Discharging hydraulic system of movable garbage compression equipment

Abstract

The utility model provides a discharging hydraulic system of movable garbage compression equipment. The discharging hydraulic system comprises a first connector, a second connector, a tail door locking oil cylinder, a push shovel oil cylinder, a first oil way, a second oil way, a first connecting oil way, a second connecting oil way, a control valve and a sequence valve. The first connector and the second connector are used for being connected with external oil source equipment. A rodless cavity of the tail door locking oil cylinder is connected with the first connector through a first oil way, and a rod cavity of the tail door locking oil cylinder is connected with the second connector through a second oil way. A rodless cavity of the push shovel oil cylinder is connected with the first oil way through a first connecting oil way, and a rod cavity of the push shovel oil cylinder is in non-on-off connection with the second oil way through a second connecting oil way. The control valve is arranged on the first connecting oil way and used for controlling connection and disconnection of the first connecting oil way. The sequence valve is arranged on the second oil way and used for controlling the sequence of oil flowing into the rod cavity of the tail door locking oil cylinder and the rod cavity of the push shovel oil cylinder. Compared with the prior art, operation can be simplified, and cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage processing equipment, in particular to a discharging hydraulic system of mobile garbage compression equipment. Background Art

[0002] With the rapid development of urban construction and the gradual improvement of living standards, the speed of domestic garbage generation is extremely fast. The traditional garbage disposal method of storing garbage in garbage bins and then transporting it away by garbage trucks often cannot meet the needs of environmental protection. Therefore, in the field of garbage disposal, more and more mobile garbage compression equipment with compression function in the form of transfer stations is used. This equipment can reduce the number of garbage collection and transportation through fully automated operation, is not easy to pollute the environment again, and saves garbage collection and transportation costs.

[0003] The mobile garbage compression equipment integrates "sealing, deodorization, compression and storage" in one, achieving cleanliness, beauty, safety, efficiency and environmental protection. It embodies today's new fashion and new concepts of environmental protection and improves the overall image and beauty of urban areas, communities and other places.

[0004] At present, when unloading at a mobile garbage station, the quick-connect connector of the power source pipeline of the hook arm truck is connected to the quick-connect connector of the tailgate valve group of the mobile box to control the extension and retraction of the tailgate locking cylinder. The cylinder is extended to open the tailgate hook, and the hook arm truck can directly dump and unload. After unloading, it returns to its original position, and then the cylinder is retracted to close the tailgate hook to complete the entire unloading process. However, in a low temperature environment, when the garbage is frozen or large pieces of garbage cause jamming, dumping and unloading will be very difficult, greatly reducing the efficiency of garbage removal. At present, there is a forced unloading function on the market, which leads the tailgate hook oil circuit to the push shovel cylinder, and then through control components such as ball valves and sequence valves, the power source pressure oil of the hook arm truck enters the push shovel cylinder to achieve forced unloading with a push shovel.

[0005] However, the prior art controls the oil circuit between the shovel oil cylinder and the tailgate locking oil cylinder through two ball valves and two sequence valves, which is complicated to operate and use, and requires adjusting the pressure of the two sequence valves, and then opening the two ball valves at the same time when in use. Utility Model Content

[0006] In view of the above technical problems, the utility model provides a unloading hydraulic system for mobile garbage compression equipment. When in use, only one control valve needs to be opened. For further adjustment, only one sequence valve needs to be adjusted. The operation is easier, the structure is simpler, and the cost is lower.

[0007] A discharging hydraulic system of a mobile garbage compression device comprises a first joint, a second joint, a tailgate locking cylinder, a push shovel cylinder, a first oil circuit, a second oil circuit, a first connecting oil circuit, a second connecting oil circuit, a control valve, and a sequence valve;

[0008] The first connector and the second connector are used to connect to external oil source equipment;

[0009] The rodless chamber of the tailgate locking oil cylinder is connected to the first joint through the first oil circuit, and the rod chamber is connected to the second joint through the second oil circuit;

[0010] The rodless chamber of the push shovel oil cylinder is connected to the first oil circuit via the first connecting oil circuit, and the rod chamber is connected to the second oil circuit without disconnection via the second connecting oil circuit;

[0011] The control valve is arranged on the first connecting oil circuit to control the on-off of the first connecting oil circuit;

[0012] The sequence valve is arranged on the second oil circuit to control the order in which the oil flows into the rod chamber of the tailgate locking cylinder and the rod chamber of the push shovel cylinder.

[0013] Preferably, the rodless chamber of the push-blade oil cylinder is connected to the first oil circuit without a sequence valve through the first connecting oil circuit.

[0014] Preferably, the sequence valve is a one-way sequence valve with adjustable pressure, the direction of which is to allow oil to flow from the inside of the tailgate locking cylinder to the outside without pressure, and to allow oil to flow from the outside to the inside of the tailgate locking cylinder with pressure;

[0015] A connection node between the second connecting oil circuit and the second oil circuit is located on a side of the sequence valve close to the second joint.

[0016] Preferably, a first hydraulic lock is provided on the inlet and outlet oil circuits of the tailgate locking cylinder.

[0017] Preferably, the first hydraulic lock is arranged in the first oil circuit and the second oil circuit to limit the outflow of oil from the tailgate locking cylinder.

[0018] Preferably, in the second oil circuit, the first hydraulic lock is located at the rear side of the sequence valve.

[0019] Preferably, the rod chamber of the push shovel oil cylinder is connected to the push shovel retreat main oil circuit of the mobile station, and the second connecting oil circuit is connected to the rod chamber of the push shovel oil cylinder through the push shovel retreat main oil circuit of the mobile station;

[0020] The rodless chamber of the push blade oil cylinder is connected to a main oil circuit for extending the push blade of a mobile station, and the first connecting oil circuit is connected to the rodless chamber of the push blade oil cylinder through the main oil circuit for extending the push blade of the mobile station.

[0021] Preferably, a hydraulically controlled one-way valve is provided on the second connecting oil circuit, and the hydraulically controlled one-way valve is used to limit the oil in the main oil circuit of the mobile station bulldozer to flow into the second oil circuit;

[0022] The control oil circuit of the hydraulically controlled one-way valve is located on the first connecting oil circuit and at the front side of the control valve.

[0023] Preferably, a second hydraulic lock is provided on the inlet and outlet oil lines of the bulldozer oil cylinder.

[0024] Preferably, it also includes a third hydraulic lock provided on the main oil circuit for retracting the push shovel of the mobile station and the main oil circuit for extending the push shovel of the mobile station;

[0025] The connection node between the second connecting oil circuit and the main oil circuit for retreating the push blade of the mobile station is located on a side of the third hydraulic lock close to the push blade cylinder;

[0026] The connection node between the first connecting oil circuit and the main oil circuit for extending the push blade of the mobile station is located on a side of the third hydraulic lock close to the push blade cylinder.

[0027] Compared with the prior art, the unloading hydraulic system of the mobile garbage compression equipment provided by the utility model includes a first joint, a second joint, a tailgate locking cylinder, a push shovel cylinder, a first oil circuit, a second oil circuit, a first connecting oil circuit, a second connecting oil circuit, a control valve, and a sequence valve; the first joint and the second joint are used to connect with an external oil source device; the rodless chamber of the tailgate locking cylinder is connected to the first joint through the first oil circuit, and the rod chamber is connected to the second joint through the second oil circuit; the rodless chamber of the push shovel cylinder is connected to the first oil circuit through the first connecting oil circuit, and the rod chamber is connected to the second oil circuit without on-off connection through the second connecting oil circuit; the control valve is arranged on the first connecting oil circuit to control the on-off of the first connecting oil circuit; the sequence valve is arranged on the second oil circuit to control the order of oil flowing into the rod chamber of the tailgate locking cylinder and the rod chamber of the push shovel cylinder. When operating the unloading hydraulic system of the mobile garbage compression equipment, only one control valve needs to be opened, which is simpler to operate, simpler in overall structure, and lower in cost.

[0028] Furthermore, during adjustment, only one sequence valve needs to be adjusted, making the adjustment easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1A schematic structural diagram of a discharge hydraulic system of a mobile garbage compression device provided in an embodiment. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] It should be noted that when a component is referred to as being "fixed on", "installed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is "connected" to another component, or a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0033] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0035] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0036] The utility model provides a discharge hydraulic system of a mobile garbage compression device, which includes a first joint, a second joint, a tailgate locking cylinder, a push shovel cylinder, a first oil circuit, a second oil circuit, a first connecting oil circuit, a second connecting oil circuit, a control valve, and a sequence valve; the first joint and the second joint are used to connect with an external oil source device; the rodless chamber of the tailgate locking cylinder is connected to the first joint through the first oil circuit, and the rod chamber is connected to the second joint through the second oil circuit; the rodless chamber of the push shovel cylinder is connected to the first oil circuit through the first connecting oil circuit, and the rod chamber is connected to the second oil circuit without on-off connection through the second connecting oil circuit; the control valve is arranged on the first connecting oil circuit to control the on-off of the first connecting oil circuit; the sequence valve is arranged on the second oil circuit to control the order of oil flowing into the rod chamber of the tailgate locking cylinder and the rod chamber of the push shovel cylinder. When operating the discharge hydraulic system of the mobile garbage compression device, only one control valve needs to be opened, which is simpler to operate, simpler in overall structure, and lower in cost.

[0037] Please refer to Figure 1 In one embodiment, a discharging hydraulic system 100 of a mobile garbage compression device is provided, which can be applied to a garbage compression box of the mobile garbage compression device. The discharging hydraulic system 100 of the mobile garbage compression device includes a first joint 1, a second joint 2, a tailgate locking cylinder 3, a push shovel cylinder 4, a first oil circuit 5, a second oil circuit 6, a first connecting oil circuit 7, a second connecting oil circuit 8, a control valve 9, and a sequence valve 10.

[0038] The first connector 1 and the second connector 2 are used to connect to an external oil source device. Specifically, in one embodiment, the external oil source device can be a main oil circuit of a hook-arm truck, so that when the first connector 1 and the second connector 2 are connected to the main oil circuit of the hook-arm truck, the hydraulic source on the hook-arm truck can provide oil to the unloading hydraulic system 100 of the mobile garbage compression device. For example, the first connector 1 is used to connect to the first main oil circuit 101 of the hook-arm truck, and the second connector 2 is used to connect to the second main oil circuit 102 of the hook-arm truck.

[0039] The rodless chamber of the tailgate locking cylinder 3 is connected to the first joint 1 through the first oil circuit 5, and the rod chamber is connected to the second joint 2 through the second oil circuit 6. The rodless chamber of the push shovel cylinder 4 is connected to the first oil circuit 5 through the first connecting oil circuit 7, and the rod chamber is connected to the second oil circuit 6 through the second connecting oil circuit 8 without an on-off connection. Among them, the rod chamber of the push shovel cylinder 4 is connected to the second oil circuit 6 through the second connecting oil circuit 8 without an on-off connection means that: no control valve that can control the on-off of the oil circuit is set on the second connecting oil circuit 8. In one embodiment, the tailgate locking cylinder 3 can be installed on the tailgate of a garbage compression box, and the push shovel cylinder 4 can be installed in the garbage compression box.

[0040] The control valve 9 is disposed on the first connecting oil circuit 7 to control the on-off of the first connecting oil circuit 7, thereby realizing arbitrary switching between the ice-breaking mode and the normal mode.

[0041] The sequence valve 10 is provided on the second oil circuit 6 to control the order in which the oil flows into the rod chamber of the tailgate locking oil cylinder 3 and the rod chamber of the push shovel oil cylinder 4. That is, after the oil flows into the second oil circuit 6, the sequence valve 10 can control the order in which the oil flows into the tailgate locking oil cylinder 3 and the push shovel oil cylinder 4, thereby controlling the contraction order of the tailgate locking oil cylinder 3 and the push shovel oil cylinder 4.

[0042] It is understandable that in the prior art, two ball valves are provided in the oil circuit between the tailgate locking cylinder and the push shovel cylinder. When in use, the two ball valves need to be opened at the same time, and the overall operation process is cumbersome.

[0043] In this embodiment, no control valve is provided on the second connecting oil circuit 8, and only the control valve 9 is provided on the first connecting oil circuit 7. When in use, only the control valve 9 needs to be opened, which is easier to operate, simpler in structure, and lower in cost.

[0044] Preferably, in one embodiment, the rodless chamber of the push shovel oil cylinder 4 is connected to the first oil circuit 5 through the first connecting oil circuit 7 without a sequence valve. That is, the first connecting oil circuit 7 is not provided with a sequence valve. It can be understood that in the unloading hydraulic system of the prior art, two sequence valves are provided in the oil circuit between the tailgate locking cylinder and the push shovel oil cylinder. When the unloading hydraulic system in the prior art is used, it is first necessary to debug the pressure of the two sequence valves to 15MPa, and then realize: docking the power source of the hook arm vehicle-opening the two ball valves at the same time-opening the hook-pushing the push shovel-pushing the push shovel-closing the hook-closing the ball valve for forced unloading. The implementation of the scheme is relatively cumbersome, and the pressure of the two sequence valves needs to be debugged, and then the two ball valves need to be opened at the same time when in use. In this embodiment, only one sequence valve needs to be adjusted, and only one control valve needs to be opened when in use, which is easier to operate, simpler in structure, and lower in cost. When the unloading hydraulic system 100 of the mobile garbage compression equipment provided in this embodiment is used: first, the sequence valve 10 can be debugged, and then the whole action is realized: the hook arm vehicle pipeline is connected - the tailgate locking cylinder drives the hook to open - the control valve is opened - the push shovel cylinder drives the push shovel to push the material - the hook arm vehicle pipeline changes direction - the push shovel cylinder drives the push shovel to retreat - the tailgate locking cylinder drives the hook to close - close the control valve. That is to say, in this embodiment, when the oil is fed in, the tailgate locking cylinder 3 can be allowed to open the hook first, and then the control valve 9 can be opened to control the flow order of the oil, thereby reducing the setting of one sequence valve. The connection node between the second connecting oil circuit 8 and the second oil circuit 6 is located on the side of the sequence valve 10 close to the second joint 2.

[0045] Specifically, in one embodiment, no control valve is set on the pipeline between the rod chamber of the tailgate locking cylinder 3 and the rod chamber of the push shovel cylinder 4, and no sequence valve is set on the pipeline between the rodless chamber of the tailgate locking cylinder 3 and the rodless chamber of the push shovel cylinder 4.

[0046] Preferably, in one embodiment, the sequence valve 10 is a one-way sequence valve with adjustable pressure, and the direction is to allow the oil to flow from the inside of the tailgate locking cylinder 3 to the outside without pressure, and to allow the oil to flow from the outside to the inside of the tailgate locking cylinder 3 with pressure. The connection node between the second connecting oil circuit 8 and the second oil circuit 6 is located on the side of the sequence valve 10 close to the second joint 2. When in use, the sequence valve 10 can be adjusted to 14MPa first, so as to ensure that the shovel oil cylinder 4 retreats first and the tailgate locking cylinder 3 retreats later.

[0047] Preferably, in one embodiment, a first hydraulic lock 11 is provided on the oil inlet and outlet passages of the tailgate locking oil cylinder 3. By providing the first hydraulic lock 11, the oil in the tailgate locking oil cylinder 3 can be controlled, thereby ensuring that the state of the tailgate locking oil cylinder 3 is maintained.

[0048] Preferably, in one embodiment, the first hydraulic lock 11 is provided on the first oil circuit 5 and the second oil circuit 6 to limit the oil from flowing out of the tailgate locking cylinder 3. That is, the direction of the first hydraulic lock 11 is to allow the oil to enter the cylinder from the outside and not to allow the oil to flow from the inside of the cylinder to the outside, thereby ensuring that the tailgate locking cylinder 3 is locked (hook locked) when it is retracted.

[0049] Preferably, in one embodiment, on the second oil circuit 6, the first hydraulic lock 11 is located at the rear side of the sequence valve 10. That is, after the oil flows from the second connector 2 into the second oil circuit 6, it first flows through the sequence valve 10 and then flows through the first hydraulic lock 11.

[0050] Specifically, in one embodiment, a connection node between the first connecting oil circuit 7 and the first oil circuit 5 is located on the front side of the first hydraulic lock 11 , and a connection node between the second connecting oil circuit 8 and the second oil circuit 6 is located on the front side of the first hydraulic lock 11 .

[0051] Preferably, in one embodiment, the rod chamber of the push shovel cylinder 4 is connected to the mobile station push shovel retreat main oil circuit 12, and the second connecting oil circuit 8 is connected to the rod chamber of the push shovel cylinder 4 through the mobile station push shovel retreat main oil circuit 12; the rodless chamber of the push shovel cylinder 4 is connected to the mobile station push shovel extension main oil circuit 13, and the first connecting oil circuit 7 is connected to the rodless chamber of the push shovel cylinder 4 through the mobile station push shovel extension main oil circuit 13. That is to say, in this embodiment, the first connecting oil circuit 7 and the second connecting oil circuit 8 are both indirectly connected to the push shovel cylinder 4. The mobile station push shovel retreat main oil circuit 12 and the mobile station push shovel extension main oil circuit 13 can be used to connect to an external oil source, so that the push shovel cylinder 4 can be controlled individually according to needs, thereby achieving compression of garbage.

[0052] Preferably, in one embodiment, a hydraulically controlled one-way valve 14 is provided on the second connecting oil circuit 8, and the hydraulically controlled one-way valve 14 is used to limit the oil in the mobile station push shovel retreat main oil circuit 12 from flowing into the second oil circuit 6. That is to say, the direction of the hydraulically controlled one-way valve 14 is to allow the oil to flow from the rod chamber of the tailgate locking oil cylinder 3 to the side of the rod chamber of the push shovel oil cylinder 4, but not to allow the oil to flow from the rod chamber of the push shovel oil cylinder 4 to the side of the rod chamber of the tailgate locking oil cylinder 3. The hydraulically controlled one-way valve 14 is used to prevent the high-pressure oil in the mobile station push shovel retreat main oil circuit 12 from entering the retract (close) oil circuit of the tailgate locking oil cylinder 3, causing pressure relief. The control oil circuit of the hydraulically controlled one-way valve 14 is located on the first connecting oil circuit 7, and is located in front of the control valve 9. That is to say, the control oil circuit of the hydraulically controlled one-way valve 14 is located between the control valve 9 and the rodless chamber oil circuit of the tailgate locking cylinder 3. After the oil flows from the first oil circuit 5 into the first connecting oil circuit 7, it will first flow through the control oil circuit of the hydraulically controlled one-way valve 14 and then flow through the control valve 9.

[0053] Preferably, in one embodiment, a second hydraulic lock is provided on the oil inlet and outlet lines of the bulldozer oil cylinder 4. By providing the second hydraulic lock, the oil in the bulldozer oil cylinder 4 can be controlled, thereby ensuring that the state of the bulldozer oil cylinder 4 is maintained. Similarly, the second hydraulic lock can be used to limit the outflow of oil from the bulldozer oil cylinder 4. In other words, the direction of the second hydraulic lock is to allow oil to enter the oil cylinder from the outside, and not to allow oil to flow from the inside of the oil cylinder to the outside.

[0054] Preferably, in one embodiment, a third hydraulic lock 15 is further included, which is arranged on the main oil circuit 12 for retracting the mobile station bulldozer and the main oil circuit 13 for extending the mobile station bulldozer. The connection node between the second connecting oil circuit 8 and the main oil circuit 12 for retracting the mobile station bulldozer is located on the side of the third hydraulic lock 15 close to the bulldozer cylinder 4. The connection node between the first connecting oil circuit 7 and the main oil circuit 13 for extending the mobile station bulldozer is located on the side of the third hydraulic lock 15 close to the bulldozer cylinder 4. By setting the third hydraulic lock 15, the high-pressure oil of the power unloading flowing in from the first oil circuit 5 and the second oil circuit 6 can be prevented from entering other positions of the main oil circuit 12 for retracting the mobile station bulldozer and the main oil circuit 13 for extending the mobile station bulldozer, causing pressure relief.

[0055] Specifically, in one embodiment, the control valve 9 is a manual ball valve. Of course, in other embodiments, other valves with on-off control capabilities can also be used, such as an electromagnetic ball valve, to achieve electric control.

[0056] Specifically, in one embodiment, the first connector 1 and the second connector 2 are both quick-connect connectors.

[0057] Preferably, in one embodiment, the rear side of the first joint 1 can be connected to the first oil circuit 5 and the first connecting oil circuit 7 through a tee. The rear side of the second joint 2 can be connected to the second oil circuit 6 and the second connecting oil circuit 8 through a tee.

[0058] Preferably, in one embodiment, the mobile station push shovel retracting main oil circuit 12 can be connected to the push shovel cylinder 4 and the second connecting oil circuit 8 through a tee, and the mobile station push shovel extension main oil circuit 13 can be connected to the push shovel cylinder 4 and the first connecting oil circuit 7 through a tee. The two tees can be located in front of the second hydraulic lock 15.

[0059] Specifically, in one embodiment, two tailgate locking cylinders 3 are provided, and the rod chambers of the two tailgate locking cylinders 3 are connected to the second oil circuit 6, and the rodless chambers of the two tailgate locking cylinders 3 are connected to the first oil circuit 5. Two push shovel cylinders 4 are provided, and the rod chambers of the two push shovel cylinders 4 are connected to the second connecting oil circuit 8, and the rodless chambers of the two push shovel cylinders 4 are connected to the first connecting oil circuit 7.

[0060] In one embodiment, the operation process of the unloading hydraulic system 100 of the mobile garbage compression equipment is as follows: when unloading, the first main oil circuit 101 of the hook arm vehicle and the second main oil circuit 102 of the hook arm vehicle are connected to the first oil circuit 5 and the second oil circuit 6 respectively through the first joint 1 and the second joint 2. First, the first main oil circuit 101 of the hook arm vehicle passes high-pressure oil, and enters the rodless chamber of the tailgate locking cylinder 3 through the first oil circuit 5. At this time, the control valve 9 is in a closed state, so the high-pressure oil only allows the tailgate locking cylinder 3 to extend (open the door), and the oil from the rod chamber can freely pass through the sequence valve 10. After the tailgate locking cylinder 3 is extended to the right position, the control valve 9 is opened to allow the high-pressure oil to enter the rodless chamber of the push shovel cylinder 4 through the first connecting oil circuit 7, so that the push shovel cylinder 4 is extended (pushed), and due to the effect of the third hydraulic lock 15, the high-pressure oil will not enter the mobile station push shovel extension main oil circuit 13 to cause pressure relief. After unloading is completed, the hook arm vehicle oil circuit is reversed, and the second main oil circuit 102 of the hook arm vehicle passes high-pressure oil. Due to the action of the sequence valve 10, the high-pressure oil enters the second oil circuit 6 and then enters the second connecting oil circuit 8, and then enters the rod chamber of the push shovel oil cylinder 4 to retract it. When the push shovel oil cylinder 4 is retracted to the position and the pressure is greater than 14MPa, the sequence valve 10 is opened, and the high-pressure oil enters the rod chamber of the tailgate locking oil cylinder 3 to retract it (the hook is closed). Finally, the control valve 9 is closed to complete the whole process of power unloading. That is to say, in this embodiment, the control valve 9 is used to control the first connecting oil circuit 7 to be connected after the tailgate locking oil cylinder 3 is extended in the extension working condition, so that the push shovel oil cylinder 4 is extended later. The sequence valve 10 is used to retract the push shovel oil cylinder 4 first and then retract the tailgate locking oil cylinder 3 in the retraction working condition.

[0061] The above is only an implementation method of the present invention. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements are all within the protection scope of the present invention.

Claims

1. A discharging hydraulic system for a mobile garbage compression device, characterized in that: It includes a first joint, a second joint, a tailgate locking cylinder, a shovel cylinder, a first oil circuit, a second oil circuit, a first connecting oil circuit, a second connecting oil circuit, a control valve, and a sequence valve; The first connector and the second connector are used to connect to external oil source equipment; The rodless chamber of the tailgate locking oil cylinder is connected to the first joint through the first oil circuit, and the rod chamber is connected to the second joint through the second oil circuit; The rodless chamber of the push shovel oil cylinder is connected to the first oil circuit via the first connecting oil circuit, and the rod chamber is connected to the second oil circuit without disconnection via the second connecting oil circuit; The control valve is arranged on the first connecting oil circuit to control the on-off of the first connecting oil circuit; The sequence valve is arranged on the second oil circuit to control the order in which the oil flows into the rod chamber of the tailgate locking cylinder and the rod chamber of the push shovel cylinder.

2. The unloading hydraulic system of the mobile garbage compression equipment according to claim 1 is characterized in that: The rodless chamber of the push blade oil cylinder is connected to the first oil circuit without a sequence valve through the first connecting oil circuit.

3. The unloading hydraulic system of the mobile garbage compression equipment according to claim 1 is characterized in that: The sequence valve is a one-way sequence valve with adjustable pressure, and the direction is to allow the oil to flow from the inside of the tailgate locking cylinder to the outside without pressure, and to allow the oil to flow from the outside to the inside of the tailgate locking cylinder with pressure; A connection node between the second connecting oil circuit and the second oil circuit is located on a side of the sequence valve close to the second joint.

4. The unloading hydraulic system of the mobile garbage compression equipment according to claim 1 is characterized in that: A first hydraulic lock is arranged on the inlet and outlet oil paths of the tailgate locking oil cylinder.

5. The unloading hydraulic system of the mobile garbage compression equipment according to claim 4 is characterized in that: The first hydraulic lock is arranged on the first oil circuit and the second oil circuit to limit the oil from flowing out of the tailgate locking cylinder.

6. The unloading hydraulic system of the mobile garbage compression equipment according to claim 5, characterized in that: In the second oil circuit, the first hydraulic lock is located at the rear side of the sequence valve.

7. The unloading hydraulic system of the mobile garbage compression equipment according to claim 1, characterized in that: The rod chamber of the push shovel oil cylinder is connected to the push shovel retreat main oil circuit of the mobile station, and the second connecting oil circuit is connected to the rod chamber of the push shovel oil cylinder through the push shovel retreat main oil circuit of the mobile station; The rodless chamber of the push blade oil cylinder is connected to a main oil circuit for extending the push blade of a mobile station, and the first connecting oil circuit is connected to the rodless chamber of the push blade oil cylinder through the main oil circuit for extending the push blade of the mobile station.

8. The unloading hydraulic system of the mobile garbage compression equipment according to claim 7, characterized in that: The second connecting oil circuit is provided with a hydraulically controlled one-way valve, and the hydraulically controlled one-way valve is used to limit the oil in the main oil circuit of the mobile station bulldozer retreat to flow into the second oil circuit; The control oil circuit of the hydraulically controlled one-way valve is located on the first connecting oil circuit and at the front side of the control valve.

9. The unloading hydraulic system of the mobile garbage compression equipment according to claim 1, characterized in that: A second hydraulic lock is arranged on the oil inlet and outlet lines of the push-blade oil cylinder.

10. The unloading hydraulic system of the mobile garbage compression equipment according to claim 7, characterized in that: It also includes a third hydraulic lock provided on the main oil circuit for retracting the push shovel of the mobile station and on the main oil circuit for extending the push shovel of the mobile station; The connection node between the second connecting oil circuit and the main oil circuit for retreating the push blade of the mobile station is located on a side of the third hydraulic lock close to the push blade cylinder; The connection node between the first connecting oil circuit and the main oil circuit for extending the push blade of the mobile station is located on a side of the third hydraulic lock close to the push blade cylinder.

Images