A device and method for dismounting a circuit breaker wafle contact tension spring

Abstract

The application discloses a device and method for dismounting a circuit breaker wrench contact tension spring, which comprises a supporting mechanism, a lifting mechanism and a transmission mechanism, the transmission mechanism is composed of a transmission rod, a rocker and a gear, the rocker is rotated, the lifting mechanism is driven to move up and down through a plurality of sets of transmission rods and gears, so that the tension spring is dismounted from the contact finger of the wrench contact. The application has the advantages that: through the transmission mechanism, the lifting mechanism can be ensured to act simultaneously, during the dismounting process of the tension spring, the uniform force of each part can be ensured, and local deformation caused by excessive local force can be avoided; through the movement of the lifting mechanism, the tension spring of the wrench contact with different sizes can be dismounted.

Description

Technical Field

[0001] This invention relates to a device and method for disassembling the tension spring of a circuit breaker's sprite contact, mainly applied to the maintenance and repair of sprite contact circuit breakers in electrical equipment. It allows for the quick disassembly of the tension helical spring (hereinafter referred to as tension spring) in circuit breakers that need to be replaced or repaired. Background Technology

[0002] In the field of electrical equipment, the tension coil springs in the high-voltage circuit breaker's spline contacts frequently fail due to issues such as breakage, overheating, and stress relaxation. Therefore, it is often necessary to disassemble the tension springs in the spline contacts for replacement or testing. However, improper disassembly techniques or equipment selection can easily lead to excessive localized stress and deformation of the springs. Therefore, in the maintenance and repair of spline contact circuit breakers in electrical equipment, there is an urgent need for a device specifically designed for installing the tension springs in spline contacts, enabling quick and non-destructive disassembly of the springs. Summary of the Invention

[0003] The purpose of this invention is to fill the gaps in the existing field and provide a device and method for disassembling the tension spring of the sprite contact of a circuit breaker.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A device for disassembling the tension spring of a circuit breaker splice contact includes a support mechanism 1, a lifting mechanism 2, and a transmission mechanism 3.

[0006] The support mechanism 1 has a disc structure with a disc diameter larger than the diameter of the circuit breaker's plum blossom contact. Multiple support arms 13 perpendicular to the disc are evenly distributed on the disc structure to ensure that the force is even when the tension spring 4 is disassembled, while ensuring that the lifting mechanism 2 moves perpendicular to the support arms 13.

[0007] The number of lifting mechanisms 2 is the same as the number of support arms 13. They are vertically connected to the support arms 13 by threads. The hook 21 at the lower end of the lifting mechanism 2 is an opening and closing structure, which contains an energy storage spring and is in the open state in the free state.

[0008] The transmission mechanism 3 consists of a transmission rod 31, a rocker arm 33, and a gear 32 connected together. The transmission rod 31 is fixed to the support mechanism 1 and the support arm 13 by a fixed bearing 11. The contact between the transmission rod 31 fixed on the support mechanism 1 and the support arm 13, the contact between the transmission rod 31 and the rocker arm 33, and the contact between the transmission rod 31 and the gear 32 are all achieved by gear meshing. The transmission rod 31, the rocker arm 33, and the gear 32 rotate simultaneously. The gear 32 is connected to the horizontal gear 23 on the outer surface of the lifting mechanism 2. When the rocker arm 33 rotates in different directions, the gear 32 rotates in different directions, thereby driving the lifting mechanism 2 to move perpendicular to the support arm 13.

[0009] The disc structure has eight support arms 13 evenly distributed on it, and correspondingly, the number of lifting mechanisms 2 is also eight.

[0010] A limit block 22 is provided on the lifting mechanism 2 at the inner end of the support arm 13.

[0011] The working method of the device for disassembling the tension spring of the circuit breaker splice contact includes the following steps:

[0012] Step 1: Rotate the rocker arm 33 to move the lifting mechanism 2 to the outer end of the support arm 13 to the maximum displacement, and move the device to bring the lifting mechanism 2 above the target tension spring 4 on the contact finger 5 of the disassembled plum blossom contact.

[0013] Step 2: Rotate the rocker arm 33 to move the lifting mechanism 2 toward the inner end of the support arm 13. When the hook 21 touches the tension spring 4, the hook 21 is compressed and closes. Continue to rotate the rocker arm 33 to move the lifting mechanism 2 toward the inner end of the support arm 13. When the hook 21 is no longer compressed, it opens. Stop rotating the rocker arm 33.

[0014] Step 3: Rotate the rocker arm 33 to move the lifting mechanism 2 toward the outer end of the support arm 13, and stop when the grab hook 21 is about to contact the tension spring 4; adjust the axial position of the device so that the tension spring 4 is just inside the grab hook 21, and continue to rotate the rocker arm 33 to move the lifting mechanism 2 toward the outer end of the support arm 13 to the maximum displacement.

[0015] Step 4: Remove the device from the plum blossom contact, and the tension spring 4 is disassembled.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The transmission mechanism 3 ensures that the lifting mechanism 2 operates simultaneously, ensuring that the tension spring 4 is evenly stressed during disassembly and avoiding local deformation due to excessive local stress. The lifting mechanism 2 can be moved to disassemble tension springs 4 with different sizes of plum blossom contacts. Attached Figure Description

[0018] Figure 1a This is a side view of the device of the present invention. Figure 1b This is a front view of the device of the present invention.

[0019] Figure 2 This is a flowchart illustrating the operation of this invention. Figure 2 a, Figure 2 b、 Figure 2 c and Figure 2 d corresponds to each operation step.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1 is the support mechanism, 11 is the fixed bearing, 12 is the rocker arm fixed shaft, 13 is the support arm, 2 is the lifting mechanism, 21 is the grab hook, 22 is the limit block, 23 is the horizontal tooth, 3 is the transmission mechanism, 31 is the transmission rod, 33 is the rocker arm, 32 is the gear, 4 is the tension spring, and 5 is the contact finger of the plum blossom contact. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] like Figure 1a and Figure 1b As shown, the present invention provides a device for disassembling the tension spring of the plum blossom contact of a circuit breaker, which includes a support mechanism 1, a lifting mechanism 2, and a transmission mechanism 3.

[0024] The support mechanism 1 has a disc structure with a disc diameter larger than the diameter of the circuit breaker's stud contact. Eight support arms 13 are evenly distributed on the disc structure, perpendicular to the disc, to ensure that the force is even when the tension spring 4 is disassembled, while ensuring that the lifting mechanism 2 moves perpendicular to the support arms 13.

[0025] The number of lifting mechanisms 2 is the same as the number of support arms 13, which is also eight. They are vertically connected to the support arms 13 by threads. The hook 21 at the lower end of the lifting mechanism 2 is an opening and closing structure, which contains an energy storage spring and is in the open state in the free state. A limit block 22 is provided on the lifting mechanism 2 at the inner end of the support arm 13.

[0026] The transmission mechanism 3 consists of a transmission rod 31, a rocker arm 33, and a gear 32 connected together. The transmission rod 31 is fixed to the support mechanism 1 and the support arm 13 by a fixed bearing 11. The contact between the transmission rod 31 fixed on the support mechanism 1 and the support arm 13, the contact between the transmission rod 31 and the rocker arm 33, and the contact between the transmission rod 31 and the gear 32 are all achieved by gear meshing. The transmission rod 31, the rocker arm 33, and the gear 32 rotate simultaneously. The gear 32 is connected to the horizontal gear 23 on the outer surface of the lifting mechanism 2. When the rocker arm 33 rotates in different directions, the gear 32 rotates in different directions, thereby driving the lifting mechanism 2 to move perpendicular to the support arm 13.

[0027] Rotating the rocker arm 33, through multiple sets of transmission rods 31 and gears 32, drives the lifting mechanism 2 to move up and down, thereby removing the tension spring 4 from the contact finger 5 of the plum blossom contact.

[0028] like Figure 2 As shown, in use, the present invention includes the following operating steps:

[0029] Step 1: Rotate the rocker arm 33 to move the lifting mechanism 2 to the outer end of the support arm 13 to the maximum displacement, i.e., the limit block 22. Move this device so that the lifting mechanism 2 is above the target tension spring 4 on the contact finger 5 of the disassembled plum blossom contact. Figure 2 As shown in a.

[0030] Step 2: Rotate the rocker arm 33 to move the lifting mechanism 2 towards the inner end of the support arm 13. When the grab hook 21 touches the tension spring 4, the grab hook 21 is compressed and closes. Continue rotating the rocker arm 33 to move the lifting mechanism 2 further towards the inner end of the support arm 13. When the grab hook 21 is no longer compressed, it opens. Stop rotating the rocker arm 33. Figure 2 As shown in b.

[0031] Step 3: Rotate the rocker arm 33 to move the lifting mechanism 2 towards the outer end of the support arm 13, stopping when the grab hook 21 is about to contact the tension spring 4; adjust the axial position of the device so that the tension spring 4 is just inside the grab hook 21, and continue to rotate the rocker arm 33 to move the lifting mechanism 2 towards the outer end of the support arm 13 to the maximum displacement, i.e., the limit block 22. Figure 2 As shown in c.

[0032] Step 4: Remove the device from the plum blossom contact. The tension spring 4 is now disassembled. Figure 2 As shown in d.

Claims

1. A device for disassembling the tension spring of a circuit breaker splice contact, characterized in that: It includes a support mechanism (1), a lifting mechanism (2), and a transmission mechanism (3); The support mechanism (1) is a disc structure with a disc diameter larger than the diameter of the circuit breaker's plum blossom contact. Multiple support arms (13) perpendicular to the disc are evenly distributed on the disc structure to ensure that the force is even when the tension spring (4) is disassembled, while ensuring that the lifting mechanism (2) moves perpendicular to the support arms (13). The number of lifting mechanisms (2) is the same as the number of support arms (13), and they are vertically connected to the support arms (13) by threads. The hook (21) at the lower end of the lifting mechanism (2) is an opening and closing structure, which contains an energy storage spring and is in the open state in the free state. The transmission mechanism (3) consists of a transmission rod (31), a rocker arm (33), and a gear (32) connected together. The transmission rod (31) is fixed to the support mechanism (1) and the support arm (13) by a fixed bearing (11). The contact between the transmission rod (31) fixed on the support mechanism (1) and the support arm (13), the contact between the transmission rod (31) and the rocker arm (33), and the contact between the transmission rod (31) and the gear (32) are all achieved by gear meshing. The transmission rod (31), the rocker arm (33), and the gear (32) rotate simultaneously. The gear (32) is connected to the horizontal gear (23) on the outer surface of the lifting mechanism (2). When the rocker arm (33) rotates in different directions, the gear (32) rotates in different directions, which drives the lifting mechanism (2) to move perpendicular to the support arm (13).

2. The device for disassembling the tension spring of a circuit breaker sprite contact according to claim 1, characterized in that: The disc structure has eight support arms (13) evenly distributed on it, and correspondingly, the number of lifting mechanisms (2) is also eight.

3. The device for disassembling the tension spring of a circuit breaker sprite contact according to claim 1, characterized in that: A limit block (22) is provided on the lifting mechanism (2) at the inner end of the support arm (13).

4. The method of operation of the device for disassembling the tension spring of the circuit breaker splice contact as described in any one of claims 1 to 3, characterized in that: Includes the following steps: Step 1: Rotate the rocker arm (33) to move the lifting mechanism (2) to the outer end of the support arm (13) to the maximum displacement, and move the device to move the lifting mechanism (2) above the target tension spring (4) on the contact finger (5) of the disassembled plum blossom contact; Step 2: Rotate the rocker arm (33) to move the lifting mechanism (2) towards the inner end of the support arm (13). When the grab hook (21) touches the tension spring (4), the grab hook (21) is compressed and closes. Continue to rotate the rocker arm (33) to move the lifting mechanism (2) towards the inner end of the support arm (13). When the grab hook (21) is no longer compressed, it opens. Stop rotating the rocker arm (33). Step 3: Rotate the rocker arm (33) to move the lifting mechanism (2) to the outer end of the support arm (13), and stop when the grab hook (21) is about to contact the tension spring (4); adjust the axial position of the device so that the tension spring (4) is just inside the grab hook (21), and continue to rotate the rocker arm (33) to move the lifting mechanism (2) to the outer end of the support arm (13) to the maximum displacement; Step 4: Remove the device from the plum blossom contact, and the tension spring (4) is disassembled.

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