Generator field breaker arc chute handling device

Abstract

The utility model discloses a generator de -excitation switch arc extinguisher handling device, it includes walking type electric stacker truck and supplementary detection mechanism. Handling device adopts the combination design of walking type electric stacker truck and supplementary detection mechanism, and walking type structure adapts narrow operation space, avoids handling device and cabinet, wall knock, and detachable connection of cargo fork and car body is convenient for the maintenance replacement of cargo fork, reduces equipment maintenance cost, and counterweight can balance the weight of arc extinguisher, prevents handling device to dump, guarantees personal safety. Cargo fork can lift and width is adjustable, can adapt different size arc extinguisher and different installation height's de -excitation switch, and anti -collision positioning strip can definite cargo fork insertion depth, avoids the collision of cargo fork inside device of cabinet, protects the integrity of equipment, and minimum width lock mechanism can prevent the arc extinguisher from falling down in the process of handling that cargo fork interval becomes big, and pressure sensor can real -time detection cargo fork to the support pressure of arc extinguisher, avoids the damage of arc extinguisher that pressure is too big.

Description

Technical Field

[0001] This utility model relates to the technical field of maintenance equipment for large generators in nuclear power plants, and in particular to a device for transporting the arc-extinguishing cover of a generator demagnetizing switch. Background Technology

[0002] Currently, all 1000MW-class large generators in China use Gerapid DC fast circuit breakers as generator demagnetizing switches. According to industry standards, these large demagnetizing switches require regular maintenance. Furthermore, if any abnormality occurs during equipment operation, the arc-extinguishing cover must be removed to inspect the moving and stationary contacts. The static excitation system cabinets are all fixedly installed side-by-side and cannot be moved. Due to the large number of components, the demagnetizing switches are installed relatively compactly, close to the cabinet, with limited operating space. The arc-extinguishing cover weighs approximately 100KG and cannot be moved by hand. Existing handling methods are either impractical due to space constraints or prone to collisions with other components inside the cabinet or damage to the arc-extinguishing cover's paint. This is not only inefficient but also poses a dual risk of personnel injury and equipment damage. Therefore, a dedicated handling device is urgently needed to meet the requirements for safe and efficient maintenance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a generator demagnetizing switch arc extinguishing cover transport device.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a generator demagnetizing switch arc extinguishing cover transport device, which includes a pedestrian electric stacker and an auxiliary detection mechanism. The walk-behind electric stacker includes a vehicle body and a pair of forks detachably connected to the vehicle body. The vehicle body is equipped with a counterweight. The pair of forks can move up and down along the height direction of the vehicle body. The width between the pair of forks is adjustable. The forks are equipped with anti-collision positioning strips. A minimum width locking mechanism is connected between the pair of forks. The auxiliary detection mechanism includes a pressure sensor installed on the forks and an angle sensor installed on the arc-extinguishing cover of the demagnetizing switch.

[0005] In some embodiments, the bottom of the forks is provided with fixed wheels and swivel wheels, and the fixed wheels and swivel wheels adopt a three-wheel design, of which two are fixed wheels and one is a swivel wheel; The caster wheel is equipped with a self-locking device.

[0006] In some embodiments, the lifting height of the forks ranges from 85mm to 1500mm.

[0007] In some embodiments, the walk-behind electric stacker also includes a hydraulic device mounted on the vehicle body.

[0008] In some embodiments, the generator demagnetizing switch arc extinguishing cover handling device further includes a chain assembly, one end of which is connected to the hydraulic device and the other end of which is connected to the fork. The hydraulic device drives the extension and retraction of the chain assembly to achieve the lifting and lowering action of the fork.

[0009] In some embodiments, the operating area of ​​the vehicle body is provided with control buttons, which are electrically connected to the hydraulic device.

[0010] In some embodiments, the operating area of ​​the vehicle body is provided with a display.

[0011] In some embodiments, the minimum width locking mechanism includes a locking rod and a locking latch. When the spacing between a pair of forks is adjusted to the minimum spacing that adapts to the width of the arc extinguishing cover, the spacing between the pair of forks is locked by the cooperation of the locking rod and the locking latch.

[0012] In some embodiments, the forks are detachably connected to the vehicle body via a connecting frame, and the connecting frame is equipped with a camera.

[0013] In some embodiments, the fork surface is provided with an anti-slip pad layer.

[0014] The following are the beneficial effects of implementing this utility model: The generator demagnetizing switch arc extinguishing cover handling device adopts a combination design of a walk-behind electric stacker and an auxiliary detection mechanism. The walk-behind structure is suitable for narrow operating spaces, avoiding collisions between the handling device and the cabinet or walls. The forks are detachably connected to the vehicle body, facilitating fork maintenance and replacement, reducing equipment maintenance costs. The counterweight balances the weight of the arc extinguishing cover, preventing the handling device from tipping over and ensuring personal safety. The forks are height-adjustable and width-adjustable, adaptable to arc extinguishing covers of different sizes and demagnetizing switches of different installation heights. The anti-collision positioning strip clearly defines the fork insertion depth, preventing forks from colliding with internal components of the cabinet and protecting equipment integrity. The minimum width locking mechanism prevents the arc extinguishing cover from falling due to increased fork spacing during handling. The pressure sensor can detect the supporting pressure of the forks on the arc extinguishing cover in real time, preventing damage from excessive pressure or instability due to insufficient pressure. The tilt sensor can monitor the tilt angle of the arc extinguishing cover in real time, preventing excessive tilting from causing a falling accident. Dual detection further improves handling safety. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings: Figure 1 This is a three-dimensional structural schematic diagram of the generator demagnetizing switch arc extinguishing cover transport device in some embodiments of this utility model; Figure 2 yes Figure 1 Front view structural diagram; Figure 3 yes Figure 1 A top-view structural diagram; Figure 4 This is a schematic diagram of the installation of the tilt sensor in some embodiments of this utility model. Detailed Implementation

[0016] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0017] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" 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. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0018] Please see Figures 1 to 4This invention relates to a generator demagnetizing switch arc extinguishing cover transport device in some embodiments of the present invention, comprising a walk-behind electric stacker 1 and an auxiliary detection mechanism 2. The walk-behind electric stacker 1 includes a vehicle body 11 and a pair of forks 12 detachably connected to the vehicle body 11. The vehicle body 11 is provided with a counterweight 13. The pair of forks 12 can move up and down along the height direction of the vehicle body 11. The width between the pair of forks 12 is adjustable. The forks 12 are provided with anti-collision positioning strips 14. A minimum width locking mechanism 15 is connected between the pair of forks 12. The auxiliary detection mechanism 2 includes a pressure sensor 21 installed on the forks 12 and an angle sensor 22 installed on the demagnetizing switch arc extinguishing cover.

[0019] The pressure sensor 21 is installed on the upper surface of the forks 12 to detect the supporting pressure of the forks 12 on the arc-extinguishing cover in real time. When the pressure value exceeds the preset range, the pressure sensor 21 can issue a warning signal to remind the operator to adjust the operation mode. The tilt sensor 22 can detect the tilt angle of the arc-extinguishing cover during the handling process in real time and transmit the angle data to the display system. When the tilt angle exceeds the safe range, the display system can issue a warning to prevent the arc-extinguishing cover from falling due to excessive tilting. The arc-extinguishing cover that is compatible with the generator demagnetizing switch arc-extinguishing cover handling device weighs about 100KG, is about 632mm long, and is about 212mm wide.

[0020] Understandably, the generator demagnetizing switch arc extinguishing cover handling device adopts a combination design of a walk-through electric stacker 1 and an auxiliary detection mechanism 2. The walk-through structure is suitable for narrow operating spaces, avoiding collisions between the handling device and the cabinet or wall. The forks 12 and the vehicle body 11 are detachably connected, which facilitates the maintenance and replacement of the forks 12 and reduces equipment maintenance costs. The counterweight 13 can balance the weight of the arc extinguishing cover, prevent the handling device from tipping over, and ensure personal safety. The forks 12 are height-adjustable and width-adjustable, adaptable to arc-extinguishing covers of different sizes and demagnetizing switches of different installation heights. The anti-collision positioning strip 14 can clearly define the insertion depth of the forks 12, preventing the forks 12 from colliding with internal components of the cabinet and protecting the integrity of the equipment. The minimum width locking mechanism 15 can prevent the arc-extinguishing cover from falling due to the increased spacing between the forks 12 during handling. The pressure sensor 21 can detect the supporting pressure of the forks 12 on the arc-extinguishing cover in real time, preventing damage to the arc-extinguishing cover due to excessive pressure or instability of the arc-extinguishing cover due to insufficient pressure. The tilt sensor 22 can monitor the tilt angle of the arc-extinguishing cover in real time, preventing excessive tilting from causing a falling accident. Dual detection further improves handling safety.

[0021] The bottom of the fork 12 is equipped with fixed wheels and swivel wheels. The swivel wheels are located close to the vehicle body 11, while the fixed wheels are located away from the vehicle body 11. The swivel wheels are equipped with self-locking devices. Operators can flexibly adjust the device position by controlling the swivel wheels, reducing operational difficulty. The fixed wheels provide stable guidance for the fork 12, preventing it from shifting and colliding with the cabinet during transport. The self-locking devices on the swivel wheels lock the wheel assembly after the device reaches the designated position, preventing accidental movement and ensuring the stability of the device position during the assembly and disassembly of the arc extinguishing cover, further guaranteeing operational safety. More specifically, the fixed wheels and swivel wheels adopt a three-wheel design, with two fixed wheels and one swivel wheel.

[0022] The lifting height range of the fork 12 is 85mm to 1500mm, which allows the fork 12 to easily reach under the arc extinguishing cover to accommodate the gap between the bottom of the cabinet and the ground. The maximum height of 1500mm can meet the needs of carrying the arc extinguishing cover upward after it is taken out of the cabinet and avoiding obstacles on the top of the cabinet. It covers all the height requirements in the disassembly and assembly process of the arc extinguishing cover of the demagnetizing switch, without the need for additional lifting equipment, thus improving maintenance efficiency.

[0023] The walk-behind electric stacker 1 also includes a hydraulic device installed on the vehicle body 11. The hydraulic device is isolated from the operating area of ​​the stacker, which can prevent operators from accidentally touching the hydraulic components when controlling the device and prevent hydraulic oil leakage or hydraulic component failure from causing injury to the operators.

[0024] The operating area of ​​the vehicle body 11 is equipped with control buttons, which are electrically connected to the hydraulic system. Operators can precisely control the operation of the hydraulic system by pressing the control buttons, thereby adjusting the lifting speed and height of the forks 12. Compared with the traditional manual adjustment method, the operation is more convenient and precise.

[0025] The generator demagnetizing switch arc extinguishing cover handling device also includes a chain assembly. One end of the chain assembly is connected to the hydraulic device, and the other end is connected to the forks 12. The hydraulic device drives the extension and retraction of the chain assembly to achieve the lifting and lowering of the forks 12. As the transmission medium between the hydraulic device and the forks 12, the chain assembly can accurately transmit the driving force of the hydraulic device. Moreover, the chain drive has the characteristics of fixed transmission ratio and strong load-bearing capacity, which can adapt to the weight requirement of the arc extinguishing cover of about 100KG, and avoid the forks 12 from jamming or the arc extinguishing cover falling due to transmission slippage.

[0026] The operating area of ​​the vehicle body 11 is equipped with a display 16, which can display in real time the data collected by the auxiliary detection mechanism 2 such as the pressure sensor 21 and the tilt sensor 22, as well as the relative position images of the forks 12, the arc extinguishing cover, and the cabinet captured by the camera 17. The operator can clearly grasp the handling status through the display 16 without having to observe the situation at the fork 12 end at close range.

[0027] The minimum width locking mechanism 15 includes a locking rod 151 and a locking latch 152. When the distance between a pair of forks 12 is adjusted to the minimum distance suitable for the width of the arc extinguishing cover, the distance between the pair of forks 12 can be locked by the cooperation of the locking rod 151 and the locking latch 152. This structure is simple, reliable, and easy to operate. It can effectively prevent the distance between the forks 12 from increasing due to vibration and bumps during handling, and prevent the arc extinguishing cover from slipping off between the forks 12, thus ensuring the stability and safety of the arc extinguishing cover during handling.

[0028] The forks 12 are detachably connected to the vehicle body 11 via a connecting bracket 18, on which a camera 17 is mounted. The camera 17 can capture real-time images of the contact between the forks 12 and the arc extinguishing cover and the cabinet, especially in blind spots. The camera 17 provides the operator with a clear view, preventing the forks 12 from colliding with components inside the cabinet or the arc extinguishing cover, thus improving operational accuracy.

[0029] The surface of the fork 12 is provided with an anti-slip pad layer. The anti-slip pad layer on the surface of the fork 12 can increase the friction between the fork 12 and the arc extinguishing cover, prevent the arc extinguishing cover from sliding on the fork 12, and avoid the arc extinguishing cover from shifting position or falling off due to sliding. At the same time, the anti-slip pad layer is made of soft material, which can prevent the fork 12 from making hard contact with the arc extinguishing cover, prevent the paint surface of the arc extinguishing cover from being scratched and damaged, and protect the appearance and structural integrity of the arc extinguishing cover.

[0030] The vehicle body 11 and forks 12 are coated with an anti-corrosion coating, which can effectively resist the erosion of the device by factors such as humidity and corrosive gases in the nuclear power plant environment, prevent the vehicle body 11 and forks 12 from rusting and corroding, and extend the service life of the device.

[0031] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A device for transporting the arc-extinguishing cover of a generator demagnetizing switch, characterized in that, Includes a pedestrian-operated electric stacker (1) and an auxiliary testing mechanism (2); The walk-behind electric stacker (1) includes a vehicle body (11) and a pair of forks (12) detachably connected to the vehicle body (11). The vehicle body (11) is provided with a counterweight (13). The pair of forks (12) can move up and down along the height direction of the vehicle body (11). The width between the pair of forks (12) is adjustable. The forks (12) are provided with anti-collision positioning strips (14). The pair of forks (12) are connected by a minimum width locking mechanism (15). The auxiliary detection mechanism (2) includes a pressure sensor (21) installed on the fork (12) and an angle sensor (22) installed on the arc extinguishing cover of the demagnetizing switch.

2. The generator demagnetizing switch arc-extinguishing cover transport device according to claim 1, characterized in that, The bottom of the fork (12) is provided with fixed wheels and swivel wheels. The fixed wheels and swivel wheels adopt a three-wheel design, of which two are fixed wheels and one is a swivel wheel. The caster wheel is equipped with a self-locking device.

3. The generator demagnetizing switch arc-extinguishing cover transport device according to claim 1, characterized in that, The lifting height range of the forks (12) is 85mm to 1500mm.

4. The generator demagnetizing switch arc-extinguishing cover transport device according to claim 1, characterized in that, The walk-behind electric stacker (1) also includes a hydraulic device mounted on the vehicle body (11).

5. The generator demagnetizing switch arc-extinguishing cover transport device according to claim 4, characterized in that, The generator demagnetizing switch arc extinguishing cover transport device also includes a chain assembly. One end of the chain assembly is connected to the hydraulic device, and the other end is connected to the fork (12). The hydraulic device drives the extension and retraction of the chain assembly to realize the lifting and lowering action of the fork (12).

6. The generator demagnetizing switch arc extinguishing cover transport device according to claim 4, characterized in that, The operating area of ​​the vehicle body (11) is provided with control buttons, which are electrically connected to the hydraulic device.

7. The generator demagnetizing switch arc-extinguishing cover transport device according to claim 1, characterized in that, The operating area of ​​the vehicle body (11) is equipped with a display (16).

8. The generator demagnetizing switch arc extinguishing cover transport device according to claim 1, characterized in that, The minimum width locking mechanism (15) includes a locking rod (151) and a locking buckle (152). When the distance between a pair of forks (12) is adjusted to the minimum distance that is compatible with the width of the arc extinguishing cover, the distance between the pair of forks (12) is locked by the cooperation of the locking rod (151) and the locking buckle (152).

9. The generator demagnetizing switch arc-extinguishing cover transport device according to claim 1, characterized in that, The forks (12) are detachably connected to the vehicle body (11) via a connecting frame (18), and a camera (17) is provided on the connecting frame (18).

10. The generator demagnetizing switch arc-extinguishing cover transport device according to claim 1, characterized in that, The forks (12) are provided with an anti-slip pad layer on their surface.

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