CN114212744B - Aerial working platform and adjustable chassis counterweight mechanism thereof - Google Patents
Aerial working platform and adjustable chassis counterweight mechanism thereof Download PDFInfo
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- CN114212744B CN114212744B CN202111615794.9A CN202111615794A CN114212744B CN 114212744 B CN114212744 B CN 114212744B CN 202111615794 A CN202111615794 A CN 202111615794A CN 114212744 B CN114212744 B CN 114212744B
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Classifications
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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
- B66F11/044—Working platforms suspended from booms
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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
- B66F13/00—Common constructional features or accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
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Abstract
The invention discloses an adjustable chassis counterweight mechanism, which comprises a chassis, a counterweight block movably arranged on the chassis, a driving part arranged on the chassis and used for driving the counterweight block to reciprocate along the width direction of the chassis, a first angle sensor used for detecting the inclination angle of the chassis relative to the ground, a second angle sensor used for detecting the amplitude variation angle of an arm support relative to the chassis, and a controller in signal connection with the first angle sensor, the second angle sensor and the control end of the driving part, wherein the controller is used for calculating the target moving distance of the counterweight block relative to the center of the width direction of the chassis through a preset formula and controlling the driving state of the driving part on the counterweight block according to the target moving distance. According to the invention, the gravity center position of the chassis is regulated by the controller, so that the aerial working platform tends to be in a moment balance state, and the backward tilting stability can be improved on the basis of not reducing the amplitude angle of the arm support. The invention also discloses an aerial working platform, which has the beneficial effects as described above.
Description
Technical Field
The invention relates to the technical field of engineering equipment, in particular to an adjustable chassis counterweight mechanism. The invention also relates to an aerial working platform.
Background
The aerial work platform (Aerial work platform) is a product for servicing movable aerial works such as aerial works, equipment installation, overhaul and the like in various industries. According to the difference of structural characteristics, the aerial work platform mainly comprises an arm aerial work platform, a scissor type aerial work platform, a trailer type aerial work platform, an off-road aerial work platform, a sleeve type aerial work platform, a spider type aerial work platform and the like.
Taking an arm type aerial working platform as an example, the aerial working platform mainly comprises a chassis, a turntable and an arm support. Wherein, the chassis is generally matched with tires, tracks and the like to realize the walking function. The turntable is arranged on the chassis and can perform horizontal rotation movement so as to adjust the working direction. The arm support is arranged on the turntable, and can perform vertical overturning movement and axial telescopic movement so as to adjust the amplitude variation angle and the elongation, so that the top end of the arm support is lifted to a target position, and a worker can conveniently perform high-altitude operation or transport objects to the high altitude.
At present, safety is one of the most considered problems of an aerial working platform, and stability is a direct representation of safety performance. For an arm type aerial working platform, the overall stability is divided into forward tilting stability and backward tilting stability. In the prior art, the forward tilting stability can be improved by shortening the length of the arm support, and the backward tilting stability can only be improved by limiting the amplitude angle of the arm support. However, if the amplitude variation angle of the arm support is reduced, the backward tilting working height of the whole machine is difficult to meet the design value, and the performance of the whole machine does not reach the standard. In general, in various performance indexes of an aerial working platform, the reduction of the horizontal extension length of the whole machine is acceptable, however, if the working height of the whole machine is reduced due to the reduction of the boom amplitude angle, the quality of the whole machine is directly unqualified.
Therefore, how to improve the backward tilting stability of the whole aerial working platform on the basis of avoiding reducing the amplitude angle of the arm support is a technical problem faced by the person skilled in the art.
Disclosure of Invention
The invention aims to provide an adjustable chassis counterweight mechanism which can improve the backward tilting stability of the whole aerial working platform on the basis of avoiding reducing the amplitude angle of an arm support. Another object of the present invention is to provide an aerial work platform.
In order to solve the technical problems, the invention provides an adjustable chassis counterweight mechanism, which comprises a chassis, a counterweight block movably arranged on the chassis, a driving component arranged on the chassis and used for driving the counterweight block to reciprocate along the width direction of the chassis, and a driving component used for detecting the chassis relative to the groundThe device comprises a first angle sensor of an inclination angle, a second angle sensor for detecting the amplitude variation angle of the arm support relative to the chassis, and a controller in signal connection with the first angle sensor, the second angle sensor and a control end of the driving part, wherein the controller is used for realizing the following formula: g 1 L 1 cosβ+G 2 L 2 cosβ+G 3 (L 3 +ΔL)cosβ+[G 4 L 4 +G 4 L 5 (1-sinα)]cosβ＝G 5 L 6 (1+sin beta) calculating a target moving distance of the balancing weight relative to the width direction center of the chassis, and controlling a driving state of the driving part on the balancing weight according to the target moving distance;
wherein alpha is an amplitude variation angle, and beta is an inclination angle;
g1 is the weight of the chassis, G2 is the weight of the turntable, G3 is the weight of the balancing weight, G4 is the weight of the arm support, and G5 is the weight of the balancing weight of the turntable;
l1 is the distance between the gravity center of the chassis and the tipping line of the aerial working platform;
l2 is the distance between the center of gravity of the turntable and the tipping line;
l3 is the distance between the gravity center of the balancing weight and the tipping line when the balancing weight is centered in the width direction of the chassis;
l4 is the distance between the center of gravity of the boom and the roll line when α=90°;
l5 is the distance between the center of gravity of the boom when α=90° and the center of gravity of the boom when α=0°;
l6 is the distance between the gravity center of the turntable counterweight and the tipping line;
Δl is the target movement distance of the counterweight relative to the widthwise center of the chassis.
Preferably, the balancing weight comprises a plurality of sub-blocks which are distributed in parallel along the length direction of the chassis and keep synchronous motion, and each sub-block is divided into two ends of the chassis in the length direction.
Preferably, the chassis is further provided with a sliding rail extending along the width direction of the chassis, and the balancing weight is slidably arranged on the sliding rail.
Preferably, the driving component is a driving cylinder, an output end of the driving cylinder is connected with the balancing weight, and a telescopic direction of the output end of the driving cylinder is a width direction of the chassis.
Preferably, the driving cylinders are distributed on two sides of the balancing weight at the same time, and the output ends of the driving cylinders are respectively connected with side walls on two sides of the balancing weight.
Preferably, the device further comprises a displacement sensor which is arranged on the chassis and used for detecting the actual moving distance of the balancing weight, and the displacement sensor is in signal connection with the controller.
Preferably, the displacement sensor comprises a plurality of proximity switches which are distributed along the width direction of the chassis and face the balancing weight.
Preferably, the turntable comprises a first angle sensor for detecting the rotation angle of the turntable relative to the chassis, and the first angle sensor is in signal connection with the controller to activate the control of the driving part by the controller when the turntable is within a preset angle range and the elongation is zero.
Preferably, the device further comprises a distance sensor for detecting the elongation of the arm support, wherein the distance sensor is in signal connection with the controller so as to adjust the elongation of the arm support to zero when the turntable is in a preset angle range.
The invention also provides an aerial working platform, which comprises a turntable, an arm support and an adjustable chassis counterweight mechanism, wherein the adjustable chassis counterweight mechanism is specifically any one of the adjustable chassis counterweight mechanisms.
The invention provides an adjustable chassis counterweight mechanism which is suitable for an arm type aerial work platform and mainly comprises a chassis, a counterweight block, a driving part, a first angle sensor, a second angle sensor and a controller. The chassis is a main body part of the mechanism and is mainly used for installing the turntable and other parts. The counterweight block is arranged on the chassis and can reciprocate on the chassis along the width direction of the counterweight block. The driving part is arranged on the chassis, and the output end of the driving part is in power connection with the balancing weight and is mainly used for driving the balancing weight to perform directional movement. The first angle sensor is mainly used for detecting the inclination angle of the chassis relative to the ground (i.e., the supporting surface for supporting the chassis), which varies with the unevenness of the ground. The second angle sensor is mainly used for detecting the amplitude variation angle, namely the elevation angle, of the arm support relative to the chassis, and the amplitude variation angle of the arm support can be changed at any time in the operation process. The controller is in signal connection with the control ends of the first angle sensor, the second angle sensor and the driving part, and is mainly used for balancing the formula through the moment:
G 1 L 1 cosβ+G 2 L 2 cosβ+G 3 (L 3 +ΔL)cosβ+[G 4 L 4 +G 4 L 5 (1-sinα)]cosβ＝G 5 L 6 (1+sinβ)
and calculating the target moving distance of the balancing weight relative to the center of the chassis in the width direction, and controlling the driving state of the driving part on the balancing weight according to the calculation result so that the driving part drives the balancing weight to quickly move to the target moving distance position. Therefore, when the adjustable chassis counterweight mechanism is in a backward tilting working condition in the working process of the aerial working platform, the position of the counterweight block in the width direction of the chassis is accurately adjusted by utilizing the control of the controller to the driving part, so that the gravity center position of the chassis is finely adjusted, the whole aerial working platform tends to be in a moment balance state, and the tilting risk is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic overall structure of an embodiment of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a control structure diagram of the controller.
Fig. 4 is a schematic diagram of a state of the aerial working platform when the whole machine is in a backward tilting working condition.
Fig. 5 is a schematic diagram of the turntable position of the aerial work platform when the whole machine is in a backward tilting condition.
Wherein, in fig. 1-5:
tipping line-a;
the device comprises a chassis-1, a turntable-2, an arm support-3, a balancing weight-4, a driving part-5, a first angle sensor-6, a second angle sensor-7, a controller-8, a sliding rail-9, a displacement sensor-10, a third angle sensor-11 and a distance sensor-12;
turret counterweight-21, proximity switch-101.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, 3 and 4, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention, fig. 3 is a control structure diagram of a controller 8, fig. 4 is a schematic state diagram of an aerial working platform when the whole machine is in a backward tilting condition,
in one embodiment of the present invention, the adjustable chassis weight mechanism mainly includes a chassis 1, a weight 4, a driving part 5, a first angle sensor 6, a second angle sensor 7, and a controller 8.
The chassis 1 is a main body part of the mechanism and is mainly used for installing the turntable 2 and other parts.
The weight 4 is provided on the chassis 1 and is reciprocatingly movable on the chassis 1 in the width direction thereof.
The driving part 5 is arranged on the chassis 1, and the output end of the driving part is in power connection with the balancing weight 4 and is mainly used for driving the balancing weight 4 to perform directional movement.
The first angle sensor 6 is mainly used to detect an inclination angle of the chassis 1 with respect to the ground (i.e., a supporting surface for supporting the chassis 1), which varies with unevenness of the ground. Generally, when the ground is a smooth surface, the inclination angle is zero, which is equivalent to the situation that the whole machine of the overhead working equipment is horizontally placed on the ground.
The second angle sensor 7 is mainly used for detecting the amplitude variation angle, namely the elevation angle, of the arm support 3 relative to the chassis 1, and the amplitude variation angle of the arm support 3 can be changed at any time in the operation process. In general, in the initial state, the boom 3 is kept parallel to the surface or ground of the chassis 1, and the luffing angle is zero at this time.
The controller 8 is in signal connection with the control ends of the first angle sensor 6, the second angle sensor 7 and the driving part 5, and is mainly used for balancing the formula through moment:
G 1 L 1 cosβ+G 2 L 2 cosβ+G 3 (L 3 +ΔL)cosβ+[G 4 L 4 +G 4 L 5 (1-sinα)]cosβ＝G 5 L 6 (1+sinβ)
and calculating the target moving distance of the balancing weight 4 relative to the center of the chassis 1 in the width direction, and controlling the driving state of the driving part 5 on the balancing weight 4 according to the calculation result so that the driving part 5 drives the balancing weight 4 to quickly move to the target moving distance position.
Wherein alpha is an amplitude variation angle, and beta is an inclination angle; g1 is the weight of the chassis 1, G2 is the weight of the turntable 2, G3 is the weight of the counterweight 4, G4 is the weight of the boom 3, and G5 is the weight of the turntable counterweight 21; l1 is the distance between the center of gravity of the chassis 1 and the roll line of the aerial work platform, L2 is the distance between the center of gravity of the turntable 2 and the roll line, L3 is the distance between the center of gravity of the counterweight 4 when centered in the width direction of the chassis 1 and the roll line, L4 is the distance between the center of gravity of the boom 3 when α=90° and the roll line, L5 is the distance between the center of gravity of the boom 3 when α=90° and the center of gravity of the boom 3 when α=0°, L6 is the distance between the center of gravity of the turntable counterweight 21 and the roll line, and Δl is the target movement distance of the counterweight 4 with respect to the center of the chassis 1 in the width direction.
The specific values of alpha and beta are measured in real time in the operation process, G 1 、G 2 、G 3 、G 4 、G 5 Are all fixed values, the tipping line is related to the whole machine structure of the aerial working platform, and L 1 、L 2 、L 3 、L 4 、L 5 、L 6 Is a pre-measured constant value and can be introduced into the controller 8 in advance. And, according to the relative position relation between the connection position of the arm support 3 on the chassis 1 and the tipping line, L 4 There is a distinction between positive and negative values.
Similarly, the calculation result Δl of the controller 8 also differs between positive and negative values, specifically, when Δl is a positive value, the weight 4 needs to be moved by Δl distance along the width direction of the chassis 1 and in a direction away from the turntable weight 21; conversely, when Δl is negative, the weight 4 needs to be moved by Δl distance in the width direction of the chassis 1 and in the direction approaching the turntable weight 21.
So, when the adjustable chassis counterweight mechanism provided by this embodiment is in the backward tilting working condition in the operation process of the aerial working platform, the controller 8 is utilized to control the driving component 5, and the position of the counterweight 4 on the width direction of the chassis 1 is precisely adjusted, so that the gravity center position of the chassis 1 is precisely adjusted, and then the whole aerial working platform tends to be in a moment balance state, and the tilting risk is avoided.
As shown in fig. 2, fig. 2 is a top view of fig. 1.
In an alternative embodiment with respect to the weight 4, the weight 4 comprises a plurality of sub-blocks. Specifically, each sub-block is distributed on the surface of the chassis 1 and is distributed in parallel or in a straight line along the length direction of the chassis 1, and at the same time, the movement state of each sub-block in the width direction of the chassis 1 is kept uniform. In general, each sub-block may be located at both end regions in the longitudinal direction of the chassis 1, respectively. The total weight of each sub-block and the weight of the single balancing weight 4 are kept unchanged, the distribution form of each sub-block does not influence the moment calculated value in the formula, and the weight distribution of the chassis 1 is balanced.
In order to ensure that the counterweight 4 can accurately reciprocate along the width direction of the chassis 1 under the drive of the driving component 5, a sliding rail 9 is added in this embodiment. Specifically, the slide rail 9 extends in the width direction thereof on the chassis 1, and the weight 4 is disposed on the slide rail 9 in sliding engagement therewith. So set up, utilize slide rail 9 to the restriction of balancing weight 4, can form the motion guide effect to balancing weight 4 when balancing weight 4 receives the drive of drive unit 5, prevent that balancing weight 4's actual motion orbit from producing the deviation.
Generally, a groove is formed on the surface of the chassis 1 along the length direction, and the balancing weight 4, the driving component 5, the sliding rail 9 and other components are all arranged in the groove. Wherein in the initial state, the weight 4 is held at the widthwise center position of the groove, i.e., the widthwise center position of the chassis 1. Correspondingly, two ends of the sliding rail 9 are respectively abutted with two side groove walls of the groove, and one end of the driving part 5 is connected to one side groove wall of the groove. So set up, balancing weight 4 can follow slide rail 9 in the width direction space of the both sides cell wall of recess, through the butt of the both sides cell wall of recess to the lateral wall of balancing weight 4, restriction balancing weight 4's maximum motion stroke.
In an alternative embodiment with respect to the driving member 5, the driving member 5 is in particular a driving cylinder, such as an oil cylinder, a gas cylinder or the like. At the same time, the output end of the driving cylinder is connected with the balancing weight 4, and the expansion and contraction direction of the output end of the driving cylinder is parallel to the width direction of the chassis 1. In general, the cylinder body of the drive cylinder may be connected to the wall of the recess, while the end of the piston rod of the drive cylinder may be connected to the side wall of the counterweight 4, or vice versa, the cylinder body of the drive cylinder is connected to the side wall of the counterweight 4, while the end of the piston rod of the drive cylinder is connected to the wall of the recess.
Of course, the driving member 5 is not limited to the above-described driving cylinder, and other driving members such as a linear motor, a screw transmission mechanism, and the like may be employed as well.
Further, in order to improve the driving stability of the driving component 5 to the balancing weight 4, in this embodiment, two driving cylinders may be simultaneously provided and respectively distributed on two sides of the balancing weight 4, and output ends of the two driving cylinders are respectively connected with two side walls of the balancing weight 4, and output states are kept synchronous. Of course, the two drive cylinders may also be distributed on both sides of the sub-block, respectively. So set up, drive the both sides lateral wall of balancing weight 4 simultaneously through two drive parts 5 and move, can guarantee balancing weight 4's motion stability as far as possible, prevent balancing weight 4 to produce rotatory or swing tendency.
In addition, in order to accurately detect the actual moving distance and position of the weight 4, a displacement sensor 10 is added in the present embodiment. Specifically, the displacement sensor 10 mainly includes a plurality of proximity switches 101, where each proximity switch 101 is disposed on the chassis 1, for example, in a groove formed on the surface of the chassis 1, and meanwhile, each proximity switch 101 is distributed along the width direction of the chassis 1 and faces the counterweight 4, and is mainly used for detecting the position change of the counterweight 4, so as to calculate the displacement thereof.
Generally, 3 proximity switches 101 may be simultaneously set, and are respectively located in a left side area, a center area, and a right side area of the chassis 1 in the width direction, and may cooperate to accurately detect an actual displacement and a position change of the balancing weight 4 on the chassis 1, and send data to the controller 8 in real time, so that the controller 8 corrects a control instruction according to feedback data of the displacement sensor 10, and meanwhile, in an initial state, the controller 8 may also be enabled to learn a position of the balancing weight 4 on the chassis 1, so as to determine whether the balancing weight is reset and centered.
As shown in fig. 4 and 5, fig. 5 is a schematic view of the position of the turntable 2 when the whole aerial platform is in a backward tilting condition.
In addition, the aerial working platform can have various working conditions in the working process, and the intervention control of the controller 8 is generally only needed when the whole aerial working platform is in a backward tilting working condition. In order to accurately judge the current working condition of the aerial working platform, a third angle sensor 11 is added in the embodiment. Specifically, the third angle sensor 11 is mainly configured to detect a rotation angle (illustrated θ) of the turntable 2 relative to the chassis 1, and is in signal connection with the controller 8, so as to send a detection result to the controller 8 in real time, and when the turntable 2 is within a preset angle range, the controller 8 is activated to start a control measure for the driving component 5, so as to adjust the center of gravity of the chassis 1. Typically, θ is 45 ° to 75 °, such as 60 °, and the like, and is located entirely on the left or right side of the chassis 1 (based on the longitudinal direction of the chassis 1).
Further, considering that the length of the arm rest 3 also has an influence on the whole working condition, for example, when the arm rest 3 extends longer, the center of gravity is relatively close to the top end of the arm rest 3, and at this time, the forward tilting stability needs to be considered generally, so in order to improve the accuracy of the judgment result of the working condition of the whole working condition, the distance sensor 12 is additionally arranged in the embodiment. Specifically, the distance sensor 12 mainly detects the elongation (illustrated x) of the boom 3, and is in signal connection with the controller 8, so as to send the detection result to the controller 8 in real time, when the turntable 2 is within the above-mentioned θ range and x=0, the whole machine can be judged to be in a backward tilting condition, and at this time, the controller 8 is activated, and starts to execute control measures on the driving component 5 so as to adjust the center of gravity of the chassis 1.
The embodiment also provides an aerial working platform, which mainly comprises a turntable 2, an arm support 3 and an adjustable chassis counterweight mechanism, wherein the specific content of the adjustable chassis counterweight mechanism is the same as the related content, and the details are not repeated here.
It should be noted that, the adjustable chassis counterweight mechanism provided in this embodiment is particularly suitable for an arm type aerial work platform, but may also be suitable for other aerial work platforms with similar arm structures.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides an adjustable chassis counter weight mechanism, includes chassis (1), its characterized in that still include movably set up in balancing weight (4) on chassis (1), set up in on chassis (1) and be used for driving balancing weight (4) are followed drive part (5) of width direction reciprocating motion of chassis (1), be used for detecting first angle sensor (6) of inclination of chassis (1) relative to ground, be used for detecting cantilever crane (3) relative to the amplitude of change angle of chassis (1), and with first angle sensor (6) second angle sensor (7) controller (8) of control end signal connection of drive part (5), controller (8) are used for through the formula:
G 1 L 1 cosβ+G 2 L 2 cosβ+G 3 (L 3 +ΔL)cosβ+[G 4 L 4 +G 4 L 5 (1-sinα)]cosβ＝G 5 L 6 (1+sinβ)
calculating a target moving distance of the balancing weight (4) relative to the width direction center of the chassis (1), and controlling the driving state of the driving part (5) on the balancing weight (4) according to the target moving distance;
wherein alpha is an amplitude variation angle, and beta is an inclination angle;
g1 is the weight of the chassis (1), G2 is the weight of the turntable (2), G3 is the weight of the balancing weight (4), G4 is the weight of the arm support (3), and G5 is the weight of the turntable balancing weight (21);
l1 is the distance between the gravity center of the chassis (1) and the tipping line of the aerial working platform;
l2 is the distance between the center of gravity of the turntable (2) and the tipping line;
l3 is the distance between the gravity center of the balancing weight (4) and the tipping line when the balancing weight is centered in the width direction of the chassis (1);
l4 is the distance between the centre of gravity of the boom (3) and the roll line when α=90°;
l5 is the distance between the center of gravity of the boom (3) when α=90° and the center of gravity of the boom (3) when α=0°;
l6 is the distance between the center of gravity of the turntable counterweight (21) and the tipping line;
Δl is a target movement distance of the weight (4) with respect to the widthwise center of the chassis (1).
2. The adjustable chassis weight mechanism according to claim 1, wherein the weight (4) comprises a plurality of sub-blocks which are arranged in parallel along the length direction of the chassis (1) and keep a synchronous motion state, and each sub-block is arranged at two ends of the length direction of the chassis (1).
3. The adjustable chassis weight mechanism according to claim 1, wherein the chassis (1) is further provided with a slide rail (9) extending in a width direction thereof, and the weight (4) is slidably provided on the slide rail (9).
4. The adjustable chassis counterweight mechanism according to claim 1, characterized in that the driving member (5) is a driving cylinder, an output end of the driving cylinder is connected to the counterweight (4), and a telescoping direction of the output end of the driving cylinder is a width direction of the chassis (1).
5. The adjustable chassis counterweight mechanism of claim 4, wherein the driving cylinders are simultaneously distributed on two sides of the counterweight (4), and the output ends of the driving cylinders are respectively connected with two side walls of the counterweight (4).
6. The adjustable chassis counterweight mechanism according to claim 1, further comprising a displacement sensor (10) provided on the chassis (1) for detecting an actual moving distance of the counterweight (4), and the displacement sensor (10) is in signal connection with the controller (8).
7. The adjustable chassis counterweight mechanism according to claim 6, characterized in that the displacement sensor (10) comprises a plurality of proximity switches (101) distributed in the width direction of the chassis (1) and facing the counterweight (4).
8. Adjustable chassis counterweight mechanism according to claim 1, further comprising a third angle sensor (11) for detecting the rotation angle of the turntable (2) relative to the chassis (1), the third angle sensor (11) being in signal connection with the controller (8) for activating the control of the driving member (5) by the controller (8) when the turntable (2) is within a preset angle range.
9. Adjustable chassis counterweight mechanism according to claim 8, further comprising a distance sensor (12) for detecting the elongation of the boom (3), the distance sensor (12) being in signal connection with the controller (8) for activating the control of the driving member (5) by the controller (8) when the turntable (2) is within a preset angular range and the elongation is zero.
10. An aerial working platform comprising a turntable (2), an arm support (3) and an adjustable chassis weight mechanism, characterized in that the adjustable chassis weight mechanism is in particular an adjustable chassis weight mechanism according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111615794.9A CN114212744B (en) | 2021-12-27 | 2021-12-27 | Aerial working platform and adjustable chassis counterweight mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111615794.9A CN114212744B (en) | 2021-12-27 | 2021-12-27 | Aerial working platform and adjustable chassis counterweight mechanism thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN114212744A CN114212744A (en) | 2022-03-22 |
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| WO2017088251A1 (en) * | 2015-11-27 | 2017-06-01 | 中国矿业大学 | Eccentric loading adjusting mechanism and method for parallel suspension platform |
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