Aerial work platform and aerial work platform control method

Abstract

An aerial work platform and an aerial work platform control method. The aerial work platform comprises: a mounting support (1); a reset detection device (2), which is arranged on one side of the mounting support (1) and comprises a reset assembly (21) and a detection assembly (22); and a pull rope (3), which has a first end (31) fixedly connected to the side of the mounting support (1) away from the reset detection device (2), and a second end (32) leaving an initial position as the pull rope (3) is pressed by an operator in the aerial work platform; wherein the detection assembly (22) is configured to detect whether the second end (32) of the pull rope (3) moves, and the reset assembly (21) is configured to return the second end (32) of the pull rope (3) to the initial position in response to the operator in the aerial work platform releasing the pressure on the pull rope (3). The aerial work platform further comprises: action output valves (4) used for controlling the start and stop of a plurality of operational actions of the aerial work platform; and a processor (5) which is in signal connection with the reset detection device (2) and the action output valves (4), and is configured to, in response to a detection result of the detection assembly (22), close the plurality of action output valves (4) when the pull rope (3) is pressed, and restart the plurality of action output valves (4) when the pull rope (3) is reset.

Description

Aerial work platform and aerial work platform control method

[0001] Cross-reference to related applications

[0002] The present disclosure is based on and claims priority to Chinese Patent Application No. 202411248552.4, filed on September 6, 2024, the disclosure of which is hereby incorporated by reference in its entirety into the present application. TECHNICAL FIELD

[0003] The present disclosure relates to the field of engineering machinery, and in particular, to an aerial work platform and an aerial work platform control method. BACKGROUND

[0004] Traditional aerial work equipment such as scaffolding has been unable to meet the current demand for aerial work, and aerial work platforms have emerged as the times require. As a substitute for traditional aerial work equipment such as scaffolding, aerial work platforms have great advantages in safety, economy, convenience, and the like. Safety and controllability are crucial.

[0005] Most aerial work platforms in the related art are operated in open environments. The steel wire of some defense devices is attracted by magnetic blocks. Prolonged exposure to the sun can cause the magnetic blocks at both ends of the steel wire to demagnetize, and the magnetic properties gradually weaken in an irreversible manner. The attraction by the magnetic blocks is easily affected by birds, vibrations, and jolts, leading to accidental detachment. The stability is poor. After the danger is removed, the steel wire needs to be manually reset for the equipment to operate normally. The repeated and complex operations affect the normal operation of the workers and pose a safety hazard.

[0006] SUMMARY

[0007] In view of this, the embodiments of the present disclosure provide an aerial work platform and an aerial work platform control method, which help to improve the reliability of the aerial work platform.

[0008] In one aspect of the present disclosure, an aerial work platform is provided, comprising:

[0009] a mounting bracket;

[0010] a reset detection device disposed on one side of the mounting bracket, having a reset component and a detection component;

[0011] a pull rope spanning between both sides of the mounting bracket, a first end of the pull rope being fixedly connected to the side of the mounting bracket away from the reset detection device, a second end of the pull rope being connected to the reset component, the second end of the pull rope being configured to move away from an initial position due to the compression of the pull rope by an operator inside the aerial work platform;

[0012] The detection assembly is configured to detect whether the second end of the pull rope moves, and the reset assembly is configured to return the second end of the pull rope to the initial position in response to the operator in the aerial work platform releasing the pressing of the pull rope.

[0013] The aerial work platform further comprises:

[0014] The action output valve is configured to control the start and stop of a plurality of motor actions of the aerial work platform.

[0015] The processor is in signal connection with the reset detection device and the action output valve, and is configured to close the plurality of action output valves when the pull rope is pressed and restart the plurality of action output valves when the pull rope is reset in response to the detection result of the detection assembly.

[0016] In some embodiments, the reset assembly comprises:

[0017] The rotating disc is fixedly connected with the second end of the pull rope and is configured to rotate with the movement of the second end of the pull rope.

[0018] The detection assembly comprises:

[0019] The transmission member is in transmission connection with the rotating disc and is configured to rotate with the rotation of the rotating disc.

[0020] The detection switch is arranged adjacent to the transmission member and is configured to detect whether the transmission member rotates.

[0021] The processor is in signal connection with the transmission member and the detection switch, and is configured to close the plurality of action output valves when the transmission member rotates and restart the plurality of action output valves when the transmission member is reset in response to the detection result of the detection switch.

[0022] In some embodiments, the pull rope is configured to be at least partially wound on the rotating disc when the second end of the pull rope is in the initial position.

[0023] In some embodiments, the transmission member comprises:

[0024] The first meshing element is fixedly connected with the rotating disc and is configured to rotate with the rotating disc; and

[0025] The second meshing element is in meshing transmission with the first meshing element.

[0026] The detection switch is configured to detect the rotation of the second meshing element.

[0027] In some embodiments, the reset detection device comprises:

[0028] The mounting plate is arranged with the rotating disc.

[0029] The detection assembly comprises:

[0030] The internal mounting body is arranged along the axis of the rotating disc and is spaced apart from the mounting plate. The second engaging element and the detection switch are arranged on the internal mounting body.

[0031] The internal mounting body has a mounting hole. The first engaging element is connected in transmission with the second engaging element through the mounting hole.

[0032] In some embodiments, the number of the second engaging elements is two, and the two second engaging elements are arranged on the two sides of the first engaging element, respectively.

[0033] The number of the detection switches is two. The two detection switches detect the rotation of one of the two second engaging elements.

[0034] In some embodiments, the reset assembly further comprises:

[0035] The elastic member has one end connected with the rotating disc and the other end fixedly connected with the mounting plate or the detection assembly. The elastic member is configured to reset the second end of the pull rope in response to the operator in the aerial work platform releasing the pressing of the pull rope.

[0036] In some embodiments, the reset detection device further comprises:

[0037] The cover is arranged on the internal mounting body. The second engaging element and the detection switch are located in the space formed between the cover and the internal mounting body.

[0038] The shell is arranged on the mounting plate. The detection assembly and the reset assembly are located in the space formed between the mounting plate and the shell.

[0039] In some embodiments, the aerial work platform further comprises:

[0040] The main control device is signal-connected with the processor and is configured to output corresponding signals to the processor according to the instructions of the operator to control the opening and closing of the plurality of action output valves.

[0041] The processor is further configured to:

[0042] In response to the detection result of the detection assembly, the control of the plurality of action output valves by the main control device is disconnected when the pull rope is pressed.

[0043] When the operator in the aerial work platform releases the pressing of the pull rope, the control of the plurality of action output valves by the main control device is reconnected.

[0044] In some embodiments, the aerial work platform further comprises:

[0045] The buzzer is used to issue sound and light alarms.

[0046] The display is used to display the working state of the aerial work platform.

[0047] The processor is in signal connection with the buzzer and the display, and is configured to:

[0048] In response to the detection result of the detection component, the buzzer is caused to emit sound and light alarm when the pull rope is pressed, and the display is caused to display a dangerous state;

[0049] When the operator in the aerial work platform releases the pressing of the pull rope, the buzzer is caused to stop emitting sound and light alarm, and the display is caused to display a dangerous release state.

[0050] In one aspect of the embodiments of the present disclosure, an aerial work platform control method based on any of the above embodiments is provided, comprising:

[0051] The body posture of the operator in the aerial work platform is detected through the pull rope;

[0052] The detection component detects whether the second end of the pull rope moves with the pull rope being pressed;

[0053] The plurality of action output valves are closed when the pull rope is pressed, and the plurality of action output valves are restarted when the operator in the aerial work platform releases the pressing of the pull rope.

[0054] In some embodiments, the aerial work platform further comprises a main control device configured to control the opening and closing of the plurality of action output valves according to the instructions of the operator;

[0055] The aerial work platform control method further comprises:

[0056] When the pull rope is pressed, the control of the plurality of action output valves by the main control device is disconnected, and when the operator in the aerial work platform releases the pressing of the pull rope, the control of the plurality of action output valves by the main control device is reconnected.

[0057] In some embodiments, the aerial work platform further comprises a buzzer and a display, the buzzer is used to emit sound and light alarm, and the display is used to display the working state of the aerial work platform;

[0058] The aerial work platform control method further comprises:

[0059] In response to the detection result of the detection component, the buzzer is caused to emit sound and light alarm when the pull rope is pressed, and the display is caused to display a dangerous state, and the buzzer is caused to stop emitting sound and light alarm when the operator in the aerial work platform releases the pressing of the pull rope, and the display is caused to display a dangerous release state.

[0060] Therefore, according to the embodiments of the present disclosure, the reset detection device is arranged to obtain the safety condition of the operator by detecting the state of the pull rope, and to stop the movement of the aerial work platform when the operator is in an unsafe position, thereby reducing the further extrusion injury to the operator and ensuring the personal safety of the operator. When the operator is away from the dangerous position, the second end of the pull rope can be automatically reset to the initial position without manual reset, and the normal operation of the operator will not be affected by repeated and complicated operations, thereby improving the safety and reliability of the aerial work platform and providing a safer working environment for the operator of the aerial work platform. BRIEF DESCRIPTION OF DRAWINGS

[0061] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0062] FIG. 1 is a structural schematic diagram of an aerial work platform according to some embodiments of the present disclosure;

[0063] FIG. 2 is a partial schematic diagram of an aerial work platform according to some embodiments of the present disclosure;

[0064] FIG. 3 is a structural schematic diagram of a reset detection device and a pull rope of an aerial work platform according to some embodiments of the present disclosure;

[0065] FIG. 4 is a structural exploded view of a reset detection device and a pull rope of an aerial work platform according to some embodiments of the present disclosure;

[0066] FIG. 5 is a partial schematic diagram of a reset detection device according to some embodiments of the present disclosure;

[0067] FIG. 6 is a connection relationship diagram of an aerial work platform according to some embodiments of the present disclosure;

[0068] FIG. 7 is a partial schematic diagram of another reset detection device of an aerial work platform according to some embodiments of the present disclosure;

[0069] FIG. 8 is a structural schematic diagram of a reset assembly of a reset detection device of an aerial work platform according to some embodiments of the present disclosure;

[0070] FIG. 9 is a flowchart of a control method of an aerial work platform according to some embodiments of the present disclosure.

[0071] The respective reference signs represent:

[0072] 1, mounting bracket; 2, reset detection device; 21, reset assembly; 211, rotating disc; 212, elastic member; 22, detection assembly; 221, transmission member; 221a, first meshing element; 221b, second meshing element; 222, detection switch; 223, internal mounting body; 223a, mounting hole; 23, mounting plate; 24, cover body; 25, housing; 3, pull rope; 31, first end of pull rope; 32, second end of pull rope; 4, action output valve; 5, processor; 6, main control device; 7, buzzer; 8, display; 9, PG terminal. DETAILED DESCRIPTION

[0073] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses, except as described by the appended claims. The disclosure can be implemented in numerous different forms, as will be apparent to one of ordinary skill in the art. The embodiments provided are by way of example only, and nothing therein should be taken as a limitation upon the overall scope of the disclosure. It should be noted that the relative arrangement of components and steps illustrated in these embodiments, the components of the materials, numerical expressions, and numerical values set forth herein are merely exemplary in nature, unless specifically stated otherwise.

[0074] The terms "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are used to distinguish different parts. The terms "comprise", "include" or "contain" and similar terms mean that the elements before the term encompass the elements listed after the term, and do not exclude the possibility of also encompassing other elements. "Up", "down", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship can also change accordingly.

[0075] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there can be an intervening device between the specific device and the first device or the second device, or there can be no intervening device. When it is described that a specific device is connected to other devices, the specific device can be directly connected to the other devices without an intervening device, or can not be directly connected to the other devices with an intervening device.

[0076] All terms used in the present disclosure, including technical or scientific terms, have the same meaning as understood by a person of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary should be interpreted in a manner consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or excessively formalized sense, unless otherwise explicitly defined herein.

[0077] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art(s) can not be discussed in detail herein, but should be considered as part of the specification.

[0078] Traditional aerial work equipment such as scaffolding cannot meet the current demand for aerial work, and aerial work platforms have emerged as the times require. As a substitute for traditional aerial work equipment such as scaffolding, aerial work platforms have great advantages in safety, economy, convenience, and the like. Safety and controllability are crucial.

[0079] In the related art, the steel wire rope of some defense devices is attracted by a magnetic block, and the steel wire rope on the active defense device support is used to detect in real time whether the operator is in a safe operating position. Once the operator is pressed on the back due to operation failure or accidental situation, the body will be inclined to knock off the attracted steel wire rope, the proximity switch signal of the detection steel wire rope is disconnected, and the control system will determine that the operator is injured, and the device is controlled urgently.

[0080] Most aerial work platforms operate in open environments, and long-term exposure to the sun can also cause the magnetic blocks at both ends of the steel wire rope to demagnetize, with a irreversible trend of gradually weakening magnetic properties. Moreover, the attraction by the magnetic block is easily affected by birds, vibration, and jolt, leading to accidental falling off, poor stability, and the need for manual resetting of the steel wire rope after the danger is removed, so that the device can operate normally. Repeated and complicated operations affect the normal operation of the workers, and there is a safety hazard.

[0081] Therefore, in one aspect of the embodiments of the present disclosure, an aerial work platform is provided to help improve reliability.

[0082] FIG. 1 is a structural schematic diagram of an aerial work platform according to some embodiments of the present disclosure, FIG. 2 is a partial schematic diagram of an aerial work platform according to some embodiments of the present disclosure, FIG. 3 is a structural schematic diagram of a reset detection device and a pull rope of an aerial work platform according to some embodiments of the present disclosure, FIG. 4 is a structural exploded view of a reset detection device and a pull rope of an aerial work platform according to some embodiments of the present disclosure, FIG. 5 is a partial schematic diagram of a reset detection device of an aerial work platform according to some embodiments of the present disclosure, and FIG. 6 is a connection relationship diagram of an aerial work platform according to some embodiments of the present disclosure. Referring to FIGS. 1-6, the aerial work platform includes a mounting bracket 1, a reset detection device 2, and a pull rope 3. The aerial work platform includes but is not limited to a straight and curved arm type aerial work platform. The mounting bracket 1 is arranged above an operating panel of the aerial work platform, and is used to mount the pull rope 3 and the reset detection device 2, and the like.

[0083] The pull rope 3 is arranged on both sides of the mounting bracket 1, the first end 31 of the pull rope is fixedly connected to the side of the mounting bracket 1 away from the reset detection device 2, and the second end 32 of the pull rope is connected to the reset assembly 21. The second end 32 of the pull rope is configured to move away from the initial position in response to the pull rope 3 being pressed by an operator inside the aerial work platform. The pull rope 3 includes, but is not limited to, a steel wire rope.

[0084] When the operator is not in contact with the pull rope 3, the second end 32 of the pull rope is in the initial position, and the first end 31 and the second end 32 of the pull rope are in a straight state. Once the operator is pressed on the back due to an operation error or an accident, the body tilt will press the pull rope 3, and the second end 32 of the pull rope moves in the reset assembly 21 in response to the pressing of the operator, thereby moving away from the initial position.

[0085] The reset detection device 2 is arranged on one side of the mounting bracket 1, including but not limited to being arranged near the inside of the mounting bracket 1, and has a reset assembly 21 and a detection assembly 22. The reset assembly 21 is configured to return the second end 32 of the pull rope to the initial position in response to the operator inside the aerial work platform releasing the pressing of the pull rope 3. When the operator is separated from the pull rope 3, the pull rope 3 is not under pressure, and at this time the reset assembly 21 can drive the second end 32 of the pull rope to return to the initial position, so that the part of the pull rope 3 across between the two sides of the mounting bracket 1 recovers to a straight state.

[0086] The aerial work platform further comprises an action output valve 4 and a processor 5. The action output valve 4 is used to control the start and stop of multiple motor actions of the aerial work platform. The processor 5 is signal connected with the reset detection device 2 and the action output valve 4, and is configured to close the multiple action output valves 4 when the pull rope 3 is pressed, and restart the multiple action output valves 4 when the pull rope 3 is reset, in response to the detection result of the detection assembly 22.

[0087] The detection assembly 22 is configured to detect whether the second end 32 of the pull rope moves. The detection assembly 22 can detect whether the second end 32 of the pull rope moves and moves away from the initial position. When it is detected that the second end 32 of the pull rope moves away from the initial position, it is determined that the operator presses the pull rope 3, and the operator is at risk. At this time, the processor 5 closes the multiple action output valves 4 to achieve emergency braking of the equipment and protect the operator from continuous injury. When it is detected that the second end 32 of the pull rope returns to the initial position, it is determined that the operator leaves the pull rope 3, and the aerial work platform can recover to normal working conditions. At this time, the processor 5 restarts the multiple action output valves 4.

[0088] The detection assembly 22 detects the operation state of the aerial work platform operator in real time, ensures that the processor 5 triggers the emergency brake operation when the operator loses the safe operation space due to being squeezed from behind during operation, so as to stop the aerial work platform from operating and the vehicle connected with the aerial work platform from stopping, thereby avoiding further squeezing injury to the operator and ensuring personal safety.

[0089] In some embodiments of the present application, the reset detection device 2 detects the safety of the operator by detecting the state of the pull rope 3, and triggers the emergency brake of the aerial work platform when the operator is in an unsafe position, thereby reducing further squeezing injury to the operator and ensuring the personal safety of the operator. When the operator is out of the dangerous position, the second end 32 of the pull rope can be automatically reset to the initial position without manual reset, which will not affect the normal operation of the operator due to repeated and complex operations, and can improve the safety and reliability of the aerial work platform and provide a safer working environment for the operator of the aerial work platform.

[0090] FIG. 7 is a partial schematic view of another embodiment of the reset detection device of the aerial work platform according to the present application, and FIG. 8 is a structural schematic view of some embodiments of the reset assembly of the reset detection device of the aerial work platform according to the present application. Referring to FIGS. 1-5, 7 and 8, in some embodiments, the reset assembly 21 includes a rotating disc 211 fixedly connected with the second end 32 of the pull rope and configured to rotate with the movement of the second end 32 of the pull rope.

[0091] The detection assembly 22 includes a transmission member 221 and a detection switch 222. The transmission member 221 is in transmission connection with the rotating disc 211 and is configured to rotate with the rotation of the rotating disc 211. The detection switch 222 is arranged adjacent to the transmission member 221 and is configured to detect whether the transmission member 221 rotates.

[0092] The detection switch 222 includes but is not limited to a micro switch, which can produce more sensitive response and detection to the movement of the pull rope 3. When the pull rope 3 is squeezed, the detection switch 222 is in an open state, and when the pull rope 3 is reset, the detection switch 222 is in a closed state. The detection switch 222 includes but is not limited to switching to the open state when the second end 32 of the pull rope is stretched outward by 5 mm.

[0093] The processor 5 is in signal connection with the transmission member 221 and the detection switch 222, and is configured to close the plurality of action output valves 4 when the transmission member 221 rotates in response to the detection result of the detection switch 222, and restart the plurality of action output valves 4 when the transmission member 221 is reset.

[0094] In some embodiments, the rotating disc 211 and the transmission member 221 are configured to transmit the movement of the second end 32 of the pull rope to the detection switch 222 for detection. Compared with the magnetic attraction detection of the steel wire rope in the related art, the magnetic attraction detection is easy to demagnetize, the transmission of the pull rope 3, the rotating disc 211 and the transmission member 221 is more reliable, and the transmission function is not easily lost due to the open-air environment and the scorching sun, thereby having better detection stability and reducing the safety hazard of the staff.

[0095] Referring to FIGS. 3 and 4, in some embodiments, the pull rope 3 is configured to be at least partially wound in the rotating disc 211 when the second end 32 of the pull rope is in the initial position. When the second end 32 of the pull rope is in the initial position, the side of the pull rope 3 close to the second end 32 of the pull rope is at least partially wound in the rotating disc 211. When the pull rope 3 is squeezed by the operator, the part of the pull rope 3 wound in the rotating disc 211 is released to the outside of the reset detection device 2 with the squeezing, and the second end 32 of the pull rope moves away from the initial position.

[0096] In some embodiments, by at least partially winding the pull rope 3 in the rotating disc 211, the pull rope 3 has a certain activity allowance when it is squeezed by the operator, which provides a buffer area for the operator to prevent squeezing. The pull rope 3 will not be excessively pulled or stressed, which helps to improve the service life of the pull rope 3, reduce the risk of breakage of the pull rope 3, and facilitate the detection switch 222 to obtain the displacement of the second end 32 of the pull rope.

[0097] Referring to FIGS. 1-5 and 7-8, in some embodiments, the transmission member 221 includes a first engaging element 221a and a second engaging element 221b, which include but are not limited to gears or cams.

[0098] The first engaging element 221a is fixedly connected with the rotating disc 211 and is configured to rotate with the rotating disc 211. The rotating disc 211 includes but is not limited to a protrusion and a rotating shaft arranged in the direction close to the center, and the first engaging element 221a is sleeved on the protrusion.

[0099] The second engaging element 221b is engaged with the first engaging element 221a for transmission, and the second engaging element 221b is arranged in the axial direction of the rotating disc 211 to separate from the rotating disc 211, so that there is more installation space inside the reset assembly 21.

[0100] The detection switch 222 is arranged close to the second engaging element 221b and is configured to detect the rotation of the second engaging element 221b. When the second end 32 of the pull rope 3 is moved by being squeezed, the rotating disc 211 is rotated, the first engaging element 221a is rotated with the rotating disc 211, the second engaging element 221b is also rotated with the first engaging element 221a, and the detection switch 222 is opened.

[0101] The second engaging element 221b can be provided with an inductive part or a protruding part. When the second engaging element 221b rotates to the inductive part or the protruding part close to the detection switch 222, the detection switch 222 detects the rotation of the second engaging element 221b and switches to the open state, so that the processor 5 receives the relevant signal.

[0102] The second engaging element 221b can also be provided with a groove, and the triggering element of the detection switch 222 is clamped in the groove. When the second engaging element 221b rotates, the detection switch 222 is triggered to open.

[0103] In some embodiments, the squeezed state and position change of the pull rope 3 are converted into the rotation state of the second engaging element 221b by mechanical transmission, which facilitates the spatial layout in the reset detection device 2, prevents the pull rope 3 from interfering with other components to affect the safety of the operator, and helps the detection switch 222 to detect more sensitively, so as to improve the accuracy of detection.

[0104] Referring to FIGS. 1-5 and 7-8, in some embodiments, the reset detection device 2 includes a mounting plate 23, and the rotating disc 211 is arranged on the mounting plate 23, which can be arranged against the mounting support 1.

[0105] The detection assembly 22 includes an internal mounting body 223 arranged along the axis of the rotating disc 211 and spaced apart from the mounting plate 23, and the second engaging element 221b and the detection switch 222 are arranged on the internal mounting body 223. The internal mounting body 223 has a mounting hole 223a, and the first engaging element 221a passes through the mounting hole 223a and is in transmission connection with the second engaging element 221b.

[0106] In some embodiments, the internal mounting body 223 includes but is not limited to a cavity or a box body, and has a certain accommodation space to provide a more reliable and high-strength working environment for the detection switch 222 and the second engaging element 221b.

[0107] Referring to FIGS. 1-5 and 7-8, in some embodiments, the number of second engaging elements 221b is two, which are arranged on both sides of the first engaging element 221a. The number of detection switches 222 is two, and the two detection switches 222 respectively detect the rotation of one of the two second engaging elements 221b.

[0108] In some embodiments, the two detection switches 222 respectively detect the rotation of one of the two second engaging elements 221b, thereby realizing double-redundancy detection and avoiding missed detection or false detection, and responding more timely and safely and reliably.

[0109] Referring to FIGS. 1-5 and 7-8, in some embodiments,

[0110] The reset assembly 21 further comprises an elastic member 212, one end of the elastic member 212 is connected with the rotating disc 211, the other end of the elastic member 212 is fixedly connected with the installation plate 23 or the detection assembly 22, and the elastic member 212 is configured to reset the second end 32 of the pull rope 3 in response to the operator in the aerial work platform releasing the extrusion on the pull rope 3.

[0111] The elastic member 212 includes but is not limited to a coil spring or a long spring wound on the rotating disc 211, and the coil spring can continuously provide a large restoring force in a small space, so as to reset the pull rope 3.

[0112] When the pull rope 3 is extruded, the second end 32 of the pull rope 3 moves, the pull rope 3 releases the stored part of the pull rope 3 to the outside of the reset detection device 2, the elastic member 212 is in a tensioned force storage state with the movement of the second end 32 of the pull rope 3, and the elastic force provided by the elastic member 212 counteracts the extrusion force borne by the pull rope 3, so that the second end 32 of the pull rope 3 cannot cause further harm to the operator due to the disengagement from the reset detection device 2.

[0113] When the operator releases the extrusion on the pull rope 3, the elastic member 212 drives the rotating disc 211 to reverse under the action of the elastic force of the elastic member 212, and the pull rope 3 is recovered to the outside, and the pull rope 3 is reset, and the second end 32 of the pull rope 3 is driven to return to the initial position, so that the manual reset operation is omitted.

[0114] In some embodiments, the elastic member 212 can automatically reset the second end 32 of the pull rope 3 after the operator is released from the dangerous state, without the need for the operator to repeatedly collect and manually operate the pull rope 3, so that the work safety and convenience are further improved.

[0115] Referring to FIGS. 1-5 and 7-8, in some embodiments, the reset detection device 2 further comprises a cover 24 and a shell 25. The cover 24 covers the internal mounting body 223, and the second engaging element 221b and the detection switch 222 are located in the space formed between the cover 24 and the internal mounting body 223. One side of the internal mounting body 223 can be provided with a PG connector for arranging wires and transmitting signals.

[0116] The shell 25 covers the installation plate 23, and the detection assembly 22 and the reset assembly 21 are located in the space formed between the installation plate 23 and the shell 25. The shell 25 and the cover 24 include but are not limited to metal materials, so as to improve the structural strength and durability.

[0117] In some embodiments, the detection assembly 22 and the reset assembly 21 are arranged in a closed space by arranging the cover 24, the shell 25, the inner mounting body 223 and the mounting plate 23, so that rain and dust cannot penetrate, the detection assembly 22 and the reset assembly 21 are protected from corrosion or influence of the working environment, the durability is better, the service life of the reset detection device 2 is improved, and the safety of the aerial work platform is improved.

[0118] Referring to FIG. 6, in some embodiments, the aerial work platform further comprises a main control device 6, which is in signal connection with the processor 5 and is configured to output corresponding signals to the processor 5 according to the instructions of the operator, so as to control the opening and closing of the plurality of action output valves 4.

[0119] The processor 5 is further configured to, in response to the detection result of the detection assembly 22, disconnect the control of the main control device 6 on the plurality of action output valves 4 when the pull rope 3 is pressed, and reconnect the control of the main control device 6 on the plurality of action output valves 4 when the operator in the aerial work platform releases the pressing of the pull rope 3.

[0120] In some embodiments, the control port signal output of the main control device 6 can also be cut off when the operator presses the pull rope 3, so as to prevent the action control valve from being stuck and avoid accidents caused by the failure of the aerial work platform to stop suddenly.

[0121] Referring to FIG. 6, in some embodiments, the aerial work platform further comprises a buzzer 7 and a display 8. The buzzer 7 is used to issue sound and light alarms, and the display 8 is used to display the working state of the aerial work platform, which includes but is not limited to normal operation state, emergency braking state, etc.

[0122] The processor 5 is in signal connection with the buzzer 7 and the display 8, and is configured to, in response to the detection result of the detection assembly 22, make the buzzer 7 issue sound and light alarms and make the display 8 display a dangerous state when the pull rope 3 is pressed, and make the buzzer 7 stop issuing sound and light alarms and make the display 8 display a dangerous release state when the operator in the aerial work platform releases the pressing of the pull rope 3.

[0123] The processor 5 comprises a DI port. When the detection switch 222 detects that the pull rope 3 is pressed and extended, the DI port signal of the processor 5 is triggered to be lost, and it is determined that a dangerous situation occurs. The processor 5 disconnects the DO / PWM port of each action output valve 4, cuts off the output current, and makes all actions of the aerial work platform stop immediately.

[0124] The processor 5 also energizes the DO port of the buzzer 7, changing from low level to high level, and the buzzer 7 emits an audible and light alarm to output a help signal. The processor 5 also sends an alarm message to the display 8 through the CAN bus, and the display 8 displays that the aerial work platform is in an emergency braking state, prompting the ground operator to be aware of the fault and danger.

[0125] After the operator is out of danger, the body is separated from the pull rope 3, the squeezing of the pull rope 3 is released, the second end 32 of the pull rope returns to the initial position under the action of the elastic member 212, the detection result of the detection switch 222 is normal, the line connected with the processor 5 port is conducted, and it is determined that the danger state disappears. The signal of the main control device 6 is restored, and the main power system can be normally started. The DO port of the buzzer 7 is de-energized, changing from high level to low level, and the audible and light alarm disappears, and the display 8 cancels the alarm message.

[0126] In some embodiments of the present embodiment, by setting the buzzer 7 and the display 8, the ground operator can timely obtain the working condition of the aerial work platform, so as to timely take corresponding safety measures when the operator in the aerial work platform is in danger.

[0127] FIG. 9 is a flowchart of the aerial work platform control method according to some embodiments of the present disclosure, and with reference to FIGS. 1-9, in another aspect of the present embodiment, an aerial work platform control method based on any of the above embodiments is provided, including steps S1-S3.

[0128] In step S1, the body posture of the operator located in the aerial work platform is detected by the pull rope 3, and the operator squeezes the pull rope 3 when in a dangerous situation, and does not contact the pull rope 3 when not in a dangerous situation.

[0129] In step S2, the detection assembly 22 detects whether the second end 32 of the pull rope moves with the pull rope 3 being squeezed, and the displacement state of the second end 32 of the pull rope is obtained by the detection assembly 22, so as to determine whether the operator is in a dangerous abnormal state.

[0130] In step S3, when the pull rope 3 is squeezed, the plurality of action output valves 4 are closed to make the aerial work platform emergency brake, and when the operator in the aerial work platform releases the squeezing of the pull rope 3, the plurality of action output valves 4 are restarted to make the aerial work platform return to normal work.

[0131] In some embodiments, the reset detection device 2 detects the safety of the operator by detecting the state of the pull rope 3, and stops the movement of the aerial work platform when the operator is in an unsafe position, so as to reduce the further squeezing injury to the operator and ensure the safety of the operator. When the operator is out of danger, the second end 32 of the pull rope can be automatically reset to the initial position without manual reset, so as to improve the safety and reliability of the aerial work platform.

[0132] In some embodiments, the aerial work platform further comprises a main control device 6 configured to control the opening and closing of the plurality of action output valves 4 according to the instructions of the operator. The aerial work platform control method further comprises: when the pull rope 3 is squeezed, disconnecting the control of the main control device 6 to the plurality of action output valves 4, and when the operator in the aerial work platform releases the squeezing of the pull rope 3, reconnecting the control of the main control device 6 to the plurality of action output valves 4.

[0133] In some embodiments, the control port signal output of the main control device 6 can be cut off when the operator presses the pull rope 3, so as to prevent the action control valve from being stuck and avoid accidents caused by the failure of the aerial work platform to stop moving.

[0134] In some embodiments, the aerial work platform further comprises a buzzer 7 and a display 8, the buzzer 7 is used to issue sound and light alarm, and the display 8 is used to display the working state of the aerial work platform. The aerial work platform control method further comprises: in response to the detection result of the detection assembly 22, when the pull rope 3 is squeezed, the buzzer 7 issues sound and light alarm, and the display 8 displays a dangerous state, and when the operator in the aerial work platform releases the squeezing of the pull rope 3, the buzzer 7 stops issuing sound and light alarm, and the display 8 displays a danger release state.

[0135] In some embodiments, the buzzer 7 and the display 8 are provided, so that the operator on the ground can timely obtain the working state of the aerial work platform, so as to take corresponding safety measures in time when the operator in the aerial work platform is in danger, and provide more comprehensive and safe protection for the operator and the equipment.

[0136] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0137] Although some specific embodiments of the present disclosure have been described in detail by way of example with reference to the drawings, it is to be understood that the above examples are intended to be illustrative only and are not intended to limit the scope of the present disclosure. It is to be appreciated that variations and modifications to the above embodiments can be made without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. An aerial work platform, comprising: a mounting bracket (1); a reset detection device (2) disposed on one side of the mounting bracket (1) and having a reset component (21) and a detection component (22); a pull rope (3) spanning across two sides of the mounting bracket (1), a first end (31) of the pull rope being fixedly connected to a side of the mounting bracket (1) away from the reset detection device (2), and a second end (32) of the pull rope being connected to the reset component (21), the second end (32) of the pull rope being configured to move away from an initial position in response to the pull rope (3) being pressed by an operator inside the aerial work platform; wherein the detection component (22) is configured to detect whether the second end (32) of the pull rope moves, and the reset component (21) is configured to return the second end (32) of the pull rope to the initial position in response to the operator inside the aerial work platform releasing the pressing on the pull rope (3); the aerial work platform further comprising: an action output valve (4) for controlling the start and stop of a plurality of motorized actions of the aerial work platform; a processor (5) in signal connection with the reset detection device (2) and the action output valve (4) and configured to, in response to a detection result of the detection component (22), close the plurality of action output valves (4) when the pull rope (3) is pressed and restart the plurality of action output valves (4) when the pull rope (3) is reset.

2. The aerial work platform of claim 1, wherein the reset component (21) comprises: a rotating disc (211) fixedly connected to the second end (32) of the pull rope and configured to rotate in response to the movement of the second end (32) of the pull rope; wherein the detection component (22) comprises: a transmission member (221) in transmission connection with the rotating disc (211) and configured to rotate in response to the rotation of the rotating disc (211); a detection switch (222) disposed adjacent to the transmission member (221) and configured to detect whether the transmission member (221) rotates; wherein the processor (5) is in signal connection with both the transmission member (221) and the detection switch (222) and configured to, in response to a detection result of the detection switch (222), close the plurality of action output valves (4) when the transmission member (221) rotates and restart the plurality of action output valves (4) when the transmission member (221) is reset.

3. The aerial work platform of claim 2, wherein the pull rope (3) is configured to be at least partially wound on the rotating disc (211) when the second end (32) of the pull rope is in the initial position.

4. The aerial work platform of claim 2 or 3, wherein the transmission member (221) comprises: a first meshing element (221a) fixedly connected to the rotating disc (211) and configured to rotate in response to the rotation of the rotating disc (211); and a second meshing element (221b) in meshing transmission with the first meshing element (221a); wherein the detection switch (222) is configured to detect the rotation of the second meshing element (221b). ​ 5. The aerial work platform of claim 4, wherein the reset detection device (2) comprises: a mounting plate (23), the rotating disc (211) being arranged on the mounting plate (23); the detection assembly (22) comprises: an inner mounting body (223) arranged along an axis of the rotating disc (211) and spaced apart from the mounting plate (23), the second engaging element (221b) and the detection switch (222) being arranged on the inner mounting body (223); wherein the inner mounting body (223) has a mounting hole (223a), and the first engaging element (221a) is in transmission connection with the second engaging element (221b) through the mounting hole (223a).

6. The aerial work platform of claim 4 or 5, wherein the number of the second engaging elements (221b) is two, and each of the two second engaging elements (221b) is arranged on a side of the first engaging element (221a); wherein, the number of the detection switches (222) is two, and each of the two detection switches (222) detects the rotation of one of the two second engaging elements (221b).

7. The aerial work platform of any one of claims 2-6, wherein the reset detection device (2) further comprises: a mounting plate (23), the rotating disc (211) being arranged on the mounting plate (23); wherein the reset assembly (21) further comprises: a resilient member (212), one end of the resilient member (212) being connected with the rotating disc (211), and the other end of the resilient member (212) being fixedly connected with the mounting plate (23) or the detection assembly (22), the resilient member (212) being configured to be pulled to reset the second end (32) of the pull rope (3) in response to the operator in the aerial work platform releasing the pressing of the pull rope (3).

8. The aerial work platform of any one of claims 5-7, wherein the reset detection device (2) further comprises: a cover body (24) covering the inner mounting body (223), the second engaging element (221b) and the detection switch (222) being located in a space formed between the cover body (24) and the inner mounting body (223); a shell (25) covering the mounting plate (23), the detection assembly (22) and the reset assembly (21) being located in a space formed between the mounting plate (23) and the shell (25).

9. The aerial work platform of any one of claims 1-8, further comprising: a main control device (6) in signal connection with the processor (5) and configured to output corresponding signals to the processor (5) according to the instructions of the operator, so as to control the opening and closing of the plurality of action output valves (4); wherein the processor (5) is further configured to: in response to the detection result of the detection assembly (22), disconnect the control of the plurality of action output valves (4) by the main control device (6) when the pull rope (3) is pressed. When the operator inside the aerial work platform releases the pressing of the pull rope (3), the main control device (6) reconnects the control of the plurality of action output valves (4).

10. The aerial work platform according to any one of claims 1-9, further comprising: a buzzer (7) for emitting audible and light alarm; a display (8) for displaying the working state of the aerial work platform; wherein the processor (5) is in signal connection with the buzzer (7) and the display (8) and is configured to: in response to the detection result of the detection assembly (22), make the buzzer (7) emit audible and light alarm when the pull rope (3) is pressed, and make the display (8) display the dangerous state; when the operator inside the aerial work platform releases the pressing of the pull rope (3), make the buzzer (7) stop emitting audible and light alarm, and make the display (8) display the dangerous release state.

11. An aerial work platform control method based on the aerial work platform according to any one of claims 1-10, comprising: detecting the body posture of the operator inside the aerial work platform through the pull rope (3); detecting whether the second end (32) of the pull rope moves with the pressing of the pull rope (3) through the detection assembly (22); turning off the plurality of action output valves (4) when the pull rope (3) is pressed, and restarting the plurality of action output valves (4) when the operator inside the aerial work platform releases the pressing of the pull rope (3).

12. The aerial work platform control method according to claim 11, wherein the aerial work platform further comprises a main control device (6) configured to control the opening and closing of the plurality of action output valves (4) according to the instructions of the operator; wherein, the aerial work platform control method further comprises: disconnecting the control of the plurality of action output valves (4) by the main control device (6) when the pull rope (3) is pressed, and reconnecting the control of the plurality of action output valves (4) by the main control device (6) when the operator inside the aerial work platform releases the pressing of the pull rope (3).

13. The aerial work platform control method according to claim 11 or 12, wherein the aerial work platform further comprises a buzzer (7) for emitting audible and light alarm and a display (8) for displaying the working state of the aerial work platform; wherein, the aerial work platform control method further comprises: in response to the detection result of the detection assembly (22), making the buzzer (7) emit audible and light alarm when the pull rope (3) is pressed, and making the display (8) display the dangerous state, and making the buzzer (7) stop emitting audible and light alarm when the operator inside the aerial work platform releases the pressing of the pull rope (3), and making the display (8) display the dangerous release state.

Images