Overhaul and maintenance system for flood discharge surface hole flow channel of hydropower station

Abstract

The utility model discloses a hydropower station flood discharge surface hole flow channel maintenance system, which comprises a track, a mobile vehicle and a brake mechanism, the track extends along a surface hole flow channel, the track comprises a pair of monorails, each monorail is provided with a top beam and a bottom beam which extend along the length direction, the top surface of the bottom beam is convexly provided with a clamping edge, and the clamping edge extends along the length direction of the bottom beam; the moving trolley is provided with two rows of moving wheels, and clamping grooves matched with the clamping edges are formed in the wheel faces of the moving wheels in the circumferential direction. The top of the moving vehicle is connected with a lifting mechanism through an angle adjusting mechanism, a maintenance platform is arranged at the top of the lifting mechanism, and the angle adjusting mechanism can adjust the angle between the maintenance platform and the moving vehicle so that the maintenance platform can be kept horizontal; the brake mechanism is arranged on the bottom face of the top beam and used for braking the moving wheels. The problems that an existing movable maintenance platform is not ideal in braking and prone to lateral movement, and the levelness of the maintenance platform cannot be guaranteed can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of inspection and maintenance of hydropower stations, in particular to an inspection and maintenance system for a flood discharge surface orifice flow channel of a hydropower station. Background Art

[0002] Due to long-term operation, the walls of the flood discharge channel of the hydropower station will be eroded and worn to varying degrees, and regular maintenance is required. During maintenance, due to the limitations of construction conditions and the constraints of the construction environment, it is generally necessary to temporarily set up a maintenance platform to carry out maintenance work on the flood discharge channel.

[0003] However, the cost of temporarily setting up a maintenance platform is high and the efficiency is low. Therefore, it is considered to use a mobile vehicle equipped with a lifting mechanism and a maintenance platform on the top of the lifting mechanism for maintenance. However, in actual use, the surface hole flow channel has a large slope, which leads to unsatisfactory braking of the mobile vehicle and makes it easy for the vehicle to slip, requiring protection by a safety cable. On the other hand, due to the use of a safety cable for pulling, the mobile vehicle is prone to unnecessary lateral movement during operation, resulting in poor vehicle stability. Thirdly, the surface hole flow channel has a large slope, and the horizontality of the maintenance platform at the bottom of the mobile vehicle cannot be guaranteed, resulting in the inability of maintenance personnel to stand stably on the maintenance platform to carry out maintenance work. Utility Model Content

[0004] The utility model aims to provide a hydropower station flood discharge surface orifice flow channel inspection and maintenance system, which can solve the problems of the existing mobile inspection platform having poor braking, easy lateral movement, and inability to ensure the horizontality of the inspection platform.

[0005] The utility model is realized by the following technical solutions:

[0006] A system for inspecting and maintaining a flood discharge surface orifice flow channel of a hydropower station comprises a track extending along the surface orifice flow channel, the track comprising a pair of monorails, the monorail being provided with a top beam and a bottom beam extending in a length direction, the top surface of the bottom beam being provided with a clamping edge convexly extending in a length direction of the bottom beam; a mobile vehicle being provided with two rows of mobile wheels, the wheel surfaces of the mobile wheels being provided with clamping grooves matching the clamping edges in a circumferential direction; a lifting mechanism being connected to the top of the mobile vehicle via an angle adjustment mechanism, a maintenance platform being provided on the top of the lifting mechanism, the angle adjustment mechanism being capable of adjusting the angle between the maintenance platform and the mobile vehicle so as to keep the maintenance platform horizontal; a brake mechanism being provided on the bottom surface of the top beam, the brake mechanism being used to brake the mobile wheels.

[0007] Optionally, the brake mechanism includes a pressure plate, an elastic friction strip and a plurality of hydraulic cylinders, the pressure plate is arranged in parallel and directly below the top beam, and is connected to the top beam through the hydraulic cylinder so that the pressure plate can approach or move away from the bottom beam; the elastic friction strip is laid on the bottom surface of the pressure plate, and the elastic friction strip is used to contact and squeeze the wheel surface of the moving wheel or the groove surface of the slot to brake the moving wheel.

[0008] Optionally, the width of the elastic friction strip matches the width of the slot, and the elastic friction strip is used to contact and squeeze the slot surface of the slot to brake the moving wheel.

[0009] Optionally, a tooth groove is opened at the bottom of the slot in the circumferential direction, and the groove width of the tooth groove is narrower than the groove width of the slot; a rack is inserted in the middle of the elastic friction strip, the back side of the rack is connected to the pressure plate, and the tooth surface of the rack faces the tooth groove and matches the tooth groove; when the elastic friction strip is in a natural state, the tooth surface of the rack is buried in the elastic friction strip; when the elastic friction strip is embedded in the slot and squeezed, the rack extends out and can engage with the tooth groove.

[0010] Optionally, the width of the pressure plate is greater than the width of the slot; when the pressure plate contacts the wheel surface of the moving wheel, the rack is meshed and engaged with the tooth groove.

[0011] Optionally, a chuck is coaxially connected to the outer side of the moving wheel, and a bearing is coaxially mounted between the chuck and the moving wheel; the monorail is provided with a side beam extending along the length direction, and a limiting edge is convexly provided on the bottom surface of the side beam, and the bottom of the limiting edge contacts the outer surface of the bearing.

[0012] Optionally, it also includes a masking groove, which is opened on the bottom surface of the surface hole flow channel along the extension direction of the surface hole flow channel, the groove width of the masking groove is greater than the vehicle width of the mobile vehicle, and the masking groove is detachably provided with a sealing cover plate; the track is arranged in the masking groove.

[0013] Optionally, an adjustment groove is dug on the side wall of the masking groove, the monorail is slidably arranged along the depth direction of the adjustment groove, and the monorail is connected to the bottom of the adjustment groove through a plurality of adjustment cylinders.

[0014] Optionally, the angle adjustment mechanism includes an angle adjustment plate and an angle adjustment cylinder, the angle adjustment plate is hinged to the moving axle, and both ends of the angle adjustment cylinder are respectively hinged to the angle adjustment plate and the moving axle; the lifting mechanism is a scissor-type lifting platform.

[0015] Optionally, it also includes a safety cable and a winding roller, one end of the safety cable is connected to the moving vehicle, and the other end is wound around the winding roller, and the winding roller is arranged at the starting point of the surface hole flow channel.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] The utility model provides a hydropower station flood discharge table hole flow channel inspection and maintenance system, by providing a mobile vehicle, an angle adjustment mechanism is provided on the top of the mobile vehicle, a lifting mechanism is provided on the angle adjustment mechanism, and an inspection platform is provided on the top of the lifting mechanism, so as to realize the movement, lifting and angle adjustment functions of the inspection platform; on this basis, by providing the mobile vehicle with two rows of moving wheels, and the moving wheels are provided with card slots, and the track is provided including a pair of monorails, the monorail is provided with a bottom beam, and the top of the bottom beam is provided with a card edge matching the card slot, when in use, the card edge is inserted into the card slot of the moving wheel, the moving wheel can be limited in the lateral direction, and the moving wheel can be adjusted. The mobile vehicle is limited in the lateral direction, thereby effectively avoiding unnecessary lateral movement of the mobile vehicle; on this basis, a top beam is provided, and a brake mechanism is provided on the bottom surface of the top beam, and the brake mechanism is used to brake the mobile wheel, thereby effectively braking the mobile vehicle, and no matter where the mobile wheel is located on the track, it can be braked by the brake mechanism; through the mutual cooperation of the above-mentioned features, the hydropower station flood discharge surface hole flow channel inspection and maintenance system can effectively solve the problems of existing mobile inspection platforms that are not ideal in braking, are prone to lateral movement, and cannot ensure the horizontality of the inspection platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0019] Figure 1 A schematic diagram of the hydropower station flood discharge surface orifice flow channel inspection and maintenance system provided by the embodiment of the utility model when in use;

[0020] Figure 2 A schematic diagram of a mobile vehicle for the inspection and maintenance system of a flood discharge surface orifice flow channel of a hydropower station provided by an embodiment of the utility model;

[0021] Figure 3 A cross-sectional view of the moving wheel of the hydropower station flood discharge surface orifice flow channel inspection and maintenance system provided by the embodiment of the utility model when moving along the monorail;

[0022] Figure 4 A cross-sectional view of the initial braking of the moving wheel of the hydropower station flood discharge surface hole flow channel inspection and maintenance system provided by the embodiment of the utility model (the elastic friction strip only contacts the groove surface of the card slot but no extrusion occurs);

[0023] Figure 5 A cross-sectional view of the mobile wheel braking of the hydropower station flood discharge surface orifice flow channel inspection and maintenance system provided by the embodiment of the utility model;

[0024] Figure 6A cross-sectional view of the sealing cover of the flood discharge surface orifice flow channel inspection and maintenance system of the hydropower station provided by the embodiment of the utility model;

[0025] Figure 7 The utility model is provided in an embodiment of a hydropower station flood discharge surface orifice flow channel inspection and maintenance system, with the masking groove opened and the track adjusted to the working position.

[0026] Marks and corresponding parts names in the attached drawings:

[0027] 1-masking groove; 2-sealing cover plate; 3-adjusting groove; 4-adjusting cylinder; 10-track; 11-monorail; 111-top beam; 112-bottom beam; 1121-clamping edge; 113-side beam; 1131-limiting edge; 20-moving vehicle; 21-moving wheel; 211-clamping groove; 212-tooth groove; 213-chuck; 22-maintenance platform; 30-pressing plate; 31-elastic friction strip; 32-hydraulic cylinder; 33-rack; 40-angle adjustment plate; 41-angle adjustment cylinder; 50-lifting mechanism; 60-safety cable; 61-winding roller. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0029] Example

[0030] Please refer to Figures 1 to 7 The present embodiment provides a hydropower station flood discharge surface hole flow channel inspection and maintenance system, including a track 10, the track 10 extends along the surface hole flow channel, the track 10 includes a pair of monorails 11, the monorail 11 is provided with a top beam 111 and a bottom beam 112 extending in the length direction, the top surface of the bottom beam 112 is convexly provided with a clamping edge 1121, and the clamping edge 1121 extends in the length direction of the bottom beam 112; the second includes a mobile vehicle 20, the mobile vehicle 20 is provided with two rows of mobile wheels 21, the mobile wheels The wheel surface of the mobile vehicle 21 is provided with a slot 211 matching the card edge 1121 along the circumferential direction; the top of the mobile vehicle 20 is connected to a lifting mechanism 50 through an angle adjustment mechanism, and a maintenance platform 22 is provided on the top of the lifting mechanism 50, and the angle adjustment mechanism can adjust the angle between the maintenance platform 22 and the mobile vehicle 20 so that the maintenance platform 22 maintains a horizontal state; the third includes a brake mechanism, which is arranged on the bottom surface of the top beam 111, and the brake mechanism is used to brake the mobile wheel 21.

[0031] The hydropower station flood discharge surface hole flow channel inspection and maintenance system provided in the present embodiment is provided with a mobile vehicle 20, an angle adjustment mechanism is provided on the top of the mobile vehicle 20, a lifting mechanism 50 is provided on the angle adjustment mechanism, and an inspection platform 22 is provided on the top of the lifting mechanism 50, so as to realize the movement, lifting and angle adjustment functions of the inspection platform 22; on this basis, by providing the mobile vehicle 20 with two rows of moving wheels 21, and the moving wheels 21 are provided with a slot 211, and the track 10 is provided with a pair of monorails 11, the monorail 11 is provided with a bottom beam 112, and the top of the bottom beam 112 is provided with a clamping edge 1121 matching the clamping groove 211, when in use, the clamping edge 1121 is clamped into the clamping groove 211 of the moving wheel 21, By limiting the moving wheel 21 laterally, the moving vehicle 20 can be limited laterally, thereby effectively avoiding unnecessary lateral movement of the moving vehicle 20; on this basis, by providing a top beam 111 and a brake mechanism on the bottom surface of the top beam 111, the moving wheel 21 is braked by the brake mechanism, thereby effectively braking the moving vehicle 20, and no matter where the moving wheel 21 is located on the track 10, it can be braked by the brake mechanism; through the mutual cooperation of the above-mentioned features, the hydropower station flood discharge surface orifice flow channel inspection and maintenance system can effectively solve the problems of existing mobile inspection platforms such as poor braking, easy lateral movement, and inability to ensure the horizontality of the inspection platform.

[0032] In order to further explain the specific structure of the brake mechanism, the brake mechanism includes a pressure plate 30, an elastic friction strip 31 and a plurality of hydraulic cylinders 32. The pressure plate 30 is arranged in parallel directly below the top beam 111, and is connected to the top beam 111 through the hydraulic cylinder 32 so that the pressure plate 30 can approach or move away from the bottom beam 112; the elastic friction strip 31 is laid on the bottom surface of the pressure plate 30, and the elastic friction strip 31 is used to contact and squeeze the wheel surface of the moving wheel 21 or the groove surface of the slot 211 to brake the moving wheel 21.

[0033] Through the above arrangement, the hydraulic cylinder 32 is used to synchronously push the pressure plate 30 down, thereby driving the elastic friction strip 31 to descend until it contacts and squeezes the wheel surface of the moving wheel 21 or the groove surface of the slot 211, so that the friction force provided by the squeezing of the two is used to implement braking.

[0034] Preferably, the width of the elastic friction strip 31 matches the width of the slot 211 , and the elastic friction strip 31 is used to contact and press the slot surface of the slot 211 to brake the moving wheel 21 .

[0035] Through the above arrangement, after the elastic friction strip 31 falls into the slot 211 and is squeezed, it will expand laterally, thereby being squeezed against the side wall of the slot 211, thereby increasing the contact area and improving the braking effect.

[0036] In order to further improve the braking effect, a tooth groove 212 is opened at the bottom of the groove 211 along the circumferential direction, and the groove width of the tooth groove 212 is narrower than the groove width of the groove 211; a rack 33 is inserted in the middle of the elastic friction strip 31, and the back side of the rack 33 is connected to the pressure plate 30, and the tooth surface of the rack 33 faces the tooth groove 212 and matches the tooth groove 212; when the elastic friction strip 31 is in a natural state, the tooth surface of the rack 33 is buried in the elastic friction strip 31; when the elastic friction strip 31 is embedded in the groove 211 and squeezed, the rack 33 extends out and can engage with the tooth groove 212.

[0037] Through the above arrangement, the soft friction brake is used to implement preliminary soft braking, which greatly reduces the speed of the moving vehicle 20, and then the rack 33 and the tooth groove 212 are meshed to implement subsequent hard braking, and the meshing method is used to completely brake.

[0038] In order to prevent the rack 33 from excessively squeezing and damaging the tooth groove 212 , the width of the pressure plate 30 is greater than the width of the slot 211 ; when the pressure plate 30 contacts the wheel surface of the moving wheel 21 , the rack 33 engages and engages with the tooth groove 212 .

[0039] In order to prevent the moving vehicle 20 from bouncing up due to slope problems during movement, causing the clamping edge 1121 to disengage from the clamping slot 211, a chuck 213 is coaxially connected to the outer side of the moving wheel 21, and a bearing is coaxially mounted between the chuck 213 and the moving wheel 21; the monorail 11 is provided with a side beam 113 extending along the length direction, and a limiting edge 1131 is convexly provided on the bottom surface of the side beam 113, and the bottom of the limiting edge 1131 is in contact with the outer surface of the bearing.

[0040] Through the above arrangement, the limiting edge 1131 and the clamping edge 1121 are used to clamp the moving wheel 21 from the upper and lower directions respectively, thereby effectively preventing the moving wheel 21 from being unnecessaryly displaced in a direction perpendicular to the track 10 .

[0041] In order to prevent the track 10 from being corroded by water or blocked by silt during normal use of the flood discharge surface hole flow channel, the above-mentioned hydropower station flood discharge surface hole flow channel inspection and maintenance system also includes a masking groove 1, which is opened on the bottom surface of the surface hole flow channel along the extension direction of the surface hole flow channel, the groove width of the masking groove 1 is greater than the vehicle width of the mobile vehicle 20, and the masking groove 1 is detachably provided with a sealing cover plate 2; the track 10 is arranged in the masking groove 1.

[0042] Through the above arrangement, after the inspection is completed, the mobile vehicle 20 is separated from the track 10 from the end of the track 10, and then the masking groove 1 is sealed and covered by the sealing cover plate 2, and then the flood discharge surface hole flow channel can be used normally.

[0043] Preferably, in order to adapt to mobile vehicles 20 with different wheelbases, the side wall of the masking groove 1 is provided with an adjustment groove 3, the monorail 11 is slidably arranged along the depth direction of the adjustment groove 3, and the monorail 11 is connected to the bottom of the adjustment groove 3 through multiple adjustment cylinders 4.

[0044] In order to further explain the specific structure of the angle adjustment mechanism, the angle adjustment mechanism includes an angle adjustment plate 40 and an angle adjustment cylinder 41. The angle adjustment plate 40 is hinged to the moving vehicle 20, and the two ends of the angle adjustment cylinder 41 are respectively hinged to the angle adjustment plate 40 and the moving vehicle 20; the lifting mechanism 20 is a scissor-type lifting platform.

[0045] Through the above arrangement, the angle adjustment plate 40 and the moving vehicle 20 can be driven to rotate relative to each other by utilizing the extension and retraction of the push rod of the angle adjustment cylinder 41 to adjust the horizontality of the maintenance platform 22 .

[0046] In order to further provide an emergency plan, the above-mentioned hydropower station flood discharge surface hole flow channel inspection and maintenance system also includes a safety cable 60 and a winding roller 61. One end of the safety cable 60 is connected to the mobile vehicle 20, and the other end is wound around the winding roller 61. The winding roller 61 is located at the starting point of the surface hole flow channel.

[0047] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A hydropower station flood discharge surface orifice flow channel inspection and maintenance system, characterized in that: include: A track (10), the track (10) extending along a surface hole flow channel, the track (10) comprising a pair of single rails (11), the single rails (11) being provided with a top beam (111) and a bottom beam (112) extending along a length direction, a clamping edge (1121) being convexly provided on a top surface of the bottom beam (112), the clamping edge (1121) extending along the length direction of the bottom beam (112); A mobile vehicle (20), wherein the mobile vehicle (20) is provided with two rows of mobile wheels (21), and the wheel surfaces of the mobile wheels (21) are provided with a clamping groove (211) matching the clamping edge (1121) along the circumferential direction; the top of the mobile vehicle (20) is connected to a lifting mechanism (50) through an angle adjustment mechanism, and the top of the lifting mechanism (50) is provided with a maintenance platform (22), and the angle adjustment mechanism can adjust the angle between the maintenance platform (22) and the mobile vehicle (20) so that the maintenance platform (22) maintains a horizontal position; A brake mechanism is provided on the bottom surface of the top beam (111), and is used to brake the moving wheel (21).

2. The hydropower station flood discharge surface orifice flow channel inspection and maintenance system according to claim 1 is characterized in that: The brake mechanism comprises a pressure plate (30), an elastic friction strip (31) and a plurality of hydraulic cylinders (32); the pressure plate (30) is arranged in parallel directly below the top beam (111) and is connected to the top beam (111) via the hydraulic cylinder (32) so that the pressure plate (30) can be moved close to or away from the bottom beam (112); The bottom surface of the pressing plate (30) is paved with the elastic friction strip (31), and the elastic friction strip (31) is used to contact and press the wheel surface of the moving wheel (21) or the groove surface of the clamping groove (211) to brake the moving wheel (21).

3. The hydropower station flood discharge surface orifice flow channel inspection and maintenance system according to claim 2 is characterized in that: The width of the elastic friction strip (31) matches the width of the clamping slot (211), and the elastic friction strip (31) is used to contact and press the groove surface of the clamping slot (211) to brake the moving wheel (21).

4. The hydropower station flood discharge surface orifice flow channel inspection and maintenance system according to claim 3 is characterized in that: The bottom of the clamping groove (211) is provided with a tooth groove (212) along the circumferential direction, and the groove width of the tooth groove (212) is narrower than the groove width of the clamping groove (211); A rack (33) is inserted in the middle of the elastic friction strip (31), the back side of the rack (33) is connected to the pressure plate (30), and the tooth surface of the rack (33) faces the tooth groove (212) and matches the tooth groove (212); When the elastic friction strip (31) is in a natural state, the tooth surface of the rack (33) is buried in the elastic friction strip (31); When the elastic friction strip (31) is embedded in the clamping groove (211) and squeezed, the rack (33) extends out and can be engaged with the tooth groove (212).

5. The hydropower station flood discharge surface orifice flow channel inspection and maintenance system according to claim 4 is characterized in that: The width of the pressing plate (30) is greater than the width of the card slot (211); When the pressing plate (30) contacts the wheel surface of the moving wheel (21), the rack (33) is meshed and engaged with the tooth groove (212).

6. The hydropower station flood discharge surface orifice flow channel inspection and maintenance system according to claim 5 is characterized in that: A chuck (213) is coaxially connected to the outer side of the moving wheel (21), and a bearing is coaxially sleeved between the chuck (213) and the moving wheel (21); The monorail (11) is provided with a side beam (113) extending in the length direction, and a limiting edge (1131) is convexly provided on the bottom surface of the side beam (113), and the bottom of the limiting edge (1131) contacts the outer surface of the bearing.

7. The hydropower station flood discharge surface orifice flow channel inspection and maintenance system according to any one of claims 1 to 6, characterized in that: It also comprises a masking groove (1), the masking groove (1) being opened on the bottom surface of the surface hole flow channel along the extension direction of the surface hole flow channel, the groove width of the masking groove (1) being greater than the vehicle width of the mobile vehicle (20), and the masking groove (1) being detachably provided with a sealing cover plate (2); The track (10) is arranged in the masking groove (1).

8. The hydropower station flood discharge surface orifice flow channel inspection and maintenance system according to claim 7 is characterized in that: An adjustment groove (3) is excavated on the side wall of the masking groove (1), the monorail (11) is slidably arranged along the depth direction of the adjustment groove (3), and the monorail (11) is connected to the bottom of the adjustment groove (3) via a plurality of adjustment cylinders (4).

9. The hydropower station flood discharge surface orifice flow channel inspection and maintenance system according to claim 1, characterized in that: The angle adjustment mechanism comprises an angle adjustment plate (40) and an angle adjustment cylinder (41); the angle adjustment plate (40) is hinged to the moving vehicle (20); and two ends of the angle adjustment cylinder (41) are respectively hinged to the angle adjustment plate (40) and the moving vehicle (20); The lifting mechanism (50) is a scissor-type lifting platform.

10. The hydropower station flood discharge surface orifice flow channel inspection and maintenance system according to claim 1, characterized in that: It also includes a safety cable (60) and a winding roller (61), one end of the safety cable (60) is connected to the moving vehicle (20), and the other end is wound around the winding roller (61), and the winding roller (61) is arranged at the starting point of the surface hole flow channel.

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