Underground LHD Loading Clutch Control Method and System

Abstract

The present invention discloses a method and system for controlling the loading clutch of an underground loader. The present invention includes receiving a first application control signal or a second application control signal from an interaction interface; after receiving the first application control signal, obtaining the real-time state of the loader, and controlling whether the gearbox enters the clutch state according to the real-time state of the loader. And an underground loader loading clutch control system applying the above method. The present invention judges whether the loader enters the loading working condition according to the interaction information, the vehicle speed signal and the moving percentage of the brake pedal stroke. When it is confirmed that the loader enters the loading working condition, a power switching signal will be transmitted to the gearbox controller to control the gearbox to enter the clutch state, so as to achieve the purpose of improving the working efficiency of the loader and saving energy consumption at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of mining machinery, and more specifically, to a method and system for controlling the loading clutch of an underground loader. Background Art

[0002] An underground loader is a transportation and loading device for underground tunnels. Loading is a very important part of the loader's operation, and the loading efficiency and flexibility have become important performance evaluation criteria for the loader. Part of the power of the loader's power system is allocated to the walking function of the loader, and the remaining part of the power is used for the loading function. How to enable the loader to obtain the maximum power during the loading process and minimize the power allocated to the walking function is the key part to improve the loading efficiency.

[0003] According to the above problems, after retrieval, the invention creation name is: Small Loader (Chinese Patent Application No.: CN02268270.8, Application Date: July 13, 2002). This application case consists of a loading mechanism, a steering mechanism, a transmission system, a walking mechanism, an engine, etc. Its feature is that a transfer case is provided between the engine and the transmission system. The driving shaft of the transfer case is connected to the transmission shaft, gearbox, and clutch of the engine. The two ends of the driven shaft of the transfer case are respectively connected to the front axle and the rear axle. The rear axle adopts the national standard 130# rear axle and the gearbox adopts the 212# national standard. It is a small loader with a high degree of standardization, low fuel consumption, simple maintenance, convenient matching, and economic practicality, which solves the technical problems of power matching and power distribution of existing small loaders.

[0004] The above-mentioned loader has the problem of low loading efficiency caused by inaccurate power distribution. Summary of the Invention

[0005] 1. Technical Problems to be Solved by the Invention

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a method for controlling the loading clutch of an underground loader. According to the interaction information, vehicle speed signal, and the moving percentage of the brake pedal stroke, it is judged whether the loader enters the loading working condition. When it is confirmed that the loader enters the loading working condition, a power switching signal is sent to the gearbox controller to control the gearbox to enter the clutch state, so as to achieve the purpose of improving the working efficiency of the loader and saving energy consumption at the same time.

[0007] 2. Technical Solution

[0008] To achieve the above purpose, the technical solution provided by the present invention is as follows:

[0009] A method for controlling the loading clutch of an underground loader according to the present invention includes:

[0010] Receiving a first application control signal or a second application control signal from an interaction interface;

[0011] When the first application control signal is received, the real-time state of the scraper is obtained, and the gearbox is controlled to enter the clutch state according to the real-time state of the scraper.

[0012] As a further improvement of the present invention, the first application control signal is an application to enter a clutch control state.

[0013] As a further improvement of the present invention, the method for obtaining the real-time status of the scraper after receiving the first application control signal is:

[0014] Get the running speed of the scraper;

[0015] Gets the brake pedal travel percentage.

[0016] As a further improvement of the present invention, the method for controlling whether the gearbox enters the clutch state according to the real-time state of the scraper includes:

[0017] When the speed of the scraper is higher than the preset value, the transmission will not enter the clutch state regardless of the percentage of brake pedal travel;

[0018] When the load is lower than the preset value, the brake pedal travel movement percentage is greater than the preset value, and the transmission enters the clutch state.

[0019] As a further improvement of the present invention, the second application control signal is an application for releasing the clutch control state.

[0020] As a further improvement of the present invention, when the second application control signal is received, the clutch control state is released.

[0021] An underground scraper loading clutch control system, using the above-mentioned underground scraper loading clutch control method, comprises:

[0022] An interaction module, wherein the interaction module sends a first signal or a second signal to the controller module after receiving the interaction information;

[0023] An operation status module, wherein the operation status module obtains a real-time status of the vehicle and transmits a third signal to the controller module;

[0024] a controller module, the controller module being configured to receive the first signal, the second signal and the third signal, and the controller module transmitting a fourth signal to the transmission control module according to the first signal and the third signal; and

[0025] A transmission control module receives the fourth signal and controls the transmission to enter a clutch state according to the fourth signal.

[0026] As a further improvement of the present invention, the controller module transmits a fifth signal to the transmission control module according to the second signal.

[0027] As a further improvement of the present invention, the transmission control module controls the transmission to disengage the clutch state according to the fifth signal.

[0028] As a further improvement of the present invention, the operating state module includes a brake pedal stroke detection unit and a vehicle operating speed detection unit. The brake pedal stroke detection unit is used to detect the stroke of the brake pedal, and the vehicle operating speed detection unit detects the vehicle operating speed.

[0029] 3. Beneficial effects

[0030] Adopting the technical solution provided by the present invention, compared with the prior art, it has the following beneficial effects:

[0031] The present invention judges whether the scraper enters the loading working condition according to the interaction information, the vehicle speed signal and the moving percentage of the brake pedal stroke. When it is confirmed that the scraper enters the loading working condition, a power switching signal will be transmitted to the transmission controller to control the transmission to enter the clutch state, so as to improve the working efficiency of the scraper and save energy consumption at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the steps of the method in an embodiment;

[0033] Figure 2 It is a judgment logic block diagram in an embodiment;

[0034] Figure 3 It is a schematic diagram of the signal transmission of each module in an embodiment.

[0035] Explanation of the reference numerals in the schematic diagram:

[0036] 100, interaction module;

[0037] 200, operating state module; 201, brake pedal stroke detection unit; 202, vehicle operating speed detection unit;

[0038] 300, controller module;

[0039] 400, transmission control module; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] To further understand the content of the present invention, the present invention will be described in detail with reference to the drawings and embodiments.

[0041] The structures, proportions, sizes, etc. shown in the accompanying drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of clear narration and are not used to limit the scope of implementation. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope that the present invention can implement.

[0042] It should be noted that the concepts such as "first", "second", etc. mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of the functions executed by these devices, modules or units or their interdependent relationships.

[0043] It should be noted that the modifications of "one" and "multiple" mentioned in this disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless clearly specified otherwise in the context, it should be understood as "one or more".

[0044] The names of the messages or information exchanged between multiple devices in the embodiments of this disclosure are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0045] Embodiment 1

[0046] The present invention will be further described below in conjunction with the embodiments. As Figures 1 to 2 shown, a method for controlling the loading clutch of an underground loader includes,

[0047] S100: Receive a first application control signal or a second application control signal from an interaction interface;

[0048] Among them, the first application control signal is an application to enter the clutch control state, that is, the loader confirms to enter the loading working condition. At this time, the power needs to be cut off from the traveling, and all the power of the loader is used for loading, so as to maximize the loading efficiency of the loader. Preferably, the interaction interface is a control panel. The operator sends a clutch control signal to the loader through the touch control panel. When it is confirmed that the clutch control signal is received, it is confirmed that the loader is operating in a working condition that requires frequent loading, and then the working state of the loader is continuously monitored. When the loader does not receive the signal from the control panel, it is confirmed that the loader has no clutch control requirement and the normal movement of the loader.

[0049] S200: After receiving the first application control signal, obtain the real-time state of the scraper, and control whether the gearbox enters the clutch state according to the real-time state of the scraper. The method of obtaining the real-time state of the scraper when receiving the first application control signal is as follows:

[0050] S201: Obtain the running speed of the scraper truck. A speed sensor is set on the scraper. The speed sensor detects the running speed of the scraper in real time. After the speed sensor detects the speed of the scraper, it transmits the speed signal to the controller. The controller obtains the real-time speed detected by the speed sensor and compares it with the preset speed in the database. When the real-time speed is greater than the preset value, the scraper maintains its current state and continues to run; when the real-time speed is less than the preset value, the controller starts to obtain the percentage of the brake pedal stroke.

[0051] S202: Obtain the moving percentage of the brake pedal stroke. A displacement sensor is set on the brake pedal of the scraper. The displacement sensor detects the displacement distance of the brake pedal and transmits the detected displacement distance of the brake pedal to the controller in real time. The controller compares the detected displacement distance of the brake pedal with the preset displacement distance of the brake pedal in the database. When the displacement distance of the brake pedal is less than the preset value of the displacement distance of the brake pedal in the database, the scraper maintains its current state and continues to run; when the displacement distance of the brake pedal is less than the preset value of the displacement distance of the brake pedal in the database, the controller sends a clutch signal to the gearbox controller, and the gearbox controller controls the gearbox to cut off the walking power output and output all the output power to the loading system, improving the loading efficiency and saving energy.

[0052] Among them, the method of controlling whether the gearbox enters the clutch state according to the real-time state of the scraper includes:

[0053] When the speed of the scraper is higher than the preset value, regardless of the moving percentage of the brake pedal stroke, the gearbox does not enter the clutch state; when the speed of the scraper is higher than the preset value, preferably, the preset value is 3 km / h, that is, when the speed sensor detects that the running speed of the scraper is greater than 3 km / h, it can be judged that the state of the scraper is a continuous moving state. Regardless of the percentage of the moving brake pedal stroke, the controller will not send a clutch signal to the gearbox controller to control the gearbox to cut off the walking power output, and most of the output power is output to the running system of the scraper.

[0054] When the scraper is lower than the preset value, the percentage of the brake pedal stroke movement is greater than the preset value, and the gearbox enters the clutch state. When the vehicle speed of the scraper is lower than the preset value, which is 3 km / h, that is, when the speed sensor detects that the running speed of the scraper is less than 3 km / h, it can be judged that the state of the scraper is running at a low speed or about to enter the stop state. Then the controller controls the brake pedal displacement sensor to detect the real-time displacement distance of the brake pedal. When the real-time displacement distance of the brake pedal is less than 30% of the total length, it is judged that the scraper is in the state of moving at a low speed at this moment, and the controller does not issue an instruction. At this time, most of the output power is output to the running system of the scraper to make the scraper continue to run.

[0055] Furthermore, when the real-time displacement distance of the brake pedal is greater than 30% of the total length, it is judged at this time that the scraper is already in the braking state or about to enter the braking state. The controller sends a clutch signal to the gearbox controller, and the gearbox controller controls the gearbox to cut off the walking power output and output all the output power to the loading system. This improves the loading efficiency and saves energy.

[0056] S300: When the second application control signal is received, the clutch control state is released. The second application control signal is an application to release the clutch control state.

[0057] The second application control signal is an application to release the clutch control state. When the scraper has received the first application signal but has not entered the loading working condition, the controller no longer executes the S200 step, that is, when the controller receives the second application signal, the controller no longer obtains the real-time state of the scraper, and the scraper keeps moving normally;

[0058] Furthermore, when the scraper has entered the loading working condition after receiving the first application control signal, the controller sends a clutch release signal to the gearbox controller at this time, and the gearbox controller controls the gearbox to cut off the loading power output and switch most or all of the power from the loading system to the moving system.

[0059] Embodiment 2

[0060] As Figures 1 to 3 shown, an underground scraper loading clutch control system uses the above-mentioned underground scraper loading clutch control method, including an interaction module 100, an operating state module 200, a controller module 300, and a gearbox control module 400. The interaction module 100 sends a first signal or a second signal to the controller module 300 after receiving the interaction information;

[0061] The operating status module 200 obtains the real-time status of the vehicle and transmits a third signal to the controller module 300; the controller module 300 is used to receive the first signal, the second signal and the third signal, and the controller module 300 transmits a fourth signal to the transmission control module 400 according to the first signal and the third signal. The transmission control module 400 receives the fourth signal and controls the transmission to enter the clutch state according to the fourth signal.

[0062] The interactive module 100 receives the interactive information, and the interactive module 100 is electrically connected to the controller module 300. The interactive information is a key signal or a touch signal input by the operator through the control panel. Specifically, the interactive signal is to enter the clutch control state or release from the clutch control state. After receiving the interactive signal, the interactive module sends a first signal and a second signal to the controller module. Specifically, the first signal is a signal for applying to enter the clutch control state, indicating that the operator wants the scraper to change from the running mode to the loading mode by controlling the clutch to the closed state for operation, and the second signal is a signal for applying to release the clutch control state, indicating that the operator wants the scraper to change from the loading mode to the open state by controlling the clutch to the running mode for operation.

[0063] In one embodiment, after the controller module 300 receives the first signal, it indicates that the operator needs to switch the power of the loader to the loading system. At this time, the controller module 300 monitors the operating status of the loader in real time, and determines whether the loader switches most or all of the power to the loading system based on the operating status of the loader.

[0064] Specifically, the controller module 300 receives the third signal obtained by the operating status module 200, wherein the third signal is a real-time status signal of the shovel loader, including the vehicle's operating speed and the displacement distance of the brake pedal. The operating status module 200 first obtains the operating speed of the shovel loader and sends the operating speed of the shovel loader to the controller module 300. After the controller module 300 receives the operating speed of the shovel loader, it compares the operating speed of the shovel loader obtained at this moment with a preset vehicle operating speed critical value. When the actual operating speed of the shovel loader is greater than the preset vehicle operating speed critical value, the controller module 300 continues to obtain the actual operating speed signal of the shovel loader emitted by the speed sensor.

[0065] When the actual operating speed of the scraper is less than the preset critical value of the vehicle operating speed, the controller module 300 starts to obtain the displacement signal of the brake pedal sent by the operating status module 200. After the controller module 300 receives the displacement signal of the brake pedal of the scraper, it compares the displacement data of the brake pedal of the scraper obtained at this moment with the preset critical value of the displacement distance of the vehicle brake pedal. When the actual displacement value of the brake pedal of the scraper is less than the preset critical value of the displacement distance of the vehicle brake pedal, the controller module 300 continues to obtain the displacement distance numerical signal of the brake pedal until the controller module 300 detects through the operating status module 200 that the displacement value of the brake pedal is greater than the preset critical value of the displacement distance of the vehicle brake pedal. At this time, it is confirmed that the vehicle enters the loading state.

[0066] The controller module 300 sends a clutch signal to the transmission control module 400, and the transmission control module 400 controls the transmission to cut off the walking power output. At this time, all the output power that should support the walking of the scraper is output to the loading system. Outputting all the output power to the loading system can greatly improve the loading efficiency and save energy consumption.

[0067] Specifically, the operating status module 200 includes a brake pedal stroke detection unit 201 and a vehicle operating speed detection unit 202. The brake pedal stroke detection unit 201 is used to detect the stroke of the brake pedal, and the vehicle operating speed detection unit 202 detects the vehicle operating speed.

[0068] In one embodiment, through on-site operation experiments, it is obtained that the preset critical value of the vehicle operating speed is set to 3 km / h. That is, when the vehicle operating speed is less than 3 km / h, the operating status module 200 starts to detect the distance signal of the brake pedal. The critical value of the displacement distance of the vehicle brake pedal is 30% of the total brake length. When the operator steps on the brake and the displacement length of the brake pedal is greater than 30% of its own length, the controller module 300 sends a clutch signal to the transmission control module 400, and the transmission control module 400 controls the transmission to cut off the walking power output.

[0069] The controller module 300 transmits a fifth signal to the transmission control module 400 according to the second signal. The transmission control module 400 controls the transmission to release the clutch state according to the fifth signal. The second signal is a signal for applying to release the clutch control state. When the controller module receives the second signal, it determines that the scraper needs to change from the loading state to the moving state. At this time, the controller module 300 sends the fifth signal to the transmission control module 400. The fifth signal is to release the clutch state. Then the transmission control module 400 controls the transmission to cut off the loading power output and switch most or all of the power from the loading system to the moving system. At this time, most or all of the hydraulic power of the scraper is used for its own movement, effectively preventing the power waste of the scraper and saving production costs for the enterprise in disguise.

[0070] The above schematically describes the present invention and its embodiments. This description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative work without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A method for controlling the clutch of an underground scraper. Features: include, Receiving a first application control signal or a second application control signal from an interactive interface; After receiving the first application control signal, the real-time state of the scraper is obtained, and the gearbox is controlled to enter the clutch state according to the real-time state of the scraper; The method for obtaining the real-time status of the scraper after receiving the first application control signal is: Get the running speed of the scraper; Get the brake pedal travel percentage; The method for controlling whether the gearbox enters the clutch state according to the real-time state of the scraper comprises: When the speed of the scraper is higher than the preset value, the transmission will not enter the clutch state regardless of the percentage of brake pedal travel; When the load is lower than the preset value, the brake pedal travel movement percentage is greater than the preset value, and the transmission enters the clutch state.

2. The underground scraper loading clutch control method according to claim 1, Features: The first application control signal is an application to enter the clutch control state.

3. The underground scraper loading clutch control method according to claim 1, Features: The second application control signal is for applying to release the clutch control state.

4. The underground scraper loading clutch control method according to claim 3, Features: When the second application control signal is received, the clutch control state is released.

5. An underground scraper loading clutch control system, using the underground scraper loading clutch control method according to any one of claims 1 to 4, Features: include, An interaction module, wherein the interaction module sends a first signal or a second signal to the controller module after receiving the interaction information; An operation status module, wherein the operation status module obtains a real-time status of the vehicle and transmits a third signal to the controller module; a controller module, the controller module being configured to receive the first signal, the second signal and the third signal, and the controller module transmitting a fourth signal to the transmission control module according to the first signal and the third signal; and A transmission control module receives the fourth signal and controls the transmission to enter a clutch state according to the fourth signal.

6. The underground scraper loading clutch control system according to claim 5, Features: The controller module transmits a fifth signal to a transmission control module based on the second signal.

7. The underground scraper loading clutch control system according to claim 6, Features: The transmission control module controls the transmission to release the clutch state according to the fifth signal.

8. The underground loader loading clutch control system according to claim 7, Features: The operating status module includes a brake pedal stroke detection unit and a vehicle running speed detection unit. The brake pedal stroke detection unit is used to detect the stroke of the brake pedal, and the vehicle running speed detection unit detects the vehicle running speed.

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