A mine dump truck transmission system
By combining a hydraulic torque converter and a wet clutch, the problem of clutch damage and road surface disruption during the starting and getting out of trouble of large-tonnage mining dump trucks has been solved, achieving smooth vehicle starting and extended clutch life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA TIECHEN INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-05-29
AI Technical Summary
Large-tonnage mining dump trucks are prone to clutch damage and wheel damage to the road surface when starting or getting out of trouble, making it difficult to start.
The system employs a combination design of hydraulic torque converter, wet clutch, electronic clutch pedal and controller. The hydraulic torque converter smoothly transmits torque, reduces slippage and heat generation of the wet clutch, and achieves flexible connection to absorb impact loads.
It enables smooth vehicle starts, reduces clutch damage, minimizes wheel-to-road damage, and extends clutch life.
Smart Images
Figure CN224297150U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of mining dump trucks, and in particular to a transmission system for mining dump trucks. Background Technology
[0002] Mining dump trucks fall under the category of engineering machinery and are mainly used in open-pit mines, hydropower stations, road construction, and other scenarios to transport materials such as ore and sand.
[0003] Mining dump trucks are heavy due to the combined weight of their load and the truck itself. When starting from a standstill or attempting to escape a difficult situation, the transmission system must overcome inertial resistance far exceeding that of traction conditions. This results in a step-like increase in drive shaft torque. The main clutch of the transmission system must withstand enormous torque impacts during engagement, leading to a high clutch failure rate. Furthermore, the drive wheel torque rises sharply, generating vibrations that damage the road surface. When starting on various rough, off-road, or complex road surfaces with various obstacles, this excessive driving torque does not provide the vehicle with significant acceleration. Instead, it damages the soil, deepens wheel ruts, and makes starting difficult.
[0004] In the process of implementing this embodiment, the inventors discovered at least the following problems:
[0005] Existing large-tonnage mining dump trucks are prone to clutch damage during starting or getting out of trouble, and the wheels are also prone to damaging the road surface, which increases the difficulty of starting. Utility Model Content
[0006] The purpose of this utility model is to provide a transmission system for mining dump trucks, which solves the technical problem that in existing large-tonnage mining dump trucks, the clutch is easily damaged during starting or getting out of trouble, and the wheels are prone to damaging the road surface, which increases the difficulty of starting.
[0007] Utility model solution:
[0008] This utility model provides a transmission system for a mining dump truck, including a diesel engine, a hydraulic torque converter, a gearbox, a wet clutch, an electronic clutch pedal, and a controller. The hydraulic torque converter includes a pump impeller, a guide wheel, a turbine, and a lock-up clutch. The pump impeller is driven to the output shaft of the diesel engine, the guide wheel is disposed between the pump impeller and the turbine, and the lock-up clutch is disposed on the side of the turbine near the diesel engine. The wet clutch is driven to the output end of the turbine, and the gearbox is connected to the wet clutch. The electronic clutch pedal is electrically connected to the controller. The controller is electrically connected to the diesel engine, the hydraulic torque converter, the gearbox, the lock-up clutch, and the wet clutch.
[0009] Furthermore, the hydraulic torque converter is equipped with a lock-up clutch solenoid valve, a sensor, and a wet clutch solenoid valve; the sensor is electrically connected to the controller; the controller is electrically connected to the lock-up clutch solenoid valve and the wet clutch solenoid valve respectively.
[0010] Furthermore, the hydraulic torque converter is connected to a filter.
[0011] Furthermore, the hydraulic torque converter is connected to an oil cooler.
[0012] Beneficial effects:
[0013] This invention provides a transmission system for a mining dump truck. During operation, the diesel engine drives the pump wheel to rotate, converting mechanical energy into fluid kinetic energy. The transmission fluid flowing from the pump wheel enters the turbine, at which point the direction of the fluid flow changes, and a guide wheel allows the fluid exiting the turbine to re-enter the pump wheel. Simultaneously, the fluid changes direction and exerts a force on the guide wheel, thus gradually increasing the torque acting on the turbine. When the mining dump truck starts or gets out of trouble, the torque increases steadily, enabling a smooth start and reducing damage to the road surface. Simultaneously, the turbine smoothly transmits torque to the wet clutch, reducing slippage and heat generation during engagement, improving the working environment and extending the clutch's lifespan. Furthermore, the flexible connection between the input and output of the hydraulic torque converter provides vibration absorption and shock resistance, absorbing and reducing the impact load on the wet clutch caused by vehicle braking and load changes, further extending the clutch's service life. Therefore, in the case of starting or getting out of trouble, the clutch of this type of mining dump truck transmission system is not easily damaged, and the wheels are not easily damaged by the road surface, making starting easier. Attached Figure Description
[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the transmission system of the mining dump truck provided in this embodiment;
[0016] Figure 2 This is a schematic diagram of the transmission system of the mining dump truck provided in this embodiment;
[0017] Figure 3 This is a simplified schematic diagram of the transmission system of the mining dump truck provided in this embodiment.
[0018] icon:
[0019] 100-Diesel Engine;
[0020] 200-Hydraulic torque converter; 210-Pump impeller; 220-Steering wheel; 230-Turbine; 240-Lock-up clutch; 250-Lock-up clutch solenoid valve; 260-Sensor; 270-Wet clutch solenoid valve; 280-Filter; 290-Oil cooler;
[0021] 300-gearbox;
[0022] 400-Wet clutch;
[0023] 500 - Electronic clutch pedal;
[0024] 600-Controller. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0029] Furthermore, terms such as "horizontal" and "vertical" do not imply that the components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0031] This embodiment provides a transmission system for a mining dump truck. Please refer to [reference needed]. Figure 1-3 As shown, the system includes a diesel engine 100, a torque converter 200, a gearbox 300, a wet clutch 400, an electronic clutch pedal 500, and a controller 600. The torque converter 200 includes a pump impeller 210, a guide wheel 220, a turbine 230, and a lock-up clutch 240. The pump impeller 210 is driven to the output shaft of the diesel engine 100. The guide wheel 220 is disposed between the pump impeller 210 and the turbine 230. The lock-up clutch 240 is disposed on the side of the turbine 230 closer to the diesel engine 100. The wet clutch 400 is driven to the output end of the turbine 230, and the gearbox 300 is connected to the wet clutch 400. The electronic clutch pedal 500 is electrically connected to the controller 600. The controller 600 is electrically connected to the diesel engine 100, the torque converter 200, the gearbox 300, the lock-up clutch 240, and the wet clutch 400.
[0032] Specifically, the diesel engine 100 converts chemical energy into kinetic energy, thus serving as the power source for the mining dump truck; the hydraulic torque converter 200 is used to smoothly transmit torque, ensuring smooth starting and reducing wear on the wet clutch 400; the pump wheel 210 rotates, driving the turbine 230 to rotate; the guide wheel 220 is used to change the flow direction of the transmission fluid, thereby increasing torque; the ratio of the torque of the turbine 230 to the torque of the pump wheel 210 is called the torque ratio (the ratio of torque increase). The greater the speed difference between the pump wheel 210 and the turbine 230, the greater the torque ratio. The maximum torque ratio can be generated when the turbine 230 is stationary (i.e., at zero speed). As the speed of the turbine 230 (output speed) increases, the torque ratio begins to decrease. When the speed of the turbine 230 reaches 80% of the speed of the pump wheel 210, it will no longer increase torque. The lock-up clutch 240 is used to reduce energy loss. Under stable operating conditions such as high-speed cruising, the lock-up clutch 240 rigidly connects the pump wheel 210 and the turbine 230, eliminating slippage. The gearbox 300 is used to adjust the output speed and torque of the diesel engine 100. The wet clutch 400 is used for gear shifting and is integrated with the hydraulic torque converter 200. The electronic clutch pedal 500 facilitates gear shifting for operators. The controller 600 is responsible for controlling and managing the operating status of the vehicle's transmission components. In operation, the diesel engine 100 drives the pump wheel 210 to rotate, converting mechanical energy into fluid kinetic energy. The transmission fluid flowing out of the pump wheel 210 enters the turbine 230. At this time, the direction of the transmission fluid flow changes, and the guide wheel 220 allows the transmission fluid flowing out of the turbine 230 to re-enter the pump wheel 210. While the transmission fluid changes direction, it exerts a force on the guide wheel 220, thereby gradually increasing the torque acting on the turbine 230. When a mining dump truck starts or gets out of trouble, the torque increases smoothly, enabling the vehicle to start smoothly and reducing damage to the road surface from the wheels. At the same time, the turbine 230 also smoothly transmits torque to the wet clutch 400, thereby reducing the heat generated by slippage during the engagement of the wet clutch 400, improving the working environment of the wet clutch 400 and extending its service life. In addition, the hydraulic torque converter 200 has a flexible connection between input and output, which has the functions of vibration absorption and impact resistance. It can absorb and reduce the impact load on the wet clutch 400 caused by vehicle braking and load changes, and also extend the service life of the wet clutch 400.
[0033] In this embodiment, the hydraulic torque converter 200 is equipped with a lock-up clutch solenoid valve 250, a sensor 260, and a wet clutch solenoid valve 270; the sensor 260 is electrically connected to the controller 600; the controller 600 is electrically connected to the lock-up clutch solenoid valve 250 and the wet clutch solenoid valve 270 respectively.
[0034] Specifically, the lock-up clutch solenoid valve 250 is used to control the opening and closing of the lock-up clutch 240. The sensor 260 includes an oil temperature sensor 260 and a turbine 230 speed sensor 260. Under stable operating conditions such as high-speed cruising, the sensor 260 sends the transmission fluid temperature and turbine 230 speed to the controller 600. The controller 600 sends a signal to the lock-up clutch solenoid valve 250 to close the lock-up clutch 240. The wet clutch solenoid valve 270 is used to control the opening and closing of the wet clutch 400. When the driver depresses the electronic clutch pedal 500, the controller 600 controls the wet clutch solenoid valve 270 to disengage the wet clutch 400 and perform gear shifting.
[0035] In this embodiment, the hydraulic torque converter 200 is connected to a filter 280.
[0036] Specifically, the filter 280 is designed to ensure that the transmission fluid remains clean during circulation, filtering out metal shavings and mechanical impurities from the transmission fluid, thus maintaining the cleanliness of the transmission fluid and ensuring the reliability of power transmission.
[0037] In this embodiment, the hydraulic torque converter 200 is connected to an oil cooler 290.
[0038] Specifically, the oil cooler 290 is mainly used to cool the transmission fluid of the hydraulic torque converter 200, protect the seals, reduce high-temperature mechanical wear, and ensure that the hydraulic torque converter 200 operates within a suitable temperature range, thereby protecting the hydraulic torque converter 200 and extending its service life.
[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A transmission system for a mining dump truck, characterized in that, Includes a diesel engine (100), a hydraulic torque converter (200), a gearbox (300), a wet clutch (400), an electronic clutch pedal (500), and a controller (600); The hydraulic torque converter (200) includes a pump wheel (210), a guide wheel (220), a turbine (230), and a lock-up clutch (240). The pump impeller (210) is drive-connected to the output shaft of the diesel engine (100), the guide wheel (220) is disposed between the pump impeller (210) and the turbine (230), and the lock-up clutch (240) is disposed on the side of the turbine (230) near the diesel engine (100); The wet clutch (400) is connected to the output end of the turbine (230), and the gearbox (300) is connected to the wet clutch (400); The electronic clutch pedal (500) is electrically connected to the controller (600); The controller (600) is electrically connected to the diesel engine (100), the hydraulic torque converter (200), the gearbox (300), the lock-up clutch (240), and the wet clutch (400), respectively.
2. The transmission system for a mining dump truck according to claim 1, characterized in that, The hydraulic torque converter (200) is equipped with a lock-up clutch solenoid valve (250), a sensor (260), and a wet clutch solenoid valve (270). The sensor (260) is electrically connected to the controller (600); The controller (600) is electrically connected to the lock-up clutch solenoid valve (250) and the wet clutch solenoid valve (270), respectively.
3. The transmission system for a mining dump truck according to claim 2, characterized in that, The hydraulic torque converter (200) is connected to a filter (280).
4. The transmission system for a mining dump truck according to claim 3, characterized in that, The hydraulic torque converter (200) is connected to an oil cooler (290).