Trolley special for maintenance

Abstract

The utility model discloses a special trolley for maintenance. The special trolley comprises a supporting chassis; the supporting frame is arranged at the top of the supporting chassis, the supporting frame comprises a plurality of supporting vertical rods, and a connecting plate is fixedly connected between every two adjacent supporting vertical rods; the supporting angle iron is arranged above the supporting vertical rod in a lifting mode, a limiting plate used for adjusting the width is arranged in the supporting angle iron in a sliding mode, and a jack used for driving the supporting angle iron to ascend and descend is arranged at the top of the supporting chassis; the beneficial effects of the utility model are that through the design of the second adjusting bolt and the third adjusting bolt, the height and the position of the limiting pressing plate can be flexibly adjusted so as to adapt to circuit breakers with different sizes and shapes; the adaptability and the universality of the trolley are improved, so that the trolley can be used for various types of circuit breakers; the limiting pressing plate is matched with the supporting angle iron, so that the circuit breaker can be firmly fixed on the trolley, the circuit breaker is prevented from moving or toppling over in the transportation process, and smooth maintenance work is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage circuit breaker maintenance technology, specifically a special maintenance trolley. Background Technology

[0002] High-voltage circuit breakers, also known as high-voltage switches, can cut off the no-load current and load current in high-voltage circuits. In practical use, they are used in conjunction with relay protection devices. When a system fault occurs, they can quickly cut off the fault current to prevent the accident from spreading.

[0003] Explosion-proof high-voltage switchgear is a common power distribution device in underground coal mine power supply systems. It consists of two main parts: the cabinet and the circuit breaker. In routine maintenance, the inspection and maintenance of the circuit breaker is particularly important. During circuit breaker maintenance, the inspection and maintenance of contacts and some electrical components require pulling the circuit breaker trolley out of the cabinet. Due to space limitations within the cabinet and the weight of the circuit breaker trolley, the maintenance work is more difficult and physically demanding for maintenance personnel. Utility Model Content

[0004] The purpose of this utility model is to provide a special maintenance trolley to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a special maintenance trolley, comprising:

[0006] Support chassis;

[0007] A support frame is placed on top of the support chassis. The support frame includes multiple support vertical rods, and connecting plates are fixed between adjacent support vertical rods.

[0008] The supporting angle iron is positioned above the supporting vertical rod. A limiting plate for adjusting the width is slidably installed inside the supporting angle iron. A jack for driving the lifting and lowering of the supporting angle iron is located on the top of the supporting chassis.

[0009] The limiting pressure plate is raised and lowered above the support chassis and is used to press and limit the circuit breaker from the top.

[0010] Preferably, the four bottom corners of the supporting chassis are rotatably connected with self-locking wheels.

[0011] Preferably, there are four supporting vertical rods fixed to the four corners of the top of the supporting chassis, and the connecting plate is a U-shaped structure fixed to the outside of the supporting vertical rods.

[0012] Preferably, two fixing tubes are fixedly connected to the outer side of the connecting plate, and a support rod is slidably connected to the middle of each of the two fixing tubes. A support crossbar is fixedly connected to the bottom of the support rod, and the support crossbar is fixedly connected to the output end of the jack.

[0013] Preferably, the supporting angle iron is fixed to the top of the supporting rod, and an adjusting bolt is threadedly connected to the middle of the supporting angle iron, the adjusting bolt being rotatably connected to the limiting plate.

[0014] Preferably, a fixing tube 2 is fixedly connected to the middle of the connecting plate, a lifting slide rod is slidably connected inside the fixing tube 2, a connecting sleeve is sleeved on the outside of the lifting slide rod, the connecting sleeve is fixedly connected to the limiting pressure plate, and an adjusting bolt 2 for fixing the position of the connecting sleeve is threadedly connected to one side of the connecting sleeve.

[0015] Preferably, one side of the top of the fixed tube is threaded with an adjusting bolt three, which is used to press and fix the height of the lifting slide rod.

[0016] Compared with existing technologies, the beneficial effects of this utility model are as follows: The jack design allows for precise adjustment of the height of the supporting angle iron to accommodate circuit breaker trolleys of different heights; this not only enables the trolley to easily lift the circuit breaker from the guide rail but also ensures stability during maintenance or movement; the sliding limit plate inside the supporting angle iron, and the width adjustment via adjusting bolt one, further enhance the stability of the circuit breaker during transportation, preventing it from shaking or tipping over; the design of adjusting bolts two and three allows for flexible adjustment of the height and position of the limiting pressure plate to accommodate circuit breakers of different sizes and shapes; this improves the adaptability and versatility of the trolley, enabling it to be used with various types of circuit breakers; the cooperation between the limiting pressure plate and the supporting angle iron firmly fixes the circuit breaker to the trolley, preventing movement or tipping over during transportation and ensuring smooth maintenance work. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the jack of this utility model;

[0019] Figure 3 This is an enlarged view of section A of this utility model;

[0020] Figure 4 This is an enlarged view of section B of this utility model.

[0021] In the diagram: 1. Support chassis; 2. Self-locking wheel; 3. Connecting plate; 4. Fixing pipe one; 5. Support angle iron; 6. Limiting plate; 7. Adjusting bolt one; 8. Support rod; 9. Fixing pipe two; 10. Lifting slide bar; 11. Limiting pressure plate; 12. Support crossbar; 13. Jack; 14. Connecting sleeve; 15. Adjusting bolt two; 16. Adjusting bolt three; 17. Support vertical rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , 2 As shown in Figures 3 and 4, this utility model provides a technical solution: a special maintenance trolley, comprising: a stainless steel support chassis 1; a support frame welded to the top of the support chassis 1, the support frame including multiple support vertical rods 17, and a connecting plate 3 welded between adjacent support vertical rods 17; a support angle iron 5 raised and lowered above the support vertical rods 17, a limiting plate 6 for adjusting the width slidably disposed inside the support angle iron 5, and a jack 13 on the top of the support chassis 1 for driving the support angle iron 5 to rise and fall; and a limiting pressure plate 11 raised and lowered above the support chassis 1 for pressing and limiting the circuit breaker from the top.

[0024] It should be noted that in this invention, the circuit breaker trolley is pulled out of the cabinet. By operating the jack 13, the supporting angle iron 5 of the trolley moves up and down. When the supporting angle iron 5 of the high-voltage circuit breaker maintenance trolley reaches the placement height of the high-voltage circuit breaker trolley, the supporting angle iron 5 is moved below the trolley. The jack 13 is then operated to slowly raise the high-voltage circuit breaker trolley, eventually moving it away from the high-voltage circuit breaker trolley guide rail. Finally, the trolley guide rail is pushed into the cabinet, and the limiting pressure plate 11 is adjusted downwards so that the limiting pressure plate 11 is pressed against the top of the circuit breaker, thereby fixing the circuit breaker between the limiting pressure plate 11 and the supporting angle iron 5. During the transportation process, the circuit breaker tilts.

[0025] Please see Figure 1 , 2 As shown, the four corners of the bottom of the supporting chassis 1 are rotatably connected to self-locking wheels 2.

[0026] It should be noted that the present invention can move the support chassis 1 to a designated position by means of the self-locking wheel 2. During operation, the self-locking wheel 2 prevents movement when getting off the vehicle during loading and unloading, thereby increasing the flexibility and safety of the vehicle.

[0027] Please see Figure 1 , 2 As shown, there are four support rods 17, which are fixed to the four corners of the top of the support base 1, and the connecting plate 3 is a U-shaped structure fixed to the outside of the support rods 17.

[0028] It should be noted that the two U-shaped connecting plates 3 and four supporting vertical rods 17 of this utility model are combined to form a frame with an opening on one side, which allows the circuit breaker to be moved above the supporting angle iron 5.

[0029] Please see Figure 1 , 2 As shown, two fixed tubes 4 are fixedly connected to the outer side of the connecting plate 3. Support rods 8 are slidably connected to the middle of the two fixed tubes 4. Support crossbars 12 are fixedly connected to the bottom of the support rods 8. Support crossbars 12 are fixedly connected to the output end of the jack 13.

[0030] It should be noted that when adjusting the height of the support angle iron 5, the jack 13 is pressed to lift the support crossbar 12, which in turn lifts the support rods 8 at both ends, which in turn lifts the support angle iron 5, thereby lifting the circuit breaker placed above the support angle iron 5.

[0031] Please see Figure 1 , 2 As shown, the support angle iron 5 is fixed to the top of the support rod 8, and the middle of the support angle iron 5 is threaded with an adjusting bolt 7, which is rotatably connected to the limiting plate 6.

[0032] It should be noted that, according to the size and width of the circuit breaker, this utility model adjusts the limiting plate 6 to move inward by rotating the adjusting bolt 7, so that the limiting plate 6 fits against the side of the circuit breaker, thereby ensuring the stability of the circuit breaker during transportation.

[0033] Please see Figure 3 , 4 As shown, a fixing tube 2 9 is fixedly connected to the middle of the connecting plate 3. A lifting slide rod 10 is slidably connected inside the fixing tube 2 9. A connecting sleeve 14 is sleeved on the outside of the lifting slide rod 10. The connecting sleeve 14 is fixedly connected to the limiting pressure plate 11. An adjusting bolt 2 15 for fixing the position of the connecting sleeve 14 is threadedly connected to one side of the connecting sleeve 14. An adjusting bolt 3 16 is threadedly connected to one side of the top of the fixing tube 2 9 for pressing and fixing the height of the lifting slide rod 10.

[0034] It should be noted that after adjusting the height of the connecting sleeve 14 by adjusting the second adjusting bolt 15, the second adjusting bolt 15 is tightened, and the connecting sleeve 14 is fixed in the designated position by compression, so that the limiting pressure plate 11 is fixed with the lifting slide rod 10. By rotating the third adjusting bolt 16, the end of the third adjusting bolt 16 is separated from the lifting slide rod 10, so that the lifting slide rod 10 can move inside the second fixing tube 9. When the limiting pressure plate 11 is in contact with the top of the circuit breaker, rotating the third adjusting bolt 16 causes the third adjusting bolt 16 to compress and fix the lifting slide rod 10 inside the second fixing tube 9.

[0035] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Furthermore, the terms "first," "second," "third," and "fourth" 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," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", 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 connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A special maintenance trolley, characterized in that: include: Support chassis (1); A support frame is placed on top of the support chassis (1). The support frame includes multiple support vertical rods (17), and a connecting plate (3) is fixed between adjacent support vertical rods (17). The support angle iron (5) is raised and lowered above the support vertical rod (17). The support angle iron (5) is slidably provided with a limiting plate (6) for adjusting the width. The top of the support chassis (1) has a jack (13) for driving the support angle iron (5) to rise and fall. Limiting pressure plate (11) is raised and lowered above the supporting chassis (1) to press and limit the circuit breaker from the top.

2. The maintenance trolley according to claim 1, characterized in that: The four corners of the bottom of the supporting chassis (1) are rotatably connected to self-locking wheels (2).

3. The maintenance trolley according to claim 1, characterized in that: The supporting vertical rods (17) are provided in four parts and fixed to the four corners of the top of the supporting chassis (1). The connecting plate (3) is a U-shaped structure and fixed to the outside of the supporting vertical rods (17).

4. The maintenance trolley according to claim 1, characterized in that: Two fixed tubes (4) are fixedly connected to the outer side of the connecting plate (3). A support rod (8) is slidably connected to the middle of each of the two fixed tubes (4). A support crossbar (12) is fixedly connected to the bottom of the support rod (8). The support crossbar (12) is fixedly connected to the output end of the jack (13).

5. A special maintenance trolley according to claim 4, characterized in that: The supporting angle iron (5) is fixed to the top of the supporting rod (8), and the middle part of the supporting angle iron (5) is threaded with an adjusting bolt (7), which is rotatably connected to the limiting plate (6).

6. The maintenance trolley according to claim 1, characterized in that: A fixing tube 2 (9) is fixedly connected to the middle of the connecting plate (3). A lifting slide rod (10) is slidably connected inside the fixing tube 2 (9). A connecting sleeve (14) is sleeved on the outside of the lifting slide rod (10). The connecting sleeve (14) is fixedly connected to the limiting pressure plate (11). An adjusting bolt 2 (15) for fixing the position of the connecting sleeve (14) is threadedly connected to one side of the connecting sleeve (14).

7. A special maintenance trolley according to claim 6, characterized in that: One side of the top of the fixed tube 2 (9) is threaded with an adjusting bolt 3 (16) for pressing and fixing the height of the lifting slide rod (10).

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