Wide-body vehicle hydraulic lifting integrated system and mining wide-body vehicle

Abstract

The utility model provides a wide-body vehicle hydraulic lifting integrated system and a mining wide-body vehicle, and belongs to the technical field of mining wide-body vehicles, the wide-body vehicle hydraulic lifting integrated system comprises an oil return flange and a lifting valve, the oil return flange comprises a flange body and an oil return block integrated on the flange body, and an oil return channel is arranged in the oil return block; the oil return block is further provided with a first oil return opening used for being communicated with a steering system oil way, a second oil return opening used for being communicated with a lifting valve oil way and a third oil return opening used for being communicated with a hydraulic oil tank. The first oil return opening, the second oil return opening and the third oil return opening all communicate with the oil return channel. The flange body is provided with a fourth oil return port which is directly butted with the third oil return port; the lifting valve is integrated on the oil return block; and a hydraulic oil return port of the lifting valve is directly butted and communicated with the second oil return port. Due to the adoption of the integrated system, the pipeline layout is simplified, the oil leakage risk is reduced, the working efficiency is improved, the maintenance and management are more convenient, and the energy consumption and the pollution to the environment are also reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of mining wide-body vehicles, specifically relating to a hydraulic lifting integrated system for wide-body vehicles and a mining wide-body vehicle. Background Technology

[0002] The lifting valve in a mining wide-body vehicle (such as a mining wide-body dump truck or heavy-duty truck) is a key component of the hydraulic system, responsible for controlling the lifting and lowering of the truck bed or cargo box. These vehicles are typically used in heavy-duty operating environments such as mines and construction sites, making the reliability and performance of their hydraulic systems crucial. The design and function of the lifting valve directly affect the vehicle's operating efficiency, safety, and maintenance costs.

[0003] Lifting valves are widely used in wide-body mining dump trucks. For example, in a cargo box lifting system, the lifting valve can be installed between the cargo box support and the hydraulic lines to ensure safe and reliable control of the cargo box's raising and lowering. Furthermore, in some large hydraulic systems, multiple lifting valves may be used to control different parts of the hydraulic circuits separately to better manage complex piping layouts, thus enabling more flexible design and arrangement.

[0004] Currently, the main defects of existing lifting valves are as follows:

[0005] (1) The pipeline layout is complicated: there are many connecting parts from the lifting valve to the hydraulic oil tank, such as external pipes, transition joints and fasteners, which greatly increases the risk of leakage and makes the whole system larger.

[0006] (2) Low working efficiency: The hydraulic oil travels a long distance from the actuator back to the tank, which increases pressure loss and reduces the system's response speed and working efficiency.

[0007] (3) Inconvenient to maintain: Daily inspection and maintenance are simpler and faster, which increases downtime and reduces equipment utilization. Utility Model Content

[0008] This utility model provides a hydraulic lifting integrated system for wide-body vehicles and a mining wide-body vehicle. By integrating the lifting valve with the hydraulic oil tank return flange, it solves the problems of existing lifting valves and hydraulic oil tanks having many connecting parts, complex structures, and long hydraulic oil return distances, which lead to large systems, high leakage risks, slow response speeds, and low working efficiency.

[0009] Firstly, to achieve the above objectives, the technical solution adopted by this utility model is as follows: A wide-body vehicle hydraulic lifting integrated system is provided, comprising: a return oil flange and a lifting valve. The return oil flange includes a flange body and a return oil block integrated on the flange body. The return oil block has a return oil channel, and the return oil block also has a first return oil port for connecting to the steering system oil circuit, a second return oil port for connecting to the lifting valve oil circuit, and a third return oil port for connecting to the hydraulic oil tank. The first, second, and third return oil ports are all connected to the return oil channel. The flange body has a fourth return oil port directly connected to the third return oil port. The lifting valve is integrated on the return oil block. The hydraulic oil return port of the lifting valve is directly connected to the second return oil port.

[0010] Compared with the prior art, the hydraulic lifting integrated system for wide-body vehicles provided by this utility model has the following advantages: (1) Simplified pipeline layout: By directly integrating the lifting valve onto the return flange of the hydraulic oil tank, a direct connection between the lifting valve and the hydraulic oil tank is formed. This reduces and avoids the need for external return pipelines, thereby reducing the number of pipeline interfaces, which in turn reduces the risk of pipeline leakage. It also makes the entire system more compact and improves the reliability of the system. (2) Improved working efficiency: Since the lifting valve is directly integrated onto the return flange, the distance of hydraulic oil from the actuator (lifting valve) back to the hydraulic oil tank is greatly shortened. (3) Easy to maintain: Due to the simple pipeline layout and the absence of complex and numerous return oil pipelines, daily inspection and maintenance are simpler and faster, reducing downtime and improving equipment utilization. (4) As an extension of integrated functions: More and more functional components can be integrated into the return oil flange, such as built-in filters and sensors, which simplifies the system structure and also helps to improve the system's intelligence level. (5) Environmental protection and energy saving: The integrated design reduces the consumption of hydraulic oil in the return oil pipeline and the risk of oil leakage, thus reducing energy consumption and environmental pollution.

[0011] In one feasible embodiment, the lifting valve is fixed to the return oil block by long bolts. Directly fixing the lifting valve with long bolts simplifies installation and disassembly, and also facilitates later maintenance.

[0012] In one feasible embodiment, a bracket is further provided on the return oil block, and the inlet and outlet oil pipes of the lifting valve are respectively fixed on the bracket. This improves the integration performance of the inlet and outlet oil pipes of the lifting valve.

[0013] In one feasible embodiment, the inlet pipe and the outlet pipe are respectively secured to the bracket by U-shaped clamps and matching nuts. The use of U-shaped clamps also facilitates maintenance.

[0014] In one possible implementation, the support includes bent plates symmetrically fixed to opposite sides of the return oil block. Each bent plate has a fixing plate fixed to the return oil block and a support plate supporting the inlet pipe. The support plate has an elongated hole through which the U-shaped clamp passes. Using two bent plates to support the outlet and inlet pipes respectively simplifies the support structure and also contributes to the simplification of the overall system structure.

[0015] In one possible implementation, the lifting valve has an annular groove surrounding the hydraulic oil return port, and a sealing ring is disposed within the annular groove. This improves the reliability of the seal and prevents hydraulic oil leakage.

[0016] In one feasible embodiment, the second return port and the third return port are respectively located on the upper and lower end faces of the return block, with the center lines of the second and third return ports collinear, ensuring a straight-line connection between them. The hydraulic oil return port of the lifting valve can be directly connected to the hydraulic oil tank, representing the shortest straight-line return distance from the lifting valve to the hydraulic oil tank, reducing pressure loss, and improving the system's response speed and operating efficiency.

[0017] In one possible implementation, the diameter of the return oil passage near the hydraulic oil tank is larger than the diameter near the lifting valve. This further demonstrates the rapid response capability of the return oil.

[0018] In one possible implementation, an oil baffle plate is also provided on the flange body, located directly below the fourth oil return port. For example, the oil baffle plate is a U-shaped plate, welded or bolted to the side of the flange body facing the hydraulic oil tank. The return flange is bolted to the hydraulic oil tank, thus the oil baffle plate is located inside the hydraulic oil tank. The returning oil to the hydraulic oil tank impacts the oil baffle plate, blocking and diverting the hydraulic oil flowing back to the tank. This prevents the returning oil from directly impacting a specific area of ​​the hydraulic oil tank, thus avoiding large fluctuations in hydraulic oil temperature and localized high temperatures within the tank.

[0019] Secondly, this utility model embodiment also provides a wide-body mining vehicle, including the aforementioned wide-body vehicle hydraulic lifting integrated system.

[0020] The wide-body mining vehicle provided in this application simplifies pipeline layout, reduces the risk of oil leaks, improves work efficiency, facilitates maintenance and management, and reduces energy consumption and environmental pollution due to the adoption of this integrated system. Attached Figure Description

[0021] Figure 1 Schematic diagram of the structure of the wide-body vehicle hydraulic lifting integrated system provided in this embodiment of the utility model Figure 1 ;

[0022] Figure 2 Schematic diagram of the structure of the wide-body vehicle hydraulic lifting integrated system provided in this embodiment of the utility model Figure 2 ;

[0023] Figure 3 A top view of the hydraulic lifting integrated system for wide-body vehicles provided in this embodiment of the utility model;

[0024] Figure 4 For along Figure 3 Cross-sectional view of line AA in the middle;

[0025] Figure 5 for Figure 3 The diagram shows a side view of the hydraulic lifting integrated system for the wide-body vehicle.

[0026] Figure 6 A three-dimensional structural schematic diagram of the oil return flange provided for an embodiment of this utility model;

[0027] Figure 7 A top view of the oil return flange provided in an embodiment of this utility model;

[0028] Figure 8 For along Figure 7 Cross-sectional view of the middle BB line;

[0029] Figure 9 A three-dimensional structural schematic diagram of the lifting valve provided in an embodiment of this utility model;

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Lifting valve; 2. Oil return block; 3. Flange body; 4. Oil outlet pipe; 5. U-shaped clamp; 6. Bracket; 7. Oil inlet pipe; 8. Long bolt; 9. First oil return port; 10. Oil return channel; 11. Oil baffle; 12. Fourth oil return port; 13. Third oil return port; 14. Second oil return port; 15. Hydraulic oil return port; 16. Annular groove; 17. Threaded hole. Detailed Implementation

[0032] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] Please refer to the following: Figures 1 to 9The hydraulic lifting integrated system for wide-body vehicles provided by this utility model will now be described. The hydraulic lifting integrated system for wide-body vehicles includes: a return flange and a lifting valve 1. The return flange includes a flange body 3 and a return block 2 integrated on the flange body 3. The return block 2 has a return channel 10 and is also provided with a first return port 9 for connecting to the steering system oil circuit, a second return port 14 for connecting to the lifting valve 1 oil circuit, and a third return port 13 for connecting to the hydraulic oil tank. The first return port 9, the second return port 14, and the third return port 13 are all connected to the return channel 10. The flange body 3 has a fourth return port 12 directly connected to the third return port 13. The lifting valve 1 is integrated on the return block 2. The hydraulic oil return port 15 of the lifting valve 1 is directly connected to the second return port 14.

[0034] The function of lifting valve 1 in the whole system is as follows:

[0035] (1) Control the flow of hydraulic oil: By opening or closing the hydraulic oil path, the action of the hydraulic cylinder is controlled, thereby realizing the lifting and lowering of the carriage.

[0036] (2) Adjust pressure and flow: Adjust the pressure and flow of hydraulic oil according to the operation requirements to ensure smooth operation and rapid response.

[0037] (3) Provide safety protection: The built-in safety device can lock the position of the hydraulic cylinder in an emergency to prevent accidental descent and ensure the safety of personnel and goods.

[0038] Therefore, the lifting valve 1 and the hydraulic oil tank are key components of the hydraulic system. To ensure efficient connection between these two functional components and optimize the overall performance of the hydraulic system, this application integrates the lifting valve 1 onto the return flange of the hydraulic oil tank. This integrated design brings many beneficial effects to the entire system:

[0039] (1) Compared with the complicated pipeline layout, the pipeline layout is simplified: by directly integrating the lifting valve 1 onto the return flange of the hydraulic oil tank, a direct connection between the lifting valve 1 and the hydraulic oil tank is formed. This reduces and avoids the need for external return pipelines, thus reducing the number of pipeline interfaces, which in turn reduces the risk of pipeline leakage, and makes the whole system more compact and improves the reliability of the system.

[0040] (2) Improved work efficiency: Since the lifting valve 1 is directly integrated on the return flange, the straight distance of hydraulic oil from the actuator (lifting valve 1) back to the hydraulic oil tank is greatly shortened, reducing the pressure loss caused by the circulation of hydraulic oil in the pipeline, which can improve the system's response speed and work efficiency.

[0041] (3) Easy to maintain: Due to the simple pipeline layout and the absence of complex and numerous return oil pipelines, the installation process is simplified, making daily inspection and maintenance simpler and faster, reducing downtime and improving equipment utilization.

[0042] (4) As an extension of integrated functions: more and more functional components can be integrated into the return oil flange, such as built-in filters, sensors, etc., which simplifies the system structure and also helps to improve the intelligence level of the system.

[0043] (5) Environmental protection and energy saving: The integrated design reduces the consumption of hydraulic oil in the return oil line and the risk of oil leakage, thus reducing energy consumption and environmental pollution.

[0044] (6) Enhanced system sealing: The oil return block 2 with multiple oil return ports is directly integrated into the flange body 3. The design of the oil return flange can provide better sealing effect, prevent hydraulic oil leakage, and protect the system from external contaminants.

[0045] For example, the oil return block 2 can be welded to the flange body 3, or it can be fixed to the flange body 3 with bolts and a sealing gasket.

[0046] In some embodiments, see Figures 1 to 5 As shown, the lifting valve 1 is fixed to the return oil block 2 by long bolts 8. The lifting valve 1 is directly fixed with long bolts 8, making installation and disassembly simple and convenient, and also facilitating later maintenance. In this application, three or four long bolts 8 can be used to fix the lifting valve 1 to the return oil block 2, and the return oil block 2 is provided with corresponding threaded holes 17 for screwing into the long bolts 8.

[0047] To ensure the stability of the lifting valve 1, provide stable and reliable support for the lifting valve 1, and ensure the sealing of the hydraulic oil return port 15 and the second return port 14, the return block 2 of this application adopts a cuboid with six flat sides, so that the flange body 3 and the lifting valve 1 that are in contact with the return block 2 can achieve face-to-face contact.

[0048] In some embodiments, see Figures 1 to 5 As shown, a bracket 6 is also provided on the oil return block 2, and the oil inlet pipe 7 and oil outlet pipe 4 of the lifting valve 1 are respectively fixed on the bracket 6. The bracket 6 is used to fix and support the oil inlet pipe 7 and oil outlet pipe 4 of the lifting valve 1, thereby improving the integration performance of the oil inlet pipe 7 and oil outlet pipe 4 of the lifting valve 1.

[0049] In some embodiments, see Figures 1 to 5As shown, the oil inlet pipe 7 and the oil outlet pipe 4 are respectively secured to the bracket 6 using U-shaped clamps 5 and matching nuts. The use of U-shaped clamps 5 for fixing also demonstrates ease of maintenance. During installation, the U-shaped clamp 5 is fitted onto the oil inlet pipe 7, passed through the elongated hole on the bracket 6, and secured using a washer with a diameter larger than the width of the elongated hole and a nut. Using this type of U-shaped clamp 5, pre-made parts can be purchased for installation, eliminating the need for additional design, and this installation method is simple and convenient.

[0050] U-shaped clamps 5 also come in various types. The example above shows that both ends of the U-shaped clamp 5 are provided with external thread sections; alternatively, U-shaped clamps 5 with through holes at both ends can be selected. During installation, bolts and nuts can be used to fix them to the bracket 6.

[0051] In some embodiments, see Figures 1 to 5 As shown, the bracket 6 includes symmetrically fixed bending plates on opposite sides of the return oil block 2. The bending plates have a fixing plate fixed to the return oil block 2 and a support plate supporting the oil inlet pipe 7. The support plate is provided with a long hole through which the U-shaped clamp 5 passes. Using two bending plates to support the oil outlet pipe 4 and the oil inlet pipe 7 respectively simplifies the construction of the bracket 6 and also helps to simplify the overall system structure.

[0052] In some embodiments, see Figure 4 and Figure 9 As shown, the lifting valve 1 has an annular groove 16 surrounding the hydraulic oil return port 15, and a sealing ring is installed inside the annular groove 16. The sealing ring is tightly fitted into the annular groove 16 to improve the reliability of the seal and prevent hydraulic oil leakage.

[0053] In some embodiments, see Figure 4 and Figure 8 As shown, the second return port 14 and the third return port 13 are respectively located on the upper and lower end faces of the return block 2. The centerline of the second return port 14 is collinear with the centerline of the third return port 13, so that the second return port 14 and the third return port 13 are in a straight line connection. The hydraulic oil return port 15 of the lifting valve 1 can then be in a straight line connection with the hydraulic oil tank, reflecting the shortest straight return distance from the lifting valve 1 to the hydraulic oil tank. Compared with the energy and time consumed by hydraulic oil in a long oil circuit, this can greatly reduce the pressure loss of hydraulic oil, thereby improving the system's response speed and working efficiency.

[0054] The first return port 9 is located on any side of the return block 2, forming a triangular shape with the line connecting the second return port 14 and the third return port 13. The first return port 9 is connected to the main road of the return channel 10 through a branch of the return channel 10. The main road is also directly connected to the oil circuit between the lifting valve 1 and the hydraulic oil tank.

[0055] The first oil return port 9 is equipped with an oil return connector to facilitate connection to the vehicle's steering system.

[0056] In some embodiments, see Figure 4 and Figure 8 As shown, the diameter of the return oil channel 10 near the hydraulic oil tank is larger than the diameter of the end near the lifting valve 1. In the return oil channel 10 from the lifting valve 1 to the hydraulic oil tank, the larger the diameter, the greater the flow rate of return oil per unit area. By setting a large diameter at the end near the hydraulic oil tank, the hydraulic oil in the lifting valve 1 can flow back quickly, further demonstrating the rapid response capability of the return oil.

[0057] For example, the upper end of the return oil channel 10 is a small-diameter straight channel, and the lower end is a large-diameter straight channel.

[0058] In some embodiments, see Figure 4 , Figure 5 and Figure 8 As shown, an oil baffle plate 11 is also provided on the flange body 3. The oil baffle plate 11 is a U-shaped plate, welded or bolted to the side of the flange body 3 facing the hydraulic oil tank. Bolt holes for fixing to the hydraulic oil tank are provided around the return oil flange. When the return oil flange is fixed to the hydraulic oil tank by bolts, the oil baffle plate 11 is located inside the hydraulic oil tank, directly below the fourth return oil port 12. The return oil returning to the hydraulic oil tank will impact the oil baffle plate 11, blocking and diverting the hydraulic oil flowing back to the hydraulic oil tank, preventing the return oil from directly impacting a certain area of ​​the hydraulic oil tank, causing large fluctuations in the hydraulic oil and high local temperature.

[0059] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0060] Based on the same inventive concept, this application also provides a wide-body mining vehicle, including the aforementioned wide-body vehicle hydraulic lifting integrated system.

[0061] The wide-body mining vehicle provided in this application simplifies the pipeline layout due to the adoption of this integrated system. This reduces and eliminates the need for external return oil pipelines, thereby reducing the number of pipeline interfaces and lowering the risk of pipeline leakage. It also significantly shortens the straight-line distance of hydraulic oil from the actuator (lifting valve 1) back to the hydraulic oil tank, reducing pressure loss caused by hydraulic oil circulation in the pipeline and improving the system's response speed and working efficiency. The absence of complex and numerous return oil pipelines simplifies the installation process and facilitates maintenance and management. Furthermore, the reduction in hydraulic oil consumption and leakage risk in the return oil pipeline also reduces energy consumption and environmental pollution.

[0062] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic lifting integrated system for wide-body vehicles, characterized in that, include: Return flange and lifting valve (1); The return flange includes a flange body (3) and a return block (2) integrated on the flange body (3). The return block (2) has a return channel (10). The return block (2) also has a first return port (9) for connecting to the steering system oil circuit, a second return port (14) for connecting to the lifting valve (1) oil circuit, and a third return port (13) for connecting to the hydraulic oil tank. The first return port (9), the second return port (14), and the third return port (13) are all connected to the return channel (10). The flange body (3) has a fourth return port (12) directly connected to the third return port (13). The lifting valve (1) is integrated on the return oil block (2); the hydraulic oil return port (15) of the lifting valve (1) is directly connected to the second return oil port (14).

2. The wide-body vehicle hydraulic lifting integrated system as described in claim 1, characterized in that, The lifting valve (1) is fixed to the return oil block (2) by a long bolt (8).

3. The wide-body vehicle hydraulic lifting integrated system as described in claim 1, characterized in that, The return block (2) is also provided with a bracket (6), and the oil inlet pipe (7) and oil outlet pipe (4) of the lifting valve (1) are respectively fixed on the bracket (6).

4. The wide-body vehicle hydraulic lifting integrated system as described in claim 3, characterized in that, The oil inlet pipe (7) and the oil outlet pipe (4) are respectively fastened to the bracket (6) by U-shaped clamps (5) and matching nuts.

5. The wide-body vehicle hydraulic lifting integrated system as described in claim 4, characterized in that, The bracket (6) includes bending plates symmetrically fixed on opposite sides of the oil return block (2). The bending plate has a fixing plate fixed on the oil return block (2) and a support plate supporting the oil inlet pipe (7). The support plate is provided with an elongated hole through which the U-shaped clamp (5) passes.

6. The wide-body vehicle hydraulic lifting integrated system as described in claim 1, characterized in that, The lifting valve (1) is provided with an annular groove (16) surrounding the hydraulic oil return port (15), and a sealing ring is provided in the annular groove (16).

7. The wide-body vehicle hydraulic lifting integrated system as described in claim 1, characterized in that, The second oil return port (14) and the third oil return port (13) are respectively located on the upper end face and the lower end face of the oil return block (2). The center line of the second oil return port (14) and the center line of the third oil return port (13) are collinear, so that the second oil return port (14) and the third oil return port (13) are in a straight line connection.

8. The wide-body vehicle hydraulic lifting integrated system as described in claim 7, characterized in that, The diameter of the return oil channel (10) near the hydraulic oil tank is larger than the diameter of the end near the lifting valve (1).

9. The wide-body vehicle hydraulic lifting integrated system as described in claim 1, characterized in that, An oil baffle (11) is also provided on the flange body (3), and the oil baffle (11) is located directly below the fourth oil return port (12).

10. A wide-body mining vehicle, characterized in that, Including the wide-body vehicle hydraulic lifting integrated system as described in any one of claims 1-9.

Images