Bidirectional gate type hoist trolley walking structure for hydropower station

Abstract

The utility model discloses a two -way door type headstock gear walking structure for hydropower station belongs to hydropower station equipment technical field, this structure includes support leg and quick -release mechanism, and the connecting tongue of quick -release mechanism inserts support leg, and the sliding locking door is equipped in support leg, and this locking door can slide and is connected with the connecting tongue, and the reinforcing plate is rotatably connected on support leg, and the reinforcing plate can rotate and shield the locking door, and is locked by bolt and nut, has realized the integral modularization quick assembly and disassembly of walking part, simultaneously, through being equipped with annular locking rail on the wheel shaft of quick -release mechanism, and using the upper and lower locking ring of pivotable opening and closing is connected in the locking rail, has realized the quick replacement of single wheel group. The utility model solves the problem of existing walking structure dismouting complex, maintenance time -consuming long, through two -stage quick -release design, has improved maintenance efficiency significantly, has greatly shortened equipment downtime, and has reduced maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of hydropower station equipment technology, and in particular to a bidirectional gantry crane traveling structure for hydropower stations. Background Technology

[0002] Gantry cranes are key equipment used in water conservancy projects such as hydropower stations and reservoirs to operate the lifting and lowering of gates. Their trolley traveling structure is responsible for carrying the entire crane body and moving it along a preset track to the designated gate position for operation. The reliability of the trolley traveling structure is directly related to the safety and operational efficiency of the entire water conservancy project.

[0003] Currently, in existing gantry crane trolley traveling structures, the connection between the traveling components (including wheel sets, wheel frames, etc.) and the supporting legs, which serve as the main load-bearing frame, is typically achieved through integral welding or a complex connection using multiple sets of high-strength bolts. While this design ensures sufficient connection strength and structural stability during normal operation, it also introduces a significant technical drawback.

[0004] As gate hoists operate under high loads and humid conditions for extended periods, their traveling components, especially the wheels and related transmission mechanisms, inevitably experience wear, fatigue, and even damage, requiring regular inspection, maintenance, or replacement. When using the traditional fixed connection method, whether performing a complete overhaul of the traveling components or simply replacing a damaged wheel, complex on-site disassembly is essential. This typically involves removing numerous fastening bolts, or, in more extreme cases, cutting and re-welding. The entire process is not only time-consuming and labor-intensive, but also demands a high level of space and equipment availability on-site.

[0005] This lengthy maintenance process requires the gate hoist to be shut down for extended periods, directly impacting the normal power generation of the hydropower station or the reservoir's dispatching capacity, resulting in significant indirect economic losses. Simultaneously, the complex disassembly and assembly procedures significantly increase maintenance labor costs and safety risks.

[0006] Therefore, this utility model proposes a bidirectional gantry crane traveling structure for hydropower stations to address the shortcomings of existing technologies. Utility Model Content

[0007] To overcome the above shortcomings, this utility model provides a bidirectional gantry crane traveling structure for hydropower stations, aiming to improve the problems of complex disassembly and assembly, long time consumption, and high maintenance costs of the existing crane traveling structure when repairing or replacing traveling parts.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a traveling structure for a bidirectional gantry crane in a hydropower station, comprising: a modular mechanism, a support leg, and a quick-release mechanism disposed at the lower end of the support leg. The quick-release mechanism includes a wheel frame, a splicing column fixed to the upper end of the wheel frame, a connecting tongue connected to the upper end of the splicing column, and the connecting tongue being detachably inserted into the lower part of the support leg. A locking groove is provided inside the support leg, a locking door is slidably connected in the locking groove, a reinforcing plate is rotatably connected to the support leg, a rotating bolt is fixed on the reinforcing plate, and a locking plate is fixed on the support leg.

[0009] The locking door has a locking position that can slide to engage with the connecting tongue, and the reinforcing plate has a reinforcing position that can rotate to block the locking door and prevent it from sliding.

[0010] Furthermore, when the reinforcing plate is in the reinforced position, the rotating bolt passes through the locking plate and is locked by the locking nut. The reinforcing plate is fixed in the reinforced position by the locking nut, thereby securing the locking door in the locked position and ultimately achieving reliable locking of the connecting tongue.

[0011] Preferably, the reinforcing plate is rotatably connected to the supporting leg via a connecting lug and a rotating shaft, providing a stable pivot for the rotation of the reinforcing plate.

[0012] Preferably, a connecting bolt is fixed on the connecting tongue, the connecting bolt passes through the corresponding hole of the support leg and is threadedly connected to the fixing nut, providing a basic fastening force between the connecting tongue and the support leg.

[0013] Preferably, a lever is fixedly connected to the locking door to facilitate the operator to drive the locking door to slide.

[0014] Preferably, the quick-release mechanism has a wheel axle detachably mounted on the wheel frame, and a track wheel is rotatably connected to the wheel axle; an annular locking rail is provided on the outer periphery of the end of the wheel axle; the quick-release mechanism also includes an upper locking ring and a lower locking ring, which are combined into a ring and engaged in the locking rail, thereby realizing the quick fixing and release of the wheel axle.

[0015] Preferably, one end of the upper locking ring is provided with a sliding post, and the corresponding end of the lower locking ring is provided with a sliding groove. The sliding post and the sliding groove are rotatably engaged to form an opening and closing pivot between the upper locking ring and the lower locking ring.

[0016] Preferably, the upper locking ring and the lower locking ring are respectively fixed with lugs at the ends away from the sliding post, and the two lugs are fastened together by nuts to lock the upper and lower locking rings.

[0017] Preferably, the support legs are fixed to both ends of the support plate, and the support legs and the support plate together form a stable portal support mechanism.

[0018] Preferably, a crane room and an operator's cab are fixed on the upper part of the support plate, and a hoisting mechanism is connected inside the crane room, forming a complete upper structure of the gantry crane.

[0019] This utility model has the following beneficial effects: 1. In this utility model, by setting a sliding locking door and a rotatable locking reinforcing plate, the step-by-step locking and quick release of the connecting tongue is realized, so that the entire quick-release mechanism can be quickly separated from the support leg as a complete module. This solves the problems of complex disassembly and assembly structure, long time consumption, and high equipment downtime costs when the walking parts are overhauled in the prior art. It achieves the technical effect of modular quick replacement of the entire walking parts, greatly shortens the downtime of major maintenance, and improves the maintainability and availability of the equipment.

[0020] 2. In this utility model, by setting a locking rail on the wheel axle and using upper and lower locking rings that can be pivotally opened and closed to be inserted into the locking rail for axial fixation, the problem of low maintenance efficiency and cumbersome operation caused by the need for complex disassembly when replacing a single worn track wheel in the prior art is solved. The present invention achieves the technical effect of quickly replacing the track wheel and wheel axle assembly by simply loosening a single nut, which significantly reduces the difficulty and time cost of daily maintenance and improves maintenance efficiency.

[0021] 3. In this utility model, by setting support legs, locking doors, reinforcing plates and connecting tongues, and using bolts and nuts for multiple locking, a stable and reliable connection structure is formed. This solves the problem that some quick-release structures in the prior art have insufficient connection strength and safety hazards under heavy load conditions. It achieves the technical effect of ensuring that the entire walking structure is stable and safe to operate under heavy load and high frequency operation in hydropower stations. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the traveling structure of a bidirectional gantry crane for a hydropower station proposed in this utility model. Figure 2 This is a schematic diagram of the crane room structure of the trolley traveling structure of a two-way gantry crane for a hydropower station proposed in this utility model. Figure 3 This utility model provides a schematic diagram of the connecting tongue portion of the traveling structure of a bidirectional gantry crane for a hydropower station. Figure 4This is a schematic diagram of the track wheel section of the traveling structure of a two-way gantry crane for a hydropower station, as proposed in this utility model. Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0023] Legend: 1. Support mechanism; 101. Crane room; 102. Support plate; 103. Operator's cab; 104. Support leg; 105. Lifting mechanism; 2. Modular mechanism; 201. Splicing column; 202. Connecting tongue; 203. Connecting bolt; 204. Fixing nut; 205. Connecting ear; 206. Rotating shaft; 207. Reinforcing plate; 208. Locking door; 209. Locking groove; 210. Locking plate; 211. Rotating bolt; 212. Locking nut; 213. Pulley; 3. Quick release mechanism; 301. Wheel frame; 302. Track wheel; 303. Wheel axle; 304. Locking rail; 305. Upper locking ring; 306. Lower locking ring; 307. Sliding column; 308. Sliding groove; 309. Nut; 310. Threaded ear. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please refer to Figures 1 to 5 This utility model provides a bidirectional gantry crane traveling structure for hydropower stations, aiming to solve the problems of complex disassembly and assembly, long time consumption, and high maintenance costs of the existing crane traveling structure when repairing or replacing traveling parts.

[0026] The bidirectional gantry crane traveling structure of the hydropower station includes a support mechanism 1 and a quick-release mechanism 3 set at the lower end of the support mechanism 1. The quick-release mechanism 3 is detachably connected to the support mechanism 1 through a modular mechanism 2. The support mechanism 1, as the main load-bearing body of the entire device, provides a stable installation foundation for the upper crane room 101, the control room 103, and the lower traveling components. The core function of the modular mechanism 2 is to enable the quick-release mechanism 3 as a whole module to be quickly separated and assembled from the support mechanism 1. The quick-release mechanism 3, as the traveling part that is in direct contact with the track, is responsible for bearing and driving the movement of the entire machine.

[0027] The support mechanism 1 includes support legs 104 that are vertically arranged at both ends. A horizontal support plate 102 is fixedly connected between the upper ends of the two support legs 104. A crane room 101 and an operator's cab 103 are fixed on the upper part of the support plate 102. A liftable hoisting mechanism 105 is connected inside the crane room 101. The entire support mechanism 1 forms a stable portal frame structure.

[0028] The quick-release mechanism 3 includes a wheel frame 301, with a splicing post 201 fixed to the upper end of the wheel frame 301. The upper end of the splicing post 201 is integrally connected to an upwardly extending connecting tongue 202. In the assembled state, the connecting tongue 202 is detachably inserted into the receiving cavity opened at the lower end of the support leg 104. To achieve this detachable locking, a locking groove 209 is opened vertically inside the support leg 104. A locking door 208 is slidably connected in the locking groove 209. The locking door 208 has a locked position and an unlocked position. When the locking door 208 slides down along the locking groove 209 to the locked position, the lower end of the locking door 208 engages with the upper surface of the connecting tongue 202, thereby preventing the connecting tongue 202 from coming out of the support leg 104. When the locking door 208 slides up along the locking groove 209 to the unlocked position, the locking door 208 disengages from the connecting tongue 202, allowing the connecting tongue 202 to move horizontally out.

[0029] To ensure the absolute reliability of the locking door 208 in the locked position and prevent accidental sliding due to vibration or other reasons, a reinforcing plate 207 is rotatably connected to the support leg 104. The reinforcing plate 207 has a reinforced position and an unlocked position that can rotate around the rotation axis 206. In the reinforced position, the main body of the reinforcing plate 207 is flat against the outer wall of the support leg 104, while its inner side blocks and abuts against the outer wall of the locking door 208, thereby physically preventing the locking door 208 from sliding to the unlocked position. In the unlocked position, the reinforcing plate 207 rotates downward and disengages from blocking the locking door 208.

[0030] Specifically, one end of the reinforcing plate 207 is rotatably connected to the support leg 104 via a connecting lug 205 and a rotating shaft 206. This connection provides a stable pivot for the rotation of the reinforcing plate 207. To securely lock the reinforcing plate 207 in the reinforced position, a rotating bolt 211 is fixed perpendicularly to the plate surface on the reinforcing plate 207. A locking plate 210 is fixedly welded to the corresponding position on the support leg 104. The locking plate 210 has a through hole for the rotating bolt 211 to pass through. When the reinforcing plate 207 is in the reinforced position, the rotating bolt 211 passes through the through hole of the locking plate 210. At this time, the locking nut 212 is tightened from the outside, and the locking nut 212 firmly presses the reinforcing plate 207 and fixes it to the support leg 104, thus achieving secondary locking of the locking door 208.

[0031] In addition, to facilitate the sliding operation of the locking door 208, a lever 213 is fixedly connected to the outer side of the locking door 208. The operator can easily drive the locking door 208 to slide up and down within the locking groove 209 by moving the lever 213, thereby switching between locking and unlocking. To enhance the connection strength between the connecting tongue 202 and the support leg 104, a connecting bolt 203 is also fixed to the connecting tongue 202. During assembly, the connecting bolt 203 passes through the corresponding hole in the support leg 104 and is locked from the other side by the fixing nut 204, providing a basic fastening force for the connection of the entire module.

[0032] The internal structure of the quick-release mechanism 3 is designed to enable the rapid replacement of a single track wheel 302. A wheel axle 303 is detachably mounted on the wheel frame 301 of the quick-release mechanism 3. The track wheel 302 is rotatably connected to the wheel axle 303 via bearings. A ring-shaped locking rail 304 is machined around the outer periphery of the end of the wheel axle 303. The locking rail 304, as a key locking component, has a groove-shaped cross-section. To quickly fix the wheel axle 303 axially, the quick-release mechanism 3 includes an openable upper locking ring 305 and a lower locking ring 306. Both the upper locking ring 305 and the lower locking ring 306 are semi-circular structures. In the closed state, they combine to form a complete ring, and the inner sides of the two semi-rings together form an annular flange that matches the shape and size of the locking rail 304. This flange engages precisely within the groove of the locking rail 304, thereby achieving axial locking of the wheel axle 303 and preventing the wheel axle 303 from being pulled out of the wheel frame 301.

[0033] In order to realize the opening and closing action of the upper locking ring 305 and the lower locking ring 306, in a preferred embodiment, one end of the upper locking ring 305 is integrally formed with a downwardly extending sliding post 307, while the corresponding end of the lower locking ring 306 is provided with a sliding groove 308 into which the sliding post 307 can be inserted. The outer diameter of the sliding post 307 and the inner diameter of the sliding groove 308 are rotatably engaged. Thus, the sliding post 307 and the sliding groove 308 together form a stable rotational pivot, so that the upper locking ring 305 can rotate around the lower locking ring 306 to open or close like a clam shell.

[0034] As a locking method for the above-mentioned opening and closing structure, the upper locking ring 305 and the lower locking ring 306 are respectively integrally formed with outwardly protruding lugs 310 at the other free ends away from the sliding post 307. Both lugs 310 have aligned through holes. By passing bolts through the through holes of the two lugs 310 and fastening them with nuts 309, the upper locking ring 305 and the lower locking ring 306 can be firmly closed and locked on the locking rail 304 of the wheel axle 303. The entire structure can be locked and unlocked by simply turning a nut 309.

[0035] Working principle: When the entire walking component needs to be overhauled or replaced, its modular quick disassembly and assembly process is activated. The operator first uses a tool to loosen and remove the locking nut 212, releasing the lock on the rotating bolt 211. Then, the reinforcing plate 207 can rotate downward around the rotating shaft 206, freeing it from the obstruction and limitation of the locking door 208. Next, by operating the lever 213, the locking door 208 is pushed upward, and the locking door 208 will slide upward along the locking groove 209 inside the support leg 104 to the unlocked position. At this time, the lower end of the locking door 208 no longer forms a jam with the upper surface of the connecting tongue 202. After unscrewing the fixing nut 204 used for basic fastening, all locks on the quick release mechanism 3 are released. The entire walking component, composed of the quick release mechanism 3 and the modular mechanism 2, can be pulled out horizontally from the lower part of the support leg 104 as a complete module along the track, realizing the overall quick separation and maintenance of the walking component.

[0036] When only a single vulnerable track wheel 302 is damaged and needs to be replaced, the quick-release process for a single wheel assembly is even simpler. The operator only needs to use a tool to unscrew the nuts 309 that fasten the two lugs 310. The fastening force of the free ends of the upper locking ring 305 and the lower locking ring 306 is released. At this time, the upper locking ring 305 can be flipped upward and opened with the pivot formed by the sliding post 307 and the sliding groove 308 at the other end as the center. This allows the inner flanges of the upper locking ring 305 and the lower locking ring 306 to completely disengage from the locking rail 304 of the wheel axle 303. After removing the opened locking ring assembly, the axial locking of the wheel axle 303 is completely released. The wheel axle 303, together with the track wheel 302 rotatably connected to it, can be directly pulled out horizontally from the wheel frame 301 for replacement. This design simplifies the most common maintenance work to the action of unscrewing a nut 309, greatly improving maintenance efficiency.

Claims

1. A traveling structure for a bidirectional gantry crane used in a hydropower station, comprising a modular mechanism (2) and a support leg (104), and a quick-release mechanism (3) disposed at the lower end of the support leg (104). The quick-release mechanism (3) includes a wheel frame (301), a splicing column (201) is fixed to the upper end of the wheel frame (301), and a connecting tongue (202) is connected to the upper end of the splicing column (201). The connecting tongue (202) is detachably inserted into the lower part of the support leg (104). Its characteristics are: The support leg (104) has a locking groove (209) inside, and a locking door (208) is slidably connected in the locking groove (209). The locking door (208) has a locking position that can slide to engage with the connecting tongue (202). A reinforcing plate (207) is rotatably connected to the support leg (104). The reinforcing plate (207) has a reinforcing position that can rotate to cover the locking door (208). A rotating bolt (211) is fixed on the reinforcing plate (207). A locking plate (210) is fixed on the support leg (104). When the reinforcing plate (207) is in the reinforcing position, the rotating bolt (211) passes through the locking plate (210) and is locked by the locking nut (212).

2. The traveling structure of a bidirectional gantry crane for a hydropower station according to claim 1, characterized in that, The reinforcing plate (207) is rotatably connected to the support leg (104) via a connecting ear (205) and a rotating shaft (206).

3. The traveling structure of a bidirectional gantry crane for a hydropower station according to claim 1, characterized in that, A connecting bolt (203) is fixed on the connecting tongue (202). The connecting bolt (203) passes through the corresponding hole of the support leg (104) and is threadedly connected to the fixing nut (204).

4. The traveling structure of a bidirectional gantry crane for a hydropower station according to claim 1, characterized in that, A lever (213) is fixedly connected to the locking door (208).

5. The traveling structure of a bidirectional gantry crane for a hydropower station according to claim 1, characterized in that, The quick-release mechanism (3) has a wheel axle (303) detachably mounted on the wheel frame (301), and a track wheel (302) is rotatably connected to the wheel axle (303); the outer periphery of the end of the wheel axle (303) is provided with an annular locking rail (304); the quick-release mechanism (3) includes an upper locking ring (305) and a lower locking ring (306), the upper locking ring (305) and the lower locking ring (306) are combined into a ring and locked in the locking rail (304).

6. The traveling structure of a bidirectional gantry crane for a hydropower station according to claim 5, characterized in that, One end of the upper locking ring (305) is provided with a sliding post (307), and the corresponding end of the lower locking ring (306) is provided with a sliding groove (308). The sliding post (307) and the sliding groove (308) are rotatably engaged.

7. The traveling structure of a bidirectional gantry crane for a hydropower station according to claim 6, characterized in that, The upper locking ring (305) and the lower locking ring (306) are respectively fixed with lugs (310) at the other end away from the sliding post (307), and the two lugs (310) are fastened together by nuts (309).

8. The traveling structure of a bidirectional gantry crane for a hydropower station according to claim 1, characterized in that, The support leg (104) is fixed to both ends of the support plate (102), and the support leg (104) and the support plate (102) together constitute the support mechanism (1).

9. The traveling structure of a bidirectional gantry crane for a hydropower station according to claim 8, characterized in that, The upper part of the support plate (102) is fixed with a crane room (101) and an operating room (103), and a crane mechanism (105) is connected inside the crane room (101).

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