Device for rapidly detecting occlusion depth of moving contact and static contact of high-low voltage switch cabinet

Abstract

The utility model relates to the technical field of high and low voltage switch cabinet detection, and discloses a high and low voltage switch cabinet moving and static contact occlusion depth rapid detection device, which comprises a moving contact, a conducting rod, a static contact and a static contact box, and is characterized in that the moving contact is sleeved on the conducting rod; according to the utility model, the conducting rod and the moving contact slide into the static contact box, when the moving contact contacts with the static contact, the moving contact expands to drive the C-shaped plate and the fixed hook to obliquely slide upwards, so that the fixed hook can be separated from the sliding hook, and at the moment, the spring is released and pushes the arc-shaped plate and the three suckers to slide upwards; the three suckers are adsorbed on the inner wall of the static contact box, so that the L-shaped plate and the sliding semicircular plate do not continue to slide into the static contact box along with the conducting rod and the moving contact, the displacement sensor slides towards the L-shaped plate along with the conducting rod at the moment, and a probe of the displacement sensor is pressed into the displacement sensor by the L-shaped plate. And the inward sliding distance of the moving contact after being contacted with the static contact can be measured, so that the occlusion depth can be measured.

Description

Technical Field

[0001] This utility model relates to the field of high and low voltage switchgear testing technology, and more specifically to a rapid testing device for the engagement depth of moving and stationary contacts in high and low voltage switchgear. Background Technology

[0002] The main function of switchgear is to open, close, control, and protect electrical equipment during the power generation, transmission, distribution, and energy conversion processes of the power system. It is equipped with moving contacts and stationary contacts. Electricity can only be conducted by engaging the moving contacts with the stationary contacts through the handcart circuit breaker. The moving and stationary contacts must be fully engaged to ensure the normal operation of the switchgear. If the engagement depth is too shallow, the resistance between the stationary and moving contacts will increase and the current will decrease, resulting in more heat being generated during use. Excessive heat accumulation can lead to a fire. Therefore, the engagement depth must be tested when engaging the moving and stationary contacts.

[0003] The existing detection method is to measure the scratch by applying Vaseline. Although the principle is simple, this method is time-consuming, inefficient, and requires a lot of manpower. Therefore, there is an urgent need to design a rapid detection device for the engagement depth of moving and stationary contacts in high and low voltage switchgear to solve the above problems. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a rapid detection device for the engagement depth of moving and stationary contacts in high and low voltage switchgear, so as to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution:

[0006] A rapid detection device for the engagement depth of moving and stationary contacts in high and low voltage switchgear includes a moving contact, a conductive rod, a stationary contact box, and a stationary contact. The moving contact is sleeved on the conductive rod, and the stationary contact is fixedly installed inside the stationary contact box. The device also includes:

[0007] A movable component is mounted on a conductive rod. The movable component includes a fixed semicircular plate, a sliding semicircular plate, and an L-shaped plate. The fixed semicircular plate is fixedly mounted on the outer circumference of the conductive rod, the sliding semicircular plate is slidably mounted on the outer circumference of the conductive rod, the sliding semicircular plate is slidably connected to the fixed semicircular plate, and the L-shaped plate is fixedly mounted on the outer circumference of the sliding semicircular plate.

[0008] The displacement sensor is fixedly mounted on the conductive rod, and the probe of the displacement sensor is in contact with the L-shaped plate;

[0009] A snap-fit ​​assembly is fixedly mounted on the moving contact.

[0010] The adsorption component is slidably mounted on the L-shaped plate and can be snapped into place with the snap-fit ​​component. The adsorption component can be adsorbed onto the inner wall of the stationary contact box.

[0011] The moving component also includes two limiting strips, which are symmetrically fixedly installed at the bottom of the sliding semicircular plate. Two limiting grooves are opened at the top of the fixed semicircular plate, and the two limiting strips are slidably installed in the two limiting grooves respectively.

[0012] The snap-fit ​​assembly includes a C-shaped plate and a fixed hook. The C-shaped plate is fixedly installed on the moving contact, and the fixed hook is fixedly installed on the top of the C-shaped plate. The adsorption assembly and the fixed hook can snap together.

[0013] The C-shaped plate is made of epoxy resin.

[0014] The adsorption assembly includes a slide rod, a sliding hook, an arc-shaped plate, three suction cups, and a spring. The slide rod is slidably mounted on the L-shaped plate, the sliding hook is fixedly mounted on the bottom of the slide rod, the arc-shaped plate is fixedly mounted on the top of the slide rod, the three suction cups are circumferentially fixedly mounted on the arc-shaped plate, and the spring is sleeved on the outside of the slide rod and positioned between the arc-shaped plate and the L-shaped plate.

[0015] The fixed hook and the sliding hook are interlocked.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] In this invention, a conductive rod and a moving contact are slid into the stationary contact box. When the moving contact contacts the stationary contact, it expands, causing the C-shaped plate and the fixed hook to tilt and slide upwards. This allows the fixed hook and the sliding hook to disengage. At this time, the spring is released and pushes the arc-shaped plate and three suction cups to slide upwards. The three suction cups adhere to the inner wall of the stationary contact box, preventing the L-shaped plate and the sliding semicircular plate from continuing to slide into the stationary contact box with the conductive rod and the moving contact. Meanwhile, the displacement sensor slides towards the L-shaped plate with the conductive rod, and the probe of the displacement sensor is pressed into the displacement sensor by the L-shaped plate. The distance that the moving contact slides inward after contacting the stationary contact can be measured, thereby measuring the engagement depth. This device can measure the engagement depth of the moving contact and the stationary contact simultaneously, making the measurement fast, accurate, time-saving, and labor-saving. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the mobile component of this utility model;

[0020] Figure 3 This is a schematic diagram of the snap-fit ​​assembly of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the adsorption component of this utility model.

[0022] The attached figures are labeled as follows: 1. Moving contact; 2. Conductive rod; 3. Moving assembly; 301. Fixed semicircular plate; 302. Sliding semicircular plate; 303. L-shaped plate; 304. Limiting strip; 305. Limiting groove; 4. Displacement sensor; 5. Snap-fit ​​assembly; 501. C-shaped plate; 502. Fixed hook; 6. Adsorption assembly; 601. Slide rod; 602. Sliding hook; 603. Arc plate; 604. Suction cup; 605. Spring; 7. Stationary contact box; 8. Stationary contact. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0024] Figures 1-4 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figure 1 -Appendix Figure 4 The present invention will be further described below.

[0025] A rapid detection device for the engagement depth of moving and stationary contacts in high and low voltage switchgear includes a moving contact 1, a conductive rod 2, a stationary contact box 7, and a stationary contact 8. The moving contact 1 is sleeved on the conductive rod 2, and the stationary contact 8 is fixedly installed inside the stationary contact box 7. The device also includes:

[0026] The movable component 3 is mounted on the conductive rod 2;

[0027] Displacement sensor 4 is fixedly mounted on conductive rod 2, and moving component 3 is in contact with displacement sensor 4;

[0028] The snap-fit ​​component 5 is fixedly installed on the moving contact 1;

[0029] The adsorption component 6 is elastically slidably installed in the movable component 3 and snapped into the snap-fit ​​component 5.

[0030] Specifically, the moving component 3 includes a fixed semicircular plate 301, a sliding semicircular plate 302, and an L-shaped plate 303. The fixed semicircular plate 301 is fixedly installed on the outer circumference of the conductive rod 2, and the sliding semicircular plate 302 is slidably installed on the outer circumference of the conductive rod 2. The sliding semicircular plate 302 is slidably connected to the fixed semicircular plate 301. The L-shaped plate 303 is fixedly installed on the outer circumference of the sliding semicircular plate 302. The adsorption component 6 is disposed inside the L-shaped plate 303. The moving component 3 also includes two limiting strips 304. The two limiting strips 304 are symmetrically fixedly installed at the bottom of the sliding semicircular plate 302. The top of the fixed semicircular plate 301 has two limiting grooves 305, and the two limiting strips 304 are slidably installed in the two limiting grooves 305 respectively.

[0031] In this embodiment, the sliding semicircular plate 302 can be limited by the limiting strip 304 and the limiting groove 305 to prevent it from detaching from the fixed semicircular plate 301.

[0032] Specifically, the probe of displacement sensor 4 is in contact with L-shaped plate 303.

[0033] In this embodiment, in the initial state, the probe of the displacement sensor 4 is at the initial end of the stroke (uncompressed state), and the displacement sensor 4 is electrically connected to a digital display screen to facilitate the reading of data by the staff.

[0034] Specifically, the snap-fit ​​assembly 5 includes a C-shaped plate 501 and a fixing hook 502. The C-shaped plate 501 is fixedly installed on the moving contact 1, and the fixing hook 502 is fixedly installed on the top of the C-shaped plate 501. The adsorption assembly 6 and the fixing hook 502 are snapped together. The C-shaped plate 501 is attached to the moving contact 1 with adhesive that can be repeatedly removed and torn, or is tightly snapped onto the moving contact 1.

[0035] In this embodiment, the moving contact 1 expands when it contacts the stationary contact 8, which can cause the C-shaped plate 501 and the fixed hook 502 to tilt and slide upward, thereby causing the fixed hook 502 to detach from the adsorption assembly 6.

[0036] Specifically, the C-type board 501 is made of epoxy resin.

[0037] In this implementation scheme, epoxy resin combines insulation and strength, ensuring the stable use of C-type board 501.

[0038] Specifically, the adsorption component 6 includes a slide rod 601, a sliding hook 602, an arc-shaped plate 603, three suction cups 604, and a spring 605. The slide rod 601 is slidably installed inside the moving component 3. The sliding hook 602 is fixedly installed at the bottom of the slide rod 601. The arc-shaped plate 603 is fixedly installed at the top of the slide rod 601. The three suction cups 604 are circumferentially fixedly installed on the arc-shaped plate 603. The fixed hook 502 and the sliding hook 602 are interlocked. The spring 605 is sleeved on the outside of the slide rod 601 and is located between the arc-shaped plate 603 and the L-shaped plate 303. When the fixed hook 502 and the sliding hook 602 are interlocked, the spring 605 is in a compressed state.

[0039] In this embodiment, when the moving contact 1 contacts the stationary contact 8, it expands, causing the C-shaped plate 501 and the fixed hook 502 to tilt and slide upwards, which can disengage the fixed hook 502 and the sliding hook 602. At this time, the spring 605 will be released and push the arc plate 603 and the three suction cups 604 to slide upwards. The three suction cups 604 will adhere to the inner wall of the stationary contact box 7, locking the position of the L-shaped plate 303 and the sliding semicircular plate 302.

[0040] Working principle: During use, the conductive rod 2 and the moving contact 1 are slid into the stationary contact box 7. The moving contact 1 is usually a quincunx contact structure, consisting of multiple independent copper alloy fingers forming a circle. The outward-facing ends of the fingers are beveled, and a circumferential spring structure is fitted around the fingers to compress them into a circumferential shape. The diameter of the stationary contact 8 is slightly larger than the inner diameter of the moving contact 1. When the moving contact 1 contacts the stationary contact 8, the beveled surface of the moving contact 1 contacts the end of the stationary contact 8. As the moving contact 1 moves forward, this beveled surface pushes the fingers of the moving contact 1 outward. Therefore, when the moving contact 1 contacts the stationary contact 8, it expands, driving the C-shaped plate 501 and... The fixed hook 502 tilts upward and slides, which can disengage the fixed hook 502 and the sliding hook 602. At this time, the spring 605 will be released and push the arc plate 603 and the three suction cups 604 to slide upward. The three suction cups 604 will be attached to the inner wall of the stationary contact box 7, so that the L-shaped plate 303 and the sliding semi-circular plate 302 will not continue to slide into the stationary contact box 7 along with the conductive rod 2 and the moving contact 1. At this time, the displacement sensor 4 will slide towards the L-shaped plate 303 along with the conductive rod 2. The probe of the displacement sensor 4 will be pressed into the displacement sensor 4 by the L-shaped plate 303, which can measure the distance that the moving contact 1 slides inward after contacting the stationary contact 8, thereby measuring the engagement depth.

[0041] It should be noted that the displacement sensor 4, model KR-150-V2, directly contacts the object being measured through a probe, transmitting the mechanical displacement to an internal conversion mechanism, such as a potentiometer, which outputs an electrical signal proportional to the displacement, thereby achieving accurate measurement of the displacement of the object being measured.

[0042] The displacement sensor 4 and the conductive rod 2, as well as the fixed semicircular plate 301 and the conductive rod 2, can be fixed and bonded with adhesive that can be repeatedly removed and torn. After the test is completed, the moving component 3, the displacement sensor 4, and the adsorption component 6 can be quickly removed.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A high-low voltage switch cabinet moving and static contact bite depth quick detection device, comprising a moving contact (1), a conductive rod (2), a static contact box (7), and a static contact (8), the moving contact (1) is sleeved on the conductive rod (2), and the static contact (8) is fixedly installed in the static contact box (7), characterized in that: Also include: ​ The moving assembly (3) is arranged on the conductive rod (2), the moving assembly (3) includes fixed semicircular plate (301), sliding semicircular plate (302), L-shaped plate (303), the fixed semicircular plate (301) is fixedly installed on the circumferential outer wall of the conductive rod (2), the sliding semicircular plate (302) is slidably installed on the circumferential outer wall of the conductive rod (2), the sliding semicircular plate (302) is slidably connected with the fixed semicircular plate (301), and the L-shaped plate (303) is fixedly installed on the circumferential outer wall of the sliding semicircular plate (302); The displacement sensor (4) is fixedly installed on the conductive rod (2), and the probe of the displacement sensor (4) is in contact with the L-shaped plate (303); The clamping assembly (5) is fixedly installed on the moving contact (1); The adsorption assembly (6) is slidably installed on the L-shaped plate (303) and can be clamped and fixed with the clamping assembly (5), and the adsorption assembly (6) can be adsorbed on the inner wall of the static contact box (7).

2. The high-low voltage switch cabinet moving and static contact bite depth quick detection device according to claim 1, characterized in that: The moving assembly (3) further includes two limiting strips (304), the two limiting strips (304) are symmetrically fixedly installed on the bottom of the sliding semicircular plate (302), and the top of the fixed semicircular plate (301) is provided with two limiting grooves (305), and the two limiting strips (304) are slidably installed in the two limiting grooves (305) respectively.

3. The high-low voltage switch cabinet moving and static contact bite depth quick detection device according to claim 1, characterized in that: The clamping assembly (5) includes C-shaped plate (501), fixed hook (502), C-shaped plate (501) is fixedly installed on the moving contact (1), fixed hook (502) is fixedly installed on the top of C-shaped plate (501), and the adsorption assembly (6) and the fixed hook (502) can be clamped with each other.

4. The high-low voltage switch cabinet moving and static contact bite depth quick detection device according to claim 3, characterized in that: The C-shaped plate (501) is made of epoxy resin material.

5. The high-low voltage switch cabinet moving and static contact bite depth quick detection device according to claim 3, characterized in that: The adsorption assembly (6) includes slide rod (601), sliding hook (602), arc-shaped plate (603), three suction cups (604), spring (605), slide rod (601) is slidably installed on the L-shaped plate (303), sliding hook (602) is fixedly installed on the bottom of slide rod (601), arc-shaped plate (603) is fixedly installed on the top of slide rod (601), three suction cups (604) are circumferentially equidistantly fixedly installed on the arc-shaped plate (603), and spring (605) is sleeved outside slide rod (601) and is arranged between arc-shaped plate (603) and L-shaped plate (303).

6. The high-low voltage switch cabinet moving and static contact bite depth quick detection device according to claim 5, characterized in that: The fixed hook (502) and the sliding hook (602) are clamped with each other.

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