Large-scale circuit breaker rapid replacement device used in low-voltage power distribution system

Abstract

According to the large-scale circuit breaker rapid replacement device used in the low-voltage power distribution system, rolling translation devices used for supporting a circuit breaker in a rolling mode are installed on the two sides of the upper plane of a lifting trolley, and an angle adjusting device installed at the front end of the middle of the upper plane of the lifting trolley is located between the two rolling translation devices. When the height of the lifting trolley is adjusted to be flush with the circuit breaker, the pulled-out circuit breaker is located on the front half section of the rolling translation device, the inclination angle of the circuit breaker is adjusted through lifting and rotation of the angle adjusting device, and the circuit breaker is translated to the rolling translation device; and the circuit breaker of the lifting trolley is moved out of the low-voltage power distribution cabinet through a push rod at the rear end of the lifting trolley. According to the utility model, the problem that potential safety hazards exist in the process of pulling out and carrying the circuit breaker in a manual replacement mode is solved, the labor intensity of replacing the circuit breaker is reduced, the potential safety hazards caused by improper operation of personnel are eliminated, the working efficiency is improved, the power failure time for maintaining and repairing the circuit breaker is shortened, and the power supply reliability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of component replacement auxiliary tools, and in particular relates to a large circuit breaker quick replacement device used in a low-voltage power distribution system. Background Art

[0002] With the national energy conservation and environmental protection requirements, especially after the coal-to-electricity conversion, the power load of various production enterprises has increased dramatically, and the low-voltage circuit breakers supporting large-scale power equipment have been continuously expanded and transformed in the enterprise distribution system. Therefore, the usage data of large low-voltage circuit breakers in low-voltage distribution cabinets has also increased significantly. Due to the characteristics of large size and weight of circuit breakers, it is very inconvenient for distribution technicians to replace such large circuit breakers. The traditional way of replacing short-circuit breakers is generally 2 to 3 people to pull out the circuit breaker from the distribution cabinet and transport it to the maintenance platform by manpower. This method is not only time-consuming and labor-intensive, but also has certain safety hazards. Especially during the extraction and transportation process, there is a risk of electric shock to personnel, and there is also a risk of personnel being injured during the transportation process. At the same time, the work efficiency is low, and the power outage time will increase during the maintenance process. Therefore, it is necessary to improve the above problems. Utility Model Content

[0003] The technical problem solved by the utility model is as follows: a device for quickly replacing large circuit breakers in a low-voltage power distribution system is provided. A rolling translation device and an angle adjustment device are arranged on a lifting trolley to provide a rolling support and a moving structure with adjustable height and angle for the circuit breaker, thereby solving the problem of unsafe hidden dangers in the process of extracting and carrying the circuit breaker in a manual replacement mode, reducing the labor intensity of replacing the circuit breaker, eliminating the risk hidden dangers caused by improper operation of personnel, improving work efficiency, shortening the time for replacing the circuit breaker, reducing the power outage time for maintaining and repairing the circuit breaker, and improving the power supply reliability. The utility model is not only used for replacing low-voltage circuit breakers in power distribution, but can also be used alone as a translation and upgrading device in the process of replacing other large equipment.

[0004] The technical solution adopted by the utility model is as follows: a large circuit breaker quick replacement device for a low-voltage power distribution system comprises a lifting trolley, rolling and translation devices for rolling and supporting the circuit breaker are installed on both sides of the upper plane of the lifting trolley, and an angle adjustment device installed at the front end of the middle part of the upper plane of the lifting trolley is located between the two groups of rolling and translation devices. When the height of the lifting trolley is adjusted to be level with the circuit breaker, the drawn circuit breaker is located in the front half of the rolling and translation device, and the adjustment of the inclination angle of the circuit breaker is achieved by lifting and rotating the angle adjustment device. The circuit breaker is translated onto the rolling and translation device, and the circuit breaker of the lifting trolley is moved out of the low-voltage power distribution cabinet by a push rod at the rear end of the lifting trolley.

[0005] Among them, the rolling translation device includes two groups of parallel arranged fluent roller rails, the fluent roller rails are fixed to the upper plane of the lifting trolley by bolts, and the front end of the upper plane of the lifting trolley is fixed with an L-shaped front baffle plate whose horizontal plane is located at the bottom of the front end of the fluent roller rails, and the two long sides of the upper plane of the lifting trolley are fixed with L-shaped side baffle plates located on the outside of the fluent roller rails at corresponding positions.

[0006] Furthermore, the angle adjustment device includes a worm gear screw hoist, which is installed at the front end of the middle part of the upper plane of the lifting trolley, and the screw of the worm gear screw hoist passes through the upper plane of the lifting trolley. A screw that is adapted to be connected to the worm gear screw hoist is rotatably installed on the front side wall of the lifting trolley, and a handwheel is fixed to the outer end of the screw, and the lifting and rotation control of the lifting flange at the upper end of the worm gear screw hoist is achieved by rotating the handwheel.

[0007] Furthermore, the lifting trolley adopts a manual hydraulic platform trolley.

[0008] The advantages of this utility model compared with the prior art:

[0009] 1. This technical solution provides a rolling translation device and an angle adjustment device on the lifting trolley to provide a height- and angle-adjustable rolling support and mobile structure for the circuit breaker, thereby solving the problem of unsafe hidden dangers in the process of extracting and transporting the circuit breaker in the manual replacement method, reducing the labor intensity of circuit breaker replacement, and eliminating the risk of improper operation by personnel;

[0010] 2. This technical solution improves work efficiency, shortens the time for replacing circuit breakers, reduces the power outage time for maintenance and repair of circuit breakers, and improves power supply reliability;

[0011] 3. This technical solution has a simple structure, novel design, and is convenient and flexible to use. It is not only used for replacing low-voltage circuit breakers for power distribution, but can also be used alone for translation and upgrading during the replacement of other large equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 This is a front view of the component structure of the utility model installed on the upper plane of the lifting trolley;

[0014] Figure 3 It is a bottom view of the component structure of the utility model installed on the upper plane of the lifting trolley. DETAILED DESCRIPTION

[0015] The following will be combined with the embodiment of the present utility model Figure 1-3, clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 limiting the present invention. In addition, the terms "first", "second", "third", etc., are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0017] In this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further limitations. The elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0018] Used for quick replacement of large circuit breakers in low voltage power distribution systems, such as Figure 1-3As shown, it includes a lifting trolley 1, and rolling and translation devices for rolling and supporting the circuit breaker are installed on both sides of the upper plane of the lifting trolley 1, and the angle adjustment device installed at the front end of the middle of the upper plane of the lifting trolley 1 is located between the two groups of rolling and translation devices. When the height of the lifting trolley 1 is adjusted to be level with the circuit breaker, the withdrawn circuit breaker is located in the front half of the rolling and translation device, and the tilt angle of the circuit breaker is adjusted by lifting and rotating the angle adjustment device. The circuit breaker is translated onto the rolling and translation device, and the circuit breaker of the lifting trolley 1 is moved out of the low-voltage distribution cabinet by the push rod 2 at the rear end of the lifting trolley 1; In the above structure, by arranging a rolling translation device and an angle adjustment device on the lifting trolley, a rolling support and a moving structure with adjustable height and angle are provided for the circuit breaker, thereby solving the problem of unsafe hidden dangers in the process of extracting and carrying the circuit breaker in the manual replacement method, and reducing the labor intensity of circuit breaker replacement. Originally, three people were required to replace a circuit breaker once, but now only one person is required to complete the replacement with the help of this device, eliminating the risk of improper operation by personnel, improving work efficiency, shortening the time for replacing the circuit breaker, reducing the power outage time for maintenance and repair of the circuit breaker, and improving power supply reliability;

[0019] The specific structure of the rolling and translation device is as follows: the rolling and translation device includes two groups of parallel arranged smooth roller rails 3, the smooth roller rails 3 are fixed to the upper plane of the lifting trolley 1 by bolts, and the front end of the upper plane of the lifting trolley 1 is fixed with an L-shaped front baffle plate 4 whose horizontal plane is located at the bottom of the front end of the smooth roller rails 3, and the two long sides of the upper plane of the lifting trolley 1 are fixed with L-shaped side baffle plates 5 located at the outer sides of the smooth roller rails 3 at corresponding positions. The setting of the L-shaped side baffle plates 5 and the L-shaped front baffle plate 4 plays a role of limiting protection during the disassembly and assembly of the circuit breaker, thereby improving safety and reliability.

[0020] The specific structure of the angle adjustment device is as follows: the angle adjustment device includes a worm gear screw hoist 6, which is installed at the front end of the middle part of the upper plane of the lifting trolley 1, and the screw of the worm gear screw hoist 6 passes through the upper plane of the lifting trolley 1, and a screw that is adapted to be connected to the worm gear screw hoist 6 is rotatably installed on the front side wall of the lifting trolley 1, and a handwheel 7 is fixed to the outer end of the screw, and the lifting and rotation control of the upper end lifting flange of the worm gear screw hoist 6 is realized by rotating the handwheel 7.

[0021] Wherein, the lifting trolley 1 adopts a manual hydraulic platform trolley.

[0022] When using this device to extract, lift the upper platform of the lifting trolley 1 to a position flush with the low-voltage circuit breaker, pull the circuit breaker out to the platform, adjust the angle of the circuit breaker by shaking the hand wheel, unlock the buckle between the circuit breaker and the cabinet slide, lower the circuit breaker on the rolling support of the smooth roller slide rail 3 and extract it again, then restore the inclination angle of the circuit breaker, and finally move the circuit breaker horizontally to the lifting trolley 1 to completely detach it from the low-voltage distribution cabinet; when using this device to install the circuit breaker, the steps are opposite to those for extraction.

[0023] The technical solution has a simple structure, novel design, and convenient and flexible use. It is not only used for replacing low-voltage circuit breakers for power distribution, but can also be used alone for translation and upgrading during the replacement of other large equipment.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A large circuit breaker quick replacement device for a low voltage power distribution system, characterized in that: The invention comprises a lifting trolley (1), wherein rolling and translation devices for rolling and supporting a circuit breaker are installed on both sides of the upper plane of the lifting trolley (1), and an angle adjustment device installed at the front end of the middle part of the upper plane of the lifting trolley (1) is located between the two groups of rolling and translation devices. When the height of the lifting trolley (1) is adjusted to be level with the circuit breaker, the circuit breaker to be drawn out is located in the front half of the rolling and translation device, and the tilt angle of the circuit breaker is adjusted by lifting and rotating the angle adjustment device. The circuit breaker is translated onto the rolling and translation device, and the circuit breaker of the lifting trolley (1) is moved out of the low-voltage distribution cabinet by a push rod (2) at the rear end of the lifting trolley (1).

2. The large circuit breaker quick replacement device for a low voltage power distribution system according to claim 1, characterized in that: The rolling translation device comprises two sets of parallel fluent roller rails (3), the fluent roller rails (3) being fixed to the upper plane of the lifting trolley (1) by means of bolts, and an L-shaped front baffle plate (4) whose horizontal plane is located at the bottom of the front end of the fluent roller rails (3) is fixed to the front end of the upper plane of the lifting trolley (1), and L-shaped side baffle plates (5) located at corresponding positions on the outer sides of the fluent roller rails (3) are fixed to the two long sides of the upper plane of the lifting trolley (1).

3. The large circuit breaker quick replacement device for a low voltage power distribution system according to claim 1, characterized in that: The angle adjustment device comprises a worm gear screw hoist (6), the worm gear screw hoist (6) is installed at the front end of the middle part of the upper plane of the lifting trolley (1), and the screw of the worm gear screw hoist (6) passes through the upper plane of the lifting trolley (1), a screw rod adapted to be connected to the worm gear screw hoist (6) is rotatably installed on the front side wall of the lifting trolley (1), and a hand wheel (7) is fixed to the outer end of the screw rod, and the lifting and rotation control of the upper end lifting flange of the worm gear screw hoist (6) is realized by rotating the hand wheel (7).

4. The large circuit breaker quick replacement device for a low voltage power distribution system according to claim 1, 2 or 3, characterized in that: The lifting trolley (1) is a manual hydraulic platform trolley.

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