Hydraulic control system, garbage bins and sanitation equipment

Abstract

This utility model provides a hydraulic control system, a garbage bin, and sanitation equipment, relating to the field of sanitation equipment. The hydraulic control system includes a first cylinder, a second cylinder, a first oil circuit, a second oil circuit, a first branch oil circuit, a second branch oil circuit, a third branch oil circuit, a fourth branch oil circuit, a first sequence valve, and a second sequence valve. One end of each of the first and second branch oil circuits is connected to the first oil circuit. One end of each of the third and fourth branch oil circuits is connected to the second oil circuit. The other ends of the second and third branch oil circuits are connected to the second cylinder. The other ends of the first and fourth branch oil circuits are connected to the first cylinder. The first sequence valve is located in the first branch oil circuit. The second sequence valve is located in the third branch oil circuit. This hydraulic control system can achieve sequential actions of opening / closing the door and locking the device without the need for sensors and electronic control.

Description

Technical Field

[0001] This utility model relates to the field of sanitation equipment technology, specifically to a hydraulic control system, a garbage bin, and sanitation equipment. Background Technology

[0002] Vertical waste transfer stations are efficient and environmentally friendly waste transfer and processing facilities, mainly used for the compression and transportation of municipal solid waste. Compared with traditional horizontal compression waste transfer stations, vertical waste transfer stations have advantages such as smaller footprint, better sealing, and lower energy consumption.

[0003] Vertical waste stations are equipped with corresponding waste bins to facilitate waste transfer with hooklift trucks. The bin doors are typically opened and closed by two sets of hydraulic cylinders, one driving the door panel and the other a self-locking mechanism. However, to open the door, the self-locking mechanism must be unlocked first before the door panel can open; similarly, to close the door, the door must be closed first before the self-locking mechanism locks. Current technology generally uses an electromagnetic reversing valve and a proximity switch for delayed action control. When closing the door, the door panel closes, the proximity switch senses whether it is closed, and only after confirmation does the corresponding locking cylinder drive the locking mechanism to lock after a delay. When opening the door, the locking mechanism opens first, the proximity switch senses whether it is open, and only after confirmation does the corresponding cylinder drive the door panel to open after a delay.

[0004] In existing technologies, hydraulic lines and electrical wires need to be installed in the garbage bin, and sequential control requires the integration of electronic control components and sensing elements. The structure and control are relatively complex, and a failure in electrical components or wiring can cause the garbage bin door to malfunction, thus affecting normal use. Utility Model Content

[0005] The purpose of this utility model is to provide a hydraulic control system, a garbage bin, and sanitation equipment that can unlock the door before opening it and lock it before closing it without the need for sensors and electronic control. This avoids the need for wiring, installing sensors, and setting up electronic control programs, thereby saving costs and reducing the failure rate.

[0006] The embodiments of this utility model can be implemented as follows:

[0007] In a first aspect, this embodiment provides a hydraulic control system, the hydraulic control system comprising:

[0008] The first hydraulic cylinder is used to drive the door to open or close.

[0009] The second hydraulic cylinder is used to drive the self-locking component to lock or unlock the door.

[0010] The first oil circuit and the second oil circuit, one of which is used for oil supply and the other for oil return;

[0011] The first branch oil circuit and the second branch oil circuit are both connected at one end to the first oil circuit;

[0012] The third branch oil circuit and the fourth branch oil circuit, one end of each of the third branch oil circuit and the fourth branch oil circuit is connected to the second oil circuit;

[0013] One of the other ends of the second branch oil circuit and the third branch oil circuit is connected to the rod chamber of the second oil cylinder, and the other is connected to the rodless chamber of the second oil cylinder; one of the other ends of the first branch oil circuit and the fourth branch oil circuit is connected to the rod chamber of the first oil cylinder, and the other is connected to the rodless chamber of the first oil cylinder.

[0014] A first sequence valve is located in the first branch oil circuit;

[0015] The second sequence valve is located in the third branch oil circuit.

[0016] In an optional embodiment, the first branch oil circuit is connected to the rodless chamber of the first oil cylinder;

[0017] The second branch oil circuit is connected to the rodless chamber of the second oil cylinder;

[0018] The third branch oil circuit is connected to the rod chamber of the second oil cylinder;

[0019] The fourth branch oil circuit is connected to the rod chamber of the first oil cylinder.

[0020] In an optional implementation, the first branch oil circuit is connected to the rod chamber of the first oil cylinder;

[0021] The second branch oil circuit is connected to the rodless chamber of the second oil cylinder;

[0022] The third branch oil circuit is connected to the rod chamber of the second oil cylinder;

[0023] The fourth branch oil circuit is connected to the rodless chamber of the first oil cylinder.

[0024] In an optional implementation, the first branch oil circuit is connected to the rodless chamber of the first oil cylinder;

[0025] The second branch oil circuit is connected to the rod chamber of the second oil cylinder;

[0026] The third branch oil circuit is connected to the rodless chamber of the second oil cylinder;

[0027] The fourth branch oil circuit is connected to the rod chamber of the first oil cylinder.

[0028] In an optional implementation, the first branch oil circuit is connected to the rod chamber of the first oil cylinder;

[0029] The second branch oil circuit is connected to the rod chamber of the second oil cylinder;

[0030] The third branch oil circuit is connected to the rodless chamber of the second oil cylinder;

[0031] The fourth branch oil circuit is connected to the rodless chamber of the first oil cylinder.

[0032] In an optional embodiment, the pilot inlet of the first sequence valve is connected to the fourth branch oil circuit;

[0033] The pilot inlet of the second sequence valve is connected to the second branch oil circuit.

[0034] In an optional embodiment, the check valve of the first sequence valve is unidirectionally open when hydraulic oil flows from the first branch line to the first line.

[0035] The second sequence valve's check valve is capable of unidirectional conduction when hydraulic oil flows from the third branch oil circuit toward the second oil circuit.

[0036] In an optional embodiment, the first oil circuit is provided with a first throttle valve, and the second oil circuit is provided with a second throttle valve. The check valve of the first throttle valve can be unidirectionally open when the first oil circuit returns oil to the outside, and the check valve of the second throttle valve can be unidirectionally open when the second oil circuit returns oil to the outside.

[0037] In an optional embodiment, both the second branch oil circuit and the third branch oil circuit are equipped with hydraulic locks.

[0038] In an optional embodiment, a first balance valve is provided between the first sequence valve and the first cylinder in the first branch oil circuit.

[0039] The fourth branch oil circuit is located between the first sequence valve and the first oil cylinder and is equipped with a second balance valve.

[0040] The pilot port of the first balance valve is connected to the fourth branch oil circuit;

[0041] The pilot port of the second balance valve is connected to the first branch oil circuit;

[0042] Both the check valve of the first balance valve and the check valve of the second balance valve can be opened when the first oil cylinder returns oil outward.

[0043] In an optional embodiment, both the first oil circuit and the second oil circuit are provided with quick-connect couplings.

[0044] Secondly, this embodiment also provides a trash can, including a trash can body, a door, a self-locking component, and a hydraulic control system as described in any one of the above.

[0045] The door is movably disposed at the opening of the garbage bin body. One end of the first hydraulic cylinder is connected to the garbage bin body, and the other end is connected to the door body to drive the door body to open or close.

[0046] The self-locking component is movably mounted on the garbage bin body or the door body. The second hydraulic cylinder is connected to the self-locking component and can drive the self-locking component to move to self-lock or unlock the door body.

[0047] In an optional embodiment, the first branch oil circuit is connected to the rodless chamber of the first oil cylinder, the second branch oil circuit is connected to the rodless chamber of the second oil cylinder, the third branch oil circuit is connected to the rod chamber of the second oil cylinder, and the fourth branch oil circuit is connected to the rod chamber of the first oil cylinder.

[0048] The extension of the first hydraulic cylinder can drive the door to open, and the retraction of the first hydraulic cylinder can drive the door to close.

[0049] The extension of the second hydraulic cylinder can drive the self-locking component to release the self-locking of the door, and the retraction of the second hydraulic cylinder can drive the self-locking component to lock the door.

[0050] In an optional embodiment, the first branch oil circuit is connected to the rod chamber of the first oil cylinder; the second branch oil circuit is connected to the rodless chamber of the second oil cylinder; the third branch oil circuit is connected to the rod chamber of the second oil cylinder; and the fourth branch oil circuit is connected to the rodless chamber of the first oil cylinder.

[0051] The first hydraulic cylinder can be shortened to drive the door to open, and the first hydraulic cylinder can be extended to drive the door to close.

[0052] The extension of the second hydraulic cylinder can drive the self-locking component to release the self-locking of the door, and the retraction of the second hydraulic cylinder can drive the self-locking component to lock the door.

[0053] In an optional embodiment, the first branch oil circuit is connected to the rodless chamber of the first oil cylinder; the second branch oil circuit is connected to the rod chamber of the second oil cylinder; the third branch oil circuit is connected to the rodless chamber of the second oil cylinder; and the fourth branch oil circuit is connected to the rod chamber of the first oil cylinder.

[0054] The extension of the first hydraulic cylinder can drive the door to open, and the retraction of the first hydraulic cylinder can drive the door to close.

[0055] The second hydraulic cylinder can shorten to drive the self-locking component to release the self-locking of the door, and the second hydraulic cylinder can extend to drive the self-locking component to lock the door.

[0056] In an optional embodiment, the first branch oil circuit is connected to the rod chamber of the first oil cylinder; the second branch oil circuit is connected to the rod chamber of the second oil cylinder; the third branch oil circuit is connected to the rodless chamber of the second oil cylinder; and the fourth branch oil circuit is connected to the rodless chamber of the first oil cylinder.

[0057] The first hydraulic cylinder can be shortened to drive the door to open, and the first hydraulic cylinder can be extended to drive the door to close.

[0058] The second hydraulic cylinder shortening can drive the self-locking component to release the self-locking of the door, and the second hydraulic cylinder extending can drive the self-locking component to lock the door. Thirdly, this embodiment also provides a sanitation equipment, including an equipment body, an oil tank, an oil pump, an electromagnetic reversing valve, and the garbage bin described in the above optional embodiments;

[0059] The oil tank, the oil pump, and the electromagnetic reversing valve are disposed on the equipment body; the oil pump is connected between the oil tank and the electromagnetic reversing valve, and the electromagnetic reversing valve is also connected to the oil tank; the first oil circuit and the second oil circuit are connected to the electromagnetic reversing valve, and the electromagnetic reversing valve enables the first oil circuit and the second oil circuit to selectively connect to the oil pump and the oil tank.

[0060] The beneficial effects of the hydraulic control system, garbage bin, and sanitation equipment provided in this embodiment of the utility model include:

[0061] This application includes a first hydraulic cylinder for driving the door to open or close, and a second hydraulic cylinder for driving a self-locking component to lock or unlock the door. It also includes a first and a second hydraulic circuit for supplying and returning oil, with the first hydraulic cylinder connected to both circuits via a first branch circuit and a second branch circuit, and the second hydraulic cylinder connected to both circuits via a third and a fourth branch circuit. A first sequence valve is installed in the first branch circuit, and a second sequence valve is installed in the third branch circuit. When performing the door opening action: the first oil circuit supplies oil, while the second oil circuit returns oil. Because the first branch oil circuit is equipped with a first sequence valve, it will block the flow of hydraulic oil in the first branch oil circuit. As a result, the hydraulic oil will first flow through the second branch oil circuit to the second oil cylinder to drive the second oil cylinder to act and unlock the self-locking component. After the second oil cylinder completes the unlocking action, it will stop acting and provide back pressure to the second branch oil circuit and the first oil circuit, causing the pressure in the second branch oil circuit and the first oil circuit to increase. When the pressure increases to exceed the opening pressure of the first sequence valve, the first sequence valve will open, allowing the hydraulic oil to flow from the first branch oil circuit to the first oil cylinder, thereby actuating the first oil cylinder and driving the door to open. During the closing action, the second hydraulic circuit supplies oil while the first hydraulic circuit returns oil. Because the third branch hydraulic circuit is equipped with a second sequence valve, it is blocked. This causes the hydraulic oil to flow through the fourth branch hydraulic circuit to the first cylinder, driving it to close the door. After the door closes, the first cylinder provides back pressure to the fourth branch and second hydraulic circuits, increasing their pressure. When the pressure exceeds the opening pressure of the second sequence valve, it opens, allowing hydraulic oil to flow from the third branch hydraulic circuit to the second cylinder, driving it to actuate the self-locking mechanism and lock the door. Overall, this hydraulic control system can achieve unlocking before opening and closing before locking without the need for sensors and electrical control. This avoids the need for wiring, sensor installation, and electrical control programming, saving costs and reducing the failure rate. Attached Figure Description

[0062] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0063] Figure 1 This embodiment provides a schematic diagram of the structure of a garbage transfer vehicle as the sanitation equipment.

[0064] Figure 2 This embodiment provides a schematic diagram of the structure of a vertical waste treatment transfer station.

[0065] Figure 3 This is a schematic diagram of the structure of the trash can provided in this embodiment, with the door in the closed state and the self-locking component in the locked state;

[0066] Figure 4 This is a schematic diagram of the structure of the trash can provided in this embodiment, with the door in the open state and the self-locking component in the unlocked state;

[0067] Figure 5 This is a schematic diagram of the hydraulic control system of the trash can provided in this embodiment;

[0068] Figure 6 A schematic diagram of another hydraulic control system for a trash can provided in this embodiment;

[0069] Figure 7 This is a schematic diagram of the hydraulic control system of another trash can provided in this embodiment;

[0070] Figure 8 This is a schematic diagram of another hydraulic control system for a trash can provided in this embodiment.

[0071] Icons: 100 - Hydraulic control system; 101 - First cylinder; 102 - Second cylinder; 103 - First oil circuit; 104 - Second oil circuit; 105 - First branch oil circuit; 106 - Second branch oil circuit; 107 - Third branch oil circuit; 108 - Fourth branch oil circuit; 109 - First sequence valve; 110 - Second sequence valve; 111 - First throttle valve; 112 - Second throttle valve; 113 - Hydraulic lock; 1 14-First balancing valve; 115-Second balancing valve; 116-Quick connector; 200-Garbage bin; 210-Garbage bin body; 220-Door; 221-Connecting rod; 222-Snap-fit ​​part; 230-Self-locking component; 231-Slot; 300-Sanitation equipment; 310-Equipment body; 311-Vehicle chassis; 312-Compression equipment; 320-Oil tank; 330-Oil pump; 340-Solenoid directional valve. Detailed Implementation

[0072] Vertical waste stations are equipped with corresponding waste bins to facilitate waste transfer with hooklift trucks. The bin doors are typically opened and closed by two sets of hydraulic cylinders, one driving the door panel and the other a self-locking mechanism. However, to open the door, the self-locking mechanism must be unlocked first before the door panel can open; similarly, to close the door, the door must be closed first before the self-locking mechanism locks. Current technology generally uses an electromagnetic reversing valve and a proximity switch for delayed action control. When closing the door, the door panel closes, the proximity switch senses whether it is closed, and only after confirmation does the corresponding locking cylinder drive the locking mechanism to lock after a delay. When opening the door, the locking mechanism opens first, the proximity switch senses whether it is open, and only after confirmation does the corresponding cylinder drive the door panel to open after a delay.

[0073] In existing technologies, hydraulic lines and electrical wires need to be installed in the garbage bin, and sequential control requires the integration of electronic control components and sensing elements. The structure and control are relatively complex, and a failure in electrical components or wiring can cause the garbage bin door to malfunction, thus affecting normal use.

[0074] To address the aforementioned problems, this utility model provides a hydraulic control system, a garbage bin, and sanitation equipment that can unlock the door before opening it and lock it before closing it without the need for sensors and electronic control. This avoids the need for wiring, sensor installation, and electronic control program setup, thereby saving costs and reducing failure rates, and improving the aforementioned technical issues.

[0075] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0076] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0077] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0078] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0079] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0080] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0081] The following detailed description of the overall structure, working principle, and technical effects of the hydraulic control system, garbage bin, and sanitation equipment provided by this utility model, through embodiments and in conjunction with the accompanying drawings, is a practical example.

[0082] Please refer to Figure 1 and Figure 2 This embodiment provides a sanitation equipment 300, which can be a garbage truck, a vertical garbage processing transfer station, or a horizontal garbage processing transfer station, etc., to realize the transfer or compression of garbage.

[0083] Please refer to Figures 1 to 7 In this embodiment, the sanitation equipment 300 includes an equipment body 310, an oil tank 320, an oil pump 330, a solenoid directional valve 340, and a garbage bin 200. The oil tank 320, oil pump 330, and solenoid directional valve 340 are disposed on the equipment body 310. The oil pump 330 is connected between the oil tank 320 and the solenoid directional valve 340, and the solenoid directional valve 340 is also connected to the oil tank 320. The garbage bin 200 is disposed on the equipment body 310, and the hydraulic control system 100 of the garbage bin 200 is connected to the solenoid directional valve 340 to provide power to the garbage bin 200.

[0084] Please refer to Figure 1 In one embodiment of this application, the sanitation equipment 300 is a garbage transfer vehicle, the equipment body 310 is the vehicle chassis 311 of the garbage transfer vehicle, and the garbage bin 200 is disposed on the vehicle chassis 311.

[0085] Please refer to Figure 2 In another embodiment of this application, the sanitation equipment 300 is a vertical garbage disposal transfer station, and the equipment body 310 is a compression device 312. The garbage bin 200 is disposed on the compression device 312. The compression device 312 moves and rotates with the garbage bin 200.

[0086] Please refer to Figure 3 and Figure 4 In this embodiment, the trash can 200 includes a trash can body 210, a door 220, a self-locking component 230, and a hydraulic control system 100. The door 220 is movably disposed in the opening of the trash can body 210. The self-locking component 230 is movably disposed in either the trash can body 210 or the door 220. The hydraulic control system 100 can drive the door 220 to open or close, and can also drive the self-locking component 230 to move so as to self-lock the door 220 after it is closed, and to release the self-locking component before it is opened. The self-locking component 230 can prevent the door 220 from being in a closed state even if the hydraulic control system 100 fails.

[0087] Please refer to Figure 3 and Figure 4 In this embodiment, the hydraulic control system 100 includes a first cylinder 101, a second cylinder 102, a first oil passage 103, a second oil passage 104, a first branch oil passage 105, a second branch oil passage 106, a third branch oil passage 107, a fourth branch oil passage 108, a first sequence valve 109, and a second sequence valve 110. One end of the first cylinder 101 is connected to the garbage bin body 210, and the other end is connected to the door body 220. The first cylinder 101 is used to drive the door body 220 to open or close. The second cylinder 102 is connected to a self-locking component 230, and the second cylinder 102 is used to drive the self-locking component 230 to move to self-lock or unlock the door body 220. The first oil passage 103 and the second oil passage 104 are connected to a solenoid directional valve 340, which allows the first oil passage 103 and the second oil passage 104 to selectively connect to the oil pump 330 and the oil tank 320. One end of the first branch oil passage 105 and the second branch oil passage 106 are both connected to the first oil passage 103. One end of the third branch oil passage 107 and the fourth branch oil passage 108 are both connected to the second oil passage 104. One end of the second branch oil passage 106 and the other end of the third branch oil passage 107 are connected to the rod chamber of the second cylinder 102, and the other end is connected to the rodless chamber of the second cylinder 102. One end of the first branch oil passage 105 and the other end of the fourth branch oil passage 108 are connected to the rod chamber of the first cylinder 101, and the other end is connected to the rodless chamber of the first cylinder 101. A first sequence valve 109 is disposed in the first branch oil passage 105. A second sequence valve 110 is disposed in the third branch oil passage 107.

[0088] This embodiment includes a first hydraulic cylinder 101 for opening or closing the door 220 and a second hydraulic cylinder 102 for driving the self-locking component 230 to lock or unlock the door 220. A first oil passage 103 and a second oil passage 104 for supplying and returning oil are also provided. The first hydraulic cylinder 101 is connected to the first oil passage 103 and the second oil passage 104 via a first branch oil passage 105 and a second branch oil passage 106. The second hydraulic cylinder 102 is connected to the first oil passage 103 and the second oil passage 104 via a third branch oil passage 107 and a fourth branch oil passage 108. A first sequence valve 109 is provided in the first branch oil passage 105, and a second sequence valve 110 is provided in the third branch oil passage 107. When the door is opened, the solenoid directional valve 340 supplies oil to the first oil passage 103 and returns oil to the second oil passage 104. Because the first branch oil circuit 105 is equipped with a first sequence valve 109, which will block the flow of hydraulic oil in the first branch oil circuit 105, the hydraulic oil will first flow through the second branch oil circuit 106 to the second cylinder 102 to drive the second cylinder 102 to act and unlock the self-locking component 230. After the second cylinder 102 completes the unlocking action, it will stop acting and provide back pressure to the second branch oil circuit 106 and the first oil circuit 103, causing the pressure in the second branch pipeline and the first oil circuit 103 to increase. When the pressure increases to exceed the opening pressure of the first sequence valve 109, the first sequence valve 109 will open, so that the hydraulic oil flows from the first branch oil circuit 105 to the first cylinder 101, thereby causing the first cylinder 101 to act and drive the door 220 to open. When the door is closed, the solenoid directional valve 340 supplies oil to the second oil circuit 104 and returns oil to the first oil circuit 103. Since the third branch oil circuit 107 is equipped with the second sequence valve 110, it will block the third branch oil circuit 107, so that the hydraulic oil will first flow through the fourth branch oil circuit 108 to the first oil cylinder 101 to drive the first oil cylinder 101 to close the door 220. After the door 220 is closed, the first oil cylinder 101 will provide back pressure to the fourth branch oil circuit 108 and the second oil circuit 104, causing the pressure of the fourth branch oil circuit and the second oil circuit 104 to increase. When the pressure increases to exceed the opening pressure of the second sequence valve 110, the second sequence valve 110 will open, allowing the hydraulic oil to flow from the third branch oil circuit 107 to the second oil cylinder 102 to drive the second oil cylinder 102 to drive the self-locking component 230 to lock the door 220. Overall, the hydraulic control system 100 can unlock the door before opening it and lock it before closing it without the need for sensors and electronic control. This avoids the need for wiring, sensor installation, and electronic control program setup, thus saving costs and reducing the failure rate.

[0089] Please refer to Figure 3 and Figure 4In this embodiment, two connecting rods 221 are hinged to each side of the door 220, and both connecting rods 221 are hinged to the garbage bin body 210. There are two first hydraulic cylinders 101, which are respectively located on both sides of the garbage bin body 210 and hinged to the connecting rods 221. The first hydraulic cylinders 101 can drive the connecting rods 221 to rotate, thereby causing the door 220 to flip open or close.

[0090] In this embodiment, the self-locking component 230 is movably disposed on the garbage bin body 210. One end of the second hydraulic cylinder 102 is connected to the garbage bin body 210, and the other end is connected to the self-locking component 230. The door body 220 is provided with a locking part 222. When the door body 220 is in the closed position, the second hydraulic cylinder 102 can drive the self-locking component 230 to move and lock into the locking part 222.

[0091] In this embodiment, the self-locking component 230 is installed on the garbage bin body 210, so that the self-locking component 230 and the second hydraulic cylinder 102 will not move with the opening and closing of the door 220, which makes it easier to arrange hydraulic pipelines.

[0092] Furthermore, the self-locking component 230 is a locking hook, with its middle section hinged to the garbage bin body 210. The front end of the locking hook has a slot 231 corresponding to the locking part 222, and the rear end of the locking hook is connected to a second hydraulic cylinder. The second hydraulic cylinder can drive the locking hook to rotate, thereby engaging with the locking part 222. The self-locking mechanism will disengage from the locking part 222 and release the self-locking mechanism.

[0093] Furthermore, there are at least two second hydraulic cylinders 102 and self-locking components 230, which are respectively arranged on both sides of the garbage bin body 210.

[0094] Of course, in some other embodiments of this application, the self-locking member 230 and the second hydraulic cylinder 102 may also be provided on the door body 220, while the locking part 222 may be provided on the garbage bin body 210.

[0095] Please refer to Figure 5 In this embodiment, the first branch oil passage 105 is connected to the rodless chamber of the first oil cylinder 101. The second branch oil passage 106 is connected to the rodless chamber of the second oil cylinder 102. The third branch oil passage 107 is connected to the rod chamber of the second oil cylinder 102. The fourth branch oil passage 108 is connected to the rod chamber of the first oil cylinder 101. The extension of the first oil cylinder 101 can drive the door 220 to open. The retraction of the first oil cylinder 101 can drive the door 220 to close. The extension of the second oil cylinder 102 can drive the self-locking member 230 to release the self-locking mechanism of the door 220. The retraction of the second oil cylinder 102 can drive the self-locking member 230 to lock the door 220.

[0096] In another embodiment, please refer to Figure 6The first branch oil passage 105 is connected to the rod-side chamber of the first oil cylinder 101. The second branch oil passage 106 is connected to the rodless chamber of the second oil cylinder 102; the third branch oil passage 107 is connected to the rod-side chamber of the second oil cylinder 102; and the fourth branch oil passage 108 is connected to the rodless chamber of the first oil cylinder 101. Please refer to... Figure 5 and Figure 6 The first hydraulic cylinder 101 can open the door 220 by shortening it, and can close the door 220 by extending it. The second hydraulic cylinder 102 can release the self-locking component 230 from locking the door 220 by extending it, and can lock the door 220 by shortening it.

[0097] In another embodiment, please refer to Figure 7 The first branch oil circuit 105 is connected to the rodless chamber of the first oil cylinder 101; the second branch oil circuit 106 is connected to the rod chamber of the second oil cylinder 102; the third branch oil circuit 107 is connected to the rodless chamber of the second oil cylinder 102; and the fourth branch oil circuit 108 is connected to the rod chamber of the first oil cylinder 101. The extension of the first oil cylinder 101 can drive the door 220 to open, and the retraction of the first oil cylinder 101 can drive the door 220 to close. The retraction of the second oil cylinder 102 can drive the self-locking element 230 to release the self-locking mechanism on the door 220, and the extension of the second oil cylinder 102 can drive the self-locking element 230 to lock the door.

[0098] In another embodiment, please refer to Figure 8 The first branch oil circuit 105 is connected to the rod-side chamber of the first oil cylinder 101; the second branch oil circuit 106 is connected to the rod-side chamber of the second oil cylinder 102; the third branch oil circuit 107 is connected to the rodless chamber of the second oil cylinder 102; and the fourth branch oil circuit 108 is connected to the rodless chamber of the first oil cylinder 101. The first oil cylinder 101, when shortened, can drive the door 220 to open; when extended, it can drive the door 220 to close. The second oil cylinder 102, when shortened, can drive the self-locking element 230 to release the self-locking mechanism on the door 220; when extended, it can drive the self-locking element 230 to lock the door 220.

[0099] Please combine Figures 5 to 8 In summary, the connection between the first branch oil circuit 105 and the fourth branch oil circuit 108 and the rod-side or rodless chamber of the first oil cylinder 101 can be adaptively adjusted according to the opening and closing method of the door 220 and the arrangement of the first oil cylinder 101. Similarly, the connection between the second branch oil circuit 106 and the third branch oil circuit 107 and the rod-side or rodless chamber of the second oil cylinder 102 can be adaptively adjusted according to the opening and closing method of the self-locking component 230 and the arrangement of the second oil cylinder 102. The key is to ensure that when opening the door, the self-locking component 230 unlocks the door 220 first, followed by the opening of the door 220. Conversely, when closing the door, the door 220 closes first, followed by the self-locking component 230 locks the door 220.

[0100] Please refer to Figures 5-8 In this embodiment, the pilot inlet of the first sequence valve 109 is connected to the fourth branch oil passage 108. The pilot inlet of the second sequence valve 110 is connected to the second branch oil passage 106.

[0101] In this embodiment, the pilot inlet of the first sequence valve 109 is connected to the fourth branch oil circuit 108. This allows the oil pressure and spring pressure of the fourth branch oil circuit 108 to be applied simultaneously to the valve core of the first sequence valve 109, mitigating the problem of sequence disorder caused by abnormal opening of the first sequence valve 109 due to sudden pressure changes in the first oil circuit 103. Similarly, the pilot inlet of the second sequence valve 110 is connected to the second branch oil circuit 106. This allows the oil pressure and spring pressure of the second branch oil circuit 106 to be applied simultaneously to the valve core of the second sequence valve 110, mitigating the sequence disorder caused by abnormal opening of the second sequence valve 110 due to sudden pressure changes in the second oil circuit 104.

[0102] For example, when performing the door opening action, hydraulic oil flows from the first oil passage 103 to the first branch oil passage 105 and the second branch oil passage 106. Since the first branch oil passage 105 is equipped with a first sequence valve 109, the hydraulic oil will flow along the second branch oil passage 106 to push the rodless chamber of the second cylinder 102, and will flow to the pilot port of the second sequence valve 110. Together with the spring of the second sequence valve 110, it will apply pressure to the valve core of the second sequence valve 110, so as to avoid the problem that the return oil pressure of the second oil passage 104 will increase due to blockage or other reasons, which will cause the second sequence valve 110 to open.

[0103] When the door is closed, hydraulic oil flows from the second oil circuit 104 to the third branch oil circuit 107 and the fourth branch oil circuit 108. Since the third branch oil circuit 107 is equipped with a second sequence valve 110, the hydraulic oil will flow along the fourth branch oil circuit 108 to push the rodless chamber of the first cylinder 101, and will flow to the pilot port of the first sequence valve 109. Together with the spring of the first sequence valve 109, it will apply pressure to the valve core of the second sequence valve 110, so as to avoid the problem that the return oil pressure of the first oil circuit 103 will increase due to blockage or other reasons, which will cause the first sequence valve 109 to open.

[0104] Please refer to Figures 5-8 In this embodiment, the check valve of the first sequence valve 109 is unidirectionally open when hydraulic oil flows from the first branch oil passage 105 to the first oil passage 103. The check valve of the second sequence valve 110 is unidirectionally open when hydraulic oil flows from the third branch oil passage 107 to the second oil passage 104.

[0105] This embodiment enables the check valve of the first sequence valve 109 to be unidirectionally open when hydraulic oil flows from the first branch oil passage 105 to the first oil passage 103, thereby facilitating the return of oil from the first branch oil passage 105. This embodiment also enables the check valve of the second sequence valve 110 to be unidirectionally open when hydraulic oil flows from the third branch oil passage 107 to the second oil passage 104, thereby facilitating the return of oil from the third branch oil passage 107.

[0106] It should be noted that the opening pressure of the first sequence valve 109 and the opening pressure of the second sequence valve 110 can be adjusted according to the corresponding load to avoid the problem of mis-sequence.

[0107] Please refer to Figures 5-8 In this embodiment, the first oil passage 103 is provided with a first throttle valve 111, and the second oil passage 104 is provided with a second throttle valve 112. The one-way valve of the first throttle valve 111 can be opened unidirectionally when the first oil passage 103 returns oil to the outside, and the one-way valve of the second throttle valve 112 can be opened unidirectionally when the second oil passage 104 returns oil to the outside.

[0108] By setting the first throttle valve 111, the oil flow rate in the first oil circuit 103 can be controlled, thereby controlling the movement speed of the first cylinder 101 and the second cylinder 102. At the same time, the first throttle valve 111 adjusts the return oil back pressure of the first oil circuit 103. By setting the second throttle valve 112, the oil flow rate in the second oil circuit 104 can be controlled, thereby controlling the movement speed of the first cylinder 101 and the second cylinder 102. At the same time, the second throttle valve 112 adjusts the return oil back pressure of the second oil circuit 104.

[0109] In this embodiment, both the first throttle valve 111 and the second throttle valve 112 are adjustable flow valves, so the flow rate and back pressure can be set according to requirements.

[0110] In this embodiment, both the second branch oil circuit 106 and the third branch oil circuit 107 are equipped with hydraulic locks 113.

[0111] This implementation is equipped with hydraulic locks 113 in both the second branch oil circuit 106 and the third branch oil circuit 107. When the hydraulic system stops supplying oil or the oil pump 330 is unloaded, these locks prevent the piston rod of the second oil cylinder 102 from moving due to external force, thus maintaining the load position fixed. They also prevent external force from driving the second oil cylinder 102 to move, thereby preventing misalignment.

[0112] Please refer to Figures 5-8In this embodiment, a first balance valve 114 is provided in the first branch oil passage 105 between the first sequence valve 109 and the first oil cylinder 101. A second balance valve 115 is provided in the fourth branch oil passage 108 between the first sequence valve 109 and the first oil cylinder 101. The pilot port of the first balance valve 114 is connected to the fourth branch oil passage 108. The pilot port of the second balance valve 115 is connected to the first branch oil passage 105. Both the check valve of the first balance valve 114 and the check valve of the second balance valve 115 can be opened when the first oil cylinder 101 returns oil outward.

[0113] In this embodiment, the first balance valve 114 and the second balance valve 115 are provided to prevent the garbage bin 200 from falling due to its own weight when the horizontal operation door 220 is in the open state. At the same time, it also prevents the door 220 from falling if the hydraulic pipeline bursts when the door is opened.

[0114] Please refer to Figures 5-8 In this embodiment, both the first oil passage 103 and the second oil passage 104 are equipped with quick-connect couplings 116. The quick-connect couplings 116 enable quick connection and disconnection.

[0115] It should be noted that the number of quick-connect couplings 116 can be set according to the compatible equipment. In this embodiment, both the first oil circuit 103 and the second oil circuit 104 are equipped with two different specifications of quick-connect couplings 116, so that the first oil circuit 103 and the second oil circuit 104 can be quickly connected and disconnected from the electromagnetic reversing valve 340 of the garbage transfer vehicle or the electromagnetic reversing valve 340 of the vertical garbage treatment transfer station.

[0116] Furthermore, the first oil circuit 103 is equipped with two different sizes of quick-change female connectors at its end, which can be connected to the quick-change male connector of the solenoid directional valve 340. The second oil circuit 104 is also equipped with two different sizes of quick-change male connectors, which can be connected to the quick-change female connector of the solenoid directional valve 340. This design also prevents mistaken connection and avoids incorrect connection to the solenoid directional valve 340.

[0117] Secondly, in this embodiment, both the first oil passage 103 and the second oil passage 104 are provided with pressure detection oil passages.

[0118] Please refer to Figures 1 to 8In summary, this embodiment includes a first hydraulic cylinder 101 for driving the door 220 to open or close, and a second hydraulic cylinder 102 for driving the self-locking component 230 to self-lock or unlock the door 220. A first oil passage 103 and a second oil passage 104 for oil supply and return are also provided. The first hydraulic cylinder 101 is connected to the first oil passage 103 and the second oil passage 104 via a first branch oil passage 105 and a second branch oil passage 106. The second hydraulic cylinder 102 is connected to the first oil passage 103 and the second oil passage 104 via a third branch oil passage 107 and a fourth branch oil passage 108. A first sequence valve 109 is provided in the first branch oil passage 105, and a second sequence valve 110 is provided in the third branch oil passage 107. When performing the door opening action: the first oil circuit 103 supplies oil, while the second oil circuit 104 returns oil. Since the first branch oil circuit 105 is equipped with a first sequence valve 109, it will block the flow of hydraulic oil in the first branch oil circuit 105. As a result, the hydraulic oil will first flow through the second branch oil circuit 106 to the second oil cylinder 102 to drive the second oil cylinder 102 to act and unlock the self-locking component 230. After the second oil cylinder 102 completes the unlocking action, it will stop acting and provide back pressure to the second branch oil circuit 106 and the first oil circuit 103, causing the pressure in the second branch oil circuit and the first oil circuit 103 to increase. When the pressure increases to exceed the opening pressure of the first sequence valve 109, the first sequence valve 109 will open, allowing the hydraulic oil to flow from the first branch oil circuit 105 to the first oil cylinder 101, thereby causing the first oil cylinder 101 to act and drive the door body 220 to open. When the door is closed, the second oil circuit 104 supplies oil, while the first oil circuit 103 returns oil. Since the third branch oil circuit 107 is equipped with the second sequence valve 110, it will block the third branch oil circuit 107, so that the hydraulic oil will first flow through the fourth branch oil circuit 108 to the first oil cylinder 101 to drive the first oil cylinder 101 to close the door 220. After the door 220 is closed, the first oil cylinder 101 will provide back pressure to the fourth branch oil circuit 108 and the second oil circuit 104, causing the pressure of the fourth branch oil circuit and the second oil circuit 104 to increase. When the pressure increases to exceed the opening pressure of the second sequence valve 110, the second sequence valve 110 will open, allowing the hydraulic oil to flow from the third branch oil circuit 107 to the second oil cylinder 102 to drive the second oil cylinder 102 to drive the self-locking component 230 to lock the door 220. Overall, the hydraulic control system 100 can unlock the door before opening it and lock it before closing it without the need for sensors and electronic control. This avoids the need for wiring, sensor installation, and electronic control program setup, thus saving costs and reducing the failure rate.

[0119] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A hydraulic control system characterized by, The hydraulic control system comprises: a first oil cylinder (101) for driving a door body (220) to open or close; a second oil cylinder (102) for driving a self-locking part (230) to move to self-lock or release the self-locking of the door body (220); a first oil path (103) and a second oil path (104), one of which is used for oil supply and the other is used for oil return; a first branch oil path (105) and a second branch oil path (106), one end of each of which is connected to the first oil path (103); a third branch oil path (107) and a fourth branch oil path (108), one end of each of which is connected to the second oil path (104); one of the other end of the second branch oil path (106) and the other end of the third branch oil path (107) is connected to the rod cavity of the second oil cylinder (102), and the other is connected to the non-rod cavity of the second oil cylinder (102); one of the other end of the first branch oil path (105) and the other end of the fourth branch oil path (108) is connected to the rod cavity of the first oil cylinder (101), and the other is connected to the non-rod cavity of the first oil cylinder (101); a first sequence valve (109) arranged in the first branch oil path (105); a second sequence valve (110) arranged in the third branch oil path (107).

2. The hydraulic control system of claim 1, wherein, The first branch oil path (105) is connected to the non-rod cavity of the first oil cylinder (101); the second branch oil path (106) is connected to the non-rod cavity of the second oil cylinder (102); the third branch oil path (107) is connected to the rod cavity of the second oil cylinder (102); and the fourth branch oil path (108) is connected to the rod cavity of the first oil cylinder (101); Or, The first branch oil path (105) is connected to the rod cavity of the first oil cylinder (101); the second branch oil path (106) is connected to the non-rod cavity of the second oil cylinder (102); the third branch oil path (107) is connected to the rod cavity of the second oil cylinder (102); and the fourth branch oil path (108) is connected to the non-rod cavity of the first oil cylinder (101); Or, The first branch oil path (105) is connected to the non-rod cavity of the first oil cylinder (101); the second branch oil path (106) is connected to the rod cavity of the second oil cylinder (102); the third branch oil path (107) is connected to the non-rod cavity of the second oil cylinder (102); and the fourth branch oil path (108) is connected to the rod cavity of the first oil cylinder (101); Or, The first branch oil passage (105) is connected with the rod cavity of the first oil cylinder (101); the second branch oil passage (106) is connected with the rod cavity of the second oil cylinder (102); the third branch oil passage (107) is connected with the rodless cavity of the second oil cylinder (102); and the fourth branch oil passage (108) is connected with the rodless cavity of the first oil cylinder (101).

3. The hydraulic control system of claim 1, wherein, The pilot inlet of the first sequence valve (109) is communicated with the fourth branch oil passage (108); The pilot inlet of the second sequence valve (110) is communicated with the second branch oil passage (106).

4. The hydraulic control system of claim 1, wherein, The check valve of the first sequence valve (109) can be unidirectionally conducted when the hydraulic oil flows from the first branch oil passage (105) to the first oil passage (103); The check valve of the second sequence valve (110) can be unidirectionally conducted when the hydraulic oil flows from the third branch oil passage (107) to the second oil passage (104).

5. The hydraulic control system of claim 1, wherein, The first oil passage (103) is provided with a first throttle valve (111), and the second oil passage (104) is provided with a second throttle valve (112); the check valve of the first throttle valve (111) can be unidirectionally conducted when the first oil passage (103) returns oil; and the check valve of the second throttle valve (112) can be unidirectionally conducted when the second oil passage (104) returns oil.

6. The hydraulic control system of claim 1, wherein, The second branch oil passage (106) and the third branch oil passage (107) are both provided with a hydraulic lock (113); And / or, The first oil passage (103) and the second oil passage (104) are both provided with a quick connector (116).

7. The hydraulic control system of claim 1, wherein, The first branch oil passage (105) is provided with a first balance valve (114) between the first sequence valve (109) and the first oil cylinder (101); The fourth branch oil passage (108) is provided with a second balance valve (115) between the first sequence valve (109) and the first oil cylinder (101); The pilot inlet of the first balance valve (114) is connected to the fourth branch oil passage (108); The pilot inlet of the second balance valve (115) is connected to the first branch oil passage (105); The check valve of the first balance valve (114) and the check valve of the second balance valve (115) can be conducted when the first oil cylinder (101) returns oil.

8. A waste bin, characterized in that The hydraulic control system comprises a garbage can body (210), a door body (220), a self-locking piece (230), and the hydraulic control system in any one of claims 1-7. The door body (220) is movably arranged at the opening of the garbage can body (210), one end of the first oil cylinder (101) is connected to the garbage can body (210), and the other end is connected to the door body (220) to drive the door body (220) to open or close; The self-locking part (230) is movably arranged on the garbage can body (210) or the door body (220), the second oil cylinder (102) is connected with the self-locking part (230), and the second oil cylinder (102) can drive the self-locking part (230) to move to self-lock or release the self-locking of the door body (220).

9. The garbage can according to claim 8, characterized in that, The first branch oil way (105) is connected with the rodless cavity of the first oil cylinder (101), the second branch oil way (106) is connected with the rodless cavity of the second oil cylinder (102), the third branch oil way (107) is connected with the rod cavity of the second oil cylinder (102), and the fourth branch oil way (108) is connected with the rod cavity of the first oil cylinder (101); the first oil cylinder (101) is elongated to drive the door body (220) to open, and the first oil cylinder (101) is shortened to drive the door body (220) to close; the second oil cylinder (102) is elongated to drive the self-locking part (230) to release the self-locking of the door body (220), and the second oil cylinder (102) is shortened to drive the self-locking part (230) to lock the door body (220); Or, The first branch oil way (105) is connected with the rodless cavity of the first oil cylinder (101); the second branch oil way (106) is connected with the rodless cavity of the second oil cylinder (102); the third branch oil way (107) is connected with the rod cavity of the second oil cylinder (102); and the fourth branch oil way (108) is connected with the rod cavity of the first oil cylinder (101); the first oil cylinder (101) is shortened to drive the door body (220) to open, and the first oil cylinder (101) is elongated to drive the door body (220) to close; the second oil cylinder (102) is elongated to drive the self-locking part (230) to release the self-locking of the door body (220), and the second oil cylinder (102) is shortened to drive the self-locking part (230) to lock the door body (220); Or, The first branch oil way (105) is connected with the rodless cavity of the first oil cylinder (101); the second branch oil way (106) is connected with the rodless cavity of the second oil cylinder (102); the third branch oil way (107) is connected with the rod cavity of the second oil cylinder (102); and the fourth branch oil way (108) is connected with the rod cavity of the first oil cylinder (101); the first oil cylinder (101) is shortened to drive the door body (220) to open, and the first oil cylinder (101) is elongated to drive the door body (220) to close; the second oil cylinder (102) is elongated to drive the self-locking part (230) to release the self-locking of the door body (220), and the second oil cylinder (102) is shortened to drive the self-locking part (230) to lock the door body (220); Or, The first branch oil passage (105) is connected with the rod cavity of the first oil cylinder (101); the second branch oil passage (106) is connected with the rod cavity of the second oil cylinder (102); the third branch oil passage (107) is connected with the rodless cavity of the second oil cylinder (102); the fourth branch oil passage (108) is connected with the rodless cavity of the first oil cylinder (101); the shortening of the first oil cylinder (101) can drive the door body (220) to open, and the elongation of the first oil cylinder (101) can drive the door body (220) to close; the shortening of the second oil cylinder (102) can drive the self-locking part (230) to release the self-locking of the door body (220), and the elongation of the second oil cylinder (102) can drive the self-locking part (230) to lock the door body (220).

10. A grounds keeping device characterized by, The device body (310), the oil tank (320), the oil pump (330), the electromagnetic reversing valve (340) and the garbage can of any one of claims 8-9 are included; The oil tank (320), the oil pump (330) and the electromagnetic reversing valve (340) are arranged in the device body (310); the oil pump (330) is connected between the oil tank (320) and the electromagnetic reversing valve (340), and the electromagnetic reversing valve (340) is also connected to the oil tank (320); the first oil passage (103) and the second oil passage (104) are connected to the electromagnetic reversing valve (340); the electromagnetic reversing valve (340) can selectively communicate the first oil passage (103) and the second oil passage (104) with the oil pump (330) and the oil tank (320).

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