Protective protector for port of central rotating shaft

Abstract

The utility model relates to the technical field of rotating shaft machining, and provides a central rotating shaft port protection protector which comprises a rotating shaft, a central hole is formed in one end of the rotating shaft, a mounting groove is formed in the outer side wall of a mounting block, an air bag is arranged in the mounting groove, and a guide pipe is fixedly connected to the side, away from the central hole, of a sealing cover. The catheter is provided with an inflation assembly used for inflating the air bag through the catheter, and the catheter is provided with a deflation assembly used for deflating the air bag through the catheter. According to the central rotating shaft port protection protector, the air bag is inflated by the inflation assembly through the guide pipe, so that the air bag is expanded, the central hole can be conveniently sealed through the air bag, and then the air bag is deflated by the deflation assembly through the guide pipe, so that the air bag is shrunk; therefore, the air bag can be conveniently taken out from the center hole, and the problems that in the related technology, the sealing measure for the center hole is too inconvenient, and the sealing requirement for center holes with different hole diameters is not met are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating shaft processing, and in particular to a central rotating shaft port protective protector. Background Art

[0002] As a core component of a turbine generator, the quality of the turbine shaft plays a crucial role in the safe, stable, and efficient operation of the unit. Improper placement of the turbine shaft center hole after fine machining often leads to corrosion. Due to the deep center hole of the turbine shaft, corrosion leads to high cleaning costs and a long cleaning cycle, and sometimes incomplete cleaning. If the center hole of a turbine shaft is corroded, this area becomes a source of failure, posing a significant safety hazard to the unit. Shaft failure can result in significant economic losses and serious accidents.

[0003] After searching, an existing patent (Announcement No.: CN214499171U) discloses a rotating shaft center hole protection device, including a sealing ring, a sealing cover, a monitoring instrument, a vacuum pump A, a control valve, a vacuum pump B, a vacuum device, a connecting wire, and a controller. One side of the sealing ring is installed on the end face of the center hole machined on the rotating shaft, the sealing cover contacts the other side of the sealing ring, the vacuum pump A is connected to the sealing cover, the monitoring instrument is connected to the front end of the vacuum pump A, the control valve is connected to the rear end of the vacuum pump A, the vacuum pump B is connected to the vacuum pump A, the vacuum device is connected to the vacuum pump B, the connecting wire is connected to the vacuum device, and the controller is connected to the connecting wire. The device has a simple and reasonable structure and is easy to operate. It can protect the finely machined rotating shaft hole from rust or cavitation, and prevent the entry of floating objects such as dust in the storage space, avoid the phenomenon of increased subsequent repair costs and extended repair cycles caused by improper protection, and ensure the safety and stability of the unit.

[0004] However, in the implementation of the relevant technology, the following problems were found: when the above-mentioned device seals the center hole, the vacuum equipment and controller are started, the control valve is opened, and the contact force between the sealing cover and the insulating sealing ring is increased. The controller sets the vacuum degree to 20Pa, and operates the vacuum equipment, vacuum pump A and vacuum pump B until the monitoring instrument reaches the 20Pa requirement set by the controller. Close the control valve, controller and vacuum equipment, and disconnect vacuum pump A and vacuum pump B. The rotating shaft carries the sealing ring, sealing cover, monitoring instrument, vacuum pump A and control valve for storage. The steps of the sealing measures for the center hole of the above-mentioned device are too cumbersome, and the insulating sealing ring will be in too close contact with the inner wall of the center hole, making it difficult to remove. In addition, an insulating sealing ring of one diameter can only be applied to a center hole of one aperture, and is therefore not suitable for sealing center holes of different apertures. Utility Model Content

[0005] The utility model provides a central shaft port protection protector, which solves the problems in the related art that the sealing measures for the central hole are too inconvenient and not suitable for the sealing requirements of central holes with different apertures.

[0006] The technical solution of the present utility model is as follows: A center shaft port protective protector comprises a shaft, a center hole is provided at one end of the shaft, a sealing cover is provided on one side of the center hole port, a connecting column is fixedly connected to the sealing cover near the side of the center hole, one end of the connecting column extends into the center hole and is fixedly connected to a mounting block, a mounting groove is provided on the outer wall of the mounting block, an airbag is provided in the mounting groove, the sealing cover is fixedly connected to a catheter on the side away from the center hole, and one end of the catheter passes through the connecting column and the mounting block and is connected to the airbag, an inflation component for inflating the airbag through the catheter is provided on the catheter, and a deflation component for deflation of the airbag through the catheter is provided on the catheter.

[0007] Preferably, the mounting groove is an annular groove, and the outer surface of the airbag is bonded to the inner wall of the mounting groove.

[0008] Preferably, both ends of the outer side wall of the mounting block are fixedly connected with support plates, and the two support plates are both annular arc structures, and the two support plates are arranged opposite to each other.

[0009] Preferably, the inflation component includes an inflation tube, the inflation tube is fixedly connected to the guide tube, a first valve is provided on the inflation tube, and one end of the inflation tube is connected to an air supply tube.

[0010] Preferably, the air supply pipe is a retractable hose, and one end of the air supply pipe is externally connected to an air pump.

[0011] Preferably, the deflation assembly includes a deflation pipe, the deflation pipe is fixedly connected to the conduit, and a second valve is provided on the deflation pipe.

[0012] Preferably, a plurality of fastening mechanisms are arranged at equal intervals in a circular distribution on the edge of the sealing cover close to one side of the center hole, and the fastening mechanism includes a connecting plate, the connecting plate is fixedly connected to one side of the sealing cover, a threaded sleeve is fixedly connected to the inner wall of the connecting plate, a threaded rod is connected to the inner thread of the threaded sleeve, a knob is fixedly connected to one end of the threaded rod, and an extrusion block is provided at the other end of the threaded rod.

[0013] Preferably, the extrusion block is a circular structure, and the extrusion block is rotationally connected to the other end of the threaded rod.

[0014] The working principle and beneficial effects of the utility model are as follows:

[0015] In the present invention, the airbag is inflated through the catheter by the inflation component to expand the airbag, which can make the outer surface of the airbag fit tightly with the inner wall of the center hole, so that the center hole can be conveniently sealed by the airbag, and then the airbag is deflated through the catheter by the deflation component to shrink the airbag, which can make the outer surface of the airbag separate from the inner wall of the center hole, so that the airbag can be conveniently taken out of the center hole. Moreover, the present design only needs to continuously expand the airbag until it fits tightly with the inner wall of the center hole to achieve the sealing of the center hole, so that it can be suitable for the sealing requirements of center holes with different apertures, solving the problem that the sealing measures for the center hole in the related art are too inconvenient and not suitable for the sealing requirements of center holes with different apertures. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 This is a schematic diagram of the external structure of a central shaft port protection protector proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a central shaft port protection protector proposed by the utility model;

[0019] Figure 3 This is a schematic structural diagram of the inflation component and deflation component of the central shaft port protection protector proposed by the present invention;

[0020] Figure 4 This is a schematic diagram of the disassembled structure of the mounting block, mounting slot, airbag and support plate of the central shaft port protection protector proposed by the present invention;

[0021] Figure 5 This is a structural cross-sectional view of a central shaft port protection protector proposed by the utility model;

[0022] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part A;

[0023] In the figure: 1. rotating shaft; 2. center hole; 3. sealing cover; 4. connecting column; 5. mounting block; 6. mounting groove; 7. air bag; 8. support plate; 9. catheter; 10. inflation tube; 11. first valve; 12. air supply tube; 13. deflation tube; 14. second valve; 15. fastening mechanism; 151. connecting plate; 152. threaded sleeve; 153. threaded rod; 154. knob; 155. extrusion block. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] See also Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 6 The utility model provides a technical solution: a central shaft port protective protector, comprising a shaft 1, a central hole 2 is provided at one end of the shaft 1, a sealing cover 3 is provided on one side of the port of the central hole 2, a connecting column 4 is fixedly connected to the sealing cover 3 near the central hole 2, one end of the connecting column 4 extends into the central hole 2 and is fixedly connected to a mounting block 5, a mounting groove 6 is provided on the outer wall of the mounting block 5, an airbag 7 is provided in the mounting groove 6, the mounting groove 6 is an annular groove, and the outer surface of the airbag 7 is bonded to the inner wall of the mounting groove 6, a catheter 9 is fixedly connected to the side of the sealing cover 3 away from the central hole 2, and one end of the catheter 9 passes through the connecting column 4 and the mounting block 5 and is connected to the airbag 7, an inflation component for inflating the airbag 7 through the catheter 9 is provided on the catheter 9, and a deflation component for deflation of the airbag 7 through the catheter 9 is provided on the catheter 9.

[0026] Support plates 8 are fixedly connected to both ends of the outer side wall of the mounting block 5 , and both support plates 8 are annular arc structures and are arranged opposite to each other.

[0027] When in use, first, the initial state of the airbag 7 is contracted, and the connecting column 4, the mounting block 5 and the airbag 7 are placed into the center hole 2, so that the sealing cover 3 is attached to the port of the center hole 2, and then the airbag 7 is inflated through the inflation assembly through the conduit 9, so that the airbag 7 expands until the outer surface of the airbag 7 is tightly pressed against the inner wall of the center hole 2. At this time, the airbag 7 will seal the center hole 2, which can prevent the center hole 2 from rusting and prevent the entry of floating objects such as dust in the outside air; wherein, when the airbag 7 is inflated, the two supports The plate 8 can support the inflated airbag 7 from both sides, thereby improving the stability of the airbag 7, thereby improving the sealing effect of the airbag 7 on the center hole 2; when the airbag 7 needs to be removed, the airbag 7 is deflated through the deflation component through the catheter 9, the airbag 7 will shrink, and the outer surface of the airbag 7 will be separated from the inner wall of the center hole 2. At this time, the airbag 7 can be directly and conveniently removed; in addition, when it is necessary to seal the center holes 2 with different apertures, it is only necessary to allow the airbag 7 to continue to expand until it is tightly fitted with the inner wall of the center hole 2 to achieve sealing of the center hole 2.

[0028] Therefore, the airbag 7 is expanded by inflating the airbag 7 through the catheter 9 by the inflation component, so that the outer surface of the airbag 7 can fit tightly with the inner wall of the center hole 2, so that the center hole 2 can be conveniently sealed by the airbag 7, and then the airbag 7 is deflated through the catheter 9 by the deflation component to shrink the airbag 7, so that the outer surface of the airbag 7 can be separated from the inner wall of the center hole 2, so that the airbag 7 can be conveniently taken out of the center hole 2. Moreover, the present design only needs to make the airbag 7 continue to expand until it fits tightly with the inner wall of the center hole 2 to achieve the sealing of the center hole 2, so that it can be suitable for the sealing requirements of center holes 2 with different apertures, solving the problem that the sealing measures for the center hole 2 in the related art are too inconvenient and not suitable for the sealing requirements of center holes 2 with different apertures.

[0029] See Figure 3 、 Figure 4 and Figure 6 The inflation component includes an inflation tube 10, which is fixedly connected to the guide tube 9. A first valve 11 is provided on the inflation tube 10. One end of the inflation tube 10 is connected to an air supply tube 12. The air supply tube 12 is a retractable hose, and one end of the air supply tube 12 is externally connected to an air pump.

[0030] When inflating the airbag 7, open the first valve 11, close the deflation assembly, start the inflation pump, and deliver air to the catheter 9 through the air supply pipe 12 and the inflation pipe 10. The catheter 9 then delivers the air to the airbag 7, causing the airbag 7 to expand.

[0031] See Figure 3 、 Figure 4 and Figure 6 The deflation component includes a deflation pipe 13, which is fixedly connected to the conduit 9 and is provided with a second valve 14.

[0032] When the airbag 7 is deflated, the second valve 14 is opened and the inflation assembly is closed. The air in the airbag 7 is discharged outward through the conduit 9 and the deflation tube 13, thereby causing the airbag 7 to shrink.

[0033] See Figure 1 and Figure 2 , a number of fastening mechanisms 15 are arranged in a circular distribution at equal intervals on the edge of the sealing cover 3 near the center hole 2. The fastening mechanism 15 includes a connecting plate 151, which is fixedly connected to one side of the sealing cover 3. A threaded sleeve 152 is fixedly connected to the inner wall of the connecting plate 151. A threaded rod 153 is connected to the inner thread of the threaded sleeve 152. A knob 154 is fixedly connected to one end of the threaded rod 153. An extrusion block 155 is provided at the other end of the threaded rod 153. The extrusion block 155 is a circular structure, and the extrusion block 155 and the other end of the threaded rod 153 are rotatably connected.

[0034] When the airbag 7 is inflated and the center hole 2 is sealed, the sealing cover 3 is tightly attached to the end of the center hole 2. At this time, the staff manually turns the knob 154, and the knob 154 drives the threaded rod 153 to rotate inward. The threaded rod 153 drives the extrusion block 155 to move inward until the extrusion block 155 tightly presses the outer wall of the rotating shaft 1, thereby tightening the sealing cover 3, which can improve the stability when sealing the center hole 2 and is beneficial to improving the sealing effect of the center hole 2.

[0035] The working principle and use process of the present invention are as follows: when in use, first, the initial state of the airbag 7 is contracted, the connecting column 4, the mounting block 5 and the airbag 7 are placed into the center hole 2, so that the sealing cover 3 is attached to the port of the center hole 2, then, the first valve 11 is opened, the second valve 14 is closed, the inflation pump is started, and air is transported into the conduit 9 through the air supply pipe 12 and the inflation pipe 10, and the conduit 9 then transports the air into the airbag 7, so that the airbag 7 is expanded until the outer surface of the airbag 7 is tightly pressed against the inner wall of the center hole 2. At this time, the airbag 7 will seal the center hole 2, which can prevent the center hole 2 from rusting and prevent the entry of floating objects such as dust in the outside air. ; Among them, when the airbag 7 is inflated, the two support plates 8 can support the inflated airbag 7 from both sides, thereby improving the stability of the airbag 7, thereby improving the sealing effect of the airbag 7 on the center hole 2; when the airbag 7 needs to be taken out, the second valve 14 is opened and the first valve 11 is closed, and the air in the airbag 7 will be discharged outward through the conduit 9 and the deflation tube 13, causing the airbag 7 to shrink, and the outer surface of the airbag 7 will be separated from the inner wall of the center hole 2. At this time, the airbag 7 can be directly and conveniently taken out; in addition, when it is necessary to seal the center holes 2 with different apertures, it is only necessary to allow the airbag 7 to continue to inflate until it is tightly fitted with the inner wall of the center hole 2 to achieve sealing of the center hole 2.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A central shaft port protection protector, comprising a shaft (1), wherein one end of the shaft (1) is provided with a central hole (2), and is characterized in that: A sealing cover (3) is provided on one side of the center hole (2) port, and a connecting column (4) is fixedly connected to the sealing cover (3) on the side close to the center hole (2), one end of the connecting column (4) extends into the center hole (2) and is fixedly connected to a mounting block (5), a mounting groove (6) is provided on the outer wall of the mounting block (5), an airbag (7) is provided in the mounting groove (6), a catheter (9) is fixedly connected to the side of the sealing cover (3) away from the center hole (2), and one end of the catheter (9) passes through the connecting column (4) and the mounting block (5) and is connected to the airbag (7), an inflation component for inflating the airbag (7) through the catheter (9) is provided on the catheter (9), and a deflation component for deflation of the airbag (7) through the catheter (9) is provided on the catheter (9).

2. The central shaft port protection protector according to claim 1, characterized in that: The mounting groove (6) is an annular groove, and the outer surface of the airbag (7) is bonded to the inner wall of the mounting groove (6).

3. The central shaft port protection protector according to claim 1, characterized in that: Support plates (8) are fixedly connected to both ends of the outer side wall of the mounting block (5), and both support plates (8) are annular arc structures, and the two support plates (8) are arranged relative to each other.

4. The central shaft port protection protector according to claim 1, characterized in that: The inflation component comprises an inflation tube (10), the inflation tube (10) is fixedly connected to the guide tube (9), a first valve (11) is provided on the inflation tube (10), and one end of the inflation tube (10) is connected to an air supply tube (12).

5. The central shaft port protection protector according to claim 4, characterized in that: The air supply pipe (12) is a retractable hose, and one end of the air supply pipe (12) is externally connected to an air pump.

6. The central shaft port protection protector according to claim 1, characterized in that: The deflation assembly comprises a deflation pipe (13), the deflation pipe (13) is fixedly connected to the conduit (9), and a second valve (14) is provided on the deflation pipe (13).

7. The central shaft port protection protector according to claim 1, characterized in that: A plurality of fastening mechanisms (15) are arranged at equal intervals in a circular distribution on the edge of one side of the sealing cover (3) close to the central hole (2). The fastening mechanism (15) comprises a connecting plate (151). The connecting plate (151) is fixedly connected to one side of the sealing cover (3). A threaded sleeve (152) is fixedly connected to the inner wall of the connecting plate (151). The threaded sleeve (152) is internally threadedly connected to a threaded rod (153). One end of the threaded rod (153) is fixedly connected to a knob (154). The other end of the threaded rod (153) is provided with an extrusion block (155).

8. The central shaft port protection protector according to claim 7, characterized in that: The extrusion block (155) is a circular structure, and the extrusion block (155) is rotationally connected to the other end of the threaded rod (153).

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