Scram control system and electro-hydraulic control equipment

Abstract

The utility model discloses a scram control system and an electrohydraulic control device, and relates to the technical field of scram control of the electrohydraulic control device, the scram control system is applied to the electrohydraulic control device, the electrohydraulic control device comprises an accelerator pedal and an operating lever, the scram control system is provided with a scram mode, and the operating lever is provided with an accelerator pedal. According to the sudden stop control system, a trigger is arranged in a sudden stop controller, and when a user triggers the trigger, a sudden stop trigger signal is generated; and the sudden stop receiving device has a sudden stop mode, is connected with a voltage analog quantity detection circuit of the electro-hydraulic control equipment, outputs a corresponding voltage analog quantity to the voltage analog quantity detection circuit according to the sudden stop mode when receiving the sudden stop trigger signal, and shields the voltage analog quantity sent by the accelerator pedal and the operating lever. Therefore, the sudden stop control system can suddenly stop the electric control hydraulic equipment under the condition that a power source is not cut off, and casualties or other serious accidents caused by out-of-control descending due to the fact that the dead weight of the equipment is too large after the power source is cut off are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency stop control of electro-hydraulic control equipment, in particular to an emergency stop control system and an electro-hydraulic control equipment. Background Art

[0002] The emergency stop solution for electronically controlled hydraulic equipment (such as excavators) is often achieved by simply cutting off the power source of the equipment, but such a simple solution may hide major safety hazards. After the power source is cut off, the components driven by the hydraulic devices in the electronically controlled hydraulic equipment may fall out of control due to their excessive weight, and this sudden fall is very likely to cause casualties or other serious accidents. Utility Model Content

[0003] The main purpose of the utility model is to propose an emergency stop control system and an electro-hydraulic control device, which aims to solve the problem that after the power source is cut off, since the hydraulic devices are arranged in the electro-hydraulic equipment, the components driven by these devices may cause the equipment to fall out of control due to excessive deadweight, and this sudden fall is very likely to cause casualties or other serious accidents.

[0004] To achieve the above-mentioned purpose, the utility model proposes an emergency stop control system, which is applied to an electro-hydraulic control device, wherein the electro-hydraulic control device includes an accelerator pedal and a joystick, and the emergency stop control system includes:

[0005] An emergency stop controller, wherein a trigger is provided in the emergency stop controller, and is used to generate an emergency stop trigger signal when the user triggers the trigger;

[0006] An emergency stop receiving device, the emergency stop receiving device is communicatively connected to the emergency stop controller, the emergency stop receiving device has an emergency stop mode, and is used to connect to the voltage analog detection circuit of the electro-hydraulic control equipment. When the emergency stop trigger signal is received, the emergency stop receiving device outputs the corresponding voltage analog quantity to the voltage analog detection circuit according to the emergency stop mode, and at the same time, the main controller in the emergency stop receiving device shields the voltage analog quantity sent when the accelerator pedal and the joystick are operated by the user.

[0007] In one embodiment, the emergency stop controller is communicatively connected to the emergency stop receiving device via wired and / or wireless means.

[0008] In one embodiment, the emergency stop receiving device comprises:

[0009] A communication module, used for receiving an emergency stop trigger signal from the emergency stop controller;

[0010] A main controller, the main controller is electrically connected to the communication module, the main controller has an emergency stop mode, and is used to generate an emergency stop shielding control signal according to the emergency stop trigger signal received by the communication module according to the emergency stop mode, and the main controller is used to shield the voltage analog quantity sent by the accelerator pedal and the joystick when they are manipulated by the user according to the emergency stop shielding control signal;

[0011] A CAN-to-AO module, wherein the input end of the CAN-to-AO module is electrically connected to the communication module, and the output end of the CAN-to-AO module is electrically connected to the voltage analog detection circuit, and is used to send an emergency stop shielding control signal according to the emergency stop controller, and control the CAN-to-AO module to output the corresponding voltage analog quantity to the voltage analog detection circuit according to the emergency stop mode.

[0012] In one implementation, the communication module is one or more of a CAN communication module, a 433 communication module, a Bluetooth communication module, and a WIFI communication module.

[0013] In one embodiment, the emergency stop control system comprises:

[0014] A signal amplifier, the signal amplifier is respectively connected to the emergency stop controller and the emergency stop receiving device for amplifying the emergency stop trigger signal output by the emergency stop controller and outputting it to the emergency stop receiving device. In one embodiment, the trigger includes one or more of a mechanical button, a touch button, a toggle button, and a knob button.

[0015] The utility model also provides an electro-hydraulic control device, which includes the emergency stop control system as described above.

[0016] The technical solution of the utility model adopts an emergency stop control system, which is applied to an electro-hydraulic control device. The electro-hydraulic control device includes an accelerator pedal and a joystick. The emergency stop control system includes: an emergency stop controller, a trigger is arranged in the emergency stop controller, and is used to generate an emergency stop trigger signal when the user triggers the trigger; an emergency stop receiving device, the emergency stop receiving device is communicatively connected to the emergency stop controller, the emergency stop receiving device has an emergency stop mode, and is used to connect to a voltage analog detection circuit of the electro-hydraulic control device. When the emergency stop trigger signal is received, the emergency stop receiving device outputs a corresponding voltage analog quantity to the voltage analog quantity detection circuit according to the emergency stop mode, and at the same time, the main controller in the emergency stop receiving device shields the voltage analog quantity sent when the accelerator pedal and the joystick are manipulated by the user. In this way, the user can trigger the emergency stop controller to send an emergency stop trigger signal to the emergency stop receiving device. When the emergency stop receiving device receives the emergency stop trigger signal, the emergency stop receiving device outputs the corresponding voltage analog quantity to the voltage analog quantity detection circuit according to the emergency stop mode. At the same time, the main controller in the emergency stop receiving device shields the voltage analog quantity sent when the accelerator pedal and the joystick are operated by the user, so that the electro-hydraulic control device will not respond when the accelerator pedal and the joystick are triggered by the user. In this way, the emergency stop control system can perform an emergency stop on the electronically controlled hydraulic equipment without cutting off the power source, thereby avoiding uncontrolled descent due to excessive weight of the equipment after cutting off the power source, causing casualties or other serious accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 This is a structural schematic diagram of an embodiment of an emergency stop control system provided by the utility model.

[0019] Figure 2 This is a structural schematic diagram of another embodiment of the emergency stop control system provided by the utility model.

[0020] Description of Figure Numbers:

[0021] 1-emergency stop controller; 11-trigger; 2-emergency stop receiving device; 21-communication module; 22-main controller; 23-CAN to AO module; 3-accelerator pedal; 4-joystick; 5-voltage analog detection circuit; 51-joystick voltage analog detection circuit; 52-accelerator pedal voltage analog detection circuit; 6-signal amplifier.

[0022] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0026] This utility model proposes an emergency stop control system, please refer to Figure 1 , applied to an electro-hydraulic control device, the electro-hydraulic control device includes an accelerator pedal 3 and a joystick 4, and the emergency stop control system includes:

[0027] An emergency stop controller 1, wherein a trigger 11 is provided in the emergency stop controller 1, and is used to generate an emergency stop trigger signal when a user triggers the trigger 11;

[0028] An emergency stop receiving device 2, wherein the emergency stop receiving device 2 is communicatively connected to the emergency stop controller 1, and the emergency stop receiving device 2 has an emergency stop mode, and is used to connect to a voltage analog detection circuit 5 of an electro-hydraulic control device. When an emergency stop trigger signal is received, the emergency stop receiving device 2 outputs a corresponding voltage analog quantity to the voltage analog quantity detection circuit 5 according to the emergency stop mode, and at the same time, the main controller 22 in the emergency stop receiving device 2 shields the voltage analog quantity sent when the accelerator pedal 3 and the joystick 4 are operated by the user.

[0029] In this embodiment, it is worth noting that the electro-hydraulic control equipment (such as excavators and bulldozers) refers to equipment that can adjust the hydraulic device by receiving electrical signals. In the prior art, the user outputs a voltage analog quantity by operating the accelerator pedal 3 and the joystick 4. The voltage analog quantity detection circuit 5 includes an accelerator pedal voltage analog quantity detection circuit 52 and a joystick voltage analog quantity detection circuit 51. The accelerator pedal voltage analog quantity detection circuit 52 detects the accelerator pedal voltage analog quantity output by the accelerator pedal 3, and the joystick voltage analog quantity detection circuit 51 detects the joystick voltage analog quantity output by the joystick 4. The electro-hydraulic control equipment is driven according to the joystick voltage analog quantity and the accelerator pedal voltage analog quantity.

[0030] In this embodiment, the emergency stop receiving device 2 has an emergency stop mode. When the emergency stop receiving device 2 receives the emergency stop trigger signal sent by the trigger 11 triggered by the user in the emergency stop controller 1, the emergency stop receiving device 2 generates a voltage analog quantity equivalent to the joystick 4 and the accelerator pedal 3 not being operated by the user according to the emergency stop mode and sends it to the voltage analog quantity detection circuit 5. At the same time, the main controller 22 in the emergency stop receiving device 2 shields the voltage analog quantity sent when the accelerator pedal 3 and the joystick 4 are operated by the user, so that the emergency stop control system can perform an emergency stop on the electro-hydraulic control device without cutting off the power source of the electro-hydraulic control device.

[0031] Specifically, the trigger 11 includes one or more of a mechanical button, a touch button, a toggle button and a knob button, so as to realize the trigger 11 in the emergency stop controller 1.

[0032] In one embodiment, the emergency stop controller 1 is communicatively connected to the emergency stop receiving device 2 via wired and / or wireless means.

[0033] In this embodiment, when the emergency stop controller 1 is connected to the emergency stop receiving device 2 in a wired manner, a CAN transceiver is provided in the emergency stop receiving device 2, and the emergency stop controller 1 communicates with the emergency stop receiving device 2 through the CAN transceiver. At this time, the emergency stop controller 1 can be arranged in the electro-hydraulic control device, or it can be arranged outside the electro-hydraulic control device. When the emergency stop controller 1 is arranged outside the electro-hydraulic control device, it can be connected to the emergency stop receiving device 2 through a cable. When the emergency stop controller 1 is arranged in the electro-hydraulic control device, it can be arranged on the inner shell of the electro-hydraulic control device for user operation; when the emergency stop controller 1 is connected to the emergency stop receiving device 2 in a wireless manner, one or more of a 4G communication module, a 5G communication module, a 433 communication module, a Bluetooth communication module and a WIFI communication module can be provided in the emergency stop controller 1 to communicate with the emergency stop receiving device 2 wirelessly.

[0034] In one embodiment, the emergency stop receiving device 2 comprises:

[0035] The communication module 21 is used to receive the emergency stop trigger signal of the emergency stop controller 1;

[0036] A main controller 22, the main controller 22 is electrically connected to the communication module 21, the main controller 22 has an emergency stop mode, and is used to generate an emergency stop shielding control signal according to the emergency stop trigger signal received by the communication module 21 according to the emergency stop mode, and the main controller 22 is used to shield the voltage analog quantity sent when the accelerator pedal 3 and the joystick 4 are manipulated by the user according to the emergency stop shielding control signal;

[0037] A CAN-to-AO module 23, wherein the input end of the CAN-to-AO module 23 is electrically connected to the communication module 21, and the output end of the CAN-to-AO module 23 is electrically connected to the voltage analog detection circuit 5, and is used to send an emergency stop shielding control signal according to the emergency stop controller 1, and control the CAN-to-AO module 23 to output the corresponding voltage analog quantity to the voltage analog detection circuit 5 according to the emergency stop mode.

[0038] In this embodiment, when the communication module 21 receives the emergency stop trigger signal of the emergency stop controller 1 by wired and / or wireless means, the main controller 22 generates an emergency stop shielding control signal according to the emergency stop mode through the received emergency stop trigger signal, and sends it to the CAN to AO module 23, so as to control the CAN to AO module 23 to output the corresponding voltage analog quantity. At this time, even if the main controller 22 receives the voltage analog quantity generated by the user operating the accelerator pedal 3 and the joystick 4, it does not respond to the voltage analog quantity. Specifically, the main controller 22 is set to VCU (vehicle control unit). The communication module 21 in the emergency stop receiving device 2 can be set to one or more of a 4G communication module, a 5G communication module, a 433 communication module, a Bluetooth communication module and a WIFI communication module to communicate wirelessly with the emergency stop controller 1.

[0039] In one embodiment, please refer to Figure 2 , the emergency stop control system comprises:

[0040] The signal amplifier 6 is respectively connected to the emergency stop controller 1 and the emergency stop receiving device 2 for communication, and is used for amplifying the emergency stop trigger signal output by the emergency stop controller 1 and then outputting it to the emergency stop receiving device 2 .

[0041] In this embodiment, the electro-hydraulic control equipment usually needs to operate in an environment with poor wireless signal coverage. In this case, when the emergency stop controller 1 needs to be connected to the emergency stop receiving device 2 by wireless communication, the emergency stop controller 1 may be placed at a relatively far distance from the emergency stop receiving device 2. Such a layout may cause the emergency stop receiving device 2 to be unable to effectively receive the emergency stop trigger signal from the emergency stop controller 1. In order to overcome this problem, the emergency stop control system in this embodiment adds the function of a signal amplifier. After being amplified, the emergency stop trigger signal output by the emergency stop controller 1 can be more powerfully transmitted to the emergency stop receiving device 2, ensuring the reliable reception of the emergency stop trigger signal, thereby improving the safety performance and reliability of the entire system. In this way, when the wireless signal is weak or the emergency stop controller is far away from the equipment, the emergency stop control system can still work effectively, ensuring the safety of operators and equipment.

[0042] The utility model also proposes an electro-hydraulic control device, which includes the emergency stop control system described above. Since the electro-hydraulic control device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0043] In an embodiment of the utility model, an emergency stop control system is adopted and applied to an electro-hydraulic control device, wherein the electro-hydraulic control device includes an accelerator pedal and a joystick, and the emergency stop control system includes: an emergency stop controller, wherein a trigger is arranged in the emergency stop controller, and is used to generate an emergency stop trigger signal when the user triggers the trigger; an emergency stop receiving device, wherein the emergency stop receiving device is communicatively connected to the emergency stop controller, and the emergency stop receiving device has an emergency stop mode and is used to connect to a voltage analog detection circuit of the electro-hydraulic control device, and the emergency stop receiving device is used to output a corresponding voltage analog quantity to the voltage analog quantity detection circuit according to the emergency stop mode when receiving the emergency stop trigger signal, and at the same time, the main controller in the emergency stop receiving device shields the voltage analog quantity sent when the accelerator pedal and the joystick are operated by the user. In this way, the user can trigger the emergency stop controller to send an emergency stop trigger signal to the emergency stop receiving device. When the emergency stop receiving device receives the emergency stop trigger signal, the emergency stop receiving device outputs the corresponding voltage analog quantity to the voltage analog quantity detection circuit according to the emergency stop mode. At the same time, the main controller in the emergency stop receiving device shields the voltage analog quantity sent when the accelerator pedal and the joystick are operated by the user, so that the electro-hydraulic control device will not respond when the accelerator pedal and the joystick are triggered by the user. In this way, the emergency stop control system can perform an emergency stop on the electronically controlled hydraulic equipment without cutting off the power source, thereby avoiding uncontrolled descent due to excessive weight of the equipment after cutting off the power source, causing casualties or other serious accidents.

Claims

1. An emergency stop control system, applied to an electro-hydraulic control device, the electro-hydraulic control device comprising an accelerator pedal and a joystick, characterized in that: The emergency stop control system comprises: An emergency stop controller, wherein a trigger is provided in the emergency stop controller, and is used to generate an emergency stop trigger signal when the user triggers the trigger; An emergency stop receiving device, the emergency stop receiving device is communicatively connected to the emergency stop controller, the emergency stop receiving device has an emergency stop mode, and is used to connect to the voltage analog detection circuit of the electro-hydraulic control equipment. When the emergency stop trigger signal is received, the emergency stop receiving device outputs the corresponding voltage analog quantity to the voltage analog detection circuit according to the emergency stop mode, and at the same time, the main controller in the emergency stop receiving device shields the voltage analog quantity sent when the accelerator pedal and the joystick are operated by the user.

2. The emergency stop control system according to claim 1, characterized in that: The emergency stop controller is connected to the emergency stop receiving device in a wired and / or wireless manner.

3. The emergency stop control system according to claim 1, characterized in that: The emergency stop receiving device comprises: A communication module, used for receiving an emergency stop trigger signal from the emergency stop controller; A main controller, the main controller is electrically connected to the communication module, the main controller has an emergency stop mode, and is used to generate an emergency stop shielding control signal according to the emergency stop trigger signal received by the communication module according to the emergency stop mode, and the main controller is used to shield the voltage analog quantity sent by the accelerator pedal and the joystick when they are manipulated by the user according to the emergency stop shielding control signal; A CAN-to-AO module, wherein the input end of the CAN-to-AO module is electrically connected to the communication module, and the output end of the CAN-to-AO module is electrically connected to the voltage analog detection circuit, and is used to send an emergency stop shielding control signal according to the emergency stop controller, and control the CAN-to-AO module to output the corresponding voltage analog quantity to the voltage analog detection circuit according to the emergency stop mode.

4. The emergency stop control system according to claim 3, characterized in that: The communication module is one or more of a CAN communication module, a 433 communication module, a Bluetooth communication module and a WIFI communication module.

5. The emergency stop control system according to claim 1, characterized in that: The emergency stop control system comprises: A signal amplifier is respectively connected to the emergency stop controller and the emergency stop receiving device for communication, and is used for amplifying the emergency stop trigger signal output by the emergency stop controller and then outputting it to the emergency stop receiving device.

6. The emergency stop control system according to claim 1, characterized in that: The trigger includes one or more of a mechanical button, a touch button, a toggle button and a knob button.

7. An electro-hydraulic control device, characterized in that: The electro-hydraulic control device comprises the emergency stop control system according to any one of claims 1 to 6.

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