Lifting device for water conservancy pump station unit maintenance

Abstract

The invention relates to the technical field of pump station unit maintenance, in particular to a lifting device for water conservancy pump station unit maintenance, which comprises a pump station main body, a coupling assembly, a dredging assembly, a plugging assembly, a hollow bag sleeve, a lifting assembly and a guide assembly. According to the device, the sealing plate is unfolded to move downwards in the pressure pipeline, sludge in the pressure pipeline is discharged, the coupling pipe is rotated to be separated from the pressure pipeline, the whole coupling pipe is lifted upwards, the coupling pipe is lifted to a maintenance platform to be cleaned, the situation that a worker descends to the bottom of a pump station for dredging is replaced, and the maintenance and cleaning efficiency is improved; the pump is firstly coupled with the coupling pipe, meanwhile, the coupling pipe and the pump are rotated, hard garbage at the bottom of the coupling pipe is pushed to one side, the coupling pipe is transversely coupled with the pressure pipe, the situation that hard garbage hinders coupling of the pump and the pressure pipe is avoided, the butt joint accuracy of the connecting position is improved, and the situation that the sewage discharging efficiency is reduced due to sewage leakage is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of maintenance of pump station units, and specifically to a lifting device for maintaining water conservancy pump station units. Background Art

[0002] A pump station is a device and project that can provide hydraulic power and pneumatic power with a certain pressure and flow rate, called pump and pump station projects. The three main components are the fuel tank, motor, and pump, but there are also many auxiliary equipment, which need to be increased or decreased according to the actual situation, such as fuel supply equipment, compressed air equipment, water filling equipment, water supply and drainage equipment, ventilation equipment, lifting equipment, etc.

[0003] Most of the existing lifting equipment for pump stations is divided into two parts. One part is a chain connected to the pump, and the other part is the lifting equipment body. When the inside of the pump and the pressure pipe is severely silted up, the pump needs to be lifted upward through the chain. When lifting, the coupler inside connecting the pressure pipe and the pump is still fixed to the bottom of the pump station, and the silt inside it and the silt accumulated in the pressure pipe are not easy to clean. It requires personnel to go down to the bottom of the pump station to clean again. It is not convenient to clean the silt inside the coupler and the pressure pipe from the maintenance platform through the lifting equipment when the pump is lifted. And when the pump is lowered after the maintenance is completed, it is only connected to the pressure pipe by falling through the weight of the pump itself through coupling. When there are hard garbage in the silt below the pump, it is easy to hinder the coupling of the pump and the pressure pipe, resulting in gaps at the connection, and sewage will leak from the gaps, leading to a decrease in the efficiency of sewage discharge. Summary of the Invention

[0004] The purpose of the present invention is to provide a lifting device for maintaining water conservancy pump station units to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A lifting device for maintaining water conservancy pump station units includes a pump station main body. An inspection platform is fixedly installed inside the pump station main body, a cover plate is hinged to the upper end of the pump station main body, and a pressure pipe is fixedly connected inside the pump station main body. It further includes:

[0007] A coupling assembly, fixed to the bottom of the pump station main body. The coupling assembly includes a base fixedly installed at the bottom of the pump station main body. A rotating support frame is rotatably inserted above the base. A coupling pipe is fixedly installed inside the rotating support frame. An arc-shaped guiding pipe is integrally formed on the outer surface of the coupling pipe. One end of the coupling pipe is movably provided with a pump;

[0008] A silt cleaning assembly, arranged inside the pressure pipe. The silt cleaning assembly includes a plurality of hinged connection blocks. A hollow rod is fixedly installed at the upper end of the arc-shaped guiding pipe;

[0009] The plugging assembly is hinged to one end of the connecting block;

[0010] The hollow bladder sleeve is fixedly installed on the lower surface of the pump;

[0011] The lifting assembly is movably arranged inside the pump station main body;

[0012] The guiding assembly is fixedly installed on one side surface of the cover plate.

[0013] Furthermore: The other end of the coupling pipe is movably fitted to the lower end of the pressure pipe. The water outlet end of the pump is fixedly installed with a connection port that is movably coupled to the coupling pipe. Guide rods are symmetrically and fixedly installed on the surface of the rotating support frame. A sliding sleeve that is respectively slidably connected to the hollow rod and the guide rod is fixedly installed on the upper surface of the connection port. A conical connection sleeve is fixedly installed at the upper end of the outer surface of the pump.

[0014] Furthermore: Guide frames are fixedly installed on both sides of multiple connecting blocks inside the pressure pipe, the coupling pipe, and the arc-shaped guiding pipe. Limiting strips are symmetrically and fixedly installed on the inner surface of the hollow rod. A first slider is slidably connected to the outside of the limiting strips inside the hollow rod. The first slider is hinged to the connecting block at one end. A pull rod is fixedly installed at the upper end of the first slider. A connecting plate that is detachably connected to the maintenance platform is fixedly installed at the upper ends of the guide rod and the hollow rod.

[0015] Preferably: The plugging assembly includes:

[0016] A fixed block, which is hinged to one end of the connecting block at the other end and is slidably fitted to the guide frame;

[0017] Two sealing plates, which are symmetrically and rotatably connected to both ends of the fixed block;

[0018] Two guide rods, which are symmetrically and fixedly installed at the upper end of the inner surface of the pressure pipe;

[0019] Two rubber guide blocks, which are symmetrically and fixedly installed at the intersection of the inner surface of the pressure pipe and the guide rods.

[0020] Preferably: A fixed frame is fixedly installed on the lower surface of the hollow bladder sleeve. The fixed frame is fixedly connected to the pump. A one-way port is fixedly communicated with the lower end of the outer surface of the hollow bladder sleeve. The one-way port is slidably fitted to the coupling pipe.

[0021] Furthermore: The lifting assembly includes:

[0022] Two fixed rings;

[0023] Multiple support plates, which are fixedly installed on the outer surfaces of the two fixed rings at equal angles;

[0024] A rotating ring, which is rotatably connected between the two fixed rings;

[0025] A gear ring, fixedly mounted on the lower surface of the rotating ring;

[0026] The connecting frame is fixedly mounted on the upper surface of a fixing ring located above.

[0027] Preferably: a plurality of slide grooves are provided at equal angles on the upper surface of the fixed ring located above, a second slider is slidably connected inside the slide groove, a plurality of arc grooves are provided at equal angles on one side surface of the rotating ring, the lower end of the second slider slides through adjacent arc grooves, and an insertion rod is fixedly installed at the lower end of the second slider which is movably fitted with the fixed ring located below.

[0028] Preferably, a motor is fixedly mounted on one side surface of the fixing ring located at the top, a gear is fixedly mounted on the output end of the motor, and the gear is meshed and transmission-connected with a gear ring.

[0029] Preferably: the guide assembly comprises:

[0030] A slide rail, fixedly mounted on a surface of one side of the cover plate;

[0031] The extension plate is slidably connected to the inside of the slide rail.

[0032] Preferably, a plurality of movable pulleys with different angles are installed on the outer surface of the extension plate, a pull rope is wound between the plurality of movable pulleys, and one end of the pull rope is fixedly connected to the connecting frame.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. By moving the pump upward, the connection port is separated from the coupling pipe, and only the pump is lifted, or by rotating the coupling pipe to separate it from the pressure pipe, pulling the connecting plate to lift the coupling pipe upward as a whole, and lifting the coupling pipe to the maintenance platform for cleaning, instead of going down to the bottom of the pump station body for silt removal, the maintenance and cleaning efficiency is improved. Conversely, when the pump is moved downward, the pump is first coupled with the coupling pipe, and the connecting plate is rotated to make the guide rod and the hollow rod drive the coupling pipe to rotate and move downward, pushing the hard garbage at the bottom to one side, so that the coupling pipe is coupled with the pressure pipe laterally to prevent the harder garbage from hindering the coupling of the pump and the pressure pipe, increase the docking accuracy of the connection, and avoid the decrease in sewage discharge efficiency caused by sewage leakage.

[0035] 2. Use the maintenance vehicle outside the main body of the pump station to pull the pull rod connected by ropes to lift the No. 1 slider upward, so that multiple connecting blocks drive the sealing assembly downward inside the pressure pipe. The two sealing plates are flipped outward through the rubber guide blocks and expanded, squeezing the sludge downward and discharging it from the inside of the pressure pipe.

[0036] 3. Lower the drawstring, cover the fixed ring outside the pump, run the motor to make the rotating ring rotate, gather multiple insertion rods towards the middle, insert them under the conical connecting sleeve to drive the pump to move upward, and when the lifting component is not in use, suspend it at the upper end inside the pump station main body, reducing its contact with sewage and the erosion caused by its direct connection to the pump.

[0037] 4. A check valve structure is provided inside the one-way port, and a drain port that can be opened is additionally provided outside the hollow bladder sleeve. The hollow bladder sleeve is in a contracted state and is located at the lower end outside the pump. After the one-way port is docked with the coupling pipe, the silt inside the pressure pipe is discharged into the hollow bladder sleeve, making it fill and surround the outside of the pump to protect it from being knocked during the upward movement and improving the protection effect of the lifting device. Brief Description of the Drawings

[0038] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 is a schematic diagram of the vertical cross-sectional structure of the guiding component of the present invention;

[0040] Figure 3 is a schematic diagram of the split structure at the connection between the connecting plate and the maintenance platform in the present invention;

[0041] Figure 4 is a schematic diagram of a partial structure of the coupling component, silt cleaning component and lifting component in the present invention;

[0042] Figure 5 is a schematic diagram of the split structure of the lifting component in the present invention;

[0043] Figure 6 is a schematic diagram of the vertical cross-sectional structure of the lifting component in the present invention;

[0044] Figure 7 is a schematic diagram of a partial vertical cross-sectional structure of the silt cleaning component and the coupling component in the present invention;

[0045] Figure 8 is a schematic diagram of the overall structure of the hollow bladder sleeve in the present invention;

[0046] Figure 9 is a schematic diagram of the split structure of the coupling pipe and the base in the present invention;

[0047] Figure 10 is a schematic diagram of the split structure of the plugging component in the present invention.

[0048] In the figure: 1. Main body of the pumping station; 101. Maintenance platform; 102. Cover plate; 103. Pressure pipe; 2. Coupling component; 201. Base; 202. Rotating support frame; 203. Coupling pipe; 204. Pump; 205. Conical connecting sleeve; 206. Connection port; 207. Arc-shaped guiding pipe; 208. Guide rod; 209. Sliding sleeve; 3. Dredging component; 301. Hollow rod; 302. Limit strip; 303. First slider; 304. Pull rod; 305. Connecting plate; 306. Guiding frame; 307. Connecting block; 4. Sealing component; 401. Fixed block; 402. Sealing plate; 403. Guide rod; 404. Rubber guide block; 5. Hollow capsule sleeve; 501. Fixed frame; 502. One-way port; 6. Lifting component; 601. Fixed ring; 602. Support plate; 603. Rotating ring; 604. Gear ring; 605. Arc-shaped groove; 606. Chute; 607. Second slider; 608. Insert rod; 609. Connecting frame; 7. Motor; 701. Gear; 8. Guiding component; 801. Slide rail; 802. Extension plate; 803. Movable pulley; 804. Pulling rope. Specific embodiments

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0050] Please refer to Figure 1-10 , in the embodiment of the present invention, a lifting device for the maintenance of a water conservancy pumping station unit includes a main body 1 of the pumping station. An inspection platform 101 is fixedly installed inside the main body 1 of the pumping station. A cover plate 102 is hinged to the upper end of the main body 1 of the pumping station. A pressure pipe 103 is fixedly connected inside the main body 1 of the pumping station. It further includes: a coupling component 2 fixed to the bottom of the main body 1 of the pumping station. The coupling component 2 includes a base 201 fixedly installed at the bottom of the main body 1 of the pumping station. A rotating support frame 202 is rotatably inserted above the base 201. A coupling pipe 203 is fixedly installed inside the rotating support frame 202. An arc-shaped guiding pipe 207 is integrally formed on the outer surface of the coupling pipe 203. One end of the coupling pipe 203 is movably provided with a pump 204. A dredging component 3 is arranged inside the pressure pipe 103. The dredging component 3 includes a plurality of hinged connecting blocks 307. A hollow rod 301 is fixedly installed at the upper end of the arc-shaped guiding pipe 207. A sealing component 4 is hinged to one end of the connecting block 307. A hollow capsule sleeve 5 is fixedly installed on the lower surface of the pump 204. A lifting component 6 is movably arranged inside the main body 1 of the pumping station. A guiding component 8 is fixedly installed on one side surface of the cover plate 102.

[0051] Specifically, the coupling pipe 203 is used to connect the pump 204 and the pressure pipe 103. The dredging assembly 3 can drive the plugging assembly 4 to move inside the pressure pipe 103, squeeze the silt inside the pressure pipe 103 downward and discharge it. The lifting assembly 6 is used to pull the pump 204 upward. At the same time, the dredging assembly 3 can lift the coupling pipe 203 upward to facilitate the cleaning of the silt inside it.

[0052] Embodiment 1

[0053] As Figure 4 and Figure 7 shown, in this embodiment, the other end of the coupling pipe 203 is movably attached to the lower end of the pressure pipe 103. A connection port 206 that is movably coupled to the coupling pipe 203 is fixedly installed at the water outlet end of the pump 204. Guide rods 208 are symmetrically and fixedly installed on the surface of the rotary support frame 202. A sliding sleeve 209 that is slidably connected to the hollow rod 301 and the guide rod 208 is fixedly installed on the upper surface of the connection port 206. A tapered connection sleeve 205 is fixedly installed at the upper end of the outer surface of the pump 204.

[0054] In this embodiment, the sliding sleeve 209 moves upward along the hollow rod 301 and the guide rod 208, increasing the stability of the pump 204 when it moves upward and preventing it from tilting. When the pump 204 moves upward, the connection port 206 separates from the coupling pipe 203, and only the pump 204 is lifted. Or by rotating the coupling pipe 203, separating it from the pressure pipe 103, pulling the connecting plate 305, and lifting the coupling pipe 203 as a whole upward to lift the coupling pipe 203 to the maintenance platform 101 for cleaning, replacing the need for personnel to enter the bottom of the pumping station main body 1 for dredging, improving the maintenance and cleaning efficiency. Conversely, when the pump 204 moves downward, first couple the pump 204 with the coupling pipe 203. By rotating the connecting plate 305, the guide rod 208 and the hollow rod 301 drive the coupling pipe 203 to rotate and move downward, pushing the hard garbage at its bottom to one side, making the coupling pipe 203 horizontally coupled with the pressure pipe 103 to prevent harder garbage from hindering the coupling of the pump 204 and the pressure pipe 103, increasing the docking accuracy at the connection and avoiding the decrease in sewage discharge efficiency caused by sewage leakage.

[0055] As Figure 3 、 Figure 4 、 Figure 7 、 Figure 9 and Figure 10As shown in the figure, in this embodiment, guide frames 306 are fixedly installed on both sides of a plurality of connection blocks 307 inside the pressure pipe 103, the coupling pipe 203, and the arc-shaped guide pipe 207. Limit strips 302 are symmetrically and fixedly installed on the inner surface of the hollow rod 301. A first slider 303 is slidably connected to the outside of the limit strips 302 inside the hollow rod 301. The first slider 303 is hinged to the connection block 307 at one end. A pull rod 304 is fixedly installed at the upper end of the first slider 303. A connecting plate 305 detachably connected to the maintenance platform 101 is fixedly installed at the upper ends of the guide rod 208 and the hollow rod 301; the plugging assembly 4 includes: a fixed block 401 hinged to one end of the connection block 307 at the other end and slidably fitted with the guide frame 306. Two sealing plates 402 are symmetrically rotatably connected to both ends of the fixed block 401. Two guide rods 403 are symmetrically fixedly installed at the upper ends of the inner surface of the pressure pipe 103. Two rubber guide blocks 404 are symmetrically fixedly installed at the intersections of the inner surface of the pressure pipe 103 and the guide rods 403.

[0056] During specific implementation, when the pump 204 is lifted upward by a certain distance, that is, after the one-way port 502 is docked with the coupling pipe 203, a maintenance vehicle outside the pump station main body 1 pulls the pull rod 304 connected by a rope upward to lift the first slider 303. Under the guiding action of the guide frame 306, a plurality of connection blocks 307 are bent and move from inside the pressure pipe 103 to inside the hollow rod 301, driving the plugging assembly 4 to move downward. The two sealing plates 402 pass through the rubber guide blocks 404 and are flipped and unfolded outward under their pushing, and then block from above. The sealing plates 402 move downward, squeezing the silt downward and discharging it from inside the pressure pipe 103.

[0057] As Figure 2-6As shown, in this embodiment, the lifting assembly 6 includes: two fixed rings 601, a plurality of support plates 602 are fixedly installed at equal angles on the outer surfaces of the two fixed rings 601, a rotating ring 603 is rotatably connected between the two fixed rings 601, a gear ring 604 is fixedly installed on the lower surface of the rotating ring 603, and a connecting frame 609 is fixedly installed on the upper surface of a fixed ring 601 located above; a plurality of slide grooves 606 are opened at equal angles on the upper surface of the fixed ring 601 located above, and a second slider 607 is slidably connected inside the slide groove 606, and a plurality of arc grooves 605 are opened at equal angles on one side surface of the rotating ring 603, and the lower end of the second slider 607 slides through the adjacent arc grooves. shaped groove 605, and the lower end of the second slider 607 is fixedly installed with an insertion rod 608 that is movably fitted with the fixed ring 601 located below; a motor 7 is fixedly installed on the surface of one side of the fixed ring 601 located above, and a gear 701 is fixedly installed on the output end of the motor 7, and the gear 701 is meshed and connected with the ring gear 604 for transmission; the guide assembly 8 includes: a slide rail 801 is fixedly installed on the surface of one side of the cover plate 102, and an extension plate 802 is slidably connected to the inside of the slide rail 801; a plurality of movable pulleys 803 at different angles are installed on the outer surface of the extension plate 802, and a pull rope 804 is wound between the plurality of movable pulleys 803, and one end of the pull rope 804 is fixedly connected to the connecting frame 609.

[0058] During specific implementation, multiple movable pulleys 803 are used to reduce the force of lifting the pump 204, and the pull rope 804 is lowered to cover the fixed ring 601 on the outside of the pump 204. The motor 7 is turned on to make the gear 701 drive the gear ring 604 to rotate, so that the swivel 603 rotates. At this time, the arc groove 605 pushes the second slider 607 to slide inside the slide groove 606, and the multiple plug rods 608 are gathered to the middle and inserted under the conical connecting sleeve 205, so that the multiple plug rods 608 can drive the pump 204 to move upward by lifting the conical connecting sleeve 205. When the lifting assembly 6 is not in use, it is hung at the upper end inside the pump station body 1 to reduce its contact with sewage and reduce the erosion caused by its direct connection with the pump 204. The pull rope 804 can be connected to an external maintenance vehicle for rapid lifting of the pump 204.

[0059] Embodiment 2

[0060] On the basis of the first embodiment, in order to make up for the problem that the pump 204 in the first embodiment is prone to collision during the lifting process.

[0061] like Figure 4 and Figure 8 As shown, in this embodiment, a fixing frame 501 is fixedly installed on the lower end surface of the hollow bag sleeve 5, and the fixing frame 501 is fixedly connected to the pump 204. A one-way port 502 is fixedly connected to the lower end of the outer surface of the hollow bag sleeve 5, and the one-way port 502 is slidably fitted with the coupling tube 203.

[0062] In specific implementation, a check valve structure is provided inside the one-way port 502, and an openable sewage outlet is additionally provided outside the hollow bladder sleeve 5. The hollow bladder sleeve 5 is in a contracted state and is located at the lower outer side of the pump 204. After the one-way port 502 is docked with the coupling pipe 203, the sludge inside the pressure pipe 103 is discharged into the hollow bladder sleeve 5, filling it and surrounding the pump 204 to protect it from being knocked during the ascending process, thereby improving the protection effect of the lifting device.

[0063] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0064] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lifting device for maintenance of a hydraulic pump station unit, comprising a pump station body (1), wherein a maintenance platform (101) is fixedly installed inside the pump station body (1), a cover plate (102) is hingedly connected to the upper end of the pump station body (1), and a pressure pipe (103) is fixedly connected inside the pump station body (1), characterized in that: Also includes: A coupling assembly (2) is fixed to the bottom of the pump station body (1), the coupling assembly (2) comprising a base (201) fixedly mounted on the bottom of the pump station body (1), a rotating support frame (202) is rotatably plugged on the top of the base (201), a coupling pipe (203) is fixedly mounted inside the rotating support frame (202), an arc-shaped guide pipe (207) is integrally formed on the outer surface of the coupling pipe (203), and a pump (204) is movably provided at one end of the coupling pipe (203); A dredging assembly (3) is arranged inside the pressure pipe (103), the dredging assembly (3) comprises a plurality of hinged connection blocks (307), and a hollow rod (301) is fixedly mounted on the upper end of the arc-shaped guide pipe (207); A plugging assembly (4) is hinged to one end of the connecting block (307); A hollow bag sleeve (5) is fixedly mounted on the lower end surface of the pump (204); A lifting assembly (6) is movably arranged inside the pump station body (1); The guide assembly (8) is fixedly mounted on a side surface of the cover plate (102).

2. The hydraulic pump station unit maintenance lifting device according to claim 1, characterized in that: The other end of the coupling pipe (203) is movably fitted with the lower end of the pressure pipe (103); a connection port (206) movably coupled to the coupling pipe (203) is fixedly mounted on the water outlet end of the pump (204); guide rods (208) are symmetrically fixedly mounted on the surface of the rotating support frame (202); a sliding sleeve (209) is fixedly mounted on the upper end surface of the connection port (206) and is slidably connected to the hollow rod (301) and the guide rod (208) respectively; and a conical connection sleeve (205) is fixedly mounted at the upper end of the outer surface of the pump (204).

3. The hydraulic pump station unit maintenance lifting device according to claim 1, characterized in that: Guide frames (306) are fixedly installed on both sides of the multiple connection blocks (307) inside the pressure pipe (103), the coupling pipe (203) and the arc-shaped guide pipe (207); a limit strip (302) is symmetrically fixedly installed on the inner surface of the hollow rod (301); a slider (303) is slidably connected to the outer side of the limit strip (302) inside the hollow rod (301); the slider (303) is hinged to the connection block (307) at one end; a pull rod (304) is fixedly installed on the upper end of the slider (303); and a connecting plate (305) detachably connected to the maintenance platform (101) is fixedly installed on the upper ends of the guide rod (208) and the hollow rod (301).

4. The hydraulic pump station unit maintenance lifting device according to claim 3, characterized in that: The blocking component (4) comprises: A fixed block (401) is hinged to one end of the connecting block (307) at the other end and is slidably fitted with the guide frame (306); Two sealing plates (402) are symmetrically rotatably connected to the two ends of the fixing block (401); Two guide rods (403) symmetrically fixedly mounted on the guide rods (403) at the upper end of the inner surface of the pressure tube (103); Two rubber guide blocks (404) are symmetrically fixedly installed at the intersection of the inner surface of the pressure tube (103) and the guide rod (403).

5. The hydraulic pump station unit maintenance lifting device according to claim 4, characterized in that: A fixing frame (501) is fixedly mounted on the lower end surface of the hollow bag sleeve (5), and the fixing frame (501) is fixedly connected to the pump (204). A one-way port (502) is fixedly connected to the lower end of the outer surface of the hollow bag sleeve (5), and the one-way port (502) is slidably fitted with the coupling tube (203).

6. The hydraulic pump station unit maintenance lifting device according to claim 1, characterized in that: The lifting assembly (6) comprises: Two fixing rings (601); A plurality of support plates (602) are fixedly mounted at equal angles on the outer surfaces of the two fixing rings (601); A rotating ring (603) rotatably connected between the two fixed rings (601); A gear ring (604) is fixedly mounted on the lower surface of the rotating ring (603); The connecting frame (609) is fixedly mounted on the upper surface of a fixing ring (601) located above.

7. The hydraulic pump station unit maintenance lifting device according to claim 6, characterized in that: A plurality of slide grooves (606) are provided at equal angles on the upper surface of the fixing ring (601) located above, and a second slider (607) is slidably connected inside the slide groove (606). A plurality of arc grooves (605) are provided at equal angles on the surface of one side of the rotating ring (603), and the lower end of the second slider (607) slides through adjacent arc grooves (605), and an insertion rod (608) is fixedly installed at the lower end of the second slider (607) to movably fit with the fixing ring (601) located below.

8. The hydraulic pump station unit maintenance lifting device according to claim 6, characterized in that: A motor (7) is fixedly mounted on one side surface of the fixing ring (601) located at the top, a gear (701) is fixedly mounted on the output end of the motor (7), and the gear (701) is meshed and transmission-connected with the gear ring (604).

9. The hydraulic pump station unit maintenance lifting device according to claim 6, characterized in that: The guide assembly (8) comprises: A slide rail (801) is fixedly mounted on a surface of one side of the cover plate (102); The extension plate (802) is slidably connected to the inside of the slide rail (801).

10. The hydraulic pump station unit maintenance lifting device according to claim 9, characterized in that: A plurality of movable pulleys (803) at different angles are installed on the outer surface of the extension plate (802), a pull rope (804) is wound between the plurality of movable pulleys (803), and one end of the pull rope (804) is fixedly connected to the connecting frame (609).

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