Double-clutch high-low pressure water pump module

Abstract

The double-clutch high-low pressure water pump module comprises a double-shaft power motor, a first output shaft of the double-shaft power motor is in transmission connection with a high-pressure water pump through a first clutch, and a second output shaft of the double-shaft power motor is in transmission connection with a low-pressure water pump through a second clutch; when high-pressure water is needed, the first clutch is connected, the double-shaft power motor drives the high-pressure water pump to work through the first clutch so as to supply the high-pressure water, at the moment, the second clutch is separated, and the low-pressure water pump does not work; when low-pressure water is needed, the second clutch is connected, the double-shaft power motor drives the low-pressure water pump to work through the second clutch so as to supply the low-pressure water, at the moment, the first clutch is separated, and the high-pressure water pump does not work. The high-low pressure water pump is controlled to be started and stopped through one motor, the installation space of the sanitation vehicle chassis is greatly saved, the control structure is simplified, and later maintenance is facilitated.

Description

Technical Field

[0001] This invention relates to the field of sanitation equipment technology. Specifically, it relates to a dual-clutch high and low pressure water pump module. Background Technology

[0002] With the increasing emphasis placed on environmental protection by the country, sanitation vehicles used for road cleaning and maintenance have become indispensable equipment for urban sanitation. Most sanitation vehicles are equipped with two operating modes: low-pressure cleaning and high-pressure cleaning. During low-pressure cleaning, the corresponding motor drives the low-pressure water pump, and during high-pressure cleaning, the corresponding motor drives the high-pressure water pump.

[0003] The existing sanitation vehicles are equipped with separate low-pressure water pumps and high-pressure water pumps, each with its own independent motor. This results in technical problems such as the dual motors and dual controllers occupying a large amount of space in the sanitation vehicle chassis, and the complex structure caused by the separate control making it inconvenient for later maintenance. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide a dual-clutch high and low pressure water pump module, which controls the start and stop of the high pressure water pump and the low pressure water pump by means of a dual-shaft power motor and corresponding clutch, so as to achieve the purpose of controlling the high and low pressure water pumps with one motor, saving installation space and facilitating later maintenance.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A dual-clutch high and low pressure water pump module includes a dual-shaft motor. The first output shaft of the dual-shaft motor is connected to a high-pressure water pump via a first clutch, and the second output shaft is connected to a low-pressure water pump via a second clutch. When high-pressure water is needed, the first clutch engages, causing the dual-shaft motor to drive the high-pressure water pump to supply high-pressure water. At this time, the second clutch disengages, and the low-pressure water pump does not operate. When low-pressure water is needed, the second clutch engages, causing the dual-shaft motor to drive the low-pressure water pump to supply low-pressure water. At this time, the first clutch disengages, and the high-pressure water pump does not operate.

[0007] In the aforementioned dual-clutch high and low pressure water pump module, the first clutch is equipped with a first drive source, and the second clutch is equipped with a second drive source. When high-pressure water is needed, the first drive source is activated, engaging the first clutch and driving the high-pressure water pump. At this time, the second drive source is in the off state. When low-pressure water is needed, the first drive source is turned off, the first clutch automatically disengages, stopping the high-pressure water pump. The second drive source is activated, engaging the second clutch and driving the low-pressure water pump. When high-pressure water is needed again, the second drive source is turned off, the second clutch automatically disengages, stopping the low-pressure water pump. The first drive source is activated, engaging the first clutch and driving the high-pressure water pump. When it is necessary to stop water supply, both the first and second drive sources are turned off.

[0008] In the aforementioned dual-clutch high and low pressure water pump module, the dual-shaft power motor is installed inside a sealed housing. One end of the sealed housing is sealed and connected to the first clutch, and the other end is sealed and connected to the second clutch.

[0009] The first clutch includes a cylinder with one end sealed to the sealed housing. The end of the first output shaft of the dual-shaft power motor passes through the first port of the cylinder and is disposed inside the cylinder. The first clutch is connected to the high-pressure water pump via a reducer. The other end of the cylinder is sealed to the reducer. The output shaft of the reducer is connected to the high-pressure water pump. The end of the input shaft of the reducer passes through the second port of the cylinder and is disposed inside the cylinder.

[0010] The first clutch further includes a first clutch element and a second clutch element. The first clutch element is coaxially mounted on the end of the first output shaft of the dual-axis power motor, and rotates synchronously with the first output shaft of the dual-axis power motor. A first gear portion is provided on the outer surface of the first clutch element. The second clutch element is coaxially mounted on the end of the input shaft of the reducer, and rotates synchronously with the input shaft of the reducer. A second gear portion is provided on the outer surface of the second clutch element, which is located on the same plane as the first gear portion. The first output shaft of the dual-axis power motor and the input shaft of the reducer are coaxially arranged, and their end faces are separated by a certain distance.

[0011] A clutch assembly for disconnecting or connecting the first clutch and the second clutch is coaxially mounted inside the cylinder.

[0012] In the aforementioned dual-clutch high and low pressure water pump module, the clutch assembly includes a gear sleeve. An internal gear portion corresponding to the first gear portion and the second gear portion is disposed on the inner surface of the gear sleeve. Initially, the gear sleeve is slidably fitted onto the first clutch or the second clutch, causing the internal gear portion to engage only with the first gear portion or only with the second gear portion, thereby disengaging the first clutch and the second clutch. When synchronous rotation of the first clutch and the second clutch is required, the first drive source is activated to push the gear sleeve to slide axially along the first clutch or the second clutch, causing a portion of the gear sleeve to be fitted onto the first clutch and another portion onto the second clutch, thereby causing the internal gear portion to simultaneously engage with both the first gear portion and the second gear portion, resulting in synchronous rotation of the first clutch, the gear sleeve, and the second clutch.

[0013] The above-mentioned dual-clutch high and low pressure water pump module, the clutch assembly further includes a cylinder seat disposed at the second port of the cylinder and a piston sleeve coaxially disposed and slidably mounted on the cylinder seat;

[0014] The cylinder seat is fixedly disposed inside the cylinder, and the outer circumferential wall of the cylinder seat is sealed against the inner wall of the cylinder. The inner circumferential wall of the cylinder seat is mounted on the input shaft of the second clutch or reducer through a first bearing. The gear sleeve is slidably mounted on the second gear part of the second clutch. The outer surface of the gear sleeve and the inner surface of the piston sleeve are connected through a second bearing, so that the piston sleeve and the gear sleeve slide synchronously axially.

[0015] The aforementioned dual-clutch high and low pressure water pump module includes a cylinder comprising a cylinder body. The cylinder body is provided with a first support portion for supporting the cylinder seat to prevent axial sliding and a second support portion located near the first port of the cylinder body. The cylinder body is provided with an air inlet, a first mounting hole, and a second mounting hole, all of which are conductively connected to the inside and outside of the cylinder. A grease fitting is installed in the first mounting hole, and a vent valve is installed in the second mounting hole. The air inlet is conductively connected to a first drive source, allowing the first drive source to deliver high-pressure gas into the cylinder body through the air inlet to drive the movement of the piston sleeve.

[0016] A return spring is coaxially arranged between the piston sleeve and the cylinder. One end of the return spring is connected to the piston sleeve, and the other end is connected to the second support. After the first drive source is started, it drives the piston sleeve to compress the return spring and push the gear sleeve to move, so that the first clutch is in the engaged state. After the first drive source is turned off, under the rebound force of the return spring, the piston sleeve drives the gear sleeve to move to the initial position, so that the first clutch is in the disengaged state.

[0017] The aforementioned dual-clutch high and low pressure water pump module includes a cylinder seat comprising an inner cylinder seat and an outer cylinder seat that are coaxially arranged and integrally formed. One end of the inner cylinder seat near the second port of the cylinder is connected to the outer cylinder seat via a connecting plate of a certain thickness, forming an installation chamber with an opening facing the first clutch component between the inner and outer cylinder seats. The inner surface of the inner cylinder seat is connected to the first bearing, and the outer surface of the outer cylinder seat is in contact with the cylinder. The piston sleeve is slidably fitted onto the inner cylinder seat, with a portion of the piston sleeve placed within the installation chamber.

[0018] The outer surface of the outer cylinder seat is provided with a first annular groove corresponding to the air inlet. The first annular groove is provided with a vent hole that is connected to the mounting chamber. The air inlet is connected to the first annular groove, so that the first drive source sends high-pressure gas into the mounting chamber through the air inlet and the vent hole, thereby pushing the piston sleeve to move.

[0019] The vent hole includes a radial hole and an axial hole that are connected through each other. Both the radial hole and the axial hole are disposed inside the connecting plate. The port of the radial hole is connected through to the first annular groove, and the port of the axial hole is connected through to the mounting chamber.

[0020] Both sides of the first annular groove are provided with sealing grooves, and sealing rings are installed in the sealing grooves to ensure that the gas entering the first annular groove from the air inlet completely enters the installation chamber through the air vent.

[0021] In the aforementioned dual-clutch high and low pressure water pump module, the piston sleeve includes a first sleeve body coaxially arranged with the inner cylinder seat. A third support portion with a support surface facing the first port of the cylinder is provided on the inner wall of the first sleeve body, such that one side of the second bearing is supported by the third support portion. A fourth support portion with a support surface facing the first port of the cylinder is provided at one end of the first sleeve body near the first port of the cylinder. One end of the return spring is connected to the support surface of the fourth support portion and is supported by the fourth support portion. A second annular groove is provided on the first sleeve body. A lower oil hole is provided in the second annular groove, which is connected to the interior of the first sleeve body. The first mounting hole is connected to the second annular groove, allowing grease entering from the grease fitting to fall into the interior of the first sleeve body through the lower oil hole and then flow onto the inner gear portion of the gear sleeve.

[0022] In the aforementioned dual-clutch high and low pressure water pump module, the gear sleeve includes a second sleeve body. A fifth support portion with a support surface facing the second port of the cylinder is provided on the outer surface of the second sleeve body. The other side of the second bearing is supported by the fifth support portion, thereby realizing the synchronous axial movement of the piston sleeve and the gear sleeve. The internal gear portion is provided on the inner circumferential surface of the second sleeve body.

[0023] In the aforementioned dual-clutch high and low pressure water pump module, the second clutch has the same structure as the first clutch. The end of the second output shaft of the dual-shaft power motor passes through the first port of the second clutch and is disposed inside the cylinder of the second clutch. The end of the input shaft of the low-pressure water pump passes through the second port of the cylinder of the second clutch and is disposed inside the cylinder of the second clutch. The first clutch element of the second clutch is coaxially mounted on the end of the second output shaft of the dual-shaft power motor, and the second clutch element of the second clutch is coaxially mounted on the end of the input shaft of the low-pressure water pump.

[0024] A rotary encoder is installed on the second output shaft of the dual-axis power motor. The rotary encoder is located inside the cylinder of the second clutch and is connected to a power source via a corresponding connecting line.

[0025] The first output shaft of the dual-axis power motor is provided with a corresponding connecting bearing between the first output shaft and the cylinder of the first clutch, and the second output shaft of the dual-axis power motor is provided with a cylinder of the second clutch. An end face oil seal is also provided between the first output shaft of the dual-axis power motor and the cylinder of the first clutch. An oil seal assembly is also provided between the second output shaft of the dual-axis power motor and the cylinder of the second clutch. The oil seal assembly is located between the rotary encoder and the second clutch element of the second clutch.

[0026] The technical solution of the present invention achieves the following beneficial technical effects:

[0027] The dual-clutch high and low pressure water pump module of this application has a first output shaft and a second output shaft of a dual-shaft power motor that are respectively connected to a high-pressure water pump and a low-pressure water pump through a first clutch and a second clutch. This enables the start and stop of the high and low pressure water pumps to be controlled by a single motor, which greatly saves the installation space of the sanitation vehicle chassis. This allows other structures to be integrated and installed on the sanitation vehicle chassis, improving the integration of the sanitation vehicle. Furthermore, controlling the start and stop of the high and low pressure water pumps by a single motor simplifies the control structure and facilitates later maintenance.

[0028] The first and second clutches of this application drive the piston sleeve to move via corresponding drive sources, which in turn drive the gear sleeve to move, so that the gear sleeve changes from "only engaging with the first clutch or the second clutch" to "simultaneously engaging with the first clutch and the second clutch", thus achieving clutch engagement. After the drive source is turned off, the piston sleeve and gear sleeve are automatically reset by setting a return spring, thus achieving clutch disengagement, which greatly facilitates the control of the first and second clutches. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the dual-clutch high and low pressure water pump module of the present invention;

[0030] Figure 2 This is a front view of the dual-clutch high and low pressure water pump module of the present invention;

[0031] Figure 3 This is a cross-sectional view of the dual-clutch high and low pressure water pump module of the present invention, in which both the first clutch and the second clutch are separated.

[0032] Figure 4 for Figure 3 Enlarged view of section A in the middle;

[0033] Figure 5 This is a cross-sectional view showing the engagement of the first clutch of the dual-clutch high and low pressure water pump module of the present invention.

[0034] Figure 6 for Figure 5 Enlarged view of section B;

[0035] Figure 7 This is a schematic diagram of the cylinder of the first clutch of the present invention;

[0036] Figure 8 This is a cross-sectional view of the cylinder of the first clutch of the present invention;

[0037] Figure 9 This is a schematic diagram of the cylinder seat of the first clutch of the present invention;

[0038] Figure 10 This is a cross-sectional view of the cylinder seat of the first clutch of the present invention;

[0039] Figure 11 for Figure 10 Enlarged view of section C;

[0040] Figure 12 This is a schematic diagram of the piston sleeve of the first clutch of the present invention;

[0041] Figure 13 A cross-sectional view of the piston sleeve of the first clutch of the present invention;

[0042] Figure 14This is a schematic diagram of the gear sleeve of the first clutch of the present invention;

[0043] Figure 15 This is a schematic diagram of the structure of the first clutch component of the first clutch of the present invention;

[0044] Figure 16 This is a schematic diagram of the structure of the second clutch component of the first clutch of the present invention.

[0045] The reference numerals in the figure are as follows: 1-Dual-shaft power motor; 11-First output shaft; 12-Second output shaft; 13-Sealed housing; 2-First clutch; 21-Cylinder; 211-Cylinder body; 212-First support; 213-Second support; 214-Intake port; 215-First mounting hole; 216-Second mounting hole; 217-First port; 218-Second port; 22-First clutch element; 221-First gear part; 23-Second clutch element; 231-Second gear part; 24-Gear sleeve; 241-Internal gear part; 242-Second sleeve cylinder body; 243-Fifth support; 25-Cylinder seat; 251-Inner cylinder seat; 252-Outer cylinder seat; 253-Mounting chamber; 254-First annular groove; 255-Vent hole; 2551-Radial hole; 2552-Axial hole; 256-Sealing groove; 26-Piston sleeve; 261-First cylinder body; 262-Third support; 263-Fourth support; 264-Second annular groove; 265-Lower oil hole; 27-Reset spring; 3-High-pressure water pump; 4-Second clutch; 5-Low-pressure water pump; 6-Reducer; 61-Input shaft; 62-First bearing; 63-Second bearing; 64-Rotary encoder; 65-Connecting bearing; 66-End face oil seal; 67-Oil seal assembly; 7-Grease nipple; 8-Ventilator. Detailed Implementation

[0046] The dual-clutch high and low pressure water pump module in this embodiment, such as Figure 1 and Figure 3 As shown, the system includes a dual-axis power motor 1. The first output shaft 11 of the dual-axis power motor 1 is connected to a high-pressure water pump 3 via a first clutch 2, and the second output shaft 12 is connected to a low-pressure water pump 5 via a second clutch 4. Further, the first clutch 2 is equipped with a first drive source, and the second clutch 4 is equipped with a second drive source (neither the first nor the second drive source is shown in the figure). Both the first and second drive sources are air pumps.

[0047] like Figure 3As shown, the dual-axis power motor 1 is installed inside a sealed housing 13. One end of the sealed housing 13 is sealed to the first clutch 2, and the other end is sealed to the second clutch 4. That is, the first clutch 2 and the second clutch 4 are symmetrically arranged at both ends of the dual-axis power motor 1. Further, a sealed connection is achieved by providing corresponding mounting grooves on the connection surface between the second clutch 4 and the sealed housing 3, and installing corresponding sealing rings in the mounting grooves.

[0048] like Figure 4 As shown, the first clutch 2 includes a cylinder 21 with one end sealed to the sealed housing 13. The end of the first output shaft 11 of the dual-shaft power motor 1 passes through the first port 217 of the cylinder 21 and is disposed inside the cylinder 21. Figure 2 As shown, the first clutch 2 is connected to the high-pressure water pump 3 via a reducer 6. The other end of the cylinder 21 is sealed to the reducer 6. The output shaft of the reducer 6 is connected to the high-pressure water pump 3. The end of the input shaft of the reducer 6 passes through the second port 218 of the cylinder 21 and is disposed inside the cylinder 21.

[0049] The first clutch 2 further includes a first clutch element 22 and a second clutch element 23. The first clutch element 22 is coaxially mounted on the end of the first output shaft 11 of the dual-axis power motor 1. The first clutch element 22 rotates synchronously with the first output shaft 11 of the dual-axis power motor 1. Figure 15 As shown, the outer surface of the first clutch 22 is provided with a first gear portion 221; the second clutch 23 is coaxially mounted on the end of the input shaft of the reducer 6, and the second clutch 23 rotates synchronously with the input shaft of the reducer 6, as shown. Figure 16 As shown, the outer surface of the second clutch 23 is provided with a second gear portion 231 located on the same plane as the first gear portion 221; the first output shaft 11 of the dual-axis power motor 1 is coaxially arranged with the input shaft of the reducer 6, and there is a certain distance between their end faces;

[0050] A clutch assembly for disconnecting or connecting the first clutch element 22 and the second clutch element 23 is coaxially mounted inside the cylinder 21. Figure 5 and Figure 6As shown, the clutch assembly includes a gear sleeve 24. An internal gear portion 241, corresponding to the first gear portion 221 and the second gear portion 231, is provided on the inner surface of the gear sleeve 24. Initially, the gear sleeve 24 is slidably fitted onto the first clutch member 22 or the second clutch member 23, so that the internal gear portion 241 only meshes with the first gear portion 221 or only with the second gear portion 231, thereby disengaging the first clutch member 22 and the second clutch member 23. When the first clutch member 22 and the second clutch member 23 need to rotate synchronously, the first drive source is activated to push the gear sleeve 24 to slide axially along the first clutch member 22 or the second clutch member 23, so that a portion of the gear sleeve 24 is fitted onto the first clutch member 22 and another portion is fitted onto the second clutch member 23, thereby simultaneously meshing the internal gear portion 241 with the first gear portion 221 and the second gear portion 231, enabling the synchronous rotation of the first clutch member 22, the gear sleeve 24, and the second clutch member 23.

[0051] The clutch assembly further includes a cylinder barrel 21 seat disposed at the second port 218 of the cylinder barrel 21 and a piston sleeve 26 coaxially disposed and slidably mounted on the cylinder barrel 21 seat; the cylinder barrel 21 seat is fixedly disposed inside the cylinder barrel 21, and the outer circumferential wall of the cylinder barrel 21 seat is sealed against the inner wall of the cylinder barrel 21; the cylinder barrel 21 seat is mounted on the second clutch member 23 or the input shaft of the reducer 6 via a first bearing 62. In this example, the cylinder barrel 21 seat of the first clutch 2 is mounted on the second clutch member 23 via the first bearing 62. In the second clutch 4, the cylinder 21 seat is mounted on the input shaft of the low-pressure water pump 5 via the first bearing 62. The gear sleeve 24 is slidably mounted on the second gear part 231 of the second clutch 23. The outer surface of the gear sleeve 24 is connected to the inner surface of the piston sleeve 26 via the second bearing 63, so that the piston sleeve 26 and the gear sleeve 24 slide axially synchronously. Since the second bearing 63 is provided between the outer surface of the gear sleeve 24 and the inner surface of the piston sleeve 26, the piston sleeve 26 does not rotate when the gear sleeve 24 rotates.

[0052] like Figure 7 and Figure 8As shown, the cylinder 21 includes a cylinder body 211. The cylinder body 211 is provided with a first support part 212 for supporting the cylinder 21 seat to prevent its axial sliding and a second support part 213 provided near the first port 217 of the cylinder 21. The cylinder body 211 is provided with an air inlet 214, a first mounting hole 215 and a second mounting hole 216 that are both connected to its interior and exterior. A grease nipple 7 is installed in the first mounting hole 215 and a breather valve 8 is installed in the second mounting hole 216. The air inlet 214 is connected to the first drive source, so that the first drive source delivers high-pressure gas into the cylinder body 211 through the air inlet 214 to drive the movement of the piston sleeve 26.

[0053] like Figure 4 and Figure 6 As shown, a return spring 27 is coaxially arranged between the piston sleeve 26 and the cylinder 21. One end of the return spring 27 is connected to the piston sleeve 26, and the other end is connected to the second support part 213. After the first drive source is started, it drives the piston sleeve 26 to compress the return spring 27 and push the gear sleeve 24 to move, so that the first clutch 2 is in the engaged state. After the first drive source is turned off, under the rebound force of the return spring 27, the piston sleeve 26 drives the gear sleeve 24 to move to the initial position, so that the first clutch 2 is in the disengaged state.

[0054] like Figure 9 and Figure 10 As shown, the cylinder seat 21 includes an inner cylinder seat 251 and an outer cylinder seat 252 that are coaxially arranged and integrally formed. The end of the inner cylinder seat 251 near the second port 218 of the cylinder 21 is connected to the outer cylinder seat 252 through a connecting plate with a certain thickness, so that an installation chamber 253 with an opening facing the first clutch 22 is formed between the inner cylinder seat 251 and the outer cylinder seat 252. The inner surface of the inner cylinder seat 251 is connected to the first bearing 62, and the outer surface of the outer cylinder seat 252 is attached to the cylinder 21. The piston sleeve 26 is slidably fitted on the inner cylinder seat 251, so that a part of the piston sleeve 26 is placed in the installation chamber 253.

[0055] like Figure 11As shown, the outer surface of the outer cylinder seat 252 is provided with a first annular groove 254 corresponding to the air inlet 214. The first annular groove 254 is provided with a vent hole 255 that is connected to the mounting chamber 253. The air inlet 214 is connected to the first annular groove 254, so that the first drive source sends high-pressure gas into the mounting chamber 253 through the air inlet 214 and the vent hole 255, thereby pushing the piston sleeve 26 to move along the outer surface of the inner cylinder seat 251. Furthermore, the vent 255 includes a radial hole 2551 and an axial hole 2552 that are connected in a conductive manner. Both the radial hole 2551 and the axial hole 2552 are disposed inside the connecting plate. The port of the radial hole 2551 is connected in a conductive manner to the first annular groove 254, and the port of the axial hole 2552 is connected in a conductive manner to the mounting chamber 253. By providing the radial hole 2551 and the axial hole 2552, the thrust direction of the high-pressure gas entering from the air inlet 214 can be changed from radial to axial, so as to push the piston sleeve 26 to move axially.

[0056] like Figure 11 As shown, sealing grooves 256 are provided on both sides of the first annular groove 254. A sealing ring is installed in the sealing groove 256 to ensure that the gas entering the first annular groove 254 from the air inlet 214 completely enters the mounting chamber 253 through the vent 255.

[0057] like Figure 12 and Figure 13As shown, the piston sleeve 26 includes a first sleeve body 261 coaxially arranged with the inner cylinder seat 251. A third support portion 262 with its support surface facing the first port 217 of the cylinder 21 is provided on the inner wall of the first sleeve body 261, such that one side of the second bearing 63 is supported by the third support portion 262. A fourth support portion 263 with its support surface facing the first port 217 of the cylinder 21 is provided at one end of the first sleeve body 261. One end of the return spring 27 is connected to the support surface of the fourth support portion 263 and is supported by the fourth support portion 263. A second annular groove 26 is provided on the first sleeve body 261. 4. The second annular groove 264 is provided with an oil drain hole 265 that is connected to the inside of the first sleeve body 261. The first mounting hole 215 is connected to the second annular groove 264, so that the grease entering from the grease nipple 7 falls into the inside of the first sleeve body 261 through the oil drain hole 265, and then flows onto the inner gear part 241 of the gear sleeve 24. During operation, when the gear sleeve 24 moves along the second clutch 23 and the first clutch 22, it brings the grease to the first gear part 221 of the first clutch 22 and the second gear part 231 of the second clutch 23, thereby achieving lubrication of the first gear part 221, the second gear part 231 and the inner gear part 241.

[0058] like Figure 14 As shown, the gear sleeve 24 includes a second sleeve body 242. A fifth support portion 243 with a support surface facing the second port 218 of the cylinder 21 is provided on the outer surface of the second sleeve body 242. The other side of the second bearing 63 is supported by the fifth support portion 243, thereby realizing the axial movement of the piston sleeve 26 and the gear sleeve 24 in the same part. The internal gear portion 241 is provided on the inner circumferential surface of the second sleeve body 242.

[0059] Furthermore, the second clutch 4 has the same structure as the first clutch 2. The second clutch 4 and the first clutch 2 are symmetrically arranged at both ends of the dual-shaft power motor 1. The end of the second output shaft 12 of the dual-shaft power motor 1 passes through the first port 217 of the second clutch 4 and is disposed in the cylinder 21 of the second clutch 4. The end of the input shaft of the low-pressure water pump 5 passes through the second port 218 of the cylinder 21 of the second clutch 4 and is disposed in the cylinder 21 of the second clutch 4. The first clutch element 22 of the second clutch 4 is coaxially mounted on the end of the second output shaft 12 of the dual-shaft power motor 1, and the second clutch element 23 of the second clutch 4 is coaxially mounted on the end of the input shaft of the low-pressure water pump 5.

[0060] like Figure 5As shown, a rotary encoder 64 is installed on the second output shaft 12 of the dual-axis power motor 1. The rotary encoder 64 is located inside the cylinder 21 of the second clutch 4 and is connected to a power source through a corresponding connecting line. The rotary encoder 64 can measure the speed and position of the dual-axis power motor 1 at any time to ensure the normal operation of the dual-axis power motor 1. Furthermore, corresponding connecting bearings 65 are provided between the first output shaft 11 of the dual-axis power motor 1 and the cylinder 21 of the first clutch 2, and between the second output shaft 12 of the dual-axis power motor 1 and the cylinder 21 of the second clutch 4. An end face oil seal 66 is also provided between the first output shaft 11 of the dual-axis power motor 1 and the cylinder 21 of the first clutch 2, and an oil seal assembly 67 is also provided between the second output shaft 12 of the dual-axis power motor 1 and the cylinder 21 of the second clutch 4. The oil seal assembly 67 is located between the rotary encoder 64 and the second clutch element 23 of the second clutch 4. The oil seal assembly 67 includes a skeleton oil seal and a corresponding oil seal cover. The provision of the corresponding end face oil seal 66 and oil seal assembly 67 can prevent grease or other impurities from entering the sealed housing, ensuring the normal operation of the dual-axis power motor 1.

[0061] In practical use, when high-pressure water is needed, the first drive source is activated. The first drive source injects high-pressure gas into the mounting chamber 253 through the air inlet 214, pushing the piston sleeve 26 towards the first clutch member 22 of the first clutch 2. This, in turn, compresses the return spring 27 and simultaneously pushes the gear sleeve 24 of the first clutch 2, causing the gear sleeve 24 of the first clutch 2 to simultaneously engage with the first clutch member 22 and the second clutch member 23 of the first clutch 2 via the internal gear portion 241. This engages the first clutch 2, causing the dual-shaft power motor 1 to drive the high-pressure water pump 3 to supply high-pressure water. At this time, the second drive source is off, the second clutch 4 is disengaged, and the low-pressure water pump 5 is not working. When low-pressure water is needed, the first drive source is turned off. Under the restoring force of the return spring 27, the piston sleeve 26 of the first clutch 2 moves the gear sleeve 24 to its initial position, so that the inner gear part 241 of the gear sleeve 24 meshes only with the second gear part 231 of the second clutch 23, thereby achieving automatic disengagement of the first clutch 2, stopping the high-pressure water pump 3. Then, the second drive source is started, engaging the second clutch 4, thereby enabling the dual-shaft power motor 1 to drive the low-pressure water pump 5 through the second clutch 4 to supply low-pressure water. When high-pressure water is needed again, the second drive source is turned off, the second clutch 4 automatically disengages, stopping the low-pressure water pump 5, and the first drive source is started, engaging the first clutch 2, thereby driving the high-pressure water pump 3. When it is necessary to stop the water supply, both the first drive source and the second drive source are turned off.

[0062] The above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A dual-clutch high and low pressure water pump module, characterized in that, The system includes a dual-shaft motor (1), whose first output shaft (11) is connected to a high-pressure water pump (3) via a first clutch (2), and whose second output shaft (12) is connected to a low-pressure water pump (5) via a second clutch (4). When high-pressure water is needed, the first clutch (2) engages, causing the dual-shaft motor (1) to drive the high-pressure water pump (3) to work and supply high-pressure water. At this time, the second clutch (4) disengages, and the low-pressure water pump (5) does not work. When low-pressure water is needed, the second clutch (4) engages, causing the dual-shaft motor (1) to drive the low-pressure water pump (5) to work and supply low-pressure water. At this time, the first clutch (2) disengages, and the high-pressure water pump (3) does not work.

2. The dual-clutch high and low pressure water pump module according to claim 1, characterized in that, The first clutch (2) is equipped with a first drive source, and the second clutch (4) is equipped with a second drive source. When high-pressure water is needed, the first drive source is started, and the first clutch (2) is engaged, thereby driving the high-pressure water pump (3) to work. At this time, the second drive source is in the off state. When low-pressure water is needed, the first drive source is turned off, the first clutch (2) is automatically disengaged, and the high-pressure water pump (3) stops working. The second drive source is started, and the second clutch (4) is engaged, thereby driving the low-pressure water pump (5) to work. When high-pressure water is needed again, the second drive source is turned off, the second clutch (4) is automatically disengaged, the low-pressure water pump (5) stops working, the first drive source is started, the first clutch (2) is engaged, and the high-pressure water pump (3) is driven to work; when it is necessary to stop the water supply, both the first drive source and the second drive source are turned off.

3. The dual-clutch high and low pressure water pump module according to claim 2, characterized in that, The dual-axis power motor (1) is installed inside the sealed housing (13). One end of the sealed housing (13) is sealed and connected to the first clutch (2), and the other end is sealed and connected to the second clutch (4). The first clutch (2) includes a cylinder (21) with one end sealed to the sealed housing (13). The end of the first output shaft (11) of the dual-shaft power motor (1) passes through the first port (217) of the cylinder (21) and is disposed in the cylinder (21). The first clutch (2) is connected to the high-pressure water pump (3) through a reducer (6). The other end of the cylinder (21) is sealed to the reducer (6). The output shaft of the reducer (6) is connected to the high-pressure water pump (3). The end of the input shaft (61) of the reducer (6) passes through the second port (218) of the cylinder (21) and is disposed in the cylinder (21). The first clutch (2) further includes a first clutch element (22) and a second clutch element (23). The first clutch element (22) is coaxially mounted at the end of the first output shaft (11) of the dual-axis power motor (1). The first clutch element (22) rotates synchronously with the first output shaft (11) of the dual-axis power motor (1), and the outer surface of the first clutch element (22) is provided with a first gear portion (221). The second clutch element (23) is coaxially mounted at the end of the input shaft (61) of the reducer (6). The second clutch element (23) rotates synchronously with the input shaft (61) of the reducer (6), and the outer surface of the second clutch element (23) is provided with a second gear portion (231) located on the same plane as the first gear portion (221). The first output shaft (11) of the dual-axis power motor (1) and the input shaft (61) of the reducer (6) are coaxially arranged, and there is a certain distance between their end faces. The cylinder (21) is coaxially mounted with a clutch assembly for disconnecting or connecting the first clutch (22) and the second clutch (23).

4. The dual-clutch high and low pressure water pump module according to claim 3, characterized in that, The clutch assembly includes a gear sleeve (24). An inner gear portion (241) corresponding to the first gear portion (221) and the second gear portion (231) is provided on the inner surface of the gear sleeve (24). In the initial state, the gear sleeve (24) is slidably fitted onto the first clutch member (22) or the second clutch member (23), so that the inner gear portion (241) only engages with the first gear portion (221) or only engages with the second gear portion (231), thereby disengaging the first clutch member (22) and the second clutch member (23). When the first clutch member (22) is needed... When the clutch (22) and the second clutch (23) rotate synchronously, the first drive source is activated to push the gear sleeve (24) to slide along the axial direction of the first clutch (22) or the second clutch (23), so that a part of the gear sleeve (24) is sleeved on the first clutch (22) and the other part is sleeved on the second clutch (23), thereby causing the internal gear part (241) to mesh with the first gear part (221) and the second gear part (231) at the same time, so that the first clutch (22), the gear sleeve (24) and the second clutch (23) rotate synchronously.

5. The dual-clutch high and low pressure water pump module according to claim 4, characterized in that, The clutch assembly also includes a cylinder seat (25) disposed at the second port (218) of the cylinder (21) and a piston sleeve (26) coaxially disposed and slidably mounted on the cylinder seat (25). The cylinder seat (25) is fixedly disposed inside the cylinder (21), and the outer circumferential wall of the cylinder seat (25) is sealed against the inner wall of the cylinder (21). The inner circumferential wall of the cylinder seat (25) is mounted on the second clutch (23) or the input shaft (61) of the reducer (6) through the first bearing (62). The gear sleeve (24) is slidably mounted on the second gear part (231) of the second clutch (23). The outer surface of the gear sleeve (24) and the inner surface of the piston sleeve (26) are connected by the second bearing (63), so that the piston sleeve (26) and the gear sleeve (24) slide synchronously in the axial direction.

6. The dual-clutch high and low pressure water pump module according to claim 5, characterized in that, The cylinder (21) includes a cylinder body (211), and the cylinder body (211) is provided with a first support part (212) for supporting the cylinder seat (25) to prevent it from sliding axially and a second support part (213) provided near the first port (217) of the cylinder body; the cylinder body (211) is provided with an air inlet (214), a first mounting hole (215) and a second mounting hole (216) that are both connected to the inside and outside of the cylinder body (211), a grease nipple (7) is installed in the first mounting hole (215), and a breather valve (8) is installed in the second mounting hole (216). The air inlet (214) is connected to the first drive source, so that the first drive source delivers high-pressure gas into the cylinder body (211) through the air inlet (214) to drive the piston sleeve (26) to move. A return spring (27) is coaxially arranged between the piston sleeve (26) and the cylinder (21). One end of the return spring (27) is connected to the piston sleeve (26), and the other end is connected to the second support part (213). After the first drive source is started, it drives the piston sleeve (26) to compress the return spring (27) and push the gear sleeve (24) to move, so that the first clutch (2) is in the engaged state. After the first drive source is turned off, under the rebound force of the return spring (27), the piston sleeve (26) drives the gear sleeve (24) to move to the initial position, so that the first clutch (2) is in the disengaged state.

7. The dual-clutch high and low pressure water pump module according to claim 5, characterized in that, The cylinder seat (25) includes an inner cylinder seat (251) and an outer cylinder seat (252) that are coaxially arranged and integrally formed. The inner cylinder seat (251) is connected to the outer cylinder seat (252) at one end near the second port (218) of the cylinder (21) through a connecting plate with a certain thickness, so that an installation chamber (253) with an opening facing the first port (217) of the cylinder (21) is formed between the inner cylinder seat (251) and the outer cylinder seat (252). The inner surface of the inner cylinder seat (251) is connected to the first bearing (62), and the outer surface of the outer cylinder seat (252) is attached to the cylinder (21). The piston sleeve (26) is slidably fitted on the inner cylinder seat (251), so that a part of the piston sleeve (26) is placed in the installation chamber (253). The outer surface of the outer cylinder seat (252) is provided with a first annular groove (254) corresponding to the air inlet (214). The first annular groove (254) is provided with a vent hole (255) that is connected to the mounting chamber (253). The air inlet (214) is connected to the first annular groove (254), so that the first driving source sends high-pressure gas into the mounting chamber (253) through the air inlet (214) and the vent hole (255), thereby pushing the piston sleeve (26) to move. The vent (255) includes a radial hole (2551) and an axial hole (2552) that are connected through each other. Both the radial hole (2551) and the axial hole (2552) are located inside the connecting plate. The port of the radial hole (2551) is connected through to the first annular groove (254), and the port of the axial hole (2552) is connected through to the mounting chamber (253). Both sides of the first annular groove (254) are provided with sealing grooves (256), and sealing rings are installed in the sealing grooves (256) to ensure that the gas entering the first annular groove (254) from the air inlet (214) completely enters the installation chamber (253) through the vent (255).

8. The dual-clutch high and low pressure water pump module according to claim 6, characterized in that, The piston sleeve (26) includes a first sleeve body (261) coaxially arranged with the inner cylinder seat (251). A third support portion (262) with its support surface facing the first port (217) of the cylinder (21) is provided on the inner wall surface of the first sleeve body (261), so that one side of the second bearing (63) is supported by the third support portion (262). A fourth support portion (263) with its support surface facing the first port (217) of the cylinder (21) is provided at one end of the first sleeve body (261). The return spring (27)... One end is connected to the support surface of the fourth support part (263) and is supported by the fourth support part (263). The first sleeve body (261) is provided with a second annular groove (264). The second annular groove (264) is provided with a lower oil hole (265) that is connected to the inside of the first sleeve body (261). The first mounting hole (215) is connected to the second annular groove (264), so that the grease entering from the grease nipple (7) falls into the inside of the first sleeve body (261) through the lower oil hole (265) and then flows to the inner gear part (241) of the gear sleeve (24).

9. The dual-clutch high and low pressure water pump module according to claim 5, characterized in that, The gear sleeve (24) includes a second sleeve body (242). A fifth support part (243) with a support surface facing the second port (218) of the cylinder (21) is provided on the outer surface of the second sleeve body (242). The other side of the second bearing (63) is supported by the fifth support part (243), thereby realizing the synchronous axial movement of the piston sleeve (26) and the gear sleeve (24). The internal gear part (241) is provided on the inner circumferential surface of the second sleeve body (242).

10. The dual-clutch high and low pressure water pump module according to any one of claims 3-9, characterized in that, The second clutch (4) has the same structure as the first clutch (2). The end of the second output shaft (12) of the dual-shaft power motor (1) passes through the first port (217) of the cylinder (21) of the second clutch (4) and is located inside the cylinder (21) of the second clutch (4). The end of the input shaft of the low-pressure water pump (5) passes through the second port (218) of the cylinder (21) of the second clutch (4) and is located inside the cylinder (21) of the second clutch (4). The first clutch element (22) of the second clutch (4) is coaxially installed at the end of the second output shaft (12) of the dual-shaft power motor (1), and the second clutch element (23) of the second clutch (4) is coaxially installed at the end of the input shaft of the low-pressure water pump (5). A rotary encoder (64) is installed on the second output shaft (12) of the dual-axis power motor (1). The rotary encoder (64) is located inside the cylinder (21) of the second clutch (4) and is connected to a power source through a corresponding connecting line. A corresponding connecting bearing (65) is provided between the first output shaft (11) of the dual-axis power motor (1) and the cylinder (21) of the first clutch (2), and between the second output shaft (12) of the dual-axis power motor (1) and the cylinder (21) of the second clutch (4). An end face oil seal (66) is also provided between the first output shaft (11) of the dual-axis power motor (1) and the cylinder (2) of the first clutch (2). An oil seal assembly (67) is also provided between the second output shaft (12) of the dual-axis power motor (1) and the cylinder (21) of the second clutch (4). The oil seal assembly (67) is located between the rotary encoder (64) and the second clutch member (23) of the second clutch (4).

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