A switch cabinet with a device to prevent the central cabinet from tipping over

Abstract

The present invention provides a switch cabinet with a device to prevent a center cabinet from tipping over, comprising a center cabinet slidably arranged in the switch cabinet through a slide rail and a secondary cabinet arranged above the center cabinet, an operating handle is arranged in the middle of the outer side of the center cabinet, and a fixed anti-tipping device is arranged near the edge of the lower side of the secondary cabinet, and the anti-tipping device comprises a connecting belt and an emergency locking assembly, and the emergency locking assembly is fixedly installed on the switch cabinet through a mounting seat, one end of the connecting belt is connected to the inside of the emergency locking assembly, and the other end is detachably installed on the operating handle. Beneficial effect: The present invention provides a combination of a sliding part and a follow-up limiting part supporting the sliding part, and matches the limiting rod arranged on the sliding part with the card slot located on one side of the limiting slot, so that when the connecting belt is pulled quickly, it can be separated from the follow-up limiting part and contact with the card slot to achieve limiting, thereby ensuring personnel safety.

Description

Technical Field

[0001] The invention relates to a switch cabinet with a device for preventing a central cabinet from tipping over, belonging to the technical field of electrical maintenance. Background Art

[0002] A substation is a place in the power system that transforms voltage and current, receives electric energy, and distributes electric energy. The substation in a power plant is a step-up substation, which boosts the electric energy generated by the generator and feeds it into the high-voltage power grid.

[0003] Among the components of the substation, the busbar PT, that is, the voltage transformer cabinet, adopts a combined structure, and different numbers and types of PTs can be configured according to the specific project. The overall structure adopts a removable metal armored structure and is equipped with a large observation window on the panel, so that the operation of the cabinet can be observed at any time. Each PT is equipped with a separate trolley, and its primary and secondary circuits all adopt a tap structure to achieve the separation of the primary and secondary chambers. The overall appearance is beautiful and reliable, and it can be pulled out for maintenance under power.

[0004] However, since the voltage transformer cabinet is large in size and heavy in weight, most of the existing PT trolleys are track-type slides and do not have any deceleration protection devices. In actual use, the PT trolley needs to be slowly pulled out manually, but there is still a certain height difference between the voltage transformer cabinet and the ground. During the pulling process, the cabinet needs to be supported to prevent the cabinet from overturning and causing casualties. This method is extremely unstable. There have been cases of cabinet overturning and injuring people during actual operation. Therefore, it is necessary to design a device to prevent the cabinet from tipping over to avoid injuries to operators during maintenance. Summary of the invention

[0005] Purpose of the invention: In view of the deficiencies in the prior art, the present invention provides a switch cabinet with a device for preventing the central cabinet from tipping over, so as to solve the problems mentioned in the above background technology.

[0006] Technical solution: A switch cabinet with a device to prevent a center cabinet from tipping over, comprising a center cabinet slidably arranged in the switch cabinet through a slide rail and a secondary cabinet arranged above the center cabinet, an operating handle is arranged in the middle of the outer side of the center cabinet, and a fixed anti-tipping device is arranged near the edge position on the lower side of the secondary cabinet, the anti-tipping device comprises a connecting belt and an emergency locking assembly, the emergency locking assembly is fixedly installed on the switch cabinet through a mounting seat, one end of the connecting belt is connected to the inside of the emergency locking assembly, and the other end is detachably installed on the operating handle.

[0007] Furthermore, in order to achieve emergency stop of the sliding part when the force changes greatly, the emergency locking assembly includes a housing, a spring cavity with an opening is provided in the middle of the housing, and a spiral sliding cavity is provided outside the spring cavity;

[0008] A spring rebound part is installed in the spring cavity, a sliding assembly is arranged in the sliding cavity, the sliding assembly comprises a sliding part fixedly connected to the connecting belt and a follower limiting part in contact with the sliding part, and one end of the sliding part away from the connecting belt is fixedly connected to one end of the spring rebound part;

[0009] The sliding cavity comprises a sliding groove for sliding of the sliding part and a limiting groove for sliding of the follower limiting part. The edge of the limiting groove wall is provided with a clamping groove, and the side of the sliding part is provided with a limiting column matching the clamping groove.

[0010] Furthermore, in order to reduce sliding friction, at least two sliding wheels are provided on the side where the sliding portion contacts the sliding groove, and at least two sliding wheels are provided on the side where the follower limiting portion contacts the limiting groove.

[0011] Furthermore, in order to increase the friction between the sliding part and the follower limiting part, at least one rubber arc-shaped protrusion is fixedly provided on the side where the sliding part contacts the follower limiting part; at least two rubber sliding wheels are provided on the side where the follower limiting part contacts the sliding part, and the rubber arc-shaped protrusion is embedded between the two rubber sliding wheels and contacts the rubber sliding wheels on both sides.

[0012] Furthermore, in order to achieve the resetting of the follow-up limiting part, the starting end and the tail end of the limiting groove are blocked, the follow-up limiting part is in contact with the starting end in an initial state, and a resetting spring is arranged between the follow-up limiting part and the tail end.

[0013] Furthermore, in order to achieve secondary limiting, the starting end of the sliding groove is blocked, the tail end is opened for the in and out sliding of the connecting belt, and a limiting block is provided at the shell outlet.

[0014] Furthermore, in order to reset the sliding part, a reset knob is provided on the outer side of the housing and penetrates the housing and is fixedly connected to an end of the spring rebound part away from the sliding part.

[0015] Furthermore, in order to reduce the wear of the connecting belt, the mounting seat is provided with a through groove for accommodating the connecting belt to pass through, a roller is provided in the through groove, and the connecting belt is fitted to the upper side of the roller.

[0016] Furthermore, in order to connect the central cabinet more stably and conveniently, the connecting belt and the operating handle are detachably connected through a lock and a latch, the lock is fixedly arranged at the end of the connecting belt, and the latch is fixedly arranged on the operating handle.

[0017] Beneficial effects: Based on the phenomenon that the center cabinet will fall over at a faster speed when it is tilted, the present invention provides a combination of a sliding part and a follow-up limiting part supporting the sliding part, and connects the sliding part through a spring rebound part to achieve recovery of the connecting belt. By matching the limiting rod provided on the sliding part with the card slot located on one side of the limiting slot, the connecting belt can be separated from the follow-up limiting part and contact with the card slot to achieve limitation when the connecting belt is pulled quickly, thereby ensuring personnel safety. When the limit is triggered, it can be manually reset by a reset knob, and the sliding part can be driven to reset by winding the spring rebound part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 This is the overall structural diagram of the switch cabinet of the present invention.

[0020] Figure 2 This is a structural diagram of the emergency locking assembly of the present invention with the spring rebound device omitted.

[0021] Figure 3 This is a diagram showing the internal structure of the emergency locking assembly of the present invention.

[0022] Figure 4 It is a cross-sectional view of the internal structure of the emergency locking assembly of the present invention.

[0023] Figure 5 This is a structural diagram of the sliding assembly of the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] like Figures 1 to 5 As shown, a switch cabinet with a device to prevent a central cabinet 1 from tipping over comprises a central cabinet 1 slidably arranged in the switch cabinet through a slide rail and a secondary cabinet 2 arranged above the central cabinet 1, an operating handle 3 is arranged in the middle of the outer side of the central cabinet 1, and a fixed anti-tipping device is arranged near the edge position on the lower side of the secondary cabinet 2, the anti-tipping device comprises a connecting belt 4 and an emergency locking assembly 5, the emergency locking assembly 5 is fixedly installed on the switch cabinet through a mounting seat 6, one end of the connecting belt 4 is connected to the inside of the emergency locking assembly 5, and the other end is detachably mounted on the operating handle 3.

[0028] In order to achieve emergency stop of the sliding part when the force changes greatly, the emergency locking assembly 5 includes a housing 51, a spring cavity 52 with an opening is arranged in the middle of the housing 51, and a spiral sliding cavity 53 is arranged outside the spring cavity 52;

[0029] A spring rebound portion 56 is installed in the spring cavity 52, and a sliding assembly is provided in the sliding cavity 53. The sliding assembly includes a sliding portion 54 fixedly connected to the connecting belt 4 and a follower limiting portion 55 in contact with the sliding portion 54. The sliding portion 54 is fixedly connected to one end of the spring rebound portion 56 at one end away from the connecting belt 4.

[0030] The sliding cavity 53 includes a sliding groove 57 for the sliding part 54 to slide, and a limiting groove 58 for the following limiting part 55 to slide. The edge of the limiting groove 58 is provided with a clamping groove 59, and the side of the sliding part 54 is provided with a limiting column 60 matching the clamping groove 59.

[0031] In order to reduce sliding friction, at least two sliding wheels 61 are provided on the side of the sliding portion 54 contacting the sliding groove 57 , and at least two sliding wheels 61 are provided on the side of the follower limiting portion 55 contacting the limiting groove 58 .

[0032] In order to increase the friction between the sliding part and the follower limiting part, at least one rubber arc-shaped protrusion 62 is fixedly provided on the side where the sliding part 54 contacts the follower limiting part 55; at least two rubber sliding wheels 63 are provided on the side where the follower limiting part 55 contacts the sliding part 54, and the rubber arc-shaped protrusion 62 is embedded between the two rubber sliding wheels 63 and contacts the rubber sliding wheels 63 on both sides.

[0033] In order to realize the resetting of the follower limiting part, the starting end and the tail end of the limiting groove 58 are blocked, the follower limiting part 55 is initially in contact with the starting end, and a resetting spring 64 is arranged between the follower limiting part 55 and the tail end.

[0034] In order to achieve secondary limiting, the starting end of the sliding groove 57 is blocked, and the tail end is opened for the connecting belt 4 to slide in and out, and a limiting block 67 is provided at the outlet of the shell 51.

[0035] In order to reset the sliding part, a reset knob 65 is provided on the outer side of the housing 51 , penetrating through the housing 51 and fixedly connected to an end of the spring rebound part 56 away from the sliding part 54 .

[0036] In order to reduce the wear of the connecting belt, the mounting seat 6 is provided with a through groove for accommodating the connecting belt 4 to pass through, and a roller 66 is provided in the through groove, and the connecting belt 4 is in contact with the upper side of the roller 66 .

[0037] In order to connect the central cabinet more stably and conveniently, the connecting belt 4 and the operating handle 3 are detachably connected through a lock buckle 7 and a latch 8. The lock buckle 7 is fixedly arranged at the end of the connecting belt 4, and the latch 8 is fixedly arranged on the operating handle 3.

[0038] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0039] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A switch cabinet with a device for preventing a central cabinet from tipping over, comprising a central cabinet (1) slidably arranged in the switch cabinet via a slide rail and a secondary cabinet (2) arranged above the central cabinet (1), characterized in that: An operating handle (3) is provided in the middle of the outer side of the central cabinet (1), and a fixed anti-overturning device is provided near the edge of the lower side of the secondary cabinet (2), the anti-overturning device comprising a connecting belt (4) and an emergency locking assembly (5), the emergency locking assembly (5) being fixedly mounted on the switch cabinet via a mounting seat (6), one end of the connecting belt (4) being connected to the inside of the emergency locking assembly (5), and the other end being detachably mounted on the operating handle (3); The emergency locking assembly (5) comprises a housing (51), a spring cavity (52) with an opening is arranged in the middle of the housing (51), and a spiral sliding cavity (53) is arranged outside the spring cavity (52); A spring rebound portion (56) is installed in the spring cavity (52), a sliding assembly is provided in the sliding cavity (53), the sliding assembly comprising a sliding portion (54) fixedly connected to the connecting belt (4) and a follower limiting portion (55) in contact with the sliding portion (54), and an end of the sliding portion (54) away from the connecting belt (4) is fixedly connected to an end of the spring rebound portion (56); The sliding cavity (53) comprises a sliding groove (57) for the sliding portion (54) to slide, and a limiting groove (58) for the following limiting portion (55) to slide, a retaining groove (59) being provided at the edge of the groove wall of the limiting groove (58), and a limiting column (60) matching the retaining groove (59) being provided on the side surface of the sliding portion (54).

2. The switch cabinet with a device for preventing the central cabinet from tipping over according to claim 1, characterized in that: At least two sliding wheels (61) are provided on the side where the sliding portion (54) contacts the sliding groove (57), and at least two sliding wheels (61) are provided on the side where the follower limiting portion (55) contacts the limiting groove (58).

3. The switch cabinet with a device for preventing the central cabinet from tipping over according to claim 1 or 2, characterized in that: At least one rubber arc-shaped protrusion (62) is fixedly provided on the side where the sliding portion (54) contacts the follower limiting portion (55); at least two rubber sliding wheels (63) are provided on the side where the follower limiting portion (55) contacts the sliding portion (54); the rubber arc-shaped protrusion (62) is embedded between the two rubber sliding wheels (63) and contacts the rubber sliding wheels (63) on both sides.

4. The switch cabinet with a device for preventing the central cabinet from tipping over according to claim 3, characterized in that: The starting end and the tail end of the limit groove (58) are blocked, the follower limit portion (55) is in contact with the starting end in an initial state, and a return spring (64) is provided between the follower limit portion (55) and the tail end.

5. The switch cabinet with a device for preventing the middle cabinet from tipping over according to claim 4, characterized in that: The starting end of the sliding groove (57) is blocked, and the tail end is open for the connecting belt (4) to slide in and out. A limit block (67) is provided at the outlet of the housing (51).

6. The switch cabinet with a device for preventing the middle cabinet from tipping over according to claim 1, characterized in that: A reset knob (65) is provided on the outside of the housing (51) and penetrates the housing (51) and is fixedly connected to an end of the spring rebound portion (56) away from the sliding portion (54).

7. The switch cabinet with a device for preventing the middle cabinet from tipping over according to claim 1, characterized in that: The mounting seat (6) is provided with a through slot for accommodating the connection belt (4) to pass through, a roller (66) is provided in the through slot, and the connection belt (4) is in contact with the upper side of the roller (66).

8. The switch cabinet with a device for preventing the middle cabinet from tipping over according to claim 1, characterized in that: The connecting belt (4) and the operating handle (3) are detachably connected via a lock buckle (7) and a latch (8); the lock buckle (7) is fixedly arranged at the end of the connecting belt (4), and the latch (8) is fixedly arranged on the operating handle (3).

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