A safe and reliable new type of AC metal-clad mobile switchgear

Abstract

The utility model discloses a safe and reliable novel ac metal armored mobile switchgear relates to the electric power equipment field. The utility model discloses a switch cabinet main part and handcart, and the bottom of handcart is equipped with the base, and the lower part of base is equipped with a group of lifting mechanism, and the lifting mechanism includes electric telescopic handle, and the bottom of lifting mechanism is equipped with the support seat, the utility model discloses the base below the bottom of handcart sets up lifting mechanism and support seat, and the lifting of support seat is controlled to the telescopic action of electric telescopic handle, in the maintenance process, can stably support and fix handcart, successfully solved the problem that traditional handcart is difficult to fix and is easy to move when overhauling, created a stable operating environment for the maintenance work, indirectly enhanced the safety and the high efficiency of operation when the equipment maintenance.

Description

Technical Field

[0001] This utility model relates to the field of power equipment, specifically a safe and reliable new AC metal-armored mobile switchgear. Background Technology

[0002] Mobile switchgear, as a key piece of equipment in power systems for circuit switching control, fault isolation, and equipment maintenance, exhibits significant advantages due to its unique structural design. Its core component, the trolley, can move flexibly along guide rails, freely switching between working, testing, and maintenance positions. When equipment needs maintenance, the trolley can be moved entirely out of the cabinet, significantly reducing the scope of power outages and maintenance time, and significantly improving the operational flexibility and maintenance efficiency of the power system. At the same time, the standardized docking structure between the trolley and the cabinet ensures the reliability of electrical connections, adapts to different specifications of circuit breakers, fuses, and other components, and meets diverse power distribution needs. It has been widely used in high and low voltage power distribution scenarios such as power plants, substations, and industrial and mining enterprises.

[0003] In the operation of existing mobile switchgear, a handcart is provided. Operators need to move the handcart from the test position to the maintenance position for maintenance operations. However, during the operation, operators need to inspect the main body of the handcart. Traditional handcarts are movable structures, and it is difficult for operators to fix the handcart for maintenance. This is mainly due to the large weight of the handcart and the difficulty in fixing it. In view of this, the inventors urgently need to design a fixed handcart structure. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a safe and reliable new AC metal-armored mobile switchgear to solve the technical problem of the difficulty in fixing the handcart.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safe and reliable new type of AC metal-armored mobile switchgear, comprising a switch cabinet body and a handcart, wherein the bottom of the handcart is provided with a base, and the lower part of the base is provided with a set of lifting mechanisms, wherein the lifting mechanisms include an electric telescopic rod, and the bottom of the lifting mechanisms is provided with a support base.

[0006] By adopting the above technical solution, firstly, a lifting mechanism and support seat are set at the bottom of the base of the handcart. The support seat can be raised and lowered by the extension and retraction of the electric telescopic rod. During maintenance, the handcart can be stably supported and fixed, solving the problem that traditional handcarts are difficult to fix and easy to move during maintenance, and providing a stable operating platform for maintenance work. At the same time, the design of the lifting mechanism does not affect the normal movement function of the handcart. When it is necessary to move the handcart, the support seat can be retracted by the telescopic rod, allowing the handcart to move flexibly by its own moving structure.

[0007] Furthermore, the main body of the switch cabinet is provided with a circuit breaker compartment in the middle, the interior of the circuit breaker compartment is provided with a sliding groove, the end of the sliding groove is designed with a circular groove, and the front of the handcart is designed with rounded corners.

[0008] By adopting the above technical solution, firstly, the slide rail in the circuit breaker compartment provides guidance for the movement of the trolley, and the rounded corner at the front of the trolley precisely matches the round groove at the end of the slide rail. When the trolley moves to the corresponding position, the rounded corner is embedded in the round groove, and the mutual contact of the arc surfaces forms a lateral limit, directly restricting the trolley's left and right displacement in the cabinet, avoiding component misalignment or poor contact caused by lateral displacement; at the same time, the cooperation between the rounded corner and the round groove not only enhances lateral stability when fixed, but also reduces the frictional resistance between the trolley and the slide rail during movement, making the trolley advance or retreat more smoothly and reducing the jamming phenomenon during operation.

[0009] Furthermore, the support base is in the shape of a frustum, and the lower part of the frustum is provided with anti-slip texture.

[0010] By adopting the above technical solution, firstly, the truncated cone shape of the support base increases the contact area with the ground compared to ordinary planar support structures, which can more evenly distribute the weight of the handcart, improve the overall stability of the handcart when it is fixed, and prevent tilting caused by the shift of the center of gravity; at the same time, the anti-slip texture on the lower part of the truncated cone increases the friction between it and the ground, so that even if the ground is wet or has slight impurities, it can prevent the handcart from accidentally sliding during maintenance.

[0011] Furthermore, the support base can be lowered to a minimum height below the height supported by the wheel.

[0012] By adopting the above technical solution, firstly, the support base can be lowered to a minimum height lower than the height supported by the wheels, which means that in a fixed state, the support base can directly contact the ground. The anti-slip design on its surface increases the friction with the ground, and the friction restricts the lateral and longitudinal movement of the handcart, thus achieving a stable fixation of the handcart and preventing the handcart from accidentally sliding due to external force during maintenance. At the same time, this design does not require the support base to bear the full weight of the handcart; the fixation effect can be achieved solely through friction.

[0013] Furthermore, the surface of the base is provided with a sliding groove, the inside of the sliding groove is provided with a pull rod, the surface of the base is also provided with a movable locking block, the surface of the sliding groove is provided with a locking groove, and the pull rod is slidably connected to the movable locking block.

[0014] By adopting the above technical solution, firstly, the sliding groove, pull rod and movable block on the base surface cooperate with each other, and then combined with the slot on the sliding groove surface, the handcart can be accurately positioned during the movement, preventing the handcart from shaking inside the switch cabinet body and ensuring the stability of the handcart during operation.

[0015] Furthermore, busbar contacts are provided on the inner surface of the circuit breaker compartment, and plum blossom contacts are provided on the upper part of the handcart.

[0016] By adopting the above technical solution, firstly, the busbar contacts inside the circuit breaker compartment and the plum blossom contacts on the upper part of the trolley can form a stable electrical connection when the trolley is in the working position, ensuring smooth current transmission and reducing the problem of excessive resistance caused by poor contact.

[0017] Furthermore, the outer shell of the switch cabinet body is made of aluminum-zinc coated steel sheet.

[0018] By adopting the above technical solution, the outer shell of the switchgear body is made of aluminum-zinc coated steel plate, which has excellent corrosion resistance and oxidation resistance, and can effectively resist the erosion of environmental factors such as moisture and dust, thus extending the service life of the switchgear.

[0019] In summary, the present invention has the following main advantages:

[0020] 1. This utility model utilizes a lifting mechanism and support base set under the base of the handcart. The lifting and lowering of the support base is controlled by the extension and retraction of the electric telescopic rod. During maintenance, the handcart can be stably supported and fixed, successfully solving the problem that traditional handcarts are difficult to fix and easy to move during maintenance. This creates a stable operating environment for maintenance work, thereby enhancing the safety of equipment use and the efficiency of operation.

[0021] 2. This utility model provides guidance for the movement of the handcart by setting a sliding groove inside the circuit breaker compartment. The rounded corner at the front of the handcart can perfectly fit with the round groove at the end of the sliding groove. When the handcart moves to the appropriate position, the rounded corner will be embedded in the round groove. The mutual contact of the arc surfaces forms a lateral constraint, which directly restricts the left and right movement of the handcart in the cabinet and prevents the misalignment or poor contact of components due to lateral movement. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a side view of the structure of this utility model;

[0024] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 4 For the present utility model Figure 3 A schematic diagram of the specific structure at point A in the middle.

[0026] In the diagram: 1. Switchgear body; 2. Handcart; 3. Plum blossom contact; 4. Rounded corner; 5. Slide groove; 6. Circular groove; 7. Busbar contact; 8. Pull rod; 9. Wheel; 10. Groove; 11. Movable locking block; 12. Locking slot; 13. Frustum; 14. Electric telescopic rod; 15. Support base; 16. Lifting mechanism; 17. Base; 18. Circuit breaker compartment. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In this embodiment:

[0029] A safe and reliable new type of AC metal-armored mobile switchgear, such as Figure 1-4 As shown, the device includes a switch cabinet body 1 and a handcart 2. The bottom of the handcart 2 is equipped with a base 17, and a lifting mechanism 16 is provided at the lower part of the base 17. The lifting mechanism 16 includes an electric telescopic rod 14, and a support seat 15 is provided at the bottom of the lifting mechanism 16. First, the lifting mechanism 16 and the support seat 15 are set at the lower part of the base 17 at the bottom of the handcart 2. The support seat 15 can be raised and lowered by the extension and retraction of the electric telescopic rod 14. During maintenance, the handcart can be stably supported and fixed, solving the problem that traditional handcarts are difficult to fix and easy to move during maintenance, and providing a stable operating platform for maintenance work. At the same time, the design of the lifting mechanism does not affect the normal movement function of the handcart. When it is necessary to move the handcart, the support seat can be retracted by the telescopic rod, so that the handcart can move flexibly by its own moving structure. This design takes into account the convenience of the handcart's movement and the stability during maintenance, improving the safety and operational efficiency of the equipment.

[0030] See Figure 1 , Figure 2 , Figure 3 The switch cabinet body 1 has a circuit breaker compartment 18 in the middle. The circuit breaker compartment 18 has a slide 5 inside, and the end of the slide 5 is designed with a circular groove 6. The front of the handcart 2 is designed with a rounded corner 4. First, the slide 5 in the circuit breaker compartment 18 provides guidance for the movement of the handcart 2. The rounded corner 4 at the front of the handcart is precisely matched with the circular groove 6 at the end of the slide 6. When the handcart moves to the corresponding position, the rounded corner is embedded in the circular groove. The mutual contact of the arc surfaces forms a lateral limit, which directly restricts the left and right displacement of the handcart in the cabinet and avoids component misalignment or poor contact caused by lateral displacement. At the same time, the cooperation between the rounded corner and the circular groove can not only enhance the lateral stability when fixed, but also reduce the frictional resistance between the handcart and the slide 6 during movement, making the handcart move forward or backward more smoothly and reducing the jamming phenomenon during operation. Furthermore, the arc contact can distribute the force, reduce the wear of components after long-term use, and indirectly extend the service life of the equipment.

[0031] See Figure 4 The support base 15 is shaped like a frustum 13, and the lower part of the frustum 13 is provided with anti-slip texture. By adopting the above technical solution, firstly, the frustum 13 shape of the support base 15 increases the contact area with the ground compared with the ordinary flat support structure, which can more evenly distribute the weight of the handcart 2, improve the overall stability when the handcart is fixed, and prevent tilting caused by the shift of the center of gravity; at the same time, the anti-slip texture at the bottom of the frustum increases the friction between the handcart and the ground, and even if the ground is wet or has slight impurities, it can prevent the handcart from accidentally sliding during the maintenance process, further ensuring the safety of the maintenance operation.

[0032] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The lowest height that the support base 15 can be lowered to is lower than the height supported by the wheel 9. Firstly, the fact that the lowest height that the support base 15 can be lowered to is lower than the height supported by the wheel 9 means that in the fixed state, the support base can directly contact the ground. The anti-slip design on its surface increases the friction with the ground, and the friction restricts the lateral and longitudinal movement of the handcart 2, thus achieving a stable fixation of the handcart and preventing the handcart from accidentally sliding due to external force during maintenance. At the same time, this design does not require the support base to bear the full weight of the handcart; the fixation effect can be achieved solely through friction. This simplifies the load-bearing requirements of the support base and ensures the positional stability of the handcart during maintenance without affecting the load-bearing function of the wheel, making the fixing operation more convenient and reliable.

[0033] See Figure 1 , Figure 2 , Figure 3 The base 17 has a groove 10 on its surface, and a pull rod 8 is provided inside the groove 10. The base 17 also has a movable locking block 11 on its surface, and a locking groove 12 is provided on the surface of the slide 5. The pull rod 8 and the movable locking block 11 are slidably connected. First, the groove 10 on the surface of the base 17, the pull rod 8 and the movable locking block 11 cooperate, and then the locking groove 12 on the surface of the slide 5 can achieve precise positioning of the handcart 2 during movement, preventing the handcart from shaking inside the switch cabinet body 1 and ensuring the stability of the handcart during operation. At the same time, the sliding connection structure between the pull rod and the movable locking block makes the locking and unlocking operations more convenient during the switching of the handcart in different positions, reducing the wear of parts caused by inaccurate positioning and improving the operational reliability of the equipment.

[0034] See Figure 1 , Figure 2 , Figure 3The circuit breaker compartment 18 has busbar contacts 7 on its internal surface, and the trolley 2 has a plum blossom contact 3 on its upper part. First, the busbar contacts 7 inside the circuit breaker compartment 18 cooperate with the plum blossom contacts 3 on the upper part of the trolley 2 to form a stable electrical connection when the trolley is in the working position, ensuring smooth current transmission and reducing the problem of excessive resistance caused by poor contact. At the same time, the plum blossom contacts have good elasticity and conductivity, which can adapt to slight positional deviations when the trolley is docked, ensuring reliable contact during long-term use, reducing the risk of failure caused by contact problems, and improving the safety of equipment operation.

[0035] See Figure 1 , Figure 2 , Figure 3 The outer shell of the switchgear body 1 is made of aluminum-zinc coated steel plate. This material has excellent corrosion resistance and oxidation resistance, which can effectively resist the erosion of environmental factors such as moisture and dust, and extend the service life of the switchgear. At the same time, the aluminum-zinc coated steel plate has high strength, which can provide reliable mechanical protection for the internal electrical components, prevent external impacts from damaging the internal equipment, improve the overall safety protection performance of the switchgear, and adapt to a variety of complex industrial environments.

[0036] The implementation principle of this embodiment is as follows: The lower part of the handcart 2 is provided with a base 17, the lower part of the base 17 is provided with an electric telescopic rod 14, the lower part of the electric telescopic rod 14 is provided with a support seat 15, the support seat 15 is in the shape of a frustum, and the bottom of the frustum is provided with anti-slip texture. The electric telescopic rod 14 can drive the support seat 15 to move a distance lower than the height of the plane where the wheel 9 is located, so that the handcart 2 generates strong friction to fix it, and then it can be inspected. The front of the handcart 2 is designed with rounded corners 4. The middle part of the switch cabinet body 1 is provided with a circuit breaker chamber 18. The circuit breaker chamber 18 is provided with a sliding groove 5. The end of the sliding groove 5 is designed with a circular groove 6. The circular groove 6 fits with the rounded corners 4, which can prevent the handcart 2 from moving laterally in the circuit breaker chamber 18, and further ensure that the handcart 2 can operate stably in the experimental position.

[0037] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A safe and reliable new type of AC metal-armored mobile switchgear, characterized in that: The device includes a switch cabinet body (1) and a handcart (2). The bottom of the handcart (2) is provided with a base (17). The lower part of the base (17) is provided with a set of lifting mechanisms (16). The lifting mechanism (16) includes an electric telescopic rod (14). The bottom of the lifting mechanism (16) is provided with a support seat (15).

2. The safe and reliable novel AC metal-armored mobile switchgear according to claim 1, characterized in that: The main body (1) of the switch cabinet is provided with a circuit breaker compartment (18) in the middle. The circuit breaker compartment (18) is provided with a sliding groove (5). The end of the sliding groove (5) is designed with a circular groove (6). The front of the handcart (2) is designed with rounded corners (4).

3. The safe and reliable novel AC metal-armored mobile switchgear according to claim 1, characterized in that: The support base (15) is in the shape of a frustum (13), and the lower part of the frustum (13) is provided with anti-slip texture.

4. The safe and reliable novel AC metal-armored mobile switchgear according to claim 1, characterized in that: The support base (15) can be lowered to a minimum height below the height supported by the wheel (9).

5. The safe and reliable novel AC metal-armored mobile switchgear according to claim 2, characterized in that: The base (17) has a groove (10) on its surface, and a pull rod (8) is provided inside the groove (10). The base (17) also has a movable locking block (11) on its surface. The slide groove (5) has a locking groove (12) on its surface, and the pull rod (8) is slidably connected to the movable locking block (11).

6. The safe and reliable novel AC metal-armored mobile switchgear according to claim 2, characterized in that: The inner surface of the circuit breaker compartment (18) is provided with busbar contacts (7), and the upper part of the handcart (2) is provided with plum blossom contacts (3).

7. The safe and reliable novel AC metal-armored mobile switchgear according to claim 1, characterized in that: The outer shell of the switch cabinet body (1) is made of aluminum-zinc coated steel plate.

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