A kind of water turbine generator guide bushing clearance measurement is prevented from falling off and is used to lift the tile jack
By setting springs and ball joints at both ends of the stud to prevent the nut from falling off, and by locking it to the handle with a connecting ring, combined with a quick-connect mechanism to achieve rapid extension, the problem of easy nut falling off and inconvenient operation in the hydro-generator guide shaft bearing clearance measuring tool is solved, thus improving operational safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 贾海兵
- Filing Date
- 2025-10-20
- Publication Date
- 2026-07-21
AI Technical Summary
The single-sided nut of the existing hydro-generator guide shaft bearing clearance measuring tool is prone to falling off, resulting in oil contamination and inconvenient operation. Furthermore, extending the tool reduces operating efficiency.
A jack designed to prevent the nut from falling off is constructed by using springs and ball joints in recessed holes at both ends of the stud to prevent the nut from falling off. A connecting ring and quick-connect mechanism are used to lock the handle to the stud. Combined with the quick connection of the extension rod, the problems of nut falling off and inconvenient operation are solved.
It effectively prevents nuts from falling off, avoids oil contamination, improves operational convenience and work efficiency, and enables a rapid increase in measurement distance.
Smart Images
Figure CN224535076U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of jack technology, and in particular to an anti-fall-off top tile jack for measuring the gap of the guide shaft bearing of a hydro generator. Background Technology
[0002] Measuring the clearance of the guide bearings is an essential part of the routine maintenance and repair of hydro-generator units, as its accuracy directly affects the operating condition and service life of the generator set. Existing clearance measuring tools are typically top bearing jacks, which generally have some structural defects. For example, during clearance measurement, some moving parts on the tool, especially the nuts used for adjustment and locking, are prone to loosening or even falling off due to equipment vibration or careless operation. If these nuts fall into the oil pan inside the equipment, they will not only cause oil contamination but also create significant difficulties for subsequent cleaning and may even damage the equipment.
[0003] Furthermore, existing tools also present operational inconveniences. Due to the complex and potentially oily internal environment of the turbine, workers are prone to getting oily when directly holding the stud for measurements, affecting the user experience and work efficiency. When encountering measurement points requiring longer operating distances, traditional tools need to be disassembled or reassembled, and cannot be quickly extended on-site. This undoubtedly adds extra steps and time, reducing overall work efficiency.
[0004] Therefore, this utility model proposes an anti-falling top bearing jack for measuring the gap of the guide shaft bearing of a hydro generator, aiming to solve the problems of easy nut detachment, inconvenient operation, and low efficiency of extension in the existing technology. Utility Model Content
[0005] In view of the problems in the existing technology of a top bearing jack for measuring the guide shaft bearing clearance of a hydro generator, such as the single-sided nut easily falling off and into the oil pan, causing oil pollution, and the inconvenience and low efficiency of lengthening the jack when the measurement distance is insufficient, this utility model aims to provide a top bearing jack for measuring the guide shaft bearing clearance of a hydro generator with an improved structure that can effectively solve the above problems.
[0006] This utility model provides a jack for measuring the gap of the guide shaft bearing of a hydro generator, which is designed to prevent the bearing from falling off. It includes: an oil pan, a guide shaft plate installed in the oil pan, a stud disposed between the oil pan and the guide shaft plate, and a single-sided nut threaded to the outer wall of the stud; as well as an anti-fall-off structure and a quick-connect mechanism.
[0007] The anti-detachment structure includes: recessed holes at both ends of the stud, and a spring and a slider installed in the recessed holes.
[0008] Furthermore, a connecting ring is fixed to the outer wall of the stud, which is used to lock the connecting handle. The handle is detachably connected to an extension rod, which is connected to the handle via a quick-connect mechanism, forming an integrated structure that can be quickly extended and is easy to operate. The sliding ball abuts against the surfaces of the oil pan and the guide shaft plate to prevent the single-sided nut from falling off.
[0009] Preferably, the guide plate is threadedly connected to the inner wall of the oil pan via a connecting bolt, and the position of the connecting bolt is locked by a lock nut.
[0010] Preferably, the outer wall of the connecting ring is provided with multiple screw holes, and the handle is locked to the screw holes by threads, so that the operator does not need to hold the stud.
[0011] Preferably, the quick-connect mechanism includes an extension rod, a first connecting shell, a second connecting shell, a locking block, a locking pin, and a baffle plate. The front side of the extension rod is fixedly connected to the first connecting shell, and the locking pin is connected inside the second connecting shell.
[0012] Furthermore, the locking block has a locking groove in the middle, and the locking pin engages with the inner wall of the locking block through the locking groove to form a stable and quick engagement.
[0013] Preferably, the inner part of the connecting shell is connected to a second spring, which presses the baffle forward, and the baffle is in contact with the rear end of the locking pin.
[0014] In one specific implementation, the baffle plate fits against the rear end of the locking pin to limit its movement, preventing the locking pin from rotating during operation and thus preventing the connecting shell from falling off.
[0015] Preferably, the side of the oil pan and the guide shaft plate adjacent to each other is the position where the two ends of the stud abut against each other, which is used for measurement and jacking.
[0016] Preferably, the oil pan is provided with an oil sealing ring near the working end for sealing purposes.
[0017] This utility model has the following beneficial effects:
[0018] 1. This utility model solves the problem of nuts easily falling into the oil pan and causing pollution in the prior art by opening concave holes at both ends of the stud and installing springs and sliding balls, so that the sliding balls can abut against the surface of the oil pan and guide shaft plate. This avoids oil stains and improves the safety of operation.
[0019] 2. This utility model, by setting a connecting ring and a handle, enables the handle to be locked and connected to the stud, solving the problem of workers having to directly hold the stud for measurement and getting it contaminated with oil, thus improving the convenience of operation.
[0020] 3. This utility model, by setting up a quick-connect mechanism, utilizes the engagement of the locking pin in the locking groove and the limiting of the locking pin by the baffle plate to achieve a quick and stable connection of the extension rod, solving the problems of inconvenience and low efficiency when the measurement distance is insufficient, and improving work efficiency. Attached Figure Description
[0021] Figure 1 This is a front perspective view of a jack for measuring the clearance of the guide shaft bearings of a hydro-generator proposed in this utility model.
[0022] Figure 2 This is a partial structural breakdown diagram of the sealing oil ring of the anti-fall-off top bearing jack for measuring the clearance of the guide shaft bearing of a hydro-generator proposed in this utility model;
[0023] Figure 3 This is a partial structural breakdown diagram of the connecting ring of a jack for measuring the clearance of a guide shaft bearing of a hydro-generator, as proposed in this utility model.
[0024] Figure 4 This is a partial structural breakdown diagram of the locking block of a top bearing jack for measuring the gap of the guide shaft bearing of a hydro-generator proposed in this utility model.
[0025] Legend:
[0026] 1. Oil pan; 2. Quick-connect mechanism; 201. Extension rod; 202. Connecting shell one; 203. Spring two; 204. Baffle; 205. Engaging block; 206. Engaging groove; 207. Locking pin; 208. Connecting shell two; 3. Oil sealing ring; 4. Connecting bolt; 5. Locking nut; 6. Guide shaft plate; 7. Sliding ball; 8. Spring one; 9. Stud; 10. Recessed hole; 11. Connecting ring; 12. Threaded hole; 13. Single-sided nut; 14. Handle. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.
[0028] Example:
[0029] Please refer to Figures 1 to 4 This utility model provides an anti-fall-off top bearing jack for measuring the gap of the guide shaft bearing of a hydro generator, which aims to solve the problems of easy detachment of the single-sided nut 13 of the jack in the prior art, as well as inconvenient operation and low efficiency.
[0030] like Figure 1 and Figure 2 As shown, a jack for measuring the clearance of guide bearings of a hydro-generator includes an oil pan 1 and a guide plate 6 installed in the oil pan 1. The oil pan 1 serves as the mounting base for the entire device, while the guide plate 6 guides the shaft of the hydro-generator.
[0031] To solve the above-mentioned technical problems, the technical solution of this embodiment is that the anti-falling top tile jack for measuring the gap of the guide shaft bearing of the hydro turbine generator also includes a stud 9, and the stud 9 forms a specific structural fit and connection relationship with the aforementioned oil pan 1 and guide shaft plate 6, while the handle 14 and the stud 9 are lockably connected.
[0032] Please refer to Figure 1 The stud 9 is threaded with a single-sided nut 13. The two ends of the stud 9 press against the oil pan 1 and the guide shaft plate 6 on the adjacent side, serving as a measuring and jack function. The two ends of the stud 9 have recessed holes 10. The inner wall of the recessed hole 10 is equipped with a spring 8 and a slider 7. The spring 8 elastically pushes the slider 7 out, so that the two ends of the slider 7 abut against the surface of the oil pan 1 and the guide shaft plate 6, effectively preventing the single-sided nut 13 on the outer wall of the stud 9 from falling off into the oil pan 1 during measurement, thus ensuring operational safety.
[0033] Meanwhile, the outer wall of the stud 9 is fixed with a connecting ring 11. The outer wall of the connecting ring 11 has multiple screw holes 12. The handle 14 is locked to the screw holes 12 by threads. This design allows the handle 14 to be effectively locked to the stud 9. The operator does not need to hold the stud 9 to measure and get oily. The stud 9 makes operation more convenient.
[0034] The quick-connect mechanism 2 is used to quickly connect the handle 14 and the extension rod 201. When the handle 14 is not long enough, the extension rod 201 can be quickly connected. The quick-connect mechanism 2 includes the extension rod 201, connecting shell one 202, connecting shell two 208, locking block 205, locking pin 207, and stop plate 204. The connecting shell one 202 is fixed to the front of the extension rod 201, and the locking pin 207 is connected inside the connecting shell two 208. Please refer to... Figure 4 A locking groove 206 is provided in the middle of the locking block 205, and the locking pin 207 is locked onto the inner wall of the locking block 205 through the locking groove 206. This plug-in locking structure ensures fast and reliable connection.
[0035] In a preferred embodiment, the guide plate 6 is threadedly connected to the inner wall of the oil pan 1 by the connecting bolt 4, and the position of the connecting bolt 4 is locked by the locking nut 5 threaded to the outer wall of the connecting bolt 4, which is used to guide the shaft of the hydro-generator.
[0036] In a preferred embodiment, in order to achieve a stable connection of the extension rod 201, a second spring 203 is connected inside the connecting shell 202 in the quick-connect mechanism 2. The second spring 203 presses the baffle 204 forward, and the baffle 204 fits against the rear end of the locking pin 207.
[0037] In a preferred embodiment, the baffle 204 is fitted to the rear end of the locking pin 207, limiting the locking pin 207 within the locking groove 206. This limiting structure prevents the locking pin 207 from rotating during operation, thereby preventing the connecting shell 208 from falling off and improving work efficiency.
[0038] In a preferred embodiment, the side adjacent to the oil pan 1 and the guide plate 6 is the position where the two ends of the stud 9 abut against each other, which is used for gap measurement and the function of a jack.
[0039] In a preferred embodiment, an oil sealing ring 3 is provided near the working end of the oil basin 1 to seal the internal oil. The oil sealing ring 3 is arranged around the opening of the oil basin 1.
[0040] Working principle: The guide plate 6 installed inside the oil pan 1 and the oil sealing ring 3 is threadedly connected to the inner wall of the oil pan 1 by the connecting bolt 4. The position is locked by the locking nut 5 threaded to the outer wall of the connecting bolt 4, which is used to guide the shaft of the hydro generator. The two ends of the stud 9 press against the adjacent side of the oil pan 1 and the guide plate 6 to act as a measuring and jack. The inner wall of the concave hole 10 opened at both ends of the stud 9 is equipped with a spring 8 and a ball 7. The ball 7 at both ends is effectively connected to the surface of the oil pan 1 and the guide plate 6 to prevent the single-sided nut 13 threaded to the outer wall of the stud 9 from falling out into the oil pan 1. The outer wall of the stud 9 is fixedly connected to the connecting ring 11 with multiple screw holes 12, so that the handle 14 can be effectively locked to the stud 9, so that the operator does not have to hold the stud 9 to measure and get oily. When the handle 14 is not long enough, the extension rod 201 can be quickly connected by the quick-connect mechanism 2.
[0041] When the handle 14 is not long enough and needs to be extended during measurement, the front of the extension rod 201 is fixedly connected to the connecting shell 202. The spring 203 connected inside the connecting shell 202 pushes the baffle 204 forward. The locking pin 207 connected inside the connecting shell 208 is engaged with the inner wall of the locking block 205 through the locking groove 206 opened in the middle of the locking block 205. Then, the baffle 204 adheres to the rear end of the locking pin 207, so that the locking pin 207 is limited in the locking groove 206, preventing the locking pin 207 from rotating and causing the connecting shell 208 to fall off during operation. This eliminates the need to remove the equipment for separate extension, improving work efficiency.
Claims
1. A type of anti-falling top bearing jack for measuring the clearance of guide shaft bearings in a hydro-generator, comprising: An oil pan (1), a guide shaft plate (6) installed in the oil pan (1), a stud (9) disposed between the oil pan (1) and the guide shaft plate (6), and a single-sided nut (13) threaded to the outer wall of the stud (9), characterized in that the stud (9) has recessed holes (10) at both ends, and a spring (8) and a slider (7) are installed in the recessed holes (10), and the slider (7) abuts against the surface of the oil pan (1) and the guide shaft plate (6) to prevent the single-sided nut (13) from falling off; The outer wall of the stud (9) is fixed with a connecting ring (11), which is used to lock the connecting handle (14); The handle (14) is detachably connected to the extension rod (201), which is connected to the handle (14) via a quick-connect mechanism (2).
2. The anti-falling top bearing jack for measuring the clearance of the guide shaft bearing of a hydro-generator according to claim 1, characterized in that, The guide plate (6) is threaded to the inner wall of the oil pan (1) by a connecting bolt (4), and the position of the connecting bolt (4) is locked by a locking nut (5).
3. The anti-falling top bearing jack for measuring the clearance of the guide shaft bearing of a hydro-generator according to claim 1, characterized in that, The outer wall of the connecting ring (11) is provided with a plurality of screw holes (12), and the handle (14) is locked to the screw holes (12) by means of threads.
4. The anti-falling top bearing jack for measuring the clearance of the guide shaft bearing of a hydro-generator according to claim 1, characterized in that, The quick-connect mechanism (2) includes an extension rod (201), a first connecting shell (202), a second connecting shell (208), a locking block (205), a locking pin (207), and a baffle (204). The front side of the extension rod (201) is fixedly connected to the first connecting shell (202), and the second connecting shell (208) is internally connected to the locking pin (207).
5. A jack for measuring the clearance of a hydro-generator guide shaft bearing to prevent detachment of the top bearing, as described in claim 4, is characterized in that... The locking block (205) has a locking groove (206) in the middle, and the locking pin (207) is locked onto the inner wall of the locking block (205) through the locking groove (206).
6. The anti-falling top bearing jack for measuring the clearance of the guide shaft bearing of a hydro-generator according to claim 5, characterized in that, The inner connecting spring 2 (203) of the connecting shell 1 (202) presses the baffle (204) forward, and the baffle (204) is in contact with the rear end of the locking pin (207).
7. A jack for measuring the clearance of a hydro-generator guide shaft bearing to prevent detachment of the top bearing, as described in claim 6, is characterized in that... The baffle (204) fits against the rear end of the locking pin (207) to limit the movement and prevent the locking pin (207) from rotating during operation.
8. The anti-falling top bearing jack for measuring the clearance of the guide shaft bearing of a hydro-generator according to claim 1, characterized in that, The oil pan (1) and the guide plate (6) are adjacent to each other and are used for measurement and jacking.
9. A jack for measuring the clearance of a hydro-generator guide shaft bearing to prevent detachment of the top bearing, as described in claim 1, is characterized in that... The oil pan (1) is provided with an oil sealing ring (3) near the working end.