A loader control system and method for installing a snow blower

Abstract

This invention provides a loader control system for installing a snow blower, belonging to the field of snow blower technology. It includes a travel pump, a travel motor, a working pump, a working motor, an engine, and a controller. The input end of the travel pump is connected to the output shaft of the engine, and the output end of the travel pump is connected to the input end of the travel motor via a hydraulic pipe. The input end of the working pump is connected to the output shaft of the engine, and the output end of the working pump is connected to the input end of the working motor via a hydraulic pipe. The controller is electrically connected to the control terminal of the engine and the displacement solenoid valves on the travel pump and travel motor, respectively. This invention enables the loader's engine to control both the loader's travel and the snow blower's operation, ensuring that the loader's speed matches the snow blower's operating speed, thus reducing production costs.

Description

Technical Field

[0001] This invention belongs to the field of snow blower technology, and particularly relates to a loader control system and method for installing a snow blower. Background Technology

[0002] When a loader is used with a snow blower, the snow blower is powered by a motor. The motor is supplied with oil by a working pump inside the loader. The speed of the motor depends on the hydraulic flow of the working pump. The working pump is mounted on the engine, and its speed depends on the engine speed.

[0003] If there is a lot of snow and you want to increase the amount of snow thrown, you need to increase the speed of the working pump, which means you need to increase the engine speed. At this time, you need to press the accelerator pedal harder. Increasing the accelerator pedal will increase the vehicle speed. Increasing the vehicle speed will increase the amount of snow that the vehicle needs to throw per unit time.

[0004] Therefore, existing loaders paired with snow blowers require the snow blowers to have their own power system, that is, their own engine and other components. Otherwise, the vehicle speed cannot match the snow blower's operating speed, and it cannot adapt to different snow conditions. However, this adds a power system, which increases production costs. Summary of the Invention

[0005] In view of the defects or deficiencies in the prior art, the present invention provides a loader control system and method for installing a snow blower, which can use the engine on the loader to control the loader's movement and the snow blower's operation separately, and ensure that the vehicle speed matches the snow blower's operating speed, thereby reducing production costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, embodiments of the present invention provide a loader control system for installing a snow blower, including a travel pump, a travel motor, a working pump, a working motor, an engine, and a controller. The input end of the travel pump is connected to the output shaft of the engine, and the output end of the travel pump is connected to the input end of the travel motor via a hydraulic oil pipe. The input end of the working pump is connected to the output shaft of the engine, and the output end of the working pump is connected to the input end of the working motor via a hydraulic oil pipe. The controller is electrically connected to the control end of the engine and the displacement solenoid valves on the travel pump and the travel motor, respectively.

[0008] Furthermore, the output end of the walking motor is connected to the input end of the gearbox, and the output end of the gearbox is connected to the drive axle through a transmission shaft, thereby driving the wheels to rotate.

[0009] Furthermore, the output end of the working motor is connected in series with the snow-throwing impeller and the auger, respectively. A first reducer is provided between the working motor and the snow-throwing impeller, and a second reducer is provided between the snow-throwing impeller and the auger.

[0010] Furthermore, a pressure sensor is also provided on the travel motor to detect the pressure on the output side of the travel motor. The pressure sensor is electrically connected to the controller, and the load of the loader is determined based on the pressure on the output side of the travel motor measured by the pressure sensor.

[0011] Furthermore, it also includes a cruise control switch and a speed setting knob, both of which are connected to the controller. The cruise control switch enables the loader to set a driving speed, and the speed setting knob allows the speed to be adjusted.

[0012] Furthermore, it also includes a speed setting function switch and an engine speed setting knob, used to fix and adjust the engine speed, thereby controlling the operating speed of the working pump.

[0013] Furthermore, the cruise control switch, vehicle speed setting knob, engine speed setting function switch, and engine speed setting knob are all located in the driver's cab.

[0014] Secondly, embodiments of the present invention also provide a loader control method for installing a snowplow, comprising the following steps using a loader control system for installing a snowplow as described above:

[0015] When it is necessary to control the loader speed via the throttle, turn off the cruise control function switch, turn on the gear switch, and the controller detects the throttle opening to confirm the current speed requirement. Based on the current speed requirement, it calculates the engine speed, travel pump and travel motor displacement to achieve throttle control of the loader speed. During this process, the controller also monitors the loader load and brake pedal opening, thereby adjusting the engine speed, travel pump and travel motor displacement in real time to ensure the loader operates normally.

[0016] When it is necessary to move forward at a set speed, turn on the cruise control function switch and turn on the gear switch. The controller reads the speed set on the speed setting knob, calculates the engine speed, travel pump and travel motor displacement required for the set speed, and enables the vehicle to travel at the set speed.

[0017] The speed of the snow blower is controlled by adjusting the engine speed. When it is necessary to adjust the speed of the snow blower, first turn on the engine speed setting function switch. At this time, the controller detects that the engine speed setting function switch is turned on, reads the speed set on the engine speed setting knob, and adjusts the engine speed according to the required engine speed value for the vehicle speed.

[0018] Furthermore, adjusting the engine speed according to the required engine speed value for the vehicle speed specifically involves: determining whether the set speed is less than the required engine speed value for the vehicle speed; if the set speed is less than the required engine speed value for the current vehicle speed, the engine speed will be automatically adjusted to the minimum speed 'a' required for the vehicle speed, and the adjustment range of the engine speed is 'a'-2000 r / min; if the set speed is greater than the required engine speed value for the current vehicle speed, the engine speed will be increased to the set value.

[0019] Furthermore, after turning off the engine speed setting function switch, the engine speed will be adjusted to the speed required by the current throttle position after a set delay time.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. This invention, by setting up a travel pump and a travel motor, connects the input end of the travel pump to the output shaft of the engine, and the output end of the travel pump to the input end of the travel motor via a hydraulic oil pipe. The output end of the travel motor is connected to the drive axle, thereby using the drive axle to drive the wheels to rotate. Furthermore, the controller controls the displacement of the travel pump and the travel motor, so that the loader speed is not directly controlled by the engine. Instead, the engine controls the snow blower's operation, thus achieving separate control of the loader's travel and the snow blower's operation, ensuring that the loader speed matches the snow blower's operating speed, and reducing production costs.

[0022] 2. This invention includes a speed setting function switch, an engine speed setting knob, a cruise control switch, and a vehicle speed setting knob, all of which are electrically connected to the controller. The cruise control switch and vehicle speed setting knob allow the loader to travel at a set speed, which can be adjusted using the vehicle speed setting knob. The engine speed setting function switch and engine speed setting knob allow for fixing and adjusting the engine speed, thereby controlling the operating speed of the working pump and indirectly controlling the speed of the snowplow to adapt to different snow loads. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the loader control system structure in Embodiment 1 of the present invention;

[0024] Figure 2 This is a schematic diagram of the loader control method in Embodiment 1 of the present invention;

[0025] The components include: 1. Engine; 2. Travel pump; 3. Travel motor; 4. Gearbox; 5. Drive shaft; 6. Drive axle; 7. Wheel; 8. Working pump; 9. Working motor; 10. Control valve; 11. Snow-throwing impeller; 12. Screwdriver; 13. Throwing cylinder; 14. First reducer; 15. Second reducer. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Example 1

[0028] A typical embodiment of the present invention, such as Figure 1 As shown, a loader control system for installing a snowplow includes a snowplow power system, a loader travel system, an engine 1, and a controller. The loader travel system includes a travel pump 2, a travel motor 3, and a drive axle 6. The input end of the travel pump 2 is connected to the output shaft of the engine 1, and the engine 1 drives the travel pump 2 to rotate. The output end of the travel pump 2 is connected to the travel motor 3 through a hydraulic oil pipe, and the oil discharged by the travel pump 2 drives the travel motor 3 to rotate. The output end of the travel motor 3 is connected to the input end of a gearbox 4, and the output end of the gearbox 4 is connected to the drive axle 6 through a drive shaft 5, thereby using the drive axle 6 to drive the wheels 7 to rotate.

[0029] The snow blower power system includes a working pump 8, a working motor 9, and an auger 12. The input end of the working pump 8 is connected in series with the travel pump 2 via a spline, and the working pump 8 is directly driven to rotate by the engine 1. That is, the engine 1 drives the travel pump 2 and the working pump 8 to rotate simultaneously. The output end of the working pump 8 is connected to the working motor 9 via a hydraulic oil pipe, and the working motor 9 is driven to rotate by the oil discharged from the working pump 8. A control valve 10 is provided on the hydraulic oil pipe, which can control the on / off state and flow direction of the oil.

[0030] The output of the working motor 9 is connected in series with the snow-throwing impeller 11 and the auger 12. The auger 12 collects snow and rolls it into the snow-throwing impeller 11. The snow is thrown out of the throwing cylinder 13 by the centrifugal force of the rotating snow-throwing impeller 11. A first reducer 14 is provided between the working motor 9 and the snow-throwing impeller 11. The working pump 8 drives the snow-throwing impeller 11 and the auger 12 to rotate through the first reducer 14. A second reducer 15 is provided between the snow-throwing impeller 11 and the auger 12. The second reducer 15 can match the snow-collecting speed of the auger 12 and the snow-throwing speed of the impeller. There is a certain speed ratio requirement between the two.

[0031] Both the travel pump 2 and the travel motor 3 are equipped with a displacement solenoid valve, which is connected to the controller. The controller controls the displacement of the travel pump 2 and the travel motor 3. The travel motor 3 is also equipped with a pressure sensor to detect the output pressure of the travel motor 3. The pressure sensor is electrically connected to the controller. The load of the loader is determined based on the output pressure of the travel motor 3 measured by the pressure sensor, thereby adjusting the displacement of the travel motor 3 to ensure normal vehicle operation.

[0032] The controller is electrically connected to the control terminal of engine 1 and is used to acquire and adjust the speed of engine 1.

[0033] It also includes a speed setting function switch, an engine speed setting knob, a cruise control switch, and a vehicle speed setting knob. The speed setting function switch, engine speed setting knob, cruise control switch, and vehicle speed setting knob are all located in the cab and connected to the controller, making it convenient for operators to control engine speed and vehicle speed.

[0034] By setting a cruise control switch and a speed setting knob, the loader can travel at a set speed, and the speed can be adjusted by the speed setting knob. By setting an engine speed setting function switch and an engine speed setting knob, the engine speed can be fixed and adjusted, thereby controlling the operating speed of the working pump 8, and thus indirectly controlling the speed of the snow blower to adapt to different snow loads. The engine speed operating range is 800r / min-2000r / min.

[0035] Example 2

[0036] This embodiment provides a loader control method for installing a snowplow, utilizing a loader control system for installing a snowplow as described in Embodiment 1, such as... Figure 2 As shown, it includes the following steps:

[0037] When it is necessary to control the loader speed via the throttle, turn off the cruise control function switch, turn on the gear switch, and the controller detects the throttle opening to confirm the current speed requirement. Based on the current speed requirement, it calculates the engine speed, travel pump and travel motor displacement to achieve throttle control of the loader speed. During this process, the controller also monitors the loader load and brake pedal opening, thereby adjusting the engine speed, travel pump and travel motor displacement in real time to ensure the loader operates normally.

[0038] When it is necessary to move forward at a set speed, turn on the cruise control function switch and turn on the gear switch. The controller reads the speed set on the speed setting knob, calculates the engine speed, travel pump and travel motor displacement required for the set speed, and enables the vehicle to travel at the set speed.

[0039] The calculation process for the loader speed is as follows:

[0040] Hydraulic walking system speed ratio:

[0041] Overall transmission ratio:

[0042] Wheel speed:

[0043] Speed:

[0044] in: This refers to the motor's displacement, measured in ml / r. This refers to the pump's displacement, expressed in ml / r. The overall speed ratio of the drive axle and the gearbox; D is the engine output speed, in r / min; D is the wheel diameter, in m.

[0045] Engine speed, travel pump, and travel motor displacement determine vehicle speed. The controller obtains the current vehicle speed requirement and calculates the required engine speed, travel pump, and travel motor displacement based on the formula mentioned above. The formula includes the wheel diameter D and the overall gear ratio of the drive axle and transmission. The vehicle has known parameters.

[0046] The snowplow's operating speed is controlled by adjusting the engine speed. When the snowplow's operating speed needs to be adjusted, first turn on the engine speed setting function switch. At this time, the controller detects that the engine speed setting function switch is turned on and reads the speed set on the engine speed setting knob. If the set speed is lower than the engine speed required for the current vehicle speed, the engine speed will be automatically adjusted to the minimum speed 'a' required for the current vehicle speed. At this time, the engine speed adjustment range is 'a'-2000 r / min. If the set speed is higher than the engine speed required for the current vehicle speed, the engine will be increased to the set value, and the displacement of the working pump and working motor will be recalculated to ensure that the vehicle speed remains unchanged.

[0047] After the engine speed setting function is turned off, the engine speed will be adjusted to the speed required by the current throttle after a 5-second delay to ensure that the snow inside the snow blower is completely thrown out and to avoid blockage.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A loader control system for mounting a snowplow, characterized in that, The system includes a travel pump, a travel motor, a working pump, a working motor, an engine, and a controller. The input end of the travel pump is connected to the output shaft of the engine, and the output end of the travel pump is connected to the input end of the travel motor via a hydraulic oil pipe. The input end of the working pump is connected to the output shaft of the engine, and the output end of the working pump is connected to the input end of the working motor via a hydraulic oil pipe. The controller is electrically connected to the control end of the engine and the displacement solenoid valves on the travel pump and the travel motor, respectively. The output end of the walking motor is connected to the input end of the gearbox, and the output end of the gearbox is connected to the drive axle through a transmission shaft, thereby using the drive axle to drive the wheels to rotate. The output end of the working motor is connected in series with the snow-throwing impeller and the auger respectively. A first reducer is provided between the working motor and the snow-throwing impeller, and a second reducer is provided between the snow-throwing impeller and the auger. The input end of the working pump is connected in series with the travel pump via a spline, and the engine directly drives the working pump to rotate, that is, the engine drives both the travel pump and the working pump to rotate at the same time. The control system also includes a speed setting function switch and an engine speed setting knob, which are used to fix and adjust the engine speed, thereby controlling the operating speed of the working pump.

2. The loader control system for installing a snowplow as described in claim 1, characterized in that, The output end of the walking motor is connected to the input end of the gearbox, and the output end of the gearbox is connected to the drive axle through a transmission shaft, thereby driving the wheels to rotate.

3. A loader control system for installing a snowplow as described in claim 1, characterized in that, The travel motor is also equipped with a pressure sensor to detect the pressure on the output side of the travel motor. The pressure sensor is electrically connected to the controller, and the load of the loader is determined based on the pressure on the output side of the travel motor measured by the pressure sensor.

4. A loader control system for installing a snowplow as described in claim 1, characterized in that, It also includes a cruise control switch and a speed setting knob, both of which are connected to the controller. The cruise control switch enables the loader to set a driving speed, and the speed setting knob allows the speed to be adjusted.

5. A loader control system for installing a snowplow as described in claim 1, characterized in that, The cruise control switch, vehicle speed setting knob, engine speed setting function switch, and engine speed setting knob are all located in the driver's cab.

6. A loader control method for installing a snowplow, utilizing a loader control system for installing a snowplow as described in any one of claims 1-5, characterized in that, Includes the following steps: When it is necessary to control the loader speed via the throttle, turn off the cruise control function switch, turn on the gear switch, and the controller detects the throttle opening to confirm the current speed requirement. Based on the current speed requirement, it calculates the engine speed, travel pump and travel motor displacement to achieve throttle control of the loader speed. During this process, the controller also monitors the loader load and brake pedal opening, thereby adjusting the engine speed, travel pump and travel motor displacement in real time to ensure the loader operates normally. When it is necessary to move forward at a set speed, turn on the cruise control function switch and turn on the gear switch. The controller reads the speed set on the speed setting knob, calculates the engine speed, travel pump and travel motor displacement required for the set speed, and enables the vehicle to travel at the set speed. The speed of the snow blower is controlled by adjusting the engine speed. When it is necessary to adjust the speed of the snow blower, first turn on the engine speed setting function switch. At this time, the controller detects that the engine speed setting function switch is turned on, reads the speed set on the engine speed setting knob, and adjusts the engine speed according to the required engine speed value for the vehicle speed.

7. A loader control method for installing a snowplow as described in claim 6, characterized in that, The process of adjusting the engine speed according to the required engine speed for the vehicle speed involves: determining whether the set speed is less than the required engine speed for the vehicle speed; if the set speed is less than the required engine speed for the current vehicle speed, the engine speed will be automatically adjusted to the minimum required speed 'a' for the vehicle speed, with the adjustment range being 'a'-2000 r / min; if the set speed is greater than the required engine speed for the current vehicle speed, the engine speed will be increased to the set value.

8. A loader control method for installing a snowplow as described in claim 6, characterized in that, After turning off the engine speed setting function switch, the engine speed will be adjusted to the speed required by the current throttle position after a set delay time.

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