A compression type garbage truck

Abstract

The application discloses a compression type garbage truck and relates to the field of environmental sanitation equipment. The compression type garbage truck comprises a chassis, a garbage truck upper loader, a garbage suction and collection device and a hydraulic system. The garbage suction and collection device is connected with the chassis or the garbage truck upper loader. The garbage truck upper loader is provided with an upper loader action mechanism. The garbage suction and collection device is used for sucking and collecting ground garbage and inputting the sucked and collected ground garbage into the garbage truck upper loader. A transfer box is arranged on a main shaft of the chassis. The hydraulic system comprises a side power take-off pump set and a transfer box pump set. The side power take-off pump set is used for driving the upper loader action mechanism to act. The transfer box pump set is connected with the transfer box and is used for driving the garbage suction and collection device to act. The compression type garbage truck provided by the application can automatically clean ground garbage during driving on the basis of keeping the original garbage collection and compression functions unchanged in the parking state, so that the working efficiency is remarkably improved and the working cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of sanitation equipment, and more specifically, to a compressed garbage truck. Background Technology

[0002] The compactor garbage truck integrates a loader and a garbage bin into its body. The loader's upper structure actuation mechanism is driven by a side-take-off dual pump. This side-take-off dual pump obtains power through a power take-off unit on the side of the gearbox and can only be activated when the vehicle is parked and in neutral. Therefore, the actions of driving the pusher, skid plate, scraper, and bin tipping mechanism must be performed while the vehicle is stationary.

[0003] Limited by this driving method, existing compactor garbage trucks can only perform garbage collection and compression functions, and cannot perform auxiliary operations while in motion. When faced with scattered garbage on the ground, manual sweeping is still required, and the garbage must be compressed and processed by the loader before the truck can continue to move while parked, resulting in low operating efficiency and high operating costs. Summary of the Invention

[0004] The purpose of this invention is to provide a compression garbage truck that, while maintaining the original garbage collection and compression functions in the parked state, can automatically sweep up garbage on the ground during driving, thereby significantly improving operating efficiency and reducing operating costs.

[0005] An embodiment of the present invention provides a technical solution: A compressed garbage truck includes a chassis, a garbage truck superstructure, a garbage suction device, and a hydraulic system. The garbage suction device is connected to the chassis or the garbage truck superstructure. The garbage truck is equipped with a superstructure actuation mechanism. The garbage suction device is used to suction ground garbage and input the suctioned ground garbage into the garbage truck superstructure. A transfer case is mounted on the main shaft of the chassis. The hydraulic system includes a side-take pump group and a transfer case pump group. The side-take pump group is used to drive the upper structure's actuating mechanism. The transfer case pump group is connected to the transfer case and is used to drive the garbage suction device.

[0006] In an optional embodiment, the hydraulic system further includes an oil tank, a flow priority valve group, an upper structure actuation oil circuit, and a garbage suction oil circuit. The oil inlet of the side power take-off pump group and the transfer case pump group are connected to the oil tank, and one of their oil outlets is connected to the main oil inlet of the flow priority valve group. The priority oil outlet of the flow priority valve group is connected to the garbage suction oil circuit, and its bypass oil outlet is connected to the upper structure actuation oil circuit. The flow priority valve group is configured to direct all oil flowing into the main oil inlet to the bypass oil outlet when the power is off, and to divert the oil flowing into the main oil inlet to the priority oil outlet and the bypass oil outlet according to the input current when the power is on.

[0007] In an optional embodiment, the flow priority valve group is equipped with a proportional electromagnet. When the input current of the proportional electromagnet reaches a set threshold, the flow priority valve group directs all the oil flowing into the main oil inlet to the priority oil outlet.

[0008] In an optional embodiment, the upper structure actuation oil circuit includes a multi-way valve and at least one actuation cylinder connected to the multi-way valve. The multi-way valve is provided with a large pump inlet and a small pump inlet, and the multi-way valve is provided with a merging check valve connected between the large pump inlet and the small pump inlet. The side-take-off pump assembly includes a first oil pump and a second oil pump. The oil outlet of the first oil pump is connected to the oil inlet of the large pump, and the oil outlet of the second oil pump is connected to the oil inlet of the small pump.

[0009] In an optional embodiment, the transfer case pump assembly includes a third oil pump and a fourth oil pump. The oil outlet of the third oil pump is connected to the oil inlet of the main pump, and the oil outlet of the fourth oil pump is connected to the main oil inlet. The flow priority valve assembly is fluidly connected between the second oil pump and the oil inlet of the small pump, and the oil outlet of the second oil pump is connected to the main oil inlet.

[0010] In an optional embodiment, the garbage suction device is equipped with a fan for generating negative pressure inside it to suction garbage from the ground, and the garbage suction oil circuit includes a fan motor for driving the fan to operate. The transfer case pump set also includes a fifth oil pump connected to the transfer case. The fifth oil pump is fluidly connected to the fan motor and forms a closed hydraulic circuit.

[0011] In an optional embodiment, the hydraulic system further includes a control valve assembly, the flow priority valve assembly being integrated into the control valve assembly, the control valve assembly having multiple sets of working ports arranged in parallel between the priority outlet and the oil tank, and the waste suction oil circuit being connected to at least one set of working ports on the control valve assembly.

[0012] In an optional embodiment, the garbage suction device is further provided with a set of crushing blades for crushing the garbage inside it, and the garbage suction oil circuit also includes a crushing motor for driving the crushing blades, the crushing motor being connected to a set of working oil ports on the control valve group.

[0013] In an optional embodiment, the garbage collection device includes a driving compartment and a suction nozzle assembly. The garbage collection hydraulic circuit further includes a suction nozzle sliding cylinder disposed within the driving compartment, the suction nozzle sliding cylinder being connected to a set of working ports on the control valve assembly. The suction nozzle assembly is slidably engaged with the driving compartment and connected to the suction nozzle sliding cylinder, for sliding relative to the driving compartment in the left-right direction of the chassis under the drive of the suction nozzle sliding cylinder, and is configured to collect ground garbage; and / or, The garbage suction oil circuit also includes a suction nozzle lifting cylinder installed in the driving compartment. The suction nozzle lifting cylinder is connected to a set of working oil ports on the control valve group. The suction nozzle assembly is connected to the suction nozzle lifting cylinder and is used to move in the vertical direction under the drive of the suction nozzle lifting cylinder.

[0014] In an optional embodiment, the compressed garbage truck further includes a material-pushing device, which is connected to the chassis or the garbage truck superstructure and is configured to push the ground garbage in front of the chassis to the left or right side of the chassis as the chassis moves forward. The hydraulic system also includes a material feeding system for driving the material feeding device, the material feeding system being connected to at least one set of working ports on the control valve assembly.

[0015] In an optional embodiment, the material-pushing device includes a material-pushing plate for pushing ground waste; The material feeding system includes a material feeding plate deflection cylinder for driving the material feeding plate to deflect to the left or right side of the chassis, the material feeding plate deflection cylinder being connected to a set of working oil ports on the control valve group; and / or, in an optional embodiment, the material feeding system further includes a material feeding plate lifting cylinder for driving the material feeding plate to move up and down, the material feeding plate lifting cylinder being connected to a set of working oil ports on the control valve group.

[0016] Compared to existing technologies, the compressed garbage truck provided by this invention is equipped with a garbage suction device connected to the chassis or the garbage truck superstructure. A side-take pump unit in the hydraulic system drives the superstructure's actuating mechanism. A transfer case is mounted on the chassis's main shaft, and a transfer case pump unit in the hydraulic system is connected to the transfer case to drive the garbage suction device. In the parked state, the side-take pump unit pumps oil to drive the superstructure's actuating mechanism, ensuring that the garbage collection and compression functions remain unchanged in the parked state. In the driving state, the transfer case pump unit pumps oil to the garbage suction device, enabling the garbage suction device to operate normally and automatically clean up ground garbage. Therefore, the beneficial effects of the compressed garbage truck provided by this invention include: while maintaining the original garbage collection and compression functions in the parked state, it can automatically clean up ground garbage during driving, thereby significantly improving operational efficiency and reducing operating costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A structural schematic diagram of a compressed garbage truck provided as an embodiment of the present invention, viewed from one perspective. Figure 2 A structural schematic diagram of a compressed garbage truck provided as an embodiment of the present invention from another perspective; Figure 3 This is a schematic diagram of the nozzle assembly from one perspective. Figure 4 This is a structural schematic diagram of the suction nozzle assembly from another perspective. Figure 5 for Figure 1 Enlarged view of region A in the middle; Figure 6 This is a schematic diagram of the hydraulic system. Figure 7 for Figure 6 Enlarged view of region B in the middle; Figure 8 for Figure 6 Enlarged view of region C in the middle; Figure 9 This is a schematic diagram showing the connection between the side-take pump unit and the transfer case pump unit and the flow priority valve group.

[0019] Icons: 100-Compactor garbage truck; 110-Garbage truck superstructure; 120-Garbage suction device; 121-Driving compartment; 122-Suction nozzle assembly; 123-Fan; 124-Slide rail; 125-Crushing blade assembly; 126-Sliding frame; 127-Suction nozzle roller; 128-Vertical four-bar linkage; 129-Roll brush; 130-Transfer box; 140-Hydraulic system; 141-Oil tank; 142-Side power take-off pump assembly; 1421-First oil pump; 1422-Second oil pump; 143-Transfer box pump assembly; 1431-Third oil pump; 1432-Fourth oil pump; 1433-Fifth oil pump; 144-Flow priority valve assembly; 1441-Electro-proportional control valve; 1442-Flow priority valve; 1451-Multi-way valve; 1452-Push plate cylinder; 1453-Slide rail 1454-Lifting Cylinder; 1455-Tilting Cylinder; 1456-Hook Locking Cylinder; 1457-Merging Check Valve; 1458-Scraper Cylinder; 1461-Blower Motor; 1462-Suction Nozzle Sliding Cylinder; 1463-Suction Nozzle Lifting Cylinder; 1464-Crushing Motor; 1471-Plate Deflection Cylinder; 1472-Plate Lifting Cylinder; 148-Control Valve Group; 1481-Working oil port; 1482-Solenoid directional valve; 150-Packing device; 160-Gas bin; 170-Material feeding device; 171-Material feeding plate; 180-Upper structure operating oil circuit; 190-Gas suction oil circuit; D-Main pump oil inlet; P-Bypass oil outlet; S-Small pump oil inlet; V-Bypass oil inlet; X-Priority oil inlet; Y-Priority oil outlet; Z-Main oil inlet. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the 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 invention without inventive effort are within the scope of protection of the invention.

[0022] 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.

[0023] In the description of this invention, it should be understood that the terms "upper," "lower," "inner," "outer," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] Example Please refer to the following: Figure 1 and Figure 2 , Figure 1 The image shown is a structural schematic diagram of the compressed garbage truck 100 provided in this embodiment from one perspective. Figure 2 The diagram shown is a structural schematic of the compressed garbage truck 100 from another perspective.

[0028] The compressed garbage truck 100 provided in this embodiment includes a chassis, a garbage truck superstructure 110, a garbage suction device 120, a material feeding device 170, and a hydraulic system 140. Both the garbage suction device 120 and the material feeding device 170 are connected to the garbage truck superstructure 110. The garbage suction device 120 is used to suction ground garbage, and the material feeding device 170 is used to push ground garbage in front of the compressed garbage truck 100 to the left or right side of the garbage truck superstructure 110 during the forward movement of the compressed garbage truck 100. A transfer case 130 is provided on the main shaft of the chassis, which draws power from the main shaft to provide power for the operation of the garbage suction device 120 and the material feeding device 170.

[0029] The garbage truck's upper structure 110 is equipped with an internally connected garbage bin 160 and a loader 150. The garbage suction device 120 is connected to the loader 150 through a pipeline and is used to transport the suctioned ground garbage to the loader 150. The upper structure's actuating mechanism is located in at least one of the garbage bin 160 and the loader 150, and may include a pusher, scraper, sliding plate, tipping mechanism, etc. The upper structure's actuating mechanism can compress the garbage entering the loader 150 and then send it into the garbage bin 160.

[0030] In this embodiment, the material feeding device 170 is connected to the front end of the garbage truck superstructure 110, and the garbage suction device 120 is detachably connected to the rear end of the loader 150. In another embodiment, depending on the actual application conditions, the material feeding device 170 and the garbage suction device 120 may also be detachably connected to other parts of the garbage truck superstructure 110.

[0031] In practical applications, when the compressed garbage truck 100 is collecting and compressing garbage, the garbage suction device 120 can be detached from the garbage truck's upper structure 110 to avoid affecting the truck's rapid movement. When it is necessary to clean up ground debris such as leaves and branches, the garbage suction device 120 can be connected to the garbage truck's upper structure 110 to achieve automated cleaning of ground debris, eliminating the need for manual sweeping or additional road sweeping trucks.

[0032] Understandably, depending on actual needs, the garbage suction device 120 can directly spray the collected garbage into the garbage bin 160, bypassing the loader 150. In this case, the upper mechanism may not need to operate. Alternatively, the garbage can be first transported to the loader 150, where the upper mechanism compresses it before sending it into the garbage bin 160.

[0033] The garbage collection device 120 provided in this embodiment includes a driving compartment 121 and a suction nozzle assembly 122. The driving compartment 121 is detachably connected to the garbage truck superstructure 110, specifically to the loader 150. The suction nozzle assembly 122 is used to collect garbage from the ground. Specifically, the suction nozzle assembly 122 slides in conjunction with the driving compartment 121, allowing it to slide relative to the driving compartment 121 in the left-right direction of the garbage truck superstructure 110, thereby adapting to different road conditions, effectively approaching or aiming at the garbage accumulation location, and improving cleaning efficiency and effect.

[0034] For example, during the operation of the compressed garbage truck 100, fallen leaves along the roadside tend to accumulate on the right side of the garbage truck's upper structure 110. The suction nozzle of a traditional sweeper is fixed to the bottom of the garbage truck's upper structure 110, roughly aligned with the middle area, which is far from the roadside, making it difficult to efficiently and thoroughly collect the fallen leaves. However, in this embodiment, the suction nozzle assembly 122 can slide relative to the driving compartment 121 to the right side of the garbage truck's upper structure 110, close to the roadside to collect fallen leaves, significantly improving the efficiency and effectiveness of leaf collection.

[0035] The driving compartment 121 is equipped with a fan 123. The air outlet of the fan 123 is connected to the filler 150 through a pipe, and the suction nozzle assembly 122 is connected to the air inlet of the fan 123 through a suction pipe. In practical applications, when the fan 123 is running, it drives air to flow unidirectionally from the suction nozzle assembly 122 to the filler 150, so that the suction nozzle assembly 122 can pick up ground debris under negative pressure.

[0036] Please refer to the following: Figure 3 , Figure 3 The diagram shown is a structural schematic of the nozzle assembly 122 from one perspective.

[0037] In this embodiment, the driving compartment 121 is provided with a slide rail 124 extending in the left-right direction. The suction nozzle assembly 122 is slidably engaged with the slide rail 124, and a retraction port for the suction nozzle assembly 122 to enter and exit is provided on one side of the driving compartment 121 corresponding to one end of the slide rail 124. The driving compartment 121 is also provided with a suction nozzle sliding cylinder 1462, which is connected to the suction nozzle assembly 122 and is used to drive the suction nozzle sliding cylinder 1462 to slide along the slide rail 124 in the left-right direction of the garbage truck mounting 110.

[0038] The driving compartment 121 is also equipped with a nozzle lifting cylinder 1463. The nozzle lifting cylinder 1463 is slidably engaged with the slide rail 124 through a sliding frame 126, and the output end of the nozzle lifting cylinder 1463 is connected to the nozzle assembly 122. The nozzle lifting cylinder 1463 is used to drive the nozzle assembly 122 to move in the vertical direction when the nozzle assembly 122 is disengaged from the slide rail 124, so as to adjust the height of the nozzle assembly 122 off the ground.

[0039] In this embodiment, the bottom of the suction nozzle assembly 122 is provided with a suction nozzle roller 127, and the side of the suction nozzle assembly 122 is provided with an anti-collision roller. Preferably, when the suction nozzle assembly 122 is on the slide rail 124, there is a height difference between the suction nozzle roller 127 and the ground.

[0040] In fact, the suction nozzle sliding cylinder 1462 is connected to the suction nozzle assembly 122 through the sliding frame 126 and the suction nozzle lifting cylinder 1463. When the suction nozzle sliding cylinder 1462 drives the sliding frame 126 to slide towards the receiving port, the sliding frame 126 drives the suction nozzle assembly 122 to slide synchronously towards the receiving port. When the suction nozzle assembly 122 slides to the end of the slide rail 124 corresponding to the receiving port and disengages, the sliding frame 126 is still on the slide rail 124. At this time, the suction nozzle assembly 122 is smoothly lowered to the ground by the suction nozzle lifting cylinder 1463, so that the suction nozzle roller 127 at the bottom of the suction nozzle assembly 122 contacts the ground. Under the action of the suction nozzle roller 127, the suction nozzle assembly 122 can move synchronously with the garbage truck loading 110.

[0041] To ensure that the nozzle assembly 122 maintains a stable posture during lifting and lowering, in this embodiment, a vertical four-bar linkage 128 is provided between the sliding frame 126 and the nozzle assembly 122. The telescopic end of the nozzle lifting cylinder 1463 is connected to the nozzle assembly 122 through the vertical four-bar linkage 128, which can drive the vertical four-bar linkage 128 to swing in the vertical plane, thereby causing the nozzle assembly 122 to rise or fall in a stable posture.

[0042] Please refer to the following: Figure 4 , Figure 4 The diagram shown is a structural schematic of the nozzle assembly 122 from another perspective.

[0043] The garbage collection device 120 is also equipped with a set of crushing blades 125 for crushing the garbage inside it. Specifically, the set of crushing blades 125 is located inside the suction nozzle assembly 122. In fact, the suction nozzle assembly 122 also has a roller brush 129 inside. The roller brush 129 is used to sweep garbage from the ground into the suction nozzle assembly 122, and the set of crushing blades 125 crushes the garbage that enters the suction nozzle assembly 122.

[0044] In this embodiment, the suction nozzle assembly 122 is also provided with a crushing motor 1464. The crushing blade assembly 125 and the roller brush 129 are connected to the crushing motor 1464 through a transmission mechanism, that is, both the crushing blade assembly 125 and the roller brush 129 operate under the drive of the crushing motor 1464.

[0045] Please refer to the following: Figure 5 , Figure 5 As shown Figure 1 An enlarged schematic diagram of region A in the middle.

[0046] The material-pushing device 170 includes a material-pushing plate 171 for pushing ground garbage, and a hydraulic system 140 for driving the material-pushing plate 171 to deflect to the left or right of the garbage truck loading unit 110, and also for driving the material-pushing plate 171 to move up and down to adjust the ground clearance of the material-pushing plate 171.

[0047] Please refer to the following: Figure 6 , Figure 7 and Figure 8 , Figure 6 The diagram shown is a structural schematic of the hydraulic system 140. Figure 7 As shown Figure 6 Enlarged diagram of region B in the middle. Figure 8 As shown Figure 6 A magnified view of region C in the middle.

[0048] In this embodiment, the hydraulic system 140 includes an oil tank 141, a side-take pump group 142, a transfer case pump group 143, a flow priority valve group 144, an upper structure actuation oil circuit 180, a waste suction oil circuit 190, and a material feeding system. The oil inlet of the side-take pump group 142 and the transfer case pump group 143 is connected to the oil tank 141, and one of their oil outlets is connected to the main oil inlet Z of the flow priority valve group 144. The priority oil outlet Y of the flow priority valve group 144 is connected to the waste suction oil circuit 190 and the material feeding system, and its bypass oil outlet P is connected to the upper structure actuation oil circuit 180.

[0049] The transfer case pump unit 143 is driven by the transfer case 130. The upper structure actuation oil circuit 180 is used to drive the upper structure actuation mechanism. The garbage suction oil circuit 190 is used to drive the garbage suction device 120. The material feeding system is used to drive the material feeding device 170.

[0050] The flow priority valve assembly 144 is configured to guide all the oil flowing into the main oil inlet Z to the bypass oil outlet P when the power is off, and to divert the oil flowing into the main oil inlet Z to the priority oil outlet Y and the bypass oil outlet P according to the input current when the power is on, and to guide all the oil flowing into the main oil inlet Z to the priority oil outlet Y when the input current reaches a set threshold.

[0051] The upper structure hydraulic circuit 180 includes a multi-way valve 1451 and multiple actuating cylinders connected to the multi-way valve 1451. These cylinders include a push plate cylinder 1452, a sliding plate cylinder 1453, a scraper cylinder 1458, a lifting cylinder 1454, a drum tipping cylinder 1455, and a locking hook cylinder 1456. The multi-way valve 1451 has a large pump inlet D and a small pump inlet S. A confluence check valve 1457 connects the large pump inlet D and the small pump inlet S within the multi-way valve 1451.

[0052] The other oil outlet of each of the side-take pump group 142 and the transfer case pump group 143 is connected to the oil inlet D of the large pump, and the bypass oil outlet P is connected to the oil inlet S of the small pump.

[0053] In this embodiment, the garbage suction oil circuit 190 includes a blower motor 1461 for driving the blower 123 in the travel compartment 121, a suction nozzle sliding cylinder 1462 and a suction nozzle lifting cylinder 1463 located in the travel compartment 121, and a crushing motor 1464 for driving the crushing blade assembly 125 and the roller brush 129. The material feeding system includes a material feeding plate deflection cylinder 1471 for driving the material feeding plate 171 to deflect to the left or right side of the garbage truck mounting 110, and a material feeding plate lifting cylinder 1472 for driving the material feeding plate 171 to move up and down.

[0054] Please refer to the following: Figure 9 , Figure 9The diagram shows the connection between the side-take pump unit 142, the transfer case pump unit 143, and the flow priority valve unit 144.

[0055] The flow priority valve assembly 144 integrates an electro-proportional control valve 1441 and a flow priority valve 1442 that are interconnected. The electro-proportional control valve 1441 integrates a proportional electromagnet. The oil inlet of the electro-proportional control valve 1441 and the bypass oil inlet V of the flow priority valve 1442 are connected to the main oil inlet Z. The oil outlet of the electro-proportional control valve 1441 is connected to the priority oil inlet X of the flow priority valve 1442.

[0056] Both the electro-proportional control valve 1441 and the flow priority valve 1442 have two floating working positions. When the electro-proportional control valve 1441 is de-energized, it switches to one of the working positions, disconnecting the priority oil inlet X of the flow priority valve 1442 from the main oil inlet Z. This allows all the oil flowing into the main oil inlet Z to reach the bypass oil inlet V, causing the flow priority valve 1442 to switch to one of the working positions. All the oil is then supplied to the small pump inlet S of the multi-way valve 1451 through the bypass oil outlet P, ensuring that the upper structure can operate at full speed in the parked state and that the garbage collection and compression functions remain unchanged in the parked state.

[0057] When the electro-proportional control valve 1441 is energized and the input current is less than the set threshold, the electro-proportional control valve 1441 floats between its two positions, directing a portion of the oil flowing into the main inlet Z to the priority inlet X, and the remaining portion to the bypass inlet V. This causes the flow priority valve 1442 to float between its two positions, so that the oil flowing into the priority inlet X is supplied to the waste treatment system and the material feeding system through the priority outlet Y, and the oil flowing into the bypass inlet V is supplied to the upper structure actuation oil circuit 180 through the bypass outlet P. This ensures that the waste suction device 120, the material feeding device 170, and the upper structure actuation mechanism operate normally during vehicle operation, achieving automatic cleaning and compression of ground waste.

[0058] When the input current exceeds the set threshold, the electro-proportional control valve 1441 switches to another operating position, connecting the priority oil inlet X of the flow priority valve 1442 with the main oil inlet Z, so that all the oil flowing into the main oil inlet Z reaches the priority oil inlet X, causing the flow priority valve 1442 to switch to another operating position, supplying all the oil to the waste treatment system and the material feeding system through the priority oil outlet Y, ensuring that the waste treatment system and / or the material feeding system can operate at full speed.

[0059] In this embodiment, the side-take pump assembly 142 includes a first oil pump 1421 and a second oil pump 1422, which together form a side-take dual pump. The oil outlet of the first oil pump 1421 is connected to the oil inlet D of the main pump, and the oil outlet of the second oil pump 1422 is connected to the main oil inlet Z.

[0060] The transfer case pump assembly 143 includes a third oil pump 1431 and a fourth oil pump 1432, which together form a dual pump structure connected to the transfer case 130. The outlet of the third oil pump 1431 is connected to the main pump inlet D, and the outlet of the fourth oil pump 1432 is connected to the main inlet Z.

[0061] In this embodiment, the transfer case 130 has two power take-off ports, and the tandem pump structure consisting of the third oil pump 1431 and the fourth oil pump 1432 is connected to one of the power take-off ports. The transfer case pump assembly 143 also includes a fifth oil pump 1433, which is separately connected to the other power take-off port of the transfer case 130. The fifth oil pump 1433 is fluidly connected to the fan motor 1461 and forms a closed hydraulic circuit.

[0062] Preferably, the fifth oil pump 1433 in this embodiment is a variable displacement piston pump. Since the blower motor 1461 has a large demand for oil flow, the fifth oil pump 1433 and the blower motor 1461 form a closed hydraulic circuit and operate independently. Without changing the oil tank 141 and the oil suction and return filter element of the original compressed garbage truck 100, the burden on the oil suction capacity and oil return capacity is avoided, ensuring that the rest of the garbage suction oil circuit 190, the material feeding system, and the upper structure action oil circuit 180 can all operate normally.

[0063] In fact, the hydraulic system 140 provided in this embodiment also includes a control valve group 148. A flow priority valve group 144 is integrated into the control valve group 148. The control valve group 148 has multiple working ports 1481 connected in parallel between the priority outlet Y and the oil tank 141. The suction nozzle sliding cylinder 1462, suction nozzle lifting cylinder 1463, and crushing motor 1464 in the waste suction oil circuit 190 are all connected to the three working ports 1481 one-to-one via quick-release connectors. Furthermore, the material feeding plate deflection cylinder 1471 and material feeding plate lifting cylinder 1472 in the material feeding system are also connected to the two working ports 1481 one-to-one via quick-release connectors. It is understood that multiple working ports 1481 are each equipped with a corresponding electromagnetic directional valve 1482 to ensure that the corresponding connected cylinders or motors can switch operating states.

[0064] In this embodiment, when the compressed garbage truck 100 is parked, the transfer case 130 is not in operation, and the first oil pump 1421 and the second oil pump 1422 of the side power take-off pump group 142 are running. The first oil pump 1421 is the large pump, and the second oil pump 1422 is the small pump. The flow of the first oil pump 1421 is directly connected to the large pump inlet D of the multi-way valve 1451, and the flow of the second oil pump 1422 enters the total inlet Z of the flow priority valve group 144.

[0065] When the electro-proportional control valve 1441 is de-energized, all the oil flowing into the main oil inlet Z flows through the bypass oil outlet P to the small pump oil inlet S of the multi-way valve 1451. The oil then flows through the merging check valve 1457 of the multi-way valve 1451 and merges with the oil flowing into the main pump oil inlet D, supplying oil to multiple actuating cylinders.

[0066] In this case, the original side power take-off pump unit 142 maintains a stable flow supply to the upper structure actuation oil circuit 180, and the compression cycle efficiency of the upper structure actuation mechanism is comparable to that of the original vehicle, ensuring that after the garbage suction device 120 and the material feeding device 170 are removed, the compressed garbage truck 100 still has the original garbage collection and compression functions.

[0067] When ground waste needs to be processed, the compactor garbage truck 100 operates, and the transfer case 130 works under the drive of the main shaft, driving the third oil pump 1431, the fourth oil pump 1432, and the fifth oil pump 1433. In the dual-pump structure composed of the third oil pump 1431 and the fourth oil pump 1432, the third oil pump 1431 is the large pump, and the fourth oil pump 1432 is the small pump. The flow of the third oil pump 1431 goes directly to the large pump inlet D of the multi-way valve 1451, and the flow of the fourth oil pump 1432 enters the total inlet Z of the flow priority valve group 144.

[0068] When the electro-proportional control valve 1441 is energized, the oil flowing into the main inlet Z is preferentially distributed to the priority outlet Y according to the magnitude of the input current. Before the input current reaches the set threshold, the oil supply to the small pump inlet S of the multi-way valve 1451 is maintained through the bypass outlet P. At this time, the electromagnetic reversing valves 1482 corresponding to the material-driving plate deflection cylinder 1471, material-driving plate lifting cylinder 1472, suction nozzle sliding cylinder 1462, and suction nozzle lifting cylinder 1463 are energized according to the position of the compressed garbage truck 100, adjusting the position of the material-driving plate 171 and the suction nozzle assembly 122. The operating speed of each cylinder is controlled by the input current of the electro-proportional control valve 1441. Excess flow flows through the bypass outlet P to the small pump inlet S of the multi-way valve 1451, and merges with the oil flowing in through the large pump inlet D via the merging check valve 1457 of the multi-way valve 1451, supplying oil to multiple actuating cylinders.

[0069] After the positions of the feeding plate 171 and the suction nozzle assembly 122 are adjusted, the electro-proportional control valve 1441 and the solenoid directional valve 1482 corresponding to the crushing motor are energized. The crushing motor starts to work, and its speed can also be adjusted by the input current of the electro-proportional control valve 1441. The bypass flow input is connected to the upper device actuation oil circuit 180 to ensure its operating speed. Finally, the proportional solenoid valve on the fifth control valve is energized, and the fifth control valve gradually increases to the maximum displacement. The blower motor 1461 starts to run, and the entire vehicle can begin garbage collection, crushing, and compression loading.

[0070] In summary, the compressed garbage truck 100 provided in this embodiment, while maintaining the original garbage collection and compression functions in the parked state, can automatically sweep up ground garbage during driving and simultaneously complete the garbage compression process, thereby significantly improving operating efficiency and reducing operating costs.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A compressed garbage truck, characterized in that, The system includes a chassis, a garbage truck superstructure (110), a garbage suction device (120), and a hydraulic system (140). The garbage suction device (120) is connected to the chassis or the garbage truck superstructure (110). The garbage truck superstructure (110) is equipped with a superstructure actuation mechanism. The garbage suction device (120) is used to suction ground garbage and input the suctioned ground garbage into the garbage truck superstructure (110). A transfer case (130) is provided on the main shaft of the chassis. The hydraulic system (140) includes a side power take-off pump group (142) and a transfer case pump group (143). The side power take-off pump group (142) is used to drive the upper structure action mechanism to move. The transfer case pump group (143) is connected to the transfer case (130) and is used to drive the garbage suction device (120) to move.

2. The compressed garbage truck according to claim 1, characterized in that, The hydraulic system also includes an oil tank (141), a flow priority valve group (144), an upper structure actuation oil circuit (180), and a garbage suction oil circuit (190). The oil inlet of the side power take-off pump group (142) and the transfer case pump group (143) is connected to the oil tank (141), and one of their oil outlets is connected to the main oil inlet (Z) of the flow priority valve group (144). The priority oil outlet (Y) of the flow priority valve group (144) is connected to the garbage suction oil circuit (190), and its bypass oil outlet (P) is connected to the upper structure actuation oil circuit (180). The flow priority valve group (144) is configured to direct all the oil flowing into the main oil inlet (Z) to the bypass oil outlet (P) in the de-energized state, and to divert the oil flowing into the main oil inlet (Z) to the priority oil outlet (Y) and the bypass oil outlet (P) according to the input current in the energized state.

3. The compressed garbage truck according to claim 2, characterized in that, The flow priority valve group (144) is equipped with a proportional electromagnet. When the input current of the proportional electromagnet reaches a set threshold, the flow priority valve group (144) will guide all the oil flowing into the main oil inlet (Z) to the priority oil outlet (Y).

4. The compressed garbage truck according to claim 2, characterized in that, The upper structure actuation oil circuit (180) includes a multi-way valve (1451) and at least one actuation cylinder connected to the multi-way valve (1451). The multi-way valve (1451) is provided with a large pump inlet (D) and a small pump inlet (S). The multi-way valve (1451) is provided with a merging check valve (1457) connecting the large pump inlet (D) and the small pump inlet (S). The side-take-off pump assembly (142) includes a first oil pump (1421) and a second oil pump (1422). The oil outlet of the first oil pump (1421) is connected to the oil inlet (D) of the large pump, and the oil outlet of the second oil pump (1422) is connected to the oil inlet (S) of the small pump.

5. The compressed garbage truck according to claim 4, characterized in that, The transfer case pump assembly (143) includes a third oil pump (1431) and a fourth oil pump (1432). The oil outlet of the third oil pump (1431) is connected to the oil inlet (D) of the main pump, and the oil outlet of the fourth oil pump (1432) is connected to the main oil inlet (Z). The flow priority valve assembly (144) is fluidly connected between the second oil pump (1422) and the oil inlet (S) of the small pump. The oil outlet of the second oil pump (1422) is connected to the main oil inlet (Z).

6. The compressed garbage truck according to claim 2, characterized in that, The garbage collection device (120) is equipped with a fan (123) for generating negative pressure inside it to collect garbage on the ground, and the garbage collection oil circuit (190) includes a fan motor (1461) for driving the fan (123) to operate. The transfer case pump assembly (143) also includes a fifth oil pump (1433) connected to the transfer case (130). The fifth oil pump (1433) is fluidly connected to the fan motor (1461) and forms a closed hydraulic circuit.

7. The compressed garbage truck according to claim 2, characterized in that, The hydraulic system (140) also includes a control valve assembly (148), the flow priority valve assembly (144) is integrated into the control valve assembly (148), the control valve assembly (148) has multiple working ports (1481) arranged in parallel between the priority outlet (Y) and the oil tank (141), and the garbage suction oil circuit (190) is connected to at least one set of working ports (1481) on the control valve assembly (148).

8. The compressed garbage truck according to claim 7, characterized in that, The garbage suction device (120) is also provided with a crushing blade assembly (125) for crushing the garbage inside it. The garbage suction oil circuit (190) also includes a crushing motor (1464) for driving the crushing blade assembly (125) to operate. The crushing motor (1464) is connected to a set of working oil ports (1481) on the control valve assembly (148).

9. The compressed garbage truck according to claim 7, characterized in that, The garbage collection device (120) includes a driving compartment (121) and a suction nozzle assembly (122). The garbage suction oil circuit (190) further includes a suction nozzle sliding cylinder (1462) disposed in the driving compartment (121), the suction nozzle sliding cylinder (1462) being connected to a set of working oil ports (1481) on the control valve assembly (148); the suction nozzle assembly (122) is slidably engaged with the driving compartment (121) and connected to the suction nozzle sliding cylinder (1462), for sliding relative to the driving compartment (121) in the left-right direction of the chassis under the drive of the suction nozzle sliding cylinder (1462), and is configured to suction ground garbage; and / or, The garbage suction oil circuit (190) also includes a suction nozzle lifting cylinder (1463) disposed in the driving compartment (121), the suction nozzle lifting cylinder (1463) being connected to a set of working oil ports (1481) on the control valve group (148); the suction nozzle assembly (122) is connected to the suction nozzle lifting cylinder (1463) and is used to move in the vertical direction under the drive of the suction nozzle lifting cylinder (1463).

10. The compressed garbage truck according to claim 7, characterized in that, The compressed garbage truck (100) also includes a material-pushing device (170), which is connected to the chassis or the garbage truck superstructure (110) and is configured to push the ground garbage in front of the chassis to the left or right side of the chassis as the chassis moves forward. The hydraulic system (140) also includes a material feeding system for driving the material feeding device (170) to operate, the material feeding system being connected to at least one set of working ports (1481) on the control valve assembly (148).

11. The compressed garbage truck according to claim 10, characterized in that, The material feeding device (170) includes a material feeding plate (171) for pushing ground waste. The material feeding system includes a material feeding plate deflection cylinder (1471) for driving the material feeding plate (171) to deflect to the left or right side of the chassis, the material feeding plate deflection cylinder (1471) being connected to a set of working oil ports (1481) on the control valve group (148); and / or, the material feeding system further includes a material feeding plate lifting cylinder (1472) for driving the material feeding plate (171) to move up and down, the material feeding plate lifting cylinder (1472) being connected to a set of working oil ports (1481) on the control valve group (148).

Images