A general-purpose experiment handcart for switch cabinets

Abstract

The utility model relates to a switch cabinet universal type experimental handcart, including chassis, pedestal, first side plate, second side plate, fixed plate and baffle, the pedestal is installed on the chassis, and the first side plate and second side plate are connected on the pedestal with interval, and the fixed plate is connected between the first side plate and second side plate with adjustable height, and a plurality of contact arms are connected on the fixed plate, and the baffle includes a stop portion, when the chassis enters the switch cabinet body, the stop portion can be adapted to abut on the abutting portion of the flap, thereby making the flap open. The utility model discloses the switch cabinet universal type experimental handcart simple structure, convenient operation, low in cost can adopt the handcart to detect the flap device of switch cabinet, avoid the error that artificial inspection can bring, improve the detection efficiency, reduce the probability that the switch cabinet quality problem such as flap jam, open insufficient or insufficient insulation spacing appears.

Description

Technical Field

[0001] This utility model relates to the field of switch cabinets, and in particular to a general-purpose experimental handcart for switch cabinets. Background Technology

[0002] Switchgear is an electrical device primarily used in power systems for opening, closing, controlling, and protecting electrical equipment during power generation, transmission, distribution, and energy conversion. Circuit breakers, housed within the switchgear cabinet, are switching devices capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. Circuit breakers are directly and disconnectably connected to the power supply. Due to their weight, circuit breakers require a handcart to move them in or out when opening or closing. In power system operation and maintenance, the valve mechanism of the switchgear is a critical safety barrier for operators. The synchronous opening and closing of the valves when the circuit breaker handcart moves between the test and working positions directly affects the reliability of live-line isolation. However, due to the compact structure and concealed valve operation of some cabinet types, such as 10kV medium-voltage switchgear, traditional manual inspections often fail to effectively detect potential hazards such as valve jamming, insufficient opening, or inadequate insulation spacing. These defects can lead to contact damage or even arcing accidents. In addition, during the production of switchgear, the delivery time of circuit breakers is usually long, so it is impossible to conduct quality inspection of the valve device in the early stage of the production process. This leads to the need for rectification when problems occur later, which delays the delivery time of the switchgear products. Utility Model Content

[0003] The purpose of this utility model is to provide a universal experimental trolley for switch cabinets, comprising: a chassis, a base, a first side plate, a second side plate, a fixed plate, and a baffle. The chassis includes connecting rods and rollers, and the connecting rods are adaptable to a drive mechanism, allowing the chassis to enter or leave the switch cabinet. The base is mounted on the chassis, and the first side plate and the second side plate are connected to the base at intervals. The fixed plate is height-adjustable between the first side plate and the second side plate, and a plurality of contact arms are connected to the fixed plate, extending in a direction perpendicular to the fixed plate. The baffle is connected to the base, the first side plate, or the second side plate, and includes a stop portion. When the chassis enters the switch cabinet, the stop portion can be adapted to abut against the abutment portion of the valve device, thereby opening the valve.

[0004] Furthermore, a protective cover is connected to the end of the contact arm away from the fixed plate, and the protective cover is detachably connected to the contact arm.

[0005] Furthermore, the connecting rod can be adapted to a rotatable drive mechanism for rotation, and the connecting rod can be screwed to the switch cabinet body. When the connecting rod rotates, the chassis can enter or leave the switch cabinet body in a horizontal direction.

[0006] Furthermore, the base includes a panel, and the first side panel and the second side panel are vertically connected to the panel.

[0007] Furthermore, the first side plate and the second side plate are respectively provided with at least two sets of first mounting holes. The fixing plate includes a left side plate and a right side plate. The left side plate and the right side plate are respectively provided with second mounting holes. When one set of first mounting holes is aligned with the second mounting holes, the fixing plate can be connected between the first side plate and the second side plate by passing a fastener through the first mounting holes and the second mounting holes.

[0008] Furthermore, there are two baffles, which are detachably connected to both sides of the base. Each baffle has at least two sets of third mounting holes arranged longitudinally. By inserting fasteners through the third mounting holes at different heights, the height of the baffle relative to the base is adjustable.

[0009] Furthermore, the stop extends longitudinally.

[0010] Furthermore, the baffle is a one-piece sheet metal part, the baffle is bent with a flange in the horizontal direction, and the end of the flange is bent with the stop portion perpendicular to the flange.

[0011] Furthermore, there are two fixing plates, which are arranged longitudinally at intervals and connected between the first side plate and the second side plate.

[0012] Furthermore, the contact arm can be adapted to connect to different protective covers.

[0013] Compared with the prior art, this universal experimental handcart for switchgear has the following advantages: 1. This utility model's universal test trolley for switchgear has a simple structure, is easy to operate, and has low cost. It can be used to inspect the valve devices of switchgear, avoiding errors that may occur during manual inspection, improving inspection efficiency, and reducing the probability of switchgear quality problems such as valve jamming, insufficient opening, or inadequate insulation spacing. Furthermore, the trolley can be used for quality inspection of valve devices in the early stages of switchgear production. If quality problems are found, rectification can be carried out early, thereby reducing the cost of rectifying defective products and accelerating the delivery time of switchgear products.

[0014] 2. The chassis of this utility model includes a connecting rod and rollers. The rollers can be designed with guide rails on the switch cabinet to enable the trolley to move smoothly inside the cabinet. The connecting rod can be screwed to the switch cabinet. When the connecting rod rotates, the chassis can enter or leave the switch cabinet in the horizontal direction, making operation convenient.

[0015] 3. The fixed plate of this utility model is height-adjustably connected between the first side plate and the second side plate, thereby making the height of the contact arm connected to the fixed plate adjustable. The contact arm can be adapted to connect different protective covers. The height of the baffle relative to the base is adjustable, so that the handcart can be adapted to different cabinet models including KYN28, NXAir, UniSafe, MVnex.XGN, etc., achieving true universality. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a universal experimental handcart for switchgear according to the present invention; Figure 2 This is a schematic diagram of the structure of a partial valve device. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] See attached document Figures 1-2 This utility model discloses a universal experimental trolley for switchgear, comprising a chassis 1, a base 2, a first side plate 3, a second side plate 4, a fixing plate 5, and a baffle 6. The chassis 1 includes a connecting rod 11 and rollers 12. The connecting rod 11 is adaptable to a drive mechanism, allowing the chassis 1 to enter or leave the switchgear cabinet. In this embodiment, the connecting rod 11 is adapted to a rotatable drive mechanism for rotation. The connecting rod 11 is screwed to the switchgear cabinet. When the connecting rod 11 rotates, the chassis 1 can enter or leave the switchgear cabinet horizontally. The cabinet is not shown in this embodiment.

[0019] In this embodiment, the base 2 is mounted on the chassis 1. The base 2 is a one-piece sheet metal component, including a panel 21. The base 2 is bent to form a frame structure consisting of the panel 21 and left, right, front, and rear side panels. The base 2 is welded or bolted to the chassis 1. The first side panel 3 and the second side panel 4 are connected to the base 2 at intervals. In this embodiment, the first side panel 3 and the second side panel 4 are parallel to each other and perpendicular to the panel 21 of the base 2, and are bolted to both ends of the panel 21 near the edges.

[0020] In this embodiment, the fixing plate 5 is height-adjustably connected between the first side plate 3 and the second side plate 4. The first side plate 3 and the second side plate 4 are each provided with at least two sets of first mounting holes 41, such as... Figure 1The figures 411 and 412 are shown respectively. In this embodiment, each group of first mounting holes 41 has three holes. In other embodiments, the number of holes may be two or more, but more than two holes can make the fixation more secure. The fixing plate 5 includes a left side plate 51 and a right side plate (not shown in the figure; the right side plate is located on the opposite side of the left side plate 51 and is covered by the second side plate 4). The left side plate 51 and the right side plate are respectively provided with second mounting holes 52. When one group of first mounting holes 41 is aligned with the second mounting holes 52, the fixing plate 5 can be connected between the first side plate 3 and the second side plate 4 by passing a fastener through the first mounting holes 41 and the second mounting holes 52. In this embodiment, there are two fixing plates 5, which are arranged longitudinally at intervals and connected between the first side plate 3 and the second side plate 4.

[0021] In this embodiment, a plurality of contact arms 53 are connected to the fixing plate 5, and the contact arms 53 extend in a direction perpendicular to the fixing plate 5. A protective cover 54 is connected to the end of each contact arm 53 away from the fixing plate 5, and the protective cover 54 is detachably connected to the contact arm 53. In this embodiment, the contact arm 53 can be adapted to connect to different protective covers to accommodate different contacts corresponding to different cabinet types.

[0022] In this embodiment, the baffle 6 is connected to the base 2, the first side plate 3, or the second side plate 4. In this embodiment, there are two baffles 6, each detachably connected to one side of the base 2. In this embodiment, the baffles 6 are bolted to the left and right side plates of the base 2. The baffle 6 has at least two sets of longitudinally arranged third mounting holes 61, such as... Figure 1 As shown, 611 and 612 are respectively. By inserting fasteners through the third mounting holes 61 at different heights, the height of the baffle 6 relative to the base 2 is adjustable.

[0023] In this embodiment, the baffle 6 includes a stop portion 62, which extends longitudinally. When the chassis 1 enters the switch cabinet, the stop portion 62 can be adapted to abut against the abutment portion of the valve device, thereby opening the valve. In this embodiment, the baffle 6 is an integral sheet metal part, and the baffle 6 has two flanges 63 bent horizontally. The two flanges 63 are respectively set perpendicular to the body of the baffle 6, and the end of the flange 63 is bent perpendicularly to the flange to form the stop portion 62. Figure 2 The valve device 7 shown includes a stop part 71, a connecting rod unit 72, a valve 73 and a column 74. The valve 73 is sleeved on the column 74, and the side of the valve 73 is connected to the stop part 71 through the connecting rod unit 72.

[0024] When the chassis 1 enters the switch cabinet, the drive mechanism is first rotated, causing the connecting rod 11 to rotate, allowing the chassis 1 to enter the switch cabinet horizontally. The rollers 12 of the chassis 1 can roll on the guide rails of the switch cabinet. The baffle 6 gradually approaches the valve device 7, that is, the stop part 62 approaches the abutment part 71, until the stop part 62 abuts against the abutment part 71. Under the action of the stop part 62, the abutment part 71 retracts inward, so that the abutment part 71 enters the receiving space formed by the two flanges 63 of the baffle 6. At this time, under the action of the connecting rod unit 72, the valve 73 moves up or down along the column 74, thereby opening the valve. After the valve opens, the contact arm 53 and the protective cover 54 can enter and abut against the contact, thereby verifying whether there are any quality problems with the internal structure of the switch cabinet. If there are quality problems, there may be problems such as the valve 73 failing to open or close normally, or the contact arm and protective cover failing to adapt to the contact arm. When the handcart needs to be removed from the switch cabinet, the reverse drive mechanism is rotated, causing the connecting rod 11 to rotate, so that the chassis 1 moves away from the switch cabinet in the horizontal direction. The baffle 6 moves away from the valve device 7, and the abutment part 71 disengages from the receiving space formed by the two flanges 63 of the baffle 6. After being freed from the restriction of the flanges 63, the valve 73 closes under its own gravity, thereby completing the handcart inspection work.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0030] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A universal experimental trolley for switchgear, characterized in that, include: The system comprises a chassis, a base, a first side plate, a second side plate, a fixed plate, and a baffle. The chassis includes connecting rods and rollers. The connecting rods are adaptable to a drive mechanism, allowing the chassis to enter or leave the switch cabinet. The base is mounted on the chassis, and the first and second side plates are connected to the base at intervals. The fixed plate is height-adjustable between the first and second side plates and has several contact arms extending perpendicular to it. The baffle is connected to the base, the first side plate, or the second side plate and includes a stop portion. When the chassis enters the switch cabinet, the stop portion can be adapted to abut against the abutment portion of a door device, thereby opening the door.

2. The universal experimental handcart for switchgear according to claim 1, characterized in that, The end of the contact arm away from the fixed plate is connected to a protective cover, which is detachably connected to the contact arm.

3. The universal experimental handcart for switchgear according to claim 1, characterized in that, The connecting rod can be adapted to a rotatable drive mechanism for rotation. The connecting rod can be screwed to the switch cabinet body. When the connecting rod rotates, the chassis can enter or leave the switch cabinet body in a horizontal direction.

4. The universal experimental handcart for switchgear according to claim 1, characterized in that, The base includes a panel, and the first side panel and the second side panel are vertically connected to the panel.

5. The universal experimental handcart for switchgear according to claim 1, characterized in that, The first side plate and the second side plate are respectively provided with at least two sets of first mounting holes. The fixing plate includes a left side plate and a right side plate. The left side plate and the right side plate are respectively provided with second mounting holes. When one set of first mounting holes is aligned with the second mounting holes, the fixing plate can be connected between the first side plate and the second side plate by passing the locking fastener through the first mounting holes and the second mounting holes.

6. The universal experimental handcart for switchgear according to claim 1, characterized in that, There are two baffles, which are detachably connected to both sides of the base. Each baffle has at least two sets of third mounting holes arranged longitudinally. By inserting fasteners through the third mounting holes at different heights, the height of the baffle relative to the base is adjustable.

7. The universal experimental trolley for switchgear according to claim 1, characterized in that, The stop extends longitudinally.

8. A universal experimental trolley for switchgear according to claim 7, characterized in that, The baffle is a one-piece sheet metal part. The baffle is bent with a flange in the horizontal direction, and the end of the flange is bent with the stop part perpendicular to the flange.

9. A universal experimental handcart for switchgear according to claim 1, characterized in that, The number of fixing plates is two, and the two fixing plates are arranged longitudinally at intervals and connected between the first side plate and the second side plate.

10. A universal experimental handcart for switchgear according to claim 2, characterized in that, The contact arm can be adapted to connect to different protective covers.

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