Hydraulic oil circuit for mining trackless mancar
By introducing a dual pump and an efficient heat dissipation system, the hydraulic oil circuit of the mine-free trackless man-vehicle is optimized, and the problems of complex system, poor heat dissipation and inflexible steering are solved, efficient handling and safe operation of the vehicle are achieved, and equipment life is extended.
Patent Information
- Application Number
- CN202421829523.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The hydraulic oil circuit system of traditional mining trackless man-cars is complex, has poor heat dissipation effect, slow braking response, and inflexible steering, resulting in increased labor intensity of operators, reduced safety and equipment life.
Dual pumps and dual pumps are used as power sources, combined with high-efficiency cooling system, flexible braking system and intelligent steering system, the dual pumps meet the steering and heat dissipation needs at the same time, and a dual gear pump and radiator are installed to achieve the improvement of system integration and working efficiency. Braking pipelines and hand brake valves are also equipped to ensure safety and reliability.
It improves the integration and working efficiency of the hydraulic system, enhances the handling and safety of the vehicle, ensures normal operation in high temperature environments, and extends the service life of the equipment.
Smart Images
Figure CN223075860U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of automotive hydraulic systems, and particularly to a hydraulic oil circuit for a trackless manriding vehicle in mines. Background Art
[0002] In the design and application of trackless manriding vehicles in mines, the performance of the hydraulic oil circuit system is directly related to the controllability, safety and overall operation efficiency of the vehicle. The hydraulic oil circuit design of traditional trackless manriding vehicles in mines often has problems such as complex systems, poor heat dissipation effects, slow braking responses and inflexible steering. These problems are particularly prominent in harsh mine environments, not only increasing the labor intensity of operators, but also reducing the safety and service life of the equipment.
[0003] The connection between the heat dissipation oil circuit of the heat dissipation system and the heat dissipation mechanism of the drive axle of traditional trackless manriding vehicles in mines is complex, resulting in low heat dissipation efficiency and unable to meet the heat dissipation requirements of the vehicle under heavy load or long-term operation. In addition, the steering accuracy and flexibility of the steering system are poor, especially in complex mine terrains, it is difficult to meet the requirements of rapid and accurate steering of the vehicle, and due to the use of multiple sets of hydraulic oil circuits, the structure is complex, which is not conducive to the maintenance of the hydraulic system in the later stage and needs to be improved. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a hydraulic oil circuit for a trackless manriding vehicle in mines that is compact in structure and safe and reliable for the above problems.
[0005] To achieve the above purpose, the utility model discloses a hydraulic oil circuit for a trackless manriding vehicle in mines, which includes a steering cylinder, a hydraulic oil tank, a heat dissipation oil tank and a drive axle. The structural feature is that it further includes a double pump. One of the hydraulic pumps of the double pump is connected to the hydraulic oil tank and a flow dividing valve through a pipeline. The flow dividing valve is connected to the steering cylinder through a pipeline and conveys hydraulic oil to the steering cylinder. The steering cylinder is connected to the hydraulic oil tank through a pipeline to form a steering oil circuit. The other hydraulic pump of the double pump is connected in series with the heat dissipation oil tank and the heat dissipation mechanism of the drive axle through a pipeline and conveys heat dissipation oil to the heat dissipation mechanism of the drive axle. The heat dissipation mechanism of the drive axle is connected to the heat dissipation oil tank through a pipeline to form a heat dissipation circulation oil circuit. A first radiator is installed on the pipeline of the heat dissipation circulation oil circuit.
[0006] Using a double pump as the power source can meet the requirements of the steering system and the cooling system simultaneously, improving the system integration and working efficiency. It reduces the volume and weight of the equipment, making the entire hydraulic system more compact and facilitating the installation and maintenance of the mine-use trackless personnel carrier. The steering oil circuit ensures that the steering cylinder can stably and reliably obtain hydraulic oil, thereby achieving precise steering control. Moreover, it improves the response speed and accuracy of the steering system, enhancing the vehicle's maneuverability. The cooling circulation oil circuit transports the oil in the cooling oil tank to the cooling mechanism of the drive axle, achieving effective cooling of the drive axle, improving the cooling efficiency, ensuring that the drive axle can still operate normally in a high-temperature environment, and extending the service life of the equipment.
[0007] A brake pipeline is installed on the flow dividing valve. The brake pipeline is connected to the brake on the drive axle. A single-way foot brake valve and an electromagnetic directional valve for controlling this oil circuit are installed on the brake pipeline. The pipelines from the hydraulic oil tank to the flow dividing valve respectively supply hydraulic oil to the steering oil circuit and the brake pipeline. Through the flow dividing valve, hydraulic oil can be provided to the brake pipeline, realizing the flexible switching between the steering and braking functions. The single-way foot brake valve and the electromagnetic directional valve installed on the brake pipeline can precisely control the on-off of the brake oil circuit, improving the response speed and safety of the braking system. The electromagnetic directional valve is also called the flameout solenoid valve or the flameout switch. The braking principle of the flameout switch is that when the flameout solenoid valve loses power, the solenoid valve changes direction at this time, and the brake oil returns to the oil tank, and the brake is implemented by the spring.
[0008] A hand brake valve for controlling this oil circuit is installed on the brake pipeline. The hand brake valve provides an additional braking means for the vehicle, enhancing the reliability of the braking system. In case of emergency or when the foot brake fails, the operator can quickly brake the vehicle through the hand brake valve to ensure driving safety.
[0009] A filling valve is installed on the brake pipeline. The filling valve pipeline is connected to the accumulator. The combined use of the filling valve and the accumulator can provide additional hydraulic energy for the braking system during braking, improving the stability and durability of the braking force. At the same time, the accumulator can also absorb and store energy during the braking gap to prepare for the next braking.
[0010] The drive axle includes a rear drive axle and a front drive axle. The rear drive axle and the front drive axle are connected in parallel on the cooling circulation oil circuit. A one-way throttle valve is installed on the pipeline leading to the front drive axle. The cooling oil in the cooling circulation oil circuit flows to the rear drive axle and the front drive axle respectively. The brake oil in the brake pipeline also flows to the rear drive axle and the front drive axle respectively. Since the temperature of the rear drive axle is higher, the one-way throttle valve can ensure that the rear drive axle can obtain more cooling oil, thereby achieving effective cooling.
[0011] The double pump is a double gear pump, which improves the system integration and working efficiency, making the entire hydraulic system more compact and facilitating the installation and maintenance on the mine-use trackless personnel carrier.
[0012] A second radiator is installed on the pipeline of the steering oil circuit. Installing a second radiator on the steering oil circuit further improves the heat dissipation performance of the steering system. Especially under high-temperature or high-load working conditions, the second radiator can effectively reduce the temperature of the steering oil, prevent performance degradation or damage caused by overheating of the oil, and ensure the long-term stable operation of the steering system.
[0013] A hydraulic steering gear is installed on the steering oil circuit, and the oil inlet and outlet of the steering cylinder are both connected to the pipeline of the hydraulic steering gear. The installation of the hydraulic steering gear enables the oil inlet and outlet of the steering cylinder to be directly connected to it, achieving precise control of the steering cylinder. The hydraulic steering gear can quickly adjust the hydraulic oil flow and direction of the steering cylinder according to the driver's operation instructions, thereby realizing smooth and accurate steering of the vehicle.
[0014] In summary, the beneficial effects of the present utility model are as follows: By introducing advanced technologies such as a double gear pump, an efficient heat dissipation system, a flexible braking system, and an intelligent steering system, the comprehensive optimization and upgrade of the hydraulic oil circuit system of the mine trackless personnel carrier are realized, significantly improving the performance indicators and service life of the vehicle, and providing a strong guarantee for the safe and efficient operation of mine transportation operations. Description of the Drawings
[0015] Figure 1 It is a schematic diagram of the hydraulic oil circuit structure of the present utility model.
[0016] In the figure: hydraulic steering gear 1, double pump 2, flow dividing valve 3, filling valve 4, accumulator 5, hand brake valve 6, single-way foot brake valve 7, electromagnetic reversing valve 8, rear drive axle 9, front drive axle 10, first radiator 11, second radiator 12, steering cylinder 13, hydraulic oil tank 14, heat dissipation oil tank 15, one-way throttle valve 16. Detailed Embodiments
[0017] The following will further describe in detail the specific embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.
[0018] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.
[0019] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.
[0020] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", and "couple" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0021] The following is a description of the preferred embodiments of the present utility model in conjunction with the drawings.
[0022] A hydraulic oil circuit for a mine trackless personnel carrier includes a steering cylinder 13, a hydraulic oil tank 14, a heat dissipation oil tank 15, and a drive axle. It also includes a double pump 2. One of the hydraulic pumps of the double pump 2 is connected to the hydraulic oil tank 14 and a flow dividing valve 3 through a pipeline. The flow dividing valve 3 is connected to the steering cylinder 13 through a pipeline and delivers hydraulic oil to the steering cylinder 13. The pipeline of the steering cylinder 13 is connected to the hydraulic oil tank 14 to form a steering oil circuit. The other hydraulic pump of the double pump 2 is connected in series with the heat dissipation oil tank 15 and the heat dissipation mechanism of the drive axle through a pipeline and delivers heat dissipation oil to the heat dissipation mechanism of the drive axle. The heat dissipation mechanism of the drive axle is connected to the heat dissipation oil tank 15 through a pipeline to form a heat dissipation circulation oil circuit. A first radiator 11 is installed on the pipeline of the heat dissipation circulation oil circuit. Refer to the attached Figure 1 , using the double pump 2 as the power source can simultaneously meet the requirements of the steering system and the heat dissipation system, improve the integration and working efficiency of the system, reduce the volume and weight of the equipment, make the entire hydraulic system more compact, and facilitate the installation and maintenance of the mine trackless personnel carrier. The steering oil circuit ensures that the steering cylinder 13 can stably and reliably obtain hydraulic oil, thereby realizing precise steering control, improving the response speed and accuracy of the steering system, and enhancing the controllability of the vehicle. The heat dissipation circulation oil circuit delivers the oil in the heat dissipation oil tank 15 to the heat dissipation mechanism of the drive axle, realizes effective cooling of the drive axle, improves the heat dissipation efficiency, ensures that the drive axle can still work normally in a high-temperature environment, and extends the service life of the equipment.
[0023] Refer to the attached Figure 1, a brake pipeline is installed on the flow dividing valve 3. The brake pipeline is connected to the brake on the drive axle, and a single-circuit foot brake valve 7 and an electromagnetic reversing valve 8 for controlling this oil circuit are installed on the brake pipeline. The flow dividing valve 3 can supply hydraulic oil to the brake pipeline, realizing the flexible switching between the steering and braking functions. The single-circuit foot brake valve 7 and the electromagnetic reversing valve 8 installed on the brake pipeline can accurately control the on-off of the brake oil circuit, improving the response speed and safety of the braking system.
[0024] Refer to the appendix Figure 1 , a hand brake valve 6 for controlling this oil circuit is installed on the brake pipeline. The hand brake valve 6 provides an additional braking means for the vehicle, enhancing the reliability of the braking system. In case of an emergency or when the foot brake fails, the operator can quickly brake the vehicle through the hand brake valve 6 to ensure driving safety. A fluid filling valve 4 is installed on the brake pipeline. The pipeline of the fluid filling valve 4 is connected to the accumulator 5. The combined use of the fluid filling valve 4 and the accumulator 5 can provide additional hydraulic energy for the braking system during braking, improving the stability and persistence of the braking force. At the same time, the accumulator 5 can also absorb and store energy during the braking interval to prepare for the next braking.
[0025] The drive axle includes a rear drive axle 9 and a front drive axle 10. The rear drive axle 9 and the front drive axle 10 are connected in parallel on the heat dissipation circulation oil path. A one-way throttle valve 16 is installed on the pipeline leading to the front drive axle 9. The heat dissipation oil in the heat dissipation circulation oil path flows to the rear drive axle 9 and the front drive axle 10 respectively, and the brake oil in the brake pipeline also flows to the rear drive axle 9 and the front drive axle 10 respectively. Since the temperature of the rear drive axle 9 is higher, the one-way throttle valve 16 can ensure that the rear drive axle 9 can obtain more heat dissipation oil, thus achieving effective cooling. The double-pump 2 is a double-gear pump, which improves the integration and working efficiency of the system, making the entire hydraulic system more compact and facilitating installation and maintenance on the mine-use trackless personnel vehicle. A second radiator 12 is installed on the pipeline of the steering oil path. Installing the second radiator 12 on the steering oil path further improves the heat dissipation performance of the steering system. Especially under high-temperature or high-load working conditions, the second radiator 12 can effectively reduce the temperature of the steering oil, prevent performance degradation or damage caused by overheating of the oil, and ensure the long-term stable operation of the steering system. A hydraulic steering gear 1 is installed on the steering oil path. The inlet and outlet ports of the steering cylinder 13 are both connected to the hydraulic steering gear 1 through pipelines. The installation of the hydraulic steering gear 1 enables the inlet and outlet ports of the steering cylinder 13 to be directly connected to it, realizing the precise control of the steering cylinder 13. The hydraulic steering gear 1 can quickly adjust the hydraulic oil flow and direction of the steering cylinder 13 according to the driver's operation instructions, thus realizing the smooth and accurate steering of the vehicle.
[0026] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present utility model.
Claims
1. A hydraulic oil circuit for a trackless manrider in mines, comprising a steering cylinder (13), a hydraulic oil tank (14), a heat dissipation oil tank (15) and a drive axle, characterized in that, It also includes a double pump (2). One of the hydraulic pumps of the double pump (2) is connected to the hydraulic oil tank (14) and the flow dividing valve (3) through pipelines. The flow dividing valve (3) is connected to the steering cylinder (13) through pipelines and delivers hydraulic oil to the steering cylinder (13). The steering cylinder (13) is connected to the hydraulic oil tank (14) through pipelines to form a steering oil circuit. The other hydraulic pump of the double pump (2) is connected in series with the heat dissipation oil tank (15) and the heat dissipation mechanism of the drive axle through pipelines and delivers heat dissipation oil to the heat dissipation mechanism of the drive axle. The heat dissipation mechanism of the drive axle is connected to the heat dissipation oil tank (15) through pipelines to form a heat dissipation circulation oil circuit. A first radiator (11) is installed on the pipeline of the heat dissipation circulation oil circuit.
2. The hydraulic oil circuit of the trackless manrider for mine as described in claim 1 is characterized in that, A brake pipeline is installed on the flow dividing valve (3). The brake pipeline is connected to the brake on the drive axle. A single-way foot brake valve (7) and an electromagnetic reversing valve (8) for controlling this oil circuit are installed on the brake pipeline.
3. The hydraulic oil circuit of the trackless man - transporter for mine as claimed in claim 2, wherein, A hand brake valve (6) for controlling this oil circuit is installed on the brake pipeline.
4. The hydraulic oil circuit of the trackless manrider for mine as described in claim 1, wherein, A charging valve (4) is installed on the brake pipeline. The charging valve (4) is connected to an accumulator (5) through pipelines.
5. The hydraulic oil circuit of the trackless manrider for mine as claimed in claim 1, wherein, The drive axle includes a rear drive axle (9) and a front drive axle (10). The rear drive axle (9) and the front drive axle (10) are connected in parallel on the heat dissipation circulation oil circuit. A one-way throttle valve (16) is installed on the pipeline leading to the front drive axle (10).
6. The hydraulic oil circuit of the trackless man - carrier for mine as claimed in claim 1, wherein, The double pump (2) is a double gear pump.
7. The hydraulic oil circuit of the trackless manrider for mines according to claim 1, wherein, A second radiator (12) is installed on the pipeline of the steering oil circuit.
8. The hydraulic oil circuit of the trackless manrider for mine as claimed in claim 1, wherein, A hydraulic steering gear (1) is installed on the steering oil circuit. The oil inlet and outlet of the steering cylinder (13) are both connected to the hydraulic steering gear (1) through pipelines.