A quick-fit fence device for maintenance

Abstract

The utility model relates to the technical field of water turbine unit maintenance, and specifically discloses a kind of maintenance quick-mounting fence device, comprising: first fence, second fence, third fence, fourth fence and fifth fence are sequentially detachably connected, the lower end of first fence, second fence, third fence and fifth fence is provided with switch magnetic force seat, third fence and fourth fence are connected by self-closing hinge.The utility model reliably fixes fence device on generator upper cover plate by the switch magnetic force seat of the lower end of first fence, second fence, third fence and fifth fence, enables fourth fence to be self-closing after being opened by self-closing hinge, realizes quick installation and disassembly by cross buckle, solves the unreliable fixation of existing isolation fence and generator upper cover plate, the unreliable locking between fence assembly, the inconvenient personnel access switch isolation fence, leading to the problem of poor isolation effect.

Description

Technical Field

[0001] This utility model relates to the field of hydropower unit maintenance technology, and specifically discloses a quick-installation maintenance fence device. Background Technology

[0002] In the design of hydroelectric generating units, to facilitate subsequent maintenance personnel accessing the generator rotor for inspection and repair, access holes are typically designed into the generator cover plate. These access holes allow maintenance personnel to easily enter the rotor for tasks such as rotor pole inspection, stator bar end inspection, electrical testing, cleaning, and tidying. Besides ensuring maintenance efficiency and economy, the access holes also consider the sealing and protection during hydroelectric unit operation. Therefore, the access holes are equipped with a sturdy, sealed cover. During operation, the cover is strictly closed and secured, maintaining the internal cooling air circulation path of the generator, preventing foreign objects from falling in, and reducing operating noise.

[0003] During the overhaul and maintenance of hydropower units, in order to ensure the safety of personnel and equipment, it is usually necessary to set up an isolation fence around the access hole of the generator top cover. The isolation fence, together with the wind tunnel duty personnel to complete the wind tunnel entry and exit registration procedures, can not only effectively isolate the maintenance and construction area to prevent unauthorized personnel from accidentally entering or falling to the rotor and causing accidents, but also effectively control the tools, materials and other items brought into the rotor to prevent foreign objects from being left on the rotor and avoid serious accidents such as scratches, short circuits, insulation damage, or even generator burnout caused by the hydropower unit during operation.

[0004] Because the generator cover plate lacks holes or other accessories for fixing the isolation fence, the isolation fence used is usually a placement-type assembly fence. The isolation fence lacks reliable fixation to the generator cover plate, and the isolation fence itself is easy to fall into the access hole under the action of external force. In addition, the assembly method of the isolation fence is simple, and unauthorized personnel can dismantle it at will and enter the access hole, resulting in poor isolation effect.

[0005] Currently, the main solution to the problem of ineffective isolation of the generator top cover access gate enclosure is to use ropes or cable ties to lock two adjacent enclosure components after the enclosure is assembled, and to use tape to secure the enclosure legs. While this method prevents unauthorized personnel from disassembling the enclosure and entering above the rotor to some extent, and avoids enclosure components falling onto the rotor under external force, the use of non-standard fasteners such as ropes, cable ties, and tape for locking and reinforcing the enclosure leads to problems such as unreliable locking between enclosure components, unreliable fixing of the enclosure to the generator top cover, and inconvenience for personnel to access the enclosure.

[0006] Therefore, there is an urgent need to design a quick-installation fence structure for the maintenance of hydro-generator rotors, which can reliably fix the fence to the generator top cover without changing the foundation structure of the generator top cover, ensure reliable locking between fence components, effectively isolate the access hole, facilitate personnel access to the switch isolation fence, and enable quick installation and disassembly, thereby improving the safety and efficiency of maintenance. Utility Model Content

[0007] The purpose of this utility model is to provide a quick-installation maintenance fence device to solve the problems of unreliable fixing of existing isolation fences to generator top covers, unreliable locking between fence components, and inconvenient personnel access control of the isolation fence, resulting in poor isolation effect.

[0008] The specific solution of this utility model is as follows: A quick-installation maintenance fencing device includes: The first, second, third, fourth, and fifth fences are detachably connected in sequence. Each of the first, second, third, and fifth fences is equipped with a switch magnetic base at its lower end. The third and fourth fences are connected by a self-closing hinge.

[0009] Preferably, the switch magnetic base includes a magnetic base, a magnetic pole mounting angle aluminum, a plurality of first fixing bolts and a plurality of first fixing nuts. The magnetic pole mounting angle aluminum includes a first magnetic pole mounting angle aluminum and a second magnetic pole mounting angle aluminum. The first fence, the second fence, the third fence and the fifth fence all include a guardrail and a kick plate. The lower end of the guardrail is fixedly connected to the kick plate. The first fixing bolt passes through the first magnetic pole mounting angle aluminum and the kick plate in sequence and is connected to the first fixing nut. The first fixing bolt passes through the second magnetic pole mounting angle aluminum and the magnetic base in sequence and is connected to the second fixing nut.

[0010] Preferably, the self-closing hinge includes a hinge body, multiple flat washers, multiple second fixing bolts, and multiple second fixing nuts. First and second hinge angle aluminum plates are symmetrically arranged on both sides of the hinge body. The second fixing bolts pass sequentially through the flat washers, the first hinge angle aluminum plates, the hinge body, the second hinge angle aluminum plates, and the flat washers before connecting to the second fixing nuts. The second fixing bolts also pass sequentially through the flat washers, the first hinge angle aluminum plates, the third guardrail, and the flat washers before connecting to the second fixing nuts.

[0011] Preferably, the first fence is connected to the second fence, the second fence to the third fence, and the fifth fence to the first fence by cross-shaped fasteners.

[0012] Preferably, the fourth fence is provided with a pin near the end of the fifth fence, and the fifth fence is provided with a lock near the end of the fourth fence. The fourth fence and the fifth fence are connected by inserting the pin into the lock.

[0013] Preferably, the first fence, the second fence, the third fence, the fourth fence and the fifth fence are all fully enclosed aluminum alloy panels.

[0014] Preferably, the first fence, the second fence, the third fence, the fourth fence and the fifth fence are all fiberglass panels.

[0015] Preferably, vacuum suction cups are provided at the lower ends of the first fence, the second fence, the third fence and the fifth fence.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects: 1. This utility model uses the switch magnetic base at the lower end of the first, second, third, and fifth fences to reliably fix the fence device to the generator top cover plate without changing the basic structure of the generator top cover plate. It can prevent the fence device from shifting as a whole under the action of external force, causing the isolation to fail or the fence device to fall on top of the rotor, as well as prevent unauthorized personnel from accidentally entering or falling to the rotor and causing accidents, thereby improving the isolation effect and improving the safety and efficiency of maintenance.

[0017] 2. The self-closing hinge allows the fourth fence to close automatically after it is opened, ensuring that the fence device is always in a closed state without human intervention. This facilitates personnel access to open and close the fence device, thereby improving maintenance safety.

[0018] 3. The cross-shaped buckle enables quick installation and disassembly between the first and second fences, between the second and third fences, and between the fifth fence and the first fence. The fence device can be assembled or disassembled by hand without any tools, which facilitates the storage and transportation of the fence device and improves maintenance efficiency. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a quick-installation maintenance fence device according to an embodiment of the present utility model.

[0020] Figure 2 This is a schematic diagram of the switch magnetic base, guardrail, and kick plate in the embodiments of this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the self-closing hinge in an embodiment of this utility model.

[0022] Reference numerals: 1-First fence, 11-Guardrail, 12-Kickboard, 2-Second fence, 3-Third fence, 4-Fourth fence, 5-Fifth fence, 6-Switch magnetic base, 61-Magnetic base, 62-First magnetic pole mounting angle aluminum, 63-Second magnetic pole mounting angle aluminum, 64-First fixing bolt, 7-Self-closing hinge, 71-Hinge body, 72-First hinge angle aluminum, 73-Second hinge angle aluminum, 74-Flat washer, 75-Second fixing bolt, 76-Second fixing nut, 8-Cross buckle, 9-Pin, 10-Lock. Detailed Implementation

[0023] The specific implementation method is described below with reference to the accompanying drawings.

[0024] Example 1 A quick-installation maintenance fencing device, such as Figure 1 As shown, it includes: The first fence 1, the second fence 2, the third fence 3, the fourth fence 4 and the fifth fence 5 are detachably connected in sequence. The lower ends of the first fence 1, the second fence 2, the third fence 3 and the fifth fence 5 are all provided with switch magnetic bases 6. The third fence 3 and the fourth fence 4 are connected by self-closing hinges 7.

[0025] Among them, the first fence 1, the second fence 2, the third fence 3, the fourth fence 4 and the fifth fence 5 are all made of aluminum alloy, which can ensure the strength of the fence device while reducing its weight; the first fence 1, the second fence 2, the third fence 3, the fourth fence 4 and the fifth fence 5 are all sheet-like designs, which can be stacked after disassembly, requiring very little storage space, and are also convenient for moving the fence during use.

[0026] By installing a switch magnetic base 6 at the lower end of the first fence 1, the second fence 2, the third fence 3 and the fifth fence 5, the switch magnetic base 6 has a strong magnetism when it is turned on. The switch magnetic base 6 reliably fixes the fence device to the generator cover plate, preventing the fence device from shifting as a whole under the action of external force, which would cause the isolation to fail or the fence device to fall on top of the rotor.

[0027] Two self-closing hinges 7 are installed at both ends of the connection between the fourth fence 4 and the third fence 3. The fourth fence 4 serves as the movable gate of the fence device. The self-closing hinges 7 allow the movable gate to close automatically after being opened, ensuring that the fence device is always in a closed state without human intervention, thus improving maintenance safety.

[0028] Preferably, such as Figure 2As shown, the switch magnetic base 6 includes a magnetic base 61, a magnetic pole mounting angle aluminum, multiple first fixing bolts 64 and multiple first fixing nuts. The magnetic pole mounting angle aluminum includes a first magnetic pole mounting angle aluminum 62 and a second magnetic pole mounting angle aluminum 63. The first fence 1, the second fence 2, the third fence 3 and the fifth fence 5 all include a guardrail 11 and a kick plate 12. The lower end of the guardrail 11 is fixedly connected to the kick plate 12. The first fixing bolts 64 pass through the first magnetic pole mounting angle aluminum 62 and the kick plate 12 in sequence and are connected to the first fixing nuts. The first fixing bolts 64 pass through the second magnetic pole mounting angle aluminum 63 and the magnetic base 61 in sequence and are connected to the second fixing nuts 76.

[0029] Among them, the magnetic base 61 can be a 12T magnetic base, the first fixing bolt 64 can be an external hex bolt, and the first fixing nut can be a thin nylon locking nut. Each switch magnetic base 6 includes four first fixing bolts 64 and four first fixing nuts.

[0030] The kick plates 12 of the first fence 1, the second fence 2, and the third fence 3 are each equipped with a switch magnetic base 6 at both ends, and the kick plate 12 of the fifth fence 5 is equipped with a switch magnetic base 6. There are a total of seven switch magnetic bases 6.

[0031] Preferably, such as Figure 3 As shown, the self-closing hinge 7 includes a hinge body 71, multiple flat washers 74, multiple second fixing bolts 75, and multiple second fixing nuts 76. First hinge angle brackets 72 and second hinge angle brackets 73 are symmetrically arranged on both sides of the hinge body 71. The second fixing bolts 75 pass through the flat washers 74, the first hinge angle brackets 72, the hinge body 71, the second hinge angle brackets 73, and the flat washers 74 in sequence before connecting to the second fixing nuts 76. The second fixing bolts 75 also pass through the flat washers 74, the first hinge angle brackets 72, the third guardrail 3, and the flat washers 74 in sequence before connecting to the second fixing nuts 76.

[0032] The second fixing bolt 75 can be an external hexagonal bolt, and the second fixing nut 76 can be a thin nylon locking nut. Each self-closing hinge 7 includes six second fixing bolts 75 and six second fixing nuts 76.

[0033] Preferably, the first fence 1 and the second fence 2, the second fence 2 and the third fence 3, and the fifth fence 5 and the first fence 1 are all connected by cross-shaped buckles 8.

[0034] The cross buckle 8 can be made of aluminum alloy, and there are a total of six cross buckles 8.

[0035] The cross-shaped buckle 8 enables quick installation and disassembly between the first fence 1 and the second fence 2, between the second fence 2 and the third fence 3, and between the fifth fence 5 and the first fence 1. The fence device can be assembled or disassembled by hand without the aid of any tools, which facilitates the storage and transportation of the fence device and improves maintenance efficiency.

[0036] Preferably, a pin 9 is provided at the end of the fourth fence 4 near the fifth fence 5, and a lock 10 that cooperates with the pin 9 is provided at the end of the fifth fence 5 near the fourth fence 4. The fourth fence 4 and the fifth fence 5 are connected by inserting the pin 9 into the lock 10.

[0037] The opening and closing of the fourth fence 4 and the fifth fence 5, i.e., the opening and closing of the movable gate, is achieved through the cooperation between the bolt 9 and the lock 10.

[0038] Preferably, the first fence 1, the second fence 2, the third fence 3, the fourth fence 4, and the fifth fence 5 are all fully enclosed aluminum alloy baffles.

[0039] The isolation effect of the fence device is further enhanced by using fully enclosed aluminum alloy baffles.

[0040] Preferably, the first fence 1, the second fence 2, the third fence 3, the fourth fence 4, and the fifth fence 5 are all fiberglass panels.

[0041] Preferably, vacuum suction cups are provided at the lower ends of the first fence 1, the second fence 2, the third fence 3 and the fifth fence 5.

[0042] The use of fiberglass baffles and vacuum suction cups makes it suitable for working conditions that require insulation and have relatively smooth working surfaces.

[0043] This utility model is not limited to the above embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model shall be included within the protection scope of this utility model.

Claims

1. A quick-installation maintenance fence device, characterized in that, include: The first fence, second fence, third fence, fourth fence and fifth fence are detachably connected in sequence. The lower end of the first fence, second fence, third fence and fifth fence is provided with a switch magnetic base. The third fence and the fourth fence are connected by a self-closing hinge.

2. The quick-installation maintenance fence device according to claim 1, characterized in that: The switch magnetic base includes a magnetic base, a magnetic pole mounting angle aluminum, multiple first fixing bolts, and multiple first fixing nuts. The magnetic pole mounting angle aluminum includes a first magnetic pole mounting angle aluminum and a second magnetic pole mounting angle aluminum. The first fence, the second fence, the third fence, and the fifth fence all include a guardrail and a kick plate. The lower end of the guardrail is fixedly connected to the kick plate. The first fixing bolt passes through the first magnetic pole mounting angle aluminum and the kick plate in sequence and is connected to the first fixing nut. The first fixing bolt passes through the second magnetic pole mounting angle aluminum and the magnetic base in sequence and is connected to the second fixing nut.

3. The quick-installation maintenance fence device according to claim 1, characterized in that: The self-closing hinge includes a hinge body, multiple flat washers, multiple second fixing bolts, and multiple second fixing nuts. The hinge body has first and second hinge angle aluminum plates symmetrically arranged on both sides. The second fixing bolts pass through the flat washers, first hinge angle aluminum plates, hinge body, second hinge angle aluminum plates, and flat washers in sequence and are then connected to the second fixing nuts. The second fixing bolts also pass through the flat washers, first hinge angle aluminum plates, third guardrails, and flat washers in sequence and are then connected to the second fixing nuts.

4. The quick-installation maintenance fence device according to claim 1, characterized in that: The first fence is connected to the second fence, the second fence is connected to the third fence, and the fifth fence is connected to the first fence by cross-shaped fasteners.

5. The quick-installation maintenance fence device according to claim 1, characterized in that: The fourth fence is provided with a pin near the end of the fifth fence, and the fifth fence is provided with a lock near the end of the fourth fence. The fourth fence and the fifth fence are connected by inserting the pin into the lock.

6. The quick-installation maintenance fence device according to claim 1, characterized in that: The first, second, third, fourth, and fifth fences are all fully enclosed aluminum alloy panels.

7. The quick-installation maintenance fence device according to claim 1, characterized in that: The first, second, third, fourth, and fifth fences are all made of fiberglass panels.

8. The quick-installation maintenance fence device according to claim 1, characterized in that: Vacuum suction cups are installed at the lower ends of the first, second, third, and fifth fences.

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