A safety protection device suitable for a wind turbine generator set nacelle hoist opening cover plate

Abstract

The utility model relates to wind generating set machine cabin technical field, propose a kind of safety protection device suitable for wind generating set machine cabin hoist mouth cover plate, including reinforcing cover plate, the front end surface of reinforcing cover plate is fixedly connected with hinge, and the left and right side walls of reinforcing cover plate are all set up first threaded hole, the left and right sides of the lower end surface of reinforcing cover plate are all set up, the left and right upper end of mounting plate are all engaged and installed in limit groove, the weighing installation structure is installed in the upper end surface middle position of mounting plate. The safety protection device suitable for wind generating set machine cabin hoist mouth cover plate, through increasing load cell and audible and visual alarm instrument in hoist mouth cover plate, if standing in cover plate position, alarm occurs after load exceeds this top weight, warning personnel quickly evacuate dangerous area, to effectively prevent high place falling accident, improve operation safety.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine nacelle technology, specifically to a safety protection device for the lifting port cover of a wind turbine nacelle. Background Technology

[0002] The lifting opening of the wind turbine nacelle is usually located at the rear of the nacelle and is used for wind turbine equipment maintenance and component hoisting. Because the material of the cover plate has a certain load capacity, the design strength of the cover plate is not enough to support the weight of personnel. When the cover plate is closed, the workers will psychologically confirm that they are in a safe state. Since the load-bearing capacity of the lifting opening cover plate has a certain limit, personnel may easily overlook this danger point during operation and walk back and forth on the lifting opening cover plate, which poses a risk of personnel falling from a height if the cover plate breaks. However, the following problems exist in the implementation of the relevant technologies: the load-bearing opening cover has limited load-bearing capacity and cannot meet the requirements for personnel to walk; a warning fence is only set up at the engine room platform, and the fence does not use an interlocking device, so personnel can open it at will; no fence is set up at the rear of the engine room (located at the generator slip ring position), so personnel can move around at will. Utility Model Content

[0003] This utility model proposes a safety protection device for the lifting port cover of a wind turbine generator nacelle, which solves the problems in related technologies where the lifting port cover has limited load-bearing capacity and cannot meet the requirements for personnel to walk on it; the warning fence is only set at the nacelle platform, and the fence does not adopt an interlocking device, so personnel can open it at will; and no fence is set at the rear of the nacelle, so personnel can move around at will.

[0004] The technical solution of this utility model is as follows: a safety protection device for the lifting port cover plate of the wind turbine generator nacelle, including a reinforced cover plate, wherein a hinge is fixedly connected to the front end face of the reinforced cover plate, and the left and right side walls of the reinforced cover plate are provided with first threaded holes. The limiting groove is provided on both the left and right sides of the lower end face of the reinforcing cover plate, and an installation groove is provided in the middle of the lower end face of the reinforcing cover plate. Also includes: The mounting plate is fitted into the limiting groove at its upper left and right ends, and the mounting plate has a second threaded hole on its left and right side walls. A weighing mounting structure is installed at the middle of the upper end face of a mounting plate, and an alarm mounting structure is installed on the upper end face of the mounting plate at the rear side of the weighing mounting structure. A surge protector is fixedly installed on the front side of the upper end of the mounting plate.

[0005] Preferably, the upper left and right ends of the mounting plate are both T-shaped, and the front-to-back length of the mounting plate is smaller than that of the reinforcing cover plate.

[0006] Preferably, the front-to-back length of the limiting groove at the lower end of the reinforcing cover plate is equal to the front-to-back length of the mounting plate, and the first threaded hole on the side wall of the reinforcing cover plate and the second threaded hole on the side wall of the mounting plate are arranged in a one-to-one correspondence.

[0007] Preferably, the weighing installation structure includes a support plate, a fixing frame, a threaded rod, a sliding rod, and a weighing sensor. A sliding rod is connected through the corner of the support plate. A fixing frame is fixedly connected to the upper end of the sliding rod. The lower end of the fixing frame is fixedly connected to the upper surface of the mounting plate. A threaded rod is rotatably connected to the upper middle part of the fixing frame. The threaded rod is threadedly connected to the right middle part of the support plate. A weighing sensor is attached to the groove on the upper surface of the support plate. A connecting wire is connected to the front end of the weighing sensor.

[0008] Preferably, the load cell has a sliding structure on the slide bar via a threaded rod, and the load cell is electrically connected to the surge protector via a connecting wire, and the connecting wire has a spiral structure.

[0009] Preferably, the alarm installation structure includes a base plate, an audible and visual alarm, and alarm wires. The base plate is fixedly connected to the upper surface of the reinforcing cover plate by bolts. An audible and visual alarm is installed on the upper rear surface of the base plate. The right side of the audible and visual alarm is electrically connected to the alarm wires. The front end of the alarm wires is electrically connected to a surge protector. The front end of the surge protector is connected to a main conductor.

[0010] Preferably, the maximum width of the base plate is smaller than the width of the mounting groove, and tempered glass is inlaid on the upper end surface of the mounting groove.

[0011] Preferably, the first threaded hole and the second threaded hole are internally threaded with fastening bolts, and the fastening bolts, the first threaded hole and the second threaded hole are all arranged at equal intervals.

[0012] The working principle and beneficial effects of this utility model are as follows: by adding a load-bearing sensor and an audible and visual alarm to the cover plate of the hoisting opening, if the worker stands on the cover plate and the load exceeds the weight, an alarm will be triggered, warning the worker to quickly evacuate the danger zone, thereby effectively preventing falls from heights and improving work safety.

[0013] 1. In this utility model, a reinforcing cover plate and a mounting plate are provided. A load-bearing sensor and an audible and visual alarm are installed on the upper end of the mounting plate. At the same time, the mounting plate is engaged with the lower end of the reinforcing cover plate through a limiting groove, which facilitates installation and replacement, facilitates later maintenance and handling, and is convenient to use. 2. In this utility model, an alarm installation structure and a weighing installation structure are provided. The weighing sensor of the sub-part of the weighing installation structure is adjusted in height by a threaded rod so that the weighing sensor can be in close contact with the reinforcing cover plate, so as to receive the load in time and transmit the signal to the audible and visual alarm of the sub-part of the alarm installation structure in time, so as to alarm in time and avoid accidents. 3. In this utility model, a connecting wire and a surge protector are provided. The surge protector is electrically connected to the weighing installation structure through the connecting wire, which facilitates buffer protection of the connecting wire when the weighing sensor on the weighing installation structure is raised or lowered, so as to prevent it from being pulled off. At the same time, the surge protector provides electrical protection for the weighing sensor and the audible and visual alarm, so as to discharge lightning current and ensure equipment safety. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the internal structure of the reinforced cover plate and mounting plate proposed in this utility model; Figure 2 This is a schematic diagram of the overall structure proposed in this utility model; Figure 3 This is a schematic diagram of the weighing installation structure proposed in this utility model; Figure 4 This is a schematic diagram of the alarm installation structure proposed in this utility model; Figure 5 This is a schematic diagram of the workflow proposed in this utility model.

[0016] In the diagram: 1. Reinforced cover plate; 2. Hinge; 3. First threaded hole; 4. Mounting groove; 5. Tempered glass; 6. Limiting groove; 7. Mounting plate; 8. Second threaded hole; 9. Alarm mounting structure; 901. Base plate; 902. Audible and visual alarm; 903. Alarm wire; 10. Weighing mounting structure; 1001. Support plate; 1002. Fixing bracket; 1003. Threaded rod; 1004. Sliding rod; 1005. Weighing sensor; 11. Connecting wire; 12. Main wire; 13. Surge protector; 14. Fastening bolt. Detailed Implementation

[0017] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0018] Please see Figures 1-5 This utility model provides a technical solution for a safety protection device for the lifting port cover of a wind turbine generator nacelle: including a reinforced cover plate 1, a hinge 2, a first threaded hole 3, a mounting groove 4, tempered glass 5, a limiting groove 6, a mounting plate 7, a second threaded hole 8, an alarm mounting structure 9, a base plate 901, an audible and visual alarm 902, an alarm wire 903, a weighing mounting structure 10, a support plate 1001, a fixing frame 1002, a threaded rod 1003, a sliding rod 1004, a weighing sensor 1005, a connecting wire 11, a main wire 12, a surge protector 13, and fastening bolts 14.

[0019] The working principle and usage process of this utility model are as follows: First, combined with... Figure 1 and Figure 2 As shown, the upper left and right ends of the mounting plate 7 are both T-shaped, and the front-to-back length of the mounting plate 7 is smaller than that of the reinforcing cover plate 1. The front-to-back length of the limiting groove 6 at the lower end of the reinforcing cover plate 1 is equal to that of the mounting plate 7. The first threaded hole 3 on the side wall of the reinforcing cover plate 1 and the second threaded hole 8 on the side wall of the mounting plate 7 are arranged in a one-to-one correspondence. The first threaded hole 3 and the second threaded hole 8 are connected to the internal threads of the first threaded hole 3 and the second threaded hole 8. The fastening bolts 14 are arranged at equal intervals. The upper end of the mounting plate 7 slides with the inside of the limiting groove 6, which makes it easy to install the mounting plate 7 at the lower end of the reinforcing cover plate 1. Then, the fastening bolts 14 are passed through the first threaded hole 3 and the second threaded hole 8 in sequence and screwed in, which makes it easy to firmly fix the mounting plate 7 to the reinforcing cover plate 1, making it easy to install the mounting plate 7 stably and convenient to use. At the same time, the reinforcing cover plate 1 is flipped and connected to the cargo hoisting port of the cabin through the hinge 2. Combination Figure 1 and Figure 3As shown, the weighing installation structure 10 includes a support plate 1001, a fixing frame 1002, a threaded rod 1003, a sliding rod 1004, and a load cell 1005. A sliding rod 1004 is connected through the corner of the support plate 1001. The upper end of the sliding rod 1004 is fixedly connected to the fixing frame 1002. The lower end of the fixing frame 1002 is fixedly connected to the upper surface of the mounting plate 7. A threaded rod 1003 is rotatably connected to the upper middle part of the fixing frame 1002. The threaded rod 1003 is threadedly connected to the right middle part of the support plate 1001. The load cell 1005 is attached to a groove on the upper surface of the support plate 1001. A connecting wire 11 is connected to the front end of the load cell 1005. The load cell 1005 slides up and down on the sliding rod 1004 via the threaded rod 1003. The load cell 1005 is electrically connected to the surge protector 13 via a connecting wire 11, which has a spiral structure. The load cell 1005 is fixed to the lower end face of the upper groove of the support plate 1001 by adhesive. Rotating the threaded rod 1003 facilitates the sliding of the support plate 1001 on the slide rod 1004, so that the load cell 1005 can be tightly fitted to the upper end face of the mounting groove 4 of the reinforcing cover plate 1. This ensures that when the reinforcing cover plate 1 is subjected to force, the load cell 1005 can be promptly loaded and transmit signals for timely alarm processing. At the same time, the spiral structure of the connecting wire 11 facilitates the buffer adjustment of the length of the connecting wire 11 when the load cell 1005 is raised or lowered, avoiding pulling and breakage, and making it convenient to use. Combination Figure 1 and Figure 4 As shown, the alarm installation structure 9 includes a base plate 901, an audible and visual alarm 902, and an alarm wire 903. The base plate 901 is fixedly connected to the upper surface of the reinforcing cover plate 1 by bolts. The audible and visual alarm 902 is installed on the upper rear side of the base plate 901. The right side of the audible and visual alarm 902 is electrically connected to the alarm wire 903. The front end of the alarm wire 903 is electrically connected to the surge protector 13. The front end of the surge protector 13 is connected to the main conductor 12. The maximum width of the base plate 901 is smaller than the width of the mounting groove 4, and tempered glass 5 is inlaid on the upper surface of the mounting groove 4. The base plate 901 is fixedly installed on the upper surface of the mounting plate 7 by bolts. The audible and visual alarm 902 is electrically connected to the surge protector 13 through the alarm wire 903. The surge protector 13 provides electrical protection for the weighing sensor 1005 and the audible and visual alarm 902 to discharge lightning current and ensure equipment safety. Combination Figure 1 and Figure 5 As shown, by setting the safe load capacity of the weighing sensor 1005, when... When the load reaches this valueWhen the normally open relay contacts 3-4 of the load cell 1005 close, a 24VDC trigger signal is output. The 24V power is transmitted to the control coil KM of the audible and visual alarm 902 through the four-corner module. This signal drives the contactor KMA1 coil in the circuit of the audible and visual alarm 902 to be energized and its main contacts to close, ultimately supplying power to the audible and visual alarm 902 and activating the alarm. The device monitors the load status of the reinforced cover 1 in real time. When the load reaches the preset safety threshold, the device will immediately trigger the audible and visual alarm 902 to warn personnel to stay away from the danger zone. The device is connected to 220V mains power, and the main controller can be a computer or other conventional known control device. This is the working process of the safety protection device for the lifting port cover of the wind turbine generator nacelle.

[0020] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A safety protection device for the lifting port cover of a wind turbine generator nacelle, comprising a reinforced cover (1), wherein a hinge (2) is fixedly connected to the front end face of the reinforced cover (1), and a first threaded hole (3) is provided on both the left and right side walls of the reinforced cover (1). The limiting groove (6) is provided on both the left and right sides of the lower end face of the reinforcing cover plate (1), and the mounting groove (4) is provided in the middle of the lower end face of the reinforcing cover plate (1). Its features are, Also includes: Mounting plate (7), the upper left and right ends of the mounting plate (7) are engaged in the limiting groove (6), and the left and right side walls of the mounting plate (7) are provided with second threaded holes (8). Weighing installation structure (10) is installed at the middle of the upper end face of the mounting plate (7), and an alarm installation structure (9) is installed on the upper end face of the mounting plate (7) at the rear side of the weighing installation structure (10), and a surge protector (13) is fixedly installed on the upper front side of the mounting plate (7).

2. A safety protection device for the lifting port cover of a wind turbine generator nacelle according to claim 1, characterized in that, The upper left and right ends of the mounting plate (7) are both T-shaped, and the front and rear length of the mounting plate (7) is smaller than that of the reinforcing cover plate (1).

3. A safety protection device for the hoisting port cover of a wind turbine generator nacelle according to claim 1, characterized in that, The front-to-back length of the limiting groove (6) at the lower end of the reinforcing cover plate (1) is equal to the front-to-back length of the mounting plate (7), and the first threaded hole (3) on the side wall of the reinforcing cover plate (1) and the second threaded hole (8) on the side wall of the mounting plate (7) are arranged in a one-to-one correspondence.

4. A safety protection device for the lifting port cover of a wind turbine generator nacelle according to claim 1, characterized in that, The weighing installation structure (10) includes a support plate (1001), a fixing frame (1002), a threaded rod (1003), a sliding rod (1004), and a weighing sensor (1005). The sliding rod (1004) is connected through the corner of the support plate (1001). The upper end of the sliding rod (1004) is fixedly connected to the fixing frame (1002). The lower end of the fixing frame (1002) is fixedly connected to the upper end of the mounting plate (7). The upper middle part of the fixing frame (1002) is rotatably connected to the threaded rod (1003). The threaded rod (1003) is threadedly connected to the right middle part of the support plate (1001). The weighing sensor (1005) is pasted and connected to the groove on the upper end of the support plate (1001). The front end of the weighing sensor (1005) is connected to a connecting wire (11).

5. A safety protection device for the lifting port cover of a wind turbine generator nacelle according to claim 4, characterized in that, The load cell (1005) forms an up-and-down sliding structure on the slide bar (1004) through the threaded rod (1003), and the load cell (1005) is electrically connected to the surge protector (13) through the connecting wire (11), and the connecting wire (11) has a spiral structure.

6. A safety protection device for the hoisting port cover of a wind turbine generator nacelle according to claim 1, characterized in that, The alarm installation structure (9) includes a base plate (901), an audible and visual alarm (902), and an alarm wire (903). The base plate (901) is fixedly connected to the upper end of the reinforcing cover plate (1) by bolts. The audible and visual alarm (902) is installed on the upper rear side of the base plate (901). The right side of the audible and visual alarm (902) is electrically connected to the alarm wire (903). The front end of the alarm wire (903) is electrically connected to the surge protector (13). The front end of the surge protector (13) is connected to the main wire (12).

7. A safety protection device for the lifting port cover of a wind turbine generator nacelle according to claim 6, characterized in that, The maximum width of the base plate (901) is smaller than the width of the mounting groove (4), and tempered glass (5) is inlaid on the upper end face of the mounting groove (4).

8. A safety protection device for the lifting port cover of a wind turbine generator nacelle according to claim 1, characterized in that, The first threaded hole (3) and the second threaded hole (8) are internally threaded with fastening bolts (14), and the fastening bolts (14), the first threaded hole (3) and the second threaded hole (8) are all set at equal intervals.

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