Oil-free locking device of servomotor

Abstract

The utility model provides an oil-free locking device of a servomotor, which belongs to the technical field of water turbines and comprises a servomotor body, a piston rod is arranged in the servomotor body, a positioning column is arranged on the surface of the piston rod, a support frame is arranged above one side wall of the servomotor body, and a locking mechanism for positioning the piston rod is arranged on the upper surface of the support frame. According to the utility model, the internal structure is simpler and more convenient, and internal maintenance is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of water turbines, in particular to an oil-free locking device for a servomotor. Background Art

[0002] The guide vane servomotors of hydro-turbine generator sets are equipped with locking devices, which need to be put into use after the unit is shut down and the guide vanes are fully closed to prevent the guide vanes from opening due to malfunction of the servomotors, thereby ensuring the safety of the hydropower plant equipment and personnel. Before the speed governor is started, the locking device needs to be pulled out so that the guide vanes can be opened smoothly. The internal structure of the existing servomotor locking device is too complicated, making it inconvenient to inspect and repair the inside. Utility Model Content

[0003] In view of this, the utility model provides an oil-free locking device for a servomotor, which can make the internal structure simpler and more convenient for internal maintenance.

[0004] In order to solve the above technical problems, the utility model provides an oil-free locking device for a servomotor, comprising a servomotor body, a piston rod is arranged in the servomotor body, a positioning column is arranged on the surface of the piston rod, a support frame is arranged above one side wall of the servomotor body, and a locking mechanism for positioning the piston rod is arranged on the upper surface of the support frame. When the staff needs to recover the piston rod and lock the piston rod, the piston rod of the servomotor body is recovered to the inside of the servomotor body, and the piston rod drives the positioning column to move synchronously. When the piston rod is recovered, the positioning column is locked by the locking mechanism, and then the piston rod is fixed. The piston rod is fixed by the positioning mechanism, so that the internal structure is simpler and more convenient for internal maintenance.

[0005] The locking mechanism includes a driving frame arranged on the upper surface of the support frame, a partition plate is arranged in the center of the driving frame, springs are arranged on both sides of the lower part of the driving frame, connecting posts are arranged at the ends of the springs and towards one end of the positioning post, a locking post is arranged on one side of the connecting post, a through groove is opened below one side wall of the driving frame and corresponds to the position of the locking post, a locking groove is opened on the surface of the positioning post, the locking post passes through the through groove of the side wall of the driving frame and is plugged into the locking groove, and a driving component for driving the connecting post to move is arranged above the driving frame. Before the piston rod needs to be recovered, the staff first drives the connecting post to move horizontally through the driving component, so that the connecting post enters the driving frame, and the connecting post compresses the spring, and then recovers the piston rod. When the piston rod is recovered, the connecting post is driven to move by the driving component, so that the connecting post drives the locking post to be clamped into the locking groove, so that the locking post locks the positioning post, and then positions the piston rod.

[0006] The cam is provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels, the guide wheels are provided with a plurality of guide wheels, the guide wheels are provided with a plurality of guide wheels, the guide wheels are provided with a plurality of guide wheels, the guide wheels are provided with a plurality of guide wheels, the guide wheels are provided with a plurality of guide wheels, the guide wheels are provided with a plurality of guide wheels, the guide wheels are provided with a plurality of guide wheels, the guide wheels are provided with a plurality of guide wheels, the guide wheels are provided with a plurality of guide wheels,

[0007] Through holes are provided on both sides of the guide column, and guide rods are arranged through the through holes on both sides of the guide column. The cross section of the guide rod is adapted to the cross section of the through hole of the guide column. Both ends of the guide rod are fixed to the inner wall of the driving frame. When the guide column moves, the guide rod slides in the length direction, making the movement process of the guide column more stable.

[0008] A rubber pad is provided on the surface of the locking column to prevent the locking column from being damaged when the device vibrates, thereby increasing the service life of the device.

[0009] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0010] 1. When the utility model is used, when the staff needs to recover the piston rod and lock the piston rod, the piston rod of the relay body is recovered to the inside of the relay body, and the piston rod drives the positioning column to move synchronously. When the piston rod is recovered, the positioning column is locked by the locking mechanism, and then the piston rod is fixed. The piston rod is fixed by the positioning mechanism, which makes the internal structure simpler and more convenient for internal maintenance.

[0011] 2. When the utility model is used, the staff first drives the connecting column to move horizontally through the driving assembly, so that the connecting column enters the driving frame, and at the same time the connecting column compresses the spring, and then retracts the piston rod. After the piston rod is retracted, the connecting column is driven to move by the driving assembly, so that the connecting column drives the locking column to be engaged in the locking groove, so that the locking column locks the positioning column, and then positions the piston rod.

[0012] 3. When the utility model is used, before the piston rod needs to be recovered, the telescopic push rod is started to make the locking column enter the inside of the driving frame, and the connecting column compresses the spring. After the piston rod is completely recovered, the telescopic push rod is started to make the output end of the telescopic push rod recovered, and the output end of the telescopic push rod drives the driving block to rise. Since the upper surface of the guide block is an inclined surface, the spring has a rebound space. The rebound force of the spring pushes the connecting column to drive the locking column to move toward the positioning column, so that the locking column is connected to the locking groove, and then the positioning column and the piston rod are locked, so that the internal structure of the device is simpler and more convenient for internal maintenance.

[0013] 4. When the utility model is used, through holes are opened on both sides of the guide column, and guide rods are arranged through the through holes on both sides of the guide column. The cross section of the guide rod is adapted to the cross section of the through hole of the guide column. Both ends of the guide rod are fixed to the inner wall of the driving frame. When the guide column moves, the guide rod slides in the length direction, so that the movement process of the guide column is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a cross-sectional view of the internal structure of the locking mechanism of the utility model;

[0016] Figure 3 This is a front sectional view of the interior of the locking mechanism of the utility model.

[0017] Explanation of the reference numerals: 100, relay body; 200, piston rod; 300, positioning column; 301, locking groove; 400, support frame; 500, locking mechanism; 501, drive frame; 502, partition plate; 503, guide column; 504, telescopic push rod; 505, drive block; 506, spring; 507, connecting column; 508, connecting block; 509, locking column; 510, guide rod. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the following will be combined with the appended drawings of the embodiment of the utility model. Figure 1-3 , the technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0019] According to one embodiment of the utility model, Figure 1 , Figure 2 and Figure 3As shown: This embodiment provides an oil-free locking device for a servomotor, comprising a servomotor body 100, a piston rod 200 is arranged inside the servomotor body 100, a positioning column 300 is arranged on the surface of the piston rod 200, a support frame 400 is arranged above a side wall of the servomotor body 100, and a locking mechanism 500 for positioning the piston rod 200 is arranged on the upper surface of the support frame 400. When the staff needs to recycle the piston rod 200 and lock the piston rod 200, the piston rod 200 of the servomotor body 100 is recycle into the interior of the servomotor body 100, and the piston rod 200 is locked. The rod 200 drives the positioning column 300 to move synchronously. When the piston rod 200 is recovered, the positioning column 300 is locked by the locking mechanism 500, and then the piston rod 200 is fixed. The piston rod 200 is fixed by the positioning mechanism, which makes the internal structure simpler and more convenient for internal maintenance; the locking mechanism 500 includes a driving frame 501 arranged on the upper surface of the support frame 400, a partition plate 502 is arranged in the center of the driving frame 501, and springs 506 are arranged on both sides of the lower part of the driving frame 501, and the ends of the springs 506 are facing one end of the positioning column 300. A connecting column 507 is provided, and a locking column 509 is provided on one side of the connecting column 507. A through groove is provided below one side wall of the driving frame 501 and corresponds to the position of the locking column 509. A locking groove 301 is provided on the surface of the positioning column 300. The locking column 509 passes through the through groove of the side wall of the driving frame 501 and is inserted in the locking groove 301. A driving component for driving the connecting column 507 to move is provided above the driving frame 501. Before the piston rod 200 needs to be recovered, the staff first drives the connecting column 507 to move horizontally through the driving component so that the connecting column 507 moves away from the piston rod 200. 00, the connecting column 507 drives the locking column to pass through the through slot on the side wall of the driving frame 501 and enter the driving frame 501, and at the same time, the connecting column 507 compresses the spring 506, and then the piston rod 200 is recovered. After the piston rod 200 is recovered, the locking slot 301 on the side wall of the positioning column 300 corresponds to the position of the locking column 509, and then the connecting column 507 is driven to move by the driving assembly, so that the connecting column 507 drives the locking column 509 to be clamped into the locking slot 301, so that the locking column 509 locks the positioning column 300, and then the piston rod 200 is positioned;The driving assembly includes a guide column 503 slidably arranged on the upper part of the driving frame 501, a sliding groove is opened on the surface of the partition plate 502, a connecting block 508 is arranged at the lower end of the guide column 503, the connecting block 508 is slidably arranged in the sliding groove on the surface of the partition plate 502, and the lower end of the connecting block 508 is fixed to the upper surface of the connecting column 507, the upper surface of the guide column 503 is an oblique line, and a telescopic push rod 504 is arranged on one side of the upper surface of the driving frame 501, the output end of the telescopic push rod 504 passes through the upper wall of the driving frame 501, and the telescopic push rod The output end of 504 is provided with a driving block 505, and the driving block 505 is located above the inclined surface of the guide column 503. When it is necessary to retract the piston rod 200, the telescopic push rod 504 is started, and the output end of the telescopic push rod 504 pushes the driving block 505 to descend, and the driving block 505 contacts the inclined surface of the guide column 503, so that when the driving block 505 continues to descend, the guide column 503 is driven to move in a direction away from the piston rod 200, and the guide column 503 drives the connecting column 507 and the locking column 509 to move synchronously, so that the locking column 509 moves forward. The connecting column 507 compresses the spring 506. When the piston rod 200 is completely retracted, the telescopic push rod 504 is started to retract the output end of the telescopic push rod 504. The output end of the telescopic push rod 504 drives the driving block 505 to rise. Since the upper surface of the guide block is an inclined surface, the spring 506 has a rebound space. The rebound force of the spring 506 pushes the connecting column 507 to drive the locking column 509 to move toward the positioning column 300, so that the locking column 509 is engaged in the locking groove 301. , and then the positioning column 300 and the piston rod 200 are locked, so that the internal structure of the device is simpler and more convenient for internal maintenance; through holes are opened on both sides of the guide column 503, and guide rods 510 are arranged through the through holes on both sides of the guide column 503. The cross section of the guide rod 510 is adapted to the cross section of the through hole of the guide column 503. The two ends of the guide rod 510 are fixed to the inner wall of the driving frame 501. When the guide column 503 moves, the guide rod 510 slides in the length direction, so that the movement process of the guide column 503 is more stable;

[0020] According to another embodiment of the present invention, Figure 1 , Figure 2 and Figure 3 As shown, a rubber pad is provided on the surface of the locking column 509, and the rubber pad prevents the locking column 509 from being damaged when the device vibrates, thereby increasing the service life of the device.

[0021] The use of this utility model:

[0022] First of all, it should be made clear here that the relay body 100 and the piston rod 200 are devices in the prior art. Since they are not the innovation points of the present invention, the models are not limited here, nor are their structures described in detail. Only the use method and installation position of the locking mechanism 500 are described in detail. When it is necessary to retract the piston rod 200, the telescopic push rod 504 is started, and the output end of the telescopic push rod 504 pushes the driving block 505 to descend. The driving block 505 contacts the inclined surface of the guide column 503, so that when the driving block 505 continues to descend, the guide column 503 is driven to move in the direction away from the piston rod 200, and the guide column 503 drives the connecting column 507 and the locking column 509 to move synchronously, so that the locking column 509 enters the driving Inside the frame 501, the connecting column 507 compresses the spring 506, and then the relay body 100 is started to retract the piston rod 200 of the relay body 100. When the piston rod 200 is completely retracted, the telescopic push rod 504 is started again to retract the output end of the telescopic push rod 504, and the output end of the telescopic push rod 504 drives the driving block 505 to rise. Since the upper surface of the guide block is an inclined surface, the spring 506 has a rebound space. The rebound force of the spring 506 pushes the connecting column 507 to drive the locking column 509 to move toward the positioning column 300, so that the locking column 509 is engaged in the locking groove 301, and then the positioning column 300 and the piston rod 200 are locked, so that the internal structure of the device is simpler and more convenient for internal maintenance.

[0023] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An oil-free locking device for a servomotor, comprising a servomotor body (100), wherein a piston rod (200) is arranged in the servomotor body (100), characterized in that: A positioning column (300) is arranged on the surface of the piston rod (200), a support frame (400) is arranged above a side wall of the relay body (100), a locking mechanism (500) for positioning the piston rod (200) is arranged on the upper surface of the support frame (400), and the locking mechanism (500) comprises a driving frame (501) arranged on the upper surface of the support frame (400), a partition plate (502) is arranged at the center of the driving frame (501), and springs (506) are arranged on both sides of the lower part of the driving frame (501), and the springs (506) are arranged at the upper surface of the driving frame (501). A connecting column (507) is arranged at one end thereof and facing the positioning column (300), a locking column (509) is arranged on one side of the connecting column (507), a through slot is arranged below one side wall of the driving frame (501) and corresponding to the position of the locking column (509), a locking slot (301) is arranged on the surface of the positioning column (300), the locking column (509) passes through the through slot of the side wall of the driving frame (501) and is inserted into the locking slot (301), and a driving component for driving the connecting column (507) to move horizontally is arranged on the upper part of the driving frame (501).

2. An oil-free locking device for a servomotor according to claim 1, characterized in that: The driving assembly comprises a guide column (503) slidably arranged on the upper part of the driving frame (501); a sliding groove is provided on the surface of the partition plate (502); a connecting block (508) is arranged at the lower end of the guide column (503); the connecting block (508) is slidably arranged in the sliding groove on the surface of the partition plate (502); and the lower end of the connecting block (508) is fixed to the upper surface of the connecting column (507); the upper surface of the guide column (503) is an oblique line; a telescopic push rod (504) is arranged on one side of the upper surface of the driving frame (501); the output end of the telescopic push rod (504) passes through the upper wall of the driving frame (501); and a driving block (505) is arranged at the output end of the telescopic push rod (504); and the driving block (505) is located above the inclined surface of the guide column (503).

3. An oil-free locking device for a servomotor according to claim 2, characterized in that: Through holes are provided on both sides of the guide column (503), and guide rods (510) are provided through the through holes on both sides of the guide column (503), and both ends of the guide rods (510) are fixed to the inner wall of the driving frame (501).

4. An oil-free locking device for a servomotor as claimed in claim 3, characterized in that: A rubber pad is provided on the surface of the locking column (509).

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