Air-assisted tripping device with earth leakage protection function

Abstract

The utility model relates to the technical field of air switch tripping devices, and discloses an air-assisted tripping device with earth leakage protection, which comprises an air switch, a mounting plate is fixedly assembled on the outer wall of the air switch, a tripping device is mounted on the outer wall of the mounting plate, a wiring hole is formed in the outer wall of the air switch, and the outer wall of the air switch is provided with an earth leakage protection device. A flashboard is installed on the outer wall of the air switch, a reset switch is fixedly assembled on the outer wall of the release, and a contact rod is fixedly assembled on the outer wall of the release. According to the air-assisted tripping device with the leakage protection function, through the arrangement of the pull rod, the limiting ring, the limiting ring and the telescopic spring, the pull rod moves under the action of the telescopic spring, and the fixed plate is driven to move in the moving process of the pull rod, so that the outer wall of the fixed plate is in contact with the outer wall of the mounting block; and at the moment, the mounting block and the release can be fixed under the action of the pull rod and the fixing plate, so that the release can have a stable working state.

Description

Technical Field

[0001] The utility model relates to the technical field of air switch releasers, in particular to an air-assisted release with leakage protection. Background Art

[0002] The release is a device that is mechanically connected to the circuit breaker and is used to release the clamping mechanism and automatically disconnect the circuit breaker. Its function is that when there is leakage in the line or electric shock to a person, the vector sum of the current passing through the zero-sequence current transformer is not equal to zero, and a voltage is generated on both sides of the transformer secondary coil and amplified by the integrated circuit. When the setting value is reached, the power supply is cut off within 0.1 seconds through the leakage release, thereby playing a role in electric shock and leakage protection. The release needs to be installed on the air switch for linkage use.

[0003] When a traditional trip device is in use, the trip device needs to be used in conjunction with an air switch, so the trip device needs to be installed on the outer wall of the air switch. When installing the trip device, the traditional air switch only connects the trip device by inserting a contact rod. The connection of the contact rod is not stable enough. Once the contact rod is disconnected from the air switch during use, the trip device will not be able to work normally and will lose its protective function. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an air-assisted tripping device with leakage protection, which has the advantages of high stability and easy disassembly, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: an air-assisted release with leakage protection, comprising an air switch, the outer wall of the air switch is fixedly equipped with a mounting plate, the outer wall of the mounting plate is equipped with a releaser, the outer wall of the air switch is provided with a wiring hole, the outer wall of the air switch is equipped with a gate plate, the outer wall of the releaser is fixedly equipped with a reset switch, the outer wall of the releaser is fixedly equipped with a contact rod, the outer wall of the mounting plate is provided with a mounting groove, the outer wall of the releaser is fixedly equipped with a mounting block, the inner cavity of the mounting plate is movably sleeved with a pull rod, the outer wall of the pull rod is fixedly equipped with a limiting ring, the outer edge of the pull rod is fixedly equipped with a fixing plate, the outer wall of the pull rod is movably sleeved with a telescopic spring, and the inner wall of the mounting plate is fixedly equipped with a limiting ring.

[0006] As a preferred technical solution of the utility model: the shape and size of the outer wall of the mounting block matches the shape and size of the inner cavity of the mounting groove, and the thickness of the mounting block is equal to the depth of the inner cavity of the mounting groove.

[0007] As a preferred technical solution of the utility model: the inner wall diameter of the limiting ring is smaller than the outer diameter of the telescopic spring, and the outer wall diameter of the limiting ring is larger than the outer diameter of the telescopic spring.

[0008] As a preferred technical solution of the utility model: a movable groove is opened in the inner cavity of the mounting plate, and the inner wall diameter of the movable groove is larger than the outer wall diameter of the pull rod.

[0009] As a preferred technical solution of the utility model: the outer wall of the fixed plate is fixedly equipped with an anti-skid pad, and the anti-skid pad is made of silica gel.

[0010] As a preferred technical solution of the utility model: a movable groove is opened on the inner wall of the installation groove close to the fixed plate, and the shape and size of the movable groove match the shape and size of the outer wall of the fixed plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The air-assisted release with leakage protection, through the set pull rod and limit ring, limit ring, telescopic spring, under the action of the telescopic spring, the pull rod moves, and the fixed plate is driven to move during the movement of the pull rod, so that the outer wall of the fixed plate contacts the outer wall of the mounting block. At this time, the mounting block and the releaser can be fixed under the action of the pull rod and the fixed plate, so that the releaser can have a stable working state.

[0013] 2. The air-assisted release with leakage protection, through the set pull rod and contact rod, when the releaser needs to be disassembled and replaced, you only need to pull the pull rod outward, so that the pull rod drives the fixed plate to slide outward, so that the fixed plate enters the movable groove, thereby making the fixed plate leave the outer wall of the mounting block. At this time, the releaser can be disassembled very conveniently for maintenance or replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the release of the utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the mounting plate of the utility model;

[0018] Figure 5 For this utility model Figure 4 Enlarged structural diagram at A in the middle.

[0019] In the figure: 1. air switch; 2. mounting plate; 3. release; 4. wiring hole; 5. gate; 6. reset switch; 7. contact rod; 8. mounting groove; 9. mounting block; 10. pull rod; 11. fixing plate; 12. limit ring; 13. telescopic spring; 14. limit ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 An air-assisted release with leakage protection comprises an air switch 1, a mounting plate 2 is fixedly mounted on the outer wall of the air switch 1, a release 3 is mounted on the outer wall of the mounting plate 2, a wiring hole 4 is provided on the outer wall of the air switch 1, a gate 5 is installed on the outer wall of the air switch 1, a reset switch 6 is fixedly mounted on the outer wall of the release 3, a contact rod 7 is fixedly mounted on the outer wall of the release 3, a mounting groove 8 is provided on the outer wall of the mounting plate 2, a mounting block 9 is fixedly mounted on the outer wall of the release 3, a pull rod 10 is movably sleeved on the inner cavity of the mounting plate 2, a limit ring 12 is fixedly mounted on the outer wall of the pull rod 10, a fixing plate 11 is fixedly mounted on the outer edge of the pull rod 10, a telescopic spring 13 is movably sleeved on the outer wall of the pull rod 10, and a limit ring 14 is fixedly mounted on the inner wall of the mounting plate 2.

[0022] By setting the mounting plate 2 on the outer wall of the air switch 1 and the mounting groove 8 opened on the outer wall of the mounting plate 2, when the releaser 3 needs to be installed, it is only necessary to align the position of the mounting block 9 with the position of the mounting groove 8, and when the mounting block 9 enters the inner cavity of the mounting groove 8, the outer wall of the fixing plate 11 will be tightly attached to the outer wall of the mounting block 9, thereby realizing the installation of the releaser 3 under the action of the mounting groove 8, the mounting block 9, and the contact rod 7.

[0023] In a preferred embodiment, the shape and size of the outer wall of the mounting block 9 matches the shape and size of the inner cavity of the mounting groove 8 , and the thickness of the mounting block 9 is equal to the depth of the inner cavity of the mounting groove 8 .

[0024] By setting the mounting block 9 on the outer wall of the releaser 3, when installing the releaser 3, it is only necessary to align the position of the mounting block 9 with the inner cavity of the mounting groove 8 and push the mounting block 9 into the inner cavity of the mounting groove 8. At this time, the pull rod 10 will push the limiting ring 12 under the action of the limiting ring 12, so that the outer wall of the limiting ring 12 is tightly attached to the outer wall of the mounting block 9, thereby fixing the releaser 3.

[0025] In a preferred embodiment, the inner wall diameter of the limiting ring 14 is smaller than the outer diameter of the telescopic spring 13 , and the outer wall diameter of the limiting ring 12 is larger than the outer diameter of the telescopic spring 13 .

[0026] By means of the telescopic spring 13 movably sleeved on the outer wall of the pull rod 10, and under the action of the limit ring 12 and the limit ring 14, a certain limiting effect can be exerted on the telescopic spring 13, so that the telescopic spring 13 can push the pull rod 10 to move forward along the inner cavity of the mounting plate 2, so that the outer wall of the fixing plate 11 contacts the outer wall of the mounting block 9, thereby achieving the fixation of the releaser 3.

[0027] In a preferred embodiment, a movable groove is provided in the inner cavity of the mounting plate 2 , and the inner wall diameter of the movable groove is larger than the outer wall diameter of the pull rod 10 .

[0028] By opening a movable groove in the inner cavity of the mounting plate 2, and respectively setting a limiting ring 12 on the outer wall of the pull rod 10 and a limiting circle 14 on the inner wall of the movable groove, the telescopic spring 13 is restricted between the limiting ring 12 and the limiting circle 14, so that the pull rod 10 moves forward under the action of the telescopic spring 13, thereby achieving the effect of fixing the mounting block 9.

[0029] In a preferred embodiment: the outer wall of the fixing plate 11 is fixedly equipped with an anti-skid pad, and the anti-skid pad is made of silica gel.

[0030] By providing an anti-skid pad on the outer wall of the fixing plate 11, when the outer wall of the fixing plate 11 contacts the outer wall of the mounting block 9, the friction between the fixing plate 11 and the outer wall of the mounting block 9 can be increased under the action of the anti-skid pad, thereby better fixing the mounting block 9 and making it more convenient to install and remove the releaser 3.

[0031] In a preferred embodiment, a movable groove is provided on the inner wall of the installation groove 8 close to the fixed plate 11 , and the shape and size of the movable groove match the shape and size of the outer wall of the fixed plate 11 .

[0032] By opening a movable groove on the inner wall of the mounting groove 8 close to the fixed plate 11, when pushing the mounting block 9 into the inner cavity of the mounting groove 8, first pull the pull rod 10 so that the fixed plate 11 moves outward into the inner cavity of the movable groove under the action of the pull rod 10, thereby allowing the mounting block 9 to completely enter the inner cavity of the mounting groove 8.

[0033] Working principle: During the use of the above-mentioned device, when it is necessary to set the release 3 on the outer wall of the air switch 1, first align the contact rod 7 with the mounting hole on the outer wall of the mounting plate 2. At this time, the release 3 can be pushed inward, and the pull rod 10 is pulled outward in the process of pushing the release 3, so that the pull rod 10 drives the fixed plate 11 to move and compress the telescopic spring 13. At this time, the fixed plate 11 will enter the inner cavity of the movable groove. At this time, the mounting block 9 can be completely pushed into the inner cavity of the mounting groove 8, and then the pull rod 10 is released, so that the pull rod 10 moves inward under the action of the telescopic spring 13. At this time, the fixed plate 11 will also contact the outer wall of the mounting block 9 under the action of the pull rod 10, and the anti-slip pad provided on the outer wall of the fixed plate 11 can better fix the mounting block 9, and it will be very convenient to remove the release 3. You only need to pull the pull rod 10 outward. At this time, you can pull the release 3 outward, which is very convenient to remove the release 3 from the mounting plate 2 and the outer wall of the air switch 1.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air-assisted tripping device with leakage protection, comprising an air switch (1), characterized in that: The outer wall of the air switch (1) is fixedly equipped with a mounting plate (2), the outer wall of the mounting plate (2) is equipped with a release (3), the outer wall of the air switch (1) is provided with a wiring hole (4), the outer wall of the air switch (1) is equipped with a gate plate (5), the outer wall of the release (3) is fixedly equipped with a reset switch (6), the outer wall of the release (3) is fixedly equipped with a contact rod (7), the outer wall of the mounting plate (2) is provided with a mounting groove (8), the outer wall of the release (3) is fixedly equipped with a mounting block (9), the inner cavity of the mounting plate (2) is movably sleeved with a pull rod (10), the outer wall of the pull rod (10) is fixedly equipped with a limit ring (12), the outer edge of the pull rod (10) is fixedly equipped with a fixing plate (11), the outer wall of the pull rod (10) is movably sleeved with a telescopic spring (13), and the inner wall of the mounting plate (2) is fixedly equipped with a limit ring (14).

2. The air-assisted tripping device with leakage protection according to claim 1, characterized in that: The shape and size of the outer wall of the mounting block (9) matches the shape and size of the inner cavity of the mounting groove (8), and the thickness of the mounting block (9) is equal to the depth of the inner cavity of the mounting groove (8).

3. The air-assisted tripping device with leakage protection according to claim 1, characterized in that: The inner wall diameter of the limiting ring (14) is smaller than the outer diameter of the telescopic spring (13), and the outer wall diameter of the limiting ring (12) is larger than the outer diameter of the telescopic spring (13).

4. The air-assisted tripping device with leakage protection according to claim 1, characterized in that: A movable groove is provided in the inner cavity of the mounting plate (2), and the inner wall diameter of the movable groove is greater than the outer wall diameter of the pull rod (10).

5. The air-assisted tripping device with leakage protection according to claim 1, characterized in that: The outer wall of the fixing plate (11) is fixedly equipped with an anti-skid pad, and the anti-skid pad is made of silica gel.

6. The air-assisted tripping device with leakage protection according to claim 1, characterized in that: A movable groove is provided on the inner wall of the installation groove (8) on one side close to the fixed plate (11), and the shape and size of the movable groove match the shape and size of the outer wall of the fixed plate (11).

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