CN114408820A - Aerial work platform - Google Patents
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- CN114408820A CN114408820A CN202210050421.XA CN202210050421A CN114408820A CN 114408820 A CN114408820 A CN 114408820A CN 202210050421 A CN202210050421 A CN 202210050421A CN 114408820 A CN114408820 A CN 114408820A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/042—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations actuated by lazy-tongs mechanisms or articulated levers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
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Abstract
The invention belongs to the field of engineering machinery, and discloses an aerial work platform, which comprises: a work platform (1); the lifting mechanism (2) supports the working platform (1); and a chassis assembly including a chassis main body (3) and a leveling mechanism, the leveling mechanism including: a hinged support member (4) hinged to the chassis body (3) and supporting the lifting mechanism (2); the inclined plane matching structure comprises an upper matching piece (5) and a lower matching piece (6) which are mutually in inclined plane matching, and the upper matching piece (5) and the lower matching piece (6) are respectively arranged on the hinged support piece (4) and the chassis main body (3); and the sliding driving device (7) can drive the upper fitting piece (5) and the lower fitting piece (6) to relatively slide along the fitting inclined plane so as to adjust the working platform (1) to be in a horizontal state. Therefore, the working platform can be adjusted to be in a horizontal state all the time, equipment can be operated stably all the time under different road conditions, and meanwhile, the risk of safety accidents is reduced.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to an aerial work platform.
Background
The safety of operating personnel can directly be influenced to aerial work platform's work platform stability, and at the actual operation in-process, often can meet road conditions such as the relief is uneven, the ground is soft or the slope, and when aerial work platform along with the relief slope, its work platform also can incline thereupon to be difficult to guarantee that equipment works safely steadily, can appear even when serious and overturn and lead to the emergence of incident. Due to the fact that the range of the workable gradient of the existing aerial work platform is small and generally cannot exceed 3 degrees, otherwise, the equipment can automatically alarm and cannot lift the platform for work. Therefore, the existing aerial work platform has great limitation when working in an inclined state, and has the problem of insufficient safety.
Disclosure of Invention
Aiming at the defects or shortcomings of the prior art, the invention provides an aerial work platform which can be adjusted to be in a horizontal state in an inclined state so as to enlarge the range of the working gradient of equipment, so that the equipment can stably work under different road conditions, and the personal safety of operators is ensured.
To achieve the above object, the present invention provides an aerial work platform, comprising:
a working platform;
a lifting mechanism supporting the work platform; and
the chassis assembly, including chassis main part and levelling mechanism, levelling mechanism includes:
a hinged support member hinged to the chassis main body and supporting the lifting mechanism;
the inclined surface matching structure comprises an upper matching piece and a lower matching piece which are mutually matched in an inclined surface manner, and the upper matching piece and the lower matching piece are respectively arranged on the hinged support piece and the chassis main body;
and the sliding driving device can drive the upper matching piece and the lower matching piece to relatively slide along the matching inclined plane so as to adjust the working platform to be in a horizontal state.
Optionally, the included angle between the cooperation inclined plane of going up the fitting piece and the horizontal plane and the included angle between the cooperation inclined plane of fitting piece and the horizontal plane down are theta, the cooperation inclined plane of going up the fitting piece with the coefficient of static friction between the cooperation inclined plane of fitting piece down is mu, satisfies: mu > tan theta.
Optionally, the slide drive is configured to self-lock when out of service to maintain the current relative position of the upper and lower mating members unchanged.
Optionally, the upper mating piece is fixedly connected to the hinge support, the lower mating piece is slidably disposed on the chassis main body, and the sliding driving device can drive the lower mating piece to slide.
Optionally, the leveling mechanism includes a fitting piece slide rail disposed on the chassis main body, the fitting piece slide rail is formed with a fitting piece slide groove, and the sliding driving device can drive the lower fitting piece to slide in the fitting piece slide groove.
Optionally, the groove bottom wall and the groove side wall of the fitting piece sliding groove are both provided with a smooth structure.
Optionally, the leveling mechanism includes a limit switch arranged in a sliding direction of the lower fitting piece, and the sliding driving device can stop when the lower fitting piece slides to a position for triggering the limit switch.
Optionally, the hinge support is arranged along a linear extending direction, two ends of the hinge support are respectively formed into a support hinge end hinged to the chassis main body and a support swing end capable of swinging up and down around the support hinge end, and the upper fitting piece is arranged close to the support swing end.
Optionally, articulated support piece is formed with the edge the support piece slide rail section that sharp extending direction set up, lifting mechanism is for cutting fork lifting mechanism and including along vertical articulated a plurality of scissors fork arm group in proper order, is located the below cut fork arm group and include intercrossing articulated first connecting arm and second connecting arm, the bottom of first connecting arm articulate in chassis main part, the bottom of second connecting arm be connected with support piece slide rail section sliding fit's connecting arm slider.
Optionally, a chassis groove is formed at the top of the chassis body, the lower fitting is disposed in the chassis groove, and the hinge support is swingable up and down above the chassis groove about a hinge end of the support.
Optionally, the lifting mechanism and the slip drive are arranged in an interlocking manner.
Optionally, the aerial work platform further comprises:
the chassis inclination angle sensor is used for detecting the inclination angle of the chassis main body relative to the horizontal plane and outputting a corresponding chassis inclination angle signal;
the platform inclination angle sensor is used for detecting the inclination angle of the working platform relative to the horizontal plane and outputting a corresponding platform inclination angle signal; and
a controller in communication with the chassis tilt sensor, the platform tilt sensor, and the skid drive, respectively, and configured to:
determining that the chassis main body inclines relative to the horizontal plane according to the chassis inclination angle signal, and controlling the sliding driving device to act;
and determining that the working platform is in a horizontal state according to the platform inclination angle signal, and controlling the sliding driving device to stop acting.
Through the technical scheme, when the aerial work platform disclosed by the invention needs to work under an inclined road condition, the sliding driving device can be controlled to drive the upper matching piece and the lower matching piece to relatively slide along the matching inclined plane, and in the relative sliding process of the two matching pieces, the included angle of the hinged support piece supported by the upper matching piece relative to the horizontal plane is changed, so that the included angle of the work platform indirectly supported by the hinged support piece relative to the horizontal plane is synchronously changed, and the work platform can be adjusted to be in a horizontal state under the condition of reasonably controlling the displacement of the sliding driving device. Therefore, the aerial work platform can work on the ground with larger gradient, and meanwhile, the working platform in the horizontal state can improve the overall stability of the equipment, so that the risk of safety accidents is effectively reduced.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic illustration of an aerial work platform according to an embodiment of the present invention;
FIG. 2 is a force analysis diagram of the aerial work platform of FIG. 1 when walking on a slope;
FIG. 3 is a partial schematic view of an aerial work platform according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view A-A of the aerial work platform of FIG. 3;
FIG. 5 is an overall force analysis of the upper and lower mating members of FIG. 3;
FIG. 6 is a force analysis diagram of the upper fitting member of FIG. 5;
FIG. 7 is a force analysis of the lower fitting of FIG. 5;
fig. 8 is a schematic structural diagram of an aerial work platform according to an embodiment of the present invention.
Description of reference numerals:
100 aerial work platform
1 working platform 2 lifting mechanism
3 Chassis body 4 articulated support
5 upper fitting part 6 lower fitting part
7 sliding driving device 8 matching piece sliding rail
9 side slide 10 bottom slide
11 chassis tilt sensor 12 platform tilt sensor
13 control device 14 controller
15 driver 16 steering electric cylinder
17 walking motor
2a first connecting arm 2b second connecting arm
2c connecting arm slide block 2d lifting electric cylinder
3a chassis groove
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In embodiments of the invention, where the context requires otherwise, the use of directional terms such as "upper, lower, top and bottom" is generally intended in the orientation shown in the drawings or the positional relationship of the various components in a vertical, vertical or gravitational orientation.
The invention will be described in detail below with reference to exemplary embodiments and with reference to the accompanying drawings.
As shown in fig. 1 to 8, an exemplary embodiment of the present invention provides an aerial work platform 100 comprising a work platform 1, a lifting mechanism 2 and a chassis assembly.
Specifically, the working platform 1 is used for carrying the working personnel, the lifting mechanism 2 supports the working platform 1, and the chassis assembly supports the lifting mechanism 2 and is used for realizing the walking and steering of the aerial work platform 100. The chassis assembly mainly comprises a chassis main body 3 and a leveling mechanism, wherein the chassis main body 3 is internally provided with wheels, a steering mechanism and other structures for realizing walking and steering, and the leveling mechanism is used for adjusting the working platform 1 to be in a horizontal state.
For the levelling mechanism it comprises an articulated support 4, a ramp-engaging structure and a slip drive 7. Wherein, articulated support piece 4 articulates in chassis main part 3 and supports lifting mechanism 2, because lifting mechanism 2's top is usually with work platform 1 fixed connection, consequently when articulated support piece 4 pivot so that its self and the contained angle of horizontal plane change, the contained angle of work platform 1 and horizontal plane also changes in step. The inclined plane cooperation structure includes last fitting 5 and lower fitting 6 that form inclined plane cooperation each other, goes up fitting 5 and sets up in articulated support piece 4, and lower fitting 6 sets up in chassis body 3, and when last fitting 5 and lower fitting 6 slided along the cooperation inclined plane between the two relatively, articulated support piece 4 that supports through last fitting 5 can pivot for the horizontal plane. The relative sliding of the upper fitting piece 5 and the lower fitting piece 6 along the fitting slope is realized by driving the sliding driving device 7, and the present exemplary embodiment does not limit the specific structural composition of the sliding driving device 7.
It should be particularly noted that the present exemplary embodiment also does not limit the specific relative sliding manner of the upper fitting member 5 and the lower fitting member 6 as long as it is ensured that at least one of the upper fitting member 5 and the lower fitting member 6 is formed as a sliding member.
Before explaining the technical effects of the present exemplary embodiment, the importance of keeping the work platform 1 in a horizontal state when the aerial work platform 100 walks on a slope will be explained.
Referring to fig. 2, aerial platform 100 is operating on an incline and is now being subjected to a moment balance analysis. First, the vertical dotted line in the figure is a tilting line, which always extends vertically, and the angle does not change with the inclination of the chassis body 3, and since the whole machine tilts forward with the contact point of the front side wheel and the slope as a fulcrum in the figure when the aerial work platform 100 tilts, the tilting line should pass through the contact point of the front side wheel and the slope. The gravity borne by the aerial work platform 100 is S, the vertical distance between the gravity center of the whole machine and a tipping line is L1, and the vertical distance between the gravity center of the whole machine and a slope surface is H1. The weight of the worker standing on the front extension platform of the work platform 1 is Me, and the vertical distance between the center of gravity of the worker and the tip-over line is Le. The maximum weight of a tool placed on the rear fixed platform of the working platform 1 is Mq, the center of gravity of the tool is located on the front side of the tip-over line and the vertical distance from the tip-over line is Lq. When the operator performs an operation such as maintenance on the target work object, the maximum reaction force F of the target work object is F, and the arm length of the maximum reaction force F with respect to the fulcrum (i.e., the contact point between the front wheel and the slope surface) is H2. The slope angle of the slope surface is alpha.
The moment balance analysis is performed based on the extreme stress condition of the aerial platform 100, and if the aerial platform 100 does not tip forward under the extreme stress condition, the aerial platform can be in a moment balance state under other non-extreme stress conditions, that is, the following relation is satisfied:
S*L1-Me*Le-Mq*Lq-F*H2≥0。
from this relational expression, it can be seen that as the inclination angle α increases, the work platform 1 further deviates to the front side of the tip-over line along with the chassis main body 3, so Le and Lq increase, and L1 becomes smaller. When the slope angle α is large enough, the moment balance is broken and the aerial platform 100 is at risk of tipping.
However, if the work platform 1 can be kept in a horizontal state all the time, Le and Lq will not increase and L1 will not decrease even if the slope angle α increases, so that the moment balance of the aerial work platform 100 is kept all the time, and the risk of tipping is effectively reduced.
It is apparent that the aerial work platform 100 of the present exemplary embodiment can always maintain the work platform 1 in a horizontal state. Specifically, when the aerial work platform 100 works under the inclined road condition, the controllable sliding driving device 7 drives the upper fitting piece 5 and the lower fitting piece 6 to relatively slide along the fitting inclined plane, and in the relative sliding process of the two fitting pieces, the included angle of the hinged support piece 4 relative to the horizontal plane changes, so that the included angle of the work platform 1 relative to the horizontal plane changes synchronously. The working platform 1 can be adjusted to the horizontal state no matter what the slope of the slope on which the current high-altitude operation platform 100 is located, as long as the displacement of the sliding driving device 7 is reasonably controlled.
In other words, aerial work platform 100 may provide stable work on more sloped ground. The aerial work platform 100 is not easy to wholly overturn when the work platform 1 is in a horizontal state, so that the risk of safety accidents can be effectively reduced, and the safe operation of operators can be ensured.
In an alternative or preferred embodiment, the upper fitting part 5 and the lower fitting part 6 are self-locking by means of mating ramps between them, the self-locking principle being explained in detail below:
1) analysis of overall force
Refer to the drawings5，F1Is equal to the sum of the weight of the working platform 1, the weight of the lifting mechanism 2 and the weight of the load on the working platform 1, G1Is the dead weight of the upper fitting part 5, G2The weight of the lower fitting part 6, F2Is a supporting force acting on the bottom surface of the lower fitting member 6. When the upper fitting part 5 and the lower fitting part 6 are self-locking, both remain stationary, so that the following relationship can be obtained:
F2＝F1+G1+G2。
2) upper fitting part 5 stress analysis
Referring to FIG. 6, FnSupporting force of the mating slope of the lower mating member 6 to the upper mating member 5, FfTheta is the angle between the inclined surface of the upper fitting member 5 and the horizontal plane, and the maximum static friction force acting on the inclined surface of the upper fitting member 5 is f1The coefficient of static friction between the mating inclined surface of the upper mating member 5 and the mating inclined surface of the lower mating member 6 is μ, and satisfies the following relation:
Fn＝(F1+G1)cosθ；
Ff＝(F1+G1)sinθ；
f1＝μFn；
to ensure that the upper fitting part 5 is stationary, f is satisfied1＞FfThereby, it is possible to obtain:
μ(F1+G1)cosθ＞(F1+G1)sinθ；
simplifying to obtain:
μ＞tanθ。
3) lower fitting part 6 stress analysis
Referring to fig. 7, the resultant force F of the lower fitting member 6 in the vertical direction is2-G2＝F1+G1F in FIG. 7nF in FIG. 6nActing force and reacting force are mutually, so the values are equal, F in FIG. 7fF in FIG. 6fThe acting force and the reacting force are mutually equal, so the value is equal, the included angle between the matching inclined plane of the lower matching piece 6 and the horizontal plane is also theta,the maximum static friction force acting on the mating inclined surface of the lower mating member 6 is f2The coefficient of static friction between the mating inclined surface of the upper mating member 5 and the mating inclined surface of the lower mating member 6 is μ.
To ensure that the lower fitting part 6 is stationary, f is satisfied2＞FfThus, the following can be obtained in sequence:
μ(F2-G2)cosθ＞(F1+G1)sinθ；
μ(F1+G1)cosθ＞(F1+G1)sinθ；
μ＞tanθ。
in conclusion, the stress analysis shows that to realize the self-locking of the upper fitting part 5 and the lower fitting part 6, mu is only required to be more than tan theta.
Under the condition that the upper matching piece 5 and the lower matching piece 6 are self-locked, the hinge support piece 4 is equivalently fixed, so that the working platform 1 can be stably kept in a horizontal state, and the reliability of a leveling mechanism and the safety of the aerial work platform 100 are improved.
In an alternative or preferred embodiment, the slide drive 7 is configured to self-lock when out of service to maintain the current relative positions of the upper and lower mating members 5, 6 unchanged. By means of the self-locking of the sliding drive 7, the relative position of the upper fitting part 5 and the lower fitting part 6 can also be locked, so that the work platform 1 can also be held stably in a horizontal position.
For example, the sliding driving device 7 may be an electric cylinder, and an existing electric cylinder is usually provided with a built-in motor to drive an expansion rod of the electric cylinder to move, and an outer end of the expansion rod is connected with at least one of the upper and lower mating members 5 and 6 to directly drive the two mating members to relatively displace. In order to realize the self-locking of the electric cylinder, the motor in the electric cylinder can be configured to have a self-bring brake function, so that the telescopic rod is locked at the current position under the condition that the motor is powered off (namely, under the condition that the sliding driving device 7 stops working).
Further, the self-locking function of the slide drive 7 and the self-locking functions of the upper fitting member 5 and the lower fitting member 6 can be simultaneously applied. So set up, even if the condition that motor brake trouble or electronic jar trouble lead to electronic jar auto-lock function to lose efficacy appears, through last fitting piece 5 and the auto-lock of fitting piece 6 down, still can keep work platform 1's stability. In other words, the leveling mechanism has a double self-locking protection function.
On the other hand, in the case of using an electric cylinder instead of a hydraulic cylinder as the slip driving device 7, the leveling mechanism does not have the risk of oil leakage because hydraulic oil and complicated hydraulic lines are saved. Furthermore, if the aerial work platform 100 adopts the steering electric cylinder 16 to control steering, adopts the traveling motor 17 to drive traveling, adopts the lifting electric cylinder 2d to control lifting of the lifting mechanism, and is provided with the leveling mechanism of the electric cylinder, the pure electric aerial work platform can be formed. Because the pure electric aerial work platform has no oil leakage risk, the adaptability of the pure electric aerial work platform is greatly improved, and the pure electric aerial work platform can be used in places with higher requirements on the environment.
In an alternative or preferred embodiment, referring to fig. 3 and 4, the upper fitting 5 is fixedly connected to the hinge support 4 or integrally formed on the hinge support 4, the lower fitting 6 is slidably disposed on the chassis body 3, and the sliding driving device 7 can drive the lower fitting 6 to slide.
Further, the leveling mechanism may further include a fitting piece slide rail 8 disposed on the chassis main body 3, the fitting piece slide rail 8 is formed with a fitting piece slide groove, and the lower fitting piece 6 is disposed in the fitting piece slide groove to be able to slide more stably, so that the work platform 1 is more stable when being leveled. In addition, both the groove bottom wall and the groove side wall of the sliding groove of the matching piece can be provided with a smooth structure so as to reduce the sliding resistance of the lower matching piece 6, thereby delaying the structural wear and enabling the sliding to be smoother. For example, side sliders 9 and bottom sliders 10 may be provided on the groove side walls and groove bottom walls of the mating member slide grooves, respectively, so that the side walls and bottom walls of the lower mating member 6 can be smoothly contacted with the surfaces of the side sliders 9 and the bottom sliders 10, respectively, when the lower mating member 6 slides.
In order to accurately control the stroke range of the lower matching piece 6, a limit switch can be arranged in the sliding direction of the lower matching piece 6, so that the sliding driving device 7 can stop when the lower matching piece 6 slides to the position triggering the limit switch, and the lower matching piece 6 is prevented from forcibly colliding other structures in the chassis main body 3. For example, when the fitting piece slide rail 8 is provided, limit switches may be arranged at both ends of the fitting piece slide rail 8, thereby defining both extreme positions of the lower fitting piece 6.
In an alternative or preferred embodiment, referring to fig. 3, the hinge support 4 is arranged along a straight extension direction and has two ends formed as a support hinge end hinged to the chassis body 3 and a support swing end capable of swinging up and down around the support hinge end, and the upper fitting member 5 is disposed near the support swing end. When the upper fitting piece 5 and the lower fitting piece 6 slide relatively, the swinging end of the supporting piece can be driven to swing up and down.
Further, lifting mechanism 2 can be scissors fork formula lifting mechanism, and it includes along vertical articulated a plurality of scissors fork arm group in proper order, and the scissors fork arm group that is located the bottommost includes intercrossing articulated first linking arm 2a and second linking arm 2b, and articulated support piece 4 is formed with the support piece slide rail section that sets up along the sharp extending direction. The bottom end of the first connecting arm 2a is hinged to the chassis main body 3, and the bottom end of the second connecting arm 2b is connected with a connecting arm sliding block 2c matched with the sliding rail section of the supporting piece in a sliding mode.
When the scissor type lifting mechanism is unfolded or folded to lift or lower the working platform 1, the connecting arm sliding block 2c connected to the bottom end of the second connecting arm 2b can slide along the sliding rail section of the supporting piece, so that the unfolding state and the folding state of the lifting mechanism can be switched. Therefore, the hinged support 4 can be used to adjust the included angle of the working platform 1 relative to the horizontal plane, and ensure that the function of the lifting mechanism 2 can be realized, which is equivalent to simplifying the structure of the aerial work platform 100.
In addition, a chassis groove 3a may be formed at the top of the chassis body 3, the lower fitting member 6 may be disposed in the chassis groove 3a, and the hinge support 4 may be capable of swinging up and down above the chassis groove 3a about a support hinge end. The lower fitting piece 6 is placed in the chassis groove 3a, so that the space in the chassis main body 3 can be fully utilized, and even if the leveling mechanism is arranged in the chassis main body 3, the obvious volume change can not be caused in appearance. When the leveling mechanism is provided with the aforementioned mating piece slide rail 8, the mating piece slide rail 8 can be fixedly mounted in the chassis groove 3a accordingly.
In an alternative or preferred embodiment, the lifting mechanism 2 and the slide drive 7 are arranged in an interlocking manner. That is, the restricting slide driving means 7 is temporarily disabled during the unfolding or folding of the lifting mechanism 2, and the restricting lifting mechanism 2 is temporarily disabled from being unfolded or folded while the slide driving means 7 drives the upper and lower fitting members 5 and 6 to be relatively slid to level the work platform 1. Through this kind of interlocking setting, can avoid the operation personnel to stand unstably on work platform 1 to further reduce the risk that takes place the incident.
In an alternative or preferred embodiment, aerial work platform 100 has the function of adaptively leveling work platform 1 according to road conditions. Specifically, referring to FIG. 8, aerial work platform 100 further includes a chassis tilt sensor 11, a platform tilt sensor 12, and a controller 14. Wherein, chassis inclination sensor 11 is used for detecting the inclination of chassis main body 3 relative to the horizontal plane and outputting corresponding chassis inclination signal, platform inclination sensor 12 is used for detecting the inclination of working platform 1 relative to the horizontal plane and outputting corresponding platform inclination signal, controller 14 is respectively communicated with chassis inclination sensor 11, platform inclination sensor 12 and slip driving device 7, and controller 14 is configured to: 1) determining that the chassis main body 3 inclines relative to the horizontal plane according to the chassis inclination angle signal, and controlling the sliding driving device 7 to act; 2) and determining that the working platform 1 is in a horizontal state according to the platform inclination angle signal, and controlling the sliding driving device 7 to stop acting.
It can be seen that the chassis tilt angle sensor 11 and the platform tilt angle sensor 12 are arranged in the aerial work platform 100, so that the position states (horizontal state or inclined state) of the chassis main body 3 and the work platform 1 can be monitored in real time, and the controller 14 is interconnected with the chassis tilt angle sensor 11 and the platform tilt angle sensor 12, so that the work platform 1 can be adjusted to be in the horizontal state all the time, and the automation and intelligence degree of the aerial work platform 100 is improved.
Further, the interlocking scheme of the lifting mechanism 2 and the sliding driving device 7 can be combined into the adaptive leveling working platform scheme of the embodiment.
For example, referring to fig. 8, aerial work platform 100 may further include a steering device 13, typically a platform handle for operator steering, and a drive 15 for transmitting control signals from controller 14 to skid drive 7. By way of illustration, an alternative adaptive leveling work platform scheme is described below with reference to fig. 8, and the specific steps of the scheme are:
step a: when the aerial work platform 100 is static, the hinge support 4 is in an initial state (i.e. no inclination angle is formed with respect to the chassis main body 3), and when the lifting mechanism 2 needs to be controlled to perform a lifting action, a lifting enable button on the control device 13 is pressed;
step b: the chassis tilt sensor 11 transmits a front-back tilt signal of the ground (i.e., a chassis tilt signal) to the controller 14, and assuming that the caster angle of the chassis main body 3 is negative, the controller 14 selects one of the following control modes to perform:
step b-1: when the preset value is 1 (such as 0 degrees) or less and the front-back direction inclination angle is not more than 2 (such as 5 degrees), controlling the electric cylinder (namely the sliding driving device 7) to contract, adjusting the hinged support piece 4 to incline downwards, transmitting a platform inclination angle signal to the controller 14 by the platform inclination angle sensor 12, and when the platform inclination angle is 0 degrees, stopping the electric cylinder;
step b-2: the front-back direction inclination angle is less than or equal to a preset value 3 (such as-5 degrees) and less than or equal to a preset value 1 (such as 0 degrees), the electric cylinder is controlled to extend, the hinged support piece 4 is adjusted to incline upwards, the platform inclination angle sensor 12 transmits a platform inclination angle signal to the controller 14, and when the platform inclination angle is 0 degrees, the electric cylinder stops acting;
step c: when the hinged support 4 is adjusted in place, the lifting enabling button on the control device 13 can really trigger the lifting mechanism 2 to execute the lifting action;
step d: when the working platform is lowered to the lowest position (i.e. the lifting mechanism 2 is in the fully folded state), the inclination angle signals of the chassis inclination angle sensor 11 and the platform inclination angle sensor 12 are respectively detected, the difference value between the two is calculated, and the electric cylinder is actuated until the difference value is 0 so as to reset the hinge support 4 to the initial state.
Finally, it should be noted that the leveling mechanism of the present exemplary embodiment is suitable for leveling the work platform 1 in the front-back direction, the left-right direction, or other directions.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that, in the foregoing embodiments, various features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in further detail in the embodiments of the present invention.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (12)
1. An aerial work platform, characterized in that the aerial work platform (100) comprises:
a work platform (1);
a lifting mechanism (2) supporting the working platform (1); and
the chassis assembly, including chassis main part (3) and levelling mechanism, levelling mechanism includes:
a hinged support (4) hinged to the chassis body (3) and supporting the lifting mechanism (2);
the inclined plane matching structure comprises an upper matching piece (5) and a lower matching piece (6) which are mutually in inclined plane matching, and the upper matching piece (5) and the lower matching piece (6) are respectively arranged on the hinged support piece (4) and the chassis main body (3);
and the sliding driving device (7) can drive the upper matching piece (5) and the lower matching piece (6) to relatively slide along the matching inclined plane so as to adjust the working platform (1) to be in a horizontal state.
2. The aerial work platform of claim 1, wherein the included angle between the matching inclined surface of the upper matching piece (5) and the horizontal plane and the included angle between the matching inclined surface of the lower matching piece (6) and the horizontal plane are both theta, and the static friction coefficient between the matching inclined surface of the upper matching piece (5) and the matching inclined surface of the lower matching piece (6) is mu, so that the following requirements are met: mu > tan theta.
3. Aerial work platform according to claim 1, characterised in that the skid drive (7) is configured to self-lock when out of service to maintain the current relative position of the upper and lower mating members (5, 6) unchanged.
4. Aerial work platform according to claim 1, characterized in that the upper fitting piece (5) is fixedly connected to the articulated support (4), the lower fitting piece (6) is slidably arranged to the chassis body (3), and the sliding drive (7) is capable of driving the lower fitting piece (6) to slide.
5. The aerial work platform as claimed in claim 4, characterized in that the leveling mechanism comprises a fitting piece sliding rail (8) arranged on the chassis main body (3), the fitting piece sliding rail (8) is formed with a fitting piece sliding groove, and the sliding driving device (7) can drive the lower fitting piece (6) to slide in the fitting piece sliding groove.
6. The aerial work platform of claim 5 wherein the trough bottom wall and the trough side walls of the mating member runner are provided with a smooth structure.
7. Aerial work platform according to claim 4, characterized in that the levelling mechanism comprises a limit switch arranged in the sliding direction of the lower fitting piece (6), the sliding drive (7) being capable of braking when the lower fitting piece (6) is slid to a position where the limit switch is triggered.
8. Aerial work platform according to claim 1, characterized in that the articulated support (4) is arranged in a straight extension direction and has two ends formed as a support piece articulated end articulated to the chassis body (3) and a support piece swinging end capable of swinging up and down around the support piece articulated end, respectively, the upper fitting piece (5) being arranged close to the support piece swinging end.
9. The aerial work platform as claimed in claim 8, wherein the hinged support (4) is formed with a support slide rail section arranged along the linear extending direction, the lifting mechanism (2) is a scissor type lifting mechanism and comprises a plurality of scissor arm sets which are sequentially hinged along the vertical direction, the scissor arm set positioned at the lowest position comprises a first connecting arm (2a) and a second connecting arm (2b) which are hinged in a cross mode, the bottom end of the first connecting arm (2a) is hinged to the chassis main body (3), and the bottom end of the second connecting arm (2b) is connected with a connecting arm sliding block (2c) matched with the support slide rail section in a sliding mode.
10. Aerial work platform according to claim 8, characterized in that the chassis body (3) is formed with a chassis recess (3a) at the top, the lower fitting (6) being arranged in the chassis recess (3a), the articulated support (4) being swingable up and down above the chassis recess (3a) about the support hinge end.
11. Aerial work platform according to claim 1, characterised in that the lifting mechanism (2) and the skid drive (7) are arranged interlocked.
12. The aerial work platform of any one of claims 1 to 11, wherein the aerial work platform (100) further comprises:
the chassis inclination angle sensor (11) is used for detecting the inclination angle of the chassis main body (3) relative to the horizontal plane and outputting a corresponding chassis inclination angle signal;
the platform inclination angle sensor (12) is used for detecting the inclination angle of the working platform (1) relative to a horizontal plane and outputting a corresponding platform inclination angle signal; and
a controller (14) in communication with the chassis tilt sensor (11), the platform tilt sensor (12) and the slip drive (7), respectively, and configured to:
determining that the chassis main body (3) inclines relative to the horizontal plane according to the chassis inclination angle signal, and controlling the sliding driving device (7) to act;
and determining that the working platform (1) is in a horizontal state according to the platform inclination angle signal, and controlling the sliding driving device (7) to stop acting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210050421.XA CN114408820A (en) | 2022-01-17 | 2022-01-17 | Aerial work platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210050421.XA CN114408820A (en) | 2022-01-17 | 2022-01-17 | Aerial work platform |
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| Publication Number | Publication Date |
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| CN114408820A true CN114408820A (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210050421.XA Pending CN114408820A (en) | 2022-01-17 | 2022-01-17 | Aerial work platform |
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| CN (1) | CN114408820A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114684760A (en) * | 2022-05-31 | 2022-07-01 | 徐州智云安全技术研究院有限公司 | Elevator suitable for coal mine |
| CN115123979A (en) * | 2022-06-14 | 2022-09-30 | 广西大学 | Lifting platform and high-altitude rescue vehicle |
| CN115353043A (en) * | 2022-08-17 | 2022-11-18 | 湖南中联重科智能高空作业机械有限公司 | Self-adjusting flat base and high-altitude operation machine |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101492058A (en) * | 2008-01-24 | 2009-07-29 | 襄樊金鹰轨道车辆有限责任公司 | Leveling system of railway electrification working vehicle |
| CN107487736A (en) * | 2017-09-18 | 2017-12-19 | 沈阳农业大学 | A kind of high-altitude orchard operation assistance platform |
| CN207618967U (en) * | 2017-12-05 | 2018-07-17 | 河北科江冶金机械有限公司 | A kind of hydraulic-driven levelling device of novel altitude operation platform |
| CN208361802U (en) * | 2018-06-21 | 2019-01-11 | 北京京东尚科信息技术有限公司 | A kind of lifting mechanism |
| CN109210321A (en) * | 2018-09-28 | 2019-01-15 | 中国科学院长春光学精密机械与物理研究所 | Drift levelling mechanism |
| CN210004041U (en) * | 2019-03-27 | 2020-01-31 | 上海林源自动化设备有限公司 | Heavy platform supporting sizing block |
| CN210683120U (en) * | 2019-09-06 | 2020-06-05 | 湖北高曼重工科技有限公司 | Crawler-type scissor aerial work vehicle capable of being bidirectionally leveled |
| CN112830178A (en) * | 2021-04-13 | 2021-05-25 | 铽罗（上海）机器人科技有限公司 | Double-lifting AGV trolley |
| CN112847382A (en) * | 2019-11-27 | 2021-05-28 | 广东博智林机器人有限公司 | Horizontal leveling device and construction robot |
| CN113044761A (en) * | 2021-04-27 | 2021-06-29 | 北京安达维尔航空设备有限公司 | Lifting device based on Mecanum wheel |
| CN113821060A (en) * | 2021-08-17 | 2021-12-21 | 湖南中联重科智能高空作业机械有限公司 | Leveling device and load control device for aerial work platform |
-
2022
- 2022-01-17 CN CN202210050421.XA patent/CN114408820A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101492058A (en) * | 2008-01-24 | 2009-07-29 | 襄樊金鹰轨道车辆有限责任公司 | Leveling system of railway electrification working vehicle |
| CN107487736A (en) * | 2017-09-18 | 2017-12-19 | 沈阳农业大学 | A kind of high-altitude orchard operation assistance platform |
| CN207618967U (en) * | 2017-12-05 | 2018-07-17 | 河北科江冶金机械有限公司 | A kind of hydraulic-driven levelling device of novel altitude operation platform |
| CN208361802U (en) * | 2018-06-21 | 2019-01-11 | 北京京东尚科信息技术有限公司 | A kind of lifting mechanism |
| CN109210321A (en) * | 2018-09-28 | 2019-01-15 | 中国科学院长春光学精密机械与物理研究所 | Drift levelling mechanism |
| CN210004041U (en) * | 2019-03-27 | 2020-01-31 | 上海林源自动化设备有限公司 | Heavy platform supporting sizing block |
| CN210683120U (en) * | 2019-09-06 | 2020-06-05 | 湖北高曼重工科技有限公司 | Crawler-type scissor aerial work vehicle capable of being bidirectionally leveled |
| CN112847382A (en) * | 2019-11-27 | 2021-05-28 | 广东博智林机器人有限公司 | Horizontal leveling device and construction robot |
| CN112830178A (en) * | 2021-04-13 | 2021-05-25 | 铽罗（上海）机器人科技有限公司 | Double-lifting AGV trolley |
| CN113044761A (en) * | 2021-04-27 | 2021-06-29 | 北京安达维尔航空设备有限公司 | Lifting device based on Mecanum wheel |
| CN113821060A (en) * | 2021-08-17 | 2021-12-21 | 湖南中联重科智能高空作业机械有限公司 | Leveling device and load control device for aerial work platform |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114684760A (en) * | 2022-05-31 | 2022-07-01 | 徐州智云安全技术研究院有限公司 | Elevator suitable for coal mine |
| CN115123979A (en) * | 2022-06-14 | 2022-09-30 | 广西大学 | Lifting platform and high-altitude rescue vehicle |
| CN115123979B (en) * | 2022-06-14 | 2024-06-04 | 广西大学 | Lifting platform and high-altitude rescue vehicle |
| CN115353043A (en) * | 2022-08-17 | 2022-11-18 | 湖南中联重科智能高空作业机械有限公司 | Self-adjusting flat base and high-altitude operation machine |
| CN115353043B (en) * | 2022-08-17 | 2024-01-05 | 湖南中联重科智能高空作业机械有限公司 | Self-leveling chassis and overhead working machine |
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