A pump station type hydraulic hoist

Abstract

The present invention belongs to the technical field of hydraulic hoists, and is particularly a pump station type hydraulic hoist. In view of the existing hydraulic hoists that control the opening and closing of valves through high-pressure hydraulic oil, the high-pressure hydraulic oil not only has high maintenance costs, but also has the risk of leakage, which is easy to cause pollution and safety hazards. The following scheme is proposed, which includes a water pump station mechanism and a hoist valve mechanism. The water pump station mechanism includes a pump station outer frame, and two motors and two water pumps are fixedly installed on the top of the pump station outer frame. The output end of the motor is fixedly connected to the corresponding water pump through a coupling. The structural design of the present invention is reasonable. The high-pressure water flow stored in the pressure tank is used as the driving medium for closing the hoist valve, and the driving force of the water flow through the outlet pipe is used as the driving force for opening the hoist valve. Compared with the traditional high-pressure hydraulic oil, this design is not only low in cost and energy consumption, but also has better environmental protection and safety performance, as well as higher reliability.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic hoists, and in particular to a pump station type hydraulic hoist. Background Art

[0002] A water pump station is a facility used to provide water transportation and distribution. It usually consists of water pumps, pipes, valves, control systems and other related equipment. The main function of a water pump station is to pump water from a water source and then transport it to where it is needed through pipes, such as urban water supply systems, farmland irrigation systems or industrial water systems. The water pump station can be automatically or manually controlled as needed to ensure proper water supply and distribution. The hydraulic hoist is composed of a hydraulic system and a telescopic cylinder. Through the control of the hydraulic system, the piston in the telescopic cylinder is extended and reciprocated inside the cylinder, thereby driving the connecting rod and the gate connected to the piston to move linearly to achieve the effect of opening and closing.

[0003] The existing hydraulic hoist plays an important role in the water pump station. It is usually used to control the opening and closing operations of gates, valves, and other opening and closing valve bodies in the water pump station. Through the high-pressure hydraulic oil provided by the hydraulic system, the hydraulic hoist can generate enough force to realize the opening and closing operations of these valves. This device makes the operation of the water pump station more convenient and efficient, and also makes the operation process safer and more reliable. The hydraulic hoist can be remotely controlled or automatically operated as needed, thereby improving the operating efficiency and flexibility of the water pump station.

[0004] However, in the process of implementing the embodiments of the present invention, the inventors found that there are at least the following defects in the background technology: the existing hydraulic gate hoist controls the opening and closing of the valve through high-pressure hydraulic oil. The high-pressure hydraulic oil not only has high maintenance costs, but also has the risk of leakage, which can easily cause pollution and safety hazards. Therefore, we propose a pump station type hydraulic gate hoist to solve this problem. Summary of the invention

[0005] The purpose of the present invention is to solve the problems raised in the above background technology and to propose a pump station type hydraulic hoist.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A pump station type hydraulic hoist, comprising a water pump station mechanism and a hoisting valve mechanism, wherein the water pump station mechanism comprises a pump station outer frame, two motors and two water pumps are fixedly installed on the top of the pump station outer frame, the output end of the motor is fixedly connected to the corresponding water pump through a coupling, the output ends of the two water pumps are connected to the same water outlet pipe, the outer side of the water outlet pipe is connected to a pressure tank, and the hoisting valve mechanism is connected to one end of the water outlet pipe;

[0008] The opening and closing valve mechanism includes an opening and closing valve body and a telescopic cylinder. The opening and closing valve body includes a bent pipe valve. A driving shaft is slidably installed on an inner wall of one side of the bent pipe valve. One end of the driving shaft extends into the bent pipe valve and a valve core is fixedly installed. The telescopic cylinder includes a cylinder barrel and a piston rod. The piston rod is fixedly connected to the driving shaft. The opening and closing valve mechanism is connected to the pressure tank through a long conduit.

[0009] Furthermore: a solenoid valve is arranged on the long conduit, one side of the opening and closing valve mechanism is connected to a drain pipe, and a control valve is arranged on the drain pipe.

[0010] Furthermore: an external frame is fixedly connected to the outer side of the bending pipe valve, and the external frame includes a connecting ring, a hollow guide frame and a limit ring. A guide plate is slidably installed in the hollow guide frame, and the guide plate is fixedly sleeved on the outer side of the driving shaft. A limit hole is opened in the middle of the limit ring, and the driving shaft is slidably installed in the limit hole.

[0011] Furthermore: two U-shaped connecting pipe mechanisms are arranged in the outer frame of the pump station, and the two ends of the U-shaped connecting pipe mechanism located at the top are respectively connected to the output ends of the two water pumps, and the two ends of the U-shaped connecting pipe mechanism located at the bottom are respectively connected to the input ends of the two water pumps, and an inlet pipe is arranged in the outer frame of the pump station, and the inlet pipe and the outlet pipe are respectively connected to the corresponding U-shaped connecting pipe mechanisms.

[0012] Furthermore: the U-shaped connecting pipe mechanism includes a U-shaped pipe and two manual valves, and the manual valve is connected to one end of the corresponding U-shaped pipe.

[0013] Further: the manual valve includes a valve tube, the outer side of the valve tube is fixedly connected to a support tube, a rotating shaft is rotatably installed in the support tube, the rotating shaft passes through the valve tube and a valve plate is fixedly sleeved on the outer side, one end of the rotating shaft is fixedly connected to a rotating handle, a limiting handle is rotatably installed on one side of the rotating handle, a multi-tooth ring plate is fixedly installed on the outer side of the support tube, a clamping plate is provided at one end of the limiting handle, the clamping plate is movably clamped on the multi-tooth ring plate, and the same supporting spring is fixedly connected between the limiting handle and the rotating handle.

[0014] Furthermore: the outer side of the water outlet pipe is connected to a drainage pipe, a flow meter and a pressure sensor are arranged on the drainage pipe, and the outer side of the water inlet pipe is arranged with a pressure gauge.

[0015] Furthermore: a control box and a frequency converter box are fixedly installed in the outer frame of the pump station, the control box is connected to the two motors through cables, and the frequency converter box is electrically connected to the two motors.

[0016] The beneficial effects of the present invention are:

[0017] The structural design of the present invention is reasonable. The high-pressure water flow stored in the pressure tank is used as the driving medium for closing the on-off valve, and the driving force of the water flow through the outlet pipe is used as the driving force for opening the on-off valve. Compared with traditional high-pressure hydraulic oil, this design is not only low in cost and energy consumption, but also has better environmental protection and safety performance, as well as higher reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a pump station type hydraulic gate hoist proposed by the present invention from a first perspective;

[0019] Figure 2 A schematic diagram of the three-dimensional structure of a pump station type hydraulic gate hoist proposed by the present invention from a second viewing angle;

[0020] Figure 3 for Figure 1 A partial enlarged view of part A;

[0021] Figure 4 for Figure 2 A partial enlarged view of part B;

[0022] Figure 5 for Figure 2 A partial enlarged view of part C in the middle;

[0023] Figure 6 A schematic diagram of the structure of a pressure tank and a telescopic cylinder of a pump station type hydraulic hoist proposed by the present invention;

[0024] Figure 7 A schematic diagram of the three-dimensional structure of an on-off valve body of a pump station type hydraulic hoist proposed by the present invention;

[0025] Figure 8 This is a schematic cross-sectional structure diagram of an on-off valve body of a pump station type hydraulic hoist proposed by the present invention;

[0026] Fig. 9 A schematic diagram of the three-dimensional structure of a manual valve of a pump station type hydraulic hoist proposed by the present invention;

[0027] Fig.10 The present invention provides a schematic cross-sectional structural diagram of a telescopic cylinder of a pump station type hydraulic gate hoist.

[0028] In the figure: 1. outer frame of pump station; 2. motor; 3. water pump; 4. outlet pipe; 5. pressure tank; 6. opening and closing valve mechanism; 7. opening and closing valve body; 701. elbow valve; 702. driving shaft; 703. valve core; 704. hollow guide frame; 705. limit ring; 706. guide plate; 707. connecting ring; 8. telescopic cylinder; 9. long guide tube; 10. solenoid valve; 11. drain pipe; 12. U-shaped connecting pipe mechanism; 13. U-shaped pipe; 14. manual valve; 1401. valve pipe; 1402. support cylinder; 1403. valve plate; 1404. rotating handle; 1405. limit handle; 1406. multi-tooth ring plate; 1407. supporting spring; 15. water inlet pipe; 16. drainage pipe; 17. pressure sensor; 18. flow meter; 19. pressure gauge; 20. control box; 21. inverter box. DETAILED DESCRIPTION

[0029] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is to enable those skilled in the art to better understand and implement the subject matter described herein. The functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the present specification. Various examples may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0030] Embodiment 1:

[0031] Reference Figure 1-9 A pump station type hydraulic hoist, comprising a water pump station mechanism and a hoisting valve mechanism 6, the water pump station mechanism comprising a pump station outer frame 1, two motors 2 and two water pumps 3 are fixedly installed on the top of the pump station outer frame 1, the output end of the motor 2 is fixedly connected to the corresponding water pump 3 through a coupling, the output ends of the two water pumps 3 are connected to the same water outlet pipe 4, the outer side of the water outlet pipe 4 is connected to a pressure tank 5, and the hoisting valve mechanism 6 is connected to one end of the water outlet pipe 4;

[0032] The opening and closing valve mechanism 6 includes an opening and closing valve body 7 and a telescopic cylinder 8. The opening and closing valve body 7 includes a bend valve 701. A driving shaft 702 is slidably installed on the inner wall of one side of the bend valve 701. One end of the driving shaft 702 extends into the bend valve 701 and is fixedly installed with a valve core 703. The telescopic cylinder 8 includes a cylinder barrel and a piston rod. The piston rod is fixedly connected to the driving shaft 702. The opening and closing valve mechanism 6 is connected to the pressure tank 5 through a long conduit 9.

[0033] In this embodiment, a solenoid valve 10 is provided on the long conduit 9 , one side of the opening and closing valve mechanism 6 is connected to a drain pipe 11 , and a control valve is provided on the drain pipe 11 .

[0034] It should be noted that by opening the solenoid valve 10, high-pressure water flows into the cylinder through the long conduit 9, thereby pushing the piston rod to move to one side, thereby driving the driving shaft 702 to move to one side, thereby driving the valve core 703 to move to one side to block the water inlet end of the elbow valve 701, thereby achieving the closure of the water outlet pipe 4.

[0035] In this embodiment, an external frame is fixedly connected to the outer side of the elbow valve 701, and the external frame includes a connecting ring 707, a hollow guide frame 704 and a limit ring 705. A guide plate 706 is slidably installed in the hollow guide frame 704. The guide plate 706 is fixedly sleeved on the outer side of the driving shaft 702. A limit hole is opened in the middle of the limit ring 705, and the driving shaft 702 is slidably installed in the limit hole.

[0036] It should be noted that, by providing an external frame to support the push shaft 702, the stability and rigidity of the valve core 703 can be increased, thereby reducing shaking and instability during operation. The external frame can also provide guidance for the push shaft 702 to ensure that the valve core 703 can smoothly perform linear movement during operation, reducing leakage or performance degradation caused by the unstable position of the valve core 703. The external frame can reduce the friction between the valve core 703 and the valve body 7, making the operation of the valve core 703 smoother and extending the service life of the valve core 703. By reducing the swing and shaking of the valve core 703, the bracket can improve the sealing and reduce the possibility of leakage.

[0037] In this embodiment, two U-shaped connecting pipe mechanisms 12 are arranged in the outer frame 1 of the pump station, and the two ends of the upper U-shaped connecting pipe mechanism 12 are respectively connected to the output ends of the two water pumps 3, and the two ends of the lower U-shaped connecting pipe mechanism 12 are respectively connected to the input ends of the two water pumps 3. An inlet pipe 15 is arranged in the outer frame 1 of the pump station, and the inlet pipe 15 and the outlet pipe 4 are respectively connected to the corresponding U-shaped connecting pipe mechanisms 12.

[0038] It should be noted that water supply through the cooperation of two motors 2, two water pumps 3 and two U-shaped connecting pipe mechanisms 12 can provide redundancy and backup of the system. Once one water pump 3 or motor 2 fails, the other can continue to provide water supply to ensure the reliability and continuity of the system. The two water pumps 3 and two motors 2 can share the load of the water supply system and reduce the load of each water pump 3 and motor 2, thereby extending the service life of the equipment. By controlling the operation of the two water pumps 3, the flow of the water supply system can be adjusted, and the water supply can be flexibly adjusted according to demand to meet different water needs. In some cases, by reasonably configuring and adjusting the operation of the two water pumps 3, the operating efficiency of the water supply system can be improved and energy consumption can be reduced. During peak water demand periods, the two water pumps 3 can be started at the same time to meet instantaneous large flow requirements.

[0039] It should also be noted that one end of the water outlet pipe 4 and the water inlet pipe 15 are both provided with connecting pipes, and the water outlet pipe 4 is connected to the opening and closing valve mechanism 6 through the connecting pipe. If the water outlet pipe 4 is directly connected to the opening and closing valve mechanism 6, then when the opening and closing valve needs to be maintained or replaced, the water outlet pipe 4 needs to be cut off, which will affect the normal operation of the entire system. By setting up a connecting pipe, the opening and closing valve can be easily disassembled and replaced without affecting the operation of the water outlet pipe 4. By setting up a connecting pipe, the vibration and noise in the pipeline system can be reduced, and the stability and comfort of the system can be improved.

[0040] In this embodiment, the U-shaped connecting pipe mechanism 12 includes a U-shaped pipe 13 and two manual valves 14 , and the manual valves 14 are connected to one end of the corresponding U-shaped pipe 13 .

[0041] It should be noted that the manual valve 14 is of great significance in water pipe control. It can be used to manually control the flow, pressure and direction in the water pipe system, specifically including the following aspects: the manual valve 14 can be used to adjust the flow in the water pipe system by manually rotating the valve or switch to change the smoothness of the water flow, thereby controlling the size of the water flow; the manual valve 14 can be used to adjust the pressure in the water pipe system by manually operating the valve to adjust the pressure valve in the system, thereby controlling the water pressure in the pipeline; the manual valve 14 can also be used as an emergency cut-off valve. When the water flow needs to be stopped urgently, the valve can be manually closed to prevent the water flow in the pipeline from continuing to flow.

[0042] In this embodiment, the manual valve 14 includes a valve tube 1401, and a support tube 1402 is fixedly connected to the outer side of the valve tube 1401. A rotating shaft is rotatably installed in the support tube 1402. The rotating shaft passes through the valve tube 1401 and a valve plate 1403 is fixedly sleeved on the outer side. A rotating handle 1404 is fixedly connected to one end of the rotating shaft, and a limiting handle 1405 is rotatably installed on one side of the rotating handle 1404. A multi-tooth ring plate 1406 is fixedly installed on the outer side of the support tube 1402, and a clamping plate is provided at one end of the limiting handle 1405, which is movably clamped on the multi-tooth ring plate 1406. The same support spring 1407 is fixedly connected between the limiting handle 1405 and the rotating handle 1404.

[0043] It should be noted that by pressing the limit handle 1405, one side of the limit handle 1405 is tilted outward, so that the clamping plate is separated from the multi-tooth ring plate 1406, thereby releasing the restriction on the rotation of the rotating handle 1404, and rotating the rotating handle 1404 drives the rotating shaft and the valve plate 1403 to rotate together, thereby realizing the opening and closing function of the pipeline, and the angle of the valve plate 1403 can be controlled by clamping the clamping plate between different teeth of the multi-tooth ring plate 1406. When the angle of the valve plate 1403 changes, the cross-sectional area of ​​the pipeline will also change, thereby affecting the speed and pressure of the fluid passing through the pipeline. By adjusting the angle of the valve plate 1403, the effective cross-sectional area of ​​the pipeline can be changed, thereby controlling the flow rate of the fluid through the pipeline, thereby affecting the flow rate. The change in the angle of the valve plate 1403 will cause the fluid resistance in the pipeline to change, thereby affecting the pressure in the pipeline. Under normal circumstances, the larger the opening of the valve plate 1403, the smaller the resistance when the fluid passes through the pipeline, and the pressure will also decrease accordingly.

[0044] In this embodiment, the outer side of the water outlet pipe 4 is connected to a drainage pipe 16 , on which a flow meter 18 and a pressure sensor 17 are provided, and the outer side of the water inlet pipe 15 is provided with a pressure gauge 19 .

[0045] It should be noted that the water flow is introduced into the pressure sensor 17 or the flow meter 18 through the drainage tube 16 so as to monitor and measure the water pressure or flow. The pressure gauge 19 is usually mechanical and indicates the pressure value through a pointer. These sensors and instruments can help the operator monitor the water pressure and flow in real time, thereby adjusting and controlling the working state of the water pump 3.

[0046] In this embodiment, a control box 20 and a frequency converter box 21 are fixedly installed in the outer frame 1 of the pump station. The control box 20 is connected to the two motors 2 through cables, and the frequency converter box is electrically connected to the two motors 2.

[0047] It should be noted that the control box 20 and the frequency converter box 21 are usually installed in a control room or equipment room near the water pump station 3. These devices are usually required to be installed in a dry, well-ventilated place that is easy to operate and maintain. In some cases, they can also be installed on the main structure of the water pump station 3. The control box 20 is usually connected to the water pump 3 or the motor through a cable to control its start and stop, running time, fault alarm and automatic protection functions. The frequency converter box 21 needs to be electrically connected to the water pump 3 or the motor to control the flow and pressure of the water pump 3 by adjusting the speed of the motor.

[0048] Furthermore, electrical connection refers to the process of connecting power supply, control signals and devices such as motor 2 or water pump 3 through cables, wires or other electrical equipment. These connections usually include connecting power lines, control signal lines, grounding lines, etc. to ensure that the equipment can be powered normally and can receive instructions from the control system. Correct electrical connection can ensure the safe operation and effective control of the equipment.

[0049] Embodiment 2:

[0050] Reference Fig.10 As shown, this embodiment is an improvement based on the first embodiment, and both the long conduit 9 and the drain pipe 11 are provided with a one-way valve. The flow direction of the one-way valve on the long conduit 9 is that the long conduit 9 flows into the telescopic cylinder, and the flow direction of the one-way valve on the drain pipe 11 is that the telescopic cylinder flows into the drain pipe 11.

[0051] It should be noted that the one-way valve is set to prevent high-pressure water from entering the drain pipe 11 or the long conduit 9 when entering or exiting the telescopic cylinder, because liquid filling these pipes causes pressure loss, thereby affecting the performance and response speed of the system.

[0052] The operating principle of the present invention is described as follows: start the two motors 2, and the motor 2 transmits power to the water pump 3 through the mechanical transmission of the coupling, thereby driving the impeller of the water pump 3 to rotate at a high speed, so that the water pump 3 starts to rotate and produces the effect of absorbing and pumping water. By using a frequency converter, the speed of the motor can be adjusted to control the flow and pressure of the water pump 3. In this way, the working state of the water pump 3 can be adjusted as needed to adapt to different pumping and transportation requirements. Water is supplied through the cooperation of the two motors 2, the two water pumps 3 and the two U-shaped connecting pipe mechanisms 12. Once a water pump 3 or a motor 2 is started, If one fails, the other can continue to provide water supply to ensure the reliability and continuity of the system. The two water pumps 3 and the two motors 2 can share the load of the water supply system and reduce the load of each water pump 3 and motor 2, thereby extending the service life of the equipment. The water flow is introduced into the pressure sensor 17 or the flow meter 18 through the drainage pipe 16 to monitor and measure the water pressure or flow. The pressure gauge 19 is usually mechanical and indicates the pressure value through a pointer. These sensors and instruments can help operators monitor the water pressure and flow in real time, thereby adjusting and controlling the working state of the water pump 3. After the water pump 3 is started, it will send water into the pressure tank 5. At the same time, a certain amount of air is contained in the pressure tank 5. In this way, when water is sent into the tank, the air is compressed, increasing the pressure in the tank. Once the water pressure reaches the set upper limit, the water pump 3 will stop working. However, since the air in the pressure tank 5 is compressed, it will continue to release water into the pipeline to maintain a certain pressure in the pipeline. When the water pressure in the pipeline drops to a certain level, the pressure switch will start the water pump 3 again and send water into the pressure tank 5 again. Through the action of the pressure tank 5, a certain water pressure can be maintained when the water pump 3 stops working, thereby avoiding frequent starting of the water pump 3, extending the service life of the water pump 3, and stabilizing the water pressure in the pipeline. When it is necessary to close the water outlet pipe 4, when there is a certain pressure in the pressure tank 5, by opening the solenoid valve 10, the high-pressure water flows into the cylinder through the long guide tube 9, thereby pushing the piston rod to move to one side, thereby driving the driving shaft 702 to move to one side, thereby driving the valve core 703 to move to one side to block the water inlet end of the elbow valve 701, and realizing the closure of the water outlet pipe 4. When it is necessary to open the water outlet pipe 4, the solenoid valve is closed to close the long guide tube 9, and the control valve on the drain pipe 11 is opened at the same time. The water flow in the water outlet pipe 4 drives the valve core 703 to move to one side, and the water in the water outlet pipe 4 drives the valve core 703 to move to one side. The water flow in the cylinder is pushed out to the outside through the drain pipe 11. In the above manner, the water flow replaces the traditional high-pressure hydraulic oil to realize the function of the opening and closing valve. The high-pressure water flow stored in the pressure tank 5 is used as the driving medium for closing the opening and closing valve body 7. The driving force of the water flow through the water outlet pipe 4 is used as the driving medium for opening the opening and closing valve body 7, replacing the traditional high-pressure hydraulic oil. It not only has low cost and low energy consumption, but also has better environmental protection and safety performance. The heat dissipation performance of water is better than that of hydraulic oil, which means that in some high temperature environments, water can better help cool the hydraulic system.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pump station type hydraulic hoist, characterized in that: The invention comprises a water pump station mechanism and an on-off valve mechanism (6), wherein the water pump station mechanism comprises an outer frame (1) of the pump station, two motors (2) and two water pumps (3) are fixedly mounted on the top of the outer frame (1), the output end of the motor (2) is fixedly connected to the corresponding water pump (3) via a coupling, the output ends of the two water pumps (3) are connected to the same water outlet pipe (4), the outer side of the water outlet pipe (4) is connected to a pressure tank (5), and the on-off valve mechanism (6) is connected to one end of the water outlet pipe (4); The on-off valve mechanism (6) comprises an on-off valve body (7) and a telescopic cylinder (8); the on-off valve body (7) comprises a bend valve (701); a driving shaft (702) is slidably mounted on an inner wall of one side of the bend valve (701); one end of the driving shaft (702) extends into the bend valve (701) and is fixedly mounted with a valve core (703); the telescopic cylinder (8) comprises a cylinder barrel and a piston rod; the piston rod is fixedly connected to the driving shaft (702); and the on-off valve mechanism (6) is connected to the pressure tank (5) via a long guide tube (9).

2. A pump station type hydraulic hoist according to claim 1, characterized in that: The long conduit (9) is provided with a solenoid valve (10), one side of the opening and closing valve mechanism (6) is connected to a drainage pipe (11), and the drainage pipe (11) is provided with a control valve.

3. A pump station type hydraulic hoist according to claim 1, characterized in that: An external frame is fixedly connected to the outer side of the elbow valve (701), and the external frame comprises a connecting ring (707), a hollow guide frame (704) and a limiting ring (705). A guide plate (706) is slidably mounted inside the hollow guide frame (704), and the guide plate (706) is fixedly sleeved on the outer side of the driving shaft (702). A limiting hole is provided in the middle of the limiting ring (705), and the driving shaft (702) is slidably mounted in the limiting hole.

4. A pump station type hydraulic hoist according to claim 1, characterized in that: Two U-shaped connecting pipe mechanisms (12) are arranged in the outer frame (1) of the pump station, and the two ends of the upper U-shaped connecting pipe mechanism (12) are respectively connected to the output ends of the two water pumps (3), and the two ends of the lower U-shaped connecting pipe mechanism (12) are respectively connected to the input ends of the two water pumps (3). A water inlet pipe (15) is arranged in the outer frame (1) of the pump station, and the water inlet pipe (15) and the water outlet pipe (4) are respectively connected to the corresponding U-shaped connecting pipe mechanism (12).

5. A pump station type hydraulic hoist according to claim 4, characterized in that: The U-shaped connecting pipe mechanism (12) comprises a U-shaped pipe (13) and two manual valves (14), wherein the manual valves (14) are connected to one end of the corresponding U-shaped pipe (13).

6. A pump station type hydraulic hoist according to claim 5, characterized in that: The manual valve (14) comprises a valve tube (1401), the outer side of the valve tube (1401) is fixedly connected to a support tube (1402), a rotating shaft is rotatably installed in the support tube (1402), the rotating shaft passes through the valve tube (1401) and a valve plate (1403) is fixedly sleeved on the outer side, one end of the rotating shaft is fixedly connected to a rotating handle (1404), one side of the rotating handle (1404) is rotatably installed with a limiting handle (1405), the outer side of the support tube (1402) is fixedly installed with a multi-tooth ring plate (1406), one end of the limiting handle (1405) is provided with a clamping plate, the clamping plate is movably clamped on the multi-tooth ring plate (1406), and a common supporting spring (1407) is fixedly connected between the limiting handle (1405) and the rotating handle (1404).

7. The pump station type hydraulic hoist according to claim 4, characterized in that: The outer side of the water outlet pipe (4) is connected to a drainage pipe (16), on which a flow meter (18) and a pressure sensor (17) are provided, and the outer side of the water inlet pipe (15) is provided with a pressure gauge (19).

8. The pump station type hydraulic hoist according to claim 1, characterized in that: A control box (20) and a frequency converter box (21) are fixedly installed in the outer frame (1) of the pump station; the control box (20) is connected to the two motors (2) via cables; and the frequency converter box (21) is electrically connected to the two motors (2).

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