Anti-falling device applied to vertical shaft of pumped storage power station
By designing a fall-proof device for the vertical shaft of the pumped storage power station, the winding wheel and angular velocity sensors are used to monitor the rotation speed of the cable, and fix the cable through an electric telescopic rod, the problem of falling risk during construction is solved, and safety and applicability are improved.
Patent Information
- Application Number
- CN202421635966.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-11
AI Technical Summary
During the construction of the vertical shaft of the pumped storage power station, it is difficult for staff to climb ladders, have high labor intensity, and are inconvenient to transport materials. Anti-fall equipment is needed to ensure construction safety.
An anti-fall device is designed, including a support seat, a guide wheel, a winding wheel, an electric telescopic rod and an angular velocity sensor. The rotation speed of the winding wheel is monitored by the angular velocity sensor on the winding wheel. When the speed reaches the set value, the electric telescopic rod starts, the clamp moves to the limiting plate, and the cable is fixed to prevent it from falling.
Automatic fixation of cables is achieved, ensuring the safety of staff, and improving the applicability of the device in shafts of different depths. The multiple electric telescopic rods have improved risk resistance, and other components can still work properly when a single component is damaged.
Smart Images
Figure CN222743910U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anti-falling devices, in particular to an anti-falling device applied to a vertical shaft of a pumped storage power station. Background Art
[0002] At present, many regions have reservoirs. As an important water resource, reservoirs have always been highly valued. At the same time, many reservoir locations often build energy storage power stations to utilize water resources and store electricity. Pumped storage power stations use electricity during low power load to pump water to the upper reservoir, and release water to the lower reservoir for power generation during peak power load. The hydropower station is also called an energy storage hydropower station. The vertical shaft, the well-shaped pipeline with the cave wall upright, is called a vertical shaft. In order to meet different conditions and requirements for the functions of hydraulic structures, hydropower stations set up underground vertical shaft gate shafts, pressure regulating shafts, and vertical and inclined shaft pressure pipelines;
[0003] Although the ordinary well digging reverse well method has the advantages of small auxiliary engineering volume, small mutual impact with other operations, and no need for large-scale lifting equipment, it is difficult for workers to climb up and down ladders, the labor intensity is high, and the material transportation is inconvenient. In order to ensure the safety during construction, anti-fall equipment is required to ensure the safety of shaft construction.
[0004] Therefore, it is necessary to provide a fall prevention device applied to the shaft of a pumped-storage power station to solve the above-mentioned technical problems. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides an anti-falling device applied to the shaft of a pumped storage power station.
[0006] The utility model provides an anti-fall device for a vertical shaft of a pumped storage power station, comprising: a support seat, the top of the support seat is respectively connected to a first support plate and a second support plate, a through hole is opened in the support seat between the first support plate and the second support plate, the tops of the first support plate and the second support plate are fixedly connected to an upper support plate, the bottom of the upper support plate is connected to a first connection frame and a second connection frame, a guide wheel is arranged on the inner side of the first connection frame, both ends of the guide wheel are connected to the inner wall of the first connection frame through a guide shaft, the inner wall of the second connection frame is rotatably connected to a rotating rod, the outer side wall of the rotating rod is rotatably connected to a winding wheel, a cable is wound on the winding wheel, one end of the cable is connected to a connecting ring by bypassing the guide wheel, the lower ends of the opposite inner walls of the first connection frame are respectively connected to a first limiting plate and a second limiting plate, the end surface of the second limiting plate facing the first limiting plate is installed with a first electric telescopic rod, one end of the first electric telescopic rod is connected to a first clamping plate, an angular velocity sensor 1 and an angular velocity sensor 2 are installed on the winding wheel, and the first electric telescopic rod is electrically connected to the angular velocity sensor 1.
[0007] Preferably, a third limit plate and a fourth limit plate are connected to both ends of the bottom of the upper support plate on one side of the winding wheel, a second electric telescopic rod is installed on the end surface of the third limit plate facing the fourth limit plate, one end of the second electric telescopic rod is connected to the second clamping plate, and the second electric telescopic rod is electrically connected to the second angular velocity sensor.
[0008] Preferably, there are multiple first electric telescopic rods and second electric telescopic rods, the first electric telescopic rods are linearly arranged on the end surface of the first limiting plate, the second electric telescopic rods are linearly arranged on the end surface of the third limiting plate, and the first electric telescopic rods and the second electric telescopic rods are electrically connected to an angular velocity sensor.
[0009] Preferably, a plurality of fixed shafts are provided at the bottom of the support seat, and the bottom ends of the fixed shafts are pointed.
[0010] Preferably, the end surfaces of the first clamping plate and the second clamping plate are respectively provided with a first convex pattern and a third convex pattern.
[0011] Preferably, the bottoms of the first limiting plate and the second limiting plate are respectively connected to the two ends of the lower limiting plate, the top of the lower limiting plate is provided with a limiting hole for the cable to pass through, and a buffer made of plastic is installed inside the limiting hole.
[0012] Preferably, an emergency stop assembly is provided on the inner wall of the second connecting frame, and the emergency stop assembly includes a power module, a mounting box, a cylinder, a sleeve rod, and a gear. The gear is connected to the outer side wall of the rotating rod by a key, and the power module, the mounting box, and the cylinder are fixed to the inner side wall of the second connecting frame by bolts. The telescopic end of the cylinder is connected to a tooth plate by a key, and the tooth plate is meshed with the gear. A coil tube, a metal rod, and a limit plate are welded to the inner side wall of the mounting box. The inner side wall of the mounting box is slidably connected to a sliding plate, and a sliding plate is welded to the outer wall of the bottom of the sliding plate, and the sliding plate is in contact with the metal rod.
[0013] Preferably, the limit plate cooperates with the sliding plate, the coil tube is provided with terminals on the outside, the power module and the cylinder are connected to two groups of terminals through wires, a connector is welded on the outer side wall of the sliding plate, a contact disk is welded on the outer side wall of the connector, the sleeve rod is welded to the outer side wall of the rotating rod, and the contact disk is in contact with the sleeve rod.
[0014] Compared with the related art, the anti-fall device applied to the shaft of a pumped storage power station provided by the utility model has the following beneficial effects:
[0015] 1. The utility model can monitor the rotation speed of the winding wheel by installing an angular velocity sensor on the winding wheel. When the rotation speed is lower than the set value, the first electric telescopic rod will not start. At this time, the gap between the clamping plate and the first limit plate is larger than the diameter of the cable, so that the cable can be smoothly stretched from between the first clamping plate and the first limit plate. When the rotation speed is greater than the set value, the first electric telescopic rod can be started to make the clamping plate move quickly toward the first limit plate, clamping the cable between the first clamping plate and the first limit plate, thereby fixing the cable and preventing it from falling further downward, thereby ensuring the safety of the staff. In addition, the device can be used in shafts of different depths by winding the cable through the winding wheel, thereby improving the applicability of the device.
[0016] 2. The utility model can improve the risk resistance of the device by setting a plurality of first electric telescopic rods and second electric telescopic rods, and prevent the damage of a single first electric telescopic rod or a second electric telescopic rod, while the other first electric telescopic rods or the second electric telescopic rods can still operate normally, thereby fixing the cable;
[0017] 3. The utility model can provide resistance during the stretching of the cable by setting the limit holes and the buffer parts, thereby increasing the reaction time when a fall occurs and facilitating the fixing of the cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A structural schematic diagram of a preferred embodiment of a fall prevention device applied to a shaft of a pumped storage power station provided by the utility model;
[0019] Figure 2 for Figure 1 A schematic structural diagram of the first limiting plate and the second limiting plate shown;
[0020] Figure 3 for Figure 1 A schematic diagram of the structure of the third limiting plate and the fourth limiting plate shown;
[0021] Figure 4 A schematic diagram of the inner wall structure of a second connection frame of an anti-fall device applied to a shaft of a pumped storage power station provided by the utility model;
[0022] Figure 5 The utility model provides an emergency stop assembly for a fall prevention device applied to a shaft of a pumped storage power station;
[0023] Figure 6 A schematic diagram of the structure of an installation box of a fall prevention device applied to a shaft of a pumped storage power station provided by the utility model;
[0024] Figure 7The utility model provides an outer portion of a sliding plate of an anti-fall device applied to a shaft of a pumped storage power station;
[0025] Figure 8 A schematic cross-sectional view of the structure of an installation box of a fall prevention device applied to a shaft of a pumped storage power station provided by the utility model;
[0026] Fig. 9 for Figure 8 A local enlarged structural schematic diagram is shown.
[0027] Numbers in the figure: 1. support seat; 2. first support plate; 3. second support plate; 4. upper support plate; 5. cable; 6. connecting ring; 7. through hole; 8. fixed shaft; 9. first connecting frame; 10. second connecting frame; 11. guide wheel; 12. winding wheel; 13. first limit plate; 14. second limit plate; 15. first electric telescopic rod; 16. first clamping plate; 17. third limit plate; 18. fourth limit plate; 19. second electric telescopic rod; 20. second clamping plate; 21. lower limit plate; 22. limit hole; 23. buffer; 24. rotating rod; 25. power module; 26. installation box; 27. cylinder; 28. contact plate; 29. tooth plate; 30. sleeve rod; 31. gear; 32. connector; 33. sliding plate; 34. coil tube; 35. metal rod; 36. slide; 37. limit plate. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0029] A novel specific implementation of a fall prevention device applied to a shaft of a pumped-storage power station is described in detail below in conjunction with a specific embodiment.
[0030] Example 1
[0031] refer to Figures 1 to 3The utility model provides a fall prevention device for a vertical shaft of a pumped storage power station, comprising: a support seat 1, the top of the support seat 1 is respectively connected to a first support plate 2 and a second support plate 3, a through hole 7 is opened in the support seat 1 between the first support plate 2 and the second support plate 3, an upper support plate 4 is fixedly connected to the top of the first support plate 2 and the second support plate 3, a first connection frame 9 and a second connection frame 10 are connected to the bottom of the upper support plate 4, a guide wheel 11 is provided on the inner side of the first connection frame 9, and both ends of the guide wheel 11 are connected to the inner wall of the first connection frame 9 through a guide shaft, and the inner wall of the second connection frame 10 is rotatably connected There is a rotating rod 24, and the outer side wall of the rotating rod 24 is rotatably connected to a winding wheel 12, a cable 5 is wound on the winding wheel 12, one end of the cable 5 is passed around the guide wheel 11 and connected to the connecting ring 6, the lower ends of the opposite inner walls of the first connecting frame 9 are respectively connected to the first limit plate 13 and the second limit plate 14, the end surface of the second limit plate 14 facing the first limit plate 13 is installed with a first electric telescopic rod 15, one end of the first electric telescopic rod 15 is connected to the first clamping plate 16, angular velocity sensor 1 and angular velocity sensor 2 are installed on the winding wheel 12, and the first electric telescopic rod 15 is electrically connected to the angular velocity sensor 1.
[0032] It should be noted that: by setting the connecting ring 6, it can be connected to the hook installed on the operator, and when the operator descends, the cable 5 can be slowly stretched, and the winding wheel 12 can be driven to rotate. The rotation speed of the winding wheel 12 can be monitored by the angular velocity sensor installed on the winding wheel 12. When the rotation speed is lower than the set value, the first electric telescopic rod 15 will not start. At this time, the gap between the clamping plate and the first limit plate 13 is larger than the diameter of the cable 5, so that the cable 5 can be smoothly stretched from the first clamping plate 16 to the first limit plate 13. When the rotation speed is greater than the set value, the first electric telescopic rod 15 can be started to make the clamping plate move quickly toward the first limit plate 13, and the cable 5 can be clamped between the first clamping plate 16 and the first limit plate 13, so as to fix the cable 5 and prevent it from falling further downward, thereby ensuring the safety of the staff. In addition, the device can be used in shafts of different depths through the winding wheel 12, by winding the cable 5, thereby improving the applicability of the device. After use, the winding wheel 12 can be driven manually or by a corresponding motor to rotate in the opposite direction to retract the cable 5.
[0033] In the embodiments of the present invention, reference is made to Figure 3As shown, the two ends of the bottom of the upper support plate 4 on one side of the winding wheel 12 are connected with a third limit plate 17 and a fourth limit plate 18, and the end surface of the third limit plate 17 facing the fourth limit plate 18 is installed with a second electric telescopic rod 19, one end of the second electric telescopic rod 19 is connected to the second clamping plate 20, and the second electric telescopic rod 19 is electrically connected to the angular velocity sensor 2.
[0034] It should be noted that: by providing the second electric telescopic rod 19 and the second clamping plate 20, when the rotation speed is greater than the set value, the second electric telescopic rod 19 can be started to make the clamping plate quickly move toward the third limit plate 17, so that the cable 5 is clamped between the second clamping plate 20 and the third limit plate 17, and cooperates with the first electric telescopic rod 15 to fix the cable 5;
[0035] In the embodiments of the present invention, reference is made to Figure 2 , Figure 3 As shown, there are multiple first electric telescopic rods 15 and second electric telescopic rods 19 , the first electric telescopic rods 15 are linearly arranged on the end surface of the first limiting plate 13 , and the second electric telescopic rods 19 are linearly arranged on the end surface of the third limiting plate 17 .
[0036] It should be noted that by providing multiple first electric telescopic rods 15 and second electric telescopic rods 19, the risk resistance of the device can be improved to prevent a single first electric telescopic rod 15 or second electric telescopic rod 19 from being damaged. The other first electric telescopic rods 15 or second electric telescopic rods 19 can still operate normally to fix the cable 5.
[0037] In the embodiments of the present invention, reference is made to Figure 1 As shown, a plurality of fixed shafts 8 are provided at the bottom of the support seat 1, and the bottom ends of the fixed shafts 8 are pointed.
[0038] It should be noted that: by providing a fixed shaft 8 with a pointed bottom end, it can be embedded into the ground on one side of the shaft, thereby improving the stability of the support base 1.
[0039] In the embodiment of the present invention, the end surfaces of the first clamping plate 16 and the second clamping plate 20 are respectively provided with a first convex pattern and a third convex pattern.
[0040] It should be noted that by providing the first convex pattern and the second convex pattern, the friction between the first clamping plate 16 or the second clamping plate and the cable 5 can be increased, thereby improving the stability of fixing the cable 5 .
[0041] In the embodiments of the present invention, reference is made to Figure 3As shown, the bottoms of the first limiting plate 13 and the second limiting plate 14 are respectively connected to the two ends of the lower limiting plate 21, and the top of the lower limiting plate 21 is provided with a limiting hole 22 through which the cable 5 passes, and a buffer 23 made of plastic is installed inside the limiting hole 22.
[0042] It should be noted that by providing the limiting hole 22 and the buffer member 23, resistance can be provided during the stretching of the cable 5, thereby increasing the reaction time when a fall occurs, making it easier to fix the cable 5.
[0043] The working principle of the anti-fall device applied to the shaft of a pumped storage power station provided by the utility model is as follows:
[0044] By setting a connecting ring 6, it can be connected to a hook installed on the operator, and when the operator descends, the cable 5 can be slowly driven to stretch, and the winding wheel 12 can be driven to rotate accordingly. The rotation speed of the winding wheel 12 can be monitored by the angular velocity sensor installed on the winding wheel 12. When the rotation speed is lower than the set value, the first electric telescopic rod 15 will not start. At this time, the gap between the clamping plate and the first limiting plate 13 is larger than the diameter of the cable 5, so that the cable 5 can be smoothly stretched from the first clamping plate 16 and the first limiting plate 13. When the rotation speed is greater than the set value, the first electric telescopic rod 15 can be started to make the clamping plate move quickly toward the first limiting plate 13, and the cable 5 can be clamped between the first clamping plate 16 and the first limiting plate 13, so as to fix the cable 5 and prevent it from falling further downward, thereby ensuring the safety of the staff. In addition, the device can be used in shafts of different depths through the winding wheel 12 and the winding cable 5, thereby improving the applicability of the device.
[0045] Example 2
[0046] In the embodiments of the present invention, reference is made to Figure 4-Figure 9As shown, the inner wall of the second connection frame 10 is provided with an emergency stop assembly, and the emergency stop assembly includes a power module 25, an installation box 26, a cylinder 27, a sleeve rod 30, and a gear 31. The gear 31 is connected to the outer side wall of the rotating rod 24 by a key. The power module 25, the installation box 26, and the cylinder 27 are all fixed to the inner side wall of the second connection frame 10 by bolts. The telescopic end of the cylinder 27 is connected to a toothed plate 29 by a key, and the toothed plate 29 is meshed with the gear 31. The inner side wall of the installation box 26 is welded with a coil barrel 34, a metal rod 35, and a limit plate 37. The inner side wall of the box 26 is slidably connected with a sliding plate 33, and a sliding sheet 36 is welded to the outer wall of the bottom of the sliding plate 33, and the sliding sheet 36 is in contact with the metal rod 35. The limit plate 37 cooperates with the sliding plate 33. The coil barrel 34 is provided with a terminal on the outside, and the power module 25 and the cylinder 27 are connected to two groups of terminals through wires. A connector 32 is welded to the outer side wall of the sliding plate 33, and a contact plate 28 is welded to the outer side wall of the connector 32. The sleeve rod 30 is welded to the outer side wall of the rotating rod 24, and the contact plate 28 is in contact with the sleeve rod 30.
[0047] It should be noted that: when the first electric telescopic rod 15 or the second electric telescopic rod 19 is damaged at the same time, the rotation speed of the rotating rod 24 is too fast, and the unwinding is too fast, the sleeve rod 30 can contact the contact plate 28 under the action of centrifugal force, so that the contact plate 28 drives the sliding plate 33 to slide, thereby reducing the resistance of the coil tube 34, and the metal rod 35 can realize the power supply to the cylinder 27, so that the cylinder 27 quickly pushes the tooth plate 29 to engage with the gear 31, thereby realizing a quick emergency stop of the rotating rod 24.
[0048] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.
[0049] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A fall prevention device used in a vertical shaft of a pumped storage power station, characterized in that: include: A support seat (1), the top of the support seat (1) is respectively connected to a first support plate (2) and a second support plate (3), a through hole (7) is opened in the support seat (1) between the first support plate (2) and the second support plate (3), the tops of the first support plate (2) and the second support plate (3) are fixedly connected to an upper support plate (4), the bottom of the upper support plate (4) is connected to a first connection frame (9) and a second connection frame (10), a guide wheel (11) is provided on the inner side of the first connection frame (9), the two ends of the guide wheel (11) are connected to the inner wall of the first connection frame (9) through a guide shaft, the inner wall of the second connection frame (10) is rotatably connected to a rotating rod (24), and the rotating rod (2 4) The outer side wall is rotatably connected to a winding wheel (12), a cable (5) is wound on the winding wheel (12), one end of the cable (5) passes around the guide wheel (11) and is connected to the connecting ring (6), the lower ends of the opposite inner walls of the first connecting frame (9) are respectively connected to a first limiting plate (13) and a second limiting plate (14), the end surface of the second limiting plate (14) facing the first limiting plate (13) is equipped with a first electric telescopic rod (15), one end of the first electric telescopic rod (15) is connected to a first clamping plate (16), an angular velocity sensor 1 and an angular velocity sensor 2 are installed on the winding wheel (12), and the first electric telescopic rod (15) is electrically connected to the angular velocity sensor 1.
2. The anti-fall device used in the shaft of a pumped storage power station according to claim 1, characterized in that: A third limiting plate (17) and a fourth limiting plate (18) are connected at both ends of the bottom of the upper support plate (4) on one side of the winding wheel (12); a second electric telescopic rod (19) is installed on the end surface of the third limiting plate (17) facing the fourth limiting plate (18); one end of the second electric telescopic rod (19) is connected to a second clamping plate (20); and the second electric telescopic rod (19) is electrically connected to the second angular velocity sensor.
3. The anti-fall device used in the shaft of a pumped storage power station according to claim 2, characterized in that: The number of the first electric telescopic rods (15) and the second electric telescopic rods (19) is plural; the first electric telescopic rods (15) are linearly arranged and distributed on the end surface of the first limiting plate (13); and the second electric telescopic rods (19) are linearly arranged and distributed on the end surface of the third limiting plate (17).
4. The anti-fall device used in the shaft of a pumped storage power station according to claim 1, characterized in that: A plurality of fixed shafts (8) are provided at the bottom of the support seat (1), and the bottom ends of the fixed shafts (8) are pointed.
5. The anti-fall device used in the shaft of a pumped storage power station according to claim 1, characterized in that: The end surfaces of the first clamping plate (16) and the second clamping plate (20) are respectively provided with a first convex pattern and a third convex pattern.
6. The anti-fall device used in the shaft of a pumped storage power station according to claim 1, characterized in that: The bottoms of the first limiting plate (13) and the second limiting plate (14) are respectively connected to the two ends of the lower limiting plate (21); the top of the lower limiting plate (21) is provided with a limiting hole (22) through which the cable (5) passes; a buffer part (23) made of plastic is installed inside the limiting hole (22).
7. The anti-fall device used in the shaft of a pumped storage power station according to claim 1, characterized in that: The inner wall of the second connection frame (10) is provided with an emergency stop assembly, which comprises a power module (25), a mounting box (26), a cylinder (27), a sleeve rod (30), and a gear (31). The gear (31) is connected to the outer side wall of the rotating rod (24) through a key. The power module (25), the mounting box (26), and the cylinder (27) are all fixed to the inner side wall of the second connection frame (10) through bolts. The telescopic end of the cylinder (27) is connected to a toothed plate (29) through a key. The toothed plate (29) is meshed with the gear (31). The inner side wall of the mounting box (26) is welded with a coil barrel (34), a metal rod (35), and a limit plate (37). The inner side wall of the mounting box (26) is slidably connected with a sliding plate (33). A sliding sheet (36) is welded to the outer wall of the bottom of the sliding plate (33). The sliding sheet (36) is in contact with the metal rod (35).
8. The anti-fall device used in the shaft of a pumped storage power station according to claim 7, characterized in that: The limit plate (37) cooperates with the sliding plate (33), the coil barrel (34) is provided with a terminal outside, the power module (25) and the cylinder (27) are connected to two groups of terminal posts through wires, a connector (32) is welded to the outer side wall of the sliding plate (33), a contact plate (28) is welded to the outer side wall of the connector (32), the sleeve rod (30) is welded to the outer side wall of the rotating rod (24), and the contact plate (28) is in contact with the sleeve rod (30).