted circuit breaker and the incoming line column of each phase circuit breaker is facilitated.

[0054] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A grounding structure for a pole-mounted circuit breaker testing device, characterized in that: The device includes a frame (1) and a control mechanism (3) mounted on the frame (1). The control mechanism (3) is used to control whether the housing of the pole-mounted circuit breaker is grounded or not. The control mechanism (3) includes a conductive base (31), a conductive post (32), and a power component (33). The power component (33) is connected to the end of the conductive post (32) away from the conductive base (31). The conductive post (32) can contact or separate from the conductive base (31) under the action of the power component (33). The conductive post (32) is grounded. The housing of the pole-mounted circuit breaker is electrically connected to a grounding component (22). The grounding component (22) and the conductive base (31) are electrically connected.

2. The grounding structure for a pole-mounted circuit breaker testing device according to claim 1, characterized in that: The power unit (33) includes a push cylinder (331), the piston rod of which is connected to the conductive post (32), and the push cylinder (331) can push the conductive post (32) toward or away from the conductive seat (31).

3. The grounding structure for a pole-mounted circuit breaker testing device according to claim 1, characterized in that: The frame (1) is provided with a rotating motor (2) for rotating the pole-mounted circuit breaker. The output shaft of the rotating motor (2) is connected to the housing of the pole-mounted circuit breaker. The grounding component (22) includes a wiring part (221) and a connecting part (222). The connecting part (222) has a connecting hole (223) whose wall abuts against the output shaft of the rotating motor (2). The output shaft of the rotating motor (2) can rotate in the connecting hole (223). The wiring part (221) is located on the side of the connecting part (222) away from the output shaft of the rotating motor (2).

4. The grounding structure for a pole-mounted circuit breaker testing device according to claim 3, characterized in that: Both the wiring part (221) and the conductive base (31) are provided with wiring holes (311), and the wiring holes (311) are provided with fixing screws (313) for fixing wires.

5. The grounding structure for a pole-mounted circuit breaker testing device according to claim 3, characterized in that: The wiring part (221) is provided with a compression spring (44), and a fixing block (4) is connected to the compression spring (44). The fixing block (4) is connected to the frame (1). The compression spring (44) can press the grounding part (22) against the output shaft of the rotating motor (2).

6. The grounding structure for a pole-mounted circuit breaker testing device according to claim 5, characterized in that: The fixing block (4) has a limiting hole (43), and the wiring part (221) has a fixing hole (224) corresponding to the limiting hole (43). The compression spring (44) is disposed in the limiting hole (43) and the fixing hole (224).

7. A grounding structure for a pole-mounted circuit breaker testing device according to claim 6, characterized in that: The fixing block (4) is detachably connected to the frame (1).

8. A grounding structure for a pole-mounted circuit breaker testing device according to claim 7, characterized in that: The fixing block (4) has an installation hole (41), and the frame (1) has a connecting screw hole (5). The mounting hole (41) and the connecting screw hole (5) are connected by a fixing bolt (42).

9. The grounding structure for a pole-mounted circuit breaker testing device according to claim 1, characterized in that: The conductive base (31) has a connection hole (312) for the conductive post (32) to extend into.

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