Single-power loading system for garbage truck

Abstract

The utility model discloses a single-power loading system for a garbage truck, which comprises a chassis steering assembly, a chassis power assembly, a power selection assembly and a loading driving assembly. The power is distributed to the loading driving assembly or the chassis steering assembly through the power selection assembly, so that the power utilization efficiency and the operation flexibility are effectively improved, the energy waste is reduced, and the power is effectively utilized when needed; through the design of integrating the chassis power assembly and the top-mounted driving assembly into a single power source, the requirement for multiple power systems is reduced, so that the manufacturing and maintenance cost is reduced, the weight of the vehicle is reduced, and the overall economical efficiency and operation efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage trucks, in particular to a single-power upper loading system for garbage trucks. Background Art

[0002] With the acceleration of urbanization, the requirements for standardization and high-standard leakage prevention of domestic waste collection and transportation are gradually increasing. Pure electric garbage bin transfer vehicles have been widely used in urban residential areas, commercial areas, schools, parks and other places for the transportation of barreled garbage due to their excellent sealing, efficient transfer capacity and low noise characteristics.

[0003] However, pure electric garbage bin transfer vehicles in the prior art usually use a low-voltage battery on the chassis to drive the power unit. Under multi-functional and high-load operating conditions, this configuration is prone to premature damage and accelerated aging of the battery, affecting the reliability of the vehicle and increasing maintenance costs. Since two power units and two hydraulic systems are configured, this not only leads to a waste of resources, but also significantly reduces the overall economic efficiency, which further affects the normal operation of the vehicle and generates additional operating costs. Utility Model Content

[0004] In order to solve the technical defects mentioned in the above background technology, the purpose of the utility model is to provide a single-power upper system for a garbage truck, including a chassis steering assembly, a chassis power assembly, a power selection assembly and an upper drive assembly;

[0005] The chassis steering assembly is connected to the chassis power assembly, and the chassis steering assembly is also connected to the upper body drive assembly through the power selection assembly. The chassis power assembly is used to provide power to the chassis steering assembly and the upper body drive system. The chassis steering assembly is used to assist the garbage truck in chassis steering during driving. The upper body drive assembly is used to assist the garbage truck in completing upper body lifting, flipping, and opening. The power selection assembly is used to transfer the power provided by the chassis power assembly to the chassis steering assembly or the upper body drive assembly.

[0006] The chassis steering assembly includes an oil pump for providing high-pressure oil.

[0007] The power selection assembly includes a first valve assembly, which is used to switch the flow direction of high-pressure oil and determine whether the oil pressure is sent to the chassis steering assembly or the upper body drive assembly.

[0008] The first valve assembly includes a three-way ball valve, which is provided with a first valve port, a second valve port and a third valve port. The first valve port is connected to the oil pump, the second valve port is connected to the chassis steering assembly, and the third valve port is connected to the upper body drive assembly.

[0009] The first valve assembly further includes a monitoring assembly, which is disposed between the first valve port and the oil pump and is used to monitor the conduction state of the first valve assembly;

[0010] Among them, before the vehicle starts, the monitoring component confirms that the high-pressure oil has correctly flowed into the chassis steering assembly, and the vehicle can start normally at this time. If the high-pressure oil is not detected flowing into the chassis steering assembly during startup, the vehicle start will fail immediately, and a voice alarm will be used to remind the driver to check and switch the first valve assembly to the second valve port. The driver adjusts the first valve assembly to the second valve port according to the prompt, and after confirmation by the monitoring component, the vehicle can try to start again and drive normally.

[0011] The power selection component includes a parking signal generating device, which is arranged between the chassis steering component and the chassis power component. The parking signal generating device is used to send a chassis parking signal to the chassis power component when parking. The chassis power component can output high-pressure oil to the power selection component only after receiving the parking signal sent by the parking signal generating device.

[0012] The power selection assembly also includes a second valve assembly, which includes a valve core, a spring, a pressure delivery pipe, a fourth valve port, a fifth valve port and a sixth valve port, wherein the fourth valve port is connected to the oil pump, the fifth valve port is connected to the chassis steering assembly, and the sixth valve port is connected to the upper body drive assembly. The chassis steering assembly provides oil pressure to the valve core through the pressure delivery pipe, and the spring is connected to the valve core to provide pressure in the same direction as the pressure delivery pipe.

[0013] The valve core comprises a first hydraulic channel and a second hydraulic channel, the first hydraulic channel is used to connect the fourth valve port, the fifth valve port and the sixth valve port, and the second hydraulic channel is used to connect the fourth valve port and the fifth valve port;

[0014] Wherein, when the garbage truck stops and is in operation, the parking signal generating device sends a parking signal to the chassis power assembly, and the chassis power assembly drives the oil pump to send high-pressure oil to the second valve assembly through the chassis steering assembly. At this time, the chassis steering assembly is in a stationary state, and the first pressure to the right relative to the valve core is not generated by the pressure delivery pipe on the valve core. The elastic force of the chassis steering assembly and the spring is less than the second pressure to the left relative to the valve core generated by the upper body drive assembly on the valve core, and the valve core moves to the left, and the fourth valve port is connected with the fifth valve port and the sixth valve port through the first hydraulic channel;

[0015] When the garbage truck stops and is in a driving state, the parking signal generating device does not send a parking signal to the chassis power assembly, and the chassis power assembly drives the oil pump to deliver high-pressure oil to the second valve assembly through the chassis steering assembly. At this time, the chassis steering assembly is in a working state, and a first pressure to the right relative to the valve core is generated on the valve core through the pressure delivery pipe. The elastic force of the chassis steering assembly and the spring is greater than the second pressure to the left relative to the valve core generated by the upper drive assembly on the valve core, and the valve core moves to the right, and the fourth valve port is connected to the fifth valve port through the second hydraulic channel.

[0016] The power selection component includes a first solenoid valve and a second solenoid valve, the first solenoid valve includes a third hydraulic channel and a fourth hydraulic channel, the third hydraulic channel is used to connect the chassis steering component and the chassis power component, the fourth hydraulic channel is used to connect the upper drive component and the chassis power component, the second solenoid valve is connected to the first solenoid valve, and is used to detect the oil pressure from the first solenoid valve, when the oil pressure is greater than a set value, the second solenoid valve is opened;

[0017] Among them, when the garbage truck is in a parking state, the parking signal generating device sends a parking signal to the first solenoid valve, the first solenoid valve is energized, switches to the fourth hydraulic channel, the upper body drive component and the chassis power component are connected, and when the second solenoid valve detects the oil pressure from the first solenoid valve and it is greater than the set value, the second solenoid valve is opened, and the upper body drive component starts to assist the garbage truck to complete the upper body lifting, turning, and opening the cover;

[0018] When the garbage truck is in driving state, the parking signal generating device does not send a parking signal to the first solenoid valve, the first solenoid valve loses power, switches to the third hydraulic channel, the chassis steering assembly is connected to the chassis power assembly, and the chassis steering assembly starts to control the chassis steering of the garbage truck during driving.

[0019] The power selection assembly also includes a first one-way valve and a second one-way valve. The first one-way valve is arranged between the chassis steering assembly and the chassis power assembly, and the second one-way valve is arranged between the upper body drive assembly and the first solenoid valve. The first one-way valve and the second one-way valve are used to prevent high-pressure oil backflow.

[0020] The second solenoid valve is also provided with a handbrake signal generating device, and the handbrake signal generating device is used to generate a handbrake signal;

[0021] Among them, the second solenoid valve can only be energized when it detects a handbrake signal.

[0022] In summary, the beneficial effects of the utility model are:

[0023] 1. This embodiment effectively improves power utilization efficiency and operational flexibility by connecting the chassis steering assembly with the chassis power assembly and distributing power to the upper drive assembly or the chassis steering assembly through the power selection assembly, which not only reduces energy waste but also ensures that power is effectively utilized when needed.

[0024] 2. This embodiment reduces the need for multiple power systems by integrating the chassis power assembly and the upper drive assembly into a single power source design, thereby reducing manufacturing and maintenance costs, reducing the weight of the vehicle, and thus improving overall economy and operational efficiency.

[0025] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments 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 creative work.

[0027] Figure 1 It is a schematic diagram of the structure of the embodiment of the utility model;

[0028] Figure 2 It is a structural diagram of the first embodiment of the utility model;

[0029] Figure 3 It is a partial structural diagram of the first embodiment of the utility model;

[0030] Figure 4 It is an expanded structural diagram of the first embodiment of the utility model;

[0031] Figure 5 It is a structural diagram of a second embodiment of the utility model;

[0032] Figure 6 It is a partial structural diagram of the second embodiment of the utility model;

[0033] Figure 7 It is an expanded structural diagram of the second embodiment of the utility model embodiment;

[0034] Figure 8 It is a structural diagram of the third embodiment of the utility model;

[0035] Fig. 9 It is a partial structural diagram of the third embodiment of the utility model;

[0036] Fig.10 It is an expanded structural diagram of the third embodiment of the utility model embodiment.

[0037] Description of reference numerals in the figures:

[0038] 1. Chassis steering assembly; 11. Oil pump;

[0039] 2. Chassis power components;

[0040] 3. Power selection components;

[0041] 31. first valve assembly; 311. three-way ball valve; 312. first valve port; 313. second valve port; 314. third valve port; 315. monitoring assembly;

[0042] 32, second valve assembly; 321, valve core; 3211, first hydraulic channel; 3212, second hydraulic channel; 322, spring; 323, pressure delivery pipe; 324, fourth valve port; 325, fifth valve port; 326, sixth valve port;

[0043] 33, first solenoid valve; 331, third hydraulic channel; 332, fourth hydraulic channel;

[0044] 34. Second solenoid valve; 341. Hand brake signal generating device;

[0045] 35. First one-way valve;

[0046] 36. Second one-way valve;

[0047] 37. Parking signal generating device;

[0048] 4. Install the drive assembly. DETAILED DESCRIPTION

[0049] In order to make the content of the utility model more clearly understood, the utility model is further described below based on specific embodiments in combination with the accompanying drawings.

[0050] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like used herein to indicate directions or positional relationships are based on directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. Unless otherwise specified, "plurality" means two or more.

[0051] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0052] like Figure 1 As shown, the embodiment of the present application provides a single-power upper mounting system for a garbage truck, including a chassis steering assembly 1, a chassis power assembly 2, a power selection assembly 3 and an upper mounting drive assembly 4;

[0053] The chassis steering assembly 1 is connected to the chassis power assembly 2, and the chassis steering assembly 1 is also connected to the upper body drive assembly 4 through the power selection assembly 3. The chassis power assembly 2 is used to provide power to the chassis steering assembly 1 and the upper body drive system. The chassis steering assembly 1 is used to assist the garbage truck in chassis steering during driving. The upper body drive assembly 4 is used to assist the garbage truck in completing upper body lifting, flipping, and opening. The power selection assembly 3 is used to transfer the power provided by the chassis power assembly 2 to the chassis steering assembly 1 or the upper body drive assembly 4.

[0054] This embodiment effectively improves power utilization efficiency and operational flexibility by connecting the chassis steering assembly with the chassis power assembly and distributing power to the upper drive assembly or the chassis steering assembly through the power selection assembly, which not only reduces energy waste but also ensures that power is effectively utilized when needed.

[0055] This embodiment reduces the need for multiple power systems by integrating the chassis power assembly and the upper body drive assembly into a single power source design, thereby reducing manufacturing and maintenance costs, reducing the weight of the vehicle, and thus improving overall economy and operational efficiency.

[0056] In this embodiment, the chassis power assembly is composed of a motor and an oil pump, which are used to provide power; the chassis steering assembly is a component for chassis steering; the power selection assembly is a newly added component oil switching assembly, which is mainly used to supply the chassis power unit oil to the upper body when parking, and to ensure that the chassis steering is supplied first during the movement of the chassis; the upper body drive assembly mainly includes a lifting cylinder, a flip cylinder, and an opening cylinder, which are used to realize the upper body action.

[0057] This embodiment abandons the traditional low-voltage battery-driven upper body power unit solution, and instead connects the upper body drive component in parallel or in series into the chassis steering component, and adds a power switching component. Through the power switching component, when the chassis is parked, an oil pump is used to drive the upper body of the pure electric garbage bin transfer vehicle to complete actions such as upper body lifting, flipping, and opening the cover, and when the chassis is driving, it is ensured that the steering system gives priority to steering.

[0058] In this embodiment, after the upper drive component of the pure electric garbage bin transfer vehicle is connected in series or in parallel into the chassis steering system component, on the basis of ensuring the safety of chassis steering, the upper Zhongyuan low-voltage power pump motor power unit is cancelled, and power is no longer taken from the low-voltage battery. Instead, it is replaced by the chassis high-voltage direct drive motor, which effectively avoids the accelerated aging and disability of the low-voltage battery under long-term high-load operation and the instantaneous burning of the low-voltage fuse when the low-voltage power unit is started, which affects normal operation. At the same time, it optimizes the resource allocation of the whole vehicle, reduces one power unit, and has a high degree of integration and good economy. Both in early manufacturing and later operation, it can greatly reduce costs and greatly improve customer experience.

[0059] Optionally, the chassis steering assembly 1 includes an oil pump 11, and the oil pump 11 is used to provide high-pressure oil.

[0060] In this embodiment, the chassis steering assembly 1 includes an oil pump 11 for providing high-pressure oil. The use of a high-pressure oil pump can ensure stable performance even in heavy-load or high-demand steering operations, thereby improving the vehicle's handling and response speed.

[0061] like Figures 2 to 4 In the first embodiment shown, optionally, the power selection assembly 3 includes a first valve assembly 31 , and the first valve assembly 31 is used to switch the flow direction of the high-pressure oil to determine whether the oil pressure is sent to the chassis steering assembly 1 or the upper body drive assembly 4 .

[0062] In this embodiment, the first valve assembly 31 included in the power selection assembly 3 is responsible for switching the flow direction of the high-pressure oil, allowing the operator to decide whether to send the oil pressure to the chassis steering assembly 1 or the upper body drive assembly 4 according to actual needs. This setting enables the garbage truck to switch seamlessly between steering and upper body operations, thereby improving the efficiency of resource utilization.

[0063] At the same time, by optimizing the distribution of oil pressure, energy waste is reduced and the best use of oil pressure is ensured, thereby improving the response speed and accuracy of the overall operation while also reducing energy consumption.

[0064] Optionally, the first valve assembly 31 includes a three-way ball valve 311, which is provided with a first valve port 312, a second valve port 313 and a third valve port 314, the first valve port 312 is connected to the oil pump 11, the second valve port 313 is connected to the chassis steering assembly 1, and the third valve port 314 is connected to the upper body drive assembly 4.

[0065] In this embodiment, the first valve assembly 31 includes a three-way ball valve 311, and the three-way ball valve 311 has three valve ports: the first valve port 312 is connected to the oil pump 11, the second valve port 313 is connected to the chassis steering assembly 1, and the third valve port 314 is connected to the upper body drive assembly 4. This design allows the oil flow to the steering system or the upper body operating system to be directly controlled from a single oil source, and switched as needed, thereby effectively allocating and optimizing resource usage, reducing energy loss between systems, and improving overall operating efficiency.

[0066] In addition, this configuration simplifies the structure of the hydraulic system, reduces potential failure points, and improves system reliability and ease of maintenance.

[0067] Optionally, the first valve assembly 31 further includes a monitoring assembly 315, and the monitoring assembly 315 is disposed between the first valve port 312 and the oil pump 11, and is used to monitor the conduction state of the first valve assembly 31;

[0068] Among them, before the vehicle starts, the monitoring component 315 confirms that the high-pressure oil has correctly flowed into the chassis steering component 1, and then the vehicle can start normally. If the high-pressure oil is not detected flowing into the chassis steering component 1 during startup, the vehicle start will fail immediately and a voice alarm will be issued. After adjusting the first valve component 31 to the second valve port 313 and confirming with the monitoring component 315, the vehicle can try to start again and drive normally.

[0069] The monitoring component 315 introduced in this embodiment provides a key safety feature for the first valve component 31, ensuring that the high-pressure oil has correctly flowed into the chassis steering component 1 before the vehicle is started, ensuring that the vehicle can only be started when the hydraulic system is fully ready, and preventing potential safety problems caused by hydraulic system failure.

[0070] If the correct flow of high-pressure oil is not detected during the starting process, the monitoring component 315 will trigger a failed start and prompt the driver to check and adjust the valve settings through a voice alarm, which not only improves the operational safety of the vehicle, but also avoids possible accidents or damages through a preventive fault detection mechanism, while also increasing the reliability of the vehicle and the manageability of maintenance.

[0071] Reference Figure 2-Figure 4In the parking operation mode, the chassis oil pump delivers high-pressure oil to the three-way ball valve. At this time, the valve switches to the third valve port, thereby directly introducing the oil pressure into the upper drive component. In the vehicle driving mode, the high-pressure oil enters the three-way ball valve through the chassis oil pump again. At this time, the valve switches to the second valve port, allowing the high-pressure oil to flow into the chassis steering gear to ensure the normal steering and driving safety of the vehicle.

[0072] To further ensure driving safety, the system adds a monitoring component at the second valve port output of the three-way ball valve. The monitoring component can detect and confirm whether the oil pressure is correctly introduced into the chassis steering gear. Before the vehicle starts, it will automatically perform a driving preparation check and rely on the monitoring component to confirm the oil pressure. If the correct turn signal is not detected, the vehicle will not be able to start, and the system will prompt the driver through a voice alarm to check and correctly adjust the three-way ball valve to the chassis steering gear position. Only after receiving the correct turn signal can the vehicle try to start again and drive normally.

[0073] like Figures 5 to 7 In the second embodiment shown, optionally, the power selection component 3 includes a parking signal generating device 37, and the parking signal generating device 37 is arranged between the chassis steering component 1 and the chassis power component 2. The parking signal generating device 37 is used to send a chassis parking signal to the chassis power component when parking. The chassis power component can output high-pressure oil to the power selection component 3 only after receiving the parking signal sent by the parking signal generating device 37.

[0074] In this embodiment, the parking signal generating device 37 included in the power selection component 3 sends a parking signal when the vehicle is parked, ensuring that the chassis power system outputs high-pressure oil to the power selection component 3 only after receiving the parking signal, preventing the vehicle from mistakenly activating the hydraulic system at an inappropriate time (such as while driving), thereby avoiding possible operating errors and related safety risks.

[0075] In addition, the linkage between the parking signal generating device 37 and the chassis power assembly 2 in this embodiment also helps to ensure that the vehicle is in a completely stopped state before starting the hydraulic operation, further increasing the safety and reliability of the operation process.

[0076] Optionally, the power selection assembly 3 further includes a second valve assembly 32, the second valve assembly 32 includes a valve core 321, a spring 322, a pressure delivery pipe 323, a fourth valve port 324, a fifth valve port 325 and a sixth valve port 326, the fourth valve port 324 is connected to the oil pump 11, the fifth valve port 325 is connected to the chassis steering assembly 1, the sixth valve port 326 is connected to the upper body drive assembly 4, the chassis steering assembly 1 provides oil pressure to the valve core 321 through the pressure delivery pipe 323, the spring 322 is connected to the valve core 321, and is used to provide pressure in the same direction as the pressure delivery pipe 323;

[0077] The valve core 321 includes a first hydraulic channel 3211 and a second hydraulic channel 3212, wherein the first hydraulic channel 3211 is used to connect the fourth valve port 324, the fifth valve port 325 and the sixth valve port 326, and the second hydraulic channel 3212 is used to connect the fourth valve port 324 and the fifth valve port 325;

[0078] When the garbage truck stops and is in operation, the parking signal generating device 37 sends a parking signal to the chassis power assembly 2, and the chassis power assembly 2 drives the oil pump 11 to deliver high-pressure oil to the second valve assembly 32 through the chassis steering assembly 1. At this time, the chassis steering assembly 1 is in a stationary state, and the first pressure to the right relative to the valve core 321 is not generated by the pressure delivery pipe 323 on the valve core 321. The elastic force of the chassis steering assembly 1 and the spring 322 is less than the second pressure to the left relative to the valve core 321 generated by the upper body drive assembly 4 on the valve core 321, and the valve core 321 moves to the left. The fourth valve port 324 is connected with the fifth valve port 325 and the sixth valve port 326 through the first hydraulic channel 3211.

[0079] When the garbage truck stops and is in a driving state, the parking signal generating device 37 does not send a parking signal to the chassis power assembly 2, and the chassis power assembly 2 drives the oil pump 11 to deliver high-pressure oil to the second valve assembly 32 through the chassis steering assembly 1. At this time, the chassis steering assembly 1 is in a working state, and a first pressure to the right relative to the valve core 321 is generated on the valve core 321 through the pressure delivery pipe 323. The elastic force of the chassis steering assembly 1 and the spring 322 is greater than the second pressure to the left relative to the valve core 321 generated by the upper drive assembly 4 on the valve core 321. The valve core 321 moves to the right, and the fourth valve port 324 is connected to the fifth valve port 325 through the second hydraulic channel 3212.

[0080] The second valve assembly 32 included in this embodiment provides a highly flexible and precise oil pressure regulation mechanism, so that the oil pump 11 can automatically adjust the flow direction of the high-pressure oil according to the operating state of the garbage truck (operating or driving). This automatic flow direction adjustment is achieved through the valve core 321, and the valve core moves according to the interaction between the oil pressure from the chassis steering assembly 1 and the reverse pressure of the spring 322, ensuring that the oil flow is correctly distributed in the operating and driving states. When the vehicle is parked and in the operating state, the oil pressure supplies oil to the chassis steering assembly and the upper drive assembly at the same time through the first hydraulic channel 3211, and in the driving state, the oil flow only supplies oil to the chassis steering assembly through the second hydraulic channel 3212, thereby optimizing energy use and enhancing the efficiency and response speed of the system.

[0081] Reference Figure 5-Figure 7 Specifically, in this embodiment, during parking operation, the high-pressure oil from the oil pump enters the second valve assembly. In the pressure delivery pipe, the chassis steering assembly provides the valve core with an oil pressure of PLS, and the spring provides an F spring in the same direction as the pressure delivery pipe. The upper body drive assembly generates P1 to the left of the valve core relative to the valve core, and the chassis steering assembly generates P2 to the right of the valve core relative to the valve core. At this time, the control pressure on both sides of the valve core in the second valve assembly is as follows:

[0082] P1>P2+PLS+F bullet

[0083] The valve core moves to the left and works from the right position. The high-pressure oil of the oil pump flows from the sixth valve port into the upper drive assembly of the pure electric garbage bin transfer vehicle to complete the garbage bin collection tasks such as opening the cover, flipping, and lifting.

[0084] When the vehicle is running, the chassis power assembly starts to work, and the high-pressure oil from the oil pump enters the second valve assembly. However, the chassis steering assembly is in motion at this time, and the load pressure P2 is not zero. At this time, the control pressure on both sides of the valve core of the second valve assembly is as follows:

[0085] P1< P2+PLS+F bullet

[0086] The valve core of the second valve assembly maintains the left position, and the high-pressure oil from the oil pump enters the chassis steering assembly from the fifth valve port to control the chassis steering action.

[0087] like Figures 8 to 10In the third embodiment shown, optionally, the power selection component 3 includes a first solenoid valve 33 and a second solenoid valve 34, the first solenoid valve 33 includes a third hydraulic channel 331 and a fourth hydraulic channel 332, the third hydraulic channel 331 is used to connect the chassis steering component 1 and the chassis power component 2, the fourth hydraulic channel 332 is used to connect the upper body drive component 4 and the chassis power component 2, the second solenoid valve 34 is connected to the first solenoid valve 33, and is used to detect the oil pressure from the first solenoid valve 33, when the oil pressure is greater than the set value, the second solenoid valve 34 is opened;

[0088] When the garbage truck is in a parking state, the parking signal generating device 37 sends a parking signal to the first solenoid valve 33, the first solenoid valve 33 is energized, and switches to the fourth hydraulic channel 332, the upper body drive assembly 4 is connected with the chassis power assembly 2, and when the second solenoid valve 34 detects that the oil pressure from the first solenoid valve 33 is greater than the set value, the second solenoid valve 34 is opened, and the upper body drive assembly 4 starts to assist the garbage truck to complete the upper body lifting, turning, and opening the cover;

[0089] When the garbage truck is in driving state, the parking signal generating device 37 does not send a parking signal to the first solenoid valve 33, the first solenoid valve 33 loses power, switches to the third hydraulic channel 331, the chassis steering assembly 1 is connected with the chassis power assembly 2, and the chassis steering assembly 1 starts to control the chassis steering of the garbage truck during driving.

[0090] The first solenoid valve 33 and the second solenoid valve 34 introduced in this embodiment can automatically switch the oil pressure channel according to the running state of the vehicle (parking or driving), ensuring that the oil pressure can be correctly supplied to the chassis steering component or the upper body drive component when needed: in the parking state, the first solenoid valve 33 responds to the parking signal and switches to the hydraulic channel connected to the upper body drive component, so that the upper body operations such as lifting, flipping and opening the cover can be carried out smoothly; while in the driving state, the same valve will automatically switch to the channel supporting the chassis steering to ensure the safety and stability of driving. The role of the second solenoid valve 34 further ensures that the oil pressure is at an appropriate level, increasing the reliability and efficiency of the system.

[0091] Optionally, the power selection component 3 also includes a first one-way valve 35 and a second one-way valve 36, wherein the first one-way valve 35 is arranged between the chassis steering component 1 and the chassis power component 2, and the second one-way valve 36 is arranged between the upper body drive component 4 and the first solenoid valve 33, and the first one-way valve 35 and the second one-way valve 36 are used to prevent high-pressure oil backflow.

[0092] In this embodiment, the first one-way valve 35 and the second one-way valve 36 included are designed to prevent the backflow of high-pressure oil and ensure that the oil pressure flows in one direction in the system, which can effectively avoid potential damage or system failure caused by oil pressure backflow, especially when the system is interrupted or the working mode is changed. By ensuring the consistency and correct direction of the oil flow, the reliability of the system is improved, the maintenance requirements and potential system failures are reduced, which is very important to ensure the safety of the garbage truck during operation and driving.

[0093] Optionally, a handbrake signal generating device 341 is further provided on the second solenoid valve 34, and the handbrake signal generating device 341 is used to generate a handbrake signal;

[0094] The second solenoid valve 34 can be powered only when it detects a handbrake signal.

[0095] In this embodiment, the handbrake signal generating device 341 provided on the second solenoid valve 34 ensures that the second solenoid valve 34 is energized and activated only when the handbrake signal is detected, so that the activation and operation of the hydraulic system strictly depends on whether the vehicle has been safely stopped and the handbrake has been correctly applied, thereby preventing the vehicle from misoperating the hydraulic system when in a potentially dangerous moving state, reducing the risk of accidents, ensuring operational safety during operation, and thus improving the reliability of the entire system and user safety.

[0096] Reference Figure 8-10 In this embodiment, when parking, the two-position four-way solenoid valve A in the conversion valve block 4 receives the electrical signal DT1, the valve core of the two-position four-way solenoid reversing valve A moves to the left and works from the right position, the high-pressure oil of the oil pump enters the valve block from the port b of the two-position four-way reversing valve, the solenoid overflow valve B is energized, and the system pressure is established to complete the upper installation of opening the cover, flipping, lifting and other garbage collection tasks.

[0097] When the vehicle is running, after the high-pressure oil from the oil pump enters the first solenoid valve, the high-pressure oil from the oil pump directly enters the chassis steering assembly through the third hydraulic channel to ensure normal steering of the chassis.

[0098] At the same time, in order to ensure the stability of chassis steering, this scheme connects the newly added first solenoid valve and the second solenoid valve in series into the chassis steering assembly. The second solenoid valve string is linked to the chassis handbrake pull-up signal, that is, when the handbrake is not pulled up, the second solenoid valve string shall not be energized, and the third hydraulic channel of the conversion valve block is connected to the chassis steering assembly to ensure that even if the first solenoid valve fails, the high-pressure oil of the oil pump can directly enter the chassis steering assembly to ensure chassis steering.

[0099] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A single-power loading system for a garbage truck, characterized in that: It comprises a chassis steering assembly (1), a chassis power assembly (2), a power selection assembly (3) and a body drive assembly (4); The chassis steering assembly (1) is connected to the chassis power assembly (2), and the chassis steering assembly (1) is also connected to the upper body drive assembly (4) through the power selection assembly (3). The chassis power assembly (2) is used to provide power to the chassis steering assembly (1) and the upper body drive system. The chassis steering assembly (1) is used to assist the garbage truck in chassis steering during driving. The upper body drive assembly (4) is used to assist the garbage truck in completing upper body lifting, flipping, and opening. The power selection assembly (3) is used to transfer the power provided by the chassis power assembly (2) to the chassis steering assembly (1) or the upper body drive assembly (4).

2. A single-power loading system for a garbage truck according to claim 1, characterized in that: The chassis steering assembly (1) comprises an oil pump (11), and the oil pump (11) is used to provide high-pressure oil.

3. A single-power loading system for a garbage truck according to claim 2, characterized in that: The power selection component (3) comprises a first valve component (31), wherein the first valve component (31) is used to switch the flow direction of high-pressure oil and determine whether the oil pressure is sent to the chassis steering component (1) or the upper body drive component (4).

4. A single-power loading system for a garbage truck according to claim 3, characterized in that: The first valve assembly (31) comprises a three-way ball valve (311), the three-way ball valve (311) being provided with a first valve port (312), a second valve port (313) and a third valve port (314), the first valve port (312) being connected to the oil pump (11), the second valve port (313) being connected to the chassis steering assembly (1), and the third valve port (314) being connected to the upper body drive assembly (4).

5. A single-power loading system for a garbage truck according to claim 4, characterized in that: The first valve component (31) further comprises a monitoring component (315), wherein the monitoring component (315) is arranged between the first valve port (312) and the oil pump (11) and is used to monitor the conduction state of the first valve component (31); Before the vehicle is started, the monitoring component (315) confirms that the high-pressure oil has correctly flowed into the chassis steering component (1), and only then can the vehicle be started normally. If the high-pressure oil is not detected to flow into the chassis steering component (1) during startup, the vehicle startup will fail immediately and a voice alarm will be issued. The first valve component (31) is adjusted to the second valve port (313), and after confirmation by the monitoring component (315), the vehicle can try to start again and drive normally.

6. A single-power upper loading system for a garbage truck according to claim 2, characterized in that: The power selection component (3) comprises a parking signal generating device (37), wherein the parking signal generating device (37) is arranged between the chassis steering component (1) and the chassis power component (2), and the parking signal generating device (37) is used to send a chassis parking signal to the chassis power component when parking. The chassis power component can output high-pressure oil to the power selection component (3) only after receiving the parking signal sent by the parking signal generating device (37).

7. A single-power upper loading system for a garbage truck according to claim 6, characterized in that: The power selection assembly (3) further comprises a second valve assembly (32), the second valve assembly (32) comprising a valve core (321), a spring (322), a pressure delivery pipe (323), a fourth valve port (324), a fifth valve port (325) and a sixth valve port (326), the fourth valve port (324) being connected to the oil pump (11), the fifth valve port (325) being connected to the chassis steering assembly (1), the sixth valve port (326) being connected to the upper body drive assembly (4), the chassis steering assembly (1) providing oil pressure to the valve core (321) via the pressure delivery pipe (323), the spring (322) being connected to the valve core (321) for providing pressure in the same direction as the pressure delivery pipe (323); The valve core (321) comprises a first hydraulic channel (3211) and a second hydraulic channel (3212), wherein the first hydraulic channel (3211) is used to connect the fourth valve port (324), the fifth valve port (325) and the sixth valve port (326), and the second hydraulic channel (3212) is used to connect the fourth valve port (324) and the fifth valve port (325); When the garbage truck stops and is in operation, the parking signal generating device (37) sends a parking signal to the chassis power assembly (2), and the chassis power assembly (2) drives the oil pump (11) to deliver high-pressure oil to the second valve assembly (32) through the chassis steering assembly (1). At this time, the chassis steering assembly (1) is in a stationary state, and no first pressure to the right relative to the valve core (321) is generated on the valve core (321) through the pressure delivery pipe (323). The elastic force of the chassis steering assembly (1) and the spring (322) is smaller than the second pressure to the left relative to the valve core (321) generated by the upper assembly drive assembly (4). The valve core (321) moves to the left, and the fourth valve port (324) is connected to the fifth valve port (325) and the sixth valve port (326) through the first hydraulic channel (3211). When the garbage truck is parked and in a driving state, the parking signal generating device (37) does not send a parking signal to the chassis power assembly (2), and the chassis power assembly (2) drives the oil pump (11) to deliver high-pressure oil to the second valve assembly (32) through the chassis steering assembly (1). At this time, the chassis steering assembly (1) is in a working state, and a first pressure to the right relative to the valve core (321) is generated on the valve core (321) through the pressure delivery pipe (323). The elastic force of the chassis steering assembly (1) and the spring (322) is greater than a second pressure to the left relative to the valve core (321) generated by the upper body drive assembly (4), and the valve core (321) moves to the right. The fourth valve port (324) is connected to the fifth valve port (325) through the second hydraulic channel (3212).

8. A single-power loading system for a garbage truck according to claim 6, characterized in that: The power selection component (3) comprises a first solenoid valve (33) and a second solenoid valve (34); the first solenoid valve (33) comprises a third hydraulic channel (331) and a fourth hydraulic channel (332); the third hydraulic channel (331) is used to connect the chassis steering component (1) and the chassis power component (2); the fourth hydraulic channel (332) is used to connect the upper body drive component (4) and the chassis power component (2); the second solenoid valve (34) is connected to the first solenoid valve (33) and is used to detect the oil pressure from the first solenoid valve (33); when the oil pressure is greater than a set value, the second solenoid valve (34) is opened; When the garbage truck is in a parking state, the parking signal generating device (37) sends a parking signal to the first solenoid valve (33), the first solenoid valve (33) is energized, and switches to the fourth hydraulic channel (332), the upper body drive component (4) and the chassis power component (2) are connected, and when the second solenoid valve (34) detects that the oil pressure from the first solenoid valve (33) is greater than a set value, the second solenoid valve (34) opens, and the upper body drive component (4) starts to assist the garbage truck to complete upper body lifting, flipping, and cover opening; When the garbage truck is in a driving state, the parking signal generating device (37) does not send a parking signal to the first solenoid valve (33), the first solenoid valve (33) loses power, switches to the third hydraulic channel (331), the chassis steering assembly (1) is connected to the chassis power assembly (2), and the chassis steering assembly (1) starts to control the chassis steering of the garbage truck during driving.

9. A single-power loading system for a garbage truck according to claim 8, characterized in that: The power selection assembly (3) further comprises a first one-way valve (35) and a second one-way valve (36); the first one-way valve (35) is arranged between the chassis steering assembly (1) and the chassis power assembly (2); the second one-way valve (36) is arranged between the upper body drive assembly (4) and the first solenoid valve (33); the first one-way valve (35) and the second one-way valve (36) are used to prevent high-pressure oil from flowing back.

10. A single-power loading system for a garbage truck according to claim 9, characterized in that: The second solenoid valve (34) is also provided with a handbrake signal generating device (341), and the handbrake signal generating device (341) is used to generate a handbrake signal; The second solenoid valve (34) can only be powered when it detects a handbrake signal.

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