Hydraulic control method and system for garbage collection vehicle and environmental sanitation machinery

Abstract

The application provides a hydraulic control method and system of a garbage collection vehicle and a sanitation machine. The garbage collection vehicle comprises a garbage bin, a scraper mechanism and a sliding plate mechanism sliding on the garbage bin. The scraper mechanism comprises a scraper and a scraper oil cylinder for driving the scraper to scrape and swing. One end of the scraper oil cylinder is hinged to the sliding plate mechanism, and the other end is hinged to the scraper mechanism. The hydraulic control method of the garbage collection vehicle comprises the following steps: obtaining the current pressure of the rodless cavity of the scraper oil cylinder; comparing the current pressure of the rodless cavity of the scraper oil cylinder with a first preset pressure; when the current pressure of the rodless cavity of the scraper oil cylinder reaches the first preset pressure, bleeding the rodless cavity of the scraper oil cylinder, so that the pressure of the rodless cavity of the scraper oil cylinder is within the first preset oil pressure range. The application keeps the pressure of the rodless cavity of the scraper oil cylinder within a certain oil pressure range through bleeding, improves the accuracy of the whole hydraulic control system, and prevents the scraper from scratching the garbage bin due to the excessively high oil pressure of the scraper oil cylinder.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of environmental sanitation machinery, and particularly relates to a hydraulic control method and system of a garbage collection vehicle and an environmental sanitation machinery. BACKGROUND

[0002] With the increasing environmental protection requirements, the tail non-fully-closed device of the current garbage can has gradually failed to meet the use requirements, and a tail fully-closed device is usually used to realize the functions of garbage compaction and covering of the garbage opening. If the sensor on the sliding plate mechanism fails to sense or delays sensing, and the oil pressure of the oil circuit of the scraper mechanism is not reduced, the scraper mechanism will cause certain damage to the garbage can during the compaction process. Moreover, due to inaccurate control, the conventional hydraulic system often leads to either incomplete covering, with garbage easily spilling out, or excessive covering, with the scraper colliding with the garbage can and the scraper being damaged. SUMMARY

[0003] The main purpose of the present application is to provide a hydraulic control method and system of a garbage collection vehicle and an environmental sanitation machinery, aiming to solve the technical problem of inaccurate control of the hydraulic system of the garbage collection vehicle in the prior art, thereby causing garbage spilling during transportation and damage to the scraper.

[0004] In order to achieve the above-mentioned purpose, the present application provides a hydraulic control method of a garbage collection vehicle, the garbage collection vehicle comprising a garbage can, a scraper mechanism, and a sliding plate mechanism sliding on the garbage can, the scraper mechanism comprising a scraper and a scraper oil cylinder for driving the scraper to scrape and swing, one end of the scraper oil cylinder being hinged to the sliding plate mechanism, and the other end being hinged to the scraper, the hydraulic control method of the garbage collection vehicle comprising:

[0005] obtaining the current pressure of the rodless cavity of the scraper oil cylinder;

[0006] comparing the current pressure of the rodless cavity of the scraper oil cylinder with a first preset pressure;

[0007] when the current pressure of the rodless cavity of the scraper oil cylinder reaches the first preset pressure, bleeding the rodless cavity of the scraper oil cylinder, so that the pressure of the rodless cavity of the scraper oil cylinder is within a first preset oil pressure range.

[0008] In the embodiment of the present application, a first safety valve is arranged on the oil circuit of the scraper oil cylinder, and the step of bleeding the rodless cavity of the scraper oil cylinder when the current pressure of the rodless cavity of the scraper oil cylinder reaches the first preset pressure, so that the pressure of the rodless cavity of the scraper oil cylinder is within the first preset oil pressure range, comprises:

[0009] when the current pressure of the rodless cavity of the scraper oil cylinder reaches the first preset pressure, the oil inlet and the oil outlet of the first safety valve are communicated.

[0010] In the embodiment of the present application, the garbage collection vehicle further comprises a main oil supply circuit for controlling the operation of the scraper mechanism and the slide plate mechanism, and the hydraulic control method of the garbage collection vehicle further comprises:

[0011] acquiring the current oil pressure of the main oil supply circuit;

[0012] comparing the current oil pressure of the main oil supply circuit with the second preset pressure;

[0013] when the current oil pressure of the main oil supply circuit reaches the second preset pressure, releasing the pressure of the main oil supply circuit so that the oil pressure of the main oil supply circuit is within the second preset oil pressure range.

[0014] In the embodiment of the present application, the main oil supply circuit is provided with a second safety valve, and when the current oil pressure of the main oil supply circuit reaches the second preset pressure, the step of releasing the pressure of the main oil supply circuit so that the oil pressure of the main oil supply circuit is within the second preset oil pressure range comprises:

[0015] when the current oil pressure of the main oil supply circuit reaches the second preset pressure, the oil outlet of the second safety valve is communicated with the oil tank.

[0016] In the embodiment of the present application, the slide plate mechanism comprises a slide plate frame sliding on the garbage bin and a slide plate oil cylinder for driving the slide plate frame to move, the slide plate oil cylinder comprises a front section oil cylinder and a rear section oil cylinder, and the hydraulic control method of the garbage collection vehicle further comprises:

[0017] acquiring the required working mode of the garbage collection vehicle;

[0018] when the required working mode is a garbage pressing mode, controlling the rod cavity of the rear section oil cylinder to return oil and the rodless cavity to admit oil until the rear section piston rod extends to a preset pressing position;

[0019] controlling the rodless cavities of the scraper oil cylinder and the front section oil cylinder to admit oil and the rod cavities to return oil so as to drive the scraper to swing and scrape towards the garbage filling inlet.

[0020] In the embodiment of the present application, the hydraulic control method of the garbage collection vehicle further comprises:

[0021] when the required working mode is a sealing covering mode, controlling the rod cavities of the front section oil cylinder and the rear section oil cylinder to admit oil and the rodless cavities to return oil so as to drive the front section piston rod and the rear section piston rod to retract to the position;

[0022] controlling the rodless cavity of the scraper oil cylinder to admit oil and the rod cavity to return oil so as to drive the scraper to seal and cover the garbage filling inlet.

[0023] In the embodiment of the present application, the outer peripheral bottom of the front section oil cylinder is provided with a first sensing plate, and the slide plate frame is provided with a first position detection member for sensing cooperation with the first sensing plate, and the hydraulic control method comprises:

[0024] When the first position detection member senses the first sensing plate, a first position sensing signal is sent out;

[0025] The retraction of the front section piston rod is judged according to the first position sensing signal.

[0026] In the embodiment of the present application, the outer periphery bottom of the rear section oil cylinder is provided with a second sensing plate, and the garbage can is provided with a second position detection member that senses the second sensing plate, and the control of the rod cavity oil return and the rod chamber oil inlet of the rear section oil cylinder until the rear section piston rod extends to the preset compression position includes:

[0027] When the second position detection member senses the second sensing plate, a second position sensing signal is sent out;

[0028] The extension of the rear section piston rod is judged according to the second position sensing signal.

[0029] In the embodiment of the present application, a hydraulic control system of a garbage collection vehicle is also proposed, which adopts the hydraulic control method as described above.

[0030] In the embodiment of the present application, the hydraulic control system includes a multi-way valve arranged on the main oil supply oil path, and the multi-way valve includes two parallel reversing valves, and the two reversing valves are respectively in communication with the front section oil cylinder and the rear section oil cylinder.

[0031] In the embodiment of the present application, a sanitation machine is also proposed, which includes the hydraulic control system as described above.

[0032] Through the above technical solution, the hydraulic control method of the garbage collection vehicle provided by the embodiment of the present application has the following beneficial effects:

[0033] In the working process of the garbage collection vehicle, first, the current pressure of the rodless chamber of the scraper oil cylinder is obtained; then, the current pressure of the rodless chamber of the scraper oil cylinder is compared with the first preset pressure; when the current pressure of the rodless chamber of the scraper oil cylinder reaches the first preset pressure, the rodless chamber of the scraper oil cylinder is depressurized, so that the pressure of the rodless chamber of the scraper oil cylinder is within the first preset oil pressure range; the present application monitors the oil pressure of the rodless chamber of the scraper oil cylinder, and depressurizes the rodless chamber of the scraper oil cylinder to keep the pressure of the rodless chamber of the scraper oil cylinder within a certain oil pressure range, thereby improving the accuracy of the entire hydraulic control system, and preventing the scraper from scratching the garbage can due to the excessively high oil pressure of the scraper oil cylinder.

[0034] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0036] Figure 1 is a flowchart of a hydraulic control method of a garbage collection vehicle according to an embodiment of the present application;

[0037] Figure 2 is a structural diagram of a garbage bin of a garbage collection vehicle according to an embodiment of the present application;

[0038] Figure 3 is a structural diagram of a slide plate oil cylinder of a garbage collection vehicle according to an embodiment of the present application.

[0039] Explanation of reference signs

[0040] Reference Name Reference Name 10 Garbage can 226 Rear section piston rod 11 Garbage inlet 24 First induction plate 20 Slide plate mechanism 25 Second induction plate 21 Slide plate frame 30 Scraper plate 22 Slide plate oil cylinder 40 Scraper plate oil cylinder 222 Front section oil cylinder 50 First position detection member 223 Rear section oil cylinder 60 Second position detection member 225 Front section piston rod DETAILED DESCRIPTION

[0041] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0042] The hydraulic control method, system and sanitation machinery of a garbage collection vehicle according to the present application will be described below with reference to the accompanying drawings.

[0043] As shown in Figure 1 and Figure 2 , in an embodiment of the present application, a hydraulic control method of a garbage collection vehicle is provided, the garbage collection vehicle comprising a garbage bin 10, a scraper mechanism and a slide plate mechanism 20 slidably arranged on the garbage bin 10, the scraper mechanism comprising a scraper 30 and a scraper oil cylinder 40 for driving the scraper 30 to scrape and swing, one end of the scraper oil cylinder 40 being hingedly connected to the slide plate mechanism 20, and the other end being hingedly connected to the scraper 30, the sliding of the slide plate mechanism 20 on the garbage bin 10 being capable of driving the scraper mechanism to move along the front and back directions of the garbage bin 10; wherein the hydraulic control method of the garbage collection vehicle comprises:

[0044] S10: obtaining the current pressure of the rodless cavity of the scraper oil cylinder 40;

[0045] S20: comparing the current pressure of the rodless cavity of the scraper oil cylinder 40 with a first preset pressure;

[0046] S30: when the current pressure of the rodless cavity of the scraper oil cylinder 40 reaches the first preset pressure, bleeding the rodless cavity of the scraper oil cylinder 40, so that the pressure of the rodless cavity of the scraper oil cylinder 40 is within a first preset oil pressure range.

[0047] Because the conventional hydraulic system is not accurate in control, it often leads to either not covering in place, garbage easily flying out, or covering too much, the scraper 30 colliding with the garbage can 10, and the scraper 30 being damaged. The application monitors the current pressure of the rodless cavity of the scraper cylinder 40 in real time through monitoring components such as an oil pressure sensor, and when the current pressure exceeds the first preset pressure, the rodless cavity of the scraper cylinder 40 is depressurized, so that the pressure of the rodless cavity of the scraper cylinder 40 is always within a certain suitable preset oil pressure range, preventing the scraper 30 from scratching the garbage can 10. The hydraulic control method of the application is more accurate, thereby solving the technical problems of garbage not spilling during transportation and the scraper 30 being damaged. Of course, in actual operation, the current pressure of the rodless cavity of the scraper cylinder 40 can also not be obtained in real time, but can be obtained at a specific time according to actual needs, which is within the protection scope of the application.

[0048] There are many ways to depressurize the rodless cavity of the scraper cylinder 40, and preferably, in the embodiment of the application, a first safety valve is arranged on the oil circuit of the scraper cylinder 40, and when the current pressure of the rodless cavity of the scraper cylinder 40 reaches the first preset pressure, the rodless cavity of the scraper cylinder 40 is depressurized to make the pressure of the rodless cavity of the scraper cylinder 40 within the first preset oil pressure range, and the step of depressurizing the rodless cavity of the scraper cylinder 40 includes:

[0049] When the current pressure of the rodless cavity of the scraper cylinder 40 reaches the first preset pressure, the oil inlet and the oil outlet of the first safety valve are communicated.

[0050] In this embodiment, the first safety valve is arranged on the oil circuit of the scraper cylinder 40 and includes a first inlet, a first outlet and a first control end, the first outlet is communicated with the rod cavity of the scraper cylinder 40, and the first inlet and the first control end are communicated with the oil pump. Since the driving end of the piston rod of the scraper cylinder 40 is connected with the scraper mechanism, when the pressure of the rodless cavity of the scraper cylinder 40 reaches the first preset value during the operation of the scraper mechanism, the first inlet and the first outlet are communicated, so that the oil pressure of the rodless cavity of the scraper cylinder 40 can be depressurized to reduce the oil pressure of the scraper cylinder 40, so as to limit the working pressure of the scraper mechanism within a suitable range, preventing the garbage can 10 from being damaged due to the too high pressure of the scraper mechanism.

[0051] In the embodiment of the application, the garbage collection vehicle further comprises a main oil supply oil circuit for controlling the operation of the scraper mechanism and the slide plate mechanism 20, and the hydraulic control method of the garbage collection vehicle further comprises:

[0052] obtaining the current oil pressure of the main oil supply oil circuit;

[0053] comparing the current oil pressure of the main oil supply oil circuit with the second preset pressure;

[0054] When the current oil pressure of the main oil supply oil path reaches the second preset pressure, the main oil supply oil path is relieved to make the oil pressure of the main oil supply oil path within the second preset oil pressure range.

[0055] In this embodiment, the current oil pressure of the main oil supply oil path is monitored in real time by a monitoring component such as an oil pressure sensor, and when the current oil pressure of the main oil supply oil path exceeds the first preset pressure, the main oil supply oil path is relieved, so that the current oil pressure of the main oil supply oil path is always within a certain suitable preset oil pressure range, preventing the scraper 30 from scratching the garbage can 10; the hydraulic control method of the application is more accurate, thereby solving the technical problems of garbage spilling and damage to the scraper 30 during transportation of the garbage truck.

[0056] In the embodiments of the application, the second safety valve is arranged on the main oil supply oil path, and when the current oil pressure of the main oil supply oil path reaches the second preset pressure, the main oil supply oil path is relieved to make the oil pressure of the main oil supply oil path within the second preset oil pressure range, and the step comprises:

[0057] When the current oil pressure of the main oil supply oil path reaches the second preset pressure, the oil outlet of the second safety valve is communicated with the oil tank.

[0058] In this embodiment, the second safety valve is arranged on the main oil supply oil path and comprises a second inlet, a second outlet and a second control end, the second inlet and the second control end are connected with the oil outlet end of the oil pump, and when the oil pressure of the main oil supply oil path reaches the second preset value, the second outlet is communicated with the oil tank, so that the part of hydraulic oil greater than the second preset value flows back to the oil tank from the second outlet, thereby achieving the purpose of limiting the oil pressure of the entire hydraulic oil supply system.

[0059] Preferably, the first safety valve and the second safety valve are both overflow valves.

[0060] In the embodiments of the application, the sliding plate mechanism 20 comprises a sliding plate frame 21 sliding on the garbage can 10 and a sliding plate oil cylinder 22 driving the sliding plate frame 21 to move, the sliding plate oil cylinder 22 comprises a front section oil cylinder 222 and a rear section oil cylinder 223, and the hydraulic control method of the garbage collection truck further comprises:

[0061] acquiring a required working mode of the garbage collection truck;

[0062] when the required working mode is a garbage pressing mode, controlling the rod cavity of the rear section oil cylinder 223 to return oil and the rodless cavity to admit oil until the rear section piston rod 226 extends to a preset pressing position;

[0063] controlling the rodless cavities of the scraper oil cylinder 40 and the front section oil cylinder 222 to admit oil and the rod cavities to return oil, so as to drive the scraper 30 to swing and scrape towards the garbage filling inlet 11.

[0064] Preferably, the working mode of the garbage collection truck comprises a garbage pressing mode and a sealing covering mode.

[0065] In actual operation, a central control screen can be arranged in the cab of the garbage collection vehicle, and the garbage compression mode or the sealing and covering mode can be manually selected on the central control screen according to requirements. After the working mode is selected, the control unit controls the next action according to the corresponding working mode.

[0066] After the rear section piston rod 226 extends to the preset compression position, it indicates that the position of the scraper mechanism has reached a suitable scraping position, and at the preset position, the rear wall of the garbage bin 10 will not be damaged when the scraper 30 performs the scraping swing. Then, the control unit controls the rodless cavity of the scraper oil cylinder 40 and the front section oil cylinder 222 to advance oil, and the rod cavity to return oil, so that the piston rod of the scraper oil cylinder 40 extends, thereby enabling the scraper 30 to swing in a cycle towards the garbage filling port 11, and since the piston rod of the front section oil cylinder 222 also extends, the entire scraper mechanism is driven to move forward, thereby realizing the compression function of the garbage.

[0067] In addition, the hydraulic control method of the garbage collection vehicle further comprises:

[0068] When the required working mode is the sealing and covering mode, the rod cavity of the front section oil cylinder 222 and the rear section oil cylinder 223 is controlled to advance oil, and the rodless cavity is controlled to return oil, so that the front section piston rod 225 and the rear section piston rod 226 are driven to retract to the position;

[0069] The rodless cavity of the scraper oil cylinder 40 is controlled to advance oil, and the rod cavity is controlled to return oil, so as to drive the scraper 30 to seal and cover the garbage filling port 11.

[0070] After the garbage compression operation is completed, the garbage filling port 11 of the garbage bin 10 is covered, and at this time, the first sensing plate 24 on the front section oil cylinder 222 senses the signal of the first position sensor, indicating that the front section piston rod 225 retracts to the position. Then, the rod cavity of the rear section oil cylinder 223 is controlled to advance oil, and the rodless cavity is controlled to return oil, so that the rear section piston rod 226 retracts. In order to limit the working pressure of the scraper mechanism, the scraper 30 of the scraper oil cylinder 40 is scraped, at this time, the first safety valve is controlled to be powered on to limit the working pressure of the scraper 30 to be less than the rated maximum value, which is used to protect the scraper 30, wherein the rated maximum value can be adjusted in real time according to actual needs.

[0071] During the interaction process of the above-mentioned hydraulic control method, the current pressure of the rodless cavity of the scraper oil cylinder 40 can be detected during the operation of the garbage collection vehicle, and specifically, there can be two embodiments:

[0072] In the first embodiment, the hydraulic control method comprises the following steps:

[0073] Obtaining the required working mode of the garbage collection vehicle;

[0074] When the required working mode is the garbage compression mode, the rodless cavity of the rear oil cylinder 223 is controlled to return oil, and the rod cavity is controlled to enter oil until the rear piston rod 226 extends to the preset compression position.

[0075] The rodless cavities of the blade oil cylinder 40 and the front oil cylinder 222 are controlled to enter oil, and the rod cavities are controlled to return oil, so as to drive the blade 30 to swing and scrape towards the garbage filling port 11.

[0076] In the garbage compression process, the current pressure of the rodless cavity of the blade oil cylinder 40 is obtained in real time.

[0077] The current pressure of the rodless cavity of the blade oil cylinder 40 is compared with the first preset pressure.

[0078] When the current pressure of the rodless cavity of the blade oil cylinder 40 reaches the first preset pressure, the rodless cavity of the blade oil cylinder 40 is decompressed, so that the pressure of the rodless cavity of the blade oil cylinder 40 is within the first preset oil pressure range, thereby preventing damage to the inner wall of the garbage can 10 during the garbage compression process.

[0079] In the second embodiment, the hydraulic control method comprises the following steps:

[0080] Obtaining the required working mode of the garbage collection vehicle;

[0081] When the required working mode is the sealing and covering mode, the rod cavities of the front oil cylinder 222 and the rear oil cylinder 223 are controlled to enter oil, and the rodless cavities are controlled to return oil, thereby driving the front piston rod 225 and the rear piston rod 226 to retract to the position;

[0082] The rodless cavity of the blade oil cylinder 40 is controlled to enter oil, and the rod cavity is controlled to return oil, so as to drive the blade 30 to seal and cover the garbage filling port 11.

[0083] In the process of sealing and covering the garbage filling port 11, the current pressure of the rodless cavity of the blade oil cylinder 40 is obtained in real time.

[0084] The current pressure of the rodless cavity of the blade oil cylinder 40 is compared with the first preset pressure.

[0085] When the current pressure of the rodless cavity of the blade oil cylinder 40 reaches the first preset pressure, the rodless cavity of the blade oil cylinder 40 is decompressed, so that the pressure of the rodless cavity of the blade oil cylinder 40 is within the first preset oil pressure range, thereby preventing the sealing and covering of the garbage filling port from being unable to be realized due to the excessive oil pressure of the blade oil cylinder 40.

[0086] As shown in Figure 3 The outer peripheral bottom of the front oil cylinder 222 is provided with a first sensing plate 24, and the slide plate frame 21 is provided with a first position detection piece 50 which is in sensing cooperation with the first sensing plate 24, and the hydraulic control method comprises:

[0087] When the first position detection member 50 senses the first sensing plate 24, a first position sensing signal is sent out;

[0088] The retraction to position condition of the front section piston rod 225 is judged according to the first position sensing signal.

[0089] When the front section piston rod 225 in the front section oil cylinder 222 is retracted, the first sensing plate 24 is moved simultaneously, and when the first sensing plate 24 reaches a position close to the first position detection member 50, the first position detection member 50 can send out a corresponding position sensing signal, indicating that the front section piston rod 225 has been retracted to position at this time. The retraction to position condition of the front section piston rod 225 is judged by the sensing cooperation of the first sensing plate 24 and the first position detection member 50, which can more accurately ensure that the scraper mechanism is in the preset position of sealing and covering, and improve the sealing degree of covering.

[0090] In the embodiment of the application, the outer peripheral bottom of the rear section oil cylinder 223 is provided with a second sensing plate 25, and the garbage can 10 is provided with a second position detection member 60 that senses and cooperates with the second sensing plate 25, and the steps of controlling the rod cavity oil return and the rod cavity oil inlet of the rear section oil cylinder 223 until the rear section piston rod 226 is extended to the preset compression filling position include:

[0091] When the second position detection member 60 senses the second sensing plate 25, a second position sensing signal is sent out.

[0092] The extension to position condition of the rear section piston rod 226 is judged according to the second position sensing signal.

[0093] The hydraulic oil enters the main oil supply oil path through the oil pump, the entire hydraulic system establishes pressure, and the hydraulic oil flows into the rod cavity of the rear section oil cylinder 223 through the control unit, while the rod cavity of the rear section oil cylinder 223 returns oil, so as to control the extension of the rear section piston rod 226 of the rear section oil cylinder 223 until the second sensing plate 25 on the rear section oil cylinder 223 senses the signal of the second position sensor on the garbage can 10, indicating that the rear section piston rod 226 is extended to position at this time, and the garbage compression filling working state is reached. At this time, the garbage compression filling function operation can be performed.

[0094] Among them, the first position detection member 50 and the second position detection member 60 are both proximity switches.

[0095] The first sensing plate 24 and the second sensing plate 25 are arranged on the slide plate oil cylinder 22 in the application, compared with the arrangement of the sensing plate on the slide plate mechanism 20 in the prior art, the moving position accuracy of the slide plate mechanism 20 can be accurately controlled, the sensing failure of the sensing plate caused by the left and right swing of the slide plate frame 21 is prevented, and the slide plate oil cylinder 22 with this special structure will not scratch the garbage can 10, ensuring the safety of the equipment in use.

[0096] In the embodiments of the present application, a hydraulic control system of the garbage collection vehicle is also provided, which adopts the hydraulic control method as described above. Since the hydraulic control system adopts all the embodiments of the hydraulic control method as described above, it has all the beneficial effects brought by the hydraulic control method, which will not be described in detail herein.

[0097] In the embodiments of the present application, the hydraulic control system comprises a multi-way valve arranged on the main oil supply oil path, and the multi-way valve comprises two parallel reversing valves, and the two reversing valves are respectively in oil path communication with the front section oil cylinder 222 and the rear section oil cylinder 223. By arranging the two reversing valves, the oil inlet conditions of the front section oil cylinder 222 and the rear section oil cylinder 223 can be controlled, so that the displacement of the front section oil cylinder 222 and the rear section oil cylinder 223 can be more accurately controlled. Among them, the reversing valve is a conventional hydraulic valve in the prior art which plays a reversing role, and by the reversing role of the reversing valve, the oil inlet and return conditions of the rod cavity or the rodless cavity of the oil cylinder can be controlled.

[0098] In the embodiments of the present application, a sanitation machine is also provided, which comprises the hydraulic control system as described above. Since the sanitation machine adopts all the embodiments of the hydraulic control system as described above, it has all the beneficial effects brought by the hydraulic control system, which will not be described in detail herein.

[0099] In the description of the present application, it should be understood that the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0100] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0101] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0102] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A hydraulic control method of a refuse collection vehicle, characterized in that, The garbage collection vehicle comprises a garbage box (10), a scraper mechanism and a sliding plate mechanism (20) sliding on the garbage box (10), the scraper mechanism comprises a scraper (30) and a scraper oil cylinder (40) for driving the scraper (30) to scrape and swing, one end of the scraper oil cylinder (40) is hinged to the sliding plate mechanism (20), the other end is hinged to the scraper (30), the sliding plate mechanism (20) comprises a sliding plate frame (21) sliding on the garbage box (10) and a sliding plate oil cylinder (22) driving the sliding plate frame (21) to move, the sliding plate oil cylinder (22) comprises a front section oil cylinder (222) and a rear section oil cylinder (223), the hydraulic control method of the garbage collection vehicle comprises: obtaining the current pressure of the rodless cavity of the scraper oil cylinder (40); comparing the current pressure of the rodless cavity of the scraper oil cylinder (40) with the first preset pressure; when the current pressure of the rodless cavity of the scraper oil cylinder (40) reaches the first preset pressure, the rodless cavity of the scraper oil cylinder (40) is depressurized, so that the pressure of the rodless cavity of the scraper oil cylinder (40) is within the first preset oil pressure range; the hydraulic control method of the garbage collection vehicle further comprises: obtaining the required working mode of the garbage collection vehicle; when the required working mode is a garbage compression filling mode, controlling the rod cavity of the rear section oil cylinder (223) to return oil and the rodless cavity to admit oil until the rear section piston rod (226) extends to a preset compression filling position; controlling the rodless cavities of the scraper oil cylinder (40) and the front section oil cylinder (222) to admit oil and the rod cavities to return oil, so as to drive the scraper (30) to swing and scrape towards the garbage filling inlet (11); when the required working mode is a sealing covering mode, controlling the rod cavities of the front section oil cylinder (222) and the rear section oil cylinder (223) to admit oil and the rodless cavities to return oil, so as to drive the front section piston rod (225) and the rear section piston rod (226) to retract to the position; controlling the rodless cavity of the scraper oil cylinder (40) to admit oil and the rod cavity to return oil, so as to drive the scraper (30) to seal and cover the garbage filling inlet (11).

2. The hydraulic control method of a waste collection vehicle according to claim 1, characterized in that, The oil circuit of the scraper oil cylinder (40) is provided with a first safety valve, and when the current pressure of the rodless cavity of the scraper oil cylinder (40) reaches the first preset pressure, the oil inlet and the oil outlet of the first safety valve are communicated. The garbage collection vehicle further comprises a main oil supply oil circuit for controlling the actions of the scraper mechanism and the sliding plate mechanism (20), and the hydraulic control method of the garbage collection vehicle further comprises:

3. The hydraulic control method of a waste collection vehicle according to claim 1, characterized in that, obtaining the current oil pressure of the main oil supply oil circuit; comparing the current oil pressure of the main oil supply oil circuit with the second preset pressure; when the current oil pressure of the main oil supply oil circuit reaches the second preset pressure, the main oil supply oil circuit is depressurized, so that the oil pressure of the main oil supply oil circuit is within the second preset oil pressure range. ​ 4. The hydraulic control method of a waste collection vehicle according to claim 3, characterized in that, The main oil supply oil path is provided with a second safety valve, and when the current oil pressure of the main oil supply oil path reaches the second preset pressure, the step of relieving the pressure of the main oil supply oil path to make the oil pressure of the main oil supply oil path be in the second preset oil pressure range includes: When the current oil pressure of the main oil supply oil path reaches the second preset pressure, the oil outlet of the second safety valve is communicated with the oil tank.

5. The hydraulic control method of a waste collection vehicle according to claim 1, characterized in that, The outer peripheral bottom of the front section oil cylinder (222) is provided with a first sensing plate (24), the slide plate frame (21) is provided with a first position detection piece (50) which is inductive cooperation with the first sensing plate (24), and the hydraulic control method includes: When the first position detection piece (50) senses the first sensing plate (24), a first position sensing signal is sent; According to the first position sensing signal, whether the front section piston rod (225) is retracted to the position is judged.

6. The hydraulic control method of a waste collection vehicle according to claim 1, characterized in that, The outer peripheral bottom of the rear section oil cylinder (223) is provided with a second sensing plate (25), the garbage can (10) is provided with a second position detection piece (60) which is inductive cooperation with the second sensing plate (25), and the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, the step of controlling the rod cavity of the rear section oil cylinder (223) to return oil, ​ ​ 7. A hydraulic control system for a refuse collection vehicle, characterised in that, ​ 8. The hydraulic control system of a waste collection vehicle according to claim 7, characterized in that, ​ 9. A machine for use in grounds maintenance, characterised in that ​

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