Non-road vehicle and cab safety protection device thereof

Abstract

The present invention discloses an off-road vehicle and its cab safety protection device, including a guardrail assembly arranged on the cab door for protection; a posture detection assembly for detecting the opening and closing state of the guardrail assembly; a main control module connected to the guardrail assembly and the posture detection assembly respectively, the main control module controls the non-road vehicle to stop and start when the guardrail assembly is in an open state according to the detection signal of the posture detection assembly, and controls the non-road vehicle to start normally when the guardrail assembly is in a closed state. With the device, the guardrail assembly is arranged on the cab door, the posture detection assembly detects the opening and closing state of the guardrail assembly, the main control module stops the non-road vehicle from starting when the guardrail assembly is in an open state, and controls the non-road vehicle to start normally when the guardrail assembly is in a closed state; the cab door is safely protected, the driver's safe operation is standardized, and potential safety hazards are eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of off-road vehicle safety protection, and more specifically, to a cab safety protection device, and also to an off-road vehicle comprising the cab safety protection device. Background Art

[0002] With the rapid development of the national economy, the demand for industrial non-road vehicles is increasing, and the safety of forklift operations has also received more attention. The traditional safety protection for drivers has the following problems: 1) The safety operation training for drivers is complicated, but the effect is still not obvious; 2) The driver makes mistakes and is careless. When the cockpit door fails, the cab crew cannot find the problem immediately. As a result, the driver starts the vehicle to operate the forklift when the cockpit door is not closed, which poses a great safety risk and is prone to safety accidents. Summary of the invention

[0003] In view of this, the first object of the present invention is to provide a cab safety protection device to solve the problems of existing off-road vehicles in which the driver starts the vehicle to operate when the cab door is not closed, which poses a great safety risk. The second object of the present invention is to provide an off-road vehicle including the above-mentioned cab safety protection device.

[0004] In order to achieve the above first object, the present invention provides the following technical solutions:

[0005] A cab safety protection device for a non-road vehicle, comprising:

[0006] A guardrail assembly provided on the cabin door for protection;

[0007] A posture detection component for detecting the opening and closing state of the guardrail component;

[0008] A main control module is connected to the guardrail assembly and the posture detection assembly respectively. The main control module makes a judgment based on the detection signal of the posture detection assembly, and controls the non-road vehicle to stop starting when the guardrail assembly is in an open state, and controls the non-road vehicle to start normally when the guardrail assembly is in a closed state.

[0009] Optionally, the guardrail assembly comprises:

[0010] A guardrail bracket rotatably fixedly connected to the cab door frame via a first rotating shaft;

[0011] The guardrail bracket is arranged on one side of the cab door frame and the guardrail bracket rotates in a vertical plane.

[0012] Optionally, the guardrail assembly further comprises:

[0013] A rebound component is connected to the guardrail bracket at one end and to the cab door frame at the other end, and the rebound component provides rebound force for closing the guardrail bracket.

[0014] Optionally, the guardrail bracket includes:

[0015] At least two support bodies and rotatable ends arranged along the length direction of the support bodies;

[0016] The first rotating shaft is respectively provided between one end of any one of the bracket bodies and the door frame of the cab, and the other end of any one of the bracket bodies is respectively rotatably fixedly connected to the rotatable end portion via a second rotating shaft.

[0017] Optionally, the rebound component is specifically a gas spring.

[0018] Optionally, the posture detection component is specifically a micro switch, and the micro switch is opened when the guardrail component is in an open state, and the micro switch is closed when the guardrail component is in a closed state.

[0019] Optionally, the main control module is specifically a controller, and the device further includes:

[0020] A preheat start switch having a first contact connected to a power source, a second contact of the preheat start switch connected to the controller, and a third contact of the preheat start switch connected in sequence to a normally open contact of a relay and an off-road vehicle engine;

[0021] The first end of the micro switch is connected to the controller, and the second end of the micro switch is connected to the second contact of the preheating start switch;

[0022] When the preheating start switch is in the pre-start gear, the first contact and the second contact of the preheating start switch are connected, and when the micro switch is closed, the controller outputs a start signal to control the normally open contact of the relay to close;

[0023] When the preheating start switch is in the running gear, the first contact and the third contact of the preheating start switch are connected, and when the normally open contact of the relay is closed, the circuit in which it is located is connected, and the engine of the non-road vehicle is started.

[0024] Optionally, the main control module further includes:

[0025] The vehicle operation monitoring unit is used to control the off-road vehicle to stop and trigger an alarm device to alarm when the off-road vehicle is in operation and detects that the guardrail assembly is in an open state.

[0026] Optionally, the alarm device is specifically a buzzer.

[0027] The cab safety protection device provided by the present invention comprises: a guardrail assembly arranged on the cab door for protection; a posture detection assembly for detecting the opening and closing state of the guardrail assembly; a main control module connected to the guardrail assembly and the posture detection assembly respectively, the main control module controls the non-road vehicle to stop starting when the guardrail assembly is in the open state according to the detection signal of the posture detection assembly, and controls the non-road vehicle to start normally when the guardrail assembly is in the closed state.

[0028] The cab safety protection device provided by the present invention is arranged on the cab door through a guardrail assembly, and the opening and closing state of the guardrail assembly is detected by a posture detection assembly. When the guardrail assembly is in an open state, the main control module stops the off-road vehicle from starting, and controls the off-road vehicle to start normally when the guardrail assembly is in a closed state; whether the off-road vehicle has the starting conditions is determined by the state of the guardrail assembly, and the cab door is safely protected, the driver's safe operation is standardized, and safety hazards are eliminated.

[0029] In order to achieve the above-mentioned second purpose, the present invention also provides a non-road vehicle, which includes any one of the above-mentioned cab safety protection devices. Since the above-mentioned cab safety protection device has the above-mentioned technical effects, the non-road vehicle having the cab safety protection device should also have the corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the structure of a cab safety protection device provided by an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of a closed state of a cab safety protection device provided by an embodiment of the present invention;

[0033] Figure 3 A schematic diagram of the opening state of the cab safety protection device provided by an embodiment of the present invention;

[0034] Figure 4 This is an electrical schematic diagram of a micro-switch provided in an embodiment of the present invention.

[0035] The following are marked in the accompanying drawings:

[0036] Guardrail assembly 1, bracket body 11, rotatable end 12, gas spring 2, micro switch 3, cab 4. DETAILED DESCRIPTION

[0037] The embodiment of the invention discloses a cab safety protection device to solve the problems of existing off-road vehicles in which the driver starts the vehicle to operate when the cab door is not closed, which results in great safety risks.

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-Figure 3 , Figure 1 A schematic diagram of the structure of a cab safety protection device provided by an embodiment of the present invention; Figure 2 A schematic diagram of a closed state of a cab safety protection device provided by an embodiment of the present invention; Figure 3 A schematic diagram of the open state of the cab safety protection device provided in an embodiment of the present invention.

[0040] In a specific embodiment, the cab safety protection device of a non-road vehicle provided by the present invention comprises:

[0041] A guardrail assembly 1 is provided on the cab door for protection; the guardrail assembly 1 is detachably fixedly connected to the cab door, and the connection method between the two can be set as needed. The guardrail assembly 1 can be spliced ​​from multiple railings, or set as a grid-type guardrail.

[0042] A posture detection component for detecting the opening and closing state of the guardrail component 1;

[0043] The posture detection component can be specifically a position switch, a pressure sensor or a travel switch, etc. In one embodiment, it is set as a pressure sensor. When the posture detection component is closed, it contacts the pressure sensor to generate pressure. The pressure sensor sends the detected pressure signal to the main control module. The main control module compares the pressure signal with the preset pressure value. When the detected pressure value is greater than or equal to the preset pressure value, it is determined that the guardrail component 1 is in a closed state. When the detected pressure value is less than the preset pressure value, it is determined that the guardrail component 1 is in an open state. The posture detection component and the main control module are connected by a communication line, or through a wireless communication module. The posture detection component and the main control module are respectively provided with Bluetooth modules, and wireless communication between the two is achieved through Bluetooth, which is within the protection scope of the present invention.

[0044] The main control module is connected to the guardrail assembly 1 and the posture detection assembly respectively. The main control module makes a judgment based on the detection signal of the posture detection assembly. When the guardrail assembly 1 is in the open state, the main control module controls the non-road vehicle to stop starting, and when the guardrail assembly 1 is in the closed state, the main control module controls the non-road vehicle to start normally.

[0045] The main control module can be set as a control device such as a controller, a PC or a display, or an MCU chip, a CPU chip, etc. The main control module makes a judgment based on the detection signal of the posture detection component to control the start state of the non-road vehicle based on the judgment result.

[0046] The cab safety protection device provided by the present invention is applied, in which the guardrail assembly 1 is arranged on the cab door, and the opening and closing state of the guardrail assembly 1 is detected by the posture detection assembly. When the guardrail assembly 1 is in the open state, the main control module stops the start of the off-road vehicle, and controls the normal start of the off-road vehicle when the guardrail assembly 1 is in the closed state; it is determined whether the off-road vehicle has the starting conditions based on the state of the guardrail assembly 1, and the cab door is safely protected, the driver's safe operation is standardized, and safety hazards are eliminated.

[0047] Specifically, the guardrail assembly 1 includes:

[0048] A guardrail bracket rotatably fixedly connected to the cab door frame via a first rotating shaft;

[0049] The guardrail bracket is arranged on one side of the cab door frame and the guardrail bracket rotates in a vertical plane.

[0050] The guardrail bracket and the cab door frame can be rotatably fixedly connected by setting a hinge. In this case, the first rotation axis can be set in the vertical direction to achieve opening and closing along the inside and outside of the cab; in other embodiments, the first rotation axis can be set in the horizontal direction so that the guardrail bracket can rotate in the vertical plane. Alternatively, through holes are set on the guardrail bracket and the cab door frame respectively, and bolts are set in the through holes to form the first rotation axis.

[0051] Furthermore, the guardrail bracket is arranged on one side of the cab door frame and the guardrail bracket rotates in a vertical plane. This arrangement saves installation space, and at the same time, the travel space of the guardrail bracket is simplified. The guardrail bracket is arranged on one side of the cab door frame, and is opened and closed on one side, which is convenient for installation, simplifies the installation steps and shortens the installation time. The guardrail bracket rotates in a vertical plane, and it can be seen that the first rotation axis is arranged horizontally, and preferably the guardrail bracket flips from a horizontal state to a vertical state.

[0052] Furthermore, the guardrail assembly 1 further comprises:

[0053] A rebound component is connected to the guardrail bracket at one end and to the cab door frame at the other end, and the rebound component provides rebound force for closing the guardrail bracket.

[0054] The rebound component is preferably a spring, such as a gas spring 2, and the two ends of the gas spring 2 are respectively hinged to the guardrail bracket and the cab door frame. When the driver drives the guardrail bracket to open and close, the guardrail bracket flips from a horizontal state to a vertical state in the vertical plane, and the gas spring 2 is stretched; when the driver drives the guardrail bracket to close, the guardrail bracket rotates from a vertical state to a horizontal state, and at the same time, the gas spring 2 contracts and provides elastic force for the guardrail bracket, so that the guardrail bracket rebounds better to the initial position of the guardrail bracket during the closing process. At the same time, the elastic force of the gas spring 2 provides a certain locking force at the initial position of the guardrail bracket to prevent the guardrail bracket from shaking or swaying. In other embodiments, the rebound component can be selected according to needs, all of which are within the protection scope of the present invention.

[0055] Specifically, the guardrail bracket includes:

[0056] At least two bracket bodies 11 and rotatable ends 12 arranged along the length direction of the bracket bodies 11;

[0057] A first rotation axis is respectively provided between one end of any bracket body 11 and the door frame of the cab, and the other end of any bracket body 11 is rotatably fixedly connected to the rotatable end portion 12 via a second rotation axis.

[0058] The bracket body 11 and the rotatable end 12 form a rectangular frame, and a first rotation axis is respectively provided between one end of each bracket body 11 and the cab door frame, and a second rotation axis is respectively provided between the other end of each bracket body 11 and the rotatable end 12 to form a connecting rod mechanism. It can be understood that when the guardrail bracket rotates in the vertical plane, it is turned upward by the rotatable end 12. Preferably, the rotatable end 12 is in a vertical state during the rotation of the bracket body 11. When the bracket body 11 is closed, the rotatable end 12 is vertically arranged with the bracket body 11, and when the bracket body 11 is opened, the rotatable end 12 is parallel to the bracket body 11. The first rotation axis and the second rotation axis are respectively arranged horizontally.

[0059] In one embodiment, the posture detection component is specifically a micro switch 3. When the guardrail component 1 is in an open state, the micro switch 3 is opened, and when the guardrail component 1 is in a closed state, the micro switch 3 is closed.

[0060] Furthermore, the main control module is specifically a controller, and the device also includes:

[0061] A preheat start switch having a first contact connected to a power source, a second contact of the preheat start switch connected to a controller, and a third contact of the preheat start switch connected in sequence to a normally open contact of a relay and an off-road vehicle engine;

[0062] The first end of the micro switch 3 is connected to the controller, and the second end of the micro switch 3 is connected to the second contact of the preheating start switch;

[0063] When the preheating start switch is in the pre-start gear, the first contact and the second contact of the preheating start switch are connected, and when the micro switch 3 is closed, the controller outputs a start signal to control the normally open contact of the relay to close;

[0064] When the preheat start switch is in the running gear, the first contact and the third contact of the preheat start switch are connected, and when the normally open contact of the relay is closed, the circuit in which it is located is turned on, and the engine of the non-road vehicle is started.

[0065] See also Figure 4 , Figure 4 The electrical schematic diagram of the micro switch provided by the embodiment of the present invention, wherein KZ is the controller, S1 is the micro switch 3, QK1 is the preheating start switch in the pre-start gear, QK2 is the preheating start switch in the running gear, K1 is the normally open contact of the relay, FUSE1, FUSE2, FUSE3 are fuses, M is the engine, and BAT is the battery power supply; when the preheating start switch is in QK1, the circuit is connected to the safety guardrail micro switch S1 through FUSE3, and the driver should close the cabin door and guardrail assembly 1 in the cabin. At this time, S1 is closed, and the controller KZ obtains B+, ACC+ and the safety guardrail input signal, outputs the start signal, and the start relay coil K1 is turned on, and the start relay switch contact K1 is controlled to close. When the preheating start switch is turned to the running gear QK2, the circuit is connected to the engine M through FUSE1 and the closed K1, and the engine M is controlled to start, and then the vehicle can be controlled to move forward and backward normally, and the multi-way valve can be controlled. If the safety guardrail micro switch S1 is not closed, the controller KZ cannot output the start signal, the start relay switch contact K1 will be in the open state, the starter motor M cannot run, and the vehicle cannot start.

[0066] Furthermore, the main control module also includes:

[0067] The vehicle operation monitoring unit is used to control the off-road vehicle to stop moving and trigger an alarm device to alarm when the off-road vehicle is in operation and detects that the guardrail component is in an open state. The alarm device is specifically a buzzer.

[0068] After the vehicle starts running, if the forklift driver suddenly opens the hatch, the micro switch S1 is disconnected, the controller KZ does not output an action signal, the vehicle stops moving forward and backward, the multi-way valve stops working, and the controller controls the alarm device to sound an alarm to remind the operator to pay attention to safety and close the hatch immediately, closing the micro switch S1.

[0069] Based on the cab safety protection device of the off-road vehicle provided in the above embodiments, the present invention also provides an off-road vehicle, including a cab 4, and the off-road vehicle also includes any one of the cab safety protection devices in the above embodiments. Since the off-road vehicle adopts the cab safety protection device in the above embodiments, please refer to the above embodiments for the beneficial effects of the off-road vehicle.

[0070] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0071] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

Claims

1. A cab safety protection device for a non-road vehicle, characterized in that: include: A guardrail assembly provided on the cabin door for protection; A posture detection component for detecting the opening and closing state of the guardrail component; A main control module connected to the guardrail assembly and the posture detection assembly respectively, wherein the main control module makes a judgment based on the detection signal of the posture detection assembly, and controls the non-road vehicle to stop starting when the guardrail assembly is in an open state, and controls the non-road vehicle to start normally when the guardrail assembly is in a closed state; The guardrail assembly comprises: A guardrail bracket rotatably fixedly connected to the cab door frame via a first rotating shaft; The guardrail bracket is arranged on one side of the cab door frame and the guardrail bracket rotates in a vertical plane; The guardrail assembly also includes: A rebound component connected to the guardrail bracket at one end and to the cab door frame at the other end, the rebound component providing a rebound force for closing the guardrail bracket; The guardrail bracket comprises: At least two support bodies and rotatable ends arranged along the length direction of the support bodies; The first rotating shaft is respectively provided between one end of any of the bracket bodies and the door frame of the cab, and the other end of any of the bracket bodies is rotatably fixedly connected to the rotatable end portion via a second rotating shaft; The rotatable end is in a vertical state during the rotation of the bracket body; The rebound component is specifically a gas spring; The main control module is specifically a controller, and the device further includes: A preheat start switch having a first contact connected to a power source, a second contact of the preheat start switch connected to the controller, and a third contact of the preheat start switch connected in sequence to a normally open contact of a relay and an off-road vehicle engine; The posture detection component is specifically a micro switch, a first end of the micro switch is connected to the controller, and a second end of the micro switch is connected to the second contact of the preheating start switch; When the preheating start switch is in the pre-start gear, the first contact and the second contact of the preheating start switch are connected, and when the micro switch is closed, the controller outputs a start signal to control the normally open contact of the relay to close; When the preheating start switch is in the running gear, the first contact and the third contact of the preheating start switch are connected, and when the normally open contact of the relay is closed, the circuit in which it is located is connected, and the engine of the non-road vehicle is started.

2. The cab safety protection device according to claim 1, characterized in that: The micro switch is opened when the guardrail assembly is in an open state, and is closed when the guardrail assembly is in a closed state.

3. The cab safety protection device according to claim 1, characterized in that: The main control module also includes: The vehicle operation monitoring unit is used to control the off-road vehicle to stop and trigger an alarm device to alarm when the off-road vehicle is in operation and detects that the guardrail assembly is in an open state.

4. The cab safety protection device according to claim 3, characterized in that: The alarm device is specifically a buzzer.

5. A non-road vehicle, comprising a cab, characterized in that: It also includes a cab safety protection device as described in any one of claims 1-4.

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