Scissor fork type aerial work platform anti-extrusion system and control method thereof

Abstract

The invention discloses a shear fork type aerial work platform anti-extrusion system and a control method. The shear fork type aerial work platform anti-extrusion system comprises a bottom frame; the walking device is arranged at the bottom of the bottom frame and used for driving the operation platform to move; the distance detection device is arranged on the advancing side of the bottom frame and used for detecting the distance of a front obstacle and sending a parking signal; the operating handle is arranged on the working platform and used for sending control information to the controller; the controller is arranged on the bottom frame and used for receiving control information of the distance detection device and the operation handle and controlling the walking device to move. According to the system, the obstacle distance in the vehicle advancing direction is monitored, the walking speed of the vehicle is limited in the deceleration interval, the vehicle is braked in the parking interval, the vehicle in the parking interval continues to walk through the forced walking unlocking button, the situation that the obstacle in the vehicle advancing direction is squeezed is effectively avoided, and safety is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of aerial work platforms, and in particular relates to an anti-extrusion system of a scissor-type aerial work platform and a control method thereof. Background Art

[0002] Aerial work platforms are aerial work equipment that can lift workers and equipment to a specified height. They are widely used in dock and bridge construction, venue layout, urban infrastructure construction and maintenance, etc. Self-propelled scissor-type aerial work platforms are a widely used aerial work equipment. The operator can use the upper control handle to perform actions such as walking, lifting and steering.

[0003] Existing self-propelled aerial work platforms, due to the extended working platform, are usually equipped with a spring line on the operating handle for the convenience of operation, so that the operator can operate the vehicle on the extended platform. Due to the retractable function of the spring line, the operator or the people around the vehicle may be squeezed by the vehicle due to negligence when the operator operates the vehicle on the ground through the handle. In particular, after the operator is squeezed, he cannot release the operating handle to stop the vehicle due to the body's instinctive reaction, which causes serious consequences. Summary of the invention

[0004] In order to at least partially solve the technical problems existing in the above-mentioned prior art, the present invention provides a scissor-type aerial work platform anti-extrusion system and a control method thereof, so as to avoid collision with obstacles during starting or moving, thereby improving driving safety.

[0005] To this end, in one aspect of the present invention, a scissor-type aerial work platform anti-extrusion system is provided, comprising:

[0006] chassis;

[0007] A walking device, the walking device is arranged at the bottom of the chassis and is used to drive the working platform to move;

[0008] A distance detection device, which is arranged on the traveling side of the chassis and is used to detect the distance of the obstacle ahead and send a control signal;

[0009] An operating handle, which is arranged on the working platform and is used to send control information to the controller;

[0010] A controller is arranged on the base frame and is used for receiving control information of the distance detection device and the operating handle and controlling the movement of the walking device.

[0011] Furthermore, in the above-mentioned scissor-type aerial work platform anti-extrusion system, the distance detection device and the output end of the operating handle are connected to the input end of the controller, and the output end of the controller is connected to the walking device.

[0012] Furthermore, in the above-mentioned scissor-type aerial work platform anti-extrusion system, the distance detection devices are grouped into two each, and there is at least one group on the traveling side of the chassis. Every two distance detection devices are arranged in an eight-shaped inclined manner, and the inclination angle is adjusted according to the width of the chassis. The width of the effective detection area of ​​the distance detection device is smaller than the width of the chassis.

[0013] Furthermore, in the above-mentioned scissor-type aerial work platform anti-extrusion system, the operating handle includes:

[0014] A handle rocker, the handle rocker is used to control the walking and steering of the walking device;

[0015] An enabling button, which is used to prevent accidental operation during walking and turning operations;

[0016] A forced walking unlock button is used to release the parking signal sent by the distance detection device.

[0017] In another aspect of the present invention, a method for controlling an anti-extrusion system of a scissor-type aerial work platform is provided, the method comprising:

[0018] The distance detection device is used to set a deceleration interval and a parking interval according to the walking speed of the walking device, and the distance detection device is used to detect obstacles in front. When the distance detection device does not detect an obstacle in the set deceleration interval, the distance detection device controls the controller to switch to a normal walking mode, and sends an operation instruction to the controller through the enable button and the handle joystick, and the controller controls the walking device to move at a normal speed;

[0019] When the distance detection device detects an obstacle within the set deceleration interval, the distance detection device controls the controller to switch to the deceleration walking mode, sends an operation instruction to the controller through the enable button and the handle joystick, and the controller controls the walking device to walk at a snail's pace;

[0020] When the distance detection device detects an obstacle in the set deceleration interval and then drives to the parking interval at a snail's pace, the distance detection device controls the controller to switch to the anti-squeezing parking mode. When the enable button and the joystick send an operation instruction to the controller, the controller controls the walking device to forcibly stop walking.

[0021] When entering the anti-squeeze parking mode, if you need to move the vehicle, continue to press the forced travel unlock button and cooperate with the enable button and handle joystick to send operation instructions to the controller. At this time, the controller controls the travel device to move at a snail's pace.

[0022] The scissor-type aerial work platform anti-extrusion system and control method thereof of the present invention have the following advantages and beneficial effects:

[0023] When the distance detection device detects an obstacle in the deceleration zone, the controller controls the traveling device to decelerate and when the obstacle is detected in the parking zone, the controller controls the traveling device to stop in time, thereby effectively avoiding collision with obstacles during vehicle startup or movement and improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only used to further understand the embodiments of the present invention and constitute a part of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0025] Figure 1 It is a schematic diagram of the overall structure of the anti-extrusion system of the scissor-type aerial work platform of the present invention;

[0026] Figure 2 A schematic diagram of an operating handle of the anti-extrusion system of a scissor-type aerial work platform of the present invention;

[0027] Figure 3 It is a schematic diagram of the distribution of the distance detection device of the anti-extrusion system of the scissor-type aerial work platform of the present invention;

[0028] Figure 4 The present invention is a flow chart of a method for controlling an anti-extrusion system of a scissor-type aerial work platform.

[0029] Description of reference numerals:

[0030] 1: chassis; 2: walking device; 3: distance detection device;

[0031] 4: operating handle, 41: enabling button, 42: handle rocker, 43: forced walking unlock button;

[0032] 5: Controller. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. 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 making creative work are within the scope of protection of the present invention.

[0034] like Figure 1 to Figure 2 As shown, the anti-extrusion system of the scissor-type aerial work platform of the present invention comprises:

[0035] Base frame 1;

[0036] A walking device 2, which is arranged at the bottom of the chassis 1 and is used to drive the working platform to move;

[0037] A distance detection device 3 is arranged on the traveling side of the chassis 1 and is used to detect the distance of the obstacle ahead and send a control signal;

[0038] An operating handle 4, which is arranged on the working platform and is used to send control information to the controller 5;

[0039] The controller 5 is arranged on the base frame 1 and is used for receiving control information from the distance detection device 3 and the operating handle 4 and controlling the movement of the walking device 2 .

[0040] Furthermore, in the above-mentioned scissor-type aerial work platform anti-crushing system, the output ends of the distance detection device 3 and the operating handle 4 are connected to the input end of the controller 5, and the output end of the controller 5 is connected to the walking device 2, thereby effectively ensuring that the control signal can be input to the controller 5 through the distance detection device 3 and the operating handle 4, and the controller 5 converts and controls the walking device 2 to perform actions according to the control information.

[0041] Furthermore, in the above-mentioned scissor-type aerial work platform anti-extrusion system, the distance detection devices 3 are grouped into two, and there is at least one group on the traveling side of the chassis 1. Every two distance detection devices 3 are arranged in an eight-shaped tilted manner, and the tilt angle is adjusted according to the width of the chassis 1. The width of the effective detection area of ​​the distance detection device 3 is smaller than the width of the chassis 1, so that the tilt angle of the distance detection device 3 can be adjusted to adjust the effective detection area.

[0042] Furthermore, in the above-mentioned scissor-type aerial work platform anti-extrusion system, the operating handle 4 includes:

[0043] A handle rocker 42, the handle rocker 42 is used to control the walking device 2 to walk and turn, such as forward, backward, left turn and right turn;

[0044] The enable button 41 is used to prevent accidental touch operation during walking and turning operations, so that the enable button 41 must be pressed simultaneously during walking and turning operations to execute the operation;

[0045] The forced travel unlocking button 43 is used to release the parking signal sent by the distance detection device 3 .

[0046] In another aspect of the present invention, a method for controlling an anti-extrusion system of a scissor-type aerial work platform is provided. The method for controlling an anti-extrusion system of a scissor-type aerial work platform comprises:

[0047] like Figure 3-4 As shown, the distance detection device 3 sets the deceleration interval L2 and the parking interval L3 according to the walking speed of the walking device 2, and detects the obstacle in front through the distance detection device 3. When the distance detection device 3 does not detect the obstacle in the set deceleration interval L2, the distance detection device 3 controls the controller 5 to switch to the normal walking mode, and sends the operation instruction to the controller 5 through the enable button 41 and the handle rocker 42, and the controller 5 controls the walking device 2 to move at the normal speed;

[0048] When the distance detection device 3 detects an obstacle within the set deceleration interval L2, the distance detection device 3 controls the controller 5 to switch to the deceleration walking mode, and sends an operation instruction to the controller 5 through the enable button 41 and the handle rocker 42. The controller 5 controls the walking device 2 to walk at a snail's pace, and a warning sound is emitted during the process to remind the operator to pay attention;

[0049] When the distance detection device 3 detects an obstacle in the set deceleration interval and then drives to the parking interval L3 at a snail's pace, the distance detection device 3 controls the controller 5 to switch to the anti-squeezing parking mode. When the enable button 41 and the handle rocker 42 send an operation instruction to the controller 5, the controller 5 controls the walking device 2 to forcibly stop walking. During this process, a warning sound different from that in the deceleration walking mode is emitted to remind the operator to pay attention.

[0050] When the vehicle needs to be moved after entering the anti-squeeze parking mode, the forced travel unlock button 43 is continuously pressed and the enable button 41 and the handle rocker 42 are used to send an operation instruction to the controller 5. At this time, the controller 5 controls the travel device 2 to move at a snail's pace.

[0051] In summary, compared with the prior art, the scissor-type aerial work platform anti-extrusion system and control method thereof of the present invention have the following advantages and beneficial effects:

[0052] When the distance detection device detects an obstacle in the deceleration zone, the controller controls the traveling device to decelerate and when the obstacle is detected in the parking zone, the controller controls the traveling device to stop in time, thereby effectively avoiding collision with obstacles during vehicle startup or movement and improving driving safety.

[0053] It should be noted that, in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A scissor-type aerial work platform anti-extrusion system, characterized in that: The scissor-type aerial work platform anti-extrusion system comprises: chassis; A walking device, the walking device is arranged at the bottom of the chassis and is used to drive the working platform to move; A distance detection device, which is arranged on the traveling side of the chassis and is used to detect the distance of the obstacle ahead and send a stop signal; An operating handle, which is arranged on the working platform and is used to send control information to the controller; A controller is arranged on the base frame and is used for receiving control information of the distance detection device and the operating handle and controlling the movement of the walking device.

2. The anti-extrusion system of the scissor-type aerial work platform according to claim 1 is characterized in that: The distance detection device and the output end of the operating handle are connected to the input end of the controller, and the output end of the controller is connected to the walking device.

3. The anti-extrusion system of the scissor-type aerial work platform according to claim 1 is characterized in that: The distance detection devices form a group of two, and there is at least one group on the traveling side of the chassis. Every two distance detection devices are arranged in an eight-shaped tilted manner, and the tilt angle is adjusted according to the width of the chassis. The width of the effective detection area of ​​the distance detection device is smaller than the width of the chassis.

4. The anti-extrusion system for scissor-type aerial work platform according to claim 1, characterized in that: The operating handle comprises: A handle rocker, the handle rocker is used to control the walking and steering of the walking device; An enabling button, which is used to prevent accidental operation during walking and turning operations; A forced walking unlock button is used to release the parking signal sent by the distance detection device.

5. A method for controlling an anti-extrusion system of a scissor-type aerial work platform, characterized in that: The control method of the anti-extrusion system of the scissor-type aerial work platform includes: The distance detection device is used to set a deceleration interval and a parking interval according to the walking speed of the walking device, and the distance detection device is used to detect obstacles in front. When the distance detection device does not detect an obstacle in the set deceleration interval, the distance detection device controls the controller to switch to a normal walking mode, and sends an operation instruction to the controller through the enable button and the handle joystick, and the controller controls the walking device to move at a normal speed; When the distance detection device detects an obstacle within the set deceleration interval, the distance detection device controls the controller to switch to the deceleration walking mode, sends an operation instruction to the controller through the enable button and the handle joystick, and the controller controls the walking device to walk at a snail's pace; When the distance detection device detects an obstacle in the set deceleration interval and then drives to the parking interval at a snail's pace, the distance detection device controls the controller to switch to the anti-squeezing parking mode. When the enable button and the joystick send an operation instruction to the controller, the controller controls the walking device to forcibly stop walking. When entering the anti-squeeze parking mode, if you need to move the vehicle, continue to press the forced travel unlock button and cooperate with the enable button and handle joystick to send operation instructions to the controller. At this time, the controller controls the travel device to move at a snail's pace.

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