Valve group for digitalized construction bulldozer

Abstract

The application relates to the technical field of digital construction equipment, in particular to a valve group for a digital construction bulldozer, which is characterized in that a valve body mounting plate is provided with a shuttle valve for automatic switching of an oil circuit, the valve body mounting plate is connected and fixed to the digital construction bulldozer through bolts, an electric proportional pressure reducing valve group is fixed on the valve body mounting plate, the electric proportional pressure reducing valve group is connected with the shuttle valve, and is used for receiving signals transmitted by the digital bulldozer and automatically adjusting hydraulic pressure. The application has the effect that the digital construction bulldozer can be conveniently controlled when being remotely controlled.

Description

Technical Field

[0001] This application relates to the field of digital construction equipment technology, and in particular to a valve assembly for a digital construction bulldozer. Background Technology

[0002] Digital construction represents the future of construction methods. Compared to manually operated construction equipment, using digital construction equipment can reduce the physical labor of workers.

[0003] In related technologies, digital construction bulldozers are remotely controlled by adding digital construction valve groups and corresponding electronic control systems to achieve digital construction and improve work efficiency. When modifying the valve groups, the original valve group operation mode and the original vehicle control system of the bulldozer will be changed to a certain extent.

[0004] Regarding the aforementioned technologies, the change in the original operating mode during the digital construction valve assembly modification process brings certain inconveniences to remote control, making it difficult for personnel to operate according to the previous operating methods, which is quite inconvenient. Utility Model Content

[0005] To address the problems in the aforementioned related technologies, this application provides a valve assembly for a digital construction bulldozer.

[0006] The valve assembly for a digital construction bulldozer provided in this application adopts the following technical solution:

[0007] The valve assembly for a digital construction bulldozer provided in this application adopts the following technical solution:

[0008] A valve assembly for a digital construction bulldozer includes:

[0009] The valve body mounting plate is equipped with a shuttle valve for automatic oil circuit switching. The valve body mounting plate is connected and fixed to the digital construction bulldozer by bolts.

[0010] An electro-proportional pressure reducing valve assembly is fixedly mounted on the valve body mounting plate. The electro-proportional pressure reducing valve assembly is connected to the shuttle valve and is used to receive signals transmitted by the digital bulldozer and automatically adjust the hydraulic pressure.

[0011] By adopting the above technical solution, when the shuttle valve is installed on the digital bulldozer, the oil circuit is automatically switched through the shuttle valve. This allows the hydraulic system to be automatically adjusted through the electro-proportional pressure reducing valve group without the need for modification of the oil circuit. Compared with manually driving the bulldozer, this can reduce the amount of manual labor and help improve construction efficiency.

[0012] This allows for independent adjustment and control of the pressure system via an electro-proportional pressure reducing valve when remotely operating a digital construction bulldozer, without requiring modification to the control system. This facilitates remote control of the pressure system by personnel using conventional methods, helping to reduce manual labor.

[0013] Optionally, the valve body mounting plate is further provided with a hose interface for receiving hydraulic oil, and the shuttle valve is connected between the electro-proportional pressure reducing valve and the hose interface.

[0014] By adopting the above technical solution, the electro-proportional pressure reducing valve, the shuttle valve, and the hose interface work together to enable the external hydraulic pressure to automatically switch the oil circuit after passing through the shuttle valve, and to keep the oil pressure on both sides of the shuttle valve the same, thereby reducing the impact of oil pressure imbalance, and transmitting the hydraulic energy to the corresponding mechanism of the digital bulldozer through the hose interface connection.

[0015] Optionally, the hose interface includes a P interface, a T interface, a hydraulic main valve control interface, and a pilot control interface. The P interface is connected to the pilot oil source of the digital bulldozer, the T interface is connected to the hydraulic oil tank of the digital bulldozer, and the pilot control interface is connected to the pilot control oil circuit of the digital bulldozer.

[0016] When the oil source enters the shuttle valve through the P interface, the electro-proportional pressure reducing valve controls the pilot oil circuit pressure by the current magnitude to control the flow rate of the digital bulldozer cylinder. The shuttle valve automatically switches the oil circuit, making manual control and remote control independent of each other.

[0017] By adopting the above technical solution, multiple different hose interfaces are connected to the corresponding pilot oil source and oil cylinder, transmitting different hydraulic pressures to the corresponding manual control and remote control oil circuits. This achieves hydraulic pressure transmission without requiring modification of the original manual control hydraulic system of the digital bulldozer.

[0018] Optionally, the electro-proportional pressure reducing valve group may have multiple electro-proportional pressure reducing valves, and the number of shuttle valves corresponds to the number of electro-proportional pressure reducing valves.

[0019] By adopting the above technical solution, multiple electro-proportional pressure reducing valves and corresponding shuttle valves cooperate with each other to adapt to the multiple oil circuits required by the digital bulldozer, thereby realizing the control of the hydraulic system of the digital bulldozer.

[0020] Optionally, the maximum input flow rate of the hose interface is 30 liters per minute.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. When the shuttle valve is installed on a digital bulldozer, the oil circuit is automatically switched through the shuttle valve. This allows the hydraulic system to be automatically adjusted through the electro-proportional pressure reducing valve group without the need for modification of the oil circuit. Compared with manually driving the bulldozer, this can reduce the amount of manual labor and help improve construction efficiency.

[0023] 2. The electro-proportional pressure reducing valve, shuttle valve, and hose interface work together to enable the external hydraulic pressure to automatically switch the oil circuit after passing through the shuttle valve, and to keep the oil pressure on both sides of the shuttle valve the same, thereby reducing the impact of oil pressure imbalance, and transmitting hydraulic energy to the corresponding mechanism of the digital bulldozer through the hose interface.

[0024] 3. Multiple electro-proportional pressure reducing valves and corresponding shuttle valves work together to adapt to the multiple oil circuits required by the digital bulldozer, thereby realizing the control of the hydraulic system of the digital bulldozer. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the valve assembly for the digital construction bulldozer in this application.

[0026] Figure 2 This is an exploded view of the valve body mounting plate and the electro-proportional pressure reducing valve assembly in this application.

[0027] Figure 3 yes Figure 2 A sectional view taken along the AA direction.

[0028] Figure 4 This is a front view of the valve assembly for the digital construction bulldozer in this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Valve body mounting plate; 11. Hose interface; 111. P interface; 112. T interface; 113. Hydraulic main valve control interface; 114. Pilot control interface; 12. Connecting plate; 121. Mounting hole; 2. Electro-proportional pressure reducing valve assembly; 21. Electro-proportional pressure reducing valve; 3. Shuttle valve. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0031] This application discloses a valve assembly for a digital construction bulldozer. (Refer to...) Figure 1-3The valve assembly for the digital construction bulldozer includes a valve body mounting plate 1 and an electro-proportional pressure reducing valve assembly 2. The electro-proportional pressure reducing valve assembly 2 is fixedly installed on the valve body mounting plate 1. The valve body mounting plate 1 has corresponding control oil circuits and is equipped with a shuttle valve 3 connected to the oil circuits. When the oil source enters the oil circuits, the shuttle valve 3 can automatically switch the oil circuits. The electro-proportional pressure reducing valve assembly 2 is connected to the shuttle valve 3. When the digital bulldozer sends a signal to the electro-proportional pressure reducing valve 21, the electro-proportional pressure reducing valve assembly 2 performs automatic hydraulic adjustment. This makes it less likely to cause changes in operating habits due to modifications to the hydraulic system, and helps personnel to operate or automatically control the machine through remote control, thereby improving work efficiency.

[0032] Reference Figure 1 and Figure 2 A hose interface 11 is provided on the valve body mounting plate 1, which is connected to the shuttle valve 3. This allows the digital bulldozer to establish hydraulic transmission between the hose interface 11 and the valve assembly. Correspondingly, the shuttle valve 3 is located between the hose interface 11 and the electro-proportional pressure reducing valve 21. This prevents a large pressure difference between the two sides when external hydraulic pressure enters the electro-proportional pressure reducing valve through the shuttle valve 3, helping to maintain a stable pressure when hydraulic pressure enters the valve assembly. In this embodiment, the maximum input flow rate of the hose interface 11 is 30 liters per minute to meet the input flow rate required by the corresponding hydraulic system design.

[0033] Reference Figure 2 A connecting plate 12 is also fixedly installed on one side surface of the valve body mounting plate 1. The connecting plate 12 has corresponding connecting holes 121. The connecting holes 121 are fitted with bolts and nuts to install and fix the connecting plate and the digital bulldozer.

[0034] Reference Figure 2 and Figure 4It should be further explained that the hose interface 11 includes a P interface 111, a T interface 112, a hydraulic main valve control interface 113, and a pilot control interface 114. Among them, the P interface 111 is connected to the pilot oil source on the digital bulldozer, the T interface 112 is connected to the hydraulic oil tank on the digital bulldozer, and the pilot control interface 114 is connected to the pilot control oil circuit on the digital bulldozer. When the oil source enters the shuttle valve 3 through the P interface 111, the electro-proportional pressure reducing valve 21 controls the pressure of the pilot oil circuit by the current to control the flow rate of the digital bulldozer cylinder. The shuttle valve 3 automatically switches the oil circuit, so that manual control and remote control are independent of each other. It should be noted that there are four hydraulic main valve control interfaces 113, namely interfaces 01, 02, 03, and 04. These four interfaces 113 are connected to the hydraulic main valve control ports on the digital bulldozer. There are also four pilot control interfaces 114, namely interfaces HD1, HD2, HD3, and HD4. These four interfaces are connected to the pilot control oil circuit of the digital bulldozer. The digital bulldozer can provide oil circuit working pressure to the valve body through the pilot oil circuit, protecting the oil circuit safety of the pilot system. The specific oil circuit structure of the pilot oil circuit is existing technology in the field of bulldozer hydraulics and is not the focus of this application's inventive concept; therefore, it will not be described in detail.

[0035] Reference Figure 4 The electro-proportional pressure reducing valve group 2 is provided with multiple electro-proportional pressure reducing valves 21. In this embodiment, the number of electro-proportional pressure reducing valves 21 is described as four. In other embodiments, the corresponding number can be set according to the actual oil circuit needs. Correspondingly, the number of shuttle valves 3 corresponds to the number of electro-proportional pressure reducing valves 21, so that each electro-proportional pressure reducing valve 21 can be connected to a corresponding shuttle valve 3.

[0036] The implementation principle of a valve group for a digital construction bulldozer in this application embodiment is as follows: by using the electro-proportional pressure reducing valve group 2 as a remote control valve group, the electro-proportional pressure reducing valve group 2 can control the oil circuit formed by the original shuttle valve 3, so that there is no need to modify the hydraulic oil circuit of the valve group, reducing the change in the control method caused by the change of the oil circuit, and facilitating the remote control of the digital bulldozer.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A valve assembly for a digital construction bulldozer, characterized in that, include: The valve body mounting plate (1) is equipped with a shuttle valve (3) for automatic oil circuit switching. The valve body mounting plate (1) is then connected and fixed to the digital construction bulldozer by bolts. An electro-proportional pressure reducing valve assembly (2) is fixedly mounted on the valve body mounting plate (1). The electro-proportional pressure reducing valve assembly (2) is connected to the shuttle valve (3) and is used to receive signals transmitted by the digital bulldozer and automatically adjust the hydraulic pressure. The valve body mounting plate (1) is also provided with a hose interface (11), which is used to receive hydraulic oil, and the shuttle valve (3) is connected between the electro-proportional pressure reducing valve (21) and the hose interface (11).

2. The valve assembly for a digital construction bulldozer according to claim 1, characterized in that: The hose interface (11) includes a P interface (111), a T interface (112), a hydraulic main valve control interface (113), and a pilot control interface (114). The P interface (111) is connected to the pilot oil source of the digital bulldozer, the T interface (112) is connected to the hydraulic oil tank of the digital bulldozer, and the pilot control interface (114) is connected to the pilot control oil circuit of the digital bulldozer. When the oil source enters the shuttle valve (3) through the P interface (111), the electro-proportional pressure reducing valve (21) controls the pilot oil circuit pressure by the current magnitude to control the flow rate of the digital bulldozer cylinder. The shuttle valve (3) automatically switches the oil circuit, making manual control and remote control independent of each other.

3. The valve assembly for a digital construction bulldozer according to claim 1, characterized in that: The electro-proportional pressure reducing valve group (2) has multiple electro-proportional pressure reducing valves (21), and the number of shuttle valves (3) corresponds to the number of electro-proportional pressure reducing valves (21).

4. The valve assembly for a digital construction bulldozer according to claim 1, characterized in that: The maximum input flow rate of the hose interface (11) is 30 liters per minute.

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