Integrated valve block and mine dump truck

Abstract

The utility model discloses integrated valve group, include: valve body, the valve body is integrated with the steering module and brake module simultaneously, and the hydraulic pressure oil circuit is arranged in the valve body, wherein, the steering module at least includes pressure relief valve, and the pressure relief valve is installed on one side of valve body, and the valve body still is provided with the steering accumulator oil port for intercommunication steering accumulator, and the pressure relief valve is linked together with the steering accumulator oil port through the hydraulic pressure oil circuit, brake module at least includes parking brake control valve, and the parking brake control valve is installed on one side of valve body, and the valve body still is provided with the parking brake oil outlet, and the parking brake control valve is linked together with the parking brake oil outlet through the hydraulic pressure oil circuit. The integrated valve group provided by the embodiment reduces the quantity of required valve group and connecting pipeline by integrating the steering module and brake module on the valve body, improves the integration of steering module and brake module, reduces the installation space required, and also facilitates the installation, debugging and maintenance of integrated valve group.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic technology, and in particular to an integrated valve group and a mining dump truck. Background Technology

[0002] Mining dump trucks are heavy-duty transport vehicles specifically designed for environments such as mines, quarries, and large-scale earthwork projects. They are mainly used for transporting and unloading bulk materials such as ore, coal, and sand. Due to the special characteristics of mining dump trucks, their steering and braking functions are generally achieved through hydraulic systems.

[0003] Currently, the steering and braking systems of mining dump trucks are designed with separate piping, meaning the steering and braking lines are independent. This results in a large number of valve groups and connecting pipes in the hydraulic system, causing considerable difficulties for the installation, commissioning, and maintenance of the hydraulic system. Furthermore, this design leads to a larger overall size of the hydraulic system, requiring more installation space. Utility Model Content

[0004] In view of some problems and defects in the prior art, this utility model discloses an integrated valve group and a mining dump truck to solve the problems of large installation space requirements, difficult maintenance and high maintenance costs in the existing hydraulic systems of mining dump trucks.

[0005] Specifically, an integrated valve assembly provided in this embodiment of the present invention includes: a valve body, on which a steering module and a braking module are integrated, and a hydraulic circuit is configured inside the valve body; wherein, the steering module includes at least a pressure relief valve, which is installed on one side of the valve body, and the valve body is also provided with a steering accumulator port for connecting to the steering accumulator, and the pressure relief valve and the steering accumulator port are connected through the hydraulic circuit; the braking module includes at least a parking brake control valve, which is installed on one side of the valve body, and the valve body is also provided with a parking brake outlet, and the parking brake control valve and the parking brake outlet are connected through the hydraulic circuit.

[0006] The integrated valve assembly provided in this embodiment reduces the number of valve assemblies and connecting pipes required for the steering and braking modules by integrating both the steering and braking modules onto the valve body. This improves the integration of the steering and braking modules, resulting in a more compact layout, reduced installation space requirements, and easier installation, commissioning, and maintenance of the integrated valve assembly.

[0007] In one embodiment of this utility model, a plate filter is further provided on the valve body. The plate filter is connected to the hydraulic oil circuit and is used to filter the hydraulic oil and allow the filtered hydraulic oil to flow into the hydraulic oil circuit. In the hydraulic oil circuit, the oil outlet of the plate filter is connected to the first node.

[0008] In one embodiment of the present invention, the plate filter is located on the first side of the valve body, and the pressure relief valve and the parking brake control valve are located on the second side of the valve body.

[0009] In one embodiment of this utility model, the braking module includes a pressure reducing valve, which is installed on one side of the valve body. The pressure reducing valve is connected to the parking brake control valve through the hydraulic oil circuit, and the pressure reducing valve is used to reduce the pressure of the hydraulic oil in the hydraulic oil circuit.

[0010] In one embodiment of this utility model, the parking brake control valve includes a first parking brake control valve and a second parking brake control valve connected in series. In the hydraulic circuit, the pressure reducing valve is connected between the first node and the first parking brake control valve, the first parking brake control valve is connected between the pressure reducing valve and the second parking brake control valve, and the second parking brake control valve is connected between the first parking brake control valve and the parking brake outlet.

[0011] In one embodiment of this utility model, the steering module further includes a steering control valve, which is installed on one side of the valve body. In the hydraulic circuit, the steering control valve is connected between the first node and the steering accumulator port. The pressure relief valve is connected between the steering accumulator port and the return oil tank port, and the pressure relief valve is used to release the oil pressure of the steering accumulator connected to the steering accumulator port.

[0012] In one embodiment of the present invention, the pressure relief valve includes a pressure relief handle, which is used to control the pressure relief valve to open in order to release the oil pressure of the steering accumulator.

[0013] In one embodiment of this utility model, the steering control valve includes a first steering control valve and a second steering control valve, and the steering accumulator port includes a first steering accumulator port and a second steering accumulator port. The first steering accumulator port is used to connect to the first steering accumulator, and the second steering accumulator port is used to connect to the second steering accumulator. In the hydraulic circuit, the first steering control valve and the first steering accumulator port are connected in series to form a first steering circuit, and the second steering control valve and the second steering accumulator port are connected in series to form a second steering circuit. The pressure relief valve is connected to both the first steering accumulator port and the second steering accumulator port.

[0014] In one embodiment of this utility model, the valve body is further provided with a relief valve, which is located on the first side of the valve body; wherein, in the hydraulic oil circuit, the relief valve is connected to the first node, and the relief valve is used to control the oil pressure at the first node within the range of the preset oil pressure when the oil pressure at the first node is greater than the preset oil pressure.

[0015] Another embodiment of the present invention provides a mining dump truck, which includes, for example, an integrated valve assembly as described above.

[0016] As can be seen from the above, the above-mentioned technical features of this utility model can have one or more of the following beneficial effects: The integrated valve group provided in this embodiment reduces the number of valve groups and connecting pipes required for the steering module and braking module by integrating both the steering module and braking module on the valve body, thereby improving the integration of the steering module and braking module, making the layout of the steering module and braking module more compact, reducing the required installation space, and facilitating the installation, debugging and maintenance of the integrated valve group; In addition, the plate filter is set on the valve body, which on the one hand further improves the integration of the valve body by integrating the filter on the valve body, making the structure of the valve body more compact, and on the other hand reduces the risk of hydraulic oil leakage, which is conducive to reducing maintenance costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the integrated valve assembly provided in an embodiment of the present invention.

[0019] Figure 2 Another structural schematic diagram of the integrated valve assembly provided in this embodiment of the present utility model.

[0020] Figure 3 for Figure 1 A schematic diagram of the hydraulic circuit inside the valve body. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] It should be noted that the directional terms mentioned in the embodiments of this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," and "side," are only for reference to the accompanying drawings. Therefore, the directional terms used are for the purpose of explaining and understanding this utility model, and not for limiting this utility model. For the sake of understanding and ease of description, the dimensions and thicknesses of each component shown in the drawings are arbitrarily shown, but this utility model is not limited thereto.

[0023] It is understood that when a component, such as a layer, membrane, region, or substrate, is referred to as "on" another component, the component may be directly on the other component, or there may be intermediate components present. Furthermore, in the specification, unless explicitly stated otherwise, the word "comprising" will be understood to mean including the stated component, but not excluding any other components. Additionally, in the specification, "on" means located above or below the target component, and does not mean necessarily located on top of it based on gravity.

[0024] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] [First Embodiment]

[0026] like Figure 1 and Figure 2 As shown, this embodiment of the present invention provides an integrated valve assembly 100. The integrated valve assembly 100 provided in this embodiment of the present invention, for example, integrates a steering and braking hydraulic circuit system. The integrated valve assembly 100, for example, can filter, reduce pressure, and limit pressure of the hydraulic oil, thereby fulfilling the steering and braking functions required by the mining dump truck.

[0027] For details, see Figure 1The integrated valve assembly 100 includes, for example, a valve body 1 and a plate filter 11. The valve body 1 integrates both a steering module and a braking module, and has an internal hydraulic circuit. The steering module, braking module, and hydraulic circuit together form a steering and braking hydraulic circuit system. The steering module includes at least a pressure relief valve 5, which is mounted on one side of the valve body 1. The valve body 1 also has a steering accumulator port A10 for connecting to the steering accumulator. The pressure relief valve 5 and the steering accumulator port are connected via the hydraulic circuit. The braking module includes at least a parking brake control valve 4, which is mounted on one side of the valve body 1. The valve body 1 also has a parking brake outlet P8, which is connected to the parking brake outlet P8 via the hydraulic circuit.

[0028] The integrated valve assembly provided in this embodiment reduces the number of valve assemblies and connecting pipes required for the steering and braking modules by integrating both the steering and braking modules onto the valve body. This improves the integration of the steering and braking modules, resulting in a more compact layout, reduced installation space requirements, and easier installation, commissioning, and maintenance of the integrated valve assembly.

[0029] As described above, the valve body 1 is further provided with a plate filter 11, which is connected to the hydraulic oil circuit. The plate filter 11 is used to filter the hydraulic oil and direct the filtered hydraulic oil into the hydraulic oil circuit. See also... Figure 3 , Figure 3 This is a schematic diagram showing the hydraulic circuit inside the valve body 1. In this hydraulic circuit, the outlet of the plate filter 1 is connected to the first node N1. Installing a plate filter on the valve body improves the overall integration of the valve body, making its structure more compact. It also reduces the number of connecting hoses and joints, thereby reducing the risk of hydraulic oil leakage and lowering maintenance costs.

[0030] Further, see Figure 1 The plate filter 11 is mounted on the first side of the valve body 1, for example, using spring washers and hex bolts. The pressure relief valve 5 and the parking brake control valve 4 are located on the second side of the valve body 1. This design provides ample installation space for the plate filter 1, allowing for easy disassembly and convenient replacement of the filter element. Furthermore, an oil drum can be placed directly at the bottom of the plate filter 11 away from the valve body 1 to collect waste oil, facilitating waste oil disposal for the plate filter 11.

[0031] See Figure 3In practical operation, hydraulic oil is supplied from pump outlet P. After being filtered by plate filter 11, the hydraulic oil flows from the outlet of plate filter 11 to the first node N1 of the hydraulic oil circuit, and then flows to different functional modules according to actual working needs. Among them, interface G1 and SW2 are connected to pump outlet P. For example, pressure detection devices are installed on interface G1 and SW2 to detect the oil pressure of the hydraulic oil at pump outlet P.

[0032] For details, see Figure 1 and Figure 2 The valve body 1 is provided with multiple valves, which can be opened or closed to ensure the smooth flow of the steering and braking hydraulic circuit system and enable the integrated valve group 100 to perform steering and braking functions of the mining dump truck. For example, the valve body 1 is provided with a pressure reducing valve 2, a throttle valve 3, a parking brake control valve 4, a pressure relief valve 5, and an overflow valve 6. Among them, the parking brake control valve 4 and the pressure relief valve 5 are, for example, solenoid valves. The pressure reducing valve 2 is used to reduce the pressure of the hydraulic oil in the hydraulic circuit, the parking brake control valve 4 is used to control the parking brake, the pressure relief valve 5 is used to release the pressure of the steering accumulator in the steering module, and the overflow valve 6 is used to set the safety pressure of the steering and braking hydraulic circuit system. Specifically, the pressure reducing valve 2 and the overflow valve 6 are installed on the top surface and one side of the valve body 1, for example, by hexagonal socket head cap screws. Preferably, the overflow valve 6 is installed on the side of the valve body 1 and is located on the same side as the plate filter 11. The pressure relief valve 5, throttle valve 3, and parking brake control valve 4 are mounted on the top surface of the valve body 1. This design allows all pressure adjustment points and pressure test points of the steering module and braking module to be concentrated on the valve body 1, facilitating debugging and maintenance.

[0033] As described above, the braking module includes a pressure reducing valve 2.1, which is mounted on one side of the valve body 1. The pressure reducing valve 2.1 is connected to the parking brake control valve 4 via the hydraulic oil circuit, and is used to reduce the pressure of the hydraulic oil in the hydraulic oil circuit. Specifically, the parking brake control valve 4 includes a first parking brake control valve 4.1 and a second parking brake control valve 4.2 connected in series. In the hydraulic oil circuit, the pressure reducing valve 2.1 is connected between the first node N1 and the first parking brake control valve 4.1, the first parking brake control valve 4.1 is connected between the pressure reducing valve 2.1 and the second parking brake control valve 4.2, and the second parking brake control valve 4.2 is connected between the first parking brake control valve 4.1 and the parking brake outlet P8. The first parking brake control valve 4.1 is connected to the oil return port T3 of the oil return tank via a first return check valve 7.6, and the second parking brake control valve 4.2 is connected to the oil return port T3 of the oil return tank via a second return check valve 7.5. It should be noted that both the first parking brake control valve 4.1 and the second parking brake control valve 4.2 are solenoid valves. The redundant design of two solenoid valves in series ensures successful parking brake operation. Interface g4 connects to the pressure reducing valve 2.1, which is equipped with a pressure detection device to detect the hydraulic oil pressure at the pressure reducing valve 2.1. Interfaces SW7, SW8, and g5 connect to the second parking brake control valve 4.2 and the parking brake outlet P8, respectively, and are each equipped with a pressure detection device to detect the working oil pressure of the hydraulic oil in the parking brake submodule's oil circuit.

[0034] In practical operation, the hydraulic oil is depressurized by pressure reducing valve 2.1 and then flows to the first parking brake control valve 4.1 and the second parking brake control valve 4.2, before reaching the parking brake interface P8. Under normal operating conditions, the pressure oil from the parking brake submodule returns to the return oil tank via the first parking brake control valve 4.1, the second parking brake control valve 4.2, and the first return check valve 7.6 through port T3. However, in case of parking malfunction, the pressure oil from the parking brake submodule returns to the return oil tank via the second parking brake control valve 4.2 and the second return check valve 7.5 through port T3. That is, after issuing the parking brake activation signal, if an abnormal oil pressure is detected at the first parking brake control valve 4.1 within a set time, the controller will immediately send a parking brake activation signal to the second parking brake control valve 4.2, allowing the pressure oil from the parking brake submodule to return to the return oil tank via the second parking brake control valve 4.2, thus ensuring successful parking brake operation.

[0035] That is, the parking brake submodule in this application adopts a redundant design with two solenoid valves in series. After the parking brake solenoid valve is given an action signal, if an abnormal parking pressure is detected within a set time, the controller will immediately give the redundant parking brake solenoid valve an action signal to ensure successful parking brake.

[0036] As described above, the steering module further includes a steering control valve 8, which is mounted on one side of the valve body. In the hydraulic circuit, the steering control valve 8 is connected between the first node N1 and the steering accumulator port A10. The pressure relief valve 5 is connected between the steering accumulator port A10 and the return port T3 of the oil tank. The pressure relief valve 5 is used to release the oil pressure of the steering accumulator connected to the steering accumulator port A10. The pressure relief valve 5 includes a pressure relief handle, which is used to control the opening of the pressure relief valve to release the oil pressure of the steering accumulator. Interface G3 is connected to the pressure relief valve 5 and, for example, is equipped with a pressure detection device to detect the oil pressure of the hydraulic oil at the pressure relief valve 5. By providing a pressure relief handle, maintenance personnel can easily operate the system. When it is necessary to disassemble the pipeline, the manual function of the pressure relief handle can be used to confirm that the oil pressure of the steering accumulator has been released, thereby improving the safety of the steering braking hydraulic circuit system and extending the service life of the integrated valve assembly 100.

[0037] Further, the steering control valve 8 includes a first steering control valve 8.3 and a second steering control valve 8.2, and the steering accumulator port A10 includes a first steering accumulator port A1 and a second steering accumulator port A2. The first steering accumulator port A1 is used to connect to the first steering accumulator, and the second steering accumulator port A2 is used to connect to the second steering accumulator. In the hydraulic circuit, the first steering control valve 8.3 is connected in series with the first steering accumulator port A1 to form a first steering circuit, and the second steering control valve 8.2 is connected in series with the second steering accumulator port A2 to form a second steering circuit. The pressure relief valve 5 is connected to both the first steering accumulator port A1 and the second steering accumulator port A2. Specifically, the steering module also includes a priority valve port P6, which is located on one side of the valve body 1 and connected to the first steering accumulator port A1. Interfaces G2 and SW1 are connected to the priority valve port P6, and it is equipped with a pressure detection device for detecting the hydraulic oil pressure at the priority valve port P6. The first steering control valve 8.3 and the second steering control valve 8.2 are both check valves, for example.

[0038] In practical operation, the hydraulic oil passes through the first steering control valve 8.3 to the first steering accumulator port A1, or it passes through the second steering control valve 8.2 to the second steering accumulator port A2. The hydraulic oil preferentially passes through the second steering control valve 8.2 to the second steering accumulator port A2. The pressure oil from the steering module returns to the return tank via the pressure relief valve 5 through port T3.

[0039] In one specific embodiment, the valve body 1 is further provided with a relief valve 6, which is located on the first side of the valve body 1, that is, the relief valve 6 and the plate filter 11 are located on the same side of the valve body 1. In the hydraulic circuit, the relief valve 6 is connected to the first node N1, and the relief valve 6 is used to control the oil pressure at the first node N1 within the range of the preset oil pressure when the oil pressure at the first node N1 is greater than the preset oil pressure.

[0040] In practical operation, hydraulic oil is filtered by plate filter 11 and flows from the outlet of plate filter 11 to the first node N1 of the hydraulic circuit. Relief valve 6 is connected to the first node N1, for example. The aforementioned preset oil pressure is, for example, the safety oil pressure of the steering brake hydraulic circuit system. Interface g1 and SW6 connect to the internal hydraulic circuit, which is equipped with a pressure detection device to detect the maximum operating oil pressure that the steering brake hydraulic circuit system can withstand. The safety of the steering brake hydraulic circuit system is improved by setting relief valve 6. It should be noted that the safety oil pressure of the steering brake hydraulic circuit system is, for example, less than or equal to the maximum operating oil pressure that the steering brake hydraulic circuit system can withstand, and also, for example, greater than or equal to the minimum operating oil pressure required by the steering brake hydraulic circuit system. That is, the range of the safety oil pressure of the steering brake hydraulic circuit system is between the minimum and maximum operating oil pressure of the steering brake hydraulic circuit system.

[0041] In summary, the integrated valve assembly provided in this embodiment reduces the number of valve assemblies and connecting pipes required for the steering and braking modules by integrating both the steering and braking modules onto the valve body. This improves the integration of the steering and braking modules, resulting in a more compact layout, reduced installation space requirements, and easier installation, commissioning, and maintenance of the integrated valve assembly. Furthermore, the plate filter integrated into the valve body further enhances the integration of the valve body, making its structure more compact. It also reduces the risk of hydraulic oil leakage, thus lowering maintenance costs.

[0042] [Second Embodiment]

[0043] The second embodiment of this utility model provides a mining dump truck, which includes, for example, a mining dump truck body and an integrated valve group as described in the first embodiment above, wherein the integrated valve group is, for example, disposed on the mining dump truck body. The specific structure of the integrated valve group is the same as that described in the first embodiment, and will not be repeated here.

[0044] It is understood that the foregoing embodiments are merely illustrative examples of this utility model. Provided that the technical features do not conflict, the structure is not contradictory, and the purpose of this utility model is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An integrated valve assembly, characterized in that, include: The valve body integrates both a steering module and a braking module, and the valve body is internally equipped with a hydraulic oil circuit. The steering module includes at least a pressure relief valve, which is installed on one side of the valve body. The valve body is also provided with a steering accumulator port for connecting to the steering accumulator. The pressure relief valve and the steering accumulator port are connected through the hydraulic circuit. The braking module includes at least a parking brake control valve, which is mounted on one side of the valve body. The valve body also has a parking brake oil outlet, and the parking brake control valve and the parking brake oil outlet are connected through the hydraulic oil circuit.

2. The integrated valve assembly as described in claim 1, characterized in that, The valve body is also equipped with a plate filter, which is connected to the hydraulic oil circuit. The plate filter is used to filter the hydraulic oil and allow the filtered hydraulic oil to flow into the hydraulic oil circuit. In the hydraulic oil circuit, the oil outlet of the plate filter is connected to the first node.

3. The integrated valve assembly as described in claim 2, characterized in that, The plate filter is located on the first side of the valve body, and the pressure relief valve and the parking brake control valve are located on the second side of the valve body.

4. The integrated valve assembly as described in claim 2, characterized in that, The braking module includes a pressure reducing valve, which is mounted on one side of the valve body. The pressure reducing valve is connected to the parking brake control valve through the hydraulic oil circuit, and is used to reduce the pressure of the hydraulic oil in the hydraulic oil circuit.

5. The integrated valve assembly as described in claim 4, characterized in that, The parking brake control valve includes a first parking brake control valve and a second parking brake control valve connected in series. In the hydraulic circuit, the pressure reducing valve is connected between the first node and the first parking brake control valve, the first parking brake control valve is connected between the pressure reducing valve and the second parking brake control valve, and the second parking brake control valve is connected between the first parking brake control valve and the parking brake outlet.

6. The integrated valve assembly as described in claim 2, characterized in that, The steering module also includes a steering control valve, which is installed on one side of the valve body. In the hydraulic circuit, the steering control valve is connected between the first node and the steering accumulator port. The pressure relief valve is connected between the steering accumulator port and the return oil tank port. The pressure relief valve is used to release the oil pressure of the steering accumulator connected to the steering accumulator port.

7. The integrated valve assembly as described in claim 6, characterized in that, The pressure relief valve includes a pressure relief handle, which is used to control the pressure relief valve to open and release the oil pressure of the steering accumulator.

8. The integrated valve assembly as described in claim 6, characterized in that, The steering control valve includes a first steering control valve and a second steering control valve, and the steering accumulator port includes a first steering accumulator port and a second steering accumulator port. The first steering accumulator port is used to connect to the first steering accumulator, and the second steering accumulator port is used to connect to the second steering accumulator. In the hydraulic circuit, the first steering control valve is connected in series with the first steering accumulator port to form a first steering circuit, the second steering control valve is connected in series with the second steering accumulator port to form a second steering circuit, and the pressure relief valve is connected to both the first steering accumulator port and the second steering accumulator port.

9. The integrated valve assembly as described in claim 3, characterized in that, The valve body is also provided with an overflow valve, which is located on the first side of the valve body; In the hydraulic circuit, the relief valve is connected to the first node, and the relief valve is used to control the oil pressure at the first node within the range of the preset oil pressure when the oil pressure at the first node is greater than the preset oil pressure.

10. A mining dump truck, characterized in that, include: The integrated valve assembly as described in any one of claims 1-9.

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