Conveniently adjustable gas turbine hand cranking

Abstract

This utility model discloses a conveniently adjustable manual cranking mechanism for a gas turbine, including a manual cranking mechanism with a cranking gear and a drive shaft. A linkage shaft is movably sleeved on the drive shaft, and an assist mechanism is connected to the linkage shaft. A protective frame is installed on one side of the manual cranking mechanism, and one end of both the drive shaft and the linkage shaft is located within the protective frame. In this utility model, rotating the assist handle can drive the manual cranking mechanism through the cooperation of the linkage shaft and the drive shaft. After use, the limiting plate can be released from the annular limiting groove by pulling the sliding frame, thus releasing the restriction on the linkage shaft. Then, pulling the assist handle can disengage the linkage shaft from the locking groove on the drive shaft, allowing the assist handle to be removed. This prevents accidental operation of the manual cranking mechanism due to accidental activation of the assist handle when not in operation. Furthermore, as a high-frequency stressed component, the assist handle can be easily inspected, repaired, or replaced after disassembly.

Description

Technical Field

[0001] This utility model relates to the field of turning gear equipment technology, specifically a manual turning gear for a gas turbine that is easy to adjust. Background Technology

[0002] The manual turning gear for gas turbines is a specialized device used to slowly rotate the rotor (compressor rotor, turbine rotor, and other core rotating components) by manual operation during gas turbine shutdown maintenance, pre-start inspection, and long-term storage. Its core function is to ensure rotor safety and assist in precise maintenance, making it a key auxiliary tool in the gas turbine operation and maintenance system.

[0003] Chinese Patent Publication No. CN221525051U discloses a manual turning device, including a turning motor, turning teeth sleeved on the rotating end of the turning motor, a connecting shaft connected to the other end of the turning motor, a fixed sleeve sleeved on the connecting shaft, a manual crank sleeved on the fixed sleeve, a fixed block mounted on one side of the turning motor, a moving rod horizontally slidably connected to the middle of the fixed block, a stop block connected to one end of the moving rod, two springs connected between the stop block and the fixed block on both sides, and a rectangular frame connected to the other end of the moving rod, with a protective sleeve mounted on one side of the rectangular frame. During turning, rotating the manual crank drives the fixed sleeve to rotate the rotating end of the turning motor via the connecting shaft, thereby adjusting and quickly disengaging the turning teeth. The device allows for manual turning without needing to turn on the turning motor, saving electricity and facilitating adjustment, thus increasing production efficiency.

[0004] In the aforementioned prior art, rotating the manual crank can drive the connecting shaft to rotate, which in turn drives the rotating end of the trolley motor to rotate, thereby adjusting the meshing of the trolley teeth for manual trolley operation. However, the crank and the connecting shaft of this device are always in a fixed state. In the non-working state, the crank may be accidentally rotated due to accidental contact, vibration, or other reasons, causing the equipment to shift. Furthermore, the connection between the trolley motor and the connecting shaft is always exposed, and hard particles such as iron filings, sand, and welding slag in the industrial environment will increase wear when they fall into the connection.

[0005] Therefore, it is necessary to propose a convenient manual turning mechanism for gas turbines to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0006] The purpose of this invention is to provide a conveniently adjustable manual cranking mechanism for gas turbines, which solves the problems mentioned in the background art, where the crank handle and connecting shaft of the manual cranking equipment are always in a fixed state, and the crank handle may be accidentally rotated due to accidental contact, vibration, etc., and the connection of the connecting shaft is always exposed, which increases wear due to hard particles falling into the connection in the industrial environment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a conveniently adjustable manual cranking mechanism for a gas turbine, comprising a manual cranking mechanism, wherein a cranking gear and a drive shaft are provided on the manual cranking mechanism; a linkage sleeve is movably sleeved on the drive shaft, and an assist structure is connected to the linkage sleeve; a protective frame is installed on one side of the manual cranking mechanism, and one end of both the drive shaft and the linkage sleeve is located within the protective frame; a limit structure is connected to the protective frame, and four sliders are connected to the limit structure; a sealing structure is connected to the four sliders.

[0008] Preferably, the assist structure includes an assist handle, which is fixedly sleeved on one end of the linkage shaft. Two locking grooves are symmetrically opened on the linkage shaft, and a locking block is movably installed in each of the two locking grooves. The two locking blocks are symmetrically installed on the outer surface of the drive shaft.

[0009] Preferably, the limiting structure includes two limiting plates, both of which are slidably installed on one side of the protective frame. Both limiting plates are provided with arc-shaped slots, and the linkage sleeve shaft is provided with an annular limiting groove. The limiting plates are engaged with the inside of the annular limiting groove through the arc-shaped slots.

[0010] Preferably, two mounting plates are symmetrically installed on the protective frame, and a guide rod is installed between the two mounting plates. A sliding frame is slidably sleeved on the guide rod and slidably sleeved on the protective frame. Two connecting rods are symmetrically and rotatably installed on one side of the sliding frame, and one end of the two connecting rods is rotatably installed on one side of the two limiting plates respectively.

[0011] Preferably, one end of the spring is installed on one side of the connecting rod, and the other end of the spring is installed on the corresponding mounting plate, with the spring slidably sleeved on the guide rod.

[0012] Preferably, two T-shaped grooves are symmetrically provided on one side of the limiting plate, and T-shaped blocks are slidably installed in each of the two T-shaped grooves. The two T-shaped blocks are symmetrically installed on one side of the protective frame.

[0013] Preferably, the sealing structure includes two sealing plates, four sliders are symmetrically installed on both sides of the two sealing plates, the two sealing plates are slidably installed inside the two limiting plates, and one end of each of the four sliders is installed on one end of the four springs, and the other end of each of the four springs is symmetrically installed on the inner wall of the two limiting plates.

[0014] Preferably, a limiting rod is slidably installed inside the slider, the limiting rod is installed on the inner wall of the limiting plate, and the spring is slidably sleeved on the limiting rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) In this utility model, by rotating the power assist handle, the manual turning can be driven by the cooperation of the linkage sleeve shaft and the drive shaft, thereby controlling the rotation of the turning gear and performing the turning operation. After use, the limit plate can be released from the annular limit groove by pulling the slide frame. At this time, the restriction on the linkage sleeve shaft can be released. Then, by pulling the power assist handle, the linkage sleeve shaft and the snap-fit ​​groove can be disengaged from the drive shaft, which can remove the power assist handle. This avoids accidental operation of the manual turning when the power assist handle is accidentally touched in the non-working state. Moreover, as a high-frequency force-bearing component, the power assist handle can be easily inspected, repaired or replaced after disassembly, and the power assist handle can be disassembled and adjusted according to the usage requirements.

[0017] (2) During the process of pulling out the linkage sleeve shaft, the two springs on both sides will push the two sealing plates closer to each other and seal the arc-shaped slot. Then the slide frame can be released. At this time, under the elastic force of the spring, the slide frame will be reset, thereby resetting the two limit plates and bringing them closer to each other, causing the two sealing plates to merge, and then wrapping the drive shaft in the protective frame to prevent hard particles such as iron filings, sand, and welding slag in the industrial environment from falling into the connection between the drive shaft and the manual turning wheel, thus reducing wear. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the exploded structure of the linkage sleeve shaft of this utility model;

[0020] Figure 3 This is a schematic diagram of the limiting plate structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the protective frame of this utility model;

[0022] Figure 5 This is a schematic diagram of the T-shaped block structure of this utility model;

[0023] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0024] Explanation of icon numbers:

[0025] 100. Manual cranking; 101. Cranking gear; 102. Drive shaft; 200. Linkage sleeve shaft; 201. Power steering handle; 202. Snap-fit ​​groove; 203. Snap-fit ​​block; 300. Protective frame; 301. Limiting plate; 302. Arc-shaped snap-fit ​​groove; 303. Mounting plate; 304. Guide rod; 305. Sliding frame; 306. Connecting rod; 307. Spring one; 308. T-shaped slide groove; 309. T-shaped block; 310. Annular limiting groove; 400. Limiting rod; 401. Slider; 402. Sealing plate; 403. Spring two. Detailed Implementation

[0026] 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.

[0027] Example 1: Please refer to Figure 1-5 This utility model provides a technical solution: a conveniently adjustable manual cranking mechanism for a gas turbine, including a manual cranking mechanism 100, on which a cranking gear 101 and a drive shaft 102 are provided; a linkage shaft 200 is movably sleeved on the drive shaft 102, and an assist structure is connected to the linkage shaft 200. The assist structure is used to facilitate the rotation of the drive shaft 102 to control the operation of the cranking gear 101. A protective frame 300 is installed on one side of the manual cranking mechanism 100, and one end of the drive shaft 102 and the linkage shaft 200 are both located inside the protective frame 300. A limit structure is connected to the protective frame 300, which is used to facilitate the disassembly and installation of the assist structure. Four sliders 401 are connected to the limit structure, and a sealing structure is connected to the four sliders 401. The sealing structure is used to seal the protective frame 300 after the assist structure has been disassembled.

[0028] Furthermore, the power assist structure includes a power assist handle 201, which is fixedly sleeved on one end of the linkage shaft 200. Two locking slots 202 are symmetrically opened on the linkage shaft 200, and locking blocks 203 are movably installed in each of the two locking slots 202. The two locking blocks 203 are symmetrically installed on the outer surface of the drive shaft 102. Rotating the power assist handle 201 can drive the linkage shaft 200 to rotate. The linkage shaft 200 can drive the drive shaft 102 to rotate through the sleeve of the locking slots 202 and the locking blocks 203.

[0029] Furthermore, the limiting structure includes two limiting plates 301, both of which are slidably installed on one side of the protective frame 300. Both limiting plates 301 are provided with arc-shaped slots 302, and the linkage sleeve shaft 200 is provided with an annular limiting groove 310. The limiting plates 301 are engaged with the inside of the annular limiting groove 310 through the arc-shaped slots 302. When the linkage sleeve shaft 200 rotates, it can drive the annular limiting groove 310 to rotate at the arc-shaped slots 302. The setting of the limiting plates 301 can prevent the linkage sleeve shaft 200 from loosening.

[0030] Furthermore, two mounting plates 303 are symmetrically installed on the protective frame 300, and a guide rod 304 is installed between the two mounting plates 303. A sliding frame 305 is slidably sleeved on the guide rod 304 and slidably sleeved on the protective frame 300. Two connecting rods 306 are symmetrically and rotatably installed on one side of the sliding frame 305. One end of the two connecting rods 306 is rotatably installed on one side of the two limiting plates 301 respectively. Pulling the sliding frame 305 can drive one end of the two connecting rods 306 to move, so that the other end of the two connecting rods 306 pushes the two limiting plates 301 to move and unfold in a direction away from each other. The moving limiting plates 301 can drive the arc-shaped slot 302 to slowly disengage from the annular limiting groove 310 so as to remove the linkage sleeve shaft 200.

[0031] Furthermore, one end of spring 307 is installed on one side of connecting rod 306, and the other end of spring 307 is installed on the corresponding mounting plate 303. Spring 307 is slidably sleeved on guide rod 304. When slide frame 305 moves, it will compress spring 307. When slide frame 305 is released, it will be pushed back to its original position by the elastic force of spring 307.

[0032] Furthermore, two T-shaped slide grooves 308 are symmetrically opened on one side of the limiting plate 301. T-shaped blocks 309 are slidably installed in both T-shaped slide grooves 308. The two T-shaped blocks 309 are symmetrically installed on one side of the protective frame 300. When the limiting plate 301 moves, it can slide on the T-shaped blocks 309 through the T-shaped slide grooves 308. The movement direction of the limiting plate 301 can be restricted by the setting of the T-shaped slide grooves 308 and the T-shaped blocks 309.

[0033] Example 2: As Figure 3-4 To minimize the impact of external dust and impurities on the drive shaft 102 after disassembling the linkage sleeve 200, a sealing structure is installed. This sealing structure includes two sealing plates 402 and four sliders 401 symmetrically mounted on both sides of the two sealing plates 402. The two sealing plates 402 are slidably mounted inside the two limiting plates 301. Four springs 403 are mounted on one end of each of the four sliders 401, and the other ends of the springs 403 are symmetrically mounted on the inner walls of the two limiting plates 301. Limit rods 400 are slidably mounted inside the sliders 401. Position rod 400 is installed on the inner wall of limit plate 301. Spring 2 403 is slidably sleeved on limit rod 400. During the process of removing linkage sleeve shaft 200, the compressed spring 2 403 on both sides will push the corresponding slider 401 and sealing plate 402 to move in the direction of linkage sleeve shaft 200. Then, release slide frame 305 to move and reset the two limit plates 301. The two limit plates 301 drive the two sealing plates 402 to approach and merge, wrapping the drive shaft 102 in protective frame 300 to prevent the drive shaft 102 from being affected by external impurities. The remaining features are the same as in embodiment 1.

[0034] The working principle is as follows: Rotating the power assist handle 201 drives the linkage shaft 200 to rotate. The linkage shaft 200, through the engagement of the locking slot 202 and the locking block 203, drives the drive shaft 102 to rotate, thereby driving the manual chuck 100 and controlling the chuck gear 101 to rotate. When the power assist handle 201 needs to be pulled out after operation, please refer to... Figure 3 and Figure 4 In this state, spring 403 is compressed and stored. First, pull the sliding frame 305 to make it slide on the protective frame 300 and the guide rod 304. As the sliding frame 305 moves, it compresses spring 307 and drives one end of the two connecting rods 306 to move. This causes the other end of the two connecting rods 306 to push the two limiting plates 301 to move away from each other and unfold. The continuously moving limiting plates 301 can drive the arc-shaped slot 302 to slowly disengage from the annular limiting slot 310. During this process, the compressed springs 403 on both sides will push the corresponding sliders 401 and the sealing plate 402 to move towards the linkage shaft 200. When the slider 401 moves, it can slide on the limiting rod 400. The setting of the limiting rod 400 can prevent the slider 401 from loosening and at the same time prevent spring 403 from being released. When 403 bends, and then the limiting plate 301 completely disengages from the annular limiting groove 310, the restriction on the linkage sleeve shaft 200 can be released. Pulling the assist handle 201 can cause the linkage sleeve shaft 200 to be released from the drive shaft 102. At this time, the second spring 403 will also push the slider 401 and the sealing plate 402 to the end. Then, the slide frame 305 is released, and under the elastic force of the first spring 307, the slide frame 305 will be pushed to reset. The slide frame 305 will then pull the two limiting plates 301 to move and reset through the two connecting rods 306, so that the two limiting plates 301 drive the two sealing plates 402 to approach and merge. The sealing plates 402 are used to seal the arc-shaped slot 302 and wrap the drive shaft 102 in the protective frame 300 to prevent the drive shaft 102 from being affected by external impurities.

[0035] When installing the power assist handle 201, first pull the slide frame 305 to control the two limit plates 301 to unfold, so that the two limit plates 301 drive the two sealing plates 402 to unfold, so that the space between the two sealing plates 402 is sufficient for the linkage sleeve shaft 200 to pass through. Then, re-fit the linkage sleeve shaft 200 and the snap-fit ​​groove 202 onto the drive shaft 102 and the snap block 203. After that, release the slide frame 305 to merge the limit plates 301 on both sides. During the process, the sealing plates 402 will come into contact with the surface of the linkage sleeve shaft 200. The merged limit plates 301 can be re-fitted into the annular limit groove 310 through the arc-shaped snap-fit ​​groove 302, thereby restricting the position of the linkage sleeve shaft 200 and preventing the linkage sleeve shaft 200 from coming off the drive shaft 102. This makes it convenient to disassemble and adjust the power assist handle 201 according to usage requirements.

[0036] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A gas turbine hand scotch yoke with easy adjustment, comprising a hand scotch yoke (100), the hand scotch yoke (100) is provided with a scotch yoke gear (101) and a driving shaft (102); characterized in that: A linkage sleeve (200) is movably sleeved on the drive shaft (102). An assist structure is connected to the linkage sleeve (200). A protective frame (300) is installed on one side of the manual cranking (100). One end of the drive shaft (102) and the linkage sleeve (200) are both located inside the protective frame (300). A limit structure is connected to the protective frame (300). Four sliders (401) are connected to the limit structure. A sealing structure is connected to the four sliders (401).

2. The easily adjustable manual cranking mechanism for a gas turbine according to claim 1, characterized in that: The assist structure includes an assist handle (201), which is fixedly sleeved on one end of the linkage shaft (200). Two snap-fit ​​grooves (202) are symmetrically opened on the linkage shaft (200), and two snap-fit ​​blocks (203) are movably installed in each of the two snap-fit ​​grooves (202). The two snap-fit ​​blocks (203) are symmetrically installed on the outer surface of the drive shaft (102).

3. The easily adjustable manual cranking mechanism for a gas turbine according to claim 1, characterized in that: The limiting structure includes two limiting plates (301), both of which are slidably installed on one side of the protective frame (300). Both limiting plates (301) are provided with arc-shaped slots (302), and the linkage sleeve shaft (200) is provided with an annular limiting groove (310). The limiting plates (301) are engaged with the inside of the annular limiting groove (310) through the arc-shaped slots (302).

4. The easily adjustable manual cranking mechanism for a gas turbine according to claim 1, characterized in that: Two mounting plates (303) are symmetrically installed on the protective frame (300). A guide rod (304) is installed between the two mounting plates (303). A sliding frame (305) is slidably sleeved on the guide rod (304). The sliding frame (305) is slidably sleeved on the protective frame (300). Two connecting rods (306) are symmetrically and rotatably installed on one side of the sliding frame (305). One end of the two connecting rods (306) is rotatably installed on one side of the two limiting plates (301).

5. A conveniently adjustable manual cranking mechanism for a gas turbine according to claim 4, characterized in that: One end of a spring (307) is installed on one side of the connecting rod (306), and the other end of the spring (307) is installed on the corresponding mounting plate (303). The spring (307) is slidably sleeved on the guide rod (304).

6. A conveniently adjustable manual cranking mechanism for a gas turbine according to claim 3, characterized in that: Two T-shaped grooves (308) are symmetrically opened on one side of the limiting plate (301), and T-shaped blocks (309) are slidably installed in both T-shaped grooves (308). The two T-shaped blocks (309) are symmetrically installed on one side of the protective frame (300).

7. A conveniently adjustable manual cranking mechanism for a gas turbine according to claim 1, characterized in that: The sealing structure includes two sealing plates (402), four sliders (401) are symmetrically installed on both sides of the two sealing plates (402), the two sealing plates (402) are slidably installed inside the two limiting plates (301), and one end of four springs (403) is installed on each of the four sliders (401), and the other end of the four springs (403) is symmetrically installed on the inner wall of the two limiting plates (301).

8. A conveniently adjustable manual cranking mechanism for a gas turbine according to claim 7, characterized in that: A limiting rod (400) is slidably installed inside the slider (401). The limiting rod (400) is installed on the inner wall of the limiting plate (301), and the second spring (403) is slidably sleeved on the limiting rod (400).

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