A braking system for a pure electric loader with active brake

Abstract

The utility model discloses a kind of brake systems of pure electric loader with initiative brake, belong to engineering machinery braking technical field.It includes VCU controller, reversing radar controller and reversing radar that are sequentially communicated connection, VCU controller is electrically connected with electric proportional brake valve;VCU controller is configured with initiative brake module, the initiative brake module compares the distance data detected by reversing radar with the threshold value set and meets condition when sending initiative brake instruction to electric proportional brake valve and carries out initiative brake.By reversing radar, the distance between the rear of vehicle and obstacle is collected in real time and the real-time distance is sent to VCU controller, the initiative brake module in VCU controller compares the real-time distance with the threshold value set, and when real-time distance is equal to the threshold value set, initiative brake module sends initiative brake instruction to electric proportional brake valve and carries out initiative brake operation.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery braking technology, specifically a braking system for a pure electric loader with active braking. Background Technology

[0002] The braking system, as a very important core system of engineering machinery, is the key to ensuring the safe operation of the entire vehicle.

[0003] Currently, loaders are large in size and weight, with high inertia and a large blind spot behind them. When reversing, sudden situations may occur, and the driver may not have enough time to react, leading to danger. Therefore, there is an urgent need for a braking system that can actively brake based on the distance to obstacles during reversing. Utility Model Content

[0004] 1. Technical problem to be solved by the utility model

[0005] The purpose of this invention is to solve the problem that when an emergency occurs while a loader is reversing, the driver's delayed reaction leads to late braking, causing a dangerous situation.

[0006] 2. Technical Solution

[0007] To solve the above problems, the technical solution provided by this utility model is as follows:

[0008] The present invention relates to a braking system for a pure electric loader with active braking, comprising a VCU controller, a reversing radar controller, and a reversing radar connected in sequence via communication, wherein the VCU controller is electrically connected to an electric proportional braking valve.

[0009] The VCU controller is equipped with an active braking module. The active braking module compares the distance data detected by the reversing radar with a set threshold. When the conditions are met, it sends an active braking command to the proportional brake valve to perform active braking.

[0010] Preferably, the VCU controller is also electrically connected to a braking force air pressure sensor and an air storage tank pressure sensor.

[0011] Preferably, it also includes a front brake and a rear brake, the front brake being connected to a front booster pump via a brake hose, the rear brake being connected to a rear booster pump via a brake hose, the front booster pump and the rear booster pump being connected to a relay valve via brake hoses, and the relay valve being connected to an air reservoir via brake hoses.

[0012] Preferably, the relay valve is connected to the three-way shuttle valve via a brake hose, the three-way shuttle valve is connected to the foot brake valve and the electric proportional brake valve via brake hoses respectively, and the foot brake valve and the electric proportional brake valve are connected to the air reservoir via brake hoses.

[0013] Preferably, the air inlet of the relay valve is equipped with a metal filter.

[0014] Preferably, the output pressure curve of the foot brake valve is a bi-segment curve with respect to the pedal, and the first half of the curve is configured to be relatively flat compared to the second half.

[0015] Preferably, the electro-proportional braking valve is current-controlled, and the output pressure is directly proportional to the magnitude of the current.

[0016] Preferably, the three-way shuttle valve selects the maximum pressure output at both inlet ends.

[0017] Preferably, the reversing radar is an ultrasonic radar.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0020] This utility model discloses a braking system for a pure electric loader with active braking, comprising a VCU controller, a reversing radar controller, and a reversing radar connected in sequence via communication. The VCU controller is electrically connected to an electro-proportional braking valve. The VCU controller is equipped with an active braking module, which compares the distance data detected by the reversing radar with a set threshold. When the condition is met, the active braking module sends an active braking command to the electro-proportional braking valve to perform active braking. The reversing radar collects the distance between the rear of the vehicle and obstacles in real time and sends the real-time distance to the VCU controller. The active braking module in the VCU controller compares the real-time distance with the set threshold, and when the real-time distance equals the set threshold, the active braking module sends an active braking command to the electro-proportional braking valve to perform active braking operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a braking system with active braking for a pure electric loader according to the present invention.

[0022] Explanation of the labels in the diagram:

[0023] 1. Air reservoir; 2. Electro-proportional brake valve; 3. Foot brake valve; 4. Three-way shuttle valve; 5. Rear booster pump; 6. Rear brake; 7. Front brake; 8. Front booster pump; 9. Braking force air pressure sensor; 10. Relay valve; 11. Air reservoir pressure sensor; 12. VCU controller; 13. Reversing radar controller; 14. Reversing radar; 15. Brake hose. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0027] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0028] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Example 1

[0031] See attached document Figure 1 The braking system of a pure electric loader with active braking in this embodiment includes a VCU controller 12, a reversing radar controller 13 and a reversing radar 14 connected in sequence. The VCU controller 12 is electrically connected to an electric proportional brake valve 2.

[0032] The VCU controller 12 is equipped with an active braking module. The active braking module compares the distance data detected by the reversing radar 14 with a set threshold. When the conditions are met, it sends an active braking command to the proportional brake valve 2 to perform active braking.

[0033] In this embodiment, the braking system uses a reversing radar 14 to collect the distance between the rear of the vehicle and an obstacle in real time and sends the real-time distance to the VCU controller 12. The active braking module in the VCU controller 12 compares the real-time distance with a set threshold. When the real-time distance is equal to the set threshold, the active braking module sends a braking command to the proportional brake valve 2 to perform active braking operation.

[0034] The VCU controller 12 is also electrically connected to a braking force air pressure sensor 9 and an air tank pressure sensor 11. It also includes a front brake 7 and a rear brake 6. The front brake 7 is connected to a front booster pump 8 via a brake hose 15, and the rear brake 6 is connected to a rear booster pump 5 via a brake hose 15. The front booster pump 7 and the rear booster pump 8 are connected to a relay valve 10 via a brake hose 15, and the relay valve 10 is connected to the air tank 1 via a brake hose 15. The relay valve 10 is connected to a three-way shuttle valve 4 via a brake hose 15, and the three-way shuttle valve 4 is connected to a foot brake valve 3 and an electro-proportional brake valve 2 via brake hoses 15. The foot brake valve 3 and the electro-proportional brake valve 2 are connected to the air tank 1 via brake hoses 15.

[0035] The active braking module sends an active braking command to the electric proportional braking valve 2 to perform active braking operation. Specifically, the electric proportional braking valve 2 opens, allowing the high-pressure gas in the air reservoir 1 to flow into the control port of the relay valve 10 through the three-way shuttle valve 4. After the relay valve 10 opens, the high-pressure gas flows into the rear booster pump 5 and / or the front booster pump 7, realizing active braking operation, avoiding collisions, and providing safety during vehicle operation.

[0036] The relay valve 10 has a metal filter screen at its air inlet. This effectively prevents impurities from entering the valve body, which could damage the valve and compromise safety. Furthermore, the air outlet has a silencer to effectively reduce exhaust noise.

[0037] The output pressure curve of the foot brake valve 3 is a bi-segment curve with respect to the pedal, and the first half of the curve is configured to be relatively flat compared to the second half. The electro-proportional brake valve 2 is current-controlled, and the output pressure is directly proportional to the current. The three-way shuttle valve 4 selects the maximum pressure output at its two inlet ends. The reversing radar 14 is an ultrasonic radar.

[0038] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A braking system for a pure electric loader with active braking, characterized in that: It includes a VCU controller (12), a reversing radar controller (13) and a reversing radar (14) connected in sequence, and the VCU controller (12) is electrically connected to an electric proportional brake valve (2); The VCU controller (12) is equipped with an active braking module. The active braking module compares the distance data detected by the reversing radar (14) with the set threshold and sends an active braking command to the proportional brake valve (2) to perform active braking when the conditions are met.

2. The braking system of a pure electric loader with active braking according to claim 1, characterized in that: The VCU controller (12) is also electrically connected to a braking force air pressure sensor (9) and an air storage tank pressure sensor (11).

3. The braking system of a pure electric loader with active braking according to claim 2, characterized in that: It also includes a front brake (7) and a rear brake (6), the front brake (7) being connected to a front booster pump (8) via a brake hose (15), the rear brake (6) being connected to a rear booster pump (5) via a brake hose (15), the front booster pump (8) and the rear booster pump (5) being connected to a relay valve (10) via a brake hose (15), and the relay valve (10) being connected to an air reservoir (1) via a brake hose (15).

4. The braking system of a pure electric loader with active braking according to claim 3, characterized in that: The relay valve (10) is connected to the three-way shuttle valve (4) via the brake hose (15). The three-way shuttle valve (4) is connected to the foot brake valve (3) and the electric proportional brake valve (2) via the brake hose (15). The foot brake valve (3) and the electric proportional brake valve (2) are connected to the air tank (1) via the brake hose (15).

5. The braking system of a pure electric loader with active braking according to claim 4, characterized in that: The inlet of the relay valve (10) is equipped with a metal filter.

6. The braking system of a pure electric loader with active braking according to claim 4, characterized in that: The output pressure curve of the foot brake valve (3) is a two-segment curve with respect to the pedal, and the first half of the curve is configured to be relatively flat compared to the second half.

7. The braking system of a pure electric loader with active braking according to claim 4, characterized in that: The electro-proportional brake valve (2) is current-controlled, and the output pressure is directly proportional to the current.

8. The braking system of a pure electric loader with active braking according to claim 4, characterized in that: The three-way shuttle valve (4) selects the maximum pressure output at both inlet ends.

9. A braking system for a pure electric loader with active braking according to claim 4, characterized in that: The reversing radar (14) is an ultrasonic radar.

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