Tripping device for insulation test

Abstract

The utility model discloses a tripping device for an insulation test, and belongs to the technical field of insulation tests. Which comprises a tripping mechanism (2) and is characterized in that a wiring board (3) for introducing a power supply is fixed at the lower end of the tripping mechanism (2), output electrodes (5) are arranged below the tripping mechanism (2) at intervals, telescopic conductors are arranged in the output electrodes (5), the lower ends of the telescopic conductors are fixed at the bottoms of the output electrodes (5), and the top ends of the telescopic conductors are movable ends. An electricity taking plate is arranged at the movable end; an adsorption part used for being attracted to the electricity taking plate is arranged in the wiring board (3) in a lifting mode, and the electricity taking plate and the adsorption part are attached to the lower surface of the wiring board (3) after being attracted. According to the tripping device for the insulation test, the tripping mechanism and the output electrode are arranged, and the output electrode is connected with the wiring board in an adsorption manner through the telescopic conductor in the output electrode to form an access, so that the tripping device is particularly suitable for being used in an insulation test occasion.

Description

Technical Field

[0001] The invention discloses a tripping device for insulation testing, belonging to the technical field of insulation testing. Background Art

[0002] In a broad sense, a trip device refers to a device installed in a circuit breaker and mechanically connected to the circuit breaker to release the holding mechanism and automatically disconnect the circuit breaker. Its function is to cut off the power supply in time when there is leakage in the line or electric shock to a person, thereby playing a role in electric shock and leakage protection.

[0003] In a broad sense, the implementation scheme of the tripping device belongs to the common knowledge in this field, such as: the technical scheme disclosed in the Chinese invention patent with application number 200610119124.7, application date December 5, 2006, and patent name "tripping electromagnet device"; the technical scheme disclosed in the Chinese invention patent with application number 201410451106.3, application date September 5, 2014, and patent name "high-voltage circuit breaker tripping device"; the technical scheme disclosed in the Chinese utility model patent with application number 201520570780.3, application date July 31, 2015, and patent name "tripping electromagnet".

[0004] However, in some insulation testing situations, it is necessary to pass a certain level of power supply through the product to be tested to see if the insulation performance of the tester meets the requirements. During the test, it is generally necessary to test multiple products at the same time, and the on-off frequency of the circuit during the test is much greater than the on-off frequency of the circuit breaker. Therefore, the traditional tripping device is difficult to be directly applied to insulation testing situations. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to overcome the shortcomings of the prior art and provide a tripping device for insulation testing that is particularly suitable for use in insulation testing occasions by arranging a tripping mechanism and an output electrode, wherein the output electrode is connected to a terminal block in an adsorption manner through a retractable conductor therein to form a passage.

[0006] The technical solution adopted by the utility model to solve the technical problem is: the tripping device for insulation testing includes a tripping mechanism, which is characterized in that: a wiring board for introducing power is fixed at the lower end of the tripping mechanism, output electrodes are arranged at intervals below the tripping mechanism, a telescopic conductor is arranged in the output electrode, the lower end of the telescopic conductor is fixed to the bottom of the output electrode, the top of the telescopic conductor is a movable end, and a power-taking board is arranged at the movable end; an adsorption piece for engaging with the power-taking board is arranged in a liftable manner in the wiring board, and the power-taking board is attached to the lower surface of the wiring board after being attracted by the adsorption piece.

[0007] Preferably, a liftable lifting beam is provided, a plurality of output electrodes are fixed in sequence along the length direction of the lifting beam, and a release mechanism is correspondingly provided above each output electrode.

[0008] Preferably, the tripping mechanism includes a driving sleeve, in which a driving shaft is arranged to be liftable, a terminal block is fixed at the lower port of the driving sleeve, an opening with the same diameter and concentrically arranged as the lower port of the driving sleeve is opened in the terminal block, the adsorption member is fixed at the bottom of the driving shaft, and the lowest position of the adsorption member is flush with the bottom surface of the terminal block.

[0009] Preferably, an electromagnet is provided at the upper port of the driving sleeve, and the output shaft of the electromagnet is vertically downward and coaxially fixed with the upper end of the driving shaft.

[0010] Preferably, the drive sleeve and the drive shaft are both made of insulating materials.

[0011] Preferably, the output electrode includes an electrode cylinder, the telescopic conductor is located in the electrode cylinder, the power taking board is clamped at the upper port of the electrode cylinder, a power taking terminal connected to the telescopic conductor is provided at the lower port of the electrode cylinder, and an output wire is led out from the power taking terminal.

[0012] Preferably, the power board includes a connecting plate, on the upper surface of which a metal tripping gasket is embedded, the telescopic conductor is connected to the tripping gasket, and the tripping gasket is attracted to the adsorption piece and adhered to the lower surface of the terminal board.

[0013] Preferably, the telescopic conductor is a spring disposed in the electrode cylinder.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the release device for insulation testing, a release mechanism and an output electrode are provided, and the output electrode is connected to the wiring board in an adsorption manner through the retractable conductor therein to form a passage, which is particularly suitable for use in insulation testing occasions.

[0016] In the tripping device for insulation testing, a plurality of output electrodes are provided, and the arrangement that the electrodes can be raised and lowered by a lifting beam helps to achieve reconnection after tripping, and is suitable for a working mode in which the circuit is frequently switched on and off during insulation testing.

[0017] In the tripping device for insulation testing, a spring is used as a conductor to realize the connection of the test power supply, and at the same time, the elastic force of the spring is utilized to help realize the reset of the power taking board after tripping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Front view of the trip device for insulation testing.

[0019] Figure 2 for Figure 1 Right view of .

[0020] Figure 3 This is a front view of the tripping mechanism of the tripping device used for insulation testing.

[0021] Figure 4 for Figure 3 AA section view.

[0022] Figure 5 Front view of the output electrodes of the trip device for insulation testing.

[0023] Figure 6 for Figure 5 Middle BB section view.

[0024] Figure 7-8 This is a schematic diagram of the working status of the tripping device used for insulation testing.

[0025] Among them: 1, fixing frame 2, tripping mechanism 3, terminal board 4, spring 5, output electrode 6, lifting beam 7, output wire 8, input wire 9, electromagnet 10, driving sleeve 11, driving shaft 12, magnet 13, tripping gasket 14, connecting plate 15, electrode cylinder 16, locking nut 17, power terminal. DETAILED DESCRIPTION

[0026] Figures 1 to 8 It is the best embodiment of the utility model, and the following Figures 1 to 8 The utility model is further described.

[0027] like Figure 1~2 As shown, a tripping device for insulation testing includes a tripping mechanism 2, the tripping mechanism 2 is fixed to a fixing frame 1, a wiring board 3 is arranged at the bottom of the tripping mechanism 2, an input wire 8 is connected to the wiring board 3, an output electrode 5 is arranged below the tripping mechanism 2, the output electrode 5 is fixed in a lifting beam 6, and the output electrode 5 is lifted and lowered below the tripping mechanism 2 along with the lifting beam 6. A plurality of output electrodes 5 are sequentially arranged along the length direction of the lifting beam 6, and a tripping mechanism 2 is correspondingly arranged above each output electrode 5.

[0028] The bottom of the output electrode 5 passes through the lifting beam 6 and then extends to the lower surface of the lifting beam 6, and the output wire 7 is led out from the bottom of the output electrode 5. A spring 4 is arranged inside the output electrode 5, and the bottom of the spring 4 is connected to the output wire 7. When the spring 4 is output from the output electrode 5 and extends upward to the terminal block 3, the spring 4 itself is used as a wire. At this time, the power signal sent in through the input wire 8 is sent to the output wire 7 through the terminal block 3 and the spring 4 in sequence, forming a power path. When tripping, the spring 4 separates from the terminal block 3 and retracts into the output electrode 5, cutting off the power path.

[0029] like Figure 3~4 As shown, the tripping mechanism 2 includes an electromagnet 9, and the fixing frame 1 includes a horizontal fixing plate surface, the electromagnet 9 is fixed on the upper surface of the fixing plate surface, and the output shaft of the electromagnet 9 is vertically downward. A driving sleeve 10 is provided on the lower surface of the fixing frame 1, and the driving sleeve 10 is installed on the lower surface of the fixing plate surface through a plurality of long screws axially penetrating the outer ring thereof, and the center hole of the driving sleeve 10 faces the output shaft of the electromagnet 9 upward. A driving shaft 11 is coaxially provided in the driving sleeve 10, and the upper end of the driving shaft 11 penetrates the fixing plate surface of the fixing frame 1 and is coaxially fixed with the output shaft of the electromagnet 9.

[0030] The above-mentioned terminal block 3 is fixed to the lower end of the drive sleeve 10 by a plurality of short screws that penetrate axially, and a through hole that is equal in size to the inner hole of the drive sleeve 10 and opposite to each other is opened at the center of the terminal block 3. A magnet 12 is fixed at the bottom of the drive shaft 11, and the magnet 12 extends downward to the center hole of the terminal block 3, and the lower surface of the magnet 12 is flush with the lower surface of the terminal block 3. When the electromagnet 9 is energized, its output rod retracts, and at this time, the magnet 12 is driven by the drive shaft 11 to move upward in the drive sleeve 10. The drive sleeve 10 and the drive shaft 11 are both made of insulating materials.

[0031] like Figures 5 and 6 As shown, the output electrode 5 includes an electrode tube 15, and a locking nut 16 is arranged at the bottom of the electrode tube 15. The outer ring diameter of the upper part of the electrode tube 15 is enlarged to form a boss. The electrode tube 15 is inserted into the mounting hole of the lifting beam 6 from top to bottom. The boss on the upper part of the electrode tube 15 is stuck on the upper surface of the lifting beam 6. After the lower part of the electrode tube 15 passes through the lifting beam 6, it is locked by the locking nut 16.

[0032] A power terminal 17 made of metal is fixed at the lower end of the electrode cylinder 15, and a screw for fixing the output wire 7 is provided at the bottom center of the power terminal 7. A connecting plate 14 is placed at the upper end of the electrode cylinder 15, and the outer diameter of the connecting plate 14 is larger than the diameter of the electrode cylinder 15, and is clamped at the upper end of the electrode cylinder 15. The connecting plate 14 is made of insulating material, and a card slot is provided at the center of the upper surface of the connecting plate 14, and an iron release gasket 13 is provided in the card slot.

[0033] A through hole is provided at the center of the tripping gasket 13, and an internal thread is provided in the through hole. The screw for fixing the tripping gasket 13 and the connecting plate 14 passes through the tripping gasket 13 and the connecting plate 14 from top to bottom and then extends into the electrode tube 15. At this time, the screw is entirely located in the center hole of the tripping gasket 13. The above-mentioned spring 4 is located in the electrode tube 15, the upper end of the spring 4 is connected to the screw for fixing the tripping gasket 13, and the lower end of the spring 4 is connected to the screw at the center of the power terminal 17.

[0034] The specific working process and working principle are as follows:

[0035] In the normal passage state, the connecting plate 14 extends upward to the terminal block 3. At this time, the tripping gasket 13 at the center of the connecting plate 14 is attracted to the magnet 12, and the upper surface of the tripping gasket 13 is attached to the lower surface of the terminal block 3 to form a passage. At this time, the power signal sent in through the input wire 8 is sent to the power terminal 17 through the terminal block 3, the tripping gasket 13, and the spring 4 in sequence, and is finally output through the output wire 7, forming a power passage. Figure 7 Status shown.

[0036] When the release is required, the electromagnet 9 is energized, and the output rod of the electromagnet 9 retracts. At this time, the magnet 12 is driven to move upward in the drive sleeve 10 through the drive shaft 11. The magnetic force of the magnet 12 is difficult to overcome the tension of the spring 4, as well as the weight of the release gasket 13 and the connecting plate 14, so that the release gasket 13 is separated from the magnet 12, cutting off the power supply path. Figure 8 At the same time, the tripping gasket 13 is reset under the pulling force of the spring 4 and returns to the upper end of the electrode tube 15 again.

[0037] When it is necessary to connect again, the lifting beam 6 rises, driving all the output electrodes 5 fixed thereto to rise and connect with the corresponding tripping mechanism 2. At this time, the electromagnet 9 is reset after losing power, and the magnet 12 descends to the lower port of the terminal block 3 again. When the tripping gasket 13 is attracted by the magnet 12 in the corresponding tripping mechanism 2, the lifting beam 6 descends to the lowest end, and the power supply path is formed again by the elastic force of the spring 4. Figure 1 Status shown.

[0038] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A tripping device for insulation testing, comprising a tripping mechanism (2), characterized in that: A wiring board (3) for introducing a power source is fixed at the lower end of the tripping mechanism (2); an output electrode (5) is arranged at intervals below the tripping mechanism (2); a telescopic conductor is arranged in the output electrode (5); the lower end of the telescopic conductor is fixed to the bottom of the output electrode (5); the top of the telescopic conductor is a movable end; and a power supply board is arranged at the movable end; an adsorption member for engaging with the power supply board is arranged in the wiring board (3) in a manner that can be raised and lowered; the power supply board is attached to the lower surface of the wiring board (3) after being attracted by the adsorption member.

2. The tripping device for insulation testing according to claim 1, characterized in that: A liftable lifting beam (6) is provided, a plurality of output electrodes (5) are fixed in sequence along the length direction of the lifting beam (6), and a release mechanism (2) is correspondingly provided above each output electrode (5).

3. The tripping device for insulation testing according to claim 1 or 2, characterized in that: The tripping mechanism (2) comprises a driving sleeve (10), a driving shaft (11) being arranged in a liftable manner in the driving sleeve (10), a terminal block (3) being fixed at the lower end of the driving sleeve (10), an opening having the same diameter as the lower end of the driving sleeve (10) and being arranged concentrically, and an adsorption member being fixed at the bottom of the driving shaft (11), and the lowest position of the adsorption member being flush with the bottom surface of the terminal block (3).

4. The tripping device for insulation testing according to claim 3, characterized in that: An electromagnet (9) is arranged at the upper end of the driving sleeve (10), and an output shaft of the electromagnet (9) is vertically downward and coaxially fixed with the upper end of the driving shaft (11).

5. The tripping device for insulation testing according to claim 3, characterized in that: The drive sleeve (10) and the drive shaft (11) are both made of insulating materials.

6. The tripping device for insulation testing according to claim 1 or 2, characterized in that: The output electrode (5) comprises an electrode tube (15), a telescopic conductor is located in the electrode tube (15), a power taking plate is clamped at the upper end of the electrode tube (15), a power taking terminal (17) connected to the telescopic conductor is provided at the lower end of the electrode tube (15), and an output wire (7) is led out from the power taking terminal (17).

7. The tripping device for insulation testing according to claim 6, characterized in that: The power taking plate comprises a connecting plate (14), a metal tripping gasket (13) is embedded in the upper surface of the connecting plate (14), the telescopic conductor is connected to the tripping gasket (13), and the tripping gasket (13) is attracted to the adsorption piece and affixed to the lower surface of the wiring board (3).

8. The tripping device for insulation testing according to claim 6, characterized in that: The telescopic conductor is a spring (4) arranged in the electrode cylinder (15).

Images