Anti-falling device for equipment maintenance of hydroelectric generating set

Abstract

The utility model relates to the technical field of hydroelectric generating set maintenance, and provides a hydroelectric generating set equipment maintenance anti-falling device which comprises a first pedal (1) and a second pedal (2), the first pedal (1) is rotatably connected with the second pedal (2), two side walls of the first pedal (1) are respectively provided with a first extension plate (4) in a sliding mode, and two side walls of the second pedal (2) are respectively provided with a second extension plate (5) in a sliding mode. A plurality of first adjusting holes (41) are formed in the first extension plate (4) at equal intervals in the sliding direction of the first extension plate (4), a plurality of second adjusting holes (51) are formed in the second extension plate (5) at equal intervals in the sliding direction of the second extension plate (5), positioning holes (6) communicated with the inside are formed in the first pedal (1) and the second pedal (2), and inserting rods (7) are inserted into the positioning holes (6). According to the utility model, the motor rotor does not need to be processed and perforated, and the motor rotor can be normally constructed and used.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water turbine unit maintenance, more specifically, relates to a water turbine unit maintenance anti-falling device. BACKGROUND

[0002] In the water turbine unit maintenance, there are multiple ventilation holes above the generator rotor, and the operator is prone to falling accidents during high-altitude maintenance. In order to ensure the safety of the operator, a wooden board is laid at the hole to prevent falling accidents.

[0003] The patent document with the publication number CN218572676U discloses a water turbine unit maintenance anti-falling device, which includes a main body assembly and an anti-falling assembly. The main body assembly includes a motor rotor and a hole, and the motor rotor has multiple holes at the top. The anti-falling assembly is set in the hole. The utility model sets the anti-falling assembly at the hole of the motor rotor, which can prevent the operator from accidentally stepping into the hole and causing a safety accident. The baffle is composed of a first baffle and a second baffle, and the first baffle is connected to the second baffle through a hinge. When the maintenance is completed, the hand-held part on one side of the first baffle and the second baffle is lifted, and the anti-falling assembly can be easily carried, which is simple and convenient to operate. However, the anti-falling device in the prior art needs to drill screw holes on the platform of the motor rotor for use with the device, but drilling holes on the motor rotor will obviously affect the use of the motor rotor. It is not a conventional technical means, and there is an urgent need to provide an anti-falling device that does not need to drill holes on the platform of the motor rotor and can be normally built and used. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a water turbine unit maintenance anti-falling device that does not need to drill holes on the motor rotor and can be normally built and used.

[0005] A water turbine unit maintenance anti-falling device includes a first pedal and a second pedal, which are connected through a hinge. The two sides of the first pedal are slidably connected to a first extension plate, and the two sides of the second pedal are slidably connected to a second extension plate. Multiple first adjustment holes are evenly distributed on the first extension plate along the sliding direction, and multiple second adjustment holes are evenly distributed on the second extension plate along the sliding direction. Positioning holes are formed in the first pedal and the second pedal, and a plug rod is inserted into the positioning holes. The lower end of the plug rod passes through the first adjustment hole or the second adjustment hole. Anti-skid strips are fixed to the lower end faces of the first extension plate and the second extension plate.

[0006] Further, the first pedal and the second pedal are both fan-shaped and can be spliced into a fan shape.

[0007] Further, the hinge is located at the intersection of the lower end surfaces of the first pedal and the second pedal.

[0008] Further, the first extension plate and the second extension plate are both fan-shaped and the sliding direction is arc-shaped.

[0009] Further, the anti-skid strip is a rubber strip.

[0010] Further, a threaded groove is formed in the positioning hole, the upper end of the insertion rod is fixedly connected with a disc, an outer thread is formed on the circumferential wall of the disc and is threadedly connected to the threaded groove, a recess is formed in the disc and an operating rod is fixedly connected in the recess.

[0011] Further, an installation groove is formed in each of the first pedal and the second pedal, and a sliding groove is formed in each of the two side walls of the installation groove and communicates with the installation groove.

[0012] Further, a sliding ball is slidably arranged in the sliding groove, and a first handle is fixedly connected between two adjacent sliding balls.

[0013] Further, a second handle is fixedly connected to the side of each of the first pedal and the second pedal away from each other.

[0014] Further, a third handle is fixedly connected to each of the first extension plate and the second extension plate.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] In the utility model, the anti-skid strip is arranged to improve the contact stability between the first extension plate, the second extension plate and the rotor support arm, the cooperation of the insertion rod, the positioning hole and the first adjusting hole or the second adjusting hole ensures that the first pedal and the first extension plate and the second pedal and the second extension plate will not relatively displace, and the anti-skid strip cooperates with the first extension plate and the second extension plate, so that the device can be normally built and used without machining the rotor support arm on the motor rotor, and has stability. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings are used to provide a further understanding of the utility model and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

[0018] Figure 1 is a schematic view of the use of a water turbine equipment maintenance anti-falling device;

[0019] Figure 2 is a kind of overall structure schematic diagram of water turbine unit equipment maintenance anti-falling device Figure 1

[0020] Figure 3 is a kind of overall structure schematic diagram of water turbine unit equipment maintenance anti-falling device Figure 2

[0021] Figure 4 is a kind of schematic diagram in folding process of water turbine unit equipment maintenance anti-falling device;

[0022] Figure 5 is Figure 4 the enlarged view of A in Figure

[0023] In the figure: 1, first pedal;2, second pedal;3, hinge;4, first extension plate;41, first adjusting hole;5, second extension plate;51, second adjusting hole;6, positioning hole;61, threaded groove;7, plug rod;8, anti-skid strip;9, motor rotor;10, rotor support arm;11, orifice;12, disc;13, recess;14, operating rod;15, installation groove;16, sliding groove;17, sliding ball;18, first handle;19, second handle;20, third handle. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Specific embodiments:

[0026] As Figures 1-5 ​​As shown, a water turbine generator unit equipment overhauling anti-falling device, including first pedal 1 and second pedal 2, first pedal 1 and second pedal 2 are all fan-shaped and can be fitted together into a fan-shaped, first pedal 1 and second pedal 2 are connected by hinge 3, hinge 3 is located at the intersection of the lower end surface of first pedal 1 and second pedal 2, first pedal 1 both sides of the wall are sliding first extension plate 4, second pedal 2 both sides of the wall are sliding second extension plate 5, first extension plate 4 and second extension plate 5 are all fan-shaped, and the sliding direction is arc-shaped; A plurality of first adjusting holes 41 are formed on the first extension plate 4 along the sliding direction at equal intervals, a plurality of second adjusting holes 51 are formed on the second extension plate 5 along the sliding direction at equal intervals, a plurality of positioning holes 6 are formed on the first pedal 1 and the second pedal 2 at appropriate positions and are in communication with the inside, a plug rod 7 is inserted into the positioning hole 6, and the lower end of the plug rod 7 passes through the first adjusting hole 41 or the second adjusting hole 51 at the appropriate position; The lower end surface of first extension plate 4 and second extension plate 5 is fixedly connected with anti-skid strip 8, which is rubber strip in this embodiment. Pull out the plug rod 7, pull the first extension plate 4 and the second extension plate 5 to the appropriate position, insert the plug rod 7 into the positioning hole 6 and the first adjusting hole 41 or the second adjusting hole 51 again, and then rotate the first pedal 1 and the second pedal 2 to make the side walls of the first pedal 1 and the second pedal 2 close to each other contact and abut. This can make the device set on the rotor arm 10 of the motor rotor 9, used to shield the orifice 11 on the adjacent two rotor arms 10, facilitate workers to step on the device to overhaul the hydroelectric generator unit, and improve the contact stability between the first extension plate 4 and the second extension plate 5 and the rotor arm 10 by setting the anti-skid strip 8. The cooperation of the plug rod 7, the positioning hole 6 and the first adjusting hole 41 or the second adjusting hole 51 makes the first pedal 1 and the first extension plate 4 and the second pedal 2 and the second extension plate 5 not relatively displace, which is more stable. The anti-skid strip 8 cooperates with the first extension plate 4 and the second extension plate 5, without the need to process the rotor arm 10 on the motor rotor 9, the device can be normally built and used, and has stability.

[0027] As Figures 1-5As shown, the positioning hole 6 is provided with a threaded groove 61, the upper end of the insertion rod 7 is fixedly connected with a disc 12, the disc 12 is adapted to the threaded groove 61 and the circumferential side wall is provided with external threads, so that the disc 12 is threadedly connected in the threaded groove 61, a recess 13 is formed in the disc 12, and an operating rod 14 is fixedly connected in the recess 13. When the insertion rod 7 is inserted into the positioning hole 6 and the first adjusting hole 41 or the second adjusting hole 51, when the disc 12 starts to enter the threaded groove 61, the disc 12 is threadedly connected in the threaded groove 61 by rotating the insertion rod 7 by operating the operating rod 14, so that the insertion rod 7 can be prevented from falling off, and the device can be more stable whether it is used or stored. When the disc 12 completely enters the threaded groove 61, the end surface of the disc 12 is flush with the end surface of the first pedal 1 or the second pedal 2, so as to avoid bumping the staff.

[0028] As shown in Figures 1-5 , the first pedal 1 and the second pedal 2 are both provided with a mounting groove 15, the two side walls of the mounting groove 15 are both provided with a cylindrical sliding groove 16 which is communicated with the mounting groove 15, a sliding ball 17 is slidably arranged in the sliding groove 16, and a first handle 18 is fixedly connected between the two sliding balls 17 in the same mounting groove 15. By arranging the first handle 18, the first pedal 1 and the second pedal 2 can be lifted when the device is stored, and the first handle 18 can be stored in the mounting groove 15 due to the sliding of the sliding ball 17 in the sliding groove 16.

[0029] As shown in Figures 1-5 , the first pedal 1 and the second pedal 2 are both provided with a mounting groove 15, the two side walls of the mounting groove 15 are both provided with a cylindrical sliding groove 16 which is communicated with the mounting groove 15, a sliding ball 17 is slidably arranged in the sliding groove 16, and a first handle 18 is fixedly connected between the two sliding balls 17 in the same mounting groove 15. By arranging the first handle 18, the first pedal 1 and the second pedal 2 can be lifted when the device is stored, and the first handle 18 can be stored in the mounting groove 15 due to the sliding of the sliding ball 17 in the sliding groove 16.

[0030] As shown in Figures 1-5 , the first pedal 1 and the second pedal 2 are both provided with a mounting groove 15, the two side walls of the mounting groove 15 are both provided with a cylindrical sliding groove 16 which is communicated with the mounting groove 15, a sliding ball 17 is slidably arranged in the sliding groove 16, and a first handle 18 is fixedly connected between the two sliding balls 17 in the same mounting groove 15. By arranging the first handle 18, the first pedal 1 and the second pedal 2 can be lifted when the device is stored, and the first handle 18 can be stored in the mounting groove 15 due to the sliding of the sliding ball 17 in the sliding groove 16.

[0031] The working principle of the water turbine unit equipment maintenance anti-falling device in the embodiment is as follows: before use, according to the size of the hole 11, rotate and pull out each insertion rod 7, respectively hold each third handle 20 to pull out the first extension plate 4 and the second extension plate 5 to a suitable position, and re-insert the insertion rod 7 into the positioning hole 6 and the first adjusting hole 41 or the second adjusting hole 51 at the suitable position, hold the two second handles 19 to set up the device on the two rotor arms 10 adjacent to the hole 11, due to the arrangement of the anti-skid strip 8, the insertion rod 7, the positioning hole 6 and the first adjusting hole 41 or the second adjusting hole 51, without machining holes on the rotor arm 10 and inserting through the screw rod, the device can be normally set up and used; when the device is set up on another hole, pull up the two first handles 18 to quickly store the device.

[0032] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A fall prevention device for maintenance of hydropower unit equipment, characterized in that: The system includes a first pedal (1) and a second pedal (2), which are rotatably connected by a hinge (3). The first pedal (1) has a first extension plate (4) sliding on both sides of its side wall, and the second pedal (2) has a second extension plate (5) sliding on both sides of its side wall. The first extension plate (4) has a plurality of first adjustment holes (41) at equal intervals along its sliding direction, and the second extension plate (5) has a plurality of second adjustment holes (51) at equal intervals along its sliding direction. The first pedal (1) and the second pedal (2) each have a positioning hole (6) communicating with the interior. A rod (7) is inserted into the positioning hole (6), and the lower end of the rod (7) passes through the first adjustment hole (41) or the second adjustment hole (51). The lower end surfaces of the first extension plate (4) and the second extension plate (5) are fixed with anti-slip strips (8).

2. The anti-fall device for maintenance of hydropower unit equipment according to claim 1, characterized in that: The first pedal (1) and the second pedal (2) are both fan-shaped and can be fitted together to form a fan shape.

3. The anti-fall device for maintenance of hydropower unit equipment according to claim 1, characterized in that: The hinge (3) is located at the junction of the lower end faces of the first pedal (1) and the second pedal (2).

4. The anti-fall device for maintenance of hydropower unit equipment according to claim 1, characterized in that: Both the first extension plate (4) and the second extension plate (5) are fan-shaped and slide in an arc direction.

5. A fall prevention device for maintenance of hydropower unit equipment according to claim 1, characterized in that: The anti-slip strip (8) is a rubber strip.

6. A fall prevention device for maintenance of hydropower unit equipment according to claim 1, characterized in that: The positioning hole (6) has a threaded groove (61) inside. The upper end of the insertion rod (7) is fixedly connected to a disc (12). The sidewall of the disc (12) has an external thread and is threaded to the threaded groove (61). The disc (12) has a groove (13) and an operating rod (14) is fixedly connected to the groove (13).

7. A fall prevention device for maintenance of hydropower unit equipment according to claim 1, characterized in that: Both the first pedal (1) and the second pedal (2) are provided with mounting grooves (15), and both sides of the mounting groove (15) are provided with sliding grooves (16) that communicate with the mounting groove (15).

8. A fall prevention device for maintenance of hydropower unit equipment according to claim 7, characterized in that: A sliding ball (17) slides in the groove (16), and a first handle (18) is fixed between two adjacent sliding balls (17).

9. A fall prevention device for maintenance of hydropower unit equipment according to claim 1, characterized in that: A second handle (19) is fixed to the side of the first pedal (1) and the second pedal (2) that are far apart from each other.

10. A fall prevention device for maintenance of hydropower unit equipment according to claim 1, characterized in that: A third handle (20) is fixedly connected to both the first extension plate (4) and the second extension plate (5).

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