Braking energy-saving control device of electric loader

Abstract

The utility model discloses an electric loader braking energy-saving control device which comprises a brake pedal, a pedal opening data acquisition mechanism, a walking motor controller and a walking motor, the brake pedal is installed on an electric loader, the pedal opening data acquisition mechanism comprises an angle sensor and a connecting shaft, and the connecting shaft and a rotating shaft of the brake pedal coaxially extend; one end of the rotating shaft is connected with the rotating shaft, the other end of the rotating shaft is connected with a signal input port of the angle sensor so that the rotating angle of the brake pedal can be collected through the angle sensor when the brake pedal is treaded, the rotating shaft is sleeved with a reset spring, and the angle sensor is in signal connection with a vehicle control unit on the electric loader. The whole vehicle controller is in communication connection with the walking motor controller, the walking motor controller is electrically connected with the walking motor, and the brake pedal is connected with a front axle brake disc and a rear axle brake disc of the electric loader through the hydraulic brake pipeline, so that electric brake and mechanical brake can be achieved, and brake actions and abrasion of axle brake pads can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy -conserving control equipment technical field especially relates to electric loader brake energy -conserving control device. BACKGROUND

[0002] With the increase of engineering machinery oil consumption, the construction cost is higher and higher, electric loader has been widely applied under the specific application working condition, mainly applied to power plant, coal plant and other working condition construction. Electric loader brake system is generally mechanical or hydraulic system, realizes the whole machine braking through the brake pad of the car bridge that is directly clamped by stepping on the brake pedal, when the brake pressure reaches the set limit, feedback to the control module, control module sends signal to the walking motor control system, and then controls the walking motor to realize braking. In the brake process, the mechanical brake is started first, after reaching the brake pressure, the control module cuts off the walking power, realizes electric braking.

[0003] However, this control sequence and mode cause the brake pad to wear too fast, cannot recover the braking energy through the brake or can only intelligently recover a small amount of braking energy, resulting in relatively high vehicle energy consumption, low equipment walking efficiency, short endurance time and low driving comfort.

[0004] Therefore, how to effectively set an electric loader brake energy -conserving control device to improve the braking operation comfort of the operator, prolong the service life of the brake pad, prolong the endurance time and use efficiency of the equipment has become the primary problem to be solved. UTILITY MODEL CONTENT

[0005] The electric loader brake energy -conserving control device can effectively reduce the brake action, is safe to use, can effectively improve the energy recovery efficiency in the braking process, prolong the endurance time of the electric loader, improve the driving comfort, can greatly reduce the wear of the car bridge brake pad, prolong the service life of the brake system and the car bridge.

[0006] The embodiment of the application provides a kind of electric loader brake energy-saving control device, including brake pedal, pedal opening degree data acquisition mechanism, walking motor controller and walking motor, wherein the brake pedal is installed on electric loader, for staff to step on, wherein the pedal opening degree data acquisition mechanism includes angle sensor and connecting shaft, the connecting shaft is coaxially extended with the rotating shaft of the brake pedal, one end of the connecting shaft is connected with the rotating shaft, and the other end is connected with the signal input port of the angle sensor, so that the rotating angle of the brake pedal can be acquired by the angle sensor when stepping on the brake pedal, the rotating shaft is provided with reset spring, the angle sensor is signal connected with the vehicle controller on electric loader, the vehicle controller is communication connected with the walking motor controller, the walking motor controller is electrically connected with the walking motor, and the brake pedal is connected with the front and rear axle brake disc of electric loader through hydraulic brake pipeline.

[0007] In a possible implementation, the brake pedal is installed on the electric loader through a pedal mounting bracket, and the angle sensor is fixedly installed on the pedal mounting bracket through a locking screw.

[0008] In a possible implementation, the connecting shaft is an integral structure, the connecting shaft is coaxially embedded in the rotating shaft at the central position of the rotating shaft, and the connecting shaft and the rotating shaft are connected through a vertically distributed connecting pin.

[0009] In a possible implementation, the connecting shaft is a split structure, including a rotating shaft connecting shaft, a sensor connecting shaft and an end fastener, the rotating shaft connecting shaft is coaxially embedded in the rotating shaft at the central position of the rotating shaft, the end fastener is fixedly connected to one end of the rotating shaft connecting shaft on the outer side of the rotating shaft, the sensor connecting shaft is fixedly sleeved on the other end of the rotating shaft connecting shaft, and the outer side end of the sensor connecting shaft away from the rotating shaft connecting shaft is in the form of a plate or a semicircle and is inserted into the signal input port of the angle sensor.

[0010] In a possible implementation, the rotating shaft connecting shaft is provided with at least one annular groove near one end of the end fastener, the end fastener is a clasp spring, and the clasp spring is sleeved in the annular groove.

[0011] In a possible implementation, the connecting shaft further includes a radial limiting sleeve, the radial limiting sleeve is embedded in the rotating shaft and sleeved on one end of the rotating shaft connecting shaft near the end fastener, and the radial limiting sleeve is located on the inner side of the annular groove.

[0012] In a possible implementation, the model of the vehicle controller is EV2274A.

[0013] Beneficial effects: compared with the prior art, the electric loader brake energy-saving control device provided by the application can realize real-time collection of the stroke angle of the brake pedal through the pedal opening degree data acquisition mechanism arranged on the brake pedal, when the opening degree data of the brake pedal detected by the vehicle controller is less than the set threshold value, the electric brake is realized through the walking motor, when the opening degree data of the brake pedal detected by the vehicle controller reaches and exceeds the set threshold value, the brake pedal realizes mechanical brake through the hydraulic brake pipeline to hold the front and rear axle brake discs, so that the brake energy-saving control device can realize electric brake and mechanical brake at the same time, can effectively reduce the brake action, is more safe in braking, can effectively improve the energy recovery efficiency in the braking process, prolongs the endurance time, can greatly reduce the wear of the axle brake pad, and further prolongs the service life of the brake system and the axle.

[0014] These and other objects, features and advantages of the present application will become apparent with reference to the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The structure schematic diagram of the electric loader brake energy-saving control device of the application is shown.

[0016] Figure 2 The partial cross-sectional structure schematic diagram of the electric loader brake energy-saving control device of the application is shown.

[0017] Figure 3 The explosion structure schematic diagram of the pedal opening degree data acquisition mechanism in the application is shown.

[0018] Figure 4 The control principle schematic diagram of the electric loader brake energy-saving control device of the application is shown. DETAILED DESCRIPTION

[0019] The following description is used to disclose the present application so that those skilled in the art can implement the present application. The preferred embodiments in the following description are only used as examples, and other obvious modifications can be thought by those skilled in the art. The basic principles of the present application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0020] Those skilled in the art should understand that in the disclosure of the specification, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the above terms cannot be understood as a limitation on the utility model.

[0021] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0022] Reference Figures 1 to 4 The embodiment of the present application provides a kind of electric loader brake energy-saving control device, including brake pedal 10, pedal opening degree data acquisition mechanism, walking motor controller and walking motor, wherein the brake pedal 10 is installed on electric loader, for staff to step on, wherein when stepping on brake pedal 10, rotating shaft 11 on brake pedal 10 directional rotation, whereby the travel angle of brake pedal 10 can be directly determined by the rotation angle of rotating shaft 11, or opening.

[0023] The pedal opening degree data acquisition mechanism includes angle sensor 20 and connecting shaft 30, wherein the connecting shaft 30 extends coaxially with the rotating shaft 11 of the brake pedal 10, and one end of the connecting shaft 30 is connected to the rotating shaft 11 to be driven by the rotating shaft 11 to rotate synchronously, in addition, the other end of the connecting shaft 30 is connected to the signal input port 201 of the angle sensor 20, so that the rotating angle of the brake pedal 10 can be collected by the angle sensor 20 when the brake pedal 10 is stepped on. The rotating shaft 11 is sleeved with a reset spring 12, so that when the staff's foot moves away from the brake pedal 10, the rotating shaft 11 can drive the brake pedal 10 to reset based on the action of the reset spring 12. The angle sensor 20 is signal-connected with the vehicle controller on the electric loader, the vehicle controller is communication-connected with the walking motor controller, and the walking motor controller is electrically connected with the walking motor, thereby forming electric brake, in addition, the brake pedal 10 is connected to the front and rear axle brake disc of the electric loader through hydraulic brake pipeline, thereby forming mechanical brake.

[0024] Specifically, during the operation of the electric loader, the angle sensor 20 collects the rotation angle data of the brake pedal 10 in real time through the connecting shaft 30, and transmits the data to the vehicle controller. When the vehicle controller detects that the rotation angle data of the brake pedal 10 is less than the set threshold value, the traveling motor is controlled by the traveling motor controller to perform electric braking. When the vehicle controller detects that the rotation angle of the brake pedal 10 reaches and exceeds the set threshold value, the brake pedal 10 directly clamps the front and rear axle brake discs of the electric loader through the hydraulic brake pipeline to perform mechanical braking. The set travel threshold value can be changed and set through the human-machine interface according to the working conditions and personal driving characteristics and preferences.

[0025] Therefore, the electric loader brake energy-saving control device provided by the application can simultaneously realize electric braking and mechanical braking, or electromechanical combined braking, can effectively reduce brake action, make braking safer, can effectively improve the energy recovery efficiency during braking, save energy consumption, prolong the endurance time, and can also improve the driving comfort, greatly reduce the wear of the axle brake pad, and prolong the service life of the brake system and the axle.

[0026] The brake pedal 10 is installed on the electric loader through the pedal mounting bracket 40. The angle sensor 20 is fixedly installed on the pedal mounting bracket 40 through the locking screw 21.

[0027] In one embodiment, in combination Figure 2 , the connecting shaft 30 is of an integral structure, which is simple in structure and easy to manufacture and maintain. The connecting shaft 30 is coaxially embedded in the rotating shaft 11 at the center position of the rotating shaft 11, and the connecting shaft 30 and the rotating shaft 11 are connected through the vertically distributed connecting pin 31.

[0028] In another embodiment, in combination Figure 3 , the connecting shaft 30 is of a split structure, including a rotating shaft connecting shaft 31, a sensor connecting shaft 32, and an end fastener 33. This way is convenient to install and disassemble. The rotating shaft connecting shaft 31 is coaxially embedded in the rotating shaft 11 at the center position of the rotating shaft 11. The end fastener 33 fixedly connects one end of the rotating shaft connecting shaft 31 on the outer side of the rotating shaft 11. The sensor connecting shaft 32 is fixedly sleeved on the other end of the rotating shaft connecting shaft 31, and the outer side end 321 of the sensor connecting shaft 32 away from the rotating shaft connecting shaft 31 is in the shape of a plate or a semicircle and is inserted into the signal input port 201 of the angle sensor 20.

[0029] Further preferably, the rotating shaft connecting shaft 31 is provided with at least one annular groove 301 at one end close to the end fastener 33, and the end fastener 33 is a snap spring, and the snap spring is sleeved in the annular groove 301, used for fixing the rotating shaft connecting shaft 31 on the rotating shaft 11, wherein the snap spring and the annular groove 301 are matched in a simple structure and have good fixing stability.

[0030] Further preferably, the connecting shaft 30 further comprises a radial limiting sleeve 34, wherein the radial limiting sleeve 34 is embedded in the rotating shaft 11 and sleeved at one end of the rotating shaft connecting shaft 31 close to the end fastener 33, and the radial limiting sleeve 34 is located on the inner side of the annular groove 301, so that the rotating shaft connecting shaft 31 can be better and more comprehensively limited by the radial limiting sleeve 34 in the radial direction of the connecting shaft 30, and the axial limiting effect of the end fastener 33 and the sensor connecting shaft 32 at both ends is formed, so that the overall structural stability of the pedal opening data acquisition mechanism is better.

[0031] The model of the vehicle control unit is EV2274A.

[0032] In addition, the electric loader is generally also provided with a human-machine interface, which is a CAN bus human-machine interface and can display the current state information of the vehicle. The pedal full stroke data collected by the pedal opening data acquisition mechanism, such as 0%-100%, can be input through the interface, and the parameter setting page can be entered according to the current working condition and the driving habit of the individual, and the percentage of the electric brake in the full range, such as 10%, 25%, 40%, etc. can be set, so as to set different energy recovery levels. The set value is transmitted through the CAN bus and kept to the vehicle control unit. The vehicle control unit controls the walking motor controller to realize the control of the rotating speed of the walking motor and realizes the brake according to the instruction and the detected pedal opening data acquisition value state after comprehensive logical calculation.

[0033] For example, the electric loader faces the working condition of small material density or narrow working space. At this time, the brake distance is the primary guarantee factor, and the brake energy recovery effect is not obvious. Therefore, the operator can use the light brake energy recovery state. When the light brake energy recovery state is set, the pedal opening data acquisition mechanism occupies a relatively low percentage of the travel of the brake pedal. Here, it is set to 20%. That is, when the data collected by the pedal opening data acquisition mechanism is outside 20%, the mechanical brake can be early involved to realize mechanical braking, so as to ensure the brake distance and the braking effect.

[0034] Similarly, the electric loader is faced with the conditions of heavy material density, heavy load material handling and transfer, and open place for work, at this time, the vehicle inertia is large, the energy recovery effect is obvious, and the brake distance requirement is not high, so the operator can use the heavy braking energy recovery state, when the heavy braking energy recovery state is set, the pedal opening data acquisition mechanism further increases the percentage of the entire brake pedal stroke, which is set to 50%, according to the opening data value of the brake pedal, when the brake pedal opening is within 50%, the electric brake is in action, the speed and torque of the walking motor are preferentially controlled, or the motor is reversely dragged to realize the cut-off of the walking power, realize the electric brake, and the brake energy recovery is realized by sliding, only when the brake pedal opening data further increases and exceeds the setting value of 50%, the mechanical brake is involved, the no-power sliding process of the vehicle is increased, the energy saving and energy recovery are maximized, and only when the pedal is further stepped on, the mechanical brake is involved to realize the mechanical brake.

[0035] Similarly, when facing the standard working condition, the vehicle can be set to the standard braking energy recovery state, when the standard braking energy recovery state is set, the percentage of the pedal opening data acquisition mechanism to the entire pedal stroke is relatively moderate, and the setting value here is set to 30%, according to the opening data value of the brake pedal, the walking motor speed reduction and brake are preferentially implemented to realize the electric brake, when the brake pedal opening data further increases, the mechanical brake is involved to realize the standard brake distance and energy recovery.

[0036] Those skilled in the art should understand that the above description and the embodiments of the utility model shown in the drawings are only examples and do not limit the utility model. The advantages of the utility model have been completely and effectively realized. The function and structural principle of the utility model have been shown and explained in the embodiments, and the embodiments of the utility model can be any deformation or modification without departing from the principle.

Claims

1. An energy-saving control device for electric loaders, characterized in that, The device includes a brake pedal, a pedal opening data acquisition mechanism, a travel motor controller, and a travel motor. The brake pedal is mounted on an electric loader for operation by the operator. The pedal opening data acquisition mechanism includes an angle sensor and a connecting shaft. The connecting shaft extends coaxially with the rotation axis of the brake pedal. One end of the connecting shaft is connected to the rotation axis, and the other end is connected to the signal input port of the angle sensor, so that the angle sensor can acquire the rotation angle of the brake pedal when it is pressed. A return spring is sleeved on the rotation shaft. The angle sensor is signal-connected to the vehicle controller on the electric loader. The vehicle controller is communicatively connected to the travel motor controller, and the travel motor controller is electrically connected to the travel motor. The brake pedal is connected to the front and rear axle brake discs of the electric loader via hydraulic brake lines.

2. The electric loader braking energy-saving control device as described in claim 1, characterized in that, The brake pedal is mounted on the electric loader via a pedal mounting bracket, and the angle sensor is fixedly mounted on the pedal mounting bracket via locking screws.

3. The electric loader braking energy-saving control device as described in claim 2, characterized in that, The connecting shaft is an integral structure. It is coaxially embedded in the rotating shaft at the center position of the rotating shaft, and the connecting shaft and the rotating shaft are connected by vertically distributed connecting pins.

4. The electric loader braking energy-saving control device as described in claim 2, characterized in that, The connecting shaft is a split structure, including a rotating shaft connecting shaft, a sensor connecting shaft, and an end fastener. The rotating shaft connecting shaft is coaxially embedded in the rotating shaft at the center position. The end fastener is fixedly connected to one end of the rotating shaft connecting shaft on the outer side of the rotating shaft. The sensor connecting shaft is fixedly sleeved on the other end of the rotating shaft connecting shaft. The outer end of the sensor connecting shaft away from the rotating shaft connecting shaft is plate-shaped or semi-circular and inserted into the signal input port of the angle sensor.

5. The electric loader braking energy-saving control device as described in claim 4, characterized in that, The rotating shaft connecting shaft has at least one annular groove at one end near the end fastener, and the end fastener is a retaining spring, which is sleeved in the annular groove.

6. The electric loader braking energy-saving control device as described in claim 5, characterized in that, The connecting shaft also includes a radial limiting sleeve, which is embedded in the rotating shaft and sleeved on the end of the rotating shaft connecting shaft near the end fastener. The radial limiting sleeve is located inside the annular groove.

7. The electric loader braking energy-saving control device as described in claim 1, characterized in that, The vehicle controller is model EV2274A.

Images