Hydraulic motor driven by aqueous medium

Abstract

A water medium driving hydraulic motor comprises a front cover, a rear cover, a water distribution disc, a water distribution disc backing ring and a water distribution cover which are sequentially assembled from front to back, a crankshaft installed in a working cavity formed by the front cover and the rear cover through first bearings arranged front and back, and odd-numbered angle rings installed outside a connecting rod journal of the crankshaft through second bearings. The plunger is installed in the rear cover in a sliding mode and forms a driving pair with each face of the odd-number angle ring, and the water distribution disc is installed in the water distribution disc backing ring and connected with the rear end of the crankshaft. The working cavity is sealed through an oil medium cavity sealing assembly; the water medium inlet and outlet channel, the distribution channel, the flow distribution channel and the leakage water channel are sealed through a water medium cavity sealing assembly. Through the matching design of the oil medium cavity sealing assembly and the water medium cavity sealing assembly, the working cavity can be lubricated by lubricating oil, and the problem that the driving pair is rusted due to long-time non-operation, so that the lubrication of the driving pair fails is thoroughly solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic motors, and particularly relates to a water-medium-driven hydraulic motor. Background Art

[0002] When overhauling the scraper chain of a scraper conveyor used in the coal mining industry at regular intervals, it is necessary to carry out tight-chain braking on the scraper conveyor. At present, the tight-chain device of the scraper conveyor usually uses a tight-chain mechanism and a hydraulic motor for tight-chain. For example, in the Chinese utility model patent application with the publication number CN101774475A and the name of hydraulic motor tight-chain device, the tight-chain is completed once, safely and efficiently through the hydraulic motor.

[0003] It is found through investigation that the hydraulic motors currently used in the tight-chain devices of scraper conveyors are usually traditional motors with hydraulic oil as the driving medium and need to be connected to a traditional hydraulic pump station for use; as is well known, hydraulic oil causes great pollution to the environment, especially to the soil and underground water sources. However, when the hydraulic pump station and the hydraulic motor are used in the coal mining environment, there are usually frequent oil leakage and seepage events. If the high-pressure oil supply pipeline bursts during use, it will cause serious environmental pollution problems.

[0004] The key to solving the above problems lies in developing a hydraulic motor that uses a clean medium instead of hydraulic oil as the driving medium. This can not only avoid the oil leakage and seepage problems of traditional hydraulic motors, but more importantly, can completely avoid the large-area oil leakage and seepage problems of traditional hydraulic pump stations and hydraulic pipelines. For this reason, the Chinese utility model patent with the patent number 202023291628.1 and the name of a water-pressure-driven hydraulic five-star motor discloses the following technical solutions: adopting an internal five-star radial piston form, directly using the pressure water source as the power source, and driving the crankshaft to realize power output by the alternating water distribution movement of five pistons. The power source is convenient, the structure is compact, the volume is small, and the weight is light; there is no lateral force between the piston and the swing cylinder, and the torque is transmitted between the piston and the crankshaft through a rolling bearing, effectively reducing the friction loss during the transmission process, and having high mechanical efficiency and starting torque; the plane flow distributor is simple and reliable, improving the sealing performance and having good pressure retention; a cooling circulation channel is provided, and water is added for cooling in an external high-temperature environment to ensure that the gaps between various friction pairs are not affected by high temperature and ensure normal operation. The main friction pair mating materials are all industrial ceramics and stainless steel materials, ensuring the corrosion resistance, strength, self-lubrication, wear resistance and other properties of the friction pair components of the motor working in the water medium, and effectively improving the working reliability and service life.

[0005] However, through the study of the above-mentioned comparative document "A Hydraulic Five-star Motor Driven by Water Pressure", it is found that the spherical pair (plunger - spherical bearing sleeve) of this water-medium-driven hydraulic motor adopts a water-lubrication method. Although the mating materials of the friction pair are both industrial ceramic and stainless steel materials, to a certain extent, it can ensure the corrosion resistance, strength, self-lubrication, wear resistance and other properties of the friction pair components of the motor working in the water medium, and water cooling can be carried out through the cooling circulation channel to reduce the degree of influence on the gap between each friction pair; however, as is well known, the use frequency of the chain tensioning device on the scraper conveyor is relatively low, generally used once every 7 - 15 days. If the spherical pair (plunger - spherical bearing sleeve) in the water-medium-driven hydraulic motor adopts water lubrication instead of oil lubrication, the spherical pair (plunger - spherical bearing sleeve) is extremely likely to rust after a long period of non-operation, which will then lead to the failure of the spherical pair lubrication, and ultimately cause a sharp reduction in the life of the hydraulic motor.

[0006] Therefore, it is very necessary to develop a water-medium-driven hydraulic motor of the utility model that can adapt to long-term intermittent work and has a long service life. Content of the Utility Model

[0007] In view of the above problems, the utility model provides a water-medium-driven hydraulic motor, and the technical solutions adopted are as follows:

[0008] A water-medium-driven hydraulic motor includes a front cover, a rear cover, a water distribution plate, a water distribution plate gasket ring and a water distribution cover assembled in sequence from front to back. A crankshaft installed in the working cavity formed by the front cover and the rear cover through a bearing one arranged front and back, an odd-angle ring installed on the connecting rod journal of the crankshaft through a bearing two, a plunger slidably installed in the plunger cavity arranged circumferentially along the radial direction on the rear cover and forming a driving pair with each surface of the odd-angle ring, and a water distribution plate installed inside the water distribution plate gasket ring and connected to the rear end of the crankshaft; its characteristics are that,

[0009] An eccentric sleeve is installed at the rear end of the crankshaft through a bearing three, and the water distribution plate is fixedly installed outside the eccentric sleeve; a water medium inlet and outlet channel communicating with the inside of the water distribution plate gasket ring is opened on the water distribution cover, a distribution channel is provided on the water distribution plate, and flow distribution channels communicating the water distribution plate and the plunger cavity are provided on the water distribution plate and the rear cover; leakage water channels communicating the plunger cavity and the outside are provided on the rear cover and the front cover;

[0010] Lubricating oil is filled in the working cavity and sealed by an oil medium cavity sealing component; the water medium inlet and outlet channel, the distribution channel, the flow distribution channel and the leakage water channel are sealed by a water medium cavity sealing component.

[0011] Preferably, the plunger is in a stepped shape with a larger diameter at the upper part than at the lower part; the upper part of the plunger is slidably installed in the plunger cavity through a plunger cavity hole sleeve, and the flow distribution channel is arranged at the upper end of the plunger cavity hole sleeve, and the leakage water channel is arranged at the lower end of the plunger cavity hole sleeve.

[0012] Preferably, the water medium inlet and outlet channels include a first working port and a second working port arranged on the outer side of the water distribution cover, a first leakage water port penetrating through the center of the water distribution cover, a first flow distribution ring channel and a second flow distribution ring channel arranged on the inner side of the water distribution cover and communicating with the first working port and the second working port respectively; the flow distribution channels include a flow distribution hole and a water inlet and outlet hole respectively arranged on the water distribution disk and the rear cover for communicating the water distribution disk and the plunger cavity; the leakage water channels include a leakage water hole and a leakage water ring cavity which are communicated from the inside to the outside and arranged on the rear cover, the inner end of the leakage water hole is communicated with the plunger cavity, and the outer side of the leakage water ring cavity is communicated with a second leakage water port arranged on the front cover.

[0013] Preferably, the oil medium cavity sealing assembly includes a first crankshaft seal arranged on the front cover and the water distribution disk respectively and rotationally sealing the crankshaft, a front cover sealing ring arranged on the front cover and forming a static seal with the rear cover, a first plunger cavity sealing ring arranged in the plunger cavity and slidingly sealing the lower part of the plunger, and a flow distribution disk sealing ring arranged on the water distribution disk and forming a static seal with the rear cover.

[0014] Preferably, the water medium cavity sealing assembly includes a second crankshaft seal arranged on the water distribution disk and rotationally sealing the crankshaft, a gasket sealing ring arranged on the front and rear sides of the water distribution disk gasket and forming static seals with the water distribution cover and the water distribution disk respectively, a flow distribution hole sealing ring arranged on the water distribution disk and used for hermetically connecting the flow distribution hole and the water inlet and outlet hole, a plunger sealing ring arranged on the upper part of the plunger and forming a sliding seal with the plunger cavity hole sleeve, a second plunger cavity sealing ring arranged in the plunger cavity and forming a static seal with the plunger cavity hole sleeve, and two leakage channel sealing rings arranged on the front cover and used for hermetically connecting the leakage water ring cavity and the second leakage water port.

[0015] Preferably, an oil cavity channel communicating with the working cavity is further arranged on the rear cover.

[0016] Preferably, a slipper is installed at the lower end of the plunger, and a driving pair is formed with the corresponding surface of the odd-angle ring through the slipper.

[0017] Since the present utility model adopts the above technical solution, the present utility model has the following advantages:

[0018] 1. Through the cooperative design of the oil medium cavity sealing assembly and the water medium cavity sealing assembly, the present utility model enables the lubrication mode of lubricating oil to be adopted in the working cavity, and thoroughly solves the problem that the driving pair (plunger - odd-angle ring) rusts due to non-operation for a long time, thereby causing the lubrication failure of the driving pair.

[0019] 2. By designing the plunger and the plunger cavity into a stepped shape, the utility model effectively improves the power-weight ratio of the utility model.

[0020] 3. By arranging a slipper at the lower end of the plunger, the utility model effectively reduces the working noise and further extends the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figures 1-4 It is a schematic diagram of the overall assembly structure of the utility model.

[0022] Figure 5 For the utility model Figure 3 It is a schematic diagram of the sectional structure at A-A in the utility model.

[0023] Figure 6 For the utility model Figure 4 It is a schematic diagram of the sectional structure at B-B in the utility model.

[0024] Figures 7-12 It is a schematic diagram of the sectional structure when the plunger of the utility model completes one reciprocating motion.

[0025] Figures 13-14 It is an exploded structure diagram of the utility model.

[0026] Figure 15 It is a schematic diagram of the assembly structure of the utility model with the water distribution cover removed.

[0027] Figure 16 It is a schematic diagram of the assembly structure of the utility model with the front cover removed.

[0028] Figure 17 It is a schematic diagram of the structure of the crankshaft of the utility model.

[0029] Figure 18 It is a schematic diagram of the structure of the front cover of the utility model.

[0030] Figure 19 It is a schematic diagram of the structure of the rear cover of the utility model.

[0031] Figure 20 It is a schematic diagram of the structure of the water distribution cover of the utility model.

[0032] Figures 21-23 It is a schematic diagram of the structure of the water distribution disk of the utility model.

[0033] Figure 24 It is a schematic diagram of the sectional structure in the second embodiment of the utility model.

[0034] Reference Numerals in the Drawings:

[0035] 1 - Crankshaft (101 - Connecting rod journal); 2 - Front cover (201 - Leakage water port two); 3 - Rear cover (301 - Plunger cavity; 302 - Water inlet and outlet holes; 303 - Oil cavity passage; 304 - Leakage water hole; 305 - Leakage water ring cavity); 4 - Bearing one; 5 - Odd - numbered angle ring; 6 - Bearing two; 7 - Plunger; 8 - Plunger cavity hole sleeve; 9 - Plug one; 10 - Water distribution cover (1001 - Working port one; 1002 - Working port two; 1003 - Distribution ring channel one; 1004 - Distribution ring channel two; 1005 - Leakage water port one); 11 - Water distribution disk (1101 - Distribution channel); 12 - Water distribution disk gasket ring; 13 - Water distribution plate (1301 - Distribution hole); 14 - Eccentric sleeve; 15 - Bearing three; 16 - Oil medium cavity sealing assembly (1601 - Crankshaft shaft seal one; 1602 - Front cover sealing ring; 1603 - Plunger cavity sealing ring one; 1604 - Distribution plate sealing ring); 17 - Water medium cavity sealing assembly (1701 - Crankshaft shaft seal two; 1702 - Gasket ring sealing ring; 1703 - Distribution hole sealing ring; 1704 - Plunger sealing ring; 1705 - Plunger cavity sealing ring two; 1706 - Leakage channel sealing ring); 18 - Slide shoe. Detailed implementation mode

[0036] The technical solutions of the present utility model will be further specifically described below through embodiments in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0037] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inlet", "outlet", "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. Embodiment 1:

[0038] As Figures 1-23As shown in the figure, a water-medium-driven hydraulic motor includes a front cover 2, a rear cover 3, a water distribution disk 13, a water distribution disk gasket ring 12, and a water distribution cover 10 that are assembled in sequence from front to back. A crankshaft 1 is installed in a working chamber formed by the front cover 2 and the rear cover 3 through a bearing 1 4 arranged front and back. An odd-angle ring 5 is installed outside the connecting rod journal 101 of the crankshaft 1 through a bearing 2 6. A plunger 7 is slidably installed in a plunger chamber 301 arranged in a radial circular array along the upper edge of the rear cover 3 and forms a driving pair with each surface of the odd-angle ring 5. A water distribution disk 11 is installed inside the water distribution disk gasket ring 12 and is connected to the rear end of the crankshaft 1. The outer end of each plunger chamber 301 is sealed by a plug 1 9. In this embodiment, the odd-angle ring 5 is a regular heptagon.

[0039] As a specific implementation manner of this embodiment, as Figures 5-12 shown in the figure, in order to improve the power-to-weight ratio, by fully designing the shape of the plunger chamber 301 to maximize the power output of the water-medium-driven hydraulic motor in this embodiment, the plunger 7 is in a stepped shape with a larger upper diameter than the lower diameter. The upper part of the plunger 7 is slidably installed in the plunger chamber 301 through a plunger chamber hole sleeve 8, and a flow distribution channel is arranged at the upper end of the plunger chamber hole sleeve 8, and a leakage water channel is arranged at the lower end of the plunger chamber hole sleeve 8.

[0040] An eccentric sleeve 14 is installed at the rear end of the crankshaft 1 through a bearing 3 15, and the water distribution disk 11 is fixedly installed outside the eccentric sleeve 14. A water-medium inlet and outlet channel communicating with the inside of the water distribution disk gasket ring 12 is opened on the water distribution cover 10. A distribution channel 1101 is arranged on the water distribution disk 11. Flow distribution channels communicating the water distribution disk 11 and the plunger chamber 301 are arranged on the water distribution disk 13 and the rear cover 3. Leakage water channels communicating the plunger chamber 301 and the outside are arranged on the rear cover 3 and the front cover 2.

[0041] As a specific implementation manner of this embodiment, as Figure 8 shown in the figure, the water-medium inlet and outlet channel includes a working port 1 1001 and a working port 2 1002 arranged on the outside of the water distribution cover 10, a leakage water port 1 1005 penetrating the center of the water distribution cover 10, a flow distribution ring channel 1 1003 and a flow distribution ring channel 2 1004 arranged on the inside of the water distribution cover 10 and respectively communicating with the working port 1 1001 and the working port 2 1002. The leakage water port 1 1005 is used to discharge the water leaking between the water distribution disk 11 and the water distribution disk 13 and the water distribution cover 10. The flow distribution channels include flow distribution holes 1301 and water inlet and outlet holes 302 respectively arranged on the water distribution disk 13 and the rear cover 3 for communicating the water distribution disk 11 and the plunger chamber 301. The leakage water channels include leakage water holes 304 and a leakage water ring cavity 305 that are communicated and arranged from the inside to the outside on the rear cover 3. The inner end of the leakage water hole 304 is communicated with the plunger chamber 301, and the outside of the leakage water ring cavity 305 is communicated with a leakage water port 2 201 arranged on the front cover 2. The leakage water port 2 201 is used to discharge the water leaking between the upper part of the plunger 7 and the plunger chamber hole sleeve 8.

[0042] The working chamber is filled with lubricating oil and sealed by the oil medium chamber sealing assembly 16; the water medium inlet and outlet channels, the distribution channel 1101, the flow distribution channel and the leakage water channel are sealed by the water medium chamber sealing assembly 17.

[0043] As a specific implementation manner of this embodiment, as Figures 6-7 shown, the oil medium chamber sealing assembly 16 includes a crankshaft shaft seal one 1601 respectively arranged on the front cover 2 and the water flow distribution disc 13 and rotationally sealed with the crankshaft 1, a front cover sealing ring 1602 arranged on the front cover 2 and forming a static seal with the rear cover 3, a plunger chamber sealing ring one 1603 arranged in the plunger chamber 301 and slidingly sealed with the lower part of the plunger 7, and a flow distribution disc sealing ring 1604 arranged on the water flow distribution disc 13 and forming a static seal with the rear cover 3.

[0044] As a specific implementation manner of this embodiment, as Figure 7 shown, the water medium chamber sealing assembly 17 includes a crankshaft shaft seal two 1701 arranged on the water flow distribution disc 13 and rotationally sealed with the crankshaft 1, a gasket sealing ring 1702 arranged on the front and rear sides of the water distribution disc gasket 12 and respectively forming static seals with the water flow distribution cover 10 and the water flow distribution disc 13, a flow distribution hole sealing ring 1703 arranged on the water flow distribution disc 13 and used for hermetically connecting the flow distribution hole 1301 and the water inlet and outlet hole 302, a plunger sealing ring 1704 arranged on the upper part of the plunger 7 and forming a sliding seal with the plunger chamber hole sleeve 8, a plunger chamber sealing ring two 1705 arranged in the plunger chamber 301 and forming a static seal with the plunger chamber hole sleeve 8, and two leakage channel sealing rings 1706 arranged on the front cover 2 and used for hermetically connecting the leakage water ring chamber 305 and the leakage water port two 201.

[0045] As a specific implementation manner of this embodiment, as Figures 5-12 shown, two oil chamber channels 303 communicating with the working chamber are further arranged on the rear cover 3. In this embodiment, one of the oil chamber channels 303 is used for oil inlet and the other is used for oil discharge. Under the daily working conditions of the water medium driven hydraulic motor in this embodiment, both oil chamber channels 303 are sealed by the second plug.

[0046] Working principle:

[0047] This embodiment takes the working port one 1001 as the low-pressure oil return port and the working port two 1002 as the high-pressure oil inlet port as an example, and combines Figures 6-12 to state the working principle as follows:

[0048] During operation, high-pressure water enters the water distribution plate 11 through the second working port 1002 and the second distribution ring 1004, and low-pressure water is discharged through the distribution ring 1003 and the first working port 1001. Water leaking from the water distribution plate 11 and the water distribution plate 13 and the water distribution cover 10 is discharged through the leakage water port 1005, and water leaking from the upper part of the plunger 7 and the plunger cavity hole sleeve 8 is discharged through the leakage water channel.

[0049] Initially, the upper part of one of them is located at the bottom of the plunger cavity sleeve 8 (just completing the action of high pressure pushing the crankshaft 1, such as Figure 6 As shown), at this time, the water distribution plate 11 is just staggered with the distribution hole 1301 corresponding to the plunger 7, so that the distribution hole 1301 is connected with the inside of the water distribution plate gasket 12;

[0050] The high-pressure water entering the water distribution plate 11 enters the corresponding plunger cavity 301 through other distribution holes 1301 and the water inlet and outlet holes 302 to push the corresponding plunger 7 downward to push the crankshaft 1 to continue rotating. Figures 7-9 As shown, the water distribution plate 11, driven by the eccentric sleeve 14, makes the distribution hole 1301 and the inside of the water distribution plate gasket 12 just connected to completely connected and then completely closed, thereby completing a complete return movement of the plunger 7; at the same time, in this process, the plunger 7 moves upward to the uppermost end, and the water in the corresponding plunger cavity hole sleeve 8 is gradually discharged through the water inlet and outlet holes 302, the distribution hole 1301, the distribution ring 1003 and the working port 1001, and when the plunger 7 is about to move to the uppermost end, the distribution hole 1301 and the inside of the water distribution plate gasket 12 are about to be closed, and the water distribution plate 11 and the distribution hole 1301 corresponding to the plunger 7 are about to be connected;

[0051] Then, high-pressure water enters the plunger cavity 301 through the flow distribution hole 1301 and the inlet and outlet hole 302 to push the plunger 7 downward, while the water in other plunger cavities 301 is gradually discharged through the inlet and outlet hole 302, the flow distribution hole 1301, the flow distribution loop 1003 and the working port 1001. In this process, Figures 10-12 As shown, the water distribution plate 11 is driven by the eccentric sleeve 14 to move from just connected to fully connected and then to fully closed with the distribution hole 1301 corresponding to the plunger 7, thereby completing a complete pushing action of the plunger 7; when the plunger 7 is about to move to the lowermost end, the distribution hole 1301 and the water distribution plate 11 are about to be closed, and the inside of the water distribution plate gasket 12 is about to be connected with the distribution hole 1301 corresponding to the plunger 7;

[0052] Thus, a push and return action of the plunger 7 is completed;

[0053] By performing the cyclic action in the above manner, the odd-numbered angle ring 5 can be driven to perform circular motion, and the odd-numbered angle ring 5 can then drive the crankshaft 1 to achieve continuous power output. Example 2:

[0054] The difference between this embodiment and Embodiment 1 is that as Figure 24 shown, a slipper 18 is installed at the lower end of the plunger 7, and a driving pair is formed with the corresponding surface of the odd-angle ring 5 through the slipper 18; such a design can effectively reduce the running noise of the water-medium-driven hydraulic motor in this embodiment and improve its service life.

Claims

1. A water-medium-driven hydraulic motor, comprising a front cover (2), a rear cover (3), a water distribution plate (13), a water distribution plate gasket ring (12) and a water distribution cover (10) assembled in sequence from front to back, a crankshaft (1) installed in a working chamber formed by the front cover (2) and the rear cover (3) through a front and rear arranged bearing one (4), an odd-angle ring (5) installed on the connecting rod journal (101) of the crankshaft (1) through a bearing two (6), a plunger (7) slidably installed in a plunger chamber (301) arranged in a radial circumferential array along the upper edge of the rear cover (3) and forming a driving pair with each surface of the odd-angle ring (5), and a water distribution plate (11) installed inside the water distribution plate gasket ring (12) and connected to the rear end of the crankshaft (1); characterized in that, An eccentric sleeve (14) is installed at the rear end of the crankshaft (1) through a bearing three (15), and the water distribution plate (11) is fixedly installed on the outer side of the eccentric sleeve (14); a water-medium inlet and outlet channel communicating with the inside of the water distribution plate gasket ring (12) is opened on the water distribution cover (10), a distribution channel (1101) is provided on the water distribution plate (11), and a flow distribution channel communicating the water distribution plate (11) and the plunger chamber (301) is provided on the water distribution plate (13) and the rear cover (3); a leakage water channel communicating the plunger chamber (301) and the outside is provided on the rear cover (3) and the front cover (2); Lubricating oil is filled in the working chamber and sealed by an oil-medium chamber sealing assembly (16); the water-medium inlet and outlet channel, the distribution channel (1101), the flow distribution channel and the leakage water channel are sealed by a water-medium chamber sealing assembly (17).

2. The hydraulic motor driven by a water medium according to claim 1, characterized in that The plunger (7) is in a stepped shape with a larger diameter at the upper part than at the lower part; the upper part of the plunger (7) is slidably installed in the plunger chamber (301) through a plunger chamber hole sleeve (8), and the flow distribution channel is arranged at the upper end of the plunger chamber hole sleeve (8), and the leakage water channel is arranged at the lower end of the plunger chamber hole sleeve (8).

3. The hydraulic motor driven by a water medium according to claim 2, wherein The water-medium inlet and outlet channel includes a working port one (1001) and a working port two (1002) arranged on the outer side of the water distribution cover (10), a leakage water port one (1005) penetrating through the center of the water distribution cover (10), a flow distribution ring channel one (1003) and a flow distribution ring channel two (1004) arranged on the inner side of the water distribution cover (10) and respectively communicating with the working port one (1001) and the working port two (1002); the flow distribution channel includes a flow distribution hole (1301) and a water inlet and outlet hole (302) respectively arranged on the water distribution plate (13) and the rear cover (3) for communicating the water distribution plate (11) and the plunger chamber (301); the leakage water channel includes a leakage water hole (304) and a leakage water ring cavity (305) communicated and arranged on the rear cover (3) from inside to outside, the inner end of the leakage water hole (304) is communicated with the plunger chamber (301), and the outer side of the leakage water ring cavity (305) is communicated with a leakage water port two (201) arranged on the front cover (2).

4. The water-medium-driven hydraulic motor according to claim 3, characterized in that, The oil medium chamber sealing assembly (16) includes a crankshaft seal one (1601) respectively arranged on the front cover (2) and the water distribution plate (13) and rotationally sealed with the crankshaft (1), a front cover sealing ring (1602) arranged on the front cover (2) and forming a static seal with the rear cover (3), a plunger chamber sealing ring one (1603) arranged in the plunger chamber (301) and slidingly sealed with the lower part of the plunger (7), and a distribution plate sealing ring (1604) arranged on the water distribution plate (13) and forming a static seal with the rear cover (3).

5. The water medium-driven hydraulic motor according to claim 3, characterized in that, The water medium chamber sealing assembly (17) includes a crankshaft seal two (1701) arranged on the water distribution plate (13) and rotationally sealed with the crankshaft (1), a gasket sealing ring (1702) arranged on the front and rear sides of the water distribution plate gasket ring (12) and respectively forming static seals with the water distribution cover (10) and the water distribution plate (13), a distribution hole sealing ring (1703) arranged on the water distribution plate (13) and used for hermetically connecting the distribution hole (1301) and the water inlet and outlet hole (302), a plunger sealing ring (1704) arranged on the upper part of the plunger (7) and forming a sliding seal with the plunger chamber hole sleeve (8), a plunger chamber sealing ring two (1705) arranged in the plunger chamber (301) and forming a static seal with the plunger chamber hole sleeve (8), and two leakage channel sealing rings (1706) arranged on the front cover (2) and used for hermetically connecting the leakage water ring chamber (305) and the leakage water port two (201).

6. The hydraulic motor driven by a water medium according to claim 1, wherein An oil chamber channel (303) communicating with the working chamber is further provided on the rear cover (3).

7. A water-medium-driven hydraulic motor according to any one of claims 1-6, characterized in that, A slipper (18) is installed at the lower end of the plunger (7), and a driving pair is formed with the corresponding surface of the odd-angle ring (5) through the slipper (18).

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